CN102271429A - Electric heater for indoor unit of air conditioner - Google Patents
Electric heater for indoor unit of air conditioner Download PDFInfo
- Publication number
- CN102271429A CN102271429A CN2010102458711A CN201010245871A CN102271429A CN 102271429 A CN102271429 A CN 102271429A CN 2010102458711 A CN2010102458711 A CN 2010102458711A CN 201010245871 A CN201010245871 A CN 201010245871A CN 102271429 A CN102271429 A CN 102271429A
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- electric heater
- heat sink
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Abstract
The invention discloses an electric heater for an indoor unit of an air conditioner. The electric heater comprises an electric heating element. The electric heating element comprises a heating part and radiation parts. An array consisting of the radiation parts is arranged on the surface of the heating part. The outer radiation edges, facing outside relative to the heating part, of the array consisting of the radiation parts are at least partially exposed in an outer space. The structure of the electric heating element is changed, so the electric heater decreases a space occupied by the heating part in the indoor unit of the air conditioner, reduces air supply resistance, increases a supply air rate, betters the radiation effects of the radiation parts, improves the performance of the indoor unit and reduces noises produced by the running of the indoor unit.
Description
Technical field
The present invention relates to the indoor apparatus of air conditioner field, especially relate to a kind of electric heater that is used for indoor apparatus of air conditioner.
Background technology
PTC is the thermistor of positive temperature coefficient, its side reaction coefficient is higher, have electric durability and resistance to ag(e)ing preferably, be widely used at present in the domestic air conditioning air conditioner indoor machine, when ambient temperature reduces, the resistance value of pottery PTC can reduce thereupon, caloric value can correspondingly increase on the contrary, according to this principle, adopted the air-conditioning of the auxilliary thermal technology of ceramic PTC electricity, can change caloric value according to the variation of room temperature and the size of indoor set air quantity automatically, thereby regulate indoor temperature rightly, reach the powerful purpose that heats rapidly.
The structural representation of employed electric heater in the existing indoor apparatus of air conditioner has been shown in the accompanying drawing 1, has comprised distribution 5, temperature limiter 6 in left socle 1, electric heating element (ceramic PTC) 2, insulation stator 3, thermal fuse-link 4, the machine; Fig. 2 shows the structural representation of electric heating element in Fig. 1 electric heater, electric heating element 2 comprises among the figure: heat sink 21, heat generating member 23, reinforcement 25, wherein, heat generating member 23 comprises first 231 and second 233 that are parallel to each other, and the array of being made up of heat sink 21 is arranged on first 231 and second 233 equably, and reinforcement 25 is connected in each heat sink 21 relative heat generating member 23 heat radiation edge toward the outer side in the radiation fin array.Fig. 3 shows vertical cross-sectional schematic of Fig. 2, and the width of reinforcement 25 equates with the width of heat sink 21 as shown in Figure 3.This reinforcement 25 has even curface, and the heat radiation outward flange of the connected array of being made up of heat sink 21 is covered fully.
Electric heating element in the conventional electric heating device (ceramic PTC) is though structure is more stable, but because the width of reinforcement 25 equates with the width of heat sink 21, heat sink 21 is covered fully the bottom of reinforcement 25, reinforcement 25 forms one barrier, and the air flows of indoor apparatus of air conditioner has been produced tangible resistance.Deaden air and directly blow to heat sink 21, influence the radiating effect of heat sink 21, cause the thermal current concentrations.The overall dimension of this structure heating element is bigger, longitudinal section area broad, and the indoor set inner space is narrow and small relatively uses the electric heater that has this heating element mechanism to increase the air intake resistance of indoor set, influence the performance of air-conditioning, increased the set noise when air-conditioning heats.
Summary of the invention
The object of the present invention is to provide a kind of electric heater that is used for indoor apparatus of air conditioner, it is big to have overcome existing electric heater space hold rate, and the air intake resistance is big, influences the indoor set performance, increases the deficiency of air-conditioning noise.
For this reason, the invention provides a kind of electric heater, comprise electric heating element, electric heating element comprises: heat generating member and heat sink; The heat sink array is arranged in the surface of heat generating member, and wherein the relative heat generating member of heat sink array heat radiation outward flange toward the outer side is exposed to space outerpace at least in part.
According to further improvement of the present invention, heat generating member comprise parallel first with second, first with second face structure that is centrosymmetric, each heat sink in the heat sink array evenly be arranged in first with second on.
According to further improvement of the present invention, be connected first of heat generating member and heat sink on second structure that is centrosymmetric.
According to further improvement of the present invention, the cross section of above-mentioned heat sink is triangle, rectangle, U-shaped.
According to further improvement of the present invention, the wing distance in the heat sink array between adjacent two heat sinks is 3-10mm.
According to further improvement of the present invention, above-mentioned heat generating member also comprises the 3rd and fourth face, the 3rd with the fourth face structure that is centrosymmetric, the 3rd with fourth face for concaving or cambered outwards arc.
According to further improvement of the present invention, above-mentioned electric heating element also comprises reinforcement, and reinforcement is along the longitudinal extension of electric heating element, and is connected on the part heat radiation outward flange of each heat sink in the heat sink array.
According to further improvement of the present invention, the width of reinforcement is less than the width of heat sink.
According to further improvement of the present invention, reinforcement is connected the outer peripheral medium position of heat radiation of each heat sink in the heat sink array.
According to further improvement of the present invention, reinforcement is provided with one or more louvres.
According to further improvement of the present invention, heat radiation outward flange to the small part of each heat sink is exposed from louvre in the heat sink array.
According to further improvement of the present invention, the width of louvre is greater than 1/2 of the reinforcement width, and less than 3/4 of width.
According to further improvement of the present invention, the length of louvre is greater than the width of louvre, less than 4/5 of reinforcement length.
According to further improvement of the present invention, louvre is along the center line setting of reinforcement longitudinal extension.
Further improve according to of the present invention, a plurality of louvres are vertically arranged along reinforcement, and every two or more adjacent louvres form a louvre group, and the spacing of the adjacent louvre in each louvre group is less than the spacing between the adjacent louvre group.
The advantage of heater of the present invention: the structure that is used for the electric heater electric heating element of indoor apparatus of air conditioner by change, make the relative heat generating member of heat sink array heat radiation outward flange toward the outer side be exposed to space outerpace at least in part and by increasing the wing distance between the fin, change the shape of heating aluminum pipe, with dwindle heater element in indoor apparatus of air conditioner taken up space, reduce the air intake resistance, improve the heat sink radiating effect, increase the intake of indoor set, improve the performance of indoor set, the noise that is produced when reducing the indoor set running.
Description of drawings
Accompanying drawing is the part that constitutes specification of the present invention, is used for further understanding the present invention, and accompanying drawing shows the preferred embodiments of the present invention, and is used for illustrating principle of the present invention with specification.Among the figure:
Fig. 1 shows the structural representation of employed electric heater in the existing indoor apparatus of air conditioner;
Fig. 2 shows the structural representation of electric heating element in Fig. 1 electric heater;
Fig. 3 shows vertical cross-sectional schematic of Fig. 2;
Fig. 4 shows the structural representation of the electric heating element of first specific embodiment according to the present invention;
Fig. 5 shows vertical cross-sectional schematic of Fig. 4;
Fig. 6 shows the structural representation of the electric heating element of second specific embodiment according to the present invention;
Fig. 7 shows vertical cross-sectional schematic of Fig. 6;
Fig. 8 shows first kind of structural representation according to the reinforcement of the embodiment of the invention;
Fig. 9 shows second kind of structural representation according to the reinforcement of the embodiment of the invention;
Figure 10 shows according to the present invention vertical cross-sectional schematic of heating aluminum pipe in a kind of specific embodiment;
Figure 11 shows according to the present invention vertical cross-sectional schematic of heating aluminum pipe in the another kind of specific embodiment;
Figure 12 shows the air-conditioning and the rotating speed and the wind quantity test curve chart that use the air-conditioning of electric heater in the prior art of use electric heater of first specific embodiment according to the present invention;
Figure 13 shows the air-conditioning and the air quantity and the noise test curve figure that use the air-conditioning of electric heater in the prior art of use electric heater of first specific embodiment according to the present invention;
Figure 14 shows use according to the air-conditioning and the air quantity and the noise test curve figure that use the air-conditioning of electric heater in the prior art that has as the electric heater of the reinforcement of structure among Fig. 9 of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, these embodiment just in order to understand rather than to limit the present invention, implement by the multitude of different ways that the present invention can be defined by the claims and cover.
A kind of electric heater that is used for indoor apparatus of air conditioner of the present invention comprises electric heating element 2, and electric heating element 2 comprises: heat generating member 23 and heat sink 21; Heat sink 21 is formed array arrangements on the surface of heat generating member 23, and wherein the relative heat generating member 23 heat radiation outward flange toward the outer side of the array formed of heat sink 21 is exposed to space outerpace at least in part.
Fig. 4 and Fig. 5 show first specific embodiment of the electric heater that is used for indoor apparatus of air conditioner according to the present invention, electric heating element 2 in this electric heater comprises in this embodiment: heat generating member 23 and heat sink 21, heat generating member 23 can be selected different materials as required, as aluminum pipe commonly used in indoor apparatus of air conditioner; Heat generating member 23 comprises first 231 and second 233, the first 231 and second 233 structures that are centrosymmetric; Heat sink 21 evenly is arranged on first 231 and second 233 of heat generating member 23, as preferably, can heat sink 21 be made as centrosymmetric structure with being connected on 23 first 231 and second 233 of the aluminum pipes of heating accordingly, so can make the structure of electric heating element more stable.Fin 21 is fixedly connected in the heating first 231 and second 233 of aluminum pipe 23 in this embodiment, its connected mode needs only sturdy and durable, as the mode of heat sink 21 by welding is connected on first 231 and second 233 of heat generating member 23, simultaneously, in this structure, the relative heat generating member of the array heat radiation outward flange toward the outer side that heat sink 21 is formed is exposed in the space outerpace fully.The electric heater that will have this electric heating element structure is placed in the indoor apparatus of air conditioner, the relative heat generating member 23 of the array of being made up of heat sink 21 in electric heating element heat radiation edge toward the outer side is exposed in the space outerpace fully, the space of 21 of adjacent heat sinks helps the circulation of air in heat sink 21 arrays, increased the sphere of circulation of air in indoor apparatus of air conditioner inside, so reduced the air intake resistance significantly, improve some noise problems that the thermal current concentrations causes simultaneously, improved the performance of indoor set.
The cross section that can make of heat sink 21 is (shown in Fig. 4 in the present invention, this transverse cross-section parallel in the heating aluminum pipe long axis direction) shape include but not limited to triangle, rectangle, U-shaped, the shape of the longitudinal section that this fin 21 can be made (shown in Fig. 5, this longitudinal section is perpendicular to the long axis direction of heating aluminum pipe) includes but not limited to rectangle, trapezoidal, circular arc.
In order better to reduce the air intake resistance, as a kind of preferred implementation, the wing in the array that heat sink 21 can be formed between the two neighboring sections heat sink 21 is extended to 3-10mm apart from d; Increase the wing distance between the heat sink, be equivalent in identical space, reduce the use amount of heat sink 21, thereby reduced cost of manufacture.
Illustrated among Fig. 6 and Fig. 7 according to second specific embodiment of the present invention, also comprise reinforcement 25 in this electric heating element in this embodiment, reinforcement 25 is along the longitudinal extension of electric heating element, and is connected on the part heat radiation outward flange of each heat sink 21 in the array of being made up of heat sink 21.
For on the basis of improving the stability of using according to the electric heater electric heating element that is used for indoor apparatus of air conditioner provided by the present invention, reduce the air intake resistance of this electric heating element, reinforcement 25 is provided with louvre 251 again.Fig. 8 shows first kind of structural representation according to the reinforcement of the embodiment of the invention.As shown in Figure 8, as a kind of preferably mode, the part of each heat sink 21 heat radiation outward flange exposes from the louvre 251 that reinforcement 25 is provided with in the array that heat sink 21 is formed, form air intake passage, help the circulation of air, increase the sphere of circulation of air, reduced the air intake resistance in indoor apparatus of air conditioner inside.
Can be in the shape that is used for louvre on the electric heater reinforcement 25 of indoor apparatus of air conditioner according to the present invention for of all kinds, as ellipse, rectangle, trapezoidal, circular arc, polygon.As long as can satisfy the air intake resistance that reduces the electric heater that is used for indoor apparatus of air conditioner, reduce noise, the purpose that improves performance just can.The louvre that is provided with on reinforcement can be set to the combination of shape, equirotal louvre, also can be set to the combination of the louvre that the shape size has nothing in common with each other.
As shown in Figure 9, as a kind of optimal way, the 1/2-3/4 that the width (perpendicular to the direction of reinforcement longitudinal extension among Fig. 9) of this louvre 251 can be arranged on reinforcement 25 width doubly between, the width of louvre 251 is set to 1/2 times of effect that can realize the circulation of air better greater than reinforcement 25, and the width of louvre 251 is controlled at less than the reinforcement width 3/4 times, be in order to ensure the intensity of reinforcement 25, to make reinforcement 25 provide stable support for the array of being formed by heat sink 21.
In a kind of more preferably mode, the louvre 251 that is provided with on the reinforcement 25 can also can be one for a plurality of.When louvre 251 was a plurality of, the length of this louvre preferably was not less than the width of louvre 251.When the length of louvre is wider than the width of louvre, be more conducive to flowing of air, reduce the air intake resistance.A kind of concrete execution mode is that a plurality of louvres 251 are vertically arranged along reinforcement 25, every two or more adjacent louvre 251 forms a louvre group, and the spacing e of the adjacent louvre 251 in each louvre group is less than the spacing e ' between the adjacent louvre group.Spacing e ' between every group of louvre is bigger, and the spacing e between the adjacent louvre 251 is less in the group, like this, can guarantee the intensity of reinforcement 25 better when reducing the air intake resistance.When louvre 251 is one, can be made as 4/5 times the radiating groove (not shown) along reinforcement 25 longitudinal extensions of length less than reinforcement 25.
Preferably, louvre 251 is along the center line setting of reinforcement 25 longitudinal extensions.So be provided with, can promote the stability that electric heating element uses, prolong its useful life, if the central point of louvre disperses everywhere, the circulation position difference of air gently has weight just the wearing and tearing of electric heating element are had, and can shorten the useful life of electric heating element.
The width of this reinforcement 25 is less than the width of heat sink 21, as a kind of optimal way, reinforcement 25 can be connected the outer peripheral medium position of heat radiation of each heat sink 21 in the array that heat sink 21 formed.This moment, the structure of electric heating element 2 was more stable, stressed more even.
Compare with electric heating element of the prior art, according to the electric heating element of this embodiment owing to be provided with reinforcement 25, so have the stability identical with electric heating element in the prior art, simultaneously, because according to the width of reinforcement 25 in the electric heating element of this embodiment width less than heat sink 21, the relative heat generating member of the array heat radiation outer edge part toward the outer side that heat sink 21 is formed is exposed to space outerpace, but increased the flowing space of air, thereby reduce the air intake resistance of indoor set, improved the intake of indoor set, and the performance of air-conditioning.
As Figure 10 and shown in Figure 11, heat generating member 23 used in the present invention also comprises the 3rd 235 and 237, the three 235 of fourth faces and fourth face 237 structure that is centrosymmetric, the 3rd 235 with fourth face 237 for concaving or cambered outwards arc.Such structure can reach increases movement-oriented function, reduces the effect of gas-flow resistance.
Test 1
Air-conditioning that uses the electric heater (being new PTC1 among the figure) according to first embodiment of the invention and the air-conditioning that uses existing electric heater (being original PTC among the figure) are carried out performance test, test result such as Figure 12 and Figure 13.
Shown in Figure 12 air-conditioning rotating speed and intake test curve figure, use is compared with the air-conditioning that uses existing electric heater according to the air-conditioning of the electric heater of first embodiment of the invention, identical rotating speed uses according to the intake of the air-conditioning of the electric heater of the embodiment of the invention bigger down, this is because pass through to change the structure of electric heating element 2 according to the electric heater of the embodiment of the invention, reduced to use the air intake resistance of the indoor apparatus of air conditioner of this electric heater, improve the intake of air-conditioning under same rotational speed, saved the power of air-conditioning.
Simultaneously, shown in Figure 13 air-conditioning intake and noise test curve figure, use is compared with the air-conditioning that uses existing electric heater according to the air-conditioning of the electric heater of first embodiment of the invention, and identical air quantity uses according to the noise figure of the air-conditioning of the electric heater of the embodiment of the invention littler down.
In sum, when prepared electric heater uses according to the present invention, reduce the air intake resistance in indoor apparatus of air conditioner, improved the intake of air-conditioning under the same rotational speed, reduced the noise that is produced under the identical intake.
Test 2
Relation between air-conditioning rotating speed and the intake has been described in Figure 12, in following test, has only tested at the relation between air-conditioning intake and the noise.
Test is used the air-conditioning of the electric heater (being new PTC2 among the figure) that has as the reinforcement of structure among Fig. 9 and is used the air-conditioning that has electric heater (being original PTC among the figure) now to carry out the test that concerns between air-conditioning intake and the noise, and test result as shown in figure 14.
The louvre arrangement is as follows in the reinforcement 25 shown in Fig. 9: reinforcement 25 is provided with the equally distributed louvre group of many groups, is provided with two shapes, big or small identical louvre in each louvre group.The width of each louvre is 3/5 times of reinforcement width, and the length of louvre is 2.5 times of louvre width.Equal 1/2 times of louvre width apart from e in the same louvre group between two louvres.Spacing e ' between adjacent louvre group equates with the width of louvre.As shown in Figure 9, in a plurality of louvres of vertically arranging along reinforcement 25, direction from left to right, the distance of the initiating terminal of first louvre and reinforcement is greater than 20mm, and the distance between last louvre and reinforcement 25 terminals is greater than 70mm.
As shown in figure 14, use according to of the present invention have as the air-conditioning of the electric heater of the reinforcement of structure among Fig. 9 with use prior art in the air-conditioning of electric heater compare, identical air quantity uses the noise figure according to the air-conditioning of the electric heater of the embodiment of the invention that has as the reinforcement of structure among Fig. 9 less down.
What Fig. 9 provided only is a kind of concrete execution mode of the reinforcement according to the present invention.The present invention is not limited to this, as can be known, at reinforcement 25 louvre is set and has the circulation that helps air from curve shown in Figure 14, reduces the air intake resistance, and then reduces the effect of noise.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. an electric heater that is used for indoor apparatus of air conditioner comprises electric heating element, it is characterized in that,
Described electric heating element comprises:
Heat generating member (23);
Heat sink (21) array is arranged in the surface of described heat generating member (23), and described relatively heat generating member (23) the heat radiation outward flange toward the outer side of wherein said heat sink (21) array is exposed to space outerpace at least in part.
2. electric heater according to claim 1, it is characterized in that, described heat generating member comprises parallel first (231) and second (233), described first (231) and described second (233) structure that is centrosymmetric, each heat sink (21) in the described heat sink array evenly are arranged on described first (231) and second (233).
3. electric heater according to claim 2 is characterized in that, is connected described heat sink (21) on described first (231) and second (233) structure that is centrosymmetric.
4. electric heater according to claim 1 is characterized in that, the cross section of described heat sink (21) is triangle, rectangle or U-shaped.
5. electric heater according to claim 1 is characterized in that, the wing distance in described heat sink (21) array between adjacent two described heat sinks (21) is 3-10mm.
6. electric heater according to claim 2, it is characterized in that, described heat generating member (23) also comprises the 3rd (235) and fourth face (237), described the 3rd (235) and described fourth face (237) structure that is centrosymmetric, described the 3rd (235) and described fourth face (237) are for concaving or cambered outwards arc.
7. according to each described electric heater of claim 1-6, it is characterized in that, described electric heating element also comprises reinforcement (25), and described reinforcement (25) is along the longitudinal extension of described electric heating element, and is connected on the part heat radiation outward flange of each heat sink in the described heat sink array.
8. electric heater according to claim 7 is characterized in that, the width of described reinforcement (25) is less than the width of described heat sink (21).
9. electric heater according to claim 8 is characterized in that, described reinforcement (25) is connected the outer peripheral medium position of heat radiation of each heat sink (21) in the described heat sink array.
10. electric heater according to claim 7 is characterized in that, described reinforcement (25) is provided with one or more louvres (251).
11. electric heater according to claim 10 is characterized in that, the heat radiation outward flange of each heat sink (21) to small part is exposed from described louvre (251) in the described heat sink array.
12. electric heater according to claim 10 is characterized in that, the width of described louvre (251) is greater than 1/2 of described reinforcement width, and less than 3/4 of described reinforcement width.
13. electric heater according to claim 12 is characterized in that, the length of described louvre (251) is greater than the width of described louvre, less than 4/5 of described reinforcement length.
14. electric heater according to claim 10 is characterized in that, described louvre (251) is along the center line setting of described reinforcement (25) longitudinal extension.
15. electric heater according to claim 10, it is characterized in that, described a plurality of louvre (251) is vertically arranged along described reinforcement (25), every two or more adjacent louvres (251) form a louvre group, and the spacing of the adjacent louvre (251) in each louvre group is less than the spacing between the adjacent louvre group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010245871 CN102271429B (en) | 2010-06-02 | 2010-08-03 | Electric heater for indoor unit of air conditioner |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020220837.4 | 2010-06-02 | ||
| CN201020220837 | 2010-06-02 | ||
| CN 201010245871 CN102271429B (en) | 2010-06-02 | 2010-08-03 | Electric heater for indoor unit of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102271429A true CN102271429A (en) | 2011-12-07 |
| CN102271429B CN102271429B (en) | 2013-08-07 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020282888XU Expired - Lifetime CN201726547U (en) | 2010-06-02 | 2010-08-03 | Electric heater for indoor machine of air conditioner |
| CN 201010245871 Active CN102271429B (en) | 2010-06-02 | 2010-08-03 | Electric heater for indoor unit of air conditioner |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020282888XU Expired - Lifetime CN201726547U (en) | 2010-06-02 | 2010-08-03 | Electric heater for indoor machine of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN201726547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235477A (en) * | 2018-03-14 | 2018-06-29 | 宁波萨科森工业科技有限公司 | A kind of bayonet heater |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201726547U (en) * | 2010-06-02 | 2011-01-26 | 珠海格力电器股份有限公司 | Electric heater for indoor machine of air conditioner |
| CN103388890B (en) * | 2012-05-11 | 2016-12-14 | 珠海格力电器股份有限公司 | Electric heater unit and air-conditioner |
| CN103388891B (en) * | 2012-05-11 | 2016-08-31 | 珠海格力电器股份有限公司 | Electric heater unit and air-conditioner |
| CN108449813A (en) * | 2018-05-15 | 2018-08-24 | 浙江欧兰顿电器科技有限公司 | A kind of uncharged PTC heat generating components in surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156644Y (en) * | 1993-04-24 | 1994-02-16 | 广州天河纶麒电子有限公司 | PTC ceramic heat generator |
| CN201114835Y (en) * | 2007-09-24 | 2008-09-10 | 深圳市金科特种材料股份有限公司 | Tube PTC heater without current |
| JP2010025527A (en) * | 2008-07-24 | 2010-02-04 | Denso Corp | Electric heater, vehicular air conditioner, and method for manufacturing electric heater |
| CN201726547U (en) * | 2010-06-02 | 2011-01-26 | 珠海格力电器股份有限公司 | Electric heater for indoor machine of air conditioner |
-
2010
- 2010-08-03 CN CN201020282888XU patent/CN201726547U/en not_active Expired - Lifetime
- 2010-08-03 CN CN 201010245871 patent/CN102271429B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2156644Y (en) * | 1993-04-24 | 1994-02-16 | 广州天河纶麒电子有限公司 | PTC ceramic heat generator |
| CN201114835Y (en) * | 2007-09-24 | 2008-09-10 | 深圳市金科特种材料股份有限公司 | Tube PTC heater without current |
| JP2010025527A (en) * | 2008-07-24 | 2010-02-04 | Denso Corp | Electric heater, vehicular air conditioner, and method for manufacturing electric heater |
| CN201726547U (en) * | 2010-06-02 | 2011-01-26 | 珠海格力电器股份有限公司 | Electric heater for indoor machine of air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108235477A (en) * | 2018-03-14 | 2018-06-29 | 宁波萨科森工业科技有限公司 | A kind of bayonet heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102271429B (en) | 2013-08-07 |
| CN201726547U (en) | 2011-01-26 |
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