Pulse airflow generator

Abstract

The invention belongs to the technical field of automobile seat massage, and particularly relates to a pulse airflow generator. The pulse airflow generator comprises a partition plate provided with an air inlet one-way valve and an air outlet one-way valve; the two sides of the partition plate are covered with the cover plate and the air blowing film respectively, the areas, where the air inlet one-way valve and the air outlet one-way valve are arranged, of the partition plate are covered with the cover plate and the air blowing film, an air inlet cavity and an air blowing cavity are formed, and the air outlet one-way valve is covered with an air outlet pipe inserted into the cover plate. The air inlet cavity is communicated with an air inlet pipe; and the air-blowing driving assembly is in transmission connection with the air-blowing film, so that the air-blowing film circulates between expansion and contraction. According to the pulse airflow generator, when the air-blowing driving assembly enables the air-blowing film to circulate between expansion and contraction, the air-blowing cavity can intermittently blow air to the air outlet pipe, and therefore airflow with fluctuating flow can be directly generated.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive seat massage, and particularly relates to a pulsed air flow generator. Background Art

[0002] In a conventional structure for realizing massage in an automotive seat by means of air bags as shown in the publication (announcement) number CN216139884U, an air pump is connected to an ECU, and the ECU is further connected to the air bags. After the air pump is started, the ECU controls the inflation and deflation of each air bag, causing each air bag to expand and contract. During the expansion process of the air bag, the air bag will exert pressure on the passenger. The air pump, as shown in the publication (announcement) number CN209025810U, is an air pump that stably outputs gas. Therefore, when it is necessary to cause the volume of the gas in the air bag to fluctuate upward during the expansion process of the air bag, currently it can only be indirectly achieved by the ECU switching the inflation air path or by starting and stopping the air pump, but this will greatly increase the number of working times of the solenoid valve in the ECU or greatly increase the number of starting and stopping times of the air pump, which has an impact on the service life of the ECU and the air pump.

[0003] In order to directly generate an air flow with a fluctuating flow rate when the air pump pumps air, the present application proposes a pulsed air flow generator. Summary of the Invention

[0004] The object of the present invention is to provide a pulsed air flow generator to solve the technical problem that the air pump in an automotive seat cannot directly generate an air flow with a fluctuating flow rate.

[0005] To solve the above technical problem, the present invention provides a pulsed air flow generator, including: a partition plate provided with an intake check valve and an outlet check valve thereon; both sides of the partition plate are respectively covered by a cover plate and a drum air film, and both the cover plate and the drum air film cover the area on the partition plate where the intake check valve and the outlet check valve are provided, forming an intake cavity and a drum air cavity, and an outlet pipe inserted into the cover plate covers the outlet check valve inside; the intake cavity is communicated with an intake pipe; a drum air driving assembly, which is in transmission connection with the drum air film to cause the drum air film to cycle between expansion and contraction.

[0006] Further, the partition plate includes: an orifice plate having an intake hole and an outlet hole thereon; the intake check valve includes: an intake spring piece provided on the side of the orifice plate facing the drum air film and covering the intake hole; the outlet check valve includes: a gasket having a gasket through hole adapted to the outlet pipe and a transition through hole adapted to the intake hole; an outlet spring piece connected to the gasket and covering the outlet hole when the outlet pipe abuts against the gasket and covers the gasket through hole inside.

[0007] Further, there are a plurality of intake holes, and they are arranged around the intake spring piece insertion hole. When the intake spring piece is inserted into the intake spring piece insertion hole, it covers the surrounding intake holes.

[0008] Further, the air outlet elastic piece is arranged in the gasket through hole and connected to the inner wall of the gasket through hole.

[0009] Further, the air inflation driving assembly includes: a motor, which is eccentrically connected to a transmission plate, and the transmission plate is connected to the air inflation film, so that when the motor drives the transmission plate to rotate, the transmission plate drives the air inflation film to cycle between expansion and contraction.

[0010] Further, a plurality of groups of air inlet one-way valves and air outlet one-way valves are arranged on the partition plate, and each air outlet one-way valve is respectively covered inside by a corresponding air outlet pipe inserted in the cover plate, and each group of air inlet one-way valves and air outlet one-way valves are respectively covered inside by a corresponding air inflation film; a transmission rod is arranged at the center of the transmission plate, and the transmission rod is eccentrically connected to the motor; the transmission plate is connected to each air inflation film.

[0011] Further, a convex portion of the air inflation film is arranged at the bottom of the air inflation film; a plurality of insertion holes are formed in the transmission plate, and each insertion hole is located on the same circular track centered on the transmission rod; the convex portion of the air inflation film is inserted into the corresponding insertion hole.

[0012] Further, a pair of the motors are connected back to back so that a plurality of air outlet pipes are provided at both ends.

[0013] Further, the air inlet pipe is arranged through the partition plate or through the cover plate to communicate with the air inlet cavity.

[0014] The beneficial effect of the present invention is that the partition plate of the pulse air flow generator provided by the present invention is provided with an air inlet one-way valve and an air outlet one-way valve, and both sides of the partition plate are respectively covered by a cover plate and an air inflation film. The cover plate and the air inflation film both cover the area where the air inlet one-way valve and the air outlet one-way valve are arranged on the partition plate to form an air inlet cavity and an air inflation cavity. The air inlet cavity is communicated with the air inlet pipe, and the air outlet pipe inserted in the cover plate covers the air outlet one-way valve inside. When the air inflation driving assembly drives the air inflation film to expand, the gas enters the air inlet cavity through the air inlet pipe and then enters the air inflation cavity through the air inlet one-way valve. When the air inflation driving assembly drives the air inflation film to contract, the gas in the air inflation cavity directly enters the air outlet pipe after passing through the air outlet one-way valve. In this way, when the air inflation driving assembly makes the air inflation film cycle between expansion and contraction, the air inflation cavity can intermittently inflate the air outlet pipe. Therefore, this pulse air flow generator can directly generate an air flow with a fluctuating flow rate. Description of the Drawings

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the specific embodiments or the prior description. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is an exploded view of the pulse gas flow generator of the present invention;

[0017] Figure 2 is a sectional view of the pulse gas flow generator of the present invention Figure 1 ;

[0018] Figure 3 is a schematic diagram of the partition plate, intake check valve and exhaust check valve of the pulse gas flow generator of the present invention;

[0019] Figure 4 is a sectional view of the pulse gas flow generator of the present invention Figure 2 ;

[0020] Figure 5 is a schematic diagram when the motors of the pulse gas flow generator of the present invention are connected back to back;

[0021] In the figure:

[0022] partition plate 100, intake check valve 110, intake spring piece 111, exhaust check valve 120, gasket 121, gasket through hole 122, transition through hole 123, exhaust spring piece 124, orifice plate 130, intake hole 131, exhaust hole 132, intake spring piece jack 133, cover plate 200, air-blowing film 300, air-blowing film convex part 310, intake cavity 400, air-blowing cavity 500, exhaust pipe 600, intake pipe 700, air-blowing drive assembly 800, motor 810, drive plate 820, jack 821, drive rod 830. Specific embodiments

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment

[0025] As Figure 1 shown, the present invention provides a pulse gas flow generator, including: a partition plate 100, on which an intake check valve 110 and an exhaust check valve 120 are provided; both sides of the partition plate 100 are covered by a cover plate 200 and an air-blowing film 300, and both the cover plate 200 and the air-blowing film 300 cover the area on the partition plate 100 where the intake check valve 110 and the exhaust check valve 120 are provided. In combination with Figure 2, forming an air inlet cavity 400 and an air inflation cavity 500, and the air outlet pipe 600 inserted in the cover plate 200 covers the air outlet one-way valve 120 inside; the air inlet cavity 400 is connected to the air inlet pipe 700; the air inflation drive assembly 800 is transmission-connected to the air inflation membrane 300 so that the air inflation membrane 300 cycles between expansion and contraction.

[0026] The baffle plate 100 of the pulse airflow generator provided by the present invention is provided with an inlet check valve 110 and an outlet check valve 120, and the two sides of the baffle plate 100 are covered by the cover plate 200 and the inflation membrane 300 respectively, and the cover plate 200 and the inflation membrane 300 both cover the area where the inlet check valve 110 and the outlet check valve 120 are provided on the baffle plate 100, so as to form an inlet cavity 400 and an inflation cavity 500, and the inlet cavity 400 is connected with the inlet pipe 700, and the outlet pipe 600 inserted in the cover plate 200 covers the outlet check valve 120 inside, and when the inflation drive assembly 80 0 drives the inflation membrane 300 to expand, the gas enters the inlet chamber 400 through the inlet pipe 700, and then enters the inflation chamber 500 through the inlet check valve 110. When the inflation drive assembly 800 drives the inflation membrane 300 to contract, the gas in the inflation chamber 500 directly enters the outlet pipe 600 after passing through the outlet check valve 120. In this way, when the inflation drive assembly 800 causes the inflation membrane 300 to cycle between expansion and contraction, the inflation chamber 500 can intermittently inflate air into the outlet pipe 600. Therefore, the pulse airflow generator can directly generate an airflow with flow fluctuations.

[0027] like Figure 3 As shown, the partition 100 may include: a perforated plate 130, on which an air inlet hole 131 and an air outlet hole 132 are formed; the air inlet check valve 110 may include: an air inlet spring 111, which is arranged on the side of the perforated plate 130 facing the inflation membrane 300 and covers the air inlet hole 131; the air outlet check valve 120 may include: a gasket 121, on which a gasket through hole 122 adapted to the air outlet pipe 600 is formed, so that the pipe mouth of the air outlet pipe 600 presses the surrounding of the gasket through hole 122, the air outlet pipe 600 can cover the gasket through hole 122 in the pipe, and a transition through hole 123 adapted to the air inlet hole 131 is formed; an air outlet spring 124, which is connected to the gasket 121, and when the air outlet pipe 600 abuts against the gasket 121 and covers the air outlet hole 132 inside.

[0028] The principle of unidirectional intake and exhaust of this pulsed air flow generator is as follows. When the air blowing drive assembly 800 drives the air blowing membrane 300 to expand, the gas in the intake cavity 400 can only press the exhaust elastic piece 124 against the exhaust hole 132. Therefore, it can only pass through the transition through hole 123 and the intake hole 131 to push open the intake elastic piece 111 and enter the air blowing cavity 500. When the air blowing drive assembly 800 drives the air blowing membrane 300 to contract, the gas in the air blowing cavity 500 can only press the intake elastic piece 111 against the intake hole 131. Therefore, it can only pass through the exhaust hole 132 to push open the exhaust elastic piece 124 and enter the exhaust pipe 600 through the gasket through hole 122.

[0029] As Figure 3 shown, there can be several intake holes 131, so that the gas can enter the air blowing cavity 500 from the intake cavity 400 more smoothly. And the intake holes 131 are arranged around the intake elastic piece insertion hole 133. When the intake elastic piece 111 is inserted into the intake elastic piece insertion hole 133, it can just cover each of the circumferentially arranged intake holes 131.

[0030] As Figure 3 shown, the exhaust elastic piece 124 can be arranged in the gasket through hole 122 and connected to the inner wall of the gasket through hole 122. When the exhaust elastic piece 124 is connected to the inner wall of the gasket through hole 122, it can be in a downward pressing state, so that the gas in the intake cavity 400 can only press the exhaust elastic piece 124 against the exhaust hole 132 and cannot pass through.

[0031] As Figure 2 and Figure 4 shown, the air blowing drive assembly 800 can include: a motor 810, which is eccentrically connected to a transmission plate 820. The transmission plate 820 is connected to the air blowing membrane 300, so that when the motor 810 drives the transmission plate 820 to rotate, the transmission plate 820 drives the air blowing membrane 300 to cycle between expansion and contraction.

[0032] As Figure 1 shown, several groups of intake one-way valves 110 and exhaust one-way valves 120 can be provided on the partition plate 100. And each exhaust one-way valve 120 is respectively covered inside by the corresponding exhaust pipe 600 inserted in the cover plate 200. Each group of intake one-way valves 110 and exhaust one-way valves 120 are respectively covered inside by the corresponding air blowing membrane 300; Combining Figure 4 , a transmission rod 830 can be provided at the center of the transmission plate 820. The transmission rod 830 is eccentrically connected to the motor 810; the transmission plate 820 is connected to each air blowing membrane 300. In this way, one motor 810 can drive multiple air blowing membranes 300 at the same time and output multi-channel airflow with fluctuating flow rates.

[0033] The connection between the transmission plate 820 and each air blowing membrane 300 can be as follows.

[0034] As Figure 1and Figure 2 As shown, a bulge 310 is provided at the bottom of the air-blowing film 300; as Figure 4 shown, a plurality of jacks 821 are formed in the transmission plate 820, and each jack 821 is located on the same circular track centered on the transmission rod 830; in combination with Figure 2 , the bulge 310 of the air-blowing film is inserted into the corresponding jack 821.

[0035] As Figure 5 shown, a pair of the motors 810 can be connected back to back so that a plurality of air outlet pipes 600 are provided at both ends.

[0036] The air inlet pipe 700 is arranged in the partition plate 100 or in the cover plate 200 to communicate with the air inlet cavity 400. As Figure 2 shown, in at least one embodiment, the air inlet pipe 700 is arranged in the partition plate 100.

[0037] In summary, an air inlet check valve 110 and an air outlet check valve 120 are provided on the partition plate 100 of the pulse air flow generator provided by the present invention. The two sides of the partition plate 100 are respectively covered by the cover plate 200 and the air-blowing film 300. Both the cover plate 200 and the air-blowing film 300 cover the areas where the air inlet check valve 110 and the air outlet check valve 120 are arranged on the partition plate 100 to form an air inlet cavity 400 and an air-blowing cavity 500. The air inlet cavity 400 is communicated with the air inlet pipe 700, and the air outlet pipe 600 inserted in the cover plate 200 covers the air outlet check valve 120 inside. When the air-blowing driving assembly 800 drives the air-blowing film 300 to expand, gas enters the air inlet cavity 400 through the air inlet pipe 700 and then enters the air-blowing cavity 500 through the air inlet check valve 110. When the air-blowing driving assembly 800 drives the air-blowing film 300 to contract, the gas in the air-blowing cavity 500 directly enters the air outlet pipe 600 after passing through the air outlet check valve 120. In this way, when the air-blowing driving assembly 800 makes the air-blowing film 300 cycle between expansion and contraction, the air-blowing cavity 500 can intermittently blow air into the air outlet pipe 600. Therefore, this pulse air flow generator can directly generate an air flow with a fluctuating flow rate.

[0038] In the embodiments provided in the present application, it should be understood that the disclosed systems and devices can be implemented in other ways. The above-described embodiments are merely illustrative. For example, the division of the mechanism is only a logical function division, and there can be other division methods in actual implementation. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0040] Based on the above enlightenment of the ideal embodiment of the present invention, through the above description, those skilled in the art can make various changes and modifications completely within the scope not deviating from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pulse air flow generator, characterized in that, Comprising: A partition plate (100) provided with an intake check valve (110) and an outlet check valve (120); Both sides of the partition plate (100) are respectively covered by a cover plate (200) and an air-blowing film (300). The cover plate (200) and the air-blowing film (300) both cover the area where the intake check valve (110) and the outlet check valve (120) are arranged on the partition plate (100) to form an intake cavity (400) and an air-blowing cavity (500), and an outlet pipe (600) inserted in the cover plate (200) covers the outlet check valve (120) inside; The intake cavity (400) is communicated with an intake pipe (700); An air-blowing driving assembly (800) which is in transmission connection with the air-blowing film (300) to make the air-blowing film (300) cycle between expansion and contraction.

2. The pulse air flow generator according to claim 1, wherein The partition plate (100) comprises: An orifice plate (130) provided with an intake hole (131) and an outlet hole (132); The intake check valve (110) comprises: An intake elastic sheet (111) which is arranged on the side of the orifice plate (130) facing the air-blowing film (300) and covers the intake hole (131); The outlet check valve (120) comprises: A gasket (121) provided with a gasket through-hole (122) adapted to the outlet pipe (600) and a transition through-hole (123) adapted to the intake hole (131); An outlet elastic sheet (124) which is connected with the gasket (121) and covers the outlet hole (132) when the outlet pipe (600) abuts against the gasket (121) and covers the gasket through-hole (122) inside.

3. The pulse air flow generator according to claim 2, wherein There are several intake holes (131) which are arranged around an intake elastic sheet insertion hole (133). When the intake elastic sheet (111) is inserted into the intake elastic sheet insertion hole (133), the intake holes (131) arranged around are covered.

4. The pulse air flow generator according to claim 2, wherein The outlet elastic sheet (124) is arranged in the gasket through-hole (122) and is connected with the inner wall of the gasket through-hole (122).

5. The pulse air flow generator according to claim 2, wherein The air-blowing driving assembly (800) comprises: A motor (810) which is eccentrically connected with a transmission plate (820). The transmission plate (820) is connected with the air-blowing film (300) so that when the motor (810) drives the transmission plate (820) to rotate, the transmission plate (820) drives the air-blowing film (300) to cycle between expansion and contraction.

6. The pulse air flow generator according to claim 5, wherein Several groups of intake check valves (110) and outlet check valves (120) are arranged on the partition plate (100), and each outlet check valve (120) is respectively covered by a corresponding outlet pipe (600) inserted in the cover plate (200) inside, and each group of intake check valves (110) and outlet check valves (120) are respectively covered by a corresponding air-blowing film (300) inside; A transmission rod (830) is provided at the center of the transmission plate (820), and the transmission rod (830) is eccentrically connected to the motor (810); The transmission plate (820) is connected to each air-blowing film (300).

7. The pulse air flow generator according to claim 6, wherein An air-blowing film convex portion (310) is provided at the bottom of the air-blowing film (300); A plurality of jacks (821) are formed in the transmission plate (820), and each jack (821) is located on the same circular orbit centered on the transmission rod (830); The air-blowing film convex portion (310) is inserted into the corresponding jack (821).

8. The pulse air flow generator according to claim 7, wherein A pair of the motors (810) are connected back to back so that a plurality of air outlet pipes (600) are provided at both ends.

9. The pulse air flow generator according to claim 1, wherein The air inlet pipe (700) is arranged to penetrate through the partition plate (100) or through the cover plate (200) to communicate with the air inlet cavity (400).

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