Denso Corporation

Fujikoki Corporation

Koji Takahashi

Yuichi Shirota

Yoshimitsu Inoue

Koichi Ban

Yasuhiro Sato

Tetsuya Takechi

Hideaki Inazawa

Hikaru Sugi

Manabu Miyata

Yasushi Yamanaka

Shinji Aoki

Kazushi Shikata

Hajime Ito

Yukio Uemura

Hiroshi Nonoyama

Keiichi Kitamura

Mikio Fukuoka

Yoshiaki Takano

Atsushi Inaba

Hiroshi Kishita

Yasuhiko Niimi

Daisuke Kondo

Eiichi Torigoe

Michiyasu Yamamoto

Takayuki Matsumoto

Kenji Suwa

Kenichi Mochizuki

Toshihiko Muraki

Mitsugu Nakamura

Sadayuki Kamiya

Tatsuo Tsunooka

Masakazu Nagaya

Masami Taguchi

Reijiro Okano

Toshiaki Nomura

Masayoshi Naka

Yashushi Yamanaka

A housing includes a plurality of valve element housing holes rotatably house valve elements therein, and a plurality of fluid passage holes, each of the fluid passage holes having one end connected to a peripheral wall surface of one of the valve element housing holes and the other end open on an outer wall surface of the housing to circulate fluids. Axes of the valve element housing holes are parallel to each other. Axes of the fluid passage holes are parallel to each other and perpendicular to the axes of the valve element housing holes. Each of the fluid passage holes is connected to at least two of the valve element housing holes, and has a perpendicular-to-axis cross section partially or entirely overlapping the at least two valve element housing holes in an axial direction of the fluid passage hole.

Switch valve

A vapor compression refrigerator having a refrigeration cycle () is disclosed. In a Rankine cycle (), a refrigerant is circulated through a pump (), a heater (), an expander () and a condenser () in that order, and power is recovered by the expanderdue to the expansion of the refrigerant from the heater (). In a host gas cycle (), on the other hand, the inlet of the compressor () can be connected from a point between the pump () and the heater () by a switching path () having a first restricting portion (), the refrigerant is circulated by the compressor () through the heater () and the switching path () in that order, and the heater () exhibits the function of heating a heat generating device ().

Vapor compression refrigerator

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

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

According to the present invention, in an air conditioning apparatus setting a double laminar mode in which inside air and outside air are blown while being partitioned, when the maximum heating state (including the high heating capacity close to the maximum heating operation) is set, a warm air bypass door for introducing warm air directly into a foot opening portion, without being mixed into cool air, functions as a movable partition member for partitioning an air passage at a downstream side of a heating heat exchanger, into an inside air passage and an outside air passage. In this way, it is possible to downsize the air conditioning unit.

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

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

A blower unit includes a centrifugal fan, a fan casing forming a scroll-shaped air passage and accommodating the centrifugal fan, and a partition wall for partitioning an interior of the fan casing into first and second air passages in which different kinds of airs flow, respectively, in the axial direction. The partition wall is molded integrally to the fan casing so as to extend linearly from the inner wall surface of the fan casing toward a radial inside of the fan. The fan casing includes two divided cases having a divided face in the axial direction. In this way, the number of divided cases can be as well as the number of steps of assembling the fan casing can be reduced so that the work efficiency for assembling the fan casing is improved.

Blower unit and air conditioner employing the same

According to the present invention, a blower unit includes a centrifugal fan, a fan casing forming a scroll-shaped air passage and accommodating the centrifugal fan, and a partition wall for partitioning an interior of the fan casing into first and second air passages in which different kinds of airs flow, respectively, in the axial direction. The partition wall is molded integrally to the fan casing so as to extend linearly from the inner wall surface of the fan casing toward a radial inside of the fan. The fan casing includes two divided cases having a divided face in the axial direction. In this way, the number of divided cases can be as well as the number of steps of assembling the fan casing can be reduced so that the work efficiency for assembling the fan casing is improved.

An air conditioning apparatus includes a heating heat exchanger for heating air blown toward a passenger compartment using hot water as a heating source. A plurality of electric heating members are formed integrally with the heating heat exchanger, and electric power supplied to the electric heating members is controlled according a temperature of the hot water. Therefore, a number of the electric heating members to be operated is finely controlled according to the temperature of water flowing through the heating heat exchanger. Further, when a water temperature of the heating heat exchanger is lower than a predetermined temperature (e.g., 35.degree. C.), a water valve is closed to interrupt the flow of water to the heating heat exchanger, and a blower is operated. Therefore, a quantity of heat transmitted from the electric heating members to the water in the heating heat exchanger can be greatly decreased.

Air conditioning apparatus having electric heating member integrated

An air conditioning apparatus for a vehicle includes a heat exchanger for heating air to be blown into a passenger compartment of the vehicle using hot water as a heating source, a plurality of electric heating members formed integrally with the heat exchanger, and a control unit for controlling electric power supplying to the electric heating members and an amount of air blown from a blower. The control unit controls the amount of air blown from the blower based on a heat-radiating amount from the electric heating members and a target temperature of air blown into the passenger compartment. Thus, even when number of the electric heating members to be turned on is changed, the temperature of air blown into the passenger compartment can be set to the target temperature by controlling the amount of air blown from the blower. As a result, the passenger compartment can be effectively quickly heated using the electric heating members.

An electric heat emitter is disposed at a predetermined position in a heat exchanging core portion having a plurality of tubes and corrugated fins. The electric heat emitter includes a positive electrode plate and a negative electrode plate which are insulated from the heat exchanging core portion. An electric wiring cover made of resin having a positive electrode wiring member and a negative electrode wiring member is attached to an outlet tank of the heat exchanger. The positive and negative electrode plates connect to the positive and negative electrode wiring members respectively. Thus, the electric current is supplied to the electric heat emitter through an electric circuit insulated from the heat exchanger, thereby preventing metal parts of the heat exchanger from being electrically corroded.

Heating heat exchanger with electric heat emitter

A vehicle air-conditioning system includes electric heating devices to accelerate a rise in temperature of air for heating a passenger compartment by accelerating a rise in temperature of warm water used to heat the air and by directly heating the air. Electric heating devices are built into a heat exchanger for heating so that the devices can release heat into surrounding air through radiating fins. When the system is in a heating operation region and the temperature of warm water available to flow through the heat exchanger is below a set temperature T.sub.2, the electric heating devices are turned on. A blower for blowing heating air into a passenger compartment through the heat exchanger is stopped, and a warm water valve is opened to allow the warm water to flow through the heat exchanger, whereupon heat from the electric heating devices is released through the radiating fins into the warm water inside the heat exchanger. When the temperature of the warm water rises above the set temperature T.sub.2, the blower is started, and heat from the electric heating devices is released through the radiating fins into the air blown by the blower.

Vehicle air-conditioning system with heat exchanger having integrated

According to the present invention, in an air conditioning apparatus setting a double laminar mode in which an inside air and an outside air are blown while being partitioned, when the maximum heating state is set during an air outlet mode in which air is blown out simultaneously from both of a foot opening portion toward feet of a passenger and a defroster opening portion toward a windshield, a passage for conditioned air is partitioned into a first air passage for the inside air and a second air passage for the outside air. The first air passage is communicated with the foot opening portion, and the second air passage is communicated with the defroster opening portion. In the double laminar mode, at an air downstream side of a heating heat exchanger, there is formed a communication path communicating between the first air passage and the second air passage, and an amount of the outside air at the side of the second air passage is set to be larger than that of the inside air at the side of the first air passage, so that the outside air in the second passage flows into the first air passage through the communication path. In this way, it is possible to improve a defrosting performance of the windshield.

Growing community of inventors

Kariya, Japan

Koji Takahashi