CN2138870Y

CN2138870Y - Heating device of electric heater

Info

Publication number: CN2138870Y
Application number: CN 92234210
Authority: CN
Inventors: 叶元璋
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-24
Filing date: 1992-09-24
Publication date: 1993-07-21
Anticipated expiration: 2002-09-24

Abstract

The utility model relates to a heating device of an electric heater. The middle part of the relative plate surfaces of two metal heat-distributing plates are clamped with a plurality of heating pieces with positive temperature coefficient resistors in a linear arrangement and each heating piece is provided with two relative flat surfaces which are respectively accompanied with an electrode layer for contacting with the relative plate surfaces of each metal heat-distributing plate to conduct electricity. Each relative plate surface is coated with an insulating adhesive layer with a scheduled pattern in a screen printing way and simultaneously forms a space which is complemented with the pattern. The adhesive layer makes each heating pieces tightly clamped between the metal heat-distributing plates and the space or a metal diaphragm which is laid at the space makes each metal heat-distributing plate and each heating pieces with favorable electrical conduction and electrothermic performance.

Description

Heating device of electric heater

The utility model is relevant with the electro-heat equipment of electric heater, is the electro-heat equipment of pyrotoxin about a kind of positive temperature coefficient resistor (PTCR) particularly.

Positive temperature coefficient resistor since have self temperature control characteristic and not can with airborne oxygen generation effect, so can be not rubescent, burning, also can not produce taste, toxic gas and waste gas, now by extensively as the source (thermal source) of constant temperature heating energy.

At United States Patent (USP) the 4th, 327, proposing a kind of in No. 282 is the heat generating component of thermal source with PTCR, be a plurality of PTCR sheets shop is placed between two metallic heat radiating plates, and then with

Mould plastic clip spare together with each metallic heat radiating plate clip.The shortcoming of this heat generating component is that assembling is quite loaded down with trivial details, and can wear out and lose clip strength at the back plastic cement folder that expands with heat and contract with cold of normal phase, will cause that so each spare part is scattered and strengthens gap discharge phenomenon between each metallic heat radiating plate interior plate face and each PTCR plate electrode.

In addition, at United States Patent (USP) the 4th, 482, then proposing another kind of in No. 801 is the heat generating component of thermal source with PTCR, is to insert and put a plurality of PTCR sheets with two metallic heat radiating plates equally, precisely because be to make the surface of each PTCR sheet wavy, and when combination, in each PTCR sheet surface coated one deck insulation adhesion glue, each PTCR sheet Cheng Liezhuan shakedown is placed between two relative plate faces of two metallic heat radiating plates then, insulation adhesion glue room gel under pressured state is solidified.The shortcoming of this heat generating component is that each surface is wavy PTCR sheet when making with ceramic post sintering, and its defect rate is very high, moreover the electrode surface of each PTCR sheet and the contact area of each metallic heat radiating plate are quite little, and is therefore all not good in conduction and heat conduction.

Therefore, it is the electric heater electro-heat equipment of pyrotoxin with the positive temperature coefficient resistor that main purpose of the present utility model promptly is to provide a kind of, and it can simplify each combinator between part in addition.

It is the electro-heat equipment of pyrotoxin with the PTCR heat generating member that another purpose of the present utility model is to provide a kind of, and it can reduce to minimum with the gap discharge phenomenon between PTCR heat generating member and other part composition surface of heat radiation.

It is the improved electro-heat equipment of pyrotoxin with the PTCR heat generating member that another purpose of the present utility model is to provide a kind of, it can make the abutment surface of PTCR heat generating member and other part of heat radiation have very big direct contact surface after contacting and amass, and it is good therefore all comparatively not commonly using the person in conduction and heat conduction.

It is the electro-heat equipment of pyrotoxin that a purpose more of the present utility model is to provide a kind of PTCR heat generating member, and it can be installed in the water in the heater.

For achieving the above object, the electro-heat equipment of the utility model electric heater comprises: at least one positive temperature coefficient resistor heat generating member, and it has two relative flat surfaces, adheres to the layer of metal electrode on each surface respectively; Two metallic heat radiating plates, its shape and size are corresponding to above-mentioned PTCR heat generating member, lay respectively on each opposed flattened surface of this PTCR heat generating member, and with sandwich-type the PTCR heat generating member is folded in therebetween, each heating panel all has a plate face and touches with each metal electrode of PTCR heat generating member respectively; It is characterized in that: be coated with the insulation adhesion glue-line that one deck has preset pattern on the plate face that each heating panel and each metal electrode of PTCR heat generating member touch, be used for making this PTCR heat generating member can closely be sandwiched between between each heating panel, space with the complementation of insulation adhesion glue pattern on each plate face then directly contacts with each metal electrode of this PTCR heat generating member, with so that have good electrical conductivity and heat conductivity between each metallic heat radiating plate and PTCR heat generating member.

In this practical embodiment, lay a metallic membrane respectively on the space of the plate face of each metallic heat radiating plate and the complementation of insulation adhesion glue pattern, make each metal electrode of PTCR heat generating member and the contact condition between each heating panel more good whereby.

In another embodiment of the utility model, for electro-heat equipment be can be used in the water in the heater, paste one deck insulation film in advance on the one plate face of each metallic heat radiating plate, and then the insulation adhesion glue-line that coating on each insulation film is had preset pattern, in addition, each metallic membrane then extends a power supply guiding access respectively outward.

In another embodiment of the present utility model, electro-heat equipment can be used in the water in the heater equally, lie in the combination of each metallic heat radiating plate and PTCR heat generating member after, coat an insulating sleeve at its outer surface.

Moreover, in above-mentioned each embodiment of the present utility model, the pyrotoxin after the combination can be placed in the good shell body of a heat conductivity and water-proofing treatment in addition, so will make this electro-heat equipment have more commodity value.

Below cooperation is graphic is described further above-mentioned each embodiment of the present utility model, wherein:

Fig. 1 is the exploded perspective view of the utility model embodiment one.

Fig. 2 is the combination stereogram of the utility model embodiment one.

Fig. 3 is the utility model embodiment one cutaway view on the 3-3 direction in Fig. 2.

Fig. 4 is the utility model embodiment one when being coated with an insulation film and the cutaway view of Fig. 3 equidirectional.

Fig. 5 is the exploded perspective view of the utility model embodiment two.

Fig. 6 is the combination stereogram of the utility model embodiment two.

Fig. 7 is the utility model embodiment two cutaway view on the 7-7 direction in Fig. 6.

Fig. 8 is the exploded perspective view of the utility model embodiment three.

Fig. 9 is the combination stereogram of the utility model embodiment four.

Figure 10 is the utility model embodiment four cutaway view on the 10-10 direction in Fig. 9.

At first see also Fig. 1 to Fig. 3.The electro-heat equipment 10 of the utility model embodiment one has three positive temperature coefficient resistor potsherds 12, and two are used for each potsherd 12 is folded in therebetween metallic heat radiating plate 14.

Each potsherd 12 all has two relative flat surfaces 16, then is attached with a metal electrode layer 18 on each surface 16.

Each metallic heat radiating plate 14 all has a plate face 20 and is used for inserting and putting each potsherd 12.During combination, at first utilize stencil printing to be coated with the insulation adhesion glue-line 22 of a rectangular ring-type at plate face 20 peripheries, the part of its uncoated insulation adhesion glue then form one with the adhere coffin 24 of glue-line 22 pattern complementations of insulation; Then each potsherd 12 arow is laid on the plate face 20; Last again with each part in addition after the external force cramping combinations thereof, making insulation adhesion glue-line 22 solidified by gel, so promptly can be made into a complete electro-heat equipment 10.

By as can be known aforementioned, electro-heat equipment of the present utility model 10 on the one hand by the insulation adhesion glue-line 22 of rectangular ring-type with each potsherd 12 close and firm be interposed between each metallic heat radiating plate 14, then directly contact (as shown in Figure 3) by coffin 24 with the metal electrode layer 18 of each potsherd 12 on the other hand, so the aforesaid shortcoming of commonly using heat generating component can be overcome effectively.

See also Fig. 4 again, this electro-heat equipment 10 as when desiring pyrotoxin as heater in the water, can one the sheath 26 made of insulation gummed paper (as the kapton that E.I.Du Pont Company produced) be coated on the outer surface of electro-heat equipment 10, each metallic heat radiating plate 14 then extends a power supply guiding access 28 respectively in the short side of homonymy, so power supply can be introduced electro-heat equipment 10 and reach the insulation purpose.

For the electro-heat equipment 30 of the utility model embodiment two, please cooperate and consult Fig. 5,6 and 7.This electro-heat equipment 30 is similar with electro-heat equipment 10, have three PTCR potsherds 32 equally, and two metallic heat radiating plates 34, be used for each potsherd 32 is folded in therebetween, also be coated with equally on one of each metallic heat radiating plate 34 plate face 36 rectangular ring-type insulation adhesion glue-line 38 and with the adhere coffin 40 of glue-line 38 pattern complementations of this insulation.Different persons are that the coffin 40 of this electro-heat equipment 30 is equipped with the very thin rectangular metal diaphragm 42 of a thickness in advance, and then each potsherd 32 shop are placed on the open surface of insulation adhesion glue-line 38 and metallic membrane 42.The advantage of this structure can not produce space (as shown in Figure 7) when being to make the metal electrode layer 44 of each potsherd 32 to contact with coffin 40, so the gap discharge phenomenon of the two can be reduced to minimum.

See also Fig. 8 again.When heater uses in electro-heat equipment 30 as the desire hydrous water, can paste an insulation glued membrane 46 on the plate face 36 of each metallic heat radiating plate 34 in advance, on this insulation glued membrane 46, be coated with insulation adhesion glue-line 38 and form a coffin 48 then with stencil printing, 42 shops of each metallic membrane place on the coffin 48, each potsherd 32 are folded at last 36 in the plate face of each metallic heat radiating plate 34 again.Electro-heat equipment 30 can make the weak point side of each metallic membrane 42 homonymy extend a power supply guiding access 50 respectively when doing the aforementioned dielectric arrangement, power supply can be introduced so on the one hand, then can reach the purpose with external insulation on the other hand.

In addition, see also Fig. 9 and Figure 10.Electro-heat equipment of the present utility model can be taken a metal shell 60 when reality is made, these housing 60 inside should have corresponding to the space 62 of electro-

heat equipment

10 or 30 shapes and the openend 64 that communicates with this space 62.During combination, electro-

heat equipment

10 or 30 is put into space 62 from openend 64, and then give suitable water-proofing treatment, for example at the material of openend 64 places filling insulating cement or other waterproof insulations, each power supply guiding access 28 or 50 is then drawn outward from openend 64.

In sum, electro-heat equipment of the present utility model has following every advantage at least:

1. simple and convenient assembly is quick;

2. the gap discharge phenomenon between each metallic heat radiating plate and each PTCR heat generating member can be reduced to minimum;

3. the surface of PTCR potsherd must not made wavy, thereby the defect rate can reduce the PTCR potsherd and make the time;

4. quite good conduction and heat conductivity are arranged;

5. can be used as the pyrotoxin of heater in the water;

6. has high and stable heat energy output.

Claims

1, a kind of electro-heat equipment of electric heater includes:

At least one positive temperature coefficient resistor (PTCR) heat generating member, it has two relative flat surfaces, is attached with the layer of metal electrode on each surface respectively;

Two metallic heat radiating plates, its size and shape are corresponding to described PTCR heat generating member, lay respectively on each opposed flattened surface of this PTCR heat generating member and with sandwich-type this PTCR heat generating member is folded in therebetween; One of described each heating panel plate face touches with each metal electrode of this PTCR heat generating member respectively;

It is characterized in that:

Be coated with the insulation adhesion glue-line that one deck has preset pattern on the plate face that described each heating panel and described each metal electrode of PTCR heat generating member touch, be used for described PTCR heat generating member is is closely inserted and put and fits between described each heating panel, then be used for directly touching with the part of this insulation adhesion glue-line pattern complementation on described each plate face, make between described each metallic heat radiating plate and described PTCR heat generating member to have favorable conductive and heat conductivity with each metal electrode of described PTCR heat generating member.

2, electro-heat equipment according to claim 1 is characterized in that, also includes two metallic membranes, is layed in respectively on the part of the plate face of described each metallic heat radiating plate and described insulation adhesion glue-line pattern complementation.

3, electro-heat equipment according to claim 2, it is characterized in that, before uncoated described insulation adhesion glue-line, be covered with one deck insulation film in advance on the plate face that described each heating panel and described each metal electrode of PTCR heat generating member touch, respectively be coated with the insulation adhesion glue-line that has preset pattern with described on the open surface of this insulation film again, described each metallic membrane then is covered on partly going up of described each open surface and the complementation of described insulation adhesion glue-line and extends a power supply guiding access respectively outward.

4, electro-heat equipment according to claim 1 and 2 is characterized in that, also comprises an insulating sleeve, and this sheath is coated on the outer surface of each other part after the applying.

5, electro-heat equipment according to claim 3 is characterized in that, also comprises the good shell body of a heat conduction, will and be folded in the pyrotoxin that described PTCR heat generating member therebetween combines by described each metallic heat radiating plate in the mode of waterproof and be contained in its inside.

6, electro-heat equipment according to claim 4 is characterized in that, also comprises the good shell body of a heat conduction, will and be folded in the pyrotoxin that described PTCR heat generating member therebetween combines by described each metallic heat radiating plate in the mode of waterproof and be contained in its inside.