CN203219516U - Thick film heater - Google Patents
Thick film heater Download PDFInfo
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- CN203219516U CN203219516U CN 201320231070 CN201320231070U CN203219516U CN 203219516 U CN203219516 U CN 203219516U CN 201320231070 CN201320231070 CN 201320231070 CN 201320231070 U CN201320231070 U CN 201320231070U CN 203219516 U CN203219516 U CN 203219516U
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- heater
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- thick film
- sealing plate
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Abstract
The utility model relates to a thick film heater. The thick film heater comprises a heating substrate. One side of the heating substrate is printed with a thick film circuit. One end of the heating substrate is provided with an outer contact point. One side of the heating substrate, which is printed with the thick film circuit, is sealed with a sealing plate. One end of the heating substrate, which is provided with the outer contact point, is provided with a first coupling end used to connect a flange disk. The sealing plate is provided with a groove used for routing of the outer contact point. The position of a depressed portion of the groove is opposite to the position of the outer contact point. The groove is provided with a second coupling end used to connect the flange disk. By using the heater of the utility model, a heat exchange area of the heater is multiplied; heat dissipation efficiency of the heater is increased; the heating substrate and the sealing plate are sealed and connected on the flange disk or other sealing components so that the whole heater is completely immersed in a liquid to be heated; during an installation process of the heater, retroposition of an outer contact point welding lead process on the heating substrate is realized and the whole installation process of the heater is optimized maximumly.
Description
Technical field
The utility model relates to fluid electric heating device technical field, relates in particular to a kind of thick film heater.
Background technology
The thick film heating technique is to adopt the thick film silk-screen printing technique at substrate, successively prints dielectric, heating resistor, conductor and insulating protective layer at substrate, the heater element that forms through high temperature sintering.Thick film heat energy printing technology has the advantages that heat conductivility is good, area of dissipation is big and security performance is high, still, and the present designing requirement that does not also reach utilization in full force and effect for efficient and the performance of fluid heating.As being used for making the thick film heater of water heater in the prior art, its general two heating plates applyings and welded seal of adopting, to avoid contacting between thick film circuit and the fluid to be heated on the heating plate, yet heating plate need and fluid isolation to be heated to require because of energising, heating plate one end that general employing will be provided with external contact is isolated in the water heater outside by ring flange or other seal, to avoid electric leakage.Such design, the heat exchange of two heating plates in the heater is confined on two faces of heating plate, owing to fit in the no gap of two heating plates, reduced the heat dispersion of heater, very easily cause the heater internal temperature too high, make heater surfaces produce incrustation scale or cause heater texturing and burn.On the other hand, the end that heater is provided with external contact is isolated in outside ring flange or the seal, has wasted the heat exchange that is provided with external contact heating plate one end when using, and fails fully effectively to utilize its heat efficiency.
For solving the problems referred to above that heater is provided with the heating plate one end heat exchange waste of external contact, also there is manufacturer to design a kind of sealing means, this design makes heated substrates seal the back fully by the conduit mounting flange, conduit is used for the external of heater inner lead, utilize conduit that ring flange and heater are divided at a certain distance, heater is immersed in the liquid to be heated fully, effectively raise the heat dispersion of heater, and fully effectively utilize its heat efficiency.But this heater needs earlier high temperature wire to be welded on the external contact when installing and using, because of the fusing point of pad limited, resistant to elevated temperatures pad easily causes the damage of pad when heater pyrolytic coating fluorine resin coating layer or other high-temperature operation, reduced the overall performance of heater.On the other hand, owing to be provided with certain spacing between heater and the ring flange, also corresponding big to the volume of heater housing, reduced heater housing space availability ratio of inner, be unfavorable for that heater develops towards direction high-power, small size.
Summary of the invention
Technical problem to be solved in the utility model be at conventional heater have heating plate working temperature height, radiating efficiency is low, heat efficiency utilance is low, outer contacting point scolding tin easy damaged and the low the problems referred to above of heater case intracorporeal space utilance, but provide that a kind of heating plate working temperature is low, radiating efficiency is high, the thick film heater of heat efficiency utilance height, the welding of easy to assembly, external contact finishing operation.
For addressing the above problem, the technical solution of the utility model is:
A kind of thick film heater, comprise that one has the heated substrates of heat conductivility, be printed with thick film circuit on the one side of heated substrates, one end of heated substrates is provided with the external contact for the thick film circuit cabling, described heated substrates is printed with the sealing plate that is sealed with on the one side of thick film circuit for thick film circuit on the heated sealed substrate, the end that heated substrates is provided with external contact is provided with first link for mounting flange, be provided with the groove for external contact cabling on the described sealing plate, the depressed part of groove is relative with the position of external contact, and groove is provided with second link for mounting flange.
The utility model is sealed in the monolithic heated substrates of thick film heater on the sealing plate, and heated substrates and sealing plate first link and second link are set on the bottom respectively, first link can be used for directly being connected with the housing of liquid to be heated or being connected with ring flange with second link.Wherein the cabling of thick film circuit is realized by the groove on the sealing plate, namely is formed for the cavity of cabling between heated substrates and the sealing plate, and this cavity bottom is exactly first link and second link.Because heated substrates directly links to each other with housing or ring flange with sealing plate, increased the tightness degree that heater is connected with housing or ring flange, at utmost utilized the space of enclosure interior, simultaneously can be from the external contact of housing or the outside directly processing of ring flange thick film heater.Thick film heater is in installation process, by the cavity on the heater, realized outer contacting means of spot welds lead operation on the heated substrates after move, make thick film heater can carry out the spraying of high temperature fluorine resin coating earlier, the external contact of welding, back, effectively guarantee the bonding strength between external contact and the high temperature wire, farthest optimized heater whole erection process.
Be compared to prior art, thick film heater of the present utility model increase at double the heat exchange area of heater, further improved the radiating efficiency of heater, thereby effectively reduced the working temperature of heater, and by first link and second link heated substrates and sealing plate together are sealedly connected on ring flange or other seal, whole heater is immersed in the liquid to be heated fully; In the heater installation process, realized outer contacting means of spot welds lead operation on the heated substrates after move, really effectively guaranteed the bonding strength between external contact and the high temperature wire, farthest optimize heater whole erection process, realized the maximization that heater housing inner space utilizes simultaneously.
Preferably, described first link and second link are welded on the ring flange.Guaranteed bonding strength and sealing effectiveness between heated substrates and sealing plate and the ring flange, ring flange is used for being connected with the housing of liquid to be heated, and first link and second link also can directly be welded on the housing of liquid to be heated.
Preferably, described groove is the arch projection of outside die casting on sealing plate, and a side of groove is uncovered, and the end that groove is uncovered is second link.Rheo-die-casting groove on sealing plate has reduced the complexity that heater is produced, and has improved convenience, and the end that groove is uncovered is used for and the ring flange welding, but thereby from ring flange bottom postorder welding high temperature wire.
Preferably, described groove is the uncovered square groove shape body of a side, three side channel limits of groove and sealing plate welding, and the end that groove is uncovered is second link.Groove can be various conventional shapes, can be welded on the sealing plate or direct die cast on the sealing plate, the groove of different shape for the outer contacting cabling with all in protection range of the present utility model.
Preferably, described groove is arranged on a sidepiece of sealing plate one end, and is corresponding, and external contact is arranged on a sidepiece of heated substrates one end, the side of relative groove one side on the opening end that described second link comprises groove and the sealing plate.Groove occupy sealing plate a sidepiece of an end or an end, all can realize this effect, finally needs when realizing that external contact is finally welded and deciding.
Preferably, described heater also comprises having the same structure secondary heater, and heater and secondary heater be arranged in parallel, and heater and secondary heater are connected on the same ring flange.Two veneer heaters are used for satisfying the requirement of different heating device heating power, also guarantee the area of dissipation of two veneer heaters under co-operation simultaneously, effectively raise radiating efficiency.
Preferably, described heater and secondary heater be provided with sealing plate one side install in opposite directions.Because sealing plate one side is provided with groove to outer lug, heater cooperatively interacts at groove, is conducive to reduce the area of ring flange, improves the compactness of whole heater.
Preferably, the groove on the described heater is communicated with groove on the secondary heater.Two grooves are conducive to the welding of high temperature wire on the external contact together with the installing space that has increased external contact place on two heaters.
Preferably, it is the connector of U-shaped that groove after the described connection forms the longitudinal section, the two ends of U-shaped connector respectively with heater on sealing plate and the welding of the sealing plate on the secondary heater.The connector of U-shaped can be welded on two sealing plates in advance, has changed the installation procedure of heater, to adapt to different needs.
Preferably, described first link is that heated substrates is provided with the side of external contact one end or the welding bar that welds at heated substrates.Heated substrates is provided with to be reserved with on the end of external contact and guarantees the not reservation border of soldered damage of thick film circuit, the side of reserving the border is used for welding with ring flange, in addition, can be when heated substrates not be printed thick film circuit yet, at heated substrates welding or bending welding bar, be used for welding with ring flange.
Description of drawings
Fig. 1 be among the utility model thick film heater embodiment 1 heated substrates and sealing plate the decomposition texture schematic diagram.
Fig. 2 is the package assembly schematic diagram of heater among the utility model thick film heater embodiment 1.
Fig. 3 be among the utility model thick film heater embodiment 2 heated substrates and sealing plate the decomposition texture schematic diagram.
Fig. 4 is the package assembly schematic diagram of heater among the utility model thick film heater embodiment 2.
Fig. 5 be among the utility model thick film heater embodiment 3 heated substrates and sealing plate the decomposition texture schematic diagram.
Fig. 6 is the package assembly schematic diagram of heater among the utility model thick film heater embodiment 4.
Fig. 7 is the decomposition texture schematic diagram of heater among the utility model thick film heater embodiment 4.
Embodiment
Further describe the utility model below in conjunction with drawings and Examples, but protection range of the present utility model is not limited to this.
Embodiment 1:
With reference to Fig. 1, the thick film heater of present embodiment comprises heated substrates 1, sealing plate 3 and temperature-sensitive pipe, be printed with thick film circuit 2 on the one side of heated substrates 1, one end of heated substrates 1 is provided with the external contact 5 for thick film circuit 2 cablings, the end that heated substrates 1 is provided with external contact 5 is provided with first link 6 for mounting flange 8, be provided with between first link 6 and the external contact 5 the welding distance is installed, in order to guarantee the not soldered damage of thick film circuit.For reaching the purpose that thick film circuit does not damage, also can be at first link, 6 places of heated substrates 1 welding bar in advance, and then print thick film circuit 2, realize the linkage function of first link 6 by the welding bar.Sealing plate 3 is provided with the groove 4 for external contact cabling, and the depressed part of groove 4 is relative with the position of external contact 5, and groove 4 is provided with second link 7 for mounting flange 8.Groove 4 is arch projectioies of outside die casting on sealing plate 3, and a side of groove 4 is uncovered, and groove 4 uncovered ends are second link 7, and namely sealing plate 3 one ends are tabular, and the other end is the arch projection.
Heated substrates 1 and sealing plate 3 are stainless-steel sheet or aluminium alloy plate dull and stereotyped, that have heat conductivility, and the shape of heated substrates 1 and sealing plate 3 can design as required for various common shapes.Heated substrates 1 is provided with the border 1.1 for welded seal plate 3, this border 1.1 is that thick film circuit 2 is in the position of heated substrates 1 reservation, it is the middle part that thick film circuit 2 is printed on heated substrates 1, the outer ring of thick film circuit 2 is border 1.1 parts, heated substrates 1 is tightly connected with sealing plate 3, sealing means can adopt welded seal, bolt seal etc. between heated substrates 1 and the sealing plate 3, can be with reference to sealing means commonly used in the prior art.When heated substrates 1 and sealing plate 3 are tightly connected, be printed with insulating barrier at sealing plate 3, insulating barrier is that glass glaze is silica, be that insulating barrier is arranged on the sealing surface of sealing plate 3 and heated substrates 1 sealing, and on the insulating barrier of sealing plate 3 the coated with thermally conductive layer of silica gel, the thermal conductive silicon glue-line is assisted heated substrates 1 Homogeneouslly-radiating.Heated substrates 1 after being tightly connected and sealing plate 3 form a cavity, and correspondence is provided with external contact 5 in the cavity.Described heater outer surface is coated with the fluorine resin coating layer, and the fluorine resin coating layer has characteristics high temperature resistant, anticorrosion, antiscale, the useful life that is conducive to improve heater.
See figures.1.and.2, heated substrates 1 is tightly connected with sealing plate 3, first link 6 and second link 7 are welded on the ring flange 8, heated substrates 1 after the connection is fixed on the ring flange 8 with sealing plate 3, first link 6 and second link 7 also can be fixed on the shell of liquid to be heated, and the temperature-sensitive pipe links to each other with ring flange 8.Described heater also comprises having same structure secondary heater 10, heater 9 be arranged in parallel with secondary heater 10, heater 9 is connected on the same ring flange 8 with secondary heater 10, and heater 9 is through the veneer thick film heater after the sealing with secondary heater 10.In order to make firm connection the between heater 9 and secondary heater 10 and the ring flange 8, can install and fix clip at heater 9 and secondary heater 10.
Embodiment 2:
The difference of present embodiment and embodiment 1 is the Position Design of groove 4, and other structure please refer to embodiment 1, specifically describes the design of present embodiment further groove 4 below.With reference to Fig. 3, groove 4 is arranged on a sidepiece of sealing plate 3 one ends, and is corresponding, and external contact 5 is arranged on a sidepiece of heated substrates 1 one ends, wherein, and the side of relative groove one side on the opening end that second link 7 comprises groove 4 and the sealing plate 3.With reference to Fig. 4, described heater also comprises having same structure secondary heater 12, and heater 11 be arranged in parallel with secondary heater 12, heater 11 and secondary heater 12 be provided with sealing plate one side install in opposite directions, impel the installation of heater compacter.Heater 11 is connected on the same ring flange 8 with secondary heater 12, and heater 11 is through the veneer thick film heater after the sealing with secondary heater 12.
Embodiment 3:
The difference of present embodiment and embodiment 1 is the shape of groove 4, and other structure please refer to embodiment 1, specifically describes the design of present embodiment further groove 4 below.With reference to Fig. 5, described groove 4 is the uncovered square groove shape body of a side, three side channel limits of groove 4 and sealing plate 3 welding, and groove 4 uncovered ends are second link 7.Groove 4 and sealing plate 3 be with wide, or be arranged on a sidepiece of sealing plate 3 one ends, corresponding, external contact 5 is arranged on the relevant position of heated substrates 1.Also can comprise the secondary heater of same structure as embodiment 3 described heaters, the groove 4 between heater and the secondary heater can be communicated with, and forms a cavity.
Embodiment 4:
With reference to Fig. 6-7, the thick film heater of present embodiment comprises the secondary heater, connector 13, temperature-sensitive pipe 14 of same structure and fixing clip 15, heater 16 and secondary heater 17 include heated substrates 1 and sealing plate 3, and wherein the hermetically-sealed construction between the structure of heated substrates 1 and heated substrates 1 and the sealing plate 3 is with reference to the description among the embodiment 1.Difference is that sealing plate 3 does not arrange independently groove, in other words, two sealing plates 3 share a groove, and groove is connector 13, change sentence again and say, sealing plate 3 is if be provided with groove, and then two grooves on two sealing plates 3 are communicated with, and form the space of an integral body connection.The length of sealing plate 3 is less than the length of heated substrates 1, make on the heated substrates 1 that sealing plate 3 sealed external contact 5 exposed, link to each other by connector 13 between two sealing plates 3, the longitudinal section of connector 13 is U-shaped, the two ends of U-shaped connector 13 respectively with heater 16 and secondary heater 17 on sealing plate 3 welding, two sealing plates 3 and two heated substrates 1 after the welding are tightly connected, and external contact 5 is exposed in the space of connector 13 and two heated substrates 1 formation.Wherein first link 6 is provided with the side of an end of external contact 5 for heated substrates 1, second link 7 is the both sides trough rim of the U-shaped openend of connector 13, present embodiment is welded on thick film heater on the ring flange 8 by first link 6 and second link 7, and firmly connects by fixing 15 pairs of two veneer heaters of clip.Wherein temperature-sensitive pipe 14 is connected on the ring flange 8, and wherein plate 3 sealing together is provided with a probe grooves 18 that is used for installing the anti-dry probe with connector 13 junctions.
The thick film heater of embodiment 1-4 is all independent sealed on sealing plate with the monolithic heated substrates in the utility model, utilize the thermal conductive silicon glue-line to increase heat conduction between heated substrates and the sealing plate, and directly link to each other with ring flange or other seal with second link by first link, whole heater is immersed in the liquid to be heated, and external contact is exposed in the space of groove, thereby can be from housing or the outside external contact of directly handling thick film heater of ring flange, realized outer contacting means of spot welds lead operation on the heated substrates after move, make thick film heater can carry out the spraying of high temperature fluorine resin coating earlier, the external contact of welding, back, effectively guarantee the bonding strength between external contact and the high temperature wire, farthest optimized heater whole erection process.Because heated substrates directly links to each other with housing or ring flange with sealing plate, increased the tightness degree that heater is connected with housing or ring flange, at utmost utilized the space of enclosure interior.
In the above-mentioned explanation, all special instructions that do not add all adopt technological means of the prior art.
Claims (10)
1. thick film heater, comprise that one has the heated substrates of heat conductivility, be printed with thick film circuit on the one side of heated substrates, one end of heated substrates is provided with the external contact for the thick film circuit cabling, it is characterized in that, described heated substrates is printed with the sealing plate that is sealed with on the one side of thick film circuit for thick film circuit on the heated sealed substrate, the end that heated substrates is provided with external contact is provided with first link for mounting flange, be provided with the groove for external contact cabling on the described sealing plate, the depressed part of groove is relative with the position of external contact, and groove is provided with second link for mounting flange.
2. thick film heater according to claim 1 is characterized in that, described first link and second link are welded on the ring flange.
3. thick film heater according to claim 1 is characterized in that, described groove is the arch projection of outside die casting on sealing plate, and a side of groove is uncovered, and the end that groove is uncovered is second link.
4. thick film heater according to claim 1 is characterized in that, described groove is the uncovered square groove shape body of a side, three side channel limits of groove and sealing plate welding, and the end that groove is uncovered is second link.
5. according to claim 3 or 4 described thick film heaters, it is characterized in that, described groove is arranged on a sidepiece of sealing plate one end, corresponding, external contact is arranged on a sidepiece of heated substrates one end, the side of relative groove one side on the opening end that described second link comprises groove and the sealing plate.
6. thick film heater according to claim 1 is characterized in that, described heater also comprises having the same structure secondary heater, and heater and secondary heater be arranged in parallel, and heater and secondary heater are connected on the same ring flange.
7. thick film heater according to claim 6 is characterized in that, described heater and secondary heater be provided with sealing plate one side install in opposite directions.
8. thick film heater according to claim 7 is characterized in that, the groove on the described heater is communicated with groove on the secondary heater.
9. thick film heater according to claim 8 is characterized in that, it is the connector of U-shaped that groove after the described connection forms the longitudinal section, the two ends of U-shaped connector respectively with heater on sealing plate and the welding of the sealing plate on the secondary heater.
10. thick film heater according to claim 1 is characterized in that, described first link is that heated substrates is provided with the side of external contact one end or the welding bar that welds at heated substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231070 CN203219516U (en) | 2013-04-28 | 2013-04-28 | Thick film heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231070 CN203219516U (en) | 2013-04-28 | 2013-04-28 | Thick film heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203219516U true CN203219516U (en) | 2013-09-25 |
Family
ID=49209016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320231070 Withdrawn - After Issue CN203219516U (en) | 2013-04-28 | 2013-04-28 | Thick film heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203219516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698796A (en) * | 2019-03-11 | 2020-09-22 | 南京银纳新材料科技有限公司 | Preparation method of repeated scratch-resistant silver nanowire film heater |
-
2013
- 2013-04-28 CN CN 201320231070 patent/CN203219516U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111698796A (en) * | 2019-03-11 | 2020-09-22 | 南京银纳新材料科技有限公司 | Preparation method of repeated scratch-resistant silver nanowire film heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130925 Effective date of abandoning: 20140702 |
|
| RGAV | Abandon patent right to avoid regrant |