Indirect evaporative cooling device

Abstract

The application relates to the technical field of air conditioning equipment, and discloses an indirect evaporative cooling device. The indirect evaporative cooling device provided by the application comprises a casing, an inner circulation air inlet is formed in the casing, the inner circulation air inlet is formed on one side of the casing, the casing has an inner cavity, the inner cavity comprises a return air shunt channel, the return air shunt channel is communicated with the inner circulation air inlet, the return air shunt channel comprises at least two air outlets, at least two heat exchange cores are arranged in the air outlets, and the inner circulation air enters the at least two heat exchange cores from the inner circulation air inlet. The indirect evaporative cooling device is provided with an inner circulation air inlet on one side of the casing, and when the indirect evaporative cooling device is installed, the side of the indirect evaporative cooling device which is not provided with an air inlet or an air outlet can be closely installed with other devices, so that the problem of large installation space required by the indirect evaporative cooling device is solved.

Description

Technical Field

[0001] This application belongs to the field of air conditioning equipment technology, and particularly relates to indirect evaporative cooling equipment. Background Technology

[0002] Indirect evaporative cooling systems utilize fresh air to cool return air through a heat exchange core, thereby reducing overall system energy consumption. As user demand for cooling capacity from indirect evaporative cooling systems continues to increase, dual-heat-exchange-core indirect evaporative cooling systems are gradually replacing traditional single-heat-exchange-core systems. However, existing dual-heat-exchange-core indirect evaporative cooling systems require multiple return air inlets and outlets on the casing, necessitating ample space for installation. This makes tight installation difficult and requires a larger installation area.

[0003] Therefore, improvements to existing technologies are necessary.

[0004] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0005] This application provides an indirect evaporative cooling device to solve the problem of large installation space required for indirect evaporative cooling devices.

[0006] In a first aspect, embodiments of this application provide an indirect evaporative cooling device, comprising:

[0007] The housing has an internal circulation air inlet on one side. The housing has an inner cavity, which includes a return air diversion channel that communicates with the internal circulation air inlet. The return air diversion channel includes at least two exhaust vents.

[0008] At least two heat exchange cores are respectively disposed at the exhaust port, so that the internal circulation air enters the at least two heat exchange cores respectively from the internal circulation air inlet.

[0009] In one possible implementation, the return air diversion channel includes a first guide channel, a second guide channel, and a connecting channel. The first guide channel connects at least one first heat exchange channel of the heat exchange core and the internal circulation air inlet. The connecting channel connects the first guide channel and the second guide channel. The second guide channel connects at least one first heat exchange channel of the heat exchange core.

[0010] In one possible implementation, the housing is further provided with an internal circulation air outlet, an external circulation air inlet, and an external circulation air outlet. The external circulation air inlet and the internal circulation air inlet are located on one side of the housing, and the external circulation air outlet is located on the top side of the housing.

[0011] The internal circulation air outlet is located on the same side as the internal circulation air inlet, or the internal circulation air outlet is located on the side of the casing opposite to the internal circulation air inlet.

[0012] In one possible implementation, the inner cavity further includes a return air conveying channel and a fresh air channel, the internal circulation air outlet is connected to the return air conveying channel, the first heat exchange channel of the at least two heat exchange cores is connected to the return air diversion channel and the return air conveying channel, and the second heat exchange channel of the at least two heat exchange cores is connected to the fresh air channel.

[0013] In one possible implementation, the indirect evaporative cooling device further includes a return air fan, which is fixedly mounted on the cavity wall of the inner cavity;

[0014] The return air fan is installed in the return air diversion channel, or the return air fan is installed in the return air conveying channel.

[0015] In one possible implementation, the indirect evaporative cooling device further includes a filter screen disposed within the return air distribution channel.

[0016] In one possible implementation, the indirect evaporative cooling device further includes a refrigeration mechanism comprising a compressor, an evaporator, a throttling device, and a condenser connected in sequence. The condenser is disposed in the fresh air duct, the evaporator is disposed in the return air conveying duct, and the compressor is disposed at any one of the return air diversion duct, the return air conveying duct, and the fresh air duct.

[0017] In one possible implementation, the indirect evaporative cooling device further includes a spray mechanism, which includes a spray tube bundle, a water pump, and a water receiving tray. The spray tube bundle is disposed at the top of the at least two heat exchange cores, the water receiving tray is disposed at the bottom of the at least two heat exchange cores, and the water pump is disposed inside the water receiving tray. The water pump is used to transport water from the water receiving tray to the spray system.

[0018] In one possible implementation, the spraying mechanism further includes a water collector disposed on the side of the spray tube bundle away from the heat exchange core, and the water collector is in communication with the spray tube bundle.

[0019] In one possible implementation, the top of the housing is provided with a fresh air fan and a bypass ventilation door, the fresh air fan is located at the external circulation air outlet, and the bypass ventilation door is connected to the fresh air duct.

[0020] Compared with the prior art, this application has the following beneficial effects:

[0021] The indirect evaporative cooling device provided in this application embodiment, by setting a return air diversion channel inside the casing, allows airflow entering from an internal circulation air inlet to flow to at least two heat exchange cores; by opening an internal circulation air inlet on one side of the casing, when installing the indirect evaporative cooling device, only the side with the internal circulation air inlet needs to reserve additional space, and the side of the indirect evaporative cooling device without an air inlet or outlet can be tightly installed with other equipment, reducing the installation space required for the indirect evaporative cooling device and solving the problem of large installation space required for indirect evaporative cooling devices. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0024] Figure 1 This is a schematic diagram of the first structure of the indirect evaporative cooling device provided in the embodiments of this application.

[0025] Figure 2 This is a top view of the indirect evaporative cooling device provided in an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of a second structure of the indirect evaporative cooling device provided in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of a third structure of the indirect evaporative cooling device provided in the embodiments of this application.

[0028] Figure 5 This is a schematic diagram of a fourth structure of the indirect evaporative cooling device provided in the embodiments of this application.

[0029] In the diagram: 1. Housing; 11. Inner cavity; 111. Return air diversion channel; 112. Return air conveying channel; 1111. First guide channel; 1112. Second guide channel; 1113. Connecting channel; 113. Fresh air channel; 12. Internal circulation air inlet; 13. Internal circulation air outlet; 14. External circulation air inlet; 15. External circulation air outlet; 2. Heat exchange core; 3. Return air fan; 4. Filter screen; 5. Fresh air fan; 6. Bypass ventilation door; 7. Refrigeration mechanism; 71. Compressor; 72. Evaporator; 73. Condenser; 8. Spray mechanism; 81. Water collector; 82. Spray tube bundle; 83. Water collection tray. Detailed Implementation

[0030] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0031] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0032] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0033] This application provides an indirect evaporative cooling device to solve the problem of large installation space required for indirect evaporative cooling devices. The following description will be provided in conjunction with the accompanying drawings.

[0034] Please see Figure 1 This application provides an indirect evaporative cooling device, including a housing 1 and at least two heat exchange cores 2. The housing 1 has an internal circulation air inlet 12 located on one side. The housing 1 has an inner cavity 11, which includes a return air diversion channel 111 connected to the internal circulation air inlet 12. The return air diversion channel 111 includes at least two exhaust outlets. At least two heat exchange cores 2 are respectively positioned at the exhaust outlets, allowing internal circulation air to enter the at least two heat exchange cores 2 from the internal circulation air inlet 12.

[0035] By setting a return air diversion channel 111 inside the casing 1, the airflow entering from an internal circulation air inlet 12 can flow to at least two heat exchange cores 2; by opening an internal circulation air inlet 12 on one side of the casing 1, when installing the indirect evaporative cooling equipment, only the side with the internal circulation air inlet 12 needs to be reserved for additional space, and the side of the indirect evaporative cooling equipment without an air inlet or outlet can be tightly installed with other equipment, reducing the installation space required for the indirect evaporative cooling equipment and solving the problem of the large installation space required for the indirect evaporative cooling equipment.

[0036] Please see Figure 1 In this embodiment, the number of heat exchange cores 2 is set to two, and the two heat exchange cores 2 are arranged at intervals within the inner cavity 11. Each heat exchange core 2 includes a first heat exchange channel and a second heat exchange channel, and the airflow flowing into the first heat exchange channel can exchange heat with the airflow flowing into the second heat exchange channel.

[0037] Please see Figure 1 and Figure 3 The housing 1 is also provided with an internal circulation air outlet 13, an external circulation air inlet 14, and an external circulation air outlet 15. The external circulation air inlet 14 is located on one side of the housing 1 in the width direction, the external circulation air outlet 15 is located on the top of the housing 1, and the internal circulation air inlet 12 is located on one side of the housing 1 in the length direction. In this embodiment, the internal circulation air outlet 13 is located on the same side as the internal circulation air inlet 12. In another embodiment of this application, the internal circulation air outlet 13 is located on the side of the housing 1 opposite to the internal circulation air inlet 12, so as to meet the air supply requirements of the indirect evaporative cooling equipment in different directions.

[0038] Please see Figure 1 The housing 1 has an inner cavity 11. Multiple partitions are installed on the cavity wall of the inner cavity 11, which divide the inner cavity 11 into a return air distribution channel 111, a return air conveying channel 112, and a fresh air channel 113. The return air distribution channel 111 is located above the return air conveying channel 112. The internal circulation air outlet 13 is connected to the return air conveying channel 112. The first heat exchange channel of the heat exchange core 2 is connected to the return air distribution channel 111 and the return air conveying channel. The second heat exchange channel of the heat exchange core 2 is connected to the fresh air channel 113, so that return air can flow into the first heat exchange channel and fresh air can flow into the second heat exchange channel, and return air and fresh air can exchange heat at the heat exchange core 2.

[0039] Please see Figure 1 and Figure 2The return air diversion channel 111 includes a first guide channel 1111, a second guide channel 1112, and a connecting channel 1113. The first guide channel 1111 connects the first heat exchange channel of one of the heat exchange cores 2 and the internal circulation air inlet 12. The connecting channel 1113 connects the first guide channel 1111 and the second guide channel 1112. The second guide channel 1112 connects the first heat exchange channel of the other heat exchange core 2. Return air enters the first guide channel 1111 from the internal circulation air inlet 12. Part of the return air flows into the first heat exchange channel of one of the heat exchange cores 2, and the other part flows into the first heat exchange channel of the other heat exchange core 2 through the connecting channel 1113 and the second guide channel 1112, thereby realizing the air supply from the single-sided internal circulation air inlet 12 to both heat exchange cores 2.

[0040] Please see Figure 1 and Figure 4 The indirect evaporative cooling equipment also includes a return air fan 3 and a filter screen 4. The return air fan 3 drives the return air to flow within the indirect evaporative cooling equipment, and the filter screen 4 filters the return air. The return air fan 3 is fixedly connected to the cavity wall of the inner cavity 11. In this embodiment, the return air fan 3 is located within the return air diversion channel 111 so that the return air diversion channel 111 and the return air conveying channel 112 are in a positive pressure driven state. In some embodiments of this application, the return air fan 3 is located within the return air conveying channel 112. Since the return air conveying channel 112 is located below the return air diversion channel 111, placing the return air fan 3 within the return air conveying channel 112 facilitates maintenance by personnel.

[0041] Please see Figure 1 and Figure 3 The filter screen 4 is disposed within the return air diversion channel 111 and is fixedly connected to the cavity wall of the inner cavity 11. Specifically, in this embodiment, the filter screen 4 is spaced apart from the internal circulation air inlet, so that the return air entering the two heat exchange cores 2 can be filtered by the filter screen 4. In some embodiments of this application, the number of filter screens 4 is set to two, with one filter screen 4 covering the air inlet of the first heat exchange channel of one heat exchange core 2 and the other filter screen 4 covering the air inlet of the first heat exchange channel of the other heat exchange core 2, which helps to increase the maintenance space of the return air fan 3.

[0042] Please see Figure 1 The indirect evaporative cooling equipment also includes a fresh air fan 5 and a bypass ventilation door 6. Both the fresh air fan 5 and the bypass ventilation door 6 are located on the top of the casing 1. The fresh air fan 5 is located at the external circulation air outlet 15, and the bypass ventilation door 6 is connected to the fresh air duct 113. This allows the airflow through the heat exchange core 2 to be reduced by opening the bypass ventilation door 6 when the outdoor temperature is low, thereby reducing the occurrence of icing in the heat exchange core 2.

[0043] Please see Figures 1-5 The indirect evaporative cooling device also includes a refrigeration mechanism 7 and a spray mechanism 8. The refrigeration mechanism 7 includes a compressor 71, an evaporator 72, a throttling device, and a condenser 73 connected in sequence. The condenser 73 is disposed in the fresh air duct 113, and the evaporator 72 is disposed in the return air conveying duct 112. Specifically, in this embodiment, the number of evaporators 72 is set to two. One evaporator 72 covers the air outlet of the first heat exchange channel of one of the heat exchange cores 2, and the other evaporator 72 covers the air outlet of the first heat exchange channel of the other heat exchange core 2. In some embodiments of this application, the number of evaporators 72 is set to one, and the evaporator 72 is disposed in the return air conveying duct 112 to facilitate maintenance of the evaporator 72 by personnel. The compressor 71 is disposed at any of the return air diversion duct 111, the return air conveying duct 112, and the fresh air duct 113 so that the airflow in the corresponding duct can cool the compressor 71.

[0044] Please see Figure 1 The indirect evaporative cooling equipment also includes a spray mechanism 8, which comprises a water collector 81, a spray tube bundle 82, a water pump, and a water receiving tray 83. The spray tube bundle 82 is located on top of at least two heat exchange cores 2, and the water receiving tray 83 is located at the bottom of at least two heat exchange cores 2. The water pump is located inside the water receiving tray 83 and is used to transport water from the water receiving tray 83 to the spray system. The water collector 81 is used to collect moisture from the fresh air flow. The water collector 81 is fixedly connected to the cavity wall of the chamber and is located on the side of the spray tube bundle 82 away from the heat exchange core 2. The water collector 81 is in communication with the spray tube bundle 82.

[0045] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0046] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An indirect evaporative cooling device, characterized in that, include: The housing (1) has an internal circulation air inlet (12) on it. The internal circulation air inlet (12) is located on one side of the housing (1). The housing (1) has an inner cavity (11). The inner cavity (11) includes a return air diversion channel (111). The return air diversion channel (111) is connected to the internal circulation air inlet (12). The return air diversion channel (111) includes at least two exhaust ports. At least two heat exchange cores (2) are respectively disposed at the exhaust port so that the internal circulation air enters the at least two heat exchange cores (2) from the internal circulation air inlet (12).

2. The indirect evaporative cooling device according to claim 1, characterized in that, The return air diversion channel (111) includes a first guide channel (1111), a second guide channel (1112), and a connecting channel (1113). The first guide channel (1111) connects at least one of the first heat exchange channels of the heat exchange core (2) and the internal circulation air inlet (12). The connecting channel (1113) connects the first guide channel (1111) and the second guide channel (1112). The second guide channel (1112) connects at least one of the first heat exchange channels of the heat exchange core (2).

3. The indirect evaporative cooling device according to claim 1, characterized in that, The housing (1) is also provided with an internal circulation air outlet (13), an external circulation air inlet (14) and an external circulation air outlet (15). The external circulation air inlet (14) and the internal circulation air inlet (12) are located on one side of the housing (1), and the external circulation air outlet (15) is located on the top side of the housing (1). The internal circulation air outlet (13) is located on the same side as the internal circulation air inlet (12), or the internal circulation air outlet (13) is located on the side of the housing (1) relative to the internal circulation air inlet (12).

4. The indirect evaporative cooling device according to claim 3, characterized in that, The inner cavity (11) further includes a return air conveying channel (112) and a fresh air channel (113). The internal circulation air outlet (13) is connected to the return air conveying channel (112). The first heat exchange channel of the at least two heat exchange cores (2) is connected to the return air diversion channel (111) and the return air conveying channel. The second heat exchange channel of the at least two heat exchange cores (2) is connected to the fresh air channel (113).

5. The indirect evaporative cooling device according to claim 4, characterized in that, The indirect evaporative cooling equipment also includes a return air fan (3), which is fixedly installed on the cavity wall of the inner cavity (11); The return air fan (3) is located in the return air diversion channel (111), or the return air fan (3) is located in the return air conveying channel (112).

6. The indirect evaporative cooling device according to claim 4, characterized in that, The indirect evaporative cooling device also includes a filter screen (4), which is disposed in the return air diversion channel (111).

7. The indirect evaporative cooling device according to claim 4, characterized in that, The indirect evaporative cooling device further includes a refrigeration mechanism (7), which includes a compressor (71), an evaporator (72), a throttling device, and a condenser (73) connected in sequence. The condenser (73) is located in the fresh air duct (113), the evaporator (72) is located in the return air conveying duct (112), and the compressor (71) is located at any one of the return air diversion duct (111), the return air conveying duct (112), and the fresh air duct (113).

8. The indirect evaporative cooling device according to claim 1, characterized in that, The indirect evaporative cooling device further includes a spray mechanism (8), which includes a spray tube bundle (82), a water pump, and a water receiving tray (83). The spray tube bundle (82) is located at the top of the at least two heat exchange cores (2), the water receiving tray (83) is located at the bottom of the at least two heat exchange cores (2), and the water pump is located inside the water receiving tray (83). The water pump is used to transport the water in the water receiving tray (83) to the spray system.

9. The indirect evaporative cooling device according to claim 8, characterized in that, The spraying mechanism (8) also includes a water collector (81), which is located on the side of the spray tube bundle (82) away from the heat exchange core (2) and is connected to the spray tube bundle (82).

10. The indirect evaporative cooling device according to claim 4, characterized in that, The top of the housing (1) is provided with a fresh air fan (5) and a bypass ventilation door (6). The fresh air fan (5) is located at the external circulation air outlet (15), and the bypass ventilation door (6) is connected to the fresh air channel (113).

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