CN100413455C - Water over-supply prevention structure of dishwasher and method thereof - Google Patents
Water over-supply prevention structure of dishwasher and method thereof Download PDFInfo
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- CN100413455C CN100413455C CNB2005100138775A CN200510013877A CN100413455C CN 100413455 C CN100413455 C CN 100413455C CN B2005100138775 A CNB2005100138775 A CN B2005100138775A CN 200510013877 A CN200510013877 A CN 200510013877A CN 100413455 C CN100413455 C CN 100413455C
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Abstract
The present invention relates to a water oversupply prevention structure of a dish washer and a method thereof. The water oversupply prevention structure comprises a float meter for detecting the flow of wash water flowing in the washing tank, a hall sensor tightly attached to a lateral surface on the outer part of the float meter for outputting the pulse of the rotation number of the float meter, a microcomputer connected with the hall sensor for detecting the pulse frequency, and a water discharge pump connected with a microcomputer and driven by a water discharge signal sent out by the microcomputer. The water oversupply prevention method comprises a water supply stage that wash water flows in the washing tank, a stage for detecting the water supply flow by the float meter, and a stage judging whether the water supply of the wash water is excess or not by the microcomputer. Under the condition of water oversupply, the water discharge pump connected with the microcomputer is driven to forcibly discharge water. After the washing water of the present invention reaches the normal water level, the wash water of oversupply can be forcibly discharged under the condition of continuous water supply.
Description
Technical field
The excessive feedwater that the present invention relates to a kind of dish-washing machine prevents structure and method thereof.
Background technology
Generally speaking, dish-washing machine is that the washings with high pressure are ejected on the tableware, remove the dirts such as food dreg on the tableware automatically after, dry the household electrical appliance for kitchen use of tableware again.
As Fig. 1, the aor brake 10 of existing dish-washing machine comprises that following components constitutes: be formed at the bottom surface, make the water hose connector 11 of the running water inflow of supplying with by water pipe; The confluent that is used to detect the amount of the water that flows into above-mentioned water hose connector 11 detects with float meter 12; Be arranged on the feedwater stream that forms in the above-mentioned aor brake 10, be used for preventing feeding water and have no progeny, still have the siphon of the siphonage of water inflow to prevent to stitch 13.
In addition, also comprise: be connected with the bucket that is glued with above-mentioned aor brake 10, and make the part of the water that flows into above-mentioned aor brake 10 flow into the interior bucket connector 14 of said bucket; Be used to make the water that flows into above-mentioned aor brake 10 to flow to the water softening device connector 15 of water softening device.
In addition, also comprise: be used to make the part of the water that flows into above-mentioned aor brake 10 to flow to the regenerator connector 16 of regenerator (not shown); For the washings that washing is finished are discharged to the outside by the draining pump (not shown), and the storage tank draining connector 17 that is connected with storage tank; Be used for to flow to the water of above-mentioned storage tank draining connector 17, be discharged to outside scupper hose connector 18 by the draining stream that forms in the above-mentioned aor brake 10.
In addition, check valve of water drainage 19 is installed on the above-mentioned storage tank draining connector 17.Here, the effect of above-mentioned check valve of water drainage 19 is: the washings adverse current that prevents above-mentioned discharge.
Below, will the function of above-mentioned aor brake 10 be described.
At first, the water by water hose connector 11 flows into will flow by the feedwater flow road direction top that forms in the above-mentioned aor brake 10.Then, the water of above-mentioned supply will be fallen the central portion of above-mentioned aor brake 10, focus on above-mentioned water softening device connector 15.Subsequently, flow in the water softening device by above-mentioned water softening device connector 15, and, flow in the storage tank (not shown) via the amberlite grease filter that forms in the water softening device.After this, if the supply of washings continues, the water of above-mentioned aor brake 10 inside will overflow, and the part of the above-mentioned water that overflows will focus on the regenerator connector 16 that above-mentioned water softening device connector 15 next doors form.
In addition, the upper side periphery of above-mentioned aor brake 10 is formed with, and makes the air suction inlet 20 of the opening of air outside inflow.In addition, above-mentioned inhaled air will prevent to stitch 13 with the siphon that forms on the upper lateral part stream of above-mentioned aor brake 10 and be communicated with, and therefore can prevent under the state that feedwater is interrupted the siphonage that water continues to flow into.
In addition, the washings that concentrate on above-mentioned water softening device connector 15 will be removed the impurity that comprises in the water through the amberlite grease filter that possesses in the above-mentioned water softening device, thereby with water softening, that utilizes that water after softening can be more prone to carries out washing work.
In addition, the washings that washing is finished will flow to the draining stream by above-mentioned storage tank draining connector 17, and be discharged to the dish-washing machine outside by the scupper hose (not shown) that is connected with above-mentioned scupper hose connector 18.In addition, focus on a spot of washings of above-mentioned regenerator connector 16, will purify above-mentioned amberlite grease filter through above-mentioned regenerator.
In aforesaid aor brake 10 installs,, therefore can't determine correct flow owing to be the flow that utilizes the frequency adjustment inflow of measuring by the rotation number of float meter.And, because water-supply valve or float meter damage, after reaching ordinary water level, also continue under the situation of glut washings, and the device that can prevent the washings glut is not set in the existing dish-washing machine, be difficult to guarantee the safety of dish-washing machine.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome the defective that existing dish-washing machine exists, and provide a kind of excessive feedwater of dish-washing machine to prevent structure and method thereof, after washings reach ordinary water level, also continue to force to discharge the washings of glut under the situation of feedwater.
The excessive feedwater of dish-washing machine of the present invention prevents that structure from being:
A kind of excessive feedwater of dish-washing machine prevents structure, it is characterized in that: this structure comprises following components: the float meter that is used to detect the flow of the washings that flow into sink inside; One side, outside of being close to above-mentioned float meter is used to export the Hall element of pulse of the rotation number of above-mentioned float meter; Be connected with above-mentioned Hall element, be used to detect the microcomputer of the frequency of above-mentioned pulse; Be connected with above-mentioned microcomputer, according to the draining pump of the draining signal driving of sending in the above-mentioned microcomputer.
The excessive feedwater of aforesaid dish-washing machine prevents structure, if the frequency of the pulse wherein under the ordinary water level of the frequency of the pulse of exporting from above-mentioned Hall element and above-mentioned microcomputer internal reservoir is identical, above-mentioned microcomputer will send the feedwater interrupt signal.
The excessive feedwater of aforesaid dish-washing machine prevents structure, and wherein the frequency of the pulse of exporting in above-mentioned Hall element is greater than the moment of the frequency of the pulse under the ordinary water level of above-mentioned microcomputer internal reservoir, and above-mentioned microcomputer will send the draining pump drive signal.
The excessive feedwater of dish-washing machine of the present invention prevents that method from being:
A kind of excessive feedwater of dish-washing machine prevents method, comprises following several stages: washings flow into the feedwater stage of sink inside; Detect the stage of feedwater flow according to float meter; Judge the excessive feedwater whether stage of above-mentioned washings according to microcomputer; Under the situation of excessive feedwater, the draining pump that is connected with above-mentioned microcomputer drives, thus the stage of forced drainage; It is characterized in that: the stage of above-mentioned detection feedwater flow includes: the stage of the impeller of above-mentioned float meter rotation, and the Hall element of a side of being close to the outside of above-mentioned float meter is exported stage of pulse of the rotation number of above-mentioned impeller.
The excessive feedwater of aforesaid dish-washing machine prevents method, judge that wherein the excessive feedwater whether stage includes: if the pulse frequency of Hall element output is less than the frequency of regulation, then continue feedwater, and in the identical moment of frequency of the pulse that stores from the frequency of the pulse of above-mentioned Hall element output and above-mentioned microcomputer, above-mentioned microcomputer sends the stage of feedwater interrupt signal; After above-mentioned feedwater interrupt signal is sent, also continue under the situation of output pulse from above-mentioned Hall element, above-mentioned microcomputer sends the stage of forced drainage signal and alarm signal.
The excessive feedwater of aforesaid dish-washing machine prevents method, after the interrupt signal that wherein feeds water is sent, no longer exports in above-mentioned Hall element under the situation of pulse, then enters the stage of normal washing process.
The present invention it is hereby ensured the security of dish-washing machine owing to can prevent the phenomenon of washings glut to sink inside.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the sectional drawing of the aor brake in the existing dish-washing machine.
Fig. 2 is the sectional schematic diagram of the dish-washing machine of aor brake structure of the present invention.
Fig. 3 is the cross-sectional side view of the dish-washing machine of pocket brake structural of the present invention.
Fig. 4 is the sectional drawing of aor brake structure of the present invention.
Fig. 5 is the floor map that the excessive feedwater of dish-washing machine of the present invention prevents structure.
Fig. 6 is the histogram of flow detector.
Fig. 7 is the flow chart that the excessive feedwater of dish-washing machine of the present invention prevents method.
100: dish-washing machine 110: bucket 111: door
120: upper grid 130: bottom grid 140: water guider
150: top jet pipe 160: bottom bullnose 170: storage tank
180: washing pump 190: motor 200: aor brake
210: water hose connector 220: buoy 230: air suction inlet
240: bucket connector 250: siphon prevents check valve 260: adverse current prevents check valve
300: microswitch 310: contact terminal
The specific embodiment
As shown in Figures 2 and 3, the dish-washing machine 100 with aor brake structure of the present invention comprises following components: form outward appearance, and the inner bucket 110 that is formed with the dishwashing detergent groove; Be formed at the front of said bucket 110, be used to open and close the door 111 of sink; Be formed at the bottom central part of said bucket 110, be used to store the storage tank 170 of washings.
Detailed says that the present invention also comprises: be close to the lateral surface of said bucket 110, will washing water supplied be transported to above-mentioned storage tank 170 from waterworks, and possess the aor brake 200 of the device that the control feedwater flow is arranged.
In addition, the present invention also comprises: be connected with above-mentioned storage tank 170, high pressure aspirates the washing pump 180 of the washings that store in the above-mentioned storage tank 170; The back of being close to above-mentioned washing pump 180 drives the motor 190 of above-mentioned washing pump 180.
In addition, the present invention also comprises: as the water guider 140 of the mobile passage of the washings of suction from above-mentioned washing pump 180; Be arranged at above-mentioned storage tank 170 above, and be formed at the bottom surface of above-mentioned sink, to the bottom bullnose 160 of upside jet cleaning water; The upper lateral part of being close to above-mentioned water guider 140, and from above-mentioned water guider 140 after vertical direction prolong to form, be positioned at the top jet pipe 150 of the central portion of above-mentioned sink; Be formed at the top of said bucket, to the top jet pipe 155 of vertical lower jet cleaning water.
In addition, the present invention also comprises: for the washings wash dining set that utilizes above-mentioned top jet pipe 150 to spray, and be installed on the upper grid 120 of the upper lateral part of above-mentioned top jet pipe 150; For the washings wash dining set that utilizes above-mentioned bottom bullnose 160 to spray, and be installed on the bottom grid 130 of the upper lateral part of above-mentioned bottom bullnose 160.
Detailed says, above-mentioned upper grid 120 is supported by the guide rail (not shown) of the medial surface setting of said bucket 110, and above-mentioned upper grid forwards, backwards direction move.
Below, will the driving process of aforesaid dish-washing machine 100 of the present invention be described.
At first, the user opens the door 111 of dish-washing machine 100 earlier, and above-mentioned upper grid 120 and/or bottom grid 130 are pulled out to the sink outside.Subsequently, again tableware is placed in the above-mentioned grid 120,130.Then, close above-mentioned door 111, and supply power, thereby above-mentioned dish-washing machine is driven.
In addition, in case power supply is supplied to dish-washing machine 100, begin to enter the washing stage, the washings of carrying from water-supply source will flow into above-mentioned storage tank 170 inside that are connected with above-mentioned aor brake 200 usefulness flexible pipes via above-mentioned aor brake 200.After a certain amount of washings flow into storage tank inside, above-mentioned motor 190 will drive.Then, be connected, and the impeller (not shown) that is arranged at above-mentioned washing pump 180 inside will rotate, thereby washings will be drawn into above-mentioned bottom bullnose 160 and above-mentioned water guider 140 with 190 in above-mentioned motor.
In addition, the washings that are drawn into above-mentioned water guider 140 will finally flow to above-mentioned top jet pipe 155 and above-mentioned top jet pipe 150, be ejected into sink inside.Then, utilize the washings of above-mentioned injection that the tableware of accommodating in the above-mentioned grid 120,130 is washed.
Here, above-mentioned top jet pipe 155 will be to vertical lower jet cleaning water, and 150 of above-mentioned top jet pipes are to vertical direction jet cleaning water, thereby can the tableware that above-mentioned upper grid 120 is accommodated be washed.
In addition, above-mentioned bottom bullnose 160 will be to vertical direction jet cleaning water, thereby can the tableware that above-mentioned bottom grid 130 is accommodated be washed.In addition, also be formed with jet in the bottom surface of above-mentioned top jet pipe 150, therefore both direction jet cleaning water up and down, thus the upper side of the tableware of can be simultaneously above-mentioned bottom grid 130 being accommodated washs.
In addition, in case above-mentioned washing process finishes, the contaminated washings that focus on above-mentioned storage tank 170 will filter out foreign matter by the filter (not shown).The above-mentioned washings that filter out foreign matter will be by the draining pump (not shown) to above-mentioned dish-washing machine 100 outside discharges.
In addition,, have clean washings and flow into above-mentioned storage tank 170 once more, and be same as the above-mentioned washing stage, eject by above-mentioned injection jet pipe 150,160 by inflow entrance in case above-mentioned washings are discharged to the outside.Dish-washing machine will utilize the clean washings of above-mentioned injection, and above-mentioned tableware is cleaned.
In case above-mentioned cleaning process finishes, and will finally finish washing work through drying course.
As shown in Figure 4, aor brake 200 of the present invention is close to the lateral surface of bucket 110.The effect of above-mentioned aor brake 200 is: washings are transported in the storage tank 170 that the bottom surface of said bucket 110 is provided with.
Detailed says, above-mentioned aor brake 200 comprises following components: at last side periphery with a certain size opening, thereby can suck the air suction inlet 230 of room air; Be formed at bottom surface one side, be used to supply with the water hose connector 210 of the required water of dishwashing detergent; Make the mobile feedwater stream 213 of washings that flows into by above-mentioned water hose connector 210.
In addition, also comprise: be positioned at the end of above-mentioned feedwater stream 213, owing to the effect of washings is rotated, thus the float meter 211 of detection flow; Be formed at the general central portion of above-mentioned aor brake 200, connect the side of said bucket 110, thus the sink air suction inlet 240 that the inner and above-mentioned air suction inlet 230 of sink is communicated with.
Detailed says, the shape of above-mentioned feedwater stream 213 probably is: to upper vertical, and after bending on the certain height, reconnect to the reverse U shape shape of bottom from the bottom.In addition, the end of above-mentioned feedwater stream is provided with above-mentioned float meter 211.In addition, the washings inflow entrance 214 of above-mentioned float meter 211 is formed upward, thereby can utilize the free-falling strength of above-mentioned washings, make the above-mentioned float meter 211 inner impeller rotations that form.
As mentioned above, why will make the shape of feedwater stream 213 be the reverse U shape shape, and the reason that the washings inflow entrance 214 of above-mentioned float meter 211 is formed upward is: generally speaking, float meter can't detect 0.5kg/cm
2Low hydraulic pressure.Therefore, under the very low condition of hydraulic pressure, also can be accurate detect feedwater flow, the present invention even there are very a spot of washings to flow into, also can make the impeller rotation of float meter 211 according to the deadweight of the washings of above-mentioned inflow.
More detailed says, the present invention also comprises: propagate into the outside in order to prevent the inner noise that produces of sink by above-mentioned air suction inlet 230, and prolong certain-length and the 1st air guide wall 231 that is formed slopely at a certain angle from the upper side of above-mentioned aor brake 200.In addition, also comprise: contact with the outer peripheral face of above-mentioned sink air suction inlet 240, and be formed slopely at a certain angle, make air suction passage probably be the 2nd air guide wall 232 of S word shape from above-mentioned air suction inlet 230 to above-mentioned sink air suction inlet 240.
In addition, aor brake 200 of the present invention also comprises: washings flow export 215 and storage tank feedwater connector 212.Here, the effect of above-mentioned washings flow export 215 is: will the washings of the impeller rotation in the above-mentioned float meter 211 be discharged through above-mentioned washings inflow entrance 214.And the effect of above-mentioned storage tank feedwater connector 212 is: as making the inlet that flows into above-mentioned storage tank 170 by the washings of above-mentioned washings flow export 215.
In addition, the present invention also comprises: to flow into the rising water stage of the washings of above-mentioned storage tank 170 inside in order detecting by above-mentioned storage tank feedwater connector 212, and to be positioned at the buoy 220 of above-mentioned storage tank feedwater connector 212 upper ends; Be positioned at the upper lateral part of above-mentioned buoy 220, along with the rising or the decline of above-mentioned buoy 220, the pole beacon 221 that together rises or descend; Accommodate above-mentioned buoy 220, and the buoy case that above-mentioned buoy 220 is moved up and down; Be formed at the upper lateral part of above-mentioned pole beacon 221, detect the microswitch 300 that overflows water level.
In addition, the present invention also comprises: be provided with in order to make above-mentioned pole beacon 221 and above-mentioned buoy 220 at interval certain slits, and support the pole beacon supporting walls 222 of above-mentioned pole beacon 221; Move up and down in order to make above-mentioned pole beacon 221 connect above-mentioned pole beacon supporting walls 222, and be formed at the pole beacon through slot 223 of above-mentioned pole beacon supporting walls 222.
Detailed says, as shown in Figure 4, above-mentioned buoy 220 is arranged on the feedwater stream, therefore the pollutant of the bottom of being close to above-mentioned buoy 220 is cleared up automatically, thereby can prevent the phenomenon of the water level in the wrong detection sink.
In addition, the bottom of above-mentioned microswitch 300 is formed with certain length and protrudes the contact terminal 310 that the back contacts with the upper end of above-mentioned pole beacon 221.In case the water level in the sink reaches margin line, the upper end of above-mentioned pole beacon 221 will be to above-mentioned contact terminal 310 pressurizations.In case above-mentioned contact terminal 310 is pressurized, the washings that flow into above-mentioned dish-washing machine 100 inside are supplied with interrupted, perhaps drive draining pump, thereby can prevent to supply water the excessive leakage accident that causes.
More detailed says, the washings that supply to above-mentioned storage tank 170 inside will be heated to uniform temperature by the heater of installing in the above-mentioned storage tank 170.In addition, for the moisture vapor transfer that produces in the washings that prevent above-mentioned heating arrives microswitch 300, cause wrong the driving or the electrical equipment problem, and for the change of the water level margin line that can be easy to tackle the different product model, above-mentioned buoy 220 separates formation with above-mentioned pole beacon 221.In other words, under the situation of above-mentioned dish-washing machine driven, above-mentioned pole beacon 221 can be blocked above-mentioned pole beacon through slot 223, therefore can prevent that moisture vapor transfer from arriving above-mentioned microswitch 300.In addition, because the specifications vary of above-mentioned buoy 220 can be tackled flexibly according to the capacity of dish-washing machine in the at interval certain slit of the downside end of the upper side of above-mentioned buoy 220 and above-mentioned pole beacon 221 therefore.
In addition, the present invention also comprises: be formed at the bottom surface of above-mentioned aor brake 200, make the storage tank draining connector 261 by the contaminated washings inflow of draining pump (not shown) suction; Make the mobile draining stream 263 of washings that flows into above-mentioned storage tank draining connector 261; Be formed at the end of above-mentioned draining stream, the scupper hose connector 262 that is connected with scupper hose.
In addition, the present invention also comprises: be installed on the upper lateral part of above-mentioned draining stream 263, be used for preventing to have no progeny in draining, washings still continue to prevent check valve 250 by the siphon of the siphonage of above-mentioned draining stream 263 discharges; Be used to prevent above-mentioned script by storage tank draining connector 261 in above-mentioned draining stream 263 washing water flowing adverse current prevents check valve 260 to the adverse current of the phenomenon of draining pump once more because draining is interrupted.
Detailed says, above-mentioned siphon prevents that check valve 250 is contained in the check valve with a certain size and accommodates in the case 254.In addition, the upper lateral part of above-mentioned draining stream 263 is formed with the drainpipe intercommunicating pore 252 with a certain size.In addition, above-mentioned siphon prevents that check valve 250 from accommodating the upper side wall of case 254, is formed with to make to protrude to be formed at the back shaft through slot 251 that above-mentioned siphon prevents that the check valve back shaft 253 of check valve 250 from connecting.
More detailed says, by the part of above-mentioned air suction inlet 230 leaked-in airs, will flow into above-mentioned check valve by above-mentioned back shaft through slot 251 and accommodate in the case 254.In addition, flow into above-mentioned check valve and accommodate air in the case 254, will be by the above-mentioned draining stream of above-mentioned drainpipe intercommunicating pore 252 inflows 263 inside.In addition, above-mentioned siphon prevents that check valve 250 from being to make by having very easily natant rubber material, and its upper end is the form of taper, thereby can airtight fully above-mentioned back shaft through slot 251.
Below, will the course of work and the function of above-mentioned aor brake 200 be described in detail.
At first, no matter whether above-mentioned dish-washing machine 100 drives,, will flow into and outflow by above-mentioned sink air suction inlet 240 by above-mentioned air suction inlet 230 leaked-in airs.In addition, in case there is power supply to supply with in the above-mentioned dish-washing machine 100, water will flow into by water hose connector 210, and the water of above-mentioned inflow will flow by above-mentioned feedwater stream 213.In addition, will fall, thereby make the impeller rotation of installing in the above-mentioned float meter 211 by above-mentioned feedwater stream 213 washing water flowing.In addition, the speed of the rotation number of above-mentioned impeller will be sent in the control part of dish-washing machine 100, thereby can judge the confluent of inflow.
In addition, along with the water level that flows into the washings in the above-mentioned storage tank 170 rises, above-mentioned buoy 220 also will rise simultaneously.In addition, along with the rising of above-mentioned buoy 220, the above-mentioned pole beacon 221 that is positioned at the upper lateral part of above-mentioned buoy 220 also will together rise.In case the pressurization of the contact terminal 310 of 221 pairs of above-mentioned microswitches 300 of above-mentioned pole beacon, above-mentioned microswitch 300 just can detect, and detected signal is sent to the control part of above-mentioned dish-washing machine 100, and owing to above-mentioned signal, feedwater work will be interrupted.
In addition, after washing process finishes, discharge for the washings that will contain food dreg, draining pump will drive, because the driving of draining pump, the washings of suction will flow into by above-mentioned storage tank draining connector 261.Then, washings will flow to above-mentioned scupper hose connector 262 by above-mentioned draining stream 263, and finally be discharged to the outside by the scupper hose that is connected with above-mentioned scupper hose connector 262.
In addition, by the part in above-mentioned draining stream 263 washing water flowing, will escape to above-mentioned drainpipe intercommunicating pore 252 owing to the effect of hydraulic pressure.Then, the above-mentioned washings that spill will flow into above-mentioned check valve and accommodate case 254, because the washings of above-mentioned inflow, above-mentioned siphon prevents that check valve 250 from will rise.And when above-mentioned siphon prevented that check valve 250 from rising, the siphon that forms the shape of taper prevented that the upper lateral part of check valve from will block above-mentioned back shaft through slot 251.
In addition, have no progeny in the draining, the amount of washing water flowing will reduce on above-mentioned draining stream 263, and being filled in the washings that above-mentioned check valve accommodates in the case 254 will be by above-mentioned drainpipe intercommunicating pore 252 discharge.And above-mentioned siphon prevents that check valve 250 from also will together descend, thereby makes above-mentioned back shaft through slot 251 openings.In addition, by the extraneous air that above-mentioned air suction inlet 230 flows into, will accommodate case 254, and above-mentioned drainpipe intercommunicating pore 252 flows into above-mentioned draining stream 263 by above-mentioned back shaft through slot 251, above-mentioned check valve.Its result, because above-mentioned leaked-in air will be full of air in the above-mentioned draining stream 263, the siphonage in the time of therefore can draining taking place.
As Fig. 5 and shown in Figure 6, the excessive feedwater of dish-washing machine of the present invention prevents that structure from comprising following components.Float meter 211: the inside of above-mentioned float meter is provided with the impeller 400 that rotates owing to the effect of the washings that fall along the feedwater stream; The magnet that has magnetic 500 of being close to the rotating shaft of above-mentioned impeller 400.
In addition, also comprise: the Hall element 600 that is used to detect the pulse that the rotation by above-mentioned magnet 500 produces; Be connected with above-mentioned Hall element 600, by calculating the frequency of the output waveform that transmits in the above-mentioned Hall element 600, the microcomputer 700 of control flow; Be connected with above-mentioned microcomputer 700, under the situation of the waveform more than the frequency of output regulation, the draining pump 800 that washings are discharged.
Below, will be described in detail the anti-locking apparatus of above-mentioned excessive feedwater.
At first, the washings that flow down along the feedwater stream will touch above-mentioned impeller 400, thereby make above-mentioned impeller 400 rotations.Along with the rotation of above-mentioned impeller 400, the magnet 500 of being close to the rotating shaft of above-mentioned impeller 400 also will together rotate.In addition, above-mentioned Hall element 600 detects the changes of magnetic field of above-mentioned magnet 500 generations and produces pulse P.And the pulse P that produces from above-mentioned Hall element 600 will be sent to above-mentioned microcomputer 700,700 frequencies that determine above-mentioned pulse P of above-mentioned microcomputer.
Detailed says, the frequency of above-mentioned pulse P promptly is equivalent to the rotation number of above-mentioned impeller 400, and therefore, above-mentioned microcomputer 700 will compare judgement to the frequency of above-mentioned pulse and the frequency that has been stored in the pulse in the above-mentioned microcomputer.More detailed says, why the reason that will compare judgement to the frequency of above-mentioned pulse and the frequency that is stored in the pulse in the above-mentioned microcomputer be: the flow of feedwater is to be measured by the rotation number of above-mentioned impeller 400.
In addition, surpass the frequency that has been stored in the pulse P in the microcomputer, then be judged as excessive feedwater, thereby the draining pump 800 that is connected in above-mentioned microcomputer 700 is driven if be sent to the frequency of the pulse P of above-mentioned microcomputer 700.Therefore, the washings of glut will be discharged to the outside by above-mentioned draining pump 800, so can make sink inner sustain ordinary water level.
As shown in Figure 7, the excessive feedwater according to dish-washing machine of the present invention prevents that method from comprising following several stages and constituting: washings flow into stage ST110; The effect of the washings by above-mentioned inflow makes the stage ST120 of above-mentioned impeller rotation; Be used for detecting the stage ST130 of the Hall element output pulse of the magnet of being close to above-mentioned impeller; In microcomputer, relatively judge the stage ST140 of the pulse of the pulse of above-mentioned output and storage; After the pulse output that stores, judge whether that pulse continues the stage ST160 of output.
Detailed says, in above-mentioned microcomputer 700, after the frequency of the pulse of the frequency of the pulse that stores in the above-mentioned microcomputer 700 and output compared judgement,, then enter the stage ST150 that sends the interrupt signal that feeds water if the frequency of the pulse of output is identical with the frequency of the pulse of regulation.On the contrary, if the frequency of the pulse of output less than the frequency of the pulse of regulation, is then proceeded feedwater.Here, the stage ST150 that sends the feedwater interrupt signal can work out and is following program: send the feedwater interrupt signal from above-mentioned microcomputer, close feed-water valve, thereby washings can not be flowed into by feed-water valve again.
In addition, have no progeny in feedwater, above-mentioned microcomputer also will continue to detect pulse and whether continue output, if no longer export pulse, then enter washing process ST180 normally.But, if even from above-mentioned microcomputer 700, exported the feedwater interrupt signal, the continuation output of pulse being arranged still, above-mentioned microcomputer 700 will be judged as the feed-water valve fault, thereby enter the forced drainage stage ST170 that sends the draining pump drive signal.Moreover, above-mentioned microcomputer 700 can also send alarm signals such as the alarm sound that can make user's perception or warning message when sending above-mentioned draining pump drive signal.
Detailed says, after the instruction driving of above-mentioned draining pump 800 by above-mentioned microcomputer 700, glut can be discharged to the outside to the washings in the sink, thereby can make sink inside keep ordinary water level all the time.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
The effect of invention
The excessive feedwater of dish-washing machine of the present invention prevents that structure and method thereof have following effect: because can Prevent the phenomenon of the excessive feedwater of washings of sink inside, it is hereby ensured the security of dish-washing machine.
In addition, when because feed-water valve damages, and after reaching ordinary water level, still have washings to supply with In the situation, the washings of glut can be forced to discharge, therefore can avoid excessive feedwater phenomenon Take place.
Claims (6)
1. the excessive feedwater of a dish-washing machine prevents structure, it is characterized in that:
This structure comprises following components:
Be used to detect the float meter of the flow of the washings that flow into sink inside;
One side, outside of being close to above-mentioned float meter is used to export the Hall element of pulse of the rotation number of above-mentioned float meter;
Be connected with above-mentioned Hall element, be used to detect the microcomputer of the frequency of above-mentioned pulse;
Be connected with above-mentioned microcomputer, according to the draining pump of the draining signal driving of sending in the above-mentioned microcomputer.
2. the excessive feedwater of dish-washing machine according to claim 1 prevents structure, it is characterized in that:
If the frequency of the pulse under the ordinary water level of the frequency of the pulse of exporting from above-mentioned Hall element and above-mentioned microcomputer internal reservoir is identical, above-mentioned microcomputer will send the feedwater interrupt signal.
3. the excessive feedwater of dish-washing machine according to claim 1 prevents structure, it is characterized in that:
The frequency of the pulse of exporting in above-mentioned Hall element is greater than the moment of the frequency of the pulse under the ordinary water level of above-mentioned microcomputer internal reservoir, and above-mentioned microcomputer will send the draining pump drive signal.
4. the excessive feedwater of a dish-washing machine prevents method, comprises following several stages:
Washings flow into the feedwater stage of sink inside;
Detect the stage of feedwater flow according to float meter;
Judge the excessive feedwater whether stage of above-mentioned washings according to microcomputer;
Under the situation of excessive feedwater, the draining pump that is connected with above-mentioned microcomputer drives, thus the stage of forced drainage;
It is characterized in that:
The stage of above-mentioned detection feedwater flow includes: the stage of the impeller of above-mentioned float meter rotation, and the Hall element of a side of being close to the outside of above-mentioned float meter is exported stage of pulse of the rotation number of above-mentioned impeller.
5. the excessive feedwater of dish-washing machine according to claim 4 prevents method, it is characterized in that:
The excessive feedwater of the above-mentioned judgement whether stage includes: if the pulse frequency of Hall element output is less than the frequency of regulation, then continue feedwater, and in the identical moment of frequency of the pulse that stores from the frequency of the pulse of above-mentioned Hall element output and above-mentioned microcomputer, above-mentioned microcomputer sends the stage of feedwater interrupt signal;
After above-mentioned feedwater interrupt signal is sent, also continue under the situation of output pulse from above-mentioned Hall element, above-mentioned microcomputer sends the stage of forced drainage signal and alarm signal.
6. the excessive feedwater of dish-washing machine according to claim 5 prevents method, it is characterized in that:
After above-mentioned feedwater interrupt signal is sent, in above-mentioned Hall element, no longer export under the situation of pulse, then enter the stage of normal washing process.
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| CN100413455C true CN100413455C (en) | 2008-08-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE533765C2 (en) * | 2009-05-05 | 2010-12-28 | Tetra Laval Holdings & Finance | Method of controlling a process |
| DE102009027690A1 (en) | 2009-07-14 | 2011-01-20 | BSH Bosch und Siemens Hausgeräte GmbH | Water-conducting household appliance |
| DE102010027756A1 (en) | 2010-04-14 | 2011-10-20 | BSH Bosch und Siemens Hausgeräte GmbH | Dishwasher with fault detection |
| CN102508023B (en) * | 2011-11-14 | 2016-12-07 | 美的集团股份有限公司 | The signal deteching circuit of shunt valve of dishwasher and frequency detecting method |
| CN104615162B (en) * | 2015-02-03 | 2017-07-21 | 安康学院 | A kind of water level control warning system |
| CN105266735B (en) * | 2015-10-09 | 2018-05-01 | 佛山市顺德区美的洗涤电器制造有限公司 | Dish-washing machine and its control method |
| CN107374537B (en) * | 2017-07-31 | 2021-04-20 | 佛山市顺德区美的洗涤电器制造有限公司 | Control method of dish washing machine and dish washing machine |
| CN109730603B (en) * | 2019-01-16 | 2020-11-06 | 佛山市云米电器科技有限公司 | Dish washing machine and control method thereof |
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