A multi-functional evaporative cooling heat pump device

Abstract

The present invention relates to a multifunctional evaporative cooling heat pump device, which is characterized by comprising an evaporative cooling heat exchanger, a plate heat exchanger, and a first water pump; the evaporative cooling heat exchanger is communicated with the inlet and outlet pipelines of the plate heat exchanger; the water outlet of the first water pump is communicated with a water inlet pipeline of the plate heat exchanger; the evaporative cooling heat exchanger is used for transporting the cooling water in the water receiving tray to the plate heat exchanger to perform heat exchange with the water from the demand side of the second water pump in the plate heat exchanger. The beneficial effects are as follows: during cooling, the heat in the cooling water is recovered for reheating or free heating; while during heating, the cold in the cooling water is recovered for free cooling in winter.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pump systems, and more particularly to a multifunctional evaporative cooling heat pump device. Background Art

[0002] Evaporative cooling heat pump is a new type of energy-saving air conditioning system. The principle of evaporative cooling is to spray water onto the surface of the condenser to form a water film, which directly contacts the air for heat and moisture exchange. Part of the water absorbs the latent heat of vaporization and evaporates into water vapor, which is then discharged by the fan, thus promoting the discharge of condensation heat. The heat exchange efficiency of evaporative cooling heat pump is significantly higher than that of air-cooled heat pump and water-cooled unit, and it simplifies the cooling water system. Compared with traditional chillers, it can save more than 15% of energy, and compared with air-cooled heat pumps, it can save more than 30% of energy.

[0003] However, the evaporative cooling heat pump can only achieve simple cooling and heating functions at present, with relatively single functions, and the energy-saving potential has not been fully explored. Summary of the Invention

[0004] The present invention aims at the technical problems existing in the prior art and provides a multifunctional evaporative cooling heat pump device.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A multifunctional evaporative cooling heat pump device includes an evaporative cooling heat exchanger, a plate heat exchanger, and a first water pump;

[0006] The inlet and outlet pipelines of the evaporative cooling heat exchanger are connected to those of the plate heat exchanger;

[0007] The outlet of the first water pump is connected to an inlet pipeline of the plate heat exchanger;

[0008] The evaporative cooling heat exchanger is used to transport the cooling water in the water receiving tray to the plate heat exchanger for heat exchange with the water from the demand side of the second water pump in the plate heat exchanger.

[0009] As a further technical solution: The evaporative cooling heat exchanger includes a spray pipe, a refrigerant pipe, and a water receiving tray located inside the shell;

[0010] The spray pipe is located above the refrigerant pipe to spray cooling water onto the refrigerant pipe to form a water film inside the shell. The water receiving tray is located below the refrigerant pipe, and the first water pump is used to transport the cooling water in the water receiving tray to the plate heat exchanger for heat exchange or back to the evaporative cooling heat exchanger;

[0011] Wherein, the water receiving tray is used to receive the cooled cooling water or the cooling water directly discharged through the spray pipe.

[0012] As a further technical solution: A first valve is also provided on the spray pipe;

[0013] The pipeline where the first valve is located is provided with two branches extending out of the evaporative heat exchanger, and the two branches are respectively connected with the inlet and outlet of the primary side of the plate heat exchanger;

[0014] A second valve is provided on the branch line connected to the inlet of the primary side of the plate heat exchanger, and a third valve is provided on the branch line connected to the outlet of the primary side of the plate heat exchanger;

[0015] The second water pump is arranged on the cooling / heating pipe on the secondary side of the plate heat exchanger, and the cooling / heating pipe is communicated with the external demand side.

[0016] As a further technical solution: the evaporative heat exchanger further includes a fan located in the shell, and an air outlet, a first air inlet, and a second air inlet on the shell;

[0017] The fan is used to discharge the evaporated water vapor in the housing from the air outlet;

[0018] The first air inlet is opposite to the spray pipe to blow air toward the cooling water in the shell and the refrigerant pipe;

[0019] The second air inlet is opposite to the water film and is used to blow air toward the water film for heat exchange.

[0020] As a further technical solution: a heat exchanger group and a fifth valve and a sixth valve are provided at the second air inlet;

[0021] The water outlet of the first water pump is provided with two branches, one branch is connected to the inlet of the heat exchanger group through the fifth valve, and the other branch is connected to the second valve through the sixth valve, and the outlet of the heat exchanger group is connected to the outlet of the sixth valve;

[0022] The second air inlet is arranged on a side of the heat exchanger group away from the evaporative heat exchanger, so that the cooling water from the evaporative heat exchanger exchanges heat with the wind from the second air inlet after passing through the fifth valve, precooling the incoming air, and the heated cooling water flows back to the evaporative heat exchanger.

[0023] As a further technical solution: one end of the refrigerant pipe is connected to the outlet end of the air-cooled heat exchanger and the water-cooled heat exchanger through a reversing valve, and the other end of the refrigerant pipe is connected to the inlet end of the air-cooled heat exchanger and the water-cooled heat exchanger through a pipeline;

[0024] The first port and the second port of the reversing valve are respectively connected to the outlet ends of the air-cooled heat exchanger and the water-cooled heat exchanger.

[0025] As a further technical solution: a compressor is connected between the reversing valve and the air-cooled heat exchanger via a pipeline;

[0026] Among them, the third port of the reversing valve is communicated with the compressor; the fourth port of the reversing valve is communicated with the refrigerant pipe.

[0027] As a further technical solution: fourth valves for controlling the refrigerant flow rate are provided on the pipeline between the reversing valve and the evaporative cooling heat exchanger, the pipeline between the reversing valve and the air-cooled heat exchanger, and the outlet pipeline of the refrigerant pipe.

[0028] As a further technical solution: a cold and hot water pump is provided on the inlet or outlet water pipe of the water-cooled heat exchanger.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. When the present invention structure is used for cooling, the heat in the cooling water is recovered for reheating or free heating; when heating, the cold in the cooling water is recovered for free cooling in winter;

[0031] 2. The present invention structure can recover the cold in the air for free cooling; and can also precisely control the recovered cold and heat and their water temperatures by adjusting the sizes of each water pump, air inlet, valve and fan. Description of the Drawings

[0032] Figure 1 It is a schematic flow chart of the device of the present invention, where the direction indicated by the arrow represents the flow direction of gas or liquid;

[0033] In the drawings, the list of components represented by each reference numeral is as follows:

[0034] Evaporative cooling heat exchanger 1, plate heat exchanger 2, first water pump 3, water receiving tray 4, second water pump 5, housing 6, spray pipe 7, refrigerant pipe 8, reversing valve 9, air-cooled heat exchanger 10, water-cooled heat exchanger 11, cold and hot water pump 12, compressor 13, fourth valve 14, first valve 15, second valve 16, third valve 17, fan 18, air outlet 19, first air inlet 20, second air inlet 21, expansion valve 22, heat exchanger group 23, fifth valve 24, sixth valve 25. Detailed Embodiments

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0036] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0037] In the description of the present application, the term "for example" is used to mean "serving as an example, illustration, or explanation". Any embodiment described as "for example" in the present application is not necessarily construed as being more preferred or having more advantages than other embodiments. The following description is given to enable any person skilled in the art to implement and use the present invention. In the following description, details are set forth for purposes of explanation. It should be understood that those of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope that conforms to the principles and features disclosed in the present application.

[0038] Embodiment 1

[0039] A multifunctional evaporative cooling heat pump device provided by the present invention has the functions of providing heat for free while cooling, providing cold for free while heating, and free cooling by evaporative cooling, and can simultaneously achieve the precise control functions of cold and heat. It can completely replace four-pipe air-cooled heat pump units, heat recovery type chiller / heat pump units, cold recovery type hot water units, and evaporative cooling air-conditioning units. Moreover, the optimized evaporative cooling heat pump can not only be applied to arid regions to exert the function of free cooling by evaporative cooling, but also be applied to semi-arid regions, using free cooling by evaporative cooling usually and switching to compression refrigeration in extremely hot weather, and can even be applied in humid regions to reduce the cooling water temperature and improve the efficiency of compression refrigeration. Therefore, this technology has a wide range of application prospects and will become an important technical means to achieve the carbon reduction goal.

[0040] The specific structure includes an evaporative cooling heat exchanger 1, a plate heat exchanger 2, and a first water pump 3;

[0041] The inlet and outlet pipes of the evaporative cooling heat exchanger 1 are communicated with those of the plate heat exchanger 2, and the water on the demand side is heat-exchanged with the water in the evaporative cooling heat exchanger 1 through the plate heat exchanger 2;

[0042] The outlet of the first water pump 3 is communicated with an inlet pipe of the plate heat exchanger 2, and the cooling water in the evaporative cooling heat exchanger 1 is transported to the plate heat exchanger 2 through the first water pump 3;

[0043] The evaporative cooling heat exchanger 1 is used to transport the cooling water in the water receiving tray 4 to the plate heat exchanger 2, so as to exchange heat with the water from the demand side of the second water pump 5 in the plate heat exchanger 2, and then realize free heating or cooling.

[0044] In the specific implementation process,

[0045] The evaporative cooling heat exchanger 1 includes a spray pipe 7, a refrigerant pipe 8, and a water receiving tray 4 located in a housing 6;

[0046] The spray pipe 7 is located above the refrigerant pipe 8 to spray cooling water onto the refrigerant pipe 8 to form a water film in the housing 6. The water receiving tray 4 is located below the refrigerant pipe 8, and the first water pump 3 is used to transport the cooling water in the water receiving tray 4 to the plate heat exchanger 2 for heat exchange or return to the evaporative cooling heat exchanger 1; the first water pump 3 is arranged in the water receiving tray 4; wherein, the water receiving tray 4 is used to receive the cooling water after temperature change or the cooling water directly discharged from the spray pipe 7, depending on the specific situation.

[0047] More specifically, one port of the refrigerant pipe 8 is connected to the outlet ends of the air-cooled heat exchanger 10 and the water-cooled heat exchanger 11 through a reversing valve 9, and the other port of the refrigerant pipe 8 is connected to the inlet ends of the air-cooled heat exchanger 10 and the water-cooled heat exchanger 11 through a pipeline; a cold and hot water pump 12 is provided on the inlet or outlet water pipe of the water-cooled heat exchanger 11 for heat exchange of the water on the demand side of the water-cooled heat exchanger 11.

[0048] Wherein, the first port and the second port of the reversing valve 9 are respectively connected to the outlet ends of the air-cooled heat exchanger 10 and the water-cooled heat exchanger 11.

[0049] A compressor 13 is connected between the reversing valve 9 and the air-cooled heat exchanger 10 through a pipeline; wherein, the third port of the reversing valve 9 is connected to the compressor 13; the fourth port of the reversing valve 9 is connected to the refrigerant pipe 8.

[0050] Fourth valves 14 for controlling the refrigerant flow rate are provided on the pipeline between the reversing valve 9 and the evaporative cooling heat exchanger 1, the pipeline between the reversing valve 9 and the air-cooled heat exchanger 10, the outlet pipeline of the refrigerant pipe 8, and the inlet end of the air-cooled heat exchanger 10.

[0051] An expansion valve 22 is provided at the inlet end of the water-cooled heat exchanger 11.

[0052] Embodiment 2

[0053] Based on Embodiment 1, a first valve 15 is further provided on the spray pipe 7; there are two branches extending out of the evaporation-cooling heat exchanger 1 on the pipeline where the first valve 15 is located, and the two branches are respectively communicated with the inlet and outlet of the primary side of the plate heat exchanger 2, so as to transport the cooling water in the evaporation-cooling heat exchanger 1 to the plate heat exchanger 2 for heat exchange, so that the water on the demand side completes heat exchange under the power action of the second water pump 5;

[0054] A second valve 16 is provided on the branch communicated with the inlet of the primary side of the plate heat exchanger 2, and a third valve 17 is provided on the branch communicated with the outlet of the primary side of the plate heat exchanger 2, for controlling the flow rate;

[0055] The second water pump 5 is arranged on the cooling / heating pipe on the secondary side of the plate heat exchanger 2, and the cooling / heating pipe is communicated with the external demand side.

[0056] Embodiment 3

[0057] Based on Embodiment 2, the evaporation-cooling heat exchanger 1 further includes a fan 18 located in the housing 6, as well as an air outlet 19, a first air inlet 20, and a second air inlet 21 on the housing 6;

[0058] The fan 18 is used to discharge the water vapor evaporated in the housing 6 from the air outlet 19; the first air inlet 20 is opposite to the spray pipe 7 to blow air to the cooling water and the refrigerant pipe 8 in the housing 6; the second air inlet 21 is opposite to the water film, so as to blow air to the water film for heat exchange.

[0059] In a further implementation scheme, a heat exchanger group 23, a fifth valve 24, and a sixth valve 25 are provided at the second air inlet 21;

[0060] Two branches are provided at the water outlet end of the first water pump 3. One branch is communicated with the inlet end of the heat exchanger group 23 through the fifth valve 24, and the other branch passes through the sixth valve 25 and is communicated with the second valve 16. The outlet end of the heat exchanger group 23 is communicated with the outlet end of the sixth valve 25.

[0061] More specifically, the second air inlet 21 is provided on the side of the heat exchanger group 23 away from the evaporative cooling heat exchanger 1. When it is necessary to strengthen the heat dissipation of the evaporative cooling heat exchanger 1, the outdoor air is precooled by the cooling water, which is beneficial to reducing the water temperature of the cooling water, thereby improving the refrigeration efficiency of the heat pump device. The specific operation is to make the cooling water from the evaporative cooling heat exchanger 1 pass through the fifth valve 24 and then exchange heat with the air at the second air inlet 21 to cool down, and then be transported to the spray pipe 7 through the water outlet pipe and the first valve 15 (at this time, the sixth valve 25 is closed, so that the cooling water enters the heat exchanger group 23 after passing through the fifth valve 24), improving the refrigeration efficiency of the heat pump device; when precooling is not required, the fifth valve 24 is closed and the sixth valve 25 is opened.

[0062] The present invention is implemented as follows:

[0063] I. Free heating while cooling:

[0064] When cooling in summer, the evaporative cooling heat exchanger 1 serves as a condenser and the water-cooled heat exchanger 11 serves as an evaporator. The specific process is as follows:

[0065] The refrigerant is transported from the water-cooled heat exchanger 11 to the reversing valve 9 and then compressed into a high-pressure refrigerant by the compressor 13, and then flows into the reversing valve 9 and enters the evaporative cooling heat exchanger 1. At this time, the high-temperature and high-pressure refrigerant flows through the refrigerant pipe 8. Since the spray pipe 7 sprays cooling water onto the refrigerant pipe 8 filled with refrigerant to form a water film, the refrigerant in the refrigerant pipe 8 exchanges heat with the cooling water, and the cooled refrigerant is discharged from the outlet end of the refrigerant pipe 8 to the water-cooled heat exchanger 11 to achieve the purpose of cooling;

[0066] The heated cooling water moves to the water receiving tray 4, passes through the first water pump 3 and the second valve 16, and is transported to the plate heat exchanger 2. In the plate heat exchanger 2, the water on the demand side of the second water pump 5 exchanges heat with the cooling water from the heated water receiving tray 4, so that the water on the demand side of the second water pump 5 is heated and then discharged for use to achieve the purpose of free heating, while the cooling water is cooled and then flows to the spray pipe 7 through the third valve 17 to complete a cycle and achieve the purpose of free heating.

[0067] In this process, if it is necessary to recover all the heat, the fan 18 and the second air inlet 21 can be closed to recover all the heat in the cooling water;

[0068] If heat recovery is required, the reasonable distribution of energy can be achieved by adjusting the air volume of the fan 18, the air volume distribution of the first air inlet 20 and the second air inlet 21, and the water volume distribution of the first valve 15, the second valve 16, and the third valve 17, so that part of the heat is discharged to the outside through the fan 18, thereby precisely controlling the recovered heat and its water temperature;

[0069] II. Free cooling of the evaporative cooling heat exchanger 1:

[0070] When the wet bulb temperature outdoors is relatively low, the compressor 13 is not operated, and free cooling is carried out using the low-temperature cooling water prepared by the evaporative cooling heat exchanger 1. The specific steps are as follows:

[0071] The refrigerant pipe 8 does not need to operate, and the first air inlet 20 is closed;

[0072] The spray pipe 7 is opened, so that the cooling water flows to the water receiving tray 4 and then is transported by the first water pump 3. Specifically, it is divided into two paths for transportation. One path moves to the first valve 15 and then to the spray pipe 7, and the other path moves to the second valve 16 and then to the plate heat exchanger 2. In the plate heat exchanger 2, heat exchange is carried out with the water on the demand side of the second water pump 5, so that the water on the demand side of the second water pump 5 is cooled and then discharged for use to achieve the purpose of free cooling. The heated cooling water flows to the spray pipe 7 through the third valve 17 and converges with the cooling water from the first valve 15, and then is sprayed under the action of the spray pipe 7. The fifth valve 24 is opened (at this time, the sixth valve 25 is closed), and the cooling water enters the heat exchanger group 23 through the fifth valve 24 and exchanges heat with the outdoor air at the second air inlet 21 to pre-cool the outdoor air. The heated cooling water flows back to the evaporative cooling heat exchanger 1 (that is, the heated cooling water then enters the spray pipe 7 after passing through the first valve 15 in sequence), that is, a cycle is completed to achieve the purpose of free cooling;

[0073] In this process, the reasonable distribution of energy can be achieved by adjusting the water volume of the first water pump 3, the air volume of the fan 18, and the water volume distribution of the first valve 15, the second valve 16, and the third valve 17, so as to precisely control the water volume and water temperature of free cooling.

[0074] In this process, the valves between the evaporative cooling heat exchanger 1 and the reversing valve 9 and the valves between the evaporative cooling heat exchanger 1 and the water-cooled heat exchanger 11 are all closed.

[0075] III. Free cooling while heating: There are the following two schemes for free cooling while heating in winter. Scheme 1:

[0076] When heating, the evaporative cooling heat exchanger 1 can be used as an evaporator, and the water-cooled heat exchanger 11 can be used as a condenser. The specific process is as follows:

[0077] The refrigerant at low temperature and low pressure flows out of the evaporative cooling heat exchanger 1 from the refrigerant pipe 8, passes through the reversing valve 9 and then goes to the compressor 13 for compression. The compressed high-temperature refrigerant sequentially passes through the reversing valve 9 and the water-cooled heat exchanger 11 for condensation and then is transported to the evaporative cooling heat exchanger 1. The spray pipe 7 is opened to make the cooling water spray on the refrigerant pipe 8 to form a water film in the housing 6. The refrigerant in the refrigerant pipe 8 is heated and then discharged to complete heat supply. At this time, the temperature of the cooling water decreases.

[0078] When all the cold is needed to be recovered, the fan 18, the first valve 15, and the second air inlet 21 are closed. The cooled cooling water flows to the water receiving tray 4 and then, under the action of the first water pump 3, sequentially flows through the second valve 16, the plate heat exchanger 2, and the third valve 17 to the spray pipe 7. During this process, the cooled cooling water exchanges heat with the water from the demand side of the second water pump 5 in the plate heat exchanger 2, so that the water from the demand side of the second water pump 5 is cooled and then discharged for use to achieve the purpose of free cooling. And the cooling water heated in the plate heat exchanger 2 flows to the spray pipe 7 to complete a cycle.

[0079] When partial cold recovery is needed, by adjusting the air volume of the fan 18, the air volume distribution of the first air inlet 20 and the second air inlet 21, and the water volume distribution of the first valve 15, the second valve 16, and the third valve 17, reasonable energy distribution is achieved, so that part of the cold is discharged to the outside through the fan 18, thereby accurately controlling the recovered cold and its water temperature.

[0080] Solution Two

[0081] During heat supply, the air-cooled heat exchanger 10 operates as an evaporator, the water-cooled heat exchanger 11 operates as a condenser, and the evaporative cooling heat exchanger 1 operates according to the second free cooling condition described above (this free cooling process is the same as the above, so it will not be elaborated).

[0082] And the heat supply process is as follows:

[0083] The compressor 13 compresses the refrigerant from the air-cooled heat exchanger 10, and then transports it through the reversing valve 9 to the water-cooled heat exchanger 11 for heat exchange with the air-conditioning hot water. The air-conditioning hot water is heated, and the cooled refrigerant becomes a low-temperature and low-pressure refrigerant after passing through the expansion valve 22 and then returns to the air-cooled heat exchanger 10 to exchange heat with the outdoor air and absorb the heat in the outdoor air. And the water on the demand side of the cold and hot water pump 12 is heated during this process to achieve the purpose of heat supply.

[0084] During the implementation process of the above implementation solutions, the control method is as shown in Table 1 below:

[0085]

[0086] It should be noted that in the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0087] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A multifunctional evaporative cooling heat pump device, characterized in that, It includes an evaporative cooling heat exchanger (1), a plate heat exchanger (2), and a first water pump (3); The evaporative cooling heat exchanger (1) is connected to the inlet and outlet pipes of the plate heat exchanger (2); The water outlet of the first water pump (3) is connected to an inlet pipe of the plate heat exchanger (2); The evaporative cooling heat exchanger (1) is used to transport the cooling water in the water receiving tray (4) to the plate heat exchanger (2) for heat exchange with the water from the demand side of the second water pump (5) in the plate heat exchanger (2); The evaporative cooling heat exchanger (1) includes a spray pipe (7), a refrigerant pipe (8), and a water receiving tray (4) located inside the housing (6); The spray pipe (7) is located above the refrigerant pipe (8) to spray cooling water onto the refrigerant pipe (8) to form a water film inside the housing (6). The water receiving tray (4) is located below the refrigerant pipe (8), and the first water pump (3) is used to transport the cooling water in the water receiving tray (4) to the plate heat exchanger (2) for heat exchange or back to the evaporative cooling heat exchanger (1); Wherein, the water receiving tray (4) is used to receive the cooling water after temperature change or the cooling water directly discharged through the spray pipe (7); One port of the refrigerant pipe (8) is connected to the outlet ends of the air-cooled heat exchanger (10) and the water-cooled heat exchanger (11) through a reversing valve (9), and the other port of the refrigerant pipe (8) is connected to the inlet ends of the air-cooled heat exchanger (10) and the water-cooled heat exchanger (11) through a pipe; Wherein, the first port and the second port of the reversing valve (9) are respectively connected to the outlet ends of the air-cooled heat exchanger (10) and the water-cooled heat exchanger (11); A compressor (13) is connected between the reversing valve (9) and the air-cooled heat exchanger (10) through a pipeline; wherein, the third port of the reversing valve (9) is connected to the compressor (13); the fourth port of the reversing valve (9) is connected to the refrigerant pipe (8); Fourth valves (14) for controlling the refrigerant flow rate are provided on the pipeline between the reversing valve (9) and the evaporative cooling heat exchanger (1), the pipeline between the reversing valve (9) and the air-cooled heat exchanger (10), the outlet pipeline of the refrigerant pipe (8), and the inlet end of the air-cooled heat exchanger (10).

2. The multifunctional evaporative cooling heat pump device according to claim 1, characterized in that, A first valve (15) is also provided on the spray pipe (7); Two branches extending out of the evaporative cooling heat exchanger (1) are provided on the pipeline where the first valve (15) is located, and the two branches are respectively connected to the inlet and outlet of the primary side of the plate heat exchanger (2); A second valve (16) is provided on the branch connected to the inlet of the primary side of the plate heat exchanger (2), and a third valve (17) is provided on the branch connected to the outlet of the primary side of the plate heat exchanger (2); The second water pump (5) is provided on the cooling / heating pipe on the secondary side of the plate heat exchanger (2), and the cooling / heating pipe is connected to the external demand side.

3. The multifunctional evaporative cooling heat pump device according to claim 2, wherein The evaporative cooling heat exchanger (1) further includes a fan (18) located inside the housing (6), and an air outlet (19), a first air inlet (20), and a second air inlet (21) on the housing (6); The fan (18) is used to discharge the evaporated water vapor in the housing (6) through the air outlet (19); The first air inlet (20) is opposite to the spray pipe (7) so as to blow air toward the cooling water in the shell (6) and the refrigerant pipe (8); The second air inlet (21) is opposite to the water film and is used to blow air toward the water film for heat exchange.

4. The multifunctional evaporative cooling heat pump device according to claim 3, wherein A heat exchanger group (23) and a fifth valve (24) and a sixth valve (25) are provided at the second air inlet (21); The water outlet of the first water pump (3) is provided with two branches, one branch is connected to the inlet of the heat exchanger group (23) through the fifth valve (24), and the other branch is connected to the second valve (16) through the sixth valve (25), and the outlet of the heat exchanger group (23) is connected to the outlet of the sixth valve (25); The second air inlet (21) is arranged on a side of the heat exchanger group (23) away from the evaporative heat exchanger 1, so that the cooling water from the evaporative heat exchanger (1) passes through the fifth valve (24) and exchanges heat with the air from the second air inlet (21), thereby precooling the incoming air, and the heated cooling water flows back to the evaporative heat exchanger (1).

5. A multifunctional evaporative cooling heat pump device according to claim 1, characterized in that, A hot and cold water pump (12) is provided on the water inlet or outlet pipe of the water-cooled heat exchanger (11).

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