CN112594823A - Air conditioner defrosting control method and device and air conditioner - Google Patents
Air conditioner defrosting control method and device and air conditioner Download PDFInfo
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- CN112594823A CN112594823A CN202110092919.8A CN202110092919A CN112594823A CN 112594823 A CN112594823 A CN 112594823A CN 202110092919 A CN202110092919 A CN 202110092919A CN 112594823 A CN112594823 A CN 112594823A
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—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
- F24F11/67—Switching between heating and cooling modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
- F24F2221/183—Details or features not otherwise provided for combined with domestic apparatus combined with a hot-water boiler
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
According to the defrosting control method and device for the air conditioner and the air conditioner, provided by the invention, by combining the defrosting device and the air conditioner with the defrosting control method, the frosting degree of the outdoor heat exchanger when the air conditioner receives a shutdown signal can be accurately judged, and then whether defrosting is needed firstly and then shutdown is judged, so that the problems that the outdoor heat exchanger runs with frost when the air conditioner is started for heating next time, the heating effect is poor, electric energy is wasted, and a compressor is damaged due to accumulation are completely avoided, meanwhile, the heating effect is improved, the electric energy is avoided being wasted, and the safe running of the air conditioner is protected.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method and device and an air conditioner.
Background
When the air conditioner is in heating operation in winter and the outdoor environment temperature is low, the outdoor heat exchanger frosts to different degrees, so that the air conditioner can be automatically switched to a defrosting mode to melt the frost layer on the outdoor heat exchanger after a certain time interval. However, when the outdoor heat exchanger frosts seriously, but the air conditioner does not enter the defrosting mode, the air conditioner receives a shutdown signal, if the outdoor environment temperature is low, the frost layer on the outdoor heat exchanger cannot be melted automatically after shutdown, when the air conditioner is started for heating next time, because the frost layer is accumulated on the outdoor heat exchanger, the heating effect is poor, even because the frost layer is accumulated with higher speed, the later defrosting is not clean, the human body comfort is affected, and the electric energy is wasted, and the compressor can be started or a liquid refrigerant is sucked into the compressor in the running process to burn the compressor in serious cases.
At present, most air conditioners have no measures for solving the problems, the frosting degree of the outdoor heat exchanger before the air conditioner is shut down is judged by using the outlet temperature of the outdoor heat exchanger in the prior art, and then whether the air conditioner is shut down after defrosting is firstly carried out according to the frosting degree, and then the air conditioner is shut down.
Disclosure of Invention
The invention aims to provide an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner, which are used for judging whether defrosting is carried out before shutdown according to different frosting degrees and outdoor environment temperature, so that the problems of poor heating effect, electric energy waste and compressor damage caused by frost layer accumulation on an outdoor heat exchanger during next startup heating are avoided.
In order to achieve the above object, the present invention provides a defrosting control method for an air conditioner, comprising the steps of:
step S1: receiving a shutdown operation signal when the air conditioner operates in a heating mode;
step S2: acquiring indoor unit air outlet temperature Ta1 at the moment before an air conditioner receives a shutdown operation signal in the heating mode operation and acquiring the minimum value Ta0 of the indoor unit air outlet temperature in the preset time after the heating startup operation;
step S3: judging the relation between the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature and a first preset parameter delta Ta, and performing step S4 if a first condition is met, or performing step S6 if a second condition is met;
step S4: judging the magnitude relation between the outdoor environment temperature T before the air conditioner receives the stop signal and the preset T0, if the third condition is met, performing the step S5, and if the fourth condition is met, performing the step S6;
step S5: the air conditioner is switched to a defrosting mode to operate;
step S6: and controlling the air conditioner to shut down.
According to the invention, the preset time is any time between 1 and 15 minutes.
According to the invention, the preset temperature value is any temperature value between-2 ℃ and 4 ℃.
According to the invention, the first condition is that the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature is more than or equal to a first preset parameter delta Ta.
According to the invention, the second condition is that the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature is smaller than the first preset parameter Δ Ta.
According to the present invention, the third condition is that the outdoor ambient temperature T is equal to or less than a preset temperature value T0.
According to the present invention, the fourth condition is that the outdoor ambient temperature T is greater than a preset temperature value T0.
The invention also provides an air conditioner defrosting control device, which comprises:
the air supply motor is used for driving the fan blades to rotate;
the fan blade is used for providing necessary air volume for the outdoor heat exchanger;
the temperature detection module is used for detecting the outdoor environment temperature and the indoor unit air outlet temperature;
the storage module is used for storing the air outlet temperature of the indoor unit, the first preset parameter and the preset outdoor environment temperature comparison value detected by the temperature detection module in real time;
and the central processing unit is used for comparing the detected air outlet temperature of the indoor unit before the shutdown and the lowest value of the air outlet temperature of the indoor unit in a period of time of the heating startup operation and controlling the air conditioner.
The invention also provides an air conditioner, which comprises a computer readable storage medium and a processor, wherein the computer readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the defrosting control method.
The present invention also provides a computer-readable storage medium storing a computer program, which when read and executed by a processor, implements the defrost control method as described above.
Compared with the prior art, the technical scheme of the invention has the advantages that the defrosting control method, the defrosting control device and the air conditioner provided by the invention can realize the accurate judgment of the frosting degree of the outdoor heat exchanger when the air conditioner receives a shutdown signal by utilizing the defrosting device and the air conditioner in combination with the defrosting control method, so as to judge whether the air conditioner needs to be defrosted firstly and then shut down, completely avoid the possibility of poor heating effect, electric energy waste and compressor damage caused by accumulation due to frosted running of the outdoor heat exchanger when the air conditioner is started for heating next time, and simultaneously improve the heating effect, avoid the electric energy waste and protect the safe running of the air conditioner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a defrost control method according to an embodiment of the present invention;
FIG. 2 is a block diagram of a defrost control apparatus according to an embodiment of the present invention;
fig. 3 is a block diagram illustrating an air conditioner according to an embodiment of the present invention.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "including" and "having," and any variations thereof, in the description and claims of embodiments of the present disclosure and the above-described drawings are intended to cover non-exclusive inclusions.
In the prior art, the frosting degree of the outdoor heat exchanger before the shutdown is judged by using the outlet temperature of the outdoor heat exchanger, although the frosting condition of the outdoor heat exchanger can be solved, certain air conditioners have no outlet temperature sensor of the outdoor heat exchanger, and the limitation of the use condition is obvious. The invention provides another new method for solving the problems, which can also accurately judge the frosting degree of the outdoor heat exchanger when the air conditioner receives a shutdown signal, further judge whether the air conditioner needs to be defrosted firstly and then shut down, completely avoid the frosted operation of the outdoor heat exchanger when the air conditioner is started for heating next time, improve the heating effect and protect the safe operation of the air conditioner.
The invention provides a defrosting control method of an air conditioner, which comprises the following steps as shown in figure 1:
step S1: receiving a shutdown operation signal when the air conditioner operates in a heating mode;
step S2: acquiring indoor unit air outlet temperature Ta1 at the moment before an air conditioner receives a shutdown operation signal in the heating mode operation and acquiring the minimum value Ta0 of the indoor unit air outlet temperature in the preset time after the heating startup operation;
step S3: judging the relation between the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature and a first preset parameter delta Ta, and performing step S4 if a first condition is met, or performing step S6 if a second condition is met;
step S4: judging the magnitude relation between the outdoor environment temperature T before the air conditioner receives the stop signal and the preset T0, if the third condition is met, performing the step S5, and if the fourth condition is met, performing the step S6;
step S5: the air conditioner is switched to a defrosting mode to operate;
step S6: and controlling the air conditioner to shut down.
This application is through before the air conditioner receives the shutdown signal, acquire the indoor set air-out temperature of the moment before shutting down, and acquire the minimum of the indoor set air-out temperature of the time of predetermineeing after the operation of the start of heating, according to the data that acquire, the minimum that goes to judge indoor set air-out temperature subtracts the difference that indoor set air-out temperature reachs and first preset parameter size relation, thereby can directly perceivedly reflect outdoor heat exchanger's the degree of frosting, further through the size relation of outdoor ambient temperature and predetermined temperature value, can judge whether need get into the defrosting mode according to outdoor ambient temperature more accurately, thereby the condition that outdoor heat exchanger took the frost operation to appear when having avoided the start to heat next time.
Specifically, the preset time is any time between 1 and 15 minutes.
Specifically, the preset temperature value is any temperature value between-2 ℃ and 4 ℃.
Specifically, the first condition is that a difference obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature is greater than or equal to a first preset parameter Δ Ta.
Specifically, the second condition is that a difference value obtained by subtracting the indoor unit air outlet temperature Ta1 from the minimum value Ta0 of the indoor unit air outlet temperature is smaller than a first preset parameter Δ Ta.
Specifically, the third condition is that the outdoor environment temperature T is less than or equal to a preset temperature value T0.
Specifically, the fourth condition is that the outdoor environment temperature T is greater than a preset temperature value T0.
On the other hand, the invention also provides an air conditioner defrosting control device, which comprises:
the air supply motor is used for driving the fan blades to rotate;
the fan blade is used for providing necessary air volume for the outdoor heat exchanger;
the temperature detection module is used for detecting the outdoor environment temperature and the indoor unit air outlet temperature;
the storage module is used for storing the air outlet temperature of the indoor unit, the first preset parameter and the preset outdoor environment temperature comparison value detected by the temperature detection module in real time;
and the central processing unit is used for comparing the detected air outlet temperature of the indoor unit before the shutdown and the lowest value of the air outlet temperature of the indoor unit in a period of time of the heating startup operation and controlling the air conditioner.
In another aspect, the present invention further provides an air conditioner, which includes a computer-readable storage medium storing a computer program and a processor, where the computer program is read by the processor and executed by the processor to implement the defrosting control method as described above.
Therefore, when the air conditioner receives a shutdown signal when the air conditioner operates in a heating mode, the air conditioner judges the frosting degree of the outdoor heat exchanger according to the relation between the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 at the moment before shutdown from the minimum value Ta0 of the indoor unit air outlet temperature and the preset parameter delta Ta, and then judges whether defrosting is carried out before shutdown or not according to the difference of the frosting degree and the outdoor environment temperature, so that the possibility that the heating effect is poor, electric energy is wasted and the compressor is damaged due to frost layer accumulation on the outdoor heat exchanger when the air conditioner is started for heating next time is avoided.
In another aspect, the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is read and executed by a processor, the computer program implements the defrosting control method as described above.
Therefore, when the air conditioner receives a shutdown signal when the air conditioner operates in a heating mode, the air conditioner judges the frosting degree of the outdoor heat exchanger according to the relation between the difference value obtained by subtracting the indoor unit air outlet temperature Ta1 at the moment before shutdown from the minimum value Ta0 of the indoor unit air outlet temperature and the preset parameter delta Ta, and then judges whether defrosting is carried out before shutdown or not according to the difference of the frosting degree and the outdoor environment temperature, so that the possibility that the heating effect is poor, electric energy is wasted and the compressor is damaged due to frost layer accumulation on the outdoor heat exchanger when the air conditioner is started for heating next time is avoided.
The technical solution of the embodiment of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be an air conditioner, a refrigeration device, a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the embodiment of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The defrosting control device of the air conditioner can execute the defrosting control method, can effectively select the corresponding mode according to the judgment on the defrosting condition, effectively improves the defrosting flexibility of the air conditioner, reduces the frost layer on the outdoor heat exchanger before the air conditioner is turned off, completely avoids the operation of the outdoor heat exchanger with frost when the air conditioner is turned on and heated next time, improves the use comfort of users, improves the heating effect, avoids electric energy waste and also protects the safe operation of the air conditioner.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a defrosting does not shut down and allies oneself with online hot-water heating system which characterized in that includes:
the outdoor unit comprises a compressor (1), a high-pressure sensor (2), an oil separator (3), a first switching device (4), a second switching device (5), a third switching device (6), a fin heat exchanger (7), a compressor heat dissipation module (8), a plate heat exchanger (9), a first throttling device (10), a second throttling device (11), a third throttling device (12), an outdoor unit fan (14) and a phase change heat storage module (15) with a heat storage function, wherein the outdoor unit further comprises an outdoor unit environment temperature sensor (16) for detecting the outdoor unit environment temperature in real time and a phase change heat storage module temperature sensor (17) for detecting the temperature of the phase change heat storage module (15) in real time;
at least one indoor unit comprises an indoor unit heat exchanger (18), a fourth throttling device, an indoor unit fan (19) and an indoor unit environment temperature sensor (20) for detecting the environment temperature of the indoor unit in real time, wherein the indoor unit heat exchanger (18) is also provided with a temperature sensor (21) for detecting the middle part of the indoor unit heat exchanger in real time and an indoor unit heat exchanger outlet temperature sensor (22);
the hydraulic module comprises a refrigerant water heat exchanger (23), a water pump (24), a water flow switch (25), an electromagnetic valve (26) and a water temperature detection sensor (27).
2. A non-stop defrosting multi-online hot water system as claimed in claim 1, further comprising a liquid side stop valve (28), a gas side stop valve (29) and a hydraulic module stop valve (30) which are externally connected to the outdoor unit.
3. A non-stop defrosting multi-online hot water system as claimed in claim 2, wherein the liquid side stop valve (28) is connected with an indoor unit liquid pipe and a hydraulic module liquid pipe.
4. A multi-online hot water system for defrosting without shutdown as claimed in claim 2, characterized in that the air side stop valve (29) is connected with an indoor unit air pipe.
5. A non-stop defrosting multi-online hot water system according to claim 2, wherein the hydro module stop valve (30) is connected with a hydro module air pipe.
6. A non-stop defrosting multi-online hot water system according to claim 1, wherein the first throttling device (10), the second throttling device (11), the third throttling device (12) and the fourth throttling device (13) are all electronic expansion valves.
7. A multi-split hot water system without shutdown for defrosting according to claim 1, wherein the first switching device (4), the second switching device (5) and the third switching device (6) are four-way valves.
8. A non-stop defrosting multi-online hot water system as claimed in claim 1, wherein the compressor (1) is a variable frequency compressor, a fixed speed compressor or a digital compressor.
9. A control method for a multi-online hot water system for defrosting without shutdown as claimed in claims 1 to 8, wherein the operation modes of the outdoor unit, the indoor unit and the hydraulic module include a cooling mode, a heating mode, a standby mode and a defrosting mode, and the operation of each component in the outdoor unit, the indoor unit and the hydraulic module can be adjusted respectively according to the operation mode of the system:
when the indoor unit and the hydraulic module are in standby, the temperature of an outdoor unit environment temperature sensor (16) T4 is checked, and when the environment temperature is lower than TS2, the standby heat storage mode is entered by default, namely, a first switching device (4) is in a power-off state, a second switching device (5) is in a power-on state, and a third switching device (6) is in a power-off state;
when the indoor unit is in a cooling mode and enters a heating mode through water power, the phase change heat storage module (15) starts to store heat, and at the moment, the first switching device (4) is in a power-off state, the second switching device (5) is in a power-on state, and the third switching device (6) is in a power-off state;
when the outdoor unit is defrosted, the second throttling device (11) is opened to the maximum opening 480P, and the first switching device (4) is in a power-off state, the second switching device (5) is in a power-off state, and the third switching device (6) is in a power-on state;
when the indoor unit is standby and the hydraulic module enters a heating mode to heat water, the phase change heat storage module (15) starts to store heat, and the first switching device (4) is in a power-off state, the second switching device (5) is in a power-on state, and the third switching device (6) is in a power-off state;
when the outdoor unit is defrosted, the second throttling device (11) is opened to the maximum opening 480P. The hydraulic module keeps heating when the first switching device (4) is in a power-off state, the second switching device (5) is in a power-off state, and the third switching device (6) is in a power-on state.
When the indoor unit is in a heating mode and the hydraulic module also heats water, the phase change heat storage module (15) starts to store heat, and the first switching device (4) is in a power-on state, the second switching device (5) is in a power-on state, and the third switching device (6) is in a power-off state;
when the outdoor unit is defrosted, the second throttling device (11) is opened to the maximum opening 480P. A first switching device (4) is powered on, a second switching device (5) is powered off, and a third switching device (6) is powered on;
when the indoor unit is in a heating mode, the phase change heat storage module (15) starts to store heat. At the moment, the first switching device (4) is in a power-on state, the second switching device (5) is in a power-on state, and the third switching device (6) is in a power-off state;
when the outdoor unit is defrosted, the second throttling device (11) is opened to the maximum opening 480P. The power-on state of the first switching device (4), the power-off state of the second switching device (5) and the power-on state of the third switching device (6) are unchanged, and the running state of the internal machine is unchanged.
10. A control method for a multi-online hot water system for defrosting without shutdown as claimed in claim 9, characterized in that the value measured by the indoor unit ambient temperature sensor (20) is defined as T1, the value measured by the indoor unit heat exchanger middle temperature sensor (21) is defined as T2, the value measured by the indoor unit heat exchanger outlet temperature sensor (22) is defined as T2B, the value measured by the phase change heat storage module temperature sensor (17) is defined as T9, and the value measured by the outdoor unit ambient temperature sensor (16) is defined as T4.
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| CN202110092919.8A CN112594823A (en) | 2021-01-25 | 2021-01-25 | Air conditioner defrosting control method and device and air conditioner |
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| CN202110092919.8A CN112594823A (en) | 2021-01-25 | 2021-01-25 | Air conditioner defrosting control method and device and air conditioner |
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| CN102878663A (en) * | 2011-07-15 | 2013-01-16 | 珠海格力电器股份有限公司 | Air conditioning system capable of improving heating effect and defrosting control method thereof |
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