CN110715414A - Air conditioner and control method and control system thereof - Google Patents
Air conditioner and control method and control system thereof Download PDFInfo
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- CN110715414A CN110715414A CN201910981593.7A CN201910981593A CN110715414A CN 110715414 A CN110715414 A CN 110715414A CN 201910981593 A CN201910981593 A CN 201910981593A CN 110715414 A CN110715414 A CN 110715414A
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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
- F24F11/70—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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner and a control method and a control system thereof, wherein the air conditioner comprises a plurality of indoor units and a plurality of throttling devices which correspond to the indoor units one by one, and the control method comprises the following steps: when an indoor unit with heating reaching a set temperature exists in the plurality of indoor units, judging whether a temperature reaching and overheating prevention entering condition is met; if yes, controlling the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically. The control method can effectively avoid the over-high temperature and even the protection of the indoor evaporator, can also avoid the over-high temperature of the indoor environment, and improves the reliability and the comfort level of the air conditioner on the premise of ensuring the oil return and the liquid return of the compressor.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a control method and a control system of an air conditioner and the air conditioner with the control system.
Background
At present, a multi-split air conditioner is common in the market and belongs to a big branch of split air conditioners. Because one-driving-more air conditioning system is large, when the system is operated during heating, after part of the internal machines reach the set temperature, in order to ensure the operation of oil return and liquid return, the electronic expansion valve of the corresponding temperature-reaching internal machine is required to keep a certain opening, so that the indoor environment temperature can be continuously increased after the set temperature is reached, and the comfort of customers is reduced.
In the related art, the problem of overhigh temperature after heating is achieved is solved by adopting a mode of reducing or stopping the wind speed of a motor in an air-conditioning room. Can reduce indoor ambient temperature to a certain extent, influence the comfortable nature experience of user to cause indoor evaporimeter temperature higher even overload protection easily.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, a first objective of the present invention is to provide a control method for an air conditioner, which can effectively avoid the temperature of an indoor evaporator from being too high or even protected through controlling a circulation switch of a throttling device, and can also avoid the temperature of an indoor environment from being too high, so as to improve the reliability and comfort level of the air conditioner on the premise of ensuring oil return and liquid return of a compressor.
A second object of the present invention is to provide a control system of an air conditioner.
A third object of the present invention is to provide an air conditioner.
A fourth object of the invention is to propose a computer-readable storage medium.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a control method for an air conditioner, where the air conditioner includes a plurality of indoor units and a plurality of throttling devices corresponding to the plurality of indoor units one by one, the control method including: when an indoor unit with heating reaching a set temperature exists in the plurality of indoor units, judging whether a temperature reaching and overheating prevention entering condition is met; if yes, controlling the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically.
According to the control method of the air conditioner, when an indoor unit with heating reaching a set temperature exists in a plurality of indoor units, whether a temperature reaching and overheating preventing entry condition is met is judged; if yes, controlling the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically. Therefore, the method can effectively avoid the over-high temperature of the indoor evaporator and even the protection, can also avoid the over-high temperature of the indoor environment, and improves the reliability and the comfort level of the air conditioner on the premise of ensuring the oil return and liquid return of the compressor.
In addition, the control method of the air conditioner proposed according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the judging whether the temperature-reaching overheat-preventing entry condition is met comprises the following steps: and acquiring air conditioner associated parameters, and judging whether the temperature-reaching anti-overheating entering conditions are met or not according to the air conditioner associated parameters.
According to an embodiment of the present invention, the air-conditioning related parameter includes at least one of an indoor ambient temperature, an outdoor ambient temperature, a compressor discharge temperature, and an indoor unit model, and the determining whether the temperature-reaching overheat entering prevention condition is satisfied according to the air-conditioning related parameter includes: if the indoor environment temperature, the outdoor environment temperature and/or the compressor exhaust temperature reach the corresponding temperature threshold, judging that the temperature reaching and overheating prevention entering condition is met; and/or if the machine type of the indoor unit is a preset machine type, judging that the temperature reaching and overheating entering preventing conditions are met.
According to an embodiment of the present invention, the controlling of the opening and closing of the throttling devices corresponding to at least some of the indoor units reaching the set temperature includes: judging whether the number of the indoor units reaching the set temperature is greater than the preset number or not; if yes, selecting the preset number of indoor units from the indoor units reaching the set temperature, and controlling the throttling devices corresponding to the selected preset number of indoor units to be opened and closed periodically, otherwise, controlling the throttling devices corresponding to all the indoor units reaching the set temperature to be opened and closed periodically.
According to an embodiment of the present invention, the selecting the preset number of indoor units from among the indoor units that reach the set temperature includes: and selecting the preset number of indoor units from the indoor units reaching the set temperature according to the indoor environment temperature and/or the indoor environment temperature change rate which correspond to the indoor units reaching the set temperature one by one.
In order to achieve the above object, a second aspect of the present invention provides a control system for an air conditioner, the air conditioner including a plurality of indoor units and a plurality of throttle devices corresponding to the plurality of indoor units one by one, the control system including: the judging module is used for judging whether the temperature reaching and overheating preventing entering conditions are met or not when the indoor units of the set greenhouse have heating effects; and the control module is used for controlling the throttling devices corresponding to at least one part of the indoor units reaching the set temperature to be periodically opened and closed when the judgment module judges that the temperature-reaching overheat-preventing entering condition is met.
According to the control system of the air conditioner, when the indoor units with heating reaching the set greenhouse exist in the plurality of indoor units, whether the temperature reaching and overheating preventing entering conditions are met or not is judged through the judging module; when the judging module judges that the temperature reaching and overheating preventing entry condition is met, the control module controls the throttling devices corresponding to at least one part of the indoor units reaching the set temperature to be periodically opened and closed. From this, this system can effectively avoid indoor evaporimeter high temperature protection even, still can avoid the excessive rise of indoor ambient temperature simultaneously, is guaranteeing to improve the reliability and the comfort level of air conditioner under the prerequisite that the liquid was returned to the compressor oil return.
In addition, the control system of the air conditioner proposed according to the above embodiment of the present invention may further have the following additional technical features:
according to one embodiment of the invention, the judging module is used for acquiring air conditioner associated parameters and judging whether the temperature reaching and overheating preventing entry conditions are met or not according to the air conditioner associated parameters.
According to an embodiment of the invention, the air-conditioning related parameters include at least one of an indoor environment temperature, an outdoor environment temperature, a compressor exhaust temperature and an indoor unit type, and the judging module is used for judging that the temperature-reaching and overheat-preventing entering condition is met when the indoor environment temperature, the outdoor environment temperature and/or the compressor exhaust temperature reach corresponding temperature thresholds; and/or judging that the temperature reaching and overheating entering preventing conditions are met when the type of the indoor unit is a preset type.
According to an embodiment of the present invention, the control module is configured to determine whether the number of indoor units reaching a set temperature is greater than a preset number, select the preset number of indoor units from the indoor units reaching the set temperature if the number of indoor units reaching the set temperature is greater than the preset number, and control throttling devices corresponding to the selected preset number of indoor units to be periodically opened and closed, otherwise, control throttling devices corresponding to all indoor units reaching the set temperature to be periodically opened and closed.
According to an embodiment of the present invention, the control module is configured to select the preset number of indoor units from the indoor units reaching the set temperature according to the indoor environment temperatures and/or the indoor environment temperature change rates of the indoor units reaching the set temperature in a one-to-one correspondence manner.
In order to achieve the above object, a third embodiment of the present invention provides an air conditioner, which includes a memory, a processor, and a control program of the air conditioner, which is stored in the memory and can be run on the processor, and when the processor executes the control program of the air conditioner, the control method of the air conditioner is implemented.
According to the air conditioner disclosed by the embodiment of the invention, by executing the control method of the air conditioner, the temperature of an indoor evaporator can be effectively prevented from being too high and even protected, meanwhile, the temperature of an indoor environment can be prevented from being excessively increased, and the reliability and the comfort degree of the air conditioner are improved on the premise of ensuring the oil return and liquid return of a compressor.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a control program for an air conditioner, which when executed by a processor implements the above-described air conditioner control method.
According to the computer-readable storage medium provided by the embodiment of the invention, by executing the air conditioner control method, the temperature of the indoor evaporator can be effectively prevented from being too high and even protected, meanwhile, the temperature of the indoor environment can be prevented from being excessively increased, and the reliability and the comfort degree of the air conditioner are improved on the premise of ensuring the oil return and liquid return of the compressor.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a block schematic diagram of a control system of an air conditioner according to an embodiment of the present invention; and
fig. 3 is a block schematic diagram of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A control method of an air conditioner, a control system of an air conditioner, and an air conditioner having the control system according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a control method of an air conditioner according to an embodiment of the present invention.
In one embodiment of the present invention, the air conditioner may include a plurality of indoor units and a plurality of throttle devices corresponding to the plurality of indoor units one to one. The throttle device can be an electronic expansion valve, a floating ball type expansion valve, a capillary tube, a throttle short tube, a manual expansion valve and the like, and the electronic expansion valve is used in a common air conditioner.
As shown in fig. 1, the control method of the air conditioner according to the embodiment of the present invention may include the steps of:
and S1, when the indoor units with heating reaching the set temperature exist in the plurality of indoor units, judging whether the temperature reaching anti-overheating entering condition is met. The temperature reaching and overheating prevention means that when the indoor ambient temperature of the indoor unit in heating operation reaches a set temperature, the indoor ambient temperature is prevented from being excessively increased.
And S2, if yes, controlling the throttle devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically.
Specifically, in the process of air conditioner operation (the air conditioner operates in a heating mode or a main heating mode, or operates in a mode with a heating indoor unit), the indoor environment temperature of the heating indoor unit is acquired in real time, whether the indoor environment temperature of the heating indoor unit reaches a set temperature is judged, if yes, whether the heating indoor unit reaching the set temperature meets a temperature-reaching overheat-preventing entry condition is further judged, and for example, when the indoor environment temperature of the heating indoor unit reaching the set temperature is greater than a certain value, the heating indoor unit is considered to meet the temperature-reaching overheat-preventing entry condition. When the indoor units for heating to reach the set temperature meet the temperature-reaching and overheating-preventing entry condition, controlling the throttle devices corresponding to at least one part of the indoor units (such as at least one indoor unit) for periodically opening and closing, for example, opening a first preset time according to a first set step number, then opening a second preset time according to a second set step number, and repeatedly executing the steps until the indoor environment temperature of the heating indoor units for reaching the set temperature is less than a certain value (wherein the first set step number, the second set step number, the first preset time and the second preset time can be calibrated according to actual conditions).
According to one embodiment of the invention, the judging whether the temperature-reaching overheat-preventing entry condition is met comprises the following steps: and acquiring air conditioner associated parameters, and judging whether the temperature-reaching and overheating-preventing entering conditions are met or not according to the air conditioner associated parameters.
Further, according to an embodiment of the present invention, the air-conditioning related parameter may include at least one of an indoor ambient temperature, an outdoor ambient temperature, a compressor discharge temperature, and an indoor unit model, and the determining whether the temperature-reaching overheat entering prevention condition is satisfied according to the air-conditioning related parameter includes: if the indoor environment temperature, the outdoor environment temperature and/or the compressor exhaust temperature reach the corresponding temperature threshold, judging that the temperature reaching and overheating prevention entering condition is met; and/or if the machine type of the indoor unit is a preset machine type, judging that the temperature reaching and overheating preventing entering conditions are met. The temperature threshold corresponding to the indoor environment temperature, the temperature threshold corresponding to the outdoor environment temperature, the temperature threshold corresponding to the compressor discharge temperature, and the predetermined model may be calibrated according to actual conditions, for example, the temperature threshold corresponding to the indoor environment temperature may be 24 ℃, the temperature threshold corresponding to the outdoor environment temperature may be 15 ℃, and the temperature threshold corresponding to the compressor discharge temperature may be 93 ℃.
Specifically, the air-conditioning related parameters are determined by corresponding sensors or a look-up table, for example, the indoor ambient temperature and the outdoor ambient temperature are obtained by temperature sensors, the compressor discharge temperature is obtained by a temperature sensor provided at a compressor discharge port, the model of the indoor unit is obtained by referring to a pre-stored table, and the like.
After the air conditioner relevant parameters are obtained, whether the indoor unit reaching the set temperature meets the temperature-reaching and overheat-preventing entering condition or not can be judged according to the indoor environment temperature, the outdoor environment temperature, the compressor exhaust temperature and the type of the indoor unit. For example, when the indoor ambient temperature is greater than or equal to the corresponding temperature threshold (e.g., 24 ℃), it is considered whether the indoor unit reaching the set temperature meets the temperature-reaching anti-overheating entry condition; for example, when the outdoor environment temperature is greater than or equal to the corresponding temperature threshold (such as 15 ℃), whether the indoor unit reaching the set temperature meets the condition of reaching the temperature and preventing the overheat entering is considered; if the exhaust temperature of the compressor is more than or equal to the corresponding temperature threshold (such as 93 ℃), determining whether the indoor unit reaching the set temperature meets the condition of reaching the temperature and preventing the overheat; for example, when the model of the indoor unit reaching the set temperature is a predetermined model, it is considered that the temperature-reaching overheat-entry-preventing condition is satisfied.
Similarly, whether the indoor unit reaching the set temperature meets the temperature-reaching and overheat-preventing entering condition can be judged according to the indoor environment temperature, the outdoor environment temperature, the compressor exhaust temperature and the mode of combining every two indoor unit models. Wherein, two pairwise mode of combination has six, include: indoor and outdoor ambient temperatures, indoor and compressor discharge temperatures, indoor ambient and model of indoor unit, outdoor ambient and compressor discharge temperatures, outdoor ambient and model of indoor unit, compressor discharge temperatures, and model of indoor unit. For example, when the indoor ambient temperature is greater than or equal to the corresponding temperature threshold (e.g., 24 ℃) and the outdoor ambient temperature is greater than or equal to the corresponding temperature threshold (e.g., 15 ℃), it is determined whether the indoor unit reaching the set temperature meets the temperature-reaching anti-overheating entry condition; for example, when the indoor environment temperature is greater than or equal to the corresponding temperature threshold (such as 24 ℃) and the compressor exhaust temperature is greater than or equal to the corresponding temperature threshold (such as 93 ℃), whether the indoor unit reaching the set temperature meets the condition of reaching the temperature and preventing the overheat entering is considered; for example, when the indoor environment temperature is equal to or higher than the corresponding temperature threshold (e.g., 24 ℃) and when the model of the indoor unit reaching the set temperature is a predetermined model, it is considered that the temperature-reaching overheat-preventing entry condition is satisfied.
It can be understood that whether the indoor unit reaching the set temperature meets the temperature-reaching and overheat-preventing entering condition can be judged according to the indoor environment temperature, the outdoor environment temperature, the compressor exhaust temperature and the combination of the three types of the indoor unit. Wherein, the mode of three combinations has four kinds, includes: indoor ambient temperature, outdoor ambient temperature, compressor discharge temperature, indoor ambient temperature, outdoor ambient temperature, model of indoor unit, internal ambient temperature, compressor discharge temperature, model of indoor unit, outdoor ambient temperature, compressor discharge temperature, model of indoor unit. For example, when the indoor ambient temperature is greater than or equal to the corresponding temperature threshold (e.g., 24 ℃), the outdoor ambient temperature is greater than or equal to the corresponding temperature threshold (e.g., 15 ℃) and the compressor discharge temperature is greater than or equal to the corresponding temperature threshold (e.g., 93 ℃), it is determined whether the indoor unit reaching the set temperature meets the temperature-reaching anti-overheating entry condition.
It should be noted that, whether the condition of reaching the temperature and preventing the overheat is met can be judged according to the capacity requirement of the heating indoor unit reaching the set temperature.
According to another embodiment of the present invention, the controlling of the throttle devices corresponding to at least some of the indoor units reaching the set temperature to be periodically opened and closed may include: judging whether the number of the indoor units reaching the set temperature is greater than the preset number or not; if so, selecting a preset number of indoor units from the indoor units reaching the set temperature, and controlling the throttling devices corresponding to the selected preset number of indoor units to be periodically opened and closed, otherwise, controlling the throttling devices corresponding to all the indoor units reaching the set temperature to be periodically opened and closed. The preset number may be calibrated according to an actual situation, for example, the preset number may be the number of the indoor units that are allowed to operate at the maximum.
In one embodiment of the present invention, selecting a preset number of indoor units from among the indoor units that reach a set temperature includes: and selecting a preset number of indoor units from the indoor units reaching the set temperature according to the indoor environment temperature and/or the indoor environment temperature change rate which correspond to the indoor units reaching the set temperature one by one.
Specifically, the number N of indoor units reaching the set temperature is judged once every Time period (Time _0) and is compared with the preset number Nmax, wherein when N is less than or equal to Nmax, the throttling devices corresponding to all the indoor units reaching the set temperature are controlled to be opened and closed periodically, for example, the opening degree of the throttling device corresponding to the indoor unit reaching the set temperature is controlled to be closed to 0 step firstly and lasts for T2 Time, then the opening degree of the throttling device is controlled to be opened to the set opening degree P step at a certain speed and lasts for T3 Time, and then the opening degree of the throttling device is controlled to be closed to 0 step and lasts for T2 Time; the process is circulated to the step of exiting to reach the temperature for preventing overheating.
When N is more than Nmax, sequencing the indoor environment temperature of each indoor unit reaching the set temperature (or sequencing the indoor environment temperature change rate, or sequencing the indoor environment temperature and the indoor environment temperature change rate) every T1 time period, judging the high and low of the indoor environment temperature (or sequencing the indoor environment temperature change rate, or sequencing the indoor environment temperature and the indoor environment temperature change rate), sequentially selecting a preset number Nmax of indoor units according to the high and low of the indoor environment temperature (or sequencing the indoor environment temperature change rate, or sequencing the indoor environment temperature and the indoor environment temperature change rate, wherein when the indoor units are selected according to the high and low of the indoor environment temperature and the indoor environment temperature change rate, a change threshold value can be set, for example, priority that the indoor environment temperature change is greater than the preset value and the indoor environment temperature change rate meets the preset value is satisfied), controlling the opening degree of the throttling devices corresponding to the selected preset number Nmax of indoor units to be periodically opened and closed, for example, controlling the opening degree of the throttling devices corresponding to the indoor units reaching the set temperature to be firstly closed to 0 step and lasting for T2 time, then controlling the opening degree of the throttling devices to be opened to the set opening degree P step at a certain speed and lasting for T3 time, and then controlling the opening degree of the throttling devices to be closed to 0 step and lasting for T2 time; the process is circulated to the step of exiting to reach the temperature for preventing overheating.
It should be noted that the indoor unit entering the temperature-reaching overheating-prevention control logic can be selected according to the indoor environment temperature and the indoor environment temperature change rate, and the indoor unit entering the temperature-reaching overheating-prevention control logic can also be selected according to the indoor coil temperature. Similarly, a preset number of indoor units can be directly selected according to the sequence of the indoor units without judging any condition.
In addition, when the indoor units reaching the set temperature meet the temperature-reaching overheat-preventing entry condition, the throttling devices corresponding to a part of the indoor units reaching the set temperature can be directly and periodically opened and closed, and the number of the indoor units reaching the set temperature can be judged according to the control logic, and the throttling devices corresponding to the indoor units reaching the set temperature can be periodically opened and closed according to the number.
In conclusion, the control method can avoid the over-high temperature of the indoor evaporator and even the protection of the indoor evaporator under the condition that the air speed of the indoor fan is not changed, can avoid the over-high temperature of the indoor environment, and improves the reliability and the comfort level of the air conditioner on the premise of ensuring the oil return and the liquid return.
In summary, according to the control method of the air conditioner in the embodiment of the present invention, when there is an indoor unit whose heating temperature reaches the set temperature among the plurality of indoor units, it is determined whether a temperature-reaching overheat-preventing entry condition is satisfied; if yes, controlling the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically. Therefore, the method can effectively avoid the over-high temperature of the indoor evaporator and even the protection, can also avoid the over-high temperature of the indoor environment, and improves the reliability and the comfort level of the air conditioner on the premise of ensuring the oil return and liquid return of the compressor.
Fig. 2 is a block schematic diagram of a control system of an air conditioner according to an embodiment of the present invention.
In one embodiment of the present invention, an air conditioner includes a plurality of indoor units and a plurality of throttle devices corresponding to the plurality of indoor units one to one.
As shown in fig. 2, the control system 100 of the air conditioner according to the embodiment of the present invention may include: a judgment module 10 and a control module 20.
The judging module 10 is configured to judge whether a temperature reaching and overheating preventing entry condition is met when an indoor unit that heats a set greenhouse exists among the indoor units. The control module 20 is configured to control the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to be periodically opened and closed when the determination module 10 determines that the temperature-reaching overheat-preventing entry condition is met.
According to an embodiment of the present invention, the determining module 10 is configured to obtain an air conditioner related parameter, and determine whether a temperature reaching and overheating preventing entry condition is satisfied according to the air conditioner related parameter.
According to an embodiment of the present invention, the air-conditioning related parameter may include at least one of an indoor ambient temperature, an outdoor ambient temperature, a compressor discharge temperature, and an indoor unit model, and the determining module 10 is configured to determine that a temperature reaching and overheat preventing entry condition is satisfied when the indoor ambient temperature, the outdoor ambient temperature, and/or the compressor discharge temperature reaches a corresponding temperature threshold; and/or judging that the temperature reaching and overheating entering preventing conditions are met when the type of the indoor unit is a preset type.
According to an embodiment of the present invention, the control module 20 is configured to determine whether the number of indoor units reaching the set temperature is greater than a preset number, and if so, select the preset number of indoor units from the indoor units reaching the set temperature and control the throttling devices corresponding to the selected preset number of indoor units to be periodically opened and closed, otherwise, control the throttling devices corresponding to all the indoor units reaching the set temperature to be periodically opened and closed.
According to an embodiment of the present invention, the control module 20 is configured to select a preset number of indoor units from the indoor units reaching the set temperature according to the indoor environment temperatures and/or the indoor environment temperature change rates of the indoor units reaching the set temperature in a one-to-one correspondence manner.
It should be noted that, for details that are not disclosed in the control system of the air conditioner in the embodiment of the present invention, please refer to details that are disclosed in the control method of the air conditioner in the embodiment of the present invention, and detailed description thereof is omitted here.
According to the control system of the air conditioner, when the indoor units with heating reaching the set greenhouse exist in the plurality of indoor units, whether the temperature reaching and overheating preventing entering conditions are met or not is judged through the judging module; when the judging module judges that the temperature reaching and overheating preventing entry condition is met, the control module controls the throttling devices corresponding to at least one part of the indoor units reaching the set temperature to be periodically opened and closed. From this, this system can effectively avoid indoor evaporimeter high temperature protection even, still can avoid the excessive rise of indoor ambient temperature simultaneously, is guaranteeing to improve the reliability and the comfort level of air conditioner under the prerequisite that the liquid was returned to the compressor oil return.
Fig. 3 is a block schematic diagram of an air conditioner according to an embodiment of the present invention.
As shown in fig. 3, the air conditioner 200 according to the embodiment of the present invention includes a memory 210, a processor 220, and an air conditioner control program stored in the memory 210 and operable on the processor 220, and when the processor 220 executes the air conditioner control program, the air conditioner control method is implemented.
According to the air conditioner disclosed by the embodiment of the invention, by executing the control method of the air conditioner, the temperature of an indoor evaporator can be effectively prevented from being too high and even protected, meanwhile, the temperature of an indoor environment can be prevented from being excessively increased, and the reliability and the comfort degree of the air conditioner are improved on the premise of ensuring the oil return and liquid return of a compressor.
In addition, an embodiment of the present invention also provides a computer-readable storage medium on which a control program of an air conditioner is stored, the control program of the air conditioner implementing the control method of the air conditioner described above when executed by a processor.
According to the computer-readable storage medium provided by the embodiment of the invention, by executing the air conditioner control method, the temperature of the indoor evaporator can be effectively prevented from being too high and even protected, meanwhile, the temperature of the indoor environment can be prevented from being excessively increased, and the reliability and the comfort degree of the air conditioner are improved on the premise of ensuring the oil return and liquid return of the compressor.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. A control method of an air conditioner, the air conditioner comprising a plurality of indoor units and a plurality of throttling devices corresponding to the plurality of indoor units one by one, the control method comprising:
when an indoor unit with heating reaching a set temperature exists in the plurality of indoor units, judging whether a temperature reaching and overheating prevention entering condition is met;
if yes, controlling the throttling devices corresponding to at least a part of the indoor units reaching the set temperature to open and close periodically.
2. The method of claim 1, wherein the determining whether the temperature-reaching overheat prevention condition is satisfied includes:
and acquiring air conditioner associated parameters, and judging whether the temperature-reaching anti-overheating entering conditions are met or not according to the air conditioner associated parameters.
3. The method for controlling the air conditioner according to claim 2, wherein the air conditioner related parameter includes at least one of an indoor ambient temperature, an outdoor ambient temperature, a compressor discharge temperature, and an indoor unit type, and the determining whether the temperature-reaching overheat-preventing entry condition is satisfied according to the air conditioner related parameter includes:
if the indoor environment temperature, the outdoor environment temperature and/or the compressor exhaust temperature reach the corresponding temperature threshold, judging that the temperature reaching and overheating prevention entering condition is met; and/or the presence of a gas in the gas,
and if the machine type of the indoor unit is a preset machine type, judging that the temperature reaching and overheating preventing entry conditions are met.
4. The method of claim 1, wherein the controlling of the throttle devices corresponding to at least some of the indoor units reaching the set temperature to be periodically opened and closed comprises:
judging whether the number of the indoor units reaching the set temperature is greater than the preset number or not;
if yes, selecting the preset number of indoor units from the indoor units reaching the set temperature, and controlling the throttling devices corresponding to the selected preset number of indoor units to be opened and closed periodically, otherwise, controlling the throttling devices corresponding to all the indoor units reaching the set temperature to be opened and closed periodically.
5. The method of claim 4, wherein the selecting the preset number of indoor units from among the indoor units reaching the set temperature includes:
and selecting the preset number of indoor units from the indoor units reaching the set temperature according to the indoor environment temperature and/or the indoor environment temperature change rate which correspond to the indoor units reaching the set temperature one by one.
6. A control system of an air conditioner, characterized in that the air conditioner comprises a plurality of indoor units and a plurality of throttling devices corresponding to the indoor units one by one, the control system comprises:
the judging module is used for judging whether the temperature reaching and overheating preventing entering conditions are met or not when the indoor units of the set greenhouse have heating effects;
and the control module is used for controlling the throttling devices corresponding to at least one part of the indoor units reaching the set temperature to be periodically opened and closed when the judgment module judges that the temperature-reaching overheat-preventing entering condition is met.
7. The control system of claim 6, wherein the determining module is configured to obtain an air-conditioning related parameter, and determine whether the temperature-reaching overheat-preventing entry condition is satisfied according to the air-conditioning related parameter.
8. The control system of the air conditioner according to claim 7, wherein the air conditioner related parameters include at least one of an indoor environment temperature, an outdoor environment temperature, a compressor discharge temperature and an indoor unit type, and the judgment module is configured to judge that the temperature-reaching anti-overheating entering condition is met when the indoor environment temperature, the outdoor environment temperature and/or the compressor discharge temperature reach corresponding temperature thresholds; and/or judging that the temperature reaching and overheating entering preventing conditions are met when the type of the indoor unit is a preset type.
9. The control system of claim 6, wherein the control module is configured to determine whether the number of indoor units reaching the set temperature is greater than a preset number, and if so, select the preset number of indoor units from the indoor units reaching the set temperature and control the throttling devices corresponding to the selected preset number of indoor units to be periodically opened and closed, otherwise, control the throttling devices corresponding to all the indoor units reaching the set temperature to be periodically opened and closed.
10. The system of claim 9, wherein the control module is configured to select the preset number of indoor units from the indoor units reaching the set temperature according to the indoor ambient temperatures and/or the indoor ambient temperature change rates of the indoor units reaching the set temperature in a one-to-one correspondence manner.
11. An air conditioner, comprising a memory, a processor and a control program of the air conditioner stored in the memory and operable on the processor, wherein the processor implements the control method of the air conditioner according to any one of claims 1 to 5 when executing the control program of the air conditioner.
12. A computer-readable storage medium on which a control program of an air conditioner is stored, characterized in that the control program of the air conditioner realizes the control method of the air conditioner according to any one of claims 1 to 5 when executed by a processor.
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