A multifunctional air source heat pump water heater

Abstract

The present invention relates to the field of energy-saving air conditioning and heating, and specifically refers to a multifunctional air source heat pump water heater, including a main unit and an insulated water tank, wherein the main unit is divided into an upper working chamber, a lower working chamber and an evaporator, the upper working chamber has an ultraviolet sterilization lamp, a negative ion generator, a nano water ion device, an outdoor fan and an indoor fan, the outdoor fan outlet has an outdoor gravity self-closing air valve, the indoor fan outlet has an indoor gravity self-closing air valve, the lower working chamber has a control mainboard, a compressor, a circulation pump, a metal filter and a high-efficiency filter, the metal filter air inlet has an outdoor electric air valve, and the high-efficiency filter air inlet has an indoor electric air valve; the insulated water tank includes a water tank cover and a box body, and is connected to an outdoor fan coil. The four working modes of the present invention can work separately, or can work in combination with each other as needed to meet the functions of cold and hot air, fresh air ventilation, hot water or air sterilization in one room or multiple rooms, and the functions are diverse to meet people's living needs.

Description

Technical Field

[0001] The invention relates to the field of energy-saving air conditioning and heating, and in particular to a multifunctional air source heat pump water heater. Background Art

[0002] At present, most air conditioners are used for cooling in summer and heating in winter. In the south, air conditioners are idle for about 9 months, and the heat generated by cooling is not used for hot water. Although other air source water heaters can heat water every day, the cold air generated by hot water in summer is not recycled, and this very environmentally friendly water heater is rarely installed in urban residences. The reason is that the water tank takes up space and is not beautiful, and the function is single. For example, most hot water machines use electric water heaters, natural gas water heaters, etc. Another reason is that most household air source water heaters are installed near the south-facing balcony, while most south-facing commercial houses have balconies in the south, kitchens are arranged in the north, and toilets are in the north or the middle. The hot water pipeline is too long, and users feel uncomfortable using hot water and waste water. Therefore, it is urgent to develop an air source heat pump water heater that can achieve multi-functionality. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an air source heat pump water heater that can realize multiple functions in one machine, such as household hot water, hot water for heating, cold and hot air for house air conditioning, fresh air for house ventilation, and simultaneous filtering and sterilization.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0005] A multifunctional air source heat pump water heater comprises a main unit and an insulated water tank, wherein the main unit is divided into an upper working chamber and a lower working chamber by a partition, wherein a through hole is arranged on the partition, wherein the upper working chamber and the lower working chamber are connected through the through hole, and an evaporator is installed, wherein the top and bottom ends of the evaporator extend into the upper working chamber and the lower working chamber respectively, wherein an ultraviolet sterilization lamp, a negative ion generator and a nano water ion device are arranged on the upper side of the partition, wherein an outdoor fan is installed on one side of the upper working chamber, wherein an air inlet end of the outdoor fan is connected to the upper working chamber, and an outdoor fan is arranged on the air outlet end of the outdoor fan A gravity self-closing air valve, an indoor fan is provided at one end of the upper working chamber, the air inlet end of the indoor fan is connected to the upper working chamber, an indoor gravity self-closing air valve is provided at the air outlet end of the indoor fan, a control mainboard, a compressor and a circulation pump are provided at the inner bottom side of the lower working chamber, a metal filter is provided at one side of the lower working chamber, the air outlet end of the metal filter is connected to the lower working chamber, an outdoor electric air valve is provided at the air inlet end of the metal filter, a high-efficiency filter is provided at one end of the lower working chamber, the air outlet end of the high-efficiency filter is connected to the lower working chamber, and an indoor electric air valve is provided at the air inlet end;

[0006] The insulated water tank includes a water tank cover and a box body, the box body includes an outer wall and an inner wall, an insulation layer is provided between the outer wall and the inner wall, a condenser is provided on the outer side of the inner wall surrounding the inner wall, the inlet and outlet of the condenser are connected to the evaporator of the main unit through a refrigerant pipeline, a domestic hot water coil is provided inside the inner wall, the water inlet and outlet of the domestic hot water coil extend out of the outer wall respectively, and the box body is provided with a water inlet and outlet for the hot water inside the inner wall to enter and exit.

[0007] Furthermore, an eccentric opening is provided on the top of the box body, and the center position of the top of the box body is connected to the center position of the bottom of the water tank cover through a rotating shaft. A heat exhaust pipe for exhausting hot air in the box body is provided in the water tank cover.

[0008] Furthermore, an auxiliary electric heating device, a temperature detection device and an external heat source interface are installed on the side wall of the box.

[0009] Furthermore, the return water port for hot water inlet and outlet of the box is connected to the water outlet of the circulation pump, the water inlet of the circulation pump is connected to the water outlet for hot water inlet and outlet of the box through a pipe, and an outdoor fan coil unit, an indoor fan coil unit and a floor heating device are provided on the pipe between the circulation pump and the water outlet for hot water inlet and outlet of the box, and the outdoor fan coil unit, the indoor fan coil unit and the floor heating device are connected in parallel.

[0010] Furthermore, the evaporator adopts a silver nano-coated copper tube aluminum fin evaporator, and the metal filter adopts a nano-silver filter.

[0011] Furthermore, the refrigerant return pipe for connecting the evaporator and the condenser is provided with a liquid storage tank, a refrigerant filter and an expansion valve in sequence from the condenser to the evaporator, and the compressor is arranged on the refrigerant delivery pipe for connecting the evaporator and the condenser.

[0012] Furthermore, the compressor is a variable frequency compressor.

[0013] The present invention has the following advantages: the present invention has four working modes, the four working modes can work separately, or can work in combination with each other as needed, to meet the functions of cold air, hot air, fresh air ventilation, domestic hot water, heating hot water or air sterilization in one room or multiple rooms, and the diverse functions can well meet people's life needs; the insulated water tank of the present invention adopts the mutual position of the heat exhaust pipe of the rotatable insulated water tank cover and the eccentric opening on the top of the box body to realize the natural heat dissipation of the internal heat, which can be used as a non-energy-consuming auxiliary heat dissipation method, and has a good energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the host of a multifunctional air source heat pump water heater;

[0015] Figure 2It is a schematic diagram of the partition structure of a multifunctional air source heat pump water heater;

[0016] Figure 3 It is a schematic diagram of the insulation water tank of a multifunctional air source heat pump water heater;

[0017] Figure 4 It is a refrigerant flow diagram of a multifunctional air source heat pump water heater;

[0018] Figure 5 It is a schematic flow chart of the working principle of a multifunctional air source heat pump water heater.

[0019] As shown in the figure: 1. Host; 2. Insulated water tank; 3. Partition; 4. Upper working chamber; 5. Lower working chamber; 6. Evaporator; 7. Ultraviolet sterilization lamp; 8. Negative ion generator; 9. Nano water ion device; 10. Outdoor fan; 11. Outdoor gravity self-closing air valve; 12. Indoor fan; 13. Indoor gravity self-closing air valve; 14. Control main board; 15. Compressor; 16. Circulation pump; 17. Metal filter; 18. Outdoor electric air valve; 19. High efficiency filter; 20. Indoor electric air valve; 21. Water tank cover; 22. Box body; 23, rotating shaft; 24, through hole; 201, outer wall; 202, inner wall; 203, insulation layer; 204, domestic hot water coil; 205, eccentric port; 206, heat exhaust pipe; 207, auxiliary electric heating device; 208, temperature detection device; 209, interface with external heat source; 210, outdoor fan coil; 211, indoor fan coil; 212, floor heating device; 213, condenser; 301, liquid storage tank; 302, refrigerant filter; 303, expansion valve; 304, return medium pipe; 305, delivery medium pipe. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0021] The present invention is described in detail with reference to the accompanying drawings.

[0022] A multifunctional air source heat pump water heater comprises a main unit 1 and an insulated water tank 2, wherein the main unit 1 is divided into an upper working chamber 4 and a lower working chamber 5 by a partition 3 inside the main unit 1, a through hole 24 is provided on the partition 3, the upper working chamber 4 and the lower working chamber 5 are connected through the through hole 24, and an evaporator 6 is installed, the top and bottom ends of the evaporator 6 extend into the upper working chamber 4 and the lower working chamber 5 respectively, an ultraviolet sterilization lamp 7, a negative ion generator 8 and a nano water ion device 9 are provided on the upper side of the partition 3, an outdoor fan 10 is installed on one side of the upper working chamber 4, the air inlet end of the outdoor fan 10 is connected to the upper working chamber 4, and the air outlet end of the outdoor fan 10 is provided with an outdoor gravity self-closing An air valve 11, an indoor fan 12 is provided at one end of the upper working chamber 4, the air inlet end of the indoor fan 12 is communicated with the upper working chamber 4, an indoor gravity self-closing air valve 13 is provided at the air outlet end of the indoor fan 12, a control mainboard 14, a compressor 15 and a circulating pump 16 are provided at the inner bottom side of the lower working chamber 5, a metal filter 17 is provided at one side of the lower working chamber 5, the air outlet end of the metal filter 17 is communicated with the lower working chamber 5, an outdoor electric air valve 18 is provided at the air inlet end of the metal filter 17, a high-efficiency filter 19 is provided at one end of the lower working chamber 5, the air outlet end of the high-efficiency filter 19 is communicated with the lower working chamber 5, and an indoor electric air valve 20 is provided at the air inlet end;

[0023] The insulated water tank 2 includes a water tank cover 21 and a box body 22, the box body 22 includes an outer wall 201 and an inner wall 202, an insulation layer 203 is provided between the outer wall 201 and the inner wall 202, a condenser 213 is provided on the outside of the inner wall 202 surrounding the inner wall 202, the inlet and outlet of the condenser 213 are connected to the evaporator 6 of the host 1 through a refrigerant pipeline, a domestic hot water coil 204 is provided in the inner wall 203, the water inlet and outlet of the domestic hot water coil 204 extend out of the outer wall 201 respectively, and the box body 22 is provided with a water inlet and outlet for hot water entering and exiting the inner wall 203.

[0024] The hot water in the domestic hot water coil 204 can be connected to common cold water use points, such as toilet tanks, mop pools, washing machine faucets, etc. These water use points control the supply of hot and cold water. In winter, when the indoor air is not refrigerated, cold water in the cold water pipe is used. In summer, when the indoor air is refrigerated, hot water in the hot water pipe is used to utilize the water temperature in the insulation water tank 2 to reduce.

[0025] An eccentric opening 205 is provided at the top of the box body 22 , and the top center position of the box body 22 is connected to the bottom center position of the water tank cover 21 through a rotating shaft 23 . A heat exhaust pipe 206 for exhausting hot air in the box body 22 is provided in the water tank cover 21 .

[0026] An auxiliary electric heating device 207 , a temperature detection device 208 and an external heat source interface 209 are also installed on the side wall of the box body 22 .

[0027] The return water port for hot water in and out of the box body 22 is connected to the water outlet of the circulation pump 16, and the water inlet of the circulation pump 16 is connected to the water outlet for hot water in and out of the box body 22 through a pipe. An outdoor fan unit 210, an indoor fan unit 211 and a floor heating device 212 are provided on the pipe between the circulation pump 16 and the water outlet for hot water in and out of the box body 22, and the outdoor fan unit 210, the indoor fan unit 211 and the floor heating device 212 are connected in parallel.

[0028] The evaporator 6 is a silver nano-coated copper tube aluminum fin evaporator, and the metal filter 17 is a nano-silver filter.

[0029] The refrigerant return pipe 304 for connecting the evaporator 6 and the condenser 213 is provided with a liquid storage tank 301, a refrigerant filter 302 and an expansion valve 303 in sequence from the condenser 213 to the evaporator 6, and the compressor 15 is arranged on the refrigerant delivery pipe 305 for connecting the evaporator 6 and the condenser 213.

[0030] The compressor 15 adopts a variable frequency compressor, which is more suitable for strong cooling and strong heating air conditioning. This model can use peak and valley electricity to preheat water, cool and heat, especially heat, because the water tank is insulated and stores heat.

[0031] The present invention is also provided with a four-way valve, which has the same use principle as the four-way valve on the main unit of the existing air conditioner and air source water heater.

[0032] Four working modes of the present invention:

[0033] Mode 1, outdoor air circulation for hot water production: The process is to open the outdoor electric air valve first, and the outdoor air passes through the nano silver filter, i.e. the metal filter, and flows through the lower working chamber of the main unit where the compressor is located, and then passes through the silver nano-coated evaporator. The outdoor fan blows open the outdoor gravity self-closing air valve. At this time, the indoor electric air valve is closed, the indoor fan does not work, and the indoor gravity self-closing air valve is closed. During mode 1, the compressor drives the evaporator and the refrigerant coil of the insulation water tank to realize the refrigerant circulation. The air flows and exchanges heat with the evaporator to become cold air. The refrigerant exchanges heat with the water in the insulation water tank at the refrigerant coil. The water temperature in the insulation water tank rises, providing hot water for indoor heating and air conditioning hot air. The water inlet of the domestic hot water coil on the insulation water tank is connected to the domestic tap water pipe. The tap water flows through the domestic hot water coil and exchanges heat with the hot water in the insulation water tank. The original cold tap water in the hot water coil becomes hot to provide fresh hot water for the home.

[0034] Mode 2, indoor air circulation of cooling air: the process is to open the indoor electric air valve, the air in the room passes through the high-efficiency filter, flows through the compressor and evaporator, and the indoor fan blows open the indoor gravity self-closing air valve. At this time, the heat exchange situation is the same as the heat exchange situation in mode 1, the water in the insulation water tank heats up, and the indoor air cools down. If the cooling air mode is used for a long time, the temperature of the insulation water tank is too high, which will cause the compressor of the host to start high-temperature and high-pressure protection shutdown. At this time, the control motherboard will start the circulation pump and the outdoor fan connected to the insulation water tank in advance according to the temperature feedback information to reduce the water temperature in the insulation water tank; the water tank cover of the insulation water tank can be manually operated to adjust the shaft so that the heat exhaust pipe of the water tank cover corresponds to the eccentric port on the top of the box body to dissipate heat and dissipate the hot water in the insulation water tank; the hot water in the hot water coil can be connected to various domestic water points. Since hot water is often used in summer, such as showering, washing hands, flushing toilets, washing clothes, washing mops, washing dishes and vegetables, etc., the water temperature of the water tank can be reduced.

[0035] Mode 2 has a reverse operation mode, which only needs to control the reversal of the main unit four-way valve to achieve the cooling of hot water in the water tank and blowing hot air into the room. During the reverse operation, the circulation pump and the outdoor fan unit are not started. During the refrigeration or reverse operation mode, the combination of the ultraviolet sterilization lamp, the negative ion generator, and the nano water ion device can be turned on to achieve the goal of filtering dust and dirt, sterilizing and disinfecting the indoor air.

[0036] Mode three, ventilation mode, is to discharge dirty air from indoors to outdoors, and the compressor works to produce hot water at the same time: the process is to open the indoor electric air valve, start the outdoor fan, and the air exhausted from the indoor blows open the outdoor gravity self-closing air valve under the exhaust action of the outdoor fan. The indoor fan is turned off, that is, the indoor gravity self-closing air valve is closed, and the outdoor electric air valve is closed. The hot water making process is the same as mode one. At this time, negative pressure will be generated indoors, causing some fresh air to be added into the house through the gaps in the house envelope structure or open doors and windows to achieve the ventilation function.

[0037] Mode 4, fresh air is to send fresh air from the outside to the indoor, the compressor works, and hot water is produced at the same time: the process is to open the outdoor electric air valve, turn on the indoor fan, and blow open the indoor gravity self-closing air valve under the action of the indoor fan. The outdoor fan is closed, that is, the outdoor gravity self-closing air valve is closed and the indoor electric air valve is closed. The hot water production process is the same as mode 1. Due to the positive pressure in the room, part of the indoor dirty air will be discharged from the gap of the house enclosure structure. You can also install an outdoor exhaust device at the far end of the air flow or open doors and windows to achieve a better fresh air effect. In this process, you can choose to turn on the ultraviolet sterilization lamp, negative ion generator, and nano water ion device in combination as in mode 2 to achieve the goal of fresh air filtration, dust removal, sterilization and disinfection. In winter, the host four-way valve can be controlled to reverse, that is, reverse operation to send warm fresh air to the room.

[0038] Specific implementation of the present invention:

[0039] Under the conditions of good external wall insulation, air tightness of doors and windows, and high thermal insulation, the present invention can be used as a central air conditioner and also has the function of a water heater in both single-family houses and commercial housing suites, thus saving investment costs.

[0040] In the first application scenario, the host and the insulated water tank can be placed indoors, and three holes can be opened on the wall. From bottom to top, the outdoor air inlet is connected to the outdoor electric air valve on the host through the air duct, the outdoor air outlet is connected to the outdoor gravity self-closing air valve on the host through the air duct, and the natural convection heat dissipation outlet of the water tank is connected to the heat exhaust pipe on the water tank cover through the pipe. The host and the insulated water tank are set on both sides of the toilet of the commercial house, because the general homeowner will build a wardrobe in the room, which can be integrated with the wardrobe. After decoration, it is invisible, which also saves space, reduces costs and is beautiful. Being close to the toilet is also convenient for the discharge of condensed water, overflow of the insulated water tank, accidental leakage, and disassembly and washing of the host, and the drainage pipe can be shared with the toilet. Of course, prefabricated panels can also be used to separate space on the wardrobe for the host and the insulated water tank. At this time, the insulated water tank and the host can change shape according to the needs of the space, but it does not affect the function. In addition, toilets generally have external windows communicating with the outside world, which is convenient for installing and inspecting outdoor fan units for hot water heat dissipation on the exterior walls. Moreover, when the cooling time is long and the intensity is high, that is, the house is large, the fan area and fan power can be configured according to demand.

[0041] For single-room applications, you can open the indoor or outdoor electric air valve and use the indoor fan to deliver cold or hot air, which can be used as an air conditioner. For shared multiple rooms, you can connect the air duct to the indoor gravity self-closing air valve and set it up according to the pipeline construction requirements to deliver cold or hot air to each room.

[0042] In addition, considering the aesthetics and the rationality of the air duct, the indoor fan and the indoor gravity self-closing damper can be arranged on the top of the main unit. According to the needs of the room, the calculation configuration such as the compressor power, the copper tube aluminum fin mesh heat exchange area of ​​the evaporator, the indoor and outdoor fan power, the metal filter and the high-efficiency filter air intake, etc. can be adjusted to meet the winter and summer heating and cooling capacity required by commercial housing. At the same time, there is hot water supply, and fresh air can be ventilated and sterilized in the middle. Of course, for the convenience of use, a hot water circulation pump can be equipped to accelerate the output of hot water, or a mobile phone app and other wireless control equipment can be developed to control the opening or closing of each mode at a time, or to control the combination of each working mode in a time period.

[0043] The second application scenario is that the host is arranged outdoors or the water tank is also arranged outdoors. Through the matching interface pipes, indoor air supply and indoor exhaust are achieved. This has a wider application range and can be installed in other types of commercial houses, especially those with no external windows in the toilet or where it is inconvenient to place the host water tank on both sides of the toilet, villas, rental houses, small apartments, etc., to provide hot water, hot air, cold air, fresh air ventilation, sterilization and other functions to improve the living conditions of the house.

[0044] In addition, this model uses hot water for washing clothes, washing dishes, washing mops, and flushing toilets, which is actually more beneficial to indoor hygiene and has a good high-temperature sterilization effect. In particular, the setting of the insulated water tank facilitates room cooling and heating, because water can store more heat per unit volume than air.

[0045] The present invention innovatively uses a partition to place the compressor on the path of the air flow to facilitate compressor cooling, and can also slightly improve the efficiency of hot water production. Because the space where the compressor is located is large, vibration reduction and noise reduction can be carried out calmly. Time-sharing work, scheduled work, scheduled work, and variable frequency compressors can also be used to solve the impact of noise and vibration on people in the room. Similarly, because the space where the indoor and outdoor fans are located is large, the outdoor fan and the air outlet can be enlarged to facilitate noise reduction. The indoor fan can also be large and the air outlet is large. In addition, the indoor fan can be made into a small power. Combined with a DC variable frequency fan, noise and vibration can be reduced well.

[0046] The insulated water tank of this machine adopts a non-pressurized water tank. Tap water flows through the domestic hot water coil for heat exchange to supply hot water. The water tank has a reserved external heat source interface for heat exchange with gas water heaters, balcony or roof solar water heaters, etc., or an emergency auxiliary electric heating device can be directly installed to facilitate heating the hot water inside the insulated water tank. The hot water in the insulated water tank is used for floor heating or indoor fan disk heat exchange, which can meet the winter heating needs of a single room or even a commercial housing unit. The heating method can choose host air conditioning hot air, indoor fan disk hot air, hot water floor heating, and it is a flexible, economical and efficient heating system in non-centralized heating areas, families who go to work or school during the day, elderly rooms, and mother-and-child rooms.

[0047] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design structures and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. A multifunctional air source heat pump water heater, characterized in that The invention comprises a main unit (1) and a heat preservation water tank (2), wherein the main unit (1) is divided into an upper working chamber (4) and a lower working chamber (5) by a partition (3), wherein the partition (3) is provided with a through hole (24), wherein the upper working chamber (4) and the lower working chamber (5) are connected via the through hole (24), and an evaporator (6) is installed, wherein the top and bottom ends of the evaporator (6) extend into the upper working chamber (4) and the lower working chamber (5) respectively, wherein an ultraviolet sterilization lamp (7), a negative ion generator (8) and a nano water ion device (9) are arranged on the upper side of the partition (3), and an outdoor fan (10) is installed on one side of the upper working chamber (4), wherein the air inlet end of the outdoor fan (10) is connected to the upper working chamber (4), and the air outlet end of the outdoor fan (10) is provided with an outdoor gravity self-closing air valve (11). 1), an indoor fan (12) is provided at one end of the upper working chamber (4), the air inlet end of the indoor fan (12) is communicated with the upper working chamber (4), the air outlet end of the indoor fan (12) is provided with an indoor gravity self-closing air valve (13), a control mainboard (14), a compressor (15) and a circulation pump (16) are provided on the inner bottom side of the lower working chamber (5), a metal filter (17) is provided on one side of the lower working chamber (5), the air outlet end of the metal filter (17) is communicated with the lower working chamber (5), the air inlet end of the metal filter (17) is provided with an outdoor electric air valve (18), a high-efficiency filter (19) is provided at one end of the lower working chamber (5), the air outlet end of the high-efficiency filter (19) is communicated with the lower working chamber (5), and the air inlet end is provided with an indoor electric air valve (20); The insulated water tank (2) comprises a water tank cover (21) and a box body (22), the box body (22) comprises an outer wall (201) and an inner wall (202), an insulation layer (203) is provided between the outer wall (201) and the inner wall (202), a condenser (213) is provided on the outer side of the inner wall (202) and surrounds the inner wall (202), the inlet and outlet of the condenser (213) are connected to the evaporator (6) of the main unit (1) through a refrigerant pipeline, a domestic hot water coil (204) is provided inside the inner wall (202), a water inlet and a water outlet of the domestic hot water coil (204) respectively extend out of the outer wall (201), and a water inlet and a water outlet for hot water entering and exiting the inner wall (202) are provided on the box body (22).

2. A multifunctional air source heat pump water heater according to claim 1, characterized in that: An eccentric opening (205) is provided at the top of the box body (22); the center position of the top of the box body (22) is connected to the center position of the bottom of the water tank cover (21) via a rotating shaft (23); and a heat exhaust pipe (206) for exhausting hot air in the box body (22) is provided in the water tank cover (21).

3. The multifunctional air source heat pump water heater according to claim 1, characterized in that: An auxiliary electric heating device (207), a temperature detection device (208) and an external heat source interface (209) are also installed on the side wall of the box body (22).

4. The multifunctional air source heat pump water heater according to claim 1, characterized in that: A water return port for hot water in and out of the box (22) is connected to a water outlet of a circulation pump (16); the water inlet of the circulation pump (16) is connected to a water outlet for hot water in and out of the box (22) via a pipeline; an outdoor fan unit (210), an indoor fan unit (211) and a floor heating device (212) are provided on a pipeline between the circulation pump (16) and the water outlet for hot water in and out of the box (22); the outdoor fan unit (210), the indoor fan unit (211) and the floor heating device (212) are connected in parallel.

5. The multifunctional air source heat pump water heater according to claim 1, characterized in that: The evaporator (6) is a silver nano-coated copper tube aluminum fin evaporator, and the metal filter (17) is a nano-silver filter.

6. The multifunctional air source heat pump water heater according to claim 1, characterized in that: A refrigerant return pipe (304) for connecting the evaporator (6) and the condenser (213) is provided with a liquid storage tank (301), a refrigerant filter (302) and an expansion valve (303) in sequence from the condenser (213) to the evaporator (6), and the compressor (15) is arranged on a refrigerant delivery pipe (305) for connecting the evaporator (6) and the condenser (213).

7. The multifunctional air source heat pump water heater according to claim 1, characterized in that: The compressor (15) is a variable frequency compressor.

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