CN115095960A - Fixed-frequency air conditioner control method and device and fixed-frequency air conditioner - Google Patents
Fixed-frequency air conditioner control method and device and fixed-frequency air conditioner Download PDFInfo
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- CN115095960A CN115095960A CN202210539381.5A CN202210539381A CN115095960A CN 115095960 A CN115095960 A CN 115095960A CN 202210539381 A CN202210539381 A CN 202210539381A CN 115095960 A CN115095960 A CN 115095960A
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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
- 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
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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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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Abstract
The invention relates to a control method and a device of a fixed-frequency air conditioner and the fixed-frequency air conditioner, wherein when the indoor environment temperature is less than a first temperature threshold and the coil temperature of an indoor heat exchanger is less than a second temperature threshold, the rotating speed of a fan of the fixed-frequency air conditioner is dynamically adjusted according to the temperature interval where the coil temperature of the indoor heat exchanger is located so as to ensure that the air supply temperature of an air outlet of the fixed-frequency air conditioner meets the requirements of a user, and when the indoor environment temperature is greater than or equal to the first temperature threshold and the coil temperature of the indoor heat exchanger is less than the second temperature threshold, the fan is controlled to run at a high speed at a second rotating speed, so that the indoor environment temperature adjusting efficiency is improved.
Description
Technical Field
The invention relates to an air conditioner, in particular to a fixed-frequency air conditioner control method and device and a fixed-frequency air conditioner.
Background
The fixed-frequency air conditioner is an air conditioner adopting a compressor with fixed frequency, the fixed-frequency air conditioner controls the compressor to stop when the indoor temperature reaches the set temperature, the compressor is controlled to start and operate again when the indoor temperature exceeds the set temperature, the compressor is frequently started and stopped in the operation process of the fixed-frequency air conditioner, the indoor temperature fluctuation is large, and the user experience is poor.
Disclosure of Invention
The embodiment of the application provides a fixed-frequency air conditioner control method and device and a fixed-frequency air conditioner, which can improve the heat exchange effect of the fixed-frequency air conditioner and improve the indoor environment comfort level and user experience.
In a first aspect, an embodiment of the present application provides a method for controlling a fixed-frequency air conditioner, where a fan of the fixed-frequency air conditioner operates at a first rotation speed, and the method includes the following steps:
acquiring the indoor environment temperature and the coil temperature of an indoor heat exchanger;
if the indoor environment temperature is smaller than a first temperature threshold value and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold value, adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located;
if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value, controlling the fan to operate at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed.
In a second aspect, an embodiment of the present application provides a control apparatus for a fixed-frequency air conditioner, in which a fan of the fixed-frequency air conditioner operates at a first rotation speed, the apparatus including:
the temperature acquisition module is used for acquiring the indoor environment temperature and the coil temperature of the indoor heat exchanger;
the first operation module is used for adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located if the indoor environment temperature is smaller than a first temperature threshold and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold;
the second operation module is used for controlling the fan to operate at a second rotating speed if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value; wherein the second rotational speed is greater than the first rotational speed.
In the embodiment of the application, when the indoor environment temperature is smaller than a first temperature threshold and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold, the rotating speed of the fan of the fixed-frequency air conditioner is dynamically adjusted according to the temperature interval where the coil temperature of the indoor heat exchanger is located, so that the air supply temperature of the air outlet of the fixed-frequency air conditioner meets the requirements of a user, when the indoor environment temperature is larger than or equal to the first temperature threshold and the coil temperature of the indoor heat exchanger is smaller than the second temperature threshold, the fan is controlled to run at a high speed at a second rotating speed, the indoor environment temperature adjusting efficiency is improved, in addition, the fan is gradually adjusted to a higher second rotating speed or other rotating speeds from the lower first rotating speed, the noise generated in the fan rotating speed adjusting process can be effectively reduced, and the user experience is improved.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a flow chart of a method for controlling a fixed-frequency air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of temperature intervals of coil temperatures of an indoor heat exchanger according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for controlling a constant frequency air conditioner according to another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a control device of a fixed-frequency air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a fixed-frequency air conditioner according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some of the embodiments of the present application, and not all of them. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, belong to the scope of protection of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the claims that follow. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The technical scheme disclosed by the embodiment of the application can be applied to the constant frequency air conditioner in a refrigeration mode and used for realizing comfortable refrigeration of the constant frequency air conditioner. The indoor unit of the fixed-frequency air conditioner comprises a fan and an indoor heat exchanger, the fan is used for sending indoor air to the indoor heat exchanger for heat exchange, and the air after heat exchange is sent into the room through an air outlet of the indoor unit, so that the indoor environment temperature is adjusted.
The fixed-frequency air conditioner is an air conditioner with a fixed compressor frequency, the fixed-frequency air conditioner controls the compressor to stop when the indoor temperature reaches the set temperature, the compressor is controlled to start and operate again when the indoor temperature exceeds the set temperature, the compressor is frequently started and stopped in the operation process of the fixed-frequency air conditioner, the indoor temperature fluctuation and the environmental noise are large, and the user experience is poor.
Therefore, referring to fig. 1, the present invention provides a method for controlling a fixed-frequency air conditioner, which can be applied to the fixed-frequency air conditioner in an operating state, specifically, a fan of the fixed-frequency air conditioner is operated at a first rotation speed, and the method includes the following steps:
s101: acquiring the indoor environment temperature and the coil temperature of an indoor heat exchanger;
s102: if the indoor environment temperature is smaller than a first temperature threshold value and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold value, adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located;
s103: if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value, controlling the fan to operate at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed. The first rotation speed is a lower rotation speed value which can be preset for a user, and the fan runs at a low speed at the first rotation speed. The first rotation speed can be specifically set according to the type and the operation condition of the fixed-frequency air conditioner.
In step S101, the indoor ambient temperature may be measured by a temperature detection device, such as a temperature sensor, disposed indoors, and the coil temperature of the indoor heat exchanger may be measured by a temperature detection device, such as a temperature sensor, disposed at the coil of the indoor heat exchanger.
The indoor environment temperature and the coil temperature of the indoor heat exchanger can be sampled when the fixed-frequency air conditioner receives the opening instruction, or can be sampled after the fixed-frequency air conditioner normally operates for a period of time, or in a preferred embodiment, the indoor environment temperature and the coil temperature of the indoor heat exchanger can be obtained regularly according to preset sampling time, and the rotating speed of the fan is adjusted in time according to the control method of the fixed-frequency air conditioner, so that the indoor environment temperature adjusting efficiency and the user comfort level experience are improved.
In step S102, when the indoor environment temperature is less than the first temperature threshold, that is, the current indoor environment temperature is low, at this time, if the fan still keeps operating at a high speed, the temperature of the gas sent out from the outlet of the fixed-frequency air conditioner may be high, which affects the adjustment of the indoor environment temperature.
Therefore, in the embodiment of the present application, when the indoor ambient temperature and the coil temperature of the indoor heat exchanger are low, the rotation speed of the fan is further adjusted in combination with the coil temperature of the indoor heat exchanger, specifically, the rotation speed of the fan may be decreased as the coil temperature of the indoor heat exchanger increases, so as to avoid that the adjustment of the indoor ambient temperature is affected by the high temperature of the air sent out from the blowout port of the fixed frequency air conditioner.
It should be noted that, adjusting the rotation speed of the fan described in the present application may refer to adjusting the rotation speed of a motor for driving the fan to rotate. Adjusting the speed of the fan may be increasing the speed, decreasing the speed, or maintaining the speed of the fan constant. In one embodiment, the fan speed may be adjusted within a preset speed adjustment range [ v1, v2], where v1 is the highest speed threshold and v2 is the lowest speed threshold.
In step S103, when the indoor ambient temperature is high, if the fan keeps running at a low speed all the time, the indoor cooling speed is affected, and therefore, when the indoor ambient temperature is high and the coil temperature of the indoor heat exchanger is low, the fan can run at a high speed at a second high speed by increasing the rotational speed of the fan, so as to accelerate the indoor air circulation, achieve rapid cooling of the indoor environment, and improve the cooling efficiency and user experience.
The second rotation speed may be a higher rotation speed value preset by a user, and the fan operates at a high speed at the second rotation speed. The second rotating speed can be specifically set according to the type and the operation condition of the fixed-frequency air conditioner.
In the embodiment of the present application, the fan is controlled to operate at the second rotation speed at a high speed to accelerate the indoor air circulation and achieve rapid cooling of the indoor environment, and specifically, the second rotation speed may be greater than the maximum rotation speed threshold v1 of the rotation speed adjustment range in step S102.
This application makes the fan at first rotational speed low-speed operation earlier, comes the rotational speed of adjusting the fan gradually according to indoor ambient temperature and indoor heat exchanger's coil pipe temperature again, and at this in-process, the fan can be by lower first rotational speed transition to higher second rotational speed or other rotational speeds gradually to avoid fan rotational speed sudden change noise generation, reduce the noise of fixed frequency air conditioner operation in-process, improve user experience.
In the embodiment of the application, when the indoor environment temperature is less than the first temperature threshold and the coil temperature of the indoor heat exchanger is less than the second temperature threshold, the rotating speed of the fan of the fixed-frequency air conditioner is dynamically adjusted according to the temperature interval where the coil temperature of the indoor heat exchanger is located, so as to ensure that the air supply temperature of the air outlet of the fixed-frequency air conditioner meets the user requirement, when the indoor environment temperature is greater than or equal to the first temperature threshold and the coil temperature of the indoor heat exchanger is less than the second temperature threshold, the fan is controlled to operate at a high speed at the second rotating speed, so that the indoor environment temperature adjusting efficiency is improved, in the application, the fan is gradually adjusted to the higher second rotating speed or other rotating speeds from the lower first rotating speed, the noise generated in the fan rotating speed adjusting process can be effectively reduced, and the user experience is improved.
In one embodiment, the step of adjusting the rotation speed of the fan according to the temperature interval in which the temperature of the coil of the indoor heat exchanger is located specifically includes:
if the temperature of the coil pipe of the indoor heat exchanger is in a first temperature interval, increasing the rotating speed of a fan of the fixed-frequency air conditioner according to a preset speed increasing value;
if the temperature of the coil pipe of the indoor heat exchanger is in a second temperature interval, maintaining the rotating speed of the fan;
if the temperature of the coil pipe of the indoor heat exchanger is in a third temperature interval, reducing the rotating speed of the fan according to a preset speed reduction value;
wherein the first temperature interval is less than the second temperature interval and less than the third temperature interval.
The first temperature interval, the second temperature interval and the third temperature interval can be divided by setting corresponding temperature thresholds according to the actual operation condition of the fixed-frequency air conditioner, for example, the temperature thresholds t1 and t2 can be set, when the coil temperature is less than t1, the coil temperature of the indoor heat exchanger is determined to be in the first temperature interval, when the coil temperature is not less than t1 and not more than t2, the coil temperature of the indoor heat exchanger is determined to be in the second temperature interval, and when the coil temperature is more than t2, the coil temperature of the indoor heat exchanger is determined to be in the third temperature interval.
When indoor heat exchanger's coil pipe temperature was crossed low, indoor heat exchanger appeared icing easily, influenced the heat exchange of air, consequently, in this application embodiment, when indoor heat exchanger's coil pipe temperature was in first temperature interval, increased the wind speed rotational speed according to predetermined speed increment value gradually for air heat exchange process improves the coil pipe temperature and freezes in order to avoid indoor heat exchanger.
Therefore, in the embodiment of the present application, the coil temperature of the indoor heat exchanger is in the third temperature range, and the rotation speed of the fan is gradually reduced according to a preset speed reduction value to ensure that the temperature of the air sent out from the outlet of the fixed-frequency air conditioner is sufficiently low.
When the temperature of the coil of the indoor heat exchanger is in the second temperature range, the rotating speed of the fan is kept unchanged, the temperature of the air sent out from the air outlet of the fixed-frequency air conditioner is in a proper range, and the phenomenon that the temperature of the coil of the indoor heat exchanger is too low and icing occurs can be avoided.
The speed increment is used for determining the increment of the fan speed in unit time, and the speed increment can be a fixed value, and the fan speed is gradually increased according to the fixed increment as the operation time increases.
The speed reduction value is used to determine the reduction value of the fan speed in unit time, and the speed reduction value can be a fixed value, and the fan speed is gradually reduced according to a fixed increase value along with the increase of the operation time.
When the rotating speed of the fan is increased or decreased, the rotating speed of the fan can be automatically adjusted within a preset rotating speed adjusting range [ v1, v2 ]. Wherein v1 is the highest rotation speed threshold, v2 is the lowest rotation speed threshold, when the fan rotation speed increases to the highest rotation speed threshold v1, the fan rotation speed is made to operate at the rotation speed of the highest rotation speed threshold v1, and when the fan rotation speed increases to the lowest rotation speed threshold v2, the fan rotation speed is made to operate at the lowest rotation speed threshold v 2.
In the embodiment of the application, when the indoor environment temperature is lower than the first temperature threshold, the rotating speed of the fan of the fixed-frequency air conditioner is dynamically adjusted according to the temperature interval where the coil pipe temperature of the indoor heat exchanger is located, the icing phenomenon of the indoor heat exchanger can be effectively avoided while the temperature of the gas sent out by the blowout port of the fixed-frequency air conditioner is ensured to be appropriate, the heat exchange effect of the fixed-frequency air conditioner and the operational reliability of the fixed-frequency air conditioner are ensured, the situation that the operational stability of the fixed-frequency air conditioner is influenced due to the frequent start and stop of the compressor of the fixed-frequency air conditioner is avoided, the noise generated during the operation of the fixed-frequency air conditioner is reduced, and the user experience is improved.
In one embodiment, the first temperature interval, the second temperature interval, and the third temperature interval may be determined according to the temperature threshold and the temperature variation trend, for example, the temperature interval in which the temperature of the coil is located is determined according to the rising trend or the falling trend of the temperature of the coil and the magnitude relationship between the temperature threshold and the temperature threshold, and then the rotation speed of the fan is adjusted according to the corresponding temperature interval.
Fig. 2 is a schematic diagram of temperature intervals of coil temperatures of an indoor heat exchanger in one embodiment. As shown in fig. 2, in this embodiment, the temperature thresholds T1, T2, T3 and T4 are divided into a first temperature interval i, a second temperature interval ii and a third temperature interval iii by combining the temperature variation tendencies of the coil temperatures. Wherein T1 < T2 < T3 < T4.
As shown in fig. 3, the step of adjusting the rotation speed of the fan according to the temperature interval where the temperature of the coil of the indoor heat exchanger is located specifically includes:
s201: acquiring the temperature change trend of the temperature of the coil;
s202: if the temperature change trend of the coil temperature is in a descending trend and the coil temperature is greater than T3, determining that the coil temperature of the indoor heat exchanger is in a third temperature interval III;
s203: if the temperature change trend of the coil pipe temperature is in a descending trend, and the temperature of the coil pipe is more than or equal to T1 and less than or equal to T3, determining that the temperature of the coil pipe of the indoor heat exchanger is in a second temperature interval II;
s204: if the temperature change trend of the coil temperature is in a descending trend and the coil temperature is less than T1, determining that the coil temperature of the indoor heat exchanger is in a first temperature interval I;
s205: if the temperature change trend of the coil temperature is in an ascending trend and the coil temperature is greater than T4, determining that the coil temperature of the indoor heat exchanger is in a third temperature interval III;
s206: if the temperature change trend of the coil pipe temperature is in an ascending trend, and the temperature of the coil pipe is more than or equal to T2 and less than or equal to T4, determining that the temperature of the coil pipe of the indoor heat exchanger is in a second temperature interval II;
s207: and if the temperature variation trend of the coil temperature is in an ascending trend and the coil temperature is less than T2, determining that the coil temperature of the indoor heat exchanger is in a first temperature interval I.
The temperature change trend of the coil temperature can be determined by periodically acquiring the coil temperature by using temperature detection equipment arranged on the surface of the coil, and the temperature change trend of the coil temperature is determined according to the change conditions of the coil temperature at different moments. Specifically, the variation Δ t of the coil temperature within N seconds can be recorded, and when Δ t is greater than 0, it is determined that the temperature variation trend of the coil temperature is an increasing trend, and when Δ t is less than or equal to 0, it is determined that the temperature variation trend of the coil temperature is a decreasing trend.
In the embodiment of the application, the temperature range where the coil temperature of the indoor heat exchanger is located is determined by combining the temperature trend of the coil temperature and the size relation between the coil temperature and each temperature threshold, so that the rotating speed of the fan is determined according to the temperature range where the coil temperature of the indoor heat exchanger is located, the indoor environment temperature is adjusted by controlling the fixed-frequency air conditioner more accurately, and the temperature adjusting efficiency and the user experience of the fixed-frequency air conditioner are improved.
However, in an overload environment (for example, a high-temperature environment of 43 ℃ or higher), when the fixed-frequency air conditioner is just started up, the temperature of a blow-out port is high, which easily causes the high temperature of the blown air, and affects the adjustment of the indoor environment temperature. Therefore, in one embodiment, before obtaining the indoor ambient temperature and the coil temperature of the indoor heat exchanger, the following steps are further included:
and responding to a starting instruction of the fixed-frequency air conditioner, starting a compressor of the fixed-frequency air conditioner, delaying the first time, starting the fan and controlling the fan to rotate at a first rotating speed.
After receiving a starting instruction of the fixed-frequency air conditioner, firstly, a compressor of the fixed-frequency air conditioner is started to operate, so that heat exchange is started inside the fixed-frequency air conditioner, a fan is started to supply air at a low speed after the first time is delayed, air is enabled to generate sufficient heat exchange inside the fixed-frequency air conditioner, the air sent out by the fixed-frequency air conditioner can be kept at a lower temperature, and the indoor environment temperature adjusting efficiency is improved.
Because the fixed-frequency air conditioner can not adjust the frequency of the compressor according to the ambient temperature, the heat exchange efficiency is lower in an extreme environment, moisture possibly remains on the indoor heat exchanger and the water receiving disc after the fixed-frequency air conditioner is shut down, obvious peculiar smell easily appears in the wind blown out by the fixed-frequency air conditioner when the temperature of the air outlet is higher, therefore, the fan is restarted to supply air at a low speed after the first time of time delay in the application, the wind sent out by the fixed-frequency air conditioner can be kept at a lower temperature, the peculiar smell in the wind blown out by the fixed-frequency air conditioner is avoided, and the comfort level experience of a user is ensured.
In addition, because the blade of air conditioner air outlet switches to the open mode from the closed condition and often needs the certain time, if the blade of air outlet is not opened completely when the fan is opened, the wind gap is less, noise such as flute sound appears easily, and open the fan through the time delay very first time in this application, can avoid appearing the condition that the blade of air outlet is not opened completely to reduce the noise of fan opening process.
The turn-on command of the fixed-frequency air conditioner may be a command sent by a control device (for example, a remote controller) for controlling the fixed-frequency air conditioner, and the fixed-frequency air conditioner controls the compressor to start operating and adjusts the indoor ambient temperature after receiving the command.
The first time can be specifically set according to the indoor environment and the actual running condition of the fixed-frequency air conditioner.
After delaying the first time, the fan may be controlled to operate at the first rotational speed all the time, or the fan may be controlled to operate at the first rotational speed all the time until the indoor ambient temperature reaches a certain set threshold, or, in an embodiment, a maintaining time of the low-speed operation of the fan may be further set, so that the fan only keeps operating at the low speed for a period of time, so as to avoid affecting the adjustment of the indoor temperature.
Specifically, the step of controlling the fan to operate at the first rotation speed specifically includes:
controlling the fan to operate at a first rotating speed within a first operating time;
and after the first running time, stopping controlling the fan to run at the first rotating speed.
The first operation time may include a minimum operation time during which the fan is controlled to operate at the first rotation speed and a maximum operation time after which the fan is stopped from being controlled to operate at the first rotation speed.
In this embodiment, the time for controlling the low-speed operation of the fan is controlled, and after the first operation time, the low-speed operation of the fan is stopped, at this time, the fan may operate according to a rotation speed value set by a user or according to a preset rotation speed, so as to avoid that the continuous low-speed operation affects the adjustment of the indoor environment temperature, and improve the adjustment efficiency of the indoor environment temperature.
During the first operation time, the fan can always keep the first rotating speed and low speed operation. Alternatively, in a preferred embodiment, the rotation speed of the fan can be timely adjusted by combining the indoor environment temperature and the coil temperature of the indoor heat exchanger, so as to ensure the comfort level of the indoor environment.
Specifically, the step of controlling the fan to operate at the first rotation speed during the first operation time further comprises:
and in a first operation time, if the indoor environment temperature is smaller than a first temperature threshold value and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold value, stopping controlling the fan to operate at a first rotating speed, and adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located.
Preferably, the fan is stopped to be controlled to operate at the first rotation speed within the first operation time, the rotation speed of the fan is adjusted according to the indoor environment temperature and the coil temperature of the indoor heat exchanger after the operation time of the fan reaches the minimum operation time, and the fixed-frequency air conditioner is enabled to operate at a low speed for the minimum operation time, so that the problem that peculiar smell wind is blown out after the fixed-frequency air conditioner is started is avoided to the greatest extent, and the user experience is improved.
In the low-speed operation process of the fan, if the indoor environment temperature is monitored to be smaller than a first temperature threshold value, namely the indoor environment temperature is lower, at the moment, if the coil temperature of the indoor heat exchanger is monitored to be lower, the low-speed operation of the fan is stopped in advance, the rotating speed of the fan is redetermined according to the coil temperature of the indoor heat exchanger, the fixed-frequency air conditioner can always blow out wind with proper temperature in different environments, and the indoor environment temperature adjusting efficiency and the user experience are improved.
In order to solve the above problem, in an embodiment, the step of controlling the fan to operate at the first rotation speed during the first operation time further includes:
and in a first operation time, if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value, controlling the fan to operate at a second rotating speed.
Wherein the second rotational speed is greater than the first rotational speed.
The second rotation speed may be a higher rotation speed value preset by a user, and the fan is operated at a high speed at the second rotation speed. The second rotating speed can be specifically set according to the type and the operation condition of the fixed-frequency air conditioner.
In the embodiment of the application, when the indoor environment temperature is detected to be higher, the low-speed air supply is stopped in advance, and the fan is controlled to run at a high speed at a higher second rotating speed, so that the indoor air circulation is accelerated, and the refrigeration efficiency is improved.
When the fan is controlled to operate at the second rotating speed, the fan can be controlled to operate at the second rotating speed all the time, or the fan can be controlled to operate at the second rotating speed until the indoor environment temperature reaches a certain set threshold value, or the high-speed operation maintaining time of the fan can be set, so that the fan only keeps operating at a high speed for a period of time, and the problem that the blowing temperature of the fixed-frequency air conditioner is increased due to overlarge wind speed to influence the adjustment of the indoor environment temperature is avoided.
In one embodiment, the step of controlling the fan to operate at the second rotation speed specifically includes:
controlling the fan to operate at a second rotating speed within a second operating time;
and after the second operation time, stopping controlling the fan to operate at a second rotating speed.
In this embodiment, the time for controlling the high-speed operation of the fan is controlled, and after the second operation time, the control for controlling the high-speed operation of the fan is stopped, at this time, the fan may operate according to a rotation speed value set by a user or according to a preset rotation speed, so as to avoid that the air supply temperature is too high due to too high air speed to affect the adjustment of the indoor environment temperature, and improve the adjustment efficiency of the indoor environment temperature.
During the first operation time, the fan can always keep the second rotating speed to operate at a high speed. Alternatively, in a preferred embodiment, the rotation speed of the fan can be timely adjusted by combining the indoor environment temperature and the coil temperature of the indoor heat exchanger, so as to ensure the comfort level of the indoor environment.
Specifically, before the compressor of the fixed-frequency air conditioner is started, the method further comprises the following steps:
responding to a starting instruction of the fixed-frequency air conditioner, and acquiring indoor environment temperature to obtain starting environment temperature;
the step of controlling the fan to operate at the second rotation speed during the second operation time further comprises:
within a second operation time, if the indoor environment temperature meets the first temperature condition, stopping controlling the fan to operate at a second rotating speed, and adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located;
the first temperature condition comprises that the temperature difference value between the indoor environment temperature and the starting environment temperature is greater than a first temperature difference threshold value, or the indoor environment temperature is less than the first temperature threshold value.
The starting-up ambient temperature can be the indoor ambient temperature detected by the fixed-frequency air conditioner at the moment of receiving the starting instruction, and the fixed-frequency air conditioner starts to operate after receiving the starting instruction, so that the indoor ambient temperature is adjusted.
When the temperature difference value between the detected indoor environment temperature and the starting environment temperature is larger than a first temperature difference threshold value, namely the indoor environment temperature is far lower than the indoor environment temperature when the fixed-frequency air conditioner is started, or when the detected indoor environment temperature is lower, the rotating speed of the fan can be further adjusted by combining the coil temperature of the indoor heat exchanger, the heat exchange effect of the fixed-frequency air conditioner is improved, the comfort level of a user is experienced, and meanwhile the operation reliability of the fixed-frequency air conditioner is guaranteed.
As shown in fig. 4, the present application also provides a control apparatus of a fixed-frequency air conditioner, in which a fan of the fixed-frequency air conditioner is operated at a first rotation speed, the apparatus comprising:
the temperature acquisition module 101 is used for acquiring the indoor environment temperature and the coil temperature of the indoor heat exchanger;
the first operation module 102 is configured to, if the indoor environment temperature is less than a first temperature threshold and the coil temperature of the indoor heat exchanger is less than a second temperature threshold, adjust the rotation speed of the fan according to a temperature interval in which the coil temperature of the indoor heat exchanger is located;
a second operation module 103, configured to control the fan to operate at a second rotation speed if the indoor ambient temperature is greater than or equal to a first temperature threshold and the coil temperature of the indoor heat exchanger is less than a second temperature threshold; wherein the second rotational speed is greater than the first rotational speed.
It should be noted that, when the fixed-frequency air conditioner control device provided in the foregoing embodiment executes the fixed-frequency air conditioner control method, only the division of the above functional modules is taken as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to complete all or part of the above described functions. In addition, the control device of the fixed-frequency air conditioner and the control method of the fixed-frequency air conditioner provided by the above embodiment belong to the same concept, and the specific implementation process is described in the method embodiment and is not described herein again.
As shown in fig. 5, an embodiment of the present application further provides a fixed-frequency air conditioner 200, which includes a memory 201, a processor 202, and a computer program stored in the memory 201 and executable by the processor 202, where the processor 202 implements the steps of the fixed-frequency air conditioner control method according to any one of the above items when executing the computer program.
The Memory 201 includes Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (Electrically-Erasable Programmable Read-Only Memory (EEPROM)), compact disc Read-Only Memory (CD-ROM) or other optical disc storage, magnetic disk storage, tape storage, or any other medium readable by a computer that can be used to carry or store data.
The processor 202 is a Control Unit (Control Unit) of the constant frequency air conditioner 200, connects various components of the entire constant frequency air conditioner 200 using various interfaces and lines, and performs various functions of the constant frequency air conditioner 200 and processes data by operating or executing programs or modules stored in the memory 201 and calling data stored in the memory 201. For example, the processor 202 implements all or part of the steps of the constant-frequency air conditioner control method described in the embodiment of the present application when executing the computer program stored in the memory; or realize all or part of the functions of the constant-frequency air conditioner control device. The processor 202 may be composed of an integrated circuit, for example, a single packaged integrated circuit, or may be composed of a plurality of integrated circuits packaged with the same function or different functions, and includes one or more Central Processing Units (CPUs), microprocessors, digital processing chips, graphics processors, and combinations of various control chips.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (11)
1. A method of controlling a fixed frequency air conditioner, wherein a fan of the fixed frequency air conditioner is operated at a first rotational speed, the method comprising the steps of:
acquiring the indoor environment temperature and the coil temperature of an indoor heat exchanger;
if the indoor environment temperature is smaller than a first temperature threshold value and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold value, adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located;
if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value, controlling the fan to operate at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed.
2. The method according to claim 1, wherein the step of adjusting the rotation speed of the fan according to the temperature interval in which the temperature of the coil of the indoor heat exchanger is located specifically comprises:
if the temperature of the coil pipe of the indoor heat exchanger is in a first temperature interval, increasing the rotating speed of a fan of the fixed-frequency air conditioner according to a preset speed increasing value;
if the temperature of the coil pipe of the indoor heat exchanger is in a second temperature interval, maintaining the rotating speed of the fan;
if the temperature of the coil pipe of the indoor heat exchanger is in a third temperature interval, reducing the rotating speed of the fan according to a preset speed reduction value;
wherein the first temperature interval is less than the second temperature interval and less than the third temperature interval.
3. The method for controlling a fixed-frequency air conditioner according to claim 2, wherein before adjusting the rotation speed of the fan according to the temperature interval in which the temperature of the coil of the indoor heat exchanger is located, the method further comprises:
acquiring the temperature change trend of the temperature of the coil;
if the temperature change trend of the coil temperature is in a descending trend and the coil temperature is greater than T3, determining that the coil temperature of the indoor heat exchanger is in a third temperature interval;
if the temperature change trend of the coil temperature is in a descending trend and the coil temperature is not less than T1 and not more than T3, determining that the coil temperature of the indoor heat exchanger is in a second temperature interval;
if the temperature change trend of the coil pipe temperature is in a descending trend and the coil pipe temperature is less than T1, determining that the coil pipe temperature of the indoor heat exchanger is in a first temperature interval;
if the temperature change trend of the coil temperature is in an ascending trend and the coil temperature is greater than T4, determining that the coil temperature of the indoor heat exchanger is in a third temperature interval;
if the temperature change trend of the coil pipe temperature is in a descending trend, and the temperature of the coil pipe is more than or equal to T2 and less than or equal to T4, determining that the temperature of the coil pipe of the indoor heat exchanger is in a second temperature interval;
if the temperature variation trend of the coil temperature is in a descending trend and the coil temperature is less than T2, determining that the coil temperature of the indoor heat exchanger is in a first temperature interval;
wherein, T1, T2, T3 and T4 are interval temperature thresholds, and T1 is more than T2 and less than T3 and less than T4.
4. The constant-frequency air conditioner control method according to claim 1, further comprising, before obtaining the indoor ambient temperature and the coil temperature of the indoor heat exchanger, the steps of:
and responding to a starting instruction of the fixed-frequency air conditioner, starting a compressor of the fixed-frequency air conditioner, delaying the first time, starting the fan and controlling the fan to rotate at a first rotating speed.
5. The method as claimed in claim 4, wherein the step of controlling the fan to operate at the first rotation speed comprises:
controlling the fan to operate at a first rotating speed within a first operating time;
and after the first running time, stopping controlling the fan to run at the first rotating speed.
6. The method as claimed in claim 5, wherein the step of controlling the fan to operate at the first rotation speed during the first operation time further comprises:
and in a first operation time, if the indoor environment temperature is smaller than a first temperature threshold value and the coil temperature of the indoor heat exchanger is smaller than a second temperature threshold value, stopping controlling the fan to operate at a first rotating speed, and adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located.
7. The method as claimed in claim 5, wherein the step of controlling the fan to operate at the first rotation speed during the first operation time further comprises:
in a first operation time, if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value, controlling the fan to operate at a second rotating speed; wherein the second rotational speed is greater than the first rotational speed.
8. The method as claimed in claim 1, wherein the step of controlling the fan to operate at the second speed comprises:
controlling the fan to operate at a second rotating speed in a second operating time;
and after the second operation time, stopping controlling the fan to operate at a second rotating speed.
9. The method as claimed in claim 8, further comprising the steps of, before turning on the compressor of the fixed frequency air conditioner:
responding to a starting instruction of the fixed-frequency air conditioner, acquiring indoor environment temperature, and acquiring starting environment temperature;
controlling the fan to operate at a second speed for a second operating time further comprises:
within a second operation time, if the indoor environment temperature meets a first temperature condition, stopping controlling the fan to operate at a second rotating speed, and adjusting the rotating speed of the fan according to a temperature interval where the coil temperature of the indoor heat exchanger is located;
the first temperature condition includes that a temperature difference value between the indoor environment temperature and the starting environment temperature is greater than a first temperature difference threshold value, or the indoor environment temperature is less than the first temperature threshold value.
10. A control apparatus for a constant frequency air conditioner, wherein a fan of the constant frequency air conditioner is operated at a first rotation speed, the apparatus comprising:
the temperature acquisition module is used for acquiring the indoor environment temperature and the coil temperature of the indoor heat exchanger;
the first operation module is used for adjusting the rotating speed of the fan according to the temperature interval where the coil temperature of the indoor heat exchanger is located if the indoor environment temperature is smaller than a first temperature threshold value;
the second operation module is used for controlling the fan to operate at a second rotating speed if the indoor environment temperature is greater than or equal to a first temperature threshold value and the temperature of a coil of the indoor heat exchanger is less than a second temperature threshold value; wherein the second rotational speed is greater than the first rotational speed.
11. A fixed frequency air conditioner comprising a memory, a processor and a computer program stored in said memory and executable by said processor, said processor implementing the steps of the fixed frequency air conditioner control method according to any one of claims 1 to 9 when executing said computer program.
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