CN2483930Y

CN2483930Y - Ceramic heater

Info

Publication number: CN2483930Y
Application number: CN 01215778
Authority: CN
Inventors: 萧焯尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-03-27
Filing date: 2001-03-27
Publication date: 2002-03-27
Anticipated expiration: 2011-03-27

Abstract

The utility model relates to a ceramic heater, the structural characteristics are that: the utility model comprises a ceramic base body 1, a conductive heating layer 2 and an insulation layer 3, the conductive heating layer 2 is tightly clung to the outer surface of the ceramic base body 1, the insulation layer 3 is tightly clung to the outer surface of the conductive heating layer 2, the two ends of the ceramic heater are provided with a metal connection bolt 4 contacting the conductive heating layer 2. The conductive heating layer 2 is formed by mixed slurry material mixed by ceramic slurry, metal nickel power, metal chromium powder and trace element according to a certain ratio through low temperature desiccation and high temperature agglomeration. The utility model can form ceramic heating pipe and ceramic heating plate, and has advantages such as high pressure resistance, adjustable heating power, good insulation ability, convenient production, and is safe and reliable.

Description

Ceramic heating

The utility model relates to a kind of ceramic heating.Belong to the electric heating appliance technical field.

At present, the electric heating device that is applied to electric heating appliance mainly contains two kinds of wire heating element and ceramic heatings.Therefore ceramic heating more and more is subjected to people's welcome owing to have the big and safety of heat efficiency height, thermal power.For example: the Chinese patent communique discloses name and has been called " electric heater ", the patent No. utility model patent for " 94228312.0 ", is characterized in being assembled by the many earthenwares that have the electrochemistry exothermic paint, constitutes the earthenware heating element.Described earthenware is made of ceramic body, the copper band that has binding post that is positioned on the earthenware inwall conduction chemical coating and is embedded in the two ends inwall.Can overcome the shortcoming of traditional metal electric heating silk heating, have the advantages that area of dissipation is big, the heat efficiency is high, safe and reliable.But because the heating layer of this earthenware is positioned at the inwall of earthenware, therefore, have processing difficulties, heating layer is inhomogeneous, and ceramic body is heated inhomogeneous, thereby is easy to generate short shortcoming of explosion, useful life.

The purpose of this utility model is for the ceramic heating pipe processing difficulties that overcomes prior art, the shortcoming that lack useful life, and a kind of ceramic heating is provided.

The purpose of this utility model can reach by taking following measure: ceramic heating, its design feature is: be made of ceramic matrix, conductive heating layer and insulating barrier, conductive heating layer is close on the outer surface of ceramic matrix, described insulating barrier is close to the outer surface of conductive heating layer, and the two ends of ceramic heating are provided with the metal connection post that contacts with conductive heating layer.

The purpose of this utility model can also reach by taking following measure:

Conductive heating layer is made of ceramic size, metal nickel powder, hafnium metal powfer and trace element, described ceramic size, metal nickel powder, hafnium metal powfer and trace element are mixed into mixed slurry by a certain percentage, and be coated in equably on the outer surface of ceramic matrix, form through low temperature drying, high temperature sintering.

It is earthenware that ceramic matrix is tubular, forms conductive heating layer on its surface, and the outer surface of described conductive heating layer forms a layer insulating again, and two ends are provided with the metal connection post that contacts with conductive heating layer, constitute the ceramic heating pipe.

It is ceramic wafer that ceramic matrix is sheet shape, forms conductive heating layer at its surperficial single face, and the outer surface of described conductive heating layer forms a layer insulating again, and two ends are provided with the metal lead wire that contacts with conductive heating layer, forms the ceramic heating plate of single face heating.

It is ceramic wafer that ceramic matrix is sheet shape, and at the two-sided formation conductive heating layer on its surface, the outer surface of described conductive heating layer forms a layer insulating again, and two ends are provided with the metal lead wire that contacts with conductive heating layer, forms the ceramic heating plate of two-sided heating.

Compared with prior art, the utlity model has following outstanding advantage:

1. form by the outer surface sintering that the slurry with conduction, heating function spreads upon ceramic matrix owing to conductive heating layer, therefore, enough requirements according to caloric value, adjust the weight ratio of the various conductive exothermal materials that constitute conductive heating layer arbitrarily, can be by adjusting the width and the thickness of conductive heating layer arbitrarily, to adjust its withstand voltage and power.

2. owing to be directly heating, far-infrared radiation of surface, therefore, thermal response is fast, the heat efficiency is high, does not have deposition heat.

3. because conductive heating layer is that composite material is made, the insulation property height, conduct electricity very well, conduction and heating surface area are big, so withstand voltage properties is strong, high temperature resistant, electromagnetic-radiation-free.

4. form through 1300 celsius temperature sintering owing to conductive heating layer, so antioxygenic property is good, long-term use can not chapped long service life.

5. the resistance of conductive heating layer has good positive temperature characterisitic (being PTC), and dissipation power has negative temperature characteristic (being NTC), so temperature stability is good.

6. because conductive heating layer is to form at the outer surface of conducting base, therefore, accomplish the surfacing, smooth of conductive heating layer easily, thickness is even, use in that high temperature (can reach more than 700 degrees centigrade) is long-term, and processing is simple.

Below in conjunction with accompanying drawing the utility model is described in detail:

Fig. 1 is the structural representation of the utility model embodiment 1.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Fig. 4 is the structural representation of the utility model embodiment 2.

Fig. 5 is the C-C cutaway view of Fig. 4.

Fig. 6 is the D-D cutaway view of Fig. 4.

Fig. 1, Fig. 2 and Fig. 3 constitute embodiment 1 of the present utility model.From Fig. 1, Fig. 2 and Fig. 3 as can be known, present embodiment is made a kind of ceramic heating pipe.Constitute by ceramic matrix 1, conductive heating layer 2 and insulating barrier 3, it is earthenware that ceramic matrix 1 is tubular, conductive heating layer 2 is made of ceramic size, metal nickel powder (Ni), hafnium metal powfer (Cr) and trace element, described ceramic size, metal nickel powder (Ni), hafnium metal powfer (Cr) and trace element are mixed into mixed slurry by a certain percentage, and be coated in equably on the outer surface of ceramic matrix 1, form through low temperature drying, high temperature sintering; Conductive heating layer 2 is close on the outer surface of ceramic matrix 1, and insulating barrier 3 is close to the outer surface of electric heating layer 2, and ceramic heating pipe two ends are provided with the metal connection post 4 that contacts with conductive heating layer.The manufacturing process of present embodiment is as follows:

In the present embodiment 1: the withstand voltage of conductive heating layer 2 is 220V, and heating power is 1000W.

Fig. 4, Fig. 5 and Fig. 6 constitute embodiment 2 of the present utility model.From Fig. 4, Fig. 5 and Fig. 6 as can be known, present embodiment constitutes single face ceramic heating plate.Constitute by ceramic matrix 1, conductive heating layer 2 and insulating barrier 3, it is ceramic wafer that ceramic matrix 1 is sheet shape, conductive heating layer 2 is made of ceramic size, metal nickel powder (Ni), hafnium metal powfer (Cr) and trace element, described ceramic size, metal nickel powder (Ni), hafnium metal powfer (Cr) and trace element are mixed into mixed slurry by a certain percentage, and be coated in equably on the outer surface of ceramic matrix 1, form through low temperature drying, high temperature sintering; Conductive heating layer 2 is close on the single face outer surface of ceramic matrix 1, and described insulating barrier 3 is close to the outer surface of conductive heating layer 2, and the two ends of ceramic heating plate are provided with the metal connection post 4 that contacts with conductive exothermal.

In the present embodiment 2: the withstand voltage of conductive heating layer 2 is 110V, and heating power is 500W.

Embodiment 3 of the present utility model is: it is ceramic wafer that ceramic matrix 1 is sheet shape, the two-sided conductive heating layer 2 that sticks on its surface, the outer surface of described electric heating element forms a layer insulating 3, and two ends are provided with the metal lead wire 4 that contacts with conductive heating layer 2, forms the ceramic heating plate of two-sided heating.All the other are with embodiment 2.

In the present embodiment 3: the withstand voltage of conductive heating layer 2 is 380V, and heating power is 10KW.

Embodiment 4 of the present utility model is: the withstand voltage of conductive heating layer 2 is 12V, and heating power is 3W.All the other are with embodiment 1.

Embodiment 5 of the present utility model is: the withstand voltage of conductive heating layer 2 is 100V, and heating power is 100W.All the other are with embodiment 1.

Embodiment 6 of the present utility model is: the withstand voltage of conductive heating layer 2 is 150V, and heating power is 5KW.All the other are with embodiment 2 or embodiment 3.

Claims

1. ceramic heating, it is characterized in that: constitute by ceramic matrix (1), conductive heating layer (2) and insulating barrier (3), conductive heating layer (2) is close on the outer surface of ceramic matrix (1), described insulating barrier (3) is close to the outer surface of conductive heating layer (2), and the two ends of ceramic heating are provided with the metal connection post (4) that contacts with conductive heating layer (2).

2. ceramic heating according to claim 1, it is characterized in that: conductive heating layer (2) is made of ceramic size, metal nickel powder, hafnium metal powfer and trace element, described ceramic size, metal nickel powder, hafnium metal powfer and trace element are mixed into mixed slurry by a certain percentage, and be coated in equably on the outer surface of ceramic matrix (1), form through low temperature drying, high temperature sintering.

3. ceramic heating according to claim 1 and 2, it is characterized in that: it is earthenware that ceramic matrix (1) is tubular, form conductive heating layer (2) on its surface, the outer surface of described conductive heating layer (2) forms a layer insulating (3) again, two ends are provided with the metal connection post (4) that contacts with conductive heating layer (2), constitute the ceramic heating pipe.

4. ceramic heating according to claim 1 and 2, it is characterized in that: it is ceramic wafer that ceramic matrix (1) is sheet shape, form conductive heating layer (2) at its surperficial single face, the outer surface of described conductive heating layer (2) forms a layer insulating (3) again, two ends are provided with the metal lead wire (4) that contacts with conductive heating layer (2), form the ceramic heating plate of single face heating.

5. ceramic heating according to claim 1 and 2, it is characterized in that: it is ceramic wafer that ceramic matrix (1) is sheet shape, two-sided formation conductive heating layer (2) on its surface, the outer surface of described conductive heating layer (2) forms a layer insulating (3) again, two ends are provided with the metal lead wire (4) that contacts with conductive heating layer (2), form the ceramic heating plate of two-sided heating.

6. ceramic heating according to claim 1 and 2 is characterized in that: the withstand voltage scope of conductive heating layer (2) is 12V～380V, and heating power is 12W～10KW.