Fluid dispensing device and pneumatic comfort system

Abstract

This utility model relates to the field of fluid control technology, and in particular to a fluid distribution device and a pneumatic comfort system. The fluid distribution device includes an air seat, a first air valve, and a second air valve. The air seat has an inlet channel, an inflation channel, a deflation channel, and a connecting channel, all of which are fluidly connected to the connecting channel. The first air valve is located on the air seat and controls the opening and closing of the inlet channel and the connecting channel. The second air valve is located on the air seat and controls the opening and closing of the deflation channel and the connecting channel. Through this method, during inflation, the airflow can be rapidly supplied to the gas-using equipment sequentially through the inlet channel, the connecting channel, and the inflation channel. During deflation, the gas flows rapidly from the inflation channel through the connecting channel and the deflation channel, eliminating the need for the gas to flow through the gap between the valve core and the valve body. This shortens the inflation and deflation path, enables high-flow inflation and deflation, and improves inflation and deflation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fluid control technology, and in particular to a fluid distribution device and a pneumatic comfort system. Background Technology

[0002] In pneumatic comfort systems, air valves, such as solenoid valves, control the inflation and deflation of air bags or regulate air pressure in the air passages. A single air valve typically has only two states: inflation and deflation. However, sometimes it's necessary to maintain pressure in the air bag to achieve pneumatic support. Related technologies use two air valves connected in series to achieve these three states: inflation, deflation, and pressure maintenance.

[0003] In this type of valve assembly with two valves connected in series, the two valves are typically connected sequentially along their length. Furthermore, the inlet and outlet of the valve assembly are located on the two valves respectively. For example, the inlet and outlet are usually located at the same end of the same valve, while the outlet is located at the head or tail of the other valve; or, the outlet and outlet are located at the same end of the same valve, while the outlet is located at the head or tail of the other valve. This results in the airflow needing to pass through the gap between the valve core and valve body of at least one valve when the valve assembly is venting or venting. The long venting or venting path and the small gap between the valve core and valve body limit the venting or venting flow rate, leading to low venting or venting efficiency and making it difficult to meet the rapid inflation and deflation response requirements of the air bag. Utility Model Content

[0004] The present invention aims to provide a fluid distribution device and a pneumatic comfort system, so as to at least improve the problem of low inflation and deflation efficiency of the fluid distribution device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, this utility model provides a fluid distribution device, which includes an air seat, a first air valve, and a second air valve. The air seat is provided with an air inlet channel, an air filling channel, an air venting channel, and a connecting channel, wherein the air inlet channel, the air filling channel, and the air venting channel are respectively in fluid communication with the connecting channel. The first air valve is disposed on the air seat and is used to control the connection between the air inlet channel and the connecting channel. The second air valve is disposed on the air seat and is used to control the connection between the air venting channel and the connecting channel.

[0006] In some embodiments, the air seat is provided with an air inlet, a first chamber, and a first connection port; the air inlet channel is in fluid communication with the first chamber through the air inlet, and the first chamber is in fluid communication with the connection channel through the first connection port; the first air valve is used to control the opening and closing of the air inlet.

[0007] In some embodiments, the first air valve includes a first valve seat, a first valve core, and a first actuator. The first valve seat is sealed to the air seat, and the first valve core and the first actuator are disposed on the first valve seat. The first actuator is used to drive the first valve core to open or close the air inlet.

[0008] In some embodiments, the first air valve includes a first reset member, which is used to actuate the first valve core to normally close or open the air inlet.

[0009] In some embodiments, the gas seat is provided with a vent, a second chamber, and a second connection port; the vent channel is in fluid communication with the second chamber through the vent, and the second chamber is in fluid communication with the connection channel through the second connection port; the second gas valve is used to control the opening and closing of the vent.

[0010] In some embodiments, the second air valve includes a second valve seat, a second valve core, and a second actuator. The second valve seat is sealed to the air seat, and the second valve core and the second actuator are disposed on the second valve seat. The second actuator is used to drive the second valve core to open or close the vent.

[0011] In some embodiments, the second air valve includes a second reset member, which is used to actuate the second valve core to normally close or open the vent.

[0012] In some embodiments, the fluid distribution device includes a silencing element disposed in the venting channel.

[0013] In some embodiments, the first air valve and the second air valve are located on the same side of the air seat.

[0014] Secondly, this utility model provides a pneumatic comfort system, which includes an air source device, an air bag, and a fluid distribution device as described in any embodiment of the first aspect. The air source device is fluidly connected to the air bag through the fluid distribution device; wherein the air source device is fluidly connected to the air intake channel, and the air bag is fluidly connected to the inflation channel.

[0015] The fluid distribution device of this utility model embodiment is provided with a connecting channel on the gas seat, and an air inlet channel, an inflation channel, and an inflation channel respectively connected to the connecting channel. A first air valve is provided to control the opening and closing of the air inlet channel and the connecting channel, and a second air valve is provided to control the opening and closing of the inflation channel and the connecting channel. Thus, during inflation, the first air valve controls the connection between the air inlet channel and the connecting channel, and the airflow can be quickly supplied to the gas-using equipment in sequence through the air inlet channel, the connecting channel, and the inflation channel. During inflation, the gas flows from the inflation channel through the connecting channel and the inflation channel for rapid deflation. The gas does not need to flow through the gap between the valve core and the valve body, which helps to shorten the inflation and deflation path, achieve large-flow inflation and deflation, and improve inflation and deflation efficiency.

[0016] Furthermore, by placing the first and second air valves on the same side of the air seat, the problem of the long length of the air valve assembly is improved; when multiple fluid distribution devices are assembled side by side into a valve module, the size of the valve module along the length of the fluid distribution device is shortened.

[0017] The pneumatic comfort system of this utility model uses the above-mentioned fluid distribution device to control the inflation, deflation and pressure holding of the air bag, improve the inflation and deflation efficiency, meet the response requirements of the air bag for rapid inflation and deflation, and enhance the pneumatic comfort effect.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a schematic diagram of the structure of the fluid distribution device according to an embodiment of the present invention; Figure 2 This is an exploded view of the fluid distribution device according to an embodiment of the present invention; Figure 3 This is a cross-sectional view of the fluid distribution device according to an embodiment of the present invention; Figure 4 This is another cross-sectional view of the fluid distribution device according to an embodiment of the present invention; Figure 5 This is another exploded view of the fluid distribution device according to an embodiment of the present invention; Figure 6This is another cross-sectional view of the fluid distribution device according to an embodiment of the present invention.

[0021] The reference numerals in the detailed embodiments are as follows: 100. Fluid distribution device; 1. Air seat; 11. Air intake channel; 111. Air inlet; 112. First connection port; 113. First groove; 114. First sealing groove; 12. Inflation channel; 13. Vent channel; 131. Vent port; 132. Second connection port; 133. Second groove; 134. Second sealing groove; 14. Connecting channel; 15. Mounting slot; 2. First air valve; 21. First valve seat; 211. First opening; 212. First flange; 22. First valve core; 23. First actuator; 24. First reset element; 25. First sealing ring; 3. Second air valve; 31. Second valve seat; 311. Second opening; 312. Second flange; 32. Second valve core; 33. Second actuator; 34. Second reset element; 35. Second sealing ring; 4. Silencing components; a. First chamber; b. Second chamber. Detailed Implementation

[0022] To facilitate understanding of this utility model, it will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model. 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 may be one or more intervening elements between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or there may be one or more intervening elements between them.

[0023] 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 be limiting of 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.

[0024] In the description of the embodiments of this utility model, 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 this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0025] In the description of the embodiments of this utility model, 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 therefore should not be construed as limiting the scope of protection of this utility model. In the description of the embodiments of this utility model, "multiple" means two or more, unless otherwise explicitly defined.

[0026] 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 scope of 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.

[0027] 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.

[0028] Firstly, please refer to Figure 1 This utility model provides a fluid distribution device 100. The fluid distribution device 100 includes an air seat 1, a first air valve 2 and a second air valve 3, which are disposed on the air seat 1.

[0029] The fluid distribution device 100 can be controlled to be in an inflated state by the first air valve 2, and to be in a deflated state by the second air valve 3. The fluid distribution device 100 can also be controlled to be in a pressure-holding state by the first air valve 2 and the second air valve 3 together, so that the fluid distribution device 100 has inflated, pressure-holding and deflated states.

[0030] The fluid distribution device 100 can be used in a pneumatic comfort system to fluidly connect the air source device and the device to be inflated in the pneumatic comfort system, and to control the inflation, deflation and pressure maintenance of the device to be inflated. The device to be inflated can be an air bag, thereby realizing the inflation, deflation and pressure maintenance of the air bag.

[0031] For the gas seat 1 mentioned above, please refer to Figures 2 to 4 The air seat 1 is provided with an air inlet channel 11, an inflation channel 12, a deflation channel 13, and a connecting channel 14. The air inlet channel 11, inflation channel 12, and deflation channel 13 are all fluidly connected to the connecting channel 14. When using the pneumatic comfort system, the air inlet channel 11 is used to fluidly connect to the air source device, and the inflation channel 12 is used to fluidly connect to the device to be inflated. An air inlet nozzle extends from the air seat 1, fluidly connected to the air inlet channel 11, to facilitate connection to the air source device via an air pipe; and an inflation nozzle extends from the air seat 1, fluidly connected to the inflation channel 12, to facilitate connection to the device to be inflated via an air pipe. A first air valve 2 is located on the air seat 1 and is used to control the opening and closing of the air inlet channel 11 and the connecting channel 14; a second air valve 3 is located on the air seat 1 and is used to control the opening and closing of the deflation channel 13 and the connecting channel 14.

[0032] By controlling the opening and closing of the air inlet channel 11 and the air outlet channel 13 with the connecting channel 14 through the first air valve 2 and the second air valve 3 respectively, inflation, deflation, and pressure holding can be achieved. For example, when the first air valve 2 controls the connection between the air inlet channel 11 and the connecting channel 14, and the second air valve 3 controls the disconnection between the air outlet channel 13 and the connecting channel 14, gas can flow into the inflation channel 12 sequentially from the air inlet channel 11 and the connecting channel 14, thus achieving inflation; when the first air valve 2 controls the disconnection between the air inlet channel 11 and the connecting channel 14, and the second air valve 3 controls the connection between the air outlet channel 13 and the connecting channel 14, gas can flow into the air outlet channel 13 sequentially from the inflation channel 12 and the connecting channel 14, thus achieving deflation; when the first air valve 2 controls the disconnection between the air inlet channel 11 and the connecting channel 14, and the second air valve 3 controls the disconnection between the air outlet channel 13 and the connecting channel 14, gas cannot flow into the air outlet channel 13 from the inflation channel 12, nor can it flow into the inflation channel 12 from the air inlet channel 11, thus achieving pressure holding.

[0033] Regarding the first air valve 2 mentioned above, which controls the opening and closing of the air intake channel 11 and the connecting channel 14, please refer to some embodiments. Figures 2 to 4The gas seat 1 has an air inlet 111, a first chamber a, and a first connection port 112. A first air valve 2 is located on the gas seat 1 and sealed to the first chamber a. An air inlet channel 11 is in fluid communication with the first chamber a through the air inlet 111, and the first chamber a is in fluid communication with a connecting channel 14 through the first connection port 112. The first air valve 2 controls the opening and closing of the air inlet 111. Exemplarily, the first chamber a includes a first groove 113 located on the gas seat 1. The air inlet 111 extends to the bottom surface of the first groove 113, and the first connection port 112 extends to the side wall of the first groove 113. The first air valve 2 is sealed to the side of the gas seat 1 where the first groove 113 is located, and the contact surface between the first air valve 2 and the gas seat 1 surrounds the first groove 113, thereby sealing the first air valve 2 with the first groove 113 on the gas seat 1 to form a sealed, conductive chamber in the first chamber a. When the first air valve 2 opens the air inlet 111, the air intake channel 11 is in fluid communication with the first chamber a through the air inlet 111, and the first chamber a is in fluid communication with the connecting channel 14 through the first connecting port 112, thereby achieving fluid communication between the air intake channel 11 and the connecting channel 14; when the first air valve 2 closes the air inlet 111, the air intake channel 11 and the connecting channel 14 are disconnected.

[0034] In some embodiments, please refer to Figure 5 and Figure 6 The first valve 2 includes a first valve seat 21, a first valve core 22, and a first actuator 23. The first valve seat 21 is sealed to the air seat 1. The first valve core 22 and the first actuator 23 are disposed on the first valve seat 21. The first actuator 23 is used to drive the first valve core 22 to open or close the air inlet 111. Exemplarily, one end of the first valve seat 21 has a first opening 211 and a first flange 212 surrounding the first opening 211. The first flange 212 is sealed to the air seat 1, thereby sealing the first valve seat 21 with the air seat 1. The contact surface between the first valve seat 21 and the air seat 1 surrounds the first groove 113. The first opening 211 of the first valve seat 21 corresponds to the first groove 113. Optionally, the first actuator 23 is an electromagnetic coil wound around the first valve seat 21. The first actuator 23 is used to generate an electromagnetic field when energized to excite the first valve core 22 to move relative to the first valve seat 21, so as to close or open the air inlet 111. Optionally, the bottom surface of the first groove 113 is provided with a crater structure that is in fluid communication with the air inlet 111, thereby enhancing the sealing effect of the first valve core 22 on the air inlet 111 when it closes the air inlet 111.

[0035] In some embodiments, please refer to Figure 6The first air valve 2 also includes a first reset member 24, which actuates the first valve core 22 to normally close or open the air inlet 111. Exemplarily, one end of the first reset member 24 abuts against the side of the first valve core 22 opposite to the air inlet 111, and the other end abuts against the inner wall of the first valve seat 21. The first reset member 24 is in a compressed state, thus possessing an elastic force that drives the first valve core 22 toward the air inlet 111. This ensures that when the first actuator 23 stops driving the first valve core 22, the first valve core 22 is always driven by the first reset member 24 to close the air inlet 111. In this way, the first reset member 24 drives the first valve core 22 to normally close the air inlet 111. When the fluid distribution device 100 maintains pressure on or depressurizes the air bag, the first actuator 23 can stop working to reduce energy consumption. Alternatively, one end of the first reset member 24 abuts against the side of the first valve core 22 facing the air inlet 111, and the other end abuts against the air seat 1, with the first reset member 24 in a compressed state. This ensures that when the first actuator 23 stops driving the first valve core 22, the first valve core 22 is always driven by the first reset member 24 to open the air inlet 111. In this way, the first reset member 24 drives the first valve core 22 to normally open the air inlet 111, and when the fluid distribution device 100 inflates the air bag, the first actuator 23 can stop working to reduce energy consumption. Optionally, the first reset member 24 can be a spring or a spring sheet.

[0036] Optionally, the first valve seat 21 is snap-fitted to the gas seat 1 or connected by screws. See also: [link to relevant documentation] in some embodiments. Figure 2 , Figure 5 and Figure 6 The first air valve 2 also includes a first sealing ring 25, which is sandwiched between the air seat 1 and the first valve seat 21, and surrounds the first groove 113. After the first valve seat 21 is fixed to the air seat 1, the first sealing ring 25 enhances the sealing effect between the first valve seat 21 and the air seat 1, making the first chamber a a sealed conductive chamber, ensuring fluid communication between the air inlet 111 and the first connection port 112 during inflation. Optionally, the air seat 1 is provided with a first sealing groove 114, which surrounds the first groove 113. The first sealing ring 25 is disposed in the first sealing groove 114 and protrudes from the first sealing groove 114. The first sealing groove 114 limits the position of the first sealing ring 25, enhancing the reliability of the first sealing ring 25 in sealingly connecting the first valve seat 21 to the air seat 1. Optionally, the first sealing ring 25 is a rubber ring.

[0037] Regarding the second air valve 3 mentioned above, which controls the opening and closing of the venting channel 13 and the connecting channel 14, please refer to some embodiments. Figures 2 to 4The gas seat 1 is provided with a vent 131, a second chamber b, and a second connection port 132. A second gas valve 3 is disposed on the gas seat 1 and sealed to the second chamber b. A venting channel 13 is in fluid communication with the second chamber b through the vent 131, and the second chamber b is in fluid communication with a connecting channel 14 through the second connection port 132. The second gas valve 3 is used to control the opening and closing of the vent 131. Exemplarily, the second chamber b includes a second groove 133 disposed on the gas seat 1, with the vent 131 extending to the bottom surface of the second groove 133 and the second connection port 132 extending to the side wall of the second groove 133. The second gas valve 3 is sealed to the side of the gas seat 1 where the second groove 133 is located, and the contact surface between the second gas valve 3 and the gas seat 1 surrounds the second groove 133, thereby sealing the second gas valve 3 with the second groove 133 on the gas seat 1 to form a sealed, conductive chamber in the second chamber b. When the second air valve 3 opens the vent 131, the vent passage 13 is in fluid communication with the second chamber b through the vent 131, and the second chamber b is in fluid communication with the connecting passage 14 through the second connecting port 132, thus achieving fluid communication between the vent passage 13 and the connecting passage 14; when the second air valve 3 closes the vent 131, the vent passage 13 and the connecting passage 14 are disconnected.

[0038] In some embodiments, please refer to Figure 5 and Figure 6 The second valve 3 includes a second valve seat 31, a second valve core 32, and a second actuator 33. The second valve seat 31 is sealed to the gas seat 1. The second valve core 32 and the second actuator 33 are disposed on the second valve seat 31. The second actuator 33 is used to drive the second valve core 32 to open or close the vent port 131. Exemplarily, one end of the second valve seat 31 has a second opening 311 and a second flange 312 surrounding the second opening 311. The second flange 312 is sealed to the gas seat 1, thereby sealing the second valve seat 31 with the gas seat 1. The contact surface between the second valve seat 31 and the gas seat 1 surrounds the second groove 133. The second opening 311 of the second valve seat 31 corresponds to the second groove 133. Optionally, the second actuator 33 is an electromagnetic coil wound around the second valve seat 31. When energized, the second actuator 33 generates an electromagnetic field to excite the second valve core 32 to move relative to the second valve seat 31, thereby closing or opening the vent port 131. Optionally, the bottom surface of the second groove 133 is provided with a crater structure that is in fluid communication with the vent 131, thereby enhancing the sealing effect of the second valve core 32 on the vent 131 when it closes the vent 131.

[0039] In some embodiments, please refer to Figure 6The second valve 3 also includes a second reset member 34, which actuates the second valve core 32 to normally close or open the vent port 131. Exemplarily, one end of the second reset member 34 abuts against the side of the second valve core 32 away from the vent port 131, and the other end abuts against the inner wall of the second valve seat 31. The second reset member 34 is in a compressed state, thus possessing an elastic force that drives the second valve core 32 toward the vent port 131. This ensures that when the second actuator 33 stops driving the second valve core 32, the second valve core 32 remains closed by the second reset member 34. In this way, the second reset member 34 drives the second valve core 32 to normally close the vent port 131. When the fluid distribution device 100 is pressurizing or inflating the air bag, the second actuator 33 can stop working to reduce energy consumption. Alternatively, one end of the second reset member 34 abuts against the side of the second valve core 32 facing the vent 131, and the other end abuts against the air seat 1, with the second reset member 34 in a compressed state. This ensures that when the second actuator 33 stops driving the second valve core 32, the second valve core 32 is always driven by the second reset member 34 to open the vent 131. In this way, the second reset member 34 drives the second valve core 32 to normally open the vent 131, and when the fluid distribution device 100 vents the air bag, the second actuator 33 can stop working to reduce energy consumption. Optionally, the second reset member 34 is a spring or a spring sheet.

[0040] Optionally, the second valve seat 31 is snap-fitted to the gas seat 1 or connected by screws. See also: [link to relevant documentation] in some embodiments. Figure 2 , Figure 5 and Figure 6 The second air valve 3 also includes a second sealing ring 35, which is sandwiched between the air seat 1 and the second valve seat 31, and surrounds the second groove 133. After the second valve seat 31 is fixed to the air seat 1, the second sealing ring 35 enhances the sealing effect between the second valve seat 31 and the air seat 1, making the second chamber b a sealed conductive chamber, ensuring fluid communication between the second connection port 132 and the vent port 131 when venting. Optionally, the air seat 1 is provided with a second sealing groove 134, which surrounds the second groove 133. The second sealing ring 35 is disposed in the second sealing groove 134 and protrudes from the second sealing groove 134. The second sealing groove 134 limits the position of the second sealing ring 35, enhancing the reliability of the second sealing ring 35 in sealingly connecting the second valve seat 31 to the air seat 1. Optionally, the second sealing ring 35 is a rubber ring.

[0041] In some embodiments, please refer to Figure 4 The fluid distribution device 100 also includes a silencer 4, which is disposed in the venting channel 13 to reduce noise from the airflow discharged through the venting channel 13. For example, the silencer 4 covers the port of the venting channel 13; please refer to [reference needed]. Figure 2The gas seat 1 is provided with a mounting groove 15. Specifically, the mounting groove 15 is located at the end of the venting channel 13 or at the port of the venting channel 13. The silencer 4 is snapped into the mounting groove 15, so that the gas discharged from the venting channel 13 flows through the silencer 4 for sound absorption and noise reduction, thereby reducing the noise of the exhaust from the venting channel 13. It is understood that the silencer 4 is permeable to gas. Optionally, the silencer 4 is a PE sintered block, sound-absorbing cotton, sponge, etc. Optionally, the side wall of the mounting groove 15 opposite to the venting channel 13 and the wall adjacent to the side wall have openings, so that the venting channel 13 can communicate with the outside to realize exhaust, and facilitate the silencer 4 to be embedded in or removed from the mounting groove 15. Optionally, the silencer 4 is bonded to the inner wall of the mounting groove 15.

[0042] Understandably, by sealing the second valve seat 31 with the gas seat 1, the gas discharged from the vent 131 flows out through the vent channel 13 and passes through the silencer 4, further improving the problem of high venting noise in the fluid distribution device 100. In this embodiment of the fluid distribution device 100, during inflation, the first air valve 2 opens the air inlet 111 while the second air valve 3 closes the air outlet 131. Gas sequentially enters the device to be inflated through the air inlet channel 11, the connecting channel 14, and the inflation channel 12. The gas does not need to enter the first air valve 2, i.e., it does not need to flow through the gap between the first valve core 22 and the first valve seat 21 of the first air valve 2, which helps to shorten the inflation path, increase the inflation flow rate, and improve inflation efficiency. During deflation, the first air valve 2 closes the air inlet 111 while the second air valve 3 opens the air outlet 131. Gas flows out of the device to be inflated sequentially through the inflation channel 12, the connecting channel 14, and the deflation channel 13. The gas does not need to enter the second air valve 3, i.e., it does not need to flow through the gap between the second valve core 32 and the second valve seat 31 of the second air valve 3, which helps to shorten the deflation path, increase the gas flow rate, and improve deflation efficiency. Thus, rapid inflation and deflation control of the device to be inflated is achieved. When in the pressure holding state, the first air valve 2 closes the air inlet 111 and the second air valve 3 closes the air outlet 131, so the gas in the device to be inflated cannot be discharged, thus keeping the device to be inflated in the pressure holding state.

[0043] In a preferred embodiment, the second air valve 3 and the first air valve 2 are located on the same side of the air seat 1, that is, the first air valve 2 and the second air valve 3 are arranged side by side. For details, please refer to [link to relevant documentation]. Figures 1 to 6As shown, the first groove 113 and the second groove 133 are located on the same side of the air seat 1. In some embodiments, the first groove 113 and the second groove 133 are located at the same level. Optionally, the connecting channel 14 is a horizontal channel located inside the air seat 1. The first connecting port 112 extends from the side of the connecting channel 14 to the first groove 113. The air intake channel 11 extends from the horizontal direction and is located in the air seat 1, and connects to the first groove 113 through the air intake port 111. The inflation channel 12 extends from the side of the connecting channel 14 opposite to the first connecting port 112 and connects to the inflation channel 12. The second connecting port 132 extends from the side of the connecting channel 14 and connects to the second groove 133, and the first connecting port 112 and the second connecting port 132 are located on the same side of the connecting channel 14. The deflation channel 13 extends from the horizontal direction and is located in the air seat 1, and connects to the second groove 133 through the deflation port 131. The first air valve 2 and the second air valve 3 are respectively sealed and connected to the air seat 1 in relation to the first groove 113 and the second groove 133, so that the first air valve 2 and the second air valve 3 are located on the same side of the air seat 1, and the overall structure is compact.

[0044] Compared to the longer length of the fluid distribution device 100 caused by cascading two air valves, this fluid distribution device 100, by arranging the first air valve 2 and the second air valve 3 side by side, reduces its length. When multiple fluid distribution devices 100 are assembled side by side into a valve module, the dimension of the valve module along the length of the fluid distribution device 100 is shortened. Furthermore, it allows the charging and decharging airflow to bypass the gap between the valve core and valve seat of any air valve, enabling rapid charging and decharging with a large flow rate.

[0045] Secondly, this utility model provides a pneumatic comfort system, including a pneumatic massage system and a pneumatic support system, such as a pneumatic massage system, a pneumatic lumbar support system, and a pneumatic side support system. The pneumatic comfort system includes an air source device (not shown), an air bag (not shown), and the aforementioned fluid distribution device 100. The air source device is fluidly connected to the air bag through the fluid distribution device 100. The air source device can be, but is not limited to, an air pump or an air compressor. The air source device is fluidly connected to the air inlet channel 11 of the fluid distribution device 100, such as through an air pipe. The inflation channel 12 of the fluid distribution device 100 is fluidly connected to the air bag, such as through an air pipe, and the inflation channel 12 can connect to multiple air bags simultaneously or a single air bag. The deflation channel 13 of the fluid distribution device 100 can be connected to the atmospheric environment or to an airflow recovery device, such as a negative pressure generator or an air tank. The air source device is used to supply air to the air bag, and the fluid distribution device 100 is used to control the inflation, deflation, and pressure maintenance of the air bag.

[0046] In the pneumatic comfort system of this embodiment, the fluid distribution device 100 controls the connection between the air source device and the air bag, thereby controllably supplying air to the air bag and causing it to inflate. The fluid distribution device 100 also connects the air bag to the external environment, causing it to deflate and contract. When the air path between the air bag and both the air source device and the external environment is disconnected, the air bag maintains pressure. Through the expansion, contraction, and pressure maintenance of the air bag, pneumatic massage and pneumatic support can be achieved. The pneumatic comfort system employs the aforementioned fluid distribution device 100 to improve inflation and deflation efficiency, meeting the rapid inflation and deflation response requirements of the air bag and enhancing the massage and support effects.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, 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 this utility model as described above. For the sake of brevity, they are not provided in detail; although this utility model 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 this utility model.

Claims

1. A fluid dispensing device, characterized by, include: The air seat is provided with an air inlet channel, an inflation channel, a deflation channel and a connecting channel, wherein the air inlet channel, the inflation channel and the deflation channel are respectively in fluid communication with the connecting channel; A first air valve is disposed on the air seat, and the first air valve is used to control the opening and closing of the air intake channel and the connecting channel; A second air valve is provided on the air seat, and the second air valve is used to control the opening and closing of the venting channel and the connecting channel.

2. The fluid distribution device according to claim 1, characterized in that, The gas seat is provided with an air inlet, a first chamber, and a first connection port; The air intake channel is in fluid communication with the first chamber through the air intake port, and the first chamber is in fluid communication with the connection channel through the first connection port; The first air valve is used to control the opening and closing of the air inlet.

3. The fluid distribution device according to claim 2, characterized in that, The first air valve includes a first valve seat, a first valve core, and a first actuator. The first valve seat is sealed to the air seat, and the first valve core and the first actuator are disposed on the first valve seat. The first actuator is used to drive the first valve core to open or close the air inlet.

4. The fluid distribution device according to claim 3, characterized in that, The first air valve includes a first reset element, which is used to actuate the first valve core to normally close or open the air inlet.

5. The fluid distribution device according to claim 1, characterized in that, The gas seat is provided with a vent, a second chamber, and a second connection port; The venting channel is in fluid communication with the second chamber through the vent, and the second chamber is in fluid communication with the connecting channel through the second connecting port; The second air valve is used to control the opening and closing of the vent.

6. The fluid distribution device according to claim 5, characterized in that, The second air valve includes a second valve seat, a second valve core, and a second actuator. The second valve seat is sealed to the air seat, and the second valve core and the second actuator are disposed on the second valve seat. The second actuator is used to drive the second valve core to open or close the vent.

7. The fluid distribution device according to claim 6, characterized in that, The second air valve includes a second reset element, which is used to actuate the second valve core to normally close or open the vent.

8. The fluid distribution device according to claim 1, characterized in that, The fluid distribution device includes a silencing component, which is located in the venting channel.

9. The fluid distribution device according to any one of claims 1-8, characterized in that, The first air valve and the second air valve are located on the same side of the air seat.

10. A pneumatic comfort system characterized in that, It includes an air source device, an air bag, and a fluid distribution device as described in any one of claims 1 to 9, wherein the air source device is in fluid communication with the air bag through the fluid distribution device; wherein the air source device is in fluid communication with the air inlet channel, and the air bag is in fluid communication with the inflation channel.

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