The patent technology of this invention is open to the use of the lpm speed module for auto air-conditioning windmills, which uses an operation amplifier and double power mosfet to build analogue circuits with separate electrons to achieve a fully functional lpm wind-dry module, with a dual power mosfet fully attached to the radiator to distribute the double power mosfet work with its own heat, so that it works in a very safe and reliable rated working environment temperature. The rpm module of this patent technology, in addition to the wind speed of the ungraded winder, has an internal vb+ voltage switch control to reduce static consumption currents during silence, thereby preventing loss of car batteries electricity, when the lpm velocity module shuts off internal vb+ voltage at zero wind speed slots, which also includes the main functions of overpressure, heat, limit flow, blockage, short circuit protection, stable and reliable, manufacturing and materials at low cost, and is highly resistant to electromagnetic interference。
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[summary of technical realization steps]
This patent technology applies to auto ac windmills to speed
In particular, it involves a fast-track module for car ac windmill lpm。
Technical presentation
Automobile air-conditioning systems are primarily designed to provide cooling, heating, air-replacement and air-purification devices for indoor air, and are still used in most medium- and low-end car air-conditioning systems in the market for speed-retardation by wind-drivers, more than half of which are speed-retarded by a series of power-retarded fractional pressures, using the size of the barrier in the wind-drill circuit to adjust the voltage to the high- and low-speed-regulating goal. The low-end string has a high resistance value, the middle string has a small resistance value and the high-end is not a bar. While the technique and structure are simple, low-cost and easy to repair, a significant proportion of the power of the power supply is consumed by electrical resistance when the wind-driver works, so that the speed-retarding of its own heat is so large that it must be distributed in a timely manner that, if heat is not spread in time, it can trigger auto-burning. In order to spread the heat of the heat in a timely manner, it is usually installed in air-conditioning tanks immediately next to the wind-drive vent, using the wind-dryer to blow the wind-retard cycle to spread the heat, the wind-breather normally works to stabilize its temperature within a relatively safe range, and if the wind-drive malfunctions (short circuits, break-off of leaves, blockage, carding) lead to a lack of wind or a lack of wind, the temperature of the fast-retort is rapidly rising and may eventually ignite the surrounding plastics. Therefore, there is a need to design a new lpm velocity module for car air conditioners to address the above technical issues。
Technical realization thinking
In view of the above, the purpose of this patent technology is to provide one
Technical protection points
A lpm-modulation module for vehicle air conditioners, which features: a07 from mosfet-driven control unit, r1 from mosfet, vb+ voltage switch unit a01, input control signal conversion unit a02, vb+ and mot-voltage differential amplification unit a03, main mosfet control module a04, overtemperature, pressure protection unit a05, blockage, flow-restriction protection unit a06, from mosfet-driven control unit a07, sample resistance r1, r2 from vcm control panel to vb+ voltage switch unit a01, when vb+ voltage switch unit a01 is received to pwm-controlled signal, vb+ voltage is turned on within the entire lpm-speed module a06; pwm control signal is converted from the input control signal module a02 to linear current voltage control unit a04, and is fed into the main mofset control module a04 when the vb+ voltage switch unit a01 is received to pwcm control signal
Technical profile summary
1. An lpm-referral module for vehicle air conditioners with the following characteristics: mo f, which includes a wind-drenchor, mosfet, a01 from mosfet, vb+ volt switch, a02, vb+ and mot-volt-discretion amplification unit a03, primary mosfet control module a04, temperature, pressure protection unit a05, blockage, limit-reserve module a06, mosft-resistor, r2 from mosf-receive control unit a02 to fl-received from vsm to vb+t-cv05-t05t-txcxa, from vb+t-tx-txcxa, and from tcm-cv-tx-tx-txa, and mxb-tx-tx-txa, and m-tx-m-tx-tx-t-tx, and m-b-tx-tx-t-t-t-m-t-v, and m-b-t-t-t 2. The lpm velocity module for car air-conditioning windmills, as described in claim 1, is characterized by the frequency of the pwm control signal described as 35hz-2000hz. 3. The lpm velocity module for car air conditioners, as described in claim 1, is characterized by the direct current voltage signal referred to as pwm controlled signal *vz baseline voltage. 4. According to claim 1.
[property technical properties]
Technical research and developmenter: jiu, leo-sung, zhao, li xiaoying
Applicant (patent): wuhan oze electronics ltd.
Type: invention
Country and city: hubei; 42
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