A hot water supply heating device includes heat exchanger that heats tap water by heat medium from water supply passage provided with distribution valve and outputs hot water to hot water outflow passage; bypass passage branched from water supply passage at distribution valve and connected to hot water outflow passage; control part that supplies hot water at hot water supply set temperature by valve position adjustment of distribution valve; and notification part. The control part includes standard valve position setting part for distribution valve corresponding to combination of hot water supply set temperature and water supply temperature, and when hot water is supplied in normal mode, in case where an adjustment amount from standard valve position set by standard valve position setting part to adjusted valve position exceeds an adjustment normal range, control part transitions according to adjustment amount to any one of first mode; second mode; or third mode.
An exterior case C comprises a case body section Ca and an upper lid 3. A stepped pressing part 21 provided in a region near an upper section of a side plate 2A of the case body section Ca has first and second curved-line parts 22a, 22b. A mutual region formed between the first and second curved-line parts 22a, 22b is a sloped wall part 21B positioned increasingly farther toward the case interior side in an upward direction. A region above the first curved-line part 22a is an upper non-sloping wall part 21A, and a protruding piece section 31 of the upper lid 3 faces the upper non-sloping wall part 21A and abuts the sloped wall part 21B. A curved part 4 of the side plate 2A is provided with an upward-opening-shaped notch part 41 extending in a vertical height direction across both an upper non-sloping wall part 21A' and a sloped wall part 21B'. Consequently, the present invention makes it unlikely for a gap to occur in an attachment location of the upper lid onto the case body section, simplifies and optimizes the provision of a curved part to a stepped pressing part, and favorably simplifies manufacturing and reduces manufacturing costs.
A method of setting up a hot water supply system. The hot water supply system includes a first hot water supply device having a first set of setting values to be set, and a terminal device configured to communicate with the first hot water supply device, wherein the terminal device is configured to set the first set of setting values of the first hot water supply device. The method of setting up the hot water supply system includes a step of storing the first set of setting values of the first hot water supply device in the terminal device as a stored set of setting values, and a step of reusing the stored set of setting values for another hot water supply device, wherein the terminal device is configured to delete the stored set of setting values in a case when a predetermined delete condition is met.
Provided is a hot water storage and supply system capable of promoting high energy efficiency hot water storage. A hot water storage and supply system (1) includes a hot water storage tank (21), a heat source machine (10) that stores heated hot water in the hot water storage tank, a hot water discharge passage (27) for discharging hot water from the hot water storage tank, a hot water discharge heat quantity detection means for the hot water discharge passage, a stored hot water heat quantity detection means for detecting a stored hot water heat quantity in the hot water storage tank, and a control means (29) for predicting a required heat quantity for each predetermined time period on the basis of hot water discharge results and storing the required heat quantities included in a predetermined period, wherein: the control means sets, as a storable heat quantity for each time period, the smaller of the stored hot water heat quantity planned at the end point of each time period and the maximum stored hot water heat quantity in the hot water storage tank; if the storable heat quantities are each equal to or greater than the corresponding required heat quantity, the control means sets the heat source machine output and the stored hot water temperature so as to maximize a coefficient of performance; and if any of the storable heat quantities is less than the corresponding required heat quantity, the control means sets the heat source machine output and the stored hot water temperature in accordance with a determination of whether the output of the heat source machine is insufficient or the maximum stored hot water heat quantity has been reached.
A combustion device C comprises: an exterior case 19; a combustion device body part Ca that is provided with a combustion chamber 29 in which a burner part 2 for burning fuel gas is provided, and an exhaust flow path 28; a fan 1 that is capable of supplying air inside the exterior case 19 to the combustion chamber 29 and the exhaust flow path 28; and a control means 5 that learns combustion operation results of the combustion device C and is capable of predicting a future combustion operation start timing of the combustion device C. When a predicted timing of combustion operation start of the combustion device C by the control means 5 arrives within a predetermined time from the present time, triggered by this, the fan 1 is driven with the burner part 2 kept in a non-driven combustion state, and ventilation inside the exterior case 19 is performed. As a result, when a fuel gas leak occurs, it is possible to appropriately prevent the occurrence of explosive ignition by a simple means.
A combustion device includes a fan; a premixing device capable of generating an air-fuel mixture by driving the fan; and an ignition device capable of ignition operation for the air-fuel mixture in a combustion chamber. The premixing device includes a flapper capable of opening and closing a part of a gas flow path and has a larger opening degree when the drive speed of the fan is high speed than low speed. The ignition operation for the air-fuel mixture by the ignition device is a standard ignition operation in principle, executed in a first drive speed range of the fan in which the flapper is in an open state, and exceptionally a non-standard ignition operation, executed in a second drive speed range of the fan in which the flapper is in a closed state in the case where the air-fuel mixture is not ignited by the standard ignition operation.
A valve device A of a hot water apparatus WH is capable of sequentially executing flow rate control in a temperature adjustment range mode and flow rate control in a flow rate adjustment range mode in a process where a rotation angle of a motor drive shaft 8 for a valve operation changes between a first angle α1 and a second angle α2. The flow rate control in the temperature adjustment range mode gradually increases the flow rate Qa of the heated hot water while gradually decreasing the flow rate Qb of the bypass hot water, and the flow rate control in the flow rate adjustment range mode changes a total flow rate of hot water flowing through the valve device A so that the flow rate Qa of the heated hot water gradually decreases while the flow rate Qb of the bypass hot water is maintained at or below a predetermined minimum flow rate. When occurrence or risk of output of abnormally high-temperature hot water is detected, the rotation angle of the motor drive shaft 8 is set to the first angle α1 in a case where the valve device A is in the temperature adjustment range mode, and set to the second angle α2 in a case where the valve device A is in the flow rate adjustment range mode.
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
F24H 15/219 - Temperature of the water after heating
A valve device A of a hot water apparatus WH is capable of sequentially executing flow rate control in a temperature adjustment range mode and a flow rate adjustment range mode, as control modes, in a process where a rotation angle of a motor drive shaft 8 for a valve operation changes between a predetermined first angle α1 and a second angle α2. The temperature adjustment range mode is capable of changing a mixing flow rate ratio of heated hot water from a heat exchanger 11 and bypass hot water to adjust the hot water outlet temperature to the exterior. The flow rate adjustment range mode is capable of adjusting a total flow rate of hot water flowing through the valve device so that the flow rate of the heated hot water is changed while maintaining the flow rate of the bypass hot water at or below a predetermined minimum flow rate. In response to a first condition being satisfied in which the outlet side temperature Tout of the heat exchanger 11 is higher than a predetermined reference temperature Ta, change from the temperature adjustment range mode and from a boundary between the temperature adjustment range mode and the flow rate adjustment range mode to the flow rate adjustment range mode is prohibited.
F24H 15/174 - Supplying heated water with desired temperature or desired range of temperature
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
F24H 15/184 - Preventing harm to users from exposure to heated water, e.g. scalding
F24H 15/219 - Temperature of the water after heating
G05D 23/20 - Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
Gas water heaters for household purposes; gas water heaters for industrial purposes; gas water heaters; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for household purposes; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for industrial purposes; heat pumps; electric water heaters for household purposes; electric water heaters for industrial purposes; water heaters; water heaters for household purposes; water heaters for industrial purposes; boilers, other than parts of non-electric prime movers or engines; hot water storage tanks for heating, steam producing, cooling, drying, ventilating water supply and hot water supply devices; hot water storage tanks for heating and hot water supply devices for household purposes
(1) Gas water heaters for household purposes; gas water heaters for industrial purposes; gas water heaters; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for household purposes; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for industrial purposes; heat pumps; electric water heaters for household purposes; electric water heaters for industrial purposes; water heaters; water heaters for household purposes; water heaters for industrial purposes; boilers, other than parts of non-electric prime movers or engines; hot water storage tanks for heating, steam producing, cooling, drying, ventilating water supply and hot water supply devices; hot water storage tanks for heating and hot water supply devices for household purposes.
(1) Gas water heaters for household purposes; gas water heaters for industrial purposes; gas water heaters; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for household purposes; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for industrial purposes; heat pumps; electric water heaters for household purposes; electric water heaters for industrial purposes; water heaters; water heaters for household purposes; water heaters for industrial purposes; boilers, other than parts of non-electric prime movers or engines; hot water storage tanks for heating, steam producing, cooling, drying, ventilating water supply and hot water supply devices; hot water storage tanks for heating and hot water supply devices for household purpose.
Gas water heaters for household purposes; gas water heaters for industrial purposes; gas water heaters; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for household purposes; heating, steam producing, cooling, drying, ventilating, water supply and hot water supply devices operated by heat-pump system for industrial purposes; heat pumps; electric water heaters for household purposes; electric water heaters for industrial purposes; water heaters; water heaters for household purposes; water heaters for industrial purposes; boilers, other than parts of non-electric prime movers or engines; hot water storage tanks for heating, steam producing, cooling, drying, ventilating water supply and hot water supply devices; hot water storage tanks for heating and hot water supply devices for household purpose
A distribution valve is provided, which includes a valve main body having first and second outlets and an inlet, a cylindrical valve body rotatably fitted into the valve main body, and a driver configured to rotate the valve body. The valve body has a peripheral wall portion and a bottom surface portion. The peripheral wall portion is formed with first and second opening portions configured to change opening areas of the first and second outlets. The bottom surface portion is formed with a third opening portion configured to change an opening area of the inlet. The distribution valve distributes fluid from the inlet to the first and second outlets. A seal member having a lip portion for adhering to the bottom surface portion is fitted into the inlet. The lip portion has a thickened portion facing the third opening portion immediately before an opening area of the inlet becomes zero.
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
F16K 27/06 - Construction of housingsUse of materials therefor of taps or cocks
In a premixing device A, as a portion opposite to a flow path adjustment member 2, a first wall surface S1 of a fuel gas flow path 8a, 8b in which a portion is open is provided at a base part 44 of a premixing flow path forming member 4. The flow path adjustment member 2 has, on a second wall surface part S2 on a rear surface side of the flow path adjustment member 2, a claw part 23 able to hold the seal member 7. The pipe joint part 9 is able to be attached to the base part 44 in a state in which the flow path adjustment part 3 is sandwiched, so that the seal member 7 is sandwiched and pressurized by the first and second wall surface parts S1, S2.
A premixing device A includes: a premixing flow path 3 including first and second flow paths 3a, 3b; first and second fuel gas outlets 80a, 80b; and a flapper 5 swingably located on the first flow path 3a. The premixing device A is configured that, when the flapper 5 is changed from a closed state to an open state, auxiliary flow paths 38a, 38b on a proximal end side and a distal end side are formed between respective regions on the proximal and distal end sides of the flapper 5 and a predetermined seat part 47, and, through the auxiliary flow paths 38a, 38b, an air flow from a predetermined specific flow path region 3a toward a region downstream of the flapper 5 in the air flow direction and a fuel gas outflow from the first fuel gas outlet 80a together with the air flow are generated.
A premixing device A includes: a premixing flow path 3 including first and second flow paths 3a, 3b a extending in an upper-lower height direction in parallel arrangement in a horizontal direction; and first and second fuel gas outlets 80a, 80b; and a flapper 5. The flapper 5 is provided to be able to swing in the upper-lower height direction on an upper side of a predetermined plate part 41a and a specific flow path region 3a′, swings by using self-eight as a downward force and an air flow from below the specific flow path region 3a upward as an upward force, and is able to simultaneously open and close both the first fuel gas outlet 80a and the specific flow path region 3a in accordance with a flow rate of the premixing flow path 3.
A hot water supply system includes a plurality of hot water supply devices. The plurality of hot water supply devices include a first hot water supply device having a first hot water supply wireless communication module and a second hot water supply device having a second hot water supply wireless communication module. The plurality of hot water supply devices communicate with each other by a daisy chain connection, wherein the daisy chain connection is a wireless connection. One hot water supply device among the plurality of hot water supply devices is configured to be paired with another hot water supply device among the plurality of hot water supply devices that is currently not paired with any of the plurality of hot water supply devices and has a highest received signal strength indicator value among the plurality of hot water supply devices.
F24H 15/464 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using local wireless communication
A hot water supply system includes a plurality of hot water supply devices. Each of the plurality of hot water supply devices includes a hot water supply wireless communication module having a transceiver and a receiver adapted to wirelessly communicate with a mobile terminal. One hot water supply device among the plurality of hot water supply devices is paired with the mobile terminal to establish a first wireless communication path. After the one hot water supply device is paired with the mobile terminal, the one hot water supply device receives a one-time password from the mobile terminal, wherein the one hot water supply device is configured to send the one-time password to other hot water supply devices among the plurality of hot water supply devices, and the other hot water supply devices are paired with the mobile terminal using the one-time password.
F24H 15/464 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using local wireless communication
F24D 19/10 - Arrangement or mounting of control or safety devices
F24H 15/296 - Information from neighbouring devices
F24H 15/443 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using a central controller connected to several sub-controllers
F24H 15/45 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
Processing executed by a water heater includes: performing a first ignition operation in a first test operation mode; in the case where ignition is detected, determining a combination of gas and an adjustment part to be abnormal; performing a second ignition operation in a second test operation mode; in the case where ignition is detected, determining a combination of gas and an adjustment part to be normal; and, in the case where no ignition is detected, determining a combination of gas and an adjustment part to be abnormal.
F23C 1/00 - Combustion apparatus specially adapted for combustion of two or more kinds of fuel simultaneously or alternately, at least one kind of fuel being either a fluid fuel or a solid fuel suspended in air
A hot water supply system includes a plurality of hot water supply devices. The plurality of hot water supply devices include a first hot water supply device having a first hot water supply wireless communication module and a first power supply part configured to turn on and off power to the first hot water supply wireless communication module, and a second hot water supply device having a second hot water supply wireless communication module and a second power supply part configured to turn on and off power to the second hot water supply wireless communication module. Each of the plurality of hot water supply devices is configured to turn on power to their respective wireless communication module when there is a need to perform wireless communication, and turn off power to their respective wireless communication module when there is no need to perform wireless communication.
F24H 15/464 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using local wireless communication
F24H 15/156 - Reducing the quantity of energy consumedIncreasing efficiency
F24H 15/436 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using pre-stored data for selecting sleeping modes
F24H 15/443 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based using a central controller connected to several sub-controllers
F24H 15/486 - Control of fluid heaters characterised by the type of controllers using timers
29.
SYSTEM FOR MOBILE TERMINAL TO COMMUNICATE WITH PLURALITY OF HOT WATER SUPPLY DEVICES
A hot water supply system includes a plurality of hot water supply devices. The plurality of hot water supply devices include a first hot water supply device and a second hot water supply device. The first hot water supply device has a first hot water supply wireless communication module including a transceiver and a receiver adapted to wirelessly communicate with a mobile terminal. The plurality of hot water supply devices communicate with each other via a water-supply-to-water-supply-communication-path, wherein the first hot water supply device is configured to be paired with the mobile terminal to establish a first wireless communication path between the first hot water supply device and the mobile terminal for transmitting and receiving data, and hot water supply devices other than the first hot water supply device are configured to transmit and receive data to and from the mobile terminal via the first hot water supply device.
A controller, based on a comparison between an operation parameter of a hot water supply device and a determination value, executes position reset of a stepping motor which is a drive source of a valve. During execution of the position reset, when a control value of a rotational position is initialized according to a detection signal generated when the rotational position reaches a reference position, if the magnitude of an error between the control value before initialization and the reference position is larger than a reference range, the determination value is changed so that an execution frequency of the position reset increases.
A premixing device which includes a premixing flow path including a first flow path and a second flow path, and a first fuel gas outlet and a second fuel gas outlet includes: a first blade section which is provided in the first flow path, and with which the first fuel gas outlet is provided; a protruding wall section which is provided on the first blade section; and a flapper which oscillates at a position downstream in the air flow direction than the first blade portion of the first flow path. When the flapper is in an open state below a specified opening degree, the flow of air from the first flow path to the first fuel gas outlet is capable of being suppressed by the protruding wall section.
A control part of a hot water supply system is configured as follows. When a hot water flow rate in a hot water circulation path is equal to or greater than a predetermined reference flow rate when the pump is driven and an immediate hot water supply operation is being performed, and duration of this state is equal to or longer than a predetermined first time, the control part determines that a hot water supply terminal is in an opened state and stops driving of the pump. When the pump is driven during setting of a test operation mode of the hot water supply system, the hot water flow rate in the hot water circulation path at that time is detected, and the reference flow rate can be determined based on a detected value of the hot water flow rate.
A distribution valve includes a cylindrical valve body rotatably fitted into a valve main body having a first outlet, a second outlet, and an inlet, and a driver for rotating the valve body, and the distribution valve distributes fluid flowing from the inlet into the valve body to the first and second outlets. The valve body has a peripheral wall portion and a bottom surface portion that function as seal surface portions to close the first and second outlets and the inlet. The peripheral wall portion is formed with first and second opening portions configured to continuously change opening areas of the first and second outlets. The bottom surface portion is formed with a third opening portion configured to change an opening area of the inlet within a predetermined range. A valve seat member is arranged in the inlet, causing a seal portion to adhere to the bottom surface portion.
F16K 11/085 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
F16K 5/18 - Special arrangements for separating the sealing faces or for pressing them together for plugs with cylindrical surfaces
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
34.
PREMIXING DEVICE AND COMBUSTION DEVICE INCLUDING THE SAME
A premixing device includes: a blade, arranged midway of a gas flow path through which air flows, and provided with a fuel gas outlet in a region near one end downstream in an air flow direction; a pair of divided flow paths, configured by dividing a portion of the gas flow path by the blade; and a baffle, located upstream of the fuel gas outlet in the air flow direction on an inner peripheral surface of each divided flow path, and being in the shape of a protruding piece or step part protruding inward of each divided flow path. The baffle is provided in at least a portion of an inner region of each divided flow path, and makes it possible to increase a flow velocity of air flowing through an outer region to be higher than a flow velocity of air passing through the inner region.
B01F 25/10 - Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
B01F 25/421 - Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
B01F 25/432 - Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flowsCross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
B01F 101/00 - Mixing characterised by the nature of the mixed materials or by the application field
F23D 14/04 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
A combustion apparatus comprising includes: a combustion part for combusting fuel gas; a mixed gas supply channel for supplying a mixed gas of fuel gas and air to the combustion part; and a flame sensor located in or facing the mixed gas supply channel and capable of optically detecting a flame of a backfire from the combustion part to the mixed gas supply channel in the event of the backfire. The combustion apparatus further includes a shielding part that prevents travel of the light of the flame during normal combustion and the backfired flame of the backfire from the combustion part to the flame sensor.
F23N 5/08 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
F23N 5/24 - Preventing development of abnormal or undesired conditions, i.e. safety arrangements
F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
A hybrid valve is configured so that a first section and a second section exist with respect to an opening degree control value. In the first section, the flow rate ratio of the high-temperature water flow rate and the low-temperature water flow rate changes; and in the second section, the flow rate ratio is fixed while the total flow rate changes. When the total flow rate is equal to or less than the limit flow rate, temperature control in which the hybrid valve operates in the first section is executed. When the total flow rate is greater than the limit flow rate, flow rate control in which the hybrid valve operates in the second section is executed. During temperature control, the heating amount of combustion burners is adjusted to control a can body temperature to a can body setting temperature set to decrease as the total flow rate increases.
F24H 9/20 - Arrangement or mounting of control or safety devices
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
F24H 15/174 - Supplying heated water with desired temperature or desired range of temperature
A premixing device PR comprises a premixing device body part A that is connected to a discharge side of a fan 5 and has a gas passage 19 and a fuel gas outflow port 23, a pressure adjustment valve V that controls the supply pressure of a fuel gas, a pressure-receiving part formation part 32 that has a pressure-receiving part 32a that is a recessed opening that receives the air pressure inside the gas passage 19, a plurality of support parts 31 that support the pressure-receiving part formation part 32, a signal pressure transmission path SP that includes a communication passage 35 provided inside the plurality of support parts 31 and transmits the air pressure received at the pressure-receiving part 32a to the pressure adjustment valve V as a signal pressure, and a baffle part 33 that is provided downstream of the pressure-receiving part 32a in the airflow direction and can turn an incoming airflow into a swirling or turbulent flow. As a result, the air pressure of the gas passage 19 can be used as an accurate signal pressure Ps for the pressure adjustment valve V for the fuel gas, and the fuel gas can be sufficiently stirred and mixed with air.
A process executed by a mobile communication terminal and water heaters and, which are capable of performing near field wireless communication, includes: a step in which the mobile communication terminal scans a BLE device (S215); a step in which a list of water heaters are displayed (S225); a step in which the mobile communication terminal generates connection data (S240); a step in which the mobile communication terminal transmits the connection data to the water heaters (S245); a step in which the water heaters receive the connection data (S250); a step in which the mobile communication terminal displays an operation screen for the water heater to which the connection has been completed (S285) when the connection data transmitted to the water heater and the input connection data match (YES in step S270); and a step in which the mobile communication terminal communicates with the water heater (S290).
Provided is a hot water supply system in which each of multiple hot water suppliers communicatively connected in series by a communication line includes a first communication unit for communicating with another adjacent hot water supplier on the downstream side via the communication line and a second communication unit for communicating with another adjacent hot water supplier on the upstream side. The controller of each hot water supplier executed a control processing to recognize, based on presence or absence of communication by the first communication unit and the second communication unit, its role as a leader positioned at the most upstream side of a series connection constituting a communication connection and operating to execute a supervisory control for cooperative control; a terminal follower positioned at the most downstream of the series connection constituting the communication connection; or a middle follower located between the leader and the end follower.
The hot water suppliers are configured to communicate with a hot water supplier on a downstream side via the communication line connected to a first communication connector, and communicate with a hot water supplier on an upstream side via the communication line connected to a second communication connector. In each of the first communication connector and the second communication connector, a shorting pin is connected together with the communication line by installation of a cable connector, thereby detecting connection of the communication line. When detecting that the communication line is connected to the first communication connector and the communication line is not connected to the second communication connector, a controller operates to perform a function of supervisory control for cooperative control of multiple hot water suppliers communicatively connected.
A processing executed by a hot-water supply system includes: receiving an input of a temperature (setting temperature) of hot water to be supplied by the hot-water supply system from a user; determining, by a processor of each hot-water supplier, whether the setting temperature exceeds an upper limit value of a temperature of hot water capable of being supplied by the hot-water supplier; in a case where the setting temperature exceeds the upper limit value, notifying a system controller that the setting temperature exceeds the upper limit value; transmitting a signal prohibiting a hot-water supply operation to all hot-water suppliers; notifying a remote controller that hot water cannot be supplied; and outputting a status that hot water cannot be supplied at the setting temperature.
The invention provides a water heater WH including first and second connection target parts J1, J2 that are, as a means for connecting a burner unit BU and a heat exchanger HE, frame-like parts provided at opening edge parts of a first case 1 of the burner unit and a second case 2 of the heat exchanger, respectively, and sandwich a sealing member 5 to face and be connected with each other. An entire shape of the sealing member is frame-like corresponding to the first and second connection target parts, and a notched concave part 50 or a non-notched hole part 50A is formed at a portion thereof. A heat transfer convex part 15 is provided at at least one of the first and second connection targets, and protrudes to enter the concave part or the hole part to come into surface contact with the other.
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Dish washing machines for household purpose. Remote controller for gas water heaters; remote controller
for household oil water heaters; remote controller for
household electric water heaters; remote controller for
household electric feedwater heaters; remote controller for
household water heaters; remote controller for gas feedwater
heaters for industrial purposes; remote controller for oil
water heaters for industrial purposes; remote controller for
electric water heaters for industrial purposes; remote
controller for gas feedwater heaters; remote controller for
oil water heaters; remote controller for latent heat
recovery gas water heaters; remote controller for latent
heat recovery oil water heaters; remote controller for solar
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controllers for boilers; remote controller for electric fan;
remote controllers for household electrothermic appliances;
remote controllers for electric foot warmers; remote
controllers for room coolers; remote controllers for
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drying installations for household purposes; remote
controller for bathroom heating and drying installations for
household purposes; remote controller for range hood; remote
controllers for light bulbs and lighting units; remote
controller for clothes dryers; remote controller for air
purifiers; remote controller for household electric
appliances; remote controller for bath boiler. Water-pipes for sanitary installations; washroom units,
namely, showers, toilets, water-closets and sinks; toilet
bowls and seats sold as a unit; water closets; prefabricated
bath installations sold as a unit; sauna room units for
household purposes; commercial sauna room units; desiccating
apparatus; drying apparatus; steamers, not for use in beauty
salons or barbers' shops; evaporators; distillation
apparatus; heat exchangers, other than parts of machines;
gas-fired water heaters; remote controller for gas water
heaters; oil feedwater heaters for household purposes; oil
water heaters for household purposes; remote controller for
household oil water heaters; electric water heaters for
household purposes; remote controller for household electric
water heaters; electric feedwater heaters for household
purposes; remote controller for household electric feedwater
heaters; reservoir gas water heaters for household purposes;
gas-fired water heaters for household purposes; water
heaters for household purposes; gas water heaters for
household purposes; remote controller for household water
heaters; gas feedwater heaters for industrial purposes; gas
water heaters for industrial purposes; remote controller for
gas feedwater heaters for industrial purposes; oil feedwater
heaters for industrial purposes; oil water heaters for
industrial purposes; remote controller for oil water heaters
for industrial purposes; electric water heaters for
industrial purposes; remote controller for electric water
heaters for industrial purposes; water heaters for
industrial purposes; instantaneous water heaters; storage
water heaters; storage-type gas water heaters; induction
water heaters; water heaters; gas water heaters; remote
controller for gas feedwater heaters; oil water heaters;
remote controller for oil water heaters; latent heat
recovery gas water heaters; remote controller for latent
heat recovery gas water heaters; latent heat recovery oil
water heaters; remote controller for latent heat recovery
oil water heaters; solar water heaters; remote controller
for solar water heaters; hot water mixing water heater for
solar water heaters; remote controller for water heaters;
hot water mixer for hot water heater; boilers, other than
parts of non-electric prime movers or engines; remote
controllers for boilers; fans [air-conditioning];
ventilating fans; space cooling apparatus; electric space
cooling apparatus [for household purposes]; air-conditioning
apparatus; air conditioners; gas hot-air heaters for
household purposes; oil hot-air heaters for household
purposes; hot-water bathroom heater with drying function for
household purposes; hot-water floor heating systems for
household purposes; heat pumps; heating, steam producing,
cooling, drying, ventilating, water supply and hot water
supply devices operated by heat-pump system for household
purposes; heating, steam producing, cooling, drying,
ventilating, water supply and hot water supply devices
operated by heat-pump system for industrial purposes;
heating, steam producing, cooling, drying, ventilating,
water supply and hot water supply devices operated by
cogeneration system for household purposes; heating, steam
producing, cooling, drying, ventilating, water supply and
hot water supply devices operated by cogeneration system for
industrial purposes; heating, steam producing, cooling,
drying, ventilating water supply and hot water supply
devices for household purposes powered by fuel cell-based;
hot water storage tanks for heating, steam producing,
cooling, drying, ventilating water supply and hot water
supply devices; floor heating systems for household
purposes; heating and cooling devices for household
purposes; heating, steam producing, cooling, drying and
ventilating devices for household purposes operated by water
heating system; hot water storage tanks for heating and hot
water supply devices for household purposes; floor heating
apparatus; underfloor heating apparatus and installations;
gas fan heaters for household purposes; oil fan heaters for
household purposes; gas fan heaters for industrial purposes;
oil fan heaters for industrial purposes; gas fan heaters;
oil fan heaters; electric fan heaters; fan heaters; stoves
[space heaters] for household purposes, non-electric;
Japanese hand warming apparatus [electric hibachi]; Japanese
charcoal heaters for household purposes [hibachi]; remote
controller for electric fan; remote controllers for
household electrothermic appliances; remote controllers for
electric foot warmers; remote controllers for room coolers;
remote controllers for heating/cooling devices; bathroom
drying installations for household purposes; remote
controller for bathroom drying installations for household
purposes; bathroom heating and drying installations for
household purposes; remote controller for bathroom heating
and drying installations for household purposes; household
tap-water filters; water purifying apparatus for household
purposes; water purifiers for household use; household
tap-water filters, non-electric; filters for water purifiers
for household purposes; water softener for household
purposes; water purifying apparatus; filters for water
purifiers; filter cartridges for water purification and
water softening for household purposes; filters for
filtration water purifiers; freezers; laundry dryers,
electric, for industrial purposes; cookers and cooking
machinery for restaurants and industrial purposes; dish
drying machines for commercial use; industrial dish drying
machines; tableware sterilizers for restaurants and
industrial purposes; electromagnetic induction cookers; air
heaters; barbecue grills; non-electric cooking heaters for
household purposes; immersion heaters; barbecues; kitchen
sinks incorporating integrated worktops; kitchen sinks;
kitchen sinks incorporating integrated worktops and doors;
doors specially adapted for kitchen sink units with
integrated worktop; kitchen sinks with integrated doors;
doors specially adapted for kitchen sink units; gas stoves;
gas stoves for household use; kettle stands for gas stove;
burners caps for gas stoves; grills for gas stoves; gas
cookers; gas cooking stoves; gas ranges; cooker hoods;
extractor hoods; extractor hoods for kitchens; electric
range hoods; range hoods (extractor hoods, for household
purposes); remote controller for range hood; tap water
faucets; level controlling valves for tanks; pipe line
cocks; garbage incinerators; dish drying machines for
household purpose; dish washing machines for household
purpose; dish disinfectant apparatus for household purpose;
remote controllers for light bulbs and lighting units;
electric lamps and other lighting apparatus; remote
controller for clothes dryers; remote controller for air
purifiers; household electrothermic appliances; remote
controller for household electric appliances; bathroom
heating and drying apparatus for home use; washers for water
taps; washers for water faucets; grills [cooking
appliances]; gas lamps; oil lamps; garbage incinerators for
household purposes; toilet stool units with a washing water
squirter; toilet bowls; seats for use with Japanese style
toilet bowls; bathtub jets for household purposes; bath
fittings; remote controller for bath boiler; bath boilers;
vanity top sinks; bathroom sinks; showers; disinfectant
dispensers for bathrooms; hot water circulation fittings for
bathtubs.
A water heater fixing assembly includes a pair of upper column members, a pair of lower column members, a pair of lower column members, a first pipe stay, a second pipe stay, and a first copper pipe. The pair of upper column members are laterally disposed with each other. The pair of lower column members are disposed below the pair of upper column members and laterally disposed with each other. A vertical projection of the first pair of the water heaters is not overlapped with a vertical projection of the second pair of the water heaters. A first pipe stay is protruded from the pair of upper column members and extended below the first pair of the water heaters. A second pipe stay is protruded from an installation side of the pair of lower column members and extended below the second pair of the water heaters.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Dish washing machines for household purpose. Remote controller for gas water heaters; remote controller
for household oil water heaters; remote controller for
household electric water heaters; remote controller for
household electric feedwater heaters; remote controller for
household water heaters; remote controller for gas feedwater
heaters for industrial purposes; remote controller for oil
water heaters for industrial purposes; remote controller for
electric water heaters for industrial purposes; remote
controller for gas feedwater heaters; remote controller for
oil water heaters; remote controller for latent heat
recovery gas water heaters; remote controller for latent
heat recovery oil water heaters; remote controller for solar
water heaters; remote controller for water heaters; remote
controllers for boilers; remote controller for electric fan;
remote controllers for household electrothermic appliances;
remote controllers for electric foot warmers for household
purposes; remote controllers for room coolers; remote
controllers for heating/cooling devices; remote controller
for bathroom drying installations for household purposes;
remote controller for bathroom heating and drying
installations for household purposes; remote controller for
range hood; remote controllers for light bulbs and lighting
units; remote controller for clothes dryers; remote
controller for air purifiers; remote controller for
household electric appliances; remote controller for bath
boiler. Water-pipes for sanitary installations; washroom units,
namely, showers, toilets, water-closets and sinks; toilet
bowls and seats sold as a unit; water closets; prefabricated
bath installations sold as a unit; sauna room units for
household purposes; commercial sauna room units; desiccating
apparatus; drying apparatus; steamers, not for use in beauty
salons or barbers' shops; evaporators; distillation
apparatus; heat exchangers, other than parts of machines;
gas-fired water heaters; oil feedwater heaters for household
purposes; oil water heaters for household purposes; electric
water heaters for household purposes; electric feedwater
heaters for household purposes; reservoir gas water heaters
for household purposes; gas-fired water heaters for
household purposes; water heaters for household purposes;
gas water heaters for household purposes; gas feedwater
heaters for industrial purposes; gas water heaters for
industrial purposes; oil feedwater heaters for industrial
purposes; oil water heaters for industrial purposes;
electric water heaters for industrial purposes; water
heaters for industrial purposes; instantaneous water
heaters; storage water heaters; storage-type gas water
heaters; induction water heaters; water heaters; gas water
heaters; oil water heaters; latent heat recovery gas water
heaters; latent heat recovery oil water heaters; solar water
heaters; hot water mixing water heater for solar water
heaters; hot water mixer for hot water heater; boilers,
other than parts of non-electric prime movers or engines;
fans [air-conditioning]; ventilating fans; space cooling
apparatus; electric space cooling apparatus [for household
purposes]; air-conditioning apparatus; air conditioners; gas
hot-air heaters for household purposes; oil hot-air heaters
for household purposes; hot-water bathroom heater with
drying function for household purposes; hot-water floor
heating systems for household purposes; heat pumps; heating,
steam producing, cooling, drying, ventilating, water supply
and hot water supply devices operated by heat-pump system
for household purposes; heating, steam producing, cooling,
drying, ventilating, water supply and hot water supply
devices operated by heat-pump system for industrial
purposes; heating, steam producing, cooling, drying,
ventilating, water supply and hot water supply devices
operated by cogeneration system for household purposes;
heating, steam producing, cooling, drying, ventilating,
water supply and hot water supply devices operated by
cogeneration system for industrial purposes; heating, steam
producing, cooling, drying, ventilating water supply and hot
water supply devices for household purposes powered by fuel
cell-based; hot water storage tanks for heating, steam
producing, cooling, drying, ventilating water supply and hot
water supply devices; floor heating systems for household
purposes; heating and cooling devices for household
purposes; heating, steam producing, cooling, drying and
ventilating devices for household purposes operated by water
heating system; hot water storage tanks for heating and hot
water supply devices for household purposes; floor heating
apparatus; underfloor heating apparatus and installations;
gas fan heaters for household purposes; oil fan heaters for
household purposes; gas fan heaters for industrial purposes;
oil fan heaters for industrial purposes; gas fan heaters;
oil fan heaters; electric fan heaters; fan heaters; stoves
[space heaters] for household purposes, non-electric;
Japanese hand warming apparatus [electric hibachi]; Japanese
charcoal heaters for household purposes [hibachi]; bathroom
drying installations for household purposes; bathroom
heating and drying installations for household purposes;
household tap-water filters; water purifying apparatus for
household purposes; water purifiers for household use;
household tap-water filters, non-electric; filters for water
purifiers for household purposes; water softener for
household purposes; water purifying apparatus; filters for
water purifiers; filter cartridges for water purification
and water softening for household purposes; filters for
filtration water purifiers; freezers; laundry dryers,
electric, for industrial purposes; cookers and cooking
machinery for restaurants and industrial purposes; dish
drying machines for commercial use; industrial dish drying
machines; electromagnetic induction cookers; air heaters;
barbecue grills; non-electric cooking heaters for household
purposes; immersion heaters; barbecues; kitchen sinks
incorporating integrated worktops; kitchen sinks; kitchen
sinks incorporating integrated worktops and doors; doors
specially adapted for kitchen sink units with integrated
worktop; kitchen sinks with integrated doors; doors
specially adapted for kitchen sink units; gas stoves; gas
stoves for household use; kettle stands for gas stove;
burners caps for gas stoves; grills for gas stoves; gas
cookers; gas cooking stoves; gas ranges; cooker hoods;
extractor hoods; extractor hoods for kitchens; electric
range hoods; range hoods (extractor hoods, for household
purposes); tap water faucets; level controlling valves for
tanks; pipe line cocks; garbage incinerators; dish drying
machines for household purpose; dish disinfectant apparatus
for household purpose; electric lamps and other lighting
apparatus; household electrothermic appliances; bathroom
heating and drying apparatus for home use; grills [cooking
appliances]; freestanding paper lanterns; standing paper
lanterns [andon]; Chinese lanterns; portable paper lanterns
(chochin); paper lanterns; gas lamps; lamp chimneys; oil
lamps; warming pans, non-electric; pocket warmers; Japanese
pocket warmers filled with fuel; hot water bottles;
non-electric hot water bottles; hot water bottles for
warming one's feet in bed; septic tanks for household
purposes; waste water treatment tanks for household
purposes; garbage incinerators for household purposes;
toilet stool units with a washing water squirter; toilet
bowls; seats for use with Japanese style toilet bowls;
bathtub jets for household purposes; bath fittings; bath
boilers; vanity top sinks; bathroom sinks; showers;
disinfectant dispensers for bathrooms; hot water circulation
fittings for bathtubs.
In a multiple hot water supply system (10) including: multiple hot water supply device (11 to 14); and a control device (15) increasing/decreasing an operating device number of a hot water supply operation performed by the hot water supply devices (11 to 14) according to a demanded hot water supply capacity, the control device (15) includes a function of calculating a continuous standby time of each hot water supply device (11 to 14), and, when there is a hot water supply device whose continuous standby time exceeds a reference standby time set in advance, exerts control so that the hot water supply device most preferentially supplies hot water during a next hot water supply operation.
A heat exchanger includes a header part that is arranged on an outer surface side of a sidewall part of a case into which a combustion gas is supplied, and has hole parts through which end parts of heat transfer tubes are inserted and forms a chamber communicating between insides of the heat transfer tubes. The heat exchanger further includes a burring part in a tubular shape that protrudes from a circumferential edge part of each hole part of the header part toward the sidewall part side and is externally fitted to the end part of each heat transfer tube, and an extension part that partially extends from a part of a tip circumferential edge part of the burring part toward the sidewall part side and has a tip part abutting against the sidewall part.
F24H 1/16 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
F24H 9/14 - Arrangements for connecting different sections, e.g. in water heaters
F28F 9/18 - Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
56.
HOT WATER SUPPLY APPARATUS AND CONTROL METHOD FOR HOT WATER SUPPLY APPARATUS
The hot water supply apparatus includes a heat pump unit operating using electrical energy, a hot water storage tank storing hot water heated by the heat pump unit, and an auxiliary heat source device burning fuel and heating hot water when a stored hot water heat amount is insufficient for a heat amount used for hot water supply. A control device calculates a predicted heat amount for each unit time period based on a past usage record of hot water supply; estimates an error distribution of an actual heat amount relative to the predicted heat amount; calculates an expected value of loss in a target index using the estimated error distribution; obtains an optimal stored hot water heat amount minimizing the expected value; and controls the heat pump unit so that the hot water storage tank stores the optimal stored hot water heat amount.
A valve device includes: a case having a valve chamber and first to third water communication ports communicating with the valve chamber; first and second valve bodies disposed in the valve chamber; and a shaft body connected with the first valve body. The first valve body is rotated about a central axis of the shaft part. The second valve body is rotated about the central axis together with the first valve body. When rotated about the central axis in a first angle region, the first valve body changes a first flow rate, i.e., a flow rate of water between the first and third water communication ports, and a second flow rate, i.e., a flow rate of water between the second and third water communication ports. When the first valve body is rotated about the central axis in a second angle region, the second valve body changes the second flow rate.
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F16K 11/076 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with pivoted closure members with sealing faces shaped as surfaces of solids of revolution
F24D 19/10 - Arrangement or mounting of control or safety devices
58.
COMBUSTION APPARATUS AND HOT WATER APPARATUS PROVIDED WITH SAME
This combustion apparatus C comprises: a non-electroconductive flame hole plate 4 having a flame hole distribution area 40A in which a plurality of flame holes 40 that are through-holes are provided in a distributed arrangement; a chamber 30 that is adjacent to the reverse-surface side of the flame hole plate 4, the chamber 30 guiding, to the flame hole plate 4, a gas mixture of air and a fuel gas that is hydrogen or a hydrogen-containing gas; a combustion area CA on the obverse-surface side of the flame hole plate 4; and a grounding electroconductive part 5 that is set to a ground potential, the grounding electroconductive part 5 overlapping and contacting the reverse surface of the flame hole distribution area 40A in the flame hole plate 4. This suitably prevents or suppresses invalid ignition of the fuel gas caused by electrostatic discharge in the flame hole plate 4.
A combustion device C comprises: a burner B for the combustion of fuel gas; a pressure regulating valve V that is provided to a fuel gas supply route 3 to the burner B and controls the fuel supply pressure to the burner B so as to obtain a pressure corresponding to a signal pressure Ps; a first fan 1A that is driven by the motor M and serves to supply air for combustion to the burner B; and a second fan 1B that is driven by the motor M, intended for use together with the drive source of the first fan 1A, and makes it possible to take in and discharge air at the time of driving. The air discharge pressure of the second fan 1B is used as the signal pressure Ps. It is thus possible to reduce the driving speeds of the first and second fans 1A, 1B and reduce noise while ensuring that the flow rate of the air supply for combustion and the fuel supply pressure to the burner B are adequate.
A flame rod of a hot water apparatus is attached to a side wall part of a case that surrounds a combustion region such that an insulator part is positioned on a downstream side of a burner port plate of a burner in a combustion gas flow direction. A core wire part includes an extending part extending from the insulator part toward the burner port plate, and a tip-side part positioned closer to a tip of the core wire part than the extending part. In the combustion gas flow direction, the tip-side part of the core wire part is opposed to at least one of burner ports, and the extending part is not opposed to any of the burner ports.
F23N 5/12 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
F24H 1/12 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
62.
Premixing device and combustion device including the same
A premixing device includes first and second fuel gas outlets through which fuel gas is capable of flowing out to first and second flow paths partitioned by a partition wall part of a premixing flow path, using a negative pressure generated by an air flow in the first and second flow paths. The premixing device further includes: a first blade part that is provided in the first flow path and includes the first fuel gas outlet provided facing a downstream side in an air flow direction; a flapper that has an opening degree changing according to an air flow rate and opens and closes both the first flow path and the first fuel gas outlet; and a pair of fin parts that protrude at the flapper to sandwich the first fuel gas outlet and the first blade part, and form a gap with respect to the first blade part.
09 - Scientific and electric apparatus and instruments
Goods & Services
Downloadable software for controlling and managing household appliances, namely, water heaters, appliances for heating, ventilation and air conditioning equipment; Downloadable computer application software for mobile phones, namely, software for controlling and managing household appliances, namely, water heaters, appliances for heating, ventilation and air conditioning equipment
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Software for controlling and managing household appliances, water heaters, appliances for heating, ventilation and air conditioning equipment; downloadable mobile application software for controlling and managing household appliances, water heaters, appliances for heating, ventilation and air conditioning equipment
66.
Hot water supply device and hot water supply system
A hot water supply device and a hot water supply system are provided. A controller actuates a circulation pump at a constant output and actuates a heating mechanism for heating by a combustion mechanism when an instantaneous hot water operation is started in response to a temperature drop of a fluid while hot water supply of a hot water supply tap is stopped, until a minimum drive time elapses. The minimum drive time is set based on a flow rate detection value of a flow rate detector under a condition that the circulation pump is actuated at a predetermined constant output and an instantaneous hot water circulation path is formed.
An air blower and a combustion device including the air blower are provided.
An air blower includes an impeller housed in a casing and rotating. The impeller includes multiple blades to form multiple inter-blade passages, and a central space portion. When the impeller rotates, air flowing into the central space portion through an air intake port of the casing passes through the inter-blade passages at an outward side. To reduce noise generated when the air passes through the inter-blade passages, each blade includes: multiple first concavo-convex portions, with a first surface side being concave and a second surface side on the other side being convex, from among a first and a second surface corresponding to a front and a rear surface of each blade; and multiple second concavo-convex portions, with the second surface side being concave and the first surface side being convex, contrary to the first concavo-convex portions.
A heat exchanger and a water heater are provided. The heat exchanger is provided with an auxiliary member including a trunk pipe joint portion joined to a trunk pipe and an extension portion extending from the trunk pipe joint portion toward a plurality of fins. The plurality of fins is provided apart from a sidewall portion so as not to directly contact the sidewall portion of a case, the extension portion of the auxiliary member includes an entry portion that enters between the plurality of fins and the sidewall portion, and a first abutment portion which is provided in the entry portion and abuts outer end portions of the plurality of fins, the first abutment portion is separated from the sidewall portion, and a space portion in which inflow of the heating gas is suppressed is formed between the first abutment portion and the sidewall portion.
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
A linked hot water supply system includes: multiple combustion hot water supply devices arranged in parallel between a water supply pipe and a hot water supply pipe; and a control means, changing a number of operated units of the hot water supply devices to adjust a heating capacity according to a hot water consumption. The hot water supply devices each includes a water passing volume detection means detecting a water passing volume of tap water introduced from the water supply pipe and an inlet water filter installed to an introduction part of the tap water from the water supply pipe. If the hot water supply devices are operating at a same time, the control means makes a determination on blockage of the inlet water filter installed in each of the hot water supply devices by comparing the water passing volumes of the hot water supply devices in operation.
In a pipe machining apparatus A, a region of a part including a first pressure contact part 61a which comes into pressure contact with a first portion 11a of a pipe P in a lower clamper part 6 of a clamping device C serves as a first movable clamper part 61 which is separate from a different region 63 of the lower clamper part 6, and the pipe machining apparatus A includes a first displacement member 8A that is able to displace the first movable clamper part 61 in a predetermined first direction D1 after machining of the pipe P ends. According to such a constitution, a pipe machining apparatus capable of appropriately resolving aggravation of workability of removing a pipe caused by a part of the pipe which comes into pressure contact with a lower clamper part of a clamping device can be provided.
A combustion apparatus C comprising: a combustion unit 4 for burning fuel gas; a mixed gas supply channel 3 for supplying a mixed gas of fuel gas and air to the combustion unit 4; and a flame sensor 5 located in or facing the mixed gas supply channel 3 and capable of optically detecting a backfired flame from the combustion unit 4 to the mixed gas supply channel 3 in the event of the backfire. The combustion apparatus C further comprises a shielding unit 6 that prevents advancement of the light of the flame during normal combustion and the backfired flame from the combustion unit 4 to the flame sensor 5. This can eliminate false detection of backfires, improve the accuracy of backfire detection, and appropriately suppress defects that may cause thermal damage to components due to backfired flames.
F23N 5/24 - Preventing development of abnormal or undesired conditions, i.e. safety arrangements
F23N 5/08 - Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
A tank includes: a bowl-shaped head having a peripheral wall whose base end side is open; and a tubular body member having an end in an axial length direction joined to the head. The peripheral wall of a region of the head close to a base end is an inclined peripheral wall whose inner diameter increases toward the base end. The end of the body member is inserted inside the inclined peripheral wall of the head and is joined to an inner peripheral surface of the inclined peripheral wall via a weld. A mark available for use in determining a position of the end of the body member is provided in a position on an outer peripheral surface of the body member on a central part side of the body member in the axial length direction with respect to the head and away from the end by a predetermined dimension.
B23K 33/00 - Specially-profiled edge portions of workpieces for making soldering or welding connectionsFilling the seams formed thereby
B23K 9/032 - Seam weldingBacking meansInserts for three-dimensional seams
B23K 37/053 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work aligning cylindrical workClamping devices therefor
The disclosure provides a water heater. The water heater includes a water heater main body portion including a heat exchanger and a combustion device; a fan and a motor for driving the fan; an exterior case; and an air supply adapter mounted to an upper wall portion of the exterior case. The combustion device and the motor are positioned in a region near an upper portion within the exterior case. The combustion device is at least partly positioned between the air supply adapter and the fan in a plan view. An air outlet of the air supply adapter opens substantially horizontally, avoiding a direction directly facing the motor. The air flowing out from the air outlet is changed in direction by a side wall portion of the exterior case and flows to reach a portion of the motor.
The disclosure provides a combustion device for burning LP gas filled in a gas cylinder as fuel in a combustion unit. The combustion device includes: a control unit for controlling a combustion operation based on a preset operation table such that a combustion output reaches a target output, and an output detection part for detecting the combustion output. In a case where the combustion output detected by the output detection part is risen by a reference value or more relative to the target output, the control unit notifies of a lowering in the remaining amount of LP gas in the gas cylinder.
The disclosure includes a hot water circulation device, and a hot water device monitoring system including a circulation passage; a circulation pump circulating hot water in the circulation passage; a closed expansion tank in which a water chamber communicating with the circulation passage and an air chamber filled with a predetermined pressure in initial state are partitioned by a diaphragm; and a control unit controlling hot water circulation. The hot water circulation device includes an air chamber pressure sensor detecting pressure in the air chamber; a closing valve cutting off water chamber from the circulation passage; and an open valve opening to atmosphere from between closing valve and water chamber. The control unit closes closing valve and opens opening valve during hot water circulation, detects pressure in the air chamber by the air chamber pressure sensor, and issues a warning notification when the pressure is not within predetermined pressure range.
A premixing device includes: a gas flow path for allowing air to flow; a gas outlet that allows fuel gas to flow out into the gas flow path by utilizing a negative pressure; and a flapper disposed in the gas flow path. The premixing device further includes an operation regulating part for the flapper which allows the opening degree of the flapper to change according to the air flow rate in a range below a predetermined upper limit position while preventing the flapper from rotating in an opening direction beyond the upper limit position. The operation regulating part is capable of selectively switching and setting one of a first upper limit position for normal combustion and a second upper limit position for fuel ignition. The opening degree of the flapper at the second upper limit position is smaller than that at the first upper limit position.
A hot water supplier monitoring system includes a monitoring server monitoring hot water suppliers via a communication network. The hot water supplier supplies hot water by adjusting temperature of hot water heated by a heat exchange unit using combustion heat from combustion operation. The monitoring server accumulates operation data of combustion operation transmitted from the suppliers, and predicts and notifies malfunction occurrence for each supplier based on trend of change in the data over time. The data includes number of flame quenchings of the combustion unit in combustion operation. The monitoring server divides the suppliers into groups according to installation areas, compares the number of quenchings of same period among the groups, compares with previous number of quenchings of same group, and, for a specific group determined having an abnormal number of quenchings, excludes the data determined having an abnormal number of quenchings and predicts malfunction occurrence for each supplier.
F24H 15/296 - Information from neighbouring devices
F24H 15/457 - Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible using telephone networks or Internet communication
A hot water supplier includes a combustion unit including multiple combustion stages; a combustion fan supplying combustion air; a fuel supply unit supplying fuel; a heat exchange unit; a water supply unit supplying hot water to heat exchange unit; a hot water tapping unit discharging hot water heated in heat exchange unit by using combustion heat obtained by burning fuel in combustion unit; and a control unit controlling heating operation. When reheating operation is allowed in which hot water from hot water tapping unit is returned to water supply unit and reheated by heat exchange unit, control unit stores heating time using only a combustion stage having minimum combustion capacity during reheating operation as time data. If this time data tends to increase over time, deterioration progress of a heat retaining material covering a hot water pipe to which hot water is supplied from hot water tapping unit is determined.
Tankless water heaters; racks specifically designed for holding tankless water heaters; tankless water heater systems comprising tankless water heaters and racks specifically designed for holding tankless water heaters
80.
OPERATION APPARATUS MONITORING SYSTEM AND OPERATION APPARATUS
An operation apparatus monitoring system includes an operation apparatus as a monitoring target. The operation apparatus includes a control part capable of executing control of acquiring multiple pieces of apparatus information associated with an operation status and periodically transmitting acquired data of the multiple pieces of apparatus information to a monitoring apparatus. In the control part, multiple groups are set, and data of the multiple pieces of apparatus information are grouped to belong to at least one of the multiple groups and are stored. Transmission of data of the multiple pieces of apparatus information to the monitoring apparatus is executed according to a sequence of data transmission to the monitoring apparatus determined for each group.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
Provided is a method for manufacturing an exterior case for a hot-water unit, used to house hot-water equipment for generating or storing hot water inside. The method includes a step combining an inkjet printing step for forming an inkjet printing layer by applying inkjet printing to the outer surface of a component of the exterior case and a curing step for curing the inkjet printing layer, in which the inkjet printing step and the curing step are repeated a plurality of times at the same location to form a thick printing portion in which the plurality of inkjet printing layers are laminated in an overlaid state.
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
A heat exchanger includes: a case which has a first side wall that stands upright in a vertical height direction and to which a heating medium is supplied inside; and heat transfer tubes for heating hot water housed in the case. Two end portions of the heat transfer tubes in a longitudinal direction are joined to the first side wall via brazing portions, and the heat transfer tubes are supported by the first side wall. The heat exchanger further includes heat transfer tube support portions provided on the first side wall for supporting portions of the heat transfer tubes near the first side wall to prevent the portions of the heat transfer tubes near the first side wall from descending below a first predetermined height.
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F28D 1/047 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
F28D 7/08 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
F28F 1/10 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
F28F 9/013 - Auxiliary supports for elements for tubes or tube-assemblies
The disclosure provides a collective exhaust system capable of safely detecting a closing failure of a check valve of the collective exhaust system. The collective exhaust system includes: multiple combustion devices including blowing parts and exhaust pipes; a collective exhaust duct to which the exhaust pipes of the multiple combustion devices are respectively connected; and check valves respectively provided between the exhaust pipes and the collective exhaust duct. The collective exhaust system is configured to detect a closing failure of the check valves by performing, in a state where one of the blowing parts of the multiple combustion devices is stopped and all the other blowing parts are driven with a predetermined blower capacity, a backflow determination from the collective exhaust duct to the combustion device with the stopped blowing part, and by performing the backflow determination for the multiple combustion devices.
A heat exchanger includes a plurality of heat transfer tubes housed in a predetermined case, a connecting tube body for connecting the plurality of heat transfer tubes, a predetermined tube expansion portion provided on each heat transfer tube, a first peripheral wall portion provided on the tube expansion portion, and a second peripheral wall portion that is positioned on an end portion of the connecting tube body and fitted to the tube expansion portion, wherein the first and second peripheral wall portions have different sectional shapes and are fitted together in a partial contact state including predetermined contact and non-contact portions. According to this configuration, the heat transfer tubes can be fixed to a side wall portion of the case and the connecting tube body can be connected to the heat transfer tubes easily and appropriately.
F28D 1/02 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid
F28D 1/047 - Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with the heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
F28F 9/18 - Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
F24H 1/41 - Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes in serpentine form
An exhaust adapter includes a cylindrical part for connecting an exhaust pipe of a combustion device to a collective exhaust duct; and a backflow prevention structure for preventing backflow of the exhaust from the collective exhaust duct side to the exhaust pipe side. The backflow prevention structure includes: a damper receiving part formed with an opening through which the exhaust from the exhaust pipe passes; an exhaust damper plate that opens the opening by pressure of the exhaust from the exhaust pipe and closes the opening by its own weight when there is no exhaust from the exhaust pipe; a support shaft that rotatably supports the exhaust damper plate; and a bearing part that supports the support shaft. A pair of shaft hole parts of the exhaust damper plate for inserting the support shaft is formed in a long hole shape.
Provided is a combustion apparatus (C) comprising: a burner (2) into which hydrogen or hydrogen-containing gas is supplied as fuel gas, and which is provided with a main flame hole (21a) and flame-holding holes (21b, 21b') arranged adjacent to each other; a fan (3); and fuel gas valves (Va, Vb), wherein the fuel gas valves (Va, Vb) can individually stop the supply of fuel gas to the main flame hole (21a) and the flame-holding holes (21b, 21b'), and if combustion is extinguished while the fan (3) is being driven and the fuel gas is burning in the burner (2), the fan (3) continues to be driven, the supply of fuel gas to the main flame hole (21a) is stopped, and the supply of fuel gas to the flame-holding holes (21b, 21b') is stopped after a predetermined time (Ta) elapses thereafter. This makes it possible to appropriately prevent a backfire from occurring when the combustion is extinguished.
F23N 1/02 - Regulating fuel supply conjointly with air supply
F23C 99/00 - Subject matter not provided for in other groups of this subclass
F23D 14/08 - Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with axial outlets at the burner head
A connected-type hot-water supply system includes hot-water supply apparatuses connected in parallel and a control means. The control means sets one main hot-water supply apparatus and sub-hot-water supply apparatuses, and performs leveling control of cumulative loads of the hot-water supply apparatuses by setting the main hot-water supply apparatus based on sequential rotation among the hot-water supply apparatuses. The control means includes a failure sign response mode in which it is determined whether there is a failure sign respectively for components of the hot-water supply apparatuses, and when a component of a part of hot-water supply apparatuses is a failure sign component determined to have a failure sign, a main use time of a hot-water supply apparatus having the failure sign component is increased, and the main use time is a main use time of serving as the main hot-water supply apparatus in the leveling control.
A hot water supply device includes a combustion part, a combustion fan, a heat exchange part, a water supply part, a hot water discharge part, and a control part. In the hot water supply device, in a pre-purge step of a heating operation, the presence or absence of a disturbance factor is determined based on rotational responsiveness and deviation of the combustion fan with respect to a scavenging rotation speed. When there is no disturbance factor, in an ignition step, detection of a failure sign is performed based on responsiveness and deviation of the combustion fan with respect to an ignition rotation speed.
A hot water supply device including an inlet pipe, an outlet pipe, a burner unit, a heat exchanger, an exhaust aperture, a first temperature sensor detecting a measured exhaust temperature of the exhaust gas, a second temperature sensor detecting a water temperature of water entering the inlet pipe, and a processor. The processor is configured to obtain an error between the measured exhaust temperature and an estimated exhaust temperature, and detects that scale clogging has occurred inside the heat exchange tubing based on an index which is generated using the error between the measured exhaust temperature and the estimated exhaust temperature. The estimated exhaust temperature is a first predetermined value that is determined using a numerical equation which has at least the water temperature of water entering the inlet pipe and a scale number of the hot water supply device as variables of the numerical equation.
An air supply duct for fan is used to guide air to an air intake port of a fan, and includes a duct main body portion in which an air passage extending in a predetermined x direction with one end side set as an air inlet port is formed inside, and an air supply port for supplying air travelling through the air passage to the air intake port of the fan is arranged. A peripheral region of the air supply port of the inside of the duct main body portion is surrounded by wall portions in the periphery except for a communication portion with the air passage, and is configured as a space portion for generating air column vibration and having a width in a y direction intersecting the x direction larger than a width of the air passage. A combustion device including the air supply duct is provided.
Provided is a blowing device capable of improving a noise reduction effect as compared with a conventional case, and a combustion device including the blowing device is provided. In a rear side shroud of an impeller configuring a blowing device, a first inclined surface portion that is inclined so as to be located frontward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region close to the outer peripheral edge, while a second inclined surface portion that is inclined so as to be located rearward toward the radial outer side is formed in a front surface portion of the rear side shroud in a region closer to the center than the first inclined surface portion.
A premixing flow path forming member of a premixing device includes a member whose attachment mode can be changed, and flow path resistance of a fuel gas flow path can be changed when the attachment mode of the member is changed.
A heating and hot-water supply device includes a combustion means, a heat exchanger, a circulation passage, a circulation means, a bypass passage, a distribution means, a hot-water supply heat exchanger, a water supply passage, a hot-water supply passage, and a control means. The heat exchanger heats a heating heat-medium to a target heat medium temperature. The distribution means distributes the heating heat-medium to the circulation passage and the bypass passage. The control means is capable of adjusting a distribution ratio of the distribution means to be adaptable to a heating operation, a hot-water supply operation, and a simultaneous heating and hot-water supply operation. At the time of transition from the heating operation to the simultaneous heating and hot-water supply operation, in a case where the heating terminal for performing heating is a warm air heater, the control means raises the target heat medium temperature.
A premixing device includes: a gas flow passage forming member in which an x direction is used as an axial length direction, and a Venturi-shaped gas flow passage into which air can flow in from the outside is formed inside; and a blade portion positioned in the gas flow passage, extending in a y direction, and equipped with a fuel gas outlet. The blade portion includes first and second blade portions spaced apart from each other in a z direction, and an air flow path near the center through which a part of the air flows is formed between these first and second blade portions. At least one of a pair of surfaces of the first and second blade portions facing each other is equipped with an inner bulging portion that bulges in the z direction so as to squeeze a part of the air flow path near the center.
A hot water supply device (10) is provided with: a first device (for example, a kitchen remote controller (13)) for performing control relating to hot water supply; a second device (for example, a water heater (11)) that is communicably connected to the first device and performs control relating to hot water supply; and a communication unit that is provided in the first device and can be connected to an external communication network. The first device divides data of control software of the second device acquired from an external device (for example, a server (50)) via the communication unit, into a plurality of parts, and transmits to the second device.
A heating and hot-water supply apparatus includes a combustion means, a heat exchanger, a circulation passage, a circulation means, a bypass passage, a distribution means, a hot-water supply heat exchanger, a water entry passage, a hot-water supply passage, and a control means. The circulation passage connects an external heating terminal and the heat exchanger. The water entry passage supplies water of an external hot-water supply pipe and an external water supply pipe to the hot-water supply heat exchanger. The control means controls the distribution means to be adaptable to each of a heating operation and a hot-water supply operation. The control means prioritizes the hot-water supply operation when there is a hot-water supply request for warm water use in addition to a heating request, and prioritizes the heating operation when there is a temperature-maintaining request for maintaining a temperature of the hot-water supply pipe in addition to the heating request.
A hot water device includes a heat exchanger and an apparatus to which the heat exchanger is to be connected. First and second cases for the heat exchanger and the apparatus to which the heat exchanger is to be connected include first and second flange portions laid over each other and welded together. The first and second flange portions are each demarcated into a corner flange portion corresponding to one of first and second corner portions, and into a non-corner flange portion other than the corner flange portion. The non-corner flange portions protrude more to the outside of the first and second cases than the corner flange portions.
F24H 1/00 - Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
F28F 9/00 - CasingsHeader boxesAuxiliary supports for elementsAuxiliary members within casings
F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
A water heating device includes: a heat exchanger having a case to which heating air is supplied, and heat transfer pipes accommodated inside the case; and a straightening vane arranged on the downstream side in a heating air flow direction of the heat transfer pipes, and having a plurality of vent holes. The heat transfer pipe includes a plurality of pipe body portions that extend along a direction intersecting the heating air flow direction and approach the straightening vane. The plurality of vent holes are arranged so as to overlap the plurality of pipe body portions in the heating air flow direction.
F24H 8/00 - Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
F24H 9/14 - Arrangements for connecting different sections, e.g. in water heaters
A communication system includes housing equipment, a relaying apparatus that communicates with the housing equipment, and a management device that communicates with the relaying apparatus via a communication network. The management device is configured to store user identification information sent from a communication terminal that communicates with the management device via the communication network, and association information associated with identification information of the relaying apparatus sent from the relaying apparatus, and permit first communication via the management device between the communication terminal and the relaying apparatus that have been associated with each other in the association information. After the first communication is permitted, if no communication is performed from the relaying apparatus or the communication terminal to the management device during a predetermined first period, the management device is configured to prohibit the first communication in and after the first period.
A hot-water supply system (1) remotely controls, via a server (50) and using a portable terminal device (30), a hot-water supply device (10) connectable to an external communication network (40). The hot-water supply system (1) is provided with a control unit which performs a notification process for notifying at least another, already-associated portable terminal device (30) that the portable terminal device (30) for performing remote control has been newly associated with the hot-water supply device (10). For example, a control unit of the server (50) performs the notification process as the control unit.
H04M 1/72415 - User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories for remote control of appliances
F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL Details
H04W 68/02 - Arrangements for increasing efficiency of notification or paging channel
H04L 67/75 - Indicating network or usage conditions on the user display
