Abstract: The present disclosure discloses a proportional valve body, a proportional valve and a manufacturing method for a proportional valve body. The proportional valve body comprises a body extending in an axial direction, the body being provided with a first cavity and a second cavity penetrating therethrough in the axial direction and isolated from each other; the body being further provided with a first through hole penetrating through an outer wall of the body, the first hole being communicated with the first cavity and isolated from the second cavity. In the present disclosure, the first cavity and the second cavity of the proportional valve body penetrate through the body in the axial direction, thus the general structure of the proportional valve body can be obtained by means of extrusion molding. Extrusion molding has the advantages of easy operation, high productivity, and high utilization ratio of raw materials.

Abstract: The present disclosure discloses a proportional valve body, a proportional valve and a manufacturing method for a proportional valve body. The proportional valve body comprises a body extending in an axial direction, the body being provided with a first cavity and a second cavity penetrating therethrough in the axial direction and isolated from each other; the body being further provided with a first through hole penetrating through an outer wall of the body, the first hole being communicated with the first cavity and isolated from the second cavity. In the present disclosure, the first cavity and the second cavity of the proportional valve body penetrate through the body in the axial direction, thus the general structure of the proportional valve body can be obtained by means of extrusion molding. Extrusion molding has the advantages of easy operation, high productivity, and high utilization ratio of raw materials.

Abstract: The present disclosure discloses an ignition temperature control apparatus of a gas water heater, comprising: a heat exchanger made of stainless steel; a combustion device which supplies high-temperature flue gas to the heat exchanger; a water passage communicated with the heat exchanger; a first temperature detection device provided on the heat exchanger or on the water passage; a controller, wherein if a temperature detected by the first temperature detection device is lower than or equal to a first preset temperature or a rate of decline of a temperature detected by the first temperature detection device is higher than or equal to a first preset value the controller controls the combustion device to operate in such a state that a requirement for thermal bearing capacity of the heat exchanger made of stainless steel is satisfied.

Abstract: The embodiments of the present application disclose a combustion control system of a gas water heater or wall-hanging boiler, and a control method thereof. The system comprises: a flue gas channel consisted of a combustor, a heat exchanger and a stepless speed regulating fan and a smoke tube, which are connected sequentially; a control unit connected to a signal input end of the stepless speed regulating fan; a wind pressure sensor assembly that detects a pressure signal upstream of an impeller of the stepless speed regulating fan, a signal output end of the wind pressure sensor assembly being connected to the control unit; the control unit comprising a storage for storing a correspondence relationship between the pressure signal upstream of the stepless speed regulating fan and a thermal load of the combustor, and a controller that controls operation of the stepless speed regulating fan according to the correspondence relationship.

Abstract: A thermostatic condensing gas water heater, comprising a burner; a first heat exchanger (7), a second heat exchanger (4), a water inlet pipe (10), and a water outlet pipe (9) provided in succession along the flow direction of the burnt flue gas; a controller; and a water flow channel connecting the first heat exchanger (7) and the second heat exchanger (4) in parallel between the water inlet pipe (10) and the water outlet pipe (9), wherein flow control valves (3, 5) capable of adjusting the water flow distribution of the first heat exchanger (7) and the second heat exchanger (4) are provided on the water flow channel and controlled by the controller.

Abstract: The present disclosure discloses a proportional valve body, a proportional valve and a manufacturing method for a proportional valve body. The proportional valve body comprises a body extending in an axial direction, the body being provided with a first cavity and a second cavity penetrating therethrough in the axial direction and isolated from each other; the body being further provided with a first through hole penetrating through an outer wall of the body, the first hole being communicated with the first cavity and isolated from the second cavity. In the present disclosure, the first cavity and the second cavity of the proportional valve body penetrate through the body in the axial direction, thus the general structure of the proportional valve body can be obtained by means of extrusion molding. Extrusion molding has the advantages of easy operation, high productivity, and high utilization ratio of raw materials.

Abstract: The embodiments of the present application disclose a combustion control system of a gas water heater or wall-hanging boiler, and a control method thereof. The system comprises: a flue gas channel consisted of a combustor, a heat exchanger and a stepless speed regulating fan and a smoke tube, which are connected sequentially; a control unit connected to a signal input end of the stepless speed regulating fan; a wind pressure sensor assembly that detects a pressure signal upstream of an impeller of the stepless speed regulating fan, a signal output end of the wind pressure sensor assembly being connected to the control unit; the control unit comprising a storage for storing a correspondence relationship between the pressure signal upstream of the stepless speed regulating fan and a thermal load of the combustor, and a controller that controls operation of the stepless speed regulating fan according to the correspondence relationship.

Abstract: The present disclosure discloses an ignition temperature control apparatus of a gas water heater, comprising: a heat exchanger made of stainless steel; a combustion device which supplies high-temperature flue gas to the heat exchanger; a water passage communicated with the heat exchanger; a first temperature detection device provided on the heat exchanger or on the water passage; a controller, wherein if a temperature detected by the first temperature detection device is lower than or equal to a first preset temperature or a rate of decline of a temperature detected by the first temperature detection device is higher than or equal to a first preset value the controller controls the combustion device to operate in such a state that a requirement for thermal bearing capacity of the heat exchanger made of stainless steel is satisfied.

Abstract: A gas hot water heating device and a system with heating function are disclosed. The device includes a combustion device (1), an inlet (E) and an outlet (G) of a hot water pipeline (2), an inlet (I) and an outlet (H) of a heating loop (3), and a water tank (4). The device also includes a first heat exchanger (5), a second heat exchanger (6) and a third heat exchanger (7). A flue gas outlet (1-2) of the combustion device (1) is connected with flue gas passages of the first heat exchanger (5) and the second heat exchanger (6) in order and in series. A first water flow passage (5-1) and a second water flow passage (5-2) are arranged in the first heat exchanger (5), and the water tank (4) and the first water flow passage (5-1) of the first heat exchanger (5) are communicated between the inlet (E) and the outlet (G) of the hot water pipeline (2) in series. The second heat exchanger (6) and the third heat exchanger (7) can exchange heat with water in the water tank (4).

Abstract: A gas water heater includes a water tank, a combustion chamber, a burner, a heat exchanger tube at least partially within the water tank, and a fan. The burner receives fuel gas and primary air from a first air-supply channel to create a primary air-fuel mixture for combustion in the combustion chamber with secondary air. The primary air-fuel mixture has a gas concentration above the upper explosive limit of the fuel gas. Secondary air is supplied through a second air-supply channel to the combustion chamber. The secondary air creates a low excess air ratio (e.g., below 1.5) for combustion in the combustion chamber. A totally sealed channel is defined from the air inlet of the fan to the heat exchanger tube.

Abstract: A thermostatic condensing gas water heater, comprising a burner; a first heat exchanger (7), a second heat exchanger (4), a water inlet pipe (10), and a water outlet pipe (9) provided in succession along the flow direction of the burnt flue gas; a controller; and a water flow channel connecting the first heat exchanger (7) and the second heat exchanger (4) in parallel between the water inlet pipe (10) and the water outlet pipe (9), wherein flow control valves (3, 5) capable of adjusting the water flow distribution of the first heat exchanger (7) and the second heat exchanger (4) are provided on the water flow channel and controlled by the controller.

Abstract: The invention relates to a low-noise gas instantaneous water heater, belonging to the technical field of gas appliances. The low-noise gas instantaneous water heater comprises a combustion device, a heat exchanger and a blower; wherein the combustion device, the heat exchanger and the blower are arranged such that a combustion flue gas is discharged after passing sequentially through the heat exchanger and the blower; the blower comprises a stepless speed regulating motor with a motor control panel and an impeller driven by the motor, and at least one thermal insulation device is arranged between the motor control panel and the combustion flue gas generated by the combustion device.

Abstract: The invention relates to a low-noise gas instantaneous water heater, belonging to the technical field of gas appliances. The low-noise gas instantaneous water heater comprises a combustion device, a heat exchanger and a blower; wherein the combustion device, the heat exchanger and the blower are arranged such that a combustion flue gas is discharged after passing sequentially through the heat exchanger and the blower; the blower comprises a stepless speed regulating motor with a motor control panel and an impeller driven by the motor, and at least one thermal insulation device is arranged between the motor control panel and the combustion flue gas generated by the combustion device.

Abstract: A gas hot water heating device and a system with heating function are disclosed. The device includes a combustion device (1), an inlet (E) and an outlet (G) of a hot water pipeline (2), an inlet (I) and an outlet (H) of a heating loop (3), and a water tank (4). The device also includes a first heat exchanger (5), a second heat exchanger (6) and a third heat exchanger (7). A flue gas outlet (1-2) of the combustion device (1) is connected with flue gas passages of the first heat exchanger (5) and the second heat exchanger (6) in order and in series. A first water flow passage (5-1) and a second water flow passage (5-2) are arranged in the first heat exchanger (5), and the water tank (4) and the first water flow passage (5-1) of the first heat exchanger (5) are communicated between the inlet (E) and the outlet (G) of the hot water pipeline (2) in series. The second heat exchanger (6) and the third heat exchanger (7) can exchange heat with water in the water tank (4).

Abstract: The present invention provides a combined scale inhibitor and scale inhibiting device. The combined scale inhibitor contains organophosphorus filter materials, ceramic filter materials and polyphosphate filter materials. The organophosphorus filter materials are the granular filter materials of liquid organophosphorus scale and corrosion inhibitor while the said ceramic filter materials are the granular filter materials containing oxide ceramic powder. The said scale inhibiting device is comprised of a tank, a water inlet, a water outlet, an organophosphorus filter material layer, a ceramic filter material layer and a polyphosphate filter material layer in the said tank. The said organophosphorus filter material layer contains organophosphorus filter materials, which are the granular filter materials of liquid organophosphorus scale and corrosion inhibitor. The said ceramic filter material layer contains ceramic filter materials, which are the granular filter materials containing oxide ceramic powder.

Abstract: A condensing gas water heating device includes a frame, a main heat exchanger and a condensing heat exchanger. The frame, main heat exchanger, and a condensing heat exchanger all are made of stainless steel. The main heat exchanger and the condensing heat exchanger are integrally welded with the flue of the frame along the flue gas flow path to form a heat exchanger assembly. A condensed water collector is arranged between the main heat exchanger and the condensing heat exchanger. By welding the frame, main heat exchanger and condensing heat exchanger, which are made of stainless steel, into the integrally structured heat exchanger assembly, the present invention simplifies the structure and processing technology of the heat exchanger assembly, saves the installation space and materials of the heat exchanger assembly, and improves the corrosion resistance of the heat exchanger assembly.

Abstract: Systems and methods of heating an accurate quantity of a fluid. A determination is made that an event in which a relatively large quantity of hot water is used has occurred. One or more temperatures are sensed. An increase in a temperature set point is made if the sensed temperatures indicate a shortage of hot water for the event. A decrease in the temperature set point is made if the sensed temperatures indicate an excess of hot water was available for the event. No change is made to the temperature set point if the quantity of hot water available for the event was appropriate.

Abstract: A type of mixed energy heater with constant temperature control, which belongs to the field of water heater technology. This water heater includes a gas heating portion, an electric heating portion, and a control circuit. The control circuit includes a power output controller. The electric heating portion is composed of water passage and electric heating device installed in the water passage. The water passages of the gas heating portion and the electric heating portion are connected together in series or in parallel, and the terminal of the passage is equipped with a temperature sensor. The output of the temperature sensor is connected to the signal input of the control circuit.

Abstract: A temperature adjustable water mixing valve having a cold water inlet, a cold water outlet, a hot water inlet, a mixing water outlet, and a valve core configured to open or close water channels. The temperature adjustable water mixing valve further includes a pressure relief channel between the cold water inlet and a port connected with a water storage device. The channel is equipped with a check valve allowing water to flow from the water storage device to the cold water inlet. The temperature adjustable water mixing valve opens the check valve to discharge toward the front-end water source when the inner pressure in the water storage device is high.

Abstract: A gas water heater includes a water tank, a combustion chamber, a burner, a heat exchanger tube at least partially within the water tank, and a fan. The burner receives fuel gas and primary air to create a primary air-fuel mixture for combustion in the combustion chamber with secondary air. The primary air-fuel mixture has a gas concentration above the upper explosive limit of the fuel gas. Secondary air is supplied to the combustion chamber through a secondary air conduit that is separate from the burner. The heat exchanger tube receives the products of combustion, transfers heat from the products of combustion to water in the tank, and exhausts of the products of combustion. Only air flows through the fan; no fuel-air mixture flows through the fan. The water heater utilizes partial premix combustion with low excess air ratio and low contaminant emission.