CN107525222B - Control method and device for preventing condensation of air conditioner - Google Patents
Control method and device for preventing condensation of air conditioner Download PDFInfo
- Publication number
- CN107525222B CN107525222B CN201710645758.4A CN201710645758A CN107525222B CN 107525222 B CN107525222 B CN 107525222B CN 201710645758 A CN201710645758 A CN 201710645758A CN 107525222 B CN107525222 B CN 107525222B
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- indoor
- equal
- condensation
- threshold
- Prior art date
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- 239000003570 air Substances 0.000 title claims abstract description 204
- 238000009833 condensation Methods 0.000 title claims abstract description 80
- 230000005494 condensation Effects 0.000 title claims abstract description 57
- 238000010438 heat treatment Methods 0.000 claims abstract description 71
- 230000001276 controlling effects Effects 0.000 claims abstract description 28
- 230000002265 prevention Effects 0.000 claims abstract description 11
- 230000000875 corresponding Effects 0.000 claims description 11
- 239000003507 refrigerants Substances 0.000 abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 239000011901 water Substances 0.000 abstract description 16
- 238000007664 blowing Methods 0.000 abstract description 4
- 239000007788 liquids Substances 0.000 abstract description 3
- 238000000034 methods Methods 0.000 description 13
- 238000005057 refrigeration Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 238000004378 air conditioning Methods 0.000 description 5
- 230000002035 prolonged Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 238000010586 diagrams Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 materials Substances 0.000 description 2
- 230000001960 triggered Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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[Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000001186 cumulative Effects 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 230000000750 progressive Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/54—Heating and cooling, simultaneously or alternatively
Abstract
Description
Technical Field
The invention relates to the technical field of air conditioner condensation prevention, in particular to a control method and device for air conditioner condensation prevention.
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 of condensation of the air conditioner. 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, the control method comprising: acquiring a first operating parameter and an indoor environment parameter of an air conditioner; and when the first operation parameter and the indoor environment parameter meet the preset condensation-preventing entering condition, controlling the air conditioner to switch the heating mode to operate.
Further, the first operating parameter includes at least: the wind speed gear of the air conditioner and the running time of the compressor are prolonged; the indoor environmental parameters include at least: indoor ambient temperature and indoor ambient humidity; the anti-condensation entry conditions include: when the wind speed gear of the air conditioner is a high wind gear or a medium wind gear, the indoor environment temperature is greater than or equal to a first temperature threshold value, the indoor environment humidity is greater than or equal to a first humidity threshold value, and the running time of the compressor is greater than or equal to a first time threshold value; or when the wind speed gear of the air conditioner is a low wind gear, the indoor environment temperature is greater than or equal to a second temperature threshold, the indoor environment humidity is greater than or equal to a second humidity threshold, and the operation time of the compressor is greater than or equal to a second time threshold.
Further, the first temperature threshold is greater than or equal to a second temperature threshold, the first humidity threshold is greater than or equal to a second humidity threshold, and the first duration threshold is greater than or equal to a second duration threshold.
Further, before controlling the air conditioner to switch to the heating mode for operation, the control method further includes: and stopping the operation of the compressor, and controlling the indoor fan to operate at the maximum wind speed for a first set time.
Further, the control of the air conditioner to switch the heating mode to operate comprises the following steps: starting the operation of the compressor, and controlling the four-way valve to be switched to a valve position corresponding to the heating mode; and controlling to stop the operation of the indoor fan and closing the air deflector of the indoor unit.
Further, the control method further comprises: acquiring a second operating parameter of the air conditioner, wherein the second operating parameter comprises one or more of the following parameters: the duration of the heating mode of the air conditioner and the running state of the compressor; and when the second operation parameter meets a preset condensation-prevention exit condition, controlling the air conditioner to stop the operation of the heating mode, wherein the condensation-prevention exit condition comprises one or more of the following conditions: the duration of the air conditioner operation heating mode is greater than or equal to a preset second set duration, and the compressor sends a protection signal or a fault signal.
According to a second aspect of the present invention, there is also provided a control apparatus for preventing condensation of an air conditioner, the control apparatus including: the first acquisition unit is used for acquiring a first operating parameter and an indoor environment parameter of the air conditioner; and the first switching unit is used for controlling the air conditioner to switch the heating mode to operate when the first operating parameter and the indoor environment parameter meet the preset condensation-preventing entering condition.
Further, the first operating parameter includes at least: the wind speed gear of the air conditioner and the running time of the compressor are prolonged; the indoor environmental parameters include at least: indoor ambient temperature and indoor ambient humidity; the anti-condensation entry conditions include: when the wind speed gear of the air conditioner is a high wind gear or a medium wind gear, the indoor environment temperature is greater than or equal to a first temperature threshold value, the indoor environment humidity is greater than or equal to a first humidity threshold value, and the running time of the compressor is greater than or equal to a first time threshold value; or when the wind speed gear of the air conditioner is a low wind gear, the indoor environment temperature is greater than or equal to a second temperature threshold, the indoor environment humidity is greater than or equal to a second humidity threshold, and the operation time of the compressor is greater than or equal to a second time threshold.
Further, the first temperature threshold is greater than or equal to a second temperature threshold, the first humidity threshold is greater than or equal to a second humidity threshold, and the first duration threshold is greater than or equal to a second duration threshold.
Further, the control device method further includes a first control unit configured to: before the first switching unit controls the air conditioner to switch the heating mode to operate, the operation of the compressor is stopped, and the indoor fan is controlled to operate at the maximum air speed for a first set time.
Further, the first switching unit includes: the first switching subunit is used for starting the operation of the compressor and controlling the four-way valve to be switched to a valve position corresponding to the heating mode; and the second switching subunit is used for controlling and stopping the operation of the indoor fan and closing the air deflector of the indoor unit.
Further, the control device further includes: the second obtaining unit is used for obtaining a second operating parameter of the air conditioner, wherein the second operating parameter comprises one or more of the following parameters: the duration of the heating mode of the air conditioner and the running state of the compressor; the second switching unit is used for controlling the air conditioner to stop the operation of the heating mode when the second operation parameter meets a preset condensation-proof exit condition, wherein the condensation-proof exit condition comprises one or more of the following conditions: the duration of the air conditioner operation heating mode is greater than or equal to a preset second set duration, and the compressor sends a protection signal or a fault signal.
The control method for preventing condensation of the air conditioner can control the air conditioner to be switched into a heating mode to operate when the condition of preventing condensation from entering is met, and water drops condensed in the indoor unit can be evaporated into water vapor through the heat of the high-temperature refrigerant conveyed to the indoor heat exchanger, so that the quantity of liquid water in the indoor unit is reduced, the problems of air conditioner condensation water dropping, water blowing during air outlet and the like are avoided, and the service performance and the user experience of the air conditioner are improved.
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 flowchart illustrating an anti-condensation control method of an air conditioner according to an exemplary embodiment of the present invention;
FIG. 2 is a flowchart II illustrating an anti-condensation control method of an air conditioner according to an exemplary embodiment of the present invention;
fig. 3 is a block diagram illustrating an exemplary embodiment of an anti-condensation control apparatus for an air conditioner.
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.
Generally, an existing air conditioner includes an indoor heat exchanger, an outdoor heat exchanger, a throttling device, and a compressor, the indoor heat exchanger, the outdoor heat exchanger, the throttling device, and the compressor are connected by a refrigerant pipeline to form a refrigerant circulation loop, and a refrigerant flows along flow directions set by different operation modes through the refrigerant circulation loop, so as to realize heating and cooling functions thereof.
In an embodiment, the operation modes of the air conditioner comprise a refrigeration mode, a heating mode and an anti-condensation mode, wherein the refrigeration mode is generally applied to a high-temperature working condition in summer and used for reducing the indoor environment temperature; the heating mode is generally applied to the low-temperature working condition in winter and is used for increasing the indoor environment temperature; the condensation preventing mode is generally a function mode of self-starting of the air conditioner, and condensation removing operation can be performed on the heat exchanger under the condition that more dew is condensed on components such as the heat exchanger and the air duct in the indoor unit.
When the air conditioner operates in a refrigeration mode, the set refrigerant flow direction is that high-temperature refrigerant discharged by the compressor firstly flows through the outdoor heat exchanger to exchange heat with the outdoor environment, then flows into the indoor heat exchanger to exchange heat with the indoor environment, and finally the refrigerant flows back to the compressor to be compressed again; in the process, the refrigerant flowing through the outdoor heat exchanger emits heat to the outdoor environment, the refrigerant flowing through the indoor heat exchanger absorbs heat from the indoor environment, and the indoor heat can be continuously discharged to the outdoor environment through the circulating flow of the refrigerant in the refrigerant circulating loop, so that the refrigeration purpose of reducing the temperature of the indoor environment can be achieved.
The set refrigerant flow direction during the heating mode refers to that the high-temperature refrigerant discharged by the compressor firstly flows through the indoor heat exchanger to exchange heat with the outdoor environment, then flows into the outdoor heat exchanger to exchange heat with the indoor environment, and finally flows back to the compressor to be compressed again; in the process, the refrigerant flowing through the indoor heat exchanger emits heat to the indoor environment, the refrigerant flowing through the outdoor heat exchanger absorbs heat from the outdoor environment, and the outdoor heat can be continuously released to the indoor environment through the circulating flow of the refrigerant in the refrigerant circulating loop, so that the heating purpose of improving the temperature of the indoor environment can be achieved.
Therefore, when the air conditioner runs in a heating mode, the high-temperature refrigerant firstly flows through the indoor heat exchanger, so that the cold energy of the high-temperature refrigerant can increase the internal temperature of the indoor unit, and when the internal temperature of the indoor unit is higher than the evaporation critical temperature value of the current working condition, the dew condensed in the indoor unit can be gradually vaporized and evaporated, so that the liquid dew can be changed into gaseous water vapor. The control method of the invention is that under the condition that dew condensed on an indoor unit of the air conditioner is more, the air conditioner is switched to the anti-condensation mode to operate, and under the condition that the air conditioner is controlled to flow in a refrigerant flow direction limited by a heating mode, the condensation removing operation of the indoor unit is realized by adjusting the operation parameters of components such as a compressor, an inner fan, a throttling device and the like, so as to prevent the dew on the indoor unit from being condensed too much.
FIG. 1 is a flowchart 1 illustrating an anti-condensation control method of the present invention according to one exemplary embodiment.
As shown in fig. 1, the present invention provides a control method for preventing condensation of an air conditioner, including:
s101, acquiring a first operation parameter and an indoor environment parameter of an air conditioner;
in this embodiment, the first operating parameter at least includes: the wind speed gear of the air conditioner and the running time of the compressor.
Specifically, the wind speed gears of the air conditioner are generally divided into a high wind gear, a medium wind gear and a low wind gear, when the air conditioner runs at different set wind speed gears, the indoor air quantity flowing through the indoor unit in unit time is also different, and the higher the wind speed gear of the air conditioner is, the faster the air flow rate flowing through the indoor unit is, so the more the air quantity flowing through the indoor unit in unit time is; on the contrary, the smaller the amount of air flowing through the indoor unit per unit time.
Under the condition of not considering the water vapor consumed by the condensation and dehumidification of the air conditioner, the water vapor content of the indoor air of unit volume is generally constant by default, so that the water vapor amount flowing through the indoor unit is increased under the condition of increasing the air amount flowing through the indoor unit, and further the condensed dew amount on the indoor unit is increased; on the other hand, the smaller the amount of air flowing through the indoor unit, the smaller the amount of dew condensation water condensed on the indoor unit.
Therefore, the wind speed gear in the actual operation process of the air conditioner can directly influence the amount of condensed water and vapor, in this embodiment, the higher the wind speed gear of the air conditioner is, the more dew is condensed on the indoor unit, and the lower the wind speed gear of the air conditioner is, the less dew is condensed on the indoor unit. Therefore, the wind speed gear of the air conditioner is used as an operation parameter for judging whether the air conditioner needs to enter the condensation prevention mode, and the accuracy of judging the condensation amount can be effectively improved.
In other embodiments of the present invention, the wind speed gears of the air conditioner further include a super strong wind speed gear and a super quiet wind speed gear, wherein the super strong wind speed gear can determine the condensation amount of the dew according to a manner similar to the medium and high wind gears in the foregoing embodiments, and the super quiet gear can determine the condensation amount of the dew according to a manner similar to the low wind gear in the foregoing embodiments.
In this embodiment, the wind speed gear of the air conditioner mainly affects the rate of condensation of water vapor into dew, and in addition, the total amount of dew condensed on the indoor unit is gradually increased along with the cumulative increase of the running time of the air conditioner, so the present invention also uses the running time of the compressor as a running parameter for judging whether to enter the anti-condensation mode, generally, under the condition that the running time of the compressor is short, the amount of dew condensed on the indoor unit is small, and large water drops cannot be formed, and under the condition that the running time of the compressor is long, the amount of dew condensed on the indoor unit is large, and large water drops are easily formed, so that the problem of 'water blowing' occurs when the air conditioner supplies air to the room.
Namely, the amount of dew water condensed on the indoor unit can be judged through the operation time of the compressor of the air conditioner, and the accuracy of judging the dew amount can be improved.
In this embodiment, the indoor environment parameters at least include: indoor ambient temperature and indoor ambient humidity.
Specifically, because the temperature of the gaseous water vapor in the indoor environment is equal to or close to the indoor environment temperature, the higher the indoor environment temperature is, the higher the temperature of the water vapor is, the larger the temperature difference between the water vapor and indoor machine components such as an indoor heat exchanger is, and the more easily the water vapor is condensed into dew; conversely, the lower the indoor environment temperature is, the lower the temperature of the water vapor is, the smaller the temperature difference between the water vapor and indoor machine components such as the indoor heat exchanger is, and the water vapor is less likely to condense into dew. The condensation problem of the air conditioner mainly occurs in summer high-temperature working conditions, so that the accuracy of condensation quantity judgment can be further improved by taking the indoor environment temperature as an indoor environment parameter for judging whether the condensation prevention mode needs to be started or not.
Similarly, the amount of the indoor environment humidity can directly reflect the amount of the water vapor which is taken as a dew source, and the higher the indoor environment humidity is, the higher the water vapor content in the air is, so that the more the indoor air can be condensed into dew when passing through the indoor unit; conversely, the lower the indoor ambient humidity, the lower the moisture content in the air, and therefore the less the amount of moisture that can condense into dew when the indoor air passes through the indoor unit. Therefore, the invention also takes the indoor environment humidity as an indoor environment parameter for judging whether the anti-condensation mode needs to be entered, so as to ensure the judgment accuracy of the whole control flow.
And S102, controlling the air conditioner to switch the heating mode to operate when the first operation parameter and the indoor environment parameter meet a preset condensation-preventing entering condition.
In this embodiment, the preset condensation-preventing entry condition according to the first operating parameter and the indoor environment parameter includes:
one of the conditions is that when the wind speed gear of the air conditioner is a high wind gear or a medium wind gear, the indoor environment temperature is greater than or equal to a first temperature threshold value, the indoor environment humidity is greater than or equal to a first humidity threshold value, and the running time of the compressor is greater than or equal to a first time threshold value. Under the condition that the conditions are met, the condensed water and steam quantity of the air conditioner indoor unit is large when the air conditioner indoor unit operates at the middle and high wind gear positions, condensation of the indoor unit needs to be removed, and the situation that excessive dew is blown into an indoor environment to affect the use experience of a user can be prevented.
Or, in another condition, when the wind speed gear of the air conditioner is a low gear, the indoor environment temperature is greater than or equal to a second temperature threshold, the indoor environment humidity is greater than or equal to a second humidity threshold, and the operation time of the compressor is greater than or equal to a second time threshold. Under the condition that the conditions are met, the condensed water and steam quantity of the air conditioner indoor unit is large when the air conditioner indoor unit operates at a low wind gear, and condensation of the air conditioner indoor unit needs to be removed, so that excessive dew is prevented from being blown into an indoor environment, and the use experience of a user is prevented from being influenced.
Therefore, in the actual operation process of the air conditioner, the current operation wind speed gear of the air conditioner can be determined firstly, and then the condensation-preventing entry condition needing to be judged under the current working condition is selected according to the wind speed gear, so that the selected condensation-preventing entry condition can be matched with the current operation state and the indoor working condition of the air conditioner.
Preferably, the medium and high wind speed gears are operated under the working condition of high indoor temperature and humidity, so that in the preset condensation-preventing entry condition, the first temperature threshold corresponding to the medium and high wind gears is generally greater than or equal to the second temperature threshold corresponding to the low wind gear, the first humidity threshold is greater than or equal to the second humidity threshold, and the first time threshold is greater than or equal to the second time threshold. Therefore, the parameter range contained in the anti-condensation condition is divided into two or more types according to the wind speed gear of the indoor unit, and the fineness of the judging process can be effectively improved.
Generally, an air conditioner mainly operates in a refrigeration mode under the high-temperature working condition in summer, a refrigerant flows in a flow direction limited by the refrigeration mode, and the refrigerant is in a low-temperature state when flowing through an indoor unit, so that the temperature of indoor unit components such as an indoor heat exchanger is low; when the air conditioner enters the anti-condensation mode and is switched to the heating mode to operate, the refrigerant is switched to flow in the flow direction limited by the heating mode, and the refrigerant is in a high-temperature state when flowing through the indoor unit, so that the temperature of indoor unit components such as the indoor heat exchanger and the like can be rapidly increased.
Therefore, in order to avoid adverse effects caused by severe temperature changes of low-temperature refrigerants and high-temperature refrigerants remained in the indoor heat exchanger when the air conditioner operates in the cooling mode and the heating mode, the operation of the compressor is stopped before the operation of the heating mode is switched, so that the low-temperature refrigerants can be prevented from being continuously conveyed to the indoor heat exchanger, part of the refrigerants remained in the refrigerant circulating pipeline can gradually flow back to the compressor, and the amount of the low-temperature refrigerants remained in the refrigerant circulating loop can be effectively reduced.
In addition, when the air conditioner operates in the cooling mode, the temperature in the indoor unit is low, and evaporation of dew after the heating mode is switched is not facilitated, so that the indoor fan can be controlled to operate at the maximum wind speed for a first set time before the heating mode is switched, the cold in the indoor unit can be discharged into the indoor environment, the initial temperature in the indoor unit when the air conditioner is switched into the heating mode is improved, and the efficiency of dew evaporation is improved.
In this embodiment, after the air conditioner switches the heating mode to operate, the compressor is restarted to operate, and the four-way valve is controlled to switch to the valve position corresponding to the heating mode, so that a high-temperature refrigerant discharged by the compressor can flow into the indoor heat exchanger according to the refrigerant flow direction limited by the heating mode, the temperature of the indoor heat exchanger is increased by using the heat of the high-temperature refrigerant, dew condensed on the indoor heat exchanger is evaporated, and the purpose of removing the dew is achieved.
Meanwhile, in order to reduce the transfer of refrigerant heat to the indoor environment when the air conditioner operates in the heating mode, the air conditioner controls to stop the operation of the indoor fan and closes the air deflector of the indoor unit when the air conditioner operates in the heating mode, so that the rise of the indoor temperature is avoided, and the use experience of a user is ensured.
Generally, the time that the air conditioner operated the mode of heating under summer operating mode should not be too short to avoid causing the not good problem of condensation of removing, consequently, in this embodiment, after the air conditioner got into and prevents the condensation mode, the air conditioner still can acquire the second operating parameter of air conditioner, and judge whether satisfy the condensation of preventing that predetermineeing and withdraw from the condition according to at second operating parameter, if satisfy and prevent the condensation and withdraw from the condition, control the air conditioner and stop the mode operation of heating.
Specifically, the second operating parameter includes one or more of the following: the duration of the heating mode of the air conditioner and the running state of the compressor; the duration of the heating mode of the air conditioner is the time interval between the moment when the air conditioner switches the heating mode and the current moment, and can indicate the operation duration of the heating mode; in addition, when the air conditioner operates under a high-temperature working condition in summer, the protection mode of the compressor may be triggered, and if the heating mode is still operated when the protection mode of the compressor is triggered, the compressor is damaged, so that whether the anti-condensation exit condition is met or not needs to be judged according to the operation state of the compressor.
In this embodiment, the condensation-preventing exit condition includes one or more of the following:
the duration of the air-conditioning operation heating mode is greater than or equal to a preset second set duration, wherein the second set duration is the shortest duration of the air-conditioning operation condensation prevention mode, and under the condition that the duration does not exceed the second set duration, the residual dew amount in the indoor unit is still large, and the condensation removal effect is poor; under the condition that the duration exceeds the second set duration, the residual dew amount in the indoor unit is less, and the actual dew removing effect is better.
Or, the compressor sends out a protection signal or a fault signal, and when the compressor sends out the protection signal or the fault signal, the condition that the air conditioner can not continuously run in the heating mode is indicated, so that the heating mode needs to be stopped.
In the actual operation process of the air conditioner, if a protection signal or a fault signal of the compressor is not received in the process of the air conditioner operation anti-condensation mode, whether the anti-condensation exit condition is met or not can be judged according to the duration time of the air conditioner operation heating mode, when the anti-condensation exit condition is met, the air conditioner is controlled to exit the anti-condensation mode, specifically, the compressor is controlled to stop operating, the four-way valve is switched to a valve position corresponding to the cooling mode, and therefore the high-temperature refrigerant remained in the indoor heat exchanger gradually flows back into the compressor; and then, the compressor is restarted, the refrigerant flows in the refrigerant flow direction limited by the refrigeration mode, the inner fan is set to run at a high wind gear speed, and the throttling device is opened at the maximum reference opening degree, so that the temperature of the indoor unit can reach the temperature condition required by refrigeration as soon as possible.
FIG. 2 is a flowchart II illustrating an anti-condensation control method of an air conditioner according to an exemplary embodiment of the present invention; in the application scenario shown in fig. 2, the specific control flow of the air conditioner condensation prevention of the present invention is as follows:
s201, operating an air conditioner in an initial mode;
in the embodiment, the air conditioner condensation problem mostly occurs in the summer high-temperature high-humidity working condition, and under the working condition, the initial mode of the air conditioner is generally a refrigeration mode;
that is, the air conditioner determines whether condensation removal is required during the operation of the cooling mode, and switches to a corresponding condensation removal operation mode when the condensation removal is required.
S202, acquiring a first operation parameter and an indoor environment parameter of the air conditioner;
in this embodiment, the first operating parameter at least includes: the wind speed gear of the air conditioner and the running time of the compressor are prolonged;
the indoor environmental parameters include at least: indoor ambient temperature and indoor ambient humidity;
in an embodiment, the air conditioner is provided with a temperature sensor which can be used for detecting the indoor environment temperature; the air conditioner is also provided with a humidity sensor which can be used for detecting the indoor environment humidity;
s203, determining an anti-condensation entering condition according to the wind speed gear of the air conditioner, if the wind speed gear is a middle wind gear or a high wind gear, executing a step S204, and if the wind speed gear is a low wind gear, executing a step S205;
s204, judging whether the indoor environment temperature is greater than or equal to a first temperature threshold, whether the indoor environment humidity is greater than or equal to a first humidity threshold, and whether the running time of the compressor is greater than or equal to a first time threshold, if so, executing a step S206, otherwise, continuing to execute a step S202;
s205, judging whether the indoor environment temperature is greater than or equal to a second temperature threshold, whether the indoor environment humidity is greater than or equal to a second humidity threshold, and whether the running time of the compressor is greater than or equal to a second time threshold, if so, executing a step S206, and if not, continuing to execute a step S202;
s206, the air conditioner enters an anti-condensation mode;
s207, stopping the operation of the compressor, and controlling the indoor fan to operate at the maximum wind speed for a first set time;
s208, starting the operation of the compressor, and controlling the four-way valve to be switched to a valve position corresponding to the heating mode; controlling to stop the operation of the indoor fan and closing an air deflector of the indoor unit;
in this embodiment, the stopping of the indoor fan and the closing of the air deflector may also be completed before the operation of the compressor is started;
s209, acquiring a second operation parameter of the air conditioner;
in this embodiment, the second operating parameter includes one or more of the following: the duration of the heating mode of the air conditioner and the running state of the compressor;
s210, judging whether the second operation parameter meets a preset condensation-prevention exit condition, if so, executing a step S211, and if not, continuing to execute a step S209;
in this embodiment, the condensation-preventing exit condition includes one or more of the following: the duration of the air conditioner operation heating mode is greater than or equal to a preset second set duration, and the compressor sends a protection signal or a fault signal.
S211, controlling the air conditioner to stop the heating mode operation;
and S212, switching the air conditioner back to the initial mode for operation.
In this embodiment, the initial mode of the air conditioner is the cooling mode, and therefore, after the condensation-prevention exit condition is satisfied, the air conditioner is controlled to switch from the heating mode back to the cooling mode, and the condensation removal process is ended this time.
Fig. 3 is a block diagram illustrating the structure of an air conditioner condensation prevention control apparatus according to an exemplary embodiment of the present invention.
As shown in fig. 3, the present invention further provides a control device for preventing condensation of an air conditioner, which can be used to control the air conditioner to execute the related flow of the condensation preventing method disclosed in the foregoing embodiment, specifically, the control device includes:
a first obtaining unit 310 for obtaining a first operating parameter and an indoor environment parameter of an air conditioner;
and a first switching unit 320 for controlling the air conditioner to switch the heating mode to operate when the first operating parameter and the indoor environment parameter satisfy a preset condensation prevention entry condition.
In this embodiment, the first operating parameter at least includes: the wind speed gear of the air conditioner and the running time of the compressor are prolonged; the indoor environmental parameters include at least: indoor ambient temperature and indoor ambient humidity;
the anti-condensation entry conditions include: when the wind speed gear of the air conditioner is a high wind gear or a medium wind gear, the indoor environment temperature is greater than or equal to a first temperature threshold value, the indoor environment humidity is greater than or equal to a first humidity threshold value, and the running time of the compressor is greater than or equal to a first time threshold value; or when the wind speed gear of the air conditioner is a low wind gear, the indoor environment temperature is greater than or equal to a second temperature threshold, the indoor environment humidity is greater than or equal to a second humidity threshold, and the operation time of the compressor is greater than or equal to a second time threshold.
In this embodiment, the first temperature threshold is greater than or equal to the second temperature threshold, the first humidity threshold is greater than or equal to the second humidity threshold, and the first duration threshold is greater than or equal to the second duration threshold.
In this embodiment, the control device further includes a first control unit 330, and the first control unit 330 is configured to: before the first switching unit 320 controls the air conditioner to switch the heating mode operation, the operation of the compressor is stopped, and the indoor fan is controlled to operate at the maximum wind speed for a first set time period.
In the present embodiment, the first switching unit 320 includes: a first switching subunit 321, configured to start operation of the compressor, and control the four-way valve to switch to a valve position corresponding to the heating mode; and a second switching subunit 322, configured to control to stop operation of the indoor fan and close the air deflector of the indoor unit.
In this embodiment, the control device further includes: a second obtaining unit 340, configured to obtain a second operating parameter of the air conditioner, where the second operating parameter includes one or more of the following: the duration of the heating mode of the air conditioner and the running state of the compressor; the second switching unit 350 is configured to control the air conditioner to stop the heating mode when the second operation parameter meets a preset condensation-prevention exit condition, where the condensation-prevention exit condition includes one or more of the following conditions: the duration of the air conditioner operation heating mode is greater than or equal to a preset second set duration, and the compressor sends a protection signal or a fault signal.
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.
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| CN105928141A (en) * | 2016-04-27 | 2016-09-07 | 海信（山东）空调有限公司 | Method for controlling air conditioner and air conditioner |
| CN106322677A (en) * | 2016-08-31 | 2017-01-11 | 美的集团武汉制冷设备有限公司 | Air conditioner control method and device for preventing condensation water dripping and air conditioner |
| US20170023264A1 (en) * | 2015-07-21 | 2017-01-26 | Samsung Electronics Co., Ltd. | Air conditioner and control method thereof |
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| JP2009299914A (en) * | 2008-06-10 | 2009-12-24 | Panasonic Corp | Multiroom air conditioner |
| CN104764149A (en) * | 2015-03-26 | 2015-07-08 | 广东美的制冷设备有限公司 | Air conditioner control method, air conditioner control device and air conditioner |
| US20170023264A1 (en) * | 2015-07-21 | 2017-01-26 | Samsung Electronics Co., Ltd. | Air conditioner and control method thereof |
| CN105928141A (en) * | 2016-04-27 | 2016-09-07 | 海信（山东）空调有限公司 | Method for controlling air conditioner and air conditioner |
| CN106322677A (en) * | 2016-08-31 | 2017-01-11 | 美的集团武汉制冷设备有限公司 | Air conditioner control method and device for preventing condensation water dripping and air conditioner |
| CN106594958A (en) * | 2016-10-20 | 2017-04-26 | 珠海格力电器股份有限公司 | Control method and device for condensation prevention of air conditioner and air conditioner |
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Effective date of registration: 20200911 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Co-patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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Effective date of registration: 20201104 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee before: QINGDAO HAIER (JIAOZHOU) AIR CONDITIONER Co.,Ltd. |