Large-flow mute volumetric air pump

Abstract

The utility model relates to a high-flow mute volumetric air pump which comprises a lower shell, a PCBA (printed circuit board assembly) arranged in the lower shell, a stator, a rotor, an air path assembly and an upper shell, the stator is installed on the PCBA board, the rotor is installed on the stator and rotates relative to the stator, the rotor is sleeved with the air path assembly, a plurality of air paths distributed in a spiral upward mode are arranged on the air path assembly, a plurality of rolling bodies are arranged on the rotor, and the shortest distance between the adjacent rolling bodies is smaller than the transverse distance between the air path upper exhaust hole and the air path lower air inlet hole. When the rolling bodies rotate along with the rotor to press the uppermost end of the air path, the adjacent rolling bodies can press the tail end of the air path, the upper shell is installed on the lower shell, the upper shell is provided with an outer exhaust area and an inner air inlet area, the outer exhaust area is communicated with the upper end of the air path assembly, and the rotor is communicated with the inner air inlet area. The air pump is continuous and pulseless in exhaust, axially symmetrical in structure, free of axial vibration in the operation process, free of a valve one-way valve structure, low in operation noise, capable of achieving integrated design and small in size.

Description

Technical Field

[0001] The utility model belongs to the technical field of air pumps and relates to a large-flow silent positive displacement air pump. Background Art

[0002] Chinese patent CN 118049363 A discloses "a rotary air pump". Due to its unreasonable structural design, the air pump has the following defects: (1) It adopts a diaphragm leather cup structure, which is similar to a plunger pump, and the exhaust air is pulsating; (2) The DC motor drives the eccentric wheel, and the operation vibration is large; (3) The valve check valve controls the intake and exhaust, and the valve plate moves 8 times per rotation, resulting in high operating noise and vibration; (4) The motor and the pump head are designed separately, with low integration and large size. Utility Model Content

[0003] In view of the above-mentioned technical problems and shortcomings, the purpose of the utility model is to provide a large-flow silent positive displacement air pump, which has continuous exhaust without pulsation, axial symmetry, no axial vibration during operation, no valve one-way valve structure, low operating noise, and can achieve an integrated design with a small size.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A large-flow silent positive displacement air pump, comprising a lower shell, a PCBA board, a stator, a rotor, an air path assembly, and an upper shell; wherein the PCBA board, the stator, the rotor, and the air path assembly are all arranged in the lower shell, the stator is mounted on the PCBA board, the rotor is mounted on the stator and rotates relative to the stator, the air path assembly is sleeved on the rotor, a plurality of air paths arranged in a spiral upward manner are arranged on the air path assembly, a plurality of rolling bodies are arranged on the rotor, and the shortest distance between two adjacent rolling bodies is less than the exhaust gas on the air path. The lateral distance between the hole and the lower air inlet hole of the air path is such that when the rolling body rotates with the rotor to press the uppermost end of the air path, the adjacent rolling body can press the end of the air path. The upper shell is installed on the lower shell, and an outer exhaust area and an inner air inlet area are provided on one side where the upper shell is connected to the lower shell. The air pipe joint on the top surface of the upper shell is connected to the outer exhaust area, and the air inlet hole is connected to the inner air inlet area. The upper shell is used to encapsulate the PCBA board, the stator, the rotor, and the air path assembly in the lower shell, so that the outer exhaust area is connected to the upper end of the air path assembly, and the rotor is connected to the inner air inlet area.

[0006] As a preferred embodiment of the present invention, the pins on the PCBA board are arranged in a sheath on the outside of the lower shell, and the sheath on the lower shell is used to be electrically connected to the wiring harness connector and connected to the power module through the wiring harness connector.

[0007] As a preferred embodiment of the present invention, the stator is a coil, the coil is mounted on a PCBA board and electrically connected to a power supply circuit on the PCBA board, and the coil is powered by a power module; the rotor is a magnet assembly, the magnet assembly is mounted on the coil, and rotates relative to the coil.

[0008] As a preferred embodiment of the utility model, the air circuit assembly includes an upper connecting ring and a lower connecting ring, the upper connecting ring is provided with a plurality of air circuit upper mounting holes, the lower connecting ring is provided with a plurality of air circuit lower mounting holes, air pipes are arranged between the air circuit upper mounting holes and the air circuit lower mounting holes according to a set number of staggered hole numbers, so that the air pipes are arranged in a spiral upward manner, and the internal pipeline of the air pipe serves as the air circuit.

[0009] As a preferred embodiment of the present invention, the air path assembly includes an inner barrel and an outer barrel, the outer barrel is mounted on the inner barrel, and the inner barrel and the outer barrel are separated by a dividing strip to form a plurality of air paths arranged in a spiral upward manner.

[0010] As a preferred embodiment of the utility model, one side where the upper shell is connected to the lower shell is divided into an annular outer exhaust area and an annular inner air intake area by a positioning separation ring, the upper end of the rotor is arranged in the annular inner air intake area, and the positioning separation ring is used to limit the rotor axially.

[0011] As a further preferred embodiment of the present invention, the magnet assembly includes a magnet and a mounting frame mounted on the magnet, a connecting shaft is provided at the axis center of the mounting frame, the upper and lower ends of the connecting shaft are connected to the stator through bearings, and a plurality of rolling body frames are arranged at intervals in the circumferential direction of the mounting frame, and rolling bodies are provided on the rolling body frames.

[0012] As a further preferred embodiment of the present invention, the rolling body is a long bearing; or, the rolling body is a columnar body, and the upper and lower ends of the columnar body are installed on the upper and lower ends of the rolling body frame through bearings.

[0013] Advantages and beneficial effects of the utility model:

[0014] (1) The air pump structure provided by the utility model has continuous exhaust without pulsation, axial symmetry of the structure, no axial vibration during operation, no valve check valve structure, low operating noise, and can realize integrated design with small size.

[0015] (2) The gas input into the air inlet of the air pump provided by the utility model enters from the upper end of the rotor, flows back to the end of the air path assembly after passing through the end of the rotor, and then enters the air path. Finally, under the action of the rotor (the rotor rotates and squeezes the air path), the gas in the air path is gradually compressed and discharged, and then discharged to the air outlet pipeline after passing through the upper shell. This method can reduce the heat generated during the operation of the air pump and extend the service life of the air pump.

[0016] (3) The air pump driving part provided by the utility model adopts a coil + magnet solution, which can automatically adjust the power according to the load to ensure a constant speed.

[0017] (4) The air path component provided by the utility model preferably adopts the solution of inner barrel + outer barrel. This method can make fuller use of space and has a larger displacement. At the same time, connecting them together is more conducive to air path rebound and air intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is an exploded schematic diagram of the utility model large flow silent positive displacement air pump;

[0020] Figure 2 This is a schematic diagram of the utility model of a large flow silent positive displacement air pump after assembly;

[0021] Figure 3 For this utility model Figure 1 Section along AA;

[0022] Figure 4 For this utility model Figure 1 Section along BB;

[0023] Figure 5 Axonometric measurement of the utility model large flow silent positive displacement air pump Figure 1 ;

[0024] Figure 6 Axonometric measurement of the utility model large flow silent positive displacement air pump Figure 2 ;

[0025] Figure 7 It is a schematic diagram of the second structure of the gas circuit assembly of the utility model;

[0026] Figure markings: lower shell 1, PCBA board 2, stator 3, rotor 4, air path assembly 5, upper shell 6, bearing 7, positioning separation ring 8, sleeve 101, pin 201, magnet 401, mounting frame 402, connecting shaft 403, rolling body 404, rolling body frame 405, inner barrel 501, outer barrel 502, dividing strip 503, air pipe joint 601, external exhaust area 602, internal air intake area 603, air intake hole 604, upper connecting ring 5-1, lower connecting ring 5-2, air pipe 5-3. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "upper end", "lower end", etc. is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does 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 cannot be understood as a limitation on the present application.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] like Figures 1 to 6 As shown, this embodiment provides a large-flow silent positive displacement air pump, including a lower shell 1, a PCBA board 2, a stator 3, a rotor 4, an air circuit assembly 5, and an upper shell 6; wherein the PCBA board 2, the stator 3, the rotor 4, and the air circuit assembly 5 are all arranged in the lower shell 1, the pin 204 on the PCBA board 2 is arranged in the sheath 101 outside the lower shell 1, the stator 3 is mounted on the PCBA board 2, the rotor 4 is mounted on the stator 3, and rotates relative to the stator 3, the air circuit assembly 5 is sleeved on the rotor 4, and the air circuit assembly 5 is provided with a plurality of air circuits arranged in a spiral upward manner, and the rotor 4 is provided with a plurality of rolling bodies 404, and the space between two adjacent rolling bodies 404 is 404. The shortest distance is smaller than the lateral distance between the exhaust hole on the gas path and the lower air inlet hole of the gas path, so that when the rolling body 404 rotates with the rotor 4 to press the upper end of the gas path, the adjacent rolling body 404 can press the end of the gas path. The upper shell 6 is installed on the lower shell 1, and an outer exhaust area 602 and an inner air inlet area 603 are provided on one side where the upper shell 6 is connected to the lower shell 1. The air pipe joint 601 on the top surface of the upper shell 6 is connected to the outer exhaust area 602, and the air inlet hole 604 is connected to the inner air inlet area 603. The upper shell 6 is used to encapsulate the PCBA board 2, the stator 3, the rotor 4, and the gas path assembly 5 in the lower shell 1, so that the outer exhaust area 602 is connected to the upper end of the gas path assembly 5, and the rotor 4 is connected to the inner air inlet area 603.

[0031] Further, if Figures 1 to 6 As shown, in this embodiment, the sheath 101 on the lower shell is used to be electrically connected to the wiring harness connector, and connected to the power module through the wiring harness connector; the stator 3 is a coil, and the coil is installed on the PCBA board 2 and is electrically connected to the power supply circuit on the PCBA board 2, and the coil is powered by the power module; the rotor 4 is a magnet assembly, and the magnet assembly is mounted on the coil and rotates relative to the coil.

[0032] Further, if Figure 3 , Figure 5 , Figure 6 As shown, in this embodiment, the magnet assembly includes a magnet 401 and a mounting frame 402 mounted on the magnet, a connecting shaft 403 is provided at the axis center of the mounting frame 402, and the upper and lower ends of the connecting shaft 403 are connected to the stator 3 through bearings 7 (the inner ring of the bearing is fixedly connected to the connecting shaft, and the outer ring of the bearing is fixedly connected to the stator), and a plurality of rolling body frames 405 are arranged at intervals in the circumferential direction of the mounting frame 402, and rolling bodies 404 are provided on the rolling body frames 405.

[0033] Further, if Figure 3 , Figure 5 , Figure 6 As shown, in this embodiment, the air path assembly 5 includes an inner barrel 501 and an outer barrel 502, wherein the outer barrel 502 is mounted on the inner barrel 501, and the inner barrel 501 and the outer barrel 502 are separated by a dividing strip 503 to form a plurality of air paths arranged in a spiral upward manner.

[0034] Further, if Figure 7 As shown, in this embodiment, the gas path assembly 5 can also be another structure, specifically including an upper connecting ring 5-1 and a lower connecting ring 5-2, the upper connecting ring 5-1 is provided with a plurality of gas path upper mounting holes, the lower connecting ring 5-2 is provided with a plurality of gas path lower mounting holes, and an air pipe 5-3 is arranged between the gas path upper mounting holes and the gas path lower mounting holes according to a set number of staggered hole positions, so that the air pipe 5-3 is arranged in a spiral upward manner, and the internal pipeline of the air pipe serves as the gas path.

[0035] It should be noted that the air paths formed by the above-mentioned method in the present invention are all compressible and resilient air paths. The air paths formed by the air pipe are made of rubber material, and the air paths formed by the inner and outer barrels are also preferably made of rubber material.

[0036] Further, if Figure 3 , Figure 5 , Figure 6 As shown, in this embodiment, one side where the upper shell 6 is connected to the lower shell 1 is divided into an annular outer exhaust area and an annular inner air intake area by a positioning separation ring 8, and the upper end of the rotor 4 is arranged in the annular inner air intake area, and the positioning separation ring 8 is used to axially limit the rotor 4.

[0037] Furthermore, in this embodiment, the rolling body 404 is a long bearing; or, the rolling body 404 is a columnar body, and the upper and lower ends of the columnar body are installed on the upper and lower ends of the rolling body frame 405 through bearings, so that the rolling body can also rotate freely when the rotor rotates.

[0038] The above are specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A large-flow silent positive displacement air pump, characterized in that: It comprises a lower shell, a PCBA board, a stator, a rotor, an air path assembly, and an upper shell; wherein the PCBA board, the stator, the rotor, and the air path assembly are all arranged in the lower shell, the stator is mounted on the PCBA board, the rotor is mounted on the stator and rotates relative to the stator, the air path assembly is sleeved on the rotor, a plurality of air paths arranged in a spiral upward manner are provided on the air path assembly, a plurality of rolling bodies are provided on the rotor, the shortest distance between two adjacent rolling bodies is less than the lateral distance between the exhaust hole on the air path and the lower air inlet hole of the air path, so that when the rolling bodies rotate with the rotor to press the upper end of the air path, the adjacent rolling bodies can press the end of the air path, the upper shell is mounted on the lower shell, and an outer exhaust area and an inner air inlet area are provided on one side where the upper shell is connected to the lower shell, the air pipe joint on the top surface of the upper shell is connected to the outer exhaust area, and the air inlet hole is connected to the inner air inlet area, and the upper shell is used to encapsulate the PCBA board, the stator, the rotor, and the air path assembly in the lower shell, so that the outer exhaust area is connected to the upper end of the air path assembly, and the rotor is connected to the inner air inlet area.

2. A large flow silent positive displacement air pump according to claim 1, characterized in that: The pins on the PCBA board are arranged in a sheath outside the lower shell, and the sheath on the lower shell is used to be electrically connected to the wiring harness connector and connected to the power module through the wiring harness connector.

3. A large flow silent positive displacement air pump according to claim 1, characterized in that: The stator is a coil, which is mounted on a PCBA board and electrically connected to a power supply circuit on the PCBA board, and the coil is powered by a power module; the rotor is a magnet assembly, which is sleeved on the coil and rotates relative to the coil.

4. A large flow silent positive displacement air pump according to claim 1, characterized in that: The gas circuit assembly includes an upper connecting ring and a lower connecting ring. The upper connecting ring is provided with a plurality of gas circuit upper mounting holes, and the lower connecting ring is provided with a plurality of gas circuit lower mounting holes. Air pipes are arranged between the gas circuit upper mounting holes and the gas circuit lower mounting holes according to a set number of staggered hole positions, so that the air pipes are arranged in a spiral upward manner, and the internal pipelines of the air pipes serve as the gas circuit.

5. A large flow silent positive displacement air pump according to claim 1, characterized in that: The air path assembly comprises an inner barrel and an outer barrel, wherein the outer barrel is mounted on the inner barrel, and the inner barrel and the outer barrel are separated by a dividing strip to form a plurality of air paths arranged in a spiral upward manner.

6. A large flow silent positive displacement air pump according to claim 1, characterized in that: The side where the upper shell is connected to the lower shell is divided into an annular outer exhaust area and an annular inner intake area by a positioning separation ring. The upper end of the rotor is arranged in the annular inner intake area. The positioning separation ring is used to axially limit the rotor.

7. A large flow silent positive displacement air pump according to claim 3, characterized in that: The magnet assembly includes a magnet and a mounting frame mounted on the magnet. A connecting shaft is provided at the axis center of the mounting frame. The upper and lower ends of the connecting shaft are connected to the stator through bearings. A plurality of rolling body frames are spaced apart in the circumferential direction of the mounting frame, and rolling bodies are provided on the rolling body frames.

8. A large flow silent positive displacement air pump according to claim 7, characterized in that: The rolling body is a long bearing; or, the rolling body is a columnar body, and the upper and lower ends of the columnar body are installed on the upper and lower ends of the rolling body frame through bearings.

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