Control method for dehumidifier

Abstract

The invention discloses a control method for a dehumidifier. The control method comprises the following steps of detecting the water level of condensed water and judging whether the current water level of the condensed water reaches a preset maximum water level or not; if yes, controlling intermittent drainage, and obtaining a drainage frequency; judging whether the obtained drainage frequency reaches a preset frequency N or not; if yes, stopping draining, detecting the water level of the condensed water, and judging whether the current water level of the condensed water is not higher than a preset lowest water level or not; and if yes, judging that a drainage system is normal, and otherwise judging that the drainage system fails. According to the control method for the dehumidifier in anembodiment of the invention, the drainage fault can be accurately identified, the service life can be prolonged, the cost can be reduced, and the requirement for the installation space can be lowered.

Description

technical field [0001] The invention relates to the technical field of air dehumidification, in particular to a method for controlling a dehumidifier. Background technique [0002] The dehumidifier in the related art usually includes a water pump and a water level switch. The water level switch is used to detect the condensed water level, and then the water pump discharges the condensed water. The water pump starts and stops according to the signal of the water level switch. The water level switch mainly has two setting methods: [0003] One setting method is to set only one water level switch to detect the state of the condensed water level through a water level switch. When the condensed water level is at a high water level, the water pump starts to discharge the condensed water. When the condensed water level is at a low water level, the water pump stops. Stop discharging condensed water, but this method cannot accurately identify whether the drainage system is working no...

AI Technical Summary

Problems solved by technology

[0003] One setting method is to set only one water level switch to detect the state of the condensed water level through a water level switch. When the condensed water level is at a high water level, the water pump starts to discharge the condensed water. When the condensed water level is at a low water level, the water pump stops. Stop discharging condensed water, but this method cannot accurately identify whether the drainage system is working normally

For example, when the drainage pipeline is blocked and the condensed water in the water storage tank cannot be drained within the predetermined time, the working time of the water pump may exceed the predetermined time

Or, when the water level switch fails, the stop drainage signal cannot be transmitted to the water pump, which will also cause the water pump to work for a long time

The above two situations will cause the pump to work for too long, and the heat will be too large and damaged.

[0004] Another setting method is to set two water level switches, one is the high level water level switch and the other is not the low level water level switch, for example, when the high level water level switch is closed, the water pump starts to discharge the condensed water, when the low level water level switch is turned off, The water pump stops to stop discharging condensed water, and two water level switches are used to control the condensed water level in linkage and identify faults. This setting method requires the use of two water level switches, which is costly and requires a certain height difference of the water storage tank and sufficient space to install two water level switches

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