KR20080086100A - Hermetic type compressor - Google Patents

Abstract

A hermetic compressor is provided to guide the refrigerant which is guided into a hermetic container to a suction muffler directly by fixing a guiding member which is made of rubber between an inlet of the muffler and a fixed member, thereby preventing the guiding member from deviating. A guiding member(60), which is made of rubber, is connected to an inlet(52). A flange part(61) is formed at one end of the guiding member to increase a contact area with an inner surface of a closed container. An insertion part(62), which is inserted in the inlet, is formed at the other end of the guiding member. The insertion part is arranged through a plurality of insertion ribs(62a-62d) which are mutually separated. Each rib extends toward the inlet while curved enough to contact the inlet. The front end of a body part is formed with a support part(64) supported by an outer peripheral surface of the inlet. The guiding member is fixed between the inlet and a fixed member(70). The fixed member includes a body(71) and a plurality of extended parts(72) which extend toward the inlet. The body has a refrigerant flowing hole(71a) and is supported by an inner surface through first catching parts(71b). Second catching parts(72a) are arranged at the rear ends of the extended parts. Guide projections(73) are arranged at the upper center of the body.

Description

Hermetic Compressor {HERMETIC TYPE COMPRESSOR}

1 is a cross-sectional view schematically showing the overall structure of a hermetic compressor according to an embodiment of the present invention.

2 is an exploded perspective view showing the structure of the guide member and the fixing member in the hermetic compressor according to the preferred embodiment of the present invention.

3 is a front view showing a state in which the guide member is fixed to the suction muffler through the fixing member in the hermetic compressor according to the preferred embodiment of the present invention.

4 is a cross-sectional view taken along the line A-A of FIG. 3 and viewed from the arrow direction.

FIG. 5 is a cross-sectional view taken from the arrow direction after cutting along FIG.

Explanation of symbols on the main parts of the drawings

50: suction muffler 52: inlet

52a: first guide groove 60: guide member

62: insertion portion 62a, 62b, 62c, 62d: insertion rib

64: support portion 64a: through groove

64b: second guide groove 70: fixing member

71: body 71a; Refrigerant Distribution Hole

71b: first locking portion 72: extension portion

72a: second locking portion 73: guide projection

The present invention relates to a hermetic compressor, and more particularly to a hermetic compressor having an improved connection structure between a suction pipe and a suction muffler for guiding an external refrigerant into the hermetic container.

In general, the hermetic compressor is adopted to compress the refrigerant in a refrigerating cycle of a refrigerator or an air conditioner, and forms an appearance through a hermetic container, and a compression unit having a compression chamber to compress the refrigerant in the hermetic container. And a driving unit providing a driving force according to the compression of the refrigerant.

In addition, in order to supply the refrigerant to the compression unit, one side of the sealed container is provided with a suction pipe for guiding the low pressure refrigerant through the evaporator of the refrigeration cycle into the sealed container, the other side of the sealed container is compressed in the sealed container through the compression unit. A discharge pipe for guiding the high pressure refrigerant having been compressed to the condenser side of the refrigeration cycle is installed.

On the other hand, one side of the compression unit is provided with a suction muffler provided as an injection in order to reduce the flow noise of the suction refrigerant sucked into the compression chamber, between the outlet of the suction pipe and the inlet of the suction muffler is usually connected via a coil spring.

The coil spring allows the refrigerant guided into the sealed container along the suction pipe to be directly introduced into the suction muffler without being greatly influenced by the ambient temperature, while preventing the driving vibration of the compression unit and the driving unit from being transferred to the sealed container through the suction pipe. In general, the inlet end of the coil spring is fitted to the outlet of the suction pipe and the outlet end is fitted to the inlet of the suction muffler.

However, since the conventional hermetic compressor has a structure in which a coil spring made of metal is directly connected to the inlet side of the suction muffler provided as an injection product, the outlet end of the coil spring and the inlet of the suction muffler are repeatedly contacted by the vibration of the compressor. If there is a relatively large contact noise occurs, the refrigerant guided to the suction muffler is passed between the coil springs, there was a variety of problems such as cold power is lowered.

Therefore, in recent years, a hermetic compressor that guides the refrigerant in the suction pipe to the suction muffler by using a guide member made of rubber material having both ends open and forming a hollow cylindrical shape instead of the coil spring is increasing.

Here, the guide member once covers the inner surface of the sealed container through the inner circumference of the suction pipe, and the other end is coupled to the suction muffler by being fitted into the inlet formed in the suction muffler.

In addition, the guide member provided with the flexible rubber material is excellent in adhesion and effectively blocks the leakage of the refrigerant to the outside, and there is less risk of inducing noise when performing the refrigerant guiding action. It is increasing.

However, since the guide member is made of a rubber material and has high fluidity, the guide member may be easily separated from the inlet of the suction muffler due to the vibration generated during the refrigerant compression process of the hermetic compressor or the impact applied from the outside.

The present invention is to solve such a problem, the object of the present invention can be more firmly fixed to the suction muffler guide member provided with a rubber material to guide the refrigerant guided into the sealed container directly into the suction muffler. It is to provide a hermetic compressor that is prepared to.

In order to achieve the above object, the hermetic compressor according to the present invention is a hermetically sealed container. A suction pipe coupled to the hermetic container to guide an external refrigerant into the hermetic container, a compression unit provided to compress the refrigerant guided into the hermetic container, and to reduce the flow noise of the refrigerant sucked into the compression unit; Suction muffler connected to the compression unit and a hollow tubular shape formed of a rubber material and open at both ends to directly guide the refrigerant guided into the sealed container through the suction pipe into the suction muffler. A guide member which covers the inner surface of the inlet side of the suction pipe and is connected to the inlet of the suction muffler through the other end, and the guide member is provided to fix the guide member between the inlet of the suction muffler and the guide member. The fixing member is inserted, and the fixing member is hooked to the inner surface of the guide member outside the inlet. And a first engagement portion which is supported, characterized in that it includes a second engaging supported hanging in the inner surface of the inlet inside the suction muffler.

And the government material is characterized in that the prepared as an injection.

The guide member may include a support provided to be supported on an outer circumference of the inlet muffler, and the fixing member may include a coolant distribution hole for distributing a coolant and the first catching part to be supported on an inner surface of the support. And extending inwardly from the body to the inlet of the suction muffler, and including a plurality of extensions spaced apart from each other by a predetermined interval along the circumference of the refrigerant flow hole, wherein the second catching portions are provided in hook shapes at the ends of the respective extension portions. It is done.

In addition, in order to guide the fastening operation of the fixing member, the body is provided with a guide protrusion extending a predetermined length toward the inlet of the suction muffler in a state protruding outward, and the guide at one side of the inlet and the support of the suction muffler. Each guide groove is formed so that the protrusion is inserted.

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

As shown in FIG. 1, the hermetic compressor according to the present embodiment is provided in the hermetic container 10 formed by combining the upper container 10a and the lower container 10b, and the inside of the hermetic container 10. Compression unit 20 for performing a compression action of the refrigerant and a driving unit 30 for providing a driving force according to the compression of the refrigerant.

On one side and the other side of the sealed container 10, the suction pipe 11 for guiding the low pressure refrigerant through the evaporator of the refrigerating cycle into the sealed container 10 and the inside of the sealed container 10 through the compression unit 20, respectively. A discharge tube 12 for guiding the compressed high-pressure refrigerant to the condenser side of the refrigeration cycle is installed.

The compression unit 20 includes a cylinder 21 provided at an upper side of the frame 40 to form a compression chamber 21a, and a piston 22 installed in the compression chamber 21a to enable a linear reciprocating motion. And a refrigerant discharge chamber 23a coupled to the cylinder 21 to seal the compression chamber 21a and associated with the discharge pipe 12 and a refrigerant suction chamber 23b associated with the suction pipe 11. The cylinder head 23 provided so as to be partitioned from each other and between the cylinder 21 and the cylinder head 23 are sucked into the compression chamber 21a from the refrigerant suction chamber 23b or the refrigerant discharge chamber 23a from the compression chamber 21a. The valve device 24 which controls the flow of the refrigerant | coolant discharged to (circle) is provided.

The driving unit 30 is to provide a driving force for the piston 22 to linearly reciprocate in the compression chamber 21a, the stator 31 and the stator 31 fixed to the outer side of the lower frame 40, Rotor 32 is provided inside the stator 31 so as to rotate by electromagnetic interaction with), and a rotating shaft 33 is provided to be pressed into the center of the rotor (32).

The upper part of the rotating shaft 33 passes through the hollow part 41 formed in the center of the frame 40 and extends to the upper part of the frame 40, and the upper end of the rotating shaft 33 extending to the upper part of the frame 40 is the rotating shaft 33. Eccentric shaft portion (33a) to rotate eccentrically during the rotation of (), between the eccentric shaft portion (33a) and the piston 22 for converting the eccentric rotational movement of the eccentric shaft portion (33a) to the linear reciprocating motion of the piston (22) The connecting rod 25 is installed.

Through this structure, when the rotating shaft 33 is rotated together with the rotor 32 by the electromagnetic interaction between the stator 31 and the rotor 32 of the driving unit 30, the rotating shaft through the connecting rod 25 The piston 22 connected to the eccentric portion 33a of 33 undergoes a linear reciprocating motion inside the compression chamber 21a, and thus a pressure difference is generated between the inside and the outside of the compression chamber 21a. Due to this pressure difference, the low pressure refrigerant passing through the evaporator of the refrigerating cycle is sucked into the compression chamber 21a through the suction pipe 11 and the refrigerant suction chamber 23b, compressed, and compressed and discharged from the compression chamber 21a. The high pressure refrigerant is supplied to the condenser side of the refrigerating cycle via the refrigerant discharge chamber 23a and the discharge tube 12.

In addition, a suction muffler 50 is installed below the cylinder head 23 to reduce the flow noise of the refrigerant sucked into the compression chamber 21a.

The suction muffler 50 communicates the main body 50A forming a predetermined resonance space 51 of the inner space with the resonance space 51 and the refrigerant suction chamber 23b of the cylinder head 23. One end is provided with a refrigerant guide tube 50B which is inserted into the main body 50A and the other end extended to the outside is inserted into the refrigerant suction chamber 23b, and one side of the main body 51 has a circular inlet. 52 is formed (see FIG. 2).

On the other hand, in the hermetic compressor according to the present embodiment, the refrigerant guided into the hermetic container 11 through the suction pipe 11 at the inlet 52 side of the suction muffler 50 greatly influences the ambient temperature. Guide member 60 is installed to guide directly into the suction muffler (50) without receiving.

2 to 5, the guide member 60 is provided in a hollow cylindrical shape with both ends open through a flexible rubber material, such a guide member 60 is formed once the inner circumference has a large diameter The inner surface of the inlet side of the suction tube 11 through the cover 10 in close contact with the state, and is connected to the inlet 52 through the other end outer periphery formed small diameter.

Here, one end of the guide member 60 in close contact with the inner surface of the sealed container 10 is formed with a flange portion 61 for increasing the contact area with the inner surface of the sealed container 10, the other end of the guide member 60 The insertion part 62 inserted into the inlet 52 is formed. Insertion portion 62 is provided through a plurality of insertion ribs (62a, 62b, 62c, 62d) spaced apart from each other along the circumferential direction, each of the insertion ribs (62a, 62b, 62c, 62d) has an outer surface of the inlet ( Extend inwardly into the inlet 52 to be in contact with 52).

And between the insertion portion 62 and the flange portion 61 to form a body portion 63 of the guide member 60, the tip of the body portion 63 toward the insertion portion 62 is the suction muffler 50 The support portion 64 is formed on the outer surface of the inlet 52 of the periphery.

In addition, the guide member 60 is firmly fixed between the inlet 52 and the fixing member 70 through a fixing member 70 provided with an injection molding.

The fixing member 70 includes a body 71 prepared to be hung on the inner surface of the support 64 of the guide member 60, and a plurality of extensions 72 extending from the body 71 into the inlet 52. ).

Body 71 is provided with a refrigerant distribution hole (71a) for the circulation of the refrigerant inside, the outer portion of the body 71 has a rectangular shape and the inner surface of the support portion 64 through the first catching portion (71b) on each corner Hanging on is supported.

In addition, the extension part 72 is provided in plural numbers spaced apart from each other by a predetermined interval along the circumference of the refrigerant flow hole (71a), the inlet 52 of the suction muffler (50) at the end of each extension part (72) A second catching portion 72a provided in a hook form is provided to be caught and supported on the inner circumferential surface thereof.

In the present embodiment, the extension portion 72 is formed of three located on both the left and right sides and the lower center side of the body 70, based on Figure 2, the upper center of the body 70, the outer periphery of the body 71 A guide protrusion 73 extending a predetermined length in the direction of the inlet 52 of the suction muffler 50 is provided in the protruding direction 72.

The guide protrusion 73 guides the fastening operation of the fixing member 70 and at the same time prevents the rotation of the fixing member 70 fastened to the inlet 52 so that the fixing member 70 is more stably fastened. And a projection support portion 73a having a shape corresponding to the extension portion 72 from which the second catching portion 72a is removed is formed at the lower portion of the guide protrusion 73.

A first guide groove 52a is formed at one side of the inlet 52 for insertion of the guide protrusion 73 so as to communicate with the inlet 52, and guides corresponding to the position of the first guide groove 52a. The support part 64 of the member 60 is provided with a second guide groove 64a.

When fixing the guide member 60 through the fixing member 70 configured as described above, the fixing member 70 is first inserted before the insertion portion 62 of the guide member 60 is inserted into the inlet 52. The guide member 60 is inserted into the inside.

At this time, the fixing member 70 is guided to the guide member 60 through the flange portion 61 side such that the first catching portion 71b of the body 71 is supported on the inner surface of the support portion 64 of the guide member 60. Is inserted into the interior, each of the extension portion 72 and the projection support portion 73a is disposed between the insertion ribs 62a, 62b, 62c, 62d, the guide projection 73 is the guide member 60 ) Into the second guide groove 64a.

In this state, the insertion ribs 62a, 62b, 62c and 62d of the guide member 60 and the extension 72 of the fixing member 70 are inserted into the inlet 52 of the suction muffler 50. In this case, the guide protrusion 73 is inserted into the first guide groove 52a to guide the insertion operation of the guide member 60 and the fixing member 70.

In addition, the second locking portion 72a of each of the extension portions 72 provided in the form of hooks is slightly retracted into the inlet 52 in the process of passing through the inlet 52, and then completely passes through the inlet 52. Laid out again, the inner surface of the inlet 52 is caught, and the insertion ribs 62a, 62b, 62c, and 62d of the guide member 60 and the extension portion 72 of the fixing member 70 are The inlet 52 is maintained in stable contact with the state. For reference, FIG. 3 is a front view of the guide member 60 fixed to the suction muffler 50 through the fixing member 70, and FIGS. 4 and 5 are taken along the line AA and BB of FIG. 3, respectively. The cross section seen in the direction of the arrow after being cut away is shown.

Therefore, in this state, the body 71 of the fixing member 70 is supported by the inner surface of the support 64 of the guide member 60 through the first catching portion 71b, and the extension of the fixing member 70 ( Since the 72 is caught on the inner surface of the inlet 52 of the suction muffler 50 through the second catching portion 72a, the guide member 60 is fixed to the inlet 52 and the fixing member of the suction muffler 50. It is possible to be firmly fixed between the 70.

In this case, the guide member 60 made of a rubber material is sandwiched between the suction muffler 50 and the fixing member 70, each of which is formed of an injection molding, so that the shape deformation is suppressed, so that the guide member 60 is prevented from falling back from the inlet 52 of the suction muffler 50. do.

As described above in detail, the hermetic compressor according to the present invention has a rubber guide member for guiding the refrigerant guided into the hermetic container directly into the suction muffler, between the inlet and the fixing member of the suction muffler, each of which is provided with an injection molding. It can be effectively prevented from deviating from the guide member through the vibration caused by the compression of the refrigerant or the impact applied from the outside.

Claims (4)

With sealed containers. A suction pipe coupled to the hermetic container to guide an external refrigerant into the hermetic container, a compression unit provided to compress the refrigerant guided into the hermetic container, and to reduce the flow noise of the refrigerant sucked into the compression unit; Suction muffler connected to the compression unit and a hollow tubular shape formed of a rubber material and open at both ends to directly guide the refrigerant guided into the sealed container through the suction pipe into the suction muffler. In the hermetic compressor comprising a guide member which covers the inner surface of the sealed container to the outlet side of the suction pipe and is connected to the inlet of the suction muffler through the other end, The guide member is provided with a fixing member provided to fix the guide member between the inlet of the suction muffler, the fixing member is a first catching portion that is supported on the inner surface of the guide member outside the inlet, and A hermetic compressor comprising a second catching portion supported by an inner surface of the inlet suction muffler. The method of claim 1, The fixing member is a hermetic compressor, characterized in that provided by the injection. The method of claim 1, The guide member includes a support provided to be supported on the outer peripheral surface of the inlet circumference of the suction muffler, The fixing member includes a body having a refrigerant flow hole for distributing a refrigerant and the first catching part, the body being provided to be caught and supported on an inner surface of the support part, and extending from the body into the inlet of the suction muffler, along the circumference of the refrigerant flow hole. It includes a plurality of extensions spaced apart from each other by a predetermined interval, The second locking portion is a hermetic compressor, characterized in that provided in the form of a hook at the end of each extension. The method of claim 3, wherein In order to guide the fastening operation of the fixing member, the body is provided with a guide protrusion extending a predetermined length toward the inlet of the suction muffler in a state protruding outward, and the guide protrusion is formed at one side of the inlet and the support of the suction muffler. Hermetic compressor, characterized in that the guide groove is formed so that each is inserted.

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