CN2142681Y - Mess-tin heating device of positive temp. coefficient ceramic semi-conductor - Google Patents

Abstract

The utility model discloses a dining box heating device of positive temperature coefficient ceramic semiconductors, belonging to a food-warming device. The dining box heating device of positive temperature coefficient ceramic semi-conductors comprises a box body and a seat, the box body is added with an upper cover, and the inner part of the seat is provided with a positive temperature coefficient semiconductor heating plate; the two sides of the heating plates are fixed with electric conduction electrode plates, and the two electrode plates are led out by conducting wires; the lower side of the lower electrode plate is provided with a magnetic supporter, the upper side of the upper electrode plate is provided with an insulating pad, and the upper side of the insulating pad is provided with an aluminum alloy sheet; when the dining box is placed on the box body, the foodstuff inside the dining box can be heated by powering up. The utility model has the advantages of simple structure, low cost, and simple manufacture; the temperature can be adjusted, and the dining box heating device of positive temperature coefficient ceramic semiconductors is suitable for the foodstuff heating in the room or in the field.

Description

Mess-tin heating device of positive temp. coefficient ceramic semi-conductor

The utility model belongs to a kind of foods heat unit.Being suitable for heating normal food uses.

The general staff goes to work to have dinner noon mostly to adopt and carries food at present, special field work, the underground labour does not have the specific place of heated food, when having dinner, use the lunch box of metal aluminum cutlery box-different shape, generally be all aluminum metal and make, its advantage is that making is used simply, cost is low, easy to carry, but its deficiency is not have heater, the outside boiling method of general employing takes heated food, in the open air or do not having the cooking stove place, heating inconvenience, giving has dinner makes troubles.

For solving above deficiency, the purpose of this utility model provides a kind of cutlery box heater, and this device adopts positive temperature coefficient ceramic semiconductor heating plate, is fixed together with the cutlery box heater, plug in and just can heat, effectively solved the problem of food heating when having dinner to food.

Structural design of the present utility model is achieved in that the cutlery box heater is made up of box body and base two parts, box body top is the loam cake that has handle, below box body is base, in base, be provided with heating plate, can put 4～6 positive temperature coefficient semiconductor heating plates under the heating plate, be added with conductive plate (thermolysis of holding concurrently) in the heating plate both sides, again two-plate is drawn with lead respectively, directly peg graft on the indoor mains supply, the base side is added with power switch, is placed with porcelain piece support below conductive plate, is added with felt pad on conductive plate, it above the felt pad aluminium alloy plate, be the bottom panel of box body, during use cutlery box (aluminium or plastic lunch box) put into box body, buckle loam cake, add power supply, in box body, can keep 60～90 ℃ temperature.

The advantage of the utility model, simple in structure, make easily, safe in utilization, be fit to generally to use at indoor or open-air local heating box at power supply.

Structure of the present utility model is provided by following examples and accompanying drawing.

Fig. 1 is a positive temperature coefficient ceramic semiconductor cutlery box heater scantling plan;

Fig. 2 is a positive temperature coefficient ceramic semiconductor cutlery box heater base schematic diagram;

Fig. 3 is a positive temperature coefficient ceramic semiconductor cutlery box heater cut-away view;

Fig. 4 is positive temperature coefficient ceramic semiconductor cutlery box heater circuit figure.

Its structure is shown in Fig. 1～4, cutlery box heater (1) is a box body, (2) be base, box body top is added with band handle loam cake (3), positive temperature coefficient semiconductor heating plate (4) is housed in base (2), porcelain piece base (5) (6) is arranged below the heating plate (4), supports insulative frame (7) (8) is arranged above the heating plate (4), it above the insulating frame aluminium alloy plate (9), controlling is the bottom surface of box body, be provided with power switch (12) in the base side, semiconductor heating plate (4) concrete structure as shown in Figure 3, (10) partly lead heating plate for positive temperature coefficient ceramic, be placed with conductive plate (11) in heating plate (10) both sides, simultaneously heating plate and pole plate are fixed, again heating plate conductive plate and coupling lead are drawn, directly link on the indoor power supply through the power switch of base side.

Claims (2)

1, a kind of positive temperature coefficient ceramic semiconductor cutlery box heater, it is characterized in that heater is made up of box body (1) and base (2) two parts, it on box body (1) loam cake (3) that has handle, below box body (1) is base (2), in base (2), be provided with positive temperature coefficient ceramic semiconductor heating plate (4), can put 4～6 positive temperature coefficient ceramic semiconductor heating plates (10) in the heating plate (4), heating plate (10) both sides are added with conductive plate (11), two-plate (11) is drawn with lead respectively, directly be plugged on the mains supply.

2, by the described cutlery box heater of claim 1, it is characterized in that being placed with two magnetic supports (5) (6) below the interior heating plate of base (2) (4), be placed with felt pad (7) (8) above the heating plate (4), above the felt pad (7) (8) is aluminium alloy plate (9), controls to be box body (1) bottom surface.

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