CN114777223B - Dehumidifier and control method thereof - Google Patents

Dehumidifier and control method thereof Download PDF

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Publication number
CN114777223B
CN114777223B CN202210456320.2A CN202210456320A CN114777223B CN 114777223 B CN114777223 B CN 114777223B CN 202210456320 A CN202210456320 A CN 202210456320A CN 114777223 B CN114777223 B CN 114777223B
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China
Prior art keywords
dehumidifier
water
rotating speed
compressor
time
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CN202210456320.2A
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Chinese (zh)
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CN114777223A (en
Inventor
王美霞
李伟宁
赖旭东
刘丹华
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Hisense Guangdong Air Conditioning Co Ltd
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Hisense Guangdong Air Conditioning Co Ltd
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Priority to CN202210456320.2A priority Critical patent/CN114777223B/en
Publication of CN114777223A publication Critical patent/CN114777223A/en
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Classifications

    • 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
    • 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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • 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
    • 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
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • 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
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Gases (AREA)

Abstract

The invention discloses a dehumidifier and a control method thereof, when a micro switch is closed, the compressor and an air blower are not immediately controlled to stop, but the rotating speed of the compressor is maintained unchanged, the rotating speed of the air blower is reduced, the air blowing is reduced, and the continuous running time of the compressor is further detected and the closing time of the micro switch is re-detected; when the continuous operation time of the compressor is larger than the operation time threshold, the operation time of the dehumidifier is indicated to reach the limit value, the detected water full signal can be determined to be accurate, and the compressor and the air blower are controlled to stop at the moment; when the closing time of the micro switch is longer than the set value, the micro switch is controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate. By adopting the embodiment of the invention, the problem of false alarm caused by the fluctuation of the water level of the water tank can be avoided.

Description

Dehumidifier and control method thereof
Technical Field
The invention relates to the technical field of dehumidifiers, in particular to a dehumidifier and a control method thereof.
Background
With the improvement of the quality of living standard of people, the daily demands of people for dehumidifying, drying, ventilating and keeping warm in living environment are gradually becoming, and a dehumidifier is a household appliance device which sucks air in a specific space and removes moisture contained in the air, and discharges the air from which the moisture is removed to the specific space, thereby keeping the air in the specific space dry. Condensed water generated by the operation of the dehumidifier is generally stored by a water storage device (such as a water tank) of the dehumidifier, and is automatically poured out by a user when the water is full. The water full detection method of the dehumidifier in the prior art comprises the following steps: after the main controller detects the water full signal fed back by the water level switch, the main controller immediately gives an alarm to remind a user of water drainage, and meanwhile, the whole machine stops working to prevent water in the water tank from overflowing out of the water tank. However, when the water level in the water tank is higher but does not reach the warning line, the water level fluctuation can be caused by the water tank movement, and the water level fluctuation can cause the water level switch to falsely detect a water full signal, so that the dehumidifier is controlled to stop working and send out an alarm prompt even if the water tank is not full.
Disclosure of Invention
The embodiment of the invention aims to provide a dehumidifier which can avoid the problem of false alarm caused by water level fluctuation of a water tank.
To achieve the above object, an embodiment of the present invention provides a dehumidifier including:
the dehumidification system is used for adjusting the humidity of indoor air and comprises a compressor, a condenser, an evaporator and an air blower which are arranged in the shell of the dehumidifier;
a water tank for storing condensed water generated from an operation process of the dehumidification system;
the water full detection device is used for detecting whether the water stored in the water tank reaches a water full condition or not, is arranged at the upper part of the water tank and comprises a floater and a micro switch, and the micro switch is closed when the water level of the water tank reaches the water full level;
the controller is used for controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length; when the continuous running time of the compressor is longer than a running time threshold or the second closing time of the micro switch is longer than a second set time, controlling the compressor and the air blower to stop running, and sending out prompt information; the second closing time is a closing time which is accumulated again after the micro switch is longer than the second set time when the first closing time is longer than the first closing time.
As an improvement of the above solution, the controller is further configured to: when the continuous operation time length of the compressor is smaller than or equal to the operation time length threshold value and the second closing time length of the micro switch is smaller than or equal to the second set time length, controlling the compressor to maintain the current rotation speed to continue operation, and controlling the air blower to maintain the current rotation speed to continue operation.
As an improvement of the above scheme, the starting time of the continuous operation duration of the compressor is a time point when the dehumidifier restarts the compressor after the dehumidifier is in the water full condition for the last time; the operation time threshold is calculated according to the capacity of the water tank and the dehumidification amount in unit time; the unit time dehumidification amount is the dehumidification amount of the dehumidifier under the rated working condition.
As an improvement of the above solution, the dehumidifier further includes:
the water receiving disc is arranged below the evaporator and used for receiving condensed water generated in the operation process of the dehumidification system, a three-way valve is arranged on a water outlet of the water receiving disc, a first end of the three-way valve is connected with the water outlet, a second end of the three-way valve is connected with a water inlet of the water tank, and a third end of the three-way valve is connected with a drain pipe; the three-way valve is in a conducting state at the first end and the second end in an initial state, and the third end is in a closing state;
The drain pipe is used for guiding out water in the water receiving disc when the third end of the three-way valve is conducted;
the controller is further configured to: after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, the second end of the three-way valve is closed, and the compressor and the air blower are started; wherein the shutdown condition includes at least one of: and the running time of the dehumidifier reaches the preset stop time and a shutdown instruction is received.
As an improvement of the above solution, the controller is further configured to: when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length, the current rotating speed of the air blower is obtained; when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed; and when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
As an improvement of the above aspect, the reducing the rotation speed of the blower includes:
Searching a plurality of prestored rotating speed gear information, and reducing the rotating speed of the air blower according to the rotating speed gear information; or alternatively, the first and second heat exchangers may be,
and acquiring humidity information of the environment where the dehumidifier is located, searching a corresponding rotating speed adjusting value according to the humidity information, and reducing the rotating speed of the air blower according to the rotating speed adjusting value.
In order to achieve the above object, an embodiment of the present invention further provides a control method of a dehumidifier, in which a water-full detection device for detecting whether water stored in a water tank reaches a water-full condition is provided, the water-full detection device includes a float and a micro switch, and the float closes the micro switch when the water level of the water tank reaches the water-full level; the dehumidifier control method includes:
when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length, controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower;
when the continuous running time of the compressor is longer than a running time threshold or the second closing time of the micro switch is longer than a second set time, controlling the compressor and the air blower to stop running; the second closing time length is a closing time length which is accumulated again after the micro switch is longer than a second set time length when the first closing time length is longer than the first closing time length;
And sending out prompt information.
As an improvement of the above solution, the method further includes:
when the continuous operation time length of the compressor is smaller than or equal to the operation time length threshold value and the second closing time length of the micro switch is smaller than or equal to the second set time length, controlling the compressor to maintain the current rotation speed to continue operation, and controlling the air blower to maintain the current rotation speed to continue operation.
As an improvement of the scheme, the dehumidifier further comprises a water receiving disc and a drain pipe, wherein the water receiving disc is respectively connected with the water tank and the drain pipe through a three-way valve, a first end of the three-way valve is connected with the drain outlet, a second end of the three-way valve is connected with a water inlet of the water tank, and a third end of the three-way valve is connected with the drain pipe; the three-way valve is in a conducting state at the first end and the second end in an initial state, and the third end is in a closing state; the dehumidifier control method further comprises:
after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, and the second end of the three-way valve is closed; wherein the shutdown condition includes at least one of: the running time of the dehumidifier reaches the preset stopping time and a stopping instruction is received;
And starting the compressor and the blower.
As an improvement of the above solution, when the micro switch is detected to be closed and the first closing time period is longer than the first set time period, and the compressor is controlled to maintain the current rotation speed, the method further includes:
acquiring the current rotating speed of the air blower;
when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed;
and when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
Compared with the prior art, the dehumidifier and the control method thereof disclosed by the embodiment of the invention can not immediately control the compressor and the blower to stop after the micro switch is closed, but maintain the rotation speed of the compressor unchanged and reduce the rotation speed of the blower, and the reduction of the rotation speed of the blower can reduce indoor air fed into the dehumidifier, so that condensed water condensed by the evaporator is reduced, and the water tank is provided with a buffer stage, at the moment, the continuous running time of the compressor is further detected, and the closing time of the micro switch is re-detected, and when the continuous running time of the compressor is longer than the running time threshold value or the second closing time of the micro switch is longer than the second set time, the fact that the water tank is really full of water at the moment is proved, and the compressor and the blower are controlled to stop running is proved. When the continuous running time of the compressor is larger than the running time threshold value, the running time of the dehumidifier reaches the limit value, the detected water full signal can be determined to be accurate, and the compressor and the blower are controlled to stop at the moment; when the closing time of the micro switch is longer than the set value, the micro switch is controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate. By adopting the embodiment of the invention, the problem of false alarm caused by the fluctuation of the water level of the water tank can be avoided.
Drawings
FIG. 1 is a schematic view of a front external structure of a dehumidifier according to an embodiment of the present invention;
FIG. 2 is a schematic view of a dehumidifier when the water tank is taken out according to an embodiment of the present invention;
FIG. 3 is a schematic view of the external structure of the back of the dehumidifier according to the embodiment of the present invention;
FIG. 4 is a schematic view of the front internal structure of the dehumidifier according to the embodiment of the present invention;
FIG. 5 is a schematic view of the internal structure of the back of the dehumidifier according to the embodiment of the present invention;
FIG. 6 is an exploded view of a dehumidifier provided in an embodiment of the present invention;
FIG. 7 is a schematic diagram of a water pan and a water-full detection device according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a water-full detection device according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a water full detection device provided by an embodiment of the present invention when the water tank is not full;
FIG. 10 is a schematic diagram of a water full detection device provided by an embodiment of the present invention when a water tank is full;
FIG. 11 is a flowchart of the operation of a controller provided by an embodiment of the present invention;
FIG. 12 is a flowchart of a controller controlling a rotational speed of a blower according to an embodiment of the present invention;
FIG. 13 is another workflow diagram of a controller provided by an embodiment of the present invention;
fig. 14 is a flowchart of a dehumidifier control method according to an embodiment of the present invention.
Wherein, 100, dehumidifier; 1. a front plate; 2. a top cover; 3. a rear plate; 4. a base; 5. a partition plate; 6. a water tank; 7. an outer through hole; 7A, a hole cover; 8. an air outlet part; 8A, an air outlet opening; 9. a control panel; 10. a drain pipe; 11. an air inlet part; 12. a condenser; 13. an evaporator; 14. a compressor; 15. a water receiving tray; 15A, a water outlet; 16. an air blower; 16A, an air supply fan; 16B, an air supply motor; 17. a touch lever; 18. a micro-switch; 18A, a spring plate; 19 mounting plates; 20. a buoy; s1, a water tank space; s2, a mechanical chamber; m, acting force points of the touch rod and the elastic sheet.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 6, a dehumidifier 100 provided in an embodiment of the present application includes: a housing and a water tank 6 detachably mounted on the housing, the housing may be constituted by a combination of a plurality of members, as shown in fig. 2, and the housing may include: a base 4 forming the bottom appearance of the dehumidifier 100; a front plate 1 partially forming the front surface appearance of the dehumidifier 100; a rear plate 3 partially forming a rear surface appearance of the dehumidifier 100; portions of the front plate 1 and the rear plate 3 together form a side appearance of the dehumidifier 100; and a top cover 2 forming an upper surface appearance of the dehumidifier 100.
The rear plate 3 is provided with an air inlet part 11 (air inlet grid) which is provided with a plurality of air inlets through which air is sucked; the top cover 2 is provided with an air outlet 8 (air outlet grille) which is provided with an air outlet, and the air dehumidified inside the dehumidifier 100 can be discharged to the outside through the air outlet 8. The dehumidifier 100 may suck air through the air inlet 11 on the back surface and dehumidify the inside thereof, and then discharge the air through the air outlet 8 on the upper surface. The water tank 6 is disposed on the base 4, and the upper surface of the base 4 may be a water tank 6 disposition surface, and the water tank 6 is disposed on the water tank 6 disposition surface. The housing may be formed with an outer through hole 7 for placing the drain pipe 10, and may include a hole cover 7A positioned at the outer through hole 7, and the hole cover 7A is used for shielding the outer through hole 7 to prevent foreign matters such as dust and hair from entering. When the drain pipe 10 is connected to the dehumidifier 100, the hole cover 7A may be removed from the housing or the hole cover 7A may be opened to expose the outer through-hole 7, and a user may insert the drain pipe 10 into the outer through-hole 7 to connect the drain pipe 10 to the dehumidifier 100. The dehumidifier 100 may be provided with a control panel 9, and a user may operate the dehumidifier 100 through the control panel 9, and the control panel 9 may be provided on the top cover 2.
The water tank 6 may be installed at the front of the dehumidifier 100, the water tank 6 may be inserted and installed between the base 4 and the water pan 15 in the front-rear direction from the front of the dehumidifier 100, and when the insertion is completed, the front surface of the water tank 6 forms the front appearance of the dehumidifier 100 together with a portion of the front plate 1. When the water tank 6 is filled with condensed water, the user can remove the water tank 6 from the housing to empty the water tank 6 and then insert the water tank 6 back into the housing for installation. When the water tank 6 is installed, the water tank 6 may be inserted and accommodated in the water tank space S1. The water tank 6 may have a shape in which a front surface, a rear surface, a left side surface, a right side surface, and a bottom surface are closed, and an upper portion of the water tank 6 may be formed with an opening portion. The entire upper surface of the water tank 6 may be opened to constitute an opening, or a part of the upper surface thereof may be closed, and the unsealed part constitutes an opening.
The dehumidifier 100 may include a dehumidification system disposed inside the housing, the dehumidification system including a compressor 14, a condenser 12, an evaporator 13, and a blower 16. Also, the dehumidifier 100 may include: the condensed water produced in the operation process of the dehumidification system drops onto the water receiving disc 15 to be gathered, and the water receiving disc 15 discharges the condensed water into the water tank 6. Also, the dehumidifier 100 may include a partition 5, the partition 5 dividing the interior of the dehumidifier 100 into: a tank space S1 for accommodating the tank 6; and a machine room S2, wherein the compressor 14 is located in the machine room S2.
The dehumidifier 100 of the embodiment of the present invention dehumidifies the indoor air by condensing (cooling the air to remove moisture using a similar technique to a refrigerator). The indoor space may be dehumidified by a dehumidification system including the compressor 14, the condenser 12, the expansion mechanism, and the evaporator 13, and the compressor 14, the condenser 12, the expansion mechanism, and the evaporator 13 may be connected in this order by pipes to form a refrigerant circuit in which a refrigerant circulates. The condenser 12 and the evaporator 13 are provided with a plurality of fins for exchanging heat between the refrigerant and air. The compressor 14 compresses the refrigerant sucked from the evaporator 13 and discharges the refrigerant to the condenser 12. The expansion mechanism reduces the pressure of the refrigerant flowing from the condenser 12 to the evaporator 13, and expands the refrigerant. The evaporator 13 exchanges heat between the air sucked from the space to be dehumidified and the refrigerant, thereby cooling the air. The condenser 12 heats the air by exchanging heat between the refrigerant and the dry air cooled by the evaporator 13, and the condenser 12 functions as a reheater in the dehumidifier 100.
The compressor 14 is for compressing a refrigerant, and may be disposed in the machine chamber S2, and the compressor 14 may be placed on the upper surface of the base 4. The condenser 12 may be located between the evaporator 13 and the blower 16 along the air flow direction, and the condenser 12 may be disposed on the upper side of the water tray 15 to be opposite to the evaporator 13. In the condenser 12, the refrigerant compressed from the compressor 14 may be condensed by heat exchange with the air passing through the evaporator 13. In the evaporator 13, the refrigerant expanded by the expansion mechanism may be evaporated by heat exchange with air, and the evaporator 13 may be located before the condenser 12 in the air flow direction, and the evaporator 13 may be disposed on the upper side of the water tray 15.
The blower 16 may include a blower fan 16A and a blower motor 16B, and the blower motor 16B provides a driving force for driving the blower fan 16A to rotate. The blower 16 makes air outside the dehumidifier 100 sequentially pass through the evaporator 13 and the condenser 12 and then be discharged outside the dehumidifier 100, and may be located behind the condenser 12 in the air flow direction. The blower 16 may be disposed on the upper side of the water tray 15. The blower 16 may be formed with an air inlet on a surface facing the condenser 12, through which air is sucked, and an air outlet opening 8A may be formed on an upper surface of the blower 16, through which air is discharged through the air outlet portion 8 after passing through the air outlet opening 8A.
The water receiving tray 15 may be disposed substantially horizontally inside the dehumidifier 100, a drain opening 15A is provided in the water receiving tray 15, the drain opening 15A is located above the opening of the water tank 6, and condensed water in the water receiving tray 15 may drop into the water tank 6 through the drain opening 15A. The water tank space S1 and the machine room S2 may be formed below the water tray 15, and the condenser 12, the evaporator 13, and the blower 16 may be all disposed above the water tray 15.
The partition 5 may be formed at a lower portion of the water tray 15 and may support the water tray 15, a lower end of the partition 5 may be placed on the base 4, and the partition 5 may partition a space between the base 4 and the water tray 15 into: a tank space S1 for accommodating the tank 6; and a machine room S2, wherein the compressor 14 is located in the machine room S2.
The water receiving tray 15 has a three-way valve (not shown in the figure) disposed on the water outlet 15A, a first end of the three-way valve is connected to the water outlet 15A, a second end of the three-way valve is connected to a water inlet of the water tank 6 (i.e., an opening on the upper surface of the water tank 6), a third end of the three-way valve is connected to the drain pipe 10, and the drain pipe 10 is inserted into the external through hole 7 so as to be connected to the water receiving tray 15 through a third end connected to the three-way valve. The three-way valve is controlled by the refrigerator controller, the first end and the second end of the three-way valve are in a conducting state (namely, the water in the water receiving disc 15 is flowed into the water tank 6 by default) in an initial state, and the third end is in a closing state. When the third end of the three-way valve is conducted, the water drain pipe 10 leads out the water in the water receiving tray 15.
Further, a water pump may be disposed between the drain pipe 10 and the third end of the three-way valve, the water pump is connected with the third end of the three-way valve through a pump water inlet pipe, and a pump water outlet pipe is connected with the drain pipe 10, so that when the third end of the three-way valve is turned on, the condensed water contained in the water receiving tray 15 may be sequentially discharged to the outside of the dehumidifier 100 through the third end of the three-way valve, a pump water inlet pipe, a pump water outlet pipe, and the drain pipe 10.
Referring to fig. 7-8, a water-full detection device is disposed between the water-receiving tray 15 and the water tank 6, the water-full detection device is used for detecting whether the water stored in the water tank 6 reaches a water-full condition, the water-full detection device is disposed on the upper portion of the water tank 6, and comprises a float and a micro switch 18, the float is clamped on a mounting plate 19, the mounting plate 19 is disposed in the water-receiving tray 15, and the float enables the micro switch 18 to be closed when the water level of the water tank 6 reaches the water-full level. Wherein the float is composed of a float 20 and a touch rod 17, the float floats on the water surface of the condensed water in the water tank 6, the micro switch 18 comprises a spring piece 18A and a switch button (not shown in the figure), one end of the spring piece 18A is fixed on the base body, and the other end of the spring piece can move under the external force.
Referring to fig. 9, fig. 9 is a schematic diagram of the water full detection device provided by the embodiment of the invention when the water tank 6 is not full, when the water level of the water tank 6 is low, the float is at a lower position, and the acting force between the touch rod 17 and the elastic sheet 18A is 0, so that the elastic sheet 18A contacts with the switch button, that is, the micro switch 18 is turned off.
Referring to fig. 10, fig. 10 is a schematic diagram of the water full detection device provided in the embodiment of the present invention when the water tank 6 is full, when the water level in the water tank 6 reaches a certain height, the buoy 20 gradually rises along with the rising water level, so that the pressure action of the touch lever 17 on the elastic piece 18A is gradually increased, and the elastic piece 18A gradually breaks away from the switch button, that is, the micro switch 18 is closed.
In the embodiment of the present invention, the controller is configured to control the compressor to maintain the current rotation speed and reduce the rotation speed of the blower 16 when the micro switch 18 is detected to be closed and the first closing time period is longer than the first set time period; when the continuous running time of the compressor is longer than a running time threshold or the second closing time of the micro switch 18 is longer than a second set time, controlling the compressor and the blower 16 to stop running and sending out prompt information; the second closing time period is a closing time period of the micro switch 18 which is accumulated again after the first closing time period is longer than the second set time period.
The controller is further configured to: when the continuous operation duration of the compressor is less than or equal to the operation duration threshold and the second closing duration of the micro switch 18 is less than or equal to the second set duration, the compressor is controlled to maintain the current rotation speed for continuous operation, and the blower 16 is controlled to maintain the current rotation speed for continuous operation.
Referring to fig. 11, fig. 11 is a flowchart of the operation of the controller according to the embodiment of the present invention, including steps S101 to S112:
s101, the dehumidifier operates normally. The user can control the dehumidifier to start by sending a starting instruction, or the dehumidifier can start at fixed time. After the dehumidifier is started, the compressor normally operates, and the air blower normally operates.
S102, judging whether the micro switch is closed, if so, entering a step S103, and if not, continuing to execute the step S101. The micro switch is closed, which means that the water level is higher at this time, and the water tank is possibly full, or the micro switch is closed due to water level fluctuation caused by movement of the dehumidifier, and the water tank is not full at this time, so that the judgment of the subsequent steps is needed.
S103, accumulating the first closing time t1 of the micro switch.
S104, judging whether t1 is satisfied>t MAX1 If so, the process proceeds to step S105,if not, go on to step S101. When the micro switch is closed for the first time, starting timing, and judging the first closing time period t1 and a preset first setting time period t MAX1 The relation of the first set time period t MAX1 The primary closing time length value of the micro switch is specified for primary judgment, and can be 2s for example. If t1 is less than or equal to t MAX1 Indicating that the micro-switch is closed for a short time, it can be determined that the micro-switch is closed due to the water level fluctuation, and the dehumidifier continues to operate.
S105, when t1 is satisfied>t MAX1 And when the air blower is in a normal state, controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower. In this case, it means that the closing time of the micro switch is longer, and it is possible that the judgment in the following steps S106 to S112 is needed again, but in order to avoid the micro switch closing phenomenon caused by the water full, a buffer stage is needed for the water tank, and the compressor is controlled to continue to operate, and the rotation speed of the blower is needed to be reduced, so that the rotation speed of the blower can be reduced, and the indoor air fed into the dehumidifier can be reduced, thereby reducing the condensed water condensed by the evaporator 13. And meanwhile, the first closing time period t1 is cleared.
Further, in this process, the controller is further configured to: when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length, the current rotating speed of the air blower is obtained; when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed; and when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
For example, referring to fig. 12, step S105 further includes steps S1051 to S1054:
s1051, acquiring the current rotating speed of the air blower;
s1052, judging whether the current rotating speed of the air blower is the lowest rotating speed, if so, proceeding to step S1053; if not, go to step S1054;
s1053, when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed;
and S1054, when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
Specifically, there are two ways to reduce the blower speed. The method comprises the steps of searching a plurality of prestored rotating speed gear information, and reducing the rotating speed of the air blower according to the rotating speed gear information; for example, the pre-stored gear information includes a high gear, a medium gear, and a low gear (minimum rotation speed), and can be reduced to the medium gear or the low gear when the blower is in the high gear. The other is to acquire the humidity information of the environment where the dehumidifier is located, search a corresponding rotation speed adjustment value according to the humidity information, and reduce the rotation speed of the air blower according to the rotation speed adjustment value; for example, the humidity is divided into a plurality of grades in advance, each grade is respectively corresponding to one rotating speed adjusting value, the corresponding rotating speed adjusting value is obtained by matching the humidity grade after the humidity information is obtained, the rotating speed of the air blower is required to be reduced by the rotating speed adjusting value on the basis of the current rotating speed, and if the reduced value is smaller than the lowest rotating speed, the current rotating speed is directly adjusted to be the lowest rotating speed.
S106, obtaining the continuous operation duration h1 of the compressor. The starting time of the continuous operation duration of the compressor is the time point when the dehumidifier restarts the compressor after the water fullness condition is solved for the last time; for example, after the water in the water tank is poured out by the compressor, the time for restarting the compressor is 8:00 (this time is the starting time), after two hours of operation, the dehumidifier is turned off at 10:00, the dehumidifier is restarted at 14:00, and the dehumidifier is turned off at 16:00, so that the time is cut off to 16:00, and the continuous operation duration of the compressor is 4 hours.
S107, judging whether h1 is satisfied>h MAX1 If yes, go to step S112, otherwise go to step S108. The operation time length threshold h MAX1 According to the capacity of the water tank and the dehumidification amount in unit time, calculating to obtain the water tank; the unit time dehumidification amount is the dehumidification amount of the dehumidifier under the rated working condition. Rated operating mode: indicating the amount of dehumidification in the mouth areaThe fixed working condition, such as North America, the rated working condition is: the temperature of 18.3/13.7 ℃,115V/60Hz, strong wind and humidity controller are set at minimum humidity or continuous grade, the transverse air plates are parallel outwards, and the longitudinal air plates are vertical outwards. Similarly, the dehumidification amount per unit time Q: the dehumidification amount per unit time under the rated working condition is generally embodied in nameplates, such as dehumidifier nameplates in North America. Capacity V of the tank: obtained through the instruction of the dehumidifier. Then the run length threshold h MAX1 =v/Q, unit h.
Further, the calculated operation time threshold h MAX1 The time period from the operation of the detected compressor under the rated working condition to the full water of the water tank under the ideal condition is considered that the dehumidifier can be intermittently operated, and the operation time period threshold h can be prolonged according to the shutdown time period of the dehumidifier after the water in the primary water tank is cleared MAX1 For example, when the continuous operation duration of the compressor is to be judged, firstly, the accumulated shutdown duration of the dehumidifier is obtained, the longer the accumulated shutdown duration is, the more water evaporated in the water tank is indicated, the longer the continuous operation duration of the dehumidifier from the time when the water tank is full is required, and the corresponding operation duration threshold h is required MAX1 The larger the value to be prolonged, the controller can be pre-stored with the accumulated machine halt time length and the corresponding threshold h to be prolonged MAX1 A plurality of time-out duration ranges can be set, each time-out duration range corresponds to one time-out duration value, then the time-out duration range to which the time-out duration value belongs is searched according to the accumulated time-out duration obtained in real time, the corresponding time-out duration value is obtained, and then the time-out duration value is compared with the running duration threshold h MAX1 The addition is used as a new run-length threshold.
S108, when h1 is less than or equal to h MAX1 T2 is less than or equal to t MAX2 When no action signal is executed, the compressor and the blower are controlled to maintain the current rotating speed;
s109, judging whether the micro switch is closed, if so, entering a step S110, and if not, re-executing the step S109;
s110, accumulating the second closing time t2 of the micro switch. And the second closing time period t2 is the time period when the micro switch is in the closing state continuously after t 1.
S111, judging whether t2 is satisfied>t MAX2 If yes, go to step S112, otherwise go to step S108;
s112, if h1 is satisfied>h MAX1 Or t2>t MAX2 And controlling the compressor and the air blower to stop running and sending out prompt information. When the continuous operation time of the compressor is greater than the operation time threshold, namely h1 is satisfied>h MAX1 Indicating that the operating time of the dehumidifier has reached its limit value, it can be determined that the detected water-full signal is accurate, at which time the compressor and blower are controlled to be stopped. When the second closing time length of the micro switch is longer than the second set time length, namely t2 is satisfied>t MAX2 The closing time of the micro switch is long enough, the compressor and the air blower are controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate. By adopting the embodiment of the invention, the problem of false alarm caused by the fluctuation of the water level of the water tank can be avoided.
In the embodiment of the invention, when the water level of the water tank is higher, the water level fluctuation leads to the enhancement of the acting force between the touch rod and the micro switch elastic sheet, so that when the micro switch is closed for a plurality of seconds, the compressor and the blower cannot be stopped immediately, and only when a certain parameter condition specified in the invention is continuously met (h 1>h MAX1 Or t2>t MAX2 ) The machine is stopped, the false alarm phenomenon caused by the water level fluctuation is improved, and the reliability of the system response is improved.
Further, the prompt information can be at least one of indication lamp prompt information, voice prompt information and text prompt information, and the dehumidifier can be provided with an indication lamp which is turned on when water is full; the dehumidifier can be further provided with a voice playing device, when the water is full, the voice playing device plays a voice prompt, and the voice prompt can be a ring tone or a word description (such as 'water tank full, water pouring request') preset in the dehumidifier for 10s; the dehumidifier can also interact with a client (such as a user mobile phone) remotely through WiFi or a server, send the water fullness prompt to the client in a text form, and prompt the user in time.
Further, when the prompt message is sent, if the user does not pour water for a long time, the dehumidifier is in a stop state all the time, and the dehumidifier can be combined with the drain pipe 10 to continue the dehumidification operation, the controller is further configured to: after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, the second end of the three-way valve is closed, and the compressor and the air blower are started; wherein the shutdown condition includes at least one of: and the running time of the dehumidifier reaches the preset stop time and a shutdown instruction is received.
For example, referring to fig. 13, fig. 13 is another workflow diagram of a controller provided in an embodiment of the present invention, after step S112 is performed, the controller is further configured to perform steps S113 to S118:
s113, accumulating the time length h2 after the prompt message is sent.
S114, judging whether h2 is satisfied>h MAX2 If yes, go to step S115, if not, go to step S113.
S115, when h2 is satisfied>h MAX Judging whether the water tank taking-out operation is not detected in the time period h2, if so, entering a step S116, otherwise, entering a step S118; if the water tank is removed, the dehumidifier and the blower are still kept in a stop state until the user installs the water tank and starts. If satisfy h2 >h MAX2 And no removal operation of the water tank is detected within the h2 period, which means that the user has not poured the water in the water tank after the water tank is full at this time. The removal operation may be detected by a detector installed at the junction of the water tank and the dehumidifier.
And S116, if the water tank taking-out operation is not performed, continuously judging whether the dehumidifier does not meet the operation stopping condition, if so, proceeding to step S117, and if not, proceeding to step S118.
And S117, if the dehumidifier does not meet the stop operation condition, controlling the first end and the third end of the three-way valve to be conducted, closing the second end of the three-way valve, and starting the compressor and the blower. At this time, it is indicated that the dehumidifier should continue the dehumidification operation according to the original schedule (the user is not shut down all the time, or the dehumidifier does not reach the shutdown time preset by the user), in order to continue the dehumidification at this time, the drain pipe may be used to drain water, at this time, the channel from the water receiving tray to the drain pipe is opened (the first end and the third end of the three-way valve are opened), the channel from the water receiving tray to the water tank is closed (the second end of the three-way valve is closed), the condensed water received by the water receiving tray does not flow into the water tank any more, but flows out all through the drain pipe, the user may place the water bucket at the drain pipe to receive water, or the user may place the outlet of the drain pipe to a toilet or the like and flow out through the sewer.
And S118, if the dehumidifier meets the stop operation condition, controlling the compressor and the blower to maintain the stop state. If the stop operation condition is met, the dehumidifier just needs to be shut down at the moment, and the compressor and the blower maintain the shut down state.
Compared with the prior art, the dehumidifier disclosed by the embodiment of the invention does not immediately control the compressor and the blower to stop after the micro switch is closed, but maintains the rotation speed of the compressor and reduces the rotation speed of the blower, and the reduction of the rotation speed of the blower can reduce indoor air fed into the dehumidifier, so that condensed water condensed by the evaporator is reduced, and the water tank is a buffering stage, at the moment, the continuous running time of the compressor is further detected, the closing time of the micro switch is re-detected, and when the continuous running time of the compressor is longer than the running time threshold value or the second closing time of the micro switch is longer than the second setting time, the fact that the water tank is really full of water at the moment is proved, and the compressor and the blower are controlled to stop running is proved. When the continuous running time of the compressor is larger than the running time threshold value, the running time of the dehumidifier reaches the limit value, the detected water full signal can be determined to be accurate, and the compressor and the blower are controlled to stop at the moment; when the closing time of the micro switch is longer than the set value, the micro switch is controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate. By adopting the embodiment of the invention, the problem of false alarm caused by the fluctuation of the water level of the water tank can be avoided.
Referring to fig. 14, fig. 14 is a flowchart of a dehumidifier control method according to an embodiment of the present invention. The dehumidifier control method is implemented by a controller in the dehumidifier, a water full detection device for detecting whether water stored in a water tank reaches a water full condition is arranged in the dehumidifier, the water full detection device comprises a floater and a micro switch, and the micro switch is closed when the water level of the water tank reaches the water full level; the dehumidifier control method includes:
s1, when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than a first set time length, controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower;
s2, when the continuous operation time length of the compressor is longer than an operation time length threshold value or the second closing time length of the micro switch is longer than a second set time length, controlling the compressor and the air blower to stop operation; the second closing time length is a closing time length which is accumulated again after the micro switch is longer than a second set time length when the first closing time length is longer than the first closing time length;
s3, sending out prompt information.
Further, the dehumidifier control method further comprises:
When the continuous operation time length of the compressor is smaller than or equal to the operation time length threshold value and the second closing time length of the micro switch is smaller than or equal to the second set time length, controlling the compressor to maintain the current rotation speed to continue operation, and controlling the air blower to maintain the current rotation speed to continue operation.
Specifically, in step S1, the user may control the dehumidifier to start by sending a start instruction, or the dehumidifier may start at a fixed time. After the dehumidifier is started, the compressor normally operates, and the air blower normally operates. The micro switch is closed, which means that the water level is higher at this time, and the water tank is possibly full, or the micro switch is closed due to water level fluctuation caused by movement of the dehumidifier, and the water tank is not full at this time, so that the judgment of the subsequent steps is needed.
When the micro switch is closed for the first time, starting timing, and judging the first closing time period t1 and a preset first setting time period t MAX1 The relation of the first set time period t MAX1 The primary closing time length value of the micro switch is specified for primary judgment, and can be 2s for example. If t1 is less than or equal to t MAX1 Indicating that the micro-switch is closed for a short time, it can be determined that the micro-switch is closed due to the water level fluctuation, and the dehumidifier continues to operate.
At t1 is satisfied>t MAX1 And when the air blower is in a normal state, controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower. At this time, it means that the closing time of the micro switch is longer, and it is possible that the closing time is not caused by the fluctuation of the water level, and the judgment in the subsequent step S2 needs to be performed again, but at this time, in order to avoid the micro switch closing phenomenon caused by the fact that the water is full, a buffer stage is needed for the water tank, at this time, the compressor is controlled to continue to operate, and the rotating speed of the air blower needs to be reduced, so that the rotating speed of the air blower can be reduced, and the indoor air fed into the dehumidifier can be reduced, so that condensed water condensed by the evaporator is reduced. And meanwhile, the first closing time period t1 is cleared.
Further, in this process, when the micro switch is detected to be closed and the first closing time period is longer than the first set time period, and the compressor is controlled to maintain the current rotation speed, the method further includes steps S11 to S13:
s11, acquiring the current rotating speed of the air blower;
s12, when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed;
and S13, when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
Specifically, there are two ways to reduce the blower speed. The method comprises the steps of searching a plurality of prestored rotating speed gear information, and reducing the rotating speed of the air blower according to the rotating speed gear information; for example, the pre-stored gear information includes a high gear, a medium gear, and a low gear (minimum rotation speed), and can be reduced to the medium gear or the low gear when the blower is in the high gear. The other is to acquire the humidity information of the environment where the dehumidifier is located, search a corresponding rotation speed adjustment value according to the humidity information, and reduce the rotation speed of the air blower according to the rotation speed adjustment value; for example, the humidity is divided into a plurality of grades in advance, each grade is respectively corresponding to one rotating speed adjusting value, the corresponding rotating speed adjusting value is obtained by matching the humidity grade after the humidity information is obtained, the rotating speed of the air blower is required to be reduced by the rotating speed adjusting value on the basis of the current rotating speed, and if the reduced value is smaller than the lowest rotating speed, the current rotating speed is directly adjusted to be the lowest rotating speed.
Specifically, in step S2, a continuous operation duration h1 of the compressor and a second closing duration t2 of the micro switch are obtained, and the continuous operation duration h1 and an operation duration threshold h are set MAX1 Comparing the second closing time period t2 with a second set time period t MAX2 And (5) comparing.
If h1 is less than or equal to h MAX1 T2 is less than or equal to t MAX2 And when no action signal is executed, controlling the compressor and the blower to maintain the current rotating speed.
If satisfy h1>h MAX1 And controlling the compressor and the air blower to stop running and sending out prompt information. When the continuous operation time of the compressor is greater than the operation time threshold, namely h1 is satisfied>h MAX1 Indicating that the operating time of the dehumidifier has reached its limit value, it can be determined that the detected water-full signal is accurate, at which time the compressor and blower are controlled to be stopped.
If t2 is satisfied>t MAX2 And controlling the compressor and the air blower to stop running and sending out prompt information. When the second closing time length of the micro switch is longer than the second set time length, namely t2 is satisfied>t MAX2 The closing time of the micro switch is long enough, the compressor and the air blower are controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate.
The starting time of the continuous operation duration of the compressor is the time point when the dehumidifier restarts the compressor after the water fullness condition is solved for the last time; for example, after the water in the water tank is poured out by the compressor, the time for restarting the compressor is 8:00 (this time is the starting time), after two hours of operation, the dehumidifier is turned off at 10:00, the dehumidifier is restarted at 14:00, and the dehumidifier is turned off at 16:00, so that the time is cut off to 16:00, and the continuous operation duration of the compressor is 4 hours.
The operation time length threshold h MAX1 According to the capacity of the water tank and the dehumidification amount in unit time, calculating to obtain the water tank; the unit time dehumidification amount is the dehumidification amount of the dehumidifier under the rated working condition. Rated operating mode: the rated working condition of dehumidification test in the mouth area is pointed out, for example, in North America, the rated working condition is: the temperature of 18.3/13.7 ℃,115V/60Hz, strong wind and humidity controller are set at minimum humidity or continuous grade, the transverse air plates are parallel outwards, and the longitudinal air plates are vertical outwards. Similarly, the dehumidification amount per unit time Q: the dehumidification amount per unit time under the rated working condition is generally embodied in nameplates, such as dehumidifier nameplates in North America. Capacity V of the tank: obtained through the instruction of the dehumidifier. Then the run length threshold h MAX1 =v/Q, unit h.
Further, the calculated operation time threshold h MAX1 The time period from the operation of the detected compressor under the rated working condition to the full water of the water tank under the ideal condition is considered that the dehumidifier can be intermittently operated, and the operation time period threshold h can be prolonged according to the shutdown time period of the dehumidifier after the water in the primary water tank is cleared MAX1 Such asWhen the continuous operation time length of the compressor is to be judged, firstly acquiring the accumulated stop time length of the dehumidifier, wherein the longer the accumulated stop time length is, the more water evaporated in the water tank is indicated, the longer the continuous operation time length from the operation of the dehumidifier to the full operation of the water tank is required, and the corresponding operation time length threshold h is required MAX1 The larger the value to be prolonged, the controller can be pre-stored with the accumulated machine halt time length and the corresponding threshold h to be prolonged MAX1 A plurality of time-stop length ranges can be arranged, each time-stop length range corresponds to one time-stop length value, the time-stop length range to which the time-stop length range belongs is searched according to the accumulated time-stop length calculated in real time, the corresponding time-stop length value is obtained, and then the time-stop length value is compared with the running time length threshold h MAX1 The addition is used as a new run-length threshold.
Specifically, in step S3, the prompt information may be at least one of an indicator light prompt information, a voice prompt information, and a text prompt information, and the dehumidifier may be provided with an indicator light, and the indicator light is turned on when water is full; the dehumidifier can be further provided with a voice playing device, when the water is full, the voice playing device plays a voice prompt, and the voice prompt can be a ring tone or a word description (such as 'water tank full, water pouring request') preset in the dehumidifier for 10s; the dehumidifier can also interact with a client (such as a user mobile phone) remotely through WiFi or a server, send a water fullness prompt to the client in a text form, and prompt a user in time.
In the embodiment of the invention, when the water level of the water tank is higher, the water level fluctuation leads to the enhancement of the acting force between the touch rod and the micro switch elastic sheet, so that when the micro switch is closed for a plurality of seconds, the compressor and the blower cannot be stopped immediately, and only when a certain parameter condition specified in the invention is continuously met (h 1>h MAX1 Or t2>t MAX2 ) The machine is stopped, the false alarm phenomenon caused by the water level fluctuation is improved, and the reliability of the system response is improved.
Further, the dehumidifier further comprises a water receiving disc and a drain pipe, wherein the water receiving disc is respectively connected with the water tank and the drain pipe through a three-way valve, a first end of the three-way valve is connected with the water outlet 15A, a second end of the three-way valve is connected with a water inlet of the water tank, and a third end of the three-way valve is connected with the drain pipe; the three-way valve is in a conducting state at the first end and the second end in an initial state, and the third end is in a closing state; the dehumidifier control method further comprises steps S4 to S5:
s4, after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, controlling the first end and the third end of the three-way valve to be conducted, and closing the second end of the three-way valve; wherein the shutdown condition includes at least one of: the running time of the dehumidifier reaches the preset stopping time and a stopping instruction is received;
S5, starting the compressor and the blower.
And when the prompt information is sent, if the user does not pour water for a long time, the dehumidifier is always in a stop state, and the dehumidifier can be combined with the drain pipe to continue dehumidifying operation. Accumulating the time length h2 after sending the prompt information, and judging whether h2 is satisfied or not>h MAX2 . In the condition of meeting h2>h MAX And judging whether the taking-out operation of the water tank is not detected in the period of h2, and if the water tank is removed, the dehumidifier and the blower still remain in a stop state until a user installs the water tank and starts. If satisfy h2>h MAX2 And no removal operation of the water tank is detected within the h2 period, which means that the user has not poured the water in the water tank after the water tank is full at this time. The removal operation may be detected by a detector installed at the junction of the water tank and the dehumidifier. If the water tank is not taken out, continuing to judge whether the dehumidifier does not meet the stop operation condition.
If the stop operation condition is met, the dehumidifier just needs to be shut down at the moment, and the compressor and the blower maintain the shut down state. If the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, the second end of the three-way valve is closed, and the compressor and the air blower are started. At this time, it is indicated that the dehumidifier should continue the dehumidification operation according to the original schedule (the user is not shut down all the time, or the dehumidifier does not reach the shutdown time preset by the user), in order to continue the dehumidification at this time, the drain pipe may be used to drain water, at this time, the channel from the water receiving tray to the drain pipe is opened (the first end and the third end of the three-way valve are opened), the channel from the water receiving tray to the water tank is closed (the second end of the three-way valve is closed), the condensed water received by the water receiving tray does not flow into the water tank any more, but flows out all through the drain pipe, the user may place the water bucket at the drain pipe to receive water, or the user may place the outlet of the drain pipe to a toilet or the like and flow out through the sewer.
Compared with the prior art, the dehumidifier control method disclosed by the embodiment of the invention does not immediately control the compressor and the blower to stop after the micro switch is closed, but maintains the rotation speed of the compressor unchanged and reduces the rotation speed of the blower, and the reduction of the rotation speed of the blower can reduce indoor air fed into the dehumidifier, so that condensed water condensed by the evaporator is reduced, and the water tank is provided with a buffer stage, at the moment, the continuous running time of the compressor is further detected, and the closing time of the micro switch is re-detected, and when the continuous running time of the compressor is longer than the running time threshold value or the second closing time of the micro switch is longer than the second set time, the fact that the water tank is full of water at the moment is proved, and the compressor and the blower are controlled to stop running is proved. When the continuous running time of the compressor is larger than the running time threshold value, the running time of the dehumidifier reaches the limit value, the detected water full signal can be determined to be accurate, and the compressor and the blower are controlled to stop at the moment; when the closing time of the micro switch is longer than the set value, the micro switch is controlled to stop, if the micro switch is closed due to water level fluctuation, the re-detected closing time is short or the closing time is 0, and therefore the water full signal can be determined to be accurate. By adopting the embodiment of the invention, the problem of false alarm caused by the fluctuation of the water level of the water tank can be avoided.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (10)

1. A dehumidifier, comprising:
the dehumidification system is used for adjusting the humidity of indoor air and comprises a compressor, a condenser, an evaporator and an air blower which are arranged in the dehumidifier shell;
a water tank for storing condensed water generated from an operation process of the dehumidification system;
the water full detection device is used for detecting whether the water stored in the water tank reaches a water full condition or not, is arranged at the upper part of the water tank and comprises a floater and a micro switch, and the micro switch is closed when the water level of the water tank reaches the water full level;
the water receiving disc is arranged below the evaporator and used for receiving condensed water generated in the operation process of the dehumidification system, a three-way valve is arranged on a water outlet of the water receiving disc, a first end of the three-way valve is connected with the water outlet, a second end of the three-way valve is connected with a water inlet of the water tank, and a third end of the three-way valve is connected with a drain pipe; the three-way valve is in a conducting state at the first end and the second end in an initial state, and the third end is in a closing state;
The drain pipe is used for guiding out water in the water receiving disc when the third end of the three-way valve is conducted;
the controller is used for controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length; when the continuous running time of the compressor is longer than a running time threshold or the second closing time of the micro switch is longer than a second set time, controlling the compressor and the air blower to stop running, and sending out prompt information; the second closing time length is a closing time length which is accumulated again after the micro switch is longer than a second set time length when the first closing time length is longer than the first closing time length;
after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, the second end of the three-way valve is closed, and the compressor and the air blower are started.
2. The dehumidifier of claim 1, wherein the controller is further configured to: when the continuous operation time length of the compressor is smaller than or equal to the operation time length threshold value and the second closing time length of the micro switch is smaller than or equal to the second set time length, controlling the compressor to maintain the current rotation speed to continue operation, and controlling the air blower to maintain the current rotation speed to continue operation.
3. A dehumidifier as claimed in claim 1 or claim 2 wherein the start time of the duration of operation of the compressor is the point in time when the dehumidifier was restarted after the water-filled condition was last removed; the operation time threshold is calculated according to the capacity of the water tank and the dehumidification amount in unit time; the unit time dehumidification amount is the dehumidification amount of the dehumidifier under the rated working condition.
4. The dehumidifier of claim 1, wherein the off-air condition comprises at least one of: and the running time of the dehumidifier reaches the preset stop time and a shutdown instruction is received.
5. The dehumidifier of claim 1, wherein the controller is further configured to: when the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length, the current rotating speed of the air blower is obtained; when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed; and when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
6. The dehumidifier of claim 5, wherein said reducing the rotational speed of said blower comprises:
Searching a plurality of prestored rotating speed gear information, and reducing the rotating speed of the air blower according to the rotating speed gear information; or alternatively, the first and second heat exchangers may be,
and acquiring humidity information of the environment where the dehumidifier is located, searching a corresponding rotating speed adjusting value according to the humidity information, and reducing the rotating speed of the air blower according to the rotating speed adjusting value.
7. The dehumidifier control method is characterized in that a dehumidifier system is arranged in the dehumidifier and used for adjusting the humidity of indoor air, and the dehumidifier control method comprises a compressor, a condenser, an evaporator and an air blower which are arranged in a shell of the dehumidifier; the dehumidifier is internally provided with a water full detection device for detecting whether water stored in the water tank reaches a water full condition or not, the water full detection device comprises a floater and a micro switch, and the micro switch is closed when the water level of the water tank reaches the water full level; the dehumidifier further comprises a water receiving disc and a drain pipe, wherein the water receiving disc is arranged below the refrigerator evaporator and used for receiving condensed water generated in the operation process of the refrigerator dehumidification system, a three-way valve is arranged on a drain outlet of the water receiving disc, a first end of the three-way valve is connected with the drain outlet, a second end of the three-way valve is connected with a water inlet of the water tank, and a third end of the three-way valve is connected with the drain pipe; the three-way valve is in a conducting state at the first end and the second end in an initial state, and the third end is in a closing state; the drain pipe is used for guiding out water in the water receiving disc when the third end of the three-way valve is conducted; the dehumidifier control method includes:
When the micro switch is detected to be closed and the first closing time length of the micro switch is longer than the first set time length, controlling the compressor to maintain the current rotating speed and reducing the rotating speed of the air blower;
when the continuous running time of the compressor is longer than a running time threshold or the second closing time of the micro switch is longer than a second set time, controlling the compressor and the air blower to stop running; the second closing time length is a closing time length which is accumulated again after the micro switch is longer than a second set time length when the first closing time length is longer than the first closing time length;
sending out prompt information;
after the prompt information is sent out, if the taking-out operation of the water tank is not detected within a preset time period and the dehumidifier does not meet the stop operation condition, the first end and the third end of the three-way valve are controlled to be conducted, the second end of the three-way valve is closed, and the compressor and the air blower are started.
8. The dehumidifier control method of claim 7, further comprising:
when the continuous operation time length of the compressor is smaller than or equal to the operation time length threshold value and the second closing time length of the micro switch is smaller than or equal to the second set time length, controlling the compressor to maintain the current rotation speed to continue operation and controlling the air blower to maintain the current rotation speed to continue operation;
The starting time of the continuous operation duration of the compressor is a time point when the dehumidifier restarts the compressor after the dehumidifier is in the water fullness condition for the last time; the operation time threshold is calculated according to the capacity of the water tank and the dehumidification amount in unit time; the unit time dehumidification amount is the dehumidification amount of the dehumidifier under the rated working condition.
9. The dehumidifier control method of claim 7, wherein the shutdown condition comprises at least one of: and the running time of the dehumidifier reaches the preset stop time and a shutdown instruction is received.
10. The dehumidifier control method of claim 7, wherein upon detecting that the microswitch is closed and that the first closure time period is greater than a first set time period, and controlling the compressor to maintain a current rotational speed, the method further comprises:
acquiring the current rotating speed of the air blower;
when the current rotating speed of the air blower is the preset lowest rotating speed, controlling the rotating speed of the air blower to be maintained at the current rotating speed;
and when the current rotating speed of the air blower is not the lowest rotating speed, reducing the rotating speed of the air blower.
CN202210456320.2A 2022-04-28 2022-04-28 Dehumidifier and control method thereof Active CN114777223B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005282902A (en) * 2004-03-29 2005-10-13 Toyotomi Co Ltd Full-water control device for air conditioner
CN106949539A (en) * 2017-03-16 2017-07-14 广东美的制冷设备有限公司 Air-conditioner, cleaning control method and device
CN111023333A (en) * 2019-12-27 2020-04-17 海信（广东）空调有限公司 Dehumidifier and dehumidifier control method
CN111720969A (en) * 2020-06-16 2020-09-29 海信（山东）空调有限公司 Air conditioner and control method thereof
CN113959070A (en) * 2021-10-09 2022-01-21 珠海格力电器股份有限公司 Control method of dehumidifier and dehumidifier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005282902A (en) * 2004-03-29 2005-10-13 Toyotomi Co Ltd Full-water control device for air conditioner
CN106949539A (en) * 2017-03-16 2017-07-14 广东美的制冷设备有限公司 Air-conditioner, cleaning control method and device
CN111023333A (en) * 2019-12-27 2020-04-17 海信（广东）空调有限公司 Dehumidifier and dehumidifier control method
CN111720969A (en) * 2020-06-16 2020-09-29 海信（山东）空调有限公司 Air conditioner and control method thereof
CN113959070A (en) * 2021-10-09 2022-01-21 珠海格力电器股份有限公司 Control method of dehumidifier and dehumidifier

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