CN109788587A - A kind of heating device - Google Patents
A kind of heating device Download PDFInfo
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- CN109788587A CN109788587A CN201910265310.9A CN201910265310A CN109788587A CN 109788587 A CN109788587 A CN 109788587A CN 201910265310 A CN201910265310 A CN 201910265310A CN 109788587 A CN109788587 A CN 109788587A
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- Prior art keywords
- heat generating
- heating device
- generating components
- glass layer
- heating
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Abstract
The present invention relates to a kind of heating device, including interior glass layer, the periphery of interior glass layer is arranged in described generate heat；Outer glass layer, the heat generating components are wrapped in inside outer glass layer.Above-mentioned interior glass layer forms supports insulative solid, outer glass layer constitute with outer wall metal-insulator conductive structure, the non-dense packing effect of glass fibre therein, can effective, provide distance insulation, and lighter than existing defrost heating device.The present invention is also devised with temperature protection, can effective protection heating device work within the scope of the temperature of safety.
Description
Technical field
The present invention relates to field of refrigeration equipments, in particular to a kind of heating device for defrost in refrigeration equipment.
Background technique
Refrigeration equipment is in refrigeration, and since its surface temperature is lower, the vapor in environment can condense on its surface to be frosted,
To influence the refrigeration effect of evaporator.Refrigeration equipment, the frost that evaporator surface especially therein is condensed, if not by
Timely removal will bring larger impact to equipment refrigeration performance.
In the prior art, for defrost, heating device can be set.In general, heating device is designed as the tubulose of metal material
Structure, is internally provided with Electrothermic wire, and setting magnesia is filled out between the shell of the metallic tube-shaped structure of Electrothermic wire and outer layer
Fill layer carry out insulation with it is thermally conductive.But it is thermally conductive in order to realize, while effective insulation protection is carried out to internal electric heating wire,
Existing defrost heating device needs the magnesium oxide material carrying out dense packing effect in the shell of tubular metal.Magnesia specific gravity
For 2.94g/cm3, therefore defrost heating device overall weight is heavier, is unfavorable for installation, maintenance.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides one kind is lighter compared to existing defrost heating device weight, insulation
Protection and the more structurally sound heating device of overheating protection.
Firstly, to achieve the above object, proposing a kind of heating device comprising heat generating components；Further include: interior glass fibre
The periphery of interior glass layer is arranged in layer, the heat generating components；Outer glass layer, the heat generating components are wrapped in outer glass
Inside glass fibrous layer.
It optionally, further include heating outer tube in above-mentioned heating device, the outer glass layer is wrapped in described add
Hot outer tube.
Optionally, in above-mentioned heating device, the heat generating components uses metal material, and the heating outer tube uses thermal conductivity
The biggish metal material of rate.
Optionally, in above-mentioned heating device, further include drop resistance device, the end of heating device is set, is used for
Reduce the resistance of heating device end.
Optionally, in above-mentioned heating device, the drop resistance device includes low resistance component, the heat generating components setting
In the periphery of low resistance component, and the circuit communication between heat generating components.
Optionally, in above-mentioned heating device, the low resistance component uses the lower metal material of resistance value.
Optionally, in above-mentioned heating device, the internal diameter of the heating outer tube is reduced in the end of the heating device, is used
In the center that heating device is fixed on to heating outer tube.
Optionally, in above-mentioned heating device, the interior glass layer and outer glass layer are that glass fibre is non-close
The structure filled in fact；Its density is 2.4 between 2.7g/cm3.
Optionally, in above-mentioned heating device, the heat generating components is nickel filament, and the low resistance component is iron wire, nickel
Chromium silk is wrapped in the periphery of iron wire.
Optionally, further include temperature control unit in above-mentioned heating device, be electrically connected with the heat generating components, used
In the temperature for detecting the heat generating components, the confession of the heat generating components is disconnected when the heat generating components temperature is more than setting range
Electricity.
Optionally, in above-mentioned heating device, the temperature control unit includes Thermal Cutoffs and temperature limiter, described
Thermal Cutoffs is arranged between heat generating components and limiter；The Thermal Cutoffs and the temperature limiter are connected in series in described
In the current supply circuit of heat generating components.
Beneficial effect
The present invention includes interior glass layer, and the periphery of interior glass layer is arranged in the heat generating components；Outer glass fibre
Layer, the heat generating components are wrapped in inside outer glass layer.Above-mentioned inside and outside glass layer constitutes insulating heat-conductive knot
Structure, the non-dense packing effect of glass fibre therein, can effective, distance insulation is provided, and than existing defrost heating device
It is lighter.In addition, process aspect, since glass fibre is easy to filling, moulding, assembly, the present invention can also effectively reduce process,
Productivity is improved, assembly cost is reduced.In terms of material, glass fibre also has the lower advantage of cost.Environmentally friendly aspect, due to existing
Environmental pollution is heavier in process of production for some magnesium powders, and the present invention can effectively reduce pollution using glass fibre.Safety side
Face, heat generating components winding can clearly know the uniformity of heat generating components distribution, glass fibers by estimating on the glass fibers
Dimension can be more evenly distributed in pipe, and the uniformity that product integrally generates heat can be improved in this way, avoid hot-spot, to improve product
Safety.Interior glass fibre forms supports insulative solid, outer glass layer is constituted and outer wall metal-insulator conductive structure.
The present invention is realized duplicate protection, is effectively controlled by reducible temperature limiter and not reducible Thermal Cutoffs
The heating device only works within the scope of the temperature of safety.
The present invention is that the position of further protection heating device end electrical connection is unlikely to overheat, and is also further filled in heating
Setting low resistances component, the low resistance component such as setting wire in the heat generating components of end can reduce the resistance of heating device end
Value, to reduce the temperature of its end.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the overall structure diagram of heating device of the invention；
Fig. 2 is the cross-sectional view of heating device in the present invention；
Fig. 3 is the end construction schematic diagram of heating device in the present invention.
In figure, 1 indicates heating outer tube；2 indicate heat generating components；3 indicate interior glass layer；4 indicate outer glass layer；
5 indicate low resistance component；6 indicate the heating part of heating device；7 indicate Thermal Cutoffs；8 indicate temperature limiter.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with the attached of the embodiment of the present invention
Figure, is clearly and completely described the technical solution of the embodiment of the present invention.Obviously, described embodiment is of the invention
A part of the embodiment, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art
Every other embodiment obtained, shall fall within the protection scope of the present invention under the premise of being not necessarily to creative work.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, it will not be explained in an idealized or overly formal meaning.
The meaning of heretofore described "and/or" refers to that the case where respective individualism or both exists simultaneously wraps
Including including.
The meaning of heretofore described " inside and outside " refers to relative to heating device itself, being directed toward its inside
Direction is interior, otherwise is outer；Rather than the specific restriction to the device of the invention mechanism.
The meaning of heretofore described " connection " can be between component be directly connected to be also possible to pass through between component
Other components are indirectly connected with.
Fig. 1 show heating device according to the present invention, is used for defrost.In the heating device, heating part 6 is main
Include:
Interior glass layer 3 controls the internal diameter that heat generating components 2 is wound, and the heat generating components 2 controls helical form by digital-control digital-display
Spacing be uniformly distributed in the periphery of interior glass layer 3；Heat generating components 2 can use heating wire, and heating wire is by helically
Shape is wrapped in the periphery of interior glass layer 3.
The heat generating components 2 is wrapped in outer glass layer 4 by outer glass layer 4 by interlacing mode
Portion；
Outer tube 1 is heated, is hollow structure, for accommodating heat generating components 2；The portion that the heating outer tube defrosts as needed
Position, may be provided with several corresponding bendings, and outer glass layer 4 is wrapped in inside the heating outer tube 1.
With reference to Fig. 2, the heat generating components 2 may be configured as hollow tubular structure, usually may be selected by heating wire winding and
It constitutes, the heating wire may be selected to be nickel filament in an implementation mode；The heating wire is along the heating outer tube 1
Overbending direction be evenly distributed in heating outer tube 1 in；The hollow tubular structure inside of the heat generating components 2 and/or the hair
The glass layer for insulating heat-conductive is at least partly provided between thermal part 2 and the heating outer tube 1.
That is, in an implementation mode, the heating outer tube 1 can with reference to cross-sectional view shown in Fig. 2
It is selected as stainless steel tube or the biggish metal material of other thermal conductivities, the inner wall close to the stainless steel tube is provided with outer glass fibers
Tie up layer 4, be additionally provided with glass layer 3 in one layer in the outer glass layer 4, the glass layer of two layers of insulating heat-conductive it
Between be provided with the heat generating components 2 of the hollow tubular.Interior glass layer 3 supports the heat generating components 2, it is made to keep hollow tube
The structure of shape, outer glass layer 4 further serve as the effect of distance insulation, the heat generating components 2 of hollow tubular are avoided directly to touch
To heating outer tube 1.
The structure of above-mentioned inside and outside two layers of insulating heat-conductive may be configured as by the structure of the non-dense packing effect of glass fibre.It is non-close
The scheme relative to existing magnesium oxide powder dense packing effect is filled in fact, and there is certain gap between the glass fibre of filling.
The gap is supported by glass fibre, and is enough the heat generating components 2 for maintaining to be disposed therein and the heating holding of outer tube 1 insulation, without electricity
Contact.
Due to using above-mentioned structure, by the gap between glass fibre the application can be heated in the present embodiment
Interstitital texture in outer tube 1, that is, so that the density domination of inside and outside layer glass fibrous layer is 2.4 to 2.7g/cm3Between.It compares
In densely filling at least 2.94g/cm in existing defroster heating3Magnesium oxide powder, this programme enables to described
Heating device weight is obviously light.
With reference to the connection relationship in Fig. 1, heating device provided by the present invention, also further series connection on current supply circuit
There are Thermal Cutoffs 7 and temperature limiter 8, the two temperature control unit in series can be used in detecting the heat generating components 2
Temperature disconnects the power supply of the heat generating components 2 when 2 temperature of heat generating components is more than setting range.
Specifically, the Thermal Cutoffs 7 is disposed proximate to the heat generating components 2.It is more than default in heat generating components 2
Temperature range when fuse to disconnect the power supply of current supply circuit, so that heat generating components 2 can not disconnect and power supply with resetting
Connection, is not heated further.
The temperature limiter 8 is connected between Thermal Cutoffs 7 and power supply.It detects heating part by sensing device
Temperature range locating for part 2 can trigger breaking mechanism when temperature is more than preset safe range with resetting, and disconnect heat generating components 2
Power supply so that heat generating components 2 does not heat further, to realize overheat protector.
Concatenated mode guarantees that any of the above-described temperature protective device starts breaking mechanism and can be effectively protected heating part
Part 2 does not overheat.
The end being directly electrically connected with above-mentioned circuit structure in view of heat generating components 2 is easy to be influenced by high temperature and leads to electricity
Road connection structure aging.Therefore it needs to carry out cooling processing to the end of heat generating components 2.
With reference to Fig. 3, under a kind of feasible mode, the cooling processing carried out to 2 end of heat generating components can usually pass through
2 end resistance value of heat generating components is reduced to realize.
Under a kind of mode, 2 end resistance value of heat generating components is reduced, it can be by the way that drop resistance dress be arranged in the end of heating device
It sets and realizes.The drop resistance device includes low resistance component 5, and the periphery of low resistance component 5 is arranged in the heat generating components 2, and
The circuit communication between heat generating components 2.As a result, in equivalent circuit corresponding to heat generating components 2 and above-mentioned circuit structure, due to
Increase low resistance component 5, the resistance that 2 end of heat generating components is corresponded in the equivalent circuit is reduced accordingly, the function of current in
Heat caused by the resistance also reduces accordingly.The present invention realizes that the cooling to 2 end of heat generating components is handled as a result,.
The wire that 2 end of heat generating components is parallel under a kind of implementation is realized.The wire may be selected to be iron wire or
Other heat-resisting and resistance values are lower or material no more than 2 heating wire of heat generating components.The circuit structure of the parallel connection is specific
When realization, the heating wire of 2 end of heat generating components can be directly wound in the outer surface of wire and realized.Wire 5 is on the one hand
Glass layer 3 provides support for 2 end of heat generating components in replacing, and on the other hand can pass through lesser resistance equally in parallel
And the resistance value of 2 end of heat generating components is effectively reduced.Under the constant situation of heating device overall current, the resistance of end is reduced
Value can be effectively reduced the heating effect of current of 2 end of heat generating components, reduce its fever, to protect 2 end of heat generating components and limit
The connection structure of warm device 8 or Thermal Cutoffs 7 is reliable and stable.
Further to protect 2 end connecting of heat generating components reliable and stable, the heating outer tube 1 can also be in the fever
2 end of component is provided with necking.The internal diameter of necking reduces, so as to clamp securely 2 end of heat generating components and its
Internal wire, effectively fixes it.In particular, heating device can be fixed on outside heating by the structure of above-mentioned necking
The center of pipe 1.
Heating device provided by the present invention, external metallization pipe is consistent with conventional structure, heating wire and metal pipe-wall it
Between distance insulation using glass fibre carry out insulating heat-conductive.The weight of heating device of the present invention is lighter as a result,.In the application
The also further external connection of tubular metal heat generating components 2 has conducting wire, has the reducible limit of duplicate protection by circuit structure realization
The not reducible Thermal Cutoffs 7 of warm device 8+.The two is any, and disconnecting circuit connects due to heating device temperature is more than preset range
When, enable to the heat generating components 2 to disconnect power supply.Thus, the two cooperation can effectively ensure that the heat generating components 2
It only works under the conditions of suitable temperature.Further, the present invention also to heat generating components 2 for realizing circuit connecting end end into
It has gone special protection, by reducing the overall resistance of end circuit, its fuel factor has been reduced, to avoid circuit connection structure
It is damaged by heat ageing.The heating part 6 of heating device in figure carries out the change of body according to the defrost demand of refrigerator defrost, with
Reach refrigerator defrost needs；Thermal Cutoffs 7 in figure is no more than 360 degree of temperature according to the maximum temperature of refrigerator defrost refrigerant
It is required that select Thermal Cutoffs and installation site, control heater will not ultra-long time work, temperature 360 degree of internal heaters just
It fails to reach the use safety requirements of refrigerator defrosting heater；Temperature limiter 8 in figure is can to reset temperature controller, can be according to refrigerator
Control requires the temperature requirement of defrost liner.
The above is only embodiments of the present invention, and the description thereof is more specific and detailed, and but it cannot be understood as right
The limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention
Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.
Claims (10)
1. a kind of heating device, including heat generating components (2), which is characterized in that further include:
Interior glass layer (3), periphery of heat generating components (2) setting in interior glass layer (3)；
Outer glass layer (4), it is internal that the heat generating components (2) is wrapped in outer glass layer (4).
2. heating device as described in claim 1, which is characterized in that further include heating outer tube (1), the outer glass layer
(4) it is internal to be wrapped in the heating outer tube (1)
Heating device as claimed in claim 2, which is characterized in that the heat generating components (2) uses metal material, the heating
Outer tube (1) uses the biggish metal material of thermal conductivity；The heat generating components (2) is spirally wrapped around interior glass layer (3)
Periphery.
3. heating device as claimed in claim 3, which is characterized in that further include drop resistance device, be arranged in heating device
End, for reducing the resistance of heating device end.
4. heating device as claimed in claim 4, which is characterized in that the drop resistance device includes low resistance component (5), institute
It states heat generating components (2) to be arranged in the periphery of low resistance component (5), and the circuit communication between heat generating components (2).
5. heating device as claimed in claim 5, which is characterized in that the low resistance component (5) is lower using resistance value
Metal material.
6. heating device as claimed in claim 6, which is characterized in that the heat generating components (2) is nickel filament, the low resistance
Component (5) is iron wire, and nickel filament is wrapped in the periphery of iron wire.
7. heating device as claimed in claim 2, which is characterized in that the internal diameter of heating outer tube (1) is filled in the heating
The end set reduces, for heating device to be fixed on to the center of heating outer tube (1).
8. heating device according to claims 1-8, which is characterized in that the interior glass layer (3) and outer glass fibre
Layer (4) is the non-dense packing effect structure of glass fibre；Its density is 2.4 between 2.7g/cm3.
9. heating device as claimed in claims 1-9, which is characterized in that further include temperature control unit, with the fever
Component (2) electrical connection is more than setting range in the heat generating components (2) temperature for detecting the temperature of the heat generating components (2)
When disconnect the power supplies of the heat generating components (2).
10. heating device as claimed in claim 10, which is characterized in that the temperature control unit includes Thermal Cutoffs
(7) and temperature limiter (8), the Thermal Cutoffs (7) are arranged between heat generating components (2) and limiter (8)；The temperature is protected
Dangerous silk (7) and the temperature limiter (8) are connected in series in the current supply circuit of the heat generating components (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910265310.9A CN109788587A (en) | 2019-04-03 | 2019-04-03 | A kind of heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910265310.9A CN109788587A (en) | 2019-04-03 | 2019-04-03 | A kind of heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109788587A true CN109788587A (en) | 2019-05-21 |
Family
ID=66490857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910265310.9A Pending CN109788587A (en) | 2019-04-03 | 2019-04-03 | A kind of heating device |
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| Country | Link |
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| CN (1) | CN109788587A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2264351Y (en) * | 1995-09-06 | 1997-10-08 | 袁惠汀 | Electrical heating flexible cord device for melting ice |
| CN2670867Y (en) * | 2003-11-21 | 2005-01-12 | 唐其峰 | Defrost heater |
| CN2670866Y (en) * | 2003-04-03 | 2005-01-12 | 唐其峰 | Defrost heater |
| CN102322718A (en) * | 2011-06-10 | 2012-01-18 | 海信（北京）电器有限公司 | Detection device and method of defrosting device for refrigerator |
| KR20160133071A (en) * | 2015-05-11 | 2016-11-22 | 주식회사 한국엠아이씨 | Heating cable having lead wire connected thereto for melting snow and method for manufacturing the same |
| CN210641091U (en) * | 2019-04-03 | 2020-05-29 | 常州西玛特电器有限公司 | Heating device |
-
2019
- 2019-04-03 CN CN201910265310.9A patent/CN109788587A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2264351Y (en) * | 1995-09-06 | 1997-10-08 | 袁惠汀 | Electrical heating flexible cord device for melting ice |
| CN2670866Y (en) * | 2003-04-03 | 2005-01-12 | 唐其峰 | Defrost heater |
| CN2670867Y (en) * | 2003-11-21 | 2005-01-12 | 唐其峰 | Defrost heater |
| CN102322718A (en) * | 2011-06-10 | 2012-01-18 | 海信（北京）电器有限公司 | Detection device and method of defrosting device for refrigerator |
| KR20160133071A (en) * | 2015-05-11 | 2016-11-22 | 주식회사 한국엠아이씨 | Heating cable having lead wire connected thereto for melting snow and method for manufacturing the same |
| CN210641091U (en) * | 2019-04-03 | 2020-05-29 | 常州西玛特电器有限公司 | Heating device |
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