CN101967746A - Drum type washing and drying machine and temperature detection method - Google Patents
Drum type washing and drying machine and temperature detection method Download PDFInfo
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- CN101967746A CN101967746A CN2009100896460A CN200910089646A CN101967746A CN 101967746 A CN101967746 A CN 101967746A CN 2009100896460 A CN2009100896460 A CN 2009100896460A CN 200910089646 A CN200910089646 A CN 200910089646A CN 101967746 A CN101967746 A CN 101967746A
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Abstract
The embodiment of the invention relates to a drum type washing and drying machine and a temperature detection method, and the method comprises the following steps: using a temperature sensor at an air outlet to send the detected temperature of the air outlet which is communicated with an outer cylinder of a drying device to a main control panel; and using the main control panel to judge whether washed matters are dried or not according to the temperature of the air outlet, if so, controlling the drying device to stop drying. In the embodiment, when the temperature of the air outlet reaches a temperature inflection point or the highest set temperature, the main control panel can control the drying device to stop drying. The drum type washing and drying machine can realize the immediate stop after clothes are dry, thereby saving electrical energy and improving the energy-saving effect.
Description
Technical field
The present invention relates to rolling washing dryer, particularly rolling washing dryer and temperature checking method.
Background technology
Along with the continuous enhancing of environmental consciousness, people have higher requirement to the energy-saving effect of rolling washing dryer.Existing tumbling-box washing machine couples together by the top and bottom of oven dry air channel with urceolus, when oven dry fan in being arranged on this oven dry air channel and oven dry heating tube energising operation, the oven dry heating tube heats the air in the oven dry air channel, and by the oven dry fan high temperature air is transported to urceolus inside, make the inner moist washings of urceolus contact, to realize oven dry to washings with high temperature air.
But existing tumbling-box washing machine is selected corresponding drying time according to the weight of washings, cause existing tumbling-box washing machine low easily to the accuracy of judging the washings degree of drying, it is long to make drying time be provided with, expend a large amount of electric energy and water, reduced the energy-saving effect of rolling washing dryer.
Summary of the invention
The embodiment of the invention provides a kind of rolling washing dryer and temperature checking method, in order to realize clothes drying-stopping, saves electric energy, improves energy-saving effect.
The embodiment of the invention provides a kind of rolling washing dryer, comprising: be arranged on the urceolus of casing inside, the drying unit with described urceolus is communicated with also comprises:
The air outlet temperature sensor is arranged on the air outlet place that described drying unit is communicated with described urceolus, is used to detect the temperature of described air outlet, and the temperature of described air outlet is sent to master control borad;
Described master control borad is electrically connected with described air outlet temperature sensor, and described master control borad judges whether the temperature of described air outlet reaches temperature flex point or the highest design temperature when oven dry, if then control described drying unit and stop oven dry.
The embodiment of the invention also provides a kind of temperature checking method according to above-mentioned rolling washing dryer, comprising:
The air outlet temperature sensor sends to master control borad with the temperature of the air outlet that detected drying unit is communicated with urceolus;
Described master control borad judges according to the temperature of described air outlet whether washings dries, if then described master control borad is controlled described drying unit and stopped oven dry.
As shown from the above technical solution, reach the temperature flex point or during high design temperature, master control borad control drying unit stops oven dry when the temperature of air outlet in the embodiment of the invention.Realize clothes drying-stopping, saved electric energy, improved energy-saving effect.
Description of drawings
The structural representation of the rolling washing dryer that Fig. 1 a provides for the embodiment of the invention one;
Fig. 1 b carries the bake out temperature curve map for the rolling washing dryer band that the embodiment of the invention provides;
The unloaded bake out temperature curve map of rolling washing dryer that Fig. 1 c provides for the embodiment of the invention;
The structural representation of the rolling washing dryer that Fig. 2 provides for the embodiment of the invention two;
The schematic flow sheet of the temperature checking method that Fig. 3 provides for the embodiment of the invention three.
Among the figure:
The 1-urceolus; The 11-air inlet; The 12-air outlet;
The 13-water discharge outlet; The 2-cylinder; The 3-drying unit;
31-is dried the air channel; 32-is dried heating tube; 33-is dried fan;
4-air outlet temperature sensor; The 5-master control borad; The 6-condenser;
The 61-spray nozzle; The 7-drainage arrangement; The 71-flexible pipe;
The 72-draining pump; The 73-drainpipe; 8-intake air temperature sensor.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described in further detail.
The structural representation of the rolling washing dryer that Fig. 1 a provides for the embodiment of the invention one.As shown in Figure 1a, the rolling washing dryer of present embodiment comprises: be arranged at the urceolus 1 in the casing, and the cylinder 2 that is rotatably installed in urceolus 1 inside.The top of this urceolus 1 is provided with air inlet 11, and the side-lower of this urceolus 2 is provided with air outlet 12.The drying unit 3 that is arranged at urceolus 1 one sides is communicated with this urceolus 1 by the air inlet 11 and the air outlet 12 of this urceolus 1 outside.Air outlet 12 places at urceolus 1 side-lower are provided with an air outlet temperature sensor 4, and this air outlet temperature sensor 4 is electrically connected with master control borad 5.When this air outlet temperature sensor 4 detects the temperature of air outlet 12, detected temperature is sent to master control borad 5.
Further, drying unit 3 in the rolling washing dryer of present embodiment can comprise: the oven dry air channel 31 that is communicated with urceolus 1, particularly, one end in this oven dry air channel 31 is connected with the air inlet 11 on urceolus 1 top, and the other end in this oven dry air channel 31 is connected with the air outlet 12 of urceolus 1 side-lower.The top in this oven dry air channel 31 is provided with oven dry heating tube 32, and this oven dry heating tube 32 is used for the air in the oven dry air channel 31 is heated.Side at oven dry heating tube 32, be provided with oven dry fan 33, this oven dry fan 33 begins rotation when oven dry, make to dry and produce circulating airs in the air channel 31, to be input to the urceolus 1 from air inlet 11 through the air after 32 heating of oven dry heating tube, after the washings of circulating air in urceolus 1 of process heating fully contacts, from air outlet 12 outputs, and once more by 32 heating of oven dry heating tube.
For the temperature of Control Circulation air, the rolling washing dryer of present embodiment can also comprise condenser 6, and this condenser 6 is arranged on the top in oven dry air channel 31, and these condenser 6 upper ends are provided with spray nozzle 61.When the temperature that detects air outlet 12 when master control borad 5 reached first design temperature, the spray nozzle 61 of master control borad 5 these condenser 6 upper ends of control was to oven dry air channel 31 inwalls spray condensed water, with the circulating air of cooling through heating.Need to prove, first design temperature is the threshold temperature of condenser 6 work, can set in advance according to actual conditions, and the scope of this first design temperature can be between 25 ℃-40 ℃, first design temperature in the present embodiment is that example describes with 30 ℃, but is not limited to 30 ℃.Further, because the spray nozzle 61 in the rolling washing dryer of the present invention is with 0.3 liter/minute flow spray condensed water, condensed water flow of inlet water with existing clothes washer-dryer: the 0.5-0.7 liter/minute flow compare, rolling washing dryer of the present invention can be saved a large amount of oven dry waters.
Bottom at the rolling washing dryer of present embodiment also is provided with drainage arrangement 7, and this drainage arrangement 7 is made up of flexible pipe 71, draining pump 72 and drainpipe 73.Wherein, an end of draining pump 72 is connected with the water discharge outlet 13 that is arranged on urceolus 1 bottom by flexible pipe 71, and the other end of draining pump 72 is connected with drainpipe 73.Need to prove, drainage arrangement 7 in the present embodiment has last drain function, for the tumbling-box washing machine that does not possess last drain function in the prior art, only need the drainage arrangement in the present embodiment 7 is installed in existing drum type washing motor spindle, can realize draining.
After laundry processes finished, the rolling washing dryer of present embodiment can enter drying course to washings according to predefined program.In whole drying course, the motor in the rolling washing dryer of present embodiment remains 45 rev/mins rotating speed, and the commentaries on classics of 30s ON/10s OFF stops ratio, drives cylinder 2 with respect to urceolus 1 rotation.
When drying course begins, at first oven dry heating tube 32 and oven dry fan 33 are powered on, air in 32 pairs of oven dry of oven dry heating tube after powering on air channel 31 heats, simultaneously, oven dry fan 33 after powering on begins rotation, continue air-supply, will be input to urceolus 1 inside from air inlet 11, make urceolus 1 temperature inside rise rapidly through the air after these oven dry heating tube 32 heating.At this moment, air outlet temperature sensor 4 begins to detect the temperature at 12 places, air port, and in real time detected temperature is sent to master control borad 5.When the temperature that detects air outlet 12 places when master control borad 5 was 30 ℃ of first design temperatures, the spray nozzle 61 of these master control borad 5 control condensers 6 upper ends was with 0.3 liter/minute the flow inwall spray condensed water to oven dry air channel 31.Because from the circulating air of air outlet 12 outputs, the washings that holds with cylinder 2 fully contacts, therefore, the circulating air of air outlet 12 outputs has carried a large amount of moistures.When the circulating air process of air outlet 12 outputs is dried 31 bottoms, air channel, can fully contact with the condensed water of spray nozzle 61 sprays, not only reached the purpose that cools, and made a large amount of moistures that carry in the circulating air discharge from drainpipe 73 with condensed water.Therebetween, draining pump 72 is discharged the condensed water of urceolus 1 bottom outflow according to the sequential of 20s OFF/10s ON to drainpipe 73.Afterwards, oven dry heating tube 32, oven dry fan 33, condenser 6 and draining pump 72 continuous firings, make that the washings that holds in the cylinder 2 is dry gradually, and air outlet temperature sensor 4 detects the temperature at 12 places, air port always, and detected temperature value sent to master control borad 5, whether the temperature that the temperature value that master control borad 5 sends according to air outlet temperature sensor 4 is judged 12 places, air port reaches temperature flex point or the highest design temperature.When the temperature of determining 12 places, air port when master control borad 5 reaches the temperature flex point, quit work after then master control borad 5 control oven dry heating tubes 32 worked on 10 minutes; When the temperature of determining 12 places, air port when master control borad 5 reached the highest design temperature, then control oven dry heating tube 32 quit work immediately.
Need to prove that Fig. 1 b carries the bake out temperature curve map for the rolling washing dryer band that the embodiment of the invention provides.Shown in Fig. 1 b, by a large amount of experimental verifications: the temperature at air outlet place is relevant with the temperature and the energy that water evaporates absorbed in the washings of the circulating air of drying unit input.Under the certain condition of the temperature of the circulating air that drying unit is imported, the incipient stage of drying course, the moisture of washings is big, the energy that water evaporates absorbed is also bigger, this part heat energy is taken away by water vapour, continuity along with drying time, moisture in the washings reduces gradually, correspondingly also reduce gradually by the energy that water evaporates absorbed, thereby the temperature of air outlet is risen rapidly by the minimum temperature in when beginning, along with steam scatters and disappears, evaporation capacity reduces gradually and tends to balance, and enters equilibrium stage.In equilibrium stage, because the moisture content less in the washings, evaporation slowly, and is also corresponding less by the heat that the water vapour condensation is taken away, but the evaporation capacity of each time point is basic identical, and the temperature of air outlet also reaches balance on higher temperature; When the moisture of washings in the cylinder is fewer and feweri, water evaporation quantity in the clothing goes to zero, the high temperature circulation air of drying unit input rises the temperature of the washings in the cylinder, at this moment, the temperature at air outlet place rises once more, the temperature spot that is entered rising by balance is called the temperature flex point, and the interior clothing of tube this moment is dried.
The variation of the variation that this moment, temperature rose during obviously greater than the oven dry balance therefore can judge whether the washings in the cylinder dries by the variations in temperature that master control borad detect the place, air port, thereby the duty of control drying unit adjusted drying time; After temperature that master control borad detects the air outlet place reaches certain rate of change, stop the oven dry heating, carry out cooling procedure, the temperature at air outlet place descends rapidly, after the temperature at air outlet place drops to certain temperature, can stop cooling, promptly finish whole drying course.Particularly, master control borad is according to the oven dry degree of washings, when adjusting the time of drying course, if rolling washing dryer of the present invention is dried washings in advance, then master control borad shortens the time of drying course, and controls drying unit and finish the oven dry heating in advance, reaches best drying effect, both prevented the damage that washings causes because of the transition oven dry, more existing again tumbling-box washing machine has reduced the loss of electric energy; Otherwise, if after arriving predefined drying time, rolling washing dryer of the present invention is not still dried washings, then master control borad increases the time of drying course, and the control drying unit continues to carry out drying course, dried until washings, thereby avoided oven dry to finish the still not oven dry of back washings.For example: in drying course, if the predefined drying time of no show, washings is dried, and then program time directly jumps to " 0:10 " from the current time and also directly jumps to cooling procedure; If arrive predefined drying time, washings is not oven dry still, and then program time rests on " 0:10 ", after the washings oven dry, just can jump to cooling procedure.
In addition, by a large amount of experimental verifications, when the temperature at air outlet place between 55 ℃-70 ℃, washings is drying, in the present embodiment according to actual conditions, in advance the highest design temperature is set at 60 ℃, but is not limited to 60 ℃.When the temperature that has guaranteed the air outlet place reaches 60 ℃ of the highest design temperatures, stop oven dry immediately.
Further, the unloaded bake out temperature curve map of rolling washing dryer that provides for the embodiment of the invention of Fig. 1 c.Shown in Fig. 1 c, when the rolling washing dryer of present embodiment is unloaded when carrying out drying course, the temperature in preceding 5 minutes can rise rapidly 15 ℃.Therefore, when the temperature at the air outlet place in the present embodiment is lower than 30 ℃ of first design temperatures, if detecting, master control borad receives temperature value that the air outlet temperature sensor sends in the 4th time interval when differing the 4th temperature difference, then master control borad is thought and is not held washings in the cylinder, finish drying course immediately, directly jump to cooling procedure.Wherein, the 4th time interval in the present embodiment was that example describes with 5 minutes, but was not limited to 5 minutes.The 4th temperature difference is that example describes with 15 ℃, but is not limited to 15 ℃.
The temperature value that sends according to the air outlet temperature sensor when master control borad in the present embodiment, when the temperature of determining air port place reaches temperature flex point or the highest design temperature, the control drying unit stops oven dry, thereby realization clothes drying-stopping, save electric energy, improved the energy-saving effect of rolling washing dryer.
The structural representation of the rolling washing dryer that Fig. 2 provides for the embodiment of the invention two.Present embodiment further is provided with intake air temperature sensor 8 at air inlet 11 places on urceolus 1 top based on the foregoing description one, when this intake air temperature sensor 8 detects the temperature at air inlet 11 places, detected temperature is sent to master control borad 5.When master control borad 5 receives the temperature at air inlet 11 places, can carry out following two operations according to the temperature at these air inlet 11 places, in drying course, lack the device that detects oven dry fan 33 stalls to solve existing tumbling-box washing machine respectively, the technical problem that causes drying unit 3 to damage easily, and existing tumbling-box washing machine is after drying course finishes, lack temperature control mechanism, make the technical problem of being scalded easily when the user opens gate.
First operation, whether master control borad 5 judges the temperature difference of air inlet 11 in the 5th time interval more than or equal to the 5th temperature difference, if then master control borad 5 determines that oven dry fan 33 breaks down, the oven dry of mode call user's attention to report to the police, and control immediately heating tube 32 quits work immediately; If not, master control borad 5 control drying units 3 continue to carry out drying course.
Need to prove, when drying fan 33 just often, this oven dry fan 33 blows air to oven dry heating tube 32 places and blows rapidly near intake air temperature sensor 8 through heating, and at this moment, this intake air temperature sensor 8 rises the temperature of detected air inlet 11 very fast.In case oven dry fan 33 stalls, air in the oven dry air channel 31 flows very slow, need temperature conduction could be arrived air inlet 11 places through the diffusion of long period through the air after 32 heating of oven dry heating tube, so intake air temperature sensor 8 detected temperature rise slower.When this shows master control borad 5 temperature difference by determining air inlet 11 in the 5th time interval more than or equal to the 5th temperature difference, can judge oven dry fan 33 stalls, and immediately with the type of alarm call user's attention, make the rolling washing dryer of present embodiment can in time detect the problem of oven dry fan 33 stalls, prevented the technical problem that drying unit 3 damages behind oven dry fan 33 stalls.
Wherein, the 5th time interval was a pre-set time interval, was used to limit the time that air inlet 11 place's temperature rise of detecting.The 5th temperature difference is predefined temperature gap, is used to limit air inlet 11 and is in rate temperature change in the 5th time interval.
Second operation, master control borad 5 judge whether the temperature at air inlet 11 places is lower than the release temperature, if then master control borad 5 control gates are opened; If not, then the spray nozzle 61 of master control borad 5 control condensers 6 upper ends continues to spray condensed water to the inwall in oven dry air channel 31.
Need to prove, in the foregoing description one, the temperature of determining 12 places, air port when master control borad 5 reaches temperature flex point or the highest design temperature, after oven dry heating tube 32 quits work, oven dry fan 33, condenser 6 and drainage system 7 still keep duty, continue to carry out cooling process.The rolling washing dryer of present embodiment can very fast temperature with circulating air be cooled to the release temperature in 10 minutes, can satisfy the demand that the user in time opens gate.
When the temperature that detects air inlet 11 places when intake air temperature sensor 8 was lower than the release temperature, master control borad 5 control oven dry fans 33, condenser 6 and drainage system 7 quit work, and the control gate is opened.
Need to prove, when opening gate, scalded, set a release temperature in the present embodiment, when reaching this release temperature, just allow gate to open in order to prevent the user.In order to guarantee user's safety; release temperature in the present embodiment is set at 40 ℃; in actual applications, the release temperature can also be set and be lower than 40 ℃, be higher than 40 ℃ or being lower than 40 ℃ should not exceed the claimed scope of the present invention no matter the release temperature is set.
When intake air temperature sensor 8 detects intake air temperature and is lower than 40 ℃ of release temperature, open in the present embodiment, prevented to be scalded when the user from opening gate by master control borad 5 control gates.And when intake air temperature sensor 8 in the 5th time interval detects the temperature difference of air inlet 11 more than or equal to the 5th temperature difference, mode call user's attention to report to the police immediately, and control oven dry heating tube 32 quits work immediately, damage drying unit 3 when having prevented oven dry fan 33 stalls, improved the security performance of rolling washing dryer of the present invention.
Further, in the present embodiment after rolling washing dryer enters cooling procedure, master control borad is according to the temperature of air inlet, can adjust the time of cooling procedure, concrete adjustment process can be referring to the oven dry degree of master control borad in the foregoing description one according to washings, adjust the process of the time of drying course, repeat no more herein.For example: in cooling procedure,, when the temperature that master control borad detects air inlet is lower than 40 ℃ of release temperature, then allow gate to open if when arriving cooling concluding time " 0:01 "; If the no show cooling concluding time " 0:01 ", and master control borad is when detecting the temperature of air inlet and still being higher than 40 ℃ of release temperature, and then " 0:01 " do not successively decrease the current time, continues to carry out cooling procedure, temperature until air inlet is lower than 40 ℃ of release temperature, just allows gate to open.
The schematic flow sheet of the temperature checking method that Fig. 3 provides for the embodiment of the invention three.The temperature checking method that present embodiment provides is the flow process of the performed temperature checking method of the foregoing description one and embodiment two intermediate roll formula clothes washer-dryers.As shown in Figure 3, present embodiment can may further comprise the steps:
Need to prove that the temperature checking method of present embodiment can also can be directly to detect the moist temperature of washings in drying course after rolling washing dryer is finished washing flow.Be that example describes to finish after the washing flow in the present embodiment, but be not limited to finish after the washing flow.
Step 301, drying unit power on, and the circulating air of urceolus inside is heated.
After drying unit powered on, the oven dry heating tube heated the air in the oven dry air channel, dried fan simultaneously and began rotation, continued air-supply, will be input to urceolus inside through the air after the heating of oven dry heating tube, made the urceolus temperature inside rise rapidly.
Need to prove that in whole drying course, the motor in the rolling washing dryer of present embodiment remains 45 rev/mins rotating speed, and the commentaries on classics of 30s ON/10s OFF stops ratio, drive cylinder with respect to urceolus 1 rotation.
Whether the temperature that step 302, master control borad are judged the air port reaches first design temperature, and if not, then execution in step 303; If then execution in step 304;
In the present embodiment, first design temperature is that example describes with 30 ℃, but is not limited to 30 ℃.
The air outlet temperature sensor detects the temperature in air port, and temperature value is sent to master control borad.The temperature value that master control borad sends according to the air outlet temperature sensor, whether the temperature of judging the air port reaches 30 ℃ of first design temperatures, and when the temperature of air outlet was lower than 30 ℃, then execution in step 303; When the temperature of air outlet reached 30 ℃, then execution in step 304.
Need to prove that air outlet temperature sensor per minute is gathered a temperature value in the present embodiment, this temperature value is the mean value of detected all temperature values of this air outlet temperature sensor in 1 minute.
Step 303, master control borad judge that the temperature difference of air outlet in the 4th time interval whether greater than the 4th temperature difference, if not, then returns execution in step 302; If then execution in step 307.
In the present embodiment, referring to the description of in the foregoing description one rolling washing dryer zero load of the present invention being carried out drying course, as can be known, when the unloaded execution of rolling washing dryer of the present invention drying course, temperature in preceding 5 minutes can rise rapidly 15 ℃, therefore, the 4th time interval in the present embodiment is 5 minutes, and the 4th temperature difference is 15 ℃.
In this step, when the temperature of determining the air port when master control borad is lower than 30 ℃, judge that then drying course began in time interval of 5 minutes, whether the temperature difference of air outlet reaches 15 ℃, if do not reach, then returns execution in step 302; If reach, then execution in step 307.
Step 304, master control borad control condenser are to oven dry air channel inwall spray condensed water.
When the temperature of air outlet reached 30 ℃, then the spray nozzle of master control borad control upper end of condenser was to the inwall spray condensed water in oven dry air channel.At this moment, the circulating air of air outlet output, process fully contacts with washings, carried a large amount of moistures, when the circulating air process of air outlet output is dried the bottom in air channel, fully contact with the condensed water of spray nozzle spray, not only reached the purpose that cools, and make a large amount of moistures that carry in the circulating air discharge from drainpipe with condensed water.
Need to prove that in order to guarantee to realize the purpose of water and electric saving under the prerequisite that the circulating air of drying the bottom, air channel is cooled off, the flow set of spray nozzle spray condensed water is 0.3 liter/minute in the present embodiment, but is not limited to 0.3 liter/minute.The work schedule of draining pump is set at 20s OFF/10sON in the present embodiment, but is not limited to 20s OFF/10s ON.
Step 305, master control borad judge according to the temperature of air outlet whether washings dries, and if not, then return execution in step 304; If then execution in step 306.
Wherein, master control borad judges that the mode whether washings dries can comprise following two kinds:
First kind of mode: temperature flex point diagnostic method.
Carry the description of oven dry referring to a pair of rolling washing dryer band of the present invention of the foregoing description, as can be known, after the temperature of air outlet had experienced the stage of " rising-balance ", the temperature spot that carries out the transition to rising by balance was called the temperature flex point once more.
In the present embodiment, weight according to washings, can set the zero-time that master control borad judges whether to reach the temperature flex point, the air outlet temperature sensor begins to detect the temperature in air port when reaching this zero-time, and master control borad brings into use temperature flex point diagnostic method to judge whether to reach the temperature flex point.Weight with washings in the present embodiment is divided into two grades, that is: semi-load and maximum load, and correspondingly, when rolling washing dryer of the present invention was worked semi-load, the zero-time that corresponding master control borad is judged was the 40th minute after drying course begins; When rolling washing dryer maximum load of the present invention was worked, the zero-time that corresponding master control borad is judged was the 60th minute after drying course begins.
When rolling washing dryer of the present invention was worked semi-load, master control borad judged whether to arrive the temperature flex point and can may further comprise the steps:
After step S301, the arrival zero-time, the air outlet temperature sensor begins to gather the temperature of air outlet, and the temperature value of gathering is sent to master control borad.
Wherein, the air outlet temperature sensor sends to master control borad with the temperature of air outlet in real time, and this master control borad per minute calculates the average temperature value at an air outlet place, and this average temperature value is the mean value of all temperature values of collecting in 1 minute.
Whether step S302, master control borad judge the temperature difference of air outlet in the very first time is at interval more than or equal to first temperature difference, if, execution in step S303 then; If not, then zero-time is postponed 1 minute, repeat this step up to judged result for being.
Wherein, the very first time in the present embodiment was that example describes with 15 minutes at interval, but was not limited to 15 minutes.First temperature difference is that example describes with 3 ℃, but is not limited to 3 ℃.
When arriving zero-time after 40 minutes, the master control borad per minute calculates the average temperature value at an air outlet place, the temperature value that calculates in the time of the 40th minute is set at initial value, then arrived the 55th minute that dries after beginning in 15 minutes at interval through the very first time, master control borad uses the 55th minute corresponding temperature value to deduct the 40th minute corresponding initial value, and whether the temperature difference of judging both be greater than or equal to 3 ℃ of first temperature differences, if, execution in step S303 then; If not, then zero-time is postponed 1 minute, master control borad uses the 56th minute corresponding temperature value to deduct the 41st minute corresponding temperature value, and judges whether both temperature differences are greater than or equal to 3 ℃ of first temperature differences, by that analogy, up to judged result for being.
Whether step S303, master control borad judge the temperature difference of air outlet in the 3rd time interval more than or equal to the 3rd temperature difference, if, then washings oven dry; If not, then zero-time is postponed 1 minute, and return execution in step S302.
Wherein, the 3rd time interval in the present embodiment was that example describes with 10 minutes, but was not limited to 10 minutes.The 3rd temperature difference in the present embodiment is that example describes with 2 ℃, but is not limited to 2 ℃.Need to prove that 10 minutes the 3rd time intervals were the very first time back 10 minutes in 15 minutes at interval.
When the 55th minute that dries after beginning, master control borad determined that the temperature difference of air outlet in 15 minutes is more than or equal to 3 ℃.Then master control borad uses the 55th minute corresponding temperature value to deduct the 45th minute corresponding temperature value, and judges whether both temperature differences are greater than or equal to 2 ℃ of the 3rd temperature differences, if, then washings oven dry; If not, then zero-time is postponed 1 minute, and return execution in step S302.
Need to prove, when rolling washing dryer of the present invention is worked semi-load, master control borad determines that at first the temperature of air outlet in 15 minutes has risen at least 3 ℃, determine then in back 10 minutes in 15 minutes, the temperature of air outlet has risen at least 2 ℃, then this moment, master control borad can determine to reach the temperature flex point, and washings is dried.
When rolling washing dryer maximum load of the present invention was worked, master control borad judged whether to arrive the temperature flex point and can may further comprise the steps:
After step S301 ', the arrival zero-time, the air outlet temperature sensor begins to gather the temperature of air outlet, and the temperature value of gathering is sent to master control borad.
Wherein, the air outlet temperature sensor sends to master control borad with the temperature of air outlet in real time, and this master control borad per minute calculates the average temperature value at an air outlet place, and this average temperature value is the mean value of all temperature values of collecting in 1 minute.
Whether step S302 ', master control borad judge the temperature difference of air outlet in second time interval more than or equal to second temperature difference, if, execution in step S303 ' then; If not, then zero-time is postponed 1 minute, repeat this step and know that the judgement structure is for being.
Wherein, second time interval in the present embodiment was that example describes with 20 minutes, but was not limited to 20 minutes.Second temperature difference is that example describes with 4 ℃, but is not limited to 4 ℃.
When arriving zero-time after 60 minutes, the master control borad per minute calculates the average temperature value at an air outlet place, the temperature value that calculates in the time of the 60th minute is set at initial value, then arrived the 80th minute that dries after beginning through 20 minutes second time intervals, master control borad uses the 80th minute corresponding temperature value to deduct the 60th minute corresponding initial value, and whether the temperature difference of judging both be greater than or equal to 4 ℃ of second temperature differences, if, execution in step S303 ' then; If not, then zero-time is postponed 1 minute, repeat this step up to judged result for being.
Whether step S303 ', master control borad judge the temperature difference of air outlet in the 3rd time interval more than or equal to the 3rd temperature difference, if, then washings oven dry; If not, then zero-time is postponed 1 minute, and return execution in step S302 '.
Wherein, the 3rd time interval and the 3rd temperature difference in the present embodiment are described in the above-described embodiments, repeat no more herein.Need to prove that 10 minutes the 3rd time intervals were back 10 minutes in second 20 minutes time intervals.
When the 80th minute that dries after beginning, master control borad determined that the temperature difference of air outlet in 20 minutes is more than or equal to 4 ℃.Then master control borad uses the 80th minute corresponding temperature value to deduct the 70th minute corresponding temperature value, and judges whether both temperature differences are greater than or equal to the 3rd temperature difference, if, then washings oven dry; If not, then zero-time is postponed 1 minute, and return execution in step S302.
Need to prove, when rolling washing dryer maximum load of the present invention is worked, master control borad determines that at first the temperature at punishment mouthful place in 20 minutes has risen at least 4 ℃, determine then in back 10 minutes in 20 minutes, the temperature of air outlet has risen at least 2 ℃, then this moment, master control borad can determine to reach the temperature flex point, and washings is dried.
The second way: the highest design temperature diagnostic method.
In addition, by a large amount of experimental verifications, when the temperature at air outlet 12 places between 55 ℃-70 ℃, washings is drying, in the present embodiment according to actual conditions, in advance the highest design temperature is set at 60 ℃, but is not limited to 60 ℃.
In whole drying course, the temperature of the air outlet that master control borad receives determines that then washings is dried during for 60 ℃ of the highest design temperatures.
Step 306, master control borad control drying unit stop oven dry.
Need to prove, when master control borad adopts temperature flex point diagnostic method to determine washings by oven dry, then master control borad control drying unit continues to finish until lasting drying time to the circulating air of air inlet input through heating, then controls drying unit and stops oven dry.Wherein, the lasting drying time in the present embodiment was that example describes with 10 minutes, but was not limited to 10 minutes.That is: when master control borad adopted temperature flex point diagnostic method to determine washings by oven dry, drying unit continued to 10 minutes the circulating air through heating of air inlet input, to guarantee that washings is dried fully.
If when the highest design temperature diagnostic method of master control borad employing was determined washings by oven dry, then master control borad control drying unit stopped oven dry immediately, prevent that high temperature from constituting damage to washings.
Further, when master control borad control drying unit stopped to dry, the oven dry heating tube that advances to control in the drying unit stopped heating, and oven dry fan 33, condenser 6 and drainage system 7 still keep duty, continue to carry out cooling process.
Step 307, master control borad control condenser continue the spray condensed water.
Need to prove that the temperature of air outlet when the temperature in 5 minutes rises rapidly 15 ℃ the time, then directly jumps to this step below 30 ℃ the time.
Step 308, when the intake air temperature sensor when the temperature of air inlet is lower than the release temperature, master control borad control control condenser stops to spray condensed water, and the control gate is opened.
Wherein, the release temperature of present embodiment can be referring to the description in the foregoing description two, and the release temperature in this enforcement is that example describes with 40 ℃ still, but is not limited to 40 ℃.
When the temperature of air inlet was lower than 40 ℃, the control gate was opened and can be prevented that the user from being scalded, and improves the security of rolling washing dryer of the present invention.
Further, after the master control borad of present embodiment receives the temperature value of intake air temperature sensor transmission, this master control borad judges that whether the temperature difference of air inlet in the 5th time interval is more than or equal to the 5th temperature difference, if, then master control borad determines that the oven dry fan breaks down, the oven dry of mode call user's attention to report to the police, and control immediately heating tube quits work immediately; If not, master control borad control drying unit continues to carry out drying course.Concrete deterministic process is described in detail in the foregoing description two, repeats no more herein.When the temperature difference of master control borad by determining air inlet in the 5th time interval is more than or equal to the 5th temperature difference in this step, can judge the oven dry stalled fan, and immediately with the type of alarm call user's attention, make the rolling washing dryer of present embodiment can in time detect the problem of oven dry stalled fan, prevented to dry the technical problems of adorning 3 damages behind the oven dry stalled fan.
The temperature of the air outlet that is communicated with urceolus according to drying unit in the present embodiment judges whether the washings of urceolus inside dries, the heating action of corresponding control drying unit, adjust drying time flexibly, thereby realization clothes drying-stopping, save electric energy and water, improved the energy-saving effect of rolling washing dryer.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (13)
1. rolling washing dryer, comprising: be arranged on the urceolus of casing inside, the drying unit with described urceolus is communicated with is characterized in that, described rolling washing dryer also comprises:
The air outlet temperature sensor is arranged on the air outlet place that described drying unit is communicated with described urceolus, is used to detect the temperature of described air outlet, and the temperature of described air outlet is sent to master control borad;
Described master control borad is electrically connected with described air outlet temperature sensor, and described master control borad judges whether the temperature of described air outlet reaches temperature flex point or the highest design temperature when oven dry, if then control described drying unit and stop oven dry.
2. rolling washing dryer according to claim 1, it is characterized in that when described rolling washing dryer was unloaded, described master control borad judged that whether the temperature difference of described air outlet in the 4th time interval is greater than the 4th temperature difference, if then control described drying unit and stop oven dry.
3. rolling washing dryer according to claim 2, it is characterized in that, described rolling washing dryer also comprises: condenser, be communicated with described drying unit and described urceolus, when described master control borad judges whether the temperature of described air outlet is first design temperature, if then described master control borad control is arranged on the spray nozzle spray condensed water of described upper end of condenser, to cool off described circulating air through heating.
4. rolling washing dryer according to claim 3 is characterized in that, described rolling washing dryer also comprises:
The intake air temperature sensor is arranged on the air inlet place, is used to detect the temperature of described air inlet, and the temperature of described air inlet is sent to master control borad;
Described master control borad is connected with described intake air temperature sensor electrical, judges when described master control borad whether the temperature of described air inlet is lower than the release temperature, if then control gate and open; And
Described master control borad, be connected with described intake air temperature sensor electrical, when the oven dry stalled fan in the drying unit, described master control borad judges that whether the temperature difference of described air inlet in the 5th time interval is more than or equal to the 5th temperature difference, if the oven dry heating tube of then controlling in the described drying unit quits work.
5. method that adopts arbitrary described rolling washing dryer among the claim 1-4 to carry out temperature detection is characterized in that described method comprises:
The air outlet temperature sensor sends to master control borad with the temperature of the air outlet that detected drying unit is communicated with urceolus;
Described master control borad judges according to the temperature of described air outlet whether washings dries, if then control described drying unit and stop oven dry.
6. method according to claim 5 is characterized in that, the temperature of described air outlet temperature sensor is communicated with detected drying unit with urceolus air outlet sends to before the master control borad, and described method also comprises:
Described drying unit makes described circulating air through heating contact with the washings of described urceolus inside and realizes oven dry to the circulating air of described urceolus input through heating;
Described master control borad judges whether the temperature of described air outlet is first design temperature, if the spray nozzle spray condensed water of then described master control borad control upper end of condenser is to cool off described circulating air through heating.
7. method according to claim 6 is characterized in that, described master control borad judges that according to the temperature of described air outlet whether washings dries, and comprising:
Described master control borad judges whether the temperature of described air outlet reaches the temperature flex point; Perhaps
Described master control borad judges whether the temperature of described air outlet is the highest design temperature.
8. method according to claim 7 is characterized in that, described master control borad judges that whether the temperature of described air outlet reaches the temperature flex point, comprising:
Whether described master control borad judges the temperature difference of at interval interior described air outlet of the very first time more than or equal to first temperature difference, if then described master control borad judges that whether the temperature difference of described air outlet in the 3rd time interval is more than or equal to the 3rd temperature difference; Perhaps
Whether described master control borad judges the temperature difference of described air outlet in second time interval more than or equal to second temperature difference, if then described master control borad judges that the temperature difference of described air outlet in described the 3rd time interval is more than or equal to the 3rd temperature difference.
9. method according to claim 8 is characterized in that, when the temperature of described air outlet reaches the temperature flex point, described master control borad control described drying unit stop the oven dry comprising:
Described master control borad is controlled described drying unit and is continued to finish until lasting drying time to the circulating air of described urceolus input through heating, then controls described drying unit and stops oven dry.
10. method according to claim 7 is characterized in that, when the temperature of described air outlet during for the highest design temperature, described master control borad is controlled described drying unit and stopped oven dry and comprise: described master control borad is controlled described drying unit and stopped oven dry immediately.
11., it is characterized in that described master control borad is controlled described drying unit and stopped also to comprise after the oven dry according to claim 9 or 10 described methods:
Described master control borad is controlled described condenser and is continued the spray condensed water.
12. method according to claim 11 is characterized in that, described method also comprises:
The intake air temperature sensor sends to described master control borad with the temperature of the air inlet that detected described drying unit is communicated with described urceolus;
Described master control borad judges whether the temperature of described air inlet is lower than the release temperature, if then control described condenser and stop to spray condensed water, and the control gate is opened; And
During oven dry stalled fan in the described drying unit, described master control borad judges that whether the temperature difference of air inlet in the 5th time interval is more than or equal to the 5th temperature, if the oven dry heating tube of then controlling in the described drying unit quits work.
13. method according to claim 6 is characterized in that, described master control borad judges that whether the temperature of described air outlet is before first design temperature, and described method also comprises:
When described rolling washing dryer was unloaded, whether described master control borad judged the temperature difference of described air outlet in the 4th time interval greater than the 4th temperature difference, if then control described drying unit and stop oven dry.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100896460A CN101967746A (en) | 2009-07-27 | 2009-07-27 | Drum type washing and drying machine and temperature detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100896460A CN101967746A (en) | 2009-07-27 | 2009-07-27 | Drum type washing and drying machine and temperature detection method |
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| CN101967746A true CN101967746A (en) | 2011-02-09 |
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| CN2009100896460A Pending CN101967746A (en) | 2009-07-27 | 2009-07-27 | Drum type washing and drying machine and temperature detection method |
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Application publication date: 20110209 |