KR200157071Y1 - A compressor case with adiabetic structure - Google Patents

Abstract

The present invention relates to a compressor case having a heat insulation structure to minimize heat exchange between a high temperature region and a low temperature region in a hermetic compressor of a refrigerator.

The compressor case having the heat insulation structure is a hermetic compressor in which a high temperature part such as a cylinder 13, a discharge muffler 17, a discharge pipe 19, etc. is densely installed around the suction muffler 16 inside the sealed case. Insulation member 20 fixed to the inner upper end of the sealing case (sense 21) so as to block the radiant heat transmitted to the high temperature portion to the suction muffler (16) and to secure the maximum space around the suction muffler (16), and It includes a heat insulating material 26 is wrapped around the entire outer surface of the suction muffler (16).

Accordingly, the present invention provides a heat insulating member 20 between the high temperature region and the low temperature region of the hermetic compressor of the refrigerator to block radiant heat from the high temperature portion so that heat exchange is minimized, thereby improving the compression performance of the compressor and the cooling ability of the system. It is effective.

Description

Compressor Case with Insulation

The present invention relates to a compressor, and more particularly has a heat insulating structure to minimize the heat exchange between the hot zone and the cold zone in a hermetic compressor having a means used for the refrigerator and having a means for sucking and discharging the refrigerant inside the sealed case. A compressor case is related.

In a refrigerator, a compressor is a means for converting rotational force due to electrical energy into mechanical energy of reciprocating motion, and pressurizes a refrigerant having a low boiling point to piston motion to bring it into a high pressure (about 12 atm) state.

The high pressure refrigerant is cooled in the condenser to become a liquid state, and the liquid refrigerant absorbs latent heat of ambient air as it is gasified in the cooler. Through this process, when one refrigeration cycle is completed, air is continuously supplied while circulating internal air.

Referring to FIG. 1, the compressor 10 has a structure in which a suction pipe 18 and a discharge pipe 19 of a refrigerant are bonded to the outside of the sealed case 11 and a high pressure generating means is mounted therein. The high pressure generating means, which is the main operating part of the compressor, is composed of a cylinder 13, a piston 14, a valve assembly 15, an eccentric shaft 12, a motor (not shown), and the like.

In view of the operation of the high pressure generating means, the cam motion of the eccentric shaft 12 rotated by the motor reciprocates the piston 14 in the cylinder 13, and the valve assembly 15 is applied to the pressure difference between the two surfaces formed at this time. It is passively opened and closed to move the refrigerant in one direction.

In the hermetic compressor, the refrigerant entering the suction pipe 18 is filled in the sealed case 11 and then introduced into the cylinder 13 through the suction muffler 16, and the refrigerant compressed in the cylinder 13 discharges the muffler ( 17 is sent from the discharge pipe 19 to a condenser (not shown).

In this case, the suction muffler 16 and the discharge muffler 17 are used to reduce the compressor noise which occupies most of the operation noise of the refrigerator. The refrigerant introduced into the suction muffler 16 is discharged at a relatively low temperature (about 70 ° C.). The refrigerant discharged to the muffler 17 is in a state of high temperature (about 150 ° C.) under the action of high pressure.

By the way, in the conventional compressor, high temperature parts, such as the cylinder 13, the discharge muffler 17, and the discharge pipe 19, are crowded around the suction muffler 16. As shown in FIG. With this configuration, the refrigerant sucked into the cylinder 13 receives heat from the high temperature portion through which the high temperature and high pressure refrigerant flows, and the temperature is increased.

The higher the temperature of the refrigerant to be sucked, the lower the density of the refrigerant to be sucked, so that the mass flow rate of the refrigerant is lowered, which affects heat exchange in the cooler of the refrigerator's cooling system. That is, there is a disadvantage that the cooling capacity of the system is lowered, which in turn causes the compressor performance.

Accordingly, the present invention is a heat insulating structure that improves the compression performance of the compressor and the cooling capacity of the system by minimizing the heat exchange between the high temperature region and the low temperature region in a hermetic compressor having a means used for a refrigerator and having a means for sucking and discharging the refrigerant inside the sealed case. It is an object to provide a compressor case having a.

1 is a plan view showing the interior of the hermetic compressor according to the present invention.

2 is a configuration diagram of a compressor schematically showing an insulating structure according to the present invention.

* Explanation of symbols for main parts of the drawings

10 compressor 11 sealed case (conventional)

12: eccentric shaft 13: cylinder

14: piston 15: valve assembly

16: suction muffler 17: discharge muffler

18: suction pipe 19: discharge pipe

20: heat insulation member 21: sealed case (this invention)

22: iron plate 23: insulation plate

26: heat insulation

In order to achieve the above object, the present invention is a hermetic compressor in which a high temperature part such as a cylinder, a discharge muffler and a discharge pipe is installed in a sealed case around a suction muffler: to block radiant heat transmitted to the suction muffler. In addition, the insulating member is fixed to the inner top of the sealed case to secure the maximum space around the suction muffler; And it provides a compressor case having a thermal insulation structure characterized in that it comprises a heat insulating material is wrapped around the entire outer surface of the suction muffler bonded.

At this time, the heat insulating member is provided with an iron plate bonded to the sealing case, and a heat insulating plate bonded to the side of the hot plate in the direction of the hot plate.

In the meantime, the heat insulating member may be an engineering plastic having heat and oil resistance instead of the iron plate and the heat insulating plate.

EXAMPLE

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

1 is a plan view showing the interior of the hermetic compressor according to the present invention.

The present invention is applied to a hermetic compressor in which a high temperature part such as a cylinder 13, a discharge muffler 17, a discharge pipe 19, etc. is densely installed around the suction muffler 16 inside the sealed case.

In the hermetic compressor 10, the cylinder 13, the discharge muffler 17, the discharge pipe 19, and the pipe shown by the double-dotted line are a high temperature / high pressure region which occupies a part of the space of the sealed case 11, and the suction muffler. The lower part of 16 and the sealing case 11 are low temperature and low pressure area | regions.

Since the suction muffler 16 is connected to the suction pipe 18 but does not maintain airtightness, the refrigerant flowing into the suction pipe 18 is filled in the sealed case 11, and some of the suction pipe 18 is returned to the suction pipe 18. It flows back and is sucked into the cylinder 13.

In this case, the present invention blocks the radiant heat transmitted to the suction muffler 16, and fixes the heat insulating member 20 to the inner upper end of the sealed case 12 to secure the maximum space around the suction muffler 16. do.

Heat is moved by conduction, convection, and radiation, and the heat insulating member 20 of the present invention has an object of effectively blocking radiant heat.

As described above, since the refrigerant around the suction muffler 16 also flows into the cylinder 13, a heat insulating member 20 is installed to secure the maximum space around the suction muffler 16 to block radiant heat from the high temperature / high pressure region. Let's do it.

In addition, the present invention wraps the entire outer surface of the suction muffler 16 to bond the heat insulating material (26). In a dense structure inside the sealed case 11, it is difficult to expect complete blocking of radiant heat to the heat insulating member 20, so that the flexible and stretchable heat insulating material 26 is wound.

2 is a block diagram of a compressor schematically showing an insulating structure according to the present invention.

The heat insulating member 20 of the present invention includes an iron plate 22 bonded to the sealed case 21 and a heat insulating plate 23 bonded to the side surface of the iron plate 22 in the direction of the high temperature portion.

The iron plate 22 lowers the height in consideration of the interference with the internal parts in the sealed case 21, and the heat insulating plate 23 is increased so that the interference with the internal parts.

As the insulating material, urethane foam, foam styrene, polyethylene foam, phenool foam, and lead made of diatomaceous earth may be used.

On the other hand, the heat insulating member 20, instead of the iron plate 22 and the heat insulating plate 23, it is also possible to use a non-metal material such as engineering plastic (engineering plastic) having heat resistance and oil resistance.

Engineering plastics (EP) are industrial materials that replace metals in operating parts and structural parts of various machines, and can be classified into the following types and properties.

(1) Polyamide (PA): Good surface hardness, bending strength, alkali resistance and hygroscopicity.

(2) Polyacetal (POM): Good fatigue resistance and friction characteristics. Weather resistance is not good.

(3) Polycarbonate (PC): Good heat resistance, low humidity property and fatigue resistance. Lack of solvent resistance.

(4) Polyphenylene oxide (PPO): Good heat resistance and workability. Lack of solvent resistance.

(5) Polybutylene terephthalate (PBT): Good wear resistance. Weak in acid, alkali.

Among the above five engineering plastics, polyamide is excellent in heat resistance, chemical resistance, flame retardancy, and processability, and thus, about 600 kinds have been developed by complexing with other materials, and are suitable for application as an insulating material of the present invention.

In addition, although engineering ceramics having excellent heat resistance may be used instead of engineering plastics, it should be noted that they are brittle.

On the other hand, if the metal plate, such as an aluminum thin plate which kept the mirror surface state, is used instead of the iron plate 22, the heat insulation board 23 can also be abbreviate | omitted. Aluminum itself has a high heat transfer rate, but a well polished surface has a high reflectance, which can block radiant heat.

As described above, the compressor case having a heat insulation structure according to the present invention is used in a refrigerator, and by installing a heat insulation member 20 between a high temperature region and a low temperature region in a hermetic compressor having a means for sucking and discharging a refrigerant inside the sealed case, By blocking the radiant heat from the high temperature part to minimize the heat exchange, it has the effect of improving the compression performance of the compressor and the cooling capacity of the system.

Although the present invention has been illustrated and described with reference to certain preferred embodiments, the present invention may be modified and modified in various ways without departing from the spirit or the field of the present invention provided by the following utility model registration claims. It will be readily apparent to one of ordinary skill in the art that it can be used.

Claims (3)

In a hermetic compressor in which a high temperature part such as a cylinder 13, a discharge muffler 17, a discharge pipe 19, etc. is densely installed in a sealed case around the suction muffler 16, wherein the high temperature part is attached to the suction muffler 16. Thermal insulation member 20 is fixed to the inner top of the sealed case 21 to block the radiant heat to be transmitted and to secure the maximum space around the suction muffler (16); And a compressor case having a heat insulating structure, characterized in that it comprises a heat insulating material (26) which is joined to surround the entire outer surface of the suction muffler (16). The method of claim 1, wherein the heat insulating member 20; An iron plate 22 bonded to the sealed case 21; And a heat insulating plate 23 bonded to the side surface of the hot plate in the direction of the iron plate 22. The compressor case according to claim 2, wherein the heat insulating member (20) uses an engineering plastic having heat and oil resistance instead of the iron plate (22) and the heat insulating plate (23).