| 摘要 |
A device for air temperature control in a vehicle has a unit forming a first circuit for circulation of an coolant, a unit forming a second circuit for circulation of a refrigerant, a unit for connecting the first circuit with an engine for heating the coolant, a unit for providing a heat exchange between the second circuit and the first circuit for cooling the coolant, a single air temperature regulating element, and a unit for alternatively connecting the first a unit to the air temperature regulating element so that when the coolant is heated from the engine and supplied through the first a unit the air temperature regulating element heats air in the vehicle, or connecting the second a unit with the common air temperature regulating element so that when the coolant in the first circuit is cooled by heat exchange with the refrigerant of the second circuit and the cooled coolant is supplied to the air temperature regulating element to cool air in the vehicle, and a heat exchanger which provides a heat exchange between the coolant of the first circuit and the refrigerant of the second circuit, the heat exchanger including a container through which the coolant is passed, and a plurality of tubes extending through the container and through which the refrigerant is passed, the tubes being arranged so as to form a plurality of group of tubes with the groups spaced from one another in a vertical direction and not connected with one another, while the tubes within each group are connected in series with one another.
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