CN114061113A - Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner - Google Patents
Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner Download PDFInfo
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- CN114061113A CN114061113A CN202010759136.6A CN202010759136A CN114061113A CN 114061113 A CN114061113 A CN 114061113A CN 202010759136 A CN202010759136 A CN 202010759136A CN 114061113 A CN114061113 A CN 114061113A
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Classifications
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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
- 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
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
- 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
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid 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
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a method for controlling temperature rise and sterilization of an air conditioner, which comprises the following steps: raising the temperature of the target heat exchanger to be higher than the target temperature for sterilization; and setting the rotating speed of the indoor fan according to the temperature of the indoor coil pipe, so that the difference value between the temperature of the indoor coil pipe and the target temperature is smaller than a threshold value. When the air conditioner self-cleaning executes the temperature rising process, the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil pipe, so that the temperature of the indoor coil pipe is close to the target temperature of the heat exchanger. So, in the intensification sterilization process, because indoor coil pipe temperature can be stabilized near target temperature under the regulation of indoor fan for after the heat exchanger temperature stably reaches target temperature, also can be stabilized on target temperature, avoided the temperature fluctuation to lead to the emergence of the unsatisfactory condition of sterilization effect, the air conditioner can be high-efficient stable clean of disinfecting on target temperature. The application also discloses a device and air conditioner for controlling the air conditioner to heat up and sterilize.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, in particular to a method and a device for controlling temperature rise and sterilization of an air conditioner and the air conditioner.
Background
At present, the cleanness and the health of the home environment are valued by more and more users, and the cleanness of the indoor environment can be greatly influenced by the level of the cleanness degree of an air conditioner as common air equipment for adjusting the temperature and the humidity of the indoor environment. From long-term use experience of the air conditioner, after the air conditioner runs for a long time, germs, bacteria, mold and other microorganisms may exist on the surface of the indoor heat exchanger, and the conventional self-cleaning cannot effectively sterilize, so that the germs circulate in a room through the air conditioner, and the air conditioner is not beneficial to human health. In order to solve the problem, the conventional air conditioner manufacturers also research and manufacture a plurality of air conditioner products with high-temperature cleaning functions, and realize high-temperature sterilization and cleaning by increasing the temperature of the indoor heat exchanger.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in the process of heating and sterilizing the indoor heat exchanger, the temperature fluctuation of the inner coil is large, so that the heat exchanger cannot be stably maintained at the target temperature, and the sterilizing effect is poor.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for controlling temperature rise and sterilization of an air conditioner and the air conditioner, and aims to solve the technical problems that when an indoor heat exchanger is heated and sterilized, the temperature of the heat exchanger cannot be stabilized at a target temperature due to large temperature fluctuation of an inner coil, and the sterilization effect is poor.
In some embodiments, the method comprises: raising the temperature of the target heat exchanger to be higher than the target temperature for sterilization; and setting the rotating speed of an indoor fan according to the temperature of the indoor coil, so that the difference value between the temperature of the indoor coil and the target temperature is smaller than a threshold value.
In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the above-described method for controlling warm sterilization of an air conditioner when executing the program instructions.
In some embodiments, the air conditioner comprises the device for controlling the heating sterilization of the air conditioner.
The method and the device for controlling temperature rise and sterilization of the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
when the air conditioner self-cleaning executes the temperature rising process, the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil pipe, so that the temperature of the indoor coil pipe is close to the target temperature of the heat exchanger. So, in the intensification sterilization process, the bacterium passes through air cycle and attaches to on the fin of indoor coil pipe and heat exchanger, because the indoor coil pipe temperature can be stabilized near target temperature under the regulation of indoor fan for after heat exchanger temperature rapid stabilization reached target temperature, also can be stabilized on target temperature, avoided the temperature fluctuation to lead to the emergence of the unsatisfactory condition of sterilization effect, the air conditioner can be high-efficient stable clean of disinfecting at target temperature.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
FIG. 1 is a schematic diagram of a method for controlling temperature rise sterilization of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for controlling temperature-raising sterilization of an air conditioner provided by the embodiment of the disclosure;
FIG. 3 is a schematic diagram of another method for controlling temperature-raising sterilization of an air conditioner provided by the embodiment of the disclosure;
fig. 4 is a schematic diagram of an apparatus for controlling temperature-raising sterilization of an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
With reference to fig. 1, an embodiment of the present disclosure provides a method for controlling temperature rise sterilization of an air conditioner, including:
step S01 is to raise the temperature of the target heat exchanger to a temperature higher than the target temperature and sterilize the heat exchanger.
When the temperature raising process of step S01 is executed, and the target heat exchanger is an indoor heat exchanger, the flow direction of the refrigerant in the air conditioning adjustment system is the same as the flow direction of the refrigerant in the heating mode, so that the refrigerant input to the target heat exchanger (i.e., the indoor heat exchanger) is a high-temperature refrigerant, and the target heat exchanger is heated by the high-temperature refrigerant, thereby achieving the cleaning effect of high-temperature sterilization.
Here, in some optional embodiments, a cleaning option such as "sterilization function" or "sterilization function" is added to the remote controller and the control panel of the air conditioner, and the cleaning option can be used to trigger the cleaning process of the air conditioner for temperature rise sterilization in this embodiment. After the user selects and operates the cleaning option, the air conditioner generates a related cleaning instruction and responds to the execution, so that the temperature of the target heat exchanger is increased to be higher than the target temperature.
In still other alternative embodiments, the air conditioner may also generate the related cleaning instruction by detecting a trigger, a timing trigger, or the like, for example, the air conditioner is additionally provided with a microorganism detection device, which may be used to detect the content of one or more specific types of microorganisms, and when the detected content of the microorganisms is higher than a set content threshold, it indicates that the air conditioner has more microorganisms breeding, and the air conditioner generates the related cleaning instruction; or, the air conditioner is provided with a timing module which can be used for counting the accumulated operation time length of the air conditioner, such as the accumulated operation time length of the refrigeration mode or the dehumidification mode, wherein with the increase of the accumulated operation time length of the refrigeration mode or the dehumidification mode of the air conditioner, the more condensed water condensed inside the air conditioner is and the more the number of microorganisms in the humid environment is increased, so that when the accumulated operation time length of the air conditioner exceeds a set time length threshold value, the air conditioner can generate a related cleaning instruction, and the temperature of the target heat exchanger is increased to be higher than the target temperature for sterilization and cleaning.
In still other optional embodiments, the air conditioner may also be triggered in linkage with the original cleaning function of the air conditioner, for example, after the original cleaning function is selected by a user, a cleaning instruction is generated and the cleaning method flow defined by the original cleaning function is executed before the cleaning flow defined by the original cleaning function is executed, or a cleaning instruction is generated and the cleaning method flow defined by the original cleaning function is executed after the cleaning flow defined by the original cleaning function is executed; that is, after a user selects an original cleaning function, the air conditioner executes two different cleaning processes in sequence, and the cleanliness of the interior of the air conditioner is effectively guaranteed through a double cleaning mode.
For example, the original cleaning function of the air conditioner is a spray cleaning function, the spray cleaning function is to spray water onto a heat exchanger of the air conditioner to clean the heat exchanger in a flowing water flushing manner, and an optional implementation manner is that the heating sterilization method flow of the present application is operated before the spray cleaning function is executed, that is, after the spray cleaning function is selected by a user, the heating sterilization method flow of the present application is controlled to kill microbes such as bacteria and the like, and then the spray cleaning function is executed, so that the flowing water can not only flush dirt such as dust, oil stains and the like, but also flush the killed microbes on the heat exchanger.
For example, the original cleaning function of the air conditioner is a frosting-defrosting cleaning mode, the flow direction of a refrigerant in the air conditioning system is firstly adjusted to be consistent with the flow direction of the refrigerant in a refrigerating mode, the refrigerant input into the indoor heat exchanger is made to be a low-temperature refrigerant, the temperature of the indoor heat exchanger is reduced by utilizing the heat absorption evaporation effect of the low-temperature refrigerant, when indoor air flows through the indoor heat exchanger, water vapor is condensed on the indoor heat exchanger, and dirt such as dust, oil stain and the like on the surface of the indoor heat exchanger can be stripped in the gas-liquid-solid conversion process of the water vapor, so that the cleaning effect on pollutants with larger volume can be improved, and microorganisms in the deep layer of the dirt can be exposed, and therefore the microorganisms can be killed more easily. After the defrosting condition is met, the flow direction of a refrigerant in the air conditioning system is adjusted to be consistent with the flow direction of a refrigerant in a heating mode, the refrigerant input into the indoor heat exchanger is a high-temperature refrigerant at the moment, so that the indoor heat exchanger is heated by the high-temperature refrigerant, and frost condensed on the surface of the indoor heat exchanger is melted after absorbing heat, so that defrosting is realized. After the defrosting temperature is reached, the indoor heat exchanger is continuously heated to a temperature higher than the target temperature, so that the sterilization cleaning is further realized on the basis of defrosting.
And step S02, setting the rotating speed of the indoor fan according to the indoor coil temperature, and enabling the difference value between the indoor coil temperature and the target temperature to be smaller than a threshold value.
Here, the threshold is used to indicate a small value, and when the difference between the indoor coil temperature and the target temperature is smaller than the threshold, the indoor coil temperature is considered to be close to the target temperature, so as to achieve the purpose of stabilizing the indoor coil temperature around the target temperature. Optionally, the threshold value ranges from [0.5,2], and may be 0.5, 1, 1.5, or 2.
In the continuous heating process and in the set time after the target temperature is reached, the rotating speed of the indoor fan is set according to the temperature of the indoor coil, so that the temperature of the indoor coil is close to the target temperature, the temperature of the heat exchanger is prevented from being unstable due to temperature fluctuation of the indoor coil, and sterilization can not be well completed.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, when the air conditioner automatically cleans and executes the temperature rise process, the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil, so that the temperature of the indoor coil is close to the target temperature of the heat exchanger. Therefore, in the temperature rise sterilization process, bacteria are attached to the indoor coil and the fins of the heat exchanger through air circulation, and the temperature of the indoor coil can be stabilized near the target temperature under the regulation of the indoor fan, so that the temperature of the heat exchanger can be stabilized at the target temperature after rapidly and stably reaching the target temperature, and the air conditioner can be sterilized and cleaned efficiently and stably at the target temperature.
Optionally, the target temperature satisfies the following condition:
T0+Tthreshold value＜Tpmax (1)
Wherein, T0Is a target temperature, TThreshold valueFor adjusting the value, the value range is 2-3.5 ℃, TpmaxThe highest temperature of the indoor coil. Therefore, the target temperature of the heat exchanger is determined according to the highest temperature of the indoor coil, so that the target temperature does not influence the pressure condition of the whole air conditioning system while meeting the sterilization requirement. Optionally, the maximum temperature T of the indoor coilpmaxIs determined according to the kind of refrigerant.
For example, for an air conditioning refrigeration system having R32 refrigerant circulating therein, the maximum temperature of the indoor coil is 63 ℃, and the sum of the target temperature and the regulation value is less than 63 ℃. In particular, the value T is adjustedThreshold valueSet to 3 ℃, the target temperature T0The value range of (A) is less than 60 ℃. The target temperature is set to 56 degrees celsius or more in consideration of the requirement of sterilization cleaning. Therefore, at the target temperature, on one hand, the high-temperature sterilization function of the air conditioner can be realized, bacteria bred or attached on the fins of the heat exchanger can be cleaned and removed in a high-temperature environment, and viruses and bacteria attached to indoor air can be removed; on the other hand, the system pressure condition can be met, so that the refrigerating system can stably operate.
Optionally, the higher the indoor coil temperature, the higher the indoor fan speed. Here, the indoor coil temperature refers to the temperature of the indoor coil during the temperature rise and/or within a preset time period after the target temperature is reached. The rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil pipe, so that the temperature of the indoor coil pipe is stabilized at the target temperature. When the temperature of the indoor coil is higher, the rotating speed of the indoor fan is increased to accelerate air supply to realize rapid cooling of the temperature of the indoor coil, so that the indoor coil is maintained at the target temperature.
For example, when the temperature of the indoor coil pipe is close to the target temperature, the indoor fan is set to rotate at a low rotation speed to slowly blow air, so that the temperature of the indoor coil pipe is continuously close to the target temperature; when the temperature of the indoor coil pipe is higher than the target temperature, the indoor fan is set to transfer at a higher rotating speed to accelerate air supply, so that the temperature of the indoor coil pipe is gradually reduced to the target temperature; when the temperature of the indoor coil pipe is close to the highest temperature of the indoor coil pipe, the indoor fan is arranged to rotate at a high speed, and rapid cooling is achieved, so that the temperature of the indoor coil pipe can be maintained at a target temperature.
Illustratively, an optional indoor coil temperature T is shown in Table 1pAnd the indoor fan rotating speed RsThe corresponding relationship of (1).
TABLE 1
| Indoor coil temperature Tp(℃) | Indoor fan rotating speed Rs |
| Tp＜T0+1 | R1 |
| T0+1≤Tp≤T0+3 | R1+m |
| Tp＞T0+3 | R1+n |
Wherein R1 represents the range of the indoor fan rotating speed as [430,470], and m and n respectively represent different rotating speed increments. Here, the range of the rotation speed increase represented by m is (70,100), and the range of the rotation speed increase represented by n is (100, 150).
As shown in table 1, in this embodiment, 3 temperature sections are preset for the indoor coil temperature, and the corresponding values of the indoor fan rotation speed are sequentially increased. Table 1 shows values of the indoor fan rotation speeds corresponding to different temperature intervals in which the indoor coil temperature is located, and in this embodiment, the value of the indoor fan rotation speed in the self-cleaning process of temperature rise sterilization may be determined by a table lookup.
Optionally, the rotation speed of the indoor fan is determined according to the following mode:
Rs＝a×Tp+k (2)
wherein R issIs the rotational speed, T, of the indoor fanpIs the indoor coil temperature, k is the correction parameter, and a is a weighted value greater than 0.
Thus, the rotating speed of the indoor fan of the air conditioner can be set according to the formula (2) through the temperature of the indoor coil. The higher the indoor coil temperature, the higher the indoor fan speed. It should be noted that in the calculation of expression (2), R is performeds、TpThe algebraic expression of the numerical value is evaluated without performing unit conversion.
Here, the air conditioner presets an association relationship between the indoor coil temperature and the weighted value a, the association relationship includes a one-to-one correspondence relationship between the indoor coil temperature and the weighted value a, and a value of the weighted value a corresponding to the current indoor coil temperature can be obtained by searching the association relationship, so as to obtain a corrected indoor fan rotation speed value corresponding to the current indoor coil temperature. Optionally, the value of the weighted value a is also related to the operation mode of the air conditioner before receiving the cleaning instruction. And setting different values for the weighted value a according to different working modes.
Optionally, the correction parameter k is determined according to the difference between the indoor coil temperature and the target temperature and the outdoor ambient temperature. So, when setting up the rotational speed of indoor fan according to indoor coil pipe temperature, the difference and the outdoor ambient temperature through indoor coil pipe temperature and target temperature revise the rotational speed of indoor fan jointly for adjustment to indoor fan rotational speed is more accurate, can be through the regulation of indoor fan rotational speed, further with indoor coil pipe temperature stabilization on target temperature, feasible air conditioner complete machine operates steadily, and high temperature sterilization is effectual.
Optionally, determining a correction factor according to a difference between the indoor coil temperature and the target temperature and the outdoor environment temperature, including: determining a temperature interval in which the difference value between the indoor coil temperature and the target temperature is located; and determining correction coefficients corresponding to the temperature interval and the outdoor environment temperature according to the preset corresponding relation.
Here, the air conditioner presets a correlation between the difference between the indoor coil temperature and the target temperature and the correlation between the outdoor environment temperature and the correction coefficient, where the correlation includes a temperature interval in which the difference between the indoor coil temperature and the target temperature is located and a correlation between the outdoor environment temperature and the correction coefficient value. Therefore, the correlation relation is searched to obtain the difference value between the current indoor coil temperature and the target temperature and the correction coefficient corresponding to the outdoor environment temperature, and then the indoor fan is controlled to regulate the rotating speed to operate according to the correction coefficient, so that the indoor coil temperature is regulated.
Optionally, under the condition that the outdoor ambient temperature is the same, the higher the temperature interval in which the difference between the indoor coil temperature and the target temperature is, the larger the value of the correction coefficient k is.
Therefore, for different indoor units under the same outdoor environment temperature, the value of the correction coefficient k is adjusted according to the temperature interval where the difference value between the indoor coil temperature and the target temperature is located, so as to correct the rotating speed of the indoor fan, so that the indoor fan can influence the indoor coil temperature and continuously approach the target temperature.
Optionally, under the condition that the difference between the indoor coil temperature and the target temperature is the same, the higher the outdoor environment temperature is, the larger the value of the correction coefficient k is.
Therefore, under the condition that the indoor coil temperature and the air-conditioning target temperature are the same, the value of the correction coefficient k is adjusted according to the outdoor environment temperature so as to correct the rotating speed of the indoor fan, so that the indoor coil temperature can be influenced and the target temperature is approached constantly.
Therefore, under the condition that the indoor coil temperature and the air-conditioning target temperature are the same, the value of the correction coefficient k is adjusted according to the outdoor environment temperature so as to correct the rotating speed of the indoor fan, so that the indoor coil temperature can be influenced and the target temperature is approached constantly.
Optionally, the indoor coil temperature is obtained in real time or at predetermined time intervals. For example, during the heating process of the heat exchanger, the indoor coil temperature is acquired in real time to set the rotating speed of the indoor fan. Or, in the process of heating the heat exchanger, the temperature of the indoor coil is acquired according to a preset time interval to set the rotating speed of the indoor fan. Here, the predetermined time interval may be 1min, 2min, 4min or 5 min.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, when the air conditioner automatically cleans and executes the temperature rise process, the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil, so that the temperature of the indoor coil is close to the target temperature of the heat exchanger. Therefore, in the temperature rise sterilization process, bacteria are attached to the indoor coil and the fins of the heat exchanger through air circulation, and the temperature of the indoor coil can be stabilized near the target temperature under the regulation of the indoor fan, so that the temperature of the heat exchanger can be stabilized at the target temperature after rapidly and stably reaching the target temperature, and the air conditioner can be sterilized and cleaned efficiently and stably at the target temperature.
With reference to fig. 2, another method for controlling temperature rise sterilization of an air conditioner is provided in an embodiment of the present disclosure, including:
and step S11, in response to the cleaning instruction, performing frost condensation on the target heat exchanger.
And (4) controlling the air conditioner to frost the target heat exchanger. The indoor heat exchanger is taken as the target heat exchanger in the present embodiment. The defrosting operation of the target heat exchanger comprises the steps of closing the four-way valve, controlling the guide plate of the indoor unit to move upwards, controlling the running frequency of the compressor and the opening of the throttling device to be fixed, and enabling the indoor heat exchanger to be frosted.
And step S12, after the defrosting condition is met, raising the temperature of the target heat exchanger to be higher than the target temperature for defrosting and sterilizing.
Optionally, the target temperature is a value higher than the defrosting temperature, and the target temperature ranges from 55 ℃ to 65 ℃. It may be 55 deg.C, 60 deg.C or 65 deg.C. When the temperature rise process of step S12 is executed, the flow direction of the refrigerant in the air conditioning adjustment system is the same as the flow direction of the refrigerant in the heating mode, and at this time, the refrigerant input to the indoor heat exchanger is a high-temperature refrigerant, so that the indoor heat exchanger is heated by the high-temperature refrigerant, and frost condensed on the surface of the indoor heat exchanger melts after absorbing heat, thereby achieving "defrosting". Here, the defrosting temperature may be determined in accordance with one or more of the thickness of the frost layer, the ambient temperature, and the ambient humidity. After the defrosting temperature is reached, the indoor heat exchanger is continuously heated to a temperature higher than the target temperature, so that sterilization is further realized on the basis of defrosting.
And step S13, setting the rotating speed of the indoor fan according to the temperature of the indoor coil and the outdoor environment temperature, and enabling the difference value between the indoor coil temperature and the target temperature to be smaller than a threshold value.
As shown in table 2, the air conditioner is preset with a corresponding relationship between the indoor coil temperature, the outdoor ambient temperature and the indoor fan rotation speed.
TABLE 2
| Outdoor ambient temperature Tao | Tr1 | Tr2 | Tr3 | Tr4 | Tr5 | |
| Indoor coil temperature Tp | Indoor fan rotating speed R | column1 | column2 | column3 | column4 | column5 |
| Tao1 | 1ine1 | 2 | 3 | 4 | 5 | 6 |
| Tao2 | line2 | 3 | 4 | 5 | 6 | 7 |
| Tao3 | line3 | 4 | 5 | 6 | 7 | 8 |
| Tao4 | line4 | 5 | 6 | 7 | 8 | 9 |
| Tao5 | line5 | 6 | 7 | 8 | 9 | 10 |
Setting the rotating speed of an indoor fan according to the temperature of the indoor coil and the outdoor environment temperature, wherein the temperature of the indoor coil and the rotating speed of the indoor fan form a positive correlation; the outdoor environment temperature and the rotating speed of the indoor fan form a positive correlation. The horizontal gauge heads of table 2 are a plurality of outdoor environment temperature values which are sequentially arranged from small to large, and column (n) is a column in which the outdoor environment temperature values and the rotating speeds of the corresponding indoor fans are located; the vertical gauge head is provided with a plurality of indoor coil temperature values which are sequentially arranged from small to large, and line (l) is a row where the indoor coil temperature value and the rotating speed of the corresponding indoor fan are located; the intersection of column (n) and line (l) is the indoor fan rotating speed corresponding to the outdoor environment temperature and the indoor coil temperature. The corresponding relation can be obtained by fitting the indoor fan rotating speed determined according to the indoor coil temperature and the indoor fan rotating speed determined according to the outdoor environment temperature according to the experimental data of typical working conditions in the research and development stage. Here, the indoor fan rotation speed may be a specific rotation speed, or may be a gear position where the rotation speed is located.
Optionally, after the indoor coil temperature and the outdoor environment temperature are obtained, the rotating speed of the indoor fan corresponding to the row and the column of the numerical value closest to the actual temperature is obtained in table 3 in a table look-up manner, so that the rotating speed of the indoor fan is set according to the indoor coil temperature and the outdoor environment temperature, the indoor coil temperature is enabled to approach the target temperature continuously through adjustment of the rotating speed of the indoor fan, and the requirement of sterilization and cleaning is met.
Specifically, table 3 shows a correspondence between an optional indoor ambient temperature, an outdoor ambient temperature, and an indoor fan rotational speed.
TABLE 3
| Outdoor ambient temperature Tao | Tao1 | Tao2 | Tao3 | |
| Indoor coil temperature Tp | Indoor fan rotating speed R | Tao＜17 | 17≤Tao≤30 | Tao＞30 |
| Tp1 | Tp＜Ts+1 | R1 | R1+k | R1+2k |
| Tp2 | Ts+1≤Tp≤Ts+3 | R1+m | R1+k+m | R1+2k+m |
| Tp3 | Tp＞Ts+3 | R1+n | R1+k+n | R1+2k+n |
Wherein R1 represents the range of the indoor fan rotating speed as (430,470), m, n and k are rotating speed increment respectively, wherein the rotating speed increment represented by n is larger than the rotating speed increment represented by m. Here, it should be noted that the rotation speed of the fan after increasing the rotation speed increment is still less than or equal to the preset air conditioner mute maximum rotation speed under the same condition. And when the rotating speed of the fan after the rotating speed increment is increased is higher than the maximum mute rotating speed of the air conditioner under the condition, the fan is operated at the maximum mute rotating speed of the air conditioner.
And step S14, after the sterilization completion condition is met, the cleaning mode is quitted, and the air conditioner is controlled to be recovered to the working mode before cleaning.
Wherein the sterilization completion conditions include one or more of the following conditions: the temperature of a coil pipe of the indoor heat exchanger is in a first preset duration, and the numerical value is continuously greater than a first set temperature; the temperature variation of the coil of the indoor heat exchanger is that the value is continuously smaller than a first set variation in a first preset time; the continuous running time of the compressor is longer than a second preset time length; the time length of the heat exchanger reaching the target temperature meets a second preset time length. Wherein the first preset time period is set to be 5-7 minutes, and the second preset time period is set to be 30-35 minutes. Therefore, the cleaning mode is exited after the sterilization completion condition is met by counting the temperature change condition within the set time or the working condition of the compressor in the temperature rising process.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, after the self-cleaning condensation-defrosting procedure of the air conditioner, the temperature rise process is continuously executed, and the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil, so that the temperature of the indoor coil is close to the target temperature of the heat exchanger. Therefore, in the temperature rise sterilization process, bacteria are attached to the indoor coil and the fins of the heat exchanger through air circulation, and the temperature of the indoor coil can be stabilized near the target temperature under the regulation of the indoor fan, so that the temperature of the heat exchanger can be stabilized at the target temperature after rapidly and stably reaching the target temperature, and the air conditioner can be sterilized and cleaned efficiently and stably at the target temperature.
As shown in fig. 3, a method for controlling temperature-raising sterilization of an air conditioner according to an embodiment of the present disclosure includes:
step S21 is to raise the temperature of the target heat exchanger to a temperature higher than the target temperature and sterilize the heat exchanger.
And step S22, setting the rotating speed of the indoor fan according to the indoor coil temperature, and enabling the difference value between the indoor coil temperature and the target temperature to be smaller than a threshold value.
And step S23, under the condition that the sterilization completion condition is met, judging whether the defrosting condition is met, when the defrosting condition is met, defrosting the outdoor heat exchanger, otherwise, exiting the heating sterilization cleaning mode, and controlling the air conditioner to recover to the working mode before sterilization cleaning.
Optionally, the defrost condition is determined based on the outdoor ambient temperature and the outdoor heat exchanger coil temperature. The temperature of the coil of the outdoor heat exchanger can be acquired by a defrosting sensor on the outdoor heat exchanger. The condensation point temperature of the outdoor air can be calculated by collecting the outdoor ambient temperature. And comparing the condensation point temperature with the outdoor heat exchanger coil temperature, and when the outdoor heat exchanger coil temperature is continuously less than or equal to the condensation point temperature within a set time, satisfying the defrosting condition and defrosting the outdoor heat exchanger.
Alternatively, the dew point temperature is obtained by:
Tes＝C×Tao-e (3)
wherein, TesIs the dew point temperature, TaoIs the outdoor ambient temperature, C is a weighted value determined according to the outdoor ambient temperature, and e is a constant.
Optionally, when the outdoor ambient temperature is less than 0 ℃, the value of the weighting value C is set to 0.8; when the outdoor ambient temperature is greater than or equal to 0 ℃, the value of the weight value C is set to 0.6. The value of the constant e ranges from 4 to 7 and can be 4, 5, 6 or 7.
Optionally, for defrosting of the outdoor heat exchanger, heating defrosting of the outdoor heat exchanger can be realized through a defrosting circuit arranged on the outdoor heat exchanger; the air conditioner can also be switched by the flow direction of the refrigerant, so that the air conditioner is switched to a state that the outdoor heat exchanger works as a condenser, the outdoor heat exchanger is defrosted, the refrigerant is condensed and released when flowing through the outdoor heat exchanger, the temperature of the outdoor heat exchanger is increased, frost attached to the outdoor heat exchanger is removed, the working state that the outdoor heat exchanger is used as the condenser is kept to continue to operate after the frost attached to the outdoor heat exchanger is removed, and the temperature of the outdoor heat exchanger is continuously increased until the outdoor heat exchanger exits the defrosting mode.
Alternatively, a defrosting sensor can be arranged on the outdoor heat exchanger, and the entering and exiting of the defrosting mode can be realized by sensing the frost layer condition on the surface of the outdoor heat exchanger or the temperature of a coil of the outdoor heat exchanger through the defrosting sensor. For example, the defrost condition includes the defrost sensor detecting that the temperature of the outer coil of the outdoor heat exchanger is less than a third set temperature. And at the moment, entering a defrosting mode, and starting a defrosting circuit arranged on the outdoor heat exchanger to heat and defrost. And when the defrosting sensor detects that the temperature of the outer coil of the outdoor heat exchanger is greater than or equal to the fourth set temperature, the defrosting mode is exited. Optionally, the cleaning mode of heating sterilization is simultaneously exited, and the air conditioner is controlled to return to the working mode before frost condensation.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, the temperature rise process is executed after the defrosting process, and the defrosting process is executed after the temperature rise process under the condition that the air conditioner meets the defrosting condition. Through the defrosting process, on one hand, the frost layer generated by the outdoor heat exchanger in the rapid temperature rise process of the indoor heat exchanger is cleaned, and on the other hand, the outdoor heat exchanger is cleaned. And the rotating speed of the indoor fan is adjusted according to the temperature of the indoor coil pipe in the temperature rising process, so that the temperature of the indoor coil pipe is close to the target temperature of the heat exchanger. Therefore, in the temperature rise sterilization process, bacteria are attached to the indoor coil and the fins of the heat exchanger through air circulation, and the temperature of the indoor coil can be stabilized near the target temperature under the regulation of the indoor fan, so that the temperature of the heat exchanger can be stabilized at the target temperature after rapidly and stably reaching the target temperature, and the air conditioner can be sterilized and cleaned efficiently and stably at the target temperature.
As shown in fig. 4, an apparatus for controlling temperature-raising sterilization of an air conditioner according to an embodiment of the present disclosure includes a processor (processor)100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface)102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call the logic instructions in the memory 101 to execute the method for controlling the temperature rise sterilization of the air conditioner according to the above embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101, which is a computer-readable storage medium, may be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the method for controlling temperature rise and sterilization of the air conditioner in the above embodiments.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the device for controlling the temperature rise and sterilization of the air conditioner.
The embodiment of the disclosure provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the method for controlling heating and sterilization of an air conditioner.
The embodiment of the present disclosure provides a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, cause the computer to execute the above method for controlling heating and sterilization of an air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. A method for controlling temperature rise sterilization of an air conditioner is characterized by comprising the following steps:
raising the temperature of the target heat exchanger to be higher than the target temperature for sterilization;
and setting the rotating speed of an indoor fan according to the temperature of the indoor coil, so that the difference value between the temperature of the indoor coil and the target temperature is smaller than a threshold value.
2. The method of claim 1, wherein the target temperature satisfies the following condition:
T0+Tthreshold value＜Tpmax
Wherein, T0Is the target temperature, TThreshold valueTo set the regulation value, TpmaxThe highest temperature of the indoor coil.
3. The method of claim 1, wherein the higher the indoor coil temperature, the higher the indoor fan speed.
4. The method of claim 1, wherein the indoor fan speed is determined according to:
Rs＝a×Tp+k
wherein R issIs the rotational speed, T, of the indoor fanpIs the indoor coil temperature, k is the correction parameter, and a is a weighted value greater than 0.
5. The method of claim 4, wherein the correction parameter k is determined based on a difference between an indoor coil temperature and a target temperature and an outdoor ambient temperature.
6. The method of claim 5, wherein determining the correction factor based on the difference between the indoor coil temperature and a target temperature and an outdoor ambient temperature comprises:
determining a temperature interval in which the difference value between the indoor coil temperature and the target temperature is located;
and determining correction coefficients corresponding to the temperature interval and the outdoor environment temperature according to a preset corresponding relation.
7. The method according to claim 6, wherein the correction coefficient k is larger as the difference between the indoor coil temperature and the target temperature is higher in the temperature interval under the condition that the outdoor environment temperature is the same.
8. The method of claim 6, wherein the correction factor k is larger for higher outdoor ambient temperatures with the same difference between the indoor coil temperature and the target temperature.
9. An apparatus for controlling warm sterilization of an air conditioner, comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for controlling warm sterilization of an air conditioner according to any one of claims 1 to 8 when executing the program instructions.
10. An air conditioner, characterized by comprising the device for controlling heating and sterilization of the air conditioner according to claim 9.
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| CN202010759136.6A CN114061113A (en) | 2020-07-31 | 2020-07-31 | Method and device for controlling temperature rise and sterilization of air conditioner and air conditioner |
| PCT/CN2021/077590 WO2021223496A1 (en) | 2020-07-31 | 2021-02-24 | Method and apparatus for controlling temperature increase and sterilization of air conditioner, and air conditioner |
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| CN114322195A (en) * | 2021-12-20 | 2022-04-12 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner, air conditioner and storage medium |
| CN115900030A (en) * | 2023-01-13 | 2023-04-04 | 南京天加环境科技有限公司 | Control method and device for centrifugal fan of air conditioner and air conditioner |
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