CN201840291U

CN201840291U - Porridge cooking circuit of electric cooker

Info

Publication number: CN201840291U
Application number: CN201020271207XU
Authority: CN
Inventors: 林毅; 龚圆杰
Original assignee: Midea Group
Current assignee: Midea Group Co Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2011-05-25
Anticipated expiration: 2020-07-23

Abstract

The utility model relates to a congee cooking circuit of electric rice cooker, including heating tube W, limit temperature switch K1 and function selection switch K3, insert the power, its characterized in that after function selection switch K3 and heating tube W, limit temperature switch K1 establish ties: the heating tube W is a single tube, and two ends of the function selection switch K3 are respectively connected with a temperature control switch K2 and a voltage division resistor R3 in parallel. The utility model discloses utilize temperature detect switch K2 to control the expert of single heat-emitting pipe W, cut off the power supply to the perception that electric rice cooker boiled congee in-process temperature, make food keep little firepower boiling state and do not spill over to the realization is boiled the congee function, both reduced the manufacturing cost of product, reduced fault rate and maintenance rate again.

Description

A kind of circuit of cooking congee of electric cooker

Technical field

The utility model relates to electric cooker, and particularly a kind of circuit of cooking congee of electric cooker belongs to the improvement of electric cooker technology.

Background technology

Market has the electric cooker product now, when realizing gruel boiling function, the general electric hot tray that has small one and large one two power electrothermal tube heating that adopts, respond to vapor (steam) temperature by the temperature switch that the electric cooker loam cake is provided with, when rice water seethes with excitement in pot body, the temperature switch control circuit cuts off the large power, electrically heat pipe, realizes little firepower boiling, thereby guarantees that not having thin rice gruel to overflow in the process of cooking congee reaches the purpose that realizes gruel boiling function.Its shortcoming has two aspects: first is two-tube electric hot tray cost height; Second then is because the electric hot tray assembly has two heat-generating pipes, and its probability that produces fault is the twice of single-shot heat pipe electric hot tray, market maintenance rate height.

The utility model content

The purpose of this utility model is to consider the problems referred to above and a kind of circuit of cooking congee that adopts the single-shot heat pipe, reduces the electric cooker of electrothermal tube cost and breakdown maintenance rate is provided.

The technical scheme that realizes the utility model purpose is: a kind of circuit of cooking congee of electric cooker, comprise heat-generating pipe W, temperature limit switch K1 and functional select switch K3, power supply is inserted in functional select switch K3 and heat-generating pipe W, temperature limit switch K1 series connection back, it is characterized in that: heat-generating pipe W is a single tube, and functional select switch K3 two ends also are connected in parallel to temperature detect switch (TDS) K2 and divider resistance R3 respectively.

Above-mentioned temperature detect switch (TDS) K2 is the closed type switch.

The abrupt temp point of above-mentioned temperature detect switch (TDS) K2 is preferably below 10 ℃ with the temperature difference of reset temperature point.

The series circuit of the two ends of above-mentioned functions selector switch K3 and heat-generating pipe W series circuit and relay indicating light L2 and divider resistance R2 is connected in parallel.

The series circuit of the two ends of above-mentioned temperature limit switch K1 and end-of-job indicator lamp L1 and divider resistance R1 is connected in parallel.

The utility model utilize temperature detect switch (TDS) K2 to electric cooker the cook congee perception of temperature in the process control the switching of single-shot heat pipe W, make food keep little firepower fluidized state and do not overflow, thereby the realization gruel boiling function had both reduced the manufacturing cost of product, reduced fault rate and maintenance rate again.

Description of drawings

Fig. 1 is the structural representation of the electric cooker of employing the utility model embodiment;

Fig. 2 is the longitudinal profile schematic diagram of Fig. 1;

Fig. 3 is the structure vertical view of the insulation seat board of electric cooker among Fig. 1;

Fig. 4 is the circuit theory diagrams of the utility model embodiment.

The specific embodiment

As shown in Figures 1 to 4, adopted the electric cooker of present embodiment circuit to comprise loam cake 1, pot body 2, place the interior pot 3 in pot body 2, internal pot 3 heating plates that heat 4 and place heating plate 4 centers, the magnet steel 5 that has temperature limit switch K1, heating plate 4 inside only are provided with a heat-generating pipe W, loam cake 1 be provided with interior pot 3 in the insulation seat board 11 that directly contacts of the steam that produces, insulation seat board 11 is provided with steam through hole 12, temperature controller 6 fixedly is assemblied on the insulation seat board 11, and be close to the insulation seat board 11, the temperature that is used for perception insulation seat board 11, temperature controller 6 is realized logical by the inner bimetal plate temperature controling switch K2 that is provided with, disconnected action, the reset temperature point when abrupt temp point when having disconnection and connection.Pot body 2 lateral surfaces are provided with and make things convenient for the user to select to cook or selector button 7 that gruel boiling function is used, are used for controlling the action of functional select switch K3.

The concrete connection of present embodiment circuit is as follows: functional select switch K3 two ends are in parallel with temperature detect switch (TDS) K2, divider resistance R3 respectively, connect with heat-generating pipe W, temperature limit switch K1 successively then, insert power supply, in parallel after relay indicating light L2 connects with divider resistance R2 with functional select switch K3 and heat-generating pipe W two ends, in parallel after end-of-job indicator lamp L1 connects with divider resistance R1 with temperature limit switch K1 two ends.Wherein functional select switch K3 and temperature detect switch (TDS) K2 are the closed type switch.

Generally, the closed conducting of functional select switch K3, functional select switch K3, heating plate W, temperature limit switch K1 and power supply form the loop, and by the duty of temperature limit switch K1 control heat-generating pipe W, control circuit is in the rice-cooking function state.When temperature limit switch K1 connected, the work of cooking began, and relay indicating light L2 is bright; When temperature limit switch K1 disconnects, the end-of-job of cooking, L1 is bright for the end-of-job indicator lamp.

When the user disconnects functional select switch K3 by select button 7, circuit is in the gruel boiling function state, this moment temperature detect switch (TDS) K2, divider resistance R3, heat-generating pipe W, temperature limit switch K1 and power supply form the loop, control the duty of heat-generating pipe W jointly by temperature limit switch K1 and temperature detect switch (TDS) K2, specific as follows: as to connect temperature limit switch K1, the work of cooking congee begins, relay indicating light L2 is bright, heat-generating pipe W heating, the temperature of food begins to rise in the interior pot 3, the temperature of insulation seat board 11 rises thereupon, after producing boiling in the interior pot 3, when the temperature of temperature detect switch (TDS) K2 perception insulation seat board 11 reaches abrupt temp point, temperature detect switch (TDS) K2 disconnects, heat-generating pipe W connects with divider resistance R3, because the resistance value of divider resistance R3 is far longer than the resistance value of heat-generating pipe, heat-generating pipe W does not heat; After heat-generating pipe W stopped heating, temperature began to descend in the interior pot 3, and the temperature of insulation seat board 11 also descends thereupon, when the temperature of temperature detect switch (TDS) K2 perception insulation seat board 11 is reduced to reset temperature point, temperature detect switch (TDS) K2 is closed again to be connected, and W connects with heat-generating pipe, and heat-generating pipe W restarts heating.So go round and begin again, the heating action by temperature detect switch (TDS) K2 controls heat-generating pipe W makes the food in the interior pot 3 maintain the state of a little firepower boiling, thereby realizes cooking congee.

In order to prevent under above-mentioned little firepower fluidized state, heat-generating pipe W heat time heating time is long to cause the problem of overflowing, and the temperature difference of the special abrupt temp point of setting temperature detect switch (TDS) K2 and reset temperature point is very little in the present embodiment electric cooker, is below 10 ℃.

For behind the end-of-job of realizing cooking, cook congee to the insulation of food, the heating plate of the insulation usefulness that also can be connected in parallel at the two ends of end-of-job indicator lamp L1 and divider resistance R1 series circuit, the power of heating plate is much smaller than the power of heat-generating pipe W.Behind the end-of-job of cooking, cook congee, temperature limit switch K1 disconnects, heating plate is connected with heat-generating pipe W, because the resistance value of heating plate is far longer than the resistance value of heat-generating pipe W, the supply voltage of the heating plate two ends carrying overwhelming majority, relay indicating light L2 goes out, and circuit enters keeping warm mode, this moment, end-of-job indicator lamp L1 was the insulation indicator lamp, and was in bright state.

Claims

1. the circuit of cooking congee of an electric cooker, comprise heat-generating pipe W, temperature limit switch K1 and functional select switch K3, power supply is inserted in functional select switch K3 and heat-generating pipe W, temperature limit switch K1 series connection back, it is characterized in that, heat-generating pipe W is a single tube, and functional select switch K3 two ends also are connected in parallel to temperature detect switch (TDS) K2 and divider resistance R3 respectively.

2. according to the circuit of cooking congee of the described electric cooker of claim 1, it is characterized in that temperature detect switch (TDS) K2 is the closed type switch.

3. according to the circuit of cooking congee of the described electric cooker of claim 2, it is characterized in that the abrupt temp point of temperature detect switch (TDS) K2 is preferably below 10 ℃ with the temperature difference of reset temperature point.

4. according to the circuit of cooking congee of the arbitrary described electric cooker of claim 1 to 3, it is characterized in that: the two ends of functional select switch K3 and heat-generating pipe W series circuit and the series circuit of relay indicating light L2 and divider resistance R2 are connected in parallel.

5. according to the circuit of cooking congee of the described electric cooker of claim 4, it is characterized in that: the series circuit of the two ends of temperature limit switch K1 and end-of-job indicator lamp L1 and divider resistance R1 is connected in parallel.