WO2022012692A1 - 换向阀 - Google Patents

换向阀 Download PDF

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Publication number
WO2022012692A1
WO2022012692A1 PCT/CN2021/107193 CN2021107193W WO2022012692A1 WO 2022012692 A1 WO2022012692 A1 WO 2022012692A1 CN 2021107193 W CN2021107193 W CN 2021107193W WO 2022012692 A1 WO2022012692 A1 WO 2022012692A1
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WO
WIPO (PCT)
Prior art keywords
chamber
reversing valve
groove
plate
arc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/107193
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English (en)
French (fr)
Inventor
韩润虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Dunan Artificial Environment Co Ltd
Original Assignee
Zhejiang Dunan Artificial Environment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202021432675.0U external-priority patent/CN213271135U/zh
Priority claimed from CN202021432463.2U external-priority patent/CN213271134U/zh
Priority claimed from CN202010700914.4A external-priority patent/CN113944782B/zh
Application filed by Zhejiang Dunan Artificial Environment Co Ltd filed Critical Zhejiang Dunan Artificial Environment Co Ltd
Publication of WO2022012692A1 publication Critical patent/WO2022012692A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/12—Characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16—Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means

Definitions

  • the present application relates to the technical field of reversing valve equipment, in particular, to a reversing valve.
  • the four-way reversing valve is a common reversing valve for heat pump air conditioners. By changing the exhaust and return flow directions of the compressor, it can achieve cooling in summer and heating in winter.
  • the main purpose of the present application is to provide a reversing valve to solve the problem that the reversing valve using pneumatic drive in the prior art is not sensitive enough for reversing.
  • the present application provides a reversing valve, which includes a valve body and a valve core rotatably installed inside the valve body, the valve body is provided with a plurality of passages, and the rotating valve core can selectively make multiple At least two of the passages are in communication, the inside of the valve body is provided with a first chamber and a second chamber that are separated from each other, and the plurality of passages are all communicated with the second chamber.
  • the reversing valve further comprises: a cavity partition, a cavity partition
  • the driving part is arranged in the first chamber and is fixedly connected with the valve body to separate the control chamber in the first chamber; the driving part is arranged in the control chamber and is fixedly connected with the valve core, and the driving part is based on the pressure difference in the control chamber. Drive the valve core to rotate.
  • the driving part includes a driving plate, the driving plate is fixed on the end of the valve core, the driving plate is rotatably arranged in the control chamber, and divides the control chamber into a first pressure chamber and a second pressure chamber, and the rotation of the driving plate
  • the shaft is coaxial with the valve core.
  • the valve body is further provided with at least two control passages, and the at least two control passages communicate with the first pressure chamber and the second pressure chamber respectively.
  • the valve core further comprises: a middle partition plate, which is perpendicular to the axis of the valve body and is matched with the inner wall of the valve body, so as to divide the inside of the valve body into the first chamber and the second chamber.
  • a middle partition plate which is perpendicular to the axis of the valve body and is matched with the inner wall of the valve body, so as to divide the inside of the valve body into the first chamber and the second chamber.
  • the cavity partition is fixed on the inner end wall of the valve body on the side close to the driving plate, and abuts against the middle partition plate, so as to separate the control cavity in the first cavity.
  • the cavity partition is fixed on the inner side wall of the valve body on the side close to the first chamber, and abuts against the middle partition plate and the inner end wall of the valve body on the side close to the driving plate, so as to be in the first cavity
  • the control chamber is divided in the middle.
  • the cavity partition includes a partition, and the partition is bent at a predetermined angle along a direction parallel to the axis of the valve core to form the first plate segment and the second plate segment.
  • the first plate segment is provided with a first lug structure
  • the second plate segment is provided with a second lug structure
  • the diaphragm is connected to the inner end of the valve body through the first lug structure and the second lug structure on the wall or on the inner side wall.
  • the cavity partition further includes a first sealing ring, a first groove is provided on the circumferential edge of the partition plate, and the first sealing ring is sleeved in the first groove.
  • the reversing valve further includes a second sealing ring, the peripheral edge of the driving plate is provided with a second groove, and the second sealing ring is sleeved in the second groove.
  • the valve body includes a main body and a first end cover and a second end cover installed at both ends of the main body, the top of the drive plate is provided with a pivoting convex column, the pivoting convex column is coaxial with the valve core, and the pivoting convex column pivots attached to the first end cap.
  • the cavity partition further includes a plurality of limit posts, and the plurality of limit posts are respectively disposed on the side of the first plate segment close to the control cavity and the side of the second plate segment close to the control cavity.
  • the limiting column is a rubber column.
  • the cavity partition includes a spacer block, the spacer block is a fan-shaped block, fills the first chamber, and forms a control cavity in the first chamber, and the end of the spacer block forms a first surface and a second surface
  • the end of the driving part is pivotally connected to the end wall of the first chamber, and the reversing valve further comprises: a friction reducing part, which is installed between the end of the driving part and the first chamber, and which reduces friction
  • a shielding part is arranged between the anti-friction part and the control cavity to prevent the air between the anti-friction part and the control cavity.
  • the valve body includes a main body and a first end cover and a second end cover installed at both ends of the main body, the top of the driving part is provided with a pivoting convex column, the pivoting convex column is coaxial with the valve core, and the pivoting convex column pivots
  • the anti-friction part includes a bearing, the inner wall of the first end cover is provided with an installation groove, the bearing is fixed in the installation groove, and the pivoting convex column is penetrated in the bearing.
  • the shielding part includes a cover plate, the inner wall of the first end cover is provided with a countersunk groove, the installation groove is provided on the end wall of the countersunk groove, the cover plate is installed in the countersunk groove, and the mounting groove is covered,
  • the outer wall of the cover plate is on the same plane as the inner wall of the first end cap.
  • the driving part divides the control cavity into two pressure cavities, and a sealing part is provided between the end of at least one end of the driving part and the inner wall of the control cavity to prevent air leakage between the two pressure cavities; the two pressure cavities are respectively are the first pressure chamber and the second pressure chamber.
  • the reversing valve further comprises: an arc-shaped limit groove, the arc-shaped limit groove is arranged on the inner end wall of the valve body, and the central axis of the circle where the arc-shaped limit groove is located coincides with the rotation axis of the valve core;
  • the limiting portion is fixed on the end of the valve core, and the bottom end of the limiting portion is located in the arc-shaped limiting groove and can move in the arc-shaped limiting groove.
  • At least one end of the arc-shaped limiting slot is provided with a locking portion, and when the limiting portion moves to the end where the locking portion of the arc-shaped limiting slot is located, the locking portion cooperates with the limiting portion to lock the valve core .
  • the locking portion includes a locking hole
  • the locking hole is formed at the bottom of the arc-shaped limiting groove
  • the limiting portion includes an elastic limiting member
  • the elastic limiting member has a guiding state compressed by the groove bottom of the arc-shaped limiting groove, and the locked state extending into the locking hole.
  • the elastic limiting member includes: a cylinder, an installation cavity is provided inside the cylinder, and an escape hole is provided on the inner wall of the first end of the cylinder; a ball, the ball is installed in the installation cavity, and the elastic limiting member is locked when the elastic limiting member is locked Under the condition of the state, the ball abuts in the locking hole through the escape hole; for the elastic piece, the first end of the elastic piece abuts on the ball, and the second end of the elastic piece abuts on the inner wall of the second end of the cylinder.
  • both ends of the arc-shaped limiting slot are provided with locking portions.
  • the column body includes a first sleeve and a second sleeve, the first sleeve is sleeved outside the second sleeve, and the installation cavity is formed between the first sleeve and the second sleeve.
  • an internal thread is provided inside the first sleeve
  • an external thread is provided on the outside of the second sleeve
  • the first sleeve and the second sleeve are connected together by the internal thread and the external thread.
  • the arc-shaped limiting groove is a groove machined on the end wall of the valve body.
  • the reversing valve further comprises a first arc-shaped plate and a second arc-shaped plate, the first arc-shaped plate and the second arc-shaped plate are both installed on the inner end wall of the valve body, and the first arc-shaped plate and the second arc-shaped plate
  • the arc-shaped plates are arranged at intervals to form arc-shaped limiting grooves.
  • the reversing valve further includes a guide wheel, the guide wheel is rotatably sleeved on the outside of the first sleeve, and the guide wheel is coaxial with the first sleeve.
  • the valve body of the reversing valve of the present application has a first chamber and a second chamber inside, wherein the second chamber is used to cooperate with the valve core to realize communication between two of the multiple passages,
  • the first chamber is divided into a control chamber by a chamber partition, and a drive is fixed at the end of the valve core
  • the driving part can rotate through the pressure difference inside the control chamber, and then drive the valve core to rotate, realize the switching of the reversing valve, and respond more sensitively to the pressure, avoiding the insufficient reversing of the existing pneumatically driven reversing valve. sensitive question.
  • FIG. 1 schematically shows a cross-sectional view of an embodiment of the reversing valve of the present application
  • FIG. 2 schematically shows a structural diagram of an embodiment of the interior of the first chamber of the reversing valve of the present application
  • FIG. 3 schematically shows a structural diagram of an embodiment of the first end cap and the cavity partition of the present application
  • FIG. 4 schematically shows a structural diagram of an embodiment of the driving board of the present application
  • FIG. 5 schematically shows a structural diagram of an embodiment of the valve core and the drive plate of the present application
  • FIG. 6 schematically shows a cross-sectional view of an embodiment of a valve core and a drive plate of the present application
  • FIG. 7 schematically shows an exploded view of an embodiment of the reversing valve of the present application.
  • FIG. 8 schematically shows a pipeline control diagram of an embodiment of the first chamber of the present application.
  • FIG. 9 schematically shows a cross-sectional view of the first end cover, the driving plate and the anti-friction part between the two of the reversing valve of the present application;
  • Fig. 10 schematically shows the structure diagram of the existing reversing valve system
  • FIG. 11 schematically shows a structural diagram of an embodiment of the inner side of the valve body end wall with an arc-shaped limiting groove
  • Figure 12 schematically shows a cross-sectional view of an embodiment of a valve body end wall with an arc-shaped limiting groove
  • FIG. 13 schematically shows an internal structure diagram of an embodiment of a stopper.
  • valve body 11, passageway; 12, first pressure chamber; 13, second pressure chamber; 14, first chamber; 15, second chamber; 16, control channel; 17, antifriction part; 18, Blocking part; 191, arc limit groove; 192, locking part; 1921, locking hole; 20, valve core; 30, driving plate; 31, second groove; 311, second sealing ring; 32, pivot protrusion Column; 40, middle partition plate; 50, cavity partition; 51, first plate segment; 52, second plate segment; 53, first lug structure; 54, second lug structure; 55, first groove ; 60, the first end cover; 61, the second end cover; 62, the body; 70, the limit post; 80, the four-way valve pilot valve; 90, the passage; 100, the limit part; 101, the ball; 102, the elasticity 103, the first sleeve; 104, the second sleeve.
  • the four-way reversing valve is a common reversing valve for heat pump air conditioners. By changing the exhaust and return flow directions of the compressor, cooling in summer and heating in winter are realized.
  • most of the piston-type four-way reversing valves use pneumatics to control the pistons, which leads to the fact that they must rely on the gas pressure of the air conditioner to work.
  • the current pneumatic driving method is not sensitive enough, which affects the accuracy of the reversing valve.
  • an embodiment of the present application provides a reversing valve, including a valve body 10 and a valve core 20 rotatably installed inside the valve body 10 , and the valve body 10 is provided with a plurality of passages 11.
  • the rotary valve core 20 can selectively connect at least two of the plurality of passages 11.
  • the valve body 10 is provided with a first chamber 14 and a second chamber 15 that are separated from each other, and the plurality of passages 11 are In communication with the second chamber 15 , the reversing valve further includes: a chamber partition 50 , which is arranged in the first chamber 14 and is fixedly connected with the valve body 10 to separate a control chamber in the first chamber 14 ; Drive part, the drive part is arranged in the control chamber and is fixedly connected with the valve core 20, and the drive part drives the valve core 20 to rotate according to the pressure difference in the control chamber.
  • the valve body of the reversing valve of the present application has a first chamber and a second chamber, wherein the second chamber is used to cooperate with the valve core to realize the communication between two of the multiple passages, in order to realize the rotation switching of the valve core , to achieve the purpose of selectively connecting at least two of the multiple passages, the first chamber is separated from the control chamber by the chamber partition, and a driving part is fixed at the end of the valve core, and the driving part can pass through
  • the pressure difference inside the control chamber realizes rotation, which in turn drives the valve core to rotate, realizes the switching of the reversing valve, and has a more sensitive response to pressure, avoiding the problem that the existing pneumatically driven reversing valve is not sensitive enough to change direction.
  • the driving part includes a driving plate 30 , the driving plate is fixed on the end of the valve core, the driving plate 30 is rotatably arranged in the control chamber, and divides the control chamber into the first pressure chamber 12 and the second pressure chamber 13 , the rotation axis of the drive plate 30 is coaxial with the valve core 20 .
  • the control chamber is divided into a first pressure chamber and a second pressure chamber, and the fluid is connected to the first pressure chamber and the second pressure chamber to generate relative high pressure and low pressure respectively in the first pressure chamber and the second pressure chamber, Then, the driving plate is pushed to rotate, and the valve core is driven to rotate, so as to realize the reversing function, because the volumes of the first pressure chamber and the second pressure chamber are small. Therefore, after the fluid is introduced into the first pressure chamber and the second pressure chamber, the response to the pressure is more sensitive, and the problem that the existing pneumatically driven reversing valve is not sensitive enough to change direction is avoided.
  • the fluid introduced into the first pressure chamber and the second pressure chamber may be hydraulic oil or gas.
  • the first pressure chamber and the second pressure chamber are The two fan-shaped areas enclosed by the valve body, the cavity partition and the drive plate.
  • the first pressure chamber and the second pressure chamber are respectively connected with the E pipe and C pipe of the four-way valve pilot valve, and the D pipe and S pipe of the four-way valve pilot valve 80 are respectively connected with the exhaust pipe and the suction pipe of the air-conditioning compressor.
  • the pressure the exhaust pressure and the suction pressure of the air conditioning system can be used.
  • the valve body 10 in this embodiment is further provided with at least two control passages 16 , and the at least two control passages 16 communicate with the first pressure chamber 12 and the second pressure chamber 13 respectively.
  • the fluid is connected to the control channel 16 communicating with the first pressure chamber and the second pressure chamber, and relatively high pressure and low pressure are respectively generated in the first pressure chamber and the second pressure chamber, thereby driving the driving plate to rotate, and driving the valve core to rotate , to realize the commutation function,
  • the valve core 20 includes a middle partition plate 40, a lower partition plate, and a partition plate arranged between the middle partition plate 40 and the lower partition plate, and the partition plate separates the second chamber 15 of the valve body into non-communicating parts Two chambers, at least one of the two chambers can communicate with the two passages simultaneously.
  • the separator 40 in the reversing valve in this embodiment is perpendicular to the axis of the valve body 10 , and is matched with the inner wall of the valve body 10 to divide the inside of the valve body 10 into a first chamber 14 and a second chamber 15 , wherein the valve body 10 includes a main body and a first end cover installed at both ends of the main body 62 60 and second end cap 61.
  • the cavity partition 50 in this embodiment is fixed on the inner end wall of the valve body 10 on the side close to the driving plate 30 , that is, the first end cover 60 , and abuts against The middle partition 40 is used to separate the control chamber in the first chamber 14 .
  • the cavity partition 50 is fixed on the inner side wall of the valve body 10 and abuts against the middle partition plate 40 and the inner end wall of the first end cover 60 of the valve body 10 , so as to separate the control in the first cavity 14 cavity.
  • the cavity partition 50 in this embodiment includes a partition plate, and the partition plate is bent at a predetermined angle along a direction parallel to the axis of the valve core 20 to form a first plate segment 51 and a second plate segment 52 .
  • the preset angle is between 150° and 100°, preferably 120°, so that the drive plate has a sufficient swing angle to realize the operation of the valve core.
  • the swing angle of the drive plate is 90°.
  • the baffles may not be bent.
  • the separator can be a metal plate or a non-metal plate.
  • the cavity partition includes a spacer block, the spacer block is a fan-shaped block, fills the first chamber, and forms a control cavity in the first chamber, and the end of the spacer block forms the first surface and the second surface .
  • the angle between the first surface and the second surface is between 150° and 100°, preferably 120°, so that the driving plate has a sufficient swing angle to realize the operation of the valve core.
  • the driving The swing angle of the plate is 90°.
  • the first plate segment 51 is provided with a first lug structure 53
  • the second plate segment 52 is provided with a second lug structure 54.
  • the diaphragm passes through
  • the first lug structure 53 and the second lug structure 54 are connected on the inner end wall or the inner side wall of the valve body 10 .
  • the lug structure is provided with a connecting hole inside, through which a screw can be inserted, and is fixed on the valve body by the screw and the lug structure.
  • a rivet can also be used to connect through the lug structure.
  • the connection stability is further ensured by gluing or welding between the lugs and the inner end wall of the valve body.
  • the cavity partition 50 in this embodiment further includes a first sealing ring, a first groove 55 is provided on the circumferential edge of the partition plate, and the first sealing ring is sleeved in the first groove 55 .
  • the cross section of the first groove groove is square, and can also be wedge-shaped, V-shaped, circular, and so on.
  • the rubber O-ring is the first choice for the sealing ring. The size and size must meet the requirements of installing on the partition plate, with a certain pre-tightening force, so that it will not fall off. It can also be a sealing ring of other materials and other cross-sectional shapes.
  • the reversing valve in this embodiment further includes a second sealing ring, and the peripheral edge of the driving plate 30 is provided with a second groove 31, Two sealing rings are sleeved in the second groove.
  • the cross section of the second groove groove is square, and may also be wedge-shaped, V-shaped, circular, and the like.
  • the rubber O-ring is the first choice for the sealing ring. The size and size must meet the requirements of being installed on the drive plate and have a certain pre-tightening force, so that it will not fall off. It can also be a sealing ring of other materials and other cross-sectional shapes.
  • the valve body 10 in this embodiment includes a main body and a first end cover 60 and a second end cover installed at both ends of the main body.
  • the top of the driving plate 30 is provided with a pivoting protruding column 32 , which is connected to the valve core 20 .
  • the pivoting post is pivotally connected to the first end cap 60 .
  • the cavity partition 50 in this embodiment further includes a plurality of limit posts 70 , and the plurality of limit posts 70 are respectively disposed on the side of the first plate segment 51 close to the control cavity And the side of the second plate segment 52 close to the control cavity, the movement of the drive plate is limited by the limit column, thereby preventing the collision between the drive plate and the partition plate.
  • the limiting column in this embodiment is a rubber column.
  • the reversing valve also includes an anti-friction part 17, which is installed between the end of the driving part and the first chamber, and a shielding part 18 is provided between the anti-friction part 17 and the control cavity to prevent the anti-friction part 17
  • a shielding part 18 is provided between the anti-friction part 17 and the control cavity to prevent the anti-friction part 17
  • the valve body of the reversing valve of the present application has a first chamber and a second chamber, wherein the second chamber is used to cooperate with the valve core to realize the communication between two of the multiple passages, in order to realize the rotation switching of the valve core , to achieve the purpose of selectively connecting at least two of the multiple passages, the first chamber is divided into a control chamber, and a driving part is fixed at the end of the valve core, and the driving part can pass the pressure inside the control chamber.
  • the difference realizes rotation, which in turn drives the spool to rotate, realizes the switching of the reversing valve, and has a more sensitive response to pressure.
  • the rotation is smoother, and through the shielding effect of the shielding part, the air between the anti-friction part and the control cavity is prevented, which effectively avoids the problem that the existing pneumatically driven reversing valve is not sensitive enough to change direction.
  • the driving part and the valve core can also be fixed by welding, bonding, tenon and groove, etc., and the fixing method is not limited.
  • the staff when installing, should put the valve core into the body, and then cover the two ends of the body through the first end cap and the second end cap.
  • the connection between the first end cap and the body can be
  • the outer thread can also be processed in the circumferential direction of the first end cover, and the inner thread can be processed at the inner end of the body, and connected by screwing;
  • the connection method between the second end cover and the body can be screw connection, It is also possible to process external threads in the circumferential direction of the second end cover, process internal threads on the inner end of the body, and connect by screwing.
  • the anti-friction part 17 in this embodiment includes a bearing, the inner wall of the first end cover 60 is provided with a mounting groove, and the bearing is fixed in the mounting groove and pivots
  • the protruding post 32 passes through the bearing.
  • the bearing is preferably a ball bearing.
  • the inner wall of the cover 60 is provided with a countersunk groove, the installation groove is arranged on the end wall of the countersunk groove, the cover plate is installed in the countersunk groove, and the installation groove is covered, and the outer wall of the cover plate is connected to the first end cover 60.
  • the inner walls are in the same plane.
  • the cover plate is used to prevent the air between the bearing and the control cavity, and the cover plate is accommodated through the countersunk groove, so that the outer wall of the cover plate and the inner wall of the first end cover are on the same plane, so that the first end cover and the end of the driving part
  • the mating surface is flatter to prevent the occurrence of air-crossing, and the cover plate is installed in the countersunk groove by screws.
  • a sealing part is provided between the end of at least one end of the control chamber and the inner wall of the control chamber to prevent air leakage between the two pressure chambers; the two pressure chambers are the first pressure chamber 12 and the second pressure chamber 13 respectively.
  • the reversing valve further includes an arc-shaped limiting groove 191 and a limiting portion 100 .
  • the arc-shaped limiting groove 191 is provided on the inner end wall of the valve body 10 , where the arc-shaped limiting groove 191 is located.
  • the central axis of the circle coincides with the rotation axis of the valve core 20; the limiting portion 100 is fixed at the end of the valve core 20, and the bottom end of the limiting portion 100 is located in the arc-shaped limiting groove 191, and can be inserted into the arc-shaped limiting groove Move in 191.
  • the end wall of the valve body of the reversing valve of the present application is provided with an arc-shaped limit groove, and the end of the valve core is fixed with a limit portion.
  • the cooperation between the position part and the arc-shaped limit groove can guide the rotation of the valve core, and the two ends of the arc-shaped limit groove can also stop the limit parts, thereby preventing the valve core from rotating too much and improving the valve core.
  • the accuracy of the rotation angle ensures the stability of the reversing valve.
  • the arc angle corresponding to the arc-shaped limiting groove is 90 degrees, and the rotation angle of the valve core can be limited within 90° through the cooperation of the limiting portion and the arc-shaped limiting groove.
  • At least one end of the arc-shaped limiting groove 191 in this embodiment is provided with a locking portion 192, and the limiting portion 100 moves to the locking of the arc-shaped limiting groove 191
  • the locking part 192 cooperates with the limiting part 100 to lock the valve core 20, thereby preventing the valve core from shaking or swaying.
  • the locking portion 192 in this embodiment includes a locking hole 1921, the locking hole 1921 is formed at the bottom of the arc-shaped limiting groove 191, and the limiting portion 100 includes an elastic limiting member,
  • the elastic limiting member has a guiding state in which it is compressed by the groove bottom of the arc-shaped limiting groove 191 and a locking state in which it extends into the locking hole 1921 .
  • the elastic limiter moves inside the arc-shaped limit groove to realize guidance.
  • the elastic limiter pops out and switches to locking. state, it is stuck in the locking hole to realize the locking of the valve core.
  • the elastic limiting member in this embodiment includes a cylinder, a ball 101 and an elastic member 102.
  • An installation cavity is arranged inside the cylinder.
  • the inner wall of one end is provided with an escape hole, and the ball 101 is installed in the installation cavity.
  • the ball abuts on the groove bottom of the arc-shaped limiting groove under the elastic force of the spring, rolling instead of sliding, so that the elastic limiting member is in the arc-shaped limiting groove.
  • the movement in the shape limit groove is smoother.
  • the balls extend into the locking holes to achieve locking. The process is also smoother.
  • both ends of the arc-shaped limiting groove 191 in this embodiment are provided with locking portions 192 .
  • the column in this embodiment includes a first sleeve 103 and a second sleeve 104, the first sleeve 103 is sleeved outside the second sleeve 104, and an installation cavity is formed in the first sleeve 103 and the second sleeve 104. between the two sleeves 104 .
  • the first sleeve 103 is internally provided with an internal thread
  • the second sleeve is externally provided with an external thread
  • the first sleeve 103 and the second sleeve 104 are connected together by the internal thread and the external thread
  • the first sleeve and the second sleeve may also be connected by screws or welded.
  • the arc-shaped limiting groove 191 in this embodiment is a groove machined on the inner end wall of the valve body 10 .
  • the reversing valve in this embodiment further includes a first arc-shaped plate and a second arc-shaped plate, and both the first arc-shaped plate and the second arc-shaped plate are installed on the inner end of the valve body 10 On the wall, the first arc-shaped plate and the second arc-shaped plate are arranged at intervals to form an arc-shaped limiting groove 191, which avoids machining on the end wall of the valve body and ensures the strength of the valve body.
  • the reversing valve in this embodiment further includes a guide wheel, the guide wheel is rotatably sleeved on the outside of the first sleeve 103, the guide wheel is coaxial with the first sleeve 103, The guide wheel makes the rolling friction between the elastic limit piece and the side wall of the arc limit groove, thereby reducing the friction between the two, so that the elastic limit piece can move smoothly in the arc limit groove, thereby making the valve
  • the rotation of the core is smoother.
  • the valve body of the reversing valve of the present application has a first chamber and a second chamber, wherein the second chamber is used to cooperate with the valve core to realize the communication between two of the multiple passages, in order to realize the rotation switching of the valve core , to achieve the purpose of selectively connecting at least two of the multiple passages, the first chamber is separated from the control chamber by the chamber partition, and a driving part is fixed at the end of the valve core, and the driving part can pass through
  • the pressure difference inside the control chamber realizes rotation, which in turn drives the valve core to rotate, realizes the switching of the reversing valve, and has a more sensitive response to pressure, avoiding the problem that the existing pneumatically driven reversing valve is not sensitive enough to change direction.
  • spatially relative terms such as “on”, “over”, “on the surface”, “above”, etc., may be used herein to describe what is shown in the figures.

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Abstract

一种换向阀，包括阀体（10）及可转动地安装在阀体（10）内部的阀芯（20），阀体（10）上设置有多个通路（11），旋转阀芯（20）能够可选择地使多个通路（11）中的至少两个连通，阀体（10）内部设置有彼此分隔开的第一腔室（14）和第二腔室（15），多个通路（11）均与第二腔室（15）连通；换向阀还包括：腔隔部（50），腔隔部（50）设置在第一腔室（14）中，与阀体（10）固定连接，以在第一腔室（14）内分隔出控制腔；驱动部，驱动部设置在控制腔内，与阀芯（20）固定连接，驱动部根据控制腔内的压差带动阀芯（20）旋转。

Description

换向阀 技术领域
本申请涉及换向阀设备技术领域，具体而言，涉及一种换向阀。
背景技术
四通换向阀是热泵空调常用的换向阀件，通过改变压缩机排气和回气流向，实现夏天制冷，冬天制热。
目前，活塞式四通换向阀多数采用气动进行活塞的控制，这就导致了其必须依靠空调的气体压力才能工作，然而目前的气动驱动方式不够灵敏，影响换向阀换向的准确性。
申请内容
本申请的主要目的在于提供一种换向阀，以解决现有技术中的采用气动驱动的换向阀换向不够灵敏的问题。
为了实现上述目的，本申请提供了一种换向阀，包括阀体及可转动地安装在阀体内部的阀芯，阀体上设置有多个通路，旋转阀芯能够可选择地使多个通路中的至少两个连通，阀体内部设置有彼此分隔开的第一腔室和第二腔室，多个通路均与第二腔室连通换向阀还包括：腔隔部，腔隔部设置在第一腔室中，与阀体固定连接，以在第一腔室内分隔出控制腔；驱动部设置在控制腔内，与阀芯的固定连接，驱动部根据控制腔内的压差带动阀芯旋转。
优选地，驱动部包括驱动板，驱动板固定在阀芯的端部，驱动板可转动地设置在控制腔中，并将控制腔分隔成第一压腔和第二压腔，驱动板的转动轴与阀芯同轴。
优选地，阀体上还设置有至少两个控制通道，至少两个控制通道分别与第一压腔和第二压腔连通。
优选地，阀芯还包括：中隔板，中隔板与阀体的轴线垂直，并与阀体的内壁相适配，以将阀体内部分隔成第一腔室和第二腔室。
优选地，腔隔部固定在阀体的靠近驱动板一侧的内端壁上，并抵接于中隔板，以在第一腔室中分隔出控制腔。
优选地，腔隔部固定在阀体的靠近第一腔室一侧的内侧壁上，并抵接于中隔板和阀体的靠近驱动板一侧的内端壁，以在第一腔室中分隔出控制腔。
优选地，腔隔部包括隔板，隔板沿平行于阀芯轴线的方向，以预设角度弯折形成第一板段和第二板段。
优选地，第一板段上设置有第一凸耳结构，第二板段上设置有第二凸耳结构，隔板通过第一凸耳结构和第二凸耳结构连接在阀体的内端壁上或内侧壁上。
优选地，腔隔部还包括第一密封圈，隔板的周向边缘设置有第一凹槽，第一密封圈套设在第一凹槽中。
优选地，换向阀还包括第二密封圈，驱动板的周向边缘设置有第二凹槽，第二密封圈套设在第二凹槽中。
优选地，阀体包括本体及安装在本体两端的第一端盖和第二端盖，驱动板的顶部设置有枢转凸柱，枢转凸柱与阀芯同轴，枢转凸柱枢转连接在第一端盖上。
优选地，腔隔部还包括多个限位柱，多个限位柱分别设置在第一板段靠近控制腔的一侧及第二板段靠近控制腔的一侧。
优选地，限位柱为橡胶柱。
优选地，腔隔部包括隔块，隔块为扇形块，填充第一腔室，并在第一腔室中形成控制腔，隔块端部形成第一面和第二面
优选地，驱动部的端部枢接在第一腔室的端壁中，换向阀还包括：减摩部，减摩部安装在驱动部的端部与第一腔室之间，减摩部与控制腔之间设置有遮挡部，以防止减摩部与控制腔之间串气。
优选地，阀体包括本体及安装在本体两端的第一端盖和第二端盖，驱动部的顶部设置有枢转凸柱，枢转凸柱与阀芯同轴，枢转凸柱枢转连接在第一端盖上；减摩部包括轴承，第一端盖的内壁设置有安装凹槽，轴承固定在安装凹槽中，枢转凸柱穿设在轴承中。
优选地，遮挡部包括盖板，第一端盖的内壁设置有沉头槽，安装凹槽设置在沉头槽的端壁上，盖板安装在沉头槽中，并盖设安装凹槽，盖板的外壁与第一端盖的内壁处于同一平面。
优选地，驱动部将控制腔分隔成两个压腔，驱动部至少一端的端部与控制腔的内壁之间设置有密封部，以防止两个压腔之间漏气；两个压腔分别是第一压腔和第二压腔。
优选地，换向阀还包括：弧形限位槽，弧形限位槽设置在阀体的内端壁上，弧形限位槽所在圆的中轴线与阀芯的旋转轴线重合；限位部，限位部固定在阀芯的端部，限位部的底端位于弧形限位槽中，并能够在弧形限位槽中移动。
优选地，弧形限位槽的至少一端设置有锁定部，在限位部运动到弧形限位槽的锁定部所在的一端的情况下，锁定部与限位部配合，以使阀芯锁定。
优选地，锁定部包括锁定孔，锁定孔形成在弧形限位槽的槽底，限位部包括弹性限位件，弹性限位件具有被弧形限位槽的槽底压缩的导向状态，及伸入锁定孔的锁定状态。
优选地，弹性限位件包括：柱体，柱体内部设置有安装腔，柱体的第一端的内壁设置有让位孔；滚珠，滚珠安装在安装腔中，在弹性限位件处于锁定状态的情况下，滚珠经过让位 孔抵接在锁定孔中；弹性件，弹性件的第一端抵接在滚珠上，弹性件的第二端抵接在柱体的第二端的内壁上。
优选地，弧形限位槽的两端均设置有锁定部。
优选地，柱体包括第一套筒和第二套筒，第一套筒套设在第二套筒外部，安装腔形成在第一套筒和第二套筒之间。
优选地，第一套筒内部设置内螺纹，第二套管外部设置有外螺纹，第一套筒与第二套筒通过内螺纹与外螺纹的连接在一起。
优选地，弧形限位槽为在阀体内端壁上加工出的槽。
优选地，换向阀还包括第一弧形板和第二弧形板，第一弧形板和第二弧形板均安装在阀体的内端壁上，第一弧形板和第二弧形板间隔设置以形成弧形限位槽。
优选地，换向阀还包括导轮，导轮可转动地套设在第一套筒的外部，导轮与第一套筒同轴。
应用本申请的技术方案，本申请的换向阀的阀体内部具有第一腔室、第二腔室，其中第二腔室用于与阀芯配合实现使多个通路中的两个连通，为了实现阀芯的旋转切换，达到可选择地使多个通路中的至少两个连通的目的，第一腔室中通过腔隔部分隔出了控制腔，并在阀芯的端部固定了驱动部，该驱动部能够通过控制腔内部的压差实现旋转，进而带动阀芯旋转，实现换向阀的切换，对压力的反应更加灵敏，避免了已有采用气动驱动的换向阀换向不够灵敏的问题。
附图说明
构成本申请的一部分的说明书附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1示意性示出了本申请的换向阀的实施例的剖视图；
图2示意性示出了本申请的换向阀的第一腔室内部的实施例的结构图；
图3示意性示出了本申请的第一端盖及腔隔部的实施例的结构图；
图4示意性示出了本申请的驱动板的实施例的结构图；
图5示意性示出了本申请的阀芯及驱动板的实施例的结构图；
图6示意性示出了本申请的阀芯及驱动板的实施例的剖视图；
图7示意性示出了本申请的换向阀的实施例的爆炸图；
图8示意性示出了本申请的第一腔室的实施例的管路控制图；
图9示意性示出了本申请的换向阀的第一端盖、驱动板及两者之间的减摩部的剖视图；
图10示意性示出了已有换向阀系统的结构图；
图11示意性示出了具有弧形限位槽的阀体端壁内侧的实施例的结构图；
图12示意性示出了具有弧形限位槽的阀体端壁的实施例的剖视图；
图13示意性示出了限位部的实施例的内部结构图。
其中，上述附图包括以下附图标记：
10、阀体；11、通路；12、第一压腔；13、第二压腔；14、第一腔室；15、第二腔室；16、控制通道；17、减摩部；18、遮挡部；191、弧形限位槽；192、锁定部；1921、锁定孔；20、阀芯；30、驱动板；31、第二凹槽；311、第二密封圈；32、枢转凸柱；40、中隔板；50、腔隔部；51、第一板段；52、第二板段；53、第一凸耳结构；54、第二凸耳结构；55、第一凹槽；60、第一端盖；61、第二端盖；62、本体；70、限位柱；80、四通阀导阀；90、通路；100、限位部；101、滚珠；102、弹性件；103、第一套筒；104、第二套筒。
具体实施方式
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。
正如背景技术中记载的，四通换向阀是热泵空调常用的换向阀件，通过改变压缩机排气和回气流向，实现夏天制冷，冬天制热。目前，活塞式四通换向阀多数采用气动进行活塞的控制，这就导致了其必须依靠空调的气体压力才能工作，然而目前的气动驱动方式不够灵敏，影响换向阀换向的准确性。
参见图1至图14所示，本申请的实施例提供了一种换向阀，包括阀体10及可转动地安装在阀体10内部的阀芯20，阀体10上设置有多个通路11，旋转阀芯20能够可选择地使多个通路11中的至少两个连通，阀体10内部设置有彼此分隔开的第一腔室14和第二腔室15，多个通路11均与第二腔室15连通，换向阀还包括：腔隔部50，腔隔部设置在第一腔室14中，与阀体10固定连接，以在第一腔室14内分隔出控制腔；驱动部，驱动部设置在控制腔内，与阀芯20的固定连接，驱动部根据控制腔内的压差带动阀芯20旋转。本申请的换向阀的阀体内部具有第一腔室、第二腔室，其中第二腔室用于与阀芯配合实现使多个通路中的两个连通，为了实现阀芯的旋转切换，达到可选择地使多个通路中的至少两个连通的目的，第一腔室中通过腔隔部分隔出了控制腔，并在阀芯的端部固定了驱动部，该驱动部能够通过控制腔内部的压差实现旋转，进而带动阀芯旋转，实现换向阀的切换，对压力的反应更加灵敏，避免了已有采用气动驱动的换向阀换向不够灵敏的问题。
具体来说，驱动部包括驱动板30，驱动板固定在阀芯的端部，驱动板30可转动地设置在控制腔中，并将控制腔分隔成第一压腔12和第二压腔13，驱动板30的转动轴与阀芯20同轴。控 制腔中分隔成第一压腔和第二压腔，通过与第一压腔及第二压腔连通接入流体，在第一压腔和第二压腔中分别产生相对的高压和低压，进而推动驱动板转动，并带动阀芯转动，实现换向功能，由于第一压腔及第二压腔的体积小。因此，在第一压腔和第二压腔内部通入流体后，对压力的反应更加灵敏，避免了已有采用气动驱动的换向阀换向不够灵敏的问题。
参见图8所示，其中，第一压腔和第二压腔通入的流体可为液压油，也可为气体，在一种优选地实施例中，第一压腔、第二压腔是阀体、腔隔部、驱动板围成的两个扇形区域。第一压腔与第二压腔分别与四通阀导阀的E管和C管连接，四通阀导阀80的D管与S管分别与空调压缩机的排气管和吸气管连接。至于压力，采用空调系统的排气压力和吸气压力即可。
为了在控制腔内形成压差，本实施例中的阀体10上还设置有至少两个控制通道16，至少两个控制通道16分别与第一压腔12和第二压腔13连通。通过与第一压腔及第二压腔连通的控制通道16接入流体，在第一压腔和第二压腔中分别产生相对的高压和低压，进而推动驱动板转动，并带动阀芯转动，实现换向功能，
具体来说，阀芯20包括中隔板40、下隔板及设置在中隔板40、下隔板之间的间隔板，间隔板将阀体的第二腔室15分隔成互不连通的两个腔室，两个腔室中的至少一个能够同时连通两个通路。为了在阀体中隔出第一腔室及第二腔室，防止第一腔室中的流体进入第二腔室，本实施例中的换向阀中隔板40与阀体10的轴线垂直，并与阀体10的内壁相适配，以将阀体10内部分隔成第一腔室14和第二腔室15，其中，阀体10包括本体及安装在本体62两端的第一端盖60和第二端盖61。
具体来说，为了保证控制腔的封闭性，本实施例中的腔隔部50固定在阀体10的靠近驱动板30一侧的内端壁上即第一端盖60上，并抵接于中隔板40，以在第一腔室14中分隔出控制腔。或者，腔隔部50固定在阀体10的内侧壁上，并抵接于中隔板40和阀体10的第一端盖60的内端壁，以在第一腔室14中分隔出控制腔。
本实施例中的腔隔部50包括隔板，隔板沿平行于阀芯20轴线的方向，以预设角度弯折形成第一板段51和第二板段52。其中，该预设角度在150°～100°之间，优选为120°，以使得驱动板具有足够的摆动角度实现阀芯的工作，在本实施例中，驱动板的摆动角度为90°。在其他实施例中，隔板可以不弯曲。其中，隔板可为金属板材或非金属板材。
在另一种实施例中，腔隔部包括隔块，隔块为扇形块，填充第一腔室，并在第一腔室中形成控制腔，隔块端部形成第一面和第二面。其中，第一面和第二面之间的夹角在150°～100°之间，优选为120°，以使得驱动板具有足够的摆动角度实现阀芯的工作，在本实施例中，驱动板的摆动角度为90°。
为了将隔板稳定地固定在阀体上，本实施例中的第一板段51上设置有第一凸耳结构53，第二板段52上设置有第二凸耳结构54，隔板通过第一凸耳结构53和第二凸耳结构54连接在阀体10的内端壁上或内侧壁上。其中，凸耳结构内部设置有连接孔，可穿入螺丝，通过螺丝与凸耳结构配合固定在阀体上，在其他实施例中也可采用铆钉穿过凸耳结构进行连接，在一 种优选地实施例中，在通过螺丝或铆钉连接后，在凸耳与阀体的内端壁之间通过胶接或焊接的方式进一步地保证连接稳定性。
为了保证控制腔的密封性，本实施例中的腔隔部50还包括第一密封圈，隔板的周向边缘设置有第一凹槽55，第一密封圈套设在第一凹槽55中。第一凹槽槽截面为方形，也可以是楔型、V型、圆形等等。密封圈首选橡胶O型圈，大小尺寸要满足安装到隔板上，有一定的预紧力，不至于脱落，也可以是其他材料其他截面形状的密封圈。
为了防止第一压腔与第二压腔的流体通过驱动板串气，本实施例中的换向阀还包括第二密封圈，驱动板30的周向边缘设置有第二凹槽31，第二密封圈套设在第二凹槽中。第二凹槽槽截面为方形，也可以是楔型、V型、圆形等等。密封圈首选橡胶O型圈，大小尺寸要满足安装到驱动板上，有一定的预紧力，不至于脱落，也可以是其他材料其他截面形状的密封圈。
其中，本实施例中的阀体10包括本体及安装在本体两端的第一端盖60和第二端盖，驱动板30的顶部设置有枢转凸柱32，枢转凸柱与阀芯20同轴，枢转凸柱枢转连接在第一端盖60上。
为了防止驱动板与隔板之间发生碰撞，本实施例中的腔隔部50还包括多个限位柱70，多个限位柱70分别设置在第一板段51靠近控制腔的一侧及第二板段52靠近控制腔的一侧，通过限位柱对驱动板的运动进行限位，进而防止驱动板与隔板之间发生碰撞。
为了防止驱动板与隔板之间发生碰撞，产生噪音，本实施例中的限位柱为橡胶柱。
参见图9所示，驱动部的端部枢接在第一腔室的端壁中。换向阀还包括减摩部17，减摩部17安装在驱动部的端部与第一腔室之间，减摩部17与控制腔之间设置有遮挡部18，以防止减摩部17与控制腔之间串气，而减摩部与控制腔之间的串气会导致两个压腔之间通过减摩部串气，这样设置有效保证了换向阀的灵敏性。
本申请的换向阀的阀体内部具有第一腔室、第二腔室，其中第二腔室用于与阀芯配合实现使多个通路中的两个连通，为了实现阀芯的旋转切换，达到可选择地使多个通路中的至少两个连通的目的，第一腔室中分隔出控制腔，并在阀芯的端部固定了驱动部，该驱动部能够通过控制腔内部的压差实现旋转，进而带动阀芯旋转，实现换向阀的切换，对压力的反应更加灵敏，与此同时，在驱动部的端部与第一腔室之间设置减摩部，使得驱动部的旋转更加流畅，且通过遮挡部的遮挡作用，防止减摩部与控制腔之间串气，有效地避免了已有采用气动驱动的换向阀换向不够灵敏的问题。其中，驱动部与阀芯，也可采用焊接、粘接、榫槽等方式固定，固定方式不限。
为了便于安装及拆卸，安装时，工作人员将阀芯装入本体中，再通过第一端盖及第二端盖盖在本体的两端即可，其中第一端盖与本体的连接方式可为螺钉连接，也可在第一端盖的周向加工外螺纹，在本体的内侧的端部加工内螺纹，通过旋拧的方式连接；第二端盖与本体的连接方式可为螺钉连接，也可在第二端盖的周向加工外螺纹，在本体的内侧的端部加工内螺纹，通过旋拧的方式连接。
为了实现减摩部对枢转凸柱的减摩功能，本实施例中的减摩部17包括轴承，第一端盖60的内壁设置有安装凹槽，轴承固定在安装凹槽中，枢转凸柱32穿设在轴承中。其中，轴承优选为滚珠轴承。
正如前述，设置轴承在减小摩擦力的同时，会导致两个压腔的气体通过轴承内外圈间隙及滚珠间隙串气，为此，本实施例中的遮挡部18包括盖板，第一端盖60的内壁设置有沉头槽，安装凹槽设置在沉头槽的端壁上，盖板安装在沉头槽中，并盖设安装凹槽，盖板的外壁与第一端盖60的内壁处于同一平面。通过盖板防止轴承与控制腔之间串气，通过沉头槽对盖板进行容纳，使得盖板的外壁与第一端盖的内壁处于同一平面，使得第一端盖与驱动部的端部的配合面更加平整，防止串气现象发生，其中，盖板通过螺钉安装在沉头槽中。
由于两个压腔的压差控制驱动部在控制腔内运动，这就导致了驱动部与控制腔内壁之间的密封尤为重要，为此，驱动部将控制腔分隔成两个压腔，驱动部至少一端的端部与控制腔的内壁之间设置有密封部，以防止两个压腔之间漏气；两个压腔分别是第一压腔12和第二压腔13。
如图11至图13所示，换向阀还包括弧形限位槽191和限位部100，弧形限位槽191设置在阀体10的内端壁上，弧形限位槽191所在圆的中轴线与阀芯20的旋转轴线重合；限位部100固定在阀芯20的端部，限位部100的底端位于弧形限位槽191中，并能够在弧形限位槽191中移动。本申请的换向阀的阀体内端壁上设置有弧形限位槽，阀芯的端部固定有限位部，阀芯旋转的过程中，限位部在弧形限位槽中移动，通过限位部与弧形限位槽的配合，可实现对阀芯旋转的导向，也可通过弧形限位槽的两端止挡限位部，从而防止阀芯旋转角度过大，提高了阀芯旋转角度的准确性，保证了换向阀的稳定性。
在一种优选地实施例中，弧形限位槽所对应的圆弧角为90度，通过限位部与弧形限位槽的配合，可限制阀芯旋转角度在90°内。
为了防止阀芯在旋转到位后，发生晃动或摇摆，在本实施例中的弧形限位槽191的至少一端设置有锁定部192，在限位部100运动到弧形限位槽191的锁定部192所在的一端的情况下，锁定部192与限位部100配合，以使阀芯20锁定，从而防止阀芯晃动或摇摆。
具体来说，为了实现锁定部的锁定功能，本实施例中的锁定部192包括锁定孔1921，锁定孔1921形成在弧形限位槽191的槽底，限位部100包括弹性限位件，弹性限位件具有被弧形限位槽191的槽底压缩的导向状态，及伸入锁定孔1921的锁定状态。阀芯旋转过程中，弹性限位件在弧形限位槽的内部移动，实现导向，在弹性限位件运动到弧形限位槽的锁定孔处时，弹性限位件弹出，切换至锁定状态，卡在锁定孔中，实现对阀芯的锁定。
为了保证弹性限位件在弧形限位槽中运动的流畅性，本实施例中的弹性限位件包括柱体、滚珠101及弹性件102，柱体内部设置有安装腔，柱体的第一端的内壁设置有让位孔，滚珠101安装在安装腔中，在弹性限位件处于锁定状态的情况下，滚珠101经过让位孔抵接在锁定孔1921中，弹性件102的第一端抵接在滚珠101上，弹性件102的第二端抵接在柱体的第二端的内壁上。在弹性限位件在弧形限位槽的内部移动的过程中，滚珠在弹簧的弹力作用下抵 接在弧形限位槽的槽底上，以滚动代替滑动，使得弹性限位件在弧形限位槽内的运动更加流畅，在弹性限位件处于锁定状态时，滚珠伸入锁定孔实现锁定，在需要换向时，滚珠受一定力后即可从锁定孔中滚出，换向过程也更加流畅。
为了实现对阀芯两个极限位置的锁定，本实施例中的弧形限位槽191的两端均设置有锁定部192。
为了便于安装，本实施例中的柱体包括第一套筒103和第二套筒104，第一套筒103套设在第二套筒104外部，安装腔形成在第一套筒103和第二套筒104之间。
具体来说，本实施例中的第一套筒103内部设置内螺纹，第二套管外部设置有外螺纹，第一套筒103与第二套筒104通过内螺纹与外螺纹的连接在一起，在其他实施例中，第一套筒与第二套筒之间也可以通过螺钉进行连接，或进行焊接。
在一种实施例中，本实施例中的弧形限位槽191为在阀体10内端壁上加工出的槽。
在另一种实施例中，本实施例中的换向阀还包括第一弧形板和第二弧形板，第一弧形板和第二弧形板均安装在阀体10的内端壁上，第一弧形板和第二弧形板间隔设置以形成弧形限位槽191，免于在阀体内端壁上加工，保证阀体强度。
在一种优选地实施例中，本实施例中的换向阀还包括导轮，导轮可转动地套设在第一套筒103的外部，导轮与第一套筒103同轴，通过导轮使得弹性限位件与弧形限位槽的侧壁之间滚动摩擦，进而降低两者之间的摩擦力，使得弹性限位件在弧形限位槽中能够流畅运动，进而使得阀芯的旋转更加流畅。
从以上的描述中，可以看出，本申请上述的实施例实现了如下技术效果：
本申请的换向阀的阀体内部具有第一腔室、第二腔室，其中第二腔室用于与阀芯配合实现使多个通路中的两个连通，为了实现阀芯的旋转切换，达到可选择地使多个通路中的至少两个连通的目的，第一腔室中通过腔隔部分隔出了控制腔，并在阀芯的端部固定了驱动部，该驱动部能够通过控制腔内部的压差实现旋转，进而带动阀芯旋转，实现换向阀的切换，对压力的反应更加灵敏，避免了已有采用气动驱动的换向阀换向不够灵敏的问题。
应该指出，上述详细说明都是例示性的，旨在对本申请提供进一步的说明。除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。
需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的术语 在适当情况下可以互换，以便这里描述的本申请的实施方式例如能够以除了在这里图示或描述的那些以外的顺序实施。
此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为了便于描述，在这里可以使用空间相对术语，如“在……之上”、“在……上方”、“在……上表面”、“上面的”等，用来描述如在图中所示的一个器件或特征与其他器件或特征的空间位置关系。应当理解的是，空间相对术语旨在包含除了器件在图中所描述的方位之外的在使用或操作中的不同方位。
例如，如果附图中的器件被倒置，则描述为“在其他器件或构造上方”或“在其他器件或构造之上”的器件之后将被定位为“在其他器件或构造下方”或“在其他器件或构造之下”。因而，示例性术语“在……上方”可以包括“在……上方”和“在……下方”两种方位。该器件也可以其他不同方式定位(旋转90度或处于其他方位)，并且对这里所使用的空间相对描述作出相应解释。
在上面详细的说明中，参考了附图，附图形成本文的一部分。在附图中，类似的符号典型地确定类似的部件，除非上下文以其他方式指明。在详细的说明书、附图及权利要求书中所描述的图示说明的实施方案不意味是限制性的。在不脱离本文所呈现的主题的精神或范围下，其他实施方案可以被使用，并且可以作其他改变。将容易理解的是，如本文一般所描述的及附图所图示说明的，本公开的方面可以在广泛种类的不同的配置中被编排、代替、组合、分开以及设计，所有这些在本文被明确地考虑。
根据本申请所描述的特定实施方案的本公开将不受限制，其被意图作为各种方面的图示说明。如对本领域技术人员将是清晰的那样，在不脱离本公开的精神和范围下可以作许多修改和变更。在本公开范围内，功能上等同的方法和设备，除了本文所列举的那些之外，从前述说明书来看对本领域技术人员将是清晰的。这样的修改和变更意图落入所附权利要求书的范围内。本公开将仅由所附权利要求书的条款以及这样的权利要求所给予权利的等同物的全部范围限制。将理解的是，本公开不限于特定的方法、试剂、化合物、组成或生物系统，其当然可以变化。也将理解的是，本文所使用的术语仅是出于描述特定的实施方案的目的，而并非意图是限制性的。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (28)

  1. 一种换向阀，其特征在于，包括阀体(10)及可转动地安装在所述阀体(10)内部的阀芯(20)，所述阀体(10)上设置有多个通路(11)，旋转所述阀芯(20)能够可选择地使多个所述通路(11)中的至少两个连通，所述阀体(10)内部设置有彼此分隔开的第一腔室(14)和第二腔室(15)，多个所述通路(11)均与所述第二腔室(15)连通所述换向阀还包括：
    腔隔部(50)，所述腔隔部设置在所述第一腔室(14)中，与所述阀体(10)固定连接，以在所述第一腔室(14)内分隔出控制腔；
    驱动部，所述驱动部设置在所述控制腔内，与所述阀芯(20)固定连接，所述驱动部根据控制腔内的压差带动所述阀芯(20)旋转。
  2. 根据权利要求1所述的换向阀，其特征在于，所述驱动部包括驱动板(30)，所述驱动板(30)固定在所述阀芯(20)的端部，所述驱动板(30)可转动地设置在所述控制腔中，
    并将所述控制腔分隔成第一压腔(12)和第二压腔(13)，所述驱动板(30)的转动轴与所述阀芯(20)同轴。
  3. 根据权利要求2所述的换向阀，其特征在于，所述阀体(10)上还设置有至少两个控制通道(16)，至少两个所述控制通道(16)分别与所述第一压腔(12)和所述第二压腔(13)连通。
  4. 根据权利要求2所述的换向阀，其特征在于，所述阀芯(20)包括中隔板(40)，所述中隔板(40)与所述阀体(10)的轴线垂直，并与所述阀体(10)的内壁相适配，以将所述阀体(10)内部分隔成所述第一腔室(14)和所述第二腔室(15)。
  5. 根据权利要求4所述的换向阀，其特征在于，所述腔隔部(50)固定在所述阀体(10)的靠近所述驱动板(30)一侧的内端壁上，并抵接于所述中隔板(40)，以在所述第一腔室(14)中分隔出控制腔。
  6. 根据权利要求4所述的换向阀，其特征在于，所述腔隔部(50)固定在所述阀体(10)的靠近所述第一腔室(14)一侧的内侧壁上，并抵接于所述中隔板(40)和所述阀体(10)的靠近所述驱动板(30)一侧的内端壁，以在所述第一腔室(14)中分隔出控制腔。
  7. 根据权利要求5或6所述的换向阀，其特征在于，所述腔隔部(50)包括隔板，所述隔板沿平行于所述阀芯(20)轴线的方向，以预设角度弯折形成第一板段(51)和第二板段(52)。
  8. 根据权利要求7所述的换向阀，其特征在于，所述第一板段(51)上设置有第一凸耳结构(53)，所述第二板段(52)上设置有第二凸耳结构(54)，所述隔板通过所述第一凸耳结构(53)和所述第二凸耳结构(54)连接在所述阀体(10)的内端壁上或内侧壁上。
  9. 根据权利要求7所述的换向阀，其特征在于，所述腔隔部(50)还包括第一密封圈，所述隔板的周向边缘设置有第一凹槽(55)，所述第一密封圈套设在所述第一凹槽(55)中。
  10. 根据权利要求2所述的换向阀，其特征在于，所述换向阀还包括第二密封圈，所述驱动板(30)的周向边缘设置有第二凹槽(31)，所述第二密封圈套设在所述第二凹槽(31)中。
  11. 根据权利要求2所述的换向阀，其特征在于，所述阀体(10)包括本体(62)及安装在所述本体(62)两端的第一端盖(60)和第二端盖(61)，所述驱动板(30)的顶部设置有枢转凸柱(32)，所述枢转凸柱与所述阀芯(20)同轴，所述枢转凸柱枢转连接在所述第一端盖(60)上。
  12. 根据权利要求7所述的换向阀，其特征在于，所述腔隔部(50)还包括多个限位柱，多个所述限位柱分别设置在所述第一板段(51)靠近所述控制腔的一侧及所述第二板段(52)靠近所述控制腔的一侧。
  13. 根据权利要求12所述的换向阀，其特征在于，所述限位柱为橡胶柱。
  14. 根据权利要求5或6所述的换向阀，其特征在于，所述腔隔部(50)包括隔块，所述隔块为扇形块，填充第一腔室(14)，并在第一腔室中形成控制腔，隔块端部形成第一面和第二面。
  15. 根据权利要求1所述的换向阀，其特征在于，所述驱动部的端部枢接在所述第一腔室的端壁中，所述换向阀还包括：
    减摩部(17)，所述减摩部(17)安装在所述驱动部的端部与所述第一腔室之间，所述减摩部(17)与所述控制腔之间设置有遮挡部(18)，以防止所述减摩部(17)与所述控制腔之间串气。
  16. 根据权利要求15所述的换向阀，其特征在于，所述阀体(10)包括本体(62)及安装在所述本体(62)两端的第一端盖(60)和第二端盖(61)，所述驱动部的顶部设置有枢转凸柱(32)，所述枢转凸柱(32)与所述阀芯(20)同轴，所述枢转凸柱(32)枢转连接在所述第一端盖(60)上；所述减摩部(17)包括轴承，所述第一端盖(60)的内壁设置有安装凹槽，所述轴承固定在所述安装凹槽中，所述枢转凸柱(32)穿设在所述轴承中。
  17. 根据权利要求16所述的换向阀，其特征在于，所述遮挡部(18)包括盖板，所述第一端盖(60)的内壁设置有沉头槽，所述安装凹槽设置在所述沉头槽的端壁上，所述盖板安装在沉头槽中，并盖设所述安装凹槽，所述盖板的外壁与所述第一端盖(60)的内壁处于同一平面。
  18. 根据权利要求1所述的换向阀，其特征在于，所述驱动部将所述控制腔分隔成两个压腔，所述驱动部至少一端的端部与控制腔的内壁之间设置有密封部，以防止两个所述压腔之间漏气；两个所述压腔分别是第一压腔(12)和第二压腔(13)。
  19. 根据权利要求1所述的换向阀，其特征在于，所述换向阀还包括：
    弧形限位槽(191)，所述弧形限位槽(191)设置在所述阀体(10)的内端壁上，所 述弧形限位槽(191)所在圆的中轴线与所述阀芯(20)的旋转轴线重合；
    限位部(100)，所述限位部(100)固定在所述阀芯(20)的端部，所述限位部(100)的底端位于所述弧形限位槽(191)中，并能够在所述弧形限位槽(191)中移动。
  20. 根据权利要求19所述的换向阀，其特征在于，所述弧形限位槽(191)的至少一端设置有锁定部(192)，在所述限位部(100)运动到所述弧形限位槽(191)的所述锁定部(192)所在的一端的情况下，所述锁定部(192)与所述限位部(100)配合，以使所述阀芯(20)锁定。
  21. 根据权利要求20所述的换向阀，其特征在于，所述锁定部(192)包括锁定孔(1921)，所述锁定孔(1921)形成在所述弧形限位槽(191)的槽底，所述限位部(100)包括弹性限位件，所述弹性限位件具有被所述弧形限位槽(191)的槽底压缩的导向状态，及伸入所述锁定孔(1921)的锁定状态。
  22. 根据权利要求21所述的换向阀，其特征在于，所述弹性限位件包括：
    柱体，所述柱体内部设置有安装腔，所述柱体的第一端的内壁设置有让位孔；
    滚珠(101)，所述滚珠(101)安装在所述安装腔中，在所述弹性限位件处于所述锁定状态的情况下，所述滚珠(101)经过所述让位孔抵接在所述锁定孔(1921)中；
    弹性件(102)，所述弹性件(102)的第一端抵接在所述滚珠(101)上，所述弹性件(102)的第二端抵接在所述柱体的第二端的内壁上。
  23. 根据权利要求20所述的换向阀，其特征在于，所述弧形限位槽(191)的两端均设置有所述锁定部(192)。
  24. 根据权利要求22所述的换向阀，其特征在于，所述柱体包括第一套筒(103)和第二套筒(104)，所述第一套筒(103)套设在所述第二套筒(104)外部，所述安装腔形成在所述第一套筒(103)和所述第二套筒(104)之间。
  25. 根据权利要求24所述的换向阀，其特征在于，所述第一套筒(103)内部设置内螺纹，所述第二套管外部设置有外螺纹，所述第一套筒(103)与所述第二套筒(104)通过所述内螺纹与所述外螺纹的连接在一起。
  26. 根据权利要求19所述的换向阀，其特征在于，所述弧形限位槽(191)为在所述阀体(10)内端壁上加工出的槽。
  27. 根据权利要求19所述的换向阀，其特征在于，所述换向阀还包括第一弧形板和第二弧形板，所述第一弧形板和所述第二弧形板均安装在所述阀体(10)的内端壁上，所述第一弧形板和所述第二弧形板间隔设置以形成弧形限位槽(191)。
  28. 根据权利要求24所述的换向阀，其特征在于，所述换向阀还包括导轮，所述导轮可转动地套设在所述第一套筒(103)的外部，所述导轮与所述第一套筒(103)同轴。
PCT/CN2021/107193 2020-07-17 2021-07-19 换向阀 Ceased WO2022012692A1 (zh)

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