Piezoelectric gas control device

Abstract

The utility model belongs to liquid variable capacity type mechanical technical field, concretely relates to a piezoelectric gas control device, and the piezoelectric gas control device includes: mounting bracket, and the first air pump mechanism and the second air pump mechanism are arranged on it and are stacked, the first air pump mechanism and the second air pump mechanism all include: end cover, one-way diaphragm subassembly and vibration subassembly, wherein the end cover is connected with the end of mounting bracket to compress the vibration subassembly, and forms the chamber between end cover and vibration subassembly, the piezoelectric gas control device is stacked with the first air pump mechanism and the second air pump mechanism to reduce the space of device overall occupation, simultaneously, through the support sheet with window and the guide film and the first guide hole group with the misplacement hole three stacked, the one-way bending of guide film has been realized.

Description

Technical Field

[0001] This utility model belongs to the field of liquid variable displacement machinery technology, specifically relating to liquid variable displacement machinery with plate-shaped flexible parts, and particularly to a piezoelectric gas control device. Background Technology

[0002] Pumps installed in small spaces are generally micro pumps. Micro pumps are small in size and have a small driving force. In applications that require high negative pressure, one micro pump is not enough to provide the negative pressure. In this case, two micro pumps need to be connected in series to increase the negative pressure.

[0003] However, connecting two micropumps in series increases the overall volume, which can limit installation in limited spaces.

[0004] Therefore, a new piezoelectric gas control device is needed to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Utility Model Content

[0006] This disclosure provides at least one piezoelectric gas control device, comprising: a mounting frame on which a first air pump mechanism and a second air pump mechanism are stacked; both the first and second air pump mechanisms include: an end cap, a one-way diaphragm assembly, and a vibration assembly; wherein the end cap is connected to the end of the mounting frame to press the vibration assembly, and a chamber is formed between the end cap and the vibration assembly; the chamber is connected to an inlet pipe and an outlet pipe, the outlet pipe of one chamber is connected to the inlet pipe of the other chamber, and the one-way diaphragm assembly is disposed in both the inlet pipe of one chamber and the outlet pipe of the other chamber; the vibration assembly is adapted to cause the one-way diaphragm assembly to bend by vibration to open the air passage.

[0007] In one optional embodiment, the unidirectional diaphragm assembly includes: a first guide plate, a second guide plate, and a guide diaphragm; the guide diaphragm is located between the first and second guide plates and is in contact with the first guide plate; the first guide plate has a first group of guide holes; the second guide plate has a second group of guide holes; the guide diaphragm has a third group of guide holes; each third guide hole in the third group of guide holes is offset from each first guide hole in the first group of guide holes; wherein, the vibration assembly is adapted to cause the guide diaphragm to bend by vibration to open the airway.

[0008] In one alternative embodiment, the unidirectional diaphragm assembly further includes a support sheet; wherein the support sheet is located between the second guide sheet and the guide diaphragm; the support sheet is adapted to press the guide diaphragm onto the first guide sheet.

[0009] In one alternative embodiment, the support sheet has a window for avoiding the third flow guide hole group; wherein the vibration assembly is adapted to cause the third flow guide hole group of the flow guide diaphragm to bend by vibration.

[0010] In one optional embodiment, the first guide plate is provided with a process annular groove group; wherein each process annular groove in the process annular groove group coincides with each third guide hole in the third guide hole group.

[0011] In one alternative implementation, the window includes a first sub-window and a second sub-window; the first sub-window and the second sub-window are symmetrically arranged, and a pressing area is left between them.

[0012] In one alternative embodiment, the vibration assembly includes: a stacked oscillator, a flexible circuit board, and a piezoelectric ceramic sheet; wherein the end cap is connected to the end of the mounting bracket to press against the periphery of the flexible circuit board.

[0013] In one alternative implementation, the oscillator is located inside the cavity; the first guide vane is positioned toward the oscillator.

[0014] In one alternative embodiment, the mounting bracket is annular and has several heat dissipation holes on its sidewalls.

[0015] In one alternative embodiment, the center of the tableting area is circular or elliptical.

[0016] The beneficial effects of this utility model are that the piezoelectric gas control device reduces the overall space occupied by the device by stacking the first air pump mechanism and the second air pump mechanism; at the same time, the unidirectional bending of the flow guiding diaphragm is achieved by stacking the support plate with the window, the flow guiding diaphragm with the misaligned hole and the first flow guiding hole group.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a piezoelectric gas control device provided in an embodiment of the present disclosure;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of a piezoelectric gas control device provided in an embodiment of the present disclosure;

[0022] Figure 3 This is an exploded view of a unidirectional diaphragm assembly provided in an embodiment of the present disclosure;

[0023] Figure 4 A schematic diagram of the cooperation structure between a flow guiding diaphragm and a window provided in an embodiment of this disclosure;

[0024] Figure 5 This is a schematic diagram of the structure of a process annular groove assembly provided in an embodiment of the present disclosure;

[0025] Figure 6 A schematic diagram of the structure of a window provided in an embodiment of this disclosure;

[0026] Figure 7 This is a schematic diagram of the structure of a vibration assembly provided in an embodiment of this disclosure.

[0027] In the picture:

[0028] Mounting bracket 1, heat dissipation hole 11;

[0029] First air pump mechanism 2;

[0030] End cap 21;

[0031] Unidirectional diaphragm assembly 22, first guide plate 221, first guide hole group 221a, process annular groove group 221b, second guide plate 222, second guide hole group 222a, guide diaphragm 223, third guide hole group 223a, support plate 224, window 224a, first sub-window 224b, second sub-window 224c, tableting area 224d;

[0032] Vibration assembly 23, oscillator 231, flexible circuit board 232, piezoelectric ceramic sheet 233;

[0033] Chamber 24, inlet pipe 241, outlet pipe 242;

[0034] Second air pump mechanism 3. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.

[0037] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0038] like Figure 1 As shown, at least one embodiment provides a piezoelectric gas control device, including: a mounting frame 1 on which a first air pump mechanism 2 and a second air pump mechanism 3 are stacked; the stacking of the first air pump mechanism 2 and the second air pump mechanism 3 reduces the overall space occupied by the device.

[0039] like Figure 2 As shown, in some embodiments, both the first air pump mechanism 2 and the second air pump mechanism 3 include: an end cap 21, a one-way diaphragm assembly 22 and a vibration assembly 23; wherein the vibration assembly 23 is disposed at the end of the mounting frame 1, the end cap 21 is connected to the end of the mounting frame 1 to press the vibration assembly 23, and a cavity 24 is formed between the end cap 21 and the vibration assembly 23.

[0040] like Figure 2 As shown, in some embodiments, chamber 24 is connected to an air inlet pipe 241 and an air outlet pipe 242; wherein the air outlet pipe 242 of one chamber 24 is connected to the air inlet pipe 241 of another chamber 24.

[0041] Specifically, the first air pump mechanism 2 is located above, and the second air pump mechanism 3 is located below. The air outlet pipe 242 of the second air pump mechanism 3 is connected to the air inlet pipe 241 of the first air pump mechanism 2, thereby forming a flow channel.

[0042] like Figure 2 As shown, in some embodiments, a one-way diaphragm assembly 22 is provided in both the air inlet pipe 241 of one chamber 24 and the air outlet pipe 242 of the other chamber 24.

[0043] Specifically, a one-way diaphragm assembly 22 is provided in the air inlet pipe 241 of the second air pump mechanism 3 and the air outlet pipe 242 of the first air pump mechanism 2.

[0044] In this embodiment, the vibration component 23 causes the unidirectional diaphragm component 22 to bend by vibration, thereby opening the flow channel of the unidirectional diaphragm component 22.

[0045] like Figure 3 As shown, in some embodiments, the unidirectional diaphragm assembly 22 includes: a first guide plate 221, a second guide plate 222 and a guide diaphragm 223; the guide diaphragm 223 is located between the first guide plate 221 and the second guide plate 222 and is attached to the first guide plate 221.

[0046] Specifically, the first guide plate 221 has a first guide hole group 221a; the second guide plate 222 has a second guide hole group 222a; the guide diaphragm 223 has a third guide hole group 223a; and each third guide hole in the third guide hole group 223a is offset from each first guide hole in the first guide hole group 221a.

[0047] In this embodiment, when the vibration component 23 causes the flow guide diaphragm 223 to bend through vibration (the bending direction of the flow guide diaphragm 223 is away from the first flow guide plate 221), a gap is left between the flow guide diaphragm 223 and the first flow guide plate 221, that is, the airflow enters from the first flow guide hole group 221a and exits from the third flow guide hole group 223a, thereby realizing the flow; when the flow guide diaphragm 223 is attached to the first flow guide plate 221, due to the misalignment of the third flow guide hole and the first flow guide hole, the first flow guide plate 221 and the flow guide diaphragm 223 jointly cut off the flow channel.

[0048] like Figure 4 As shown, in some embodiments, the unidirectional diaphragm assembly 22 further includes a support sheet 224; wherein the support sheet 224 is located between the second guide sheet 222 and the guide diaphragm 223; the support sheet 224 is adapted to press the guide diaphragm 223 onto the first guide sheet 221.

[0049] like Figure 3 , Figure 4 As shown, in some embodiments, the support sheet 224 has a window 224a for avoiding the third flow guide hole group 223a; wherein, the vibration component 23 is adapted to drive the third flow guide hole group 223a of the flow guide diaphragm 223 to bend by vibration.

[0050] In this embodiment, when the flow guiding diaphragm 223 bends, since there is only a gap at the window 224a of the support sheet 224, the flow guiding diaphragm 223 can only bend into the window 224a.

[0051] like Figure 5 As shown, in some embodiments, the first guide plate 221 has a process annular groove group 221b; wherein each process annular groove in the process annular groove group 221b coincides with each third guide hole in the third guide hole group 223a.

[0052] In this embodiment, the process annular groove group 221b is used as follows: when it is necessary to open holes on the flow guiding diaphragm 223, the flow guiding diaphragm 223 is first placed on the first flow guiding plate 221, and then holes are drilled at the position of the process annular groove group 221b by laser drilling to form the third flow guiding hole group 223a, so that the third flow guiding hole group 223a is precisely misaligned with the first flow guiding hole group 221a.

[0053] like Figure 6 As shown, in some embodiments, window 224a includes: a first sub-window 224b and a second sub-window 224c; the first sub-window 224b and the second sub-window 224c are symmetrically arranged, and a tablet pressing area 224d is left between them.

[0054] In this embodiment, window 224a is divided into a first sub-window 224b and a second sub-window 224c. That is, the first guide hole group 221a, the process annular groove group 221b, the second guide hole group 222a, and the third guide hole group 223a are also symmetrically divided into two locations, corresponding to the positions of the first sub-window 224b and the second sub-window 224c.

[0055] In some embodiments, the function of the compression region 224d is to increase the pressing effect of the support sheet 224 on the flow guiding membrane 223.

[0056] In some embodiments, the center of the tableting region 224d is circular or elliptical.

[0057] In some embodiments, the mounting bracket 1 is annular and has a plurality of heat dissipation holes 11 on its sidewalls, thereby helping the vibration assembly 23 to dissipate heat.

[0058] In some embodiments, the second guide plate 222, the support plate 224, the guide diaphragm 223 and the first guide plate 221 of the unidirectional diaphragm assembly 22 are stacked; optionally, the stacked unidirectional diaphragm assembly 22 can be fixed in the installation position of the air tube by means of glue, welding or other methods.

[0059] like Figure 7 As shown, in some embodiments, the vibration assembly 23 includes: a stacked oscillator 231, a flexible circuit board 232, and a piezoelectric ceramic sheet 233; wherein the end cap 21 is connected to the end of the mounting bracket 1 to press against the periphery of the flexible circuit board 232.

[0060] In some embodiments, optionally, the stacked oscillator 231, flexible circuit board 232 and piezoelectric ceramic sheet 233 are connected by adhesive.

[0061] In some embodiments, the oscillator 231 is located inside the chamber 24; the first guide vane 221 is disposed toward the oscillator 231.

[0062] As another alternative embodiment, the vibration component 23 may employ a vibration device from the prior art.

[0063] In summary, this piezoelectric gas control device reduces the overall space occupied by stacking the first air pump mechanism 2 and the second air pump mechanism 3; at the same time, by stacking the support plate 224 with window 224a, the flow guiding diaphragm 223 with misaligned holes, and the first flow guiding hole group 221a, the unidirectional bending of the flow guiding diaphragm 223 is achieved.

[0064] In this document, when it is said that the first component is located on the second component, this can mean that the first component can be directly formed on the second component, or that the third component can be inserted between the first component and the second component.

[0065] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0066] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0067] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0068] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0069] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0070] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0071] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0072] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0073] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A piezoelectric gas control device, characterized in that, include: Mounting frame (1), on which a first air pump mechanism (2) and a second air pump mechanism (3) are stacked; Both the first air pump mechanism (2) and the second air pump mechanism (3) include: an end cap (21), a one-way diaphragm assembly (22), and a vibration assembly (23); wherein The vibration assembly (23) is disposed on the end of the mounting bracket (1); The end cap (21) is connected to the end of the mounting bracket (1) to press the vibration assembly (23) together, and a cavity (24) is formed between the end cap (21) and the vibration assembly (23). The chamber (24) is connected to an air inlet pipe (241) and an air outlet pipe (242). The air outlet pipe (242) of one chamber (24) is connected to the air inlet pipe (241) of another chamber (24). The unidirectional diaphragm assembly (22) is provided in both the air inlet pipe (241) of one chamber (24) and the air outlet pipe (242) of the other chamber (24). The vibration component (23) is adapted to cause the unidirectional diaphragm component (22) to bend by vibration in order to open the airway.

2. The piezoelectric gas control device as described in claim 1, characterized in that, The unidirectional diaphragm assembly (22) includes: a first guide plate (221), a second guide plate (222), and a guide diaphragm (223); The flow guiding diaphragm (223) is located between the first flow guiding plate (221) and the second flow guiding plate (222), and is in contact with the first flow guiding plate (221); The first guide vane (221) has a first guide hole group (221a). The second guide vane (222) has a second guide hole group (222a). The flow guiding diaphragm (223) is provided with a third flow guiding hole group (223a); The third guide holes in the third guide hole group (223a) are offset from the first guide holes in the first guide hole group (221a); The vibration component (23) is adapted to cause the flow guide diaphragm (223) to bend by vibration in order to open the airway.

3. The piezoelectric gas control device as described in claim 2, characterized in that, The unidirectional diaphragm assembly (22) further includes: a support sheet (224); wherein The support sheet (224) is located between the second guide sheet (222) and the guide diaphragm (223); The support sheet (224) is adapted to press the flow guiding membrane (223) onto the first flow guiding sheet (221).

4. The piezoelectric gas control device as described in claim 3, characterized in that, The support plate (224) has a window (224a) for avoiding the third guide hole group (223a). The vibration component (23) is adapted to bend the third flow guide hole group (223a) of the flow guide diaphragm (223) by vibration.

5. The piezoelectric gas control device as described in claim 2, characterized in that, The first guide vane (221) has a process annular groove group (221b); wherein Each process annular groove in the process annular groove group (221b) coincides with each third guide hole in the third guide hole group (223a).

6. The piezoelectric gas control device as described in claim 4, characterized in that, The window (224a) includes: a first sub-window (224b) and a second sub-window (224c); The first sub-window (224b) and the second sub-window (224c) are symmetrically arranged, and a tablet compression area (224d) is left between them.

7. The piezoelectric gas control device as described in claim 2, characterized in that, The vibration assembly (23) includes: a stacked oscillator (231), a flexible circuit board (232), and a piezoelectric ceramic sheet (233); wherein The end cap (21) is connected to the end of the mounting bracket (1) to press against the periphery of the flexible circuit board (232).

8. The piezoelectric gas control device as described in claim 7, characterized in that, The oscillator (231) is located inside the chamber (24); The first guide vane (221) is positioned toward the oscillator (231).

9. The piezoelectric gas control device as described in claim 1, characterized in that, The mounting bracket (1) is annular and has several heat dissipation holes (11) on its side wall.

10. The piezoelectric gas control device as described in claim 6, characterized in that, The center of the tableting area (224d) is circular or elliptical.

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