Denso Corporation

Nippondenso Co., Ltd.

Other

Yuichi Shirota

Hikaru Sugi

Hisashi Tanaka

Manabu Miyata

Hiroshi Nonoyama

Koji Takahashi

Koji Ito

Kazushi Shikata

Yukio Uemura

Koichi Ban

Teruhiko Kameoka

Yasushi Yamanaka

Koichi Ito

Tatsuhiro Suzuki

Kenji Suwa

Gouta Ogata

Yoshimitsu Inoue

Hiroshi Kishita

Yasuhiko Niimi

Keiichi Kitamura

Takashi Toyoshima

Hiroyuki Tomita

Hiroya Hasegawa

Masami Konaka

Seiji Miwa

Kazushi Yamamoto

Kenji Yamada

Kenichi Fujiwara

Yasutoshi Yamanaka

Eiichi Torigoe

Yoshitaka Tomatsu

Kazutaka Suzuki

Hideyuki Takahashi

Yoshihiko Okumura

Makoto Ikegami

Kazutoshi Nishizawa

Kazutoshi Kuwayama

Hiroki Matsuo

Tetsuji Nobuta

Tetsuya Takechi

Toshihiko Muraki

Kazuhito Miyagawa

Sadayuki Kamiya

Tokuhisa Takeuchi

Mineo Yamaguchi

Yasushi Ueda

Masayoshi Naka

Hideo Ohta

Yashushi Yamanaka

An ejector-integrated heat exchanger includes multiple tube forming members. The tube forming member includes an ejector, a flow-out side refrigerant passage, and a suction side refrigerant passage. The ejector includes a nozzle portion decompressing a refrigerant, a refrigerant suction port, and a pressure increasing portion in which the refrigerant drawn from the refrigerant suction port and the refrigerant jetted from the nozzle portion are mixed, a pressure of the mixed refrigerant being increased in the pressure increasing portion. In the flow-out side refrigerant passage, the refrigerant flowing out of the pressure increasing portion performs heat exchange while flowing. In the suction side refrigerant passage, the refrigerant that is to be drawn through the refrigerant suction port performs heat exchange while flowing. Multiple tube forming members are arranged such that the refrigerant flows in parallel with each other.

Ejector-integrated heat exchanger

In an ejector refrigeration cycle, an inlet of a nozzle portion of an ejector is connected to a refrigerant outlet side of a high-stage side evaporator, a refrigerant suction port of the ejector is connected to a refrigerant outlet side of a low-stage side evaporator, and an internal heat exchanger is provided for exchanging heat between a high-pressure refrigerant flowing into a low-stage side throttle device for decompressing the refrigerant flowing into the low-stage side evaporator, and a low-stage side low-pressure refrigerant flowing out of the low-stage side evaporator. Because a difference in enthalpy between the inlet and outlet of the low-stage side evaporator can be enlarged, the cooling capacities exhibited by the respective evaporators can be adjusted to be closer to each other even if the flow-rate ratio Ge/Gn of the suction refrigerant flow rate Ge to the injection refrigerant flow rate Gn is set to a relatively small value so as to make it possible to improve the COP of the cycle.

Ejector refrigeration cycle

An ejector draws a refrigerant on a downstream side of an exterior heat exchanger serving as an evaporator, from a refrigerant suction port by a suction effect of an injection refrigerant injected from a nozzle portion for decompressing a part of the refrigerant discharged from a compressor, and mixes the injection refrigerant with the suction refrigerant to pressurize the mixed refrigerant at a diffuser. The refrigerant flowing out of the diffuser is drawn into the compressor. In this way, the density of the refrigerant drawn into the compressor can be increased, thereby suppressing reduction in flow amount of the refrigerant flowing into an interior condenser serving as a radiator. Thus, even if the temperature of the outside air (heat-absorption target fluid) is decreased, the interior condenser is prevented from degrading its heating capacity for the ventilation air (heating target fluid).

Refrigeration cycle device

In a vehicle air conditioning system, a cold accumulator is disposed between a downstream air side of a cooling heat exchanger and an upstream air side of a heating heat exchanger to be cooled by cold air having passed through the cooling heat exchanger. Further, the cold accumulator is disposed at the upstream air side of an air mixing door.

Vehicle air conditioning system with cold accumulator

An automotive air conditioner includes an offset blower for blowing an air, an evaporator is centrally disposed within a dashboard and receives the air from below, and a heater approximately horizontally disposed above the evaporator. The evaporator inclines downward along the direction of the air flow. A plurality of condensed water guide plates are provided under the evaporator so as to allow a condensed water smoothly flow on the surface of each guide plate and is discharged from the evaporator through a condensed water drain pipe.

Automotive air conditioner

A vehicle air-conditioning system calculates and indicates the remaining time of effective cooling by cold air discharge from its cold storage unit during a vehicular eco-run halt. In cold discharge cooling mode, a first cold discharge cooling remaining time tx1 is calculated from the remaining cold heat of a cold storage medium. A second cold discharge cooling remaining time tx2 is calculated from temperature changes of the cold storage unit. The second remaining time tx2 is set to zero when the cold storage unit temperature rises to a cooling upper target temperature. The first remaining time tx1 is selected in the cold discharge cooling mode as long as the temperature of the cold storage unit is below a temperature near the solidifying point of the cold storage medium. The second remaining time tx2 is selected when the cold storage unit temperature exceeds the temperature near the solidifying point.

Vehicle air-conditioning system with cold storage unit

In a vehicle air conditioner, a cold accumulator is disposed at a downstream air side of an evaporator to be cooled by cold air after passing through the evaporator. A cold accumulating material is sealed within the cold accumulator to be solidified while being cooled by the cold air from the evaporator. The cold accumulating material is a mixture of plural kinds of paraffin materials having different melting points, equal to or more than two. The plural kinds of the paraffin materials are mixed, so that the cold accumulating material having a melting point in a range of 7-11&deg; C. can be obtained. In this case, cooling function in the cold accumulator can be improved.

Vehicle air conditioner with cold accumulator

In a vehicle air conditioner, a temperature sensor is disposed on a tank of an evaporator to contact the tank. In addition, the temperature sensor is disposed at a tank position separated from a refrigerant inlet and a refrigerant outlet. Accordingly, a downstream space of the evaporator can be effectively used, and the size of the air conditioner can be reduced while the temperature of the evaporator can be accurately detected using the temperature sensor.

Vehicle air conditioner with arrangement of temperature detector

A vehicle air conditioner allows storing cold thermal energy in a cold thermal energy storage unit during operation of a vehicle engine to be used later during an eco-run mode of a hybrid vehicle. Vehicle cabin air is cooled by the cold thermal energy quantity of a cold thermal energy storage unit when the vehicle engine is stopped and cold air continues to be requested by passengers. During engine operation, the cold thermal energy storage time, which is the time it takes for the temperature of the cold thermal energy storage unit to reach the solidifying point of the cold thermal energy storage material or lower, is measured. The stored cold thermal energy quantity of the cold thermal energy storage material during the operation of the vehicle engine is calculated based on information including the cold thermal energy storage time and cold air volumes.

Vehicle air conditioner that operates during engine stops

In the transmission and air conditioning control system having an air conditioner provided with a compressor driven by an engine and an evaporator for cooling a passenger room, and a transmission connected between the engine and a wheel, an electronically control device controls the transmission ratio to a reference value to be decided by the operating condition of the vehicle and also to a final value, which is higher than the reference value, when a degree of cooling demand is greater than a predetermined value. As a result, the revolution of the engine is more increased so that the revolution of compressor may be more increased to improve the cool down performance.

Vehicle transmission and air conditioning control system

An air conditioning apparatus for a vehicle includes a front air-conditioning unit for adjusting a temperature of air blown toward a front seat side in a passenger compartment, and a rear air-conditioning unit for adjusting a temperature of air blown toward a rear seat side in the passenger compartment. In the front air-conditioning unit, a ratio between an amount of air passing through a front heater core and an amount of air bypassing the front heater core is adjusted by an air mixing door, and the temperature of air blown toward the front seat side in the passenger compartment is adjusted by the rotation of the air mixing door. On the other hand, in the rear air-conditioning unit, a flow control valve for controlling a flow rate of hot water flowing into a rear heater core is provided, and the temperature of air blown toward the rear seat side in the passenger compartment is adjusted by the flow control valve. Thus, the air conditioning apparatus has a downsized rear air-conditioning unit while preventing air-conditioning capacity for the passenger compartment from being lowered.

Air conditioning apparatus for vehicle

In a vehicle air-conditioning system, an evaporator is disposed in an air-conditioning case to form a bypass passage through which air bypasses the evaporator, and an opening degree of the bypass passage is adjusted by a bypass door. When a vehicle engine operates, the system performs a cold-storing mode where cold quantity stored in condensed water on the evaporator is increased. On the other hand, when operation of the vehicle engine is stopped, the system performs a cold-releasing mode where air passing through the evaporator is cooled by cold released from frozen condensed water. During the cold-storing mode and the cold-releasing mode, temperature of air blown into a passenger compartment can be adjusted by adjusting the opening degree of the bypass passage. Thus, in the vehicle air-conditioning system, cold-storing quantity in the evaporator can be improved while power-saving effect of the vehicle engine is improved.

Vehicle air conditioning system

An electric power unit is composed of a secondary battery, a cooling fan, a fan motor and a case for the secondary battery, the cooling fan and the fan motor. The case has a partition for isolating the fan motor from the secondary battery and cooling fan. A magnetic joint is disposed between the motor and the cooling fan.

Electric power unit

An electric element (Peltier element composite) is disposed in a boundary between an outside air introduction passage and an inside air introduction air passage (,). The Peltier element composite absorbs heat from the inside air in the inside air introduction passage to cool and dehumidify the inside air and radiates heat to outside air in the outside air introduction passage. The inside air and outside air are blown out from a defroster air outlet through a second air passage. In this way, it is possible to increase an amount of introduced inside air and to improve the heating performance while maintaining the defrosting performance.

Air conditioning apparatus for vehicle with thermoelectric dehumidifier in a double layer system

A motor vehicle dehumidifier, including a dehumidifying drying agent, that can provide a required dehumidifying capacity with a reduced overall quantity of drying agent compared to conventional drying agent-based dehumidifiers. In the present invention, a heat exchanger is disposed on an upstream side of a drying agent unit, and heat is exchanged in the heat exchanger between inside air to be dehumidified and low-temperature outside air used to cool the inside air. The air cooled by the heat exchanger flows into the drying agent unit and is dehumidified. Because the air has an increased relative humidity as a result of being cooled, the amount of water adsorbed from it per unit of drying agent is increased, as the water adsorption characteristic of the drying agent is greatly influenced by the relative humidity of the air passing over it, and is markedly improved by an increase in the relative humidity of that air.

Motor vehicle dehumidifier with drying agent and drying agent regenerative control

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Anjo, Japan

Yuichi Shirota