Vehicle heat pump air conditioning system with heating and refrigerating functions

Abstract

The invention discloses a vehicle heat pump air conditioning system with heating and refrigerating functions. The vehicle heat pump air conditioning system comprises an air conditioning compartment body, a compressor, a liquid accumulator, a condenser, condenser fan sets, an evaporator, evaporator fan sets and an expansion valve; the air conditioning compartment body is arranged in a driving cab, a hot air generating area and a cold air generating area are formed in the air conditioning compartment body, the condenser and the condenser fan sets are installed in the hot air generating area, and the evaporator, the evaporator fan sets and the expansion valve are installed in the cold air generating area; the upper end of the air conditioning compartment body is provided with a face blowing air opening and a defrosting air opening, one side of the air conditioning compartment body is provided with an air inlet opening, a first air exhausting opening and a second air exhausting opening, and the lower end of the other side of the air conditioning compartment body is provided with a foot blowing air opening; the air inlet opening is communicated with the hot air generating area and the cold air generating area through two independent channels respectively; a first air exhausting valve, a second air exhausting valve, a defrosting valve, a face blowing valve, a temperature-controlled valve and a foot blowing valve are arranged in the air conditioning compartment body; the compressor and the liquid accumulator are arranged in an engine room. The vehicle heat pump air conditioning system still can work normally on the condition that the temperature is lower.

Description

technical field [0001] The invention belongs to a vehicle air-conditioning system, in particular to a vehicle heat pump air-conditioning system with heating and cooling functions. Background technique [0002] Vehicle air-conditioning systems usually use vapor compression refrigeration cycles, and currently R134a is generally used as the working fluid to meet the comfort requirements of passenger compartments in summer. When the occupants have heating needs in winter, the automotive air conditioning system makes the air flow outside the vehicle absorb waste heat from the engine coolant and provide it to the cabin. [0003] However, with the research and development of some advanced high-efficiency engines and new energy vehicles such as hybrid and electric vehicles, the vehicle air conditioner will not be able to provide enough heat for heating the cabin in winter, or it will not be able to use the waste heat of the engine for heating at all. Usually, such problems can be s...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the technical problems in the known technology, the present invention provides a heating and cooling system that simplifies the complexity and control difficulty of the air conditioning system, reduces potential leakage points, and avoids the system not working normally when the ambient temperature is low. Functional vehicle heat pump air conditioning system

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