Pumping mechanism and electronic device

Abstract

A pump mechanism includes an air inlet chamber, a pump chamber, an air inlet valve, an air outlet valve and a pump element. The pump chamber is communicated with the air inlet chamber and includes a first chamber wall and a second chamber wall. The first chamber wall includes a first plate and a second plate oppositely spaced from the first plate. The first plate is provided with a first opening, and the second plate is provided with a second opening. The second chamber wall includes a third plate and a fourth plate oppositely spaced from the third plate. The third plate is provided with a third opening, and the fourth plate is provided with a fourth opening. The air inlet valve is movably accommodated between the first plate and the second plate. In a direction from the first plate to the second plate, a projection of the first opening is located in the air inlet valve, and a projection of the air inlet valve is located in the second opening. The air outlet valve is movably accommodated between the third plate and the fourth plate. In a direction from the third plate to the fourth plate, a projection of the third opening is located in the air outlet valve, and a projection of the air outlet valve is located in the fourth opening. The pump element is communicated with the pump chamber. In addition, the application also provides an electronic device.

Description

Technical Field

[0001] This application relates to an odor sensing technology, and more particularly to a pumping structure and an electronic device having the pumping mechanism. Background Technology

[0002] Odor molecule detection technology mainly utilizes odor sensors. Odor sensors need to be covered with a selectively permeable membrane, through which specific volatile organic molecules can pass and be detected by the odor sensor.

[0003] In general, to improve the detection efficiency of volatile organic molecules, the odor sensor along with the selectively permeable membrane needs to be exposed to the flowing gas environment. However, this practice can easily contaminate and damage the selectively permeable membrane or the odor sensor. Summary of the Invention

[0004] To address the problems in the prior art, this application provides a pumping mechanism.

[0005] In addition, this application also provides an electronic device.

[0006] A pumping mechanism includes an intake chamber, a pumping chamber, an intake valve flap, an exhaust valve flap, and a pumping component. The intake chamber has an intake port and a detection opening. The pumping chamber is connected to the intake chamber. The pumping chamber includes a first chamber wall and a second chamber wall. The first chamber wall includes a first plate and a second plate spaced apart from the first plate. The first plate has a first opening, and the second plate has a second opening. The second chamber wall includes a third plate and a fourth plate spaced apart from the third plate. The third plate has a third opening, and the fourth plate has a fourth opening. The detection opening is located between the intake port and the first opening. The intake valve flap is movably accommodated between the first plate and the second plate. From the first plate to the second plate, the projection of the first opening is located within the intake valve flap, and the projection of the intake valve flap is located within the second opening. The exhaust valve flap is movably housed between the third plate and the fourth plate. From the third plate to the fourth plate, the projection of the third opening lies within the exhaust valve flap, and the projection of the exhaust valve flap lies within the fourth opening. The pumping component communicates with the pumping chamber and is used to increase or decrease the gas pressure in the pumping chamber.

[0007] Furthermore, the pumping component includes an elastic element and a sealing sleeve, the sealing sleeve being in close contact with the pumping chamber, and the elastic element being held between the sealing sleeve and the pumping chamber.

[0008] Furthermore, the first chamber wall also includes a first baffle, a portion of the second plate extending toward the second opening to form the first baffle, and the projection of the first baffle in the direction from the first plate to the second plate is located within the intake valve disc.

[0009] Furthermore, the second chamber wall also includes a second baffle, a portion of the fourth plate extending toward the fourth opening to form the second baffle, and the projection of the second baffle in the direction from the third plate to the fourth plate is located within the exhaust valve flap.

[0010] Furthermore, in the direction from the first plate to the second plate, the first opening is provided corresponding to the second opening, and in the direction from the third plate to the fourth plate, the third opening is provided corresponding to the fourth opening.

[0011] Furthermore, the air intake chamber includes a housing and a cover that cooperates with the housing, the air inlet is located on the cover, and the detection opening is located on the housing.

[0012] Furthermore, the pump chamber also includes a bottom plate, a top plate, and a side plate. The bottom plate and the top plate are spaced apart. The side plate, the first chamber wall, and the second chamber wall surround the bottom plate and the top plate to form the pump chamber. Part of the pumping component protrudes from the top plate.

[0013] Furthermore, the intake valve flap includes a first surface and a second surface, the first surface protruding away from the second surface, the second surface being recessed towards the first surface, the first opening corresponding to the first surface, and the second opening corresponding to the second surface.

[0014] Furthermore, the exhaust valve flap includes a third surface and a fourth surface, the third surface protruding away from the fourth surface, the fourth surface being recessed towards the third surface, the third opening corresponding to the third surface, and the fourth opening corresponding to the fourth surface.

[0015] An electronic device includes a selectively permeable membrane, an odor sensor, and a pumping mechanism as described above, wherein the selectively permeable membrane is disposed on the odor sensor and is disposed corresponding to the detection opening.

[0016] Compared to existing technologies, the pumping mechanism provided in this application, by setting up an inlet chamber and a pumping chamber, and by placing an inlet valve between the inlet chamber and the pumping chamber, allows the gas in the inlet chamber to flow unidirectionally to the pumping chamber, and by placing an exhaust valve between the pumping chamber and the external environment, allows the gas in the pumping chamber to flow unidirectionally to the external environment, thereby providing a unidirectional airflow to the selectively permeable membrane. Simultaneously, this pumping mechanism can be mounted on the selectively permeable membrane, thereby protecting the selectively permeable membrane from contamination and damage. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the pumping mechanism provided in this application.

[0018] Figure 2 for Figure 1 An exploded view of the pumping mechanism is shown.

[0019] Figure 3 For part Figure 1 The diagram shows a pumping mechanism (gas can enter the pumping chamber from the inlet chamber).

[0020] Figure 4 For part Figure 1 The diagram shows a pumping mechanism (gas can be discharged from the pumping chamber to the external environment).

[0021] Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of this application.

[0022] Explanation of main component symbols

[0023] Pumping mechanism 100

[0024] Intake chamber 10

[0025] Air intake 11

[0026] Detection opening 12

[0027] Box 13

[0028] Box lid 14

[0029] Pump chamber 20

[0030] First chamber wall 21

[0031] First board 211

[0032] Second board 212

[0033] First storage space 213

[0034] First opening 214

[0035] Second opening 215

[0036] First baffle 216

[0037] Second chamber wall 22

[0038] Third board 221

[0039] Fourth board 222

[0040] Second storage space 223

[0041] Third opening 224

[0042] Fourth opening 225

[0043] Second baffle 226

[0044] Through hole 23

[0045] Base plate 24

[0046] Top plate 25

[0047] Side panel 26

[0048] Intake valve disc 30

[0049] First surface 31

[0050] Second surface 32

[0051] Exhaust valve disc 40

[0052] Third surface 41

[0053] Fourth surface 42

[0054] Pump component 50

[0055] Elastic component 51

[0056] Sealing sleeve 52

[0057] Selective permeable membrane 200

[0058] Odor Sensor 300

[0059] Electronic equipment 400

[0060] First gap S1

[0061] Second gap S2

[0062] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0063] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0064] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also exist in an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or may also exist in an intervening component.

[0065] Please see Figure 1 and Figure 5 This application provides a pumping mechanism 100 for providing a flow of air to a selectively permeable membrane 200.

[0066] Please see Figure 1 and Figure 2 The pumping mechanism 100 includes an air inlet chamber 10, a pumping chamber 20, an air inlet valve 30, an air outlet valve 40, and a pumping component 50. The air inlet chamber 10 is connected to the pumping chamber 20. The air inlet chamber 10 is provided with an air inlet 11 and a detection opening 12. The pumping chamber 20 draws air from the external environment into the chamber through the air inlet 11, and some of the air entering the air inlet chamber 10 flows out through the detection opening 12. The selectively permeable membrane 200 (see...) Figure 5 The detection opening 12 is provided, and a portion of the air flowing out of the detection opening 12 can be filtered by the selectively permeable membrane 200, and specific volatile small molecules can be sensed by the odor sensor 300.

[0067] Please see Figure 2 and Figure 3 The pump chamber 20 includes a first chamber wall 21 and a second chamber wall 22. The first chamber wall 21 includes a first plate 211 and a second plate 212. The first plate 211 and the second plate 212 are spaced apart to form a first accommodating space 213. The first plate 211 has a first opening 214, and the second plate 212 has a second opening 215. The first opening 214 and the second opening 215 communicate with the first accommodating space 213. The intake valve 30 is movably disposed within the first accommodating space 213. Along the direction from the first plate 211 to the second plate 212, the forward projection of the first opening 214 is located within the intake valve 30, and the forward projection of the intake valve 30 is located within the second opening 215, that is, there is a first gap S1 between the intake valve 30 and the second opening 215. When the intake valve disc 30 moves within the first accommodating space 213, the intake valve disc 30 can completely block the first opening 214, but cannot block the second opening 215.

[0068] Please see Figure 3 and Figure 4 The second chamber wall 22 includes a third plate 221 and a fourth plate 222. The third plate 221 and the fourth plate 222 are spaced apart to form a second accommodating space 223. The third plate 221 has a through-hole 224, and the fourth plate 222 has a through-hole 225. The third opening 224 and the fourth opening 225 communicate with the second accommodating space 223. The exhaust valve flap 40 is movably disposed within the second accommodating space 223. Along the direction from the third plate 221 to the fourth plate 222, the forward projection of the third opening 224 is located within the exhaust valve flap 40, and the forward projection of the exhaust valve flap 40 is located within the fourth opening 225, that is, there is a second gap S2 between the exhaust valve flap 40 and the fourth opening 225. When the exhaust valve 40 moves within the second accommodating space 223, the exhaust valve 40 can completely block the third opening 224, but cannot block the fourth opening 225, which is connected to the external environment.

[0069] Please see Figure 2 , Figure 3 and Figure 4 The pumping component 50 is connected to the pumping chamber 20. The pumping component 50 is used to compress or expand the gas in the pumping chamber 20, that is, to change the pressure in the pumping chamber 20.

[0070] Specifically, when the pumping component 50 compresses the gas in the pumping chamber 20, the pressure in the pumping chamber 20 is greater than the pressure in the intake chamber 10. The intake valve 30 moves toward the first opening 214 and completely blocks the first opening 214. At the same time, the exhaust valve 40 moves toward the fourth opening 225. Since the exhaust valve 40 cannot block the fourth opening 225, the gas in the pumping chamber 20 can be discharged to the external environment through the third opening 224 and the second gap S2. However, since the first opening 214 is completely blocked by the intake valve 30, the air in the intake chamber 10 cannot enter the pumping chamber 20.

[0071] When the pumping component 50 expands the gas in the pumping chamber 20, the pressure in the pumping chamber 20 is lower than the pressure in the inlet chamber 10. The inlet valve 30 moves toward the second opening 215, and because the inlet valve 30 cannot block the second opening 215, the gas in the inlet chamber 10 can enter the pumping chamber 20 through the first opening 214 and the first gap S1. Simultaneously, the exhaust valve 40 moves toward the third opening 224, and because the exhaust valve 40 can completely block the third opening 224, gas from the external environment cannot enter the pumping chamber 20 through the third opening 224.

[0072] The pumping mechanism 100 provided in this application, by setting an inlet chamber 10 and a pumping chamber 20, and by placing an inlet valve 30 between the inlet chamber 10 and the pumping chamber 20, allows gas in the inlet chamber 10 to flow unidirectionally to the pumping chamber 20, and by placing an exhaust valve 40 between the pumping chamber 20 and the external environment, allows gas in the pumping chamber 20 to flow unidirectionally to the external environment, thereby providing a unidirectional airflow to the selectively permeable membrane 200. Simultaneously, the pumping mechanism 100 can be mounted on the selectively permeable membrane 200, thereby protecting the selectively permeable membrane 200 from contamination and damage.

[0073] Please see Figure 1 and Figure 2 In this embodiment, the pumping component 50 includes an elastic element 51 and a sealing sleeve 52. The pumping chamber 20 has a through hole 23, and the sealing sleeve 52 is tightly fitted to the through hole 23 and protrudes outside the pumping chamber 20. The elastic element 51 abuts against the sealing sleeve 52 and the pumping chamber 20. When an external force compresses the sealing sleeve 52, the gas in the pumping chamber 20 communicating with the sealing sleeve 52 is compressed, and the pressure in the pumping chamber 20 is greater than the pressure in the inlet chamber 10. At the same time, the elastic element 51 is compressed to store elastic potential energy. When the external force is removed, the elastic element 51 extends and releases the elastic potential energy. The end of the elastic element 51 pushes the sealing sleeve 52 outward, causing the gas in the pumping chamber 20 communicating with the sealing sleeve 52 to expand, and the pressure in the pumping chamber 20 is less than the pressure in the inlet chamber 10. In other embodiments of this application, the pumping component 50 may also be an external air compressor and vacuum generator.

[0074] Please see Figure 3 and Figure 4In this embodiment, the first chamber wall 21 further includes a first baffle 216, with a portion of the second plate 212 extending toward the second opening 215 to form the first baffle 216. The projection of the first baffle 216 from the first plate 211 to the second plate 212 is located within the intake valve flap 30. That is, the first baffle 216 can prevent the intake valve flap 30 from passing through the second opening 215, thereby confining the intake valve flap 30 within the first accommodating space 213. Similarly, the second chamber wall 22 also includes a second baffle 226, with a portion of the fourth plate 222 extending toward the fourth opening 225 to form the second baffle 226. The projection of the second baffle 226 from the third plate 221 to the fourth plate 222 is located within the exhaust valve flap 40. That is, the second baffle 226 can prevent the exhaust valve flap 40 from passing through the fourth opening 225, thereby confining the exhaust valve flap 40 within the second accommodating space 223.

[0075] Please see Figure 2 , Figure 3 or Figure 4 In this embodiment, from the first plate 211 to the second plate 212, the first opening 214 is configured corresponding to the second opening 215. When the pressure in the pump chamber 20 changes, the pressures on both sides of the intake valve 30 are approximately collinear, thus preventing the intake valve 30 from shifting within the first accommodating space 213. Similarly, from the third plate 221 to the fourth plate 222, the third opening 224 is configured corresponding to the fourth opening 225. When the pressure in the pump chamber 20 changes, the pressures on both sides of the exhaust valve 40 are approximately collinear, thus preventing the exhaust valve 40 from shifting within the second accommodating space 223. It is understood that in other embodiments of this application, if a limit rail is provided in the first accommodating space 213 or the second accommodating space 223, the first opening 214 and the second opening 215 may not correspond, and the third opening 224 and the fourth opening 225 may not correspond.

[0076] Please see Figure 2 and Figure 3In this embodiment, the air inlet chamber 10 and the pumping chamber 20 are combined to form a square structure. The air inlet chamber 10 includes a box body 13 and a box cover 14, which are matched to form the air inlet chamber 10. The box cover 14 has a through-hole 11. The box body 13 has a through-hole 12. The pumping chamber 20 also includes a bottom plate 24, a top plate 25, and a side plate 26. The top plate 25 and the bottom plate 24 are spaced apart, and the side plate 26, the first chamber wall 21, and the second chamber wall 22 surround the bottom plate 24 and the top plate 25 to form the pumping chamber 20. The top plate 25 has a through-hole 23, and the sealing sleeve 52 protrudes from the top plate 25.

[0077] Please see Figure 2 and Figure 3 In this embodiment, the top plate 25, part of the side plate 26, part of the first chamber wall 21, part of the second chamber wall 22, and the box cover 14 are integrally formed structures, and the bottom plate 24, another part of the side plate 26, another part of the first chamber wall 21, another part of the second chamber wall 22, and the box body 13 are integrally formed structures. In actual use, the two integrally formed parts can be connected.

[0078] Please see Figure 3 and Figure 4 In this embodiment, the intake valve flap 30 is generally petal-shaped, and includes a first surface 31 and a second surface 32 corresponding to the first surface 31. The first surface 31 protrudes outward from the second surface 32, and the second surface 32 is recessed inward toward the first surface 31; that is, the first surface 31 is convex, and the second surface 32 is concave. The first opening 214 corresponds to the first surface 31, and the second opening 215 corresponds to the second surface 32. Since the first surface 31 is convex, it can effectively seal the first opening 214. Part of the second surface 32 can be blocked by the first baffle 216. The inner wall of the second opening 215 and the edge of the second surface 32 form the first gap S1, which allows gas to pass through.

[0079] Please see Figure 3 and Figure 4In this embodiment, the exhaust valve flap 40 is generally petal-shaped, and includes a third surface 41 and a fourth surface 42 corresponding to the third surface 41. The third surface 41 protrudes away from the fourth surface 42, and the fourth surface 42 is recessed towards the third surface 41. That is, the third surface 41 is a convex surface, and the fourth surface 42 is a concave surface. The third opening 224 corresponds to the third surface 41, and the fourth opening 225 corresponds to the fourth surface 42. Since the third surface 41 is a convex surface, it can effectively seal the third opening 224. Part of the fourth surface 42 can be blocked by the second baffle 226. The inner wall of the fourth opening 225 and the edge of the fourth surface 42 form the second gap S2, which allows gas to pass through.

[0080] Please see Figure 2 and Figure 5 This application also provides an electronic device 400, which includes a selectively permeable membrane 200, an odor sensor 300, and a pumping mechanism 100. The selectively permeable membrane 200 is disposed on the odor sensor 300, and the selectively permeable membrane 200 is disposed corresponding to the detection opening 12. Specifically, the electronic device 400 can be a mobile phone, smartwatch, or other electronic device 400 with gas analysis capabilities.

[0081] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A pumping mechanism, characterized in that, include: The air intake chamber is equipped with an air inlet and a detection opening, and the air inlet is connected to the external environment; A pumping chamber, connected to the air inlet chamber, includes a first chamber wall and a second chamber wall. The first chamber wall includes a first plate and a second plate spaced apart from the first plate. The first plate has a first opening, and the second plate has a second opening. The second chamber wall includes a third plate and a fourth plate spaced apart from the third plate. The third plate has a third opening, and the fourth plate has a fourth opening. The detection opening is located between the air inlet and the first opening, and the fourth opening communicates with the external environment. An intake valve flap is movably housed between the first plate and the second plate. In the direction from the first plate to the second plate, the projection of the first opening is located within the intake valve flap, and the projection of the intake valve flap is located within the second opening. An exhaust valve flap is movably accommodated between the third plate and the fourth plate. In the direction from the third plate to the fourth plate, the projection of the third opening lies within the exhaust valve flap, and the projection of the exhaust valve flap lies within the fourth opening. A pumping component, connected to the pumping chamber, is used to compress or expand the gas in the pumping chamber.

2. The pumping mechanism as described in claim 1, characterized in that, The pumping component includes an elastic element and a sealing sleeve. The sealing sleeve is in close contact with the pumping chamber, and the elastic element abuts against the sealing sleeve and the pumping chamber.

3. The pumping mechanism as described in claim 1, characterized in that, The first chamber wall also includes a first baffle, a portion of the second plate extending toward the second opening to form the first baffle, and the projection of the first baffle in the direction from the first plate to the second plate is located within the intake valve flap.

4. The pumping mechanism as described in claim 1, characterized in that, The second chamber wall also includes a second baffle, a portion of the fourth plate extending toward the fourth opening to form the second baffle, and the projection of the second baffle in the direction from the third plate to the fourth plate is located within the exhaust valve flap.

5. The pumping mechanism as described in claim 1, characterized in that, In the direction from the first plate to the second plate, the first opening is provided corresponding to the second opening, and in the direction from the third plate to the fourth plate, the third opening is provided corresponding to the fourth opening.

6. The pumping mechanism as described in claim 5, characterized in that, The air intake chamber includes a housing and a cover that cooperates with the housing. The air inlet is located on the cover, and the detection opening is located on the housing.

7. The pumping mechanism as described in claim 6, characterized in that, The pump chamber further includes a bottom plate, a top plate, and side plates. The bottom plate and the top plate are opposite to each other and spaced apart. The side plates, the first chamber wall, and the second chamber wall surround the bottom plate and the top plate to form the pump chamber. Part of the pumping components protrude from the top plate.

8. The pumping mechanism as described in claim 1, characterized in that, The intake valve disc includes a first surface and a second surface. The first surface protrudes outward from the second surface, and the second surface is recessed inward toward the first surface. The first opening corresponds to the first surface, and the second opening corresponds to the second surface.

9. The pumping mechanism as described in claim 1, characterized in that, The exhaust valve flap includes a third surface and a fourth surface. The third surface protrudes outward from the fourth surface, and the fourth surface is recessed towards the third surface. The third opening corresponds to the third surface, and the fourth opening corresponds to the fourth surface.

10. An electronic device, characterized in that, It includes a selectively permeable membrane, an odor sensor, and a pumping mechanism as described in any one of claims 1 to 9, wherein the selectively permeable membrane is disposed on the odor sensor and is disposed corresponding to the detection opening.

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