Cold supply system

Abstract

The utility model relates to the technical field of cold supply, in particular to a cold supply system, which comprises a heat exchanger, a water tank body and an evaporator coil, the water tank body is used for containing water, a medium water output end and a medium water input end are arranged on the side wall of the water tank body, the evaporator coil is arranged in the water tank body, and refrigerants are contained in the evaporator coil; the medium water output end is communicated with the input end of the first power valve; the output end of the first power valve communicates with the input end of the circulating water pump; the output end of the circulating water pump communicates with the input end of the second power valve; the output end of the second power valve is communicated with the input end of the sub-catchment device, and the sub-catchment device is used for being communicated with a floor heating coil at the tail end of a user; the output end of the water distributing and collecting device is communicated with the input end of the third power valve, and the output end of the third power valve is communicated with the medium water input end. The utility model has the advantages that the temperature of each room can be controlled by controlling the flow, and the temperature control is more flexible.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cold supply technology field, specifically relates to a cold supply system. BACKGROUND

[0002] At present, people's housing usually adopts air conditioning refrigeration to supply cold to the whole room. The traditional air conditioner is easy to produce the blowing feeling and can cause the air conditioner disease, and the radiant air conditioning system is favored by people due to its comfort and energy saving.

[0003] The radiant air conditioner has the capillary tube top plate radiation type and the metal radiation plate type. At present, the most commonly used is the metal radiation plate type radiant air conditioner, which installs the metal radiation plate on the room wall or roof, and the metal radiation plate is usually made of aluminum or copper material, installs the circulating water pipe behind the radiation plate, is used for cooling the radiation plate, then slowly transmits the cold quantity to the room to cool the room. In summary, the radiation plate type air conditioner is cooled by heat radiation and indoor heat exchange to achieve the purpose of cooling.

[0004] However, in actual operation, in the metal radiation plate type cold supply and indoor circulating air conditioning system, there are some problems, and in daily life, the radiation plate is mostly installed on the room ceiling or roof, and the vertical distance from the ground is at least two to three meters, and the distance from the working area of people is at least 1.1 m, the distance from the person to the radiation surface is far, so that the temperature difference of the radiation plate at the ceiling and the working area is more than 3 DEG C, which does not meet the comfort requirement, at the same time, the radiation plate air conditioner needs to be installed on the wall or ceiling, which has great construction difficulty and high cost. INVENTION CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a kind of cold supply system, based on floor heating device design, heat exchange cooling from bottom to top, the distance from the working area of person is close, improve comfort, and installation cost is low.

[0006] The technical scheme of the utility model is:

[0007] A kind of cold supply system, comprising:

[0008] Heat exchanger, including water tank body, evaporator coil, the water tank body is used to contain water, medium water output end, medium water input end are set up on the side wall of the water tank body, the evaporator coil is arranged in the water tank body, the evaporator coil contains refrigerant;

[0009] First power valve, the medium water output end is communicated with the input end of the first power valve;

[0010] Circulating water pump, the first power valve output end is communicated with the input end of the circulating water pump;

[0011] A second power valve, an output end of the circulating water pump being in communication with an input end of the second power valve;

[0012] A distribution header, an output end of the second power valve being in communication with an input end of the distribution header, the distribution header being used for being in communication with a floor heating coil of a user terminal;

[0013] A third power valve, an output end of the distribution header being in communication with an input end of the third power valve, an output end of the third power valve being in communication with the medium water input end.

[0014] Preferably, a refrigerant output end and a refrigerant input end are formed on a side wall of the water tank body, two ends of the evaporator coil being in communication with the refrigerant output end and the refrigerant input end respectively, and the water tank body further comprises:

[0015] A compressor, the refrigerant output end being in communication with an input end of the compressor;

[0016] A condenser, an output end of the compressor being in communication with an input end of the condenser;

[0017] An expansion valve, an output end of the condenser being in communication with an input end of the expansion valve, an output end of the expansion valve being in communication with the refrigerant input end.

[0018] Preferably, the evaporator coil is a serpentine pipe, and the inner wall of the serpentine pipe is uniformly provided with a plurality of fins.

[0019] Preferably, a plurality of baffles are arranged in the water tank body, and the plurality of baffles are respectively located at the bending positions of the serpentine pipe.

[0020] Preferably, a water supplementing opening is formed on the top of the water tank body, a water draining opening is formed on the bottom of the water tank body, the water tank body is a double-layer structure comprising an outer cavity and an inner cavity, the water draining opening, the water supplementing opening, the medium water output end, the medium water input end, the refrigerant output end and the refrigerant input end respectively penetrating the outer cavity and the inner cavity, and a heat preservation layer is arranged between the inner wall of the outer cavity and the outer wall of the inner cavity.

[0021] Preferably, the water supplementing opening is close to the medium water input end, a flow control valve is arranged in the water tank body, the flow control valve is used for controlling the flow of the medium water input end, and the flow control valve comprises:

[0022] A filter bag, arranged at the bottom end of the water supplementing opening;

[0023] A floating ball, arranged in the filter bag;

[0024] A connecting rope, one end of the connecting rope being connected with the side wall of the floating ball;

[0025] a hook is arranged on the inner wall of the inner cavity, and the connecting rope is arranged in the hook;

[0026] a shutter is arranged on one side of the inner cavity where the medium water input end is located, and one end of the connecting rope away from the floating ball is connected to one side of the shutter.

[0027] Preferably, an exhaust valve is arranged on the top of the water tank body, and the exhaust valve is located on the side away from the water replenishing port, the exhaust valve is communicated with the inner cavity, the top of the inner wall of the inner cavity is arranged in an inclined manner, and the side of the top of the inner wall of the inner cavity close to the exhaust valve is lower than the side of the top of the inner wall of the inner cavity close to the water replenishing port, so as to facilitate exhaust.

[0028] Preferably, the slope of the top of the inner wall of the inner cavity is 0.001-0.003.

[0029] Preferably, a backflow prevention structure is arranged on one side of the inner cavity where the medium water output end is located, and the backflow prevention structure comprises:

[0030] a connecting pipe is arranged in the inner cavity, and the connecting pipe is communicated with the medium water output end;

[0031] two link rings are symmetrically arranged on the inner wall of the connecting pipe;

[0032] a baffle is sleeved in the connecting pipe, the side wall of the baffle is hinged to one of the link rings, and the other end of the baffle is located on the side of the other link ring close to the medium water output end.

[0033] Compared with the prior art, the cold supply system has the following beneficial effects:

[0034] The device is based on the existing floor heating device design, first, the installation cost is low, second, the device is different from the prior art, and heat exchange and cooling are from bottom to top, the vertical temperature difference of the working area 1.1 m away from the ground is not more than 3 DEG C, and the comfort is stronger; in addition, the water distribution side of the water distribution device can be communicated with the floor heating coil at the user end one by one, the temperature of each room is controlled, and the temperature control is more flexible. In use, the device circulates the water in the water tank body through the circulating water pump in the floor heating coil at the user end and the water tank body, and the water tank body is provided with an evaporator coil, which contains refrigerant, so that the water in the water tank body exchanges heat with the refrigerant, and the cold quantity in the refrigerant is taken away, and then the circulating water pump is used to pass the cold water into the floor heating coil at the user end to exchange heat, so that the room at the user end is cooled, and the heat-exchanged water is recycled in the water tank body to exchange heat with the refrigerant. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the utility model.

[0036] Figure 2 It is a structure schematic view of the heat exchanger of the utility model;

[0037] Figure 3 It is a structure schematic view of the flow control valve of the utility model;

[0038] Figure 4 It is a structure schematic view of the backflow prevention structure of the utility model;

[0039] Figure 5 It is a structure schematic view of the inside of the evaporator coil of the utility model. DETAILED DESCRIPTION

[0040] One specific embodiment of the utility model will be described in detail below with reference to the drawings, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.

[0041] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the technical scheme of the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model.

[0042] In the description of the utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in this application can be understood according to the specific circumstances.

[0043] In addition, in the description of the utility model, "multiple" means two or more than two. The terms "first", "second" are only for the purpose of description, and cannot be understood as implying or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.

[0044] Example 1

[0045] As Figure 1As shown, the present invention provides a cooling system comprising: a heat exchanger 11, a first power valve 3, a circulating water pump 4, a second power valve 5, a manifold 9, and a third power valve 10. The heat exchanger 11 includes a water tank body and an evaporator coil 23. The water tank body is used to hold water, and a medium water output end 22 and a medium water input end 24 are provided on the side wall of the water tank body. The evaporator coil 23 is disposed within the water tank body and contains refrigerant, which exchanges heat with the water in the water tank body. The medium water output end 22 is connected to the input end of the first power valve 3; the output end of the first power valve 3 is connected to the input end of the circulating water pump 4; and the output end of the circulating water pump 4 is connected to the input end of the second power valve 5. The first power valve 3 and the second power valve 5 are respectively located at the inlet and outlet ends of the circulating water pump 4 to control the water intake. The system includes a water storage tank and a water tank. The first power valve 3 controls the opening and closing of the medium water output terminal 22. The output terminal of the second power valve 5 is connected to the input terminal of the manifold 9, which is used to connect with the underfloor heating coil of the user terminal 13. The circulating water pump 4 pumps water from the water tank body to the manifold 9. The output terminal of the manifold 9 on the water distribution side is connected to the underfloor heating coil of the user terminal 13, which can deliver water to the underfloor heating coil of the user terminal 13. The output terminal of the manifold 9 is connected to the input terminal of the third power valve 10, which is connected to the medium water input terminal 24. The third power valve 10 is located at the medium water input terminal 24 and controls the opening and closing of the medium water input terminal 24. This device is based on the design of existing underfloor heating systems. Water from the water tank is circulated through the heat exchanger 11 via the circulating water pump 4 to the underfloor heating coils at the user terminal 13, where it connects to the water tank. Simultaneously, the water tank contains an evaporator coil 23 filled with refrigerant. This allows the water in the tank to exchange heat with the refrigerant, removing the cold energy from the refrigerant. The circulating water pump 4 then pumps the cold water into the underfloor heating coils at the user terminal 13 for further heat exchange, cooling the room at the user terminal 13. The water, after heat exchange, recirculates back into the water tank to exchange heat with the refrigerant, and this cycle continues. In summary, the manifold 9 is connected to the user terminal 13. The circulating water exchanges heat with the refrigerant in the heat exchanger 11, removing the cold energy from the refrigerant. It then passes through the first power valve 3, the circulating water pump 4, the second power valve 5, and the manifold 9 before entering the user terminal 13 for heat exchange. Finally, it flows back to the heat exchanger 11 through the third power valve 10. This device is based on the design of existing underfloor heating systems. First, the installation cost is low. Second, unlike existing technologies, this device exchanges heat and cools from bottom to top, with a vertical temperature difference of no more than 3℃ in the working area 1.1m above the ground, resulting in greater comfort. Finally, it allows for temperature control in each room, providing greater flexibility in temperature management.

[0046] Among them, such as Figure 1As shown, assuming the underfloor heating coil of user terminal 13 has three zones, the manifold 9 is connected to the underfloor heating coil of user terminal 13 through three loops. These three loops are controlled by the first solenoid valve 6, the second solenoid valve 7, and the third solenoid valve 8, respectively. In other words, the water distribution output of the manifold 9 is connected to the underfloor heating coil of user terminal 13 through the first solenoid valve 6, the second solenoid valve 7, and the third solenoid valve 8, respectively, thus enabling temperature control of each room and providing more flexible temperature control.

[0047] In the above scheme, the refrigerant in the water tank needs to continuously provide cooling capacity to achieve continuous cooling. Furthermore, the side wall of the water tank has a refrigerant output end 15 and a refrigerant input end 17. The two ends of the evaporator coil 23 are connected to the refrigerant output end 15 and the refrigerant input end 17, respectively. The system also includes a compressor 12, a condenser 1, and an expansion valve 2. The refrigerant output end 15 is connected to the input end of the compressor 12; the output end of the compressor 12 is connected to the input end of the condenser 1. The condenser 1 can quickly condense the high-temperature refrigerant vapor after heat exchange into liquid, meaning the refrigerant circulates and exchanges heat within the condenser 1 and the evaporator coil 23. The output end of the condenser 1 is connected to the input end of the expansion valve 2, and the output end of the expansion valve 2 is connected to the refrigerant input end 17. This embodiment optimizes the above scheme to achieve circulating heat exchange of the refrigerant, allowing the refrigerant in the water tank to continuously provide cooling capacity to the water inside the water tank for heat exchange. In summary, this device has two circulation loops: a refrigerant circulation loop and a water circulation loop. It is a refrigerant-water non-contact refrigeration system. The water circulation loop achieves heat exchange with the underfloor heating coils of the user terminal 13, removing the heat from the underfloor heating coils of the user terminal 13 and exchanging heat with the refrigerant in the water tank. The refrigerant in the water tank is circulated again for refrigeration after heat exchange through the refrigerant circulation loop. The condenser 1 carries the heat of the refrigerant, which can then cool the water in the water tank. Through the two circulation loops, the water in the underfloor heating coils of the user terminal 13 can be continuously cooled, thus providing cooling.

[0048] like Figure 2 As shown, furthermore, the evaporator coil 23 is a serpentine tube 28. The serpentine tube 28 can increase the contact area with the water in the water tank body, thereby improving the heat exchange efficiency. Figure 5 As shown, the inner wall of the serpentine tube 28 is uniformly provided with multiple fins 29. The inside of the serpentine tube 28 contains refrigerant, which has a large heat transfer coefficient. Therefore, multiple fins 29 are provided on the inside of the tube 28 to enhance the heat transfer effect.

[0049] Furthermore, the water tank body is provided with multiple baffles 16, which are horizontally arranged on the inner wall of the water tank body. The multiple baffles 16 are located at the bends of the serpentine tube 28, that is, the baffles 16 are located between the S-bends. The baffles 16 are used to enhance the flow of water in the water tank body, enhance the heat exchange between water and refrigerant, and improve the heat exchange efficiency and effect.

[0050] Example 2

[0051] As a further improvement based on Example 1, such as Figure 2 As shown, the top of the water tank body is provided with a water inlet 26, through which water can be added to the water tank body. The bottom of the water tank body is provided with a drain outlet 20, through which water can be drained into the water tank body. Water can be added to the water tank body through the water inlet 26 or drained into the water tank body through the drain outlet 20 as needed, so that the water in the water tank body is at a suitable water level. The water tank body has a double-layer structure, including an outer cavity 18 and an inner cavity 19. The drain outlet 20, water inlet 26, medium water output end 22, medium water input end 24, refrigerant output end 15, and refrigerant input end 17 respectively penetrate the outer cavity 18 and the inner cavity 19. Water and refrigerant are located in the inner cavity 19. The inner wall of the outer cavity 18 and the outer wall of the inner cavity 19 are separated by a heat insulation layer 27, which can keep the water in the water tank body cold and reduce the loss of cold energy. The drain outlet 20 is equipped with a valve to control the opening and closing of the drain outlet 20. The water inlet 26 is normally open and is used to add water when the water in the water tank is insufficient. At the same time, excess water can also overflow from the water inlet 26.

[0052] Furthermore, the water inlet 26 is located near the medium water inlet 24, and a flow control valve 25 is installed inside the water tank. The flow control valve 25 is used to control the flow rate of the medium water inlet 24. By controlling the flow rate of the medium water inlet 24, the temperature of the water in the underfloor heating coil of the user terminal 13 can be regulated. That is, a large flow rate at the medium water inlet 24 results in a lower and faster temperature drop in the room of the user terminal 13, and vice versa. Figure 3As shown, in this embodiment, the flow control valve 25 includes: a filter bag 30, a float 34, a connecting rope 31, a hook 33, and a louver 32. A filter bag 30 is located at the bottom of the water inlet 26. The filter bag 30 is made of ordinary mesh and is located in the inner cavity 19. A float 34 is placed inside the filter bag 30 and can float on the water surface of the water tank body. One end of the connecting rope 31 is connected to the side wall of the float 34 and passes through the filter bag 30. A hook 33 is located on the inner wall of the inner cavity 19 and is on the same side as the medium water inlet 24. The connecting rope 31 passes through the hook 33 and acts as a fixed pulley to change the direction of the force on the connecting rope 31. A louver 32 is located on one side of the medium water inlet 24 in the inner cavity 19. The degree of blocking of the medium water inlet 24 is adjusted by controlling the opening and closing of the louver 32, thereby adjusting the flow rate of the medium water inlet 24. The end of the connecting rope 31 away from the float 34 is connected to one side of the louver 32. When the flow control valve 25 adjusts the flow rate at the medium water input end 24, the filter bag 30 is located at the lower end of the water inlet. When the water level is too high, the float 34 floats up and pulls the louver 32 through the connecting rope 31 to reduce the flow cross-sectional area, thereby reducing the flow rate. The float 34 has a density much smaller than water and has sufficient buoyancy to pull the louver 32. When the water level drops, the weight of the louver 32 and the impact of the circulating water allow the louver 32 to reset, thereby increasing the flow rate.

[0053] In this embodiment, the other structures are the same as in embodiment 1, except that optimizations have been made to embodiment 1.

[0054] Example 3

[0055] As a further improvement on Embodiment 2, an exhaust valve 14 is provided on the top of the water tank body. The exhaust valve 14 is located on the side opposite to the water inlet 26 and is connected to the inner cavity 19. During heat exchange between water and refrigerant, excessive pressure may occur in the water tank body. The exhaust valve 14 can release pressure in the water tank body, thereby maintaining pressure balance within the water tank body. Furthermore, the top of the inner wall of the inner cavity 19 is inclined, and the side of the top of the inner wall of the inner cavity 19 closest to the exhaust valve 14 is lower than the side of the top of the inner wall of the inner cavity 19 closest to the water inlet 26. Figure 3 The center is lower on the left and higher on the right, which facilitates the venting of the water tank body.

[0056] Furthermore, the top slope of the inner wall of the inner cavity 19 is 0.001-0.003. Designing the top slope of the inner wall of the inner cavity 19 within this range can achieve better drainage without affecting other movements within the water tank.

[0057] In this embodiment, the other structures are the same as in embodiment 2, except that optimizations have been made to embodiment 2.

[0058] Example 4

[0059] As a further improvement on Embodiment 2, the medium water output end 22 is provided with an anti-backflow structure 21 on one side of the inner cavity 19, meaning that the medium water output end 22 can only achieve unidirectional flow. This is also for better cooling. Figure 4 As shown, the anti-backflow structure 21 in this embodiment includes: a connecting pipe, a connecting ring 36, and a baffle 35. The connecting pipe is disposed within the inner cavity 19 and communicates with the medium water output end 22. The connecting pipe serves as a structural support for the connecting ring 36 and the baffle 35 and is a short pipe section. Two connecting rings 36 are symmetrically disposed on the inner wall of the connecting pipe. The baffle 35 is fitted inside the connecting pipe, and the side wall of the baffle 35 is hinged to one of the connecting rings 36. The other end of the baffle 35 is located on the side of the other connecting ring 36 near the medium water output end 22. The structure of the two connecting rings 36 and the baffle 35 is equivalent to a one-way valve. When the water in the water tank flows out through the medium water output end 22, the water flow can push the baffle 35 to rotate towards the side of the medium water output end 22. When the water flow is reversed, it will push the baffle 35 to rotate away from the side of the medium water output end 22. The connecting rings 36 that are not connected to the baffle 35 will block the baffle 35, so that the baffle 35 blocks the connecting pipe, thus preventing the water flow from flowing back into the water tank.

[0060] In this embodiment, the other structures are the same as in embodiment 2, except that optimizations have been made to embodiment 2.

[0061] The advantages of this invention are as follows: Firstly, the installation cost is low, as this device is based on existing underfloor heating systems. Secondly, unlike existing technologies, this device uses bottom-up heat exchange and cooling, with a vertical temperature difference of no more than 3℃ in the working area at 1.1m above the ground, resulting in greater comfort. Furthermore, the manifold's distribution side can connect to the underfloor heating coils at each user's end, enabling temperature control in each room and providing greater flexibility. In use, the device uses a heat exchanger to circulate water from the tank to the underfloor heating coils at the user's end via a circulating water pump. Simultaneously, the tank contains an evaporator coil filled with refrigerant, allowing heat exchange between the water and refrigerant, removing the cold energy from the refrigerant. The circulating water pump then pumps this cold water into the underfloor heating coils at the user's end for heat exchange, cooling the room. The water then circulates back into the tank to exchange heat with the refrigerant, continuing this cycle.

[0062] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A cooling system, characterized in that, include: The heat exchanger (11) includes a water tank body and an evaporator coil (23). The water tank body is used to hold water. A medium water output end (22) and a medium water input end (24) are provided on the side wall of the water tank body. The evaporator coil (23) is installed in the water tank body and contains refrigerant. The first power valve (3) has its medium water output end (22) connected to the input end of the first power valve (3); The output end of the first power valve (3) is connected to the input end of the circulating water pump (4); The output end of the second power valve (5) is connected to the input end of the circulating water pump (4); The manifold (9) has its output end connected to the input end of the second power valve (5), and the manifold (9) is used to connect to the underfloor heating coil of the user terminal (13). The third power valve (10) is connected to the input end of the third power valve (10) via the output end of the water distributor (9), and the output end of the third power valve (10) is connected to the medium water input end (24).

2. The cooling system according to claim 1, characterized in that, The water tank body has a refrigerant output terminal (15) and a refrigerant input terminal (17) on its side wall. The two ends of the evaporator coil (23) are respectively connected to the refrigerant output terminal (15) and the refrigerant input terminal (17), and the tank also includes: The compressor (12) has its refrigerant output terminal (15) connected to its input terminal; The condenser (1) is connected to the input end of the compressor (12); The expansion valve (2) is connected to the input end of the condenser (1), and the output end of the expansion valve (2) is connected to the refrigerant input end (17).

3. The cooling system according to claim 2, characterized in that, The evaporator coil (23) is a serpentine tube (28), and the inner wall of the serpentine tube (28) is uniformly provided with multiple ribs (29).

4. The cooling system according to claim 3, characterized in that, The water tank body is provided with multiple baffles (16), and the multiple baffles (16) are respectively located at the bends of the serpentine tube (28).

5. The cooling system according to claim 2, characterized in that, The top of the water tank body is provided with a water inlet (26), and the bottom of the water tank body is provided with a water outlet (20). The water tank body has a double-layer structure, including an outer cavity (18) and an inner cavity (19). The water outlet (20), water inlet (26), medium water output end (22), medium water input end (24), refrigerant output end (15), and refrigerant input end (17) respectively penetrate the outer cavity (18) and the inner cavity (19). The inner wall of the outer cavity (18) and the outer wall of the inner cavity (19) are separated by a heat insulation layer (27).

6. The cooling system according to claim 5, characterized in that, The water inlet (26) is located near the medium water inlet (24). A flow control valve (25) is provided inside the water tank. The flow control valve (25) is used to control the flow rate at the medium water inlet (24). The flow control valve (25) includes: A filter bag (30) is disposed at the bottom end of the water inlet (26); A float (34) is placed inside the filter bag (30); A connecting rope (31) is attached at one end to the side wall of the float (34); A hook (33) is provided on the inner wall of the inner cavity (19), and the connecting rope (31) is threaded through the hook (33); A louver (32) is provided on one side of the inner cavity (19) at the medium water input end (24), and one end of the connecting rope (31) away from the float (34) is connected to one side of the louver (32).

7. The cooling system according to claim 5, characterized in that, The top of the water tank body is provided with an exhaust valve (14). The exhaust valve (14) is located on the side away from the water inlet (26). The exhaust valve (14) is connected to the inner cavity (19). The top of the inner wall of the inner cavity (19) is inclined, and the side of the top of the inner wall of the inner cavity (19) near the exhaust valve (14) is lower than the side of the top of the inner wall of the inner cavity (19) near the water inlet (26), so as to facilitate the exhaust.

8. The cooling system according to claim 7, characterized in that, The slope of the top of the inner wall of the inner cavity (19) is 0.001-0.

003.

9. The cooling system according to claim 5, characterized in that, The medium water output end (22) is provided with an anti-backflow structure (21) on one side of the inner cavity (19), and the anti-backflow structure (21) includes: A connecting pipe is disposed in the inner cavity (19), and the connecting pipe is connected to the medium water output end (22); Two connecting rings (36) are symmetrically arranged on the inner wall of the connecting pipe; A baffle (35) is fitted inside the connecting pipe. One end of the baffle (35) is hinged to one of the connecting rings (36), and the other end of the baffle (35) is located on the side of the other connecting ring (36) near the medium water output end (22).

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