Low-nitrogen condensation volumetric water heating device

Abstract

The utility model discloses a low-nitrogen condensation volumetric water heating device which comprises a shell and a water tank arranged in the shell, a heat exchange structure is arranged in the shell, the bottom of the water tank is connected with the input end of the heat exchange structure through a circulating water pump, and the output end of the heat exchange structure is communicated with the upper portion of the water tank through a backflow pipe. The heat exchange structure comprises a shell, a combustor, a corrugated heat exchange pipe, a fan and a smoke exhaust pipe; the combustor is fixed to the lower portion of an inner cavity of the shell, the corrugated heat exchange pipe is arranged on the upper portion of the inner cavity of the shell and located over the combustor, and the circulating water pump is connected to the input end of the corrugated heat exchange pipe. The heat exchanger is reasonable in structural arrangement, the fan is matched with the corrugated heat exchange tubes, high efficiency of combustion can be improved, condensation heat exchange operation is achieved, latent heat of vaporization of water vapor in smoke can be fully absorbed, heat exchange efficiency can be improved, and the heat exchanger is convenient and reliable to use, high in applicability and good in practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot water devices, and in particular relates to a low-nitrogen condensing volumetric hot water device. Background Art

[0002] Hot water devices such as water heaters and water boilers are a common household appliance structure, and the condensing heat exchanger is the main component of the hot water device. It mainly adopts a structure with multiple heat exchange tubes in parallel. Due to the large number of heat exchange tubes, the heat exchange efficiency is low during the heat exchange process. It is also easy to cause differences in water resistance due to different positions, resulting in uneven heat exchange, affecting the service life of the heat exchanger, and therefore limiting its applicability and practicality. Summary of the Invention

[0003] The purpose of the utility model is to provide a low-nitrogen condensing volumetric water heating device which has a reasonable structure and is conducive to improving heat exchange efficiency.

[0004] The technical solution for achieving the purpose of the utility model is a low-nitrogen condensing positive displacement water heater, comprising a housing, a water tank disposed within the housing, a heat exchange structure disposed within the housing, the bottom of the water tank being connected to the input end of the heat exchange structure via a circulating water pump, and the output end of the heat exchange structure being connected to the upper portion of the water tank via a return pipe;

[0005] The heat exchange structure includes a shell, a burner, a corrugated heat exchange tube, a fan and a smoke exhaust pipe;

[0006] The burner is fixed to the lower part of the inner cavity of the shell, the corrugated heat exchange tube is arranged at the upper part of the inner cavity of the shell, and the corrugated heat exchange tube is directly above the burner, and the circulating water pump is connected to the input end of the corrugated heat exchange tube;

[0007] The fan is fixed to the upper part of the housing;

[0008] The smoke exhaust pipe is communicated with the inner cavity of the shell.

[0009] It is further preferred that: a secondary heat exchanger is fixed on the top of the shell;

[0010] The output end of the corrugated heat exchange tube is connected to the input end of the secondary heat exchanger, the return pipe is connected to the output end of the secondary heat exchanger, and the exhaust pipe passes through the secondary heat exchanger.

[0011] It is further preferred that a gas conduit is provided in the shell, the gas conduit is connected to the burner through a gas proportional valve, and an ignition needle connected to the burner is fixed to the bottom of the shell.

[0012] It is further preferred that: a control circuit board and a display screen connected to the control circuit board are provided in the housing;

[0013] The control circuit board is connected to the fan, the circulating water pump, the ignition needle and the gas proportional valve.

[0014] Further preferably, the housing is provided with a temperature probe and a detection needle connected to the control circuit board;

[0015] The temperature probe is located on the corrugated heat exchange tube, and the detection needle is located in the burner.

[0016] It is further preferred that: the control circuit board is provided with a processor, a temperature protection circuit connected to the processor, a water shortage protection circuit, an overpressure automatic relief protection circuit and a remote control module.

[0017] More preferably, the inner liner of the water tank is a stainless steel inner liner.

[0018] Further preferably, the fan is a variable speed fan.

[0019] The utility model has positive effects: the structure of the utility model is reasonably arranged, and its heat exchange structure includes a shell, a burner, a corrugated heat exchange tube, a fan and a smoke exhaust pipe; the corrugated heat exchange tube is located directly above the burner, and the use of the fan in conjunction with the corrugated heat exchange tube can improve the efficiency of combustion, achieve condensation heat exchange operation, and is also beneficial to fully absorb the latent heat of vaporization of water vapor in the flue gas, which is beneficial to improving the heat exchange efficiency. It is convenient and reliable to use, has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0021] Figure 1 It is a structural diagram of the present utility model.

[0022] Figure numerals: water tank 1, heat exchange structure 2, shell 21, burner 22, corrugated heat exchange tube 23, fan 24, exhaust pipe 25, circulating water pump 3, return pipe 4, secondary heat exchanger 5, gas conduit 6, gas proportional valve 7, ignition needle 8, temperature probe 9, detection needle 10. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0024] See Figure 1 A low-nitrogen condensing positive displacement water heater comprises a housing and a water tank 1 disposed within the housing. The water tank's inner liner is made of stainless steel. A heat exchange structure 2 is disposed within the housing. The bottom of the water tank is connected to the input end of the heat exchange structure via a circulating water pump 3, and the output end of the heat exchange structure is connected to the upper portion of the water tank via a return pipe 4. In this embodiment, the housing is a conventional structure of the prior art and is not shown in detail for simplicity.

[0025] In actual application, the heat exchange structure includes a shell 21, a burner 22, a corrugated heat exchange tube 23, a fan 24, and a smoke exhaust pipe 25. The burner is a conventional structure of the prior art. During assembly, the burner is fixed to the lower part of the inner cavity of the shell, the corrugated heat exchange tube is arranged in the upper part of the inner cavity of the shell, and the corrugated heat exchange tube is directly above the burner. The circulating water pump is connected to the input end of the corrugated heat exchange tube. At the same time, the fan is fixed to the upper part of the shell. The smoke exhaust pipe is connected to the inner cavity of the shell. In this embodiment, the fan is a variable speed fan. In combination with the corrugated heat exchange tube, condensation heat exchange operation can be achieved, and the latent heat of vaporization of water vapor in the flue gas generated by the burner can be combined to improve the heat exchange efficiency.

[0026] In actual use, a secondary heat exchanger 5 is fixed to the top of the housing. During assembly, the output end of the corrugated heat exchange tube is connected to the input end of the secondary heat exchanger, the return pipe is connected to the output end of the secondary heat exchanger, and the exhaust pipe passes through the secondary heat exchanger. In this embodiment, the exhaust pipe and the secondary heat exchanger can improve heat exchange efficiency and increase heat utilization.

[0027] In actual use, the housing is provided with a gas conduit 6, which is connected to the burner via a gas proportional valve 7. An ignition pin 8, connected to the burner, is fixed to the bottom of the housing. The ignition pin is a conventional structure in the prior art and is primarily used for ignition, while the gas conduit is primarily used to guide the flow of gas.

[0028] In actual use, the housing houses a control circuit board and a display screen connected to the control circuit board. The control circuit board is connected to the fan, circulating water pump, ignition needle, and gas proportional valve. The housing is equipped with a temperature probe 9 and a detection needle 10 connected to the control circuit board. During assembly, the temperature probe is located on the corrugated heat exchange tube, and the detection needle is located within the burner, enabling detection of corresponding temperature conditions and combustion status.

[0029] In this embodiment, the control circuit board is equipped with a processor, a temperature protection circuit connected to the processor, a water shortage protection circuit, an overpressure automatic relief protection circuit, and a remote control module. This provides overtemperature protection, water shortage protection, and overpressure protection, while also enabling remote control via a mobile phone app, improving safety and convenience, and enhancing practicality.

[0030] The utility model has positive effects: the structure of the utility model is reasonably arranged, and its heat exchange structure includes a shell, a burner, a corrugated heat exchange tube, a fan and a smoke exhaust pipe; the corrugated heat exchange tube is located directly above the burner, and the use of the fan in conjunction with the corrugated heat exchange tube can improve the efficiency of combustion, achieve condensation heat exchange operation, and is also beneficial to fully absorb the latent heat of vaporization of water vapor in the flue gas, which is beneficial to improving the heat exchange efficiency. It is convenient and reliable to use, has strong applicability and good practicality.

[0031] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components described in the specification can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description is given here.

[0032] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. However, obvious variations or modifications arising from the essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A low-nitrogen condensing positive displacement water heater, comprising a housing and a water tank disposed within the housing, characterized in that: A heat exchange structure is provided in the shell, the bottom of the water tank is connected to the input end of the heat exchange structure through a circulating water pump, and the output end of the heat exchange structure is connected to the upper part of the water tank through a return pipe; The heat exchange structure includes a shell, a burner, a corrugated heat exchange tube, a fan and a smoke exhaust pipe; The burner is fixed to the lower part of the inner cavity of the shell, the corrugated heat exchange tube is arranged at the upper part of the inner cavity of the shell, and the corrugated heat exchange tube is directly above the burner, and the circulating water pump is connected to the input end of the corrugated heat exchange tube; The fan is fixed to the upper part of the housing; The smoke exhaust pipe is communicated with the inner cavity of the shell.

2. A low-nitrogen condensing positive displacement water heater according to claim 1, characterized in that: A secondary heat exchanger is fixed on the top of the shell; The output end of the corrugated heat exchange tube is connected to the input end of the secondary heat exchanger, the return pipe is connected to the output end of the secondary heat exchanger, and the smoke exhaust pipe passes through the secondary heat exchanger.

3. A low-nitrogen condensing positive displacement water heater according to claim 2, characterized in that: A gas conduit is provided in the shell, the gas conduit is connected to the burner through a gas proportional valve, and an ignition needle connected to the burner is fixed to the bottom of the shell.

4. A low-nitrogen condensing positive displacement water heater according to claim 3, characterized in that: A control circuit board and a display screen connected to the control circuit board are arranged in the housing; The control circuit board is connected to the fan, the circulating water pump, the ignition needle and the gas proportional valve.

5. A low-nitrogen condensing positive displacement water heater according to claim 4, characterized in that: The housing is provided with a temperature probe and a detection needle connected to the control circuit board; The temperature probe is located on the corrugated heat exchange tube, and the detection needle is located in the burner.

6. The low-nitrogen condensing positive displacement water heater according to claim 4, characterized in that: The control circuit board is provided with a processor, a temperature protection circuit connected to the processor, a water shortage protection circuit, an overpressure automatic relief protection circuit and a remote control module.

7. The low-nitrogen condensing positive displacement water heater according to claim 1, characterized in that: The inner liner of the water tank is a stainless steel inner liner.

8. The low-nitrogen condensing positive displacement water heater according to claim 1, characterized in that: The fan is a variable speed fan.

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