CN2215249Y - Two-purpose electric pot for stewing and boiling with two electric heating wires - Google Patents

Abstract

The utility model adopts the structure that two electric heating wires which are of high and low power and respectively form a concentric ring shape are cast on the existing dish-shaped aluminium alloy furnace disk, wherein the electric heating wires are connected in series outside the furnace disk, and a switch (8) for switching stewing and boiling functions and a temperature control switch (7) which automatically switches power in stewing and boiling processes are added to a circuit. The improved furnace disk and the circuit can automatically change heating power according to different stewing and boiling requirements so as to realize the double purposes of increasing the functions of the electric pot and saving electricity.

Description

Two-purpose electric pot for stewing and boiling with two electric heating wires

The utility model relates to family expenses electric cooker (pot) and regulates power, increases to stew and boil the device of function.

Electric cooker in the market is the electric furnace pan of single heating wire, single power, be mainly used in and cook, it can not be reasonably regulates heating power by the variations in temperature and the caloric requirement of cooking and stew when boiling, thereby can not reduce power when water boils the available small-power heating in back in pot and cause waste of energy.For this reason, some electric cooker has been put devices such as diode, controllable silicon at heating stone or metal plate for standing a stove on as a precaution against fire peripheral hardware and has been regulated power.It is more that cost is raise, and reliability reduces.The utility model purpose be in existing electric cooker stone or metal plate for standing a stove on as a precaution against fire, increase be cast into a small power electric heated filament (＜150W), make common electric cooker increase coddle and boil function.Method is simple, with low cost, can economize on electricity again.

The concrete enforcement of patent is: (seeing accompanying drawing 1) is cast into two heating wire (small power electric heated filament＜150W that power one is big, a little one-tenth concentric ring is arranged in the electric cooker stone or metal plate for standing a stove on as a precaution against fire, the quartz sand insulation), make it to become the novel stone or metal plate for standing a stove on as a precaution against fire of double electrothermal filament, two power, two heating wire are connected in series outside stone or metal plate for standing a stove on as a precaution against fire.Stewing, boil function with 1 * 2 switch (8) in the circuit selects, switching to small-power with temp control switch (7) control circuit when preceding 95～98 ℃ of the water boiling heats, make the heat of generation be slightly larger than the radiation loss of electric cooker, " slow fire " that can keep water in the pot to be in slight boiling condition is stewed to boil and is got final product.Indicator lamp 9, indicator lamp 10 are done large and small power heating and are shown.Electric cooker behind improved double electrothermal filament's stone or metal plate for standing a stove on as a precaution against fire and circuit become have an automatic transform power ability stew, boil dual-purpose pot, reach the dual purpose that increases function and saves energy.Other partly remains unchanged electric cooker substantially, and reliability is identical with former electric cooker.

Be described further below in conjunction with accompanying drawing: Fig. 1 is a circuit diagram, numbers in Fig. 1: 1, be double electrothermal filament's stone or metal plate for standing a stove on as a precaution against fire; 2,103 ℃ of limit temperature (magnetic) switches; 3, main heating wire; 4, small power electric heated filament; 5, main end element conneccting; 6, small-power end element conneccting; 7, temp control switch; 8,1 * 2 function change-over switch (being arranged in panel); 9, indicator lamp; 10, indicator lamp; 11, dropping resistor; 12, shunt resistance.

With Fig. 1 circuit explanation operation principle.When functional switch (8) contact point 1, be original circuit of cooking automatically.The plug that plugs in is pressed temperature limit switch (2) back circuit and is connected.Electric current is through functional switch (8) → temperature limit switch (2) → main heating wire (3) and indicator lamp (9), resistance (the 11) → power supply other end.Indicator lamp (9) is lighted and is shown the energising heating.Rice, coolant-temperature gage raise and seethe with excitement in pot, and after rice imbibition a period of time, the rice of bossing at first raises because of the dried temperature of water at the bottom of the electric cooker, when reaching 103 ℃ of temperature limit switch (2) break-off signal, switch (2) disconnecting circuit stops heating, by the stewing ripe rice of stone or metal plate for standing a stove on as a precaution against fire accumulation of heat.

When functional switch (8) contact point 2, boil circuit for stewing.Source current constitutes electric loop through functional switch (8) → normally closed temperature detect switch (TDS) (7) → main heating wire (3), indicator lamp (9), resistance (11) → power supply other end.Heating wire (3) heating with full power, indicator lamp (9) is lighted demonstration.When water temperature in the pot will be boiled near 95～98 ℃ of boiling points, being located at (bimetal leaf) temperature detect switch (TDS) (7) that gives setting under the stone or metal plate for standing a stove on as a precaution against fire disconnects, switch and seal in small power electric heated filament (4), shunt resistance (12), indicator lamp (10), whole heating power is dropped to＜150W, be in " slow fire " and stew and to boil.Indicator lamp (10) is lighted and is shown that small-power is stewed and boil.Temperature keeps constant after water temperature continues to be elevated to boiling point, and the heat that this moment, required heat (power) only need be slightly larger than the electric cooker radiation loss can be kept the slight boiling condition of pot interior water, and the realization coddle boils, thus saves energy and improve the stew quality.Be located at the temperature detect switch (TDS) (7) under the stone or metal plate for standing a stove on as a precaution against fire because stone or metal plate for standing a stove on as a precaution against fire is big to pot body heat transferring area, temperature difference △ t during intensification on each temperature spot is metastable, thereby can be used for before water boils in the control pot switching 2-5 ℃ the time and seal in small power electric heated filament (4) and carry out coddle and boil.Reliable operation and stablizing.Stew the time of boiling by artificial or timer control, after food is ripe, cut off the electricity supply.

The appearance structure of electric cooker, element, production technology need not changed.

Claims (1)

1. A kind of novel double electrothermal filament, stewing of two power stone or metal plate for standing a stove on as a precaution against fires, boil dual-purpose electric cooker (pot), it is characterized by: it is big to be cast with power one in the butterfly aluminium alloy stone or metal plate for standing a stove on as a precaution against fire, two heating wire of one little one-tenth concentric ring and stone or metal plate for standing a stove on as a precaution against fire insulation, joint is connected in series outside stone or metal plate for standing a stove on as a precaution against fire, newly-increased element is: small power electric heated filament (4), temperature detect switch (TDS) (7) and 1 * 2 functional select switch (8), small power electric heated filament (4) and indicator lamp (10), shunt resistance (12) serial connection back is in parallel with temperature detect switch (TDS) (7), parallel circuit tail end (6) is connected with main heating wire (3), again with the power supply other end connect and compose electric loop thereafter, temperature detect switch (TDS) (7) is located under the electric furnace pan, and functional switch (8) is located on the panel.

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