Low-voltage switchgear assembly
By setting up airflow channels and air supply modules inside the low-voltage switchgear, the problem of poor heat dissipation of the equipment was solved, and effective heat dissipation of high-current ACB circuit breakers, heating elements and current-carrying busbars was achieved, ensuring stable internal temperature of the equipment.
Patent Information
- Application Number
- CN202423089945.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-14
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-14
AI Technical Summary
The heat dissipation effect of existing low-voltage switchgear is poor, especially for high-current ACB circuit breakers, heat-generating elements and current-carrying busbars, which lack dedicated heat dissipation mechanisms.
An airflow channel is set up inside the cabinet, and an air supply module is equipped, including a fan assembly and a control assembly. An effective heat dissipation system is formed through the airflow channel and the air supply module. The crossflow fan and temperature and humidity sensors are used to monitor and control the equipment temperature in real time, so as to achieve rapid cooling or natural heat dissipation.
Effective temperature control of each functional unit enables rapid cooling and natural heat dissipation within the equipment, ensuring that the temperature remains within the set range and improving the equipment's heat dissipation efficiency.
Smart Images
Figure CN223744161U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of power equipment, in particular to a low-voltage switchgear. BACKGROUND
[0002] The low-voltage switchgear refers to the complete equipment that low-voltage switches, protection appliances, measuring instruments, busbars, wires and other low-voltage components are assembled together in a low-voltage distribution system.
[0003] The structure layout of the existing low-voltage switchgear is mainly divided according to the function area, various separation forms are formed, and the internal heat dissipation mainly adopts the mode that the heat dissipation holes are arranged at the bottom of the equipment body of the switchgear and the fan is arranged at the upper part of the equipment body, refer to Figure 4 However, the special heat dissipation mechanism is not arranged for the large-current ACB circuit breaker, the heating component and the current-carrying busbar. CONTENT OF THE UTILITY MODEL
[0004] In view of the above or the poor heat dissipation effect in the switchgear in the prior art, the utility model is provided.
[0005] Therefore, the utility model aims at providing a low-voltage switchgear.
[0006] In order to solve the above technical problems, the utility model provides the following technical scheme: a cabinet body, the cabinet body is internally provided with an airflow channel, and a heat dissipation end corresponding to one end of the airflow channel is arranged on the cabinet body; and an air supply module, which comprises a fan assembly and a control assembly; the fan assembly is arranged at the other end of the airflow channel, and the control assembly is arranged in the airflow channel.
[0007] As a preferred scheme of the utility model low-voltage switchgear, the heat dissipation end comprises a heat dissipation cover, the heat dissipation cover is arranged in the shape of a cuboid, comprises four heat dissipation side plates and a top plate, the four heat dissipation side plates are provided with air vents, and the air vents are provided with mesh plates.
[0008] As a preferred scheme of the utility model low-voltage switchgear, the cabinet body comprises a first side wall where the long edges are arranged oppositely and a second side wall where the short edges are arranged oppositely.
[0009] As a preferred scheme of the utility model low-voltage switchgear, the second side wall adjacent to one side in the cabinet body is sequentially provided with a fan compartment, an instrument room and a functional unit compartment from bottom to top; the second side wall adjacent to the other side is provided with an outgoing line unit compartment; and the fan compartment, the instrument room, the functional unit compartment and the outgoing line unit compartment are horizontally spaced.
[0010] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: the main function unit compartment and the outgoing line unit compartment upper portion are provided with a main busbar room.
[0011] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: the main busbar room comprises an upper partition plate and a lower partition plate, and the upper partition plate and the lower partition plate are formed by plates.
[0012] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: the air flow channel comprises four groups of side plates, a first group of side plates comprises a part of a first side wall on one side of the cabinet, a second group of side plates comprises a part of a first side wall on the other side of the cabinet, a third group of side plates comprises a flow guide air duct bent plate, an outgoing line unit rear partition plate, a busbar room rear partition plate and a busbar frame rear fixed plate, and a fourth group of side plates comprises a fan mounting plate, an instrument room rear partition plate, a function unit rear partition plate one and a function unit rear partition plate two, a busbar room front partition plate and a busbar frame front fixed plate.
[0013] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: the first group of side plates, the second group of side plates, the third group of side plates and the fourth group of side plates are sequentially connected.
[0014] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: an included angle is arranged between the bottom and the upper portion of the flow guide air duct bent plate.
[0015] As a preferred scheme of the low-voltage complete switchgear of the utility model, wherein: the cabinet further comprises an air inlet grid, and the air inlet grid is arranged at the lower portion of the second side wall.
[0016] The low-voltage complete switchgear has the following beneficial effects: through the arrangement of the installation positions of the various function units in the equipment, an air flow channel is formed in the equipment, so that the various function units in the equipment are effectively temperature-controlled; through the arrangement of the cross-flow fan and the temperature and humidity sensor, the temperature in the equipment can be monitored in real time; if the temperature in the equipment is too high, the cross-flow fan can quickly reduce the temperature in the equipment by blowing air into the air flow channel; and if the temperature in the equipment remains below the set value, the air flow channel can be naturally ventilated to dissipate heat. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.
[0018] Figure 1 It is an internal schematic view of the low-voltage complete switchgear.
[0019] Figure 2 is a side view of the low-voltage switchgear.
[0020] Figure 3 is a sectional view along A-A of Figure 2
[0021] Figure 4 is a schematic view of the existing heat dissipation mode of the low-voltage switchgear. DETAILED DESCRIPTION
[0022] In order to make the above objectives, characteristics and advantages of the present application more apparent, comprehensible and easier to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.
[0023] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.
[0024] Secondly, the "one embodiment" or "embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. In different places in this specification, "in one embodiment" does not mean the same embodiment, nor is it an independent or alternative embodiment that excludes other embodiments.
[0025] Embodiment 1, with reference to Figures 1 to 3 The first embodiment of the present application provides a low-voltage switchgear, which can meet the temperature rise limit requirement of the switchgear under various application conditions.
[0026] Specifically, the cabinet 100 is provided with an air flow channel M inside, the cabinet 100 is provided in the form of a rectangular shell, the air flow channel M is arranged inside the cabinet 100, and the air flow channel M can realize the exchange of hot air generated by the operation of each functional unit in the cabinet 100 under natural conditions with external air of the equipment.
[0027] The cabinet 100 includes a first side wall 101a located at the long side and a second side wall 101b located at the short side, and an air inlet grille 101c.
[0028] Further, the air inlet grille 101c is installed at the lower part of the second side wall 101b, and the air inlet grille 101c allows external air to enter the cabinet 100, so as to ventilate and cool each functional unit in the cabinet 100.
[0029] The cabinet body 100 further comprises a fan compartment 103, an instrument compartment 104, a functional unit compartment 105, a main busbar compartment 106, and an outgoing line unit compartment 107.
[0030] The fan compartment 103, the instrument compartment 104, and the functional unit compartment 105 are arranged in sequence from the middle part of the interior of the cabinet body 100 to the upper part, and each of the functional units is fixed in the cabinet body 100 by means of bolting or plug-in connection.
[0031] It should be noted that the fan compartment 103, the instrument compartment 104, the functional unit compartment 105, and the outgoing line unit compartment 107 are arranged transversely to form an installation gap; and the functional unit compartment 105 and the outgoing line unit compartment 107 are provided with the main busbar compartment 106 at the upper part, which is fixed in the cabinet body 100 by bolting.
[0032] Further, the main busbar compartment 106 comprises an upper partition plate and a lower partition plate, which are made of IP2X plates, so that the airflow in the installation gap can pass through the main busbar compartment 106, meeting the temperature control requirement in the main busbar compartment 106. The upper partition plate of the main busbar compartment 106 is installed in the window of the top plate of the cabinet body 100, so that the main busbar compartment 106 becomes part of the airflow passage M, realizing the airflow exchange between the airflow passage M and the outside of the cabinet body 100.
[0033] The installation gap, the first side wall 101a, and the second side wall 101b form the airflow passage M.
[0034] That is, the airflow passage M comprises four groups of side plates, the first group of side plates comprises a part of the first side wall 101a on one side of the cabinet body 100, the second group of side plates comprises a part of the first side wall 101a on the other side of the cabinet body 100, the third group of side plates comprises the flow guide air duct bent plate 102, the outgoing line unit rear partition plate 109, the busbar compartment rear partition plate 110, and the busbar frame rear fixed plate 111, and the fourth group of side plates comprises the fan mounting plate 113, the instrument compartment rear partition plate 112, the functional unit rear partition plate 114, the functional unit rear partition plate 115, the busbar compartment front partition plate 116, and the busbar frame front fixed plate 108. The flow guide air duct bent plate 102, the outgoing line unit rear partition plate 109, the busbar compartment rear partition plate 110, and the busbar frame rear fixed plate 111 abut against each other in sequence; the fan mounting plate 113, the instrument compartment rear partition plate 112, the functional unit rear partition plate 114, the functional unit rear partition plate 115, the busbar compartment front partition plate 116, and the busbar frame front fixed plate 108 abut against each other in sequence.
[0035] The first group of side plates, the second group of side plates, the third group of side plates, and the fourth group of side plates are connected in sequence to form the airflow passage M.
[0036] Embodiment 2, refer to Figures 1-3 , the second embodiment of the utility model, different from the last embodiment is that, this embodiment provides the heat dissipation component of low-voltage switchgear, solves the dustproof problem at the equipment heat dissipation port and the like.
[0037] It includes a heat dissipation end, the heat dissipation end includes a heat dissipation cover 200, the heat dissipation cover 200 is cuboid setting, including four heat dissipation side plates 201 and top plate 202, heat dissipation side plate 201 and top plate 202 are fixedly connected by bolt.
[0038] Four heat dissipation side plates 201 are fixed on the top plate of the cabinet body 100 respectively, and correspond to the window formed on the top plate of the cabinet body 100.
[0039] Each heat dissipation side plate 201 is provided with a ventilation opening 203, and an IP40 mesh plate is installed in the ventilation opening 203, which can meet the air circulation demand and also play a dustproof role.
[0040] The remaining structures are the same as in embodiment 1.
[0041] Embodiment 3, refer to Figures 1-3 , the third embodiment of the utility model, different from the last embodiment is that, this embodiment provides low-voltage switchgear, solves the problem of poor cooling effect.
[0042] Specifically includes a supply air module 300, the supply air module 300 includes a fan assembly 301 and a control assembly 302, the fan assembly 301 is preferably a cross-flow fan in the embodiment, and any device capable of continuously providing supply air can be used in the device, the cross-flow fan is installed between the guide air duct elbow plate 102 and the instrument room rear partition 112 through the fan mounting plate 113.
[0043] Preferably, a 90-degree angle is arranged between the lower part and the upper part of the guide air duct elbow plate 102, and a transition inclined surface is processed between the lower part and the upper part of the guide air duct elbow plate 102, so as to facilitate the airflow generated by the fan assembly 301.
[0044] The control assembly 302 can be set as a temperature and humidity sensor or a current sensor, and the temperature and humidity sensor or the current sensor is bolted to the lower side of the main busbar room 106 in the airflow passage M to sense the temperature and humidity in the cabinet, and the temperature of the temperature and humidity sensor or the current sensor itself is controlled at the same time with the regulation of the temperature in the cabinet.
[0045] The fan assembly 301 is controlled by the control assembly 302, and when the temperature in the cabinet reaches the preset temperature, the cross-flow fan is started, the cross-flow fan accelerates air circulation to rapidly reduce the temperature in the cabinet; when the temperature in the cabinet is reduced below the preset temperature, the cross-flow fan is controlled to be closed, and the natural ventilation and heat dissipation in the equipment are maintained through the airflow passage.
[0046] In addition, when the current sensor is used, the current sensor controls the start of the cross-flow fan when the detected current value of each functional unit in the cabinet reaches the preset current value, and vice versa.
[0047] The remaining structures are the same as those of the foregoing embodiments.
[0048] In use, two cases are handled respectively:
[0049] The first case is that the control assembly 302 detects that the temperature in the cabinet is lower than the set temperature, the fan assembly 301 remains dormant, the external air enters the airflow channel M through the air inlet grille 101c, and then escapes from the heat dissipation end, so as to realize the exchange of external air and air in the cabinet, and to maintain the temperature in the cabinet in a natural heat dissipation manner, that is, the natural heat dissipation of the switch device.
[0050] The second case is that the control assembly 302 detects that the temperature in the cabinet is above the set temperature, the control assembly 302 controls the start of the cross-flow fan, the cross-flow fan accelerates the airflow in the airflow channel M, so as to quickly reduce the temperature of the cabinet, that is, the passive rapid cooling of the switch device; when the temperature in the cabinet is reduced to below the preset temperature, the cross-flow fan is closed again, and the natural ventilation and heat dissipation of the cabinet are maintained through the airflow channel.
[0051] In summary, the utility model forms the airflow channel M in the equipment through the setting of the installation positions of the functional units in the equipment, so that the temperature of each functional unit in the equipment is effectively controlled; through the setting of the fan assembly 301 and the control assembly 302, the temperature in the equipment can be monitored in real time, if the temperature in the equipment is too high, the fan assembly 301 can send air to the airflow channel M to quickly reduce the temperature in the equipment, and if the temperature in the equipment remains below the set value, the natural ventilation and heat dissipation of the airflow channel M can be used.
[0052] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein. For example, elements described as integrated in a single unit can be separated, elements described as separate can be integrated, and the position, number, shape, and arrangements of elements can be varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the general nature of the claims. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.
[0053] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those pertaining to the
[0054] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to a number of substitutions, modifications, changes, and omissions of parts illustrated as having a specific configuration. Such are the natural consequences of research and development efforts, and
[0055] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.
Claims
1. Low voltage switchgear assembly, characterized in that: The low-voltage switchgear device comprises a cabinet (100) having an air flow channel (M) therein, a heat dissipation end provided on the cabinet (100) and corresponding to one end of the air flow channel (M), and a supply air module (300) comprising a fan assembly (301) and a control assembly (302), wherein the fan assembly (301) is arranged at the other end of the air flow channel (M), and the control assembly (302) is arranged in the air flow channel (M). The cabinet (100) comprises a first side wall (101a) with opposite long sides and a second side wall (101b) with opposite short sides, and the second side wall (101b) adjacent to one side of the cabinet (100) is sequentially provided with a fan compartment (103), an instrument room (104) and a functional unit compartment (105) from bottom to top, the second side wall (101b) adjacent to the other side is provided with an outgoing line unit compartment (107), and the fan compartment (103), the instrument room (104), the functional unit compartment (105) and the outgoing line unit compartment (107) are arranged transversely. The functional unit compartment (105) and the outgoing line unit compartment (107) are provided with a main busbar room (106) at the upper portion, the main busbar room (106) comprises an upper partition plate and a lower partition plate, the upper partition plate and the lower partition plate are composed of IP2X plates, the air flow channel (M) comprises four groups of side plates, a first group of side plates comprises a part of the first side wall (101a) on one side of the cabinet (100), a second group of side plates comprises a part of the first side wall (101a) on the other side of the cabinet (100), a third group of side plates comprises a flow guide air duct bent plate (102), an outgoing line unit rear partition plate (109), a busbar room rear partition plate (110) and a busbar frame rear fixed plate (111), and a fourth group of side plates comprises a fan mounting plate (113), an instrument room rear partition plate (112), a functional unit rear partition plate one (114) and a functional unit rear partition plate two (115), a busbar room front partition plate (116) and a busbar frame front fixed plate (108).
2. The low-voltage switchgear device according to claim 1, wherein the heat dissipation end comprises a heat dissipation cover (200) in the shape of a rectangular parallelepiped, comprising four heat dissipation side plates (201) and a top plate (202), the four heat dissipation side plates (201) are provided with air vents (203), and the air vents (203) are provided with IP40 mesh plates.
3. The low-voltage switchgear device according to claim 1, wherein the first group of side plates, the second group of side plates, the third group of side plates and the fourth group of side plates are sequentially connected.
4. The low-voltage switchgear device according to any one of claims 1-3, wherein a 90-degree angle is arranged between the bottom and the upper portion of the flow guide air duct bent plate (102).
5. The low-voltage switchgear device according to claim 4, wherein the cabinet (100) further comprises an air inlet grille (101c) arranged at the lower portion of the second side wall (101b).