Motor-driven air conditioning system for automobile

Abstract

The invention discloses a motor-driven air conditioning system for an automobile, which comprises an air conditioning unit (1), an air conditioning frequency converter (2), a high voltage generator (3), a generator controller (4) and a power accumulator (5). The air conditioning unit (1) is an integrated air conditioning unit arranged at the top of the automobile, the high voltage generator (3) is driven by a crank shaft (6) of an automobile engine through a belt, the generator controller (4) is respectively connected with the high voltage generator (3), the air conditioning frequency converter (2) and the power accumulator (5), and the power accumulator (5) is connected with the air conditioning frequency converter (2). The motor-driven air conditioning system for the automobile can save oil by more than 18% if used for fuel automobiles.

Description

technical field [0001] The invention relates to the field of automobile air conditioners, in particular to an electric air conditioner system for vehicles. Background technique [0002] In order to meet people's ever-increasing comfort requirements, air conditioning systems have become indispensable equipment in modern vehicles. [0003] The vehicle air-conditioning system installed on traditional fuel vehicles mostly adopts a split arrangement, and the air-conditioning compressor mostly adopts a piston compressor, which is installed at the front end of the engine and is driven by the engine crankshaft through a belt drive. The energy efficiency of the compressor is relatively low, about 2.5~ 2.8, the power consumption of the engine is about 6KW; the condenser, condensing fan, evaporator, and evaporative fan are installed on the roof, and the condensing fan and the evaporating fan are powered by the 24V low-voltage excitation generator driven by the engine crankshaft. The h...

AI Technical Summary

Problems solved by technology

[0003] The vehicle air-conditioning system installed on traditional fuel vehicles mostly adopts a split arrangement, and the air-conditioning compressor mostly adopts a piston compressor, which is installed at the front end of the engine and is driven by the engine crankshaft through a belt drive. The energy efficiency of the compressor is relatively low, about 2.5~ 2.8, consumes about 6KW of engine power; the condenser, condensing fan, evaporator, and evaporating fan are installed on the roof, and the condensing fan and evaporating fan are powered by a 24V low-voltage excitation generator driven by the engine crankshaft. The high-speed fan at the installation angle is noisy, and the cold air generated by the air-conditioning system needs to be blown into the car through the air-conditioning channel in the car compartment, resulting in energy loss. Furthermore, the utilization rate of the low-voltage excitation generator is low, about 60%. , therefore, using a 3KW generator to drive the condensing fan and evaporating air requires about 5KW of engine power

To sum up, the power consumption of an ordinary air-conditioning system is about 11Kw, and the comprehensive energy efficiency ratio is only 1.7-1.8. Assuming that the bus runs for 14 hours a day, the energy consumed by the air-conditioning system is about 150Kw·h, and the fuel consumption is about 40 liters, accounting for 100% of fuel vehicles’ daily consumption. About 30% of the oil is used. If the air conditioner does not stop running when parking at a red light, it is also required that the engine does not turn off and run at idle speed, and its power design at idle speed is greater than that of a fuel vehicle engine without air conditioning. , so that even if a fuel vehicle equipped with an air-conditioning system does not use an air conditioner, its fuel consumption is much greater than that of a fuel vehicle without an air conditioner

In addition, the refrigerant circulation pipes of the split-type air conditioning system are very long, which is easy to cause refrigerant leakage, which not only causes waste and pollutes the environment, but also complicates the installation process of the air conditioner

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