ELECTRIC COMPRESSOR WITH INTEGRAL INVERTER

• US 20100183458A1
• Filed: 02/13/2008
• Published: 07/22/2010
• Est. Priority Date: 02/22/2007
• Status: Active Grant

• Current Assignee: Sanden Corporation (Hisense Home Appliances Group Co., Ltd.)
• Original Assignee: Sanden Corporation (Hisense Home Appliances Group Co., Ltd.)
• Inventors: Osaka, Masahiko, Itabashi, Takaaki, Tsukamoto, Kou
• Granted Patent: US 8,398,377 B2
• Time in Patent Office: Days
• US Class Current: 417/410.500
• CPC Class Codes: F04C 18/0215 where only one member is moving
• CPC Class Codes: F04C 2230/20 essentially without removing material
• CPC Class Codes: F04C 2230/40 Heat treatment
• CPC Class Codes: F04C 2240/30 Casings or housings
• CPC Class Codes: F04C 2240/808 Electronic circuits (e.g. inverters) installed inside the machine
• CPC Class Codes: F04C 23/008 Hermetic pumps

Abstract

An electric compressor provided with an integral inverter, incorporated with a motor and provided in a receiving space surrounded by a compressor housing with a motor drive circuit that includes the inverter. At least some of electric parts including the motor drive circuit are covered by a resin charged into the receiving space, and a part of a region which is in the receiving space and into which the resin can be charged is filled with a light-weight material different from the charged resin. In the structure of the resin covering section for such a motor drive circuit, the amount of resin charged is significantly reduced, and the entire compressor is reduced in weight and cost.

Claims

1. An electric compressor with an integral inverter, incorporated with a motor and provided in a receiving space surrounded by a compressor housing with a motor drive circuit that includes said inverter, characterized in that at least some of electric parts including said motor drive circuit are covered by a resin charged into said receiving space, and a part of a region which is in said receiving space and into which said resin can be charged is filled with a material different from said charged resin.

2. The electric compressor with an integral inverter according to claim 1, wherein said material different from said charged resin is a material whose density or bulk density is lower than that of said charged resin.

3. The electric compressor with an integral inverter according to claim 1, wherein said material different from said charged resin is a preformed resin part.

4. The electric compressor with an integral inverter according to claim 3, wherein said preformed resin part is made of a foamed body.

5. The electric compressor with an integral inverter according to claim 1, wherein said material different from said charged resin is an assembly of synthetic fibers.

6. The electric compressor with an integral inverter according to claim 1, wherein said at least some of electric parts including said motor drive are provided in said receiving space so as to enable heat exchange with refrigerant sucked as fluid to be compressed.

7. The electric compressor with an integral inverter according to claim 1, wherein said resin charging is performed after said material different from said charged resin has been incorporated in said receiving space with said electric parts.

8. The electric compressor with an integral inverter according to claim 1, wherein said resin charging is performed by charging a liquid resin material into said receiving space.

9. The electric compressor with an integral inverter according to claim 1, wherein said resin charging is performed under a residual heat condition after heating of said at least some of electric parts including said motor drive circuit.

10. The electric compressor with an integral inverter according to claim 1, wherein said charged resin is a thermosetting resin.

11. The electric compressor with an integral inverter according to claim 1, wherein said compressor is a compressor used in an air conditioning system for vehicles.