Dryer control method and dryer

Abstract

The present invention discloses a clothes dryer control method and the clothes dryer, the method comprising: during the forward rotation of the clothes dryer, obtaining water level data of a water tank, when the current water level is greater than or equal to a set low water level, starting a drainage pump until the water level is less than the set low water level and then delaying a first set time to shut down; during the reverse rotation of the clothes dryer, obtaining water level data of the water tank, when the current water level is greater than or equal to a set middle water level, starting the drainage pump; when the current water level is greater than or equal to the set low water level and less than the set middle water level, starting the drainage pump after a second set time delay; after starting the drainage pump, until the water level is less than the set low water level and then delaying a first set time to shut down; during the forward rotation, the low water level is set in combination with a delay of the first set time to ensure that the water during the forward rotation can be discharged from the water tank in a timely and thorough manner, and during the reverse rotation, the middle water level is set in combination with a delay of the second set time to ensure that the condensed water is fully refluxed and discharged, thereby solving the problem of water leakage at the bottom of the clothes dryer during drainage.

Description

Technical Field

[0001] The present invention belongs to the technical field of clothes drying, and in particular, relates to a clothes dryer control method and a clothes dryer. Background Art

[0002] The water level of the dryer is monitored by a float water level switch, which uses the buoyancy of water to trigger the switch and then control the operation of the drain pump.

[0003] The float water level switch generates a switch signal and has only one monitoring point. The signal is output only when the water reaches a certain monitoring point height. When the dryer is rotating forward, hot air is pumped into the barrel, causing most of the water to be sucked to the side away from the water level switch by the wind. This will result in: in fact, the water level has reached the monitoring point, but because the water level is tilted, the float water level switch cannot reach the monitoring point height. In this case, when the dryer is reversed, on the one hand, a large amount of water will flow back instantly, coupled with the water already in the sink (although this water level does not trigger the float switch, it has actually exceeded the monitoring point of the float water level switch), causing the water level to rise rapidly. When the float water level switch generates a signal and then controls the water pump, the water may have exceeded the highest water level, causing water leakage at the bottom of the machine, which is very likely to cause customer complaints. Summary of the invention

[0004] The object of the present invention is to provide a clothes dryer control method and a clothes dryer, so as to solve the technical problem that water leaks from the bottom of the machine during drainage of the existing clothes dryer.

[0005] The present invention is implemented by the following technical solutions:

[0006] A control method for a clothes dryer is proposed, wherein the clothes dryer comprises: a water tank for collecting condensed water generated during the drying process of the clothes dryer; and a drainage pump for extracting the condensed water in the water tank for discharge; the method comprises: during forward rotation of the clothes dryer, obtaining water level data of the water tank, and when the current water level is greater than or equal to a set low water level, starting the drainage pump until the water level is less than the set low water level and then delaying the first set time to shut down; during reverse rotation of the clothes dryer, obtaining water level data of the water tank, and when the current water level is greater than or equal to a set middle water level, starting the drainage pump; when the current water level is greater than or equal to the set low water level and less than the set middle water level, starting the drainage pump after a delay of a second set time; and starting the drainage pump until the water level is less than the set low water level and then delaying the first set time to shut down; wherein the water level data is obtained by a water level sensor arranged in the water tank.

[0007] Furthermore, before the forward rotation of the dryer ends and the reverse rotation is started, or when the dryer starts the reverse rotation, the method also includes: starting the drain pump and obtaining the water level data of the water tank; turning off the drain pump when the water level of the water tank is lower than the set low water level, otherwise, continuously starting the drain pump until the water level of the water tank is lower than the set low water level and then turning it off.

[0008] Furthermore, during the reverse rotation of the clothes dryer, the method further includes: when the current water level is greater than the set high water level, issuing an alarm message.

[0009] Furthermore, the method also includes: displaying current water level data.

[0010] A clothes dryer is proposed, comprising: a water tank for collecting condensed water generated during the drying process of the clothes dryer; a drain pump for extracting the condensed water in the water tank for discharge; and also comprising: a water level sensor arranged in the water tank for obtaining water level data in the water tank; a drain pump control module for: obtaining the water level data of the water tank during forward rotation of the clothes dryer, and starting the drain pump when the current water level is greater than or equal to a set low water level until the water level is less than the set low water level and then delays the first set time to shut down; obtaining the water level data of the water tank during reverse rotation of the clothes dryer, and starting the drain pump when the current water level is greater than or equal to a set middle water level; starting the drain pump after a second set time delay when the current water level is greater than or equal to the set low water level and less than the set middle water level; and shutting down after starting the drain pump until the water level is less than the set low water level and then delays the first set time to shut down.

[0011] Furthermore, the drain pump control module is also used to: start the drain pump and obtain the water level data of the water tank before the forward rotation of the dryer ends and the reverse rotation starts, or when the dryer starts the reverse rotation, and obtain the water level data of the water tank; turn off the drain pump when the water level of the water tank is lower than the set low water level, otherwise, continue to start the drain pump until the water level of the water tank is lower than the set low water level.

[0012] Furthermore, the clothes dryer further comprises: an alarm module, which is used to issue an alarm message when the current water level is greater than a set high water level during the reversal of the clothes dryer.

[0013] Furthermore, the clothes dryer also includes: a display module for displaying current water level data.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: in the clothes dryer control method and clothes dryer proposed in the present invention, a water level sensor is arranged in the water tank for collecting condensed water, and different drainage pump controls are respectively implemented according to the working process of the clothes dryer during the forward rotation period when hot air is pumped into the drum to dry clothes and during the reverse rotation period when clothes are spread flat to reduce wrinkles of clothes. During the forward rotation period, the set low water level is used as the drainage pump start condition to discharge condensed water from the water tank in time, and by delaying the first set time, the water is continuously drained when the water level in the water tank is lower than the set low water level, so as to avoid inaccurate water level detection caused by hot air blowing water to one side of the water tank, resulting in water not being effectively drained. The problem of the water outlet tank; during the reversal period, even if there is a phenomenon of condensed water backflow, the water in the tank can be discharged from the tank in time during the forward rotation, and the amount of condensed water backflow will not be much. However, the problem of condensed water backflow needs to be comprehensively considered, and the middle water level is set as the starting condition of the drain pump. When the water level is higher than the set middle water level, the drain pump is started immediately. When the water level is higher than the set low water level, it is delayed for a second time. After the condensed water has fully backflowed, the drain pump is started, and the water level is lower than the set low water level. After the first set time, the drain pump is stopped to ensure that all residual water is discharged from the tank, which solves the technical problem of bottom leakage of the dryer during drainage in the prior art.

[0015] Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A flow chart of the clothes dryer control method proposed by the present invention;

[0017] Figure 2 This is a functional architecture diagram of the clothes dryer proposed in the present invention. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0019] The clothes dryer control method proposed in the present invention is applied to a clothes dryer. Figure 2 As shown, it includes a water tank (not shown in the figure), a drain pump 1 and a water level sensor 2. The water tank is installed at the bottom of the dryer to collect condensed water generated during the drying process of the dryer. The drain pump 1 is used to extract the condensed water in the water tank to drain it; the water level sensor 2 is used to detect the water level in the water tank. In the present application, three water levels related to the control of the drain pump are set: a set low water level HL, a set middle water level HM and a set high water level HH. The water level sensor 2 is set to at least detect the set low water level HL, the set middle water level HM and the set high water level HH set in the present application.

[0020] Based on the above structure, the clothes dryer control method proposed by the present invention is as follows: Figure 1 As shown, the following steps are included:

[0021] Step S11: During the forward rotation of the dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set low water level, the drain pump is started until the water level is less than the set low water level and then shuts down after a first set time delay.

[0022] When the dryer rotates forward, hot air is drawn into the inner drum to dry the laundry in the inner drum. The hot water vapor condenses into condensed water in the water tank, and the water level sensor obtains the water level data in the water tank in real time.

[0023] During forward rotation, the present application sets the low water level HL as the starting condition of the drain pump 1 to achieve timely discharge of condensed water from the sink, and continues to drain water when the water level in the sink is lower than the set low water level HL by delaying the first set time, for example 10S, to avoid the problem of inaccurate water level detection caused by hot air blowing water to one side of the sink, resulting in the water not being effectively discharged from the sink.

[0024] Step S12: During the reversal of the dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set middle water level, the drain pump is started; when the current water level is greater than or equal to the set low water level and less than the set middle water level, the drain pump is started after a delay of a second set time; after starting the drain pump, it is turned off after a delay of a first set time until the water level is less than the set low water level.

[0025] The purpose of the dryer's reverse rotation is to break up and flatten the clothes dried during the forward rotation to avoid wrinkles caused by accumulation of clothes. During this period, since there is no hot air, the condensed water blown to the side of the sink by the hot air during the forward rotation will produce a backflow phenomenon.

[0026] Based on the execution of step S11 of the present invention, during the reversal period, even if there is a phenomenon of condensed water reflux, since the water in the sink can be discharged from the sink in time during the forward rotation, the amount of condensed water reflux will not be much. However, the problem of condensed water reflux needs to be comprehensively considered, and the middle water level HM is set as the starting condition of the drain pump 1. When the water level is higher than the set middle water level HM, the drain pump 1 is started immediately. When the water level is higher than the set low water level HL, it is delayed for a second time. After the condensed water has fully refluxed, the drain pump 1 is started. The drain pump works until the water level is lower than the set low water level HL, and then stops after the first set time is delayed to ensure that all residual water is discharged from the sink.

[0027] In the above-mentioned combination of steps S11 and S12, during the forward rotation of the dryer, the low water level HL is set as the starting condition of the drain pump, and the drain pump is controlled by delaying the first set time after the water level is lower than the set low water level HL, so as to ensure that the water during the forward rotation can be discharged from the sink in a timely and thorough manner. Even if there is a phenomenon of condensed water backflow, the backflowing condensed water will be discharged due to the delay of the first set time, so as to avoid the problem of water leakage caused by a large amount of backflow at the initial stage of reversal; during the reversal of the dryer, the middle water level HM is set as the starting condition of the drain pump. When the water level is higher than the set low water level HL but lower than the set middle water level HM, the second set time is delayed, and the drain pump is started after the possible condensed water has fully backflowed. Therefore, through the joint control during the forward rotation and the reversal period, the technical problem of bottom water leakage of the dryer during drainage in the prior art is solved.

[0028] In some embodiments of the present invention, before the forward rotation of the dryer ends and the reverse rotation is started, or when the dryer starts the reverse rotation, the following technical means are used to avoid the problem of a large amount of reflux water caused by the condensed water not being discharged in time due to misjudgment during the forward rotation, and to avoid water leakage during the reverse start: start the drain pump 1 and obtain the water level data of the water tank at the same time. If the water level data of the water tank is less than the set low water level HL, turn off the drain pump and then execute step S12. Otherwise, continue to start the drain pump 1 to drain the water until the water level of the water tank is lower than the set low water level HL.

[0029] In some embodiments of the present invention, during the reverse rotation of the dryer, if the current water level is greater than the set high water level HH, an alarm message is issued, and the alarm message can be implemented in the form of buzzer, display, light display, etc.

[0030] In some embodiments of the present invention, the current water level data is displayed on a display screen or a display interface of the clothes dryer so that the user can understand the drying degree in real time.

[0031] Based on the above-mentioned clothes dryer control method, the clothes dryer proposed by the present invention is as follows: Figure 2 As shown, it also includes a drain pump control module 3, which is either an independent control module, connected to the main controller of the dryer, and connected to the water level sensor 2 and the drain pump 1, or it is a part of the main controller of the dryer, and is used for: during the forward rotation of the dryer, obtaining the water level data of the water tank, when the current water level is greater than or equal to the set low water level, starting the drain pump until the water level is less than the set low water level and then shuts down after a delay of a first set time; during the reverse rotation of the dryer, obtaining the water level data of the water tank, when the current water level is greater than or equal to the set middle water level, starting the drain pump; when the current water level is greater than or equal to the set low water level and less than the set middle water level, starting the drain pump after a delay of a second set time; after starting the drain pump, shutting down after a delay of a first set time until the water level is less than the set low water level.

[0032] In some embodiments of the present invention, the drain pump control module 3 is also used to start the drain pump 1 and obtain the water level data of the sink before the forward rotation of the dryer ends and the reverse rotation is started, or when the dryer starts the reverse rotation, and to shut down the drain pump 1 when the water level data of the sink is less than the set low water level HL; when the water level data of the sink is greater than the set low water level HL, the drainage is continuously started until the water level of the sink is lower than the set low water level HL.

[0033] In some embodiments of the present invention, the clothes dryer further comprises an alarm module 4 for issuing an alarm message when the current water level is greater than a set high water level during the reverse rotation of the clothes dryer.

[0034] In some embodiments of the present invention, the clothes dryer further includes a display module 5 for displaying current water level data.

[0035] It should be pointed out that the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A clothes dryer control method, the clothes dryer comprising: A water tank, used to collect condensed water generated during the drying process of the clothes dryer; a drainage pump, used for extracting condensed water in the water tank for drainage; Characterized in that the method comprises: During the forward rotation of the clothes dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set low water level, the drainage pump is started until the water level is less than the set low water level and then turned off after a delay of a first set time; During the reversal of the dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set middle water level, the drain pump is started; when the current water level is greater than or equal to the set low water level and less than the set middle water level, the drain pump is started after a second set time delay; after starting the drain pump, the drain pump is turned off after the water level is less than the set low water level and the first set time delay; The water level data is obtained by a water level sensor arranged in the water tank.

2. The clothes dryer control method according to claim 1, characterized in that: Before the clothes dryer ends forward rotation and starts reverse rotation, or when the clothes dryer starts reverse rotation, the method further includes: Starting the drainage pump and obtaining water level data of the water tank; When the water level in the water tank is lower than the set low water level, the drainage pump is turned off; otherwise, the drainage pump is continuously started until the water level in the water tank is lower than the set low water level and then turned off.

3. The clothes dryer control method according to claim 1, characterized in that: During the reversal of the dryer, the method further comprises: When the current water level is greater than the set high water level, an alarm message is issued.

4. The clothes dryer control method according to claim 1, characterized in that: The method further comprises: Display current water level data.

5. A clothes dryer, comprising: A water tank, used to collect condensed water generated during the drying process of the clothes dryer; a drainage pump, used for extracting condensed water in the water tank for drainage; It is characterized by further comprising: A water level sensor is disposed in the water tank and is used to obtain water level data in the water tank; Drain pump control module for: During the forward rotation of the clothes dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set low water level, the drainage pump is started until the water level is less than the set low water level and then the pump is turned off after a delay of a first set time; During the reversal of the dryer, the water level data of the water tank is obtained, and when the current water level is greater than or equal to the set middle water level, the drain pump is started; when the current water level is greater than or equal to the set low water level and less than the set middle water level, the drain pump is started after a delay of a second set time; after starting the drain pump, it is turned off after the water level is less than the set low water level and the first set time is delayed.

6. The clothes dryer according to claim 5, characterized in that: The drainage pump control module is also used for: Before the dryer finishes forward rotation and starts reverse rotation, or when the dryer starts reverse rotation, start the drain pump and obtain the water level data of the water tank; when the water level of the water tank is lower than the set low water level, turn off the drain pump; otherwise, continue to start the drain pump until the water level of the water tank is lower than the set low water level.

7. The clothes dryer according to claim 5, characterized in that: The clothes dryer also includes: The alarm module is used to send out an alarm message when the current water level is greater than the set high water level during the reversal of the dryer.

8. The clothes dryer according to claim 5, characterized in that: The clothes dryer also includes: Display module, used to display current water level data.

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