CN113970137B - Dehumidifier and operation control method thereof - Google Patents

Dehumidifier and operation control method thereof Download PDF

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Publication number
CN113970137B
CN113970137B CN202111429366.7A CN202111429366A CN113970137B CN 113970137 B CN113970137 B CN 113970137B CN 202111429366 A CN202111429366 A CN 202111429366A CN 113970137 B CN113970137 B CN 113970137B
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humidity
temperature
fan
evaporator
compressor
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CN113970137A (en
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张书铭
王新民
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Hisense Guangdong Air Conditioning Co Ltd
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Hisense Guangdong Air Conditioning Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—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 in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • 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
    • 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
    • F24F11/62—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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • F24F2110/10—Temperature
    • 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)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Human Computer Interaction (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)
  • Drying Of Gases (AREA)

Abstract

The invention discloses a dehumidifier and an operation control method thereof. After the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not, and whether the operation stopping time of a compressor and a fan is greater than a second preset time or not; and if the requirements are met, controlling the compressor and the fan to start and operate. Then, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not; and if the temperature of the surface of the evaporator is met, acquiring the surface temperature of the evaporator, determining a corresponding control strategy according to the surface temperature, and controlling the compressor and the fan to operate or stop operating according to the control strategy. By adopting the embodiment of the invention, the problem of inaccurate humidity sampling of the dehumidifier caused by the low-temperature state of the evaporator can be solved, and the use experience of a user is effectively improved.

Description

Dehumidifier and operation control method thereof
Technical Field
The invention relates to the technical field of dehumidifiers, in particular to a dehumidifier and an operation control method of the dehumidifier.
Background
A dehumidifier is a device that reduces the relative humidity in the air by refrigeration to keep the space relatively dry, and is widely used in the fields of household articles, medicines, and the like. In the existing dehumidifier, an evaporator and a condenser are close to each other in the front and back, when a fan operates, indoor air flows in from the evaporator, after temperature reduction, water vapor is condensed into water and flows into a water tank, and hot air is blown out indoors through high-temperature heating of the condenser, so that the indoor air humidity is reduced, and the space comfort is improved.
At present, humidity detection module places at the dehumidifier back usually, is close to evaporimeter one side promptly, and when compressor operation, fan operation like this, the room air is earlier through humidity detection module, and the evaporimeter is flowed into again, guarantees the accuracy that air humidity detected. In addition, in order to improve energy efficiency and save energy, when the indoor humidity is detected to reach the preset humidity value, the compressor stops running, and the fan also stops running.
However, the inventors found that the prior art has at least the following problems: when the press is shut down, and the fan is shut down, the temperature of evaporimeter was still in the low temperature state this moment, and humidity detection module is owing to be close to the evaporimeter, and its ambient temperature who detects receives the influence of evaporimeter temperature easily, and then influences the degree of accuracy of calculation ambient humidity to because the change of evaporimeter temperature, can lead to the ambient humidity value unstability that shows on the display panel, the condition that appears short time jump even and continuously rise, seriously influences user's use physical examination.
Disclosure of Invention
The embodiment of the invention aims to provide a dehumidifier and an operation control method of the dehumidifier, which can solve the problem of inaccurate humidity sampling of the dehumidifier caused by the low-temperature state of an evaporator and effectively improve the use experience of a user.
In order to achieve the above object, an embodiment of the present invention provides a dehumidifier, including:
the dehumidifier body is internally provided with an evaporator, a compressor and a fan;
the environment humidity detector is arranged in the dehumidifier body and used for detecting the current environment humidity in real time;
the evaporator temperature sensor is arranged on the evaporator and used for detecting the surface temperature of the evaporator;
a controller connected to the compressor, the fan, the ambient humidity detector and the evaporator temperature sensor, respectively, for:
after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
when the current environment humidity is greater than the first set humidity threshold value and the operation stopping duration is greater than the second preset duration, controlling the compressor and the fan to start to operate;
after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not;
when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
and acquiring a control strategy corresponding to the surface temperature of the evaporator according to the corresponding relation between the preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy.
As an improvement of the above scheme, the ambient humidity detector comprises an ambient temperature sensor, a humidity-sensitive sensor and a humidity calculator;
the environment temperature sensor is used for detecting the current environment temperature in real time when the device is in a first working mode to obtain a current environment temperature value; when the working mode is in a second working mode, acquiring a preset constant environment temperature value as a current environment temperature value;
the humidity-sensitive sensor is used for detecting the current humidity-sensitive resistance value;
and the humidity calculator is used for calculating the current environment humidity according to the current environment temperature value and the current humidity sensitive resistance value.
As an improvement of the above solution, the control strategy corresponding to the evaporator surface temperature being equal to or lower than the first temperature threshold includes:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time;
after the fan continues to operate for a fourth preset time, judging whether the surface temperature of the evaporator is greater than or equal to a second temperature threshold value or not; wherein the second temperature threshold is greater than the first temperature threshold;
and if the surface temperature of the evaporator is greater than or equal to the second temperature threshold value, controlling the fan to stop running and controlling the ambient temperature sensor to be in the first working mode.
As an improvement of the above solution, the control strategy corresponding to the surface temperature of the evaporator being equal to or less than the first temperature threshold further includes:
if the surface temperature of the evaporator is lower than the second temperature threshold, controlling the fan to stop running, and obtaining the current environment temperature so as to update the preset constant environment temperature value;
and controlling the environment temperature sensor to be in the second working mode.
As an improvement of the above solution, the control strategy corresponding to the evaporator surface temperature being greater than the first temperature threshold and less than the second temperature threshold includes:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time;
and after the fan continues to operate for a fourth preset time, controlling the fan to stop operating, and controlling the ambient temperature sensor to be in the first working mode.
As an improvement of the above solution, the control strategy corresponding to the evaporator surface temperature being equal to or higher than the second temperature threshold includes:
and controlling the compressor and the fan to stop running, and controlling the environment temperature sensor to be in the first working mode.
As an improvement of the above, the controller is further configured to:
when the dehumidifier is in the dehumidification mode, judging whether the current environment humidity is smaller than a target set humidity threshold value;
and when the current environment humidity is smaller than a target set humidity threshold value, controlling the compressor and the fan to stop running, and enabling the dehumidifier to exit the dehumidification mode.
As a refinement of the above solution, the first set humidity threshold is greater than or equal to the target set humidity threshold, and the second set humidity threshold is less than or equal to the target set humidity threshold.
As an improvement of the above scheme, the dehumidifier further comprises a display;
the environment humidity detector is further configured to send the detected current environment humidity to the display, so that the display displays the current environment humidity.
The embodiment of the invention also provides an operation control method of the dehumidifier, wherein an evaporator, a compressor, a fan, an environment humidity detector and an evaporator temperature sensor are arranged in the dehumidifier; the environment humidity detector is used for detecting the current environment humidity in real time; the evaporator temperature sensor is used for detecting the surface temperature of the evaporator;
the operation control method of the dehumidifier comprises the following steps:
after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
when the current environment humidity is greater than the first set humidity threshold value and the operation stopping duration is greater than the second preset duration, controlling the compressor and the fan to start to operate;
after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and judging whether the starting operation duration of the compressor and the fan is longer than a third preset duration or not;
when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
and acquiring a control strategy corresponding to the surface temperature of the evaporator according to the corresponding relation between the preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy.
Compared with the prior art, the dehumidifier and the operation control method of the dehumidifier disclosed by the embodiment of the invention have the advantages that the evaporator, the compressor, the fan, the environment humidity detector and the evaporator temperature sensor are arranged in the dehumidifier. After the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; and if the requirements are met, controlling the compressor and the fan to start and operate. Then, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not; and if the current surface temperature of the evaporator is met, acquiring the current surface temperature of the evaporator, further acquiring a control strategy corresponding to the surface temperature of the evaporator according to a preset corresponding relation between the surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy. After the dehumidifier exits the dehumidification mode, the embodiment of the invention realizes the operation control of the compressor and the fan by acquiring the current environment humidity and the surface temperature of the evaporator. Different temperature intervals at which the surface temperature of the evaporator is judged are adopted, different control strategies are adopted to avoid inaccuracy of the environment humidity of sampling due to the fact that the low temperature of the evaporator affects the environment humidity of the sampling, meanwhile, the stability of the environment humidity of the sampling is guaranteed, the environment humidity value displayed by the dehumidifier is prevented from jumping, the reliable operation of the whole machine is guaranteed, the user experience is effectively improved, and the condition that customers complain or even quit the machine due to inaccurate display of the environment humidity is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a dehumidifier according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a flow of work performed by the controller of the dehumidifier according to an embodiment of the present invention;
FIG. 3 is a flow chart illustrating various control strategies in an embodiment of the present invention;
fig. 4 is a schematic flow chart of an operation control method of a dehumidifier according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a dehumidifier according to an embodiment of the present invention. An embodiment of the present invention provides a dehumidifier 10, including: the dehumidifier comprises a dehumidifier body 11, wherein components such as an evaporator 111, a compressor 112, a fan 113, a condenser and the like are arranged in the dehumidifier body 11 and are used for forming a functional system for dehumidifying the environment. The dehumidifier 10 further comprises an ambient humidity detector 12, an evaporator temperature sensor 13 and a controller 14.
The environment humidity detector 12 is arranged in the dehumidifier body 11 and is used for detecting the current environment humidity in real time. Specifically, the ambient humidity detector 12 is prevented from being located on the back of the dehumidifier, on the side closer to the evaporator. When the dehumidifier is in the dehumidification mode, the compressor and the fan are started to operate, the indoor air passes through the ambient humidity detector 12 and then flows into the evaporator 111, and the evaporator performs cooling treatment.
The evaporator temperature sensor 13 is disposed on the evaporator 111, and is configured to detect a surface temperature of the evaporator.
The controller 14 is connected to the compressor 112, the fan 113, the ambient humidity detector 12, and the evaporator temperature sensor 13, respectively. Fig. 2 is a schematic diagram of a work flow executed by the controller of the dehumidifier in the embodiment of the present invention. The controller 14 is configured to execute steps S11 to S15:
s11, after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not, and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
s12, when the current environment humidity is larger than the first set humidity threshold value and the operation stopping time is longer than the second preset time, controlling the compressor and the fan to start to operate;
s13, after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and judging whether the starting operation time of the compressor and the fan is longer than a third preset time or not;
s14, when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
s15, acquiring a control strategy corresponding to the surface temperature of the evaporator according to the corresponding relation between the preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy.
It should be noted that, before the step S11, the controller 14 is further configured to execute steps S01 to S02:
s01, when the dehumidifier is in the dehumidification mode, judging whether the current environment humidity is smaller than a target set humidity threshold value;
and S02, when the current environment humidity is smaller than a target set humidity threshold value, controlling the compressor and the fan to stop running, and enabling the dehumidifier to exit the dehumidification mode.
Specifically, when the dehumidifier is in the dehumidification mode, the compressor 112 and the fan 113 are in a start-up operation state, and perform dehumidification operation in cooperation with the evaporator and the condenser, so as to reduce the indoor environment humidity. When the ambient humidity detector 12 detects that the current ambient humidity Hc is less than the target set humidity Hc set And if the dehumidifier meets the condition of exiting the dehumidification mode, the dehumidifier exits the dehumidification mode.
Further, in the embodiment of the present invention, when the dehumidifier exits the dehumidification mode, the compressor 112 and the fan 113 stop operating. Since the surface temperature of the evaporator 111 is low immediately after the compressor 112 and the fan 113 stop operating, the ambient humidity detector 12 near the evaporator 111 receives the influence of the low temperature of the evaporator, the detected ambient humidity value is inaccurate, and an unstable phenomenon may occur in a short time.
Therefore, after detecting that the dehumidifier exits the dehumidification mode, the controller 14 controls the operation or stop operation of the compressor 112 and the fan 113 according to the current ambient humidity detected by the ambient humidity detector 12 and the surface temperature of the evaporator detected by the evaporator temperature sensor 13, so that the ambient humidity detector 12 obtains the accurate ambient humidity.
Specifically, after the dehumidifier is detected to exit the dehumidification mode, the current environment humidity Hc detected by the environment humidity detector 12 is obtained in real time, and within a first preset time period, whether the current environment humidity Hc is greater than a first set humidity threshold Hc is determined 1 If so, it indicates that the ambient humidity detector 12 is affected by the evaporator low temperature, and the detected current ambient humidity Hc rises in a short time. The judgment of the compressor 112 and the fan is continued113 has been turned off for a certain period of time, i.e. whether the period of time the compressor and the fan are stopped is greater than a second preset period of time. And if the stop operation time period is longer than the second preset time period, controlling the compressor 112 and the fan 113 to restart the operation. If the running stopping time is not satisfied and is longer than the second preset time, continuing timing and waiting until the running stopping time is satisfied, and controlling the compressor 112 and the fan 113 to restart running.
Preferably, the second preset time period is 3 minutes.
After the compressor 112 and the fan 113 are started to operate, the current ambient humidity Hc detected by the ambient humidity detector 12 is continuously acquired. Judging whether the current environment humidity Hc is smaller than a second set humidity threshold Hc 2 . If so, it is indicated that after the fan is turned on, the indoor air flows into the evaporator, lowering the surface temperature of the evaporator and reducing the ambient moisture, so that the ambient humidity detector 12 is not affected by the low temperature of the evaporator and the current ambient humidity detected tends to be normal, i.e., decreased compared to before. And then, whether the compressor 112 and the fan 113 are already started for a certain time period is continuously judged, that is, whether the starting operation time period of the compressor 112 and the fan 113 is longer than a third preset time period. If the operation stop time period is longer than the third preset time period, the current surface temperature of the evaporator 111 detected by the evaporator temperature sensor 13 is obtained. If the running stopping time length is not met and is longer than the third preset time length, continuing timing and waiting until the running stopping time length is met, and acquiring the current surface temperature of the evaporator 111.
Preferably, the third preset time period is 3 minutes.
In addition, the first set humidity threshold Hc may be set to be lower than the first set humidity threshold Hc 1 Greater than or equal to the target set humidity threshold Hc set And the second set humidity threshold Hc 2 Less than or equal to the target set humidity threshold Hc set 。
Preferably, hc 1 ＝Hc set +1, and Hc 2 ＝Hc set -1。
Further, according to the corresponding relation between the preset surface temperature and the control strategy, the control strategy corresponding to the surface temperature of the evaporator is obtained, and the compressor and the fan are controlled to operate or stop operating according to the control strategy, so that the condition that the sampling of the environment humidity detector 12 is inaccurate due to the low temperature of the evaporator is avoided.
In a preferred embodiment, the ambient humidity detector 12 includes an ambient temperature sensor 121, a humidity-sensitive sensor 122, and a humidity calculator 123.
The environment temperature sensor 121 is configured to detect a current environment temperature Tc in real time when the device is in the first working mode, so as to obtain a current environment temperature value; and when the working mode is in the second working mode, acquiring a preset constant environment temperature value Temp as a current environment temperature value.
Specifically, in a default state, the ambient temperature sensor 121 is in the first operating mode, and can detect the current ambient temperature Tc in real time through its own temperature sensor element, and send the current ambient temperature Tc to the humidity calculator 123 for calculating the current ambient humidity Hc. When the ambient temperature sensor is controlled by the control room of the controller, the controller can enter the second operating mode, obtain a preset constant ambient temperature value Temp to replace the actually detected current ambient temperature Tc, and send the preset constant ambient temperature value Temp to the humidity calculator 123 for calculating the current ambient humidity Hc.
The humidity sensor 122 is used for detecting the current humidity resistance value.
The humidity calculator 123 is configured to calculate the current environment humidity according to the current environment temperature value and the current humidity sensitive resistance value.
Specifically, a corresponding relationship table of the ambient temperature, the humidity sensitive resistance value and the ambient humidity is stored in advance, and the humidity calculator 123 obtains the current ambient temperature Tc and the current humidity sensitive resistance value, and then obtains the current ambient humidity Hc through table lookup.
Preferably, the dehumidifier 10 further includes a display, and the ambient humidity detector is further configured to send the detected current ambient humidity to the display, so that the display displays the current ambient humidity.
As a preferred implementation manner, refer to fig. 3, which is a schematic flow chart of different control strategies in the embodiment of the present invention. The surface temperature of the evaporator is divided into 3 temperature intervals in advance, and each temperature interval is correspondingly provided with different control strategies.
The 3 temperature intervals are respectively as follows: the temperature of the first temperature is less than or equal to the first temperature threshold, is greater than the first temperature threshold and less than the second temperature threshold, and is greater than or equal to the second temperature threshold.
In an alternative embodiment, the first temperature threshold is 10 ℃ and the second temperature threshold is 16 ℃.
Preferably, in an embodiment, the control strategy for the surface temperature of the evaporator being less than or equal to the first temperature threshold includes:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time; after the fan continues to operate for a fourth preset time, judging whether the surface temperature of the evaporator is greater than or equal to a second temperature threshold value or not; wherein the second temperature threshold is greater than the first temperature threshold; and if the surface temperature of the evaporator is greater than or equal to the second temperature threshold, controlling the fan to stop running and controlling the environment temperature sensor to be in the first working mode.
If the surface temperature of the evaporator is lower than the second temperature threshold value, controlling the fan to stop running, and obtaining the current environment temperature so as to update the preset constant environment temperature value; and controlling the ambient temperature sensor to be in the second working mode.
Preferably, the fourth preset time period is 2 minutes.
Specifically, if the surface temperature of the evaporator satisfies T ≤ 10 ℃, it indicates that the dehumidifier is in the dehumidification mode for a long time, the surface temperature of the evaporator is very low, and there is much condensate water, so the compressor 112 is controlled to stop running, but the fan 113 continues to run for 2 minutes, thereby reducing the surface temperature of the evaporator and reducing the ambient water vapor.
And after the fan 113 runs for 2 minutes, judging the surface temperature of the evaporator again, and if T is more than or equal to 16 ℃, indicating that the control effect is achieved, controlling the fan 113 to stop running and quitting the current logic.
At this time, the ambient humidity detector 12 calculates the ambient humidity by using the current ambient temperature Tc actually detected by the ambient temperature sensor 121, and the calculated current ambient humidity Hc is relatively accurate and relatively stable. And displaying the current environment humidity value through the display so as to be convenient for a user to view.
And if the surface temperature of the evaporator meets T < 16 ℃ after the fan 113 runs for 2 minutes, indicating that the control effect is not achieved, taking the currently read environment temperature value Tc as a constant environment temperature value Temp and storing the constant environment temperature value Tc, and then controlling the fan 113 to stop. Thereafter, the ambient temperature Tc detected by the ambient temperature sensor 121 is replaced with Temp. And calculating the current environment humidity value (Hemp) by looking up a table according to the environment temperature (Temp) and the current humidity sensitive resistance value, and displaying the value on a nixie tube of a display.
By adopting the embodiment of the invention, the actually detected ambient temperature Tc is replaced by the constant ambient temperature Temp, so that the influence of the low temperature of the evaporator on the sampling of the ambient temperature can be effectively avoided, the stability of the ambient humidity is further influenced, and the problem of the occurrence of the condition of jumping or stage change of the ambient humidity value on the display panel is solved.
In another embodiment, the control strategy corresponding to the evaporator surface temperature being greater than the first temperature threshold and less than the second temperature threshold includes:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time; and after the fan continues to operate for a fourth preset time, controlling the fan to stop operating, and controlling the ambient temperature sensor to be in the first working mode.
Specifically, if the surface temperature of the evaporator meets the condition that T is more than 10 ℃ and less than 16 ℃, the compressor 112 is intermittently started and stopped, the temperature of the evaporator is slightly different from the normal temperature, so that the compressor is stopped, the fan 113 still continues to operate for 2 minutes, and if the condition of operating for two minutes is met, the fan 113 is controlled to stop. The ambient humidity detector 12 calculates the ambient humidity by using the current ambient temperature Tc actually detected by the ambient temperature sensor 121, reads the current ambient temperature Tc and the humidity sensitive resistance value, calculates the current ambient humidity Hc by looking up a table, and displays the current ambient humidity Hc by using a display.
In another embodiment, the control strategy for the evaporator surface temperature being equal to or greater than the second temperature threshold includes:
and controlling the compressor and the fan to stop running, and controlling the ambient temperature sensor to be in the first working mode.
Specifically, if the surface temperature of the evaporator satisfies T > 16 ℃, which indicates that the compressor is stopped or intermittently started as described above, the evaporator temperature is already close to the normal temperature, and thus, the compressor 112 is controlled to be directly stopped and the fan 113 is stopped. The ambient humidity detector 12 calculates the ambient humidity by using the current ambient temperature Tc actually detected by the ambient temperature sensor 121, reads the current ambient temperature Tc and the humidity sensitive resistance value, calculates the current ambient humidity Hc by looking up a table, and displays the current ambient humidity Hc by using a display.
The embodiment of the invention provides a dehumidifier, which is internally provided with an evaporator, a compressor, a fan, an environment humidity detector and an evaporator temperature sensor. After the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; and if the requirements are met, controlling the compressor and the fan to start and operate. Then, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not; and if the temperature of the surface of the evaporator is met, acquiring the current surface temperature of the evaporator, further acquiring a control strategy corresponding to the surface temperature of the evaporator according to a corresponding relation between a preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy. After the dehumidifier exits the dehumidification mode, the embodiment of the invention realizes the operation control of the compressor and the fan by acquiring the current environment humidity and the surface temperature of the evaporator. Different temperature intervals at which the surface temperature of the evaporator is judged are adopted, different control strategies are adopted to avoid inaccuracy of the environment humidity of sampling due to the fact that the low temperature of the evaporator affects the environment humidity of the sampling, meanwhile, the stability of the environment humidity of the sampling is guaranteed, the environment humidity value displayed by the dehumidifier is prevented from jumping, the reliable operation of the whole machine is guaranteed, the user experience is effectively improved, and the situation that customers complain or even quit the machine due to inaccurate display of the environment humidity is avoided.
Fig. 4 is a schematic flow chart of an operation control method of a dehumidifier according to an embodiment of the present invention. The embodiment of the invention provides an operation control method of a dehumidifier, which is applied to the dehumidifier, wherein an evaporator, a compressor, a fan, an environment humidity detector and an evaporator temperature sensor are arranged in the dehumidifier; the environment humidity detector is used for detecting the current environment humidity in real time; the evaporator temperature sensor is used for detecting the surface temperature of the evaporator.
The operation control method of the dehumidifier comprises the following steps of S21 to S25:
s21, after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not, and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
s22, when the current environment humidity is larger than the first set humidity threshold value and the operation stopping time is longer than the second preset time, controlling the compressor and the fan to start to operate;
s23, after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not;
s24, when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
and S25, acquiring a control strategy corresponding to the surface temperature of the evaporator according to the corresponding relation between the preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy.
In a preferred embodiment, the ambient humidity detector comprises an ambient temperature sensor, a humidity sensitive sensor and a humidity calculator;
the environment temperature sensor is used for detecting the current environment temperature in real time when the device is in a first working mode to obtain a current environment temperature value; when the device is in the second working mode, acquiring a preset constant environment temperature value as a current environment temperature value;
the humidity-sensitive sensor is used for detecting the current humidity-sensitive resistance value;
and the humidity calculator is used for calculating the current environment humidity according to the current environment temperature value and the current humidity sensitive resistance value.
In a preferred embodiment, the control strategy for the evaporator surface temperature being equal to or lower than the first temperature threshold includes:
controlling the compressor to stop running and controlling the fan to continue running for a fourth preset time; after the fan continues to operate for a fourth preset time, judging whether the surface temperature of the evaporator is greater than or equal to a second temperature threshold value or not; wherein the second temperature threshold is greater than the first temperature threshold; and if the surface temperature of the evaporator is greater than or equal to the second temperature threshold, controlling the fan to stop running and controlling the environment temperature sensor to be in the first working mode. If the surface temperature of the evaporator is lower than the second temperature threshold value, controlling the fan to stop running, and obtaining the current environment temperature so as to update the preset constant environment temperature value; and controlling the ambient temperature sensor to be in the second working mode.
In a preferred embodiment, the control strategy corresponding to the surface temperature of the evaporator being greater than the first temperature threshold and less than the second temperature threshold includes:
controlling the compressor to stop running and controlling the fan to continue running for a fourth preset time; and after the fan continues to operate for a fourth preset time, controlling the fan to stop operating, and controlling the ambient temperature sensor to be in the first working mode.
In a preferred embodiment, the control strategy for the evaporator surface temperature being equal to or higher than the second temperature threshold includes:
and controlling the compressor and the fan to stop running, and controlling the ambient temperature sensor to be in the first working mode.
As a preferred embodiment, the controller is further configured to: when the dehumidifier is in the dehumidification mode, judging whether the current environment humidity is smaller than a target set humidity threshold value; and when the current environment humidity is smaller than a target set humidity threshold value, controlling the compressor and the fan to stop running, and enabling the dehumidifier to exit the dehumidification mode.
Wherein the first set humidity threshold is greater than or equal to the target set humidity threshold, and the second set humidity threshold is less than or equal to the target set humidity threshold.
As a preferred embodiment, the dehumidifier further comprises a display;
the environment humidity detector is further configured to send the detected current environment humidity to the display, so that the display displays the current environment humidity.
The embodiment of the invention provides an operation control method of a dehumidifier. The method comprises the following steps: after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; and if the requirements are met, controlling the compressor and the fan to start and operate. Then, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not; and if the temperature of the surface of the evaporator is met, acquiring the current surface temperature of the evaporator, further acquiring a control strategy corresponding to the surface temperature of the evaporator according to a corresponding relation between a preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy. According to the embodiment of the invention, after the dehumidifier exits the dehumidification mode, the operation control of the compressor and the fan is realized by acquiring the current environment humidity and the surface temperature of the evaporator. Different temperature intervals at which the surface temperature of the evaporator is judged are adopted, different control strategies are adopted to avoid inaccuracy of the environment humidity of sampling due to the fact that the low temperature of the evaporator affects the environment humidity of the sampling, meanwhile, the stability of the environment humidity of the sampling is guaranteed, the environment humidity value displayed by the dehumidifier is prevented from jumping, the reliable operation of the whole machine is guaranteed, the user experience is effectively improved, and the situation that customers complain or even quit the machine due to inaccurate display of the environment humidity is avoided.
It should be noted that, the operation control method of the dehumidifier provided in the embodiment of the present invention is the same as all the process steps executed by the controller in the dehumidifier in the above embodiment, and the working principles and beneficial effects of the two are in one-to-one correspondence, so that details are not described herein.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-only memory (ROM), a Random Access Memory (RAM), or the like.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims (7)

1. A dehumidifier, comprising:
the dehumidifier body is internally provided with an evaporator, a compressor and a fan;
the environment humidity detector is arranged in the dehumidifier body and used for detecting the current environment humidity in real time;
the evaporator temperature sensor is arranged on the evaporator and used for detecting the surface temperature of the evaporator;
a controller connected to the compressor, the fan, the ambient humidity detector and the evaporator temperature sensor, respectively, for:
after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
when the current environment humidity is greater than the first set humidity threshold value and the operation stopping duration is greater than the second preset duration, controlling the compressor and the fan to start to operate;
after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not;
when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
acquiring a control strategy corresponding to the surface temperature of the evaporator according to a corresponding relation between a preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy;
the environment humidity detector comprises an environment temperature sensor, a humidity-sensitive sensor and a humidity calculator;
the environment temperature sensor is used for detecting the current environment temperature in real time when the environment temperature sensor is in a first working mode to obtain a current environment temperature value; when the working mode is in a second working mode, acquiring a preset constant environment temperature value as a current environment temperature value;
the humidity sensor is used for detecting the current humidity resistance value;
the humidity calculator is used for calculating the current environment humidity according to the current environment temperature value and the current humidity sensitive resistance value;
the control strategy corresponding to the surface temperature of the evaporator being less than or equal to the first temperature threshold value comprises:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time;
after the fan continues to operate for a fourth preset time, judging whether the surface temperature of the evaporator is greater than or equal to a second temperature threshold value or not; wherein the second temperature threshold is greater than the first temperature threshold;
if the surface temperature of the evaporator is greater than or equal to the second temperature threshold value, controlling the fan to stop running and controlling the ambient temperature sensor to be in the first working mode;
and if the surface temperature of the evaporator is smaller than the second temperature threshold value, controlling the fan to stop running, acquiring the current ambient temperature, updating the preset constant ambient temperature, and controlling the ambient temperature sensor to be in the second working mode.
2. The dehumidifier of claim 1 wherein the control strategy for the evaporator surface temperature greater than the first temperature threshold and less than the second temperature threshold comprises:
controlling the compressor to stop running and controlling the fan to continue running for a fourth preset time;
and after the fan continues to operate for a fourth preset time, controlling the fan to stop operating, and controlling the ambient temperature sensor to be in the first working mode.
3. The dehumidifier of claim 1, wherein the control strategy corresponding to the surface temperature of the evaporator being greater than or equal to the second temperature threshold comprises:
and controlling the compressor and the fan to stop running, and controlling the ambient temperature sensor to be in the first working mode.
4. The dehumidifier of claim 1, wherein the controller is further configured to:
when the dehumidifier is in the dehumidification mode, judging whether the current environment humidity is smaller than a target set humidity threshold value;
and when the current environment humidity is smaller than a target set humidity threshold value, controlling the compressor and the fan to stop running, and enabling the dehumidifier to exit the dehumidification mode.
5. The dehumidifier of claim 4, wherein the first set humidity threshold is greater than or equal to the target set humidity threshold and the second set humidity threshold is less than or equal to the target set humidity threshold.
6. The dehumidifier of any one of claims 1 to 5, wherein the dehumidifier further comprises a display;
the environment humidity detector is further configured to send the detected current environment humidity to the display, so that the display displays the current environment humidity.
7. The operation control method of the dehumidifier is characterized in that an evaporator, a compressor, a fan, an environment humidity detector and an evaporator temperature sensor are arranged in the dehumidifier; the environment humidity detector is used for detecting the current environment humidity in real time; the evaporator temperature sensor is used for detecting the surface temperature of the evaporator;
the operation control method of the dehumidifier comprises the following steps:
after the dehumidifier exits the dehumidification mode, judging whether the current environment humidity is greater than a first set humidity threshold value or not and whether the operation stopping time of the compressor and the fan is greater than a second preset time or not within a first preset time; when the dehumidifier exits the dehumidification mode, the compressor and the fan stop running;
when the current environment humidity is greater than the first set humidity threshold value and the operation stopping duration is greater than the second preset duration, controlling the compressor and the fan to start to operate;
after the compressor and the fan are started to operate, judging whether the current environment humidity is smaller than a second set humidity threshold value or not, and whether the starting operation time of the compressor and the fan is longer than a third preset time or not;
when the current environment humidity is smaller than the second set humidity threshold value and the starting operation time length is longer than the third preset time length, acquiring the current surface temperature of the evaporator;
acquiring a control strategy corresponding to the surface temperature of the evaporator according to a corresponding relation between a preset surface temperature and the control strategy, and controlling the compressor and the fan to operate or stop operating according to the control strategy;
the environment humidity detector comprises an environment temperature sensor, a humidity-sensitive sensor and a humidity calculator;
the environment temperature sensor is used for detecting the current environment temperature in real time when the device is in a first working mode to obtain a current environment temperature value; when the device is in the second working mode, acquiring a preset constant environment temperature value as a current environment temperature value;
the humidity-sensitive sensor is used for detecting the current humidity-sensitive resistance value;
the humidity calculator is used for calculating the current environment humidity according to the current environment temperature value and the current humidity sensitive resistance value;
the control strategy corresponding to the surface temperature of the evaporator being less than or equal to the first temperature threshold value comprises:
controlling the compressor to stop running, and controlling the fan to continue running for a fourth preset time;
after the fan continues to operate for a fourth preset time, judging whether the surface temperature of the evaporator is greater than or equal to a second temperature threshold value or not; wherein the second temperature threshold is greater than the first temperature threshold;
if the surface temperature of the evaporator is greater than or equal to the second temperature threshold value, controlling the fan to stop running and controlling the ambient temperature sensor to be in the first working mode;
and if the surface temperature of the evaporator is smaller than the second temperature threshold value, controlling the fan to stop running, acquiring the current ambient temperature, updating the preset constant ambient temperature value, and controlling the ambient temperature sensor to be in the second working mode.
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