JPS6093189A - Enclosed type compressor - Google Patents

Abstract

PURPOSE:To prevent transfer or vibration of a compressor to a cabinet, by a method wherein a heat pipe coupled to an oil cooler is installed to that it surrounds the outer peripheral part of an enclosed casing, and the casing is located so that it is prevented from being supported to a cabinet. CONSTITUTION:A heat pipe 4 is coupled to an oil cooler 3 for cooling lubricating oil in an enclosed type compressor mounted in a refrigerator to form a lubricating oil cooling circulating passage 5. The heat pipe 4 is so installed as to allow for surrounding of the outer peripheral part of an enclosed casing 1. Further, the casing is located so that there is no need for the casing to be supported to a cabinet and vibration of the compressor is prevented from transfer to the cabinet. Further, securing of the heat pipe 4 to a terminal box 7 results in an increase in strength, and alternately, installation of radiation fins to the heat pipe 4 may cause increasing of the area of a radiating surface.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a lubricating oil cooling structure for a hermetic compressor, and in particular, it increases the strength of a heat pipe and reduces the vibration of a driving type U type machine to a cabinet of a refrigeration system. [Technical background of the invention and its problems 1] In recent years, in hermetic compressors, in order to prevent overheating of A method of cooling the lubricating oil stored at the bottom is to use a pipe to the heater 1.

That is, as shown in FIG. 1, an oil cooler 3 is provided in the lubricating oil 2 stored at the bottom of the hermetic housing 1.
The oil cooler 3 is connected to the pipes 1 to 4 to form a lubricating oil cooling circulation path 5, and the heat medium in the oil cooler 3 is evaporated with the high-temperature lubricating oil 2, and the heat of evaporation is used to raise the temperature of the lubricating oil 2. Reduced by 1! ing. The evaporated heat medium moves from the oil cooler 3 to the heat pipe 4, where it radiates heat, returns to a liquid heat medium, and flows Iη1 into the oil cooler 3 again.

The heat medium is circulated in a circulation path 5 formed by an oil cooler 3 and a heat pipe 4 (1) to lubricate the oil (W) to cool the oil (4)
are doing.

Conventionally, the heat pipe 4 is supported and fixed to cabinets 1 to G, such as a refrigerator, in which a hermetic compressor is housed.

However, since the P1-pipe 4 is supported and fixed to the cabinet 6, the vibration of the electric drive +jll (not shown) housed in the sealed casing 1 is transmitted through the heat pipe 4 to the cabinets 1-6. This caused the vibrations to be transmitted, causing vibrations and noise. In addition, it has been proposed to form a loop in a part of the heat pipe 4 in order to alleviate vibrations, but it has been proposed that a loop be formed in a part of the heat pipe 4, In the case of a gravity-flow type beat pipe without a heat pipe, this method could not be carried out because the loop-shaped heat pipe would slip into the liquid trap.

In addition, although the case where the heat pipe 4 is not housed in the casing is not shown in FIG. 2, in this case, the high-humidity heat pipe 4 is installed in a position that can be easily touched by relatively large hands. It is dangerous because there are C.

[Object of the Invention] The present invention was devised in view of the above-mentioned conventional problems and to effectively solve the problems, and its purpose is to increase the strength of a heat pipe by 1J, and to To provide a hermetic compressor capable of transmitting the vibrations of a driving electric motor to a 1-m refrigerating cabinet, etc.

[Summary of the Invention 1] In order to achieve the above object, the present invention forms a hermetic compressor by winding a P1-pipe around the outer periphery of a hermetic casing so as to surround it.

[Embodiments of the Invention] A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 3, reference numeral 1 denotes a closed casing, and at the bottom inside the closed casing 1, lubricant 81 and oil 2 are stored. Is this cold Jl in lubricant 2? An oil cooler 3 is provided. A heat pipe 4 is connected to the oil cooler 3, and a lubricating oil cooling circulation path 5 is formed.

The circulation path 5 is formed of a heat-conducting pipe made of copper, aluminum, stainless steel, etc., and contains fluorocarbons,
A heat medium such as ammonia is inserted.

The heat pipe 4 is connected to the sealed casing 1 as shown in FIG.
It is formed by winding it around the outer periphery of. Specifically, as shown in FIG. 5, a pipe 4 to the heater 1 is formed on the outer periphery of the closed casing 1 so as to draw an arc around the center of the pipe. The heat pipe 4 is fixed to a terminal box 7 which is attached to the outer wall of the sealed casing 1 to cover a sealed terminal (not shown) to protect the sealed terminal.

Furthermore, as shown in FIG. 4, a large number of fins 8 are provided on the heat pipe 4 in order to increase its heat dissipation area.

By forming the vibrators 1 to 4 on the outer periphery of the hermetic casing 1 so as to surround them, vibrations from the electric drive R (not shown) housed in the hermetic casing 1 are generated. Even if the heat pipe 4 is transmitted to the pipe 4, the vibration is not transmitted to the cabinet because the heat pipe 4 is not supported by a cabinet such as a refrigerator in which the hermetic compressor is installed. Therefore, vibration noise is not generated from 21-Yabinetsu 1~, and noise can be prevented.

Furthermore, by forming the heat pipe 4 along the outer circumference of the hermetic casing 1, the installation space for the hermetic compressor can be reduced.

Furthermore, since hermetic compressors are inherently high-temperature, measures are usually taken such as installing them in a location that is as inaccessible to human hands as possible, or installing an enclosure around their periphery. be. In addition, v) there is no need to provide a casing or the like to surround the heat pipe 4 formed on the outer periphery of the compressor, and costs can be reduced.

Furthermore, since the heat pipe 4 is fixed to the terminal box 7 formed in the sealed casing 1, the strength can be increased. There is no need to set it up separately.

[Effect of the invention] As is clear from the above explanation, according to the present invention, the following 6- It exhibits excellent effects.

(1) Noise can be prevented by not transmitting the vibration of the drive motor to the cabinet of the refrigeration equipment other than the closed type compression type.

(21 The strength of the heat pipe can be increased.

(3) Reduce the installation space for hermetic compressors! ! can be done.

(/I) The structure is simple and can be easily adopted.

[Brief explanation of the drawing]

1 and 2 are side views showing a heat pipe of a conventional hermetic compressor, FIGS. 3 to 5 are views showing a preferred embodiment of the present invention, and FIG. 3 is a side sectional view. , FIG. 4 is a side view, and FIG. 5 is a plan view. In the figure, 1 is a sealed casing, 2 is a lubricating oil, 3 is an oil cooler, 4 is a heat pipe, 5 is a lubricating oil cooling circuit, and 7 is a terminal box. Representative Patent Attorney Noriyuki Chika (1 other person) 7- Figure 1-ζ6 et al.-

Claims (2)

[Claims] (1) In order to cool the lubricating oil stored at the bottom of the sealed casing, an oil cooler was installed inside the lubricating oil, and a heat pipe was connected to the oil cooler to form a lubricating oil cooling circulation path. In the hermetic compressor, the above B 1 to
A hermetic compressor characterized in that a pipe is formed by winding the pipe around the outer periphery of the hermetic casing. (2) The hermetic compressor according to claim 1, wherein the heat pipe is fixed to a terminal box formed in the hermetic casing.