CN112032961B - Control method of dehumidifier - Google Patents
Control method of dehumidifier Download PDFInfo
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- CN112032961B CN112032961B CN202010771467.1A CN202010771467A CN112032961B CN 112032961 B CN112032961 B CN 112032961B CN 202010771467 A CN202010771467 A CN 202010771467A CN 112032961 B CN112032961 B CN 112032961B
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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
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
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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
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/30—Condensation of water from cooled air
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- Drying Of Gases (AREA)
Abstract
The invention discloses a dehumidifier control method, which comprises the following steps: detecting the water level of the condensed water, and judging whether the current water level of the condensed water reaches the preset highest water level; if so, controlling intermittent drainage and acquiring the drainage times; judging whether the obtained drainage times reach a preset time N or not; if so, 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; if so, judging that the drainage system is normal, otherwise, judging that the drainage system is in fault. According to the control method of the dehumidifier, the drainage fault can be accurately identified, the service life can be prolonged, the cost can be reduced, and the requirement on the installation space can be met.
Description
Technical Field
The invention relates to the technical field of air dehumidification, in particular to a control method of a dehumidifier.
Background
Dehumidifier among the correlation technique includes water pump and water level switch usually, and water level switch is used for detecting the comdenstion water level, and the comdenstion water of water pump discharge again, and the water pump opens according to water level switch's signal and stops, and wherein water level switch mainly has two kinds of setting modes:
the utility model provides a setting mode is only for setting up a water level switch, detects the state of comdenstion water level through a water level switch, and when the comdenstion water level was located the high water level, the water pump started and began to discharge the comdenstion water, and when the comdenstion water level was located the low water level, the water pump stopped and stopped to discharge the comdenstion water like this, but whether this kind of mode accurate discernment drainage system normally worked. For example, when the drain line is blocked, the condensed water in the storage tank cannot be drained within a predetermined time, and the operation time of the water pump may exceed the predetermined time. Or, when the water level switch is out of order, the water pump cannot transmit the water discharge stopping signal to the water pump, and the water pump can work for a long time. The two situations can both cause the water pump to work for too long time, and the water pump is damaged due to too large heat productivity.
The other setting mode is to set two water level switches, one is a high level switch and the other is not a low level switch, for example, when the high level switch is closed, the water pump is started to start to discharge the condensed water, when the low level switch is disconnected, the water pump is stopped to stop discharging the condensed water, the two water level switches are used for linkage control of the condensed water level and fault identification, the setting mode needs to use the two water level switches, the cost is high, and the water storage tank is required to have a certain height difference and enough space to install the two water level switches.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, an object of the present invention is to provide a method for controlling a dehumidifier, which can accurately recognize a drainage fault, and can improve a service life, reduce a cost, and reduce a requirement for an installation space.
In order to achieve the above object, according to a control method of a dehumidifier provided by an embodiment of the present invention, the control method of the dehumidifier includes: detecting the water level of the condensed water, and judging whether the current water level of the condensed water reaches the preset highest water level; if so, controlling intermittent drainage and acquiring the drainage times; judging whether the obtained drainage times reach a preset time N or not; if so, 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; if so, judging that the drainage system is normal, otherwise, judging that the drainage system is in fault.
According to the control method of the dehumidifier, the drainage fault can be accurately identified, the service life can be prolonged, the cost can be reduced, and the requirement on the installation space can be met.
According to some embodiments of the invention, the controlling intermittent draining comprises: detecting current drainage running time T1 after each time of controlling drainage to start, and judging whether the current drainage running time T1 reaches a first preset time T1; if so, stopping draining, detecting the current stopping time T2, and judging whether the current stopping time T2 reaches a second preset time T2; if yes, controlling the next drainage to start.
According to some embodiments of the invention, the obtaining of the number of times of the drainage comprises: when the dehumidifier is started, recording the drainage frequency as 0; and controlling that the drainage times are recorded once when each time of drainage is started, wherein the recorded drainage times are the last recorded drainage times plus 1.
According to some embodiments of the present invention, the determining whether the obtained number of times of draining reaches a preset number includes: and judging the size relation between the drainage times recorded at the time and the preset times every time the drainage is controlled to stop.
According to some embodiments of the invention, the first preset time t1 is not greater than a safe working time of the water pump during stalling and/or idling.
According to some embodiments of the invention, the second preset time t2 is not less than the water pump overheat recovery time.
According to some embodiments of the invention, the predetermined number of times N ═ T3/T1+ Δ N; t3 is the drainage time required for the condensed water to fall from the preset highest water level to the preset lowest water level, and delta N is a reserved safety threshold.
According to some embodiments of the present invention, when the obtained number of times of draining reaches the preset number of times and the draining is stopped, the obtained number of times of draining is cleared.
According to some embodiments of the present invention, if a drain system failure is determined, a first failure indication is issued.
According to some embodiments of the present invention, when the drainage frequency is 0 and the current condensate water level is lower than the preset highest water level, if the drainage start is detected, a second fault indication is issued.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of a dehumidifier according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a dehumidifier according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A method of controlling a dehumidifier according to an embodiment of the present invention will be described with reference to the accompanying drawings.
For example, as shown in fig. 2, the method for controlling a dehumidifier according to the embodiment of the present invention may be applied to a dehumidifier 100, and the dehumidifier 100 may include a water storage tank 110, a water level switch 120, a water inlet pipe 130, a water pump 150, and a water outlet pipe 140. The water storage tank 110 may be used to store condensed water generated during the operation of the dehumidifier 100, the water level switch 120 may be installed on the water storage tank 110 and used to detect the level of the condensed water in the water storage tank 110, two ends of the water inlet pipe 130 are respectively connected to the water storage tank 110 and the water pump 150, and one end of the water outlet pipe 140 is connected to the water pump 150, that is, the water pump 150 is located between the water inlet pipe 130 and the water outlet pipe 140 in the flow direction of the condensed water. The water pump 150 may be an electromagnetic motor, and the water level switch 120 may be a float switch.
As shown in fig. 1, the method for controlling a dehumidifier according to an embodiment of the present invention includes:
detecting the water level of the condensed water, and determining whether the current water level of the condensed water reaches a preset maximum water level, for example, detecting the water level of the condensed water through a water level switch 120;
if so, controlling intermittent drainage, namely controlling the water pump 150 to be started intermittently and acquiring the drainage times;
judging whether the obtained drainage times N reach preset times N or not;
if so, stopping draining, namely turning off the water pump 150, detecting the water level of the condensed water, and judging whether the current water level of the condensed water is not higher than the preset lowest water level;
if so, judging that the drainage system is normal, otherwise, judging that the drainage system is in fault.
According to the control method of the dehumidifier of the embodiment of the invention, when the water level of the detected condensed water reaches the preset highest water level, the water pump 150 starts to operate discontinuously, after the drainage times reach the drainage times N, the water pump 150 stops operating, and whether the current water level of the condensed water is not higher than the preset lowest water level is judged so as to judge whether the drainage system is normal or not.
Therefore, according to the control method of the dehumidifier provided by the embodiment of the invention, the control program is utilized to operate in a normal state that the water pump can bear, the operation time is accumulated through the operation times, and whether the pipeline and the like are abnormal is judged after the water quantity of the water storage tank is discharged, so that the fault information is identified, the water pump is not damaged due to long-time operation before the user removes the fault, the whole dehumidifier can normally operate after the fault is removed, and the water discharging function of the water pump is not lost.
In addition, according to the control method of the dehumidifier provided by the embodiment of the invention, the fault can be accurately identified only by adopting one water level switch, compared with the related technology adopting two water level switches, the control method is lower in cost, lower in requirements on the height difference of the water storage tank and the installation space, and wider in application range.
In addition, the continuous operation time of the water pump can be effectively shortened by controlling the intermittent drainage, and the heating degree of the water pump in operation at each time is reduced, so that the damage probability of the water pump is reduced, and the service life of the water pump is further prolonged.
Therefore, the control method of the dehumidifier can accurately identify the drainage fault, can prolong the service life, and can reduce the cost and the requirement on the installation space.
According to some embodiments of the invention, as shown in fig. 1, the controlling intermittent draining comprises:
detecting current drainage running time T1 after each time of controlling drainage to start, and judging whether the current drainage running time T1 reaches a first preset time T1;
if so, stopping draining, detecting the current stopping time T2, and judging whether the current stopping time T2 reaches a second preset time T2;
if yes, controlling the next drainage to start.
It can be understood that the first preset time t1 and the second preset time t2 can be set according to the user requirement or the use environment, which improves the universality of the control method of the dehumidifier. The intermittent drainage can be realized by setting the first preset time t1 and the second preset time t2, the drainage time is the same each time, the interval time between two adjacent times of drainage is also the same, and the operation complexity of the control method of the dehumidifier is simplified. In addition, by setting the first preset time t1 and the second preset time t2, the water pump 150 can be continuously operated without being damaged, and the running and stopping time of the water pump 150 is prevented from being too long, so that the drainage efficiency and the service life of the water pump 150 are both considered.
Further, the first preset time t1 is not greater than the safe operating time of the water pump 150 during stalling and/or idling. The safe time is the longest operation time when the water pump 150 is locked and/or idled, and the water pump 150 is not damaged.
For example, the water pump 150 is locked, which means that when the water inlet pipe 130, the water outlet pipe 140 or the water pump 150 is blocked, the rotation speed of the water pump 150 may be zero and torque output may still occur, and at this time, the water level of the condensed water is slowly reduced or is not reduced. The idling of the water pump 150 means that when the water level switch 120 fails, the condensed water level may not be higher than the preset minimum level (for example, there is no condensed water or a small amount of condensed water in the water storage tank 110), and the electric signal fed back by the water level switch 120 is also an electric signal that the condensed water level is higher than the preset minimum level, or the water pump 150 fails, and the water pump 150 receives a signal that the condensed water level is not higher than the preset minimum level, and the water pump 150 still operates.
By setting the first preset time T1 not more than the safe operating time and stopping the operation of the water pump 150 when the drain operation time T1 reaches the first preset time T1, the continuous operation time of the water pump 150 is not more than the safe operating time, and when the drain system fails, the damage of the water pump 150 can be avoided, and the service life of the water pump 150 is effectively prolonged.
Still further, the second preset time t2 is not less than the overheat recovery time of the water pump 150.
For example, the water pump 150 may be operated for a long time, and the water pump 150 may generate heat seriously to damage the water pump 150. The overheat recovery time is a time required for the temperature of the water pump 150 to be lowered to the temperature of the initial state of the water pump 150 after the water pump 150 continues to operate for the safe operation time, and the initial state of the water pump 150 is a state before the water pump 150 does not operate.
Every time the stop time T2 reaches the second preset time T2, the next drainage is controlled to start, in other words, the second preset time T2 is set between two adjacent times of drainage. Therefore, the stop time of the water pump 150 is long enough, the water pump 150 can be guaranteed to operate again after being fully cooled, the damage to the water pump 150 is further avoided, and the service life of the water pump 150 is further prolonged.
According to some embodiments of the invention, the obtaining the number of drains n comprises:
when the dehumidifier 100 is started, recording the drainage times n as 0;
and controlling that the drainage times n are recorded every time drainage is started, wherein the recorded drainage times n are the last recorded drainage times n plus 1.
Wherein, when the drainage system is draining water, the dehumidifier 100 is closed, and when the dehumidifier 100 is opened again, the drainage frequency n is also zero. Therefore, the drainage system detects the condensate water level again to judge whether drainage is carried out or not after the dehumidifier 100 is started every time, so that the condition that the value of the drainage times N of the current drainage is greater than the preset drainage times N due to the interruption of the previous drainage is avoided, and the drainage times N are both 0 after the dehumidifier 100 is started every time, so that the operation complexity of the control method of the dehumidifier is simplified.
Further, as shown in fig. 1, the determining whether the acquired drainage number n reaches a preset number includes:
and judging the size relation between the drainage times N recorded at the time and the preset times N each time the drainage is controlled to stop. Adding one to the value of the drainage times N when drainage is started every time, comparing the updated drainage times N with the preset drainage times N, and performing primary drainage if the drainage times N are smaller than the preset drainage times N; if the drainage times N reach the preset drainage times N, it indicates that the current drainage amount meets the preset drainage amount, and the dehumidifier 100 can normally operate.
According to some embodiments of the present invention, as shown in fig. 1, the predetermined number of times N is T3/T1+ Δ N, where T3 is a drainage time required for the condensed water to fall from the preset highest water level to the preset lowest water level, and Δ N is a reserved safety threshold.
Specifically, T3 is the drainage time required for the condensate to fall from the preset maximum water level to the preset minimum water level, and therefore T3/T1 is the number of drainage times n required for the condensate to reach the minimum water level from the maximum water level when the drainage system is in operation. Since the dehumidifier 100 is continuously operated during the drainage process, the condensed water may continuously flow into the storage tank 110, increasing the total amount of the condensed water, resulting in that the total amount of the condensed water to be drained is greater than the drainage amount from the preset maximum water level to the preset minimum water level, and since the water pump 150 is intermittently operated, the operating efficiency of the water pump 150 may be lower than the operating efficiency of the continuous operation thereof. Therefore, the preset number of times N is greater than T3/T1, and a reserved safety threshold Δ N of the drainage number of times N needs to be set to ensure that the condensed water level is not higher than the preset minimum level when the water pump 150 operates to the preset number of times N, and the value of Δ N may be set according to the use environment and the working efficiency of the water pump 150, so that the drainage efficiency and the safety of the drainage system can be considered by the drainage number of times N.
According to some embodiments of the present invention, as shown in fig. 1, when the obtained number N of times of draining reaches the preset number N and the draining is stopped, the obtained number N of times of draining is cleared. In other words, the drainage is stopped after the drainage number N of the drainage system reaches the preset number N, and at this time, the condensed water level is not higher than the preset minimum level, which indicates that the drainage system normally operates, the water pump 150 stops operating, the dehumidifier 100 continues to operate, and the drainage number N is cleared, i.e., the drainage number N is 0, so that the situation that the value of the drainage number N is greater than the preset number N is prevented, and the next operation of the drainage system is facilitated.
According to some embodiments of the present invention, as shown in fig. 1, if it is determined that the drainage system is malfunctioning, a first malfunction indication is issued. Therefore, the user can be reminded to check the dehumidifier 100 and remove the fault through the first fault prompt, so that the user can know the working state of the dehumidifier 100 more clearly, the dehumidifier 100 is prevented from running continuously under the condition that a drainage system is damaged, and the reliability of the dehumidifier 100 is further improved.
Further, when the drainage times n are 0 and the current condensate water level is lower than the preset highest water level, if the drainage starting is detected, a second fault prompt is sent. Wherein the second fault indication may be the same as or different from the first fault indication.
It can be understood that, when the drainage number n is 0, drainage may not be started after startup or started after the previous drainage is finished, and if the level of the condensed water is lower than the preset maximum level, it indicates that drainage is not needed at this time, and the drainage system should be shut down, so that detection of drainage startup indicates a drainage system fault, for example, a water pump 150 fault or a water level switch 120 fault. Therefore, the user can be reminded to check the dehumidifier 100 through the second fault prompt, and then faults can be eliminated, so that the user can know the working state of the dehumidifier 100 more clearly, the dehumidifier 100 is prevented from running continuously under the condition that a drainage system is damaged, and the reliability of the dehumidifier 100 is further improved.
Other configurations of the dehumidifier 100 according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
For example, the dehumidifier 100 performs a dehumidification cycle of the dehumidifier 100 by using a compressor, a condenser, an expansion valve, and an evaporator. The dehumidification cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a dehumidification effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. Throughout the cycle, the dehumidifier 100 can adjust the humidity of the indoor space.
In the description herein, references to the description of "a particular embodiment," "a particular example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A method for controlling a dehumidifier is characterized by comprising the following steps:
detecting the water level of the condensed water, and judging whether the current water level of the condensed water reaches the preset highest water level;
if so, controlling intermittent drainage and acquiring the drainage times;
judging whether the obtained drainage times reach a preset time N or not;
if so, 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;
if so, judging that the drainage system is normal, otherwise, judging that the drainage system is in fault;
the controlling of the intermittent drainage includes:
detecting current drainage running time T1 after each time of controlling drainage to start, and judging whether the current drainage running time T1 reaches a first preset time T1;
if so, stopping draining, detecting the current stopping time T2, and judging whether the current stopping time T2 reaches a second preset time T2;
if yes, controlling the next drainage to start;
the first preset time t1 is not more than the safe working time of the water pump in locked rotor and/or idle running;
the predetermined number of times N is T3/T1+ Δ N;
t3 is the drainage time required for the condensed water to fall from the preset highest water level to the preset lowest water level, and delta N is a reserved safety threshold.
2. The method of claim 1, wherein the obtaining the number of times of the drainage includes:
when the dehumidifier is started, recording the drainage frequency as 0;
and controlling that the drainage times are recorded once when each time of drainage is started, wherein the recorded drainage times are the last recorded drainage times plus 1.
3. The method of claim 1, wherein the determining whether the acquired drain times reaches a preset number comprises:
and judging the size relation between the drainage times recorded at the time and the preset times N each time the drainage is controlled to stop.
4. The method as claimed in claim 1, wherein the second preset time t2 is not less than the pump overheat recovery time.
5. The method of any one of claims 1 to 4, wherein the acquired drain frequency is cleared when the acquired drain frequency reaches the preset frequency N and the drain is stopped.
6. The method of any one of claims 1 to 4, wherein if it is determined that the drain system is out of order, a first failure indication is issued.
7. The method as claimed in any one of claims 1 to 4, wherein when the number of times of draining is 0 and the current condensed water level is lower than the preset maximum level, if it is detected that draining is started, a second fault is issued.
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| CN113370756B (en) * | 2021-07-15 | 2022-07-15 | 青岛海尔空调器有限总公司 | Drainage method and device of parking air conditioner |
| CN113685922B (en) * | 2021-08-11 | 2023-03-10 | 珠海拓芯科技有限公司 | Dehumidification device, drainage control method and control device |
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