摘要:
A core unit of a heat exchanger is composed of a plurality of parallel flat tubes, a plurality of corrugated fins, a support member disposed between two of the corrugated fins and an electric heater disposed inside the support member. The support member has a pair of parallel plates bonded to the corrugated fins at the summits of corrugation of the corrugated fins. The electric heater is composed of a heating element and an insulation member inserted between the heating element and the parallel plates.
摘要:
A header has a tank member having a transverse cross-section of a circular arc shape, and a tube attachment member having a transverse cross-section flatter than the above-mentioned circular arc shape as a whole, are opposed and joined. The tube attachment member has identical curvature portions constituted with an inner diameter R2 which is the same as the inner diameter R2 of the tank member at both sides to be joined to the tank member, and has a large curvature portion constituted with an inner diameter R1 which is larger than the inner diameter R2 of the tank member at an intermediate portion interposed between the identical curvature portions. A connecting position P between the identical curvature portion and the large curvature portion is inside from both edges of a tube.
摘要:
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.
摘要:
A heat-exchanging core portion includes a plurality of tubes arranged in parallel and a plurality of fin members disposed between a pair of adjacent tubes. While an electric heat emitting unit is constructed by supporting a heat emitting body including a heat emitting element inside a frame through a fin member. The electric heat emitting unit is installed into a space, which is defined in the heat-exchanging core portion, having a predetermined distance after the heat-exchanging core portion is assembled and integrally brazed while defining the space.
摘要:
A tube inside passage height (Tr) is set within a range of 0.35-0.8 mm. Thereby, sum of radiation performance reduction due to pressure loss inside tube and radiation performance reduction due to air flow resistance is reduced, thereby attaining high radiation performance. Especially, when the tube inside passage height (Tr) is set within a range of 0.5-0.7 mm, the radiation performance is further improved.
摘要:
A tube inside passage height (Tr) is set within a range of 0.35–0.8 mm. Thereby, sum of radiation performance reduction due to pressure loss inside tube and radiation performance reduction due to air flow resistance is reduced, thereby attaining high radiation performance. Especially, when the tube inside passage height (Tr) is set within a range of 0.5–0.7 mm, the radiation performance is further improved.
摘要:
In a receiver-integrated condenser, a super-cooling portion for cooling liquid refrigerant from a receiving unit is disposed between first and second condensing portions in a core portion in a vertical direction. Therefore, in an engine-idling, even when high-temperature air having passed through the receiver-integrated condenser is introduced again toward an upstream air side of the receiver-integrated condenser through a lower side of the receiver-integrated condenser, the high-temperature air is not introduced toward the arrangement position of said super-cooling portion, because the super-cooling portion is positioned at an upper side from the second condensing portion. Thus, super-cooling performance of refrigerant in the super-cooling portion of the core portion is prevented from being decreased even in the engine idling.
摘要:
A tube inside passage height (Tr) is set within a range of 0.35-0.8 mm. Thereby, sum of radiation performance reduction due to pressure loss inside tube and radiation performance reduction due to air flow resistance is reduced, thereby attaining high radiation performance. Especially, when the tube inside passage height (Tr) is set within a range of 0.5-0.7 mm, the radiation performance is further improved.
摘要:
A double heat exchanger including a radiator and a condenser for an air conditioner is mounted on a vehicle through first and second brackets. When the radiator is detached from the vehicle, a bolt for securing a side plate of the radiator to the second bracket is removed firstly, and the radiator is inclined in a front-rear direction of the vehicle. Thereafter, the radiator is pulled upwardly to be detached from the first bracket. When the radiator is attached to the vehicle, a first extending portion of the side plate of the radiator is inserted between first and second holding portions of the first bracket. In this state, the radiator is moved to contact an inclining member of the first bracket, and is fastened to the second bracket through the bolt. Thus, the radiator is readily detached from and attached to the vehicle and requires a small mounting space.
摘要:
A corrugated fin type heater core includes an inlet tank, an outlet tank, tubes and a corrugated fin. The corrugated fin has a cross section elongated in a direction parallel to the direction in which air flows to a region where heat exchange takes place. The corrugated fin is brazed to the tubes and has a multiplicity of louvers angled in the direction in which the air is introduced. The corrugated fin has a height Hf within the range of between 2.5 mm and 6.0 mm.