Device for automatically forcing to discharge and ventilate air for passenger car and driver's compartment

Abstract

The invention relates to an automatic compulsive air exhaust and exchange device for a car and a cab; the two prolonged sides of the upper cover of a skylight are provided with a foldable wind deflector which leads to collecting more air to form a certain pressure and velocity of flow and being blew into the car as well as leads the air in the car to flow out of the car from an air gate for one aspect; for the other aspect, air collection tubes of a venturi is arranged at the car and the cab; the venture is internally communicated with a waste gas sucker outlet and the waste gas sucker outlet is communicated with the inside of the car; the air collected after the car starts flows out from the venture; known from hydromechanics, if the section area of each location of a pipeline is different, the velocity of flow and the static pressure of the pipeline are also different; the smaller the section area is, the larger the velocity of flow is and the lower the static pressure is; then the waste gas can be automatically exhausted to the outside of the car and fresh air can be sucked into the car again from an air inlet; the two are combined in summer to 'pump out' and 'blow in' to quicken the air flowing in the car to form 'cross ventilation'; the effects of ventilation, air exchange, temperature reduction and refrigeration are better; the air inlet is closed in winter to lead the fresh air to be heated by the hot water heating device of an engine and then sucked into the car, thus leading the inside of the car to be ventilated and warmed. The air conditioning can be opened less or not opened in summer and winter, thus saving energy and protecting the environment.

Description

technical field [0001] The invention relates to air conditioning technology and physical fluid mechanics of automobiles. Background technique [0002] At present, passenger cars such as cars, large and medium-sized passenger cars, taxis, buses, rail cars and passenger trains and truck cabs, the exhaust gas in the car is discharged and the intake of fresh air is mainly exchanged by the same window. However, when the air is cold in winter, early spring and late autumn, the windows cannot be opened wide, otherwise the people sitting by the windows will not be able to bear it. The small opening of the window can only allow the air to flow by the window, but the air in the car still cannot flow. The space inside the car is so big, the air is not circulated, people need to inhale less and less oxygen all the time, and the exhaled carbon dioxide, human body waste, inhalable particulate matter and harmful gases from the engine will accumulate more and more, repeatedly breathing the...

AI Technical Summary

Problems solved by technology

Although the sunroof upper cover of the current passenger car and truck cab is lifted forward and upward, it can block the wind into the car, but because there are no left and right side covers, most of the wind blocked by the upper cover flows away from the left and right sides of the lower part of the upper cover and enters the car. Because of the small pressure, the air in the car cannot flow out from the window, especially in hot weather, the cooling effect is very small, and people can only feel it when they stand directly under the sunroof when riding a car.

Now, many passenger cars use air conditioners to adjust the temperature inside the car in winter and summer. The air conditioner is used to circulate the air in the car and the windows must be closed. The air conditioner has an air purification device that can remove some harmful substances, but it cannot increase oxygen and negative ions. It is not turned on in summer and winter. Ventilation through the windows is also uncomfortable and makes people feel "motion sickness". Open for a short time, the incoming fresh air and the exhaust gas are very little, which cannot meet the needs of human health. Moreover, the air conditioner is only used for more than one-third of the year, and the windows and skylights are used for ventilation in the rest of the time.

Another problem is that there are currently quite a few passenger cars without air-conditioning, and truck cabs basically have no air-conditioning. It is as uncomfortable in the "ice kiln" or "steamer". Although the air conditioner can solve the problem of cold winter and summer heat, it consumes more energy

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