CN2065863U

CN2065863U - Energy-saving electric cooker with electronic brain timing

Info

Publication number: CN2065863U
Application number: CN 90203693
Authority: CN
Inventors: 陈凤玉
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-03-30
Filing date: 1990-03-30
Publication date: 1990-11-21

Abstract

The utility model relates to providing a novel electric cooker to users which adopts an electronic clock as the timer of the electric cooker and can optionally timedly cook within 24 hours every day. The utility model uses PTC element and NE555 as a temperature controller and can prevent overflowing the electric cooker through using the automatic regulation of electric power and save electric energy.

Description

Energy-saving electric cooker with electronic brain timing

The utility model relates to a kind of novel electric cooker.

Present popular automatic thermal insulation electric rice cooker on the market because not free controlling organization, so the user After Hours can in time have a dinner as thinking morning or noon, burned before just must or going to work morning meal at overnight, be incubated then.Meal taste through long-term insulation is poor, and expense electricity (insulation also needs electricity consumption), will cook congee as the user, then must someone guard by pot, with the anti-Spill stopping pan of timely Switching Power Supply.

The purpose of this utility model is that modern electronic technology is applied on the electric cooker, and novel electric cooker can regularly be cooked by user's wish (when selecting arbitrarily in 24 hours, being accurate to branch), can adjust input voltage automatically when cooking congee, in case Spill stopping pan.

The purpose of this utility model is achieved in that pan structure sees (Fig. 1, Fig. 2), among the figure 1, pot cover, 2, interior pot, 3, computer regularly, the temperature controller shell, 4, digital display screen, 5, the control button, 6, indicator lamp, 7, temperature limiter, 8, the pot crust, 9, the bottom of a pan, 10, supply socket, 11, circuit board, 12, temperature sensor, 13, power transformer, 14, heat-generating disc, as seen in Fig., be equipped with one on the outer pot skin of this electric cooker by shell (3), machine time, the time that temperature control circuit board (11) is formed, temperature controller.The responsive part that a temperature sensor (12), sensor are housed in the inboard of outer pot skin contacts with interior pot.Time, on the front panel of temperature controller, control button (5) is housed, indicator lamp (6), and digital display screen, the user can be according to the requirement of oneself, the manipulation operating key is adjusted and is cooked, give the time of putting and timing, time numerical value can be shown by the digital screen that is contained on the control panel, in the control circuit of electric cooker, the working time of a digital clock IC in order to the control electric cooker is housed, other is equipped with deblocking temperature control integrated circuit, and the input power in order to the control electric cooker is equipped with two relay (J in electric cooker heat-generating disc circuit ₁, J ₂), a diode D9 is housed, they control the all-wave energising of heat-generating disc respectively, half-wave energising, and relay.

Computer circuits operation principle of the present utility model (seeing accompanying drawing 3), ON-OFF control circuit is partly formed by two, by extensive clock circuit LM8560(TM3450), the control of transistor 3D * 201 and relay J 1 makeup time partly, form temperature control circuit by time base circuit NE555, PTC element and relay J 2.

Behind power connection, depress temperature limiter K switch A, KA closure, J1-1 does not arrive because of preset time, is in normally open, and J2-1 is in cold state resistance value very little (about 50 Ω) because of the PTC element.It is high potential that NE5552 pin current potential is lower than three of supply voltage/one 3 pin, the J2 adhesive, the J2-1 closure, this moment heat-generating disc RI two ends no-voltage, electric cooker is in waiting state, when preset time one arrives.16, the 17 pin output high potential of LM8560, BG1 conducting, J1 adhesive.The J1-1 closure, RI gets electrical heating, when kettle temperature reached 100 ℃, the PTC resistance is anxious to be occupied and strengthens (because of the curie point design of PTC at 100 ℃.This moment, resistance can reach 3K Ω) the anxious residence of NE5552 pin, 6 pin current potentials raise, when 6 pin current potentials be higher than supply voltage 2/3rds the time 3 pin be electronegative potential, J2 discharges, J2-1 disconnects, this moment, RI can only be by diode D9 power supply.Supply waveform is a half-wave, output power reduces half, this moment, kettle temperature just maintained fluidized state, being equivalent to little fire cooks rice over a slow fire, such one is to have saved electric energy, the 2nd, the pot that can not overflow (comprise and cooking congee and soup non-overflow pan all), the 3rd, food mouthfeels such as the meal that boils, meat are significantly better than common automatic thermal insulation electric rice cooker.

Owing to there has been the every meal of timing circuit user can be the time preset of cooking with before the meal half an hour, so need not be incubated, every meal can both be had fresh meal.The electricity consumption situation contrast of computer timing energy-saving electric cooker and automatic heat preserving formula electric cooker sees the following form:

Claims

1, the utility model is a kind of electric cooker that adopts microelectric technique to control cook time and duty, it is characterized in that:

(1) on the outer pot skin of electric cooker, be equipped with one by shell (3), the time that circuit board (11) is formed, temperature controller, (2) are equipped with a temperature sensor (12) in the inboard of outer pot skin, and the responsive part of sensor contacts with interior pot (2).

2, electric cooker as claimed in claim 1 is characterized in that: on the front panel of time-temperature controller digital display screen is housed.

3, as claim 1,2 described electric cookers, it is characterized in that: four control buttons, (5) are housed on the front panel of time, temperature controller.

4, as claim 1,2,3.Described electric cooker is characterized in that: (1) is equipped with a digital clock IC in the control circuit of electric cooker, and (2) are equipped with deblocking temperature control integrated package in the control circuit of electric cooker.

5, as claim 1,2,3,4, described electric cooker is characterized in that, (1) is connected to a diode (D9) in the heat-generating disc circuit, and (2) are connected to two relay (J in the heat-generating disc circuit ₁J ₂).