KR200401710Y1 - Suction muffler for hermetic compressor - Google Patents

Abstract

The present invention relates to a suction muffler of a hermetic compressor. The present invention is to communicate the inside and outside of the body (31,32) and the body (31,32) and the body (31,32) to form a predetermined space in which the working fluid flows therein through the one side of the body (31,32) A muffler suction pipe 33 which sucks a working fluid into the bodies 31 and 32 and is supported by the elastic member 35 to extract a predetermined distance into and out of the bodies 31 and 32, and the muffler suction pipe 33. It is installed at the tip of the) is formed on the other side of the fallopian tube 38, the body 31, 32 to guide the working fluid delivered from the outside close to the inner surface of the sealed container 40 to the muffler suction pipe 33 And a discharge part 39 for guiding the working fluid flowing through the bodies 31 and 32 into the compression chamber. According to the suction muffler of the hermetic compressor according to the present invention having such a configuration, the fallopian tube, which is an inlet through which the working fluid is sucked into the suction muffler, can always be in close contact with the inner surface of the sealed container, so that the working fluid is transferred to the compression chamber without leakage and noise is eliminated. The effect is relatively large, it is possible to lower the design difficulty of the suction muffler, the durability of the suction muffler is relatively high, there is an advantage that the possibility of damage to the suction muffler is lowered.

Description

Suction muffler for hermetic compressor

The present invention relates to a hermetic compressor, and more particularly, to a suction muffler to allow the working fluid to be sucked into the compression chamber in the most appropriate state and to remove the noise generated in the valve assembly.

1 is an exploded perspective view showing the configuration of a hermetic compressor according to the prior art. As shown therein, the lower container 1 and the upper container 3 form the appearance of the compressor. The lower container 1 and the upper container 3 are combined with each other to form a sealed space therein. Inside the sealed space, components constituting the compressor are installed. Mounting plate 5 is installed on the lower surface of the lower container (1). The mounting plate 5 is for fixing at the position where the compressor is installed.

Next, the lower container 1 is provided with a pipe for flowing the working fluid into and out of the sealed space. That is, the suction pipe 7 for transmitting the working fluid to the interior of the sealed space is installed through the lower container (1). The suction pipe 7 penetrates the lower container 1 on the front side of one end in the major axis of the lower container 1. The discharge pipe 8 is installed to penetrate the lower container 1 on the opposite side where the suction pipe 7 is installed. Reference numeral 9 denotes a process pipe 9. The process pipe 9 serves as a passage for injecting oil or a working fluid into the sealed space when necessary.

In the sealed space, the frame 10 is supported by an elastic member (not shown) on the bottom surface of the lower container 3. The frame 10 is provided with various components constituting the compressor. First, the motor unit 11 is provided in the frame 10. The motor unit 11 is composed of a stator 12 and a rotor 13, the rotor 13 is rotated by the electromagnetic interaction with the stator 12 inside the stator 12. .

The compression mechanism 15 is installed on the upper portion of the frame 10. The compression mechanism unit 15 receives the power of the motor unit 11 through the crankshaft 16 to compress the working fluid.

The valve assembly 17 is provided to transfer the working fluid into and out of the compression chamber of the compression mechanism 15, and the head cover 18 forms a flow path of the working fluid which is drawn into the valve assembly 17. The suction muffler 20 is mounted to the cylinder block together with the valve assembly 17 and the head cover 18. The suction muffler 20 delivers the working fluid delivered from the outside of the compressor to the compression chamber and removes the noise of the valve assembly 17.

2 shows a configuration of a suction muffler according to the prior art. The suction muffler 20 is largely composed of a lower body 21 and an upper body 22. A space having a predetermined flow path is formed in the lower body 21 and the upper body 22 so that the working fluid flows. A muffler suction pipe 24 is provided to penetrate through one side of the lower body 21. The muffler suction pipe 24 is formed integrally with the lower body 21. The muffler suction pipe 24 serves to communicate the inside and outside of the suction muffler.

A fallopian tube 25 is installed at the inlet of the muffler suction pipe 24. The fallopian tube 25 is made of a material having elasticity, such as rubber, or made of the same material as the suction muffler 20. The fallopian tube 25 should be installed to be in close contact with the inner surface of the lower container 21 to prevent the leakage of noise or the leakage of the working fluid. Reference numeral 26 is an oil drain pipe.

The upper end of the upper body 22 is provided with a muffler discharge portion 28. The muffler discharge portion 28 is a portion for delivering the working fluid passed through the suction muffler 20 to the compression chamber.

However, the suction muffler of the hermetic compressor according to the related art as described above has the following problems.

The fallopian tube 25 is preferably in close contact with the inner surface of the lower container 21, in practice, a predetermined gap may occur between the lower container 21 and the inner surface. This is because the frame 10 is moved during operation of the compressor and the suction muffler 20 is also flowed. In this case, the leakage of the working fluid occurs, the effect of the direct suction is reduced, there is a problem that the magnitude of the noise rises due to the generation of the leakage sound.

This is more serious when the fallopian tube 25 is made of the same material as the suction muffler 20. In this case, there is a difficulty in that the design dimensions of the suction muffler 20 and the fallopian tube 25 must be very precise. If the dimensional design is not precise, the muffler suction pipe 24 may be broken.

Therefore, an object of the present invention is to solve the problems of the prior art as described above, to ensure that the fallopian tube is more closely adhered to the inner surface of the sealed container.

Another object of the present invention is to allow the muffler suction pipe to move a predetermined distance into and out of the suction muffler.

According to a feature of the present invention for achieving the object as described above, the present invention has a body to form a predetermined space in which the working fluid flows, and through the one side of the body communicates with the inside and outside of the body working fluid Is sucked into the body and is supported by an elastic member, and the muffler suction pipe is inserted into and out of the body by a predetermined distance, and is installed at the tip of the muffler suction pipe and is in close contact with the inner surface of the hermetic container to be delivered from the outside. It comprises a fallopian tube to guide the muffler suction pipe, the discharge portion is formed on the other side of the body and guides the working fluid flowing through the body to the compression chamber.

The body is composed of a lower body and the upper body, the muffler suction pipe is installed through the lower body, the discharge portion is formed in the upper body.

The muffler suction pipe is installed through the guide portion formed inside the lower body to guide its movement and installation.

The fallopian tube is made of a material having elasticity.

The fallopian tube has a plurality of corrugations and has a shape that expands toward the tip.

According to the suction muffler of the hermetic compressor according to the present invention having such a configuration, the fallopian tube, which is an inlet through which the working fluid is sucked into the suction muffler, can always be in close contact with the inner surface of the sealed container, so that the working fluid is transferred to the compression chamber without leakage and noise is eliminated. The effect is relatively large, it is possible to lower the design difficulty of the suction muffler, the durability of the suction muffler is relatively high, there is an advantage that the possibility of damage to the suction muffler is lowered.

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

3 is a perspective view of the suction muffler of the hermetic compressor according to the present invention, and FIG. 4 is a partial sectional front view of the present invention.

As shown in these figures, the suction muffler is formed by the lower body 31 and the upper body 32. The lower body 31 and the upper body 32 are coupled to each other to form a flow path through which the working fluid flows. The lower body 31 forms the lower half of the suction muffler appearance, and the upper body 32 forms the upper half.

A muffler suction pipe 33 is provided through one side surface of the lower body 31. The muffler suction pipe 33 is capable of entering and exiting the inside and outside of the lower body 31 by a predetermined length. The muffler suction pipe 33 is subjected to an elastic force in the direction in which the tip thereof protrudes out of the lower body 31 by the elastic member 35. However, the muffler suction pipe 33 is not completely released to the outside of the lower body 31 by the elastic member 35. That is, even when the elastic force of the elastic member 35 is maximized, one end of the muffler suction pipe 33 is designed to be inside the lower body 31.

Of course, depending on the design conditions, a stopper (not shown) may be formed at the inner end of the muffler suction pipe 33 to be hung on the guide portion 36 to be described below. When the stopper passes through the guide part 36, the part of the muffler indentation pipe 33 in which the stopper is formed is elastically deformed.

Guide portion 36 is formed on the lower body (31). The guide unit 36 guides the movement of the muffler suction pipe 33 and allows it to be stably installed. The inner diameter of the guide portion 36 is substantially equal to the outer diameter of the muffler suction pipe 33, so that the muffler suction pipe 33 is moved by the elastic force of the elastic member 35 with respect to the guide portion 36. Will be.

A fallopian tube 38 is installed at the tip of the muffler suction pipe 33. The fallopian tube 38 is preferably made of a material having elasticity, such as rubber. The fallopian tube 38 has an inlet thereof in close contact with the inner surface of the sealed container 40, that is, the lower container, so that the working fluid sucked through the suction pipe 42 does not leak and the inside of the suction muffler through the muffler suction pipe 33. To enter. The fallopian tube 38 is shaped to expand toward the tip, and has a plurality of wrinkles.

The fallopian tube 38 may be made of the same material as the bodies 31 and 32. For example, as a synthetic resin, elasticity cannot be exhibited in such a case. Therefore, the tip shape of the fallopian tube 38 should correspond to the inner surface shape of the hermetic container 40.

On the other hand, the discharge portion 39 is provided on the upper end of the upper body (32). The discharge part 39 is a part for transmitting the working fluid flowing through the suction muffler to the compression chamber. The discharge portion 39 is mounted to the valve assembly by a head cover (not shown).

Hereinafter, the operation of the suction muffler of the hermetic compressor according to the present invention having the configuration as described above will be described in detail.

In the present invention, the suction muffler is installed in the cylinder block of the frame, the fallopian tube 38 is in close contact with the inner surface of the sealed container 40. This is made by the elasticity of the fallopian tube 38 itself and the elastic member 35.

In this state, when the compressor is driven to flow the frame, the suction muffler is also flowed. When the suction muffler flows, the fallopian tube 38 maintains a state in close contact with the inner surface of the hermetic container 40.

That is, when the flow of the suction muffler is made slightly, the state of being kept in close contact with the inner surface of the sealed container 40 mainly by the elasticity of the fallopian tube 38, and the elasticity when the flow of the suction muffler is made relatively large The fallopian tube 38 is maintained in close contact with the inner surface of the hermetic container 40 by the elastic force of the member 35.

In other words, as can be seen in Figure 5, the muffler suction pipe 33 is moved in the direction of the arrow along the guide portion 36 of the lower body 31 by the elastic force of the elastic member 35 The fallopian tube 38 is to be in close contact with the inner surface of the sealed container 40 at all times.

On the other hand, during operation of the compressor, the working fluid is sucked into the sealed container 40 of the compressor through the suction pipe 42, the interior of the body 31, 32 through the fallopian tube 38 and the muffler suction pipe 33 Flows into. The working fluid flowing into the bodies 31 and 32 enters the compression chamber through the control of the valve assembly through the discharge part 39.

For reference, the noise generated in the valve assembly is transferred into the bodies 31 and 32 through the discharge part 39 and is removed while the working fluid flows toward the suction pipe 42 through the opposite path through which the working fluid flows.

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

For example, in the illustrated embodiment, the appearance of the suction muffler is composed of the lower body 31 and the upper body 32, which is not necessarily the case, it may be composed of a left, right body or more pieces of body. have.

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

In the present invention, the fallopian tube is always in close contact with the inner surface of the sealed container. This is mainly because the muffler suction pipe is supported by the elastic member and can be admitted to and from the lower body. Therefore, the fallopian tube is more tightly adhered to the inner surface of the sealed container, thereby minimizing the leakage of the working fluid and reducing the noise.

Further, in the present invention, the muffler suction pipe can be moved by a certain distance, so that the muffler suction pipe itself or its installation state is not damaged even when an external force is applied. Therefore, one suction muffler can be applied to various kinds of compressors, and in particular, there is an effect that the design of the suction muffler does not have to be precise.

1 is an exploded perspective view showing the configuration of a typical hermetic compressor.

Figure 2 is a front view showing the configuration of a suction muffler according to the prior art.

Figure 3 is a perspective view showing the configuration of the suction muffler of the hermetic compressor according to the present invention.

Figure 4 is a partial cross-sectional front view showing the configuration of the embodiment of the present invention.

Figure 5 is an operating state showing a state in which the muffler suction pipe is projected relatively in the interior of the lower body in the embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

31: lower body 32: upper body

33: muffler suction pipe 35: elastic member

36: guide part 38: fallopian tube

39: discharge part 40: hermetic container

42: suction pipe

Claims (5)

A body forming a predetermined space in which a working fluid flows; A muffler suction pipe passing through one side of the body to communicate the inside and the outside of the body to suck the working fluid into the body and be supported by an elastic member, and to extract the inside and outside of the body a predetermined distance; A fallopian tube which is installed at the tip of the muffler suction pipe and adheres to the inner surface of the sealed container to guide the working fluid delivered from the outside to the muffler suction pipe; The suction muffler of the hermetic compressor, characterized in that it comprises a discharge portion formed on the other side of the body and guides the working fluid flowing through the body to the compression chamber. The suction muffler of claim 1, wherein the body includes a lower body and an upper body, the muffler suction pipe is installed through the lower body, and the discharge part is formed in the upper body. The suction muffler of claim 2, wherein the muffler suction pipe is installed through a guide part formed in the lower body to guide the movement and installation of the muffler suction pipe. The suction muffler of claim 1, wherein the fallopian tube is made of a material having elasticity. 5. The suction muffler of claim 4, wherein the fallopian tube has a plurality of corrugations and is enlarged toward the tip.