KR20220087218A - Flow control valve apparatus - Google Patents

Abstract

The present invention introduces a flow control valve device in which a plurality of cooling medium distribution paths are selectively switched, and when the cooling medium distribution path is abnormally closed, the cooling medium is bypassed to prevent overtemperature of the cooling medium.

Description

Flow control valve device {FLOW CONTROL VALVE APPARATUS}

The present invention relates to a flow control valve device that selectively switches a plurality of cooling medium distribution paths and prevents overtemperature of the cooling medium by bypassing the cooling medium when the cooling medium distribution paths are abnormally closed.

An electric vehicle is a vehicle in which the driving energy of the vehicle is obtained from electric energy, not from the combustion of fossil fuels, like conventional vehicles. Electric vehicles have the advantage of no exhaust gas and very little noise, but have not been put to practical use due to problems such as the heavy weight of the battery and charging time. Its development is accelerating again.

In general, an electric vehicle driven by a motor is provided with an inverter, an LDC for converting DC power into AC power, a charger, and the like, and a cooling system capable of always maintaining an appropriate temperature due to their heat generation characteristics is essential.

To this end, a water pump for cooling water circulation is provided in the cooling system, and the cooling water discharged from the water pump passes through a motor and related electrical devices and then circulates through a heat source, thereby protecting various electrical devices having heat generation characteristics from overheating. .

Accordingly, recently, a multi-directional valve for controlling the flow of cooling water has been developed. Such a valve requires precise control as the number of circulation paths of cooling water increases, and in particular, when the valve fails, the flow of cooling water is blocked, resulting in overheating in various electronic devices.

Accordingly, there is a need for a technology for protecting electric devices from overtemperature by maintaining the flow of cooling water even if the valve fails.

The matters described as the background art above are only for improving the understanding of the background of the present invention, and should not be accepted as acknowledging that they correspond to the prior art already known to those of ordinary skill in the art.

KR 10-2010-0102939 A (2010.09.27)

The present invention has been proposed to solve this problem, in which a plurality of cooling medium distribution paths are selectively switched, and when the cooling medium distribution paths are abnormally closed, the cooling medium is bypassed to prevent overtemperature of the cooling medium. An object of the present invention is to provide a flow control valve device.

A flow control valve device according to the present invention for achieving the above object is provided with a plurality of distribution ports through which a cooling medium flows, and a control valve for selectively allowing the cooling medium to flow through the plurality of distribution ports is provided therein. housing; a bypass passage connected to a specific distribution port among the plurality of distribution ports so that the cooling medium is bypassed to another distribution port without passing through the valve housing; and a bypass unit having a bypass valve connected therein, and having a bypass valve that opens when the cooling medium is not circulated to a specific distribution port in a state in which the circulation of the cooling medium through the bypass flow is intercepted. do.

The bypass flow passage is characterized in that it is connected in communication with the distribution port connected to the outlet side of the radiator among the plurality of distribution ports.

An actuator for controlling the position of the control valve is provided in the valve housing, and the bypass valve is opened when the actuator fails.

The bypass valve is characterized in that it is opened when the temperature of the cooling medium inside the valve housing reaches the operating temperature range.

The bypass unit is provided with a connection port to which the bypass flow path is connected, and a circulation space in which a bypass valve is provided is formed therein.

The bypass part has an opening path that is opened to the outside through the circulation space in the internal space of the valve housing, and a bypass valve is installed between the internal space of the valve housing and the circulation space in the opening path, and a stopper is provided at the end of the opening path. It is characterized in that an additional is installed to seal the opening path.

The bypass valve is installed between the internal space of the valve housing and the circulation space of the bypass unit to seal between the internal space and the circulation space and generate power, and a valve unit that receives power from the driving unit to open and close the circulation space; It is characterized in that it consists of an elastic part that is in contact with the valve part and the stopper part and elastically supports the valve part.

The driving unit generates power when the temperature of the cooling medium inside the valve housing reaches the operating temperature range, thereby moving the valve unit to open the distribution space.

The valve part is linearly moved by receiving power from the driving part in the opening path, and a bypass hole matching the circulation space is formed.

In the flow control valve device having the above-described structure, a plurality of cooling medium distribution paths are selectively switched, and when the cooling medium distribution paths are abnormally closed, the cooling medium is bypassed to prevent overtemperature of the cooling medium.

1 is a block diagram showing a distribution path of a cooling medium;
2 is a view showing a flow control valve device according to the present invention.
3 to 4 are views showing the closed state of the bypass valve in the flow control valve device shown in FIG.
5 to 6 are views showing an open state of the bypass valve in the flow control valve device shown in FIG.

Hereinafter, a flow control valve device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram showing a distribution path of a cooling medium, FIG. 2 is a view showing a flow control valve device according to the present invention, and FIGS. 3 to 4 are the closing of the bypass valve in the flow control valve device shown in FIG. It is a view showing a state, and FIGS. 5 to 6 are views showing an open state of the bypass valve in the flow control valve device shown in FIG. 1 .

The flow control valve device 100 of the present invention switches the distribution path of the cooling medium, and as shown in FIG. 1 , the cooling medium is transferred to the radiator 2 and the high voltage battery 3 through the driving of the electric pump 1 . , electronic components (4), ion filter (5), etc. are selectively circulated through a plurality of paths or configured to control the amount of circulation. Here, the cooling medium may be cooling water.

The present invention is to prevent the temperature of the cooling medium from being excessively increased as the flow of the cooling medium is forcibly interrupted abnormally when the flow control valve fails, so that the fail-safety of the flow control valve device is implemented.

For this purpose, the flow control valve device according to the present invention is provided with a plurality of distribution ports 11 through which a cooling medium flows, as shown in FIGS. 2 to 3 , and is selectively cooled by the plurality of distribution ports 11 therein. a valve housing 10 provided with a control valve 20 for allowing the medium to flow; a bypass passage 30 connected to a specific distribution port 11 among the plurality of distribution ports 11 so that the cooling medium is bypassed to another distribution port 11 without passing through the valve housing 10; and the bypass flow path 30 are connected, and the bypass valve opens when the cooling medium cannot flow through the specific distribution port 11 in a state in which the circulation of the cooling medium through the bypass flow path 30 is controlled. (50) is provided with a bypass unit 40; includes.

As described above, in the present invention, the control valve 20 is provided inside the valve housing 10, and the flow direction or flow amount of the cooling medium flowing through the plurality of distribution ports 11 is determined according to the rotational position of the control valve 20. . A hose for circulating a cooling medium to a radiator 2, a high voltage battery 3, an electric component 4, an ion filter 5, etc. may be connected to the plurality of distribution ports 11 provided in the valve housing 10, respectively. have.

In particular, a bypass unit 40 having a bypass valve 50 therein is installed in the valve housing 10 , and as the bypass flow path 30 is connected to the bypass unit 40 , a specific distribution port ( 11) and another distribution port 11 are connected so that the cooling medium is bypassed without flowing through the inside of the valve housing 10 .

Here, the bypass unit 40 may be formed integrally with the valve housing 10 to extend from the valve housing 10 .

In addition, the bypass flow path 30 may be connected in communication with the distribution port 11 connected to the outlet side of the radiator (2) of the plurality of distribution ports (11). That is, in the flow of the cooling medium, it is important that the cooling medium cooled through the radiator 2 is supplied to each component requiring cooling. It may be connected in communication with the port 11 .

Accordingly, the bypass flow path 30 is connected to the distribution port 11 connected to the outlet side of the radiator (R) and the distribution port 11 connected to the electric pump 1, so that the cooling medium can be bypassed. By providing, the flow of the cooling medium can be maintained by the operation of the electric pump 1, and the cooling medium of the cooling medium as the cooling medium cooled through the radiator 2 is provided to each component requiring cooling. Problems caused by overheating are prevented.

On the other hand, when the cooling medium does not flow inside the valve housing 10 , the cooling medium is bypassed without passing through the inside of the valve housing 10 by the bypass flow path 30 and the bypass unit 40 . to keep the flow going. For example, the abnormal situation of the valve housing 10 is that the actuator 60 for controlling the position of the control valve 20 is malfunctioning and the control valve 20 is abnormally located, or the control valve 20 is damaged or foreign substances. There may be a situation in which the circulation port 11 is blocked by this and the cooling medium cannot be circulated.

When such an abnormal situation occurs, the bypass valve 50 provided inside the bypass unit 40 is opened to allow the circulation of the cooling medium through the bypass flow path 30 , so that the cooling medium is transferred to the bypass flow path 30 . ) is moved from a specific distribution port 11 to another distribution port 11 through ), so that each part requiring each cooling can be smoothly cooled. That is, as the bypass valve 50 inside the bypass unit 40 maintains a state in which the circulation of the cooling medium through the bypass flow path 30 is controlled, the cooling medium can be smoothly controlled according to the position of the control valve 20 . The flow is maintained, and when an abnormal situation occurs, the bypass valve 50 is opened and the cooling medium flows from the specific distribution port 11 to the other distribution port 11 through the bypass flow path 30. this can be maintained.

When describing the present invention described above in detail, the valve housing 10 is provided with an actuator 60 for controlling the position of the control valve 20, and the bypass valve 50 operates when the actuator 60 fails. do.

That is, when the actuator 60 is abnormally operated due to a failure, the cooling medium cannot normally flow to the distribution port 11 as the position of the control valve 20 is not properly positioned. In particular, when the control valve 20 blocks the flow of the cooling medium circulated in the radiator 2 due to a failure of the actuator 60, overtemperature of the cooling medium is generated.

Therefore, when a failure of the actuator 60 occurs, the bypass valve 50 is operated to open, thereby allowing the cooling medium to flow through the bypass flow path 30 so that the cooling medium does not pass through the inside of the valve housing 10 and bypasses it. It can be passed through and provided to each component requiring cooling.

Meanwhile, in another embodiment, the bypass valve 50 may be opened when the temperature of the cooling medium inside the valve housing 10 reaches an operating temperature range. That is, the bypass valve 50 may be configured as a thermostat, and when the temperature of the cooling medium inside the valve housing 10 reaches the operating temperature range, it is opened and operated, so that the cooling medium through the bypass flow path 30 is distribution is allowed.

When the cooling medium normally circulates through each cooling system, the temperature of the cooling medium is adjusted as it circulates through the radiator 2 . However, when the cooling medium is not circulated normally, the temperature of the cooling medium is excessively increased as smooth cooling of the cooling medium is not performed. Accordingly, the temperature of the cooling medium inside the valve housing 10 rises, and the bypass valve 50 operates to open when the temperature of the cooling medium inside the valve housing 10 reaches the operating temperature range, so that the radiator 2 ), the cooling medium having passed through bypasses the valve housing 10 and circulates to other cooling systems, so that the temperature-controlled cooling medium is supplied to each cooling system.

In this way, the bypass valve 50 is normally closed in the bypass unit 40 to control the circulation of the cooling medium through the bypass flow path 30 , failure of the actuator 60 or overtemperature of the cooling medium When it occurs, the opening operation allows the circulation of the cooling medium through the bypass flow path 30, so that the cooling medium whose temperature is adjusted as it passes through the radiator can be normally distributed to each component requiring cooling. That is, when the cooling medium is not circulated normally, the circulation of the cooling medium through the bypass flow path 30 is allowed to maintain a smooth flow of the cooling medium.

The bypass structure of the above-described cooling medium will be described in detail. As can be seen in FIG. 4 , the bypass unit 40 is provided with a connection port 41 to which the bypass flow path 30 is connected, and the bypass unit 40 is provided therein. A distribution space 42 in which the pass valve 50 is provided may be formed.

That is, the bypass unit 40 is installed in the valve housing 10 , and a connection port 41 to which the bypass flow path 30 is connected is provided. These connection ports 41 may be configured as a pair and are arranged to extend in a straight line so that the cooling medium smoothly flows through the bypass unit 40 through the connection port 41 . In addition, a circulation space 42 in which the bypass valve 50 is provided is formed inside the bypass unit 40 . That is, in the bypass unit 40 , the cooling medium may be circulated through the connection port 41 and the distribution space 42 , and the circulation of the cooling medium is selectively intercepted depending on whether the bypass valve 50 is opened or closed. is allowed

In particular, in the bypass unit 40 , an opening passage 43 that is opened to the outside through the circulation space 42 in the inner space 12 of the valve housing 10 is formed, and the valve housing in the opening passage 43 is formed. A bypass valve 50 is installed between the internal space 12 and the distribution space 42 of the 10 , and a stopper 44 is installed at the end of the opening path 43 to seal the opening path 43 . can do.

As shown in FIG. 4 , the bypass unit 40 is opened in a straight line from the outside toward the inner space 12 of the valve housing 10 to form an opening path 43 , thereby opening the opening path 43 . Through the bypass valve 50 can be installed in the distribution space (42). In particular, as the opening path 43 is opened in a straight line from the outside of the bypass unit 40 toward the inside of the valve housing 10 , the processing of the opening path 43 is easy. In addition, through the operation of inserting the bypass valve 50 through the opening path 43 from the outside of the bypass unit 40, between the internal space 12 and the distribution space 42 of the valve housing 10 The bypass valve 50 can be easily installed, and as the stopper 44 is installed at the end of the opening path 43 , the opening path 43 is closed so that the cooling medium flows smoothly through the circulation space 42 . can

Here, the bypass valve 50 is installed between the internal space 12 of the valve housing 10 and the circulation space 42 of the bypass unit 40 to pass between the internal space 12 and the circulation space 42 . The driving unit 51 for sealing and generating power, the valve unit 52 for opening and closing the distribution space 42 by receiving power from the driving unit 51, and the valve unit 52 and the stopper 44 are in contact with It may be composed of an elastic part 53 that elastically supports the valve part 52 .

The driving unit 51 generates power when the temperature of the cooling medium inside the valve housing 10 reaches the operating temperature range, thereby moving the valve unit 52 by the power to open the distribution space 42 . can be composed of Accordingly, the driving unit 51 is installed between the internal space 12 of the valve housing 10 and the circulation space 42 of the bypass unit 40 to receive the temperature of the cooling medium in the internal space 12, and , it is possible to transmit power to the valve of the distribution space (42). Here, the operating temperature range of the driving unit 51 may be set by pre-figuring the temperature rise due to the abnormal circulation of the cooling medium through an experiment.

In addition, the driving unit 51 is installed between the inner space 12 of the valve housing 10 and the distribution space 42 of the bypass unit 40 to seal between the inner space 12 and the distribution space 42 . . Due to this, the driving unit 51 is in contact with the cooling medium inside the valve housing 10 so that the operation according to the temperature change can be determined, and the internal space 12 of the valve housing 10 and the circulation of the bypass unit 40 . The circulation of the cooling medium between the spaces 42 is blocked. To this end, the driving unit 51 may be further provided with a sealing member for airtightness on the circumferential surface.

On the other hand, the driving unit 51 is provided with a valve unit 52 that moves linearly when power is generated, and the valve unit 52 is elastically supported by the elastic unit 53 in contact with the stopper 44 . That is, the valve part 52 is positioned to close the distribution space 42 as the driving part 51 is not operated when the temperature of the cooling medium inside the valve housing 10 is less than the operating temperature range. At this time, the valve part 52 may be elastically supported by the elastic part 53 to maintain a position to close the distribution space 42 .

Here, when the temperature of the cooling medium inside the valve housing 10 reaches the operating temperature range, the driving unit 51 is operated to transmit power to the valve unit 52 . In this way, when the driving unit 51 is operated, the valve unit 52 is moved while compressing the elastic unit 53 , and the valve unit 52 is moved to open the distribution space 42 , so that the cooling medium is transferred to a specific distribution port ( In 11), it is distributed to another distribution port 11 through the bypass passage 30 through the distribution space 42 .

The valve unit 52 is linearly moved by receiving power from the driving unit 51 in the opening path 43 , and a bypass hole 52a matching the distribution space 42 may be formed. That is, the valve part 52 may be formed in a cap shape, and a bypass hole 52a is formed on the circumferential surface, so that the bypass hole 52a and the connection port 41 are matched according to the moving position to match the distribution space. (42) so that the cooling medium is selectively distributed. In addition, the valve part 52 may be stably elastically supported by the elastic part 53 by wrapping the elastic part 53 as it is formed in a cap shape.

The present invention described above can be operated as follows.

3 to 4 , when the actuator 60 is normal and the temperature of the cooling medium is maintained at a normal temperature, the bypass valve 50 is not operated, so that the valve unit 52 operates the bypass unit 40 ) of the distribution space 42 is maintained in a closed state. Accordingly, the cooling medium introduced through the distribution port 11 connected to the outlet side of the radiator passes through the control valve 20 inside the valve housing 10 and is distributed to the other distribution port 11 .

On the other hand, as shown in FIGS. 5 to 6 , when an abnormality occurs in the actuator 60 or the cooling medium is overheated, the driving unit 51 of the bypass valve 50 is operated to push the valve unit 52 . . That is, when the cooling medium does not flow smoothly inside the valve housing 10, the valve part 52 of the bypass valve 50 is moved to open the circulation space 42 of the bypass part 40. Accordingly, the cooling medium introduced through the distribution port 11 connected to the outlet side of the radiator passes through the distribution space 42 of the bypass unit 40 through the bypass passage 30 and is distributed to the other distribution port 11 . can be

In the flow control valve device having the above-described structure, a plurality of cooling medium distribution paths are selectively switched, and by bypassing the cooling medium when the cooling medium distribution path is abnormally closed, the cooling medium is smoothly supplied to each cooling system. This prevents overheating of the cooling medium and prevents thermal damage to each component.

Although the present invention has been shown and described in relation to specific embodiments, it is within the art that the present invention can be variously improved and changed without departing from the spirit of the present invention provided by the following claims. It will be obvious to those of ordinary skill in the art.

10: valve housing 11: distribution port
20: control valve 30: bypass flow path
40: bypass unit 41: connection port
42: Distribution space 43: Opening road
44: stopper 50: bypass valve
51: driving unit 52: valve unit
52a: bypass hole 53: elastic part
60: actuator

Claims (9)

a valve housing having a plurality of distribution ports through which the cooling medium is distributed, and having a control valve therein for selectively allowing the cooling medium to flow through the plurality of distribution ports;
a bypass passage connected to a specific distribution port among the plurality of distribution ports so that the cooling medium is bypassed to another distribution port without passing through the valve housing; and
A bypass unit having a bypass valve connected therein, which is opened when the cooling medium is not circulated to a specific distribution port in a state in which the circulation of the cooling medium through the bypass passage is intercepted; Flow control valve device. The method according to claim 1,
The bypass flow passage is a flow control valve device, characterized in that the flow control valve device, characterized in that connected in communication with the distribution port connected to the outlet side of the radiator among the plurality of distribution ports. 3. The method according to claim 2,
The bypass flow path is a flow control valve device, characterized in that connected to the distribution port connected to the outlet side of the radiator and the distribution port connected to the electric pump. The method according to claim 1,
An actuator for controlling the position of the control valve is provided in the valve housing,
The bypass valve is a flow control valve device, characterized in that it is opened when the actuator fails. The method according to claim 1,
The bypass valve is a flow control valve device, characterized in that the opening operation when the temperature of the cooling medium inside the valve housing reaches the operating temperature range. The method according to claim 1,
A flow control valve device, characterized in that the bypass unit is provided with a connection port to which the bypass flow path is connected, and a distribution space in which the bypass valve is provided is formed. 7. The method of claim 6,
The bypass part has an opening path that passes through the circulation space in the internal space of the valve housing and opens to the outside, and a bypass valve is installed between the internal space of the valve housing and the circulation space in the opening path, and a stopper is provided at the end of the opening path. A flow control valve device, characterized in that a part is installed to seal the opening path. 8. The method of claim 7,
The bypass valve is installed between the internal space of the valve housing and the circulation space of the bypass unit to seal between the internal space and the circulation space and generate power; a valve unit receiving power from the driving unit to open and close the circulation space; A flow control valve device, characterized in that it consists of an elastic part which is in contact with the valve part and the stopper part and elastically supports the valve part. 9. The method of claim 8,
The drive unit generates power when the temperature of the cooling medium inside the valve housing reaches the operating temperature range, thereby moving the valve unit to open the distribution space.

Images