SU1639992A1 - Ventilation device for transport vehicle cab - Google Patents

Abstract

The invention relates to the field of ventilation and air conditioning and can be used mainly in the cabs of vehicles of cars and trucks, tractors, self-propelled combines, road construction machines. The purpose of the invention is to increase the efficiency of the vehicle cabin ventilation by ensuring the distribution of air through the deflectors and automating the process of controlling the flow of air. A dual-console radial fan is installed at the outlet of the heat exchanger, each impeller of which is divided into two parts 18 and 19. Part 19 is installed. 22 mounted on the electric motor 17 coaxially with cotton 23, the Wheel part 18 is mounted to the hub 2 attached to the spiral casing 27. At the open end of the sleeves there is a coil / 7 FIG. 3

Description

28 and 29 electromagnetic clutches, magnetic discs 30 and 31 are attached to the ends of the carrier disk 20 in the connector, and 5 friction disks 32 and 33 electromagnetic clutches are mounted on the shaft 23. The spiral housing 27 is divided by a partition 34 into two cavities 35 and 36, and each cavity has

additional outlet parallel to the main outlet. These nozzles are connected to the baffles. The inclusion of electromagnetic clutches is carried out automatically through a microprocessor, depending on the parameters of the microclimate in the cabin. 1 hp ff, 5 ill.

The invention relates to ventilation and air conditioning and can be used primarily in the cabs of vehicles — cars and trucks, tractors, self-propelled combines, road-building machines, etc.

The purpose of the invention is to increase the efficiency of the vehicle cabin ventilation by ensuring the distribution of air through the deflectors and automating the process of controlling the flow of air.

FIG. 1 shows the installation of the device in the front of the vehicle cabin, a general view; in fig. 2 - the same, on the roof of the cabin; in fig. 3 — impeller and spiral device casing of the device fan, general view; in fig. 4 is a view A of FIG. 3; in fig. 5 - fan, axonometrics.

The device comprises a heat exchanger 1, a dual console radial fan 2 installed at the outlet of the heat exchanger with a main outlet pipe 3 and additional pipes 4 and 5 displaced from each other by an angle determined by the design and layout conditions of the device. A central deflector 6 is connected to the outlet nozzle 4 for supplying air to the operator's working area, an deflector 7 is supplied with the output nozzle 3 to supply air to the operator's feet, and an deflector 8 is connected to the output nozzle 5 to supply air to the cabin glass. At the entrance to the heat exchanger 1 is installed air intake 9.

When installing the device on the cab roof (Fig. 2). Deflectors 10 are connected to the outlet nozzle 3 to supply air to the working area of the operator, deflectors 11 are connected to the outlet nozzle 4 to supply air to the stack

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The cab and, with the outlet nozzle 5, the deflectors 12 for supplying air to the refrigerator 13, comprising a housing 14, a false ceiling 15 with slots for opening ™ (prior to cooling the airflow in the refrigerator and a pipe 16 connecting the internal cavity of the refrigerator with deflector 11.

On each side of the motor 17 of the fan 2, there is mounted an impeller consisting of two parts 18 and 19 divided by a bearing disk 20, a part of the impeller 19 is movably mounted on bearings 21 on a sleeve 22 attached to the motor 17 coaxially to the shaft 23. Other part the impeller 38 is also mounted movably on the sleeve 24 through bearings 25. The sleeve 24 is attached coaxially to the shaft 23 to the end face 26 of the spiral casing 27. At the open ends of the sleeves 22 and 24, the coils 28 and 29 of the electromagnetic couplings are fixed. At the ends of the carrier disk connector 20, magnetic conductor disks 30 and 31 are fixed, and on the shaft 23 of the electric motor 17 there are mounted friction disks 32 and 33 of electromagnetic clutches. In the spiral casing, a partition 34 is installed, dividing the casing into two cavities 35 and .36, Electrically in 37 and 38 coils of electromagnetic clutches are led outside the fan and connected to an automatic switching unit of the coils (not shown) in the vehicle’s on-board network .

The device works as follows.

The outside air is taken in by the fan 2 through the heat exchanger 1 and is supplied to the cabin through the deflectors 8, 7 and 6 or 10 and 11 when the device is installed on the roof of the cabin. At the same time, depending on the period of the year (warm or cold), vehicle speed, microclimate parameters in the cabin (temperatures, air speeds).

ha) one or other electromagnetic clutches are included in the power supply circuit. During the warm period of the year, when installing the device, for example, in the front part of the cabin and disconnecting the heat exchanger 1 from the air conditioning system, it is necessary to ensure maximum fan performance in order to maintain an acceptable microclimate in the cabin. In this case, the voltage is applied to the coils 28 and 29, and the disks 30 and 31 are pressed against the disks 32 and 33, i.e. all the electromagnetic clutches of the impellers are turned on, and the fan provides the flow of air

spirit more than 1000.

When the heat exchanger 1 is turned on in the air conditioning system, it is necessary to reduce the air flow and feed it only to the operator's working area. In this case, only electromagnetic clutches located in those parts of the impellers that are installed near the electric motor are turned on, and air is only supplied to the cabin through the deflectors 6 and 7. In the cold period of the year when heat exchanger 1 is included in the cooling system of the internal combustion engine and It is used to heat the outside air drawn into the cabin, including electromagnetic clutches - those of the impeller parts, which are located along the edges of the fan. In this case, the heated air enters through the deflectors 7 and 8 for heating the glass of the cabin and the legs of the operator.

When the device is installed on the cab roof during the warm period of the year and the heat exchanger is included in the air conditioning system, a part of the cooled air through pipe 5 and the false ceiling 15 enters the refrigerator 3 to cool the operator’s food products.

From the refrigerator exhaust air through the pipe 16 and the deflector 1 1 enters the cabin,

Turning on and off the electromagnetic clutches of the impellers makes it automatically through the microprocessor which receives signals from the air temperature sensors, cab surfaces of the air velocity sensors. The microprocessor compares the incoming signals with the given parameters

and a signal is given to turn on this or that electromagnetic clutch.

Claims (2)

1. A vehicle cabin ventilation device comprising a heat exchanger mounted at the exit of the heat exchanger a two-console radial fan comprising an electric motor mounted on each side of the electric motor impellers with carrier discs and vanes mounted in spiral housings each provided with inlet and outlet nozzles and is divided into two parts by the internal partition, with the partition covering the bearing disk of the wheel with a gap, and the output nozzle is connected to air distribution manifolds, characterized in that, in order to increase the efficiency of vehicle cabin ventilation by providing air distribution through the deflectors and automating the air flow regulation process, each fan impeller is divided over the carrier disk into two parts with a gap between them, one part of the wheel is movably mounted on a hub mounted coaxially to the motor shaft and attached to its body and the other part of the wheel is movably mounted on an additional hub mounted coaxially to the motor shaft and mounted on the spiral i case on the side opposite to the electric motor, while the magnetic coils are mounted on the open ends of the sleeves, Friction clutch discs are mounted on the motor, with the housing partition mounted in the carrier disc connector and covering the friction discs with a gap, 2. The device according to claim 1, wherein the spiral casing is provided with additional outlet connections that are installed parallel to the main outlet connection and are offset relative to each other. Z.1 g g ttttt Type A