KR100987015B1 - Electrically operated switch-over valve - Google Patents

Abstract

The present invention relates to an electric switching valve having a structure that prevents uneven wear of the valve body that opens and closes the inlet / outlet ports formed in the valve seat, and improves processability and productivity by integrating an existing intermediate plate with the bottom cover member. For this purpose, the valve body coupled with the rotor rotating inside the case by a stepping motor external to the case and the bottom / outlet pipe coupling hole formed at the bottom of the bottom cover member are directed toward the center of the upper surface. It is composed of a middle plate and a valve seat sequentially laminated on the upper surface of the cover member, the valve body is a pair of protrusion pieces are formed in the radial direction to be coupled to the coupling member formed on the rotor for synchronous rotation with the rotor In the electric switching valve is composed of two, the two grains formed in the rotor for synchronous rotation with the rotor It comprises a valve body in which a pair of protruding pieces are symmetrical to each other in the radial direction so as to be combined with the coupling member, a bottom cover member composed of an intermediate plate integrally, and a valve seat bonded to the upper surface of the bottom cover member The bottom cover member has a bottom surface formed with an inlet pipe coupling hole formed to protrude downward, and two outlet pipe coupling holes are formed toward both sides of the bottom cover member on both sides of the protruding surface, and the valve seat is configured to rotate the valve body. And a first outlet port and a second outlet port which are opened and closed by the second outlet port.

Valve, rotor, electric switching valve, port

Description

Electric switching valve {ELECTRICALLY OPERATED SWITCH-OVER VALVE}

The present invention is a symmetrical valve body for opening and closing the inlet / outlet ports formed in the valve seat to prevent uneven wear, by integrating the existing intermediate plate with the bottom cover member of the structure that can improve the processability and productivity according to the reduced parts It relates to an electric switching valve.

Republic of Korea Patent Publication No. 10-2005-0101341

As an electric switching valve used for switching the refrigerant flow path of the refrigerator / freezer, as disclosed in Korean Patent Laid-Open Publication No. 10-2005-0101341, the valve seat is attached to the upper surface of the bottom cover member coupled to the case bottom, and the valve seat A valve body for opening and closing the inlet / outlet port of the valve seat is provided in sliding contact with an upper surface of the valve seat, and the valve body is known as an electric switching valve which is rotated by a stepping motor external to the case.

Hereinafter, with reference to the accompanying drawings with respect to the conventional electric switching valve will be described briefly.

Figure 1a is a cross-sectional view of a conventional electric switching valve, Figure 1b is an exploded perspective view of the electric switching valve excluding the stepping motor in Figure 1a.

1A and 1B, the conventional electric switching valve is coupled to the rotor 20 rotating inside the case 10 by a stepping motor 90 external to the case 10 and synchronously rotated. The sieve 50, the bottom cover member 80 rotatably seating the valve body, and the inlet / outlet pipe coupling holes 81, 82, 83 formed in the bottom surface of the bottom cover member 80 are upper surfaces. It consists of an intermediate plate 70 and a valve seat 60 sequentially stacked on the upper surface of the bottom cover member 80 so as to be directed toward the center.

Here, the rotor 20 is coupled to the inside of the case 10, the rotation shaft 30 is partially inserted into the boss 21 of the rotor 20, and the bearing 40 is disposed above the partially inserted rotation shaft 30. ) Is inserted and is supported in the center of the case (10).

In addition, the single coupling member 22 protruding from the side of the rotor 20 is coupled to a pair of protruding pieces 51 conveniently formed on the valve body 50 so as to be synchronously rotated by the rotation of the rotor 20.

In addition, a spring 23 is interposed between the rotor 20 and the valve body 50 to press the rotor 20 upwards and the valve body 50 to press downwards so that the valve body 50 and the valve seat It is configured to increase the sealing between the (60).

In addition, the bottom cover member 80 includes an inlet pipe coupling hole (inlet port) 81 so that the inlet pipe 81a, the first outlet pipe 82a, and the second outlet pipe 83a are coupled to the bottom surface thereof. The first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 are formed.

In addition, the upper surface of the bottom cover member 80 has a structure in which the sieve intermediate plate 70 and the valve seat 60 which have opened the inlet port (inlet pipe coupling hole) 81 are laminated and laminated, respectively.

Here, the intermediate plate 70 is directed toward the center so that the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 formed in the bottom cover member 80 correspond to the rotation radius of the valve body 50. It functions to reduce.

Therefore, the intermediate plate 70 is formed with two induction holes 71 corresponding to the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83, and the induction hole 71 faces toward the center portion. It is composed of elliptical shape.

And the valve seat 60 in close contact with the valve body 50 is coupled to the upper surface of the intermediate plate 70 is configured.

The valve seat 60 has a first outlet port 61 and a second outlet port 62 which are opened and closed by the rotation of the valve body 50. The first outlet port 61 and the second outlet port are formed. 62 is in communication with each of the induction holes 71 of the intermediate plate 70, and is formed within the rotation radius of the valve body 50.

In order to reduce the drive torque of the valve body 50, the valve body 50 is required to have a small radius. Therefore, it is preferable that the first outlet port 61 and the second outlet port 62 formed on the valve seat 60 have a small pitch radius.

However, the diameters of the inlet pipe 81a and the first outlet pipe 82a and the second outlet pipe 83a that are coupled to the bottom cover member 80 cannot be reduced, and are densely installed in the center due to the ease of brazing welding operation. Since it is not possible, the intermediate plate 70 is essentially required.

As a result, an increase in the number of parts and an increase in the production process causes a variety of problems such as increased production cost and defective rate.

In addition, the valve body 50 is inclined during rotation by a pair of protruding pieces 51 conveniently formed on the valve body 50, and three opening and closing protrusions formed on the bottom surface of the valve body 50 are rotated. There was a problem in that 53 was worn out and leakage occurred at the first outlet port 61 and the second outlet port 62.

The present invention has been made in view of the above problems, an object of the present invention, the symmetrical valve body for opening and closing the inlet / outlet ports formed in the valve seat to prevent uneven wear, and to bottom the existing intermediate plate It is to provide an electric switching valve of the structure that can be integrated with the cover member to improve the processability and productivity according to the reduced parts.

In addition, an object of the present invention, the valve body is coupled to the rotor rotating in the inside of the case by a stepping motor external to the case and the synchronous rotation, the valve body is rotatably placed and coupled to the bottom of the case and the inlet / outlet on the bottom The intermediate plate and valve seat are sequentially laminated to the upper surface of the bottom cover member so that the bottom cover member formed with a pipe coupling hole and the inlet / outlet pipe coupling hole formed at the bottom of the bottom cover member can be directed toward the center of the upper surface. Comprising, the valve body is an electric switching valve is formed in which a pair of protruding pieces are formed in the radial direction to be coupled to the coupling member formed on the rotor for synchronous rotation with the rotor, the bottom cover is integrally composed Member and a valve seat adhered to an upper surface of the bottom cover member, wherein the bottom cover The opening member has a bottom in which the inlet pipe coupling hole is formed to protrude downward, and two outlet pipe coupling holes are formed toward the center of the bottom cover member on both sides of the protruding bottom surface, and the valve seat is opened and closed by rotation of the valve body. It is to provide an electric switching valve, characterized in that the first outlet port, the second outlet port is formed.

In addition, an object of the present invention, the valve body is coupled to the rotor rotating in the inside of the case by a stepping motor external to the case and the synchronous rotation, the valve body is rotatably placed and coupled to the bottom of the case and the inlet / outlet on the bottom The intermediate plate and valve seat are sequentially laminated to the upper surface of the bottom cover member so that the bottom cover member formed with a pipe coupling hole and the inlet / outlet pipe coupling hole formed at the bottom of the bottom cover member can be directed toward the center of the upper surface. Comprising, wherein the valve body is provided with a pair of protruding pieces are formed in the radial direction so as to be coupled to the coupling member formed on the rotor for synchronous rotation with the rotor, wherein the electric switching valve is configured to the rotor for synchronous rotation with the rotor The pair of protruding pieces in the radial direction are symmetrical with each other so as to be combined with the two coupling members formed And a valve seat to be formed, a bottom cover member integrally formed with an intermediate plate, and a valve seat adhered to an upper surface of the bottom cover member, wherein the bottom cover member protrudes downward from the bottom of the inlet pipe coupling hole. And two outlet pipe coupling holes are formed on both sides of the protruding surface toward the center of the bottom cover member, and the valve seat has a first outlet port and a second outlet port which are opened and closed by rotation of the valve body. It is to provide an electric switching valve, characterized in that.

According to the electric switching valve according to the present invention, the valve body for opening and closing the inlet / outlet ports formed in the valve seat is symmetrical to prevent uneven wear, and the existing intermediate plate is integrated with the bottom cover member to improve the processability and productivity There is a feature to improve.

Hereinafter, with reference to the accompanying drawings with respect to the electric switching valve according to the present invention will be described in detail.

Figure 2a is an exploded perspective view of the electric switching valve according to the first embodiment of the present invention except for the stepping motor, Figure 2b is a bottom perspective view of the bottom cover member extracted in Figure 2a, Figure 2c is a bottom cover extracted from Figure 2a Side sectional view of the member.

As shown in Figure 2a to 2c, the electric switching valve of the first embodiment is a structure that can improve the workability and productivity according to the reduced parts by integrating the existing intermediate plate with the bottom cover member.

The electric switching valve of the first embodiment is composed of two parts, which is a rotor 20 which rotates inside the case 10 by a stepping motor (shown in FIG. 1A) 90 external to the case 10. The valve body 50 is coupled and synchronously rotated, and the valve seat 60 is attached to the bottom cover member 80 is attached.

Since the case 10, the bearing 40, the rotation shaft 30, the rotor 20, and the valve body 50 are mentioned in the related art, detailed description thereof will be omitted.

In addition, the bottom cover member 80 is a structure in which the intermediate plate is integrally configured. That is, although the intermediate plate is mentioned in this invention for easy understanding, you may think that there is no intermediate plate.

The bottom cover member 80 has a three-dimensional structure protruding from the bottom, and is a structure in which the inlet pipe 81a, the first outlet pipe 82a, and the second outlet pipe 83a are coupled to the protruding portion. .

Here, the inlet pipe 81a is coupled to the bottom of the bottom cover member 80, and the first outlet pipe 82a and the second outlet pipe 83a are coupled to both side surfaces of the protruding bottom surface.

To this end, the bottom cover member 80 has a structure in which the inlet pipe coupling holes 81 are formed on the bottom surface, and two outlet pipe coupling holes 82 and 83 are formed on both sides of the protruding bottom surface.

At this time, the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 are structures respectively formed on the inclined surface 86 inclined downward at mutually symmetric positions.

Therefore, the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 provide a structure that can be formed upward toward the inner center of the bottom cover member 80.

Meanwhile, the inlet pipe coupling hole 81 penetrates to the upper surface of the bottom cover member 80 to form an inlet port 81.

In addition, the first outlet 84 and the second outlet 85 which are located within the rotation radius of the valve body 50 on the upper surface of the bottom cover member 80, the first outlet pipe coupling hole 82 and the second outlet pipe It is a structure in communication with the coupling hole (83).

And the valve seat 60 is attached to the upper surface of the bottom cover member 80, the valve seat 60 is the first outlet 84 and the second outlet 85 formed on the upper surface of the bottom cover member (80). ), The first outlet port 61 and the second outlet port 62 are formed.

As a result, the inlet pipe 81a and the first outlet pipe 82a and the second outlet pipe 83a coupled to the conventional bottom cover member 80 cannot be densely installed in the center due to the ease of brazing welding operation. This eliminates the need for plates.

As a result, the number of parts and the increase of the production process can solve various problems such as high production cost and defective rate.

3A is an exploded perspective view of an electric switching valve according to a second embodiment of the present invention, and FIG. 3B is a perspective view of the valve body taken from FIG. 1.

As shown in Figures 3a to 3b, the rotor 20 has a structure in which two coupling members 22 protrude from both sides.

In addition, the valve body 50 coupled to the rotor 20 may have a pair of protruding pieces 51 in the radial direction so as to be coupled to two coupling members 22 formed on the rotor 20 so as to rotate synchronously with the rotor 20. ) Is a structure formed symmetrically with each other.

At this time, the guide member 52 is formed in the upper portion of each protruding piece 51 in a vertical upward direction so that the coupling member 22 of the rotor 20 can guide between the protruding pieces 51.

In addition, the valve body 50 has three opening and closing protrusions 53 for opening and closing the first outlet port 61 and the second outlet port 62 formed at the valve seat 60 at the bottom thereof. Each of the opening and closing protrusions 53 is configured to close only one outlet port of the first outlet port 61 and the second outlet port 62.

This is possible by the symmetrical shape of the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 of the bottom cover member 80 described in the first embodiment.

In detail, the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 are symmetrically arranged, and the first outlet pipe coupling hole 82 and the second outlet pipe coupling hole 83 are provided. The first outlet 84 and the second outlet 85 which are in communication with each other are also arranged in a symmetrical shape, so that the opening / closing protrusion 53 for opening and closing the same is protruded in a uniform symmetrical shape in the lower portion of the valve body 50.

Hereinafter, the operation of the valve body will be briefly described together with the accompanying drawings.

3C is an operation diagram showing the operation between the valve seats of the valve body.

As shown in FIG. 3C, three opening and closing protrusions 53 are equally arranged on the bottom surface of the valve body 50.

(1) is a complete closure in which the opening / closing protrusion 53 closes the first outlet port 61 and the second outlet port 62 by the rotation of the valve body 50.

② indicates that the opening and closing protrusion 53 closes only the second outlet port 62 by the rotation of the valve body 50 so that the inlet port 81 and the first outlet port 61 are connected.

③ indicates that the opening / closing protrusion 53 closes only the first outlet port 61 by the rotation of the valve body 50 so that the inlet port 81 and the second outlet port 62 are connected.

④ is connected to the inlet port 81, the second outlet port 62 and the first outlet port 61 by the rotation of the valve body (50).

As described above, the present invention can minimize leakage caused by uneven wear while preventing one opening and closing protrusion 53 from closing the first outlet 84 and the second outlet 85 at the same time. .

In addition, it is possible to prevent uneven wear of the opening and closing protrusion 53 due to the asymmetrical shape of the existing opening and closing protrusion 53.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the invention from this description. Therefore, the scope of the invention should be construed by the claims described to include many such variations.

Figure 1a is a cross-sectional view of a conventional electric switching valve,

1B is an exploded perspective view of the electric switching valve excluding the stepping motor in FIG. 1A.

Figure 2a is an exploded perspective view of the electric switching valve according to the first embodiment of the present invention except for the stepping motor,

Figure 2b is a bottom perspective view of the bottom cover member extracted from Figure 2a,

Figure 2c is a side cross-sectional view of the bottom cover member extracted in Figure 2a.

Figure 3a is an exploded perspective view of the electric switching valve according to the second embodiment of the present invention,

3B is a perspective view of the valve body extracted in FIG. 1.

3C is an operation diagram showing the operation between the valve seats of the valve body.

<Description of the symbols for the main parts of the drawings>

10: case

20: rotor 21: boss

22: coupling member

23: spring

30: axis of rotation

40: bearing

50: valve body 51: protrusion

52: guide member

53: opening and closing protrusion

60: valve seat 61: first outlet port

62: second exit port

70: intermediate plate 71: guide hole

80: bottom cover member 81: inlet pipe coupling hole, inlet port

81a: inlet pipe

82: first outlet pipe coupling hole

82a: first outlet pipe

83: second outlet pipe coupling hole

83a: second outlet pipe

84: exit 1

85: exit 2

86: slope

90: stepping motor

Claims (5)

The valve body 50 coupled to the rotor 20 rotating inside the case 10 by a stepping motor 90 external to the case 10 and the valve body 50 to rotate synchronously, and the valve body rotatably settled, The bottom cover member 80 is coupled to the bottom and the inlet / outlet pipe coupling holes (81, 82, 83) and the inlet / outlet pipe coupling holes (81, 82, 83) formed on the bottom of the bottom cover member Consists of the intermediate plate 70 and the valve seat 60 sequentially laminated to the upper surface of the bottom cover member 80 so as to be directed toward the center of the upper surface, the valve body 50 is the rotor 20 In the electric switching valve is composed of a pair of protruding pieces 51 are formed in the radial direction so as to be coupled to the coupling member 22 formed in the rotor 20 for synchronous rotation with), Bottom cover member 80 and the intermediate plate 70 is integrally formed, Is configured to include a valve seat 60 is bonded to the upper surface of the bottom cover member 80, The bottom cover member 80 has a bottom surface formed with an inlet pipe coupling hole 81 protruding downward, and two outlet pipe coupling holes 82 and 83 are formed at both side surfaces of the bottom surface protruding from the bottom cover member 80. Formed towards the center, The valve seat (60) is an electric switching valve, characterized in that the first outlet port 61, the second outlet port 62 is formed by opening and closing the rotation of the valve body (50). The valve body 50 coupled to the rotor 20 that rotates inside the case 10 by the stepping motor 90 external to the case 10 and the valve body 50 that rotates synchronously, and the valve body rotatably settle the case. Bottom cover member 80 is coupled to the bottom and the inlet / outlet pipe coupling holes (81, 82, 83) formed on the bottom, and the inlet / outlet pipe coupling holes formed on the bottom of the bottom cover member (81, 82, 83) The intermediate plate 70 and the valve seat 60 sequentially stacked on the upper surface of the bottom cover member 80 so as to be directed toward the center of the upper surface, the valve body 50 is the rotor ( In the electric switching valve is composed of a pair of protruding pieces 51 are formed in a radial direction so as to be coupled to the coupling member 22 formed in the rotor 20 for synchronous rotation with the 20, A valve body 50 in which a pair of protruding pieces 51 are symmetrically formed in a radial direction so as to be coupled to two coupling members 22 formed in the rotor 20 so as to be synchronously rotated with the rotor 20; Bottom cover member 80 and the intermediate plate 70 is integrally formed, Is configured to include a valve seat 60 is bonded to the upper surface of the bottom cover member 80, The bottom cover member 80 has a bottom surface formed with an inlet pipe coupling hole 81 protruding downward, and two outlet pipe coupling holes 82 and 83 are formed at both sides of the protruding surface at the center of the bottom cover member 80. Formed towards The valve seat (60) is an electric switching valve, characterized in that the first outlet port 61, the second outlet port 62 is formed by opening and closing the rotation of the valve body (50). The method according to claim 1 or 2, On the bottom protruding side of the bottom cover member 80, two inclined surfaces 86 inclined toward the center are formed at symmetrical positions, and each of the inclined surfaces 86 includes a first outlet pipe coupling hole 82 and a first outlet pipe coupling hole 82. 2, the outlet pipe coupling hole 83 is formed upwardly toward the inner center. The method of claim 3, wherein An inlet pipe coupling hole 81 penetrates the upper surface of the bottom cover member 80 to form an inlet port 81, and a first outlet 84 communicating with the first outlet pipe coupling hole 82. And a second outlet (85) communicating with the second outlet pipe coupling hole (83) is further formed. The method of claim 4, wherein The first outlet 84, the second outlet 85 of the bottom cover member 80 is in communication with the first outlet port 61, the second outlet port 62 of the valve seat 60, Electric switching valve.

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