Vacuum pump

Abstract

The utility model provides a vacuum pump and relates to the technical field of vacuum pumps. A bearing middle column is arranged on the inner side of the bottom of the shell; the control mechanism comprises a circuit board, is arranged in the shell and is sleeved on the bearing middle column; the power mechanism comprises a hollow cup stator coil and a rotating ring, the hollow cup stator coil is arranged at the bottom of the circuit board, the rotating ring is arranged on the hollow cup stator coil in a sleeving mode, propeller blades are arranged on the outer side wall of the rotating ring in the circumferential direction, a Ru magnet is arranged on the inner side wall of the rotating ring in the circumferential direction, and the Ru magnet is matched with the electrified hollow cup stator coil in an electromagnetic induction mode. According to the utility model, the control mechanism and the power mechanism are intensively arranged in the shell, and the circuit board, the hollow cup stator coil and the rotating ring are assembled in the bearing middle column, so that the whole structure is simplified, and the whole machine is small in size and low in height; the hollow cup stator coil achieves low power consumption, the outer side wall of the rotating ring is provided with the propeller blades in the circumferential direction, rotating noise can be effectively reduced, and the overall performance and applicability of the vacuum pump are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pumps and provides a vacuum pump. Background Art

[0002] A vacuum pump is a compact device with an inlet and an outlet nozzle. It uses a mechanical device to make the diaphragm inside the pump move in a reciprocating piston-like manner, and can continuously form negative pressure at the inlet and positive pressure at the exhaust nozzle. The working medium is mainly gas.

[0003] Existing vacuum pumps all use a brushless DC motor or a brushed DC motor as their power source, and are composed of a combination of structural components with a vacuum pumping function superimposed on the outside. As a result, the existing vacuum pumps are larger in size, have more power loss, and thus consume more power, and the heat caused by useless work will also increase. Utility Model Content

[0004] The embodiment of the present utility model provides a vacuum pump to solve the defects of large volume and high power loss in the related art, realize structural integration, and reduce volume and power consumption.

[0005] According to one embodiment of the present invention, the present invention includes:

[0006] A housing, wherein a bearing center column is provided on the inner side of the bottom of the housing;

[0007] A control mechanism includes a circuit board, which is disposed in the housing and sleeved on the bearing center column;

[0008] The power mechanism includes a hollow cup stator coil and a rotating ring. The hollow cup stator coil is arranged on the side of the circuit board facing the bottom of the shell. The rotating ring is sleeved on the hollow cup stator coil. The outer wall of the rotating ring is circumferentially provided with propeller blades, and the inner wall of the rotating ring is circumferentially provided with Ru magnets. The Ru magnets are electromagnetically adapted to the hollow cup stator coil after power is applied.

[0009] According to one embodiment of the present invention, an air inlet hole and an air outlet hole are provided at the bottom of the shell, and an air inlet pipe corresponding to the air inlet hole and an air outlet pipe corresponding to the air outlet hole are provided on the outer side of the bottom of the shell.

[0010] According to an embodiment of the present invention, a rubber sleeve is provided in the air inlet hole, a cross reinforcing rib is provided inside the rubber sleeve, and a film is provided on the side of the rubber sleeve facing away from the air inlet pipe.

[0011] According to one embodiment of the present utility model, an electronic component is provided on the side of the circuit board facing away from the bottom of the shell, and a three-phase pin is provided on the side of the circuit board facing the bottom of the shell. The hollow cup stator coil is welded to the side of the circuit board facing the bottom of the shell, and is electrically connected to the electronic component through the three-phase pin. The electronic component is used to adjust the magnetic field direction of the hollow cup stator coil.

[0012] According to an embodiment of the present invention, the inner side wall of the shell is provided with a flange, and the circuit board is mounted on the flange.

[0013] According to an embodiment of the present invention, a connector is provided on a side of the circuit board facing away from the bottom of the housing, and the connector is used to be electrically connected to an external controller to receive a command signal.

[0014] According to one embodiment of the present invention, a plurality of grooves are circumferentially provided on the inner side wall of the rotating ring, the Ru magnets are provided in the grooves, and the polarities of the ends of two adjacent Ru magnets that are close to each other are opposite.

[0015] According to one embodiment of the present invention, the Ru magnet is fixed in the groove by photosensitive adhesive.

[0016] According to one embodiment of the present invention, a cover body is further included. The cover body is arranged on the top of the shell body, and the cover body is provided with a through hole adapted to pass through the bearing center column.

[0017] According to an embodiment of the present invention, the cover is connected to the shell through a snap assembly.

[0018] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0019] The utility model provides a vacuum pump, which arranges a bearing center column at the bottom of the shell, and then centrally installs the control mechanism and the power mechanism in the shell, completes the assembly of the circuit board, hollow cup stator coil and rotating ring on the bearing center column, simplifies the overall structure, and the whole machine is small in size and low in height; on the other hand, the hollow cup stator coil achieves low power consumption, and the outer side wall of the rotating ring is circumferentially provided with propeller blades, which can effectively reduce rotation noise and improve the overall performance and applicability of the vacuum pump.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic structural diagram of the vacuum pump provided by the utility model.

[0023] Figure 2 It is a schematic exploded diagram of the vacuum pump provided by the utility model.

[0024] Figure 3 It is a schematic structural diagram of the housing of the vacuum pump provided by the present utility model.

[0025] Reference numerals:

[0026] 100. Housing; 102. Bearing center column; 104. Circuit board; 106. Hollow cup stator coil; 108. Rotating ring; 110. Magnet; 112. Inlet pipe; 114. Outlet pipe; 116. Rubber sleeve; 118. Electronic components; 120. Connector; 122. Cover; 124. Propeller blade. DETAILED DESCRIPTION

[0027] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] like Figures 1 to 3 As shown, the utility model provides a vacuum pump, comprising:

[0029] A housing 100, wherein a bearing center column 102 is provided on the inner side of the bottom of the housing 100;

[0030] The control mechanism includes a circuit board 104 , which is disposed in the housing 100 and sleeved on the bearing center column 102 ;

[0031] The power mechanism includes a coreless stator coil 106 and a rotating ring 108. The coreless stator coil 106 is disposed on the side of the circuit board 104 facing the bottom of the housing 100. The rotating ring 108 is sleeved on the coreless stator coil 106. The outer wall of the rotating ring 108 is circumferentially provided with propeller blades 124, and the inner wall of the rotating ring 108 is circumferentially provided with a Ru magnet 110. The Ru magnet 110 is electromagnetically inductively adapted to the coreless stator coil 106 when energized. It is understood that the housing 100, as a protective component of the entire machine, can be made of plastic or metal. The housing 100 has a barrel-shaped structure, and a bearing center column 102 is provided at the bottom of the housing 100. The bearing center column 102 is located inside the housing 100, and the axis of the bearing center column 102 coincides with the central axis of the housing 100.

[0032] Furthermore, the control mechanism is housed within the housing 100 and specifically includes a circuit board 104. A through-hole is provided at the center of the circuit board 104. The circuit board 104 is horizontally positioned within the housing 100, with the bearing center column 102 passing through the through-hole, allowing the circuit board 104 to be fitted onto the bearing center column 102. The housing 100 protects the circuit board 104, which serves as an electrical connection between the external controller and the internal power mechanism. The bearing center column 102 also effectively limits the assembly and disassembly of the circuit board 104. It should also be noted that the housing 100, the bearing center column 102, and the circuit board 104 are coaxial.

[0033] Furthermore, the power mechanism, serving as the vacuum power output mechanism for the entire machine, specifically includes a coreless stator coil 106 and a rotating ring 108. The coreless stator coil 106 is disposed on the bottom side of the circuit board 104, that is, the side of the circuit board 104 facing the bottom of the housing 100. The rotating ring 108 is sleeved onto the outside of the coreless stator coil 106. A plurality of propeller blades 124 are evenly distributed along the outer wall of the rotating ring 108, and a plurality of Ru magnets 110 are circumferentially disposed along the inner wall of the rotating ring 108. The Ru magnets 110 are adapted to electromagnetic induction with the coreless stator coil 106 when energized.

[0034] It should be noted that the housing 100, the bearing center column 102, the circuit board 104, the coreless stator coil 106, and the rotating ring 108 are coaxially assembled. The coreless stator coil 106 is electrically connected to the circuit board 104. Because the coreless stator coil 106 has a fixed winding pattern, it generates an alternating magnetic field when energized. The rotating ring 108 is mounted on the bearing center column 102 via a bearing and can rotate relative to the bearing center column 102. The Ru magnet 110 generates electromagnetic induction with the coreless stator coil 106, generating a driving force that drives the rotating ring 108 and the propeller blades 124 to rotate synchronously.

[0035] Specifically, by setting a bearing center column 102 at the bottom of the shell 100, the control mechanism and the power mechanism are centrally installed in the shell 100, and the circuit board 104, the hollow cup stator coil 106 and the rotating ring 108 are assembled on the bearing center column 102, thereby simplifying the overall structure, and the whole machine is small in size and low in height; on the other hand, the hollow cup stator coil 106 achieves low power consumption, and the outer wall of the rotating ring 108 is circumferentially provided with propeller blades 124, which can effectively reduce rotation noise and improve the overall performance and applicability of the vacuum pump.

[0036] According to one embodiment of the present invention, the bottom of the housing 100 is provided with an air inlet and an air outlet. An air inlet pipe 112 corresponding to the air inlet and an air outlet pipe 114 corresponding to the air outlet are provided on the outer side of the bottom of the housing 100. Furthermore, the bottom of the housing 100 is provided with an air inlet and an air outlet. The corresponding air inlet pipe 112 communicates with the housing 100 through the air inlet, and the air outlet pipe 114 communicates with the housing 100 through the air outlet. The air inlet pipe 112 and the air outlet pipe 114 are integrally formed with the housing 100 and can be made of plastic or metal, thereby achieving a circulation of gas within the housing 100. In other words, gas enters the housing 100 through the air inlet from the air inlet pipe 112 and is discharged from the housing 100 through the air outlet and the air outlet pipe 114.

[0037] According to one embodiment of the present invention, a rubber sleeve 116 is provided within the air inlet, and a cross-shaped reinforcing rib is provided within the rubber sleeve 116. A thin film is provided on the side of the rubber sleeve 116 facing away from the air inlet pipe 112. It is understood that the cross-shaped reinforcing rib is provided within the rubber sleeve 116 to enhance the structural and support strength of the rubber sleeve 116, thereby ensuring that gas passes sequentially through the air inlet pipe 112 and the rubber sleeve 116 and enters the housing 100. A thin film is provided on one side of the rubber sleeve 116 to facilitate gas intake and prevent gas within the housing 100 from being discharged through the air inlet.

[0038] According to one embodiment of the present invention, an electronic component 118 is provided on the side of the circuit board 104 facing away from the bottom of the housing 100. A three-phase pin is provided on the side of the circuit board 104 facing the bottom of the housing 100. The coreless stator coil 106 is soldered to the side of the circuit board 104 facing the bottom of the housing 100 and electrically connected to the electronic component 118 via the three-phase pin. The electronic component 118 is used to adjust the magnetic field direction of the coreless stator coil 106. It is understood that the electronic component 118 is provided on the upper side of the circuit board 104, that is, the side of the circuit board 104 facing away from the bottom of the housing 100. In this embodiment, the electronic component 118 is fixed to the circuit board 104 by soldering. The electronic component 118 is connected to the coreless stator coil 106, thereby enabling the electronic component 118 to adjust the magnetic field direction of the coreless stator coil.

[0039] Furthermore, three-phase pins are provided on the bottom side of the circuit board 104, through which the electronic components 118 are connected to the coreless stator coil 106. To ensure the connection strength between the coreless stator coil 106 and the circuit board 104, in this embodiment, the coreless stator coil 106 is fixed to the bottom side of the circuit board 104 by welding.

[0040] According to one embodiment of the present invention, the inner sidewall of the housing 100 is provided with a flange, and the circuit board 104 is placed on the flange. It is understood that in order to ensure the installation stability of the circuit board 104 in the housing 100, the inner sidewall of the housing 100 is provided with a flange, and the edge of the circuit board 104 is overlapped on the flange, so that the flange provides stable support for the circuit board 104.

[0041] In one example, a pressing plate is provided on the flange, and the circuit board 104 is pressed to the upper side of the flange by the pressing plate to improve stability.

[0042] According to one embodiment of the present invention, a connector 120 is provided on a side of the circuit board 104 facing away from the bottom of the housing 100. The connector 120 is used to electrically connect to an external controller to receive command signals. It is understood that the connector 120 is welded to the upper side of the circuit board 104, and the connector 120 and the electronic component 118 are located on the same side of the circuit board 104. The connector 120 is electrically connected to the external controller to receive command signals. Based on the command signals, the electronic component 118 controls the coreless stator coil 106 to adjust the magnetic field direction.

[0043] According to one embodiment of the present invention, a plurality of grooves are circumferentially provided on the inner side wall of the rotating ring 108, and the Ru magnets 110 are provided in the grooves, and the polarities of the ends of the two adjacent Ru magnets 110 that are close to each other are opposite. It can be understood that the inner side wall of the rotating ring 108 is provided with a plurality of grooves, and the plurality of grooves are evenly provided along the circumference of the rotating ring 108. Accordingly, a plurality of Ru magnets 110 are provided, and the Ru magnets 110 correspond one to one with the grooves. The Ru magnets 110 are provided in the grooves along the axial direction of the shell 100, and the polarities of the ends of the two adjacent Ru magnets 110 that are close to each other are opposite. For the sake of convenience of understanding, the Ru magnets 110 are all arranged vertically, and the upper end of one of the two adjacent Ru magnets 110 is the S pole, and the upper end of the other Ru magnet 110 is the N pole, so as to achieve electromagnetic induction adaptation with the hollow cup stator coil 106 after power is applied.

[0044] According to one embodiment of the present invention, the Ru magnet 110 is fixed in the groove by photosensitive adhesive. It is understood that in order to ensure the installation strength of the Ru magnet 110, the Ru magnet 110 is fixed in the groove by photosensitive adhesive to effectively prevent it from falling off.

[0045] According to one embodiment of the present invention, a cover 122 is further included. The cover 122 is positioned over the top of the housing 100 and has a through-hole adapted to fit through the bearing center column 102. It will be appreciated that the cover 122 is adapted to seal the housing 100, wherein the cover 122 is positioned over the top of the housing 100 to encapsulate and protect the control mechanism and power mechanism disposed within the housing 100. A through-hole is provided at the center of the cover 122, through which the top end of the bearing center column 102 passes.

[0046] In one example, the top of the bearing center column 102 is provided with a thread and is exposed outside the through-hole. The cover 122 is screwed to the top of the bearing center column 102 by a locking nut to achieve relative fixation between the cover 122 and the bearing center column 102.

[0047] According to one embodiment of the present invention, the cover 122 is connected to the housing 100 via a snap assembly. It is understood that to ensure the connection strength between the cover 122 and the housing 100, the cover 122 is detachably connected to the housing 100 via the snap assembly. The snap assembly can be a clamp or a spring buckle.

[0048] The working process of a vacuum pump provided by the utility model is as follows:

[0049] When the external controller sends an instruction to the connector 120 and provides voltage to the entire machine, the circuit board 104 starts to work, sends the control signal to the hollow cup stator coil 106 through the electronic component 118, and supplies power. The hollow cup stator coil 106 generates an alternating magnetic field. Under the action of the alternating magnetic field, the Ru magnet 110 rotates, thereby driving the rotating ring 108 to rotate, and the rotating ring 108 drives the propeller blades 124 to rotate, so that negative air pressure is formed in the shell 100. It is necessary to extract air from the outside. The gas enters the shell 100 through the air inlet pipe 112. Due to the action of the rubber sleeve 116, the gas can only enter the shell 100 from the air inlet and cannot be released to the outside. When the propeller blade 124 rotates from the position of the air inlet, the gas is inhaled. When the propeller blade 124 rotates from the position of the air outlet, the gas is discharged from the air outlet, thereby forming a closed loop of the entire workflow.

[0050] The present invention provides a vacuum pump, which provides a bearing center column 102 at the bottom of the housing 100, thereby centrally installing a control mechanism and a power mechanism in the housing 100, and completing the assembly of a circuit board 104, a hollow cup stator coil 106 and a rotating ring 108 on the bearing center column 102, thereby simplifying the overall structure, and the whole machine is small in size and low in height; on the other hand, the hollow cup stator coil 106 achieves low power consumption, and the outer wall of the rotating ring 108 is circumferentially provided with propeller blades 124, which can effectively reduce rotation noise and improve the overall performance and applicability of the vacuum pump.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A vacuum pump, characterized in that: include: A housing (100), wherein a bearing center column (102) is provided on the inner side of the bottom of the housing (100); A control mechanism includes a circuit board (104), wherein the circuit board (104) is disposed in the housing (100) and is sleeved on the bearing center column (102); A power mechanism comprises a coreless stator coil (106) and a rotating ring (108), wherein the coreless stator coil (106) is arranged on a side of the circuit board (104) facing the bottom of the housing (100), and the rotating ring (108) is sleeved on the coreless stator coil (106). A propeller blade (124) is circumferentially provided on the outer wall of the rotating ring (108), and a Ru magnet (110) is circumferentially provided on the inner wall of the rotating ring (108). The Ru magnet (110) is adapted to electromagnetic induction with the coreless stator coil (106) after power is supplied.

2. The vacuum pump according to claim 1, characterized in that An air inlet hole and an air outlet hole are provided at the bottom of the shell (100), and an air inlet pipe (112) corresponding to the air inlet hole and an air outlet pipe (114) corresponding to the air outlet hole are provided on the outside of the bottom of the shell (100).

3. The vacuum pump according to claim 2, characterized in that A rubber sleeve (116) is provided in the air inlet hole, a cross reinforcement rib is provided inside the rubber sleeve (116), and a film is provided on the side of the rubber sleeve (116) facing away from the air inlet pipe (112).

4. The vacuum pump according to claim 1, wherein An electronic component (118) is provided on the side of the circuit board (104) facing away from the bottom of the housing (100), and a three-phase pin is provided on the side of the circuit board (104) facing the bottom of the housing (100). The hollow cup stator coil (106) is welded to the side of the circuit board (104) facing the bottom of the housing (100) and is electrically connected to the electronic component (118) through the three-phase pin. The electronic component (118) is used to adjust the magnetic field direction of the hollow cup stator coil (106).

5. The vacuum pump according to claim 1, wherein The inner side wall of the housing (100) is provided with a flange, and the circuit board (104) is mounted on the flange.

6. The vacuum pump according to claim 1, wherein A connector (120) is provided on a side of the circuit board (104) facing away from the bottom of the housing (100), and the connector (120) is used to be electrically connected to an external controller to receive a command signal.

7. The vacuum pump according to claim 1, wherein A plurality of grooves are circumferentially arranged on the inner side wall of the rotating ring (108), and the Ru magnets (110) are arranged in the grooves and correspond one to one, and the polarities of the ends of two adjacent Ru magnets (110) that are close to each other are opposite.

8. The vacuum pump according to claim 7, characterized in that The Ru magnet (110) is fixed in the groove by photosensitive adhesive.

9. The vacuum pump according to any one of claims 1 to 8, characterized in that It also includes a cover body (122), which is arranged on the top of the housing (100), and the cover body (122) is provided with a through hole adapted to pass through the bearing center column (102).

10. The vacuum pump according to claim 9, characterized in that The cover (122) is connected to the housing (100) via a snap assembly.

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