Air source heat pump water heater

Abstract

The utility model provides an air source heat pump water heater which comprises a water heater body and a water tank. The water heater body comprises an electric control system, an electric heating device and a heat exchanger. The electric heating device is arranged in the water tank, electrically connected to the electric control system and used for heating water in the water tank; the heat exchanger is connected with the water tank and used for conveying a heating medium to the heat exchanger so that the heating medium can heat water in the water tank. An enamel anti-corrosion layer is arranged on the inner wall of the water tank; at least two magnesium rods are further arranged on the inner wall of the water tank, and at least one of the magnesium rods is electrically connected to the electric control system; and at least two temperature sensors in communication connection with the electric control system are arranged in the water tank. According to the utility model, the enamel anti-corrosion layer and the magnesium rods are arranged, and the magnesium rods are electrically connected with the electric control system to realize electronic corrosion prevention, so that the water tank is slow in rusting and scaling speed and long in service life; the multiple temperature sensors are arranged for temperature detection, the temperature of the water tank can be comprehensively evaluated, and the accuracy of water temperature detection is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to an air source heat pump water heater. Background Art

[0002] Air source heat pump water heater is a device that uses the energy in the air to heat water. It can use less electric energy to drive the compressor to work, and cooperate with the evaporator to make the refrigerant absorb the heat energy in the air, so that the temperature of the discharged air is reduced. The heated refrigerant will eventually exchange heat with the water in the water tank to heat up the water in the water tank and achieve the purpose of producing hot water.

[0003] However, the existing air source heat pump water heaters still have some defects. For example, the heat exchanger in the existing solution is generally set in the water tank. Once the heat exchanger leaks, the refrigerant will enter the water, affecting the water quality in the water tank, posing a great safety hazard. For another example, the existing solution does not fully detect the temperature of the water tank. Due to the large volume of the water tank and the large amount of water stored, the water temperature in different areas of the water tank is quite different, so it is difficult to comprehensively evaluate the water temperature. In terms of the durability of the equipment, the existing solution is prone to rust and scaling of the water tank after a period of use, resulting in a short service life of the equipment.

[0004] Based on this, a solution needs to be proposed to solve at least one of the above problems. Utility Model Content

[0005] In order to overcome the defects of the above-mentioned prior art, the utility model provides an air source heat pump water heater, and the specific technical solution is as follows:

[0006] The utility model provides an air source heat pump water heater, comprising a water heater body and a water tank;

[0007] The water heater body includes an electric control system, an electric heating device and a heat exchanger; the electric heating device is arranged in the water tank and electrically connected to the electric control system, and is used to heat the water inside the water tank; the heat exchanger is connected to the water tank, and the water heater body is used to transport heat medium to the heat exchanger, so that the heat medium heats the water inside the water tank;

[0008] The inner wall of the water tank is provided with an enamel anti-corrosion layer; at least two magnesium rods are provided on the inner wall of the water tank, and at least one of all the magnesium rods is electrically connected to the electric control system;

[0009] At least two temperature sensors which are communicatively connected to the electric control system are arranged inside the water tank. The electric control system is also used to shut down the electric heating device when the water temperature inside the water tank is higher than a preset value.

[0010] In a specific embodiment, the heat exchanger includes a microchannel condenser, and the microchannel condenser is wound around the outer wall of the water tank.

[0011] In a specific embodiment, the preset value ranges from 75°C to 85°C.

[0012] In a specific embodiment, a magnesium rod is provided on the top of the inner wall of the water tank, and the magnesium rod is electrically connected to the electronic control system.

[0013] In a specific embodiment, the water outlet of the water tank is connected to a temperature and pressure safety valve, and the temperature and pressure safety valve is communicatively connected to the electronic control system.

[0014] In a specific embodiment, the water heater body further includes a housing assembly, and a compressor, an evaporator, and a fan for supplying air to the evaporator, which are arranged in the housing assembly;

[0015] The electric control system is arranged in the housing assembly and is respectively connected to the compressor and the fan; the output end of the compressor, the input end of the evaporator and the heat exchanger are connected in sequence, and the output end of the heat exchanger is connected to the input end of the compressor.

[0016] In a specific embodiment, an air inlet and an air outlet are provided on the shell assembly, and a blocking member for blocking foreign objects from entering the air inlet is provided on the shell assembly near the air inlet.

[0017] In a specific embodiment, the housing assembly includes a plurality of sub-housings, and the plurality of sub-housings are snap-connected to each other to form a cabinet, and the electric control system, the compressor, the evaporator and the fan are all arranged in the cabinet;

[0018] A hand grip groove for a person to insert a hand into is arranged on the outer surface of the cabinet, and / or a touch screen communicatively connected to the electric control system is arranged on the outer surface of the cabinet.

[0019] In a specific embodiment, the water tank is disposed in the shell assembly; or, the water tank is partially disposed in the shell assembly and partially exposed outside the shell assembly.

[0020] In a specific embodiment, the evaporator is a finned evaporator.

[0021] The utility model has at least the following beneficial effects:

[0022] The utility model provides an air source heat pump water heater, which realizes dual protection of common anti-corrosion and descaling and electronic anti-corrosion and descaling by arranging at least two magnesium rods inside the water tank, and at least one of all the magnesium rods is electrically connected to the electric control system of the water heater body, thereby slowing down the rust and scaling of the water tank and improving the service life of the equipment. The enamel anti-corrosion layer arranged on the inner wall of the water tank also further improves the anti-corrosion and anti-rust performance of the water tank.

[0023] Furthermore, by setting up the heat exchanger and the electric heating device, the heat exchanger can be used for heating under normal circumstances, and the electric heating device can be used for auxiliary heating under low temperature conditions, thereby ensuring the reliability of the heating of the utility model. In addition, by setting up multiple temperature sensors inside the water tank, the water tank temperature can be comprehensively evaluated, the accuracy of water temperature detection can be improved, and then it is ensured that the electronic control system can accurately turn off the electric heating device when the water temperature of the water tank is higher than the preset value.

[0024] In some cases, the heat exchanger can be a microchannel condenser wrapped around the outer wall of the water tank, so that when the heat exchanger leaks, it will not affect the water quality inside the water tank, thereby improving safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment in which a water tank is arranged in a cabinet;

[0027] Figure 2 It is an exploded schematic diagram of the overall structure of an embodiment in which a water tank is arranged in a vertical cabinet;

[0028] Figure 3 The overall structural diagram of the water tank is shown in FIG.

[0029] Figure 4 It is a schematic diagram of the overall structure of an embodiment in which a water tank portion is exposed outside the cabinet;

[0030] Figure 5 It is a schematic exploded view of the overall structure of an embodiment in which a water tank portion is exposed outside the cabinet.

[0031] Reference numerals:

[0032] 1- water heater body; 11- heat exchanger; 12- shell assembly; 121- sub-shell; 13- electronic control system; 14- compressor; 15- evaporator; 16- fan; 17- electric heating device; 2- water tank; 21- first area; 22- second area; 23- enamel anti-corrosion layer; 3- temperature sensor; 4- magnesium rod; 5- temperature and pressure safety valve; 6- air inlet; 61- blocking member; 7- air outlet; 8- cabinet; 81- hand grip; 82- touch screen. DETAILED DESCRIPTION

[0033] In the following, various embodiments of the present invention will be described more fully. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present invention.

[0034] Hereinafter, the terms "include" or "may include" used in various embodiments of the present invention indicate the presence of disclosed functions, operations or elements, and do not limit the addition of one or more functions, operations or elements. In addition, as used in various embodiments of the present invention, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components or combinations of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components or combinations of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components or combinations of the foregoing.

[0035] In various embodiments of the present invention, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0036] The expressions (such as "first", "second", etc.) used in the various embodiments of the present invention may modify the various components in the various embodiments, but may not limit the corresponding components. For example, the above expressions do not limit the order and / or importance of the elements. The above expressions are only used for the purpose of distinguishing one element from other elements. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of the present invention, the first element may be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0037] It should be noted that in the present invention, unless otherwise clearly specified and defined, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Please refer to Figures 1 to 5 The utility model provides an air source heat pump water heater, which includes a water heater body 1 and a water tank 2.

[0039] Among them, the water heater body 1 includes an electric control system 13, an electric heating device 17 and a heat exchanger 11. The electric heating device 17 is arranged in the water tank 2 and electrically connected to the electric control system 13, and is used to directly add water inside the water tank 2. The heat exchanger 11 is connected to the water tank 2 and is used to heat the water inside the water tank 2. Specifically, the water heater body 1 can input a heat medium into the heat exchanger 11, so that the heat medium and the water inside the water tank 2 perform heat exchange, thereby achieving the purpose of heating the water. In this embodiment, the water heater body 1 is an air source heat pump water heater. At this time, the heat medium is a refrigerant in a high temperature state after heat exchange with the air. By inputting the refrigerant into the heat exchanger 11, the refrigerant and the water inside the water tank 2 perform heat exchange, thereby achieving the purpose of heating the water. In actual applications, heating can be performed by the heat exchanger 11 under normal circumstances, and under special working conditions such as low temperature, the electric heating device 17 can perform auxiliary heating.

[0040] Exemplarily, the heat exchanger 11 may be a microchannel condenser, and the pipes of the microchannel condenser are evenly wound around the outer wall of the water tank 2 to achieve uniform heating. It can be understood that since the heat exchanger 11 of this embodiment is wound around the outer wall of the water tank 2, when the heat exchanger 11 leaks, the refrigerant will not enter the water tank 2 and mix with the water to affect the water quality, and has good safety in use.

[0041] Furthermore, the inner wall of the water tank 2 is provided with an enamel anti-corrosion layer 23. The provision of the enamel anti-corrosion layer 23 can improve the anti-corrosion and anti-rust performance of the water tank 2. In other embodiments, the enamel anti-corrosion layer 23 can also be replaced by a stainless steel layer.

[0042] At least two magnesium rods 4 are also arranged on the inner wall of the water tank 2, and at least one of all the magnesium rods 4 is electrically connected to the electric control system 13, thereby achieving dual protection of ordinary anti-rust and scale removal and electronic anti-rust and scale removal.

[0043] Please refer to Figure 3In this embodiment, a magnesium rod 4 is provided on the top of the inner wall of the water tank 2, and the anti-magnesium rod 4 is electrically connected to the electric control system 13. Other magnesium rods 4 that are not electrically connected to the electric control system 13 are provided in the middle and lower part of the inner wall of the water tank 2.

[0044] In other embodiments, the interior of the water tank 2 can be divided into a first area 21 and a second area 22 (by Figure 3 In addition to being disposed at the top of the inner wall of the water tank 2, the magnesium rod 4 electrically connected to the electronic control system 13 can also be disposed at any position of the inner wall of the water tank 2 in the first area 21. In other embodiments, the magnesium rod 4 can also be replaced by other metal anti-corrosion parts such as aluminum rods and zinc rods, which are not specifically limited here. In addition, the first area 21 and the second area 22 can each account for 50% of the total capacity of the water tank 2, or they can be in other proportions, for example, the first area 21 is the upper area of ​​the water tank 2, the second area 22 is the middle and lower area of ​​the water tank 2, and the ratio of the first area 21 to the second area 22 is 2:3.

[0045] Further, a temperature sensor 3 is provided in each of the first area 21 and the second area 22, and both temperature sensors 3 are connected to the electronic control system 13 by communication, so that the electronic control system 13 of the water heater body 1 can comprehensively evaluate the water temperature in the water tank 2 according to the detection results of the two temperature sensors 3. It can be understood that since the volume of the water tank 2 is generally large, such as 200L or 500L, and the water storage is large, the water temperature in different areas of the water tank 2 has a certain difference. Therefore, by comprehensively evaluating the water temperature through the two temperature sensors 3, the accuracy of water temperature detection can be improved, so that the water heater body 1 can start heating or stop heating the water in the water tank 2 at a more appropriate time, thereby improving the user experience. In addition, the electronic control system 13 can also turn off the electric heating device 17 when the water temperature inside the water tank 2 is higher than the preset value according to the evaluated water temperature inside the water tank 2, so as to ensure the safety of heating. Optionally, the preset value can be in the range of 75°C to 85°C, preferably 80°C. In other embodiments, the number and setting position of the temperature sensor 3 can be designed according to the specific situation, and are not specifically limited here.

[0046] In a specific embodiment, the water outlet of the water tank 2 is connected to a temperature and pressure safety valve 5 (PT valve), and the temperature and pressure safety valve 5 is communicatively connected to the electric control system 13 of the water heater body 1. The temperature and pressure safety valve 5 is a pressure relief valve that integrates overpressure protection and overtemperature protection. When the pressure or temperature in the water tank 2 exceeds a preset safety value, the temperature and pressure safety valve 5 will automatically open, releasing part of the water to reduce the pressure or temperature, thereby protecting the water tank 2 from damage.

[0047] Please refer to Figure 2 and Figure 5In a specific embodiment, the water heater body 1 further includes a housing assembly 12 , and a compressor 14 , an evaporator 15 and a fan 16 for supplying air to the evaporator 15 , which are arranged in the housing assembly 12 .

[0048] The electric control system 13 is disposed in the housing assembly 12 and is respectively connected to the compressor 14 and the fan 16. The electric control system 13 can comprehensively evaluate the water temperatures of the first area 21 and the second area 22 detected by the temperature sensor 3, and control the start and stop of the compressor 14 and the fan 16 according to the evaluated temperature results.

[0049] Specifically, the output end of the compressor 14, the evaporator 15 and the input end of the heat exchanger 11 are connected in sequence, and the output end of the heat exchanger 11 is connected to the input end of the compressor 14. When the equipment is working, the refrigerant is compressed by the compressor 14, and the pressure and temperature increase significantly. The high-temperature and high-pressure refrigerant flows to the evaporator 15, and the fan 16 blows air toward the evaporator 15 to provide the necessary air flow for the heat exchange between the refrigerant and the air. The refrigerant absorbs heat in the process of heat exchange with the air and changes from liquid to gas, and the air is cooled at this time. The refrigerant is further transferred to the heat exchanger 11, thereby exchanging heat with the water in the water tank 2 to heat up the water in the water tank 2.

[0050] Exemplarily, the evaporator 15 may be a fin-type evaporator.

[0051] Further, refer to Figure 4 and Figure 5 The shell component 12 is provided with an air inlet 6 and an air outlet 7. The air outlet 7 is used to discharge the cooled air so as to reduce the outside temperature. A blocking member 61 for blocking foreign objects from entering the air inlet 6 is provided near the air inlet 6 on the shell component 12, so that liquid or fixed substances from the outside are not easy to enter the shell component 12 from the air inlet 6, thereby improving the safety of the equipment. Specifically, the blocking member 61 can be an arc-shaped structure, which can block foreign objects from entering the air inlet 6, and the lower part of the arc-shaped structure has an opening, which is connected to the air inlet 6, so that the air inlet 6 can still maintain a good air intake efficiency.

[0052] In some embodiments, the housing assembly 12 may include a plurality of sub-housings 121, which are snap-connected to each other to form a cabinet 8, and the electric control system 13, the compressor 14, the evaporator 15 and the fan 16 are all arranged in the cabinet 8. The snap-connection design between the sub-housings 121 makes the installation and disassembly of the equipment more convenient, reduces the use of screws, and makes the equipment more beautiful.

[0053] In one embodiment, referring to Figure 1 and Figure 2, the water tank 2 can be arranged in the cabinet 8, and the water tank 2 can be located in the lower area of ​​the cabinet 8, and the components such as the electric control system 13, the compressor 14, the evaporator 15 and the fan 16 are arranged in the cabinet 8 and above the water tank 2. In another embodiment, the water tank 2 can be partially arranged in the cabinet 8 and partially exposed outside the cabinet 8. The specific structure can be referred to Figure 4 and Figure 5 .

[0054] Further, please refer again to Figure 1 and Figure 2 The outer surface of the cabinet 8 may be provided with a hand-grip groove 81 for a person to insert a hand into, so that the person can exert force better when carrying and moving the device, thereby improving the user experience. In addition, a touch screen 82 that is communicatively connected to the electric control system 13 may be provided on the outer surface of the cabinet 8, so that the user can control the entire device through the touch screen 82.

[0055] In summary, the air source heat pump water heater of the utility model realizes the dual protection of common anti-corrosion and descaling and electronic anti-corrosion and descaling by setting at least two magnesium rods 4 inside the water tank 2, and at least one of all magnesium rods 4 is electrically connected to the electric control system 13 of the water heater body 1, which can slow down the rust and scaling of the water tank and improve the service life of the equipment. The enamel anti-corrosion layer 23 set on the inner wall of the water tank 2 also further improves the anti-corrosion and anti-rust performance of the water tank 2.

[0056] Furthermore, by setting the heat exchanger 11 and the electric heating device 17, the heat exchanger 11 can be used for heating under normal circumstances, and the electric heating device 17 can be used for auxiliary heating under low temperature conditions, thereby ensuring the reliability of the heating of the utility model. In addition, by setting a plurality of temperature sensors 3 inside the water tank 2, the water tank temperature can be comprehensively evaluated, the accuracy of water temperature detection can be improved, and thus it is ensured that the electric control system 13 can accurately turn off the electric heating device 17 when the water temperature of the water tank 2 is higher than a preset value.

[0057] In some cases, the heat exchanger 11 can be a microchannel condenser wrapped around the outer wall of the water tank 2, so that when the heat exchanger 11 leaks, it will not affect the water quality inside the water tank 2, thereby improving safety of use.

[0058] Those skilled in the art can understand that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present utility model.

[0059] Those skilled in the art will appreciate that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more devices different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0060] The above serial numbers of the utility model are for description only and do not represent the advantages or disadvantages of the implementation scenarios.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An air source heat pump water heater, characterized in that: It includes a water heater body and a water tank; The water heater body includes an electric control system, an electric heating device and a heat exchanger; the electric heating device is arranged in the water tank and electrically connected to the electric control system, and is used to heat the water inside the water tank; the heat exchanger is connected to the water tank, and the water heater body is used to transport heat medium to the heat exchanger, so that the heat medium heats the water inside the water tank; The inner wall of the water tank is provided with an enamel anti-corrosion layer; at least two magnesium rods are provided on the inner wall of the water tank, and at least one of all the magnesium rods is electrically connected to the electric control system; At least two temperature sensors which are communicatively connected to the electric control system are arranged inside the water tank. The electric control system is also used to shut down the electric heating device when the water temperature inside the water tank is higher than a preset value.

2. The air source heat pump water heater according to claim 1, characterized in that: The heat exchanger includes a microchannel condenser, and the microchannel condenser is wound around the outer wall of the water tank.

3. The air source heat pump water heater according to claim 1, characterized in that: The preset value ranges from 75°C to 85°C.

4. The air source heat pump water heater according to claim 1, characterized in that: A magnesium rod is arranged on the top of the inner wall of the water tank, and the magnesium rod is electrically connected to the electric control system.

5. The air source heat pump water heater according to claim 1, characterized in that: The water outlet of the water tank is connected to a temperature and pressure safety valve, and the temperature and pressure safety valve is communicatively connected to the electronic control system.

6. The air source heat pump water heater according to claim 1, characterized in that: The water heater body further comprises a housing assembly, and a compressor, an evaporator and a fan for supplying air to the evaporator arranged in the housing assembly; The electric control system is arranged in the housing assembly and is respectively connected to the compressor and the fan; the output end of the compressor, the input end of the evaporator and the heat exchanger are connected in sequence, and the output end of the heat exchanger is connected to the input end of the compressor.

7. The air source heat pump water heater according to claim 6, characterized in that: An air inlet and an air outlet are provided on the shell component, and a blocking member for blocking foreign objects from entering the air inlet is provided on the shell component near the air inlet.

8. The air source heat pump water heater according to claim 6, characterized in that: The housing assembly includes a plurality of sub-housings, and the plurality of sub-housings are snap-connected to each other to form a cabinet, and the electric control system, the compressor, the evaporator and the fan are all arranged in the cabinet; A hand grip groove for a person to insert a hand into is arranged on the outer surface of the cabinet, and / or a touch screen communicatively connected to the electric control system is arranged on the outer surface of the cabinet.

9. The air source heat pump water heater according to claim 6, characterized in that: The water tank is disposed in the shell assembly; or, the water tank is partially disposed in the shell assembly and partially exposed outside the shell assembly.

10. The air source heat pump water heater according to claim 6, characterized in that: The evaporator is a fin type evaporator.

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