Heat exchange device and refrigeration system

Abstract

The utility model discloses a heat exchange device and refrigerating system, heat exchange device includes heat exchange mechanism, and heat exchange mechanism includes shell, heat exchanger, wet membrane and fan module, wherein, the shell is equipped with ventilation passage, and the ventilation passage is equipped with air inlet and air outlet, heat exchanger sets up in ventilation passage, wet membrane sets up in air inlet, and fan module sets up in air outlet. In the flowing process, the airflow is cooled first by the wet membrane, and the cooled airflow cools the heat exchanger and the medium flowing in the heat exchanger. The wet membrane is located at the air inlet side of the heat exchanger, so the wet membrane can pre-cool the heat exchange airflow. Water only moistens the wet membrane and does not spray on the heat exchanger fins, so the fins are not corroded.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a heat exchange device and a refrigeration system. Background Technology

[0002] A condenser, also known as a heat exchanger, is a key component in an air conditioning system that facilitates heat exchange between the refrigeration system and the external environment. The condenser consists of coils, and an outdoor fan dissipates heat from the coils, thereby improving the efficiency of heat exchange between the condenser coils and the outside environment.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following problems: the heat exchanger has poor heat exchange effect, which affects the cooling effect of the refrigeration system. Utility Model Content

[0004] The present invention aims to at least solve the technical problem of poor heat exchange performance in existing heat exchangers. To this end, the present invention proposes a heat exchange device and a refrigeration system capable of providing better heat dissipation for the heat exchanger.

[0005] This application provides a heat exchange device, including a heat exchange mechanism, the heat exchange mechanism comprising:

[0006] The outer casing is provided with a ventilation channel, which has an air inlet and an air outlet;

[0007] The heat exchanger is installed within the ventilation duct;

[0008] A wet film is disposed at the air inlet;

[0009] A fan module is installed at the air outlet.

[0010] According to some embodiments of the present invention, the heat exchange mechanism further includes a spray module, which is disposed on the outer shell and located on top of the wet film or on the upper part of the heat exchanger, for supplying liquid cooling water to the wet film;

[0011] The heat exchange device also includes a circulating water tank, which is connected to the spray module and is used to supply liquid cooling water to the spray module.

[0012] According to some embodiments of the present invention, the heat exchange mechanism further includes a water receiving tray, which is disposed on the outer shell and located below the wet film, for receiving liquid cooling water dripping from the wet film; the water receiving tray is connected to the circulating water tank for transferring the received liquid cooling water back to the water tank.

[0013] According to some embodiments of the present invention, the outer shell is provided with air inlets on opposite sides, and the top of the outer shell is provided with an air outlet connected to the two air inlets. The two air inlets are respectively provided with heat exchangers, and the outer side of each heat exchanger is provided with a wet film. The fan module is provided on the top of the outer shell and located at the air outlet.

[0014] According to some embodiments of the present invention, the heat exchanger and the wet film are respectively inclinedly arranged on both sides of the outer shell, the heat exchanger and the wet film are arranged in parallel, the lower parts of the heat exchanger are arranged close to each other, and the upper parts of the heat exchanger are arranged far apart, so that a preset angle is formed between the two heat exchangers.

[0015] According to some embodiments of the present invention, the heat exchange device further includes a machine base, and multiple heat exchange mechanisms are provided. The multiple heat exchange mechanisms are sequentially arranged on the machine base, the tops of adjacent heat exchange mechanisms are connected, and a clearance space is formed between adjacent heat exchange mechanisms.

[0016] According to some embodiments of the present invention, the heat exchanger located in the clearance space is a central heat exchanger, the wet film is arranged parallel to the lower part of the central heat exchanger, and a sealing plate is laid on the upper part of the central heat exchanger.

[0017] According to some embodiments of the present invention, the heat exchange device includes a water level detection mechanism, which is used to detect whether the water level in the circulating water tank reaches a first water level and a second water level, wherein the first water level is lower than the second water level;

[0018] When the heat exchange mechanism needs to be turned on, if the liquid cooling water in the circulating water tank reaches the second water level, the circulating water tank is used to supply liquid cooling water to the spray module.

[0019] If the liquid cooling water in the circulating water tank drops to the first water level, an external water source is used to supply liquid cooling water to the circulating water tank.

[0020] According to some embodiments of the present invention, the water level detection mechanism is used to detect whether the water level in the circulating water tank has reached the third water level and the fourth water level, wherein the third water level is lower than the first water level and the fourth water level is higher than the second water level;

[0021] If the liquid cooling water in the circulating water tank drops to the third water level, the circulating water tank stops supplying liquid cooling water to the spray module;

[0022] If the liquid cooling water in the circulating water tank reaches the fourth water level, the external water source will stop supplying liquid cooling water to the circulating water tank.

[0023] According to some embodiments of the present invention, the water level detection mechanism includes:

[0024] The first sensor is used to detect whether the water level in the circulating water tank has reached the first water level;

[0025] The second sensor is used to detect whether the water level in the circulating water tank has reached the second water level;

[0026] The third sensor is used to detect whether the water level in the circulating water tank has reached the third water level;

[0027] The fourth sensor is used to detect whether the water level in the circulating water tank has reached the fourth water level.

[0028] According to some embodiments of the present invention, the circulating water tank is equipped with a float valve, which is used to block the water inlet of the circulating water tank when the water level in the circulating water tank reaches the fourth water level, so as to stop the external water source from supplying liquid cooling water to the circulating water tank.

[0029] According to some embodiments of this utility model, the heat exchange device includes an inlet pipe and a branch pipe. The inlet pipe is connected between an external water source and the circulating water tank. Both ends of the branch pipe are connected to the inlet pipe. The section of the inlet pipe between the two ends of the branch pipe is a control section. The heat exchange device also includes an electric valve and a manual valve. The electric valve is located in one of the control section and the branch pipe, and the manual valve is located in the other.

[0030] If the liquid cooling water in the circulating water tank drops to the first water level, the electric valve opens the water inlet pipe so that an external water source can be used to supply liquid cooling water to the circulating water tank.

[0031] If the liquid cooling water in the circulating water tank reaches the fourth water level, the electric valve closes the inlet pipe to stop the external water source from supplying liquid cooling water to the circulating water tank.

[0032] Secondly, embodiments of this application provide a refrigeration system, including the heat exchange device described above.

[0033] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: When the fan module is working, the external airflow enters the ventilation channel from the air inlet and is discharged from the air outlet. The wet film is positioned at the air inlet, and during the airflow process, the airflow preferentially passes through the wet film. The wet film can pre-cool the heat exchange airflow, thus the cooled airflow can better cool the heat exchanger when passing through it, thereby better cooling the medium in the heat exchanger. Furthermore, the wet film is positioned at the air inlet, making it convenient for personnel to clean or replace it without disassembling the heat exchanger.

[0034] In addition, in order to achieve cooling of the heat exchanger, this application does not use liquid cooling water to directly dissipate heat from the heat exchanger, so that the liquid cooling water will not be sprayed onto the fins of the heat exchanger, thereby avoiding corrosion of the fins. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the heat exchange device according to an embodiment of the present utility model;

[0036] Figure 2 This is a schematic diagram of the heat exchange mechanism in the heat exchange device according to an embodiment of the present utility model;

[0037] Figure 3 This is a cross-sectional structural diagram of the heat exchange mechanism according to an embodiment of the present utility model;

[0038] Figure 4 This is a schematic diagram of the liquid supply system of the heat exchange device according to an embodiment of the present invention.

[0039] The meanings of the reference numerals in the attached figures are as follows:

[0040] 100. Heat exchange mechanism; 110. Outer shell; 111. Ventilation duct; 112. Air inlet; 113. Air outlet; 114. Sealing plate; 120. Heat exchanger; 130. Wet film; 140. Fan module; 150. Spray module; 160. Water tray; 170. Clearance space; 200. Circulating water tank; 210. Water supply pipe; 220. Return pipe; 230. Water pump; 240. Float valve; 250. Overflow pipe; 260. Sewage pipe; 300. Water level detection mechanism; 310. First sensor; 320. Second sensor; 330. Third sensor; 340. Fourth sensor; 400. Machine base; 500. External water source; 600. Water inlet pipe; 610. Branch pipe; 620. Control section; 630. Manual valve; 640. Electric valve. Detailed Implementation

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, up, down, etc., indicating the directional or positional relationship, are based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0044] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0045] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The present invention will now be described in further detail with reference to the accompanying drawings.

[0047] Please see Figures 1 to 3 A heat exchange device provided in this embodiment of the present invention includes: a heat exchange mechanism 100, the heat exchange mechanism 100 including a shell 110, a heat exchanger 120, a wet film 130 and a fan module 140, wherein the shell 110 is provided with a ventilation channel 111, the ventilation channel 111 is provided with an air inlet 112 and an air outlet 113; the heat exchanger 120 is disposed in the ventilation channel 111; the wet film 130 is disposed in the air inlet 112; and the fan module 140 is disposed in the air outlet 113.

[0048] Specifically, when the fan module 140 is operating, external airflow enters the ventilation channel 111 through the air inlet 112 and exits through the air outlet 113. The wet membrane 130 is positioned at the air inlet 112. During airflow, the airflow preferentially passes through the wet membrane 130, which pre-cools the heat exchange airflow. Therefore, the cooled airflow can better cool the heat exchanger 120 when passing through it, thus better cooling the medium within the heat exchanger 120. Furthermore, the wet membrane 130's placement at the air inlet 112 facilitates cleaning or replacement by personnel without disassembling the heat exchanger 120.

[0049] In addition, in order to achieve cooling of the heat exchanger 120, this application does not use liquid cooling water to directly dissipate heat from the heat exchanger 120, so that the liquid cooling water will not spray onto the fins of the heat exchanger, thereby avoiding corrosion of the fins.

[0050] In some embodiments, please refer to Figures 1 to 3 The heat exchange mechanism 100 also includes a spray module 150, which is disposed on the outer shell 110 and located above the wet film 130, for supplying liquid cooling water to the wet film 130. Simultaneously, the heat exchange device also includes a circulating water tank 200, which is connected to the spray module 150 via a water supply pipe 210, for supplying liquid cooling water to the spray module 150.

[0051] In practical applications, a water pump 230 is installed on the water supply pipe 210 between the circulating water tank 200 and the spray module 150 (see reference). Figure 4 Therefore, under the action of water pump 230, circulating water tank 200 continuously supplies liquid-cooled water to spray module 150, and spray module 150 continuously supplies liquid-cooled water to wet film 130, thereby ensuring the humidity of wet film 130. As a result, when airflow passes through wet film 130, it is effectively cooled by wet film 130, thereby ensuring that heat exchanger 120 can be cooled better.

[0052] Furthermore, the heat exchange mechanism 100 also includes a water receiving tray 160, which is disposed on the outer shell 110 and located below the wet film 130. The water receiving tray 160 is elongated to receive liquid cooling water dripping from the wet film 130. Simultaneously, the water receiving tray 160 is connected to the circulating water tank 200 via a return pipe 220 to return the received liquid cooling water to the circulating water tank 200.

[0053] Specifically, when the spray module 150 continuously supplies liquid cooling water to the wet membrane 130, once the water content in the wet membrane 130 is saturated, the liquid cooling water in the wet membrane 130 drips from the bottom of the wet membrane 130 into the water receiving tray 160. After receiving the liquid cooling water, the water receiving tray 160 returns the liquid cooling water to the circulating water tank 200 through the return pipe 220, thereby realizing the recycling of liquid cooling water and avoiding waste of water resources.

[0054] In some embodiments, please refer to Figures 1 to 3 The outer casing 110 has air inlets 112 on opposite sides and an air outlet 113 on the top of the outer casing 110 that communicates with the two air inlets 112. Each of the two air inlets 112 is equipped with a heat exchanger 120, or rather, the two heat exchangers 120 are located close to the air inlets 112. Each heat exchanger 120 has a wet film 130 on its outer side, which is located at the air inlet 112. The fan module 140 is located on the top of the outer casing 110 and at the air outlet 113.

[0055] In practical applications, when the fan module 140 is operating, the airflow from both sides of the housing 110 enters the housing 110 through the air inlets 112 on both sides and exits from the same outlet 113. When the airflow enters the housing 110, it passes through the corresponding wet film 130 and heat exchanger 120, thus exchanging heat with each of the two heat exchangers 120. It can be understood that two heat exchangers 120 can be simultaneously installed within the housing 110 of the heat exchange mechanism 100. This arrangement fully utilizes the internal space of the housing 110, thereby ensuring the heat dissipation efficiency of the heat exchange mechanism 100.

[0056] Furthermore, heat exchangers 120 and wet films 130 are respectively inclinedly arranged on both sides of the outer casing 110. The heat exchangers 120 and wet films 130 are arranged in parallel. The lower parts of the heat exchangers 120 are arranged close to each other, and the upper parts of the heat exchangers 120 are arranged far apart from each other, so that a preset angle is formed between the two heat exchangers 120. Specifically, the two opposite sides of the outer casing 110 are defined as two mounting sides, and air inlets 112 are respectively disposed on the mounting sides. The two mounting sides are arranged in a V-shape, and the heat exchanger 120 and the wet film 130 are inclinedly disposed on the mounting sides. That is, the lower parts of the heat exchanger 120 are disposed close to each other, and the upper parts of the heat exchanger 120 are disposed far apart from each other. Thus, the two heat exchangers 120 are arranged in a V-shape, and a ventilation channel 111 that gradually expands from bottom to top is formed between the two heat exchangers 120. With this arrangement, after the airflow passes through the heat exchanger 120, it can flow smoothly to the air outlet 113 through the ventilation channel 111 and be discharged from the air outlet 113.

[0057] Furthermore, the heat exchange device also includes a machine base 400, with multiple heat exchange mechanisms 100 arranged sequentially on the machine base 400. The tops of adjacent heat exchange mechanisms 100 are connected, and a clearance space 170 is formed between adjacent heat exchange mechanisms 100. At the same time, the circulating water tank 200 is connected to the spray module 150 and the water receiving tray 160 of each heat exchange mechanism 100. Thus, the circulating water tank 200 simultaneously supplies liquid cooling water to the spray module 150 of each heat exchange mechanism 100 and receives the liquid cooling water received by the water receiving tray 160 of each heat exchange mechanism 100, thereby realizing the circulation of liquid cooling water.

[0058] It is understandable that, while the heat exchange mechanisms 100 are connected sequentially, adjacent heat exchange mechanisms 100...

[0059] A triangular clearance space 170 is reserved between the two sides, allowing external airflow to flow through the clearance space 170 to the air inlet 112, and then through the wet film 130 and heat exchanger 120 into the outer casing 110, thereby effectively dissipating heat from the heat exchanger 120. The spray modules 150 on both sides of the clearance space 170 are close together, and the two spray modules 150 can share a single water supply pipe 210, avoiding the need for a large number of pipes in the heat exchange device and thus reducing the difficulty of arranging the water supply pipe 210.

[0060] In some embodiments, the heat exchanger 120 located in the clearance space 170 is a central heat exchanger, with the wet film 130 arranged parallel to its lower portion and a sealing plate 114 laid on its upper portion. Specifically, the sealing plate 114 is provided on the upper portion of the side of the outer casing 110 near the clearance space 170, and the sealing plate 114 is used to cover the upper region of the heat exchanger 120. The wet film 130 does not cover the upper region of the heat exchanger 120; this region is covered by the sealing plate 114. Therefore, air in the clearance space 170 flows only from the region where the wet film 130 is located to the heat exchanger 120, and not from the location of the sealing plate 114 to the heat exchanger 120.

[0061] Understandably, the space at the top of the clearance space 170 is relatively narrow, and the wet film 130 near the clearance space 170 does not extend into this area, thereby effectively avoiding interference between the wet films 130 between the two heat exchange mechanisms 100. In some embodiments, please refer to... Figure 1 and Figure 4 The heat exchange device also includes a water level detection mechanism 300, which is used to detect whether the water level in the circulating water tank 200 has reached the first water level and the second water level. The first water level is set to be lower than the second water level. When the heat exchange mechanism 100 needs to be turned on, if the liquid cooling water in the circulating water tank 200 reaches the second water level, the circulating water tank 200 is used to supply liquid cooling water to the spray module 150. If the liquid cooling water in the circulating water tank 200 drops to the first water level, the external water source 500 is used to supply liquid cooling water to the circulating water tank 200.

[0062] Specifically, when heat exchanger 120 needs to dissipate heat, the water level in circulating water tank 200 needs to be checked. If the liquid cooling water in circulating water tank 200 does not reach the second water level, it indicates that the water level in circulating water tank 200 is insufficient and cannot stably supply liquid cooling water to multiple heat exchange mechanisms 100 for a long time. Therefore, external water source 500 supplies liquid cooling water to circulating water tank 200 until the liquid cooling water in circulating water tank 200 reaches the set height. At this point, the water level in circulating water tank 200 is sufficient, thus stably supplying liquid cooling water to multiple heat exchange mechanisms 100. When the liquid cooling water in circulating water tank 200 drops to the first water level, it indicates that liquid cooling water needs to be supplied to circulating water tank 200 in a timely manner to ensure that sufficient liquid cooling water can be supplied to spray module 150. Therefore, external water source 500 supplies liquid cooling water to the tank so that circulating water tank 200 can stably supply liquid cooling water to multiple heat exchange mechanisms 100.

[0063] Furthermore, the water level detection mechanism 300 is used to detect whether the water level in the circulating water tank 200 has reached the third water level (ultra-low water level) and the fourth water level. The first water level is set to be lower than the second water level (high water level), and the fourth water level (ultra-high water level) is set to be higher than the second water level (high water level). If the liquid cooling water in the circulating water tank 200 drops to the third water level, the control system displays a low water level alarm, and the circulating water pump 230 stops supplying liquid cooling water to the spray module 150. If the liquid cooling water in the circulating water tank 200 reaches the fourth water level, the control system displays a high water level alarm, and the external water source 500 stops supplying liquid cooling water to the circulating water tank 200.

[0064] Specifically, when the heat exchanger 120 is operating, if the liquid cooling water level in the circulating water tank 200 drops to the third level, it indicates that the water volume in the circulating water tank 200 is insufficient to supply liquid cooling water to the heat exchange mechanism 100, resulting in poor heat exchange performance of the heat exchanger 120. Therefore, the circulating water pump 230 stops supplying liquid cooling water to the spray module 150. When the external water source 500 replenishes liquid cooling water to the circulating water tank 200, if the liquid cooling water level in the circulating water tank 200 reaches the fourth level, it indicates that the liquid cooling water in the circulating water tank 200 has a sufficient quantity, and there is no need to continue replenishing the circulating water tank 200 with liquid cooling water, thus avoiding excessive replenishment of liquid cooling water to the circulating water tank 200.

[0065] To test whether the liquid cooling water in the circulating water tank 200 has reached the first, second, third, and fourth water levels, in one possible embodiment, the water level detection mechanism 300 includes a first sensor 310, a second sensor 320, a third sensor 330, and a fourth sensor 340. These sensors are all disposed on the inner wall of the circulating water tank 200 at different heights. Specifically, the first sensor 310 is located below the second sensor 320, the third sensor 330 is located below the first sensor 310, and the fourth sensor 340 is located above the second sensor 320. In application, the first sensor 310 detects whether the water level in the circulating water tank 200 has reached the first water level, the second sensor 320 detects whether the water level in the circulating water tank 200 has reached the second water level, the third sensor 330 detects whether the water level in the circulating water tank 200 has reached the third water level, and the fourth sensor 340 detects whether the water level in the circulating water tank 200 has reached the fourth water level.

[0066] Of course, in order to test whether the liquid cooling water in the circulating water tank 200 has reached the first, second, third and fourth water levels, other methods can also be used, such as float level gauges, electrode level sensors, ultrasonic level gauges, laser level gauges or level switches, to detect the water level in the circulating water tank 200.

[0067] In some embodiments, refer to Figure 4 The circulating water tank 200 is equipped with a float valve 240 or an electric valve on the external water supply pipe. When the water level in the circulating water tank 200 reaches or is about to reach the fourth water level, the float valve 240 blocks the water supply port of the circulating water tank 200, so that the external water source 500 stops supplying liquid cooling water to the circulating water tank 200.

[0068] Specifically, when the external water source 500 supplies excessive liquid cooling water to the circulating water tank 200, and the electric valve in the pipeline malfunctions, resulting in the external water source 500 supplying excessive liquid cooling water to the circulating water tank 200, the float of the float valve 240, as it rises with the liquid cooling water, blocks the water inlet of the circulating water tank 200, thereby stopping the external water source 500 from supplying liquid cooling water to the circulating water tank 200.

[0069] In some embodiments, refer to Figure 4 The circulating water tank 200 has a drain outlet at its bottom, which is connected to a drain pipe 260 for outward transport. The top of the circulating water tank 200 has an overflow outlet, which is connected to an overflow pipe 250 for outward transport. The outlet end of the overflow pipe 250 is connected to the outlet end of the drain pipe 260. Therefore, the sludge discharged from the circulating water tank 200 and the overflowing liquid cooling water are collected together for convenient subsequent unified treatment.

[0070] In some embodiments, refer to Figure 4 The heat exchange device includes an inlet pipe 600 and a branch pipe 610. One end of the inlet pipe 600 is connected to an external water source 500, and the other end is connected to a circulating water tank 200. Thus, the external water source 500 can supply liquid-cooled water to the inside of the circulating water tank 200 through the inlet pipe 600. Both ends of the branch pipe 610 are connected to the inlet pipe 600. The section of the inlet pipe 600 between the two ends of the branch pipe 610 is a control section 620, thus the control section 620 and the branch pipe 610 are connected in parallel. The heat exchange device also includes an electric valve 640 and a manual valve 630. The electric valve 640 is installed on one of the control section 620 and the branch pipe 610, and the manual valve 630 is installed on the other. For example, the manual valve 630 is installed on the control section 620, and the electric valve 640 is installed on the branch pipe 610. If the liquid cooling water in the circulating water tank 200 drops to the first water level, the electric valve 640 opens the inlet pipe 600 so that the external water source 500 can supply liquid cooling water to the circulating water tank 200; if the liquid cooling water in the circulating water tank 200 reaches the fourth water level, the electric valve 640 closes the inlet pipe 600 so that the external water source 500 stops supplying liquid cooling water to the circulating water tank 200.

[0071] Specifically, when heat exchanger 120 needs to dissipate heat, the water level in circulating water tank 200 needs to be checked. If the liquid cooling water in circulating water tank 200 does not reach the second water level, it indicates that the water level in circulating water tank 200 is insufficient and cannot stably supply liquid cooling water to multiple heat exchange mechanisms 100 for a long time. Therefore, electric valve 640 automatically opens, and external water source 500 supplies liquid cooling water to circulating water tank 200 through inlet pipe 600 until the liquid cooling water in circulating water tank 200 reaches the set height. At this point, the water level in circulating water tank 200 is sufficient, thus enabling a stable supply of liquid cooling water to multiple heat exchange mechanisms 100. When the liquid cooling water in the circulating water tank 200 drops to the first water level, it indicates that liquid cooling water needs to be supplied to the circulating water tank 200 in a timely manner to ensure that there is a sufficient supply of liquid cooling water to the spray module 150. Therefore, the electric valve 640 automatically opens, and the external water source 500 supplies liquid cooling water to the circulating water tank 200 through the water inlet pipe 600, so that the circulating water tank 200 can stably supply liquid cooling water to the multiple heat exchange mechanisms 100.

[0072] Furthermore, if the liquid cooling water level in the circulating water tank 200 drops to the third level during the operation of the heat exchanger 120, it indicates that the water volume in the circulating water tank 200 is insufficient to supply liquid cooling water to the heat exchange mechanism 100, resulting in poor heat exchange performance of the heat exchanger 120. Therefore, the circulating water pump 230 stops supplying liquid cooling water to the spray module 150; simultaneously, the electric valve 640 automatically opens, and the external water source 500 supplies liquid cooling water to the circulating water tank 200 through the inlet pipe 600. When the external water source 500 replenishes liquid cooling water to the circulating water tank 200 through the inlet pipe 600, if the liquid cooling water level in the circulating water tank 200 reaches the fourth level, it indicates that the liquid cooling water in the circulating water tank 200 has a sufficient quantity, and the electric valve 640 automatically closes, eliminating the need to continue replenishing liquid cooling water to the circulating water tank 200, thus avoiding excessive replenishment of liquid cooling water to the circulating water tank 200.

[0073] Additionally, if the electric valve 640 malfunctions, staff can observe the water level changes in the circulating water tank 20 to control the opening or closing of the manual valve 630. For example, when the liquid cooling water in the circulating water tank 200 drops to the first level, staff need to promptly open the manual valve 630 to allow the external water source 500 to supply liquid cooling water to the circulating water tank 200. When the liquid cooling water in the circulating water tank 20 rises to the fourth level, staff need to promptly close the manual valve 630 to stop the external water source 500 from supplying liquid cooling water to the circulating water tank 20. Of course, staff can flexibly open or close the manual valve 630 as needed to control the water storage capacity of the circulating water tank 200.

[0074] This application discloses a refrigeration system, including the heat exchange device described above.

[0075] Understandably, the refrigeration system employs the aforementioned heat exchange device. When the fan module 140 is operating, external airflow enters the ventilation channel 111 through the air inlet 112 and exits through the air outlet 113. The wet film 130 is positioned at the air inlet 112. During airflow, the airflow preferentially passes through the wet film 130, which pre-cools the heat exchange airflow. Therefore, the cooled airflow can effectively cool the heat exchanger 120 when passing through it, thus better cooling the medium within the heat exchanger 120. Furthermore, the wet film 130's placement at the air inlet 112 facilitates cleaning or replacement by personnel without requiring disassembly of the heat exchanger 120.

[0076] In addition, in order to achieve cooling of the heat exchanger 120, this application does not use liquid cooling water to directly dissipate heat from the heat exchanger 120, so that the liquid cooling water will not spray onto the fins of the heat exchanger, thereby avoiding corrosion of the fins.

[0077] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A heat exchange device, characterized by, Includes a heat exchange mechanism, the heat exchange mechanism comprising: The outer casing is provided with a ventilation channel, which has an air inlet and an air outlet; A heat exchanger is installed within the ventilation duct; A wet film is disposed at the air inlet; A fan module is installed at the air outlet.

2. A heat exchange device according to claim 1, wherein The heat exchange mechanism also includes a spray module, which is disposed on the outer shell and located on top of the wet film or on the upper part of the heat exchanger, for supplying liquid cooling water to the wet film; The heat exchange device also includes a circulating water tank, which is connected to the spray module and is used to supply liquid cooling water to the spray module.

3. A heat exchange device according to claim 2, wherein The heat exchange mechanism further includes a water receiving tray, which is disposed on the outer shell and located below the wet film, for receiving liquid cooling water dripping from the wet film; the water receiving tray is connected to the circulating water tank for transferring the received liquid cooling water back to the water tank.

4. A heat exchange device according to claim 1, wherein The outer casing has air inlets on opposite sides and an air outlet on top that communicates with the two air inlets. Each of the two air inlets is equipped with a heat exchanger, and a wet film is provided on the outer side of each heat exchanger. The fan module is located on the top of the outer casing and at the air outlet.

5. A heat exchange device according to claim 4, wherein The heat exchanger and the wet film are respectively inclinedly arranged on both sides of the outer shell. The heat exchanger and the wet film are arranged in parallel. The lower parts of the heat exchanger are arranged close to each other, and the upper parts of the heat exchanger are arranged far apart, so that a preset angle is formed between the two heat exchangers.

6. A heat exchange device according to claim 5, wherein The heat exchange device also includes a machine base, and multiple heat exchange mechanisms are provided. The multiple heat exchange mechanisms are arranged sequentially on the machine base, with the tops of adjacent heat exchange mechanisms connected together, and a clearance space formed between adjacent heat exchange mechanisms.

7. A heat exchange device according to claim 6, wherein The heat exchanger located in the clearance space is a central heat exchanger. The wet film is arranged parallel to the lower part of the central heat exchanger, and a sealing plate is laid on the upper part of the central heat exchanger.

8. A heat exchange device according to claim 2, wherein The heat exchange device includes a water level detection mechanism, which is used to detect whether the water level in the circulating water tank has reached a first water level and a second water level, wherein the first water level is set to be lower than the second water level. When the heat exchange mechanism needs to be turned on, if the liquid cooling water in the circulating water tank reaches the second water level, the circulating water tank is used to supply liquid cooling water to the spray module. If the liquid cooling water in the circulating water tank drops to the first water level, an external water source is used to supply liquid cooling water to the circulating water tank.

9. A heat exchange device according to claim 8, wherein The water level detection mechanism is used to detect whether the water level in the circulating water tank has reached the third water level and the fourth water level, wherein the third water level is lower than the first water level setting and the fourth water level is higher than the second water level setting; If the liquid cooling water in the circulating water tank drops to the third water level, the circulating water tank stops supplying liquid cooling water to the spray module; If the liquid cooling water in the circulating water tank reaches the fourth water level, the external water source will stop supplying liquid cooling water to the circulating water tank.

10. A heat exchange device according to claim 9, wherein The water level detection mechanism includes: The first sensor is used to detect whether the water level in the circulating water tank has reached the first water level; The second sensor is used to detect whether the water level in the circulating water tank has reached the second water level; The third sensor is used to detect whether the water level in the circulating water tank has reached the third water level; The fourth sensor is used to detect whether the water level in the circulating water tank has reached the fourth water level.

11. A heat exchange device according to claim 9, wherein The circulating water tank is equipped with a float valve, which is used to block the water inlet of the circulating water tank when the water level in the circulating water tank reaches the fourth water level, so as to stop the external water source from supplying liquid cooling water to the circulating water tank.

12. A heat exchange device according to any one of claims 9 to 11, characterised in that The heat exchange device includes an inlet pipe and a branch pipe. The inlet pipe is connected between an external water source and the circulating water tank. Both ends of the branch pipe are connected to the inlet pipe. The section of the inlet pipe between the two ends of the branch pipe is a control section. The heat exchange device also includes an electric valve and a manual valve. The electric valve is located in one of the control section and the branch pipe, and the manual valve is located in the other. If the liquid cooling water in the circulating water tank drops to the first water level, the electric valve opens the water inlet pipe so that an external water source can be used to supply liquid cooling water to the circulating water tank. If the liquid cooling water in the circulating water tank reaches the fourth water level, the electric valve closes the water inlet pipe to stop the external water source from supplying liquid cooling water to the circulating water tank.

13. A refrigeration system characterized by, The heat exchange device includes any one of claims 1 to 11.

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