JP2016188693A - Refrigerant control valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a downsized refrigerant control valve device.SOLUTION: A refrigerant control valve device includes: a housing A that has an introduction port PS for receiving a refrigerant from an internal combustion engine E and a discharge portion P1 cylindrically projecting to send out the refrigerant; and a rotor B accommodated in the housing rotatably around a rotating axis X. The discharge portion P1 includes an annular seal 15a abutting on an outer surface of the rotor B. The rotor B includes a wall portion 23 serving as a spherical outer surface, and while passing through a center T of the wall portion 23, a center line Q1 of the discharge portion P1 is inclined to a direction in which an end on the projecting side of the discharge portion P1 separates from the introduction port PS.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a refrigerant control valve device in which a rotor for controlling a refrigerant flow is rotatably accommodated in a housing having a discharge port.

  As a refrigerant control valve device, Patent Literature 1 discloses a technique in which a rotor (in the literature, a cross-section adjusting member) is rotatably disposed inside a housing. In Patent Document 1, the opening formed in the outer periphery of the rotor overlaps with the port formed in the housing (in the document, the opening of the connection pipe), whereby the refrigerant flows between the inside of the rotor and the port. Is configured to allow.

  In Patent Document 1, the rotor is formed in a spherical shape, and an opening that opens in a direction along the rotation axis and a plurality of openings that correspond to the ports on the spherical outer wall surface are formed.

  Patent Document 2 discloses a technique in which a cylindrical rotor (a valve body in the document) is rotatably arranged inside a housing. In the apparatus of Patent Document 2, the housing includes first and second fluid passages at positions overlapping with the rotation axis of the rotor, and a third flow path that opens in the direction along the rotation axis. ing. Furthermore, an opening that opens to the rotor in a direction along the rotation axis so as to always communicate with the third flow path and an opening for controlling the flow of the refrigerant with respect to the first and second fluid passages are formed. Yes.

  From this configuration, by setting the rotation posture of the rotor, the state in which one of the first and second fluid passages is closed, the state in which the refrigerant flows through the other, the amount of the refrigerant flowing in the two fluid passages in the state in which the first fluid passage is closed It is configured to create a squeezed state.

Special table 2010-507762 JP 2002-98245 A

  Considering shortening of the rotor in the direction of the axis of rotation for downsizing of the refrigerant control valve device, a space for disposing the discharge port on the outer surface of the housing as shown in Patent Document 1 or Patent Document 2 It is necessary to ensure.

  However, considering the configuration in which the discharge port has a large diameter and is formed in a posture orthogonal to the rotation axis, the housing dimension in the direction along the rotation axis of the rotor corresponds to the diameter of the discharge port. It has been considered that the refrigerant control valve device becomes longer and larger. For these reasons, it has been desired to shorten the housing in the direction along the rotational axis of the rotor.

  That is, such a refrigerant control valve device is required to be downsized.

The features of the present invention are: an inlet that receives a refrigerant from an internal combustion engine; and a housing that includes a discharge portion that protrudes to send out the refrigerant;
A rotor having a wall having a spherical outer surface and rotating around a rotation axis extending perpendicularly to the introduction port in the housing;
An annular seal that is provided in the discharge unit and abuts against the outer surface of the rotor;
The rotor includes a receiving portion that receives the refrigerant from the inlet, a storage chamber that stores the received refrigerant, and a hole portion that controls the flow of the refrigerant and sends the refrigerant to the discharge portion.
A center line of the discharge part passes through the center of the sphere of the rotor, and a discharge side end of the discharge part is inclined in a direction away from the introduction port.

For example, assuming that the center line of the discharge part is formed in a posture orthogonal to the rotation axis, in this assumption, the length corresponding to the diameter of the discharge part in the direction along the rotation axis is given to the housing. It is necessary to ensure, and there is a face that it is difficult to shorten the dimensions of the housing.
In comparison with this, in the feature of the present invention, the center line of the discharge portion is inclined with respect to the rotation axis, and the inclination direction is inclined in a direction in which the discharge side end portion of the discharge portion is separated from the introduction port. Therefore, it is possible to displace a region near the introduction port in the outer periphery of the opening of the discharge unit in a direction away from the introduction port.
As a result, a miniaturized refrigerant control valve device was configured.

The present invention includes an inlet that protrudes in a cylindrical shape so as to receive a refrigerant from an internal combustion engine, and a housing that includes a discharge portion that sends out the refrigerant,
A rotor having a spherical outer surface and rotating around a rotation axis extending perpendicularly to the discharge part inside the housing;
An annular seal provided at the introduction port and in contact with the outer surface of the rotor;
The rotor includes a receiving portion that receives the refrigerant from the inlet, a storage chamber that stores the received refrigerant, and a hole portion that controls the flow of the refrigerant and sends the refrigerant to the discharge portion.
A center line of the discharge part passes through the center of the sphere of the rotor, and an introduction side end of the introduction port is inclined in a direction away from the discharge part.

For example, assuming that the center line of the introduction portion is formed in a posture orthogonal to the rotation axis, in this assumption, the length corresponding to the diameter of the introduction portion in the direction along the rotation axis is given to the housing. It is necessary to ensure, and there is a face that it is difficult to shorten the dimensions of the housing.
In comparison with this, in the feature of the present invention, the center line of the introduction portion is inclined with respect to the rotation axis, and this inclination direction is inclined in a direction in which the introduction side end portion of the introduction portion is separated from the introduction port. Therefore, it is possible to displace a region close to the discharge portion in the outer periphery of the opening of the introduction portion in a direction away from the discharge portion.
As a result, a miniaturized refrigerant control valve device was configured.

  The present invention provides a cylindrical first inner wall portion that is continuous in a direction along the rotation axis from the receiving portion, and a direction in which the first inner wall portion is smoothly connected to the first inner wall portion. And a curved second inner wall portion extending in a straight line.

  According to this, when the refrigerant flows from the receiving portion to the accommodation chamber, the refrigerant flows linearly along the first inner wall portion and curved along the second inner wall surface. There is no invitation. Thereby, the flow of the refrigerant from the internal space to the discharge part becomes smooth.

  In the present invention, the rotor may include a second inner wall surface parallel to the spherical outer surface.

  When a rotor is manufactured from a resin using a mold, if the thickness of the resin is not uniform, the portion having a large thickness may be contracted and the rotor may be distorted. On the other hand, when the inner surface parallel to the spherical outer surface is formed, the rotor is not distorted even if the rotor is formed of resin using a mold.

  In the present invention, the annular seal may be biased toward the wall portion of the outer surface of the rotor.

  Thus, the closed state of the valve device can be favorably maintained by bringing the seal into close contact with the outer surface of the rotor by the urging force.

It is a figure which shows an engine cooling system. It is a longitudinal cross-sectional view of the refrigerant | coolant control valve apparatus with which cooling water is sent to a 2nd discharge port. It is a longitudinal cross-sectional view of the refrigerant | coolant control valve apparatus with which cooling water is sent to a 1st discharge port. It is a cross-sectional view of a refrigerant control valve device. It is an expanded view of the rotor in a fully open posture. It is an expanded view of the rotor in a 2nd open posture. It is an expanded view of the rotor in a 1st open attitude | position. It is an expanded view of the rotor in a fully closed posture. It is a perspective view of a rotor. It is sectional drawing which shows the relationship between a virtual outer wall surface and a rib part. It is sectional drawing explaining the relationship between a rotor and a 1st seal | sticker. It is a figure which shows the engine cooling system of 2nd Embodiment. It is a longitudinal cross-sectional view of the refrigerant | coolant control valve apparatus with which cooling water is sent to a 2nd introduction port. It is a cross-sectional view of a refrigerant control valve device. It is an expanded view of the rotor in a fully open posture. It is an expanded view of the rotor in a 2nd open posture. It is an expanded view of the rotor in a 1st open attitude | position. It is an expanded view of the rotor in a fully closed posture. It is a perspective view of a rotor. It is sectional drawing of the refrigerant | coolant control valve apparatus of another embodiment (a).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment: Basic Configuration]
As shown in FIG. 1, the refrigerant control valve device V includes an introduction port PS that is provided in a vehicle and receives cooling water (an example of a refrigerant) from an engine E as an internal combustion engine, and a radiator through a radiator hose 1. 1st discharge port P1 (an example of a discharge part) which sends to R, and 2nd discharge port P2 (an example of a discharge part) which sends cooling water to the heater core H via the heater hose 2 are provided. The engine E has a cylinder head portion Ea and a cylinder block portion Eb, and cooling water is supplied from the cylinder head portion Ea to the introduction port PS of the refrigerant control valve device V. Further, the cooling water supplied to the radiator R and the cooling water supplied to the heater core H are sent from the inlet valve 3 to the water pump 4 (W / P), and from the water pump 4 to the cylinder block portion Eb of the engine E. Returned to

  In the first embodiment, cooling water from the refrigerant control valve device V is supplied to the radiator R and the heater core H. For example, for heat exchange such as engine oil or fluid of an automatic transmission. You may use so that it may supply. When used in this way, a third discharge port may be formed for the refrigerant control valve device V.

  As shown in FIGS. 2 to 4, the refrigerant control valve device V includes a resin-made housing A and a resin-made spherical outer wall that is housed so as to be rotatable about the rotation axis X with respect to the inside of the housing A. A rotor B having a portion 23 and an electric control unit C that rotationally drives the rotor B are provided. The refrigerant control valve device V supplies cooling water (an example of a refrigerant) of the engine E to the radiator R or at least one of the heater core H as a device that requires heat, and either the radiator R or the heater core H. It is configured to create a state in which no supply is made. The rotation axis X is set in a posture orthogonal to the opening surface of the introduction port PS from the center position of the introduction port PS.

〔housing〕
The housing A includes a lid-like housing plate 11 so as to close one end of the cylindrical housing body 10, and an introduction port PS is formed on the open side of the housing body 10.

  The first discharge port P1 includes a cylindrical first sleeve portion 13 (an example of a first member) to which the radiator hose 1 is connected, and a first flange portion 14 formed in a bowl shape on the outer periphery of the first sleeve portion 13. And a first seal portion 15 that is externally fitted to the inner end of the first sleeve portion 13.

  The outer periphery of the first flange portion 14 is connected to the housing body 10 by welding over the entire circumference. The first seal portion 15 includes an annular first seal 15a, a first packing 15b, a first intermediate ring 15c, and a first spring 15d. These are provided in a state of being fitted on the inner end position of the first sleeve portion 13. Instead of welding, the first flange portion 14 may be bonded to the housing body 10 with an adhesive.

  When the rotor B is set in a posture to close the first discharge port P1, the first seal portion 15 is in close contact with the spherical outer wall portion 23 so that the first discharge port P1 and the rotor B are in close contact with each other. It functions to block the flow of cooling water between the outer wall portion 23 and the outer wall portion 23.

  The first seal 15a is formed in an annular shape with a flexible resin such as PTFE (polytetrafluoroethylene). The first seal 15 a is movable along the first center line Q <b> 1 of the first sleeve portion 13 in a state of being fitted on the first sleeve portion 13. The 1st packing 15b is cyclic | annular formed with flexible resin, and the lip part which contacts the outer peripheral surface of the 1st sleeve part 13 is formed in the inner peripheral side. The first packing 15b is movable along the first center line Q1 of the first sleeve portion 13.

  The first intermediate ring 15c is formed of a highly rigid metal or resin, and is disposed at a position where it is fitted around the first packing 15b. The first spring 15d is made of a metal material, and is disposed at a position where one end contacts the first flange portion 14 and the other end contacts the first intermediate ring 15c. The first seal 15a contacts the outer wall portion 23 of the rotor B by the urging force of the first spring 15d.

  In particular, the first center line Q1 serving as the center of the first sleeve portion 13 is inclined with respect to the rotation axis X. The first center line Q1 intersects the rotational axis X, and this intersection position becomes the wall center T, and this wall center T coincides with the center of the spherical outer wall portion 23 of the rotor B. The inclination direction of the first center line Q1 is such that the outer end side of the first sleeve portion 13 is separated from the rotation axis X and further away from the introduction port PS as the cooling water flow in the first sleeve portion 13 becomes downstream. Is set to

  The second discharge port P2 includes a second sleeve portion 17 (an example of a second member) to which the heater hose 2 is connected, a second flange portion 18 formed in a bowl shape on the outer periphery of the second sleeve portion 17, and a second A second seal portion 19 that is externally fitted to the inner end of the two sleeve portion 17 is provided.

  The outer periphery of the second flange 18 part is connected to the housing body 10 by welding over the entire circumference. The second seal portion 19 includes an annular second seal 19a, a second packing 19b, a second intermediate ring 19c, and a second spring 19d. These are provided in a state of being fitted on the inner end position of the second sleeve portion 17. Instead of welding, the second flange portion 18 may be bonded to the housing body 10 with an adhesive.

  When the rotor B is set in a posture to close the second discharge port P2, the second seal portion 19 is in close contact with the spherical outer wall portion 23, so that the second discharge port P2 and the rotor B are in close contact with each other. It functions to block the flow of cooling water between the outer wall portion 23 and the outer wall portion 23.

  The second seal 19a, the second packing 19b, the second intermediate ring 19c, and the second spring 19d constituting the second seal portion 19 are made of the same material as the corresponding member in the first seal portion 15. And functions in the same manner as the first seal portion 15.

  In particular, the second center line Q2 serving as the center of the second sleeve portion 17 is inclined with respect to the rotation axis X. The posture is set so that the second center line Q21 intersects at the wall center T of the rotation axis X. The inclination direction of the second center line Q2 is such that the outer end side of the second sleeve portion 17 is separated from the rotation axis X and further away from the introduction port PS as the cooling water flow in the second sleeve portion 17 is further downstream. Is set to

  Further, the first discharge port P1 so that the outer peripheral portion of the first seal 15a on the introduction port PS side and the outer peripheral portion of the second seal 19a on the introduction port PS side coincide with each other in the direction along the rotation axis X. And a relative positional relationship between the second discharge port P2 and the second discharge port P2.

[Rotor]
As shown in FIG. 2 to FIG. 4 and FIG. 9, the rotor B has a rotor body 20 that rotates integrally with a shaft 27 that is disposed coaxially with the rotational axis X.

  The rotor body 20 is opened in a direction along the rotation axis X and has an opening 21 as a receiving portion that receives cooling water from the introduction port PS, and a rotor inner wall portion that is continuous with the opening 21 and forms an internal space 20S. 22, a spherical outer wall 23 centered on the wall center T, and cooling water from the inner space 20 </ b> S of the rotor B is formed in the outer wall 23 so as to be sent to the first discharge port P <b> 1 or the second discharge port P <b> 2. The control hole 24 is provided.

  Further, in the rotor body 20, an opening portion 25 in which the shaft 27 is disposed in a penetrating state is formed on the side opposite to the opening portion 21. A plurality of connecting bodies 28 formed at the protruding end of the shaft 27 are configured to rotate integrally with the rotor B by connecting to the rotor inner wall portion 22 of the rotor body 20.

  The rotor inner wall portion 22 is smoothly connected to the introduction inner wall portion 22a (an example of a second inner wall surface) that extends in a direction along the rotation axis X from the opening portion 21 and the introduction inner wall portion 22a, and is opposite to the opening portion 21. A curved inner wall portion 22b (an example of a first inner wall surface) extending in a direction to narrow the introduction inner wall portion 22a is provided. Thereby, in the internal space 20S of the rotor B, a portion of the curved inner wall portion 22b (first inner wall surface) is formed in parallel to the outer wall portion 23, and a portion of the introduction inner wall portion 22a (first inner wall surface) is predetermined. It is formed in a cylindrical shape with a thickness of. Further, the above-described opening portion 25 is formed with respect to the curved inner wall portion 22b.

  As shown in FIGS. 5 to 9, the control hole 24 includes a first hole 24a having a width slightly narrower than the inner diameter of the first seal 15a of the first discharge port P1, and a second of the second discharge port P2. A second hole 24b having a width slightly narrower than the inner diameter of the seal 19a is formed in series in a form extending along the outer periphery of the rotor body 20.

  That is, when the rotor B is rotated around the rotation axis X, one reference locus Ka (in FIG. 5, lower side / opening) in the direction along the rotation axis X of the outer periphery of the second hole 24b. 21) overlaps with the outer periphery of the first hole portion 24a, and the other intermediate locus Kb in the direction along the rotation axis X of the outer periphery of the second hole portion 24b is the rotation axis in the first hole portion 24a. The positional relationship is set so as to reach the center in the direction along the core X.

  Further, the first width W1 (width in the direction along the rotation axis X) of the first hole 24a is substantially the second width W2 (width in the direction along the rotation axis X) of the second hole 24b. It is set to 2 times. Further, the first hole portion 24a is formed with a rib portion 24r that is formed along the above-described intermediate locus Kb, thereby equally dividing the first hole portion 24a into two in the width direction.

  By forming the rib portion 24r in this way, even when the second seal 19a of the second discharge port P2 reaches the first hole portion 24a due to the setting of the rotation posture of the rotor B, the second seal 19a is The opening edge of the first hole portion 24a and the rib portion 24r come into contact with each other, and the second seal 19a can be stably supported. By forming the rib portion 24r in this way, the main long hole portion Ga (lower side of the rib portion 24r in FIG. 5) and the sub long hole portion Gb longer than the main long hole portion Ga (from the rib portion 24r in FIG. 5). Are formed in parallel.

  In particular, as shown in FIGS. 9 and 10, the rib portion 24r is a virtual outer wall surface obtained by extending the outer wall portion 23 so as not to apply a local contact pressure to the first seal 15a of the first discharge port P1. It is displaced from S in the direction of the rotation axis X. Further, in the rib portion 24r, the central region 24ra in the circumferential direction is most displaced from the virtual outer wall surface S in the direction of the rotation axis X. Further, the outer end of the rib portion 24r is arranged such that the outer end portion in the circumferential direction of the rib portion 24r is smoothly inclined and the central region 24ra and the outer wall portion of the rotor B (the edge portion of the first hole portion 24a) are continuous. An inclined region 24rb is formed in the part. With this configuration, the contact pressure of the rib portion 24r with respect to the first seal 15a is reduced, wear of the first seal 15a is suppressed, and the life of the first seal 15a is extended. In addition, by forming the inclined regions 24rb at both ends of the central region 24ra of the rib portion 24r, the rotor B can be smoothly rotated and the life of the first seal 15a can be further extended.

(Electric control unit)
The shaft 27 is rotatably supported by the housing plate 11 in a state of passing through the housing plate 11 of the housing A, and a seal that prevents leakage of cooling water between the shaft 27 and the boss portion of the housing plate 11. 29.

  The electric control unit C includes a wheel gear 31 provided at an end of the shaft 27, a worm gear 32 that meshes with the wheel gear 31, an electric motor 33 that rotationally drives the worm gear 32, and the rotation of the rotor B based on the rotational attitude of the worm gear 32. And a non-contact rotation angle sensor 34 that detects the posture.

  These are housed in a watertight case, and the electric motor 33 is controlled by an external control device. The control device sets the target posture of the rotor B based on the detection result of the water temperature sensor that measures the temperature of the cooling water of the engine E and information that requires the heater core H, and the rotor is detected by the detection signal of the rotation angle sensor 34. Control is performed so that the rotational posture of B reaches the target posture.

(Control of cooling water)
The electric controller C opens the first discharge port P1 and the second discharge port P2 at the same time, opens the second discharge port P2 only, and opens the first discharge port P1. The control for setting the rotational posture of the rotor B to the 1 open posture and the fully closed posture for simultaneously closing the first discharge port P1 and the second discharge port P2 is realized.

  That is, when the rotation posture of the rotor B is set to the fully open posture, as shown in FIG. 5, the first discharge port P1 and the second discharge port P2 communicate with the internal space 20S, and the cooling water is supplied to the first discharge port. While supplying from the discharge port P1 to the radiator R, it supplies to the heater core H from the 2nd discharge port P2. In this fully open posture, the first seal 15a contacts the pair of edges of the first hole 24a, and the second seal 19a contacts the pair of edges of the second hole 24b. The posture of each of the second seals 19a is stabilized.

  Further, when the rotor B is rotated to one side and set to the second open posture with reference to the fully open posture, the second discharge port P2 and the internal space 20S communicate with each other as shown in FIG. Therefore, the cooling water can be supplied to the heater core H. In the second opening posture, the second seal 19a moves along the sub long hole Gb to reach the position of the first hole 24a, and one of the outer circumferences of the second seal 19a is the first hole 24a. The second seal 19a is stable in posture because the other outer circumference contacts the rib 24r.

  Further, when the rotor B is rotated to the other side with the fully open posture as a reference and set to the first open posture, the first discharge port P1 and the internal space 20S communicate with each other as shown in FIG. Therefore, the cooling water can be supplied to the radiator R. Moreover, in this 1st open attitude | position, since the 1st seal | sticker 15a exists in the 1st hole 24a, the 1st seal | sticker 15a is a pair of edge part of the 1st hole part 24a (the edge part of the main long hole part Ga, and a sub long hole) The edge of the portion Gb), and the posture of the first seal 15a is stabilized.

  Further, when the rotor B is set to the fully closed posture, as shown in FIG. 8, both the first discharge port P1 and the second discharge port P2 are not in communication with the internal space 20S, and the radiator R Cooling water is not supplied to the heater core H. This fully closed posture is set when an early warm-up is required, such as immediately after the start of the engine E. Further, in this fully closed posture, the first seal 15a is in close contact with the outer wall portion 23 of the rotor B, and the second seal 19a is in close contact with the outer wall portion 23 of the rotor B.

  The electric control unit C performs cooling in a state where the flow of the cooling water is restricted (not fully opened) in both the first discharge port P1 and the second discharge port P2 by setting the rotation posture of the rotor B. It is configured to be able to perform control to arbitrarily set the amount of water supply.

  For example, as shown in FIG. 11, the first centerline Q1 of the first discharge port P1 is displaced by swinging the posture of the first centerline Q1 about the wall center T in the direction of the arrow. Is set to a posture orthogonal to the rotation axis X. Under this assumption, the first center line Q1 intersects the position of the outer wall portion 23 of the rotor B that has the largest diameter. Compared with the position of the first seal 15a indicated by the solid line, the position of the first seal 15a is displaced in the direction approaching the opening 21 (downward in the figure) as indicated by the phantom line (two-dot chain line) in FIG. To do.

  In such a displacement, a part of the first seal 15a is located on the outer wall 23 in the direction of the opening 21 from the portion of the outer wall 23 of the rotor B having the largest diameter around the rotation axis X. Will be in contact. In such a contact position, it is necessary to enlarge the area for the first seal 15a to contact in the direction of the opening 21 along the rotation axis X, so that the outer wall 23 of the rotor B extends to the rotation axis X. It becomes the composition extended along. As a result, the size of the rotor B in the direction along the rotation axis X is expanded as shown by the phantom line (two-dot chain line) in the drawing, and the inner diameter of the introduction inner wall portion 22a of the rotor inner wall portion 22 is reduced. become.

  On the other hand, in the first discharge port P1 of the present embodiment, the posture of the first center line Q1 is inclined with respect to the rotation axis X so that the downstream side of the flow of the cooling water is separated from the opening 21. Yes. Thereby, the site | part close | similar to the opening part 21 among the 1st seal | stickers 15a of the 1st discharge port P1 is made to adjoin to the position which becomes the largest diameter centering on the rotating shaft core X among the outer wall parts 23 of the rotor B. . As a result, the size of the rotor B in the direction along the rotation axis X of the refrigerant control valve device V is shortened, and the miniaturization is realized. Further, the introduction amount of the cooling water can be increased by increasing the diameter of the introduction inner wall portion 22a.

  Further, since the posture of the second center line Q2 of the second discharge port P2 is inclined with respect to the wall center T, the size of the rotor B in the direction along the rotational axis X is shortened as described above. And miniaturization is possible. In particular, since the posture of the second center line Q2 of the second discharge port P2 is set to be inclined with respect to the wall center T, for example, the posture of the second center line Q2 so as to be orthogonal to the rotation axis X. Compared with the one in which the second seal 19a is in contact with the outer wall 23 of the rotor B, the radius centered on the rotational axis X is shortened. Thus, by shortening the radius of the contact position of the second seal 19a with the outer wall portion 23, the relative movement distance between the second seal 19a and the outer wall portion 23 is shortened when the rotor B rotates, and the wear of the second seal 19a is reduced. Has been achieved.

  Further, since the first discharge port P1 and the second discharge port P2 are arranged in the housing A so as to be aligned in the circumferential direction, for example, the first discharge port P1 and the second discharge port P2 are connected to the rotation axis X. Compared to those arranged in the direction along the axis, the dimension in the direction along the rotation axis X of the housing A and the rotor B is also reduced.

  In the refrigerant control valve device V, the cross-sectional area of the opening of the introduction port PS is set to be larger than a value obtained by adding the cross-sectional area of the first discharge port P1 and the cross-sectional area of the second discharge port P2. Further, in the rotor inner wall portion 22 constituting the inner space 20S of the rotor B, the cooling water from the introduction port PS is linearly fed along the introduction inner wall portion 22a, and is guided to the rotation axis X in the curved inner wall portion 22b. Therefore, the cooling water does not stagnate and there is no problem with the flow. In the refrigerant control valve device V, the cooling water supplied from the introduction port PS is filled not only in the internal space 20S of the rotor B but also outside the rotor B.

[Second Embodiment]
In the second embodiment, the refrigerant control valve device V having the same configuration as that of the above-described embodiment is used. However, the flow direction of the cooling water (an example of the refrigerant) is reversed, and the first seal portion 15 and the first The configuration of the two seal portions 19 is different. In the second embodiment, the configuration different from that of the first embodiment is extracted and described, and the configuration common to the above-described embodiment is denoted by the same reference numeral as that of the first embodiment.

[Second Embodiment: Basic Configuration]
As shown in FIG. 12, the refrigerant control valve device V includes a discharge port US (an example of a discharge unit) for returning cooling water (an example of a refrigerant) from an engine E as an internal combustion engine to the engine E, and a radiator. A first introduction port U1 (an example of an introduction port) to which R cooling water is supplied via the radiator hose 1 and a second introduction port U2 (introduction) to which cooling water for the heater core H is supplied via the heater hose 2 An example of a mouth). The engine E has a cylinder head portion Ea and a cylinder block portion Eb, and cooling water is supplied to the outlet valve 5 from the cylinder head portion Ea. The outlet valve 5 is configured to be able to divert cooling water to the radiator R and the heater core H. Further, the cooling water from the discharge port US is sent to the water pump 4 (W / P) and returned from the water pump 4 to the cylinder block portion Eb of the engine E.

  In the second embodiment, the refrigerant control valve device V of the radiator R and the heater core H is returned to the engine E. For example, in the outlet valve 5, heat exchange such as engine oil and fluid of an automatic transmission is performed. In order to supply for this purpose, a third introduction port is formed with respect to the refrigerant control valve device V for receiving cooling water from the engine oil or the equipment for heat exchange such as fluid. Also good.

  As shown in FIGS. 13, 14, and 19, the refrigerant control valve device V is made of a resin-made spherical shape that is rotatable around a resin-made housing A and a rotation axis X as in the first embodiment. A rotor B having an outer wall portion 23 and an electric control unit C that rotationally drives the rotor B are provided. The refrigerant control valve device V is configured to create a state in which cooling water from either the radiator R or the heater core H is received and a state in which cooling water from either the radiator R or the heater core H is not received. Has been. The rotation axis X is set in a posture orthogonal to the opening surface of the introduction port PS from the center position of the discharge port US.

〔housing〕
A discharge port US is formed on the open side of the housing body 10 of the housing A. The housing A includes a first first introduction port U1 having a cylindrical first sleeve portion 13 projecting outward, and a second introduction port U2 having a second sleeve portion 17 projecting outward. Is formed. The inner diameter of the first sleeve portion 13 is formed larger than the inner diameter of the second sleeve portion 17.

  The first seal portion 15 includes an annular first seal 15a, a first packing 15b, a first intermediate ring 15c, and a first spring 15d. These are provided in a state of being fitted into the inner end position of the first sleeve portion 13.

  The first seal 15 a is movable along the first center line Q <b> 1 of the first sleeve portion 13 while being fitted in the first sleeve portion 13. The 1st packing 15b is cyclic | annular formed with flexible resin, and the lip part which contacts the inner peripheral surface of the 1st sleeve part 13 is formed in the outer peripheral side. The first packing 15b is configured to be movable along the first center line Q1 of the first sleeve portion 13.

  In particular, the first center line Q1 that is the center of the first sleeve portion 13 is inclined with respect to the rotation axis X, and the first center line Q1 intersects the rotation axis X. This intersection position becomes the wall center T, and this wall center T coincides with the center of the spherical outer wall portion 23 of the rotor B. The inclination direction of the first center line Q1 is such that the outer end side of the first sleeve portion 13 is separated from the rotation axis X toward the upstream (end portion on the introduction side) of the flow of cooling water in the first sleeve portion 13. , Is set to be separated from the discharge port US.

  The second seal 19a, the second packing 19b, the second intermediate ring 19c, and the second spring 19d constituting the second seal portion 19 are made of the same material as the corresponding member in the first seal portion 15. And functions in the same manner as the first seal portion 15. These are provided in a state of being fitted on the inner end position of the second sleeve portion 17.

[Rotor]
The rotor B has a rotor body 20 that rotates integrally with a shaft 27 that is disposed on the same axis as the rotation axis X.

  The rotor body 20 includes an opening 21 that opens in a direction along the rotational axis X and feeds cooling water from the discharge port US, a rotor inner wall 22 that is connected to the opening 21 and forms an internal space 20S, and a wall. A spherical outer wall portion 23 centering on the center T and the cooling water from the first introduction port U1 or the second introduction port U2 are formed in the outer wall portion 23 so as to receive the cooling water from the internal space 20S of the rotor B. The control hole 24 is provided.

  As shown in FIGS. 15 to 18 and 19, the control hole 24 includes a first hole 24 a serving as a first receiving part having a width slightly narrower than the inner diameter of the first seal 15 a of the first introduction port U 1. A second hole portion 24b as a second receiving portion having a width slightly narrower than the inner diameter of the second seal 19a of the second introduction port U2 is formed in series in a form extending along the outer periphery of the rotor body 20. .

  Further, the first width W1 (width in the direction along the rotation axis X) of the first hole 24a is substantially the second width W2 (width in the direction along the rotation axis X) of the second hole 24b. It is set to 2 times. Further, the first hole portion 24a is formed with a rib portion 24r that is formed along the above-described intermediate locus Kb, thereby equally dividing the first hole portion 24a into two in the width direction. In the second embodiment, contrary to the first embodiment, the main long hole portion Ga is formed above the rib portion 24r, and the sub long hole portion Gb longer than the main long hole portion Ga is below the rib portion 24r. Formed.

(Control of cooling water)
The electric control unit C has the same configuration as that of the first embodiment. The electric control unit C also opens the first introduction port U1 and the second introduction port U2 at the same time, opens the second introduction port U2 only, and opens the first introduction port U1. The control for setting the rotational posture of the rotor B to the first open posture and the fully closed posture that simultaneously closes the first introduction port U1 and the second introduction port U2 is realized.

  That is, when the rotational posture of the rotor B is set to the fully open posture, as shown in FIG. 15, the first seal 15a contacts the pair of edges of the first hole portion 24a, and the second seal 19a is the second seal 19a. Since both of the first seal 15a and the second seal 19a are in contact with the pair of edge portions of the two hole portions 24b, the posture is stabilized.

  Further, when the rotor B is rotated to one side and set to the second open posture with reference to the fully open posture, as shown in FIG. 16, the second seal 19a moves along the sub slot Gb. As a result, the position of the first hole 24a is reached, one of the outer circumferences of the second seal 19a abuts on the edge of the first hole 24a, and the other outer circumference contacts the rib 24r. 19a posture is stable

  Further, when the rotor B is rotated to the other side and set to the first open posture with reference to the fully open posture, the first seal 15a is in the first hole portion 24a as shown in FIG. The first seal 15a comes into contact with a pair of edges of the first hole 24a (the edge of the main long hole Ga and the edge of the sub long hole Gb), and the posture of the first seal 15a is stable. To do.

  Further, when the rotor B is set to the fully closed posture, as shown in FIG. 18, the first seal 15a is in close contact with the outer wall portion 23 of the rotor B, and the second seal 19a is attached to the outer wall portion 23 of the rotor B. In close contact.

[Another embodiment]
(A) As shown in FIG. 20, the refrigerant control valve device V has a cylindrical housing body 10 whose one end is closed by a housing plate 11 as a housing A, and the housing body 10 has a cylindrical first shape. The first body portion 10a and the second body portion 10b having a smaller diameter are integrated. The rotor B has a configuration in which the first rotor portion Ba accommodated in the first body portion 10a and the second rotor portion Bb accommodated in the second body portion 10b are integrated. Further, the first body portion 10a is provided with the first discharge port P1, and the second body portion 10b is formed with the third discharge port P3 (the same reference numerals are assigned to the configurations common to the embodiment). ).

  In this other embodiment (a), the introduction port PS is formed on the opposite side of the first body portion 10a from the second body portion 10b, and the housing plate 11 is formed on the second body portion 10b. The shaft 27 is rotatably supported with respect to the housing plate 11 and includes a bearing portion 46 that supports the shaft 27 at the introduction port PS. The shaft 27 is connected to the rotor B by a connecting body 28 at an intermediate position, and rotates integrally with the rotor B.

  In the rotor B, an opening 21 is formed in the first rotor portion Ba, and an open portion 25 is formed in the second rotor portion Bb. The first rotor portion Ba has a first outer wall portion 23a having a spherical surface around the first wall center T1 on the coaxial core of the rotation axis X as the outer wall portion 23 of the rotor B. Further, the second rotor portion Bb has a second outer wall portion 23b which is a spherical surface around the second wall center T2 coaxial with the rotation axis X as the outer wall portion 23 of the rotor B. Furthermore, a first control hole H1 is formed in the first outer wall portion 23a, and a second control hole H2 is formed in the second outer wall portion 23b.

  Similar to the embodiment, the first center line Q1 of the first sleeve portion 13 of the first discharge port P1 intersects with the rotation axis X in an inclined posture, and this intersecting position is the first wall center T1. Become. Further, the second center line Q2 of the second sleeve portion 17 of the second discharge port P2 intersects the first wall center T1 in a posture orthogonal to the rotation axis X.

  Further, the third discharge port P3 includes a third sleeve portion 41, a third flange portion 42 formed in a bowl shape on the outer periphery, and a third seal portion 43. The third seal portion 43 includes an annular third seal 43a, a third packing 43b, a third intermediate ring 43c, and a third spring 43d.

  By setting the relative position between the first control hole H1 and the second control hole H2 and the length extending along the circumferential direction of the rotor B, the cooling water is sent out from the first discharge port P1 and the third discharge is set. The timing of sending out the cooling water from the port P3 is determined.

  In this other embodiment (a), as is apparent from FIG. 20, the outer end portion of the first center line Q1 with the first center line Q1 of the first discharge port P1 passing through the first wall center T1. Is inclined in a direction away from the introduction port PS. In a state where the third center line Q3 of the third discharge port P3 passes through the second wall center T2, the outer end portion of the third center line Q3 is inclined in a direction away from the opening portion 25. As a result, it is possible to displace a portion of the first seal 15a of the first discharge port P1 close to the opening 21 in a direction in which it is separated from the opening 21. Similarly, it is possible to displace a portion of the third seal 43a of the third discharge port P3 that is close to the opening 25 in the direction of separating from the opening 25. For this reason, while the rotor B includes the two types of outer wall portions 23, it is possible to reduce the size in the direction along the rotation axis X and to reduce the size of the refrigerant control valve device V. .

  Even in this configuration, the flow direction of the cooling water may be used so as to be set in the opposite direction as in the second embodiment, as in the second embodiment.

(B) The first seal portion 15 and the third seal portion 43 are not limited to the above-described configuration, and at least one of them, for example, without a spring, only the lip contacts the outer wall portion 23 of the rotor B. It may be configured as a seal.

  The present invention can be used for a refrigerant control valve device in which a rotor is rotatably accommodated inside a housing having a discharge port.

15a Seal (first seal)
20S storage room (internal space)
21 Receiving part (opening)
22a First inner wall surface (introduction inner wall)
22b 2nd inner wall surface (curved inner wall part)
23 Wall (outer wall)
23a Wall (first outer wall)
24 hole (control hole)
A Housing B Rotor E Internal combustion engine
PS introduction port (introduction port)
P1 discharge part (first discharge port)
US discharge part (discharge port)
U1 introduction port (first introduction port)
U2 introduction port (second introduction port)
Q1 center line (first center line)
T wall center T1 wall center (first wall center)
X rotation axis

Claims (5)

An introduction port for receiving refrigerant from the internal combustion engine, and a housing having a discharge portion protruding to send out the refrigerant;
A rotor having a wall having a spherical outer surface and rotating around a rotation axis extending perpendicularly to the introduction port in the housing;
An annular seal that is provided in the discharge unit and abuts against the outer surface of the rotor;
The rotor includes a receiving portion that receives the refrigerant from the inlet, a storage chamber that stores the received refrigerant, and a hole portion that controls the flow of the refrigerant and sends the refrigerant to the discharge portion.
A refrigerant control valve device in which a center line of the discharge portion passes through a center of a sphere of the rotor, and a discharge side end portion of the discharge portion is inclined in a direction away from the introduction port. A housing provided with an inlet that protrudes in a cylindrical shape so as to receive a refrigerant from the internal combustion engine, and a discharge portion that sends out the refrigerant;
A rotor having a spherical outer surface and rotating around a rotation axis extending perpendicularly to the discharge part inside the housing;
An annular seal provided at the introduction port and in contact with the outer surface of the rotor;
The rotor includes a receiving portion that receives the refrigerant from the inlet, a storage chamber that stores the received refrigerant, and a hole portion that controls the flow of the refrigerant and sends the refrigerant to the discharge portion.
A refrigerant control valve device in which a center line of the discharge portion passes through a center of a sphere of the rotor, and an introduction side end portion of the introduction port is inclined in a direction away from the discharge portion.   The storage chamber is curved in such a manner that it extends smoothly from the receiving portion in a direction along the axis of rotation and in a direction that smoothly connects to the first inner wall portion and constricts the first inner wall portion. The refrigerant control valve device according to claim 1, further comprising a second inner wall portion.   The refrigerant control valve device according to claim 2, wherein the rotor includes a second inner wall surface parallel to the spherical outer surface.   The refrigerant control valve device according to any one of claims 1 to 3, wherein the annular seal is urged toward the wall portion of the outer surface of the rotor.

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