WO2016188265A1 - 一种干衣机自动烘干判断方法及干衣机 - Google Patents

一种干衣机自动烘干判断方法及干衣机 Download PDF

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WO2016188265A1
WO2016188265A1 PCT/CN2016/079410 CN2016079410W WO2016188265A1 WO 2016188265 A1 WO2016188265 A1 WO 2016188265A1 CN 2016079410 W CN2016079410 W CN 2016079410W WO 2016188265 A1 WO2016188265 A1 WO 2016188265A1
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temperature
time
drying
clothes dryer
dryer
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French (fr)
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姚龙平
朱冬冬
施衍奇
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Qingdao Haier Washing Machine Co Ltd
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Qingdao Haier Washing Machine Co Ltd
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Priority to KR1020177037216A priority Critical patent/KR20180011813A/ko
Priority to EP16799154.6A priority patent/EP3305976A4/en
Publication of WO2016188265A1 publication Critical patent/WO2016188265A1/zh
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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
    • D06F58/32—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
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/12—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
    • D06F2103/32—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
    • D06F2103/38—Time, e.g. duration

Definitions

  • the invention relates to the field of dry clothes, in particular to a method for judging the automatic drying of a clothes dryer and a clothes dryer.
  • the dry clothes machine installs an NTC (thermistor) at the outlet of the drum.
  • NTC thermoistor
  • the automatic drying judgment using NTC is an important branch of the automatic drying control of the dryer.
  • the NTC has Figure 1. The characteristic of the curve shown, phase 1 is the start of the heating phase, the exhaust gas temperature rises significantly; phase 2 is the stable drying phase, the exhaust gas temperature is stable; phase 3 is the phase where the drying is about to end, and the exhaust gas temperature rises significantly.
  • the specific load the test measures the degree of drying of the clothes under different ⁇ T.
  • the disadvantage of this method is that the amount of the clothes has a relatively large influence on the drying effect, which is often more clothes, and the drying effect is better when the load is close to full load, and when the clothes are small, the drying effect is poor, often it is not baked. dry. It is also possible to carry out drying test on different amounts of clothes, and obtain several ranges. The corresponding range is selected according to the amount of dried clothes to determine the drying state, but only the range is taken, only discrete points can be detected, and Includes all loads.
  • the present invention has been made in view of this.
  • the object of the present invention is to overcome the deficiencies of the prior art and to provide a method for judging the automatic drying of a clothes dryer.
  • the quadratic function is a quadratic function with an opening upward, and the corresponding relationship between the time t and the temperature T1 of the all loads in the dry state is the left part of the apex of the quadratic function.
  • the dryer calculates the curve formula of the quadratic function through experimental test, and stores the curve formula in the dryer main control board. Inside, the curve formula is directly taken during the drying process.
  • the dryer tests the time t of the plurality of loads and the temperature T1 in the cylinder through experiments, and forms a smooth curve according to the plurality of sets of time t and the temperature T1 in the cylinder, and the smooth curve is a quadratic function curve, and the second is determined.
  • Function curve formula
  • the dryer tests the time t of the at least three loads drying and the temperature T1 in the cylinder through experiments, and determines a quadratic function curve formula according to the three sets of time t and the temperature T1 in the cylinder.
  • a temperature sensor is arranged at the air outlet of the dryer drum to detect the temperature inside the cylinder in real time.
  • T1 at 2 + bt + c, where a, b, c are constants, the constant and the maximum load, heating power, and wind speed of the dryer Related to the temperature control system.
  • the value of c is corrected, and the ambient temperature is measured at the beginning of drying.
  • the present invention also provides a clothes dryer having the above method.
  • the quadratic function curve in the judging method of the present invention includes the correspondence between time and temperature of all loads in the drying state, as long as the drying process temperature curve of the laundry intersects with the quadratic function, the laundry is dried, that is, when When the temperature in the cylinder is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the internal laundry can be judged to be dried, and the quantitative judgment of the continuous load is realized, and the accurate drying state can be judged for any load, and the dryer is ensured. Drying effect of any load.
  • Figure 2 A drying curve diagram in the judging method of the present invention
  • Figure 3 is a flow chart of the determination method of the present invention.
  • the invention relates to a method for judging automatic drying of a clothes dryer, and setting a correspondence relationship between time t and temperature T1 of all loads in a drying state in a dryer; in the drying process, the dryer detects the temperature value in the cylinder in real time. T2, and compares with the set temperature value T1 corresponding to the time; when the real-time detection temperature value T2 is greater than or equal to the set temperature value T1 corresponding to the time, Dry the clothes in the broken barrel.
  • This kind of judgment method can judge the accurate drying state for any load, and guarantee the drying effect of the dry load of any dryer.
  • the a, b, c correspond to the maximum load or capacity, heating power, wind speed and temperature control system of the dryer. That is, each model corresponds to a group a, b, and c, and each model has a correspondence function of a quadratic function.
  • the drying machine obtains the curve formula of the quadratic function through experimental test, and stores the curve formula into the main control board of the dryer, and directly adopts the curve formula during the drying process, when the temperature in the cylinder is greater than or equal to the time corresponding to When the temperature on the quadratic function curve is determined, the internal laundry can be judged to be dried.
  • the dryer of this model is tested by experiment to test the time t of the at least three loads and the temperature T1 in the cylinder, and determine the quadratic function curve formula according to the three sets of time t and the temperature T1 in the cylinder. .
  • the temperature in the cylinder is greater than or equal to the temperature on the quadratic function curve corresponding to the time, the internal laundry can be judged to be dried.
  • a temperature sensor is arranged at the air outlet of the dryer drum to detect the temperature inside the cylinder in real time.
  • the dryer outlet of the dryer drum is provided with an NTC (thermistor).
  • the corrected quadratic function is more accurate and more accurate in obtaining accurate drying end points for different weights of clothing.
  • the invention relates to a clothes dryer using the above-mentioned judging method, a temperature sensor is arranged at the air outlet of the dryer drum, and the temperature in the detection cylinder is detected in real time.
  • the dryer of the model is experimentally tested.
  • the correspondence between time t and temperature T1 of all loads in the dry state is a quadratic function curve formula, which is stored in the main control panel of the dryer.
  • the dryer detects the temperature value T2 in the cylinder in real time.
  • this formula Presetting this formula in the main control panel of the dryer can achieve an accurate drying end point for different weights of clothing.
  • the a, b, and c constants in the formula are tested at an ambient temperature of 20 degrees Celsius.
  • the c value needs to be corrected as the ambient temperature is different.
  • the ambient temperature is measured when the machine starts to operate, and the ambient temperature is T3.
  • T3 the ambient temperature
  • c 72-T3*0.9.
  • the reason why the value of c is calculated is that the quadratic function appears at different positions in the coordinate system with the difference of the ambient temperature, and the tested c value is linear with 0.9 times of T3.
  • the corrected quadratic function is more accurate and more accurate in obtaining accurate drying end points for different weights of clothing.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

一种干衣机自动烘干判断方法及干衣机，干衣机内设置所有负载在烘干状态下时间t与温度T1的对应关系；烘干过程中干衣机实时检测筒内温度值T2，并与设定的该时间对应的温度值T1进行比较；当实时检测温度值T2大于等于设定的该时间对应的温度值T1时，判断桶内衣物烘干。该种判断方法实现了连续负载的定量判断，对任何负载都能够准确判断烘干状态，保障了干衣机任意负载的烘干效果。

Description

一种干衣机自动烘干判断方法及干衣机 技术领域
本发明涉及干衣领域，尤其是一种干衣机自动烘干判断方法及干衣机。
背景技术
一般干衣机会在滚筒出风口安装一个NTC(热敏电阻)，使用NTC进行自动烘干判断是目前干衣机自动烘干控制的一个重要分支，随着烘干的进行，该NTC有图1所示的曲线特性，阶段1是开始加热阶段，排气温度明显上升；阶段2是稳定烘干阶段，排气温度稳定；阶段3是烘干将要结束的阶段，排气温度明显上升。
一般的做法是取阶段2的温度值为稳定温度值T2，取阶段3的温度值T3，令δT＝T3-T2，针对具体机型，具体负载，试验测得不同δT下的衣物烘干程度，从而实现自动烘干控制。这种做法的缺点在于，衣物量的大小多少对于烘干效果有比较大的影响，往往是衣物多，接近满载时烘干效果较好，而衣物少时，其烘干效果差，经常是烘不干。还可以对不同量的衣物进行了烘干测试，得到几个范围，根据烘干衣物的量选择对应的范围确定烘干状态，但是也只是取的范围，只能检测到离散的点，并不能包括所有负载。
鉴于此提出本发明。
发明内容
本发明的目的为克服现有技术的不足，提供一种干衣机自动烘干判断方法。
为了实现该目的，本发明采用如下技术方案：一种干衣机自动烘干判断方法，干衣机内设置所有负载在烘干状态下时间t与温度T1的对应关系；烘干过程中干衣机实时检测筒内温度值T2，并与设定的该时间对应的温度值T1进行比较；当实时检测温度值T2大于等于设定的该时间对应的温度值T1时，判断桶内衣物烘干。
所述所有负载在烘干状态下时间t与温度T1的对应关系为二次函数关系。
所述二次函数为一开口向上的二次函数，所述所有负载在烘干状态下时间t与温度T1的对应关系曲线为二次函数顶点的左侧部分。
干衣机通过实验测试得到所述二次函数的曲线公式，将该曲线公式存储到干衣机主控板 内，烘干过程中直接调取该曲线公式。
干衣机通过实验测试多个负载烘干时的时间t和筒内温度T1，根据该多组时间t和筒内温度T1连成一平滑曲线，该平滑曲线为二次函数曲线，确定该二次函数曲线公式。
干衣机通过实验测试至少三个负载烘干时的时间t和筒内温度T1，根据该三组时间t和筒内温度T1确定二次函数曲线公式。
所述干衣机滚筒出风口设置温度传感器，实时检测检测筒内温度。
所有负载在烘干状态下时间t与温度T1的对应关系为：T1＝at2+bt+c，其中a、b、c为常数，所述常数与干衣机的最大负载、加热功率、风速和温控系统相关。
随着环境温度的不同，对c值进行修正，在烘干开始时测量环境温度，记环境温度为T3，则：c＝72-T3*0.9。
本发明还提供了一种具有上述方法的干衣机。
采用本发明所述的技术方案后，带来以下有益效果：
本发明所述判断方法中二次函数曲线包含了所有负载在烘干状态下时间与温度的对应关系，只要衣物的烘干过程温度曲线与该二次函数相交即为衣物烘干，也就是当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干，实现了连续负载的定量判断，对任何负载都能够判断准确烘干状态，保障了干衣机任意负载的烘干效果。
附图说明
图1：现有技术中烘干曲线图；
图2：本发明所述判断方法中的烘干曲线图；
图3：本发明所述判断方法流程图。
具体实施方式
下面结合附图对本发明的具体实施方式作进一步详细的描述。
本发明所述一种干衣机自动烘干判断方法，在干衣机内设置所有负载在烘干状态下时间t与温度T1的对应关系；烘干过程中干衣机实时检测筒内温度值T2，并与设定的该时间对应的温度值T1进行比较；当实时检测温度值T2大于等于设定的该时间对应的温度值T1时，判 断桶内衣物烘干。该种判断方式对任何负载都能够判断准确烘干状态，保障了干衣机任意负载的烘干效果。
所述所有负载在烘干状态下时间t与温度T1的对应关系为二次函数关系，符合T1＝at2+bt+c，其中a、b、c为常数。所述a、b、c与干衣机的最大负载或容量、加热功率、风速和温控系统相对应。即每一种机型对应一组a、b、c，每个机型设有一种二次函数的对应关系。
经大量研究实验研究，对不同量的衣物(如0.5，1，2，4，6kg的衣物)进行了烘干测试，得到如图2所示的烘干过程温度曲线，把不同重量衣物烘干时的温度值在上图标识出来并连成一条曲线，该曲线为二次函数，该二次函数还覆盖了没有检测的衣物的量烘干时的时间与温度的对应关系，因此该二次函数曲线包含了所有负载在烘干状态下时间与温度的对应关系，只要衣物的烘干过程温度曲线与该二次函数相交即为衣物烘干，也就是当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干，该种判断方法实现了连续负载的定量判断，对任何负载都能够判断准确烘干状态，保障了干衣机任意负载的烘干效果。
干衣机通过实验测试得到所述二次函数的曲线公式，将该曲线公式存储到干衣机主控板内，烘干过程中直接调取该曲线公式，当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干。
在干衣机出厂前，对该型号的干衣机通过实验测试至少三个负载烘干时的时间t和筒内温度T1，根据该三组时间t和筒内温度T1确定二次函数曲线公式。当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干。
干衣机通过实验测试多个负载烘干时的时间t和筒内温度T1，根据该多组时间t和筒内温度T1连成一平滑曲线，该平滑曲线为二次函数曲线，该二次函数曲线包含了所有负载在烘干状态下时间与温度的对应关系，只要衣物的烘干过程温度曲线与该二次函数相交即为衣物烘干，也就是当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干，确定该二次函数曲线公式，存储到干衣机主控板内，烘干过程中直接调取该曲线公式，当筒内温度大于等于该时间对应的该二次函数曲线上的温度时，可判断内部衣物烘干。
所述干衣机滚筒出风口设置温度传感器，实时检测检测筒内温度。优选干衣机滚筒出风口设置NTC(热敏电阻)。
二次函数随着环境温度的不同出现在坐标系中的不同位置，经测试c值与T3的0.9倍成线性关系。随着环境温度的不同，对c值进行修正，在烘干开始时测量环境温度，记环境温度为T3，则：c＝72-T3*0.9。经过修正的二次函数更准确，更能准确的得到不同重量衣物的准确烘干结束点。
本发明所述一种使用上述判断方法的干衣机，干衣机滚筒出风口设置温度传感器，实时检测检测筒内温度，在干衣机出厂前，对该型号的干衣机通过实验测试得到所有负载在烘干状态下时间t与温度T1的对应关系为二次函数曲线公式，将该曲线公式存储到干衣机主控板内，烘干过程中干衣机实时检测筒内温度值T2，直接调取该曲线公式，并与设定的该时间对应的温度值T1进行比较；当实时检测温度值T2大于等于设定的该时间对应的温度值T1时，判断桶内衣物烘干。可通过对该型号的干衣机通过实验测试三个负载烘干时的时间t和筒内温度T1，根据该三组时间t和筒内温度T1确定二次函数曲线公式。
实施例一
本发明所述一款6kg烘干容量的直排式干衣机，额定电压220V/50Hz，加热功率1800W，控制排气温度不超过60摄氏度，进气温度不超过120摄氏度，设计最大风量150立方米每小时，通过测试得出二次函数T1＝at2+bt+c，其中a＝0.0009，b＝-0.2035，c＝50.0000，即通过测试得出二次函数T1＝0.0009t2+0.2035t+50.0000，0＜t≤110。
在烘干机主控板内预置这一公式，则可以达到不同重量衣物的准确烘干结束点。需要说明的，该公式中a，b，c常数是在环境温度20摄氏度时测试的，随着环境温度的不同，c值需要修正，在机器开始运转时测量环境温度，记环境温度为T3，则：c＝72-T3*0.9。c值这么计算的原因：二次函数随着环境温度的不同出现在坐标系中的不同位置，经测试c值与T3的0.9倍成线性关系。经过修正的二次函数更准确，更能准确的得到不同重量衣物的准确烘干结束点。
以上所述仅为本发明的优选实施方式，应当指出，对于本领域的普通技术人员而言，在不脱离本发明原理前提下，还可以做出多种变形和改进，这也应该视为本发明的保护范围。

Claims (10)

  1. 一种干衣机自动烘干判断方法，其特征在于：
    干衣机内设置所有负载在烘干状态下时间t与温度T1的对应关系；
    烘干过程中干衣机实时检测筒内温度值T2，并与设定的该时间对应的温度值T1进行比较；
    当实时检测温度值T2大于等于设定的该时间对应的温度值T1时，判断桶内衣物烘干。
  2. 根据权利要求1所述的一种干衣机自动烘干判断方法，其特征在于：所述所有负载在烘干状态下时间t与温度T1的对应关系为二次函数关系。
  3. 根据权利要求2所述的一种干衣机自动烘干判断方法，其特征在于：所述二次函数为一开口向上的二次函数，所述所有负载在烘干状态下时间t与温度T1的对应关系曲线为二次函数顶点的左侧部分。
  4. 根据权利要求1-3任一所述的一种干衣机自动烘干判断方法，其特征在于：干衣机通过实验测试得到所述所有负载在烘干状态下时间t与温度T1的对应关系公式，将该公式存储到干衣机主控板内，烘干过程中直接调取该公式。
  5. 根据权利要求1-4任一所述的一种干衣机自动烘干判断方法，其特征在于：干衣机通过实验测试多个负载烘干时的时间t和筒内温度T1，根据该多组时间t和筒内温度T1连成一平滑曲线，该平滑曲线为二次函数曲线，确定该二次函数曲线公式。
  6. 根据权利要求2或3所述的一种干衣机自动烘干判断方法，其特征在于：干衣机通过实验测试至少三个负载烘干时的时间t和筒内温度T1，根据该三组时间t和筒内温度T1确定二次函数曲线公式。
  7. 根据权利要求1-6任一所述的一种干衣机自动烘干判断方法，其特征在于：所述干衣机滚筒出风口设置温度传感器，实时检测筒内温度。
  8. 根据权利要求1-7任一所述的一种干衣机自动烘干判断方法，其特征在于：所有负载在烘干状态下时间t与温度T1的对应关系为：T1＝at2+bt+c，其中a、b、c为常数。
  9. 根据权利要求8所述的一种干衣机自动烘干判断方法，其特征在于：随着环境温度的不同，对c值进行修正，在烘干开始时测量环境温度，记环境温度为T3，则：c＝72-T3*0.9。
  10. 一种具有权利要求1-9任一所述方法的干衣机。
PCT/CN2016/079410 2015-05-27 2016-04-15 一种干衣机自动烘干判断方法及干衣机 Ceased WO2016188265A1 (zh)

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