CN111593530A - Control method of washing machine and washing machine - Google Patents

Abstract

The invention relates to the technical field of washing machines, and discloses a control method of a washing machine and the washing machine. A temperature measuring device is arranged on the washing machine to detect the water temperature in the inner tub of the washing machine, and an air pressure detection device is also arranged on the washing machine to detect The air pressure in the inner tub of the washing machine, and the control method of the washing machine includes the steps of: heating the water in the inner tub of the washing machine, and detecting the water temperature in the inner tub, when the temperature of the water in the inner tub detected by the temperature measuring device reaches a preset scalding When the temperature and/or the air pressure change amount in the inner tub reaches the preset air pressure change amount within a preset unit time, the current temperature of the washing machine reaches the target heating temperature. The heating process of the washing machine is protected by double protection, preventing the risk of dry burning due to the failure to reach the target heating temperature for a long time in high altitude areas, and realizing the sterilization and disinfection of clothes. The washing machine disclosed by the invention realizes the sterilization and disinfection of clothes and avoids the risk of dry burning.

Description

Control method of a washing machine and washing machine

technical field

The invention relates to the technical field of washing machines, in particular to a control method of a washing machine and a washing machine.

Background technique

At present, as consumers have more and more requirements for laundry sterilization and disinfection, washing machines with heating and ironing have also become a trend. The existing washing machine only relies on the temperature measuring device to detect the water temperature in the inner tub of the washing machine. Since the boiling point is different in different regions, if only the temperature measuring device is used to detect the water temperature in the inner tub of the washing machine in high altitude areas, when the preset temperature is higher than the boiling point temperature. When the detected water temperature does not reach the preset temperature, the washing machine will keep heating, which is prone to the risk of dry burning. For the stability and safety of the whole machine, some scalding programs will not set the temperature too high. If the preset temperature is lower than the boiling point temperature, the clothes cannot be steam scalded, and thus the sterilization and disinfection of the clothes cannot be realized. Therefore, there is an urgent need to design a control method for a washing machine, which can not only achieve sterilization and disinfection of clothes, but also prevent the risk of dry burning of the washing machine.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a control method of a washing machine and a washing machine, which can not only sterilize and disinfect clothes, but also prevent the risk of dry burning in the washing machine.

For this purpose, the present invention adopts the following technical solutions:

The invention provides a control method of a washing machine. A temperature measuring device is arranged on the washing machine to detect the water temperature in the inner tub of the washing machine, and an air pressure detection device is further arranged on the washing machine to detect the air pressure in the inner tub of the washing machine. The control method of the washing machine includes the steps:

The water in the inner tub of the washing machine is heated, and the water temperature and air pressure in the inner tub are detected. When the temperature of the water in the inner tub detected by the temperature measuring device reaches the preset scalding temperature and/or the water in the inner tub reaches the preset scalding temperature and/or within the preset unit time. When the air pressure change amount reaches the preset air pressure change amount, the current temperature of the washing machine reaches the target heating temperature.

The control method of the washing machine is to heat the water in the inner tub of the washing machine, when the temperature measuring device detects that the water temperature in the inner tub reaches the preset scalding temperature and/or the air pressure change in the inner tub reaches the preset temperature within the preset unit time. If the air pressure change amount is set, the current temperature of the washing machine reaches the target heating temperature, which can protect the heating process of the washing machine through double protection, and prevent the risk of dry burning due to failure to reach the target heating temperature for a long time in high-altitude areas. The purpose of sterilization and disinfection.

As a preferred solution of the above-mentioned control method of the washing machine, the range of the preset scalding temperature T is 90°C≤T≤100°C. This temperature range can not only ensure that the washing machine achieves the purpose of steam scalding, but also avoid dry burning of the washing machine.

As a preferred solution of the above-mentioned control method of the washing machine, the preset scalding temperature T is 95°C.

As a preferred solution of the above-mentioned control method for a washing machine, when the washing machine reaches the target heating temperature, the water in the inner tub continues to be heated for a preset period of time and then stops heating. When the washing machine reaches the target heating temperature, the water in the inner tub continues to be heated for a preset period of time and then the heating is stopped, which can better achieve steam scalding of the clothes.

As a preferred solution of the above-mentioned control method for a washing machine, when the washing machine reaches the target heating temperature, the heating is stopped.

As a preferred solution of the above-mentioned control method of the washing machine, the air pressure detection device is electrically connected to the control device of the washing machine, and the air pressure detection device transmits the detected air pressure signal in the inner tub to the control device and stores it, The control device determines whether the change in air pressure in the inner cylinder reaches a preset change in air pressure within a preset unit time.

The present invention also provides a washing machine, which is characterized in that the above-mentioned control method of the washing machine is used for control, a temperature measuring device is arranged in the inner drum of the washing machine, and an air pressure detection device communicated with the inner drum of the washing machine is arranged on the washing machine. , the temperature measurement device and the air pressure detection device are both electrically connected to the control device of the washing machine. The washing machine protects the heating process through the temperature measuring device and the air pressure detecting device, which not only realizes the steam scalding of the clothes, but also avoids the phenomenon of dry burning of the washing machine.

As a preferred solution of the above washing machine, the air pressure detection device is an air pressure sensor, and the air pressure sensor is arranged at the opening of the inner tub. By arranging the air pressure sensor at the opening of the inner cylinder, the air pressure in the inner cylinder can be easily detected.

As a preferred solution of the above washing machine, the air pressure sensor is arranged on the inner wall of the cover of the washing machine and communicates with the opening of the inner tub. This setting facilitates the installation and fixation of the air pressure sensor.

As a preferred solution of the above washing machine, the air pressure detection device is communicated with the inner tub through a pipeline. The air pressure detection device is communicated with the inner cylinder through a pipeline, and can detect the air pressure in the inner cylinder through the transmission of the pipeline.

Beneficial effects of the present invention:

The control method of the washing machine proposed by the present invention heats the water in the inner tub of the washing machine, and when the temperature measuring device detects that the water temperature in the inner tub reaches the preset scalding temperature and/or the air pressure in the inner tub changes within a preset unit time If the air pressure reaches the preset air pressure change amount, the current temperature of the washing machine reaches the target heating temperature, which can protect the heating process of the washing machine through double protection, and prevent the risk of dry burning due to failure to reach the target heating temperature for a long time in high altitude areas. For the purpose of sterilizing and disinfecting clothing.

In the washing machine proposed by the present invention, a temperature measuring device is arranged in the inner drum of the washing machine, and an air pressure detection device connected to the inner drum is arranged on the washing machine. Steam scalding, and can avoid the phenomenon of dry burning in the washing machine.

Description of drawings

1 is a flowchart of a method for controlling a washing machine according to Embodiment 1 of the present invention;

FIG. 2 is a flowchart of a control method for a washing machine provided in Embodiment 2 of the present invention.

Detailed ways

The technical solutions of the present invention are further described below with reference to the accompanying drawings and through specific embodiments.

Embodiment 1:

The washing machine achieves sterilization and disinfection of clothes by heating the water in the inner tub to a certain temperature. Usually, the temperature of the water detected by the temperature measuring device is different in different regions. If the preset temperature is too high in high-altitude regions , so that the boiling point is lower than the preset temperature, then the water in the washing machine will continue to be heated because it cannot reach the preset preset temperature, which is prone to dry burning; if the preset temperature is too low, so that the boiling point is higher than the target temperature, then The water in the washing machine will not be able to reach the boiling point, and thus will not be able to sterilize the clothes optimally. Therefore, in view of the above problems, the present embodiment provides a control method for a washing machine. A temperature measuring device is provided on the washing machine to detect the water temperature in the inner tub of the washing machine, and an air pressure detection device is also provided on the washing machine to detect the air pressure in the inner tub of the washing machine. , as shown in Figure 1, the control method of the washing machine includes the steps:

S11. Heating the water in the inner tub of the washing machine, and detecting the water temperature and air pressure in the inner tub.

S12. When the temperature of the water in the inner tub detected by the temperature measuring device reaches the preset scalding temperature and/or the air pressure change in the inner tub reaches the preset air pressure change within a preset unit time, the current temperature of the washing machine reaches the target heating temperature .

When the water temperature in the inner tub reaches the preset scalding temperature, the clothes can be ironed; when the air pressure detection device is within a preset unit time, the air pressure change in the inner tub reaches the preset air pressure change, and the clothes can also be scalded. scalding.

Specifically, when the water in the inner cylinder boils, a large amount of steam will be generated. At this time, within a preset unit time, the air pressure change in the inner cylinder will change significantly. By detecting whether the air pressure change in the inner cylinder changes within the preset unit time When the preset air pressure change is reached, it can be detected whether the water in the inner cylinder is boiling. Therefore, as long as the temperature of the water in the inner cylinder detected by the temperature measuring device reaches the preset scalding temperature, or the air pressure detection device detects whether the change in air pressure reaches the preset air pressure change within a preset unit time, or the temperature in the inner cylinder detected by the temperature measuring device When the water temperature reaches the preset scalding temperature, and the air pressure detection device detects whether the change in air pressure reaches the preset air pressure change amount within a preset unit time, it indicates that the current temperature of the washing machine reaches the target heating temperature.

The control method of the washing machine is to heat the water in the inner tub of the washing machine, when the temperature measuring device detects that the water temperature in the inner tub reaches the preset scalding temperature and/or the air pressure change in the inner tub reaches the preset air pressure within a preset unit time When the amount of change is changed, the current temperature of the washing machine reaches the target heating temperature, which can protect the heating process of the washing machine through double protection, prevent the risk of dry burning due to the failure to reach the target heating temperature for a long time in high altitude areas, and realize the protection of clothes. The purpose of sterilization and disinfection.

Embodiment 2:

This embodiment provides a method for controlling a washing machine. This embodiment is a further improvement on the basis of Embodiment 1. In this embodiment, a temperature measuring device and an air pressure detecting device are provided on the washing machine. The temperature device is a temperature sensor, and the air pressure detection device is an air pressure sensor. As shown in Figure 2, the control method of the washing machine includes the following steps:

S21 , heating the water in the inner tub of the washing machine, and detecting the water temperature and air pressure in the inner tub.

S22, judging whether the temperature of the water in the inner cylinder detected by the temperature measuring device reaches the preset scalding temperature and/or the air pressure change in the inner cylinder reaches the preset air pressure change within a preset unit time.

In this embodiment, the range of the preset scalding temperature T is 90°C≤T≤100°C, for example, the preset scalding temperature T may be 90°C, 92°C, 95°C, 97°C, 100°C, and the like. Under normal circumstances, when the temperature of the water in the inner cylinder is higher than 80°C, the clothes can be ironed and washed, and then the sterilization and disinfection of the clothes can be realized. The preset scalding temperature T satisfies the temperature range of 90°C≤T≤100°C, which can effectively realize the sterilization and disinfection of the clothes. Preferably, the preset scalding temperature T is 95° C., and the preset scalding temperature T can ensure a good effect of steam scalding on the clothes.

The air pressure detection device is electrically connected with the control device of the washing machine, the air pressure detection device transmits the detected air pressure signal in the inner tub to the control device and stores it, and the control device judges whether the air pressure change in the inner tub reaches the preset value within a preset unit time. The amount of air pressure change, thereby detecting whether the water in the inner tub is boiling, preventing the washing machine from drying out.

S23. If yes, the current temperature of the washing machine reaches the target heating temperature, and the water in the inner tub continues to be heated.

If not, the washing machine continues to determine whether the current temperature of the washing machine reaches the target heating temperature.

When the preset scalding temperature of the washing machine is higher than the boiling point of the water in the area where the washing machine is located, when the heating temperature of the washing machine reaches the boiling point temperature, the water in the inner tub boils to generate a lot of steam, and the air pressure of the inner tub increases instantly, and the air pressure detection device detects The air pressure change amount in the inner cylinder reaches the preset air pressure change amount within the preset unit time, and the temperature is the target temperature for heating.

When the preset scalding temperature of the washing machine is lower than the boiling point of the water in the area where the washing machine is located, and when the heating temperature of the washing machine reaches the preset scalding temperature, the temperature measuring device detects that the temperature in the inner tub reaches the preset scalding temperature, then the temperature is the target temperature for heating.

When the preset scalding temperature of the washing machine is equal to the boiling point temperature of the area where the washing machine is located, the heating temperature of the washing machine is preset scalding temperature, the temperature measuring device detects that the temperature in the inner tub reaches the preset scalding temperature, and the air pressure sensor first detects that the When the air pressure change amount in the inner cylinder reaches the preset air pressure change amount within the preset unit time, the temperature is the target temperature for heating.

S24. Determine whether the heating time period reaches a preset heating time period.

S25. If yes, the washing machine stops heating the water in the inner tub.

If not, the washing machine continues to heat the water in the inner tub.

When the washing machine reaches the target heating temperature, it continues to heat the water in the inner tub, so that the water in the inner tub is evaporated to generate a large amount of steam, so as to realize the steam scalding of the clothes. Continue to heat the water in the inner cylinder for a preset period of time and then stop heating. Specifically, after the washing machine reaches the target heating temperature, the preset time period for continued heating can be 2min, 5min, 7min, or 10min, etc. The specific preset time period for continued heating can be set as required.

It is also possible to immediately stop heating the water in the inner tub when the washing machine reaches the target heating temperature. Since the water is heated to the target heating temperature, the water has been heated for a period of time, which plays a certain role in sterilization and disinfection.

Embodiment three:

The present invention also provides a washing machine, which is controlled by the control method of the washing machine in the first embodiment or the second embodiment. A temperature measuring device is arranged in the inner tub of the washing machine, and an air pressure detection device that communicates with the inner tub of the washing machine is arranged on the washing machine. The device, the temperature measuring device and the air pressure detecting device are all electrically connected with the control device of the washing machine. The washing machine protects the heating process through the temperature measuring device and the air pressure detecting device, which not only realizes the steam scalding of the clothes, but also avoids the phenomenon of dry burning of the washing machine.

In this embodiment, the temperature measuring device is a temperature sensor, and the air pressure detecting device is an air pressure sensor. The air pressure sensor is arranged at the opening of the inner cylinder. By arranging the air pressure sensor at the opening of the inner cylinder, the air pressure in the inner cylinder can be easily detected. The air pressure sensor is arranged on the inner wall of the cover body of the washing machine and communicates with the opening of the inner tub. This setting facilitates the installation and fixation of the air pressure sensor.

The washing machine can be a pulsator washing machine or a drum washing machine. When the washing machine is a pulsator washing machine, the air pressure sensor is arranged on the inner wall of the outer tub cover. Since the steam in the inner tub flows upward, the air pressure sensor is arranged on the inner wall of the outer tub lid, which is easy to realize the air pressure sensor in the inner tub. Air pressure detection. When the washing machine is a drum washing machine, the air pressure sensor is arranged on the upper part of the inner wall of the door body, and since the hot steam flows upward, it is easy to realize the detection of the air pressure.

The air pressure detection device can also be communicated with the inner cylinder through a pipeline. The air pressure detection device is communicated with the inner cylinder through a pipeline, and can detect the air pressure of the steam in the inner cylinder through the transmission of the pipeline. The position of the air pressure detection device can be set as required, which is not specifically limited here.

Note that the above are only preferred embodiments of the present invention. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. A control method of a washing machine is characterized in that an air pressure detection device is further arranged on the washing machine and used for detecting air pressure in an inner barrel of the washing machine, and the control method of the washing machine comprises the following steps:

heating water in an inner barrel of the washing machine, detecting water temperature and air pressure in the inner barrel, and when the water temperature in the inner barrel detected by the temperature measuring device reaches a preset scalding temperature and/or the air pressure variation in the inner barrel within a preset unit time reaches a preset air pressure variation, enabling the current temperature of the washing machine to reach a target heating temperature.

2. The control method of a washing machine as claimed in claim 1, wherein the preset scalding temperature T is in a range of 90 ° to T100 ℃.

3. The control method of a washing machine according to claim 2, wherein the preset scalding temperature T is 95 ℃.

4. The control method of a washing machine as claimed in any one of claims 1 to 3, wherein the heating is stopped after the water in the inner tub is continuously heated for a preset time period after the washing machine reaches the target heating temperature.

5. A control method of a washing machine according to any one of claims 1-3, characterized in that heating is stopped when the washing machine reaches the target heating temperature.

6. A control method of a washing machine according to any one of claims 1 to 3, wherein the air pressure detecting means is electrically connected to a control unit of the washing machine, the air pressure detecting means transmits and stores the detected air pressure signal in the inner tub to the control unit, and the control unit determines whether the amount of change in the air pressure in the inner tub reaches a preset amount of change in the air pressure within a preset unit time.

7. A washing machine is characterized by being controlled by the control method of the washing machine as claimed in any one of claims 1 to 6, a temperature measuring device is arranged in an inner cylinder of the washing machine, an air pressure detecting device communicated with the inner cylinder of the washing machine is arranged on the washing machine, and the temperature measuring device and the air pressure detecting device are both electrically connected with the control device of the washing machine.

8. The washing machine as claimed in claim 7, wherein the air pressure detecting device is provided at an opening of the inner tub.

9. The washing machine as claimed in claim 7, wherein the air pressure detecting device is provided at an inner wall of a cover of the washing machine and communicates with the opening of the inner tub.

10. The washing machine as claimed in claim 7, wherein the air pressure detecting device communicates with the inner tub through a pipe.

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