KR20220090642A - Integrated electronic valve for expansion and switching direction - Google Patents

Abstract

The present invention relates to an integrated electronic expansion and direction switching valve, and in particular, it is possible to form a flow path for supplying a refrigerant by switching from one input port to one of two output ports, and to form an expansion gap to supply the refrigerant In order to provide a small valve that can be switched to an expanded state to expand or a fully opened state to circulate as it is without expanding the refrigerant, it is made in a block shape and has an input port 110 to which refrigerant is supplied on one side and the other side A flow path connecting the first output port 120 and the second output port 130 through which the refrigerant is discharged to the input port 110 , the first output port 120 , and the second output port 130 is internal a valve body 100 formed on the; It is formed in a plate shape and is fixed non-rotatably in the flow path of the valve body 100 , and through-holes 210 and 310 extending in the circumferential direction are formed and positioned between the input port 110 and the first output port 120 . and a second valve plate 300 positioned between the first valve plate 200 and the input port 110 and the second output port 130; It consists of a disk shape and is located on the outer periphery side to be connected to the sector-shaped open holes 410 and 510 with the center cut off and the open holes 410 and 510, and has a predetermined radial width and extends along the circumferential direction. The recesses 420 and 520 are formed, the first rotary valve 400 positioned to be stacked on the lower side of the first valve plate 200 and the second rotary valve positioned to be stacked on the upper side of the second valve plate 300 . (500) and; Located between the first rotary valve 400 and the second rotary valve 500, the first rotary valve 400 by elastically spaced apart the interval between the first rotary valve 400 and the second rotary valve 500 an elastic body 600 in close contact with the lower surface of the first valve plate 200 and the second rotary valve 500 in close contact with the upper surface of the second valve plate 300; It is characterized in that it includes a drive shaft 700 connected to the center of the first rotary valve 400 and the second rotary valve 500 to rotate integrally, thereby simplifying the configuration of a heat pump applicable to a vehicle air conditioner. It enables precise control of air conditioners while lowering production costs, and in particular, contributes to product miniaturization and maximizes product processability and productivity.

Description

Integrated electronic valve for expansion and switching direction

The present invention relates to an integrated electronic expansion and direction switching valve. In particular, by switching from one input port to one of two output ports, a flow path for supplying a refrigerant can be formed, and an expansion gap is formed to expand the refrigerant. This is to provide a small valve that can be switched to the fully open state that circulates the refrigerant without expanding or expanding the refrigerant. It relates to a device that enables precise control and, in particular, not only contributes to product miniaturization, but also maximizes processability and productivity of the product.

In general, a refrigeration cycle includes a compressor, a condenser, an expansion valve, and an evaporator, and is widely used for cooling a refrigerator or an air conditioner for air conditioning by circulating a refrigerant.

Here, the expansion valve constituting the refrigeration cycle is a valve that reduces the high-temperature, high-pressure liquid refrigerant condensed and liquefied in the condenser to a pressure that can cause evaporation by throttling. plays a role in regulating the supply of

Recently, by improving the refrigeration cycle and configuring a heat pump that circulates the refrigerant in the reverse direction, it is also used as a heat source for a heater or an air conditioner for heating.

According to the configuration of the heat pump, conventionally, an expansion valve for cooling and an expansion valve for heating were respectively configured. .

Accordingly, a three-way expansion valve that expands while passing the refrigerant from one input port to one of the two output ports along with a two-way expansion valve that expands while passing the refrigerant in both the forward and reverse directions has been developed.

Patent Document 1, Korean Patent Publication No. 2011-0043128, Patent Document 2, Korean Patent Registration No. 10-0835259, and Patent Document 3, Korean Patent Publication No. 10-0432158, have two A technique of expanding the refrigerant while switching the refrigerant to any one of the above output ports is disclosed.

However, the conventional expansion valve disclosed in Patent Documents 1 to 3 simply focuses on communicating any one of two or more output ports from one input port, and forms an expansion gap of an appropriate size to expand the refrigerant. There was a problem in the prior art that it was impossible to adjust the expansion state to expand and the fully open state to allow the refrigerant to pass through without expansion.

In addition to this, the conventional expansion valve has a complicated structure, which not only reduces the workability and productivity of the product, but also has a technical problem in that it is difficult to miniaturize it due to a limitation in reducing its volume.

In addition, due to the vertical asymmetry of the valve, non-uniform refrigerant pressure acts up and down, and the outer diameter of the rotary valve must be increased for accurate flow path control. In this case, a relatively large torque is required to rotate the rotary valve, There was also a problem that the motor of the must be adopted.

Domestic Patent Publication No. 2011-0043128 Domestic Registered Patent Publication No. 10-0835259 Domestic Registered Patent Publication No. 10-0432158

The present invention is to solve the above problems, and by simplifying the configuration of a heat pump applicable to an air conditioner for a vehicle, it enables precise control of the air conditioner while lowering the production cost. And it is to provide an electronic expansion and direction switching integrated valve that can maximize productivity.

The electronic expansion and direction switching integrated valve according to the present invention is formed in a block shape, and an input port to which a refrigerant is supplied to one side, a first output port and a second output port through which the refrigerant is discharged to the other side, the input port, a valve body having a flow path communicating the first output port and the second output port formed therein; The first valve plate and the input port and the first valve plate formed in a plate shape, non-rotatably fixed in the flow path of the valve body, with a through hole extending in the circumferential direction formed between the input port and the first output port a second valve plate positioned between the second output ports; It is made of a disk shape and has a sector-shaped opening with a center cut off, and an expansion recess located on the outer periphery side to be connected to the opening hole and extending in the circumferential direction with a predetermined radial width is formed, the first valve plate a first rotary valve positioned to be stacked on a lower side and a second rotary valve positioned to be stacked on an upper side of the second valve plate; It is located between the first rotary valve and the second rotary valve, and elastically spaced apart a distance between the first rotary valve and the second rotary valve to bring the first rotary valve into close contact with the lower surface of the first valve plate, and , an elastic body for adhering the second rotary valve to the upper surface of the second valve plate; It is achieved by including a drive shaft connected to the center of the first rotary valve and the second rotary valve to rotate.

At this time, it is preferable that an airtight member made of an elastic airtight material is additionally provided on the contact surface with the first valve plate in the first rotary valve and the contact surface with the second valve plate in the second rotary valve. do.

In addition, a step motor for rotating the output shaft according to the electrical signal; The small gear and the gear wheel having a larger diameter than the small gear are integrally formed, and a driving member including a transmission gear provided between the output shaft of the step motor and the drive shaft is additionally provided, the output shaft rotation speed of the step motor It is preferable to shift and transmit to the drive shaft.

In particular, the expansion recess may be provided on both sides of one open hole, respectively.

In addition, the expansion recess may be formed in two or more steps having different radial widths.

The present invention as described above simplifies the configuration of a heat pump applicable to an air conditioner for a vehicle, enables precise control of the air conditioner while lowering the production cost, and in particular, contributes to miniaturization of the product, as well as maximizes the processability and productivity of the product. It is an invention that exists.

1 is a cross-sectional view showing an electronic expansion and direction switching integrated valve according to the present invention;
2 is a plan view showing a first valve plate and a second valve plate in the integrated electronic expansion and direction switching valve of the present invention;
3 is a plan view showing a first rotary valve and a second rotary valve in the integrated electronic expansion and direction switching valve of the present invention;
4 is a view showing a first rotary valve and a second rotary valve provided with an airtight member in the integrated electronic expansion and direction switching valve of the present invention;
5 is a cross-sectional view showing a driving member in the integrated electronic expansion and direction switching valve of the present invention;
6 is a view showing another example of the first rotary valve in the integrated electronic expansion and direction switching valve of the present invention;
7 is a view showing another example of the first rotary valve in the integrated electronic expansion and direction switching valve of the present invention;
8 is a diagram showing a state in which both the first output port and the second output port are closed in the integrated electronic expansion and direction switching valve of the present invention;
9 is a view showing a state in which the low flow rate expansion of the refrigerant is made in the first output port and the second output port is closed in the electronic expansion and direction switching integrated valve of the present invention;
10 is a diagram showing a state in which the high flow rate of the refrigerant is expanded at the first output port and the second output port is closed in the electronic expansion and direction switching integrated valve of the present invention;
11 is a diagram showing a state in which the first output port is fully opened and the second output port is closed in the electronic expansion and direction switching integrated valve of the present invention;
12 is a view showing a state in which both the first output port and the second output port are closed in the integrated electronic expansion and direction switching valve of the present invention;
13 is a view showing a state in which the first output port is closed and the low flow rate expansion of the refrigerant is made at the second output port in the integrated electronic expansion and direction switching valve of the present invention;
14 is a view showing a state in which the first output port is closed and the high flow rate expansion of the refrigerant is made in the second output port in the electronic expansion and direction switching integrated valve of the present invention;
15 is a view showing a state in which the first output port is closed and the second output port is fully opened in the integrated electronic expansion and direction switching valve of the present invention.

1 is a cross-sectional view showing an integrated electronic expansion and direction switching valve according to the present invention, and FIG. 2 is a plan view showing a first valve plate and a second valve plate in the integrated electronic expansion and direction switching valve of the present invention, Figure 2 (a) shows the first valve plate, Figure 2 (b) shows the second valve plate.

3 is a plan view showing a first rotary valve and a second rotary valve in the integrated electromagnetic expansion and direction switching valve of the present invention, and FIG. 3 (a) shows the first rotary valve, FIG. 3 (b) represents the second rotary valve.

And, Figure 4 is a road showing the first rotary valve and the second rotary valve provided with an airtight member in the electromagnetic expansion and direction switching integrated valve of the present invention, Figure 4 (a) is a plan view of the first rotary valve, , Fig. 4 (b) is a plan view of the second rotary valve, Fig. 4 (c) is a cross-sectional view taken along line A-A shown in Fig. 4 (a), Fig. 4 (d) is B-B shown in Fig. 4 (b) It is a cross section of a line.

5 is a cross-sectional view showing a driving member in the integrated electronic expansion and direction switching valve of the present invention, and FIG. 6 is a view showing another example of the first rotary valve in the integrated electronic expansion and direction switching valve of the present invention and FIG. 7 is a view showing another example of the first rotary valve in the integrated electronic expansion and direction switching valve of the present invention.

In addition, Fig. 8 is a view showing a state in which both the first output port and the second output port are closed in the integrated electronic expansion and direction switching valve of the present invention, and Fig. 9 is the electronic expansion and direction switching integrated valve of the present invention. It is a diagram showing a state in which the low flow rate expansion of the refrigerant is made in the first output port and the second output port is closed.

In addition, Figure 10 is a diagram showing a state in which the high flow rate expansion of the refrigerant is made in the first output port and the second output port is closed in the electronic expansion and direction switching integrated valve of the present invention, and Figure 11 is the electronic type of the present invention It is a diagram showing a state in which the first output port is fully opened and the second output port is closed in the integrated expansion and direction switching valve,

12 is a view showing a state in which both the first output port and the second output port are closed in the integrated electronic expansion and direction switching valve of the present invention, and FIG. 13 is an electronic expansion and direction switching integrated valve of the present invention. It is a diagram showing a state in which the first output port is closed and the low flow rate expansion of the refrigerant is made in the second output port.

Finally, Figure 14 is a view showing a state in which the first output port is closed and the high flow rate expansion of the refrigerant is made in the second output port in the electronic expansion and direction switching integrated valve of the present invention, Figure 15 is the electronic type of the present invention It is a diagram showing a state in which the first output port is closed and the second output port is fully opened in the expansion and direction switching integrated valve.

As such, in FIGS. 8 to 15, (a) is a plan view in which the first valve plate 200 and the first rotation valve 400 are stacked, (b) is the second rotation valve 500 and the second rotation valve 400, respectively. It is a plan view in which two valve plates 300 are stacked, and (c) is a cross-sectional view of each of the lines C-C to J-J shown in (a) of each figure.

Specific structural or functional descriptions presented in the embodiments of the present invention are only exemplified for the purpose of describing embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described herein, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Meanwhile, in the present invention, terms such as first and/or second may be used to describe various components, but the components are not limited to the terms. The above terms are used only for the purpose of distinguishing one component from other components, for example, within the scope not departing from the scope of the rights according to the concept of the present invention, the first component may be named as the second component, Similarly, the second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it should be understood that it may be directly connected or connected to the other component, but other components may exist in between. something to do. On the other hand, when an element is referred to as being “directly connected” or “in direct contact with” another element, it should be understood that no other element is present in the middle. Other expressions for describing the relationship between elements, that is, expressions such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as "comprises" or "have" are intended to designate the existence of an embodied feature, number, step, action, component, part, or combination thereof, one or more other features or numbers, It should be understood that the existence or addition of steps, operations, components, parts or combinations thereof is not precluded in advance.

The electronic expansion and direction switching integrated valve according to the present invention simplifies the configuration of a heat pump applicable to an air conditioner for a vehicle and enables precise control of the air conditioner while lowering the production cost. It is the basic feature of the technology that can maximize processability and productivity.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings as follows.

As shown in FIGS. 1 to 3, the electronic expansion and direction switching integrated valve according to the present invention has a block shape, an input port 110 to which a refrigerant is supplied to one side, and a first output through which the refrigerant is discharged to the other side. The port 120 and the second output port 130, the input port 110, the first output port 120, and a valve body in which a flow path for communicating the second output port 130 is formed therein ( 100) and; Consisting of a plate shape, it is non-rotatably fixed in the flow path of the valve body 100, and through holes 210 and 310 extending in the circumferential direction are formed to form the input port 110 and the first output port 120. a first valve plate 200 positioned therebetween and a second valve plate 300 positioned between the input port 110 and the second output port 130; It is made of a disk shape and has a sector-shaped open hole (410, 510) cut in the center, and is located on the outer periphery side so as to be connected to the open hole (410, 510), has a predetermined radial width, and extends in the circumferential direction Recesses 420 and 520 are formed, the first rotation valve 400 positioned to be stacked on the lower side of the first valve plate 200 and the second valve positioned to be stacked on the upper side of the second valve plate 300 . a two-rotation valve 500; It is located between the first rotation valve 400 and the second rotation valve 500, and elastically spaced apart a distance between the first rotation valve 400 and the second rotation valve 500 to the first rotation an elastic body 600 for adhering the valve 400 to the lower surface of the first valve plate 200 and the second rotary valve 500 to the upper surface of the second valve plate 300; It is preferable to include a driving shaft 700 connected to the center of the first rotation valve 400 and the second rotation valve 500 to rotate.

That is, the electronic expansion and direction switching integrated valve of the present invention is basically the valve body 100, the first valve plate 200 and the second valve plate 300, the first rotary valve 400 and the second rotary valve ( 500 ), an elastic body 600 , and a drive shaft 700 .

First, the valve body 100 is a configuration constituting a basic skeleton in the integrated electronic expansion and direction switching valve of the present invention, and is composed of a block shape, preferably a substantially hexahedral block shape.

At this time, there will be no limitation on the external shape of the valve body 100, and may have a polygonal prism or a cylindrical shape, including a hexahedral quadrangular prism.

In the valve body 100, as shown in FIG. 1, an input port 110 to which a refrigerant is supplied may be formed on one side, that is, on the left side in the drawing.

And, on the other side of the valve body 100, that is, on the right side in the drawing, the first output port 120 and the second output port 130 through which the refrigerant is discharged may be formed at the top and bottom, respectively.

At the same time, a flow path is formed inside the valve body 100 to connect the input port 110 , the first output port 120 , and the second output port 130 into one, Through this, the refrigerant may pass from the input port 110 to the first output port 120 or the second output port 130 .

Accordingly, for example, when cooling, the refrigerant entering the input port 110 is discharged to the first output port 120 , and during heating, the refrigerant entering the input port 110 is discharged to the second output port 130 . Emissions may be possible.

For convenience of description, the input port 110 is formed on the left side of the valve body 100, and the first output port 120 and the second output port 130 are formed on the right side and will be described below by exemplifying that it is formed on the upper and lower sides. , it will be apparent that the position or direction of each port can be variously changed according to the arrangement direction of the valve body 100 .

Here, the above-described valve body 100 may be formed of a single body as illustrated in the drawings, but may be divided and manufactured into a plurality of parts in consideration of moldability and assembling property, and then assembled into one. .

A pair of valve plates 200 and 300 and a pair of rotation valves 400 and 500 for controlling whether the refrigerant passes or expands will be provided inside the valve body 100 .

At this time, the first valve plate 200 and the second valve plate 300, which are a pair of valve plates, are approximately plate-shaped and are non-rotatably fixedly installed in the valve body 100, and are installed inside the valve body 100. The first valve plate 200 is positioned on the upper side, and the second valve plate 300 is positioned on the inner lower side of the valve body 100 .

That is, the first valve plate 200 is positioned between the input port 110 of the valve body 100 and the first output port 120 , and the second valve plate 300 is the valve body 100 . ) is located between the input port 110 and the second output port 130 .

As such, the first valve plate 200 and the second valve plate 300 are made of a plate material, as shown in FIG. 2 , and have a polygonal outer periphery shape to prevent rotation within the valve body 100 . etc. can be produced.

As shown in (a) of FIG. 2 , in the first valve plate 200 , a through hole 210 having a predetermined radial width is formed to extend in the circumferential direction, and also in the second valve plate 300 . As shown in (b) of Figure 2, the through hole 310 having a predetermined radial width is formed to extend in the circumferential direction.

The through-hole 210 of the first valve plate 200 and the through-hole 310 of the second valve plate 300 are provided in the valve body 100 so as to be vertically aligned as shown in FIG. The through hole 210 of the first valve plate 200 corresponds to the first output port 120 of the valve body 100 , and the through hole 310 of the second valve plate 300 is the second of the valve body 100 . It corresponds to the second output port (130).

Accordingly, when the refrigerant entering the input port 110 of the valve body 100 passes through the through hole 210 of the first valve plate 200, it may be discharged to the first output port 120, When the through hole 310 of the second valve plate 300 is made, it can be discharged to the second output port 130 .

Next, the first rotary valve 400 and the second rotary valve 500, which are a pair of rotary valves, rotate integrally, and the through hole 210 of the first valve plate 200 and the second valve plate 300 ) of the through hole 310 is configured to control whether to open or close or expand.

At this time, the first rotation valve 400 is positioned to be stacked on the lower side of the first valve plate 200 as shown in FIG. 1 , and whether the through hole 210 of the first valve plate 200 is opened or closed. I control whether or not to expand.

In addition, the second rotary valve 500 is positioned so as to be stacked on the upper surface of the second valve plate 300 described above, and determines whether the through hole 310 of the second valve plate 300 is opened or closed or expanded. will take control

As shown in FIG. 3 , the first rotary valve 400 and the second rotary valve 500 are processed by a disk made of a plate material having an approximately predetermined thickness, and are opened to the rotary valves 400 and 500 . Balls 410 and 510 and expansion recesses 420 and 520 are formed along the circumferential direction.

First, the open holes 410 and 510 are formed in a sector-shaped shape with a substantially cut center, and have a relatively wide radial width.

In contrast, the expansion recesses 420 and 520 are formed along the circumferential direction with a radial width narrower than the radial width of the opening holes 410 and 510, and are formed in the radial direction with the opening holes 410 and 510. It is formed to be connected to each other from the outside.

Accordingly, when the open hole 410 of the first rotary valve 400 overlaps the through hole 210 of the first valve plate 200 described above, the through hole 210 is in a fully opened state, The refrigerant will pass through without expansion.

However, when the expansion recess 420 of the first rotary valve 400 overlaps the through hole 210 of the first valve plate 200 as described above, the refrigerant flows between the expansion recess 420 and the through hole 210 . It will expand through the microscopic gaps formed in it.

Of course, the opening 510 and the expansion recess 520 of the second rotary valve 500 will also operate in the same manner as described above with respect to the through hole 310 of the second valve plate 300 .

However, the first rotation valve 400 and the second valve plate 300 are provided to rotate integrally with each other with a phase angle difference of 180 degrees from each other, so that the opening hole formed in the first rotation valve 400 ( The opening 510 and the expansion recess 520 formed in the second rotary valve 500 are positioned to face each other and face each of the 410 and expansion recesses 420 .

At this time, the rotation valves 400 and 500 are controlled to rotate in a counterclockwise direction, so that the expansion recesses 420 and 520 overlap the through holes 210 and 310 before the open holes 410 and 510 so that the refrigerant If the expansion is made and then the rotation valves 400 and 500 are further rotated counterclockwise, it is better to make the opening holes 410 and 510 overlap the through holes 210 and 310 to be in a fully opened state. will be.

However, among the opening holes 410 and 510 or the expansion recesses 420 and 520 of the rotation valves 400 and 500 in the through holes 210 and 310 of the first valve plate 200 and the second valve plate 300 , When nothing overlaps, the through-holes 210 and 310 of the first valve plate 200 and the second valve plate 300 will remain closed.

To this end, in the present invention, as shown in FIG. 4 , the contact surface with the first valve plate 200 in the first rotary valve 400 and the second in the second rotary valve 500 It is preferable that the airtight member 800 made of an elastic airtight material is additionally provided on the contact surface with the valve plate 300 .

Such an airtight member 800 is additionally provided on the upper side of the first rotary valve 400 and the lower side of the second valve plate 300, the through-holes of the first valve plate 200 and the second valve plate 300 ( 210, 310) to keep the closed state will increase the airtight action.

In particular, in the present invention, an elastic body 600 is added between the first rotary valve 400 and the second rotary valve 500, and the elastic body 600 is formed between the first rotary valve 400 and the second rotary valve 500. It serves to elastically space the interval between the two-rotation valve (500).

Accordingly, so that the first rotary valve 400 is more closely attached to the first valve plate 200 thereon, while the second rotary valve 500 is more closely contacted to the second valve plate 300 below it. By doing so, it is possible to more reliably perform opening/closing control for the through-holes 210 and 310 .

As shown in the figure, the elastic body 600 may be a well-known coil spring.

Finally, the drive shaft 700 is connected to the center of the first rotation valve 400 and the second rotation valve 500 to rotate integrally.

At this time, the drive shaft 700 sequentially rotates the centers of the first valve plate 200 , the first rotation valve 400 , the second rotation valve 500 , and the second valve plate 300 from the top to the bottom. It may be arranged to penetrate.

In this case, a separate shaft support bearing or the like may be provided at the lower end of the drive shaft 700 .

1 illustrates an example in which the drive shaft 700 is rotatably supported at the center of the second valve plate 300 without passing through it.

At this time, since the first valve plate 200 and the second valve plate 300 are non-rotatably fixed to the valve body 100, the drive shaft 700 simply passes through the center thereof and is in an idle state. However, the first rotary valve 400 and the second rotary valve 500 have a rectangular hole formed in the center so that the drive shaft 700 can pass through and rotate integrally.

In order to rotate the drive shaft 700 as described above, it is preferable that a separate drive member 900 is provided.

In particular, in the present invention, as shown in Fig. 5, the output shaft 911 according to the electrical signal is rotated step motor 910 and; A small gear 921 and a large gear 922 having a larger diameter than the small gear 921 are integrally formed, and provided between the output shaft 911 of the step motor 510 and the drive shaft 700 . It is preferable that a driving member 900 including a transmission gear 920 is additionally provided to shift the rotation speed of the output shaft 911 of the step motor 910 and transmit it to the driving shaft 700 .

According to this configuration, when an electrical signal is applied to the step motor 910 , the output shaft 911 of the step motor 910 may rotate in a forward or reverse direction.

At this time, it is also possible to directly connect the output shaft 911 of the step motor 910 to the drive shaft 700 without a transmission gear 920. In this case, the rotation speed of the output shaft 911 and the drive shaft 700 is will be the same

However, it is preferable to precisely control the rotation of the drive shaft 700 by shifting the high rotation speed of the step motor 910 to a low speed and transmitting the speed to the drive shaft 700 .

For this purpose, a transmission gear 920 is provided between the output shaft 911 of the step motor 910 and the drive shaft 700 as shown in FIG. It meshes so as to be circumscribed to the 700 , and the gear 922 is meshed to be circumscribed to the output shaft 911 .

As a result, the rotation speed of the step motor 910 is reduced and transmitted to the drive shaft 700 , so that it is possible to precisely control the rotation angle with respect to the first rotation valve 400 and the second rotation valve 500 . .

According to this configuration, the rotary valves 400 and 500 are the first valve plate 200 and the second valve plate 300 fixed in the valve body 100 by the relative rotation movement of the expansion valve according to the present invention. While controlling the opening and closing, it is possible to control whether the refrigerant is expanded as well as the flow path switching of the refrigerant.

Until now, the through-holes 210 and 310 of the first valve plate 200 and the second valve plate 300 and the opening holes 410 and 510 and the expansion recesses 420 and 520 of the rotary valves 400 and 500 . Although it has been described that one of the opening, closing, and expansion of the refrigerant is controlled by the interaction of

To this end, in the present invention, as shown in FIG. 6 , the expansion recesses 420 and 520 may be preferably formed in two or more steps with different radial widths.

For example, the expansion recess 420 formed in the first rotary valve 400 includes a first expansion recess 421 having a narrow radial width, and a radial width of the first expansion recess 421 . It is possible to configure two stages with the second expansion recess 422 having a wider radial width.

Accordingly, when the first expansion recess 421 of the first rotary valve 400 overlaps the through hole 210 of the first valve plate 200 , a low flow rate of refrigerant is expanded, and the first When the second expansion recess 422 of the rotary valve 400 overlaps the through hole 210 of the first valve plate 200 , a high flow rate of refrigerant expansion can be achieved.

In addition, as shown in FIG. 7 in the present invention, the expansion recesses 420 and 520 may be provided on both sides of one of the opening holes 410 and 510, respectively.

According to this, by forming the expansion recesses 420 and 520 before and after the opening holes 410 and 510, respectively, the refrigerant is expanded immediately before the full opening of the through holes 210 and 310, and the through hole 210 , 310) will be possible to carry out the expansion of the refrigerant immediately after the full opening.

In addition, until now, the through hole 210 formed in the first valve plate 200 and the through hole 310 formed in the second valve plate 300 are aligned side by side, and the open hole formed in the first rotary valve 400 . An example has been described in which 410 and the expansion recess 420 face each other with a phase angle difference of 180 degrees from the opening hole 510 and the expansion recess 520 formed in the second rotary valve 500, It will also be possible to implement various controls by forming the phase angle at various angles of 180 degrees or less.

Hereinafter, in the present invention with reference to the drawings, the expansion recesses 420 and 520 are formed in two stages, so that it is possible to control the expansion of a low flow rate and a high flow rate for the refrigerant, and an open hole formed in the first rotary valve 400 . 410 and the expansion recess 420 are opposite to each other with a phase angle difference of 180 degrees from the opening hole 510 and the expansion recess 520 formed in the second rotary valve 500. The explanation is as follows.

For example, when the air conditioner of a vehicle, more preferably an electric vehicle, is cooled, the refrigerant flows into the input port 110 in the valve body 100 and the refrigerant is discharged through the first output port 120 . will be able

And, during heating, the refrigerant introduced into the input port 110 in the valve body 100 may be discharged through the second output port 130 .

At this time, the air conditioning controller of the electric vehicle transmits an appropriate power or electrical signal to the step motor 910 to rotate the output shaft 911 of the step motor 910 at a desired angle.

Accordingly, in a state in which the first valve plate 200 and the second valve plate 300 are non-rotatably fixed to the valve body 100 , the output shaft 911 of the step motor 910 is connected to the drive shaft 700 . ) to rotate the first rotary valve 400 and the second rotary valve 500 .

These actions are divided according to the positions of the rotation valves 400 and 500, that is, the rotation angle, and described in detail as follows.

(1) 1st output port 120 closed / 2nd output port 130 closed

As shown in FIG. 8 , when the first rotation valve 400 and the second rotation valve 500 are positioned, the opening hole 410 of the first rotation valve 400 and the opening hole 410 of the first rotation valve 400 as shown in FIG. None of the expansion recesses 420 overlap the apertures 210 of the first valve plate 200 .

In addition, neither of the opening hole 510 and the expansion recess 520 of the second rotary valve 500 overlaps the through hole 310 of the second valve plate 300 as shown in FIG. , Accordingly, all of the refrigerant supplied to the input port 110 of the valve body 100 is blocked and is not discharged to either of the first output port 120 and the second output port 130 .

In particular, the through-holes 210 and 310 respectively formed in the first valve plate 200 and the second valve plate 300 will be more reliably sealed by the airtight member 800 and the elastic body 600 .

(2) 1st output port 120 low flow rate expansion / 2nd output port 130 closed

From the position shown in FIG. 8 , the first rotary valve 400 and the second rotary valve 500 are further rotated counterclockwise, as shown in FIG. 9 , the first rotary valve 400 and the second rotary valve When the 500 is positioned, the first expansion recess 421 having a narrow radial width in the first rotary valve 400 is the through hole 210 of the first valve plate 200 as shown in FIG. 9 (a). ) and overlapping while forming a microscopic gap.

In contrast, neither of the opening hole 510 and the expansion recess 520 of the second rotary valve 500 overlaps the through hole 310 of the second valve plate 300 as shown in FIG. does not

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the second output port 130 , but the first expansion recess 421 and the first After the low flow rate is expanded between the through holes 210 of the valve plate 200 , it is discharged to the first output port 120 .

(3) 1st output port 120 high flow rate expansion / 2nd output port 130 closed

From the position shown in FIG. 9, the first rotary valve 400 and the second rotary valve 500 are further rotated counterclockwise, as shown in FIG. 10, the first rotary valve 400 and the second rotary valve When the 500 is located, the second expansion recess 422 having a wide radial width in the first rotary valve 400 is the through hole 210 of the first valve plate 200 as shown in FIG. ) and overlap, forming a relatively large gap.

In contrast, neither of the opening hole 510 and the expansion recess 520 of the second rotary valve 500 overlaps the through hole 310 of the second valve plate 300 as shown in FIG. does not

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the second output port 130 , but the second expansion recess 422 and the first After the high flow rate is expanded between the through holes 210 of the valve plate 200 , it is discharged to the first output port 120 .

(4) 1st output port 120 fully open / 2nd output port 130 closed

From the position shown in FIG. 10 , the first rotary valve 400 and the second rotary valve 500 are further rotated counterclockwise, as shown in FIG. 11 , the first rotary valve 400 and the second rotary valve When 500 is positioned, the opening hole 410 in the first rotation valve 400 overlaps the through hole 210 of the first valve plate 200 as shown in FIG. 11A .

In contrast, neither of the opening hole 510 and the expansion recess 520 of the second rotary valve 500 overlaps the through hole 310 of the second valve plate 300 as shown in FIG. does not

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the second output port 130, but the opening hole 410 of the first rotary valve 400 and the first valve plate ( 200), it passes through without expansion between the through holes 210 and is discharged to the first output port 120 .

(5) first output port 120 closed / second output port 130 closed

From the position shown in FIG. 11, the first rotary valve 400 and the second rotary valve 500 are further rotated counterclockwise, and as shown in FIG. 12, the first rotary valve 400 and the second rotary valve When the 500 is positioned, either of the opening 410 and the expansion recess 420 of the first rotary valve 400 is the through hole 210 of the first valve plate 200 as shown in FIG. 12 (a). ) does not overlap.

In addition, neither of the opening hole 510 and the expansion recess 520 of the second rotary valve 500 overlap the through hole 310 of the second valve plate 300 as shown in FIG. , Accordingly, all of the refrigerant supplied to the input port 110 of the valve body 100 is blocked and is not discharged to either of the first output port 120 and the second output port 130 .

In particular, the through-holes 210 and 310 respectively formed in the first valve plate 200 and the second valve plate 300 will be more reliably sealed by the airtight member 800 and the elastic body 600 .

(6) 1st output port 120 closed / 2nd output port 130 low flow rate expansion

From the position shown in FIG. 12 , the first rotary valve 400 and the second rotary valve 500 are further rotated counterclockwise, and as shown in FIG. 13 , the first rotary valve 400 and the second rotary valve When 500 is positioned, neither of the opening hole 410 and the expansion recess 420 of the first rotary valve 400 is the through hole 210 of the first valve plate 200 as shown in FIG. 13 (a). ) does not overlap.

However, as shown in FIG. 13B , in the second rotary valve 500 , the first expansion recess 521 having a narrow radial width forms a fine gap with the through hole 310 of the second valve plate 300 . while overlapping

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the first output port 120 , but the first expansion recess 521 and the second After the low flow rate is expanded between the through holes 310 of the valve plate 300 , it is discharged to the second output port 130 .

(7) first output port 120 closed / second output port 130 high flow expansion

From the position shown in FIG. 13 , the first rotation valve 400 and the second rotation valve 500 are further rotated counterclockwise, as shown in FIG. 14 , the first rotation valve 400 and the second rotation valve When the 500 is positioned, neither of the opening 410 and the expansion recess 420 of the first rotary valve 400 is the through hole 210 of the first valve plate 200, as shown in FIG. 14 (a). ) does not overlap.

However, as shown in (b) of FIG. 14 , the second expansion recess 522 having a wide radial width in the second rotary valve 500 forms a relatively large gap with the through hole 310 of the second valve plate 300 . overlapping while forming.

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the first output port 120 , but the second expansion recess 522 and the second After the high flow rate is expanded between the through holes 310 of the valve plate 300 , it is discharged to the second output port 130 .

(8) 1st output port 120 closed / 2nd output port 130 fully open

From the position shown in FIG. 14 , the first rotation valve 400 and the second rotation valve 500 are further rotated counterclockwise, and as shown in FIG. 15 , the first rotation valve 400 and the second rotation valve When 500 is positioned, neither of the opening 410 and the expansion recess 420 of the first rotary valve 400 is the through hole 210 of the first valve plate 200, as shown in FIG. 15 (a). ) does not overlap.

On the other hand, as shown in (b) of FIG. 15 , in the second rotary valve 500 , the opening 510 overlaps the through hole 310 of the second valve plate 300 .

Accordingly, the refrigerant supplied to the input port 110 of the valve body 100 is not discharged to the first output port 120, but the opening hole 510 of the second rotary valve 500 and the second valve plate ( 300) passes as it is without expansion between the through holes 310 and is discharged to the second output port 130 .

As a result, with the function of switching the refrigerant entering the input port 110 to the first output port 120 or the second output port 130, the function of expanding or blocking the low or high flow rate of the refrigerant is combined. can be done with

In addition, according to the present invention, an elastic body 600 is additionally configured between the first rotary valve 400 and the second rotary valve 500 , and the first rotary valve 400 is attached to the first valve plate 200 . In close contact with the second rotary valve 500 is in close contact with the second valve plate 300, it is possible to perform an accurate switching operation without leakage of the refrigerant.

In addition to this, it becomes possible to reduce the overall size of the valve to provide a compact integrated electronic expansion and diversion valve.

In addition, since the pressure acts on the refrigerant in the valve body 100 symmetrically up and down, it is possible to accurately control it even with the step motor 910 having a relatively small capacity.

Therefore, the integrated electronic expansion and direction switching valve of the present invention configured as described above simplifies the configuration of a heat pump applicable to an air conditioner for a vehicle, lowers the production cost, and enables precise control of the air conditioner, and in particular contributes to the miniaturization of the product. Rather, it is an invention with the excellent advantage of maximizing the processability and productivity of the product.

The above embodiment is an example for explaining the technical idea of the present invention in detail, and the scope of the present invention is not limited to the above drawings or embodiments.

100: valve body 110: input port
120: first output port 130: second output port
200: first valve plate 210: through hole
300: second valve plate 330: through hole
400: first rotation valve 410: open hole
420: expansion recess 421: first expansion recess
422: second expansion recess 500: second rotary valve
510: open hole 520: expansion recess
521: first expansion recess 522: second expansion recess
600: elastic body 700: drive shaft
800: airtight member 900: driving member
910: step motor 911: output shaft
920: gearbox 921: Sochi car
922: truck

Claims (5)

Consisting of a block shape, an input port to which a refrigerant is supplied to one side, a first output port and a second output port through which the refrigerant is discharged to the other side, and the input port, the first output port, and the second output port are communicated a valve body having a flow path formed therein;
A first valve plate formed in a plate shape and fixed non-rotatably in the flow path of the valve body, a through hole extending in a circumferential direction is formed and positioned between the input port and the first output port, and the input port and the a second valve plate positioned between the second output ports;
It is made of a disk shape, and a sector-shaped opening hole with a center cut off, and an expansion recess located on the outer periphery side to be connected to the opening hole and extending along the circumferential direction with a predetermined radial width are formed, the first valve plate a first rotary valve positioned to be stacked on a lower side and a second rotary valve positioned to be stacked on an upper side of the second valve plate;
It is located between the first rotary valve and the second rotary valve, and elastically separates the distance between the first rotary valve and the second rotary valve to bring the first rotary valve into close contact with the lower surface of the first valve plate, and , an elastic body for attaching the second rotary valve to the upper surface of the second valve plate;
Electronic expansion and direction switching integrated valve, characterized in that it comprises a drive shaft connected to the center of the first rotary valve and the second rotary valve to rotate integrally. According to claim 1,
In the first rotary valve, the contact surface with the first valve plate and in the second rotary valve, the contact surface with the second valve plate, characterized in that the airtight member made of an elastic airtight material is additionally provided. Electronic expansion and diversion integral valve. 3. The method of claim 2,
a step motor for rotating the output shaft according to an electrical signal;
The small gear and the gear wheel having a larger diameter than the small gear are integrally formed, and a driving member including a transmission gear provided between the output shaft of the step motor and the drive shaft is additionally provided, the output shaft rotation speed of the step motor An integrated expansion and direction change valve, characterized in that the shifted speed is transmitted to the drive shaft. 4. The method of claim 3,
The expansion recess is an electronic expansion and direction switching integrated valve, characterized in that each provided on both sides of one open hole. 4. The method of claim 3,
The expansion recess is an electronic expansion and direction switching integrated valve, characterized in that the radial width is formed in two or more steps with different widths.

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