JP6503835B2 - Refrigerant control valve device - Google Patents

Description

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

  As a refrigerant control valve device, Patent Document 1 discloses a technique in which a rotor (a cross-section adjusting member in the literature) is rotatably disposed inside a housing. In this patent document 1, the flow of refrigerant between the inside of the rotor and the port is achieved by overlapping the opening formed in the outer periphery of the rotor with the port formed in the housing (the opening of the connection pipe in the literature). It is configured to allow.

  In this patent document 1, the rotor is formed in a spherical shape, and an opening opened in a direction along the rotation axis and a plurality of openings corresponding to the ports are formed in the spherical outer wall surface.

  Patent Document 2 discloses a technique in which a cylindrical rotor (a valve in the literature) is rotatably disposed inside a housing. In the device of Patent Document 2, first and second fluid passages are provided at overlapping positions in the direction along the rotational axis of the rotor with respect to the housing, and the third flow passage opened in the direction along the rotational axis is provided. ing. Further, the rotor is formed with an opening opened in a direction along the rotation axis so as to always communicate with the third flow passage, and an opening for controlling the flow of the refrigerant to the first and second fluid passages. There is.

  From this configuration, by setting the rotational attitude of the rotor, in a state in which one of the first and second fluid passages is closed, a state in which the refrigerant flows in the other and a state in which the first fluid passage is closed It is configured to create a squeezed state.

JP-A-2010-507762 JP 2002-98245 A

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

  However, considering that the discharge port having a large diameter is formed in a posture perpendicular to the rotation axis, the dimensions of the housing in the direction along the rotation axis of the rotor correspond to the diameter of the discharge port. It has also been considered that the lengthening may lead to an increase in the size of the refrigerant control valve device. For this reason, shortening of the housing in the direction along the rotational axis of the rotor has been desired.

  That is, in such a refrigerant control valve device, downsizing is required.

Feature of the present invention includes a housing having an inlet for receiving the refrigerant from the internal combustion engine, and a first discharge portion and a second discharge portion that protrudes in a circular cylindrical shape so as to feed the coolant, and
A rotor having a wall with a spherical outer surface, and rotating inside the housing about an axis of rotation extending perpendicularly to the inlet;
An annular first seal provided at the first discharge portion and in contact with the outer surface of the rotor;
And an annular second seal provided on the second discharge portion and in contact with the outer surface of the rotor .
The rotor receives a refrigerant from the inlet, a receiving chamber for containing the received refrigerant, and a hole for controlling the flow of the refrigerant and delivering the refrigerant to the first discharge part and the second discharge part And
The center line of the first discharge portion passes through the center of the ball of the rotor, and the discharge side end portion of the first discharge portion is inclined in a direction away from the inlet .
The center line of the second discharge part passes through the center of the ball of the rotor, and the discharge side end of the second discharge part is inclined in the direction away from the introduction port .

For example, assuming that the center line of the discharge portion is formed in a posture orthogonal to the rotation axis, in this assumption, the housing has a length corresponding to the diameter of the discharge portion in the direction along the rotation axis. It is necessary to ensure that the dimensions of the housing are difficult to shorten.
In contrast to this, in the feature of the present invention, the center line of the first discharge part and the second discharge part is inclined with respect to the rotation axis, and the inclination direction is the first discharge part (second discharge part) Since the discharge side end of the nozzle is inclined in the direction of separating from the inlet, it is possible to displace the region near the inlet among the outer peripheries of the openings of the first and second discharge parts in the direction of separating from the inlet. It becomes possible.
As a result, a miniaturized refrigerant control valve device was constructed.

A feature of the present invention is a housing having first and second cylindrically projected first and second inlets for receiving the refrigerant from the internal internal combustion engine, and a discharge unit for discharging the refrigerant.
A rotor having a wall with a spherical outer surface and rotating about an axis of rotation extending perpendicularly to the discharge within the housing;
An annular first seal provided at the first inlet and in contact with the outer surface of the rotor;
And an annular second seal provided in the second inlet and in contact with the outer surface of the rotor .
The rotor controls the flow of the refrigerant from the first inlet and the second inlet to receive the refrigerant, the receiving chamber for containing the received refrigerant, and the opening for delivering the refrigerant to the outlet. And
The first inlet has a larger inside diameter than the second inlet,
Center line of the first inlet port, through the center of the sphere of the rotor, inlet side end portion of the first inlet port is inclined in a direction away from the discharge portion,
The center line of the second inlet passes through the center of the ball of the rotor and is orthogonal to the rotation axis .

For example, assuming that the center line of the introduction port is formed in a posture perpendicular to the rotation axis, in this assumption, the housing has a length corresponding to the diameter of the introduction port in the direction along the rotation axis. It is necessary to ensure that the dimensions of the housing are difficult to shorten.
Compared with this, in the feature of the present invention, the center line of the first inlet is inclined with respect to the rotation axis, and the inclination direction of the introduction side end of the first inlet is separated from the discharge part Since it inclines in a direction, it becomes possible to displace the area | region close | similar to a discharge part among the outer periphery of opening of a 1st inlet in the direction away from a discharge part.
As a result, a miniaturized refrigerant control valve device was constructed.
In the present invention, the hole is divided into a main long hole provided along the circumferential direction of the rotor and the main long hole, and is parallel to the main long hole in a direction along the rotation axis. And an auxiliary long hole portion which is longer in length along the circumferential direction of the rotor than the main long hole portion,
The first discharge part has a larger inside diameter than the second discharge part,
The main long hole portion can communicate only with the first discharge portion, and a length along a circumferential direction of the rotor is longer than an inner diameter of the first discharge portion, and a length along the rotation axis is the length Shorter than the inner diameter of the first discharge part,
The sub elongated hole portion can simultaneously communicate with the first discharge portion and the second discharge portion, and a length along a circumferential direction of the rotor extends from the first discharge portion to the second discharge portion. The length along the rotation axis may be shorter than the inner diameter of the first discharge part.
In the present invention, the hole is divided into a main long hole provided along the circumferential direction of the rotor and the main long hole, and is parallel to the main long hole in a direction along the rotation axis. And an auxiliary long hole portion which is longer in length along the circumferential direction of the rotor than the main long hole portion,
The main long hole portion can communicate only with the first inlet, and a length along a circumferential direction of the rotor is longer than an inner diameter of the first inlet, and a length along the rotation axis is the same. Shorter than the inner diameter of the first inlet,
The sub elongated hole portion can simultaneously communicate with the first inlet and the second inlet, and a length along a circumferential direction of the rotor extends from the first inlet to the second inlet. The length along the rotation axis may be shorter than the inner diameter of the first inlet.

  In the present invention, a direction in which the storage chamber is smoothly connected to the first cylindrical inner wall that continues from the receiving part in the direction along the axis of rotation and the first inner wall and that the first inner wall is narrowed And a curved second inner wall extending to the

  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 flows so as to curve along the second inner wall surface, so stagnation is generated in the accommodation chamber of the rotor There is no cause for it. Thereby, the flow of the refrigerant from the internal space to the discharge portion becomes smooth.

In the present invention, the rotor may have a second inner wall surface in which a second inner wall portion is parallel to the spherical outer surface.

  In the case of manufacturing the rotor from resin using a mold, if the thickness of the resin is non-uniform, shrinkage may be caused in a portion where the thickness is large, which may distort the rotor. On the other hand, in the case of forming the inner surface parallel to the spherical outer surface, even if the resin is used to form the rotor using a mold, the rotor is not distorted.

In the present invention, the annular first and second seals may be biased toward the wall of the outer surface of the rotor.

  In this manner, by bringing the seal into close contact with the outer surface of the rotor by the biasing force, the closed state of the valve device can be maintained well.

It is a figure showing an engine cooling system. It is a longitudinal cross-sectional view of a refrigerant control valve device to which cooling water is sent to the 2nd discharge port. It is a longitudinal cross-sectional view of a refrigerant control valve device to which cooling water is sent to the 1st discharge port. It is a cross-sectional view of a refrigerant control valve device. It is an expanded view of a rotor in a full open posture. It is an expanded view of a rotor in a 2nd open posture. It is an expanded view of a rotor in a 1st open posture. It is an expanded view of a 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 a sectional view explaining the relation between a rotor and the 1st seal. It is a figure which shows the engine cooling system of 2nd Embodiment. It is a longitudinal cross-sectional view of a refrigerant control valve device to which cooling water is sent to the 2nd introduction port. It is a cross-sectional view of a refrigerant control valve device. It is an expanded view of a rotor in a full open posture. It is an expanded view of a rotor in a 2nd open posture. It is an expanded view of a rotor in a 1st open posture. It is an expanded view of a 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 based on the drawings.
First Embodiment: Basic Configuration
As shown in FIG. 1, the refrigerant control valve device V includes an introduction port PS provided in a vehicle and receiving cooling water (an example of a refrigerant) from an engine E as an internal combustion engine, and the cooling water via a radiator hose 1 A first discharge port P1 (one example of a discharge unit) to be sent to R and a second discharge port P2 (one example of a discharge unit) to send 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 the 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 Will be returned to

  In the first embodiment, the cooling water from the refrigerant control valve device V is supplied to the radiator R and the heater core H, but, for example, for heat exchange of engine oil, fluid of automatic transmission, etc. It may be used to supply. When used in this manner, 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 has a resin housing A and a spherical outer wall made of resin which is accommodated rotatably 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 portion C for rotationally driving the rotor B are provided. The refrigerant control valve device V supplies the cooling water (an example of the refrigerant) of the engine E to at least one of the radiator R or the heater core H as a device requiring heat, and either the radiator R or the heater core H It is also configured to create a condition that does not supply. The rotational axis X is set to be 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 is provided with 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 has 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 hook shape on the outer periphery of the first sleeve portion 13. And a first seal portion 15 fitted on 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 periphery. Further, the first seal portion 15 is configured of an annular first seal 15 a, a first packing 15 b, a first intermediate ring 15 c, and a first spring 15 d. These are provided in a state of being externally fitted to 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 to close the first discharge port P 1, the first seal portion 15 is in close contact with the spherical outer wall portion 23 so that the first discharge port P 1 and the rotor B are in contact with each other. Function to shut off the flow of cooling water to and from the outer wall portion 23 of the

  The first seal 15a is annularly formed of a flexible resin such as PTFE (polytetrafluoroethylene). The first seal 15 a is movable along a first center line Q 1 of the first sleeve portion 13 in a state of being fitted to the first sleeve portion 13. The first packing 15 b is an annular ring formed of a flexible resin, and a lip portion in contact with the outer peripheral surface of the first sleeve portion 13 is formed on the inner peripheral side. The first packing 15 b is movable along a first center line Q 1 of the first sleeve portion 13.

  The first intermediate ring 15c is formed of metal or resin having high rigidity, and is disposed at a position where it is fitted to the first packing 15b. The first spring 15d is formed of a metal material, and one end is in contact with the first flange portion 14 and the other end is in contact with the first intermediate ring 15c. The first seal 15 a contacts the outer wall portion 23 of the rotor B by the biasing force of the first spring 15 d.

  In particular, the first center line Q1 which is the center of the first sleeve portion 13 is inclined with respect to the rotation axis X. The first center line Q1 intersects with the rotational axis X, and this intersecting position is the wall center T, and the 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 rotational axis X and is separated from the introduction port PS as the flow of cooling water in the first sleeve portion 13 is downstream. Is set as.

  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 hook shape on the outer periphery of the second sleeve portion 17, and And a second seal portion 19 fitted on the inner end of the second sleeve portion 17.

  The outer periphery of the second flange 18 is connected to the housing body 10 by welding over the entire periphery. The second seal portion 19 is configured of 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 externally fitted to 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 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 closed. Function to shut off the flow of cooling water to and from the outer wall portion 23 of the

  The second seal 19a constituting the second seal portion 19, the second packing 19b, the second intermediate ring 19c, and the second spring 19d are made of the same material as the corresponding members 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 which is the center of the second sleeve portion 17 is inclined with respect to the rotation axis X. The attitude of the second center line Q21 is set to intersect 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 rotational axis X and is separated from the introduction port PS toward the downstream of the flow of the cooling water in the second sleeve portion 17 Is set as.

  Furthermore, the first discharge port P1 is arranged such that the outer periphery of the first seal 15a on the introduction port PS side and the outer periphery of the second seal 19a on the introduction port PS side coincide in the direction along the rotation axis X. The relative positional relationship between the second discharge port P2 and the second discharge port P2 is set.

[Rotor]
As shown in FIGS. 2 to 4 and 9, the rotor B has a rotor main body 20 that rotates integrally with a shaft 27 coaxially arranged with the rotation axis X.

  The rotor body 20 is opened in a direction along the rotational axis X and has an opening 21 as a receiving portion for receiving the cooling water from the introduction port PS, and an inner wall of the rotor that is continuous with the opening 21 and forms an internal space 20S inside. 22 formed on the outer wall portion 23 to send cooling water from the inner space 20S of the rotor B to the first discharge port P1 or the second discharge port P2 And the control hole 24.

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

The rotor inner wall 22 is smoothly connected to the introduction inner wall 22a (an example of the first inner wall) continuous from the opening 21 in the direction along the rotational axis X, and is smoothly connected to the introduction inner wall 22a. And a curved inner wall 22b (an example of a second inner wall) extending in a direction to narrow the introduction inner wall 22a. Thereby, in the internal space 20S of the rotor B, the portion of the curved inner wall 22b (the second inner wall) is formed parallel to the outer wall 23, and the portion of the introduction inner wall 22a (the first inner wall) is predetermined. Is formed in a tubular shape. Further, the above-described open portion 25 is formed to the curved inner wall portion 22b.

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

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

  The first width W1 (the width in the direction along the rotation axis X) of the first hole 24a is approximately equal to the second width W2 (the width in the direction along the rotation axis X) of the second hole 24b. It is set to 2 times. Furthermore, in the first hole portion 24a, a rib portion 24r that divides the first hole portion 24a equally in the width direction into two is formed by being formed along the above-described intermediate trajectory Kb.

  By forming the rib portion 24r in this manner, even when the second seal 19a of the second discharge port P2 reaches the first hole portion 24a due to the setting of the rotational attitude of the rotor B, the second seal 19a is not deformed. The opening edge of the first hole portion 24a and the rib portion 24r are in contact with each other, and the second seal 19a can be stably supported. By thus forming the rib portion 24r, the main long hole portion Ga (lower side than the rib portion 24r in FIG. 5) and the sub long hole portion Gb longer than the main long hole portion Ga (in FIG. 5 than the rib portion 24r) And the upper side) are formed in parallel.

  In particular, as shown in FIGS. 9 and 10, a virtual outer wall surface obtained by extending the outer wall portion 23 so that the rib portion 24r does not exert a local contact pressure on the first seal 15a of the first discharge port P1. It is displaced in the direction of the rotation axis X from S. Further, in the rib portion 24r, the central region 24ra in the circumferential direction is most displaced in the direction of the rotation axis X from the virtual outer wall surface S. Further, the outer end of the rib portion 24r is arranged so that the central region 24ra and the outer wall portion of the rotor B (the edge portion of the first hole portion 24a) are connected in a smooth slope at the outer end portion in the circumferential direction of the rib portion 24r. An inclined region 24rb is formed in the portion. With this configuration, the contact pressure of the rib portion 24r on the first seal 15a is reduced to suppress the wear of the first seal 15a, and the life of the first seal 15a is extended. In addition, by forming the sloped regions 24rb at both ends of the central region 24ra of the rib portion 24r, the rotor B can be rotated smoothly, 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 so as to penetrate the housing plate 11 of the housing A, and a seal that prevents leakage of cooling water between the shaft 27 and the boss of the housing plate 11. It has 29.

  The electric control unit C includes a wheel gear 31 provided at an end of the shaft 27, a worm gear 32 engaged with the wheel gear 31, an electric motor 33 for rotationally driving the worm gear 32, and rotation of the rotor B from the rotation posture of the worm gear 32. And a non-contact type rotation angle sensor 34 for detecting a posture.

These are accommodated in a watertight case, and the electric motor 33 is controlled by an external controller.
The control device sets the target attitude 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 the information that requires the heater core H, and detects the rotor by the detection signal of the rotation angle sensor 34 Control is performed so that the rotational attitude of B reaches the target attitude.

[Control of cooling water]
The electric control unit C opens the first discharge port P1 and the second discharge port P2 simultaneously, the second open posture in which only the second discharge port P2 is opened, and the first control port C2 opens the first discharge port P1. The control for setting the rotational attitude of the rotor B to the open position and the fully closed attitude for simultaneously closing the first discharge port P1 and the second discharge port P2 is realized.

  That is, when the rotational attitude of the rotor B is set to the fully open attitude, 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 At the same time as supplying from the discharge port P1 to the radiator R, it supplies to the heater core H from the second discharge port P2. Also, in this fully open position, the first seal 15a abuts on the pair of edges of the first hole 24a, and the second seal 19a abuts on the pair of edges of the second hole 24b, and the first seal 15a The posture is stabilized in any of the second seal 19a.

  In addition, when the rotor B is rotated to one side based on the fully open attitude and set to the second open attitude, as shown in FIG. 6, the second discharge port P2 and the internal space 20S communicate with each other. Therefore, the cooling water can be supplied to the heater core H. Further, in the second open posture, the second seal 19a moves along the auxiliary long hole portion Gb to reach the position of the first hole portion 24a, and one of the outer peripheries of the second seal 19a is the first hole portion 24a. Of the second seal 19a is stabilized because the other of the outer circumference contacts the rib portion 24r.

  Further, when the rotor B is rotated by the other on the basis of the fully open attitude and set to the first open attitude, as shown in FIG. 7, the first discharge port P1 and the internal space 20S communicate with each other. Therefore, the coolant R can be supplied to the radiator R. Further, in the first open position, the first seal 15a is in the first hole 24a, so the first seal 15a is a pair of edges of the first hole 24a (the edge of the main long hole Ga and the sub long hole And the edge of the portion Gb), and the posture of the first seal 15a is stabilized.

  Furthermore, 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 become disconnected from the internal space 20S, and the radiator R Cooling water is not supplied to the heater core H. The fully closed position is set when an early warm-up is required as immediately after the start of the engine E. In the fully closed position, the first seal 15a is in close contact with the outer wall 23 of the rotor B, and the second seal 19a is in close contact with the outer wall 23 of the rotor B.

  Note that the motor control unit C performs cooling in a state where the flow of the cooling water is restricted (in a state where it is not fully opened) in any of the first discharge port P1 and the second discharge port P2 by setting the rotational attitude of the rotor B. It is configured to be able to control to set the water supply amount arbitrarily.

  For example, as shown in FIG. 11, by displacing the posture of the first center line Q1 of the first discharge port P1 in the direction of the arrow around the wall center T, the first center line Q1 is obtained. It is assumed that the posture of is set to the posture orthogonal to the rotation axis X. In this assumption, the first center line Q1 intersects the position of the outer wall 23 of the rotor B that has the largest diameter. Compared with the position of the first seal 15a indicated by a solid line, the position of the first seal 15a is displaced in the direction approaching the opening 21 (lower side in the figure) as indicated by an imaginary line (two-dot chain line) Do.

  In the case where the first seal 15a is displaced in this manner, 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 centered on the rotation axis X. It will contact. At such a contact position, it is necessary to expand the area for the first seal 15a to contact in the direction of the opening 21 along the rotational axis X, and the outer wall 23 of the rotor B becomes the rotational axis X. It becomes the composition which extends along. As a result, the dimension of the rotor B in the direction along the rotational axis X is enlarged as shown by the phantom line (two-dot chain line) in the same figure, and the inner diameter of the introduction inner wall 22a of the rotor inner wall 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 as to be separated from the opening 21 toward the downstream side of the flow of cooling water. There is.
Thus, the portion of the first seal 15a of the first discharge port P1 close to the opening 21 is brought close to the position of the outer wall portion 23 of the rotor B with the largest diameter centered on the rotation axis X. . 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. Moreover, 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 about the wall center T, the dimension of the rotor B in the direction along the rotation axis X is shortened as described above. Enables miniaturization. In particular, since the posture of the second center line Q2 of the second discharge port P2 is set to a posture inclined about the wall center T, for example, the posture of the second center line Q2 orthogonal to the rotation axis X In the position where the second seal 19a contacts the outer wall portion 23 of the rotor B, the radius centered on the rotation axis X is shortened. As described above, by shortening the radius of the contact position of the second seal 19a with respect to the outer wall portion 23, the relative moving distance between the second seal 19a and the outer wall portion 23 is also shortened when the rotor B rotates, and the second seal 19a wears out. Control of the

  Furthermore, since the first discharge port P1 and the second discharge port P2 are arranged in the circumferential direction in the housing A, for example, the first discharge port P1 and the second discharge port P2 can be divided by the rotation axis X As compared with those arranged in the direction along the direction of the axis X, shortening of the dimension in the direction along the rotational axis X of the housing A and the rotor B is also realized.

In the refrigerant control valve device V, the cross-sectional area of the opening of the introduction port PS is set larger than the value obtained by combining 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, cooling water from the introduction port PS is linearly fed along the introduction inner wall portion 22a and guided to the rotation axis X in the curved inner wall portion 22b. The water does not stagnate in the cooling water, and the flow is unreasonable.
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 opposite. The configuration of the second seal portion 19 is different. In the second embodiment, configurations different from the first embodiment are extracted and described, and the configurations common to the first embodiment are denoted by the same reference numerals as the first embodiment.

Second Embodiment Basic Configuration
The refrigerant control valve device V, as shown in FIG. 12, includes a discharge port US (an example of a discharge portion) for returning cooling water (an example of a refrigerant) from an engine E as an internal combustion engine to an engine E A first introduction port U1 (an example of an introduction port) in which the cooling water of R is supplied through the radiator hose 1 and a second introduction port U2 (introduction of the cooling water of the heater core H through the heater hose 2 An example of the mouth). The engine E has a cylinder head portion Ea and a cylinder block portion Eb, and the coolant is supplied from the cylinder head portion Ea to the outlet valve 5. The outlet valve 5 is configured to be capable of dividing the cooling water into 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 is 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 or automatic transmission fluid is performed. In this system, a third introduction port is formed for the refrigerant control valve device V for receiving cooling water from equipment that performs heat exchange such as engine oil and fluid. Also good.

  As shown in FIG. 13, FIG. 14, and FIG. 19, the refrigerant control valve device V has a resin housing S and a resin spherical resin that is rotatable about the rotation axis X as in the first embodiment. A rotor B having an outer wall portion 23 and an electric control unit C for rotationally driving the rotor B are provided. The refrigerant control valve device V is configured to create a state of receiving cooling water from either the radiator R or the heater core H, and a state of not receiving cooling water from either the radiator R or the heater core H. It is done. The rotational axis X is set to 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. Further, 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. It is formed. The inner diameter of the first sleeve portion 13 is 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 to the inner end position of the first sleeve portion 13.

  The first seal 15 a is movable along a first center line Q 1 of the first sleeve portion 13 in a state of being fitted in the first sleeve portion 13. The first packing 15 b is an annular ring formed of a flexible resin, and a lip portion in contact with the inner peripheral surface of the first sleeve portion 13 is formed on the outer peripheral side. The first packing 15 b is configured to be movable along a first center line Q 1 of the first sleeve portion 13.

  In particular, the first center line Q1 which 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 is 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 rotational axis X as the upstream (end portion on the introduction side) of the flow of the cooling water in the first sleeve portion 13 , And is set apart from the discharge port US.

  The second seal 19a constituting the second seal portion 19, the second packing 19b, the second intermediate ring 19c, and the second spring 19d are made of the same material as the corresponding members 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 externally fitted to the inner end position of the second sleeve portion 17.

[Rotor]
The rotor B has a rotor main body 20 that rotates integrally with a shaft 27 coaxially arranged with the rotation axis X.

  The rotor body 20 is opened in the direction along the rotational axis X and has an opening 21 for sending the cooling water from the discharge port US, a rotor inner wall 22 connected to the opening 21 and forming an internal space 20S inside, a wall The outer wall 23 has a spherical shape centering on the center T, and the cooling water from the first introduction port U1 or the second introduction port U2 is formed in the outer wall 23 so as to receive the cooling water from the internal space 20S of the rotor B. And the control hole 24.

  As shown in FIG. 15 to FIG. 18 and FIG. 19, the control hole 24 and the first hole 24 a as a first receiving portion have a width slightly narrower than the inner diameter of the first seal 15 a of the first introduction port U1. A second hole 24b serving 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 along the outer periphery of the rotor main body 20. .

  The first width W1 (the width in the direction along the rotation axis X) of the first hole 24a is approximately equal to the second width W2 (the width in the direction along the rotation axis X) of the second hole 24b. It is set to 2 times. Furthermore, in the first hole portion 24a, a rib portion 24r that divides the first hole portion 24a equally in the width direction into two is formed by being formed along the above-described intermediate trajectory Kb. In the second embodiment, contrary to the first embodiment, the main long hole Ga is formed above the rib 24r, and the sub long hole Gb longer than the main long hole Ga is lower than the rib 24r. Is formed.

[Control of cooling water]
The motor control unit C has the same configuration as that of the first embodiment. In addition, the motor control unit C opens the first introduction port U1 and the second introduction port U2 simultaneously, the second opening attitude in which only the second introduction port U2 is opened, and the first introduction port U1. The control for setting the rotational attitude of the rotor B to the first open attitude and the fully closed attitude for simultaneously closing the first introduction port U1 and the second introduction port U2 is realized.

  That is, when the rotational attitude of the rotor B is set to the fully open attitude, as shown in FIG. 15, the first seal 15a abuts on the pair of edge portions of the first hole 24a, and the second seal 19a The postures of both the first seal 15a and the second seal 19a are stable because they abut on the pair of edges of the two holes 24b.

  When the rotor B is rotated to one side based on the fully open attitude and set to the second open attitude, as shown in FIG. 16, the second seal 19a moves along the auxiliary long hole Gb. To reach the position of the first hole 24a, and one of the outer periphery of the second seal 19a abuts on the edge of the first hole 24a, and the other of the outer periphery contacts the rib 24r. 19a's attitude is stabilized

  In addition, when the rotor B is rotated by the other on the basis of the fully open posture and set to the first open posture, as shown in FIG. 17, the first seal 15a is in the first hole 24a. The first seal 15a comes in contact with the 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. Do.

  Furthermore, when the rotor B is set to the fully closed position, as shown in FIG. 18, the first seal 15 a is in close contact with the outer wall 23 of the rotor B, and the second seal 19 a is attached to the outer wall 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 the housing plate 11 as the housing A, and the housing body 10 has a cylindrical shape. The first body portion 10a and the second body portion 10b having a smaller diameter than the first body portion 10a are integrated. As the rotor B, the first rotor portion Ba housed in the first body portion 10a and the second rotor portion Bb housed in the second body portion 10b are integrated. Furthermore, 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. ).

  In the alternative embodiment (a), the introduction port PS is formed on the opposite side of the first body portion 10a to the second body portion 10b, and the housing plate 11 is formed on the second body portion 10b. A shaft 27 is rotatably supported on the housing plate 11 and has a bearing 46 that supports the shaft 27 at the introduction port PS. The shaft 27 is connected to the rotor B by a connecting member 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, as the outer wall portion 23 of the rotor B, a first outer wall portion 23a that is a spherical surface centered on a first wall center T1 coaxial with the rotation axis X. Further, the second rotor portion Bb has a second outer wall portion 23b which is a spherical surface centering on 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 23a, and a second control hole H2 is formed in the second outer wall 23b.

  As in the embodiment, the first center line Q1 of the first sleeve portion 13 of the first discharge port P1 intersects in a posture inclined with respect to the rotation axis X, and this intersection position intersects with the first wall center T1. Become. In addition, 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 has a third sleeve portion 41, a third flange portion 42 formed in a bowl shape on the outer periphery thereof, 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.

  Delivery of cooling water from the first discharge port P1 and third discharge 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 timing of delivery of the cooling water from the port P3 is determined.

  In this alternative embodiment (a), as is apparent from FIG. 20, with the first center line Q1 of the first discharge port P1 passing the first wall center T1, the outer end portion of the first center line Q1 is Is inclined in a direction away from the introduction port PS. With the third center line Q3 of the third discharge port P3 passing through the second wall center T2, the outer end of the third center line Q3 is inclined in the direction away from the opening 25. As a result, it becomes possible to displace a portion of the first seal 15a of the first discharge port P1 close to the opening 21 in a direction away from the opening 21. Similarly, in the third seal 43 a of the third discharge port P <b> 3, it is possible to displace a portion close to the opening 25 in a direction away from the opening 25. For these reasons, it is possible to shorten the dimension in the direction along the rotational axis X and to miniaturize the refrigerant control valve device V while the rotor B is provided with the two types of outer wall portions 23 .

  Even in this configuration, as in the second embodiment, the flow direction of the cooling water may be used in the opposite direction 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 may be in contact with the outer wall portion 23 of the rotor B without a spring, for example. 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 in a housing having a discharge port.

15a seal (first seal)
20S storage room (internal space)
21 Receiving part (opening part)
22a first inner wall (introduction inner wall)
22b Second inner wall surface (curved inner wall)
23 wall (outer wall)
23a wall (first outer wall)
24 hole (control hole)
A Housing B Rotor E Internal Combustion Engine (Engine)
PS introduction port (introduction port)
P1 Discharge part (1st discharge port)
US discharge part (discharge port)
U1 inlet (first inlet port)
U2 inlet (second inlet port)
Q1 center line (first center line)
T wall center T1 wall center (first wall center)
X axis of rotation

Claims (7)

A housing having an inlet for receiving the refrigerant from the internal combustion engine, and a first discharge portion and a second discharge portion that protrudes in a circular cylindrical shape so as to feed the coolant, and
A rotor having a wall with a spherical outer surface, and rotating inside the housing about an axis of rotation extending perpendicularly to the inlet;
An annular first seal provided at the first discharge portion and in contact with the outer surface of the rotor;
And an annular second seal provided on the second discharge portion and in contact with the outer surface of the rotor .
The rotor receives a refrigerant from the inlet, a receiving chamber for containing the received refrigerant, and a hole for controlling the flow of the refrigerant and delivering the refrigerant to the first discharge part and the second discharge part And
The center line of the first discharge portion passes through the center of the ball of the rotor, and the discharge side end portion of the first discharge portion is inclined in a direction away from the inlet .
The refrigerant control valve device according to claim 1, wherein a center line of the second discharge portion passes through a center of a ball of the rotor, and a discharge side end portion of the second discharge portion is inclined in a direction away from the inlet . A housing comprising first and second cylindrically-projected first and second inlets for receiving a refrigerant from an internal combustion engine, and a discharge unit for discharging the refrigerant;
A rotor having a wall with a spherical outer surface and rotating about an axis of rotation extending perpendicularly to the discharge within the housing;
An annular first seal provided at the first inlet and in contact with the outer surface of the rotor;
And an annular second seal provided in the second inlet and in contact with the outer surface of the rotor .
The rotor controls the flow of the refrigerant from the first inlet and the second inlet to receive the refrigerant, the receiving chamber for containing the received refrigerant, and the opening for delivering the refrigerant to the outlet. And
The first inlet has a larger inside diameter than the second inlet,
Center line of the first inlet port, through the center of the sphere of the rotor, inlet side end portion of the first inlet port is inclined in a direction away from the discharge portion,
The refrigerant control valve device , wherein a center line of the second inlet passes through a center of a ball of the rotor and is orthogonal to the rotation axis . The hole is divided into a main long hole provided along the circumferential direction of the rotor and the main long hole, and provided parallel to the main long hole in a direction along the rotation axis. And a sub-long hole whose length along the circumferential direction of the rotor is longer than the main long hole.
  The first discharge part has a larger inside diameter than the second discharge part,
  The main long hole portion can communicate only with the first discharge portion, and a length along a circumferential direction of the rotor is longer than an inner diameter of the first discharge portion, and a length along the rotation axis is the length Shorter than the inner diameter of the first discharge part,
  The sub elongated hole portion can simultaneously communicate with the first discharge portion and the second discharge portion, and a length along a circumferential direction of the rotor extends from the first discharge portion to the second discharge portion. The refrigerant control valve device according to claim 1, wherein a length along the rotation axis is shorter than an inner diameter of the first discharge portion. The hole is divided into a main long hole provided along the circumferential direction of the rotor and the main long hole, and provided parallel to the main long hole in a direction along the rotation axis. And a sub-long hole whose length along the circumferential direction of the rotor is longer than the main long hole.
  The main long hole portion can communicate only with the first inlet, and a length along a circumferential direction of the rotor is longer than an inner diameter of the first inlet, and a length along the rotation axis is the same. Shorter than the inner diameter of the first inlet,
  The sub elongated hole portion can simultaneously communicate with the first inlet and the second inlet, and a length along a circumferential direction of the rotor extends from the first inlet to the second inlet. The refrigerant control valve device according to claim 2, wherein a length along the rotation axis is shorter than an inner diameter of the first inlet. The storage chamber is a curved first cylindrical inner wall continuous with the receiving portion in a direction along the axis of rotation, and a curved curved line extending smoothly in the direction along the first inner wall. The refrigerant control valve device according to any one of claims 1 to 4, further comprising a second inner wall portion. 6. The refrigerant control valve device according to claim 5 , wherein the rotor includes a second inner wall surface in which the second inner wall portion is parallel to the spherical outer surface. The refrigerant control valve device according to any one of claims 1 to 6 , wherein the annular first seal and the second seal are biased toward the wall portion of the outer surface of the rotor.

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