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Closed electric compressor

An electric compressor, airtight technology, applied in the direction of machines/engines, mechanical equipment, liquid variable capacity machinery, etc., can solve problems such as noise

Inactive Publication Date: 2006-07-26
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this state is repeated continuously, there is a problem that the inner peripheral surface of the stopper 100 contacts while rotating, thereby generating noise.

Method used

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  • Closed electric compressor
  • Closed electric compressor
  • Closed electric compressor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as figure 1 As shown, inside the airtight container 101 there are: a compression element 103 elastically supported by a spring 102 , and an electric element 104 fixed on the upper side of the compression element 103 and driving it.

[0022] The compression element 103 has a compression chamber 109 and a piston 108 reciprocating in the compression chamber 109 .

[0023] Furthermore, the substantially cup-shaped stopper 106 is fixed on the upper inner side of the airtight container 101 . The stopper 106 is fitted to the upper end of the crankshaft 105 constituting the compression element 103 with a gap of about 2 to 10 mm. Such as figure 2 As shown, a protrusion 106A protruding from the inner peripheral surface side of the stopper 106 is formed. The stopper 106 is subjected to deep drawing so that the protrusion 106A protrudes from the inner surface. Furthermore, the protruding portion 106A is formed in a vertically transverse groove shape, and further, the tip...

Embodiment 2

[0027] use figure 1 and Figure 4 , Embodiment 2 will be described.

[0028] The compression element 103 is elastically supported by the spring 102 provided on the support portions 110A, 110B, 110C, 110D, and the like. Figure 4 The demarcation line A-A' shown indicates the direction of reciprocating motion of the piston. In addition, the dividing line B-B' represents the respective approximate center lines between the supporting parts 110A and 110B and between 110C and 110D. Furthermore, the dividing line C-C' indicates a line passing through the approximate center axis of the crankshaft 105 and the stopper 106 and perpendicular to the dividing line A-A'. In this embodiment, for the compressor of Embodiment 1, such as image 3 and Figure 4 Protrusion 106A is shown. The protrusion 106A is disposed in a substantially perpendicular direction with respect to the reciprocating direction of the piston 108 shown by the dividing line A-A'.

[0029] As mentioned above, the co...

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PUM

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Abstract

Contact noise occurring continuously in a hermetic electrically driven compressor is reduced. A stopper 106 has a protrusion 106A projecting along the vertical direction at the inner circumferential side formed by draw forming. If vibration or impact is applied to a electrically driven compressor body 107 from outside during operation of the electrically driven compressor body 107, the upper end portion of a crankshaft 105 prevents continuous rotary motion along the inner circumferential side of the stopper 106. As a result, occurrence of noise can be reduced.

Description

technical field [0001] The present invention relates to a hermetic electric compressor used in refrigerators, freezers, air conditioners, dehumidifiers, and the like. Background technique [0002] A conventional hermetic electric compressor includes an airtight container, and an electric element and a compression element arranged inside the airtight container. Such conventional hermetic electric compressors (hereinafter, referred to as compressors) are disclosed in JP-A-11-303740 and US Patent No. 5,118,263. [0003] Next, a conventional compressor will be described with reference to the drawings. [0004] Figure 5 It shows that the compressor 10 and the airtight container 20 are formed by butting the edges of the opening ends of the upper casing 30A and the lower casing 20B which are divided into two parts up and down, and joining them by welding or the like. [0005] The electric compressor main body 30 is elastically supported by a plurality of elastic supporting devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B39/00F04B39/12
CPCF04B39/121F04B39/0027F04B39/00
Inventor 大野武横田和宏尾坂昌彦
Owner PANASONIC CORP