Overhead type heat pump type carriage air-conditioning system with total heat recovery apparatus

Abstract

Disclosed is an overhead type heat pump type carriage air-conditioning system with a total heat recovery apparatus. The system is composed of an overhead type heat pump type air conditioner subsystem, a carriage power system compound total heat recovery subsystem and an operation mode switching control subsystem. The overhead type heat pump type carriage air-conditioning system with the total heat recovery apparatus, provided by the invention, through the combination of the overhead type heat pump type air conditioner subsystem, the carriage power system compound total heat recovery subsystem and the operation mode switching control subsystem, can remarkably solves such salient problems of over-high exhaust temperature of a compressor during low-temperature operation of a heat pump air conditioner, quite thick car outside heat exchanger frosting, quite difficult defrosting, low system power supply capability and heat supply efficiency, poor system operation reliability, low system energy utilization rate and the like.

Description

technical field [0001] The invention relates to a top-mounted heat pump type passenger car heating and cooling air-conditioning system with a total heat recovery device. Background technique [0002] With the development of my country's bus technology and the national policy of energy-saving and environmentally friendly new energy bus will be the future development direction, the development of heat pump type bus air conditioning system with heat recovery device has become one of the key technologies to be solved urgently, the reason The reason is that due to the lack of internal combustion engines, heating in winter is greatly restricted, especially when the outdoor air temperature is very low, the developed heat pump air-conditioning system for passenger cars generally has insufficient heating capacity or even cannot work normally. It has affected the promotion and application of buses in northern cities. [0003] At present, the commonly used solution is mainly to use PTC ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a top-mounted heat pump air-conditioning system for passenger cars with a full heat recovery device, so as to solve the problem that when the outdoor temperature of the current passenger car air-conditioning system is too low, the external heat exchanger is seriously frosted and the whole system cannot work normally. The outstanding problem of the work and the huge waste of energy in its power system

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