Air valve and pneumatic comfort system

Abstract

The embodiment of the utility model relates to the technical field of fluid control, and particularly discloses an air valve and a pneumatic comfort system. The valve body is provided with a conduction chamber, an air inlet channel, an air conveying channel and an exhaust channel, wherein the air inlet channel, the air conveying channel and the exhaust channel communicate with the conduction chamber. A valve core is arranged in the conduction chamber; the gas valve has a gas transmission state in which the valve core seals the port of the exhaust channel and the gas inlet channel is communicated with the gas transmission channel, and an exhaust state in which the valve core seals the port of the gas inlet channel and the exhaust channel is communicated with the gas transmission channel; the air inlet channel is provided with a first air guide section, and the inner diameter of the first air guide section is gradually reduced in the air inlet direction so that air can smoothly enter the communicating chamber from the air inlet channel. By means of the mode, vortex can not be generated when gas in the gas valve passes through, and then noise generated when the gas passes through the gas valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to an air valve and a pneumatic comfort system. Background Art

[0002] Pneumatic comfort systems, such as pneumatic massage systems, pneumatic lumbar support systems, pneumatic wing support systems, etc., usually use a valve module to control the connection between the air source device and the air bag. Among them, the valve module is provided with multiple valves, such as electromagnetic valves, and the valve has a valve core arranged in a conduction chamber and an air intake channel, an air transmission channel and an exhaust channel connected to the conduction chamber. The air transmission channel of each valve is respectively connected to an air bag. When working, the valve core in the valve is controlled to switch and block the exhaust channel or the air intake channel to control the air intake channel and the exhaust channel to switch and connect with the air transmission channel, so as to control the inflation and deflation of the corresponding air bag.

[0003] However, in traditional air valves, such as electromagnetic air valves, the connecting corners between the air intake channel and the conduction chamber, and the connecting corners between the conduction chamber and the gas transmission channel are usually right-angle structures. When air is inhaled, the high-speed airflow is easily blocked and generates vortices at the connecting corners between the air intake channel and the conduction chamber. At the same time, when the high-speed airflow passes through the connecting corners between the conduction chamber and the gas transmission channel, vortices will be generated due to negative pressure. The gas in the exhaust process will also be blocked and generate vortices when passing through the connecting corners between the conduction chamber and the gas transmission channel. The generation of vortices in the air path of the air valve is not only not conducive to the smooth flow of gas, but also generates whistling noise, affecting the overall user experience of the pneumatic comfort system. Utility Model Content

[0004] The utility model is mainly to solve the problem that the connection between the conduction chamber inside the air valve of the air valve module and each ventilation channel in the pneumatic comfort system of the prior art has an airflow interference structure which easily leads to poor airflow and noise, and provides an air valve and a pneumatic comfort system.

[0005] A technical solution adopted by the utility model is: to provide an air valve, including a valve body; a conduction chamber and an air intake channel, an air transmission channel and an air exhaust channel respectively connected to the conduction chamber are arranged on the valve body; a valve core is arranged in the conduction chamber; the air valve has an air transmission state in which the valve core closes the port of the air exhaust channel and connects the air intake channel with the air transmission channel, and an air exhaust state in which the valve core closes the port of the air intake channel and connects the air exhaust channel with the air transmission channel; the air intake channel has a first air conduction section in which the inner diameter gradually decreases along the air intake direction, so that the gas can smoothly enter the conduction chamber from the air intake channel.

[0006] Optionally, the inner surface of the first air guiding segment includes at least one of a curved surface and an inclined straight surface.

[0007] Optionally, the first air guiding section is connected to the conduction chamber.

[0008] Optionally, a coil is provided on the valve body, and the valve core is displaced by the excitation of the coil to close the port of the intake channel or the port of the exhaust channel.

[0009] Optionally, a reset element is provided; the reset element causes the valve core to normally close the port of the exhaust passage or normally close the port of the intake passage.

[0010] Optionally, the valve body includes a first valve body and a second valve body which are sealed and connected, the conduction chamber, the gas transmission channel and the exhaust channel are arranged in the first valve body, and the air intake channel is arranged in the second valve body.

[0011] Optionally, the gas delivery channel has a second gas guiding section whose inner diameter gradually decreases along the gas inlet direction in the gas delivery state, so that the gas can smoothly flow in and out between the gas delivery channel and the conduction chamber.

[0012] Optionally, the inner surface of the second air guiding segment includes at least one of an arcuate surface and an inclined straight surface.

[0013] Optionally, the second air guiding section is connected to the conduction chamber.

[0014] In order to solve the above technical problems, another technical solution adopted by the utility model is to provide a pneumatic comfort system, including an air source device, a gas distribution device and an air bag, the air bag is connected to the air source device through the gas distribution device, and the gas distribution device includes the above-mentioned air valve.

[0015] The beneficial effects of the embodiments of the utility model are:

[0016] The air valve of the utility model is provided with an air guide section whose inner diameter gradually decreases along the air intake direction at the connection point between the air intake passage and the conduction chamber of the valve body. Compared with the structure of the traditional air valve, it can reduce the generation of vortexes due to the interference of the right-angle turn structure at the connecting part, effectively guide the airflow to smoothly enter the conduction chamber from the air intake passage, and reduce the noise when the gas flows in the air valve.

[0017] In addition, another air guide section is further provided at the junction of the conduction chamber and the air delivery channel, which can reduce the generation of vortices caused by the interference of the right-angle turn structure at the connection between the conduction chamber and the air delivery channel, and further reduce the noise when the air valve is working.

[0018] The pneumatic comfort system of the utility model adopts a gas distribution device provided with the air valve, which can realize the inflation and deflation control of the air bag. The gas distribution device is integrated with the possibility of gas path switching and the possibility of avoiding the generation of internal vortexes, which meets the fast inflation and deflation requirements and low noise requirements of the equipment equipped with the gas distribution device, and can effectively improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the explosion structure of the gas valve of the embodiment of the utility model;

[0021] Figure 2 It is a schematic diagram of the assembly structure of the gas valve of the embodiment of the utility model;

[0022] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 4 It is a schematic cross-sectional structural diagram of the gas valve without the valve core of the embodiment of the utility model;

[0024] Figure 5 It is a schematic cross-sectional structural diagram of a gas valve with a valve core according to an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the split cross-sectional structure of the first valve body and the second valve body of the gas valve provided by an embodiment of the utility model.

[0026] Reference numerals:

[0027] 1000, air valve;

[0028] 1. Valve body; 1a. First valve body; 1a1. Plug slot; 1b. Second valve body; 1b1. Plug connector; 1c. Spool; 1d. Coil; 11. Air inlet channel; 111. First air guide section; 112. Air inlet port; 12. Conducting chamber; 13. Air delivery channel; 131. Second air guide section; 131a. Oblique straight surface; 14. Exhaust channel; 141. Exhaust port;

[0029] 2. Valve core;

[0030] 3. Reset element;

[0031] 4. Sealing ring. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements therebetween. The terms "first", "second", "third", etc. used in this specification are only for the convenience of the description of the embodiments of this specification, and do not show the importance of the corresponding components.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0034] See also Figures 1 to 5 The gas valve 1000 of the embodiment of the utility model can be applied to a gas distribution device of a pneumatic comfort system. The gas valve 1000 includes a valve body 1 and a valve core 2.

[0035] Among them, the valve body 1 is provided with an air intake channel 11, a conduction chamber 12, a gas transmission channel 13 and an exhaust channel 14. The air intake channel 11, the gas transmission channel 13 and the exhaust channel 14 are respectively connected to the conduction chamber 12, and the air intake channel 11, the gas transmission channel 13 and the exhaust channel 14 can exchange gases with the conduction chamber 12 respectively.

[0036] The valve core 2 can reciprocate between the first position and the second position in the conduction chamber 12, thereby changing the conduction state between the conduction chamber 12 and the gas transmission channel 13, and changing the conduction state between the conduction chamber 12 and the exhaust channel 14; the connection state between the gas transmission channel 13 and the conduction chamber 12 is not affected by the valve core 2, and the conduction chamber 12 and the gas transmission channel 13 are in a normalized conduction state. The valve core 2 is arranged in the conduction chamber 12, and there is a gap between the outer surface of the valve core 2 and the inner wall of the conduction chamber 12, which serves as a fluid channel for gas circulation and ensures that the valve core 2 can move smoothly in the conduction chamber 12, or a groove can be formed on the outer surface of the valve core 2 as a fluid channel, so that when the valve core 2 closes the exhaust port 141 of the exhaust channel 14, the gas flowing into the gas valve 1000 from the intake channel 12 can flow smoothly to the gas transmission channel 13 through the fluid channel.

[0037] It is worth noting that the gas valve 1000 has two ventilation states under the action of the valve core 2, which are: when the valve core 2 moves to the first position, the valve core 2 closes the exhaust port 141 of the exhaust channel 14 and enables the intake channel 11 and the gas delivery channel 13 to communicate through the fluid channel, which is a gas delivery state; when the valve core 2 moves to the second position, the valve core 2 closes the intake port 112 of the intake channel 11 and enables the exhaust channel 14 and the gas delivery channel 13 to communicate through the conduction chamber 12, which is an exhaust state. Specifically, when the valve core 2 is located at the first position and the gas valve 1000 is in the gas delivery state, the intake channel 11 and the gas delivery channel 13 are communicated through the fluid channel, and the conduction chamber 12 and the exhaust channel 14 are cut off by the valve core 2; when the valve core 2 is located at the second position and the gas valve 1000 is in the exhaust state, the exhaust channel 14 and the gas delivery channel 13 are communicated through the conduction chamber 12, and the conduction chamber 12 and the intake channel 11 are cut off by the valve core 2.

[0038] In addition, the air intake passage 11 has a first air guiding section 111 whose inner diameter gradually decreases along the air intake direction, so that the gas can smoothly flow from the air intake passage 11 into the guiding chamber 12 .

[0039] For the first air guide section 111, please refer to Figure 4 and Figure 5 The first air guiding section 111 is a local section of the air intake passage 11 close to the conduction chamber 12, and the first air guiding section 111 is connected to the conduction chamber 12, and the remaining local sections of the air intake passage 11 are smoothly connected to the local section where the first air guiding section 111 is provided, so as to minimize the influence of the first air guiding section 111 on the passing gas.

[0040] Specifically, compared with the traditional solenoid valve, the first air guide section 111 at least eliminates the right-angle turn structure at the connection between the intake channel 11 and the guide chamber 12. Based on the design requirements of the first air guide section 111, the inner diameter of the first air guide section 111 varies relative to the remaining sections of the intake channel 11 to facilitate the guidance of the intake airflow, that is, the gas will not be blocked by right angles or quasi-right angles or interfered with to generate vortices when passing through the connection.

[0041] Compared with the design of a right-angle turn structure at the connection between the air intake channel and the conduction chamber of a traditional solenoid valve, the setting of the first air guide section 111 allows the gas to smoothly enter the conduction chamber 12 from the air intake channel 11, and no vortex will be generated at the connection between the air intake channel 11 and the conduction chamber 12 due to the interference of the right-angle turn structure, thereby reducing the noise of the air valve 1000 when it is working.

[0042] It is worth noting that the inner surface of the first air guide section 111 should conform to the aerodynamic design as much as possible to reduce the wind resistance of the gas passing through the air valve 1000, so as to smoothly guide the rapid passage of high-speed gas in the air valve 1000. Preferably, the inner surface of the first air guide section 111 includes at least one of an arcuate surface and an oblique straight surface. For example, in some embodiments, the inner surface of the first air guide section 111 can be an arcuate surface protruding toward the center of the air intake channel 11, such as a trumpet-shaped structure whose inner diameter gradually decreases along the air intake direction; or, in other embodiments, the inner surface of the first air guide section 111 can be an oblique straight surface, so that the overall design of the first air guide section 111 is a conical structure whose inner diameter gradually decreases along the air intake direction; or, the inner surface of the first air guide section 111 can be a surface that combines an arcuate surface and an oblique straight surface, wherein the arcuate surface and the oblique straight surface can be arranged in sections on the inner surface of the first air guide section 111.

[0043] The arc surface and / or the inclined straight surface combined with the design of gradually reducing the inner diameter allows the first air guiding section 111 to smoothly guide the flow of gas so that it flows in a predetermined forward direction, reducing the obstruction to the forward movement of gas at the connection point between the air inlet channel 11 and the guide chamber 12, thereby avoiding the possibility of generating vortices.

[0044] In some preferred embodiments, Figure 4 and Figure 5 As shown, the first air guide section 111 adopts a trumpet-shaped design with an arc surface, and the inner diameter of the first air guide section 111 gradually decreases from the end away from the conduction chamber 12 to the end close to the conduction chamber 12. It can be understood that the diameter of the air inlet passage 11 is relatively large, and the arc surface design can select a larger arc surface curvature than the oblique straight surface design to meet the buffering and guiding requirements of the first air guide section 111.

[0045] Further, such as Figure 4 and Figure 5 As shown, the gas delivery channel 13 has a second gas guiding section 131 whose inner diameter gradually decreases along the gas inlet direction in the gas delivery state, so that the gas can smoothly flow in and out between the gas delivery channel 13 and the conducting chamber 12 .

[0046] For the second air guide section 131, please refer to Figure 5 As shown, the second gas guiding section 131 is a local section of the gas delivery channel 13 close to the conduction chamber 12, and the second gas guiding section 131 is connected to the conduction chamber 12, and the remaining local sections of the gas delivery channel 13 are smoothly connected to the local section provided with the second gas guiding section 131, so as to reduce the influence of the second gas guiding section 131 on the passing gas as much as possible.

[0047] Specifically, compared with the traditional solenoid valve, the second air guide section 131 is at least a structure that eliminates the right-angle turn structure at the connection between the air supply channel 13 and the conduction chamber 12. Based on the design requirements of the second air guide section 131, the inner diameter of the second air guide section 131 is changed relative to the remaining sections of the air supply channel 13, especially the port of the air supply channel 13 connected to the conduction chamber 12, so as to facilitate the guidance of the inlet and outlet airflows, that is, the gas will not be blocked by right angles or quasi-right angles when passing through the connection or be interfered with to generate vortices.

[0048] Compared with the design of a right-angle turn structure at the connection between the gas supply channel and the conduction chamber of a traditional solenoid valve, the setting of the second gas guide section 131 allows the gas to smoothly enter the gas supply channel 13 from the conduction chamber 12 or from the gas supply channel 13 to the conduction chamber 12, and no vortex will be generated at the connection between the gas supply channel 13 and the conduction chamber 12 due to the interference of the right-angle turn structure, so as to further reduce the noise of the gas valve 1000 during operation.

[0049] It is worth noting that the inner surface of the second air guide segment 131 should conform to the aerodynamic design as much as possible to reduce the wind resistance of the gas passing through the air valve 1000, so as to smoothly guide the rapid passage of high-speed gas in the air valve 1000. Preferably, the inner surface of the second air guide segment 131 includes at least one of an arcuate surface and an oblique straight surface. For example, in some embodiments, the inner surface of the second air guide segment 131 can be an arcuate surface that is concave in the center away from the gas delivery channel 13; or, in other embodiments, the inner surface of the second air guide segment 131 can be an oblique straight surface; or, the inner surface of the second air guide segment 131 can be a surface that combines an arcuate surface and an oblique straight surface, wherein the arcuate surface and the oblique straight surface can be arranged in sections on the inner surface of the second air guide segment 131.

[0050] The arc surface and / or the inclined straight surface combined with the design of gradually reducing the inner diameter allows the second gas guiding section 131 to smoothly guide the flow of gas so that it flows in a predetermined forward direction, reducing the obstruction to the forward movement of gas at the connection between the gas delivery channel 13 and the conduction chamber 12, thereby reducing the possibility of generating vortices.

[0051] In some preferred embodiments, please refer to Figure 3 Combined with Figure 6As shown, the inner surface of the second gas guide section 131 adopts the design of an inclined straight surface 131a. Since the second gas guide section 131 is set to eliminate the right-angle turn structure at the connection between the gas transmission channel 13 and the conduction chamber 12, the inclined straight surface 131a makes the conduction chamber 12 and the gas transmission channel 13 connected in a chamfered manner, and the gas transmission channel 13 and the conduction chamber 12 smoothly transition without a right angle or quasi-right angle gas vortex native structure. The inner diameter of the second gas guide section 131 relative to the connection port between the gas transmission channel 13 and the conduction chamber 12 gradually decreases from the end of the gas transmission channel 13 close to the conduction chamber 12 to the end away from the conduction chamber 12. Due to the presence of the second gas guide section 131 in the gas transmission channel 13, the gas valve 1000 can flow smoothly in the state of filling and exhausting, that is, when the gas flows from the conduction chamber 12 into the gas transmission channel 13, and when the gas flows from the gas transmission channel 13 into the conduction chamber 12, the generation of vortex and noise is reduced.

[0052] It can be understood that the present embodiment is only used as an example and does not specifically limit the specific position distribution of the air intake channel 11, the conduction chamber 12, the air supply channel 13 and the exhaust channel 14. Under the premise of not affecting the function, the positions and opening and closing of the air intake channel 11, the conduction chamber 12, the air supply channel 13 and the exhaust channel 14 can be arranged and combined in various ways to form air valves of different shapes. Accordingly, the specific distribution positions of the first air guide segment 111 and the second air guide segment 131, as well as the direction of reduction of the inner diameter can be set according to actual needs.

[0053] Of course, in some other preferred embodiments, a third air guide segment similar to the first air guide segment 111 and the second air guide segment 131 may be further provided at the junction of the exhaust channel 14 and the conduction chamber 12 to guide the gas to flow smoothly from the conduction chamber 12 to the exhaust channel 14 in the exhaust state, thereby reducing the generation of gas vortex and noise at the junction of the exhaust channel 14 and the conduction chamber 12 in the exhaust state. Alternatively, a sound-absorbing cotton may be provided in the exhaust channel 14 to reduce the noise in the exhaust state.

[0054] The switching drive of the valve core 2 between the first position and the second position can be achieved by excitation. Figure 1 , Figure 4 , Figure 5 , a bobbin 1c and a coil 1d are provided on the valve body 1, the coil 1d is wound on the bobbin 1c, and the valve core 2 is located within the excitation range of the coil 1d. In an optional embodiment, the conduction chamber 12 is provided in the bobbin 1c, so that the winding range of the coil 1d corresponds to the movement range of the valve core 2, and the valve core 2 can reciprocate within the winding range under the excitation of the coil 1d; the coil 1d has a pin for an external power supply. When the coil 1d is powered on, the coil 1d generates a magnetic field, and the valve core 2 is displaced by the excitation of the coil 1d to close the intake port 112 of the intake channel 11 or the exhaust port 141 of the exhaust channel 14.

[0055] In some other embodiments, please refer to Figure 1 The air valve 1000 is also provided with a reset element 3. In the non-powered state, the elastic action of the reset element 3 is utilized to cause the valve core 2 to normally close the port of the intake passage 11 or the port of the exhaust passage 14.

[0056] The above-mentioned reset element 3 includes but is not limited to a spring, a spring, etc. The reset element 3 is connected between the valve core 2 and the inner wall of the conduction chamber 12 where the air inlet port 112 is set, so as to prompt the valve core 2 to normally close the exhaust port 141 of the exhaust channel 14, or the reset element 3 is connected between the valve core 2 and the inner wall of the conduction chamber 12 where the exhaust port 141 is set, so as to prompt the valve core 2 to normally close the air inlet port 112 of the intake channel 11.

[0057] In some preferred embodiments, the reset element 3 is preferably a spring, one end of which abuts against one end of the valve core 2, and the other end of which abuts against the inner wall of the conduction chamber 12 where the air inlet port 112 is provided. The elastic force of the spring makes the coil 1d normally close the exhaust port 141 of the exhaust channel 14 in the non-energized state. When the coil 1d is energized, the excitation of the coil 1d causes the valve core 2 to overcome the elastic force of the spring and move closer to and close the air inlet port 112, while opening the exhaust port 141 of the exhaust channel 14 and communicating with the conduction chamber 12, that is, the exhaust channel 14, the conduction chamber 12 and the gas transmission channel 13 are connected in sequence. When the coil 1d stops being energized, the valve core 2 moves to the exhaust port 141 under the action of the reset element 3 to reset and close the exhaust port 141, while opening the air inlet port 112 of the air inlet channel 11 and communicating with the fluid channel.

[0058] In some embodiments, the valve body 1 can be manufactured by one-piece molding, including but not limited to casting, 3D printing, etc., or it can also be assembled in parts, for example, by assembling multiple valve bodies such as two valve bodies or three valve bodies.

[0059] In some preferred embodiments, see Figure 6 The valve body 1 includes a first valve body 1a and a second valve body 1b which are sealed and connected, wherein the conduction chamber 12, the gas delivery channel 13 and the exhaust channel 14 are respectively arranged on the first valve body 1a, and the air intake channel 11 is arranged on the second valve body 1b.

[0060] It can be understood that the sealing connection between the first valve body 1a and the second valve body 1b includes but is not limited to using a sealing ring, a rubber pad, an interference fit, etc.

[0061] In some embodiments, a sealing ring 4 is preferably used to achieve a sealed connection between the first valve body 1a and the second valve body 1b. The first valve body 1a is provided with a plug slot 1a1, and the second valve body 1b is provided with a plug connector 1b1 adapted to the plug slot 1a1. The plug connector 1b1 can be plugged into the plug slot 1a1. The sealing ring 4 is sleeved on the plug connector 1b1, and the outer side of the sealing ring 4 abuts against the inner wall of the plug slot 1a1 to seal the gap between the plug slot 1a1 and the plug connector 1b1, thereby achieving a sealed connection between the first valve body 1a and the second valve body 1b.

[0062] For the valve core 2 above, please refer to Figure 5 and Figure 6 , the material of the valve core 2 includes but is not limited to an iron core, a permanent magnet, etc. In some preferred embodiments, the valve core 2 adopts a design of a combination of an iron core and a permanent magnet. Specifically, the main body of the valve core 2 is made of an iron core, and the end of the valve core 2 facing the air inlet channel 11 and the end facing the exhaust channel 14 are respectively connected to permanent magnets. The connection method between the main iron core of the valve core 2 and the permanent magnet includes but is not limited to gluing, clamping, magnetic attraction, etc. The design of this combined structure not only reduces the high cost of the valve core 2 completely adopting permanent magnets, but also avoids the problem of insufficient magnetic force of the iron core valve core 2.

[0063] In other preferred embodiments, the valve core 2 is provided with sealing members at one end facing the air inlet passage 11 and at one end facing the air outlet passage 14, respectively, so as to improve the sealing performance of the valve core 2 in blocking the air inlet passage 11 and the air outlet passage 14 when the valve core 2 is in the preset first position and the preset second position. The sealing members include but are not limited to rubber rings, silicone pads, etc.

[0064] It is worth noting that the air valve 1000 can be applied to the gas distribution device of the pneumatic comfort system, including but not limited to one or more gas distribution devices applied to the pneumatic massage system, the pneumatic side support system and the pneumatic lumbar support system, and the corresponding pneumatic comfort system includes but is not limited to the field of smart devices such as car seats, massage seats, airbag beds, etc.

[0065] Among them, when the air valve 1000 is applied to a pneumatic comfort system, the air inlet channel 11 on the valve body 1 is ventilated and connected to the air source device, while the air delivery channel 13 is ventilated and connected to the air bag, and the exhaust channel 14 can be directly connected to the atmospheric environment.

[0066] The present utility model also provides a pneumatic comfort system embodiment, specifically at least one of a pneumatic massage system, a pneumatic lumbar support system, and a pneumatic wing support system. The pneumatic comfort system includes an air source device, a gas distribution device, and an air bag. The air bag is connected to the air source device through the gas distribution device. The gas distribution device includes the air valve 1000. The structure and function of the air valve 1000 can be referred to the above embodiment, and will not be described here one by one. Among them, the air inlet channel 11 of the air valve 1000 is connected to the air source device, and the air delivery channel 13 is connected to the air bag.

[0067] It is worth noting that the air source device includes but is not limited to: an air pump, an air compressor, an air storage container or a pump-valve integrated device. The air bag includes but is not limited to a massage air bag, a waist support air bag, a side support air bag, etc.

[0068] In order to facilitate understanding of the working logic of the air valve 1000 in the pneumatic comfort system, the following example is given, where the air source device connected to the air inlet channel 11 is designated as an air pump, and the air bag connected to the air delivery channel 13 is controlled by the air valve 1000 to realize the inflation and deflation work, and the corresponding air guide section has the following specific introduction functions:

[0069] Gas delivery stage: the valve core 2 closes the exhaust port 141 of the exhaust channel 14, the air pump is connected to the air inlet channel 11, the air pump supplies gas, and the gas enters the air bag from the air inlet channel 11 through the first air guide section 111, the fluid channel between the valve core 2 and the conduction chamber 12, the second air guide section 131, and the air delivery channel 13. During the entire gas delivery stage, the presence of the first air guide section 111 and the second air guide section 131 allows the gas to flow smoothly through the air valve 1000 during the entire inflation stage, avoiding the generation of vortices, significantly improving the inflation speed of the air bag, and also avoiding the noise caused by vortices that affects the user experience of the device using the air valve 1000.

[0070] Exhaust stage: the valve core 2 closes the air inlet port 112 of the air inlet channel 11, and the gas filled in the air bag flows from the air delivery channel 13 through the second air guide section 131, the conduction chamber 12, and the exhaust channel 14 to be discharged to the external environment. During the entire exhaust process, the existence of the second air guide section 131 allows the gas flowing through the air valve 1000 to flow smoothly during the entire inflation stage, avoiding the generation of vortices, significantly increasing the deflation speed of the air bag, and also avoiding the noise caused by vortices affecting the user experience of the device using the air valve 1000.

[0071] It should be noted that the preferred embodiments of the utility model are given in the specification and drawings of the utility model, but the utility model can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not used as additional restrictions on the content of the utility model. The purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as the scope of the description of the utility model; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the utility model.

Claims

1. A gas valve, characterized in that: Including valve body; The valve body is provided with a conduction chamber and an air intake channel, an air delivery channel and an air exhaust channel respectively connected to the conduction chamber; a valve core is provided in the conduction chamber; The gas valve has a gas supply state in which the valve core closes the port of the exhaust channel and connects the intake channel with the gas supply channel, and a gas exhaust state in which the valve core closes the port of the intake channel and connects the exhaust channel with the gas supply channel; The air intake passage has a first air guide section whose inner diameter gradually decreases along the air intake direction, so that the gas can smoothly enter the conduction chamber from the air intake passage.

2. The gas valve according to claim 1, characterized in that: The inner surface of the first air guiding segment includes at least one of an arcuate surface and an inclined straight surface.

3. The gas valve according to claim 1, characterized in that: The first air guiding section is connected to the conduction chamber.

4. The gas valve according to claim 1, characterized in that: The valve body is provided with a coil, and the valve core is displaced by the excitation of the coil to close the port of the intake passage or the port of the exhaust passage.

5. The gas valve according to claim 4, characterized in that: A reset element is provided; the reset element causes the valve core to normally close the port of the exhaust passage or normally close the port of the intake passage.

6. The gas valve according to claim 1, characterized in that: The valve body comprises a first valve body and a second valve body which are sealed and connected to each other. The conduction chamber, the gas transmission channel and the exhaust channel are arranged in the first valve body, and the air intake channel is arranged in the second valve body.

7. The gas valve according to any one of claims 1 to 6, characterized in that: The gas delivery channel has a second gas guide section whose inner diameter gradually decreases along the gas intake direction in the gas delivery state, so that the gas can smoothly flow in and out between the exhaust channel and the conduction chamber.

8. The gas valve according to claim 7, characterized in that The inner surface of the second air guiding segment includes at least one of an arcuate surface and an inclined straight surface.

9. The gas valve according to claim 7, characterized in that: The second air guiding section is connected to the conduction chamber.

10. A pneumatic comfort system, characterized in that: It comprises a gas source device, a gas distribution device and an air bag, wherein the air bag is connected to the gas source device via the gas distribution device, and the gas distribution device comprises the gas valve according to any one of claims 1-9.

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