CN111854114A - Control method for automatic speed regulation of air conditioner fan - Google Patents
Control method for automatic speed regulation of air conditioner fan Download PDFInfo
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- CN111854114A CN111854114A CN202010713900.6A CN202010713900A CN111854114A CN 111854114 A CN111854114 A CN 111854114A CN 202010713900 A CN202010713900 A CN 202010713900A CN 111854114 A CN111854114 A CN 111854114A
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
- F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/02—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing
- F24F1/0373—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heating arrangements
- F24F1/0375—Self-contained room units for air-conditioning, i.e. with all apparatus for treatment installed in a common casing characterised by heating arrangements with additional radiant heat-discharging elements, e.g. electric heaters
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F13/02—Ducting arrangements
- F24F13/0236—Ducting arrangements with ducts including air distributors, e.g. air collecting boxes with at least three openings
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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
- F24F13/20—Casings or covers
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses a control method for automatic speed regulation of a fan of an air conditioner, which comprises the following steps: receiving an adjusting instruction containing a preset temperature; detecting the current environment temperature; comparing the difference value between the current environment temperature and the preset temperature; when the current environment temperature is higher than the preset temperature, calculating the total air quantity of the fan required for reaching the preset temperature according to the difference value between the current environment temperature and the preset temperature; and respectively determining the rotating speed of the upper fan and the rotating speed of the lower fan according to the total air volume of the fans, wherein the rotating speed of the upper fan is greater than or equal to that of the lower fan. According to the invention, the air quantities of the upper fan and the lower fan are respectively configured according to the total air quantity of the fan required for reaching the preset temperature, and the rotating speed of the upper fan is limited to be greater than or equal to that of the lower fan, so that the performance of the evaporator is fully utilized, and the body feeling comfort level of a user is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method for automatic speed regulation of a fan of an air conditioner.
Background
The existing cabinet air conditioner is generally provided with an upper air outlet and a lower air outlet for air supply, the upper air outlet and the lower air outlet correspond to an upper air duct and a lower air duct respectively, fans are arranged in the upper air duct and the lower air duct respectively, evaporators corresponding to the fans are arranged in the air ducts respectively, and the number of the fans is equal to that of the evaporators. The arrangement needs to correspondingly increase the electromagnetic valve for controlling the evaporator, and the structural complexity of the whole machine is increased. In addition, the two fans are not generally regulated in speed respectively. Under the refrigeration operating mode, the refrigerant volume between two evaporators is inhomogeneous, and the evaporator cold volume that the refrigerant volume is many is too much, unable make full use of, causes the wasting of resources, and the evaporator refrigerating capacity that the refrigerant volume is few is not enough, and the travelling comfort is poor is felt to the user body.
Thus, improvements in the prior art are needed.
Disclosure of Invention
The purpose of the invention is: the invention provides a control method for automatic speed regulation of fans of an air conditioner, which aims to solve the technical problem that in the prior art, a cabinet type air conditioner generally cannot respectively regulate the speed of two fans and match with an evaporator, so that the user comfort is poor.
In order to achieve the aim, the invention provides a control method for automatic speed regulation of a fan of an air conditioner, which is suitable for the air conditioner with two air outlets; the upper air outlet is arranged at the upper part of the air conditioner, the lower air outlet is arranged at the lower part of the air conditioner, the upper air outlet and the lower air outlet respectively correspond to an upper air duct and a lower air duct, and an upper fan and a lower fan are respectively arranged in the upper air duct and the lower air duct; the air conditioner is provided with an evaporator, the evaporator is arranged between the fan and the air outlet, and an indoor coil is arranged in the air conditioner;
the method comprises the following steps:
receiving an adjusting instruction containing a preset temperature;
detecting the current environment temperature;
comparing the difference value between the current environment temperature and the preset temperature;
when the current environment temperature is higher than the preset temperature, calculating the total air quantity of the fan required for reaching the preset temperature according to the difference value between the current environment temperature and the preset temperature;
and respectively determining the rotating speed of the upper fan and the rotating speed of the lower fan according to the total air volume of the fans, wherein the rotating speed of the upper fan is greater than or equal to the rotating speed of the lower fan.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the rotation speed of the upper fan is equal to the rotation speed of the lower fan.
In some embodiments of the present application, when the current ambient temperature with the difference of presetting the temperature is greater than the second difference in temperature and is less than or equal to the first difference in temperature, the rotational speed of last fan is greater than the rotational speed of fan down.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is less than or equal to the second temperature difference, the rotation speed of the upper fan is greater than the rotation speed of the lower fan.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is greater than the first temperature difference, the total amount of wind of the fan required by the preset temperature is 1500cm3H; when the difference value between the current environment temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the total air volume of the fan required by the preset temperature is 800cm3H; when the difference value between the current environment temperature and the preset temperature is less than or equal to a second temperature difference value, the current environment temperature is reachedThe total air volume of the fan required by the preset temperature is 300cm3/h。
In some embodiments of the present application, a difference between the first temperature difference and the second temperature difference is 2 ℃, and a value range of the first temperature difference is 4 ℃ to 6 ℃, and a value range of the second temperature difference is 2 ℃ to 4 ℃.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the rotation speed of the upper fan and the rotation speed of the lower fan are both set to be high.
In some embodiments of the present application, when a difference between the current ambient temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the method further includes detecting the temperature of the indoor coil before setting the rotational speed of the fan; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be high, and the rotating speed of the lower fan is set to be medium; and when the temperature of the indoor coil pipe is more than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is less than or equal to a second temperature difference, detecting the temperature of the indoor coil before setting the rotational speed of the fan; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear; when the temperature of the indoor coil pipe is greater than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be the lowest gear, and the rotating speed of the lower fan is set to be 0.
In some embodiments of the present application, the high-grade corresponding air volume of the rotation speed of the upper fan is 750cm3H, the corresponding air volume of the middle gear is 500cm3The low-grade corresponding air quantity is 200cm3The corresponding air volume of the lowest gear is 50cm3H; the high-grade corresponding air quantity of the rotating speed of the lower fan is 750cm3H, the corresponding air volume of the middle gear is 300cm3The low-grade corresponding air quantity is 100cm3The corresponding air volume of the lowest gear is 50cm3/h。
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a control method for automatic speed regulation of fans of an air conditioner, which is suitable for the air conditioner provided with two fans corresponding to an evaporator, the air quantities of an upper fan and a lower fan are respectively configured according to the total air quantity of the fans required for reaching a preset temperature, and the rotating speed of the upper fan is limited to be greater than or equal to that of the lower fan, so that the performance of the evaporator is fully utilized, and the body feeling comfort level of a user is improved. Meanwhile, according to the conditions of different refrigeration requirements, the air quantities of the upper fan and the lower fan are reasonably distributed, so that the performance of the evaporator is further fully utilized, and the temperature of the indoor coil is ensured to be in a proper range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a flow chart of a control method for automatic speed regulation of a fan of an air conditioner according to a preferred embodiment of the present invention;
fig. 2 is an exploded view of a preferred embodiment of an air conditioner according to the present invention;
fig. 3 is a schematic view of the upper internal structure of an air conditioner according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The control method for the automatic speed regulation of the fan of the air conditioner in the preferred embodiment of the invention is suitable for the air conditioner with two air outlets; the upper air outlet is arranged at the upper part of the air conditioner, the lower air outlet is arranged at the lower part of the air conditioner, the upper air outlet and the lower air outlet respectively correspond to an upper air duct and a lower air duct, and an upper fan and a lower fan are respectively arranged in the upper air duct and the lower air duct; the air conditioner is provided with an evaporator, the evaporator is arranged between the fan and the air outlet, and an indoor coil is arranged in the air conditioner.
Referring to fig. 1, fig. 1 is a flowchart of a preferred embodiment of a control method for automatically adjusting the speed of a fan of an air conditioner, the method including steps S1-S5:
and S1, receiving an adjusting instruction containing the preset temperature.
And S2, detecting the current environment temperature.
And S3, comparing the difference between the current environment temperature and the preset temperature.
And S4, when the current environment temperature is higher than the preset temperature, calculating the total air volume of the fan required for reaching the preset temperature according to the difference value between the current environment temperature and the preset temperature. And when the current environment temperature is higher than the preset temperature, the refrigerating working condition is realized.
And S5, respectively determining the rotating speed of the upper fan and the rotating speed of the lower fan according to the total air volume of the fans, wherein the rotating speed of the upper fan is greater than or equal to that of the lower fan. The total air volume of the fan is equal to the sum of the air volume of the upper fan and the air volume of the lower fan, so that the total air volume of the fan can be determined to be the air volume of the upper fan and the air volume of the lower fan. The air quantity of the fan has a definite relation with the rotating speed, so that the rotating speed of the fan can be determined by determining the air quantity of the fan.
Under the refrigeration operating mode, when setting up the rotational speed of last fan equals the rotational speed of fan down, the amount of wind of last fan and fan down is the same, and two fans share same evaporimeter, can make full use of the performance of evaporimeter.
The temperature difference between the refrigerant (i.e. the refrigerant) entering from the upper part of the evaporator and the outside is the largest at the upper part, the cold energy is the most sufficient, and the temperature difference is gradually reduced in the downward process, so that the cold energy which can be provided is reduced. When the rotating speed of the upper fan is set to be higher than that of the lower fan, the air quantity of the upper fan is higher than that of the lower fan, more cold air can be blown out from the upper portion, and due to the fact that the air quantity of the lower fan is properly reduced, the phenomenon that the excessive air quantity produced by the lower fan cannot be fully utilized by the evaporator to cause waste can be avoided, so that the rotating speed matching of the upper fan and the lower fan is reasonably set, and the performance of the evaporator can be fully utilized. Meanwhile, although the cold air blown out from the lower area is less than that of the upper area, the cold air in the upper area sinks due to inertia, so that the refrigerating speed of the lower area is not too low, the air volume is soft, and the body feeling comfort level of a user is effectively improved.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the rotation speed of the upper fan is equal to the rotation speed of the lower fan.
In some embodiments of the present application, the rotation speed of the upper fan and the rotation speed of the lower fan are both set to a high level.
In some embodiments of the present application, when the current ambient temperature with the difference of presetting the temperature is greater than the second difference in temperature and is less than or equal to the first difference in temperature, the rotational speed of last fan is greater than the rotational speed of fan down.
In some embodiments of the present application, when a difference between the current ambient temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the method further includes detecting the temperature of the indoor coil before setting the rotational speed of the fan; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be high, and the rotating speed of the lower fan is set to be medium; and when the temperature of the indoor coil pipe is more than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is less than or equal to the second temperature difference, the rotation speed of the upper fan is greater than the rotation speed of the lower fan.
In some embodiments of the present application, when the difference between the current ambient temperature and the preset temperature is less than or equal to a second temperature difference, detecting the temperature of the indoor coil before setting the rotational speed of the fan; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear; when the temperature of the indoor coil pipe is greater than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be the lowest gear, and the rotating speed of the lower fan is set to be 0.
Examples of the present applicationIn an embodiment, when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the total air volume of the fan required for reaching the preset temperature is 1500cm3H; when the difference value between the current environment temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the total air volume of the fan required by the preset temperature is 800cm3H; when the difference value between the current environment temperature and the preset temperature is smaller than or equal to a second temperature difference, the total air volume of the fan required for reaching the preset temperature is 300cm3H is used as the reference value. The total air volume value of the fan is an ideal value which can efficiently utilize the performance of the evaporator, but actually, because other conditions need to be considered, the sum of the air volumes of the upper fan and the lower fan can not always reach the ideal value, and the sum of the air volumes of the upper fan and the lower fan can reach the ideal value as far as possible under the premise of considering other conditions.
In the above embodiment, the difference between the first temperature difference and the second temperature difference is 2 ℃, the value range of the first temperature difference is 4 ℃ to 6 ℃, and the value range of the second temperature difference is 2 ℃ to 4 ℃. For example, when the first temperature difference is 5 ℃, the second temperature difference is 3 ℃; when the first temperature difference is 6 ℃, the second temperature difference is 4 ℃; when the first temperature difference is 4 ℃, the second temperature difference is 2 ℃.
In the above embodiment, the high-grade corresponding air volume of the rotation speed of the upper fan is 750cm3H, the corresponding air volume of the middle gear is 500cm3The low-grade corresponding air quantity is 200cm3The corresponding air volume of the lowest gear is 50cm3H; the high-grade corresponding air quantity of the rotating speed of the lower fan is 750cm3H, the corresponding air volume of the middle gear is 300cm3The low-grade corresponding air quantity is 100cm3The corresponding air volume of the lowest gear is 50cm3/h。
The first temperature difference is 5 ℃ and the second temperature difference is 3 ℃ as described in detail below.
When the difference between the current environment temperature and the preset temperature is more than 5 ℃, the indoor environment temperature is high, the refrigeration requirement of a user is strong, and the air conditioner is preferentially refrigerated more quickly to achieve the aimThe temperature set by the user. At the moment, the rotating speed of the upper fan is equal to that of the lower fan, so that the performance of the evaporator can be fully utilized, and quick refrigeration is facilitated. Furthermore, the air quantity of the upper fan and the lower fan is adjusted to be high, the larger the air quantity of the upper fan and the lower fan is, the higher the heat exchange efficiency of the evaporator is, and the faster the refrigeration speed is. But is limited by the heat exchange limit of the evaporator, and according to the calculated data, when the difference value between the current environment temperature and the preset temperature is more than 5 ℃, the ideal value of the total air volume of the fan required for reaching the preset temperature is 1500cm3H is used as the reference value. I.e. less than 1500cm3The air volume per hour is difficult to maximize the refrigeration efficiency, and is more than 1500cm3The air volume/h will be partially unusable, resulting in waste. Therefore, it is preferable that the high-level corresponding air volume of the rotation speed of the upper fan is 750cm3The corresponding air quantity of the high-grade rotating speed of the lower fan is set to 750cm3H is used as the reference value. The setting ensures that when the difference value between the current environment temperature and the preset temperature is more than 5 ℃, and the rapid refrigeration is needed, the rotating speed of the upper fan is equal to that of the lower fan, and the proper air quantity is manufactured in a matching manner, so that the performance of the evaporator can be fully exerted, and the purpose of rapid refrigeration is achieved.
When current ambient temperature with the difference of predetermineeing the temperature is greater than 3 ℃ and is less than or equal to 5 ℃, can understand that indoor ambient temperature is not high, and normal refrigeration can satisfy the user demand, still need consider user's body this moment and feel the travelling comfort, consequently sets up the rotational speed of last fan is greater than the rotational speed of fan down. The reason why the rotating speed of the upper fan is greater than the rotating speed of the lower fan can effectively improve the body feeling comfort of a user is explained above. Preferably, the rotating speed of the upper fan is high grade or medium grade, and the rotating speed of the lower fan is medium grade or low grade, so that the total air volume requirement can be met. Preferably, in order to better protect the indoor coil in the air conditioner, before the rotation speed of the fan is set, the temperature of the indoor coil is detected, and the rotation speed of the fan is appropriately set according to the detected temperature of the indoor coil. The temperature of the indoor coil is generally higher than 10 ℃ (lower than 10 ℃ belongs to fault conditions), the temperature range is generally between 10 ℃ and 25 ℃, and the temperature of the indoor coil needs to be prevented from being too low during refrigeration. Therefore, when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be high, the rotating speed of the lower fan is set to be medium, the sum of the air volume of the upper fan and the air volume of the lower fan is probably slightly larger than the total refrigerating air volume requirement, but the larger air volume is beneficial to avoiding that the indoor coil pipe is too low. When the temperature of the indoor coil pipe is more than or equal to 15 ℃ and less than or equal to 25 ℃, the indoor coil pipe belongs to a proper temperature range, the rotating speed of the upper fan is set to be a middle level, the rotating speed of the lower fan is set to be a low level, and at the moment, the sum of the air volume of the upper fan and the air volume of the lower fan is possibly less than the total air volume requirement of refrigeration, but the requirement of refrigeration is also met enough, and meanwhile, the temperature of the indoor coil pipe can be in the proper range.
When the difference between the current ambient temperature and the preset temperature is less than or equal to 3 ℃, the indoor ambient temperature is suitable, the refrigeration requirement of a user is slight, or only the current room temperature needs to be stably maintained, the body feeling comfort of the user needs to be considered at the moment, and therefore the rotating speed of the upper fan is set to be greater than that of the lower fan. The reason why the rotating speed of the upper fan is greater than the rotating speed of the lower fan can effectively improve the body feeling comfort of a user is explained above. Preferably, the rotating speed of the upper fan is a middle gear or a lowest gear, and the rotating speed of the lower fan is a low gear or 0, so that the total air volume requirement can be met. Preferably, before the rotation speed of the fan is set, the rotation speed of the fan is appropriately set according to the detected temperature of the indoor coil, in order to protect the indoor coil in the air conditioner better. When the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be a middle gear, the rotating speed of the lower fan is set to be a low gear, the sum of the air volume of the upper fan and the air volume of the lower fan is probably slightly larger than the total refrigerating air volume requirement, but the larger air volume is beneficial to avoiding that the indoor coil pipe is too low. When the temperature of the indoor coil pipe is more than or equal to 15 ℃ and less than or equal to 25 ℃, the indoor coil pipe belongs to a proper temperature range, the rotating speed of the upper fan is set to be the lowest gear, the rotating speed of the lower fan is set to be 0, and only the evaporator in the upper area is utilized. The rotating speed of the upper fan is not zero, and the upper fan is mainly used for maintaining the lowest air quantity which does not generate supercooling and overheating so as to maintain the indoor temperature and ensure the body feeling comfort of a user.
In summary, the invention provides a control method for automatic speed regulation of fans of an air conditioner, which is suitable for an air conditioner provided with two fans corresponding to one evaporator, the air quantities of an upper fan and a lower fan are respectively configured according to the total air quantity of the fans required for reaching a preset temperature, and the rotating speed of the upper fan is limited to be greater than or equal to that of the lower fan, so that the performance of the evaporator is fully utilized, and the body feeling comfort level of a user is improved. Meanwhile, according to the conditions of different refrigeration requirements, the air quantities of the upper fan and the lower fan are reasonably distributed, so that the performance of the evaporator is further fully utilized, and the temperature of the indoor coil is ensured to be in a proper range.
The invention also provides a biaxial flow cabinet air conditioner suitable for the control method of the automatic speed regulation of the air conditioner fan, which is shown in the figure 2 and the figure 3.
The dual axial flow cabinet air conditioner includes:
1. a motor end cover; 2. an axial flow fan; 3. a motor; 4. a fan wind guide ring; 5. a back plate; 6. a substrate; 7. a front bulkhead; 8. an evaporator; 9. an electrical heating assembly; 10. a rear bulkhead; 11. a front plate.
The base body 6, i.e. the housing, serves as an overall support to which the front plate 11, the rear plate 5, the motor thermal assembly 9, the evaporator 8 and the like are fixed.
The front plate 11 is provided with an air outlet on the front plate 11.
Preceding baffle 7 and back baffle 11, preceding baffle 7 are located between evaporimeter 8 and the back plate 5, and back baffle 10 is located between evaporimeter 8 and the front plate 11, and preceding baffle 7 constitutes the baffle with back baffle 10, and the baffle is used for cutting apart into air outlet and air outlet down, and the air outlet setting is in on the upper portion of air conditioner, lower air outlet setting is in the lower part of air conditioner, last air outlet correspond last wind channel, and lower air outlet corresponds lower wind channel, and the baffle realizes going up the isolation in wind channel and lower wind channel, makes the air outlet correspond with the wind channel, sets up electrical heating hole on the preceding baffle 7 optionally for upper and lower electrical heating UNICOM.
The evaporator 8 is arranged between the axial flow fan 2 and the air outlet, and can realize the refrigeration effect by utilizing the latent heat of the evaporation of the refrigerant and carrying out heat exchange on a material to be cooled, so that the maximization of the heat dissipation surface area is realized in a limited space, and the evaporator 8 adopts a U-shaped design to increase the heat exchange area.
The number of the electric heating components 10 is one or two, and one electric heating component 10 can be one and run through the upper and lower parts, or one electric heating component can be arranged on the upper air duct, and one electric heating component can be arranged on the lower air duct.
The axial flow fan 2 may use two or more axial flow fans 2 to embody the characteristics of the temperature division regions. That is, the upper air duct may only have one axial flow fan 2 arranged in the middle, or the left air duct and the right air duct may have one axial flow fan 2 respectively, and the description is given by taking the example that one axial flow fan 2 is arranged in the upper air duct in this embodiment. The lower air outlet at the lower part of the air conditioner is a lower air duct, and in the embodiment, an axial flow fan 2 is arranged in the lower air duct as an example.
And the motor end cover 1 is used for fixing the motor 3 on a fixing structure of the fan air guide ring 4, and the axial flow fan 2 is fixed on a motor shaft.
And a rear plate 13 fixed to the base 9.
In the embodiment of the invention, the description that the upper air outlet is arranged at the upper part of the air conditioner and the lower air outlet is arranged at the lower part of the air conditioner is only one relative direction. In fact, the upper air outlet is disposed at the lower portion of the air conditioner, and the lower air outlet is disposed at the upper portion of the air conditioner.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A control method for automatic speed regulation of a fan of an air conditioner is characterized in that the method is suitable for the air conditioner with two air outlets; the upper air outlet is arranged at the upper part of the air conditioner, the lower air outlet is arranged at the lower part of the air conditioner, the upper air outlet and the lower air outlet respectively correspond to an upper air duct and a lower air duct, and an upper fan and a lower fan are respectively arranged in the upper air duct and the lower air duct; the air conditioner is provided with an evaporator, the evaporator is arranged between the fan and the air outlet, and an indoor coil is arranged in the air conditioner;
the method comprises the following steps:
receiving an adjusting instruction containing a preset temperature;
detecting the current environment temperature;
comparing the difference value between the current environment temperature and the preset temperature;
when the current environment temperature is higher than the preset temperature, calculating the total air quantity of the fan required for reaching the preset temperature according to the difference value between the current environment temperature and the preset temperature;
and respectively determining the rotating speed of the upper fan and the rotating speed of the lower fan according to the total air volume of the fans, wherein the rotating speed of the upper fan is greater than or equal to the rotating speed of the lower fan.
2. The method as claimed in claim 1, wherein when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the rotation speed of the upper fan is equal to the rotation speed of the lower fan.
3. The method as claimed in claim 1, wherein when the difference between the current ambient temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the rotation speed of the upper fan is greater than that of the lower fan.
4. The method as claimed in claim 1, wherein when the difference between the current ambient temperature and the preset temperature is less than or equal to a second temperature difference, the rotation speed of the upper fan is greater than that of the lower fan.
5. The method of claim 1, wherein when said current time is less than a predetermined time, said method further comprises the step of controlling an air conditioner fan to automatically adjust speedWhen the difference value between the front environment temperature and the preset temperature is greater than a first temperature difference, the total air quantity of the fan required by the preset temperature is 1500cm3H; when the difference value between the current environment temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the total air volume of the fan required by the preset temperature is 800cm3H; when the difference value between the current environment temperature and the preset temperature is smaller than or equal to a second temperature difference, the total air volume of the fan required for reaching the preset temperature is 300cm3/h。
6. The method for controlling the automatic speed regulation of the fan of the air conditioner according to any one of claims 2 to 5, wherein the difference value between the first temperature difference and the second temperature difference is 2 ℃, the value range of the first temperature difference is 4 ℃ to 6 ℃, and the value range of the second temperature difference is 2 ℃ to 4 ℃.
7. The method as claimed in claim 2, wherein when the difference between the current ambient temperature and the preset temperature is greater than a first temperature difference, the rotation speed of the upper fan and the rotation speed of the lower fan are both set to high.
8. The method of claim 3, wherein when the difference between the current ambient temperature and the preset temperature is greater than a second temperature difference and less than or equal to a first temperature difference, the method further comprises detecting the temperature of the indoor coil before setting the fan speed; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be high, and the rotating speed of the lower fan is set to be medium; and when the temperature of the indoor coil pipe is more than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear.
9. The method of claim 4, wherein when the difference between the current ambient temperature and the preset temperature is less than or equal to a second temperature difference, the method further comprises detecting the temperature of the indoor coil before setting the fan speed; when the temperature of the indoor coil pipe is more than 10 ℃ and less than 15 ℃, the rotating speed of the upper fan is set to be a middle gear, and the rotating speed of the lower fan is set to be a low gear; when the temperature of the indoor coil pipe is greater than or equal to 15 ℃ and less than or equal to 25 ℃, the rotating speed of the upper fan is set to be the lowest gear, and the rotating speed of the lower fan is set to be 0.
10. The control method for automatic speed regulation of air conditioner fan according to any one of claims 7-9, characterized in that the high-grade corresponding air volume of the rotation speed of the upper fan is 750cm3H, the corresponding air volume of the middle gear is 500cm3The low-grade corresponding air quantity is 200cm3The corresponding air volume of the lowest gear is 50cm3H; the high-grade corresponding air quantity of the rotating speed of the lower fan is 750cm3H, the corresponding air volume of the middle gear is 300cm3The low-grade corresponding air quantity is 100cm3The corresponding air volume of the lowest gear is 50cm3/h。
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| CN112413726A (en) * | 2020-11-13 | 2021-02-26 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN112524767A (en) * | 2020-12-07 | 2021-03-19 | 佛山市顺德区美的电子科技有限公司 | Air conditioner control method, air conditioner control device, air conditioner and storage medium |
| CN113587384A (en) * | 2021-07-12 | 2021-11-02 | Tcl空调器(中山)有限公司 | Control method and device of air conditioner, air conditioner and storage medium |
| CN115031381A (en) * | 2022-07-05 | 2022-09-09 | 珠海格力电器股份有限公司 | Control method of air conditioner with upper air outlet and lower air outlet |
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Application publication date: 20201030 |