A forced air-cooled frequency conversion cabinet

Abstract

The utility model discloses a forced air cooling's frequency conversion cabinet, including the cabinet body, the front end rotatable opening of cabinet body is cooperated with the cabinet door, is established to the rear end of cabinet body and has the wire inlet hole, the both sides of cabinet body are detachably cooperated with the side plate, the middle position of side plate is processed with the through slot, still include the air inlet device, the air inlet device is installed from the outside of side plate, and partially passes through the through slot and extends to the inside of cabinet body, removes the air supply device, the air supply device is installed in the inside of side plate, and with air inlet device intercommunication, the air outlet device, the air outlet device is installed on the top of cabinet body, this device can change the air supply height, makes the cooling more uniform, can also carry out the pertinence heat dissipation, and is easy to maintain.

Description

Technical Field

[0001] This utility model relates to a forced air-cooled frequency converter cabinet. Background Technology

[0002] Traditional inverter cabinet cooling methods are mainly divided into two types: natural cooling and forced air cooling. Natural cooling relies on heat sinks or ventilation holes on the cabinet surface, which has low heat dissipation efficiency and is only suitable for low-power applications or applications with low ambient temperatures. Forced air cooling usually uses fixed fans for air supply or exhaust. Although the heat dissipation capacity is improved, the following problems still exist:

[0003] Uneven heat dissipation: Fixed fans can only dissipate heat to local areas, resulting in uneven temperature distribution inside the cabinet. Some high-temperature areas may affect the lifespan and stability of electronic components.

[0004] Poor adaptability: The heat generated by the frequency converter varies under different loads. Traditional air-cooled systems cannot dynamically adjust the air volume and air supply position, which may lead to insufficient heat dissipation or energy waste.

[0005] Maintenance difficulties: The air intake filter is prone to clogging, and it usually requires disassembling cabinet parts to clean or replace it, affecting the availability of the equipment.

[0006] Based on the above problems, we designed a forced air-cooled inverter cabinet that can change the air supply height to make the cooling more uniform, can also perform targeted heat dissipation, and is easy to maintain. Utility Model Content

[0007] The technical problem to be solved by this utility model is to provide a forced air-cooled inverter cabinet that can change the air supply height, make the cooling more uniform, perform targeted heat dissipation, and is easy to maintain.

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A forced-air-cooled inverter cabinet includes a cabinet body, a cabinet door that can be rotatably opened at the front end of the cabinet body, a cable inlet at the rear end of the cabinet body, and side panels that can be detachably fitted on both sides of the cabinet body. A through groove is machined in the middle of the side panel. The cabinet also includes…

[0010] An air intake device is installed from the outside of the side panel and extends partially through a through-slot into the interior of the cabinet.

[0011] A mobile air supply device is installed on the inner side of the side plate and is connected to the air inlet device.

[0012] An air outlet device is installed on the top of the cabinet.

[0013] A passive air intake filter has a first through groove machined at the front end of the cabinet door near the bottom, and the passive air intake filter covers the first through groove.

[0014] Preferably, the air intake device includes a housing, an outer baffle is provided on the outer wall of the housing, the rear end of the housing is inserted into the interior of the cabinet through the through groove, the outer baffle is located on the outer wall of the side panel and is fixed to the side panel; both ends of the housing are open, a housing cover is detachably installed at the rear end of the housing, a slot is machined on the upper part of the housing, the slot is located on the outer side of the side panel, a first passive air intake filter is vertically inserted through the slot, air intake holes are machined on the upper and lower ends of the housing, the air intake holes are located on the inner side of the cabinet; air is supplied to the mobile air supply device through the air intake holes.

[0015] Preferably, the mobile air supply device includes a controller, a motor, a screw, a connecting sleeve, a guide rod, a folding tube, a moving module, and temperature sensors. The motor and the moving module are both connected to the controller. Multiple temperature sensors are arranged vertically and fixed to the inner wall of the side plate. Two bases are provided on the upper and lower sides of the inner wall of the side plate, through which the motor is fixedly installed. There are two screws, upper and lower, with opposite rotation directions. The connecting sleeve connects the upper and lower screws. A bearing is fitted between the lower screw and the base, and the upper screw is fixed to the output end of the motor. The guide rod is fixed between the upper and lower bases. The moving module cooperates with both the screw and the guide rod. The moving module connects to the housing through the folding tube.

[0016] Preferably, the moving module includes a bellows, a nut is fixed to the outside of the bellows, a guide plate is provided on the outside of the nut, a guide rod passes through the guide plate, a screw cooperates with the nut, multiple fans are installed on the front of the bellows, and a folding tube is connected between the box body and the bellows; all of the multiple fans are connected to the controller.

[0017] Preferably, the controller is installed on the cover of the box.

[0018] Preferably, the air outlet device includes an air outlet box, an air outlet is provided on the outer side of the air outlet box, the air outlet box is fixed to the top of the cabinet, and an exhaust fan is installed on the top of the cabinet at the inner position corresponding to the air outlet box.

[0019] Preferably, an insect-proof net is fitted over the outside of the air outlet box, and the insect-proof net can be removed upwards.

[0020] Preferably, two exhaust fans are arranged on the left and right sides, and the inner top surface of the air outlet box is a V-shaped guide surface, with the exhaust fan corresponding to the guide surface; the hot air discharged from the exhaust fan is guided by the guide surface and then discharged from the air outlet.

[0021] This technical solution optimizes the air-cooling structure and combines it with an intelligent temperature control strategy to achieve a high-efficiency, reliable, and easy-to-maintain inverter cabinet heat dissipation system. Specific benefits are as follows:

[0022] Dynamic precision heat dissipation

[0023] The mobile air supply device can automatically adjust the air supply position based on temperature sensor data, focusing on cooling areas with high heat generation and avoiding localized overheating.

[0024] The twin-screw drive structure allows the air supply module to move up and down, improving heat dissipation uniformity and ensuring a balanced temperature distribution inside the cabinet.

[0025] High-efficiency negative pressure ventilation

[0026] The airflow of the exhaust device is greater than that of the intake device, creating negative pressure inside the cabinet and supplementing fresh air from the passive intake filter to enhance heat dissipation efficiency.

[0027] The V-shaped guide surface optimizes the exhaust path, reduces airflow resistance, and improves exhaust efficiency.

[0028] Modular and easy-to-maintain design

[0029] The first passive air intake filter adopts a plug-in structure, which can be quickly cleaned or replaced without disassembling the cabinet, reducing maintenance costs.

[0030] The insect-proof mesh cover can be removed separately for easy cleaning and to prevent insects and dust from entering the cabinet.

[0031] Intelligent temperature control and energy saving

[0032] The controller automatically adjusts the fan speed and moves the air delivery position based on real-time temperature data, reducing energy consumption while ensuring heat dissipation.

[0033] In low-temperature environments, the exhaust fan power can be reduced to decrease energy waste.

[0034] High protection and reliability

[0035] The dual protection of the air inlet filter and insect screen effectively prevents dust and insects from entering the cabinet, improving the equipment's environmental adaptability. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is a three-dimensional view of the air intake device;

[0039] Figure 3 This is a schematic diagram of the inner side of the side panel;

[0040] Figure 4 This is a structural diagram of the mobile module;

[0041] Figure 5 This is a structural diagram of the air outlet device. Detailed Implementation

[0042] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0043] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0044] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] Furthermore, in the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "set," "socket," "connect," "through," and "plug-in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] See Figure 1 The forced air-cooled inverter cabinet shown includes a cabinet body 1, a cabinet door 2 that can be rotatably opened at the front end of the cabinet body 1, a cable inlet at the rear end of the cabinet body 1, and side panels 3 that can be detachably fitted on both sides of the cabinet body 1. A through groove is machined in the middle of the side panel 3. It also includes…

[0048] An air intake device 4 is installed from the outside of the side panel 3 and extends partially through a through groove into the interior of the cabinet 1.

[0049] A mobile air supply device is installed on the inner side of the side plate 3 and is connected to the air inlet device 4.

[0050] Air outlet device 6, which is installed on the top of the cabinet 1;

[0051] The passive air intake filter 7 has a first through groove machined at the front end of the cabinet door 2 near the bottom, and the passive air intake filter 7 covers the first through groove.

[0052] In the above technical solution, under full power operation, the active air volume of the air outlet device 6 is greater than the active air volume of the mobile air supply device. At this time, a negative pressure will be formed in the cabinet 1, and then the air volume will be supplemented from the passive air intake filter 7, so that the internal temperature of the frequency converter cabinet can quickly return to the normal operating temperature.

[0053] In the above technical solution, the movable air supply device can move the air supply in a vertical position, making the internal temperature of the inverter cabinet more uniform. Secondly, when a location with high heat generation is detected, targeted heat dissipation can be carried out.

[0054] See Figure 2 and Figure 3As shown, the air inlet device 4 includes a housing 41, with an outer baffle 42 on the outer wall of the housing 41. The rear end of the housing 41 is inserted into the interior of the cabinet 1 via the through groove. The outer baffle 42 is located on the outer wall of the side panel 3 and is fixed to the side panel 3. The two ends of the housing 41 are open, and a cover 43 is detachably installed at the rear end of the housing 41. A slot is machined on the upper part of the housing 41, located on the outer side of the side panel 3. A first passive air inlet filter 44 is vertically inserted through the slot. Air intake holes 45 are machined on both the upper and lower ends of the housing 41, located on the inner side of the cabinet 1. Air is supplied to the mobile air supply device 5 through the air intake holes 45.

[0055] In the above technical solution, a pluggable first passive air intake filter 44 is used. When maintenance is required, it can be simply pulled out upwards, rinsed, and then reinstalled.

[0056] First passive air intake filter specifications: 304 stainless steel, 80 mesh.

[0057] See Figure 3 As shown, the mobile air supply device includes a controller 51, a motor 52, a screw 53, a connecting sleeve 54, a guide rod 55, a folding tube 57, a moving module 58, and temperature sensors 59. The motor 52 and the moving module 58 are both connected to the controller 51. Multiple temperature sensors 59 are arranged vertically and fixed to the inner wall of the side plate 3. Two bases 56 are provided on the upper and lower parts of the inner wall of the side plate 3, and the motor 52 is fixedly installed through the bases 56. The screw 53... The system has two screws, one upper and one lower, with opposite rotation directions. A connecting sleeve 54 connects the upper and lower screws 53. A bearing is fitted between the lower screw 53 and the base 56, while the upper screw 53 is fixed to the output end of the motor 52. A guide rod 55 is fixed between the upper and lower bases 56. A moving module 58 engages with both the screw 53 and the guide rod 55. The moving module 58 connects to the housing 41 via the folding tube 57.

[0058] In the above technical solution, the threads of the two screws 53 at both ends are opposite, so that when the motor 52 drives the screws 53 to rotate, it drives the two moving modules 58 to move in opposite directions.

[0059] Temperature sensor 59 detects the temperature at different heights inside cabinet 1. When a certain height is found to have a large amount of heat, controller 51 can drive motor 52 to move moving module 58 to the location with the large amount of heat for targeted heat dissipation.

[0060] When the overall temperature is relatively high, and the temperature in some local areas is even higher, the forward and reverse rotation of motor 52 is used to drive the moving module 58 to move up and down, and to stop at the location with the most heat, with the stop time controlled at 10 to 15 seconds.

[0061] Considering equipment cost, this device uses a two-section screw 53 connection and is driven by a single motor 52.

[0062] In some extremely precise applications, a dual-motor 52 structure can be used, with each screw 53 controlled independently to achieve more precise position adjustment. When using dual-motor 52 drive, there is no need to use the connecting sleeve 54.

[0063] The design of the folded tube 57 is adopted to accommodate the positional changes of the moving module 58.

[0064] Temperature sensor accuracy: ±0.5℃ (PT100 type).

[0065] Temperature control response time: <30s (from detecting abnormal temperature to air supply positioning).

[0066] Temperature uniformity: Vertical temperature difference inside the cabinet ≤ 5℃ (when running at full power).

[0067] Motor specifications: 57 stepper motor, holding torque 1.2 N·m

[0068] Screw lead: 5mm (repeatability ±0.1mm).

[0069] See Figure 3 and Figure 4 As shown, the moving module 58 includes a bellows 581, a nut 582 fixed to the outside of the bellows 581, a guide plate 583 provided on the outside of the nut 582, a guide rod 55 passing through the guide plate 583, a screw 53 cooperating with the nut 582, multiple fans 584 mounted on the front of the bellows 581, and a folding tube 57 connecting the housing 41 and the bellows 581; all of the multiple fans 584 are connected to the controller 51.

[0070] In the above technical solution, the rear end face of the bellows 581 is kept at a distance from the side plate 3. During the wiring of the entire equipment, the wire harness and temperature sensor are arranged against the inner wall of the side plate 3, so that when the bellows 581 moves, it maintains a distance from the wire harness and temperature sensor, thus avoiding the problem of movement interference.

[0071] Air volume of a single mobile air supply unit: 200m³ 3 / h.

[0072] See Figure 3As shown, the controller 51 is installed at the cover 43.

[0073] Since the airflow from the mobile module 58 cannot reach the controller 51, in order to prevent the controller 51 from overheating, we place the controller 51 at the cover 43. While maintaining airflow, the cover 43 is always kept at a relatively low temperature.

[0074] See Figure 5 As shown, the air outlet device 6 includes an air outlet box 61, an air outlet 62 is provided on the outer side of the air outlet box 61, the air outlet box 61 is fixed to the top of the cabinet 1, and an exhaust fan 63 is installed on the top of the cabinet 1 at the inner position corresponding to the air outlet box 61.

[0075] By using an exhaust fan 63 in conjunction with an air outlet box 61, side exhaust can be achieved.

[0076] See Figure 1 and Figure 5 As shown, an insect-proof net cover 64 is fitted over the outside of the air outlet box 61, and the insect-proof net cover 64 can be removed upwards.

[0077] This technical solution mainly targets insect protection at the air intake location.

[0078] In winter, when the temperature is low, it is only necessary to keep the exhaust fan running at a low power. At this time, the airflow is weak and it is impossible to prevent insects from crawling in. However, the insect net 64 mentioned above can intercept the insects and prevent them from entering.

[0079] Insect-proof mesh cover aperture: ≤1mm (304 stainless steel woven mesh).

[0080] See Figure 5 As shown, two exhaust fans 63 are arranged on the left and right sides. The inner top surface of the air outlet box 61 is a V-shaped guide surface 611, and the exhaust fan 63 corresponds to the guide surface 611. The hot air discharged from the exhaust fan 63 is guided by the guide surface 611 and then discharged from the air outlet 62.

[0081] This technical solution mainly guides the airflow, making the exhaust flow smoother.

[0082] Rated air volume of exhaust fan: 2×800m³ 3 / h (dual fans).

[0083] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0084] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0085] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0086] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0087] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0088] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A forced air-cooled variable frequency cabinet, comprising a cabinet body (1), a cabinet door (2) rotatably opened and matched at the front end of the cabinet body (1), a wire inlet hole is opened at the rear end of the cabinet body (1), and side plates (3) are detachably matched at both sides of the cabinet body (1), characterized in that: A through groove is machined at the middle position of the side plate (3), and it also includes, An air intake device (4) is installed from the outside of the side panel (3) and extends partially through a through groove into the interior of the cabinet (1). A mobile air supply device is installed on the inner side of the side plate (3) and is connected to the air inlet device (4). An air outlet device (6) is installed on the top of the cabinet (1); The passive air intake filter (7) has a first through groove processed at the front end of the cabinet door (2) near the bottom, and the passive air intake filter (7) covers the first through groove.

2. The forced air-cooled frequency converter cabinet according to claim 1, characterized in that: The air intake device (4) includes a housing (41), an outer baffle (42) is provided on the outer wall of the housing (41), the rear end of the housing (41) is inserted into the interior of the cabinet (1) through the through groove, the outer baffle (42) is limited to the outer wall surface of the side plate (3), and the outer baffle (42) is fixed to the side plate (3); the two ends of the housing (41) are connected, and a cover (43) is detachably installed at the rear end of the housing (41). A slot is machined on the upper part of the housing (41), the slot is located on the outside of the side plate (3), and a first passive air intake filter (44) is vertically inserted through the slot. Air intake holes (45) are machined on the upper and lower ends of the housing (41), and the air intake holes (45) are located on the inside of the cabinet (1); air is supplied to the mobile air supply device (5) through the air intake holes (45).

3. The forced air-cooled frequency converter cabinet according to claim 2, characterized in that: The mobile air supply device includes a controller (51), a motor (52), a screw (53), a connecting sleeve (54), a guide rod (55), a folded tube (57), a moving module (58), and a temperature sensor (59). The motor (52) and the moving module (58) are both connected to the controller (51). Multiple temperature sensors (59) are arranged vertically and fixed to the inner wall of the side plate (3). Two bases (56) are provided on the upper and lower sides of the inner wall of the side plate (3). The motor (52) is fixedly installed through the bases (56). The screw (53) is... The device is equipped with two screws (53) at the top and bottom, with opposite rotation directions. The connecting sleeve (54) is connected between the upper and lower screws (53). The lower screw (53) is fitted with a bearing between itself and the base (56), while the upper screw (53) is fixed to the output end of the motor (52). The guide rod (55) is fixed between the upper and lower bases (56). The moving module (58) is fitted with the screw (53) and the guide rod (55) respectively. The moving module (58) is connected to the housing (41) through the folding tube (57).

4. The forced air-cooled inverter cabinet according to claim 3, characterized in that: The moving module (58) includes a bellows (581), a nut (582) is fixed on the outside of the bellows (581), a guide plate (583) is provided on the outside of the nut (582), the guide rod (55) passes through the guide plate (583), the screw (53) cooperates with the nut (582), multiple fans (584) are installed on the front of the bellows (581), the folding tube (57) is connected between the box body (41) and the bellows (581); the multiple fans (584) are all connected to the controller (51).

5. The forced air-cooled inverter cabinet according to claim 3, characterized in that: The controller (51) is installed on the cover (43).

6. The forced air-cooled inverter cabinet according to claim 1, characterized in that: The air outlet device (6) includes an air outlet box (61), an air outlet (62) is provided on the outer side of the air outlet box (61), the air outlet box (61) is fixed to the top of the cabinet (1), and an exhaust fan (63) is installed on the top of the cabinet (1) at the inner position corresponding to the air outlet box (61).

7. The forced air-cooled frequency converter cabinet according to claim 6, characterized in that: An insect-proof net cover (64) is fitted over the outside of the air outlet box (61), and the insect-proof net cover (64) can be removed upwards.

8. The forced air-cooled frequency converter cabinet according to claim 6, characterized in that: Two exhaust fans (63) are arranged on the left and right sides. The inner top surface of the air outlet box (61) is a V-shaped guide surface (611). The exhaust fan (63) corresponds to the guide surface (611). The hot air discharged from the exhaust fan (63) is guided by the guide surface (611) and discharged from the air outlet (62).

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