CN2335333Y

CN2335333Y - Non-coil type electric-heating assembly

Info

Publication number: CN2335333Y
Application number: CN 98205867
Authority: CN
Inventors: 谢采芬
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-11
Filing date: 1998-06-11
Publication date: 1999-08-25
Anticipated expiration: 2008-06-11

Abstract

The utility model relates to a non-coil type electric-heating assembly, which comprises at least one positive temperature coefficient resistor component, electrodes which are respectively arranged on both sides of the positive temperature coefficient resistor element, and a heat radiation fin plate with a prearranged length which is continuously bent and extends into the shape of a square wave along a long shaft, an adhesion object, which is coated on each wave peak of the heat radiation fin plate and the upward surfaces of the electrodes, a metal plate, which is stuck on the other side of the heat radiation fin plate, and an electric conduction thin sheet, which is clamped between the positive temperature coefficient resistor component and the heat radiation fin plate. The heat radiation fin plate is correspondingly butted with the exposed surface of the electrodes of the positive temperature coefficient resistor component by a flat wave peak on one side of the heat radiation fin plate. The heat radiation fin plate is combined with the electrodes by the adhesion object.

Description

Non-coil type electric-heating assembly

The utility model is relevant with the heating system of electric warm braw fan, especially about a kind of non-coil type electric-heating assembly.

With regard to existing technology, using a kind of so-called positive temperature coefficient resistor element (PTCR) is extensive use of by industry as the technology of electric warm braw fan thermal source, the main feature of this kind element is to be itself to have temperature controlled characteristic, and can not react with airborne oxygen, and be applied as the thermal source of electric warm braw fan, so that fanning when using, electric warm braw can not consume oxygen, easy speech, promptly be when airtight indoor use, also unlikely producing oxygen consumes and causes the CO (carbon monoxide converter) gas that forms incomplete combustion, and it is to make the user that safe operational support is arranged.

Plant the character of element according to this, though it has safe usability, but with the heat that it was provided, promptly not if generally provide as the article of heat with fired state, the oxygen that only need supply with capacity can reach a stable and high efficiency heat energy supply status, and the heat power output of this positive temperature coefficient resistor element again with the temperature of itself and context, and the coefficient of heat transfer of itself is relevant, in addition the variation that can produce of the temperature of this positive temperature coefficient resistor element itself and context is little, therefore, the mode that desire promotes its power the best is the coefficient of heat transfer that changes itself, and for reaching this purpose, the radiating effect that increases this positive temperature coefficient resistor element with the heat abstractor of metal is then arranged in industry, promote its whole power to promote its radiating efficiency.

With regard to generally commonly using the heat dissipation metal device, it is to utilize will dispel the heat fin keel and positive temperature coefficient resistor element of adhesive agent to amplexiform together, with fin keel dissipation outward, though this kind structure can reach the radiating effect of some degree so that the heat on the positive temperature coefficient resistor element dispels the heat certainly.Precisely because be gripped with one deck conduction or non-conductive adhesive agent between positive temperature coefficient resistor element and heat radiation fin keel, as belong to non-conductive adhesive agent, its thermal impedance is quite big, the side of changing it, these non-conductive adhesive agents can make the coefficient of heat transfer of positive temperature coefficient resistor element diminish, and therefore can't bring into play due thermal power.And when adhesive agent tool conductivity, it not only costs an arm and a leg, and tackness is not good, be subjected to clashing into slightly or shaking promptly and can burst apart, moreover when the adhesive agent of these conductions oozes or be extruded each element peripheral, can produce the phenomenon of gap discharge and flame flower, cause the danger in the use.

Therefore, main purpose of the present utility model is promptly providing a kind of non-coil type electric-heating assembly of improvement, and it can do the thermal power of positive temperature coefficient resistor element maximum performance person.

Another purpose of the present utility model is then providing a kind of non-electric circle formula electric-heating assembly of improvement, and it must not make the adhesive agent person of apparatus conductivity.

Edge is, for reaching aforementioned purpose, and non-coil type electric-heating assembly provided by the utility model, it includes at least one positive temperature coefficient resistor element, respectively is provided with an electrode in its opposite both sides; The heat radiation fin keel of one tool predetermined length is to bend and extend into one square wavyly continuously along major axis, and is connected on the electrode exposed surface of this positive temperature coefficient resistor element with the most smooth crest correspondence of a side; One adhesion is to be coated on the surface in opposite directions of each smooth crest of this heat radiation fin keel and this electrode, combines in order to each the smooth crest surface of the fin keel that will dispel the heat and the exposed surface of this electrode; One metallic plate is to be attached at this heat radiation fin keel in addition on the surface of each smooth crest of side; One conductive foil, its surface area is little than the surface area of the plate face of the smooth crest of this heat radiation fin keel tool, is directly to be folded between the two with the exposed surface of the electrode of this positive temperature coefficient resistor element and the surperficial mode that contacts of each smooth crest of this heat radiation fin keel; Wherein, this conductive foil is a sheet metal; Wherein more including another metallic plate, is to be attached on the surface of each smooth crest of electrode exposed surface butt of this heat radiation fin keel and this positive temperature coefficient resistor element; The surface area of this conductive foil is little than this metallic plate, and is to be folded between the electrode exposed surface and this metallic plate of this positive temperature coefficient resistor element; Wherein this adhesion is to be insulating cement.By this, the electric current that imports from the outside can from this metallic plate via this conductive foil the electrode of this positive temperature coefficient resistor element that arrives, and make the electrical power of input to increase, moreover the heat that this positive temperature coefficient resistor element is produced is the metallic plate that reaches heat radiation via the less conductive foil of thermal impedance, therefore has preferable thermal power.

Below, lift two preferred embodiments of the present utility model and conjunction with figs. now and be described further, wherein:

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

Fig. 2 is the stereogram of the utility model one preferred embodiment;

Fig. 3 is the cutaway view of the utility model one preferred embodiment along the 3-3 direction of Fig. 2; And

Fig. 4 is the exploded view of another preferred embodiment of the utility model.

See also shown in Fig. 1 to 3, non-coil type electric-heating assembly 10 provided by the utility model is rectangle positive temperature coefficient resistor sheet 20, two heat radiation fin keels 30, two rectangular aluminum thin slices 40 of being made with pottery by some, silicon adhesive agent 50, and two outer metallic plates 60 constitute.

Respectively this positive temperature coefficient resistor sheet 20 has upper and lower two opposing

flat surfaces

21,22, two

metal electrodes

24,26 respectively and is attached to respectively this flat surfaces respectively.

This two heat radiations fin keel 30 is to have predetermined length respectively, and is bent to form continuously along its long axis direction and has the square wavy of most smooth crests 32.

Respectively the surface area of this aluminum slice 40 is that the area of the imaginary surface that defined than these heat radiation fin keel 30 1 each smooth crests of side is little, during combination, be the central authorities that are placed on this imaginary surface, be used to form a rectangle frame around this surface, as shown in Figure 1, this silicon adhesive agent 50 is promptly coated on the surface of each the smooth crest 32 that constitutes this rectangle frame.Respectively this positive temperature coefficient resistor sheet 20 is that cloth is listed in respectively on this aluminum slice 40 and this rectangle frame in regular turn, and this adhesive agent of mat 50 amplexiforms together with this heat radiation fin keel 30 respectively, after amplexiforming, the electrode the 24, the 26th of this positive temperature coefficient resistor sheet 20 respectively touches with up and down aluminum slice 40 respectively.

Respectively should outer metallic plate 60 be to be welded in respectively on each smooth crest 34 of a side in this heat radiation fin keel 30 respectively, and an end of major axis connect a conducting terminal 62.

See also Fig. 4 again, the utility model is except that last embodiment, also can take metallic plates 70 in two and the two is welded in respectively on each smooth crest 32 of these heat radiation fin keel 30 inboards respectively, and respectively this aluminum slice 40 is directly to place the outer surface that respectively is somebody's turn to do interior metallic plate 70, and form a rectangle frame around in this surface, similarly, this adhesive agent 50 (can be the silicon insulating cement) is promptly coated on the surface that constitutes this rectangle frame.Respectively this positive temperature coefficient resistor sheet 20 also equally in regular turn cloth list in respectively on this aluminum slice 40 and this rectangle frame, and this adhesive agent of mat 50 amplexiforms together with this heat radiation fin keel 30 respectively, and the electrode the 24, the 26th of this positive temperature coefficient resistor sheet 20 respectively after amplexiforming, and touches with up and down aluminum slice 40 respectively.

By the explanation of aforementioned two embodiment as can be known, electric-heating assembly 10 of the present utility model, conductivity and heat conduction that its positive temperature coefficient resistor sheet 20 and each heat radiation fin keel are 30, major part is to be that little aluminum slice 40 is reached than adhesive agent all via electrical impedance and thermal impedance, therefore, undoubtedly, this electric-heating assembly 10 will have bigger input electric power and bigger heat outputting power, more and also not have the disappearance of using the conduction adhesive agent.

Claims

1. a non-coil type electric-heating assembly is characterized in that, includes:

At least one positive temperature coefficient resistor element respectively is provided with an electrode in its opposite both sides;

The heat radiation fin keel of one tool predetermined length is to bend and extend into one square wavyly continuously along major axis, and is connected on the electrode exposed surface of this positive temperature coefficient resistor element with the smooth crest correspondence of a side;

One adhesion is to be coated on the surface in opposite directions of each smooth crest of this heat radiation fin keel and this electrode, combines in order to each the smooth crest surface of the fin keel that will dispel the heat and the exposed surface of this electrode;

One metallic plate is to be attached at this heat radiation fin keel in addition on the surface of each smooth crest of side; And

One conductive foil, its surface area is little than the surface area of the plate face of the smooth crest of this heat radiation fin keel tool, is directly to be folded between the two with the exposed surface of the electrode of this positive temperature coefficient resistor element and the surperficial mode that contacts of each smooth crest of this heat radiation fin keel.

2. according to the described non-coil type electric-heating assembly of claim 1, it is characterized in that wherein, this conductive foil is a sheet metal.

3. according to the described non-coil type electric-heating assembly of claim 1, it is characterized in that, wherein more include another metallic plate, is to be attached on the surface of each smooth crest of electrode exposed surface butt of this heat radiation fin keel and this positive temperature coefficient resistor element; The surface area of this conductive foil is little than this metallic plate, and is to be folded between the electrode exposed surface and this metallic plate of this positive temperature coefficient resistor element.

4. according to the described non-coil type electric-heating assembly of claim 1, it is characterized in that wherein this adhesion is to be insulating cement.