CN204539526U - The microwave oven circuit of adaptive input voltage and microwave oven - Google Patents
The microwave oven circuit of adaptive input voltage and microwave oven Download PDFInfo
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- CN204539526U CN204539526U CN201520292529.5U CN201520292529U CN204539526U CN 204539526 U CN204539526 U CN 204539526U CN 201520292529 U CN201520292529 U CN 201520292529U CN 204539526 U CN204539526 U CN 204539526U
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Abstract
The utility model provides a kind of microwave oven circuit and microwave oven of adaptive input voltage, described microwave oven circuit comprises: high-tension transformer, comprise armature winding, described armature winding has a reference edge and multiple terminals, described reference edge is connected to the first end of external power source, and any two terminals in described multiple terminals are not identical with the coil turn between described reference edge; Multiple switching device, the first end of each switching device is connected to the second end of external power source, and the second end correspondence of each switching device is connected to terminals in described multiple terminals; Voltage check device, for detecting the input voltage of external power source; Control circuit, is connected to described voltage check device and described each switching device, and arbitrary switching device that described control circuit can trigger in described multiple switching device closes.The utility model on the basis of production cost not increasing microwave oven, can guarantee that microwave oven exports identical power when input voltage is different.
Description
Technical field
The utility model relates to microwave oven circuit technical field, in particular to a kind of microwave oven circuit and a kind of microwave oven of adaptive input voltage.
Background technology
The supply voltage that country variant and area use has difference, generally has 120V, 220V, 230V, 240V etc.When exporting to different national of supply voltage with a microwave oven, identical in order to ensure the power output of microwave oven, different high-tension transformers is configured according to different supply voltages, to guarantee that power output keeps identical when input voltage is different with regard to needing.
Plug 101 as shown in Figure 1, is inserted power supply by existing microwave oven circuit, and voltage passes to high-tension transformer 105 by protective tube 102, primary switch 103 and power relay 104.Voltage on the primary coil of high-tension transformer 105 can increase more than 2000V by secondary coil, and magnetron service area 106 can be made like this to start working, and produces power output 107.
If all adopt a high-tension transformer for different input voltages, so can cause exporting different power.Such as: when the supply voltage using the microwave oven of 230V to connect 240V, so produced power output will be greater than rated power, and power can be caused like this to exceed standard, and the microwave oven life-span can be caused sharply to decline on the one hand, culinary art also can be caused to overdo on the other hand.On the contrary, if the actual input voltage used is lower than standard input voltage, so produced power output lower than rated power, will can cause the phenomenon of cooking and having not been cooked or heated long enough.
In order to adapt to the voltage of each department, in correlation technique, propose the high-tension transformer that exploitation is applicable to different regions.This scheme causes the increase of high-tension transformer kind undoubtedly, is unfavorable for standardized production, and the production too increasing product increases.
Therefore, how can on the basis of production cost not increasing microwave oven, guarantee microwave oven exports identical power and becomes urgently to be resolved hurrily technical problem when input voltage is different.
Utility model content
The utility model is intended at least to solve one of technical problem existed in prior art or correlation technique.
For this reason, an object of the present utility model is the microwave oven circuit proposing a kind of new adaptive input voltage, on the basis of production cost not increasing microwave oven, can guarantee that microwave oven exports identical power when input voltage is different.
Another object of the present utility model is to propose a kind of microwave oven.
For achieving the above object, according to the embodiment of first aspect of the present utility model, propose a kind of microwave oven circuit of adaptive input voltage, comprise: high-tension transformer, described high-tension transformer comprises armature winding, described armature winding has a reference edge and multiple terminals, and described reference edge is connected to the first end of external power source, and any two terminals in described multiple terminals are not identical with the coil turn between described reference edge; Multiple switching device, the first end of each switching device in described multiple switching device is connected to the second end of described external power source, and the second end correspondence of described each switching device is connected to terminals in described multiple terminals; Voltage check device, for detecting the input voltage of described external power source; Control circuit, is connected to described voltage check device and described each switching device, and arbitrary switching device that described control circuit can trigger in described multiple switching device closes.
According to the microwave oven circuit of the adaptive input voltage of embodiment of the present utility model, because the coil turn between any two terminals from reference edges on the armature winding of high-tension transformer is different, therefore detect by arranging the input voltage of voltage check device to external power source, and control circuit is set triggers corresponding switching device, make it possible to the difference of the input voltage according to external power source, control the coil turn of place in circuit in high-tension transformer armature winding, and then can guarantee when input voltage is different, the voltage of high-tension transformer primary side can remain unchanged, to guarantee that microwave oven exports identical power when input voltage is different, avoid and develop many moneys high-tension transformer for different input voltages and increase the production cost of product.
According to the microwave oven circuit of the adaptive input voltage of above-described embodiment of the present utility model, following technical characteristic can also be had:
According to an embodiment of the present utility model, described voltage check device comprises: current transformer, in the circuit between the first end being connected in series in described reference edge and described external power source.
According to an embodiment of the present utility model, also comprise: master switch, be connected in series in the circuit between the first end of described each switching device and the second end of described external power source.
According to an embodiment of the present utility model, also comprise: protective tube, be connected in series in the circuit between the first end of described each switching device and the second end of described external power source.
According to an embodiment of the present utility model, also comprise: power relay, in the circuit between the first end being connected in series in described reference edge and described external power source.
According to an embodiment of the present utility model, described high-tension transformer also comprises secondary winding; Described microwave oven circuit also comprises: magnetron, is connected to described secondary winding.
According to an embodiment of the present utility model, described switching device comprises voltage relay.
According to an embodiment of the present utility model, the first end of described external power source is the live wire of civil power, and the second end of described external power source is the zero line of civil power.
According to an embodiment of the present utility model, the size of the input voltage that described control circuit detects according to described voltage check device controls corresponding switching device in described multiple switching device and closes.
According to the embodiment of the utility model second aspect, also proposed a kind of microwave oven, comprising: the microwave oven circuit of the adaptive input voltage as described in above-mentioned any one embodiment.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 shows the structural representation of the microwave oven circuit proposed in correlation technique;
Fig. 2 shows the structural representation of the microwave oven circuit of the adaptive input voltage according to embodiment of the present utility model.
Embodiment
In order to more clearly 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, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail 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 by the restriction of following public specific embodiment.
Fig. 2 shows the structural representation of the microwave oven circuit of the adaptive input voltage according to embodiment of the present utility model.
As shown in Figure 2, according to the microwave oven circuit of the adaptive input voltage of embodiment of the present utility model, comprise: high-tension transformer 1, described high-tension transformer 1 comprises armature winding, described armature winding has a reference edge 11 and multiple terminals, described reference edge 11 is connected to the first end of external power source, and any two terminals in described multiple terminals are not identical with the coil turn between described reference edge 11; Multiple switching device 2, the first end of each switching device 2 in described multiple switching device 2 is connected to the second end of described external power source, and the second end correspondence of described each switching device 2 is connected to terminals in described multiple terminals; Voltage check device 3, for detecting the input voltage of described external power source; Control circuit 4, is connected to described voltage check device 3 and described each switching device 2, and arbitrary switching device 2 that described control circuit 4 can trigger in described multiple switching device 2 closes.
The situation that armature winding has a reference edge 11 and three terminals is illustrate only in Fig. 2, it should be appreciated by those skilled in the art that armature winding also can have the terminals of two terminals or more than three, and in Fig. 2, eliminate the annexation of control circuit 4 and each switching device 2.
Because any two terminals on the armature winding of high-tension transformer 1 are different from the coil turn between reference edge 11, therefore the input voltage by arranging voltage check device 3 pairs of external power sources detects, and control circuit 4 is set triggers corresponding switching device 2, make it possible to the difference of the input voltage according to external power source, control the coil turn of place in circuit in high-tension transformer 1 armature winding, and then can guarantee when input voltage is different, the voltage of high-tension transformer 1 primary side can remain unchanged, to guarantee that microwave oven exports identical power when input voltage is different, avoid and develop many moneys high-tension transformer 1 for different input voltages and increase the production cost of product.
According to the microwave oven circuit of the adaptive input voltage of above-described embodiment of the present utility model, following technical characteristic can also be had:
According to an embodiment of the present utility model, described voltage check device 3 comprises: current transformer, is connected in series in the circuit between described reference edge 11 and the first end of described external power source.
According to an embodiment of the present utility model, also comprise: master switch 5, be connected in series in the circuit between the first end of described each switching device 2 and the second end of described external power source.
According to an embodiment of the present utility model, also comprise: protective tube 6, be connected in series in the circuit between the first end of described each switching device 2 and the second end of described external power source.
According to an embodiment of the present utility model, also comprise: power relay 7, be connected in series in the circuit between described reference edge 11 and the first end of described external power source.
According to an embodiment of the present utility model, described high-tension transformer 1 also comprises secondary winding; Described microwave oven circuit also comprises: magnetron 8, is connected to described secondary winding, to produce power output 9.
According to an embodiment of the present utility model, described switching device 2 comprises voltage relay.
According to an embodiment of the present utility model, the first end of described external power source is the live wire of civil power, and the second end of described external power source is the zero line of civil power.
According to an embodiment of the present utility model, the size of the input voltage that described control circuit 4 detects according to described voltage check device 3 controls corresponding switching device 2 in described multiple switching device 2 and closes.
On the basis of foregoing circuit structure, below describe control procedure of the present utility model in detail:
As shown in Figure 2, when power line connects external voltage, the voltage flow through on live wire can arrive on voltage relay (i.e. switching device 2) by protective tube 6 and master switch 5; Voltage simultaneously on zero line can by power relay 7 on an end points of the armature winding of high-tension transformer 1.
If input voltage is unknown voltage, then this unknown voltage can pass through current transformer (i.e. voltage check device 3) and control circuit 4 identifies this voltage swing.
Such as: when the supply voltage in user family is 230V, after microwave oven plug-in, first current transformer and control circuit 4 identify the size of supply voltage, then corresponding voltage relay conducting is selected, be connected with the terminal (terminal corresponding to 230V) corresponding on high-tension transformer 1, and other relay is off-state, and then by the booater voltage that the voltage of armature winding can produce more than 2000V on the secondary winding of high-tension transformer 1, magnetron 8 is worked, finally produce power output 9.
The technical solution of the utility model achieves the supply voltage being applicable to multiple different regions with a microwave oven, make it possible under the prerequisite not changing high-tension transformer, ensure that the power output of microwave oven is constant, be conducive to the standardized production realizing high-tension transformer, reduce the production cost of product.
The utility model also proposed a kind of microwave oven, comprising: the microwave oven circuit of adaptive input voltage as shown in Figure 2.
More than be described with reference to the accompanying drawings the technical solution of the utility model, the utility model proposes a kind of microwave oven circuit of new adaptive input voltage, on the basis of production cost not increasing microwave oven, can guarantee that microwave oven exports identical power when input voltage is different.
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 amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (10)
1. a microwave oven circuit for adaptive input voltage, is characterized in that, comprising:
High-tension transformer, described high-tension transformer comprises armature winding, described armature winding has a reference edge and multiple terminals, and described reference edge is connected to the first end of external power source, and any two terminals in described multiple terminals are not identical with the coil turn between described reference edge;
Multiple switching device, the first end of each switching device in described multiple switching device is connected to the second end of described external power source, and the second end correspondence of described each switching device is connected to terminals in described multiple terminals;
Voltage check device, for detecting the input voltage of described external power source;
Control circuit, is connected to described voltage check device and described each switching device, and arbitrary switching device that described control circuit can trigger in described multiple switching device closes.
2. the microwave oven circuit of adaptive input voltage according to claim 1, is characterized in that, described voltage check device comprises:
Current transformer, in the circuit between the first end being connected in series in described reference edge and described external power source.
3. the microwave oven circuit of adaptive input voltage according to claim 1, is characterized in that, also comprise:
Master switch, is connected in series in the circuit between the first end of described each switching device and the second end of described external power source.
4. the microwave oven circuit of adaptive input voltage according to claim 1, is characterized in that, also comprise:
Protective tube, is connected in series in the circuit between the first end of described each switching device and the second end of described external power source.
5. the microwave oven circuit of adaptive input voltage according to claim 1, is characterized in that, also comprise:
Power relay, in the circuit between the first end being connected in series in described reference edge and described external power source.
6. the microwave oven circuit of adaptive input voltage according to claim 1, is characterized in that, described high-tension transformer also comprises secondary winding;
Described microwave oven circuit also comprises:
Magnetron, is connected to described secondary winding.
7. the microwave oven circuit of adaptive input voltage according to any one of claim 1 to 6, is characterized in that, described switching device comprises voltage relay.
8. the microwave oven circuit of adaptive input voltage according to any one of claim 1 to 6, is characterized in that, the first end of described external power source is the live wire of civil power, and the second end of described external power source is the zero line of civil power.
9. the microwave oven circuit of adaptive input voltage according to any one of claim 1 to 6, it is characterized in that, the size of the input voltage that described control circuit detects according to described voltage check device controls corresponding switching device in described multiple switching device and closes.
10. a microwave oven, is characterized in that, comprising: the microwave oven circuit of adaptive input voltage as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520292529.5U CN204539526U (en) | 2015-05-07 | 2015-05-07 | The microwave oven circuit of adaptive input voltage and microwave oven |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520292529.5U CN204539526U (en) | 2015-05-07 | 2015-05-07 | The microwave oven circuit of adaptive input voltage and microwave oven |
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| CN204539526U true CN204539526U (en) | 2015-08-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111061178A (en) * | 2019-09-29 | 2020-04-24 | 浙江苏泊尔家电制造有限公司 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
| CN112578697A (en) * | 2019-09-29 | 2021-03-30 | 浙江苏泊尔家电制造有限公司 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
-
2015
- 2015-05-07 CN CN201520292529.5U patent/CN204539526U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111061178A (en) * | 2019-09-29 | 2020-04-24 | 浙江苏泊尔家电制造有限公司 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
| CN112578697A (en) * | 2019-09-29 | 2021-03-30 | 浙江苏泊尔家电制造有限公司 | Method and circuit system for controlling cooking appliance based on voltage and cooking appliance |
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