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rotary compressor

A rotary compressor and compressor technology, applied in the direction of rotary piston machinery, rotary piston pump, rotary piston/swing piston pump components, etc., can solve the problem of increased noise

Active Publication Date: 2019-08-27
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the pressure pulsation is amplified, and as a result, there is a problem that the noise will increase

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 It is a vertical sectional view showing an embodiment of the rotary compressor of the present invention. figure 2 It is the cross-sectional view seen from below of the 1st compression part and the 2nd compression part of an Example.

[0051] Such as figure 1 As shown, the rotary compressor 1 includes: a compression unit 12 disposed at the lower portion of a closed vertical cylindrical compressor housing 10; electric motor 11.

[0052] The stator 111 of the electric motor 11 is formed in a cylindrical shape, and is fixed to the inner peripheral surface of the compressor housing 10 by shrink fitting. The rotor 112 of the electric motor 11 is arranged inside the cylindrical stator 111 , and is fixed to the rotary shaft 15 that mechanically connects the electric motor 11 and the compression unit 12 by shrink fit.

[0053] The compression unit 12 includes a first compression unit 12S and a second compression unit 12T, and the second compression unit 12T is arra...

Embodiment 2

[0088] Image 6 It is the plan view which looked at the upper end plate cover of Example 2 from below. Such as Image 6 As shown, the upper end plate cover 170T2 of the second embodiment is formed into a circular shape by press-forming a steel plate when viewed in plan, and also has a concave portion 171T2 that becomes the outer contour of the upper muffler chamber 180T2. Five bolt holes 173T2 through which the through bolts 175 pass are arranged in the flat plate portion 172T2 constituting the outer edge portion of the upper end plate cover 170T2. The upper end plate cover 170T2, the upper end plate 160T, and the second cylinder 121T are fastened with five through bolts 175 .

[0089] The upper end plate cover 170T2 of the second embodiment covers the second discharge valve portion 200TV of the upper end plate 160T and the upper end of the refrigerant passage hole 136 (see Figure 4 ), an upper muffler chamber 180T2 is formed between it and the upper end plate 160T. The u...

Embodiment 3

[0100] Figure 7 It is a perspective view of the upper end plate cover of the third embodiment. Figure 8 It is an exploded perspective view showing the upper end plate cover of the third embodiment. Figure 9 It is a plan view of the upper end plate cover of Example 3 viewed from above. Figure 10 It is a plan view of the positional relationship between the noise reduction discharge hole, the second discharge hole, and the refrigerant passage hole of the upper end plate cover of Example 3 viewed from below the upper end plate cover.

[0101] Such as Figure 7 and Figure 8 As shown, the rotary compressor of Embodiment 3 includes an upper end plate 160T3 that closes the upper side of the second cylinder 121T, and an upper end plate cover 170T3 that forms an upper muffler chamber 180T3 between the upper end plate 160T3 and the upper end plate 160T3. In addition, the rotary compressor of Embodiment 3 includes a second discharge hole 190T provided on the upper end plate 160T3...

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PUM

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Abstract

In the present invention, on a plane perpendicular to the rotation shaft, the upper muffler chamber has: a plurality of protrusions protruding from the center of the rotation shaft toward the through-bolts; a plurality of small-diameter parts connecting the protrusions, In addition, it is spaced apart from the through bolt and formed on the center side of the rotation axis than the through bolt, and a sound-absorbing discharge hole is provided in each protrusion. Inside one of the plurality of protrusions, the second discharge hole and the refrigerant passage hole of the upper end plate are arranged. big.

Description

[0001] References for related applications [0002] This application enjoys the benefits of the priority of Japanese patent application No. 2015-179641 filed on September 11, 2015, and Japanese patent application No. 2016-137898 filed on July 12, 2016. All of the Japanese patent applications The contents are cited in this application. technical field [0003] The present invention relates to a rotary compressor used in air conditioners, refrigerators, and the like. Background technique [0004] In order to suppress the noise accompanying the discharge of the refrigerant, for example, there is known a sound-absorbing member in which two sound-absorbing discharge holes provided in the sound-absorbing member (end plate cover) are arranged in a symmetrical sound source with respect to the space outside the sound-absorbing, and become primary. The position of the node of the resonance mode is shifted from the position of the antinode of the secondary resonance mode by making the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/06F04C18/356
CPCF04C18/3562F04C29/06F04C29/065F04C23/001F04C23/008F04C29/068F04C18/3564F04C2270/14F04C29/0057F04C29/0085F04C29/066F04C29/12F04C2210/26F04C2240/20F04C2240/10F04C2240/40F04C2250/102
Inventor 片山大辉森下卓古川基信两角尚哉
Owner FUJITSU GENERAL LTD