CN113738916B

CN113738916B - Reversing valve

Info

Publication number: CN113738916B
Application number: CN202110587558.4A
Authority: CN
Inventors: 刘文策
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2020-05-29
Filing date: 2021-05-27
Publication date: 2022-07-15
Anticipated expiration: 2041-05-27
Also published as: CN113738915A; CN113738915B; CN113738916A

Abstract

The present disclosure relates to a reversing valve that includes a valve body, a spool assembly, and an actuation assembly. An inlet, at least two outlets and an internal flow passage communicating the same inlet with the plurality of outlets are formed on the valve body. Each internal flow channel is provided with a valve port matched with the valve core assembly, the valve ports correspond to the valve core assemblies one by one, the valve core assemblies are movably arranged on the valve body, and the actuating assembly is used for actuating the valve core assemblies to enable the inlet to be selectively and completely communicated with one of the outlets or enable the inlet to be simultaneously communicated with a plurality of outlet parts and realize flow distribution by adjusting the through-flow sectional areas of the corresponding valve ports. The valve core component is plugged in the valve port or separated from the valve port, so that an inlet and an outlet on the internal flow passage are cut off or completely communicated, and the function of switching the flow direction of liquid is realized. Alternatively, the same inlet can be made to communicate with multiple outlets simultaneously, distributing the flow.

Description

Reversing valve

Technical Field

The disclosure relates to the field of electric automobile thermal management systems, in particular to a reversing valve.

Background

The electric automobile heat management system comprises a cooling liquid circulation system which comprises a heat exchanger, a water storage kettle, an electric water pump, an electronic water valve, an air conditioner, a PTC heater, a radiator and the like, wherein the cooling liquid circulation system is supplied to a power battery pack, a motor controller, a warm air core body and the like through pipelines to cool or heat the power battery pack, the motor controller, the warm air core body and the like, and the electronic water valve is used for switching the flow direction of cooling liquid. In some vehicles, only one PTC heater is provided, and when the outside environment temperature is low, the PTC heater needs to provide the heated coolant for the warm air core and the power battery pack at the same time, and then the coolant output by the PTC heater needs to be distributed appropriately. However, the existing electronic water valves generally only have the function of switching the flow direction of the liquid, and thus the requirement for the distribution of the cooling liquid cannot be met. When fluid needs to be dispensed, more complex piping and additional valves are required to achieve this, which increases the complexity of the system.

Disclosure of Invention

It is an object of the present disclosure to provide a diverter valve that is capable of both switching the flow direction of a liquid and distributing the flow rate of the liquid flowing therethrough.

In order to achieve the above object, the present disclosure provides a reversing valve, which includes a valve body, a valve core assembly, and an actuating assembly, where an inlet, at least two outlets, and an internal flow channel connecting the same inlet to the outlets are formed on the valve body, a valve port matched with the valve core assembly is formed on each internal flow channel, the valve ports correspond to the valve core assemblies one to one, the valve core assembly is movably disposed on the valve body, and the actuating assembly is configured to actuate the valve core assembly so that the inlet is selectively and completely communicated with one of the outlets, or is partially communicated with the outlets at the same time, and implements flow distribution by adjusting the flow cross-sectional areas of the corresponding valve ports.

Optionally, a corresponding fluid distributing body is formed on each internal flow channel, a first cavity and a second cavity are formed on each fluid distributing body, the first cavity is always communicated with the inlet on the internal flow channel where the first cavity is located, the second cavity is always communicated with the outlet on the internal flow channel where the second cavity is located, and the first cavity is communicated with the second cavity through the valve port.

Optionally, a partition plate is disposed in the fluid distributing body, the partition plate divides the fluid distributing body into the first accommodating chamber and the second accommodating chamber, and the valve port is opened in the partition plate.

Optionally, the valve core assembly includes a blocking portion for blocking the valve port, and the blocking portion is disposed in the first cavity.

Optionally, the actuating assembly includes an actuating element and an elastic element, the valve core assembly includes a valve core rod movably penetrating through the valve body along the axial direction of the valve core assembly, the elastic element is connected between the valve body and the valve core rod to provide an elastic force for plugging the valve core rod in the valve port, and the actuating element acts on the valve core rod to enable the valve core rod to overcome the elastic force to gradually open the valve port, so as to change the through-flow cross-sectional area at the valve port.

Optionally, the actuating element is rotatably disposed on the valve body, an arc-shaped guide surface is disposed on a side of the actuating element facing the valve core rod, the arc-shaped guide surface has a first guide portion and a second guide portion with different heights, the first guide portion and the second guide portion are gradually transited through a smooth surface, a guide path is formed between the first guide portion and the second guide portion, and a top end of the valve core rod slidably abuts against the corresponding guide path to jointly form a cam transmission mechanism.

Optionally, the first guide portion comprises at least two, and the second guide portion comprises at least two.

Optionally, the arc-shaped guide surface comprises two first guide portions and two second guide portions, the two first guide portions and the two second guide portions are arranged at intervals to jointly form four guide paths, and each guide path is matched with one valve core rod.

Alternatively, the two first guide portions are symmetrical with respect to the center of the rotating shaft of the actuating member, and the two second guide portions are symmetrical with respect to the center of the rotating shaft of the actuating member.

Alternatively, projections of the two first guide portions and the two second guide portions in the axial direction are located on the same circumference.

Optionally, the valve body is provided with two inlets and two outlets, which are respectively an inlet a, an inlet C, an outlet B and an outlet D, the inlet a is respectively communicated with the outlet B and the outlet D to form a first internal flow passage and a second internal flow passage, and of the two valve core rods matched with the first internal flow passage and the second internal flow passage, when one of the valve core rods is matched with the first guide portion, the other valve core rod is matched with the second guide portion,

the inlet C is communicated with the outlet B and the outlet D respectively to form a third internal flow passage and a fourth internal flow passage, and in the two valve core rods matched with the third internal flow passage and the fourth internal flow passage, when one of the valve core rods is matched with the first guide part, the other valve core rod is matched with the second guide part.

Optionally, the inlet a and the outlet D are coaxially arranged, the outlet B and the inlet C are coaxially arranged, the inlet a and the outlet B are arranged in parallel, and the inlet a and the inlet C are formed on different side surfaces of the valve body.

Optionally, the valve core assembly includes a valve core rod movably disposed through the valve body along an axis direction of the valve core assembly, the valve body is provided with a step hole, a top end of the valve core rod penetrates through the step hole, and a sealing member is fixedly disposed in the step hole to seal the valve core rod and the valve body.

Optionally, the valve core assembly further includes a valve core cap and a valve core sleeve, the valve core rod is configured into a T-shaped structure formed by a shaft portion and a plugging portion, the shaft portion movably penetrates through the valve body, the valve core cap is fixedly disposed at one end of the shaft portion away from the plugging portion, the valve core cap is exposed out of the valve body, the elastic member is sleeved on the shaft portion, the elastic member abuts against between the valve core cap and the valve body, and the plugging portion is fixedly wrapped with the valve core sleeve so as to seal the plugging portion and the valve port.

Optionally, the reversing valve further comprises an actuator assembly, the actuator assembly comprises a locking structure and a power device, the power device is in transmission connection with the actuating assembly through the locking structure to drive the actuating assembly to move, and the locking structure is used for locking the actuating assembly in the state.

Through the technical scheme, under the action of the actuating assembly, the valve core assembly is plugged in the valve port or separated from the valve port, so that the communication and the cut-off of a certain internal flow passage are realized, the inlet and the outlet on the internal flow passage are cut off or completely communicated, and the function of switching the flow direction of liquid is realized. Alternatively, control of the valve core assembly by the actuating assembly causes a plurality of valve core assemblies to open corresponding valve port portions, thereby enabling the same inlet to communicate with a plurality of outlets simultaneously. Under the action of the valve core assembly, the flow cross-sectional area of the valve port is changed by controlling the opening size of the valve port, so that the flow at the valve port can be adjusted, and therefore, the flow of liquid flowing into the inlet can be distributed by changing the flow cross-sectional areas of different valve ports of the internal flow passage communicated with the same inlet. Therefore, the coolant output from the PTC heater can be distributed to the power battery pack and the heater core body by the reversing valve at required flow rates.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure, but do not constitute a limitation of the disclosure. In the drawings:

FIG. 1 is a schematic perspective view of an embodiment of a diverter valve according to the present disclosure;

FIG. 2 is a schematic partial perspective view of a diverter valve according to one embodiment of the present disclosure, with dashed arrows illustrating the flow of liquid from inlet A to outlet B and from inlet A to outlet B;

FIG. 3 is a schematic sectional view taken along line I-I in FIG. 2 and showing the flow of liquid from inlet A to outlet B by dashed arrows;

FIG. 4 is a schematic sectional view taken along line II-II in FIG. 2;

FIG. 5 is a schematic cross-sectional view of an embodiment of a reversing valve of the present disclosure;

FIG. 6 is a partially exploded schematic view of a diverter valve according to one embodiment of the present disclosure;

FIG. 7 is a schematic structural view of an actuator component of an embodiment of the reversing valve of the present disclosure;

FIG. 8 is a schematic structural view of a valve cartridge assembly of the reversing valve of one embodiment of the present disclosure;

FIG. 9 is a schematic view of a valve upper cover of the reversing valve of one embodiment of the present disclosure;

FIG. 10 is a schematic illustration of an actuator mount of an embodiment of the disclosed reversing valve;

fig. 11 is a structural schematic view of a lower valve cover of a reversing valve according to an embodiment of the present disclosure.

Description of the reference numerals

100-a reversing valve; 10-a valve body; 11-valve port; 12-a valve upper cover; 121-a stepped bore; 122-upper cover plugging bulge; 13-a valve lower cover; 131-lower cover plugging bulges; 14-a valve housing; 20-a spool assembly; 21-a valve core rod; 211-a shaft portion; 212-a blocking part; 22-a valve core cap; 23-a spool sleeve; 30-an actuation assembly; 31-an actuating member; 311-a rotating shaft; 32-an arcuate guide surface; 321-a first guide; 322-a second guide; 333-guide path; 34-a reference plane; 40-an internal flow channel; 41-a fluid partitioning body; 411 — a first chamber; 412-a second cavity; 413-a separator plate; 50-an elastic member; 60-an actuator assembly; 61-a power plant; 62-an actuator mount; 621-a rotating shaft support sleeve; 63-actuator cover plate; 71-sealing member.

Detailed Description

The following detailed description of the embodiments of the disclosure refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, where an orientation word such as "upper and lower" is used without a contrary explanation, reference may be made to the drawing direction as shown in fig. 4. "top" corresponds to the direction "up" shown in fig. 4, and "bottom" corresponds to the direction "down" shown in fig. 4. "inner and outer" refer to the inner and outer of the profile of the associated component. In addition, the terms "first", "second", and the like used in the embodiments of the present disclosure are intended to distinguish one element from another, and have no order or importance.

In order to provide for flow distribution of a liquid therethrough, as shown in fig. 1-11, a reversing valve 100 is provided in the present disclosure, the reversing valve 100 including a valve body 10, a valve core assembly 20, and an actuation assembly 30. The valve body 10 is formed with an inlet, at least two outlets, and an internal flow passage 40 communicating the same inlet with the plurality of outlets, i.e., the same inlet may communicate with the plurality of outlets. Each internal flow passage 40 has a valve port 11 formed therein that mates with the valve cartridge assembly 20. The valve ports 11 are matched with the valve core assembly 20 in a one-to-one correspondence manner, so that the communication or cut-off of the internal flow passages 40 where the valve ports 11 are located is controlled through the valve core assembly 20. The valve core assembly 20 is movably disposed on the valve body 10. The actuating assembly 30 is used to actuate the valve core assembly 20 such that the inlet is selectively in full communication with one of the outlets, or such that the inlet is simultaneously in communication with multiple outlet portions and flow distribution is achieved by adjusting the cross-sectional flow area at the corresponding valve port 11.

"full communication" in the present disclosure refers to communication with the valve port 11 fully open and with the maximum flow area at the valve port 11.

Through the above technical solution, under the action of the actuating assembly 30, the valve core assembly 20 is blocked at the valve port 11 or separated from the valve port 11, so as to realize communication and cut-off of a certain internal flow passage 40, so that an inlet and an outlet on the internal flow passage 40 are cut off or completely communicated, and a function of switching a liquid flow direction is realized. Alternatively, the control of the valve core assembly 20 by the actuating assembly 30 causes a plurality of valve core assemblies 20 to partially open corresponding valve ports 11, thereby enabling the same inlet to communicate with a plurality of outlets simultaneously. Under the action of the valve core assembly 20, the flow rate at the valve port 11 is adjusted by controlling the opening size of the valve port 11 and changing the flow cross-sectional area at the valve port 11, so that the liquid flowing into the same inlet can be distributed by changing the flow cross-sectional areas at different valve ports 11 of the internal flow channel 40 communicated with the same inlet. Therefore, the coolant output from the PTC heater can be distributed to the power battery pack and the heater core body at desired flow rates by using the switching valve 100.

While the reversing valve 100 is described in the present disclosure as being applied to a thermal management cooling cycle system of an automobile, it will be understood that the reversing valve 100 of the present disclosure can also be applied to other applications requiring fluid distribution or changing the flow direction of a fluid, such as a hydraulic system, an air conditioning system, a water circulation system, and the like.

In order to realize the communication or the interception of a certain internal flow channel 40, in an embodiment of the present disclosure, as shown in fig. 2 to 5, a corresponding fluid distributor 41 is formed on each internal flow channel 40, a first cavity 411 and a second cavity 412 are formed on each fluid distributor 41, the first cavity 411 is always communicated with an inlet on the internal flow channel 40 where the first cavity is located, the second cavity 412 is always communicated with an outlet on the internal flow channel 40 where the second cavity is located, and the first cavity 411 is communicated with the second cavity 412 through the valve port 11. Therefore, the valve core assembly 20 is controlled by the actuating assembly 30, the first receiving chamber 411 and the second receiving chamber 412 are closed or communicated by the valve core assembly 20 being blocked at the valve port 11 or separated from the valve port 11, and the corresponding inlet and outlet are closed or communicated, and the flow cross-sectional area at the valve port 11 is changed by controlling the opening size of the valve port 11, so as to adjust the flow rate at the valve port 11.

How to form the first cavity 411 and the second cavity 412 in the fluid distributing body 41 is not limited in the present disclosure, and may be provided as needed, and optionally, in an embodiment, as shown in fig. 3 to 5, a partition plate 413 is provided in the fluid distributing body 41, the partition plate 413 divides the fluid distributing body 41 into the first cavity 411 and the second cavity 412, and the valve port 11 is opened in the partition plate 413. Fluid distribution body 41 is configured substantially as a hollow cylindrical structure, and partition plate 413 is provided in the cylindrical structure so as to partition it into first and second containing

chambers

411 and 412. The valve port 11 is a through hole formed in the partition 413. Therefore, the first cavity 411 and the second cavity 412 can be closed or communicated by blocking or separating the valve port 11 through the valve core assembly 20.

Optionally, a side wall of the first cavity 411 is provided with a notch communicated with the inlet, and a side wall of the second cavity 412 is provided with a notch communicated with the outlet.

In other embodiments, a separation cylinder is disposed in the fluid distribution body 41 to separate the fluid distribution body 41 into a first cavity 411 and a second cavity 412, the cavity in the separation cylinder is the first cavity 411, the cavity between the separation cylinder and the inner wall of the fluid distribution body 41 is the second cavity 412, the first cavity 411 is always communicated with the inlet on the internal flow channel 40 where the first cavity is located, the second cavity 412 is always communicated with the outlet on the internal flow channel 40 where the second cavity is located, the valve port 11 is formed as an opening of the separation cylinder, and the first cavity 411 is communicated with the second cavity 412 through the valve port 11.

Alternatively, in order to make the valve core assembly 20 close and seal the valve port 11, in one embodiment, as shown in fig. 3 to 5 and 8, the valve core assembly 20 includes a sealing portion 212 for sealing and sealing the valve port 11, and the sealing portion 212 is disposed in the first cavity 411. The diameter of the blocking portion 212 is larger than that of the valve port 11. The first cavity 411 is always communicated with the inlet, and the blocking part 212 is pressed against the valve port 11 on the partition plate 413 under the pressure of the liquid flowing into the first cavity 411 from the inlet, so that the blocking part 212 and the valve port 11 can be matched more tightly and tightly, and the leakage is not easy to occur. When the water pressure is higher, the plugging part 212 on the valve core rod 21 is compressed and sealed, the pressure value of the inner leakage is greatly increased, and the requirement of the pressure difference in an automobile air conditioning system can be completely met.

In other embodiments, the elastic member 50 is connected between the valve body 10 and the valve core rod 21 to provide an elastic force for the valve core rod 21 to open the valve port 11, and the blocking portion 212 is located in the second cavity 412. The diameter of the blocking portion 212 is larger than that of the valve port 11. The second cavity 412 is communicated with the outlet, the first cavity 411 is always communicated with the inlet, and under the pressure of the liquid flowing into the first cavity 411 from the inlet, the pressure of the blocking part 212 far away from the valve port 11 on the partition plate 413 is provided, so that the elastic member 50 can be assisted to open the blocking part 212, the valve port 11 can still be normally opened when the elastic force of the elastic member 50 is insufficient, and the reliability of the reversing valve 100 is improved.

There is no limitation in the present disclosure on how the actuating assembly 30 moves the valve core assembly 20 as long as it can move the valve core assembly 20, for example, a linear power source (linear motor, hydraulic cylinder, pneumatic cylinder, etc.) may be provided at each valve core assembly 20 to drive each valve core assembly 20 to move.

Optionally, in one embodiment of the present disclosure, as shown in fig. 3 and 5, the actuating assembly 30 includes an actuating member 31 and an elastic member 50. The valve core assembly 20 includes a valve core rod 21 movably disposed through the valve body 10 along an axial direction thereof, an elastic member 50 is connected between the valve body 10 and the valve core rod 21 for providing an elastic force to seal the valve port 11 with the valve core rod 21, and the actuator 31 acts on the valve core rod 21 to enable the valve core rod 21 to overcome the elastic force to gradually open the valve port 11, so as to change a cross-sectional area of the valve port 11.

Taking the direction of the drawing in fig. 3 as an example, the valve core rod 21 is upward blocked at the valve port 11, and the valve core rod 21 is downward separated from the valve port 11. When the valve port 11 needs to be closed, the actuator 31 reduces or releases the acting force on the valve plug rod 21, and the valve plug rod 21 moves upward under the action of the elastic member 50, so that the blocking portion 212 blocks the valve port 11, thereby closing the valve port 11. When it is desired to open the valve port 11, the actuator 31 acts on the spool rod 21 to move the spool rod 21 away from the valve port 11 against the elastic force, so as to open the valve port 11. Further, the movement distance of the spool rod 21 can be controlled by the actuator 31, so that the spool rod 21 gradually overcomes the action force of the elastic member 50 to adjust the opening degree of the valve port 11, thereby changing the flow cross-sectional area at the valve port 11, and thus adjusting the flow rate in the corresponding internal flow passage 40.

The elastic member 50 may be a compression spring, or may be a common spring, an elastic rubber member, an elastic silicone member, a spring plate, or other elastic mechanism.

The existing electric water valve generally has the defects of large rotating torque, overlarge working current, broken rotating shaft 311 and the like. The reversing valve 100 in the present disclosure drives the four valve core rods 21 to move up and down through the actuator 31, and has the advantages of small friction, small required working current and long service life of the product.

The specific structure of the actuator 31 is not limited in the present disclosure as long as the actuator can actuate the valve core rod 21 to move, and optionally, in one embodiment, as shown in fig. 2 and fig. 4 to 7, the actuator 31 is rotatably disposed on the valve body 10, and one side of the actuator 31 facing the valve core rod 21 is provided with an arc-shaped guide surface 32. The arc-shaped guide surface 32 has a first guide portion 321 and a second guide portion 322 having different heights, and the first guide portion 321 and the second guide portion 322 are gradually transited by a smooth surface therebetween. A guide path 333 is formed between the first guide portion 321 and the second guide portion 322, and the top end of the valve core rod 21 slidably abuts against the corresponding guide path 333 to jointly constitute a cam transmission mechanism. When the first guide portion 321 abuts against the top end of the spool rod 21, the spool rod 21 overcomes the elastic force to open the valve port 11, and when the second guide portion 322 abuts against the top end of the spool rod 21, the spool rod 21 blocks the valve port 11 under the action of the elastic element 50. The top end of the spool rod 21 refers to an end of the spool rod 21 near the actuator 31. The arcuate guide surface 32 of the actuator member 31 is configured in a generally circular wave-like configuration. A rotating shaft 311 is protruded from a side of the actuator 31 facing the valve body 10, and the actuator 31 can rotate around the rotating shaft 311.

The first guide portion 321 and the second guide portion 322 protrude from the reference surface 34 of the actuator 31, and the "height" is a height protruding from the reference surface 34 of the actuator 31. The first guide portion 321 has a maximum height on the guide path 333, and the second guide portion 322 has a minimum height on the guide path 333.

When the actuator 31 rotates, the top end of the spool rod 21 slides along the guide path 333, and when the top end of the spool rod 21 abuts against the first guide portion 321, the distance between the blocking portion 212 on the spool rod 21 and the valve port 11 is the largest, the opening degree of the valve port 11 is the largest, the valve port 11 is in a fully opened state, the cross-sectional area of the through flow at the valve port 11 is the largest, and the corresponding inlet is fully communicated with the corresponding outlet. When the top end of the valve core rod 21 slides to the second guide portion 322 along the guide path 333, the blocking portion 212 on the valve core rod 21 blocks the valve port 11 under the action of the elastic member 50, and the valve port 11 is blocked. When the top end of the valve core rod 21 abuts against the guide path 333 between the first guide portion 321 and the second guide portion 322, the valve port 11 is partially opened, and the opening degree of the valve port 11 depends on the height of the guide path 333 which is abutted by the valve core rod 21. Since the first guide portion 321 and the second guide portion 322 are gradually transited by the smooth surface, when the actuator 31 rotates, the valve port 11 is gradually opened or closed, and accordingly, the opening degree of the valve port 11 is gradually changed, so that the flow rate passing through the valve port 11 is gradually changed, and thus, the flow rate in a certain internal flow passage 40 can be gradually changed, and the flow rate can be more accurately distributed.

Alternatively, in another embodiment, the actuator 31 is movably disposed on the valve body 10, the movement of the actuator 31 is realized by the engagement of a rack and pinion, and a bottom surface of the actuator 31 is provided with a slope guide surface, when the slope guide surface moves in the horizontal direction, the slope guide surface engages with the top end of the valve core rod 21 to push the valve core rod 21 to move, thereby controlling the opening and closing of the internal flow passage 40.

Optionally, the first guide portion 321 and the second guide portion 322 are in a transition form via a slope, so that the gradual change of the flow rate can be realized. In other embodiments, the first guide portion 321 and the second guide portion 322 may also transition through an arc-shaped surface therebetween.

The specific shape of the arc-shaped guide surface 32 is not limited in this disclosure, and may be set according to the moving distance and direction of the spool rod 21 to be actuated.

Optionally, the first guide portions 321 include at least two, and the second guide portions 322 include at least two, so that the at least two first guide portions 321 can respectively abut against the top end of the spool rod 21, so that the at least two spool rods 21 open the valve port 11 against the elastic force, thereby enabling the same inlet to be communicated with multiple outlets at the same time.

Alternatively, in an embodiment of the present disclosure, the arc-shaped guide surface 32 includes two first guide portions 321 and two second guide portions 322, the two first guide portions 321 and the two second guide portions 322 are spaced to jointly form four guide paths 333, and each guide path 333 is engaged with one valve core rod 21.

In the above embodiment, optionally, the two first guide portions 321 are symmetric with respect to the rotation shaft 311 of the actuator 31, and the two second guide portions 322 are symmetric with respect to the rotation shaft 311 of the actuator 31. By arranging the guide part in a central symmetry manner relative to the rotating shaft 311 of the actuator 31, the acting force of the valve core rod 21 on the actuator 31 can be balanced and is not easy to skew, the valve core rod 21 is not easy to deform, internal leakage is avoided, and the cooling or heating effect of the thermal management system is improved.

Alternatively, the projections of the two first guide portions 321 and the two second guide portions 322 in the axial direction are located on the same circumference. That is, the projections of the four guide paths 333 in the axial direction are located on the same circumference, so that the top of the spool rod 21 can always move along the guide paths 333 when the actuator 31 rotates along the rotary shaft 311.

Optionally, the four guides are spaced 90 ° apart two by two. This is so that when the actuator 31 is rotated 90 degrees, the spool rod 21 engaged with the first guide portion 321 is switched to be engaged with the second guide portion 322, and the spool rod 21 engaged with the second guide portion 322 is switched to be engaged with the first guide portion 321.

The number of the inlet and the outlet specifically provided on the valve body 10 is not limited in the present disclosure, and may be provided as needed, and optionally, in an embodiment of the present disclosure, as shown in fig. 2, two inlets and two outlets are formed on the valve body 10, and are respectively an inlet a, an inlet C, an outlet B, and an outlet D, the inlet a communicates with the outlet B and the outlet D and forms a first internal flow passage 40 and a second internal flow passage 40, and in the two valve core rods 21 that cooperate with the first internal flow passage 40 and the second internal flow passage 40, when one of the valve core rods 21 cooperates with the first guide portion 321, the other valve core rod 21 cooperates with the second guide portion 322, so that when the actuating member 31 rotates, the moving directions of the valve core rods 21 in different flow passages that communicate with the same inlet are different.

The inlet C is respectively communicated with the outlet B and the outlet D to form a third internal flow passage 40 and a fourth internal flow passage 40, and in the two valve core rods 21 matched with the third internal flow passage 40 and the fourth internal flow passage 40, when one valve core rod 21 is matched with the first guide part 321, the other valve core rod 21 is matched with the second guide part 322, and the moving directions of the valve core rods 21 in different flow passages communicated with the same inlet are different, so that when the actuating element 31 rotates, the moving directions of the valve core rods 21 in different flow passages communicated with the same inlet are different.

To explain the flow direction of the liquid flowing into the inlet a, it is assumed that in an initial state, the spool rod 21 in the first internal flow passage 40 is engaged with the first guide portion 321, and under the pressing of the first guide portion 321, the blocking portion 212 on the spool rod 21 is away from the valve port 11, at this time, the valve port 11 in the first internal flow passage 40 is completely opened, and the inlet a is completely communicated with the outlet B, and at the same time, the spool rod 21 in the second internal flow passage 40 is engaged with the second guide portion 322, and under the action of the elastic member 50, the blocking portion 212 on the spool rod 21 blocks the valve port 11 in the second internal flow passage 40, at this time, the second internal flow passage 40 is blocked, and the inlet a is blocked with the outlet D, so that at this time, the liquid flowing into the valve body 10 from the inlet a can all flow out of the outlet B.

When the actuator 31 rotates, the spool rod 21 slides along the guide path 333, the blocking portion 212 on the spool rod 21, which is engaged with the first internal flow passage 40, gradually approaches the valve port 11, the valve port 11 is gradually closed, the flow cross-sectional area of the valve port 11 is gradually reduced, and the flow rate through the valve port 11 is gradually reduced, so that the flow rate flowing out of the outlet B is gradually reduced; meanwhile, the blocking portion 212 of the spool rod 21, which is engaged with the second internal flow channel 40, is gradually away from the valve port 11, the valve port 11 is gradually opened, the cross-sectional area of the through flow at the valve port 11 is gradually increased, the flow rate flowing through the valve port 11 is gradually increased, so that the outlet D is gradually opened, and the flow rate flowing out of the outlet D is gradually increased, thereby achieving the desired flow rate distribution for the liquid flowing in from the inlet a when flowing out from the outlet B and the outlet D, respectively.

When the actuator 31 continues to rotate, the valve core rod 21 in the first internal flow passage 40 is engaged with the second guiding portion 322, and under the action of the elastic member 50, the blocking portion 212 on the valve core rod 21 blocks the valve port 11 in the first internal flow passage 40, at this time, the first internal flow passage 40 is blocked, and the inlet a and the outlet B are blocked; meanwhile, the spool rod 21 in the second internal flow passage 40 is matched with the first guide portion 321, and under the pushing of the first guide portion 321, the blocking portion 212 on the spool rod 21 is far away from the valve port 11, at this time, the valve port 11 in the second internal flow passage 40 is completely opened, and the inlet a is completely communicated with the outlet D, so that the switching of the liquid flow direction is realized, that is, the switching from the conduction between the inlet a and the outlet B to the conduction between the inlet a and the outlet D is realized.

It will be appreciated that the flow distribution of liquid into inlet C is similar in principle to that of inlet a and will not be described further herein.

The specific extending directions of the inlet and the outlet are not limited in the present disclosure, and can be set according to actual installation needs. Alternatively, in one embodiment, as shown in fig. 1 and 2, the inlet a and the outlet D are coaxially disposed, the outlet B and the inlet C are coaxially disposed, the inlet a and the outlet B are arranged in parallel, and the inlet a and the inlet C are formed on different sides of the valve body 10. Alternatively, the inlet a and the outlet B are formed on the same side of the valve body 10, and the inlet C and the outlet D are formed on the same side of the valve body 10. The connection of the directional valve 100 to the pipeline is facilitated by the arrangement of the parallel structure described above.

To prevent the liquid in the internal flow passage 40 from leaking from the valve stem 21, in one embodiment, as shown in fig. 5 and 9, the valve core assembly 20 includes a valve core rod 21 movably disposed through the valve body 10 along the axial direction thereof. The valve body 10 is provided with a stepped hole 121, the top end of the valve core rod 21 penetrates out of the stepped hole 121, and a sealing member 71 is fixedly arranged in the stepped hole 121 so as to seal between the valve core rod 21 and the valve body 10. The stepped bore 121 guides the movement of the spool rod 21. The stepped hole 121 is provided at the top of the valve body 10. Alternatively, the seal 71 may be a gasket.

Compared with the ball valve used in the prior art, the ball valve switches the flow direction of liquid by rotating the spherical valve core in the valve body 10, the valve core and the valve body 10 need to be sealed by the rubber sealing element 71 with a large area, and because the contact area between the spherical valve core and the valve body 10 is large, the wear phenomenon is easy to occur when sliding friction is carried out for a long time, and leakage is easy to occur after long-term use. In the present disclosure, since the valve core rod 21 is slidably disposed on the valve body 10 along the linear direction, the sealing of the matching position between the valve core rod 21 and the valve body 10 can be achieved only by sealing the position where the valve core rod 21 penetrates through the valve body 10, the contact area between the valve core rod 21 and the sealing member 71 is small, so that the friction force between the two can be reduced, the abrasion is reduced, the leakage caused by the abrasion of the sealing member 71 is reduced, the inner leakage is not generated, and the cooling or heating effect of the thermal management system is improved.

The specific structure of the valve core assembly 20 is not limited in the present disclosure as long as the valve core rod 21 can be pushed to move, and in one embodiment, as shown in fig. 5 and 8, the valve core assembly 20 further includes a valve core cap 22 and a valve core sleeve 23, and the valve core rod 21 is configured into a T-shaped structure formed by a shaft rod portion 211 and a blocking portion 212. The shaft part 211 is movably disposed through the valve body 10, and the valve core cap 22 is fixedly disposed at an end of the shaft part 211 away from the blocking part 212. The valve core cap 22 is exposed from the valve body 10, the elastic member 50 is sleeved on the shaft portion 211, and the elastic member 50 abuts against between the valve core cap 22 and the valve body 10 to apply an elastic force to the valve core rod 21, so that the blocking portion 212 can block the valve port 11. The plug part 212 is fixedly covered with a valve core sleeve 23 to seal the plug part 212 and the valve port 11. The spool case 23 may be made of an elastic material such as a rubber material. The valve core cap 22 may be threadably engaged with the top end of the shaft portion 211.

Alternatively, the outer peripheral surface of the valve core sleeve 23 may be configured as a conical surface structure, so that when the blocking portion 212 blocks the valve port 11, the valve port 11 can be blocked more tightly by the conical surface structure in cooperation with the valve port 11. The valve core cap 22 is of a hemispherical configuration to facilitate sliding movement of the valve core cap 22 over the arcuate guide surface 32.

Alternatively, in other embodiments, the valve core cap 22 may also be a roller, or the like with a fixed seat, and the fixed seat is connected with the shaft portion 211, and the roller, or the like rolls on the arc-shaped guide surface 32, so as to reduce the friction force therebetween.

To drive the movement of the actuation assembly 30, in the present disclosure, as shown in FIG. 5, the reversing valve 100 further includes an actuator assembly 60. Actuator assembly 60 includes a locking structure and a power device 61, wherein power device 61 is in driving connection with actuating assembly 30 through the locking structure to drive actuating assembly 30 to move, and the locking structure is used for locking actuating assembly 30 in a state. The power device 61 may include a stepping motor, and the locking structure may be a worm and gear structure, and self-locking is performed by a self-locking characteristic of the worm and gear.

By providing the actuator assembly 60, when the flow rate needs to be distributed, the actuator 31 can be locked at a certain angle by using the locking structure, so that the corresponding valve core rod 21 is in the corresponding open state. Alternatively, the valve port 11 is maintained in a fully opened or closed state by locking the spool rod 21 in engagement with the first guide portion 321 or the second guide portion 322 by the locking structure.

Alternatively, as shown in fig. 5, the valve body 10 includes an upper valve cover 12, a valve housing 14, and a lower valve cover 13. The internal flow passage 40 is formed in the valve housing 14, and both ends of the fluid distributing body 41 are opened, and the valve upper cover 12 and the valve lower cover 13 respectively cover the openings of both ends of the fluid distributing body 41. The valve core assembly 20 is slidably disposed through the valve upper cover 12, the valve upper cover 12 is provided with the above-mentioned stepped hole 121, and the sealing member 71 is fixedly disposed in the stepped hole 121 to seal between the valve core assembly 20 and the valve upper cover 12. As shown in fig. 9, the valve upper cover 12 is provided with a plurality of upper cover sealing protrusions 122, the upper cover sealing protrusions 122 are matched with the fluid distributing body 41 in a one-to-one correspondence manner, that is, the upper cover sealing protrusions 122 and the lower cover sealing protrusions 131 are respectively sealed at two ends of the fluid distributing body 41. The upper cap sealing projections 122 are each provided with a valve housing 14 sealing ring for sealing the upper cap sealing projections 122 with the fluid dispensing body 41 against leakage.

In one embodiment, in order to ensure the sealing performance between the lower valve cover 13 and the valve housing 14, as shown in fig. 11, a plurality of lower cover sealing protrusions 131 are provided on the lower valve cover 13, the lower cover sealing protrusions 131 are engaged with the fluid distributing body 41 in a one-to-one correspondence, and a sealing ring of the valve housing 14 is provided on each of the lower cover sealing protrusions 131 to seal the lower cover sealing protrusion 131 and the fluid distributing body 41 to prevent leakage. Optionally, the lower bonnet is further provided with a plurality of circular groove protrusions for cooperating with grooves on the valve housing 14 to position and fix the valve housing 14. The valve housing 14 is further provided with a plurality of threaded posts for fixedly connecting with the lower valve cover 13 and the upper valve cover 12.

The actuator assembly 60 further includes an actuator mount 62 for receiving the locking structure and the power unit 61, the actuator mount 62 being open above the cavity and being closed by an actuator cover 63. The bottom of the actuator mount 62 is provided with four circular holes for fixing the valve housing 14 and the valve upper cover 12 by screws. As shown in fig. 5, the actuator mounting seat 62 is further provided with four circular grooves protruding upward at the bottom, and the elastic element 50 is inserted into the valve upper cover 12 and the circular grooves, so as to limit and guide the elastic element 50.

A rotating shaft supporting sleeve 621 is arranged in the middle of the actuator mounting seat 62 and used for positioning when the actuating piece 31 rotates, and the rotating shaft 311 of the actuating piece 31 is inserted into the rotating shaft supporting sleeve 621. And a screw column is arranged on the actuator mounting seat 62 and used for fixing the valve upper cover 12. The actuator mount 62 is externally provided with four mounts for securement of the entire reversing valve 100. The four mounting points can be directly fixed on the automobile beam, or the reversing valve 100 can be firstly mounted on the iron plate and then the iron plate is fixed on the automobile, so that the installation is convenient and firm.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A reversing valve, characterized by comprising a valve body (10), a valve core assembly (20) and an actuating assembly (30), wherein an inlet, at least two outlets and an internal flow channel (40) communicating the same inlet with the outlets are formed on the valve body (10), a valve port (11) matched with the valve core assembly (20) is formed on each internal flow channel (40), the valve ports (11) correspond to the valve core assemblies (20) in a one-to-one manner, the valve core assemblies (20) are movably arranged on the valve body (10), and the actuating assembly (30) is used for actuating the valve core assembly (20) to enable the inlet to be selectively and completely communicated with one of the outlets, or simultaneously and partially communicated with the outlets and realize flow distribution by adjusting the through-flow cross-sectional areas at the corresponding valve ports (11);

the actuating assembly (30) comprises an actuating element (31) and an elastic element (50), the valve core assembly (20) comprises a valve core rod (21) movably arranged in the valve body (10) along the axis direction, the elastic element (50) is connected between the valve body (10) and the valve core rod (21) to provide an elastic force for enabling the valve core rod (21) to be blocked on the valve port (11), and the actuating element (31) acts on the valve core rod (21) to enable the valve core rod (21) to gradually open the valve port (11) against the elastic force, so that the through-flow sectional area at the valve port (11) is changed;

the actuating piece (31) is rotatably arranged on the valve body (10), one side of the actuating piece (31) facing the valve core rod (21) is provided with an arc-shaped guide surface (32), the arc-shaped guide surface (32) is provided with a first guide part (321) and a second guide part (322) which are different in height, the first guide part (321) and the second guide part (322) are gradually transited through a smooth surface, a guide path (333) is formed between the first guide part (321) and the second guide part (322), the top end of the valve core rod (21) can be slidably abutted against the corresponding guide path (333) to jointly form a cam transmission mechanism, when the first guide part (321) is abutted against the top end of the valve core rod (21), the valve core rod (21) overcomes the elastic force to open the valve port (11), and when the second guide part (322) is abutted against the top end of the valve core rod (21), the valve core rod (21) is blocked at the valve port (11) under the action of the elastic piece (50);

the arc-shaped guide surface (32) comprises two first guide parts (321) and two second guide parts (322), the two first guide parts (321) and the two second guide parts (322) are arranged at intervals to form four guide paths (333), and each guide path (333) is matched with one valve core rod (21);

the valve body (10) is provided with two inlets and two outlets which are respectively an inlet A, an inlet C, an outlet B and an outlet D, the inlet A is respectively communicated with the outlet B and the outlet D to form a first internal flow passage (40) and a second internal flow passage (40), and in the two valve core rods (21) matched with the first internal flow passage (40) and the second internal flow passage (40), when one of the valve core rods (21) is matched with the first guide part (321), the other valve core rod (21) is matched with the second guide part (322),

the inlet C is communicated with the outlet B and the outlet D respectively to form a third internal flow passage (40) and a fourth internal flow passage (40), and in the two valve core rods (21) matched with the third internal flow passage (40) and the fourth internal flow passage (40), when one of the valve core rods (21) is matched with the first guide part (321), the other valve core rod (21) is matched with the second guide part (322).

2. The reversing valve according to claim 1, wherein each of the internal flow passages (40) is formed with a corresponding fluid distributing body (41), each of the fluid distributing bodies (41) is formed with a first cavity (411) and a second cavity (412), the first cavity (411) is always communicated with the inlet of the internal flow passage (40) where the first cavity is located, the second cavity (412) is always communicated with the outlet of the internal flow passage (40) where the second cavity is located, and the first cavity (411) is communicated with the second cavity (412) through the valve port (11).

3. A reversing valve according to claim 2, characterized in that a partition plate (413) is arranged in the fluid distributing body (41), the partition plate (413) divides the fluid distributing body (41) into the first chamber (411) and the second chamber (412), and the valve port (11) opens into the partition plate (413).

4. The reversing valve according to claim 2, wherein the valve core assembly (20) comprises a blocking portion (212) for blocking the valve port (11), the blocking portion (212) being disposed in the first volume (411).

5. The reversing valve according to claim 1, wherein the first guide portion (321) comprises at least two and the second guide portion (322) comprises at least two.

6. A reversing valve according to claim 1, characterized in that the two first guide portions (321) are centrosymmetric with respect to the rotational axis (311) of the actuating member (31) and the two second guide portions (322) are centrosymmetric with respect to the rotational axis (311) of the actuating member (31).

7. The reversing valve according to claim 1, wherein projections of the two first guide portions (321) and the two second guide portions (322) in the axial direction are located on the same circumference.

8. Reversing valve according to claim 1, characterized in that the inlet a and the outlet D are coaxially arranged, the outlet B and the inlet C are coaxially arranged, the inlet a and the outlet B are arranged in parallel, the inlet a and the inlet C are formed on different sides of the valve body (10).

9. The reversing valve according to any one of claims 1 to 8, wherein the valve core assembly (20) comprises a valve core rod (21) movably arranged through the valve body (10) along the direction of the axis of the valve core assembly, the valve body (10) is provided with a stepped hole (121), the top end of the valve core rod (21) penetrates out of the stepped hole (121), and a sealing member (71) is fixedly arranged in the stepped hole (121) so as to seal between the valve core rod (21) and the valve body (10).

10. The reversing valve according to any of claims 1-8, the valve core assembly also comprises a valve core cap (22) and a valve core sleeve (23), the valve core rod (21) is configured into a T-shaped structure formed by a shaft rod part (211) and a blocking part (212), the shaft rod part (211) is movably arranged in the valve body (10) in a penetrating way, the valve core cap (22) is fixedly arranged at one end of the shaft rod part (211) far away from the plugging part (212), the valve core cap (22) is exposed out of the valve body (10), the elastic piece (50) is sleeved on the shaft rod part (211), the elastic piece (50) is propped against between the valve core cap (22) and the valve body (10), the valve core sleeve (23) is fixedly wrapped on the blocking part (212) so as to seal the blocking part (212) and the valve port (11).

11. The reversing valve according to any of claims 1-8, wherein the reversing valve (100) further comprises an actuator assembly (60), the actuator assembly (60) comprising a locking structure and a power device, the power device being in driving connection with the actuating assembly (30) through the locking structure to drive the actuating assembly (30) to move, the locking structure being configured to lock the actuating assembly (30) in a state.