KR100549267B1 - A valve and valve apparatus for hermetic compressor - Google Patents

Abstract

The present invention relates to a valve and a valve device of a hermetic compressor using the same. The valve of the present invention is a valve 30, which is located on a flow path of a fluid and driven by a pressure difference before and after, having a first opening / closing part 32 for opening and closing the flow path, and one end having a predetermined length. In the first opening and closing part 32 is integrally connected to provide a first neck portion 36 to provide an elastic force for the opening and closing operation of the first opening and closing portion 32, and the first neck portion (32) in the first opening and closing portion (32) The side 36 is formed to have a free end, and the first opening / closing portion 32 includes a second opening / closing portion 40 which opens and closes the flow passage and simultaneously opens and closes a part of the flow passage. In the first opening / closing portion 32 provided with the second opening / closing portion 40, the tip extension portion 34 extends a predetermined length in a direction opposite to the first neck portion 36. According to the present invention, the flow loss is minimized in the valve assembly 60 of the hermetic compressor, thereby increasing the operation efficiency of the compressor.

Hermetic compressors, valves, valve devices, flow loss

Description

A valve and valve apparatus for hermetic compressor using the same

1 is a cross-sectional view showing the internal configuration of a conventional hermetic compressor according to the prior art.

Figure 2 is a cross-sectional view showing the configuration of a discharge valve device of a hermetic compressor according to the prior art.

Figure 3 is a plan view showing the configuration of the valve spring and the discharge valve constituting the discharge valve device of the hermetic compressor according to the prior art.

Figure 4 is a plan view showing the configuration of a preferred embodiment of the valve according to the present invention.

5 is a cross-sectional view showing the configuration of an embodiment of the present invention.

6 is an operating state showing that the valve shown in Figure 4 is operated.

7 is a cross-sectional view showing the configuration of a valve assembly employing the valve shown in FIG.

8 is a plan view showing the configuration of a valve according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

30: valve 32: first opening and closing portion

32 ': penetration part 34: tip extension part

36: first neck 38: fixing part

40: second opening and closing part 42: second neck part

50: cylinder 52: compression chamber

54: piston 60: valve assembly

62: valve plate 64: seating groove

66: flow port 68: valve seat

70: valve spring 72: retainer

130: valve 131: valve plate

131 ': through part 132: first opening and closing part

134: tip extension 136: first wood

145: fastener

The present invention relates to a valve, and more particularly to a valve for controlling the flow of the working fluid through the port and the valve device of the hermetic compressor made using the same.

Hermetic compressors serve to compress working fluids by forming heat exchange cycles such as refrigerators or air conditioners. The working fluid of the heat exchange cycle is delivered to the inside of the compressor and compressed in the compression chamber and discharged to the outside. The valve assembly controls the flow of the working fluid into and out of the compression chamber.

1 is a cross-sectional view of a valve assembly according to the prior art installed at the tip of a cylinder. For reference, only the main parts of the discharge valve excluding the suction valve are shown.

As shown in the drawing, a cylinder 1 is provided in a frame provided inside the sealed container, and the compression chamber 2 is formed through the cylinder 1. In the compression chamber (2), the working fluid is compressed while linearly reciprocating the piston (3).

At the tip of the cylinder 1, a valve assembly 5 is installed to shield the compression chamber 2. Looking at the configuration of the valve assembly 5, first, the valve plate 7 is provided at the front end of the cylinder (1). The valve plate 7 is provided with a seating groove 7g in which a configuration for controlling discharge of the refrigerant compressed in the compression chamber 2 is seated. The flow port 7e penetrates through one side of the valve plate 7. At the edge of the flow port 7e, a valve seat 7t is formed relatively higher than the periphery. Although not shown in the drawing, of course, the other side of the valve plate 7 has a suction port formed therethrough.

The seating groove 7g is provided with a discharge valve 9 for opening and closing the flow port 7e. The shape of the discharge valve 9 is shown well in FIG. 2, the front end portion of which is installed at a position corresponding to the flow port 7e, opening / closing portion 9v for opening and closing the flow port 7e and the other end of the lower portion. It is a fixed portion (9m) is pressed and fixed by the retainer 11 to be described in. The opening / closing portion 9v and the fixing portion 9m are connected by a connecting neck portion 9n.

A valve spring 10 is installed to overlap with the discharge valve 9. The front end of the valve spring 10 serves to control the swing of the discharge valve 9, and the other end is a fixed part pressed and fixed by the retainer 11. It is fixed with the government (9m). A retainer 11 is seated in the seating groove 7g to fix the discharge valve 9 and the valve spring 10 overlapped with each other.

In the above configuration, the discharge valve 9 is automatically opened and closed by the pressure difference inside and outside the compression chamber 2 so that the working fluid compressed in the compression chamber 2 is discharged to the outside.

However, the above-described prior art has the following problems.

When the discharge valve 9v opens the flow port 7e, as shown in FIG. 3A, the discharge valve 9v is inclined upward from the fixing portion 9m toward the tip portion. As the discharge valve 9v is positioned as described above, the fixing part 9m of the opening / closing part 9v is relatively close to the flow port 7e, so that the flow resistance increases, thereby increasing the flow loss.

In order to solve this problem, as shown in FIG. 3B, a spiral valve 9 ′ has been proposed in which the discharge valve 9 is made into a spiral shape rather than a straight line. The spiral valve 9 'is spaced apart so that the opening / closing portion 9v has the same distance with respect to the entire flow port 7e, so that the flow loss can be reduced.

However, when manufacturing the discharge valve 9v from the spring steel sheet, the steel sheet is pressed by the roller to have a predetermined thickness, and the moving direction of the roller (the longitudinal direction of the spiral valve 9 'in the direction of arrow A in FIG. 3B). In a direction perpendicular to, there is a problem in that stress remains in the manufacturing process and the operation characteristics are not good. In fact, the bending direction of the portion B in which the bending load acts during the operation of the spiral valve 9 'becomes perpendicular to the moving direction of the roller. Therefore, in the case of the spiral valve 9 ', operation reliability cannot be ensured.

Therefore, an object of the present invention is to solve the conventional problems as described above, to minimize the flow resistance for the working fluid passing through the flow port opened and closed by the valve.

Another object of the present invention is to maximize the efficiency of the compressor while ensuring the reliability of the operation of the valve made of steel.

According to a feature of the present invention for achieving the above object, the present invention is a valve located on the flow path of the fluid driven by the pressure difference before and after, the first opening and closing portion for opening and closing the flow path, and A first neck portion having a length of and integrally connected to the first opening and closing portion at one end to provide an elastic force for opening and closing operation of the first opening and closing portion, and the first neck portion being formed at the first opening and closing portion at the first opening portion And the first opening and closing portion includes a second opening and closing portion for opening and closing a part of the flow path while opening and closing the flow path.

In the first opening and closing portion provided with the second opening and closing portion is provided with a front end extending portion in a direction opposite to the first neck portion.

The second opening and closing part is formed integrally with the tip extension part and is provided at the tip of the second neck part extending toward the first neck part.

The first neck part is provided with a fixing part for fixing the valve at the opposite end of the first opening and closing part.

The fixing part, the first neck part, the first opening and closing part, and the tip extension part are sequentially connected in a straight line to form a plate having a predetermined thickness.

The first neck part is configured such that an opposite end of the first opening and closing part is connected to the valve plate, and the first neck part, the first opening and closing part, and the tip extension part are located in a through part formed through the valve plate.

The first neck portion, the first opening and closing portion, and the tip extension portion are connected in a straight line, and have a plate shape having a predetermined thickness including the valve plate.

According to another feature of the invention, the present invention is a valve which is located on the flow path of the fluid and driven by the pressure difference before and after and made of spring steel, the shape corresponding to the inlet or outlet shape of the flow path The first opening and closing portion is formed in a plate shape for opening and closing the flow path, and the first wood portion for providing a resilient force for opening and closing operation of the first opening and closing portion is integrally connected to the first opening and closing portion at one end in a plate shape having a predetermined length And a second opening / closing portion formed in the first opening / closing portion with a tip extending toward the first neck portion such that the first opening / closing portion opens and closes a flow passage and at least one portion opens and closes a portion of the flow passage. The first neck is formed to extend in the rolling direction of the rolling process to form the thickness to a desired value.

In the first opening and closing portion the tip extending portion is formed extending in a direction opposite to the first neck portion, a second neck portion is provided to extend toward the first neck integrally from the tip extension portion and the tip of the second neck portion The second opening and closing portion is formed in the.

The first neck part is provided with a fixing part for fixing the valve at the opposite end of the first opening and closing part.

The first neck part is configured such that an opposite end of the first opening and closing part is connected to the valve plate, and the first neck part, the first opening and closing part, and the tip extension part are located in a through part formed through the valve plate.

A valve plate having at least two flow ports communicating with the interior of another compression chamber of the present invention, and a plate-shaped valve seated on the surface of the valve plate to open and close the flow ports by pressure differences in and out of the compression chamber, respectively; And a fixing means for fixing one end of the valve to the valve plate, wherein the valve has a first opening and closing portion for opening and closing the flow port, and has a predetermined length and is integrally connected to the first opening and closing portion at one end. And a first neck part providing an elastic force for the opening and closing operation of the first opening and closing part, and a tip extending in the first opening and closing part toward the first neck part so that the first opening and closing part opens and closes the flow path. It is comprised including the 2nd opening-closing part which opens and closes a part of furnace.

The second opening / closing portion located inside the first opening / closing portion is provided at the tip of a second neck portion having one end connected to the first opening / closing side.

The first neck portion is provided with a fixing portion for fixing the valve at the opposite end of the first opening and closing portion is fixed by a retainer which is a fixing means.

The first neck portion is configured such that an opposite end of the first opening and closing portion is connected to the valve plate, and the valve plate is fixed to the valve plate by bolts as fixing means.

According to the valve of the present invention as described above and the valve device of the hermetic compressor using the same, it is possible to secure the operation reliability of the valve and to minimize the flow loss of the working fluid passing through the flow port, thereby increasing the efficiency of the compressor. have.

Hereinafter, a preferred embodiment of a discharge valve device of a hermetic compressor according to the present invention will be described in detail with reference to the accompanying drawings.

4 shows a top view of a preferred embodiment of a valve according to the invention, and FIG. 5 shows a cross sectional view of an embodiment of the invention.

According to this, the valve 30 of the preferred embodiment of the present invention is formed in a plate shape extending in one direction with a predetermined width. The overall thickness of the valve 30 is generally the same. Such a valve 30 is generally made of spring steel plate.

The valve 30 is provided with a first opening and closing part 32 for opening and closing a flow port 66 (see FIG. 7), which is a flow path through which a working fluid flows. The first opening and closing part 32 is formed in a shape capable of shielding the inlet or the outlet of the flow port 66. In general, since the cross section of the flow port 66 is circular, the first opening and closing part 32 is formed in a disc shape.

A tip extension portion 34 is provided to extend from the first opening and closing portion 32 toward the free end portion of the valve 30. The tip extension portion 34 is formed to extend in a predetermined width and length.

The first neck portion 36 is formed on the opposite side of the tip extension portion 34. By such a configuration, the first neck part 36, the first opening and closing part 32, and the tip extension part 34 are provided in a straight line. The first neck 36 is formed to have a predetermined length and width, and provides an elastic force for the opening and closing operation of the first opening and closing part 32. Therefore, the first neck portion 36 should be designed in accordance with the operating characteristics of the valve 30, its length, width and thickness.

A fixing part 38 is formed at one end of the first neck part 36, that is, at the opposite end where the first opening and closing part 32 is provided. In the present embodiment, the fixing portion 38 is formed relatively wider than the first neck portion 36, but is not necessarily so. The fixing part 38 is for fixing the valve 30. Therefore, the fixed part 38 side becomes the fixed end part of the valve 30, and the 1st opening-closing part 32 and the front end extending part 34 side become a free end part.

On the other hand, the second opening and closing portion 40 is provided inside the first opening and closing portion (32). The second opening and closing portion 40 is located in the through portion 32 ′ formed inside the first opening and closing portion 32 to open and close the through portion 32 ′ to substantially open and close the flow port 66. do. Of course, since the second opening and closing part 40 is formed inside the first opening and closing part 32, the area that can be shielded is narrower than the first opening and closing part 32. Thus, the second opening and closing part 40 can open and close a part of the flow port 66. The second opening and closing part 40 is also composed of a disc shape, but is not necessarily the case may be of a different shape in consideration of the flow of the working fluid.

The second opening and closing part 40 is formed at the tip of the second neck part 42. The second neck portion 42 is formed integrally connected to the tip extension portion 34. However, both the second opening and closing part 40 and the second neck part 42 may be formed inside the first opening and closing part 32. In this case, the tip extension part 34 may not be necessary. The second neck portion 42 is provided at a portion that penetrates the tip extension portion 34 up and down. The second neck part 42 serves to provide an elastic force required for the operation of the second opening and closing part 40.

The valve 30 having the above configuration is used for the valve assembly as shown in FIG. That is, the valve assembly 60 is used to shield the compression chamber 52 of the cylinder 50. In the drawing, a configuration in which the working fluid is discharged from the compression chamber 52 is shown.

The valve assembly 60 has a valve plate 62. The valve plate 62 has a mounting groove 64 formed on one surface thereof. The valve 30 is installed in the seating groove 64. A flow port 66 is provided through the valve plate 62. In general, the flow port 66 is separately formed to deliver the working fluid to the compression chamber 52 and to discharge the working fluid compressed in the compression chamber 52. The valve seat 68 surrounding the outlet edge of the flow port 66 is formed to protrude relatively.

The valve spring 70 is provided on the valve 30. The valve spring 70 serves to control the opening and closing behavior of the valve 30. The valve spring 70 may be various in addition to the form shown in the present embodiment.

The valve 30 and the valve spring 70 are fixed to the seating groove 64 of the valve plate 62 by a retainer 72. That is, the fixing part 38 of the valve 30 is pressed and fixed by the retainer 72 so that the first opening and closing part 32 provided at the free end side can be opened and closed.

For reference, the suction valve for opening and closing the flow port for transmitting the working fluid into the compression chamber 52 has a seating groove 64 or a seating groove of the valve plate 62 provided with a valve 30 for discharging. 64 may be provided on the opposite side of the formed side. Reference numeral 54 is a piston.

Next, another embodiment of the present invention will be described with reference to FIG. 8. The valve 130 of the present embodiment is configured in the shape of a substantially square plate. That is, the square valve plate 131 is made of a spring steel plate having a predetermined thickness.

The through part 131 ′ is formed at the center of the valve plate 131, and the first opening and closing part 132 is provided at one side of the through part 131 ′. The first opening and closing part 132 opens and closes the flow port 66, and has a shape corresponding to the inlet or outlet shape of the flow port 66. The shape of the first opening and closing part 132 is generally disc-shaped.

On one side of the first opening and closing part 132 is a front end extending portion 134 is formed. The tip extension portion 134 is formed to extend to the opposite side of the first neck portion 136 to be described below. The tip extension portion 134 is formed to have a predetermined width and length.

The first neck part 136 connects the first opening and closing part 132 and the valve plate 131. The first neck portion 136 is formed to have a predetermined width and length, it is formed to extend in the opposite side of the tip extension portion 134. The first neck part 136 provides an elastic force for the operation of the first opening and closing part 132. In this configuration, the first neck portion 136, the first opening and closing portion 132 and the tip extension portion 134 is provided in a straight line in sequence.

The second opening and closing portion 140 is formed inside the first opening and closing portion 132. The second opening and closing part 140 serves to open and close the flow port 66, and the free end thereof becomes the first neck part 142 side. That is, the second opening and closing portion 140 is provided at the tip of the second neck portion 142, the second neck portion 142 is connected to the tip extension portion 134. The second neck part 142 provides an elastic force for the operation of the second opening and closing part 140. Of course, both of the second opening and closing part 140 and the second neck part 142 may be provided inside the first opening and closing part 130. In this case, the tip extension part 134 may not be necessary.

Meanwhile, fastening holes 145 are formed at four corners of the valve plate 131, respectively. The bolt, which is a fastening means, passes through the fastening hole 145. The bolt is fastened to the front of the cylinder 50 (see FIG. 7). Reference numeral 146 denotes a portion communicating with another flow port in addition to the flow port opened and closed by the first opening and closing portion 132 through a hole.

Hereinafter, the operation of the valve and the valve device of the hermetic compressor according to the present invention having the configuration as described above will be described in detail. This will be described with reference to the embodiment shown in FIG.

The valve 30 of the present invention is made of a spring steel sheet as a material. The thickness of the spring steel sheet is set through a rolling process. That is, it presses the steel plate which is a base material with a roller, and forms it in desired thickness. At this time, the direction in which the roller proceeds to be the valve 30, more precisely the longitudinal direction of the first neck 36. In this way, when the elastic deformation force acts on the first neck portion 36, the bending caused by the elastic deformation of the first neck portion 36 can be generated in the longitudinal direction to produce the desired operating characteristics.

On the other hand, the operation of the valve 30 will be described with reference to FIG. The first and second opening and closing portions 32 and 40, which are free end portions of the valve 30, open and close the flow port 66 by the pressure difference between both sides of the flow port 66 shielded by the valve 30. .

That is, the first neck part 36 and the second neck part 42 are elastically deformed to open and close the flow port 66 by the pressure difference before and after the valve 30. 6 is a state in which the valve 30 is elastically deformed and the flow port 66 is opened.

In this state, the working fluid discharged from the flow port 66 may be uniformly flowed through the entire flow port 66. This will be described in detail as follows. Since the fixing part 38 is fixed, the valve 30 is elastically deformed to be inclined upward from the fixed end side toward the free end side, so that the first neck part 36 side and the flow port of the first opening / closing part 32 are formed. The spacing between the outlets of 66 is relatively close.

However, the second opening and closing part 32 is located in the first opening and closing part 32 to correct this. That is, the second opening 32 is formed so that the free end thereof faces the first neck 36, so that the through portion 32 'on the side of the first opening 32 is relatively close to the flow port 66. To open and close relatively more. This state is well illustrated in FIG.

Accordingly, the flow of the working fluid through the flow port 66 opened and closed through the valve 30 becomes more uniform, and relatively large flow resistance does not occur in a part of the flow port 66.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

For example, the valves 30 and 130 of the present invention are configured such that the free ends of the first opening and closing portions 32 and 132 and the second opening and closing portions 40 and 140 face each other. The configuration may vary.

The shape of the second opening and closing portions 40 and 140 or the first opening and closing portions 32 and 132 may not necessarily correspond to other various plate shapes.

Meanwhile, the valves 30 and 130 of the present invention may be used for various types of valve assemblies 60 other than the embodiment shown in FIG. 7. In this case, the valves 30 and 130 may be used as discharge valves or suction valves, respectively.

In the valve device of the valve and hermetic compressor according to the present invention as described in detail above, the following effects can be obtained.

First, in the present invention, the flow resistance acted by the valve over the entire flow port through which the working fluid flows becomes uniform and relatively small. Therefore, the flow of the working fluid through the entire flow port is uniform and smooth, thereby increasing the efficiency of the compressor.

In the present invention, in the valve made of steel sheet, it is possible to set the elastic deformation direction of the valve in accordance with the direction of the rolling operation for the setting of the thickness can easily secure the operation reliability of the valve, while having the effects described above have.

Claims (15)

A valve located on a flow path of a fluid and driven by a pressure difference before and after that, A first opening and closing part for opening and closing the flow path; A first neck having a predetermined length and integrally connected to the first opening and closing portion at one end thereof to provide an elastic force for opening and closing operation of the first opening and closing portion; And a first opening and closing portion in the first opening and closing portion such that the first neck opening and closing portion is configured to include a second opening and closing portion for opening and closing a portion of the flow passage while simultaneously opening and closing the flow passage. The valve according to claim 1, wherein the first extension part extends a predetermined length in a direction opposite to the first neck part from the first opening part provided with the second opening part. 3. The valve of claim 2, wherein the second opening and closing part is formed integrally with the front end extending part and is provided at the front end of the second neck part extending toward the first neck part. The valve according to any one of claims 1 to 3, wherein the first neck portion is provided with a fixing portion for fixing the valve at an opposite end of the first opening / closing portion. 5. The valve according to claim 4, wherein the fixing part, the first neck part, the first opening and closing part, and the tip extension part are sequentially connected in a straight line and have a plate shape having a predetermined thickness. The said first neck part is comprised so that the opposite end part of the said 1st opening-and-closing part may be connected to a valve plate, The said 1st neck part, a 1st opening part, and a front end extension part comprise a said valve plate. A valve, characterized in that located in the through formed through. 7. The valve according to claim 6, wherein the first neck part, the first opening and closing part, and the tip extension part are connected in a straight line, and have a plate shape having a predetermined thickness including the valve plate. In the valve which is located on the flow path of the fluid and driven by the pressure difference before and after and made of spring steel plate A first opening and closing portion configured to have a plate shape having a shape corresponding to an inlet or outlet shape of the flow passage, and opening and closing the flow passage; A first wood part which is integrally connected to the first opening and closing part at one end in a plate shape having a predetermined length and provides an elastic force for opening and closing operation of the first opening and closing part; The tip opening is formed in the first opening and closing portion toward the first neck portion, and the first opening and closing portion includes a second opening and closing portion that opens and closes a part of the flow path at the same time. At least the first neck portion is formed to extend in the rolling direction of the rolling process to form the thickness to a desired value. The method of claim 8, wherein the first extension portion is formed in the opposite direction extending from the first neck portion extending the predetermined length, the second neck portion is provided so as to extend toward the first neck integrally from the tip extension portion And the second opening and closing portion is formed at the front end of the second neck portion. 10. The valve according to claim 8 or 9, wherein the first neck portion has a fixing portion for fixing the valve at an opposite end of the first opening / closing portion. 10. The method according to claim 8 or 9, wherein the first neck portion is formed by connecting the opposite end of the first opening and closing portion to the valve plate, wherein the first neck portion, the first opening and closing portion is formed through the valve plate A valve, characterized in that located in the through part. A valve plate having at least two flow ports communicating with the interior of the compression chamber, A plate-shaped valve seated on a surface of the valve plate to open and close the flow port, respectively, by a pressure difference inside and outside the compression chamber; It comprises a fixing means for fixing one end of the valve to the valve plate, The valve, A first opening and closing part for opening and closing the flow port; A first neck having a predetermined length and integrally connected to the first opening and closing portion at one end thereof to provide an elastic force for opening and closing operation of the first opening and closing portion; Hermetic compressor characterized in that the front end is formed to extend in the first opening and closing toward the first neck portion, the first opening and closing portion includes a second opening and closing portion for opening and closing a part of the flow path at the same time. Valve device. The valve apparatus of the hermetic compressor of claim 12, wherein the second opening / closing portion located inside the first opening / closing portion is provided at the front end of the second neck portion whose one end is connected to the first opening / closing portion. The valve apparatus of claim 13, wherein the first neck part has a fixing part for fixing the valve at an opposite end of the first opening / closing part and is fixed by a retainer which is a fixing means. 14. The valve of a hermetic compressor according to claim 13, wherein the first neck part is configured with an opposite end of the first opening and closing part connected to a valve plate, and the valve plate is fixed to the valve plate by a bolt as a fixing means. Device.

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