Abstract: 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.

Abstract: 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.

Abstract: To control fluctuation of blown air temperature of a heat exchanger to a small value without adding a movable mechanism such as a variable restricting valve, a heat exchanger for heating air by exchanging heat between hot water supplied from a water-cooling type engine and air, a flow control valve for controlling a hot water flow amount to the heat exchanger and a bypass circuit for allowing hot water to flow while bypassing the heat exchanger are provided. A pressure-responsive valve is provided on the bypass circuit and an opening degree of the bypass circuit corresponding to a pressure rise of the hot water is increased. The flow of returning hot water from the heat exchanger is blocked by the flow of the bypass side hot water at a merging portion where the bypass side hot water discharged from the pressure-responsive valve merges with the returning hot water discharged from the heat exchanger.

Abstract: 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.

Abstract: An air conditioning apparatus for a rear seat of a vehicle includes a centrifugal fan disposed at a downstream air side of an evaporator. The centrifugal fan is a backward curved fan having a plurality of blades each of which is curved backward relative to a rotation direction of the centrifugal fan. In the centrifugal fan, because a main component of velocity vector is in a radial direction of the centrifugal fan, a dynamical-pressure component of air blown from the centrifugal fan can be effectively changed to a hydrostatic-pressure component. Thus, during a cooler mode where air is simultaneously blown from first and second air outlets toward the rear space of the passenger compartment, a pressure of air blown from the first and second air outlets can be increased, and an amount of air blown toward the rear space of the passenger compartment can be sufficiently increased.

Abstract: In a cooling water circuit system, cooling water pumped by a mechanically-driven first water pump circulates in a cooling water circuit, and flows through a radiator and a heater core in parallel in the cooling water circuit. An electrically-driven second water pump is disposed in the cooling water circuit at a position where cooling water to be supplied to the radiator from the first water pump and cooling water to be supplied to the heater core from the first water pump flow together. A check valve is provided in the cooling water circuit in parallel with the second water pump so that cooling water flows in one way from a water suction side of the second water pump toward a discharge side thereof. Thus, when the second water pump is operated, a total amount of cooling water pumped by the first water pump and the second water pump can flow through the radiator and the heater core.

Abstract: A heating apparatus for a vehicle includes a heat exchanger for heating air blown into a passenger compartment by using cooling water for cooling an engine as a heating source, and a combustor for heating cooling water flowing into the heat exchanger. When the combustor is stopped, exhaust gas of the engine is introduced into the combustor so that the exhaust gas of the engine is heat-exchanged with cooling water in the combustor, and is introduced into an intake pipe of the engine. Therefore, exhaust gas of the engine, introducing into the intake pipe of the engine, is cooled in the combustor without an additional heat exchanger provided in an engine compartment.

Abstract: A decompressing device for decompressing refrigerant that is discharged from a compressor is provided at an inlet of a hot-gas bypass passage. The refrigerant flows in the hot-gas bypass passage after being decompressed by the decompressing device to bypass a condenser at a heating mode. In this case, because the refrigerant flows in the hot-gas bypass passage with a temperature that is lowered by the decompression, heat loss at a pipe portion of the hot-gas bypass passage is effectively decreased.

Abstract: A hot-water type heating apparatus includes a heat exchanger and a flow rate control valve for controlling hot water supplied to the heat exchanger. The heat exchanger includes an inlet side tank placed at a lower side, an outlet side tank placed at an upper side, and a core portion disposed between the inlet side tank and the outlet side tank. An inner space of the inlet side tank is partitioned into four spaces. Hot water from a hot water inlet pipe is divided into four flows, and flows into tubes of the core portion after passing through the four spaces. Because hot water from the hot water inlet pipe is compulsorily divided into four flows to pass through the four spaces, it can prevent hot water from mainly flowing through the core portion at a side proximate to the hot water inlet pipe and a hot water outlet pipe.

Abstract: An air-conditioning case (2d) of a front air-conditioning unit (2) includes therein a branching duct (2c) for dividing the flow of the air-conditioned air to the seat (3) of occupants, and a cool/warm air switch (10) for switching the cool air (7) and the warm air (8) of the air-conditioned air and sending the resultant air to air supply ports (19). The air supply ports (19) are connected to the seat (3) by a single air duct (4). Therefore, the duct configuration is very simple. Also, the air duct (4) can be an existing one connected to the rear foot vent (30).

Abstract: An automotive air conditioner comprises 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.

Abstract: When the engine is stopped while the engine is warmed up, the cooling water in the engine stays therein without flowing out of the engine, and the cooling water in the radiator or the bypass passage is used for heating source for the heating operation. In this way, it is possible to heat the passenger compartment continuously even after the engine is stopped and to suppress the temperature of the cooling water from lowering to reduce the emission at restarting of the engine.

Abstract: A main evaporator cools a driver's compartment of a vehicle while a cooling storage evaporator cools cooling storage packs that are used in cooling a sleeping compartment. Refrigerant is supplied to the main evaporator at the actuation of a first solenoid valve while refrigerant is supplied to the cooling storage evaporator at the actuation of a second solenoid valve. If a first switch is being actuated after the completion of the cooling storage operation of the cooling storage evaporator on the cooling storage packs and the temperature of the cooling storage packs is no more than a preset temperature, for example, -5.degree. C., FIR control is performed for alternately actuating the first solenoid valve and the second solenoid valve based on a predetermined time ratio (for example, 10 minutes 15 seconds).

Abstract: A flow-quantity control valve controlling hot-water flow to a heat exchanger and a bypass circuit allowing hot water to bypass the heat exchanger are provided along with a pressure-actuated valve in the bypass circuit which is responsive to a pressure increase of hot water from an engine. Inlet-side opening portions, outlet-side opening portions, and a bypass-side opening portion are provided in a control passage of a valve body of the flow-quantity control valve. Main flow of dynamic pressure of hot water sprayed from portions on a small opening-degree side act upon a valve body side of the pressure-actuated valve. Due to this, dynamic pressure of the hot water in a small opening-degree region of the flow-quantity control valve can be effectively used to increase a valve-lift quantity of the pressure-actuated valve, thereby reducing a fluctuation range of blown-air temperature of the heat exchanger.

Abstract: To be able to control minute flow in a heat exchanger flow control valve without requiring a minute opening portion, an opening surface area of a hot-water inlet pipe into which hot water flows from an engine is restricted by a first restricting portion of a control passage provided in a needle valve of a flow control valve, and along with this, an opening surface area of a hot-water outlet pipe connected to an inlet side of a heat exchanger for heater use is restricted by a second restricting portion of a control passage formed in the needle valve, and a middle portion of these two control passages is constantly connected to a bypass circuit by a third restricting portion.

Abstract: A position of a second permanent magnet with respect to a first permanent magnet is defined by assembling a driving side support member, a thrust bearing, a spacing member, a radial bearing, and a driven side support member. The first and second permanent magnets are respectively held on the driving side support member and the driven side support member. Accordingly, variation of a magnetic gap between the first and second permanent magnets can be reduced. Variations in assembling the parts hardly affect the variation of the magnetic gap.

Abstract: An air conditioning apparatus for a seat of a vehicle includes a seat air-blowing unit disposed in a lower portion of the seat, and a seat duct for blowing air from an air conditioning unit to the seat air-blowing unit. The air conditioning unit includes a case for forming therein a cool air passage and a warm air passage, and a switching door for opening and closing the cool air passage and the warm air passage. When a stationary state is set from a cool-down state during cooling mode, the switching door closes the cool air passage to fully open the warm air passage. Thus, inside air is introduced into the warm air passage from a foot air outlet of the air conditioning unit, is supplied to the seat air-blowing unit through the seat duct, and is blown from a seat surface of the seat toward a passenger seated on the seat. As a result, in the air conditioning apparatus, cool air and inside air can be readily switched with a simple structure.

Abstract: A refrigerating cycle apparatus for averting shortages of its refrigerant in a refrigerating cycle and of oil reflux regardless of fluctuations in the progress of freezing in a cold accumulating material. In operation, two solenoid valves are opened and a compressor is activated. The activated compressor causes stagnant refrigerant inside a cold accumulating evaporator to be collected into a receiver. Thereafter, one solenoid valve is closed to let the refrigerant flow only to the cold accumulating evaporator. This makes it possible to circumvent shortages of the refrigerant in the refrigerating cycle and of oil reflux irrespective of varying progress in the freezing status of the cold accumulating material.

Abstract: A deodorizing filter for adsorbing malodorous particles in air is disposed at a downstream air side of a circumferential wall of an inside/outside air switching rotary door which opens and closes inside and outside air intake ports. A gap having a predetermined distance is provided between the deodorizing filter and the circumferential wall of the rotary door. The deodorizing filter is rotated integrally with the rotary door. When the rotary door is rotated to open both the outside and inside air intake ports at their intermediately opened positions, the inside air flowing from the inside air intake port directly flows into an outlet side of an inside/outside air switching box, and the outside air introduced from the outside air intake port passes through the gap and the deodorizing filter and flows into the outlet side of the inside/outside air switching box.

Abstract: A heat recovery unit in which cooling water absorbs heat generated in a water-cooled alternator and a viscous heater in which cooling water absorbs heat generated in a viscous fluid within a heat-generating chamber have a common cooling water passage. Further, a rotor of the alternator and a rotor of a viscous heater are disposed on a shaft to have a common driving shaft and a common V-belt. Therefore, cooling water pipes of a cooling water circuit are simply connected, a large space is not necessary for winding the V-belt of a belt transmitting mechanism, and the number of parts of a heating apparatus can be decreased. Further, because heat generated in the viscous fluid of the viscous heater and heat generated with an operation of the alternator are used as a supplementary heating source, a sufficient heating capacity can be provided for a passenger compartment even in a vehicle in which heat generated in the engine is small.