CN203120187U - Thick film heater - Google Patents
Thick film heater Download PDFInfo
- Publication number
- CN203120187U CN203120187U CN 201320115794 CN201320115794U CN203120187U CN 203120187 U CN203120187 U CN 203120187U CN 201320115794 CN201320115794 CN 201320115794 CN 201320115794 U CN201320115794 U CN 201320115794U CN 203120187 U CN203120187 U CN 203120187U
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- heated substrates
- thick film
- groove
- heater
- heated
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Abstract
The utility model relates to a thick film heater which comprises a first heating substrate and a second heating substrate, wherein one face of the first heating substrate and one face of the second heating substrate are respectively provided with a thick film circuit in a printing mode, the first heating substrate is attached to the second hearing substrate in an opposite mode, edges of the heating substrates are connected in a sealed mode, a first groove which is used for enabling the thick film circuit to conduct wire passing on the second heating substrate is outward formed through die casting in the face, provided with the thick film circuit in the printing mode, of the first heating substrate, a second groove which is used for enabling the thick film circuit to conduct wire passing on the first heating substrate is outward formed through die casting in the face, provided with the thick film circuit in the printing mode, of the second heating substrate, the first groove and the second groove are respectively provided with a wire outlet hole which is connected with a guiding pipe, and the other end of the guiding pipe is connected with a flange plate. According to the thick film heater, heat energy produced by the heater is effectively utilized, the heat exchange area of the heater is enlarged, heat dissipation efficiency of the heater is improved, the working temperature of the heater is reduced, anti-scaling performance of the heater is improved, and the service life of the heater is prolonged.
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 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, two heating plates of its general employing are fitted and sealing, 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, the heating plate that such design is provided with external tip side in use just can not carry out heat exchange with liquid to be heated, fail fully effectively to utilize its heat efficiency, caused the waste of part of waste heat.Simultaneously, because its part is immersed in the liquid to be heated, the working temperature on the heating plate be difficult for to reduce, and the heat dispersion of whole heater is impacted, and is unfavorable for the long-term use of 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 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, a kind of thick film heater of heat efficiency utilance height and long service life.
For addressing the above problem, the technical solution of the utility model is:
A kind of thick film heater, comprise first heated substrates and second heated substrates with heat conductivility, all be printed with thick film circuit on the one side of first heated substrates and second heated substrates, thick film circuit is provided with the external contact for external wire, the one side that first heated substrates is printed with thick film circuit and second heated substrates are printed with relative applying of one side of thick film circuit, two heated substrates are tightly connected in edge, described first heated substrates is printed with first groove that outside die casting on the one side of thick film circuit is useful on thick film circuit cabling on second heated substrates, first groove is fitted on the external contact of second heated substrates, second heated substrates is printed with second groove that outside die casting on the one side of thick film circuit is useful on thick film circuit cabling on first heated substrates, and second groove is fitted on the external contact of first heated substrates; Be equipped with wire hole on described first groove and second groove, be connected with on the wire hole for the conduit that transmits lead, the other end of conduit is connected with the ring flange that installs and fixes for thick film heater.
Be compared to prior art, a kind of thick film heater of the present utility model is with the sealing of fitting relatively of two heated substrates, and respectively on two heated substrates the die casting groove be used for the thick film circuit cabling, the external wire of thick film circuit is directly passed from ring flange by conduit, thereby 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 increased the heat exchange area of heater, further improved the radiating efficiency of heater, thereby reduced the working temperature of heater, improved anti-scaling property and the useful life of heater.
Preferably, be coated with the thermal conductive silicon glue-line on the one side that described first heated substrates and second heated substrates are fitted.The heat of utilizing the thermal conductive silicon glue-line to increase between two heated substrates is conducted, and is conducive to improve the heat dispersion of heated substrates, has improved insulation effect between the two simultaneously.
Preferably, described first heated substrates and second heated substrates are square stainless-steel sheet, and first heated substrates and second heated substrates are provided with the border for welded seal, the border welding of the border of first heated substrates and second heated substrates.When design, remain for the border of welded seal in advance, the influence of avoiding two heated substrates when welding thick film circuit to be caused can guarantee weld strength again simultaneously.
Preferably, described first heated substrates and second heated substrates are provided with the border for sealing, be respectively equipped with a plurality of through holes on the border of first heated substrates and second heated substrates, be provided with seal washer between the border of first heated substrates and second heated substrates, seal washer be provided with heated substrates on corresponding through hole, corresponding through hole is fastenedly connected by screw element on first heated substrates, seal washer and second heated substrates.In when design, remain for sealing the border of punching in advance, the influence of avoiding two heated substrates when welding, thick film circuit to be caused, and utilize seal washer to guarantee sealing property between two heated substrates.
Preferably, the cross section of described first groove and second groove is circle, and conduit is stainless-steel pipe, and stainless-steel pipe welds with ring flange or is threaded.The cross section circular groove is conducive to the welding of stainless-steel pipe, and being connected be between conduit and groove, conduit and the ring flange is tightly connected, and guarantees that water power isolates.
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 after the first heated substrates moulding among a kind of thick film heater embodiment 1 of the utility model.
Fig. 2 is the structural representation of a kind of thick film heater embodiment 1 of the utility model.
Fig. 3 is the left TV structure schematic diagram of Fig. 2.
Fig. 4 is the partition structural representation of a kind of thick film heater embodiment 2 of the utility model.
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.
With reference to Fig. 1-3, a kind of thick film heater of the present utility model comprises first heated substrates 1, second heated substrates 2, conduit 5 and ring flange 6, first heated substrates 1 and second heated substrates 2 are stainless-steel sheet or the aluminium alloy plates with heat conductivility, plane, and adopting square stainless-steel sheet in the utility model is that example describes.All be printed with thick film circuit 3 on the one side of first heated substrates 1 and second heated substrates 2, thick film circuit 3 is provided with the external contact 4 for external wire, first heated substrates 1 and second heated substrates 2 are provided with the border 7 for welded seal, border 7 general reservations are of a size of 8-10mm, this border 7 for thick film circuit 3 in position that heated substrates is reserved, it is the middle part that thick film circuit 3 is printed on heated substrates, the outer ring of thick film circuit 3 is border 7 parts, in order to the influence of avoiding two heated substrates when welding, thick film circuit 3 to be caused, can guarantee weld strength again simultaneously.The one side that first heated substrates 1 is printed with thick film circuit 3 and second heated substrates 2 are printed with relative applying of one side of thick film circuit 3, and 7 places' welded seals connect two heated substrates on the border, also can adopt other bonding mode, do not repeat them here.Be coated with the thermal conductive silicon glue-line on the one side that first heated substrates 1 and second heated substrates 2 are fitted, the heat of utilizing the thermal conductive silicon glue-line to increase between two heated substrates is conducted, and auxiliary heated substrates heat radiation increases insulation property simultaneously.
Described external contact 4 is arranged on a side of heated substrates bottom, and the opposite side of heated substrates bottom is used for the die casting groove, and the position of groove is concordant with external contact 4.First heated substrates 1 is printed with first groove 1.1 that outside die casting on the one side of thick film circuit 3 is useful on thick film circuit 3 cablings on second heated substrates 2, first groove 1.1 is fitted on the external contact 4 of second heated substrates 2, second heated substrates 2 is printed with second groove, 2.1, the second grooves 2.1 that outside die casting on the one side of thick film circuit 3 is useful on thick film circuit 3 cablings on first heated substrates 1 and is fitted on the external contact 4 of first heated substrates 1.
Be equipped with wire hole on described first groove 1.1 and second groove 2.1, be connected with on the wire hole for the conduit 5 that transmits lead, the other end of conduit 5 is connected with the ring flange 6 that installs and fixes for thick film heater, conduit 5 welds with ring flange 6 or is threaded, when employing is threaded, answer cushioning O RunddichtringO.The cross section of first groove 1.1 and second groove 2.1 is circle, and conduit 5 is stainless-steel pipe, and conduit welds with ring flange 6 or is threaded.Smear the high-temperature resistant anti-corrosive silicone grease at conduit 5 and weld part and the stainless-steel pipe 6.1 of groove Top Leading-out Hole with the weld part of ring flange 6, strengthen the antiseptic property of welding position, increase the service life.Also be provided with the installing hole for temperature signal lead cabling on the ring flange 6, 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, and 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. 1-3, a kind of thick film heater of the present utility model is made as follows:
Step 1: according to the power designs requirement of two heated substrates, select the area size of heated substrates, the selection of thickness then is directly proportional with heated substrates area size according to power.Power is big, the corresponding increasing of the area of heated substrates, and the thickness of heated substrates is corresponding thickening also, and it is too high and cause heated substrates 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 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 1.4-1.6mm is that example describes.It is the stainless-steel sheet of SUS444 or 316 that first heated substrates 1 and second heated substrates 2 are selected model, thickness is 1.5mm, 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.
According to the design needs stainless-steel sheet is shut out the identical rectangular flat plate of two block sizes, two stainless-steel sheets are respectively as first heated substrates 1 and second heated substrates 2.Cast out the cross section in the side pressure of the bottom of first heated substrates 1 and second heated substrates 2 respectively and be circular first groove 1.1 and second groove 2.1, the cross sectional shape of first groove 1.1 and second groove 2.1 also can be selected rectangle, square etc., and at first groove 1.1 and second groove 2.1 wire hole is set.
Step 2: carry out silk screen printing dielectric glass glaze at two heated substrates; and according to heating resistor line map printing heating resistor and conductor paste; republish the insulating protective layer glass glaze; make and form thick film circuit 3; and when the printed glass glaze, reserve the border 7 of 8-10mm at the periphery of two heated substrates; adopt the border of 9mm in the utility model, after two heated substrates sent into 850 degree high temperature sintering furnaces carry out sintering.
Step 3: on the external contact 4 of two heated substrates, 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.Two conduits 5 of stainless steel are bent to the angle that needs or select straight tube, an end of conduit 5 and the welding of the wire hole on the groove, and at welding position coating high-temperature resistant anti-corrosive resin.
Step 4: obtain two first identical shaped heated substrates 1 and second heated substrates 2 by above-mentioned steps, the one side that is printed with thick film circuit 3 is relative, the lead that is welded on first heated substrates, the 1 external contact 4 is passed from second groove 2.1, corresponding, the lead that is welded on second heated substrates, the 2 external contacts 4 is passed from first groove 1.1.Be printed with coated portion thermal conductive silicon glue-line on the one side of thick film circuit 3 at first heated substrates 1 and second heated substrates 2 respectively, with first heated substrates 1 and second heated substrates, 2 sticking each border 7 place's welded seal extremely that are incorporated in.
Step 5: the assembly after the welding has two conduits 5, and the other end of conduit 5 welds with ring flange 6 or is threaded, and adopts when being threaded, and answers cushioning O RunddichtringO.Another installing hole of die casting on ring flange 6, installing hole be used for to connect stainless-steel pipe 6.1, mounting temperature sensor on stainless-steel pipe 6.1, and temperature sensor is installed in the near side (ns) of heated substrates 1.
Step 6: the whole heater surfaces process blasting treatment that welding is fixed at last, spraying fluorine resin coating layer is by 400 degree sintering, and the fluorine resin coating layer has the characteristics of high temperature resistant, anticorrosion and antiscale.
A kind of thick film heater of the present utility model is with the edge sealing and fixing of two heated substrates, the heat of utilizing the thermal conductive silicon glue-line to increase between first heated substrates 1 and second heated substrates 2 is conducted, and link to each other with ring flange 6 by conduit, lead in the heater can be led to outside the ring flange 6 from external contact 4 through different grooves and conduit, 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.Wherein ring flange 6 directly links to each other with the housing of liquid to be heated, be used for the external of heater inner lead, whole heater can be immersed in the liquid to be heated, effectively raise the heat efficiency, first heated substrates 1 and second heated substrates 2 are immersed in the liquid to be heated fully, make first heated substrates 1 and second heated substrates 2 carry out heat exchange with liquid to be heated fully, with respect to the heat efficiency of conventional heater significant lifting is arranged.Simultaneously, also increase the part area of dissipation, avoided heat waste, and then reduced the working temperature of heated substrates.
A kind of thick film heater in the present embodiment and the difference among the embodiment 1 are the mode that is tightly connected between first heated substrates 1 and second heated substrates 2, and the self structure of first heated substrates 1 and second heated substrates 2, other structure and manufacture method and embodiment are roughly the same, please refer to embodiment 1, do not repeat them here, describe the concrete hermetically-sealed construction among the embodiment 2 below in detail.
With reference to Fig. 4, described first heated substrates 1 and second heated substrates 2 are provided with the border 7 for sealing, be respectively equipped with a plurality of through holes 9 on the border 7 of first heated substrates 1 and second heated substrates 2, be provided with seal washer 8 between the border of first heated substrates 1 and second heated substrates 2, seal washer 8 be provided with heated substrates on corresponding through hole 9, through hole 9 is evenly distributed on the border 7 of first heated substrates 1 and second heated substrates 2, and is evenly distributed on the week of seal washer 8.Corresponding through hole 9 is fastenedly connected by screw element on first heated substrates 1, seal washer 8 and second heated substrates 2, and screw element is screw or screw.
In the above-mentioned explanation, all special instructions that do not add all adopt technological means of the prior art.
Claims (7)
1. thick film heater, comprise first heated substrates and second heated substrates with heat conductivility, all be printed with thick film circuit on the one side of first heated substrates and second heated substrates, thick film circuit is provided with the external contact for external wire, the one side that first heated substrates is printed with thick film circuit and second heated substrates are printed with relative applying of one side of thick film circuit, two heated substrates are tightly connected in edge, it is characterized in that, described first heated substrates is printed with first groove that outside die casting on the one side of thick film circuit is useful on thick film circuit cabling on second heated substrates, first groove is fitted on the external contact of second heated substrates, second heated substrates is printed with second groove that outside die casting on the one side of thick film circuit is useful on thick film circuit cabling on first heated substrates, and second groove is fitted on the external contact of first heated substrates; Be equipped with wire hole on described first groove and second groove, be connected with on the wire hole for the conduit that transmits lead, the other end of conduit is connected with the ring flange that installs and fixes for thick film heater.
2. a kind of thick film heater according to claim 1 is characterized in that, is coated with the thermal conductive silicon glue-line on the one side that described first heated substrates and second heated substrates are fitted.
3. a kind of thick film heater according to claim 1, it is characterized in that, described first heated substrates and second heated substrates are square stainless-steel sheet, first heated substrates and second heated substrates are provided with the border for welded seal, the border welding of the border of first heated substrates and second heated substrates.
4. according to the described a kind of thick film heater of claim 1, it is characterized in that, described first heated substrates and second heated substrates are provided with the border for sealing, be respectively equipped with a plurality of through holes on the border of first heated substrates and second heated substrates, be provided with seal washer between the border of first heated substrates and second heated substrates, seal washer be provided with heated substrates on corresponding through hole, corresponding through hole is fastenedly connected by screw element on first heated substrates, seal washer and second heated substrates.
5. a kind of thick film heater according to claim 1 is characterized in that, the cross section of described first groove and second groove is circle, and conduit is stainless-steel pipe, and stainless-steel pipe welds with ring flange or is threaded.
6. a kind of thick film heater according to claim 1 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.
7. a kind of thick film 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 201320115794 CN203120187U (en) | 2013-03-13 | 2013-03-13 | Thick film heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320115794 CN203120187U (en) | 2013-03-13 | 2013-03-13 | Thick film heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203120187U true CN203120187U (en) | 2013-08-07 |
Family
ID=48900495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320115794 Expired - Fee Related CN203120187U (en) | 2013-03-13 | 2013-03-13 | Thick film heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203120187U (en) |
-
2013
- 2013-03-13 CN CN 201320115794 patent/CN203120187U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140313 |