Anti-freezing water heater

Abstract

The anti-freezing water heater comprises a heat exchange water tank, a smoke exhaust module, a heating piece and a phase change energy storage module, the smoke exhaust module comprises a smoke exhaust shell, the smoke exhaust shell is provided with a smoke inlet and a smoke outlet, the smoke inlet communicates with the heat exchange water tank and the smoke outlet, and the smoke outlet further communicates with the external environment; the heating piece is arranged below the heat exchange water tank and used for heating water in the heat exchange water tank. The phase change energy storage module is arranged on the smoke exhaust shell and used for absorbing heat of air flowing out of the smoke outlet and releasing heat of air flowing in and out of the smoke outlet. According to the anti-freezing water heater, waste heat energy storage can be conducted through high-temperature flue gas discharged by the smoke outlet, heat can be released when cold air flows into the smoke outlet, the cold air flowing into the smoke outlet can be rapidly heated without consuming electric energy or fuel gas chemical energy, the cold air is prevented from being directly blown into the heat exchange water tank, and the anti-freezing effect is good. And frost cracking of the water tank can be prevented.

Description

Technical Field

[0001] This application relates to the field of water heater technology, and more particularly to an antifreeze water heater. Background Technology

[0002] Currently, most gas water heaters employ several antifreeze measures to prevent the water tank from freezing and cracking. One method primarily uses a resistance ceramic heating element, which consumes electrical energy. Another method mainly uses products with a water pump, which primarily prevents freezing by circulating combustion to heat the water in the tank, also consuming electrical energy and gas chemical energy.

[0003] While existing antifreeze technologies can protect water tanks, they cannot fully meet the requirements for preventing backflow and freezing, and they require the consumption of electrical energy or gas chemical energy, posing safety hazards such as electric leakage or gas leaks. Utility Model Content

[0004] This application provides an antifreeze water heater to solve the technical problem that existing antifreeze technologies require the consumption of electrical energy or gas chemical energy, and pose safety hazards such as electric leakage or gas leak.

[0005] In a first aspect, this application provides an antifreeze water heater, the antifreeze water heater comprising:

[0006] Replace the hot water tank;

[0007] The smoke exhaust module includes a smoke exhaust housing, which has a smoke inlet and a smoke outlet. The smoke inlet is connected to the hot water exchange tank and the smoke outlet, and the smoke outlet is also connected to the external environment.

[0008] A heating element, disposed below the hot water tank and used to heat the water in the hot water tank; and

[0009] A phase change energy storage module is disposed in the exhaust housing. The phase change energy storage module is used to absorb heat from the air flowing out of the exhaust port and to release heat from the air flowing into the exhaust port.

[0010] In some possible implementations, the phase change energy storage module is disposed on the outer periphery of the exhaust housing and close to the exhaust port.

[0011] In some possible implementations, the phase change energy storage module is arranged in a ring.

[0012] In some possible implementations, the phase change energy storage module includes an energy storage housing and a phase change material, the energy storage housing having an energy storage cavity and a feeding port, the energy storage cavity storing the phase change material.

[0013] In some possible implementations, the smoke exhaust module further includes a fan disposed within the smoke exhaust housing.

[0014] In some possible implementations, the phase change energy storage module is located on the outlet side of the wind turbine.

[0015] In some possible implementations, the feed port is located at the end of the energy storage housing away from the smoke exhaust module.

[0016] In some possible implementations, the exhaust housing includes a fan sub-housing and an exhaust pipe connected together. The fan sub-housing is provided with an exhaust port, the exhaust pipe is provided with an exhaust port, and the phase change energy storage module is located in the exhaust pipe.

[0017] In some possible implementations, the phase change energy storage module is detachably connected to the flue gas outlet pipe.

[0018] In some possible implementations, the energy storage housing of the phase change energy storage module is integrally formed with the smoke outlet pipe.

[0019] The technical solutions provided in this application have the following advantages compared with the prior art:

[0020] The antifreeze water heater provided in this application embodiment includes a hot water exchange tank, a flue gas module, a heating element, and a phase change energy storage module. The flue gas module includes a flue gas housing with a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to the hot water exchange tank and the flue gas outlet, and the flue gas outlet is also connected to the external environment. The heating element is disposed below the hot water exchange tank and is used to heat the water in the hot water exchange tank. The phase change energy storage module is disposed in the flue gas housing and is used to absorb heat from the air flowing out of the flue gas outlet and to release heat from the air flowing into the flue gas outlet.

[0021] When the heating element heats the hot water tank, high-temperature flue gas flows from the hot water tank into the inlet of the exhaust shell and flows out to the outside through the outlet of the exhaust shell. At this time, the phase change energy storage module absorbs heat from the air flowing out of the outlet, that is, it can use the high-temperature flue gas discharged from the outlet for waste heat energy storage, and can release heat when cold air flows in through the outlet. It can quickly heat the cold air (i.e., backflow) flowing in through the outlet without consuming electrical energy or gas chemical energy, preventing cold air from being blown directly into the hot water tank, thereby preventing the tank from freezing and cracking. Attached Figure Description

[0022] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0025] Figure 1 This is a schematic diagram of the structure of an antifreeze water heater provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a phase change energy storage module provided in an embodiment of this application;

[0027] Figure 3 A cross-sectional schematic diagram of a phase change energy storage module provided in an embodiment of this application;

[0028] Figure 4 A schematic diagram of the flue gas flow direction of an antifreeze water heater during the heating stage, provided as an embodiment of this application;

[0029] Figure 5 This is a schematic diagram of the flue gas flow direction of an antifreeze water heater during the antifreeze stage, provided as an embodiment of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] Antifreeze water heater 10, hot water tank 100, flue gas module 200, flue gas housing 210, flue gas inlet 211, flue gas outlet 212, fan housing 213, flue gas pipe 214, fan 220, air inlet side 221, air outlet side 222, heating element 300, phase change energy storage module 400, energy storage housing 410, energy storage cavity 411, feeding port 412, phase change material 420, controller 500. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0034] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0035] Currently, most gas water heaters employ several antifreeze measures to prevent the water tank from freezing and cracking. One method primarily uses a resistance ceramic heating element, which consumes electrical energy. Another method mainly uses products with a water pump, which primarily prevents freezing by circulating combustion to heat the water in the tank, also consuming electrical energy and gas chemical energy.

[0036] While existing antifreeze technologies can protect water tanks, they cannot fully meet the requirements for preventing backflow and freezing. Furthermore, they consume electrical energy or gas chemical energy and pose safety hazards such as electric leakage or gas leaks.

[0037] To address the aforementioned technical problems in the prior art, this application provides an antifreeze water heater that can utilize the high-temperature flue gas emitted from the flue outlet for waste heat storage and release heat when cold air flows into the flue outlet. This allows for rapid heating of the cold air flowing into the flue outlet without consuming electrical energy or gas chemical energy, preventing cold air from being directly blown into the hot water tank and thus preventing the tank from freezing and cracking.

[0038] See Figures 1-3 , Figure 1This is a schematic diagram of the structure of an antifreeze water heater 10 provided in an embodiment of this application. The antifreeze water heater 10 can be an antifreeze gas water heater. The antifreeze water heater 10 includes a hot water exchange tank 100, a flue gas module 200, a heating element 300, and a phase change energy storage module 400.

[0039] The smoke exhaust module 200 includes a smoke exhaust housing 210, which has a smoke inlet 211 and a smoke outlet 212. The smoke inlet 211 is connected to the hot water exchange tank 100 and the smoke outlet 212, and the smoke outlet 212 is also connected to the external environment.

[0040] The heating element 300 is disposed below the hot water tank 100 and is used to heat the water in the hot water tank 100;

[0041] A phase change energy storage module 400 is disposed in the exhaust housing 210. The phase change energy storage module 400 is used to absorb heat from the air flowing out of the exhaust port 212 and to release heat from the air flowing into the exhaust port 212.

[0042] In this embodiment, when the heating element 300 heats the hot water tank 100, high-temperature flue gas flows from the hot water tank 100 into the inlet 211 of the exhaust housing 210 and flows out to the outside through the outlet 212 of the exhaust housing 210. At this time, the phase change energy storage module 400 absorbs heat from the air flowing out of the outlet 212, that is, it can use the high-temperature flue gas discharged from the outlet 212 for waste heat energy storage, and can release heat when cold air flows into the outlet 212, preventing cold air from being directly blown into the hot water tank 100, thereby preventing the water tank from freezing and cracking.

[0043] In addition, by effectively utilizing the waste heat of high-temperature flue gas, no additional electrical or chemical energy is required, making it energy-saving and environmentally friendly. The phase change energy storage module 400 has high versatility, good anti-freeze effect, and relatively low anti-freeze cost. Furthermore, there are no issues such as leakage hazards caused by electric anti-freeze, or combustion noise and water pump operation noise caused by circulating heating anti-freeze.

[0044] In addition, the antifreeze water heater 10 provided in this application not only has an antifreeze function, but also has the function of preheating the air temperature in the combustion chamber to a certain extent, preventing the problem of initial ignition failure after the whole machine has cooled down, and improving the ignition success rate under extreme conditions (low temperature, low pressure).

[0045] In some possible implementations, the antifreeze water heater 10 may also include a main controller 500, which is connected to the heating element 300 and the fan 220 and is used to control the opening and closing of the heating element 300 and the fan 220.

[0046] In some possible implementations, the phase change energy storage module 400 is disposed on the outer periphery of the exhaust housing 210 and close to the exhaust port 212.

[0047] Thus, by placing the phase change energy storage module 400 on the outer periphery of the exhaust housing 210, the phase change energy storage module 400 can be prevented from blocking the discharge of high-temperature flue gas inside the water heater when the heating element 300 replaces the water tank 100 for heating.

[0048] In some possible implementations, the phase change energy storage module 400 is arranged in a ring shape.

[0049] In some possible implementations, the phase change energy storage module 400 includes an energy storage housing 410 and a phase change material 420. The energy storage housing 410 has an energy storage cavity 411 and a feeding port 412, and the energy storage cavity 411 stores the phase change material 420.

[0050] Among them, the phase change energy storage module 400 mainly utilizes the property of phase change material 420 (PCM) to absorb or release a large amount of latent heat during solid-liquid phase change, storing the thermal energy converted from the latent heat energy in the high-temperature flue gas during the chemical combustion of fuel gas; it is mainly divided into two stages:

[0051] ① Heating Stage: During normal use of the water heater, the latent heat in the high-temperature flue gas continuously heats the phase change material 420 to its phase change temperature (e.g., 50-60℃). The phase change material 420 melts and stores heat (e.g., Figure 4 (As shown).

[0052] ② Anti-freeze stage: In the dead of winter, when cold air from the water heater's flue backflows into the flue outlet 212, the phase change material 420 solidifies and releases latent heat, rapidly heating the cold air and preventing it from being directly blown into the heat exchanger, i.e., the hot water tank 100. This continuously prevents the hot water tank 100 from freezing and cracking. (e.g.) Figure 5 (As shown).

[0053] In some possible implementations, the phase change material 420 may include paraffin (melting point 40-60°C), fatty acids (such as lauric acid), hydrates (such as sodium acetate trihydrate), etc.

[0054] In some possible implementations, the phase change energy storage module 400 further includes a cover for covering the feeding port 412 after feeding is completed.

[0055] In some possible implementations, the smoke exhaust module 200 further includes a fan 220 disposed within the smoke exhaust housing 210.

[0056] Thus, by placing the fan 220 inside the exhaust housing 210, the high-temperature flue gas flowing into the exhaust housing 210 through the inlet 211 can be promptly discharged to the outlet 212 when the heating element 300 is heating the hot water tank 100.

[0057] In some possible implementations, the phase change energy storage module 400 is located on the air outlet side 222 of the fan 220.

[0058] Thus, the phase change energy storage module 400 is located on the air outlet side 222 of the fan 220, and can absorb heat from the high-temperature flue gas flowing out of the air outlet side 222 of the fan 220 to store heat.

[0059] In some possible implementations, the feed port 412 is located at one end of the energy storage housing 410 away from the smoke exhaust module 200.

[0060] By placing the feed port 412 at the end of the energy storage housing 410 away from the smoke exhaust module 200, that is, placing the feed port 412 at the top of the energy storage housing 410, the leakage of the phase change material 420 stored in the energy storage cavity 411 from the feed port 412 can be avoided when the water heater is in use.

[0061] In some possible implementations, the exhaust housing 210 includes a fan sub-housing 213 and an exhaust pipe 214 connected to each other. The fan sub-housing 213 is provided with an exhaust port 211, and the exhaust pipe 214 is provided with an exhaust port 212. The phase change energy storage module 400 is located in the exhaust pipe 214.

[0062] In some possible implementations, the phase change energy storage module 400 is detachably connected to the flue gas pipe 214.

[0063] The phase change energy storage module 400 is detachably connected to the exhaust housing 210, which facilitates the installation and replacement of the phase change energy storage module 400.

[0064] The phase change energy storage module 400 can be fitted onto the flue pipe 214 and directly contact the flue pipe 214 for heat transfer.

[0065] In some possible implementations, the energy storage housing 410 of the phase change energy storage module 400 is integrally formed with the smoke outlet pipe 214.

[0066] When the energy storage shell 410 and the flue pipe 214 are integrally formed, the contact between the two is closer and more seamless, which helps to establish a more direct and efficient heat transfer path, so that the high-temperature flue gas can more effectively transfer heat to the phase change material 420, thereby improving the overall energy absorption efficiency.

[0067] Furthermore, one-piece molding can simplify the production process, reduce assembly steps and time, and help control costs.

[0068] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0069] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and 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 application.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0072] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0073] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0074] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0075] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A freeze-proof water heater, characterized by comprising: The anti-freezing water heater comprises: a heat exchange water tank; a smoke exhaust module comprising a smoke exhaust shell having a smoke inlet and a smoke outlet, the smoke inlet being communicated with the heat exchange water tank and the smoke outlet, and the smoke outlet being further communicated with an external environment; a heating element arranged below the heat exchange water tank and used for heating water in the heat exchange water tank; and a phase change energy storage module arranged in the smoke exhaust shell, the phase change energy storage module being used for absorbing heat from air flowing out of the smoke outlet and releasing heat to air flowing into the smoke outlet.

2. The freeze-proof water heater according to claim 1, wherein The phase change energy storage module is arranged at an outer periphery of the smoke exhaust shell and close to the smoke outlet.

3. The freeze-proof water heater according to claim 1, wherein The phase change energy storage module is arranged in a ring shape.

4. The freeze-proof water heater according to claim 1, wherein The phase change energy storage module comprises an energy storage shell and a phase change material, the energy storage shell having an energy storage cavity and a charging port, and the energy storage cavity storing the phase change material.

5. The freeze-proof water heater according to claim 1, wherein The smoke exhaust module further comprises a fan arranged in the smoke exhaust shell.

6. The freeze-proof water heater according to claim 5, wherein The phase change energy storage module is located at an air outlet side of the fan.

7. The freeze-proof water heater according to claim 4, wherein The charging port is arranged at an end of the energy storage shell away from the smoke exhaust module.

8. The freeze-proof water heater according to claim 4, wherein The smoke exhaust shell comprises a fan sub-shell and a smoke outlet pipe connected with each other, the fan sub-shell being provided with the smoke inlet, the smoke outlet pipe being provided with the smoke outlet, and the phase change energy storage module being arranged in the smoke outlet pipe.

9. The freeze-proof water heater according to claim 8, wherein The phase change energy storage module is detachably connected with the smoke outlet pipe.

10. The freeze-proof water heater according to claim 9, wherein The energy storage shell of the phase change energy storage module is integrally formed with the smoke outlet pipe.

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