Refrigerating apparatus
First Claim
1. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil, the refrigerator further comprising:
- a liquid injection piping connecting downstream of said condenser to said scroll compressor, expansion equipment provided in said liquid injection piping, an electromagnetic valve provided upstream of said expansion equipment in said liquid injection piping, and a strainer provided upstream of said electromagnetic valve.
1 Assignment
0 Petitions
Accused Products
Abstract
A liquid injection type scroll compressor is used to a refrigerating apparatus using hydrocarbon fluoride refrigerant which does not contain chlorine (HFC-125/HFC-143a/HFC-134a) as an operating fluid and an amount of an injected liquid is controlled according to a discharge temperature of the compressor. Further, ester oil and/or ether oil is used as refrigerator oil and a dryer is disposed in a refrigerating cycle. With this arrangement, a refrigerating cycle operation can be stably realized in a wide range without almost changing the arrangement of a conventional refrigerating apparatus.
25 Citations
10 Claims
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1. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil, the refrigerator further comprising:
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a liquid injection piping connecting downstream of said condenser to said scroll compressor, expansion equipment provided in said liquid injection piping, an electromagnetic valve provided upstream of said expansion equipment in said liquid injection piping, and a strainer provided upstream of said electromagnetic valve.
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2. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil, the refrigerator further comprising:
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piping connecting downstream of said condenser to said scroll compressor, said piping including an electromagnetic valve and a capillary provided downstream of said electromagnetic valve, and a strainer provided upstream of said electromagnetic valve.
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3. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil, the refrigerator further comprising:
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piping connecting downstream of said condenser to said scroll compressor, said piping including an electromagnetic valve and expansion equipment, and a strainer provided upstream of said electromagnetic valve.
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4. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil, the refrigerator further comprising:
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a liquid injection piping connecting downstream of said condenser to said scroll compressor, a capillary provided in said liquid injection piping, an electromagnetic valve provided upstream of said capillary in said liquid injection piping, and a dryer provided downstream of said condenser.
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5. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil or ether oil, the refrigerator further comprising:
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a liquid injection piping connecting downstream of said condenser to said scroll compressor, a capillary provided in said liquid injection piping, an electromagnetic valve provided upstream of said capillary in said liquid injection piping, wherein said electromagnetic valve is controlled to open when said scroll compressor is started. - View Dependent Claims (7)
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6. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil or ether oil, the refrigerator further comprising:
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a liquid injection piping connecting downstream of said condenser to said scroll compressor, a capillary provided in said liquid injection piping, an electromagnetic valve provided upstream of said capillary in said liquid injection piping, wherein said electromagnetic valve is controlled to close when said scroll compressor is stopped.
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8. A refrigerating apparatus for constituting a refrigerating cycle including at least a scroll compressor and a condenser, further comprising:
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piping connecting downstream of said condenser to said scroll compressor, a dryer disposed in said refrigerating cycle downstream side of said condenser to remove water mixed into said refrigerating cycle. wherein a mixed refrigerant containing at least R-125 and R-143a is used as a refrigerant for said refrigerating apparatus, ester oil or ether oil is used as refrigerator oil for said refrigerating apparatus, and said piping includes an electromagnetic valve and a capillary provided downstream of said electromagnetic valve.
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9. A refrigerating apparatus for constituting a refrigerating cycle including at least a scroll compressor and a condenser, further comprising:
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piping connecting downstream of said condenser to said scroll compressor, wherein a mixed refrigerant containing at least R-125 and R-143a is used as a refrigerant for said refrigerating apparatus, ester oil or ether oil is used as refrigerator oil for said refrigerating apparatus, and said piping includes an electromagnetic valve and a capillary provided downstream of said electromagnetic valve, and further comprising;
a strainer provided upstream of said electromagnetic valve.
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10. A refrigerator comprising a scroll compressor, a condenser, a mixed refrigerant containing at least R-125 and R-143a, and a refrigerator oil composed of ester oil or ether oil, the refrigerator further comprising:
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a liquid injection piping connecting downstream of said condenser to said scroll compressor, a capillary provided in said liquid injection piping, an electromagnetic valve provided upstream of said expansion equipment in said liquid injection piping, and a dryer disposed in said refrigerating cycle downstream side of said condenser to remove water mixed into said refrigerating cycle.
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Specification