Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Pressure-controlling method of sterilizing kettle in sterilization cooling stage

A technology of pressure control and sterilization, which is applied in the fields of food science, food preservation, and application, can solve the problems of large instantaneous pressure drop, increased heat exchange area, and increased heat exchange efficiency. The effect of high yield and prolonged cooling time

Active Publication Date: 2010-06-30
CHENGDU XIWANG FOOD
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the moment when the circulating pump is turned on, due to the increase in temperature difference between gas and liquid, the heat exchange area increases, the heat exchange efficiency increases greatly, and the pressure drop in the sterilization tank is large instantaneously, which can be reduced from 0.25MPa to 0.13MPa Regardless of whether manual, semi-automatic or automatic control methods are used to supplement the pressure in the sterilizer by injecting high-pressure air before the circulation pump is turned on, the pressure drop formed at the moment the circulation pump is turned on cannot be compensated, and the bag burst rate of plastic flexible packaging products is relatively high. , so the existing sterilizers are suitable for narrow product series, which seriously limits its application in the field of plastic soft packaging food

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] The pressure control method in the sterilizing and cooling stage of the retort of the present invention comprises the following steps: 1) opening the air pressure switch and feeding high-pressure air into the retort until the pressure in the retort reaches the initial value; 2) feeding cooling water into the retort 3) Turn on the air pressure switch to continuously feed compressed air into the sterilization tank; the circulation pump is opened according to the pressure gap in the sterilization tank, and the circulation pump is turned on when the pressure in the tank is greater than the set value. Stop the circulation pump when it is less than the set value; 4) After the cooling is completed, empty the cooling water and reduce the pressure in the sterilization tank to atmospheric pressure.

[0012] The continuous opening of the air pressure switch ensures the continuous compensation of the pressure in the sterilization tank; the circulation pump is opened according to the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sterilizing method by adopting a sterilizing kettle, particularly to pressure-controlling method of a sterilizing kettle in sterilization cooling stage, which comprises the following steps of: introducing high-pressure air into the sterilizing tank until the pressure therein reaches the initial value; introducing cooling water into the sterilizing tank until the water level therein reaches the set value; introducing compressed air into the sterilizing tank continuously, opening a circulation pump at intervals according to the pressure in the sterilizing tank, wherein when the pressure in the sterilizing tank is greater than the set value, the circulation pump is opened, and when the pressure in the sterilizing tank is less than the set value, the circulation pump is stopped; when the cooling process is completed, emptying the cooling water, and reducing the sterilizing pressure in the tank to atmospheric pressure. By continuously air-intaking and opening, the pressure in the sterilizing tank can be continuously compensated; the circulation pump is opened at intervals according to the pressure in the sterilizing tank, the cooling operation can be conducted in the premise of ensuring the pressure in the tank, therefore great pressure drop occuring at the moment when the pump is opened for intruductino fo the cooling water and in the temperature dropping process can be effectively prevented. The method can be suitable for the sterilization operations of cans, flexible packages and other types of packaged food.

Description

technical field [0001] The invention relates to a method for sterilizing by using a sterilizer, in particular to a pressure control method in the sterilizing and cooling stage of the sterilizer. Background technique [0002] The sterilizer uses steam with a certain pressure as the heat source, which has the characteristics of large heating area, high thermal efficiency, uniform heating, short boiling time of liquid material, and easy control of heating temperature. It is composed of a sterilization tank, a sterilization tank cover, a track, a sterilization basket and a number of nozzles, equipped with a pressure gauge and a safety valve. It is beautiful in appearance, easy to install, easy to operate, safe and reliable. It is widely used in the field of flexible packaging food. [0003] The sterilization process includes a heating stage, a constant temperature stage, and a cooling stage. In the cooling stage, in addition to controlling the temperature, it is also necessary...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A23L3/02
Inventor 周再勇尹蓉学李琴唐春
Owner CHENGDU XIWANG FOOD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products