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Compressor and refrigerating cycle apparatus

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Compressor and refrigerating cycle apparatus


In a conventional compressor, since a motor and a mechanical section of the compressor are disposed in one and the same closed container, the motor is exposed to high-temperature coolant and heated, and the efficiency of the motor is lowered. Further, during the operation of the compressor, the coolant circulating in the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered. The compressor according to the present invention includes a compression chamber divided into a closed chamber and an open chamber separated by a magnetic induction plate from each other. The closed chamber is filled with high temperature and pressure coolant and the rotor of the motor is disposed in the closed chamber, and the stator of the motor is disposed in the open chamber.

Browse recent Hitachi Appliances, Inc. patents - Tokyo, JP
Inventors: Baiying HUANG, Hiroyasu YONEYAMA, Kazuo SAKURAI
USPTO Applicaton #: #20120301334 - Class: 417417 (USPTO) - 11/29/12 - Class 417 
Pumps > Motor Driven >Electric Or Magnetic Motor >Reciprocating Rigid Pumping Member >Reciprocating Motor >Unitary Pump And Motor Working Member

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The Patent Description & Claims data below is from USPTO Patent Application 20120301334, Compressor and refrigerating cycle apparatus.

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CROSS REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of Japanese Patent Application No. 2011-118603 filed on May 27, 2011, the disclosure of which is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an axial gap motor and a compressor using the same.

2. Description of the Related Art

In a conventional type compressor having an axial gap motor as disclosed in Japanese Laid-Open Patent Application Publication No. 2007-32429 for example (to be referred to as Patent Document 1 hereinafter), an axial gap motor and a compression mechanism section are disposed in one and the same closed container. The abovementioned axial gap motor is disposed in low-pressure coolant suctioned in a refrigeration cycle. By the rotation of the rotor, the coolant is sent to a stator, and then flown into the compression mechanism section to be compressed.

This configuration has an advantage that a liquid droplet or an oil droplet contained in the coolant is separated, and liquid compression can be avoided effectively.

However, in the abovementioned configuration of the compressor, the motor and the compression mechanism section are disposed in the same closed container. Therefore, the motor is exposed to high-temperature coolant and heated, and the efficiency is lowered. Further, during the operation of the compressor, the coolant circulating during the refrigerating cycle conveys additional heat generated by the motor coil. Thus the efficiency of the refrigerating cycle is lowered.

In light of the above, an objective of the present invention is to provide a highly-efficient compressor and a refrigerating cycle apparatus equipped with the same.

SUMMARY

OF THE INVENTION

The objective of the present invention above is achieved by a compressor including an axial gap motor for driving the compressor, the axial gap motor having a stator and a rotor, the stator having a plurality of small stators each having a small stator core, the small stator core being made of magnetic steel sheet and having a wire wound therearound, the rotor having a magnet facing to the stator, wherein the stator is disposed outside of a closed chamber, the rotor is connected to a mechanical section of the compressor, and the compressor is driven by magnetic induction therebetween.

In addition, the objective of the present invention above is achieved by a high-pressure chamber compressor including a compression chamber, a compression mechanism section including a motor is disposed in the compression chamber, rotation of a rotor of the motor compressing coolant at high temperature and pressure, wherein the high temperature and pressure coolant fills up the compression chamber and is discharged thereafter, the motor is an axial gap motor, the compression chamber further includes a closed chamber and an open chamber separated by a magnetic induction plate, the closed chamber is filled with the high temperature and pressure coolant, and the rotor is disposed in the closed chamber.

According to the present invention, it is possible to provide a highly-efficient and highly-reliable compressor with a simple configuration.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-section outline drawing illustrating a compressor driven by an axial gap motor according to a first embodiment of the present invention;

FIGS. 2A and 2B are a structural outline drawing illustrating a rotor of the axial gap motor according to the first embodiment of the present invention;

FIGS. 3A to 3D are structural outline drawings illustrating cross-sections of a magnetic induction member according to the first embodiment of the present invention;

FIGS. 4A to 4D are outline drawings illustrating a stator of the axial gap motor according to the first embodiment of the present invention;

FIG. 5 is a cross-section outline drawing illustrating a stator of the axial gap motor according to the first embodiment of the present invention;

FIG. 6 is a cross-section outline drawing illustrating a compressor driven by an axial gap motor according to a second embodiment of the present invention;

FIGS. 7A to 7C are structural outline drawings illustrating cross-sections of a magnetic induction member according to the second embodiment of the present invention;

FIG. 8 is a cross-section outline drawing illustrating a compressor driven by an axial gap motor according to a third embodiment of the present invention; and

FIG. 9 is an outline drawing illustrating a refrigerating cycle of an air conditioner according to the fourth embodiment of the present invention.



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stats Patent Info
Application #
US 20120301334 A1
Publish Date
11/29/2012
Document #
13479438
File Date
05/24/2012
USPTO Class
417417
Other USPTO Classes
International Class
04B17/04
Drawings
10



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