CN113685969B - Method and device for controlling defrosting of air conditioner and air conditioner - Google Patents
Method and device for controlling defrosting of air conditioner and air conditioner Download PDFInfo
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- CN113685969B CN113685969B CN202110845029.XA CN202110845029A CN113685969B CN 113685969 B CN113685969 B CN 113685969B CN 202110845029 A CN202110845029 A CN 202110845029A CN 113685969 B CN113685969 B CN 113685969B
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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
- F24F11/70—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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2115—Temperatures of a compressor or the drive means therefor
- F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The application relates to the technical field of intelligent household appliance control, and discloses a method for controlling defrosting of an air conditioner, which comprises the following steps: under the condition of the defrosting instruction of the air conditioner, controlling the electric heating device to be started, and controlling an indoor fan to operate at a preset rotating speed; acquiring the exhaust temperature of a compressor or the temperature at the outlet of an outdoor unit condenser; and controlling the switch of the electric heating device according to the exhaust temperature or the temperature at the outlet of the condenser. The method can provide heat for the interior of the indoor unit by opening the electric heating device, and the evaporator of the indoor unit performs heat exchange to improve the exhaust temperature of the compressor; the switch of the electric heating device can be controlled through the exhaust temperature or the temperature at the outlet of the condenser, the exhaust temperature of the compressor is adjusted, and the defrosting time is further improved. The application also discloses a device and air conditioner for controlling the defrosting of air conditioner.
Description
Technical Field
The application relates to the technical field of intelligent household appliance control, in particular to a method and a device for controlling defrosting of an air conditioner and the air conditioner.
Background
At present, when an air conditioner operates in a heating mode at low outdoor temperature, a periodic defrosting process occurs. During defrosting, the indoor fan and the outdoor fan need to be turned off, and meanwhile, the air conditioner runs a refrigeration mode to completely melt frost of the outdoor unit. In addition, in areas with more wind and snow in winter, the outdoor part of the air conditioner can be covered by snow, so that the defrosting time of the air conditioner is prolonged, and the heating effect of the air conditioner is influenced.
In the related art, the defrosting time is shortened by controlling the operation frequency of the compressor, the opening degree of the electronic expansion valve, and the like.
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:
when the air conditioner is defrosted, the exhaust temperature is slowly increased and cannot be adjusted, so that the defrosting time is difficult to be effectively improved.
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 defrosting of an air conditioner and the air conditioner, so that the exhaust temperature of the air conditioner during defrosting is increased, and the defrosting duration is further improved.
In some embodiments, the method comprises: under the condition of the defrosting instruction of the air conditioner, controlling the electric heating device to be started, and controlling an indoor fan to operate at a preset rotating speed; acquiring the exhaust temperature of a compressor or the temperature at the outlet of an outdoor unit condenser; and controlling the switch of the electric heating device according to the exhaust temperature or the temperature at the outlet of the condenser.
In some embodiments, the apparatus comprises: a processor and a memory storing program instructions, the processor being configured to, upon execution of the program instructions, perform the above-described method for controlling defrosting of an air conditioner.
In some embodiments, the air conditioner includes: the device for controlling defrosting of the air conditioner is described above.
The method for controlling defrosting of the air conditioner, the device for controlling defrosting of the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
in the embodiment of the disclosure, in the defrosting process of the air conditioner, the electric heating device is controlled to be started, and the indoor fan is controlled to operate at a preset rotating speed; controlling the switch of the electric heating device according to the exhaust temperature or the temperature at the outlet of the condenser; therefore, when defrosting is carried out, heat can be provided for the interior of the indoor unit by opening the electric heating device, and the evaporator of the indoor unit carries out heat exchange to improve the exhaust temperature of the compressor; the switch of the electric heating device can be controlled through the exhaust temperature or the temperature at the outlet of the condenser, the exhaust temperature of the compressor is adjusted, and the defrosting duration is further 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 diagram of a method for controlling defrosting of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another method for controlling defrosting of an air conditioner provided by an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an apparatus for controlling defrosting of an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and claims of the embodiments of the disclosure and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
In practical application, the air conditioner comprises an electric heating device arranged in an indoor unit, and when the air conditioner is defrosted, the electric heating device can be started according to requirements and is used for providing heat for defrosting of the outdoor unit. Specifically, the electric heating device may be disposed between an indoor unit evaporator and an indoor fan of the air conditioner, so that the indoor evaporator is facilitated to efficiently perform convection heat exchange during defrosting. In addition, it can be understood that when the air conditioner defrosts, the outdoor fan stops running, the four-way valve of the refrigeration system switches the direction to enter a defrosting mode, and the compressor operates in a frequency reduction mode.
Referring to fig. 1, an embodiment of the present disclosure provides a method for controlling defrosting of an air conditioner, including:
and S01, the air conditioner processor controls the electric heating device to be started under the condition of the defrosting instruction of the air conditioner operation, and controls the indoor fan to operate at a preset rotating speed.
In the embodiment of the disclosure, when the air conditioner operates in the defrosting mode, the air conditioner processor controls the electric heating device to be started, and the indoor fan operates at a preset rotating speed; here, the preset rotating speed can be in a range of 350r/min to 1200r/min; the preset rotating speed can be determined according to the outdoor environment temperature; or, the preset rotating speed can be determined according to the defrosting time requirement; for example, the lower the outdoor environment temperature is, the higher the preset rotation speed is; or, if the defrosting time needs to be shortened, the preset rotating speed is higher. Therefore, the electric heating device provides heat for the indoor unit, and the evaporator of the indoor unit can absorb the heat to carry out heat exchange; meanwhile, the indoor fan rotates, so that the heat exchange efficiency of the evaporator is further improved; thereby increasing the discharge temperature of the outdoor unit compressor.
In some embodiments, when the air conditioner processor determines that the air conditioner needs to operate the defrosting mode, an instruction may be issued to control the air conditioner to operate the defrosting mode. Or, in the air conditioner heating mode, a preset condition can be set, and under the condition that the air conditioner meets the preset condition, a defrosting instruction is issued, and the air conditioner processor responds to the air conditioner defrosting instruction to control the air conditioner to operate in the defrosting mode. Here, the preset condition may be that the outdoor temperature is lower than a temperature threshold, or that the thickness of frost on the outdoor unit exceeds a thickness threshold is detected; for example, the temperature threshold may be-20 degrees celsius. Therefore, the air conditioner can be accurately controlled to respond to the defrosting instruction.
And S02, the air conditioner processor acquires the exhaust temperature of the compressor or the temperature at the outlet of the condenser of the outdoor unit.
In the embodiment of the disclosure, a first temperature sensor may be disposed at the air outlet of the compressor, or a second temperature sensor may be disposed on the copper pipe at the outlet of the condenser of the outdoor unit; for detecting the discharge temperature, or, the temperature at the outlet of the condenser; in this way, the discharge temperature of the compressor, or the temperature at the outlet of the condenser, can be accurately obtained.
And S03, controlling the on-off of the electric heating device by the air conditioner processor according to the exhaust temperature or the temperature at the outlet of the condenser.
In the embodiment of the disclosure, the electric heating device is controlled to be turned on or off according to the exhaust temperature or the temperature at the outlet of the condenser; specifically, the electric heating device may be controlled to be turned off when the exhaust gas temperature or the temperature at the outlet of the condenser is greater than a first temperature threshold; and when the exhaust temperature or the temperature at the outlet of the condenser is less than or equal to a second temperature threshold value, controlling the electric heating device to be started. Alternatively, the electrical heating means may be controlled in accordance with the rate of change of temperature; for example, when the temperature change rate is fast, the electric heating device is turned off; when the temperature change rate is slower, the electric heating device is started, or in the case that the electric heating device is started, the current state of the electric heating device is maintained. Like this, through adjusting electric heater's switch, realize the regulation of compressor exhaust temperature, it is long when improving the defrosting, simultaneously, can guarantee the defrosting in-process, the stability of system operation avoids exhaust temperature too high.
By adopting the method for controlling the defrosting of the air conditioner, heat can be provided for the interior of the indoor unit by opening the electric heating device, and the evaporator of the indoor unit performs heat exchange to improve the exhaust temperature of the compressor; the switch of the electric heating device can be controlled through the exhaust temperature or the temperature at the outlet of the condenser, the exhaust temperature of the compressor is adjusted, and the defrosting duration is further improved.
Optionally, in step S03, the controlling, by the air conditioner processor, the on/off of the electric heating device according to the exhaust temperature includes:
if the exhaust temperature is greater than the first threshold, the switching of the electric heating device is controlled according to the rate of change of the exhaust temperature.
In the embodiment of the disclosure, the value range of the first threshold is 70-90 ℃, and the values can be 70 ℃, 80 ℃ and the like; when the exhaust temperature is less than or equal to a first threshold value, keeping the opening state of the electric heating device; therefore, the exhaust temperature does not exceed the first threshold value, the motor heat device is continuously started, the heat exchange of the evaporator is facilitated to defrost the outdoor unit, the exhaust temperature is not too high, the refrigeration system is not overloaded, and shutdown is caused, so that defrosting is influenced.
When the exhaust temperature is greater than the first threshold value, the on-off of the electric heating device can be controlled according to the change rate of the exhaust temperature; here, the change rate of the exhaust temperature refers to the temperature change condition within a set interval time; the value range of the preset interval time is 3-20 seconds; for example, if the exhaust temperature is detected every 10 seconds, the current exhaust temperature T2, the last exhaust temperature T1, and the change rate of the exhaust temperature are T2-T1/10. In this way, the rate of change of the exhaust gas temperature can be obtained. Further, when the change rate of the exhaust temperature is too fast, the electric heating device is controlled to be closed; when the change rate of the exhaust temperature is relatively slow, controlling the electric heating device to keep an opening state; or setting an allowable range of the change rate, controlling the electric heating device to be kept on when the change rate meets the allowable range, and controlling the electric heating device to be switched off when the change rate exceeds the allowable range; for example, the allowable range of the rate of change is 1 ℃/s to 15 ℃/s. Therefore, the switch of the electric heating device can be better controlled according to the exhaust temperature, so that the exhaust temperature is ensured to be in a proper temperature range, the requirement on the defrosting duration can be met, and the adverse effect caused by overhigh exhaust temperature is avoided.
Optionally, the air conditioner processor controls the on/off of the electric heating device according to the change rate of the exhaust temperature, and comprises:
within the first time period, if the change rate of the exhaust temperature is greater than the preset rate, controlling the electric heating device to be closed; and if the change rate of the exhaust temperature is less than or equal to the preset rate, controlling the electric heating device to be kept on.
In the embodiment of the disclosure, the change rate condition of the exhaust temperature is judged in the first time period, so that instability caused by temperature fluctuation can be avoided; here, the first time period may be 3-5 minutes or other time period. The value range of the preset rate can be 5 ℃/s-15 ℃/s, for example, the value can be 15 ℃/s, and when the change rate of the exhaust temperature is continuously greater than the preset speed in the first time period, the electric heating device is controlled to be closed; and controlling the electric heating device to be kept on when the change rate of the exhaust temperature is continuously smaller than or equal to the preset rate. Therefore, the change rate of the exhaust temperature can more accurately reflect the change of the exhaust temperature, the electric heating device can be adjusted in time, the proper heat is provided for defrosting, and the phenomenon that the defrosting is influenced by overhigh exhaust temperature caused by control lag is avoided.
Optionally, in step S03, the air conditioner processor controls the switch of the electric heating device according to the temperature at the outlet of the condenser, including:
and if the temperature at the outlet of the condenser is greater than a second threshold value, controlling the electric heating device to operate for a second time period and then closing the electric heating device.
In the embodiment of the present disclosure, the switch of the electric heating device may be controlled according to the temperature at the outlet of the condenser. Here, the second threshold value ranges from 0 ℃ to 5 ℃. Specifically, when the temperature at the outlet of the condenser is lower, the electric heating device is controlled to be started to provide heat energy for heat exchange of the evaporator of the indoor unit, so that the temperature at the outlet of the condenser is increased, the defrosting efficiency is improved, and the time is shortened. When the temperature at the outlet of the condenser is higher, the electric heating device can be controlled to operate for a second time period and then be closed; here, the second period of time may be half an hour, 20 minutes, or the like; therefore, the heat accumulation amount of the evaporator of the indoor unit is continuously accumulated, the defrosting requirement is met, and meanwhile, the electric heating device is adjusted, so that the exhaust temperature is adjusted.
Alternatively, if the temperature at the condenser outlet is less than or equal to the second threshold, the air conditioning processor maintains the current state of the electric heating device.
In the embodiment of the disclosure, the temperature at the outlet of the condenser is less than or equal to the second threshold, which indicates that the heat exchange efficiency of the evaporator is low, that is, the exchanged heat is not enough to improve the defrosting time of the outdoor unit.
Optionally, in step S01, the air conditioner processor controls the indoor fan to operate at a preset rotation speed, and the determination manner of the preset rotation speed includes:
the air conditioner processor acquires the outdoor environment temperature; and determining the preset rotating speed of the indoor fan according to the outdoor environment temperature.
In the embodiment of the disclosure, for obtaining the outdoor temperature, a temperature sensor may be arranged on the outdoor unit of the air conditioner, and is used for obtaining the temperature of the outdoor environment; or, the air conditioner processor may communicate with the smart appliance to obtain the current temperature of the outdoor environment, for example, the air conditioner may communicate with the smart speaker in voice to obtain the current weather information, and then obtain the current temperature of the outdoor environment.
Determining a preset rotating speed of an indoor fan according to the outdoor environment temperature; the corresponding relation between the outdoor temperature and the target rotating speed of the indoor fan can be preset, and the target rotating speed corresponding to the current outdoor temperature is inquired according to the preset corresponding relation, so that the target rotating speed of the indoor fan is determined. For example, a temperature threshold may be set, and when the outdoor temperature is greater than the temperature threshold, the target rotation speed of the indoor fan is the first rotation speed; and when the outdoor temperature is less than or equal to the temperature threshold value, the target rotating speed of the indoor fan is the second rotating speed. Like this, can be according to outdoor ambient temperature, reasonable setting indoor fan's rotational speed to supplementary electric heater unit improves the heat exchange efficiency of indoor set evaporimeter, and it is long when improving the defrosting.
Optionally, the determining, by the air conditioning processor, the preset rotation speed of the indoor fan according to the outdoor ambient temperature includes: the lower the outdoor ambient temperature, the higher the preset rotational speed of the indoor fan.
In the embodiment of the disclosure, the lower the outdoor environment temperature is, the more heat is required for defrosting of the outdoor unit of the air conditioner, and the indoor unit evaporator is required to perform heat exchange more effectively to absorb heat; therefore, the preset rotating speed of the indoor fan is increased, the convection between the evaporator of the indoor unit and the electric heating device can be increased, the heat exchange efficiency is improved, and the defrosting of the outdoor unit is realized. Specifically, the preset rotating speed range of the indoor fan is 350 r/min-1200 r/min, the preset rotating speed can be divided into multiple gears, and each gear of the rotating speed corresponds to different outdoor temperature environments; for example, the highest gear rotation speed may correspond to the outdoor environment temperature being less than-15 ℃, that is, the outdoor temperature being less than-15 ℃, and the preset rotation speed of the indoor fan being the highest gear rotation speed.
In some embodiments, the indoor fan can be controlled to rotate reversely, or the forward rotation and the reverse rotation are alternately performed; this contributes to further increase in the flow of the indoor unit air and to improvement in the heat exchange efficiency of the evaporator.
Referring to fig. 2, another method for controlling defrosting of an air conditioner according to an embodiment of the present disclosure includes:
and S01, the air conditioner processor controls the electric heating device to be started under the condition of the defrosting instruction of the air conditioner operation, and controls the indoor fan to operate at a preset rotating speed.
And S02, the air conditioner processor acquires the exhaust temperature of the compressor or the temperature at the outlet of the condenser of the outdoor unit.
And S03, controlling the on-off of the electric heating device by the air conditioner processor according to the exhaust temperature or the temperature at the outlet of the condenser.
And S14, controlling the guide plate of the indoor unit to be closed by the air conditioner processor under the condition that the electric heating device is started.
In the embodiment of the disclosure, the electric heating device is turned on for the heat accumulated in the indoor unit so as to facilitate the heat exchange of the indoor evaporator, and therefore, in this case, the guide plate of the indoor unit is turned off, which helps the heat accumulated in the indoor unit and prevents the heat from flowing into the indoor space along with the rotation of the indoor fan.
In some embodiments, the state of the indoor unit guide plate may be corrected according to the discharge temperature of the compressor. For example, when the exhaust temperature is high, the guide plate of the indoor unit is controlled to be opened; when the exhaust temperature is lower, the closing state of the guide plate of the indoor unit is kept; therefore, the heat exchange effect of the evaporator of the indoor unit can be adjusted, and the exhaust temperature can be adjusted.
The embodiment of the disclosure provides a device for controlling defrosting of an air conditioner, which comprises a first control module, an acquisition module and a second control module. The first control module is configured to control the electric heating device to be started and control the indoor fan to operate at a preset rotating speed under the condition that the air conditioner operates a defrosting instruction; the acquisition module is configured to acquire the discharge temperature of the compressor, or the temperature at the outlet of the condenser of the outdoor unit; the second control module is configured to control switching of the electric heating device according to the exhaust gas temperature or the temperature at the outlet of the condenser.
By adopting the device for controlling the defrosting of the air conditioner, which is provided by the embodiment of the disclosure, heat is provided for the interior of the indoor unit by opening the electric heating device, and the evaporator of the indoor unit performs heat exchange to improve the exhaust temperature of the compressor; the switch of the electric heating device can be controlled through the exhaust temperature or the temperature at the outlet of the condenser, the exhaust temperature of the compressor is adjusted, and the defrosting duration is further improved.
As shown in fig. 3, an embodiment of the present disclosure provides an apparatus for controlling defrosting of an air conditioner, which 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 logic instructions in the memory 101 to perform the method for controlling defrosting of an air conditioner of 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 defrosting of an air conditioner in the above-described embodiment.
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 defrosting of the air conditioner.
Embodiments of the present disclosure provide a storage medium storing computer-executable instructions configured to perform the above-described method for controlling defrosting of an air conditioner.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of additional 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 disclosure, 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 simplicity of description, the specific working processes of the above-described systems, apparatuses, and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (8)
1. A method for controlling defrosting of an air conditioner is provided, wherein an electric heating device is arranged in an indoor unit of the air conditioner; characterized in that the method comprises:
under the condition of the defrosting instruction of the air conditioner, controlling the electric heating device to be started, and controlling an indoor fan to operate at a preset rotating speed;
acquiring the exhaust temperature of a compressor or the temperature at the outlet of an outdoor unit condenser;
controlling the switching of the electric heating device according to the exhaust temperature or the temperature at the outlet of the condenser, comprising: if the exhaust temperature is larger than a first threshold value, controlling the switch of the electric heating device according to the change rate of the exhaust temperature; if the exhaust temperature is less than or equal to a first threshold value, keeping the opening state of the electric heating device;
under the condition that the electric heating device is started, a guide plate of the indoor unit is controlled to be closed, and the state of the guide plate is corrected according to the exhaust temperature; the method specifically comprises the following steps: when the exhaust temperature is high, the guide plate is controlled to be opened; and controlling the guide plate to keep a closed state when the exhaust temperature is low.
2. The method of claim 1, wherein said controlling the switching of said electric heating device based on the rate of change of said exhaust temperature comprises:
within a first time period, if the change rate of the exhaust temperature is greater than a preset rate, controlling the electric heating device to be closed;
and if the change rate of the exhaust temperature is less than or equal to the preset rate, controlling the electric heating device to be kept on.
3. The method of claim 1, wherein said controlling the switching of said electric heating device as a function of the temperature at the outlet of said condenser comprises:
and if the temperature at the outlet of the condenser is greater than a second threshold value, controlling the electric heating device to operate for a second time period and then to be closed.
4. The method of claim 3, wherein said controlling the switching of said electric heating device based on the temperature at the outlet of said condenser further comprises:
maintaining the current state of the electric heating device if the temperature at the condenser outlet is less than or equal to a second threshold.
5. The method according to any one of claims 1 to 4, wherein the preset rotation speed of the indoor fan is determined by:
acquiring the outdoor environment temperature;
and determining the preset rotating speed of the indoor fan according to the outdoor environment temperature.
6. The method of claim 5, wherein determining the preset rotational speed of the indoor fan based on the outdoor ambient temperature comprises:
the lower the outdoor environment temperature is, the higher the preset rotating speed of the indoor fan is.
7. An apparatus for controlling defrosting of an air conditioner, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the method for controlling defrosting of an air conditioner according to any one of claims 1 to 6 when executing the program instructions.
8. An air conditioner characterized by comprising the apparatus for controlling defrosting of an air conditioner according to claim 7.
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