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Rotary compressor

A compressor and rotary technology, applied in the direction of rotary piston machinery, rotary piston pumps, mechanical equipment, etc., can solve the problems of high cost, long processing time, and large number of surface treatment processes, etc., to prevent jamming and sintering to improve reliability

Active Publication Date: 2015-06-03
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In addition, in the device in which the wear resistance of the separator is improved by surface treatment of the separator, the number of processing steps for the surface treatment is large, and the processing time is long, resulting in an increase in cost.

Method used

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Embodiment approach 1

[0042] Hereinafter, the rotary compressor according to Embodiment 1 of the present invention will be described in detail. In addition, here, a rotary compressor having two cylinders used in an air conditioner will be described as an example. figure 1 It is a longitudinal sectional view showing the overall structure of the rotary compressor according to Embodiment 1 of the present invention.

[0043] The rotary compressor according to Embodiment 1 of the present invention is, for example, figure 1 As shown, a compression mechanism unit 100 and a motor unit 200 for driving the compression mechanism unit 100 are accommodated in the airtight container 1 , and lubricating oil is stored at the bottom of the airtight container 1 . The motor unit is composed of a stator 2 and a rotor 3, and a crankshaft 4 is fitted into the rotor. The crankshaft 4 has a main shaft portion 4a and a counter shaft portion 4b, and a main shaft side eccentric portion 4c and a counter shaft side eccentric...

Embodiment approach 2

[0074] In a rotary compressor, as described below, the sliding areas of the rollers and vanes are smaller than the sliding areas of the bearings and the diaphragm. Therefore, for the rollers and blades, materials having a hardness higher than those of the bearings and the separators are used. Therefore, in order to reduce the wear of the rollers and vanes, the hardness of the separator heat-treated in the first embodiment must be lower than that of the rollers and vanes. By heat-treating the separator so that the hardness increases in the order of rollers and blades > separator > bearing, abrasion of the rollers and blades can be reduced, and wear of the separator can be reduced.

[0075] Figure 11 a→b→c→d is an explanatory diagram of the operation of the compression mechanism unit of the rotary compressor according to Embodiment 2 of the present invention, and is a diagram showing the state of the compression mechanism unit during one rotation of the upper and lower rollers...

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Abstract

A rotary compressor can reduce abrasion resulted from baffle plate accompanied lubricity deterioration during low-speed operation and abrasion resulted from baffle plate accompanied lubricity deterioration caused by spatial volumetric difference respectively existing on a path where lubricating oil is supplied to a baffle plate and a path where the lubricating oil is supplied to a bearing in a low-cost way, and also can prevent lock and firing of the baffle plate. Heat treatment is performed for the baffle plate (9), so as to enable the baffle plate (9) to have a hardness difference in the way that the hardness of the baffle plate (9) is higher than the hardness of a main bearing (5) and a supplementary bearing (6). In this way, supply quantity of the lubricating oil is small, thereby reducing abrasion resulted from the baffle plate accompanied lubricity deterioration during low-speed operation when the supply of the lubricating oil to the baffle plate is later than the supply of the main and supplementary bearing, reducing abrasion resulted from supply delay of the lubricating oil to the baffle plate caused by the spatial volumetric difference respectively existing on the path where the lubricating oil is supplied to the baffle plate and the path where the lubricating oil is supplied to a bearing, and also preventing lock and firing of the baffle plate.

Description

technical field [0001] The present invention relates to a rotary compressor used in, for example, a refrigeration device, an air conditioner, and a hot water supply device. Background technique [0002] In a rotary compressor, such as a rotary compressor with two cylinders used in an air conditioner, two cylinders are arranged on the upper and lower sides of the partition through upper and lower cylinders, upper and lower rollers, upper and lower bearings, and a partition. cylinders. In addition, eccentric portions of the crankshaft whose phases are shifted by 180 degrees are respectively inserted into the two cylinders, and the upper and lower rollers are fitted into the respective eccentric portions so as to be able to move eccentrically. In addition, vanes that partition the spaces respectively formed between the cylinders and the rollers into compression chambers and suction chambers are slidably inserted into the two cylinders, and these vanes are press-contacted to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C23/00F04C29/00
CPCF04C18/356F04C23/008F04C29/028F04C2210/26F04C2240/40Y10S415/00Y10S417/902
Inventor 五前尚久谷真男新井聪经
Owner MITSUBISHI ELECTRIC CORP