WO2011019207A2 - 건조기 및 그 제어방법 - Google Patents
건조기 및 그 제어방법 Download PDFInfo
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- WO2011019207A2 WO2011019207A2 PCT/KR2010/005271 KR2010005271W WO2011019207A2 WO 2011019207 A2 WO2011019207 A2 WO 2011019207A2 KR 2010005271 W KR2010005271 W KR 2010005271W WO 2011019207 A2 WO2011019207 A2 WO 2011019207A2
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- WIPO (PCT)
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- drying
- section
- temperature
- air
- cooling water
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/24—Condensing arrangements
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/04—Quantity, e.g. weight or variation of weight
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/38—Time, e.g. duration
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/28—Electric heating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/36—Condensing arrangements, e.g. control of water injection therefor
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/46—Control of the operating time
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/48—Control of the energy consumption
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
Definitions
- an object of the present invention is to provide an energy-saving dryer by reducing the amount of cooling water used to remove moisture in the air.
- the present invention in the dryer for drying the laundry by supplying cooling water to the condensation duct to remove the moisture in the circulating air, the condensation according to the moisture content of the air flowing into the condensation duct from the drum It provides a dryer comprising a control unit for controlling the amount of cooling water supplied to the duct.
- control unit preferably increases the supply amount of the cooling water when the moisture content is high. Therefore, it is preferable to supply a large amount of cooling water when the moisture content is high and to supply a small amount of cooling water when the moisture content is low.
- the amount of coolant may be controlled by controlling the opening degree of the coolant valve or controlling the amount of coolant supplied per unit time by using a flow control valve for controlling the flow rate of the supplied coolant. .
- drying may be referred to as a drying administration as part of the course.
- drying may be referred to as one course.
- the drying in the present invention may include both such a drying course and a drying stroke.
- a time point at which the heated air (hereinafter referred to as 'hot air') is supplied is referred to as a start point of drying, and a time point at which supply of hot air or unheated air (hereinafter referred to as 'cold air') is terminated. It is called the end point of.
- the supply of air may be stopped before the end of drying. Therefore, the time point at which air supply is finally terminated may be referred to as the end time of drying.
- the controller turns off the coolant valve for a preset time t1 after the hot air is supplied.
- the section for turning off the coolant valve is preferably performed at the beginning of drying. For example, it is preferable not to remove moisture in the air circulated by turning off the coolant valve for a predetermined time t1 when hot air starts to be supplied in the drying course. This is because, when drying is started, it is more important to raise the temperature by heating the components that perform drying rather than drying. This is because drying is more effective at high temperature than at low temperature.
- the controller may control the moving rate to change as the section is changed in a plurality of sections that are continuous until the hot air supply is terminated after the preset time t1.
- the plurality of sections may be divided into a dry initial stage, a dry concentration stage, and a late dry stage.
- control unit preferably controls the actual operation rate of the cooling water valve in the section (concentration section) where the moisture content is highest after hot air supply is higher than the actual operation rate in other sections. That is, it is preferable to control so as to increase the amount of cooling water supplied from other sections in the section having the highest moisture content in the air while supplying hot air to dry the laundry.
- a predetermined time t2 may elapse and the concentration section may be started.
- a predetermined time t3 may elapse and the concentration section may end.
- the predetermined time t3 may be differently set according to the amount of laundry in the drum.
- the difference between the temperature indirectly sensing the ambient temperature of the circulating air heat-exchanged in the drum after supplying the hot air and the temperature of sensing the ambient temperature before heating after the circulating air is introduced into the condensation duct is the preset temperature ( ⁇ T1). ),
- the concentration section may be terminated.
- the preset temperature ⁇ T1 may be preset according to the amount of laundry in the drum.
- the dryer may include a tub temperature sensor provided at a lower portion of the tub to sense an ambient temperature of a space in which drying is performed, and a duct temperature provided at the condensation duct or a drying duct to sense a temperature of air discharged from a drying space. It may include a sensor.
- the tub may be omitted in the dryer to perform only drying.
- the front or rear of the drum is supported by a supporter. That is, the drum is rotatably supported through the supporter. Therefore, the front and rear of the drum is blocked by the non-rotating supporter.
- the tub temperature sensor may be provided in the supporter of the front or rear of the drum.
- the tub temperature sensor may be referred to as a dry space temperature sensor or a wet air temperature sensor
- the duct temperature sensor may be referred to as a dry air temperature sensor.
- the controller may control to sense a temperature through the sensors during drying and determine an end point of a section for supplying heated air to the drum using the sensed temperatures.
- the controller may determine an end point of the concentration section by using the sensed temperatures. In contrast, the controller may determine a time point when the predetermined time t3 elapses after the start of drying as an end time point of the concentration section.
- the end point of the concentration section may be determined using both temperature and time.
- the end point of the concentration section is preferably variable according to the amount of laundry.
- the above object is a drying start section for driving the drying heater and starting the drying stroke by turning off the cooling water valve;
- a control method of the dryer characterized in that it comprises a drying end section for driving the cooling water valve at a first practical rate after the concentrated section.
- the first running rate may be different from each other in the dry grass section and the drying end section, but preferably lower than the second running rate.
- the drying start section to start the drying by maintaining the OFF state of the cooling water valve and supply the heating air;
- a drying candle section for driving the cooling water valve at a predetermined actual rate after the drying start section;
- a drying late section for driving the cooling water valve at a predetermined actual operation rate to proceed with drying and supplying heating air;
- the cooling water valve is driven at a higher operating rate than the predetermined operating rates, so that drying is controlled to include a concentrated section for condensing moisture in the air. It can be achieved by the control method of the dryer.
- the material of the laundry to be dried or the amount of moisture contained in the laundry may vary. Therefore, for effective drying in consideration of these variables, it is possible to simply not determine the drying concentration section on a time basis.
- the start point of the dry concentration section and the end point of the dry concentration section based on the difference in temperature sensed by the two temperature sensors described above. That is, it is preferable to determine the start and end time points of the drying concentration section by using the difference between the temperature sensed in the drying space and the temperature sensed in the duct.
- the present invention has an effect of improving the drying efficiency by supplying a lot of cooling water when the moisture content of the circulated air is high and by supplying the cooling water at a relatively low actual operation rate at the beginning and the end of drying.
- the drying time can be significantly reduced by improving the drying efficiency, and the amount of cooling water used is also significantly reduced.
- the present invention can effectively determine the drying concentration section where the drying is concentrated. Thus, efficient drying may be performed in each section in all sections until the drying starts and ends. Through this, it is possible to provide a dryer with improved energy saving and user convenience.
- FIG. 1 is a side cross-sectional view showing a dryer according to an embodiment of the present invention.
- FIG. 3 is a flow chart showing a control method of the dryer according to FIG.
- the present invention has a combined-use laundry dryer or combined-use washing machine in one embodiment.
- the present invention encompasses both condensation dryers using cooling water.
- the blowing fan 51 is further provided for the circulation of the air.
- the blowing fan 51 may be linked to the rotation of the motor (M), it may be provided to rotate using a separate motor.
- the tub 2 may be provided inside the cabinet 1 to store washing water. Therefore, the drum 3 is provided in the tub 2 to rotate, and washing or drying of the laundry may be performed through this rotation.
- the present embodiment may be made including the temperature sensors (2a, 4a).
- the controller may control the temperature sensors to sense a temperature and control a drying operation by using the sensed temperature.
- the temperature sensor 2a is preferably provided to sense the temperature after the air supplied into the drum 3 is heat-exchanged with the laundry. That is, it is preferable to be provided to sense the temperature of the circulating air before entering the condensation duct (4). Therefore, it is preferable to be located near the inlet 4 'of the condensation duct 4.
- the temperature sensor 2a may be referred to as a tub temperature sensor or a wet air temperature sensor.
- the tub temperature sensor 2a senses the ambient temperature in the tub. Therefore, the ambient temperature of the circulating air heat exchanged in the drum after hot air supply is indirectly sensed.
- the tub temperature sensor 2a may be provided to sense the temperature of the wash water during washing and the ambient temperature during drying.
- the temperature sensor 4a may be provided in the condensation duct 4. Of course, it may be provided in the drying duct (5).
- the temperature sensor 4a may be referred to as a duct temperature sensor 4a because it may be provided to sense a temperature of air circulated into the duct.
- the duct temperature sensor 4a is preferably provided to sense the temperature of the circulating air after passing the condensate water supply unit 6. And more specifically, it is preferably provided to sense the temperature of the circulating air before passing through the drying heater (53).
- the condensation duct 4 may be provided at a position before passing through the condensate water supply unit 6 and passing through the blower fan 51. Therefore, the temperature sensor 4a may be referred to as a dry air temperature sensor.
- the temperature sensor 2a installed inside the tub 2 is preferably installed at a portion where the cooling water does not contact, such as the inner rear surface of the tub 2, in order to minimize the influence of the cooling water when measuring the temperature in drying.
- the temperature sensed by the tub temperature sensor 2a and the duct temperature sensor 4a that is, the temperature of the sensed wet air and dry air increases as the drying proceeds. This is because the moisture contained in the laundry is removed as the drying proceeds, while the circulation air is heated through the drying heater 53 continuously or intermittently. The degree of temperature rise due to such heated circulating air will vary, but the temperature inside the dryer will rise. However, as the drying proceeds, a difference may occur between the temperature rising in certain parts of the dryer and the temperature rising in other parts. Therefore, the drying operation may be controlled using the difference, and for example, the drying operation may be controlled using the temperature sensed by the tub temperature sensor 2a and the duct temperature sensor 4a.
- the control unit may control the drying operation by using the temperature difference ⁇ T between the temperature sensors 2a and 4a, and more specifically, may control the actual operation rate of the cooling water valve.
- the controller may control the drying to be divided into a plurality of sections by using the temperature difference ⁇ T to perform effective drying. This will be described later.
- the embodiment having the above-described configuration is a method of condensing the air discharged from the drum by first supplying the cooling water into the condensation duct through the cooling water supply unit. Therefore, a large amount of water is used not only for washing but also for drying.
- the initial drying it is generally started to heat the air at room temperature. Of course, with the heating of the air will start to heat the laundry contained in the laundry at room temperature and the moisture contained in the laundry.
- heating of the condensation duct 4, the drying duct 5, the drum 3, and optionally the tub 2 is performed at room temperature.
- the cooling water is supplied, there is a problem in that the cooling water is wasted. In other words, even when the temperature of the circulating air is reduced by supplying the cooling water, the amount of condensed water is very small, and the cooling water is unnecessarily wasted.
- the drying start section is a section in which the drying heater 53 is continuously driven.
- the drying heater 53 is turned on to generate heat when drying starts.
- OFF and ON may be repeatedly controlled in order to prevent damage to laundry or the like due to overheating of the drying heater 53 or overheating of the drying air.
- the ON state can be maintained for a predetermined time.
- Such a section may be referred to as a dry start section.
- the temperature at which the drying heater 53 is turned off for the first time may be preset. For example, when the temperature of the drying heater 53 or the temperature around it is 100 ° C., the drying heater 53 may be controlled to be turned off. Therefore, the section until the drying heater 53 is turned off for the first time can be referred to as a drying start section, in which the cooling water valve can be controlled to be maintained in the OFF state.
- the cooling water generally uses cold water, the temperature of the cooling water is generally lower than room temperature.
- the temperature of the cooling water is generally lower than room temperature.
- the cooling water valve is controlled to operate in the same pattern until the drying is completed. That is, it controlled so that cooling water may be supplied with the same actual actuation rate. This increases the drying time and increases the amount of cooling water used.
- the drying herbaceous zone is a section in which moisture on the surface of the laundry is evaporated. In this section, it can be said that the section starts to heat up to the inside of the laundry and the water inside the laundry. Therefore, a large amount of moisture is not evaporated in the drying herb. This is also because laundry is agglomerated in a wet state between the drying apparatus and the area where the laundry and the heating air contact is small. Of course, it is possible to increase this area by the driving of the drum, but there will be a limit.
- the concentrated section proceeds rapidly.
- the interior of the dryer is evenly heated, and since the surface of the laundry is heated to some extent as well as the inside, moisture is rapidly evaporated.
- the agglomeration of the laundry is alleviated, and the area where the laundry and the heating air contact each other becomes very large.
- This section may be referred to as a section in which the water that has not evaporated inside the laundry evaporates.
- the actuation rate of the coolant valve is driven at a reference actuation rate (for example, 8 seconds ON / 10 seconds OFF) and discharged through the drum 3 or the tub 2 during the drying stroke.
- a reference actuation rate for example, 8 seconds ON / 10 seconds OFF
- the cooling rate of the cooling water valve may be set differently from the initial and the late drying, but is preferably set lower than the maximum rate.
- the problem is how to determine and determine the moisture content that changes.
- the problem is how to determine and determine how much the drying has proceeded. Such determination and determination may be made based on the temperature sensed by the controller through the tub temperature sensor 2a and the duct temperature sensor 4a.
- the rate of increase in temperature will be different from each other, and thus the temperature difference will vary. That is, the temperature difference between the temperature sensed by the duct temperature sensor 4a and the temperature sensed by the tub temperature sensor 2a will vary as drying proceeds.
- This temperature difference can be determined by determining the moisture content in the air circulated, and can also be determined by determining the degree of drying progress. In addition, it will be possible to determine the start point or the end point of the concentrated section where the water evaporates rapidly, and the end point of the drying may also be determined.
- drying start section may be referred to as a drying start section, for example, may be performed for 5 minutes (S200).
- the drying start section may be a section from when the drying heater 53 is turned on for the first time to turned off. This section is omitted in Figure 2 because it is a relatively short section compared to the other sections.
- the drying start section is performed after the drying start section, in which cooling water is supplied to condense and remove moisture in the circulating air.
- the temperature sensed by the duct temperature sensor 4a at a moment in the drying apparatus may be lower than the temperature sensed by the tub temperature sensor 2a. This is because the temperature sensed immediately after cooling with coolant may be lower than the ambient temperature of the tub. In this case, the temperature difference ⁇ T may be determined as zero.
- the drying apparatus may be referred to as a section for heating the whole for drying. Since the evaporation of moisture occurs in such a dry grass section, the control unit preferably controls the operation of the cooling water valve at the first rate of operation (S300).
- This section may be referred to as a concentrated section, and since moisture evaporates rapidly, the moisture content is very high. Therefore, it is highly desirable to concentrate the cooling water in this section to intensively remove moisture in the circulating air.
- the start time of the concentration section may be preset. That is, by determining whether the predetermined time t2 has elapsed after the start of drying, the concentration section may be controlled to start.
- the preset time t2 may be 60 minutes.
- the t2 may be determined uniformly regardless of the amount of laundry to be dried. This is because the amount of laundry can be neglected because the heat capacity of duct configurations, drums, tubs, etc. is very large compared to laundry or moisture as described above. However, it may be possible to preset t2 longer when there is more laundry than when the amount of laundry is small.
- the starting point of the concentration section may be determined using the temperature difference ⁇ T.
- evaporation of moisture occurs rapidly. This is because all of the components are heated to some extent. Thus, the deviation in temperature generated due to the cooling water supply can be ignored. Then, due to latent heat due to evaporation of moisture, the amount of heat of the heated air is transferred to the moisture very rapidly. Therefore, heat exchange is very effective throughout the dryer, and a section in which the temperature difference ⁇ T is not changed is generated. Therefore, when the temperature difference ⁇ T does not change and lasts for a predetermined time, it may be determined that the evaporation of moisture occurs rapidly, thereby determining the starting point of the concentration section.
- the temperature difference ⁇ T may be controlled to be measured, for example, at 30 second intervals.
- the temperature difference ⁇ T may be measured as an average value of temperatures measured a plurality of times during a predetermined time through the tub temperature sensor and the duct temperature sensor.
- the start point of the concentration section may be determined.
- the cooling water valve As described above, moisture is rapidly evaporated in the concentrated section, and the moisture content of air introduced into the condensation duct is very high. Therefore, the amount of moisture condensed even by a slight temperature drop becomes very large. Therefore, in the concentrated section, it is highly preferable to drive the cooling water valve at the second actual operation rate (S500).
- the second running rate means higher running rate than the first running rate. Therefore, by supplying more cooling water to condensate moisture in the air intensively, thereby further promoting the evaporation of moisture.
- the concentration section proceeds, the moisture of the drum or tub is almost evaporated. The moisture on the surface of the laundry is also almost evaporated. Thus, the rate at which moisture is evaporated gradually decreases. Therefore, it is also very important to determine and determine the end point of the concentration section.
- the end point of the concentration section may be preset. That is, when the preset time t3 elapses after the start of drying, it may be determined (S600) that the concentration section ends. For example, 150 minutes after the start of drying may be determined that the concentration section is finished.
- the predetermined time t3 may be determined based on the temperature difference ⁇ T. That is, the time point at which the temperature difference ⁇ T satisfies the preset temperature ⁇ T1 may be determined as the end point of the concentration section (S600).
- the time point at which the temperature difference ⁇ T satisfies the preset temperature ⁇ T1 may be determined as the end point of the concentration section (S600).
- the time required for the dry concentration section will vary depending on the amount of laundry.
- the temperature difference DELTA T is more related to the evaporation rate of water than the amount of water to be evaporated. This is because an increase in the temperature difference ⁇ T means that the heated air is not sufficiently heat exchanged for moisture evaporation. That is, since the evaporation rate is low because there is not much moisture to evaporate.
- the preset temperature ⁇ T1 when the temperature difference satisfies a predetermined value, that is, the preset temperature ⁇ T1, it may be determined that the temperature difference is out of the section in which the water evaporation occurs abruptly.
- the preset temperature ⁇ T1 may be referred to as 4, which may be preset regardless of the amount of laundry.
- a cooling water valve can be performed at the above-mentioned first rate of operation.
- the above-described temperature difference ⁇ T may be used as the end point of the drying end section.
- the drying end section may be determined as the end point.
- the preset temperature ⁇ T2 may be preset differently according to a drying course or a user's selection, or may be preset differently according to the amount of laundry.
- the first time when the preset value is detected may be determined as the start time or the end time, but is not necessarily limited thereto. For example, when a value larger than a predetermined value is detected two or more times, it may be determined as a start time or an end time.
- the hot air supply ends.
- the cold air may be supplied (S900) for a predetermined time. Drying can be completely ended by the end of the cold wind supply. Of course, the cold wind supply may be omitted.
- drying is preferably completed by supplying cold air. This is because there is a risk of burns when the user takes out the heated laundry immediately.
- Tc may be calculated after only hot air is performed without condensation, and for example, may be calculated after 5 minutes of drying.
- the temperature difference ⁇ T can be measured uniformly regardless of the initial temperature deviation.
- the drying rate is increased by about 1% compared to the case where the drying stroke is controlled by controlling the cooling water valve at the same actual operation rate. It works.
- the 1% increase in the drying degree can shorten the drying time by 30 minutes than when applying the conventional algorithm, the drying efficiency is remarkably improved.
- each section of the drying may be determined through a time reference or a temperature difference ⁇ T or each section of the drying may be determined using both the time reference and the temperature difference ⁇ T.
- the drying start section may be determined based on time and the drying concentration section may be determined using a temperature difference ⁇ T.
- the amount of cooling water supplied in each section of the drying is changed.
- the amount of coolant may be varied by, for example, varying the actual rate of coolant valves.
- the control of the drying heater 53 may also be controlled differently in each section of the above-described drying.
- the drying heater 53 may be controlled so that ON is repeated when the drying start section has elapsed, for example, by turning ON at a predetermined lower limit temperature and OFF at a predetermined upper limit temperature. Therefore, it is possible to set the predetermined lower limit temperature and the upper limit temperature higher in the drying concentration section than in other sections. For example, when the temperature of the heater is controlled so that ON and OFF are repeated between 97 ° C. and 100 ° C. in the drying candle section, the temperature of the heater is controlled to be repeated between 99 ° C. and 102 ° C. in the drying concentration section. You could do it.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims (24)
- 냉각수를 응축덕트로 공급하여 순환 공기 내의 수분을 제거하여 세탁물을 건조하는 건조기에 있어서,드럼에서 응축덕트로 유입되는 공기의 함습량에 따라 상기 응축덕트로 공급되는 냉각수의 양을 달리 제어하는 제어부를 포함하는 건조기.
- 제 1 항에 있어서,상기 제어부는 상기 함습량이 높은 경우에 상기 냉각수의 공급량을 증가시킴을 특징으로 하는 건조기.
- 제 1 항에 있어서,상기 제어부는 냉각수를 공급하는 냉각수 밸브의 실동율을 달리 제어함을 특징으로 하는 건조기.
- 제 3 항에 있어서,상기 제어부는 열풍 공급 후 기설정된 시간(t1) 동안 또는 건조 히터가 OFF될 때까지 냉각수 밸브를 OFF하여 건조시작구간이 수행되도록 제어함을 특징으로 하는 건조기.
- 제 4 항에 있어서,상기 제어부는 상기 건조시작구간 후 열풍 공급이 종료될 때까지 연속되는 3개의 구간에서 상기 구간이 바뀜에 따라 상기 실동율이 바뀌도록 제어함을 특징으로 하는 건조기.
- 제 5 항에 있어서,상기 제어부는 상기 연속되는 3개의 구간 중 중간 구간에서의 실동율이 가장 크게 제어함을 특징으로 하는 건조기.
- 제 4 항에 있어서,상기 제어부는 상기 연속되는 3개의 구간 중 중간 구간에서 상기 건조 히터에서 가장 많은 열이 발생되도록 제어함을 특징으로 하는 건조기.
- 제 5 항에 있어서,상기 열풍 공급 종료 후 소정 시간 동안 냉풍이 공급되어 건조가 종료됨을 특징으로 하는 건조기.
- 제 3 항에 있어서,상기 제어부는 열풍 공급 후 상기 함습율이 가장 높은 구간(집중구간)에서의 상기 냉각수 밸브의 실동율을 다른 구간에서의 실동율보다 높게 제어함을 특징으로 하는 건조기.
- 제 9 항에 있어서,열풍 공급 후 기설정된 시간(t2)이 경과되어 상기 집중구간이 시작됨을 특징으로 하는 건조기.
- 제 9 항에 있어서,열풍 공급 후 기설정된 시간(t3)이 경과되어 상기 집중구간이 종료됨을 특징으로 하는 건조기.
- 제 11 항에 있어서,상기 기설정된 시간(t3)는 드럼 내의 세탁물의 양(amount of laundry)에 따라 달리 기설정됨을 특징으로 하는 건조기.
- 제 9 항에 있어서,열풍 공급 후 드럼 내에서 열교환된 순환 공기의 분위기 온도를 간접적으로 센싱한 온도와 순환 공기가 응축덕트로 유입된 후 가열되기 전의 분위기 온도를 센싱한 온도와의 차이가 기설정온도(△T1) 이상일 때 상기 집중구간이 종료됨을 특징으로 하는 건조기.
- 제 13 항에 있어서,상기 기설정온도(△T1)는 드럼 내의 세탁물의 양에 따라 기설정됨을 특징으로 하는 건조기.
- 캐비닛;상기 캐비닛 내측에 구비되는 터브;상기 터브의 내측에 회동 가능하게 구비되는 드럼;상기 터브와 연통되어 상기 드럼으로부터 배출된 순환 공기를 응축하도록 구비된 응축덕트;상기 응축덕트와 연결되어 순환 공기를 가열하여 상기 드럼으로 공급하도록 구비된 건조덕트; 그리고건조 시 드럼으로 가열된 공기가 공급되는 구간을 세분하여 상기 순환 공기 중의 함습율이 가장 높은 구간(집중구간)을 결정하고, 다른 구간에 비해서 상기 집중구간에 상기 응축덕트로 공급되는 냉각수의 양을 많게 제어하는 제어부를 포함하여 이루어지는 건조기.
- 제 15 항에 있어서,상기 터브의 하부에 구비되어 건조 시 분위기 온도를 센싱하는 터브 온도 센서; 그리고상기 응축덕트 또는 건조덕트에 구비되어 순환 공기가 응축덕트로 유입된 후 가열되기 전의 분위기 온도를 센싱하는 덕트 온도 센서를 포함함을 특징으로 하는 건조기.
- 제 16 항에 있어서,상기 제어부는,건조 시 상기 센서들을 통해 온도를 감지하도록 제어하고, 상기 감지된 온도들을 이용하여 상기 드럼으로 가열된 공기를 공급하는 구간의 종료 시점을 결정함을 특징으로 하는 건조기.
- 제 17 항에 있어서,상기 제어부는,상기 감지된 온도들을 이용하여 상기 집중구간의 종료 시점을 결정함을 특징으로 하는 건조기.
- 제 17 항에 있어서,상기 제어부는,건조 시작 후 기설정된 시간(t3)이 경과되는 시점을 상기 집중구간의 종료 시점으로 결정함을 특징으로 하는 건조기.
- 제 18 항 또는 제 19 항에 있어서,상기 집중구간의 종료시점은 세탁물의 양에 따라 가변됨을 특징으로 하는 건조기.
- 제 15 항에 있어서,상기 제어부는,건조 시작 후 기설정된 시간(t2)이 경과되는 시점을 상기 집중구간의 시작 시점으로 결정함을 특징으로 하는 건조기.
- 냉각수 밸브의 OFF 상태를 유지하고 가열 공기를 공급하여 건조를 시작하는 건조시작구간;상기 건조시작 구간 후 상기 냉각수 밸브를 소정 실동율로 구동하는 건조초기구간;상기 냉각수 밸브를 소정 실동율로 구동하여 건조를 진행하고 가열 공기의 공급을 완료하는 건조후기구간; 그리고상기 건조초기 구간과 상기 건조후기구간 사이에서, 상기 소정 실동율들 보다 높은 실동율로 상기 냉각수 밸브를 구동하여, 공기 중의 수분을 집중적으로 응축시키는 집중구간을 포함하여 건조가 진행되도록 제어됨을 특징으로 하는 건조기의 제어방법.
- 제 22 항에 있어서,상기 집중구간에서 공기를 가열하는 건조 히터의 발열량이 가장 크도록 제어됨을 특징으로 하는 건조기의 제어방법.
- 제 23 항에 있어서,상기 건조 히터가 ON되는 하한 온도와 OFF되는 상한 온도는 다른 구간에서보다 상기 집중구간에서 높게 설정됨을 특징으로 하는 건조기의 제어방법.
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US13/377,583 US20120151792A1 (en) | 2009-08-11 | 2010-08-11 | Dryer and control method of the same |
EP10808356.9A EP2466002B1 (en) | 2009-08-11 | 2010-08-11 | Dryer and control method of the same |
AU2010283087A AU2010283087B2 (en) | 2009-08-11 | 2010-08-11 | Dryer and control method of the same |
CN201080026186.8A CN102713047B (zh) | 2009-08-11 | 2010-08-11 | 干衣机及其控制方法 |
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KR20090073829 | 2009-08-11 | ||
KR10-2009-0073829 | 2009-08-11 | ||
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KR1020090081665A KR101821195B1 (ko) | 2009-08-11 | 2009-08-31 | 건조기 및 그 제어방법 |
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EP (1) | EP2466002B1 (ko) |
KR (1) | KR101821195B1 (ko) |
CN (1) | CN102713047B (ko) |
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ITPR20120078A1 (it) * | 2012-11-19 | 2014-05-20 | Indesit Co Spa | Metodo di attivazione di una elettrovalvola. |
PL2878250T3 (pl) * | 2013-11-29 | 2020-09-07 | Electrolux Appliances Aktiebolag | Sposób obsługiwania cyrkulującego wodę urządzenia gospodarstwa domowego |
CN104711833B (zh) * | 2013-12-13 | 2018-04-06 | 博西华电器(江苏)有限公司 | 干衣机 |
US9297493B2 (en) | 2014-05-13 | 2016-03-29 | Electrolux Appliances Aktiebolag | Laundry dryer with fire-resistant shielding |
CN105483999A (zh) * | 2014-09-18 | 2016-04-13 | 博西华电器(江苏)有限公司 | 干衣机及其烘干方法 |
CN105483995A (zh) * | 2014-09-18 | 2016-04-13 | 博西华电器(江苏)有限公司 | 干衣机的烘干方法以及采用该烘干方法的干衣机 |
CN105483994A (zh) * | 2014-09-18 | 2016-04-13 | 博西华电器(江苏)有限公司 | 干衣机及其烘干方法 |
CN107541919B (zh) * | 2016-06-27 | 2020-05-22 | 青岛海尔滚筒洗衣机有限公司 | 一种根据干衣机出筒空气温度变化调节冷凝介质量的方法 |
KR20180023277A (ko) | 2016-08-25 | 2018-03-07 | 엘지전자 주식회사 | 의류처리장치 |
CN109082819A (zh) * | 2017-06-14 | 2018-12-25 | 无锡小天鹅股份有限公司 | 洗干一体机及其冷凝阀控制方法、装置 |
CN110359254B (zh) * | 2018-04-11 | 2022-03-15 | 青岛海尔洗涤电器有限公司 | 用于衣物处理设备的控制方法和衣物处理设备 |
CN110453468B (zh) * | 2018-05-08 | 2022-01-04 | 青岛海尔洗涤电器有限公司 | 一种衣物处理装置及控制方法 |
PL3792387T3 (pl) * | 2019-09-10 | 2022-03-21 | Johannes Guggenberger | Kondensator/wymiennik ciepła, urządzenie piorące i sposób wykorzystania ciepła odlotowego |
DE102019134182A1 (de) * | 2019-12-12 | 2021-06-17 | Miele & Cie. Kg | Verfahren und Vorrichtung zum Betreiben eines Reinigungsgeräts und Reinigungsgerät |
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2010
- 2010-08-11 CN CN201080026186.8A patent/CN102713047B/zh not_active Expired - Fee Related
- 2010-08-11 AU AU2010283087A patent/AU2010283087B2/en not_active Ceased
- 2010-08-11 WO PCT/KR2010/005271 patent/WO2011019207A2/ko active Application Filing
- 2010-08-11 US US13/377,583 patent/US20120151792A1/en not_active Abandoned
- 2010-08-11 EP EP10808356.9A patent/EP2466002B1/en not_active Not-in-force
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Also Published As
Publication number | Publication date |
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EP2466002A2 (en) | 2012-06-20 |
AU2010283087A1 (en) | 2011-12-15 |
US20120151792A1 (en) | 2012-06-21 |
KR101821195B1 (ko) | 2018-01-23 |
EP2466002B1 (en) | 2017-10-04 |
CN102713047A (zh) | 2012-10-03 |
KR20110016361A (ko) | 2011-02-17 |
EP2466002A4 (en) | 2015-07-15 |
AU2010283087B2 (en) | 2013-04-18 |
WO2011019207A3 (ko) | 2012-05-10 |
CN102713047B (zh) | 2015-09-09 |
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