CN114151877A - Dehumidifier and drainage control method for dehumidifier - Google Patents
Dehumidifier and drainage control method for dehumidifier Download PDFInfo
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- CN114151877A CN114151877A CN202010930669.6A CN202010930669A CN114151877A CN 114151877 A CN114151877 A CN 114151877A CN 202010930669 A CN202010930669 A CN 202010930669A CN 114151877 A CN114151877 A CN 114151877A
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- water pump
- dehumidifier
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
- F24F2003/144—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only
- F24F2003/1446—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by dehumidification only by condensing
Abstract
The invention provides a dehumidifier and a drainage control method for the dehumidifier, wherein the drainage control method comprises the following steps: after receiving a conducting signal of the high-level sensor, starting the water pump; if the conduction signal of the low sensor is not received within a first preset time period for starting the water pump, the water pump is kept started, and the times that the conduction signal of the low sensor is not received while the water pump is started for the first preset time period are counted to obtain a first count; judging whether the water pump receives a conduction signal of the low-level sensor within a second preset time period after the first preset time period; the second preset time length is less than the first preset time length; and if the conduction signal of the low-level sensor is not received within a second preset time, closing the water pump, counting the times of closing the water pump because the conduction signal of the low-level sensor is not received to obtain a second count, and determining that the low-level sensor and/or the water pump breaks down under the condition that the sum of the first count and the second count reaches the preset times.
Description
Technical Field
The invention relates to the field of dehumidification, in particular to a dehumidifier and a drainage control method for the dehumidifier.
Background
In the prior art, a dehumidifier generally adopts the working principle that a fan pumps moist air into the dehumidifier, then a heat exchanger of the dehumidifier condenses moisture in the air into water drops and discharges the water drops to a water receiving tray, and the dried air is discharged. After the water in the water receiving tray exceeds the specified water level, the water in the water receiving tray is discharged outwards by the water pump.
At present, a drainage control logic for a dehumidifier is to control the on and off of a water pump through a float arranged in a water pan, specifically, a high level sensor and a low level sensor are arranged in the float, the high level sensor detects a high water level, and the low level sensor detects a low water level. When a conduction signal output by the high-level sensor is received, the water pump is started; and after receiving the conduction signal output by the low-level sensor, closing the water pump. And if the conduction signal of the low sensor is not received within a specified time after the water pump is started, determining that the dehumidifier breaks down and turning off the dehumidifier.
Under the drainage control logic, the anti-interference capability of the dehumidifier is poor, for example, when the environment humidity is high and the water pump drains water slowly, the dehumidifier is easy to stop working, and the user experience is influenced; and the reliability of the conclusion about the determined fault is also relatively low.
Disclosure of Invention
The invention aims to provide a drainage control method for a dehumidifier, which can improve the anti-interference capability of the dehumidifier during operation.
It is a further object of the present invention to minimize the duration of the pump-out of the dehumidifier water pump.
It is another further object of the invention to improve the reliability with respect to determining a conclusion of a dehumidifier failure.
In particular, the present invention provides a drainage control method for a dehumidifier, the dehumidifier including a water receiving tray for collecting drainage of the dehumidifier, a water pump for draining water from the water receiving tray, and a first water level detecting device for detecting a water level of the water receiving tray, the first water level detecting device including a high sensor for detecting a water level exceeding a first prescribed water level and a low sensor for detecting a water level lower than a second prescribed water level, the first prescribed water level being higher than the second prescribed water level, the drainage control method comprising:
after receiving a conducting signal of the high-level sensor, starting the water pump;
judging whether a conduction signal of the low-level sensor is received or not when the water pump is started within a first preset time;
if the conduction signal of the low sensor is not received within the first preset time, the water pump is kept started, and the times that the water pump is started for the first preset time and the conduction signal of the low sensor is not received are counted to obtain a first count;
judging whether the water pump receives a conduction signal of the low-level sensor within a second preset time period after the first preset time period; the second preset time length is less than the first preset time length;
if the conduction signal of the low sensor is not received within the second preset time, the water pump is turned off, the times of turning off of the water pump due to the fact that the conduction signal of the low sensor is not received are counted to obtain a second count, and the low sensor and/or the water pump are determined to be in fault under the condition that the sum of the first count and the second count is larger than or equal to the preset times.
Optionally, when the second count is obtained by counting and the sum of the first count and the second count is smaller than the preset number of times, the water pump is turned on again after a third preset time period, whether the conduction signal of the low sensor is received within the second preset time period after the water pump is turned on again is judged again, and the second count is accumulated until the conduction signal of the low sensor is received or the sum of the first count and the second count is greater than or equal to the preset number of times without receiving the conduction signal of the low sensor.
Optionally, the water pump is turned off and the first count and the second count are cleared when an on signal of the low sensor is received.
Optionally, the water pan includes a first water drainage tank, the water pump is used for the first water drainage tank to drain water outwards, and the first water level detection device is located in the first water drainage tank and is used for detecting the water level of the first water drainage tank.
Optionally, the dehumidifier further comprises a water tank, the water pan further comprises a second water drainage tank, the second water drainage tank is communicated with the water tank, the second water drainage tank and the first water drainage tank share a part of side wall, an overflow port is arranged on the part of side wall, the lowest point of the overflow port is higher than the first specified water level,
if the water level of the first water drainage tank is higher than the lowest point of the overflow port, the water in the first water drainage tank flows to the second water drainage tank and further flows to the water tank.
Optionally, the dehumidifier further includes a second water level detection device disposed in the water tank, and the drain control method further includes:
acquiring a water tank water level signal detected by the second water level detection device;
judging whether the water tank is full of water or not according to the water tank level signal;
and if the water tank is in a full water state, outputting a full water alarm signal to prompt a user that the water tank is full.
Optionally, when it is determined that the water pump and/or the low sensor are/is in fault, the dehumidifier is turned off and a fault alarm signal is output to prompt a user that the dehumidifier is in fault.
According to another aspect of the present invention, there is also provided a dehumidifier including:
the water receiving tray is used for collecting the drainage of the dehumidifier;
the water pump is used for discharging water outwards from the water receiving tray;
the first water level detection device is positioned in the water receiving tray and used for detecting the water level of the water receiving tray;
the controller comprises a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the controller is used for realizing the drainage control method for the dehumidifier.
Optionally, the first water level detection device comprises a guide part and a floater, the guide part is located in the water pan and used for guiding the floater, a low sensor and a high sensor are sequentially arranged on the guide part from low to high, and a magnet is arranged inside the floater;
the floater floats upwards along the guide piece under the action of water, and after the floater floats upwards to a first specified water level, the low-level sensor is conducted under the action of a magnetic field and sends a conducting signal; and after the floater floats to a second specified water level, the high-level sensor is conducted under the action of the magnetic field and sends a conducting signal.
Optionally, the guide member is a float guide post, and the float is sleeved on the float guide post.
In the invention, after receiving the conduction signal of the high-level sensor, the water pump is started, whether the conduction signal of the low-level sensor is received within a first preset time period after the water pump is started is judged, and if the conduction signal of the low-level sensor is not received, the judgment reason may be that the water inlet speed is high, the water discharge speed is low, or the water pump fails to discharge water, or the low-level sensor fails. And then, the water pump is kept on, and the times that the water pump is started for a first preset time and does not receive the conduction signal of the low-level sensor are counted to obtain a first count. And if the conduction signal of the low sensor is not received within a second preset time length for continuously starting the water pump, closing the water pump, and counting the times of closing the water pump because the conduction signal of the low sensor is not received to obtain a second count. And when the sum of the first count and the second count reaches a preset number, determining that the low sensor and/or the water pump is in fault. The second preset time is shorter than the first preset time, so that the design time can reduce the air pumping time of the dehumidifier water pump as far as possible. In addition, under the condition that the dehumidifier normally works, the environmental humidity of the environment where the dehumidifier is located can be reduced, and if the water inlet speed is high and the water level is not reached and the conduction signal of the low-level sensor is not received due to the large environmental humidity, the problem can be solved under the condition that the first counting and the second counting do not reach the preset times. If the water pump has low lift or the water inlet pipe of the water pump is slightly blocked, the water pump has low water discharging speed and does not receive the conduction signal of the low-level sensor under the water level, and the problem can be solved under the condition that the first counting and the second counting do not reach the preset times. Based on the method provided by the invention, the obtained fault conclusion is more reliable.
Further, when the second count is obtained through counting and the sum of the first count and the second count is smaller than the preset number of times, the water pump is restarted after the third preset time, whether the conduction signal of the low sensor is received in the second preset time after the water pump is restarted is judged again, and the second count is accumulated under the condition that the conduction signal of the low sensor is not received until the conduction signal of the low sensor is received or the sum of the first count and the second count is larger than or equal to the preset number of times. And the water pump is restarted after the third preset time period, so that the air pumping time period of the water pump of the dehumidifier can be reduced as much as possible. Furthermore, when the sum of the first count and the second count is less than the preset times, the water pump is enabled to circularly operate for a second preset time length, so that the anti-interference capacity of the dehumidifier can be improved, and the air pumping time length of the water pump of the dehumidifier can be reduced as much as possible.
Furthermore, under the condition that the conduction signal of the low-level sensor is received, the water pump is turned off, and the first time and the second time are cleared, so that the reliability of the fault conclusion can be further improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 shows a first overall structural schematic of a dehumidifier according to one embodiment of the present invention;
FIG. 2 shows a second overall structural schematic of a dehumidifier according to one embodiment of the present invention;
FIG. 3 shows a first schematic view of a water-receiving pan of a dehumidifier according to an embodiment of the present invention;
FIG. 4 illustrates a second schematic view of a water-receiving pan of a dehumidifier according to an embodiment of the present invention;
FIG. 5 illustrates a control block diagram for a dehumidifier according to one embodiment of the present invention;
FIG. 6 illustrates a flow diagram of a drain control method for a dehumidifier according to one embodiment of the present invention;
fig. 7 is a detailed flowchart illustrating a drain control method for a dehumidifier according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that the technical features of the embodiments and alternative embodiments of the present invention may be combined with each other without conflict.
FIG. 1 shows a first overall structural schematic of a dehumidifier according to one embodiment of the present invention; fig. 2 shows a second overall structural schematic diagram of a dehumidifier according to an embodiment of the present invention. Referring to fig. 1 and 2, the dehumidifier 100 may include a water collection assembly 170 for collecting water in an environment where the dehumidifier 100 is located, a water pan 110 disposed below the water collection assembly 170 for receiving water drained by the water collection assembly 170, a water tank 150 disposed below the water pan 110, and a water pump 140 for draining water out of the water pan 110.
The dehumidifier 100 of the present invention includes two dehumidification modes, a water pump and a non-water pump. In the water pump dehumidification mode of the dehumidifier 100, the water pump 140 discharges water to the water tray 110, manpower is not needed, and the dehumidifier 100 is suitable for being placed in environments with few people or no people, such as basements and the like. When the dehumidifier 100 is in the non-water pump dehumidification mode, water in the water receiving tray 110 flows into the water tank 150, and when the water tank 150 is full of water, a water full alarm signal is sent out to remind people of pouring water, so that the dehumidifier 100 is suitable for being placed in environments where people exist, such as bedrooms, living rooms and the like. In practical application, two dehumidification modes of a water pump and a non-water pump can be switched at any time according to actual needs, so that the user requirements are met, and better use experience is brought to users.
The water pump mode and the non-water pump dehumidification mode of the dehumidifier 100 will be described in detail below with reference to specific structures of the dehumidifier 100.
FIG. 3 shows a first schematic view of a water-receiving pan of a dehumidifier according to an embodiment of the present invention; FIG. 4 illustrates a second schematic view of a water-receiving pan of a dehumidifier according to an embodiment of the present invention; FIG. 5 illustrates a control block diagram for a dehumidifier according to one embodiment of the present invention. Referring to fig. 1 to 5, a first water drainage channel 111 is disposed in the water pan 110, and the water collection assembly 170 includes an air channel cover plate 171, a fan, and the like. The water collected by the water collection assembly 170 first flows into the first drainage channel 111, and the first drainage hole 1111 is provided inside the first drainage channel 111. The water pump 140 includes a water inlet pipe 141, and the water inlet pipe 141 is disposed in the first drain hole 1111. In the water pump mode, the water in the first drain tank 111 may be drained by the water pump 140.
Specifically, the first water level detecting means 120 is located in the first drain tank 111, and the first water level detecting means 120 may be a complex float switch. The first water level detecting device 120 includes a guide 121 and a float 123, the guide 121 is located in the first drain tank 111, and a top of the guide 121 is fixedly disposed on the air duct cover plate 171 at a position corresponding to the first drain tank 111 to ensure that the guide 121 guides the float 123. The guide 121 is preferably a float guide post over which the float 123 is fitted. The guide 121 is provided with a low sensor 125 and a high sensor 124 in this order from the low to the high, and a magnet is provided inside the float 123. The float 123 floats upwards along the guide member 121 under the action of water, and after the float 123 floats upwards to a first specified water level, the low sensor 125 is conducted under the action of a magnetic field and sends a conducting signal; when the float 123 floats to the second predetermined water level, the high level sensor 124 is turned on by the magnetic field and emits a conduction signal. Between the first prescribed water level and the second prescribed water level, the high level sensor 124 and the low level sensor 125 are in an off state.
In the water pump mode, after receiving the on signal of the high sensor 124, the water pump 140 is turned on to discharge the water in the first drain tank 111; after receiving the on signal of the low sensor 125, the water pump 140 is turned off to stop the water discharge.
In order to prevent the float 123 from being adsorbed on the bottom wall of the first drain tank 111, as shown in fig. 4, a suction prevention member 122 is provided at a contact portion of the guide 121 and the bottom wall of the first drain tank, and the suction prevention member has an annular shape as a whole and is provided around the guide 121. The suction prevention part 122 has a plurality of suction prevention ribs 1221 protruded upward so as to prevent the float 123 from being adsorbed on the bottom wall of the first drain tank 111.
In addition, a set height difference exists between the first and second predetermined water levels, so that the water pump 140 can be prevented from being frequently turned on.
A second drainage groove 112 is further disposed in the water receiving tray 110, a second drainage hole 1121 is disposed on an inner wall of the second drainage groove 112, and the second drainage hole 1121 is communicated with the water tank 150. The second drain tank 112 shares a part of the side wall with the first drain tank 111, a first overflow port 1122 which is recessed downward is formed in a part of the side wall, and the first predetermined water level is lower than the lowest point of the first overflow port 1122, so that the water in the first drain tank 111 can be prevented from flowing into the second drain tank 112 due to fluctuation of the water surface. When the water level in the first drain tank 111 is higher than the lowest point of the first overflow port 1122, the water in the first drain tank 111 flows to the second drain tank 112. In the non-pumping mode, the water in the first drain tank 111 reaches the lowest point of the first overflow port 1122, flows into the second drain tank 112 through the first overflow port 1122, and flows into the tank 150 through the second drain tank 112.
Referring to fig. 5, a second water level detecting device 180 is disposed in the water tank 150, and when the water tank 150 is detected to be in a full water state by the second water level detecting device 180, a full water alarm signal is sent to remind a user to pour water.
The second water level detecting means 180 may be a mechanical type water level detecting means provided on a sidewall of the water tank 150, or may be a float switch type water level detecting means, and the present invention is not particularly limited.
In addition, a third drain tank 113 is further disposed in the water receiving tray 110, a third drain hole 1131 is disposed in the third drain tank 113, and the third drain hole 1131 is communicated with the water tank 150. The third drain groove 113 and the second drain groove 112 share a part of the side wall, a second overflow port 1132 which is recessed downward is provided on the part of the side wall shared by the third drain groove 113 and the second drain groove 112, the lowest point of the second overflow port 1132 is lower than the lowest point of the first overflow port 1122, and when the water level of the second drain groove 112 is higher than the lowest point of the second overflow port 1132, the water in the second drain groove 112 flows into the third drain groove 113 and flows into the water tank 150. The third drain groove 113 is provided such that water of the drip tray 110 can flow into the water tank 150 through the third drain groove when the second drain hole 1121 is clogged or the water inflow rate of the second drain groove 112 is excessively high.
In addition, in the solution of the present invention, if the dehumidifier 100 needs to be switched from the non-water pump mode to the water pump mode, it is determined whether the high sensor 124 is in the on state, and if the high sensor 124 is in the on state, the water pump 140 is turned on to turn on the water pump mode.
Referring to fig. 5, the controller 160 may include a memory 161 and a processor 162, wherein a computer program 1611 is stored in the memory 161, and the computer program 1611 is executed by the processor 162 to implement the drainage control method for the dehumidifier according to the following embodiments.
Fig. 6 is a flowchart illustrating a drainage control method for a dehumidifier according to an embodiment of the present invention. Specifically, the method may be applied to the dehumidifier 100 in the above embodiment, specifically, for a water pump mode, referring to fig. 6, the method for controlling drainage may at least include the following steps:
s202: after receiving the on signal of the high sensor 124, the water pump 140 is turned on.
S204: whether the water pump 140 is turned on within the first preset time period is judged to receive the conduction signal of the low sensor 125.
The first preset time period is calculated according to the maximum water pumping speed of the water pump 140 and the condition of no water inflow. The water discharge amount corresponding to the first predetermined time period is larger, and theoretically, after the water pump 140 is turned on for the first predetermined time period, the water level of the water pan 110 will generally decrease below the second predetermined water level, and the controller 160 will receive the conducting signal of the low sensor 125.
S206: if the conduction signal of the low sensor 125 is not received within the first preset time period, the water pump 140 is kept turned on, and the number of times that the water pump 140 is turned on for the first preset time period and the conduction signal of the low sensor 125 is not received is counted to obtain a first count.
If the controller 160 does not receive the signal from the low sensor 125 within the first preset time period, the determination reason may be that the water intake speed is fast and the water discharge speed is slow, or the water pump 140 fails to discharge water, or the low sensor 125 fails.
S208: judging whether the water pump 140 receives a conduction signal of the low sensor 125 within a second preset time period after the first preset time period; the second preset time length is less than the first preset time length;
the second preset duration is shorter than the first preset duration, so that the air pumping duration of the water pump 140 can be reduced as much as possible.
S210: if the on signal of the low sensor 125 is not received within a second preset time period during which the water pump 140 is turned on, the water pump 140 is turned off, the number of times that the water pump 140 is turned off due to the fact that the on signal of the low sensor 125 is not received is counted to obtain a second count, and the low sensor 125 and/or the water pump 140 is determined to have a fault when the first count and the second count are greater than or equal to the preset number of times.
And after determining that the low sensor 125 and/or the water pump 140 have faults, turning off the dehumidifier 100 and outputting a fault alarm signal to prompt a user that the dehumidifier 100 has faults.
The time duration corresponding to the preset number of times generally exceeds twenty-four hours, the environmental humidity of the environment where the dehumidifier 100 is located is reduced under the condition that the dehumidifier 100 normally works, and if the water inlet speed is high and the water level does not go due to large environmental humidity and the conduction signal of the low sensor 125 is not received, the problem can be solved under the condition that the first count and the second count do not reach the preset number of times. If the water pump 140 has a low lift or the water inlet pipe of the water pump 140 is slightly blocked, the water pump is slow in draining, does not reach the water level, and does not receive the conduction signal of the low sensor 125, the problem will be solved if the first count and the second count do not reach the preset number of times. The invention can obtain more reliable conclusion about the failure of the dehumidifier.
In the above step S210, in the case that the second count is obtained by the counting and the sum of the first count and the second count is less than the preset number of times, the water pump 140 is turned on again after the third preset time period, and whether the turn-on signal of the low sensor 125 is received within the second preset time period after the water pump 140 is turned on again is judged again, and the second count is accumulated in the case that the turn-on signal of the low sensor 125 is not received until the turn-on signal of the low sensor 125 is received or the sum of the first count and the second count is greater than or equal to the preset number of times.
Wherein, the water pump is restarted after the third preset duration, so as to reduce the duration of the air pumping of the water pump 140 as much as possible. Further, in the case where the sum of the first count and the second count is less than the preset number of times, the water pump 140 is cyclically operated for a second operation time period. Under the condition that the water inlet pipe of the water pump 140 is slightly blocked by the gravel, the gravel can be washed away by the water pump for multiple times, and the anti-interference performance of the dehumidifier 100 during operation is improved. Further, cycling through the second operation period may reduce the duration of the pump 140.
In the above step, when the on signal of the low sensor 125 is received, the water pump 140 is turned off and the first count and the second count are cleared. The first count and the second count are cleared, so that the frequency is ensured to be continuous when the frequency is greater than or equal to the preset frequency, and the reliability of the fault conclusion can be further improved.
In order to make the display of the drainage control method for the dehumidifier 100 according to the embodiment of the present invention more clear, a specific embodiment is described below.
Fig. 7 is a detailed flowchart illustrating a drain control method for a dehumidifier according to an embodiment of the present invention. Referring to fig. 7, a drain control method for the dehumidifier 100 may include at least the steps of:
s1: after receiving the on signal of the high sensor 124, the water pump 140 is turned on.
S2: whether the water pump 140 is turned on for the first preset time period T1 to receive the on signal of the low sensor 125 is determined.
The first preset duration is calculated according to the maximum water pumping speed of the water pump 140 and the condition of no water inflow, the water discharge amount corresponding to the first preset duration is relatively large, and theoretically, after the water pump 140 is started for the first preset duration, the water level of the water pan 110 will usually fall below the second specified water level, and a conducting signal of the low sensor 125 will be received.
S3: if the water pump 140 is turned on for the first preset time period T1 and the on signal of the low sensor 125 is received, the water pump 140 is turned off and the count N is cleared when the on signal of the low sensor 125 is received.
When the on signal of the low sensor 125 indicates that the water level of the first drain tank 111 is not higher than the second predetermined water level, the water pump 140 is turned off.
S4: if the water pump 140 is turned on for the first preset time period T1 without receiving the on signal from the low sensor 125, the count N is equal to 1.
S5: if the water pump 140 is turned on for the first preset time period T1 without receiving the conduction signal of the low sensor 125, the water pump 140 is turned on.
S6: it is determined whether the water pump 140 receives the turn-on signal of the low sensor 125 for a second preset time period T2 after the first preset time period T1.
The second preset duration is less than the first preset duration, which may reduce the idle pumping duration of the water pump 140 as much as possible.
S7: if the water pump 140 is started within the second preset time period T2 and the on signal of the low sensor 125 is received, the water pump 140 is turned off and the count N is cleared.
S8: if the water pump 140 is turned on for the second preset time period T2 without receiving the on signal of the low sensor 125, the water pump 140 is turned off for a third preset time period T3, and the count N is equal to N + 1.
Turning off the third preset duration may further reduce the idle pumping duration of the water pump 140.
S9: judging whether the count N is greater than or equal to a preset time T;
s10: if the count N is greater than or equal to the preset number T, the dehumidifier 100 is closed and a fault alarm signal is output.
The duration corresponding to the preset number of times T generally exceeds 24 hours, and when the count N is greater than or equal to the preset number of times T, it can be determined that the low sensor 125 and/or the water pump 140 have a fault.
S11: if the count N is less than the preset number T, the process returns to step S5, and the steps S5-S10 are repeated.
In the case where the count N is less than the preset number of times, the water pump is circulated for the second preset time period T2, so that the idle pumping time period of the water pump 140 can be reduced as much as possible.
The dehumidifier 100 provided by the invention has two dehumidification modes of a water pump and a non-water pump based on structural design, and can be switched at any time according to needs so as to meet the user requirements as much as possible and bring better use experience to users. In addition, based on the drainage control method for the dehumidifier 100 provided by the invention, after various interference factors are eliminated, the water pump 140 and/or the low sensor 125 of the dehumidifier 100 are determined to have faults, and the obtained fault conclusion is more reliable. In addition, in the drainage control method provided by the invention, the air pumping time of the water pump 140 of the dehumidifier 100 can be reduced as much as possible based on the design of the first preset time, the second preset time and the third preset time. In addition, when the on signal of the low sensor 125 is received, the count is cleared while the water pump is turned off, so that the number of times when the preset number of times is reached is continuous, and the reliability of the conclusion about determining the failure of the dehumidifier is further improved.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A drainage control method for a dehumidifier, the dehumidifier including a water receiving pan for collecting drainage of the dehumidifier, a water pump for discharging water from the water receiving pan, and a first water level detecting device for detecting a water level of the water receiving pan, the first water level detecting device including a high sensor for detecting that the water level exceeds a first prescribed water level and a low sensor for detecting that the water level is lower than a second prescribed water level, the first prescribed water level being higher than the second prescribed water level, the drainage control method comprising:
after receiving a conducting signal of the high-level sensor, starting the water pump;
judging whether a conduction signal of the low-level sensor is received or not when the water pump is started within a first preset time;
if the conduction signal of the low sensor is not received within the first preset time, the water pump is kept started, and the times that the water pump is started for the first preset time and the conduction signal of the low sensor is not received are counted to obtain a first count;
judging whether the water pump receives a conduction signal of the low-level sensor within a second preset time period after the first preset time period; the second preset time length is less than the first preset time length;
if the conduction signal of the low sensor is not received within the second preset time, the water pump is turned off, the times of turning off of the water pump due to the fact that the conduction signal of the low sensor is not received are counted to obtain a second count, and the low sensor and/or the water pump are determined to be in fault under the condition that the sum of the first count and the second count is larger than or equal to the preset times.
2. The drainage control method according to claim 1,
and restarting the water pump after a third preset time length under the condition that the second count is obtained through counting and the sum of the first count and the second count is less than the preset times, judging whether the conduction signal of the low sensor is received within the second preset time length after restarting the water pump, and accumulating the second count under the condition that the conduction signal of the low sensor is not received until the conduction signal of the low sensor is received or the sum of the first count and the second count is more than or equal to the preset times.
3. The drainage control method according to claim 2,
and under the condition of receiving the conducting signal of the low sensor, closing the water pump and clearing the first count and the second count.
4. The drain control method according to claim 3, wherein the drip tray includes a first drain tank, the water pump is configured to drain water from the first drain tank, and the first water level detection device is located in the first drain tank and configured to detect a water level of the first drain tank.
5. The drainage control method according to claim 4,
the dehumidifier also comprises a water tank, the water receiving tray also comprises a second water discharging groove, the second water discharging groove is communicated with the water tank, the second water discharging groove and the first water discharging groove share part of side wall, an overflow port is arranged on the part of side wall, the lowest point of the overflow port is higher than the first specified water level,
if the water level of the first water drainage tank is higher than the lowest point of the overflow port, the water in the first water drainage tank flows to the second water drainage tank and further flows to the water tank.
6. The drain control method of claim 5, wherein the dehumidifier further comprises a second water level detection device provided in the water tank, the drain control method further comprising:
acquiring a water tank water level signal detected by the second water level detection device;
judging whether the water tank is full of water or not according to the water tank level signal;
and if the water tank is in a full water state, outputting a full water alarm signal to prompt a user that the water tank is full.
7. The drainage control method according to claim 1,
and when the water pump and/or the low-level sensor are determined to be in fault, the dehumidifier is closed, a fault alarm signal is output, and a user is prompted that the dehumidifier is in fault.
8. A dehumidifier comprising:
the water receiving tray is used for collecting the drainage of the dehumidifier;
the water pump is used for discharging water outwards from the water receiving tray;
the first water level detection device is positioned in the water receiving tray and used for detecting the water level of the water receiving tray;
a controller comprising a memory and a processor, the memory having stored therein a computer program for implementing a drain control method for a dehumidifier according to any one of claims 1 to 7 when the computer program is executed by the processor.
9. The dehumidifier of claim 8,
the first water level detection device comprises a guide piece and a floater, the guide piece is positioned in the water pan and used for guiding the floater, a low-level sensor and a high-level sensor are sequentially arranged on the guide piece from low to high, and a magnet is arranged inside the floater;
the floater floats upwards along the guide piece under the action of water, and after the floater floats upwards to a first specified water level, the low-level sensor is conducted under the action of a magnetic field and sends a conducting signal; and after the floater floats to a second specified water level, the high-level sensor is conducted under the action of the magnetic field and sends a conducting signal.
10. The dehumidifier of claim 9,
the guide piece is a float guide post, and the float is sleeved on the float guide post.
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