摘要:
In a receiver for separating gas refrigerant and liquid refrigerant and for storing liquid refrigerant for a refrigerant cycle, refrigerant form a condensing portion of a condenser flows into an upper side of a tank member of the receiver from a first refrigerant inlet and flows into a lower side of the tank portion from a second refrigerant inlet. Further, liquid refrigerant stored in the tank member of the receiver is discharged to an outside through a refrigerant outlet. Accordingly, refrigerant from the condensing portion of the condenser flows into the tank portion of the receiver from both upper and lower sides of a gas-liquid boundary surface. As a result, it can prevent the gas-liquid boundary surface of the receiver from being disturbed during a refrigerant introduction of the receiver, while cooling effect of the upper side of the receiver is effectively improved.
摘要:
An engine cooling apparatus suitable for use in a vehicle shortens engine warm-up time without decreasing the heat-radiation capacity of a radiator. A shroud is disposed between a radiator and a water-cooled engine. A first air passage for blowing air toward the engine and its auxiliaries is formed in the upper side of the shroud, and a second air passage for discharging air having passed through the radiator to outside the engine compartment is formed in the lower side of the shroud. Accordingly, air is prevented from directly striking the engine and from passing around to the upstream side of the radiator through gaps between the walls of the engine compartment and the radiator. Thus the engine warm-up time is shortened without reducing the heat-radiation capacity of the radiator.
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 receiver-integrated condenser for a refrigerating system for use in an automotive vehicle is disclosed. The condenser is composed of a heat exchanging core having many tubes extending horizontally in which refrigerant is cooled down and condensed, a pair of header tanks elongated vertically and connected to both ends of the tubes, and a refrigerant receiver for reserving liquid refrigerant therein integrally connected to one of the header tanks which has an inlet joint for receiving overheated refrigerant from a compressor. The inner space of the header tank to which the receiver is connected is divided by a separator into an upper space for receiving the overheated refrigerant and a lower space for receiving refrigerant cooled down in the heat exchanging core. The receiver is connected integrally to the header tank so that it does not overlap with the upper space of the header tank in order to minimize heat transfer from the upper space to the receiver. Thus, the liquid refrigerant reserved in the receiver does not evaporate therein, and a whole space of the receiver is utilized for reserving the liquid refrigerant therein, enabling to fill additional refrigerant in the system without causing a sub-cool temperature rise.
摘要:
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).
摘要:
A separator-integrated condenser includes a core portion, a header tank and a separating unit integrally formed with the header tank for separating gas-liquid two-phase refrigerant into gas refrigerant and liquid refrigerant and storing the liquid refrigerant therein. An inlet through which refrigerant in the header tank is introduced into the separating unit is disposed at one longitudinal end of the separating unit, and an outlet through which refrigerant is discharged from the separating unit is disposed at the other longitudinal end of the separating unit. When the condenser is mounted to be inclined at up to 45 degrees with respect to a horizontal direction in a longitudinal direction of the header tank and the separating unit, the inlet is disposed at an upper side of the outlet. As a result, gas-liquid two-phase refrigerant is sufficiently separated by the separating unit.
摘要:
In a refrigerant condenser including a super-cooling portion, the super cooling portion is located in the upper position of a core portion. Thus, when a vehicle engine idles, and high temperature cooling air having passed through the refrigerant condenser and the vehicle radiator is lead to the air upstream side of the condenser through the lower portion of the condenser, because the super-cooling portion is located at the upper position of the core portion, the super-cooling portion is not influenced by the high temperature air.
摘要:
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.
摘要:
An aluminum alloy clad sheet for heat exchangers includes a core material, a cladding material 1, and a cladding material 2, one side and the other side of the core material being respectively clad with the cladding material 1 and the cladding material 2, the core material containing 0.5 to 1.2% of Si, 0.2 to 1.0% of Cu, 1.0 to 1.8% of Mn, and 0.05 to 0.3% of Ti, with the balance being Al and unavoidable impurities, the cladding material 1 containing 3 to 6% of Si, 2 to 8% of Zn, and at least one of 0.3 to 1.8% of Mn and 0.05 to 0.3% of Ti, with the balance being Al and unavoidable impurities, and the cladding material 2 containing 6 to 13% of Si, with the balance being Al and unavoidable impurities, the cladding material 1 serving as the outer side of the aluminum alloy clad sheet during use.
摘要:
A communication chamber communicated with the downstream end of a condensing part is provided within a header. A gas-liquid separation chamber is provided beside the communication chamber for separating the refrigerant into gas and liquid phases. The height of this gas-liquid separation chamber is set to be smaller than that of the communication chamber to prevent the interference of the gas-liquid separation chamber with peripheral devices of a vehicle to facilitate the installation of the condenser. Further, a refrigerant introducing means is provided at a portion corresponding to a liquid refrigerant pool part at the lower part of the gas-liquid separation chamber within the partition part for introducing the refrigerant within the communication chamber into the liquid refrigerant within the gas-liquid separation chamber.