Refrigerant distributor, heat exchanger, and air-conditioning apparatus
AssigneeMitsubishi Electric Corporation
InventorsAtsushi TAKAHASHI, Satoru YANACHI, Hiroki ISHIYAMA
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Abstract
A refrigerant distributor includes: an outer tube to which a heat transfer tube is connected; and an inner tube accommodated in the outer tube and having a dispersion hole that allows refrigerant to flow to the outer tube. The inner tube has an inner wall on which a projection is formed to extend in an extending direction of the inner tube. A plurality of projections including the projection are formed on the inner wall of the inner tube and arranged in a circumferential direction of the inner tube.
Claims15
A refrigerant distributor comprising:
- an outer tube to which a heat transfer tube is connected;
- and
- an inner tube accommodated in the outer tube and having a dispersion hole that allows refrigerant to flow to the outer tube,
- wherein an angle φ from a vertical line that extends from a center of the inner tube to a line that extends to the dispersion hole is set to satisfy the following formulas (1) and (2):
- θ
- -
- 20
- <
- φ
- <
- 180
- (
- 1
- )
- α
- =
- 1
- -
- θ
- /
- 180
- +
- sin
-
- θcosθ
- /
- π
- (
- 2
- )
- where θ is an estimated liquid level angle, and α is a void fraction.
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A refrigerant distributor comprising:
- an outer tube to which a heat transfer tube is connected;
- and
- an inner tube accommodated in the outer tube and having a dispersion hole that allows refrigerant to flow to the outer tube,
- wherein
- the inner tube has an inner wall on which a projection is formed to extend in an extending direction of the inner tube,
- a plurality of projections including the projection are formed on the inner wall of the inner tube and arranged in a circumferential direction of the inner tube, and
- the inner tube is provided on an upstream side in a flow of two-phase gas-liquid refrigerant, and has a projection formation portion in which the projection is formed and a smooth portion which is located downstream of the projection formation portion in the flow of the two-phase gas-liquid refrigerant and in which the inner wall of the inner tube is smooth.
A refrigerant distributor comprising:
- an outer tube to which a heat transfer tube is connected;
- and
- an inner tube accommodated in the outer tube and having a dispersion hole that allows refrigerant to flow to the outer tube,
- wherein
- the inner tube has an inner wall on which a projection is formed to extend in an extending direction of the inner tube,
- a plurality of projections including the projection are formed on the inner wall of the inner tube and arranged in a circumferential direction of the inner tube, and
- the inner tube is provided on an upstream side in a flow of two-phase gas-liquid refrigerant, and has a smooth portion in which the inner wall of the inner tube is smooth and a projection formation portion which is located downward of the smooth portion in the flow of the two-phase gas-liquid refrigerant and in which the projection is provided.
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Dependencies are inferred from the claim text.