JP2008002364A - Multicylinder compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low noise multicylinder compressor, by further reducing noise, since a variable range of an operation frequency becomes wide in recent years. <P>SOLUTION: This multicylinder compressor has a compression part composed of a plurality of cylinders different in a phase of a compression space for respectively delivering to a main bearing side muffler chamber 2 and a sub-bearing side muffler chamber 3. The noise can be further reduced by arranging a muffling chamber 12 for expanding the passage area in an intermediate partition plate 6 of a gas passage, by communicating the main bearing side muffler chamber 2 with the sub-bearing side muffle chamber 3 by a gas passage. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a multi-cylinder compressor used in refrigeration cycle application equipment and the like, and more particularly to a compressor designed to reduce noise.

Conventionally, this type of compressor is a multi-cylinder compressor provided with a compression mechanism composed of a plurality of cylinders whose phases of the compression chambers for discharging gas to the main bearing side muffler chamber and the sub bearing side muffler chamber are 180 degrees different from each other. The main bearing side muffler chamber and the auxiliary bearing side muffler chamber are configured to communicate with each other through a gas passage (see, for example, Patent Document 1).
JP 7-247974 A

  In the prior art, the gas discharged from the plurality of compression chambers is discharged into the main bearing side muffler chamber and the sub bearing side muffler chamber, and is discharged into the compressor hermetic container through the muffler chamber. Noise in the muffler chamber due to pulsation is reduced.

  In recent years, further reduction in noise has been demanded due to the increase in the variable range of the operating frequency and housing conditions.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a multi-cylinder compressor that further reduces noise.

  In order to solve the above-described conventional problems, a compressor according to the present invention includes a compression unit configured by a plurality of cylinders whose phases of the compression chambers discharged to the main bearing side muffler chamber and the sub bearing side muffler chamber differ from each other by 180 degrees. In the multi-cylinder compressor provided, the main bearing side muffler chamber and the auxiliary bearing side muffler chamber communicate with each other through a gas passage, and a sound deadening chamber in which a passage area is enlarged is provided in an intermediate partition plate in the gas passage. . Thereby, the noise of the pulsating gas can be further reduced.

  As described above, the compressor of the present invention can reduce noise due to pulsation and provide a low noise compressor.

  According to a first aspect of the present invention, an electric motor section and a compressor section are housed in a sealed container, and the compressor section includes a plurality of cylindrical cylinders, intermediate partition plates that partition the cylinders, and both end surfaces of the plurality of cylindrical cylinders. The main bearing and the sub-bearing that constitute the compression chamber, the roller that revolves in the compression chamber, the shaft that is coupled to the electric motor that imparts the revolving motion to the roller, and the noise caused by the pulsation of the gas discharged from the compressor section In a sealed multi-cylinder compressor having a main bearing side muffler chamber and a sub-bearing side muffler chamber and vanes that further divide the cylindrical inner peripheral surfaces of the plurality of cylinders into a plurality of sealed spaces as components, The main bearing side muffler chamber and the sub bearing side muffler chamber are connected by a gas passage, and a noise reduction chamber having an enlarged passage area is provided in an intermediate partition plate in the gas passage to further reduce noise due to pulsation. It can be achieved.

(Embodiment 1)
1, 2, and 3 show a compression mechanism portion of a compressor according to the first embodiment of the present invention.

  In FIG. 1, the same reference numerals are used for the same mechanism elements as in FIGS.

  In FIG. 1, the compression mechanism is composed of a main bearing side muffler chamber 2, a main bearing 4, an upper cylinder 5, an intermediate partition plate 6, a lower cylinder 7, a sub bearing 8, and a sub bearing side muffler chamber 3. 9 is a shaft that transmits power to the compression mechanism, 10 is a rolling piston that performs rotational compression, and 11 is a vane that partitions the cylinder space into a low pressure chamber and a high pressure chamber. Reference numeral 12 denotes a sound deadening chamber provided in the intermediate partition plate 6 and is connected to a gas passage 15 communicating the main bearing side muffler chamber 2 and the sub bearing side muffler chamber 3.

  These compression mechanisms are hermetically sealed by the hermetic container 1.

  As a result, the gas discharged from the compression chamber passes through the sub-bearing side muffler chamber 3 and the gas passage 15, passes through the muffler chamber 12 in the intermediate partition plate 6, and reaches the main bearing side muffler chamber 2, thereby causing further pulsation. Noise can be reduced.

  As described above, since the compressor according to the present invention can be operated with low noise, the compressor can be applied not only to a refrigeration air conditioner but also to an indoor use such as a dehumidifier.

Sectional drawing of the multicylinder compressor in Embodiment 1 of this invention The expanded sectional view of the compression mechanism part of the multicylinder compressor in Embodiment 1 of the present invention. The figure which shows the intermediate partition plate in Embodiment 1 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sealed container 2 Main bearing side muffler chamber 3 Sub bearing side muffler chamber 4 Main bearing 5 Upper cylinder 6 Intermediate partition plate 7 Lower cylinder 8 Sub bearing 9 Shaft 10 Roller 11 Vane 12 Silent chamber 13 Stator 14 Rotor 15 Gas passage

Claims (1)

An electric motor part and a compressor part are accommodated in a sealed container, and the compressor part is disposed on a plurality of cylindrical cylinders, an intermediate partition plate for partitioning the plurality of cylinders, and both end faces of the plurality of cylindrical cylinders. A sealed multi-cylinder compressor having a main bearing and a sub-bearing constituting a compression chamber, and a main bearing-side muffler chamber and a sub-bearing side muffler chamber for reducing noise caused by pulsation of gas discharged from the compressor section. , The main bearing side muffler chamber and the auxiliary bearing side muffler chamber communicate with each other through a gas passage passing through an intermediate partition plate, and the gas passage has a silencer chamber whose passage area is enlarged in the intermediate partition plate portion. Machine.

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