Patent application number | Description | Published |
20080264097 | Unit for Ejector Type Refrigeration Cycle - 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. | 10-30-2008 |
20090013704 | Two-stage decompression ejector and refrigeration cycle device - A two-stage decompression ejector includes a variable throttle mechanism having a first throttle passage for decompressing a fluid and a valve body for changing a throttle passage area of the first throttle passage, a nozzle having therein a second throttle passage for further decompressing the fluid decompressed by the variable throttle mechanism, and a suction portion for drawing a fluid by a suction effect of a high-velocity jet fluid from the nozzle. The formula of 0.07≦Vo×S/vn≦0.7 is satisfied, in which Vo is an intermediate-pressure space volume (mm | 01-15-2009 |
20090049852 | Ejector-type air-conditioning and refrigerating system for automotive vehicle - An ejector-type air-conditioning and refrigerating system according to the present invention is mounted on an automotive vehicle. The system includes a first evaporator for cooling a passenger compartment and a second evaporator for cooling a refrigerator mounted on the vehicle. Refrigerant is supplied to the first evaporator through an ejector, while the refrigerant is supplied to the second evaporator through a restrictor disposed in a branch passage. Refrigerant evaporated in the second evaporator is sucked by a sucking portion provided in the ejector through a sucking passage. A noise dissipater for suppressing noises caused by pulsating vibrations generated in the ejector is disposed in the sucking passage at a position close to the sucking portion of the ejector. The noise dissipater is postured in the sucking passage so that liquid components in the refrigerant including oil contained in the refrigerant are prevented from being retained in the dissipater. | 02-26-2009 |
20090049854 | Refrigeration-cycle component assembly and vehicular refrigeration system - A refrigeration-cycle component assembly includes a pipe connecting member, a box temperature-sensitive expansion valve, an ejector, a passenger-compartment high-pressure pipe, and a passenger-compartment low-pressure pipe. The component assembly is provided in a flat space, which is defined at a side of an air-conditioning unit in a vehicle transverse direction, and which is flat in the vehicle transverse direction. The pipe connecting member and the refrigerant suction portion are intensively arranged at a vehicle front side in the flat space. The component assembly is entirely covered by a heat insulating member. | 02-26-2009 |
20090090129 | Refrigerant cycle device with ejector - In a refrigerant cycle device with an ejector, a branch portion is located at an upstream side of a nozzle portion of the ejector so that the refrigerant flowing out of an exterior heat exchanger is branched into first and second streams in a cooling operation mode. A passage switching portion is configured such that the refrigerant of the first stream flows through the nozzle portion of the ejector, and the refrigerant of the second stream flows through the decompression unit, the using-side heat exchanger, and the refrigerant suction port of the ejector, in the cooling operation mode. In contrast, the refrigerant discharged from the compressor flows into the nozzle portion after passing through the using-side heat exchanger, and the refrigerant flowing out of the exterior heat exchanger flows into the refrigerant suction port of the ejector, in the heating operation mode. | 04-09-2009 |
20090095013 | Ejector cycle system - An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator located to evaporate refrigerant flowing out of the ejector, a branch passage branched from a branch portion between the radiator and a nozzle portion of the ejector and coupled to a refrigerant suction port of the ejector, a throttling unit located in the branch passage, and a second evaporator located downstream of the throttling unit to evaporate refrigerant. In the ejector cycle system, a variable throttling device is located in a refrigerant passage between a refrigerant outlet of the radiator and the branch portion to decompress the refrigerant flowing out of the radiator. | 04-16-2009 |
20090241573 | Refrigerant cycle device - A subcool condenser having a condensation heat exchange portion, a receive portion and a supercool heat exchange portion is used as an outdoor heat exchanger that functions as a radiator in a cooling operation mode so that COP in the cooling operation mode is increased. In contrast, in a heating operation mode, a refrigerant bypass device that causes the refrigerant to flow so as to bypass the supercool heat exchange portion is provided so that pressure loss generated in the refrigerant flowing through the outdoor heat exchanger is decreased. Thereby, driving force of a compressor can be decreased and COP in the heating operation mode can be improved. | 10-01-2009 |
20090297367 | Ejector and manufacturing method thereof - A housing is configured into a tubular form and receives at least a portion of an ejector functional unit, which includes a nozzle and a body. A housing side opening radially penetrates through an outer peripheral wall surface and an inner peripheral wall surface of the housing and communicates with the fluid suction opening of the body. The housing side opening is adapted to join with a suction opening side external device, through which the fluid is drawn into the fluid suction opening. | 12-03-2009 |
20100175422 | Evaporator unit - In an evaporator unit, a first evaporator is coupled to an ejector to evaporate refrigerant flowing out of the ejector, a second evaporator is coupled to a refrigerant suction port of the ejector to evaporate the refrigerant to be drawn into the refrigerant suction port, a flow amount distributor is located to adjust a flow amount of the refrigerant distributed to the nozzle portion and a flow amount of the refrigerant distributed to the second evaporator, and a throttle mechanism is provided between the flow amount distributor and the second evaporator to decompress the refrigerant flowing into the second evaporator. The flow amount distributor is adapted as a gas-liquid separation portion and as a refrigerant distribution portion for distributing separated refrigerant into the nozzle portion and the second evaporator. Furthermore, the flow amount distributor and the ejector are arranged in line in a longitudinal direction of the ejector. | 07-15-2010 |
20100257893 | Ejector-type refrigerant cycle device - An ejector-type refrigerant cycle device includes: a first evaporator | 10-14-2010 |
20100319393 | Ejector cycle system - An ejector cycle system with a refrigerant cycle through which refrigerant flows includes an ejector disposed downstream of a radiator, a first evaporator that evaporates refrigerant flowing out of the ejector, a throttling unit located in a branch passage and depressurizes refrigerant to adjust a flow rate of refrigerant, and a second evaporator located downstream of the throttling unit. In the ejector cycle system, a flow ratio adjusting means adjusts a flow ratio between a first refrigerant flow amount depressurized and expanded in a nozzle portion of the ejector and a second refrigerant flow amount drawn into a refrigerant suction port of the ejector, based on a physical quantity related to at least one of a state of refrigerant in the refrigerant cycle, a temperature of a space to be cooled by the first and second evaporators, and an ambient temperature of the space. | 12-23-2010 |
20110005268 | EJECTOR-TYPE REFRIGERATION CYCLE DEVICE - In an ejector-type refrigeration cycle device provided with a first compression mechanism and a second compression mechanism, a refrigerant outlet of a suction side evaporator is coupled to a refrigerant suction port of the ejector, and a second compression mechanism is provided between the suction side evaporator and the refrigerant suction port of the ejector. Thus, even in an operation condition in which suction capacity of the ejector is decreased in accordance with a decrease of the flow amount of a drive flow of the ejector, the suction capacity of the ejector can be supplemented by the operation of the second compression mechanism. Accordingly, even when a variation in the flow amount of the drive flow is caused, the ejector-type refrigeration cycle device can be stably operated. | 01-13-2011 |
20110259042 | Evaporator unit - An integrated unit is formed by integrally assembling an ejector, a first evaporator that evaporates refrigerant discharged from the ejector, a second evaporator that evaporates the refrigerant drawn into the ejector, a refrigerant dividing portion that adjusts a flow amount of refrigerant flowing in and divided to the nozzle portion and the second evaporator, and a joint in which a refrigerant inlet and a refrigerant outlet are formed. In the joint, there is formed a gas-liquid separation portion that causes refrigerant flowing therein to swirl to separate it into gas and liquid. The ejector, refrigerant dividing portion and joint are arranged in a longitudinal direction of the ejector. | 10-27-2011 |
20120042686 | Ejector-type refrigerant cycle device - An ejector-type refrigerant cycle device includes a compressor, a radiator, an ejector, a suction side evaporator disposed to evaporate refrigerant to be drawn into a refrigerant suction port of the ejector, and a discharge capacity control portion configured to control a refrigerant discharge capacity of the compressor. The discharge capacity control portion increases the refrigerant discharge capacity of the compressor in accordance with an increase of a requirement capacity required in a refrigerant cycle of a general operation, when the requirement capacity is larger than a standard value. In contrast, when the requirement capacity required in the refrigerant cycle is equal to or smaller than the standard value, the discharge capacity control portion controls the refrigerant discharge capacity of the compressor to be switched alternately between a high capacity operation and a low capacity operation. Thus, a refrigerant circulation amount in the refrigerant cycle can be suitably adjusted. | 02-23-2012 |
20150013368 | EXPANSION VALVE - A temperature sensitive rod is communicated with a diaphragm that is displaceable in response to a pressure difference between an internal pressure of a sealed space, in which a temperature sensitive medium is sealed, and a pressure of a low pressure refrigerant outputted from an evaporator. A blind hole, which opens to the sealed space, is formed in an inside of the temperature sensitive rod. The temperature sensitive medium is a mixture gas of the refrigerant and an inert gas. A mixing ratio of the inert gas in the temperature sensitive medium corresponds to a ratio of an equivalent diameter of the blind hole relative to a depth of the blind hole in such a manner that a time constant of heat conduction from the temperature sensitive rod to the temperature sensitive medium is kept within a desired time constant range. | 01-15-2015 |