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scroll compressor

A scroll compressor and compression mechanism technology, applied in the direction of rotary piston machinery, rotary piston pump, mechanical equipment, etc., can solve the problems of reduced circulation efficiency, reduced bearing reliability, increased oil volume, etc., to improve the circulation Efficiency and reliability improvement

Active Publication Date: 2017-08-08
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, there is a problem that the reliability of the bearing decreases due to the outflow of the refrigerator oil from the airtight container, which in turn increases the amount of oil in the refrigeration circuit and reduces the cycle efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0021] figure 1 It is a longitudinal sectional view of scroll compressor 100 according to Embodiment 1 of the present invention, figure 2 yes figure 1 An enlarged view of the main part.

[0022] The scroll compressor 100 according to Embodiment 1 of the present invention includes, inside a hermetic dome-shaped airtight container 10 , a compression mechanism section 14 composed of a fixed scroll 1 and an orbiting scroll 2 , and compresses the refrigerant. Compression is performed; the motor 5 is composed of a motor rotor 5 a and a motor stator 5 b, and drives the compression mechanism part 14 connected via the main shaft 6 .

[0023] The fixed scroll 1 is composed of a base portion 1a and a plate-shaped wrap 1b, and its outer peripheral portion is fastened to the guide frame 4 by bolts (not shown). On one side of the deck part 1a ( figure 1 (Center is the lower side) is provided with a plate-shaped scroll 1b, and at the same time, two crosshead guide grooves 1c are formed ...

Embodiment approach 2

[0045] Next, a scroll compressor according to Embodiment 2 will be described. In Embodiment 2, in the scroll compressor, the liquid surface of the refrigerator oil is sealed at a position above the lower end of the motor stator coil 5c wound around the motor stator 5b.

[0046] In addition, the description of the configuration and operation common to Embodiment 1 will be omitted below.

[0047] When the scroll compressor is mounted on an air conditioner or refrigerator with a large refrigeration circuit, in order to ensure the reliability of the scroll compressor, the refrigerant enclosed in the The refrigerating machine oil of the scroll compressor increases, and the liquid level of the refrigerating machine oil is sealed to a position higher than the lower end of the electric motor 5 .

[0048] As described above, even when the liquid level of the refrigerating machine oil is sealed at a position higher than the lower end of the motor 5, since the lower balance weight 15b i...

Embodiment approach 3

[0050] Next, a scroll compressor according to Embodiment 3 will be described. In Embodiment 3, in the scroll compressor, the fixed cup 18 has a structure formed of two members.

[0051] In addition, descriptions of configurations and operations common to Embodiment 1 or Embodiment 2 are omitted below.

[0052] Figure 5 It is a vertical sectional view of the fixed cup 18 according to Embodiment 3 of the present invention.

[0053] Such as Figure 5 As shown, the fixed cup 18 is composed of a base part 18b and a cup part 18a, and the cup part 18a is engaged with the base part 18b through its joint part 18c, wherein the above-mentioned base part 18b is used for fixing to the subframe 8. The cup-shaped part 18a surrounds the lower balance weight 15b.

[0054] As described above, since the fixing cup 18 is formed of two parts, the base member 18b and the cup member 18a, the base member 18b can have a thickness to maintain the fixing strength. In addition, in order to reduce mate...

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PUM

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Abstract

The scroll compressor of the present invention includes: an airtight container in which refrigerating machine oil is stored at the bottom; a compression mechanism that compresses the refrigerant sucked into the airtight container; and a motor that is composed of a motor rotor and a motor stator. And drives the compression mechanism part connected via the shaft; the sub frame, which is fixed to the airtight container, and supports the shaft from the lower side of the motor so as to be rotatable; the balance weight, which is installed on the lower end surface of the motor rotor; and the fixed cup The component is arranged on the upper end of the sub-frame and surrounds the balance weight.

Description

technical field [0001] The present invention relates to a scroll compressor that suppresses the amount of refrigerating machine oil flowing out of an airtight container. Background technique [0002] Conventionally, in a scroll compressor that compresses refrigerant introduced into an airtight container using a compression mechanism driven by a motor unit, there is a scroll compressor that suppresses the amount of refrigerating machine oil flowing out of the airtight container. machine (for example, refer to Patent Documents 1 and 2). [0003] In the scroll compressor disclosed in Patent Document 1, a compression unit 2 is incorporated in the lower portion of a vertical airtight housing 1 , and a motor 3 having a drive shaft 4 is incorporated in the upper portion of the compression unit 2 . A bearing 15 of the drive shaft 4 is provided on the upper portion of the motor, and an oil supply pump 8 is provided on the lower portion of the drive shaft 4 . A forced oil supply pas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04C29/00F04C18/02
CPCF04C18/0215F04C29/0021F04C23/008F04C29/026F04C2240/807F04C18/00F04C18/02F04C18/04F04C18/18F04C29/00F04C29/0007F04C29/02F04C29/04
Inventor 长岗文一茗原将史三坂令并木谦
Owner MITSUBISHI ELECTRIC CORP