CN204636250U - A kind of dish-washing machine and draining pump operating condition checkout gear thereof - Google Patents
A kind of dish-washing machine and draining pump operating condition checkout gear thereof Download PDFInfo
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- CN204636250U CN204636250U CN201520164557.9U CN201520164557U CN204636250U CN 204636250 U CN204636250 U CN 204636250U CN 201520164557 U CN201520164557 U CN 201520164557U CN 204636250 U CN204636250 U CN 204636250U
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Abstract
The utility model belongs to dish-washing machine dynamical system detection technique field, provides a kind of dish-washing machine and draining pump operating condition checkout gear thereof.Draining pump operating condition checkout gear comprises primary coil, circular magnetic core, Hall element and tension measuring circuit, draining pump operationally obtains operating current by primary coil, primary coil is followed the magnetic field that this operating current produces and is gathered in circular magnetic core, Hall element detects this magnetic field and exports corresponding detection signal to tension measuring circuit, corresponding measuring voltage is exported to controller according to this detection signal again by tension measuring circuit, then controller just can judge the operating condition of draining pump according to this measuring voltage, can draining pump be kept to work on when sewage is not yet thoroughly discharged by draining pump, to avoid polluting the secondary water inlet of dish-washing machine, and then promote the washing (-)off properties of dish-washing machine, and draining pump can be controlled when completing draining quit work to avoid to cause because of no-load running noise to produce and energy consumption is wasted.
Description
Technical field
The utility model belongs to dish-washing machine dynamical system detection technique field, particularly relates to a kind of dish-washing machine and draining pump operating condition checkout gear thereof.
Background technology
At present, the drainage system of dish washer interior will wash the residue after terminating and sewage discharge dish-washing machine by draining pump.In existing dish-washing machine, draining pump adopts the mode of timing drainage to control, and when reaching water discharge time, no matter whether completes draining, and dish-washing machine all can enter next step operation.If dish-washing machine enters next step operation, then draining can be caused not thorough, and the sewage residued in dish-washing machine can pollute secondary water inlet, and then affect the wash cleanliness of dish-washing machine.And if draining has completed, but water discharge time is long, then can cause draining pump still in no-load running after completing draining, thus causes the generation of noise and energy consumption can be caused to waste.
Utility model content
The purpose of this utility model is the draining pump operating condition checkout gear providing a kind of dish-washing machine, be intended to solve existing dish-washing machine because its draining pump is according to timing drainage, there is causing because water discharge time is not enough draining not thoroughly and secondary is intake the problem polluted, or occur that draining pump has completed draining but still no-load running and cause the generation of noise and the problem causing energy consumption to waste because water discharge time is long.
The utility model realizes like this, a kind of draining pump operating condition checkout gear of dish-washing machine, be connected with the controller in described dish-washing machine, described controller judges the operating condition of draining pump according to the measuring voltage that described draining pump operating condition checkout gear feeds back, and the operating condition of corresponding described draining pump controls the start and stop of described draining pump;
Described draining pump operating condition checkout gear comprises:
Primary coil, circular magnetic core, Hall element and tension measuring circuit;
First end and second end of described primary coil are connected the positive terminal of positive source and described draining pump respectively, the negative terminal of described draining pump connects power cathode, described primary coil is around the side being arranged at described circular magnetic core, described Hall element is arranged in the air gap of described circular magnetic core, first end and second end of described Hall element are connected first input end and second output of described tension measuring circuit respectively, and the output of described tension measuring circuit is connected described controller with ground end;
Described draining pump operationally obtains operating current by described primary coil, described primary coil is followed the magnetic field that described operating current produces and is gathered in described circular magnetic core, described Hall element detects described magnetic field and exports corresponding detection signal to described tension measuring circuit, and described tension measuring circuit exports corresponding measuring voltage to described controller according to described detection signal.
The utility model additionally provides a kind of dish-washing machine comprising above-mentioned draining pump operating condition checkout gear.
The utility model comprises primary coil by adopting in dish-washing machine, circular magnetic core, the draining pump operating condition checkout gear of Hall element and tension measuring circuit, draining pump operationally obtains operating current by primary coil, primary coil is followed the magnetic field that this operating current produces and is gathered in circular magnetic core, Hall element detects this magnetic field and exports corresponding detection signal to tension measuring circuit, corresponding measuring voltage is exported to controller according to this detection signal again by tension measuring circuit, then controller just can judge the operating condition of draining pump according to this measuring voltage, can draining pump be kept to work on when sewage is not yet thoroughly discharged by draining pump, to avoid polluting the secondary water inlet of dish-washing machine, and then promote the washing (-)off properties of dish-washing machine, and draining pump can be controlled when completing draining quit work to avoid to cause because of no-load running noise to produce and energy consumption is wasted.
Accompanying drawing explanation
Fig. 1 is the structure chart of the draining pump operating condition checkout gear of the dish-washing machine that the utility model embodiment provides;
Fig. 2 is the exemplary circuit structure chart of the draining pump operating condition checkout gear shown in Fig. 1.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the structure of the draining pump operating condition checkout gear of the dish-washing machine that the utility model embodiment provides, and for convenience of explanation, illustrate only the part relevant to the utility model embodiment, details are as follows:
Draining pump operating condition checkout gear 100 is connected with the controller 200 in dish-washing machine, controller 200 judges the operating condition of draining pump according to the measuring voltage that draining pump operating condition checkout gear 100 feeds back, and the operating condition of corresponding draining pump controls the start and stop of draining pump.
Draining pump operating condition checkout gear 100 comprises:
Primary coil 101, circular magnetic core 102, Hall element 103 and tension measuring circuit 104;
First end and second end of primary coil 101 are connected the positive terminal A of positive source VCC+ and draining pump respectively, the negative terminal B of draining pump connects power cathode VCC-, primary coil 101 is around the side being arranged at circular magnetic core 102, Hall element 103 is arranged in the air gap of circular magnetic core 102, first end and second end of Hall element 103 are connected first input end and second output of tension measuring circuit 104 respectively, the output of tension measuring circuit 104 and ground end connection control device 200.
Draining pump operationally obtains operating current by primary coil 101, primary coil 101 is followed the magnetic field that this operating current produces and is gathered in circular magnetic core 102, Hall element 103 detects this magnetic field and exports corresponding detection signal to tension measuring circuit 104, and tension measuring circuit 104 exports corresponding measuring voltage to controller 200 according to this detection signal.Wherein, controller 200 can be conventional single-chip microcomputer, arm processor or other possess the programming device of mathematical logic disposal ability.
When draining pump works, the change of its load can cause operating current to change, the proportional relation in magnetic field on the electric current flow through in primary coil 101 and circular magnetic core, so the magnetic field that circular magnetic core 102 is assembled also can respective change, Hall element 103 just can feed back corresponding detection signal to tension measuring circuit 104 according to the change in magnetic field, so the measuring voltage that tension measuring circuit 104 exports just can reflect the operating condition of draining pump, operating condition (comprising load state and start and stop state) for controller 200 pairs of draining pumps judges.In addition; when draining pump shuts down; can according to the size variation in magnetic field; corresponding measuring voltage is exported by tension measuring circuit 104; controller 200 can judge that draining pump is in stopped status or locked rotor condition according to this; and disconnect the power supply of draining pump in time or send abnormal alarm prompting, so that user obtains prompting by the warning device of dish-washing machine.
In sum, because draining pump operating condition checkout gear 100 can feed back measuring voltage to controller 200, and this measuring voltage is relevant to the operating current of draining pump, so controller 200 just can judge the operating condition of draining pump according to this measuring voltage, can draining pump be kept to work on when sewage is not yet thoroughly discharged by draining pump, to avoid polluting the secondary water inlet of dish-washing machine, and then promote the washing (-)off properties of dish-washing machine; And draining pump can be controlled when completing draining quit work to avoid to cause because of no-load running noise to produce and energy consumption is wasted.Therefore, by above-mentioned draining pump operating condition checkout gear 100, can monitor the operating condition of the draining pump in dish-washing machine, improve the precision that complete machine controls, significantly improve the energy consumption of complete machine, noise and clean performance indications, and improve the security of dish-washing machine.
Concrete, as shown in Figure 2, tension measuring circuit 104 comprises:
First resistance R1, the second resistance R2, operational amplifier U1, the 3rd resistance R3 and the 4th resistance R4;
The first end of the first resistance R1 and the first end of the second resistance R2 are respectively first input end and second input of tension measuring circuit 104, second end of the first resistance R1 and the first end of the 3rd resistance R3 be connected to altogether the in-phase input end of operational amplifier U1+, second end of the second resistance R2 and the first end of the 4th resistance R4 be connected to altogether the inverting input of operational amplifier U1-, the common contact of second end of the 3rd resistance R3 and the output of operational amplifier U1 is the output of tension measuring circuit 104, second end of the 4th resistance R4 is the ground end of tension measuring circuit 104, positive power source terminal and the negative power end of operational amplifier U1 are connected positive supply+Vc and negative supply-Vc respectively.
For the draining pump operating condition checkout gear 100 shown in Fig. 2, draining pump operationally obtains operating current by primary coil 101, primary coil 101 is followed the magnetic field that this operating current produces and is gathered in circular magnetic core 102, Hall element 103 detects this magnetic field and exports corresponding detection signal, detection signal is entered after operational amplifier U1 carries out operation amplifier process by the first resistance R1 and the second resistance R2 and exports corresponding measuring voltage to controller 200, then controller 200 just can judge the operating condition of draining pump according to this measuring voltage, can draining pump be kept to work on when sewage is not yet thoroughly discharged by draining pump, to avoid polluting the secondary water inlet of dish-washing machine, improve the wash cleanliness of dish-washing machine to tableware, and also can control draining pump when completing draining and quit work, to avoid producing noise and waste energy consumption because of draining pump no-load running.
Based on the application advantage of above-mentioned draining pump operating condition checkout gear 100 in dish-washing machine, the utility model embodiment still provides a kind of dish-washing machine comprising above-mentioned draining pump operating condition checkout gear 100.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (3)
1. the draining pump operating condition checkout gear of a dish-washing machine, be connected with the controller in described dish-washing machine, described controller judges the operating condition of draining pump according to the measuring voltage that described draining pump operating condition checkout gear feeds back, and the operating condition of corresponding described draining pump controls the start and stop of described draining pump; It is characterized in that, described draining pump operating condition checkout gear comprises:
Primary coil, circular magnetic core, Hall element and tension measuring circuit;
First end and second end of described primary coil are connected the positive terminal of positive source and described draining pump respectively, the negative terminal of described draining pump connects power cathode, described primary coil is around the side being arranged at described circular magnetic core, described Hall element is arranged in the air gap of described circular magnetic core, first end and second end of described Hall element are connected first input end and second output of described tension measuring circuit respectively, and the output of described tension measuring circuit is connected described controller with ground end;
Described draining pump operationally obtains operating current by described primary coil, described primary coil is followed the magnetic field that described operating current produces and is gathered in described circular magnetic core, described Hall element detects described magnetic field and exports corresponding detection signal to described tension measuring circuit, and described tension measuring circuit exports corresponding measuring voltage to described controller according to described detection signal.
2. draining pump operating condition checkout gear as claimed in claim 1, it is characterized in that, described tension measuring circuit comprises:
First resistance, the second resistance, operational amplifier, the 3rd resistance and the 4th resistance;
The first end of described first resistance and the first end of described second resistance are respectively first input end and second input of described tension measuring circuit, second end of described first resistance and the first end of described 3rd resistance are connected to the in-phase input end of described operational amplifier altogether, second end of described second resistance and the first end of described 4th resistance are connected to the inverting input of described operational amplifier altogether, the common contact of described second end of the 3rd resistance and the output of described operational amplifier is the output of described tension measuring circuit, second end of described 4th resistance is the ground end of described tension measuring circuit, the positive power source terminal of described operational amplifier is connected positive supply and negative supply respectively with negative power end.
3. a dish-washing machine, is characterized in that, described dish-washing machine comprises draining pump operating condition checkout gear as claimed in claim 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520164557.9U CN204636250U (en) | 2015-03-23 | 2015-03-23 | A kind of dish-washing machine and draining pump operating condition checkout gear thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520164557.9U CN204636250U (en) | 2015-03-23 | 2015-03-23 | A kind of dish-washing machine and draining pump operating condition checkout gear thereof |
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| CN204636250U true CN204636250U (en) | 2015-09-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091948A (en) * | 2017-06-29 | 2017-08-25 | 桐乡昊屹电子有限公司 | The blockage detector and detection method of electronic infusion pump |
| CN109713979A (en) * | 2018-12-22 | 2019-05-03 | 苏州厚盟电子科技有限公司 | A kind of ON-OFF control circuit for reducing drain motor noise |
| CN114209260A (en) * | 2021-12-01 | 2022-03-22 | 珠海格力电器股份有限公司 | Detection drainage control method, system, storage medium, device and dish washing machine |
| WO2022135351A1 (en) * | 2020-12-25 | 2022-06-30 | 海尔智家股份有限公司 | Water supply pump inspection method |
-
2015
- 2015-03-23 CN CN201520164557.9U patent/CN204636250U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091948A (en) * | 2017-06-29 | 2017-08-25 | 桐乡昊屹电子有限公司 | The blockage detector and detection method of electronic infusion pump |
| CN109713979A (en) * | 2018-12-22 | 2019-05-03 | 苏州厚盟电子科技有限公司 | A kind of ON-OFF control circuit for reducing drain motor noise |
| WO2022135351A1 (en) * | 2020-12-25 | 2022-06-30 | 海尔智家股份有限公司 | Water supply pump inspection method |
| CN114209260A (en) * | 2021-12-01 | 2022-03-22 | 珠海格力电器股份有限公司 | Detection drainage control method, system, storage medium, device and dish washing machine |
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Effective date of registration: 20221214 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311 Beijiao Town Industrial Park, Shunde District, Foshan City, Guangdong Province Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |