Compressor and air conditioner

Patent metadata

Field	Value
Publication number	US-12040680-B2
Application number	US-201917612287-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Jun 13, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A compressor includes a motor including three-phase coils having 6N terminals (where N is an integer), a compression mechanism configured to be driven by the motor, a closed container in which the motor and the compression mechanism are housed, a terminal portion electrically connected to the 6N terminals of the coils and protruding outside the closed container, a conductor portion attached to at least a part of the terminal portion to thereby fix a connection state of the coils, and an insulating body covering at least the conductor portion.

First claim

What is claimed is:

1. A compressor comprising:
a motor comprising three-phase coils having 6N terminals (where N is an integer);
a compression mechanism driven by the motor;
a closed container in which the motor and the compression mechanism are housed;
a terminal portion electrically connected to the 6N terminals of the coils and protruding outside the closed container;
a conductor portion attached to at least a part of the terminal portion to thereby fix a connection state of the coils; and
an insulating body covering the conductor portion on an outer side of the closed container,
wherein the insulating body has holes into which conductors of at least a part of the terminal portion are fitted, and
wherein the conductor portion electrically connects the conductors in the holes to each other to fix a connecting state of the coils.

2. The compressor according to claim 1 , wherein the conductor portion electrically connects at least three terminals of the 6N terminals of the coils to one another.

3. The compressor according to claim 1 , further comprising a connection terminal portion electrically connected to at least three terminals of the 6N terminals of the coils,
wherein the connection terminal portion is connected to an inverter.

4. The compressor according to claim 1 , wherein the terminal portion comprises:
a base member fixed to a wall portion of the closed container,
wherein the conductors comprise pins which are attached to the base member and extend from inside to outside of the closed container.

5. The compressor according to claim 1 , wherein the conductor portion fixes the connection state of the coils to a Y connection.

6. The compressor according to claim 1 , wherein the conductor portion fixes the connection state of the coils to a delta connection.

7. The compressor according to claim 1 , wherein the coils comprise two or more coil elements of each phase, and
wherein the two or more coil elements are connected in series in the motor.

8. The compressor according to claim 1 , wherein the coils comprise two or more coil elements of each phase, and
wherein the two or more coil elements are connected in parallel in the motor.

9. The compressor according to claim 1 , wherein the coils comprise two or more coil elements of each phase,
wherein the two or more coil elements are not connected to each other in the motor, and
wherein the conductor portion fixes a connection state of the two or more coil elements to a serial connection.

10. The compressor according to claim 1 , wherein the coils comprise two or more coil elements of each phase,
wherein the two or more coil elements are not connected to each other in the motor, and
wherein the conductor portion fixes a connection state of the two or more coil elements to a parallel connection.

11. The compressor according to claim 1 , wherein the terminal portion is attached to an upper surface portion of the closed container.

12. The compressor according to claim 1 , further comprising:
6N lead wires connected to the 6N terminals of the coils; and
a socket connecting the 6N lead wires and the terminal portion to each other.

13. The compressor according to claim 1 , wherein the motor comprises:
a stator having the coils and a stator core on which the coils are wound, and
a rotor having a permanent magnet and a rotor core to which the permanent magnet is attached.

14. The compressor according to claim 13 , wherein the coils are wound on the stator core by concentrated winding.

15. An air conditioner comprising:
the compressor according to any one of claim 1 ;
a condenser to condense a refrigerant sent out from the compressor;
a decompressor to decompress the refrigerant condensed by the condenser; and
an evaporator to evaporate the refrigerant decompressed by the decompressor.

16. The compressor according to claim 1 , wherein the conductor portion is provided in a substrate formed of an insulating material.

Assignees

• Mitsubishi Electric Corp

Inventors

• Nigo Masahiro

Classifications

• H02K5/08

  Insulating casings · CPC title

• F04C2240/808

  Electronic circuits (e.g. inverters) installed inside the machine · CPC title

• F04C2240/803

  Electric connectors or cables; Fittings therefor · CPC title

• F04C2240/403

  with inverter for speed control · CPC title

• F04C29/0085

  Prime movers · CPC title