CN102589145A

CN102589145A - Electric water heater circuit with pasteurization function

Info

Publication number: CN102589145A
Application number: CN2012100821466A
Authority: CN
Inventors: 李宏光; 程月波; 白艳梅
Original assignee: Ludong University
Current assignee: Ludong University
Priority date: 2012-03-27
Filing date: 2012-03-27
Publication date: 2012-07-18

Abstract

The invention discloses an electric water heater circuit with a pasteurization function, which comprises a power circuit, a heater circuit controlled by a relay J1 and a sterilization and disinfection circuit controlled by the relay J1 and a relay J2. The disinfection principle is as follows: heating liquid from normal temperature to 80 DEG C at a rate of at least 0.5 DEG C/min, then cooling the liquid rapidly to 40 DEG C at a rate of at least -0.5 DEG C/min, and then reheating the liquid. Therefore, the purpose of sterilization and disinfection can be achieved through performing such heating and cooling processes twice.

Description

A kind of electric heater circuit with pasteurize sterilizing function

Technical field

The present invention relates to the sterilizing field, say so more specifically, relate to a kind of electric heater circuit with pasteurize sterilizing function.

Background technology

In actual life, water heater is in order to economize on water with energy-conservation, at ordinary times temperature generally can not transfer too high, so its inside is easy to breed bacteria.Like water dispenser used in the daily life, its inner heating water-storing device often is in the normal temperature state, will inevitably grow a lot of bacteriums, drinks after the pasteurization sterilization as not carrying out, and human body is easy to receive the influence of bacterium and causes sick.Therefore it is very necessary designing a kind of chlorination equipment that can pasteurization.

Summary of the invention

In order to overcome the deficiency of prior art; Further improve the function of existing electric heater; The present invention improves on original patent basis, and having used the patent No. is the method for 03814382.8 " pasteurization that is used for microbial cell and microbial oil ", and this sterilization ratio juris is: the speed with at least 0.5 degrees celsius/minute is heated to 80 degrees centigrade to liquid from normal temperature; With the speed of degrees celsius/minute at least-0.5 it is cooled to 40 degrees centigrade rapidly again; Then carry out post bake again,, reach the purpose of sterilizing through twice such heating and cooling process.

The objective of the invention is to realize through following technical scheme.

A kind of electric heater circuit with pasteurize sterilizing function of the present invention comprises the sterilizing circuit of heater circuit, relay J 1 and the J2 control of 1 control of power circuit, relay J.

Described power circuit has two parts: the one, and the AC power part of 220V directly is the heating installation power supply of electric heater; Another be the 220V alternating current through transformer B step-down, the rectifier circuit that constitutes via the N4007 diode again, the dc source part that forms behind the rc filter circuit that constitutes via resistance R 0 and capacitor C 0 again is the The whole control circuit supply.

The heater circuit of described relay J 1 control; Constitute its latching circuit by automatic reset switch SB1 and normally opened contact K13 thereof; Another normally opened contact K11 of relay J 1 directly links to each other with the AC power live wire; The end of while with the heater of electric heater links to each other, and the other end of heater is then directly linked the zero line of AC power, thereby realizes the heater circuit by reset switch SB1 control.

The sterilizing circuit of described relay J 1, J2 control constitutes its latching circuit by automatic reset switch SB2 and normally opened contact K21 thereof, the bridge circuit that the termination of automatic reset switch SB2 is made up of resistance R 1, R2, R5, copper thermistor; The parallel connection of copper thermistor two ends inserts the signal input pin 2 and 3 of operational amplifier A D620; The signal output pin 6 of operational amplifier A D620 is connected on the signal input pin 2 and 6 of the Schmidt trigger that is made up of NE555, and the height of controlling NE555 output signal changes; The signal output pin 3 of the Schmidt trigger that is made up of NE555 links to each other with 2 binary subtracters that are made up of the CD4013 double D trigger, connects control relay J1 simultaneously; The signal output part of 2 binary subtracters that are made up of the CD4013 double D trigger connect with the coil of relay J 2 through a triode T, thus the pasteurize sterilisation circuit that realization is controlled by automatic reset switch SB2.

Description of drawings

Fig. 1 circuit theory diagrams of the present invention.

The working timing figure of Fig. 2 sterilizing of the present invention.

The specific embodiment

As shown in Figure 1, press the button SB1, control loop K13 forms self-locking, and relay coil J1 gets electric, and K11 is closed, and heating circuit is closed, and in this process, refrigerating circuit is in off-state always.

As shown in Figure 1, press the button SB2,, AD620 do not reach the upper limit threshold voltage 2/3Vcc of the Schmidt trigger that constitutes by NE555 after amplifying through the voltage signal of electric bridge generation; The Schmidt trigger that is made up of NE555 is output as high level, and CD4013 does not trigger, its 13 pin output high level; The coil of relay J 1 and J2 all gets electric, closed self-locking, the K11 closure of forming of K21; Heater begins heating, and K12 breaks off, and refrigerating circuit is broken off.When temperature rose to 80 degrees centigrade, the output of the Schmidt trigger that is made up of NE555 became low level, J2 still electric, and relay J 1 power down.K11 breaks off heating circuit is broken off, and K12, K23 closure make refrigerating circuit closed, and semiconductor refrigeration material begins refrigeration; When temperature dropped to 40 degrees centigrade, the voltage signal after AD620 amplifies just reached the lower threshold voltage 1/3Vcc of the Schmidt trigger that is made up of NE555, and the output of the Schmidt trigger that is made up of NE555 becomes high level; Relay J 1 once more electric, cold and hot kettle gets into the post bake state, heating for the second time and refrigeration finish; The output of CD4013 becomes low level; Relay J 2 power down, K21, K23 all break off, and pasteurization finishes.

Claims

1. electric heater circuit with pasteurize sterilizing function comprises the sterilizing circuit of heater circuit, relay J 1 and the J2 control of power circuit, relay J 1 control;

It is characterized in that:

Described power circuit has two parts: the one, and the AC power part of 220V directly is the heating installation power supply of electric heater; Another be the 220V alternating current through transformer B step-down, the rectifier circuit that constitutes via the N4007 diode again, the dc source that forms behind the rc filter circuit that constitutes via resistance R 0 and capacitor C 0 again is the The whole control circuit supply;

The heater circuit of described relay J 1 control; Constitute its latching circuit by automatic reset switch SB1 and normally opened contact K13 thereof; Another normally opened contact K11 of relay J 1 directly links to each other with the AC power zero line; The end of while with the heater of electric heater links to each other, and the other end of heater is then directly linked the zero line of AC power, thereby realizes the heater circuit by reset switch SB1 control;