SU1659241A1 - Heat generation control system for autonomous heaters - Google Patents

Abstract

The invention relates to the automotive industry, namely to autonomous heaters designed to heat the air supplied to the vehicle interior, as well as to other areas of technology where it is necessary to use an autonomous heater. The purpose of the invention is to expand the range of adjustment of heat output during continuous operation of the heater. The heater contains an electric motor 5, a fan 6, a supercharger 7. a metering fuel pump 17. An electronic unit 19 is connected to the heater operation switching device 21 connected by an electrical circuit to the pump 17 and the electric motor 5, and an electronic unit 19 is connected. transistor generators, each loaded to the electric motor 5 and the pump 17, respectively, so that when the signal from the regulator 20 is applied to the block 19, the latter simultaneously changes the frequency of rotation of the electric motor shaft frequency of pump strokes, the motor shaft rotation frequency and frequency of pulses of the metering pump are respectively forward and reverse, depending on the resistance value regulating modes torus. 1 hp f-ly, 2 ill. j ё

Description

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The invention relates to the automotive industry, namely to autonomous heaters designed to heat the air supplied to the vehicle interior, as well as to other areas of technology where it is necessary to use an autonomous heater.

The purpose of the invention is to expand the range of adjustment of the heat output during continuous operation of the heater.

Fig. 1 shows a heating installation and an adjustment device, a longitudinal section: Fig. 2 is a wiring diagram of an electronic control unit.

The heating installation (Fig. 1) contains a casing .1 inside which is placed a heat exchanger 2 with a combustion chamber 3 and a sleeve 4. The heat exchanger has an electric motor 5, on the shaft of which a fan 6 is fixed to supply air for heating and a blower 7 to supply air to combustion. A thermal switch 8 with a change-over contact 9 is installed on the casing. A spark plug 10 with resistance 11 is installed in the sleeve 4. The control lamp 12 is connected to the spark plug circuit, and the thermal switch has terminals 13 and 14. The heat exchanger is equipped with a combustion air connection 15 and the exhaust fitting 16. The fuel metering pump 17 is connected to the sleeve 4 by a pipe 18. The electric motor 5 and the pump 17 are electrically connected to an electronic unit 19, to which mode controller 20 and the associated mode switching device 21 are connected you exchanger with a contact 22. The slider block 19 (Figure 2) consists of a master oscillator transistor 23 is electrically bonded to the motor generator 24 and a similar, associated with the metering pump, the master oscillator produces a pulse on output amplifier stages 25 and 26, respectively.

Cascade 25 is loaded onto electric motor 5, and cascade 26 to pump 17. Mode regulator 20 is a set of series-connected resistors (resistance box) 27 and 28, switched by a single driver 29 and connected respectively to generators 23 and 24.

Heating installation works as follows.

When the slider 22 of the switch 21 is moved to the position, the voltage is supplied to the resistor magazine 27 of the regulator 20, the generator 23 of the block 19 and the spark plug 10 via the thermal switch 8 (change-over contact 9), and the lamp 12 lights up.

The electric motor 5 begins to rotate with the supercharger 7, which supplies air to the combustion chamber 3. At the same time, the ignition plug 10 is heated. After warming up

candles slider 22 is set to position II. In addition, the voltage goes to the resistor store 28 and the generator 24. The pump 17 comes into operation. The fuel is supplied to the sleeve 4, where it is ignited by the candle 10. When the heater warms up, the change-over contact 9 of the thermal switch 8 moves from terminal 13 to terminal 14, turns off the candle, the lamp goes out, and the heater works offline. Wherein

the control system (generators 23 and 24, resistance box 27 and-28, and the electric motor 5 and the metering pump 17 connected to them) are adjusted so that each frequency of rotation of the electric motor

a certain frequency of the pump strokes corresponds so that in the combustion chamber of the heater in all modes the optimum fuel-air mixture is maintained. The change in heating output of the heater, i.e. the transition from one mode of operation to another is performed by the driver 29 of the regulator 20. In this case, the resistance of shops 27 and 28 changes, as a result of which the duty cycle of output pulses, i.e. the ratio of the follow-up period to the pulse duration. As a result, the rotational speed of the motor and the corresponding frequency of the pump strokes are simultaneously changed.

When installing, instead of stores 27 and 28, resistors with a movable slider, infinitely adjustable heating performance of the heater can be implemented. The heating installation can be started on any of its operating modes due to the fact that an optimum air-fuel mixture is ensured in all operating modes.

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Claims (2)

1. A heat regulation system for an autonomous heating installation comprising a heater with an electric motor, a supercharger and a metering fuel pump, as well as an electrically connected heater switching device, characterized in that, in order to extend the range of heat output control with continuous operation of the heater, it is equipped with an electronic unit including a mode controller associated with two master transistor generators, one of which is moat electrically connected to the electric motor and the other to the fuel pump. 20 2. The system of claim 1, wherein the mode controller includes a set of resistances connected in series with each other. 77 25 -19 --23 figure 2.