Cooling device of frequency conversion control cabinet

Abstract

The utility model discloses a cooling device of a frequency conversion control cabinet, which comprises a cabinet body, the side wall of the cabinet body is rotatably connected with a cabinet door, the top of the cabinet body is communicated with a centrifugal air bellow, the top of the centrifugal air bellow is fixedly connected with a first servo motor, and the output end of the first servo motor is fixedly connected with a centrifugal fan. The top and the bottom of the centrifugal fan are both rotationally connected with fixing rings, the ends, away from the centrifugal fan, of the fixing rings are fixedly connected with the cabinet body and the centrifugal air bellow, and one side of the centrifugal fan communicates with an air outlet pipe. The utility model relates to the technical field of frequency conversion control cabinets, and solves the problems that in the prior art, due to frequency conversion work of a frequency conversion control cabinet, the temperature in the frequency conversion control cabinet is frequently changed, an air exhaust cooling system cannot adjust the air exhaust rate according to the temperature, and if heat generated during high-load work cannot be discharged in time, the air exhaust rate cannot be adjusted. Equipment is easy to damage, and resource waste is caused during low-load work.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency conversion control cabinets, in particular to a cooling device for a frequency conversion control cabinet. Background Art

[0002] The frequency conversion control cabinet is mainly used to adjust the operating frequency of the equipment, reduce energy loss, start the equipment smoothly, and reduce the damage to the motor caused by the large current generated when the equipment is directly started. It is widely used in industrial and agricultural production and various types of buildings. Water supply, drainage, fire protection, sprinkler pipe network pressurization and HVAC hot and cold water circulation and other occasions of automatic control. In the existing technology, the frequency conversion control cabinet causes the temperature inside the frequency conversion control cabinet to change frequently due to the frequency conversion operation. The exhaust cooling system cannot adjust the exhaust volume according to the temperature. If the heat generated during high-load operation cannot be discharged in time, it is easy to cause equipment damage, and it will cause resource waste during low-load operation. Summary of the Invention

[0003] In response to the deficiencies of the prior art, the utility model provides a cooling device for a frequency conversion control cabinet, which solves the problem in the prior art that the temperature inside the frequency conversion control cabinet often changes due to the frequency conversion operation, and the exhaust cooling system cannot adjust the exhaust volume according to the temperature. If the heat generated during high-load operation cannot be discharged in time, it is easy to cause equipment damage, and it will cause waste of resources during low-load operation.

[0004] To achieve the above-mentioned object, the utility model is implemented through the following technical solutions: a cooling device for a frequency conversion control cabinet, comprising a cabinet body, the side walls of the cabinet body are rotatably connected to the cabinet door, the top of the cabinet body is connected to a centrifugal bellows, the top of the centrifugal bellows is fixedly connected to a first servo motor, the output end of the first servo motor is fixedly connected to a centrifugal fan, the top and bottom of the centrifugal fan are rotatably connected to a fixing ring, one end of the fixing ring away from the centrifugal fan is fixedly connected to the cabinet body and the centrifugal bellows respectively, one side of the centrifugal fan is connected to an air outlet duct, air inlets are equidistantly provided on both sides of the cabinet body, the bottom of the cabinet body is fixedly connected to a bottom plate, both sides of the bottom of the bottom plate are connected to a cylinder, one end of the cylinder away from the bottom plate is fixedly connected to a fixing rod, both ends of the fixing rod are fixedly connected to the cabinet body, exhaust fan blades are arranged inside the cylinder, the bottom of the exhaust fan blades is fixedly connected to a second servo motor, the second servo motor is fixedly connected to the fixing rod, and exhaust outlets are provided on both sides and bottom of the cabinet body at the second servo motor.

[0005] Preferably, a controller is fixedly connected to the top inner wall of the cabinet, a temperature sensor is fixedly connected to the top inner wall of the cabinet, a control panel is fixedly connected to the outer wall of the cabinet door, and the controller is electrically connected to the first servo motor, the second servo motor, the temperature sensor and the control panel respectively.

[0006] Preferably, a first filter is provided on the inner wall of the cabinet body close to the air inlet, a baffle is provided on the outer wall of the first filter body away from the air inlet, the first filter screen and the baffle are both fixedly connected to the cabinet body, an isolation net is fixedly connected to the end of the air outlet duct away from the centrifugal fan, and the bottom plate is located above the exhaust fan blades and is fixedly connected to a second filter screen.

[0007] Preferably, the cabinet is located below the centrifugal fan and is equidistantly rotatably connected to a limit rod, and an outer wall of the limit rod is cooperatively connected to a baffle.

[0008] Preferably, both sides of the interior of the cabinet are fixedly connected with clamping plates, the outer walls of the clamping plates are fixedly connected with fixing plates at equal distances, and a door lock is provided on the side of the cabinet door away from the cabinet.

[0009] The utility model provides a cooling device for a variable frequency control cabinet. The device has the following beneficial effects: The cooling device for the variable frequency control cabinet, through the coordination of the cabinet body, centrifugal bellows, first servo motor, centrifugal fan, fixing ring, air outlet duct, air inlet, bottom plate, fixing rod, cylinder, second servo motor, exhaust fan blades, and exhaust outlet, enables the exhaust cooling system to adjust the exhaust volume according to the temperature inside the variable frequency control cabinet, thereby avoiding resource waste, preventing equipment damage caused by excessive temperature, and extending the service life of the equipment.

[0010] Through the cooperation between the first servo motor, the second servo motor, the temperature sensor, the controller and the control panel, the temperature in the frequency conversion control cabinet is automatically controlled, so that the temperature in the frequency conversion control cabinet is maintained within a certain range, which is convenient for users to use and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0013] Figure 3 for Figure 1 A schematic diagram of the structure of the first servo motor, centrifugal fan and centrifugal bellows;

[0014] Figure 4 for Figure 1 Schematic diagram of the structure of the second servo motor, exhaust fan blades and base plate;

[0015] Figure 5 for Figure 1 Schematic diagram of the structure of the temperature sensor, air outlet pipe and bracket.

[0016] In the figure: 1. cabinet body, 2. card plate, 3. fixing plate, 4. centrifugal bellows, 5. first servo motor, 6. centrifugal fan, 7. fixing ring, 8. air outlet duct, 9. isolation net, 10. limiting rod, 11. baffle, 12. air inlet, 13. first filter, 14. baffle, 15. bottom plate, 16. second filter, 17. fixing rod, 18. cylinder, 19. second servo motor, 20. exhaust fan blades, 21. exhaust outlet, 22. temperature sensor, 23. controller, 24. cabinet door, 25. control panel, 26. door lock. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the prior art, the temperature inside the frequency conversion control cabinet often changes due to the frequency conversion operation. The exhaust cooling system cannot adjust the exhaust volume according to the temperature. If the heat generated during high-load operation cannot be discharged in time, it is easy to cause equipment damage, and it will cause waste of resources during low-load operation.

[0019] In view of this, the present invention provides a cooling device for a frequency conversion control cabinet. Through the coordination among the cabinet body, centrifugal bellows, a first servo motor, a centrifugal fan, a fixed ring, an air outlet pipe, an air inlet, a bottom plate, a fixed rod, a cylinder, a second servo motor, exhaust fan blades and an exhaust outlet, when the frequency conversion control cabinet is working at a low load, the second servo motor is controlled to exhaust air, thereby reducing power consumption. When the frequency conversion control cabinet is working at a high load, the first servo motor is controlled to increase exhaust air, thereby improving the air circulation of the frequency conversion control cabinet, so that the exhaust cooling system adjusts the exhaust volume according to the temperature in the frequency conversion control cabinet, thereby avoiding waste of resources, and at the same time avoiding damage to equipment due to excessive temperature, thereby affecting the service life of the equipment.

[0020] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0021] Depend on Figure 1-5It can be seen that a cooling device for a variable frequency control cabinet includes a cabinet body 1, the interior of the cabinet body 1 is used to carry the variable frequency control component, the side wall of the cabinet body 1 is rotatably connected to a cabinet door 24, the cabinet door 24 is used to close the variable frequency control cabinet, the top of the cabinet body 1 is connected to a centrifugal bellows 4, the top of the centrifugal bellows 4 is fixedly connected to a first servo motor 5, the output end of the first servo motor 5 is fixedly connected to a centrifugal fan 6, the top and bottom of the centrifugal fan 6 are rotatably connected to a fixing ring 7, the end of the fixing ring 7 away from the centrifugal fan 6 is fixedly connected to the cabinet body 1 and the centrifugal bellows 4 respectively, and one side of the centrifugal fan 6 is connected to An air outlet duct 8 is provided, and air inlets 12 are equidistantly provided on both sides of the cabinet 1. A bottom plate 15 is fixedly connected to the bottom of the cabinet 1, and both sides of the bottom of the bottom plate 15 are connected to a cylinder 18. One end of the cylinder 18 away from the bottom plate 15 is fixedly connected to a fixing rod 17. Both ends of the fixing rod 17 are fixedly connected to the cabinet 1. An exhaust fan blade 20 is provided inside the cylinder 18. The bottom of the exhaust fan blade 20 is fixedly connected to a second servo motor 19. The second servo motor 19 is fixedly connected to the fixing rod 17. Exhaust outlets 21 are provided on both sides and the bottom of the cabinet 1 at the second servo motor 19.

[0022] During the specific implementation process, it is worth noting that the interior of the cabinet 1 is used to carry the frequency conversion control component, the cabinet door 24 is used to close the frequency conversion control cabinet, and the air inlet 12 is used for air circulation of the frequency conversion control cabinet. Through the cooperation between the cabinet 1, the centrifugal bellows 4, the first servo motor 5, the centrifugal fan 6, the fixing ring 7, the air outlet duct 8 and the air inlet 12, the first servo motor 5 drives the centrifugal fan 6 to rotate at a high speed. Under the action of the centrifugal fan 6, air enters the interior of the frequency conversion control cabinet from the air inlet 12, and then enters the centrifugal bellows 4 from the interior of the frequency conversion control cabinet and is discharged from the air outlet 8, thereby replacing the air inside the frequency conversion control cabinet from the top, thereby reducing the temperature inside the frequency conversion control cabinet. Through the cooperation between the air inlet 12, the bottom plate 15, the fixing rod 17, the cylinder 18, the second servo motor 19, the exhaust fan blades 20 and the exhaust port 21, the second servo motor 19 drives the exhaust fan blades 20 to rotate at a high speed, and the air enters the frequency conversion control cabinet from the air inlet 12 The air inside the frequency conversion control cabinet enters the cylinder 18 under the action of the exhaust fan blades 20 and is discharged from the exhaust port 21, so as to replace the air inside the frequency conversion control cabinet from the bottom, thereby reducing the temperature inside the frequency conversion control cabinet. Through the cooperation among the cabinet body 1, centrifugal bellows 4, the first servo motor 5, the centrifugal fan 6, the fixing ring 7, the air outlet duct 8, the air inlet 12, the bottom plate 15, the fixing rod 17, the cylinder 18, the second servo motor 19, the exhaust fan blades 20 and the exhaust port 21, when the frequency conversion control cabinet is working at a low load, the second servo motor 19 is controlled to exhaust air to reduce power consumption. When the frequency conversion control cabinet is working at a high load, the first servo motor 5 is controlled to increase exhaust air, thereby improving the air circulation of the frequency conversion control cabinet and quickly reducing the temperature inside the frequency conversion control cabinet. This avoids damage to the equipment due to excessive temperature and affects the service life of the equipment. The specific models of the first servo motor 5 and the second servo motor 19 are not limited and can meet the use requirements.

[0023] Furthermore, a controller 23 is fixedly connected to the top inner wall of the cabinet 1, and a temperature sensor 22 is fixedly connected to the top inner wall of the cabinet 1. The temperature sensor 22 is used to sense the temperature inside the frequency conversion control cabinet. The outer wall of the cabinet door 24 is fixedly connected to a control panel 25. The control panel 25 is used to display the temperature and output control commands. The controller 23 is electrically connected to the first servo motor 5, the second servo motor 19, the temperature sensor 22 and the control panel 25 respectively.

[0024] During the specific implementation process, it is worth noting that the temperature sensor 22 is used to sense the temperature inside the frequency conversion control cabinet, and the control panel 25 is used to display the temperature and output control commands. Through the cooperation between the first servo motor 5, the second servo motor 19, the temperature sensor 22, the controller 23 and the control panel 25, the temperature sensor 22 continuously transmits the temperature signal to the controller 23, and outputs the control command to the controller 23 through the control panel 25. When the temperature inside the frequency conversion control cabinet is low, the controller 23 controls one or two second servo motors 19 to exhaust. When the frequency conversion control cabinet is running at high load and the internal temperature reaches a preset temperature, the controller 23 controls the first servo motor 5 to increase the air circulation. After the internal temperature drops, the controller 23 stops the first servo motor 5 from working, thereby realizing automatic control of the temperature inside the frequency conversion control cabinet, so that the temperature inside the frequency conversion control cabinet is maintained within a certain range. The specific models of the temperature sensor 22, the controller 23 and the control panel 25 are not limited, and can meet the use requirements.

[0025] Furthermore, a first filter 13 is provided on the inner wall of the cabinet 1 near the air inlet 12, and a baffle 14 is provided on the outer wall of the first filter 13 away from the air inlet 12. The first filter 13 and the baffle 14 are both fixedly connected to the cabinet 1. An isolation net 9 is fixedly connected to the end of the air outlet duct 8 away from the centrifugal fan 6. A second filter 16 is fixedly connected to the bottom plate 15 above the exhaust fan blades 20.

[0026] During the specific implementation process, it is worth noting that when exhausting and cooling the frequency conversion control cabinet, the first filter 13 is used to filter dust or other debris entering through the air inlet 12 to prevent excessive dust from entering the frequency conversion control cabinet and affecting the normal operation of the equipment. The baffle 14 is used to fix the first filter 13, and the isolation net 9 and the second filter 16 are used to block foreign matter from entering the frequency conversion control cabinet through the exhaust equipment to prevent animals such as flying insects or rodents from entering the frequency conversion control cabinet and causing damage to the equipment.

[0027] Furthermore, the cabinet 1 is equidistantly rotatably connected to a limit rod 10 below the centrifugal fan 6, and a baffle 11 is cooperatively connected to the outer wall of the limit rod 10;

[0028] In the specific implementation process, it is worth noting that the cooperation between the limit rod 10 and the baffle 11 prevents the connection wires in the frequency conversion control cabinet from loosening due to suction when the centrifugal fan 6 rotates, thereby affecting the normal use of the equipment;

[0029] Furthermore, the inner sides of the cabinet body 1 are fixedly connected with a card plate 2, the outer wall of the card plate 2 is fixedly connected with a fixed plate 3 at equal distances, and the side of the cabinet door 24 away from the cabinet body 1 is provided with a door lock 26;

[0030] In the specific implementation process, it is worth noting that the card plate 2 is used to fix the fixing plate 3, and the fixing plate 3 is used to fix the frequency conversion control device. An appropriate number of fixing plates 3 can be installed on the card plate 2 according to the use requirements, and the door lock 26 is used to open and fix the cabinet door 24;

[0031] Specifically, when using the cooling device of the variable frequency control cabinet, an appropriate amount of fixing plates 3 are installed on the card plate 2 according to the use requirements, the variable frequency control device is installed on the fixing plate 3, and the operating temperature of the first servo motor 5 and the second servo motor 19 is set through the control panel 25. The temperature sensor 22 transmits the temperature signal to the controller 23, and the controller 23 then feeds back to the control panel 25. When the variable frequency control cabinet is working at a low load, the controller 23 controls a second servo motor 19 to drive the exhaust fan blades 20 to rotate according to the temperature feedback from the temperature sensor 22, and the air passes through the air inlet 12 through the first servo motor 19. A filter 13 and a baffle 14 enter the frequency conversion control cabinet, and the air in the frequency conversion control cabinet passes through the second filter 16 and enters the cylinder 18, and then is discharged from the frequency conversion control cabinet through the exhaust port 21 by the cylinder 18, thereby realizing the exhaust cooling of the frequency conversion control cabinet. When the workload of the frequency conversion control cabinet increases, the temperature in the frequency conversion control cabinet rises. When it reaches the preset temperature set by the control panel 25, the controller 23 controls the two second servo motors 19 to rotate simultaneously to increase the exhaust volume. When the frequency conversion control cabinet is working at a high load, when the temperature in the frequency conversion control cabinet reaches the preset maximum value, the controller 23 controls the second servo motors 19 to rotate simultaneously to increase the exhaust volume. A servo motor 5 rotates, and the air in the frequency conversion control cabinet enters the centrifugal bellows 4 from the top of the frequency conversion control cabinet under the action of the centrifugal fan 6, and is then discharged from the air outlet 8, further increasing the exhaust volume. After the temperature in the frequency conversion control cabinet drops to a preset value, the controller 23 stops the operation of the first servo motor 5 and the second servo motor 19 in sequence, reducing the exhaust volume and avoiding resource waste. The automatic control of the temperature in the frequency conversion control cabinet is achieved, so that the temperature in the frequency conversion control cabinet is kept within a certain range. Through the cabinet body 1, centrifugal bellows 4, the first servo motor 5, the centrifugal fan 6, the fixing ring 7, The coordination between the air outlet duct 8, the air inlet 12, the base plate 15, the fixing rod 17, the cylinder 18, the second servo motor 19, the exhaust fan blades 20 and the exhaust outlet 21 is such that when the frequency conversion control cabinet is working at a low load, the second servo motor 19 is controlled to exhaust air, thereby reducing power consumption. When the frequency conversion control cabinet is working at a high load, the first servo motor 5 is controlled to increase exhaust air, thereby improving the air circulation of the frequency conversion control cabinet, and enabling the exhaust cooling system to adjust the exhaust volume according to the temperature inside the frequency conversion control cabinet, thereby avoiding waste of resources and at the same time avoiding damage to the equipment due to excessively high temperature, thereby affecting the service life of the equipment.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling device for a variable frequency control cabinet, comprising a cabinet body (1), characterized in that: The side wall of the cabinet (1) is rotatably connected to a cabinet door (24), the top of the cabinet (1) is connected to a centrifugal bellows (4), the top of the centrifugal bellows (4) is fixedly connected to a first servo motor (5), the output end of the first servo motor (5) is fixedly connected to a centrifugal fan (6), the top and bottom of the centrifugal fan (6) are rotatably connected to a fixing ring (7), the end of the fixing ring (7) away from the centrifugal fan (6) is fixedly connected to the cabinet (1) and the centrifugal bellows (4), one side of the centrifugal fan (6) is connected to an air outlet pipe (8), and air inlets (12) are equidistantly provided on both sides of the cabinet (1). The bottom of the cabinet (1) is fixedly connected to a bottom plate (15), and both sides of the bottom of the bottom plate (15) are connected to a cylinder (18), and one end of the cylinder (18) away from the bottom plate (15) is fixedly connected to a fixing rod (17), and both ends of the fixing rod (17) are fixedly connected to the cabinet (1). An exhaust fan blade (20) is provided inside the cylinder (18), and the bottom of the exhaust fan blade (20) is fixedly connected to a second servo motor (19), and the second servo motor (19) is fixedly connected to the fixing rod (17). The cabinet (1) is provided with exhaust ports (21) on both sides and the bottom of the second servo motor (19).

2. The cooling device for a frequency conversion control cabinet according to claim 1, characterized in that: A controller (23) is fixedly connected to the inner wall of the top of the cabinet (1), a temperature sensor (22) is fixedly connected to the inner wall of the top of the cabinet (1), and a control panel (25) is fixedly connected to the outer wall of the cabinet door (24). The controller (23) is electrically connected to the first servo motor (5), the second servo motor (19), the temperature sensor (22) and the control panel (25), respectively.

3. The cooling device for a frequency conversion control cabinet according to claim 1, characterized in that: A first filter (13) is provided on the inner wall of the cabinet (1) near the air inlet (12), and a baffle (14) is provided on the outer wall of the first filter (13) away from the air inlet (12). The first filter (13) and the baffle (14) are both fixedly connected to the cabinet (1). An isolation net (9) is fixedly connected to one end of the air outlet duct (8) away from the centrifugal fan (6), and a second filter (16) is fixedly connected to the bottom plate (15) located above the exhaust fan blades (20).

4. The cooling device for a frequency conversion control cabinet according to claim 1, characterized in that: The cabinet (1) is located below the centrifugal fan (6) and is equidistantly rotatably connected to a limit rod (10), and the outer wall of the limit rod (10) is cooperatively connected to a baffle (11).

5. The cooling device for a frequency conversion control cabinet according to claim 1, characterized in that: Both sides of the interior of the cabinet (1) are fixedly connected to clamping plates (2), the outer wall of the clamping plate (2) is fixedly connected to fixing plates (3) at equal distances, and a door lock (26) is provided on the side of the cabinet door (24) away from the cabinet (1).

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