CN112128406B

CN112128406B - Fluid management assembly

Info

Publication number: CN112128406B
Application number: CN201910800036.0A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Current assignee: Zhejiang Sanhua Intelligent Controls Co Ltd
Priority date: 2019-06-24
Filing date: 2019-08-28
Publication date: 2022-06-07
Anticipated expiration: 2039-08-28
Also published as: CN112128406A

Abstract

The invention discloses a fluid management assembly, which comprises a valve body, a first cavity, a second cavity, a first flow channel, a second flow channel, a third flow channel and a fourth flow channel, wherein the first flow channel, the second flow channel and the third flow channel are provided with openings on the outer wall of the valve body, the valve body forms the second cavity, the second flow channel and a first channel, the first channel can be communicated with the first cavity and the second cavity, and the fluid management assembly is provided with a plurality of channels, the first cavity and the second cavity, so that the pipeline connection among corresponding functional components can be reduced, and the fluid flow resistance can be relatively reduced.

Description

Fluid management assembly

[ technical field ] A method for producing a semiconductor device

The present invention relates to the field of fluid management.

[ background of the invention ]

Functional components in the thermal management system are connected into a system through pipelines, the flow resistance of fluid is relatively increased due to the long pipelines, and the fluid is not favorably flowed in the system when the thermal management system works.

[ summary of the invention ]

It is an object of the present invention to provide a fluid management assembly to facilitate solving the above problems.

A fluid management assembly comprising a valve body and a first valve spool, the fluid management assembly further comprising a first chamber and a second chamber, a wall forming the second chamber comprising an inner wall of the valve body; the first spool is positioned in the first cavity, the first spool is capable of rotating in the first cavity, the first spool has a communication channel, the fluid management assembly includes a throttling cavity, and the throttling cavity or the communication channel is capable of communicating the first cavity with the second cavity;

the fluid management assembly comprises a first flow passage, a second flow passage, a third flow passage and a fourth flow passage, the first flow passage, the second flow passage and the third flow passage are provided with openings on the outer wall of the valve body, the first flow passage is communicated with the first cavity, and the fourth flow passage can be communicated with the first cavity through the conducting passage or the throttling cavity; the second flow passage is communicated with the second cavity, and the third flow passage forms a first opening of the third flow passage on the wall of the second cavity.

The fluid management assembly comprises a valve body, a first cavity, a second cavity, a first flow passage, a second flow passage, a third flow passage and a fourth flow passage, wherein the first flow passage, the second flow passage and the third flow passage are provided with openings on the outer wall of the valve body, and the first cavity can be communicated with the second cavity through a throttling cavity or a conducting channel; the fluid management assembly is provided with a plurality of channels and cavities, so that the pipeline connection between functional components can be relatively reduced, and the fluid flow resistance can be relatively reduced.

[ description of the drawings ]

FIG. 1 is a schematic perspective view of a first embodiment of a fluid management assembly;

FIG. 2 is a schematic top view of the structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the first embodiment of FIG. 2 taken along A-A;

FIG. 4 is a perspective view of the planetary assembly from a first perspective;

FIG. 5 is a perspective view of the planetary assembly from a second perspective;

FIG. 6 is a perspective view of a first valve seat;

FIG. 7 is a perspective view of a first embodiment of the first valve spool;

FIG. 8 is a schematic top view of the first valve spool;

FIG. 9 is a schematic cross-sectional view taken along B-B of FIG. 8;

FIG. 10 is a schematic elevation view of the structure of FIG. 1;

FIG. 11 is a schematic cross-sectional view of FIG. 10 taken along E-E;

FIG. 12 is a perspective view of the second valve body of FIG. 1;

FIG. 13A is a perspective view of the first valve body of FIG. 1 from a first perspective;

FIG. 13B is a perspective view of the first valve body of FIG. 1 from a second perspective;

FIG. 14 is a perspective view of a check valve member;

FIG. 15 is a cross-sectional schematic view of FIG. 14;

FIG. 16 is a schematic view of the first channel, the second chamber, and the conduit in positional relationship to the first cross-section;

FIG. 17 is a schematic cross-sectional view of the second embodiment of FIG. 2 taken along A-A;

FIG. 18 is a schematic cross-sectional view of the third embodiment of FIG. 2 taken along A-A;

FIG. 19 is a schematic perspective view of a second embodiment of a fluid management assembly;

FIG. 20 is a schematic top view of the structure of FIG. 19;

FIG. 21 is a schematic cross-sectional view of the first embodiment taken along C-C of FIG. 20;

FIG. 22 is a schematic cross-sectional view taken along F-F of FIG. 20;

FIG. 23 is a perspective view of the second valve body of FIG. 19;

FIG. 24 is a perspective view of the first valve body of FIG. 19;

FIG. 25 is a schematic top view of the structure of FIG. 23;

FIG. 26 is a schematic cross-sectional view taken along D-D of FIG. 25;

FIG. 27 is a schematic cross-sectional view of a third embodiment of a fluid management assembly;

FIG. 28 is a schematic cross-sectional view of a fourth embodiment of a fluid management assembly;

FIG. 29 is a schematic perspective view of a fifth embodiment of a fluid management assembly;

fig. 30 is a schematic cross-sectional view of fig. 29.

[ detailed description ] embodiments

The fluid management assembly according to the technical scheme of the invention can be applied to various modes, some of the fluid management assemblies can be applied to a vehicle thermal management system, and some of the fluid management assemblies can be applied to other thermal management systems such as a household thermal management system or a commercial thermal management system.

Referring to fig. 1-5, the fluid management assembly 10 includes a control portion, a transmission device 2000, a valve body 3000 and a first valve core 5000, in the technical solution of the present embodiment, the control portion is a driving mechanism 1000, the transmission device 2000 is located between the driving mechanism 1000 and the valve body 3000, the driving mechanism 1000 includes a motor portion 1100, a sleeve 1200 and a connecting seat 1300, one end of the connecting seat 1300 is fixedly connected with the sleeve 1200 and sealed at the connection, the motor portion 1100 includes a stator 1110, a motor shaft 1130 and a rotor 1120, the stator 1110 is sleeved outside the sleeve 1200, the rotor 1120 is fixedly connected with the motor shaft 1130, at least a portion of the rotor 1120 is located inside the sleeve 1200, the motor shaft 1130 passes through a through hole of the connecting seat 1300, and after being powered on, the rotor 1120 rotates under the action of an excitation magnetic field generated by the stator to drive the motor shaft 1130 to rotate. The transmission 2000 includes a gear case 2100, a planetary assembly 2200 and a valve rod 2300, wherein one end of the gear case 2100 has a step fixedly connected with the connection seat 1300, the step is formed with a step hole, the connection seat 1300 is screwed or welded with the step, and of course, a sealing member may be provided at the connection position when the connection seat 1300 is screwed with the step to improve the sealing performance. The other end of the gear case 2100 is fixedly connected to the valve body 3000, and the gear case 2100 and the valve body 3000 may be welded or screwed and have a seal at the joint. The planet assembly 2200 is located in a cavity formed by the gear box 2100 or the planet assembly 2200 is located in a cavity formed by the gear box 2100, the connecting base 1300 and/or the valve body 3000, the planet assembly 2200 comprises a sun gear 2210, a plurality of planet gears 2220, a gear shaft, a first ring gear 2230, a second ring gear 2240 and two mounting plates 2250, in this embodiment, the planet assembly 2200 comprises three planet gears 2220, the three planet gears 2220 are in meshing connection with the sun gear 2210, the first ring gear 2230 and the second ring gear 2240 each have internal teeth, a part of each planet gear 2220 is in meshing connection with the internal teeth of the first ring gear 2230, another part of each planet gear 2220 is in meshing connection with the internal teeth of the second ring gear 2240, and the outer side part of the first ring gear 2230 is fixedly connected to the gear box 2100, for example, the first ring gear 2230 and the gear box 2100 are relatively fixed in an interference fit or a limit fit. The planet gear 2220 and the sun gear 2210 are located between two mounting plates 2250, wherein the mounting plates 2250 near the drive mechanism 1000 are provided with through holes for the passage of the motor shaft in order to facilitate the mating of the motor shaft with the sun gear 2210.

Referring to fig. 3-5, the second ring gear 2240 has a position-limiting portion 2241, the position-limiting portion 2241 is disposed on a side of the second ring gear 2240 facing the valve body 3000, in this embodiment, the limiting part 2241 is formed as two arc-shaped grooves which are symmetrically distributed along the axis of the second ring 2240, and accordingly, referring to fig. 13, the valve body 3000 is provided with a limiting post 3010 which is matched with the limiting part 2241, similarly, the limiting post 3010 is also symmetrically distributed along the axis of the second ring 2240, the limiting post 3010 is located in the arc-shaped groove, two ends of the limiting part 2241 can limit the rotation range of the second ring 2240, it can be understood that the rotation range of the second ring gear 2240, and thus the rotation range of the valve lever 2300, can be restricted by providing an arc angle between both end portions of the stopper portion, in this embodiment, the arc angle of the stopper 2241 is 90 °, and the arc angle of the stopper 2241 can be set adaptively according to different application environments. One end of the valve rod 2300 extends into a central hole of the second gear 2240, the valve rod 2300 and the second gear 2240 can be fixedly connected in an interference fit mode or a welding mode, and the valve rod 2300 and the second gear 2240 can also be fixedly connected in an injection molding mode.

When the fluid management assembly 10 works, when the motor shaft 1130 rotates, the sun gear 2210 is driven by the motor shaft 1300 to rotate, due to the meshing effect, the planet gear 2220 is driven by the sun gear 2210 to rotate, the first gear ring 2230 is fixed, the planet gear 2220 rotates around the axis of the planet gear 2220, and simultaneously, the planet gear 2220 also rotates around the sun gear 2210 in the circumferential direction, so that the second gear ring 2240 is driven to rotate, meanwhile, the valve rod 2300 also rotates along with the rotation of the second gear ring 2240, and due to the mutual matching of the limiting part and the limiting column, the valve rod 2300 rotates within a certain range. The valve body 3000 includes a stem hole, a portion of the stem 2300 is located in the stem hole, the stem 2300 is in dynamic sealing with the stem hole, in addition, the fluid management assembly may also include a shaft sleeve embedded in the stem hole and fixed with the stem hole, the stem 2300 is sleeved in the shaft sleeve, and the stem 2300 is in dynamic sealing with the shaft sleeve. Referring to fig. 3, the fluid management assembly includes a first chamber 100 and a second chamber 200, the first chamber 100 and the second chamber 200 can communicate, a first spool 5000 of the fluid management assembly is disposed in the first chamber 100, and the first spool 5000 can rotate in the first chamber 100.

Referring to fig. 3 and 11, the fluid management assembly 10 includes a first flow channel 300, a second flow channel 400 and a third flow channel 500, wherein the first flow channel 300 has a first connection port 1 on an outer wall of the valve body 3000, the second flow channel 400 has a second connection port 2 on the outer wall of the valve body 3000, the third flow channel 500 has a third connection port 3 on the outer wall of the valve body 3000, the first flow channel 300 is communicated with the first chamber 100, the third flow channel 500 can be communicated with the second chamber 200, and the second flow channel 400 is communicated with the second chamber 200. The fluid management assembly further comprises a conduction pipe 700, the cavity formed by the conduction pipe 700 is communicated with the second channel 400, in this embodiment, the conduction pipe 700 is integrally arranged with the valve body 3000, the first port 701 of the conduction pipe 700 faces the bottom wall of the second cavity 200 and is communicated with the second cavity 200, and then the second channel 400 is communicated with the second cavity 200 through the conduction pipe 700. In the technical solution of this embodiment, the axial direction of the conduction tube 700 is taken as the vertical direction, the first port 701 of the conduction tube 700 faces downward, and accordingly, the wall of the second cavity, which the first port 701 of the conduction tube 700 faces, is the bottom wall of the second cavity 200.

Referring to fig. 1 and 3, the fluid management assembly further includes a valve cover 4000, the valve body 3000 includes a first opening portion 3110, the first opening portion 3110 is recessed from one side wall of the valve body toward the interior of the valve body 3000, the first opening portion 3110 has an opening in the side wall of the valve body, at least a portion of the valve cover 4000 is located in a cavity formed by the first opening portion 3110, the valve cover 4000 is hermetically fixed to the first opening portion 3110, and specifically, the fluid management assembly includes a connection device, the connection device includes a connection portion 4410 and a fitting portion 3111, the connection portion 4410 is formed on the valve cover 4000, the fitting portion 3111 is formed on the first opening portion 3110, in a specific embodiment, the fitting portion 3111 is formed with female threads at the first opening portion 3110, the connecting portion 4410 is formed with male thread sections at the outer wall of the valve cover 4000, and the female threads of the first opening portion 3110 and the male threads of the valve cover 4000 are fitted to each other to fix the valve cover 4000 to the first opening portion 3110. Referring to fig. 3 and 18, the valve cap 4000 includes a first communication channel 4300, the first communication channel 4300 forms a first opening 4301 of the first communication channel on an inner end wall 4020 of the valve cap, and the first communication channel forms a second opening 4302 of the first communication channel on a side wall of the valve cap 4000, in this embodiment, the valve cap 4000 includes a first sub-valve cap 4100 and a second sub-valve cap 4200, the first sub-valve cap 4100 is separated from the second sub-valve cap 4200, the first sub-valve cap 4100 is closer to the first valve core than the second sub-valve cap 4200, the first sub-valve cap 4100 includes a first hole 4110 and a second hole 4120, an opening of the first hole, that is, a first opening of the first communication channel, and the first opening 4301 is located on the inner end wall of the first sub-valve cap; the opening of the second hole 4120, i.e., the second opening of the first communication passage, the second opening 4302 is located on the side wall of the first sub-valve cap, the second sub-valve cap 4200 has external threads to be fitted and fixed with the internal threads of the first opening portion 3110, and the outer end wall of the first sub-valve cap 4100 abuts against the inner end wall of the second sub-valve cap 4200. The valve cap 4000 has two grooves for receiving sealing rings, wherein a first groove 4130 is formed on a sidewall of the first sub-valve cap 4100, and a second groove 4210 is formed on a sidewall of the second sub-valve cap 4200.

Referring to fig. 3 and 6-8, the fluid management assembly 10 further includes a valve seat, specifically, the valve seat includes a first valve seat 6100 and a second valve seat 6200, and the first valve seat 6100 may also be integrated with the valve cover 4000, where the integrated arrangement includes being fixed as one piece and being formed as one piece. Specifically, the first valve seat 6100 is sealingly fixed to the inner end wall of the valve cover 4000 or assembled and extruded as one body. First case 5000 is globular or spheroidal structure, and first case 5000 also can be cylindrical structure, and first case 5000 includes the cooperation groove 5300 with valve rod 2300 matched with, and valve rod 2300 can stretch into cooperation groove 5300, and valve rod 2300 can drive first case 5000 and rotate. Along the axial direction of the first opening portion 3110, the first valve core 5000 is disposed between the first valve seat 6100 and the second valve seat 6200, both the first valve seat 6100 and the second valve seat 6200 have mating surfaces matched with the first valve core 5000, when the first valve core 5000 is spherical or quasi-spherical, the mating surfaces of the valve seats are arc surfaces, and the mating surfaces of the valve seats may be convex to the first valve core or concave to the first valve core. The outer wall of the first valve core 5000 abuts against at least part of the mating surface 6120 of the first valve seat, the outer wall of the first valve core 5000 abuts against at least part of the mating surface of the second valve seat 6200, the first valve core 5000 can slide relative to the mating surface 6120 of the first valve seat, the first valve core 5000 is in dynamic seal with the mating surface 6120 of the first valve seat, the first valve core 5000 can slide relative to the mating surface of the second valve seat 6200, and the first valve core 5000 is in dynamic seal with the mating surface of the second valve seat 6200. It is noted that the wall forming the first chamber 100 includes the inner end wall of the valve cover 4000, the bottom wall of the first opening portion 3110 and a part of the side wall of the first opening portion 3110, or the wall forming the first chamber 100 includes the inner end wall of the valve cover 4000, the bottom wall of the first opening portion 3110, a part of the side wall of the first opening portion 3110, the first valve seat engagement surface 6120 and the engagement surface of the second valve seat 6200. Referring to fig. 3 and fig. 6, the first valve seat 6100 has a passage 6110 penetrating through the first valve seat, the passage 6110 of the first valve seat forms a first opening of the first valve seat passage on the mating surface 6120 of the first valve seat, it can be known that the mating surface 6120 of the first valve seat is an annular arc surface, the passage 6110 of the first valve seat has openings on the opposite sides of the mating surface and the mating surface, and the passage 6110 of the first valve seat is communicated with the first communication passage 4300. Similarly, the second valve seat 6200 has a channel passing through the second valve seat 6200, the channel of the second valve seat 6200 has openings on the mating surface of the second valve seat 6200 and on the opposite side of the mating surface, wherein the channel of the second valve seat 6200 forms a first opening of the channel of the second valve seat 6200 on the mating surface of the second valve seat 6200, and it can be known that the mating surface of the second valve seat 6200 is an annular surface, and the channel of the second valve seat 6200 can communicate with the second chamber 200.

The fluid management assembly includes a throttle chamber. Referring to fig. 7 to 9, the first valve core 5000 includes a throttling passage 5100 and a communication passage 5200, and the throttling passage 5100 and the communication passage 5200 are not communicated. In this embodiment, the throttling passage is formed as a throttling groove, the throttling passage 5100 is recessed from the outer wall of the first valve core 5000, the throttling passage 5100 has an opening on the outer wall of the first valve core 5000, for example, when the fluid management assembly throttles, the opening of the partial throttling passage 5100 faces the mating surface 6120 of the first valve seat, and the wall forming the throttling cavity comprises the mating surface of the first valve seat 6100 and the wall of the corresponding throttling groove. The wall forming the throttle chamber may also be an orifice, the orifice has two openings on the outer wall of the first spool 5000, the two openings of the orifice are the head end and the tail end of the throttle passage, when the fluid management assembly throttles, the two openings of the orifice are located on both sides of the annular surface, one opening of the orifice communicates with the first chamber 100, and the other opening of the orifice communicates with the passage of the first valve seat 6100 or the second valve seat 6200, and details thereof will not be described in detail.

Referring to fig. 7-9 and fig. 11, the fluid management assembly 10 has a conducting function, and the conducting function is achieved through a conducting channel 5200, the conducting channel 5200 is formed on the first valve core 5000, the conducting channel 5200 has two openings, the two openings of the conducting channel 5200 are formed on the outer wall of the first valve core 5000, and when the fluid management assembly is conducted, the two projections of the conducting channel are located on two sides of the mating surface along the radial direction of the projection of the mating surface. Specifically, the first valve core 5000 includes a third hole 5210 and a fourth hole 5220, a cavity formed by the third hole 5210 is communicated with a cavity formed by the fourth hole 5220, the through channel 5200 of the first valve core 5000 includes a cavity formed by the third hole 5210 and a cavity formed by the fourth hole 5220, in the embodiment, the axis of the fourth hole 5220 is parallel to the axis of the valve rod, the opening of the fourth hole 5220 on the outer wall of the first valve core faces away from the valve rod, and the axis of the third hole is perpendicular to the axis of the valve rod. In this embodiment, the first flow channel 300 has an opening at the first opening portion 3110, or the first flow channel 300 has an opening at the wall of the first cavity 100, the first flow channel 300 is communicated with the first cavity 100, the axis of the first flow channel 300 is perpendicular to the axis of the first opening portion 3110, correspondingly, the third hole 5110 is perpendicular to the axis of the fourth hole 5120, when the fluid management assembly works, the fluid of the first flow channel 300 enters the first cavity 100, then enters the fourth hole 5220, and then enters the third hole 5210, and when the opening of the first hole is communicated with the channel 6120 of the first valve seat, the conduction function of the fluid management assembly 10 is realized. The axis of the fourth aperture 5220 can also be perpendicular to the axis of the valve stem 2300, such that the opening of the fourth aperture 5120 can be disposed opposite the opening of the first flow passage 300 and the opening of the third aperture can be disposed opposite the passage 6120 of the first valve seat, such that the flow resistance of the fluid of the first flow passage 300 into the communication passage 5200 can be reduced. It will be appreciated that the angle between the axis of the third aperture 5210 and the axis of the fourth aperture may be between 45 deg. -135 deg.. Of course, when the fluid management assembly is conducted, one opening of the conducting channel is arranged opposite to the valve seat channel, and the other opening of the conducting channel faces the first cavity, so that the first cavity can be communicated with the valve seat channel.

Referring to fig. 3 and 11, the valve body further includes a first passage 3120, and the first chamber 100 can communicate with the second chamber 200 through the first passage 3120. Specifically, the first passage 3120 has two openings, that is, a first opening and a second opening, the first passage 3120 forms the first opening 3121 of the first passage 3120 at the wall of the second chamber 200, and then the first passage 3120 communicates with the second chamber 200, the first passage 3120 forms the second opening 3122 of the first passage 3120 at the bottom wall of the first opening portion 3110, and then the second opening 3122 of the first passage 3120 communicates with the passage of the second valve seat 6200, and in the present embodiment, the axis of the first passage 3120 is parallel to the axis of the first opening portion 3110, and the parallel includes the case where the parallel refers to the included angle within ± 10 °. In other embodiments, the first passage 3120 may also be only the first opening of the first passage.

In order to improve the gas-liquid separation effect of the second chamber, the fluid management assembly further comprises a conducting pipe 700, the conducting pipe 700 and the valve body can be formed by processing the same profile, in this case, the conducting pipe 700 is provided with a first port 701, the first port 701 of the conducting pipe 700 is positioned in the second chamber 200, and the first port 701 faces the bottom wall of the second chamber 200. In the present embodiment, referring to fig. 18, the sidewall of the second chamber 200 includes a first sub-portion 230 and a second sub-portion 240, and the first sub-portion 230 is located between the first bottom wall 221 and the second bottom wall 222 along the axial direction of the conducting tube 700; the second sub-portion 240 is located between the top wall of the second chamber 200 and the first port 701 of the conducting tube 700, and the first opening 3121 of the first passage is located at the second sub-portion 240, so that the fluid entering the second chamber 200 through the first opening 3121 of the first passage can be prevented from directly entering the second flow channel 400, but after the gas-liquid separation process, the gas enters the second flow channel 400 through the conducting tube cavity, and the liquid is deposited and collected with the bottom wall of the second chamber 200. In this embodiment, the first opening 3121 of the first passage is located on the side wall of the second cavity 200, and the farther the first opening 3121 of the first passage is away from the first port 701 of the conduit 700, the less fluid is sucked away by the conduit 700, although the first opening 3120 of the first passage may be formed on the top wall of the second cavity 200, or on both the top wall and the second sub-portion of the second cavity 200.

Referring to fig. 16, a first cross section is defined, the first cross section is perpendicular to the axis of the conduit 700, the axis of the first passage 3120 is located in the first cross section, the intersection of the wall forming the first passage 3120 and the first cross section includes a first side line 3123 and a second side line 3124, the intersection of the side wall of the second chamber 200 and the first cross section is defined as a first circular line 200 ', the intersection of the outer wall of the conduit 700 and the first cross section is defined as a second circular line 700 ', the second side line 3124 is closer to the second circular line 700 ' than the first side line 3123, the extension lines of the first side line 3123 and the second side line 3124 are located between the extension lines of the second side line 700 ' in the radial direction of the first circular line 200 ', or, the extension lines of the second side line 700 ' are not located between the extension lines of the first side line 3123 and the extension lines of the second side line 3124 in the radial direction of the same side of the first circular line 200 ', and the case where the extension lines of the second side line 3124 are tangent to the first circular line, the extension line of the first side line 3123 is tangent to the first loop line 200'. The first passage 3120 is formed such that the refrigerant discharged from the first passage 3120 flows in the second chamber 200 in a substantially spiral shape, a gas-liquid separation path is extended to facilitate gas-liquid separation, the first passage does not face the conduction pipe, the refrigerant discharged from the first passage 3120 does not directly impact the conduction pipe 700, gas-liquid discharge from the conduction pipe 700 is facilitated, and liquid fluid is not easily attached to the outer wall of the conduction pipe 700.

Referring to fig. 3, 13 and 12, the bottom wall of the second chamber 200 includes a first bottom wall 221 and a second bottom wall 222, and along the axial direction of the conduction pipe 700, the distance from the second bottom wall 222 to the first port 701 of the conduction pipe 700 is greater than the distance from the first bottom wall 221 to the first port 701 of the conduction pipe 700, so that after the gas-liquid separation of the fluid, the liquid fluid is collected at the second bottom wall 222, which is convenient for the liquid fluid to be collected at the second bottom wall, and the second bottom wall is provided with a discharge port, which is beneficial for the liquid fluid to be discharged; the first bottom wall is higher than the second bottom wall, the first bottom wall has no or only a small amount of liquid fluid, the first port 701 of the conduction pipe 700 faces the first bottom wall 221, and the projection of the first port 701 of the conduction pipe 700 along the axial direction of the conduction pipe is located on the first bottom wall, so that the liquid fluid located on the bottom wall of the second chamber 200 is prevented from being sucked away by the conduction pipe 700. Of course, the first bottom wall 221 and the second bottom wall 222 may be formed integrally or separately. In the present embodiment, the second bottom wall 222 is an annular wall. The third flow channel 500 is provided with an opening on the outer wall of the valve body, the third flow channel 500 forms a first opening 501 of the third flow channel 500 on the wall of the second chamber 200, the first opening 501 is positioned on the second bottom wall, namely, the second bottom wall is provided with a discharge port, and the third flow channel 500 is communicated with the second chamber 200; the third flow passage 500 has the second opening 3 of the third flow passage 500, i.e., the third connection port 3, in the outer wall of the valve body.

Referring to fig. 18, the valve body includes a second opening portion 3210, the third flow passage 500 includes a chamber having the second opening portion, and the third flow passage 500 further includes a communicating portion 520 and a throttle portion 510, and accordingly, the second opening portion has a wall 3212 forming the communicating portion and a wall 3211 forming the throttle portion. The first opening 501 of the third flow channel is located on the second bottom wall 222 and/or the first sub-portion 230 along the axial direction of the conduction pipe 700. In one embodiment of the present invention, the communication portion 520 forms the second opening of the third flow passage 500 in the outer wall of the valve body, and the throttle portion 510 forms the first opening 501 of the third flow passage in the side wall of the second chamber 200, but the first opening of the third flow passage 500 may be formed in the bottom wall of the second chamber 200 and/or formed in the first sub-portion 230. When the first opening of the third flow channel 500 is formed in the first sub-portion 230, the first opening of the third flow channel 500 is as close to the second bottom wall 222 as possible, so as to facilitate the liquid fluid flowing into the third flow channel 500. In another embodiment of the present invention, the third flow channel 500 may not be provided with a throttling portion, and the third flow channel 500 may include only the communicating portion 520, and in this case, the third flow channel 500 only has a conducting function.

Referring to fig. 1, 3 and 11, and fig. 12 to 13, the valve body 3000 includes a first valve body 3100 and a second valve body 3200, wherein the transmission device 2000 is fixedly disposed on the first valve body 3100, the first opening portion 3110, the first passage 3120, the first flow passage 300 and the second flow passage 400 are formed on the first valve body 3100, and at least a portion of the third flow passage 500 is formed on the second valve body 3200. Referring to fig. 12 and 13, the first valve body 3100 includes a first wall 3101, the second valve body 3200 includes a second wall 3201, the first wall 3101 and the second wall 3201 are disposed in contact or in a gap arrangement, where the gap arrangement is that the distance between the first wall 3101 and the second wall 3201 is less than or equal to 5 cm, and other components are disposed between the first wall 3101 and the second wall 3201, which also belongs to the gap arrangement. The second chamber 200 comprises a first sub-chamber 210 and a second sub-chamber 220, the first sub-chamber 210 is formed in the first valve body 3100, the second sub-chamber 220 is formed in the second valve body 3200, the first sub-chamber 210 is arranged opposite to the second sub-chamber 220, the fluid management assembly comprises a first gap 3150 and a first seal, the second chamber 200 is located inside the first gap 3150, in this embodiment, first gap 3150 is shaped as a groove, first gap 3150 is located on and recessed from first wall 3101, first gap 3150 surrounds first subchamber 210 at the periphery of the opening of first wall 3101, or the opening of the first subchamber 210 at the first wall 3101 is located inside the first gap 3150, a first seal is provided within the first gap 3150, and after the first valve body 3100 and the second valve body 3200 are assembled, the first seal abuts the walls of the first gap 3150 and the second wall 3201, respectively, to effect a seal of the second chamber 200, preventing fluid leakage from the second chamber 200. Of course, first gap 3150 may be formed in second wall 3201 or first gap 3150 may be formed simultaneously with first wall 3101 and will not be described in detail. In other embodiments, referring to fig. 23, 24 and 26, first valve body 3100 comprises an insert 3190, an opening of first subchamber 210 is formed in insert 3190, insert 3190 is convex with respect to first wall 3101, and correspondingly, second valve body 3200 comprises a step 3290, step 3290 comprises a step sidewall 3291 and a step bottom wall 3292, step sidewall 3291 extends from second wall 3201 towards step bottom wall 3292, step bottom wall 3292 is parallel to second wall 3201, step bottom wall 3292 is located between second wall 3201 and the bottom wall of the second chamber along the axial direction of conduit 700, an opening of second subchamber 220 is located at insert 3190, insert 3190 is located at the step, insert 3190 and the step have a first gap 3150 therebetween, the fluid management assembly is provided with a first seal at the first gap, so as to realize the sealing of the embedded part 3190 and the stepped part, and further realize the sealing of the second chamber 200, preventing the fluid of the second chamber 200 from leaking. Of course, the insertion portion 3190 may be provided in the second valve body 3200, and a step portion may be provided corresponding to the first valve body 3100, which will not be described in detail.

The first valve body 3100 includes a first through hole 3130, the first through hole 3130 forming a first opening of the first through hole 3130 at a wall of the first opening portion 3110, the first through hole 3130 forming a second opening of the first through hole 3130 at the first wall 3101, wherein the first opening of the first through hole 3130 is disposed opposite to the opening of the second hole 4120, or the first opening of the first through hole 3130 is disposed opposite to the second opening of the first communication passage, the first through hole 3130 communicating with the first communication passage 4300; the second valve body 3200 includes a second through hole 3220, the second through hole 3220 has a first opening of the second through hole 3220 in the second wall 3201, the second through hole 3220 has a second opening of the second through hole 3220 in the second opening portion 3210, the second through hole 3220 communicates with a cavity formed by the second opening portion 3210, a first opening of the first through hole 3130 is disposed opposite to a first opening of the second through hole 3220, and the first through hole 3130 communicates with the second through hole 3220.

The fluid management assembly 10 also includes a fourth flow passage that is capable of communicating with the first chamber 100. In this embodiment, the fourth flow passage includes a passage 6110 of the first valve seat, a first communication passage 4300, a first through hole 3130, and a second through hole 3220, and an opening of the fourth flow passage is located on a wall of the communication portion 3212, or fluid in the fourth flow passage enters the third flow passage 500 and is then discharged through the third flow passage 500. The fluid management assembly also includes a second gap 3140 and a second seal located in the second gap 3140 to effect a seal. In this embodiment, the second gap 3140 is shaped as a groove, the second gap 3140 is located on the first wall 3101 and is recessed from an end of the first wall, the second gap 3140 surrounds an outer circumference of the second opening of the first through hole 3130, or the second opening of the first through hole 3130 is located inside the second gap 3140, a second sealing member is disposed in the second gap 3140, the second sealing member abuts against a wall of the second gap 3140 and the second wall 3201, respectively, and the second sealing member may be a sealing ring or a solder to prevent inner leakage. Of course, the second gap 3140 may be formed on the second wall 3201, or both the first wall 3101 and the second wall 3201 may be provided with the second gap 3140, and the second gap 3140 of the first valve body 3100 and the second gap 3140 of the second valve body 3200 may be arranged oppositely or in a staggered manner, which will not be described in detail.

In other embodiments, referring to fig. 23 and 24, the fluid management assembly further includes a first nipple 3170, the first nipple 3170 being integrally provided with one of the first valve body 3100 or the second valve body 3200 such that an end portion of the first nipple 3170 is positioned at the first through hole 3130 or the second through hole 3220 and forms a second gap 3140 therewith, the second gap 3140 being provided with a second sealing member, which facilitates assembly and reduces a risk of leakage, in the present embodiment, the first nipple is integrally provided with the first valve body. In other embodiments, the first connection pipe is provided separately from the first and second valve bodies, one end of the first connection pipe 3170 is located in the first through hole, the other end of the first connection pipe 3170 is located in the second through hole, a second gap is provided between the first connection pipe 3170 and the first through hole, a second gap is provided between the first connection pipe 3170 and the second through hole, and the fluid management assembly is provided with a second sealing member at the second gap 3140 to seal the first connection pipe 3170 from the first and second through holes.

In order to fix the first valve body 3100 and the second valve body 3200, in this embodiment, one of the first valve body 3100 and the second valve body 3200 is provided with a first mounting hole, and the other of the first valve body 3100 and the second valve body 3200 is provided with a first through hole to be matched with the first mounting hole, generally, an axis of the first mounting hole is parallel to an axis of the conduction pipe 700, the fluid management assembly further comprises a first fastening member, the first fastening member extends into the first through hole and the first mounting hole, and the first fastening member fastens the first valve body 3100 and the second valve body 3200. Under the action of the first fastener, the first wall and the second wall are closely arranged or closely arranged through other components and are fixed through the fastener, and the fastener comprises a component which can be fastened through a bolt and the like.

Referring to fig. 17, the first communication channel 4300 includes a cavity of the first hole 4110 and a cavity of the second hole 4120, an axis of the first hole 4110 coincides with an axis of the second hole 4120, although the axis of the first hole 4110 and the axis of the second hole 4120 may also be arranged in parallel, the cavity formed by the first hole 4110 communicates with the cavity formed by the second hole 4120, an opening of the second hole 4120 is formed in the outer end wall 4010 of the bonnet, that is, an opening of the fourth channel in the outer end wall of the bonnet or the fourth connection port 4, so that the first valve body 3100 does not need to be provided with the first through hole 3130, the second valve body 3200 does not need to be provided with the second through hole 3220, which is beneficial for installation and internal leakage reduction, and the fourth channel 600 includes a channel of the first valve seat 6100 and the first communication channel 4300; the fourth flow channel does not need to share an outlet with the third flow channel, and when the fluid management assembly is applied and throttled and conducted simultaneously, the fluid in the third flow channel and the fluid in the fourth flow channel are not mixed; thus, even if the second valve body is not provided in the second opening portion, the fluid in the fourth flow passage does not enter the second chamber. In this embodiment, the fluid management assembly 10 includes a first groove and a sealing member, the sealing member is located in the first groove, the first groove is recessed relative to the side wall of the valve cover and circumferentially distributed along the side wall of the valve cover, of course, the first groove may be disposed in the valve body, and the first groove is recessed relative to the first opening and circumferentially distributed along the first opening. The connecting portion is formed with the external screw thread in the outer wall of valve gap, and the cooperation portion is formed with the internal thread in first opening portion, and the two mutually support in order to realize the fixed of valve gap and valve body. Of course, the fluid management assembly further includes a snap ring, the connecting portion is formed as a groove in an outer wall of the bonnet, the mating portion is formed as a groove in a sidewall of the first opening portion, and the snap ring abuts the groove of the bonnet and the groove of the first opening portion.

In this embodiment, referring to fig. 3, 14 and 15, the fluid management assembly 10 further includes a check valve member 7000, the check valve member 7000 is disposed in the cavity formed by the second opening portion 3210, specifically, the second opening portion 3210 is formed with a mounting portion 3213, the mounting portion 3213 is located between the communicating portion 520 and the throttling portion 510, the check valve member 7000 includes a valve supporting seat 7100 and a second valve spool 7200, at least a portion of the valve supporting seat 7100 is located in the cavity formed by the mounting portion 3213, and the mounting portion 3213 is fixedly connected to the valve supporting seat 7100 and is disposed in a sealing manner at the connection portion. The valve support 7100 comprises a valve core rod hole, a communication hole 7110 and a stopper 7130, a valve port portion 7120 is formed on the valve support 7100, the valve port portion 7120 is located on the side, close to the communication portion 520, of the valve support 7100, and the stopper 7130 is located on the side, close to the throttling portion 510, of the valve support 7100. Both the spool rod hole and the communication hole 7110 penetrate the valve support base 7100 in the axial direction of the second opening portion 3210. The second spool 7200 includes a spool rod 7230, a first end portion 7210, and a second end portion 7220, the first and

second end portions

7210, 7220 are integrally formed with the spool rod 7230 or are integrally formed after welding, the first and

second end portions

7210, 7220 are protruded with respect to the spool rod 7230 in a radial direction of the second opening portion 3210, or the outer diameters of the first end 7210 and the second end 7220 are greater than the outer diameter of the valve core rod 7230, the valve core rod 7230 is located in the valve core rod hole, the valve core rod 7230 can slide in the valve core rod hole, the first end 7210 and the second end 7220 are located on both sides of the valve supporting seat 7100, the first end 7210 is relatively adjacent to the communicating portion 520, the second end 7220 is relatively adjacent to the throttling portion 510, one end of the elastic element 7300 abuts against the second end 7220, the other end of the elastic element 7300 abuts against the stopping portion 7130, the elastic element 7300 is arranged on the one-way valve member 7000 to facilitate the resetting of the second valve core 7200, and in this embodiment, the elastic element 7300 is a spring. The first end portion 7210 has a first contact area 7211, the communication hole 7110 has a communication opening in the outer end wall of the valve support base 7100, the valve opening portions 7120 are distributed along the circumferential direction of the communication opening, and in other embodiments, the valve opening portions 7120 may be formed as the wall of the communication portion. When the fluid management assembly is in operation and the pressure of the throttling part 510 is lower than the pressure of the communication part 520, the second valve spool 7200 is in the first position, the first abutting region 7211 abuts against the valve port 7120, the communication hole 7110 is not communicated with the communication part 520, and the third flow channel 500 is closed; when the pressure of the throttle portion 510 is greater than the pressure of the communication portion 520, the second spool 7200 is located at the second position, the first abutting region 7211 is separated from the valve opening portion 7120, the second end portion compresses the elastic element 7300, the stopper portion restricts the second spool from further moving toward the communication portion, the second spool 7200 opens the valve opening portion 7120, the communication hole communicates with the communication portion 520, and the third flow channel 500 is communicated.

Referring to fig. 27 and 28, the second valve body 3200 includes a third opening portion 3240, and the third opening portion 3240 is recessed with respect to a wall of the second valve body 3200. In the present embodiment, the third opening portion 3240 is recessed from one wall of the second valve body toward the second wall 3201, the third opening portion 3240 includes a large diameter portion 3241, a small diameter portion 3242, and a land portion 3243, the land portion 3243 connects the large diameter portion 3241 and the small diameter portion 3242, and the small diameter portion 3242 has an opening in a wall of the communication portion 520. In the present embodiment, the third flow channel 500 includes a second channel 3250, the second channel 3250 forms a first opening 501 of the third flow channel 500 on a wall of the second chamber 200, the second channel 3250 has an opening on the third opening, the second channel 3250 communicates with a chamber formed by the second chamber 200 and the third opening 3240, and an axis of the second channel 3250 is inclined with respect to an axis of the introduction pipe. Referring to fig. 24, at least a portion of the second channel 3250 is shaped as a restriction having an equivalent diameter of about 1.4 mm, although other dimensions are possible and sufficient to allow for fluid restriction. The fluid management assembly further includes a solenoid valve portion including a valve support 7100 ', a sleeve portion 8600, the valve support 7100 ' having a central aperture therethrough, one end of the valve support 7100 ' being fixedly attached to and sealed at the junction of the third opening 3240, which may be welded or threaded. The solenoid portion further includes a second valve spool 7200 'and an elastic member 7300', in this embodiment, the second valve spool 7200 'is a piston having a piston hole, the piston is slidable in the valve chamber, and in this embodiment, the wall forming the valve chamber includes a partial wall of the large diameter portion 3241 and a wall of the valve support base 7100'. The valve support 7100 'includes a guide wall, at least a portion of the piston is disposed in a cavity defined by the guide wall, the guide wall of the valve support 7100' is slidably coupled to a sidewall of the piston, and another portion of the piston is disposed in a cavity defined by the enlarged diameter portion 3241. One end of the elastic member 7300 'abuts against the table portion 3243, and the other end of the elastic member 7300' abuts against the piston. The fluid management assembly 10 further includes a coil assembly 8500 and a core assembly including a movable core 9200, a stationary core 9300 and a sleeve portion 8600, one end of the sleeve portion being disposed in the central bore of the valve support 7100 ' and sealingly engaged with a wall of the central bore of the valve support 7100 ', at least a portion of the stationary core 9300 being disposed in the sleeve portion and secured to the sleeve portion, at least a portion of the movable core 9200 being disposed in the sleeve portion and being movable relative to the stationary core 9300, the movable core 9200 being capable of sealing the piston bore relative to the stationary core 9200, wherein the stationary core 9300 is further from the valve support 7100 ' than the movable core 9200, and the coil assembly 8500 is disposed around the sleeve portion 8600. When the fluid management assembly is in operation, after the coil assembly 8500 is energized, the magnetic field generated by the coil assembly 8500 drives the movable iron core 9200 to move, the movable iron core 9200 abuts against the piston to seal the piston hole, the piston moves toward the valve port, the piston seals the valve port, and the communicating portion 520 is not communicated with the second chamber 200, in this embodiment, the valve port is a wall of the small-diameter portion 3242 or the platform portion 3243. When fluid flows out from the second cavity through the third flow channel, the second channel has a throttling effect, the electromagnetic valve portion opens the third flow channel, and the electromagnetic valve is closed when the pressure of the communication portion is larger than that of the throttling portion at other times.

Referring to fig. 28, in contrast to the arrangement shown in fig. 27, the difference is that the second channel 3250 is shaped as a channel 520 or a portion of a channel 520, the equivalent diameter of which is 3 mm, although other dimensions are possible. In the present embodiment, the second valve element 7200 ″ is a valve needle, but the second valve element 7200 ″ may be another valve. The fluid management assembly 10 further includes a transmission mechanism 8300, a rotor portion 8400, and a valve element guide portion, wherein in this embodiment, the transmission mechanism 8300 is a screw transmission mechanism, the screw transmission mechanism includes a movable portion and a fixed portion, one of the movable portion and the fixed portion includes a screw, the other includes a nut in threaded engagement with the screw, the movable portion is assembled with the valve needle, and the fixed portion can be directly or indirectly fixed to the valve seat; the spool guide portion is fixed to the valve support base 7100 ″ and can guide the second valve spool 7200 ″ and prevent the second valve spool 7200 ″ from deviating in its axial movement. The valve port portion of the fluid management assembly 10 is formed in the valve support base 7100 ', and in other embodiments, may be formed in the valve core guide portion, or, of course, may be formed in the small diameter portion 3242, with the second valve core 7200' being substantially coaxial with the valve port portion. When the fluid management assembly 10 is in operation, the coil assembly 8500 is electrically connected to a control circuit for controlling the coil assembly 8500, an excitation magnetic field generated by the coil assembly 8500 when energized can drive the rotor portion 8400 to rotate, the needle is further driven to move by the screw drive mechanism 8300, and when the rotor portion 8400 rotates, the screw is driven by the rotor portion 8400 to rotate relative to the nut to perform rotational and axial movements due to the pitch of the screw, and the needle is fixed relative to the screw, so that the needle can move axially with the screw, and the gap between the needle and the valve port is increased or decreased, thereby throttling of the refrigerant is achieved, and it is known that the gap between the second valve core 7200' and the valve port forms a throttling portion. Of course, the transmission mechanism 8300 may also be a gear transmission mechanism 8300, the second valve core may also be a ball or a sphere-like structure, and the movement of the second valve core relative to the valve seat or the connecting body may be relative rotation.

Referring to fig. 29 and 30, compared to the embodiment shown in fig. 17, the valve body 3000 includes a body 3300 and a block 3400, the body 3300 includes a first opening 3110, a second opening 3210, a first flow channel 300, a first passage 3120, the first flow channel 300 forms a first connection port 1 on an outer wall of the body 3300, the body 3300 includes a fourth opening 3310, the fourth opening 3310 is recessed from an upper wall of the body 3300 toward an inside of the body, the fourth opening 3310 has an opening on the upper wall of the body 3300, the fourth opening 3310 includes a mounting wall 3311 and a sidewall 3312 of the second chamber, wherein the mounting wall 3311 is relatively close to the opening of the fourth opening, and the first opening 3311 of the first passage 3120 is formed on the sidewall 3312 of the second chamber. The second flow passage 400 penetrates the block 3400, the block 3400 has a fitting wall, the fitting wall of the block 3400 is fixed with the mounting wall 3312 in a sealing manner, specifically, the fitting wall of the block 3400 has an external thread, the mounting wall is formed into an internal thread, and the external thread of the block 3400 is mutually matched with the internal thread of the mounting wall to realize the fixation of the block 3400 and the body 3300. There is a gap between the block 3400 and the mounting wall, which gap is provided with a seal to effect a seal of the block 3400 with the mounting wall. The conduction pipe 700 is provided integrally with the block 3400, but the block 3400 may be provided separately from the conduction pipe 700. In the present embodiment, the valve cover 4000 includes the first communication passage 4300, the first communication passage 4300 having an opening on the inner end wall of the valve cover 4000, and the first communication passage 4300 having the fourth connection port 4 on the outer end wall 4010 of the valve cover. In another embodiment, the fourth opening is recessed from the lower wall of the body 3300 towards the interior of the body, the fourth opening 3310 has an opening in the lower wall of the body 3300, the inner wall of the block 3400 is shaped as the bottom wall of the second cavity, the bottom wall of the fourth opening is shaped as the top wall of the second cavity, and the second flow passage is shaped in the body. The valve body comprises a main body 3300 and a block 3400, and compared with the scheme shown in figure 3, the valve body is relatively simple to process and assemble.

Referring to fig. 19-26, the difference from the scheme shown in fig. 3 is that: the first connection port 1 is formed in the second valve body 3200, and the opening of the first flow passage 300 in the wall of the first chamber 100 is located at the lower side of the first valve core 5000, that is, the opposite side of the valve rod 2300, so that the lateral impact of the fluid on the first valve core 5000 can be reduced, which is beneficial to maintaining the stability of the first valve core 5000. Specifically, the first flow passage 300 includes a first sub-flow passage 310 and a second sub-flow passage 320, wherein the first sub-flow passage 310 is located in the first valve body 3100, the second sub-flow passage 320 is located in the second valve body 3200, the first sub-flow passage 310 has openings in a first wall 3101 and a first opening portion 3110, wherein the first sub-flow passage 310 forms a first opening of the first sub-flow passage 310 in the first wall 3101, the first sub-flow passage 310 forms a second opening of the first sub-flow passage 310 in a wall of the first cavity 100, the second opening of the first sub-flow passage 310 and the valve rod 2300 are located on two sides of the first valve core 5000, the first sub-flow passage is communicated with the first cavity 100, and when the fluid of the first flow passage enters the first cavity, a lateral impact on the first valve core is reduced, which is beneficial to the stability of the first valve core, and the lateral direction is perpendicular to the axial direction of the valve rod; the second sub flow path 320 forms a first opening of the second sub flow path 320 at the second wall 3201, and the second sub flow path 320 also has an opening at an outer wall of the second valve body 3200. In this embodiment, the first valve body 3100 includes a first hole portion 3160, a cavity of the first hole portion 3160 forms a part of the first sub flow path 310, the second valve body 3200 includes a second hole portion 3230, a wall forming the second sub flow path 320 includes a second hole portion 3230 and a third hole portion 3270, the second hole portion 3230 is recessed from the second wall 3201 toward the inside of the second valve body 3200, or the cavity formed by the second hole portion 3230 forms a first opening of the second sub flow path 320 at the second wall 3201; the third hole portion 3270 has an opening in one side wall of the second valve body, and a cavity formed by the second hole portion 3230 communicates with a cavity formed by the third hole portion 3270, but in the present embodiment, the axis of the second hole portion 3230 is perpendicular to the axis of the third hole portion 3270, and the axis of the second hole portion 3230 and the axis of the third hole portion 3270 may have other angles. The fluid management assembly further includes a third gap 3260 and a third sealing member, the third sealing member is located in the third gap 3260, the fluid management assembly includes a second connection pipe 3180, the second connection pipe 3180 is integrally formed with the first valve body 3100, one end of the second connection pipe 3180 is located in a cavity formed by the second hole portion 3230, the second hole portion 3230 and the second connection pipe form the third gap 3260, the second connection pipe 3180 and the first valve body are integrally formed, so that the assembly is convenient, and the leakage risk is reduced, although the second connection pipe 3180 may also be integrally formed with the second valve body, and will not be described in detail. In other embodiments, one end of the second adapter 3180 is located in the first hole portion 3160, the other end of the second adapter is located in the second hole portion 3230, a third gap is provided between the second adapter 3180 and the first hole portion 3160, a third gap 3260 is provided between the second adapter 3180 and the second hole portion 3230, and the fluid management assembly 10 is provided with a third seal at the third gap 3260 to seal the second adapter 3180 to the first hole portion 3160 and the second hole portion 3230. It is understood that the fluid management assembly 10 may not include the second adapter, the third gap 3260 is formed as a groove, the third gap 3260 is recessed with respect to the first wall, the third gap 3260 surrounds the outer periphery of the first opening of the first hole portion 3160, or the first opening of the first hole portion 3160 is located inside the third gap 3260, a third sealing member is disposed in the third gap 3260 and abuts against the wall of the third gap 3260 and the second wall 3201, respectively, and the third sealing member may be a sealing ring or a solder to prevent internal leakage. Of course, the third gap 3260 may be formed on the second wall 3201, or both the first wall 3101 and the second wall 3201 may be provided with the third gap 3260, and the third gap 3260 of the first valve body 3100 and the third gap 3260 of the second valve body 3200 may be arranged oppositely or alternatively, and will not be described in detail. The second valve body further comprises a fourth hole portion 3280, the fourth hole portion forms a third connection port 3 on the outer wall of the second valve body, the axis of the fourth hole portion 3280 is perpendicular to the axis of the second opening portion 3210, a cavity formed by the fourth hole portion 3280 is communicated with a cavity formed by the second opening portion 3210, and accordingly, a plug is further disposed on the fourth opening portion of the fluid management assembly to prevent the fluid from flowing out through the opening of the second opening portion. In this embodiment, the third connection port 3 is on the same outer wall of the second valve body as the first connection port 1, which facilitates communication of the fluid management assembly with other components; the third flow channel includes a cavity formed by the second opening portion 3210 and a cavity formed by the fourth hole portion 3280. The cavity formed by the fourth bore portion 3280 communicates with the cavity formed by the second through hole 3220, and thus, the fourth flow channel communicates with the third flow channel.

It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, such as directional definitions of "front", "back", "left", "right", "up", "down", etc., and the present invention has been described in detail by referring to the above embodiments, but those skilled in the art should understand that those skilled in the art can still make combination, modification or equivalent substitution on the present invention, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims

1. A fluid management assembly comprising a valve body and a first valve spool, the fluid management assembly further comprising a first chamber and a second chamber, a wall forming the second chamber comprising an inner wall of the valve body; the first spool is positioned in the first cavity, the first spool is capable of rotating in the first cavity, the first spool has a communication channel, the fluid management assembly includes a throttling cavity, and the throttling cavity or the communication channel is capable of communicating the first cavity with the second cavity;

2. The fluid management assembly of claim 1 wherein the valve body comprises a first open portion, the wall of the first chamber comprising a partial wall of the first open portion; the valve body includes a first passage that forms a first opening of the first passage at a wall of the second chamber, the first opening of the first passage being located above the first opening of the third flow passage, the first passage forming a second opening of the first passage at a bottom wall of the first opening portion.

3. The fluid management assembly of claim 2 wherein the valve body includes a second opening portion having an opening in an outer wall of the valve body, the third flow passage includes a cavity formed by the second opening portion, the cavity formed by the second opening portion includes a communication portion that is capable of communicating with the first opening of the third flow passage.

4. The fluid management assembly of claim 3 wherein the second opening forms a first opening of the third flow passage in a wall of the second chamber; the third flow channel comprises a throttling part, the second opening part comprises a mounting part, the second opening part comprises a wall of the throttling part, the mounting part is positioned between the throttling part and the communication part, the corresponding fluid management assembly comprises a valve supporting seat, and the valve supporting seat and the mounting part are relatively fixed;

the throttle portion is located between the first opening of the third flow passage and the communicating portion, or the throttle portion forms the first opening of the third flow passage at the wall of the second chamber.

5. The fluid management assembly of claim 3 wherein the valve body further comprises a third opening and a second channel, the third opening comprising a large diameter portion, a small diameter portion and a land portion, the land portion connecting the large diameter portion and the small diameter portion, the small diameter portion having an opening at a wall of the communication portion, the large diameter portion having an opening at an outer wall of the valve body;

the large diameter portion comprises a mounting portion, the fluid management assembly further comprises a valve cavity and a valve support seat, the valve support seat is relatively fixed with the mounting portion, and the wall forming the valve cavity comprises the wall of the large diameter portion and the wall of the valve support seat;

the second passage forms a first opening of the third flow passage in a wall of the second chamber, and the second passage has an opening in a wall of the valve chamber.

6. The fluid management assembly of any of claims 4 or 5 wherein the valve body comprises a body and a block, the body comprising the first open portion, a second open portion and the first flow passage, the first flow passage having an opening formed in an outer wall of the body;

the main body comprises a fourth opening, at least part of the block is located in a cavity formed by the fourth opening, the fourth opening is provided with a mounting wall, the block is provided with a matching wall, the mounting wall is fixedly connected with the matching wall and is arranged at the connection position in a sealing mode, and the wall of the second cavity comprises a side wall of the fourth opening and an inner wall of the block; the first channel forms a first opening of the first channel on the side wall of the fourth opening, the inner wall of the block is shaped as the top wall of the second cavity, the second flow passage penetrates through the block, the bottom wall of the fourth opening forms at least part of the bottom wall of the second cavity, and the third flow passage forms a first opening of the third flow passage on the side wall of the fourth opening and/or the bottom wall of the fourth opening;

or, the inner wall of the block is formed as the bottom wall of the second cavity, the second flow passage is formed in the main body, and the third flow passage forms the first opening of the third flow passage on the side wall of the fourth opening and/or the bottom wall of the block.

7. The fluid management assembly of claim 4 or 5 wherein the valve body comprises a first valve body comprising a first wall and a second valve body comprising a second wall, the first wall being disposed in contact with the second wall or in a gap; the first valve body is positioned above the second valve body, the first valve body is formed with the first opening portion, the second flow passage, the first passage, and a top wall of the second chamber, the second valve body is formed with a bottom wall of the second chamber, and the second opening portion is positioned in the second valve body;

the second chamber comprises a first sub-chamber and a second sub-chamber, the first valve body forms the first sub-chamber, the second valve body forms the second sub-chamber, the opening of the first sub-chamber on the first wall is opposite to the opening of the second sub-chamber on the second wall, the first opening of the first channel is located on the wall of the first sub-chamber, and the first opening of the third flow passage is located on the wall of the second sub-chamber; the bottom wall of the second sub-cavity is provided with a first bottom wall and a second bottom wall, and the first bottom wall is close to the first sub-cavity relative to the second bottom wall.

8. The fluid management assembly of claim 7 comprising a first gap shaped to be recessed relative to a first wall and/or a second wall and a first seal, the first gap surrounding an opening of the first subcavity at the first wall and/or surrounding an opening of the second subcavity at the second wall; or the fluid management assembly comprises an insert and a step, one of the first valve body and the second valve body comprises the insert and the corresponding other comprises the step, the opening of one of the first sub-chamber and the second sub-chamber is formed in the insert, the other is formed in the step, the step and the insert have the first gap therebetween, and the first seal is located in the first gap.

9. The fluid management assembly of claim 7 comprising a valve cover, at least a portion of the valve cover being disposed within the cavity defined by the first open section, the valve cover being fixedly attached to the first open section, the valve cover being sealingly disposed about the first open section at the attachment; the valve cover comprises a first communication channel, a first opening of the first communication channel is formed in the inner end wall of the valve cover, and the first opening of the first communication channel can be communicated with the first cavity;

the first communication passage forms a second opening of the first communication passage at an outer end wall of the valve cover; or the first communication channel forms a second opening of the first communication channel on the side wall of the valve cover, the first valve body comprises a first through hole, the first opening of the first through hole is formed in the first opening part, the first through hole is communicated with the first communication channel, and the second opening of the first through hole is positioned on the first wall; the second valve body includes a second through hole, a first opening of which is formed in the second wall, a second opening of which is formed in the wall of the communicating portion, the first opening of which is disposed opposite to the second opening of the first through hole, and the first through hole is communicated with the second through hole; the fluid management assembly includes a second gap and a second seal disposed in the second gap;

the second gap is recessed relative to the first wall and/or the second wall, and the second gap surrounds the periphery of the first opening of the first through hole and/or the first opening of the second through hole;

or the fluid management assembly comprises a first connecting pipe, the first connecting pipe and the first valve body are arranged in a split mode, the first connecting pipe and the second valve body are arranged in a split mode, one end of the first connecting pipe is located in the first through hole, the other end of the first connecting pipe is located in the second through hole, and a second gap is formed between the first connecting pipe and the wall of the first through hole and between the first connecting pipe and the wall of the second through hole; or the first connecting pipe and one of the first valve body and the second valve body are integrally arranged, and a second gap is formed between the first connecting pipe and the wall of the first through hole or the second through hole.

10. The fluid management assembly of any of claims 8-9 wherein the first flow passage is formed in the first valve body, the first flow passage having an opening in an outer wall of the first valve body;

or, the first valve body includes a first hole portion, the second valve body includes a second hole portion, the cavity of the first flow passage includes a cavity of the first hole portion and a cavity of the second hole portion, and an opening formed in the first wall by the first hole portion is disposed opposite to an opening formed in the second wall by the second hole portion; the fluid management assembly comprises a third gap and a third seal, the third gap being recessed relative to the first wall and/or the second wall, the third gap surrounding an outer periphery of the first bore portion and/or surrounding an outer periphery of the second bore portion; or the fluid management assembly comprises a second connecting pipe, the second connecting pipe is arranged separately from the first valve body, the second connecting pipe is arranged separately from the second valve body, one end of the second connecting pipe is positioned at the first hole part, the other end of the second connecting pipe is positioned at the second hole part, and the second connecting pipe has a third clearance with the wall of the first hole part and the wall of the second hole part; or the second connecting pipe is integrally arranged with one of the first valve body and the second valve body, and a third gap is formed between the second connecting pipe and the wall of the first hole part or the second hole part.

11. The fluid management assembly of claim 7 wherein the first flow passage is formed in the first valve body, the first flow passage having an opening in an outer wall of the first valve body;

or, the first valve body includes a first hole portion, the second valve body includes a second hole portion, the cavity of the first flow passage includes a cavity of the first hole portion and a cavity of the second hole portion, and an opening formed in the first wall by the first hole portion is disposed opposite to an opening formed in the second wall by the second hole portion; the fluid management assembly comprises a third gap and a third seal, the third gap being recessed relative to the first wall and/or the second wall, the third gap surrounding an outer periphery of the first bore portion and/or surrounding an outer periphery of the second bore portion; or the fluid management assembly comprises a second connecting pipe, the second connecting pipe is arranged separately from the first valve body, the second connecting pipe is arranged separately from the second valve body, one end part of the second connecting pipe is positioned in the first hole part, the other end part of the second connecting pipe is positioned in the second hole part, and a third clearance is formed between the second connecting pipe and the wall of the first hole part and between the second connecting pipe and the wall of the second hole part; or the second connecting pipe is integrally arranged with one of the first valve body and the second valve body, and a third gap is formed between the second connecting pipe and the wall of the first hole part or the second hole part.