CN112212467B - Air conditioner control method and device and air conditioning unit - Google Patents
Air conditioner control method and device and air conditioning unit Download PDFInfo
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- CN112212467B CN112212467B CN202011205228.6A CN202011205228A CN112212467B CN 112212467 B CN112212467 B CN 112212467B CN 202011205228 A CN202011205228 A CN 202011205228A CN 112212467 B CN112212467 B CN 112212467B
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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
- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses an air conditioner control method, an air conditioner control device and an air conditioner unit, wherein the method comprises the following steps: detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode; when the defrosting state is entered, detecting the operation parameters and the setting parameters of the indoor unit, and determining the priority of the indoor unit according to the operation parameters and the setting parameters; judging whether the air conditioner can meet the heating requirement or not; when the heating requirement cannot be met, controlling the indoor units according to the priority, and increasing the air outlet temperature of the indoor units with high priority; wherein the priority includes at least a high level and a low level. The invention solves the problem of poor indoor heating effect in a defrosting state in the continuous heating mode in the prior art, improves the heating air-out temperature and improves the comfort of users.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device and an air conditioning unit.
Background
At present, a multi-split system has various advantages because a plurality of outdoor unit modules can be installed in parallel, wherein one of the outdoor unit modules is capable of realizing a continuous heating function (i.e. the outdoor unit modules can be used for defrosting alternately, so that the indoor unit modules can be used for heating continuously).
Under the mode of heating in succession, if the condition that outer machine defrosting module capacity is big, the module capacity that heats is little, and the interior machine heats the start load big appears in the defrosting process, can make the indoor air-out temperature that heats the start machine interior machine low, and the heating effect is poor, and user's comfort level reduces.
Aiming at the problem of poor heating effect of indoor mechanism in defrosting state in continuous heating mode in the related art, no effective solution is provided at present.
Disclosure of Invention
The invention provides an air conditioner control method, an air conditioner control device and an air conditioning unit, and at least solves the problem that in the prior art, the indoor machine in a defrosting state is poor in heating effect in a continuous heating mode.
In order to solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided an air conditioner control method including: detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode; when the defrosting state is entered, detecting the operation parameters and the setting parameters of the indoor unit, and determining the priority of the indoor unit according to the operation parameters and the setting parameters; judging whether the air conditioner can meet the heating requirement or not; when the heating requirement cannot be met, controlling the indoor units according to the priority, and increasing the air outlet temperature of the indoor units with high priority; wherein the priority includes at least a high level and a low level.
Further, the operation parameters at least comprise starting-up duration; setting parameters at least comprises setting a target temperature; determining the priority of the indoor unit according to the operation parameters and the setting parameters, comprising the following steps: detecting the starting-up time length and the set target temperature of the indoor unit in the starting-up state; if the starting time is more than or equal to the preset minimum starting time or the set target temperature is more than or equal to a first preset temperature threshold, determining the priority of the indoor unit to be high; otherwise, the priority of the indoor unit is determined to be low.
Further, judge whether the air conditioner can satisfy the demand of heating, include: detecting whether the condensation capacity is larger than the evaporation capacity; if so, detecting the outlet air temperature of the indoor unit with the high priority; and judging whether the air conditioner can meet the heating requirement or not according to the air outlet temperature.
Further, detecting whether the condensation capacity is greater than the evaporation capacity includes: detecting the capacity A of an outdoor unit in a defrosting state, the capacity B of an indoor unit in a heating state and the capacity C of the outdoor unit in the heating state; judging whether the capacity A of the outdoor unit in a defrosting state, the capacity B of the indoor unit in a heating state and the capacity C of the outdoor unit in a heating state satisfy the following relational expression: a + B is more than or equal to kC; wherein k is a coefficient; if so, it is determined that the condensing capacity is greater than the evaporating capacity.
Further, judge according to the air-out temperature whether the air conditioner can satisfy the demand of heating, include: judging whether the minimum value of the outlet air temperature is greater than or equal to a second preset temperature threshold value or not; if so, determining that the air conditioner can meet the heating requirement; otherwise, determining that the air conditioner can not meet the heating requirement.
Furthermore, the indoor unit is controlled according to the priority, and the outlet air temperature of the indoor unit with the high priority is improved, and the method comprises the following steps: and controlling the indoor units with low priorities to shut down in sequence until the high voltage of the system is greater than or equal to a preset high voltage threshold.
Further, after the indoor units with the low control priority are sequentially powered off, the method further includes: the opening degree of the electronic expansion valve of the indoor unit with the high control priority is increased.
Further, controlling the indoor units according to the priority, and increasing the outlet air temperature of the indoor unit with the high priority, further comprises: judging whether the minimum value of the outlet air temperature is greater than or equal to a third preset temperature threshold value or not; wherein the third preset temperature threshold is greater than the second preset temperature threshold; if yes, the indoor unit with the high priority is controlled to increase the fan rotating speed.
Further, the air conditioning unit is a heat pump unit or a heat recovery unit.
Further, when the air conditioning unit is a heat recovery unit, after controlling the indoor units according to the priority and increasing the outlet air temperature of the indoor unit with the higher priority, the method further includes: detecting the shutdown duration of a shutdown indoor unit; and when the shutdown duration is greater than or equal to the preset minimum shutdown time, controlling the shutdown indoor unit to enter a refrigeration mode.
According to another aspect of the embodiments of the present invention, there is provided an air conditioning control apparatus including: the detection module is used for detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode; the determining module is used for detecting the operation parameters and the setting parameters of the indoor unit when the defrosting state is entered, and determining the priority of the indoor unit according to the operation parameters and the setting parameters; the judging module is used for judging whether the air conditioner can meet the heating requirement or not; the control module is used for controlling the indoor units according to the priority when the heating requirements cannot be met, and improving the air outlet temperature of the indoor units with the high priority; wherein the priority includes at least a high level and a low level.
According to another aspect of the embodiment of the invention, an air conditioning unit is provided, which comprises the air conditioning control device.
According to still another aspect of an embodiment of the present invention, there is provided a storage medium containing computer-executable instructions for performing the air conditioning control method as described above when executed by a computer processor.
In the invention, for a multi-split air conditioner system with a continuous heating function, when the multi-split air conditioner system enters a defrosting state, the priority of an indoor unit is determined by detecting the operation parameters and the setting parameters of the indoor unit. When the air conditioner is judged not to be capable of meeting the heating requirement, the indoor units are controlled according to the priority, and the air outlet temperature of the indoor unit with the high priority is increased, so that the heating air outlet temperature is increased, the comfort level of a user is improved, and the problem that the indoor unit in a defrosting state is poor in heating effect in a continuous heating mode is effectively solved.
Drawings
Fig. 1 is an alternative flowchart of an air conditioner control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an alternative configuration of a heat pump unit according to an embodiment of the present invention;
FIG. 3 is an alternative flow chart of a heat pump unit control method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative configuration of a heat recovery unit according to an embodiment of the present invention;
FIG. 5 is an alternative flow chart of a heat recovery unit control method according to an embodiment of the present invention; and
fig. 6 is a block diagram of an alternative configuration of an air conditioning control apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Example 1
In preferred embodiment 1 of the present invention, there is provided an air conditioner control method, which can be directly applied to a heat pump unit or applied to a heat recovery unit. In particular, fig. 1 shows an alternative flow chart of the method, which, as shown in fig. 1, comprises the following steps S102-S108:
s102: detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode;
s104: when the defrosting state is entered, detecting the operation parameters and the setting parameters of the indoor unit, and determining the priority of the indoor unit according to the operation parameters and the setting parameters;
s106: judging whether the air conditioner can meet the heating requirement or not;
s108: when the heating requirement cannot be met, controlling the indoor units according to the priority, and increasing the air outlet temperature of the indoor units with high priority; wherein the priority includes at least a high level and a low level.
In the above embodiment, in the multi-split air conditioning system having the continuous heating function, when the defrosting state is entered, the priority of the indoor unit is determined by detecting the operation parameters and the setting parameters of the indoor unit. When the air conditioner is judged not to be capable of meeting the heating requirement, the indoor units are controlled according to the priority, and the air outlet temperature of the indoor unit with the high priority is increased, so that the heating air outlet temperature is increased, the comfort level of a user is improved, and the problem that the indoor unit in a defrosting state is poor in heating effect in a continuous heating mode is effectively solved.
Wherein the operation parameters at least comprise starting-up duration; setting parameters at least comprises setting a target temperature; determining the priority of the indoor unit according to the operation parameters and the setting parameters, comprising the following steps: detecting the starting-up time length and the set target temperature of the indoor unit in the starting-up state; if the starting time is more than or equal to the preset minimum starting time or the set target temperature is more than or equal to a first preset temperature threshold, determining the priority of the indoor unit to be high; otherwise, the priority of the indoor unit is determined to be low. The first preset temperature threshold is used for distinguishing a high priority from a low priority, the high priority refers to an internal machine in a starting state, both the starting time and the set temperature meet requirements (namely the set target temperature is greater than or equal to the first preset temperature threshold, and the set target temperature is greater than or equal to the first preset temperature threshold), and the room is a room with high heating requirements by default, and the starting state and the air outlet temperature of the internal machine are guaranteed preferentially. Low priority: the indoor units are in a starting state, the starting time and the set temperature do not meet the judgment requirement (namely the set target temperature is less than a first preset temperature threshold, the set target temperature is greater than or equal to the first preset temperature threshold), the indoor units are defaulted to be rooms with low heating requirements, and the indoor units are turned off or dormant under certain conditions.
After determining the priority, judging whether the air conditioner can meet the heating requirement, including: detecting whether the condensation capacity is larger than the evaporation capacity; if so, detecting the outlet air temperature of the indoor unit with the high priority; and judging whether the air conditioner can meet the heating requirement or not according to the air outlet temperature.
Detecting whether the condensation capacity is greater than the evaporation capacity, comprising: detecting the capacity A of an outdoor unit in a defrosting state, the capacity B of an indoor unit in a heating state and the capacity C of the outdoor unit in the heating state; judging whether the capacity A of the outdoor unit in a defrosting state, the capacity B of the indoor unit in a heating state and the capacity C of the outdoor unit in a heating state satisfy the following relational expression: a + B is more than or equal to kC; wherein k is a coefficient; if so, it is determined that the condensing capacity is greater than the evaporating capacity. The preset temperature threshold of second is used for confirming whether air-out temperature satisfies the requirement, specifically, judges whether the air conditioner can satisfy the demand of heating according to air-out temperature, includes: judging whether the minimum value of the outlet air temperature is greater than or equal to a second preset temperature threshold value or not; if so, determining that the air conditioner can meet the heating requirement; otherwise, determining that the air conditioner can not meet the heating requirement.
In the continuous heating mode defrosting process, when the capacity of the condenser is larger than that of the evaporator, whether the heating requirement is met is further determined, and the air outlet temperature of the indoor unit in a part of high-priority heating states can be effectively improved through the control.
Controlling the indoor units according to the priority, and improving the air outlet temperature of the indoor units with the high priority, comprising the following steps: and controlling the indoor units with low priorities to shut down in sequence until the high voltage of the system is greater than or equal to a preset high voltage threshold.
Meanwhile, when the internal machine with low priority is closed, the method also comprises the following control steps: the opening degree of the electronic expansion valve of the indoor unit with the high control priority is increased.
Controlling the indoor units according to the priority, and improving the outlet air temperature of the indoor units with the high priority, further comprising: judging whether the minimum value of the outlet air temperature is greater than or equal to a third preset temperature threshold value or not; and the third preset temperature threshold is used for determining whether the high-priority internal machine can meet the heat exchange requirement or not, and if not, the rotating speed of the fan can not be continuously increased. Wherein the third preset temperature threshold is greater than the second preset temperature threshold; if yes, the indoor unit with the high priority is controlled to increase the fan rotating speed.
The above control can be used for heat pump units or heat recovery units.
Particularly, because the heat pump unit can realize simultaneous cooling and heating of different indoor units, in the heat recovery unit, the indoor units are controlled according to the priority, and after the outlet air temperature of the indoor unit with the high priority is increased, the following control can be performed: detecting the shutdown duration of a shutdown indoor unit; and when the shutdown duration is greater than or equal to the preset minimum shutdown time, controlling the shutdown indoor unit to enter a refrigeration mode. The priority of the indoor unit with high priority is further improved by cooling.
The indoor unit starting state priority is judged by detecting the starting time length and the set temperature of the indoor unit, and when the outdoor heating module is small in capacity in the continuous heating mode defrosting state, the indoor unit with low starting priority is temporarily closed or dormant, so that the refrigerant only exchanges heat in the indoor unit room with high priority, the heating air-out temperature is improved, and the user comfort level is improved.
Fig. 2 shows an alternative schematic structure diagram of a general heat pump system, and as shown in the drawing, a multi-split system capable of achieving continuous heating is provided, an outdoor system is composed of a plurality of outdoor unit modules, and the outdoor unit system includes a compressor, an oil separator, a main four-way valve (a heat recovery system includes an auxiliary four-way valve), an outdoor heat exchanger, a gas-liquid separator and other components.
The operation mode of the heat pump system is as follows:
when any outdoor module reaches the defrosting condition, the whole system enters a continuous heating defrosting state, defrosting is started from the main machine (module 1), and when the main machine enters defrosting, the modules 2 and 3 … continue heating. At the moment, a main four-way valve of the defrosting module is reversed, high-temperature and high-pressure gaseous refrigerants coming out of the compressor directly enter the outdoor heat exchanger for defrosting, and the low-temperature refrigerants after defrosting are collected by a liquid pipe and enter the low-pressure side of other heating modules for circulation; the heating module maintains a heating mode, high-temperature and high-pressure refrigerants enter the indoor unit for heat exchange, and the returned refrigerants enter the air pipe and enter the low-pressure side of the defrosting module for circulation.
When the defrosting of the main machine is finished, the defrosting is stopped, the normal heating is carried out, the sub machine 1 starts defrosting, and the control is continued. All modules are defrosted in sequence.
In relation to the heat pump system, another air conditioning control method is further provided in preferred embodiment 1 of the present invention, and specifically, fig. 3 shows an alternative flow chart of the method, as shown in fig. 3, the method includes the following steps:
when the system enters a defrosting state, the priority of the indoor unit is judged:
detecting the starting-up time t1 and the set target temperature y0 of all indoor units in the starting-up state;
and (3) judging:
when the starting time T1 is more than or equal to T1h (T1 is the reasonable set shortest starting time, such as 3 h); or the like, or, alternatively,
setting the target temperature Y0 to be more than or equal to Y1(Y1 is the limit value of the target temperature of the indoor unit, such as 27 ℃);
then, the flag bit of the indoor unit is high priority level 'H'; otherwise, the flag bit of the indoor unit is low priority level 'L'.
Setting the capacity of an outdoor module in a defrosting state as A, the capacity sum of indoor units in a heating and starting state as B, the capacity sum of outdoor modules in a heating state as C, the air outlet temperature sensing bulb temperatures of the indoor units in a high-priority starting state as Y1, Y2 and Y3 …, the air outlet temperature minimum value as Y2, the system high-pressure value as Z and the high-pressure value as Z:
when A + B is less than kC (wherein k is a coefficient and can be set according to a specific system state), the system keeps normal control;
when A + B is more than or equal to kC:
judging that the system continues normal operation when any one of { Y1, Y2 and Y3 … } is equal to or more than Y2;
when min { Y1, Y2, Y3 … } < Y2, the indoor units of the low-priority flag bit "L" enter a temporary state to be shut down (a fan is stopped, a wind screen is closed) one by one until the high pressure Z of the system is more than or equal to Z. The electronic expansion valve of the shutdown indoor unit keeps smaller opening, the electronic expansion valve of the high-priority indoor unit, particularly the indoor unit in a VIP mode, is opened greatly, and the air outlet temperature is increased;
in the process, when any one of Y1, Y2 and Y3 … is more than or equal to Y2+ a (a is a constant and a is more than 0), the rotating speed of the internal machine corresponding to the high-priority flag bit H is increased (the rotating speed is up to high-grade, and if the rotating speed is in high-grade, the rotating speed is kept unchanged). The system maintains this control until the next outdoor module defrost stage is entered.
When the defrosting of the next outdoor module is started, whether the capacity A + B is larger than or equal to kC is judged again.
When the whole system is out of defrosting for 3min, the system is out of the control.
In the defrosting process of the continuous heating mode, when the capacity of the condenser is larger than that of the evaporator, the capacity of the condenser is reduced through the control, and the air outlet temperature of the indoor unit in a part of high-priority heating states can be effectively increased.
Fig. 4 shows an alternative construction of the heat recovery system, which, as shown, operates in the following manner:
when any outdoor module reaches the defrosting condition, the whole system enters a continuous heating defrosting state, defrosting is started from the main machine (module 1), and when the main machine enters defrosting, the modules 2 and 3 … continue heating. At the moment, the main refrigeration four-way valve of the main machine is powered off, the refrigerant coming out of the compressor is divided into one path to the outdoor heat exchanger for defrosting (the defrosting module heat exchanger is used as a condenser at the moment), and the refrigerant is collected to the liquid pipe to enter other modules after passing through the heat exchanger. The other path of air pipe is joined with high-pressure gas refrigerant of other heating module outdoor unit pipelines and enters the indoor side for continuous heating.
When the defrosting of the main machine is finished, the defrosting is stopped, the normal heating is carried out, the sub machine 1 starts defrosting, and the control is continued. All modules are defrosted in sequence.
In addition, after the continuous heating mode is entered, when the system enters a defrosting state, the priority of the starting state of the internal machine is synchronously judged, and the high-priority starting state of the internal machine and the air outlet temperature control are preferentially kept. For the indoor unit with low priority, when the outlet air temperature is lower than a certain limit value, the indoor unit enters a shutdown state temporarily. Preferably, in the heat recovery system, the indoor unit of the unmanned room can be switched to the cooling mode.
In relation to the heat pump system, another air conditioning control method is further provided in preferred embodiment 1 of the present invention, specifically, fig. 5 shows an alternative flow chart of the method, and as shown in fig. 5, the method includes the following steps:
and judging the priority of the indoor unit.
Similarly, the outdoor module in defrosting is set as a module a with the largest capacity, the sum of the capacities of the indoor units in a heating and power-on state in a room is set as B, the sum of the capacities of the indoor units in heating is set as C, the indoor unit air-out temperature sensing bulb temperatures in the VIP mode are Y1, Y2 and Y3 …, and the air-out temperature minimum value is set as Y2:
when A + B is less than kC, the system keeps normal control;
when A + B is larger than or equal to kC, judging that:
when the { Y1, Y2, Y3 … } is equal to or more than Y2, the system continues normal operation;
when min { Y1, Y2, Y3 … } < Y2, the following actions are performed:
firstly, an indoor unit with a low priority flag bit L in a heating starting state enters a temporary dormant state (the indoor unit runs in a low windshield and an electronic expansion valve keeps a small opening degree), and an electronic expansion valve of the indoor unit in the L flag bit mode is opened greatly;
detecting the shutdown time T2 of the shutdown indoor unit, and when T2 is more than or equal to T2h (T2 is the condition for judging the shortest shutdown time of the indoor unit), the indoor unit is switched to a refrigeration mode and runs at a low windshield (as a condenser); otherwise, the power-off state is continuously kept.
The electronic expansion valve of the indoor unit at the 'H' mark position is opened greatly, so that the air outlet temperature is increased; in the process, when any one of Y1, Y2 and Y3 … is more than or equal to Y2+ a (a is a constant), the rotating speed of the high-priority internal machine is increased (the rotating speed is up to high-grade, and if the rotating speed is in high-grade, the rotating speed is kept unchanged). The system maintains this control until the next outdoor module defrost stage is entered.
When the defrosting of the next outdoor module is started, whether the capacity A + B is larger than or equal to kC is judged again.
When the whole system is out of defrosting for 3min, the system is out of the control.
The control can effectively improve the air outlet temperature of the indoor unit in the heating state with higher heating demand by reducing the capacity of the condenser and increasing the capacity of the evaporator.
Example 2
Based on the air conditioner control method provided in the above embodiment 1, there is also provided an air conditioner control device in a preferred embodiment 2 of the present invention, and specifically, fig. 6 shows an alternative structural block diagram of the device, and as shown in fig. 6, the device includes:
the detection module 602 is configured to detect whether the air conditioner enters a defrosting state when the air conditioner is in a continuous heating mode;
the determining module 604 is connected with the detecting module 602, and is used for detecting the operating parameters and the setting parameters of the indoor unit when the defrosting state is entered, and determining the priority of the indoor unit according to the operating parameters and the setting parameters;
the judging module 606 is connected with the determining module 604 and used for judging whether the air conditioner can meet the heating requirement;
the control module 608 is connected to the judging module 606, and is configured to control the indoor units according to the priorities when the heating requirements cannot be met, and increase the outlet air temperature of the indoor unit with the higher priority; wherein the priority includes at least a high level and a low level.
In the above embodiment, in the multi-split air conditioning system having the continuous heating function, when the defrosting state is entered, the priority of the indoor unit is determined by detecting the operation parameters and the setting parameters of the indoor unit. When the air conditioner is judged not to be capable of meeting the heating requirement, the indoor units are controlled according to the priority, and the air outlet temperature of the indoor unit with the high priority is increased, so that the heating air outlet temperature is increased, the comfort level of a user is improved, and the problem that the indoor unit in a defrosting state is poor in heating effect in a continuous heating mode is effectively solved.
With regard to the apparatus in the above embodiments, the specific manner in which each unit and each module performs operations has been described in detail in the embodiments related to the method, and will not be described in detail herein.
Example 3
Based on the air conditioning control device provided in the above embodiment 2, in a preferred embodiment 3 of the present invention, there is also provided an air conditioning unit including the air conditioning control device as described above.
In the above embodiment, in the multi-split air conditioning system having the continuous heating function, when the defrosting state is entered, the priority of the indoor unit is determined by detecting the operation parameters and the setting parameters of the indoor unit. When the air conditioner is judged not to be capable of meeting the heating requirement, the indoor units are controlled according to the priority, and the air outlet temperature of the indoor unit with the high priority is increased, so that the heating air outlet temperature is increased, the comfort level of a user is improved, and the problem that the indoor unit in a defrosting state is poor in heating effect in a continuous heating mode is effectively solved.
Example 4
Based on the air-conditioning control method provided in embodiment 1 above, there is also provided in preferred embodiment 4 of the present invention a storage medium containing computer-executable instructions for performing the air-conditioning control method as described above when executed by a computer processor.
In the above embodiment, in the multi-split air conditioning system having the continuous heating function, when the defrosting state is entered, the priority of the indoor unit is determined by detecting the operation parameters and the setting parameters of the indoor unit. When the air conditioner is judged not to be capable of meeting the heating requirement, the indoor units are controlled according to the priority, and the air outlet temperature of the indoor unit with the high priority is increased, so that the heating air outlet temperature is increased, the comfort level of a user is improved, and the problem that the indoor unit in a defrosting state is poor in heating effect in a continuous heating mode is effectively solved.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (13)
1. An air conditioner control method, comprising:
detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode;
when the defrosting state is entered, detecting the operation parameters and the setting parameters of the indoor unit, and determining the priority of the indoor unit according to the operation parameters and the setting parameters;
judging whether the air conditioner can meet the heating requirement or not;
when the heating requirement cannot be met, controlling the indoor unit according to the priority, and increasing the air outlet temperature of the indoor unit with the high priority; wherein the priority comprises at least a high level and a low level.
2. The method of claim 1, wherein the operating parameters include at least a boot-up duration; the set parameters at least comprise a set target temperature; determining the priority of the indoor unit according to the operation parameters and the setting parameters, comprising the following steps:
detecting the starting-up duration and the set target temperature of the indoor unit in a starting-up state;
if the starting-up time is more than or equal to a preset minimum starting-up time or the set target temperature is more than or equal to a first preset temperature threshold, determining the priority of the indoor unit to be high;
otherwise, determining the priority of the indoor unit to be low.
3. The method of claim 2, wherein determining whether the air conditioner can meet the heating requirement comprises:
detecting whether the condensation capacity is larger than the evaporation capacity;
if so, detecting the outlet air temperature of the indoor unit with the high priority;
and judging whether the air conditioner can meet the heating requirement or not according to the air outlet temperature.
4. The method of claim 3, wherein detecting whether the condensing capacity is greater than the evaporating capacity comprises:
detecting the capacity A of an outdoor unit in a defrosting state, the capacity B of an indoor unit in a heating state and the capacity C of the outdoor unit in the heating state;
judging whether the capacity A of the outdoor unit in the defrosting state, the capacity B of the indoor unit in the heating state and the capacity C of the outdoor unit in the heating state satisfy the following relational expression: a + B is more than or equal to kC; wherein k is a coefficient;
if so, determining that the condensing capacity is greater than the evaporating capacity.
5. The method of claim 3, wherein determining whether the air conditioner can meet a heating requirement according to the outlet air temperature comprises:
judging whether the minimum value of the outlet air temperature is greater than or equal to a second preset temperature threshold value or not;
if so, determining that the air conditioner can meet the heating requirement;
otherwise, determining that the air conditioner cannot meet the heating requirement.
6. The method of claim 2, wherein controlling the indoor units according to the priority to increase the outlet air temperature of the indoor unit having a higher priority comprises:
and controlling the indoor units with low priorities to shut down in sequence until the system high voltage is greater than or equal to a preset high voltage threshold.
7. The method as claimed in claim 6, further comprising, after the indoor unit of which the control priority is low is turned off in order:
and controlling the opening degree of the electronic expansion valve of the indoor unit with the high priority to be increased.
8. The method according to claim 5, wherein the controlling the indoor unit according to the priority to increase the outlet air temperature of the indoor unit having the higher priority further comprises:
judging whether the minimum value of the outlet air temperature is greater than or equal to a third preset temperature threshold value or not; wherein the third preset temperature threshold is greater than the second preset temperature threshold;
and if so, controlling the indoor unit with the high priority to increase the fan rotating speed.
9. The method of claim 1, wherein the air conditioning unit is a heat pump unit or a heat recovery unit.
10. The method according to claim 9, wherein, when the air conditioning unit is the heat recovery unit, after controlling the indoor unit according to the priority and increasing the outlet air temperature of the indoor unit having a higher priority, the method further comprises:
detecting the shutdown duration of a shutdown indoor unit;
and when the shutdown duration is greater than or equal to the preset minimum shutdown time, controlling the shutdown indoor unit to enter a refrigeration mode.
11. An air conditioning control device, characterized by comprising:
the detection module is used for detecting whether the air conditioner enters a defrosting state or not when the air conditioner is in a continuous heating mode;
the determining module is used for detecting the operation parameters and the setting parameters of the indoor unit when the defrosting state is entered, and determining the priority of the indoor unit according to the operation parameters and the setting parameters;
the judging module is used for judging whether the air conditioner can meet the heating requirement or not;
the control module is used for controlling the indoor units according to the priority when the heating requirements cannot be met, and improving the air outlet temperature of the indoor units with high priority; wherein the priority comprises at least a high level and a low level.
12. An air conditioning assembly characterized by comprising the air conditioning control device according to claim 11.
13. A storage medium containing computer-executable instructions for performing the air conditioning control method of any one of claims 1 to 10 when executed by a computer processor.
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| CN112902391B (en) * | 2021-03-08 | 2022-03-29 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioner, readable storage medium and multi-split air conditioner |
| CN113108433A (en) * | 2021-03-23 | 2021-07-13 | 珠海格力电器股份有限公司 | Control method of multi-split air conditioning system |
| WO2023161834A1 (en) * | 2022-02-23 | 2023-08-31 | Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A. | Control method of defrosting function in an air conditioning system |
| CN117346281B (en) * | 2023-12-04 | 2024-04-09 | 珠海格力电器股份有限公司 | Control method of air conditioning system, air conditioning system and storage medium |
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