Heat exchange – With vehicle feature – Heating and cooling
Patent
1989-11-06
1990-12-11
Ford, John
Heat exchange
With vehicle feature
Heating and cooling
165 43, 165140, 165 96, 165 97, 165126, 98 208, 98 209, 98 211, 237 123A, B60H 300, F25B 2900
Patent
active
049763091
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to the transportation engineering, and more specifically, it is concerned with an air conditioner for a vehicle.
The field of most effective application of the invention is self-propelled vehicles having a liquid engine cooling system, in particular, automobiles, road building and construction machinery, agricultural machines.
The invention may also be used in various stationary plants.
PRIOR ART
Known in the art is a conditioner (U.S., A, 3670808) which ensures ventilation, cooling and heating of air in the cabin (passenger compartment) of a vehicle. The conditioner consists of a housing divided by an internal partition wall into a condenser compartment and a compartment in which an evaporator and a heater are mounted in series which are connected to a compressor of a refrigerating machine and a cooling system of an engine, respectively. Electric fans for ensuring the necessary air circulation in air ducts are provided in each compartment.
The conditioner is mounted on the roof of a vehicle so that it does not have any limitations as to size, but this position of the conditioner gives rise to an additional aerodynamic drag for a vehicle so that energy performance of the vehicle is impaired and fuel consumption increases.
In addition, supply of heated air to the cabin (passenger compartment) from the top hampers optimum distribution of air flows, namely along the bottom of the cabin (passenger compartment), windscreen and side windows and calls for an auxiliary system of air ducts and room for their accommodation.
Also known in the art is an air conditioner for a vehicle (U.S., A, 4262738) mounted in a cabin (passenger compartment) of a vehicle. The conditioner consists of a housing having an admission part having ports and a controlled gate for the intake of outside and/or recirculation air from the cabin (passenger compartment) of the vehicle, an evaporator and a heater provided therein in series and in a spaced relation to each other, which are connected to a compressor of a refrigerating machine and to an engine cooling system, respectively, an electric fan supplying air through said heat exchangers into the cabin (passenger compartment) of the vehicle, controlled gates provided in hot and cool air ducts, including a gate provided in the space between the heat exchangers.
The conditioner ensures a rational distribution of air flows, but it has a large axial size (because of a tandem position of the heater, evaporator and the gate provided therebetween) so as to hamper its installation under the instrument board and to complicate construction.
The invention is based on the problem of providing a compact air conditioner for a vehicle using a combination heat exchanger which ensures efficient cooling and heating of air.
DISCLOSURE OF THE INVENTION
This problem is solved by that in an air conditioner for a vehicle, comprising a housing accommodating an evaporator and a heater connected to a compressor and to an engine cooling system of the vehicle, respectively, as well as a fan and controlled gates provided in hot and cool air ducts, according to the invention, the evaporator and heater are made in the form of a stack of alternating heat exchange plates having passages for a heat carrier, and the fan is installed upstream the stack of the heat exchange plates in the air flow, an auxiliary controlled gate of the hot air duct being provided between the fan and the stack of the heat exchange plates which is mounted for movement between two positions so that in the first position the gate shuts off a part of the surface of the stack of the heat exchange plates and defines with the shut-off part of the stack and with the housing a front-end space communicating with the hot air duct and in the second position the gate uncovers the whole surface of the stack of the heat exchange plates to shut off the hot air duct, a rear-end space being provided in the housing which communicates with the cool air duct when its gate is in the open position and with the hot air
REFERENCES:
patent: 3670808 (1972-06-01), Walt, Jr.
patent: 4081025 (1978-03-01), Donaldson
patent: 4262738 (1981-04-01), Kato et al.
patent: 4383642 (1983-05-01), Sumikawa et al.
patent: 4520863 (1985-06-01), Andres et al.
patent: 4874036 (1989-10-01), Masuda
Ford John
Zaporozhsky Avtomobilny ZaVod "Kommunar" (Proizvodstvennoe Objed
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