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rotary compressor

A compressor and rotary technology, applied in the direction of rotary piston machines, rotary piston pumps, mechanical equipment, etc., can solve the problems of reduced reliability, damaged working cylinders, etc., to ensure performance and reliability, and realize miniaturization Effect

Active Publication Date: 2011-12-14
HITACHI JOHNSON CONTROLS AIR CONDITIONING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, during operation, due to the gas force generated by the pressure difference between the two surfaces of the vane in the cylinder chamber, the vane tilts from the high-pressure side to the low-pressure side in the vane housing and slides to damage the cylinder, which may cause reduction in reliability

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0031] use Figure 1 to Figure 6 A vertical rotary compressor according to a first embodiment of the present invention will be described. figure 1 It is a longitudinal sectional view of the vertical rotary compressor of this embodiment, figure 2 is in figure 1 A perspective view of the central section of the working cylinder, image 3 yes figure 1 Stereogram of the leaves of Figure 4 is description figure 1 The top view of the sliding state of the blades of the vertical rotary compressor, Figure 5 It is a graph showing the change of the amount of wear with respect to the change in the ratio of the blade clearance dimension and the length dimension of the sliding surface of the blade in the maximum protruding state of the present embodiment, Figure 6 It is a graph showing the change of the amount of wear with respect to the change of the ratio of the height of the T portion and the height of the cylinder in the present embodiment. The rotary compressor of this embodi...

no. 2 Embodiment approach

[0051] Next, use Figure 7 A rotary compressor according to a second embodiment of the present invention will be described. Figure 7 It is a partial cross-sectional view showing a cylinder of a rotary compressor according to a second embodiment of the present invention. This second embodiment is different from the first embodiment in the points described next, and is basically the same as the first embodiment in other points, so redundant descriptions will be omitted.

[0052] In the second embodiment, the bottom portion provided on the front end side of the spring insertion hole 51c of the cylinder 51 is composed of an outer peripheral portion 51c1 to which the end portion of the spring 56 is assembled and a central portion 51c2 protruding inwardly from the end portion of the spring 56. . According to this second embodiment, in addition to improving the sealing performance, there is also an effect of increasing the contact area between the vane 55 and the cylinder 51, and ...

no. 3 Embodiment approach

[0054] Next, use Figure 8 A rotary compressor according to a third embodiment of the present invention will be described. Figure 8 It is a perspective view which shows the blade of the rotary compressor concerning 3rd Embodiment of this invention. This third embodiment is different from the first embodiment in the points described next, and is basically the same as the first embodiment in other points, so redundant descriptions will be omitted.

[0055] In this third embodiment, a tapered inclined surface is provided at the end portion of the vane 55 on the side opposite to the compression chamber of the sliding surface that slides with the cylinder 51 . As a result, even when the vane 55 slides inside the vane housing portion 51b in an inclined state, an increase in the surface pressure of the vane sliding portion can be suppressed, and a sliding method close to surface contact can be realized. In addition, even if the angle of the tapered shape is small, it is effective,...

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PUM

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Abstract

PURPOSE: A rotary compressor is provided to achieve performance and reliability and seek miniaturization. CONSTITUTION: A rotary compressor(1) comprises a motor(3), a crank shaft(4), and a compression unit(5). The compression unit comprises a cylinder(51), a roller(52), blocking members(53,54), vane(55), and a spring(56). The cylinder comprises a cylinder room, a vane receiving part(51b), and a spring inserting hole(51c). The roller is arranged in the cylinder room and is rotated by the eccentric portion of the crank shaft. The blocking members block the cylinder room. The vane is moved according to the eccentric motion of the roller. The spring is arranged at the spring inserting hole and presses the vane to the roller. The bottom of the spring inserting hole corresponding to the part which faces the tip of the spring is substantially deepest.

Description

technical field [0001] The present invention relates to a rotary compressor, and is particularly suitable for a rotary compressor provided with a spring pressing a vane in a spring insertion hole of a cylinder. Background technique [0002] As a conventional rotary compressor, the technique disclosed in Unexamined-Japanese-Patent No. 2003-278679 (patent document 1) is known. [0003] This rotary compressor has the following structures in an airtight container: an electric motor; a crankshaft driven by the electric motor and having an eccentric portion; and a compression mechanism portion driven by the eccentric portion. The compression mechanism includes a cylinder, a roller, a closing member, vanes, and a spring. [0004] Further, the cylinder of the compression mechanism unit has a cylinder chamber provided at the center, a vane housing portion extending radially outward from the cylinder chamber, and a spring insertion hole extending radially inward from the outer periph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/356
CPCF04C18/344F04C18/356F04C23/008F04C2210/26F04C2240/40F16F1/04Y10S415/00Y10S417/902
Inventor 寺井利行岸康弘土屋直洋
Owner HITACHI JOHNSON CONTROLS AIR CONDITIONING INC