Household hydrogen fuel water heating device

Abstract

The utility model provides a household hydrogen fuel water heating device which comprises a heat supply shell, and a burner, an electrolytic hydrogen production assembly, a first fan, a first heat exchanger, a second heat exchanger, a heat storage water tank and a heat exchange pipe network are arranged in the heat supply shell. The combustor is respectively connected with the electrolytic hydrogen production assembly and the first fan, and the first fan is communicated with the outside; the combustor is arranged below the first heat exchanger, and the first heat exchanger is communicated with the second heat exchanger; the heat exchange pipe network comprises a water inlet main pipe, a heat exchange main pipe and a water outlet main pipe which are sequentially connected, the water inlet main pipe and the water outlet main pipe independently communicate with the outside of the heat supply shell, and the heat exchange main pipe sequentially passes through the second heat exchanger and the first heat exchanger; the water outlet main pipe is further connected with a heat storage water tank through an energy storage branch pipe, and the heat storage water tank communicates with the outside of the heat supply shell through an auxiliary water supply pipe. The heat utilization rate is high, and the problem that heat supply is not stable is solved.

Description

Technical Field

[0001] This utility model belongs to the field of heating technology and relates to a household hydrogen fuel water heater. Background Technology

[0002] Gas water heaters, electric water heaters, and solar water heaters are the three most widely used types of water heaters in households. Gas water heaters use gas as fuel and have advantages such as fast heating, large water output, and stable temperature. However, the combustion process of gas easily produces harmful gases such as carbon monoxide or nitrogen oxides, requiring specialized catalytic equipment for exhaust gas treatment. This increases the complexity of the equipment structure and manufacturing costs, and the harmful gases produced pose significant safety hazards. Electric water heaters use electricity as energy and have advantages such as high safety, fast heating, clean energy, and the ability to supply water to multiple outlets. However, they are bulky, require preheating before use, cannot continuously use water exceeding their rated capacity, are prone to scaling, and the scale is difficult to clean. Solar water heaters use solar energy to heat water, offering advantages such as energy saving, environmental protection, low carbon emissions, sustainable use, and good economic benefits. However, they are more expensive, and solar energy levels are high during the day and low at night, and high in summer and low in winter, making their heating process extremely unstable.

[0003] Hydrogen energy is a high-energy-density and pollution-free green energy source. Its combustion generates a large amount of heat, making it suitable as a heating fuel. Currently, hydrogen energy utilization is mainly achieved through hydrogen fuel cells, primarily for electricity production. However, heating equipment using hydrogen fuel to replace traditional carbon-based fuels suffers from complex structures, low heating efficiency, poor insulation, and significant waste. Therefore, it is urgent to develop a highly efficient hydrogen fuel heating technology that can solve these problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a household hydrogen fuel water heater that uses green hydrogen instead of traditional gas for heating, which is pollution-free, improves heat utilization, and solves the problem of unstable heat output.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model provides a household hydrogen fuel water heater, which includes a heating shell. Inside the heating shell are a burner, an electrolysis hydrogen production assembly, a first fan, a first heat exchanger, a second heat exchanger, a hot water storage tank, and a heat exchange pipe network. The burner is connected to both the electrolysis hydrogen production assembly and the first fan. The first fan is connected to the outside environment and supplies air to the burner. The burner is positioned below the first heat exchanger to heat it. The first heat exchanger is connected to the second heat exchanger. The heat exchange pipe network includes an inlet main pipe, a heat exchange main pipe, and an outlet main pipe. The inlet and outlet main pipes are independently connected to the outside of the heating shell. The heat exchange main pipe passes sequentially through the second heat exchanger and the first heat exchanger, with its inlet and outlet connected to the inlet and outlet main pipes, respectively. The outlet main pipe is also connected to the hot water storage tank via a storage branch pipe. The hot water storage tank is connected to the outside of the heating shell via an auxiliary water supply pipe.

[0007] The hot water device of this invention uses hydrogen as fuel, which has low safety risks and avoids environmental pollution, thus achieving green heating. The cold water undergoes two heat exchanges to reach the required temperature, making full use of the combustion heat energy and greatly improving thermal efficiency. At the same time, the use of a hot water storage tank to store heat energy solves the problems of unstable heating and unbalanced heat output.

[0008] As a preferred embodiment of this utility model, a second fan is also provided inside the heating shell, and the air inlet and air outlet of the second fan are respectively connected to the first heat exchanger and the second heat exchanger.

[0009] This invention utilizes a second fan to output the waste heat from the first heat exchanger to the second heat exchanger to preheat the cold water in the heat exchange main pipe, effectively improving the heat utilization rate.

[0010] As a preferred embodiment of this utility model, a control box is provided on the inner wall of the heating shell. The control box is electrically connected to the burner, the electrolysis hydrogen production assembly, the first fan, the first heat exchanger, the second heat exchanger, and the second fan.

[0011] In this invention, the electrical equipment inside the heating shell is electrically connected to the control box through software and hardware and electromechanical control technology commonly used in the field, so as to realize automatic control and facilitate user operation and debugging.

[0012] As a preferred embodiment of this utility model, the electrolytic hydrogen production assembly includes an electrolysis tank, on which a feed pipe, an oxygen exhaust pipe, and a hydrogen pipe are provided. The feed pipe and the oxygen exhaust pipe are independently connected to the outside of the heating shell, and the hydrogen pipe is connected to the burner.

[0013] This invention utilizes an electrolysis hydrogen production component to produce hydrogen through water electrolysis, which is clean and pollution-free. The generated hydrogen is output to the burner as fuel for combustion, while the oxygen is directly discharged, resulting in high safety.

[0014] As a preferred embodiment of this utility model, a hydrogen concentration detection component and a proportional regulating valve are sequentially arranged on the hydrogen pipeline along the gas flow direction.

[0015] This invention ensures that hydrogen and air are in optimal combustion state in the burner by real-time monitoring of hydrogen concentration and addition ratio, preventing backfire and maintaining stable heat output.

[0016] As a preferred embodiment of this utility model, the main water outlet pipe is provided with a first temperature detection component.

[0017] As a preferred embodiment of this utility model, the hot water storage tank is equipped with a liquid level detection component and a second temperature detection component.

[0018] As a preferred embodiment of this utility model, the outer peripheral wall of the hot water storage tank is covered with a heat insulation layer.

[0019] As a preferred embodiment of this utility model, a collector is provided below the second heat exchanger, and the collector is provided with a return conduit, which is connected to the inlet end of the main water inlet pipe.

[0020] This invention utilizes a collector to recycle and reuse the condensate generated by the second heat exchanger, thereby improving operational safety.

[0021] As a preferred embodiment of this utility model, the reflux conduit is provided with a filtration and purification component.

[0022] This invention purifies the condensate and then reintroduces it into the main water inlet pipe, allowing it to enter the heat exchange main pipe together with the cold water to supply heat to the user, thus realizing resource utilization.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] This utility model provides a household hydrogen fuel water heater that is clean and pollution-free, with high thermal utilization rate and operational safety. It also uses a hot water storage tank to store thermal energy, ensuring heating stability and meeting the daily hot water needs of household users. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a household hydrogen fuel water heater provided as a specific embodiment of the present invention.

[0026] The components are as follows: 1-Heating shell; 2-Burner; 31-Electrolysis tank; 32-Feed pipe; 33-Oxygen exhaust pipe; 34-Hydrogen pipe; 304-Hydrogen concentration detection component; 305-Proportional regulating valve; 4-First fan; 5-First heat exchanger; 6-Second heat exchanger; 7-Hot water storage tank; 71-Liquid level detection component; 72-Second temperature detection component; 8-Second fan; 9-Collector; 91-Return pipe; 92-Filter purification component; 10-Control box; 11-Main water inlet pipe; 12-Main heat exchange pipe; 13-Main water outlet pipe; 131-First temperature detection component; 14-Energy storage branch pipe; 15-Auxiliary water supply pipe. Detailed Implementation

[0027] It should be understood that in the description of this utility model, the terms "center," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] It should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] In one specific embodiment, the present invention provides a household hydrogen fuel water heater, including a heating shell 1, such as... Figure 1As shown, the heating housing 1 is equipped with a burner 2, an electrolysis hydrogen production assembly, a first fan 4, a first heat exchanger 5, a second heat exchanger 6, a hot water storage tank 7, and a heat exchange pipe network. The burner 2 is connected to both the electrolysis hydrogen production assembly and the first fan 4. The first fan 4 is connected to the outside environment and supplies air to the burner 2. The electrolysis hydrogen production assembly produces hydrogen through water electrolysis and inputs the hydrogen into the burner 2, where it burns with the air to generate heat and water vapor. The burner 2 is positioned below the first heat exchanger 5, using the heat and water vapor generated by combustion to heat the first heat exchanger 5. The first heat exchanger 5 is connected to the second heat exchanger 6 to transfer waste heat to the second heat exchanger 6. The heat exchange pipeline network includes an inlet main pipe 11, a heat exchange main pipe 12, and an outlet main pipe 13. The inlet main pipe 11 and the outlet main pipe 13 are independently connected to the outside of the heating shell 1. The heat exchange main pipe 12 passes sequentially through the second heat exchanger 6 and the first heat exchanger 5, and the inlet and outlet of the heat exchange main pipe 12 are respectively connected to the inlet main pipe 11 and the outlet main pipe 13. Cold water enters the heat exchange main pipe 12 from the inlet main pipe 11 and undergoes two heat exchanges in the second heat exchanger 6 and the first heat exchanger 5 to achieve a temperature increase, forming hot water, which is then transported to the user through the outlet main pipe 13. The outlet main pipe 13 is also connected to the hot water storage tank 7 through an energy storage branch pipe 14 for storing hot water in the hot water storage tank 7. The hot water storage tank 7 is connected to the outside of the heating shell 1 through an auxiliary water supply pipe 15 to provide hot water to the user and ensure heating stability.

[0031] The heating housing 1 is made of a high-temperature resistant, explosion-proof, and corrosion-resistant material, and can be installed and fixed indoors or outdoors using commonly used support and reinforcement components. The inlet water pipe 11 can be connected to the indoor tap water pipe, and the outlet water pipe 13 can be connected to the indoor hot water outlet, such as a faucet or shower head, to heat the tap water for use.

[0032] Specifically, the main water outlet pipe 13 is equipped with a first temperature detection component 131 for real-time monitoring of the outlet water temperature. When the outlet water temperature is greater than or equal to the temperature threshold, the hot water in the heat exchange main pipe 12 is directly transported to the hot water consumption end for use; while when the outlet water temperature is lower than the temperature threshold, the hot water storage tank 7 is turned on to supply water to the hot water consumption end to ensure stable heat output.

[0033] The burner 2 also includes ignition equipment, flameout protection equipment, necessary pipelines and conventional valves for achieving complete process, etc. However, the above content is not the main improvement of this utility model. Those skilled in the art can add layouts based on process flow and equipment structure selection. This utility model does not make any special requirements or specific limitations in this regard.

[0034] The electrolytic hydrogen production assembly includes an electrolytic tank 31, which is equipped with a feed pipe 32, an oxygen exhaust pipe 33, and a hydrogen pipe 34. The feed pipe 32 is connected to the outside of the heating shell 1 and is used to supply the required liquid to the electrolytic tank 31, where oxygen and hydrogen are generated by electrolysis of water. The oxygen exhaust pipe 33 is connected to the outside of the heating shell 1 to discharge oxygen from the heating shell 1, preventing environmental pollution. The hydrogen pipe 34 is connected to the burner 2 to deliver hydrogen to the burner 2 for combustion and heating. The electrolytic tank 31 is also equipped with necessary connecting pipes, switch control valves, and general-purpose pump equipment. This utility model does not impose special limitations on these, and those skilled in the art should reasonably adjust, add, or delete them according to actual production needs. Furthermore, a hydrogen concentration detection component 304 and a proportional regulating valve 305 are sequentially arranged along the gas flow direction on the hydrogen pipe 34. The hydrogen concentration detection component 304 is used to monitor the hydrogen concentration generated by the electrolytic hydrogen production component in real time, and the proportional adjustment valve 305 is used to adjust the hydrogen addition flow rate to ensure the optimal mixing ratio of air and hydrogen and improve thermal efficiency.

[0035] The first fan 4 can be connected to the outside of the heating shell 1 through an air duct to draw outside air into the burner 2 to mix and burn with hydrogen.

[0036] This invention does not specifically limit the structure of the first heat exchanger 5 and the second heat exchanger 6; plate heat exchangers or finned heat exchangers commonly used in the art can be used. Specifically, a second fan 8 is also provided inside the heating housing 1. The air inlet and outlet of the second fan 8 are respectively connected to the first heat exchanger 5 and the second heat exchanger 6 to pass the remaining heat in the first heat exchanger 5 into the second heat exchanger 6. During application, the cold water flowing into the heat exchange main pipe 12 from the water inlet pipe 11 first exchanges heat with the remaining heat in the second heat exchanger 6 to initially raise its temperature, then flows into the first heat exchanger 5 to exchange heat with the heat provided by the burner 2 a second time to reach the required temperature, and is then transported to the hot water end through the water outlet pipe 13.

[0037] Those skilled in the art can select different arrangements of the heat exchange main pipe 12 based on the specific structures of the first heat exchanger 5 and the second heat exchanger 6. For example, the heat exchange main pipe 12 can be arranged in a rotary spiral manner, passing through the first heat exchanger 5 and the second heat exchanger 6 in sequence, so that the cold water flowing out of the inlet pipe 11 flows into the outlet pipe 13 after heat exchange through the first heat exchanger 5 and the second heat exchanger 6 in sequence; or it can be composed of two sets of partial pipe networks respectively wound around the inner or outer cavity wall of the first heat exchanger 5 or the second heat exchanger 6, and the two sets of partial pipe networks are connected by a connecting pipe, so that the cold water flowing out of the inlet pipe 11 flows into the outlet pipe 13 after heat exchange through the above two sets of partial pipe networks in sequence.

[0038] Furthermore, a collector 9 is provided below the second heat exchanger 6 to collect the condensate produced by the second heat exchanger 6. The collector 9 is equipped with a return conduit 91, which is connected to the inlet end of the main water inlet pipe 11 to return the condensate to the heat exchange main pipe 12 for recycling. Even further, a filter purification assembly 92 is provided on the return conduit 91 to purify the condensate, trapping suspended solids or contaminants to meet water quality requirements and preventing corrosion or damage to pipeline equipment.

[0039] The hot water storage tank 7 is equipped with a liquid level detection component 71 and a second temperature detection component 72. The liquid level detection component 71 monitors the water level information of the hot water in the storage tank 7, and the second temperature detection component 72 monitors the water temperature information of the hot water in the storage tank 7. During application, before using hot water, the user can pre-store the heated hot water in the storage tank 7 through the energy storage branch pipe 14. Once a certain water level is reached, the supply of hot water to the storage tank 7 is stopped, and hot water is directly supplied to the user through the outlet pipe 13. If the outlet water temperature of the outlet pipe 13 cannot meet the heating temperature or the water volume cannot meet the demand, the storage tank 7 is turned on, and hot water is supplied to the user through the auxiliary water supply pipe 15 to ensure the stability of the heat output. To ensure a constant temperature inside the storage tank 7, the outer wall of the storage tank 7 is covered with a heat insulation layer. Furthermore, an electric heater can be added to the storage tank 7. When the real-time water temperature information detected by the second temperature detection component 72 is lower than a preset value, the electric water heater can be turned on to heat the water in the storage tank 7.

[0040] In some embodiments, a control box 10 is also provided on the inner wall of the heating shell 1. The control box 10 is electrically connected to the burner 2, the electrolysis hydrogen production assembly, the first fan 4, the first heat exchanger 5, the second heat exchanger 6, and the second fan 8, respectively, for controlling the opening and closing of each electrical device. The control box 10 is also electrically connected to the first temperature detection assembly 131, the second temperature detection assembly 72, the liquid level detection assembly 71, the hydrogen concentration detection assembly 304, and the proportional regulating valve 305, etc., to obtain the operating status information of the hot water device, facilitating user monitoring of the operating status and equipment debugging or modification. The control box 10 also contains necessary connecting wires, switch control valves, integrated control valves, a universal controller, an operation panel, switch buttons, etc., necessary for the complete process. However, the above content is not considered a major improvement of this utility model. Those skilled in the art can add layouts based on the process flow and equipment structure selection; this utility model does not impose special requirements or specific limitations in this regard.

[0041] The applicant declares that the above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model fall within the protection and disclosure scope of the present utility model.

Claims

1. A household hydrogen fuel water heater, characterized in that, The aforementioned household hydrogen fuel water heater includes a heating shell, within which are installed a burner, an electrolysis hydrogen production assembly, a first fan, a first heat exchanger, a second heat exchanger, a hot water storage tank, and a heat exchange piping network. The burner is connected to both the electrolysis hydrogen production assembly and the first fan, which is connected to the outside environment to supply air to the burner. The burner is positioned below the first heat exchanger to heat it, and the first heat exchanger is connected to the second heat exchanger. The heat exchange piping network includes an inlet main pipe, a heat exchange main pipe, and an outlet main pipe. The inlet main pipe and the outlet main pipe are independently connected to the outside of the heating shell. The heat exchange main pipe passes sequentially through the second heat exchanger and the first heat exchanger, with its inlet and outlet connected to the inlet main pipe and the outlet main pipe, respectively. The outlet main pipe is also connected to the hot water storage tank via an energy storage branch pipe, and the hot water storage tank is connected to the outside of the heating shell via an auxiliary water supply pipe.

2. The household hydrogen fuel water heater according to claim 1, characterized in that, The heating housing is also equipped with a second fan, the air inlet and air outlet of which are respectively connected to the first heat exchanger and the second heat exchanger.

3. The household hydrogen fuel water heater according to claim 2, characterized in that, The inner wall of the heating shell is equipped with a control box, which is electrically connected to the burner, the electrolysis hydrogen production assembly, the first fan, the first heat exchanger, the second heat exchanger, and the second fan.

4. The household hydrogen fuel water heater according to claim 1, characterized in that, The electrolytic hydrogen production assembly includes an electrolysis tank, which is equipped with a feed pipe, an oxygen exhaust pipe and a hydrogen pipe. The feed pipe and the oxygen exhaust pipe are independently connected to the outside of the heating shell, and the hydrogen pipe is connected to the burner.

5. The household hydrogen fuel water heater according to claim 4, characterized in that, The hydrogen pipeline is equipped with a hydrogen concentration detection component and a proportional control valve in sequence along the gas flow direction.

6. The household hydrogen fuel water heater according to claim 1, characterized in that, The main water outlet pipe is equipped with a first temperature detection component.

7. The household hydrogen fuel water heater according to claim 1, characterized in that, The hot water storage tank is equipped with a liquid level detection component and a second temperature detection component.

8. The household hydrogen fuel water heater according to claim 1, characterized in that, The outer perimeter wall of the hot water storage tank is covered with a heat insulation layer.

9. The household hydrogen fuel water heater according to claim 1, characterized in that, A collector is provided below the second heat exchanger, and the collector is provided with a return conduit, which is connected to the inlet end of the main water inlet pipe.

10. The household hydrogen fuel water heater according to claim 9, characterized in that, The return duct is equipped with a filtration and purification component.

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