Ejector
AssigneeDenso Corporation
InventorsHirotsugu Takeuchi, Yoshitaka Tomatsu, Masayuki Takeuchi
Life of this patent
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Abstract
A nozzle (41) is made of a sintered metal, and a pressure increasing portion (a mixing portion (42) and a diffuser (43)) is manufactured by plastic-forming a metal pipe. Accordingly, the nozzle (41) can be manufactured in a short time while high accuracy in machining is maintained. Thus, the cost of manufacturing an ejector (40) can be reduced.
Claims8
An ejector which is a kinetic pump for transferring a fluid by entrainment with a working fluid discharged from a nozzle (41), at high speed, wherein
- the nozzle (41) is sintered at high temperature after compression-molding fine particles.
An ejector which is a kinetic pump for transferring a fluid by entrainment with a working fluid discharged from a nozzle (41), at high speed, wherein
- the nozzle (41) is sintered at high temperature after compression-molding metal powders, and has an inner surface on which a film of nickel is formed.
An ejector being applied to a vapor-compression refrigerator which has a radiator for radiating a refrigerant having high temperature and pressure that is compressed by a compressor (10) and an evaporator (30) for evaporating a decompressed refrigerant having low temperature and pressure and transmits heat from a low temperature side to a high temperature side, comprising
- a nozzle (41) for decompressing and expanding the refrigerant by converting a pressure energy of the refrigerant, which is emitted from the radiator (20), to a speed energy;
- and
- pressure increasing portions (42, 43) for increasing the pressure of the refrigerant by converting a speed energy to a pressure energy while mixing the refrigerant injected from the nozzle (41) and the refrigerant sucked from the evaporator (30), wherein
- the pressure increasing portions (42, 43) are manufactured by deforming a pipe by plastic forming.
Dependencies are inferred from the claim text.