Valve and gas control device

Abstract

The utility model relates to the technical field of electrically-driven pumps, in particular to a valve and a gas control device, which comprise a bottom plate with a bottom plate hole part, a cover plate with a gas outlet hole part, a valve plate with a valve plate hole part and a support plate with a gas release channel, the bottom plate, the support plate and the cover plate are sequentially stacked, a cavity is arranged in the center of the support plate, and the gas release channel is arranged in the cavity. A valve chamber is formed, the valve plate is arranged in the valve chamber, the air release channel is formed in the periphery of the supporting plate and communicated with the valve chamber, the bottom plate hole part, the cover plate air outlet hole part and the valve plate hole part are oppositely arranged, the bottom plate hole part is annular, and a valve plate hole part blocking plate opposite to the valve plate hole part is formed in the middle area of the bottom plate hole part. According to the valve and the gas control device, gas leakage is conducted through the lateral gap, the gas leakage area is greatly increased, the gas leakage speed is increased, the valve and the gas control device are more suitable for wrist type and arm type sphygmomanometers and massage instrument products so as to meet better user experience, meanwhile, the failure risk caused by blockage due to entering of impurities can be reduced, and therefore the reliability of the products is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pump with electric drive, especially to a valve and gas control device. BACKGROUND

[0002] The advent of wrist type, arm type sphygmomanometers and other intelligent wearable devices greatly facilitates people's life, and thus is favored by the market, and the miniature air pump and air release valve as the core components thereof also attract extensive attention in the industry. Improving the performance of the miniature air pump and air release valve becomes a key factor for improving the performance of the product. The air release valve applied in the intelligent wearable device is mostly of diaphragm structure in order to realize miniaturization in structure, and the diaphragm is deformed due to the flow of fluid, thereby dividing the internal space of the housing into an air inlet side and an air outlet side.

[0003] According to the search, the patent with the publication number CN117280149A discloses a valve, fluid control device, pressurizing device and sphygmomanometer, which communicates the first wall side space and the second wall side space through a communication path, can inhibit the change of the flow path cross-sectional area and the flow velocity of the first flow path to inhibit the vibration of the membrane. However, it is found in actual use that when the pump stops power supply and reversely releases air, the gas can only be discharged through the hole 790, and due to the limited flow area, the air release speed is slow, which causes poor user experience for wrist type, arm type sphygmomanometers and the massage industry, and at the same time, the structure of single-hole air release greatly increases the risk of blockage once impurities enter, and the reliability is low; when the pump is powered on and works in the forward air outlet mode, the gas needs to pass through two bends after pushing away the valve piece 80 to flow out from the hole 800, which increases the resistance along the path and the local resistance, and causes the attenuation of the output gas pressure and flow of the air pump. UTILITY MODEL CONTENTS

[0004] In order to solve the problem of slow air release speed and easy blockage due to the limited flow area of the existing single-hole air release, the utility model provides a valve and gas control device, which realizes the miniaturization and thinning of the product, blocks and releases air from the lateral gap through the opposing air inlet, air outlet and plugging plate, has fast air release speed, reduces the risk of blockage failure, and improves the reliability of the product.

[0005] The utility model provides a valve and gas control device, including the bottom plate with bottom plate hole part, the cover plate with gas outlet hole part, the valve piece with valve piece hole part and the support plate with the air release groove, the bottom plate, support plate and cover plate are sequentially laminated and set up, the central part of support plate is the cavity, forms the valve chamber, the valve piece is placed in the valve chamber, the air release groove sets up in the outer peripheral part of support plate, the air release groove is open with the valve chamber, the bottom plate hole part, cover plate gas outlet hole part and valve piece hole part are opposite. The air release groove is opposite to the conventional air release hole, and the air release area is greatly increased, and the air release speed is promoted, can satisfy better user experience, can also reduce the risk of failure of impurity into, improves the reliability of product.

[0006] Further, the bottom plate hole part is annular, and a valve piece hole part sealing plate opposite to the valve piece hole part is formed in a middle region of the bottom plate hole part. In the air release process, the valve piece is attached to the bottom plate due to the thrust of the reverse airflow, at this time, the periphery of the valve piece hole part is tightly attached to the valve piece hole part sealing plate, thereby achieving the effect of sealing the valve piece hole part.

[0007] Further, the diameter of the valve piece is greater than the outer diameter of the bottom plate hole part, and the inner diameter of the bottom plate hole part is greater than the diameter of the valve piece hole part. The valve piece effectively seals the bottom plate hole part.

[0008] Further, the bottom plate hole part is composed of a plurality of air inlet holes, and the plurality of air inlet holes are evenly distributed in a circumferential direction with the center of the valve piece as a center. In the air outlet process, the gas passing through the bottom plate hole part can well attach the opposite regions of the valve piece and the cover plate to achieve the effect of sealing the air release groove or sealing the valve piece.

[0009] Further, the air inlet hole is a fan-shaped hole or a curved waist-shaped hole or a curved square hole, and the valve piece is circular. The circular valve piece cooperates with the curved strip-shaped air inlet hole to achieve better sealing or air inlet effect.

[0010] Further, the outer peripheral part of the support plate is provided with a plurality of air release grooves, and the plurality of air release grooves are evenly distributed in a circumferential direction with the center of the valve piece as a center. The air release groove can be single or multiple, and all the side surfaces in the entire height difference gap between the bottom plate and the cover plate can become the air release groove or the air release area.

[0011] Further, the outer edge of the valve piece is fixedly connected with the bottom plate of the periphery of the bottom plate hole part, so that the central region of the valve piece is attached to the bottom plate; when the bottom plate hole part inhales air, the central region of the valve piece attached to the bottom plate elastically deforms to the valve piece hole part to the gas outlet hole part of the cover plate, so as to laterally seal the air release groove on the support plate, and the gas is discharged from the gas outlet hole part of the cover plate; when the gas flows reversely from the gas outlet hole part of the cover plate, the central region of the valve piece is pushed against the bottom plate, so as to seal the bottom plate hole part, and the gas is discharged from the air release groove on the support plate. The height of the support plate determines the space for the upward and downward movement of the valve piece, thereby achieving the effect of sealing the air release groove or sealing the valve piece.

[0012] Further, the side of the valve piece hole part sealing plate facing the valve piece is provided with a boss, the diameter of the boss is larger than the diameter of the valve piece hole part and smaller than the inner diameter of the bottom plate hole part. The air inlet plugging effect when deflating can be optimized, and of course the boss can also be formed on the valve piece.

[0013] Further, the side of the cover plate facing the valve piece is provided with a convex ring, the convex ring is arranged on the periphery of the cover plate air outlet hole part and concentric with the cover plate air outlet hole part. The deflation groove plugging effect when positive air outlet can be optimized, and of course the convex ring can also be formed on the valve piece.

[0014] A gas control device comprises a pump and a valve, the pump and the valve share a bottom plate, the pump has a pump chamber communicating with the bottom plate hole part. The gas flow in the valve is controlled by the pump, and the area of the deflation groove in the valve is increased, so that the airflow howling is not easy to occur, and the noise is reduced.

[0015] The beneficial effects of the utility model lie in:

[0016] The utility model provides a valve and gas control device, deflating through lateral gap, deflation area increases greatly, deflation speed promotes, be more suitable for wrist type, arm type sphygmomanometer and massager product to satisfy better user experience, can also reduce the risk of failure caused by impurity entering to improve the reliability of product,

[0017] By opposing the bottom plate hole part, the cover plate air outlet hole part and the valve piece hole part, the size can be very small, the parts are less, the structure is simple, the thickness is only less than one half of other kinds of deflation valves, the assembly is convenient, the cost is low, the movement distance of gas flowing in the valve body is extremely short, the along distance loss is small, there is no more flow channel structure causing local loss, therefore the flow resistance of the valve body is small, most of the area of the valve piece is supported by the bottom plate and the cover plate during the movement process, the response time of the valve body is very short, the real-time performance of the finished product output is ensured, the movement size of the valve piece is small, the deformation is small, the valve piece is not easy to be damaged, the reliability of the product is greatly improved, and the product is more in line with the trend of small size and thinness in 3C, personal wearing and other industries. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor;

[0019] Figure 1 It is the structural diagram of the valve;

[0020] Figure 2 It is the cross-sectional view of the valve in the static state;

[0021] Figure 3 is a sectional view of the valve in the state that the pump is powered on (the arrow represents the direction of gas flow);

[0022] Figure 4 is a sectional view of the valve in the state that the pump is powered off (the arrow represents the direction of gas flow);

[0023] Figure 5 is a schematic view of the shape of the bottom plate hole part;

[0024] Figure 6 is a schematic view of the bottom plate setting boss;

[0025] Figure 7 is a schematic view of the cover plate setting convex ring;

[0026] Figure 8 is a schematic view of the replacement of the air release groove by the air release hole;

[0027] Figure 9 is a schematic view of the cover plate setting auxiliary air hole;

[0028] Figure 10 is a schematic view of the structure of the gas control device;

[0029] In the figure, 1 is a bottom plate, 11 is a bottom plate hole part, 12 is a valve piece hole part blocking plate, 13 is a boss, 2 is a valve piece, 21 is a valve piece hole part, 3 is a support plate, 31 is an air release groove, 32 is a valve chamber, 4 is a cover plate, 41 is a cover plate air outlet hole part, 42 is a convex ring, 43 is an air release hole, 44 is an auxiliary air hole, 5 is a pump, 51 is a pump chamber. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0031] In order to accelerate the air release speed and improve the user experience, a valve is designed, as shown in Figure 1 and 2 , which comprises a bottom plate 1 with a bottom plate hole part 11, a cover plate 4 with a cover plate air outlet hole part 41, a valve piece 2 with a valve piece hole part 21, and a support plate 3 with an air release groove 31. The bottom plate 1, the support plate 3, and the cover plate 4 are sequentially stacked, the central part of the support plate 3 is a hollow cavity, forming a valve chamber 32, the valve piece 2 is placed in the valve chamber 32, the air release groove 31 is arranged on the outer peripheral part of the support plate 3, the air release groove 31 is communicated with the valve chamber 32, and the bottom plate hole part 11, the cover plate air outlet hole part 41, and the valve piece hole part 21 are opposite.

[0032] When the pump 5 is powered on, the gas from the pump chamber 51 outlet enters the bottom plate hole part 11, pushes the valve piece 2 to adhere to the plane near the cover plate gas outlet hole part 41, realizes lateral plugging, compared with the traditional plugging hole, the lateral plugging of the present scheme is the entire height space of the air leakage, that is, the gap between the bottom plate 1 and the cover plate 4, at this time, the gas cannot flow from the air leakage groove 31 of the support plate 3 to the external space, but can only flow out from the cover plate gas outlet hole part 41 of the cover plate 4; when the pump 5 is powered off, the gas reversely flows from the cover plate gas outlet hole part 41, pushes the valve piece 2 to adhere to the valve piece hole part plugging plate 12 opposite to it, realizes the plugging of the valve piece hole part 21, at this time, the gas cannot flow through the valve piece hole part 21 to the pump outlet, but can only flow out from the lateral air leakage groove 31.

[0033] The lateral air leakage space is determined by the gap between the bottom plate 1 and the cover plate 4, and the circumference of the cover plate gas outlet hole part 41, compared with the traditional single air leakage hole structure, the air leakage area is greatly increased, so the air leakage speed is greatly improved, which is more suitable for wrist type, arm type sphygmomanometer and massage instrument products, so as to meet better user experience, and the larger air leakage area can reduce the risk of impurities entering and failing, thereby improving the reliability of the product; when the gas flows in the valve chamber 32, that is, the movement distance in the process from the valve piece hole part 21 to the cover plate gas outlet hole part 41 is extremely short, the along-the-way loss is small, and there is no more flow channel structure causing local loss, so the flow resistance is small, the performance loss of the finished product after assembling the valve body is small, which can improve the production yield, improve the user experience, etc.; the up-and-down movement distance of the valve piece 2 is extremely small, and most of the area is supported by the bottom plate 1 and the cover plate 4 during the movement process, so the response time of the valve body is very short, which ensures the real-time performance of the gas output, and the valve piece 2 is not easy to be damaged during the work process due to small movement and large support, which greatly improves the reliability of the product; the air inlet, air leakage and plugging of the entire valve body are almost completely opposite, the size can be very small, the parts are less, the structure is simple, the thickness is only half of other kinds of air leakage valves, the assembly is convenient, and it is more in line with the trend of small size and thinness in 3C, personal wearing and other industries, which can effectively reduce the cost and increase the benefit.

[0034] The bottom plate hole part 11 is annular, and the middle region of the bottom plate hole part 11 forms a valve piece hole part plugging plate 12 opposite to the valve piece hole part 21. The size of the valve piece hole part plugging plate 12 is 100% to 800% of the valve piece hole part 21. The dimensionless outer edge size of the bottom plate hole part 11 is 1, and the diameter of the cover plate gas outlet hole part 41 is set according to 10% to 90% of the outer edge size of the bottom plate hole part 11; the minimum size of the valve piece hole part 21 is 0.5 mm, and the maximum size is 90% of the bottom plate hole part 41; the air leakage groove 31 has no requirement.

[0035] The diameter of the valve piece 2 is greater than the outer diameter of the bottom plate hole part 11, and the inner diameter of the bottom plate hole part 11 is greater than the diameter of the valve piece hole part 21. The area of the opposite region is determined by the structure and size of the outermost edge of the bottom plate hole part 11 and the cover plate gas outlet hole part 41, and in principle, the larger the opposite region, the larger the blocking area, the greater the force on the valve piece 2 generated by the gas flow, and the better the blocking effect. The cover plate gas outlet hole part 41 needs to exceed the flow design requirement, and at the same time ensure that the opposite area meets the reliability requirement, preferably, the diameter of the cover plate gas outlet hole part 41 is set according to 10% to 90% of the size of the outer edge of the bottom plate hole part 11.

[0036] Preferably, the outer peripheral part of the support plate 3 is provided with a plurality of air release grooves 31, and the plurality of air release grooves 31 are evenly distributed circumferentially with the center of the valve piece 2 as the center. Because air can be released all around, customers have more choices for arranging air release grooves 31, and even can be integrated on the cover plate 4 to improve integration. The height of the support plate 3 (the gap between the bottom plate 1 and the cover plate 4) is extremely important, which determines the space for the valve piece 2 to move up and down. In the static state of the valve piece 2 and the bottom plate 1, during the energization (gas outlet) process of the pump 5, the gas passing through the bottom plate hole part 11 generates an impact force on the valve piece 2 to make it away from the bottom plate 1 and move to the side of the cover plate 4. If the height of the support plate 3 is too large, the gas has bypassed the valve piece hole part 21 and entered the lateral air release groove 31 before the opposite region between the valve piece 2 and the cover plate 4 is tightly attached. At this time, there will be no pressure difference between the side of the air release groove 31 and the side of the bottom plate hole part 11, and the valve piece 2 will not continue to move to the side of the cover plate 4. Therefore, the opposite region between the valve piece 2 and the cover plate 4 cannot be tightly attached, and thus the gas cannot be discharged from the target cover plate gas outlet hole part 41. During the de-energization (air release) process of the pump 5, the valve piece 2 moves to the side of the bottom plate 1 from the state of tightly attaching to the cover plate 4. If the height of the support plate 3 is too large, the gas has bypassed the valve piece hole part 21 and entered the gap region where the valve piece 2 has not tightly attached to the valve piece hole part blocking plate 13 before the valve piece 2 tightly attaches to the valve piece hole part blocking plate 13. At this time, there will be no pressure difference between the side of the cover plate gas outlet hole part 41 and the side of the bottom plate hole part 11, and the valve piece 2 will not continue to move to the side of the valve piece hole part blocking plate 13. Therefore, the opposite region cannot be tightly attached, and thus the gas cannot be discharged from the target air release groove 31 during air release. Generally, the height of the support plate 3 can be understood as the smaller the better when the flow meets the application requirements, and in theory, it is 110% to 500% of the thickness of the valve piece 2.

[0037] As Figure 3As shown, the outer edge of the valve piece 2 is fixedly connected with the bottom plate 1 at the periphery of the bottom plate hole part 11, so that the central region of the valve piece 2 is attached to the bottom plate 1. When the bottom plate hole part 11 admits gas, the central region of the valve piece 2 attached to the bottom plate 1 is elastically deformed to the side of the cover plate 4 to make the valve piece hole part 21 enter the cover plate gas outlet hole part 41, so as to laterally block the gas discharge channel 31 on the support plate 3, and make the gas discharge from the cover plate gas outlet hole part 41. The single valve piece and the high coaxial design make the opposite area between the valve piece 2 and the cover plate 4 very large, so that the blocking reliability is greatly improved.

[0038] As shown in the figure, Figure 4 When the gas flows reversely from the cover plate gas outlet hole part 41, the central region of the valve piece 2 is pushed against the bottom plate 1 to block the bottom plate hole part 11, so as to make the gas discharge from the gas discharge channel 31 on the support plate 3. The gas discharge channel 31 has a large area and a fast discharge speed, so that it is not easy to be blocked, and the valve body discharge reliability is greatly improved. Since the horizontal direction discharge area is very large, the height direction size can be further optimized, which is beneficial to the light and thin design of the 3C industry. Moreover, since the movement size and deformation of the valve piece 2 are small, the valve piece 2 is not easy to lose service life due to excessive deformation, and the reliability is improved. At the same time, the gas discharge channel area is large, so that the airflow howling sound is not easy to occur, and the noise can be reduced.

[0039] As shown in the figure, Figure 5 The bottom plate hole part 11 is composed of a plurality of shape gas inlet holes, and the plurality of gas inlet holes are uniformly distributed around the center of the valve piece 2. Preferably, the valve piece 2 is circular, and the gas inlet hole is a fan-shaped hole or a curved waist-shaped hole or a curved square hole. The outer diameter of the valve piece 2 is 20% to 90% of the side length of the bottom plate 1, and the thickness of the valve piece 2 is 0.002 to 2 mm, which is determined according to the material characteristics. Through the cooperation of the curved arc-shaped hole and the circular valve piece 2, effective blocking can be achieved, and the blocking effect is good.

[0040] As shown in the figure, Figure 6 In order to optimize the blocking effect of the valve piece hole part 21 during gas discharge, the valve piece hole part blocking plate 12 is provided with a boss 13 on the side facing the valve piece 2, and the diameter of the boss 13 is greater than the diameter of the valve piece hole part 21 and less than the inner diameter of the bottom plate hole part 11.

[0041] As shown in the figure, Figure 7 In order to optimize the blocking effect of the gas discharge channel 31 during forward gas discharge, the cover plate 4 is provided with a convex ring 42 on the side facing the valve piece 2, and the convex ring 42 is arranged at the periphery of the cover plate gas outlet hole part 41 and is concentric with the cover plate gas outlet hole part 41.

[0042] As shown in the figure, Figure 8As shown, if the air vent groove 31 is not provided on the support plate 3, the air vent hole 43 for venting is provided on the cover plate 4 at a position deviated from the cover plate air outlet hole part 41, when the pump 5 is powered off, the gas flows reversely from the cover plate air outlet hole part 41, pushes the valve plate 2 to adhere to the valve plate hole part sealing plate 12 opposite to it, realizes the sealing of the valve plate hole part 21, at this time, the gas cannot flow upward through the valve plate hole part 21, the bottom plate 1 and the cover plate 4 are sealed by the support plate 3, the gas cannot flow to the side, and can only be discharged from the air vent hole 43 of the cover plate 4 at the eccentric position, because the gas flow distance is extremely short and the along-the-way loss is small, so the same effect of rapid air venting can be achieved.

[0043] As shown in the drawings, Figure 9 In order to further accelerate the gas flow, an auxiliary air hole 44 can also be provided on the cover plate 4, and the valve plate hole part 21 and the cover plate air outlet hole part 41 do not have an absolute size relationship, because the purpose of the scheme is to realize the gas flow circulation from the bottom plate hole part 11 to the cover plate air outlet hole part 41 by sealing the lateral air vent gap. When the size of the cover plate air outlet hole part 41 is smaller than that of the valve plate hole part 21, the auxiliary air hole 44 can also achieve the purpose of air venting.

[0044] As shown in the drawings, Figure 10 A gas control device, comprising a pump 5 and the valve, the pump 5 and the valve share the bottom plate 1, and the pump 5 has a pump chamber 51 communicated with the bottom plate hole part 11. The gas flow in the valve body is controlled by the power-on and power-off of the pump 5.

[0045] The above description is only illustrative but not restrictive for the utility model, and those skilled in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all will fall within the protection scope of the utility model.

Claims

1. A valve, characterized in that: include The base plate (1) has a base plate hole (11). The cover plate (4) has a cover plate vent (41). Valve plate (2), having valve plate hole (21), and The support plate (3) has a venting channel (31). The base plate (1), support plate (3), and cover plate (4) are stacked sequentially. The central part of the support plate (3) is hollow, forming a valve chamber (32). The valve plate (2) is placed inside the valve chamber (32). The venting channel (31) is located on the outer periphery of the support plate (3) and communicates with the valve chamber (32). The bottom plate hole (11), the cover plate vent hole (41), and the valve plate hole (21) are opposite each other.

2. The valve according to claim 1, characterized in that: The bottom plate hole (11) is annular, and the middle area of ​​the bottom plate hole (11) forms a valve plate hole sealing plate (12) opposite to the valve plate hole (21).

3. The valve according to claim 2, characterized in that: The diameter of the valve plate (2) is greater than the outer diameter of the bottom plate hole (11), and the inner diameter of the bottom plate hole (11) is greater than the diameter of the valve plate hole (21).

4. A valve according to claim 2, characterized in that: The bottom plate hole (11) is composed of several air inlets, which are evenly distributed circumferentially around the center of the valve plate (2).

5. A valve according to claim 4, characterized in that: The air inlet is a fan-shaped hole, a curved waist-shaped hole, or a curved square hole, and the valve plate (2) is circular.

6. A valve according to claim 1, characterized in that: The outer periphery of the support plate (3) is provided with a number of venting channels (31), which are evenly distributed circumferentially around the center of the valve plate (2).

7. A valve according to claim 2, characterized in that: The outer edge of the valve plate (2) is fixedly connected to the bottom plate (1) around the bottom plate hole (11), so that the central area of ​​the valve plate (2) fits against the bottom plate (1); When air enters through the bottom plate hole (11), the central area of ​​the valve plate (2) that is in contact with the bottom plate (1) elastically deforms toward the cover plate (4) until the valve plate hole (21) abuts against the air outlet hole (41) of the cover plate, which is used to laterally block the venting channel (31) on the support plate (3) so that the gas can be discharged from the air outlet hole (41) of the cover plate. When gas flows in the reverse direction from the vent hole (41) of the cover plate, the central area of ​​the valve plate (2) is pushed against the base plate (1) to block the hole (11) of the base plate, so that the gas is discharged from the vent channel (31) on the support plate (3).

8. A valve according to claim 2, characterized in that: The valve plate hole sealing plate (12) is provided with a boss (13) on the side facing the valve plate (2). The diameter of the boss (13) is larger than the valve plate hole (21) and smaller than the inner diameter of the bottom plate hole (11).

9. A valve according to claim 1, characterized in that: The cover plate (4) is provided with a protruding ring (42) on the side facing the valve plate (2). The protruding ring (42) is located around the air outlet portion (41) of the cover plate and is concentric with the air outlet portion (41) of the cover plate.

10. A gas control device, characterized in that: The device includes a pump (5) and a valve according to any one of claims 1 to 9, wherein the pump (5) and the valve share a base plate (1), and the pump (5) has a pump chamber (51) communicating with a hole (11) in the base plate.

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