CN203588823U - High-voltage transformer and microwave oven - Google Patents
High-voltage transformer and microwave oven Download PDFInfo
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- CN203588823U CN203588823U CN201320614272.1U CN201320614272U CN203588823U CN 203588823 U CN203588823 U CN 203588823U CN 201320614272 U CN201320614272 U CN 201320614272U CN 203588823 U CN203588823 U CN 203588823U
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- protective device
- secondary winding
- winding
- transformer
- armature winding
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Abstract
The utility model provides a high-voltage transformer and a microwave oven. The high-voltage transformer comprises an iron core, a primary winding, a secondary winding, a primary connecting terminal, a secondary connecting terminal and a protection device; the protection device is connected with the primary winding or the secondary winding in series, and when the temperature of the secondary winding or the primary winding or the iron core exceeds a set value, or, a flowing current in the primary winding or the secondary winding is higher than a set value, the protection device cuts off the flowing current in the primary winding or the secondary winding. According to the high-voltage transformer, the protection device can perform temperature and current dual protection on the transformer, therefore, the transformer is made to be safer and more reliable, and the service life of the transformer is prolonged.
Description
Technical field
The utility model relates to household appliance technical field, in particular to a kind of, has the transformer of temperature and electric current double protection functions and a microwave oven that contains this high-tension transformer.
Background technology
At present, microwave oven uses very general in daily life, brought facility, but microwave oven exists following defect to our life:
When 1, the microwave oven operating time is long, will cause high-tension transformer excess Temperature and aging ahead of time, shorten transformer life;
2, connect other electric devices of high-tension transformer, for example, in high-voltage capacitance, diode, magnetron, any one parts is damaged, all may cause high-tension transformer secondary short circuited, short circuit current increases and causes the transformer high temperature even catching fire of smoldering, and to consumer, causes damage.
A kind of microwave oven transformer in correlation technique, is provided with attemperating unit on this transformer, long when the microwave oven operating time; when transformer secondary output winding temperature rises to the break-off signal of protective device setting; protective device starts, and cuts off the external power input of armature winding, and microwave oven quits work.When temperature drops to the reset temperature of protective device, armature winding is connected external circuit, and microwave oven is started working.But when the parts damages such as electric capacity, magnetron, transformer secondary output winding is short-circuited, cause transformer temperature sharply to rise, the temperature that senses setting due to attemperating unit needs a process, this process is approximately lasted ten minutes, attemperating unit is not also made a response, and transformer just burns, to consumer, causes damage.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art.
An object of the present utility model is to provide a kind of high-tension transformer for this reason; in armature winding or secondary winding, series connection access has the protective device of electric current and temperature dual fail-safe; protective device is by the mode of temperature and electric current duplicate protection; make transformer safety and reliable more, extended the useful life of transformer.
Another object of the present utility model is to provide a kind of microwave oven with described high-tension transformer.
Aspect of the utility model provides a kind of high-tension transformer, comprising: iron core; Armature winding, described armature winding is wound on described iron core; Secondary winding, described secondary winding is wound on described iron core; Elementary splicing ear, described elementary splicing ear is connected with described armature winding; Secondary splicing ear, described secondary splicing ear is connected with described secondary winding; Protective device; described protective device is connected with described armature winding or described secondary winding; when the temperature of described secondary winding or described armature winding or described iron core exceedes set point; or; when in described armature winding or described secondary winding, mobile electric current is greater than set point, described protective device is breaking at mobile electric current in described armature winding or described secondary winding.
The high-tension transformer that the utility model provides, when the transformer operating time is long or during non-normal working, when transformer temperature reaches the operating temperature of protective device setting, or, when the electric current in armature winding or secondary winding reaches the operating current of setting, protective device action, cut off mobile electric current in armature winding or secondary winding, transformer is quit work automatically, when the temperature of transformer reduces, protective device action, make transformer recover normal work, protective device is by the mode of temperature and electric current duplicate protection, make transformer safety and reliable more, and extended useful life of transformer.
In addition, according to the high-tension transformer in the utility model above-described embodiment, can also there is following additional technical feature:
An embodiment who provides according to the utility model, described protective device comprises: attemperating unit; And current protective device, described current protective device and described attemperating unit are in series.Protective device is composed in series by attemperating unit and current protective device, simple in structure, easy to manufacture, and can effectively realize the temperature of transformer and the duplicate protection of electric current.
An embodiment who provides according to the utility model, described current protective device is fuse or current switch.Fuse structure is simple, it is general, cheap to use; Current switch low consumption, reaction is fast, volume is little.
An embodiment who provides according to the utility model, described attemperating unit is bimetal plate temperature controling switch.Bimetallic temperature sheet control switch performance is stable, precision is high, volume is little, lightweight, reliability is high, long service life.
An embodiment who provides according to the utility model, described protective device also comprises housing, and described current protective device and described attemperating unit are installed in described housing.Housing constitutes parts by current protective device and attemperating unit, is more simply easy to be arranged on transformer.
An embodiment who provides according to the utility model, described protective device is bonded on described secondary winding or described armature winding or described iron core.The use of bonding way is general, easy for installation, processing ease.
An embodiment who provides according to the utility model, described protective device is bonded in the inner side of described secondary winding.The position of protective device arranges rationally, effectively the variations in temperature of inductive secondary winding.
An embodiment who provides according to the utility model, described protective device is connected with armature winding by wire, and is positioned at the inner side of described secondary winding.The position of protective device arranges rationally, effectively the variations in temperature of inductive secondary winding.
An embodiment who provides according to the utility model, described protective device is connected with described elementary splicing ear by described wire.
The microwave oven that the utility model second aspect provides, comprises the high-tension transformer described in above-mentioned arbitrary embodiment.
According to the microwave oven of the utility model embodiment; be provided with the high-tension transformer described in the utility model first aspect; protective device is by the mode of temperature and electric current duplicate protection; make transformer safety and reliable more; extend the useful life of transformer, and then extended the use of microwave ovens life-span.
Additional aspect of the present utility model and advantage will become in description part below obviously, 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 is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is the perspective view of high-tension transformer one embodiment described in the utility model;
Fig. 2 is the annexation schematic diagram of armature winding and protective device in Fig. 1;
Fig. 3 is the circuit diagram of high-tension transformer described in the utility model.
Wherein, in Fig. 1 to Fig. 3, the corresponding relation between Reference numeral and component names is:
1 iron core, 2 armature windings, 3 secondary winding, 4 elementary splicing ears, 5 level splicing ears, 6 protective devices, 7 connect wire.
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 feature in the application's embodiment and 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 mode described here and implement, and therefore, protection range of the present utility model is not subject to the restriction of following public specific embodiment.
Below with reference to Fig. 1 to Fig. 3, describe according to the high-tension transformer described in the utility model embodiment.
High-tension transformer as shown in figures 1 and 3, comprising: iron core 1, armature winding 2, secondary winding 3, elementary splicing ear 4, secondary splicing ear 5 and protective device 6.
Particularly, iron core 1 comprises multiple iron plates as shown in Figure 1.
Armature winding 2 is wound on iron core 1.Armature winding 2 connects power supply, and generates an electromagnetic field by the coil of coiling on iron core 1, thereby produces magnetic circuit on iron core 1.
Secondary winding 3 is wound on iron core 1.Owing to thering is toroid on iron core 1, on secondary winding 3, form induced electromotive force, thereby produce induced voltage at the two ends of secondary winding 3.
Elementary splicing ear 4, elementary splicing ear 4 is connected with armature winding 2.
Secondary splicing ear 5, secondary splicing ear 5 is connected with secondary winding 3.
In an embodiment of the present utility model, protective device 6 comprises: attemperating unit; And current protective device, current protective device and attemperating unit are in series.Protective device 6 is composed in series by attemperating unit and current protective device, simple in structure, easy to manufacture, and can effectively realize temperature and the electric current duplicate protection of transformer.
Preferably, current protective device is fuse or current switch.Fuse structure is simple, it is general, cheap to use; Current switch low consumption, reaction is fast, volume is little.
Preferably, attemperating unit is bimetal plate temperature controling switch.Bimetal plate temperature controling switch stable performance, precision is high, volume is little, lightweight, reliability is high, long service life.
Above embodiment is that current protective device is connected with the attemperating unit mode that reaches protective device function is illustrated; in fact; also current protective device and attemperating unit can be gathered together and form protective device described in the utility model; this those skilled in the art will readily understand, also should belong to protection range of the present utility model.
An embodiment who provides according to the utility model, protective device 6 also comprises housing, and current protective device and attemperating unit are installed in housing.Housing constitutes parts by current protective device and attemperating unit, only need in transformer, add this parts, just can realize temperature and the electric current duplicate protection of transformer, and can not increase the complexity of transformer circuit.
An embodiment who provides according to the utility model, protective device 6 is bonded on secondary winding 3 or armature winding 2 or iron core 1.Bonding mode is used generally, easy for installation, and processing ease can not increase the installation difficulty of protective device 6.
Preferably, protective device 6 is bonded in the inner side of secondary winding 3.The position of protective device 6 arranges rationally, effectively the variations in temperature of inductive secondary winding 3.
An embodiment who provides according to the utility model, protective device 6 is connected with armature winding 2 by connecting wire 7, and is positioned at the inner side of secondary winding 3.The position of protective device 6 arranges rationally, effectively the variations in temperature of inductive secondary winding 3.
Particularly; as depicted in figs. 1 and 2, first protective device 6 is connected with armature winding 2, and then it is bending to the inside along armature winding 2 to connect wire 7; protective device 6 is placed perpendicular to armature winding 2 by connecting wire 7, thereby made protective device be positioned at the inner side of secondary winding 3.Wherein, connect wire 7 and have certain rigidity and toughness, making to connect wire 7 can supporting protection device 6.
An embodiment who provides according to the utility model, protective device 6 is connected with elementary splicing ear 4 by wire.
Microwave oven (not shown) according to the utility model embodiment is described below, and described microwave oven comprises the high-tension transformer described in above-mentioned arbitrary embodiment.
According to the microwave oven of embodiment of the present utility model; be provided with high-tension transformer described in the utility model, protective device 6, by the mode of temperature and electric current duplicate protection, makes transformer safety and reliable more; extend the useful life of transformer, and then extended the use of microwave ovens life-span.
In sum, the high-tension transformer that the utility model provides, when the transformer operating time is long or during non-normal working, when transformer temperature reaches the operating temperature that protective device 6 sets, or, when the electric current in armature winding 2 or secondary winding 3 reaches the operating current of setting, protective device 6 moves, cut off armature winding 2 or the interior mobile electric current of secondary winding 3, transformer is quit work automatically, when the temperature of transformer reduces, protective device 6 moves, make transformer recover normal work, protective device 6 is by the mode of temperature and electric current duplicate protection, make transformer safety and reliable more, and extended useful life of transformer.
In the description of this specification, the description of term " embodiment " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
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 high-tension transformer, for microwave oven, is characterized in that, comprising:
Iron core;
Armature winding, described armature winding is wound on described iron core;
Secondary winding, described secondary winding is wound on described iron core;
Elementary splicing ear, described elementary splicing ear is connected with described armature winding;
Secondary splicing ear, described secondary splicing ear is connected with described secondary winding; With
Protective device, described protective device is connected with described armature winding or described secondary winding;
When the temperature of described secondary winding or described armature winding or described iron core exceedes set point; or; when in described armature winding or described secondary winding, mobile electric current is greater than set point, described protective device is breaking at mobile electric current in described armature winding or described secondary winding.
2. high-tension transformer according to claim 1, is characterized in that, described protective device comprises:
Attemperating unit; With
Current protective device, described current protective device and described attemperating unit are in series.
3. high-tension transformer according to claim 2, is characterized in that, described current protective device is fuse or current switch.
4. high-tension transformer according to claim 3, is characterized in that, described attemperating unit is bimetal plate temperature controling switch.
5. high-tension transformer according to claim 4, is characterized in that, described protective device also comprises:
Housing, is provided with described current protective device and described attemperating unit in described housing.
6. high-tension transformer according to claim 5, is characterized in that, described protective device is bonded on described secondary winding or described armature winding or described iron core.
7. high-tension transformer according to claim 6, is characterized in that, described protective device is bonded in the inner side of described secondary winding.
8. high-tension transformer according to claim 6, is characterized in that, described protective device is connected with armature winding by wire, and is positioned at the inner side of described secondary winding.
9. high-tension transformer according to claim 8, is characterized in that, described protective device is connected with described elementary splicing ear by described wire.
10. a microwave oven, is characterized in that, comprises high-tension transformer as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614272.1U CN203588823U (en) | 2013-09-30 | 2013-09-30 | High-voltage transformer and microwave oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614272.1U CN203588823U (en) | 2013-09-30 | 2013-09-30 | High-voltage transformer and microwave oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588823U true CN203588823U (en) | 2014-05-07 |
Family
ID=50586698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320614272.1U Expired - Fee Related CN203588823U (en) | 2013-09-30 | 2013-09-30 | High-voltage transformer and microwave oven |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588823U (en) |
-
2013
- 2013-09-30 CN CN201320614272.1U patent/CN203588823U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |