The ventilation and heating system serves tocreating a comfortable climate for the driver and passengers inside the car. With it, we, being inside the car, can breathe fresh air and maintain the necessary temperature.
In this article we will look at how it works. heating and ventilation system VAZ-2107. We will deal with the peculiarities of its design, major faults and methods for their elimination.
Heating system VAZ-2107 integrated into the engine cooling system.The heating of the air entering the passenger compartment takes place in the process of heat exchange of the refrigerant, which is carried out using an additional radiator. It consists of the following elements:
The main element of the system is the heater, or as it is also called, “stove”. Its design includes:
In fact, the heater is the real “stove”.The upper part of its body is equipped with an adjustable air intake lid. Through it, the outside air enters the "stove". Inside the case there is a heater radiator through which the heated coolant (antifreeze or antifreeze) moves.
By itself, heated air cannot entersalon with the necessary pressure, even during fast driving. For its injection serves as a fan with an electric drive (engine). It is also located inside the heater body. The fan of "sevens" can work in three different power modes.
Heating system VAZ-2107 controlled by a special module located in the bottom of the dashboard. Its design includes three levers and a heater fan mode switch.
The topmost lever provides controlcrane "stove". In the leftmost position, it is closed, and the coolant moves around the heating radiator. If you move the switch all the way to the right, the refrigerant will begin to flow into it fully, heating the air to the maximum.
The middle lever allows you to close-openair inlet cover. In the left position, it will be completely closed, and the outside air will not be able to enter the cabin. The lid will open fully when we move the switch to the far left position.
Heating system VAZ-2107 provides for the distribution of air flowfor blowing wind and front side windows. It is carried out with the help of the lower arm. In the right position the air is directed to the side windows, in the left - to the windscreen.
The heater valve, the air intake lid, and the dampers that redirect air flows are driven by cables.
The fan mode switch is located to the left of the control levers. It has four positions in which the fan:
Air ducts are used to transport warm (cold) air to the windscreen and side windows. There are only three of them:
Each of the air ducts representsplastic "sleeve" of a certain shape. At one end they are attached to the body of the heater, the second - to the corresponding nozzle. In order to reduce air loss during transmission, the connections are sealed with rubber cuffs.
A nozzle, or deflector, is a device through which air enters directly into the cabin. Heating system VAZ-2107 includes four deflectors:left, two central and right. A feature of the nozzle design is a mechanism that allows changing the position of the lamellae inside it, redirecting the air flow from side to side, as well as blocking it altogether.
Having studied device heating system VAZ-2107It is easy to understand how it functions.So, the air through the grill on the hood of the car and the air intake lid enters the heater body. There, depending on the temperature of the coolant and the position of the valve “stove”, it warms up to a certain temperature, and moves further along the air ducts through the deflectors into the cabin. The intensity of the air flow depends on the speed of the machine (with the fan turned off), or on the position of the fan mode switch. By changing the position of the lower control arm and the position of the lamellae in the nozzles, we direct the warm air where we need it — to the windshield, to the side windows, or to the center of the cabin.
Heating system VAZ-2107 (injector) no different from the one that was equippedold carburetor "sevens". Their designs and principle of operation are absolutely identical. Radiators, their cranes, electric fans and all other elements are interchangeable. Only thing than heating system VAZ-2107 (carburetor) may differ, it is the material of manufacture of the radiator "stove". The old "sevens" they were made of copper.
Despite the simplicity of the design, heating system VAZ-2107 fails often enough. Its most vulnerable places are:
Crane heater "Seven", like allClassic VAZ breaks most often. Its most popular malfunction is a leak caused by depressurization of the body. Solve a similar problem by replacing parts. Repair of the crane in most cases is impossible.
Еще одной распространенной поломкой является open cable drive. To replace it, it is necessary to dismantle the faucet, because it is impossible to get to fastening it from the side of the locking device without removing it. You should also monitor the tension of the cable. If it is allowed to sag, the valve will not open fully.
As for the fan, then call itreliable can not be. It usually fails with the onset of cold weather. The cause of a motor failure, at best, is worn bearings or brushes, at worst, an open or short circuit in the windings. Correct the situation can repair the motor or its replacement.
У радиатора отопителя также две «болезни»:flow and clogging. The first malfunction can be caused either by mechanical damage or by chemical processes. Today, radiators are made of aluminum alloy, which is not particularly resistant to technical fluids. And if the old copper radiators could still be soldered, then modern ones can only be replaced.
Heat exchanger clogging also occurs inthe result of chemical processes. Scale gradually settles on the walls of the tubes of the device and over time limits the normal circulation of coolant. This leads to the fact that the air injected into the cabin does not warm up to the desired temperature. It is possible to get rid of a similar problem by washing the radiator with special liquids, in the extreme case, by replacing the device.
