CN203897996U - Foam detection device in electric cooker and electric cooker - Google Patents
Foam detection device in electric cooker and electric cooker Download PDFInfo
- Publication number
- CN203897996U CN203897996U CN201420226637.8U CN201420226637U CN203897996U CN 203897996 U CN203897996 U CN 203897996U CN 201420226637 U CN201420226637 U CN 201420226637U CN 203897996 U CN203897996 U CN 203897996U
- Authority
- CN
- China
- Prior art keywords
- foam
- transformer
- electric cooker
- electrode
- output unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cookers (AREA)
Abstract
The utility model discloses a foam detection device in an electric cooker and an electric cooker. The foam detection device in the electric cooker comprises a first electrode and a second electrode and a foam detection circuit for detecting foam. The circuit comprises a transformer, a second transformer and an output unit. The primary side of the first transformer is connected with an alternating current power supply, one end of the secondary side of the first transformer is connected with the first electrode, one end of the primary side of the second transformer is connected with the second electrode, and the secondary side of the second transformer is connected with the output unit. When the first electrode and the second electrode detect foam simultaneously, the first electrode and the second electrode are in short circuit connection, and the output unit outputs a foam detection signal. The foam detection circuit in the foam detection device is isolated from strong electricity connected with an alternating current power supply and the output unit through the first transformer and the second transformer to enable the foam detection device and the strong electricity portion of the electric cooker to be isolated, user safety is ensured, and a user can use the electric cooker conveniently.
Description
Technical field
The utility model relates to household electrical appliance technical field, particularly foam detecting device and the electric cooker with this foam detecting device in a kind of electric cooker.
Background technology
In relevant electric cooker, foam detecting device is generally connected with the electrode that detects thin rice gruel foam, due to this electrode, for perception thin rice gruel foam, conducting forms loop, therefore, generally seal, user can touch, and in correlation technique, this electrode is connected with the strong power part of electric cooker, has potential safety hazard.
In addition, heater in electric cooker is generally in intermittent-heating pattern, when heater does not heat, be that power foam detecting device when closed condition does not now need electric energy completely, but in relevant foam detecting device, power supply circuits still, for its power supply, are wasted electric energy greatly, affect product energy-saving efficiency.
To sum up, in the electric cooker in correlation technique there are improved needs in foam detecting device and electric cooker.
Utility model content
The purpose of this utility model is intended to solve at least to a certain extent one of above-mentioned technological deficiency.
For this reason, an object of the present utility model is to propose foam detecting device in a kind of electric cooker, can with electric cooker in strong power part isolation, guarantee user security, user-friendly.
Another object of the present utility model is to propose a kind of electric cooker.
For achieving the above object, foam detecting device in a kind of electric cooker that the utility model proposes on the one hand, comprising: the first electrode and the second electrode, foam testing circuit for detection of the foam producing in described electric cooker, described foam testing circuit comprises for isolating the first transformer and the second transformer and the output unit of transformation, the primary side of described the first transformer is connected with AC power, one end of the secondary side of described the first transformer is connected with described the first electrode, one end of the primary side of described the second transformer is connected with described the second electrode, the other end of the primary side of described the second transformer is connected with the other end of the secondary side of described the first transformer, the secondary side of described the second transformer is connected with described output unit, wherein, when described the first electrode and the second electrode detect foam simultaneously, short circuit conducting between described the first electrode and the second electrode, described output unit foam output detection signal.
According to foam detecting device in the electric cooker the utility model proposes, when the first electrode and the second electrode detect foam simultaneously, short circuit conducting between the first electrode and the second electrode, the output unit foam output detection signal of foam testing circuit, and foam testing circuit is isolated with the strong power part that AC power is connected with output unit with the second transformer by the first transformer respectively, thereby make the strong power part isolation in foam detecting device and electric cooker, guarantee user security, user-friendly.And this foam detecting device is simple effectively, cost is low, reliability is high.
Particularly, described foam testing circuit also comprises the first resistance between the secondary side two ends that are connected in parallel on described the first transformer.
Particularly, described output unit specifically comprises: the second resistance, and one end of described the second resistance is connected with one end of the secondary side of described the second transformer; The 3rd resistance; Triode, the base stage of described triode is connected with the other end of described the second resistance, ground connection after the emitter-base bandgap grading of described triode is connected with the other end of the secondary side of described the second transformer, the colelctor electrode of described triode is connected with default power supply by described the 3rd resistance, and wherein said output unit is exported described foam detection signal by the colelctor electrode of described triode.
Particularly, described the first transformer and described the second transformer can be linear transformer.
Further, described foam detecting device also comprises: prompting device, and described prompting device is connected with described output unit, and described prompting device sends information after receiving described foam detection signal.
For achieving the above object, the utility model has proposed a kind of electric cooker on the other hand, comprises foam detecting device in described electric cooker.
According to the electric cooker the utility model proposes, can make the strong power part isolation in foam detecting device and electric cooker, guarantee user security, user-friendly.And this foam detecting device is simple effectively, cost is low, reliability is high.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the utility model and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is according to the block diagram of foam detecting device in the electric cooker of the utility model embodiment;
Fig. 2 is according to the circuit theory schematic diagram of foam detecting device in the electric cooker of a specific embodiment of the utility model;
Fig. 3 is according to the block diagram of the electric cooker of the utility model embodiment.
Reference numeral:
Foam detecting device 200, AC power AC, the first electrode DZ1, the second electrode DZ2, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, triode Q1 and default power supply VCC in foam testing circuit 1, the first transformer 10, the second transformer 20, output unit 30, prompting device 2, electric cooker 100, electric cooker.
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
The electric cooker of describing with reference to the accompanying drawings foam detecting device in the electric cooker proposing according to the utility model embodiment and thering is this foam detecting device.
Fig. 1 is according to the block diagram of foam detecting device in the electric cooker of the utility model embodiment.As shown in Figure 1, in this electric cooker, foam detecting device comprises: the first electrode DZ1 and the second electrode DZ2, foam testing circuit 1.
Wherein, the first electrode DZ1 and the second electrode DZ2 can be arranged on the pot cover of electric cooker.
As shown in Figure 1, foam testing circuit 1 is for detection of the foam producing in electric cooker, and foam testing circuit 1 comprises: the first transformer 10 and the second transformer 20 and output unit 30.Wherein, the first transformer 10 and the second transformer 20 are for isolating transformation, the primary side of the first transformer 10 is connected with AC power AC, one end 1 of the secondary side of the first transformer 10 is connected with the first electrode DZ1, one end 4 of the primary side of the second transformer 20 is connected with the second electrode DZ2, the other end 1 of the primary side of the second transformer 20 is connected with the other end 4 of the secondary side of the first transformer 10, the secondary side of the second transformer 20 is connected with output unit 30, wherein, when the first electrode DZ1 and the second electrode DZ2 detect foam simultaneously, short circuit conducting between the first electrode DZ1 and the second electrode DZ2, output unit 30 foam output detection signals.
Particularly, one end 2 of the first transformer 2 primary sides is connected with the live wire of AC power AC, the other end 3 of the first transformer 2 primary sides is connected with the zero line of AC power AC, the secondary side of the first transformer 2 is connected with the input of foam testing circuit 1, thereby the voltage of AC power AC is carried out offering foam testing circuit 1 after transformation isolation, and the second transformer 20 is foam testing circuit 1 and the strong power part isolation that is connected with output unit, thus realize the first electrode DZ1 that user can contact and the second electrode DZ2 can with the strong power part isolation of electric cooker.
In addition, it should be noted that, between the first electrode DZ1 and the second electrode DZ2, disconnect, that is to say, during normal work, while not having water, thin rice gruel or foam rise or overflow in electric cooker, the first electrode DZ1 and the second electrode DZ2 are in open-circuit condition, in electric cooker, foam detecting device is the loop disconnection of foam testing circuit 1, thereby output unit 30 is in the state of quitting work; And while having water, thin rice gruel or foam rise or overflow in electric cooker, the first electrode DZ1 and the second electrode DZ2 are in short-circuit condition, in electric cooker, foam detecting device is that foam testing circuit 1 forms path, thereby output unit 30 is in running order and exportable foam detection signal.
Generally speaking, in the utility model embodiment, when the first electrode DZ1 and the second electrode DZ2 have water, thin rice gruel or foam rise or overflow short circuit conducting in because of electric cooker, output unit 30 foam output detection signals, for example, foam detection signal can be low level voltage signal, and foam detection signal is sent to the control device of electric cooker, and the control device of electric cooker is carried out relevant control according to foam detection signal.For example, the control device of electric cooker can be controlled and prevent that overflow device work is to prevent thin rice gruel or the foam overflow in electric cooker, or the number of times that the control device of electric cooker can rise according to foam detection signal judgement foam, and the number of times rising according to foam control electric cooker runs on the pattern of cooking or the pattern etc. of cooking congee.
In a concrete example of the present utility model, the first transformer 10 and the second transformer 20 can be linear transformer.
Particularly, in an embodiment of the present utility model, as shown in Figure 2, foam testing circuit 1 also comprises: the first resistance R 1.Wherein, the first resistance R 1 is connected in parallel between the secondary side two ends of the first transformer 10.
Particularly, one end of the first resistance R 1 is connected with one end 1 of the secondary side of the first transformer 2, and be connected with one end of the first electrode DZ1, the other end of the first resistance R 1 is connected with the other end 4 of the secondary side of the first transformer 2, and is connected with the other end 1 of the primary side of the second transformer 3.
Particularly, in an embodiment of the present utility model, as shown in Figure 2, output unit 30 specifically comprises: the second resistance R 2, the 3rd resistance R 3 and triode Q1.
Wherein, one end of the second resistance R 2 is connected with one end 3 of the secondary side of the second transformer 3; The base stage of triode Q1 is connected with the other end of the second resistance R 2, ground connection after the emitter-base bandgap grading of triode Q1 is connected with the other end 2 of the secondary side of the second transformer 3, the colelctor electrode of triode Q1 is connected with default power supply VCC by the 3rd resistance R 3, wherein, output unit 30 is by the colelctor electrode foam output detection signal of triode Q1.
That is to say, during normal work, be anhydrous in electric cooker, when thin rice gruel or foam rise or overflow, the first electrode DZ1 and the second electrode DZ2 are in open-circuit condition, in electric cooker, foam detecting device is the loop disconnection of foam testing circuit 1, triode Q1 is in cut-off state, the voltage of triode Q1 colelctor electrode is high level voltage always, the control device of electric cooker is when the voltage that output unit 30 outputs detected is high level voltage always, electric cooker is not carried out to relevant control, now in electric cooker, the stand-by power consumption of foam detecting device is 0, thereby can effectively save electric energy, improve the energy-saving efficiency of product.
In electric cooker, there is water, when thin rice gruel or foam rise or overflow, the first electrode DZ1 and the second electrode DZ2 are in short-circuit condition, in electric cooker, foam detecting device is that foam testing circuit 1 forms path, triode Q1 is in conducting state, at triode Q1 colelctor electrode, low level voltage signal can be detected, the control device of electric cooker is when the voltage signal of output unit 30 output low levels being detected, electric cooker is carried out to relevant control, for example, can control and prevent that overflow device work is to prevent thin rice gruel or the foam overflow in electric cooker according to foam detection signal, or the number of times that can rise according to foam detection signal judgement foam, and the number of times rising according to foam control electric cooker runs on the pattern of cooking or the pattern etc. of cooking congee.
Wherein, it should be noted that, default power supply VCC is DC voltage, can after over commutation, filtering, voltage stabilizing, be offered by AC power AC the triode Q1 of output unit 30.Certainly, default power supply VCC also can be by AC power AC after transformer isolation transformation or after the isolation of punching current transformer, then after over commutation, filtering, voltage stabilizing, offers the triode Q1 of output unit 30.
Further, in an embodiment of the present utility model, as shown in Figure 2, foam detecting device 1 also comprises: prompting device 2.Prompting device 2 is connected with output unit 30, and prompting device 2 sends information after receiving foam detection signal, thereby prompting user clears up thin rice gruel or the foam overflowing in electric cooker, or the operational mode of prompting user electric cooker.
To sum up, foam detecting device in the electric cooker proposing according to the utility model embodiment, when the first electrode and the second electrode detect foam simultaneously, short circuit conducting between the first electrode and the second electrode, the output unit foam output detection signal of foam testing circuit, and foam testing circuit is isolated with the strong power part that AC power is connected with output unit with the second transformer by the first transformer respectively, thereby make the strong power part isolation in foam detecting device and electric cooker, guarantee user security, user-friendly.And this foam detecting device is simple effectively, cost is low, reliability is high.And when anhydrous in electric cooker, thin rice gruel or foam rise or overflow, in electric cooker, foam detecting device quits work, stand-by power consumption is 0, thereby can effectively save electric energy, improves the energy-saving efficiency of product.
Fig. 3 is according to the block diagram of the electric cooker of the utility model embodiment.As shown in Figure 3, electric cooker 100 comprises foam detecting device 200 in above-mentioned electric cooker.
In addition, electric cooker 100 also can comprise control device, and control device can carry out relevant control to electric cooker according to the foam detection signal of 200 outputs of foam detecting device in electric cooker.For example, the control device of electric cooker can be controlled and prevent that overflow device work is to prevent thin rice gruel or the foam overflow in electric cooker according to foam detection signal, or the number of times that the control device of electric cooker can rise according to foam detection signal judgement foam, and the number of times rising according to foam control electric cooker runs on the pattern of cooking or the pattern etc. of cooking congee.
The electric cooker proposing according to the utility model embodiment, can make the strong power part isolation in foam detecting device and electric cooker, guarantees user security, user-friendly.And this foam detecting device is simple effectively, cost is low, reliability is high.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of indications such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, at least one this feature can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is at least two, for example two, and three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " 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, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, the specific features of description, structure, material or feature can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this description or example and different embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (6)
1. a foam detecting device in electric cooker, is characterized in that, comprising:
The first electrode and the second electrode;
Foam testing circuit for detection of the foam producing in described electric cooker, described foam testing circuit comprises for isolating the first transformer and the second transformer and the output unit of transformation, the primary side of described the first transformer is connected with AC power, one end of the secondary side of described the first transformer is connected with described the first electrode, one end of the primary side of described the second transformer is connected with described the second electrode, the other end of the primary side of described the second transformer is connected with the other end of the secondary side of described the first transformer, the secondary side of described the second transformer is connected with described output unit, wherein, when described the first electrode and the second electrode detect foam simultaneously, short circuit conducting between described the first electrode and the second electrode, described output unit foam output detection signal.
2. foam detecting device in electric cooker as claimed in claim 1, is characterized in that, described foam testing circuit also comprises the first resistance between the secondary side two ends that are connected in parallel on described the first transformer.
3. foam detecting device in electric cooker as claimed in claim 1, is characterized in that, described output unit specifically comprises:
The second resistance, one end of described the second resistance is connected with one end of the secondary side of described the second transformer;
The 3rd resistance;
Triode, the base stage of described triode is connected with the other end of described the second resistance, ground connection after the emitter-base bandgap grading of described triode is connected with the other end of the secondary side of described the second transformer, the colelctor electrode of described triode is connected with default power supply by described the 3rd resistance, and wherein said output unit is exported described foam detection signal by the colelctor electrode of described triode.
4. foam detecting device in the electric cooker as described in any one in claim 1-3, is characterized in that, described the first transformer and described the second transformer are linear transformer.
5. foam detecting device in electric cooker as claimed in claim 1, is characterized in that, also comprises:
Prompting device, described prompting device is connected with described output unit, and described prompting device sends information after receiving described foam detection signal.
6. an electric cooker, is characterized in that, comprising:
Foam detecting device in electric cooker as described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226637.8U CN203897996U (en) | 2014-05-05 | 2014-05-05 | Foam detection device in electric cooker and electric cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420226637.8U CN203897996U (en) | 2014-05-05 | 2014-05-05 | Foam detection device in electric cooker and electric cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203897996U true CN203897996U (en) | 2014-10-29 |
Family
ID=51772311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420226637.8U Expired - Fee Related CN203897996U (en) | 2014-05-05 | 2014-05-05 | Foam detection device in electric cooker and electric cooker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203897996U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105982515A (en) * | 2015-02-27 | 2016-10-05 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker, cooking control method thereof and cooking material recognizing method and device |
| CN106264110A (en) * | 2015-05-28 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Electricity cooking pot and the fault detection method of anti-spilled testing circuit when powering on thereof |
| CN106291311A (en) * | 2015-05-28 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Electricity cooking pot and the fault detection method of anti-spilled testing circuit and control method |
| CN112424412A (en) * | 2018-09-13 | 2021-02-26 | 松下知识产权经营株式会社 | Washing machine |
-
2014
- 2014-05-05 CN CN201420226637.8U patent/CN203897996U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105982515A (en) * | 2015-02-27 | 2016-10-05 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooker, cooking control method thereof and cooking material recognizing method and device |
| CN105982515B (en) * | 2015-02-27 | 2017-11-03 | 佛山市顺德区美的电热电器制造有限公司 | Electric cooking pot and its cooking control method, the recognition methods to cooking, device |
| CN106264110A (en) * | 2015-05-28 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Electricity cooking pot and the fault detection method of anti-spilled testing circuit when powering on thereof |
| CN106291311A (en) * | 2015-05-28 | 2017-01-04 | 佛山市顺德区美的电热电器制造有限公司 | Electricity cooking pot and the fault detection method of anti-spilled testing circuit and control method |
| CN106264110B (en) * | 2015-05-28 | 2018-07-17 | 佛山市顺德区美的电热电器制造有限公司 | The fault detection method of electric cooking pot and its while powering on anti-spilled detection circuit |
| CN112424412A (en) * | 2018-09-13 | 2021-02-26 | 松下知识产权经营株式会社 | Washing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203897996U (en) | Foam detection device in electric cooker and electric cooker | |
| CN204797616U (en) | Electric pressure cooker and pressure detection circuit thereof | |
| CN106264110B (en) | The fault detection method of electric cooking pot and its while powering on anti-spilled detection circuit | |
| CN205657861U (en) | Electromagnetic heating cooks device and drive circuit thereof | |
| CN203897995U (en) | Electric cooker, power supply device for same and foam detection system in same | |
| CN205483458U (en) | Family's electric installation and detection circuitry leaks thereof | |
| CN203457344U (en) | Electromagnetic heating device and control circuit thereof | |
| CN205691700U (en) | Photovoltaic DC-to-AC converter aging testing system | |
| CN205483168U (en) | Water level detection circuit and electric rice cooker | |
| CN202076772U (en) | Intelligent power converter | |
| CN205356724U (en) | Electromagnetic heating electric heat pot of low stand -by power consumption | |
| CN203799255U (en) | Control circuit of equipment control cabinet | |
| CN103385305B (en) | A kind of slurrying control circuit of wireless soy bean milk making machine | |
| CN204993117U (en) | Soft starter | |
| CN204535125U (en) | Electric heater and control circuit thereof | |
| CN103334260A (en) | Washing machine and control method thereof | |
| CN203025330U (en) | High-power nonlinear loading box | |
| WO2010053697A3 (en) | Appliance control system with a zero crossing detecting circuit | |
| CN106166023A (en) | Cooker | |
| CN206674226U (en) | Circuit system and cooking apparatus for IH heaters | |
| CN202634259U (en) | Alternating current and direct current dual-purposed power supply control circuit | |
| CN204431679U (en) | A kind of control circuit of injection machine of quick eliminating disconnection fault | |
| CN205015759U (en) | Control clear and definite air -cooled circuit | |
| CN203761147U (en) | Wireless energy transmission device | |
| CN203251453U (en) | electromagnetic heating cooker with low standby power consumption |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20200505 |