CN-120099772-B - Clothes dryer

CN120099772BCN 120099772 BCN120099772 BCN 120099772BCN-120099772-B

Abstract

The embodiment of the application provides a clothes dryer which comprises a box body, a drying barrel, an air circulation system, an air inlet assembly, an air exhaust assembly, a heater, an air inlet pipeline, an air flowmeter, a filter screen, an air exhaust pipeline, an air exhaust fan, an air exhaust motor, a fan, a controller, a clothes dryer filter screen detection program, and a controller, wherein the controller is respectively connected with the air flowmeter and the air exhaust motor and used for executing the clothes dryer filter screen detection program. The application can improve the accuracy of the cleaning detection of the filter screen.

Inventors

LIU XIAOYUAN
Pi Jinxiong
LIU XUEQING
BI QINGTANG
YU YAMENG
Hua Zhengpeng

Assignees

海信冰箱有限公司

Dates

Publication Date: 20260508
Application Date: 20231206

Claims (9)

1. A clothes dryer, comprising: A case; the drying barrel and the air circulation system are arranged in the box body; The air circulation system comprises an air inlet assembly and an air exhaust assembly, wherein the air inlet assembly comprises a heater and an air inlet pipeline, and is used for enabling heated air to enter the drying barrel so as to perform heat exchange with clothes in the drying barrel, and an air flowmeter is further arranged in the air inlet pipeline; The controller is respectively and electrically connected with the air flow meter and the exhaust motor and is used for executing a clothes dryer filter screen detection program, and the clothes dryer filter screen detection program comprises the following steps: controlling the exhaust motor to reach a preset rotating speed, and keeping the preset rotating speed to run; detecting a current value of the exhaust motor in the process of keeping the preset rotating speed to operate, and judging whether the filter screen is blocked or not based on the current value; And/or, acquiring a current flow value of the air flow meter and a historical flow value acquired in the process of executing the clothes dryer filter screen detection program in a historical manner, and judging whether the filter screen is blocked or not based on the current flow value and the historical flow value; if at least one of the above is judged to be yes, determining that the filter screen is blocked; In the dryer screen detection program, the step of judging whether the screen is clogged based on the current value includes: If the current value reaches above a preset current value, determining that the filter screen is blocked, wherein the preset current value represents the maximum current value of the exhaust motor when the filter screen is blocked; if the current value is below the preset current value, determining that the filter screen is not blocked; In the dryer screen detection program, the step of judging whether the screen is clogged based on the current flow value and the historical flow value includes: calculating a difference between the current flow value and the flow value recorded by the last program execution; if the difference value is below a preset value, determining that the filter screen is blocked, wherein the preset value represents the minimum air inlet quantity when the filter screen is blocked; and if the difference value reaches above the preset value, determining that the filter screen is not blocked.
2. The clothes dryer of claim 1, wherein the clothes dryer screen detection program further includes the steps of: judging whether the filter screen is blocked or not through the current value, and judging whether the filter screen is blocked or not based on the current flow value and the historical flow value under the condition that the filter screen is not blocked.
3. The clothes dryer of claim 1 or 2, wherein the preset value is a positive number.
4. The clothes dryer of claim 3 wherein the step of determining whether the filter screen is clogged based on the current flow value and the historical flow value further comprises: And if the difference value is a negative value, determining that the filter screen is not blocked.
5. The clothes dryer of claim 1, wherein the clothes dryer screen detection program further includes the steps of: Judging whether a door body of the clothes dryer is closed or not when a starting instruction of a clothes dryer filter screen detection program is detected; And if so, controlling the filter screen detection indicator lamp to display a detection state, and executing the steps of controlling the exhaust motor to reach a preset rotating speed and keeping the preset rotating speed to operate.
6. The clothes dryer of claim 5, wherein the clothes dryer screen detection program further includes the steps of: And under the condition that the filter screen is not blocked, controlling the filter screen detection indicator lamp to display an end state, and controlling the exhaust motor to stop running.
7. The clothes dryer of claim 5, wherein the clothes dryer screen detection program further includes the steps of: And under the condition that the filter screen is blocked, controlling the filter screen detection indicator lamp to display a prompt state.
8. The clothes dryer of claim 1, wherein the controller further performs the steps of: If the drying program is detected to be finished, the clothes dryer door body is opened and then closed, and then a filter screen detection candidate state is entered after waiting for a preset time period; and detecting the temperature value of the heater in the candidate state of detection of the filter screen, and starting to execute the detection program of the filter screen of the clothes dryer when the temperature value is below a preset temperature value.
9. The clothes dryer of claim 1, wherein the controller further performs the steps of: before starting to execute the detection program of the clothes dryer filter screen, judging whether the program execution corresponds to the first detection after the filter screen is cleaned; If yes, judging whether the filter screen is blocked or not only based on the current value in the process of executing the filter screen detection program of the clothes dryer, and recording the air flow value of the exhaust motor in the process of keeping the preset rotating speed to operate; If not, the clothes dryer filter screen detection program is normally executed.

Description

Clothes dryer Technical Field The application relates to the technical field of clothes dryers, in particular to a clothes dryer. Background A dryer is a drying apparatus capable of drying wet laundry. During the operation of the dryer, the heater at the front end of the air inlet duct heats air and then sucks the air into the drying tub through the air inlet duct, so that the wet laundry exchanges heat with the high-temperature dry air in the drying tub. The air after heat exchange often wraps up the residual flock or fine impurity dust in the dried clothes, and the air can stay on the filter screen after passing through the filter screen, so that the filter screen is easy to be blocked. Once the filter screen is blocked, the normal operation of the clothes dryer is affected, and the drying effect of the final clothes is affected, so that it is extremely important to ensure that the filter screen is not blocked, but the detection accuracy of whether the filter screen is blocked is not good at present. Accordingly, there is a great need for a clothes dryer capable of precisely detecting whether a filter screen is clogged. Disclosure of Invention In order to solve the technical problems described above, embodiments of the present application provide a clothes dryer. According to one aspect of the embodiment of the application, the embodiment of the application provides a clothes dryer, which comprises a box body, a drying barrel and an air circulation system, wherein the drying barrel and the air circulation system are arranged in the box body, the air circulation system comprises an air inlet assembly and an air exhaust assembly, the air inlet assembly comprises a heater and an air inlet pipeline, the heater and the air inlet pipeline are used for enabling heated air to enter the drying barrel to exchange heat with clothes in the drying barrel, an air flowmeter is further arranged in the air inlet pipeline, the air exhaust assembly comprises a filter screen, an air exhaust pipeline and an air exhaust fan, the air after heat exchange is discharged from the air exhaust pipeline after passing through the filter screen under the action of the air exhaust fan, the air exhaust fan comprises an air exhaust motor and a fan, the controller is respectively and electrically connected with the air flowmeter and the air exhaust motor, and used for executing a filter screen detection program, the filter screen detection program comprises the steps of controlling the air exhaust motor to reach a preset rotating speed and keeping the preset rotating speed, detecting a current value of the air exhaust motor in a process of keeping the preset rotating speed, judging whether the current value of the air flow is blocked value and/or not is obtained in a process of keeping the preset rotating speed, and judging whether the current value is obtained or not, and whether a current value is obtained is at least a current value is judged to be equal to a current value or a current value. In the embodiment, whether the filter screen is blocked or not can be accurately judged by detecting the current value of the exhaust motor in the process of keeping the preset rotating speed to operate and based on the current value, and whether the filter screen is blocked or not can also be accurately judged according to the current flow value acquired by the air flowmeter and the historical flow value acquired in the process of historically executing the clothes dryer filter screen detection program, and if at least one judgment exists in the two judgments, the filter screen can be accurately determined to be blocked, and the filter screen needs to be cleaned. In one embodiment of the present application, based on the foregoing, the clothes dryer screen detection program further includes the steps of determining whether the screen is clogged by the current value, determining whether the screen is clogged based on the current flow value and the historical flow value if the current flow value and the historical flow value are not determined, and determining that the screen is not clogged if the current flow value and the historical flow value are not determined to be clogged. In the above embodiment, whether the filter screen is blocked is firstly determined by the current value of the exhaust motor in the process of keeping the preset rotation speed, and then, the second determination of whether the filter screen is blocked is performed based on the current flow value and the historical flow value measured by the air flow meter under the condition that the filter screen is not blocked for the first time, and only if the second determination is not the same, the filter screen is finally determined to be not blocked, and whether the filter screen is blocked is accurately determined through continuous two determinations. In one embodiment of the present application, based on the foregoing scheme, in the dryer screen detection program, the step of de