JPS5999080A - Compressor - Google Patents

Abstract

PURPOSE:To improve radiating effect by a method wherein a heat pipe, housed in an enclosed casing and connected to a radiator at the outside of the casing, is provided so as to ride over both atmospheres of lubricating oil and refrigerant in the enclosed type compressor provided in a refrigerating cycle. CONSTITUTION:In the refrigerating cycle 11, in which the compressor 10, a condenser 12, a capillary tube 13 and an evaporator 14 are connected by pipelines so as to constitute a closed circuit, the compressor 10 is consisting of the main body 16 of compressor consisting of an electric motor 17 and a cylinder device 18 and is accommodated in the enclosed casing 15 in a horizontal type. The heat pipe 23 of substantially arced shape is attached to the upper part of the side case 20a of the casing 15 so as to be located in a chamber 19a confined by the casing 15 and the cylinder device 18. This heat pipe 23 is connected to the radiating tube 26 of the radiator 25 at the outside of the casing 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a compressor suitable for assembly into a refrigeration cycle such as an air conditioner, and more particularly to a mounting structure for a heat pipe provided in a closed casing of a compressor.

[Technical background of the invention and its problems]

Generally, a hermetic compressor is provided in a refrigeration cycle such as an air conditioner or a refrigerator, and this compressor discharges a high-temperature, high-pressure refrigerant into the refrigeration cycle. Compressors are installed in locations that are affected by outside temperature, such as outdoors, but in order to ensure stable operation due to the relationship with the refrigeration cycle, they are not affected by temperature changes such as outside temperature, and are not affected by temperature changes such as outside temperature. It is desirable to maintain a constant temperature.

For this purpose, a conventional hermetic compressor is housed inside, a rod-shaped heat pipe 3 is arranged horizontally at the bottom of this hermetic casing 2, and one end of this heat pipe 3 is placed outside the hermetic casing 2. It is connected to the installed heat radiator 4, and the heat generated within the sealed casing 2 is radiated to the outside of the casing. At this time, the heat pipe 3 is provided with f+'=Mf' stored in the sealed casing 2 immersed in the oil 5.

However, when the Heat Tsuquib 3 is immersed in the lubricating oil 5, the flow of the lubricating oil 5 is small, so heat transfer within the Heat Tsuquib is not performed smoothly, the heat dissipation effect is poor, and the cooling effect of the lubricating oil 5 is affected. Main body 1
The amount of cooling, 'l, is small, and the compressor changes by a large degree 'f@ degrees following the change in the outside air temperature.

For this reason, some heat pipes are provided in a refrigerant atmosphere inside a closed casing. In this case, the refrigerant discharged from the compressor body is actively cooled by the Heat Tsuquib, but even when the outside temperature is low, the amount of cooling required to cool the discharged refrigerant is large, causing the compressor temperature and discharged refrigerant temperature to drop abnormally. However, there was a flI during the period, which could damage the compressor function.

[Purpose of the invention]

This invention takes the above-mentioned points into consideration, and has been designed to suppress temperature changes in the compressor to a small extent regardless of changes in the outside air temperature, and to effectively cool the compressor so that the compressor's compression function can be fully demonstrated. The purpose is to provide a compressor with

[Summary of the invention]

In order to achieve the above-mentioned object, the compressor according to the present invention houses a compressor main body of a commercially operated 1Mi compressor in a sealed casing, and a heated heat pipe installed inside the casing is placed in a radiator of an external cylinder of the sealed case 77f. In the connected type, the heat hose is arranged so as to straddle both the lubricating oil and the refrigerant atmosphere stored in the sealed casing.

[Embodiments of the invention]

Embodiments of a compressor according to the present invention will be described below with reference to the accompanying drawings.

FIG. 3 shows a compressor 1 of the present invention: a built-in refrigeration cycle 11. The discharged refrigerant discharged from the compressor l(+) is sent to the condenser 12, where it is condensed and liquefied, and this liquid refrigerant is then sent to the capillary tube 1
3 and 2) is guided to the porator 14, where it absorbs heat from the surroundings, evaporates, and then returns to the compressor 10.

The above compressor 1o is so-called horizontal 1f! There are two types of compressor bodies 16 inside a sealed casing 15.
is accommodated. The compressor main body 16 has an electric motor 17 and a cylinder device 18 driven by the electric motor,
The electric motor 17 and the cylinder device 18 cause the inside of the sealed casing 15 to be connected to the first, second and third channels 19.
It is divided into a + 19 b t 19 c. The sealed casing 15 covers both sides of the cylindrical casing body with side covers 20 a m 20 b.
20a.

20b is integrally attached, and lubricating oil 21 is stored inside.

On the other hand, a heat/throb device is attached to the upper part of the side case 20a of the sealed casing 15. He) No e Eve Z
3 has a substantially circular arc shape as shown in FIG. 4, and is installed vertically within the first channel 19a of the closed casing 15 so as to span both the lubricating oil 21 and the refrigerant atmosphere. A cylinder device i') is installed in the above-mentioned channels 19a.
Refrigerant is discharged from the cylinder device 18, and this discharged refrigerant passes through a refrigerant flow path U formed in the cylinder device 18, enters the two channels 19b, and then enters the electric motor 17.
It passes through the gap and is discharged from the third channels 19c to the discharge pipe 11a of the refrigeration cycle 11.

In addition, the heat novice % has a closed casing with an upper end of 15
The open end of the tube 26 of the radiator 5 protrudes outward.
connected to. The heat dissipation tube 26 is U-shaped or U-shaped to form a closed loop, and a large number of heat dissipation fins 27 are attached to the heat dissipation tube 26 in order to enhance the heat dissipation effect. In the closed loop of the heat/ξ tube 26, a Freon refrigerant such as Freon-12 and Freon-22 is used as a heat medium, and approximately 50% of the closed loop internal volume is used.
It will be included to some extent.

Therefore, the heat nozzle 23 portion within the hermetic compressor 10 is mostly filled with liquid refrigerant.

Next, the operation of the hermetic compressor 100 will be explained.

By energizing the electric motor 17, the electric motor 17 is started and the cylinder device 18 of the compressor main body 16 is operated.

By the operation of this cylinder device 18, the high-temperature, high-pressure gas refrigerant is discharged from the discharge valve passage into the first chamber 19a through the valve 29. The gas refrigerant discharged into the first channel 19a is cooled by exchanging heat with the liquid refrigerant in the heat pipe η, passes through the entire refrigerant flow path 24, enters the second channel 19b, and then flows through the first channel 4017. It is cooled, enters the third channel 19c, and is discharged from the third channel 19c to the discharge pipe tea.

On the other hand, since the heat pipe n in the first channel JQa is heated by the high-temperature gas cold 1# from the cylinder device 18, the liquid refrigerant in the heat pipe n boils and gasifies, and the liquid refrigerant in the radiator section is heated. Moving. The gas refrigerant sent to the radiator 5 is cooled here and becomes a liquid refrigerant, and is then sent to the compressor 10 again.
The inside of the sealed casing 15 is cooled by this heat dissipation phenomenon.

First, the gas refrigerant discharged from the cylinder device 18 is confined in the first channel d19a and heat is absorbed by the heat ξ Eve 23, which provides excellent heat exchange. The refrigerant boiled in the heat pipe n rises easily and smoothly, and heat transfer to the radiator section is performed smoothly and stably. Dimensions, 1st
The cold air filled inside Chiyanno'19a is cooled by the heat pipe 2:3.
J: I was guided to 2nd floor 19b. For this reason, the high-temperature gas refrigerant discharged from the motor cylinder is cooled to 3% 17 and 1 (011 per day), which reduces the lifespan of the motor windings. 'j L, +j, tlS loss of electric/?J1 aircraft 17 can be effectively prevented.

By the way, the heat beam is arranged so as to span both the refrigerant atmosphere and the lubricating oil, and when the outside temperature is low and the consolation temperature is low, there is a large amount of heat in the lubricating oil.
■4 refrigerant is the city, if'+'j pure oil liquid 01 level rises to -. Because of this, the compressor temperature! If the pheasant is low (outside temperature is low), heat fleas Eve 23's moisture r.
i1 The amount of oil immersion is large, and the amount of heat flux exposed to the refrigerant atmosphere is relatively small, making it possible to reduce the amount of cooling. This is because lubricating oil has less oil flow and less cooling effect than the discharge 113 refrigerant.

In addition, when the outside temperature is high, the lubricating oil level is low and the amount of heat exposed in the refrigerant atmosphere increases, allowing for a greater cooling effect. Regardless of the change in temperature [r1], the compressor 4's change in temperature can be suppressed to a small extent, and the compressor 1...jt can exhibit stable performance.

Figures 51-1 and 6 show various modifications of the heat chime. Among these, 1. The heat nozzle 23a shown in FIG.
It has a mold shape and opens from the lower end P of the heat ξ ino 2;
a Q is moved to the higher position 11 than the other ni1ku'-:g R.

As a result, the PQ part of Heat Nomi Eve 23a becomes PR
The heat absorption area is larger than that of the Heat Nomi Eve 23n.
Since the refrigerant inside circulates in the direction of arrow A, heat transfer within the closed loop becomes even smoother.

1 puhi? I'l,' 5 l! The heat pipe shown in 7j has a semicircular arc shape, the lower end is closed, and -
The open end of H1".;4 is the heat dissipation tube 2 of the heat dissipator 25a.
It is designed to be connected to Ga by 4ψ. Therefore, by curving the heat tube 23b into an arc shape, a large heat absorption area can be obtained.

The curved shape of the Heat Nomi Eve may be S-shaped to further increase the heat absorption area, or
It may be arranged in a zigzag shape from the top to the bottom within the channels.

In one embodiment of the present invention, a horizontal hermetic compressor has been described, but a vertical hermetic compressor may also be used.

〔Effect of the invention〕

As described above, in the compressor according to the present invention, the heat nozzle is arranged so as to straddle the lubricating oil and refrigerant atmospheres, so when the outside temperature is low, the lubricating oil curved surface is high, and the heat nozzle is cooled by the heat nozzle. When the outside temperature is high, the cooling effect can be increased, and therefore, the compressor temperature fluctuation can be suppressed to a small level regardless of the change in the outside temperature. For this reason, stable compressor function is always activated 4'! ■You can do it.

When the heat pipe is arranged vertically in an arc, C-shape, or S-shape, the heat-absorbing area of the heat pipe becomes larger, and the cooling effect of the compressor can be further enhanced.

Furthermore, if the heat nozzle is installed in the discharge chamber that discharges from the cylinder device of the compressor main body,
The high-temperature discharged refrigerant can be actively cooled by the heat pump, and after this cooling, the discharged refrigerant can be guided to the motor and cooled down. This effectively prevents burnout of the motor windings and extends its life. can be increased.

Furthermore, when the heat pipe is attached to the side case of a sealed casing, the heat pipe can be attached to the side case in advance, making it easy to assemble the heat pipe.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing a refrigeration cycle incorporating a conventional hermetic compressor, Fig. 2 is a plan cross-sectional view taken along the l+-■ line in Fig. 1, and Fig. 3 is a diagram showing a refrigeration cycle incorporating a compressor according to the present invention. Figure 4 is a diagram taken along the line ■-■ in Figure 3, and Figures 5 and 6 each show modifications of the heat pipe disposed inside the hermetic casing of the compressor. It is a diagram. DESCRIPTION OF SYMBOLS 10... Sealed compressor, 11... Refrigeration cycle, 15... Sealed casing, J6... Compressor body, 17... Electric motor, 18... Cylinder device,
19a, 19b, 19c...chambers, 20
a, 20b...side case, 21...lubricating oil,
? , 3 , 23a, 23b...he) pipe, 2
4... Refrigerant flow path, 2!5T Ha... Heat radiator, 26
* 26 a... Heat radiation tube, 27... Heat radiation type.

Claims (1)

[Claims] 1. A compressor body driven by an electric motor is housed in a sealed casing, 2. A heat ξ
A compressor in which the IZO is connected to a radiator installed outside the sealed casing, wherein the heat quiz is arranged so as to span both the lubricating oil stored in the sealed casing and the refrigerant atmosphere. . 2. The compressor according to claim 1, wherein the hermetic casing is configured to be a horizontal type by integrally covering the end of the cylindrical casing body with a side case, and a heat pipe is attached to the upper part of the side case. . 3. The heat pipe is a discharge side channel of high-temperature gas refrigerant discharged from the cylinder device of the compressor main body. The compressor according to claim 1, which has a C-shape, is arranged along the circumferential direction of the sealed casing, and has at least one end connected to a radiator. 5. The compressor has a C-shape, a C-shape, or 2. The compressor according to claim 1, wherein the compressor has an S-shape, each end of which is connected to a radiator, and one end of the heat nozzle is located at a higher position than the other end.