CN203872369U - Heat radiating fin and electric heater - Google Patents
Heat radiating fin and electric heater Download PDFInfo
- Publication number
- CN203872369U CN203872369U CN201420197630.8U CN201420197630U CN203872369U CN 203872369 U CN203872369 U CN 203872369U CN 201420197630 U CN201420197630 U CN 201420197630U CN 203872369 U CN203872369 U CN 203872369U
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- Prior art keywords
- fin
- heat
- egative film
- electric heater
- lateral plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 238000005452 bending Methods 0.000 claims abstract description 6
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 claims description 5
- 235000015110 jellies Nutrition 0.000 description 9
- 239000008274 jelly Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 230000036541 health Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Central Heating Systems (AREA)
Abstract
The utility model provides a heat radiating fin and an electric heater, wherein the heat radiating fin comprises the components of: a base plate which is provided with a plurality of openings, wherein a spacing part is arranged at the periphery of each opening; and side sheets which are connected with two ends of the base plate and/or the side sheets are obtained through bending two ends of the base plate. Through the technical solution provided by the utility model, the structures of the heat radiating fin and a heating tube are changed, so that the electric heater performs heating in a healthy, comfortable, environment-friendly and reliable manner, thereby improving reliability of the electric heater.
Description
Technical field
The utility model relates to electric heater technical field, in particular to a kind of fin and a kind of electric heater.
Background technology
PTC (Positive Temperature Coefficient, positive temperature coefficient) electric heater is widely used in air conditioner room unit, what indoor unit of wall hanging type air conditioner was generally used is traditional ceramic PTC electric heater, the core heat generating components of heater is arranged and is formed by series of ceramic power slice, and be positioned in square aluminium tube, aluminum pipe both sides are stained with corrugated, shovel piece formula, the fin of the version such as buckled.
The aluminum tube surfaces of this kind of PTC electric heater scribbles scolder or jelly, be prone to rosin joint, empty bonding, the unequal problem of a pitch of fins, and long-term heating power easily produces degumming problem, reduce heat exchange efficiency, produce Air Flow noise, bring potential safety hazard, the scolder simultaneously boning between fin and aluminum pipe or jelly can produce peculiar smell in heating process, pollute ambient air, unfavorable health.In addition, traditional ceramics PTC can produce different sound and the buzz of crack in Pi in power on/off moment and energising running, and after long-term use, PTC power attenuation amplitude is larger.
There is part PTC electric heater, its fin is a plurality of triangle aluminium strips side by side, the mode boning by jelly connects with aluminum pipe, easily produce the problem such as come unstuck, coefficient of safety is not high, there is different sound and the buzz that in power on/off moment and energising running, can produce crack in Pi simultaneously, and the larger problem of PTC power attenuation amplitude after long-term use.
Therefore, improve the structure of fin and electric heater, make that electric heater health is comfortable, environmental protection reliably becomes technical problem urgently to be resolved hurrily at present.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art or correlation technique.
For this reason, an object of the present utility model is to have proposed a kind of safe, healthy comfortable, fin that can efficiently radiates heat.
Another object of the present utility model is to have proposed a kind of electric heater.
For achieving the above object, according to the embodiment of first aspect of the present utility model, proposed a kind of fin, having comprised: egative film, described egative film is provided with a plurality of perforates, and described perforate is provided with limiting section around; Lateral plate, described lateral plate is connected to the two ends of described egative film and/or described lateral plate and is formed by the two ends bending of described egative film.
Fin according to an embodiment of the invention, on egative film, be provided with a plurality of perforates, and be provided with limiting section around in perforate, when fin is connected with heat-generating pipe, this limiting section can prevent that heat-generating pipe from rocking on the one hand when mounted, the distance of limiting section itself can limit the distance between adjacent fin on the other hand, the lateral plate of fin can be made separately and then be connected on egative film simultaneously, also can directly to the two ends of egative film, be bent to form lateral plate, expanded the area of dissipation of fin, efficiently radiates heat is to improve the efficiency of heat exchange.
In addition, according to the fin of the utility model above-described embodiment, can also there is following additional technical characterictic:
According to an embodiment of the present utility model, the described lateral plate that described egative film two ends connect in the same way or the described lateral plate that forms of reverse and/or described egative film two ends bending in the same way or oppositely.
According to the fin of embodiment of the present utility model, the lateral plate at fin egative film two ends can be in the same way or oppositely, as preferred embodiment comparatively, when a plurality of fin need that stack connects mutually, the lateral plate of a plurality of fin same side can same direction, to facilitate stack to connect.
According to an embodiment of the present utility model, one end that described lateral plate is not connected with described egative film is arc.
According to the fin of embodiment of the present utility model, one end that lateral plate is not connected with egative film is arc, can prevent that one end that fin lateral plate is not connected with egative film from scratching user, improves the fail safe in use procedure.
According to an embodiment of the present utility model, described egative film and described lateral plate form U-shaped or trapezoidal; The surface of described egative film and described lateral plate is plane or waveform or trapezoidal.
According to the fin of embodiment of the present utility model, the lateral plate of fin is connected with the egative film of fin, can form trapezoidal, as preferred embodiment comparatively, in the time of can carrying out rounding processing or be bent to form lateral plate by egative film junction, rounding be U-shaped to form, and is scratched avoiding in use procedure by fin.In addition, egative film and lateral plate are used waveform or trapezoidal, with increasing heat radiation area, improve radiating efficiency.
According to the embodiment of second aspect of the present utility model, a kind of electric heater has been proposed, comprising: the fin as described in any one in above-described embodiment; Heat-generating pipe, the perforate that described heat-generating pipe runs through described fin is connected with described fin.
According to the electric heater of embodiment of the present utility model, the perforate that heat-generating pipe runs through fin is directly connected with fin, do not use scolder or jelly adhesion heat-generating pipe and fin, with in prior art, use scolder or jelly to be connected heat-generating pipe to compare with fin, avoided in heating process scolder or the jelly generation peculiar smell that is heated, health environment-friendly has been avoided the insecure problem of coming unstuck of adhesion simultaneously, improved fail safe, and heat-generating pipe directly contacts with fin the efficiency that has improved heat exchange.
Certainly, the perforate that heat-generating pipe runs through fin is connected with fin, and when having a plurality of heat-generating pipe, as preferred embodiment comparatively, each heat-generating pipe all should run through all fin.
According to an embodiment of the present utility model, described heat-generating pipe comprises inside and outside two-layer heat-generating pipe.
According to the electric heater of embodiment of the present utility model, use the design of inside and outside two-layer heat-generating pipe, effectively avoided the risk of booster, improved the reliability of heater.For example: inner layer pipe is Bandaid pipe, outer tube is aluminum pipe.
According to an embodiment of the present utility model, in described heat-generating pipe, comprise at least one spiral helicine PTC heating wire.
According to the electric heater of embodiment of the present utility model, in each heat-generating pipe, the heating wire of at least one can be installed, increase the quantity of heating wire to improve heating efficiency, heating wire adopts spiral helicine structure simultaneously, increase the heating area of heating wire, to improve heating efficiency.
PTC heating wire can regulate temperature by automated intelligent, make the heatsink temperature of electric heater be unlikely to too high, improved fail safe, specifically, PTC heating wire temperature raises, it is large that its resistance becomes automatically, reduces heating power, and PTC heating wire temperature declines, repeatedly automatically adjust, until heating wire reaches stable temperature and firm power, in heating wire use procedure, power and temperature regulate automatically, have avoided heating wire in prior art to use for a long time the problem of power attenuation.For example: heating wire can be used PTC thermistor alloy silk.
According to an embodiment of the present utility model, also comprise: heat conductive insulating layer, be filled between described heat-generating pipe and described heating wire, the heat that described heating wire is produced transfers to described heat-generating pipe tube wall.
According to the electric heater of embodiment of the present utility model, between heating wire and heat-generating pipe, fill heat conductive insulating layer, the heat on the one hand heating wire being produced transfers to heat-generating pipe tube wall, on the other hand, in heating wire process of expansion and contraction, play cushioning effect, avoided in prior art producing when heating wire expands with heat and contract with cold noise.For example: heat conductive insulating layer can adopt magnesium powder.
According to an embodiment of the present utility model, also comprise: at described fin while being a plurality of, the connection that mutually superposes of described a plurality of fin.
According to the electric heater of embodiment of the present utility model, at described fin while being a plurality of, a plurality of fin mutually superpose and are connected, and as preferred embodiment comparatively, tapping can arrange limiting section, while installing on the one hand, prevent that heat-generating pipe from rocking, to reinforce the annexation of fin and heat-generating pipe, on the other hand can also be for controlling the distance of adjacent fin, a plurality of fin are connected with stacked system, simple in structure, can facilitate removing and installing of fin.
According to an embodiment of the present utility model, the distance in described a plurality of fin between adjacent described fin is 1mm to 10mm.
According to the electric heater of embodiment of the present utility model, between adjacent fin, maintain a certain distance, while avoiding fin to expand with heat and contract with cold, mutually push and produce danger, improved fail safe.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 shows according to the structural representation of the fin of embodiment of the present utility model;
Fig. 2 shows according to the structural representation of the fin right view of embodiment of the present utility model;
Fig. 3 shows according to the structural representation of the fin front view of embodiment of the present utility model;
Fig. 4 shows according to the structural representation of the electric heater of embodiment of the present utility model;
Fig. 5 shows according to the structural representation of the electric heater section of embodiment of the present utility model.
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the application's embodiment and the feature in embodiment can combine mutually.
A lot of details have been set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not subject to the restriction of following public specific embodiment.
Fig. 1 shows according to the structural representation of the fin of embodiment of the present utility model.
As shown in Figure 1, according to the fin of embodiment of the present utility model, comprise: egative film 102, described egative film 102 is provided with a plurality of perforates (the perforate 104A shown in Fig. 1 and perforate 104B), and described perforate is around provided with limiting section (the limiting section 106A corresponding to perforate 104A shown in Fig. 1 and corresponding to the limiting section 106B of perforate 104B); Lateral plate (the lateral plate 108A shown in Fig. 1 and lateral plate 108B), described lateral plate is connected to the two ends of described egative film 102 and/or described lateral plate and is formed by the two ends bending of described egative film 102.
On egative film 102, be provided with a plurality of perforates, and be provided with limiting section around in perforate, when fin is connected with heat-generating pipe, this limiting section can prevent that heat-generating pipe from rocking on the one hand when mounted, the distance of limiting section itself can limit the distance between adjacent fin on the other hand, the lateral plate of fin can be made separately and then be connected on egative film 102 simultaneously, also can directly to the two ends of egative film 102, be bent to form lateral plate, expanded the area of dissipation of fin, efficiently radiates heat is to improve the efficiency of heat exchange.
Below in conjunction with Fig. 2 and Fig. 3, the structural parameters of fin are described in detail.
Fig. 2 shows according to the structural representation of the fin right view of embodiment of the present utility model.
As shown in Figure 2, according to an embodiment of the present utility model, the described lateral plate that described egative film 102 two ends connect is (in Fig. 2, lateral plate 202 is connected in the same way with lateral plate 204) or oppositely (not shown) and/or described egative film 102 two ends bend the described lateral plate that forms in the same way or oppositely in the same way.
The lateral plate at fin egative film 102 two ends can be in the same way or oppositely, and as preferred embodiment comparatively, when a plurality of fin need that stack connects mutually, the lateral plate of a plurality of fin same side can same direction, to facilitate stack to connect.
According to an embodiment of the present utility model, one end that described lateral plate is not connected with described egative film 102 is arc.
One end that lateral plate is not connected with egative film 102 is arc, can prevent that one end that fin lateral plate is not connected with egative film 102 from scratching user, improves the fail safe in use procedure.
According to an embodiment of the present utility model, described egative film and described lateral plate form U-shaped or trapezoidal; The surface of described egative film and described lateral plate is plane or waveform or trapezoidal.
The lateral plate of fin is connected with the egative film of fin, can form trapezoidal (shown in Fig. 2 trapezoidal), as preferred embodiment comparatively, in the time of can carrying out rounding processing or be bent to form lateral plate by egative film junction, rounding be U-shaped to form, and is scratched avoiding in use procedure by fin.In addition, egative film and lateral plate are used waveform or trapezoidal, with increasing heat radiation area, improve radiating efficiency.
Fig. 3 shows according to the structural representation of the fin front view of embodiment of the present utility model.
As shown in Figure 3, one end that the lateral plate of fin is not connected with egative film is arc, and as specific embodiment comparatively, fin can also design with reference to following parameter, and on described egative film, the centre distance 302 of adjacent apertures is 4mm to 100mm; The diameter 306 of each perforate on described egative film is 4mm to 50mm, and the diameter 306 of described perforate is less than or equal to the centre distance 302 of described adjacent apertures; The minimum range 304 at the perforate center that described lateral plate and the described lateral plate of distance are nearest is 5mm; The thickness of described egative film and described lateral plate is 0.1mm to 3.0mm; The width 308 of described egative film and described lateral plate is 8mm to 30mm.
Fig. 4 shows according to the structural representation of the electric heater of embodiment of the present utility model.
As shown in Figure 4, the electric heater according to embodiment of the present utility model, comprising: the fin 402 as described in any one in above-described embodiment; Heat-generating pipe 404, the perforate that described heat-generating pipe 404 runs through described fin 402 is connected with described fin 402.
The perforate that heat-generating pipe 404 runs through fin 402 is directly connected with fin 402, do not use scolder or jelly adhesion heat-generating pipe 404 and fin 402, with in prior art, use scolder or jelly to be connected heat-generating pipe 404 to compare with fin 402, avoided in heating process scolder or the jelly generation peculiar smell that is heated, health environment-friendly, avoided the insecure problem of coming unstuck of adhesion simultaneously, improved fail safe, and heat-generating pipe 404 directly contacts with fin 402 efficiency that has improved heat exchange.Certainly, as can be seen from Figure 4, the structure of the electric heater shown in Fig. 4 is only a part of choosing in whole electric heater structure.
Certainly, the perforate that heat-generating pipe 404 runs through fin 402 is connected with fin 402, and when having a plurality of heat-generating pipe 404, as preferred embodiment comparatively, each heat-generating pipe 404 all should run through all fin 402.
Fig. 5 shows according to the structural representation of the electric heater section of embodiment of the present utility model.
As shown in Figure 5, described heat-generating pipe 404 comprises inside and outside two-layer heat-generating pipe (outer tube 502 and inner layer pipe 504).
Use the design of inside and outside two-layer heat-generating pipe, effectively avoided the risk of booster, improved the reliability of heater.For example: inner layer pipe 504 is Bandaid pipe, outer tube 502 is aluminum pipe.Certainly, as can be seen from Figure 5, the cross-section structure of the electric heater shown in Fig. 5 is only a part of choosing in whole electric heater structure.
According to an embodiment of the present utility model, in described heat-generating pipe 404, comprise at least one spiral helicine PTC heating wire 506.
The interior heating wire 506 that can be provided with at least one of each heat-generating pipe 404, increases the quantity of heating wire 506 to improve heating efficiency, and heating wire 506 adopts spiral helicine structure simultaneously, increases the heating area of heating wire 506, to improve heating efficiency.
PTC heating wire 506 can regulate temperature by automated intelligent, make fin 402 temperature of electric heater be unlikely to too high, improved fail safe, specifically, PTC heating wire 506 temperature raise, it is large that its resistance becomes automatically, reduce heating power, PTC heating wire 506 temperature decline, repeatedly automatically adjust, until heating wire 506 reaches stable temperature and firm power, in heating wire 506 use procedures, power and temperature regulate automatically, have avoided the long-term problem of using power attenuation of heating wire 506 in prior art.For example: heating wire 506 can be used PTC thermistor alloy silk.
According to an embodiment of the present utility model, also comprise: heat conductive insulating layer 508, be filled between described heat-generating pipe 404 and described heating wire 506, the heat that described heating wire 506 is produced transfers to described heat-generating pipe 404 tube walls.
Between heating wire 506 and heat-generating pipe 404, fill heat conductive insulating layer, the heat on the one hand heating wire 506 being produced transfers to heat-generating pipe 404 tube walls, on the other hand, in heating wire 506 process of expansion and contraction, play cushioning effect, avoided in prior art producing when heating wire 506 expands with heat and contract with cold noise.For example: heat conductive insulating layer 508 can adopt magnesium powder.
According to an embodiment of the present utility model, also comprise: at described fin 402, when a plurality of, described a plurality of fin 402 mutually stack connect.
At described fin 402 while being a plurality of, a plurality of fin 402 mutually stack are connected, as preferred embodiment comparatively, tapping can arrange limiting section, prevents that heat-generating pipe from rocking, to reinforce the annexation of fin and heat-generating pipe while installing on the one hand, on the other hand can also be for controlling the distance of adjacent fin 402, a plurality of fin 402 are connected with stacked system, simple in structure, can facilitate removing and installing of fin 402.
According to an embodiment of the present utility model, the distance in described a plurality of fin 402 between adjacent described fin 402 is 1mm to 10mm.
Between adjacent fin 402, maintain a certain distance, while avoiding fin 402 to expand with heat and contract with cold, mutually push and produce danger, improved fail safe.
Certainly, according to embodiments of the invention electric heater, can also be provided with: plug, bonding conductor, left and right is panel beating fixedly, left support holder assembly, right support holder assembly, fuse, thermostat, lead-in wire.Plug carries out effective sealing to the mouth of pipe of heat-generating pipe 404 and plays moistureproof object; bonding conductor be used for contacting two heat-generating pipes 404 form bulk loops; left and right fixedly panel beating is used for spacing fixing and two heat-generating pipes 404 in location; left support holder assembly plays positioning supports effect; right support holder assembly plays the installation effect of supporting on the one hand, and fuse and the thermostat in right support assembly plays safe temperature protective effect on the one hand.
More than be described with reference to the accompanying drawings the technical solution of the utility model, by the technical solution of the utility model, changed the structure of heat-generating pipe and fin, made that electric heater health is comfortable, environmental protection is generated heat reliably, improved the reliability of electric heater.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a fin, is characterized in that, comprising:
Egative film, described egative film is provided with a plurality of perforates, and described perforate is provided with limiting section around;
Lateral plate, described lateral plate is connected to the two ends of described egative film and/or described lateral plate and is formed by the two ends bending of described egative film.
2. fin according to claim 1, is characterized in that, the described lateral plate that described egative film two ends connect in the same way or the described lateral plate that forms of reverse and/or described egative film two ends bending in the same way or oppositely.
3. fin according to claim 1, is characterized in that, one end that described lateral plate is not connected with described egative film is arc.
4. fin according to claim 1, is characterized in that,
Described egative film and described lateral plate form U-shaped or trapezoidal;
The surface of described egative film and described lateral plate is plane or waveform or trapezoidal.
5. an electric heater, is characterized in that, comprising:
Fin as described in any one in claim 1 to 4;
Heat-generating pipe, the perforate that described heat-generating pipe runs through described fin is connected with described fin.
6. electric heater according to claim 5, is characterized in that, described heat-generating pipe comprises inside and outside two-layer heat-generating pipe.
7. electric heater according to claim 5, is characterized in that, comprises at least one spiral helicine PTC heating wire in described heat-generating pipe.
8. electric heater according to claim 7, is characterized in that, also comprises:
Heat conductive insulating layer, is filled between described heat-generating pipe and described heating wire, and the heat that described heating wire is produced transfers to described heat-generating pipe tube wall.
9. electric heater according to claim 5, is characterized in that, also comprises:
At described fin while being a plurality of, the connection that mutually superposes of described a plurality of fin.
10. electric heater according to claim 9, is characterized in that, the distance in described a plurality of fin between adjacent described fin is 1mm to 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197630.8U CN203872369U (en) | 2014-04-22 | 2014-04-22 | Heat radiating fin and electric heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420197630.8U CN203872369U (en) | 2014-04-22 | 2014-04-22 | Heat radiating fin and electric heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203872369U true CN203872369U (en) | 2014-10-08 |
Family
ID=51653286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420197630.8U Expired - Lifetime CN203872369U (en) | 2014-04-22 | 2014-04-22 | Heat radiating fin and electric heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203872369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491696A (en) * | 2015-11-30 | 2016-04-13 | 芜湖恒美电热器具有限公司 | PTC heating pipe |
-
2014
- 2014-04-22 CN CN201420197630.8U patent/CN203872369U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491696A (en) * | 2015-11-30 | 2016-04-13 | 芜湖恒美电热器具有限公司 | PTC heating pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |