Abrégé

A control method for a gas water-heating apparatus. The gas water-heating apparatus comprises: a first heat exchanger (1); a combustor (2), which is used for heating the first heat exchanger (1); and a second heat exchanger (3), which comprises a first flow channel (4) and a second flow channel (5) that can exchange heat, wherein the first flow channel (4) is in communication with the first heat exchanger (1), such that a heated liquid in the first heat exchanger (1) flows into the first flow channel (4); and the second flow channel (5) is in communication with a domestic water inlet and a domestic water outlet. The control method comprises: acquiring a domestic water usage signal of a user; once the domestic water usage signal is acquired, controlling a first heat exchanger (1) to communicate with a first flow channel (4); acquiring heat energy which is stored in the first heat exchanger (1) and can be released; acquiring a heat load required for heating domestic water to a preset temperature; and controlling the operation of a combustor (2) according to the required heat load and the heat energy, which is stored in the first heat exchanger (1) and can be released, and according to a first preset rule. By means of the control method for a gas water-heating apparatus, the accuracy of controlling the temperature of domestic water is improved, and the problems of the water output temperature of the domestic water from the gas water-heating apparatus being unstable, the thermostatic performance of the gas water-heating apparatus being poor, etc. are solved.

Classes IPC  ?

• F24H 9/20 - Disposition ou montage des dispositifs de commande ou de sécurité

Abrégé

The present invention relates to the field of water heating devices. Disclosed are a gas water heating device and a control method thereof. The gas water heating device comprises a burning device, and the burning device comprises a first group of burners and a second group of burners which can independently start or stop working. The control method of the gas water heating device comprises: when a first preset condition is met, controlling the first group of burners to start burning, and controlling the second group of burners to be in a closed state; and when the first preset condition is met subsequently, controlling the second group of burners to start burning, and controlling the first group of burners to be in the closed state, or controlling the second group of burners to start burning after the first group of burners is started for a first preset number of times, and controlling the first group of burners to be in the closed state. The present application solves the problem that a certain local area of a heat exchanger is prone to failure due to long-term heating, and the service life of heat exchangers is prolonged.

Classes IPC  ?

• F24H 15/365 - Commande de moyens de production de chaleur dans les appareils de chauffage de brûleurs de plusieurs brûleurs, p. ex. d’un réseau de brûleurs
• F24H 15/421 - Commande des appareils de chauffage de fluides caractérisée par le type des unités de commande utilisant un traitement électronique, p. ex. par ordinateur utilisant des données préenregistrées
• F24H 9/1836 - Disposition ou montage des éléments chauffants de combustion, p. ex. des grilles ou des brûleurs utilisant un combustible fluide

Abrégé

Disclosed in the present invention are a condensing heat exchanger and a hot water/heating device thereof. The condensing heat exchanger comprises: a shell, which comprises a first end part and a second end part arranged opposite to each other, and a side wall arranged between the first end part and the second end part, the second end part being provided with a mounting part used for mounting a combustor; a smoke outlet, provided on the shell; a heat exchange assembly, provided in the shell; and a first heat insulation part, disposed close to the first end part, a first gap being formed between the first heat insulation part and the first end part, and at least part of flue gas subjected to heat exchange with the heat exchange assembly flowing through the first gap and being discharged from the smoke outlet. According to the condensing heat exchanger and the hot water/heating device thereof provided by the present application, on the premise of ensuring heat insulation and cooling effects, the reliability of the condensing heat exchanger and the hot water/heating device thereof is improved by optimizing the structure in the condensing heat exchanger, and moreover, the cost can be reduced.

Classes IPC  ?

• F24H 8/00 - Appareils de chauffage de fluides caractérisés par des moyens pour extraire par condensation la chaleur latente des fumées
• F24H 9/13 - Raccordement des éléments chauffants, de transfert ou de production de chaleur aux tuyauteries de circulation pour appareils de chauffage de l’eau
• F24H 9/16 - Dispositions pour purger l’eau
• F24H 9/1836 - Disposition ou montage des éléments chauffants de combustion, p. ex. des grilles ou des brûleurs utilisant un combustible fluide