JPH01374A - hermetic compressor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hermetic compressor used in refrigeration equipment such as refrigerators and air conditioners.

BACKGROUND OF THE INVENTION In recent years, hermetic compressors have become smaller and more space-saving.

An example of the conventional hermetic compressor mentioned above will be described below with reference to the drawings, using Japanese Patent Application Laid-open No. 147581/1981.

FIG. 3 shows a cross section of a conventional hermetic compressor.

1 is an airtight container, 2 is a compression element, 3 is an electric element, 4 is refrigeration oil sealed in the airtight container 1, and 5 is the electric element 3.
6 is a crankshaft directly connected to the rotor 6, 7 is an oil pump provided at the lower end of the crankshaft 6, 8 is a cross slider that constitutes the compression element 2, 9 is the compression element This is the cylinder head that makes up part 2.

The operation of the hermetic compressor configured as above will be described below.

When the electric element 3 is driven, the crankshaft 6 rotates ltw,
Refrigerating machine oil 4 is sucked up by an oil pump 7 provided at the lower end of the crankshaft 6 and blown out from the upper part of the cross slider 8. A part of the blown out refrigerating machine oil 4 falls along the outer circumferential surface of the compression element 2 into the F part of the sealed container 1, and a part falls along the inner circumferential surface of the sealed container 1 to the lower part of the sealed container 1. I'm going to go. Refrigerating machine oil 4 that has fallen to the lower part of sealed container 1 is sucked up again by oil pump 8, and the operation is repeated.

Problems to be Solved by the Invention However, in the above configuration, the refrigerating machine oil 4 that falls along the outer peripheral surface of the compressing element 2 absorbs the heat of the compressing element 2 and is converted into hot refrigerating oil into the sealed container 1. It collects at the bottom of the
In addition, the frozen oil 4 that falls along the inner circumferential surface of the sealed container 1 radiates heat only at the bottom of the sealed container 1, and falls from the top of the sealed container 1 while radiating heat one after another. It's radiating heat. Due to these two points, a considerable amount of heat must be dissipated at the bottom of the sealed container 1, but the contact area between the bottom of the sealed container 1 and the refrigerating machine oil 4 that collects there is small, and sufficient heat radiation cannot be achieved. Since the large river of the container 1 cannot be lowered very much, the volume of absorption gas becomes small, resulting in problems in that efficiency cannot be increased and in that it is difficult to ensure reliability.

In view of the above-mentioned problems, the present invention provides an efficient and reliable hermetic compressor that improves the heat dissipation of refrigerating machine oil from a hermetic container.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a spiral groove having a central axis that connects the upper end of the airtight container and the lower end of the airtight container. It is equipped with a structure in which it is provided on the peripheral surface.

Effect The present invention, with the above-described configuration, lengthens the time it takes for the refrigerating machine oil to fall to the bottom of the hermetic container along the inner circumferential surface of the hermetic container, thereby improving the heat dissipation of the refrigerating machine oil at the top of the hermetic container. As a result, by lowering the temperature of the refrigerating machine oil that accumulates at the bottom of the sealed container, the internal temperature of the sealed container is lowered, and the specific volume of the suction gas is increased, resulting in increased efficiency and reliability.

EXAMPLE Hereinafter, a hermetic compressor according to an example of the present invention will be described with reference to the drawings.

Fig. 1 is a cross section of a hermetic compressor according to an embodiment of the present invention;
The figure shows a cross section of the closed container.

Note that the same parts as those in the prior art described above are designated by the same numbers and detailed explanations will be omitted.

In FIGS. 1 and 2, 1o is a spiral groove whose central axis is an axis connecting the upper end of the hermetic container 1 and the lower end of the hermetic container 1.

The operation of the hermetic compressor configured as described above will be described below with reference to FIGS. 1 and 2.

The refrigerating machine oil 4 blown onto the inner peripheral surface of the airtight container 1 falls along the spiral groove 1o.

As described above, according to this embodiment, by providing the spiral groove on the inner circumferential surface of the airtight container, the internal temperature of the airtight container can be lowered.
By increasing the specific volume of the suction gas, efficiency and reliability can be increased.

Effects of the Invention As described above, the present invention provides a spiral groove on the inner circumferential surface of the airtight container whose central axis is an axis connecting the upper end of the airtight container and the lower end of the airtight container. By increasing the time it takes for the refrigerating machine oil to fall to the bottom of the sealed container along the surface, improving the heat dissipation of the refrigerating machine oil at the top of the sealed container, and lowering the temperature of the refrigerating machine oil at the bottom of the sealed container. By lowering the internal temperature of the sealed container and increasing the specific volume of the suction gas, efficiency can be increased and performance can be improved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a hermetic compressor according to an embodiment of the present invention, Fig. 2 is a sectional view of a hermetic container according to an embodiment of the invention, and Fig. 3 is a sectional view of a conventional hermetic compressor. be. 1... Airtight container, 2... Compression element, 3
...Electric element, 4... Refrigerating machine oil, 10
・・・・・・Spiral groove. Name of agent: Patent attorney Toshio Nakao and one other person
Sealed 86 m1 figure lo-spiral, calculation figure 2 figure 3

Claims (1)

[Claims] An electric element, a compression element driven by the electric element, and refrigerating machine oil are provided in a closed container, and the spiral shape has a central axis that connects the upper end of the closed container and the lower end of the closed container. A hermetic compressor characterized in that a groove is provided on the inner peripheral surface of the hermetic container.