WO2015182814A1

WO2015182814A1 - Valve device for electrically driven vehicle

Info

Publication number: WO2015182814A1
Application number: PCT/KR2014/005887
Authority: WO
Inventors: 장석윤; 김준우; 김서규; 손재영; 박창현; 강동준
Original assignee: 인지컨트롤스주식회사
Priority date: 2014-05-26
Filing date: 2014-07-02
Publication date: 2015-12-03
Also published as: KR101601420B1; KR20150136174A

Abstract

The present invention relates to a valve device provided on a fluid circulation circuit of an electrically driven vehicle. The present invention comprises: a valve body having two or more ports on the outer side thereof and having an inner space for communicating with the ports; a valve member, rotatably provided in the inner space of the valve body, for opening and closing the ports; and a sealing means for sealing one or more of the ports, wherein the sealing means comprises sealing members, which are hermetically provided on the inner sides of the ports, and an elastic member, which is provided on one end of the sealing member and applies to the sealing member elasticity in the direction of the axial line, thereby bringing the other end of the sealing member into hermetical contact with the outer side of the valve member. The present invention enables sealing by means of a sealing means.

Description

Electric Valve Valve

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device for an electrically driven vehicle installed in a fluid circulation circuit of an electrically driven vehicle and used for fluid circulation, fluid flow interruption, and the like. The present invention relates to an electrically operated valve device for a vehicle that can be greatly improved.

Electric vehicles (EVs) are being actively researched in that they are the most likely alternatives to solve future automotive pollution and energy problems.

Electrically driven vehicles are classified into fuel cell driven type driven by electricity generated by chemical change and secondary battery type or battery cell type powered by driving AC or DC motor through battery power source. It also includes the way of powering by power. Such an electrically driven vehicle generates a large amount of heat when electricity is supplied to the driving unit of the vehicle. In addition, the electric drive-type vehicle has a problem that the resistance is also increased when the arrangement occurs, the discharge is accelerated, the charging efficiency or the discharge efficiency is reduced, as well as the life is shortened, so that a cooling water circulation circuit is installed to properly cool the heat.

In addition, the electric driven vehicle has a refrigerant circulation circuit for cooling and heating an indoor space, an air circulation circuit for ventilation of indoor air, and the like, similar to a conventional internal combustion engine vehicle.

As described above, the electric drive vehicle is provided with various kinds of valve devices capable of distributing, controlling or intermitting the fluid flow in the air circulation circuit or the refrigerant circulation circuit as well as the cooling water circulation circuit of the battery.

Among these various types of valve devices, a rotary valve includes a valve body having two or more ports, and a valve member that rotates about a rotation axis within the valve body to selectively open and close two or more ports. These rotary valves are often used in the cooling water circulation circuit of the battery.

An example of such a rotary valve is disclosed in US 6315267 B1. The rotation valve according to the prior art includes a valve body having an inlet port and an outlet port in communication with a valve chamber; A cylindrical valve member installed to rotate between an open position and a closed position in the valve chamber; A resilient seal member interposed between any one of the inlet port and the outlet port and the valve member; A torque motor attached to the valve body to rotate the valve member; And spring means for elastically deflecting the rotor and the valve member of the torque motor to open.

In the related art rotary valve, when the inlet or outlet port of the valve body is opened by the rotation of the valve member, an elastic sealing member is elastically interposed between the valve body port and the valve member, It is configured to be sealed to prevent leakage of the fluid.

However, the conventional rotary valve has a disadvantage in that the leakage of the fluid is badly generated because the elastic force of the elastic sealing member is weak and the sealing property against the inlet port or the outlet port of the valve body is low.

The present invention has been researched and developed in order to overcome the disadvantages of the prior art as described above, it is configured to elastically press the outer surface of the valve member at any one of the inner port surface of the valve body to maintain a constant seal for the port at all times In addition, the object of the present invention is to provide a valve device for an electrically driven vehicle that can reliably block the possibility of leakage.

The present invention for achieving the above object is installed in the fluid circulation circuit of the electric drive vehicle is an electric drive valve device for controlling the circulation of the fluid, having at least two ports on the outer surface, communication with the port A valve body having an internal space therein; A valve member rotatably installed in the inner space of the valve body to open and close the port; And sealing means for sealing the at least one port, wherein the sealing means is provided with a sealing member that is hermetically installed on an inner surface of the port, and is provided at one end of the sealing member to apply an elastic force to the sealing member in an axial direction. It characterized in that it comprises an elastic member for hermetically contacting the other end of the sealing member to the outer surface of the valve member.

The elastic member has a ring body having an opening communicating with a port at a central portion thereof, and a plurality of biasing elements protruding obliquely from the ring body, wherein the plurality of biasing portions are arranged in the circumferential direction of the ring body. Characterized in that spaced apart.

The biasing portion has a connecting portion integrally connected to an inner circumferential edge of the ring body at one end thereof, and a supporting portion bent at an angle to the other end thereof, and the supporting portion is supported in contact with an end of the port fitting connected to the port. It is characterized by.

The ring body has a plurality of fitting protrusions formed on the outer periphery, the plurality of fitting protrusions protrude in the opposite direction of the biasing portion, a plurality of fitting grooves are formed at one end of the sealing member, the fitting protrusion of the ring body Is individually fitted to the fitting grooves of the sealing member.

The outer surface of the sealing member is formed with an annular groove, the annular groove is provided with an annular lip seal (lip seal), the lip seal is an annular fitting body and the fitting to be closely fitted to the inner surface of the annular groove And a lip portion elastically deformable extending in the outer diameter direction from the body, wherein the lip portion is in close contact with the inner surface of the port.

And, the inner surface of the fitting body is characterized in that one or more deformable projections that are elastically deformable are formed in the circumferential direction.

The elastic member is characterized in that the wave spring form.

An annular lip seal is interposed between one end of the sealing member and the elastic member, and the annular lip seal is installed to be supported by one end of the sealing member by a retainer, and the retainer is sealed. And a cylindrical surface fitted to the inner surface of the member, and a support surface provided to extend in the circumferential direction at one end of the cylindrical portion.

According to the present invention, the sealing surface of the sealing member is hermetically contacted with the outer surface of the valve member by biasing the sealing member toward the outer surface of the valve member by the elastic force of the elastic member on the inner surface of any one port of the valve body. It can be kept stable, through which there is an advantage in that the sealability to the port is kept constant at all times and the possibility of leakage can be reliably blocked.

The elastic member according to an embodiment may press the sealing member with a high elastic force toward the valve member by a plurality of biasing parts protruding in an oblique direction from the ring body, thereby ensuring a very strong sealing property between the sealing member and the valve member. There is an advantage that can be.

In addition, the elastic member according to the embodiment is able to press the sealing member with a higher elastic force toward the valve member in a state in which the support portion of the biasing portion projecting in the oblique direction is supported against the port fitting, so that the elastic member is very much between the sealing member and the valve member. There is an advantage that a strong sealability can be assured more reliably.

The elastic member according to an embodiment maintains a state in which the elastic member and the sealing member are integrally coupled to one end of the sealing member through the fitting protrusion and the fitting groove, and thus the separation between the elastic member and the sealing member can be prevented, and thus the elastic member is the sealing member. There is an advantage that can be performed more stably the elastic pressing against.

In addition, the present invention can reliably ensure the circumferential and / or radial sealability between the outer surface of the sealing member and the inner surface of the port as the annular lip seal is installed on the outer surface of the sealing member.

In addition, since the deformation protrusion is formed on the inner surface of the fitting body of the lip seal, when the fitting body of the lip seal is fitted in the annular groove, it is elastically deformed so that the fitting body can be pushed elastically in the outer diameter direction of the annular groove. The end of the lip has the advantage of being able to contact the inner surface of the port more tightly.

The elastic member of the sealing means according to another embodiment consists of a wave spring formed with a plurality of peaks and valleys continuously along the circumferential direction to press one end of the sealing member in the axial direction so that the sealing surface of the sealing member is airtight with the outer surface of the valve member. Can be contacted.

The sealing means according to another embodiment, the lip seal is fitted between the support surface of the retainer and one end of the sealing member, by this installation structure, the elastic member lip seal by applying an elastic force in the axial direction to the support surface of the lip seal and the retainer The lip portion of the port can be more intimately contact with the inner surface, through which there is an advantage that the circumferential and / or radial sealability between the lip seal and the inner surface of the port can be significantly improved.

1 is a perspective view showing an electric valve device for an electric vehicle according to an embodiment of the present invention.

Figure 2 is a side view showing a valve device for an electrically driven vehicle according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is an enlarged view illustrating an enlarged portion B of FIG. 3.

5 is an exploded perspective view showing the valve device for an electric drive vehicle according to an embodiment of the present invention.

Figure 6 is a perspective view showing a sealing means of the valve device for an electric drive vehicle according to an embodiment of the present invention.

Figure 7 is an exploded perspective view showing a sealing means of the valve device for an electric drive motor according to an embodiment of the present invention.

8 shows a sealing means of an alternative structure to FIG. 4.

9 is a perspective view of the sealing means according to an alternative embodiment of the invention.

10 is an exploded perspective view showing a sealing means according to an alternative embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size of the components, the thickness of the line, and the like shown in the drawings referred to for describing the present invention may be somewhat exaggerated for ease of understanding. In addition, terms used in the description of the present invention are defined in consideration of the functions in the present invention and may vary according to a user, an operator's intention, customs, and the like. Therefore, the definition of this term should be based on the contents throughout the specification.

1 to 7 show an electrically operated valve device for an automobile according to an embodiment of the present invention.

As shown in Figs. 1 to 3, the valve device for an electrically driven automobile according to the present invention is rotatable in the valve body 10 and the valve body 10 having two or

more ports

11 and 12. It includes a valve member 20 is installed, and at least one sealing means 30 installed in at least one port (11, 12) of the valve body (10).

As shown in FIG. 3, the valve body 10 has two or

more ports

11 and 12 through which fluid flows in and out. In addition, the valve body 10 has an internal space 15 communicating with the

ports

11 and 12 therein. 1 to 3 illustrate that two

ports

11 and 12 are formed, but the present invention is not limited thereto, and the number and location of the ports can be configured in various ways.

The valve body 10 has two or

more flanges

13, 14 protruding from the outer surface thereof, as shown in FIGS. 1 to 3, and each

port

11, 12 has each flange 13, as shown in FIG. 3. 14) are formed separately inside. The

flange portions

16a and 17a of the

port fittings

16 and 17 are individually coupled to the

flanges

13 and 14 of the valve body 10. Meanwhile, each of the

port fittings

16 and 17 has a fluid pipe 18 of a fluid circulation circuit such as a refrigerant circulation circuit, a coolant circulation circuit, and the like of an electrically driven vehicle (eg, a vehicle driven by electricity such as a secondary battery and a fuel cell). 19) are individually connected.

The valve member 20 is rotatably installed in the inner space 15 of the valve body 10 by the valve shaft 25, and the upper end of the valve shaft 25 protrudes through the upper surface of the valve body 10. In addition, such a valve shaft 25 may be rotated by power as a drive motor or other electric element is connected to the protruding upper end thereof.

3 and 5, the valve member 20 has one or

more openings

21 and 22 on its outer surface, and the outer surface of the valve member 20 is formed to be curved. The valve member 20 is provided with a valve shaft 25 at the center thereof, and as the valve member 20 rotates through the valve shaft 25, the

openings

21 and 22 of the valve member 20 are valve bodies. By selectively communicating with each

port

11, 12 of 10, each

port

11, 12 of the valve body 10 can be selectively opened and closed.

The sealing means 30 may be installed in at least one

port

11, 12 of the valve body 10, and the sealing means 30 may ensure the sealing property of the one or

more ports

11, 12. Can be.

The sealing means 30 includes a sealing member 31 which is airtightly installed on the inner surfaces of the

ports

11 and 12, and at least one elastic member 32 installed at one end of the sealing member 31.

The sealing member 31 has a cylindrical structure having a hollow portion 31a formed so that fluid flows through and an outer surface corresponding to an inner surface of the

ports

11 and 12. The outer surface of the sealing member 31 may be in close contact with the inner surface of the ports (11, 12).

The sealing member 31 is provided with an elastic member 32 at one end thereof. Then, at the other end of the sealing member 31, a sealing surface 31b is formed in hermetic contact with the outer surface of the valve member 15.

The elastic member 32 is installed at one end of the sealing member 31 to apply the elastic force to the sealing member 31 along its axial direction to seal the sealing surface 31b of the sealing member 31 on the outer surface of the valve member 20. Is configured to contact. As such, the sealing member 31 is biased toward the outer surface of the valve member 20 by the elastic force of the elastic member 32, so that the sealing surface 31b of the sealing member 31 is formed on the outer surface of the valve member 20. In close contact with the contact can be kept stable.

Meanwhile, the sealing member 31 is made of a material having a low coefficient of friction and good chemical resistance, such as polytetrafluoroethylene (PTFE), etc. As such, the sealing member 31 is made of a material having a low coefficient of friction. Accordingly, the frictional load between the outer surface of the valve member 20 and the sealing member 31 during the rotary contact (dynamic load) can be reduced to significantly reduce the wear of the sealing member 31.

According to an embodiment, as shown in FIGS. 4 to 7, the elastic member 32 includes a ring body 33 having an opening 33a in communication with the

ports

11 and 12 at a central portion thereof, and a ring body 33. ) And a plurality of biasing portions 34 protruding outwardly.

The ring body 33 has an annular plate spring structure, and an opening 33a communicating with the

ports

11 and 12 is formed at the center thereof. The ring body 33 may be made of an elastic material having a predetermined elastic modulus, such as SUS.

The plurality of biasing portions 34 protrude outwardly from the ring body 33, and the plurality of biasing portions 34 are disposed to be spaced apart in the circumferential direction of the ring body 33.

Thus, by the biasing portion 34 protruding in an oblique direction from the ring body 33, the sealing member 31 can be pressed with a strong elastic force toward the valve member 20, the sealing member 31 and the valve member 20 There is an advantage that can ensure the sealing in the circumferential direction and / or radial direction.

This biasing portion 34 is molded through a lancing process on the inner circumferential surface of the ring body 33. Specifically, a part of the inner circumferential surface of the ring body 33 is formed to protrude in an inclined direction with respect to the plane of the ring body 33 through a lancing process, that is, a shearing and bending process. do.

Accordingly, as shown in FIGS. 7 and 8, the biasing portion 34 protruding in an oblique direction with respect to the plane of the ring body 33 is integrally connected to an inner circumferential edge of the ring body 33 at one end thereof. 34a) is formed, and a support portion 34b bent at a predetermined angle is formed at the other end thereof. The support portion 34b of this biasing portion 34 is supported in contact with the ends of the

port fittings

16 and 17 connected to the

ports

11 and 12.

As described above, in the elastic member 32 according to the exemplary embodiment of the present invention, as shown in FIG. 4, the support part 34b of the biasing part 34 protruding in the inclined direction is supported by the

port fittings

16 and 17. Since the sealing member 31 can be pressed with a higher elastic force toward the valve member 20 in the closed state, a very strong sealing property between the sealing member 31 and the valve member 20 can be more surely ensured. have.

In addition, the ring body 33 has a plurality of fitting protrusions 35 formed on the outer circumference thereof, and the plurality of fitting protrusions 35 protrude in a direction opposite to the biasing portion 34. In addition, the sealing member 31 has a plurality of fitting grooves 36 formed at one end thereof, and the fitting protrusion 35 of the ring body 33 is individually fitted to the fitting grooves 36 of the sealing member 31. Can be.

Through the fitting protrusion 35 and the fitting groove 35, the elastic member 32 is maintained integrally coupled to one end of the sealing member 31 so that the space between the elastic member 32 and the sealing member 31 is maintained. It can be prevented, through which the elastic member 32 can perform a more stable elastic pressing on the sealing member (31).

The outer surface of the sealing member 31 is formed with an annular groove 38, and the annular groove 38 is provided with an annular lip seal 39 so that the outer surface and the port 11 of the sealing member 31 are formed. Circumferential and / or radial sealing can be assured between the inner surfaces of 12).

The lip seal 39 has an annular fitting body 39a which is fitted in close contact with the inner surface of the annular groove 38, and a lip portion 39b, lip extending outwardly elastically deformable from the fitting body 39a. portion).

The lip seal 39 is made of a material that is easily elastically deformed, such as ethylene propylene diene monomer (EPDM), to ensure more hermetic sealing.

By the configuration of the lip seal 39, when the fitting body 39a is fitted in the annular groove 38, the lip portion 39b is elastically deformed and its ends are hermetically sealed with the inner surfaces of the

ports

11 and 12. Can be contacted.

4 and 7, one or more deformable projections 39c elastically deformable are formed in an annular shape along the circumferential direction on the inner surface of the fitting body 39a, and the deformable projections 39c are Since the fitting body 39a is elastically deformed when the fitting body 39a is fitted in the annular groove 38, the fitting body 39a can be pushed elastically in the outer diameter direction of the annular groove 38, so that the end of the lip 39b is More intimate contact with the inner surfaces of the

ports

11 and 12 is possible.

As shown in FIGS. 8 to 10, the elastic member 42 according to another embodiment includes a wave spring in which a plurality of peaks and valleys are continuously formed along the circumferential direction to press one end of the sealing member 31 in the axial direction. Thus, the sealing surface 31b of the sealing member 31 is installed to be in airtight contact with the outer surface of the valve member 20.

An annular lip seal 39 is interposed between the elastic member 42 and the sealing member 31, and the annular lip seal 39 is connected to one end of the sealing member 31 by a retainer 45. It is installed to be supported.

The retainer 45 has a cylindrical portion 45a which is hermetically fitted to the inner surface of the sealing member 31 and a support surface 45b provided to extend in the circumferential direction at one end of the cylindrical portion 45a.

When the cylindrical portion 45a of the retainer 45 is fitted to the inner surface of the sealing member 31, the lip seal 39 is fitted as one end of the support surface 45b and the sealing member 31 are formed to be spaced apart from each other. The annular groove may be formed in the circumferential direction.

The lip seal 39 is fitted between the support surface 45b of the retainer 45 and one end of the sealing member 31, and the elastic member 42 is the lip seal 39 and the retainer 45 by this installation structure. By applying an elastic force in the axial direction to the support surface 45b of the lip portion 39, the lip portion 39b of the lip seal 39 can be in more airtight contact with the inner surface of the

ports

11, 12, through which the lip seal 39 and the port ( The sealing in the circumferential direction and / or the radial direction can be greatly improved between the inner surfaces of 11, 12).

As mentioned above, specific embodiments of the present invention have been described, but the present invention is not limited to the embodiments disclosed in the present specification and the accompanying drawings, and may be variously modified by those skilled in the art without departing from the technical spirit of the present invention. .

Claims

An electric drive valve device for an electric drive that is installed in a fluid circulation circuit of an electric vehicle to control the circulation of fluid.

A valve body having at least two ports on an outer surface and having an inner space in communication with the ports;

A valve member rotatably installed in the inner space of the valve body to open and close the port; And

Sealing means for sealing the at least one port;

The sealing means,

A sealing member installed in an airtight manner on an inner surface of the port; And

And an elastic member provided at one end of the sealing member to elastically contact the other end of the sealing member with an outer surface of the valve member by applying an elastic force in the axial direction to the sealing member.
The method according to claim 1,

The elastic member has a ring body having an opening communicating with a port at a central portion thereof, and a plurality of biasing portions protruding in an oblique direction with respect to a plane of the ring body, wherein the plurality of biasing portions are formed in the ring body. The valve device for the electric drive motor, characterized in that spaced apart in the circumferential direction of the.
The method according to claim 2,

The ring body has a plurality of fitting protrusions formed on the outer periphery, the plurality of fitting protrusions protrude in the opposite direction of the biasing portion, a plurality of fitting grooves are formed at one end of the sealing member, the fitting protrusion of the ring body The valve device for the electric drive motor, characterized in that the fitting is individually fitted to the fitting grooves of the sealing member.
The method according to claim 1,

The outer surface of the sealing member is formed with an annular groove, the annular groove is provided with an annular lip seal (lip seal),

The lip seal has an annular fitting body that fits tightly to an inner surface of the annular groove and a lip portion that is elastically deformable in an outer diameter direction from the fitting body, wherein the lip portion has an inner surface of the port. Electrically-driven automobile valve device, characterized in that in close contact with.
The method according to claim 1,

The elastic member is an electric drive valve device for an electric vehicle, characterized in that the wave spring.
The method according to claim 5,

An annular lip seal is interposed between one end of the sealing member and the elastic member, and the annular lip seal is installed to be supported at one end of the sealing member by a retainer.

And the retainer has a cylindrical portion fitted to the inner surface of the sealing member, and a support surface provided to extend in the circumferential direction at one end of the cylindrical portion.