Full-fresh-air overhead air conditioner

Abstract

The invention relates to the field of an air conditioning device of a passenger car, in particular to a full-fresh-air overhead air conditioner which comprises a fresh air inlet, a fresh air door, a return air inlet, a return air grille, an air supply outlet, a core body dust filter screen, a fresh air filter screen, a condensate fan, a core body of an evaporator, an evaporation fan and a motor of the fresh air door, and has the characteristic structure that the full-fresh-air overhead air conditioner further comprises a return air door mechanism, an overflow air door mechanism, a return air door motor and an overflow air door motor; the design of the oversized fresh air inlet is adopted, and the return air door mechanism and the overflow air door mechanism are added, so that three running modes including full fresh air, part fresh air and full return air can be realized; due to the design of water leakage prevention, a rotary shutter structure is respectively adopted by the fresh airdoor, a return air door and an overflow air door which are respectively controlled by three independent motors; and a fresh air filtering device and a return air filtering device are arranged. The full-fresh-air overhead air conditioner has the characteristics of energy conservation, environmental protection, high comfortableness and good technological efficiency.

Description

technical field [0001] The invention relates to the field of air conditioners for passenger cars, in particular to a fresh air top-mounted air conditioner. Background technique [0002] At present, the commonly used passenger car air conditioners in China usually cool the air inside the car to achieve the effect of reducing the air temperature and humidity, that is, the air inside the passenger car circulates. Due to the good airtightness of the air-conditioned passenger car, if the air conditioner is used in a closed space for a long time, the air quality in the car will be reduced. With the continuous improvement of living standards, people have higher and higher requirements for the comfort, health and safety of traveling by car, and there are new requirements for the air quality in passenger cars. In order to maximize the intake of fresh air in the car, and at the same time ensure that the car can cool down quickly, there is enough healthy, clean and high-quality fresh ...

AI Technical Summary

Problems solved by technology

However, this top-mounted bus air conditioner has the following disadvantages: (1) It cannot be improved on some existing top-mounted bus air conditioners, because the height of the product needs to be increased, which will affect the appearance of the product; (2) Its evaporator cover An air duct protrudes from the top, which is equivalent to the sandwich structure of the evaporator cover, which can only be made of glass fiber reinforced plastic and needs secondary processing, which is easy to leak; (3) It uses a damper plate to seal both the return air outlet and the Blocking the fresh air outlet is bulky and heavy, and its sealing performance will be reduced after running for a period of time; (4) The mechanical linkage mechanism and the cable are prone to failure. It is completed under the tension of the spring itself, and the spring is difficult to reset after a period of continuous stretching; (5) There is no fresh air filter at the fresh air outlet, and a large amount of dust in the outside air enters the return air cavity, and the evaporator core It is easy to accumulate dust and cause a decrease in heat exchange efficiency, making the air cleanliness in the car poor

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