High-frequency electromagnetic heat pump water heater unit

Abstract

This utility model discloses a high-frequency electromagnetic heat pump water heater unit, belonging to the technical field of water heater units. It mainly includes a low-temperature water tank, a refrigeration circulation system, and one or more heating tanks. One end of each heating tank is connected to a water supply system, and the other end is connected to a high-temperature water tank. A hollow, spirally distributed electromagnetic metal tube is installed on the outside of each heating tank. The water circulation channels of the refrigeration circulation system are connected to both the electromagnetic metal tube and the low-temperature water tank. A connector is provided on the electromagnetic metal tube. This utility model adds a low-temperature water tank and a refrigeration circulation system, and uses a hollow electromagnetic metal tube instead of an electromagnetic coil. This satisfies the requirements of electromagnetic induction heating and allows the circulating water from the low-temperature water tank to cool the hollow electromagnetic metal tube, eliminating the fire hazard caused by localized high temperatures. This utility model is mainly used for hot water preparation.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot water units, and more specifically, it relates to a high-frequency electromagnetic heat pump hot water unit. Background Technology

[0002] Among existing hot water preparation technologies, air source heat pumps are widely used due to their energy efficiency. However, they rely on ambient air for heat exchange, and their heating efficiency drops significantly at low temperatures (<5℃), sometimes even requiring supplemental electric heating, leading to a surge in energy consumption. Traditional electric heating water equipment is energy-intensive and does not meet energy-saving requirements. While electromagnetic heating technology offers fast heating, its energy conversion efficiency is limited when used alone, and it lacks synergistic design with heat pump systems.

[0003] Chinese patent CN210568766U discloses an electromagnetic energy-assisted heat pump heating device, including a water tank, a vortex heat pump unit, a controller, and a first temperature sensor. An electromagnetic heating coil is wrapped around the outer surface of the water tank. The vortex heat pump unit is connected to the water tank via a circulation pipe, which is equipped with a circulation pump. The water tank is connected to a water supply pipe via a water supply pump, and a return pipe is also connected between the water supply pipe and the water tank. The first temperature sensor is located inside the return pipe. The controller is connected to the first temperature sensor, the vortex heat pump unit, the electromagnetic heating coil, the circulation pump, and the water supply pump. Based on temperature information from the first temperature sensor, the controller can control the operation of the circulation pump and the vortex heat pump unit, or control the operation of the electromagnetic heating coil, and can also control the operation of the water supply pump to provide hot water to the user. This heating device can utilize electromagnetic energy to assist heating for indoor heating when the hot water temperature in the water supply pipe drops and the user urgently needs domestic hot water.

[0004] However, the above-mentioned heat pump heating devices still have the following problems: 1. The electromagnetic heating coil is directly wrapped around the outer surface of the water tank. After long-term use, the coil insulation layer is prone to cracking due to coil heating and high temperature aging of the water tank, resulting in the formation of a conductive circuit between the coil, water tank and shell, causing the equipment shell to become electrified and posing a risk of electric shock to users; 2. There is serious energy waste in the medium and low temperature range. The equipment only uses electromagnetic heating within a return water temperature difference of 3-5℃, and uses heat pump for other conditions. As a result, when the ambient temperature is between 5℃ and 10℃, the water tank heats up slowly, and even if electromagnetic heating is used as an auxiliary, it is only low-power electromagnetic supplementary heating, and the water tank heating efficiency is still low. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-frequency electromagnetic heat pump water heater unit, which adds a low-temperature water tank and a refrigeration circulation system, and uses a hollow electromagnetic metal tube to replace the electromagnetic coil. On the one hand, it meets the requirements of electromagnetic induction heating, and on the other hand, it can use the circulating water in the low-temperature water tank to cool down the hollow electromagnetic metal tube, thus eliminating the fire hazard caused by local high temperature.

[0006] The high-frequency electromagnetic heat pump water heater unit includes a low-temperature water tank, a refrigeration cycle system, and one or more heating tanks. One end of the heating tank is connected to the water supply system, and the other end of the heating tank is connected to a high-temperature water tank. A hollow and spirally distributed electromagnetic metal tube is provided on the outside of the heating tank. The water circulation channel of the refrigeration cycle system is connected to the electromagnetic metal tube and the low-temperature water tank respectively. A connector is provided on the electromagnetic metal tube.

[0007] Preferably, the refrigeration cycle system includes a compressor, a gas-liquid separator, and a heat exchanger. The heat exchanger has a refrigerant channel and a water channel. The refrigerant outlet of the compressor is connected to the inlet of the refrigerant channel through a throttle valve. The outlet of the refrigerant channel is connected to the inlet of the gas-liquid separator, and the outlet of the gas-liquid separator is connected to the refrigerant inlet of the compressor. The outlet of the low-temperature water tank is connected to the inlet of the water channel through a first water pump. The outlet of the water channel is connected to the cooling water inlet of the electromagnetic metal tube, and the cooling water outlet of the electromagnetic metal tube is connected to the low-temperature water tank.

[0008] Preferably, it also includes a second heat exchanger, which has a second refrigerant passage and a second water passage. The refrigerant outlet of the compressor is connected to the inlet of the second refrigerant passage, the outlet of the second refrigerant passage is connected to a throttle valve, the inlet of the second water passage is connected to a water supply system, and the outlet of the second water passage is connected to a high-temperature water tank.

[0009] Preferably, heat exchanger one and heat exchanger two are high-efficiency tank heat exchangers.

[0010] Preferably, the low-temperature water tank has an overflow port at the top, a water inlet at the bottom, a drain pipe at the bottom, and a drain valve on the drain pipe.

[0011] Preferably, the heating tank is wrapped with an insulation layer, the electromagnetic metal tube is disposed on the outside of the insulation layer, and the outside of the electromagnetic metal tube is wrapped with an insulating and heat-insulating layer.

[0012] Preferably, the electromagnetic metal tube includes a hollow metal tube, the hollow metal tube is wrapped with heat shrink tubing, and both ends of the hollow metal tube are sealed and fixedly connected to water pipe joints. The water pipe joints are equipped with detachable cooling water pipes, which are sealed to the water pipe joints. The cooling water pipes are made of insulating material.

[0013] Preferably, the connector is fixedly connected to the hollow metal tube.

[0014] Preferably, it also includes a housing, inside which a water inlet manifold is fixedly connected, the water inlet manifold being connected to the water inlet of the heating tank, a low-temperature water tank being located at the end of the housing away from the heating tank, and a refrigeration cycle system being located at the bottom of the housing near the low-temperature water tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model adds a low-temperature water tank and a refrigeration circulation system, and uses a hollow electromagnetic metal tube instead of an electromagnetic coil. On the one hand, it meets the requirements of electromagnetic induction heating, and on the other hand, the hollow electromagnetic metal tube can be cooled by circulating water in the low-temperature water tank, thus eliminating the fire hazard caused by local high temperature.

[0016] 2. Heat exchanger 1 and heat exchanger 2 are added. Heat exchanger 2 uses high-temperature refrigerant to heat the tap water first, so that the tap water is directly heated and sent to the high-temperature water tank, reducing the heating load of the heating tank; and with the help of electromagnetic heating, the overall heating efficiency and heating time of the system are greatly improved; and then the cooling water of the electromagnetic metal tubes of heat exchanger 1 is cooled through the throttling valve, so that the energy of the refrigerant phase circulation can be fully utilized.

[0017] 3. This utility model achieves a more compact structure through the integrated housing and centralized layout of the control cabinet. The internal low-temperature water tank is located away from the heating tank to avoid the heat from the heating tank affecting the water temperature in the water tank. At the same time, the refrigeration circulation system is located at the bottom of the housing, which facilitates heat dissipation and lowers the center of gravity of the equipment. The heating tank adopts a multi-group parallel connection to meet the water supply needs of various scenarios from households to small businesses. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the front of this utility model; Figure 3 This is a schematic diagram of the internal structure of the back of this utility model; Figure 4 This is a partial structural diagram of the back of the present invention; Figure 5 This is a side view of the present invention. Figure 6 This is a schematic diagram of the present invention; Figure 7 This is a schematic diagram of the structure of an electromagnetic heater; Figure 8 This is a schematic diagram showing the disassembly of an electromagnetic heater; Figure 9 This is a schematic diagram of the structure of an electromagnetic metal tube; Figure 10 for Figure 9 A schematic diagram of the structure of part A.

[0019] In the diagram: 1. Shell; 2. Low-temperature water tank; 201. Overflow port; 202. Drain valve; 203. Water inlet; 3. High-temperature water tank; 4. Control cabinet; 5. Electromagnetic heater; 51. Heating tank; 5101. Water outlet; 5102. Water inlet; 52. Insulation layer; 53. Electrical connector; 54. Cooling water pipe; 55. Electromagnetic metal tube; 5501. Heat shrink tubing; 5502. Hollow metal tube; 5503. Water pipe joint; 56. Insulation layer; 6. Water inlet manifold; 7. Heat exchanger one; 701. Throttling valve; 8. Heat exchanger two; 9. Compressor; 10. First water pump; 11. Gas-liquid separator. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Example 1: A high-frequency electromagnetic heat pump water heater unit includes a low-temperature water tank 2, a refrigeration cycle system, and one or more heating tanks 51. Each heating tank 51 is equipped with a temperature measuring port for easy temperature monitoring. In this embodiment, two heating tanks 51 are preferably connected in parallel. The low-temperature water tank 2 stores low-temperature water, such as tap water or recycled water, to cool the electromagnetic metal tube 55 used for subsequent electromagnetic heating, preventing localized high temperatures and potential fires. The refrigeration cycle system transfers heat through a refrigerant phase change cycle, maintaining the temperature of the low-temperature water tank 2 within a low range. The heating tanks 51 work in conjunction with the electromagnetic metal tube 55, using electromagnetic induction to rapidly heat the water within the heating tanks 51.

[0022] Specifically, one end of the heating tank 51 is connected to the water supply system to receive cold water (such as tap water or low-temperature return water) to provide a water source for the heating process. The other end of the heating tank 51 is connected to a high-temperature water tank 3 to transport the heated water to the high-temperature water tank 3 for storage, making it convenient for users to use at any time and avoiding temperature fluctuations in instantaneous supply. The outer side of the heating tank 51 is equipped with a hollow and spirally distributed electromagnetic metal tube 55. The hollow structure facilitates the flow of cooling water through the interior to cool the electromagnetic metal tube 55 in real time; the spiral distribution is the same as the principle of spiral heating coil, increasing the contact area with the heating tank 51, improving the heat transfer efficiency of electromagnetic induction heating after electricity is applied, and making the heating tank 51 more evenly heated.

[0023] The water circulation channels of the refrigeration cycle system are connected to the electromagnetic metal tube 55 and the low-temperature water tank 2, forming a closed-loop water circuit. Water in the low-temperature water tank 2 is cooled by the refrigeration cycle system, then flows through the electromagnetic metal tube 55 for further cooling, before returning to the low-temperature water tank 2, thus achieving water resource recycling and reducing waste. The electromagnetic metal tube 55 is equipped with a connector 53, which is used to connect to an external high-frequency power supply to provide high-frequency current to the electromagnetic metal tube 55, causing it to generate an electromagnetic induction heating effect. This connector serves as the power input interface for electromagnetic heating.

[0024] like Figures 4 to 6 As shown, the refrigeration cycle system includes a compressor 9, a gas-liquid separator 11, and a heat exchanger 7. The compressor 9 is filled with refrigerant such as Freon. The compressor 9 compresses the refrigerant, changing it from a low-temperature, low-pressure gaseous state to a high-temperature, high-pressure gaseous state, providing energy input to the system and serving as the power source for the heat pump cycle. The gas-liquid separator 11 separates the liquid components in the recirculated refrigerant, preventing liquid refrigerant from causing liquid slugging damage to the compressor 9. The heat exchanger 7 facilitates heat transfer between the refrigerant and the circulating water. In this embodiment, the heat exchanger 7 is preferably a high-efficiency tank heat exchanger. High-efficiency tank heat exchangers have a larger heat exchange area and higher heat exchange efficiency, which can enhance the heat exchange between the refrigerant and water, reduce heat loss, and improve the system's energy efficiency.

[0025] Specifically, heat exchanger 7 is equipped with a refrigerant passage and a water passage. The refrigerant passage is used for the low-temperature, low-pressure refrigerant to flow through and absorb heat from the water passage, thus cooling the water passage. The water passage is supplied with circulating water from the low-temperature water tank 2, which exchanges heat with the refrigerant and cools down, providing a cold water source for the subsequent cooling of the electromagnetic metal tube 55. The refrigerant outlet of compressor 9 is connected to the inlet of refrigerant passage 1 through a throttling valve 701. The throttling valve 701 can throttle and reduce the pressure of the high-temperature, high-pressure refrigerant, making it a low-temperature, low-pressure state, preparing the refrigerant for heat absorption and evaporation in heat exchanger 7, while simultaneously regulating the refrigerant flow rate to match the system load.

[0026] The outlet of refrigerant channel one is connected to the inlet of gas-liquid separator 11, and the outlet of gas-liquid separator 11 is connected to the refrigerant inlet of compressor 9, forming a closed-loop refrigerant cycle. That is, after the refrigerant absorbs heat in heat exchanger 7, the liquid component is separated by gas-liquid separator 11, and the gaseous refrigerant flows back to compressor 9 for recompression, completing the heat pump cycle. The outlet of low-temperature water tank 2 is connected to the inlet of water channel one through the first water pump 10, and the outlet of water channel one is connected to the cooling water inlet of electromagnetic metal tube 55. The cooling water outlet of electromagnetic metal tube 55 is connected to low-temperature water tank 2, forming a closed-loop water cooling cycle. The first water pump 10 provides power to the water path from low-temperature water tank 2 to heat exchanger 7, driving the water circulation. The circulating water cooled by heat exchanger 7 enters electromagnetic metal tube 55, absorbs heat from electromagnetic metal tube 55, and finally flows back to low-temperature water tank 2.

[0027] In this embodiment, the water supply system delivers cold water to be heated to multiple heating tanks 51 via a second water pump; the connector 53 is connected to a high-frequency power supply, causing the electromagnetic metal tube 55 to generate electromagnetic induction, thereby heating the heating tank 51. The electromagnetic metal tube 55 increases the contact area through a spiral distribution, so that the water in the heating tank 51 can be heated quickly and evenly. The hot water in the heating tank 51 is finally delivered to the high-temperature water tank 3 for storage and use by the user.

[0028] Simultaneously, the refrigeration cycle starts, and compressor 9 compresses the refrigerant into a high-temperature, high-pressure gaseous state. After being depressurized to a low-temperature, low-pressure state by throttling valve 701, it enters the refrigerant channel 1 of heat exchanger 7. Water from low-temperature water tank 2 is sent to water channel 1 of heat exchanger 7 by first water pump 10, where it exchanges heat with the low-temperature refrigerant in refrigerant channel 1 and cools down, becoming a cold water source. The cooled water flows into the hollow structure of electromagnetic metal tube 55 to cool it down and prevent localized high temperatures; the water that absorbs heat from electromagnetic metal tube 55 flows back to low-temperature water tank 2, completing the water loop; after absorbing heat in heat exchanger 7, the refrigerant passes through gas-liquid separator 11 to separate the liquid components, and the gaseous refrigerant returns to compressor 9 to complete the refrigerant loop.

[0029] Example 2: like Figures 1 to 10 As shown, a high-frequency electromagnetic heat pump water heater unit also includes a second heat exchanger 8, preferably a high-efficiency tank heat exchanger. The second heat exchanger 8 improves the hot water preparation efficiency through direct heat exchange between the refrigerant and tap water, forming a synergistic heating mode with electromagnetic heating, greatly improving the hot water supply efficiency. Specifically, the second heat exchanger 8 has a second refrigerant channel and a second water channel. The second refrigerant channel is used for high-temperature, high-pressure refrigerant to flow through and directly exchange heat with the water channel, thereby increasing the temperature of the water in the water channel. The second water channel allows tap water to flow directly in, absorbing heat from the refrigerant and increasing its temperature to supplement the system's hot water volume. During installation, the refrigerant outlet of the compressor 9 is connected to the inlet of the second refrigerant channel, and the outlet of the second refrigerant channel is connected to a throttling valve 701, so that the high-temperature refrigerant first heats the tap water through the second heat exchanger 8, and then throttles and cools it through the throttling valve 701 to cool the first heat exchanger 7. The inlet of water channel two is connected to the water supply system, and the outlet of water channel two is connected to the high-temperature water tank 3, so as to realize direct heating of tap water. That is, after the cold water of the water supply system absorbs the heat of the refrigerant through heat exchanger two 8 and is heated, it is directly sent into the high-temperature water tank 3, reducing the working pressure of the heating tank and shortening the hot water preparation time.

[0030] like Figure 2As shown, the upper part of the low-temperature water tank 2 is equipped with an overflow port 201. When the water level in the low-temperature water tank 2 is too high, excess water can be discharged through the overflow port 201 to prevent the water tank from overflowing and damaging the equipment, and to ensure the safe operation of the system. The lower part of the low-temperature water tank 2 is equipped with a water inlet 203, which is connected to an external water source. When the water level in the low-temperature water tank 2 is lower than the set value, water is automatically added to ensure that there is sufficient water in the circulating water circuit and to prevent the first water pump 10 from running dry. A temperature sensor is installed inside the low-temperature water tank 2. A drain pipe is located at the bottom of the low-temperature water tank 2, and a drain valve 202 is installed on the drain pipe. In use, the drain valve 202 works in conjunction with the temperature sensor. When the compressor 9 does not work or malfunctions, the water temperature in the low-temperature water tank 2 will become abnormal. In this embodiment, when the water temperature in the low-temperature water tank 2 is below 10°C or above 35°C, the drain valve 202 automatically drains water, thereby preventing the electromagnetic metal tube 55 from overheating due to excessively high water temperature in the low-temperature water tank 2, or preventing condensation from forming on the outside of the electromagnetic metal tube 55 due to excessively low water temperature in the low-temperature water tank 2. Everything else is the same as in Embodiment 1.

[0031] This embodiment adds a second heat exchanger 8 to the first embodiment. In use, the high-temperature, high-pressure refrigerant discharged from the compressor 9 first enters the refrigerant channel 2 of the second heat exchanger 8, directly exchanging heat with the tap water in the water channel 2. The tap water absorbs heat and heats up, then is directly transported to the high-temperature water tank 3, reducing the load on the heating tank 51. The remaining refrigerant continues to cool. After the refrigerant releases heat through the second heat exchanger 8, it enters the expansion valve 701 to reduce its pressure to a low-temperature, low-pressure state. The subsequent process is the same as in the first embodiment.

[0032] Example 3: A high-frequency electromagnetic heat pump water heater unit also includes a housing 1. The housing 1 integrates all core components into a single unit, facilitating equipment installation, transportation, and maintenance, while protecting internal components from external environmental influences. A water inlet manifold 6 is fixedly connected to the lower part of the housing 1 (near the heating tank 51). The lower end of the heating tank 51 is connected to a water inlet 5102, and the upper end of the heating tank 51 is connected to a water outlet 5101, which is connected to a high-temperature water tank 3. The water inlet manifold 6 is connected to both the water inlet 5102 of the heating tank 51 and a second water passage. The inlet end of the water inlet manifold 6 is connected to the water supply system via a second water pump. The water inlet manifold 6 is used to centrally receive cold water from the water supply system and then distribute it to each heating tank 51 or heat exchanger 8, simplifying pipeline design and facilitating flow control. A low-temperature water tank 2 is located at the end of the housing 1 furthest from the heating tank 51. By separating the low-temperature water tank 2 from the heating tank 51, the influence of the heat from the heating tank 51 on the low-temperature water tank 2 is reduced. The refrigeration cycle system is located at the bottom of the casing 1, near the low-temperature water tank 2, to facilitate heat dissipation and lower the center of gravity of the equipment, thereby improving overall stability. A control cabinet 4 is installed near the rear of the casing 1, centrally arranging electrical components for easy inspection and maintenance.

[0033] like Figures 6 to 10As shown, the heating tank 51 and the electromagnetic metal tube 55 form the electromagnetic heater 5. Specifically, the heating tank 51 is wrapped with an insulation layer 56, which is made of rock wool. This reduces heat loss from the hot water inside the heating tank 51 to the external environment, lowers heat loss, maintains stable water temperature, and improves the system's energy efficiency. It also prevents burns and protects surrounding components. The electromagnetic metal tube 55 is positioned outside the insulation layer 56 to prevent direct contact with the heating tank 51, which could lead to excessively high temperatures and ensure the stability of its insulation layer and cooling function. The electromagnetic metal tube 55 is wrapped with an insulating layer 52, preferably made of polyester fiber insulating cloth with a temperature resistance of ≥150℃. This ensures long-term resistance to the operating temperature of the electromagnetic metal tube and prevents insulation aging. The insulating layer 52 prevents the electromagnetic metal tube 55 from becoming electrified, thus reducing heat radiation loss from the electromagnetic metal tube 55 to the outside environment, thereby concentrating heat to heat the heating tank 51.

[0034] The electromagnetic metal tube 55 includes a hollow metal tube 5502. A connector 53 is fixedly connected to the hollow metal tube 5502 to ensure stable transmission of high-frequency current to the hollow metal tube 5502, guaranteeing the stability of the electromagnetic heating effect and avoiding reduced heating efficiency or spark hazards caused by poor contact. The hollow metal tube 5502 serves as the core heating element for electromagnetic induction, and its interior is used for circulating water to balance the temperature. The hollow metal tube 5502 is externally wrapped with heat-shrink tubing 5501, which provides insulation and protection, prevents short circuits between the hollow metal tube 5502 and external structures, and enhances the pipe's sealing performance.

[0035] Both ends of the hollow metal tube 5502 are sealed and fixedly connected to water pipe joints 5503 to achieve a sealed connection between the hollow metal tube 5502 and the cooling water pipe 54, preventing circulating water leakage and ensuring unobstructed water flow. A detachable cooling water pipe 54 is provided on the water pipe joint 5503. The cooling water pipe 54 is sealed to the water pipe joint 5503. The cooling water pipe 54 is made of insulating material to prevent it from becoming electrified, thus preventing electric shock to operators. It also prevents the water path from forming a conductive loop with other metal components, ensuring the electrical safety of the system. Everything else is the same as in Embodiment 2.

[0036] The working principle of this embodiment is the same as that of embodiment two, the difference being that: the water inlet pipe 6 inside the shell 1 receives cold water from the water supply system through the second water pump, and then distributes it to the water inlet 5102 of the heating tank 51 and the water passage of the second heat exchanger 8 respectively, simplifying the pipeline transportation; the low temperature water tank 2 is far away from the heating tank 51 to avoid the heat of the heating tank 51 affecting the water temperature of the water tank; the refrigeration cycle system is located at the bottom of the shell, which facilitates heat dissipation and lowers the center of gravity of the equipment.

[0037] The rock wool insulation layer 56 outside the heating tank 51 can block heat and prevent scalding. The hollow metal tube 5502 generates heat by passing high-frequency current. Inside, cold water flows through the insulated cooling water pipe 54 to cool down, and the heat shrink tubing 5501 ensures insulation and sealing. The polyester fiber insulation layer 52 outside the electromagnetic metal tube 55 can prevent leakage and retain heat, further improving the reliability of the equipment.

[0038] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-frequency electromagnetic heat pump water heater unit, characterized by: It includes a low-temperature water tank (2), a refrigeration cycle system and one or more heating tanks (51). One end of the heating tank (51) is connected to the water supply system, and the other end of the heating tank (51) is connected to a high-temperature water tank (3). The heating tank (51) is provided with a hollow and spirally distributed electromagnetic metal tube (55) on its outer side. The water circulation channel of the refrigeration cycle system is connected to the electromagnetic metal tube (55) and the low-temperature water tank (2) respectively. The electromagnetic metal tube (55) is provided with a connector (53).

2. The high-frequency electromagnetic heat pump water heater unit according to claim 1, characterized in that: The refrigeration cycle system includes a compressor (9), a gas-liquid separator (11), and a heat exchanger (7). The heat exchanger (7) is provided with a refrigerant channel and a water channel. The refrigerant outlet of the compressor (9) is connected to the inlet of the refrigerant channel through a throttle valve (701). The outlet of the refrigerant channel is connected to the inlet of the gas-liquid separator (11). The outlet of the gas-liquid separator (11) is connected to the refrigerant inlet of the compressor (9). The outlet of the low-temperature water tank (2) is connected to the inlet of the water channel through a first water pump (10). The outlet of the water channel is connected to the cooling water inlet of the electromagnetic metal tube (55). The cooling water outlet of the electromagnetic metal tube (55) is connected to the low-temperature water tank (2).

3. The high-frequency electromagnetic heat pump water heater unit according to claim 2, characterized in that: It also includes heat exchanger 2 (8), which is equipped with refrigerant channel 2 and water channel 2. The refrigerant outlet of compressor (9) is connected to the inlet of refrigerant channel 2, the outlet of refrigerant channel 2 is connected to throttle valve (701), the inlet of water channel 2 is connected to water supply system, and the outlet of water channel 2 is connected to high temperature water tank (3).

4. The high-frequency electromagnetic heat pump water heater unit according to claim 3, characterized in that: The heat exchanger one (7) and heat exchanger two (8) are high-efficiency tank heat exchangers.

5. The high-frequency electromagnetic heat pump water heater unit according to claim 1, characterized in that: The low-temperature water tank (2) has an overflow port (201) at the top, a water inlet (203) at the bottom, a drain pipe at the bottom, and a drain valve (202) on the drain pipe.

6. The high-frequency electromagnetic heat pump water heater unit according to any one of claims 1 to 5, characterized in that: The heating tank (51) is wrapped with an insulation layer (56) on the outside, and the electromagnetic metal tube (55) is located on the outside of the insulation layer (56). The electromagnetic metal tube (55) is wrapped with an insulating and heat-insulating layer (52) on the outside.

7. The high-frequency electromagnetic heat pump water heater unit according to claim 6, characterized in that: The electromagnetic metal tube (55) includes a hollow metal tube (5502), which is wrapped with a heat shrink tubing (5501). Both ends of the hollow metal tube (5502) are sealed and fixedly connected to water pipe joints (5503). A detachable cooling water pipe (54) is provided on the water pipe joint (5503). The cooling water pipe (54) is sealed and connected to the water pipe joint (5503). The cooling water pipe (54) is made of insulating material.

8. The high-frequency electromagnetic heat pump water heater unit according to claim 7, characterized in that: The connector (53) is fixedly connected to the hollow metal tube (5502).

9. The high-frequency electromagnetic heat pump water heater unit according to claim 8, characterized in that: It also includes a housing (1), a water inlet manifold (6) is fixedly connected inside the housing (1), the water inlet manifold (6) is connected to the water inlet (5102) of the heating tank (51), the low temperature water tank (2) is located inside the housing (1) away from the heating tank (51), and the refrigeration cycle system is located at the bottom of the housing (1) near the low temperature water tank (2).

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