AIR CONDITIONER

• US 20070137233A1
• Filed: 12/12/2006
• Published: 06/21/2007
• Est. Priority Date: 12/15/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yamada, Yoshihito, Kanzaki, Hideyuki, Hatano, Koji
• Application Number:
  US11/609,542
• Publication Number:
  US 20070137233A1
• Time in Patent Office: Days
• US Class Current: 62/230
• CPC Class Codes: F25B 2600/0252 with two speeds
• CPC Class Codes: F25B 49/022 Compressor control arrangements

Abstract

An air conditioner of variable capacity type comprises a variable-capacity compressor capable of varying capacity in two levels by switching between FULL and SAVE. The variable-capacity compressor can start operation at SAVE so as to allow the air conditioner to start operation without causing a shutdown of the variable-capacity compressor in an overloaded condition or in a low power-supply voltage environment.

Claims

1. An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a voltage detector, wherein

when a supply voltage is below a predetermined value, the compressor is operated at the power-saving operation.

2. The air conditioner of claim 1, wherein

the compressor is driven by a capacitor start and run single-phase induction motor, and

when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.

3. An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a current detector, wherein

when an operating current exceeds a predetermined value, the compressor is operated at the power-saving operation.

4. The air conditioner of claim 3, wherein

the compressor is driven by a capacitor start and run single-phase induction motor, and

when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.

5. An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a discharge pressure detector for the compressor, wherein

when a discharge pressure exceeds a predetermined value, the compressor is operated at the power-saving operation.

6. The air conditioner of claim 5, wherein

the compressor is driven by a capacitor start and run single-phase induction motor, and

when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.

7. An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation and which is provided with a temperature detector for an outdoor heat exchanger, wherein

when a temperature of the outdoor heat exchanger exceeds a predetermined value, the compressor is operated at the power-saving operation.

8. The air conditioner of claim 7, wherein

the compressor is driven by a capacitor start and run single-phase induction motor, and

when the compressor is operated at the power-saving operation, a plurality of running capacitors are connected to each other to increase a capacitor capacity.

9. An air conditioner of variable capacity type which comprises a compressor capable of varying capacity in two levels by switching between full-power operation and power-saving operation, wherein

the compressor starts operation at the power-saving operation.

10. The air conditioner of claim 9, wherein

the compressor is driven by a capacitor start and run single-phase induction motor, and

the compressor starts operation at the power-saving operation, and at a same time, a plurality of running capacitors are connected to each other to increase a capacitor capacity.