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a compressor

A compressor and bearing technology, which is applied in the field of compressors, can solve problems such as deterioration of compression performance, incomplete compression of gas, and reduction of air pressure, so as to ensure the noise reduction function and improve the effect of gas compression

Active Publication Date: 2017-10-27
PANASONIC WANBAO GUANGZHOU COMPRESSOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The prior art of this compressor with a resonance chamber only has a single resonance chamber, so it can only reduce the noise of a single frequency; and the communication groove communicates with the cylinder exhaust port, and the space between the communication groove and the resonance chamber forms Clearance volume, when the piston compresses and runs to the exhaust port, the refrigerant gas enters the communication groove and the resonance chamber, causing the gas to not be fully compressed, the air pressure to decrease, and the compression performance to deteriorate

Method used

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Embodiment 1

[0027] The compressor of the present invention includes a casing, a pump body, a motor stator and a motor rotor. see Figure 4 , which is a schematic structural view of the pump body of the compressor according to Embodiment 1 of the present invention. The pump body includes a cylinder 21, a crankshaft, a piston 22, a slide block, a spring, a sound-absorbing cover 20, a first bearing 23, and a second bearing 25. The stator and rotor of the motor are housed inside the closed housing. The stator is sheathed outside the rotor, and the rotor drives the crankshaft to rotate. The crankshaft runs through the second bearing 25, the cylinder 21, the first bearing 23, and the sound-absorbing cover 20 in sequence. The sound-absorbing cover 20 is fixed on one end of the first bearing 23 with bolts, and its interior is hollow to form a sound-absorbing cavity. A first bearing 23 and a second bearing 25 fix the crankshaft in the housing. The end surfaces of the first bearing 23, the cyl...

Embodiment 2

[0033] see Figure 5 , which is a schematic structural view of the pump body of the compressor according to Embodiment 2 of the present invention. Embodiment 2 is basically the same as Embodiment 1, except for the following difference: one of the resonance chambers is coaxial with the communicating hole 232, and the resonance chamber penetrates the cylinder wall in the axial direction, one end communicates with the communicating hole 232, and the other end communicates with the communicating groove 262 connected. The communication groove 262 is arranged at the end surface of the second bearing 25 in contact with the cylinder 21. It can be arranged on the end surface of the second bearing 25 or on the end surface of the cylinder 21. In this embodiment, the communication groove 262 is arranged on The end face of the second bearing 25. The opening directions of the resonance cavities 272 are unified towards the end surface of the second bearing 25 , and are communicated togethe...

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Abstract

A compressor, comprising a sound-absorbing cover, a cylinder, a crankshaft and a first bearing, the crankshaft passing through the sound-absorbing cover, the first bearing and the cylinder in sequence; the sound-absorbing cover is fixed on the first bearing; the first One end surface of the bearing is in close contact with one end surface of the cylinder; the cylinder includes a hollow compression chamber surrounded by the cylinder wall and the cylinder wall, and a resonance chamber is arranged inside the cylinder wall; the sound-absorbing cover includes a hollow sound-absorbing cavity; the first bearing is provided with an exhaust hole, one end of the exhaust hole communicates with the compression chamber of the cylinder, and the other end communicates with the silencer cavity of the sound-absorbing cover; the exhaust hole leads to the One end of the sound-absorbing cavity is also provided with an exhaust valve plate; the first bearing is also provided with a communication hole, one end of the communication hole communicates with the sound-absorbing cavity of the sound-absorbing cover, and the other end communicates with the resonance chamber. The invention provides a compressor which reduces the clearance volume, improves the gas compression effect and ensures the noise reduction function at the same time.

Description

technical field [0001] The invention relates to a refrigeration device, in particular to a compressor. Background technique [0002] In the refrigeration cycle, a compressor is a device that raises low-pressure gas to high-pressure gas. Among them, the working principle of the rotary compressor is that the crankshaft is directly driven by the motor to rotate, and the crankshaft drives the eccentric piston to rotate in the compression chamber of the cylinder, causing the volume of the compression chamber to change, and then compressing the refrigerant gas. [0003] In order to reduce noise, a sound-absorbing cover is often provided in the compressor. The irregular shape of the sound-absorbing cover produces different cross-sectional areas in its hollow sound-absorbing cavity. When the gas passes through the different cross-sections with sudden changes in these areas, the sound waves spread to the sound-absorbing cover in an umbrella shape and then reflect. The reflected soun...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/06
Inventor 潘泽鸿罗艳贞刘杰翁朝阳
Owner PANASONIC WANBAO GUANGZHOU COMPRESSOR