KR200267897Y1 - Working fluid suction apparatus for hermetic compressor - Google Patents

Abstract

The present invention relates to a working fluid suction device of a hermetic compressor. In the present invention, the working fluid is delivered to the suction muffler 30 installed inside the sealed container 20 from the outside of the sealed container 20 without leaking. To this end, the suction muffler 30 and the suction pipe 50 passing through the sealed container 20 are communicated through the communication port 40. The communication hole 40 is formed of a flexible material, one end of which is inserted into the suction muffler 30, and the other end of the welding tube 60 fixing the suction pipe 50 to the sealed container 20. It is inserted inside of. A communication space 62 is formed inside the welding tube 60 so that the communication pipe 43 of the suction pipe 50 and the communication port 40 communicates through the communication space 62. According to the present invention as described above there is an advantage that the efficiency of the compressor is increased because the leakage of the working fluid does not occur.

Description

Working fluid suction apparatus for hermetic compressor

The present invention relates to a hermetic compressor, and more particularly to a working fluid suction device for sucking the working fluid into the compressor.

Figure 1 shows the internal configuration of a hermetic compressor of the connecting rod method according to the prior art. According to this, the sealed container 1 constituting the exterior of the compressor is composed of an upper container 1t and a lower container 1b and a sealed space is formed therein. The frame 2 is supported in the sealed space. The frame 2 is provided with a stator 3, and the frame 2 is supported inside the sealed container 1 by a spring 2S.

The crankshaft 5 is provided through the center of the frame 2. The crankshaft 5 is integrally provided with a rotor 4 and rotated together with the crankshaft 5 by electromagnetic interaction with the stator 3.

An eccentric pin 5b is formed on the upper end of the crankshaft 5 so as to be eccentric with respect to the rotation center of the crankshaft 5. And the counterweight (5c) is formed on the opposite side formed with the eccentric pin (5b). At the lower end of the crankshaft 5, a propeller 5d for sucking up the oil L on the bottom of the lower container 1b into the oil flow passage 5a formed on the crankshaft 5 is provided.

On the other hand, the cylinder 6 provided with the compression chamber 6 'inside is integrally molded with the said frame 2. As shown in FIG. A piston 7 is installed in the compression chamber 6 ', which is connected to an eccentric pin 5b of the crankshaft 5 and a connecting rod 8.

At the front end of the cylinder block 6, a valve assembly 9 is installed to control the flow of the refrigerant flowing into and out of the compression chamber 6 ′. The head assembly 10 is installed in the valve assembly 9 to form a discharge chamber therein.

Suction muffler (11) such that one side is located between the head cover (10) and the valve assembly (9) to reduce the noise of the working fluid sucked into the compression chamber (6 ') through the valve assembly (9) Is installed.

In addition, a suction pipe 12 is installed to penetrate the sealed container 1 in order to deliver a working fluid from the outside of the sealed container 1 to the inside. The suction pipe 12 is connected to other parts of the heat exchange cycle outside the sealed container 1 to supply a working fluid to the inside of the sealed container 1. As shown in FIG. 2, the suction pipe 12 is installed such that its outlet faces the suction port 11e of the suction muffler 11. Reference numeral 13 is a discharge pipe through which the working fluid compressed inside the compressor is delivered to the outside of the sealed container 1, and 15 is a welding tube for fixing the suction pipe 12 through the sealed container 1. .

However, in the prior art as described above, there are the following problems.

That is, the working fluid sucked into the sealed container 1 through the suction pipe 12 flows through the suction port 11e to the suction muffler 11. However, since the suction pipe 12 and the suction port 11e are not directly connected, a large amount of the working fluid sucked into the sealed container 1 through the suction pipe 12 has an internal space of the sealed container 1. Is passed to.

As such, a large portion of the working fluid sucked through the suction pipe 12 may not be transferred into the suction muffler 11, resulting in a decrease in efficiency of the compressor.

Therefore, an object of the present invention is to solve the conventional problems as described above, by directly communicating the suction pipe for supplying the working fluid to the inside of the compressor and the suction muffler to remove the noise of the working fluid to suck the working fluid without leakage. To be delivered to the muffler.

1 is a cross-sectional view showing the internal configuration of a typical hermetic compressor.

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

Figure 3 is a partial cross-sectional view showing the configuration of a preferred embodiment of the working fluid suction device of the hermetic compressor according to the present invention.

4 is a cross-sectional view of the communication port that constitutes the embodiment of FIG.

Figure 5 is a partial cross-sectional view showing the configuration of another embodiment of the present invention.

FIG. 6 is a cross-sectional view of a communication port constituting the embodiment of FIG. 5. FIG.

Explanation of symbols on the main parts of the drawings

1: airtight container 2: frame

3: stator 4: rotor

5: crankshaft 5a: oil euro

5b: eccentric pin 5c: counterweight

5d: propeller 6: cylinder

8: Connecting Rod 9: Valve Assembly

10: cylinder head 11: suction muffler

12: suction pipe 13: discharge pipe

20: airtight container 22: head cover

30: suction muffler 32: discharge part

34: inlet 40: communication port

41: communication body 43: communication euro

47: hanger 49: stopper

50: suction pipe 60: welding tube

62: communication space 162: connecting pin

According to a feature of the present invention for achieving the object as described above, the present invention is a suction pipe for supplying a working fluid from the outside through the sealed container, and the suction pipe is fixed to the sealed container and the inside A communication space is formed in communication with the suction pipe and the welding tube is opened toward the inside of the sealed container, and the suction is installed inside the sealed container and removes the noise of the working fluid sucked through the suction pipe to be delivered to the compression chamber side. It comprises a muffler and a communication port formed of a flexible material, one end is connected to the suction port of the suction muffler and the other end is inserted into the communication space of the welding tube.

As the communication port is inserted into the communication space of the welding tube, communication between the communication space and the inside of the sealed container is closed.

According to another feature of the present invention, the present invention is installed to protrude into the interior of the sealed container and the suction pipe for supplying a working fluid into the interior of the sealed container, the operation is installed in the sealed container and sucked through the suction pipe The suction muffler removes the noise of the fluid and delivers it to the compression chamber, and one end is connected to the suction port of the suction muffler, and the other end is fixed to the suction pipe protruding into the airtight container, and the elastic part has a length in the middle part. It is configured to include a communication port formed of a flexible material having an elastic portion.

The protruding portions of the suction pipe are inserted into the communication port, and they are connected to each other by connecting pins.

According to the present invention having such a configuration, the working fluid sucked into the compressor is delivered to the suction muffler without leaking into the sealed container, thereby improving the performance of the compressor.

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

3 is a cross-sectional view of a preferred embodiment of a working fluid suction device of a hermetic compressor according to the present invention, and FIG. 4 is a cross-sectional view of a communication port constituting an embodiment of the present invention.

As shown in these figures, the sealed container 20 constitutes the exterior of the compressor and forms a predetermined closed space therein. The closed space is provided with a configuration for compressing the working fluid.

The suction muffler 30 is installed in the inner space of the sealed container 20 so as to be connected to the valve assembly by the head cover 22. The suction muffler 30 serves to remove noise of the working fluid supplied into the compressor for compression.

The suction muffler 30 has a discharge part 32 for discharging the working fluid passing through the suction muffler 30 to the valve assembly at one end thereof. The discharge part 32 is connected to the valve assembly side by the head cover 22 to fix the entire suction muffler 30. A suction port 34 for supplying a working fluid into the suction muffler 30 is formed at one side of the suction muffler 30.

The communication port 40 is installed in the suction port 34 of the suction muffler 30. The communication port 40 is well illustrated in FIG. The communication port body 41 constituting the communication port 40 is most preferably formed of a rubber material having a flexible property.

The communication passage 43 is formed through the inside of the communication port body 41. The communication passage 43 serves to communicate the suction pipe 50 and the suction muffler 30 to be described below. The inlet of the communication passage 43 extends the communication hole body 41 to be located in the communication space 62 inside the welding tube 60 to be described below.

Hanging jaw 47 and the stopper 49 is provided to restrict the installation position of the communication port 40 surrounding the outer peripheral surface of one end of the communication port body 41. The hooking jaw 47 is hooked inside the suction port 34 to prevent the communication port 40 from falling out of the suction port 34 by any force. The stopper 49 regulates the degree to which the communication port 40 is inserted into the suction muffler 30.

The communication port 40 having such a configuration is that the communication port body 41 has a flexible property, and is freely elastically deformed by the vibration of the configuration including a frame provided with the suction muffler 30.

Next, the suction pipe 50 is installed through the sealed container 20. The suction pipe 50 serves to suck the working fluid from the outside into the sealed container 20. The suction pipe 50 is fixed to the hermetically sealed container 20 by the welding tube 60, and a communication space 62 is formed inside the welding tube 60. One side of the communication space 62 communicates with the suction pipe 50, and the other side thereof is opened to communicate with the inside of the sealed container 20.

Hereinafter will be described the operation of the working fluid suction device of the hermetic compressor according to the present invention as described above.

In the embodiment of the present invention, the communication passage 43 of the communication port 40 is inserted into the communication space 62 of the welding tube 60 so that the communication space 62 and the communication passage 43 communicate directly. To be. And the vibration generated from the suction muffler 30 side is formed of a material having the communication port 40 is elastic so that it is not transmitted to the suction pipe 50 or the welding tube 60.

In order to prevent leakage between the communication space 62 and the communication passage 43, the dimension is set such that the outer circumferential surface of the communication port 40 is in close contact with the inner surface of the communication space 62 of the welding tube 60. It is desirable to be.

In this state, if the heat exchange cycle is operated, the compressor is also started. By the operation of the compressor, the working fluid of the heat exchange cycle is sucked through the suction pipe 50. The working fluid is transferred to the communication space 62 of the welding tube 60. The working fluid transferred to the communication space 62 is transferred to the communication passage 43 again and enters the suction muffler 30 to remove noise.

Then, the discharge unit 32 of the suction muffler 30 passes through the valve assembly to the compression chamber is compressed.

In the above configuration, the suction pipe 50 and the suction muffler 30 are directly communicated by the communication port 40 and the welding tube 60. Therefore, the working fluid sucked through the suction pipe 50 can be supplied to the suction muffler 30 without leakage through the communication passage 43 of the communication port 40.

And since the communication port 40 is formed of a rubber material having a flexible property, the vibration of the frame side on which the suction muffler 30 is installed is not transmitted to the hermetic container 20 or the suction pipe 50.

Next, FIGS. 5 and 6 show another embodiment of the present invention. In the present embodiment, the same components as those in the embodiments shown in Figs. 3 and 4 are denoted by the same reference numerals, and only the configurations that are not identical will be described.

In the present embodiment, the communication port 140 communicates between the suction muffler 30 and the suction pipe 50. The communication port 140 is formed of a flexible rubber material, etc. The communication passage 143 is formed inside the communication port body 141.

And the intermediate portion of the communication sphere body 141 is formed with a stretchable portion 145. The stretchable portion 145 is a portion whose length can be changed by an external force, and becomes a kind of corrugated pipe. The expansion and contraction unit 145 serves to prevent the vibration of the frame side on which the suction muffler 30 is installed to the sealed container 20 and the suction muffler 30 and the sealed container 20 according to the vibration of the frame side. The effect of changing the gap between them is to be eliminated.

The communication port body 141 is provided with a hanger 147 and the stopper 149 for mounting on the suction muffler (30). A pin hole 141 ′ is formed at the inlet side of the communication passage 143 of the communication sphere body 141.

Meanwhile, the suction pipe 50 is installed through the sealed container 20, and the suction pipe 50 protrudes a predetermined length into the sealed container 20. The protruding suction pipe 50 has a pin hole 51 penetrated perpendicularly to the longitudinal direction. The suction pipe 50 is fixed to the hermetic container 20 by the welding tube 160.

The suction pipe 50 and the communication port 140 is connected to each other by a connecting pin 162. The connection pin 162 is mounted through the suction pipe 50 and the communication port 140 and passes through the pin holes 141 ′ and 51. A head 164 may be formed at an upper end of the connection pin 162, and a leg part 165 may be formed at a lower end of the connection pin 162. The leg portions 165 are bent in opposite directions to prevent the connecting pins 162 from being removed. Of course, the configuration of the connecting pin 162 shown in this embodiment is exemplary.

In this embodiment, the suction muffler 30 and the suction pipe 50 are directly connected by the communication port 140. At this time, the vibration transmission between the suction muffler 30 and the suction pipe 50, and the change of the interval between the suction muffler 30 and the sealed container 20 is formed in the communication port 140 itself made of a flexible material. Is prevented. In particular, the expansion and contraction of the elastic portion 145, the vibration and the change in the interval is buffered.

The working fluid suction device of the hermetic compressor according to the present invention as described in detail above uses a communication port formed of a material having a flexible property to connect the suction muffler and the suction pipe so that the working fluid is directly sucked into the suction muffler.

And by changing the length of the communication sphere itself or the communication sphere is inserted into the welding tube to remove the influence of the vibration on the frame side. Therefore, according to the present invention, while sucking the working fluid into the hermetic compressor more efficiently, the durability of the compressor can be improved.

Claims (4)

A suction pipe for supplying a working fluid from the outside to the inside through the sealed container; A welding tube which fixes the suction pipe to the sealed container and has a communication space therein for communicating with the suction pipe and opens toward the inside of the sealed container; A suction muffler installed inside the sealed container and removing noise of the working fluid sucked through the suction pipe and transferring the noise to the compression chamber; And a communication port formed of a flexible material having one end connected to the suction port of the suction muffler and the other end inserted into the communication space of the welding tube. According to claim 1, The working fluid suction device of the hermetic compressor characterized in that the communication between the communication space and the interior of the sealed container is closed by inserting the communication port into the communication space of the welding tube. A suction pipe installed to protrude into the sealed container and supplying a working fluid to the inside of the sealed container; A suction muffler installed inside the sealed container and removing noise of the working fluid sucked through the suction pipe and transferring the noise to the compression chamber; One end is connected to the suction port of the suction muffler and the other end is fixed to the suction pipe protruding into the inside of the sealed container, and comprises a communication port formed of a flexible material having a stretchable portion having a stretch in the middle portion. Operating fluid suction device of the hermetic compressor characterized in that the. 4. The working fluid suction device of claim 3, wherein the protruding portions of the suction pipe are inserted into the communication port, and they are connected to each other by connecting pins.