counter pressure retort autoclave for food with vacuum packaging film anti inflation bag

LS-35LD, LS-50LD, LS-75LD, LS-100LD, LS-120LD, LS-150LD counter pressure sterilizer is  microcomputer-program -controlled,which is adopts electric heating method. The water is directly injected into the sterilization chamber to heat, and generates the high-pressure steam required for sterilization purpose. After the sterilization is finished, the compressed air is externally supplied for proceed the cooling for 3 minutes, the temperature inside would lower 30~40℃. The sterilizer is designed to perform both boiling sterilization and rapid cooling pressure sterilization. The boiling range is set at ≤100 °C. The rapid cooling pressure sterilization range temperature is pre-selected from 105 ° C to 134 ° C. The heating tubes are provided with overload protection ,and the buzzer would  alarm to indicate the sterilizing end. It is easy to operate, safe and reliable, which is suitable for disinfection and sterilization of food packaging and utensils, equipment and other items and especially suitable applying in food research institutes for sterility testing.

Normal working conditions

1)Ambient temperature  +5℃~+40℃

2)Relative humidity ≤85%RH

3)Atmospheric pressure 70kPa~106 kPa

4)power supply:  AC220V±22V,50Hz±1Hz(all the grounding wires should

meet the requirement.

5)water resource pressure:  0.15 ~0. 2 5MPa

6)aire resure pressure:  0.24 MPa

Shipment and storage conditions:

1)Ambient temperature: -10~50℃

2)Relative humidity: 10%~90%

3)Atmospheric pressure range: 50~106kpa

The sterilizer is equipped with safety valve, which would automatically release while the pressure exceed 0.25mpa, and the power supply would directly be cut off while the temperature exceed 140 ℃. And also with over-current loading protection, safe and reliable.   

2  BASIC PARAMETER

Table 1 basic parameter

3  CHARACTERISTICS

a) Equipped with a pressure/temperature controller, the pressure setting range is 0.07 to 0.22MPa (corresponding to a saturated steam temperature of 115 to 134°C).

b) Equipped with safety valve, by the sterilizing pressure exceed the allowable figure, which would release the pressure automatically.

c) Equipped with immersed heating tube, with anti-dry function, while the water is in low level, the unit would cut off the power to stop the heating and alarm.

4  CONSTRUCTION

1. Inlet faucet 2. Tighten bolts 3. Handle 4. Control panel 5. breaker switch 6. Air inlet 7. Power cord

8. exhaust port 9. water outlet 10. safety valve 11. nameplate

                                   (Pic 1  CONSTRUCTION)

5  WORKING PRINCIPLE  

This product is designed for two kinds of disinfection and sterilization:. Direct heating to produces pressured steam. Then the pressure steam acts on the microorganisms to destroy its structure then achieve sterilization purposes. For the rapid cooling and sterilization procedure, firstly injected 6 liters tap water into the chamber, and then heat for about 25 minutes to proceed the sterilization and at the meanwhile the temperature inside in maintained. The sterilization time is 35-40 minutes. After the completion, 0.24MPa-compressed air is manually injected into the chamber, and then the drain valve is 1/2 opened for drainage, for those soft packages are counter pressured cooled. Quickly cooling for 3 minutes, manually turn off the entering of the compressed air and tap water, the temperature of the objects in the chamber can be lowered to 30 ~ 40 °C.