Refrigeration and dehumidification device and electric power cabinet

Abstract

Provided are a refrigeration and dehumidification device and an electric power cabinet. The refrigeration and dehumidification device is used for an electric power cabinet, and the electric power cabinet is provided with an inner cavity. The refrigeration and dehumidification device comprises a connecting pipe (2) having two ends communicated with the inner cavity; an air circulator (3) and a refrigeration and dehumidification mechanism are provided on the connecting pipe (2); and the air circulator (3) can be used for driving air in the inner cavity to enter the connecting pipe (2), and the air is cooled or / and dehumidified by the refrigeration and dehumidification mechanism and then returns to the inner cavity through the connecting pipe (2). The electric power cabinet comprises the refrigeration and dehumidification device. A refrigeration and dehumidification device and an electric power cabinet are provided, to alleviate the technical problem that in the prior art that the refrigeration and dehumidification effects of a power distribution cabinet are poor.

Description

Refrigeration and dehumidification equipment and power cabinets

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on July 6, 2023, with application number 2023108271871 and application name “Refrigeration and Dehumidification Device and Power Cabinet”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of power distribution cabinets, and in particular to a refrigeration and dehumidification device and a power cabinet. Background Art

[0003] The distribution cabinet is a distribution equipment used for power distribution, control, metering and cable connection in the power supply system. Generally, power supply bureaus and substations use high-voltage switchgear, which is then stepped down by a transformer and led out to the low-voltage distribution cabinet on the low-voltage side. The low-voltage distribution cabinet is then connected to the distribution board, control box or switch box of each power user. The distribution cabinet is a distribution device that assembles some protective devices including switches, circuit breakers, fuses, buttons, indicator lights, meters and wires into one to meet the design functional requirements.

[0004] During maintenance work on distribution cabinets, workers often discover moisture inside. Prolonged moisture inside the cabinet can cause components and cables to mold. If maintenance isn't timely, it can even cause circuit breakers and other issues that affect component operation, posing a significant safety hazard. However, existing technologies often use blowers to dissipate heat and dry components within distribution cabinets, resulting in poor cooling and dehumidification performance.

[0005] Therefore, the present application provides a new refrigeration and dehumidification device and a power cabinet to address the above problems.

[0006] Summary of the Invention

[0007] The purpose of this application is to provide a refrigeration and dehumidification device to alleviate the technical problem of poor refrigeration and dehumidification effects of distribution cabinets in the prior art.

[0008] The purpose of this application is also to provide a power cabinet to further alleviate the technical problem of poor cooling and dehumidification effects of distribution cabinets in the prior art.

[0009] Based on the above first purpose, the present application provides a refrigeration and dehumidification device for use in an electric power cabinet, wherein the electric power cabinet is provided with an inner cavity;

[0010] The refrigeration and dehumidification device includes a connecting pipe with both ends connected to the inner cavity. An air circulation machine and a refrigeration and dehumidification mechanism are provided on the connecting pipe. The air circulation machine can be used to drive the air in the inner cavity into the connecting pipe, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, the air is returned to the inner cavity through the connecting pipe.

[0011] Furthermore, the refrigeration and dehumidification mechanism includes a refrigeration and dehumidification cavity, a first heat-conducting fin assembly, a second heat-conducting fin assembly provided above the first heat-conducting fin assembly, and a semiconductor refrigeration fin clamped between the first heat-conducting fin assembly and the second heat-conducting fin assembly;

[0012] The first heat-conducting fin assembly includes a plurality of first heat-conducting fins, each of which is inserted into the refrigeration and dehumidification cavity, and a heat-conducting fin surface of each of the first heat-conducting fins is arranged along the flow direction of air in the refrigeration and dehumidification cavity.

[0013] Furthermore, the refrigeration and dehumidification mechanism further includes a fan, the second heat-conducting fin assembly is formed with a fan mounting slot, and the fan is fixed in the fan mounting slot.

[0014] Furthermore, the refrigeration and dehumidification device is further provided with a liquid collecting hopper communicated with the refrigeration and dehumidification cavity, and a collection bottle communicated with the liquid collecting hopper.

[0015] Furthermore, the connecting pipe includes a first connecting pipe and a second connecting pipe, and the first connecting pipe and the second connecting pipe are both arranged outside the power cabinet and communicated with the inner cavity;

[0016] The refrigeration and dehumidification mechanism is arranged on the first connecting pipe, and the air circulation machine is arranged on the second connecting pipe. The air circulation machine can be used to drive the air in the inner cavity into the first connecting pipe, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, it flows through the second connecting pipe and returns to the inner cavity.

[0017] Furthermore, the refrigeration and dehumidification device further includes a third connecting pipe, one end of the first connecting pipe is connected to the third connecting pipe, and the other end is connected to the second connecting pipe, and the third connecting pipe and the second connecting pipe are respectively connected to the inner cavity;

[0018] The power cabinet is also provided with an air outlet connected to the inner cavity. One end of the third connecting pipe is connected to the air outlet, and the other end is provided as an ash discharge port. The ash discharge port is provided with a sealing plate.

[0019] Furthermore, a filter assembly is provided in the third connecting tube, and the filter assembly includes a filter cylinder and a retaining ring connected to one end of the filter cylinder. A retaining ring is also provided on the inner wall of the third connecting tube. One end of the filter cylinder is in contact with the retaining ring through the retaining ring, and the other end is in contact with the sealing plate.

[0020] By adopting the above technical solution, the refrigeration and dehumidification device of the present application has the following beneficial effects:

[0021] The refrigeration and dehumidification device is used in an electric power cabinet, such as a power distribution cabinet, a switch cabinet, or an electric tool management cabinet. The following description will be made by taking the power distribution cabinet as an example.

[0022] When the distribution cabinet needs to be cooled and dehumidified, both ends of the connecting pipe are connected to the inner cavity of the distribution cabinet, and then the air circulation machine and the refrigeration and dehumidification mechanism are turned on. The air in the inner cavity enters the connecting pipe through the air circulation machine and then returns to the inner cavity along the connecting pipe, thereby realizing the circulation of air in the connecting pipe and the inner cavity. The air in the connecting pipe is cooled and / or dehumidified by the refrigeration and dehumidification mechanism. On the one hand, the refrigerated cold air returns to the inner cavity, which can cool the components, cables or power tools in the inner cavity and dissipate heat for the components, cables or power tools. On the other hand, the refrigeration and dehumidification mechanism can condense and liquefy the water vapor in the air flowing through the connecting pipe, thereby dehumidifying the air. The dry air returns to the inner cavity, which dehumidifies the components, cables or power tools in the inner cavity, thereby alleviating the technical problem of poor dehumidification effect of the distribution cabinet in the prior art.

[0023] Based on the above-mentioned second purpose, the present application provides an electric power cabinet, including a cabinet body and the above-mentioned refrigeration and dehumidification device, the cabinet body is provided with an inner cavity and an air outlet and an air inlet both connected to the inner cavity, and the connecting pipe of the refrigeration and dehumidification device is connected between the air outlet and the air inlet.

[0024] Furthermore, the power cabinet also includes a controller and a temperature and humidity sensor, and the temperature and humidity sensor, the air cycle machine and the refrigeration and dehumidification mechanism are all connected to the controller.

[0025] Furthermore, the power cabinet further includes a mounting device disposed in the inner cavity;

[0026] The mounting device comprises a mounting frame, which is provided with a plurality of transverse mounting bars and a plurality of vertical mounting bars, and each of the plurality of transverse mounting bars and the plurality of vertical mounting bars is provided with a mounting structure capable of mounting components.

[0027] By adopting the above technical solution, the power cabinet of the present application has the following beneficial effects:

[0028] By arranging the above-mentioned refrigeration and dehumidification device in the power cabinet, the power cabinet accordingly has all the advantages of the above-mentioned refrigeration and dehumidification device, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG1 is a schematic structural diagram of a refrigeration and dehumidification device provided in an embodiment of the present application;

[0030] FIG2 is one of the partial structural enlarged views of the refrigeration and dehumidification device shown in FIG1 ;

[0031] FIG3 is a second enlarged view of the partial structure of the refrigeration and dehumidification device shown in FIG1 ;

[0032] FIG4 is a schematic diagram of the structure of a power cabinet according to an embodiment of the present application;

[0033] FIG5 is a second structural diagram of a power cabinet provided in an embodiment of the present application;

[0034] FIG6 is a schematic diagram of a partial structure of the power cabinet shown in FIG5 ;

[0035] FIG7 is an enlarged view of the local structure of part A in FIG6;

[0036] FIG8 is a third structural diagram of the power cabinet provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to better understand the technical solutions of this specification, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0038] It should be clear that the embodiments described are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this specification.

[0039] The terms used in the examples of this application are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a," "an," "the," and "the" used in the examples of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0040] Example 1

[0041] Please refer to Figure 1 and combine it with Figure 8. This embodiment provides a refrigeration and dehumidification device, which is used for an electric power cabinet. The electric power cabinet is provided with an inner cavity. The refrigeration and dehumidification device includes a connecting pipe 2 with both ends connected to the inner cavity. An air circulation machine 3 and a refrigeration and dehumidification mechanism are provided on the connecting pipe 2. The air circulation machine 3 can be used to drive the air in the inner cavity into the connecting pipe 2, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, the air is returned to the inner cavity through the connecting pipe 2.

[0042] Among them, both ends of the connecting pipe 2 are connected to the inner cavity. For example, the cabinet 1 is also provided with an air outlet 11 and an air inlet 12 both of which are connected to the inner cavity. The connecting pipe 2 is connected between the air outlet 11 and the air inlet 12. Therefore, the air circulation machine 3 can allow the air in the inner cavity to enter the connecting pipe 2 from the air outlet, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, return to the inner cavity from the air inlet through the connecting pipe 2.

[0043] It should be noted that the refrigeration and dehumidification device is used in an electric power cabinet, such as a distribution cabinet, a switch cabinet or an electric tool management cabinet, etc. The following description will be made taking the electric power cabinet as an example of a distribution cabinet.

[0044] When the distribution cabinet needs to be cooled and dehumidified, the connecting pipe 2 is connected between the air outlet 11 and the air inlet 12, so that both ends of the connecting pipe 2 are connected to the inner cavity, and then the air circulation machine 3 and the refrigeration and dehumidification mechanism are turned on. The air in the inner cavity enters the connecting pipe 2 from the air outlet 11 through the air circulation machine 3, flows along the connecting pipe 2 to the air inlet 12, and returns to the inner cavity through the air inlet 12, thereby realizing the circulation of air in the connecting pipe 2 and the inner cavity. Among them, the air in the connecting pipe 2 is cooled and / or dehumidified by the refrigeration and dehumidification mechanism. On the one hand, the cooled cold air returns to the inner cavity through the air inlet 12, which can cool the components, cables or power tools in the inner cavity, and has the effect of dissipating heat for the components, cables or power tools. On the other hand, the refrigeration and dehumidification mechanism can condense and liquefy the water vapor in the air flowing through the connecting pipe 2, thereby dehumidifying the air. The dry air returns to the inner cavity from the air inlet 12, which has the effect of dehumidifying the components, cables or power tools in the inner cavity, alleviating the technical problem of poor dehumidification effect of the distribution cabinet in the prior art.

[0045] Preferably, referring to Figures 1 and 6, in this embodiment, the refrigeration and dehumidification mechanism includes a refrigeration and dehumidification cavity, a first heat-conducting fin assembly 43, a second heat-conducting fin assembly 44 arranged above the first heat-conducting fin assembly 43, and a semiconductor refrigeration plate 42 clamped between the first heat-conducting fin assembly 43 and the second heat-conducting fin assembly 44. For example, the refrigeration and dehumidification mechanism includes a refrigeration box 41, the refrigeration and dehumidification cavity is arranged in the refrigeration box 41, the refrigeration box 41 is arranged in the connecting pipe 2 and the refrigeration and dehumidification cavity is connected to the connecting pipe 2, and the air flowing from the air outlet 11 to the air inlet 12 in the connecting pipe 2 can flow through the refrigeration and dehumidification cavity.

[0046] 3 , the first heat conducting fin assembly 43 includes a plurality of first heat conducting fins 431 , each of which is inserted into the refrigeration and dehumidification cavity, and a heat conducting fin surface of each first heat conducting fin 431 is arranged along the flow direction of air in the refrigeration and dehumidification cavity.

[0047] With such an arrangement, when the circulating air flows in the connecting pipe 2, it can pass through the refrigeration and dehumidification cavity, wherein the first heat-conducting fin assembly 43 is cooled by the semiconductor refrigeration sheet 42, and each first heat-conducting fin 431 of the first heat-conducting fin assembly 43 is inserted into the refrigeration and dehumidification cavity, thereby reducing the temperature in the refrigeration and dehumidification cavity, and can absorb the heat of the air flowing through the refrigeration and dehumidification cavity to cool the air. The cooled air then flows from the connecting pipe 2 to the air inlet 12 and enters the inner cavity, thereby achieving the purpose of cooling the components in the inner cavity. While cooling, the first heat-conducting fin assembly 43 can condense water vapor in the air, thereby achieving the effects of cooling and dehumidification. If only dehumidification or cooling is required, it can be achieved by setting other auxiliary structures. Other auxiliary structures can adopt existing technologies, as long as constant temperature dehumidification or constant humidity cooling can be achieved, and no limitation is made here.

[0048] Optionally, the semiconductor refrigeration sheet 42 may be mounted on the refrigeration box 41 , for example, by being connected by snapping, buckling or screwing.

[0049] It should be noted that the semiconductor cooling plate 42 is also called a thermoelectric cooling plate. It is a heat pump that utilizes the Peltier effect of semiconductor materials. When direct current passes through a galvanic couple composed of two different semiconductor materials connected in series, heat can be absorbed and released at both ends of the galvanic couple respectively, thereby achieving the purpose of cooling. It is characterized by no moving parts and relatively high reliability.

[0050] With this arrangement, when the semiconductor refrigeration chip 42 is working, its cooling surface is cooled, and the temperature of the refrigeration and dehumidification cavity is lowered through the first heat-conducting fin assembly 43, thereby reducing the temperature of the air passing through the refrigeration and dehumidification cavity. At the same time, the temperature of the heat dissipation surface is increased, and heat is dissipated through the second heat-conducting fin assembly 44.

[0051] Among them, the heat-conducting fin surface of each first heat-conducting fin 431 is arranged along the flow direction of the air in the refrigeration and dehumidification cavity, so that multiple refrigeration channels are formed in the first heat-conducting fins 431, thereby increasing the cooling area of ​​the air and improving the refrigeration efficiency; in addition, the refrigeration channels are arranged along the flow direction of the air in the refrigeration and dehumidification cavity, which reduces the resistance to the air flow caused by the first heat-conducting fins 431 to a certain extent, thereby reducing the power consumption of the air circulation machine 3.

[0052] Preferably, referring to Figure 6, in this embodiment, the second heat-conducting fin assembly 44 includes a second heat-conducting fin 441 arranged on the heat dissipation surface of the semiconductor refrigeration plate 42. Furthermore, the refrigeration and dehumidification mechanism also includes a fan 45, and the second heat-conducting fin assembly 44 is formed with a fan mounting groove, and the fan 45 is fixed in the fan mounting groove.

[0053] With this arrangement, when the temperature of the heat dissipation surface of the semiconductor refrigeration plate 42 rises, the high temperature can be transferred to the second heat-conducting fin assembly 44, causing the temperature of the second heat-conducting fin assembly 44 to rise, and the heat is dissipated to the heat dissipating fin assembly through the fan 45 to maintain the cooling effect of the semiconductor refrigeration plate 42.

[0054] Preferably, referring to FIG. 7 , in this embodiment, the first heat conducting fin assembly 43 and the second heat conducting fin assembly 44 are connected via a threaded connection member 46 such as a screw, a stud or a screw.

[0055] Preferably, referring to FIG. 5 , in this embodiment, the refrigeration and dehumidification mechanism further includes a condensed water collection component disposed at the bottom of the refrigeration box 41 and communicated with the refrigeration and dehumidification cavity.

[0056] With this arrangement, the air cooled in the refrigeration and dehumidification cavity can condense and liquefy to form water droplets, which can drip onto the condensation water collection component. The condensation-formed water droplets are collected by the condensation water collection component, thereby achieving the effect of dehumidifying the air.

[0057] Preferably, referring to Figures 5 and 6 , in this embodiment, the condensed water collection assembly includes a liquid collecting hopper 51 connected to the refrigeration and dehumidification chamber, and a collection bottle 52 disposed below and connected to the liquid collecting hopper 51. Preferably, the collection bottle 52 is detachably connected to the liquid collecting hopper 51, for example, by means of a snap, buckle, or screw connection, to facilitate the processing of the condensed water in the collection bottle 52.

[0058] Preferably, referring to FIG. 6 , in this embodiment, the collecting bottle 52 is provided with an observation window 53 for conveniently observing the height of the condensed water in the collecting bottle 52 .

[0059] Preferably, referring to FIG1 and combining with FIG2 , in this embodiment, the connecting pipe 2 includes a first connecting pipe 21 and a second connecting pipe 22. The first connecting pipe 21 and the second connecting pipe 22 are both arranged outside the power cabinet and are both connected to the inner cavity. The refrigeration and dehumidification mechanism is arranged in the first connecting pipe 21, and the air circulation machine 3 is arranged in the second connecting pipe 22. The air circulation machine 3 can be used to drive the air in the inner cavity to enter the first connecting pipe 21, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, it flows through the second connecting pipe 22 and returns to the inner cavity. In this way, by adopting the first connecting pipe 21 and the second connecting pipe 22 to arrange the refrigeration and dehumidification mechanism outside the power cabinet, the production, installation and maintenance of the refrigeration and dehumidification mechanism can be facilitated. For example, the refrigeration and dehumidification mechanism can be produced separately and installed on site. Moreover, by arranging the refrigeration and dehumidification mechanism outside the power cabinet, its working status can be observed very conveniently. When maintenance or replacement is required during use, it can be directly maintained or replaced without disassembling the power cabinet, which is convenient for maintenance. In addition, such an arrangement of the refrigeration and dehumidification device will not occupy the inner cavity space. In addition, the first connecting pipe 21 is used to install the refrigeration and dehumidification mechanism, and the second connecting pipe 22 is used to install the air circulation machine 3. The first connecting pipe 21 and the second connecting pipe 22 can be flexibly arranged, for example, as shown in Figure 1, they are arranged perpendicular to each other, so that the refrigeration and / or dehumidification have a sufficiently long circulation channel, and the refrigeration and / or dehumidification effect is better.

[0060] Preferably, referring to Figure 5, the refrigeration and dehumidification device also includes a third connecting pipe 23, one end of the first connecting pipe 21 is connected to the third connecting pipe 23, and the other end is connected to the second connecting pipe 22, the third connecting pipe 23 and the second connecting pipe 22 are respectively connected to the inner cavity, and the power cabinet is also provided with an air outlet 11 connected to the inner cavity, one end of the third connecting pipe 23 is connected to the air outlet 11, and the other end is set as an ash discharge port, the ash discharge port is provided with a sealing plate 61, and a filter assembly is provided in the third connecting pipe 23, and the filter assembly includes a filter cylinder 62.

[0061] Specifically, the third connecting pipe 23 can be set as a vertical pipe, the first connecting pipe 21 can be set as a horizontal pipe, the end of the first connecting pipe 21 that is connected to the third connecting pipe 23 is set close to the lower end of the third connecting pipe 23, and the ash discharge port is set at the lower end of the third connecting pipe 23. The air from the air outlet 11 first passes through the filter assembly and then enters the first connecting pipe 21.

[0062] With this arrangement, the sealing plate 61 is first used to close the ash discharge port, and then the air circulation machine 3 is turned on. At this time, the air in the inner cavity can enter the third connecting pipe 23 and the first connecting pipe 21 from the air outlet 11. Under the action of the refrigeration and dehumidification mechanism, the air is cooled, and the cooled air returns to the inner cavity through the second connecting pipe 22 and the air inlet 12.

[0063] The air entering the third connecting pipe 23 from the air outlet 11 inevitably contains impurities such as dust. These impurities in the third connecting pipe 23 can fall down and, during their fall, be filtered by the filter cartridge 62 and collected on the filter cartridge 62. Therefore, after the refrigeration and dehumidification device has been used for a period of time, the filter cartridge 62 can be removed from the dust discharge port by opening the sealing plate 61, cleaned, and then reinstalled. Therefore, the refrigeration and dehumidification device of this embodiment not only dehumidifies and dissipates heat from the air in the inner cavity, but also filters out dust from the air in the inner cavity, making it extremely practical.

[0064] Preferably, referring to Figure 2 , in this embodiment, the filter assembly further includes a retaining ring 64 connected to one end of the filter cartridge 62. A retaining ring 63 is also provided on the inner wall of the third connecting tube 23. One end of the filter cartridge 62 abuts against the retaining ring 63 via the retaining ring 64, while the other end abuts against the sealing plate 61. This arrangement allows the filter cartridge 62 to be removed by opening the sealing plate 61, and after the filter cartridge 62 is replaced, the sealing plate 61 can be closed, making operation simple and convenient, saving time and effort.

[0065] Optionally, the sealing plate 61 and the first tube portion 211 are connected by snapping, buckling or screwing, or are rotatably connected by a hinge.

[0066] Example 2

[0067] Embodiment 2 provides a power cabinet including the refrigeration and dehumidification device of Embodiment 1. The technical features of the refrigeration and dehumidification device disclosed in Embodiment 1 also apply to this embodiment, and the technical features of the refrigeration and dehumidification device disclosed in Embodiment 1 are not repeated here. The following describes the embodiment of the power cabinet in further detail with reference to the accompanying drawings.

[0068] Please refer to Figure 5. The power cabinet provided in this embodiment includes a cabinet body 1 and a refrigeration and dehumidification device. The cabinet body 1 is provided with an inner cavity, an air outlet 11 and an air inlet 12. The air outlet 11 and the air inlet 12 are both connected to the inner cavity, and the connecting pipe 2 of the refrigeration and dehumidification device is connected between the air outlet 11 and the air inlet 12.

[0069] The power cabinet is, for example, a distribution cabinet, a switch cabinet, or a power tool management cabinet. When dehumidification of the power cabinet is required, the air circulation unit 3 and the refrigeration and dehumidification mechanism of the refrigeration and dehumidification device are turned on. The air circulation unit 3 allows the air in the inner cavity to enter the connecting pipe 2 from the air outlet 11, flow along the connecting pipe 2 to the air inlet 12, and return to the inner cavity through the air inlet 12, thus achieving air circulation in the connecting pipe 2 and the inner cavity. Among them, the air in the connecting pipe 2 is cooled and / or dehumidified by the refrigeration and dehumidification mechanism. On the one hand, the cooled cold air returns to the inner cavity through the air inlet 12, which can cool the components, cables or power tools in the inner cavity, and has the effect of dissipating heat for the components, cables or power tools. On the other hand, the refrigeration and dehumidification mechanism can condense and liquefy the water vapor in the air flowing through the connecting pipe 2, thereby dehumidifying the air. The dry air returns to the inner cavity from the air inlet 12, which has the effect of dehumidifying the components, cables or power tools in the inner cavity, alleviating the technical problem of poor dehumidification effect of components in the distribution cabinet in the prior art.

[0070] With such a setting, the power cabinet itself has the function of dehumidification and heat dissipation, without relying on external equipment for dehumidification and heat dissipation, so that the inner cavity of the power cabinet has a good operating environment, and the heat dissipation effect is good and the dehumidification efficiency is high, which reduces the safety hazards of the power cabinet and enables the power cabinet to better serve data centers, computer rooms and other places.

[0071] Preferably, referring to FIG. 4 and FIG. 5 , in this embodiment, a cabinet door 71 is rotatably connected to the opening of the cabinet body 1 , and the cabinet door 71 can be rotated relative to the cabinet body 1 to open or close the opening.

[0072] 4 , the bottom of the cabinet 1 is provided with legs 72. Preferably, there are four legs 72, which are respectively provided at the four corners of the cabinet 1. The cabinet door 71 is provided with a handle 73 for easy opening and closing.

[0073] Preferably, referring to FIG. 5 and FIG. 8 , in this embodiment, the air inlet 12 and the air outlet 11 are both provided on the rear wall of the cabinet 1 , and the air inlet 12 and the air outlet 11 are respectively provided on both sides of the cabinet 1 along the height direction.

[0074] Further preferably, referring to Figure 5, in this embodiment, the refrigeration and dehumidification device is arranged on the outside of the cabinet 1, that is, on the side of the cabinet 1 away from the inner cavity. With this arrangement, the refrigeration and dehumidification device is not only easy to install and maintain, but also easy to repair in case of failure, and will not occupy the internal space of the cabinet 1.

[0075] Preferably, referring to FIG8 , in this embodiment, the power cabinet further includes a controller and a temperature and humidity sensor 81 , and the temperature and humidity sensor 81 , the air cycle machine 3 , and the refrigeration and dehumidification mechanism are all connected to the controller.

[0076] For example, the temperature and humidity sensor 81 is used to monitor the temperature and humidity of the inner cavity. When the temperature and humidity reach the preset maximum temperature and humidity, the controller controls the air circulation machine 3 and the refrigeration and dehumidification mechanism to start, and when the temperature and humidity of the inner cavity reach the preset minimum temperature and humidity, the controller controls the air circulation machine 3 and the refrigeration and dehumidification mechanism to shut down.

[0077] Preferably, the fan 45 and semiconductor cooling plate of the refrigeration and dehumidification mechanism are both connected to a controller. With this arrangement, the temperature and humidity of the inner cavity are monitored by the temperature and humidity sensor 81. When the temperature and humidity of the inner cavity reach a preset maximum temperature and humidity, a signal is sent to the controller, which in turn controls the air circulation unit 3, fan 45, and semiconductor cooling plate 42 to activate. The air circulation unit 3 circulates the air in the connecting pipe 2 and the inner cavity, cooling the air in the connecting pipe 2 through the semiconductor cooling plate 42. The fan 45 dissipates heat from the semiconductor cooling plate 42, and the cooled air returns to the inner cavity, cooling the components, cables, or power tools in the inner cavity. The air in the connecting pipe 2 condenses and liquefies, thus dehumidifying the components, cables, or power tools in the inner cavity. After the air circulation unit 3 and the refrigeration and dehumidification mechanism have been activated for a period of time, the temperature and humidity of the air in the inner cavity decrease until the temperature and humidity sensor 81 detects that the temperature and humidity of the inner cavity have reached a preset minimum temperature and humidity. At this point, a signal is sent to the controller, which in turn controls the air circulation unit 3, semiconductor cooling plate, and fan 45 to deactivate.

[0078] Preferably, referring to FIG. 4 , in this embodiment, the power cabinet further includes a control panel, which is integrated with the controller to form a control panel 82 . The control panel 82 is disposed on the cabinet door 71 to facilitate operation of the control panel 82 .

[0079] Preferably, referring to Figure 8, in this embodiment, the power cabinet also includes an installation device arranged in the inner cavity, and the installation device includes a mounting frame 91, and the mounting frame 91 is provided with a plurality of horizontal mounting bars 93 and a plurality of vertical mounting bars 96, and the plurality of horizontal mounting bars 93 and the plurality of vertical mounting bars 96 are provided with installation structures capable of installing components.

[0080] Since components are generally installed on the rear wall of the cabinet body 1 , preferably, referring to FIG. 8 , in this embodiment, the mounting device is provided on the rear wall.

[0081] With such an arrangement, the components in the power cabinet can be installed on the horizontal mounting bar 93 via the mounting structure on the horizontal mounting bar 93, or installed on the vertical mounting bar 96 via the mounting structure on the vertical mounting bar 96, or installed on both the horizontal mounting bar 93 and the vertical mounting bar 96 via a combination of the mounting structure on the horizontal mounting bar 93 and the mounting structure on the vertical mounting bar 96.

[0082] Preferably, the horizontal mounting bar 93 can move along the first direction of the cabinet 1, and the vertical mounting bar 96 can move along the second direction of the cabinet 1. The first direction and the second direction are arranged perpendicularly, so that the position of each mounting structure in the cabinet 1 can be adjusted, thereby facilitating the installation of electrical components.

[0083] For example, the first direction is the height direction, width direction, or depth direction of the cabinet 1, and the second direction is the height direction, width direction, or depth direction of the cabinet 1, and the first direction is different from the second direction. Preferably, in this embodiment, the first direction is the height direction of the cabinet 1, and the second direction is the width direction of the cabinet 1.

[0084] Preferably, referring to FIG8 , in this embodiment, the mounting frame 91 includes two vertical frames vertically arranged on the inner wall of the cabinet 1 and a horizontal frame connected between the two vertical frames, and a plurality of adjustment holes 92 are arranged on the vertical frames at intervals along the first direction, for example, the adjustment holes 92 are threaded holes.

[0085] Both ends of the transverse mounting bar 93 are provided with mounting holes 94. The transverse mounting bar 93 can be connected to the adjustment hole 92 through the mounting holes 94 by means of threaded connectors, and the position of the transverse mounting bar 93 along the first direction can be adjusted by connecting with different adjustment holes 92.

[0086] The mounting structure includes a first hole 95 provided in the horizontal mounting bar 93 and a second hole 97 provided in the vertical mounting bar 96. Components can be mounted on the horizontal mounting bar 93 through the first hole 95, or mounted on the vertical mounting bar 96 through the second hole 97, or mounted on the horizontal mounting bar 93 through the first hole 95 and the vertical mounting bar 96 through the second hole 97. Preferably, the first hole 95 is an elongated hole extending along the length of the horizontal mounting bar 93, and a plurality of first holes 95 are provided, with the plurality of first holes 95 being spaced apart along the length of the horizontal mounting bar 93; the second hole 97 is an elongated hole extending along the length of the vertical mounting bar 96, and a plurality of second holes 97 are provided, with the plurality of second holes 97 being spaced apart along the length of the vertical mounting bar 96.

[0087] Among them, the second hole 97 and the first hole 95 can be connected by a threaded connection so that the vertical mounting bar 96 is connected to the horizontal mounting bar 93, and the position of the vertical mounting bar 96 along the second direction of the cabinet 1 can be adjusted by adjusting the position of the second hole 97 relative to the first hole 95.

[0088] Preferably, in this embodiment, a plurality of transverse mounting bars 93 and a plurality of vertical mounting bars 96 are provided, so as to facilitate installation of a plurality of components in the cabinet 1 and installation of components at different positions.

[0089] In summary, the working principle of the power cabinet of this embodiment is as follows:

[0090] When the temperature and humidity sensor 81 detects that the temperature and humidity in the inner cavity have reached a preset maximum, it sends a signal to the controller, which in turn activates the air circulation unit 3, fan 45, and semiconductor cooling plate 42. The air circulation unit 3 then drives the air in the inner cavity out through the air outlet 11 to the third connecting pipe 23, then through the first connecting pipe 21 to the cooling and dehumidifying chamber, then to the second connecting pipe 22, and finally back into the inner cavity through the air inlet 12.

[0091] The semiconductor refrigeration plate 42 can transfer cold energy, cool down the first heat-conducting fin assembly 43, thereby reducing the temperature in the refrigeration and dehumidification cavity, and dissipate heat through the second heat-conducting fin assembly 44. On the one hand, the cooled cold air returns to the inner cavity through the air inlet 12, which can cool the components, cables or power tools in the inner cavity, and has the effect of dissipating heat for the components, cables or power tools. On the other hand, the air in the refrigeration and dehumidification cavity can condense and liquefy, so that the moisture in the inner cavity gathers in the refrigeration and dehumidification cavity to form water droplets that drip from the liquid collecting bucket to the collection bottle without returning to the inner cavity, thereby dehumidifying the components, cables or power tools in the inner cavity. At the same time, the fan 45 dissipates heat from the second heat-conducting fin assembly 44 to maintain the refrigeration effect of the semiconductor refrigeration plate.

[0092] When the air passes through the third connecting pipe 23, impurities in the air can enter the filter cylinder 62 and be retained in the filter cylinder 62, which has the effect of reducing dust in the air. After a period of time, the observation window can be observed. When there is a lot of water in the collection bottle, the collection bottle can be unscrewed for dumping. At the same time, after a period of time, the sealing plate 61 can be removed and the filter cylinder 62 can be pulled out from the ash discharge port for dumping, cleaning and maintenance.

[0093] During use, the installation position of the horizontal mounting bar 93 can be adjusted through the adjustment hole on the mounting frame, and the installation position of the vertical mounting bar 96 can be changed by selecting the first hole on the horizontal mounting bar 93. In addition, the electrical components of the distribution cabinet can be installed by selecting the first hole and the second hole on the horizontal mounting bar 93 and the vertical mounting bar 96.

[0094] The power cabinet of this embodiment has the advantages of the refrigeration and dehumidification device of the first embodiment, which have been described in detail in the first embodiment and will not be repeated here.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0096] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigeration and dehumidification device, characterized in that: Used in an electric power cabinet, the electric power cabinet is provided with an inner cavity; The refrigeration and dehumidification device includes a connecting pipe with both ends connected to the inner cavity. An air circulation machine and a refrigeration and dehumidification mechanism are arranged on the connecting pipe. The air circulation machine can be used to drive the air in the inner cavity to enter the connecting pipe, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, the air returns to the inner cavity through the connecting pipe.

2. The refrigeration and dehumidification device according to claim 1, characterized in that: The refrigeration and dehumidification mechanism comprises a refrigeration and dehumidification cavity, a first heat-conducting fin assembly, a second heat-conducting fin assembly arranged above the first heat-conducting fin assembly, and a semiconductor refrigeration sheet clamped between the first heat-conducting fin assembly and the second heat-conducting fin assembly; The first heat-conducting fin assembly includes a plurality of first heat-conducting fins, each of which is inserted into the refrigeration and dehumidification cavity, and a heat-conducting fin surface of each of the first heat-conducting fins is arranged along the flow direction of air in the refrigeration and dehumidification cavity.

3. The refrigeration and dehumidification device according to claim 2, characterized in that: The refrigeration and dehumidification mechanism further includes a fan, the second heat-conducting fin assembly is formed with a fan mounting groove, and the fan is fixed in the fan mounting groove.

4. The refrigeration and dehumidification device according to claim 2, characterized in that: The refrigeration and dehumidification device is further provided with a liquid collecting hopper communicated with the refrigeration and dehumidification cavity, and a collecting bottle communicated with the liquid collecting hopper.

5. The refrigeration and dehumidification device according to claim 1, characterized in that: The connecting pipe includes a first connecting pipe and a second connecting pipe, wherein the first connecting pipe and the second connecting pipe are both arranged outside the power cabinet and are both connected to the inner cavity; The refrigeration and dehumidification mechanism is arranged on the first connecting pipe, and the air circulation machine is arranged on the second connecting pipe. The air circulation machine can be used to drive the air in the inner cavity to enter the first connecting pipe, and after being cooled and / or dehumidified by the refrigeration and dehumidification mechanism, the air flows through the second connecting pipe and returns to the inner cavity.

6. The refrigeration and dehumidification device according to claim 5, characterized in that: The refrigeration and dehumidification device further includes a third connecting pipe, one end of the first connecting pipe is connected to the third connecting pipe, and the other end of the first connecting pipe is connected to the second connecting pipe, and the third connecting pipe and the second connecting pipe are connected to the inner cavity respectively; The electric power cabinet is also provided with an air outlet connected to the inner cavity, one end of the third connecting pipe is connected to the air outlet, and the other end is provided as an ash discharge port, and the ash discharge port is provided with a sealing plate.

7. The refrigeration and dehumidification device according to claim 6, characterized in that: A filter assembly is arranged in the third connecting tube, and the filter assembly includes a filter cylinder and a butt ring connected to one end of the filter cylinder. A retaining ring is also arranged on the inner wall of the third connecting tube. One end of the filter cylinder is abutted against the retaining ring through the butt ring, and the other end thereof is abutted against the sealing plate.

8. An electric power cabinet, characterized in that: It comprises a cabinet and the refrigeration and dehumidification device according to any one of claims 1 to 7, wherein the cabinet is provided with an inner cavity and an air outlet and an air inlet both connected to the inner cavity, and a connecting pipe of the refrigeration and dehumidification device is connected between the air outlet and the air inlet.

9. The electric power cabinet according to claim 8, characterized in that: The power cabinet also includes a controller and a temperature and humidity sensor. The temperature and humidity sensor, the air circulation machine and the refrigeration and dehumidification mechanism are all connected to the controller.

10. The power cabinet according to claim 8, characterized in that: The power cabinet also includes a mounting device disposed in the inner cavity; The mounting device comprises a mounting frame, and the mounting frame is provided with a plurality of transverse mounting bars and a plurality of vertical mounting bars, and the plurality of transverse mounting bars and the plurality of vertical mounting bars are all provided with mounting structures capable of mounting components.

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