Fan cooling device

Abstract

The utility model relates to the technical field of fan cooling, in particular to a fan cooling device. Comprising an air duct, a fan combination unit is arranged in the air duct, the fan combination unit comprises a main fan and a redundant fan, and the main fan is connected with the redundant fan; and a filtering device is arranged at one end of an air outlet of the air duct. The main fan and the redundant fan which are standby for each other are arranged in the air duct, so that the main fan and the redundant fan can be directly switched in normal operation, and the operation modes of the fans can be switched; under the condition that the main fan breaks down, the redundant fan is started in an automatic interlocking mode, and stable operation of a process system is guaranteed; meanwhile, the filter device is arranged at the air outlet of the air duct, so that sundries can be prevented from falling into the air duct, and influence on system equipment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fan cooling, in particular to a fan cooling device. Background Art

[0002] With the rapid development of new energy wind power, photovoltaics, and energy storage, some emerging electronic devices are used on a large scale, especially frequency converters, rectifiers, inverters and other equipment used in the field of new energy, which have high requirements for the operating environment. Frequency converters, rectifiers, inverters, converters, energy storage units and other equipment generate a lot of heat during operation, and a good ventilation and cooling system is required to ensure the safe and stable operation of the equipment. In a conventional ventilation and cooling system, only one cooling fan is configured in a wind tube, and the cooling fan configuration has no redundancy. Once the cooling fan and its control circuit have problems and there is no backup, it cannot meet the normal operation of the main equipment such as frequency converters, rectifiers, inverters, converters, converters, energy storage units, etc. in the event of a cooling fan failure, thereby affecting the normal operation of the process system, causing huge economic losses to the enterprise, and also bringing huge pressure to the power grid structure and the safe and stable operation of the power grid. Therefore, the utility model is proposed. Utility Model Content

[0003] The utility model aims to provide a fan cooling device, which is equipped with two cooling fans. The two cooling fans serve as backup for each other. When one of the cooling fans fails, the other can be automatically started, thereby ensuring the safe and stable operation of the process system.

[0004] The utility model provides a fan cooling device, comprising a wind duct, wherein a fan assembly unit is arranged inside the wind duct, the fan assembly unit comprises a main fan and a redundant fan, and the main fan is connected to the redundant fan; a filter device is arranged at one end of the air outlet of the wind duct.

[0005] Furthermore, the main fan and the redundant fan have the same structure, both comprising a shell with open ends, a bracket provided inside the shell, a motor provided on the bracket, and a plurality of fan blades provided on the output shaft of the motor.

[0006] Furthermore, the housing is connected to the wind tube by bolts.

[0007] Furthermore, the filtering device comprises a supporting frame, a plurality of supporting legs are provided at the bottom of the supporting frame, and the supporting legs are bolted to the air duct; a filtering net is provided on the supporting frame.

[0008] Furthermore, mounting grooves are provided on opposite sides of the support frame, the filter screen is inserted into the mounting grooves, elastic rings are provided on opposite side walls of the filter screen outer frame, a column is provided on the top of the support frame, and the elastic ring is sleeved on the column.

[0009] Furthermore, an elastic pad is provided between the main fan and the redundant fan.

[0010] Furthermore, the main fan and the redundant fan are arranged vertically or horizontally.

[0011] Furthermore, an inspection opening is provided on the side wall of the wind tube, and a sealing door is provided at the inspection opening.

[0012] Furthermore, a buckle ring is rotatably connected to the side wall of the air duct, a limit block is provided on the sealing door, and the buckle ring is sleeved on the limit block.

[0013] Furthermore, a rotating shaft is rotatably connected to the sealing door, and the limiting block is fixedly connected to the rotating shaft.

[0014] In summary, compared with the prior art, the utility model has the following advantages:

[0015] The technical solution of the utility model is to set two main fans and redundant fans which serve as backup for each other in the wind duct, which can be directly switched during normal operation to invert the fan operation mode; in the event of a main fan failure, the redundant fan is automatically interlocked and started to ensure the stable operation of the process system; at the same time, a filtering device is set at the air outlet of the wind duct to prevent debris from falling into the wind duct and avoid affecting the system equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the fan cooling device in the embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure inside the air duct in the embodiment of the utility model;

[0019] Figure 3 A top view of the main fan in the embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the support frame in the embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the filter screen in the embodiment of the utility model.

[0022] Explanation of the reference numerals: 1-air duct, 2-main fan, 3-redundant fan, 201-housing, 202-motor, 203-blades, 204-bracket, 4-filtering device, 401-support frame, 402-installing slot, 403-filtering net, 404-elastic ring, 405-column, 406-supporting leg, 5-elastic pad, 6-sealing door, 601-limiting block, 7-buckle. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Example

[0027] A fan cooling device, such as Figure 1As shown, the duct 1 includes an air duct 1 with two open ends, a fan assembly unit is arranged inside the duct 1, and the fan assembly unit includes a main fan 2 and a redundant fan 3, which are arranged vertically or horizontally and connected in combination; a filter device 4 is installed at one end of the air outlet of the duct 1. It also includes a control system for controlling the operation of the main fan 2 and the redundant fan 3. The main fan 2 and the redundant fan 3 are interlocked. When one of the fans fails, the control system will start the other fan to run. The control system of the main fan 2 and the redundant fan 3 is the existing technology in this field.

[0028] In this embodiment, the main fan 2 and the redundant fan 3 are arranged vertically. Figure 2 The main fan 2 and the redundant fan 3 have the same structure, both of which include a square housing 201 with two open ends. Figure 3 As shown, a bracket 204 is welded to each of the four inner side walls of the housing 201, and the other end of the bracket 204 is bolted to the motor 202. The motor 202 can use a 380V or 220V power supply as needed, and a plurality of fan blades 203 are provided on the output shaft of the motor 202. The upper and lower ends of the housings of the main fan 2 and the redundant fan 3 are fixedly connected to the wind tube 1 by bolts to reduce the vibration of the fan and facilitate inspection and maintenance. The bottom end of the housing of the main fan 2 is fixed to the top end of the housing of the redundant fan 3 by bolts, and an elastic pad 5 is placed between the two to avoid resonance between the two fans during operation, which causes the vibration of the running fan to deteriorate, thereby affecting the safe and stable operation of the cooling system.

[0029] The filter device 4 includes a support frame 401 of a frame structure, such as Figure 4 As shown, a plurality of support legs 406 are fixed to the bottom of the support frame 401, and the support legs 406 are fixed to one end of the air outlet of the air duct 1 by bolts. Mounting grooves 402 are provided on opposite sides of the support frame 401, and the filter screen 403 is inserted into the mounting grooves 402. Figure 5 As shown, elastic rings 404 are fixed on two opposite side walls of the outer frame of the filter 403, and columns 405 are fixed at the four corners of the top of the support frame 401, and the elastic rings 404 are sleeved on the columns 405. In order to prevent the elastic ring 404 from falling off the column 405, a limit plate larger than the diameter of the column 405 is fixed on the top of the column 405. The filter device 4 is open on all sides, and the air outlet is unobstructed. The filter 403 on the top can prevent debris from falling into the air duct 1, avoiding the main fan 2, the redundant fan 3 and the system equipment from affecting it. The installation groove 402 is arranged to facilitate the removal of the filter 403, and to facilitate the cleaning or replacement of the filter 403. The elastic ring 404 arranged on the outer frame of the filter 403 makes the installation of the filter 403 more convenient and labor-saving, and also plays a fixing role on the filter 403.

[0030] An inspection port is provided on the side wall of the wind duct 1, and a sealing door 6 is rotatably connected to the inspection port. The inspection port is provided to facilitate the inspection of the main fan 2 and the redundant fan 3. There is no need to disassemble the entire wind duct 1 from the main equipment cabinet. It is only necessary to open the sealing door 6 and disassemble the fan that needs to be inspected or replaced. In order to ensure the sealing of the wind duct 1, sealing strips are provided on all sides of the sealing door 6. A rectangular buckle 7 is rotatably connected to the side wall of the wind duct 1, and a rotating shaft is rotatably connected to the sealing door 6. A limit block 601 is fixed on the rotating shaft. When in use, the buckle 7 is directly put on the limit block 601, and then the limit block 601 is rotated 180° to the left or right. The length of the limit block 601 after rotation is greater than the width of the buckle 7, and the buckle 7 is limited, thereby realizing the locking of the sealing door 6.

[0031] The system main equipment can be installed with multiple air ducts as needed. The air ducts are equipped with main fans and redundant fans. The shape of the air duct can be designed to be square or cylindrical, and the fan casing can be designed to be square or cylindrical according to the shape of the air duct.

[0032] The fan cooling device provided by the utility model has a main fan and a redundant fan as backup for each other. They can be directly switched during normal operation to change the operation mode of the cooling fan. In the event of a failure of the main fan, the redundant fan can be automatically interlocked and started to ensure the safe and stable operation of the main equipment. The two cooling fans are modularly designed and can be arranged vertically or horizontally. The installation method is simple and flexible, and the configuration of the cabinet (box) of the main equipment can be optimized. It has the advantages of flexible operation mode, safety and reliability, and is more conducive to achieving the goal of intelligent and smart sites.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fan cooling device, characterized in that: The invention comprises a wind tube (1), wherein a fan assembly unit is arranged inside the wind tube (1), wherein the fan assembly unit comprises a main fan (2) and a redundant fan (3), wherein the main fan (2) is connected to the redundant fan (3); a filter device (4) is arranged at one end of the air outlet of the wind tube (1); The main fan (2) and the redundant fan (3) have the same structure, both comprising a housing (201) with two open ends, a bracket (204) being provided inside the housing (201), a motor (202) being provided on the bracket (204), and a plurality of fan blades (203) being provided on the output shaft of the motor (202); The filtering device (4) comprises a supporting frame (401), a plurality of supporting legs (406) are provided at the bottom of the supporting frame (401), and the supporting legs (406) are bolted to the air duct (1); a filtering net (403) is provided on the supporting frame (401); The support frame (401) is provided with mounting grooves (402) on two opposite sides, the filter screen (403) is inserted into the mounting grooves (402), and elastic rings (404) are provided on two opposite side walls of the outer frame of the filter screen (403). A column (405) is provided on the top of the support frame (401), and the elastic ring (404) is sleeved on the column (405).

2. The fan cooling device according to claim 1, characterized in that: The housing (201) is bolted to the wind tube (1).

3. The fan cooling device according to claim 1, characterized in that: An elastic pad (5) is provided between the main fan (2) and the redundant fan (3).

4. The fan cooling device according to claim 1, characterized in that: The main fan (2) and the redundant fan (3) are arranged vertically or horizontally.

5. The fan cooling device according to claim 1, characterized in that: The side wall of the wind tube (1) is provided with an inspection opening, and a sealing door (6) is provided at the inspection opening.

6. The fan cooling device according to claim 5, characterized in that: A buckle ring (7) is rotatably connected to the side wall of the wind tube (1), a limit block (601) is provided on the sealing door (6), and the buckle ring (7) is sleeved on the limit block (601).

7. The fan cooling device according to claim 6, characterized in that: The sealing door (6) is rotatably connected to a rotating shaft, and the limiting block (601) is fixedly connected to the rotating shaft.

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