Electrical equipment

Abstract

The application discloses an electrical device, comprising: a housing having at least one of a first cavity and a second cavity and a discharge assembly; the first cavity is provided with an air inlet, an air outlet and a sand and dust discharge port which are communicated with the external environment; on an airflow path from the air inlet to the air outlet, the dust discharge port is positioned between the air inlet and the air outlet; a discharging assembly is arranged at the sand and dust discharging opening, and the discharging assembly can close and open the sand and dust discharging opening; the second cavity is relatively isolated from the external environment of the shell, at least one of a sand and dust filtering assembly and a first sand and dust detector is arranged in the second cavity, and the first sand and dust detector is used for detecting the sand and dust concentration in the second cavity. According to the electrical equipment, the influence of dust on the electrical equipment is reduced, and the working stability of the electrical equipment is improved.

Description

Technical Field

[0001] This application relates to the field of dust prevention technology for electrical equipment, and more specifically, to an electrical device. Background Technology

[0002] Electrical equipment typically uses air cooling. Specifically, the internal cavity of the electrical equipment is connected to the external environment, making it easier for dust from the external environment to enter the electrical equipment. For example, dust from harsh environments such as deserts and Gobi Deserts can easily enter the electrical equipment.

[0003] Dust that enters electrical equipment can accumulate inside, causing internal components to malfunction and resulting in poor operational stability of the equipment.

[0004] In conclusion, how to reduce the impact of sand and dust on electrical equipment in order to improve the operational stability of electrical equipment is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an electrical device that reduces the impact of sand and dust on the electrical device, thereby improving the operational stability of the electrical device.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] An electrical device, comprising:

[0008] A housing having at least one of a first cavity and a second cavity;

[0009] The first cavity has an air inlet, an air outlet, and a dust emission outlet, all for communicating with the external environment; the dust emission outlet is located between the air inlet and the air outlet on the airflow path from the air inlet to the air outlet; the dust emission outlet is provided with an emission component, which can close and open the dust emission outlet.

[0010] The second cavity is relatively isolated from the external environment of the shell. At least one of a sand and dust filter assembly and a first sand and dust detector is provided in the second cavity. The first sand and dust detector is used to detect the sand and dust concentration in the second cavity.

[0011] Optionally, if the housing has a first cavity:

[0012] The first cavity contains a first device, and the cross-sectional area of ​​the first air duct in the first cavity at the first device is smaller than the cross-sectional area of ​​the first air duct upstream of the first device; on the airflow path from the air inlet to the air outlet, at least a portion of the dust emission outlet is located upstream of the first device.

[0013] Optionally, the dust emission outlet has a first edge near the air inlet and a second edge near the air outlet, and the second edge and the windward side of the first device are aligned along the airflow path from the air inlet to the air outlet.

[0014] Optionally, if the housing has a first cavity:

[0015] The emission assembly includes a cover plate and a drive component, wherein the drive component is connected to the cover plate and drives the cover plate to move to open and close the dust emission port.

[0016] Optionally, the emission assembly further includes a bracket disposed at the dust emission outlet, and the cover plate is connected to the bracket.

[0017] Optionally, there are at least two cover plates arranged side by side, and the driving component drives all the cover plates to move synchronously.

[0018] Optionally, a second dust detector is provided in the first cavity. The second dust detector is used to detect the dust concentration in the first cavity, and the driving component is connected to the second dust detector.

[0019] Optionally, a first device is disposed in the first cavity, and the cross-sectional area of ​​the first air duct in the first cavity at the first device is smaller than the cross-sectional area of ​​the first air duct upstream of the first device; on the airflow path from the air inlet to the air outlet, the dust emission outlet is located upstream of the first device.

[0020] The second dust detector includes a first dust sensor for detecting the dust concentration in the first cavity. The first dust sensor is located upstream of the first device and is connected to the driving component. Alternatively, the second dust detector includes a first dust sensor and a second dust sensor, both for detecting the dust concentration in the first cavity. The first dust sensor is located upstream of the first device, and the second dust sensor is located downstream of the first device. Both the first dust sensor and the second dust sensor are connected to the driving component.

[0021] Optionally, if the housing has a first cavity:

[0022] A first fan is installed inside the first cavity, and the first fan is located upstream of the dust emission outlet on the airflow path from the air inlet to the air outlet.

[0023] Optionally, when the dust emission outlet is closed, the first fan operates at a first speed; when the dust emission outlet is open, the first fan operates at a second speed, and the second speed is greater than the first speed.

[0024] Optionally, if the housing has a first cavity:

[0025] The air outlet is provided with an air outlet plate, the air outlet plate has air outlet holes, and the air outlet plate is inclined relative to the horizontal direction;

[0026] And / or, the air inlet is provided with at least one of a filter element and a waterproof louver.

[0027] Optionally, in the case where the housing has a first cavity and a second cavity:

[0028] The second cavity is relatively isolated from the first cavity, and the second cavity exchanges heat with the first cavity through a heat exchanger.

[0029] Optionally, if the housing has a second cavity and a sand and dust filter assembly is disposed within the second cavity:

[0030] The second cavity is equipped with a second fan, and the dust filter assembly is disposed on the second fan, and the dust filter assembly is located on at least one side of the inlet side and outlet side of the second fan.

[0031] Optionally, the second fan is provided with a guide rail, the dust filter assembly is disposed on the guide rail, and the guide rail supports the dust filter assembly;

[0032] Alternatively, the second fan may be provided with a mounting frame, to which the dust filter assembly is connected.

[0033] Optionally, if the housing has a second cavity and a sand and dust filter assembly is disposed within the second cavity:

[0034] The dust filtration assembly includes: a first clamping plate, a second clamping plate, and filter cotton, wherein the filter cotton is located between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are connected and clamp the filter cotton.

[0035] Alternatively, the dust filtration assembly may include: a support frame and a dust adsorption bag disposed on the support frame.

[0036] Optionally, if the housing has a second cavity and the first dust detector is disposed in the second cavity, the electrical device further includes an alarm connected to the first dust detector.

[0037] In the electrical equipment provided in this application, the first cavity of the housing has an air inlet, an air outlet, and a dust discharge port, all for communicating with the external environment. The dust discharge port is located between the air inlet and the air outlet along the airflow path from the air inlet to the air outlet, and the discharge assembly can close and open the dust discharge port. Thus, by closing the dust discharge port with the discharge assembly, the airflow entering from the air inlet is discharged through the air outlet, achieving heat dissipation for the first cavity and its internal components. By opening the dust discharge port with the discharge assembly, most of the airflow entering from the air inlet is discharged through the dust discharge port, and the dust deposited upstream of the dust discharge port is discharged through the dust discharge port under the action of the airflow, reducing the amount of dust deposited inside the electrical equipment. This reduces the probability of component failure within the first cavity, lowers the impact of dust on the electrical equipment, and improves the operational stability of the electrical equipment.

[0038] In the electrical equipment provided in this application, a sand and dust filter assembly is installed in the second cavity of the housing. This assembly can filter out sand and dust and other foreign objects in the second cavity, reducing the impact of sand and dust on the components inside the second cavity, thereby reducing the impact of sand and dust on the electrical equipment and improving the operational stability of the electrical equipment. A first sand and dust detector is installed in the second cavity to detect the sand and dust concentration inside the second cavity. This allows maintenance personnel to monitor the sand and dust concentration inside the second cavity in a timely manner and clean the sand and dust inside the second cavity, reducing the impact of sand and dust on the electrical equipment, improving the operational stability of the electrical equipment, and also improving the operational reliability of the electrical equipment. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the structure of a closed dust emission outlet in an electrical device provided in an embodiment of this application;

[0041] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0042] Figure 3 This is a schematic diagram of the structure of the dust emission port in the electrical equipment provided in the embodiments of this application;

[0043] Figure 4 This is a schematic diagram of the structure of the emission component in the electrical equipment provided in the embodiments of this application;

[0044] Figure 5This is a schematic diagram of the installation of a dust filter assembly in an electrical device provided in an embodiment of this application;

[0045] Figure 6 for Figure 5 Schematic diagram of the structure of the second fan in the middle;

[0046] Figure 7 for Figure 5 Schematic diagram of the structure of the medium dust filter assembly;

[0047] Figure 8 This is a schematic diagram of the installation of a dust filter assembly in an electrical device provided in an embodiment of this application;

[0048] Figure 9 for Figure 8 Schematic diagram of the structure of the second fan in the middle;

[0049] Figure 10 for Figure 8 A schematic diagram of the structure of a medium-dust filtration component.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1-Shell, 101-First cavity, 1011-Air inlet, 1012-Air outlet, 1013-Dust emission outlet, 1014-First air duct, a-First edge, b-Second edge, 102-Second cavity;

[0052] 2-Emission assembly, 201-Cover plate, 202-Drive component, 203-Bracket, 204-First transmission component, 205-First hinge shaft, 206-Second hinge shaft, 207-Second transmission component;

[0053] 3-First component, 31-Windward side;

[0054] 4-Second dust detector, 401-First dust sensor, 402-Second dust sensor;

[0055] 5-First fan;

[0056] 6-Waterproof louvers;

[0057] 7-Air outlet plate, 71-Air outlet hole;

[0058] 8-Heat exchanger;

[0059] 9-Dust filtration assembly, 901-First clamping plate, 902-Second clamping plate, 903-Filter cotton, 904-Support frame, 905-Dust adsorption bag;

[0060] 10-Second fan, 1001-Fan mounting plate, 1002-Fan body, c-Inlet side, d-Outlet side;

[0061] 11 guide rails;

[0062] 12-Mounting frame;

[0063] 13-First dust detector, 1301-Third dust sensor, 1302-Fourth dust sensor;

[0064] 14-Second device;

[0065] 15-Partition;

[0066] 16 - First connector;

[0067] 17-First connector;

[0068] 18-Filter components;

[0069] 19-Alarm. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0071] The terminology used in the following embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to also include expressions such as “one or more,” unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, “one or more” means one, two, or more; “and / or” describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character “ / ” generally indicates that the preceding and following related objects are in an “or” relationship.

[0072] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0073] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0074] The term "perpendicular" in this application refers to "basic perpendicularity" in actual operation. "Basic perpendicularity" can be understood as perpendicularity with a certain degree of error.

[0075] like Figure 1 As shown, the electrical equipment provided in this application embodiment includes a housing 1 and a discharge assembly 2.

[0076] The housing 1 has a first cavity 101 and a second cavity 102.

[0077] The first cavity 101 has an air inlet 1011, an air outlet 1012, and a dust emission outlet 1013, all of which are used to communicate with the external environment. The dust emission outlet 1013 is located between the air inlet 1011 and the air outlet 1012 in the airflow path from the air inlet 1011 to the air outlet 1012.

[0078] It should be noted that the external environment refers to the environment outside the shell 1.

[0079] The emission assembly 2 is located at the dust emission outlet 1013, and the emission assembly 2 is capable of closing and opening the dust emission outlet 1013.

[0080] like Figure 1 As shown, by closing the dust emission port 1013 through the emission assembly 2, the airflow entering from the air inlet 1011 is discharged through the air outlet 1012, thus achieving heat dissipation of the first cavity 101 and its internal components; as Figure 2As shown, the dust emission port 1013 is opened by the emission component 2. Since the dust emission port 1013 is located between the air inlet 1011 and the air outlet 1012 on the airflow path from the air inlet 1011 to the air outlet 1012, most of the airflow entering from the air inlet 1011 is discharged through the dust emission port 1013. The dust deposited upstream of the dust emission port 1013 is discharged through the dust emission port 1013 under the action of the airflow, reducing the dust deposited inside the electrical equipment, thereby reducing the probability of device failure in the first cavity, reducing the impact of dust on the electrical equipment, and improving the working stability of the electrical equipment.

[0081] It should be noted that the air resistance of the duct between the air inlet 1011 and the dust emission outlet 1013 is less than that between the air inlet 1011 and the air outlet 1012. After the dust emission outlet 1013 is opened by the emission assembly 2, a small portion of the airflow entering from the air inlet 1011 is discharged through the air outlet 1012, which can remove the dust downstream of the emission assembly 2.

[0082] The aforementioned electrical equipment can expel deposited sand and dust, reducing the likelihood of regular manual cleaning and thus reducing the maintenance frequency of the equipment. It also reduces the chance of sand and dust clogging the air inlet and outlet, ensuring the heat dissipation efficiency and improving the heat dissipation stability of the equipment.

[0083] Continue to refer to Figure 1 The first cavity 101 is provided with a first device 3, which can be one or more. For example, the electrical equipment is an inverter, and the first device 3 can be a reactor.

[0084] The cross-sectional area of ​​the first air duct 1014 within the first cavity 101 at the first device 3 is smaller than the cross-sectional area of ​​the first air duct 1014 upstream of the first device 3. This makes it easier for dust to deposit upstream of the first device 3. To facilitate the removal of deposited dust, at least a portion of the dust discharge port 1013 is located upstream of the first device 3 along the airflow path from the air inlet 1011 to the air outlet 1012.

[0085] Along the airflow path from the air inlet 1011 to the air outlet 1012, the dust emission outlet 1013 has a first edge a near the air inlet 1011 and a second edge b near the air outlet 1012. Specifically, along the airflow path from the air inlet 1011 to the air outlet 1012, the first edge a is located upstream of the windward surface 31 of the first device 3.

[0086] The closer the dust emission outlet 1013 is to the first device 3, the better the dust emission effect. Specifically, the smaller the distance between the second edge b and the windward surface 31 of the first device 3 along the airflow path from the air inlet 1011 to the air outlet 1012, the better the dust emission effect. Based on this, the second edge b and the windward surface 31 of the first device 3 are aligned along the airflow path from the air inlet 1011 to the air outlet 1012. In this way, the entire dust emission outlet 1013 is used to discharge dust, improving the dust emission effect.

[0087] In practice, the second edge b can also be located upstream or downstream of the windward surface 31 of the first device 3 along the airflow path from the air inlet 1011 to the air outlet 1012, and is not limited to the above embodiment.

[0088] In electrical equipment, the specific structure of the emission assembly 2 is selected according to the actual situation. In some embodiments, the emission assembly 2 includes a movable cover 201. The cover 201 is moved by an operator to open and close the dust emission port 1013.

[0089] In other embodiments, such as Figure 4 As shown, the emission assembly 2 includes a cover plate 201 and a drive component 202. The drive component 202 is connected to the cover plate 201 and drives the cover plate 201 to move to open and close the dust emission port 1013. In this way, by driving the cover plate 201 to move through the drive component 202, the dust emission port 1013 can be opened and closed automatically, saving manpower and improving the automation level of dust emission.

[0090] To facilitate the installation of the cover plate 201, the emission assembly 2 further includes a bracket 203 disposed at the dust emission port 1013, to which the cover plate 201 is connected. For example, the cover plate 201 may be rotatably connected to the bracket 203, or the cover plate 201 may be translatably connected to the bracket 203.

[0091] For example, the drive component 202 is connected to the cover plate 201 via a first transmission member 204 and a second transmission member 207. Both the first and second ends of the cover plate 201 are hinged to a bracket 203, and the first end of the bracket 203 is hinged to the first transmission member 204. The output shaft of the drive component 202 and the second transmission member 207 are fixedly connected. The second transmission member 207 is perpendicular to the output shaft of the drive component 202, and one end of the second transmission member 207 away from the drive component 202 is fixedly connected to the first transmission member 204. Thus, the drive component 202 drives the second transmission member 207 to rotate forward, causing the first transmission member 204 to move forward, causing the cover plate 201 to rotate forward and open the dust emission port 1013; the drive component 202 also drives the second transmission member 207 to rotate in the opposite direction, causing the first transmission member 204 to move in the opposite direction, causing the cover plate 201 to rotate in the opposite direction and close the dust emission port 1013.

[0092] To facilitate the installation of the cover plate 201, the cover plate 201 is hinged to the first transmission member 204 via the first hinge shaft 205, and the cover plate 201 is hinged to the bracket 203 via the second hinge shaft 206.

[0093] In practice, the aforementioned drive component 202 can also drive the cover plate 201 to open and close the dust emission port 1013 through other structures, and is not limited to the aforementioned structures.

[0094] In the emission assembly 2, there can be one or more cover plates 201. To reduce the space required for the movement of the cover plates 201, at least two cover plates 201 can be selected and arranged side by side, with the drive component 202 driving all the cover plates 201 to move synchronously. In this case, the drive component 202 is connected to the cover plates 201 through a first transmission member 204 and a second transmission member 207, with each cover plate 201 connected to the first transmission member 204.

[0095] In electrical equipment, the dust emission port 1013 can be opened periodically; or, the dust emission port 1013 can be opened by detecting the dust concentration in the first cavity 101 and adjusting the dust emission port 1013 according to the dust concentration.

[0096] like Figure 1 As shown, in some embodiments, a second dust detector 4 is provided inside the first cavity 101, which is used to detect the dust concentration inside the first cavity 101. When the detection value of the second dust detector 4 is within a set range, the emission assembly 2 opens the dust emission port 1013; when the detection value of the second dust detector 4 is outside the set range, the emission assembly 2 closes the dust emission port 1013. For example, when the detection value of the second dust detector 4 is greater than or equal to a set value, the emission assembly 2 opens the dust emission port 1013; when the detection value of the second dust detector 4 is less than the set value, the emission assembly 2 closes the dust emission port 1013.

[0097] In the above embodiment, the dust concentration inside the electrical equipment is detected by the second dust detector 4. The dust concentration inside the electrical equipment can be monitored, and the dust emission port 1013 can be opened and closed according to the dust concentration inside the electrical equipment, thereby reducing the probability of dust causing device failure and reducing the probability of electrical equipment failure due to dust.

[0098] As mentioned above, the emission assembly 2 includes a drive component 202, which can be optionally connected to the second dust detector 4. Thus, when the detection value of the second dust detector 4 is within a set range, the drive component 202 drives the emission assembly 2 to open the dust emission port 1013; when the detection value of the second dust detector 4 is outside the set range, the drive component 202 drives the emission assembly 2 to close the dust emission port 1013, further improving the automation level of dust emission.

[0099] The drive unit 202 and the second dust detector 4 can be directly or indirectly connected. For example, the drive unit 202 and the second dust detector 4 are indirectly connected through a controller. Specifically, the controller obtains the detection value of the second dust detector 4 and then controls the operation of the drive unit 202 based on the detection value.

[0100] The second dust detector 4 may include one dust sensor or two or more dust sensors. When the second dust detector 4 includes two or more dust sensors, the detected value of the second dust detector 4 may be the maximum value among all the detected values ​​of the dust sensors, or the maximum difference between them. The difference is the difference between the maximum and minimum detected values ​​among all the dust sensors.

[0101] As mentioned above, a first device 3 is disposed within the first cavity 101, and a dust emission port 1013 is located upstream of the first device 3. Based on this, the second dust detector 4 includes a first dust sensor 401 for detecting the dust concentration within the first cavity 101. The first dust sensor 401 is located upstream of the first device 3 and is connected to the driving component 202. Thus, the detection value of the first dust sensor 401 is the detection value of the second dust detector 4.

[0102] In practice, the second dust detector 4 can be selected to include a first dust sensor 401 and a second dust sensor 402, both used to detect the dust concentration within the first cavity 101. The first dust sensor 401 is located upstream of the first device 3, and the second dust sensor 402 is located downstream of the first device 3. Both the first dust sensor 401 and the second dust sensor 402 are connected to the driving component 202. Thus, the detection value of the second dust detector 4 is the difference between the detection value of the first dust sensor 401 and the detection value of the second dust sensor 402.

[0103] The type of the first dust sensor 401 and the second dust sensor 402 can be selected according to the actual situation. For example, both the first dust sensor 401 and the second dust sensor 402 can be laser dust sensors. This application embodiment does not limit this.

[0104] In the electrical equipment, a first fan 5 is installed inside the first cavity 101 to allow airflow through it. Along the airflow path from the air inlet 1011 to the air outlet 1012, the first fan 5 is located upstream of the dust emission outlet 1013. This ensures that the airflow can flow to both the air outlet 1012 and the dust emission outlet 1013. Furthermore, to facilitate air intake by the first fan 5, the air inlet 1011 is closer to the first fan 5 than the air outlet 1012.

[0105] With the dust emission outlet 1013 closed, the first fan 5 operates at a first speed; with the dust emission outlet 1013 open, the first fan 5 operates at a second speed. The first and second speeds are either equal or the second speed is greater than the first speed. To improve dust emission efficiency, the second speed is greater than the first speed.

[0106] In the electrical equipment, the air outlet 1012 is provided with an air outlet plate 7, which has air outlet holes 71. There can be multiple air outlet holes 71, for example, the air outlet holes 71 are distributed along an array. For example, the air outlet plate 7 is a perforated plate.

[0107] Dust tends to accumulate on the air outlet plate 7. To reduce the amount of dust deposited on the air outlet plate 7, the air outlet plate 7 is tilted relative to the horizontal direction. In this way, the dust deposited on the air outlet plate 7 will slide along the air outlet plate 7 under the action of gravity and be discharged from the air outlet 71 into the first cavity 101, reducing the chance of dust clogging the air outlet 1012.

[0108] In electrical equipment, such as Figure 2 As shown, the air inlet 1011 is equipped with a filter element 18, which is used to filter out some of the foreign objects such as sand and flying insects in the external environment. For example, the filter element 18 is used to filter larger sand particles and larger flying insects in the external environment. The filter element 18 includes a filter screen or filter cotton, etc., which is not limited in this embodiment.

[0109] The aforementioned air inlet 1011 is also equipped with waterproof louvers 6 to prevent water from the external environment from entering the first cavity 101.

[0110] The filter element 18 is closer to the interior of the first cavity 101 than the waterproof louver 6, or the waterproof louver 6 is closer to the interior of the first cavity 101 than the filter element 18.

[0111] In practice, it is also possible to choose to install waterproof louvers 6 at the air inlet 1011 without installing filter components 18, or to install filter components 18 at the air inlet 1011 without installing waterproof louvers 6.

[0112] It should be noted that the structures at the air outlet 1012 and the air inlet 1011 can be designed according to actual needs, and the two do not affect each other. For example, the air outlet 1012 is provided with an air outlet plate 7, which has an air outlet hole 71. The air outlet plate 7 is inclined relative to the horizontal direction, and the air inlet 1011 is provided with at least one of a filter component 18 and a waterproof louver 6.

[0113] In electrical equipment, the specific locations of the air inlet 1011 and air outlet 1012 are selected based on the actual situation. For example, such as... Figure 1 As shown, the air inlet 1011 is located at the top of the first side of the housing 1, and the air outlet 1012 is located at the bottom of the housing 1 and is close to the second side of the housing 1. The first side and the second side of the housing 1 are opposite to each other.

[0114] In electrical equipment, there may be one or two first cavities 101, and this application embodiment does not limit this.

[0115] Some components in electrical equipment require high protection. Therefore, the second cavity 102 is relatively isolated from the external environment of the housing. It is understood that the second cavity 102 is also relatively isolated from the first cavity 101.

[0116] like Figure 1 As shown, the second cavity 102 can exchange heat with the first cavity 101 through the heat exchanger 8. There can be one or more second cavities 102. In this way, airflow passes through the heat exchanger 8 and the devices within the second cavity 102, circulating within the second cavity 102, carrying the heat from the devices within the second cavity 102 to the heat exchanger 8 for heat exchange and cooling. The second cavity 102 can house devices with high protection requirements.

[0117] For example, the electrical equipment is an inverter, and a second device 14 is provided in the second cavity. The second device 14 can be a circuit breaker.

[0118] The heat exchanger 8 can be located within the first cavity 101. In this case, the heat exchanger 8 has a first heat exchange channel through which airflow in the second cavity flows. In this case, to facilitate the circulation of airflow within the second cavity 102, a partition 15 is provided within the second cavity 102, and the partition 15 separates the inlet and outlet of the first heat exchange channel.

[0119] As mentioned above, the heat exchanger 8 can be located within the first cavity 101. When the first device 3 is installed within the first cavity 101, to improve heat dissipation for the second cavity 102, the heat exchanger 8 can be positioned upstream of the first device 3. Since the first fan 5 is installed within the first cavity 101, the first fan 5 is located between the air inlet 1011 and the heat exchanger 8 along the airflow path from the air inlet 1011 to the air outlet 1012. When the air inlet 1011 is located at the top of the first side of the housing 1, both the first fan 5 and the heat exchanger 8 are located at the top of the housing 1.

[0120] Of course, the heat exchanger 8 can also be located inside the second cavity 102. In this case, the heat exchanger 8 has a second heat exchange channel through which the airflow in the first cavity flows. In this case, a baffle 15 can also be provided inside the second cavity 102 to allow the airflow to circulate within the second cavity 102.

[0121] Continue to refer to Figure 1 A second fan 10 is installed inside the second cavity 102 to facilitate airflow circulation within the second cavity 102. The location of the second fan 10 is selected according to the actual situation. For example, the second fan 10 is located between the heat exchanger 8 and the second device 14, and the airflow flowing out of the heat exchanger 8 and into the second cavity 102 first flows through the second fan 10 and then through the second device 14, or the airflow flowing out of the heat exchanger 8 and into the second cavity 102 first flows through the second device 14 and then through the second fan 10.

[0122] The second cavity 102 is not directly connected to the external environment of the housing 1. Theoretically, a completely sealed electrical device should not allow sand or dust to enter the second cavity 102. However, due to factors such as cabinet manufacturing tolerances, abnormal operating conditions, and aging of seals, sand and dust from the first cavity 101 and the external environment can seep into the second cavity 102. Therefore, to reduce the impact of sand and dust on the components inside the second cavity 102, a sand and dust filter assembly 9 is installed inside the second cavity 102.

[0123] To facilitate the installation of the dust filter assembly 9, the dust filter assembly 9 is installed on the second fan 10, and the dust filter assembly 9 is located on at least one side of the inlet side c and the outlet side d of the second fan 10. In this way, the airflow in the second air duct of the second cavity 102 can pass through the dust filter assembly 9, thereby improving the filtration effect of the dust filter assembly 9.

[0124] For example, the airflow flowing out of the heat exchanger 8 and into the second cavity 102 first flows through the second fan 10 and then through the second device 14, with the dust filter assembly 9 located on the outlet side d of the second fan 10.

[0125] In order to reduce the impact of the dust filter assembly 9 on the air intake of the second fan 10, the dust filter assembly 9 can be located on the outlet side d of the second fan 10.

[0126] like Figure 1 As shown, under the action of the second fan 10 and the baffle 15, the airflow passes through the heat exchanger 8, the second device 14, and the dust filter assembly 9, and circulates inside the second cavity 102, carrying the heat of the second device 14 and the other electrical components inside the second cavity 102 to the heat exchanger 8 for heat exchange and cooling.

[0127] like Figure 5 and Figure 6 As shown, to facilitate the installation of the dust filter assembly 9, the second fan 10 is equipped with a guide rail 11. The dust filter assembly 9 is mounted on the guide rail 11, and the guide rail 11 supports the dust filter assembly 9. In this way, the dust filter assembly 9 can be directly placed in the guide rail 11, simplifying its installation. To improve the stability of the dust filter assembly 9, it can be fixed to the guide rail 11.

[0128] For example, the second fan 10 includes a fan body 1002 and a fan mounting plate 1001. The fan body is mounted on the fan mounting plate 1001, and the guide rail 11 is also mounted on the fan mounting plate 1001.

[0129] In the above structure, the dust filter component 9 and the guide rail 11 can slide together, and the dust filter component 9 can be installed and removed by pulling it out.

[0130] In the above structure, the axis of the second fan 10 can be vertical or other directions. When the axis of the second fan 10 is vertical, the guide rail 11 can be located at the bottom of the second fan 10, and correspondingly, the dust filter assembly 9 is located at the bottom of the second fan 10. Alternatively, both the guide rail 11 and the dust filter assembly 9 can be located at the top of the second fan 10.

[0131] like Figure 8 and Figure 9 As shown, to facilitate the installation of the dust filter assembly 9, the second fan 10 is equipped with a mounting frame 12, to which the dust filter assembly 9 is connected. It should be noted that the mounting frame 12 is a ring structure, and can be a square ring, a circular ring, or other ring-shaped structure.

[0132] The dust filter assembly 9 can be mounted on the mounting frame 12 via the first connector 16 and the second connector 17. Exemplarily, the first connector 16 and the second connector 17 are located on opposite sides of the mounting frame 12. One of the first connector 16 and the second connector 17 can be a locating pin, and the other can be a spring plunger. Of course, both the first connector 16 and the second connector 17 can be spring plungers, or other connecting components, such as threaded connectors, can be used. This embodiment does not limit the specific choice of these components.

[0133] In the above structure, the axis of the second fan 10 can be vertical or other directions. When the axis of the second fan 10 is vertical, the mounting frame 12 and the dust filter assembly 9 are both located at the top or bottom of the second fan 10.

[0134] In practice, the second fan 10 can also be equipped with the sand and dust filter component 9 by setting other structures, and this application embodiment does not limit this.

[0135] The specific structure of the dust filter component 9 can vary. In some embodiments, such as... Figure 7 As shown, the dust filter assembly 9 includes a first clamping plate 901, a second clamping plate 902, and filter cotton 903. The filter cotton 903 is located between the first clamping plate 901 and the second clamping plate 902, and the first clamping plate 901 and the second clamping plate 902 are connected and clamp the filter cotton 903. In this case, the setting direction of the dust filter assembly 9 can be designed according to the airflow direction, and this embodiment does not limit this.

[0136] It should be noted that both the first clamping plate 901 and the second clamping plate 902 have ventilation holes to ensure that airflow passes through the filter cotton 903.

[0137] In the above structure, the dust filter assembly 9 can be installed on the second fan 10 via the guide rail 11, mounting frame 12, or other structures. The dust filter assembly 9 can be located at the top or bottom of the second fan 10.

[0138] In other embodiments, such as Figure 8 and Figure 10 As shown, the dust filtration assembly 9 includes a support frame 904 and a dust adsorption bag 905 disposed on the support frame 904. In this case, in order to facilitate the adsorption of dust by the dust adsorption bag 905, the inlet of the dust adsorption bag 905 is arranged vertically upward.

[0139] In the above structure, the dust filter assembly 9 can be installed on the second fan 10 via the guide rail 11, mounting frame 12, or other structures. The dust filter assembly 9 is located at the bottom of the second fan 10.

[0140] In the embodiments of this application, such as Figure 1As shown, a first dust detector 13 is also installed inside the second cavity 102. The first dust detector 13 is used to detect the dust concentration inside the second cavity 102. In this way, the dust concentration inside the second cavity 102 can be monitored, allowing maintenance personnel to pay attention to the dust deposition inside the second cavity 102 in a timely manner and clean the dust inside the second cavity 102, thereby improving the operational reliability of the electrical equipment.

[0141] It should be noted that when a dust filter assembly 9 is installed in the second cavity 102, the first dust detector 13 monitors the dust concentration in the second cavity 102, enabling maintenance personnel to promptly monitor the dust deposition on the dust filter assembly 9 and clean the dust on it. Therefore, both the dust filter assembly 9 and the first dust detector 13 can be installed in the second cavity 102 simultaneously. Alternatively, the second cavity 102 can have a dust filter assembly 9 installed without the first dust detector 13, or vice versa.

[0142] Furthermore, the electrical equipment also includes an alarm 19, which is connected to the first dust detector 13. When the detection value of the first dust detector 13 exceeds the set value, the alarm 19 sounds an alarm to remind maintenance personnel to pay attention to the dust deposition inside the second cavity 102 and to remind them to clean the inside of the second cavity 102, thus realizing a cleanliness alarm function and further improving the operational reliability of the electrical equipment.

[0143] The alarm 19 can be installed inside the second cavity 102 to facilitate connection between the alarm 19 and the first dust detector 13. Of course, the alarm 19 can also be installed in other locations inside or outside the housing 1, and this embodiment does not limit this.

[0144] The first dust detector 13 may include one or more dust sensors. The detection value of the first dust detector 13 can be found in the description of the detection value of the second dust detector 4, and will not be repeated here. The location of the first dust detector 13 within the second cavity 102 is selected according to the actual situation. For example, the first dust detector 13 may be located around the second device 14 or at another location.

[0145] For example, the first dust detector 13 includes a third dust sensor 1301 and a fourth dust sensor 1302, wherein, along the airflow path within the second cavity 102, the third dust sensor 1301 is located on one side of the second device 14, and the fourth dust sensor 1302 is located on the other side of the second device 14. The detection value of the first dust detector 13 is the larger of the detection values ​​of the third dust sensor 1301 and the fourth dust sensor 1302.

[0146] The types of the third dust sensor 1301 and the fourth dust sensor 1302 are selected according to the actual situation. For example, both the third dust sensor 1301 and the fourth dust sensor 1302 are laser dust sensors. This application embodiment does not limit this.

[0147] In this embodiment, besides the case where the housing 1 has a first cavity 101 and a second cavity 102, the housing 1 may also have a first cavity 101 but not a second cavity 102, or the housing 1 may also have a second cavity 102 but not a first cavity 101. The first dust detector 13 and the dust filter assembly 9 disposed within the second cavity 102 are not affected by the first cavity 101.

[0148] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrical device, characterized in that, include: A housing (1) having at least one of a first cavity (101) and a second cavity (102); The first cavity (101) has an air inlet (1011), an air outlet (1012), and a dust emission outlet (1013) for communicating with the external environment; the dust emission outlet (1013) is located between the air inlet (1011) and the air outlet (1012) on the airflow path from the air inlet (1011) to the air outlet (1012); the dust emission outlet (1013) is provided with an emission component (2), which can close and open the dust emission outlet (1013); The external environment of the second cavity (102) and the shell (1) is relatively isolated. At least one of a sand and dust filter assembly (9) and a first sand and dust detector (13) is provided in the second cavity (102). The first sand and dust detector (13) is used to detect the sand and dust concentration in the second cavity (102).

2. The electrical equipment according to claim 1, characterized in that, In the case where the housing (1) has a first cavity (101): The first cavity (101) is provided with a first device (3), and the cross-sectional area of ​​the first air duct (1014) in the first cavity (101) at the first device (3) is smaller than the cross-sectional area of ​​the first air duct (1014) upstream of the first device (3); on the airflow path from the air inlet (1011) to the air outlet (1012), at least a portion of the dust emission outlet (1013) is located upstream of the first device (3).

3. The electrical equipment according to claim 2, characterized in that, The dust emission outlet (1013) has a first edge (a) near the air inlet (1011) and a second edge (b) near the air outlet (1012). Along the airflow path from the air inlet (1011) to the air outlet (1012), the second edge (b) and the windward face of the first device (3) are aligned.

4. The electrical equipment according to claim 1, characterized in that, In the case where the housing (1) has a first cavity (101): The emission assembly (2) includes a cover plate (201) and a drive component (202), the drive component (202) being connected to the cover plate (201) and driving the cover plate (201) to move, thereby opening and closing the dust emission port (1013).

5. The electrical equipment according to claim 4, characterized in that, The emission assembly (2) further includes a bracket (203) disposed at the dust emission port (1013), and the cover plate (201) is connected to the bracket (203).

6. The electrical equipment according to claim 4, characterized in that, The cover plate (201) is at least two and arranged side by side, and the driving component (202) drives all the cover plates (201) to move synchronously.

7. The electrical device of claim 4, wherein, A second dust detector (4) is provided inside the first cavity (101). The second dust detector (4) is used to detect the dust concentration inside the first cavity (101). The driving component (202) is connected to the second dust detector (4).

8. The electrical equipment according to claim 7, characterized in that, The first cavity (101) is provided with a first device (3), and the cross-sectional area of ​​the first air duct (1014) in the first cavity (101) at the first device (3) is smaller than the cross-sectional area of ​​the first air duct (1014) upstream of the first device (3); on the airflow path from the air inlet (1011) to the air outlet (1012), the dust emission outlet (1013) is located upstream of the first device; The second dust detector (4) includes a first dust sensor (401) for detecting the dust concentration in the first cavity (101), the first dust sensor (401) being located upstream of the first device (3), and the first dust sensor (401) being connected to the driving component (202); or, the second dust detector (4) includes a first dust sensor (401) and a second dust sensor (402) both for detecting the dust concentration in the first cavity (101), the first dust sensor (401) being located upstream of the first device (3), the second dust sensor (402) being located downstream of the first device (3), and both the first dust sensor (401) and the second dust sensor (402) being connected to the driving component (202).

9. The electrical equipment according to claim 1, characterized in that, In the case where the housing (1) has a first cavity (101): A first fan (5) is provided inside the first cavity (101). The first fan (5) is located upstream of the dust emission port (1013) on the airflow path from the air inlet (1011) to the air outlet (1012).

10. The electrical equipment according to claim 9, characterized in that, When the dust emission outlet (1013) is closed, the first fan (5) operates at a first speed; when the dust emission outlet (1013) is open, the first fan (5) operates at a second speed, and the second speed is greater than the first speed.

11. The electrical equipment according to claim 1, characterized in that, In the case where the housing (1) has a first cavity (101): The air outlet (1012) is provided with an air outlet plate (7), the air outlet plate (7) has an air outlet hole (71), and the air outlet plate (7) is inclined relative to the horizontal direction; And / or, the air inlet (1011) is provided with at least one of a filter element (18) and a waterproof louver (6).

12. The electrical equipment according to any one of claims 1-11, characterized in that, In the case where the housing (1) has a first cavity (101) and a second cavity (102): The second cavity (102) and the first cavity (101) are relatively isolated, and the second cavity (102) exchanges heat with the first cavity (101) through a heat exchanger (8).

13. The electrical equipment according to any one of claims 1-11, characterized in that, When the housing (1) has a second cavity (102) and a sand and dust filter assembly (9) is provided in the second cavity (102): The second cavity (102) is provided with a second fan (10), the dust filter assembly (9) is disposed on the second fan (10), and the dust filter assembly (9) is located on at least one side of the inlet side (c) and outlet side (d) of the second fan (10).

14. The electrical equipment according to claim 13, characterized in that, The second fan (10) is provided with a guide rail (11), the dust filter assembly (9) is disposed on the guide rail (11), and the guide rail (11) supports the dust filter assembly (9); Alternatively, the second fan (10) is provided with a mounting frame (12), and the dust filter assembly (9) is connected to the mounting frame (12).

15. The electrical device of any one of claims 1-11, wherein, When the housing (1) has a second cavity (102) and a sand and dust filter assembly (9) is provided in the second cavity (102): The dust filtration assembly (9) includes: a first clamping plate (901), a second clamping plate (902), and a filter cotton (903). The filter cotton (903) is located between the first clamping plate (901) and the second clamping plate (902), and the first clamping plate (901) and the second clamping plate (902) are connected and clamp the filter cotton (903). Alternatively, the dust filtration assembly (9) may include a support frame (904) and a dust adsorption bag (905) disposed on the support frame (904).

16. The electrical device of any one of claims 1-11, wherein, In the case where the housing (1) has a second cavity (102) and a first dust detector (13) is installed inside the second cavity (102): The electrical equipment also includes an alarm (19) connected to the first dust detector (13).

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