CN2059816U

CN2059816U - Electrothermal ceramic or glass cooking-vessel

Info

Publication number: CN2059816U
Application number: CN 89219436
Authority: CN
Inventors: 何善文; 韦儒存; 谢渡建
Original assignee: HUAYUAN ELECTROTHERMIC APPARATUS FACTORY GUANGZHOU CITY
Current assignee: HUAYUAN ELECTROTHERMIC APPARATUS FACTORY GUANGZHOU CITY
Priority date: 1989-11-10
Filing date: 1989-11-10
Publication date: 1990-08-01

Abstract

The utility model relates to an electric heating system cooking utensil whose inner pot is ceramic or vitreous. The bottom face of the inner pot and the heating pan of the utility model are plane structures to form direct contact heat transmission. Meanwhile, a two-stage automatic temperature control apparatus provided with main and auxiliary temperature controllers is adopted. The utility model is a ceramic or glass electric heating cooking utensil with higher heat efficiency and greater power, and the ceramic or glass electric heating cooking utensil whose inner pot can be separated is suited to cook.

Description

Electrothermal ceramic or glass cooking-vessel

The utility model belongs to the architecture advances of electric-heating cooking utensil.

Adopt the electric-heating cooking utensil of pot in the pottery or the nature of glass,, liked by people owing to more meet the requirement of health protection and health, but the thermal characteristics of pottery and glass is poor, for avoiding a pot body to cross thermal spalling, adopt the thermal-radiating mode of heating of low-power usually, as " electricity watt support ".This class electric cooking appliance except that the thermal efficiency is low, owing to can only adopt the low-power heating, generally below 300 watts, is unsuitable for doing electric heating cooking utensils such as electric cooker.

Pot adopts direct contact heat transfer with heating board to the utility model in a kind of pottery or the nature of glass for the shortcoming that solves above-mentioned prior art proposes, but and the pottery of split or nature of glass electric heating cooking utensil.

Further purpose of the present utility model provides a kind of have pottery or nature of glass electric cooker more high-power and that can be suitable for cooking.

Structure of the present utility model comprises pot, heating board in pottery or the nature of glass, has the electric heating system of temperature regulating device and shell etc.The main feature of its invention is that the bottom of a pan and the heating board face (contact-making surface in the heating board and the bottom of a pan) of pot in the pottery or the nature of glass adopts planar structure, the bottom of a pan, plane and plane heating board mask have enough flatness, plane contact cooperates can to guarantee to form closely between the bottom of a pan, plane and the plane heating board face, and heating board is passed to pot in the pottery or the nature of glass by the mode of direct contact heat transfer with heat.And should can from whole cooking apparatus, separate taking-up at any time easily by interior pot.

For make contact between the bottom of a pan, plane and the plane heating board face good, should make pottery or vitreous in the fineness of pot plane, the bottom of a pan and heating board face exist

More than the level.And can elastic bearing be set in the bottom of heating board, said elastic bearing can be one or several spring assemblies that balance is arranged on the heating board bottom.

For the plane, the bottom of a pan that makes pot in the said pottery has enough flatness and fineness, and the desired uniformity of product is arranged, the utility model adopts plane, the bottom of a pan pot in the pottery that grinding was handled, the grinding processing is carried out in plane, the bottom of a pan unification of pot in the pottery that is about to bake, thereby reaches the uniformity in flatness and fineness.

The utility model also according to the thermal characteristics of pot in the pottery or the nature of glass, and adopts a kind of electric heating temperature regulating device with major and minor thermostat, makes its requirement that can adapt to cook (as electric cooker) and can work under big heating power.Its secondary thermostat can make pottery or temperature of the interior end of nature of glass pot reach 90-100 ℃, and main thermostat can make pottery or temperature of the interior end of nature of glass pot reach predetermined cooking temp (102～104 ℃), and major and minor thermostat is formed the two-stage automatic temp controller.Major and minor thermostat jointly controls the heating board of this electric heating cooking utensil earlier with the internally pot heating of bigger power during work, when the interior the bottom of a pan reaches 90-100 ℃, secondary thermostat action, reduce the heating power of heating board, the electric heating cooking utensil continues to carry out work with less heating power, when the interior pot the bottom of a pan reached predetermined cooking temp (102-104 ℃), the power supply to heating board was cut off in main thermostat action.

This electric heating temperature regulating device can adopt multiple circuit arrangement, scheme is that electric heating system adopts ghyristor circuit to regulate input power preferably, be serially connected in the silicon controlled circuits for triggering after the major and minor thermostat parallel connection, here main thermostat can adopt the PTC temperature-sensitive element, and secondary thermostat can adopt ferrite temperature control switch.

The bottom of a pan face of pot and heating board face in the utility model pottery or the nature of glass are owing to all adopt the planar structure with enough flatness and fineness closely to contact cooperation, form direct contact heat transfer, and the heating board bottom has elastic bearing, in strengthening pot and heating board be close to, thereby temperature-sensitive efficient is higher, and the split of interior pot is convenient.The utility model is also owing to adopt the two-stage temperature-controlling system, during cooking food, can adopt high-power heating before the Yu Shuikai, at this moment heating power reaches kilowatt, pot in the pottery (or the interior pot of the nature of glass) also can bear, when water in the pot leaves or opens (reaching 90 ℃-100 ℃) near water, secondary thermostat produces the temperature control action, reduction system heating power, generally can drop to below 200 watts, at this moment interior pot is opened until reaching cooking temp (ripe as meal), when reaching 102-104 ℃ owing to thermal inertia can continue to keep water under small-power, main thermostat produces the temperature control action, stops internally pot heat supply.This meets the universal law and the requirement of cooking food, and adapts to the heat-resistant quality of pot in the pottery or the nature of glass, makes the possibility that creates that meets high-power pottery that culinary art requires or nature of glass automatic electric heating cooking utensil.

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

Fig. 2 is the temperature regulating device circuit diagram.

Below in conjunction with the auspicious details of stating present embodiment of accompanying drawing.

This ceramic electric cooker comprises pot (2) in pot cover (1), the pottery, pot shell (3), heating board (4), spring-loaded (6) and temperature regulating device etc., it is R that heating board (4) lining is sealed with its load resistance value of heater (5), the spring-loaded that the bottom of heating board is provided with by three balances, the bottom and the heating board face of interior pot are planar structure, and the bottom of interior pot can fit tightly with the heating board face.The electric heating system of electric cooker adopts the bidirectional thyristor for regulating voltage circuit to adjust heating power, in this regulating circuit, control by the branch position switch (7) that is contained in panel by variable resistor W(), capacitor C and bilateral diode 2CTS form the circuits for triggering of bidirectional triode thyristor 3CTS, and the main thermostat of electric cooker adopts PTC temperature-sensitive element T ₁, secondary thermostat adopts ferrite temperature control switch T ₂, main thermostat T ₁Resistance R is regulated in series connection one ₁Back and secondary thermostat T ₂Parallel connection is connected above-mentioned parallel circuit one end then with variable resistor W in the bidirectional triode thyristor circuits for triggering, the other end is received the tie point of load R and bidirectional triode thyristor second electrode.Secondary thermostat T ₂The temperature sensing hole of temperature detector by the heating board center directly be attached to the centre of pot bottom in the pottery, main thermostat T ₁Temperature detector then be close to suitable heating position on the heating board, during electric cooker work, close a switch (this switch junctions is combined in the branch position switch (7)) connects secondary thermostat T ₂Switch (8), at this moment W and C form the RC loop of bilateral diode circuits for triggering, adjust the resistance of W, can make 2CTS produce trigger impulse, make bidirectional triode thyristor 3TCS be in fully conducting state, electric cooker heating with full power (power is decided by load resistance R, can more than 400 watts).When kettle temperature reaches 100 ℃, secondary thermostat T ₂Action, its temperature control switch disconnects, at this moment by R ₁, PTC temperature-sensitive element (main thermostat T ₁), W and C form the RC loop of the circuits for triggering of bilateral diode, because resistance increases, make the trigger impulse phase shift, reduced the angle of flow of 3CTS, reduce the power of supplying with heater R, design drops to heating power below 200 watts, at this moment electric cooker works under small-power until reaching 103 ℃ of predetermined cooking temps, corresponding temperature on its heating board sharply rises the resistance value of PTC temperature-sensitive element by TEMP, bidirectional triode thyristor 3CTS is turn-offed fully, circuit stops the process of cooking is finished in the heater power supply.

Claims

1, a kind of pottery or nature of glass electric cooker cooking apparatus, electric cooker particularly, comprise pot, heating board in the pottery or the nature of glass, have electric heating system, shell of temperature regulating device etc., the bottom of a pan and the heating board face that it is characterized in that pot in the pottery or the nature of glass are planar structure, the bottom of heating board has spring-loaded, and the bottom of a pan, plane forms tight plane contact with plane heating board face and cooperates.

2, by the described electric heating cooking utensil of claim 1, the elastic bearing that it is characterized in that said heating board is one or several spring assemblies that balance is arranged on the heating bottom.

3,, it is characterized in that the plane, the bottom of a pan of pot in the said pottery or the nature of glass and the fineness of heating board face all exist by the described electric heating cooking utensil of claim 1

More than the level.

4, by the described electric heating cooking utensil of claim 1, it is characterized in that described electric heating temperature regulating device comprise the cooking bottom temperature that can make pot in pottery or the nature of glass reach 90-100 ℃ secondary thermostat and can make pottery or the nature of glass in the pot of pot end temperature reach the main thermostat of predetermined cooking temp (102-104 ℃), major and minor thermostat constitutes the two-stage automatic temp controller.

5, by claim 1 or 5 described electric heating cooking utensils, it is characterized in that electric heating system adopts silicon-controlled voltage regulation circuit adjustment heating power, secondary thermostat adopts ferrite temperature control switch, main thermostat adopts the PTC temperature-sensitive element, is serially connected in the silicon controlled circuits for triggering after main thermostat and the secondary thermostat parallel connection.