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Scroll compressor

A scroll compressor and compression chamber technology, applied in the field of scroll compressors, can solve the problems of enlarged axial clearance, increased internal leakage, low efficiency, etc., and achieves high efficiency.

Inactive Publication Date: 2014-05-14
HITACHI APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the prior art described above, when the axial clearance is preset, the axial clearance during actual operation can be narrowed under the target operating conditions, but under other operating conditions, the axial clearance Problems of enlargement, increased internal leakage, inefficiency

Method used

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Embodiment approach 1

[0067] according to Figure 1 to Figure 9 The first embodiment of the present invention will be described. It should be noted that, the above embodiment is a case where the diameter of the compressor is about 10 mm to 1000 mm. In addition, in Figure 11 The relationship between the force, pull-off force and adsorption force to be described is shown in .

[0068] Such as figure 1 As shown, the orbiting motion of the orbiting scroll member 3 is achieved by installing the orbiting bearing 23 fixedly arranged on the orbiting scroll member 3 to the eccentric shaft hub portion 6a at the upper end of the rotating shaft 6, and using the motor 7 described later to make it Rotational axis 6 turns and realizes. Here, the orbiting scroll member 3 is prevented from rotating by the Oldham ring 5 provided between the orbiting scroll member 3 and the stationary frame 4 .

[0069] The rotating shaft 6 is supported by a main bearing 24 provided integrally with the frame 4 and a sub bearin...

Embodiment approach 2

[0159] Next, use Figure 10 (a) The enlarged view of the longitudinal section of the outer edge of the mirror plate and Figure 10 The bottom perspective view of the orbiting scroll member of (b) shows the scroll compressor of 2nd Embodiment of this invention.

[0160] This second embodiment is the same as the first embodiment except that the back side of the turning outer edge portion 3e is integrated with the rolled mirror plate 3a1. According to this distinction, the outer circumference of the back mirror plate 3a2 is pressed into the inner circumference of the outer back portion 3ae of the rolled mirror plate 3a1, shrink-fitted or shrink-fitted to fix the two, thereby reducing the processing cost.

[0161] Here, one screw 3r is used as a rotation stopper to prevent rotation of the back mirror plate 3a2, but the rotation stopper may not be provided as long as the interference fitting amount can be ensured. Although by reducing the thickness of the back mirror plate 3a2, i...

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PUM

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Abstract

PROBLEM TO BE SOLVED: To solve the problem with a conventional scroll compressor, wherein as an operating pressure condition is extended in the range, an operating condition occurs such that an axial gap between a revolving scroll member and a fixed roll is increased, and thus the performance is degraded. SOLUTION: By providing a space inside an end plate of the revolving scroll member to introduce intermediate pressure between suction pressure and back pressure, deformation amount change of a revolving end plate under wide pressure conditions is suppressed, and performance improvement of a scroll compressor under a wide range of conditions can be achieved.

Description

technical field [0001] The present invention relates to a scroll compressor, and more particularly to a scroll compressor capable of achieving high efficiency by reducing leakage loss under a wide range of operating conditions. Background technique [0002] Scroll compressors are widely used as compressors for refrigeration cycles of air conditioners and heat pump water heaters that are required to save energy. Since air conditioners and heat pump water heaters operate throughout the year, the scroll compressors mounted on them are required to have high performance under a wide range of operating conditions. [0003] In a scroll compressor, a compression chamber is formed by meshing two scroll members vertically arranged in a scroll shape on a mirror plate, and the volume of the compression chamber is changed by fixing one and orbiting the other. In order to achieve high efficiency, it is necessary to keep the axial gap, which is the main sealing portion of the compression ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C18/02
Inventor 坪野勇向井有吾大沼敦石山明彦津久井和则
Owner HITACHI APPLIANCES INC