Low-voltage frequency conversion cabinet convenient for heat dissipation

Abstract

The utility model provides a low-voltage frequency conversion cabinet convenient for heat dissipation, which belongs to the technical field of power equipment and comprises a cabinet body, a wind shielding mechanism, a blowing mechanism and a control mechanism, partition plates are arranged in the cabinet body and divide the interior of the cabinet body into a plurality of independent spaces, and each partition plate is provided with an upper ventilation opening, a middle ventilation opening and a lower ventilation opening. The cabinet body is provided with an air inlet and an air outlet; the wind shielding mechanism is arranged on the partition plate and provided with a wind shielding assembly, and the wind shielding assembly is movably connected with the partition plate. The blowing mechanism has a degree of freedom of moving up and down along the inner wall of the cabinet body; the control mechanism is in transmission connection with the blowing mechanism. According to the low-voltage frequency conversion cabinet convenient for heat dissipation, air circulates in each independent space in a reciprocating roundabout mode by means of the upper ventilation opening, the middle ventilation opening, the lower ventilation opening and the wind shielding mechanism on the partition plate, heat dissipation is carried out on the frequency conversion module, meanwhile, the air circulates in a straight line mode, and the heat dissipation efficiency is improved. Therefore, heat dissipation can be quickly carried out on a certain frequency conversion module.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power equipment, and in particular relates to a low-voltage frequency conversion cabinet which is convenient for heat dissipation. Background Art

[0002] When installing an existing high-power modular low-voltage frequency conversion cabinet, the cabinet is generally divided into different independent spaces for installing various frequency conversion modules; however, the vents of the high-power modular low-voltage frequency conversion cabinet are generally installed on the top of the cabinet. Since the interior of the cabinet is divided into multiple independent spaces, generally only one vent is set when ventilating and cooling each frequency conversion module; when relying on one vent to cool multiple independent spaces, the vent has a poor heat dissipation effect on the frequency conversion modules in each independent space. Utility Model Content

[0003] The embodiment of the utility model provides a low-voltage frequency conversion cabinet that is easy to dissipate heat, so as to solve the technical problem in the prior art that the heat dissipation effect of the frequency conversion modules in each independent space inside the low-voltage frequency conversion cabinet is poor.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: to provide a low-voltage frequency conversion cabinet that is easy to dissipate heat, including:

[0005] The cabinet has a plurality of partitions arranged from left to right in sequence; the partitions divide the interior of the cabinet into a plurality of independent spaces, and each frequency conversion module is respectively arranged in the plurality of independent spaces; each of the partitions is provided with an upper vent, a middle vent and a lower vent from top to bottom in sequence; the two side walls of the cabinet located on the left and right sides of the plurality of independent spaces are respectively provided with an air inlet and an air outlet;

[0006] There are multiple wind shield mechanisms, which are respectively arranged on the multiple partition plates; the wind shield mechanism is provided with multiple wind shield components corresponding to the upper vents, the middle vents and the lower vents one by one, and the wind shield components are movably connected to the partition plates and are used to open or cover the upper vents, the middle vents or the lower vents;

[0007] A blower mechanism is arranged inside the cabinet and located on a side close to the air inlet, and is used to blow air toward the inside of the cabinet; the blower mechanism has the freedom to move up and down along the inner wall of the cabinet;

[0008] The control mechanism is arranged inside the cabinet and is transmission-connected with the blower mechanism for controlling the movement of the blower mechanism.

[0009] In a possible implementation, the wind shield assembly includes an upper slide, a lower slide and a wind shield plate, the upper slide and the lower slide are arranged in parallel and spaced apart on the side of the partition plate, and slide grooves are provided on opposite sides of the upper slide and the lower slide; the wind shield plate is arranged between the upper slide and the lower slide, and has the freedom to slide along the wall of the slide groove; the wind shield plates of the multiple wind shield assemblies correspond one by one to the upper vents, the middle vents and the lower vents respectively.

[0010] In a possible implementation, a sealing gasket is provided on one side of the wind shield plate close to the upper vent, the middle vent, or the lower vent.

[0011] In a possible implementation, a guide surface is provided on a side of the sealing gasket away from the cabinet door, and the guide surface is inclined.

[0012] In a possible implementation, a grip portion is provided on a side of the wind deflector close to the cabinet door.

[0013] In a possible implementation, the hair dryer mechanism includes a connecting member and a hair dryer, wherein the connecting member is disposed on the side wall of the cabinet and is slidably connected to the side wall of the cabinet; and the hair dryer is fixedly disposed on the connecting member.

[0014] In a possible implementation, the control mechanism includes a limit block, a guide block, a threaded rod, a guide rod and a driver; the limit block is fixedly arranged on one side of the connecting member, and the limit block is provided with a threaded hole; the guide block is fixedly arranged on the side of the connecting member away from the limit block, and the guide block is provided with a guide hole; the threaded rod is vertically arranged inside the cabinet, the threaded rod passes through the threaded hole, and is threadedly connected to the threaded hole; the guide rod is vertically arranged inside the cabinet, the guide rod passes through the guide hole, and is slidably connected to the guide hole; the driver is arranged inside the cabinet, and is transmission-connected to the threaded rod, for driving the threaded rod to rotate.

[0015] In a possible implementation, a filter is provided in the air inlet.

[0016] The utility model provides a low-voltage frequency conversion cabinet that is easy to dissipate heat. The beneficial effect is that compared with the prior art, the low-voltage frequency conversion cabinet of the utility model, when in use, because the partition plate is provided with upper vents, middle vents and lower vents in sequence from top to bottom, and the two side walls on the left and right sides of the multiple independent spaces in the cabinet are respectively provided with air inlets and air outlets, and at the same time, the wind shield mechanism is provided with multiple wind shield components that correspond to the upper vents, middle vents and lower vents one by one, and the wind shield component is movably connected to the partition plate. Therefore, when ventilating and dissipating the frequency conversion modules in the multiple independent spaces inside the cabinet, the wind shield component is controlled to open the upper vent on the partition plate close to the air inlet and away from the air inlet, and ... The wind shield assembly on the partition plate on the right side of this partition plate opens the lower vent, and at the same time, the multiple partition plates arranged from left to right open the upper vents and the lower vents in turn, and the air blowing mechanism is moved to the position corresponding to the upper vent with the help of the control mechanism, so that the air entering the cabinet from the air inlet circulates in multiple independent spaces, and enters each independent space in turn from left to right in a reciprocating and circuitous manner, thereby ventilating and cooling the frequency conversion modules in the multiple independent spaces, and finally the air flows out from the air outlet; since the sizes of the independent spaces are different and the frequency conversion modules installed are different, the heating conditions of the frequency conversion modules are also different. In order to dissipate the heat of the frequency conversion modules with higher temperatures more quickly , according to the position of a certain frequency conversion module, the corresponding upper vents, middle vents or lower vents on the partition board are opened to dissipate heat for the frequency conversion module, that is, when the frequency conversion module is at the upper part of the cabinet, the upper vents of multiple partition boards are all opened, and the middle vents and lower vents are all blocked, and the air blowing mechanism is moved to the position corresponding to the upper vents, so that the air circulates in a straight line inside the cabinet, thereby quickly dissipating heat for the frequency conversion module located at the upper part of the cabinet; similarly, when the frequency conversion module is in the middle part of the cabinet, the middle vents of multiple partition boards are all opened, and the upper vents and lower vents are all blocked, and the air blowing mechanism is moved to the position corresponding to the middle vents , so that the air can quickly dissipate the heat of the frequency conversion module located in the middle of the cabinet; when the frequency conversion module is at the bottom of the cabinet, all the lower vents of the multiple partitions are opened, and the upper vents and the middle vents are completely blocked, and the air blowing mechanism is moved to a position corresponding to the lower vents, so that the air can quickly dissipate the heat of the frequency conversion module located at the bottom of the cabinet; in this way, with the help of the upper vents, the middle vents, the lower vents and the wind shielding mechanism on the partition board, the air is circulated in a reciprocating and circuitous manner in each independent space, thereby dissipating the heat of the frequency conversion module in each independent space, and at the same time, the air can be circulated in a straight line, so as to quickly dissipate the heat of a certain frequency conversion module in the independent space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The structure of the low voltage frequency conversion cabinet provided by the embodiment of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The structure of the low voltage frequency conversion cabinet provided by the embodiment of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 The structure of the low voltage frequency conversion cabinet provided by the embodiment of the utility model is shown in FIG. Figure 3 ;

[0021] Figure 4 The structure of the low voltage frequency conversion cabinet provided by the embodiment of the utility model is shown in FIG. Figure 4 ;

[0022] Figure 5 The structure of the low voltage frequency conversion cabinet provided by the embodiment of the utility model is shown in FIG. Figure 5 ;

[0023] Figure 6 A schematic diagram of the connection between the partition plate and the wind shield mechanism provided in an embodiment of the utility model;

[0024] Figure 7 A schematic diagram of the structure of the wind shielding mechanism provided by an embodiment of the utility model;

[0025] Figure 8 for Figure 7 The enlarged view of point A in the middle;

[0026] Fig. 9 A schematic diagram of the connection between the windshield and the sealing cushion provided in an embodiment of the utility model;

[0027] Fig.10 This is a schematic diagram of the connection between the hair dryer mechanism and the control mechanism provided in the embodiment of the utility model.

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Cabinet; 11. Partition plate; 12. Independent space; 13. Upper vent; 14. Middle vent; 15. Lower vent; 16. Air inlet; 17. Air outlet; 2. Wind shield mechanism; 21. Upper slide; 22. Lower slide; 23. Wind shield; 24. Slide; 25. Sealing pad; 26. Guide surface; 27. Grip; 3. Blower mechanism; 31. Connector; 32. Blower; 4. Control mechanism; 41. Limit block; 42. Guide block; 43. Threaded rod; 44. Guide rod; 45. Driver; 5. Filter; 6. Frequency conversion module. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] See also Figures 1 to 10Now, the low-voltage frequency conversion cabinet provided by the utility model for easy heat dissipation is described. A low-voltage frequency conversion cabinet for easy heat dissipation includes a cabinet body 1, a wind shielding mechanism 2, a blower mechanism 3 and a control mechanism 4. A plurality of partition plates 11 are arranged in sequence from left to right inside the cabinet body 1. The partition plates 11 divide the interior of the cabinet body 1 into a plurality of independent spaces 12. Each frequency conversion module 6 is arranged in a plurality of independent spaces 12. The plurality of partition plates 11 are arranged with upper vents 13, middle vents 14 and lower vents 15 from top to bottom. The two side walls on the left and right sides of the plurality of independent spaces 12 in the cabinet body 1 are respectively provided with air inlets 16 and air outlets 17; the number of wind shielding mechanisms 2 is multiple, and they are respectively Arranged on a plurality of partition plates 11, the wind shield mechanism 2 is provided with a plurality of wind shield components corresponding to the upper vents 13, the middle vents 14 and the lower vents 15, and the wind shield components are movably connected to the partition plates 11, and are used to open or block the upper vents 13, the middle vents 14 or the lower vents 15; the air blowing mechanism 3 is arranged inside the cabinet 1, and is located on the side close to the air inlet 16, and is used to blow air toward the inside of the cabinet 1, and the air blowing mechanism 3 has the freedom to move up and down along the inner wall of the cabinet 1; the control mechanism 4 is arranged inside the cabinet 1, and is transmission-connected to the air blowing mechanism 3, and is used to control the movement of the air blowing mechanism 3.

[0035] The low-voltage frequency conversion cabinet provided in the present embodiment is easy to dissipate heat. Compared with the prior art, the low-voltage frequency conversion cabinet of the present invention, when in use, because the partition plate 11 is provided with upper vents 13, middle vents 14 and lower vents 15 in sequence from top to bottom, and the two side walls located on the left and right sides of the plurality of independent spaces 12 in the cabinet body 1 are respectively provided with air inlets 16 and air outlets 17, and at the same time, the wind shield mechanism 2 is provided with a plurality of wind shield components corresponding to the upper vents 13, middle vents 14 and lower vents 15 one by one, and the wind shield component is movably connected to the partition plate 11, so when the frequency conversion modules 6 in the plurality of independent spaces 12 inside the cabinet body 1 are cooled, the wind shield component is controlled to be close to the partition plate at the air inlet 16. The upper vent 13 on the panel 11 away from the air inlet 16 is opened, and the wind shield assembly on the partition panel 11 on the right side of the partition panel 11 is controlled to open the lower vent 15, and at the same time, the upper vents 13 and the lower vents 15 of the multiple partition panels 11 arranged from left to right are opened in sequence, and the air blowing mechanism 3 is moved to the position corresponding to the upper vent 13 by means of the control mechanism 4, so that the air entering the cabinet 1 from the air inlet 16 circulates in the multiple independent spaces 12, and enters each independent space 12 in sequence from left to right in a reciprocating and circuitous manner, thereby ventilating and cooling the frequency conversion modules 6 in the multiple independent spaces 12, and finally the air flows out from the air outlet 17; since each independent space 1 2 is different in size, and the frequency conversion modules 6 installed are different, so the heating conditions of each frequency conversion module 6 are also different. In order to dissipate the heat of the frequency conversion module 6 with a higher temperature more quickly, according to the position of a certain frequency conversion module 6, the corresponding upper vent 13, middle vent 14 or lower vent 15 on the partition plate 11 is opened, so as to dissipate the heat of the frequency conversion module 6. That is, when the frequency conversion module 6 is at the upper part of the cabinet 1, the upper vents 13 of multiple partition plates 11 are all opened, and the middle vent 14 and the lower vent 15 are all blocked, and the air blowing mechanism 3 is moved to the position corresponding to the upper vent 13, so that the air circulates in a straight line inside the cabinet 1, so as to quickly vent the frequency conversion module 6 located in the cabinet. 1 for heat dissipation of the frequency conversion module 6 at the top; similarly, when the frequency conversion module 6 is in the middle of the cabinet 1, the middle vents 14 of the plurality of partitions 11 are all opened, and the upper vents 13 and the lower vents 15 are all blocked, and the air blowing mechanism 3 is moved to a position corresponding to the middle vents 14, so that the air can quickly dissipate the heat of the frequency conversion module 6 located in the middle of the cabinet 1; when the frequency conversion module 6 is in the lower part of the cabinet 1, the lower vents 15 of the plurality of partitions 11 are all opened, and the upper vents 13 and the middle vents 14 are all blocked, and the air blowing mechanism 3 is moved to a position corresponding to the lower vents 15, so that the air can quickly dissipate the heat of the frequency conversion module 6 located in the lower part of the cabinet 1;In this way, by means of the upper vents 13, the middle vents 14, the lower vents 15 and the wind shielding mechanism 2 on the partition plate 11, the air is circulated in a reciprocating and circuitous manner in each independent space 12, thereby dissipating the heat of the frequency conversion module 6 in each independent space 12, and the air can also be circulated in a straight line, thereby quickly dissipating the heat of a certain frequency conversion module 6 in the independent space 12. ;

[0036] See also Figures 6 to 8 As a specific embodiment of the low-voltage frequency conversion cabinet for heat dissipation provided by the utility model, the wind shield assembly includes an upper slide 21, a lower slide 22 and a wind shield 23. The upper slide 21 and the lower slide 22 are arranged in parallel and spaced on the side of the partition plate 11, and the upper slide 21 and the lower slide 22 are arranged on the opposite side of the partition plate 11. A slide groove 24 is opened. The wind shield 23 is arranged between the upper slide 21 and the lower slide 22, and has the freedom to slide along the groove wall of the slide groove 24. The wind shields 23 of the plurality of wind shield assemblies are respectively connected to the upper vent 13, the middle vent The air vents 14 and the lower air vents 15 correspond to each other one by one; when opening the upper air vents 13, the middle air vents 14 or the lower air vents 15 on the partition plate 11, it is only necessary to pull out the corresponding wind shield 23 from the slide grooves 24 in the upper slide 21 and the lower slide 22, that is, control the wind shield 23 to move toward the direction close to the cabinet door of the cabinet body 1 until the wind shield 23 exposes the corresponding upper air vents 13, the middle air vents 14 or the lower air vents 15, so that air can flow from the upper air vents 13, the middle air vents 14 or the lower air vents 15.

[0037] See also Figures 6 to 8 As a specific implementation of the low-voltage frequency conversion cabinet that is easy to dissipate heat provided by the utility model, a sealing gasket 25 is provided on one side of the wind shield 23 close to the upper vent 13, the middle vent 14 or the lower vent 15; because the wind shield 23 is arranged on the side of the partition plate 11, there is a gap between the wind shield 23 and the corresponding upper vent 13, the middle vent 14 or the lower vent 15, and air can easily flow through the gap. Therefore, a sealing gasket 25 is provided on the wind shield 23 to seal the gap, so as to maximize the use of air to dissipate heat for each independent space 12; the sealing gasket 25 is made of elastic material.

[0038] See also Fig. 9 As a specific implementation of the low-voltage frequency conversion cabinet that is easy to dissipate heat provided by the utility model, a guide surface 26 is provided on the side of the sealing gasket 25 away from the cabinet door of the cabinet body 1, and the guide surface 26 is inclined; since the sealing gasket 25 is installed on the wind shield 23, the thickness of the wind shield 23 is increased in disguise, and therefore an inclined guide surface 26 is provided on the side of the sealing gasket 25 away from the cabinet door of the cabinet body 1, so that the wind shield 23 can enter the slide groove 24 easily.

[0039] See also Figure 6As a specific implementation of the low-voltage frequency conversion cabinet that is easy to dissipate heat provided by the utility model, a gripping portion 27 is provided on the side of the wind shield 23 close to the cabinet door of the cabinet body 1; since the wind shield 23 is opened or blocked by a push-pull method corresponding to the upper vent 13, the middle vent 14 or the lower vent 15, a gripping portion 27 is provided on the side of the wind shield 23 close to the cabinet door of the cabinet body 1 to facilitate the staff to push and pull the wind shield 23.

[0040] See also Fig.10 As a specific implementation of the low-voltage frequency conversion cabinet that is easy to dissipate heat provided by the utility model, the blower mechanism 3 includes a connecting piece 31 and a blower 32. The connecting piece 31 is arranged on the side wall of the cabinet 1 and is slidably connected to the side wall of the cabinet 1. The blower 32 is fixed on the connecting piece 31. With the help of the connecting piece 31, the blower 32 can move along the side wall of the cabinet 1, and the blower 32 is used to dissipate heat for the frequency conversion module 6 inside the cabinet 1.

[0041] See also Fig.10 As a specific embodiment of the low-voltage frequency conversion cabinet for heat dissipation provided by the utility model, the control mechanism 4 includes a limit block 41, a guide block 42, a threaded rod 43, a guide rod 44 and a driver 45. The limit block 41 is fixedly arranged on one side of the connecting member 31, and the limit block 41 is provided with a threaded hole. The guide block 42 is fixedly arranged on the side of the connecting member 31 away from the limit block 41, and the guide block 42 is provided with a guide hole; the threaded rod 43 is vertically arranged inside the cabinet 1, the threaded rod 43 passes through the threaded hole, and is threadedly connected with the threaded hole; the guide rod 44 is vertically arranged inside the cabinet 1, the guide rod 44 passes through the guide hole, and is threadedly connected with the guide hole. The hole is slidably connected; the driver 45 is arranged inside the cabinet 1 and is transmission-connected with the threaded rod 43, and is used to drive the threaded rod 43 to rotate; when controlling the hair dryer 32 to move up and down, the driver 45 controls the threaded rod 43 to rotate, thereby causing the limit block 41 to move along the length direction of the threaded rod 43, and at the same time, the guide block 42 moves along the length direction of the guide rod 44; since the limit block 41 and the guide block 42 are respectively fixed on both sides of the connecting member 31, and the hair dryer 32 is fixed on the connecting member 31, the limit block 41 and the guide block 42 drive the connecting member 31 to move, thereby driving the hair dryer 32 to move; the driver 45 is a motor.

[0042] See also Figures 1 to 5 As a specific implementation of the low-voltage frequency conversion cabinet for heat dissipation provided by the utility model, a filter 5 is provided in the air inlet 16; the filter 5 is used to filter the dust in the air entering the cabinet 1 to prevent the dust from being contaminated on the frequency conversion module 6, thereby affecting the operation of the frequency conversion module 6.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage frequency conversion cabinet that is easy to dissipate heat, characterized in that: include: The cabinet has a plurality of partitions arranged from left to right in sequence; the partitions divide the interior of the cabinet into a plurality of independent spaces, and each frequency conversion module is respectively arranged in the plurality of independent spaces; each of the partitions is provided with an upper vent, a middle vent and a lower vent from top to bottom in sequence; the two side walls of the cabinet located on the left and right sides of the plurality of independent spaces are respectively provided with an air inlet and an air outlet; There are multiple wind shield mechanisms, which are respectively arranged on the multiple partition plates; the wind shield mechanism is provided with multiple wind shield components corresponding to the upper vents, the middle vents and the lower vents one by one, and the wind shield components are movably connected to the partition plates and are used to open or cover the upper vents, the middle vents or the lower vents; A blower mechanism is arranged inside the cabinet and located on a side close to the air inlet, and is used to blow air toward the inside of the cabinet; the blower mechanism has the freedom to move up and down along the inner wall of the cabinet; The control mechanism is arranged inside the cabinet and is transmission-connected with the blower mechanism for controlling the movement of the blower mechanism.

2. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 1, characterized in that: The wind shield assembly includes an upper slide, a lower slide and a wind shield plate, the upper slide and the lower slide are arranged in parallel and spaced apart on the side of the partition plate, and a slide groove is provided on the opposite side of the upper slide and the lower slide; the wind shield plate is arranged between the upper slide and the lower slide, and has the freedom to slide along the wall of the slide groove; the wind shield plates of the multiple wind shield assemblies correspond to the upper vents, the middle vents and the lower vents respectively.

3. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 2, characterized in that: A sealing gasket is provided on one side of the wind shield plate close to the upper vent, the middle vent or the lower vent.

4. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 3, characterized in that: A guide surface is provided on a side of the sealing gasket away from the cabinet door, and the guide surface is inclined.

5. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 2, characterized in that: A gripping portion is provided on one side of the wind shield plate close to the cabinet door.

6. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 1, characterized in that: The hair dryer mechanism comprises a connecting piece and a hair dryer. The connecting piece is arranged on the side wall of the cabinet and is slidably connected with the side wall of the cabinet. The hair dryer is fixed on the connecting piece.

7. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 6, characterized in that: The control mechanism includes a limit block, a guide block, a threaded rod, a guide rod and a driver; the limit block is fixedly arranged on one side of the connecting member, and the limit block is provided with a threaded hole; the guide block is fixedly arranged on the side of the connecting member away from the limit block, and the guide block is provided with a guide hole; the threaded rod is vertically arranged inside the cabinet, the threaded rod passes through the threaded hole, and is threadedly connected to the threaded hole; the guide rod is vertically arranged inside the cabinet, the guide rod passes through the guide hole, and is slidably connected to the guide hole; the driver is arranged inside the cabinet, and is transmission-connected to the threaded rod, and is used to drive the threaded rod to rotate.

8. A low voltage frequency conversion cabinet for heat dissipation as claimed in claim 1, characterized in that: A filter screen is arranged in the air inlet.

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