Dishwashers

Bitron is a leading manufacturer of a wide range of products used for dishwashers.
Applications include water control (solenoid valves and safety systems, water softeners and back-flow prevention devices), detergent and rinse-aid dispensers, switches and sensors as well as a comprehensive range of electronic main control-boards, motor drives and user interfaces.
We are available for the development of customized solutions.

 

Inlet, diverter and safety valves

Description

Water inlet and safety valves control the water flow into an appliance. Bitron has become the leading solenoid valve supplier to the worldwide appliance market and supplies domestic, professional and industrial markets. Typical valves for dishwashers are single outlet type
Bitron safety valves can be single or double valves in series, as well as double hose to detect hose leakages leaving the hose water pressure relieved during off time. 
Bitron motorized diverter valve is electromechanical component specially designed for dishwashers: the functions are to alternate water flow to spray arms during washing program.

Key features: 

  • Safety valves: from 1 to 2 valves,  with protective hose and nut. Electric and pneumatic actuator
  • Operating pressure range: from 0,02Mpa to 1Mpa
  • Power supply: DC or AC, from 12V to 380V
  • Flow regulator: from 0.25 L/min to 20 L/min
  • Electrical connections: Rast 2.5; Rast-5; fast-on 6.3x0.8 mm
  • All major approvals
  • Sensors: flow, temperature
Detergent dispensers

Description

Dispensers of detergent (tablets, powder or liquid) and rinse aid. Rinse aid refilling may be done through a lid or a plug. Customizable aesthetics.

Key features: 

  • Rinse aid volume: from 100 cc to 150 cc
  • Rinse aid dose systems: manual setting (from 1.5 cc to 4.5 cc) or multi shot (up to 6 shots; approx 1-1.5 cc each)
  • Rinse aid level indication: by reed switch and floating  magnet or by optical sensor
  • Detergent chamber capacity: approx. 50 cc
  • Detergent cover opening: pop-up or sliding
  • Electrical connections: Rast 2.5 or Rast 5 standard or individual  fast-on terminals
  • Assembly to the dishwasher inner door: by snap fit system or by screws
  • Voltage supply: mains voltage and low voltage
Air Breaks & Back Flow Prevention Devices

Key features: 

  • Back-flow prevention
  • Pipe interrupter
  • Check valve
  • Type AB air break
  • Heat Exchanger (drying function)
  • Water recovery (reducing water consumption)
  • Flow meter (fill water control)
  • Syphon for drain pump
Water softeners

Description

The water softener remove the hardness, in the form of calcium and magnesium, in the water used in a dishwasher. The inlet water hardness may be up to 90 dH°.

Key features: 

  • A dedicated mixing valve is available for very low incoming hardness
  • Models are produced ranging from simple units with resin and salt tank to models which incorporated the air break and the water inlet control, either volumetric, by flow meter or by pressure sensor
  • We produce also models designed for resin regeneration and rinsing it in the opposite direction to the inlet flow, reducing the consumption of rinsing water and salt minimizing the risk of corrosion of the tub and cutlery
  • The latest models have, as options, the incorporation of an electronic system able to measure the remaining softening capability of the softener, a switching solenoid valve and an overflow sensor

 

Switches and sensors

Description

Bitron produces a wide range of switches and sensors for dishwashers. Special sensors can be developed according to customer requirements.

Key features: 

  • Microswitches: low high activation force
  • Floaters for safety valves and other applications
  • Pressure switches for high and low pressures

Several types of sensors are available for:

  • Position detections: on different conditions and applications
  • Water parameters such as: flow, pressure, level, temperature, conductivity, turbidity, hardness
User interfaces

Description

User Interfaces for freestanding and built-in Dishwashers

Key features

  • Embedded 32-bit microcontroller with TFT/led image database memory
  • TFT/LCD or led module driving
  • RGB led driving incl. Light effects
  • Low-cost customized led modules
  • LCD with icons, digits, full graphics
  • TFT with or without embedded touch
  • Dynamic TFT image management
  • Connectivity WiFi/BLE/NFC embedded
  • Capacitive touch/input interface
  • Single or multi-key functions
  • Water/steam proof touch algorithm
  • Aesthetic panel design and manufacturing
  • Knob, light ring, TFT frame
  • Chrome finishing, soft feel finishing
  • PC film with tampon printing
  • In-mould-decoration
  • Back housing frame for PCBA and HMI front
  • Integrated gasket and sealed cable outlet
Main boards

Description

Main boards for freestanding and built-in dishwashers

Key features: 

  • 32-bit MCU for whole machine management
  • DC load driving (on/off and PWM)
  • AC load driving
  • Motor drive embedded up to 100W rated power 3PH inverter
  • Low standby energy consumption
  • EMI/EMC filter embedded
  • DC sensors management for temperature, turbidity, hardness
  • AC/DC signal inputs for door sensing, digital input and analog sensing
  • Data communication WiFi/BLE/serial
  • HMI/UI/remote boards connections

 

Motor controls

Description

Inverter for dishwasher brushless motor pumps (stand alone or integrated solutions)

Key features: 

  • Efficiency >97% (full load)
  • Synchronous motor (BLAC/BLDC)
  • Discrete or IPM power stage topology
  • Sensorless motor driving algorithm available
  • Embedded EMI/EMC filter for optimal noise rejection compliance
  • Embedded PFC (active or passive) compatible with EN 61000-3-2
  • US, EU, emerging markets or extended  range voltage input
  • Low stand by consumption solutions
  • Plastic housing fitting on machine / or motor shell 
  • Custom heatsink design
  • Thermal management solutions