CN112050358B - 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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- CN112050358B CN112050358B CN201910491611.3A CN201910491611A CN112050358B CN 112050358 B CN112050358 B CN 112050358B CN 201910491611 A CN201910491611 A CN 201910491611A CN 112050358 B CN112050358 B CN 112050358B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Abstract
The application relates to a control method and a control device for defrosting of an air conditioner and the air conditioner. The control method comprises the following steps: when the air conditioner meets the entering condition of the defrosting mode, selecting an adaptive defrosting mode from two or more defrosting modes according to the water temperature in the water storage device; and controlling the air conditioner to enter a selected defrosting mode. According to the control method for defrosting of the air conditioner, the air conditioner is controlled to execute different defrosting modes through judging the water temperature in the water storage device, so that the actual defrosting mode executed by the air conditioner can meet the 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 to solve the problem of frosting and freezing of the outdoor unit of the air conditioner, for example, the outdoor unit is heated by a heating device provided in the outdoor unit, or an outdoor heat exchanger is defrosted and ice-melted by a high-temperature refrigerant discharged from a compressor, or the outdoor unit is defrosted by spraying a liquid such as an antifreeze solution or water.
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 an actual application process and accordingly is poor in defrosting effect.
In some embodiments, the control method comprises:
when the air conditioner meets the entering condition of the defrosting mode, selecting an adaptive defrosting mode from two or more defrosting modes according to the water temperature in the water storage device;
and controlling the air conditioner to enter a selected defrosting mode.
In some embodiments, the control device comprises:
a mode selection module configured to select an adapted defrost mode from two or more defrost modes according to a water temperature within the water storage device when the air conditioner satisfies an entry condition of the defrost mode;
a defrost control mode configured to control the air conditioner to enter a selected defrost mode.
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 is configured to controllably heat water stored in the water storage device, and the spraying device is configured to controllably spray water in the water storage device to an 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 air conditioner is controlled to execute different defrosting modes by judging the water temperature in the water storage device, so that the actual defrosting mode executed by the air conditioner can meet the 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 an outdoor environment in the related art 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 by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating 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 heat of hot water is utilized to melt frost on the outdoor heat exchanger, and the purpose of defrosting and defrosting the outdoor unit is achieved.
In an alternative embodiment, the water storage means is a reservoir defining a storage chamber 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 comprises 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.
The solar heating device mainly comprises a heat absorbing plate, a cover plate, a shell and the like, wherein a space for accommodating the heat absorbing plate is defined in the shell, the cover plate covers one side face of the shell, sunlight is radiated on the heat absorbing plate through the cover plate, and the heat absorbing plate can absorb energy of solar radiation and convert the energy into heat energy.
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 also provided with a power adjusting component, and the heating rate of the resistance wire component can be changed by changing the current or voltage supplied to the resistance wire component, 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 with the compressor through fins and the like, and the heat generated by the compressor during operation can be conducted to the heat conduction pipe so as to increase the heat of the heat conduction pipe;
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 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 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 partially flows along the original exhaust pipeline of the air conditioner, and the other part flows along the exhaust branch and exchanges heat with the refrigerant in the water storage cavity when flowing through the partial pipelines so as to heat the water in the water storage cavity by using the heat of the high temperature refrigerant.
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 communicated, 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 opening or closing 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 flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure.
As shown in fig. 1, an embodiment of the present disclosure provides a control method for defrosting an air conditioner, including:
s101, when the air conditioner meets the entering condition of the defrosting mode, selecting an adaptive defrosting mode from two or more defrosting modes according to the water temperature in the water storage device;
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.
The control method further includes, before performing step S101: 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 greater 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.
As yet another alternative, the entering conditions of the defrost 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.
The control method further includes, before performing step S101: 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 the embodiment of the disclosure, two or more defrosting modes are preset in the air conditioner, and the air conditioner can select one of the modes as the defrosting mode selected by the current defrosting process according to the actual defrosting requirement.
Here, the air conditioner may select an adaptive defrost mode from two or more defrost modes according to different conditions of water temperature in the water storage device.
Optionally, the two or more defrosting modes include a first defrosting mode and a second defrosting mode, and the two defrosting modes are different from each other.
Optionally, the first defrosting mode includes controlling to start the spraying device to spray and defrost the outdoor heat exchanger;
the defrosting mode is to melt the frost on the outdoor heat exchanger by utilizing the heat of the water in the water storage device and make the melted frost water separate from the outdoor heat exchanger under the impact of spray water so as to achieve the aim of removing the frost on the outdoor heat exchanger.
Optionally, the second defrosting mode includes controlling the air conditioner to switch to a defrosting refrigerant flow direction, where the defrosting refrigerant flow direction is the same as the refrigerant flow direction defined by the refrigeration mode;
under the defrosting mode, high-temperature refrigerants discharged by an exhaust port of the compressor flow through the outdoor heat exchanger firstly, and high-temperature heat of the refrigerants is conducted to the outer surface of the outdoor heat exchanger, so that frost condensed on the outer surface of the outdoor heat exchanger is melted after absorbing the heat and forms water flow to be separated from the outdoor heat exchanger, and the purpose of removing the frost on the outdoor heat exchanger can be achieved.
In the embodiment of the present disclosure, the step S101 of selecting an adaptive defrost mode from two or more defrost modes according to the temperature of water in the water storage device includes: when the water temperature in the water storage device meets the defrosting water temperature condition, selecting a first defrosting mode; and when the water temperature in the water storage device does not meet the defrosting water temperature condition, selecting a second defrosting mode.
Therefore, after the air conditioner is determined to meet the entering condition of entering the defrosting mode, the air conditioner further judges whether the water temperature in the water storage device meets the defrosting water temperature condition or not, and selects the corresponding defrosting mode according to the judgment result.
Optionally, the defrost water temperature conditions include: the water temperature in the water storage device is larger than or equal to a set water temperature threshold value.
That is, if the water temperature in the water storage device is greater than or equal to the set water temperature threshold, the first defrost mode is selected; and if the water temperature in the water storage device is less than the set water temperature threshold value, selecting a second defrosting mode.
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 a first 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, so that the heat carried by the sprayed water can melt frost condensed on the outdoor heat exchanger, and the first defrosting mode can achieve a higher defrosting and ice melting effect; and when the water temperature of the water storage device is smaller than the set water temperature threshold value, the actual defrosting and ice melting effects of the first defrosting mode are poor, so that the second defrosting mode different from the first defrosting mode is selected, and the air conditioner can still ensure the defrosting effects by selecting other defrosting modes under the condition that the water temperature of the water storage device is lower.
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.
And S102, controlling the air conditioner to enter a selected defrosting mode.
In the embodiment of the disclosure, the air conditioner can select different defrosting modes according to different water temperatures in the water storage device, so that the actual defrosting mode of the air conditioner can meet the requirement of achieving a better defrosting effect, and the problem that the defrosting effect is influenced due to uncontrollable water temperature caused by the influence of an outdoor environment in the related art is effectively reduced.
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, when the air conditioner meets the entering condition of a defrosting mode, acquiring a first water temperature in a water storage device;
s202, judging whether the first water temperature in the water storage device is larger than or equal to a set water temperature threshold value or not, if so, executing a step S203, and if not, executing a step S204;
s203, controlling the air conditioner to enter a first defrosting mode; and executing step S205;
s204, controlling the air conditioner to enter a second defrosting mode, and ending the process;
in the embodiment of the present disclosure, the specific execution flows of steps S201 to S204 refer to the foregoing embodiments, which are not described herein again;
s205, acquiring a second water temperature in the water storage device;
in the embodiment of the present disclosure, the second water temperature in the water storage device is a real-time water temperature of the air conditioner during the operation of the first defrosting mode;
optionally, the second water temperature may also be detected by a temperature sensor arranged in the water storage device;
s206, judging whether the second water temperature in the water storage device meets the defrosting water temperature condition, if so, returning to the step S205, and if not, executing the step S207;
in the embodiment of the disclosure, if the defrosting water temperature condition is still met in the process of operating the air conditioner in the first defrosting mode, it indicates that the water sprayed out of the outdoor heat exchanger by the spraying device can still keep a good defrosting effect, so that the air conditioner keeps the current operating state of the first defrosting mode unchanged; if the defrosting water temperature condition is not met in the process of operating the defrosting mode of the air conditioner, the defrosting effect of the water sprayed out of the outdoor heat exchanger by the spraying device is reduced, even worse, and the subsequent step S206 is executed;
s207, controlling the air conditioner to exit the first defrosting mode;
in the embodiment of the disclosure, under the condition that the defrosting effect of the current first defrosting mode is poor, the air conditioner is controlled to exit the first defrosting mode, so that the waste of excessive water resources can be avoided, and the problem that the frosting degree of the outdoor heat exchanger of the air conditioner is aggravated by low-temperature water can be avoided;
s208, controlling to start the heating device;
here, the water temperature in the water storage device is reduced to a temperature value at which a good defrosting effect cannot be maintained; therefore, in the case that the air conditioner exits the first defrosting mode, the air conditioner reactivates the heating device to heat the water in the water storage device again by using the heating device, so that the defrosting water temperature condition can be satisfied again.
In an alternative embodiment, the heating device of the air conditioner is an electric heating device; the control method of the present application further includes: and adjusting the heating power of the electric heating device according to the water temperature in the water storage device.
Here, if the water temperature of the water storage device is different, if the heating power of the original electric heating device is still used, the time taken for the water temperature in the water storage device to be reheated to be higher than the set temperature threshold value is also different, and if the water temperature is far lower than the set temperature threshold value, the heating time is longer; and when the water temperature is slightly lower than the set temperature threshold, the heating time is shorter.
Therefore, in the embodiment of the disclosure, the heating power of the electric heating device is adjusted according to the water temperature in the water storage device, so that the problems of long interval time between two defrosting modes and excessive frost condensation caused by long heating time can be avoided.
Optionally, the heating power of the electric heating device is adjusted according to the water temperature in the water storage device, and the method comprises the following steps: calculating the temperature difference value between the water temperature in the water storage device and a set water temperature threshold value; and adjusting the heating power of the electric heating device according to the preset incidence relation.
Wherein the correlation relationship comprises a corresponding relationship in which the temperature difference and the heating power are positively correlated. Namely, the larger the temperature difference between the water temperature and the set water temperature threshold is, the higher the corresponding heating power is, the faster the water temperature rises, and thus the time occupied by heating is shortened; and the smaller the temperature difference between the water temperature and the set water temperature threshold value is, the lower the corresponding heating power is, so that the power consumption of the electric heating device is reduced and the overall electric power use cost of the air conditioner is reduced on the premise of ensuring that the heating time does not occupy too long.
In an optional embodiment, the control steps of the control method for defrosting an air conditioner further include: 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, etc. 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 at the moment, the water quantity required by the spraying device for realizing a good defrosting effect is small, 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, and the problems that the air conditioner is interrupted and the air conditioner exits the first defrosting mode easily occur; 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 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 mode selection module 31 configured to select an adapted defrosting mode from two or more defrosting modes according to a water temperature within the water storage device when the air conditioner satisfies an entry condition of the defrosting mode;
a defrost control mode 32 configured to control the air conditioner to enter a selected defrost mode.
In an alternative embodiment, the mode selection module 31 is configured to:
when the water temperature in the water storage device meets the defrosting water temperature condition, selecting a first defrosting mode;
when the water temperature in the water storage device does not meet the defrosting water temperature condition, selecting a second defrosting mode;
the first defrosting mode comprises the step of controlling and starting the spraying device to spray and defrost the outdoor heat exchanger.
In an alternative embodiment, the preset defrost water temperature conditions include: the water temperature in the water storage device is larger than or equal to a set water temperature threshold value.
In an alternative embodiment, the second defrost mode includes controlling the air conditioner to switch to a defrost refrigerant flow direction, which is the same as the refrigerant flow direction defined by the cooling mode.
In an alternative embodiment, the control device 3 further comprises a heating control module configured to:
and when the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to start the heating device.
In an alternative embodiment, the heating means comprises an electric heating means;
the heating control module is further configured to adjust the heating power of the electric heating device in accordance with the water temperature within the water reservoir.
In an alternative embodiment, the heating control module is configured to:
calculating the temperature difference value between the water temperature in the water storage device and a set water temperature threshold value;
adjusting the heating power of the electric heating device according to a preset incidence relation; wherein, the correlation comprises a corresponding relation that the temperature difference value and the heating power are in positive correlation.
In an optional embodiment, the control device 3 further comprises a water replenishment control module configured to:
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.
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, the heating device is set to controllably heat water stored in the water storage device, and the spraying device is set to controllably spray water in the water storage device to an 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, which has a structure as shown in fig. 4, and 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 used as a computer-readable storage medium for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 400 executes functional applications and data processing by running software programs, instructions and modules stored in the memory 401, that is, implements the control method for defrosting an air conditioner in the above-described method embodiment.
The memory 401 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 401 may include a high-speed random access memory, and may also include a nonvolatile memory.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the 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 elements. 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 technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the control apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (7)
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, the outdoor defrosting device comprises a heating device, a water storage device, a spraying device and a water supplementing device, wherein the heating device is set to controllably heat water stored in the water storage device, the heating device comprises a solar heating device and a heat storage device, and the solar heating device and the heat storage device are both communicated with a water storage cavity of the water storage device through a heating water outlet pipeline and a heating water return pipeline; the solar heating device and the heat storage device are connected in parallel, a branch control valve is arranged on each parallel pipeline, when the branch control valve is in an open state, the parallel pipeline where the corresponding solar heating device or the heat storage device is located is conducted, and the heating function of the solar heating device or the 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, the heating function of the solar heating device or heat storage device to water is closed, the spraying device is set to controllably spray the water in the water storage device to the outdoor heat exchanger of the outdoor unit, the water supplementing device can be used for supplementing water into the water storage device, the water supplementing device comprises a water supplementing pipe, one end of the water supplementing pipe is communicated with the water storage cavity, and the other end of the water supplementing pipe is communicated with a household water source,
the control method comprises the following steps:
when the air conditioner meets the entering condition of a defrosting mode, selecting an adaptive defrosting mode from two or more defrosting modes according to the water temperature in the water storage device, controlling the air conditioner to enter the selected defrosting mode, and when the water temperature in the water storage device meets the defrosting water temperature condition, selecting a first defrosting mode; when the water temperature in the water storage device does not meet the defrosting water temperature condition, selecting a second defrosting mode; the first defrosting mode comprises controlling to start the spraying device to spray and defrost the outdoor heat exchanger, acquiring first water temperature in the water storage device, and controlling to enter a defrosting mode when the first water temperature in the water storage device meets a defrosting water temperature condition, wherein the defrosting water temperature condition comprises that the water temperature in the water storage device is larger than or equal to a set water temperature threshold value, when the air conditioner operates in the defrosting mode, acquiring second water temperature in the water storage device, when the second water temperature in the water storage device does not meet the defrosting water temperature condition, controlling the air conditioner to exit the defrosting mode, and when the air conditioner exits the defrosting mode, the air conditioner restarts the heating device to heat water in the water storage device by using the heating device again, so that the water can meet the defrosting water temperature condition again;
further comprising:
controlling to supplement water to the water storage device when the water amount in the water storage device does not meet the water amount condition and the air conditioner does not enter a defrosting mode,
the water volume condition includes that the water volume in the water storage device is greater than or equal to a set water volume threshold,
the set water volume threshold is dynamically set according to the frosting degree of the outdoor unit of the air conditioner, when the outdoor environment temperature is low, the frosting degree of the air conditioner is estimated to be high, and at the moment, the set water volume threshold is set to be 2/3 of the total water volume; when the outdoor environment temperature is high, the frosting degree of the air conditioner is estimated to be low, and at the moment, the set water quantity threshold value is set to 1/4 of the total water quantity.
2. The control method according to claim 1, wherein the second defrost mode includes controlling the air conditioner to switch to a defrost refrigerant flow direction, the defrost refrigerant flow direction being the same as a refrigerant flow direction defined by the cooling mode.
3. The control method according to claim 1, characterized by further comprising:
and when the water temperature in the water storage device does not meet the defrosting water temperature condition, controlling to start the heating device.
4. The control method according to claim 1,
the control method further comprises the following steps: and adjusting the heating power of the electric heating device according to the water temperature in the water storage device.
5. The control method according to claim 4, wherein said adjusting the heating power of the electric heating device according to the water temperature in the water storage device comprises:
calculating the temperature difference value between the water temperature in the water storage device and a set water temperature threshold value;
adjusting the heating power of the electric heating device according to a preset incidence relation; wherein the correlation includes a correspondence in which the temperature difference value and the heating power are positively correlated.
6. A control device for defrosting of an air conditioner is characterized in that the air conditioner comprises an outdoor unit and an outdoor defrosting device, the outdoor defrosting device comprises a heating device, a water storage device, a spraying device and a water supplementing device, wherein the heating device is set to controllably heat water stored in the water storage device, the heating device comprises a solar heating device and a heat storage device, and the solar heating device and the heat storage device are both communicated with a water storage cavity of the water storage device through a heating water outlet pipeline and a heating water return pipeline; the solar heating device and the heat storage device are connected in parallel, a branch control valve is arranged on each parallel pipeline, when the branch control valve is in an open state, the parallel pipeline where the corresponding solar heating device or the heat storage device is located is conducted, and the heating function of the solar heating device or the 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, the heating function of the solar heating device or heat storage device to water is closed, the spraying device is set to controllably spray the water in the water storage device to the outdoor heat exchanger of the outdoor unit, the water supplementing device can be used for supplementing water into the water storage device, the water supplementing device comprises a water supplementing pipe, one end of the water supplementing pipe is communicated with the water storage cavity, and the other end of the water supplementing pipe is communicated with a household water source,
the control device includes:
a mode selection module configured to select an adaptive defrost mode from two or more defrost modes according to a water temperature in the water storage device when the air conditioner satisfies an entry condition of the defrost mode, a defrost control mode configured to control the air conditioner to enter the selected defrost mode, and select a first defrost mode when the water temperature in the water storage device satisfies a defrost water temperature condition; when the water temperature in the water storage device does not meet the defrosting water temperature condition, selecting a second defrosting mode; wherein the first defrosting mode comprises controlling to start the spraying device to spray and defrost the outdoor heat exchanger, acquiring first water temperature in the water storage device, controlling to enter a defrosting mode when the first water temperature in the water storage device meets a defrosting water temperature condition, wherein the defrosting water temperature condition comprises that the water temperature in the water storage device is greater than or equal to a set water temperature threshold value, acquiring second water temperature in the water storage device when the air conditioner operates in the defrosting mode, controlling the air conditioner to exit the defrosting mode when the second water temperature in the water storage device does not meet the defrosting water temperature condition, and restarting the heating device by the air conditioner under the condition that the air conditioner exits the defrosting mode so as to heat water in the water storage device by using the heating device again and enable the water storage device to meet the defrosting water temperature condition again,
further comprising:
the water supplementing module is configured to control water supplementing of the water storage device when the water amount in the water storage device does not meet a water amount condition and the air conditioner does not enter a defrosting mode, wherein the water amount condition comprises that the water amount in the water storage device is larger than or equal to a set water amount threshold value, the set water amount threshold value is dynamically set according to the frosting degree of an air conditioner outdoor unit, when the outdoor environment temperature is low, the frosting degree of the air conditioner is estimated to be high, and at the moment, the set water amount threshold value is set to 2/3 of the total water amount; when the outdoor environment temperature is high, the frosting degree of the air conditioner is estimated to be low, and at the moment, the set water quantity threshold value is set to 1/4 of the total water quantity.
7. An air conditioner, 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 device is arranged to controllably heat water stored in the water storage device, and the spraying device is arranged to controllably spray the water in the water storage device to an outdoor heat exchanger of the outdoor unit; the air conditioner further comprises a control device according to claim 6.
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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 |
| CN203364524U (en) * | 2013-05-27 | 2013-12-25 | 广东志高空调有限公司 | Heat pump air conditioner system with good defrosting function |
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| CN204100447U (en) * | 2014-09-14 | 2015-01-14 | 深圳市沃森空调技术有限公司 | With the air-conditioner of heat storage |
Family Cites Families (1)
| 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 |
| CN103574860A (en) * | 2012-07-30 | 2014-02-12 | 青岛海信日立空调系统有限公司 | Air conditioner defrosting circulation system |
| CN203364524U (en) * | 2013-05-27 | 2013-12-25 | 广东志高空调有限公司 | Heat pump air conditioner system with good defrosting function |
| CN204100447U (en) * | 2014-09-14 | 2015-01-14 | 深圳市沃森空调技术有限公司 | With the air-conditioner of heat storage |
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Effective date of registration: 20220531 Address after: 230000 Haier Industrial Park, No.200, Fanhua Avenue, Hefei Economic and Technological Development Zone, Anhui Province Applicant after: HEFEI HAIER AIR CONDITIONER Co.,Ltd. Applicant after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Applicant before: Haier Zhijia Co.,Ltd. |
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