摘要:
Disclosed therein are a heat pump system for a vehicle and a method of controlling the heat pump system, which variably controls only a compressor 100 if the number of revolutions of the compressor is less than the upper limit of the number of the maximum revolutions of the compressor and operates an electric heater 115 only when the number of revolutions of the compressor reaches the upper limit of the number of the maximum revolutions of the compressor in order to satisfy a target discharge temperature in a heat pump mode, thereby preventing that convergence of an air discharge temperature of the interior of the vehicle is deteriorated or becomes unstable when the compressor 100 and the electric heater 115 are variably controlled at the same time in order to satisfy the target discharge temperature.
摘要:
An air conditioner for a vehicle of the present invention includes: a compressor (21) which compresses a refrigerant; an internal heat exchanger (22, 24) which exchanges heat between the refrigerant and air to be supplied into an interior space; an external heat exchanger (23) which exchanges heat between the refrigerant and outside air that is air outside of the interior space; a battery (5) installed in the vehicle; a battery heat exchanger (29) which exchanges heat between the refrigerant and the battery by causing at least a part of the refrigerant, which travels to the compressor from the external heat exchanger, to go through the battery heat exchanger; a throttle adjusting part (30) which is arranged in a refrigerant flow passage on an upstream side of the battery heat exchanger, and is able to adjust a flow of the refrigerant; and a control unit (40) which controls the throttle adjusting part. The control unit controls the flow of the refrigerant through the throttle adjusting part based on an extra heat exchange capacity that is an extra capacity of the external heat exchanger with respect to the internal heat exchanger in terms of heat quantity, and a detection result of a temperature detector.
摘要:
An air conditioner includes a fixed displacement-type first compression mechanism and a variable displacement-type second compression mechanism independent from each other in a refrigeration cycle, and further includes second compression mechanism displacement control means, compression mechanism operation switching control means, an evaporator for refrigerant, a condenser, a blower, evaporator temperature detection means, and evaporator target temperature calculation means. When the refrigeration cycle is operated only by the first compression mechanism, referring to a temperature (Teva) detected by the evaporator temperature detection means, a temperature (Toff) calculated by the evaporator target temperature calculation means and a predetermined value A, if a condition of Teva-Toff‰§A is satisfied, both compression mechanisms are operated simultaneously. The condition of required cooling ability is properly determined, an optimum control for air conditioning is realized, and the loss of consumption power and the like can be adequately suppressed.
摘要:
A control methodology for dynamically adjusting the switching limits of a cycled refrigerant compressor (12) in an air conditioning system (10) with the objective of achieving an optimal or specified tradeoff between compressor cycling frequency and discharge air temperature variation under all operating conditions. In a first embodiment, the compressor cycling limits are controlled to maintain a virtually constant discharge air temperature variation for all operating conditions (84, 92). In a second embodiment, the compressor cycling limits are controlled so that the discharge air temperature variation changes in relation to the discharge air temperature to provide a virtually constant human comfort level for the occupants (86, 92). And in a third embodiment, the compressor cycling limits are controlled so that the discharge air temperature variation changes in relation to the ambient or outside air temperature to provide a virtually constant human comfort level for the occupants (88, 92).
摘要:
Die Erfindung betrifft ein Verfahren zum Betrieb einer Klimaanlage eines Kraftfahrzeuges mit mindestens einem Kompressor, sowie eine für die Anwendung des Verfahrens geeignete Klimaanlage gemäß des Oberbegriffes des Anspruchs 1.