Heat Pump Air Conditioning System Electronic Expansion Valve

EXV electronic expansion valves are typically used at the front-end of the evaporator (condenser),EXV electronic expansion valves are one of the core components of air conditioning systems.

Feature and Benefits

Good performance

  • Smaller step angle and higher flow control accuracy
  • Unique stop mechanism for lower running noise

High reliability

  • Durability up to three times the industry standard
  • Using automotive grade electronic components, safe and reliable
  • Multi-dimensional evaluation and validation based on vibration, temperature and humidity

With integrated chip and more compact structure

Software design

  • With layered architecture design, comply with vehicle specifications
  • Precise control of small opening flow based on software compensation
  • Using UDS fault diagnosis processing system
Application

The main function is to throttle and depressurize the medium in the system so that the medium reaches a phase change, so as to carry out cold and hot exchange.

Operate
Basic principle

The suction superheat control system is composed of electronic expansion valve, pressure sensor, temperature sensor, controller, when working, the pressure sensor will evaporator outlet pressure P1, temperature sensor will compressor suction superheat transmission to the controller, the controller will signal processing, and then output instructions to act on the electronic expansion valve, the electronic expansion valve through the control of the stepper motor, the valve to the required position, to ensure the appropriate amount of liquid supply and suitable superheat.

Packaging Options

Custom packaging can be provided to meet any need, please contact KESENS Engineering for details.

Functional Characteristics

ITEMS

PARAMETER

Communication Method LIN2.1

Valve Port Diameter

1~2.5mm
Working Medium R134a,R234yf,R410A;PAG&POE Oil
Ambient Temperature -40℃~+120℃
Temperature Range >-12℃~+80℃
Operating Voltage DC9V~DC16V
Rated Voltage DC12V
Rated Current < 0.35 A
Coil Drive Method Stepper motor
Drive Frequency 100PPS
External Leakage ≤1.5g/y @ 3.5MPa
Internal Leakage ≤100ml/min @ 1.03MPa
Compressive Strength 5.4MPa
Burst Pressure ≥10.6MPa
Insulation Resistance ≥10MΩ @ DC500V
Degree Of Protection IP69
Lifetimes >200k cycles
Open Valve Pulse 38±15p