Heat dissipation and moisture-proof device and method for electrical control cabinet

Abstract

The present invention relates to the technical field of heat dissipation and moisture-proofing of electrical control cabinets, and provides a heat dissipation and moisture-proofing device and method for an electrical control cabinet, comprising a cabinet body, ventilation slots are provided on both side walls of the cabinet body, the ventilation slots are connected to pipelines, a switch component is arranged between the ventilation slots and the pipeline, and a dehumidification component is arranged in the pipeline, so that the cabinet body can perform internal circulation and external gas circulation, and the dehumidification component is started to start dehumidification when the humidity inside the cabinet body exceeds a preset value, and the dehumidification component is closed when the humidity is lower than the preset humidity, so as to ensure that the humidity inside the cabinet body is maintained within the preset humidity range. Compared with the desiccant of the existing dehumidification device that is always in a working state, so that the humidity inside the cabinet body is always in a very low state, the present invention reduces the use of the desiccant by maintaining the humidity inside the cabinet body within a range close to the preset humidity, and indirectly increases the service life of the desiccant, thereby reducing the frequency of maintenance or replacement of the desiccant.

Description

Technical Field

[0001] The invention relates to the technical field of heat dissipation and moisture-proofing of an electrical control cabinet, and in particular to a heat dissipation and moisture-proofing device and method for an electrical control cabinet. Background Art

[0002] An electrical control cabinet is a device used to centrally control and protect electrical equipment, usually in industrial and commercial locations. It contains various electrical components, such as circuit breakers, relays, transformers, contactors, PLCs (programmable logic controllers), etc., to monitor, control and protect electrical equipment.

[0003] The heat dissipation and moisture-proof devices in the electrical control cabinet are important components to ensure the stable operation of the equipment. Since there are many electrical components in the control cabinet, these components will generate heat during operation. If the heat is not dissipated in time, it may cause the components to overheat, thereby affecting the performance of the equipment or causing damage. In addition, a humid environment can cause corrosion or short circuit of electrical components, so moisture-proof measures are also very important. For example, Chinese patent CN208797389U discloses a moisture-proof and dehumidifying central cabinet. This solution achieves the function of moisture-proof and dehumidification by arranging multiple desiccant boxes at intervals.

[0004] However, the desiccant in the drying box in the above solution will become ineffective after long-term use, resulting in the need for frequent maintenance, and the drying effect of the desiccant will become worse and worse as the use time increases. Summary of the invention

[0005] Based on this, it is necessary to provide a heat dissipation and moisture-proof device and method for an electrical control cabinet to address the problem that the moisture-proof effect of the moisture-proof device in the current electrical control cabinet becomes increasingly poor as the usage time increases.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A heat dissipation and moisture-proof device for an electrical control cabinet, comprising:

[0008] A cabinet, wherein ventilation slots are respectively provided on both side walls of the cabinet, and pipes are connected to the ventilation slots. A switch assembly is provided between the pipes and the ventilation slots, and the switch assembly controls the internal or external gas of the cabinet to be connected to the pipes;

[0009] A dehumidification component, the dehumidification component includes a desiccant and a spoiler, a channel for containing the desiccant is provided in the pipe, and the spoiler is provided at one end of the pipe away from the ventilation slot to provide power for the gas to flow in the pipe;

[0010] After the humidity in the cabinet reaches a preset humidity, the switch assembly controls the gas inside the cabinet to communicate with the pipeline, and the spoiler is activated to drive the gas in the cabinet to pass through the desiccant;

[0011] After the temperature in the cabinet reaches a preset temperature, the switch assembly controls the air outside the cabinet to communicate with the pipeline, and the spoiler is activated to drive the air in the cabinet to pass through the desiccant;

[0012] An air flow channel is arranged in the pipeline, the opening of the air flow channel and the opening of the desiccant channel are in the same plane, an adjustment component is arranged on the air flow channel, the adjustment component is used to adjust the size of the opening of the air flow channel, and the size of the opening of the air flow channel is negatively correlated with the humidity in the cabinet.

[0013] Furthermore, the adjustment assembly includes an adjustment plate and an adjustment wheel, the adjustment plate is slidably arranged at the opening of the air flow channel, the adjustment wheel is rotatably arranged on the pipe, the adjustment wheel is engaged with a surface of the adjustment plate, and the rotation of the adjustment wheel drives the adjustment plate to slide at the opening of the air flow channel.

[0014] Furthermore, the air flow channel is curved as a whole and passes through the channel for containing the desiccant, and there are multiple air flow channels, and the gaps between adjacent air flow channels are connected to the channel for containing the desiccant.

[0015] Furthermore, the material of the air flow channel is a heat-conducting material.

[0016] Furthermore, after the spoiler reaches a preset working time, it rotates in the opposite direction to change the flow direction of the gas in the pipeline, and the flow direction of the gas passing through the ventilation slots on the two side walls of the cabinet is changed.

[0017] Further, the switch assembly includes a rotating plate and a supporting plate, the rotating plate is rotatably arranged on the ventilation slot, the supporting plate is vertically arranged on the inner side wall of the cabinet and close to the rotating plate, the pipe connects the supporting plate and the ventilation slot, and the supporting plate is hollow;

[0018] The rotating plate is configured to block the ventilation slot when it is rotated to a first position, and the gas in the cabinet enters the pipe through the support plate; and to block the support plate when it is rotated to a second position, and the gas outside the cabinet enters the pipe through the ventilation slot.

[0019] Furthermore, an arc-shaped filter plate is provided between the support plate and the ventilation slot, and the arc-shaped filter plate is used to filter the gas outside the cabinet.

[0020] Furthermore, the arc filter plate is in sliding contact with an end of the rotating plate away from the rotating position, and the rotating plate switches position to scrape impurities on the arc filter plate.

[0021] Furthermore, the spoiler is a fan.

[0022] The present invention also provides a heat dissipation and moisture-proof method for an electrical control cabinet, comprising the following steps:

[0023] S100: obtaining the temperature and humidity inside the cabinet;

[0024] S200: When the humidity exceeds the preset humidity, the spoiler is activated, and the switch assembly is controlled to pass the gas inside the cabinet into the pipeline, and the gas is dried by the desiccant in the pipeline;

[0025] When the temperature exceeds the preset temperature, the spoiler is activated, and the switch assembly is controlled to pass the gas outside the cabinet into the pipeline, and the external gas cools the inside of the cabinet and dries the gas at the same time;

[0026] S300: Detecting the humidity in the cabinet, and adjusting the adjustment component according to the humidity in the cabinet to adjust the opening size of the air flow channel, where the opening size of the air flow channel is negatively correlated with the humidity in the cabinet;

[0027] S400: changing the rotation direction of the spoiler at a fixed time to change the flow direction of the gas outside the cabinet inside the cabinet;

[0028] S500: When the humidity in the cabinet is lower than a preset value and the temperature is lower than a preset value, the spoiler is closed and the switch assembly is controlled to close the ventilation slot.

[0029] The beneficial effects of the present invention are:

[0030] The present invention provides a switch component and a dehumidification component so that the cabinet can perform internal circulation and external gas circulation. The dehumidification component is started to dehumidify when the humidity inside the cabinet exceeds a preset value, and is turned off when the humidity is lower than the preset value, thereby ensuring that the humidity inside the cabinet is maintained within the preset humidity range. Compared with the existing dehumidification device in which the desiccant is always in a working state, so that the humidity inside the cabinet is always in a very low state, the present invention maintains the humidity inside the cabinet within a range close to the preset humidity, and does not affect the normal operation of components within this range, thereby reducing the use of the desiccant, indirectly increasing the service life of the desiccant, and thus reducing the frequency of maintenance or replacement of the desiccant.

[0031] The present invention provides an air flow channel and an adjusting component so that when the gas outside the cabinet enters the cabinet to dissipate heat, the desiccant in the desiccant pipe can be cooled, thereby improving the drying efficiency of the desiccant.

[0032] The present invention provides a spoiler capable of changing the rotation direction, and changes the rotation direction at regular intervals to change the flow direction of gas entering the cabinet, thereby alternately regenerating the desiccant and further extending the service life of the desiccant.

[0033] The present invention filters the gas outside the cabinet and reduces the dust inside the cabinet by arranging the arc filter plate, and the rotating plate can scrape the impurities on the arc filter plate when rotating to avoid the arc filter plate being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a heat dissipation and moisture-proof device for an electrical control cabinet provided in one embodiment of the present invention;

[0035] Figure 2 for Figure 1 A left side view of a heat dissipation and moisture proof device of an electrical control cabinet provided in an embodiment;

[0036] Figure 3 for Figure 1 A top view of a heat dissipation and moisture-proof device for an electrical control cabinet provided in one embodiment;

[0037] Figure 4 for Figure 3 A cross-sectional view of a heat dissipation and moisture-proof device of an electrical control cabinet along AA provided in an embodiment;

[0038] Figure 5 for Figure 4 A partial enlarged view of part B of the heat dissipation and moisture-proof device of the electrical control cabinet provided in one embodiment;

[0039] Figure 6 for Figure 3 An axonometric view of a heat dissipation and moisture-proof device of an electrical control cabinet provided in an embodiment of the present invention, cut along AA;

[0040] Figure 7 for Figure 6 A partial enlarged view of part C of the heat dissipation and moisture-proof device of the electrical control cabinet provided in one embodiment.

[0041] in:

[0042] 100, cabinet body; 110, cabinet door; 120, ventilation slot; 130, pipeline;

[0043] 200, switch assembly; 210, support plate; 220, rotating plate;

[0044] 300, dehumidification component; 310, channel; 311, desiccant; 312, limit plate; 320, spoiler;

[0045] 400, air flow channel; 410, connecting pipe; 420, adjustment plate; 430, adjustment wheel;

[0046] 500. Curved filter plate. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. 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.

[0048] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention.

[0049] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0050] Refer to the following Figure 1-Figure 7 The heat dissipation and moisture-proof device of an electrical control cabinet provided by the present invention is described.

[0051] A heat dissipation and moisture-proof device for an electrical control cabinet is suitable for heat dissipation and moisture-proofing of the electrical control cabinet, comprising a cabinet 100, wherein the cabinet 100 has two cabinet doors 110, various components are arranged in the cabinet 100, ventilation slots 120 are respectively opened on the left and right side walls of the cabinet 100, and pipes 130 are connected to the ventilation slots 120. A switch assembly 200 is arranged between the pipe 130 and the ventilation slots 120, and the switch assembly 200 is used to control the gas inside the cabinet 100 and the gas outside the cabinet 100 to be connected with the pipe 130, that is, to control the air inside the cabinet 100 to enter the pipe 130 to realize the internal circulation of the cabinet 100, and the air outside the cabinet 100 to enter the pipe 130 to realize the external circulation of the cabinet 100.

[0052] A dehumidification component 300 is arranged in the pipe 130. The dehumidification component 300 is used to absorb moisture in the air. The dehumidification component 300 includes a desiccant 311 and a spoiler 320. A channel 310 for holding the desiccant 311 is arranged in the pipe 130. Two limiting plates 312 are arranged in the channel 310. A plurality of sieve holes are provided on the limiting plates 312. The desiccant 311 is located in the space between the two limiting plates 312, that is, located in the channel 310, so that the gas passing through the channel 310 contacts the desiccant 311 through the sieve holes on the limiting plates 312, so that the desiccant 311 absorbs moisture, thereby reducing the humidity in the cabinet 100. The spoiler 320 is arranged on one end of the pipe 130 away from the ventilation slot 120. The spoiler 320 provides power for the gas to flow in the pipe 130. The rotation of the spoiler 320 causes the gas to flow in the pipe 130, thereby causing the gas passing through the pipe 130 to be dried by the desiccant 311.

[0053] When the humidity of the gas in the cabinet 100 reaches a preset humidity (the preset humidity refers to the humidity when it affects the components in the cabinet 100), the two spoilers 320 are activated, and the switch assembly 200 is controlled to pass the gas in the cabinet 100 into the pipe 130 to realize the internal circulation of the gas. The two spoilers 320 are activated so that the gas in the cabinet 100 continuously enters the pipe 130 and is dried by the desiccant 311 in the pipe 130. When the humidity in the cabinet 100 is lower than the preset value, the two spoilers 320 are closed, thereby reducing the use of the desiccant 311. , ensuring that the humidity in the cabinet 100 is maintained within a range lower than a preset humidity. The desiccant 311 in the existing dehumidification device is always in use, so that the humidity in the cabinet 100 is always in a very low state, thereby wasting the service life of the desiccant 311. The present invention maintains the humidity in the cabinet 100 within a range close to the preset humidity, and does not affect the normal operation of components within this range, thereby reducing the degree of use of the desiccant 311, indirectly increasing the service life of the desiccant 311, thereby reducing the frequency of maintenance or replacement of the desiccant 311.

[0054] It should be noted that when the temperature inside the cabinet 100 increases to a preset temperature (the preset temperature refers to the temperature that affects the normal operation of components), it will affect the operation of the internal components and, at the same time, reduce the gas drying effect of the desiccant 311, thereby controlling the switch assembly 200 to pass the gas outside the cabinet 100 into the pipeline 130. The introduction of external gas can reduce the temperature inside the cabinet 100, so that the desiccant 311 is cooled, thereby maintaining the drying effect of the desiccant 311 and avoiding the phenomenon that the gas drying effect of the desiccant 311 deteriorates due to excessively high temperature.

[0055] Specifically, the spoiler 320 in this embodiment may be a fan, or other structures capable of realizing the fan function, which is not specifically limited herein.

[0056] In a further embodiment, an air flow channel 400 is provided in the pipe 130, and the opening of the air flow channel 400 is in the same plane as the opening of the channel 310 for holding the desiccant 311. An adjusting component is provided on the air flow channel 400, and the adjusting component is used to adjust the opening size of the air flow channel 400. In the initial state, the adjusting component blocks the opening of the air flow channel 400. When the switch component 200 connects the gas in the cabinet 100 with the pipe 130, the air flow channel 400 is in a blocked state, and the gas inside the cabinet 100 only passes through the channel 310 for holding the desiccant 311 in the pipe 130, so that the gas in the cabinet 100 can be dried every time it passes through the pipe 130, and the drying efficiency is high. If the air flow channel 400 is in an open state at this time, part of the gas will pass through the air flow channel 400, and this part of the gas cannot be dried by the desiccant 311, thereby reducing the gas drying efficiency in the cabinet 100.

[0057] It should be noted that when the switch component 200 controls the gas outside the cabinet 100 to be connected to the pipeline 130, the regulating component at this time opens the air flow channel 400, so that part of the external gas passes through the air flow channel 400, and the size of the opening of the air flow channel 400 opened by the regulating component is negatively correlated with the humidity inside the cabinet 100. It can be understood that when the humidity in the cabinet 100 is high, more gas enters the cabinet 100 through the channel 310 for holding the desiccant 311, while less gas enters the cabinet 100 through the air flow channel 400. This is because the humidity in the cabinet 100 is already very high. If the humidity of the external air is also high, and the external air enters the cabinet 100 without being dried by the desiccant 311, the humidity in the cabinet 100 will increase, which is not conducive to the normal operation of various components in the cabinet 100. If most of the gas is dried before entering the cabinet 100, the humidity in the cabinet 100 will be less affected. At the same time, a small amount of gas entering the cabinet 100 through the air flow channel 400 will play a heat dissipation role and discharge the excess heat in the cabinet 100.

[0058] If the humidity inside the cabinet 100 is low, far below the preset humidity, the regulating component opens a larger opening of the air flow channel 400. Even if the humidity of the outside air is high, since the humidity of the air inside the cabinet 100 is far below the preset humidity, it is sufficient to ensure that the humidity of the outside air does not exceed the preset humidity when entering the cabinet 100, thereby reducing the gas passing through the channel 310 for holding the desiccant 311 (when the opening of the air flow channel 400 is larger, the gas is more likely to pass through the air flow channel 400, because there is no obstruction to hinder the flow of gas in the air flow channel 400, and the channel 310 for holding the desiccant 311 has the desiccant 311, and the gas will have a blocking effect when passing through the desiccant 311), thereby reducing the use of the desiccant 311. When the external air enters the cabinet 100 and is then discharged, it takes out the heat in the cabinet 100, thereby reducing the temperature in the cabinet 100, and then the desiccant 311 is cooled, thereby improving the drying efficiency of the desiccant 311 for the gas. The two complement each other, which not only realizes the heat dissipation inside the cabinet 100, but also cools the desiccant 311, thereby improving the drying efficiency of the desiccant 311, killing two birds with one stone.

[0059] Specifically, the adjustment assembly in this embodiment includes an adjustment plate 420 and an adjustment wheel 430. Figure 5 As shown, the adjustment plate 420 is slidably arranged at the opening of the air flow channel 400, and the adjustment plate 420 can slide along the plane where the opening of the air flow channel 400 is located to adjust the size of the opening, and the adjustment wheel 430 is rotatably arranged on the outer wall of the pipe 130, and the adjustment wheel 430 is specifically driven by a driving motor (not shown in the figure), and the rotating shaft of the driving motor is connected to the adjustment wheel 430 to drive the adjustment wheel 430 to rotate. The adjustment wheel 430 is meshed with a surface of the adjustment plate 420, and the surface is provided with teeth, and the adjustment wheel 430 is a gear, and the teeth of the adjustment wheel 430 are meshed with the teeth of the adjustment plate 420. When the adjustment wheel 430 rotates, it can drive the adjustment plate 420 to slide on the plane where the opening of the air flow channel 400 is located, thereby adjusting the size of the opening of the air flow channel 400.

[0060] It should be noted that the adjustment component is not limited to the above structure, but can also be other structures that realize the above functions. For example, it can also be a telescopic plate, which adjusts the size of the opening of the air flow channel 400 when it is extended or retracted. It can also be other structures, which are not specifically limited here.

[0061] In a further embodiment, the air flow channel 400 of the present invention is curved and passes through the channel 310 for holding the desiccant 311. It is specifically composed of a plurality of curved connecting tubes 410. The plurality of curved connecting tubes 410 are arranged side by side, and the gap between two adjacent connecting tubes 410 is connected to the channel 310 for holding the desiccant 311. That is, the connecting tube 410 is located between two limiting plates 312, and the desiccant 311 wraps the outer wall of the connecting tube 410. Configuring the connecting tube 410 to be curved can increase the contact area between the gas and the inner wall of the connecting tube 410, thereby making the gas have a better cooling effect on the connecting tube 410. Since the outer wall of the connecting tube 410 is in contact with the desiccant 311, the cooling effect on the desiccant 311 is indirectly improved.

[0062] It is understandable that, compared with a straight tube, the curved connecting tube 410 can accommodate a longer connecting tube 410 in a limited space, thereby increasing the contact surface between the gas and the connecting tube 410 .

[0063] More specifically, the material of the air channel 400 is a heat-conducting material, that is, the material of the connecting pipe 410 is a heat-conducting material, for example, it can be a copper tube or an aluminum tube or other material with good thermal conductivity, which is not specifically limited here.

[0064] In a further embodiment, the cabinet 100 has ventilation slots 120 on both side walls, and the ventilation slots 120 have dehumidification components 300, but the difference is that the spoiler 320 rotates in different directions, such as Figure 4 and Figure 5 As shown, the ventilation slots 120 are located at the upper left and lower right of the cabinet 100, and the two spoilers 320 are started at the same time. When the switch assembly 200 connects the gas outside the cabinet 100 with the pipeline 130, the spoiler 320 at the lower right sucks the gas outside the cabinet 100 into the pipeline 130, that is, the gas outside the cabinet 100 is sucked into the cabinet 100, and the spoiler 320 at the upper left blows the gas inside the cabinet 100 into the pipeline 130, that is, the gas inside the cabinet 100 is discharged from the cabinet 100, so that the external gas enters the cabinet 100 and then is discharged from the cabinet 100, thereby playing a role in heat dissipation. The two spoilers 320 in this embodiment can switch the rotation direction at a fixed time, thereby switching the gas flow direction in the two ventilation slots 120, that is, the external gas enters from the lower right corner and is discharged from the upper left corner and is switched from entering from the upper left corner to being discharged from the lower right corner, and it will switch every time after a period of time.

[0065] It should be noted that the desiccant 311 can be regenerated when the temperature reaches a certain level (the regeneration of the desiccant 311 refers to the recovery of the drying capacity of the desiccant 311 to a certain extent. After the desiccant 311 has worked for a period of time, its drying capacity will drop significantly. After regeneration, it will recover a certain drying capacity, thereby extending the service life of the desiccant 311). The gas temperature in the pipe 130 on the exhaust gas side is generally higher than the temperature in the pipe 130 on the inlet gas side. This is because the temperature of the external gas is relatively low when it first enters the cabinet 100. As the gas gradually flows and absorbs most of the heat in the cabinet 100, the temperature of the gas rises. When the gas temperature is just equal to or greater than When the temperature of the desiccant 311 is reached, the gas flows into the pipe 130, and the switch assembly 200 closes half of the opening of the air flow channel 400. Most of the gas passes through the air flow channel 400, that is, through the connecting pipe 410. The gas increases the temperature of the connecting pipe 410 to regenerate the desiccant 311. At the same time, a small amount of gas passes through the channel 310 containing the desiccant 311 to take away the steam generated by the regeneration of the desiccant 311 in the channel 310. Therefore, by providing two spoilers 320 that can change the direction of gas flow, the desiccant 311 in the upper left corner and the lower right corner of the pipe 130 is regenerated in turn, which further increases the service life of the desiccant 311.

[0066] Of course, if the temperature of the gas passing through the pipeline 130 does not reach the regeneration temperature of the desiccant 311, the switch assembly 200 fully opens the opening of the air flow channel 400, so that the gas in the cabinet 100 is quickly discharged, and a very small part of the gas will pass through the channel 310 containing the desiccant 311, thereby reducing the use of the desiccant 311.

[0067] Specifically, the switch assembly 200 in this embodiment includes a support plate 210 and a rotating plate 220, one end of the rotating plate 220 is rotatably disposed on the ventilation slot 120, and the rotating plate 220 can block the ventilation slot 120 when it is in the first position, that is, when the rotating plate 220 is rotated to contact the ventilation slot 120, the ventilation slot 120 can be completely blocked. The support plate 210 is vertically disposed on the inner wall of the cabinet 100 and the fixed position is close to the position where the rotating plate 220 is rotatably connected, and the duct 130 connects the ventilation slot 120 and the support plate 210, specifically connecting the end of the ventilation slot 120 away from the rotating plate 220 and the end of the support plate 210 away from the ventilation slot 120. The support plate 210 is hollowed out. When the rotating plate 220 blocks the ventilation slot 120, the duct 130 is connected to the gas in the cabinet 100. At this time, the gas in the cabinet 100 enters the duct 130 through the hollow support plate 210. When the rotating plate 220 rotates to the second position, that is, when the rotating plate 220 and the support plate 210 overlap, the rotating plate 220 completely blocks the support plate 210, so that the gas inside the cabinet 100 cannot enter the through hole through the support plate 210. At this time, the gas outside the cabinet 100 is connected to the duct 130. In this way, the switch assembly 200 can control the gas inside or outside the cabinet 100 to enter the duct 130.

[0068] It should be noted that a rotating motor (not shown in the figure) is disposed on the rotating shaft of the rotating plate 220 in the embodiment of the present invention, and the rotating motor is used to drive the rotating plate 220 to rotate and thus change its position.

[0069] Of course, the switch assembly 200 is not limited to the above structure, but can also be other structures. For example, the rotating plate 220 is replaced by two telescopic plates, and the two telescopic plates separately control the opening and closing of the ventilation slot 120 and the support plate 210. It can also be other structures that can achieve the above functions, which will not be elaborated here.

[0070] In a further embodiment, an arc filter plate 500 is connected to the support plate 210 and the ventilation slot 120, that is, the arc filter plate 500 is located on the pipe 130. The arc filter plate 500 can intercept suspended particles in the external air of the cabinet 100, thereby filtering the air entering the cabinet 100 and reducing dust inside the cabinet 100.

[0071] Specifically, the end of the rotating plate 220 in this embodiment away from the rotation is in sliding contact with the arc filter plate 500. When the rotating plate 220 is rotated, the suspended particles intercepted on the arc filter plate 500 can be scraped off, thereby avoiding clogging of the arc filter plate 500.

[0072] It should be noted that the heat dissipation and moisture-proof device of the electrical control cabinet of the present invention can be applicable to industrial scenarios or commercial application scenarios. If it is applied to an industrial scenario, the voltage controlled by large equipment or motors in the industrial scenario is generally 380V industrial electricity. When used in this scenario, it is necessary to install a small transformer (not shown in the figure) in the heat dissipation and moisture-proof device of the electrical control cabinet. The small transformer can reduce the 380V voltage to 220V to ensure the normal power supply of the rotating motor, drive motor and spoiler 320 in the above embodiment; if it is applied to a commercial scenario, the control of household and small commercial appliances is generally 220V. When used in this scenario, there is no need to install a small transformer, and the normal power supply of the rotating motor, drive motor and spoiler 320 can be ensured.

[0073] The specific working process of the heat dissipation and moisture-proof device of an electrical control cabinet provided by the present invention is described in combination with the above embodiments:

[0074] When the humidity in the cabinet 100 exceeds the preset value, but the temperature in the cabinet 100 does not exceed the preset value, the two spoilers 320 are started, and the two spoilers 320 rotate in opposite directions. The rotating plate 220 rotates to a position overlapping with the ventilation slot 120 to completely block the ventilation slot 120, and the gas in the cabinet 100 is connected to the duct 130. At the same time, the adjustment plate 420 completely blocks the opening of the air flow channel 400, so that all the gas inside the cabinet 100 passes through the channel 310 for containing the desiccant 311. The gas is dried by the desiccant 311 to reduce the humidity in the cabinet 100. When the humidity is lower than the preset humidity, the two spoilers 320 are stopped until the humidity reaches the preset humidity again, and then the two spoilers 320 are started again. The cycle is started to maintain the humidity in the cabinet 100 within a range lower than the preset humidity.

[0075] When the temperature in the cabinet 100 exceeds a preset value, the drying effect of the desiccant 311 in the channel 310 will deteriorate. At this time, the rotating plate 220 rotates to a position in contact with the support plate 210, thereby completely shielding the support plate 210. The gas outside the cabinet 100 is connected to the pipeline 130. The regulating wheel 430 rotates to drive the regulating plate 420 to slide on the opening of the air flow channel 400 to adjust the size of the opening of the air flow channel 400 according to the humidity in the cabinet 100. If the humidity in the cabinet 100 is high, the opening of the air flow channel 400 is The opening of the air duct 400 is relatively large, and most of the gas passes through the channel 310 for holding the desiccant 311, thereby preventing the solid external gas with high humidity from increasing the humidity inside the cabinet 100; if the humidity inside the cabinet 100 is relatively low, the opening of the air duct 400 is relatively large, and most of the gas enters the cabinet 100 through the air duct 400, thereby reducing the use of the desiccant 311, and the external air of the cabinet 100 passes through the cabinet 100 to bring out the heat inside the cabinet 100, thereby reducing the temperature inside the cabinet 100 and improving the drying efficiency of the desiccant 311.

[0076] At the same time, when the gas outside the cabinet 100 passes through the inside of the cabinet 100 to take out the heat, the temperature of the gas in the channel 310 close to the gas discharge is much higher than the temperature of the gas in the channel 310 close to the gas entry. If the temperature is equal to or greater than the regeneration temperature of the desiccant 311, the adjustment plate 420 blocks half of the opening of the air flow channel 400, so that the gas partially passes through the air flow channel 400, and the gas heats the inner wall of the connecting pipe 410, thereby regenerating the desiccant 311. Part of the gas passes through the channel 310 containing the desiccant 311 and takes the steam generated by the regeneration of the desiccant 311 out of the cabinet 100; if the temperature is lower than the regeneration temperature of the desiccant 311, the adjustment plate 420 completely opens the opening of the air flow channel 400, so that most of the gas in the cabinet 100 is quickly discharged outside the cabinet 100 through the air flow channel 400, and a very small part of the gas passes through the channel 310 containing the desiccant 311 to reduce the use of the desiccant 311.

[0077] The two spoilers 320 change their rotation direction periodically to change the flow direction of the gas passing through the cabinet 100 , so that the desiccant 311 at the two ventilation slots 120 is regenerated alternately, thereby extending the service life of the desiccant 311 and avoiding frequent replacement or maintenance of the desiccant 311 .

[0078] The present invention also provides a heat dissipation and moisture-proof method for an electrical control cabinet, and the specific steps are as follows:

[0079] S100: Acquire the temperature and humidity in the cabinet 100;

[0080] A temperature sensor and a humidity sensor are arranged in the cabinet 100 to detect the temperature and humidity in the cabinet 100 .

[0081] S200: When the humidity exceeds the preset humidity, the spoiler 320 is activated, and the switch assembly 200 is controlled to pass the gas inside the cabinet 100 into the pipe 130, and the gas is dried by the desiccant 311 in the pipe 130;

[0082] When the temperature exceeds the preset temperature, the spoiler 320 is activated, and the switch assembly 200 is controlled to pass the gas outside the cabinet 100 into the pipe 130, and the external gas cools the inside of the cabinet 100 and dries the gas at the same time;

[0083] When the humidity exceeds the preset humidity, the control switch assembly 200 connects the gas inside the cabinet 100 with the pipe 130, starts the spoiler 320, realizes the gas circulation inside the cabinet 100, and at the same time, the adjustment plate 420 completely blocks the opening of the air flow channel 400, so that the gas inside the cabinet 100 passes through the channel 310 containing the desiccant 311 to reduce the humidity inside the cabinet 100;

[0084] When the temperature exceeds a preset temperature, the switch assembly 200 connects the gas outside the cabinet 100 with the channel 310 to achieve external circulation of the gas, thereby cooling the interior of the cabinet 100 .

[0085] S300: Detecting the humidity in the cabinet 100, and adjusting the opening size of the air flow channel 400 according to the humidity control and adjustment component in the cabinet 100, wherein the opening size of the air flow channel 400 is negatively correlated with the humidity in the cabinet 100;

[0086] When connecting the air outside the cabinet 100, the regulating plate 420 adjusts the opening size of the air flow channel 400 according to the humidity inside the cabinet 100, and minimizes the use of the desiccant 311 while ensuring that the humidity inside the cabinet 100 does not exceed the preset humidity.

[0087] S400: changing the rotation direction of the spoiler 320 at a fixed time to change the flow direction of the air outside the cabinet 100 inside the cabinet 100;

[0088] The desiccant 311 is regenerated cyclically and alternately by periodically changing the rotation direction of the spoiler 320 , thereby increasing the service life of the desiccant 311 .

[0089] S500 : When the humidity in the cabinet 100 is lower than a preset value and the temperature is lower than a preset value, the spoiler 320 is closed and the switch assembly 200 is controlled to close the ventilation slot 120 .

[0090] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0091] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A heat dissipation and moisture-proof device for an electrical control cabinet, characterized in that: include: A cabinet, wherein ventilation slots are respectively provided on both side walls of the cabinet, and pipes are connected to the ventilation slots. A switch assembly is provided between the pipes and the ventilation slots, and the switch assembly controls the internal or external gas of the cabinet to be connected to the pipes; A dehumidification component, the dehumidification component includes a desiccant and a spoiler, a channel for containing the desiccant is provided in the pipe, and the spoiler is provided at one end of the pipe away from the ventilation slot to provide power for the gas to flow in the pipe; After the humidity in the cabinet reaches a preset humidity, the switch assembly controls the gas inside the cabinet to communicate with the pipeline, and the spoiler is activated to drive the gas in the cabinet to pass through the desiccant; After the temperature in the cabinet reaches a preset temperature, the switch assembly controls the air outside the cabinet to communicate with the pipeline, and the spoiler is activated to drive the air in the cabinet to pass through the desiccant; An air flow channel is arranged in the pipeline, the opening of the air flow channel and the opening of the desiccant channel are in the same plane, an adjustment component is arranged on the air flow channel, the adjustment component is used to adjust the opening size of the air flow channel, the size of the air flow channel opening is negatively correlated with the humidity in the cabinet, the adjustment component includes an adjustment plate and an adjustment wheel, the adjustment plate is slidably arranged at the opening of the air flow channel, the adjustment wheel is rotatably arranged on the pipeline, the adjustment wheel is meshed with a surface of the adjustment plate, and the rotation of the adjustment wheel drives the adjustment plate to slide at the opening of the air flow channel.

2. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 1, characterized in that: The air flow channel is curved as a whole and passes through the channel for containing the desiccant. There are a plurality of air flow channels, and the gaps between adjacent air flow channels are connected to the channel for containing the desiccant.

3. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 2, characterized in that: The material of the air flow channel is a heat conductive material.

4. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 1, characterized in that: After the spoiler reaches the preset working time, it rotates in the opposite direction to change the flow direction of the gas in the pipeline, and the flow direction of the gas passing through the ventilation slots on the two side walls of the cabinet is changed.

5. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 1, characterized in that: The switch assembly comprises a rotating plate and a supporting plate, wherein the rotating plate is rotatably arranged on the ventilation slot, the supporting plate is vertically arranged on the inner side wall of the cabinet and close to the rotating plate, the pipe connects the supporting plate and the ventilation slot, and the supporting plate is hollowed; The rotating plate is configured to block the ventilation slot when it is rotated to a first position, and the gas in the cabinet enters the pipe through the support plate; and to block the support plate when it is rotated to a second position, and the gas outside the cabinet enters the pipe through the ventilation slot.

6. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 5, characterized in that: An arc-shaped filter plate is arranged between the support plate and the ventilation slot, and the arc-shaped filter plate is used for filtering the gas outside the cabinet.

7. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 6, characterized in that: The arc filter plate is in sliding contact with one end of the rotating plate away from the rotating position, and the rotating plate switches position to scrape impurities on the arc filter plate.

8. The heat dissipation and moisture-proof device of the electrical control cabinet according to claim 1, characterized in that: The spoiler is a fan.

9. A heat dissipation and moisture-proof method for an electrical control cabinet, applicable to the heat dissipation and moisture-proof device for an electrical control cabinet as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S100: obtaining the temperature and humidity inside the cabinet; S200: When the humidity exceeds the preset humidity, the spoiler is activated, and the switch assembly is controlled to pass the gas inside the cabinet into the pipeline, and the gas is dried by the desiccant in the pipeline; When the temperature exceeds the preset temperature, the spoiler is activated, and the switch assembly is controlled to pass the gas outside the cabinet into the pipeline, and the external gas cools the inside of the cabinet and dries the gas at the same time; S300: Detecting the humidity in the cabinet, and adjusting the adjustment component according to the humidity in the cabinet to adjust the opening size of the air flow channel, where the opening size of the air flow channel is negatively correlated with the humidity in the cabinet; S400: changing the rotation direction of the spoiler at a fixed time to change the flow direction of the gas outside the cabinet inside the cabinet; S500: When the humidity in the cabinet is lower than a preset value and the temperature is lower than a preset value, the spoiler is closed and the switch assembly is controlled to close the ventilation slot.

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