CN111578451B - 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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- CN111578451B CN111578451B CN202010338428.2A CN202010338428A CN111578451B CN 111578451 B CN111578451 B CN 111578451B CN 202010338428 A CN202010338428 A CN 202010338428A CN 111578451 B CN111578451 B CN 111578451B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/43—Defrosting; Preventing freezing of indoor units
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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
- F24F11/65—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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: in response to a cleaning instruction, carrying out frost condensation on the indoor heat exchanger; and after the defrosting condition is met, raising the temperature of the indoor heat exchanger to be higher than the set temperature for defrosting and sterilizing, and setting the target temperature of the air conditioner according to the indoor environment temperature. By executing the temperature rise process after the frost condensation process, on one hand, the frost layer generated in the frost condensation process is peeled off, and on the other hand, the heat exchanger is sterilized and cleaned. In the process of heating up, according to the real-time target temperature who sets up the air conditioner of indoor ambient temperature for in the rapid heating up process of indoor heat exchanger, adjust the target temperature of air conditioner, adjust according to target temperature with other functional units that make the air conditioner, avoid producing great temperature fluctuation because of the rapid heating up of heat exchanger, keep indoor temperature steady, improve user's use comfort.
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 air conditioner is used as common air equipment for adjusting the temperature and the humidity of the indoor environment, so that the cleanness of the indoor environment can be greatly influenced by the level of the cleanness. 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 view of this situation, many air-conditioning products with high-temperature cleaning function, such as air-conditioners with steam-cleaning heat exchanger function, are also developed and manufactured by existing air-conditioning manufacturers.
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 self-cleaning high-temperature process, the indoor heat exchanger can be rapidly heated, so that the problem of large temperature fluctuation of the indoor environment is caused, and the use experience of a user 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 problem that in a self-cleaning high-temperature process, an indoor heat exchanger rapidly rises in temperature to cause large temperature fluctuation of an indoor environment.
In some embodiments, the method comprises: in response to a cleaning instruction, carrying out frost condensation on the indoor heat exchanger; and after the defrosting condition is met, the temperature of the indoor heat exchanger is raised to be higher than the set temperature for defrosting and sterilizing, and the target temperature of the air conditioner is set according to the indoor environment temperature.
In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the method for controlling warm sterilization of an air conditioner as described above when executing the program instructions.
In some embodiments, the air conditioner comprises the method for controlling the heating sterilization of the air conditioner.
The method and the device for controlling the 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:
by executing the temperature rise process after the frost condensation process, on one hand, the frost layer generated in the frost condensation process is peeled off, and on the other hand, the heat exchanger is sterilized and cleaned. In the temperature rising process, the target temperature of the air conditioner is set according to the indoor environment temperature in real time, so that in the rapid temperature rising process of the indoor heat exchanger, the target temperature of the air conditioner is adjusted to enable other functional units of the air conditioner to be adjusted according to the target temperature, great temperature fluctuation caused by rapid temperature rising of the heat exchanger is avoided, the indoor temperature is kept stable, and the use comfort level of a user is improved.
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 flow chart 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 flow chart diagram of another method for controlling temperature rise sterilization of an air conditioner according to an embodiment of the present disclosure;
FIG. 3 is a schematic flow chart of another method for controlling temperature rise sterilization of an air conditioner provided by the embodiment of the disclosure;
FIG. 4 is a schematic flow chart diagram illustrating another method for controlling temperature rise sterilization of an air conditioner according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of an apparatus for controlling temperature-raising sterilization of an air conditioner according to an embodiment of the present disclosure;
fig. 6 is a schematic diagram of another apparatus for controlling temperature rise sterilization of an air conditioner provided by the embodiment of the disclosure.
Detailed Description
So that the manner in which the features and advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. 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 as appropriate for the embodiments of the disclosure described herein. 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:
and step S01, responding to the cleaning instruction, and carrying out frost condensation on the indoor heat exchanger.
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 a cleaning process for operating the air conditioner in this embodiment. Thus, after the user selects the cleaning option, the air conditioner generates a relevant cleaning instruction and responds to the execution.
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 a large number of microorganisms, and the air conditioner generates the related cleaning instruction; still alternatively, the air conditioner has a timing module, which is configured to count the cumulative operating time of the air conditioner, such as the cumulative operating time of the cooling mode or the dehumidifying mode, wherein as the cumulative operating time of the cooling mode or the dehumidifying mode of the air conditioner increases, the more condensed water is condensed inside the air conditioner and the more the number of microorganisms in the humid environment increases, so that the air conditioner may be configured to generate the related cleaning instruction when the cumulative operating time of the air conditioner exceeds the set time threshold.
In still other alternative 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 the 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.
In the indoor heat exchanger in this embodiment, when step S01 is executed, the air conditioner adjusts the refrigerant flow direction in the system to be the same as the refrigerant flow direction in the refrigeration mode, so that the refrigerant input to the indoor heat exchanger is a low-temperature refrigerant, and the temperature of the indoor heat exchanger is reduced by utilizing the endothermic evaporation effect of the low-temperature refrigerant.
Optionally, the frost critical temperature is less than or equal to 0 ℃. In this embodiment, the frost critical temperature is 0 ℃.
And step S02, after the defrosting condition is met, raising the temperature of the indoor heat exchanger to be higher than the set temperature for defrosting and sterilizing, and setting the target temperature of the air conditioner according to the indoor environment temperature.
Optionally, the set temperature is a value higher than the defrosting temperature, and the set 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 S02 is executed, the air conditioner adjusts the flow direction of the refrigerant in the system to be consistent with 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 be higher than the set temperature, so that sterilization is further realized on the basis of defrosting. In the continuous heating process, the target temperature of the air conditioner is set in real time according to the indoor environment temperature, so that other functional units of the air conditioner are promoted to be adjusted according to the target temperature in the rapid heating process of the indoor heat exchanger by adjusting the target temperature of the air conditioner, and the phenomenon that the rapid heating of the heat exchanger generates large temperature fluctuation is avoided.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, provided by the embodiment of the disclosure, the temperature rise process is executed after the defrosting process, on one hand, the frost layer generated in the defrosting process is peeled off, and on the other hand, the sterilization and cleaning of the heat exchanger are realized. In the temperature rising process, the target temperature of the air conditioner is set according to the indoor environment temperature in real time, so that in the rapid temperature rising process of the indoor heat exchanger, the target temperature of the air conditioner is adjusted to enable other functional units of the air conditioner to be adjusted according to the target temperature, great temperature fluctuation caused by rapid temperature rising of the heat exchanger is avoided, the indoor temperature is kept stable, and the use comfort level of a user is improved.
Alternatively, when the target temperature of the air conditioner is set according to the indoor ambient temperature, the higher the indoor ambient temperature of the air conditioner is, the higher the target temperature of the air conditioner is. Here, during the continuous temperature rise, as the temperature of the indoor heat exchanger rises, the indoor ambient temperature is affected accordingly, and under the condition that the target temperature of the air conditioner is not changed, the rise of the indoor ambient temperature can cause the operation parameters of partial components of the air conditioner, such as a fan, a compressor and a throttling device, to change. Therefore, the target temperature is correspondingly adjusted according to the indoor environment temperature, so that the air conditioner can run stably relatively, and the influence of temperature fluctuation caused by rapid temperature rise of the heat exchanger on the air conditioner can be reduced.
Alternatively, the target temperature of the air conditioner is determined according to the following manner:
Ts＝a×Tr+k (1)
wherein, TsIs a target temperature, T, of the air conditionerrThe indoor ambient temperature, k is a correction parameter, and a is a weighted value greater than 0.
In this way, the target temperature of the air conditioner can be set by the indoor ambient temperature according to equation (1). The higher the indoor ambient temperature, the higher the target temperature of the air conditioner. Note that the calculation in equation (1)Then, T is performeds、TrThe algebraic expression of the numerical value is evaluated without performing unit conversion.
Optionally, the value of the weighted value a and the working 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 value of the weighting value a is also related to the change speed of the indoor environment temperature. The faster the indoor ambient temperature changes, the smaller the value of the weighted value a.
Optionally, the indoor ambient temperature is acquired in real time or at predetermined time intervals. For example, after the defrosting condition is met, in the process of heating the indoor heat exchanger, the indoor environment temperature is acquired in real time to set the target temperature of the air conditioner. After the defrosting condition is met, in the process of heating the indoor heat exchanger, the indoor environment temperature is acquired according to a preset time interval to set the target temperature of the air conditioner. Here, the predetermined time interval may be 1min, 2min, 4min or 5 min.
Optionally, the correction parameter k in equation (1) is determined according to the temperature of the inner coil of the air conditioner. In this way, when the target temperature of the air conditioner is set according to the indoor environment temperature, the value of the target temperature is corrected by the temperature of the inner coil of the air conditioner. In the process of heating the indoor heat exchanger, the temperature of the inner coil pipe is continuously increased, and the change speed of the temperature of the inner coil pipe is faster than that of the indoor environment temperature. The numerical value of the target temperature is corrected through the temperature of the inner coil pipe, so that the technical problems that the change speed of the indoor environment temperature is low, the numerical value is changed slightly when the target temperature is set according to the numerical value, the operation parameters of partial parts of the air conditioner are changed greatly, and the air conditioner runs unstably when the indoor heat exchanger is heated rapidly are solved.
Optionally, determining a correction parameter based on the inner coil temperature comprises: and under the condition that the temperature of the inner coil is less than or equal to the first threshold, the higher the temperature of the inner coil is, the smaller the value of the correction parameter is. In the case that the inner coil temperature is above the first threshold, the correction parameter is determined from the inner coil target temperature. Here, the first threshold value is used to indicate a value less than or equal to a set temperature. During the continuous rising of the temperature of the indoor heat exchanger, the temperature of the inner coil is also continuously increased and the changing speed is higher than the temperature of the indoor heat exchanger. Under the condition that interior coil pipe temperature is less than or equal to first threshold value, interior coil pipe temperature lasts the intensification, and indoor heat exchanger's temperature lasts the rising, confirms correction parameter according to interior coil pipe temperature this moment, and the air conditioner operates steadily when can guaranteeing rapid heating up, avoids rising temperature the too fast and arouses the protection, is unfavorable for system operation. Under the condition that the temperature of the inner coil is larger than the first threshold value, the temperature rising speed of the inner coil is slowed down, the temperature change of the indoor heat exchanger is small, and at the moment, correction parameters are determined according to the temperature of the inner coil, so that excessive correction can be caused, and the adjustment of the air conditioner to the indoor environment temperature is influenced.
Optionally, determining a correction parameter based on the inner coil temperature comprises: determining a temperature interval of the temperature of the inner coil; and determining a correction parameter corresponding to the temperature interval according to a preset corresponding relation.
For example, when the temperature of the inner coil is less than the first set temperature, the correction parameter k is 2, and the target temperature of the air conditioner is according to Ts＝a×Tr+2 is set. When the temperature of the inner coil is greater than or equal to the first set temperature, the correction parameter k is 1, and the target temperature of the air conditioner is determined according to Ts＝a×Tr+1 is set.
Here, the air conditioner is preset with a corresponding relationship between the temperature interval of the inner coil temperature and the correction parameter. The larger the maximum critical value of the temperature interval is, the smaller the value of the corresponding correction parameter is.
So, after setting up the target temperature of air conditioner according to indoor ambient temperature in this disclosed embodiment, further according to the corresponding relation of interior coil pipe temperature and correction parameter, revise the target temperature, the air conditioner operates steadily when can guaranteeing rapid heating up, avoids rising up the temperature too fast and arouses the protection, is unfavorable for the system operation.
Alternatively, in step S01, the operation of frosting the surface of the indoor heat exchanger includes: the method comprises the steps of obtaining a first frost parameter according to the environment temperature, wherein the first frost parameter comprises a first rotating speed of a fan corresponding to an indoor heat exchanger. In the process of frost condensation, the indoor heat exchanger belongs to the exothermic state, and the heat release efficiency of the indoor heat exchanger can be influenced by the level of the heat exchange temperature difference between the ambient temperature of the indoor heat exchanger and the indoor heat exchanger, so that the frost condensation effect of the indoor heat exchanger is influenced. Here, the ambient temperature is in positive correlation with the fan, that is, the higher the ambient temperature is, the smaller the heat exchange temperature difference between the ambient temperature and the indoor heat exchanger is, and the larger the heat exchange air volume required for ensuring the heat release effect is. In this embodiment, the rotational speed of fan is adjusted according to ambient temperature's height at the frost in-process to strengthen indoor heat exchanger's exothermic efficiency, and then can strengthen the frost effect.
Optionally, the operation of controlling the surface of the indoor heat exchanger to be frosted includes: controlling an indoor fan corresponding to the indoor heat exchanger to keep a medium wind speed state in a first period; and controlling the fan corresponding to the indoor heat exchanger to keep in a shutdown state in a second time interval.
In the first time period, more air flows through the target heat exchanger by controlling the operation of the fan, so that more water vapor can be condensed from a gaseous state to a liquid state; in the second time period, the air conditioner inputs low-temperature refrigerant to the target heat exchanger, and in order to enable the target heat exchanger to be cooled as soon as possible and reduce the loss of cold energy to the environment, the fan is controlled to be in a stop state. Optionally, the duration of the first period and the second period is determined according to the ambient humidity.
Optionally, the operation of controlling the surface of the indoor heat exchanger to be frosted further comprises: and controlling a guide plate of the indoor unit to be in a closed state or a slightly opened state. Therefore, heat exchange between the indoor heat exchanger and the indoor environment in the frosting process is reduced, and the frosting efficiency in the frosting process is ensured.
Alternatively, the defrosting condition in step S02 includes:
tfrost≥t2 (2)
Wherein, tFrostThe duration of the frosting process in step S01, t2Is a set frost-forming time threshold. Optionally, t2The value range of (A) is 15 to 17 minutes.
The air conditioner is provided with a timing module, and the timing module can be used for timing the continuous time of the surface of the target heat exchanger for frost condensation; after the air conditioner judges that the frost condensation completion condition is met according to the duration counted by the timing module, the condition that frost with enough thickness is condensed on the indoor heat exchanger is indicated, and at the moment, defrosting of the indoor heat exchanger can be switched.
In the present embodiment, if the defrosting condition is not satisfied, the defrosting process of step S01 is continuously performed.
Optionally, during the temperature raising process of the indoor heat exchanger, the method further includes: the maximum operation frequency of the compressor is set according to the outdoor ambient temperature, and when the calculated frequency of the compressor is higher than the maximum operation frequency, the compressor is operated according to the maximum operation frequency. Here, in the temperature rising process, the refrigerant flows into the outdoor heat exchanger from the indoor heat exchanger, and in order to ensure the defrosting effect in the temperature rising process, the refrigerant flowing into the outdoor heat exchanger is required to be capable of absorbing more heat from the external environment, so in this embodiment, the operating frequency of the compressor is adjusted to enable the refrigerant to be capable of meeting the heat exchange requirement under the current outdoor environment temperature condition.
Optionally, setting the maximum operating frequency of the compressor according to the outdoor ambient temperature includes: and determining a temperature interval where the outdoor environment temperature is located, and determining the maximum operating frequency corresponding to the temperature interval according to a preset corresponding relation.
Illustratively, a selectable relationship between the outdoor ambient temperature Tao and the maximum operating frequency F0 of the compressor during the warming process is shown in table 1.
TABLE 1
In the present embodiment, 7 temperature intervals are preset for the outdoor ambient temperature, and the corresponding values of the maximum operating frequency F0 of the compressor are sequentially increased. Table 1 shows values of the maximum operating frequency F0 of the compressor corresponding to different temperature intervals where the outdoor ambient temperature is located, and in this embodiment, the value of the maximum operating frequency F0 of the compressor during the temperature increasing process may be determined by a table lookup.
Optionally, during the temperature raising process of the indoor heat exchanger, the method further includes: the opening degree of the throttling device is set according to the outdoor environment temperature. Here, the throttle device is provided as an electronic expansion valve. In the temperature rise process, the refrigerant flows into the outdoor heat exchanger from the indoor heat exchanger, and in order to ensure the defrosting effect in the temperature rise process, the refrigerant flowing into the outdoor heat exchanger can absorb more heat from the external environment, so that the opening degree of the throttling device is adjusted to enable the throttling device to adapt to the heat exchange requirement under the current outdoor environment temperature condition.
Alternatively, the opening degree of the throttle device is determined according to the following manner:
S＝b×F0+c (3)
where S is the opening degree of the throttle device, F0 is the maximum operating frequency of the compressor, b is a weighted value, and c is a correction constant.
Here, the opening degree of the throttling device is set according to the maximum operating frequency of the compressor by the formula (3), so that the throttling device can adapt to the heat exchange requirement under the current operating condition of the compressor. The maximum operating frequency F0 of the compressor can be obtained according to the temperature range of the outdoor ambient temperature in the above embodiment. Therefore, the opening degree of the throttling device is actually set according to the outdoor environment temperature according to the formula 3, so that the throttling device can meet the heat exchange requirement under the current outdoor environment temperature condition. Note that, in the calculation of expression (3), an algebraic evaluation of S, F0 values was performed without regard to unit conversion.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, provided by the embodiment of the disclosure, the temperature rise process is executed after the defrosting process, on one hand, the frost layer generated in the defrosting process is peeled off, and on the other hand, the sterilization and cleaning of the heat exchanger are realized. In the temperature rising process, the target temperature of the air conditioner is set according to the indoor environment temperature in real time, so that in the rapid temperature rising process of the indoor heat exchanger, the target temperature of the air conditioner is adjusted to enable other functional units of the air conditioner to be adjusted according to the target temperature, great temperature fluctuation caused by rapid temperature rising of the heat exchanger is avoided, the indoor temperature is kept stable, and the use comfort level of a user is improved.
As shown in fig. 2, an embodiment of the present disclosure provides a method for controlling temperature rise and sterilization of an air conditioner, including:
and step S11, in response to the cleaning instruction, performing frost condensation on the indoor heat exchanger.
And step S12, after the defrosting condition is met, raising the temperature of the indoor heat exchanger to be higher than the set temperature for defrosting and sterilizing, and setting the target temperature of the air conditioner according to the indoor environment temperature.
Step S13, determining corresponding operation parameters according to the target temperature, and controlling the air conditioner to operate according to the operation parameters; wherein the operating parameters include one or more of an outdoor fan speed, an indoor fan speed, and a compressor frequency of the air conditioner.
Therefore, in the process that the indoor heat exchanger is continuously heated, the target temperature of the air conditioner is set through the indoor environment temperature, and the operation parameters of the air conditioner are adjusted according to the target temperature. After the operating parameters of the air conditioner are correspondingly adjusted according to the target temperature, the air conditioner can be stably operated while the indoor heat exchanger is rapidly heated, the phenomenon that the air conditioner is protected due to too fast heating is avoided, and the system operation is not facilitated.
Optionally, the air conditioner is preset with a corresponding relationship between the target temperature and one or more of the operating parameters, such as the fan speed, the indoor fan speed, and the compressor frequency. According to the target temperature, the operation parameters corresponding to the target temperature in the working mode before the air conditioner receives the cleaning instruction can be searched in the corresponding relation. Optionally, according to the temperature difference between the target temperature and the indoor environment temperature, the operating parameters corresponding to the temperature difference, including the rotation speed of the indoor fan and/or the rotation speed of the outdoor fan, in the working mode of the air conditioner before the air conditioner receives the cleaning instruction may be searched in the corresponding relationship. Optionally, according to the temperature difference between the target temperature and the outdoor environment temperature, the operating parameters corresponding to the temperature difference, including the rotating speed of the outdoor fan and/or the frequency of the compressor, in the working mode of the air conditioner before receiving the cleaning instruction may be searched in the corresponding relationship.
By adopting the method for controlling the temperature rise and sterilization of the air conditioner, provided by the embodiment of the disclosure, the temperature rise process is executed after the defrosting process, on one hand, the frost layer generated in the defrosting process is peeled off, and on the other hand, the sterilization and cleaning of the heat exchanger are realized. And in the temperature rise process, the target temperature of the air conditioner is set in real time according to the indoor environment temperature, and the operation parameters of the air conditioner are adjusted according to the target temperature. After the operating parameters of the air conditioner are correspondingly adjusted according to the target temperature, the air conditioner can be stably operated while the indoor heat exchanger is rapidly heated, the phenomenon that the air conditioner is protected due to too fast heating is avoided, and the system operation is not facilitated. The target temperature of the air conditioner is adjusted, so that other functional units of the air conditioner are adjusted according to the target temperature, the phenomenon that large temperature fluctuation is generated due to rapid temperature rise of the heat exchanger is avoided, the indoor temperature is kept stable, and the use comfort of a user is improved.
As shown in fig. 3, an embodiment of the present disclosure provides a method for controlling temperature rise sterilization of an air conditioner, including:
and step S21, in response to the cleaning instruction, performing frost condensation on the indoor heat exchanger.
And step S22, after the defrosting condition is met, raising the temperature of the indoor heat exchanger to be higher than the set temperature for defrosting and sterilizing, and setting the target temperature of the air conditioner according to the indoor environment temperature.
Step S23, when the temperature rise end condition is satisfied, defrosting the outdoor heat exchanger is performed when the defrosting condition is satisfied; otherwise, the heating sterilization cleaning mode is exited, and the air conditioner is controlled to recover to the working mode before frost condensation.
Wherein the temperature rise end condition comprises one or more of the following conditions: the temperature of the coil pipe of the indoor heat exchanger is in a third preset time, and the value is continuously greater than the first set temperature; the temperature variation of the coil of the indoor heat exchanger is continuously smaller than the first set variation in a third preset time; the continuous operation time of the compressor is greater than the fourth preset time. Wherein the duration of the third preset time is set to be 5-7 minutes, and the duration of the fourth preset time is set to be 30-35 minutes. In this way, whether the temperature rise ending condition is met or not is determined by counting the temperature change condition in the set time or the working condition of the compressor in the temperature rise process, and when the defrosting condition is met, the defrosting operation is determined or the cleaning mode is quitted.
Optionally, the defrost condition is determined based on the outdoor ambient temperature and the outdoor heat exchanger coil temperature. The temperature of the coil pipe of the outdoor heat exchanger can be acquired through 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 coil temperature of the outdoor heat exchanger, and when the coil temperature of the outdoor heat exchanger 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-m (4)
wherein, TesIs the dew point temperature, TaoIs the outdoor ambient temperature, C is a weighted value determined according to the outdoor ambient temperature, and m is a constant.
Optionally, when the outdoor ambient temperature is less than 0 ℃, the numerical 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 m 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. Wherein, at the intensification in-process, according to the target temperature of indoor ambient temperature regulation air conditioner, can guarantee that the air conditioner operates steadily when indoor heat exchanger rapid heating up, avoid the intensification to arouse the protection too fast, be unfavorable for the system operation. Through setting up the target temperature, realize the regulation to air conditioner operating parameter, can keep indoor temperature steady, improve user's comfort level.
In practical application, as shown in fig. 4, the method for controlling the temperature rise and sterilization of the air conditioner comprises the following steps:
in step S31, in response to the cleaning instruction, the temperature-raising sterilization mode is entered.
And step S32, closing the four-way valve, controlling the guide plate of the indoor unit to move upwards, and controlling the running frequency of the compressor and the opening of the throttling device to be fixed, so that the indoor heat exchanger is frosted.
Step S33, the compressor is stopped, timing is started, and the indoor fan is in the first preset time t1Internally maintained at a lower speed R1And (5) operating.
Step S34, the compressor stop time meets the second preset time t2And then, switching on the four-way valve, executing a temperature-raising program, and determining the rotating speed of the indoor fan according to the indoor environment temperature and the outdoor environment temperature.
Step S35, the operation of heating room temperature adjustment is carried out according to the indoor environment temperature TrAdjusting target temperature T of air conditionersAnd detecting the temperature T of the inner coil of the air conditionerp。
Step S36, when the temperature T of the internal coil pipe is lowerpLess than a third temperature threshold, according to Ts＝Tr+T1Correcting the target temperature; when the temperature T of the inner coil pipepGreater than or equal to the third temperature threshold, according to Ts＝Tr+T2Correcting the target temperature; wherein, T1Is greater than T2The numerical value of (c).
Step S37, whether or not a temperature increase end condition is satisfied; the warm-up end condition includes one or more of the following conditions: coil temperature T of indoor heat exchangerPAt a third preset time t3Of values continuously greater than the fourth temperature threshold T4; coil pipe temperature variation quantity delta T of indoor heat exchangerpAt a third predetermined time t3The value is continuously smaller than a first set variation quantity delta T; the continuous running time of the compressor is more than the fourth preset time t4. When the end condition is satisfied, the flow proceeds to step S38, otherwise the temperature raising operation is continued.
And step S38, determining whether the defrosting condition is met, and when the defrosting condition is met, entering the step S39 defrosting mode, otherwise entering the step S40.
Step S39, in the defrosting mode, the temperature of the outdoor heat exchanger is continuously increased, and when the defrosting sensor on the outdoor heat exchanger is in the sixth preset time t6Of a value continuously greater than or equal to the fifth temperature threshold T5When so, the defrost mode is ended.
And step S40, exiting the heating sterilization cleaning mode and controlling the air conditioner to return to the working mode before frost condensation.
Wherein, in step S34, determining the rotation speed of the indoor fan according to the indoor environment temperature and the outdoor environment temperature includes: acquiring indoor ambient temperature and outdoor ambient temperature; acquiring a first critical value and a second critical value of a temperature interval in which the indoor environment temperature is positioned according to the indoor environment temperature, and acquiring a third critical value and a fourth critical value of the temperature interval in which the outdoor environment temperature is positioned according to the outdoor environment temperature; determining the rotating speed of the indoor fan according to the indoor environment temperature, the outdoor environment temperature, the first critical value, the second critical value, the third critical value and the fourth critical value; wherein the first critical value is lower than the second critical value, and the third critical value is lower than the fourth critical value.
Determining a temperature interval corresponding to the indoor environment temperature value according to a preset indoor environment temperature interval; the temperature interval has two critical values, wherein the first critical value and the second critical value refer to the minimum value and the maximum value within the temperature interval. Similarly, according to a preset outdoor environment temperature interval, determining a temperature interval corresponding to the outdoor environment temperature value; the third critical value and the fourth critical value are respectively the minimum value and the maximum value of the temperature interval. The air conditioner is internally preset with a first corresponding relation between the indoor environment temperature, the outdoor environment temperature and the indoor fan rotating speed, and the numerical value of the indoor fan rotating speed determined by the indoor environment temperature and the outdoor environment temperature after fitting the indoor fan rotating speed determined by the indoor environment temperature and the indoor fan rotating speed determined by the outdoor environment temperature is carried out according to the experimental data of a typical working condition in a research and development stage.
Optionally, the indoor fan speed is determined by:
wherein R is the rotating speed of the indoor fan, TaoIs the outdoor ambient temperature, TrIs the indoor ambient temperature, Δ TaoIs the difference value between the first critical value and the second critical value; delta TrIs the difference value between the third critical value and the fourth critical value; a is the rotating speed of the indoor fan corresponding to the first critical value and the third critical value in the first preset relation;b is the rotating speed of the indoor fan corresponding to the second critical value and the third critical value in the first preset relation; c is the rotating speed of the indoor fan corresponding to the second critical value and the fourth critical value in the first preset relation; and D is the rotating speed of the indoor fan corresponding to the first critical value and the fourth critical value in the first preset relation. Note that, in the calculation of expression (5), an algebraic evaluation between numerical values is performed without considering unit conversion.
Referring to fig. 5, an apparatus for controlling temperature rise sterilization of an air conditioner according to an embodiment of the present disclosure includes a frost control module 51 and a temperature rise control module 52. The frost control module 51 is configured to perform frost condensation on the indoor heat exchanger in response to the cleaning instruction; the temperature raising control module 52 is configured to raise the temperature of the indoor heat exchanger to above the set temperature for defrosting and sterilizing after the defrosting condition is satisfied, and set the target temperature of the air conditioner according to the indoor ambient temperature.
By adopting the device for controlling the temperature rise and sterilization of the air conditioner, which is provided by the embodiment of the disclosure, the temperature rise process is executed after the frost condensation process, on one hand, the frost layer generated in the frost condensation process is peeled off, and on the other hand, the sterilization and cleaning of the heat exchanger are realized. In the process of heating up, according to the real-time target temperature who sets up the air conditioner of indoor ambient temperature for in the rapid heating up process of indoor heat exchanger, through the target temperature who adjusts the air conditioner, adjust according to the target temperature with other functional units that make the air conditioner, avoid producing great temperature fluctuation because of the rapid heating up of heat exchanger, keep indoor temperature steady, improve user's use comfort.
Optionally, the device for controlling the temperature rise and sterilization of the air conditioner further comprises an operation control module. The operation control module is configured to determine corresponding operation parameters according to the target temperature and control the air conditioner to operate according to the operation parameters; wherein the operating parameters include one or more of an outdoor fan speed, an indoor fan speed, and a compressor frequency of the air conditioner.
Optionally, the apparatus for controlling temperature rise and sterilization of an air conditioner further comprises a defrosting control module. The defrosting control module is configured to execute defrosting of the outdoor heat exchanger when a defrosting condition is satisfied in a case where a temperature rise end condition is satisfied; otherwise, the heating sterilization cleaning mode is exited, and the air conditioner is controlled to recover to the working mode before frost condensation.
As shown in fig. 6, an apparatus for controlling temperature rise 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 heating 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 disclosed embodiments provide 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 perform the above-described method for controlling warm-up 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 for example only and are not limiting upon 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 only one type of logical functional division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be 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 (5)
1. A method for controlling heating sterilization of an air conditioner is characterized by comprising the following steps:
in response to a cleaning instruction, carrying out frost condensation on the indoor heat exchanger;
after the defrosting condition is met, the temperature of the indoor heat exchanger is raised to be higher than the set temperature for defrosting and sterilizing, and the target temperature of the air conditioner is set according to the indoor environment temperature;
wherein the higher the indoor ambient temperature of the air conditioner is, the higher the target temperature of the air conditioner is;
the target temperature of the air conditioner is determined according to the following manner:
TS=a×Tr+k
wherein, TsIs a target temperature, T, of the air conditionerrThe indoor environment temperature is determined, k is a correction parameter, and a is a weighted value greater than 0;
the value of the weighted value a is related to the change speed of the indoor temperature, and the faster the change speed of the indoor environment temperature is, the smaller the value of the weighted value a is;
the correction parameter is determined according to the temperature of an inner coil of the air conditioner;
under the condition that the temperature of the inner coil is less than or equal to a first threshold value, the higher the temperature of the inner coil is, the smaller the value of the correction parameter is;
under the condition that the temperature of the inner coil is higher than a first threshold value, the correction parameter is determined according to the target temperature of the inner coil;
the first threshold value is used for representing a value less than or equal to a set temperature.
2. The method of claim 1, wherein determining the correction parameter as a function of the inner coil temperature comprises:
determining a temperature interval in which the temperature of the inner coil is;
and determining the correction parameters corresponding to the temperature intervals according to a preset corresponding relation.
3. The method of claim 1 or 2, further comprising:
determining corresponding operating parameters according to the target temperature;
controlling the air conditioner to operate according to the operation parameters;
wherein the operation parameters comprise one or more of the rotating speed of an outdoor fan of the air conditioner, the frequency of a compressor and the opening degree of a throttling device.
4. An apparatus for controlling temperature-rise 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 temperature-rise sterilization of an air conditioner according to any one of claims 1 to 3 when executing the program instructions.
5. An air conditioner, characterized in that, it comprises the device for controlling the heating sterilization of the air conditioner according to claim 4.
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| CN114234402B (en) * | 2021-11-12 | 2023-07-18 | 青岛海尔空调器有限总公司 | Method and device for sterilizing air conditioner of sterilization cabin and air conditioner of sterilization cabin |
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| CA2663429A1 (en) * | 2008-04-21 | 2009-10-21 | Joseph J. Bartmann | Window condensation control |
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