CN204208442U - A kind of air dryer for vehicle with humidity control apparatus - Google Patents

Abstract

The utility model proposes a kind of air dryer for vehicle with humidity control apparatus, its technological core is: be provided with humidity sensor, be arranged on exhaust passage, one-chip computer carries out according to Humidity Detection value the time interval regulating cleaning and regeneration, second magnetic valve is as the pilot-actuated valve of draining valve, be switched on or switched off the gas passage between air accumulator and draining valve, the break-make of moisture signal to the second magnetic valve that one-chip computer detects according to humidity sensor controls.The utility model is detected by humidity sensor, the humidity of display air accumulator, in real time cleaning and regeneration is carried out to the drier in drying, drier lost efficacy, report to the police in real time, improve precision and the reliability of adjustment, reduce air accumulator compressed air range of pressure fluctuations, also can ensure to brake cylinder tight gas supply without the need to balanced valve.The utility model structure is simple, low cost of manufacture, control accuracy are high, and reliable operation, has broad prospect of application.

Description

A kind of air dryer for vehicle with humidity control apparatus

Technical field

The utility model relates to a kind of air dryer for vehicle with humidity control apparatus, belongs to technical field of automobile parts.

Background technology

On motorbus or most of cargo vehicle, usually using the power source of compressed air as service brake, steadily safe and effective for ensureing braking procedure, compressed air is except possessing certain pressure, also require that compressed air keeps certain cleannes and drier, therefore, filtration drying process must be carried out to compressed air, for air oxygen detrition degree, can evaluate by humidity, humidity value is lower, illustrate that drying effect is better, from satisfied application and economic angle, air humidity after process remains in certain scope all right, such as keep humidity range between 45-65%, in order to reach such target, regulable control will be carried out to drying device, control method is exactly regularly carry out cleaning and regeneration to filtration drying cylinder, once humidity exceeds applicable, explanation functions/drying declines, by the cleaning and regeneration to drier, it is made to recover functions/drying, the later drier of cleaning and regeneration still can not meet functions/drying, illustrate that drier lost efficacy, need to change drier.Existing air dryer for vehicle adjusting device is not that cleaning and regeneration completed according to the solid mechanical cycle, therefore according to the humidity of air as foundation.Existing air dryer for vehicle adjusting device Problems existing precisely to regulate, and degree of regulation is low, and reservoir pressure fluctuation range is large, and at reservoir outlet, place arranges balanced valve, and guarantee is to brake cylinder tight gas supply.

Summary of the invention

The utility model proposes kind of an air dryer for vehicle for band humidity control apparatus, the precision and reliability that regulate can be improved, reduce air accumulator compressed air range of pressure fluctuations, also can ensure to brake cylinder tight gas supply without the need to balanced valve.

For this reason, the technical solution of the utility model is: a kind of air dryer for vehicle with humidity control apparatus, comprise drying, base, draining valve, the first magnetic valve, the first relay, pressure sensor, interface circuit, display and one-chip computer, drying, draining valve, the first magnetic valve, relay are all fixed on base, humidity sensor, air inlet one end connects outside air pressure pump, and the other end leads to drying, and the dried gas of drying cylinder enters air accumulator through exhaust outlet;

Pressure sensor is arranged on exhaust passage, and output signal through interface circuit access one-chip computer, pressure sensor ensures that reservoir pressure when cleaning is not less than setting value; First magnetic valve is switched on or switched off the gas passage between air accumulator and drying, completes the cleaning and regeneration of drying, and the pressure signal that one-chip computer detects according to pressure sensor is controlled by the break-make of the first relay to the first magnetic valve;

it is characterized in that:also comprise humidity sensor, humidity sensor is arranged on exhaust passage, output signal through interface circuit access one-chip computer, output signal through interface circuit access one-chip computer, one-chip computer carries out according to Humidity Detection value the time interval regulating cleaning and regeneration, second magnetic valve is as the pilot-actuated valve of draining valve, be switched on or switched off the gas passage between air accumulator and draining valve, the moisture signal that one-chip computer detects according to humidity sensor is controlled by the break-make of the second relay to the second magnetic valve.

Beneficial effect: the utility model is detected by humidity sensor, the humidity of display air accumulator, in real time cleaning and regeneration is carried out to the drier in drying, drier lost efficacy, report to the police in real time, pressure sensor detects, the pressure of display air accumulator, improve precision and the reliability of adjustment, reduce air accumulator compressed air range of pressure fluctuations, also can ensure to brake cylinder tight gas supply without the need to balanced valve.The utility model structure is simple, low cost of manufacture, control accuracy are high, and reliable operation, has broad prospect of application.

Accompanying drawing explanation

Accompanying drawing 1 is the air dryer for vehicle structural representation of the utility model band humidity control apparatus.

Accompanying drawing 2 is air dryer for vehicle electric control theory figure of the utility model band humidity control apparatus.

Detailed description of the invention

By reference to the accompanying drawings 1, it is as follows that accompanying drawing 2 further describes the utility model: a kind of air dryer for vehicle with humidity control apparatus, comprise drying 3, base 6, draining valve 4, first magnetic valve 7 and the second magnetic valve 8, first relay 9, pressure sensor 10, humidity sensor 11, interface circuit 12, display 13, one-chip computer 14, second relay 15, drying 3, draining valve 4, first magnetic valve 7, second magnetic valve 8, one 9 relay, second relay 15 is all fixed on base, air inlet 5 one end connects outside air pressure pump, the other end leads to drying 3, the dried gas of drying cylinder enters air accumulator through exhaust outlet 1, pressure sensor 10, humidity sensor 11 are from air accumulator Information Monitoring, the current pressure of air accumulator and humidity value is shown after one-chip computer 14 analyzing and processing, when humidity value reaches upper control limit (65%), send instruction and control the first magnetic valve 7 and the second magnetic valve 8 action, the compressed air of air accumulator, to be communicated with the plunger shaft A of draining valve through exhaust passage P and to open draining valve 4, by the break-make of solenoid control gas circuit, realize the open and close of draining valve, meanwhile, the Partial shrinkage air of air accumulator, through the backflow of B mouth, carries out cleaning and regeneration to drier, when cleaning and regeneration still can not ensure that compressed-air actuated aridity meets the demands, provides the alarm signal changing drier, shown in Fig. 1, wherein base 6 is installation foundation, and C mouth setting pressure sensor 10, D mouth installs humidity sensor 11.

Claims (1)

1. the air dryer for vehicle with humidity control apparatus, comprise drying, base, draining valve, the first magnetic valve, the first relay, pressure sensor, interface circuit, display and one-chip computer, drying, draining valve, the first magnetic valve, relay are all fixed on base, humidity sensor, air inlet one end connects outside air pressure pump, the other end leads to drying, and the dried gas of drying cylinder enters air accumulator through exhaust outlet;

Pressure sensor is arranged on exhaust passage, and output signal through interface circuit access one-chip computer, pressure sensor ensures that reservoir pressure when cleaning is not less than setting value; First magnetic valve is switched on or switched off the gas passage between air accumulator and drying, completes the cleaning and regeneration of drying, and the pressure signal that one-chip computer detects according to pressure sensor is controlled by the break-make of the first relay to the first magnetic valve;

it is characterized in that:also comprise humidity sensor, humidity sensor is arranged on exhaust passage, output signal through interface circuit access one-chip computer, output signal through interface circuit access one-chip computer, one-chip computer carries out according to Humidity Detection value the time interval regulating cleaning and regeneration, second magnetic valve is as the pilot-actuated valve of draining valve, be switched on or switched off the gas passage between air accumulator and draining valve, the moisture signal that one-chip computer detects according to humidity sensor is controlled by the break-make of the second relay to the second magnetic valve.