Control circuit of automobile air conditioner blower

A technology for controlling circuits and blowers, applied in pump control, mechanical equipment, machines/engines, etc., can solve the problems of poor circuit anti-interference, poor circuit portability, easy distortion of PWM waveforms, etc., to achieve good circuit reliability, low cost, Low delay and distortion filtering effect

Active Publication Date: 2019-01-29
YANFENG VISTEON ELECTRONICS TECH (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a control circuit for an automobile air-conditioning blower, which effectively solves technical problems such as easy distortion of the PWM waveform, poor circuit anti-interference performance, and poor circuit portability in the control circuit of the prior art.

Method used

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  • Control circuit of automobile air conditioner blower
  • Control circuit of automobile air conditioner blower

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Embodiment Construction

[0017] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present invention. It should be understood that while the invention has been described in connection with preferred specific embodiments thereof, these embodiments are intended to illustrate, not limit, the scope of the invention.

[0018] Such as figure 1 As shown in the figure, a control circuit of an automobile air-conditioning blower is shown in the figure, including:

[0019] A processor CPU for outputting PWM signals with different duty ratios;

[0020] A blower load circuit module Rc, including a linear power module LPM, a blower M and a DC power supply S, the linear power module LPM controls the speed of the blower according to the PWM signal;

[0021] A PWM port T1, connected to the processor CPU, for obtaining the PWM signal;

[0022] A blower contr...

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PUM

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Abstract

The invention relates to a control circuit for a car air conditioner air blower. The control circuit comprises a processor, an air blower load circuit module, a PWM port T1, an air blower control port T2, an IOC port T3, a first audion Q1 and a second audion Q2. The air blower control port is grounded through a resistor R3, the IOC port is connected with the air blower control port through a resistor R4, the air blower control port is grounded through a capacitor C1, and the IOC port is grounded through a capacitor C2. By means of the control circuit, the circuit structure is simple, the cost is low, and the transportability is good; the sensibility to the temperature is low, the PWM signal delay and distortion filter is small, and the anti-jamming capability is high; self protection can be achieved under the voltage surge, and the circuit reliability is good.

Description

technical field [0001] This product relates to a circuit structure for an automobile air conditioner, in particular to a control circuit for an automobile air conditioner blower. Background technique [0002] Vehicle air conditioning system is a necessary equipment for every car, mainly including condenser, evaporator, blower and other components. Among them, the blower is mainly used to discharge the hot air on the condenser and blow the cool air on the evaporator into the car, which is an important part of the air conditioning system. Customers have higher and higher design requirements for the blower control circuit. For example, the control circuit must realize the different speed requirements of the blower; the signal transmission and conversion realized by the control circuit must not have large distortion; the control circuit must be able to Self-diagnosis and protection, not to be damaged and so on. Therefore, the blower control circuit needs continuous improvement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D27/00
CPCF04D27/00
Inventor 梅燕张庆薇
Owner YANFENG VISTEON ELECTRONICS TECH (SHANGHAI) CO LTD
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