Low pressure generator, pneumatic comfort system and intelligent equipment

Abstract

The utility model relates to the technical field of pneumatic comfort systems, in particular to a low-pressure generator, a pneumatic comfort system and intelligent equipment. The low-pressure generator comprises a generator body and a plurality of low-pressure ports; the generator body is provided with a first opening and a second opening; the low-pressure port is in fluid communication between the first opening and the second opening, and when gas flows from the first opening to the second opening, the air pressure at the low-pressure port is lower than the atmospheric pressure. Through the mode, the plurality of low-pressure ports can be in fluid communication with a plurality of external devices, for example, the plurality of low-pressure ports can be in fluid communication with a plurality of air bags, so that additional adapters do not need to be arranged, the production cost is reduced, the air leakage probability is reduced, and the sealing performance is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic comfort system technical field especially, relates to a low pressure generator, pneumatic comfort system and intelligent equipment. BACKGROUND

[0002] Pneumatic comfort system (for example: pneumatic massage system or pneumatic support system etc.) usually includes gas source device, fluid distribution device and the gas bag that is communicated with gas source device through fluid distribution device, and the gas bag is filled and exhausted by gas source device when working and fluid distribution device controls.

[0003] At present, when the gas bag is exhausted, the gas bag can be communicated with the low pressure generator through the fluid distribution device, and the gas bag is quickly exhausted by relying on the negative pressure of the low pressure generator, which not only improves the exhaust speed of the gas bag, but also makes the gas bag exhaust more completely, which is beneficial to improve the filling and exhausting frequency of the gas bag and increase the recharging travel of the gas bag.

[0004] However, the number of gas bags is usually multiple, in order to communicate multiple gas bags with the low pressure generator, the low pressure generator is usually connected with the gas bag by using an adapter, which not only increases the cost, but also increases the risk of gas leakage. SUMMARY

[0005] The utility model embodiment aims at providing a low pressure generator, pneumatic comfort system and intelligent equipment, which can at least improve the problem that the low pressure generator needs to be connected with multiple gas bags through an additional adapter.

[0006] The utility model embodiment adopts the following technical scheme to solve the above technical problem.

[0007] In the first aspect, the utility model provides a low pressure generator, which comprises a generator body and multiple low pressure ports, wherein the generator body is provided with a first opening and a second opening, the low pressure ports are in fluid communication between the first opening and the second opening, and the air pressure at the low pressure ports is lower than the atmospheric pressure when gas flows from the first opening to the second opening.

[0008] In some embodiments, the generator body is tubular, and multiple low pressure ports are arranged at intervals along the circumference of the generator body.

[0009] In some embodiments, the generator body is provided with a low pressure generating chamber, which is communicated between the first opening and the second opening, and the low pressure generating chamber comprises a first contraction chamber, one end of the first contraction chamber away from the first opening is in fluid communication with the low pressure port.

[0010] In some embodiments, the low-pressure generator further comprises a conducting portion, the conducting portion is provided with a conducting cavity, the generator body is provided with a conducting port, the conducting port fluidly connects the conducting cavity with the low-pressure generating chamber, and the low-pressure port fluidly connects with the conducting cavity.

[0011] In some embodiments, the low-pressure generating chamber comprises a diffusion chamber, the diffusion chamber fluidly connects with one end of the first converging chamber away from the first opening, a cross-sectional area of the diffusion chamber is greater than a cross-sectional area of the first converging chamber, and the low-pressure port fluidly connects with the diffusion chamber.

[0012] In some embodiments, the low-pressure generating chamber comprises a second converging chamber and a diverging chamber, the second converging chamber fluidly connects with one end of the diffusion chamber away from the first opening, and the diverging chamber fluidly connects with one end of the second converging chamber away from the first opening.

[0013] In some embodiments, the generator body comprises a converging cylinder portion and a nozzle, one end of the converging cylinder portion fluidly connects with the first opening, the other end of the converging cylinder portion is towards the second opening, and an inner space of the converging cylinder portion defines the first converging chamber; one end of the nozzle fluidly connects with the other end of the converging cylinder portion, the other end of the nozzle is towards the second opening, and the diffusion chamber is defined between an outer wall of the converging cylinder portion and the nozzle and an inner wall of the generator body.

[0014] In some embodiments, the low-pressure generator comprises a muffler, and the muffler is arranged at the first opening.

[0015] In the second aspect, the utility model embodiment provides a pneumatic comfort system, the pneumatic comfort system comprises a gas bag, a fluid distribution device and the low-pressure generator as any one of the above, the low-pressure port is fluidly connected with the gas bag through the fluid distribution device, and the fluid distribution device is used for controlling opening and closing of an air path between the low-pressure port and the gas bag.

[0016] In the third aspect, the utility model embodiment provides an intelligent device, and the intelligent device comprises the pneumatic comfort system.

[0017] The low-pressure generator, the pneumatic comfort system and the intelligent device provided by the utility model embodiment, the low-pressure generator comprises a plurality of low-pressure ports, and the plurality of low-pressure ports can be fluidly connected with a plurality of external devices, for example, fluidly connected with a plurality of gas bags, so that an additional adapter is not needed, production cost is reduced, air leakage probability is reduced, and sealing performance is enhanced.

[0018] Moreover, the generator body comprises a first contraction chamber, the flow rate of the gas increases when passing through the first contraction chamber, which is conducive to enhancing the negative pressure at the low-pressure port. The generator body comprises a diffusion chamber, when the gas is sprayed to the second opening in the form of a jet, the gas in the diffusion chamber is sprayed to the second opening in the process, which is conducive to enhancing the negative pressure at the low-pressure port. The generator body comprises a contraction cylinder and a nozzle, and the diffusion chamber is defined between the outer wall of the contraction cylinder and the nozzle and the inner wall of the generator body, so that the rapid airflow sprayed by the nozzle can more easily cause a negative pressure effect in the diffusion chamber, which is conducive to enhancing the negative pressure at the low-pressure port. The low-pressure generating chamber further comprises a second contraction chamber and an expansion chamber, and the second contraction chamber and the expansion chamber form a Laval tube to accelerate the gas, which is conducive to enhancing the negative pressure at the low-pressure port.

[0019] In addition, the first opening of the low-pressure generator is provided with a silencer, which is conducive to reducing the noise generated when the low-pressure generator inhales air from the outside environment through the first opening.

[0020] The pneumatic comfort system and the intelligent device of the embodiment of the present application are provided with the above low-pressure generator, which is conducive to improving the inflation and deflation frequency of the inflatable element in the pneumatic comfort system and the intelligent device and ensuring the travel of the re-inflation, enhancing the effect of pneumatic comfort adjustment, and reducing noise and production cost.

[0021] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented in accordance with the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute a limitation on the embodiments, and elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified, and the drawings do not constitute a proportional limitation.

[0023] Figure 1 is a structural schematic view of a low-pressure generator of an embodiment of the present application;

[0024] Figure 2 is Figure 1 is a sectional view of a low-pressure generator;

[0025] Figure 3 is a structural schematic view of a low-pressure generator of another embodiment of the present application;

[0026] Figure 4 is Figure 3 is a sectional view of a low-pressure generator;

[0027] Figure 5is a structural schematic diagram of a pneumatic comfort system according to an embodiment of the present application.

[0028] The reference signs in the detailed description are as follows:

[0029] 100, pneumatic comfort system;

[0030] 1, low pressure generator;

[0031] 11, generator body; 111, first opening; 112, second opening;

[0032] 113, low pressure generating chamber; 1131, first contraction chamber; 1132, diffusion chamber; 1133, second contraction chamber; 1134, expansion chamber;

[0033] 114, through port; 115, contraction cylinder portion; 116, nozzle;

[0034] 12, low pressure port;

[0035] 13, through portion; 131, through cavity;

[0036] 14, sound deadening member;

[0037] 2, fluid distribution device;

[0038] 21, air valve group; 211, air inlet; 212, inflation port; 213, air outlet;

[0039] 22, air inlet passage; 23, air outlet passage; 24, housing;

[0040] 3, air source device; 31, air inlet; 32, air outlet;

[0041] 4, air bag; 5, air reservoir. DETAILED DESCRIPTION

[0042] In order to facilitate understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween.

[0043] 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 application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of terms such as "comprise", "comprises", "comprising", "containing", "contains", "contain" or any other variation thereof is intended to cover a non-exclusive inclusion, such that these terms are used in their normal sense to cover a composition that can include, but is not limited to, an element or a combination of elements.

[0044] In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0045] In the description of the embodiments of the present application, the use of the terms "first", "second", and the like to qualify parts is merely for the convenience of distinguishing the corresponding parts, and unless otherwise stated, the above terms have no special meaning, and therefore cannot be understood as a limitation on the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.

[0046] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0047] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0048] In a first aspect, please refer to Figure 1 and Figure 2As shown, the utility model embodiment provides a low pressure generator 1, low pressure generator 1 includes generator body 11 and multiple low pressure ports 12;Generator body 11 is equipped with first opening 111 and second opening 112, low pressure port 12 is connected between first opening 111 and second opening 112, when gas flows from first opening 111 to second opening 112, low pressure port 12 generates negative pressure, that is, the air pressure at low pressure port 12 is lower than atmospheric pressure. Negative pressure refers to its true air pressure is lower than standard atmospheric pressure, that is, lower than 101.325 kilopascal, negative pressure is usually expressed as its true air pressure minus standard atmospheric pressure, for example, negative pressure can be-40 kilopascal, -20 kilopascal, -10 kilopascal, etc.

[0049] Exemplarily, generator body 11 can be tubular, and the openings at both ends thereof are first opening 111 and second opening 112 respectively, and low pressure port 12 can be arranged through the wall of generator body 11. Thus, the gas flowing from first opening 111 to second opening 112 can flow through low pressure port 12, and the flow rate of the gas flowing from first opening 111 to second opening 112 is greater than that of the gas in low pressure port 12, and the faster the flow rate, the smaller the pressure. Therefore, the air pressure of the gas flowing from first opening 111 to second opening 112 is smaller than that of the gas in low pressure port 12, so that the air pressure at low pressure port 12 is reduced and lower than atmospheric pressure, that is, negative pressure is generated.

[0050] For the above-mentioned gas flowing from first opening 111 to second opening 112, first opening 111 can be connected with a positive pressure air pump in fluid communication, and the gas can be introduced into first opening 111, or second opening 112 can be connected with a vacuum air pump in fluid communication, and the gas can be pumped out of second opening 112.

[0051] It should be noted that, in the utility model embodiment, the fluid sucked into first opening 111 is taken as an example of gas, and in other embodiments, the fluid can also be liquid, gas-liquid mixture, etc., which is not limited by the utility model.

[0052] In some embodiments, referring to Figure 1 and Figure 2 As shown, generator body 11 is tubular, and multiple low pressure ports 12 are arranged at intervals along the circumference of generator body 11. Since the multiple low pressure ports 12 are arranged at intervals along the circumference of generator body 11, the pipeline connected to each low pressure port 12 is divergent, and the pipelines are not easy to interfere with each other, which is conducive to shortening the distance between adjacent two low pressure ports 12 and increasing the number of low pressure ports 12. Alternatively, the number of low pressure ports 12 is three, and the included angle between adjacent two low pressure ports 12 is 120 degrees.

[0053] In other embodiments, referring to Figure 3 and Figure 4As shown, the low-pressure generator 1 further comprises a conducting portion 13, which is provided with a conducting cavity 131 and the low-pressure port 12, and the generator body 11 is provided with a conducting port 114, which fluidly connects the conducting cavity 131 and the low-pressure generating chamber 113, and the low-pressure port 12 fluidly connects the conducting cavity 131. The gas flowing from the first opening 111 to the second opening 112 flows through the conducting port 114, and the flow rate of the gas flowing from the first opening 111 to the second opening 112 is greater than that of the gas in the conducting port 114, and the faster the flow rate, the smaller the pressure. Therefore, the pressure of the gas flowing from the first opening 111 to the second opening 112 is smaller than that of the gas in the conducting port 114, and the low-pressure port 12 is in communication with the conducting port 114, so that the pressure at the low-pressure port 12 is reduced and lower than the atmospheric pressure, i.e. negative pressure is generated. The low-pressure port 12 is concentrated in the conducting portion 13, and compared with the pipe wall of the generator body 11, the low-pressure port 12 is more compact in position, which facilitates the connection of the low-pressure port 12 with the pipeline; the conducting portion 13 is arranged on one side of the generator body 11, and after the plurality of pipelines are connected with the low-pressure ports 12, the plurality of pipelines can be bundled together, which is conducive to improving the compactness of the low-pressure generator 1 and the plurality of pipelines, reducing the occupied volume, and facilitating the installation of the low-pressure generator 1 and the plurality of pipelines on the target device. Optionally, the conducting portion 13 is in the shape of a four-way pipe, one opening fluidly communicates with the conducting port 114, and the other three openings are the low-pressure ports 12.

[0054] In the prior art, a plurality of external devices are usually fluidly connected with the same low-pressure port 12 of the low-pressure generator 1 through an adapter. For example, a plurality of external devices are fluidly connected with the same low-pressure port 12 through an adapter such as a three-way pipe or a four-way pipe, which not only increases the cost but also increases the risk of fluid leakage due to excessive interfaces. In the embodiments of the present application, the low-pressure generator 1 comprises a plurality of low-pressure ports 12, which can be fluidly connected with a plurality of external devices, so that no additional adapter is needed, which is conducive to reducing the cost, enhancing the sealing performance, and reducing the risk of gas leakage.

[0055] In some embodiments, please refer to Figure 2 and Figure 4As shown, the generator body 11 is provided with a low-pressure generating chamber 113, which is in communication between the first opening 111 and the second opening 112. The low-pressure generating chamber 113 includes a first converging chamber 1131, which is in fluid communication with the low-pressure port 12 at an end away from the first opening 111. The first converging chamber 1131 is a chamber with a cross-sectional area gradually decreasing along the direction of fluid flow, which can be in the shape of a truncated cone. When the gas flows from the first opening 111 to the second opening 112 and passes through the first converging chamber 1131, the cross-sectional area of the chamber allowing the gas to pass through gradually decreases, and the flow rate of the gas increases, so that the gas pressure decreases when the gas passes through the first converging chamber 1131, thereby enhancing the negative pressure at the low-pressure port 12. It can be understood that the faster the gas flows through the first converging chamber 1131, the greater the negative pressure formed at the low-pressure port 12.

[0056] In some embodiments, referring to Figure 2 and Figure 4 As shown, the low-pressure generating chamber 113 further includes a diffusion chamber 1132, which is in fluid communication with the end of the first converging chamber 1131 away from the first opening 111. The cross-sectional area of the diffusion chamber 1132 is greater than that of the first converging chamber 1131. Exemplarily, the diffusion chamber 1132 is in the shape of a cylinder, the end of the first converging chamber 1131 away from the first opening 111 is in fluid communication with the diffusion chamber 1132, and the inner diameter of the diffusion chamber 1132 is greater than the inner diameter of the port of the end of the first converging chamber 1131 in fluid communication with the diffusion chamber 1132. When the gas flows from the first converging chamber 1131 to the diffusion chamber 1132, the cross-sectional area of the chamber allowing the gas to pass through suddenly increases, so that the gas is difficult to expand to the entire diffusion chamber 1132; and the flow rate of the gas is relatively large, and the gas is sprayed in the form of a jet to the second opening 112, and in the process, the gas in the diffusion chamber 1132 is sprayed to the second opening 112, so that the gas pressure in the diffusion chamber 1132 is reduced. In the embodiments of the present application, the low-pressure port 12 is in fluid communication with the first converging chamber 1131 through the diffusion chamber 1132, which can enhance the negative pressure at the low-pressure port 12 compared to the case where the low-pressure port 12 is directly in communication with the inner wall of the end of the first converging chamber 1131 away from the first opening 111.

[0057] In further embodiments, referring to Figure 2 and Figure 4As shown, the generator body 11 further comprises a convergent cylinder portion 115 and a nozzle 116. The convergent cylinder portion 115 is in the shape of a conical cylinder, and the convergent cylinder portion 115 is in fluid communication with the first opening 111 at the end with a larger opening, and the other end of the convergent cylinder portion 115 is directed towards the second opening 112, and the internal space of the convergent cylinder portion 115 defines a first convergent chamber 1131. The nozzle 116 is in the shape of a cylindrical cylinder, and one end of the nozzle 116 is in fluid communication with the end of the convergent cylinder portion 115 with a smaller opening, and the other end of the nozzle 116 is directed towards the second opening 112, so that the gas flowing out of the convergent cylinder portion 115 is guided and constrained by the nozzle 116 to form a jet gas flow. The diffusion chamber 1132 is defined between the outer wall of the convergent cylinder portion 115 and the nozzle 116 and the inner wall of the generator body 11, so that the jet gas flow emitted by the nozzle 116 can more easily cause a negative pressure effect in the diffusion chamber 1132, further enhancing the negative pressure at the low-pressure port 12.

[0058] In some embodiments, referring to Figure 2 and Figure 4 As shown, the low-pressure generating chamber 113 further comprises a second convergent chamber 1133 and a divergent chamber 1134, the second convergent chamber 1133 is in fluid communication with the end of the diffusion chamber 1132 away from the first opening 111, and the divergent chamber 1134 is in fluid communication with the end of the second convergent chamber 1133 away from the first opening 111. The second convergent chamber 1133 is a chamber with a cross-sectional area that gradually decreases along the direction of fluid flow, which can be in the shape of a truncated cone. The divergent chamber 1134 is a chamber with a cross-sectional area that gradually increases along the direction of fluid flow, which can be in the shape of a truncated cone. It can be understood that the second convergent chamber 1133 and the divergent chamber 1134 form a Laval tube, which accelerates the gas flowing out of the diffusion chamber 1132, increases the flow rate of the gas flowing through the low-pressure generator 1, and further enhances the negative pressure at the low-pressure port 12.

[0059] In some embodiments, referring to Figure 2 and Figure 4 As shown, the low-pressure generator 1 further comprises a sound-absorbing member 14 arranged at the first opening 111. The sound-absorbing member 14 can be a sound-absorbing sheet, sound-absorbing cotton, etc. By arranging the sound-absorbing member 14 at the first opening 111, the noise generated when the low-pressure generator 1 inhales air from the outside environment through the first opening 111 can be reduced, and the adverse effects on the surrounding personnel can be reduced. Optionally, the sound-absorbing member 14 is embedded in the inner wall of the first opening 111 and covers the first opening 111. It can be understood that the sound-absorbing member 14 has gas permeability.

[0060] In the second aspect, referring to Figure 5The utility model embodiment provides a pneumatic comfort system 100. Wherein, the pneumatic comfort system 100 can be pneumatic massage system, pneumatic support system etc., specifically, such as can be pneumatic massage system, pneumatic waist support system, pneumatic side wing support system, pneumatic soft and hard adjustment system at least one.

[0061] The pneumatic comfort system 100 includes gas source device 3, gas bag 4, fluid distribution device 2 and above-mentioned low pressure generator 1. Fluid distribution device 2 is used to control the on-off of the air release gas path between gas bag 4 and low pressure generator 1. Gas bag 4 is used to fill in gas, store gas and discharge gas, and expands and shrinks deformation when filling and discharging, so as to realize massage.

[0062] In some embodiments, the pneumatic comfort system 100 further includes gas source device 3, which can be used to provide continuous gas flow, and can be selected from but not limited to air pump, gas tank, air compressor. Fluid distribution device 2 is used to control the on-off of the inflation gas path between gas bag 4 and gas source device 3.

[0063] In some embodiments, gas source device 3 and fluid distribution device 2 can also be together as pump valve integrated structure. For example, gas source device 3 and fluid distribution device 2 are fixedly connected in one body.

[0064] For the above-mentioned gas source device 3, please refer to Figure 5 As shown, the gas source device 3 is provided with suction port 31 and exhaust port 32, the suction port 31 is used for gas inflow, the exhaust port 32 is used for gas outflow, the gas source device 3 works, and the gas is inhaled from the suction port 31, and then the compressed gas is discharged from the exhaust port 32 to supply gas. The suction port 31 of the gas source device 3 can be in fluid communication with the external environment, for example, directly communicated with the atmosphere, and the exhaust port 32 of the gas source device 3 can be in fluid communication with the gas bag 4 through the fluid distribution device 2 to supply gas for the gas bag 4.

[0065] For the above-mentioned gas flow from the first opening 111 to the second opening 112, there is another scheme, please refer to Figure 5As shown, the air inlet 31 is in fluid communication with the second opening 112, for example through a pipe. In this way, the low pressure driving of the low pressure generator 1 and the air supply for the air bag 4 are achieved by a single air source device 3, without the need to set up an additional air pump, reducing the number of air source devices 3, reducing production cost, and reducing energy consumption. When the air bag 4 is deflated, the gas flows into the low pressure generator 1 and is again delivered to the air bag 4 by the air source device 3, so that the gas circulates in the pneumatic comfort system 100, reducing gas consumption, and facilitating the reduction of air intake and exhaust of the pneumatic comfort system 100 to the external environment, not only reducing noise, but also reducing air flow caused by air intake and exhaust, reducing the adverse effects on the surrounding personnel. It can be understood that when the air source device 3 inhales through the second opening 112, the first opening 111 can be in fluid communication with the external environment, for example, directly with the atmosphere.

[0066] For the above-mentioned fluid distribution device 2, the air outlet 32 is in fluid communication with the air bag 4 through the fluid distribution device, and the fluid distribution device 2 is used to control the opening and closing of the air path between the air outlet 32 and the air bag 4. The low pressure port 12 is in fluid communication with the air bag 4 through the fluid distribution device 2, and the fluid distribution device 2 is used to control the opening and closing of the air path between the low pressure port 12 and the air bag 4. For example, please refer to Figure 5 As shown, the fluid distribution device 2 includes a gas valve group 21, which fluidly connects the air outlet 32 and the air bag 4, and the gas valve group 21 is used to control the opening and closing of the air path between the air outlet 32 and the air bag 4; the gas valve group 21 fluidly connects the low pressure port 12 and the air bag 4, and the gas valve group 21 is used to control the opening and closing of the air path between the low pressure port 12 and the air bag 4. For example, the gas valve group 21 is provided with an air inlet 211, an air charging port 212 and an air exhaust port 213, the air inlet 211 is in fluid communication with the air outlet 32 through a pipe, the air charging port 212 is in fluid communication with the air bag 4 through a pipe, and the air exhaust port 213 is in fluid communication with the low pressure port 12 through a pipe; the gas valve group 21 is used to control the opening and closing of the air path between the air charging port 212 and the air inlet 211 and the air exhaust port 213, thereby controlling the opening and closing of the air path between the air bag 4 and the air source device 3 and the low pressure generator 1. The gas valve group 21 can be selected but not limited to a gas valve such as a solenoid valve or an SMA (Shape Memory Alloy) valve.

[0067] The massage mechanism of the air bag 4 is explained as follows: the air bag 4 is inflated by the exhaust port 32 when the exhaust port 32 is in fluid communication with the air bag 4, and the air bag 4 is inflated to press the user, i.e. to massage the user. Then the fluid distribution device 2 can disconnect the air path between the air bag 4 and the exhaust port 32, the air bag 4 stores the gas to maintain the inflated state, i.e. the air bag 4 is pressurized to support; or the fluid distribution device 2 connects the air bag 4 with the low-pressure port 12, and the gas in the air bag 4 is automatically discharged due to the high pressure of the gas in the air bag 4, and the discharged gas is reabsorbed into the air inlet 31 through the fluid distribution device 2, the low-pressure port 12 and the second opening 112, i.e. the air bag 4 is deflated, and the air bag 4 can be repeatedly inflated and deflated to achieve the effects of pressing massage and vibration massage.

[0068] It can be understood that if the air bag 4 is directly connected with the atmosphere for deflation, the air bag 4 starts to deflate at a high internal pressure, so the deflation speed is fast, but as the gas is gradually discharged, the deflation speed of the air bag 4 gradually decreases, resulting in a slow deflation speed of the air bag 4, a long deflation cycle of the air bag 4, and a low inflation and deflation frequency of the air bag 4. When the air pressure in the air bag 4 approaches the standard atmospheric pressure, it is difficult for the air bag 4 to discharge the gas, so the gas in the air bag 4 cannot be completely discharged, the air bag 4 cannot be contracted to the state before the first inflation, and the inflation stroke of the air bag 4 is shortened. In the embodiment of the utility model, the low-pressure port 12 is in fluid communication with the air bag 4, and the deflation speed of the air bag 4 is increased due to the negative pressure generated by the low-pressure port 12, and the final air pressure in the air bag 4 is lower than the standard atmospheric pressure, which increases the deflation degree of the air bag 4, makes the deflation of the air bag 4 more complete and completed in a shorter time, and further improves the inflation and deflation frequency of the air bag 4, and enables the air bag 4 to be inflated with more gas and have a larger inflation and expansion deformation when being re-inflated, thereby ensuring the inflation stroke of the air bag 4. And the low-pressure generator 1 drives the low-pressure generator 1 to generate low pressure to accelerate the deflation of the air bag 4, which not only does not need to use a pressure relief valve or a gas valve with deflation function, but also reduces the production cost and improves the deflation efficiency.

[0069] In some embodiments, referring to Figure 5 As shown in the figure, the fluid distribution device 2 further comprises a housing 24, and the air inlet channel 22, the air outlet channel 23 and the plurality of valve groups 21 are located in the housing 24, which is conducive to the integration and miniaturization of the fluid distribution device 2, and facilitates the installation and movement of the fluid distribution device 2. Among them, the air inlet channel 22 and the air outlet channel 23 can be connected by a pipeline, or can be formed by being opened in the housing 24, which is further conducive to the integration and miniaturization of the fluid distribution device 2, and reduces the use of pipelines and costs.

[0070] In further embodiments, the low pressure generator 1 is fixedly installed in the housing 24, can be installed in the housing 24 or in the housing 24, which is conducive to the integration and miniaturization of the low pressure generator 1 and the fluid dispensing device 2 as a whole, while reducing the use of pipelines between the low pressure generator 1 and the fluid dispensing device 2. In further embodiments, the low pressure port 12 of the low pressure generator 1 is directly connected to the housing 24 and is in fluid communication with the air release channel 23 in the housing 24, so that no pipeline needs to be provided. In further embodiments, the low pressure generator 1 is integrally formed with the housing 24, i.e. the housing 24 and the low pressure generator can be integrally injection molded or 3D printed, which is conducive to reducing the production cost of the low pressure generator 1 and the housing 24 as a whole.

[0071] In some embodiments, referring to Figure 5 As shown, the number of air bags 4 and air valve groups 21 is several, each air valve group 21 corresponds to at least one air bag 4, and the fluid dispensing device 2 can control the inflation and deflation of multiple air bags 4 respectively. For example, referring to Figure 5 As shown, the fluid dispensing device 2 further comprises an air inlet channel 22 and an air release channel 23, the air inlet ports 211 of the plurality of air valve groups 21 are in fluid communication with the air inlet channel 22, and the air release ports 213 of the plurality of air valve groups 21 are in fluid communication with the air release channel 23; the number of air bags 4 and air valve groups 21 is the same, each air valve group 21 is in fluid communication with one air bag 4 through the inflation port 212; the air outlet port 32 of the air source device 3 is in fluid communication with the air inlet channel 22; the low pressure port 12 is in fluid communication with the air release channel 23. By connecting the plurality of air valve groups 21 and the low pressure port 12 through the air release channel 23, the deflation speed of the plurality of air bags 4 can be increased and the deflation degree of the plurality of air bags 4 can be increased through one low pressure generator 1, which is conducive to reducing the number of low pressure generators 1 and reducing costs. By connecting the plurality of air valve groups 21 and the air source device 3 through the air inlet channel 22, inflation can be performed for the plurality of air bags 4 through one air source device 3, which is conducive to reducing the number of air source devices 3 and reducing costs.

[0072] It can be understood that when each air valve group 21 corresponds to one air bag 4, the fluid dispensing device 2 can control the inflation and deflation of multiple air bags 4 respectively; in other embodiments, the inflation port 212 of each air valve group 21 can be in fluid communication with multiple air bags 4, i.e. when each air valve group 21 corresponds to multiple air bags 4, the air bags 4 corresponding to each air valve group 21 form a group, then the fluid dispensing device 2 can control the inflation and deflation of multiple groups of air bags 4 respectively.

[0073] In some embodiments, each low-pressure port 12 corresponds to at least one air bag 4 in a single low-pressure generator 1. For example, the plurality of low-pressure ports 12 are respectively in fluid communication with the plurality of air valve groups 21 through pipes, and then the low-pressure ports 12 are in fluid communication with the air bags 4. The plurality of air bags 4 can be deflated through the low-pressure generator 1, which is beneficial to improve the deflation speed and efficiency of the plurality of air bags 4. In this embodiment, the plurality of air valve groups 21 do not need to be in fluid communication with the same low-pressure port 12 of the low-pressure generator 1 through a tee, a cross, or the like, which is beneficial to reduce the cost. In addition, the plurality of air valve groups 21 are in fluid communication with the same low-pressure generator 1 through additional adapters, which increases the probability of air leakage. Therefore, this embodiment is beneficial to reduce the probability of air leakage and enhance the sealing performance.

[0074] In other embodiments, the number of low-pressure generators 1 is plural, and each low-pressure generator 1 corresponds to one air valve group 21 and one air bag 4. That is, each low-pressure generator 1 is used to be in fluid communication with the corresponding air bag 4, which is beneficial to improve the poor deflation effect of the plurality of air bags 4 when deflated through one low-pressure generator 1.

[0075] In some embodiments, referring to FIG. 1, Figure 5 As shown in FIG. 1, the pneumatic comfort system 100 further includes a gas tank 5, which is in fluid communication between the gas source device 3 and the fluid distribution device 2. The gas tank 5 can be a metal tank, a plastic tank, or the like, and can contain high-pressure gas.

[0076] It can be understood that the gas delivery speed of the gas source device 3 is limited, and the inflation speed of the air bag 4 is slow when the air bag 4 is inflated directly through the gas source device 3. In this embodiment, the gas can be stored in the gas tank 5 first, for example, the fluid distribution device 2 controls the air path between the gas tank 5 and the air bag 4 to be disconnected, and controls the gas source device 3 to output gas, and then the gas is compressed and stored in the gas tank 5. Then, when the air bag 4 needs to be inflated, the air path between the gas tank 5 and the air bag 4 is connected, and the gas in the gas tank 5 and the gas output by the gas source device 3 are simultaneously inflated into the air bag 4, which is beneficial to improve the inflation speed of the air bag 4 and the inflation response speed of the air bag 4. That is, the gas tank 5 can pre-store the gas output by the gas source device 3 to improve the problem that the inflation speed of the air bag 4 is slow due to the slow gas output speed of the gas source device 3. In addition, when the air bag 4 is inflated, the gas source device 3 can not need to be opened, and only the gas tank 5 inputs the gas to the air bag 4, that is, the gas tank 5 temporarily replaces the gas source device 3 to inflate the air bag 4, which is beneficial to reduce the use of the gas source device 3, reduce energy consumption, and prolong the service life of the gas source device 3. The gas tank 5 can store high-pressure gas, which is beneficial to provide the inflation speed and the inflation response speed of the air bag 4.

[0077] In some embodiments, the gas tank 5 is provided with a pressure regulating valve (not shown) for connecting the gas tank 5 with the external environment when the gas pressure in the gas tank 5 is too high, i.e. for pressure relief of the gas tank 5, to enhance the safety of the pneumatic comfort system 100. Alternatively, the pressure regulating valve can also be provided in the fluid distribution device 2, the gas source device 3, or in the pipeline between the gas tank 5 and any one of the fluid distribution device 2 and the gas source device 3, for example in the gas inlet channel 22.

[0078] In a third aspect, the utility model provides a kind of intelligent equipment (not shown), and the intelligent equipment includes pneumatic comfort system 100.The intelligent equipment is provided with above-mentioned low pressure generator 1 and pneumatic comfort system 100, while providing basic pneumatic comfort adjustment function, can improve the inflation and deflation frequency of air bag 4 and ensure the journey of air bag 4 re-inflation, enhance the effect of pneumatic comfort, and it is favorable to reduce noise and reduce production cost. Alternatively, the intelligent equipment is intelligent massage chair, vehicle seat, office chair, mattress etc.

[0079] Among them, pneumatic comfort system 100 is installed on intelligent equipment, and pneumatic adjustment function is attached to intelligent equipment, such as pneumatic massage function. For example, pneumatic comfort system 100 is installed on seat, and air bag 4 is arranged on seat backrest, and gas source device 3, low pressure generator 1 and fluid distribution device 2 can be arranged on seat backrest or arranged outside seat backrest, and air bag 4 can be inflated and deflated and contracted when being inflated and deflated, and the back plate of seated person can be pressed and massaged, to provide massage function.

[0080] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; under the idea of the utility model, technical features in the above embodiments or different embodiments can also be combined, steps can be implemented in any order, and there are many other changes of different aspects of the utility model as described above, which are not provided in details for simplicity; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of technical features; and these modifications or replacements do not make the essence of corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A low-voltage generator, characterized in that, include: The generator body has a first opening and a second opening; Multiple low-pressure ports are provided, which are fluidly connected between the first opening and the second opening. When gas flows from the first opening to the second opening, the gas pressure at the low-pressure port is lower than atmospheric pressure.

2. The low-voltage generator according to claim 1, characterized in that, The generator body is tubular, and a plurality of low-pressure ports are spaced apart along the circumference of the generator body.

3. The low-voltage generator according to claim 1, characterized in that, The generator body is provided with a low-pressure generating chamber, which is connected between the first opening and the second opening. The low-pressure generating chamber includes a first contraction chamber, and the end of the first contraction chamber opposite to the first opening is in fluid communication with the low-pressure port.

4. The low-voltage generator according to claim 3, characterized in that, The low-pressure generator further includes a conductive section, which has a conductive cavity. The generator body has a conductive port, which connects the conductive cavity to the low-pressure generating chamber in fluid communication. The low-pressure port is in fluid communication with the conductive cavity.

5. The low-voltage generator according to claim 3, characterized in that, The low-pressure generating chamber includes a diffusion chamber, which is in fluid communication with the end of the first contraction chamber opposite to the first opening. The cross-sectional area of ​​the diffusion chamber is larger than that of the first contraction chamber, and the low-pressure port is in fluid communication with the diffusion chamber.

6. The low-voltage generator according to claim 5, characterized in that, The low-pressure generating chamber includes a second contraction chamber and an expansion chamber. The second contraction chamber is in fluid communication with the end of the diffusion chamber opposite to the first opening, and the expansion chamber is in fluid communication with the end of the second contraction chamber opposite to the first opening.

7. The low-voltage generator according to claim 5, characterized in that, The generator body includes a shrink cylinder and a nozzle. One end of the shrink cylinder is in fluid communication with the first opening, and the other end of the shrink cylinder faces the second opening. The internal space of the shrink cylinder defines the first shrink chamber. One end of the nozzle is in fluid communication with the other end of the contraction cylinder, and the other end of the nozzle faces the second opening. The diffusion chamber is defined between the outer wall of the contraction cylinder and the nozzle and the inner wall of the generator body.

8. The low-voltage generator according to any one of claims 1 to 7, characterized in that, The low-pressure generator includes a silencing component, which is disposed at the first opening.

9. A pneumatic comfort system, characterized in that, include: air bag; The low-voltage generator as described in any one of claims 1 to 8; A fluid distribution device is provided, wherein the low-pressure port is in fluid communication with the air bag through the fluid distribution device, and the fluid distribution device is used to control the opening and closing of the air passage between the low-pressure port and the air bag.

10. A smart device, characterized in that, Includes the pneumatic comfort system as described in claim 9.

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