CN109974326B

CN109974326B - Evaporation cold solar energy and air heat source composite heat pump heat recovery unit

Info

Publication number: CN109974326B
Application number: CN201910181100.1A
Authority: CN
Inventors: 李国斌
Original assignee: Hanrun United High Tech Development Beijing Co ltd
Current assignee: Hanrun United High Tech Development Beijing Co ltd
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2023-08-01
Anticipated expiration: 2039-03-11
Also published as: CN109974326A

Abstract

The invention discloses an evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, which comprises a compressor, a first four-way valve, a second four-way valve, a third four-way valve, a gas-liquid separator, an outdoor side heat exchange part, a functional module, an indoor side heat exchanger, a multifunctional heat exchanger, a solar heat exchanger, a plurality of electromagnetic valves and a one-way valve, wherein the first four-way valve is connected with the first four-way valve; the positive displacement solar heat exchanger is additionally arranged in the evaporation cold-heat pump, so that a second heat source is provided for heating, and the purpose of energy conservation is achieved; the total energy adjustment is realized by adding a heat storage water tank; the multifunctional heat exchanger is additionally arranged, so that the total heat recovery of the air conditioner is realized, and the requirement of domestic hot water supply is met; the optimized pipeline design realizes more than ten working modes and three functions of refrigeration, heating and hot water; besides realizing the heat recovery function, the expandable multifunctional heat exchanger can also introduce a third cold source and a third heat source such as water, ground source, municipal sewage, industrial wastewater and the like to realize the refrigeration, heating, hot water and defrosting demands of the water source heat pump and the diversification of energy sources.

Description

Evaporation cold solar energy and air heat source composite heat pump heat recovery unit

Technical Field

The invention relates to the field of air conditioning equipment, in particular to an evaporative cooling solar energy and air heat source composite heat pump heat recovery unit which combines a solar energy technology and a heat recovery technology with an evaporative cooling and heating pump unit, solves the requirements on cooling, heating and hot water under different working conditions, and greatly improves the cooling efficiency/heating efficiency and comprehensive efficiency of the evaporative cooling and heating pump.

Background

At present, the air conditioner heat pump unit mainly comprises the following four types: (1) Air-cooled heat pump-air conditioner utilizing outdoor ambient air as cold and heat source; (2) Water (ground) source heat pump-air conditioner using underground water, sewage, river, lake or soil as cold and heat source; (3) Evaporative cold heat pump-air conditioner using water as cold source and air as heat source; (4) Solar heat pump-air conditioner with solar energy as heat source.

The evaporative cooling and heating pump unit improves the refrigerating efficiency of the heat pump, and solves the problem of low refrigerating efficiency of the heat pump compared with an air cooling heat pump under the refrigerating working condition, but the following defects still exist:

1. the problem of serious attenuation of the heating capacity of a unit taking air as a heat source under the low-temperature working condition, especially at the temperature of minus 35 ℃ or even lower, cannot be broken through, and the efficiency and the energy consumption are low.

2. The problem that the indoor environment temperature is reduced due to the adoption of refrigeration defrosting under the unable refrigeration working condition affects the comfort level is solved, and because the defrosting frequency of the air-cooled heat exchanger is high, the heating time of a unit is shortened, the defrosting time is long, and the defrosting needs to consume additional electric energy.

3. The frosting phenomenon caused by the evaporation of the air-cooled heat exchanger cannot be solved, the indoor temperature is reduced, the using effect is affected, and the unit efficiency is sacrificed due to the additional work of the defrosting compressor.

4. The condensing heat emission under the refrigerating working condition of the evaporating cooling unit causes energy waste and environmental heat pollution, and the phenomenon of urban heat island is increased.

Disclosure of Invention

The invention aims to solve the technical problem of providing an evaporative cold solar energy and air heat source composite heat pump heat recovery unit, which uses solar energy as a second heat source to supply heat energy to a heat pump, and realizes efficient heating on the premise of no defrosting; defrosting in a solar heating heat storage mode, so that indoor temperature fluctuation caused by refrigerating defrosting is reduced to the maximum extent; the condensation heat is recovered to achieve the secondary utilization of energy, so that the energy waste is effectively reduced; the third heating source is provided, and the using function of the unit is greatly expanded.

In order to solve the technical problems, the invention adopts the following technical scheme: an evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, comprising:

the compressor is an enhanced vapor injection compressor and is provided with a flow outlet, a return flow port and an EVI jet port;

the first four-way valve is provided with a, b, c, d interfaces, and the d interface is connected with an outflow port of the compressor;

The second four-way valve is provided with e, f, g, h interfaces, and the c interface of the first four-way valve is connected with the e interface of the second four-way valve;

the third four-way valve is provided with i, j, k, l interfaces, and the h interface of the second four-way valve is connected with the l interface of the third four-way valve; the g interface of the second four-way valve is respectively connected with the j interface of the third four-way valve and the b interface of the first four-way valve;

the gas-liquid separator is connected in parallel with the b interface of the first four-way valve, the g interface of the second four-way valve and the j interface of the third four-way valve and is connected with a reflux port of the compressor through the gas-liquid separator respectively;

the outdoor side heat exchange part is provided with a R, S interface, and an R interface of the outdoor side heat exchange part is connected with a k interface of the third four-way valve;

the functional module is provided with a U, V, P, Q interface, and an S interface of the outdoor side heat exchange part is connected with a U interface of the functional module through a first electromagnetic valve and a first one-way valve and is connected with a V interface of the functional module through the first electromagnetic valve and a third one-way valve; the S interface of the outdoor side heat exchange part is connected with the V interface of the functional module through a first electromagnetic valve, an eighth electromagnetic valve and a ninth electromagnetic valve and a fourth one-way valve; the Q interface of the functional module is connected with an EVI jet orifice of the compressor; the P interface of the functional module is connected with an EVI injection port of the compressor through a seventh electromagnetic valve and a thermal expansion valve;

The indoor side heat exchanger is provided with a M, N interface, the U interface of the functional module is connected with the N interface of the indoor side heat exchanger through a second one-way valve and a second electromagnetic valve, and the V interface of the functional module is connected with the N interface of the indoor side heat exchanger through a fourth one-way valve and a second electromagnetic valve; the M interface of the indoor side heat exchanger is connected with the f interface of the second four-way valve;

the multifunctional heat exchanger is provided with a O, T interface, a water inlet and a water outlet, and the T interface of the multifunctional heat exchanger is connected with the fourth electromagnetic valve through a fifth one-way valve or a sixth one-way valve, then is connected with the U interface of the functional module through a second one-way valve, or is connected with the V interface of the functional module through a fourth one-way valve; the T interface of the multifunctional heat exchanger is respectively connected with the first check valve and the third check valve after passing through the fifth check valve and the third electromagnetic valve; the O interface of the multifunctional heat exchanger is connected with the a interface of the first four-way valve;

the solar heat exchanger comprises a water supplementing port, a refrigerant coil, a water temperature sensor, a refrigerant inlet, a refrigerant outlet, an overflow port, a solar upper circulation port and a solar lower circulation port, wherein the solar upper circulation port is respectively connected with one end of a first water supplementing valve and one end of a solar heat collecting vacuum tube, and the solar lower circulation port is connected with the other end of the solar heat collecting vacuum tube through a solar circulation pump; the other end of the solar heat collection vacuum tube is connected with a water injection port of the heat storage water tank through a second water supplementing valve; the hot water lower circulation port of the heat storage water tank is connected with the water inlet of the multifunctional heat exchanger, and the water outlet of the multifunctional heat exchanger is connected with the hot water upper circulation port of the heat storage water tank; the refrigerant outlet of the solar heat exchanger is connected with an i interface of the third four-way valve; the refrigerant inlet of the solar heat exchanger is connected with the U interface of the functional module through a fifth electromagnetic valve, a ninth electromagnetic valve and a second one-way valve, and the refrigerant inlet of the solar heat exchanger is connected with the V interface of the functional module through the fifth electromagnetic valve, the ninth electromagnetic valve and a fourth one-way valve.

Furthermore, the heat storage water tank can be replaced by an external heat source, and the external heat source is a third cold and heat source such as water, ground source, municipal sewage, industrial wastewater and the like; one end of the external heat source is connected with the water inlet of the multifunctional heat exchanger, and the other end of the external heat source is connected with the water outlet of the multifunctional heat exchanger.

Further, the functional module comprises a liquid storage tank, a dry filter, a first electronic expansion valve, an economizer, a second electronic expansion valve and a sixth electromagnetic valve, and a U interface of the functional module is sequentially connected with the liquid storage tank, the dry filter, the economizer, the first electronic expansion valve and the V interface; the drying filter is sequentially connected with a sixth electromagnetic valve, a second electronic expansion valve, an economizer and a Q interface; the drying filter is also connected with a P interface; when the functional module is combined with the vapor injection enthalpy-increasing compressor, the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit can be used for high-efficiency refrigeration in a high-temperature high-humidity environment and high-efficiency heating in a low-temperature environment.

Further, the outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporation cooling heat exchanger, a sprayer, a spray pump, a water collecting tank, a first functional electromagnetic valve A and a second functional electromagnetic valve B; the spray pump is arranged in the water collecting tank; the fan enables air to flow through the surface of the air-cooled heat exchanger, and the sprayer sprays cooling water to the surface of the evaporative cold heat exchanger; the R interface of the outdoor side heat exchange part is sequentially connected with the inlet end of the evaporative cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger, the inlet end of the air cooling heat exchanger and the outlet end of the air cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger is also connected with the inlet end of the second functional electromagnetic valve B, the outlet end of the air cooling heat exchanger is also connected with the inlet end of the first functional electromagnetic valve A, and the outlet end of the second functional electromagnetic valve B and the outlet end of the first functional electromagnetic valve A are connected in parallel and then are connected with the S interface of the outdoor side heat exchange part.

Still further, the functional module may be replaced with a second functional module: the second functional module has a U, V interface; the second functional module comprises a liquid storage tank, a dry filter and a first electronic expansion valve, and the U-shaped interface is sequentially connected with the liquid storage tank, the dry filter, the first electronic expansion valve and the V-shaped interface. When the functional module is replaced by the second functional module, the compressor is a common compressor, the common compressor only has an outflow port and a backflow port, and the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit can only be used for refrigerating and heating in a non-cold environment (-10 ℃).

Furthermore, the indoor side heat exchanger can be replaced by a multi-connected indoor unit, and the multi-connected indoor unit comprises a refrigerant fin heat exchanger and an indoor side fan, wherein the indoor side fan enables air to flow through the surface of the refrigerant fin heat exchanger and is used for refrigerating and heating of the unit.

Further, the outdoor heat exchange part can be replaced by a second outdoor heat exchange part, and the second outdoor heat exchange part is provided with a R, S interface; the second outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporation cooling heat exchanger, a sprayer, a spray pump, a water collecting tank, a third functional electromagnetic valve C and a fourth functional electromagnetic valve D; the inlet end of the third functional electromagnetic valve C and the inlet end of the fourth functional electromagnetic valve D are connected in parallel and then are connected with the R interface of the second outdoor side heat exchange part, the outlet end of the third functional electromagnetic valve C is connected with the inlet end of the air cooling heat exchanger, the outlet end of the fourth functional electromagnetic valve D is connected with the inlet end of the evaporation cooling heat exchanger, and the outlet end of the air cooling heat exchanger and the outlet end of the evaporation cooling heat exchanger are connected in parallel and then are connected with the S interface of the second outdoor side heat exchange part.

Further, the outdoor side heat exchange part can be replaced by a third outdoor side heat exchange part, and the third outdoor side heat exchange part is provided with a R, S interface; the third outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporation cooling heat exchanger, a sprayer, a spray pump, a water collecting tank, a fifth functional electromagnetic valve E and a sixth functional electromagnetic valve F; the R interface of the third outdoor side heat exchange part is connected with the inlet end of the air-cooled heat exchanger, the outlet end of the air-cooled heat exchanger is connected with the inlet end of the evaporative cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger is connected with the inlet end of the sixth functional electromagnetic valve, the outlet end of the air-cooled heat exchanger is also connected with the inlet end of the fifth functional electromagnetic valve E, and the outlet end of the fifth functional electromagnetic valve E is connected with the S interface of the third outdoor side heat exchange part after being connected with the outlet end of the sixth functional electromagnetic valve in parallel.

The beneficial effects are that: the invention can realize the cooling of various cold sources; heating by various heat sources; a mode is preferentially selected, so that the unit has more than ten working states which can be in the highest efficiency; the multifunctional water heater integrates multiple functions and realizes multiple functions of cooling, heating and hot water. The concrete steps are as follows: the positive displacement solar heat exchanger is additionally arranged in the evaporation cold source heat pump, so that a second heat source can be provided for heating to achieve the purpose of energy conservation; the energy adjustment total use can be realized by additionally arranging the heat storage water tank; the multifunctional heat exchanger (cold-hot heat exchanger) is additionally arranged, so that the refrigeration/heat and total heat recovery of the air conditioner are realized, and the heating/domestic hot water supply requirements are met; the optimized pipeline design realizes more than ten working modes of unit evaporative cooling refrigeration, air cooling refrigeration, solar heat pump heating, air source heat pump heating, solar hot water, solar heat pump hot water, air energy hot water, total heat recovery refrigeration hot water, solar defrosting, refrigeration defrosting, hot water defrosting and the like through the connection design of all components, and realizes three functions of refrigeration, heating and hot water; besides realizing the heat recovery function, the expandable multifunctional heat exchanger can also introduce third cold and heat sources such as water, ground sources, municipal sewage, industrial wastewater and the like to realize the requirements of water source heat pump refrigeration, heating and hot water.

Drawings

FIG. 1 is a schematic diagram of a heat recovery unit of a heat pump combining evaporative cooling solar energy and an air heat source according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a first four-way valve 131 according to an embodiment of the present invention.

Fig. 3 is an enlarged schematic view of a second four-way valve 132 according to an embodiment of the present invention.

Fig. 4 is an enlarged schematic view of a third four-way valve 133 according to an embodiment of the present invention.

Fig. 5 is an enlarged schematic view of a compressor 1 according to a first embodiment of the present invention.

Fig. 6 is an enlarged schematic view of the multifunctional heat exchanger 3 included in the first embodiment of the present invention.

Fig. 7 is an enlarged schematic view of the outdoor heat exchange portion 4 according to the first embodiment of the present invention.

Fig. 8 is an enlarged schematic view of an indoor side heat exchanger 5 included in the first embodiment of the present invention.

Fig. 9 is an enlarged schematic view of a solar heat exchanger 6 included in the first embodiment of the present invention.

Fig. 10 is an enlarged schematic view of a thermal storage tank 15 according to a first embodiment of the present invention.

Fig. 11 is an enlarged schematic view of a functional module 10 according to an embodiment of the present invention.

Fig. 12 is a flow chart of an evaporative cooling refrigeration mode according to a first embodiment of the present invention.

Fig. 13 is a flow chart of an evaporative cooling and air cooling combined refrigeration mode according to a first embodiment of the present invention.

Fig. 14 is a flowchart of an air source heating mode according to the first embodiment of the present invention.

Fig. 15 is a flowchart of a solar heating mode according to a first embodiment of the present invention.

Fig. 16 is a flowchart of a solar heat storage and supply mode (external heat source heat supply mode) according to the first embodiment of the present invention.

FIG. 17 is a flow chart of an air source hot water mode according to a first embodiment of the invention.

Fig. 18 is a flowchart of a solar heat pump hot water mode according to the first embodiment of the present invention.

Fig. 19 is a flow chart of a cooling and heating mode for simultaneously supplying domestic hot water according to the first embodiment of the present invention.

Fig. 20 is a flow chart of a solar energy domestic hot water supply mode according to the first embodiment of the invention.

Fig. 21 is a flow chart of a refrigeration defrosting mode according to the first embodiment of the present invention.

Fig. 22 is a flowchart of a solar defrosting mode according to the first embodiment of the present invention.

Fig. 23 is a flowchart of a hot water defrosting mode (external heat source defrosting mode) according to the first embodiment of the present invention.

Fig. 24 is a schematic diagram of a second embodiment of the evaporation Leng Duo source heat pump unit according to the invention.

Fig. 25 is a schematic diagram of a third embodiment of the evaporation Leng Duo source heat pump unit according to the invention.

Fig. 26 is a schematic diagram of a fourth embodiment of a evaporation Leng Duo source heat pump assembly according to the invention.

Fig. 27 is a schematic diagram of a fifth embodiment of the evaporation Leng Duo source heat pump unit according to the invention.

Fig. 28 is a schematic diagram of a sixth structure of an embodiment of the evaporation Leng Duo source heat pump unit of the invention.

Fig. 29 is a partial enlarged view of the second functional module 10a included in the second embodiment and the fourth embodiment of the present invention.

Fig. 30 is a partial enlarged view of the multiple indoor unit 5a included in the third and fourth embodiments of the present invention.

Fig. 31 is a partial enlarged view of the second outdoor heat exchange portion 4a included in the fifth embodiment of the present invention.

Fig. 32 is a partially enlarged view of the third outdoor heat exchange portion 4b included in the sixth embodiment of the present invention.

Wherein: 1. a compressor; 11. a flow outlet; 12. a return port; 13. EVI injection port; 2. a gas-liquid separator; 131. a first four-way valve; 132. a second four-way valve; 133. a third four-way valve; 3. a multifunctional heat exchanger; 31. a water inlet; 32. a water outlet; 4. an outdoor heat exchange unit; 41. a blower; 42. an air-cooled heat exchanger; 43. a sprayer; 44. a spray pump; 45. a evaporative cooling heat exchanger; 46. a water collection tank; 4a, a second outdoor side heat exchange part; 4b, a third outdoor side heat exchange part; A. a first function solenoid valve; B. a second function solenoid valve; C. a third function solenoid valve; D. a fourth function solenoid valve; E. a fifth function solenoid valve; F. a sixth function solenoid valve; 5. an indoor side heat exchanger; 5a, indoor multi-connected units; 6. a solar heat exchanger; 61. a water supplementing port; 62. a refrigerant coil; 63. a water temperature sensor; 64. a refrigerant outlet; 65. a refrigerant inlet; 66. an overflow port; 67. a solar upper circulation port; 68. a solar lower circulation port; 7. a liquid storage tank; 8. drying the filter; 9. an economizer; 10. a functional module; 10a, a second functional module; 14. a thermal expansion valve; 101. a first electronic expansion valve; 102. a second electronic expansion valve; 111. a first electromagnetic valve; 112. a second electromagnetic valve; 113. a third electromagnetic valve; 114. a fourth electromagnetic valve; 115. a fifth electromagnetic valve; 116. a sixth electromagnetic valve; 117. a seventh electromagnetic valve; 118. an eighth electromagnetic valve; 119. a ninth electromagnetic valve; 120. a first one-way valve; 121. a second one-way valve; 122. a third one-way valve; 123. a fourth one-way valve; 124. a fifth check valve; 125. a sixth one-way valve; 126. a seventh one-way valve; 15. a thermal storage tank; 15a, a water injection port; 15b, a water outlet; 15c, a hot water up-circulation port; 15d, a hot water lower circulation port; 15e, overflow port; 151. a heat recovery pump; 16. a solar heat collecting vacuum tube; 161. a solar energy circulating pump; 162. a first water supplementing valve; 163. and a second water supplementing valve.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

Fig. 1-11 are schematic structural views and enlarged partial views of an embodiment of a heat recovery unit of an evaporative cooling solar energy and air heat source composite heat pump in the invention.

An evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, comprising:

the compressor 1 is an enhanced vapor injection compressor, and is provided with an outflow port 11, a backflow port 12 and an EVI jet port 13;

the first four-way valve 131, the first four-way valve 131 is provided with a, b, c, d four interfaces, and the d interface is connected with the outflow port 11 of the compressor 1;

the second four-way valve 132, the second four-way valve 132 has e, f, g, h interfaces, the c interface of the first four-way valve 131 is connected with the e interface of the second four-way valve 132;

the third four-way valve 133, the third four-way valve 133 has i, j, k, l interfaces, and the h interface of the second four-way valve 132 is connected with the l interface of the third four-way valve 133; the g interface of the second four-way valve 132 is respectively connected with the j interface of the third four-way valve 133 and the b interface of the first four-way valve 131;

the gas-liquid separator 2 is connected in parallel with the b interface of the first four-way valve 131, the g interface of the second four-way valve 132 and the j interface of the third four-way valve 133 and is respectively connected with a reflux port of the compressor 1 through the gas-liquid separator 2;

The outdoor side heat exchange part 4, the outdoor side heat exchange part 4 is provided with a R, S interface, and the R interface of the outdoor side heat exchange part 4 is connected with the k interface of the third four-way valve 133;

the functional module 10 is provided with a U, V, P, Q interface, the S interface of the outdoor side heat exchange part 4 is connected with the U interface of the functional module 10 through the first electromagnetic valve 111 and the first one-way valve 120, and is connected with the V interface of the functional module 10 through the first electromagnetic valve 111 and the third one-way valve 122; the S interface of the outdoor side heat exchange part 4 is connected with the V interface of the functional module 10 through a first electromagnetic valve 111, an eighth electromagnetic valve 118 and a ninth electromagnetic valve 119 and a fourth one-way valve 123; the Q interface of the functional module 10 is connected with the EVI injection port 13 of the compressor 1; the P interface of the functional module 10 is connected with the EVI injection port 13 of the compressor 1 through a seventh electromagnetic valve 117 and a thermal expansion valve 14;

the indoor side heat exchanger 5, the indoor side heat exchanger 5 is provided with a M, N interface, the U interface of the functional module 10 is connected with the N interface of the indoor side heat exchanger 5 through the second one-way valve 121 and the second electromagnetic valve 112, and the V interface of the functional module 10 is connected with the N interface of the indoor side heat exchanger 5 through the fourth one-way valve 123 and the second electromagnetic valve 112; the M interface of the indoor side heat exchanger 5 is connected with the f interface of the second four-way valve 132;

The multifunctional heat exchanger 3, the multifunctional heat exchanger 3 is provided with a O, T interface, a water inlet 31 and a water outlet 32, the T interface of the multifunctional heat exchanger 3 is connected with the fourth electromagnetic valve 114 through the fifth one-way valve 124 or the sixth one-way valve 125, then is connected with the U interface of the functional module 10 through the second one-way valve 121, and is connected with the V interface of the functional module 10 through the fourth one-way valve 123; the T interface of the multifunctional heat exchanger 3 is also respectively connected with the first check valve 120 and the third check valve 122 after passing through the sixth check valve 125 and the third electromagnetic valve 113; the O interface of the multifunctional heat exchanger 3 is connected with the a interface of the first four-way valve 131;

the solar heat exchanger 6, the solar heat exchanger 6 includes the water compensating port 61, coolant coil 62, water temperature sensor 63, coolant inlet 65, coolant outlet 64, overflow port 66, solar upper circulation port 67, solar lower circulation port 68, the solar upper circulation port 67 is connected with one end of the first water compensating electromagnetic valve 162 and solar heat collecting vacuum tube 16 respectively, the solar lower circulation port 68 is connected with another end of the solar heat collecting vacuum tube 16 through the solar circulation pump 161; the other end of the solar heat collection vacuum tube 16 is also connected with a water injection port 15a of the heat storage water tank 15 through a second water supplementing valve 163; the hot water lower circulation port 15d of the heat storage tank 15 is connected with the water inlet 31 of the multifunctional heat exchanger 3, and the water outlet 32 of the multifunctional heat exchanger 3 is connected with the hot water upper circulation port 15c of the heat storage tank 15; the refrigerant outlet 64 of the solar heat exchanger 6 is connected with the i interface of the third four-way valve 133; the refrigerant inlet 65 of the solar heat exchanger 6 is connected with the U interface of the functional module 10 through a fifth electromagnetic valve 115, a ninth electromagnetic valve 119 and a second one-way valve 121, and the refrigerant inlet 65 of the solar heat exchanger 6 is connected with the V interface of the functional module 10 through the fifth electromagnetic valve 115, the ninth electromagnetic valve 119 and a fourth one-way valve 123;

Further, the heat storage tank 15 may be replaced by an external heat source, and the external heat source is a third cold and heat source, such as water, ground source, municipal sewage, industrial wastewater, etc.; one end of the external heat source is connected with the water inlet 31 of the multifunctional heat exchanger 3, and the other end of the external heat source is connected with the water outlet 32 of the multifunctional heat exchanger 3.

Further, the functional module 10 includes a liquid storage tank 7, a dry filter 8, a first electronic expansion valve 101, an economizer 9, a second electronic expansion valve 102, and a sixth electromagnetic valve 116, and a U interface of the functional module 10 is sequentially connected with the liquid storage tank 7, the dry filter 8, the economizer 9, the first electronic expansion valve 101, and a V interface; the dry filter 8 is sequentially connected with a sixth electromagnetic valve 116, a second electronic expansion valve 102, an economizer 9 and a Q interface; the drying filter 8 is also connected with a P interface; when the functional module 10 is used in combination with an air injection enthalpy-increasing compressor, the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit can be used for refrigerating and heating in a low-temperature environment.

Further, the outdoor side heat exchange part 4 comprises a fan 41, an air cooling heat exchanger 42, an evaporative cooling heat exchanger 45, a sprayer 43, a spray pump 44, a water collection tank 46, a first functional electromagnetic valve A and a second functional electromagnetic valve B; the spray pump 44 is arranged in the water collection tank 46; the fan 41 causes air to flow through the surface of the air-cooled heat exchanger 42, and the sprayer 43 sprays cooling water to the surface of the evaporative cooling heat exchanger 45; the R interface of the outdoor side heat exchange part 4 is sequentially connected with an inlet end 451 of the evaporative cooling heat exchanger 45, an outlet end 452 of the evaporative cooling heat exchanger 45, an inlet end 421 of the air cooling heat exchanger 42 and an outlet end 422 of the air cooling heat exchanger 42, the outlet end 452 of the evaporative cooling heat exchanger 45 is also connected with an inlet end B1 of the second functional electromagnetic valve B, the outlet end 422 of the air cooling heat exchanger 42 is also connected with an inlet end A1 of the first functional electromagnetic valve A, and an outlet end B2 of the second functional electromagnetic valve B and an outlet end A2 of the first functional electromagnetic valve A are connected in parallel and then connected with the S interface of the outdoor side heat exchange part 4.

The evaporation Leng Duo source heat pump unit of the first embodiment has the following working modes:

evaporative cooling refrigeration mode

As shown in fig. 12, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the e-h end and the f-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned on, the blower 41 is started, and the sprayer 43 is in a spraying state. The second functional solenoid valve B is opened and the first functional solenoid valve a is closed. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, such as when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In the refrigerant loop, the second functional electromagnetic valve B, the first electromagnetic valve 111, the second electromagnetic valve 112 and the sixth electromagnetic valve 116 are opened; the first functional solenoid valve a, the third solenoid valve 113, the fourth solenoid valve 114, the fifth solenoid valve 115, the eighth solenoid valve 118, and the ninth solenoid valve 119 are closed.

The liquid spraying enthalpy increasing compressor 1 is electrified to work, after the high-temperature high-pressure gaseous refrigerant is sprayed from the outlet 11 of the compressor 1 and enters d end inlet and c end outlet of the first four-way valve 131, the high-temperature high-pressure gaseous refrigerant enters e end inlet and h end outlet of the second four-way valve 132 and enters l end inlet and k end outlet of the third four-way valve 133, and after entering the evaporative cooling heat exchanger 45, the high-temperature high-pressure gaseous refrigerant enters the liquid storage tank 7 and the dry filter 8 through the second functional electromagnetic valve B, the first electromagnetic valve 111 and the first one-way valve 120 and is divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the refrigerant is cooled to be low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, the refrigerant is discharged through the fourth one-way valve 123 and enters the indoor side heat exchanger 5 through the second electromagnetic valve 112, the liquid refrigerant exchanges heat with indoor lower-temperature circulating water flowing through the indoor side heat exchanger 5, the refrigerant is vaporized and heated to absorb heat, and the indoor circulating water at the lower temperature is cooled to obtain chilled water, so that the refrigerating purpose is achieved. The vaporized refrigerant passes through the f end and the g end of the second four-way valve 132, passes through the gas-liquid separator 2 and then returns to the return port 12 of the compressor 1, and the main circulation of the refrigerant is ended to enter the next circulation.

(2) Auxiliary EVI circuit: through a sixth electromagnetic valve 116, the second electronic expansion valve 102 is throttled and depressurized, and then is subjected to heat exchange with the refrigerant on one side of the main loop through the other side of the economizer 9 to be primarily vaporized and heated, and then is changed into medium-temperature medium-pressure steam, and the medium-temperature medium-pressure steam returns to the EVI jet orifice 13 of the compressor to enter the compressor 1 to complete one cycle.

When the temperature of the compressor 1 is higher, in order to prevent the compressor 1 from being broken down by high temperature, the seventh electromagnetic valve 117 is opened, the sixth electromagnetic valve 116 is closed, the secondary vaporization amount of the refrigerant entering the economizer 9 is reduced, the refrigerant is throttled and depressurized by the seventh electromagnetic valve 117 and the thermal expansion valve and then returns to the EVI injection port 13 of the compressor, the secondary refrigerant reflux amount is increased, and therefore the temperature of the compressor 1 is reduced, and the compressor is prevented from being burnt.

(II) evaporative cooling and air cooling combined refrigeration mode

As shown in fig. 13, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the e-h end and the f-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned on, the blower 41 is started, and the sprayer 43 is in a spraying state. The second functional solenoid valve B is closed and the first functional solenoid valve a is opened. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, such as when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In the refrigerant loop, the first functional electromagnetic valve A, the first electromagnetic valve 111, the second electromagnetic valve 112 and the sixth electromagnetic valve 116 are opened; the second functional solenoid valve B, the third solenoid valve 113, the eighth solenoid valve 118, the fourth solenoid valve 114, the fifth solenoid valve 115, and the ninth solenoid valve 119 are closed.

The liquid spraying enthalpy-increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is sprayed from the outlet 11 of the compressor 1, enters the end of the first four-way valve 131d, enters the end of the second four-way valve 132 e, enters the end of the third four-way valve 133 h, enters the end of the third four-way valve 133 l, enters the evaporation heat exchanger 45 and the air cooling heat exchanger 42, enters the liquid storage tank 7 and the drying filter 8 through the first functional electromagnetic valve A, the first electromagnetic valve 111 and the first one-way valve 120, and is divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the liquid refrigerant is cooled to be low-temperature low-pressure refrigerant through the first electronic expansion valve 101 and then is discharged through the fourth one-way valve 123, the liquid refrigerant enters the indoor side heat exchanger 5 through the second electromagnetic valve 112, the liquid refrigerant exchanges heat with indoor lower-temperature circulating water flowing through the indoor side heat exchanger 5, the refrigerant is vaporized and heated to absorb heat, and the indoor circulating water at the lower temperature is cooled to obtain chilled water, so that the refrigerating purpose is achieved. The vaporized refrigerant passes through the f end and the g end of the second four-way valve 132, passes through the gas-liquid separator 2 and then returns to the return port 12 of the compressor 1, and the main circulation of the refrigerant is ended to enter the next circulation.

(2) Auxiliary EVI circuit: through a sixth electromagnetic valve 116, the second electronic expansion valve 102 is throttled and depressurized, and then is subjected to heat exchange with the refrigerant on one side of the main loop through the other side of the economizer 9 to be primarily vaporized and heated, and then is changed into medium-temperature medium-pressure steam, and the medium-temperature medium-pressure steam returns to the EVI jet orifice 13 of the compressor and enters the compressor to complete one cycle.

When the temperature of the compressor 1 is higher, in order to prevent the high temperature breakdown of the compressor, the seventh electromagnetic valve 117 is opened, the sixth electromagnetic valve 116 is closed, the secondary vaporization amount of the refrigerant entering the economizer 9 is reduced, and the secondary refrigerant reflux amount is increased, so that the temperature of the compressor is reduced to prevent the burning loss of the compressor.

(III) air source heating and heating mode

As shown in fig. 14, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the ends h-g of the second four-way valve 132e-f are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is started, the sprayer 43 is in a closed state, the second function electromagnetic valve B is closed, the first function electromagnetic valve A is opened, and the evaporative cooling heat exchanger 45 acts as an evaporator. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the second solenoid valve 112, the sixth solenoid valve 116, and the first solenoid valve 111 are opened, and the fourth solenoid valve 114, the fifth solenoid valve 115, the eighth solenoid valve 118, the third solenoid valve 113, and the ninth solenoid valve 119 are closed.

The liquid injection enthalpy-increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1 to enter d end in and c end out of the first four-way valve 131, enter e end in and f end out of the second four-way valve 132, and then enter the indoor side heat exchanger 5: the spray pump 44 is turned off, the fan 41 is started, the spray 43 stops spraying, the second function electromagnetic valve B is turned off, the first function electromagnetic valve A is turned on, and the evaporative cooling heat exchanger 45 acts as an evaporator. The refrigerant steam exchanges heat with the secondary refrigerating medium (water) flowing through the indoor side heat exchanger 5, the heated hot water is transported into the indoor fan coil under the action of the refrigerating pump, the indoor air exchanges heat under the action of the fan, and the secondary refrigerating medium (water) heats the indoor air to achieve the air conditioning heat. The refrigerant cooled in the indoor heat exchanger 5 is liquefied, and at this time, the high-temperature and high-pressure refrigerant vapor is changed into a high-temperature and high-pressure liquid refrigerant, and the liquid refrigerant sequentially passes through the second electromagnetic valve 112, the second one-way valve 121, the liquid storage tank 7 and the dry filter 8 and is divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the low-temperature low-pressure refrigerant liquid refrigerant is reduced to pass through the first electronic expansion valve 101, passes through the third one-way valve 122 and the first electromagnetic valve 111, then sequentially enters the air cooling heat exchanger 42 and the evaporative cooling heat exchanger 45, the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42 jointly act on the evaporative cooling heat exchanger 45 under the forced convection action of the fan 41, the low-temperature low-pressure liquid refrigerant is gasified and absorbed by heat, and is changed into low-temperature low-pressure refrigerant steam, and the low-temperature low-pressure refrigerant steam enters through the k end and the l end of the third four-way valve 133, enters through the h end and the g end of the second four-way valve 132, returns to the return port 12 of the compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant enters into the next circulation.

(2) Auxiliary EVI circuit: after being throttled and depressurized by the sixth electromagnetic valve 116 and the second electronic expansion valve 102, the refrigerant is vaporized and warmed by heat exchange between one side of the economizer 9 and one side of the main loop, and then is changed into medium-temperature medium-pressure steam, and the medium-temperature medium-pressure steam returns to the EVI jet orifice 13 of the compressor 1 and enters the compressor to complete one cycle.

When the temperature of the compressor 1 is higher, in order to prevent the high-temperature breakdown of the compressor, the seventh electromagnetic valve 117 is opened, the sixth electromagnetic valve 116 is closed, the secondary vaporization amount of the refrigerant entering the economizer 9 is reduced, and the secondary refrigerant reflux amount is increased, so that the temperature of the compressor is reduced.

The solar heat collection circulation is circularly heated according to a temperature difference method. When the solar heat supply or the solar heat storage heat supply is finished, the mode heat supply is started.

(IV) solar heating mode

As shown in fig. 15, this mode is started when the solar heat exchanger temperature reaches the set temperature during the daytime when the sun is sufficiently shining. The a-b end and the c-d end of the first four-way valve 131 are communicated in the mode; the e-f end and the h-g end of the second four-way valve 132 are communicated; the l-i end and the j-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is turned off, the sprayer 43 is in a closed state, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve a is turned off. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the second solenoid valve 112, the sixth solenoid valve 116, the eighth solenoid valve 118, and the fifth solenoid valve 115 are opened, and the fourth solenoid valve 114, the ninth solenoid valve 119, the first solenoid valve 111, and the third solenoid valve 113 are closed.

The steam injection culvert increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1 to enter the d end inlet and the c end outlet of the first four-way valve 131, enter the e end inlet and the f end outlet of the second four-way valve 132 and then enter the indoor side heat exchanger 5; the spray pump 44 is turned off, the fan 41 is turned off, the sprayer 43 stops spraying, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve A is turned off. The refrigerant steam exchanges heat with the secondary refrigerant (water or antifreeze) in the indoor side heat exchanger 5, the warmed secondary refrigerant (water or antifreeze) conveys hot water into the indoor fan coil under the action of the freeze pump, and the indoor air exchanges heat with the secondary refrigerant under the action of the fan to heat the indoor air to achieve the air conditioning and heating purpose. The refrigerant cooled in the indoor heat exchanger 5 is liquefied, and at this time, the high-temperature and high-pressure refrigerant vapor is changed into a high-temperature and high-pressure liquid refrigerant, and the liquid refrigerant sequentially passes through the second electromagnetic valve 112, the second one-way valve 121, the liquid storage tank 7 and the dry filter 8 and is divided into two paths:

(1) Main loop: after the economizer 9 exchanges heat with the refrigerant at the other side of the economizer in the secondary loop and is further condensed and cooled, the refrigerant is cooled to be low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, the low-temperature low-pressure refrigerant liquid refrigerant enters the solar heat exchanger 6 through the third one-way valve 122, the eighth electromagnetic valve 118 and the fifth electromagnetic valve 115, the low-temperature low-pressure liquid refrigerant is vaporized and evaporated to absorb heat in the sun, the low-temperature low-pressure liquid refrigerant is changed into low-temperature low-pressure refrigerant steam, the low-temperature low-pressure refrigerant steam sequentially passes through the i end inlet and the l end outlet of the third four-way valve 133, the h end inlet and the g end outlet of the second four-way valve 132, and the refrigerant main cycle is ended to enter the next cycle through the return port 12 of the compressor 1 after passing through the gas-liquid separator 2.

The solar heat collection circulation circulates according to a temperature difference method, and a mode is set.

(V) solar heat accumulation and supply mode (external heat source heat supply mode)

As shown in fig. 16, the two modes are respectively started when the solar heat exchanger has high temperature or has sufficient external heat source when the sunlight is sufficient. The a-b end and the c-d end of the first four-way valve 131 are communicated; the e-f end and the h-g end of the second four-way valve 132 are communicated; the l-i end and the j-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is turned off, the sprayer 43 is in a closed state, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve a is turned off. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the second solenoid valve 112, the sixth solenoid valve 116, and the third solenoid valve 113 are opened, and the fourth solenoid valve 114, the ninth solenoid valve 119, the first solenoid valve 111, the fifth solenoid valve 115, and the eighth solenoid valve 118 are closed.

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the refrigerant is cooled to a low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, and the low-temperature low-pressure refrigerant liquid refrigerant enters the multifunctional heat exchanger 3 through the third one-way valve 122, the third electromagnetic valve 113 and the fifth one-way valve 124, and the low-temperature low-pressure liquid refrigerant exchanges heat with circulating water with higher temperature flowing in from the water inlet 31, absorbs the heat in the sun or the heat of an external heat source stored in the heat storage water tank 15 for vaporization and evaporation, and the circulating water with higher temperature is conveyed back to the heat storage water tank 15 or the external heat source from the water outlet 32 under the action of the heat recovery pump 151 after being cooled; at this time, the low-temperature low-pressure liquid refrigerant is changed into low-temperature low-pressure refrigerant vapor, sequentially passes through the end a and the end b of the first four-way valve 131, passes through the gas-liquid separator 2 and then returns to the return port 12 of the compressor 1, and the main cycle of the refrigerant is ended to enter the next cycle.

(2) Auxiliary EVI circuit: the refrigerant is throttled and depressurized through the sixth electromagnetic valve 116 and the second electronic expansion valve 102, is vaporized and warmed through heat exchange between one side of the economizer 9 and the refrigerant on one side of the main loop, is changed into medium-temperature medium-pressure steam, returns to the EVI jet orifice 13 of the compressor, and enters the compressor to complete one cycle.

Sixth air source hot water mode

As shown in fig. 17, the a-d end and the c-b end of the first four-way valve 131 are communicated in this mode; the e-f end and the h-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is turned on, the sprayer 43 is in a closed state, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve a is turned on. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the fourth solenoid valve 114, the sixth solenoid valve 116, and the first solenoid valve 111 are opened, and the second solenoid valve 112, the third solenoid valve 113, the fifth solenoid valve 115, the eighth solenoid valve 118, and the ninth solenoid valve 119 are closed.

The vapor injection enthalpy-increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1 to enter the d end and the a end of the first four-way valve 131 and then enter the multifunctional heat exchanger 3; the spray pump 44 is closed, the fan 41 is started, the sprayer 43 stops spraying, the second functional electromagnetic valve B is closed, and the first functional electromagnetic valve A is opened; the high-temperature high-pressure steam refrigerant and the circulating water with lower temperature are condensed, cooled and liquefied after being subjected to heat exchange in the multifunctional heat exchanger 3, at the moment, the high-temperature high-pressure refrigerant steam is changed into high-temperature high-pressure liquid refrigerant, and the high-temperature high-pressure liquid refrigerant sequentially passes through the sixth one-way valve 125, the fourth electromagnetic valve 114 and the second one-way valve 121 to enter the liquid storage tank 7 and the drying filter 8 and is divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the low-temperature low-pressure refrigerant liquid refrigerant is reduced to low-temperature low-pressure refrigerant vapor through the first electronic expansion valve 101, sequentially enters the air cooling heat exchanger 42 and the evaporative cooling heat exchanger 45 through the third one-way valve 122 and the first electromagnetic valve 111, absorbs heat in outdoor air under the forced action of the fan 41, is vaporized and evaporated to raise temperature, the first functional electromagnetic valve A is opened, the second functional electromagnetic valve B is closed, the evaporative cooling heat exchanger plays the role of an evaporator, the low-temperature low-pressure liquid refrigerant is changed into low-temperature low-pressure refrigerant vapor under the combined action of the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42, the low-temperature low-pressure refrigerant vapor enters through the k end and the l end of the third four-way valve 133, enters through the h end and the g end of the second four-way valve 132, returns to the return port 12 of the compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant is finished to enter the next circulation.

When the temperature of the compressor 1 is higher, in order to prevent the compressor from high-temperature breakdown, the seventh electromagnetic valve 117 is opened, the sixth electromagnetic valve 116 is closed, the secondary vaporization amount of the refrigerant entering the economizer 9 is reduced, and the secondary refrigerant reflux amount is increased, so that the temperature of the compressor is reduced.

The mode is that the solar water heating mode is started after the cooling and heat recovery mode in summer, and the mode is started when the temperature of the heat storage water tank still does not reach a set value (55 ℃) after the solar water heating mode is finished. The solar heat collection circulation circulates according to a temperature difference method.

(seventh) solar heat pump Hot Water mode

As shown in fig. 18, the a-d end and the c-b end of the first four-way valve 131 are communicated in this mode; the e-f end and the h-g end of the second four-way valve 132 are communicated; the l-i end and the j-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is turned off, the sprayer 43 is in a closed state, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve a is turned off. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each circuit of the refrigerant, the third solenoid valve 113, the fifth solenoid valve 115, the sixth solenoid valve 116, and the ninth solenoid valve 119 are opened, and the first solenoid valve 111, the second solenoid valve 112, the fourth solenoid valve 114, and the eighth solenoid valve 118 are closed.

The gas injection culvert increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1 to enter the d end inlet and the a end outlet of the first four-way valve 131 and then enter the multifunctional heat exchanger 3; the spray pump 44 is closed, the fan 41 is stopped, the spray 43 stops spraying, the second functional electromagnetic valve B is closed, the first functional electromagnetic valve A is closed, the high-temperature and high-pressure steam refrigerant and the circulating water with lower temperature flowing in from the water inlet 31 are condensed, cooled and liquefied after being subjected to heat exchange in the multifunctional heat exchanger 3, the circulating water with lower temperature flows out of the multifunctional heat exchanger 3 from the water outlet 32 after being heated, the purpose of recovering heat is achieved, at the moment, the high-temperature and high-pressure refrigerant steam is changed into high-temperature and high-pressure liquid refrigerant to flow out of the multifunctional heat exchanger 3, and the high-temperature and high-pressure refrigerant steam sequentially passes through the sixth one-way valve 125, the third electromagnetic valve 113 and the first one-way valve 120 and then enters the liquid storage tank 7 and the drying filter 8 to be divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the refrigerant is reduced to low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, the low-temperature low-pressure refrigerant liquid refrigerant enters the solar heat exchanger 6 to absorb solar heat and evaporate through the fourth one-way valve 123, the ninth electromagnetic valve 119 and the fifth electromagnetic valve 115, the low-temperature low-pressure refrigerant liquid refrigerant is changed into low-temperature low-pressure refrigerant steam, the low-temperature low-pressure refrigerant steam enters the h end inlet and the g end outlet of the second four-way valve 132 through the i end inlet and the l end outlet of the third four-way valve 133, and returns to the return port 12 of the compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant is ended to enter the next circulation.

(2) Auxiliary EVI circuit: the vapor is throttled and depressurized by the electromagnetic valve 115 and the electronic expansion valve 102, is vaporized and warmed by heat exchange between one side of the economizer 9 and the refrigerant on one side of the main loop, is changed into medium-temperature medium-pressure vapor, returns to the EVI injection port 13 of the compressor 1, and enters the compressor to complete one cycle.

The mode is a mode in which the cooling heat recovery mode is ended, and when the temperature of the heat storage tank 15 is lower than a set value (for example, 55 ℃), the mode is started preferentially.

Eighth mode for simultaneously refrigerating and supplying domestic hot water

The a-d end and the c-b end of the first four-way valve 131 are communicated in the mode; the e-f end and the h-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the fan 41 is stopped to be started, and the sprayer 43 is in a stopped spraying state. The second functional solenoid valve B is closed and the first functional solenoid valve a is closed. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each circuit of the refrigerant, the third solenoid valve 113, the sixth solenoid valve 116, and the second solenoid valve 112 are opened, and the first solenoid valve 111, the fourth solenoid valve 114, the fifth solenoid valve 115, the ninth solenoid valve 119, and the eighth solenoid valve 118 are closed.

The gas injection culvert increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1 to enter the d end inlet and the a end outlet of the first four-way valve 131 and then enter the multifunctional heat exchanger 3; the spray pump 44 is turned off, the fan 41 is stopped, the sprayer 43 stops spraying, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve A is turned off. The high-temperature high-pressure steam refrigerant and the circulating water with lower temperature are condensed, cooled and liquefied after heat exchange in the multifunctional heat exchanger 3, the circulating water with lower temperature absorbs the heat of the refrigerant and then rises in temperature to flow out of the multifunctional heat exchanger 3, the heat recovery purpose is achieved, at the moment, the high-temperature high-pressure steam refrigerant is changed into a high-temperature high-pressure liquid refrigerant, and the high-temperature high-pressure liquid refrigerant sequentially passes through the sixth one-way valve 125, the third electromagnetic valve 113 and the first one-way valve 120 and then enters the liquid storage tank 7 and the drying filter 8 to be divided into two paths:

(1) Main loop: the refrigerant is cooled down by the heat exchange of the refrigerant at the other side of the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop through the first electronic expansion valve 101 to be cooled down into low-temperature low-pressure refrigerant liquid refrigerant, the low-temperature low-pressure refrigerant enters the indoor side heat exchanger 5 after being discharged through the fourth one-way valve 123 and the second electromagnetic valve 112, chilled water is prepared by heat exchange of the low-temperature low-pressure liquid refrigerant and indoor higher-temperature water flowing through the other side of the indoor side heat exchanger 5, the chilled water is conveyed into the indoor by a refrigerating pump to achieve the purpose of refrigeration, the low-temperature refrigerant is vaporized, evaporated and absorbed and then becomes higher-temperature refrigerant steam, the higher-temperature refrigerant steam enters through the f end and the e end of the second four-way valve 132, the c end enters and the b end of the first four-way valve 131, the return port 12 of the return compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant is finished and the next circulation.

(2) Auxiliary EVI circuit: the refrigerant is throttled and depressurized through the sixth electromagnetic valve 116 and the second electronic expansion valve 102, is vaporized and warmed through heat exchange between one side of the economizer 9 and the refrigerant on one side of the main loop, is changed into medium-temperature medium-pressure steam, returns to the EVI jet orifice 13 of the compressor 1, and enters the compressor to complete one cycle.

The mode is started under refrigeration working condition, and the mode is switched into other modes until the heat storage water tank reaches the set temperature (45 ℃).

(nine) solar energy domestic hot water supply mode

In this mode, the refrigerant circuit is completely closed.

As shown in fig. 20, when the temperature of the circulating water in the water tank of the solar heat exchanger 6 is lower than the temperature of the solar heat collecting vacuum pipe 16 by 5 ℃, the solar circulation pump 161 starts circulation heating. When the solar heat exchanger 6 reaches a set temperature, for example, 60 ℃, the first water supplementing solenoid valve 162 and the second water supplementing solenoid valve 163 are simultaneously opened, and hot water flows into the heat storage tank 15 through the water filling port 15a until the water level of the heat storage tank 15 reaches a set height. When the water drain 15 is opened, water is supplied to the equipment requiring domestic hot water. When the temperature of the solar heat exchanger 6 is lower than 45 ℃, the first water supplementing solenoid valve 162 and the second water supplementing valve 163 are simultaneously closed, and the supply of water to the heat storage water tank 15 is stopped.

(ten) refrigeration defrosting mode

As shown in fig. 21, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the e-h end and the f-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 and the fan 41 are turned off, and the sprayer 43 is in a stopped spraying state. The second functional solenoid valve B is closed and the first functional solenoid valve a is opened. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, such as when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

The liquid spraying enthalpy-increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is sprayed from the outflow port 11 of the compressor 1, enters d end inlet and c end outlet of the first four-way valve 131, enters e end inlet and h end outlet of the second four-way valve 132, enters l end inlet and k end outlet of the third four-way valve 133, enters the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42, enters the liquid storage tank 7 and the drying filter 8 through the first functional electromagnetic valve A, the first electromagnetic valve 111 and the first one-way valve 120, and is divided into two paths:

(1) Main loop: after the economizer 9 exchanges heat with the refrigerant at the other side of the economizer in the secondary loop and is further condensed and cooled, the refrigerant is cooled to be low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, and then enters the indoor side heat exchanger 5 through the second electromagnetic valve 112 after being discharged through the fourth one-way valve 123, the liquid refrigerant exchanges heat with the indoor circulating water with lower temperature flowing through the indoor side heat exchanger 5, the refrigerant is vaporized and warmed to absorb indoor heat, and the indoor circulating water with higher temperature is cooled to provide a heat source for the compressor so as to achieve the defrosting purpose. The vaporized refrigerant passes through the f end and the g end of the second four-way valve 132, passes through the gas-liquid separator 2 and then returns to the return port 12 of the compressor 1, and the main circulation of the refrigerant is ended to enter the next circulation.

(2) Auxiliary EVI circuit: through a sixth electromagnetic valve 116, the second electronic expansion valve 102 is throttled and depressurized, and then is subjected to heat exchange with the refrigerant on one side of the main loop through the other side of the economizer 9 to be primarily vaporized and heated, and then is changed into medium-temperature medium-pressure steam, and the medium-temperature medium-pressure steam returns to the EVI injection port 13 of the compressor 1 and enters the compressor to complete one cycle.

This mode is the emergency defrost mode: this mode is started when the hot water defrosting mode, the solar defrosting mode ends or the condition is not satisfied. The using frequency of the mode is reduced to the greatest extent, and the influence on the indoor temperature caused by defrosting is avoided.

(eleven) solar defrosting mode

As shown in fig. 22, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the e-h end and the f-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the blower 41 is turned off, and the sprayer 43 is in a stopped spraying state. The second functional solenoid valve B is closed and the first functional solenoid valve a is opened. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the first solenoid valve 111, the sixth solenoid valve 116, the ninth solenoid valve 119, and the fifth solenoid valve 115 are opened, and the second solenoid valve 112, the third solenoid valve 113, the fourth solenoid valve 114, and the eighth solenoid valve 118 are closed.

The steam injection culvert increasing compressor 1 is electrified to work, high-temperature high-pressure gaseous refrigerant is injected from the outflow port 11 of the compressor 1, enters the d end inlet and the c end outlet of the first four-way valve 131, then enters the e end inlet and the h end outlet of the second four-way valve 132, enters the l end inlet and the k end outlet of the third four-way valve 133, and enters the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42; the spray pump 44 is turned off, the fan 41 is stopped to start, the sprayer 43 is stopped to spray, the second function electromagnetic valve B is turned off, and the first function electromagnetic valve A is turned on. The high-temperature high-pressure refrigerant steam enters the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42 to absorb surface heat so as to achieve the defrosting purpose. At this time, the high-temperature and high-pressure refrigerant vapor is changed into a high-temperature and high-pressure liquid refrigerant, and then sequentially passes through the first electromagnetic valve 111, the first one-way valve 120, the liquid storage tank 7 and the dry filter 8, and is divided into two paths:

(1) Main loop: after the heat exchange between the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop is further condensed and cooled, the refrigerant is reduced to low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, and the low-temperature low-pressure refrigerant liquid refrigerant enters the solar heat exchanger 6 after being discharged through the fourth one-way valve 123, the ninth electromagnetic valve 119 and the fifth electromagnetic valve 115, and the refrigerant absorbs the solar heat and is vaporized, evaporated and absorbed in the solar heat and vaporized and heated to low-temperature low-pressure refrigerant steam, and the low-temperature low-pressure refrigerant steam is fed into and discharged from the i end and the j end of the third four-way valve 133, returns to the return port 12 of the compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant is ended and enters the next circulation.

This mode is the second prioritized defrost mode: the water temperature sensor 63 arranged in the solar heat exchanger 6 in the defrosting mode starts the mode when sensing that the water temperature in the water tank is higher than a certain set value (such as 15 ℃), and is converted into the refrigerating defrosting mode when the water temperature is lower than a certain set value (such as 5 ℃).

(twelve) Hot Water defrosting mode (external Heat source defrosting mode)

As shown in fig. 23, the a-b ends and the c-d ends of the first four-way valve 131 are communicated in this mode; the e-h end and the f-g end of the second four-way valve 132 are communicated; the j-i end and the l-k end of the third four-way valve 133 are communicated. The spray pump 44 is turned off, the blower 41 is turned off, and the sprayer 43 is in a stopped spraying state. The second functional solenoid valve B is closed and the first functional solenoid valve a is opened. The compressor 1 is in operation. The seventh solenoid valve 117 is opened or closed at a set temperature, and is opened when the compressor temperature is higher than a certain set value (e.g., 95 ℃).

In each refrigerant circuit, the first solenoid valve 111, the fourth solenoid valve 114, and the sixth solenoid valve 116 are opened, and the second solenoid valve 112, the third solenoid valve 113, the fifth solenoid valve 115, the eighth solenoid valve 118, and the ninth solenoid valve 119 are closed.

The steam injection culvert increasing compressor 1 is electrified to work, and high-temperature high-pressure gaseous refrigerant is injected from the outlet 11 of the compressor 1, enters the d end inlet and the c end outlet of the first four-way valve 131, enters the e end inlet and the h end outlet of the second four-way valve 132, enters the evaporation cold heat exchanger 45 and the air-cooled heat exchanger 42 through the l end inlet and the k end outlet of the third four-way valve 133; the spray pump 44 is closed, the fan 41 is stopped to start, the spray 43 is stopped to spray, the second function electromagnetic valve B is closed, the first function electromagnetic valve A is opened, and the high-temperature and high-pressure refrigerant steam enters the evaporative cooling heat exchanger 45 and the air cooling heat exchanger 42 to absorb surface heat so as to achieve the defrosting purpose. At this time, the high-temperature and high-pressure refrigerant vapor is changed into a high-temperature and high-pressure liquid refrigerant, and then sequentially passes through the first electromagnetic valve 111, the first one-way valve 120, the liquid storage tank 7 and the dry filter 8, and is divided into two paths:

(1) Main loop: the refrigerant is cooled down by the heat exchange of the economizer 9 and the refrigerant at the other side of the economizer in the secondary loop, is cooled down to low-temperature low-pressure refrigerant liquid refrigerant through the first electronic expansion valve 101, is discharged through the fourth one-way valve 123, the fourth electromagnetic valve 114 and the fifth one-way valve 124, enters the multifunctional heat exchanger 3, the low-temperature low-pressure refrigerant liquid exchanges heat with the heat storage water tank 15 or the hot water flowing in from the external heat source through the water inlet 31, the refrigerant absorbs the heat of the hot water and is vaporized and warmed up to low-temperature low-pressure refrigerant steam, the hot water is cooled down and then flows back to the heat storage water tank 15 or the external heat source from the water outlet 32, the refrigerant steam is discharged through the end a and the end b of the first four-way valve 131, and flows back to the return port 12 of the compressor 1 after passing through the gas-liquid separator 2, and the main circulation of the refrigerant is ended to enter the next circulation.

The mode is a first defrosting mode with priority, the unit is started after receiving a defrosting signal, and when the temperature of water in the heat storage water tank is lower than a certain temperature (such as 5 ℃), the unit is converted into a second defrosting mode, namely a solar defrosting mode.

Embodiment two: the heat recovery unit of the evaporative cooling solar energy and air heat source composite heat pump replaces the functional module 10 with the second functional module 10a based on the structure of the first embodiment, namely the structure of the second embodiment, as shown in fig. 24. The second functional module has a U, V interface; the second functional module 10a comprises a liquid storage tank 7, a dry filter 8 and a first electronic expansion valve 101, and a U interface is sequentially connected with the liquid storage tank 7, the dry filter 8, the first electronic expansion valve 101 and a V interface. When the functional module 10 is replaced by the second functional module 10a, the compressor is a common compressor, the common compressor only has an outflow port 111 and a return port 112, and the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit can only be used for refrigerating and heating in a non-cold environment (-10 ℃ above).

Embodiment III: the heat recovery unit of the evaporative cooling solar energy and air heat source composite heat pump replaces the indoor side heat exchanger 5 with a multi-connected indoor unit 5a on the basis of the structure of the first embodiment, namely a structure for implementing three, as shown in fig. 25. The multi-connected indoor unit 5a comprises a refrigerant fin heat exchanger and an indoor side fan, and the indoor side fan enables air to flow through the surface of the refrigerant fin heat exchanger and is used for refrigerating and heating of the unit.

Embodiment four: the heat recovery unit of the evaporative cooling solar energy and air heat source composite heat pump is characterized in that on the basis of the structure of the first embodiment, the functional module 10 is replaced by a second functional module 10a, and meanwhile, the indoor side heat exchanger 5 is replaced by a multi-connected indoor unit 5a, namely, the structure of implementing four is shown in fig. 26.

Fifth embodiment: in the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, the outdoor side heat exchange portion 4 is replaced with the second outdoor side heat exchange portion 4a on the basis of the structure of the first embodiment, as shown in fig. 27 and 31. The second outdoor heat exchange part 4a is provided with a R, S interface; the second outdoor side heat exchange part 4a comprises a fan 41, an air cooling heat exchanger 42, an evaporative cooling heat exchanger 45, a sprayer 43, a spray pump 44, a water collection tank 46, a third functional electromagnetic valve C and a fourth functional electromagnetic valve D; the inlet end C1 of the third functional electromagnetic valve C and the inlet end D1 of the fourth functional electromagnetic valve D are connected in parallel and then are connected with the R interface of the second outdoor side heat exchange part 4a, the outlet end C2 of the third functional electromagnetic valve C is connected with the inlet end 421 of the air cooling heat exchanger 42, the outlet end D2 of the fourth functional electromagnetic valve D is connected with the inlet end 451 of the evaporative cooling heat exchanger 45, and the outlet end 422 of the air cooling heat exchanger 42 and the outlet end 452 of the evaporative cooling heat exchanger 45 are connected in parallel and then are connected with the S interface of the second outdoor side heat exchange part 4 a.

Example six: in the evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, the outdoor side heat exchange portion 4 is replaced with the third outdoor side heat exchange portion 4b on the basis of the structure of the first embodiment, as shown in fig. 28 and 32. The third outdoor side heat exchange part 4b is provided with a R, S interface; the third outdoor side heat exchange part 4b comprises a fan 41, an air cooling heat exchanger 42, an evaporative cooling heat exchanger 45, a sprayer 43, a spray pump 44, a water collection tank 46, a fifth function electromagnetic valve E and a sixth function electromagnetic valve F; the R interface of the third outdoor side heat exchange part 4b is connected with the inlet end 421 of the air cooling heat exchanger 42, the outlet end 422 of the air cooling heat exchanger 42 is connected with the inlet end 451 of the evaporative cooling heat exchanger 45, the outlet end 452 of the evaporative cooling heat exchanger 45 is connected with the inlet end F1 of the sixth functional electromagnetic valve F, the outlet end 422 of the air cooling heat exchanger 42 is also connected with the inlet end E1 of the fifth functional electromagnetic valve E, and the outlet end E2 of the fifth functional electromagnetic valve E is connected with the outlet end F2 of the sixth functional electromagnetic valve F in parallel and then connected with the S interface of the third outdoor side heat exchange part 4 b.

Although embodiments of the present invention have been described in the specification, these embodiments are presented only, and should not limit the scope of the present invention. Various omissions, substitutions and changes in the form of examples are intended in the scope of the invention.

Claims

1. An evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, which is characterized by comprising:

2. An evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, which is characterized by comprising:

the solar heat exchanger comprises a water supplementing port, a refrigerant coil, a water temperature sensor, a refrigerant inlet, a refrigerant outlet, an overflow port, a solar upper circulation port and a solar lower circulation port, wherein the solar upper circulation port is respectively connected with one end of a first water supplementing valve and one end of a solar heat collecting vacuum tube, and the solar lower circulation port is connected with the other end of the solar heat collecting vacuum tube through a solar circulation pump; the water inlet of the multifunctional heat exchanger is connected with one end of an external heat source, and the water outlet of the multifunctional heat exchanger is connected with the other end of the external heat source; the refrigerant outlet of the solar heat exchanger is connected with an i interface of the third four-way valve; the refrigerant inlet of the solar heat exchanger is connected with the U interface of the functional module through a fifth electromagnetic valve, a ninth electromagnetic valve and a second one-way valve, and the refrigerant inlet of the solar heat exchanger is connected with the V interface of the functional module through the fifth electromagnetic valve, the ninth electromagnetic valve and a fourth one-way valve.

3. The evaporative cooling solar energy and air heat source composite heat pump heat recovery unit according to claim 1 or 2, wherein the functional module comprises a liquid storage tank, a dry filter, a first electronic expansion valve, an economizer, a second electronic expansion valve and a sixth electromagnetic valve, and a U interface of the functional module is sequentially connected with the liquid storage tank, the dry filter, the economizer, the first electronic expansion valve and the V interface; the drying filter is sequentially connected with a sixth electromagnetic valve, a second electronic expansion valve, an economizer and a Q interface; the drier-filter is also connected with a P interface.

4. The evaporative cooling solar energy and air heat source composite heat pump heat recovery unit according to claim 1 or 2, wherein the outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporative cooling heat exchanger, a sprayer, a spray pump, a water collection tank, a first functional electromagnetic valve A and a second functional electromagnetic valve B; the spray pump is arranged in the water collecting tank; the fan enables air to flow through the surface of the air-cooled heat exchanger, and the sprayer sprays cooling water to the surface of the evaporative cold heat exchanger; the R interface of the outdoor side heat exchange part is sequentially connected with the inlet end of the evaporative cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger, the inlet end of the air cooling heat exchanger and the outlet end of the air cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger is also connected with the inlet end of the second functional electromagnetic valve B, the outlet end of the air cooling heat exchanger is also connected with the inlet end of the first functional electromagnetic valve A, and the outlet end of the second functional electromagnetic valve B and the outlet end of the first functional electromagnetic valve A are connected in parallel and then are connected with the S interface of the outdoor side heat exchange part.

5. The evaporative cooling solar energy and air heat source composite heat pump heat recovery unit according to claim 1 or 2, wherein the indoor side heat exchanger is replaced by a multi-connected indoor unit, the multi-connected indoor unit comprises a refrigerant fin heat exchanger and an indoor side fan, and the indoor side fan enables air to flow through the surface of the refrigerant fin heat exchanger for refrigerating and heating of the unit.

6. The evaporative cooling solar energy and air heat source composite heat pump heat recovery unit according to claim 4, wherein the outdoor side heat exchange portion is replaced with a second outdoor side heat exchange portion, and the second outdoor side heat exchange portion has a R, S interface; the second outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporation cooling heat exchanger, a sprayer, a spray pump, a water collecting tank, a third functional electromagnetic valve C and a fourth functional electromagnetic valve D; the inlet end of the third functional electromagnetic valve C and the inlet end of the fourth functional electromagnetic valve D are connected in parallel and then are connected with the R interface of the second outdoor side heat exchange part, the outlet end of the third functional electromagnetic valve C is connected with the inlet end of the air cooling heat exchanger, the outlet end of the fourth functional electromagnetic valve D is connected with the inlet end of the evaporation cooling heat exchanger, and the outlet end of the air cooling heat exchanger and the outlet end of the evaporation cooling heat exchanger are connected in parallel and then are connected with the S interface of the second outdoor side heat exchange part.

7. The evaporative cooling solar energy and air heat source composite heat pump heat recovery unit according to claim 4, wherein the outdoor side heat exchange portion is replaced with a third outdoor side heat exchange portion, and the third outdoor side heat exchange portion is provided with a R, S interface; the third outdoor side heat exchange part comprises a fan, an air cooling heat exchanger, an evaporation cooling heat exchanger, a sprayer, a spray pump, a water collecting tank, a fifth functional electromagnetic valve E and a sixth functional electromagnetic valve F; the R interface of the third outdoor side heat exchange part is connected with the inlet end of the air-cooled heat exchanger, the outlet end of the air-cooled heat exchanger is connected with the inlet end of the evaporative cooling heat exchanger, the outlet end of the evaporative cooling heat exchanger is connected with the inlet end of the sixth functional electromagnetic valve, the outlet end of the air-cooled heat exchanger is also connected with the inlet end of the fifth functional electromagnetic valve E, and the outlet end of the fifth functional electromagnetic valve E is connected with the S interface of the third outdoor side heat exchange part after being connected with the outlet end of the sixth functional electromagnetic valve in parallel.

8. An evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, which is characterized by comprising:

a second functional module having a U, V interface; the second functional module comprises a liquid storage tank, a dry filter and a first electronic expansion valve, and the U-shaped interface is sequentially connected with the liquid storage tank, the dry filter, the first electronic expansion valve and the V-shaped interface;

the S interface of the outdoor side heat exchange part is connected with the U interface of the second functional module through a first electromagnetic valve and a first one-way valve and is connected with the V interface of the second functional module through a first electromagnetic valve and a third one-way valve; the S interface of the outdoor side heat exchange part is connected with the V interface of the second functional module through a first electromagnetic valve, an eighth electromagnetic valve and a ninth electromagnetic valve and a fourth one-way valve; the indoor side heat exchanger is provided with a M, N interface, the U interface of the second functional module is connected with the N interface of the indoor side heat exchanger through a second one-way valve and a second electromagnetic valve, and the V interface of the second functional module is connected with the N interface of the indoor side heat exchanger through a fourth one-way valve and a second electromagnetic valve; the M interface of the indoor side heat exchanger is connected with the f interface of the second four-way valve;

The multifunctional heat exchanger is provided with a O, T interface, a water inlet and a water outlet, and the T interface of the multifunctional heat exchanger is connected with the fourth electromagnetic valve through a fifth one-way valve or a sixth one-way valve, then is connected with the U interface of the second functional module through a second one-way valve, or is connected with the V interface of the second functional module through a fourth one-way valve; the T interface of the multifunctional heat exchanger is respectively connected with the first check valve and the third check valve after passing through the fifth check valve and the third electromagnetic valve; the O interface of the multifunctional heat exchanger is connected with the a interface of the first four-way valve;

the solar heat exchanger comprises a water supplementing port, a refrigerant coil, a water temperature sensor, a refrigerant inlet, a refrigerant outlet, an overflow port, a solar upper circulation port and a solar lower circulation port, wherein the solar upper circulation port is respectively connected with one end of a first water supplementing valve and one end of a solar heat collecting vacuum tube, and the solar lower circulation port is connected with the other end of the solar heat collecting vacuum tube through a solar circulation pump; the other end of the solar heat collection vacuum tube is connected with a water injection port of the heat storage water tank through a second water supplementing valve; the hot water lower circulation port of the heat storage water tank is connected with the water inlet of the multifunctional heat exchanger, and the water outlet of the multifunctional heat exchanger is connected with the hot water upper circulation port of the heat storage water tank; the refrigerant outlet of the solar heat exchanger is connected with an i interface of the third four-way valve; the refrigerant inlet of the solar heat exchanger is connected with the U interface of the second functional module through a fifth electromagnetic valve, a ninth electromagnetic valve and a second one-way valve, and the refrigerant inlet of the solar heat exchanger is connected with the V interface of the second functional module through the fifth electromagnetic valve, the ninth electromagnetic valve and a fourth one-way valve.

9. An evaporative cooling solar energy and air heat source composite heat pump heat recovery unit, which is characterized by comprising:

The S interface of the outdoor side heat exchange part is connected with the U interface of the second functional module through a first electromagnetic valve and a first one-way valve and is connected with the V interface of the second functional module through a first electromagnetic valve and a third one-way valve; the S interface of the outdoor side heat exchange part is connected with the V interface of the second functional module through a first electromagnetic valve, an eighth electromagnetic valve and a ninth electromagnetic valve and a fourth one-way valve;

the indoor side heat exchanger is provided with a M, N interface, the U interface of the second functional module is connected with the N interface of the indoor side heat exchanger through a second one-way valve and a second electromagnetic valve, and the V interface of the second functional module is connected with the N interface of the indoor side heat exchanger through a fourth one-way valve and a second electromagnetic valve; the M interface of the indoor side heat exchanger is connected with the f interface of the second four-way valve;

The solar heat exchanger comprises a water supplementing port, a refrigerant coil, a water temperature sensor, a refrigerant inlet, a refrigerant outlet, an overflow port, a solar upper circulation port and a solar lower circulation port, wherein the solar upper circulation port is respectively connected with one end of a first water supplementing valve and one end of a solar heat collecting vacuum tube, and the solar lower circulation port is connected with the other end of the solar heat collecting vacuum tube through a solar circulation pump; the water inlet of the multifunctional heat exchanger is connected with one end of an external heat source, and the water outlet of the multifunctional heat exchanger is connected with the other end of the external heat source; the refrigerant outlet of the solar heat exchanger is connected with an i interface of the third four-way valve; the refrigerant inlet of the solar heat exchanger is connected with the U interface of the second functional module through a fifth electromagnetic valve, a ninth electromagnetic valve and a second one-way valve, and the refrigerant inlet of the solar heat exchanger is connected with the V interface of the second functional module through the fifth electromagnetic valve, the ninth electromagnetic valve and a fourth one-way valve.