CN112050366B - 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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- CN112050366B CN112050366B CN201910492377.6A CN201910492377A CN112050366B CN 112050366 B CN112050366 B CN 112050366B CN 201910492377 A CN201910492377 A CN 201910492377A CN 112050366 B CN112050366 B CN 112050366B
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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 a first water temperature in the water storage device; when the first water temperature in the water storage device meets the defrosting water temperature condition, controlling to enter a defrosting mode; and the defrosting mode comprises the step of starting the spraying device to spray and defrost the outdoor heat exchanger. According to the control method for defrosting of the air conditioner, the air conditioner is controlled to enter the defrosting mode by judging whether the water temperature in the water storage device is the preset defrosting water temperature condition or not, so that the water temperature requirement for achieving a better defrosting effect can be met by spray water in the process of executing the defrosting mode by the air conditioner, and the problem that the defrosting effect is affected due to uncontrollable water temperature caused by outdoor environment influence 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, condensed water on the outer surface of a condenser of the outdoor unit can drip on the base plate, the condenser and the base plate of the air conditioner can be caused to freeze under the condition of long-time operation of the air conditioner, a condensed ice layer on the outdoor unit can block heat exchange between an internal refrigerant and an outdoor environment, the refrigerating efficiency of the air conditioner is reduced, the air conditioner has to operate with increased power in order to ensure the heating effect of the air conditioner, and extra consumption of electric energy and improvement of the use cost of a user are also caused.
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:
obtaining a first water temperature within the water storage device;
when the first water temperature in the water storage device meets the defrosting water temperature condition, controlling to enter a defrosting mode;
and the defrosting mode comprises the step of starting the spraying device to spray and defrost the outdoor heat exchanger.
In some embodiments, the control device comprises:
a first acquisition module configured to acquire a first water temperature within the water reservoir;
a defrost control module configured to control entry into a defrost mode when a first water temperature within the water storage device satisfies a defrost water temperature condition;
and the defrosting mode comprises the step of starting the spraying device to spray and defrost the outdoor heat exchanger.
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 enter the defrosting mode by judging whether the water temperature in the water storage device is the preset defrosting water temperature condition or not, so that the water temperature requirement for achieving a better defrosting effect can be met by spray water in the process of executing the defrosting mode by the air conditioner, and the problem that the defrosting effect is affected due to uncontrollable water temperature caused by outdoor environment influence 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 by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a control method for defrosting an air conditioner according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a control device for defrosting of 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 advantages of the embodiments of the present disclosure can be understood in detail, a more particular description of the embodiments of the disclosure, briefly summarized above, may be had by reference to the appended drawings, which are included to illustrate, but are not intended to limit the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may 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 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 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 heat storage apparatus may be connected in parallel, and a branch control valve may be provided on each parallel pipe, respectively, so that the opening or closing operation of the heating function of the solar heating apparatus and the heat storage apparatus may be achieved by controlling the opening and closing state of each branch 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 flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure.
As shown in fig. 1, an embodiment of the present disclosure provides a control method for defrosting an air conditioner, including:
s101, acquiring a first water temperature in a water storage device;
optionally, the water storage device further comprises a temperature sensor, which may be used to detect the real-time temperature of the water stored by the water storage device; step S101, acquiring the real-time temperature of the water detected by the temperature sensor, and using the real-time temperature as the first water temperature of the water storage device;
s102, when the first water temperature in the water storage device meets the defrosting water temperature condition, controlling to enter a defrosting mode;
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.
Therefore, in step S102, if the first water temperature acquired in step S101 is greater than or equal to the set water temperature threshold, the air conditioner is controlled to enter the defrost mode; and if the first water temperature acquired in the step S101 is less than the set water temperature threshold, controlling the air conditioner not to enter a defrosting mode, and maintaining the current running state unchanged.
In the embodiment of the disclosure, 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 the water with the 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 at the moment, so that the heat carried by the sprayed water can melt the frost condensed on the outdoor heat exchanger, and a higher defrosting and deicing effect is achieved.
Optionally, the value of the water temperature threshold is set to be a temperature value greater than or equal to 5 ℃, such as 5 ℃, 8 ℃, and the like.
In the embodiment of the disclosure, the condition that the air conditioner triggers to enter the defrosting mode is that the first water temperature in the water storage device meets the defrosting water temperature condition, so compared with a mode that whether the defrosting mode is triggered or not is determined according to comparison of the coil temperature of the outdoor heat exchanger and the frost point temperature in part of the prior art, the embodiment of the disclosure provides a novel defrosting method for dynamically controlling defrosting of the air conditioner based on the water temperature condition of the defrosting mode of spraying defrosting, and the occurrence probability of problems of frost condensation and the like of the outdoor heat exchanger under the conditions of winter severe cold climate and the like can be reduced through a dynamic way of spraying defrosting, so that the heating performance of the air conditioner and the use experience of a user are ensured.
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, acquiring a first water temperature in a water storage device;
s202, judging whether the first water temperature in the water storage device meets a defrosting water temperature condition or not, if so, executing a step S203, and if not, returning to execute the step S201;
s203, controlling the air conditioner to enter a defrosting mode; and executing step S204;
in the embodiment of the present disclosure, the specific execution flow of steps S201 to S203 refers to the foregoing embodiments, which are not described herein again;
s204, acquiring a second water temperature in the water storage device;
in the disclosed embodiment, the second water temperature in the water storage device is the real-time water temperature of the air conditioner during the defrosting mode of operation;
optionally, the second water temperature may also be detected by a temperature sensor arranged in the water storage device;
s205, judging whether the second water temperature in the water storage device meets the defrosting water temperature condition, if so, returning to the step S204, and if not, executing the step S206;
in the embodiment of the disclosure, if the defrosting water temperature condition is still met in the process of operating the defrosting mode of the air conditioner, 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 defrosting mode operation state unchanged; if the defrosting water temperature condition is not met in the process of operating the air conditioner in the defrosting mode, 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;
s206, controlling the air conditioner to exit a defrosting mode;
in the embodiment of the disclosure, under the condition that the defrosting effect of the current defrosting mode is poor, the air conditioner is controlled to exit the defrosting mode, so that excessive water resource waste 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;
s207, 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 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 second water temperature in the water storage device.
Here, if the heating power of the original electric heating device is still used when the second water temperature of the water storage device is different, 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 second water temperature is far lower than the set temperature threshold value, the heating time is longer; and in the case that the second 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 second 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 second water temperature in the water storage device, and the steps include: calculating the temperature difference value between the second 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 value between the second 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 second water temperature and the set water temperature threshold value is, the lower the corresponding heating power is, so that on the premise of ensuring that the heating time does not occupy too long, the power consumption of the electric heating device is reduced, and the integral electric power use cost of the air conditioner is reduced.
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 where 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, the process of spraying and defrosting may occur due to the 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 degree of frosting 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 replenished in the process of operating the air conditioner in the defrosting mode, the water temperature of the water mixed in the water storage cavity can be 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 a first water temperature inside the water storage device;
a defrost control module 32 configured to control entry into a defrost mode when a first water temperature within the water storage device satisfies a defrost water temperature condition;
and the defrosting mode comprises the step of starting a spraying device to spray and defrost the outdoor heat exchanger.
In an alternative embodiment, 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.
In an optional embodiment, the first obtaining module is further configured to obtain a second water temperature in the water storage device when the air conditioner operates in the defrosting mode;
and the defrosting control module is also configured to control 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.
In an optional embodiment, the control apparatus further comprises a heating control module configured to:
and when the second water temperature in the water storage device does not meet the preset 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 configured to: and adjusting the heating power of the electric heating device according to the second water temperature in the water storage device.
In an alternative embodiment, the heating control module is configured to:
calculating the temperature difference value of the second 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 relationship comprises a corresponding relationship in which the temperature difference and the heating power are positively correlated.
In an optional embodiment, the control apparatus further comprises a water replenishing 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 also comprises the control device provided in the above 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 also include a Communication Interface (Communication Interface)402 and a bus 403. The processor 400, the communication interface 402, and the memory 401 may communicate with each other through a bus 403. Communication interface 402 may be used for information transfer. The processor 400 may call logic instructions in the memory 401 to execute the control method for air conditioner defrosting provided in the above-described embodiment.
In addition, the logic instructions in the memory 401 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 401 is a computer-readable storage medium and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 400 executes functional applications and data processing by running software programs, instructions and modules stored in the memory 401, that is, implements the control method for defrosting an air conditioner in the above-described method embodiment.
The memory 401 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 401 may include a high-speed random access memory, and may also include a nonvolatile memory.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments of the present disclosure includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, provided that 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 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 (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, 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:
obtaining a first water temperature within the water storage device;
when a first water temperature in the water storage device meets a defrosting water temperature condition, controlling to enter a defrosting mode, 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;
when the air conditioner operates in the defrosting mode, acquiring a 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 a defrosting mode;
when the air conditioner exits the defrosting mode, the air conditioner restarts the heating device to heat the water in the water storage device by the heating device again so as to meet the defrosting water temperature condition again,
the defrosting mode comprises the step of starting the spraying device to spray and defrost the outdoor heat exchanger;
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 quantity condition comprises that the water quantity in the water storage device is larger than or equal to a set water quantity threshold value,
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 the set water quantity threshold is set to 1/4 of the total water quantity.
2. The control method according to claim 1, characterized by further comprising:
and when the second water temperature in the water storage device does not meet the preset defrosting water temperature condition, controlling to start the heating device.
3. 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 second water temperature in the water storage device.
4. The control method of claim 3, wherein said adjusting the heating power of the electric heating device based on the second water temperature in the water storage device comprises:
calculating a temperature difference between a second water temperature in the water storage device and the set water temperature threshold;
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.
5. 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 first acquisition module configured to acquire a first water temperature within the water storage device;
a defrosting control module configured to control entering a defrosting mode when a first water temperature in the water storage device satisfies a defrosting water temperature condition, the defrosting water temperature condition including that the water temperature in the water storage device is greater than or equal to a set water temperature threshold; when the air conditioner operates in the defrosting mode, acquiring a 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 a defrosting mode; when the air conditioner exits the defrosting mode, the air conditioner restarts the heating device to heat the water in the water storage device by the heating device again so as to meet the defrosting water temperature condition again,
the defrosting mode comprises the step of starting the spraying device to spray and defrost the outdoor heat exchanger;
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 the set water quantity threshold is set to 1/4 of the total water quantity.
6. 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 5.
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| 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 |
| JP6493370B2 (en) * | 2016-01-25 | 2019-04-03 | 株式会社デンソー | Heat pump system |
| CN107023937A (en) * | 2017-03-24 | 2017-08-08 | 珠海格力电器股份有限公司 | Control method, the device and system of air-conditioning |
| CN207922674U (en) * | 2018-02-01 | 2018-09-28 | 尚好科技有限公司 | Defrosting water circulation utilization system |
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Address after: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao 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: QINGDAO HAIER JOINT STOCK Co.,Ltd. |
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Effective date of registration: 20220531 Address after: No.1 Gangcheng South Road, Jiangbei District, Chongqing, 400026 Applicant after: CHONGQING 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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