CN201163124Y - Air-solar-ground energy three heat source compound heat pump device - Google Patents

Abstract

An air-solar-ground energy composite heat pump device with three heat sources, one of the two heat exchange water inlets of the heat storage tank (11) in the device is connected to the water outlet of the solar heat collector (12) , the other water inlet is connected with the underground heat source water supply pipeline; one water outlet in the two heat exchange water outlets of the heat storage tank (11) is connected with the water inlet of the solar heat collector (12), and the other water outlet is connected with the water inlet of the solar heat collector (12). After the underground heat source water supply pipeline is connected in parallel, it passes through the nozzle of the liquid heat source channel in the two medium channels formed by the inner and outer sleeves in the second circulating water pump (6) and the fin-casing type three-medium composite heat exchanger (2). The other end of the nozzle of the liquid heat source channel is connected with the underground heat source water supply pipe and the underground heat source return water pipe respectively; The two ports of the working medium channel are respectively connected with the two ports of the heat exchange tube in the user side heat exchanger (3).

Description

Air-solar-ground energy three heat source composite heat pump device

technical field

The utility model relates to the fields of air-source heat pumps, ground-source heat pump air conditioners and solar heat utilization, in particular to a composite heat pump device of air-solar-ground energy three heat sources.

Background technique

With the development of society and the improvement of people's living standards, energy consumption for heating, air conditioning and domestic hot water production accounts for an increasing proportion of the total energy. For this reason, vigorously developing and effectively utilizing renewable energy has become a priority development strategy for all countries. As a renewable clean energy with huge application prospect and market, solar energy has been paid more and more attention to its development and effective utilization. As a comprehensive technology for solar heat utilization, solar heat pump organically integrates solar heat collection technology and heat pump technology, which can simultaneously improve solar heat collection efficiency and heat pump system performance. Therefore, innovation and development of low-cost, high-efficiency new solar heat pump technology and products have become the research focus and development direction of solar heat pump technology. However, solar energy is an intermittent energy source, which cannot be directly used in rainy days and nights, which greatly limits the application of solar heat pumps. Ground source heat pump is a high-efficiency energy-saving device, which has obvious advantages such as environmental protection, energy saving, economy, and reliability. The ground source heat pump uses groundwater, underground soil, and heat from rivers and lakes as the cold and heat source of the heat pump air-conditioning system, and makes full use of geothermal energy, a renewable energy source, to realize the efficient operation of the heat pump air-conditioning system throughout the year. However, ground source heat pumps still have problems such as difficulty in groundwater recharge, large amount of groundwater circulation, high energy consumption of circulating water pumps, and too many underground pipes. The air source heat pump uses air as the cold and heat source. It has a simple structure, is easy to install and use, and can make full use of the energy in the air. It is an efficient and energy-saving air-conditioning equipment. However, when the outdoor temperature is too low in winter, the evaporation temperature of the air source heat pump system is too low, the COP drops sharply, the energy consumption of the system increases, and even cannot start normally, which cannot meet the normal heating requirements.

Contents of the invention

The purpose of this utility model is to provide an air-solar-ground energy three-heat source compound heat pump device that realizes the comprehensive utilization of energy on the basis of making full use of the existing mature technologies of air-source heat pump, ground-source heat pump and solar hot water heat collection . The device not only solves the problem of unstable solar energy, but also makes full use of solar energy, reduces groundwater consumption and energy consumption of ground source heat pumps, and organically combines solar water heating systems, air source heat pumps and ground source heat pumps.

The purpose of this utility model can be realized by following technical measures, but does not limit the utility model.

The air-solar-earth energy composite heat pump device of the utility model includes a compressor, a fin-in-tube type three-medium composite heat exchanger, a user-side heat exchanger, a four-way reversing valve, a throttle valve, and a A circulating water pump, a second circulating water pump, a bypass valve, a solar heat collector, and a heat storage tank with a heat exchange coil installed in the box; wherein one of the two water inlets of the heat storage tank passes through The valve set between the pipelines is connected to the water outlet of the solar collector, and the other water inlet is respectively connected to the underground heat source water supply pipeline and the liquid in the finned and sleeved three-medium compound heat exchanger through the bypass valve and the valve. The outlets of the heat source medium channels are connected; one of the two water outlets of the heat storage tank is connected to the water inlet of the solar collector through the valve and the first circulating water pump arranged between the pipelines, and the other water outlet is connected through the After the valve is connected in parallel with the underground heat source water supply pipeline, it passes through the second circulating water pump and one of the two medium channels composed of inner and outer sleeves in the finned and sleeved three-medium composite heat exchanger—the liquid heat source channel tube One end of the nozzle of the liquid heat source channel is connected with the nozzle; the other end of the liquid heat source channel nozzle is respectively connected with the underground heat source return water pipeline and the water inlet of the heat exchanger in the heat storage tank through the valves arranged between the pipelines; the fins- In the sleeve-type three-medium composite heat exchanger, the other medium in the two medium passages composed of inner and outer sleeves—the heat pump working medium passage nozzle, one end of the nozzle passes through the four-way reversing valve, compressor and One port of the heat exchange tube in the user-side heat exchanger is connected, and the other end of the nozzle of the heat pump working medium channel is connected to the other port of the above-mentioned heat exchange tube in the user-side heat exchanger through a throttle valve; the fin- The air heat source medium channel is formed between the outer wall of the outer casing and the fins of the casing type three-medium composite heat exchanger.

The connection method between the hot water storage tank and other related components described in the utility model can also be realized by adopting the following technical measures: the water inlet connected with the heat storage cavity of the hot water storage tank is connected with the solar energy through the valve arranged between the pipelines. The water outlet of the heat collector is connected, and the water outlet connected with the heat storage chamber of the heat storage tank is connected with the water inlet of the solar heat collector through the valve and the first circulating water pump arranged between the pipelines; The water inlet of the heat exchange coil in the water tank is connected to the underground heat source water supply pipeline through a bypass valve, and the water outlet of the heat exchange coil is connected in parallel with the underground heat source water supply pipeline through the second circulating water pump and the fin sleeve type In the three-medium composite heat exchanger, one end of the liquid heat source channel, one of the two medium channels formed by the inner and outer sleeves, is connected. The hot water storage tank of the utility model is provided with a domestic hot water supply nozzle and a replenishment nozzle. A domestic hot water tank can also be installed separately. The water inlet in the domestic hot water tank is connected to the water outlet of the solar collector through a valve arranged between the pipelines, and the water outlet is connected to the water inlet of the solar collector through a valve. connected; the domestic hot water tank is provided with a domestic hot water supply nozzle and a water replenishment nozzle.

The connection mode between the heat storage tank and other related components in the utility model can also be realized by adopting the following technical measures: the water inlet connected with the heat storage chamber of the heat storage tank is connected with the underground heat source water supply pipeline through a bypass valve The water outlet connected to the heat storage chamber of the heat storage tank is connected in parallel with the underground heat source water supply pipe, and then passes through the second circulating water pump and the two fin-tube type three-media composite heat exchangers consisting of inner and outer tubes. One of the media in the medium channel—one end of the liquid heat source channel nozzle is connected; the water inlet of the heat exchange coil arranged in the water storage tank is connected with the outlet of the solar collector through the valve arranged between the pipelines. The water outlet of the heat exchange coil is connected to the water inlet of the solar collector through the valve and the first circulating water pump arranged between the pipelines; The valve between them is connected with the water inlet of the heat exchange coil installed in the living water tank, and the water outlet of the heat exchange coil is connected with the water inlet of the solar collector through the valve; Water supply spout and refill spout.

The fin-casing type three-medium compound heat exchanger described in the utility model includes an outer casing, an inner casing worn in the lumen of the outer casing, and a fin combined with the outer wall of the outer casing; the inner casing The outer diameter of the casing is smaller than the hole diameter of the outer casing, and the annular space between the outer wall of the inner casing and the inner wall of the outer casing forms a medium (heat pump working medium) channel, and the lumen of the inner casing forms another medium (liquid state) heat source) channel; the third medium (gas heat source) channel is formed between the outer wall of the outer casing and the fins. The technical solution of the fin-tube type three-medium compound heat exchanger has been disclosed in the patent application document with the patent application number of "200710054879.8" and the filing date of 20070801.

Because the technical solution of the utility model combines solar hot water heat collection technology, ground source heat pump technology and air source heat pump technology scientifically and rationally, and combines the gaseous heat source heat exchanger and the liquid heat source heat exchanger into one, the design The integrated fin-tube type three-medium compound heat exchanger makes the whole system more flexible and changeable in the use of air heat source, solar energy and ground energy. The heat exchanger (as an evaporator) can use air source, solar low-temperature heat medium and underground heat source as heat pump heat source at the same time, and can use air source, solar low-temperature heat medium or underground heat source as heat pump heat source alone, and can also choose any of the above Two of the three are used as the heat source of the heat pump. The system can also realize the storage of solar energy collected during the day for use by the heat pump at night, solving the problem that solar energy is intermittent and cannot be directly used at night, thereby fully improving the working efficiency of the heat pump in winter.

The utility model has the following advantages:

(1) It can simultaneously utilize solar energy, underground heat sources and air, which are renewable and clean energy sources with a huge amount of resources. Its application range is very wide, and it is not limited by climate conditions and water source conditions;

(2) Only one heat exchanger—the fin-tube composite heat exchanger can be used to obtain heat from solar hot water, underground heat sources and air at the same time, which can stabilize the heat supply coefficient of performance (COP) and operation of the heat pump unit While the reliability is obviously improved, the system composition is simplified;

(3) The solar hot water loop is used as the low-temperature heat source of the evaporator of the heat pump air conditioner, which can realize the low-temperature heat collection of the solar collector. The temperature of the hot water is usually 20-30°C, the heat collection efficiency of the collector is improved, and the heat dissipation loss is small.

The air-solar-ground energy composite heat pump of the utility model can be widely used in all places where air source heat pumps can be used, such as civil buildings, public buildings, and villa buildings.

Description of drawings

Fig. 1 is the structure schematic diagram of the utility model.

Fig. 2 is the second embodiment of the present utility model.

Fig. 3 is the third embodiment of the present utility model.

Serial numbers in the picture: 1 compressor, 2 fin-tube compound heat exchanger, 2' fan, 3 user-side heat exchanger, 4 four-way reversing valve, 5 throttle valve, 6 second circulating water pump, 10 changing Heat coil, 11 hot water storage tank, 12 solar heat collector, 13 first circulating water pump, 7, 8, 9, 14, 15, 16, 17, 20, 21 are valves connected between pipelines, 18 life water tank.

Fig. 4 is a structural schematic diagram of the fin-tube composite heat exchanger in Fig. 1 , Fig. 2 and Fig. 3 .

Serial number in the figure: 22 is another medium (liquid heat source) channel formed by the lumen of the inner sleeve, 23 is a medium (heat pump working medium) channel formed by the annular space between the outer wall of the inner sleeve and the inner wall of the outer sleeve , A third medium (gas heat source) channel formed between the outer wall of the 24 outer casing and the fins, 25 fins, 26 outer casings, and 27 inner casings.

Detailed ways

The utility model will be further described below in conjunction with embodiment (accompanying drawing):

Example 1

As shown in Figure 1, the air-solar-ground energy composite heat pump device of the present utility model includes a compressor 1, a fin-tube type three-medium composite heat exchanger 2, a user-side heat exchanger 3, a four-way The reversing valve 4, the throttle valve 5, the first circulating water pump 13, the second circulating water pump 6, the bypass valve 9, the solar heat collector 12, and the heat storage tank 11 provided with the heat exchange coil 10 in the box; The water inlet connected to the thermal storage chamber of the hot water storage tank 11 is connected to the water outlet of the solar collector 12 through the valve 15 arranged between the pipelines, and the water outlet connected to the thermal storage chamber of the hot water storage tank 11 is passed through The valve 14 and the first circulating water pump 13 arranged between the pipelines are connected to the water inlet of the solar collector 12; the water inlet of the heat exchange coil 10 arranged in the heat storage tank 11 is connected to the underground The heat source water supply pipeline is connected, and the water outlet of the heat exchange coil 10 is connected in parallel with the underground heat source water supply pipeline, and then passes through the second circulating water pump 6 and the fin-tube type three-media compound heat exchanger 2, which is composed of inner and outer tubes One of the two media channels—one end of the mouth of the liquid heat source passage is connected; the other end of the mouth of the liquid heat source passage is respectively connected to the underground heat source water supply pipeline, underground The heat source and return pipes are connected; the other medium in the two medium passages formed by the inner and outer sleeves in the fin-tube three-medium composite heat exchanger 2 - one end of the nozzle of the heat pump working medium passage passes through The four-way reversing valve 4 and the compressor 1 are connected to one port of the heat exchange tube in the heat exchanger 3 on the user side, and the other end of the nozzle of the working medium channel of the heat pump is connected to the heat exchanger 3 on the user side through a throttle valve 5 The other port of the above-mentioned heat exchange tube; the air heat source medium channel is formed between the outer wall of the outer tube of the fin-tube type three-medium composite heat exchanger 2 and the fins; the domestic hot water supply interface is set on the heat storage tank 11 and hydration interface.

Example 2

As shown in Figure 2, the difference between this embodiment and Embodiment 1 is that: no domestic hot water supply interface and water replenishment port are provided on the hot water storage tank 11, but a domestic hot water tank 18 is separately provided. , the water inlet in the living water tank is connected with the water outlet of the solar heat collector through a valve 20 arranged between pipelines, and the water outlet is connected with the water inlet of the solar heat collector through a valve 21; on the living water tank A domestic hot water supply nozzle and a water replenishment nozzle are provided.

Example 3

As shown in Figure 3, the difference between this embodiment and Embodiment 2 is that: the water inlet connected to the heat storage cavity of the hot water storage tank 11 is connected to the underground heat source water supply pipeline through the bypass valve 9, and connected to the hot water storage chamber. The water outlet connected to the thermal storage chamber of the tank 11 is connected in parallel with the underground heat source water supply pipeline, and then passes through the second circulating water pump 6 and the two medium channels in the fin-tube three-media composite heat exchanger 2 composed of inner and outer tubes One end of the liquid heat source passage pipe mouth is connected; the water inlet of the heat exchange coil 10 arranged in the heat storage tank 11 is connected with the solar heat collector 12 through the valve 15 arranged between the pipelines. The water outlets are connected, and the water outlet of the heat exchange coil 10 is connected with the water inlet of the solar heat collector 12 through a valve 14 and a first circulating water pump 13 arranged between the pipelines.

As shown in Figure 4, the fin-tube type three-medium compound heat exchanger 2 described in the utility model includes a shell, a fan 2' located in the shell and a heat exchanger body, and the heat exchanger body includes Outer sleeve 26 coiled in S shape, inner sleeve 27 worn in the outer sleeve lumen, and fins 25 combined with the outer wall of the outer sleeve; the outer diameter of the inner sleeve is smaller than the aperture of the outer sleeve, and is composed of The annular space between the outer wall of the inner sleeve and the inner wall of the outer sleeve constitutes the channel 23 for the heat pump working medium, the lumen of the inner sleeve forms the channel 22 for the liquid heat source medium, and the fins 25 and the outer wall of the outer sleeve form the channel 20 for the gaseous heat source. When exchanging heat with the gaseous heat source alone, the channel 22 is closed, the fan is turned on, and the heat pump working medium in the channel 23 exchanges heat with the gaseous heat source. When exchanging heat with the liquid heat source alone, the fan is turned off, and the heat pump working medium in the channel 23 exchanges heat with the liquid heat source medium in the channel 22 . When simultaneous heat exchange with liquid and gaseous heat sources is required, channel 22 is turned on and the fan is turned on, and the heat pump working medium in channel 23 exchanges heat with the liquid heat source medium in channel 22 and the gaseous heat source channel in channel 24 at the same time. The technical solution of the fin-tube type three-medium compound heat exchanger has been disclosed in the patent application document with the patent application number of "200710054879.8" and the filing date of 20070801.

The solar heat collector 12 in the utility model can be selected from an all-glass vacuum tube type solar heat collector or a flat plate type solar heat collector, and the heat collecting area is determined according to the power of the heat pump and the solar radiation conditions of the installation site. The solar heat collector 12 can be placed on the roof or balcony, and the hot water storage tank 11 and the domestic hot water tank 18 are made of steel plates or other hard materials, and can be placed indoors or outdoors. Electric auxiliary heaters are arranged in the hot water storage tank 11 and the domestic hot water tank 18, thereby ensuring the domestic hot water supply temperature throughout the year. The heat medium in the outdoor and indoor pipelines of the solar heat collection and heat storage system in the utility model and the heat storage medium in the heat storage tank 11 can be water or other antifreeze liquids. The heat exchange coils in the hot water storage tank 11 and the domestic hot water tank 18 are copper tubes or other coils with high heat transfer coefficients.

The compressor 1 in the utility model can be a frequency-selective compressor or a variable-frequency compressor, and existing commonly used working fluids and new environment-friendly working fluids can be used as refrigerants.

Work process of the present utility model is as follows:

(1) Heat pump working mode

1) Air source heating alone and solar domestic hot water mode:

The fan 2' is turned on, the first circulating water pump 13 is turned on, the valves 14 and 15 are turned on, the second circulating water pump 6 is turned off, and the valves 7, 8, 9, 16, and 17 are turned off; the refrigerant is compressed by the compressor 1 and reversed through the four-way After releasing heat from the valve 4 to the user-side heat exchanger 3 to the room, it enters the fin-tube composite heat exchanger 2 through the throttle valve 5 to absorb the heat in the air and then enters the compressor to enter the next cycle; the heat storage tank 11 The domestic hot water enters the solar heat collector 11 through the first circulation pump 13, returns to the heat storage tank 11 through the valve 15 after being heated.

2) Solar heat medium heating mode:

The fan 2' is turned off, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 8, 14, 15, 17 are turned on, and the valves 7, 9, 16 are turned off; The water pump 13 enters the solar heat collector 12 and is heated and sent back to the heat storage tank 11; the heat medium in the heat exchange coil 2 10 in the heat storage tank 11 absorbs the heat in the heat storage tank 11 and goes through the second cycle The water pump 6 is sent into the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and after releasing heat to the room through the four-way reversing valve 4 to the user-side heat exchanger 3, it is throttled. The valve 5 enters the fin-tube compound heat exchanger 2 to absorb the heat of the solar heat medium, and then enters the compressor to enter the next cycle.

3) Ground energy independent heating and solar domestic hot water mode

The fan 2' is turned off, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, valves 7, 14, 15, 16 are opened, valves 8, 9, 17 are closed; the underground heat medium is sent through the valve 7, and the second circulating water pump 6 The fin-in-tube compound heat exchanger 2 provides the heat source for the heat pump and sends it back to the ground through the valve 16; the refrigerant is compressed by the compressor 1, and the heat is released into the room through the four-way reversing valve 4 to the user-side heat exchanger 3 , through the throttle valve 5, enters the fin-tube compound heat exchanger 2 to absorb the heat of the underground heat medium and then enters the compressor to enter the next cycle; the domestic hot water in the heat storage tank 11 enters the solar collector through the first circulation pump 13 Heater 11 returns to heat storage tank 11 through valve 15 after being heated.

4) Air source, ground energy combined heating and solar domestic hot water mode

The fan 2' is turned on, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 7, 14, 15, 16 are opened, and the valves 8, 9, 17 are closed; The fin-in-tube compound heat exchanger 2 provides the heat source for the heat pump and sends it back to the ground through the valve 16; the refrigerant is compressed by the compressor 1, and the heat is released into the room through the four-way reversing valve 4 to the user-side heat exchanger 3 , through the throttle valve 5, enters the fin-tube composite heat exchanger 2 to absorb the heat of air and underground heat medium, and then enters the compressor to enter the next cycle; the domestic hot water in the heat storage tank 11 enters through the first circulation pump 13 The solar heat collector 11 returns to the heat storage tank 11 through the valve 15 after being heated.

5) Combined heating mode of air source and solar heat medium

The fan 2' is turned on, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 8, 14, 15, 17 are turned on, and the valves 7, 9, 16 are turned off; The water pump 13 enters the solar heat collector 12 and is heated and sent back to the heat storage tank 11; the heat medium in the heat exchange coil 2 10 in the heat storage tank 11 absorbs the heat in the heat storage tank 11 and goes through the second cycle The water pump 6 is sent into the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and after releasing heat to the room through the four-way reversing valve 4 to the user-side heat exchanger 3, it is throttled. The valve 5 enters the fin-tube composite heat exchanger 2 to absorb the heat of air and solar heat medium, and then enters the compressor to enter the next cycle.

6) Combined heating mode of solar heat medium and ground energy

A. Parallel connection of solar heat medium and ground energy

The fan 2' is turned off, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 7, 8, 14, 15, 16, and 17 are turned on, and the valve 9 is turned off; The water pump 13 enters the solar heat collector 12, is heated and sent back to the heat storage tank 11; the heat medium in the heat exchange coil 10 in the heat storage tank 11 absorbs the heat in the heat storage tank 11 and then merges with the underground heat medium Afterwards, the valve 7 and the second circulating water pump 6 are sent to the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and then passes through the four-way reversing valve 4 to the user-side heat exchanger 3-way After the heat is released in the room, it enters the heat source side heat exchanger 2 through the throttle valve 5 to absorb the heat of solar heat medium and underground heat medium, and then enters the compressor to enter the next cycle.

B. Solar heat medium and ground energy connected in series

The fan 2' is turned off, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 8, 9, 14, 15, and 16 are turned on, and the valves 7 and 17 are turned off; the heat medium in the heat storage tank 11 passes through the first cycle The water pump 13 enters the solar heat collector 11 and is heated and sent back to the heat storage tank 11; The second circulating water pump 6 is sent to the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and the heat is released into the room through the four-way reversing valve 4 to the user-side heat exchanger 3 , enter the heat source side heat exchanger 2 through the throttle valve 5 to absorb the heat of solar heat medium and underground heat medium, and then enter the compressor to enter the next cycle.

7) Combined work of air source, ground energy, and solar heat medium

A. Parallel connection of solar heat medium and ground energy

The fan 2' is turned on, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 7, 8, 14, 15, 16, and 17 are turned on, and the valve 9 is turned off; The water pump 13 enters the solar heat collector 12, is heated and sent back to the heat storage tank 11; the heat medium in the heat exchange coil 10 in the heat storage tank 11 absorbs the heat in the heat storage tank 11 and then merges with the underground heat medium Afterwards, the valve 7 and the second circulating water pump 6 are sent to the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and then passes through the four-way reversing valve 4 to the user-side heat exchanger 3-way After the heat is released in the room, it enters the heat source side heat exchanger 2 through the throttle valve 5 to absorb the heat of air, solar heat medium and underground heat medium, and then enters the compressor to enter the next cycle.

B. Solar heat medium and ground energy connected in series

The fan 2' is turned on, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 8, 9, 14, 15, 16 are turned on, and the valves 7, 17 are turned off; The water pump 13 enters the solar heat collector 11 and is heated and sent back to the heat storage tank 11; The second circulating water pump 6 is sent to the fin-tube composite heat exchanger 2 to provide heat source for the heat pump; the refrigerant is compressed by the compressor 1, and the heat is released into the room through the four-way reversing valve 4 to the user-side heat exchanger 3 , enter the heat source side heat exchanger 2 through the throttle valve 5 to absorb the heat of air, solar heat medium and underground heat medium, and then enter the compressor to enter the next cycle.

(2) Refrigeration working mode.

1) Air source works alone and solar domestic hot water mode:

The fan 2' is turned on, the first circulating water pump 13 is turned on, the valves 14 and 15 are turned on, the second circulating water pump 6 is turned off, and the valves 7, 8, 9, 16, and 17 are turned off; the refrigerant is compressed by the compressor 1 and reversed through the four-way After the heat is released from the valve 4 to the fin-tube composite heat exchanger 2, it is throttled by the throttle valve 5 and then enters the user-side heat exchanger 3 to convect with the indoor air to release the cooling capacity, and then the refrigerant enters the compressor to continue the cycle work; The domestic hot water in the hot water storage tank 11 enters the solar heat collector 11 through the first circulating pump 13 , returns to the hot water storage tank 11 through the valve 15 after being heated.

2) Ground energy works alone and solar domestic hot water mode

The fan 2' is turned off, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, valves 7, 14, 15, 16 are opened, valves 8, 9, 17 are closed; the underground heat medium is sent through the valve 7, and the second circulating water pump 6 The finned-tube compound heat exchanger 2 provides heat source for the heat pump and is sent back to the ground through the valve 16; the refrigerant is compressed by the compressor 1 and released to the finned-tube compound heat exchanger 2 through the four-way reversing valve 4 After the heat is released, it enters the heat exchanger 3 on the user side after being throttled by the throttle valve 5 to convect with the indoor air to release the cooling capacity, and then the refrigerant enters the compressor to continue the cycle work; the domestic hot water in the hot water storage tank 11 passes through the first cycle The pump 13 enters the solar heat collector 11, returns to the heat storage tank 11 through the valve 15 after being heated.

3) Air source, ground energy combined heating and solar domestic hot water mode

The fan 2' is turned on, the first circulating water pump 13 is turned on, the second circulating water pump 6 is turned on, the valves 7, 14, 15, 16 are opened, and the valves 8, 9, 17 are closed; The finned-tube compound heat exchanger 2 provides heat source for the heat pump and is sent back to the ground through the valve 16; the refrigerant is compressed by the compressor 1 and released to the finned-tube compound heat exchanger 2 through the four-way reversing valve 4 After the heat is released, it enters the heat exchanger 3 on the user side after being throttled by the throttle valve 5 to convect with the indoor air to release the cooling capacity, and then the refrigerant enters the compressor to continue the cycle work; the domestic hot water in the hot water storage tank 11 passes through the first cycle The pump 13 enters the solar heat collector 11, returns to the heat storage tank 11 through the valve 15 after being heated.

Claims (5)

1. An air-solar-earth energy three-heat source composite heat pump device, characterized in that: the device includes a compressor (1), a fin-tube type three-media composite heat exchanger (2), and a user-side heat exchange device (3), four-way reversing valve (4), throttle valve (5), first circulating water pump (13), second circulating water pump (6), bypass valve (9), solar collector (12 ), the tank is provided with a heat storage tank (11) of a heat exchange coil (10); wherein one of the two water inlets of the heat storage tank (11) passes through a valve arranged between pipelines (15) is connected with the water outlet of the solar heat collector (12), and the other water inlet is respectively connected with the underground heat source water supply pipeline and the fin-casing type three-medium composite type through the bypass valve (9) and the valve (17). The outlet of the liquid heat source medium channel in the heat exchanger (2) is connected; one of the two water outlets of the heat storage tank (11) passes through the valve (14) arranged between the pipelines, the first circulating water pump (13 ) is connected to the water inlet of the solar heat collector (12), and the other water outlet is connected in parallel with the underground heat source water supply pipeline through the valve (8) and then through the second circulating water pump (6) and the fin-casing type three-medium composite type In the heat exchanger (2), one of the two media passages formed by the inner and outer sleeves—one end of the nozzle of the liquid heat source passage is connected; the other end of the liquid heat source passage is respectively connected through The valves (16) and (17) between the pipelines are connected with the water inlet of the heat exchanger in the underground heat source return pipe and the heat storage tank (11); the fin-tube type three-medium composite heat exchanger ( 2) The other medium in the two medium passages formed by the inner and outer sleeves - one end of the nozzle of the heat pump working medium passage passes through the four-way reversing valve (4), the compressor (1) and the user side. One port of the heat exchange tube in the heat exchanger (3) is connected, and the other end of the nozzle of the heat pump working medium channel is connected to the above-mentioned heat exchange tube in the user side heat exchanger (3) through the throttle valve (5). Another port: the air heat source medium channel is formed between the outer wall of the outer casing of the fin-tube type three-medium composite heat exchanger (2) and the fins. 2. The air-solar-ground energy three-heat source composite heat pump device according to claim 1, characterized in that: the water inlet connected to the heat storage cavity of the hot water storage tank (11) passes through the valve ( 15) It is connected with the water outlet of the solar heat collector (12), and the water outlet connected with the thermal storage chamber of the heat storage tank (11) passes through the valve (14) arranged between the pipelines, the first circulating water pump (13 ) is connected with the water inlet of the solar heat collector (12); the water inlet of the heat exchange coil (10) arranged in the heat storage tank (11) is connected with the underground heat source water supply pipeline through a bypass valve (9) , the water outlet of the heat exchange coil (10) is connected in parallel with the underground heat source water supply pipeline through the valve (8), and then passes through the second circulating water pump (6) and the fin-tube type three-medium compound heat exchanger (2) One end of the nozzle of the liquid heat source channel, one of the two medium channels formed by the inner and outer sleeves, is connected. 3. The composite heat pump device of air-solar-ground energy three heat sources according to claim 2, characterized in that: domestic hot water supply pipes and water replenishment pipes are provided on the hot water storage tank (11). 4. The air-solar-ground energy three-heat source compound heat pump device according to claim 2, characterized in that: the water outlet of the solar collector (12) is connected to the living room through the valve (20) arranged between the pipelines. The water inlet of hot water tank (18) is connected, and the water outlet of domestic hot water tank (18) is connected with the water inlet of solar heat collector (12) by valve (21); ) is provided with a domestic hot water supply nozzle and a water replenishment nozzle. 5. The air-solar-ground energy three-heat source compound heat pump device according to claim 1, characterized in that: the water inlet connected to the heat storage cavity of the hot water storage tank (11) is connected to the underground through a bypass valve (9) The heat source water supply pipeline is connected, and the water outlet connected to the heat storage chamber of the heat storage tank (11) is connected in parallel with the underground heat source water supply pipeline, and then passes through the second circulating water pump (6) to exchange heat with the fin-casing type three-medium composite type One of the two media passages formed by the inner and outer sleeves in the device (2)—one end of the nozzle of the liquid heat source passage is connected; the heat exchange coil (10) arranged in the heat storage tank (11) ) is connected to the water outlet of the solar collector (12) through the valve (15) arranged between the pipelines, and the water outlet of the heat exchange coil (10) is connected through the valve (14) arranged between the pipelines. ), the first circulating water pump (13) is connected with the water inlet of the solar heat collector (12); the water outlet of the solar heat collector (12) is connected with the domestic hot water The water inlet of the tank (18) is connected, and the water outlet of the domestic hot water tank (18) is connected with the water inlet of the solar collector (12) through a valve (21); A domestic hot water supply nozzle and a water replenishment nozzle are provided.

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