Classifications

• • 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
  • F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
  • F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
  • F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way 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
  • 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
  • F16K11/087—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 spherical 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
  • 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
  • F16K11/087—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 spherical plug
  • F16K11/0873—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 spherical plug the plug being only rotatable around one spindle
  • F16K11/0876—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 spherical plug the plug being only rotatable around one spindle one connecting conduit having the same axis as the spindle
• • 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
  • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs

Definitions

• the present disclosure relates to a flow path switching valve.
• China Patent Application Publication No. 111828682 discloses a control valve (flow path switching valve) having a rotating valve body within a valve body and having five or more ports (pipe joints).
• connection ports and the combination of flow paths are fixed according to the specifications, so there is no degree of freedom, and if the specifications change, it will be necessary to start over from the design.
• An object of the present disclosure is to enable easy realization of flow path switching valves with various specifications.
• the flow path switching valve has a valve chamber formed therein, and a first inlet/outlet and a second inlet/outlet through which fluid enters and exits, respectively, are formed on a wall surface forming the valve chamber, and the valve a valve body having a third inlet/outlet formed at the bottom of the chamber; a valve body rotatably disposed within the valve chamber and having a flow path formed therein; and a first flow path communicating with the first inlet/outlet; a second flow path that is arranged in parallel with the first flow path across the valve body and communicates with the second inlet/outlet; and a third flow path that communicates with the third inlet/outlet and is open on the opposite side to the third inlet/outlet.
• valve unit being connected to the valve unit so that communication states of the first inlet/outlet, the second inlet/outlet, and the third inlet/outlet are switched through the flow path of the valve body; a rotation drive unit that rotates the valve body, and the first flow path and the second flow path of another valve unit are connected to the first flow path and the second flow path of the valve unit, respectively. It is possible to connect and connect.
• this flow path switching valve by rotating the valve body using the rotary drive unit, the communication state of the first inlet/outlet, the second inlet/outlet, and the third inlet/outlet of the valve chamber can be switched through the flow path of the valve body.
• the first flow path and second flow path of one valve unit can be connected to the first flow path and second flow path of another valve unit, respectively, so various specifications can be achieved depending on the combination of valve units.
• a flow path switching valve can be easily realized.
• a female joint is provided at one end of the first flow path and the second flow path, and the other end of the first flow path and the second flow path are provided with a female joint. Each end is provided with a male joint that can be connected to the female joint.
• a female joint is provided at one end of the first flow path and the second flow path, and a male joint with a structure connectable to the female joint is provided at the other end of the first flow path and the second flow path. It is being Therefore, for example, the first flow paths and the second flow paths of one valve unit and another valve unit can be easily connected.
• the third flow path has a bent portion, and a portion of the bent portion facing the third inlet/outlet has a spherical surface. A shaped recess is provided.
• the fluid that flows from the valve chamber into the third flow path through the third inlet/outlet passes through the bending part.
• a spherical recess is provided at a portion of the bent portion of the third flow path that faces the third inlet/outlet, so compared to a configuration in which there is no recess at that portion and the portion is simply bent. This reduces fluid resistance. Therefore, pressure loss in the third flow path can be suppressed.
• the flow path of the valve body includes a rib extending in a direction toward the third inlet/outlet. It is formed.
• the ribs extending in the direction toward the third inlet/outlet are formed in the flow path of the valve body, so that the fluid flowing inside the valve body can be rectified. Furthermore, by applying force to the ribs when assembling the valve body into the valve chamber, the orientation of the valve body can be easily adjusted.
• connection portion of the first flow path with the first inlet and outlet includes the first inlet and outlet.
• a first protrusion protruding from the side toward the inside of the first flow path is provided, and a connection portion of the second flow path with the second inlet/outlet is provided with a first protrusion that projects from the second inlet/outlet side to the second flow path.
• a second projection is provided that projects toward the interior of the channel.
• the first protrusion is provided at the connection portion of the first flow path with the first inlet/outlet of the valve chamber, so that the fluid flowing through the first flow path can be guided to the first inlet/outlet.
• the second protrusion is provided at the connection portion of the second flow path with the second inlet/outlet of the valve chamber, the fluid flowing through the second flow path can be guided to the second inlet/outlet. In this way, the flow of fluid from the first flow path and the second flow path into the valve chamber can be promoted.
• the other valve unit is stacked on the side opposite to the rotary drive section of the one valve unit. It is said that it is possible to connect.
• the degree of freedom in the combination of valve units can be increased by stacking and connecting another valve unit to the side opposite to the rotational drive part of one valve unit.
• a portion of one of the valve units that overlaps with another of the valve units is a lid that closes the valve chamber of the other valve unit. ing.
• the part of one valve unit that overlaps with another valve unit is used as a lid that closes off the valve chamber of the other valve unit.
• a lid that closes off the valve chamber of the other valve unit.
• An eighth aspect is the flow path switching valve according to the sixth aspect or the seventh aspect, in which one of the valve units is connected to the other valve unit in an overlapping manner, and two of the valves in the two valve units are connected to each other in an overlapping manner.
• the body is rotated by one of the rotational drives.
• the two valve bodies in the two stacked valve units are rotated by one rotary drive section, so compared to the case where each of the two valve units is provided with a rotary drive section, the number of parts is reduced. reduction and cost reduction.
• the center of the end of the first flow path and the end of the second flow path in one of the valve units is provided.
• the distance between the valve units is equal to the distance between the centers of the end portions of the first flow path in the overlapping direction in a state where one of the valve units and the other valve unit are overlapped and connected.
• a tenth aspect is the flow path switching valve according to any one of the first to ninth aspects, wherein a sub flow path is provided at a position facing the first inlet/outlet in the first flow path; A storage tank can be connected to the sub-channel.
• An eleventh aspect is the flow path switching valve according to any one of the first to tenth aspects, in which a pump can be attached to each of the first flow path and the second flow path.
• a twelfth aspect is the flow path switching valve according to the third aspect, in which a through hole is formed at the bottom of the recess, and the through hole is closed by a closing section provided with a temperature sensor.
• flow path switching valves with various specifications can be easily realized.
• FIG. 1 is a perspective view showing the overall configuration of a flow path switching valve according to an embodiment of the present disclosure.
• FIG. 3 is a perspective view showing an example in which a storage tank is attached to a flow path switching valve.
• FIG. 2 is a perspective view showing an example in which a storage tank and a pump are attached to a flow path switching valve.
• FIG. 2 is a partially cutaway perspective view showing a flow path switching valve in which two valve units are stacked one on top of the other and two valve bodies are rotated by one rotation drive unit.
• FIG. 3 is a partially cutaway perspective view showing the valve unit.
• FIG. 3 is a partially cutaway perspective view showing the valve unit.
• FIG. 3 is a front view showing the valve unit viewed from the male joint side of the first flow path.
• FIG. 3 is a front view showing the valve unit viewed from the male joint side of the first flow path.
• FIG. 7 is a partial cross-sectional view showing the valve unit viewed from the opening side of the third flow path and illustrating a state in which the second flow path is cut in the radial direction. It is a front view showing a valve body. It is a bottom view showing a valve body. FIG. 7 is an enlarged cross-sectional view showing a state in which an opening provided in the middle of the first flow path is closed with a lid member. A cross-sectional view illustrating a flow path switching valve in which two valve units are stacked, in which a portion of one valve unit that is stacked with another valve unit is a lid that closes the valve chamber of the other valve unit. It is. 7 is a cross-sectional view showing a flow path switching valve according to Modification 1.
• FIG. 1 Modification 1.
• FIG. 7 is a cross-sectional view showing a flow path switching valve according to Modification 1.
• FIG. 7 is a perspective view showing a flow path switching valve according to a second modification.
• FIG. 7 is a perspective view showing a flow path switching valve according to a second modification.
• FIG. 7 is a partially cutaway perspective view showing a flow path switching valve according to Modification Example 3;
• FIG. 7 is a perspective view showing a flow path switching valve according to modification example 4;
• FIG. 7 is a block diagram showing one switching mode of a flow path switching valve according to modification 4;
• 7 is a block diagram showing another switching mode of the flow path switching valve according to Modification 4.
• FIG. FIG. 7 is a perspective view showing a flow path switching valve according to modification 5;
• FIG. 7 is a block diagram showing one switching mode of a flow path switching valve according to modification 5; 12 is a block diagram showing another switching mode of the flow path switching valve according to Modification 5.
• FIG. 7 is a perspective view showing a flow path switching valve according to modification 6.
• FIG. 7 is a block diagram showing one switching mode of a flow path switching valve according to modification 6;
• FIG. 7 is a block diagram showing another switching mode of the flow path switching valve according to Modification 6.
• FIG. 7 is a perspective view showing a flow path switching valve according to Modification Example 7;
• FIG. 1 is a perspective view showing the overall configuration of a flow path switching valve 10 according to an embodiment of the present disclosure.
• this flow path switching valve 10 three valve units 20 are connected in the left-right direction, and other valve units 20 are stacked below each valve unit 20.
• FIG. 4 is a partially cutaway perspective view showing a flow path switching valve in which two valve units 20 are stacked one on top of the other and two valve bodies are rotated by one rotation drive unit. This FIG. 4 corresponds to the two upper and lower valve units 20 extracted from FIG. 1. 5 and 6 are partially cutaway perspective views showing one valve unit 20.
• FIG. 4 corresponds to the two upper and lower valve units 20 extracted from FIG. 1.
• 5 and 6 are partially cutaway perspective views showing one valve unit 20.
• the flow path switching valve 10 is used, for example, as a rotary type three-way valve (FIG. 5) or four-way valve (FIGS. 13 and 14) that switches the flow path of fluid flowing in the engine room of an automobile. As shown in FIGS. 4 to 8, the flow path switching valve 10 includes a valve unit 20 and a rotation drive section 18.
• the valve unit 20 includes a valve body 14 , a valve body 16 , a first flow path 21 , a second flow path 22 , and a third flow path 23 .
• the valve unit 20 is configured such that, for example, a state in which the first flow path 21 and the third flow path 23 communicate with each other, a state in which the second flow path 22 and the third flow path 23 communicate with each other, and a state in which the first flow path 22 and the third flow path 23 communicate with each other, and a state in which the first flow path 21 and the third flow path 23 communicate with each other.
• the passage 21, the second flow passage 22, and the third flow passage 23 are three-way valves that switch between states in which they are not in communication with each other.
• a valve body 14 is made of, for example, synthetic resin, and has a valve chamber 12 formed therein.
• the upper side of the valve chamber 12 is open, and a valve body 16 and a sealing part 38, which will be described later, are inserted from above.
• a first inlet/outlet 31 and a second inlet/outlet 32 which face each other and allow fluid to enter and exit, are formed on a wall surface forming the valve chamber 12, for example.
• the first inlet/outlet 31 is formed on the rear wall of the valve chamber 12
• the second inlet/outlet 32 is formed on the front wall of the valve chamber 12 . That is, the first inlet/outlet 31 and the second inlet/outlet 32 face each other in the front-rear direction of the valve chamber 12.
• a third inlet/outlet 33 is formed at the bottom of the valve chamber 12 .
• valve body 4, FIG. 5, FIG. 9, and FIG. 10, the valve body 16 is a ball-shaped member made of, for example, synthetic resin, and is rotatably arranged within the valve chamber 12.
• An insertion hole 16A into which the valve shaft 28 of the rotation drive unit 18 is inserted is formed in the upper part of the valve body 16.
• the valve shaft 28 and the insertion hole 16A are engaged with each other around the axial direction of the valve shaft 28, so that the rotation of the valve shaft 28 is transmitted to the valve body 16.
• the insertion hole 16A penetrates, for example, to the flow path 36 of the valve body 16.
• a flow path (internal flow path) 36 is provided inside the valve body 16 in order to selectively switch the communication state of the valve body 16 .
• the valve body 16 is formed with a horizontal hole 36A that communicates with the flow path 36 from its outer periphery (side part).
• the valve body 16 is formed with a pilot hole 36C that communicates with the flow path 36 from its outer periphery (lower portion).
• the flow path 36 communicates from the side hole 36A to the pilot hole 36C.
• the horizontal hole 36A can face the first inlet/outlet 31 or the second inlet/outlet 32.
• the valve body 16 is in close contact with a seat member 40, which will be described later, and is closed.
• the flow path 36 of the valve body 16 is formed with a rib 16B that extends in the direction (vertical direction) toward the third inlet/outlet 33.
• This rib 16B is, for example, a thin plate-like projection, and is formed, for example, on the inner wall of the side hole 36A in the flow path 36 of the valve body 16 on the back side.
• sealing portions 38 are provided between the valve body 16 and the first inlet/outlet 31 and the second inlet/outlet 32 to seal the space between them.
• the sealing portion 38 includes, for example, a sheet member 40 and an O-ring 42.
• the sheet member 40 is made of synthetic resin, for example, and is formed in an annular shape with openings corresponding to the first inlet/outlet 31 and the second inlet/outlet 32. This sheet member 40 is arranged around the first inlet/outlet 31 and the second inlet/outlet 32 on the inner wall surface of the valve body 14 (the front and rear wall surfaces of the valve chamber 12), respectively.
• the valve body 16 is sandwiched between two seat members 40 and is arranged so as to be rotatable and slidable while contacting each seat member 40.
• the space between the seat member 40 and the valve body 14 is sealed airtightly or watertightly by an O-ring 42, respectively.
• the O-ring 42 is attached to, for example, an O-ring groove (not shown) formed in the sheet member 40.
• PPS polyphenylene sulfide
• PTFE fluororesin
• synthetic rubber can be used for the O-ring 42.
• the rotary drive unit 18 is connected to the valve unit 20, and the communication state of the first inlet/outlet 31, the second inlet/outlet 32, and the third inlet/outlet 33 is selectively switched through the flow path of the valve body 16.
• This is a device that rotates the valve body 16 as shown in FIG.
• the rotation drive section 18 is arranged above the valve body 14 in the upper valve unit 20. Specifically, on the upper valve body 14, for example, a bracket 24 is fixed, and the rotation drive unit 18 is fixed on the bracket 24 using, for example, a screw 26 (FIG. 1).
• the upward opening in the valve chamber 12 of the upper valve body 14 (FIG. 5) is closed, for example, by a bracket 24 (FIG. 12).
• the bracket 24 has a shape that closes the opening of the valve chamber 12.
• the bracket 24 is welded to the inside of the opening of the valve chamber 12 in a spigot-fitted state.
• the bracket 24 is provided with a protrusion 30.
• This convex portion 30 faces or abuts the peripheral edge of the valve chamber 12 in the valve body 14 .
• the protrusion 30 may be a melting margin. Further, the convex portion 30 may be provided on the valve body 14 instead of the bracket 24.
• the rotation drive unit 18 is, for example, a geared motor.
• the rotation drive unit 18 is provided with a connector 50 to which wiring for communication with the control unit and power supply is connected, for example.
• a valve shaft 28 serving as an output shaft is coupled to the rotation drive section 18 .
• the valve shaft 28 is inserted into a through hole 24A formed in the bracket 24.
• An O-ring 29 or an X-ring (not shown) is attached to the valve stem 28. This O-ring 29 ensures watertightness between the valve stem 28 and the through hole 24A. Further, the lower end of the valve shaft 28 is inserted into the insertion hole 16A (FIG. 5) of the valve body 16.
• first flow path 21, the second flow path 22, and the third flow path 23 are, for example, pipe portions integrally formed with the valve body 14.
• the first flow path 21 can also be referred to as a first port, the second flow path 22 as a second port, and the third flow path 23 as a third port.
• the first flow path 21 is open at both ends, for example, and communicates with the first inlet/outlet 31 of the valve chamber 12 .
• This first flow path 21 extends linearly, for example, in the left-right direction.
• the first inlet/outlet 31 is connected to the middle of the first flow path 21 . Thereby, the first flow path 21 and the first inlet/outlet 31 are formed into a substantially T-shape in plan view (see FIGS. 13 and 14).
• the second flow path 22 is arranged parallel to the first flow path 21 with the valve body 14 in between, and is open at both ends, for example, and communicates with the second inlet/outlet 32 .
• the second flow path 22 extends linearly, for example, in the left-right direction.
• the second inlet/outlet 32 is connected to the middle of the second flow path 22 . Thereby, the second flow path 22 and the second inlet/outlet 32 are formed into a substantially T-shape in plan view (see FIGS. 13 and 14).
• female joints 51 and 52 are provided at one ends of the first flow path 21 and the second flow path 22, respectively.
• male joints 61 and 62 are provided at the other ends of the first flow path 21 and the second flow path 22, respectively.
• the male joints 61 and 62 are configured to be connectable to the female joints 51 and 52.
• Annular grooves 61A, 62A are formed on the outer peripheries of the male joints 61, 62.
• a pair of arc-shaped slits 51A, 52A are formed in the female joints 51, 52, for example.
• the male joints 61 and 62 are fitted into the female joints 51 and 52, respectively, and are prevented from coming off by fitting the clips 34 into the grooves 61A and 62A through the slits 51A and 52A.
• It has a structure.
• the connection portion of each joint is water-tightened by, for example, an O-ring 66.
• a first A protrusion 71 is provided at the connecting portion of the first flow path 21 with the first inlet/outlet 31 .
• the first protrusion 71 is, for example, an arcuate protrusion formed along the opening of the first inlet/outlet 31 to the first flow path 21 .
• the range of the first protrusion 71 is, for example, less than half the circumference of the inner peripheral surface of the first flow path 21 on the first inlet/outlet 31 side.
• One side of the first protrusion 71 in the left-right direction is a concave surface that is an extension of a part of the inner wall of the first flow path 21 .
• the first protrusion 71 is provided on the left side of the first inlet/outlet 31. Note that the first protrusion 71 may be provided on the right side of the first inlet/outlet 31, or may be provided on both left and right sides of the first protrusion 71.
• a second protrusion 72 that protrudes from the second inlet/outlet 32 side toward the inside of the second flow path 22 is provided at the connection portion of the second flow path 22 with the second inlet/outlet 32 .
• the second protrusion 72 is, for example, an arcuate protrusion formed along the opening of the second inlet/outlet 32 to the second flow path 22 .
• the range of the second protrusion 72 is, for example, less than half the circumference of the inner peripheral surface of the second flow path 22 on the second inlet/outlet 32 side.
• One side of the second protrusion 72 in the left-right direction is a concave surface that is an extension of a part of the inner wall of the second flow path 22.
• the second protrusion 72 is provided on the left side of the second inlet/outlet 32. Note that the second protrusion 72 may be provided on the right side of the second inlet/outlet 32, or may be provided on both left and right sides of the second protrusion 72.
• a sub flow path 46 is provided at a position facing the first inlet/outlet 31 and is closed with a lid 44. It's okay.
• the space between the lid body 44 and the end of the sub-channel 46 is sealed by welding or water-tight by a sealing member such as an O-ring 48 .
• a storage tank 54 can be connected to the sub-channel 46 .
• the valve units 20 are stacked one above the other, there are two sub-flow passages 46, one above the other. It is also possible to connect these two sub-channels 46 to a storage tank 54 provided with two connection ports (FIG. 2).
• the storage tank 54 may have two storage chambers partitioned off from each other, corresponding to each connection port. This allows the same fluid to be stored separately at different temperatures.
• pumps 81 and 82 may be attached to the female joint 51 or male joint 61 of the first flow path 21 at the end of the flow path switching valve 10 and the female joint 52 or female joint 62 of the second flow path 22 at the end, respectively. Can be done.
• the pump 81 is attached to the female joint 51 (see FIG. 2) of the first flow path 21 in the upper valve unit 20.
• a pump 82 is attached to the female joint 52 of the second flow path 22 in the upper valve unit 20.
• Pump 81 has a joint 91 that serves as an inlet and outlet for fluid.
• the pump 82 also has a joint 92 that serves as an inlet and outlet for fluid.
• the pump 81 can supply fluid from another device to the first channel 21 or supply fluid in the first channel 21 to another device via the joint 91. Further, the pump 82 can supply fluid from another device to the second flow path 22 or supply fluid in the second flow path 22 to another device via the joint 92.
• the third flow path 23 communicates with the third inlet/outlet 33, and is open on the side opposite to the third inlet/outlet 33.
• the third flow path 23 has a bent portion 23A.
• the third entrance/exit 33 is located above the bent portion 23A.
• the end of the third flow path 23 on the opening side is located, for example, in front of the bent portion 23A, and protrudes forward from the second flow path 22, for example.
• a male joint 64 is provided, which can be connected to piping to other equipment.
• a spherical recess 23B is provided at a portion of the bent portion 23A of the third flow path 23 facing the third inlet/outlet 33, that is, below the third inlet/outlet 33. It is being The recess 23B is formed in a substantially hemispherical shape. The recessed portion 23B is recessed below the bottom 23C of the horizontal flow path on the front side of the bent portion 23A. Thereby, a part of the fluid that has entered the third flow path 23 from the third inlet/outlet 33 once falls into the recess 23B and then enters the lateral flow path of the third flow path 23.
• a through hole 23D is formed at the bottom of the recess 23B.
• the valve shaft 58 can be passed through the through hole 23D (FIG. 4). Water is cut off between the valve shaft 58 and the through hole 23D by an O-ring 60.
• the structure is such that the bottom of the recess 23B does not have the through hole 23D, for example, like the lower valve unit 20 in FIG.
• the through hole 23D it may be configured to be closed with a separate member (for example, the closing portion 86).
• the closure part 86 may include a temperature sensor 84.
• the temperature sensor 84 is supported by, for example, the closing portion 86 and is disposed such that its tip is located within the third flow path 23 .
• an O-ring 88 is attached to the closing portion 86. This O-ring 88 ensures watertightness between the closing portion 86 and the through hole 23D. By using the temperature sensor 84, the temperature within the third flow path 23 can be accurately measured.
• FIGS. 1 and 4 in this embodiment, another valve unit 20 can be stacked and connected to the side opposite to the rotary drive section 18 of one valve unit 20.
• a portion of the upper valve unit 20 that overlaps with the lower valve unit 20 is a lid 68 that closes the valve chamber 12 of the lower valve unit 20.
• This closing structure is generally similar to the closing structure of the valve chamber 12 by the bracket 24 in FIG. It is welded in this state.
• one valve unit 20 is connected to another valve unit 20 in an overlapping manner, and the two valve bodies 16 in the two valve units 20 are rotated by one rotation drive unit 18.
• the valve shaft 28 of the upper valve unit 20 and the valve shaft 58 of the lower valve unit 20 are connected by a connecting shaft 56.
• the connecting shaft 56 passes through the inside of the upper valve body 16 and the vertical flow path of the third flow path 23, and connects the upper and lower valve shafts 28, 58.
• valve units 20 may each be provided with a rotation drive unit 18, and the rotation of the valve body 16 may be controlled separately.
• the distance W between the centers of the end of the first flow path 21 and the end of the second flow path 22 in one valve unit 20 is the state in which one valve unit 20 is connected to another valve unit 20 in an overlapping manner.
• may be equal to the center-to-center distance H between the ends of the first flow path 21 in the overlapping direction. In other words, W H may be satisfied.
• FIG. 4 in the flow path switching valve 10 according to the present embodiment, by rotating the valve body 16 with the rotation drive unit 18, the first inlet/outlet 31, the second inlet/outlet 32, and the third inlet/outlet of the valve chamber 12 are 33 can be switched, for example, through the flow path 36 of the valve body 16. Since the first inlet/outlet 31 and the second inlet/outlet 32 face each other with the valve chamber 12 in between, and one horizontal hole 36A is formed in the valve body 16, the flow path can be switched by rotating the valve body 16 by 180 degrees. This can be done by
• first flow path 21 and the second flow path 22 of one valve unit 20 can be connected to the first flow path 21 and the second flow path 22 of the other valve unit 20, respectively, the valve unit 20 combinations, flow path switching valves with various specifications can be easily realized.
• female joints 51 and 52 are provided at one end of the first flow path 21 and second flow path 22, respectively, and male joints 61 and 62 are provided at the other ends of the first flow path 21 and the second flow path 22, respectively. It is being The male joints 61 and 62 are connectable to the female joints 51 and 52, respectively. Therefore, for example, the first passages 21 and the second passages 22 of one valve unit 20 and another valve unit 20 can be easily connected.
• the fluid that has flowed into the third flow path 23 from the valve chamber 12 through the third inlet/outlet 33 passes through the bent portion 23A.
• a spherical recess 23B is provided at a portion of the bending portion 23A of the third flow path 23 that faces the third inlet/outlet 33, compared to a configuration in which the recess 23B is not provided at that portion and is simply bent, Fluid resistance is reduced. Therefore, pressure loss in the third flow path 23 can be suppressed.
• the first protrusion 71 when the first protrusion 71 is provided at the connection part of the first flow path 21 with the first inlet/outlet 31 of the valve chamber 12, The first protrusion 71 disturbs the flow of fluid in the first channel 21 . Thereby, the fluid flowing through the first flow path 21 can be guided to the first inlet/outlet 31.
• the second protrusion 72 when the second protrusion 72 is provided at the connection part of the second flow path 22 with the second inlet/outlet 32 of the valve chamber 12, the second protrusion 72 allows the flow of fluid in the second flow path 22. By disturbing the flow, the fluid flowing through the second flow path 22 can be guided to the second inlet/outlet 32. In this way, the inflow of fluid from the first flow path 21 and the second flow path 22 into the valve chamber 12 can be promoted.
• valve units 20 can be freely combined. You can increase the degree.
• one valve unit 20 and another valve unit 20 may be overlapped.
• a separate part for closing the valve chamber 12 of the other valve unit 20 is not required. Therefore, it is possible to suppress an increase in the number of parts and to improve workability when connecting the valve units 20 in a stacked manner.
• the valve unit 20 is not limited to a three-way valve, and may be, for example, a four-way valve as shown in FIGS. 13 and 14.
• the valve body 16 is formed with a horizontal hole 36B that joins the center of the horizontal hole 36A from its outer periphery (side part), for example, in a direction perpendicular to the rotation axis O1 of the valve body 16 and perpendicular to the horizontal hole 36A. There is. By rotating the valve body 16 by 90 degrees, it is possible to switch between a state in which the first inlet/outlet 31 and the third inlet/outlet 33 communicate with each other and a state in which the second inlet/outlet 32 and the third inlet/outlet 33 communicate with each other.
• Modification 2 15 and 16 in the flow path switching valve 10 according to this modification, the structures of the female joints 51, 52 and the male joints 61, 62 are different from the structures shown in FIGS. 1 to 8. 15 and 16 show the same flow path switching valve 10 from a different perspective.
• the pipe portion constituting the first flow path 21 is configured separately from the valve body 14 in the state of a component, and is coupled to the valve body 14 by, for example, welding during assembly.
• the pipe portion constituting the second flow path 22 is constructed integrally with the valve body 14 as a part.
• valve shaft 28 inserted into the valve body 16 serves as the output shaft of the rotary drive section 18. It is separate from the stem 98. The lower end of the stem 98 is inserted into the valve shaft 28. Rotation of the stem 98 is transmitted to the valve shaft 28.
• the valve shaft 28 can be shared with the valve shaft 58 of another valve unit 20 (lower valve unit).
• the pipe portion constituting the first flow path 21 is configured separately from the valve body 14 in the state of parts, and when assembled, It is connected to the valve body 14.
• the O-ring 42 is connected to an O-ring groove provided in the pipe part constituting the first flow path 21. , are respectively attached to O-ring grooves provided in the valve body 14.
• a flow path switching valve 10 is configured by connecting two valve unit 20 assemblies according to modification 2 (FIGS. 15 and 16).
• the assembly of the valve unit 20 is constructed by stacking two valve units 20.
• the assembly of two valve units 20 will be referred to as a valve unit 20(I) and a valve unit 20(II) in order from the left side of FIG. 18.
• a portion of the valve unit 20(I) is shown with a chain line, and a portion of the valve unit 20(II) is shown with a chain double-dot line.
• the valve unit 20(I) is attached to the valve unit 20(II) by being rotated by 90 degrees. Accordingly, the positions of the rotary drive parts 18 are also different from each other.
• the third flow path is designated as port G.
• a third flow path is defined as a port H on the side of the valve unit 20(I) opposite to the rotation drive unit 18 side.
• FIGS. 19 and 20 two switching modes shown in FIGS. 19 and 20, for example, can be realized.
• port A communicates with port E and port B communicates with port G.
• port C communicates with port H
• port D communicates with port F.
• Ports A and H, ports B and E, ports C and F, and ports D and G are each blocked. Other unused ports are also blocked.
• a series flow path (series circuit) can be formed through the port A and back to port A.
• a heat exchanger, evaporator, capacitor, battery, motor, etc. can be arranged in the external flow path.
• port A communicates with port H
• port B communicates with port E
• port C communicates with port F
• port D communicates with port G.
• Ports A and E, ports B and G, ports C and H, and ports D and F are each blocked. Other unused ports are also blocked.
• a series flow path (series circuit) can be formed through the port A and back to port A.
• a flow path switching valve 10 is configured by connecting three valve unit 20 assemblies according to modification 2 (FIGS. 15 and 16).
• the assembly of the valve unit 20 is constructed by stacking two valve units 20.
• the two valve units 20 have their first flow paths connected in series and their second flow paths connected in series, and in order from the left side of FIG. 21, the valve units 20(I), Let it be a valve unit 20 (II).
• the third valve unit 20 is referred to as valve unit 20(III).
• valve unit 20(I) A portion of the valve unit 20(I) is shown by a thick dashed-dotted line, a portion of the valve unit 20(II) is shown by a dashed-two dotted line, and a portion of the valve unit 20(III) is shown by a thin dashed-dotted line.
• Valve unit 20(III) is connected to the front surfaces of valve unit 20(I) and valve unit 20(II) in FIG. 21. Specifically, the first flow path and the second flow path of the valve unit 20(III) are connected to the third flow path of the valve unit 20(I) and the valve unit 20(II).
• the first flow path is port E
• the second flow path is port G
• the third flow path is port J.
• the first flow path is designated as port F
• the second flow path is designated as port H
• the third flow path is designated as port K.
• FIGS. 22 and 23 two switching modes shown in FIGS. 22 and 23, for example, can be realized.
• port A communicates with port E and port B communicates with port G.
• port C communicates with port F
• port D communicates with port H.
• port G communicates with port J
• port H communicates with port K.
• Ports A and G, ports B and E, ports C and H, ports D and F, ports E and J, and ports F and K are each blocked. Other unused ports are also blocked.
• an external flow path is formed that connects ports A and C, ports B and D, ports E and F, ports G and H, and ports J and K, the ports will pass through ports A, E, F, and C.
• a series flow path (series circuit) returning to A can be constructed.
• a series flow path (series circuit) returning to port B through ports B, G, J, K, H, and D can be configured.
• port A communicates with port G
• port B communicates with port E
• Port E also communicates with port J
• port C communicates with port H
• port D communicates with port F
• Port F also communicates with port K.
• Ports A and E, ports B and G, ports C and F, ports D and H, ports G and J, and ports H and K are each blocked. Also, unused ports are blocked.
• a series flow path (series circuit) returning to A can be constructed.
• a series flow path (series circuit) returning to port B through ports B, E, J, K, F, and D can be configured.
• Modification 6 In FIG. 24, the flow path switching valve 10 according to the present modification is obtained by rotating the front valve unit 20 (III) by 90 degrees in modification 5 (FIG. 21). Ports A to D are the same as in the fifth modification.
• the first flow path is designated as port G
• the second flow path is designated as port H
• the third flow path is designated as port J.
• the first flow path is designated as port E
• the second flow path is designated as port F
• the third flow path is designated as port K.
• FIGS. 25 and 26 two switching modes shown in FIGS. 25 and 26, for example, can be realized.
• port A communicates with port E.
• Port E also communicates with port K.
• Port B communicates with port G.
• Port G also communicates with port J.
• Ports A and G, ports B and E, ports C and F, ports D and H, ports F and K, and ports H and J are each blocked.
• ports D and F communicate with each other and ports C and H communicate with each other, the flow through each path is blocked by the valve unit (III). Other unused ports are also blocked.
• ports A and C, ports B and D, ports C and J, ports D and K, ports E and F, and ports G and H ports A, E, K, A series flow path (series circuit) returning to port A through D, B, G, J, and C can be configured.
• port A communicates with port G
• port B communicates with port E
• port C communicates with port F
• port D communicates with port H.
• Ports A and E, ports B and G, ports C and H, ports D and F, ports E and K, ports F and K, ports G and J, and ports H and J are each blocked. Other unused ports are also blocked.
• ports A, G, H, A series flow path (series circuit) returning to port A through D, B, E, F, and C can be configured.
• a flow path switching valve 10 is configured by connecting three valve unit 20 assemblies according to modification 2 (FIGS. 15 and 16).
• the assembly of the valve unit 20 is constructed by stacking two valve units 20.
• the assembly of two valve units 20 will be referred to as a valve unit 20(I), a valve unit 20(II), and a valve unit 20(III) in order from the left side of FIG. 18.
• the valve unit 20(II) is attached to the valve units 20(I) and 20(III) by being rotated by 180 degrees.
• valve units 20 By combining a plurality of valve units 20 in this way, various circuits can be realized while being compact.
• Female joints 51 and 52 are provided at one end of the first flow path 21 and the second flow path 22, respectively, and a male joint having a structure connectable to the female joints 51 and 52 is provided at the other end of the first flow path 21 and the second flow path 22.
• the joints 61 and 62 are respectively provided, a configuration without such a joint structure may be used.
• the recess 23B is provided in the bent portion 23A of the third flow path 23, a configuration may be adopted in which such a recess 23B is not provided.
• the rib 16B is formed in the flow path 36 of the valve body 16, a structure without such a rib 16B may be used.
• a first protrusion 71 is provided at the connection part with the first inlet/outlet 31 in the first flow path 21, and a second protrusion 72 is provided in the connection part with the second inlet/outlet 32 in the second flow path 22.
• first protrusion 71 or the second protrusion 72 may be provided, or the first protrusion 71 and the second protrusion 72 may not be provided.
• valve unit 20 can be stacked and connected to the side opposite to the rotary drive unit 18 of one valve unit 20, other members may be interposed between the two valve units 20. . Further, such a connection may not be possible.

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• 2023
  • 2023-06-30 WO PCT/JP2023/024520 patent/WO2024024399A1/ja not_active Ceased
  • 2023-06-30 EP EP23846132.1A patent/EP4563852A1/en active Pending
  • 2023-06-30 JP JP2024536883A patent/JP7807115B2/ja active Active
  • 2023-06-30 CN CN202380017832.1A patent/CN119546892A/zh active Pending
• 2026
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