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US 12,104,832 B2Granted
Refrigeration apparatus with stainless steel four-way switching valve and stainless steel pipes connected thereto
AssigneeDaikin Industries, Ltd.
InventorsJunichi Hamadate, Masanori Jindou, Yoshihiro Teramoto, Hiroaki Matsuda, Masato Okuno
Life of this patent
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Abstract
A refrigeration apparatus includes: a casing that houses a compressor therein; a four-way switching valve; an accumulator; a first pipe that causes a refrigerant to flow between the four-way switching valve and a discharge portion of the compressor; and a second pipe that causes a refrigerant to flow between the four-way switching valve and the accumulator. The four-way switching valve, the first pipe, and the second pipe are all made of stainless steel.
Claims8
A refrigeration apparatus comprising:
- a casing that houses a compressor therein;
- a four-way switching valve;
- an accumulator;
- a first pipe that:
- causes a refrigerant to flow between the four-way switching valve and a discharge portion of the compressor, and
- comprises:
- a stainless steel pipe portion;
- and
- a tubular copper connecting portion;
- and
- a second pipe that causes a refrigerant to flow between the four-way switching valve and the accumulator, wherein
- the four-way switching valve and the second pipe are made of stainless steel,
- the tubular copper connecting portion is disposed at a first end of the first pipe opposite to a second end of the first pipe connected to the four-way switching valve,
- the tubular copper connecting portion is connected to an end of an external pipe, and
- the first end of the stainless steel pipe portion of the first pipe, the tubular copper connecting portion, and the end of the external pipe overlap with each other in a pipe radial direction of the tubular copper connecting portion.
12 more elements
Dependencies are inferred from the claim text.