Cooling apparatus, light source apparatus including cooling apparatus, and projection-type image display apparatus including light source apparatus

Patent metadata

Field	Value
Publication number	US-10041664-B2
Application number	US-201415309240-A
Country	US
Kind code	B2
Filing date	Jun 6, 2014
Priority date	Jun 6, 2014
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

A cooling apparatus includes: a refrigerant circuit in which a compressor, a condenser, an expansion valve and an evaporator are circularly connected sequentially, via a pipe, and a refrigerant circulates; and a heater provided to the refrigerant circuit, in which the evaporator is thermally connected to an exothermic element.

First claim

The invention claimed is:

1. An electronic apparatus comprising:
a cooling apparatus comprising
a refrigerant circuit in which a compressor, a condenser, an expansion valve and an evaporator are circularly connected sequentially, via a pipe, and refrigerant circulates, and
a heater provided to the refrigerant circuit; and

a controller configured to control at least the heater of the cooling apparatus,
the evaporator being thermally connected to an exothermic element,
the heater comprising heaters provided between the evaporator and a suction side of the compressor, and between the evaporator and the expansion valve, respectively,
the controller being configured to
control the heater to keep a temperature of the evaporator to be higher than a dew point,
control the heater provided between the evaporator and the expansion valve, to adjust a quality of refrigerant in a two-phase state, and
control the heater provided between the evaporator and the suction side of the compressor, to turn refrigerant to be sucked into the compressor into the vapor state.

2. The electronic apparatus of claim 1 , wherein
the evaporator comprises a segment of the pipe, the segment being positioned between the compressor and the expansion valve.

3. The electronic apparatus of claim 1 , wherein
the exothermic element comprises a laser light source module,
the evaporator comprises a heat block serving as a radiator, and
a segment of the pipe between the compressor and the expansion valve is thermally connected to the laser light source module via the heat block.

4. A projection-type image display apparatus, comprising the electronic apparatus of claim 1 .

5. The electronic apparatus of claim 3 , wherein
the controller is configured to activate the compressor after activating the heater, and to activate the laser light source module after activating the compressor.

6. The electronic apparatus of claim 3 , wherein
the laser light source module comprises a green laser light source module configured to emit green laser light, and a unit laser light source module configured to emit laser light of another color, and
the green laser light source module is provided on an upstream side of the unit laser light source module.

7. The electronic apparatus of claim 3 , wherein
the laser light source module comprises a green laser light source module configured to emit green laser light, and a unit laser light source module configured to emit laser light of another color,
the unit laser light source module comprises at least two unit laser light source modules, and
the green laser light source module is provided on an upstream side of at least one of the at least two unit laser light source modules.

Assignees

• Mitsubishi Electric Corp

Inventors

• Ito Daisuke
• Okazaki Takashi

Classifications

• F25D21/08

  by electric heating · CPC title

• F21V29/90

  Heating arrangements · CPC title

• G03B21/16

  Cooling; Preventing overheating · CPC title

• F21V29/503

  of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) · CPC title

• F25B1/00

  Compression machines, plants or systems with non-reversible cycle (F25B3/00, F25B5/00, F25B6/00, F25B7/00, F25B9/00 take precedence) · CPC title