JPS58139814A - Control method of blower motor for vehicle - Google Patents

Abstract

PURPOSE:To contrive an improvement of durability of a blower motor and energy saving, by so constituting that a speed of a blower motor is controlled by controlling voltage of the blower motor by atmospheric ram pressure to be applied to the blower motor during running at high speed. CONSTITUTION:During running at high speed, atmospheric ram pressure to be squeezed into a blower motor 1 is detected by a ram pressure detecting sensor 5, and a speed of the blower motor 1 is controlled by applying a detected signal to brake circuit 7 through an amplifying circuit 6. With this energy saving operation of the blower motor 1 is performed effectively and durability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling a vehicle blower motor, and includes a ram pressure detection sensor suitable for controlling the voltage applied to the blower motor, particularly during high-speed running, and an amplifier circuit for processing this signal. The present invention relates to a vehicle blower motor equipped with a control circuit.

Conventional vehicle blower motor control methods are based on battery voltage,
and is determined by a resistor installed between the battery and the propeller motor. Furthermore, the speed of a program motor, which has a certain organic relationship with the heated armpit inside the vehicle, is controlled on the platform of the vehicle equipped with the automatic empty vI4 device. However, there is no method for controlling the speed of a skeleton propeller motor that has an organic relationship with the ram pressure applied to the propeller motor during high-speed running.

When running at high speed, when ram pressure is applied to the blower motor, the air volume of the blower motor increases. However, this increase in air volume has little effect on the air conditioning inside the vehicle. Furthermore, the addition of ram pressure also increases the current consumption of the blower motor, resulting in wasted energy consumption. Furthermore, an increase in the current of the blower motor accelerates wear of the plasticine and commutator, and also causes problems such as abnormal noise and a decrease in the durability of the blower motor.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above. That is, when running at high speed, a sensor is provided to detect the ram pressure of outside air applied to the blower motor, and the signal from the sensor is amplified by an amplifier circuit, and the blower motor voltage control circuit controls the speed of the blower motor appropriately. The current consumption of the blower motor can be reduced, allowing energy-saving operation of the blower motor. Furthermore, since power consumption is reduced, wear of the plow motor, commutator, etc. can be reduced, and the durability of the plow motor can be improved.

In the present invention, the increase in air volume of the blower motor due to fast running is
It has no effect on the air conditioning of the vehicle interior, and the energy consumed by the propeller motor accounts for a large portion of the total energy consumed by the vehicle. Reducing the energy consumed by the propeller motor during high-speed driving also reduces the total energy consumed by the vehicle. Furthermore, suppressing the current of the blower motor improves durability and increases the product value of the blower motor.

An embodiment of the present invention will be described with reference to the drawings. In a vehicle blower motor composed of a blower motor 1, an intake case 2, and an inside/outside air switching door 3, when driving at high speed, the ram pressure of the outside air sucked into the blower motor 1 increases with the vehicle speed as shown in Fig. 2, and the outside air It is pushed into the suction port.

As a result, as shown in FIG. 3, the air volume increases as shown by the solid line. However, this increase in air volume has little effect on air conditioning within a room. Moreover, the increase in motor current consumption at this time accelerates wear of the brush blade, commutator, etc. of the blower motor 1, and the blower motor l
This will reduce the durability of the product. The present invention has been proposed in view of the above points, and the ram pressure of the outside air pushed into the blower motor 1 during high-speed running is detected by the ram pressure detection sensor 5 installed at the outside air inlet number 1, and this signal is detected. The amplification circuit 6 to amplify and the signal from the amplification circuit once! ! A blower motor! By configuring the control circuit 7 for O-speed longitudinal control, effective energy-saving operation and improved durability of the blower motor can be achieved.

In one embodiment of the present invention, only a method of controlling the blower motor that has an organic relationship with the ram pressure will be described. A control method for a connected vehicle propeller motor is also possible.

According to the present invention, since the speed of the blower motor can be changed according to the ram pressure, it is possible to operate the blower motor in an energy-saving manner and further improve the durability.

[Brief explanation of drawings]

Fig. 1 is a block diagram for explaining the present invention, and Figs. 2 and 3 are supplementary explanations.

Claims (1)

[Claims] 1. A vehicle blower motor consisting of a blower motor, an intake case, an inside/outside air switching door, etc. is equipped with a sensor that detects the ram pressure of outside air that enters from the outside air inlet of the blower motor, an amplifier circuit that processes this signal, and a control circuit. A vehicle blower motor control method characterized by the following.