Ventilation device, seat and ventilation method

Abstract

The invention relates to the technical field of seats, in particular to a ventilation device, a seat and a ventilation method. The ventilation device comprises a ventilation pad, a ventilation pipe, an air source and a controller. The ventilation pad comprises a sealing sleeve and a ventilation interlayer, the sealing sleeve is provided with a plurality of first ventilation holes and at least one second ventilation hole, and the ventilation interlayer is wrapped in the sealing sleeve. The ventilation pipe comprises a contraction section, a throat section and an expansion section which are sequentially connected, and the end, deviating from the throat section, of the contraction section communicates with the second ventilation hole. One end of the guide pipe is arranged in the contraction section, and the port of the guide pipe faces the expansion section. The air source is used for providing continuous airflow and communicated with the other end of the guide pipe, and the controller is used for controlling connection and disconnection of an air path between the air source and the guide pipe. Through the mode, the heat dissipation effect of the seat is enhanced, the heat dissipation efficiency of the seat is improved, and the seat is rapidly cooled.

Description

Technical Field

[0001] The present application relates to the technical field of seats, and in particular to a ventilation device, a seat and a ventilation method. Background Art

[0002] At present, with the improvement of production level, cars, ships, trains, high-speed trains, airplanes and other transportation equipment have brought many conveniences to people's life, work, study, etc., and occupy an important position in people's travel life. With the improvement of people's living standards, people's requirements for riding comfort are getting stronger and stronger.

[0003] An important factor affecting riding comfort is the heat dissipation effect of the seat. In the related art, most seats use fans as air sources, and the fans blow or suck air towards the seats to achieve seat heat dissipation. However, the air volume of the fan is limited, so the heat dissipation effect of the seat is not obvious, and the heat dissipation efficiency is also slow, which cannot quickly cool the seat. Summary of the invention

[0004] The embodiments of the present application aim to provide a ventilation device, a seat and a ventilation method, so as to at least improve the problems of poor heat dissipation effect and slow heat dissipation efficiency of the seat and inability to quickly cool down the seat.

[0005] In order to solve the above technical problems, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a ventilation device, which includes a ventilation pad, a ventilation pipe, an air source and a controller. The ventilation pad includes a sealing sleeve and a breathable interlayer, the sealing sleeve is provided with a plurality of first ventilation holes and at least one second ventilation hole, and the breathable interlayer is wrapped inside the sealing sleeve. The ventilation pipe includes a contraction section, a throat section and an expansion section connected in sequence, and the end of the contraction section away from the throat section is connected to the second ventilation hole. The ventilation pipe also includes a conduit, one end of which is arranged in the contraction section and its port faces the expansion section. The air source is used to provide a continuous airflow, the air source is connected to the other end of the conduit, and the controller is used to control the connection and disconnection of the air path between the air source and the conduit.

[0007] In some embodiments, the conduit includes an introduction section and an ejection section, wherein the introduction section is disposed on the wall of the contraction section, the ejection section is communicated with the introduction section, and the ejection section is located in the contraction section with its port facing the expansion section.

[0008] In some embodiments, the introduction section extends radially along the contraction section, and the conduit portion is curved to be connected to the introduction section.

[0009] In some embodiments, the introduction section includes a narrowing portion, and an inner diameter of the narrowing portion gradually decreases along the radial direction of the contraction section.

[0010] In some embodiments, the ejection section partially coincides with the axis of the contraction section.

[0011] In some embodiments, the contraction rate of the contraction section gradually decreases along the direction from the contraction section toward the throat section.

[0012] In some embodiments, the ventilation pipe further includes a straight pipe section, one end of which is connected to the second ventilation hole, and the other end of which is connected to an end of the contraction section away from the throat section.

[0013] In some embodiments, the ventilation pad is provided with a plurality of second ventilation holes, and the ventilation device comprises a plurality of ventilation pipes. The controller is connected to the plurality of the conduits, and the controller is used to independently control the opening and closing of the air path between the air source and any one of the conduits.

[0014] In a second aspect, an embodiment of the present application provides a seat, comprising a ventilation device as described in any one of the above items, wherein at least one of the seat, back, armrests and leg parts of the seat is provided with the ventilation pad, and the first ventilation hole faces the seating space of the seat.

[0015] In a third aspect, an embodiment of the present application provides a ventilation method, which is applied to the seat, and the method includes: obtaining a ventilation mode; and controlling a preset ventilation pipe to be connected to an air source according to the ventilation mode.

[0016] In some embodiments, controlling a preset ventilation pipe to be connected to an air source according to a ventilation mode includes: obtaining ventilation area information according to the ventilation mode, obtaining a preset number of the ventilation pipe corresponding to the ventilation area information according to the ventilation area information, and controlling the ventilation pipe with the preset number to be connected to the air source.

[0017] In some embodiments, controlling preset ventilation pipes to be connected to an air source according to a ventilation mode includes: obtaining ventilation intensity information according to the ventilation mode, obtaining a preset number of ventilation pipes corresponding to the ventilation intensity information according to the ventilation intensity information, and controlling the preset number of ventilation pipes to be connected to the air source.

[0018] In the ventilation device, seat and ventilation method of the embodiment of the present application, when the air source passes the gas into the conduit and sprays it from the contraction section to the expansion section, negative pressure can be generated in the contraction section to inhale more gas, and a small airflow drives a large airflow, which is conducive to enhancing the heat dissipation effect and heat dissipation efficiency of the seat, so that the seat can be cooled quickly. In addition, the air source and the controller do not need to be arranged inside the seat, which is conducive to reducing the volume of the seat and reducing the noise of the seat.

[0019] The seat of the embodiment of the present application can achieve ventilation with controllable ventilation area and controllable ventilation intensity according to the needs of passengers, which is beneficial to improving the riding comfort of passengers.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0022] Figure 1 is a schematic structural diagram of a ventilation device according to an embodiment of the present application;

[0023] Figure 2 yes Figure 1 A perspective cutaway view of the central vent pad and vent pipe;

[0024] Figure 3 yes Figure 2 A partial enlarged view of the middle breathable barrier;

[0025] Figure 4 yes Figure 2 Axial cross-section of the central vent pipe;

[0026] Figure 5 is a flow chart of the ventilation method of an embodiment of the present application;

[0027] Figure 6 yes Figure 5 A detailed flow chart of step S200;

[0028] Figure 7 yes Figure 5 Another detailed flow chart of step S200;

[0029] Figure 8 yes Figure 5 Another detailed flow chart of step S200.

[0030] The reference numerals in the specific implementation manner are as follows:

[0031] 100. Ventilation device;

[0032] 1. Ventilation pad; 11. Sealing sleeve; 111. First ventilation hole; 112. Second ventilation hole; 113. First layer; 114. Second layer; 12. Breathable interlayer; 121. Gas channel;

[0033] 2. Ventilation pipe; 21. Contraction section; 22. Throat section; 23. Expansion section; 24. Conduit; 241. Introduction section; 2411. Narrowing section; 242. Extrusion section; 243. Bend section; 25. Straight pipe section; 26. Connector;

[0034] 3. Gas source;

[0035] 4. Controller. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. It should be noted that when an element is described as "fixed on" another element, it can be directly on another 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 another element, or there can be one or more centered elements therebetween. It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a different order from the module division in the device schematic diagram or the flow chart.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0039] In the description of the embodiments of the present application, the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meanings and therefore cannot be understood as limiting the scope of protection of the present application. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0041] 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 they do not conflict with each other.

[0042] Embodiment 1:

[0043] See also Figure 1 The embodiment of the present application provides a ventilation device 100, which includes a ventilation pad 1, a ventilation pipe 2, an air source 3 and a controller 4. The ventilation pad 1 is used to be installed in a seat to blow air or inhale air to the seat to dissipate heat from the seat. The ventilation pipe 2 is connected to the air source 3. When the air source 3 delivers gas to the ventilation pipe 2, a negative pressure can be formed in the ventilation pipe 2, so that one end of the ventilation pipe 2 can inhale gas and the other end can discharge gas. One end of the ventilation pipe 2 is connected to the ventilation pad 1, so that air can be blown or inhaled to the ventilation pad 1. The air source 3 is used to provide a continuous airflow, such as an air compressor, which can provide compressed air to supply the ventilation pipe 2. The controller 4 is connected to the air source 3 and the ventilation pipe 2. The controller 4 is used to control the on-off of the air path between the air source 3 and the ventilation pipe 2, that is, to control whether the gas is supplied to the ventilation pipe 2. For example, the controller 4 is arranged on the pipeline between the air source 3 and the ventilation pipe 2. The controller 4 can be a solenoid valve or include multiple solenoid valves.

[0044] It should be noted that the ventilation pad 1 is installed in the seat only as an example to illustrate its heat dissipation effect on the seat. The ventilation pad 1 can also be installed in other external devices to ventilate or dissipate heat for the external devices.

[0045] For the above ventilation pad 1, see Figure 1 and Figure 2The ventilation pad 1 includes a sealing sleeve 11 and a breathable interlayer 12 wrapped inside the sealing sleeve 11. A plurality of first ventilation holes 111 are opened on one side of the sealing sleeve 11, and a plurality of second ventilation holes 112 are opened on the other side. The number of the second ventilation hole 112 can also be one, that is, the sealing sleeve 11 is provided with at least one second ventilation hole 112. The breathable interlayer 12 is in a grid shape, so that airflow can flow inside the breathable interlayer 12, and has a certain supporting force, and will not block the fluid channel when the sealing sleeve 11 is under pressure.

[0046] The first ventilation hole 111 faces the seating space of the seat, and the seating space is used for passengers to sit. When the first ventilation hole 111 inhales or blows air, it can take away the air around the passenger, thereby dissipating heat from the seating space. The ventilation pad 1 is arranged in the seat, or is a part of the seat. When the first ventilation hole 111 inhales or blows air, it also dissipates heat from the seat.

[0047] The riding space includes not only the seat and the semi-enclosed space of the back of the seat, but also the space where the passengers move when they sit on the seat, such as the space around the legs, the space where the arms can move, the space where the head can move, etc.

[0048] The plurality of first ventilation holes 111 may include a plurality of first ventilation holes 111 of different shapes and sizes, so as to have different suction and blowing effects. For example, one of the first ventilation holes 111 on the sealing sleeve 11 is circular, another of the first ventilation holes 111 is rectangular, another of the first ventilation holes 111 is triangular, etc. For example, the sealing sleeve 11 has a plurality of circular first ventilation holes 111, one of the first ventilation holes 111 has a diameter of 1 cm, another of the first ventilation holes 111 has a diameter of 2 cm, another of the first ventilation holes 111 has a diameter of 3 cm, etc.

[0049] In some embodiments, the number of the first ventilation holes 111 is greater than the number of the second ventilation holes 112. That is, the ventilation pad 1 has a diversion effect, which is conducive to forming more air intake or air blowing ports on the seat, and improving the uniformity of the seat blowing or inhaling air to the passengers.

[0050] The second ventilation hole 112 is arranged opposite to the first ventilation hole 111, that is, the first ventilation hole 111 and the second ventilation hole 112 are respectively located on opposite sides of the ventilation pad 1, for example, they are arranged on opposite sides of the ventilation pad 1 along the thickness direction, so that the gas passes through the ventilation pad 1 in one direction, which is conducive to reducing the resistance of the gas in the ventilation pad 1, reducing the energy loss of the gas, and improving the heat dissipation effect of the seat. In addition, in this embodiment, the first ventilation hole 111 and the second ventilation hole 112 are respectively located on opposite sides of the ventilation pad 1 along the thickness direction, which is conducive to shortening the path length of the gas flowing in the ventilation pad 1 and reducing the energy loss of the gas.

[0051] When the ventilation cushion 1 is provided with a plurality of second ventilation holes 112, the ventilation device 100 includes a plurality of ventilation pipes 2. The number of ventilation pipes 2 is equal to the number of second ventilation holes 112, and each ventilation pipe 2 is connected to a second ventilation hole 112. At this time, the controller 4 is connected to the plurality of ventilation pipes 2, and the controller 4 is used to independently control the on-off of the air path between the air source 3 and any ventilation pipe 2. Thereby, the flow rate of air suction or exhaust to the ventilation cushion 1 can be controlled, and the heat dissipation intensity of the seat can be controlled. Among them, the ventilation pipe 2 can have multiple models, and different models of ventilation pipes 2 have different shapes and / or sizes, so as to have different suction and blowing effects. The multiple ventilation pipes 2 connected to the same ventilation cushion 1 can include multiple models, that is, one ventilation cushion 1 is installed with ventilation pipes 2 of multiple models.

[0052] The ventilation pad 1 is flat, so that it is easy to cover the frame of the seat, or to be set inside the seat to reduce the impact on the seat size. The ventilation pad 1 can be directly used as a covering layer of the seat, which can reduce the resistance to ventilation caused by the original covering layer of the seat and can also reduce the size of the seat. Optionally, the ventilation pad 1 is in the shape of a rectangular sheet. Optionally, the ventilation pad 1 is adapted to the shape of the covering layer on the seat, so as to directly replace the original covering layer of the seat.

[0053] The sealing sleeve 11 is elastic or plastic, and when a passenger sits on the seat and applies pressure to the sealing sleeve 11, the sealing sleeve 11 can be deformed, thereby improving the passenger's riding comfort. The sealing sleeve 11 can be made of genuine leather, artificial leather, plastic, rubber, silicone, etc.

[0054] In some embodiments, see Figure 2 The sealing sleeve 11 includes a first layer 113 and a second layer 114. The first layer 113 is disposed in the second layer 114. The first layer 113 is used to form a seal, and the second layer 114 is used to contact with the passenger, thereby improving the riding comfort of the passenger and improving the airtightness of the sealing sleeve 11. Optionally, the first layer 113 is made of a rubber material, a silicone material or other material with good airtightness, and the second layer 114 is made of a skin-friendly and wear-resistant material such as a genuine leather material or an artificial leather material.

[0055] It should be noted that when the sealing sleeve 11 is inhaled or blown, the sealing sleeve 11 will expand or contract due to the change in air pressure inside the sealing sleeve 11, affecting the shape of the seat and the comfort of the passengers. The breathable interlayer 12 is supported in the ventilation cushion 1. When the sealing sleeve 11 is inhaled, the breathable interlayer 12 can support the sealing sleeve 11 and improve the problem of the shrinkage of the sealing sleeve 11. Among them, the breathable interlayer 12 can be bonded to the inner wall of the sealing sleeve 11. When the sealing sleeve 11 is blown, the breathable interlayer 12 can pull the sealing sleeve 11 and improve the problem of the expansion of the sealing sleeve 11. Optionally, the breathable interlayer 12 can be made of plastic material, metal material, etc., with certain strength and elasticity, to improve the problem of poor seat comfort caused by the easy collapse of the ventilation cushion 1 and excessive hardness.

[0056] The air-permeable barrier layer 12 is adapted to the shape of the inner cavity of the sealing sleeve 11. For example, when the sealing sleeve 11 is in the shape of a rectangular sheet, the air-permeable barrier layer 12 is also in the shape of a rectangular sheet. Figure 3 The breathable interlayer 12 is provided with a gas channel 121 along the thickness direction, and a plurality of gas channels 121 are arranged at intervals along the length direction and the width direction of the breathable interlayer 12, so that the gas can pass through the breathable interlayer 12 along the thickness direction of the breathable interlayer 12, thereby reducing the obstruction of the breathable interlayer 12 to the gas and reducing the gas energy loss.

[0057] Among them, along the thickness direction of the breathable interlayer 12, there is a gap between the breathable interlayer 12 and the inner wall of the sealing sleeve 11, so that the gas can flow in a direction perpendicular to the thickness of the breathable interlayer 12. It can be understood that along the thickness direction of the ventilation pad 1, the first ventilation hole 111 and the second ventilation hole 112 may not be directly opposite, so the gas needs to flow a distance in the direction perpendicular to the thickness of the ventilation pad 1 before it can flow from one of the first ventilation hole 111 and the second ventilation hole 112 to the other. By setting a gap between the breathable interlayer 12 and the inner wall of the sealing sleeve 11, a channel perpendicular to the thickness direction of the ventilation pad 1 can be formed. In addition to realizing the gas flow between the first ventilation hole 111 and the second ventilation hole 112, the suction or blowing intensity of multiple first ventilation holes 111 can also be made more uniform. In some other embodiments, the breathable interlayer 12 is also provided with a gas channel 121 in a direction perpendicular to the thickness.

[0058] For the ventilation pipe 2 above, see Figure 2 and Figure 4The ventilation pipe 2 includes a contraction section 21, a throat section 22 and an expansion section 23 connected in sequence, and the end of the contraction section 21 away from the throat section 22 is connected to the second ventilation hole 112. The ventilation pipe 2 also includes a conduit 24, one end of which is arranged in the contraction section 21 and its port faces the expansion section 23. In the embodiment of the present application, the end of the contraction section 21 away from the throat section 22 is connected to the second ventilation hole 112; the air source 3 is connected to the other end of the conduit 24, and the controller 4 is used to control the opening and closing of the air path between the air source 3 and the conduit 24. For example, the controller 4 is arranged on the pipeline between the air source 3 and the conduit 24.

[0059] When the gas source 3 passes gas into the conduit 24, the gas is ejected from the contraction section 21 toward the expansion section 23, and drives the surrounding gas to flow toward the expansion section 23, thereby forming a negative pressure in the contraction section 21. Since the contraction section 21 is connected to the first ventilation hole 111 through the second ventilation hole 112, the gas near the first ventilation hole 111 is sucked away, that is, the gas in the riding space is sucked away, and the riding space and the seat are cooled. Dissipating heat by suction is beneficial to improving passenger comfort compared to blowing. Among them, when the conduit 24 ejects gas from the contraction section 21 toward the expansion section 23, a negative pressure can be generated in the contraction section 21 to inhale more gas, and a small airflow drives a large airflow, increasing the air intake of the ventilation pad 1, enhancing the heat dissipation effect on the riding space and the seat, improving the heat dissipation efficiency, and cooling the seat quickly. Accordingly, the gas output flow rate and gas flow rate of the gas source 3 can be appropriately reduced to further reduce the noise of the seat, and the energy consumption of the gas source 3 can be reduced.

[0060] The ventilation pipe 2 can be made of plastic material, metal material, etc. When the ventilation pipe 2 is made of plastic material, it can be manufactured through 3D printing technology, which is conducive to reducing production costs.

[0061] In some embodiments, see Figure 4 , the contraction section 21, the throat section 22 and the expansion section 23 extend along the same axis. That is, the axis lines of the contraction section 21, the throat section 22 and the expansion section 23 coincide with each other, and when the gas passes through the contraction section 21, the throat section 22 and the expansion section 23, the gas does not need to pass through a bend, which is conducive to reducing the energy loss of the gas.

[0062] In some embodiments, see Figure 2 and Figure 4 The contraction section 21, the throat section 22 and the expansion section 23 are all rotating bodies. When the gas passes through the contraction section 21, it contracts evenly from all sides toward the axis of the contraction section 21; when the gas passes through the expansion section 23, the gas expands evenly toward the direction away from the axis of the expansion section 23, which is conducive to reducing air flow turbulence and reducing gas energy loss.

[0063] For the above contraction section 21, see Figure 4, along the direction from the contraction section 21 to the throat section 22, the contraction rate of the contraction section 21 gradually decreases. When the gas passes through the contraction section 21, the contraction rate of the gas gradually decreases, and then when the gas passes through the throat section 22, the contraction rate of the gas suddenly changes to zero. By gradually reducing the contraction rate of the gas, the degree of the sudden change can be reduced, thereby weakening the strength of the vortex ring caused by the sudden change in the contraction rate of the gas. When the gas generates a vortex ring in the ventilation pipe 2, a large amount of energy loss will be generated, and then by gradually reducing the contraction rate of the contraction section 21, it is helpful to reduce the energy loss of the gas.

[0064] In the embodiment of the present application, the contraction rate of the contraction section 21 refers to the rate of change of the inner diameter of the contraction section 21 , and the expansion rate of the expansion section 23 refers to the rate of change of the inner diameter of the expansion section 23 .

[0065] Among them, see Figure 4 , at the connection between the contraction section 21 and the throat section 22, the contraction rate of the contraction section 21 is zero, that is, the tangent line at the connection between the contraction section 21 and the throat section 22 is parallel to the axis of the contraction section 21. When the gas flows from the contraction section 21 to the throat section 22, the contraction rate of the gas theoretically has no sudden change, which fully reduces the energy loss of the gas.

[0066] For the above throat section 22, see Figure 4 , Figure 4 The middle dotted line is the throat section 22 , and the length of the throat section 22 approaches zero, that is, after the gas flows out of the contraction section 21 , it immediately enters the expansion section 23 , which is conducive to shortening the length of the ventilation pipe 2 .

[0067] In some embodiments, see Figure 4 , the length of the contraction section 21 is less than the length of the expansion section 23. The time for the gas to flow in the expansion section 23 is longer than the time for the gas to flow in the contraction section 21, which can generate a greater negative pressure in the contraction section 21 and increase the air suction amount of the ventilation pipe 2 to the ventilation pad 1.

[0068] For the above expansion section 23, see Figure 4 , along the direction from the throat section 22 to the expansion section 23, the expansion rate of the expansion section 23 first gradually increases, and then remains constant. When the gas passes through the throat section 22, the expansion rate of the gas is zero, and then the gas passes through the expansion section 23, and the expansion rate of the gas suddenly changes to greater than zero. By gradually increasing the expansion rate of the expansion section 23, the degree of the sudden change can be reduced, thereby weakening the strength of the vortex ring caused by the sudden change in the expansion rate of the gas, which is conducive to reducing the energy loss of the gas.

[0069] Among them, see Figure 4, at the connection between the expansion section 23 and the throat section 22, the expansion rate of the expansion section 23 is zero, that is, the tangent line at the connection between the expansion section 23 and the throat section 22 is parallel to the axis of the expansion section 23. When the gas flows from the throat section 22 to the expansion section 23, the expansion rate of the gas theoretically has no sudden change, which fully reduces the energy loss of the gas.

[0070] The expansion rate of the expansion section 23 increases gradually at first and then remains constant. Therefore, when the gas passes through the expansion section 23, the expansion rate of the gas theoretically does not change suddenly, which is beneficial to reducing the energy loss of the gas. Figure 4 In the figure, the solid line between the expansion section 23 and the throat section 22 is the boundary between a section of the expansion section 23 where the expansion rate gradually increases and a section of the expansion section 23 where the expansion rate remains constant. It can be understood that the tangents of the two sections of the expansion section 23 at the boundary are parallel to each other.

[0071] For the above catheter 24, see Figure 4 The conduit 24 includes an introduction section 241 and an ejection section 242. The introduction section 241 is arranged on the wall of the contraction section 21, and the ejection section 242 is connected to the introduction section 241. The ejection section 242 is located in the contraction section 21 and its port faces the expansion section 23. By arranging the introduction section 241 on the wall of the contraction section 21, it is beneficial to space the pipe connected to the introduction section 241 from the end of the contraction section 21 away from the expansion section 23, thereby reducing interference with the communication between the contraction section 21 and the second ventilation hole 112. In addition, the volume occupied by the conduit 24 in the contraction section 21 can be reduced, so that the contraction section 21 can inhale more gas.

[0072] In some embodiments, see Figure 4 , the ejection section 242 partially coincides with the axis of the contraction section 21. That is, the ejection section 242 is arranged close to the axis of the contraction section 21, which is conducive to increasing the air suction efficiency of the ventilation pipe 2. Further, the axis of the ejection section 242 coincides with the axis of the contraction section 21, so as to fully increase the air suction efficiency of the ventilation pipe 2.

[0073] In some embodiments, see Figure 4 , the ejection section 242 is parallel to the axis of the ventilation pipe 2. Therefore, when the gas is ejected from the ejection section 242, the flow direction of the gas flow is parallel to the axis of the ventilation pipe 2, and the gas flow ejected from the ejection section 242 does not need to change the flow direction in the expansion section 23, which is conducive to reducing the energy loss of the gas.

[0074] In some embodiments, see Figure 4, the introduction section 241 extends radially along the contraction section 21, and the conduit 24 is partially curved to connect to the introduction section 241. Exemplarily, the conduit 24 also includes a curved section 243, which is in the shape of a curved tube, and the curved section 243 connects the introduction section 241 with the ejection section 242. It can be understood that the angle between the axis of the introduction section 241 and the axis of the ejection section 242 is a right angle, and the gas directly enters the ejection section 242 from the introduction section 241, which will cause the gas to lose a lot of energy. Connecting the introduction section 241 with the ejection section 242 through the curved section 243 in the shape of a curved tube can reduce the energy loss of the gas.

[0075] Furthermore, the curved section 243 smoothly connects the introduction section 241 and the ejection section 242. Smooth connection means that the tangents of the axis line at both ends of the curved section 243 are parallel to the axis line of the introduction section 241 and the axis line of the ejection section 242, respectively, and the axis line of the curved section 243 is a curve. For example, the axis line of the curved section 243 is an arc, a parabola, an elliptical arc, etc. The axis line of the curved section 243 is preferably an arc, which fully reduces the energy loss of the gas.

[0076] In some embodiments, see Figure 4 The introduction section 241 includes a narrowing portion 2411, and the inner diameter of the narrowing portion 2411 gradually decreases along the radial direction of the contraction section 21. It can be understood that the airflow flows in the direction of the introduction section 241 toward the axis of the contraction section 21, so that the inner diameter of the narrowing portion 2411 gradually decreases along the direction toward the axis of the contraction section 21. By providing the narrowing portion 2411, the cross-sectional area through which the gas flows becomes smaller, thereby increasing the flow rate of the airflow.

[0077] In some embodiments, see Figure 4 The ventilation pipe 2 also includes a straight pipe section 25, one end of which is connected to the second ventilation hole 112, and the other end of the straight pipe section 25 is connected to the end of the contraction section 21 away from the throat section 22. The inner diameter of the straight pipe section 25 is equal to the inner diameter of the end of the contraction section 21 away from the throat section 22. By providing the straight pipe section 25, it is convenient for the ventilation pipe 2 to communicate with the second ventilation hole 112, and the straight pipe section 25 can be partially inserted into the second ventilation hole 112, thereby enhancing the air tightness of the connection between the ventilation pipe 2 and the ventilation pad 1.

[0078] In some embodiments, see Figure 4 The ventilation pipe 2 further includes a joint 26, which is arranged on the outer wall of the contraction section 21, and the joint 26 is communicated with the conduit 24. The joint 26 is used to connect the pipeline, so that the ventilation pipe 2 is conveniently connected to the pipeline.

[0079] Embodiment 2:

[0080] The present application provides a seat (not shown), the seat includes a ventilation device 100, at least one of the seat, back, armrest and leg portion of the seat is provided with a ventilation pad 1, and the first ventilation hole 111 faces the seating space of the seat. The seat has the structural features and beneficial effects of the ventilation device 100, which will not be described in detail here.

[0081] When the seat portion of the seat is provided with a ventilation device 100, if a second ventilation device 100 is provided at another part of the seat, the second ventilation device 100 can share an air source 3 and a controller 4 with the first ventilation device 100, which is conducive to reducing costs. In addition, the second ventilation device 100 does not need to be provided with a ventilation pipe 2, but is connected to the sealing sleeve 11 of the first ventilation device 100 through a pipeline, for example, connected to the first ventilation hole 111 or the second ventilation hole 112 of the first ventilation device 100.

[0082] Embodiment three:

[0083] The present application embodiment provides a ventilation method for seats, see Figure 5 , methods include:

[0084] S100: Acquire ventilation mode.

[0085] The seat may include buttons or a touch screen through which the user may input the ventilation mode that he or she desires.

[0086] It is understandable that the seat further includes a control device (not shown), which is used to obtain the ventilation mode based on a button or a touch screen, and to control the air source 3 and the controller 4. The seat may also include a communication module, which is connected to a network or a nearby smart device for communication, and the ventilation mode may be input through a smart device such as a mobile phone, or through a wireless controller 4 such as a remote controller.

[0087] S200: Control the preset ventilation pipe 2 to be connected to the air source 3 according to the ventilation mode.

[0088] The ventilation mode includes at least one of ventilation area information and ventilation intensity information. The ventilation area information is the area that needs to be ventilated, such as the seat, back, armrest and leg of the seat. The ventilation intensity information is the ventilation intensity of the area that needs to be ventilated, such as light breeze, moderate wind, strong wind, etc.

[0089] When the ventilation mode includes ventilation zone information , see Figure 6 , step S200 includes:

[0090] S210: Obtain ventilation area information according to the ventilation mode.

[0091] The ventilation areas may be named separately, for example, ventilation area A, ventilation area B, etc., and the ventilation area information may be ventilation area A, ventilation area B, etc.

[0092] S220: Obtaining a preset number of the ventilation pipe 2 corresponding to the ventilation area information according to the ventilation area information.

[0093] The preset number of the ventilation pipe 2 corresponding to the ventilation area A may be A, and the preset number of the ventilation pipe 2 corresponding to the ventilation area B may be B. When one ventilation area corresponds to multiple ventilation pipes 2, the preset numbers of the multiple ventilation pipes 2 corresponding to the ventilation area A are A1, A2, A3, A4, A5, etc., and the preset numbers of the multiple ventilation pipes 2 corresponding to the ventilation area B are B1, B2, B3, B4, B5, etc.

[0094] S230: Control the ventilation pipe 2 with a preset number to be connected to the air source 3.

[0095] Take the ventilation area information of ventilation area A as an example for explanation: the ventilation area information is obtained as ventilation area A according to the ventilation mode, and the preset number of the ventilation pipe 2 corresponding to the ventilation area information is obtained as A according to the ventilation area A, and then one or more ventilation pipes 2 with the preset number A are controlled to be connected with the air source 3, for example, the ventilation pipes 2 with preset numbers A1 and A2 are controlled to be connected with the air source 3, or the ventilation pipes 2 with preset numbers A1 and A5 are controlled to be connected with the air source 3, so as to realize ventilation in the ventilation area A.

[0096] When the ventilation mode includes ventilation intensity information , see Figure 7 , step S200 includes:

[0097] S240: Obtain ventilation intensity information according to the ventilation mode.

[0098] The ventilation intensity information may include light breeze, moderate wind, and strong wind, etc.

[0099] S250: Obtaining a preset number of corresponding ventilation pipes 2 according to the ventilation intensity information.

[0100] The preset number of ventilation pipes 2 corresponding to a breeze is a first number, the preset number of ventilation pipes 2 corresponding to a moderate wind is a second number, and the preset number of ventilation pipes 2 corresponding to a strong wind is a third number. The third number is greater than the second number, and the second number is greater than the first number, so that the ventilation intensity of the strong wind is greater than the ventilation intensity of the moderate wind, and the ventilation intensity of the moderate wind is greater than the ventilation intensity of the breeze.

[0101] S260: Control a preset number of ventilation pipes 2 to be connected to the air source 3.

[0102] Taking the ventilation intensity information including light breeze, moderate wind and strong wind as an example, the preset numbers of the multiple ventilation pipes 2 are 1, 2, 3, 4, 5, 6, etc.

[0103] When the ventilation intensity information of the ventilation mode is a breeze, a first number of ventilation pipes 2 can be controlled to be connected to the air source 3. The first number can be one third of the total number of ventilation pipes 2, for example, the ventilation pipes 2 with preset numbers 1 and 2 are controlled to be connected to the air source 3, or the ventilation pipes 2 with preset numbers 2 and 5 are controlled to be connected to the air source 3, so as to achieve ventilation with a ventilation intensity of a breeze.

[0104] When the ventilation intensity information of the ventilation mode is a stroke, the second number of ventilation pipes 2 can be controlled to be connected to the air source 3. The second number can be two-thirds of the total number of ventilation pipes 2, for example, the ventilation pipes 2 with preset numbers 1, 2, 3, and 4 are controlled to be connected to the air source 3, or the ventilation pipes 2 with preset numbers 2, 3, 4, and 5 are controlled to be connected to the air source 3 to achieve ventilation with a ventilation intensity of a stroke.

[0105] When the ventilation intensity information of the ventilation mode is high wind, a third number of ventilation pipes 2 may be controlled to be connected to the air source 3. The third number may be equal to the total number of ventilation pipes 2, for example, the ventilation pipes 2 with preset numbers 1, 2, 3, 4, 5, and 6 are controlled to be connected to the air source 3 to achieve ventilation with a ventilation intensity of high wind.

[0106] When the ventilation mode includes ventilation area information and ventilation intensity information , see Figure 8 , step S200 includes:

[0107] S210: Obtain ventilation area information according to the ventilation mode.

[0108] S220: Obtaining a preset number of the ventilation pipe 2 corresponding to the ventilation area information according to the ventilation area information.

[0109] S240: Obtain ventilation intensity information according to the ventilation mode.

[0110] S250: Obtaining a preset number of corresponding ventilation pipes 2 according to the ventilation intensity information.

[0111] Steps S210, S220, S240, and S250 are respectively the same as the above-mentioned steps with the same names, and are not repeated here.

[0112] S270: Controlling a preset number of ventilation pipes 2 with preset numbers to be connected to the air source 3 .

[0113] Taking the ventilation area information as ventilation area A, and the ventilation intensity information including breeze, moderate wind and strong wind as an example, the preset numbers of the multiple ventilation pipes 2 corresponding to the ventilation area A are A1, A2, A3, A4, A5, A6, etc.

[0114] When the ventilation intensity information of the ventilation mode is a breeze, a first number of ventilation pipes 2 in the ventilation pipes 2 with a preset number A can be controlled to be connected to the air source 3. The first number can be one third of the number of ventilation pipes 2 with a preset number A, for example, the ventilation pipes 2 with preset numbers A1 and A2 are controlled to be connected to the air source 3, or the ventilation pipes 2 with preset numbers A2 and A5 are controlled to be connected to the air source 3, so as to achieve ventilation with a ventilation intensity of a breeze at the ventilation area A.

[0115] When the ventilation intensity information of the ventilation mode is moderate, the second number of ventilation pipes 2 in the ventilation pipes 2 with preset number A can be controlled to be connected to the air source 3. The second number can be two-thirds of the number of ventilation pipes 2 with preset number A, for example, the ventilation pipes 2 with preset numbers A1, A2, A3, and A4 are controlled to be connected to the air source 3, or the ventilation pipes 2 with preset numbers A2, A3, A4, and A5 are controlled to be connected to the air source 3, so as to achieve ventilation with a ventilation intensity of moderate in the ventilation area A.

[0116] When the ventilation intensity information of the ventilation mode is high wind, the third number of ventilation pipes 2 in the ventilation pipes 2 with preset number A can be controlled to be connected to the air source 3. The third number can be equal to the number of ventilation pipes 2 with preset number A, for example, the ventilation pipes 2 with preset numbers A1, A2, A3, A4, A5, and A6 are controlled to be connected to the air source 3, so as to realize ventilation with high wind intensity at the ventilation area A.

[0117] In the ventilation device 100, seat and ventilation method of the embodiment of the present application, when the air source 3 passes the gas into the conduit 24 and sprays it from the contraction section 21 toward the expansion section 23, a negative pressure can be generated in the contraction section 21 to inhale more gas, and a small airflow drives a large airflow, which is beneficial to enhance the heat dissipation effect of the seat and improve the heat dissipation efficiency, so that the seat can be cooled down quickly. The air source 3 and the controller 4 do not need to be arranged inside the seat, which is beneficial to reducing the volume of the seat and reducing the noise of the seat. The ventilation pad 1 is flat, which is beneficial to reducing the impact on the size of the seat. The ventilation method of the embodiment of the present application, based on the seat, can achieve ventilation with controllable ventilation area and controllable ventilation intensity according to the needs of the passengers, which is beneficial to improving the riding comfort of the passengers.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Under the concept of the present application, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present application as described above, which are not provided in detail for the sake of simplicity. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A ventilation device, characterized in that: include: A ventilation pad comprises a sealing sleeve and a breathable barrier layer wrapped inside the sealing sleeve, wherein the sealing sleeve is provided with a plurality of first ventilation holes and at least one second ventilation hole; The ventilation pipe comprises a contraction section, a throat section and an expansion section connected in sequence, wherein one end of the contraction section away from the throat section is connected to the second ventilation hole; the ventilation pipe further comprises a conduit, one end of which is arranged in the contraction section and the port of which faces the expansion section; An air source, used for providing a continuous air flow, the air source being connected to the other end of the conduit; A controller is used to control the on-off of the gas path between the gas source and the conduit.

2. The ventilation device according to claim 1, characterized in that The conduit comprises an introduction section and an ejection section, wherein the introduction section is arranged on the wall of the contraction section, the ejection section is communicated with the introduction section, and the ejection section is located in the contraction section with a port thereof facing the expansion section.

3. The ventilation device according to claim 2, characterized in that The introduction section extends along the radial direction of the contraction section, and the conduit portion is curved to be butted and connected to the introduction section.

4. The ventilation device according to claim 3, characterized in that The introduction section comprises a narrowing portion, and an inner diameter of the narrowing portion gradually decreases along a radial direction of the contraction section.

5. The ventilation device according to claim 2, characterized in that: The ejection section part coincides with the axis center line of the contraction section.

6. The ventilation device according to claim 1, characterized in that Along the direction from the contraction section to the throat section, the contraction rate of the contraction section gradually decreases.

7. The ventilation device according to claim 1, characterized in that The ventilation pipe also includes a straight pipe section, one end of which is connected to the second ventilation hole, and the other end of which is connected to an end of the contraction section away from the throat section.

8. The ventilation device according to any one of claims 1 to 7, characterized in that: The ventilation pad is provided with a plurality of second ventilation holes, and the ventilation device comprises a plurality of ventilation pipes; The controller is in communication with the plurality of conduits, and is used to independently control the on-off of the gas path between the gas source and any one of the conduits.

9. A seat, characterized in that: It comprises the ventilation device as claimed in any one of claims 1 to 8, wherein at least one of the seat, back, armrest and leg portion of the seat is provided with the ventilation pad, and the first ventilation hole faces the seating space of the seat.

10. A ventilation method, applied to the seat as claimed in claim 9, characterized in that: The method comprises: Get ventilation mode; The preset ventilation pipe is controlled to be connected to the air source according to the ventilation mode.

11. The ventilation method according to claim 10, characterized in that: The controlling of the preset ventilation pipe to communicate with the air source according to the ventilation mode comprises: The ventilation area information is obtained according to the ventilation mode, the preset number of the ventilation pipe corresponding to the ventilation area information is obtained according to the ventilation area information, and the ventilation pipe with the preset number is controlled to be connected to the air source.

12. The ventilation method according to claim 10, characterized in that: The controlling of the preset ventilation pipe to communicate with the air source according to the ventilation mode comprises: The ventilation intensity information is obtained according to the ventilation mode, the preset number of ventilation pipes corresponding to the ventilation intensity information is obtained according to the ventilation intensity information, and the preset number of ventilation pipes are controlled to be connected to the air source.

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