Integrated air-water cooling unit for air circulation cooling and heat dissipation in special cabinet for frequency conversion

Abstract

The utility model belongs to the technical field of frequency converter cooling and heat dissipation, and provides an integrated air-water cooling unit for air circulation cooling and heat dissipation in a special frequency conversion cabinet, which comprises an air-water cooling unit combined with a frequency converter cabinet and a fan cover covering the air-water cooling unit and the top of the frequency converter cabinet. The air-water cooling unit comprises a unit cabinet body, an air inlet formed in the top of the unit cabinet body, a fan arranged at the air inlet, cooling fins arranged in the unit cabinet body, a water inlet connector and a water outlet connector, wherein the water inlet connector and the water outlet connector are connected with the cooling fins. An air outlet communicated with the frequency converter cabinet is formed in the cabinet combination surface of the unit cabinet body, the cooling fins are obliquely arranged, the upper ends of the cooling fins incline rightwards and are close to the cabinet combination surface, and an air return channel corresponding to the air inlet is formed between the lower ends of the cooling fins and the left sides of the upper ends of the cooling fins. According to the utility model, the construction period of equipment installation and construction is short, and the construction workload is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency converter cooling and heat dissipation, and specifically relates to an integrated air-water cooling unit for air circulation cooling and heat dissipation in a special frequency conversion cabinet. Background Art

[0002] The air-water cooling system is one of the new cooling methods for high-voltage electrical equipment. Compared with the conventional closed air conditioning cooling method and forced air cooling method, it has significant advantages such as energy saving and simple maintenance. The working principle of the air-water cooling system is that the hot air coming out of the inverter is connected to the air-water cooling equipment with a fixed radiator through the air duct. Cold water (working pressure 0.2~0.5Mpa) passes through the radiator of the equipment. After the hot air passes through the heat sink, the heat is transferred to the cold water, and the cold air is blown out from the heat sink and sent back to the inverter room for circulation cooling. The heat is taken away by the circulating cooling water to achieve cooling and heat dissipation in the inverter control room.

[0003] In the prior art, the installation method of air-water cooling equipment requires that the entire equipment be installed outdoors, and an outdoor equipment installation foundation be made. At the same time, a large number of air ducts need to be made to connect with the inverter, and then the cooling water supply and return pipes need to be laid. Not only is the installation and construction workload large and the construction period long, but the existing air-water cooling equipment achieves cooling and cooling of the inverter by cooling the entire inverter control room (inverter room), and the cooling and heat dissipation efficiency of the inverter itself is poor. Utility Model Content

[0004] The utility model aims to provide an integrated air-water cooling unit with air circulation cooling and heat dissipation in a frequency conversion special cabinet, so as to solve the technical problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An integrated air-water cooling unit for air circulation cooling and heat dissipation in a special frequency conversion cabinet, comprising an air-water cooling unit arranged in parallel with a frequency converter cabinet, and a wind hood covering the air-water cooling unit and the top of the frequency converter cabinet; the air-water cooling unit comprises a unit cabinet, an air inlet arranged on the top of the unit cabinet, a fan arranged at the air inlet, a heat sink arranged inside the unit cabinet, and a water inlet interface and a water outlet interface connected to the heat sink; an air outlet connected to the frequency converter cabinet is arranged on the parallel cabinet surface of the unit cabinet, the heat sink is inclined and its upper end is inclined to the right and close to the parallel cabinet surface, and a return air channel corresponding to the air inlet is formed between the lower end and the left side of the upper end of the heat sink.

[0007] Furthermore, a mounting platform is provided on one side of the lower end of the unit cabinet, and the lower end of the heat sink is fixed on the mounting platform.

[0008] Furthermore, the mounting platform includes a straight plate portion and an inclined plate portion, one end of the straight plate portion is connected to one side of the unit cabinet, and the other end is connected to one end of the inclined plate portion, and the other end of the inclined plate portion is tilted upward relative to the straight plate portion and connected to the other side of the unit cabinet; the lower end of the heat sink is fixed on the inclined plate portion.

[0009] Furthermore, a waterproof shutter is provided on the inner side of the air outlet.

[0010] Furthermore, a water receiving tray is provided at the bottom of the unit cabinet and below the mounting platform, and one end of the water receiving tray is located directly below the waterproof louver.

[0011] Furthermore, a water tray drain port for draining water is provided on the water receiving tray.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The utility model adopts an air-water cooling unit and a frequency converter cabinet to be arranged in parallel. The heat generated by the frequency converter operation is transported to the air-water cooling unit through the hood on the top of the cabinet. Different from the common heat dissipation method of the prior art, the air-water cooling unit and the frequency converter are closely combined. The equipment is assembled and debugged before leaving the factory and is solidified. It can be installed and used on site, eliminating the need to use outdoor cooling and heat dissipation methods to make more air ducts to connect the frequency converter and cooling equipment, and then lay cooling water supply and return pipes. Not only is the construction period of equipment installation short, but the construction workload is also greatly reduced.

[0014] (2) The heat sink in the present invention adopts an inclined junction design, and an air outlet connected to the inverter cabinet is arranged on the cabinet surface of the unit cabinet. The hot air generated by the inverter operation and the cold air used to cool the inverter are internally circulated in the air-water cooling unit and the inverter cabinet. Compared with the prior art that focuses on the cooling and heat dissipation of the entire inverter room, the cooling and heat dissipation of the present invention is more focused, which not only improves the cooling and heat dissipation efficiency of the inverter cabinet, but also effectively avoids the influence of external moisture and dust on the operation of the inverter room. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the application state of the utility model.

[0016] Figure 2 It is a side schematic diagram of the application state of the utility model.

[0017] Figure 3 It is a schematic diagram of the external structure of the hollow water cooling unit of the utility model.

[0018] Figure 4 The internal structure of the hollow water cooling unit of the utility model is shown in FIG. Figure 1 .

[0019] Figure 5 The internal structure of the hollow water cooling unit of the utility model is shown in FIG. Figure 2 .

[0020] Figure 6 It is an internal side view of the hollow water cooling unit of the utility model.

[0021] The names corresponding to the reference numerals are as follows: 1-inverter cabinet, 2-air-water cooling unit, 3-air hood, 4-unit cabinet, 5-air inlet, 6-fan, 7-heat sink, 8-water inlet interface, 9-water outlet interface, 10-cabinet surface, 11-air outlet, 12-return air channel, 13-mounting platform, 14-waterproof shutter; 15-water tray; 16-water tray drain outlet;

[0022] 131-straight plate portion, 132-inclined plate portion. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to have a clearer understanding and knowledge of the present invention, the present invention is further described in detail in conjunction with the following embodiments. It should be noted that the specific embodiments described below are only used to explain the present invention and facilitate understanding. The technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the disclosure of this application shall have the usual meanings understood by persons with ordinary skills in the field to which the disclosure belongs. The words "include" or "comprise" and the like used in this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. The positional relationship words "upper", "lower", "left", "right", "front", "back", etc. are determined according to the layout direction of the drawings in the specification, and are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Example

[0026] like Figures 1 to 6As shown, this embodiment provides an integrated air-water cooling unit for air circulation cooling and heat dissipation in a special frequency conversion cabinet, which includes an air-water cooling unit arranged in parallel with the frequency converter cabinet, and a wind hood covering the air-water cooling unit and the top of the frequency converter cabinet, wherein the parallel cabinet arrangement refers to the air-water cooling unit and the frequency converter cabinet being arranged side by side, and the opposite end faces of the two are adjacent; the wind hood is a rectangular structure, the lower end of which is open and the inside is hollow, the top opening of the air-water cooling unit is set as an air inlet, and the top of the frequency converter cabinet is a hot air outlet, the wind hood covers the air inlet of the air-water cooling unit and the hot air outlet of the frequency converter cabinet, and the hot air generated by the operation of the frequency converter is introduced from the air inlet into the air-water cooling unit through the wind hood.

[0027] In this embodiment, the air-water cooling unit includes a unit cabinet, an air inlet arranged on the top of the unit cabinet, a fan arranged at the air inlet, a heat sink arranged inside the unit cabinet, and a water inlet interface and a water outlet interface connected to the heat sink; wherein the unit cabinet adopts a rectangular structure, and the air inlet on the top of the unit cabinet can be provided with a docking flange connected to the wind hood; the size of the unit cabinet can be set to match the size of the inverter cabinet to facilitate the cabinet-to-cabinet setting of the air-water cooling unit and the inverter cabinet, and an air outlet connected to the inverter cabinet is provided on the cabinet-to-cabinet surface of the unit cabinet, and the cabinet-to-cabinet surface refers to the end face of the unit cabinet close to the inverter cabinet after the unit cabinet and the inverter cabinet are cabinet-to-cabinet set. Through this setting, the hot air is cooled in the air-water cooling unit and becomes cold air, and then directly passes into the inverter cabinet from the air outlet, thereby realizing the internal circulation of refrigeration for the inverter cabinet. The air-water cooling unit is connected to an external power supply. At the same time, a control panel / control box can be configured to control the equipment (such as starting and stopping the equipment).

[0028] After the unit cabinet and the inverter cabinet are installed in parallel, the water inlet interface and the water outlet interface are located at the rear end face of the unit cabinet. The water inlet interface is used to connect the external cooling water supply, and the water outlet interface is used to connect the drainage. Cooling water is supplied to the heat sink through the water inlet interface to exchange heat with the hot air, and the cooling water after heat exchange is discharged out of the heat sink through the water outlet interface.

[0029] In this embodiment, the heat sink is tilted. Specifically, the upper end of the heat sink is tilted to the right and close to the cabinet surface. The installation structure of the heat sink is as follows: a mounting platform is set on one side of the lower end of the unit cabinet, and the mounting platform includes a straight plate part and an inclined plate part. One end of the straight plate part is connected to one side of the unit cabinet, and the other end is connected to one end of the inclined plate part. The other end of the inclined plate part is tilted upward relative to the straight plate part and connected to the other side of the unit cabinet. The lower end of the heat sink is fixed on the inclined plate part. Through the above arrangement, the return air channel corresponding to the air inlet is formed between the lower end and the left side of the upper end of the heat sink, and the right side is the air outlet channel.

[0030] In order to avoid the influence of water vapor, the present embodiment is provided with waterproof louvers on the inner side of the air outlet. The water vapor in the cold air can be separated by the waterproof louvers to prevent it from entering the inverter cabinet. On this basis, the present embodiment is provided with a water receiving tray at the bottom of the unit cabinet and below the mounting platform. One end of the water receiving tray is located directly below the waterproof louvers. At the same time, a water tray drain outlet for drainage is provided on the water receiving tray. Through the above arrangement, the water vapor in the cold air is separated by the waterproof louvers, and then falls into the water receiving tray, and finally discharged to the outside of the unit cabinet through the water tray drain outlet.

[0031] For practical application, the parameter configuration of the air-water cooling unit is as follows:

[0032] (1) Air inlet (hot air) of the air-water cooling unit is at the top, and the direction of the water inlet and outlet interface is: the left side connection (face to face when connected in parallel) or the connection at the back of the cabinet; (2) Unit foundation and installation: installed in parallel with the inverter cabinet, fixed with the bottom channel steel; (3) Heat sink material: the heat sink is made of high-quality 304 stainless steel to reduce the risk of cooling water leakage in the pipeline; (4) Cooling water requirements: PH-7 industrial water or other water sources after precipitation and filtration, the water should be free of impurities and corrosive chemicals (chloride ion content <250mg / ), water inlet temperature: 28 degrees, water pressure>0.2pa (within 0.5.pa); (5) Cooling effect: when the cooling water parameter requirements are met, the temperature inside the inverter cabinet is controlled within the range of +5℃ of the water inlet temperature when the inverter is running at full load.

[0033] The above is the preferred embodiment of the present invention. It should be noted that those skilled in the art can make several improvements without departing from the design principle and technical solution of the present invention, and these improvements should also be regarded as the protection scope of the present invention.

Claims

1. An integrated air-water cooling unit with air circulation cooling and heat dissipation in a frequency conversion cabinet, characterized in that: The invention comprises an air-water cooling unit (2) arranged in parallel with a frequency converter cabinet (1), and a wind shield (3) covering the air-water cooling unit (2) and the top of the frequency converter cabinet (1); the air-water cooling unit (2) comprises a unit cabinet (4), an air inlet (5) arranged at the top of the unit cabinet (4), a fan (6) arranged at the air inlet (5), a heat sink (7) arranged inside the unit cabinet (4), and a water inlet interface (8) and a water outlet interface (9) connected to the heat sink (7); an air outlet (11) connected to the frequency converter cabinet (1) is arranged on the parallel cabinet surface (10) of the unit cabinet (4); the heat sink (7) is arranged obliquely and its upper end is inclined to the right and close to the parallel cabinet surface (10); a return air channel (12) corresponding to the air inlet (5) is formed between the lower end and the left side of the upper end of the heat sink (7).

2. The integrated air-water cooling unit for cooling and heat dissipation in the frequency conversion cabinet according to claim 1 is characterized in that: A mounting platform (13) is provided on one side of the lower end of the unit cabinet (4), and the lower end of the heat sink (7) is fixed on the mounting platform (13).

3. The integrated air-water cooling unit for cooling and heat dissipation in the frequency conversion cabinet according to claim 2 is characterized in that: The mounting platform (13) comprises a straight plate portion (131) and an inclined plate portion (132); one end of the straight plate portion (131) is connected to one side of the unit cabinet (4), and the other end is connected to one end of the inclined plate portion (132); the other end of the inclined plate portion (132) is tilted upward relative to the straight plate portion (131) and is connected to the other side of the unit cabinet (4); the lower end of the heat sink (7) is fixed to the inclined plate portion (132).

4. The integrated air-water cooling unit for cooling and heat dissipation in the frequency conversion cabinet according to claim 3 is characterized in that: A waterproof shutter (14) is arranged on the inner side of the air outlet (11).

5. The integrated air-water cooling unit for cooling and heat dissipation by air circulation in the frequency conversion cabinet according to claim 4 is characterized in that: A water receiving tray (15) is provided at the bottom of the unit cabinet (4) and below the mounting platform (13), and one end of the water receiving tray (15) is located directly below the waterproof louver (14).

6. The integrated air-water cooling unit for cooling and heat dissipation in the frequency conversion cabinet according to claim 5 is characterized in that: The water receiving tray (15) is provided with a water tray drain port (16) for draining water.

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