CN118208444A - Fluid control device - Google Patents

Abstract

The application provides a fluid control device, which comprises a shell, a driving part, a valve core, an impeller and a rotor assembly, wherein the shell comprises a first shell part, a second shell part and a third shell part, the third shell part comprises a first wall part and a second wall part, the fluid control device is provided with a first accommodating cavity and a second accommodating cavity, the wall part forming the first accommodating cavity comprises the first shell part and the first wall part, and the wall part forming the second accommodating cavity comprises the second shell part and the second wall part; at least a portion of the drive member is located in the first receiving chamber and the valve cartridge, impeller and rotor assembly are located in the second receiving chamber. The lower housing accommodating the driving member and the upper housing accommodating the valve element and the impeller share a third housing portion, simplifying the structure of the fluid control device.

Description

Fluid control device

Technical Field

The application relates to the technical field of fluid control, in particular to a fluid control device.

Background

The thermal management system includes a plurality of functional components including a drive component, a pump component, and a valve component, each having a different housing corresponding thereto, and each housing including at least an upper housing and a lower housing, resulting in a greater number of housings.

Disclosure of Invention

The invention aims to provide a fluid control device with a simplified structure.

An embodiment of the present application provides a fluid control device including a housing including a first housing portion, a second housing portion, a third housing portion, at least a portion of which is located on one side of the third housing portion in a height direction of the housing, at least a portion of which is located on the other side of the third housing portion, a driving part, a spool, an impeller, and a rotor assembly, the fluid control device having a first accommodation chamber and a second accommodation chamber, a wall portion forming the first accommodation chamber including the first housing portion and the first wall portion, and a wall portion forming the second accommodation chamber including the second housing portion and the second wall portion; at least a portion of the drive member is located in the first receiving chamber.

In the fluid control device provided by the application, the wall part forming the first accommodating cavity comprises the first wall part of the third shell part, the wall part forming the second accommodating cavity comprises the second wall part of the third shell part, and compared with the related art, the lower shell accommodating the driving part and the upper shell accommodating the valve core and the impeller share one third shell, so that the number of the shells is reduced.

Drawings

FIG. 1 is a schematic perspective view of a fluid control device according to the present application;

FIG. 2 is a schematic view of another perspective view of the fluid control device of the present application.

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2;

FIG. 4 is a cross-sectional view of a housing of the fluid control device of the present application;

FIG. 5 is an enlarged view of a portion of FIG. 3A;

FIG. 6 is an enlarged view of a portion of yet another embodiment of A in FIG. 3;

FIG. 7 is a schematic view of a further view of the fluid control device of the present application;

FIG. 8 is a cross-sectional view taken along the direction D-D in FIG. 7;

FIG. 9 is a schematic perspective view of a valve element of the fluid control device of the present application;

FIG. 10 is another schematic view of a valve cartridge of the fluid control device of the present application;

FIG. 11 is a cross-sectional view taken in the direction B-B of FIG. 10;

FIG. 12 is a schematic perspective view of a pump assembly of the fluid control device of the present application;

FIG. 13 is a cross-sectional view taken along the direction C-C in FIG. 12;

fig. 14 is a schematic perspective view of a third housing according to the present application;

FIG. 15 is a schematic view of a third housing of the present application from another perspective;

FIG. 16 is a cross-sectional view taken along the direction E-E in FIG. 15;

Fig. 17 is an exploded view of the fluid control device of the present application.

The label specification in the drawings: 100. a housing; 10. a first housing portion; 101. a first accommodation chamber; 102. a first end; 103. a first axially extending segment; 1021. a first end face; 1022. a second end face; 20. a second housing portion; 201. a second accommodation chamber; 202. a second end; 203. a second axial extension; 204. a flow port; 205. a fourth accommodation chamber; 30. a third housing portion; 31. a main body portion; 311. a first wall portion; 312. a second wall portion; 32. a first boss; 33. a second protruding portion; 34. a third boss; 341. a third accommodation chamber; 35. a limit part; 351. a groove; 36. a first through hole; 37. a first support frame; 371. a support; 372. a reinforcing member; 373. a mating portion; 38. a second support frame; 381. a support part; 382. reinforcing ribs;

40. a driving part; 41. a motor; 42. a transmission assembly; 43. a circuit board;

200. A stator assembly; 300. a pin member;

50. a pump member; 51. an impeller; 52. a second through hole; 53. a rotor assembly; 531. a third fitting hole;

60. A valve member; 61. a valve core; 611. a first fitting hole; 612. a side vertical plate; 613. a first flow passage; 614. a second flow passage; 62. a seal; 63. the second limiting surface;

70. A rotating shaft; 71. a first connection portion; 72. a second connecting portion; 73. a third connecting portion; 74. a first limiting surface;

75. a first step portion; 76. a second step portion;

80. And (3) sealing rings.

Detailed Description

The application will now be described in further detail with reference to the drawings and to specific examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

It should be understood that although the first, second, third, fourth, etc. may be used to describe various information in the present application, the information should not be limited to these descriptions. These terms are only used to distinguish one type of information from another. Plural means two or more. Embodiments of the application may be complementary to each other without conflict.

Referring to fig. 1-12, in an embodiment of the present application, a fluid control device includes a housing 100, a drive member 40, a valve member 60, and a pump member 50, wherein in operation of the fluid control device, the valve member 60 is operable to change the direction of fluid flow and the pump member 50 is operable to power the flow of fluid, the drive member 40 controlling the operation of the valve member 60 and the pump member 50. Referring to fig. 2 and 3, the fluid control device includes a housing 100, a driving member 40, a valve core 61, an impeller 51, and a rotor assembly 53, wherein the housing 100 includes a first housing part 10, a second housing part 20, and a third housing part 30, the first housing part 10 is positioned at one side of the third housing part 30, the second housing part 20 is positioned at the other side of the third housing part 30, the first housing part 10 is fixedly connected with the third housing part 30, and the second housing part 20 is fixedly connected with the third housing part 30 along the height direction of the housing 100; the third housing part 30 includes a main body part 31, a wall part defining the main body part 31 close to the first housing part 10 is a first wall part 311, a wall part defining the main body part 31 close to the second housing part 20 is a second wall part 312, the fluid control device has a first accommodation chamber 101 and a second accommodation chamber 201, the first housing part 10 has an opening in a direction toward the third housing part 30, the second housing part 20 has an opening in a direction toward the third housing part 30, the wall part forming the first accommodation chamber 101 includes an inner wall part of the first housing part 10 and the first wall part 311, and the wall part of the second accommodation chamber 201 includes an inner wall part of the second housing part 20 and the second wall part 312. At least part of the driving member 40 is located in the first accommodation chamber 101, the valve core 60, the impeller 51, and the rotor assembly 53 are located in the second accommodation chamber 201, and the valve core 61, the impeller 51, and the rotor assembly 53 are arranged along the axis of the second accommodation chamber 201. . In the present embodiment, the valve core 61 is located closer to the third housing part 30 than the impeller 53 in the height direction of the housing 100, and of course, in other embodiments, the impeller 53 is located closer to the third housing part 30 than the valve core 61 in the height direction of the housing 100. In the present application, the first housing part 10 and the second housing part 20 share one third housing part 30, and it is also understood that the third housing part and the third housing part 10 are fixedly connected to the third housing part 30, the second housing part 20 is fixedly connected to the third housing part 30, and the three housing parts define two accommodating chambers, so that the structure of the fluid control device is relatively simple.

The fluid control device further comprises a rotating shaft 70, one end of the rotating shaft 70 is in transmission connection with the driving component 40, and the other end of the rotating shaft 70 is in limiting connection with the bottom of the second shell part 20. The driving part 40 comprises a motor 41 and a transmission assembly 42; wherein the motor 41 and the transmission assembly 42 are located in the first accommodating chamber 101, the motor 41 is in transmission connection with the transmission assembly 42, and the transmission assembly 42 is in transmission connection with the valve member 60. The fluid control device further comprises a stator assembly 200, the pump member 50 comprising an impeller 51 and a rotor assembly 53, the impeller 51 and the rotor assembly 53 being fixedly connected or in a limited or driving connection. In operation, the fluid control device drives the valve member 60 to rotate to control the flow direction and flow rate of the fluid, and the rotor assembly 53 drives the impeller 510 to rotate. It will be appreciated that in some embodiments, the drive member 40 may not include the transmission assembly 42, and the output shaft of the motor 41 is the shaft 70.

Referring to fig. 2, 7 and 8, the valve member 60 includes a valve body 61 and a seal 62, one end of the valve body 61 abuts against the third housing portion 30, the other end of the valve body 61 abuts against the impeller 51, and the seal 62 is located between the valve body 61 and the inner wall portion of the second housing portion 20, that is, the seal 62 is located on the outer periphery of the valve body 61. The valve core 61 includes a plurality of ports, in this embodiment, the sidewall of the valve core 61 includes 4 ports, the bottom of the valve core 61 has a port, the port located at the bottom of the valve core 61 is connected with the outlet of the pump component 50, the valve core 61 further includes a first flow channel 613 and a second flow channel 614, wherein the first flow channel 613 communicates with two ports on the sidewall, the second flow channel 614 communicates with two ports on the sidewall of the valve core 61 and the port at the bottom of the valve core 61, two sides of the first flow channel 613 and the second flow channel 614 have side stand plates 612, the upper end surface of the side stand plates 612 is fixedly connected with the top of the valve core 61, the lower end surface of the side stand plates 612 is fixedly connected with the bottom of the valve core 61, the side stand plates 612 can not only improve the strength of the valve core 61, but also prevent the two flow channels from communicating with each other at intervals. Accordingly, the second housing portion 20 has at least 2 flow ports 204, with one port 204 communicating with the valve member 60 and the other port 204 communicating with the outlet of the pump member 50. In this embodiment, the second housing part 20 has 5 flow openings 204, wherein 4 flow openings 204 correspond to the positions of 4 openings on the valve core 61, wherein the axes of the 4 openings are on the same horizontal plane, and the other flow opening 204 communicates with the outlet of the pump member 50, and the axis of the flow opening 204 is near the bottom of the second housing part 20 with respect to the axis of the 4 flow openings 204. By the rotation of the valve core 61, communication and closure of the interface on the second housing part 20 with the port on the valve core 61 are achieved, thereby effecting a change in the direction of fluid flow.

The valve core 61 is provided with a first assembly hole 611, the first assembly hole 611 penetrates through the top and the bottom of the valve core 61 along the axial direction of the valve core 61, the valve core 61 is in limit connection or fixed connection with the rotating shaft 70, in particular, the rotating shaft 70 is provided with a first limit surface 74, the wall part forming the first assembly hole 611 is provided with a second limit surface 63, and the first limit surface 74 and the second limit surface 63 are mutually matched to realize radial positioning of the valve core 61. The valve core 61 is in limit connection or fixed connection with the rotating shaft 70, and the rotating shaft 70 drives the valve core 61 to rotate, so that the change and the opening and closing of the valve port are realized. The limiting arrangement of the application means that one part can limit the position of the other part, and prevent or reduce the movement, rotation or deflection of the parts.

The pump assembly 50 includes an impeller 51, wherein the impeller 51 is fixedly or limitedly connected to a rotor assembly 53 and a stator assembly 200 is positioned on the outer periphery of the rotor assembly 53. Specifically, the stator assembly 200 and the rotor assembly 53 are located at the bottom of the second housing portion 20, the second housing portion 20 includes a fourth accommodating cavity 205, the stator assembly 200 is located in the fourth accommodating cavity 205, the rotor assembly 53 is located in the second accommodating cavity 201, and the stator assembly 200 is fixedly connected or limitedly connected with the second housing portion 20, or the stator assembly 200 and the second housing portion 20 are injection-molded to form an integral structure. The rotor assembly 53 is located at the inner periphery of the stator assembly 200, and one end of the rotor assembly 53 is in limit connection or fixed connection with the impeller 51 along the height direction of the housing 100, and the other end of the rotor assembly 53 is in limit connection with the bottom of the second housing part 20, and the bottom of the second housing part 20 limits the axial displacement of the rotor assembly 53. The driving component 40 further includes a circuit board 43, the circuit board 43 is located in the first accommodating cavity 101, the circuit board 43 is electrically connected or signal-connected with the stator component 200, as shown in fig. 6, the circuit board 43 is electrically connected with the stator component 200 through a pin component 300, after one end of the pin component 300 is welded and fixed with the stator component 200, the pin component and the stator component 200 are injection-molded to form an integral structure, the other end of the pin component 300 is connected with the circuit board 43, after the fluid control device is electrified, an excitation magnetic field is generated, and the rotor component 53 drives the impeller 51 to rotate. The impeller 51 has a second through hole 52, and the rotor assembly 53 has a third fitting hole 531; one end of the rotation shaft 70 passes through the first through hole 36, the first fitting hole 611, the second through hole 52, the third fitting hole 531 on the third housing section 30 to the bottom of the second housing section 20. The shaft 70 limits the radial displacement of the rotor assembly 53.

Referring to fig. 10 and 11, the third housing part 30 of the present invention further includes a first boss 32, a second boss 33, and a third boss 34, where the main body 31, the first boss 32, the second boss 33, and the third boss 34 are integrally formed, the main body 31 is in a plate structure, the first boss 32 is protruded toward the first housing part 10 relative to a first wall 311 located on the main body 31, the first boss 32 is continuously disposed in a circumferential direction of the main body 31, the first housing part 10 includes a first axial extension 103, an end portion of the first axial extension 103, which is relatively close to the third housing part 30, is defined as a first end portion 102, the first boss 32 is fixedly connected with the first end portion 102 of the first housing part 10, and the fixed connection may be welding, bonding, clamping, or the like, in this embodiment, the first boss 32 is connected with the first end portion 102 of the first housing part 10 by laser welding. Specifically, the first housing part 10 includes a limiting part 35, in this embodiment, the limiting part 35 is formed on a step of the first end part 102, the cross section of the limiting part 35 is L-shaped, that is, the first end part 102 has a first end surface 1021 and a second end surface 1022, along the height direction of the housing 100, the first end surface 1021 is close to the third housing part 30 relative to the second end surface 1022, and the height difference between the first end surface 1021 and the second end surface 1022 forms a step, that is, the limiting part 35.

In other embodiments, as shown in the figures and drawings, the limiting portion 35 is formed in the groove 351 of the first end portion 102, the cross section of the limiting portion 35 is U-shaped, the groove 351 has an opening in the direction toward the third housing portion 30 along the height direction of the housing 100, and when assembled, the first protruding portion 32 is at least partially located in the limiting portion 35, and the inner wall portion of the limiting portion 35 contacts the outer wall portion of the first protruding portion 32. Or the stopper 35 is formed in the groove 351 of the first boss 32, and the groove 351 has an opening in a direction toward the first housing part 10 in the height direction of the housing 100.

It will be appreciated that the limiting portion 35 may be disposed on the first protruding portion 32, and the structure and shape of the limiting portion may be similar to or the same as those described above, or the limiting portion 35 may be disposed on both the first housing portion 10 and the third housing portion 30, which will not be described in detail.

The second protruding portion 33 is located opposite to the second wall portion 312 of the main body portion 31 and protrudes toward the second housing portion 20, the second protruding portion 33 is continuously disposed in the circumferential direction of the main body portion 31, the second housing portion 20 includes a second axial extension 203, an end portion of the second axial extension 203, which is relatively close to the third housing portion 30, is defined as a second end portion 202, and the second protruding portion 33 and the second end portion 202 are connected by laser welding. Specifically, the end surface of the second end portion 202 abuts against the second wall portion 312, the inner wall portion of the second end portion 202 abuts against the outer wall portion of the second protrusion portion 33, or the outer wall portion of the second end portion 202 abuts against the inner wall portion of the second protrusion portion 33, and the end portion of the second protrusion portion 33 abuts against the seal 62. In the present embodiment, the second protruding portion 33 is located near the center of the main body portion 31 with respect to the first protruding portion 32, but of course, in other embodiments, the first protruding portion 32 is located near the center of the main body portion 31 with respect to the second protruding portion 33, or the first protruding portion 32 is aligned with the second protruding portion 33 along the height direction of the housing 100. The first boss 32 is positioned and shaped relative to the first end 102 and the second boss 33 is positioned and shaped relative to the second end 202.

The third housing part 30 further includes a first through hole 36, and the first through hole 36 penetrates the first wall part 311 and the second wall part 312 of the main body part 31. In order to prevent fluid from entering the first receiving chamber 101 from the through hole, the operation of the driving part 40 is affected. The fluid control device further includes a seal ring 80, the seal ring 80 being located between the third housing portion 30 and the valve element 61, and a distance between both end surfaces in contact with the seal ring 80 being smaller than a thickness of the seal ring 80 in a free state. Specifically, the third protruding portion 34 of the third housing portion 30, the third protruding portion 34 protrudes toward the second housing portion 20 opposite to the second wall portion 312 located on the main body portion 31, one end surface of the third protruding portion 34 is fixedly connected to the second wall portion 312, the other end surface of the third protruding portion 34 extends in a direction away from the second wall portion 312, the first through hole 36 is located at an inner periphery of the forward projection of the third protruding portion 34 on the second wall portion 312, and the sealing ring 80 is located between the third protruding portion 34 and the rotating shaft 70. The fluid control device includes a third receiving chamber 341, and a seal ring 80 is disposed in the third receiving chamber 341, and a wall portion forming the third receiving chamber 341 includes an inner wall portion of the third protrusion portion 34, an outer wall portion of at least part of the rotation shaft 70, and a top wall portion of at least part of the valve body 61. In order to make the seal ring 80 have a deformation amount satisfying the requirement and improve the sealing performance of the seal ring 80, the joint between the top end of the valve body and the third protrusion 34 has a protrusion facing the third housing 30, and at least part of the protrusion is located in the third accommodating cavity 341 to press the seal ring, so that the seal ring has a very large compression deformation amount, thereby improving the sealing performance of the fluid control device. The sealing ring of the application can be a special-shaped sealing ring or an O-shaped sealing ring with an X-shaped section.

The third housing part 30 further includes a first supporting frame 37 and a second supporting frame 38, where the first supporting frame 37 and the second supporting frame 38 are both disposed on the first wall 311 of the main body part 31, that is, the first supporting frame 37 and the second supporting frame 38 are both protruding toward the first housing part 10 relative to the first wall 311, the first supporting frame 37 is fixedly connected with the main body part 31, and the second supporting frame 38 is fixedly connected with the main body part 31. The first supporting frame 37, the second supporting frame 38 and the main body 31 are of a split structure and are fixed by welding, bonding and the like; or, the first supporting frame 37, the second supporting frame 38 and the main body 31 are integrated; or, one of the first support 37 and the second support 38 is of a separate structure from the main body 31, and the other is of an integral structure with the main body 31.

In this embodiment, the first supporting frame 37 is used for supporting the motor 41, specifically, the first supporting frame 37 includes a supporting member 371 and a reinforcing member 372, in this embodiment, one end of the supporting member 371 is fixedly connected with the main body portion 31, the supporting member 371 includes a mating portion 373, the mating portion 373 is located at one end of the supporting member 371 far away from the main body portion 31, and the mating portion 373 abuts against an outer wall portion of the motor 41. In this embodiment, the sidewall of the reinforcement 372 is L-shaped, the sidewall of the reinforcement 372 is fixedly connected to the support 371, and the other sidewall of the reinforcement 372 is fixedly connected to the main body 31 for enhancing the strength of the support 371. The second supporting frame 38 is used for supporting the transmission assembly 42, and the transmission assembly 42 in this embodiment includes a plurality of gears, one gear corresponds to each second supporting frame 38; for example, the gears include a first gear, a second gear, a third gear; an output shaft of the motor 41 is in transmission connection with the first gear, the second gear is in transmission connection with the first gear, and the third gear is in transmission connection with the second gear; the third gear is in driving connection with the valve member 60, effecting rotation of the valve member 60. The second supporting frame 38 includes a supporting portion 381, one end of the supporting portion 381 is fixedly connected with the main body portion 31, the other end of the supporting portion 381 is rotatably connected with a gear, specifically, the supporting portion 381 is a cylinder, and at least a part of the gear is sleeved on the cylinder. The second support 38 further includes a reinforcing rib 382, one side wall of the reinforcing rib 382 is fixedly connected to the main body 31, and the other side wall of the reinforcing rib 382 is fixedly connected to the outer wall of the supporting portion 381. It will be appreciated that the second support 38 includes a plurality of ribs 382, and the plurality of ribs 382 are disposed circumferentially around the cylinder to enhance the strength of the second support 38.

In yet another aspect, embodiments of the present invention also provide a method of manufacturing a fluid control device.

As shown in fig. 12, a method for manufacturing a fluid control device according to an embodiment of the present invention is described below, including:

Providing a housing 100; the housing 100 includes a first housing portion 10, a second housing portion 20, and a third housing portion 30, the third housing portion 30 includes a main body portion 31, a wall portion defining the main body portion 31 close to the first housing portion 10 is a first wall portion 311, a wall portion defining the main body portion 31 close to the second housing portion 20 is a second wall portion 312, the fluid control device has a first accommodation chamber 101 and a second accommodation chamber 201, the first housing portion has an opening in a direction toward the third housing portion 30, the second housing portion has an opening in a direction toward the third housing portion 30, the wall portion forming the first accommodation chamber includes an inner wall portion of the first housing portion and the first wall portion, and the wall portion of the second accommodation chamber includes an inner wall portion of the second housing portion and the second wall portion.

Providing a stator assembly 200, a pin member 300, and a pump member 50; the stator assembly 200 and the pin member 300 are assembled and then are integrally molded with the second housing portion 20; the pump component 50 comprises a rotor component 53 and an impeller 51, wherein the rotor component 53 and the impeller 51 are arranged in a limiting way, and the pump component 50 is placed in the second accommodating cavity 201;

Specifically, the rotor assembly 53 is located in the second accommodating cavity 201 and is located at the inner periphery of the stator assembly 200, and along the height direction of the housing 100, one end of the rotor assembly 53 is in limited connection or fixed connection with the impeller 51, the other end of the rotor assembly 53 is in limited connection with the bottom of the second housing portion 20, and the bottom of the second housing portion 20 limits the axial displacement of the rotor assembly 53.

Providing a rotating shaft 70, wherein the rotating shaft 70 is in limit connection with the pump component 50;

Specifically, the rotating shaft 70 has a first connecting portion 71, a second connecting portion 72 and a third connecting portion 73, the first connecting portion 71 is located at one side of the second connecting portion 72, the third connecting portion 73 is located at the other side of the second connecting portion 72, the outer diameter of the second connecting portion 72 is larger than that of the first connecting portion 71, the outer diameter of the second connecting portion 72 is larger than that of the third connecting portion 73, a first step portion 75 is formed at a joint of the first connecting portion 71 and the second connecting portion 72, and a second step portion 76 is formed at a joint of the second connecting portion 72 and the third connecting portion 73; the impeller 51 has a second through hole 52, the second through hole 52 has an inner diameter larger than that of the second connecting portion 72, the rotor assembly 53 has a third fitting hole 531, the third connecting portion 73 of the rotary shaft 70 is located in the third fitting hole 531, specifically, the inner diameter of the third fitting hole 531 is smaller than the outer diameter of the second connecting portion 72 and larger than the outer diameter of the third connecting portion 73, that is, the second stepped portion 76 abuts against an end portion forming the third fitting hole 531, and the second stepped portion 76 limits axial displacement of the rotor assembly 53. The rotation shaft 70 passes through the second through hole 52 of the impeller 51, the third fitting hole 531 of the rotor assembly 53, to the bottom of the second housing portion 20.

Providing a valve component 60, wherein the valve component 60 is in limit connection with a rotating shaft 70;

Specifically, the valve member 60 includes a valve element 61 and a seal 62, the other end of the valve element 61 abuts against the impeller 51, and the seal 62 is located between the valve element 61 and the inner wall portion of the second housing portion 20, that is, the seal 62 is located at the outer periphery of the valve element 61. The valve core 61 is provided with a first assembly hole 611, the first assembly hole 611 penetrates through the top and the bottom of the valve core 61 along the axial direction of the valve core 61, the valve core 61 is in limit connection or fixed connection with the rotating shaft 70, at least part of the first connecting part 71 of the rotating shaft 70 is positioned in the first assembly hole 611, at least part of the second connecting part 72 of the rotating shaft 70 is positioned in the first assembly hole 611, correspondingly, the first assembly hole 611 is provided with a first section and a second section, the second section is close to the impeller 51 relative to the first section along the axial direction of the valve core 61, the inner diameter of the first section is identical with the outer diameter of the first connecting part 71, the inner diameter of the second section is identical with the outer diameter of the second connecting part 72, and the first step 75 of the rotating shaft 70 limits the axial displacement of the valve core 61. The rotating shaft 70 is provided with a first limiting surface 74, the wall part forming the first assembly hole 611 is provided with a second limiting surface 63, and the first limiting surface 74 and the second limiting surface 63 are mutually matched to realize radial positioning of the valve core 61. The bottom of the valve element 61 abuts against the end surface of the impeller 51, and the axial displacement of the impeller 51 is limited. A seal ring 80 is provided, the seal ring 80 is sleeved on the rotating shaft 70, and one end of the seal ring 80 abuts against the top of the valve core 61.

Providing a third housing part 30, the third housing part 30 being fixedly connected to the second housing part 20;

Specifically, the third housing part 30 of the present invention includes a main body part 31, a first protruding part 32, a second protruding part 33 and a third protruding part 34, where the main body part 31, the first protruding part 32, the second protruding part 33 and the third protruding part 34 are in an integral structure, the main body part 31 has a plate-shaped structure, an end surface close to the first housing part 10 is defined as a first wall part 311, an end surface close to the second housing part 20 is defined as a second wall part 312, the first protruding part 32 is located at the first wall part 311 of the main body part 31, the second protruding part 33 and the third protruding part 34 are located at the second wall part 312, the sealing ring 80 is located in a third accommodation formed by the third protruding part 34, an end surface of the second protruding part 33 abuts against an end surface of the sealing member 62, and an end surface of the second end part 202 abuts against the second wall part 312, and is fixedly connected by laser welding.

Providing a driving part 40;

specifically, the driving component 40 includes a motor 41 and a transmission assembly 42, the third housing portion 30 includes a first supporting frame 37 and a second supporting frame 38, the motor 41 is fixed or limited to the first supporting frame 37, and the transmission assembly 42 is fixed to the second supporting frame 38.

Providing a first housing part 10, the first housing part 10 being fixedly connected to a third housing part 30;

Specifically, the first housing part 10 has a first accommodating chamber 101, the first accommodating chamber 101 has a first end 102 in a direction toward the third housing part 30, and the first protruding part 32 on the third housing part 30 is connected to the first end 102 of the first housing part 10 by laser welding, and the welding is performed entirely to ensure air tightness.

In the manufacturing method of the fluid control device provided by the invention, the first shell part 10 and the second shell part 20 share the third shell part 30, the first shell part 10 and the third shell part 30 are connected through laser welding, and the second shell part 20 and the third shell part 30 are connected through laser welding, so that the manufacturing method of the fluid control device is simplified, and the assembly precision is improved.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the present invention may be modified or equivalent thereto without departing from the spirit and scope of the invention, and all such modifications and improvements thereof are intended to be included within the scope of the appended claims.

Claims (10)

1. A fluid control device comprising a housing (100), a drive member (40), a valve element (61), an impeller (51) and a rotor assembly (53), the housing (100) comprising a first housing part (10), a second housing part (20), a third housing part (30), along a height direction of the housing (100), at least part of the first housing part (10) being located on one side of the third housing part (30), at least part of the second housing part (20) being located on the other side of the third housing part (30), the third housing part (30) comprising a first wall part (311) and a second wall part (312), the fluid control device having a first accommodation chamber (101) and a second accommodation chamber (201), the wall part forming the first accommodation chamber (101) comprising the first housing part (10) and the first wall part (311), the wall part forming the second accommodation chamber (201) comprising the second housing part (20) and the second wall part (312); at least part of the driving component (40) is positioned in the first accommodating cavity (101), and the valve core (60), the impeller (51) and the rotor assembly (53) are positioned in the second accommodating cavity (201).

2. The fluid control device according to claim 1, characterized in that the valve core (61), the impeller (51), the rotor assembly (53) are arranged along the axis of the second accommodation chamber (201).

3. The fluid control device according to claim 2, wherein the third housing part (30) includes a first protruding part (32) of the main body part (31), the main body part (31) and the first protruding part (32) are integrally formed, the main body part (31) is in a plate-shaped structure, the first protruding part (32) protrudes toward the first housing part (10) relative to the first wall part (311), the first housing part (10) includes a first axial extension section (103), an end portion, which is relatively close to the third housing part (30), of the first axial extension section (103) is defined as a first end portion (102), the first protruding part (32) is fixedly connected with the first end portion (102), and at least one of the third housing part (30) and the first housing part (10) is fixedly connected with the driving member (40).

4. A fluid control device according to claim 3, wherein the third housing part (30) comprises a second protruding part (33), the second protruding part (33) being of unitary construction with the main body part (31), the first protruding part (32); the second protruding part (33) protrudes towards the second housing part (20) relative to the second wall part (312); the second housing part (20) comprises a second axial extension (203), and one end part of the second axial extension (203) relatively close to the third housing part (30) is defined as a second end part (202), and the outer wall part of the second protruding part (33) is abutted against the inner wall part of the second end part (202), or the inner wall part of the second protruding part (33) is abutted against the outer wall part of the second end part (202); the second end (202) is fixedly connected to the second wall (312).

5. The fluid control device according to claim 3 or 4, characterized in that the fluid control device comprises a limit portion (35), the limit portion (35) being located in one of the first housing portion (10) and the third housing portion (30), the limit portion (35) being formed in a stepped wall portion of the first end portion (102) of the first housing portion (10), or the limit portion (35) being formed in a stepped wall portion of the first protruding portion (32);

Or the limit part (35) is formed on a groove of the first end part (102), the groove is provided with an opening in a direction towards the third shell part (30), or the limit part (35) is formed on a groove (351) of the first protruding part (32), and the groove (351) is provided with an opening in a direction towards the first shell part (10).

6. The fluid control device according to claim 3 or 4 or 5, wherein the third housing part (30) further comprises a first support frame (37), a second support frame (38), both the first support frame (37) and the second support frame (38) protruding towards the first housing part (10) relative to the first wall part (311), the first support frame (37) being of unitary construction with the main body part (31), the second support frame (38) being of unitary construction with the main body part (31); the driving part comprises a motor (41) and a transmission assembly (42); the motor (41) is fixedly or in limiting connection with the first supporting frame (37), and the transmission assembly (42) is fixedly or in limiting connection with the second supporting frame (38).

7. The fluid control device according to claim 6, wherein the first support frame (37) includes a support member (371) and a reinforcement member (372), one end of the support member (371) is fixedly connected with the main body portion (31), the support member (371) includes a fitting portion (373), the fitting portion (373) is located at the other end of the support member (371), and the fitting portion (373) abuts against an outer wall portion of the motor (41); the side wall part of the reinforcement (372) is fixedly connected with the support (371), and the other side wall part of the reinforcement (372) is fixedly connected with the main body part (31).

8. The fluid control device according to claim 6, wherein the second supporting frame (38) includes a supporting portion (381), one end of the supporting portion (381) is fixedly connected to the main body portion (31), and the other end of the supporting portion (381) is rotatably connected to the transmission assembly (42); the support part (381) is a cylinder.

9. The fluid control device according to claim 3 or 4, characterized in that the fluid control device comprises a spindle (70) and a sealing ring (80), the spindle (70) being in a limited or fixed or driving connection with the valve core (61);

The third shell part (30) comprises a third protruding part (34), the main body part (31) and the first protruding part (32) are of an integrated structure, and the third protruding part (34) protrudes towards the second shell part (20) relative to the second wall part (312); the fluid control device comprises a third accommodating cavity (341), the sealing ring (80) is located in the third accommodating cavity (341), and the wall part forming the third accommodating cavity (341) comprises an inner wall part of the third protruding part (34), at least part of the outer wall part of the rotating shaft (70) and at least part of the top wall part of the valve core (61).

10. The fluid control device according to claim 1, characterized in that the second housing part (20) has a flow port (204), the flow port (204) comprising at least two flow ports, one flow port (204) being in communication with the valve core (61), wherein the other flow port (204) is in communication with the impeller (51); the fluid control device comprises a stator assembly (200), wherein the stator assembly (200) is fixedly injection-molded with the second shell part (20), or the second shell part (20) is provided with a fourth accommodating cavity (205), the stator assembly (200) is positioned in the fourth accommodating cavity (205), and the stator assembly (200) is fixedly connected or in limiting connection with the second shell part (20).