A first evaporator connected to an outlet side of an ejector, a second evaporator connected to a refrigerant suction port of the ejector, a throttle mechanism arranged on an inlet side of a refrigerant flow of the second evaporator and for reducing the pressure of the refrigerant flow are provided.
A first evaporator connected to an outlet side of an ejector, a second evaporator connected to a refrigerant suction port of the ejector, a throttle mechanism arranged on an inlet side of a refrigerant flow of the second evaporator and for reducing the pressure of the refrigerant flow are provided. Furthermore, the ejector, the first evaporator, the second evaporator and the throttle mechanism are assembled integrally with each other to construct an integrated unit having one refrigerant inlet and one refrigerant outlet. Hence, mounting performance of an ejector type refrigeration cycle can be improved.
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The invention claimed is: 1. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the eje
The invention claimed is: 1. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member; and wherein the evaporator includes a heat exchanging core portion having a plurality of refrigerant passages in which refrigerant flows to perform heat exchange with air passing therethrough, and a tank for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, and wherein the ejector is arranged in the tank of the evaporator in the integrated member. 2. The unit for an ejector type refrigeration cycle as in claim 1, wherein the evaporator of the integrated member is an evaporator connected to the refrigerant suction port of the ejector and for evaporating the refrigerant to be drawn into the refrigerant suction port. 3. The unit for an ejector type refrigeration cycle as in claim 2, further comprising a throttle mechanism, arranged on an inlet side of a refrigerant flow of the evaporator connected to the refrigerant suction port of the ejector, for reducing pressure of the refrigerant flow, wherein the throttle mechanism is assembled in the integrated member. 4. The unit for an ejector type refrigeration cycle as in claim 3, wherein the integrated member has one refrigerant inlet from which refrigerant is introduced, and one refrigerant outlet from which refrigerant is discharged, and wherein the refrigerant inlet is branched into a first passage connected to an inlet side of the nozzle part of the ejector and a second passage connected to an inlet side of the throttle mechanism. 5. The unit for an ejector type refrigeration cycle as in claim 3, wherein the throttle mechanism is arranged in the tank of the evaporator of the integrated member. 6. The unit for an ejector type refrigeration cycle as in claim 3, wherein the ejector and the throttle mechanism are arranged in one tank among the plurality of tanks. 7. The unit for an ejector type refrigeration cycle as in claim 3, wherein the throttle mechanism is arranged outside of the tank. 8. The unit for an ejector type refrigeration cycle as in claim 3, wherein the throttle mechanism is a capillary tube. 9. The unit for an ejector type refrigeration cycle as in claim 3, wherein the throttle mechanism is a fixed throttle hole. 10. The unit for an ejector type refrigeration cycle as in claim 1, wherein the evaporator of the integrated member includes a first evaporator connected to an outlet side of the ejector and for evaporating the refrigerant discharged from the ejector, the evaporator of the integrated member further comprising a second evaporator connected to the refrigerant suction port of the ejector. 11. The unit for an ejector type refrigeration cycle as in claim 10, wherein the tank includes a tank of the first evaporator and a tank of the second evaporator for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, wherein the ejector is arranged in an inside space of the tank of the second evaporator which constructs an outlet portion of the refrigerant passages, wherein the integrated member includes a connection bock for fixing a portion adjacent to a refrigerant outlet portion of the ejector, and the connection block is arranged in an inside space of the tank of the second evaporator, wherein the connection block has a connection hole communicating with a refrigerant outlet portion of the ejector formed therein, and wherein the communication hole communicates with an inside space constructing an inlet portion of a refrigerant passage of the first evaporator, in the tank of the first evaporator. 12. The unit for an ejector type refrigeration cycle as in claim 10, wherein the tank includes a tank of the first evaporator and a tank of the second evaporator for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, wherein the ejector is arranged in an inside space of the tank of the second evaporator which constructs an outlet portion of a refrigerant passage of the second evaporator, wherein the integrated member has a communication space that is separated from the refrigerant passage of the second evaporator and is partitioned off at an end portion opposite to the inside space where the ejector is arranged, and wherein the ejector has a refrigerant outlet side passage that communicates with an inside space of the tank of the first evaporator which constructs an inlet portion of a refrigerant passage of the first evaporator, via the communication space. 13. The unit for an ejector type refrigeration cycle as in claim 1, wherein the integrated member has one refrigerant inlet from which refrigerant is introduced, and one refrigerant outlet from which refrigerant is discharged. 14. The unit for an ejector type refrigeration cycle as in claim 13, wherein the integrated member includes a connection block in which the refrigerant inlet and the refrigerant outlet are provided. 15. The unit for an ejector type refrigeration cycle as in claim 1, wherein the ejector includes a mixing part for mixing refrigerant jetted from the nozzle part and having a high velocity with refrigerant drawn into the refrigerant suction port, and a pressure increasing part for converting velocity energy of the refrigerant mixed in the mixing part to pressure energy. 16. An ejector type refrigeration cycle including the unit according to claim 1, comprising: a compressor that sucks and compresses refrigerant from the evaporator; and a radiator for radiating high-pressure refrigerant discharged from the compressor. 17. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; a first evaporator connected to an outlet side of the ejector and for evaporating the refrigerant discharged from the ejector; and a second evaporator connected to the refrigerant suction port of the ejector, wherein the second evaporator is assembled integrally with the ejector to construct an integrated member, and wherein the first evaporator is arranged on an upstream side of the second evaporator in an air flow direction. 18. The unit for an ejector type refrigeration cycle as in claim 17, wherein the second evaporator includes a heat exchanging core portion having a plurality of refrigerant passages in which refrigerant flows to perform heat exchange with air passing therethrough, and a tank for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, and wherein the tank at one side of the plurality of refrigerant passages has a first space part for collecting the refrigerant from the refrigerant passages and a second space part for distributing the refrigerant into the refrigerant passages, and wherein the refrigerant suction port of the ejector is located in the first space part of the tank to communicate with the first space part. 19. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member, wherein the evaporator includes a heat exchanging core portion having a plurality of refrigerant passages in which refrigerant flows to perform heat exchange with air passing therethrough, and a tank for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, and wherein the ejector is arranged substantially in parallel with a longitudinal direction of the tank of the evaporator. 20. The unit for an ejector type refrigeration cycle as in claim 19, wherein the ejector is disposed within the tank of the evaporator. 21. The unit for an ejector type refrigeration cycle as in claim 19, wherein the tank at one side of the plurality of refrigerant passages has a first space part for collecting the refrigerant from the refrigerant passages and a second space part for distributing the refrigerant into the refrigerant passages, and wherein the refrigerant suction port of the ejector is located in the first space part of the tank to communicate with the first space part. 22. A unit for an ejector type refrigeration cycle comprising an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member, a separate tank part for mounting the ejector, wherein the ejector is located in the separate tank part; and wherein the suction port of the ejector is located in the separate tank part. 23. The unit for an ejector type refrigeration cycle as in claim 22, wherein the evaporator includes a heat exchanging core portion having a plurality of refrigerant passages in which refrigerant flows to perform heat exchange with air passing therethrough, and a tank for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, and the separate tank part is separated from the tank to the evaporator, and communicates with the tank of the evaporator via a through hole. 24. The unit for an ejector type refrigeration cycle as in claim 22, wherein the evaporator is a suction side evaporator that is connected to the refrigerant suction port of the ejector and is configured to evaporate the refrigerant to be drawn to the refrigerant suction port, wherein the suction side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant to be drawn to the refrigerant suction port passes, and a tank having an inner space positioned at a refrigerant outlet side of the refrigerant passages of the heat exchange core portion, and wherein the through hole is a hole through which the inner space of the tank communicates with the refrigerant suction port of the ejector. 25. The unit for an ejector type refrigeration cycle according to claim 22, wherein the evaporator is a discharge side evaporator that is connected to a refrigerant outlet side of the ejector and is configured to evaporate the refrigerant flowing out of the ejector, wherein the discharge side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant discharged from the ejector passes, and a tank having an inner space positioned at a refrigerant inlet side of the refrigerant passages of the heat exchange core portion, and wherein the through hole is a hole through which the inner space of the tank communicates with the refrigerant outlet side of the ejector. 26. The unit for an ejector type refrigeration cycle according to claim 22, wherein the evaporator includes a discharge side evaporator that is connected to a refrigerant outlet side of the ejector and is configured to evaporate the refrigerant flowing out of the ejector, and a suction side evaporator that is connected to the refrigerant suction port of the ejector and is configured to evaporate the refrigerant to be drawn to the refrigerant suction port, wherein the discharge side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant discharged from the ejector passes, wherein the suction side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant to be drawn to the refrigerant suction port passes, wherein the tank of the discharge side evaporator has an inner space positioned at a refrigerant inlet side of the refrigerant passages of the heat exchange core portion of the discharge side evaporator, and the tank of the suction side evaporator has an inner space positioned at a refrigerant outlet side of the refrigerant passages of the heat exchange core portion of the suction side evaporator, and wherein the through hole includes a first through hole through which the inner space of the tank of the discharge side evaporator communicates with the refrigerant discharge side of the ejector, and a second through hole through which the inner space of the tank of the suction side evaporator communicates with the refrigerant suction port of the ejector. 27. The unit for an ejector type refrigeration cycle as in claim 26, wherein the discharge side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant discharged from the ejector passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion of the discharge side evaporator and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion of the discharge side evaporator, wherein the suction side evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant to be drawn to the refrigerant suction port passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion of the suction side evaporator and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion of the suction side evaporator, wherein the separate tank part is inserted between the tank of the discharge side evaporator and the tank of the suction side evaporator which are adjacent each other, and the separate tank part extends in a tank longitudinal direction of the tanks of the suction and discharge side evaporators, and wherein the ejector is located in the separate tank part of the evaporator. 28. The unit for an ejector type refrigeration cycle as in claim 22, wherein the evaporator includes a plurality of refrigerant passages, a tank for distributing the refrigerant into the plurality of refrigerant passages and for collecting the refrigerant from the plurality of refrigerant passages, wherein the separate tank part is separated from the tank, wherein the separate tank part extends in a tank longitudinal direction of the tank and is recessed into an inner side of the tank, and wherein the ejector is located in the separate tank part of the evaporator so as to configure an integrated member of the ejector and the evaporator. 29. The unit for an ejector type refrigeration cycle as in claim 22, wherein the evaporator includes a plurality of refrigerant passages, a tank for distributing the refrigerant into the plurality of refrigerant passages and for collecting the refrigerant from the plurality of refrigerant passages, wherein the separate tank part is separated from the tank, wherein the separate tank part extends in a tank longitudinal direction of the tank, and is overlapped with the tank in a flow direction of air, and wherein the ejector is located in the separate tank part of the evaporator so as to configure an integrated member of the ejector and the evaporator. 30. The unit for an ejector type refrigeration cycle as in claim 22, wherein the evaporator includes a plurality of refrigerant passages, a tank for distributing the refrigerant into the plurality of refrigerant passages and for collecting the refrigerant from the plurality of refrigerant passages, wherein the separate tank part is separated from the tank, wherein the ejector is located in the separate tank part of the evaporator so as to configure an integrated member of the ejector and the evaporator, and wherein the separate tank part extends in a tank longitudinal direction of the tank and is located to form a tank space together with the tank. 31. The unit for an ejector type refrigeration cycle as in claim 22, wherein the separate tank part has substantially a circular shape in cross section. 32. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; a first evaporator that is connected to an outlet side of the ejector and evaporates the refrigerant discharged from the ejector; a second evaporator that is connected to the refrigerant suction port of the ejector and evaporates the refrigerant to be drawn by the ejector; and a capillary tube located at an inlet side of the second evaporator in a refrigerant flow direction, and decompresses the refrigerant flow, wherein the first evaporator, the second evaporator, the ejector and the capillary tube are assembled integrally with each other to construct an integrated member, wherein the first evaporator and the second evaporator each have a tank for distributing refrigerant to or for collecting refrigerant from a plurality of refrigerant passages, wherein the tank of the first evaporator and the tank of the second evaporator are arranged adjacent each other in an air flow direction to form a valley portion between the tank of the first evaporator and the tank of the second evaporator, and wherein the capillary tube is disposed in the valley portion and is fixed to an outer surface of the tanks. 33. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, a throttle mechanism, arranged on an inlet side of a refrigerant flow of the evaporator connected to the refrigerant suction port of the ejector, for reducing pressure of the refrigerant flow, wherein the evaporator is assembled integrally with the ejector to construct an integrated member, wherein the evaporator of the integrated member is an evaporator connected to the refrigerant suction port of the ejector and for evaporating the refrigerant to be drawn into the refrigerant suction port, wherein the throttle mechanism is assembled in the integrated member, wherein the integrated member has one refrigerant inlet from which refrigerant is introduced, and one refrigerant outlet from which refrigerant is discharged, and wherein the refrigerant inlet is branched into a first passage connected to an inlet side of the nozzle part of the ejector and a second passage connected to an inlet side of the throttle mechanism. 34. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member, wherein the evaporator of the integrated member is an evaporator connected to the refrigerant suction port of the ejector and for evaporating the refrigerant to be drawn into the refrigerant suction port, wherein the integrated member has one refrigerant inlet from which refrigerant is introduced, and one refrigerant outlet from which refrigerant is discharged, and wherein the refrigerant inlet is provided to be branched into a first passage connected to an inlet side of the nozzle part of the ejector and a second passage connected to an inlet side of the throttle mechanism. 35. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; a first evaporator connected to an outlet side of the ejector and for evaporating the refrigerant discharged from the ejector, a second evaporator connected to the refrigerant suction port of the ejector, wherein the first evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant discharged from the ejector passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion of the first evaporator and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion of the first evaporator, wherein the second evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant to be drawn to the refrigerant suction port passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion of the second evaporator and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion of the second evaporator, wherein the tank of the first evaporator and the tank of the second evaporator are arranged adjacent each other in an air flow direction, wherein the ejector extends in a direction parallel with a longitudinal direction of the tank of the first evaporator and a longitudinal direction of the tank of the second evaporator, and contacts both the tank of the first evaporator and the tank of the second evaporator. 36. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; and an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member, wherein the evaporator includes a heat exchanging core portion having a plurality of refrigerant passages in which refrigerant flows to perform heat exchange with air passing therethrough, and a tank for distributing refrigerant to or for collecting refrigerant from the plurality of refrigerant passages, wherein the heat exchanging core portion includes an upwind surface positioned at an upwind side, a downwind surface positioned at a downwind side, and a side surface perpendicular to the upwind surface and the downwind surface, and wherein the ejector is enlarged in a direction parallel to a longitudinal direction of the side surface. 37. The unit for an ejector type refrigeration cycle as in claim 36, wherein the evaporator is connected to a refrigerant outlet side of the ejector and is configured to evaporate the refrigerant flowing out of the ejector, wherein the evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant discharged from the ejector passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion, wherein the longitudinal direction of the ejector extends at a side surface of the heat exchanging core portion in a top-bottom direction such that the outlet side of the ejector is positioned at an upper side of the refrigerant suction port, and wherein the outlet side of the ejector communicates with a distribution inner space within the tank of the evaporator, for distributing the refrigerant to the refrigerant passages. 38. The unit for an ejector type refrigeration cycle as in claim 37, wherein the tank has therein a collection inner space for collecting the refrigerant from the refrigerant passage, and the distribution inner space is positioned near the ejector than the collection inner space. 39. The unit for an ejector type refrigeration cycle as in claim 36, the evaporator is connected to the refrigerant suction port of the ejector and is configured to evaporate the refrigerant to be drawn to the refrigerant suction port, wherein the evaporator includes a heat exchange core portion having the plurality of refrigerant passages through which the refrigerant to be drawn to the refrigerant suction port passes, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion, wherein the longitudinal direction of the ejector extends at a side surface of the heat exchanging core portion in a top-bottom direction such that the outlet side of the ejector is positioned at an upper side of the refrigerant suction port, and wherein the refrigerant suction side of the ejector communicates with a collection inner space within the tank of the evaporator, for collecting the refrigerant from the refrigerant passages. 40. The unit for an ejector type refrigeration cycle as in claim 39, wherein the tank has therein a distribution inner space for distributing the refrigerant into the refrigerant passages, and the collection inner space is positioned near the ejector than the distribution inner space. 41. A unit for an ejector type refrigeration cycle, comprising: an ejector that has a nozzle part for decompressing refrigerant and a refrigerant suction port from which refrigerant is drawn by a high-velocity flow of refrigerant jetted from the nozzle part, wherein the ejector mixes the refrigerant jetted from the nozzle part and the refrigerant drawn from the refrigerant suction port, and discharges the mixed refrigerant; an evaporator that evaporates the refrigerant to be drawn by the ejector or the refrigerant discharged from the ejector, wherein the evaporator is assembled integrally with the ejector to construct an integrated member; and an external cassette part fixed externally to the evaporator of the integrated member, wherein the ejector is arranged in the external cassette part, wherein the evaporator includes a heat exchange core portion having a plurality of refrigerant passages through which the refrigerant flows, and a tank for distributing the refrigerant into the plurality of refrigerant passages of the heat exchange core portion and for collecting the refrigerant from the plurality of refrigerant passages of the heat exchange core portion, wherein the heat exchanging core portion includes an upwind surface positioned at an upwind side, a downwind surface positioned at a downwind side, and a side surface perpendicular to the upwind surface and the downwind surface, and wherein the external cassette part is attached to the side surface of the heat exchange core portion, and wherein the refrigerant suction port of the ejector is positioned inside the external cassette part. 42. The unit for an ejector type refrigeration cycle according to claim 41, wherein the external cassette part has a first communication hole communicating with the refrigerant suction port of the ejector, and a second communication hole communicating with the outlet side of the ejector, and wherein the first communication hole and the second communication hole are provided on a surface facing the side surface of the heat exchanging core portion.
Kern Josef (Alfdorf DEX) Bardong Helmut (Stuttgart DEX) Humpolik Bohumil (Ludwigsburg DEX), Evaporator particularly suitable for air conditioners in automotive vehicles.
Kozinski Richard C. (27671 Dowland Warren MI 48092), Vehicle air conditioning system utilizing refrigerant recirculation within the evaporator/accumulator circuit.
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