WO2018188606A1

WO2018188606A1 - Method for determining drying of clothes, and clothes drying device

Info

Publication number: WO2018188606A1
Application number: PCT/CN2018/082636
Authority: WO
Inventors: 宋华诚; 许升; 单世强; 吕佩师
Original assignee: 青岛海尔洗衣机有限公司
Priority date: 2017-04-11
Filing date: 2018-04-11
Publication date: 2018-10-18
Also published as: CN108691181A; CN108691181B

Abstract

A method for determining the drying of clothes and a clothes drying device using the method for determining the drying of clothes. The method comprises: detecting temperatures of multiple points of clothes by using an infrared temperature detection module of a drum (110); calculating a difference between the temperature of each point and the temperature of a surrounding point (120); and when the difference corresponding to each of the multiple points meeting set requirements is less than a set threshold, determining that the clothes are dried (130).

Description

Method for judging clothes drying and drying equipment

Technical field

The present disclosure relates to the field of dry clothes equipment, for example, to a method of determining clothes drying and a clothes drying apparatus.

Background technique

With the continuous development of technology, the dryer is a device capable of drying clothes, and the application range is wider and wider. The related dryer is a method for detecting the dryness of the laundry by infrared rays during the drying of the laundry. During the heating process, the heating is stopped first, and the control drum is not operated, and then the drying of the laundry is judged by the temperature drop rate of the monitoring point. degree.

In order to better realize the judgment of the dryness of the clothes, a cold air structure is usually arranged in the dryer, and cold air is introduced into the cylinder through the cold air structure to speed up the temperature drop in the cylinder, so that the dry area and the non-dry area are There is a difference in temperature, and then it is judged whether the laundry is dry or not according to the magnitude of the temperature difference. However, on the one hand, the above-mentioned method requires an increase in the cold air structure, and the manufacturing cost increases. On the other hand, it is necessary to stop the operation of the drum during the detection, and the cold air is required to be cooled, resulting in an increase in the time and energy consumption of the entire drying process.

Summary of the invention

The present disclosure provides a method for determining the drying of laundry and a drying device, which solves the problem that the related drying device determines the increase in manufacturing cost when the laundry is dry and the time and energy consumption of the entire drying process increases.

A method for judging the drying of clothes, the infrared temperature detecting module in the drum is used to detect the temperature of the plurality of points of the laundry, and the difference between the temperature of each point and the temperature of the surrounding points is calculated, and when the plurality of points meet the setting requirements When the difference corresponding to the point is less than the set threshold, it is judged that the laundry has dried.

Optionally, the point that satisfies the setting requirement is a point that satisfies the set number or the set ratio.

Optionally, the infrared temperature detecting module performs temperature detection of the plurality of points on the laundry when the drum outlet temperature is not less than a preset temperature value.

Optionally, the preset temperature value is 50 ° C - 60 ° C.

Optionally, the calculating the difference between the temperature of each point and the temperature of the surrounding points is: calculating a difference between the temperature value of each point and the average value of the temperatures of the adjacent points.

Optionally, the calculating the difference between the temperature of each point and the temperature of the surrounding point is: calculating a difference between the temperature value of each point and the maximum value of the temperature of the adjacent point.

Optionally, the calculating the difference between the temperature of each point and the temperature of the surrounding points is: calculating a difference between the temperature value of each point and the minimum value of the temperature of the adjacent point.

Optionally, the infrared temperature detecting module is configured by combining a plurality of infrared temperature sensors in an M×N lattice, wherein both M and N are integers greater than 1.

Optionally, the plurality of points are arranged in a matrix array.

The present disclosure also provides a clothes drying apparatus including: a drum and a controller; wherein the drum includes an infrared temperature detecting module, and the infrared temperature detecting module is configured to perform temperature detection of a plurality of points on the laundry Sending a detection result to the controller; the controller is configured to calculate a difference between a temperature of each point and a temperature of a surrounding point according to the detection result, when a point of the plurality of points satisfying the setting requirement is satisfied When the corresponding difference is less than the set threshold, it is judged that the laundry has dried.

The method for determining the drying of the laundry of the present disclosure can be judged without stopping the operation of the drum, reducing the time and energy consumption of the drying process, and eliminating the cold air structure, thereby reducing the manufacturing cost.

DRAWINGS

1 is a flow chart of a method for determining drying of a laundry provided by an embodiment;

2 is a schematic diagram showing the positional arrangement of a plurality of points when temperature detection is performed on a plurality of points according to an embodiment;

FIG. 3 is a structural diagram of a clothes drying apparatus according to an embodiment.

detailed description

A method for determining drying of a laundry, as shown in FIG. 1, the method for determining drying of the laundry comprises the following steps:

In step 110, the laundry is subjected to temperature detection of a plurality of points.

Optionally, the laundry is subjected to temperature detection of a plurality of points by an infrared temperature detecting module located in a drum of the drying device. In this embodiment, the infrared temperature detecting module is a combination of a plurality of infrared temperature sensors in an M×N dot matrix, wherein M and N are integers greater than 1, that is, at least four infrared temperature sensors. (M, N are 2) combined, and the infrared temperature sensor is very small, so the infrared temperature detection module combined by the infrared temperature sensor is not too large, and can meet the installation space of the drying equipment. By the above-described plurality of infrared temperature sensors provided in the M x N dot matrix, temperature detection of a plurality of dots can be realized to obtain temperatures of a plurality of dots.

Optionally, the infrared temperature detecting module may be disposed on the front upper side of the drum.

Optionally, in consideration of the beginning of drying, since the laundry is just beginning to be dried and dried, the humidity is high, and it takes a period of time since the drying ends. Therefore, in the present embodiment, the infrared temperature detecting module is used for the purpose of saving energy. It will not start directly with the dry running. Only when the drum outlet temperature is not less than the preset temperature value, the infrared temperature detecting module will detect the temperature of the clothes at multiple points. In this embodiment, the temperature of the drum outlet is realized by other temperature detecting modules, for example, other detecting modules such as temperature sensors, and thus the structure thereof will not be described. After repeated tests, the preset temperature value may be selected from 50 ° C to 60 ° C, that is, when the drum outlet temperature reaches the preset temperature value, there may be cases where the laundry has dried, so the temperature at the drum outlet is not less than When the temperature value is preset, the infrared temperature detecting module starts temperature detection of the laundry at a plurality of points.

In step 120, the difference between the temperature of each point and the temperature of the surrounding points is calculated.

In this step, the plurality of points are arranged in a matrix array, and a plurality of points arranged in the matrix array can better judge whether the clothes have been dried.

After obtaining the temperatures of the plurality of points in step 110, it is necessary to calculate the difference between the temperature of each point and the temperature of the surrounding points. Alternatively, the above surrounding points refer to points adjacent to each point. Referring to FIG. 2, an infrared temperature detecting module composed of a plurality of infrared temperature sensors combined in a 4×4 dot matrix is taken as an example, and the infrared temperature detecting module performs temperature detection on 16 points. Taking one of the points A of the 16 points as an example, the above-mentioned surrounding points refer to the other 8 points adjacent to the point A.

Alternatively, the above calculation of the difference between the temperature of each point and the temperature of the surrounding points can be calculated in the following three ways:

1. Calculate the difference between the temperature value of each point and the average value of the temperature of the adjacent point, that is, calculate the average temperature value of other points according to the temperature of other points adjacent to point A, and then point A. The temperature is calculated from the difference between the average temperature values.

2. Calculate the difference between the temperature value of each point and the maximum value of the temperature of the adjacent point, that is, the maximum temperature value among the temperatures of the other points adjacent to the point A, and the difference between the temperature of the point A and the temperature of the point A.

3. Calculate the difference between the temperature value of each point and the minimum value of the temperature of the adjacent point, that is, the minimum temperature value among the temperatures of the other points adjacent to the point A, and the difference between the temperature of the point A and the temperature of the point A.

Through the above three methods, the difference between the temperature of each point and the temperature of the surrounding points is calculated, and then the laundry may be judged according to the difference corresponding to the obtained plurality of points. Optionally, refer to step 130. .

In step 130, when the difference corresponding to the point satisfying the setting requirement among the plurality of points is less than the set threshold, it is determined that the laundry has dried.

Optionally, the point that satisfies the setting requirement is a point that satisfies the set number or the set ratio. Because the thickness of the different parts of the clothing, the material is different, and the like, when the clothes are not dry, the speed of the water evaporation of each point of the clothing is inconsistent. The infrared temperature detecting module detects that the temperature values of the plurality of points are different. At this time, the difference of the difference between the plurality of points is large, and the difference corresponding to the plurality of points increases as the dryness of the clothes increases. The values will tend to be close, ie the difference in the magnitude of the difference corresponding to multiple points will decrease. Based on the above principle, in this step, a set threshold is set in advance, and the set threshold can be obtained through a large number of experiments, and then the difference corresponding to the plurality of points is compared with the set threshold, and multiple records are recorded. The difference corresponding to the point is greater than the number of points at which the threshold is set. When the number of points where the corresponding difference is greater than the set threshold is not less than the set number, the laundry is already dry. Optionally, the number of points corresponding to the difference value greater than the set threshold is calculated in proportion to the total number of points. When the ratio is not less than the set ratio, the laundry is already dry. In this embodiment, the number of the above settings is a number obtained after a large number of tests, and has different values according to the difference between the M value and the N value of the infrared temperature detecting module. Similarly, the above-mentioned set ratio is also a ratio obtained after a large number of tests, and can satisfy the requirements for judgment of clothes drying.

In the method for determining the drying of the laundry of the present embodiment, it is possible to judge whether or not the laundry is dry without stopping the operation of the drum, and since the drum and the cold air are not stopped, the drying process of the drying apparatus can be made shorter and the time is improved. Drying efficiency while reducing the energy consumption of drying equipment. In addition, the method for determining the drying of the laundry of the embodiment does not require the addition of a cold air structure, and the manufacturing cost of the drying device is reduced to some extent.

A clothes drying device comprising: a controller 10 and a drum 20; wherein the drum 20 includes an infrared temperature detecting module 22, and the infrared temperature detecting module 22 is configured to perform temperature detection of a plurality of points on the laundry to detect the result Sending to the controller 10; the controller 10 is configured to calculate a difference between the temperature of each point and the temperature of the surrounding point according to the detection result, and the difference corresponding to the point satisfying the setting requirement among the plurality of points is less than the set threshold When it is judged that the clothes have dried. The drying apparatus applies the above method for judging the drying of the laundry to judge whether the laundry has been dried, and has the advantages of short drying process time, high drying efficiency, and low energy consumption of the drying device.

Industrial applicability

The method for determining the drying of the laundry of the present disclosure can be judged without stopping the operation of the drum, reducing the time and energy consumption of the drying process, eliminating the cold air structure and reducing the manufacturing cost.

Claims

A method for judging drying of a laundry, comprising: performing temperature detection of a plurality of points on the laundry through an infrared temperature detecting module in the drum, and calculating a difference between a temperature of each point and a temperature of the surrounding point, when the plurality of points are When the difference corresponding to the point satisfying the setting requirement is less than the set threshold, it is judged that the laundry has dried.
The method of determining drying of a laundry according to claim 1, wherein the point that satisfies the setting requirement is a point that satisfies a set number or a set ratio.
The method of determining drying of a laundry according to claim 2, wherein the infrared temperature detecting module performs temperature detection of the plurality of points on the laundry when the temperature of the drum outlet is not less than a preset temperature value.
The method of determining drying of a laundry according to claim 3, wherein said preset temperature value is from 50 ° C to 60 ° C.
The method of determining drying of a laundry according to claim 1, wherein said calculating a difference between a temperature of each point and a temperature of a surrounding point is: calculating an average value of a temperature value of each point and a temperature of the adjacent point. The difference between the two.
The method of determining drying of a laundry according to claim 1, wherein said calculating a difference between a temperature of each point and a temperature of a surrounding point is: calculating a temperature value of each point and a maximum value of a temperature of the adjacent point. The difference between the two.
The method of determining drying of a laundry according to claim 1, wherein said calculating a difference between a temperature of each point and a temperature of a surrounding point is: calculating a minimum value of a temperature value of each point and a temperature of the adjacent point. The difference between the two.
The method for determining drying of a laundry according to any one of claims 2-7, wherein the infrared temperature detecting module is a combination of a plurality of infrared temperature sensors in an M×N lattice manner, wherein M and N are both An integer greater than one.
The method of determining drying of a laundry according to claim 8, wherein said plurality of dots are arranged in a matrix array.
A clothes drying device comprising: a drum and a controller; wherein the drum comprises an infrared temperature detecting module, the infrared temperature detecting module is configured to perform temperature detection of a plurality of points on the laundry, and the detecting result is Sending to the controller; the controller is configured to calculate a difference between a temperature of each point and a temperature of a surrounding point according to the detection result, when a difference corresponding to a point that meets the setting requirement among the plurality of points When the value is less than the set threshold, it is judged that the laundry has dried.