CN107143994B - Air conditioner condensation prevention control method and air conditioner indoor unit - Google Patents
Air conditioner condensation prevention control method and air conditioner indoor unit Download PDFInfo
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- CN107143994B CN107143994B CN201610116054.3A CN201610116054A CN107143994B CN 107143994 B CN107143994 B CN 107143994B CN 201610116054 A CN201610116054 A CN 201610116054A CN 107143994 B CN107143994 B CN 107143994B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0001—Control or safety arrangements for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/0008—Control or safety arrangements for air-humidification
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner anti-condensation control method, which comprises the following steps: respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger; determining the maximum value of the difference between the acquired temperatures; and when the maximum value of the difference value meets the preset temperature range, adjusting the rotating speed of a fan of the air conditioner and/or the angle of the air deflector so as to limit the air output of the indoor unit of the air conditioner in a corresponding range. The invention also discloses an air conditioner indoor unit. The invention can effectively prevent condensation only by adjusting the rotating speed of the fan and/or the angle of the air deflector according to the determined maximum value of the difference value to limit the air output of the indoor unit of the air conditioner within a corresponding range, thereby not only realizing the condensation prevention control of the variable-frequency and fixed-frequency air conditioner, but also realizing the condensation prevention control of the air outlet and the wind wheel.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner condensation prevention control method and an air conditioner indoor unit.
Background
When the air conditioner operates in a refrigerating mode, the air inlet surface of the indoor evaporator is a high-temperature area or an overheating area, the position close to the cross-flow wind wheel and the air outlet is a low-temperature area, air enters the air outlet surface of the low-temperature area from the air inlet surface of the high-temperature area, if local heat exchange of the evaporator is not uniform, the temperature difference between the front end and the rear end of the evaporator is too large, part of air with uneven cold and hot is crossed between the evaporator and the cross-flow wind wheel, condensation dew drops are formed on the cross-flow wind wheel, and the problem of water blowing is caused when the air conditioner operates. In addition, if the air outlet wind speed is too low, lead to blowing out the lower cold wind of temperature, when the temperature at air outlet border is less than the dew point temperature of air, will produce the condensation at air outlet department, the long-time accumulation of condensation will form a large amount of water drops and finally drip on air outlet or aviation baffle, seriously influences user's travelling comfort and security of using.
The existing condensation prevention method generally comprises the following two methods, one method is that condensation is prevented by acquiring the current humidity of an indoor environment, then corresponding to the current humidity to preset the highest frequency, and finally controlling a compressor of an air conditioner to operate at the highest frequency which is not higher than the preset highest frequency, but the method is only suitable for a variable frequency air conditioner, is not suitable for a fixed frequency air conditioner, and has a limited application range; the other method is to prevent the generation of condensation by adding an electric heating wire on a plastic part at the air outlet of the indoor unit of the air conditioner, but the plastic part is complicated to add the electric heating wire, and the method can only solve the condensation problem at the air outlet of the indoor unit but can not solve the condensation problem on the wind wheel of the indoor unit.
Disclosure of Invention
The invention mainly aims to provide an air conditioner anti-condensation control method and an air conditioner indoor unit, and aims to realize the anti-condensation control of a variable-frequency air conditioner and a fixed-frequency air conditioner at the same time and realize the anti-condensation control of an air outlet and a wind wheel at the same time.
The air conditioner anti-condensation control method provided by the invention comprises the following steps:
respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger;
determining the maximum value of the difference between the acquired temperatures;
and when the maximum value of the difference value meets the preset temperature range, adjusting the rotating speed of a fan of the air conditioner and/or the angle of the air deflector so as to limit the air output of the indoor unit of the air conditioner in a corresponding range.
Preferably, when the maximum difference value meets a preset temperature range, the step of adjusting the rotation speed of the fan of the air conditioner and/or the angle of the air deflector to limit the air output of the indoor unit of the air conditioner within a corresponding range includes:
and when the maximum value of the difference is greater than the first preset temperature, controlling the rotating speed of a fan of the air conditioner to be reduced, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to reduce the angle between the air deflector and the section of the air outlet.
Preferably, when the maximum difference value meets a preset temperature range, the step of adjusting the rotation speed of the fan of the air conditioner and/or the angle of the air deflector to limit the air output of the indoor unit of the air conditioner within a corresponding range includes:
and when the maximum value of the difference is smaller than the second preset temperature, controlling the rotating speed of a fan of the air conditioner to rise, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to increase the angle between the air deflector and the section of the air outlet.
Preferably, before the step of obtaining the temperatures of the plurality of preset regions of the indoor heat exchanger respectively, the air conditioner condensation prevention control method further includes:
acquiring the current indoor environment humidity;
and when the indoor environment humidity is greater than the preset humidity, executing the step of acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger.
Preferably, the indoor heat exchanger comprises a plurality of U-shaped tubes, and each U-shaped tube is one of the predetermined regions.
In addition, the indoor unit of the air conditioner provided by the invention comprises an indoor heat exchanger and a controller, and further comprises a plurality of temperature sensors which are respectively arranged in a plurality of preset areas of the indoor heat exchanger, wherein each temperature sensor is used for detecting the temperature of each preset area, and each temperature sensor is respectively connected with the controller;
the controller comprises an acquisition module, a determination module and a control module, wherein,
the acquisition module is used for respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger detected by the temperature sensors;
the determining module is used for determining the maximum value of the difference between the acquired temperatures;
and the control module is used for adjusting the rotating speed of a fan of the air conditioner and/or the angle of the air deflector when the maximum difference value meets a preset temperature range so as to limit the air output of the indoor unit of the air conditioner within a corresponding range.
Preferably, the control module is further configured to control the rotation speed of the fan of the air conditioner to decrease and/or control the air deflector of the air conditioner to rotate by a preset angle when the maximum difference value is greater than the first preset temperature, so as to decrease an angle between the air deflector and the cross section of the air outlet.
Preferably, the control module is further configured to control the rotation speed of the fan of the air conditioner to increase and/or control the air deflector of the air conditioner to rotate by a preset angle when the maximum difference value is smaller than the second preset temperature, so as to increase an angle between the air deflector and the cross section of the air outlet.
Preferably, the indoor unit of the air conditioner further comprises a humidity sensor for detecting the humidity of the indoor environment, and the humidity sensor is connected with the controller;
the acquisition module is also used for acquiring the indoor environment humidity currently detected by the humidity sensor;
the acquisition module is further used for respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger, which are detected by the temperature sensors, when the indoor environment humidity is greater than the preset humidity.
Preferably, the indoor heat exchanger further comprises a plurality of U-shaped pipes, and each U-shaped pipe is one of the preset areas.
According to the air conditioner anti-condensation control method and the air conditioner indoor unit, the temperatures of a plurality of preset areas of an indoor heat exchanger are respectively obtained, the maximum value of the difference value between the obtained temperatures is determined, and then when the maximum value of the difference value meets the preset temperature range, the rotating speed of a fan of an air conditioner and/or the angle of an air deflector are/is adjusted to limit the air output of the air conditioner indoor unit within the corresponding range, so that condensation can be effectively prevented only by adjusting the rotating speed of the fan and/or the angle of the air deflector according to the determined maximum value of the difference value to limit the air output of the air conditioner indoor unit within the corresponding range, and not only can the anti-condensation control of a variable-frequency air conditioner and a fixed-frequency air conditioner be realized at the same time, but also the anti-condensation control of an air outlet and a wind.
Drawings
FIG. 1 is a schematic flow chart illustrating a first embodiment of an anti-condensation control method for an air conditioner according to the present invention;
FIG. 2 is a schematic flow chart illustrating a fourth embodiment of an anti-condensation control method for an air conditioner according to the present invention;
FIG. 3 is a functional block diagram of an indoor unit of an air conditioner according to a first embodiment of the present invention;
fig. 4 is a functional block diagram of an air conditioning indoor unit according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides an air conditioner anti-condensation control method, and referring to fig. 1, fig. 1 is a schematic flow chart of a first embodiment of the air conditioner anti-condensation control method, and the air conditioner anti-condensation control method provided by the invention comprises the following steps:
step S10, respectively obtaining the temperatures of a plurality of preset areas of the indoor heat exchanger;
in this embodiment, the air-conditioning indoor unit may include an indoor heat exchanger, a controller, and a plurality of temperature sensors respectively disposed in a plurality of preset regions of the indoor heat exchanger, each of the temperature sensors is configured to detect each of temperatures in the preset regions, and each of the temperature sensors is connected to the controller. And respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger detected by the temperature sensors through the controller.
The number and size of the preset areas can be set according to actual needs. For example, the indoor heat exchanger may be divided into four, five or other number of zones, and each zone is provided with a corresponding temperature sensor. Optionally, in order to further improve the accuracy of monitoring the temperature of the indoor heat exchanger, the indoor heat exchanger includes a plurality of U-shaped pipes, and each U-shaped pipe is a preset area. Namely, one temperature sensor is arranged on each U-shaped pipe.
Alternatively, the temperatures of several preset zones of the indoor heat exchanger may be obtained in real time or at regular time.
Step S20, determining the maximum value of the difference between the acquired temperatures;
in the present embodiment, the maximum value of the difference between the respective temperatures is determined by the controller. For example, the difference between the obtained temperatures may be calculated separately, and then the maximum value may be selected from the calculated differences.
And step S30, when the maximum value of the difference value meets the preset temperature range, adjusting the rotating speed of a fan of the air conditioner and/or the angle of an air deflector so as to limit the air output of the indoor unit of the air conditioner within a corresponding range.
The preset temperature range can be set according to actual needs and can be a temperature interval.
It should be noted that when the maximum value of the difference does not satisfy the preset temperature range, no processing is performed.
In this embodiment, when the maximum difference value is too large, it indicates that the heat exchange capability of the indoor heat exchanger is too strong, and the temperature difference between the front end and the rear end of the indoor heat exchanger is too large, which may cause the uneven cold and hot air to intersect between the evaporator and the cross-flow wind wheel of the indoor unit of the air conditioner, and further cause the cross-flow wind wheel to condense into condensed dew drops. Therefore, the air output of the indoor unit of the air conditioner can be reduced by adjusting the rotating speed of the fan of the air conditioner and/or the angle of the air deflector, so that the heat exchange capacity of the indoor heat exchanger is reduced, and the condensation prevention effect is effectively achieved.
When the maximum value of the difference is too small, the heat exchange capacity of the indoor heat exchanger is insufficient, the temperature of air blown out by the fan is low, and condensation is easily generated at the air outlet. Therefore, the air output of the indoor unit of the air conditioner can be increased by adjusting the rotating speed of the fan of the air conditioner and/or the angle of the air deflector, so that the heat exchange capacity of the indoor heat exchanger is enhanced, and the condensation prevention effect is effectively achieved.
It should be noted that the corresponding range may be a preset range, that is, a fixed preset range. The air outlet quantity can also be in an unfixed range, for example, when the maximum value of the difference value is too large, the air outlet quantity is reduced on the basis of the current air outlet quantity; and when the maximum value of the difference is too small, increasing the air output on the basis of the current air output.
Optionally, after the step S30 is executed each time, timing is started, and when the timing duration reaches the preset duration, the above steps S10, S20 and S30 are executed again in sequence until the currently determined maximum value of the difference does not satisfy the preset temperature range.
The air conditioner condensation prevention control method provided by the invention does not need to limit the running frequency of the compressor to prevent condensation, so that the method is not only suitable for the variable frequency air conditioner, but also suitable for the fixed frequency air conditioner. In addition, because the invention only needs to detect the temperature of the indoor heat exchanger and adjust the rotating speed of the fan and/or the angle of the air deflector according to the maximum value of the determined difference value so as to limit the air output of the indoor unit of the air conditioner within a corresponding range, the condensation can be effectively prevented, and the condensation prevention control on the air outlet of the indoor unit of the air conditioner and the wind wheel can be realized at the same time.
The air conditioner condensation prevention control method provided by the invention has the advantages that the temperatures of a plurality of preset areas of the indoor heat exchanger are respectively obtained, the maximum value of the difference value between the obtained temperatures is determined, and then when the maximum value of the difference value meets the preset temperature range, the rotating speed of a fan of the air conditioner and/or the angle of an air deflector are/is adjusted to limit the air output of the indoor unit of the air conditioner in the corresponding range, so that the condensation can be effectively prevented only by adjusting the rotating speed of the fan and/or the angle of the air deflector according to the determined maximum value of the difference value to limit the air output of the indoor unit of the air conditioner in the corresponding range, and not only can the condensation prevention control of the variable-frequency air conditioner and the fixed-frequency air conditioner be realized at the same time, but also the condensation prevention control of the air.
Further, based on the first embodiment of the air conditioner condensation prevention control method of the present invention, the present invention further provides a second embodiment of the air conditioner condensation prevention control method, and step S30 includes: and when the maximum value of the difference is greater than the first preset temperature, controlling the rotating speed of a fan of the air conditioner to be reduced, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to reduce the angle between the air deflector and the section of the air outlet.
In this embodiment, the first preset temperature may be set according to actual needs, and is not limited herein.
When the rotating speed of the fan is controlled to be reduced, the preset speed value can be reduced every time.
The air outlet section is the cross section of the air outlet of the air-conditioning indoor unit. When the air deflector is vertical to the cross section of the air outlet, the resistance to wind is minimum, so that the air output is maximum; the smaller the included angle between the air deflector and the cross section of the air outlet is, the larger the resistance of the air deflector to wind is, and the smaller the air output is. And if the plane perpendicular to the cross section of the air outlet is taken as the vertical plane of the air outlet, the angle between the air deflector and the cross section of the air outlet can be reduced when the air deflector rotates along the direction that the free end of the air deflector deviates from the vertical plane of the air outlet. The preset angle may be a fixed value, for example, when the air deflector of the air conditioner is controlled to rotate, the angle between the air deflector and the cross section of the air outlet may be reduced by the preset angle value each time; alternatively, the preset angle may also be a variable value, and the angle of rotation may be different each time, for example, the size of the rotation angle of the air deflector may be determined according to the current maximum value of the difference. No matter how the air deflector rotates, the air outlet quantity of the indoor unit of the air conditioner can be limited within a corresponding range.
Optionally, after the rotation speed of the fan of the air conditioner is controlled to be reduced, and/or the air deflector of the air conditioner is controlled to rotate to a corresponding angle, timing is started, and when the timing duration reaches a preset duration, steps S10 and S20 are executed again, and when the maximum value of the difference is greater than the first preset temperature, the rotation speed of the fan of the air conditioner is controlled to be reduced, and/or the air deflector of the air conditioner is controlled to rotate by a preset angle, so as to reduce the angle between the air deflector and the cross section of the air outlet, until the maximum value of the difference is less than or equal to the first preset temperature.
In the embodiment, when the maximum value of the difference value is greater than the first preset temperature, the rotation speed of the fan of the air conditioner is controlled to be reduced or the air deflector is controlled to rotate so as to reduce the angle between the air deflector and the air outlet interface, so that condensation on a wind wheel of the indoor unit of the air conditioner is effectively prevented.
Further, based on the first or second embodiment of the air conditioner anti-condensation control method of the present invention, the present invention further provides a third embodiment of the air conditioner anti-condensation control method, and step S30 includes: and when the maximum value of the difference is smaller than the second preset temperature, controlling the rotating speed of a fan of the air conditioner to rise, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to increase the angle between the air deflector and the section of the air outlet.
In this embodiment, the second preset temperature may be set according to actual needs, and is not limited herein.
When the rotating speed of the fan is controlled to be increased, the preset speed value can be increased every time.
The air outlet section is the cross section of the air outlet of the air-conditioning indoor unit. When the air deflector is vertical to the cross section of the air outlet, the resistance to wind is minimum, so that the air output is maximum; the smaller the included angle between the air deflector and the cross section of the air outlet is, the larger the resistance of the air deflector to wind is, and the smaller the air output is. And if the plane perpendicular to the cross section of the air outlet is taken as the vertical plane of the air outlet, the angle between the air deflector and the cross section of the air outlet can be reduced when the air deflector rotates along the direction that the free end of the air deflector deviates from the vertical plane of the air outlet. In this embodiment, the preset angle may be a fixed value, for example, when the air deflector of the air conditioner is controlled to rotate, the angle between the air deflector and the cross section of the air outlet may be increased by the preset angle value each time; alternatively, the preset angle may also be a variable value, and the angle of rotation may be different each time, for example, the size of the rotation angle of the air deflector may be determined according to the current maximum value of the difference. No matter how the air deflector rotates, the air outlet quantity of the indoor unit of the air conditioner can be limited within a corresponding range.
Optionally, after the rotation speed of the fan of the air conditioner is controlled to increase, and/or the air deflector of the air conditioner is controlled to rotate to a corresponding angle, timing is started, and when the timing duration reaches a preset duration, steps S10 and S20 are executed again, and when the maximum value of the difference is smaller than a second preset temperature, the rotation speed of the fan of the air conditioner is controlled to increase, and/or the air deflector of the air conditioner is controlled to rotate by a preset angle, so as to increase the angle between the air deflector and the cross section of the air outlet, until the maximum value of the difference is greater than or equal to the second preset temperature.
In the embodiment, when the maximum value of the difference value is smaller than the second preset temperature, the rotation speed of the fan of the air conditioner is controlled to be increased or the air deflector is controlled to rotate so as to increase the angle between the air deflector and the air outlet interface, so that condensation at the air outlet of the indoor unit of the air conditioner is effectively prevented.
Further, based on any one of the first to third embodiments of the air conditioner condensation prevention control method according to the present invention, the present invention further provides a fourth embodiment of the air conditioner condensation prevention control method, referring to fig. 2, fig. 2 is a schematic flow diagram of the fourth embodiment of the air conditioner condensation prevention control method according to the present invention, before step S10, the air conditioner condensation prevention control method further includes:
step S40, acquiring the current indoor environment humidity;
and step S50, judging whether the indoor environment humidity is larger than the preset humidity.
When the indoor ambient humidity is greater than the preset humidity, the step S10 is executed. When the indoor ambient humidity is less than or equal to the preset humidity, the step S40 is continuously executed or the step S40 is continuously executed after a preset time interval.
The air-conditioning indoor unit further comprises a humidity sensor for detecting the humidity of the indoor environment, and the humidity sensor is connected with the controller.
In this embodiment, the controller may obtain the current indoor environment humidity in real time or at regular time.
The preset humidity may be set according to actual needs, and is not limited herein. Since condensation is not easily generated when the indoor environment humidity is too low, the condensation prevention function may not be performed at this time. In the present embodiment, when the indoor environment humidity is greater than the preset humidity, the condensation preventing function is entered, that is, the step S10 is started, so that the condensation preventing efficiency is effectively improved.
Optionally, since the air conditioner generally generates condensation only in the cooling or dehumidifying mode, in order to further improve the condensation preventing efficiency, before step S10 or step S40, the air conditioner may further determine whether the air conditioner is currently in the cooling or dehumidifying mode, and after the air conditioner is in the cooling or dehumidifying mode, step S10 or step S40 is performed.
Optionally, a condensation-preventing function key may be further provided, and when the user triggers the condensation-preventing function key, step S10 or step S40 is executed. Or when the user triggers the anti-condensation function key and the air conditioner is determined to be in the cooling or dehumidifying mode, executing the step S10 or the step S40.
The invention further provides an air conditioner indoor unit.
Referring to fig. 3, fig. 3 is a schematic functional module diagram of a first embodiment of an indoor unit of an air conditioner, the indoor unit of the air conditioner provided by the present invention includes an indoor heat exchanger 10, a controller 20, and a plurality of temperature sensors 30 respectively disposed in a plurality of preset regions of the indoor heat exchanger 10, each temperature sensor 30 is configured to detect a temperature of each preset region, and each temperature sensor 30 is connected to the controller;
the controller comprises an acquisition module 21, a determination module 22 and a control module 23, wherein,
the acquiring module 21 is configured to acquire temperatures of a plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 respectively;
in this embodiment, the number and size of the preset areas may be set according to actual needs. For example, the indoor heat exchanger 10 may be divided into four, five or another number of zones, and one temperature sensor 30 may be provided for each zone. Optionally, in order to further improve the accuracy of monitoring the temperature of the indoor heat exchanger 10, the indoor heat exchanger 10 includes a plurality of U-shaped pipes, and each U-shaped pipe is a preset area. Namely, one temperature sensor 30 is provided on each U-shaped tube.
Alternatively, the acquiring module 21 may acquire the temperatures of several preset areas of the indoor heat exchanger 10 in real time or at regular time.
The determining module 22 is configured to determine a maximum value of a difference between the acquired temperatures;
in the present embodiment, the maximum value of the difference between the respective temperatures is determined by the determination module 22. For example, the difference between the obtained temperatures may be calculated separately, and then the maximum value may be selected from the calculated differences.
The control module 23 is configured to adjust a rotation speed of a fan of the air conditioner and/or an angle of the air deflector when the maximum difference value meets a preset temperature range, so as to limit the air output of the indoor unit of the air conditioner within a corresponding range.
The preset temperature range can be set according to actual needs and can be a temperature interval.
It should be noted that when the maximum value of the difference does not satisfy the preset temperature range, no processing is performed.
In this embodiment, when the maximum difference value is too large, it indicates that the heat exchange capability of the indoor heat exchanger 10 is too strong, and the temperature difference between the front end and the rear end of the indoor heat exchanger 10 is too large, which may cause the uneven cold and hot air to intersect between the evaporator and the cross-flow wind wheel of the indoor unit of the air conditioner, and further cause the cross-flow wind wheel to condense into condensed dew drops. Therefore, the air output of the indoor unit of the air conditioner can be reduced by adjusting the rotating speed of the fan of the air conditioner and/or the angle of the air deflector, so that the heat exchange capacity of the indoor heat exchanger 10 is reduced, and the condensation prevention effect is effectively achieved.
When the maximum value of the difference is too small, it indicates that the heat exchange capability of the indoor heat exchanger 10 is insufficient, the temperature of the air blown out by the fan is low, and condensation is easily generated at the air outlet. Therefore, the air output of the indoor unit of the air conditioner can be increased by adjusting the rotating speed of the fan of the air conditioner and/or the angle of the air deflector, so that the heat exchange capacity of the indoor heat exchanger 10 is enhanced, and the condensation prevention effect is effectively achieved.
It should be noted that the corresponding range may be a preset range, that is, a fixed preset range. The air outlet quantity can also be in an unfixed range, for example, when the maximum value of the difference value is too large, the air outlet quantity is reduced on the basis of the current air outlet quantity; and when the maximum value of the difference is too small, increasing the air output on the basis of the current air output.
Optionally, after the control module 23 adjusts the fan speed and/or the angle of the air deflector of the air conditioner each time, timing is started, and when the timing duration reaches a preset duration, the obtaining module 21 obtains the temperatures of the preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 again, the determining module 22 determines the maximum value of the difference between the obtained temperatures again, and then the control module 23 adjusts the fan speed and/or the angle of the air deflector of the air conditioner again until the maximum value of the difference currently determined by the determining module 22 does not meet the preset temperature range.
The indoor unit of the air conditioner provided by the invention does not need to limit the operating frequency of the compressor for condensation prevention, so that the indoor unit of the air conditioner is not only suitable for a variable frequency air conditioner, but also suitable for a fixed frequency air conditioner. In addition, because the invention only needs to detect the temperature of the indoor heat exchanger 10 and adjust the rotating speed of the fan and/or the angle of the air deflector according to the maximum value of the determined difference value so as to limit the air output of the indoor unit of the air conditioner within a corresponding range, condensation can be effectively prevented, and the condensation prevention control on the air outlet of the indoor unit of the air conditioner and the wind wheel can be realized at the same time.
According to the air conditioner indoor unit provided by the invention, the temperatures of a plurality of preset areas of the indoor heat exchanger 10 are respectively obtained, the maximum value of the difference value between the obtained temperatures is determined, and then when the maximum value of the difference value meets the preset temperature range, the rotating speed of the fan of the air conditioner and/or the angle of the air deflector are/is adjusted to limit the air output of the air conditioner indoor unit within the corresponding range, so that condensation can be effectively prevented only by adjusting the rotating speed of the fan and/or the angle of the air deflector according to the determined maximum value of the difference value to limit the air output of the air conditioner indoor unit within the corresponding range, and not only can the condensation prevention control of a variable-frequency air conditioner and a fixed-frequency air conditioner be realized, but also the condensation prevention control of an air outlet and a wind wheel can be.
Further, based on the first embodiment of the indoor unit of an air conditioner of the present invention, the present invention further provides a second embodiment of the indoor unit of an air conditioner, and the control module 23 is further configured to control the rotation speed of the fan of the air conditioner to be reduced and/or control the air deflector of the air conditioner to rotate by a preset angle when the maximum value of the difference is greater than the first preset temperature, so as to reduce an angle between the air deflector and the cross section of the air outlet.
In this embodiment, the first preset temperature may be set according to actual needs, and is not limited herein.
When the rotating speed of the fan is controlled to be reduced, the preset speed value can be reduced every time.
The air outlet section is the cross section of the air outlet of the air-conditioning indoor unit. When the air deflector is vertical to the cross section of the air outlet, the resistance to wind is minimum, so that the air output is maximum; the smaller the included angle between the air deflector and the cross section of the air outlet is, the larger the resistance of the air deflector to wind is, and the smaller the air output is. And if the plane perpendicular to the cross section of the air outlet is taken as the vertical plane of the air outlet, the angle between the air deflector and the cross section of the air outlet can be reduced when the air deflector rotates along the direction that the free end of the air deflector deviates from the vertical plane of the air outlet. The preset angle may be a fixed value, for example, when the air deflector of the air conditioner is controlled to rotate, the angle between the air deflector and the cross section of the air outlet may be reduced by the preset angle value each time; alternatively, the preset angle may also be a variable value, and the angle of rotation may be different each time, for example, the size of the rotation angle of the air deflector may be determined according to the current maximum value of the difference. No matter how the air deflector rotates, the air outlet quantity of the indoor unit of the air conditioner can be limited within a corresponding range.
Optionally, after the control module 23 controls the fan of the air conditioner to rotate at a reduced speed and/or controls the air deflector of the air conditioner to rotate to a corresponding angle each time, timing is started, and when the timed duration reaches a preset duration, the obtaining module 21 obtains the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 again, the determining module 22 determines the maximum value of the difference between the obtained temperatures again, and finally, when the maximum value of the difference is greater than the first preset temperature, the control module 23 controls the fan of the air conditioner to rotate at a reduced speed and/or controls the air deflector of the air conditioner to rotate at a preset angle so as to reduce the angle between the air deflector and the cross section of the air outlet until the maximum value of the difference currently determined by the determining module 22 is less than or equal to the first preset temperature.
In the embodiment, when the maximum value of the difference value is greater than the first preset temperature, the rotation speed of the fan of the air conditioner is controlled to be reduced or the air deflector is controlled to rotate so as to reduce the angle between the air deflector and the air outlet interface, so that condensation on a wind wheel of the indoor unit of the air conditioner is effectively prevented.
Further, based on the first or second embodiment of the indoor unit of an air conditioner of the present invention, the present invention further provides a third embodiment of the indoor unit of an air conditioner, and the control module 23 is further configured to control the rotation speed of the fan of the air conditioner to increase and/or control the air deflector of the air conditioner to rotate by a preset angle when the maximum value of the difference is smaller than the second preset temperature, so as to increase an angle between the air deflector and the cross section of the air outlet.
In this embodiment, the second preset temperature may be set according to actual needs, and is not limited herein.
When the rotating speed of the fan is controlled to be increased, the preset speed value can be increased every time.
The air outlet section is the cross section of the air outlet of the air-conditioning indoor unit. When the air deflector is vertical to the cross section of the air outlet, the resistance to wind is minimum, so that the air output is maximum; the smaller the included angle between the air deflector and the cross section of the air outlet is, the larger the resistance of the air deflector to wind is, and the smaller the air output is. And if the plane perpendicular to the cross section of the air outlet is taken as the vertical plane of the air outlet, the angle between the air deflector and the cross section of the air outlet can be reduced when the air deflector rotates along the direction that the free end of the air deflector deviates from the vertical plane of the air outlet. In this embodiment, the preset angle may be a fixed value, for example, when the air deflector of the air conditioner is controlled to rotate, the angle between the air deflector and the cross section of the air outlet may be increased by the preset angle value each time; alternatively, the preset angle may also be a variable value, and the angle of rotation may be different each time, for example, the size of the rotation angle of the air deflector may be determined according to the current maximum value of the difference. No matter how the air deflector rotates, the air outlet quantity of the indoor unit of the air conditioner can be limited within a corresponding range.
Optionally, after the control module 23 controls the fan of the air conditioner to increase in rotation speed each time, and/or controls the air deflector of the air conditioner to rotate to a corresponding angle, timing is started, and when the timing duration reaches a preset duration, the obtaining module 21 obtains the temperatures of the preset regions of the indoor heat exchanger 10 detected by the temperature sensors 30 again, the determining module 22 determines the maximum value of the difference between the obtained temperatures again, and finally, when the maximum value of the difference is smaller than a second preset temperature, the control module 23 controls the fan of the air conditioner to increase in rotation speed, and/or controls the air deflector of the air conditioner to rotate by a preset angle, so as to increase the angle between the air deflector and the air outlet section until the maximum value of the difference currently determined by the determining module 22 is greater than or equal to the second preset temperature.
In the embodiment, when the maximum value of the difference value is smaller than the second preset temperature, the rotation speed of the fan of the air conditioner is controlled to be increased or the air deflector is controlled to rotate so as to increase the angle between the air deflector and the air outlet interface, so that condensation at the air outlet of the indoor unit of the air conditioner is effectively prevented.
Further, based on any one of the first to third embodiments of the indoor unit of an air conditioner of the present invention, the present invention further provides a fourth embodiment of the indoor unit of an air conditioner, referring to fig. 4, fig. 4 is a schematic diagram of functional modules of the fourth embodiment of the indoor unit of an air conditioner of the present invention, the indoor unit of an air conditioner further includes a humidity sensor 40 for detecting an indoor environment humidity, and the humidity sensor 40 is connected to the controller 20;
the acquiring module 10 is further configured to acquire the indoor environment humidity currently detected by the humidity sensor;
the obtaining module 10 is further configured to obtain the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 respectively when the indoor environment humidity is greater than a preset humidity.
In this embodiment, the acquiring module 10 may acquire the current indoor environment humidity in real time or at regular time.
The preset humidity may be set according to actual needs, and is not limited herein. Since condensation is not easily generated when the indoor environment humidity is too low, the condensation prevention function may not be performed at this time. In this embodiment, when the indoor environment humidity is greater than the preset humidity, the condensation prevention function is entered, that is, the obtaining module 21 starts to obtain the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30, respectively, so that the condensation prevention efficiency is effectively improved.
Optionally, since the air conditioner generally generates condensation in a cooling or dehumidifying mode, in order to further improve the condensation preventing efficiency, before the obtaining module 21 obtains the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 respectively or the obtaining module 10 obtains the indoor environment humidity currently detected by the humidity sensors, the controller 20 may further determine whether the air conditioner is currently in the cooling or dehumidifying mode, and when the air conditioner is in the cooling or dehumidifying mode, the obtaining module 21 obtains the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 respectively or obtains the indoor environment humidity currently detected by the humidity sensors again.
Optionally, a condensation-preventing function key may be further provided, and when the user triggers the condensation-preventing function key, the obtaining module 21 obtains the temperatures of the plurality of preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 respectively, or the obtaining module 10 obtains the indoor environment humidity currently detected by the humidity sensor. Or when the user triggers the anti-condensation function key and determines that the air conditioner is in the cooling or dehumidifying mode, the obtaining module 21 obtains the temperatures of the preset areas of the indoor heat exchanger 10 detected by the temperature sensors 30 or the indoor environment humidity currently detected by the humidity sensors is obtained by the obtaining module 10.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, 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, article, 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, article, or apparatus that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
In addition, the descriptions relating to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The air conditioner anti-condensation control method is characterized by comprising the following steps:
respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger;
determining the maximum value of the difference between the acquired temperatures;
when the maximum value of the difference value meets a preset temperature range, adjusting the rotating speed of a fan of the air conditioner and/or the angle of an air deflector so as to limit the air output of the indoor unit of the air conditioner within a corresponding range;
when the maximum value of the difference value is greater than a first preset temperature, controlling the rotating speed of a fan of the air conditioner to be reduced, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to reduce the angle between the air deflector and the section of the air outlet;
and when the maximum value of the difference is smaller than a second preset temperature, controlling the rotating speed of a fan of the air conditioner to rise, and/or controlling an air deflector of the air conditioner to rotate by a preset angle so as to increase the angle between the air deflector and the section of the air outlet.
2. The air conditioner anti-condensation control method as set forth in claim 1, wherein before the step of separately obtaining temperatures of a plurality of preset zones of the indoor heat exchanger, the air conditioner anti-condensation control method further comprises:
acquiring the current indoor environment humidity;
and when the indoor environment humidity is greater than the preset humidity, executing the step of acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger.
3. The method as claimed in claim 1, wherein the indoor heat exchanger includes a plurality of U-shaped tubes, each of the U-shaped tubes being a predetermined area.
4. An indoor unit of an air conditioner comprises an indoor heat exchanger and a controller, and is characterized by further comprising a plurality of temperature sensors which are respectively arranged in a plurality of preset areas of the indoor heat exchanger, wherein each temperature sensor is used for detecting the temperature of each preset area, and each temperature sensor is respectively connected with the controller;
the controller comprises an acquisition module, a determination module and a control module, wherein,
the acquisition module is used for respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger detected by the temperature sensors;
the determining module is used for determining the maximum value of the difference between the acquired temperatures;
the control module is used for adjusting the rotating speed of a fan of an air conditioner and/or the angle of an air deflector when the maximum value of the difference value meets a preset temperature range so as to limit the air output of the indoor unit of the air conditioner within a corresponding range;
the control module is further used for controlling the rotating speed of a fan of the air conditioner to be reduced and/or controlling an air deflector of the air conditioner to rotate by a preset angle when the maximum value of the difference value is larger than a first preset temperature so as to reduce the angle between the air deflector and the section of the air outlet;
the control module is further used for controlling the rotating speed of a fan of the air conditioner to rise and/or controlling an air deflector of the air conditioner to rotate by a preset angle when the maximum value of the difference value is smaller than a second preset temperature so as to increase the angle between the air deflector and the section of the air outlet.
5. The indoor unit of claim 4, further comprising a humidity sensor for detecting the humidity of the indoor environment, wherein the humidity sensor is connected to the controller;
the acquisition module is also used for acquiring the indoor environment humidity currently detected by the humidity sensor;
the acquisition module is further used for respectively acquiring the temperatures of a plurality of preset areas of the indoor heat exchanger, which are detected by the temperature sensors, when the indoor environment humidity is greater than the preset humidity.
6. An indoor unit for an air conditioner according to claim 4, wherein said indoor heat exchanger further includes a plurality of U-shaped pipes, each of said U-shaped pipes being one of said predetermined areas.
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