CN207219057U - A kind of electric heat-producing machine - Google Patents
A kind of electric heat-producing machine Download PDFInfo
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- CN207219057U CN207219057U CN201720720370.1U CN201720720370U CN207219057U CN 207219057 U CN207219057 U CN 207219057U CN 201720720370 U CN201720720370 U CN 201720720370U CN 207219057 U CN207219057 U CN 207219057U
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- ptc
- producing machine
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- heat
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Abstract
The utility model provides a kind of electric heat-producing machine, including electric heating element, radiating fin, not including metal sleeve；The electric heating element includes positive pole, electric heating elements and negative pole, and electric heating elements are between positive pole and negative pole.Electric heat-producing machine provided by the utility model, and aluminium flat conduit or sleeve pipe of the prior art is not used, cost has not only been saved, and reduce the thermal resistance of aluminium flat conduit intermediate link, heat exchange efficiency is improved, adds volumetric power density.
Description
Present patent application is divisional application.The application number of original bill is CN201420404616.0, and the applying date is 2014
On July 21, in, denomination of invention are：A kind of electric heat-producing machine.
Technical field
The utility model is related to a kind of heater, more particularly to it is a kind of with higher heat exchange efficiency without using metal sleeve
PTC electricity heat-producing machines.
Background technology
PTC is the english abbreviation of " positive temperature coefficient (Positive Temperature Coefficient) ".Ptc material
The characteristics of switching characteristic and contactless, noiseless, long service life with temperature-sensitive, current limliting, delay etc., therefore, as one kind
Thermal resistance material, its main application can be divided into two big classifications of switch and heating.For example, in field of switches, it can be applied
In the small household appliances production such as refrigerator startup, the protection of motor tranformer protection, programme-controlled exchange and mosquito repellant, curly hair hair iron, electric iron
Product.In heating class field, using class PTC stable performances of generating heat, heating is rapid, is influenceed the characteristic such as small by mains fluctuations,
The various heater products for being widely used in warmer, dryer, air curtain, air-conditioning etc. are made.
PTC electricity heat-producing machine (heater) uses PTC heat-sensible high polymers or ceramic component, after being combined by some monolithics with ripple
The aluminum strip that radiates forms through high temperature gluing knot, has the characteristics of thermal resistance is small, heat exchange efficiency is high.Its maximum feature be it is safe,
When meeting fan trouble stall, PTC electricity heat-producing machine is insufficient because radiating, and power drastically declines automatically, now PTC electricity heat-producing machine
Surface temperature maintains Curie temperature or so (generally 220 DEG C), so as to produce " the hair of electric heating tubing heater surfaces
It is red " phenomenon, greatly reduce the probability that accident occurs.
PTC electricity heat-producing machines on the market, its basic structure include the metal sleeve (metal flat of a rectangular cross-section at present
Pipe), electric heating element and insulating barrier are set in metal sleeve, and electric heating element is by positive and negative electrode and the PTC between electrode
Element forms, and insulating layer material is plastic sheeting, and electric heating elements are wrapped up, the larger radiating of two on the outside of metal sleeve
It is pasted with heat sink strip on face, heat sink strip continuously bends corrugated aluminium strip including one section and to be welded on corrugated aluminium strip upper and lower
Two aluminium sheets on two sides, metal sleeve outer wall and the aluminium sheet of heat sink strip side are mutually pasted by heat-conducting glue, refer to accompanying drawing 1.Cause
This, PTC electricity heat-producing machine heat transfer efficiencys at present on the market are relatively low.
Existing a variety of prior arts are improved PTC electricity heat-producing machines at present, such as：Chinese patent CN201119017Y
A kind of PTC electricity heat-producing machine is disclosed, multiple triangles being arranged side by side are made in the vertical section of heat sink strip by it, and this structure improves
The heat transfer efficiencys of PTC electricity heat-producing machines, but the raising limitation of its heat transfer efficiency, and the form being arranged side by side also increases
Material usage.Chinese patent CN201146614Y discloses a kind of PTC electricity heat-producing machine, and it is at the end of PTC core pipes (metal sleeve)
Portion is sealed with insulating packing, although this application improves the insulative water-proof anti-dust performance of PTC electricity heat-producing machines, it makes PTC electric
The heat transfer efficiency of heat-producing machine is lower.Chinese patent CN103179701A discloses a kind of electric heating combined equipment for motor vehicles
Thermogenesis element, by the several support stickers being arranged in the circumferential direction of container, to improve insulating heat-conductive of the prior art
Layer, CN101902845A, CN102668691A, CN102434968A, CN103179700A propose to existing PTC electricity heat-producing machine
Improve, but it does not change the defects of existing PTC electricity heat-producing machine heat transfer efficiency is low, manufacturing cost is high.
Utility model content
The utility model provides a kind of electric heat-producing machine for not including flat metal tube and preparation method thereof, to improve electricity at present
The heat exchange efficiency of heat-producing machine, increase volumetric power density, the thermal resistance cut down the number of intermediate links, and reduce manufacturing cost.
Wherein, the electric heat-producing machine is preferably PTC electricity heat-producing machines, and more preferably described PTC electricity heat-producing machine does not include metal
Flat tube.
A kind of electric heat-producing machine provided by the utility model, including at least one PTC electric heating elements, fin；The PTC electricity
Thermal element includes positive and negative electrode and the PTC-element between positive and negative electrode, and the fin is located at the outer surface of electrode, and
And it is provided with thermal insulation layer between the electrode and fin.
Preferably, the electrode can be linear pattern, or, in one kind described in second aspect of the utility model preferably
In embodiment, the positive pole and the negative pole include middle plane and/or at the middle plane both ends to same direction
The end turned up, form groove type；Its opening is relative when the positive electrode of groove type stacks with the negative electrode, the PTC
Electric heating element is clipped in the space formed between the positive electrode of groove type and the negative electrode.
Preferably, the both-side ends of described positive electrode and negative electrode include at least one clamping structure, the clamping
Structure can be the one or more in wedge shape, arc, quadrangle, polygon or chamfering, and be preferably wedge shape or chamfering knot
Structure.
Preferably, the PTC electric heating elements also include fixture, and the fixture can be elastic rubber ring or plastics
One or more in ring, bolt etc., for the clamping structure of the positive and negative electrode to be fixed.
Preferably, the electric heat-producing machine also includes seal, the PTC exposed between the near Shaozheng negative electrode of seal
The part of element is sealed；More preferably by PTC electric heating element both ends and side seal.
As a preferred embodiment of the present utility model, the electric heat-producing machine includes multiple PTC electric heating elements and multiple
Fin, the PTC electric heating elements and fin are arranged alternately.
Preferably, the electric heat-producing machine also includes housing, and the fin and the PTC electric heating elements are respectively positioned on described outer
Inframe portion.
It is highly preferred that also including at least one fixing hole on the housing, the fixed hole position is in the both sides of the housing.
Preferably, the electric heat-producing machine also includes at least one conductive interface, and wire passes through the interface and the positive electricity
Pole connects with the negative electrode.
Preferably, the contact that is electrically connected is set on the connecting portion, and wire is connected positive electrode/or negative electrode by the tie point
It is connected together.
Wherein, if there is the electrode or a part for electrode not contacted with fin, then do not connect described with fin
Tactile electrode or the outer surface of a part for the electrode are also provided with the thermal insulation layer.
Preferably, the material of the fin can be the metal of any good heat conductivity, such as stainless steel, aluminium, aluminium alloy
Deng, and preferably aluminium alloy.
Preferably, the method for setting thermal insulation layer can be coated, be smooth and wrapped (such as including winding, parcel side
Formula) in one or more.Wherein, more preferably by the way of coating, the mode that more preferably sprays.
Preferably, the material of the thermal insulation layer can be ceramics, plastics or its mixture, as Teflon, polyamides are sub-
One or more in amine, the Teflon doped with ceramic powders, glass, silica gel, polyethylene, polypropylene etc., and be preferably to make pottery
Porcelain, to provide more preferable heat-conducting effect.
Preferably, the material of the positive electrode in step 1 and negative electrode can be in stainless steel, aluminium, silver, copper, electrically conductive graphite
Any one or a few.
In a kind of preferred embodiment of the present utility model, the thermal insulation layer include insulating barrier and positioned at insulating barrier with
Bond coating between electrode or fin.Wherein, the insulating barrier is preferably above-mentioned ceramics, plastics or its mixture, and most
It is preferably ceramic.
In a kind of preferred embodiment of the present utility model, the thermal insulation layer preferably comprise in electrode outer surface or
Person's fin outer surface sprays bond coating and the insulating barrier on bond coating surface.
The bond coating is preferably alloy, such as Al-Ni alloys, Al-Zn alloys, Ni-Cr alloy, Al-Ni-Cr alloys.
The method of the sprays insulating material is preferably the modes such as plasma spraying, flame-spraying, detonation flame spraying.
In a kind of preferred embodiment of the present utility model, in step 2, insulating heat-conductive film is by the PTC electric heating elements bag
Cover, form the thermal insulation layer.
Preferably, the electric heat-producing machine does not include metal sleeve.
In the utility model the above, in case of no particular description：The table that the electrode contacts with PTC-element
Face is inner surface, and the surface relative with inner surface is outer surface；The surface of the radiating fin contacted with electrode is inner surface, and interior
The relative one side in surface is outer surface；Contact of the electrode with fin can be direct contact or be spaced
State thermal insulation layer and/or binding agent；The electrode includes positive pole and negative pole；Electricity heating of the present invention has with electrical heating
Identical implication, each means and converts electrical energy into heat energy.
It should be appreciated that in present aspect the above, can be by this between various aspects and various preferred embodiments
Art personnel are unrestricted to be combined, and the combination is also in the scope of the utility model.
The electric heat-producing machine that the application provides, and the aluminum casing being not used in routine techniques, have not only saved cost, and subtract
Lack the thermal resistance of aluminum casing intermediate link, improved heat exchange efficiency, add volumetric power density.
Electric heat-producing machine described herein, available for known electric heating system or place, such as air-conditioning, electric heater, drying
The various electric heat-producing machines such as machine.
Brief description of the drawings
Fig. 1 is the PTC electric heating element cross section structure schematic diagrams of prior art；
Fig. 2 is PTC electric heating element structural representations in a kind of embodiment of the utility model；
Fig. 3 is PTC electric heating element structural representations in the utility model another kind embodiment；
Fig. 4 is a kind of electric heat-producing machine structural representation of the utility model；
Fig. 5 is a kind of electric heat-producing machine structural representation that the utility model installs housing additional；
Wherein, 1-PTC elements；2- positive poles；3- thermal insulation layers；4- seals；5- negative poles；6- aluminium flat conduits；7- thermal conductive silicons
Glue；8- fin；9-PTC electric heating elements；10- the utility model electricity heat-producing machines；20- housings.
Embodiment
Embodiment 1
As shown in Fig. 2 be the PTC electric heating element schematic diagram that the application provides, on PTC-ceramic piece (PTC-element) 1,
It is respectively positive pole 2 and negative pole 5 down, positive pole 2 and negative pole 5 are respectively linear structure, and material is stainless steel.
Electrode outer surface spraying is provided with coating insulating heat-conductive Al2O3Ceramic layer 3.
In Fig. 4, PTC electric heating elements 9 intersect with aluminum radiating fin (fin) 8 to be stacked, and in Fig. 5, outside is housing 20,
It is provided with housing 20 and is conductively connected mouth, positive and negative electrode and external power source is connected to one by wire by the mouth that is conductively connected
Rise.Inside intersects for PTC electric heating elements 9 with radiating fin 8 stacks the PTC electricity heat-producing machine 10 to be formed.
Embodiment 2
First, positive electrode and negative electrode are pre-processed, with reference to embodiment 1, by pretreated cuboid positive pole 2 and negative pole 5
And PTC-ceramic piece 1 is superimposed, PTC-ceramic piece 1 is between positive pole 2 and negative pole 5.Positive and negative electrode material is stainless steel.
As shown in figure 3, electrode is " Qian " type groove structure, cavity is formed between two electrodes, PTC-ceramic piece 1 is placed in institute
State in cavity.Inverted triangle (wedge shape) clamping structure is provided with the tip of electrode end, elastic rubber ring or plastic hoop are nested with
On the clamping structure, positive and negative electrode is fixed.
Wherein, Al-Ni alloys are sprayed in the one side not contacted with PTC-ceramic piece 1 of positive and negative electrode 2,5, to increase outside
Insulating heat-conductive ceramic layer and electrode between cohesive force.
Then in Al-Ni alloy surface spray insulation heat conduction Al2O3Ceramic layer 3, and it is using end seal 4 that PTC electric heating is first
The both ends of part 9 are sealed.
And in thermal insulation layer surface smear heat conductive silica gel 7, superposition radiating fin 8.As shown in figure 4, by radiating fin 8 with
PTC electric heating elements 9 are arranged alternately, and form more volume electricity heat-producing machine.
As shown in figure 5, adding installation housing 20 outside device 10 in electricity, can play a protective role.
Examples 1 and 2 spraying ceramic coat performance detection is as follows：
Insulaion resistance>20M Ω, electrical strength 1800VDC@1min, electric leakage<2mA
Temperature tolerance：- 45 to 260 DEG C
Thermal conductivity：20-30W/mK
Thermal coefficient of expansion：8.0.
Embodiment 3
With reference to embodiment 1 or 2, positive and negative electrode 2,5 and PTC-ceramic piece 1 are fixed, polyimides (PI) film is tiled,
And stick on electrode outer surface.
In the face coated with adhesive (heat conductive silica gel 7 as shown in Figure 4) that radiating fin 8 contacts with electrode, by radiating fin
Piece 8 is bonded to electrode surface.
Embodiment 4
With reference to embodiment 1 or 2, positive and negative electrode 2,5 and PTC-ceramic piece 1 are fixed, PTC electric heating elements are made, it is sub- with polyamides
The PTC electric heating elements are wrapped up (i.e. by the way of wrapped) by amine film, are only exposed both ends and are used to connect outer lead.
In the face coated with adhesive (heat conductive silica gel 7 as shown in Figure 4) that radiating fin 8 contacts with electrode, by radiating fin
Piece 8 is bonded to electrode surface.
Specific embodiment of the utility model is described in detail above, but it is intended only as example, and this practicality is new
Type is not restricted to particular embodiments described above.To those skilled in the art, it is any that the utility model is carried out
Equivalent modifications and substitute also all among category of the present utility model.Therefore, spirit of the present utility model and model are not being departed from
Lower made impartial conversion and modification are enclosed, should all be covered in the scope of the utility model.
Claims (6)
1. a kind of electric heat-producing machine, it is characterised in that the electric heat-producing machine includes at least one PTC electric heating elements, fin；It is described
PTC electric heating elements include positive and negative electrode and the PTC-element between positive and negative electrode, and the fin is located at the appearance of electrode
Face, and it is provided with thermal insulation layer between the electrode and fin；Wherein, the method for setting the thermal insulation layer is painting
Cover, the thermal insulation layer material is silica gel or ceramics, and the material of the fin is closed for stainless steel or aluminium or aluminium
Gold.
2. electric heat-producing machine according to claim 1, it is characterised in that including multiple PTC electric heating elements and multiple fin,
The PTC electric heating elements are arranged alternately with the fin, and fin is bonded in electrode outer surface；Wherein, in fin and electricity
Thermal insulation layer is provided between pole.
3. electric heat-producing machine according to claim 1, it is characterised in that the method for setting the thermal insulation layer is spraying.
4. electric heat-producing machine according to claim 1, it is characterised in that housing is installed outside the electric heat-producing machine, it is described
PTC electric heating elements and fin are located inside the housing.
5. electric heat-producing machine according to claim 1, it is characterised in that the material of positive electrode and negative electrode be stainless steel, aluminium,
Any one or a few in silver, copper, electrically conductive graphite.
6. electric heat-producing machine according to claim 1, it is characterised in that the PTC-element is PTC-ceramic piece, the electrode
It is linear pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720720370.1U CN207219057U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720720370.1U CN207219057U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
| CN201420404616.0U CN203984697U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404616.0U Division CN203984697U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207219057U true CN207219057U (en) | 2018-04-10 |
Family
ID=51982112
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720720370.1U Active CN207219057U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
| CN201420404616.0U Expired - Fee Related CN203984697U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420404616.0U Expired - Fee Related CN203984697U (en) | 2014-07-21 | 2014-07-21 | A kind of electric heat-producing machine |
Country Status (1)
| Country | Link |
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| CN (2) | CN207219057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960031A (en) * | 2014-07-21 | 2016-09-21 | 谢彦君 | Electric heating device and preparation method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540247A (en) * | 2014-12-16 | 2015-04-22 | 江苏港星方能超声洗净科技有限公司 | Electric heater |
| WO2016095804A1 (en) * | 2014-12-16 | 2016-06-23 | 宋正贤 | Electrical heat-generating device |
| CN107681591A (en) * | 2017-09-29 | 2018-02-09 | 上海市政工程设计研究总院（集团）有限公司 | A kind of big current-carrying capacity insulation pouring bus and its heat dissipating method |
| CN107732825A (en) * | 2017-09-29 | 2018-02-23 | 上海市政工程设计研究总院（集团）有限公司 | A kind of big current-carrying capacity of heat-pipe radiator heat dissipation type pours into a mould bus and its heat dissipating method |
| CN114727433A (en) * | 2022-01-26 | 2022-07-08 | 浙江微燃电气科技有限公司 | Heat conduction structure, heat conduction casing and heater |
-
2014
- 2014-07-21 CN CN201720720370.1U patent/CN207219057U/en active Active
- 2014-07-21 CN CN201420404616.0U patent/CN203984697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105960031A (en) * | 2014-07-21 | 2016-09-21 | 谢彦君 | Electric heating device and preparation method thereof |
| CN105960031B (en) * | 2014-07-21 | 2019-03-22 | 谢彦君 | A kind of electricity heat-producing machine and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203984697U (en) | 2014-12-03 |
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