CN112050374B - Control method and control device for defrosting of air conditioner and air conditioner - Google Patents
Control method and control device for defrosting of air conditioner and air conditioner Download PDFInfo
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- CN112050374B CN112050374B CN201910493888.XA CN201910493888A CN112050374B CN 112050374 B CN112050374 B CN 112050374B CN 201910493888 A CN201910493888 A CN 201910493888A CN 112050374 B CN112050374 B CN 112050374B
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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
- F24F11/42—Defrosting; Preventing freezing of outdoor 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
- 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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The application relates to a control method and a control device for defrosting of an air conditioner and the air conditioner. The control method comprises the steps of acquiring the temperatures of two or more indoor coils when the air conditioner operates in a heating mode; and controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures. The embodiment of the disclosure provides a method for defrosting judgment and control by combining with the temperature state change of an indoor coil pipe in the running process of an air conditioner, which can more accurately control the air conditioner to trigger and execute a defrosting process, and reduce the problems of false triggering, frequent triggering and the like of the defrosting process in the related technology.
Description
Technical Field
The present application relates to the field of air conditioner defrosting technologies, and for example, to a control method and a control device for air conditioner defrosting, and an air conditioner.
Background
Along with the improvement of living standard of people, air conditioning equipment has also gone into thousands of households, the use of domestic air conditioners and central air conditioners is more and more common, the requirement of users on the comfort level of the air conditioners is more and more high, the problems existing in the use process of the air conditioners are also gradually exposed, and one of the problems is the problem that an outdoor unit of the air conditioner is frosted and frozen when the air conditioner operates in severe cold climate. When the air conditioner operates in a low-temperature area or an area with large wind and snow, the condensed water flow on the outer surface of the condenser of the outdoor unit can drop on the base plate, the condenser and the base plate of the air conditioner can be frozen under the condition that the air conditioner operates for a long time, the condensed ice layer on the outdoor unit can obstruct the heat exchange between the internal refrigerant and the outdoor environment, the refrigerating efficiency of the air conditioner is reduced, in order to ensure the heating effect of the air conditioner, the air conditioner has to operate with increased power, and the extra consumption of electric energy and the use cost of a user are increased.
Therefore, some conventional air conditioners have a defrosting function to solve the problem of frost and ice formation of an outdoor unit of the air conditioner, for example, heating the outdoor unit by a heating device provided in the outdoor unit, or defrosting and melting ice in an outdoor heat exchanger by a high-temperature refrigerant discharged from a compressor. Here, before the air conditioner starts the defrosting function, the air conditioner generally determines whether a temperature condition in which frost is easily condensed has been reached by combining the temperature of the external coil detected by the outdoor sensor with the frost point temperature, and then determines whether the defrosting function is started.
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: the air conditioner generally uses the outdoor environment temperature compared with the frost point temperature as the judgment condition for judging whether the air conditioner needs defrosting or not; the factors influencing the frosting degree of the outdoor unit of the air conditioner not only comprise external environment factors, but also comprise the influence factors of the self state of the air conditioner; therefore, under the partial conditions that the variation of parameters such as the outdoor environment temperature and the like before and after the air conditioner defrosts is small, the working states of all parts of the air conditioner can also change after the air conditioner defrosts at each time, if whether the air conditioner needs defrosting is judged and controlled in the mode, a large error exists between the working states and the actual frosting state of the air conditioner, the problems that the defrosting function is triggered by mistake, the defrosting function is triggered frequently and the like are easily caused, and therefore the requirement that the air conditioner accurately controls and triggers the defrosting function cannot be met.
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 control method and a control device for defrosting of an air conditioner and the air conditioner, so as to solve the technical problems of false triggering, frequent triggering and the like in the related technology of triggering a defrosting function by the air conditioner.
In some embodiments, the control method comprises:
when the air conditioner runs in a heating mode, acquiring the temperatures of two or more indoor coils;
and controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures.
In some embodiments, the control device comprises:
the first acquisition module is configured to acquire two or more indoor coil temperatures when the air conditioner operates in a heating mode;
a defrost control module configured to control the air conditioner to enter a defrost mode based on a maximum and a minimum of the two or more indoor coil temperatures.
In some embodiments, the air conditioner includes the control device described above.
Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:
compared with a control mode of defrosting judgment based on outdoor environment temperature in the related technology, the control method for defrosting judgment and control in combination with temperature state change of the indoor coil in the running process of the air conditioner can more accurately control the air conditioner to trigger and execute a defrosting process, and reduce the problems of false triggering, frequent triggering and the like of the defrosting process in the related technology.
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 flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a control method for defrosting an air conditioner according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a control device for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of an electronic device provided in 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.
Fig. 1 is a schematic flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure.
As shown in fig. 1, an embodiment of the present disclosure provides a control method for defrosting an air conditioner, including:
s101, acquiring the temperatures of two or more indoor coils when an air conditioner operates in a heating mode;
generally, the problem of frost formation of an outdoor unit of an air conditioner mainly occurs in cold weather in winter, and at the moment, a user generally sets the air conditioner to operate in a heating mode so as to heat and raise the temperature of an indoor environment by using the air conditioner; therefore, the control method for defrosting an air conditioner according to the embodiment of the present disclosure is a related control flow performed in the case of the air conditioner operation heating mode.
The indoor unit of the air conditioner is provided with a temperature sensor which can be used for detecting the real-time temperature of a coil pipe of the indoor unit; step S101, acquiring the real-time temperature of the coil detected by the temperature sensor, and taking the real-time temperature as the temperature of the indoor coil;
optionally, the two or more indoor coil temperatures comprise: the sensed indoor coil temperature over two or more sensing periods.
Here, the air conditioner can detect the indoor coil temperature of the indoor unit through the temperature sensor in a plurality of continuous periods, such as 5 minutes for one detection period or 10 minutes for one detection period, etc.; in each detection period, two or more indoor coil temperatures can be detected, for example, in a detection period of 5 minutes, the indoor coil temperature is detected every 1 minute, and data of 5 indoor coil temperatures are obtained.
And S102, controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the temperatures of the two or more indoor coils.
Optionally, the maximum of the two or more indoor coil temperatures comprises: maximum indoor coil temperature t of current detection period max And maximum indoor coil temperature T for all detection periods max ；
For example, if the current detection period is the nth detection period, the maximum value t of the indoor coil temperature of the current detection period is max The maximum value of the indoor coil temperatures in two or more than two detection periods in the Nth detection period;
maximum indoor coil temperature T for all test periods max The maximum value t of all indoor coil temperatures in the 1 st to Nth detection periods max Maximum value of (1); if N is 3, the maximum value t of the indoor coil temperature in the 1 st detection period max1 At 45 deg.C, the maximum value t of the indoor coil temperature in the 2 nd detection period max2 At 55 deg.C, maximum value t of indoor coil temperature in 3 rd detection period max3 At 47 ℃ allMaximum indoor coil temperature T of detection period max Is the maximum value t of the indoor coil temperature in the 2 nd detection period max2 ；
The minimum of the two or more indoor coil temperatures includes: minimum value t of indoor coil temperature of current detection period min 。
For example, if the current detection period is the nth detection period, the minimum value t of the indoor coil temperature of the current detection period is min Is the minimum of two or more indoor coil temperatures in the nth detection period.
Therefore, the control method for defrosting of the air conditioner, provided by the embodiment of the disclosure, can judge that the air conditioner enters the defrosting mode according to the maximum value and the minimum value of the temperatures of two or more indoor coils of the air conditioner in the heating mode, and compared with a control mode of judging defrosting based on the outdoor environment temperature in the related art, the embodiment of the disclosure provides a method for judging and controlling defrosting by combining the temperature state change of the indoor coils in the running process of the air conditioner, so that the air conditioner can be controlled to trigger and execute the defrosting process more accurately, and the problems of false triggering, frequent triggering and the like of the defrosting process in the related art are reduced.
In an alternative embodiment, the step S102 of controlling the air conditioner to enter the defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures includes:
when the first temperature difference DeltaT meets a first condition and the second temperature difference Deltat meets a second condition, controlling the air conditioner to enter a defrosting mode,
in the embodiment of the disclosure, the first temperature difference Δ T can reflect the difference between the maximum temperature that can be reached by the indoor coil and the maximum temperature that can be reached by the indoor coil in the whole operation period of the air conditioner, which is influenced by different frosting degrees of the outdoor unit in the current detection period; the second temperature difference delta t can reflect the temperature fluctuation condition of the indoor coil pipe in the period within the current detection period under the influence of different frosting degrees of the outdoor unit; therefore, the embodiment of the disclosure combines the influence of the frosting of the air conditioner on the two temperature fluctuations of the temperature of the indoor coil, and can more accurately control the air conditioner to enter the defrosting mode.
Alternatively, in another alternative embodiment, the step S102 of controlling the air conditioner to enter the defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures includes:
when the first temperature difference DeltaT meets the first condition, the second temperature difference Deltat meets the second condition, and the indoor environment temperature T room And when the third condition is met, controlling the air conditioner to enter a defrosting mode.
In the embodiment of the disclosure, the first temperature difference Δ T can reflect the difference between the maximum temperature that can be reached by the indoor coil and the maximum temperature that can be reached by the indoor coil in the whole operation period of the air conditioner, which is influenced by different frosting degrees of the outdoor unit, in the current detection period; the second temperature difference delta t can reflect the temperature fluctuation condition of the indoor coil pipe in the period, which is influenced by different frosting degrees of the outdoor unit in the current detection period; indoor ambient temperature t room The temperature influence of outdoor environment change on the indoor environment can be reflected, and the change condition of the outdoor environment which can influence the frosting degree of the air conditioner can also be reflected from the side surface; therefore, the embodiment of the disclosure combines the influence of the frosting of the air conditioner on the three temperature fluctuations of the indoor coil temperature and the indoor environment temperature, and can more accurately control the air conditioner to enter the defrosting mode.
In the two alternative embodiments described above, Δ T ═ T max -t max ；△t＝t max -t min 。
Optionally, the first condition includes: Δ T > T1, T1 being a first threshold; optionally, T1 is set to 10 ℃.
Optionally, the second condition includes: Δ T < T2, T2 being a second threshold; optionally, T2 is set to a value of 5 ℃.
Optionally, the third condition includes: t is t roommax -t room >T3, T3 is the third threshold, T roommax Is the maximum value of the indoor environment temperature t in the current detection period room Is the current indoor ambient temperature.
Optionally, T3 is set to 10 ℃.
Here, the air conditioner is further provided with another temperature sensor that can be used to detect a real-time temperature of the indoor environment as the indoor environment temperature.
Fig. 2 is a flowchart illustrating a control method for defrosting an air conditioner according to another embodiment of the present disclosure.
As shown in fig. 2, the flow steps of the control method for defrosting an air conditioner according to the embodiment of the present disclosure include:
s201, when the air conditioner operates in a heating mode, acquiring two or more indoor coil temperatures in a current detection period;
optionally, the temperature of the indoor coil is detected by a temperature sensor arranged at the coil of the indoor unit of the air conditioner;
s202, calling two or more indoor coil temperatures in other detection periods before the current detection period in historical data;
in the embodiment of the present disclosure, the air conditioner stores the indoor coil temperatures detected by the temperature sensor in different detection periods as historical data, so that the indoor coil temperature stored in the historical data may be called in step S202;
s203, determining the maximum value t of the indoor coil temperature in the current detection period max And maximum indoor coil temperature T for all detection periods max ；
S204, determining the minimum value t of the indoor coil temperature in the current detection period min ；
S205, calculating Δ T ═ T max -t max ，△t＝t max -t min ；
S206, judging that delta T is greater than T1 and delta T is less than T2, if yes, executing the step S207, and if not, ending the process;
s207, controlling the air conditioner to enter a defrosting mode;
in the embodiment of the present disclosure, the specific defrosting mode of the defrosting mode does not relate to the innovative point of the present application, and therefore is not described in detail;
s208, when the air conditioner meets the defrosting exit condition, controlling the air conditioner to exit the defrosting mode, and keeping the air conditioner in a standby or shutdown state with set interval duration;
optionally, the defrosting exit condition is that the defrosting duration of the air conditioner defrosting mode reaches a set duration, for example, the set duration is 10 minutes, and the like;
optionally, the set interval duration is 30 minutes;
and S209, controlling the air conditioner to enter a heating mode again.
In the embodiment of the present disclosure shown in fig. 2, after the defrosting mode of the air conditioner is completed, the air conditioner is forced to enter the heating mode again after a standby or shutdown setting interval, so that the defrosting water melted in the defrosting mode can be discharged from the outdoor unit for a sufficient time, the problem that the defrosting water is re-condensed on the outdoor unit due to the mode of entering the heating mode immediately after the defrosting of the air conditioner is completed is avoided, and the defrosting effect of the air conditioner can be effectively improved.
Fig. 3 is a schematic structural diagram of a control device for defrosting of an air conditioner according to an embodiment of the present disclosure.
As shown in fig. 3, an embodiment of the present disclosure also provides a control device for defrosting of an air conditioner, which is applicable to an air conditioner and enables the air conditioner to perform the control flow shown in the above embodiment; specifically, the control device 3 includes:
a first obtaining module 31 configured to obtain two or more indoor coil temperatures when the air conditioner operates in a heating mode;
and a defrost control module 32 configured to control the air conditioner to enter a defrost mode based on a maximum and a minimum of the two or more indoor coil temperatures.
In an alternative embodiment, the two or more indoor coil temperatures comprise: the sensed indoor coil temperature over two or more sensing periods.
In an alternative embodiment, the maximum of the two or more indoor coil temperatures comprises: maximum indoor coil temperature t of current detection period max And maximum indoor coil temperature T for all detection periods max (ii) a The minimum of the two or more indoor coil temperatures includes: minimum value t of indoor coil temperature of current detection period min 。
In an alternative embodiment, the defrost control module is configured to:
when the first temperature difference delta T meets a first condition and the second temperature difference delta T meets a second condition, controlling the air conditioner to enter a defrosting mode; alternatively, the first and second liquid crystal display panels may be,
when the first temperature difference DeltaT meets the first condition, the second temperature difference Deltat meets the second condition, and the indoor environment temperature T room When the third condition is met, controlling the air conditioner to enter a defrosting mode;
wherein Δ T ═ T max -t max ；△t＝t max -t min 。
In an alternative embodiment, the first condition comprises: Δ T > T1, T1 is a first threshold.
In an alternative embodiment, the second condition comprises: Δ T < T2, T2 is the second threshold.
In an alternative embodiment, the third condition comprises: t is t roommax -t room >T3, T3 is the third threshold, T roommax Is the maximum value of the ambient temperature in the chamber in the current detection period, t room Is the current indoor ambient temperature.
In an alternative embodiment, the control device 3 further comprises a shutdown control module configured to:
and after defrosting is finished, controlling the air conditioner to keep a standby or shutdown state for a set interval time, and entering a heating mode again.
The specific execution manner of the control flow executed by the control device to control the air conditioner in the present application may refer to the corresponding part of the foregoing embodiments of the control method, and is not described herein again.
The embodiment of the disclosure also provides an air conditioner, which comprises the control device provided in the previous embodiment.
The embodiment of the present disclosure also provides a computer-readable storage medium storing computer-executable instructions configured to execute the control method for defrosting an air conditioner provided in the above embodiment.
Embodiments of the present disclosure also provide a computer program product including a computer program stored on a computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform the control method for defrosting an air conditioner provided in the above-described embodiments.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
An embodiment of the present disclosure further provides an electronic device, a structure of which is shown in fig. 4, where the electronic device includes:
at least one processor (processor)400, one processor 400 being exemplified in fig. 4; and a memory (memory)401, and may also include a Communication Interface (Communication Interface)402 and a bus 403. The processor 400, the communication interface 402, and the memory 401 may communicate with each other through a bus 403. Communication interface 402 may be used for information transfer. The processor 400 may call logic instructions in the memory 401 to execute the control method for air conditioner defrosting provided in the above-described embodiment.
In addition, the logic instructions in the memory 401 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 401 is a computer-readable storage medium and can 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 400 executes functional applications and data processing by running software programs, instructions and modules stored in the memory 401, that is, implements the control method for defrosting an air conditioner in the above-described method embodiment.
The memory 401 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. Further, the memory 401 may include a high-speed random access memory, and may also include a nonvolatile memory.
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. The scope of the embodiments of the present disclosure includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, unless the meaning of the description changes, so long as all occurrences of the "first element" are renamed consistently and all occurrences of the "second element" are renamed consistently. The first and second elements are both elements, but may not be the same element. 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 additional identical elements in the process, method or apparatus comprising 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 technical 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 control 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. 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 control method for defrosting an air conditioner is characterized by comprising the following steps:
acquiring the temperatures of two or more indoor coils when the air conditioner operates in a heating mode;
controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures;
a maximum of the two or more indoor coil temperatures comprises: maximum indoor coil temperature t of current detection period max And maximum indoor coil temperature T for all detection periods max (ii) a The minimum of the two or more indoor coil temperatures comprises: minimum value t of indoor coil temperature of current detection period min ；
The controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures comprises:
when the first temperature difference delta T meets a first condition and the second temperature difference delta T meets a second condition, controlling the air conditioner to enter a defrosting mode; alternatively, the first and second electrodes may be,
when the first temperature difference DeltaT meets the first condition, the second temperature difference Deltat meets the second condition, and the indoor environment temperature T room When a third condition is met, controlling the air conditioner to enter a defrosting mode;
wherein, T ═ T max -t max ；△t＝t max -t min ；
The first condition includes: delta T>T1, T1 is the first threshold; the second condition includes: delta t<T2, T2 is the second threshold; the third condition includes: t is t roommax -t room >T3, T3 is the third threshold, T roommax Is the maximum value of the ambient temperature in the chamber in the current detection period, t room Is the current indoor ambient temperature.
2. The control method of claim 1, wherein the two or more indoor coil temperatures comprise: the sensed indoor coil temperature over two or more sensing periods.
3. The control method according to claim 1 or 2, characterized by further comprising:
and after defrosting is finished, controlling the air conditioner to keep a standby or shutdown state for a set interval time, and re-entering the heating mode.
4. A control device for defrosting an air conditioner, comprising:
the first acquisition module is configured to acquire two or more indoor coil temperatures when the air conditioner operates in a heating mode;
a defrost control module configured to control the air conditioner to enter a defrost mode based on a maximum and a minimum of the two or more indoor coil temperatures;
a maximum of the two or more indoor coil temperatures comprises: maximum indoor coil temperature t of current detection period max And maximum indoor coil temperature T for all detection periods max (ii) a A minimum of the two or more indoor coil temperatures comprises: minimum value t of indoor coil temperature of current detection period min ；
The controlling the air conditioner to enter a defrosting mode according to the maximum value and the minimum value of the two or more indoor coil temperatures comprises:
when the first temperature difference delta T meets a first condition and the second temperature difference delta T meets a second condition, controlling the air conditioner to enter a defrosting mode; alternatively, the first and second electrodes may be,
when the first temperature difference DeltaT meets a first condition, the second temperature difference Deltat meets a second condition, and the indoor environment temperature T room When a third condition is met, controlling the air conditioner to enter a defrosting mode;
wherein, T ═ T max -t max ；△t＝t max -t min ；
The first condition includes: delta T>T1, T1 is the first threshold; the second condition includes: delta t<T2, T2 is the second threshold; the third condition includes: t is t roommax -t room >T3, T3 is the third threshold, T roommax Is the maximum value of the ambient temperature in the chamber in the current detection period, t room Is the current indoor ambient temperature.
5. An air conditioner characterized by comprising the control device according to claim 4.
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