CN112443679A

CN112443679A - Thermal management system

Info

Publication number: CN112443679A
Application number: CN202011117245.4A
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Sanhua Research Institute Co Ltd
Current assignee: Hangzhou Sanhua Research Institute Co Ltd
Priority date: 2019-06-24
Filing date: 2019-08-28
Publication date: 2021-03-05
Anticipated expiration: 2039-08-28
Also published as: CN112129000A; CN112129000B; CN112443679B

Abstract

The invention discloses a thermal management system, wherein a fluid management assembly of the thermal management system is provided with a conducting channel and a throttling cavity, a first valve core can conduct the throttling channel when the thermal management system heats, the first valve core can conduct the conducting channel when the thermal management system cools, and the thermal management system is provided with the fluid management assembly, so that the thermal management system can be relatively simplified.

Description

Thermal management system

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of thermal management, in particular to a thermal management system.

[ background of the invention ]

Thermal management systems typically employ systems that include multiple valves, such as electronic expansion valves and solenoid valves, that require plumbing connections between the valves, resulting in relatively complex thermal management systems.

[ summary of the invention ]

It is an object of the present invention to provide a relatively simplified thermal management system.

A thermal management system comprising a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a throttling unit, and a fluid management assembly, the fluid management assembly comprising a first valve spool having a communication passage, the fluid management assembly having a throttling chamber and a first chamber, the first valve spool being located in the first chamber and being operable in the first chamber, an outlet of the compressor being in communication with a refrigerant inlet of the first heat exchanger, a refrigerant outlet of the first heat exchanger being in communication with a first connection port of the fluid management assembly, the first connection port being one inlet of the fluid management assembly;

in a heating mode of the thermal management system, the first valve spool places the throttle chamber in communication with the first heat exchanger and the second heat exchanger, the second heat exchanger being in communication with the compressor without passing through the third heat exchanger; in a refrigeration mode of the thermal management system, the first valve core enables the communication channel to be communicated with the first heat exchanger and the second heat exchanger, the second heat exchanger is communicated with the third heat exchanger through the throttling unit, and the throttling unit is opened.

The thermal management system comprises a fluid management assembly, wherein the fluid management assembly is provided with a throttling cavity, the fluid management assembly comprises a first valve core, the first valve core is provided with a conducting channel, when the thermal management system heats, the throttling cavity can be communicated with the first heat exchanger and the second heat exchanger through the first valve core, when the thermal management system cools, the conducting channel can be communicated with the first heat exchanger and the second heat exchanger through the first valve core, the thermal management system comprises the fluid management assembly, and the thermal management assembly can enable the thermal management system to be relatively simplified.

[ 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. 7;

FIG. 10 is a schematic perspective view of a first embodiment of a throttling passage, valve seat mating surface on a first face;

FIG. 11 is a schematic perspective view of a second embodiment of a throttling passage, valve seat mating surface on a first face;

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. 24;

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 cross-sectional schematic view of FIG. 29;

FIG. 31 is a schematic connection diagram of the first embodiment of the thermal management system;

FIG. 32 is a schematic connection diagram of a second embodiment of a thermal management system;

FIG. 33 is a schematic connection diagram of a third embodiment of a thermal management system;

FIG. 34 is a schematic illustration of a first heating mode of the thermal management system of FIG. 31;

FIG. 35 is a schematic diagram of the operation of a cooling mode of the thermal management system of FIG. 31;

FIG. 36 is a schematic illustration of a second heating mode of operation of the thermal management system of FIG. 31;

FIG. 37 is a schematic illustration of a third heating mode of operation of the thermal management system of FIG. 31;

FIG. 38 is a schematic elevation view of the structure of FIG. 1;

FIG. 39 is a cross-sectional view taken along E-E of FIG. 38 with the first valve spool in a third operating position;

FIG. 40 is a cross-sectional view taken along E-E of FIG. 38 with the first valve spool in a first operating position;

FIG. 41 is a cross-sectional view taken along E-E of FIG. 38 with the first valve spool in a second operating position;

FIG. 42 is a cross-sectional view taken along E-E of FIG. 38 with the first valve spool in a fourth operating position;

FIG. 43 is a schematic perspective view of a first embodiment of the valve cover of FIG. 3;

FIG. 44 is a schematic perspective view of a second embodiment of a valve cover;

FIG. 45 is an enlarged partial schematic view of FIG. 3;

FIG. 46 is a schematic view showing the connection of the valve cover to the first opening portion;

FIG. 47 is a schematic diagram of a second embodiment of the first valve spool from a first perspective;

FIG. 48 is a schematic cross-sectional view taken along D-D of FIG. 47;

FIG. 49 is an enlarged schematic view of section C of FIG. 48;

fig. 50 is a schematic diagram of the second embodiment of the first valve spool from a second perspective.

[ detailed description ] embodiments

The fluid management assembly and the thermal management system in 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 to 16 and 38 to 44, 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 is rotated by an excitation magnetic field generated by the stator to drive the motor shaft 1130 to. 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. 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 39, 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.

Referring to fig. 1, 3 and 43, 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 a side wall of the valve body toward an 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 the first opening portion 3110, and the valve cover 4000 is fixedly disposed in the first opening portion 3110. In another embodiment, the fluid management assembly further comprises a snap ring, the connecting portion is formed as a groove in an outer wall of the valve cap, the mating portion is formed as a groove in a side wall of the first opening portion, and the snap ring is opened to fix the valve cap and the valve body after reaching the predetermined position.

The fluid management assembly 10 further includes a first accommodating chamber, a second accommodating chamber, and a sealing member located between the first accommodating chamber and the second accommodating chamber, wherein the second opening of the first communicating passage is located between the first accommodating chamber and the second accommodating chamber in the axial direction of the first opening portion, the first accommodating chamber is closer to the first valve element than the second accommodating chamber, and the first accommodating chamber and the second accommodating chamber surround the circumferential side of the valve cover. In one embodiment, the first receiving cavity is formed as a first groove 4130, the second receiving cavity is formed as a second groove 4210, or the first receiving cavity comprises a cavity formed by the first groove 4130, the second receiving cavity comprises a cavity formed by the second groove 4210, the first groove and the second groove are circumferentially distributed along the outer side wall of the valve cover 4000, the second groove 4210 is located between the outer end wall 4010 of the valve cover 4000 and the external thread of the valve cover 4000, the first groove 4130 is located between the inner end wall 4020 of the valve cover 4000 and the external thread of the valve cover 4000, the sealing member is located between the first groove and the second groove of the valve cover 4000, and the two grooves and the sealing member of the valve cover 4000 are matched with the first opening portion 3110 to seal the valve cover 4000 and the first opening portion 3110. In other embodiments, a groove for placing a sealing member may be disposed in the first opening portion 3110 to seal the valve cover 4000 with the first opening portion 3110. Of course, the valve cover 4000 and the first opening portion 3110 may be welded and sealed, and will not be described in detail.

Referring to fig. 3 and 43, 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 at an inner end wall 4020 of the valve cap, the first communication channel forms a second opening 4302 of the first communication channel at a side wall of the valve cap 4000, and specifically, the valve cap 4000 includes a first hole 4110 and a second hole 4120, a cavity formed by the first hole 4110 communicates with a cavity formed by the second hole 4120, in this embodiment, the first communication channel 4300 includes a cavity formed by the first hole 4110 and a cavity formed by the second hole 4120, an axis of the first hole 4110 is parallel to an axis of the first opening portion 3110, wherein the parallel axes are within ± 10 °, and an axis of the second hole 4120 is perpendicular to the axis of the first opening portion 3110, and wherein the perpendicular axes are between 80 ° and 90 °. Of course, the axis of the second bore 4120 may be angled between 45 ° and 135 ° from the axis of the first bore 4110. An opening of the first hole 4110, i.e., the first opening 4301 of the first communication passage, is formed in the inner end wall of the valve cover 4000, and an opening of the second hole 4120, i.e., the second opening 4302 of the first communication passage, is formed in the side wall of the valve cover 4000, and the opening of the second hole 4120 is located between two grooves of the valve cover 4000 in the axial direction of the first opening portion 3110, so that fluid leakage can be prevented. It will be appreciated that the wall forming the first chamber 100 includes a portion of the wall of the first opening 3110 and the inner end wall of the valve cover 4000, and in other embodiments, the wall forming the first chamber 100 may not include the inner end wall of the valve cover 4000. In the present 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 provided separately from the second sub-valve cap 4200, the first sub-valve cap 4100 is closer to the first valve element 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 passage, and the first opening 4301 is located on an 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. 43-46, the fluid management assembly includes a position limiting device, the position limiting device includes a position limiting recess 4140 and a position limiting pin 3112, the position limiting recess 4140 has an opening on a sidewall of the first sub-valve cover, at least a portion of the position limiting pin is located in the position limiting recess 4140, and the position limiting pin 3112 is integrally or separately disposed with the valve body. In a specific embodiment, the limit recess 4140 has openings at the side wall of the first sub valve cap 4100 and the inner end wall of the first sub valve cap 4100, the opening of the limit recess 4140 at the side wall of the first sub valve cap is integrally connected with the opening of the limit recess 4140 at the inner end wall of the first sub valve cap, the limit pin 3112 is integrally provided with the valve body, the limit pin 3112 protrudes from the side wall of the first opening portion 3310 to the first sub valve cap 4100, when the valve cap 4000 is installed, the limit recess is engaged with the limit pin, the first sub valve cap is placed in a predetermined position, and then the second sub valve cap is screwed, so that the first sub valve cap can be prevented from deviating from the predetermined position, which is beneficial for positioning the second opening 4302 of the first communication channel. Of course, the second sub-valve cap 4100 and the first sub-valve cap 4200 may be integrally provided, which relatively reduces the installation process. In another embodiment, the stopper recessed portion 4140 includes a first stopper recessed portion 4141 and a second stopper recessed portion 4142, the first stopper recessed portion 4141 has an opening at least in an outer end wall of the first sub-bonnet, the opening of the first stopper recessed portion 4141 in the outer end wall of the first sub-bonnet is integrally connected to the opening of the first stopper recessed portion 4141 in the side wall of the first sub-bonnet, the first opening portion 3110 includes a stepped wall 3313, the second stopper recessed portion 4142 has an opening in the stepped wall and the side wall of the first opening portion, the second stopper recessed portion 4142 is integrally connected to the opening of the first opening portion in the stepped wall, the stopper pin is provided separately from the valve body, and the stopper pin 3112 is positioned in the first stopper recessed portion 4141 and the second stopper recessed portion 4142.

Referring to fig. 3 and fig. 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, the first valve core 5000 is a spherical or quasi-spherical structure, the first valve core 5000 can also be a cylindrical structure, the first valve core 5000 includes a mating groove 5300 mating with the valve rod 2300, the valve rod 2300 can extend into the mating groove 5300, and the valve rod 2300 can drive the first valve core 5000 to 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 first valve seat 6100 may also be provided integrally with the valve cover 4000, where the integral provision includes being fixed as one piece and being integrally formed. Specifically, the first valve seat 6100 is fixed and integrated with the inner end wall of the valve cover 4000 in a sealing manner or is assembled and extruded into a whole; more specifically, the inner end wall of the valve cover 4000 is shaped to seat the step of the first valve seat 6100, or at least a portion of the first valve seat 6100 is located at the step of the valve cover 4000, and accordingly, the opening of the first hole 4110 is shaped at the step of the valve cover 4000, and the fluid management assembly 10 may further provide a seal between the first valve seat 6100 and the step of the inner end wall of the valve cover 4000 to enhance the sealing of the first valve seat 6100 and the valve cover 4000. Similarly, the second valve seat is integrated with the first opening portion, including being fixed as a whole and being formed as a single piece, the second valve seat 6200 is fixed with the first opening portion 3110, specifically, the second valve seat 6200 is fixed with the bottom wall of the first opening portion 3110 in a sealing manner, specifically, the bottom wall of the first opening portion 3110 is formed with a concave portion for accommodating the second valve seat 6200, and a sealing member is arranged between the second valve seat 6200 and the bottom wall of the first opening portion 3110 to enhance the sealing and reduce the inner leakage, thereby improving the control accuracy. In other embodiments, the first valve seat 6100 may be formed integrally with the valve cover 4000, or the valve cover 4000 may have the first valve seat 6100, and similarly, the second valve seat 6200 may be formed integrally with the valve body, and the second valve seat 6200 may be formed at the bottom wall of the first opening portion 3110. The fluid management assembly is provided with a first valve seat 6100 and a second valve seat 6200, and the first valve seat 6100 and the second valve seat 6200 can support the first valve core 5000, and the contact positions of the first valve seat 6100 and the second valve seat 6200 and the first valve core 5000 can be sealed in a sliding manner.

The fluid management assembly includes a throttle chamber. Referring to fig. 7 to 11, 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 throttling channel 5100 includes a head end and a tail end, referring to fig. 9 and 10, the first surface is defined, the first surface is perpendicular to the axis of the first opening portion 3110, it can be known that a projection 6120 ' of the mating surface 6120 of the first valve seat on the first surface is a ring surface, when the fluid management assembly throttles, along the projection 6120 ' of the mating surface of the first valve seat in the radial direction, a projection 5110 ' of the head end on the first surface and a projection 5120 ' of the tail end on the first surface are located on two sides of the projection 6120 ' of the mating surface on the first surface, where the two ends of the bottom wall of the head end and the tail end finger throttling groove or two ends of the bottom wall extend into the throttling groove, so that the head end and the tail end of the throttling groove form an outlet. In the present embodiment, the cross-sectional shape of the throttling passage 5100 is rectangular, as shown in fig. 7; of course, the cross-sectional shape of the throttling passage 5100 may be V-shaped or other shapes, and the throttling passage 5100 may extend in a direction substantially the same as the rotational direction of the first valve element 5000, or may have other angles with the rotational direction of the first valve element 5000. The throttling channel 5100 includes a first section, a second section and a third section, wherein the second section includes a tail end, the third section includes a head end, when the fluid management assembly throttles, an opening of the first section faces the mating surface 6120 of the first valve seat, an opening of the second section faces the channel 6110 of the first valve seat, and an opening of the third section faces the first cavity 100, so that fluid in the first cavity 100 enters the valve seat channel after being throttled by the first section. For easy understanding, please refer to fig. 10, a projection 5130 'of the first segment on the first surface is located in a projection 6120' of the first valve seat matching surface, a projection 5140 'of the second segment on the first surface is located in a projection 6110' of the channel of the first valve seat, and a projection 5150 'of the third segment on the first surface is located in a projection of the first cavity, so that the opening of the throttling cavity is relatively increased, and fluid can conveniently enter the throttling cavity, wherein the projection 5110' of the head end is located in the projection of the first cavity, and the projection 5120 'of the tail end is located in the projection 6110' of the channel of the first valve seat. In another embodiment, referring to fig. 11, the projection 5150 'of the third segment on the first surface includes two portions, both of which are located outside the projection 6120' of the mating surface, i.e. the opening of the third segment faces the first chamber, the projection 5130 'of the first segment also includes two portions, both of which are located on the projection 6120' of the mating surface, and the projection 5140 'of the second segment is located on the projection 6110' of the passage of the first valve seat, so that the fluid in the first chamber 100 enters the passage of the first valve seat through two throttling paths, thereby increasing the throttling passage and improving the efficiency. The walls forming the throttling cavity comprise throttling holes, in particular, the throttling channel can also be a throttling hole, the throttling channel 5100 is provided with two openings on the outer wall of the first valve core 5000, the two openings of the throttling hole are also the head end and the tail end of the throttling channel, when the fluid management assembly throttles, the two openings of the throttling channel 5100 are positioned on two sides of the annular surface, one opening of the throttling channel 5100 is communicated with the first cavity 100, and the other opening of the throttling channel 5100 is communicated with the channel of the first valve seat 6100 or the channel of the second valve seat 6200, and detailed description is omitted.

Referring to fig. 47-50, the throttling passage 5100 is shaped as a throttling groove, the walls of the throttling passage include a first bottom wall 5110 and a second bottom wall 5120, the first bottom wall 5110 and the second bottom wall 5120 are arranged in an intersecting manner, where the intersecting manner means that the first bottom wall 5110 and the second bottom wall 5120 have a common intersecting line or a common intersecting area, and the common intersecting area may be a round or a chamfer between the first bottom wall 5110 and the second bottom wall 5120. In the direction of the motion or rotation of the first valve core 5000, the first bottom wall 5110 extends from the outer wall of the first valve core to the second bottom wall 5120, and the second bottom wall 5120 extends from the first bottom wall 5110 to the outer wall of the first valve core 5000, it is understood that the wall at the head end of the throttling passage 5100 may be a part of the first bottom wall 5110, the wall at the tail end of the throttling passage 5100 may be a part of the second bottom wall 5120, and of course, the wall at the head end of the throttling passage 5100 may be a part of the second bottom wall 5120, and the wall at the tail end of the throttling passage 5100 may be a part of the first bottom wall 5110. In this embodiment, the first bottom wall 5110 is a cambered surface, and the first bottom wall 5110 is convex to the same direction as the opening of the throttling channel 5000, but the first bottom wall may also be in other shapes, such as a plane or a combination of a plane and a cambered surface, and will not be described in detail. Referring to fig. 49, the second bottom wall 5120 includes a straight section 5121 and a first arc section 5122, the first arc section 5122 extends from the outer wall of the first valve core 5000 to the straight section 5120, and the straight section 5121 is closer to the center of the first valve core 5000 than the first arc section 5122 along the radial direction of the first valve 5000. In other embodiments, the second bottom wall 5120 may only include the first arc segment 5122, and the first arc segment 5122 extends from the outer wall of the first valve core 5000 toward the first bottom wall 5110. The second bottom wall is provided with the first arc section 5122, so that the sharpness of the joint of the second bottom wall 5120 and the outer wall of the first valve core 5000 is reduced, and the abrasion of the first valve core to the valve seat matching surface can be relatively reduced. Likewise, the first bottom wall is provided with a second arc section extending from the outer wall of the first valve core towards the second bottom wall, which will not be described in detail.

In this embodiment, in the rotation direction of the first valve element 5000, the opening length of the throttling passage 5100 is greater than the length of the first bottom wall 5110, the opening length of the throttling passage 5100 is greater than the length of the second bottom wall 5120, and the opening of the throttling passage 5100 is longer than both the first bottom wall 5110 and the second bottom wall 5120, so that a machining tool can conveniently move in the throttling passage, for example, the machining tool can conveniently enter and exit the throttling passage, the machining tool can conveniently move in the throttling passage, and the difficulty in machining and forming the first valve element is reduced. Referring to fig. 50, the walls of the throttling passage 5100 further include a first side wall 5130 and a second side wall, the first side wall 5130 and the second side wall are oppositely arranged, the first bottom wall 5110 is located between the first side wall 5130 and the second side wall, the second bottom wall 5120 is located between the first side wall 5130 and the second side wall, and an included angle between a plane of the first bottom wall 5110 and a plane of the first side wall 5130 may be 90 degrees, or may be greater than or less than 90 degrees; similarly, the included angle between the plane of the first bottom wall 5110 and the plane of the second side wall may be 90 °, or may be greater or smaller than 90 °. The first side wall 5130 includes a first side line 5131 and a second side line 5132, wherein the first side line 5131 is also located at the outer wall of the first valve spool 5000, or the first side line 5131 is the intersection line or area of the outer wall of the first valve spool 5000 and the first side wall 5130; the second side line 5132 is also located at the first bottom wall 5110, or the second side line 5132 is an intersection line or an intersection area of the first bottom wall 5110 and the first side wall 5130, in this embodiment, the arc center of the first side line 5131 and the arc center of the second side line 5132 are offset, and the arc center of the first side line 5131 and the arc center of the second side line 5132 are offset, so as to facilitate the processing and forming of the throttling passage 5100. In the action direction of the first spool 5000, the radial distance between the first side line 5131 and the second side line 5132 decreases; or, in the direction of motion of the first valve spool 5000, the depth of the throttle groove decreases; also, or in the direction of action of the first valve spool 5000, the radial spacing between the opening of the throttling passage 5100 and the first bottom wall 5110 decreases. Thus, along the action direction of the first valve core 5000, the cross-sectional area of the throttling passage 5100 is reduced, that is, the fluid flow is reduced, and the cross-sectional area of the throttling passage 5100 can be adjusted by adjusting the rotation angle of the first valve core 5000, so that the cross-sectional area of the throttling passage 5100 is adjusted, and the size of the throttling passage 5100 is conveniently adjusted to adjust the flow. Further, the first side line 5131 is parallel to the direction of motion of the first valve spool 5132 in the direction of motion of the first valve spool 5000, such that the fluid management assembly 10 adjusts the cross-sectional area of the restricted passage 5100 relatively quickly and efficiently by rotating the first valve spool 5000.

In this embodiment, referring to fig. 48, an included angle between the first bottom wall 5110 and the second bottom wall 5120 is a first included angle E, where the first included angle E is greater than or equal to 80 ° and less than or equal to 160 °; the included angle described herein may be not only an included angle between a plane where the first bottom wall 5110 is located and a plane where the second bottom wall 5120 is located, but also an included angle between a tangent plane of the first bottom wall 5110 and a tangent plane of the second bottom wall 5120, an included angle between a tangent plane of the first bottom wall 5110 and a plane where the second bottom wall 5120 is located, or an included angle between a tangent plane of the second bottom wall 5120 and a plane where the first bottom wall 5110 is located. In the rotation process of the first valve core 5000, as the distance between the tail end of the throttling passage 5100 and the matching surface is gradually reduced, and the distance between the second bottom wall 5120 and the matching surface is also gradually reduced, in the throttling process of the fluid management assembly, when the distance between the tail end of the throttling passage 5100 and the matching surface of the first valve seat 6100 is greater than the distance between the matching surface of the first valve seat 6100 and the first bottom wall 5110, the flow regulation of the first valve core 5000 can be normally performed; when the distance between the tail end and the first valve seat mating surface 6120 is smaller than the distance between the first valve seat mating surface 6120 and the first bottom wall 5110, a cavity formed by the tail end of the throttling passage 5100 and the first valve seat mating surface 6120 is a fluid passage, and the throttling effect is poor or not satisfactory, so that the included angle between the first bottom wall 5110 and the second bottom wall 5120 is limited, the distance of the first bottom wall 5110 which is relatively prolonged or the interference of the tail end is delayed, that is, the adjusting range of the throttling passage 5100 is prolonged, and the performance of the fluid management assembly is improved.

Referring to fig. 7-9 and 39, 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 39, 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, i.e., a first opening and a second opening, the first opening 3121 of the first passage 3120 is located at a wall forming the second chamber 200, and thus the first passage 3120 communicates with the second chamber 200, the second opening 3122 of the first passage 3120 is located at a bottom wall of the first opening portion 3110, and thus the second opening 3122 of the first passage 3120 communicates with the passage of the second valve seat 6200, in the present embodiment, an axis of the first passage 3120 is parallel to an axis of the first opening portion 3110, and the parallel includes a case of being coincident, where the parallel means an 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 includes a conducting pipe 700, and the conducting pipe 700 may also be formed by processing the same profile as the valve body, and then the conducting pipe 700 has a first port 701. The conduit 700 may be provided separately from the valve body and assembled together, specifically, the conduit 700 has a first port 701, a second port, and a conduit lumen communicating with the first port 701 and the second port, the first port 701 is located at a first end of the conduit 700, the second port is located at a second end of the conduit 700, the second end of the conduit 700 is located in the second flow channel 400 and is fixed relatively to the wall forming the second flow channel 400 and is sealed at the connection therebetween, the first port 701 of the conduit 700 is located in the second chamber 200, and the first port 701 faces the bottom wall of the second chamber 200. 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.

In the present embodiment, referring to fig. 18, the sidewall of the second cavity 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 conducting tube 700, the axis of the first passage 3120 is located on the first cross section, the intersection of the wall forming the first passage 3120 and the first cross section includes a first intersection 3123 and a second intersection 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 conducting tube 700 and the first cross section is defined as a second circular line 700 ', the second intersection 3124 is closer to the second circular line 700 ' than the first intersection 3123, the extension of the first intersection 3123 and the second intersection 3124 is located on the same side of the second circular line 700 ' in the radial direction of the first circular line 200 ', or, the extension of the second intersection 700 ' is not located between the extension of the first intersection 3123 and the extension of the second intersection 3124 in the radial direction of the first circular line 200 ', and the extension of the second intersection 3124 is also included in the case where the extension of the second intersection 3124 is tangent to the first circular line, the extension line of the first intersecting line 3123 is tangent to the first loop line 200'. In this embodiment, the first loop line and the second loop line are both circular, and the first intersecting line 3123 is parallel to the second intersecting line 3124, where it should be noted that: the first loop line may be arc-shaped, rectangular or other shapes, and similarly, the second loop line may be arc-shaped, rectangular or other shapes, and the first intersection line 3123 and the second intersection line 3124 may also be non-parallel; the radial direction of the first loop 200' refers to the direction in which the central or near-central region of the first loop points toward the first loop. 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 sub-walls of the second chamber 200 include a first sub-wall 221 and a second sub-wall 222, and along the axial direction of the conducting pipe 700, the distance from the second sub-wall 222 to the first port 701 of the conducting pipe 700 is greater than the distance from the first sub-wall 221 to the first port 701 of the conducting pipe 700, so that after the gas-liquid separation of the fluid, the liquid fluid is collected in the second sub-wall 222, which is convenient for the liquid fluid to be collected in the second sub-wall, and the second sub-wall is provided with a discharge port, which is beneficial for the liquid fluid to be discharged; the first sub-wall is higher than the second sub-wall, the first sub-wall has no or only a small amount of liquid fluid, the first port 701 of the conduit 700 faces the first sub-wall 221, and the projection of the first port 701 of the conduit 700 along the axial direction of the conduit is located at the first sub-wall, which is beneficial to prevent the liquid fluid at the sub-wall of the second chamber 200 from being sucked away by the conduit 700. Of course, the first sub-wall 221 and the second sub-wall 222 may be integrally formed or may be separately formed. In this embodiment, the second sub-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 sub-wall, namely, the second sub-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 in the second sub-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 a sub-wall of the second chamber 200 and/or 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 sub-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 has only a conducting function.

Referring to fig. 1, 3 and 39, 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 also 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 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 sidewall of the valve cover and circumferentially distributed along the sidewall of the valve cover, of course, the first groove may also 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.

The fluid management assembly 10 includes a valve port and a second valve spool, the third flow channel 500 includes a cavity formed by the valve port, or the cavity formed by the valve port is a part of the third flow channel 500, and the second valve spool can abut the valve port to block the third flow channel 500. 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. In a specific embodiment, the mounting portion 3213 has internal threads, the engaging portion of the valve support 7100 is formed as external threads, and the internal threads of the mounting portion 3213 and the external threads of the fixing portion are engaged with each other to fix the check valve member 7000 and the second opening portion 3210; the mating or mounting portion 3213 of the valve support 7100 is provided with a groove in which a seal is placed to seal the valve support 7100 with the second opening 3210. In other embodiments, the mounting portion 3213 has a step that limits the valve support 7100 and a groove in which a snap ring is placed, the step of the mounting portion 3213 and the snap ring achieving fixation of the valve support 7100. 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 valve spool 7200 includes a spool rod 7230, a first end portion 7210, and a second end portion 7220, the first end portion 7210, the second end portion 7220 are integrally provided with the spool rod 7230 or integrally welded, the first end portion 7210 and the second end portion 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. 38-42 and 3, in operation of the fluid management assembly, the first valve spool 5000 is rotatable within the first chamber 100, and the operating positions of the first valve spool 5000 include at least a first operating position and a second operating position. In the solution of this embodiment, the first flow passage 300 is used as a passage for fluid entering the first chamber 100, and the fourth flow passage is used as a passage for fluid exiting the first chamber 100, wherein the fourth flow passage includes the passage 6110 of the first valve seat, the cavity of the first hole 4110, the cavity of the second hole 4120, the cavity of the first through hole 3130, and the cavity of the second through hole 3220, and wherein the first communication passage 4300 includes the cavity of the first hole 4110 and the cavity of the second hole 4120; the first passage 3120 is another passage through which the fluid flows out of the first chamber 100, and the fluid of the first chamber 100 can enter the second chamber; after the fluid is gas-liquid separated in the second chamber 200, the second flow channel 400 serves as a passage for gas to flow out of the second chamber 200, and the third flow channel 500 serves as a passage for liquid to flow out of the second chamber 200. Specifically, referring to fig. 40 and 3, the fluid enters the first chamber 100 through the first flow channel 300, in the first working position of the first valve element 5000, the conducting channel 5200 of the first valve element communicates with the channel 6110 of the first valve seat, the first valve element 5000 closes off the channel between the first chamber 100 and the channel of the second valve seat 6200, and further the second chamber 400 does not communicate with the first chamber 100, the fluid in the first chamber 100 leaves the first chamber 100 through the fourth flow channel, enters the communicating portion 520 of the third flow channel 500, and then exits the fluid management assembly through the communicating portion 520, and at this time, the fluid management assembly is only a channel of the fluid. In the second working position of the first valve element, referring to fig. 3 and fig. 41, the first cavity 100 and the second cavity 200 are communicated, the throttling passage 5100 of the first valve element 5000 is communicated with the passages of the first cavity 100 and the second valve seat 6200, the fluid in the first cavity 100 enters the second cavity 200 after being throttled by the throttling passage 5100, the throttled fluid is separated into gas and liquid in the second cavity 200, the gaseous fluid enters the second flow passage 400 through the conducting pipe 700 and is discharged out of the fluid management assembly, the liquid fluid enters the third flow passage 500 through the first opening 501 of the third fluid and is discharged out of the fluid management assembly through the third flow passage 500, at this time, the fluid management assembly has throttling and gas and liquid separating functions, and if the third flow passage 500 further includes the throttling part 510, the fluid management assembly 10 further has a secondary throttling function on the fluid.

In other embodiments, the operating positions of the first spool 5000 of the fluid management assembly further include a third operating position and a fourth operating position, and in the third operating position of the first spool, please refer to fig. 39 and 3, the first spool 5000 does not communicate the first cavity 100 with the passage of the second valve seat 6200, the throttling passage 5100 communicates the first cavity 100 with the passage 6110 of the first valve seat, and further, the first cavity 100 communicates with the fourth flow passage through the throttling passage 5100, and then the fluid in the first cavity 100 flows through the fourth flow passage after throttling through the throttling passage 5100, and then enters the communicating part 520 of the third flow passage 500, and then exits the fluid management assembly 10 through the communicating part 520, and the fourth flow passage includes the passage 6110 of the first valve seat, the cavity of the first hole 4110, the cavity of the second hole 4120, the cavity of the first through hole 3130, and the cavity of the second through hole 3220, wherein the first through passage 4300 includes the cavity of the first hole 4110 and the cavity of the second hole 4120. In the fourth operating position of the first valve element, referring to fig. 42 and 3, the first valve element 5000 does not connect the first chamber 500 with the passage 6110 of the first valve seat, the throttling passage 5100 connects the first chamber 100 with the passage of the second valve seat 6200, so that the first chamber 100 is connected with the second chamber 200, the fluid entering the second chamber 200 is separated from the gas and the liquid, the gaseous fluid is discharged out of the fluid management assembly 10 through the second passage 400, and the liquid fluid is discharged out of the fluid management assembly 10 through the third passage 500. At this time, the fluid management assembly has throttling and gas-liquid separating functions, and if the third flow passage 500 further includes the throttling part 510, the fluid management assembly 10 also has a secondary throttling function on the fluid.

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 may be formed in the valve support base 7100 ', or may be formed in the valve element guide portion in other embodiments, or may be formed in the small diameter portion 3242 so that the second valve element 7200' and the valve port portion are substantially coaxial with each other. 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 inside of the body, the fourth opening 3310 has an opening at 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 channel is shaped at 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 at 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 a second hole portion 3230, the second hole portion 3230 and the second connection pipe form the third gap 3260, the second connection pipe 3180 is integrally formed with the first valve body, assembly is facilitated, and leakage risk is reduced, and the second connection pipe 3180 may also be integrally formed with the second valve body, which 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.

Referring to fig. 31, in one embodiment of the thermal management system, a vehicle thermal management system is taken as an example, and the fluid in the thermal management system is generally a refrigerant. The thermal management system comprises a compressor 40, a fluid management assembly 10, a first heat exchanger 20 and a second heat exchanger 50, the compressor 40 comprising an outlet 41, a first inlet 42 and a second inlet 43, the first inlet 42 being a low pressure inlet and the second inlet 43 being a relatively high pressure inlet. The first heat exchanger 20 can be in communication with the outlet 41 of the compressor, and the high temperature and pressure refrigerant releases heat in the first heat exchanger 20 to heat the gas flowing through the first heat exchanger 20, thereby increasing the temperature of the gas stream. Taking the application of the thermal management system to a vehicle as an example, the second heat exchanger 50 is disposed at a front end of the vehicle, where the front end of the vehicle refers to a position where the second heat exchanger can exchange heat with ambient air, specifically, the refrigerant can release heat to or absorb heat from the ambient air at the second heat exchanger 50, and the second heat exchanger can exchange heat with the ambient air. The heat management system further comprises a third heat exchanger 30, a throttling unit 70 is further arranged in front of a refrigerant inlet of the third heat exchanger 30, the refrigerant is throttled by the throttling unit 70 and then absorbs heat of airflow flowing through the third heat exchanger 30 in the third heat exchanger 30, so that the temperature of the airflow is reduced, the first heat exchanger 20 and the third heat exchanger 30 are arranged in an air duct of an air conditioning box of the vehicle, the first heat exchanger 20 is arranged in the downwind direction of the third heat exchanger 30, and when the heat management system works, the refrigerant in the first heat exchanger 20 and the refrigerant in the third heat exchanger 30 exchange heat with the airflow in the air conditioning box, so that the temperature of the airflow in the air conditioning box is adjusted, and further the temperature of a. The structure and description of the fluid management assembly 10 is described with reference to fig. 1-30 and the above description, and will not be described in detail. Referring to fig. 31 in combination with fig. 3 and 39, in the technical solution of the present embodiment, the refrigerant outlet of the first heat exchanger 20 is communicated with the first connection port 1 of the fluid management assembly, the second inlet 43 of the compressor is communicated with the second connection port 2 of the fluid management assembly, the first port of the second heat exchanger 50 is communicated with the third connection port 3 of the fluid management assembly, and the second port of the second heat exchanger 50 can be communicated with the first inlet 42 of the compressor 40 or communicated with the first inlet 42 of the compressor 40 through the gas-liquid separator 80; in the present embodiment, the thermal management system is provided with a stop valve 60, the stop valve 60 is disposed between the second port of the second heat exchanger 50 and the first inlet 42 of the compressor to control whether the second port of the second heat exchanger 50 is communicated with the first inlet 42 of the compressor; the second port of the second heat exchanger 50 can also communicate with the third heat exchanger 30 through the throttle unit 70, and the refrigerant outlet of the third heat exchanger 30 communicates with the first inlet 42 of the compressor or communicates with the first inlet 42 of the compressor through the gas-liquid separator 80. The heat management system further comprises a temperature damper, wherein the temperature damper is arranged between the first heat exchanger 20 and the second heat exchanger 50 along the airflow direction, and the temperature damper can be used for opening or closing or adjusting the heat exchanger area of the first heat exchanger 20 so as to control the heat exchange quantity of the first heat exchanger 20.

In other embodiments, the thermal management system includes a refrigerant system, a first coolant system, and/or a second coolant system, wherein the first heat exchanger 20 and/or the second heat exchanger 50 are two-channel heat exchangers, one of the channels is a refrigerant channel, the refrigerant channel is a part of the refrigerant system, the other channel is a coolant channel, the first coolant system includes the coolant channel of the first heat exchanger 20, the first pump 201, and the fourth heat exchanger 202, the coolant channel of the first heat exchanger 20, the first pump 201, and the fourth heat exchanger 202 are in serial communication, and the fourth heat exchanger 202 is located in an air duct of the air conditioning cabinet. The second cooling liquid system comprises a cooling liquid flow channel of the third heat exchanger 30, a second pump 301 and a fifth heat exchanger 302, the cooling liquid flow channel of the second heat exchanger 50, the second pump 301 and the fifth heat exchanger 302 are communicated in series, and the fifth heat exchanger 302 is arranged in an air duct of the air-conditioning box. Taking the first coolant system as an example, the coolant of the coolant system exchanges heat with the coolant of the first coolant system in the first heat exchanger 20 to adjust the temperature of the coolant of the first coolant system, and the coolant of the first coolant system exchanges heat with the airflow in the air conditioning box in the fourth heat exchanger 202 to adjust the temperature of the airflow in the air conditioning box, so as to adjust the temperature of the passenger compartment; likewise, the second coolant system is the same as described above and will not be described in detail. Referring to fig. 33, the embodiment shown in fig. 33 is the case where the thermal management system includes a refrigerant system, a first cooling liquid system and a second cooling liquid system, in this embodiment, the fourth heat exchanger 202 is arranged downstream of the fifth heat exchanger 302, and the first pump 201 and the second pump 301 are used for controlling whether the first cooling liquid system and the second cooling liquid system participate in heat exchange.

The thermal management system includes a heating mode and a cooling mode, wherein the heating mode includes at least one of a first heating mode, a second heating mode, and a third heating mode. Referring to fig. 34 and 41, in the first heating mode of the thermal management system, the first valve spool is in the second operating position, that is, the first cavity 100 is communicated with the second cavity 200, and specifically, the first cavity is communicated with the second cavity through the throttling passage 5100; the high-temperature and high-pressure refrigerant releases heat in the first heat exchanger 20, the refrigerant releasing heat in the first heat exchanger 20 enters the first flow channel 300 through the first connecting port 1, then enters the first cavity 100 through the first flow channel 300, due to throttling of the throttling channel 5100, the refrigerant in a gas-liquid mixed state is subjected to gas-liquid separation in the second cavity 200, the gaseous refrigerant flows through the second flow channel 400, then enters the second inlet 43 of the compressor through the second connecting port 2 and participates in the next cycle, the liquid refrigerant in the second cavity 200 enters the first port of the second heat exchanger 50 through the third flow channel 500 and the third connecting port 3, the refrigerant evaporates and absorbs heat in the second heat exchanger 50, and the refrigerant enters the first inlet 42 of the compressor or enters the first inlet 42 of the compressor through the gas-liquid separator 80 after absorbing heat. In this embodiment, the fluid management assembly has throttling and gas-liquid separating functions, and the gaseous refrigerant in the second chamber enters the second inlet 43 of the compressor, so that the effect of air supply and enthalpy increase is achieved, and the heating performance of the thermal management system is improved. It is to be emphasized here that the first heating mode includes at least the following two cases: the first case: the third flow channel 500 only includes the communication portion 520, that is, the third flow channel only has a communication function, and the refrigerant enters the communication portion when the refrigerant pressure in the second chamber 200 is not changed or when the refrigerant pressure in the second chamber is a small pressure difference, or the refrigerant pressure in the second chamber is the same as the refrigerant pressure in the communication portion or the refrigerant pressure in the second chamber has a small pressure change; the second case: the third flow channel 500 includes a communicating portion 520 and a throttling portion 510, the refrigerant in the second chamber 200 enters the communicating portion after being throttled and depressurized again by the throttling portion 510, and the refrigerant after being throttled and depressurized for the second time enters the second heat exchanger 50, so as to improve the heat absorption performance of the refrigerant in the second heat exchanger 50, and further, the heating performance of the first heat exchanger 10 is improved.

Referring to fig. 37 and 39, in the second heating mode of the thermal management system, the first valve spool 5000 is in the third operating position, that is, the throttling passage 5100 communicates the first cavity 100 and the fourth flow passage 600; the high-temperature and high-pressure refrigerant releases heat in the first heat exchanger 20, the refrigerant releasing heat in the first heat exchanger 20 enters the first flow channel 300 through the first connection port 1, enters the first cavity 100 through the first flow channel 300, due to the throttling of the throttling channel 5100, the relatively liquid refrigerant enters the first port of the second heat exchanger 50 through the fourth flow channel 600 and the third connection port 3, the refrigerant evaporates in the second heat exchanger 50 to absorb heat, and the refrigerant enters the first inlet 42 of the compressor after absorbing heat or enters the first inlet 42 of the compressor through the gas-liquid separator 80.

Referring to fig. 36 and 42, in a third heating mode of the thermal management system, the first valve spool 5000 is in a fourth operating position, i.e., the communication passage 5200 communicates the first chamber 100 and the second chamber 200; the high-temperature high-pressure refrigerant releases heat in the first heat exchanger 20, the refrigerant releasing heat in the first heat exchanger 20 enters the first flow channel 300 through the first connection port 1, enters the first cavity 100 through the first flow channel 300, the refrigerant in the first cavity 100 enters the second cavity 200 through the conducting channel 5200, the refrigerant in the second cavity undergoes gas-liquid separation, the gaseous refrigerant enters the second inlet 43 of the compressor through the second flow channel to participate in the next cycle, the liquid refrigerant enters the first port of the second heat exchanger 50 through the third flow channel and the third connection port 3, the refrigerant evaporates and absorbs heat in the second heat exchanger 50, and the refrigerant enters the first inlet 42 of the compressor after absorbing heat or enters the first inlet 42 of the compressor through the gas-liquid separator 80. It is to be emphasized here that the third heating mode includes at least the following two cases: in the first case, the third flow passage includes only the communication part 520, that is, the third flow passage has only a communication function, the refrigerant in the second chamber 200 enters the second heat exchanger 50, and releases heat in the second heat exchanger 50, and at this time, the third heating mode is applied to the case where the second heat exchanger 50 defrosts; in the second case, the third flow path includes a communicating portion 520 and a throttling portion 510, the refrigerant in the second chamber 200 enters the communicating portion after being throttled and depressurized by the throttling portion 510, the refrigerant after being throttled and depressurized enters the second heat exchanger 50, and the refrigerant absorbs heat in the second heat exchanger 50, and at this time, the third heating mode is applied to a case where the heating demand on the first heat exchanger is not high.

Referring to fig. 35 and 40, in the cooling mode of the thermal management system, the first valve spool 5000 is in the first operating position, that is, the communication passage 5200 communicates the first chamber 100 with the fourth flow passage 600; the temperature air door is closed, the first heat exchange exchanger 10 exchanges little or no heat, the refrigerant enters the first flow channel 300 through the first connecting port 1, enters the first cavity 100 through the first flow channel 300, the refrigerant in the first cavity 100 enters the fourth flow channel through the conducting channel 5200, and then enters the second heat exchanger 50 through the third connecting port 3, the high-temperature and high-pressure refrigerant releases heat in the second heat exchanger 50, the throttling unit 70 is opened, the refrigerant enters the third heat exchanger 30 after being throttled by the throttling unit 70, the refrigerant absorbs heat in the second heat exchanger 50 relative to the liquid refrigerant, the temperature refrigerant in the air-conditioning box is reduced, and then enters the first inlet 42 of the compressor or enters the first inlet 42 of the compressor through the gas-liquid separator 80, and participates in the next cycle.

In another embodiment of the thermal management system, referring to fig. 32, as compared to the first embodiment of the thermal management system, the thermal management system does not include the third heat exchanger 30, and the second port of the second heat exchanger 50 is in communication with only the first inlet 42 of the compressor or in communication with the first inlet 42 of the compressor via the gas-liquid separator. It will be appreciated that in this embodiment, the thermal management system has only a heating mode, and not a cooling mode. It should be noted that the above two forms of thermal management systems are taken as examples and do not limit the concept of the present invention, and the heating mode of some thermal management systems is the same as or equivalent to the above heating mode and should fall into the protection scope of the present invention.

It should be noted that: although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that various combinations, modifications and equivalents of the present invention can be made by those skilled in the art, and all technical solutions and modifications thereof without departing from the spirit and scope of the present invention are encompassed by the claims of the present invention.

Claims

1. A thermal management system comprising a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a throttling unit, and a fluid management assembly, the fluid management assembly comprising a first valve spool having a communication passage, the fluid management assembly having a throttling chamber and a first chamber, the first valve spool being located in the first chamber and being operable in the first chamber, an outlet of the compressor being in communication with a refrigerant inlet of the first heat exchanger, a refrigerant outlet of the first heat exchanger being in communication with a first connection port of the fluid management assembly, the first connection port being one inlet of the fluid management assembly;

2. The thermal management system of claim 1, wherein the fluid management assembly has at least one outlet, the outlet of the fluid management assembly being in communication with the inlet of the second heat exchanger, the first connection port being in communication with the outlet of the fluid management assembly through the vent passage in a heating mode of the thermal management system, and the first connection port being in communication with the outlet of the fluid management assembly through the throttle chamber in a cooling mode of the thermal management system.

3. The thermal management system of claim 1 or 2, wherein the fluid management assembly comprises a valve seat having a mating surface that mates with the first valve spool, the first valve spool comprising a throttling groove having an opening in an outer wall of the first valve spool, a wall forming the throttling chamber passage comprising the throttling groove and the mating surface of the valve seat; or the first valve core comprises an orifice hole, the orifice hole is provided with two openings on the outer wall of the first valve core, and the wall of the throttling cavity comprises the orifice hole of the first valve core.

4. The thermal management system of claim 3, wherein the valve seat comprises a valve cover, a valve body, a first valve seat, and a second valve seat, the valve cover cooperating with the first valve seat to retain the first valve seat within the valve body;

the fluid management assembly includes an inlet passage and two outlet passages, the inlet passage being a first flow passage having a first connection port in an outer wall of the valve body, one of the outlet passages being at least partially formed in the first valve seat and the valve cover, and the other of the outlet passages being partially formed in the second valve seat.

5. The thermal management system of claim 4, wherein the valve cover has a first communication channel that is part of one of the outflow channels, the first communication channel forming an outlet of the fluid management assembly in the outer wall of the valve cover and communicating with the inlet of the second heat exchanger;

wherein the other outflow channel forms another outlet in the valve body and the outlet communicates with the inlet of the second heat exchanger.

6. The thermal management system of any of claims 1-5, wherein said fluid management device comprises a valve cover, a first valve seat and a second valve seat, said fluid management assembly having two outflow passages, one of said outflow passages being at least partially formed in said first valve seat and said valve cover, the other of said outflow passages being at least partially formed in said second valve seat, said first valve element having at least a first operating position and a second operating position;

in the first working position, the outflow passage at least partially formed in the first valve seat and the valve cover is communicated with the first cavity through the conducting passage, and in the second working position, the outflow passage at least partially formed in the second valve seat is communicated with the first cavity through the throttling cavity.

7. The thermal management system of claim 6, wherein the first valve spool has at least a third operating position and a fourth operating position;

in the third working position, the outflow passage at least partially formed in the first valve seat and the valve cover is communicated with the first cavity through the throttling cavity, and in the fourth working position, the outflow passage partially formed in the second valve seat is communicated with the first cavity through the conducting passage.

8. The thermal management system of claim 7, applied to a vehicle, wherein the first heat exchanger and the third heat exchanger are disposed in a wind tunnel of the vehicle, and the third heat exchanger is disposed upwind of the first heat exchanger;

the first valve core is spherical or quasi-spherical or cylindrical.