Frequency converter
By installing a sealing member at the opening of the inverter's heat dissipation slot, dust is prevented from entering other areas and heat dissipation is achieved through the vent, the problem of short circuit caused by dust entering is solved, and effective heat dissipation and protection are achieved.
Patent Information
- Application Number
- CN202420333353.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-22
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-02-22
AI Technical Summary
In existing frequency converters, dust in the outside air can easily enter other areas inside the shell except for the heat dissipation tank, resulting in short circuits in electronic components.
A frequency converter is designed, which is equipped with a sealing member at the opening of the heat dissipation groove. The sealing member can prevent dust from entering other areas in the installation space except the heat dissipation groove, and at the same time, the heat dissipation of the capacitor is realized through the ventilation port.
It effectively prevents dust outside the shell from entering other areas of the inverter, avoids the problem of short circuit of electronic components, and realizes effective heat dissipation of the capacitor.
Smart Images
Figure CN222655015U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of frequency conversion equipment, and more specifically, relates to a frequency converter. Background Art
[0002] The inverter is an electrical device that changes the power supply conditions of the motor by converting fixed-frequency alternating current into alternating current with adjustable frequency and voltage, thereby achieving precise control of the motor.
[0003] The existing inverter includes a shell, a heat sink and electronic components, wherein the shell is hollow inside and the heat sink is fixedly installed inside the shell; in order to reduce the volume of the inverter, a heat sink is provided on the heat sink, the electronic components are mounted on the heat sink, and the components to be cooled on the electronic components extend into the heat sink; at the same time, in order to ensure the heat dissipation effect, a vent corresponding to the heat sink is provided on the shell to allow the air outside the shell to exchange heat with the air in the heat sink.
[0004] However, when the air outside the housing flows into the heat sink, dust in the air outside the housing will also flow into the heat sink along with the air, and enter other areas inside the housing except the heat sink through the heat sink, causing short circuits in electronic components in other areas. Utility Model Content
[0005] The purpose of the embodiments of the present application is to provide a frequency converter, aiming to solve the technical problem in the prior art that dust in the outside air easily enters other areas inside the housing except the heat dissipation slot.
[0006] To achieve the above-mentioned purpose, according to one aspect of the present application, there is provided an inverter, comprising: a shell, an installation space is provided in the shell; a radiator, the radiator is installed in the installation space, the radiator is provided with a heat dissipation groove, the heat dissipation groove has an opening, and the shell is provided with a vent for heat exchange between the air in the heat dissipation groove and the air outside the shell; a capacitor, the capacitor is installed in the heat dissipation groove through the opening of the heat dissipation groove; and a sealing member is installed on the radiator and used for sealing the opening of the heat dissipation groove.
[0007] Optionally, the blocking member can be detachably mounted on the radiator.
[0008] Optionally, the radiator has a first surface and a second surface adjacent to the first surface, the opening of the heat dissipation groove is arranged on the first surface, and the second surface is provided with an installation opening for inserting the sealing member into the opening of the heat dissipation groove; a limiting strip is installed on the inner wall of the opening of the heat dissipation groove, a limiting groove is provided on the side of the sealing member, and the sealing member and the radiator are connected by inserting the limiting strip into the limiting groove; the sealing member covers the opening of the heat dissipation groove.
[0009] Optionally, the inverter also includes a drive circuit board and a capacitor circuit board, both of which are arranged in the installation space. The drive circuit board is used to convert the signal provided by the external circuit into a target signal for reception by an external device, and the target signal is a voltage signal or a frequency signal; the drive circuit board supplies power to the capacitor circuit board, and the capacitor circuit board supplies power to the capacitor.
[0010] Optionally, the driving circuit board is arranged on one side of the radiator and is mounted on the radiator through fastener pins; a guide column is installed on the radiator, and a guide hole is provided on the driving circuit board. The driving circuit board extends into the guide hole through the guide column and is aligned with the radiator.
[0011] Optionally, the inverter also includes a terminal circuit board, which is arranged in the installation space and fixedly mounted on the surface of the driving circuit board close to the radiator and powered by the driving circuit board. The terminal circuit board is used to feed back the target signal to an external device; a reserved space for installing a filter board is provided on the terminal circuit board.
[0012] Optionally, the inverter also includes a control circuit board, which is arranged in the installation space and is used to convert the signal provided by the external device into a control signal received by the driving circuit board. The control circuit board is powered by the driving circuit board, and the control circuit board is electrically connected to the driving circuit board to feed back the control signal to the driving circuit board.
[0013] Optionally, one of the driving circuit board and the control circuit board is equipped with a connecting male socket, and the other is equipped with a connecting female socket that can be plugged into the connecting male socket; a guide rod is installed on the driving circuit board, and a guide groove is provided on the control circuit board. The control circuit board is inserted into the guide groove through the guide rod so that the connecting male socket and the connecting female socket can be plugged into each other.
[0014] Optionally, the frequency converter further includes a signal processor, which is fixedly mounted on the driving circuit board, powered by the driving circuit board, and electrically connected to the control circuit board.
[0015] Optionally, the driving circuit board has a first electrical area and a second electrical area, the second electrical area is located on one side of the first electrical area and is arranged independently from the first electrical area, and the voltage that the first electrical area can handle is lower than the voltage that the second electrical area can handle.
[0016] The beneficial effect of the inverter provided by the present application is that, compared with the prior art, when the capacitor in the present application is subjected to heat dissipation treatment, the heat generated by the capacitor is dispersed in the air in the heat dissipation slot, and the air outside the shell enters the heat dissipation slot through the vents, and exchanges heat with the air in the heat dissipation slot to achieve heat dissipation treatment of the capacitor; in this process, dust in the air outside the shell will enter the heat dissipation slot along with the air through the vents, and be blocked in the heat dissipation slot by the blocking piece, thereby ensuring that the dust in the air outside the shell cannot enter other areas in the installation space except the heat dissipation slot through the heat dissipation slot; the provided blocking piece plays a role in blocking the dust in the heat dissipation slot from entering other areas in the installation space except the heat dissipation slot. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0018] Figure 1 A schematic diagram of the structure of the frequency converter provided in the embodiment of the present application;
[0019] Figure 2 A schematic diagram of the structure of the heat sink, capacitor, plugging member, relay and heat dissipation fan provided in an embodiment of the present application after being assembled in a first viewing angle;
[0020] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;
[0021] Figure 4 A schematic diagram of the structure of the heat sink, capacitor, plugging member, relay and heat dissipation fan provided in an embodiment of the present application after being assembled in a second viewing angle;
[0022] Figure 5 A schematic diagram of the structure of the assembled radiator, capacitor, plugging member, relay, capacitor circuit board and cooling fan provided in an embodiment of the present application;
[0023] Figure 6 A schematic diagram of the structure of the heat sink, capacitor, plugging member, relay, capacitor circuit board, terminal circuit board, control circuit board and cooling fan provided in an embodiment of the present application after being assembled in a first viewing angle;
[0024] Figure 7 A schematic diagram of the structure of the driver circuit board, the terminal circuit board and the power switch after being assembled according to the embodiment of the present application;
[0025] Figure 8 A schematic diagram of the structure of the heat sink, capacitor, plugging member, relay, capacitor circuit board, terminal circuit board, control circuit board and cooling fan provided in an embodiment of the present application after being assembled in a second viewing angle;
[0026] Fig. 9 for Figure 8 The enlarged schematic diagram of point B in the middle;
[0027] Fig.10 A schematic front view of a driver circuit board provided in an embodiment of the present application.
[0028] The reference numerals in the above drawings are as follows:
[0029] 100, housing; 110, vent; 200, radiator; 210, heat sink; 211, limit strip; 212, opening; 220, guide column; 230, second connection hole; 240, first grounding contact; 250, support column; 260, second grounding contact; 270, grounding terminal; 300, capacitor; 400, blocking piece; 410, limit slot; 500, drive circuit board; 510, first connection hole; 520, connecting male socket; 530, guide rod; 540, first electrical area; 550, second electrical area; 600, capacitor circuit board; 700, relay; 800, terminal circuit board; 810, reserved space; 900, control circuit board; 910, connecting female socket; 1000, signal processor; 1100, power switch; 1200, cooling fan. DETAILED DESCRIPTION
[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. In the absence of conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0034] As described in the background technology, at present, the frequency converter is a kind of electric power equipment, which changes the power supply conditions of the motor by converting the fixed frequency AC into the adjustable frequency and voltage AC, thereby realizing the precise control of the motor. The existing frequency converter includes a housing, a heat sink and an electronic component, wherein the housing is hollow inside and the heat sink is fixedly installed inside the housing; in order to reduce the volume of the frequency converter, a heat sink is provided on the heat sink, the electronic component is installed on the heat sink, and the heat dissipation element on the electronic component extends into the heat sink; at the same time, in order to ensure the heat dissipation effect, a vent corresponding to the heat sink is provided on the housing, so that the air outside the housing can exchange heat with the air inside the heat sink. However, in the process of the air outside the housing flowing into the heat sink, the dust in the air outside the housing will also enter the heat sink along with the air, and enter other areas inside the housing except the heat sink through the heat sink, causing the electronic components in other areas to short-circuit.
[0035] Reference Figures 1 to 5 In order to solve the above problems, according to one aspect of the present application, an embodiment of the present application provides an inverter, which includes a housing 100, a heat sink 200, a capacitor 300 and a sealing member 400, wherein an installation space is provided in the housing 100; the heat sink 200 is installed in the installation space, and a heat sink 210 is provided on the heat sink 200, and the heat sink 210 has an opening 212, and a vent 110 is provided on the housing 100 for heat exchange between the air in the heat sink 210 and the air outside the housing 100; the capacitor 300 is installed in the heat sink 210 through the opening 212 of the heat sink 210; the sealing member 400 is installed on the heat sink 200, and is used to seal the opening 212 of the heat sink 210.
[0036] In the embodiment of the present application, the interior of the shell 100 is hollow to form an installation space. The shell 100 includes a plurality of connecting plates, and two adjacent connecting plates are connected to each other; the radiator 200 is fixedly installed in the installation space, and the radiator 200 includes a plurality of heat sinks arranged in sequence along the length direction of the shell 100. The radiator 200 is not only made of aluminum alloy material, but also integrally formed by a die-casting process, which reduces its own volume and reduces the manufacturing cost. In addition, the radiator 200 also has functions such as a base, heat dissipation and grounding; two vents 110 are provided on the shell 100, and the two vents 110 are respectively arranged on two opposite surfaces of the shell 100. The heat dissipation groove 210 extends from one surface of the radiator 200 toward the inside of the radiator 200 and is arranged between the two vents 110 to ensure the heat dissipation effect of the capacitor 300 in the heat dissipation groove 210, and the air outside the shell 100 The electric current enters the heat sink 210 through a vent 110 and is discharged to the outside of the housing 100 through another vent 110; the capacitor 300 is a conventional capacitor device, which plays the role of smoothing voltage and storing and releasing charge. A plurality of capacitors 300 are provided, and the plurality of capacitors 300 are arranged in sequence in the heat sink 210, and the end of the capacitor 300 away from the bottom of the heat sink 210 is located outside the heat sink 210; the blocking member 400 is a blocking plate, and the blocking member 400 can be fixedly installed on the radiator 200 by bolts, and blocks the opening 212 of the heat sink 210. A through hole is provided on the blocking member 400, and the end of the capacitor 300 away from the bottom of the heat sink 210 extends to the outside of the heat sink 210 through the through hole. Of course, in other embodiments, the blocking member 400 can also be installed on the radiator 200 by welding or clamping, and blocks the opening 212 of the heat sink 210. In addition, a plurality of grounding terminals 270 for grounding external devices (such as motors) are fixedly mounted on the heat sink 200 . Figure 2 The arrows in the figure are path marks for the air outside the housing 100 to enter the heat dissipation slot 210 through the heat dissipation fan 1200 and to be discharged from the heat dissipation slot 210 to the outside.
[0037] When the capacitor 300 in the present application is subjected to heat dissipation treatment, the heat generated by the capacitor 300 is dispersed in the air in the heat dissipation slot 210, and the air outside the housing 100 enters the heat dissipation slot 210 through the vent 110, and exchanges heat with the air in the heat dissipation slot 210 to achieve heat dissipation treatment for the capacitor 300; in this process, dust in the air outside the housing 100 will enter the heat dissipation slot 210 along with the air through the vent 110, and be blocked in the heat dissipation slot 210 by the sealing member 400, thereby ensuring that the dust in the air outside the housing 100 cannot enter other areas in the installation space except the heat dissipation slot 210 through the heat dissipation slot 210; the provided sealing member 400 plays a role in preventing the dust in the heat dissipation slot 210 from entering other areas in the installation space except the heat dissipation slot 210.
[0038] Reference Figure 2 and Figure 3 As an optional method in the embodiment of the present application, the blocking member 400 is detachably mounted on the radiator 200. In this optional method, the blocking member 400 can be detachably mounted on the radiator 200 by screws, and blocks the opening 212 of the heat dissipation slot 210; of course, in other embodiments, a sliding bar is provided on the blocking member 400, and a sliding groove is provided on the groove wall of the opening 212 of the heat dissipation slot 210, and the blocking member 400 and the radiator 200 can be connected by inserting the sliding bar into the sliding groove, and the opening 212 of the heat dissipation slot 210 is blocked.
[0039] Reference Figure 2 and Figure 3 As an optional method in the embodiment of the present application, the radiator 200 has a first surface and a second surface adjacent to the first surface, the opening 212 of the heat dissipation groove 210 is arranged on the first surface, and the second surface is provided with an installation opening for inserting the blocking member 400 into the opening 212 of the heat dissipation groove 210; a limiting strip 211 is installed on the inner wall of the opening 212 of the heat dissipation groove 210, and a limiting groove 410 is provided on the side of the blocking member 400, and the blocking member 400 and the radiator 200 are connected by inserting the limiting strip 211 into the limiting groove 410; the blocking member 400 covers the opening 212 of the heat dissipation groove 210.
[0040] In this optional embodiment, the opening 212 of the heat dissipation slot 210 extends into the installation opening; the opening 212 of the heat dissipation slot 210 has three inner wall surfaces, and the limiting strips 211 are fixedly installed on the three inner wall surfaces. Correspondingly, the three side surfaces of the sealing member 400 corresponding to the three inner wall surfaces on the opening 212 of the heat dissipation slot 210 are provided with limiting slots 410, and the limiting strips 211 are inserted into the corresponding limiting slots 410 and fit with the slot walls of the corresponding limiting slots 410. In addition, the sealing member 400 completely covers the opening 212 of the heat dissipation slot 210, so that the sealing member 400 blocks the opening 212 of the heat dissipation slot 210.
[0041] Reference Figure 5 and Figure 6 As an optional method in the embodiment of the present application, the inverter also includes a driving circuit board 500 and a capacitor circuit board 600. The driving circuit board 500 and the capacitor circuit board 600 are both arranged in the installation space. The driving circuit board 500 is used to convert the signal provided by the external circuit into a target signal for reception by the external device, and the target signal is a voltage signal or a frequency signal; the driving circuit board 500 supplies power to the capacitor circuit board 600, and the capacitor circuit board 600 supplies power to the capacitor 300.
[0042] In this optional manner, the driver circuit board 500 and the capacitor circuit board 600 are both PCB (full name: Printed Circuit The capacitor circuit board 600 is a circuit board of the embodiment of the present invention. ... In addition, the inverter also includes a relay 700, which is arranged between the capacitor circuit board 600 and the radiator 200, and is located on one side of the capacitor 300, and is fixedly mounted on the radiator 200. The relay 700 is welded to the capacitor circuit board 600 so that the capacitor circuit board 600 supplies power to the relay 700, and the relay 700 is electrically connected to the drive circuit board 500.
[0043] Reference Figure 4 , Figures 6 to 8 As an optional method in the embodiment of the present application, the driving circuit board 500 is arranged on one side of the radiator 200 and is installed on the radiator 200 through fasteners; a guide column 220 is installed on the radiator 200, and a guide hole is provided on the driving circuit board 500. The driving circuit board 500 extends into the guide hole through the guide column 220 to be aligned with the radiator 200.
[0044] In this optional mode, the heat sink 200 also has a third surface adjacent to the first surface and opposite to the second surface, and the driving circuit board 500 is arranged corresponding to the third surface of the heat sink 200; a plurality of first connection holes 510 are arranged on the driving circuit board 500, and a plurality of second connection holes 230 are arranged on the heat sink 200, the number of the second connection holes 230 is the same as the number of the first connection holes 510, and they are arranged one by one, and the fastener can be a screw or a connecting pin, and the screw or the connecting pin is inserted into the second connection hole 230 through the first connection hole 510 to install the driving circuit board 500 on the heat sink 200; the driving circuit board 500 arranged in this way reduces the volume of the inverter. The guide column 220 is fixedly installed on the third surface of the heat sink 200, and the guide hole is a through hole, and the first connection hole 510 can be inserted into the guide hole through the guide column 220 and aligned with the second connection hole 230.
[0045] Reference Figure 6 and Figure 7 As an optional method in the embodiment of the present application, the inverter also includes a terminal circuit board 800, which is arranged in the installation space and fixedly installed on the surface of the driving circuit board 500 close to the radiator 200, and is powered by the driving circuit board 500. The terminal circuit board 800 is used to feed back the target signal to the external device.
[0046] In this optional mode, the terminal circuit board 800 is a PCB (full name in English: Printed Circuit Board, Chinese name: circuit board). The terminal circuit board 800 is electrically connected to the driving circuit board 500 to receive the target signal fed back by the driving circuit board 500, and is also electrically connected to the external device to feed back the target signal to the external device. The specific structure of the terminal circuit board 800 belongs to the common knowledge of those skilled in the art and will not be described in detail here. The terminal circuit board 800 serves as a connection interface. The terminal circuit board 800 is fixedly mounted on the driving circuit board 500 by welding process. The terminal circuit board 800 designed in this way reduces the volume of the inverter. The terminal circuit board 800 is located on one side of the radiator 200. In order to enable the terminal circuit board 800 to be grounded, a first grounding contact 240 for grounding the terminal circuit board 800 is installed on the radiator 200, and the first grounding contact 240 is connected to the terminal circuit board 800 by screws. In order for the terminal circuit board 800 to feed back the target signal to the external device, a through hole is provided on the housing 100 for the output port of the terminal circuit board 800 to extend out; in addition, in order for the inverter to meet different usage requirements and improve the cable anti-interference performance of the terminal motor, a reserved space 810 for the installation of a filter board is provided on the terminal circuit board 800. The filter board can be fixedly installed on the reserved space 810 and electrically connected to the terminal circuit board 800.
[0047] Reference Figure 6 and Figure 8 As an optional method in the embodiment of the present application, the inverter also includes a control circuit board 900, which is arranged in the installation space and is used to convert the signal provided by the external device into a control signal received by the driving circuit board 500. The control circuit board 900 is powered by the driving circuit board 500, and the control circuit board 900 is electrically connected to the driving circuit board 500 to feed back the control signal to the driving circuit board 500.
[0048] In this optional manner, the control circuit board 900 is a PCB (full name in English: Printed Circuit Board, Chinese name: circuit board). The control circuit board 900 can not only be powered by the driving circuit board 500, but also can feedback control signals to the driving circuit board 500. The specific structure of the control circuit board 900 belongs to the common knowledge of those skilled in the art and will not be described in detail here. The control circuit board 900 is arranged on the side of the capacitor circuit board 600 away from the radiator 200. The radiator 200 is fixedly mounted with a support column 250 extending toward the control circuit board 900, and the control circuit board 900 is fixedly mounted on the support column 250; in order to ground the control circuit board 900, a second grounding contact 260 for grounding the control circuit board 900 is installed on the radiator 200, and the control circuit board 900 is connected to the second grounding contact 260 by screws.
[0049] Reference Figures 8 to 10 As an optional method in the embodiment of the present application, one of the driving circuit board 500 and the control circuit board 900 is installed with a connecting male socket 520, and the other is installed with a connecting female socket 910 that can be plugged into the connecting male socket 520; a guide rod 530 is installed on the driving circuit board 500, and a guide groove is provided on the control circuit board 900. The control circuit board 900 is inserted into the guide groove through the guide rod 530 so that the connecting male socket 520 and the connecting female socket 910 are plugged into each other.
[0050] In this optional embodiment, the male connector 520 is fixedly mounted on the surface of the driver circuit board 500 away from the radiator 200 and is electrically connected to the driver circuit board 500, the female connector 910 is mounted on the control circuit board 900 and is electrically connected to the control circuit board 900; the guide rod 530 is fixedly mounted on the surface on which the male connector 520 is mounted, and the guide rod 530 plays a guiding role, so that the male connector 520 can be smoothly inserted into the female connector 910. Of course, in other embodiments, the female connector 910 can also be fixedly mounted on the surface of the driver circuit board 500 away from the radiator 200 and is electrically connected to the driver circuit board 500, the male connector 520 is mounted on the control circuit board 900 and is electrically connected to the control circuit board 900, the guide groove is provided on the surface on which the female connector 910 is mounted, and the guide rod 530 is fixedly mounted on the control circuit board 900.
[0051] Reference Figure 6 and Fig.10 As an optional method in the embodiment of the present application, the frequency converter also includes a signal processor 1000, which is fixedly mounted on the driving circuit board 500, powered by the driving circuit board 500, and electrically connected to the control circuit board 900. In this optional method, the signal processor 1000 is a DSP (English full name: Digital Signal Processing, Chinese full name: Digital Signal Processing) chip, the signal processor 1000 is fixedly mounted on the driving circuit board 500, the driving circuit board 500 supplies power to the signal processor 1000, and the signal processor 1000 processes the electrical signal fed back by the control circuit board 900 efficiently and quickly. In addition, referring to Figure 4 and Figure 7 The inverter further includes a power switch 1100 , which is powered by the driving circuit board 500 , fixedly mounted on the third surface of the heat sink 200 , and electrically connected to the driving circuit board 500 .
[0052] Reference Fig.10 In order to reduce the probability of signal interference, ensure smooth electrical connection, and reduce the size of the inverter, the driver circuit board 500 has a first electrical area 540 and a second electrical area 550. The second electrical area 550 is located on one side of the first electrical area 540 and is arranged independently of the first electrical area 540. The voltage that the first electrical area 540 can handle is lower than the voltage that the second electrical area 550 can handle. The first electrical area 540 can be understood as a weak current area, which can handle voltages of 3V, 5V, 10V and 24V. The first electrical area 540 is located at the edge of the driver circuit board 500; the second electrical area 550 can be understood as a strong current area, which can handle voltages from 220V to 600V. Fig.10The dotted line in is a boundary line between the first electrical region 540 and the second electrical region 550 .
[0053] Reference Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As an optional method in the embodiment of the present application, two vents 110 are provided, and the heat dissipation slot 210 is provided between the two vents 110; the inverter further includes a heat dissipation fan 1200, which is fixedly installed in the installation space and located between the two vents 110, and is used to exchange air outside the housing 100 with air in the heat dissipation slot 210. The heat dissipation fan 1200 accelerates the heat dissipation efficiency of the inverter.
[0054] In summary, the inverter provided by the present embodiment has at least the following beneficial technical effects: when the capacitor 300 in the present application is subjected to heat dissipation treatment, the heat generated by the capacitor 300 is dispersed in the air in the heat dissipation slot 210, and the air outside the housing 100 enters the heat dissipation slot 210 through the vent 110, and exchanges heat with the air in the heat dissipation slot 210 to achieve heat dissipation treatment for the capacitor 300; in this process, dust in the air outside the housing 100 will enter the heat dissipation slot 210 along with the air through the vent 110, and be blocked in the heat dissipation slot 210 by the sealing member 400, thereby ensuring that the dust in the air outside the housing 100 cannot enter other areas in the installation space except the heat dissipation slot 210 through the heat dissipation slot 210; the provided sealing member 400 plays a role in blocking the dust in the heat dissipation slot 210 from entering other areas in the installation space except the heat dissipation slot 210.
[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A frequency converter, characterized in that: include: A housing, wherein an installation space is provided in the housing; A radiator, the radiator being installed in the installation space, the radiator being provided with a heat dissipation slot having an opening, and the housing being provided with a vent for heat exchange between the air in the heat dissipation slot and the air outside the housing; A capacitor, the capacitor is installed in the heat dissipation slot through an opening of the heat dissipation slot; A blocking piece is installed on the radiator and is used to block the opening of the heat dissipation slot.
2. The frequency converter according to claim 1, characterized in that: The blocking member is detachably mounted on the radiator.
3. The frequency converter according to claim 2, characterized in that: The radiator comprises a first surface and a second surface adjacent to the first surface, the opening of the heat dissipation slot is arranged on the first surface, and the second surface is provided with a mounting opening for the sealing member to be inserted into the opening of the heat dissipation slot; a limiting strip is installed on the inner wall of the opening of the heat dissipation slot, a limiting groove is provided on the side surface of the sealing member, the sealing member and the radiator are connected by inserting the limiting strip into the limiting groove; the sealing member covers the opening of the heat dissipation slot.
4. The frequency converter according to claim 1, characterized in that: The inverter also includes a driving circuit board and a capacitor circuit board, both of which are arranged in the installation space. The driving circuit board is used to convert a signal provided by an external circuit into a target signal for reception by an external device, wherein the target signal is a voltage signal or a frequency signal; the driving circuit board supplies power to the capacitor circuit board, and the capacitor circuit board supplies power to the capacitor.
5. The frequency converter according to claim 4, characterized in that: The driving circuit board is arranged on one side of the radiator and is mounted on the radiator through fasteners; A guide column is installed on the radiator, and a guide hole is provided on the driving circuit board. The driving circuit board extends into the guide hole through the guide column and is aligned with the radiator.
6. The frequency converter according to claim 5, characterized in that: The inverter also includes a terminal circuit board, which is arranged in the installation space and fixedly mounted on the surface of the driving circuit board close to the radiator and powered by the driving circuit board. The terminal circuit board is used to feed back the target signal to the external device; a reserved space for installing a filter board is provided on the terminal circuit board.
7. The frequency converter according to claim 4, characterized in that: The inverter also includes a control circuit board, which is arranged in the installation space and is used to convert the signal provided by the external device into a control signal received by the driving circuit board. The control circuit board is powered by the driving circuit board and is electrically connected to the driving circuit board to feed back the control signal to the driving circuit board.
8. The frequency converter according to claim 7, characterized in that: One of the driving circuit board and the control circuit board is equipped with a connecting male socket, and the other is equipped with a connecting female socket that can be plugged into the connecting male socket; a guide rod is installed on the driving circuit board, and a guide groove is provided on the control circuit board. The control circuit board is inserted into the guide groove through the guide rod so that the connecting male socket and the connecting female socket are plugged into each other.
9. The frequency converter according to claim 7, characterized in that: The frequency converter further includes a signal processor, which is fixedly mounted on the driving circuit board, powered by the driving circuit board, and electrically connected to the control circuit board.
10. The frequency converter according to any one of claims 4 to 9, characterized in that: The driving circuit board has a first electrical area and a second electrical area, the second electrical area is located on one side of the first electrical area and is arranged independently of the first electrical area, and the voltage that the first electrical area can handle is lower than the voltage that the second electrical area can handle.