JPH0118871Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hermetic rotary compressor with a built-in accumulator.

As shown in the vertical cross-sectional view of FIG. 1, a conventional hermetic compressor has a motor stator 2 and a compression mechanism 3 built into a hermetic container 1 in close contact with each other, and further includes a hermetic container 1.
There is an accumulator 5 connected to the suction port 4 on the outside of the
has been established.

However, in such a structure, since the motor stator 2 and the compression mechanism 3 are in close contact with the closed container 1, vibration and noise are large, and since the accumulator 5 is provided outside, the external dimensions are large.

The present invention was proposed in view of these circumstances, and aims to provide a hermetic rotor compressor with a built-in accumulator that reduces vibration and noise and is also compact. A cylindrical body into which a piston-type compression mechanism is inserted is coaxially and vibration-proof supported on the inner periphery of the cylindrical sealed container through a plurality of elastic rubber rings fitted on the outer periphery at appropriate intervals, and the cylindrical body is connected to the sealed cylindrical container. The present invention is characterized in that an annular suction cavity is formed between the body and the body, the annular suction cavity having an accumulator function and being partitioned by the plurality of elastic rubber rings and communicating with the suction port of the compression mechanism and the suction port of the sealed container.

An embodiment of the present invention will be explained with reference to the drawings.
FIG. 2 is a longitudinal sectional view thereof.

In the above figure, the same symbols as in FIG. 1 indicate the same members as in FIG. 1, and 6 is a cylindrical body, into which the motor stator 2 and the compression mechanism 3 are fitted.
7, 8, and 9 are an upper rubber ring, a middle rubber ring, and a lower rubber ring that are fitted on the outer periphery of the upper, middle, and lower parts of the cylindrical body 6, respectively, and support the cylindrical body 6 in a vibration-proof manner within the closed container 1; The middle rubber ring 8 is disposed above the suction port 4, and the lower rubber ring 9 is disposed below the suction port 4. 10 is an annular suction cavity formed between the closed container 1 and the cylindrical body 6 by a middle rubber ring 8 and a lower rubber ring 9, and 11 is a suction pipe whose lower end opens into the suction cavity 10.

Note that a plurality of upper rubber rings 7 may be installed, or may not be installed.

According to such a structure, first, the motor stator 2
Since the vibrations generated in the compression mechanism 3 propagate through the rubber ring when propagating to the closed container 1, the vibration-proofing effect is large, and the vibrations of the closed container 1 and surface radiated sound can be reduced.

Next, when the liquid refrigerant and lubricating oil flow in from the suction pipe 11, the liquid refrigerant and lubricating oil temporarily stay in the suction cavity 10, so that the liquid refrigerant and lubricating oil cannot directly flow into the suction port 4. This prevents the compression mechanism 3 from being damaged.

Furthermore, since the suction cavity 10 acts as an accumulator, there is no need to provide an external accumulator, so the overall external size can be reduced.

In short, according to the present invention, a cylindrical body into which a motor stator and a rolling piston type compression mechanism are inserted is connected coaxially to the inner periphery of a cylindrical sealed container via a plurality of elastic rubber rings fitted on the outer periphery at appropriate intervals. an annular suction cavity having an accumulator function, which is partitioned between the closed container and the cylindrical body by the plurality of elastic rubber rings, and communicates with the suction port of the compression mechanism and the suction port of the closed container; By forming this, a compact and quiet hermetic rotary compressor with a built-in accumulator can be obtained, so the present invention is extremely useful industrially.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a known hermetic compressor, and FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention. 1... Airtight container, 2... Motor stator, 3...
Compression mechanism, 4... Suction port, 6... Cylindrical body, 7...
Upper rubber ring, 8... Middle rubber ring, 9...
Lower rubber ring, 10... Suction cavity, 11... Suction pipe.

Claims (1)

[Scope of utility model registration request] A cylindrical body into which a motor stator and a rolling piston type compression mechanism are inserted is coaxially and vibration-proof supported on the inner periphery of a cylindrical closed container via a plurality of elastic rubber rings fitted on the outer periphery at appropriate intervals, and An annular suction cavity partitioned by the plurality of elastic rubber rings and having an accumulator function and communicating with the suction port of the compression mechanism and the suction port of the sealed container is formed between the closed container and the cylindrical body. A hermetic rotary compressor with a built-in accumulator.