The present invention relates to the technical field of indoor fresh air temperature adjustment, and provides a one-way flow micro-positive pressure temperature-adjusting fresh air indoor unit, and a system and an operation method therefor. The fresh air indoor unit comprises a casing, a PM2.5 filter, a humidifier, a carbon dioxide concentration sensor, a heat exchanger, and a controller. An outdoor air inlet communicated with an inlet of the PM2.5 filter is provided on the back of the casing, and an outlet of the PM2.5 filter is communicated with an inlet of the heat exchanger; an outlet of the heat exchanger is connected to a silent fan mounted on top of the casing, and an air outlet of the silent fan is arranged upward or downward or horizontally. In the present invention, the fresh air temperature is adjusted to a set temperature by the heat exchanger, the fresh air is then pressed into an indoor space by the low-noise fan, and a one-way flow micro-positive pressure is maintained indoors by adjusting the air volume of the low-noise fan; when the indoor carbon dioxide concentration is higher than a health standard, the air supply amount is adjusted, so that the indoor space has a fresh air supply rate for ensuring human health, and the purposes of health, comfort, environment friendliness and energy saving are achieved.
F24F 1/0063 - Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
F24F 1/0073 - Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
F24F 8/10 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
F24F 8/20 - Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
F24F 11/64 - Electronic processing using pre-stored data
F24F 11/52 - Indication arrangements, e.g. displays
F24F 11/58 - Remote control using Internet communication
F24F 13/24 - Means for preventing or suppressing noise
OIL-FREE SUPERCHARGER FOR GASEOUS CARBON DIOXIDE REFRIGERANT, AND CIRCULATION SYSTEM AND METHOD FOR CARBON DIOXIDE REFRIGERANT BEING USED FOR REFRIGERATION OR HEATING
An oil-free supercharger (100) for a gaseous carbon dioxide refrigerant, and a circulation system and method for a carbon dioxide refrigerant being used for refrigeration or heating. The oil-free supercharger (100) for a gaseous carbon dioxide refrigerant comprises a gas pressurization unit, wherein the gas pressurization unit comprises a crankshaft movement mechanism (110), a piston working mechanism (120), and a gas circulation mechanism (130). The circulation system for a carbon dioxide refrigerant being used for refrigeration or heating comprises the oil-free supercharger (100) for a gaseous carbon dioxide refrigerant, an outdoor air energy host (200), and a refrigerant and secondary-refrigerant heat exchanger (300). According to the system, the oil-free pressurization of a gaseous carbon dioxide refrigerant is achieved, and the low-temperature operation stability of the system is enhanced; and the compression ratio of the gaseous refrigerant is improved, and by means of realizing the enthalpy change of a refrigerant by using air energy, the energy efficiency ratio of the system is greatly improved.
F04B 37/12 - Pumps specially adapted for elastic fluids and having pertinent characteristics not provided for in, or of interest apart from, groups for special use to obtain high pressure
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
3.
CARBON DIOXIDE REFRIGERANT GAS PRESSURIZED CIRCULATION SYSTEM, CIRCULATION METHOD, AND COOLING AND HEATING AIR CONDITIONER
Disclosed in the present invention are a carbon dioxide refrigerant gas pressurized circulation system, a circulation method, and a cooling and heating air conditioner. The system comprises: a carbon dioxide refrigerant pressurizer, used to pressurize a gaseous carbon dioxide refrigerant; an outdoor air energy heat exchanger, used for a liquid refrigerant to absorb heat from the air and convert into a medium-pressure and low-temperature gaseous refrigerant, or for refrigerant to convert into a high-pressure and normal-temperature refrigerant by releasing heat to the air; a refrigerant circulation tank, used to add carbon dioxide refrigerant to the system or receive excess carbon dioxide refrigerant from the system; an indoor heat exchanger, used to implement cooling of the refrigerant or heating of the refrigerant; a floor heating system, used to implement heating of a floor; and a floor cooling system, used to implement cooling of the floor. The present invention achieves primary enthalpy change of a refrigerant using air absorbing heat from or releasing heat to refrigerant, and in addition, uses a high-pressure circulation method to improve a mass flow of the refrigerant circulation, to achieve a quite high energy efficiency ratio during cooling and heating; moreover, the natural working medium carbon dioxide is used as a refrigerant, which is safe and environmentally friendly.
22222222, and uses the ethylene glycol aqueous solution as a heat exchange medium between carbon dioxide and air, and thus, the present invention has the characteristics of being high in heat exchange efficiency, small in investment, high in carbon dioxide circulation efficiency, and environmentally friendly and the like.
A supercritical nitrogen quenching circulation cooling system for use in a vacuum furnace, comprising a heating chamber (2), a transfer chamber (3), and a quenching chamber (4) arranged in sequence, the quenching chamber (4) being a pressure-resistant sealed cavity, a fan (10), a heat exchanger (11), and a nozzle assembly (12) arranged around a workpiece (1) being arranged therein; the nozzle assembly (12) is in communication with a supercritical tank (8) arranged outside the quenching chamber (4) by means of a pipeline, and the quenching chamber (4) is in communication with the supercritical tank (8) by means of pipelines via a condensing chamber (5), a liquid nitrogen tank (6), and a pressure/temperature regulator (7).
222 storage tank is connected to the dye tank by means of the three-primary-color tank after sequentially passing through a filtering unit, a drying unit, a heating unit, and a pressurizing unit; the dye tank is connected to the dyeing kettle by means of an auxiliary tank, a flowmeter, and a plurality of parallel-connected pulse-type injectors in sequence; each of the pulse-type injectors is separately connected to a plurality of liquid inlet holes in each section of the dyeing kettle; each section of the dyeing kettle is provided with a dual-core ultrasonic generation device and a bidirectional circulating pump; and the bottom of the dyeing kettle is connected to the dye tank and the dye collection tank by means of pipelines. The optimal dye liquor conveying condition can be implemented by adopting pulse type conveying; the printing and dyeing uniformity and the printing and dyeing efficiency are improved; and a printing and dyeing process is environment-friendly, clean in production, good in economic benefits, and remarkable in environmental benefits.
D06B 3/09 - Passing of textile materials through liquids, gases, or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of yarns, threads, or filaments as packages, e.g. cheeses
D06B 23/20 - Arrangements of apparatus for treating processing-liquids, -gases or -vapours, e.g. purification, filtration or distillation
D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
7.
TRANSCRITICAL CARBON DIOXIDE REFRIGERATION METHOD AND DEVICE
Disclosed are a transcritical carbon dioxide refrigeration method and device. The method comprises: (1) performing primary compression and primary cooling on superheated carbon dioxide steam under pressure; (2) performing secondary compression and secondary cooling on subcritical carbon dioxide; (3) cooling the supercritical carbon dioxide again and then throttling same into low-temperature subcritical carbon dioxide; (4) feeding the throttled low-temperature subcritical carbon dioxide into an evaporation tank and evaporating same into high-temperature, low-pressure carbon dioxide gas; and (5) enabling the high-temperature, low-pressure carbon dioxide gas to absorb heat and be converted into superheated carbon dioxide steam, and feeding same into a first compressor for pressurization for cyclic utilization. According to the transcritical carbon dioxide refrigeration method and device, an expansion machine is used for recovering and outputting mechanical energy to drive the compressor to complete compression, double compressors are used for improving the compression performance of the supercritical carbon dioxide, and double gas coolers and an internal heat regenerator are used for cooling the carbon dioxide gas, thereby improving the circulation energy efficiency of carbon dioxide.
Disclosed in the present invention are a supercritical carbon dioxide printing and dyeing process and a printing and dyeing system thereof. The printing and dyeing process comprises the steps of: (1) converting liquid carbon dioxide into supercritical carbon dioxide; (2) mixing the supercritical carbon dioxide with a dye to form a dye solution; (3) introducing the dye solution into a dyeing kettle, and dyeing a yarn spindle from a spindle feeding end under the action of ultrasonic waves and bi-directional circulation; and (4) collecting the remaining dye solution after dyeing and performing decompression and separation treatments on same, the separated dye and supercritical carbon dioxide being respectively purified and dried for recycling. The printing and dyeing process and the printing and dyeing system thereof of the present invention are free of dyeing wastewater and other waste products, have the characteristics of green, environmental protection, clean production, good economic benefits and remarkable environmental benefits, and can achieve the purposes of recycling, line production, yield improvement and industrial cost reduction.
D06P 1/94 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using dyes dissolved in solvents which are in the supercritical state
D06P 1/44 - General processes of dyeing or printing textiles or general processes of dyeing leather, furs or solid macromolecular substances in any form, classified according to the dyes, pigments or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
A supercritical carbon dioxide extraction apparatus and a method thereof. The extraction apparatus comprises: an extraction kettle (15); a carbon dioxide storage tank (8) communicated with the bottom of the extraction kettle (15); a separation kettle (22) communicated with the top of the extraction kettle (15) and the carbon dioxide storage tank (8) by means of a pipeline; and a high-pressure gas tank (4) communicated with the carbon dioxide storage tank (8) by means of a pipeline, the liquid or supercritical carbon dioxide recovered in the carbon dioxide storage tank (8) being transported, under the effect of continuous pressurization of high-pressure air, to the extraction kettle (15) for recycling. According to the supercritical carbon dioxide extraction apparatus and the method thereof, by using high-pressure gas as power, the pressure of the supercritical carbon dioxide in each process section can be quickly adjusted, so as to quickly adjust the solubility of the supercritical carbon dioxide in the extraction kettle (15), thereby achieving high-efficiency extraction, and the advantages of fast process adjustment, high process stability, high control precision and high extraction efficiency are provided.
Disclosed is a supercritical carbon dioxide dry cleaning device, comprising a carbon dioxide storage tank (1), a high-pressure pump (2), a heat exchanger (3) and at least one cleaning chamber (7, 16), which are in sequential communication, wherein each of the cleaning chambers (7, 16) is equipped with pressure gages (10, 20) and thermocouples (11, 21), and heating and cooling pipes (8, 17) are arranged at an inner side wall. The carbon dioxide in the cleaning chambers (7, 16) can be controlled to be in a supercritical state or a non-supercritical state by means of the heating and cooling pipes (8, 17). In the supercritical carbon dioxide dry cleaning device, clothes are dry cleaned by regulating the inside of the cleaning chambers (7, 16) such that same are in a supercritical state; and after cleaning, the temperature and pressure are adjusted such that the supercritical carbon dioxide is isothermally depressurized, without the occurrence of direct gas-liquid interface vaporization, and supercritical drying is achieved, a combination of cleaning and drying is achieved, the cleaning effect is good, the structural design is novel, operation is convenient, and usage is safe and reliable, thereby facilitating popularization and application.
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