IP Library › Granted Patent US 7,426,837
Granted Patent B2
US 7,426,837 · App. 10/556,818 · Granted Sep 23, 2008

Refrigerator

Assignee: Daikin Industries, Ltd.
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Quick Facts
Patent No.
US 7,426,837
App. No.
10/556,818
Granted
Sep 23, 2008
Kind
B2
Abstract

A refrigerator includes a compressor compressing a refrigerant, a first liquid heat exchanger performing heat exchange between the refrigerant and a first liquid heat medium, an expander expanding the refrigerant, a second liquid heat exchanger performing heat exchange between the refrigerant and a second liquid heat medium, an air heat exchanger performing heat exchange between the refrigerant and air, a blower sending air to the air heat exchanger, a refrigerant flow rate regulator regulating a flow rate of the refrigerant of the first liquid heat exchanger, the second liquid heat exchanger and the air heat exchanger, a pressure sensor detecting a pressure value of the refrigerant of the air heat exchanger, a target pressure value setter setting a target pressure value of the refrigerant of the air heat exchanger in accordance with a target temperature value of the first liquid heat medium, and a blower controller controlling the blower so that the detection value of the pressure sensor becomes the target pressure value.

Claims (26)

1. A refrigerator comprising:

a compressor compressing a refrigerant;

a first liquid heat exchanger performing heat exchange between the refrigerant and a first liquid heat medium;

an expander expanding the refrigerant;

a second liquid heat exchanger performing heat exchange between the refrigerant and a second liquid heat medium;

an air heat exchanger performing heat exchange between the refrigerant and air;

a blower sending air to the air heat exchanger;

a refrigerant flow rate regulator regulating a flow rate of the refrigerant of the first liquid heat exchanger, the second liquid heat exchanger and the air heat exchanger;

a pressure sensor detecting a pressure value of the refrigerant of the air heat exchanger;

a target pressure value setter setting a target pressure value of the refrigerant of the air heat exchanger in accordance with a target temperature value of the first liquid heat medium; and

a blower controller controlling the blower so that the detection value of the pressure sensor becomes the target pressure value.

2. The refrigerator as defined in claim 1 , further comprising:

a temperature sensor detecting a temperature value of the first liquid heat medium subjected to heat exchange with the refrigerant in the first liquid heat exchanger; and

a target pressure value corrector correcting the target pressure value based on the detection value of the temperature sensor.

3. A refrigerator comprising:

a compressor compressing a refrigerant;

a first liquid heat exchanger performing heat exchange between the refrigerant and a first liquid heat medium;

an expander expanding the refrigerant;

a second liquid heat exchanger performing heat exchange between the refrigerant and a second liquid heat medium;

an air heat exchanger performing heat exchange between the refrigerant and air;

a blower sending air to the air heat exchanger;

a refrigerant flow rate regulator regulating a flow rate of the refrigerant of the first liquid heat exchanger, the second liquid heat exchanger and the air heat exchanger;

a pressure sensor for detecting a pressure value of the refrigerant of the air heat exchanger;

a temperature sensor detecting a temperature value of the first liquid heat medium subjected to heat exchange with the refrigerant in the first liquid heat exchanger;

a target pressure value setter setting a target pressure value of the refrigerant of the air heat exchanger in accordance with the detected value of the temperature sensor; and

a blower controller for controlling the blower so that the detection value of the pressure sensor becomes the target pressure value.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 20, 2005
From: HAYASHI, KOJI; KINOKAMI, KENJI; MOMONO, TOSHIYUKI
To: DAIKIN INDUSTRIES, LTD.
Reel/Frame 017135/0564 →
Priority Claims (1)
JP 2003-136941 · May 15, 2003 · national
Continuity (1)
Related Publication 20070051119A1 · Mar 8, 2007