CN112050353B - 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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- CN112050353B CN112050353B CN201910491593.9A CN201910491593A CN112050353B CN 112050353 B CN112050353 B CN 112050353B CN 201910491593 A CN201910491593 A CN 201910491593A CN 112050353 B CN112050353 B CN 112050353B
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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
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- Air Conditioning Control Device (AREA)
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 following steps: acquiring outdoor environment parameters and operation parameters of a compressor; and selecting the started heating device according to the heating strategy according to the outdoor environment parameters and the operation parameters of the compressor, so that the water temperature in the water storage device meets the defrosting water temperature condition. According to the control method for defrosting of the air conditioner, the opened heating device is selected according to the outdoor environment parameters and the operation parameters of the compressor of the outdoor unit and the heating strategy, so that the water temperature in the water storage device can meet the preset defrosting water temperature condition, the spray water of the air conditioner in the process of executing the defrosting mode can always meet the water temperature requirement for achieving a better defrosting effect, and the problem that the defrosting effect is influenced due to the fact that the water temperature is uncontrollable due to the influence of the outdoor environment in the related technology is effectively solved.
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 for defrosting an outdoor unit of the air conditioner by spraying a liquid such as an antifreeze solution or water, for example, by heating the outdoor unit with a heating device provided in the outdoor unit, defrosting an outdoor heat exchanger with a high-temperature refrigerant discharged from a compressor, or defrosting the outdoor unit with a high-temperature refrigerant.
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:
for the air-conditioning products that adopt liquids such as spray water to defrost, often have the not good problem of defrosting effect when in actual application, the main reason is that the outdoor environment that influences the outdoor unit frost freezing not only can constitute the influence to the outdoor unit, can also influence the relevant device that stores and sprays above-mentioned liquid simultaneously, for example the defrosting water can freeze the phenomenon by the influence of temperature under the low temperature environmental condition, can not normally spray the operation when the air conditioner needs to defrost, therefore the air conditioner defrosting purpose that just can't realize.
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, and aims to solve the technical problem that an air conditioner product which is defrosted by liquid such as spray water is affected by outdoor environment in the practical application process to cause poor defrosting effect.
In some embodiments, the control method comprises:
acquiring outdoor environment parameters and operating parameters of a compressor;
and selecting the started heating device according to the heating strategy according to the outdoor environment parameters and the operation parameters of the compressor, so that the water temperature in the water storage device meets the defrosting water temperature condition.
In some embodiments, the control device comprises:
a first acquisition module configured to acquire an outdoor environmental parameter and an operation parameter of the compressor;
a heating control module configured to select an activated heating device according to a heating strategy based on the outdoor environmental parameter and an operating parameter of the compressor such that a water temperature within the water storage device satisfies a defrost water temperature condition.
In some embodiments, the air conditioner includes an outdoor unit and an outdoor defrosting device, the outdoor defrosting device includes a heating device, a water storage device and a spraying device; wherein the heating device at least comprises a solar heating device, an electric heating device and a heat storage device capable of storing heat of the compressor, and is arranged to controllably heat the water stored in the water storage device by one or more of the solar heating device, the electric heating device and the heat storage device; the spraying device is arranged to controllably spray the water in the water storage device to the outdoor heat exchanger of the outdoor unit; the air conditioner also comprises the control device.
Some technical solutions provided by the embodiments of the present disclosure can achieve the following technical effects:
according to the control method for defrosting of the air conditioner, the opened heating device is selected according to the outdoor environment parameters and the operation parameters of the compressor of the outdoor unit and the heating strategy, so that the water temperature in the water storage device can meet the preset defrosting water temperature condition, the water temperature requirement for achieving a better defrosting effect can be always met by the spray water of the air conditioner in the process of executing the defrosting mode, and the problem that the defrosting effect is influenced due to the fact that the water temperature is uncontrollable due to the influence of the outdoor environment in the related technology is effectively solved.
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 in the accompanying drawings, which correspond to the accompanying drawings and not in a limiting sense, in which elements having the same reference numeral designations represent like elements, and in which:
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.
The embodiment of the disclosure provides an air conditioner, which comprises an indoor unit, an outdoor unit and an outdoor defrosting device.
The indoor unit comprises an indoor evaporator, an indoor fan and other components, wherein the indoor evaporator is set to exchange heat with the indoor environment so as to cool the indoor environment when the air conditioner operates in a cooling mode or heat the indoor environment when the air conditioner operates in a heating mode.
The outdoor unit includes an outdoor heat exchanger, a compressor, etc., and the outdoor heat exchanger is configured to exchange heat with an outdoor environment to discharge heat absorbed by the indoor heat exchanger to the outdoor environment when the air conditioner operates in a cooling mode, or to absorb heat from the outdoor environment and to transfer the heat to the indoor environment by the indoor heat exchanger when the air conditioner operates in a heating mode.
When the air conditioner operates in winter severe cold weather, frost is easily condensed on the outdoor heat exchanger due to low temperature of the outdoor environment, and the condensed frost can block the heat exchange efficiency of the outdoor heat exchanger and the outdoor environment; aiming at the problem of frost condensation and formation of the outdoor heat exchanger, the outdoor defrosting device is set to be capable of defrosting the outdoor heat exchanger so as to reduce the amount of frost condensed on the outdoor heat exchanger and ensure the heating performance of the air conditioner in winter in severe cold weather.
In the embodiment of the disclosure, the outdoor defrosting device mainly comprises a heating device, a water storage device, a spraying device and the like; the water storage device is set to store water which can be used for defrosting, the heating device is set to controllably heat the water stored in the water storage device, and the spraying device is set to controllably spray the water in the water storage device to the outdoor heat exchanger of the outdoor unit, so that the frost on the outdoor heat exchanger is melted by utilizing the heat of hot water, and the purpose of defrosting and defrosting the outdoor unit is achieved.
In an alternative embodiment, the water storage means is a water storage tank having a water storage chamber defined therein in which water for defrosting can be stored; optionally, the outside parcel in water storage chamber has the heat preservation to utilize the heat exchange of the water of heat preservation separation water storage intracavity and external environment, alleviate the temperature influence of external environment to the water of water storage intracavity.
Optionally, the water storage device further comprises a heating water outlet pipeline, a heating water return pipeline and a defrosting water outlet pipeline which are respectively communicated with the water storage cavity;
the heating water outlet pipeline and the heating water return pipeline are respectively communicated with the heating device, so that the water storage cavity and the heating device form a circulating flow path for heating water, low-temperature water to be heated flows out of the heating water outlet pipeline to the heating device, the heating device heats the low-temperature water into high-temperature water, and then the high-temperature water flows back to the water storage cavity through the heating water return pipeline.
The heating water outlet pipeline is provided with a first water pump, and the first water pump is used for driving water to flow from the water storage cavity to the heating device along the heating water outlet pipeline; and a second water pump is arranged on the heating water return pipeline and used for driving water to flow back to the water storage cavity from the heating device along the heating water return pipeline.
The defrosting water outlet pipeline is communicated with the spraying device, and a third water pump is arranged on the defrosting pipeline and is used for driving water to flow to the spraying device from the water storage cavity along the defrosting water storage pipeline, so that the spraying device can spray hot water in the water storage cavity onto the outdoor heat exchanger of the outdoor unit.
Optionally, the heating device includes a solar heating device, which can convert the radiation energy of the sun into heat energy and use the converted heat energy to heat the low-temperature water delivered by the heating water outlet pipeline.
Here, solar heating device is mainly by parts such as absorber plate, apron and casing, and the space of holding absorber plate is injectd to casing inside, and the apron covers and establishes on a side of casing, and sunshine is on the absorber plate via the apron radiation, and the absorber plate can absorb solar radiation's energy and convert heat energy into.
The heat absorption plate is internally provided with a working medium flow path, two ports of the working medium flow path are respectively communicated with a heating water outlet pipeline and a heating water return pipeline, water conveyed by the heating water outlet pipeline is heated and heated in the process of flowing through the working medium flow path, and then flows back to the water storage cavity through the heating water return pipeline, so that heat energy converted by the heat absorption plate is transferred to circulating water.
Optionally, the heating device includes an electric heating device, which can convert electric energy into heat energy, and the converted heat energy is used to heat the low-temperature water delivered by the heating water outlet pipeline.
In one embodiment, the electric heating device comprises a resistance wire assembly and a power supply assembly, wherein the resistance wire assembly can be directly arranged in the water storage cavity, and after the resistance wire assembly is electrified, the resistance wire assembly can generate a large amount of heat for directly heating water in the water storage cavity; the power supply assembly is electrically connected with the resistance wire assembly, and the power supply assembly can be a battery or a power line and other parts which can be connected with an external power supply.
Here, the electric heating device is further provided with a power adjusting assembly, and the heating rate of the resistance wire assembly can be changed by changing the current or voltage supplied to the resistance wire assembly, so that the heating power of the electric heating device can be adjusted.
Alternatively, the heating device includes a heat storage device configured to store heat of a compressor of the outdoor unit.
The heat storage device comprises a heat conduction pipe which is arranged around the outer side of the compressor body, the heat conduction pipe can be in direct heat conduction contact with the compressor or in indirect heat conduction contact through fins and the like, and the heat generated by the compressor during working can be conducted to the heat conduction pipe, so that the heat of the heat conduction pipe is increased;
the heat conducting pipe is internally used as a working medium flow path, two ends of the heat conducting pipe are respectively communicated with the heating water outlet pipeline and the heating water return pipeline, water in the process of being conveyed by the heating water outlet pipeline is heated and heated in the process of flowing through the working medium flow path, and then the water flows back to the water storage cavity through the heating water return pipeline, so that heat energy converted by the heat absorbing plate is transferred to circulating water.
Optionally, the heating device includes an exhaust branch, two ends of the exhaust branch are respectively connected in parallel to an exhaust pipe of a compressor of the outdoor unit and a liquid outlet pipe of an indoor heat exchanger of the indoor unit in the heating mode, and the exhaust branch can heat water in the water storage device by using heat of a high-temperature refrigerant discharged from the compressor through an exhaust port.
At least part of pipelines of the exhaust branch are arranged in the water storage cavity and are made of heat conduction materials; the high temperature refrigerant discharged from the air outlet of the compressor flows partially along the original exhaust pipeline of the air conditioner, and flows partially along the exhaust branch and exchanges heat with the refrigerant in the water storage cavity when flowing through the partial pipelines, so that the heat of the high temperature refrigerant is utilized to heat the water in the water storage cavity.
In this embodiment, the air conditioner is further provided with two control valves, wherein the two control valves include a first control valve arranged in the exhaust pipe, and the first control valve can be used for controlling the on-off state and the refrigerant flow rate of a refrigerant flow path flowing through the exhaust pipe; and the second control valve is arranged on the exhaust branch and can be used for controlling the on-off state and the refrigerant flow of the refrigerant flow path flowing through the exhaust branch.
In various embodiments of the present disclosure, the heating device of the air conditioner may be one or more of the above-described various heating device types, so that the water in the water storage device can be heated by one of the heating devices alone, or by more than one water storage device simultaneously.
Optionally, if the heating device of the air conditioner comprises a solar heating device and a heat storage device, the solar heating device and the heat storage device are both communicated with the water storage cavity of the water storage device through a heating water outlet pipeline and a heating water return pipeline; here, in order to simplify the number of pipes, both the solar heating apparatus and the thermal storage apparatus may be connected in parallel, and a bypass control valve may be provided on each parallel pipe, so that the heating function of the solar heating apparatus and the thermal storage apparatus may be turned on or off by controlling the on/off state of each bypass control valve.
When the branch control valve is in an open state, the parallel pipeline where the corresponding solar heating device or heat storage device is located is conducted, so that the heating function of the solar heating device or heat storage device on water flowing through the parallel pipeline is started; when the branch control valve is in a closed state, the parallel pipeline where the corresponding solar heating device or heat storage device is located is blocked, so that the heating function of the solar heating device or heat storage device on water is closed.
Optionally, the power supply assembly of the electric heating device is provided with a switch assembly, and the switch assembly can be used for controlling the on-off device of the power supply assembly to the power supply circuit of the resistance wire assembly, so as to switch on the power supply circuit when the switch assembly is in an on state, and switch off the power supply circuit when the switch assembly is in an off state, thereby realizing the on-off operation of the electric heating device.
Optionally, the heating device using the exhaust branch may implement the on-off operation of the heating function of the heating device of this type by controlling the on-off state of the second control valve disposed in the exhaust branch.
In an embodiment of the disclosure, the spray device comprises a spray pipe.
The spray pipe is arranged along the longitudinal direction or the transverse direction of the outdoor heat exchanger, or the spray pipe is arranged above the outdoor heat exchanger; one or more than one spraying hole is formed in the spraying pipe, and water pumped by the third water pump can be sprayed to the outdoor heat exchanger under the action of water pressure.
Here, the number of the spray pipes is one or more than one; the plurality of spray pipes are arranged in parallel or in a cross mode, so that water sprayed out by the spray pipes can cover most of the area of the outdoor heat exchanger, the defrosting effect of the outdoor heat exchanger is guaranteed, and excessive condensation of local frost is avoided.
Optionally, the outdoor defrosting device further comprises a water replenishing device, and the water replenishing device can be used for replenishing water into the water storage device of the water storage device.
In one embodiment, the water replenishing device comprises a water replenishing pipe, one end of the water replenishing pipe is communicated with the water storage cavity, the other end of the water replenishing pipe can be communicated with a household water source, a fourth water pump is arranged on the water replenishing pipe, and the fourth water pump can be used for driving water to be conveyed from one end of the household water source to one end of the water storage cavity, so that water consumed in the water storage cavity can be replenished.
Fig. 1 is a schematic flow chart 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 outdoor environment parameters and operation parameters of a compressor;
optionally, the outdoor environment parameters include: outdoor ambient temperature and outdoor ambient humidity; the operating parameters of the compressor include: the operating frequency of the compressor.
Here, the outdoor unit of the air conditioner is provided with a temperature sensor, and the temperature sensor can be used for detecting the real-time temperature of the outdoor environment where the outdoor unit is located; step S101, acquiring the real-time temperature of the outdoor environment detected by the temperature sensor, and taking the real-time temperature as the outdoor environment temperature;
the outdoor unit of the air conditioner is provided with a humidity sensor which can be used for detecting the real-time humidity of the outdoor environment where the outdoor unit is located; step S101, acquiring the real-time humidity of the outdoor environment detected by the humidity sensor, and taking the real-time humidity as the outdoor environment humidity;
s102, selecting a started heating device according to the heating strategy according to the outdoor environment parameters and the operation parameters of the compressor, so that the water temperature in the water storage device meets the defrosting water temperature condition.
Optionally, the defrosting water temperature condition in step S102 includes: the water temperature in the water storage device is larger than or equal to a set water temperature threshold value.
The defrosting mode comprises the step of starting a spraying device to spray and defrost the outdoor heat exchanger. Here, the water temperature threshold is set to be a preset water temperature threshold for indicating that a good defrosting effect can be achieved. Therefore, when the spraying device sprays water with the water temperature which is greater than or equal to the set water temperature threshold value onto the outdoor heat exchanger, the water temperature is higher at the moment, so that the heat carried by the sprayed water can melt frost condensed on the outdoor heat exchanger, and a higher defrosting and deicing effect is achieved.
Optionally, the value of the set water temperature threshold is a temperature value greater than or equal to 5 ℃, such as 5 ℃, 8 ℃, and the like.
In an embodiment of the present disclosure, the heating device of the air conditioner includes a heating device including at least a solar heating device, an electric heating device, and a heat storage device capable of storing heat of the compressor, which is configured to heat water stored in the water storage device using the solar heating device and to controllably assist in heating the water using one or more of the electric heating device and the heat storage device.
Here, the solar heating apparatus defaults to a normally open state or a closed state.
Here, the outdoor environment parameter may reflect a current outdoor environment condition, and thus may be an external factor that may affect a frosting degree of the outdoor heat exchanger, and the operation parameter of the compressor may affect a temperature of a refrigerant flowing through the outdoor heat exchanger, a flow rate of the refrigerant, and the like, and thus may be an internal factor that may affect the frosting degree of the outdoor heat exchanger; thus, according to the external factors and the internal factors, the heating mode of the water in the heat storage device is adjusted so as to meet the requirement of defrosting water temperature as soon as possible.
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, an embodiment of the present disclosure further provides a control method for defrosting an air conditioner, which includes the steps of:
s201, starting an air conditioner to operate;
here, when the air conditioner is just started to operate, the water temperature in the water storage device is influenced by the outdoor environment when the air conditioner is stopped, and the water temperature is generally low; therefore, at the stage of starting the process, optionally, whether the water temperature in the water storage device meets the defrosting water temperature or not is not judged;
s202, acquiring the outdoor environment temperature, the outdoor environment humidity and the running frequency of a compressor;
s203, judging whether the outdoor environment humidity meets a first humidity condition or not, and the running frequency of the compressor meets a first frequency condition, if so, executing a step S204, otherwise, returning to execute the step S202 or ending the process;
optionally, the first humidity condition comprises: the outdoor environment humidity is greater than a preset humidity threshold value; here, the value range of the humidity threshold is 70% to 75% of relative humidity;
the first frequency condition includes: the running frequency of the compressor is greater than a preset frequency threshold; here, the frequency threshold value ranges from 45Hz to 55 Hz;
s204, judging whether the outdoor environment temperature meets a first temperature condition, if so, executing a step S205, and if not, executing a step S211;
optionally, the first temperature condition includes: the outdoor environment temperature is greater than a preset outer ring temperature threshold; here, the value range of the outer ring temperature threshold is-10 ℃ to-8 ℃;
s205, controlling to start the solar heating device and operating the electric heating device at a first power smaller than the maximum power;
s206, acquiring heating time of the solar heating device and the electric heating device;
s207, judging whether the heating time meets a first time condition, if so, executing a step S208, and if not, returning to the step S206;
optionally, the first time-long condition includes: the heating time is longer than the first set time. Here, the first set time period ranges from 10 minutes to 12 minutes.
S208, acquiring a first water temperature of a water storage device;
in the embodiment of the disclosure, the first water temperature is a water temperature value obtained when the air conditioner heats water in the water storage device by using the solar heating device and the electric heating device (operating at a power less than the maximum power) together;
optionally, in the operation process of the heating device, if the heating time duration does not reach the time duration of the first set time duration, the water temperature in the water storage device may also be detected through the temperature sensor, if the water temperature in the water storage device meets the defrosting water temperature condition, the subsequent flow steps do not need to be executed, and at this time, the water temperature in the water storage device can already reach the water temperature requirement for achieving a better defrosting effect;
s209, judging whether the first water temperature meets the defrosting water temperature condition, if so, executing a step S216, and if not, executing a step S210;
s210, controlling to increase the power of the electric heating device; and executing step S214;
optionally, in step S210, the power of the electric heating device may be increased to its maximum power;
s211, controlling to start the solar heating device and operating the electric heating device with the first power of the maximum power;
s212, acquiring the heating time of the solar heating device and the electric heating device and the exhaust temperature of the compressor;
s213, judging whether the heating time length meets the first time length condition and the exhaust temperature meets the exhaust temperature condition, if so, executing the step S214, otherwise, returning to the step S212;
optionally, the exhaust temperature conditions include: the exhaust temperature of the compressor is greater than a preset exhaust temperature threshold. Here, the exhaust temperature threshold includes 63 ℃ to 67 ℃;
s214, acquiring a second water temperature of the water storage device;
in the embodiment of the disclosure, the second water temperature is a water temperature value obtained when the air conditioner heats the water in the water storage device by using the solar heating device and the electric heating device (operating at the maximum power);
optionally, in the operation process of the heating device, if the heating time duration does not reach the time duration of the first set time duration, the water temperature in the water storage device may also be detected through the temperature sensor, if the water temperature in the water storage device meets the defrosting water temperature condition, the subsequent flow steps do not need to be executed, and at this time, the water temperature in the water storage device can already reach the water temperature requirement for achieving a better defrosting effect;
s215, judging whether the second water temperature meets the defrosting water temperature condition, if so, executing a step S216, and if not, executing a step S217;
s216, controlling to close other heating devices except the solar heating device; the flow is finished;
s217, controlling to start the heat storage device;
in the embodiment of the disclosure, under the condition that the water temperature in the water storage device after the air conditioner is heated by the solar heating device and the electric heating device still does not meet the defrosting water temperature condition, the heat storage device is controlled to be started so as to increase the number and types of heating devices for heating the water storage device and improve the water temperature heating rate;
optionally, after the water temperature heated by the heat storage device meets the defrosting water temperature condition, other heating devices except the solar heating device are controlled to be turned off. The solar heating device can be used for continuously keeping the water temperature in the water storage device in a low-energy consumption mode, and the heating energy consumption of the air conditioner can be reduced by closing the heat storage device or the electric heating device.
In an optional embodiment, the control method for defrosting of an air conditioner further comprises: when the air conditioner meets the entering condition of a defrosting mode and the water temperature in the water storage device meets the defrosting water temperature condition, the defrosting mode that the spraying device sprays and defrosts the outdoor heat exchanger is controlled to be started, and one or more than one of the electric heating device and the heat storage device is controlled to be started;
in the embodiment of the disclosure, when the air conditioner meets the condition of entering the defrosting mode, it is described that the outdoor unit has the problem of frosting, and at this time, a better defrosting effect can be realized through the defrosting mode of spraying water higher than the set water temperature threshold; meanwhile, in the process of the operation in the defrosting mode, one or more than one of the electric heating device and the heat storage device is controlled to be started so as to further heat the water temperature of the water in the water storage device, and therefore the defrosting effect in the defrosting mode can be improved.
Here, when the air conditioner satisfies an entry condition of the defrosting mode and the water temperature in the water storage device does not satisfy a defrosting water temperature condition, one or more of the electric heating device and the heat storage device are controlled to be turned on until the water temperature in the water storage device satisfies the defrosting water temperature condition.
Under the condition that the air conditioner meets the entering condition of a defrosting mode, the problem of frosting existing on an outdoor unit is described, and under the condition that the water temperature in a water storage device does not meet the defrosting water temperature condition, a better defrosting effect cannot be guaranteed; and then the defrost mode is performed.
Optionally, the entering conditions of the defrosting mode include: the temperature of an outdoor coil of the outdoor unit of the air conditioner is less than or equal to the frost point temperature.
Before the above steps are executed, the control method further includes: acquiring the temperature of an outdoor coil of an outdoor unit; when the temperature of the outdoor coil pipe is less than or equal to the frost point temperature, determining that the air conditioner meets the entering condition of a defrosting mode; and when the temperature of the outdoor coil pipe is higher than the frost point temperature, determining that the air conditioner does not meet the entering condition of the defrosting mode.
Here, the frost point temperature is a preset value such as 0 deg.C, -2 deg.C, etc.
Still alternatively, the entering condition of the defrosting mode: and receiving a defrosting control instruction.
Here, the user can input the defrosting control command through a remote controller, an input panel of an indoor unit, an application program of an air conditioner provided in a mobile terminal such as a mobile phone, or the like.
Before the above steps are executed, the control method further includes: detecting whether a defrosting control instruction is received or not; if the received defrosting control instruction is detected, determining that the air conditioner meets the entering condition of a defrosting mode; and if the received defrosting control instruction is not detected, determining that the air conditioner does not meet the entering condition of the defrosting mode.
In an optional embodiment, when the air conditioner does not start the heat storage device and the electric heating device, and the water temperature in the water storage device meets the defrosting water temperature condition, the spraying device is controlled to be started to spray the outdoor heat exchanger for defrosting.
In the embodiment of the disclosure, the condition that the air conditioner enters the defrosting mode is that the water temperature in the water storage device meets the defrosting water temperature condition, so compared with a mode of determining whether to trigger the defrosting mode according to the comparison between the coil temperature and the frost point temperature of the outdoor heat exchanger in part of the prior art, the embodiment of the disclosure provides a novel defrosting method for dynamically controlling the defrosting of the air conditioner based on the water temperature condition of the defrosting mode of spraying defrosting, which can reduce the occurrence probability of frost condensation and other problems of the outdoor heat exchanger under the conditions of severe cold weather in winter and the like in a dynamic manner of spraying defrosting, thereby ensuring the heating performance of the air conditioner and the use experience of users.
In an optional embodiment, the control method for defrosting an air conditioner of the present application further includes: and when the water quantity in the water storage device does not meet the water quantity condition and the air conditioner does not enter the defrosting mode, controlling to supplement water to the water storage device.
In the implementation of the disclosure, a water level detector is further arranged in the water storage device, the water level detector can detect the water level data of the water stored in the water storage cavity, and thus the air conditioner can calculate the real-time water amount in the water storage cavity according to the height change of the stored water level data.
Here, in the case that the water amount in the water storage device does not satisfy the water amount condition, when the air conditioner starts the defrosting mode next time, a process of spraying and defrosting may occur due to insufficient water amount, and thus the water amount in the water storage device of the air conditioner needs to satisfy the water amount condition.
Optionally, the water amount conditions include: the water quantity in the water storage device is larger than or equal to the set water quantity threshold value.
Here, the set water amount threshold may be a fixed value such as 1/2, 1/3, and the like of the total water amount.
Alternatively, the set water volume threshold may be dynamically set according to an estimated frost formation degree of the outdoor unit of the air conditioner.
In an optional embodiment, the estimation of the frosting degree of the outdoor unit can be implemented according to the current outdoor environment temperature, for example, when the outdoor environment temperature is lower, the outdoor environment is worse, the estimated frosting degree of the air conditioner is higher, and at this time, the spraying device needs more water to achieve a better defrosting effect, so that the set water threshold value can be set to a higher value, such as 1/2,2/3 and the like of the total water amount; when the outdoor environment temperature is high, the outdoor environment is good, the estimated frosting degree of the air conditioner is low, and the water quantity required by the spraying device for achieving a good defrosting effect is low, so that the set water quantity threshold value can be set to be a low value, such as 1/4,1/3 and the like of the total water quantity.
Here, since the source of the water supplement is a domestic water source, the temperature thereof is generally low; if water is supplemented in the process of the air conditioner running in the defrosting mode, the water temperature of the water mixed in the water storage cavity is suddenly reduced, so that the air conditioner is easily interrupted and the defrosting mode is easily exited; therefore, the water replenishing operation of the water storage device in the embodiment of the disclosure is performed on the premise that the air conditioner does not enter the defrosting mode, so as to ensure the normal operation of the defrosting mode of the air conditioner.
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; the control device 3 includes:
a first acquisition module 31 configured to acquire outdoor environmental parameters and operating parameters of the compressor;
a heating control module 32 configured to select the heating device to be turned on according to a heating strategy based on outdoor environmental parameters and operating parameters of the compressor such that the water temperature within the water reservoir satisfies a defrost water temperature condition.
In an alternative embodiment, the outdoor environmental parameters include: outdoor ambient temperature and outdoor ambient humidity;
the operating parameters of the compressor include: the operating frequency of the compressor.
In an alternative embodiment, the heating strategy comprises: when the outdoor ambient temperature meets the first temperature condition, the outdoor ambient humidity meets the first humidity condition, and the operating frequency of the compressor meets the first frequency condition, the heating devices selected to be turned on comprise a solar heating device and an electric heating device, wherein the electric heating device is operated at a first power which is less than the maximum power.
In an alternative embodiment, the first temperature condition comprises: the outdoor environment temperature is greater than a preset outer ring temperature threshold value;
the first humidity condition includes: the outdoor environment humidity is greater than a preset humidity threshold value;
the first frequency condition includes: the operating frequency of the compressor is greater than a preset frequency threshold.
In an optional embodiment, the heating strategy further comprises: when the heating duration of the solar heating device and the electric heating device meets the first time long condition and the water temperature in the water storage device does not meet the defrosting water temperature condition, the power of the electric heating device is controlled to be increased.
In an alternative embodiment, the first time long condition comprises: the heating time is longer than the first set time.
In an optional embodiment, the heating strategy further comprises: when the outdoor environment temperature does not meet the first temperature condition, the outdoor environment humidity meets the first humidity condition, and the operating frequency of the compressor meets the first frequency condition, the heating device selected to be turned on comprises a solar heating device and an electric heating device, wherein the electric heating device operates at the maximum power.
In an optional embodiment, the heating strategy further comprises: when the heating duration of the solar heating device and the electric heating device meets the first time long condition, the water temperature in the water storage device does not meet the defrosting water temperature condition, and the exhaust temperature of the compressor meets the exhaust temperature condition, the heating device which is selected to be opened further comprises a heat storage device.
In an alternative embodiment, the exhaust temperature conditions include: the exhaust temperature of the compressor is greater than a preset exhaust temperature threshold.
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 an outdoor unit and an outdoor defrosting device, wherein the outdoor defrosting device comprises a heating device, a water storage device and a spraying device; wherein the heating device at least comprises a solar heating device, an electric heating device and a heat storage device capable of storing heat of the compressor, and is arranged to utilize the solar heating device to heat and controllably utilize one or more of the electric heating device and the heat storage device to assist in heating the water stored in the water storage device; the spraying device is arranged to controllably spray water in the water storage device to the outdoor heat exchanger of the outdoor unit; the air conditioner further 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 comprising a computer program stored on a computer-readable storage medium, the computer program comprising 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 further include a 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 may be 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, which is stored in a storage medium and includes one or more instructions for enabling 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 according to 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 the 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 disclosed embodiments 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 other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the 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 only one type of logical functional division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. 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 (6)
1. The control method for defrosting of the air conditioner is characterized in that the air conditioner comprises an outdoor unit and an outdoor defrosting device, wherein the outdoor defrosting device comprises a heating device, a water storage device and a spraying device; wherein the heating means comprises at least a solar heating means, an electrical heating means and a thermal storage means capable of storing compressor heat, arranged to controllably heat water stored in the water storage means using one or more of the solar heating means, the electrical heating means and the thermal storage means; the spraying device is arranged to controllably spray water in the water storage device to the outdoor heat exchanger of the outdoor unit;
the control method comprises the following steps:
acquiring the temperature of an outdoor coil of the outdoor unit;
when the temperature of the outdoor coil pipe is less than or equal to the frost point temperature, determining that the air conditioner meets the entering condition of a defrosting mode;
acquiring outdoor environment parameters and operation parameters of a compressor under the condition that an air conditioner meets the entering condition of a defrosting mode;
selecting a heating device to be started according to the outdoor environment parameter and the operation parameter of the compressor and a heating strategy so as to enable the water temperature in the water storage device to meet the defrosting water temperature condition;
when the air conditioner meets the entering condition of a defrosting mode and the water temperature in the water storage device meets the defrosting water temperature condition, controlling to start a defrosting mode in which the spraying device sprays and defrosts the outdoor heat exchanger;
when the air conditioner meets the entering condition of a defrosting mode and the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to start one or more of the electric heating device and the heat storage device until the water temperature in the water storage device meets the defrosting water temperature condition;
the outdoor environment parameters include: outdoor ambient temperature and outdoor ambient humidity; the operating parameters of the compressor include: the operating frequency of the compressor;
the heating strategy comprises:
when the outdoor environment temperature meets a first temperature condition, the outdoor environment humidity meets a first humidity condition, and the operating frequency of the compressor meets a first frequency condition, selecting the heating devices to be started to comprise the solar heating device and the electric heating device, wherein the electric heating device is operated at a first power which is less than the maximum power;
when the heating time of the solar heating device and the electric heating device meets a first time long condition and the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to increase the power of the electric heating device;
when the outdoor environment temperature does not satisfy the first temperature condition, the outdoor environment humidity satisfies the first humidity condition, and the operating frequency of the compressor satisfies the first frequency condition, the heating devices selected to be turned on include the solar heating device and the electric heating device, wherein the electric heating device operates at maximum power;
solar heating device with long first time strip condition is satisfied in electric heating device's heating duration, just temperature in the water storage device does not satisfy defrosting temperature condition, just when the exhaust temperature of compressor satisfies the exhaust temperature condition, the heating device of selected opening still includes heat accumulation device.
2. The control method according to claim 1,
the first temperature condition includes: the outdoor environment temperature is greater than a preset outer ring temperature threshold value;
the first humidity condition includes: the outdoor environment humidity is greater than a preset humidity threshold value;
the first frequency condition includes: the operating frequency of the compressor is greater than a preset frequency threshold.
3. The control method of claim 1, wherein the first time condition comprises: the heating time is longer than the first set time.
4. The control method according to claim 1, characterized in that the exhaust gas temperature condition includes: the exhaust temperature of the compressor is greater than a preset exhaust temperature threshold.
5. The control device for defrosting of the air conditioner is characterized in that the air conditioner comprises an outdoor unit and an outdoor defrosting device, wherein the outdoor defrosting device comprises a heating device, a water storage device and a spraying device; wherein the heating means comprises at least solar heating means, electrical heating means and thermal storage means capable of storing compressor heat, arranged to controllably heat water stored in the water storage means using one or more of the solar heating means, the electrical heating means and the thermal storage means; the spraying device is arranged to controllably spray water in the water storage device to the outdoor heat exchanger of the outdoor unit;
the control device includes:
a first obtaining module configured to obtain an outdoor coil temperature of the outdoor unit; when the temperature of the outdoor coil pipe is less than or equal to the frost point temperature, determining that the air conditioner meets the entering condition of a defrosting mode; acquiring outdoor environment parameters and operation parameters of a compressor under the condition that an air conditioner meets the entering condition of a defrosting mode;
a heating control module configured to select an activated heating device according to a heating strategy based on the outdoor environment parameter and an operating parameter of the compressor such that a water temperature within the water storage device satisfies a defrost water temperature condition; when the air conditioner meets the entering condition of a defrosting mode and the water temperature in the water storage device meets the defrosting water temperature condition, the defrosting mode that the spraying device is controlled to be started to spray and defrost the outdoor heat exchanger is controlled; when the air conditioner meets the entering condition of a defrosting mode and the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to start one or more of the electric heating device and the heat storage device until the water temperature in the water storage device meets the defrosting water temperature condition;
the outdoor environment parameters include: outdoor ambient temperature and outdoor ambient humidity; the operating parameters of the compressor include: the operating frequency of the compressor;
the heating strategy comprises:
when the outdoor environment temperature meets a first temperature condition, the outdoor environment humidity meets a first humidity condition, and the operating frequency of the compressor meets a first frequency condition, selecting the heating devices to be started to comprise the solar heating device and the electric heating device, wherein the electric heating device is operated at a first power which is less than the maximum power;
when the heating time of the solar heating device and the electric heating device meets a first time long condition and the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to increase the power of the electric heating device;
when the outdoor environment temperature does not satisfy the first temperature condition, the outdoor environment humidity satisfies the first humidity condition, and the operating frequency of the compressor satisfies the first frequency condition, the heating devices selected to be turned on include the solar heating device and the electric heating device, wherein the electric heating device operates at maximum power;
solar heating device with long term first time long condition is satisfied to electric heating device's heating, just temperature in the water storage device does not satisfy defrosting temperature condition, just when the exhaust temperature of compressor satisfies the exhaust temperature condition, the heating device of selected opening still includes heat accumulation device.
6. The air conditioner is characterized by comprising an outdoor unit and an outdoor defrosting device, wherein the outdoor defrosting device comprises a heating device, a water storage device and a spraying device; wherein the heating means comprises at least solar heating means, electrical heating means and thermal storage means capable of storing compressor heat, arranged to controllably heat water stored in the water storage means using one or more of the solar heating means, the electrical heating means and the thermal storage means; the spraying device is arranged to controllably spray water in the water storage device to the outdoor heat exchanger of the outdoor unit; the air conditioner further comprises a control device according to claim 5.
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| CN109323368A (en) * | 2018-09-30 | 2019-02-12 | 广东美的制冷设备有限公司 | Air-conditioning and its defrosting method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6493370B2 (en) * | 2016-01-25 | 2019-04-03 | 株式会社デンソー | Heat pump system |
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| CN101799220A (en) * | 2010-03-15 | 2010-08-11 | 杭州地源空调研究所有限公司 | Air source heat pump for radiating heat by spraying and defrosting by using hot water |
| CN103591669A (en) * | 2013-10-18 | 2014-02-19 | 广东美的制冷设备有限公司 | Air-conditioner equipment and anti-frosting method and anti-frosting device for air-conditioner equipment |
| CN106642437A (en) * | 2015-10-22 | 2017-05-10 | 何定兵 | Fog system capable of increasing seasonal energy efficiency ratio (SEER) of air conditioning and refrigeration unit all year around |
| CN109323368A (en) * | 2018-09-30 | 2019-02-12 | 广东美的制冷设备有限公司 | Air-conditioning and its defrosting method and device |
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