CN203136203U - Thick film liquid heater - Google Patents
Thick film liquid heater Download PDFInfo
- Publication number
- CN203136203U CN203136203U CN 201320113920 CN201320113920U CN203136203U CN 203136203 U CN203136203 U CN 203136203U CN 201320113920 CN201320113920 CN 201320113920 CN 201320113920 U CN201320113920 U CN 201320113920U CN 203136203 U CN203136203 U CN 203136203U
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- thick film
- heated substrates
- sealing plate
- heater
- heated
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Abstract
The utility model relates to a thick film liquid heater. The thick film liquid heater comprises a heating substrate; one surface of the heating substrate is printed with a thick film circuit; a sealing plate which is used for sealing the thick film circuit on the heating substrate is sealed on the surface of the heating substrate where the thick film circuit is printed; the sealing plate is printed with an insulating layer; the insulating layer is arranged on the sealing surface where the sealing plate is sealed with the heating substrate; the insulating layer is coated with a heat-conduction silica gel layer; the sealing plate is outwards die-casted with a groove used for the wiring of the thick film circuit; and the position of the groove is matched with the position of an external-connection contact of the thick film circuit. According to the thick film liquid heater of the utility model, the heat-conduction silica gel layer is adopted to increase heat conduction; the sealing plate is die-casted with the groove used for the wiring of the thick film circuit; and the heater can be immersed in a liquid to be heated. Thus, not only is the heat energy generated by the heater can be effectively utilized, but also the heat exchange area of the heater is increased manyfold; the heat dissipation efficiency of the heater is improved; the work temperature of the heater is effectively lowered; the anti-fouling performance of the heater is improved; and the service life of the heater can be prolonged.
Description
Technical field
The utility model relates to fluid electric heating device technical field, relates in particular to a kind of thick film liquid heater.
Background technology
The thick film heating technique is at a substrate; as adopting the thick film silk-screen printing technique on stainless-steel sheet, pottery, glass or the aluminium alloy plate; successively print 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 is ripe gradually at present, has the advantages that heat conductivility is good, area of dissipation is big and security performance is high, is widely used in heating fields such as various household electrical appliances, instruments because its heat efficiency is high.
But, the present designing requirement that does not also reach utilization in full force and effect for efficient and the performance of fluid heating, as electric kettle of the prior art, the one side of its heating plate directly contacts with fluid, and another side contacts with exterior part and air, causes the waste of part of waste heat.And for example be 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 one end need and fluid isolation to be heated to require because of energising, heating plate one end that general employing will be established external contact directly is isolated in the water heater outside, to avoid electric leakage, such design, the heat exchange of heater is confined on two faces of heating plate, and wasted the heat exchange that is provided with external contact heating plate one end in use, fail fully effectively to utilize its heat efficiency.And, this heater in use 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 easily produce incrustation scale or cause heater texturing and burn above-mentioned useful life of all reducing heater.
Summary of the invention
Technical problem to be solved in the utility model is to have heating plate working temperature height, radiating efficiency is low, yielding and heat efficiency utilance is low the problems referred to above at existing heater, provides that a kind of heating plate working temperature is lower, radiating efficiency is high, the thick film liquid heater of heat efficiency utilance height, long service life and ease of assembly.
For addressing the above problem, the technical solution of the utility model is:
A kind of thick film liquid heater, comprise that one has the heated substrates of heat conductivility, be printed with thick film circuit on the one side of heated substrates, 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, be printed with insulating barrier on the sealing plate, insulating barrier is arranged on the sealing surface of sealing plate with the heated substrates sealing, is coated with the thermal conductive silicon glue-line on the insulating barrier; Outside die casting is useful on the groove of thick film circuit cabling on the described sealing plate, and the position of groove location and the external contact of thick film circuit is complementary.
Be compared to prior art, thick film liquid heater of the present utility model is sealed in the monolithic heated substrates on the sealing plate, utilize the thermal conductive silicon glue-line to increase heat conduction between heated substrates and the sealing plate, and the die casting groove is used for the thick film circuit cabling on sealing plate, make the heater block in the whole heater all can be immersed in the liquid to be heated, the heat energy that has not only effectively utilized heater to produce, avoided heat waste, and increase at double the heat exchange area of heater, further improved the radiating efficiency of heater, thereby effectively reduced the working temperature of heater, improved anti-scaling property and the useful life of heater.
Preferably, described sealing plate is tabular, and heated substrates is provided with the border for the welded seal plate, and sealing plate is with the border welding of heated substrates.Flat sealing plate adopts the fixing seals of minimum area to seal thick film circuit, makes area of dissipation maximization and the rate of heat dissipation of heater the highest.
Preferably, described sealing plate is the groove shape, and the trough rim of projection is welded on four sides of heated substrates on the sealing plate.The sealing plate of groove shape has guaranteed the bonding strength between sealing plate and the heated substrates.
Preferably, described heater also comprises having same structure second heated substrates, heated substrates and second heated substrates be arranged in parallel, heated substrates and second heated substrates removably connect by clip, described clip is provided with first clamping part, second clamping part and interval maintaining part, first clamping part is used for the clamping heated substrates, and second clamping part is used for clamping second heated substrates, and maintaining part is for the spacing before control heated substrates and second heated substrates at interval.The detachable connection of two heated substrates, be used for satisfying the requirement of different heating device heating power, the clip design of simple structure, be conducive to the dismounting of two heated substrates with fixing, the interval maintaining part makes two heated substrates keep certain spacing on the clip, guarantee the area of dissipation of two heated substrates under co-operation, effectively raise radiating efficiency.
Preferably, the cross section of described groove is circular, and groove is provided with wire hole, is welded with stainless-steel pipe on the wire hole.The cross section circular groove is conducive to the welding of stainless-steel pipe.
Preferably, the other end of described stainless-steel pipe is connected with ring flange, and stainless-steel pipe welds with ring flange or is threaded.Ring flange directly links to each other with the housing of liquid to be heated, is used for the external of heater inner lead, and the heater block in the whole heater all can be immersed in the liquid to be heated, avoids the waste of heat.
Preferably, also be provided with the installing hole for temperature signal lead cabling on the described ring flange, be connected with stainless-steel pipe on the installing hole, temperature sensor is installed on the stainless-steel pipe.Temperature sensor is for detection of the temperature of liquid to be heated, and will be for the lead that transmits testing result along the inner trend of stainless-steel pipe.
Preferably, described heater outer surface is coated with the fluorine resin coating layer.The fluorine resin coating layer has characteristics high temperature resistant, anticorrosion, antiscale, the useful life that is conducive to improve heater.
Description of drawings
Fig. 1 is the structural representation of heated substrates in the utility model thick film liquid heater.
Fig. 2 is the structural representation of the utility model thick film liquid heater.
Fig. 3 is the section structure for amplifying schematic diagram of the utility model thick film liquid heater.
Fig. 4 be in the utility model thick film liquid heater sealing plate structural representation.
Fig. 5 be among the utility model embodiment 2 sealing plate structural representation.
Fig. 6 is the structural representation of the utility model embodiment 3 thick film liquid heaters.
Fig. 7 is the side-looking structural representation of the utility model embodiment 3 thick film liquid heaters.
Fig. 8 is the structural representation of the utility model embodiment 3 thick film liquid heater clips.
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. 1-3, thick film liquid heater of the present utility model comprises that one has the heated substrates 1 of heat conductivility, heated substrates 1 is stainless-steel sheet or the aluminium alloy plate on plane, be printed with thick film circuit 2 on the one side of heated substrates 1, heated substrates 1 is provided with the border 1.1 for welded seal plate 3, this border 1.1 is thick film circuit 2 in the position that heated substrates 1 is reserved, and namely thick film circuit 2 is printed on the middle part of heated substrates 1, and the outer ring of thick film circuit 2 is border 1.1 parts.With reference to Fig. 2-3, heated substrates 1 is printed with the sealing plate 3 that is sealed with on the one side of thick film circuit 2 for thick film circuit 2 on the heated sealed substrate 1, sealing plate 3 is tabular, be printed with insulating barrier 3.1 on the sealing plate 3, insulating barrier 3.1 is silica for glass glaze, be that insulating barrier 3.1 is arranged on the sealing surface of sealing plate 3 and heated substrates 1 sealing, sealing plate 3 welds with the border 1.1 of heated substrates 1.When heated substrates 1 welds with sealing plate 3, coated with thermally conductive layer of silica gel 3.2 on the insulating barrier 3.1 of sealing plate 3, thermal conductive silicon glue-line 3.2 auxiliary heated substrates 1 Homogeneouslly-radiatings.
With reference to Fig. 1-4, outside die casting is useful on the groove 4 of thick film circuit cabling on the sealing plate 3, and the position of groove 4 positions and thick film circuit 2 external contacts 5 is complementary.The cross section of groove 4 is circular, and groove 4 is provided with wire hole, is welded with stainless-steel pipe 6 on the wire hole, the other end of stainless-steel pipe 6 is connected with ring flange 7, stainless-steel pipe 6 welds with ring flange 7 or is threaded, and adopts when being threaded, and answers cushioning O RunddichtringO.Also be provided with the installing hole for temperature signal lead cabling on the ring flange 7, be connected with stainless-steel pipe 6.1 on the installing hole, on the stainless-steel pipe 6.1 temperature sensor is installed, the heater outer surface is coated with the fluorine resin coating layer, the fluorine resin coating layer has characteristics high temperature resistant, anticorrosion, antiscale, the useful life that is conducive to improve heater.
With reference to Fig. 1-4, thick film liquid heater of the present utility model is made as follows:
Step 1: according to the power designs requirement of heated substrates 1, select the area size of heated substrates 1, the selection of thickness then is directly proportional with heated substrates 1 area size according to power.Power is big, the corresponding increasing of the area of heated substrates 1, and the thickness of heated substrates 1 is corresponding thickening also, and it is too high and cause heated substrates 1 to occur bending and deformation to reduce when heating temperature like this, and thick film resistive heating circuit power is generally 40～60W/C ㎡.The area of heated substrates 1 and thickness can be selected according to the needs of user power, and the area power with every square centimeter in the present embodiment is 25w, and thickness is that 1.2-2mm is that example describes.It is the stainless-steel sheet of SUS444 or 316 that heated substrates 1 and sealing plate 3 are selected model, the model that adopts than traditional silk-screened because of the stainless-steel sheet of these two models is 430,304, the adhesion strength of SU314 stainless-steel sheet and resistance slurry is stronger, coefficient of thermal expansion is littler, antiseptic and rustproof performance is better, and thermal conduction effect is better.
Step 2: the design needs according to step 1 shut out the identical rectangular flat plate of two block sizes with stainless-steel sheet, and one as heated substrates 1, and another piece is as sealing plate 3.A selection wherein stainless-steel sheet goes out the groove 4 that a cross section is circle in the place's die casting of a rectangular end angle, and the cross sectional shape of its further groove 4 also can be selected rectangle, square etc.
Step 3: carry out silk screen printing dielectric glass glaze at heated substrates 1; and according to heating resistor line map printing heating resistor and conductor paste; republish the insulating protective layer glass glaze; make to form thick film circuit 2, and when the printed glass glaze, reserve the welding interface 1.1 of 7-11mm at heated substrates 1 periphery.Making at sealing plate 3 printing insulating barriers 3.1 is glass glaze, then heated substrates 1 and sealing plate 3 is sent into 850 degree high temperature sintering furnaces and carries out sintering.
Step 4: on the external contact 5 of heated substrates 1, connect the high temperature wire of corresponding specification according to power with the high strength soldering, after use high-temperature insulation silica gel solder joint position sealing and reinforcing again.
Step 5: select two stainless-steel pipes, be stainless-steel pipe 6 and the stainless-steel pipe 6.1 among Fig. 4, bend to the angle that needs or select straight tube, an end of stainless-steel pipe 6 and the welding of the wire hole on the groove 4, the other end welds with ring flange 7 or is threaded.One end of stainless-steel pipe 6.1 and ring flange 7 welding or be threaded, mounting temperature sensor on the stainless-steel pipe 6.1, and temperature sensor is installed in the near side (ns) of heated substrates 1.
Step 6: obtain heated substrates 1 and sealing plate 3 by above-mentioned steps, the heated substrates 1 that is printed with thick film circuit 2 one sides is bonding according to the position of groove 4 and external contact 5 with sealing plate 3, and smear the High temperature and insulating heat conductive silicone grease at the sealing surface of sealing plate 3, form thermal conductive silicon glue-line 3.2, and high temperature wire passed ring flange 7 through stainless-steel pipe 6 from the groove 4 of sealing plate 3, two plates merging back is welded with temperature reduction technology or adhering and sealing is fixed, and welding manner can adopt the weldering of argon fluorine, Laser Welding etc.The heat conductive insulating silicone grease can play the more uniform sealing plate 3 that passes to of the heat of heated substrates 1, can make sealing plate 3 more uniform heat radiations, also plays the insulation protection effect simultaneously.
Step 7: smear the high-temperature resistant anti-corrosive silicone grease at stainless-steel pipe 6 and weld part and the stainless-steel pipe 6.1 of groove 4 Top Leading-out Holes with the weld part of ring flange 7, strengthen the antiseptic property of welding position, increase the service life.
Step 8: the whole heater surfaces process blasting treatment that welding is fixed at last, sintering behind the spraying fluorine resin coating layer, the fluorine resin coating layer has the characteristics of high temperature resistant, anticorrosion and antiscale.
The thick film liquid heater of present embodiment is independent sealed on sealing plate 3 with monolithic heated substrates 1, the heat of utilizing thermal conductive silicon glue-line 3.2 to increase between heated substrates 1 and the sealing plate 3 is conducted, and link to each other with ring flange 7 with sealing plate 3 with stainless-steel pipe 6.1 by stainless-steel pipe 6, lead in the heater can be led to outside the ring flange 7 by groove 4 and the stainless-steel pipe 6 through sealing plate 3 from external contact 5, reach the isolation fully of liquid to be heated and power supply, and the heater block in the whole heater all can be immersed in the liquid to be heated.Flat sealing plate 3 adopts the fixing seals of minimum area to seal thick film circuit 2, makes area of dissipation maximization and the rate of heat dissipation of heater the highest.Wherein ring flange 7 directly links to each other with the housing of liquid to be heated, be used for the external of heater inner lead, heater block in the whole heater all can be immersed in the liquid to be heated, the heat efficiency can be reached more than 99%, with respect to the heat efficiency of conventional heater significant lifting is arranged.
Present embodiment is to be that 25w is that example describes with every square centimeter area power on the every heated substrates, and in the prior art owing to be two heated substrates applying welded seals, if the heating power of every heated substrates is identical, then every square centimeter area power is far longer than 25w, therefore, when heating, the temperature of heated substrates will be higher than the temperature of heated substrates in the present embodiment far away in the prior art.Simultaneously, can be according to bubble and the sound of two kinds of heaters in heating process, the temperature rise situation when judging its heating also can be judged the working temperature of the heated substrates in the present embodiment far below the temperature of heated substrates in the prior art.
Embodiment 2:
The thick film liquid heater of present embodiment and the difference among the embodiment 1 are Welding Structure and the heated substrates 1 and sealing plate 3 self structure of heated substrates 1 and sealing plate 3, other structure and manufacture method all with embodiment 1 in roughly the same, please refer to embodiment 1, do not repeat them here, describe the concrete Welding Structure among the embodiment 2 below in detail.
With reference to Fig. 5, sealing plate 3 is the groove shape, be shallow box-like, on the sealing plate 3 projection trough rim 8 be welded on four sides of heated substrates 1.The sealing plate 3 of groove shape has guaranteed the bonding strength between sealing plate 3 and the heated substrates 1, its beneficial effect is with reference to embodiment 1, but all sealed plate 3 coatings of four sides because of its heated substrates 1, employing is every empty welded seal, its heat dispersion slightly reduces than the heat dispersion among the embodiment 1, but be compared to prior art, then be significantly improved.
Realize embodiment 2 when sky seals, also can adopt the border 1.1 parts bending that to reserve to make heated substrates 1 be groove shape body, be that thick film circuit 2 is printed on the groove bottom of heated substrates 1, the inboard on border 1.1 is used for and sealing plate 3 welding, and adopt tabular with sealing plate 3, also can reach the effect of above-mentioned groove shape sealing plate 3.
Embodiment 3:
With reference to Fig. 6-8, present embodiment will finally obtain two identical heated substrates by embodiment 1 or embodiment 2 respectively, and two identical heated substrates are installed on the same ring flange 7, and on ring flange 7 three installing holes of die casting, be respectively applied to install heated substrates 9, second heated substrates 10 and the temperature sensor.Heated substrates 9 and second heated substrates 10 be arranged in parallel, and heated substrates 9 and second heated substrates 10 removably connect by clip 11.Clip 11 is provided with first clamping part 12, second clamping part 13 and interval maintaining part 14, clip 11 is for to bend to fixedly clip of m type by stainless-steel sheet, and in the middle of heated substrates, carry out clip and fix, wherein first clamping part 12 is used for clamping heated substrates 9, second clamping part 13 is used for clamping second heated substrates 10, and maintaining part 14 is used for control heated substrates 9 and second heated substrates 10 spacing before at interval.Two detachable connections of heated substrates, be used for satisfying the requirement of different heating device heating power, the clip design of simple structure, be conducive to the dismounting of two heated substrates, the interval maintaining part makes two heated substrates keep certain spacing on the clip, guarantee the area of dissipation of two heated substrates under co-operation, effectively raise radiating efficiency.
The heater of two heated substrates assemblings in the present embodiment, owing to influencing each other between two heated substrates, its heat dispersion will descend to some extent compared to the heater of monolithic heated substrates, but in contrast to the heater of two heated substrates applying welded seals in the prior art, its area of dissipation with regard to whole increase by one times, therefore, when heating, the temperature of heated substrates will be higher than the temperature of heated substrates in the present embodiment far away in the prior art.Simultaneously, the temperature rise of volume in finite time and the conversion of heater self-radiating by liquid to be heated, heater in the present embodiment is when work as can be known, its working temperature only exceeds the 20-25 degree than the temperature of liquid to be heated, and the heating-up temperature of general rapid heater is no more than 75 degree, so the Controllable Temperature of the interior heated substrates of heater is in 100 degree in the present embodiment, thereby effectively reduced the working temperature of heater, overcome the shortcoming of the yielding and easy fouling of heater surfaces of heated substrates, anti-scaling property and the useful life of having improved heater.
In the above-mentioned explanation, all special instructions that do not add all adopt technological means of the prior art.
Claims (8)
1. thick film liquid heater, comprise that one has the heated substrates of heat conductivility, be printed with thick film circuit on the one side of heated substrates, 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, be printed with insulating barrier on the sealing plate, insulating barrier is arranged on the sealing surface of sealing plate with the heated substrates sealing, is coated with the thermal conductive silicon glue-line on the insulating barrier; Outside die casting is useful on the groove of thick film circuit cabling on the described sealing plate, and the position of groove location and the external contact of thick film circuit is complementary.
2. thick film liquid heater according to claim 1 is characterized in that, described sealing plate is tabular, and heated substrates is provided with the border for the welded seal plate, and sealing plate is with the border welding of heated substrates.
3. thick film liquid heater according to claim 1 is characterized in that, described sealing plate is the groove shape, and the trough rim of projection is welded on four sides of heated substrates on the sealing plate.
4. according to claim 2 or 3 described thick film liquid heaters, it is characterized in that, described heater also comprises having same structure second heated substrates, heated substrates and second heated substrates be arranged in parallel, heated substrates and second heated substrates removably connect by clip, described clip is provided with first clamping part, second clamping part and interval maintaining part, first clamping part is used for the clamping heated substrates, second clamping part is used for clamping second heated substrates, and maintaining part is used for control heated substrates and second heated substrates spacing before at interval.
5. thick film liquid heater according to claim 1 is characterized in that, the cross section of described groove is circular, and groove is provided with wire hole, is welded with stainless-steel pipe on the wire hole.
6. thick film liquid heater according to claim 5 is characterized in that, the other end of described stainless-steel pipe is connected with ring flange, and stainless-steel pipe welds with ring flange or is threaded.
7. thick film liquid heater according to claim 6 is characterized in that, also is provided with the installing hole for temperature signal lead cabling on the described ring flange, is connected with stainless-steel pipe on the installing hole, and temperature sensor is installed on the stainless-steel pipe.
8. thick film liquid heater according to claim 1 is characterized in that, described heater outer surface is coated with the fluorine resin coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113920 CN203136203U (en) | 2013-03-13 | 2013-03-13 | Thick film liquid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113920 CN203136203U (en) | 2013-03-13 | 2013-03-13 | Thick film liquid heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203136203U true CN203136203U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320113920 Expired - Lifetime CN203136203U (en) | 2013-03-13 | 2013-03-13 | Thick film liquid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203136203U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111888076A (en) * | 2018-04-29 | 2020-11-06 | 姜丽丽 | Non-invasive nursing device |
-
2013
- 2013-03-13 CN CN 201320113920 patent/CN203136203U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111888076A (en) * | 2018-04-29 | 2020-11-06 | 姜丽丽 | Non-invasive nursing device |
| CN111888075A (en) * | 2018-04-29 | 2020-11-06 | 姜丽丽 | Non-invasive nursing device |
| CN111888075B (en) * | 2018-04-29 | 2022-04-22 | 钱才英 | Non-invasive nursing device |
| CN111888076B (en) * | 2018-04-29 | 2022-04-29 | 钱才英 | Non-invasive nursing device |
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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: 20130814 Effective date of abandoning: 20150121 |
|
| RGAV | Abandon patent right to avoid regrant |