CN113915733B - 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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- CN113915733B CN113915733B CN202111131417.8A CN202111131417A CN113915733B CN 113915733 B CN113915733 B CN 113915733B CN 202111131417 A CN202111131417 A CN 202111131417A CN 113915733 B CN113915733 B CN 113915733B
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/873—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The application relates to the technical field of refrigeration and discloses a control method for defrosting an air conditioner, which comprises the following steps: under the condition that defrosting operation of the outdoor unit needs to be started, an electric heating device of the indoor unit of the air conditioner is started to heat the indoor; starting defrosting operation of the outdoor unit when the indoor temperature reaches the first set temperature T1; wherein T1> T0, T0 is the indoor target temperature set by the user. The indoor temperature is increased before defrosting, so that the indoor temperature is reduced during defrosting, but the difference between the reduced temperature and the indoor temperature before defrosting is reduced. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved. The application also discloses a control device for defrosting the air conditioner and the air conditioner.
Description
Technical Field
The present application relates to the field of refrigeration technologies, and for example, to a control method and a control device for defrosting an air conditioner, and an air conditioner.
Background
In the air conditioning heating mode operation process, the outdoor heat exchanger of the outdoor unit plays a role of an evaporator for absorbing heat from the outdoor environment, and is affected by the temperature and humidity of the outdoor environment, more frost is easily condensed on the outdoor heat exchanger, and when the frost is condensed to a certain thickness, the heating capacity of the air conditioner is lower and lower, so that in order to ensure the heating effect, excessive condensation of the frost is avoided, and defrosting of the outdoor heat exchanger is necessary.
At present, the outdoor unit is defrosted by adopting a reverse circulation defrosting method, and a four-way reversing valve is used to change the flow direction of a refrigerant and convert a heating process into a refrigerating process. During defrost, superheated refrigerant vapor discharged from the compressor is fed into the outdoor coil for defrosting. When defrosting is completed, the heat pump operates in reverse again, and heat supply is restarted. In the defrosting process, in order to avoid blowing cold air, the indoor fan stops running.
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 existing defrosting method, not only is the indoor fan stopped, but also the indoor heat exchanger is made to perform refrigeration operation, so that the indoor temperature is obviously reduced, and the user experience is affected.
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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.
The embodiment of the disclosure provides an air conditioner defrosting control method, an air conditioner defrosting control system device and an air conditioner, which are used for reducing the indoor temperature reduction range and improving the user experience in the defrosting process of an outdoor unit of the air conditioner.
In some embodiments, the control method for defrosting an air conditioner includes: under the condition that defrosting operation of the outdoor unit needs to be started, an electric heating device of the indoor unit of the air conditioner is started to heat the indoor; starting defrosting operation of the outdoor unit when the indoor temperature reaches the first set temperature T1; wherein T1> T0, T0 is the initial indoor temperature; the first set temperature t1=t0+n; wherein N is a set value and can be adjusted according to indoor temperature change; adjusting N according to indoor temperature variation, comprising: under the condition that T0 is less than or equal to Tr1, the N value is unchanged; in the case where T0> Tr1, the N value increases by 1; where T0 is the initial indoor temperature, tr1 is the indoor temperature after defrosting is completed.
In some embodiments, the control device for defrosting an air conditioner includes: the air conditioner defrosting control device comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the control method for air conditioner defrosting when the program instructions are executed.
In some embodiments, the air conditioner includes:
an electric heating device configured to heat an indoor environment in a controlled operation;
a defrosting sensor configured to detect a defrosting temperature Tdef of the outdoor unit;
a temperature sensor configured to detect an indoor temperature Tr; and, a step of, in the first embodiment,
the control device for defrosting an air conditioner, wherein the processor is electrically connected with the electric heating device, the defrosting sensor and the temperature sensor.
The control method for air conditioner defrosting, the control device for air conditioner defrosting and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects: the indoor temperature is increased before defrosting, so that the indoor temperature is reduced during defrosting, but the difference between the reduced temperature and the indoor temperature before defrosting is reduced. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling 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 and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:
fig. 1 is a schematic diagram of a control method for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another control method for defrosting an air conditioner provided in an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of another control method for defrosting an air conditioner provided by an embodiment of the disclosure;
fig. 4 is a schematic diagram of another control method for defrosting an air conditioner provided in an embodiment of the present disclosure;
fig. 5 is a schematic diagram of another control method for defrosting an air conditioner provided in an embodiment of the present disclosure;
fig. 6 is a schematic diagram of a control device for defrosting an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.
The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.
The term "plurality" means two or more, unless otherwise indicated.
The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.
Referring to fig. 1, an embodiment of the present disclosure provides a control method for defrosting an air conditioner, including:
s101, when the defrosting operation of the outdoor unit needs to be started, the air conditioner starts the electric heating device of the indoor unit of the air conditioner to heat the indoor.
S102, when the indoor temperature reaches the first set temperature T1, the air conditioner starts a defrosting operation of the outdoor unit.
Wherein T1> T0, T0 is the initial indoor temperature.
By adopting the control method for defrosting the air conditioner, the following technical effects can be achieved: the indoor temperature is increased before defrosting, so that the difference between the reduced temperature and the indoor temperature before defrosting is reduced although the indoor temperature is still reduced during defrosting. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved.
As shown in fig. 2, an embodiment of the present disclosure provides another control method for defrosting an air conditioner, including:
s200, in normal heating operation of the air conditioner.
S201, the air conditioner judges whether Tdef is less than or equal to T2.
If Tdef is less than or equal to T2, S202 is executed, and the air conditioner starts the electric heating device.
If Tdef is not less than or equal to T2, S200 is executed, and the air conditioner continues to operate.
S203, when the indoor temperature reaches the first set temperature T1, the air conditioner starts a defrosting operation of the outdoor unit.
Wherein Tdef is defrosting temperature, T2 is second settlement temperature, and the value of T2 is confirmed according to outdoor temperature Tao.
By adopting the control method for defrosting the air conditioner, the following technical effects can be achieved: the indoor temperature is increased before defrosting, so that the difference between the reduced temperature and the indoor temperature before defrosting is reduced although the indoor temperature is still reduced during defrosting. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved. Further, an appropriate defrosting timing can be selected according to the variation in defrosting temperature.
Alternatively, in the case where the defrosting temperature Tdef is less than or equal to T2 and the duration is greater than or equal to 5 minutes, the air conditioner activates the electric heating device. In this way, it is possible to avoid defrosting start caused by temperature fluctuation in a short time.
Alternatively, t2=a±m. Wherein, under the condition that Tao is greater than or equal to a1, a=b1; in the case where a2 is equal to or less than Tao < a1, a=α×tao-p. In the case where a3 is equal to or less than Tao < a2, a=β×tao-q. In the case of Tao < a3, a=b2. Wherein Tao is an outdoor temperature; m is a correction value smaller than 0.5 and larger than 0. a1 A2, a3 are both reference values of outdoor temperature, and a1>0 ℃ to a2> a 3. b1 B2 is a reference value for the second set temperature T2, and b2< b1<0 ℃. α, β, p, q are set values, and 0.5< β < α <1,8< p < q <10. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely, and m is the error that exists in the actual operation in-process.
Alternatively, the value range of a1 is (0, 6). More specifically, a1=3, 4, or 5. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely.
Alternatively, the value range of a2 is [ -10, -5). More specifically, a2= -6, -7 or-8. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely.
Optionally, the value range of a3 is [ -20, -10). More specifically, a3= -13, -15 or-17. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely.
Optionally, b1 has a value in the range of [ -10, -5). More specifically, b1= -6, -7 or-8. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely.
Optionally, b2 is a value in the range of [ -25, -15). More specifically, b2= -18, -20 or-22. Like this, can adjust second settlement temperature T2 according to different outdoor temperatures, T2 is too high can lead to defrosting too frequently, and T2 is too low can lead to defrosting untimely.
Alternatively, the value range of α is (0.5, 1). More specifically, α=0.7, 0.8 or 0.9. In this way, the second set temperature can be calculated from the actual outdoor temperature so that the second set temperature is within a reasonable range.
Alternatively, β has a value in the range of (0.5, 1). More specifically, β=0.6, 0.7, or 0.8. In this way, the second set temperature can be calculated from the actual outdoor temperature so that the second set temperature is within a reasonable range.
Optionally, the value range of p is (8, 10). More specifically, p=8.5, 9 or 9.5. In this way, the second set temperature can be calculated from the actual outdoor temperature so that the second set temperature is within a reasonable range.
Optionally, q is in the range of (8, 10). More specifically, q=8.5, 9 or 9.5. In this way, the second set temperature can be calculated from the actual outdoor temperature so that the second set temperature is within a reasonable range.
Alternatively, the first set temperature t1=t0+n; wherein N is a set value and can be adjusted according to the change of the indoor temperature. In this way, the value of N can be adjusted according to the actual operating conditions.
As shown in fig. 3, an embodiment of the present disclosure provides another control method for defrosting an air conditioner, including:
s301, the temperature sensor detects an initial indoor temperature T0.
S302, when the defrosting operation of the outdoor unit needs to be started, the air conditioner starts an electric heating device of the indoor unit of the air conditioner to heat the indoor.
S303, when the indoor temperature reaches the first set temperature T1, the air conditioner starts a defrosting operation of the outdoor unit.
S304, defrosting is finished.
S305, the temperature sensor detects the post-defrost indoor temperature Tr1.
S306, the air conditioner judges whether the initial indoor temperature and the indoor temperature after defrosting meet T0 and less than or equal to Tr1.
If T0 is less than or equal to Tr1, the air conditioner continues to operate.
If not, S307 is executed, the N value is increased by 1, and the air conditioner continues to operate.
By adopting the control method for defrosting the air conditioner, the following technical effects can be achieved: the indoor temperature is increased before defrosting, so that the difference between the reduced temperature and the indoor temperature before defrosting is reduced although the indoor temperature is still reduced during defrosting. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved. Further, the N value can be corrected according to the actual operation condition so that the indoor temperature after defrosting is closer to the indoor temperature before defrosting.
Optionally, the initial value of the N value takes most of the user custom definition. Thus, the initial value of the N value is relatively close to the correction value, and the correction process of the N value can be simplified.
As shown in fig. 4, an embodiment of the present disclosure provides another control method for defrosting an air conditioner, including:
s401, when it is necessary to start the defrosting operation of the outdoor unit, the air conditioner starts the electric heating device of the indoor unit of the air conditioner to heat the indoor.
S402, the air conditioner adjusts the rotating speed of the indoor fan according to the defrosting temperature and the indoor temperature.
S403, when the indoor temperature reaches the first set temperature T1, the air conditioner starts a defrosting operation of the outdoor unit.
By adopting the control method for defrosting the air conditioner, the following technical effects can be achieved: the indoor temperature is increased before defrosting, so that the difference between the reduced temperature and the indoor temperature before defrosting is reduced although the indoor temperature is still reduced during defrosting. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved. Further, the speed of the indoor temperature rise can be controlled by adjusting the rotational speed of the indoor fan.
Optionally, starting the defrosting operation of the outdoor unit includes: and closing the indoor fan and starting defrosting. In this way, it is possible to prevent cool air from being blown into the room.
As shown in fig. 5, an embodiment of the present disclosure provides another control method for defrosting an air conditioner, including:
s501, when the defrosting operation of the outdoor unit needs to be started, the air conditioner starts the electric heating device of the indoor unit of the air conditioner to heat the indoor.
S502, the air conditioner judges whether the defrosting temperature and the indoor temperature meet a set relation.
If the set relationship is satisfied, S503 is executed to reduce the indoor fan rotation speed.
If the set relationship is not satisfied, S504 is executed to maintain the indoor fan rotation speed.
S505, when the indoor temperature reaches the first set temperature T1, the air conditioner starts a defrosting operation of the outdoor unit.
By adopting the control method for defrosting the air conditioner, the following technical effects can be achieved: the indoor temperature is increased before defrosting, so that the difference between the reduced temperature and the indoor temperature before defrosting is reduced although the indoor temperature is still reduced during defrosting. Therefore, in the defrosting process of the outdoor unit of the air conditioner, the reduction amplitude of the indoor temperature can be reduced, and the feeling of a user is improved. Further, the speed of the indoor fan is reduced, so that the indoor temperature rising speed is reduced, the time for the indoor temperature to reach the first set temperature is prolonged, and the interval time between the two defrosting processes is prevented from being too short.
Optionally, the air conditioner judges whether the defrosting temperature and the indoor temperature meet a set relationship, including: under the condition that the absolute temperature is equal to or less than the absolute temperature of T1-Tr-Tdef A B, the defrosting temperature and the indoor temperature meet the set relation. In the case of |t1-tr| -tdef| -a| > B, the defrosting temperature and the indoor temperature do not satisfy the set relationship.
Wherein, the value A is set according to the outdoor temperature, B is a set value smaller than 0.5 and larger than 0, and T1 is a first set temperature; tr is the indoor temperature and Tdef is the defrost temperature.
Thus, when the indoor temperature is about to reach the first set temperature and the defrosting temperature is close to the critical defrosting temperature, the rotating speed of the indoor fan is reduced by one step, the increasing speed of the indoor temperature is reduced, the time for increasing the indoor temperature to the first set temperature is prolonged, and the time between defrosting for two times is prevented from being too short.
As shown in connection with fig. 6, an embodiment of the present disclosure provides a control apparatus for defrosting an air conditioner, including a processor (processor) 600 and a memory (memory) 601. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 602 and a bus 603. The processor 600, the communication interface 102, and the memory 601 may communicate with each other via the bus 603. The communication interface 602 may be used for information transfer. The processor 600 may call logic instructions in the memory 601 to perform the control method for air conditioner defrosting of the above-described embodiment.
Further, the logic instructions in the memory 601 described above may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand alone product.
The memory 601 serves as a storage medium, and may be used to store a software program, a computer executable program, and 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 601, i.e., implements the control method for defrosting an air conditioner in the above-described embodiment.
The memory 601 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 601 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, comprising:
an electric heating device configured to heat an indoor environment in a controlled operation;
a defrosting sensor configured to detect a defrosting temperature Tdef of the outdoor unit;
a temperature sensor configured to detect an indoor temperature Tr; and, a step of, in the first embodiment,
the control device for defrosting an air conditioner, wherein the processor is electrically connected with the electric heating device, the defrosting sensor and the temperature sensor.
Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or a transitory storage medium.
The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (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, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.
Those of skill in the art will 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 depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The flowcharts 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 that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (8)
1. A control method for defrosting an air conditioner, comprising:
under the condition that defrosting operation of the outdoor unit needs to be started, an electric heating device of the indoor unit of the air conditioner is started to heat the indoor;
starting defrosting operation of the outdoor unit when the indoor temperature reaches the first set temperature T1;
wherein T1> T0, T0 is the initial indoor temperature;
the first set temperature t1=t0+n; wherein N is a set value and can be adjusted according to indoor temperature change;
adjusting N according to indoor temperature variation, comprising:
under the condition that T0 is less than or equal to Tr1, the N value is unchanged;
in the case where T0> Tr1, the N value increases by 1;
where T0 is the initial indoor temperature, tr1 is the indoor temperature after defrosting is completed.
2. The control method according to claim 1, wherein the step of starting the electric heating device of the indoor unit of the air conditioner in the case where the defrosting operation of the outdoor unit is required to be started, comprises:
starting the electric heating device under the condition that the defrosting temperature Tdef is less than or equal to T2;
wherein T2 is a second set temperature, and the value of T2 is determined according to the outdoor temperature Tao.
3. The control method according to claim 2, characterized in that t2=a±m;
in the case where Tao is not less than a1, a=b1;
in case a2 is less than or equal to Tao < a1, a=α×tao-p;
in the case of a3.ltoreq.tao < a2, a=β×tao-q;
in the case of Tao < a3, a=b2;
wherein Tao is an outdoor temperature; m is a correction value smaller than 0.5 and larger than 0; a1 A2, a3 are both reference values of outdoor temperature, and a1>0 ℃ to a2> a3;
b1 B2 is a reference value of a second set temperature T2, and b2< b1<0 ℃;
α, β, p, q are set values, and 0.5< β < α <1,8< p < q <10.
4. The control method according to claim 1, characterized by further comprising, in the case of starting the electric heating device:
and regulating the rotating speed of the indoor fan according to the defrosting temperature and the indoor temperature.
5. The control method according to claim 4, wherein the adjusting the rotational speed of the indoor fan according to the defrosting temperature and the indoor temperature includes:
judging whether the defrosting temperature and the indoor temperature meet a set relation or not; if yes, the rotating speed of the indoor fan is reduced; otherwise, the rotating speed of the indoor fan is kept unchanged.
6. The control method according to claim 5, wherein the determining whether the defrosting temperature and the indoor temperature satisfy a set relationship includes:
under the condition that the absolute temperature T1-Tr is less than or equal to B, the defrosting temperature and the indoor temperature meet the set relation;
in the case of |t1-tr| -tdef| -a| > B, the defrosting temperature and the indoor temperature do not satisfy the set relationship;
wherein, the A value is set according to the outdoor temperature, N is a set value and can be adjusted according to the indoor temperature change, and B is a set value smaller than 0.5 and larger than 0.
7. A control apparatus for air conditioner defrosting comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the control method for air conditioner defrosting according to any one of claims 1 to 6 when executing the program instructions.
8. An air conditioner, comprising:
an electric heating device configured to heat an indoor environment in a controlled operation;
a defrosting sensor configured to detect a defrosting temperature Tdef of the outdoor unit;
a temperature sensor configured to detect an indoor temperature Tr, and;
the control device for defrosting of an air conditioner as claimed in claim 7, wherein the processor is electrically connected with the electric heating device, the defrosting sensor and the temperature sensor.
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| KR100497159B1 (en) * | 2002-11-11 | 2005-06-28 | 삼성전자주식회사 | Air conditioner and method of defrosting thereof |
| CN1991255B (en) * | 2005-12-27 | 2010-05-12 | 松下电器产业株式会社 | Air conditioner and controlling method therefor |
| CN104930645B (en) * | 2015-05-29 | 2017-06-30 | 广东美的制冷设备有限公司 | Method and air-conditioning for controlling air-conditioner defrosting |
| CN109916000B (en) * | 2019-03-20 | 2020-04-28 | 珠海格力电器股份有限公司 | Defrosting control method and device for air conditioner, air conditioner and storage medium |
| CN110470022B (en) * | 2019-08-04 | 2021-12-21 | 重庆海尔空调器有限公司 | Control method and device for defrosting of air conditioner and air conditioner |
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Effective date of registration: 20221103 Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: QINGDAO HAIER CENTRAL AIR CONDITIONER Co.,Ltd. Address before: Room 229, management committee of Sino German ecological park, 2877 Tuanjie Road, Huangdao District, Qingdao, Shandong 266000 Applicant before: QINGDAO HAIER CENTRAL AIR CONDITIONER Co.,Ltd. |
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