Integrated shape memory alloy pump valve module

Abstract

This invention discloses an integrated shape memory alloy pump and valve module. At least one blade with a three-dimensional curved surface is mounted on the rotatable wall of a transmission component at the output shaft end of the air source drive mechanism. This blade is configured to generate a pressure difference on both sides of the three-dimensional curved surface when rotating synchronously with the transmission component. This causes the gas inside the housing to accelerate from the air inlet of the air source into the base space, generating turbulence. In this pump and valve module, as the blade rotates with the transmission component, external airflow is drawn into the pump body, dissipating the heat generated by the pump and valve drive mechanism. This reduces the heat generated by the drive mechanism, preventing temperature fluctuations in the thermally actuated shape memory alloy near the drive mechanism due to the drive mechanism's operating temperature. Simultaneously, the blade rotation also assists the compression component in drawing in air, improving pump and valve performance.

Description

Technical Field

[0001] This invention relates to the field of vehicle pump and valve technology, and in particular to an integrated shape memory alloy pump and valve module. Background Technology

[0002] With cars becoming increasingly common in modern cities, drivers are prone to lower back and back strain during driving. To address this issue, an integrated shape memory alloy wire (SMA) pump valve module has been developed. This lumbar support SMA pump valve uses the extension and retraction of the shape memory alloy wire to open or close the intake and deflation valves, controlling the inflation and deflation of the airbag that provides support. By supplying power to the shape memory alloy wire, the vehicle seat can inflate, deflate, or maintain pressure. A typical shape memory alloy wire pump valve for pneumatic support includes: a gas supply mechanism for supplying high-pressure gas through a gas inlet; a gas distribution module with an internal gas distribution channel connecting the gas supply component and the gas inlet, the gas distribution channel including gas distribution branches, each including an inflation gas path and a deflation gas path, the inflation gas path delivering the high-pressure gas output from the gas inlet to the gas-using component, and the deflation gas path discharging gas from the gas-using component; a switch valve body including a valve core body arranged along the axis of the gas supply mechanism, the switch valve body corresponding to the inflation and deflation gas paths, and the switch valve body controlling the opening and closing of the inflation and deflation gas paths; and an electrical control module comprising shape memory alloy wires and electrical control components connected to each valve core body; the electrical control components controlling the extension and retraction of the shape memory alloy wires to move the valve core bodies, thereby achieving the inflation, pressure holding, or deflation state of the gas-using component, as disclosed in patent document CN112046372B.

[0003] Existing integrated shape memory alloy wire (SMA) pumps and valves generate heat during operation. This heat accumulates inside the pump and valve housing and cannot be dissipated, causing the temperature to rise continuously. Since the shape memory wire is usually located on the drive mechanism side of the module, its normal operation requires a certain temperature range. If the heat generated during pump and valve operation cannot be effectively dissipated, the heat generated by the drive mechanism may affect the temperature of the shape memory wire, causing the shape memory wire to malfunction due to heat factors other than those of the drive mechanism, thereby affecting the normal operation of the pump and valve. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and defects of the prior art and provide an integrated shape memory alloy pump valve module. This integrated shape memory alloy pump valve module has blades on its internal transmission component and is configured with an effective airflow channel. When the pump valve is working, under the drive of the drive mechanism, as the blades rotate with the transmission component, the external airflow accelerates into the pump valve module, and the heat generated by the drive mechanism is discharged through the internal effective airflow channel, effectively reducing the heat generated by the drive mechanism. This prevents the temperature of the thermo-actuated shape memory alloy near the drive mechanism from rising too quickly or too high, thus preventing the temperature of the thermo-actuated shape memory alloy near the drive mechanism from fluctuating due to the operating temperature of the drive mechanism. At the same time, the rotation of the blades can also assist the compression component in drawing in air, improving the working performance of the pump valve.

[0005] This invention is achieved through the following technical solution:

[0006] The integrated shape memory alloy pump and valve module includes:

[0007] A housing, inside which a pump and valve module is arranged, the pump and valve module including a shape memory alloy valve driven by a thermally actuated shape memory alloy, a gas source for providing compressed gas, and at least an electronic control module for providing an electrical connection to the shape memory alloy valve;

[0008] The gas source includes a drive mechanism, a base located on the output shaft side of the drive mechanism, a transmission component installed in the space of the base and rotatably connected to the output shaft end of the drive mechanism, a compression component located on the side of the base away from the drive mechanism and connected to the transmission component, and a gas distribution module communicating with the gas outlet end of the compression component. The shape memory alloy valve is connected to the gas distribution module.

[0009] At least one blade with a three-dimensional curved surface is provided on the rotatable wall of the transmission component. When the blade rotates synchronously with the transmission component, it generates a pressure difference on both sides of the three-dimensional curved surface, which accelerates the gas inside the housing from the air inlet of the air source into the base space and generates turbulence.

[0010] Preferably, the pump valve module has a heat dissipation hole on the side near the thermo-mechanical memory alloy, which is used to accelerate the discharge of gas in the base space from the pump valve module when the blade rotates, and blow it toward the thermo-mechanical memory alloy to dissipate heat from the thermo-mechanical memory alloy.

[0011] Preferably, the heat dissipation holes include side heat dissipation holes, which are formed by openings in the side wall of the housing of the base.

[0012] Preferably, the heat dissipation hole includes a top heat dissipation hole, which is formed by an opening on the end face of the gas distribution module away from the base. The top heat dissipation hole communicates with the internal space of the base through a heat dissipation channel formed inside the gas distribution module and the compression assembly. The top heat dissipation hole is located on one side of the position where the valve core of the shape memory alloy valve is connected to the thermo-actuated shape memory alloy. The valve core moves in a direction perpendicular to the moving direction of the thermo-actuated shape memory alloy to realize the gas-using device in the charging state, pressure-holding state, or degassing state.

[0013] Preferably, the housing is provided with an air inlet, which is connected to an air inlet pipe. The air inlet pipe is connected to the external space of the vehicle seat to introduce low-temperature gas from the external space into the interior of the housing.

[0014] Preferably, the transmission assembly includes a torsion shaft, on the outer side wall of which at least one of the blades is arranged.

[0015] Preferably, the air intake includes a first airflow inlet disposed on the outer side between the base plate of the base and the outer shell end face of the drive mechanism, a first air passage communicating with the first airflow inlet is provided between the base plate of the base and the outer shell end face of the drive mechanism, and a second air passage connecting the first air passage is formed at the connection between the outer wall of the output shaft of the drive mechanism and the base plate of the base, and the second air passage is communicating with the internal cavity of the air source.

[0016] Preferably, the air intake includes a second airflow inlet on the outer end face of the base plate of the drive mechanism near the base, and an airflow matching inlet is arranged on the base plate corresponding to the second airflow inlet.

[0017] Preferably, the air intake includes a third airflow inlet disposed on the side wall of the base, and the external airflow inlet is located on the side of the negative pressure area generated by the rotation of the blades.

[0018] Preferably, the compression assembly includes an air pump cup, an air pump flat gasket, and an air pump top cover. The air pump flat gasket is arranged between the air pump cup and the air pump top cover. Air pump air outlets are arranged on the air pump flat gasket and the air pump top cover, connecting the internal cavity of the air pump cup with the internal airflow channel of the air distribution module. The internal airflow channel of the air distribution module is connected to the internal cavity of the shape memory alloy valve. The compression assembly includes a cup fixing seat with air holes, connecting the cavity of the base with the internal cavity of the air pump cup, allowing gas in the cavity of the base to enter the internal cavity of the air pump cup.

[0019] The integrated shape memory alloy pump valve module of this invention features blades on its internal transmission components. During pump and valve inflation, external airflow is accelerated into the drive mechanism by the rotation of the blades and discharged through the internal airflow channel. Since the drive mechanism is close to the thermo-actuated shape memory alloy, the ambient temperature of the thermo-actuated shape memory alloy is reduced, thus preventing the thermo-actuated shape memory alloy from being affected by the drive mechanism. This reduces or prevents malfunctions caused by the heat generated by the drive mechanism, effectively preventing product failure due to excessive heat during operation. This significantly improves the working efficiency of the integrated shape memory alloy pump valve module and extends the service life of the thermo-actuated shape memory alloy. Furthermore, the rotation of the blades also assists the compression component in drawing in air, enhancing the pump valve's performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external shape of the integrated shape memory alloy pump valve module according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the external shape of the pump valve module according to an embodiment of the present invention.

[0022] Figure 3 This is an exploded view of the upper part of the integrated shape memory alloy pump valve module according to an embodiment of the present invention.

[0023] Figure 4 This is an exploded view of the lower part of the integrated shape memory alloy pump valve module according to an embodiment of the present invention.

[0024] Figure 5 This is an exploded schematic diagram of the casing according to an embodiment of the present invention.

[0025] Figure 6 This is a cross-sectional schematic diagram of the pump and valve module for heat dissipation inside the air intake pump and valve module between the base and the drive mechanism in an embodiment of the present invention.

[0026] Figure 7 This is a magnified view of part A in section 6.

[0027] Figure 8 This is a cross-sectional schematic diagram of the pump valve module that provides air intake to the pump valve module for heat dissipation in an embodiment of the present invention.

[0028] Figure 9 This is a cross-sectional schematic diagram of the pump valve module for heat dissipation inside the pump valve module with air intake on the side of the base in an embodiment of the present invention.

[0029] Figure 10 This is a cross-sectional schematic diagram of the pump valve module with air intake pipe configured on the side of the base for heat dissipation inside the pump valve module, according to an embodiment of the present invention.

[0030] Figure 11This is a cross-sectional schematic diagram of the pump valve module inside the base side air intake pump valve module and the pump valve module that provides heat to the actuating alloy from the valve core position for heat dissipation in an embodiment of the present invention.

[0031] Figure 12 yes Figure 11 A magnified view of part B in the middle section.

[0032] Figure 13 This is a cross-sectional schematic diagram of the pump valve module inside the base side air intake pump valve module and the pump valve module that heats the actuating alloy from the base side for heat dissipation in an embodiment of the present invention.

[0033] Figure 14 yes Figure 13 A magnified view of part C in the middle.

[0034] Figures 15 to 17 This is a schematic diagram of a torsion shaft with different numbers of blades according to an embodiment of the present invention.

[0035] Figure 18 This is a perspective view of a torsion shaft according to an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100-Integrated shape memory alloy pump and valve module; 101-Housing; 102-Shape memory alloy valve; 103-Gas distribution module; 104-Compression assembly; 105-Base; 106-Thermoactor shape memory alloy; 107-Terminal connector; 108-Guide rail; 109-Torsion shaft; 110-Drive mechanism; 111-End cap; 112-Electrical control module; 113-Pump and valve connector; 114-High temperature zone of drive mechanism; 115-First airflow inlet; 116-Second airflow inlet; 117-Third airflow inlet; 118-Oscillating assembly; 119-Connecting shaft; 120-Inlet pipe; 121-Top heat dissipation hole; 122-Heat dissipation channel; 123-Side heat dissipation hole; 124-Air supply device. 1021-Air nozzle, 1022-Valve body, 1023-Valve core mounting plate, 1024-Valve core, 1025-Spring component, 1026-Seal component, 1027-Valve cavity, 1041-Air pump top cover, 1042-Air pump flat gasket, 1043-Air pump cup, 1044 Cup fixing seat, 1051-Guide limiting groove, 1091-Blade, 1092-Torsion shaft rotation center, 1093-Angled hole, 1011-First housing, 1012-Second housing. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] See Figures 1 to 18As shown in the exemplary embodiment of this application, the integrated shape memory alloy pump valve module 100 includes:

[0040] The housing 101 has a pump and valve module arranged inside it. The pump and valve module includes a shape memory alloy valve 102 driven by a thermally actuated shape memory alloy 106, a gas source for providing compressed gas, and an electronic control module 112 for at least providing an electrical connection to the shape memory alloy valve 102.

[0041] The air source includes a drive mechanism 110, a base 105 disposed on the output shaft side of the drive mechanism 110, a transmission component installed in the space of the base 105 and rotatably connected to the output shaft end of the drive mechanism, a compression component 104 disposed on the side of the base 105 away from the drive mechanism 110 and connected to the transmission component, and an air distribution module 103 communicating with the air outlet end of the compression component 104. The shape memory alloy valve 102 is connected to the air distribution module 103.

[0042] At least one blade 1091 is provided on the rotatable wall of the transmission component. The blade has a three-dimensional spatial curved surface and is configured to generate a pressure difference on both sides of the three-dimensional spatial curved surface when it rotates synchronously with the transmission component. This causes the gas inside the housing 101 to accelerate from the air inlet of the air source into the space of the base 105 and generate turbulence.

[0043] In this embodiment, when the pump valve is operating, under the drive of the drive mechanism 110, as the blades 1091 rotate following the transmission assembly, the external airflow accelerates into the pump valve module through the air source's intake, dissipating the heat generated by the drive mechanism 110 (accumulated in the high-temperature zone 114 of the drive mechanism) through the effective internal airflow channel. This effectively reduces the heat generated by the drive mechanism, preventing the temperature of the thermally actuated shape memory alloy near the drive mechanism from rising. Consequently, the temperature of the thermally actuated shape memory alloy near the drive mechanism is not affected by the operating temperature of the drive mechanism, thus preventing fluctuations. Simultaneously, the rotation of the blades 1091 also assists the compression assembly 104 in drawing in air, improving the pump valve module's performance. For example... Figure 6 , Figures 8-11 as well as Figure 13 As shown, the gas inside the gas source flows in the high-temperature zone 114 of the drive mechanism, as indicated by the thick arrow in the figure, which can carry away the heat from the high-temperature zone 114 of the drive mechanism.

[0044] In one embodiment, the pump-valve module has heat dissipation holes on the side near the thermo-mechanical shape memory alloy 106. These holes allow gas in the space of the base 105 to be accelerated and discharged from one side of the pump-valve module towards the thermo-mechanical shape memory alloy 106 when the blades 1091 rotate synchronously under the drive of the drive mechanism 110, thus dissipating heat from the thermo-mechanical shape memory alloy 106. Specifically, as... Figures 13-14 As shown, the heat dissipation holes include side heat dissipation holes 123 formed by openings in the side wall of the housing of the base 105.

[0045] In one embodiment, the top heat dissipation hole includes a top heat dissipation hole formed by opening an opening on the end face of the air distribution module 103 away from the base 105, such as... Figures 11-12 As shown, the top heat dissipation hole communicates with the internal space of the base 105 via a heat dissipation channel 122 formed inside the air distribution module 103 and the compression assembly 104. Further, as... Figures 11-12 As shown, the top heat dissipation hole may further include an opening on the guide rail 108 arranged near the valve core 1024 for the thermally actuated shape memory alloy 106 as a top heat dissipation hole 121 and forming an airflow channel inside it, which communicates with the top heat dissipation hole on the gas distribution module 103 to form a heat dissipation channel 122 for exhaust heat dissipation.

[0046] Under the above heat dissipation hole technical solution, the airflow inside the base 105 can be blown outward through the side heat dissipation hole 123 to dissipate heat on the outer thermally actuated memory alloy 106, or the airflow can flow along the axial direction of the pump valve module through the top heat dissipation hole 121 and the heat dissipation channel 122 to the valve core 1024, thereby blowing air to dissipate heat on the thermally actuated memory alloy 106 at the position where the valve core 1024 is connected to the thermally actuated memory alloy 106. This can effectively reduce the surface temperature of the thermally actuated memory alloy 106, thereby preventing the thermally actuated memory alloy 106 from malfunctioning due to high temperature to a certain extent. The heat dissipation channel 122 is composed of the channel located in the compression component 104 and the corresponding channel inside the air distribution module 103, or it is formed by connecting and communicating the channel located in the compression component 104 and the corresponding channel inside the air distribution module 103 with the channel inside the guide rail 108.

[0047] In one embodiment, such as Figure 11 , Figure 13 As shown, the top heat dissipation hole 121 formed by the opening on the guide rail 108 is located on the side of the connection position between the valve core 1024 of the shape memory alloy valve 102 and the thermo-actuated shape memory alloy 106 and the valve core 1024. In this scheme, the internal airflow of the pump valve module is discharged from the top heat dissipation hole 121 and can be directly blown towards the operating end of the valve core 1024, that is, the end connected to the thermo-actuated shape memory alloy 106, thereby realizing the blowing and heat dissipation of the thermo-actuated shape memory alloy 106. In this application, the valve core 1024 moves in a direction perpendicular to the moving direction of the thermo-actuated shape memory alloy 106 to realize the inflation state, pressure holding state, or deflation state of the gas-using device. The gas-using device is an air bag or air bladder, etc. Figure 11 , 13As shown, the gas inside the gas source flows in the high-temperature zone 114 of the drive mechanism, that is, in the internal cavity of the base 105, as indicated by the thick arrow in the figure. This can carry away the heat from the high-temperature zone 114 of the drive mechanism, and then discharge from the top and side of the gas source in the direction of flow indicated by the thick arrow, thereby realizing the function of blowing air to dissipate heat and cool down the thermally actuated shape memory alloy 106.

[0048] In one embodiment, such as Figure 10 As shown, an air inlet is provided on the side of the housing 101 away from the shape memory alloy valve 102. The air inlet is connected to the air inlet pipe 120, which is connected to the external space of the vehicle seat, so as to introduce low-temperature gas from the external space into the interior of the housing 101. This can more effectively achieve cooling or heat dissipation inside the pump valve module, and achieve better diffusion or internal temperature reduction.

[0049] In one embodiment, the transmission assembly includes a torsion shaft 109, on the outer side wall of which at least one blade 1091 is arranged. The blade 1091 can be one, two or three symmetrically arranged, four, etc., and is not specifically limited. Figures 15 to 18 As shown.

[0050] like Figure 6 , Figures 8-11 as well as Figure 13 As shown, the transmission assembly described in this application further includes a swing assembly 118. The swing assembly 118 is connected to the torsion shaft 109 via a connecting shaft 119. The torsion shaft has an oblique hole 1093 (its axis is arranged at a preset angle relative to the rotation center 1092 of the torsion shaft) to mount the connecting shaft 119. When the torsion shaft 109 rotates synchronously under the drive of the drive mechanism 110, the swing assembly 118 is driven to move by the action of the obliquely arranged connecting shaft 119, thereby driving the compression assembly 104 to move, realizing the intake and inflation of the pump valve module. In this application, the drive mechanism 110 includes a motor.

[0051] In one embodiment, such as Figure 6 As shown, the air intake includes a first airflow inlet disposed on the outer side between the base plate of the base 105 and the outer shell end face of the drive mechanism 110. A first air passage communicating with the first airflow inlet is provided between the base plate of the base 105 and the outer shell end face of the drive mechanism 110. A second air passage connecting the first air passage is formed at the connection between the outer wall of the output shaft of the drive mechanism 110 and the base plate of the base 105. The second air passage is communicating with the internal cavity of the air source. With this solution, the airflow inside the housing can enter the internal cavity of the base from the side of the pump valve module.

[0052] In one embodiment, such as Figure 8As shown, the air intake includes a second airflow inlet on the outer end face of the drive mechanism 110 near the base plate of the base 105. An airflow matching inlet is arranged on the base plate of the base 105 corresponding to the second airflow inlet 116. The second airflow inlet on the outer end face of the drive mechanism 110 relative to the base plate of the base 105 facilitates the entry of gas from the bottom of the base into the internal cavity of the base.

[0053] In one embodiment, such as Figure 9 As shown, the air intake includes a third airflow inlet disposed on the side wall of the base 105, and the third airflow inlet is located on the side of the blade 1091 near the drive mechanism 110, i.e., the side of the negative pressure area generated by rotation. By providing the third airflow inlet on the side wall of the base 105, the gas inside the housing can enter the internal cavity of the base from the side wall of the base.

[0054] In this application, an air intake is formed by opening an opening or pre-set airflow inlet on the side of the pump valve module and / or the end face of the drive mechanism 110 near the outer shell of the base 105. By rotating the blades, the gas from inside the shell is accelerated to enter the internal cavity of the base through the air intake on the side of the pump valve module and / or the end face of the drive mechanism 110 near the outer shell of the base 105. Turbulence is generated in the space of the base 105 and flows towards the internal space of the cup assembly 1043. The gas is discharged into the gas-using device 124, such as an air bag or air bladder, through the air nozzle 21 connected to the shape memory alloy valve.

[0055] In one embodiment, such as Figure 6 , Figures 8-11 as well as Figure 13 As shown, the compression assembly 104 uses an air pump, which includes an air pump cup 1043, an air pump flat gasket 1042, and an air pump top cover 1041. The air pump flat gasket 1042 is arranged between the air pump cup 1043 and the air pump top cover 1041. Air pump air outlets are arranged on the air pump flat gasket 1042 and the air pump top cover 1041, connecting the internal cavity of the air pump cup 1043 with the internal airflow channel of the air distribution module 103. The internal airflow channel of the air distribution module 103 is connected to the internal cavity of the shape memory alloy valve 102.

[0056] In one embodiment, such as Figure 6 , Figures 8-11 as well as Figure 13As shown, the compression assembly 104 includes a cup holder 1044. The cup holder 1044 has air holes inside its side wall, which connect the cavity of the base 105 with the internal cavity of the air pump cup 1043, allowing the gas in the cavity of the base 105 to enter the internal cavity of the air pump cup 1043. Through the above technical solution, the gas entering from the air inlet of the air source can enter the internal cavity of the air pump cup 1043 from the cavity of the base (105), and then be discharged from the internal cavity of the air pump cup 1043 towards the air distribution module 103, and finally enter the air nozzle 1021 and be discharged into the air-using device 124, such as an air bag or air bladder.

[0057] In one embodiment, such as Figure 6 , Figures 8-11 as well as Figure 13 As shown, the shape memory alloy valve 102 includes a valve body 1022, and a valve core 1024 is mounted in the valve body 1022 via a valve core mounting plate 1023. The top of the valve body 1022 is connected to an air nozzle 1021, which in turn connects to a gas-using device 124, such as an airbag or air bag, for inflating the airbag or air bag. The valve body 1022 described in this application has a valve cavity 1027, which communicates with the gas distribution module 103 and the valve core cavity where the valve core is located. When the compression assembly 104 is activated, during inflation, the airflow enters the valve cavity 1027 from the compression assembly 104 via the gas distribution module 103. When the valve core 1024 is open and in an inflated state, the airflow enters the air nozzle 1021 from the valve cavity and valve core cavity, thus inflating the gas-using device 124. The valve core 1024 is provided with a spring 1025 for resetting the valve core 1024, and a sealing element 1026 is provided on the valve core 1024 for sealing between the valve core and the valve core cavity to prevent air leakage.

[0058] In one embodiment, such as Figure 2 , Figure 3 As shown, the thermo-mechanical memory alloy 106 consists of multiple linear strands, radially spaced apart and arranged on the outside of the drive mechanism 110. The end of each thermo-mechanical memory alloy 106 furthest from the electronic control module 112 is connected to the valve core 1024 of a memory alloy valve 102. The end of each thermo-mechanical memory alloy 106 closest to the electronic control module 112 is connected to a terminal connector 107, and each terminal connector 107 is electrically connected to the electronic control module 112. The electronic control module 112 in this application includes a circuit board. The circuit board is used to control the heating of the thermo-mechanical memory alloy according to a preset control program, thereby controlling the on / off state of the memory alloy valve controlled by the thermo-mechanical memory alloy, and thus controlling the air inlet and outlet of the connected air nozzle 1021, enabling operations such as inflation, deflation, or pressure maintenance of the airbag or air bag.

[0059] In one embodiment, such as Figure 2 , Figure 3 As shown, a plurality of guide and limiting grooves 1051 are arranged on the outer side wall of the base 105. The length direction of the guide and limiting grooves 1051 is consistent with the axial direction of the base 105. Near the end of the guide and limiting groove 1051 close to the shape memory alloy valve 102, a guide rail 108 is arranged to guide each thermo-actuated shape memory alloy 106. At least a portion of the filament of each thermo-actuated shape memory alloy 106 is guided and cooperated with the guide and limiting groove 1051 and the guide rail 108 to guide or limit the movement of the thermo-actuated shape memory alloy, so that the thermo-actuated shape memory alloy can be displaced along the axial direction of the base 105, and the valve core 1022 of the thermo-actuated shape memory alloy valve 102 is controlled to move in a direction perpendicular to the moving direction of the thermo-actuated shape memory alloy 106, so as to realize the gas-using device in the charging state, pressure-holding state, or degassing state.

[0060] In one embodiment, such as Figure 1 , Figure 5 As shown, the housing 101 includes a first housing 1011 and a second housing 1012, which are detachably connected. After the first housing 1011 and the second housing 1012 are connected, a cavity is formed inside them. The pump valve module is arranged in the cavity. In one embodiment, the air intake pipe 120 is connected to the first housing 1011 and / or the second housing 1012.

[0061] In this application, the drive mechanism 110 of the air source, such as the motor, has an end cover 111 at its bottom, and a pump valve connector 113 is connected to the end cover for connection with an external control module. Figure 4 As shown.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0063] Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the invention.

[0064] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated shape memory alloy pump and valve module, characterized in that, include: The housing (101) has a pump valve module arranged inside it. The pump valve module includes a shape memory alloy valve (102) driven by a thermally actuated shape memory alloy (106), a gas source for providing compressed gas, and an electronic control module (112) for providing an electrical connection to the shape memory alloy valve (102). The gas source includes a drive mechanism (110), a base (105) located on the output shaft side of the drive mechanism (110), a transmission assembly installed in the space of the base (105) and rotatably connected to the output shaft end of the drive mechanism, a compression assembly (104) located on the side of the base (105) away from the drive mechanism (110) and connected to the transmission assembly, and a gas distribution module (103) connected to the gas outlet end of the compression assembly (104). The shape memory alloy valve (102) is connected to the gas distribution module (103). At least one blade (1091) is provided on the rotatable wall of the transmission assembly. It has a three-dimensional spatial curved surface and is configured to generate a pressure difference on both sides of the three-dimensional spatial curved surface when it rotates synchronously with the transmission assembly, so that the gas inside the housing (101) is accelerated from the air inlet of the air source into the space of the base (105) and generates turbulence.

2. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The pump valve module has a heat dissipation hole on the side near the thermo-actuated memory alloy (106) so that when the blade (1091) rotates, the gas in the space of the base (105) is discharged from the pump valve module and blown toward the thermo-actuated memory alloy (106) to dissipate heat for the thermo-actuated memory alloy (106).

3. The integrated shape memory alloy pump valve module according to claim 2, characterized in that, The heat dissipation holes include side heat dissipation holes (123), which are formed by openings on the side wall of the housing of the base (105).

4. The integrated shape memory alloy pump valve module according to claim 2, characterized in that, The heat dissipation hole includes a top heat dissipation hole. The top heat dissipation hole is formed by opening a hole on the end face of the gas distribution module (103) away from the base (105). The top heat dissipation hole communicates with the internal space of the base (105) through the heat dissipation channel (122) formed inside the gas distribution module (103) and the compression assembly (104). The top heat dissipation hole is located on one side of the position where the valve core (1024) of the memory alloy valve (102) is connected to the thermally actuated memory alloy (106).

5. The integrated shape memory alloy pump and valve module according to claim 1, characterized in that, The housing (101) is provided with an air inlet, which is connected to an air inlet pipe (120). The air inlet pipe (120) is connected to the external space of the vehicle seat to introduce low-temperature gas from the external space into the interior of the housing (101).

6. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The transmission assembly includes a torsion shaft (109) connected to the drive shaft of the drive mechanism (110), and at least one blade (1091) is arranged on the outer side wall of the torsion shaft (109).

7. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The air intake includes a first airflow inlet (115) disposed on the outer side between the base plate of the base (105) and the outer end face of the housing of the drive mechanism (110).

8. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The air intake includes a second airflow inlet (116) provided on the outer end face of the base plate of the drive mechanism (110) near the base (105), and an airflow matching inlet is arranged on the base plate of the base (105) corresponding to the second airflow inlet (116).

9. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The air intake includes a third airflow inlet (117) disposed on the side wall of the base (105), and the third airflow inlet (117) is located on the side of the negative pressure area generated by the rotation of the blade (1091).

10. The integrated shape memory alloy pump valve module according to claim 1, characterized in that, The compression assembly (104) includes an air pump cup (1043), an air pump flat pad (1042), and an air pump top cover (1041). The air pump flat pad (1042) is arranged between the air pump cup (1043) and the air pump top cover (1041). Air pump air outlets are arranged on the air pump flat pad (1042) and the air pump top cover (1041), connecting the internal cavity of the air pump cup (1043) with the internal airflow channel of the gas distribution module (103). The internal airflow channel of the gas distribution module (103) is connected to the internal cavity of the shape memory alloy valve (102). The compression assembly (104) includes a cup fixing seat with air holes, connecting the cavity of the base (105) with the internal cavity of the air pump cup (1043), allowing the gas in the cavity of the base (105) to enter the internal cavity of the air pump cup (1043).

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