Control device for a vacuum pump, vacuum pump

Abstract

The application relates to the technical field of vacuum pumps, and discloses a control device of a vacuum pump and the vacuum pump. The control device of the vacuum pump comprises a control part, a second shell and a first circuit board. The control part comprises a first shell and a controller arranged in the first shell, the inner cavity of the second shell is used for mounting a motor of the vacuum pump and can be communicated with the inner cavity of a pump body of the vacuum pump. The first surface of the first shell and the second surface of the second shell are oppositely arranged along a first direction. The first circuit board is arranged between the first surface and the second surface and comprises a third surface and a fourth surface which are opposite along the first direction, the third surface is attached to the first surface, and the fourth surface is attached to the second surface. The first interface of the first circuit board is electrically connected with the controller, and the second interface is used for being electrically connected with the motor. In this way, the compactness of the control device can be improved while the control performance of the control device on the pump body is ensured.

Description

Technical Field

[0001] This application relates to the field of vacuum pump technology, and in particular to a vacuum pump control device and a vacuum pump. Background Technology

[0002] A vacuum pump is a device used to remove gas from a sealed container to obtain or maintain a vacuum. It mainly consists of a pump body and a control unit. The pump body is used to achieve gas intake, compression, and exhaust, while the control unit adjusts the pump body's operation in real time based on parameters such as vacuum level and temperature to ensure stable and efficient pumping performance.

[0003] However, because the control device needs to integrate multiple control functions, there are many parts and a large heat dissipation requirement, resulting in a large overall size of the vacuum pump and a large space occupation, which is not conducive to improving the integration of the vacuum pump. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a control device for a vacuum pump and a vacuum pump. The following describes this application from multiple aspects, and the implementation methods and beneficial effects of the following aspects can be referred to each other.

[0005] In a first aspect, this application provides a control device for a vacuum pump, comprising a control unit, a second housing, and a first circuit board. The control unit includes the first housing and a controller disposed within the first housing. The inner cavity of the second housing is used to mount a motor of the vacuum pump, and the inner cavity of the second housing is communicatively connected to the inner cavity of the pump body of the vacuum pump. A first surface of the first housing and a second surface of the second housing are disposed opposite each other along a first direction. The first circuit board is disposed between the first and second surfaces, and includes a third surface and a fourth surface opposite each other along the first direction. The third surface is attached to the first surface, and the fourth surface is attached to the second surface. The first circuit board includes a first interface on the third surface and a second interface on the fourth surface. The first interface is electrically connected to the controller, and the second interface is used for electrical connection to the motor.

[0006] Thus, the first circuit board can be electrically connected to both the controller and the motor, enabling the controller to drive the motor via the first circuit board. Furthermore, since the first surface of the first housing and the second surface of the second housing are positioned opposite each other along a first direction, and the first circuit board is located between the first and second surfaces, with the circuit board body extending along a plane perpendicular to the first direction, the gap between the control unit and the second housing can be further reduced. It is even possible to allow the first surface of the first housing and the second surface of the second housing to directly adhere to each other, forming the control unit, the second housing, and the first circuit board into a single unit. This improves the overall compactness of the control device and reduces its overall size and space occupation.

[0007] In some implementations of the first aspect described above, the controller includes a third interface; a first through hole is provided on the first surface, the first through hole communicates with the inner cavity of the first housing, the first interface extends into the inner cavity of the first housing through the first through hole, and is electrically connected to the third interface.

[0008] In this way, the controller can control the motor to run sequentially through the first through hole, the first interface, the second interface and the first through hole. Furthermore, the first through hole, the first interface, the second interface and the first through hole can all be sealed within one or more sealed spaces formed by the control unit, the second housing and the first circuit board, ensuring the sealing performance of the control device under normal operation and improved compactness.

[0009] In some implementations of the first aspect described above, the controller includes a U-shaped second circuit board, which includes a first part, a second part, and a third part connected in sequence. The first part and the third part are arranged opposite to each other along a first direction, with the first part being closer to the first surface than the third part; wherein the third interface is located on the first part.

[0010] Thus, compared to a planar circuit board, the U-shaped second circuit board has a folded structure, and this structure is compressed and disposed within the first housing of the control unit, which can improve the compactness of the control unit, thereby reducing the overall volume of the control unit and further improving the overall compactness of the control device.

[0011] In some implementations of the first aspect described above, the controller further includes a fourth interface located on the second part and extending to the outside of the first housing, the fourth interface being used to receive external control signals.

[0012] In this way, the controller can control the motor through the third interface based on the external control signals received from the fourth interface, thereby realizing diverse communication and interaction functions between the control unit and the outside world. Furthermore, the first through hole and the third interface are respectively located on the first surface and the fifth surface, which can further improve the utilization rate of the control unit's housing and enhance the compactness of the control unit.

[0013] In some implementations of the first aspect described above, the controller further includes an isolator and at least one chip, with the chip, isolator, and first part stacked sequentially along a first direction; wherein the isolator has at least one second through-hole, and the pins of the chip are electrically connected to the first part via the second through-hole. The chip can be a motor chip used to control the operation of the motor.

[0014] Thus, by setting up an isolator and a chip, the chip can be directly placed on the first part and electrically isolated from the first part through the isolator. This allows for a reduction in the distance between the chip and the first part while ensuring chip performance, thereby reducing the overall size of the control unit.

[0015] In some implementations of the first aspect described above, the control device further includes a first seal disposed between the first surface and the second surface and surrounding the first circuit board, the first seal being used to seal the connection between the first surface and the second surface.

[0016] In this way, the first circuit board can be sealed between the first and second surfaces, thereby improving the sealing performance of the control device.

[0017] In some implementations of the first aspect described above, the second surface includes a first region and a second region connected together, the second region surrounding the first region along a first direction, the first region being recessed relative to the second region in a direction away from the first surface, and the fourth surface being attached to the first region.

[0018] Thus, along the first direction, at least a portion of the first circuit board can be disposed in the recessed area of ​​the second surface, thereby further reducing the distance between the first and second surfaces, further reducing the size of the control device along the first direction, and further improving the compactness of the control device.

[0019] In some implementations of the first aspect described above, along the first direction, the third surface is further away from the first surface relative to the second region, or the third surface is flush with the second region.

[0020] Thus, along the first direction, the first circuit board can be completely embedded inside the second housing, thereby further reducing the gap between the first surface and the second surface to further improve the compactness of the control device.

[0021] In some implementations of the first aspect described above, a third through hole is provided on the second surface, the third through hole communicates with the inner cavity of the second housing, and the second interface extends into the inner cavity of the second housing through the third through hole; wherein, the control device further includes a second seal, the second seal is disposed between the fourth surface and the second region, and surrounds the second interface, the second seal is used to seal the connection between the fourth surface and the second region.

[0022] In this way, the first circuit board and the second housing can be sealed together, thereby improving the sealing performance of the control device. Since the inner cavity of the second housing is used to form a vacuum chamber together with the pump body, the joint sealing of the first circuit board and the second housing can ensure that the vacuum chamber maintains the required vacuum level, thereby ensuring the working performance of the vacuum pump.

[0023] Secondly, this application provides a vacuum pump, which includes a pump body, a motor, and a control device as described in any of the first aspects above. The pump body is sealed to a second housing, and the inner cavity of the pump body communicates with the inner cavity of the second housing; the motor is located in the inner cavity of the second housing and is electrically connected to a second interface of a first circuit board.

[0024] The beneficial effects of the second aspect described above can be referred to the relevant descriptions in the various embodiments of the first aspect described above, and will not be repeated here. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0026] Figure 1 A structural diagram (perspective view) of the control device 10 in some embodiments of this application is shown;

[0027] Figure 2 An exploded view of a control device 10 in some embodiments of this application is shown.

[0028] Figure 3 An exploded view (structure diagram) of the second housing 200 and the first circuit board 300 in some embodiments of this application is shown.

[0029] Figure 4 A structural diagram (perspective view) of the first circuit board 300 in some embodiments of this application is shown;

[0030] Figure 5 A structural diagram (perspective view) of the second housing 200 in some embodiments of this application is shown;

[0031] Figure 6 An exploded view (structural diagram) of the control unit 100 in some embodiments of this application is shown;

[0032] Figure 7A A first structural diagram (perspective view) of the first half-shell 111 in some embodiments of this application is shown;

[0033] Figure 7B A second structural diagram (perspective view) of the first half-shell 111 in some embodiments of this application is shown;

[0034] Figure 8A A first structural diagram (perspective view) of the second half-shell 112 in some embodiments of this application is shown;

[0035] Figure 8B A second structural diagram (perspective view) of the second half-shell 112 in some embodiments of this application is shown;

[0036] Figure 9A A first structural diagram (perspective view) of the controller 120 in some embodiments of this application is shown;

[0037] Figure 9B A second structural diagram (perspective view) of the controller 120 in some embodiments of this application is shown;

[0038] Figure 10 A structural diagram (perspective view) of the spacer 122 in some embodiments of this application is shown.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Control device; 100. Control unit; 110. First housing; 111. First half-shell; 111a. First surface; 1111. First through hole; 1112. Blind hole; 1113. First mounting hole; 1113'. Central mounting hole; 1114. First groove; 1115a. First spacer mounting hole; 1115b. Second spacer mounting hole; 1115c. Third spacer mounting hole; 1116. Clamping mounting hole; 1117. Clearance hole; 1119. First sealing groove; 111b. Fifth surface 1118a, First communication hole; 1118b, Second communication hole; 1118c, Third communication hole; 112, Second half-shell; 1121, First fixing post; 1122, Second fixing post; 1123, Third fixing post; 1124a / 1124b / 1124c / 1124d / 1124e, Fifth mounting hole; 1125, Second sealing groove; 120, Controller; 121, Second circuit board; 1211, First part; 1212, Second part; 1213, Third part; 1214, Third connector 1215 / 1215a / 1215b / 1215c, Fourth Interface; 122, Isolator; 1221, Isolator Body; 1222, Boss; 1223, Support Post; 1224, Second Through Hole; 1225, First Isolator Fixing Hole; 1226, Second Isolator Fixing Hole; 1227, Third Isolator Fixing Hole; 123, Chip; 124, Clamping Member; 1241, Clamping Body; 1242, First Clamping Arm; 1243, Second Clamping Arm; 1244, Clamping Through Hole; 200, Second Shell Body; 200a, inner cavity; 200b, second surface; 201b, first region; 202b, second region; 201, third through hole; pump body through hole 202; 210, second groove; 220, third groove; 230, fourth groove; 240, second mounting hole; 250, third mounting hole; 300, first circuit board; 300a, third surface; 300b, fourth surface; 310, circuit board body; 320, first interface; 330, second interface; 340, second seal; 350, fourth mounting hole. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0042] As mentioned earlier, a vacuum pump mainly consists of a pump body and a control device. The control device typically includes a control unit and a motor, which are usually electrically connected via wires to enable the control unit to drive the motor. The vacuum pump also includes a pump body and a base sealed to the pump body. The motor is housed within the base, thereby driving the rotor or vane mechanism within the pump body to complete a continuous cycle of intake-compression-exhaust, thus establishing and maintaining the required vacuum environment within the pump body.

[0043] However, because the control unit and the motor inside the base are separate structures, and both the control unit and the motor are relatively large, the overall structure of the vacuum pump is quite dispersed and the overall size is large. With the accelerated evolution of high-end equipment towards miniaturization and high-density integration, vacuum pumps urgently need to further reduce their size and increase their integration level while ensuring performance.

[0044] To address the aforementioned technical issues, this application provides a control device for a vacuum pump. This device seals the housing and base of the vacuum pump's control unit, and a circuit board is positioned between the control unit and the base. This circuit board electrically connects the controller within the control unit to the motor within the base. This approach ensures the control device's performance over the pump while simultaneously improving its compactness, thus increasing its integration.

[0045] In addition, by setting the controller inside the control unit housing as a U-shaped folding structure, this application can further reduce the overall volume of the control unit and further improve the compactness of the control device.

[0046] The following is combined with Figures 1 to 10 An exemplary structure of the control device in some embodiments of this application is described.

[0047] Figure 1 A structural diagram (perspective view) of the control device 10 is shown; Figure 2 An exploded view of one structure of the control device 10 is shown; Figure 3 An exploded view (structural diagram) of the second housing 200 and the first circuit board 300 is shown. Figure 4 A structural diagram (perspective) of the first circuit board 300 is shown; Figure 5 A structural diagram (perspective view) of the second housing 200 is shown.

[0048] To facilitate the subsequent description, before introducing the specific structure of the control device 10, let's first combine... Figure 1 Define the x, y, and z directions corresponding to the control device 10. For example... Figure 1As shown, the x-direction can be the length direction of the control device 10. For example, in the default usage direction, the direction from the left edge to the right edge of the control device 10 is the positive x-direction. The y-direction can be the width direction of the control device 10. For example, in the default usage direction, the direction from the front edge to the rear edge of the control device 10 is the positive y-direction. The z-direction can be the thickness direction of the control device 10. For example, in the default usage direction, the direction from the bottom surface to the top surface of the control device 10 is the positive z-direction. In some embodiments of this application, the x-direction, y-direction, and z-direction intersect each other. In some implementations, the x-direction, y-direction, and z-direction can be perpendicular to each other.

[0049] It should be noted that the directional terms such as "upper," "lower," "left," "right," "top," "bottom," and "above" used in this document refer to exemplary orientations shown in the accompanying drawings corresponding to the embodiments, and do not indicate or imply that the components referred to must have a specific orientation. These terms can vary accordingly based on actual use and should not be construed as limiting this application. Furthermore, it is understood that when the viewing angle of the accompanying drawings changes (e.g., the drawings are rotated at any angle for reference), the directional terms also change accordingly.

[0050] It is understood that the perpendicularity in this application is not absolute perpendicularity. Approximate perpendicularity due to processing and assembly errors (e.g., an angle of 89° between two structural features) is also within the scope of mutual perpendicularity in this application. Similarly, the parallelism in this application is not absolute parallelism. Approximate parallelism due to processing and assembly errors (e.g., an angle of 1° between two structural features) is also within the scope of mutual parallelism in this application. The limitations of mutual parallelism and mutual perpendicularity will not be repeated below.

[0051] refer to Figure 1 and Figure 2 In some embodiments of this application, the control device 10 includes a control unit 100, a second housing 200, and a first circuit board 300. The control unit 100 includes a first housing 110 and a controller 120 disposed within the first housing 110. The inner cavity 200a of the second housing 200 is used to mount a motor (not shown) of the vacuum pump, and the inner cavity 200a of the second housing 200 is communicatively connected to the inner cavity of the pump body (not shown) of the vacuum pump. The first housing 110 can be referred to as the outer shell of the control unit 100, and is used to house the controller 120, which controls the motor within the second housing 200 via the first circuit board 300. The second housing 200 can be referred to as the base of the vacuum pump, and its top surface has a pump body through hole 202, which connects the pump body and the inner cavity 200a of the second housing 200, allowing the motor within the second housing 200 to drive the pump body.

[0052] Continue to refer to Figure 1 and Figure 2 In some embodiments of this application, the first housing 110 has a first surface 111a and the second housing 200 has a second surface 200b, wherein the first surface 111a of the first housing 110 and the second surface 200b of the second housing 200 are disposed opposite to each other along the y-direction (as an example of the first direction).

[0053] refer to Figure 1 and Figure 2 and combined Figures 3 to 5 A first circuit board 300 is disposed between a first surface 111a and a second surface 200b. The first circuit board 300 includes a third surface 300a and a fourth surface 300b that are opposite to each other along the y-direction. The third surface 300a is attached to the first surface 111a, and the fourth surface 300b is attached to the second surface 200b. Specifically, the first circuit board 300 may include a circuit board body 310, a first interface 320, and a second interface 330. The circuit board body 310 has a third surface 300a and a fourth surface 300b on its two sides along the y-direction, respectively. The first interface 320 is disposed on the third surface 300a, and the second interface 330 is disposed on the fourth surface 300b. Furthermore, the first interface 320 is electrically connected to the controller 120, and the second interface 330 is used for electrical connection to the motor.

[0054] Thus, the first circuit board 300 can be electrically connected to the controller 120 and the motor respectively, enabling the controller 120 to drive the motor through the first circuit board 300. Furthermore, since the first surface 111a of the first housing 110 and the second surface 200b of the second housing 200 are arranged opposite each other along the y-direction, and the first circuit board 300 is disposed between the first surface 111a and the second surface 200b, and the circuit board body 310 can extend along the xz plane, the gap between the control unit 100 and the second housing 200 can be further reduced. It is even possible to allow the first surface 111a of the first housing 110 and the second surface 200b of the second housing 200 to directly adhere, forming the control unit 100, the second housing 200, and the first circuit board 300 into a single unit. This improves the overall compactness of the control device 10 and reduces its overall size and space occupation.

[0055] Continue to refer to Figures 1 to 5In some embodiments of this application, the control device 10 may further include a first seal (not shown in the figures), which is disposed between the first surface 111a and the second surface 200b and surrounds the first circuit board 300. The first seal is used to seal the connection between the first surface 111a and the second surface 200b. In this way, the first circuit board 300 can be sealed between the first surface 111a and the second surface 200b, thereby improving the sealing performance of the control device 10.

[0056] For example, the first seal may be formed of a sealing material such as a sealant. This application does not impose any limitations on the material of the first seal.

[0057] Continue to refer to Figure 2 In some embodiments of this application, a first groove 1114 surrounding the first circuit board 300 is formed on the first surface 111a, and the first sealant is filled in the first groove 1114. Therefore, the first groove 1114 can also be called a sealing groove. In this way, the distance between the first surface 111a and the second surface 200b can be further reduced, so as to further improve the sealing performance and compactness of the control device 10.

[0058] Continue to refer to Figure 2 , Figure 3 and Figure 5 In some embodiments of this application, a first mounting hole 1113 is formed on the first surface 111a, and a second mounting hole 240 is formed on the second surface 200b. Furthermore, the control device 10 also includes a first fixing member (not shown in the figure), which passes through the first mounting hole 1113 and the second mounting hole 240 along the y-direction to fix the first housing 110 and the second housing 200 together. The first mounting hole 1113 may also be filled with sealant. For example, the first mounting hole 1113 may penetrate the first housing 110 along the y-direction. Thus, the control unit 100 and the second housing 200 can be fixedly connected through the first mounting hole 1113 and the second mounting hole 240. Furthermore, filling the first mounting hole 1113 with sealant allows the controller 120 to be better sealed within the first housing 110, improving the sealing performance of the controller 120 and thus further enhancing the overall sealing performance of the control device 10.

[0059] In some embodiments of this application, the first fastener can be a screw or other fastening component. This application does not impose any limitations on the specific structure of the first fastener. Furthermore, the first mounting hole 1113 can be a through hole, and the second mounting hole 240 can be a threaded hole. The first mounting hole 1113 can be located at the apex corner of the first housing 110, and the number can be four. Correspondingly, the fourth mounting hole 350 can also be four. It should be noted that this application does not impose any limitations on the number and location of the first mounting hole 1113 and the second mounting hole 240; the first mounting hole 1113 and the second mounting hole 240 can also have other numbers and / or be located in other positions.

[0060] Continue to refer to Figures 3 to 5 In some embodiments of this application, the second surface 200b includes a first region 201b and a second region 202b connected together. The second region 202b surrounds the first region 201b along a first direction y. The first region 201b is recessed relative to the second region 202b in a direction away from the first surface 111a. The fourth surface 300b is attached to the first region 201b. Thus, along the y-direction, at least a portion of the first circuit board 300 can be disposed within the recessed region of the second surface 200b, thereby further reducing the distance between the first surface 111a and the second surface 200b, further reducing the size of the control device 10 along the y-direction, and further improving the compactness of the control device 10.

[0061] Continue to refer to Figures 3 to 5 In some embodiments of this application, along the first direction y, the third surface 300a is further away from the first surface 111a relative to the second region 202b, or the third surface 300a is flush with the second region 202b. Thus, along the y-direction, the first circuit board 300 can be completely embedded inside the second housing 200, thereby further reducing the distance between the first surface 111a and the second surface 200b, further improving the compactness of the control device 10.

[0062] Continue to refer to Figures 3 to 5 In some embodiments of this application, a third through hole 201 may be provided on the second surface 200b. The third through hole 201 communicates with the inner cavity 200a of the second housing 200, and the second interface 330 extends into the inner cavity 200a of the second housing 200 via the third through hole 201. For example, the third through hole 201 may be provided on the first region 201b.

[0063] Continue to refer to Figures 3 to 5In some embodiments of this application, a second groove 210 may also be provided on the second surface 200b, and the bottom surface of the second groove 210 is used to form the first region 201b. The second groove 210 may also include a third groove 220 and a fourth groove 230. The third groove 220 is used to avoid protruding devices on the fourth surface 300b, and the fourth groove 230 is disposed around the third through hole 201.

[0064] Furthermore, the control device 10 may also include a second seal 340, which is disposed between the fourth surface 300b and the second region 202b and surrounds the second interface 330. The second seal 340 is used to seal the connection between the fourth surface 300b and the second region 202b. For example, the second seal 340 may be disposed on the fourth surface 300b and may be a sealing ring surrounding the second interface 330, which may be disposed within the fourth groove 230. In this way, the first circuit board 300 and the second housing 200 can be jointly sealed, thereby improving the sealing performance of the control device 10. Since the inner cavity 200a of the second housing 200 is used to form a vacuum chamber together with the pump body, the joint sealing of the first circuit board 300 and the second housing 200 can ensure that the vacuum chamber maintains the required vacuum level, thereby ensuring the working performance of the vacuum pump.

[0065] Continue to refer to Figures 3 to 5 In some embodiments of this application, at least one third mounting hole 250 may be provided on the second surface 200b, and at least one fourth mounting hole 350 may be provided on the circuit board body 310 extending through itself in the y-direction. The third mounting hole 250 and the fourth mounting hole 350 are arranged opposite to each other in the y-direction. The first circuit board 300 can be fixedly connected to the second housing 200 by fasteners (e.g., screws) in the third mounting hole 250 and the fourth mounting hole 350.

[0066] In some embodiments of this application, the third mounting hole 250 can be a threaded hole, and the fourth mounting hole 350 can be a through hole. The fourth mounting hole 350 can be located at the apex corner of the circuit board body 310 and the apex corner of the second seal 340, and the number can be six. Correspondingly, the third mounting hole 250 can be located at the apex corner of the second region 202b and the apex corner of the third through hole 201, and the number can be six. It should be noted that this application does not impose any limitations on the number and location of the third mounting hole 250 and the fourth mounting hole 350, and the third mounting hole 250 and the fourth mounting hole 350 can also have other numbers and / or be located in other positions.

[0067] The following is combined with Figures 6 to 10 An exemplary structure of the control unit 100 in some embodiments of this application will be described.

[0068] Figure 6An exploded view of the control unit 100 is shown. Figure 7A and Figure 7B The structural diagrams (stereoscopic views) of the first half-shell 111 from two different perspectives are shown respectively; Figure 8A and Figure 8B The structural diagrams (stereoscopic views) of the second half-shell 112 from two different perspectives are shown respectively; Figure 9A and Figure 9B The structural diagrams (stereoscopic views) of the controller 120 from two different perspectives are shown respectively; Figure 10 A structural diagram (perspective view) of the spacer 122 is shown.

[0069] refer to Figure 6 and combined Figures 7A to 8B In some embodiments of this application, the first housing 110 of the control unit 100 includes a first half-shell 111 and a second half-shell 112 connected along the y-direction. The first half-shell 111 and the second half-shell 112 together form a cuboid box, which can be a metal box. It should be noted that this application does not impose any limitations on the specific material and structure of the first housing 110, and the first housing 110 can also be made of other materials or structures.

[0070] The first surface 111a of the first half-shell 111 has a first mounting hole 1113 and a middle mounting hole 1113'. The first mounting holes 1113 are located at the four apex corners of the first surface 111a, and the middle mounting holes 1113' can be located between adjacent first mounting holes 1113.

[0071] In some embodiments of this application, the second half-shell 112 can be an L-shaped structure, and the second half-shell 112 can be provided with a first fixing post 1121, a second fixing post 1122, and a third fixing post 1123. The first fixing post 1121, the second fixing post 1122, and the third fixing post 1123 are all disposed on the inner surface of the L-shaped structure, and all extend along the y-direction and are spaced apart along the x-direction. The second half-shell 112 also has fifth mounting holes 1124a, 1124b, 1124c, 1124d, and 1124e. The fifth mounting holes 1124a, 1124b, 1124c, and 1124d can all be through holes, and the fifth mounting hole 1124e can be a threaded hole. The fifth mounting holes 1124a, 1124b, and 1124e are respectively opened and pass through the first fixing post 1121, the second fixing post 1122, and the third fixing post 1123 along the y-direction.

[0072] In some embodiments of this application, the fifth mounting holes 1124a, 1124b, 1124c, and 1124d can be respectively disposed opposite to the four first mounting holes 1113 and communicate in the same direction. The fifth mounting hole 1124e and the middle mounting hole 1113' are disposed opposite to each other and communicate in the same direction, so that the first half-shell 111 and the second half-shell 112 can be fixedly connected by fasteners (e.g., screws) and connected to the second mounting hole 240. Figure 3 ).

[0073] Continue to refer to Figure 6 and combined Figures 7A to 8B In some embodiments of this application, the inner edge of the first half-shell 111 may further include a first sealing groove 1119, and the inner edge of the second half-shell 112 may further include a second sealing groove 1125. The first sealing groove 1119 and the second sealing groove 1125 are arranged opposite to each other and may be coated with sealing strips. The first half-shell 111 and the second half-shell 112 may also be sealed and connected by the sealing strips in the first sealing groove 1119 and the second sealing groove 1125.

[0074] Continue to refer to Figure 6 and combined Figures 7A to 8B In some embodiments of this application, at least one blind hole 1112 may be provided on the first surface 111a of the first half-shell 111. The blind hole 1112 may be disposed opposite to the fourth mounting hole 350 and communicate in the same direction to avoid the fastener disposed in the fourth mounting hole 350.

[0075] Continue to refer to Figure 6 and combined Figures 9A to 9B In some embodiments of this application, the controller 120 may include a U-shaped second circuit board 121. The second circuit board 121 includes a first portion 1211, a second portion 1212, and a third portion 1213 connected in sequence. The first portion 1211 and the third portion 1213 are arranged opposite to each other along a first direction y and communicate with each other in the same direction. The first portion 1211 is closer to the first surface 111a than the third portion 1213. Control circuits may be provided on the first portion 1211, the second portion 1212, and the third portion 1213. Thus, compared with a planar circuit board, the U-shaped second circuit board 121 has a folded structure, which can improve compactness and reduce the overall volume of the control unit 100.

[0076] In some embodiments of this application, the first part 1211, the second part 1212 and the third part 1213 can be connected as a whole or connected by means of flexible wires, etc. This application does not limit this.

[0077] Continue to refer to Figure 6 and combined Figures 7A to 9BIn some embodiments of this application, a first through hole 1111 is provided on the first surface 111a, the first through hole 1111 communicates with the inner cavity of the first housing 110, and the controller 120 includes a third interface 1214.

[0078] The first interface 320 extends into the inner cavity of the first housing 110 via the first through hole 1111 and is electrically connected to the third interface 1214. The third interface 1214 is located on the first portion 1211. Thus, the controller 120 can control the motor operation sequentially via the first through hole 1111, the first interface 320, the second interface 330, and the first through hole 1111. Furthermore, the first through hole 1111, the first interface 320, and the second interface 330 (… Figure 3 Both the control unit 100 and the first through hole 1111 can be sealed within one or more sealed spaces formed by the control unit 100, the second housing 200 and the first circuit board 300, so as to ensure the sealing performance of the control device 10 under normal operation and improved compactness.

[0079] In some embodiments of this application, the third interface 1214 can be one or more, and the third interface 1214 is used to drive the motor to run.

[0080] Continue to refer to Figure 6 and combined Figures 7A to 9B In some embodiments of this application, the first half-shell 111 further includes a fifth surface 111b, which faces the positive z-direction and may have a first communication hole 1118a, a second communication hole 1118b, and a third communication hole 1118c. Correspondingly, the controller 120 also includes a fourth interface 1215, which is disposed on the second part 1212 and extends to the outside of the first shell 110. The fourth interface 1215 is used to receive external control signals.

[0081] For example, there can be three fourth interfaces 1215, namely fourth interfaces 1215a, 1215b and 1215c. The fourth interfaces 1215a, 1215b and 1215c extend to the outside of the first housing 110 via the first communication hole 1118a, the second communication hole 1118b and the third communication hole 1118c respectively.

[0082] Thus, the controller 120 can control the motor through the third interface 1214 based on the external control signal received by the fourth interface 1215. Furthermore, the first through hole 1111 and the fourth interface 1215 are respectively provided on the first surface 111a and the fifth surface 111b, which can further improve the utilization rate of the housing of the control unit 100 and improve the compactness of the control unit 100.

[0083] In some embodiments of this application, the fourth interface 1215a can be an input or output signal reading interface, the fourth interface 1215b can be an input or output signal reading interface, and the fourth interface 1215c can be a traffic light interface. It should be noted that this application does not impose any limitations on the number or specific function of the fourth interfaces 1215; the fourth interfaces 1215 can be configured with any number and function as needed.

[0084] Continue to refer to Figure 6 and combined Figures 9A to 10 In some embodiments of this application, the controller 120 may further include an isolator 122 and at least one chip 123, wherein the chip 123, the isolator 122, and the first portion 1211 are stacked sequentially along a first direction y. The chip 123 may be a motor chip, i.e., used to control the operation of a motor. Furthermore, there may be multiple chips 123, for example, seven. In other embodiments, the number of chips 123 may also vary.

[0085] Thus, by setting the isolator 122 and the chip 123, the chip 123 can be directly placed on the first part 1211 and electrically isolated from the first part 1211 by the isolator 122. This allows the chip 123 to maintain its performance while further reducing the distance between the chip 123 and the first part 1211, thereby reducing the overall size of the control unit 100.

[0086] Continue to refer to Figure 6 and combined Figures 9A to 10 In some embodiments of this application, the isolation member 122 includes an isolation body 1221, a boss 1222, and a support post 1223. The boss 1222 and the support post 1223 are located on opposite sides of the isolation body 1221 along the y-direction. The boss 1222 is located between the chip 123 and the isolation body 1221 and can be configured one-to-one with the chip 123 to provide heat dissipation for the chip 123. The support post 1223 is located between the isolation body 1221 and the first part 1211 to support the isolation body 1221 and isolate the isolation body 1221 and the chip 123 from the first part 1211. Thus, the isolation member 122 can also ensure good heat dissipation performance of the chip 123.

[0087] Continue to refer to Figure 6 and combined Figures 9A to 10 In some embodiments of this application, at least one second through hole 1224 is provided on the isolator 122, and the pins of the chip 123 are electrically connected to the first part 1211 through the second through hole 1224. In this way, the chip 123 can drive the motor to run through the second circuit board 121 to ensure the normal operation performance of the chip 123.

[0088] Continue to refer to Figure 6 and combined Figures 9A to 10 In some embodiments of this application, a first isolation member mounting hole 1115a, a second isolation member mounting hole 1115b, and a third isolation member mounting hole 1115c are provided on the first surface 111a. Correspondingly, a first isolation member fixing hole 1225, a second isolation member fixing hole 1226, and a third isolation member fixing hole 1227 are provided on the isolation body 1221. Along the y-direction, the first isolation member mounting hole 1115a, the second isolation member mounting hole 1115b, and the third isolation member mounting hole 1115c are respectively arranged opposite to the first isolation member fixing hole 1225, the second isolation member fixing hole 1226, and the third isolation member fixing hole 1227 and communicate in the same direction for fixing by screws or other fasteners. This fixes the isolation member 122 to the inner side of the first housing 110, thereby further improving the compactness of the internal components of the control unit 100.

[0089] In some embodiments of this application, the first spacer mounting hole 1115a, the second spacer mounting hole 1115b, and the third spacer mounting hole 1115c can be through holes, and the first spacer fixing hole 1225, the second spacer fixing hole 1226, and the third spacer fixing hole 1227 can be threaded holes.

[0090] Continue to refer to Figure 6 and combined Figures 9A to 10 In some embodiments of this application, the control unit 100 may also include a clamping member 124, which is connected to the first part 1211 and the third part 1213 respectively, for compressing and folding the U-shaped second circuit board 121 in the y-direction, that is, for limiting the extension direction of the first part 1211 and the third part 1213. For example, the clamping member 124 may make the extension directions of the first part 1211 and the third part 1213 parallel or approximately parallel.

[0091] In some embodiments of this application, the clamping member 124 can be an E-shaped structure. The clamping member 124 may include a clamping body 1241, a first clamping arm 1242, and a second clamping arm 1243. The first clamping arm 1242 and the second clamping arm 1243 are disposed on the clamping body 1241 and can be used to jointly clamp the third part 1213. The clamping body 1241 may also be provided with a clamping through hole 1244. Correspondingly, a clamping member mounting hole 1116 may be opened on the first surface 111a. Along the y-direction, the clamping member mounting hole 1116 may be disposed opposite to the clamping through hole 1244 and communicate in the same direction, so that it can be fixedly connected by a fastener (such as a screw) to fix the clamping member 124 to the first housing 110, thereby improving the fixing stability of the clamping member 124 and the second circuit board 121.

[0092] Continue to refer to Figure 6In some embodiments of this application, a clearance hole 1117 may also be provided on the first surface 111a. The clearance hole 1117 can be used to avoid large protruding components (such as capacitors) on the controller 120 and / or the first circuit board 300. For example, the clearance hole 1117 can be a through hole.

[0093] In summary, in the above embodiments of this application, the housing and base of the vacuum pump's control unit are sealed together, and a circuit board is placed between the control unit and the base. This circuit board electrically connects the controller within the control unit to the motor within the base. Furthermore, the second circuit board within the control unit is configured with a U-shaped folding structure, integrating control circuitry, chips, and various communication interfaces. This approach ensures the control device's performance over the pump while simultaneously improving the compactness and integration of the control device.

[0094] In some embodiments of this application, a vacuum pump is also provided, which includes a pump body, a motor, and a control device described in any of the above embodiments. The pump body is sealed to a second housing, and the inner cavity of the pump body communicates with the inner cavity of the second housing; the motor is located within the inner cavity of the second housing and is electrically connected to a second interface of the first circuit board.

[0095] Thus, the vacuum pump provided in this application can reduce its overall size and thus reduce the space occupied by the vacuum pump while ensuring its performance is intact.

[0096] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details have been omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0097] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "outer", "inner", "circumferential", "radial", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0098] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fit" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0099] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A control device for a vacuum pump, characterized in that, include: The control unit (100) includes a first housing (110) and a controller (120) disposed in the first housing (110); The second housing (200) has an inner cavity (200a) for mounting the motor of the vacuum pump, and the inner cavity (200a) of the second housing (200) is able to communicate with the inner cavity of the pump body of the vacuum pump, wherein the first surface (111a) of the first housing (110) and the second surface (200b) of the second housing (200) are arranged opposite to each other along a first direction (y); A first circuit board (300) is disposed between the first surface (111a) and the second surface (200b). The first circuit board (300) includes a third surface (300a) and a fourth surface (300b) that are opposite to each other along the first direction (y). The third surface (300a) is attached to the first surface (111a), and the fourth surface (300b) is attached to the second surface (200b). The first circuit board (300) includes a first interface (320) on the third surface (300a) and a second interface (330) on the fourth surface (300b). The first interface (320) is electrically connected to the controller (120), and the second interface (330) is used to be electrically connected to the motor.

2. The control device according to claim 1, characterized in that, The controller (120) includes a third interface (1214); A first through hole (1111) is provided on the first surface (111a), the first through hole (1111) communicates with the inner cavity of the first housing (110), the first interface (320) extends through the first through hole (1111) into the inner cavity of the first housing (110) and is electrically connected to the third interface (1214).

3. The control device according to claim 2, characterized in that, The controller (120) includes a U-shaped second circuit board (121), which includes a first part (1211), a second part (1212), and a third part (1213) connected in sequence. The first part (1211) and the third part (1213) are arranged opposite to each other along the first direction (y), and the first part (1211) is closer to the first surface (111a) than the third part (1213). The third interface (1214) is located on the first part (1211).

4. The control device according to claim 3, characterized in that, The controller (120) further includes a fourth interface (1215) which is located on the second part (1212) and extends to the outside of the first housing (110). The fourth interface (1215) is used to receive external control signals.

5. The control device according to claim 3, characterized in that, The controller (120) further includes an isolator (122) and at least one chip (123), wherein the chip (123), the isolator (122), and the first portion (1211) are stacked sequentially along the first direction (y); The isolator (122) has at least one second through hole (1224), and the pins of the chip (123) are electrically connected to the first part (1211) via the second through hole (1224).

6. The control device according to claim 1, characterized in that, The control device further includes a first seal, which is disposed between the first surface (111a) and the second surface (200b) and surrounds the first circuit board (300). The first seal is used to seal the connection between the first surface (111a) and the second surface (200b).

7. The control device according to claim 1, characterized in that, The second surface (200b) includes a first region (201b) and a second region (202b) connected together, the second region (202b) surrounding the first region (201b) along the first direction (y), the first region (201b) being recessed relative to the second region (202b) in a direction away from the first surface (111a), and the fourth surface (300b) being in contact with the first region (201b).

8. The control device according to claim 7, characterized in that, Along the first direction (y), the third surface (300a) is further away from the first surface (111a) relative to the second region (202b), or the third surface (300a) is flush with the second region (202b).

9. The control device according to claim 7, characterized in that, A third through hole (201) is provided on the second surface (200b), the third through hole (201) communicates with the inner cavity (200a) of the second housing (200), and the second interface (330) extends into the inner cavity (200a) of the second housing (200) through the third through hole (201); The control device further includes a second seal (340), which is disposed between the fourth surface (300b) and the second region (202b) and surrounds the second interface (330). The second seal (340) is used to seal the connection between the fourth surface (300b) and the second region (202b).

10. A vacuum pump, characterized in that, Includes a pump body, a motor, and a control device (10) as described in any one of claims 1 to 9; The pump body is sealed to the second housing (200), and the inner cavity of the pump body is in communication with the inner cavity (200a) of the second housing (200); The motor is located in the inner cavity (200a) of the second housing (200) and is electrically connected to the second interface (330) of the first circuit board (300).

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