Pneumatic comfort system and smart device

Abstract

This invention relates to the field of pneumatic comfort system technology, and more particularly to a pneumatic comfort system and intelligent device. The pneumatic comfort system includes an air source device, a pneumatic regulating unit, a low-pressure generator, a first valve body, a second valve body, and a third valve body. The pneumatic regulating unit includes a pneumatic regulating element that deforms during inflation and deflation. The low-pressure generator has a low-pressure port, an air inlet, and an air outlet. The low-pressure port is fluidly connected between the air inlet and the air outlet, and a negative pressure is generated at the low-pressure port when gas flows from the air inlet to the air outlet. The first valve body controls the opening and closing of the air path between the air source device and the pneumatic regulating element; the second valve body controls the opening and closing of the air path between the low-pressure port and the pneumatic regulating element; and the third valve body controls the opening and closing of the air path between the air inlet and the air source device. Through the above methods, the deflation speed and degree of the pneumatic regulating element can be increased, the inflation and deflation frequency of the pneumatic regulating unit can be increased, and its re-inflation stroke can be ensured.

Description

Technical Field

[0001] This invention relates to the field of pneumatic comfort system technology, and more particularly to a pneumatic comfort system and intelligent device. Background Technology

[0002] Pneumatic comfort systems (such as pneumatic massage systems or pneumatic support systems) typically include an air pump, an air valve, and an air bag that is connected to the air pump via the air valve. The air bag acts as a pneumatic adjustment element and deforms when inflated and deflated. When the pneumatic comfort system is working, the air pump supplies air and the air valve controls the inflation and deflation of the air bag. Massage or support adjustment is achieved through the deformation of the air bag during inflation and deflation.

[0003] Currently, when deflating an airbag, it is usually connected to the atmosphere through an air valve, relying on the high-pressure gas inside the airbag to actively flow out of the space inside the airbag to deflate it. When the air pressure inside the airbag is close to atmospheric pressure, the gas discharge rate is slow, or even difficult to discharge, resulting in incomplete and slow deflation of the airbag. This not only reduces the frequency of airbag inflation and deflation but also shortens the re-inflation cycle of the airbag. Summary of the Invention

[0004] The present invention aims to provide a pneumatic comfort system and intelligent device, which can at least improve the problems of incomplete air leakage and slow air leakage speed of pneumatic regulating elements.

[0005] To solve the above-mentioned technical problems, the embodiments of the present invention adopt the following technical solutions:

[0006] In a first aspect, embodiments of the present invention provide a pneumatic comfort system, the pneumatic comfort system comprising an air source device, a pneumatic adjustment unit, a low-pressure generator, a first valve body, a second valve body, and a third valve body; the pneumatic adjustment unit includes a pneumatic adjustment element, which deforms during inflation and deflation; the low-pressure generator is provided with a low-pressure port, an air inlet, and an exhaust port, the low-pressure port being fluidly connected between the air inlet and the exhaust port, and generating a negative pressure at the low-pressure port when gas flows from the air inlet to the exhaust port; the first valve body fluidly connects the air source device and the pneumatic adjustment unit, and is used to control the opening and closing of the air passage between the air source device and the pneumatic adjustment unit; the second valve body fluidly connects the low-pressure port and the pneumatic adjustment unit, and is used to control the opening and closing of the air passage between the low-pressure port and the pneumatic adjustment unit; the third valve body fluidly connects the air inlet and the air source device, and is used to control the opening and closing of the air passage between the air inlet and the air source device.

[0007] In some embodiments, there are multiple pneumatic regulating units connected in parallel; the first valve body controls the opening and closing of the air passage between the air source device and the multiple pneumatic regulating units.

[0008] In some embodiments, there are multiple pneumatic regulating units connected in parallel; the second valve body controls the opening and closing of the air passage between the multiple pneumatic regulating units and the low-pressure port of the low-pressure generator.

[0009] In some embodiments, the pneumatic adjustment unit further includes a control valve, which is fluidly connected between the first valve body and the pneumatic adjustment element and between the second valve body and the pneumatic adjustment element. The control valve is used to control the opening and closing of the air passage between the first valve body and the pneumatic adjustment element and to control the opening and closing of the air passage between the pneumatic adjustment element and the second valve body.

[0010] In some embodiments, there are multiple second valve bodies, each of which is fluidly connected to the pneumatic regulating unit. The low-pressure generator includes multiple low-pressure ports corresponding to the multiple second valve bodies, and each second valve body is fluidly connected to one of the low-pressure ports.

[0011] In some embodiments, there are multiple second valve bodies, each of which is fluidly connected to the pneumatic regulating unit. The low-pressure generator further includes a conductive section, which includes multiple conductive ports corresponding to the multiple second valve bodies. Each second valve body is fluidly connected to one of the conductive ports, and the multiple conductive ports are connected to the low-pressure port.

[0012] In some embodiments, the exhaust port of the low-pressure generator is provided with a silencer.

[0013] In some embodiments, the pneumatic comfort system further includes an air tank that is in fluid communication between the air source device and the third valve body.

[0014] In some embodiments, the pneumatic comfort system further includes a fourth valve body that fluidly connects the air source device to the air storage tank, and the fourth valve body is used to control the opening and closing of the air passage between the air source device and the air storage tank.

[0015] Secondly, embodiments of the present invention provide an intelligent device, the intelligent device including the pneumatic comfort system as described in any of the preceding claims.

[0016] The pneumatic comfort system of this invention includes an air source device, a pneumatic regulating unit, and a low-pressure generator. The air outlet of the air source device is fluidly connected to the pneumatic regulating unit via a valve body, and the air outlet of the air source device is also fluidly connected to the air inlet of the low-pressure generator via another valve body. The pneumatic regulating unit is fluidly connected to the low-pressure port of the low-pressure generator via another valve body. Thus, by controlling the valve body, the air source device can supply air to the pneumatic regulating unit, and the pneumatic regulating unit can release air to the low-pressure port of the low-pressure generator. Furthermore, the air source device can drive the low-pressure port of the low-pressure generator to generate low pressure, thereby accelerating the release of air from the pneumatic regulating element of the pneumatic regulating unit. Compared to the pneumatic regulating element being directly connected to the atmosphere via a valve body for release, this method is advantageous in increasing the release speed and degree of air release of the pneumatic regulating element, thereby increasing the charging and discharging frequency of the pneumatic regulating element and ensuring the recharging stroke of the pneumatic regulating element.

[0017] Moreover, compared to setting up separate air supply devices for supplying air to the pneumatic regulating unit and driving the low-pressure generator to generate low pressure, using a single air supply device to supply air to the pneumatic regulating element and drive the low-pressure generator to generate low pressure not only reduces the number of air supply devices, lowering production costs, but also reduces energy consumption. Furthermore, using an air supply device to drive the low-pressure generator to generate low pressure to accelerate the degassing of the pneumatic regulating element not only eliminates the need for a pressure relief valve but also improves degassing efficiency.

[0018] Furthermore, the exhaust port of the low-pressure generator is equipped with a silencer, which helps reduce the noise generated when the low-pressure generator exhausts into the external environment. A gas storage tank can also be installed between the gas source device and the low-pressure generator to store high-pressure gas. This gas storage tank can temporarily replace the gas source device in supplying gas to the pneumatic regulating elements and driving the low-pressure generator to produce low pressure. This not only reduces the use of the gas source device, thus lowering energy consumption and extending its service life, but the high-pressure gas in the storage tank also helps improve the venting speed and venting response speed of the pneumatic regulating elements.

[0019] The intelligent device of this invention is equipped with the above-mentioned pneumatic comfort system. While providing basic pneumatic comfort functions, it can increase the inflation and deflation frequency of the pneumatic adjustment element and ensure the re-inflation stroke of the pneumatic adjustment element, thereby enhancing the effect of pneumatic comfort adjustment and helping to reduce noise and lower production costs.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0022] Figure 1 This is a schematic diagram of the structure of a pneumatic comfort system according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of a pneumatic comfort system according to another embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of a low-voltage generator according to an embodiment of the present invention;

[0025] Figure 4 yes Figure 3 Cross-sectional view of the low-voltage generator;

[0026] Figure 5 This is a schematic diagram of the structure of a low-voltage generator according to another embodiment of the present invention.

[0027] The reference numerals in the detailed embodiments are as follows:

[0028] 100. Pneumatic comfort system;

[0029] 1. Low-voltage generator;

[0030] 11. Generator body; 111. Air inlet; 112. Exhaust outlet; 113. Low-pressure port; 114. Low-pressure generating chamber; 1141. First contraction chamber; 1142. Diffusion chamber; 1143. Second contraction chamber; 1144. Expansion chamber;

[0031] 115. Shrink drum section; 116. Nozzle;

[0032] 12. Silencing components;

[0033] 13. Conducting part; 131. Conducting port;

[0034] 2. Air source device; 3. Pneumatic regulating unit; 31. Pneumatic regulating element; 32. Control valve;

[0035] 4. First valve body; 5. Second valve body; 6. Third valve body; 7. Fluid passage; 71. First fluid passage; 72. Second fluid passage; 73. Third fluid passage; 8. Gas storage tank; 9. Fourth valve body. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or there can be one or more intervening elements. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there can be one or more intervening elements. It should be noted that, unless otherwise specified, the various features in the embodiments of this invention can be combined with each other, all within the scope of protection of this invention. Furthermore, although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described can be performed with a different module division or order than that shown in the device schematic diagram or the flowchart.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of the present invention, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0039] In the description of the embodiments of this invention, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and should not be construed as limiting the scope of protection of this invention. In the description of the embodiments of this invention, "multiple" means two or more, unless otherwise explicitly specified.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0041] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0042] Firstly, please refer to Figure 1 and Figure 2 The diagram shows a pneumatic comfort system 100 provided in an embodiment of the present invention. This pneumatic comfort system 100 can be a pneumatic massage system, a pneumatic support system, etc. Specifically, it can be at least one of a pneumatic massage system, a pneumatic lumbar support system, a pneumatic side support system, or a pneumatic soft-hardness adjustment system.

[0043] The pneumatic comfort system 100 includes a low-pressure generator 1, an air source device 2, a pneumatic regulating unit 3, a first valve body 4, and a second valve body 5. The low-pressure generator 1 provides negative pressure, which means its actual air pressure is lower than standard atmospheric pressure, i.e., lower than 101.325 kPa. Negative pressure is usually expressed as the actual air pressure minus standard atmospheric pressure; for example, negative pressure can be -40 kPa, -20 kPa, -10 kPa, etc. The air source device 2 can provide continuous airflow. The pneumatic regulating unit 3 includes a pneumatic regulating element 31, used for filling, storing, and discharging gas to achieve pneumatic regulation. The first valve body 4 controls the opening and closing of the air passage between the pneumatic regulating unit 3 and the air source device 2, and the second valve body 5 controls the opening and closing of the air passage between the pneumatic regulating unit 3 and the low-pressure generator 1.

[0044] It should be noted that, in this embodiment of the invention, the fluid supplied by the air source device 2 to the pneumatic regulating unit 3 is described using gas as an example. In other embodiments, the fluid may also be liquid, gas-liquid mixture, etc., and this invention does not limit it.

[0045] For the low-voltage generator 1 mentioned above, please refer to Figure 3 and Figure 4 As shown, the low-pressure generator 1 includes a generator body 11, which has an air inlet 111, an exhaust port 112, and a low-pressure port 113. The low-pressure port 113 is in fluid communication between the air inlet 111 and the exhaust port 112. The low-pressure generator 1 is used to generate a negative pressure at the low-pressure port 113 when gas flows from the air inlet 111 to the exhaust port 112.

[0046] For example, the generator body 11 is in the shape of a cylindrical tube, with an air inlet 111 and an exhaust port 112 at its two ends, respectively, and a radially penetrating low-pressure port 113 is provided in its wall. The flow velocity of the gas flowing from the air inlet 111 to the exhaust port 112 is greater than the flow velocity of the gas in the low-pressure port 113. Since the faster the fluid flow velocity, the lower its pressure, the gas pressure of the gas flowing from the air inlet 111 to the exhaust port 112 is less than the gas pressure in the low-pressure port 113, which causes the gas pressure at the low-pressure port 113 to decrease, i.e., a negative pressure is generated.

[0047] For the aforementioned air source device 2, an air pump, air tank, or air compressor may be selected, but is not limited to. The air source device 2 has an inlet and an outlet. The inlet is for gas to flow in, and the outlet is for gas to flow out. When the air source device 2 is working, it draws in gas through the inlet and then discharges compressed gas from the outlet to supply air. The inlet of the air source device 2 can be fluidly connected to the external environment, such as directly connected to the atmosphere. The outlet of the air source device 2 is fluidly connected to the pneumatic regulating unit 3 through the first valve body 4, supplying air to the pneumatic regulating unit 3.

[0048] For the aforementioned gas to flow from the inlet 111 to the outlet 112, this can be achieved by connecting the inlet 111 to a positive pressure pump and introducing gas into the inlet 111, or by connecting the outlet 112 to a vacuum pump and evacuating gas from the outlet 112. Alternatively, in some embodiments, please refer to... Figure 1 and Figure 2 As shown, the pneumatic comfort system 100 also includes a third valve body 6, which fluidly connects the air inlet 111 to the air source device 2. The third valve body 6 is used to control the opening and closing of the air passage between the air inlet 111 and the air source device 2. The third valve body 6 may be, but is not limited to, an air valve. For example, the third valve body 6 has two ports, which are fluidly connected to the air outlet of the air source device 2 and the air inlet 111 of the low-pressure generator 1, respectively, through pipes. The third valve body 6 is used to control the opening and closing of the air passage between the two ports, thereby controlling the opening and closing of the air passage between the air inlet 111 and the air outlet of the air source device 2. Thus, the low-pressure drive of the low-pressure generator 1 and the supply of air to the pneumatic adjustment element 31 of the pneumatic adjustment unit 3 can be achieved through a single air source device 2, eliminating the need for an additional air pump, reducing the number of air source devices 2, lowering production costs, and reducing energy consumption. It is understandable that when the air inlet 111 is ventilated through the air source device 2, the exhaust port 112 can be in fluid communication with the external environment, such as being directly connected to the atmosphere.

[0049] For the pneumatic adjustment unit 3 mentioned above, please refer to Figure 1 and Figure 2As shown, the pneumatic adjustment unit 3 includes a pneumatic adjustment element 31, which may be, but is not limited to, an air bag, a bladder, etc. Thus, the pneumatic adjustment element 31 can deform during inflation and deflation, such as undergoing expansion and contraction deformation, to achieve functions such as massage, support, or vibration. A single pneumatic adjustment unit 3 may include one or more pneumatic adjustment elements 31.

[0050] Regarding the first valve body 4 and the second valve body 5 described above, the first valve body 4 fluidly connects the air source device 2 and the pneumatic regulating unit 3, and the second valve body 5 fluidly connects the low-pressure generator 1 and the pneumatic regulating unit 3. Exemplarily, the first valve body 4 has two ports, which are fluidly connected to the air outlet of the air source device 2 and the pneumatic regulating unit 3 respectively via pipes. The first valve body 4 is used to control the opening and closing of the air passage between these two ports, thereby controlling the opening and closing of the air passage between the pneumatic regulating unit 3 and the air source device 2. The second valve body 5 has two ports, which are fluidly connected to the low-pressure port 113 of the low-pressure generator 1 and the pneumatic regulating unit 3 respectively via pipes. The second valve body 5 is used to control the opening and closing of the air passage between these two ports, thereby controlling the opening and closing of the air passage between the pneumatic regulating unit 3 and the low-pressure port 113. In an optional embodiment, please refer to... Figure 1 and Figure 2 As shown, one port of the first valve body 4 and the second valve body 5 is specifically connected in parallel to the pneumatic regulating unit 3, while the other port of the first valve body 4 is fluidly connected to the air outlet of the air source device 2, and the other port of the second valve body 5 is fluidly connected to the low-pressure port 113 of the low-pressure generator 1.

[0051] The first valve body 4 and the second valve body 5 can be, but are not limited to, pneumatic valves, such as solenoid valves or SMA (Shape Memory Alloy) valves.

[0052] The massage, support, and vibration mechanisms of the pneumatic adjustment unit 3 are explained using the pneumatic adjustment element 31 as an air bag. The first valve body 4 is fluidly connected to the pneumatic adjustment unit 3. When the first valve body 4 is open and the second valve body 5 and the third valve body 6 are closed, the air source device 2 is fluidly connected to the air bag, inflating it to compress the user, thus providing massage. Then, the first valve body 4 can be closed, disconnecting the air path between the air bag and the air source device 2, allowing the air bag to store gas to maintain its expanded state, thus providing support. Alternatively, the first valve body 4 can be closed and the second valve body 5 can be open, fluidly connecting the air bag to the low-pressure port 113 of the low-pressure generator 1. Due to the high pressure of the gas inside the air bag, the gas will automatically dissipate. The dissipated gas passes through the second valve body 5, the low-pressure port 113, and the exhaust port 112 to the atmosphere, thus deflating the air bag. Repeated inflation and deflation of the air bag achieves both compression and vibration massage effects. During the deflation process of the air bag, when the first valve body 4 is closed and the second valve body 5 and the third valve body 6 are opened at the same time, the air source device 2 introduces gas into the air inlet 111 of the low pressure generator 1, so that the low pressure port 113 generates negative pressure, which will generate negative pressure suction on the air bag, accelerate the deflation of the air bag, and make the air bag deflate quickly.

[0053] Understandably, if the airbag deflates by directly connecting to the atmosphere, the internal pressure is high at the beginning of deflation, resulting in a rapid deflation rate. However, as gas is gradually expelled, the deflation rate gradually decreases, leading to a slower deflation speed, a longer deflation cycle, and a reduced inflation / deflation frequency. When the internal pressure approaches standard atmospheric pressure, it becomes difficult to expel more gas. Consequently, the airbag cannot be completely expelled and cannot retract to its pre-inflation state, shortening the re-inflation cycle. In this embodiment of the invention, the air bag is fluidly connected via a low-pressure port 113. Because the low-pressure port 113 generates negative pressure, the air bag's deflation rate is increased, and the final air pressure inside the air bag is lower than standard atmospheric pressure. This increases the degree of deflation, making the deflation more complete and faster, thereby increasing the air bag's inflation / deflation frequency. Furthermore, the air bag can be re-inflated with more gas and exhibit greater inflation expansion deformation, ensuring the re-inflation stroke of the air bag. This also increases the inflation / deflation frequency of the pneumatic regulating element 31 and ensures its re-inflation stroke. Moreover, deflation of the pneumatic regulating element 31 is achieved through the low-pressure generator 1, eliminating the need for a pressure relief valve or a valve with a deflation function, thus reducing production costs.

[0054] In some embodiments, please refer to Figure 4As shown, the generator body 11 is provided with a low-pressure generating chamber 114, which is connected between the air inlet 111 and the exhaust port 112. The low-pressure generating chamber 114 includes a first contraction chamber 1141, the end of which faces away from the air inlet 111 and is in fluid communication with the low-pressure port 113. The first contraction chamber 1141 is a chamber whose cross-sectional area gradually decreases along the direction of fluid flow, and can be shaped like a frustum of a cone. When gas flows from the air inlet 111 to the exhaust port 112, and passes through the first contraction chamber 1141, the cross-sectional area of ​​the chamber through which gas can pass gradually decreases, the gas velocity increases, and the gas pressure decreases when the gas passes through the first contraction chamber 1141, thereby enhancing the negative pressure at the low-pressure port 113. It can be understood that the faster the gas velocity when passing through the first contraction chamber 1141, the greater the negative pressure formed at the low-pressure port 113.

[0055] In some embodiments, please refer to Figure 4 As shown, the low-pressure generating chamber 114 also includes a diffusion chamber 1142, which is fluidly connected to the end of the first contraction chamber 1141 opposite to the air inlet 111. The cross-sectional area of ​​the diffusion chamber 1142 is larger than that of the first contraction chamber 1141. For example, the diffusion chamber 1142 is cylindrical, and the end of the first contraction chamber 1141 opposite to the air inlet 111 is fluidly connected to the diffusion chamber 1142. The inner diameter of the diffusion chamber 1142 is larger than the inner diameter of the port at the end of the first contraction chamber 1141 that is fluidly connected to the diffusion chamber 1142. When gas flows from the first contraction chamber 1141 to the diffusion chamber 1142, the cross-sectional area of ​​the chamber through which gas can pass suddenly increases, making it difficult for the gas to expand into the entire diffusion chamber 1142. Furthermore, the gas velocity is relatively high, and the gas is ejected into the exhaust port 112 in a jet state, carrying gas from the diffusion chamber 1142 into the exhaust port 112, thus reducing the gas pressure within the diffusion chamber 1142. Furthermore, in this embodiment of the invention, the low-pressure port 113 is in fluid communication with the first contraction chamber 1141 through the diffusion chamber 1142. Compared with the low-pressure port 113 being directly connected to the inner wall of the first contraction chamber 1141 away from the air inlet 111, the negative pressure at the low-pressure port 113 can be enhanced.

[0056] In further embodiments, please refer to Figure 4As shown, the generator body 11 also includes a converging cylinder 115 and a nozzle 116. The converging cylinder 115 is conical in shape, with its larger opening end in fluid communication with the air inlet 111, and its other end facing the exhaust port 112. The internal space of the converging cylinder 115 defines a first converging chamber 1141. The nozzle 116 is cylindrical in shape, with one end in fluid communication with the smaller opening end of the converging cylinder 115, and its other end facing the exhaust port 112. This allows the gas to be guided and constrained by the nozzle 116 after flowing out of the converging cylinder 115, forming a jet airflow. A diffuser chamber 1142 is defined between the outer wall of the converging cylinder 115 and the nozzle 116, and the inner wall of the generator body 11. This allows the rapid airflow ejected from the nozzle 116 to more easily induce a negative pressure effect in the diffuser chamber 1142, further enhancing the negative pressure at the low-pressure port 113.

[0057] In some embodiments, please refer to Figure 4 As shown, the low-pressure generating chamber 114 also includes a second contraction chamber 1143 and an expansion chamber 1144. The second contraction chamber 1143 is fluidly connected to the end of the diffuser chamber 1142 opposite to the air inlet 111, and the expansion chamber 1144 is fluidly connected to the end of the second contraction chamber 1143 opposite to the air inlet 111. The second contraction chamber 1143 is a chamber whose cross-sectional area gradually decreases along the direction of fluid flow and can be shaped like a frustum of a cone. The expansion chamber 1144 is a chamber whose cross-sectional area gradually increases along the direction of fluid flow and can also be shaped like a frustum of a cone. It can be understood that the second contraction chamber 1143 and the expansion chamber 1144 form a Laval tube, which accelerates the gas flowing out of the diffuser chamber 1142, increases the gas velocity flowing through the low-pressure generator 1, and further enhances the negative pressure at the low-pressure port 113.

[0058] In some embodiments, please refer to Figure 4 As shown, the low-pressure generator 1 also includes a silencer 12, which is disposed at the exhaust port 112. The silencer 12 can be a sound-absorbing sheet, sound-absorbing cotton, etc. By disposing of the silencer 12 at the exhaust port 112, the noise generated when the low-pressure generator 1 exhausts gas to the external environment through the exhaust port 112 can be reduced, thus reducing adverse effects on surrounding personnel. Optionally, the silencer 12 is embedded in the inner wall of the exhaust port 112 and covers the exhaust port 112. It is understood that the silencer 12 is permeable to gas.

[0059] In some embodiments, please refer to Figure 1 and Figure 2As shown, there are multiple pneumatic adjustment units 3. The corresponding pneumatic comfort system 100 can be at least one of a pneumatic massage system, a pneumatic lumbar support system, a pneumatic side support system, and a pneumatic firmness adjustment system. The pneumatic adjustment unit 3 can include one or more pneumatic massage units, one or more pneumatic lumbar support units, one or more pneumatic side support units, and one or more pneumatic firmness adjustment units. For example, the pneumatic adjustment unit 3 includes multiple pneumatic massage units, which can enrich the massage modes and increase the massage area.

[0060] It is understood that in some other embodiments, for a pneumatic comfort system having multiple pneumatic adjustment units 3, one pneumatic adjustment unit 3 may correspond to one first valve body 4, that is, the number of first valve bodies 4 is equal to the number of pneumatic adjustment units 3, and the first valve bodies 4 and the pneumatic adjustment units 3 are fluidly connected in a one-to-one correspondence.

[0061] It is understood that in some other embodiments, for a pneumatic comfort system having multiple pneumatic adjustment units 3, one pneumatic adjustment unit 3 may correspond to one second valve body 5, that is, the number of second valve bodies 5 is equal to the number of pneumatic adjustment units 3, and the second valve bodies 5 and the pneumatic adjustment units 3 are fluidly connected in a one-to-one correspondence.

[0062] In some embodiments, multiple pneumatic regulating units 3 are connected in parallel; the first valve body 4 controls the opening and closing of the air passage between the air source device 2 and the multiple pneumatic regulating units 3. For example, please refer to... Figure 1 and Figure 2 As shown, the pneumatic comfort system 100 includes a fluid channel 7, through which multiple pneumatic adjustment elements 31 of pneumatic adjustment units 3 are connected in parallel via fluid channels 7. Preferably, the multiple fluid channels are all connected to the air source device 2 via a unified first valve body 4. The first valve body 4 connects the air source device 2 to the fluid channel 7 and controls the opening and closing of the air passage between the air source device 2 and the fluid channel 7. Thus, a single first valve body 4 controls the opening and closing of the air passage between multiple pneumatic adjustment units 3 and the air source device 2. When the first valve body 4 is open, the air source device 2 can inflate the pneumatic adjustment elements 31 of the multiple pneumatic adjustment units 3. The fluid channel 7 may be equipped with multiple air nozzles for fluid communication with multiple pneumatic adjustment units 3, and these nozzles are connected to multiple pneumatic adjustment elements 31 via pipes. Multiple pneumatic regulating units 3 are connected in parallel via fluid channel 7, eliminating the need for each pneumatic regulating unit 3 to be connected to the first valve body 4 via a pipeline. This reduces the need for piping, facilitates fluid communication between the pneumatic regulating unit 3 and the first valve body 4, and lowers costs.

[0063] In some embodiments, to meet different arrangement requirements of the multiple pneumatic adjustment units 3, such as multiple pneumatic adjustment units 3 for pneumatic massage, multiple pneumatic adjustment units 3 for pneumatic support, multiple pneumatic adjustment units 3 for pneumatic softness / hardness adjustment, etc., the fluid channel 7 includes multiple segmented and interconnected fluid channels. For example, please refer to... Figure 1 and Figure 2 As shown, the fluid channel 7 includes a first fluid channel 71, a second fluid channel 72, and a third fluid channel 73 that are fluidly connected to each other. The pneumatic adjustment units 3 are divided into three groups corresponding to the first fluid channel 71, the second fluid channel 72, and the third fluid channel 73. These three groups of pneumatic adjustment units 3 can be used for different purposes. For example, the first fluid channel 71 is a pneumatic massage fluid channel, and the corresponding group of pneumatic adjustment units 3 is a pneumatic massage unit; the second fluid channel 72 is a pneumatic lumbar support fluid channel, and the corresponding group of pneumatic adjustment units 3 is a pneumatic lumbar support unit; the third fluid channel 73 is a pneumatic side wing support fluid channel, and the corresponding group of pneumatic adjustment units 3 is a pneumatic side wing support unit. It is understood that the number of fluid channels can also be more than three.

[0064] In some embodiments, multiple pneumatic regulating units 3 are connected in parallel; the second valve body 5 controls the opening and closing of the air passage between the multiple pneumatic regulating units 3 and the low-pressure port 113 of the low-pressure generator 1. For example, please refer to... Figure 1 and Figure 2 As shown, the pneumatic comfort system 100 includes a fluid channel 7. Multiple fluid channels are fluidly connected to a low-pressure generator 1 via a unified second valve body 5. The second valve body 5 connects a low-pressure port 113 to the fluid channel 7 and controls the opening and closing of the air passage between the low-pressure port 113 and the fluid channel 7. Thus, a single second valve body 5 controls the opening and closing of the air passage between multiple pneumatic adjustment units 3 and the low-pressure port 113. When the second valve body 5 is open, the low-pressure generator 1 can release air from the pneumatic adjustment elements 31 of the multiple pneumatic adjustment units 3. By connecting multiple pneumatic adjustment units 3 in parallel to the low-pressure port 113 via the fluid channel 7, it is not necessary for each pneumatic adjustment unit 3 to be fluidly connected to the second valve body 5 via a pipe. This reduces the need for piping, ensures fluid connectivity between the pneumatic adjustment units 3 and the second valve body 5, and lowers costs.

[0065] In some embodiments, the multiple fluid channels can each be fluidly connected to the outlet of the air source device 2 through a first valve body 4, and each can be fluidly connected to the low-pressure port 113 of the low-pressure generator 1 through a second valve body 5, to accelerate the inflation and deflation speed of each fluid channel. The fluid channels can be isolated from or interconnected with each other. For example, there are three first valve bodies 4 and three second valve bodies 5. The first fluid channel 71, the second fluid channel 72, and the third fluid channel 73 are each fluidly connected to the outlet of the air source device 2 through a first valve body 4, and each is fluidly connected to the low-pressure port 113 of the low-pressure generator 1 through a second valve body 5. The first fluid channel 71, the second fluid channel 72, and the third fluid channel 73 can be isolated from or interconnected with each other. Thus, the pneumatic regulating elements 31 of each group of pneumatic regulating units 3 can be independently induced to inflate and deflate through different first valve bodies 4 and second valve bodies 5.

[0066] In some embodiments, please refer to Figure 1 and Figure 2 As shown, the pneumatic regulating unit 3 also includes a control valve 32. The control valve 32 is fluidly connected between the first valve body 4 and the pneumatic regulating element 31, and also fluidly connected between the second valve body 5 and the pneumatic regulating element 31. The control valve 32 is used to control the opening and closing of the air passage between the first valve body 4 and the pneumatic regulating element 31, and to control the opening and closing of the air passage between the pneumatic regulating element 31 and the second valve body 5. For example, the control valve 32 fluidly connects the fluid passage 7 and the pneumatic regulating element 31, and the control valve 32 is used to control the opening and closing of the air passage between the fluid passage 7 and the pneumatic regulating element 31, thereby controlling the opening and closing of the air passage between the first valve body 4 and the pneumatic regulating element 31, and controlling the opening and closing of the air passage between the pneumatic regulating element 31 and the second valve body 5. The control valve 32 may be, but is not limited to, a pneumatic valve. For example, the control valve 32 has two ports, which are respectively connected to the fluid channel 7 and the pneumatic regulating element 31 via pipes. The control valve 32 is used to control the opening and closing of the air passage between the two ports, thereby controlling the opening and closing of the air passage between the fluid channel 7 and the pneumatic regulating element 31. By setting the control valve 32, the opening and closing of the air passage between each pneumatic regulating element 31 and the fluid channel 7 can be controlled independently, that is, the charging and decharging of each pneumatic regulating element 31 can be controlled independently. The fluid channel 7 can be provided with multiple air nozzles in fluid communication with it, and these multiple air nozzles are respectively connected to multiple control valves 32 via pipes.

[0067] In some embodiments, the pneumatic comfort system 100 includes a valve body module, which includes a first valve body 4, a second valve body 5, a third valve body 6, and a control valve 32. That is, the first valve body 4, the second valve body 5, the third valve body 6, and the control valve 32 are integrated into one unit, which helps to reduce the size of the pneumatic comfort system 100 and shortens the piping or gas passages connecting the first valve body 4, the second valve body 5, the third valve body 6, and the control valve 32, further reducing the size of the pneumatic comfort system 100. It is understood that the valve body module may also exclude one or two of the first valve body 4, the second valve body 5, the third valve body 6, and the control valve 32. For example, the valve body module includes the first valve body 4 and the second valve body 5, which are integrated into one unit, while the third valve body 6 and the control valve 32 are independently disposed.

[0068] In a further embodiment, the valve body module also includes a fluid channel 7. For example, the fluid channel 7 is opened inside the valve body module, which can reduce the need for piping.

[0069] In a further embodiment, the air source device 2 and the valve body module can also be integrated into a pump-valve structure. For example, the air source device 2 is fixedly connected to the first valve body 4, the second valve body 5, the third valve body 6, and the control valve 32 as a whole.

[0070] In the pneumatic comfort system of this invention embodiment, the second valve body 5 can be set as one or more. For example, when multiple pneumatic adjustment units 3 are set, and the corresponding fluid channel 7 has multiple segments such as the first fluid channel 71, the second fluid channel 72 and the third fluid channel 73, three or one can be set to control the air leakage respectively corresponding to the multiple fluid channels.

[0071] In some embodiments, please refer to Figure 3 and Figure 4As shown, there are multiple second valve bodies 5 and multiple low-pressure ports 113. Each low-pressure port 113 corresponds to a different second valve body 5, and each second valve body 5 is fluidly connected to a low-pressure port 113. For example, the generator body 11 has multiple low-pressure ports 113 on its pipe wall, arranged circumferentially around the generator body 11. Each low-pressure port 113 is fluidly connected to a different second valve body 5 via a pipe, thereby connecting the low-pressure ports 113 to the pneumatic regulating elements 31 of the pneumatic regulating unit 3. Multiple pneumatic regulating elements 31 can vent through multiple second valve bodies 5, eliminating the need for centralized venting in a single second valve body 5, which improves the venting speed and efficiency of the pneumatic regulating elements 31. Furthermore, in the above embodiment, each second valve body 5 corresponds to a fluid channel segment, allowing each fluid channel segment and its corresponding pneumatic regulating element 31 to vent quickly, improving the venting efficiency of each group of pneumatic regulating elements 31. Furthermore, it eliminates the need for adapters such as T-joints or four-way connectors to fluidly connect multiple second valve bodies 5 to the same low-pressure port 113, which helps reduce costs. Additionally, connecting multiple second valve bodies 5 to the same low-pressure generator 1 via additional adapters increases the probability of leakage; therefore, this embodiment helps reduce the probability of leakage and enhances sealing.

[0072] In other embodiments, please refer to Figure 5As shown, there are multiple second valve bodies 5. The low-pressure generator 1 includes a conductive section 13, which includes multiple conductive ports 131. Each conductive port 131 corresponds to a multiple second valve body 5, and each second valve body 5 is fluidly connected to a conductive port 131. Furthermore, the multiple conductive ports 131 are connected to low-pressure ports 113. For example, the multiple conductive ports 131 are fluidly connected to the multiple second valve bodies 5 through pipes, thereby connecting the conductive ports 131 to the pneumatic regulating elements 31 of the pneumatic regulating unit 3. Similar to the principle of the multiple low-pressure ports 113, the multiple pneumatic regulating elements 31 can be vented through multiple second valve bodies 5, eliminating the need for centralized venting in a single second valve body 5. This improves the venting speed and efficiency of the pneumatic regulating elements 31. Moreover, when each second valve body 5 corresponds to a fluid channel, each fluid channel and its corresponding pneumatic regulating element 31 can vent quickly, improving the venting efficiency of each group of pneumatic regulating elements 31. Furthermore, it eliminates the need for adapters such as T-joints or four-way connectors to fluidly connect multiple second valve bodies 5 to the same low-pressure generator 1, which helps reduce costs, lowers the probability of leakage, and enhances sealing. Moreover, the guide ports 131 are concentrated in the guide section 13. Compared to the multiple low-pressure ports 113 opened on the pipe wall of the generator body 11, the position of the guide ports 131 is more compact, facilitating pipe connection. The guide section 13 is located on one side of the generator body 11. After multiple pipes are connected to the guide ports 131, these pipes can be bundled together, improving the compactness of the low-pressure generator 1 and the multiple pipes, reducing the occupied volume, and facilitating the installation of the low-pressure generator 1 and the multiple pipes on the target equipment.

[0073] In some embodiments, please refer to Figure 2 As shown, the pneumatic comfort system 100 also includes an air tank 8, which is fluidly connected between the air outlet of the air source device 2 and the third valve body 6. The air tank 8 can be a metal tank, a plastic tank, etc., and can contain high-pressure gas.

[0074] It is understandable that the gas output speed of the gas source device 2 is limited. When gas is directly introduced into the air inlet 111 through the gas source device 2, the gas flow rate in the low-pressure generator 1 is slow, and the negative pressure at the low-pressure port 113 is small. Therefore, the gas release speed of the pneumatic regulating element 31 is slow. In this embodiment of the invention, the gas can be stored in the gas storage tank 8 first. For example, the first valve body 4 and the third valve body 6 can be closed, and the gas source device 2 can be controlled to output gas, thereby compressing and storing the gas in the gas storage tank 8. Then, when the pneumatic regulating element 31 needs to release gas, the third valve body 6 can be opened. The gas output by the gas source device 2 and the gas in the gas storage tank 8 flow to the air inlet 111 at the same time, which helps to improve the gas release speed of the pneumatic regulating element 31, reduce the gas release delay, and improve the gas release response speed. Furthermore, when air is supplied to the air inlet 111, the air source device 2 does not need to be turned on; gas is supplied to the air inlet 111 only through the air storage tank 8. That is, the air storage tank 8 temporarily acts as the air source device 2 to supply gas to the air inlet 111 of the low-pressure generator 1. This helps to reduce the use of the air source device 2, reduce energy consumption, and extend the service life of the air source device 2. When storing gas in the air storage tank 8, the first valve body 4 can also be opened, that is, the air storage tank 8 is stored while the pneumatic regulating element 31 is being charged.

[0075] It is understandable that the gas stored in the gas tank 8 can also be output to the pneumatic regulating element 31. For example, after compressing and storing the gas in the gas tank 8, the first valve body 4 is opened, and the gas output from the gas source device 2 and the gas in the gas tank 8 flow to the pneumatic regulating element 31 simultaneously. This helps to increase the inflation speed of the pneumatic regulating element 31, reduce inflation delay, and improve inflation response speed. Furthermore, when inflating the pneumatic regulating element 31, the gas source device 2 does not need to be turned on; the gas is supplied to the pneumatic regulating element 31 only through the gas tank 8. That is, the gas tank 8 temporarily replaces the gas source device 2 to supply gas to the pneumatic regulating element 31, which helps to reduce the use of the gas source device 2, reduce energy consumption, and extend the service life of the gas source device 2.

[0076] In some embodiments, please refer to Figure 2As shown, the pneumatic comfort system 100 also includes a fourth valve body 9, which fluidly connects the air source device 2 and the air storage tank 8. The fourth valve body 9 is used to control the opening and closing of the air passage between the air source device 2 and the air storage tank 8. The fourth valve body 9 can be, but is not limited to, an air valve. For example, the fourth valve body 9 has two ports, which are fluidly connected to the air outlet of the air source device 2 and the air storage tank 8 respectively through pipes. The control valve 32 is used to control the opening and closing of the air passage between the two ports, thereby controlling the opening and closing of the air passage between the air source device 2 and the air storage tank 8. By setting the fourth valve body 9, after a certain amount of gas is stored in the air storage tank 8, the fourth valve body 9 can be closed, thereby continuously storing gas in the air storage tank 8. At this time, opening the first valve body 4 allows the air source device 2 to supply gas to the pneumatic regulating element 31, and the gas in the air storage tank 8 will not be released into the pneumatic regulating element 31. Furthermore, before the pneumatic regulating element 31 is fully inflated, the fourth valve body 9 can be opened, allowing the inflation speed of the pneumatic regulating element 31 to increase during inflation, which is beneficial for enriching the pneumatic regulating effect of the pneumatic regulating element 31. In addition, when the air source device 2 supplies gas to the pneumatic regulating element 31, gas can be simultaneously supplied to the air storage tank 8. Then, when the pneumatic regulating element 31 needs to deflate, gas can be immediately supplied to the air inlet 111 through the air storage tank 8, without having to wait for the air source device 2 to supply gas to the air storage tank 8 after the pneumatic regulating element 31 is fully inflated, thus shortening the deflation waiting time of the pneumatic regulating element 31.

[0077] In some embodiments, the air tank 8 is equipped with a pressure regulating valve (not shown). The pressure regulating valve is used to connect the air tank 8 to the external environment when the air pressure in the air tank 8 is too high, that is, to release the pressure in the air tank 8 to enhance the safety of the pneumatic comfort system 100. Optionally, the pressure regulating valve may also be provided in the third valve body 6, the fourth valve body 9, or in the pipeline between the air tank 8 and any one of the third valve body 6 and the fourth valve body 9.

[0078] Secondly, the intelligent device (not shown) provided in this embodiment of the invention includes a pneumatic comfort system 100. Optionally, the intelligent device is an intelligent massage chair, vehicle seat, office chair, mattress, etc. The intelligent device, equipped with the aforementioned pneumatic comfort system 100, provides basic pneumatic comfort adjustment functions while increasing the inflation / deflation frequency of the pneumatic adjustment element 31 and ensuring the re-inflation stroke of the pneumatic adjustment element 31, thereby enhancing the pneumatic comfort effect and helping to reduce noise and lower production costs.

[0079] The pneumatic comfort system 100 is installed on the smart device to add pneumatic adjustment functions, such as pneumatic massage functions. For example, the pneumatic comfort system 100 is installed on a seat, and the pneumatic adjustment element 31 is located on the seat back. The air source device 2, the low-pressure generator 1, and the valve body can be located on the seat back or outside the seat back. When the pneumatic adjustment element 31 is inflated and deflated, it can squeeze and massage the back of the seated person to provide a massage function.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the present invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pneumatic comfort system, characterized in that, include: Gas source device; A pneumatic regulating unit includes a pneumatic regulating element that deforms during inflation and deflation; A low-pressure generator is provided with a low-pressure port, an air inlet, and an exhaust port. The low-pressure port is fluidly connected between the air inlet and the exhaust port. When gas flows from the air inlet to the exhaust port, a negative pressure is generated at the low-pressure port. The first valve body connects the air source device and the pneumatic regulating unit in fluid communication. The first valve body is used to control the opening and closing of the air passage between the air source device and the pneumatic regulating unit. The second valve body connects the low-pressure port to the pneumatic regulating unit in fluid communication. The second valve body is used to control the opening and closing of the air passage between the low-pressure port and the pneumatic regulating unit. The third valve body connects the air inlet to the air source device in fluid communication, and the third valve body is used to control the opening and closing of the air passage between the air inlet and the air source device.

2. The pneumatic comfort system according to claim 1, characterized in that, The pneumatic regulating unit is multiple, and the multiple pneumatic regulating units are connected in parallel; the first valve body controls the opening and closing of the air passage between the air source device and the multiple pneumatic regulating units.

3. The pneumatic comfort system according to claim 1, characterized in that, The pneumatic regulating unit comprises multiple units connected in parallel; the second valve body controls the opening and closing of the air passage between the multiple pneumatic regulating units and the low-pressure port of the low-pressure generator.

4. The pneumatic comfort system according to claim 1, characterized in that, The pneumatic adjustment unit further includes a control valve, which is fluidly connected between the first valve body and the pneumatic adjustment element and between the second valve body and the pneumatic adjustment element. The control valve is used to control the opening and closing of the air passage between the first valve body and the pneumatic adjustment element and to control the opening and closing of the air passage between the pneumatic adjustment element and the second valve body.

5. The pneumatic comfort system according to claim 1, characterized in that, There are multiple second valve bodies, and each of the multiple second valve bodies is fluidly connected to the pneumatic regulating unit. The low-pressure generator includes multiple low-pressure ports corresponding to the multiple second valve bodies, and each second valve body is fluidly connected to one of the low-pressure ports.

6. The pneumatic comfort system according to claim 1, characterized in that, There are multiple second valve bodies, and each of the multiple second valve bodies is fluidly connected to the pneumatic regulating unit. The low-pressure generator also includes a conductive part, which includes multiple conductive ports corresponding to the multiple second valve bodies. Each second valve body is fluidly connected to one of the conductive ports, and the multiple conductive ports are connected to the low-pressure port.

7. The pneumatic comfort system according to claim 1, characterized in that, The exhaust port of the low-pressure generator is equipped with a silencer.

8. The pneumatic comfort system according to any one of claims 1 to 7, characterized in that, The pneumatic comfort system also includes an air tank, which is in fluid communication between the air source device and the third valve body.

9. The pneumatic comfort system according to claim 8, characterized in that, The pneumatic comfort system also includes a fourth valve body, which connects the air source device to the air storage tank in fluid communication and is used to control the opening and closing of the air passage between the air source device and the air storage tank.

10. A smart device, characterized in that, Includes the pneumatic comfort system as described in any one of claims 1 to 9.

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