CN108375160B - Control method and device for preventing condensation of air conditioner - Google Patents

Control method and device for preventing condensation of air conditioner Download PDF

Info

Publication number
CN108375160B
CN108375160B CN201711476084.6A CN201711476084A CN108375160B CN 108375160 B CN108375160 B CN 108375160B CN 201711476084 A CN201711476084 A CN 201711476084A CN 108375160 B CN108375160 B CN 108375160B
Authority
CN
China
Prior art keywords
value
humidity
indoor
air conditioner
condensation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201711476084.6A
Other languages
Chinese (zh)
Other versions
CN108375160A (en
Inventor
许文明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Haier Smart Home Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN201711476084.6A priority Critical patent/CN108375160B/en
Publication of CN108375160A publication Critical patent/CN108375160A/en
Application granted granted Critical
Publication of CN108375160B publication Critical patent/CN108375160B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a control method and device for preventing condensation of an air conditioner, and belongs to the technical field of air conditioners. The control method comprises the following steps: acquiring a first outdoor temperature value of a space where an air conditioner is located and a set target temperature value, and determining a temperature difference value between the first outdoor temperature value and the target temperature value; acquiring a first indoor humidity value, a first outdoor humidity value and a first inner coil temperature value of an air conditioner of a space where the air conditioner is located; determining an indoor dew point temperature value according to the first indoor humidity value; and when the temperature difference value is smaller than a preset temperature difference threshold value, the temperature value of the first inner coil is smaller than or equal to an indoor dew point temperature value, the first indoor humidity value is larger than a preset condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, controlling the air conditioner to operate in a fresh air mode. Through switching into the operation of new trend mode, can introduce indoor environment with the lower air of humidity in the outdoor environment, and then reduce the vapor condensation volume of air conditioner when the indoor air is transported in the circulation, guarantee user's use and experience.

Description

Control method and device for preventing condensation of air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method and a control device for preventing condensation of an air conditioner.
Background
Along with the improvement of the living standard of people, air conditioning equipment has also gone into thousands of households, the use of household air conditioners and central air conditioners is more and more common, the requirement of users on the comfort level of the air conditioner is higher and higher, the problems existing in the use process of the air conditioner are also gradually exposed, and one of the problems is the condensation problem of an air conditioner evaporator and an air duct.
The reasons for the condensation of the air conditioner are as follows: (1) the air humidity in the air-conditioning area direction is high; (2) in the range of the air-conditioning area, because the new air exhaust system is unreasonably arranged, overlarge negative pressure is generated, and outdoor air enters the room, so that the humidity and the condensation dew point of the air conditioner are improved; (3) the air conditioner adopts large temperature difference air supply, and air supply quantity and cold quantity of the machine are not allocated, so that cold quantity is too large, and air quantity is too small; (4) the air supply outlet is made of aluminum materials, and due to the good heat conduction performance, the surface temperature of the air outlet materials is too low, and dew is condensed.
Especially, the air conditioner that moves in the high temperature and high humidity environment can appear condensation drop on baffle and panel after the operating duration overlength, also can appear a large amount of condensate on the evaporimeter, will appear blowing and the condition of dripping when the air conditioner is to indoor air supply, has influenced user's use and has experienced, therefore the air conditioner condensation problem is waited for a long time to solve.
Disclosure of Invention
The invention provides a control method and a control device for preventing condensation of an air conditioner, and aims to solve the problem that the condensation is easily generated when the air conditioner operates in a high-temperature and high-humidity environment. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the present invention, there is provided a control method of preventing condensation of an air conditioner, comprising:
acquiring a first outdoor temperature value of a space where an air conditioner is located and a set target temperature value, and determining a temperature difference value between the first outdoor temperature value and the target temperature value;
acquiring a first indoor humidity value, a first outdoor humidity value and a first inner coil temperature value of an air conditioner of a space where the air conditioner is located;
determining an indoor dew point temperature value according to the first indoor humidity value;
and when the temperature difference value is smaller than a preset temperature difference threshold value, the temperature value of the first inner coil is smaller than or equal to an indoor dew point temperature value, the first indoor humidity value is larger than a preset condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, controlling the air conditioner to operate in a fresh air mode.
In an optional embodiment, the control method further comprises:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
comparing the initial indoor humidity value with a preset condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling the first-stage frequency reduction of a compressor of the air conditioner and/or improving the valve degree of a throttling device;
acquiring a first indoor humidity value of a space where an air conditioner is located includes: and acquiring a first indoor humidity value of the space where the air conditioner is located after the first-stage frequency reduction operation of the compressor and/or the valve degree of the throttling device is increased for a first set time.
In an optional embodiment, the control method further comprises:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired;
and when the second indoor humidity value is larger than the condensation humidity threshold value, controlling the compressor of the air conditioner to perform two-stage frequency reduction and/or improving the valve degree of the throttling device.
In an alternative embodiment, when the second indoor humidity value is greater than the condensation humidity threshold, the control method further includes: and controlling the wind speed gear for improving the fresh air mode.
In an optional embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value.
According to a second aspect of the present invention, there is also provided a control apparatus for preventing condensation of an air conditioner, comprising:
the first acquisition unit is used for acquiring a first outdoor humidity value of a space where the air conditioner is located and a set target temperature value;
the first determining unit is used for determining the temperature difference value between the first outdoor temperature value and the target temperature value;
the second acquisition unit is used for acquiring a first indoor humidity value, a first outdoor temperature value and a first inner coil temperature value of the air conditioner of the space where the air conditioner is located;
the second determining unit is used for determining an indoor dew point temperature value according to the first indoor humidity value;
the first main control unit is used for controlling the air conditioner to operate in a fresh air mode when the temperature difference value is smaller than a preset temperature difference threshold value, the temperature value of the first inner coil is smaller than or equal to an indoor dew point temperature value, the first indoor humidity value is larger than a preset condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the frequency reduction of a compressor of the air conditioner and/or the improvement of the valve degree of the throttling device when the initial indoor humidity value is larger than the condensation humidity threshold value;
the second obtaining unit is specifically configured to:
and acquiring a first indoor humidity value of the space where the air conditioner is located after the first-stage frequency reduction operation of the compressor and/or the valve degree of the throttling device is increased for a first set time.
In an alternative embodiment, the control device further comprises:
the fourth acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling the secondary frequency reduction of the compressor of the air conditioner and/or improving the valve degree of the throttling device when the second indoor humidity value is greater than the condensation humidity threshold value.
The third master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an alternative embodiment, the control device further comprises: and the third determining unit is used for determining an initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
The invention adopts the technical scheme and has the beneficial effects that:
according to the control method for preventing condensation of the air conditioner, the outdoor temperature is close to the set target temperature, the temperature value of the inner coil is smaller than or equal to the indoor dew point temperature value, the indoor humidity value is larger than the preset condensation humidity threshold value, and the indoor moisture content is larger than the outdoor moisture content under the condition that the outdoor temperature is close to the set target temperature, the temperature value of the inner coil is smaller than or equal to the indoor dew point temperature value, the indoor humidity value is larger than the preset condensation humidity threshold value, the air with low humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode for operation, so that the air humidity and the water vapor content in the indoor environment are reduced, the water vapor condensation amount of the air conditioner during the cyclic conveying.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a first flow chart of a control method for preventing condensation of an air conditioner according to the invention shown in the embodiment (a);
fig. 2 is a flow chart illustrating a control method for preventing condensation of an air conditioner according to the embodiment (a);
fig. 3 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the second embodiment of the present invention;
fig. 4 is a flow chart illustrating a control method for preventing condensation of the air conditioner according to the second embodiment of the invention;
fig. 5 is a first flow chart of the control method for preventing condensation of the air conditioner according to the third embodiment of the invention;
fig. 6 is a flow chart illustrating a control method for preventing condensation of the air conditioner according to the third embodiment of the invention;
fig. 7 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the present invention in the fourth embodiment (a);
fig. 8 is a second flowchart illustrating a control method for preventing condensation of an air conditioner according to the fourth embodiment of the present invention;
fig. 9 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the present invention in the embodiment (v);
fig. 10 is a second flowchart illustrating the control method for preventing condensation of the air conditioner according to the fifth embodiment of the present invention;
fig. 11 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the present invention in the sixth embodiment;
fig. 12 is a second flowchart illustrating a control method for preventing condensation of an air conditioner according to the sixth embodiment of the present invention;
FIG. 13 is a first flowchart illustrating an apparatus for controlling condensation prevention of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 14 is a second schematic flow chart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 15 is a third schematic flow chart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 16 is a fourth schematic flow chart illustrating the control apparatus for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 17 is a fifth flowchart illustrating an apparatus for controlling condensation prevention of an air conditioner according to an exemplary embodiment of the present invention;
fig. 18 is a sixth schematic flow chart of the control device for preventing condensation of the air conditioner according to the exemplary embodiment of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. As for the methods, products and the like disclosed by the embodiments, the description is simple because the methods correspond to the method parts disclosed by the embodiments, and the related parts can be referred to the method parts for description.
In one or more embodiments of the invention, the technical scheme disclosed by the invention is mainly suitable for anti-condensation control of air-conditioning products with fresh air functions.
The indoor unit is provided with one or more fresh air channels, one end of each fresh air channel is communicated with the outdoor environment, the other end of each fresh air channel is communicated with the air inlet channel of the indoor unit, the fresh air channels are communicated or blocked controllably through devices such as a control valve, when the fresh air channels are in a conducting state, air flows between the outdoor environment and the air inlet channels of the air conditioner through the fresh air channels, and when the fresh air channels are in a blocking state, the air cannot flow between the outdoor environment and the air inlet channels of the air conditioner.
Correspondingly, the air conditioner has a fresh air mode for starting or stopping the fresh air duct, and the fresh air mode can be automatically started or stopped by the air conditioner according to a preset program or controlled according to instructions input by a user through a remote controller or a control panel and the like; when starting the new trend mode, the new trend wind channel switches on, and at this moment, the operation of air conditioning indoor set produces the negative pressure in the indoor set one side in new trend wind channel, and the air of guide outdoor environment one side gets into indoor set inside via the new trend wind channel, later, discharges to the indoor environment in via the air outlet of indoor set, like this, can realize the transport of the air of outdoor environment to the indoor environment.
Example 1
Fig. 1 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to an embodiment (a).
As shown in fig. 1, the invention provides a control method for preventing condensation of an air conditioner, which can be used for adjusting an operation mode of the air conditioner according to environmental parameters of a space where the air conditioner is located, and reducing the condensation amount of the air conditioner in a mode of introducing indoor fresh air through an operation fresh air mode; specifically, the flow steps of the control method mainly include:
s101, acquiring a first indoor humidity value of a space where an air conditioner is located;
in this embodiment, the indoor unit of the air conditioner is configured with a humidity sensor, the humidity sensor may be configured to detect a current humidity parameter of an indoor environment, and the current humidity parameter detected by the humidity sensor may be obtained in step S101 and used as the first indoor humidity value.
Or, an independent humidity sensor or a similar device with a humidity detection function can be configured in the indoor environment of the user, the humidity sensor is used for detecting the current humidity parameter of the indoor environment, and the air conditioner and the humidity sensor carry out data communication through a home local area network, so that the current humidity parameter of the indoor environment can be obtained from the humidity sensor.
S102, acquiring a first outdoor humidity value of a space where an air conditioner is located;
in this embodiment, the outdoor unit of the air conditioner is configured with another humidity sensor, the humidity sensor can be used for detecting a current humidity parameter of the outdoor environment, and the current humidity parameter detected by the humidity sensor disposed in the outdoor unit can be obtained in step S102 and used as the first outdoor humidity value.
Or, the air conditioner of the present invention accesses an external network through a home local area network, and may search outdoor environment data corresponding to the coordinate position of the air conditioner from a server of an air conditioner product service provider or a network platform providing weather data information, where the outdoor environment data includes a current humidity parameter of the outdoor environment, and thus, the current humidity parameter of the outdoor environment obtained by the search in step S102 may be used as the first outdoor humidity value.
S103, judging whether the first indoor humidity value is larger than a preset condensation humidity threshold value or not, and if so, executing a step S104; if not, the process is ended;
one or more condensation humidity threshold values are prestored in the air conditioner, and the condensation humidity threshold values have a mapping relation with the current indoor temperature, and if the current indoor temperature is 20 ℃, the mapped condensation humidity threshold values are relative humidity 80%; when the current indoor temperature is 25 ℃, the mapped condensation humidity threshold value is 75% of the relative humidity, and the like; the mapping relation represents an indoor humidity condition corresponding to non-condensation or less condensation of the air conditioner under the current indoor temperature condition, when the current humidity of the indoor environment does not exceed the condensation humidity threshold value, the air conditioner is free of condensation or less condensation, and when the current humidity of the indoor environment exceeds the condensation humidity threshold value, the air conditioner has a condensation problem; for example, when the current indoor temperature is 20 ℃, the air conditioner has substantially no or little condensation if the current humidity of the indoor environment is 70%, and the air conditioner tends to have a condensation problem if the current humidity of the indoor environment is 85%.
Optionally, the pre-stored humidity value of the air conditioner is not limited to a single humidity value, and may be one or more humidity range values, where each humidity range value corresponds to a temperature value or a temperature range value.
Before the determining step in step S103 is performed, generally, a current temperature value of the indoor environment needs to be detected, and then, a condensation humidity threshold corresponding to the current temperature value is determined according to a pre-stored mapping relationship.
Therefore, whether the indoor unit is prone to condensation under the current indoor humidity condition can be determined by judging the first indoor humidity value and the condensation humidity threshold value.
S104, judging whether the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, and if so, executing a step S105; if not, the process is ended;
the air conditioner of the present invention is pre-stored with one or more outdoor humidity thresholds, generally, the outdoor humidity threshold is smaller than the condensation humidity threshold, and most of the outdoor humidity thresholds represent that the humidity value with low outdoor moisture content is low, such as 50% relative humidity, 60% relative humidity, and so on.
Therefore, when the first outdoor humidity value is less than the outdoor humidity threshold value, it indicates that the moisture content in the air of the current outdoor environment is low.
And S105, controlling the air conditioner to operate in a fresh air mode.
Thus, when the indoor unit is prone to condensation when the water vapor content of the indoor environment is met in the step S103 and the water vapor content of the outdoor environment is low in the step S104, the air conditioner operates in the fresh air mode, outdoor air with low water vapor content and dry water content in the outdoor environment is introduced into the indoor environment and mixed with humid indoor air with high water vapor content in the indoor environment, the water vapor content in the mixed indoor air is reduced in a manner similar to 'neutralization', the humidity value of the indoor environment is reduced to the condensation humidity value or even lower after the air conditioner operates in the fresh air mode, the condensation amount of the indoor unit of the air conditioner is reduced, the 'water blowing' phenomenon is prevented, and the use experience of a user is improved.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of a refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor, and the operating frequency of the compressor is high, so that the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation amount of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not been operated in the fresh air mode in step 105;
in an embodiment, the step S101 may be referred to as a detection method of the initial indoor humidity value, which is not described herein again.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling a compressor of the air conditioner to carry out primary frequency reduction; here, the one-stage down conversion is based on the operating frequency of the compressor in the air-conditioning operation cooling mode, and the operating frequency of the compressor is reduced according to the set first ratio.
If the set first proportion is 80%, the operation frequency of the compressor in the air-conditioning operation refrigeration mode is 1200Hz, and the operation frequency of the compressor after the first stage of frequency reduction is 1200 × 80% — 960 Hz.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the operation frequency of the compressor can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value so as to adjust the condensation amount of the air conditioner. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In the embodiment, the first indoor humidity value of the space where the air conditioner is located after the compressor is operated in the one-stage down mode for the first set time period is obtained in step S101. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S101 to S105 to reduce the humidity of the indoor environment to a humidity condition where the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the step S101 is referred to as a detection mode of the second indoor humidity value, and the second set time period is preferably 10 to 15 minutes;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the secondary operation frequency of the compressor of the air conditioner. Here, the two-stage down-conversion is to reduce the operating frequency of the compressor at a set second rate based on the operating frequency of the compressor after the one-stage down-conversion of the air conditioner.
If the set second proportion is also 80%, the running frequency of the compressor obtained after the primary frequency reduction of the air conditioner is 960Hz, and the running frequency of the compressor after the secondary frequency reduction is 960 x 80% to 768 Hz.
Therefore, the running frequency of the compressor is reduced again in the fresh air mode, the two control modes of introducing dry outdoor fresh air and reducing the frequency of the compressor are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free from condensation or less in condensation.
Preferably, when the indoor humidity value of second is greater than the condensation humidity threshold value, not only can carry out the second grade operation of falling the frequency to the compressor, simultaneously, can also control the wind speed gear that improves new trend mode, initial wind speed gear when air conditioner operation new trend mode is well wind gear in step S105, then when the indoor humidity value of second is greater than condensation humidity threshold value, can improve the new trend mode of air conditioner to high wind gear by well wind gear, in order to improve the speed that the air conditioner carried outdoor air to indoor environment, accelerate the humidity that reduces indoor air.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in step S105 may be determined according to the humidity difference between the first indoor humidity value obtained in step S101 and the first outdoor humidity value obtained in step S102.
Fig. 2 is a flowchart of a second method for controlling condensation prevention of an air conditioner according to the present invention shown in the first embodiment (a).
S201, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s202, acquiring an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s203, judging whether the initial indoor humidity value RH0 is greater than the condensation humidity threshold RHn, if so, executing a step S204, otherwise, returning to execute the step S202;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S202 is greater than the condensation humidity threshold 80%, and step S204 is executed;
s204, first-stage frequency reduction of the compressor;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
s205, judging whether the first set time length is reached, if so, executing the step S206, and if not, repeatedly executing the step S205;
in this embodiment, the first set time period is 10 min;
s206, acquiring a first indoor humidity value RH 1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s207, acquiring a first outdoor humidity value RHP 1;
s208, judging whether the first indoor humidity value RH1 is larger than the condensation humidity threshold RHn, if so, executing a step 209, otherwise, executing a step S215;
s209, judging whether the first outdoor humidity value RHP1 is smaller than a preset outdoor humidity threshold value RHM, if so, executing a step S210, and if not, executing a step S215;
s210, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s211, judging whether the second set time length is reached, if so, executing the step S212, and if not, repeatedly executing the step S211;
in this embodiment, the second set time period is 10 min;
s212, acquiring a second indoor humidity value RH 2;
s213, judging whether the second indoor humidity value RH2 is greater than the condensation humidity threshold value RHn, if so, executing the step 214, otherwise, executing the step S215;
s214, performing secondary frequency reduction on the compressor, adjusting the fresh air mode to a high air gear, and ending the process;
in step S214, the operating frequency obtained after the down-conversion of the previous step S204 is reduced by a second ratio of 80%;
s215, the current operation state is maintained and the process is ended.
According to the control method for preventing condensation of the air conditioner, the air with lower humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode to operate under the condition that the first indoor humidity value is larger than the preset condensation humidity threshold value and the first outdoor humidity value is smaller than the preset outdoor humidity threshold value according to the indoor and outdoor humidity conditions of the space where the air conditioner is located, so that the air humidity and the water vapor content in the indoor environment are reduced, the water vapor condensation amount of the air conditioner during the circulation conveying of the indoor air is further reduced, and the use experience of a user is guaranteed.
Example 2
Fig. 3 is a schematic flow chart diagram of a control method for preventing condensation of an air conditioner according to the second embodiment of the invention.
As shown in fig. 3, the invention also provides a control method for preventing condensation of an air conditioner, which can be used for adjusting the operation mode of the air conditioner according to the environmental parameters of the space where the air conditioner is located, and reducing the condensation amount of the air conditioner in a mode of introducing indoor fresh air through the fresh air operation mode; specifically, the flow steps of the control method mainly include:
s301, acquiring a first indoor humidity value of a space where an air conditioner is located, and determining a first indoor moisture content;
in this embodiment, the indoor unit of the air conditioner is configured with a humidity sensor, the humidity sensor may be configured to detect a current humidity parameter of an indoor environment, and the current humidity parameter detected by the humidity sensor may be obtained in step S301 and used as the first indoor humidity value.
Or, an independent humidity sensor or a similar device with a humidity detection function can be configured in the indoor environment of the user, the humidity sensor is used for detecting the current humidity parameter of the indoor environment, and the air conditioner and the humidity sensor carry out data communication through a home local area network, so that the current humidity parameter of the indoor environment can be obtained from the humidity sensor.
In step S301, the first indoor moisture content may be calculated by an algorithm known to those skilled in the art, and will not be described herein.
S302, acquiring a first outdoor humidity value of a space where an air conditioner is located, and determining a first outdoor moisture content;
in this embodiment, the outdoor unit of the air conditioner is configured with another humidity sensor, the humidity sensor can be used to detect a current humidity parameter of the outdoor environment, and the current humidity parameter detected by the humidity sensor disposed in the outdoor unit can be obtained in step S302 and used as the first outdoor humidity value.
Or, the air conditioner of the present invention accesses the external network through the home lan, and may search the outdoor environment data corresponding to the coordinate position of the air conditioner from a server of an air conditioner product service provider or a network platform providing weather data information, where the outdoor environment data includes the current humidity parameter of the outdoor environment, and thus, the current humidity parameter of the outdoor environment obtained by the search in step S302 may be used as the first outdoor humidity value.
S303, judging whether the first indoor humidity value is larger than a preset condensation humidity threshold value, if so, executing the step S304, and if not, ending the process;
in the embodiment, the determination process of step S303 is the same as or similar to step S103 of the first embodiment, and is not repeated herein.
S304, judging whether the first indoor moisture content is larger than the first outdoor moisture content, if so, executing the step S305, and if not, ending the process;
and S305, controlling the air conditioner to operate in a fresh air mode.
Thus, when the indoor unit is prone to condensation when the water vapor content of the indoor environment is met in the step S303 and the water vapor content of the outdoor environment is low in the step S304, the air conditioner operates in the fresh air mode, outdoor air with low water vapor content and dry water content in the outdoor environment is introduced into the indoor environment and mixed with humid indoor air with high water vapor content in the indoor environment, the water vapor content in the mixed indoor air is reduced in a manner similar to 'neutralization', the humidity value of the indoor environment is reduced to the condensation humidity value or even lower after the air conditioner operates in the fresh air mode, the condensation amount of the indoor unit of the air conditioner is reduced, the 'water blowing' phenomenon is prevented, and the use experience of a user is improved.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of a refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor, and the operating frequency of the compressor is high, so that the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation amount of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not operated the fresh air mode in step 305;
in an embodiment, the step S301 may be referred to as a detection mode of the initial indoor humidity value, which is not described herein again.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling a compressor of the air conditioner to carry out primary frequency reduction; here, the one-stage down conversion is based on the operating frequency of the compressor in the air-conditioning operation cooling mode, and the operating frequency of the compressor is reduced according to the set first ratio.
If the set first proportion is 80%, the operation frequency of the compressor in the air-conditioning operation refrigeration mode is 1200Hz, and the operation frequency of the compressor after the first stage of frequency reduction is 1200 × 80% — 960 Hz.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the operation frequency of the compressor can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value so as to adjust the condensation amount of the air conditioner. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In the embodiment, the first indoor humidity value of the space where the air conditioner is located after the compressor is operated in the one-stage down mode for the first set time period is obtained in step S301. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S301 to S305 to reduce the humidity of the indoor environment to a humidity condition where the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the step S301 is referred to for detecting the second indoor humidity value, and the second set time period is preferably 10 to 15 minutes;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the secondary operation frequency of the compressor of the air conditioner. Here, the two-stage down-conversion is to reduce the operating frequency of the compressor at a set second rate based on the operating frequency of the compressor after the one-stage down-conversion of the air conditioner.
If the set second proportion is also 80%, the running frequency of the compressor obtained after the primary frequency reduction of the air conditioner is 960Hz, and the running frequency of the compressor after the secondary frequency reduction is 960 x 80% to 768 Hz.
Therefore, the running frequency of the compressor is reduced again in the fresh air mode, the two control modes of introducing dry outdoor fresh air and reducing the frequency of the compressor are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free from condensation or less in condensation.
Preferably, when the second indoor humidity value is greater than the condensation humidity threshold value, not only can the compressor be subjected to the second-stage frequency reduction operation, and simultaneously, the wind speed gear of the new wind mode can be controlled to be improved, if the initial wind speed gear of the air conditioner in the step S305 during the operation of the new wind mode is the medium wind gear, when the second indoor humidity value is greater than the condensation humidity threshold value, the new wind mode of the air conditioner can be improved to the high wind gear from the medium wind gear, so that the speed of conveying outdoor air to the indoor environment by the air conditioner is improved, and the humidity of the indoor air is reduced.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in step S305 may be determined according to the humidity difference between the first indoor humidity value obtained in step S301 and the first outdoor humidity value obtained in step S302.
Fig. 4 is a second flowchart of the air conditioner condensation prevention control method according to the second embodiment of the present invention.
S401, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s402, acquiring an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s403, judging whether the initial indoor humidity value RH0 is larger than the condensation humidity threshold RHn, if so, executing a step S404, otherwise, returning to execute the step S402;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S402 is greater than the condensation humidity threshold 80%, and step S204 is executed;
s404, first-stage frequency reduction of the compressor;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
s405, judging whether the first set time length is reached, if so, executing the step S206, and if not, repeatedly executing the step S205;
in this embodiment, the first set time period is 10 min;
s406, acquiring a first indoor humidity value RH 1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s407, calculating a first indoor moisture content D1;
s408, acquiring a first outdoor humidity value RHP 1;
s409, calculating a first outdoor moisture content Dp 1;
s410, judging whether the first indoor humidity value RH1 is larger than the condensation humidity threshold RHn, if so, executing a step 411, otherwise, executing a step S417;
s411, judging whether the first indoor moisture content D1 is larger than the first outdoor moisture content Dp1, if so, executing the step S412, and if not, executing the step S417;
s412, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s413, judging whether the second set time length is reached, if so, executing the step S414, and if not, repeatedly executing the step S413;
in this embodiment, the second set time period is 10 min;
s414, acquiring a second indoor humidity value RH 2;
s415, judging whether the second indoor humidity value RH2 is larger than the condensation humidity threshold RHn, if so, executing a step 416, and if not, executing a step S417;
s416, performing secondary frequency reduction on the compressor, adjusting the fresh air mode to a high air gear, and ending the process;
in step S416, the operating frequency obtained after the first stage down-conversion in step S404 is reduced by a second ratio of 80%;
and S417, maintaining the current running state unchanged, and ending the process.
According to the control method for preventing condensation of the air conditioner, the indoor humidity value is larger than the preset condensation humidity threshold value and the indoor moisture content is larger than the outdoor moisture content under the condition that the indoor humidity value is larger than the preset condensation humidity threshold value and the indoor moisture content is larger than the outdoor moisture content, the air with lower humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode to operate, so that the air humidity and the water vapor content in the indoor environment are reduced, the water vapor condensation amount of the air conditioner during the circulation conveying of the indoor air is further reduced, and the use experience of a user is guaranteed.
Example 3
Fig. 5 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the third embodiment of the present invention.
As shown in fig. 5, the invention also provides a control method for preventing condensation of an air conditioner, which can be used for adjusting the operation mode of the air conditioner according to the environmental parameters of the space where the air conditioner is located, and reducing the condensation amount of the air conditioner in a mode of introducing indoor fresh air through the fresh air operation mode; specifically, the flow steps of the control method mainly include:
s501, acquiring a first indoor humidity value of a space where an air conditioner is located;
in this embodiment, the indoor unit of the air conditioner is configured with a humidity sensor, the humidity sensor may be configured to detect a current humidity parameter of an indoor environment, and the current humidity parameter detected by the humidity sensor may be obtained in step S501 and used as the first indoor humidity value.
Or, an independent humidity sensor or a similar device with a humidity detection function can be configured in the indoor environment of the user, the humidity sensor is used for detecting the current humidity parameter of the indoor environment, and the air conditioner and the humidity sensor carry out data communication through a home local area network, so that the current humidity parameter of the indoor environment can be obtained from the humidity sensor.
S502, acquiring a first outdoor humidity value of a space where an air conditioner is located;
in this embodiment, the outdoor unit of the air conditioner is configured with another humidity sensor, the humidity sensor can be used for detecting a current humidity parameter of the outdoor environment, and the current humidity parameter detected by the humidity sensor disposed in the outdoor unit can be obtained in step S502 and used as the first outdoor humidity value.
Or, the air conditioner of the present invention accesses an external network through a home local area network, and may search outdoor environment data corresponding to the coordinate position of the air conditioner from a server of an air conditioner product service provider or a network platform providing weather data information, where the outdoor environment data includes a current humidity parameter of the outdoor environment, and thus, the current humidity parameter of the outdoor environment obtained by the search in step S502 may be used as the first outdoor humidity value.
S503, obtaining a temperature value of a first inner coil of the air conditioner;
in this embodiment, a temperature sensor is disposed at a position of the inner coil of the indoor unit of the air conditioner, and the temperature sensor can be configured to detect a current temperature parameter of the inner coil, and the current temperature parameter detected by the temperature sensor disposed in the indoor unit can be obtained in step S503 and is used as the first inner coil temperature value.
S504, determining an indoor dew point temperature value according to the first indoor humidity value;
in this embodiment, the indoor dew point temperature value can be calculated according to the following formula:
Te＝-24.5+A*T1+28.6*RH1；
here, Te is an indoor dew point temperature value, -24.5 is a calculation constant, a and 28.6 are calculation coefficients, T1 is a current indoor temperature value (detectable by a temperature sensor), and RH1 is a first indoor humidity value;
s505, judging whether the temperature value of the first inner coil is smaller than or equal to the indoor dew point temperature value, if so, executing a step S506, and if not, ending the process;
in this embodiment, the current surface temperature condition of indoor heat exchanger can be reflected to the interior coil pipe temperature of indoor set, and when interior coil pipe temperature was not more than indoor dew point temperature value, then the condensation problem appeared easily, and when interior coil pipe temperature was greater than indoor dew point temperature value, then the difficult condensation problem that appears.
S506, judging whether the first indoor humidity value is larger than a preset condensation humidity threshold value, if so, executing the step S305, and if not, ending the process;
in the embodiment, the determination process of step S506 is the same as or similar to step S103 of the first embodiment, and is not repeated herein.
S507, judging whether the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, if so, executing the step S508, and if not, ending the process;
in the embodiment, the determination process of step S507 is the same as or similar to step S104 of embodiment (i), and is not described herein again.
And S508, controlling the air conditioner to operate in a fresh air mode.
Thus, when the moisture content of the indoor environment is satisfied in the steps S505 and S506, which easily causes condensation of the indoor unit, and the moisture content of the outdoor environment is low in the step S507, the air conditioner of the present invention operates the aforementioned fresh air mode, introduces the outdoor air with low moisture content and relatively dry in the outdoor environment into the indoor environment, and mixes the outdoor air with high moisture content and relatively humid indoor air in the indoor environment, and reduces the moisture content in the mixed indoor air in a manner similar to "neutralization", so that the humidity value of the indoor environment after the fresh air mode is operated by the air conditioner is reduced to the condensation humidity value or even lower, thereby reducing the condensation amount of the indoor unit of the air conditioner, preventing the "water blowing" phenomenon, and improving the use experience of the user.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of the refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor and the opening degree of the throttling device, the operating frequency of the compressor is high, the opening degree of the throttling device is small, the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the opening degree of the throttling device is large, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation quantity of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not been operated in the fresh air mode of step 508;
in an embodiment, the step S501 may be referred to as a detection method of the initial indoor humidity value, which is not described herein again.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling a compressor of the air conditioner to carry out primary frequency reduction; here, the one-stage down conversion is based on the operating frequency of the compressor in the air-conditioning operation cooling mode, and the operating frequency of the compressor is reduced according to the set first ratio.
If the set first proportion is 80%, the operation frequency of the compressor in the air-conditioning operation refrigeration mode is 1200Hz, and the operation frequency of the compressor after the first stage of frequency reduction is 1200 × 80% — 960 Hz.
And/or, controlling and improving the valve degree of the throttling device; here, the increased degree of openness is based on an initial degree of openness of the throttle device in the cooling mode of air-conditioning operation.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the operation frequency of the compressor and/or the valve degree of the throttling device can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value, so that the condensation amount of the air conditioner can be adjusted. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In an embodiment, step S501 obtains a first indoor humidity value of the space where the air conditioner is located after the compressor is down-converted in one stage and/or the throttle valve is increased for a first set period of time. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S501 to S508 to reduce the humidity of the indoor environment to a humidity condition where the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the step S301 is referred to for detecting the second indoor humidity value, and the second set time period is preferably 10 to 15 minutes;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the secondary operation frequency of the compressor of the air conditioner. Here, the two-stage down-conversion is to reduce the operating frequency of the compressor at a set second rate based on the operating frequency of the compressor after the one-stage down-conversion of the air conditioner.
If the set second proportion is also 80%, the running frequency of the compressor obtained after the primary frequency reduction of the air conditioner is 960Hz, and the running frequency of the compressor after the secondary frequency reduction is 960 x 80% to 768 Hz.
And/or, increasing the throttle valve of the throttle device again; here, the increased degree of openness is based on a secondary degree of openness adjustment of the air conditioner on the basis of the degree of openness of the aforementioned first increased throttle device.
Therefore, the running frequency of the compressor is reduced and/or the valve opening of the throttling device is improved again in the fresh air mode, the introduced dry outdoor fresh air and the compressor frequency reduction (and/or the valve opening is improved) are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free from condensation or less in condensation.
Preferably, when the indoor humidity value of second is greater than the condensation humidity threshold value, not only can carry out the second grade operation of falling frequency, valve opening adjusts to the compressor, and simultaneously, can also control the wind speed gear that improves the new trend mode, initial wind speed gear when the air conditioner moves the new trend mode in step S508 is well wind gear, then when the indoor humidity value of second is greater than condensation humidity threshold value, can improve the new trend mode of air conditioner to well wind gear by well wind gear, in order to improve the speed that the air conditioner carried outdoor air to indoor environment, accelerate the humidity that reduces the indoor air.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in step S508 may be determined according to the humidity difference between the first indoor humidity value obtained in step S501 and the first outdoor humidity value obtained in step S502.
Fig. 6 is a flowchart of the air conditioner condensation prevention control method according to the second embodiment of the present invention.
S601, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s602, acquiring an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s603, judging whether the initial indoor humidity value RH0 is greater than the condensation humidity threshold RHn, if so, executing a step S604, otherwise, returning to execute the step S602;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S602 is greater than the condensation humidity threshold 80%, and step S604 is executed;
s604, first-stage frequency reduction of the compressor and/or increasing the degree of valve of the throttling device;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
the valve degree of the throttling device is increased by 50 steps;
s605, judging whether the first set time length is reached, if so, executing the step S606, otherwise, repeatedly executing the step S605;
in this embodiment, the first set time period is 10 min;
s606, acquiring a first indoor humidity value RH 1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s607, acquiring a first outdoor humidity value RHP 1;
s608, acquiring a first inner coil temperature Tp 1;
s609, calculating an indoor dew point temperature value Te;
in an embodiment, the indoor dew point temperature value may be calculated according to the following formula:
Te＝-24.5+A*T1+28.6*RH1；
here, Te is an indoor dew point temperature value, -24.5 is a calculation constant, a and 28.6 are calculation coefficients, and T1 is a current indoor temperature value (which can be detected by a temperature sensor);
s610, judging whether the first inner coil temperature Tp1 is less than or equal to the indoor dew point temperature Te, if so, executing a step 611, and if not, executing a step 618;
s611, judging whether the first indoor humidity value RH1 is larger than a preset condensation humidity threshold value RHn, if so, executing a step S612, otherwise, executing a step S618;
s612, judging whether the first outdoor humidity value RHP1 is smaller than a preset outdoor humidity threshold value RHM, if so, executing a step S613, otherwise, executing a step S618;
s613, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s614, judging whether the second set time length is reached, if so, executing the step S615, otherwise, repeatedly executing the step S614;
in this embodiment, the second set time period is 10 min;
s615, acquiring a second indoor humidity value RH 2;
s616, judging whether the second indoor humidity value RH2 is greater than the condensation humidity threshold RHn, if so, executing a step 617, and if not, executing a step S618;
s617, performing secondary frequency reduction on the compressor, improving the degree of valve of the throttling device, adjusting the fresh air mode to a high air gear, and ending the process;
in step S617, the operating frequency obtained after the first stage down-conversion in step S604 is reduced by a second ratio of 80%;
the valve degree is increased by 50 steps again;
and S618, keeping the current running state unchanged, and ending the process.
According to the control method for preventing condensation of the air conditioner, the air with lower humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode to operate under the conditions that the temperature value of the inner coil is less than or equal to the indoor dew point temperature value, the indoor humidity value is greater than the preset condensation humidity threshold value and the indoor moisture content is greater than the outdoor moisture content according to the indoor and outdoor humidity conditions of the space where the air conditioner is located, so that the air humidity and the moisture content in the indoor environment are reduced, the moisture condensation amount of the air conditioner during the cyclic conveying of the indoor air is further reduced, and the use experience of a user is guaranteed.
Example (IV)
Fig. 7 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the fourth embodiment of the present invention.
As shown in fig. 7, the invention further provides a control method for preventing condensation of an air conditioner, which can also be used for adjusting the operation mode of the air conditioner according to the environmental parameters of the space where the air conditioner is located, and reducing the condensation amount of the air conditioner in a mode of introducing indoor fresh air through the fresh air operation mode; specifically, the flow steps of the control method mainly include:
s701, acquiring a first indoor temperature value of a space where an air conditioner is located and a set target temperature value;
in this embodiment, the indoor unit of the air conditioner is configured with a temperature sensor, the temperature sensor may be configured to detect a current temperature parameter of an indoor environment, and the current temperature parameter detected by the temperature sensor may be obtained in step S701 and used as the first indoor temperature value.
Or, an independent temperature sensor or a similar device with a temperature detection function can be configured in the indoor environment of the user, the temperature sensor is used for detecting the current temperature parameter of the indoor environment, and the air conditioner and the temperature sensor carry out data communication through a home local area network, so that the current temperature parameter of the indoor environment can be obtained from the temperature sensor.
In the present embodiment, the target temperature is an indoor temperature that can be reached by a desired air conditioning operation set by a user through a device such as a remote controller or a control panel, for example, a cooling temperature 25 ℃, 28 ℃, or the like output by the user in the cooling mode.
S702, calculating a temperature difference value between the first indoor temperature value and the target temperature value;
s703, acquiring a first indoor humidity value, a first outdoor humidity value and a first inner coil temperature value of the air conditioner in the space where the air conditioner is located;
in this embodiment, the first indoor humidity value, the first outdoor humidity value, and the first inner coil temperature value may refer to the relevant process steps in the third embodiment, which are not described herein again.
S704, determining an indoor dew point temperature value according to the first indoor humidity value;
in this embodiment, the determination method of the indoor dew point temperature value may refer to S505, which is not described herein.
S705, judging whether the temperature difference value is larger than a preset temperature difference threshold value or not, if so, executing a step S706, and if not, ending the process;
according to the invention, the temperature difference value between the indoor temperature and the set target temperature is compared with the preset temperature difference threshold value, so that the adverse effect of a frequency reduction adjusting mode on the indoor refrigeration effect when the temperature difference value is too large is prevented, and the somatosensory comfort level of a user in a refrigeration mode is ensured.
S706, judging whether the temperature value of the first inner coil is smaller than or equal to the indoor dew point temperature value, if so, executing a step S707, and if not, ending the process;
in this embodiment, the current surface temperature condition of indoor heat exchanger can be reflected to the interior coil pipe temperature of indoor set, and when interior coil pipe temperature was not more than indoor dew point temperature value, then the condensation problem appeared easily, and when interior coil pipe temperature was greater than indoor dew point temperature value, then the difficult condensation problem that appears.
S707, judging whether the first indoor humidity value is larger than a preset condensation humidity threshold value, if so, executing the step S708, and if not, ending the process;
in the embodiment, the determination process in step S707 is the same as or similar to that in step S103 in embodiment (a), and is not described herein again.
S708, judging whether the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, if so, executing the step S709, and ending the process;
in the embodiment, the determination process of step S708 is the same as or similar to step S104 of embodiment (i), and is not repeated herein.
And S709, controlling the air conditioner to operate in a fresh air mode.
Thus, when the moisture content of the indoor environment is satisfied in steps S706 and S707, which easily causes condensation of the indoor unit, and the moisture content of the outdoor environment is low in step S708, the air conditioner of the present invention operates the aforementioned fresh air mode, introduces the outdoor air with low moisture content and relatively dry moisture content in the outdoor environment into the indoor environment, and mixes the outdoor air with relatively high moisture content and relatively humid indoor air in the indoor environment, and reduces the moisture content in the mixed indoor air in a manner similar to "neutralization", so that the humidity value of the indoor environment after the fresh air mode is operated by the air conditioner is reduced to the condensation humidity value or even lower, thereby reducing the condensation amount of the indoor unit of the air conditioner, preventing the "water blowing" phenomenon, and improving the use experience of the user.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of the refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor and the opening degree of the throttling device, the operating frequency of the compressor is high, the opening degree of the throttling device is small, the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the opening degree of the throttling device is large, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation quantity of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not operated the fresh air mode in step 709;
in an embodiment, the step S703 may be referred to as a detection method of the initial indoor humidity value, which is not described herein again.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling and improving the valve degree of the throttling device; here, the increased degree of openness is based on an initial degree of openness of the throttle device in the cooling mode of air-conditioning operation.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the valve degree of the throttling device can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value, so that the condensation amount of the air conditioner can be adjusted. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In the embodiment, the first indoor humidity value of the space where the air conditioner is located after the throttle valve is increased by the first set time period is acquired in step S703. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S701 to S709 to reduce the humidity of the indoor environment to the humidity condition where the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the step S301 is referred to for detecting the second indoor humidity value, and the second set time period is preferably 10 to 15 minutes;
when the humidity value in the second chamber is larger than the condensation humidity threshold value, controlling and improving the valve degree of the throttling device; here, the increased degree of openness is based on a secondary degree of openness adjustment of the air conditioner on the basis of the degree of openness of the aforementioned first increased throttle device.
Therefore, the valve opening of the throttling device is increased again in the fresh air mode, the introduced dry outdoor fresh air and the valve opening are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free of condensation or less in condensation.
The preferred, when the indoor humidity value of second is greater than condensation humidity threshold value, not only can the valve opening be adjusted, simultaneously, can also control the wind speed gear that improves the new trend mode, initial wind speed gear when the air conditioner moves the new trend mode in step S709 is well wind gear, then when the indoor humidity value of second is greater than condensation humidity threshold value, can improve the new trend mode of air conditioner to well wind gear by well wind gear, in order to improve the speed that the air conditioner carried outdoor air to indoor environment, accelerate the humidity that reduces the room air.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in the step S709 can be determined according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value obtained in the step S703.
Fig. 8 is a second flowchart of the air conditioner condensation prevention control method according to the present invention shown in the embodiment (four).
S801, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s802, obtaining an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s803, judging whether the initial indoor humidity value RH0 is greater than the condensation humidity threshold RHn, if so, executing step S804, otherwise, returning to execute step S802;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S802 is greater than the condensation humidity threshold 80%, and step S804 is executed;
s804, first-stage frequency reduction of the compressor and/or increasing the valve degree of the throttling device;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
the valve degree of the throttling device is increased by 50 steps;
s805, judging whether the first set time length is reached, if so, executing the step S806, and if not, repeatedly executing the step S805;
in this embodiment, the first set time period is 10 min;
s806, obtaining a first indoor temperature value T1 of a space where the air conditioner is located and a set target temperature value Tn;
s807, calculating a temperature difference value delta T1 between the first indoor temperature value T1 and a target temperature value Tn;
s808, judging whether the temperature difference value delta T1 is larger than a preset temperature difference threshold value delta Tn, if so, executing a step S809, and if not, executing a step S822;
in this embodiment, the temperature difference threshold Δ Tn is 2 ℃, and when Δ T1 is greater than 2 ℃, the frequency of the air conditioner compressor should not be reduced in frequency in the subsequent adjusting process, so as to ensure the cooling capacity of the air conditioner.
S809, acquiring a first indoor humidity value RH 1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s810, acquiring a first outdoor humidity value RHP 1;
s811, acquiring a first inner coil temperature Tp 1;
s812, calculating an indoor dew point temperature value Te;
in an embodiment, the indoor dew point temperature value may be calculated according to the following formula:
Te＝-24.5+A*T1+28.6*RH1；
here, Te is an indoor dew point temperature value, -24.5 is a calculation constant, a and 28.6 are calculation coefficients, and T1 is a current indoor temperature value (which can be detected by a temperature sensor);
s813, judging whether the first inner coil temperature Tp1 is less than or equal to the indoor dew point temperature Te, if so, executing step 814, and if not, executing step S821;
s814, judging whether the first indoor humidity value RH1 is larger than a preset condensation humidity threshold value RHn, if so, executing a step S815, otherwise, executing a step S821;
s815, judging whether the first outdoor humidity value RHP1 is smaller than a preset outdoor humidity threshold value RHM, if so, executing a step S816, otherwise, executing a step S821;
s816, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s817, judging whether the second set time length is reached, if so, executing the step S818, otherwise, repeatedly executing the step S817;
in this embodiment, the second set time period is 10 min;
s818, acquiring a second indoor humidity value RH 2;
s819, judging whether the second indoor humidity value RH2 is larger than the condensation humidity threshold RHn, if so, executing step 820, and if not, executing step 821;
s820, improving the valve degree of the throttling device, adjusting the fresh air mode to a high air gear, and ending the process;
in step S820, the degree of valve is increased by 50 steps again;
and S821, maintaining the current operation state unchanged, and ending the process.
According to the control method for preventing condensation of the air conditioner, the air with lower humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode to operate under the conditions that the temperature value of the inner coil is less than or equal to the indoor dew point temperature value, the indoor humidity value is greater than the preset condensation humidity threshold value and the indoor moisture content is greater than the outdoor moisture content according to the indoor and outdoor humidity conditions of the space where the air conditioner is located, so that the air humidity and the moisture content in the indoor environment are reduced, the moisture condensation amount of the air conditioner during the cyclic conveying of the indoor air is further reduced, and the use experience of a user is guaranteed.
Example (five)
Fig. 9 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the fifth embodiment of the present invention.
As shown in fig. 9, the present invention further provides a control method for preventing condensation of an air conditioner, which can also be used for adjusting an operation mode of the air conditioner according to an environmental parameter of a space where the air conditioner is located, and reducing the condensation amount of the air conditioner by introducing indoor fresh air through an operation fresh air mode; specifically, the flow steps of the control method mainly include:
s901, acquiring a first outdoor temperature value of a space where an air conditioner is located and a set target temperature value;
in this embodiment, the outdoor unit of the air conditioner is configured with another temperature sensor, the temperature sensor can be used to detect a current temperature parameter of the outdoor environment, and the current temperature parameter detected by the temperature sensor disposed in the outdoor unit can be obtained in step S901 and is used as the first outdoor temperature value.
Or, the air conditioner of the present invention accesses an external network through a home local area network, and may search outdoor environment data corresponding to the coordinate position of the air conditioner from a server of an air conditioner product service provider or a network platform providing weather data information, where the outdoor environment data includes a current temperature parameter of the outdoor environment, and thus, in step S901, the current temperature parameter of the outdoor environment obtained through the search may be used as the first outdoor temperature value.
In the present embodiment, the target temperature is an indoor temperature that can be reached by a desired air conditioning operation set by a user through a device such as a remote controller or a control panel, for example, a cooling temperature 25 ℃, 28 ℃, or the like output by the user in the cooling mode.
S902, calculating a temperature difference value between the first outdoor temperature value and the target temperature value;
s903, acquiring a first indoor humidity value, a first outdoor humidity value and a first inner coil temperature value of the air conditioner in the space where the air conditioner is located;
in this embodiment, the first indoor humidity value, the first outdoor humidity value, and the first inner coil temperature value may refer to the relevant process steps in the third embodiment, which are not described herein again.
S904, determining an indoor dew point temperature value according to the first indoor humidity value;
in this embodiment, the determination method of the indoor dew point temperature value may refer to S505, which is not described herein.
S905, judging whether the temperature difference value is smaller than a preset temperature difference threshold value, if so, executing a step S906, and if not, ending the process;
the invention compares the temperature difference value between the indoor temperature and the set target temperature with the preset temperature difference threshold value, and when the temperature difference value is smaller than the temperature difference threshold value, the outdoor temperature is similar to the target temperature, and the outdoor fresh air is introduced to accelerate the temperature of the indoor environment to reach the target temperature, thereby effectively reducing the operation power consumption of the air conditioner.
S906, judging whether the temperature value of the first inner coil is less than or equal to the indoor dew point temperature value, if so, executing the step S907, and if not, ending the process;
in this embodiment, the current surface temperature condition of indoor heat exchanger can be reflected to the interior coil pipe temperature of indoor set, and when interior coil pipe temperature was not more than indoor dew point temperature value, then the condensation problem appeared easily, and when interior coil pipe temperature was greater than indoor dew point temperature value, then the difficult condensation problem that appears.
S907, judging whether the first indoor humidity value is larger than a preset condensation humidity threshold value, if so, executing the step S908, and if not, ending the process;
in the embodiment, the determination process of step S907 is the same as or similar to step S103 of the first embodiment, and is not repeated herein.
S908, judging whether the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, if so, executing the step S909, and ending the process;
in the embodiment, the determination process of step S908 is the same as or similar to step S104 of embodiment (i), and is not repeated herein.
And S909, controlling the air conditioner to operate in a fresh air mode.
Thus, when the moisture content of the indoor environment is satisfied in the steps S906 and S907, which easily causes condensation of the indoor unit, and the moisture content of the outdoor environment is low in the step S908, the air conditioner of the present invention operates the aforementioned fresh air mode, introduces the outdoor air with low moisture content and relatively dry in the outdoor environment into the indoor environment, mixes the outdoor air with high moisture content and relatively humid indoor air in the indoor environment, and reduces the moisture content in the mixed indoor air in a manner similar to "neutralization", so that the humidity value of the indoor environment after the fresh air mode is operated by the air conditioner is reduced to the condensation humidity value or even lower, thereby reducing the condensation amount of the indoor unit of the air conditioner, preventing the "water blowing" phenomenon, and improving the use experience of users.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of the refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor and the opening degree of the throttling device, the operating frequency of the compressor is high, the opening degree of the throttling device is small, the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the opening degree of the throttling device is large, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation quantity of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not been operated in the fresh air mode of step 508;
in an embodiment, the method for detecting the initial indoor humidity value may refer to step S903, which is not described herein.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling a compressor of the air conditioner to carry out primary frequency reduction; here, the one-stage down conversion is based on the operating frequency of the compressor in the air-conditioning operation cooling mode, and the operating frequency of the compressor is reduced according to the set first ratio.
If the set first proportion is 80%, the operation frequency of the compressor in the air-conditioning operation refrigeration mode is 1200Hz, and the operation frequency of the compressor after the first stage of frequency reduction is 1200 × 80% — 960 Hz.
And/or, controlling and improving the valve degree of the throttling device; here, the increased degree of openness is based on an initial degree of openness of the throttle device in the cooling mode of air-conditioning operation.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the operation frequency of the compressor and/or the valve degree of the throttling device can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value, so that the condensation amount of the air conditioner can be adjusted. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In an embodiment, the first indoor humidity value of the space where the air conditioner is located after the compressor is operated in one-stage down-conversion and/or the throttle valve is increased for the first set period of time is obtained in step S903. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S901 to S909 to reduce the humidity of the indoor environment to a humidity condition in which the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the step S301 is referred to for detecting the second indoor humidity value, and the second set time period is preferably 10 to 15 minutes;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the secondary operation frequency of the compressor of the air conditioner. Here, the two-stage down-conversion is to reduce the operating frequency of the compressor at a set second rate based on the operating frequency of the compressor after the one-stage down-conversion of the air conditioner.
If the set second proportion is also 80%, the running frequency of the compressor obtained after the primary frequency reduction of the air conditioner is 960Hz, and the running frequency of the compressor after the secondary frequency reduction is 960 x 80% to 768 Hz.
And/or, increasing the throttle valve of the throttle device again; here, the increased degree of openness is based on a secondary degree of openness adjustment of the air conditioner on the basis of the degree of openness of the aforementioned first increased throttle device.
Therefore, the running frequency of the compressor is reduced and/or the valve opening of the throttling device is improved again in the fresh air mode, the introduced dry outdoor fresh air and the compressor frequency reduction (and/or the valve opening is improved) are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free from condensation or less in condensation.
Preferably, when the second indoor humidity value is greater than the condensation humidity threshold value, the second-stage frequency reduction operation and the valve opening adjustment can be performed on the compressor, and meanwhile, the wind speed gear for increasing the fresh air mode can be controlled, if the initial wind speed gear in the step S909 when the air conditioner operates in the fresh air mode is the medium wind gear, when the second indoor humidity value is greater than the condensation humidity threshold value, the fresh air mode of the air conditioner can be increased from the medium wind gear to the high wind gear, so that the speed of conveying outdoor air to the indoor environment by the air conditioner is increased, and the reduction of the humidity of the indoor air is accelerated.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in the step S909 may be determined according to the humidity difference between the first indoor humidity value and the first outdoor humidity value obtained in the step S903.
Fig. 10 is a second flowchart of the air conditioner condensation prevention control method according to the present invention shown in the embodiment (v).
S1001, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s1002, acquiring an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s1003, judging whether the initial indoor humidity value RH0 is larger than the condensation humidity threshold RHn, if so, executing step S1004, otherwise, returning to execute step S1002;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S1002 is greater than the condensation humidity threshold 80%, and step S1004 is executed;
s1004, first-stage frequency reduction of the compressor and/or increasing the valve degree of the throttling device;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
the valve degree of the throttling device is increased by 50 steps;
s1005, judging whether the first set time length is reached, if yes, executing a step S1006, and if not, repeatedly executing the step S1005;
in this embodiment, the first set time period is 10 min;
s1006, acquiring a first outdoor temperature Tp1 of a space where the air conditioner is located and a set target temperature Tn;
s1007, calculating a temperature difference value delta T2 between the first outdoor temperature Tp1 and a target temperature Tn;
s1008, judging whether the temperature difference value delta T2 is smaller than a preset temperature difference threshold value delta Tp, if so, executing S1006, otherwise, executing S1022;
in this embodiment, the temperature difference threshold Δ Tp is 5 ℃, when Δ T2 is less than 5 ℃, it indicates that the outdoor environment temperature is close to the target temperature set by the user, and the fresh air mode is turned on to introduce the outdoor air device into the room, so that the temperature of the indoor air can reach the target temperature as soon as possible.
S1009, acquiring a first indoor humidity value RH 1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s1010, obtaining a first outdoor humidity value RHP 1;
s1011, obtaining a first inner coil temperature Tp 1;
s1012, calculating an indoor dew point temperature Te;
in an embodiment, the indoor dew point temperature value may be calculated according to the following formula:
Te＝-24.5+A*T1+28.6*RH1；
here, Te is an indoor dew point temperature value, -24.5 is a calculation constant, a and 28.6 are calculation coefficients, and T1 is a current indoor temperature value (which can be detected by a temperature sensor);
s1013, judging whether the first inner coil temperature Tp1 is less than or equal to the indoor dew point temperature Te, if so, executing step 1014, and if not, executing step S1021;
s1014, judging whether the first indoor humidity value RH1 is larger than a preset condensation humidity threshold value RHn, if so, executing the step S1015, otherwise, executing the step S1021;
s1015, judging whether the first outdoor humidity value RHP1 is smaller than a preset outdoor humidity threshold value RHM, if so, executing the step S1016, otherwise, executing the step S1021;
s1016, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s1017, judging whether the second set time length is reached, if yes, executing the step S1018, and if not, repeatedly executing the step S1017;
in this embodiment, the second set time period is 10 min;
s1018, acquiring a second indoor humidity value RH 2;
s1019, judging whether the second indoor humidity value RH2 is greater than the condensation humidity threshold RHn, if so, executing a step 1020, and if not, executing a step 1021;
s1020, performing secondary frequency reduction on the compressor, improving the degree of valve of the throttling device, adjusting the fresh air mode to a high air gear, and ending the process;
in step S1020, the degree of valve is increased by 50 steps again;
and S1021, maintaining the current running state unchanged, and ending the process.
According to the control method for preventing condensation of the air conditioner, the outdoor temperature is close to the set target temperature, the temperature value of the inner coil is smaller than or equal to the indoor dew point temperature value, the indoor humidity value is larger than the preset condensation humidity threshold value, and the indoor moisture content is larger than the outdoor moisture content under the condition that the outdoor temperature is close to the set target temperature, the temperature value of the inner coil is smaller than or equal to the indoor dew point temperature value, the indoor humidity value is larger than the preset condensation humidity threshold value, the air with low humidity in the outdoor environment can be introduced into the indoor environment by switching to the fresh air mode for operation, so that the air humidity and the water vapor content in the indoor environment are reduced, the water vapor condensation amount of the air conditioner during the cyclic conveying.
Example (six)
Fig. 11 is a first flowchart illustrating a control method for preventing condensation of an air conditioner according to the fourth embodiment of the present invention.
As shown in fig. 11, the present invention further provides a control method for preventing condensation of an air conditioner, which can also be used for adjusting an operation mode of the air conditioner according to an environmental parameter of a space where the air conditioner is located, and reducing the condensation amount of the air conditioner by introducing indoor fresh air through an operation fresh air mode; specifically, the flow steps of the control method mainly include:
s1101, acquiring a first indoor humidity value of a space where an air conditioner is located, and determining a first indoor moisture content;
in this embodiment, the indoor unit of the air conditioner is configured with a humidity sensor, the humidity sensor can be used to detect a current humidity parameter of the indoor environment, and the current humidity parameter detected by the humidity sensor can be obtained in step S1101 and used as the first indoor humidity value.
Or, an independent humidity sensor or a similar device with a humidity detection function can be configured in the indoor environment of the user, the humidity sensor is used for detecting the current humidity parameter of the indoor environment, and the air conditioner and the humidity sensor carry out data communication through a home local area network, so that the current humidity parameter of the indoor environment can be obtained from the humidity sensor.
In step S1101, the first indoor moisture content may be calculated by an algorithm known to those skilled in the art, and will not be described herein.
In this embodiment, the moisture content of the indoor air per unit volume is calculated by the above formula, and the total moisture content of the indoor space can be further calculated according to the volume of the indoor space pre-stored or set by the user.
S1102, acquiring a target indoor humidity value set by the air conditioner, and determining a target indoor moisture content;
in this embodiment, the target indoor humidity value is the indoor humidity that can be achieved by the user through the desired air conditioning operation set by the remote controller or the control panel, for example, the target indoor humidity value set by the user in the cooling mode is 40%, 50%, or the like.
Similarly, the target indoor moisture content may be obtained in the calculation manner of step S1101, and the target total moisture content of the indoor space under the target indoor humidity condition may be further obtained.
S1103, acquiring a first outdoor humidity value of a space where the air conditioner is located, and determining a first outdoor moisture content;
in this embodiment, the manner of acquiring the first outdoor humidity value may refer to step S101, which is not described herein.
Similarly, the first outdoor moisture content may be obtained in the calculation manner of step S1101, where the first outdoor moisture content is the moisture content per unit volume of outdoor air.
S1104, determining indoor outdoor fresh air volume introduced in the fresh air mode of air conditioner operation according to the moisture content difference value between the first indoor moisture content and the target indoor moisture content and the first outdoor moisture content;
here, the moisture content difference is a difference between the total moisture content calculated in the foregoing step and the target total moisture content.
In this embodiment, the quotient obtained by dividing the outdoor fresh air volume by the first outdoor moisture content is the outdoor fresh air volume.
And S1105, controlling the fresh air mode of the air conditioner according to the outdoor fresh air volume.
In the embodiment of the invention, the condensation amount on the heat exchanger of the indoor unit is not only influenced by the current humidity of the indoor environment, but also influenced by the temperature of the refrigerant flowing through the heat exchanger; the lower the refrigerant temperature that flows through the heat exchanger, then the condensation volume on the heat exchanger is more, and the refrigerant temperature that flows through the heat exchanger is higher, then the condensation volume on the heat exchanger just is less, like this, through adjusting the refrigerant temperature that flows through the heat exchanger, also can reach the purpose that changes air conditioner condensation volume.
The temperature of a refrigerant of the air conditioner is mainly controlled by the operating frequency of the compressor, and the operating frequency of the compressor is high, so that the heat contained in the outputted refrigerant is large, and the temperature of the refrigerant is high; the operating frequency of the compressor is low, the heat contained in the output refrigerant is low, and the temperature of the refrigerant is low, so that the temperature of the refrigerant flowing through the heat exchanger can be adjusted by controlling the operating frequency of the compressor, and the control effect on the condensation amount of the air conditioner is further realized.
Specifically, the control method of the present invention further includes:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode; in the embodiment, the condensation problem generally occurs in summer with high temperature and high humidity, at this time, the air conditioner mostly operates in a refrigeration mode, and the invention detects the initial indoor humidity value in the refrigeration mode; here, the air conditioner has not operated the fresh air mode in step 1105;
in an embodiment, the step S1101 may be referred to as a detection method of the initial indoor humidity value, which is not described herein again.
Comparing the initial indoor humidity value with a condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling a compressor of the air conditioner to carry out primary frequency reduction; here, the one-stage down conversion is based on the operating frequency of the compressor in the air-conditioning operation cooling mode, and the operating frequency of the compressor is reduced according to the set first ratio.
If the set first proportion is 80%, the operation frequency of the compressor in the air-conditioning operation refrigeration mode is 1200Hz, and the operation frequency of the compressor after the first stage of frequency reduction is 1200 × 80% — 960 Hz.
Therefore, before the air conditioner judges whether to operate the fresh air mode according to the indoor and outdoor humidity parameters, the operation frequency of the compressor can be adjusted according to the comparison result of the initial indoor humidity value and the condensation indoor threshold value so as to adjust the condensation amount of the air conditioner. The control mode has the advantages that the temperature disturbance influence of outdoor air introduced by the fresh air mode on indoor air can be avoided, and the stability of indoor environment temperature is ensured.
In the embodiment, the first indoor humidity value of the space where the air conditioner is located after the compressor is operated in the one-stage down mode for the first set time period is acquired in step S1101. In this way, in the case where the frequency adjustment of the compressor fails to solve the air conditioning condensation, the air moisture content of the indoor environment is adjusted by the control flow of steps S1101 to S1105 so as to reduce the humidity of the indoor environment to a humidity condition where the air conditioner is not or is less condensed.
Preferably, the first set time period is 10 to 15 minutes.
In an embodiment of the present invention, to improve the accuracy of the air conditioner controlling the indoor humidity in the fresh air mode, the control method of the present invention further includes:
acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the air conditioner operation fresh air mode is acquired; in this embodiment, the second indoor humidity value is detected in the manner of referring to step S1101, and the second set time period is preferably 10 to 15 minutes;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the secondary operation frequency of the compressor of the air conditioner. Here, the two-stage down-conversion is to reduce the operating frequency of the compressor at a set second rate based on the operating frequency of the compressor after the one-stage down-conversion of the air conditioner.
If the set second proportion is also 80%, the running frequency of the compressor obtained after the primary frequency reduction of the air conditioner is 960Hz, and the running frequency of the compressor after the secondary frequency reduction is 960 x 80% to 768 Hz.
Therefore, the running frequency of the compressor is reduced again in the fresh air mode, the two control modes of introducing dry outdoor fresh air and reducing the frequency of the compressor are combined, and the surface temperature of the heat exchanger of the indoor unit is further reduced under the condition of reducing the moisture content of indoor air, so that the indoor unit can be free from condensation or less in condensation.
Preferably, when the second indoor humidity value is greater than the condensation humidity threshold value, not only can the compressor be subjected to the second-stage frequency reduction operation, and simultaneously, the wind speed gear of the fresh air mode can be controlled to be improved, if the initial wind speed gear of the air conditioner in the step S1105 during the fresh air mode running is the medium wind gear, when the second indoor humidity value is greater than the condensation humidity threshold value, the fresh air mode of the air conditioner can be improved to the high wind gear from the medium wind gear, so that the speed of conveying outdoor air to the indoor environment by the air conditioner is improved, and the humidity of the indoor air is reduced.
In this embodiment, when the second indoor humidity value is smaller than the condensation humidity threshold, the current operation state of the air conditioner is maintained.
In an embodiment, the control method further comprises: and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value. When the humidity difference value between the first indoor humidity value and the first outdoor humidity value is small, the outdoor air in unit volume can neutralize the indoor air to a smaller amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a higher wind speed gear to improve the conveying capacity of the outdoor air; when the humidity difference between the first indoor humidity value and the first outdoor humidity value is large, outdoor air in unit volume can neutralize indoor air to a large amount of condensation humidity threshold, so that the initial wind speed gear of the fresh air mode can be determined to be a low wind speed gear, extra power consumption of the air conditioner in the fresh air running mode is reduced, and energy conservation and consumption reduction are achieved.
For example, when the humidity difference value between the first indoor humidity value and the first outdoor humidity value is less than or equal to 20% relative humidity, the initial wind speed gear of the fresh air mode is determined as a high wind gear; and when the humidity difference value between the first indoor humidity value and the second outdoor humidity value is greater than 20% relative humidity, determining the initial wind speed gear of the fresh air mode as a medium wind gear, and the like.
In this way, the initial wind speed gear in the fresh air mode of the air conditioner in step S1105 can be determined according to the humidity difference between the first indoor humidity value obtained in step S1101 and the first outdoor humidity value obtained in step S1103.
Fig. 12 is a second flowchart of the air conditioner condensation prevention control method according to the present invention shown in embodiment (six).
S1201, refrigerating operation of an air conditioner;
generally, the condensation problem of the air conditioner occurs when the air conditioner operates in a cooling mode, so the control method for preventing condensation of the air conditioner is the condensation preventing operation when the air conditioner operates in the cooling mode;
s1202, obtaining an initial indoor humidity value RH 0;
the initial indoor humidity value RH0 is detected by a humidity sensor configured in the air conditioner;
in the present embodiment, the initial indoor humidity RH1 detected by the humidity sensor is 85% relative humidity;
s1203, judging whether the initial indoor humidity value RH0 is larger than a condensation humidity threshold RHn, if so, executing a step S1204, and if not, returning to execute the step S1202;
in this embodiment, if the condensation humidity threshold RHn is 80% of the relative humidity, the initial indoor humidity value 85% detected in step S1202 is greater than the condensation humidity threshold 80%, and step S1204 is executed;
s1204, first-stage frequency reduction of the compressor;
in the present embodiment, the operation frequency of the compressor in the cooling mode is reduced by a first ratio of 80%;
s1205, judging whether the first set time length is reached, if so, executing the step S1206, and if not, repeatedly executing the step S1205;
in this embodiment, the first set time period is 10 min;
s1206, acquiring a first indoor humidity value RH1, and calculating a first indoor humidity D1;
the first indoor humidity value RH1 is detected by a humidity sensor configured in the air conditioner;
s1207, obtaining a target indoor humidity value RHe, and determining the moisture content De in the target room;
s1208, acquiring a first outdoor humidity value RHP1, and calculating a first outdoor moisture content Dp 1;
s1209, calculating the indoor outdoor fresh air volume introduced when the air conditioner operates in the fresh air mode;
s1210, controlling the air conditioner to operate in a fresh air mode with a medium wind gear;
s1211, judging whether the second set time length is reached, if yes, executing S1212, and if not, repeatedly executing S1211;
in this embodiment, the second set time period is 10 min;
s1212, acquiring a second indoor humidity value RH 2;
s1213, judging whether the second indoor humidity value RH2 is greater than the condensation humidity threshold RHn, if so, executing a step 1214, otherwise, executing a step 1215;
s1214, performing secondary frequency reduction on the compressor, adjusting the fresh air mode to a high air gear, and ending the process;
in step S1214, the operating frequency obtained after the first stage down-conversion in step S1204 is reduced by a second ratio of 80%;
and S1215, maintaining the current running state unchanged, and ending the process.
The control method for preventing condensation of the air conditioner can determine the air volume of the outdoor air which can be supplemented in the fresh air running mode according to the indoor and outdoor humidity conditions of the space where the air conditioner is located, so that air with lower humidity in the outdoor environment is introduced into the indoor environment, the air humidity and the water vapor content in the indoor environment are reduced, the water vapor condensation amount of the air conditioner during the circulation conveying of the indoor air is further reduced, and the use experience of a user is guaranteed.
Fig. 13 is a first flowchart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 13, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used for executing the control method of the foregoing embodiment (one), specifically, the control device 1300 includes:
a first obtaining unit 1310 configured to obtain a first indoor humidity value and a first outdoor humidity value of a space where an air conditioner is located;
the first main control unit 1320 is configured to control the air conditioner to operate the fresh air mode when the first indoor humidity value is greater than the preset condensation humidity threshold and the first outdoor humidity value is less than the preset outdoor humidity threshold.
In an alternative embodiment, the control device further comprises:
the second acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
a comparison unit for comparing the initial indoor humidity value with a condensation humidity threshold value;
the second main control unit is used for controlling the first-stage frequency reduction of a compressor of the air conditioner when the initial indoor humidity value is greater than the condensation humidity threshold value;
the first obtaining unit is specifically configured to: and acquiring a first indoor humidity value of a space where the air conditioner is located after the compressor operates in a first-stage frequency reduction mode for a first set time.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling the secondary operation frequency of the compressor of the air conditioner when the second indoor humidity value is greater than the condensation humidity threshold value.
In an optional implementation manner, the second master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an optional implementation manner, the control device further includes a determining unit, configured to determine an initial wind speed gear of the fresh air mode according to a humidity difference between the first indoor humidity value and the first outdoor humidity value.
Fig. 14 is a second schematic flow chart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 14, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used to execute the control method of the foregoing embodiment (two), specifically, the control device 1400 includes:
a first obtaining unit 1410, configured to obtain a first indoor humidity value of a space where the air conditioner is located, and determine a first indoor moisture content;
a second obtaining unit 1420, configured to obtain a first outdoor humidity value of a space where the air conditioner is located, and determine a first outdoor moisture content;
the first main control unit 1430 is configured to control the air conditioner to operate in the fresh air mode when the first indoor humidity value is greater than the preset condensation humidity threshold and the first indoor moisture content is greater than the first outdoor moisture content.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the first-stage frequency reduction of a compressor of the air conditioner when the initial indoor humidity value is greater than the condensation humidity threshold value;
the first obtaining unit is specifically configured to: and acquiring a first indoor humidity value of a space where the air conditioner is located after the compressor operates in a first-stage frequency reduction mode for a first set time.
In an alternative embodiment, the control device further comprises:
the fourth acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling the secondary operation frequency of the compressor of the air conditioner when the second indoor humidity value is greater than the condensation humidity threshold value.
In an optional implementation manner, the third master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an alternative embodiment, the control device further comprises: and the determining unit is used for determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value.
Fig. 15 is a third schematic flow chart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 15, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used to execute the control method of the foregoing embodiment (three), specifically, the control device 1500 includes:
a first obtaining unit 1510, configured to obtain a first indoor humidity value, a first outdoor humidity value, and a first inner coil temperature value of the air conditioner of a space where the air conditioner is located;
a first determining unit 1520, configured to determine an indoor dew point temperature value according to the first indoor humidity value;
the first main control unit 1530 is configured to control the air conditioner to operate the fresh air mode when the first inner coil temperature value is less than or equal to the indoor dew point temperature value, the first indoor humidity value is greater than the preset condensation humidity threshold value, and the first outdoor humidity value is less than the preset outdoor humidity threshold value.
In an alternative embodiment, the control device further comprises:
the second acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the first-stage frequency reduction of a compressor of the air conditioner and/or the improvement of the valve degree of the throttling device when the initial indoor humidity value is larger than the condensation humidity threshold value;
the first obtaining unit is specifically configured to: and acquiring a first indoor humidity value of the space where the air conditioner is located after the first-stage frequency reduction operation of the compressor and/or the valve degree of the throttling device is increased for a first set time.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling the secondary frequency reduction of the compressor of the air conditioner and/or improving the valve degree of the throttling device when the second indoor humidity value is greater than the condensation humidity threshold value.
In an optional implementation manner, the third master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an alternative embodiment, the control device further comprises: and the second determining unit is used for determining an initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
Fig. 16 is a fourth schematic flowchart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 16, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used for executing the control method of the foregoing embodiment (four), specifically, the control device 1600 includes:
a first obtaining unit 1610, configured to obtain a first indoor temperature value of a space where an air conditioner is located and a set target temperature value;
a first determining unit 1620 configured to determine a temperature difference value between the first indoor temperature value and the target temperature value;
a second obtaining unit 1630, configured to obtain a first indoor humidity value, a first outdoor humidity value, and a first internal coil temperature value of the air conditioner;
a second determining unit 1640, configured to determine an indoor dew point temperature value according to the first indoor humidity value;
the first main control unit 1650 is used for controlling the air conditioner to operate in the fresh air mode when the temperature difference value is greater than a preset temperature difference threshold value, the temperature value of the first inner coil is less than or equal to an indoor dew point temperature value, the first indoor humidity value is greater than a preset condensation humidity threshold value, and the first outdoor humidity value is less than a preset outdoor humidity threshold value.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling and improving the valve degree of the throttling device when the initial indoor humidity value is larger than the condensation humidity threshold value;
the second obtaining unit is specifically configured to: and acquiring a first indoor humidity value of the space where the air conditioner is located after the valve degree of the throttling device is increased for a first set time.
In an alternative embodiment, the control device further comprises:
the fourth acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling and improving the valve degree of the throttling device when the second indoor humidity value is greater than the condensation humidity threshold value.
The third master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an alternative embodiment, the control device further comprises: and the third determining unit is used for determining an initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
Fig. 17 is a fifth schematic flowchart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 17, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used to execute the control method of the foregoing embodiment (five), specifically, the control device 1700 includes:
a first obtaining unit 1710, configured to obtain a first outdoor humidity value of a space where the air conditioner is located and a set target temperature value;
a first determination unit 1720 for determining a temperature difference value between the first outdoor temperature value and the target temperature value;
the second obtaining unit 1730, configured to obtain a first indoor humidity value, a first outdoor temperature value, and a first inner coil temperature value of the air conditioner of the space where the air conditioner is located;
a second determining unit 1740, configured to determine an indoor dew point temperature value according to the first indoor humidity value;
and the first main control unit 1750 is used for controlling the air conditioner to operate the fresh air mode when the temperature difference value is smaller than a preset temperature difference threshold value, the first inner coil temperature value is smaller than or equal to an indoor dew point temperature value, the first indoor humidity value is larger than a preset condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value.
In an alternative embodiment, the control device further comprises:
the third acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the frequency reduction of a compressor of the air conditioner and/or the improvement of the valve degree of the throttling device when the initial indoor humidity value is larger than the condensation humidity threshold value;
the second obtaining unit is specifically configured to:
and acquiring a first indoor humidity value of the space where the air conditioner is located after the first-stage frequency reduction operation of the compressor and/or the valve degree of the throttling device is increased for a first set time.
In an alternative embodiment, the control device further comprises:
the fourth acquisition unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after a second set time length of the fresh air mode of the air conditioner operation;
and the third main control unit is used for controlling the secondary frequency reduction of the compressor of the air conditioner and/or improving the valve degree of the throttling device when the second indoor humidity value is greater than the condensation humidity threshold value.
The third master control unit is further configured to: and controlling the wind speed gear for improving the fresh air mode.
In an alternative embodiment, the control device further comprises: and the third determining unit is used for determining an initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
Fig. 18 is a fifth schematic flowchart of the control device for preventing condensation of an air conditioner according to an exemplary embodiment of the present invention.
As shown in fig. 18, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used for executing the control method of the foregoing embodiment (six), specifically, the control device 1800 includes:
a first obtaining unit 1810, configured to obtain a first indoor humidity value of a space where the air conditioner is located;
a first determining unit 1820 for determining a first indoor moisture content;
a second obtaining unit 1830, configured to obtain a target indoor humidity value set by the air conditioner;
a second determining unit 1840 for determining the target indoor moisture content;
a third acquiring unit 1850 for acquiring a first outdoor humidity value of a space where the air conditioner is located;
a third determining unit 1860 for determining the first outdoor moisture content;
a fourth determining unit 1870 configured to determine, according to the moisture content difference between the first indoor moisture content and the target indoor moisture content, and the first outdoor moisture content, an outdoor fresh air volume introduced into the room when the air conditioner operates in the fresh air mode;
and the first main control unit 1880 is used for controlling the fresh air mode of the air conditioner according to the outdoor fresh air volume.
In an alternative embodiment, the control device further comprises:
the fourth acquisition unit is used for acquiring the initial indoor humidity value when the air conditioner operates in the refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the first-stage frequency reduction of a compressor of the air conditioner when the initial indoor humidity value is larger than the condensation humidity threshold value;
the first obtaining unit is specifically configured to:
and acquiring a first indoor humidity value of a space where the air conditioner is located after the compressor operates in a first-stage frequency reduction mode for a first set time.
In an alternative embodiment, the control device further comprises:
the fifth acquiring unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after the air conditioner operates in the fresh air mode for a second set time;
and the third main control unit is used for controlling the secondary frequency reduction of the compressor of the air conditioner when the second indoor humidity value is greater than the condensation humidity threshold value.
In an optional implementation manner, the third master control unit is further configured to: and controlling and improving the wind speed gear of the fresh air mode.
In an alternative embodiment, the control device further comprises: and the fifth determining unit is used for determining the initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims (8)

1. The control method for preventing condensation of the air conditioner is characterized by comprising the following steps:
acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
comparing the initial indoor humidity value with a preset condensation humidity threshold value;
when the initial indoor humidity value is larger than the condensation humidity threshold value, controlling the compressor of the air conditioner to perform primary frequency reduction and/or improving the valve degree of a throttling device;
after the compressor first-stage frequency reduction operation and/or the valve degree of the throttling device is increased for a first set time, acquiring a first outdoor temperature value of a space where an air conditioner is located and a set target temperature value, and determining a temperature difference value between the first outdoor temperature value and the target temperature value;
acquiring a first indoor humidity value of a space where the air conditioner is located;
acquiring a first outdoor humidity value and a first inner coil temperature value of the air conditioner;
determining an indoor dew point temperature value according to the first indoor humidity value;
when the temperature difference value is smaller than a preset temperature difference threshold value, the first inner coil temperature value is smaller than or equal to the indoor dew point temperature value, the first indoor humidity value is larger than the condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value, controlling the air conditioner to operate in a fresh air mode;
wherein the outdoor humidity threshold is less than the condensation humidity threshold.
2. The control method according to claim 1, characterized by further comprising:
acquiring a second indoor humidity value of the space where the air conditioner is located after the air conditioner operates in the fresh air mode for a second set time;
and when the second indoor humidity value is greater than the condensation humidity threshold value, controlling the compressor of the air conditioner to perform secondary frequency reduction and/or improving the valve degree of a throttling device.
3. The control method of claim 2, wherein when the second indoor humidity value is greater than the condensation humidity threshold, the control method further comprises:
and controlling and improving the wind speed gear of the fresh air mode.
4. The control method according to claim 1, characterized by further comprising:
and determining an initial wind speed gear of the fresh air mode according to the humidity difference value of the first indoor humidity value and the first outdoor humidity value.
5. Control device of condensation is prevented to air conditioner, its characterized in that includes:
the third acquisition unit is used for acquiring an initial indoor humidity value when the air conditioner operates in a refrigeration mode;
the comparison unit is used for comparing the initial indoor humidity value with a preset condensation humidity threshold value;
the second main control unit is used for controlling the frequency reduction of a compressor of the air conditioner and/or the improvement of the valve degree of a throttling device when the initial indoor humidity value is larger than the condensation humidity threshold value;
the first acquisition unit is used for acquiring a first outdoor temperature value of a space where an air conditioner is located and a set target temperature value after the compressor is in primary frequency reduction operation and/or the valve degree of the throttling device is increased for a first set time period;
the first determining unit is used for determining the temperature difference value between the first outdoor temperature value and the target temperature value;
the second acquisition unit is used for acquiring a first indoor humidity value, a first outdoor humidity value and a first inner coil temperature value of the air conditioner after the compressor is in primary frequency reduction operation and/or the valve degree of the throttling device is increased for a first set time period;
the second determining unit is used for determining an indoor dew point temperature value according to the first indoor humidity value;
the first main control unit is used for controlling the air conditioner to operate in a fresh air mode when the temperature difference value is smaller than a preset temperature difference threshold value, the temperature value of the first inner coil pipe is smaller than or equal to the indoor dew point temperature value, the first indoor humidity value is larger than the condensation humidity threshold value, and the first outdoor humidity value is smaller than a preset outdoor humidity threshold value;
wherein the outdoor humidity threshold is less than the condensation humidity threshold.
6. The control device according to claim 5, characterized by further comprising:
the fourth acquiring unit is used for acquiring a second indoor humidity value of the space where the air conditioner is located after the air conditioner operates in the fresh air mode for a second set time;
and the third main control unit is used for controlling the secondary frequency reduction of the compressor of the air conditioner and/or improving the valve degree of the throttling device when the second indoor humidity value is greater than the condensation humidity threshold value.
7. The control device of claim 6, wherein the third master control unit is further configured to:
and controlling and improving the wind speed gear of the fresh air mode.
8. The control device according to claim 5, characterized by further comprising:
and the third determining unit is used for determining the initial wind speed gear of the fresh air mode according to the humidity difference value between the first indoor humidity value and the first outdoor humidity value.
CN201711476084.6A 2017-12-29 2017-12-29 Control method and device for preventing condensation of air conditioner Active CN108375160B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711476084.6A CN108375160B (en) 2017-12-29 2017-12-29 Control method and device for preventing condensation of air conditioner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711476084.6A CN108375160B (en) 2017-12-29 2017-12-29 Control method and device for preventing condensation of air conditioner

Publications (2)

Publication Number Publication Date
CN108375160A CN108375160A (en) 2018-08-07
CN108375160B true CN108375160B (en) 2020-11-27

Family

ID=63016410

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711476084.6A Active CN108375160B (en) 2017-12-29 2017-12-29 Control method and device for preventing condensation of air conditioner

Country Status (1)

Country Link
CN (1) CN108375160B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6641066B1 (en) * 2019-01-10 2020-02-05 日立ジョンソンコントロールズ空調株式会社 Air conditioner
CN111140997B (en) * 2019-12-31 2021-08-24 Tcl空调器(中山)有限公司 Air conditioner control method and device, air conditioner and computer readable storage medium

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6186407B1 (en) * 1999-05-14 2001-02-13 Honeywell International Inc. Humidity control based on an estimation using heating plant cycle, of inside window surface temperature
CN103884072A (en) * 2012-12-19 2014-06-25 广东美的暖通设备有限公司 Air-conditioner, indoor unit and condensation-proof control method of air-conditioner and indoor unit
CN104613600A (en) * 2015-01-29 2015-05-13 广东美的制冷设备有限公司 Method and system for controlling air-conditioner
CN206058012U (en) * 2016-08-23 2017-03-29 南京顺泰科技有限公司 A kind of intelligent power distribution room environment comprehensive monitoring system
CN206311985U (en) * 2016-12-15 2017-07-07 贵州电网有限责任公司贵阳供电局 A kind of air-conditioning fan combination unit with temperature control function
CN107421061B (en) * 2017-07-06 2020-04-24 青岛海尔空调器有限总公司 Anti-condensation control method and device for air conditioner

Also Published As

Publication number Publication date
CN108375160A (en) 2018-08-07

Similar Documents

Publication Publication Date Title
CN108302709B (en) Control method and device for preventing condensation of air conditioner
CN108317680B (en) Control method and device for preventing condensation of air conditioner
CN108302708B (en) Control method and device for preventing condensation of air conditioner
CN108375160B (en) Control method and device for preventing condensation of air conditioner
CN111102715B (en) Air conditioner and condensation preventing method thereof
CN111102729B (en) Air conditioner and condensation preventing method thereof
CN111102728B (en) Air conditioner and condensation preventing method thereof
CN111102726B (en) Air conditioner and condensation preventing method thereof
CN108332393B (en) Control method and device for preventing condensation of air conditioner
CN111102723B (en) Air conditioner and condensation preventing method thereof
CN108317690B (en) Control method and device for preventing condensation of air conditioner
CN111102717B (en) Air conditioner and condensation preventing method thereof
CN111102722B (en) Air conditioner and condensation preventing method thereof
CN111102720B (en) Air conditioner and condensation preventing method thereof
CN111102712B (en) Air conditioner and condensation preventing method thereof
CN111102708B (en) Air conditioner and condensation preventing method thereof
CN111102710B (en) Air conditioner and condensation preventing method thereof
CN111102727B (en) Air conditioner and condensation preventing method thereof
CN111102716B (en) Air conditioner and condensation preventing method thereof
CN111102724B (en) Air conditioner and condensation preventing method thereof
CN111102725B (en) Air conditioner and condensation preventing method thereof
CN111102718B (en) Air conditioner and condensation preventing method thereof
CN111102713B (en) Air conditioner and condensation preventing method thereof
CN111102711B (en) Air conditioner and condensation preventing method thereof
CN111102709B (en) Air conditioner and condensation preventing method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20201102

Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd.

Applicant after: Haier Zhijia Co.,Ltd.

Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd.

GR01 Patent grant
GR01 Patent grant