CN2194143Y

CN2194143Y - Thermo-insulating water heater using heat-sensitive ceramic heating sheet

Info

Publication number: CN2194143Y
Application number: CN 94200497
Authority: CN
Inventors: 张中太; 陈少荣; 孙红飞
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 1994-01-21
Filing date: 1994-01-21
Publication date: 1995-04-12
Anticipated expiration: 2004-01-21

Abstract

The utility model discloses a thermo-insulating water heater using thermal sensitive ceramic heating sheets, belonging to the manufacture field of an apparatus for cooking and beverage making. The utility model is composed of a container, an electric heater and a connecting piece for a power supply. The utility model is characterized in that the container is a metal container, the electric heater is fixed to the bottom surface of the container and composed of more than one PTC thermal sensitive ceramic heating sheets, and the connecting piece for the power supply is respectively connected with the surface of the container and the PTC thermal sensitive ceramic heating sheets. The thermo-insulating water heater using the thermal sensitive ceramic heating sheets has the advantages of quick heating speed, automatic power regulation, automatic constant temperature, little wattless heat loss, safety, long service life, simple structure and convenient operation. The thermo-insulating water heater using the thermal sensitive ceramic heating sheets is especially adapted to be used on various automobiles for drivers to drink water and repast and has multiple functions such as boiling, steaming, etc.

Description

Thermo-insulating water heater using heat-sensitive ceramic heating sheet

The utility model belongs to the cooking, beverage maker design and manufacturing field, and particularly adopting the thermal sensitive ceramics heating plate is the heating vessel of heating source.

Adopting heating wire or electrothermal tube is that the water heater of heating source is a kind of widely used electric heater unit easily, and this class device is that heating element heater (heating wire, electrothermal tube) is independently directly inserted water receptacle (water tumbler, kettle, water and etc.); Or with heating wire, electrothermal tube is fixed on the water receptacle bottom and constitutes an integral body, behind the connection power supply, and can the water in the container is boiled.This class apparatus structure is simple, easy to use, heats up slowly but exist, and power consumption is big, and is easily overheated, and the life-span is short, and power can not be regulated automatically, and temperature is difficult for control automatically, can not dry combustion method, and purposes is single, shortcomings such as poor stability.

The purpose of this utility model is the weak point that overcomes above-mentioned prior art, designing a kind of thermal sensitive ceramics heating plate that adopts is the water heater of heating source, it is fast to make it have firing rate, but automatic constant-temperature and the automatic power of regulating can be not overheated, and is safe and reliable, life-span is long, thermal efficiency height such as can be incubated at advantage, satisfies multiple application need.

The utility model is designed a kind of novel electrical heated appliance, constitute by container, electric heater and mains connection, it is characterized in that said container is a canister, said electric heater is formed for being fixed on the above PTC thermal sensitive ceramics heating plate in said container bottom surface, and said mains connection is connected with said vessel surface and PTC thermal sensitive ceramics heating plate respectively.

The PTC thermal sensitive ceramics heating plate that the utility model adopts is the semistor heater, and Curie temperature is 160 ℃～280 ℃, and the normal temperature resistance only has 0.2～1 Ω, and working voltage is 12～36V.The utility model utilizes the volt one peace characteristic of PTC thermal sensitive ceramics electric heating piece, and the energising back is adjusted heating power automatically, and heating power maintains certain limit.When 20 ℃ of water of heating, heating power is at 200W～300W, and along with the rising of water temperature, heating power descends automatically, and power was at 100W～200W when water temperature reached 100 ℃.When the heater dry combustion method when anhydrous (), when PTC thermal sensitive ceramics electric heating piece reaches near the Curie temperature, its resistance value is uprushed, electric current drops to the minimal maintenance certain level, temperature no longer raises, and power is below 30W, but automatic constant-temperature is near Curie temperature, reach the saving electric energy, safe and reliable effect.

The utility model can comprise container cover, to improve the efficiency of heating surface and heat insulation effect.If minimizing thermal loss, further improve the efficiency of heating surface and heat insulation effect, the utility model also can design a shell, be enclosed within outside the container, can be separated with the heat-insulation layer of air or other insulation materials between shell and the container, container cover also can by and seal closure between be provided with the heat-insulation layer of air or insulation material.For the heating appliances of low capacity, can be connected with the leader in its shell side, for showing the energising heated condition, can one indicator lamp be installed in shell side face bottom, indicator lamp and mains connection link.The shell side bottom is equipped with supply socket, is convenient to be connected with external power.The said PCT thermal sensitive ceramics of the utility model heating plate can be the above garden shape sheet of a slice, and ellipse slice or polygon sheet also can be the ring segments that a chip size and container are complementary.

It is fast to the utlity model has firing rate, and power is regulated automatically, automatic constant-temperature, the characteristics safe and reliable, that the life-span is long, but also have high insulating effect, idle thermal losses is little, save electric energy, simple in structure, easy to use, have boiling, steam characteristics such as multi-functional, because its working voltage is consistent with automobile electrical voltage, be particularly suitable for being applied on the various automobiles for the driver heat up water, make tea, boiled egg and the instant food of heating etc., be the life appliance of numerous drivers indispensability in long-distance transport.

Brief Description Of Drawings:

Fig. 1 is the main cutaway view of the utility model embodiment 1 structure.

Fig. 2 is the upward view of the utility model embodiment 1 structure.

Fig. 3 is the upward view of the utility model embodiment 2 structures.

The utility model proposes the embodiment 1 of a kind of suitable automobile with the insulation water heater, its structure is shown in Fig. 1～2.Be described in detail as follows in conjunction with the accompanying drawings:

Fig. 1 is a present embodiment general structure master cutaway view, comprises heater,

lagging casing

2, and 3 three parts of insulation cover.Wherein heater is to paste six PTC thermal sensitive ceramics heating plates 7 that are evenly distributed on the container 1 made of metal material, the container bottom surface, six stage clips 8 that link together contact with six potsherds respectively, stage clip and battery lead plate 9, insulation board 10 is riveted together, insulation board and shell fix with screw 11, can regulate the degree that compresses of stage clip by screw 11.Battery lead plate is connected by guidewire port with a binding post in the socket 4, and another outer casing underpart is provided with indicator lamp 5, links to each other as shown in Figure 2 with socket.Power line by having plug is connected with power supply on the automobile cigarette lighter like this, realizes the energising heating to water heater.Design has a handgrip on the lagging casing 2, and a fixed cover 15 is arranged above, and the fixed cover inboard links to each other with the container tight fit, and the outside and shell are by a chain for binding criminals line secure fit; Design has an insulation air layer 6 between shell and container.Insulation cover 3 matches with fixed cover on the shell by the twill spiral shell button of inboard, be stuck in the seal closure 16 in the lid, with vessel port, realization is sealed and matched, lid and seal closure 16 with vessel port, are realized being sealed and matched, lid forms an air heat insulating layer 6 with seal closure, and lid leaves two apertures 17 of giving vent to anger respectively with seal closure.Bottom cover plate 18 is fixed on outer casing bottom with screw 19.It is fixed with high-temperature agglomerant by heater container bottom and housing contacts portion.Canister can adopt materials such as stainless steel or alloy aluminum to make.Shell 2 can adopt the heatproof injection-moulding plastic, stage clip 8, and battery lead plate 9 adopts copper production, and insulation board 10 can adopt glass fiber laminate to make.The present embodiment container capacity is 1 liter, and water is boiled to be 20 fens clock times.

The another kind of embodiment of the utility model design is that general structure is formed and embodiment 1 basically identical, just the electrode connecting parts structure is improved, as shown in Figure 3.Wherein directly bond together with electrode slice 19 with PTC thermal sensitive ceramics heating plate 7, battery lead plate is connected with supply socket 4 by lead 12, and is simple in structure, the globality reinforcement.

Container capacity is 1 liter in the foregoing description, and water is boiled to be 20 minutes, and mean power is 250W.

Claims

1, a kind of electrical heated appliance, constitute by container, electric heater and mains connection, it is characterized in that said container is a canister, said electric heater is formed for being fixed on the above PTC thermal sensitive ceramics heating plate in said container bottom surface, and said mains connection is connected with said vessel surface and PTC thermal sensitive ceramics heating plate respectively.

2, electrical heated appliance as claimed in claim 1 is characterized in that also comprising the container cover of covering on container.

3, electrical heated appliance as claimed in claim 1 is characterized in that also comprising the shell that is enclosed within outside the said container.

4, electrical heated appliance as claimed in claim 3 is characterized in that being separated with heat-insulation layer between said container and the shell.

5, electrical heated appliance as claimed in claim 4 is characterized in that also comprising the cool-bag lid, and this cool-bag lid is by the heat-insulation layer between the enclosing cover that matches with said shell and the friction tight seal closure of said container and enclosing cover and the seal closure.

6, as claim 3 or 4 or 5 described electrical heating electricity tools, it is characterized in that said shell side is connected with the leader, also comprises the indicator lamp and the supply socket that connect and be installed in said shell side bottom with said mains connection.