CN113091235B - Air conditioner control method and device - Google Patents
Air conditioner control method and device Download PDFInfo
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- CN113091235B CN113091235B CN202010797560.XA CN202010797560A CN113091235B CN 113091235 B CN113091235 B CN 113091235B CN 202010797560 A CN202010797560 A CN 202010797560A CN 113091235 B CN113091235 B CN 113091235B
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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Abstract
The invention relates to an air conditioner control method and device, wherein a first opening value corresponding to the set temperature at a first moment is obtained according to a preset opening value table by obtaining the set temperature at the first moment, and whether the opening degree of a current expansion valve needs to be reduced or not is determined by comparing the first opening value with a target opening value of the last expansion valve; whether the current opening value needs to be gradually reduced is determined by judging whether the set temperature is larger than the second temperature interval between the first moment and the second moment, and after the second moment, the opening degree of the expansion valve is gradually reduced by taking a fourth value corresponding to the temperature interval adjacent to the second temperature interval as a target opening value after a period of time delay, so that the opening degree adjustment frequency of the expansion valve is reduced, and the stability and the service life of the air conditioning system are improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method and device.
Background
The existing air conditioner separates out the throttled gaseous refrigerant by arranging the flash evaporator and returns the gaseous refrigerant to the compressor so as to reduce the pressure loss of the compressor and improve the heat exchange efficiency of the heat exchanger.
The air conditioner monitors the working condition of the air conditioning system and compares the working condition with a set value, and controls the opening degree of an expansion valve between the condenser and the flash evaporator according to the comparison result so as to reduce the exhaust temperature of the compressor. In the process, the expansion valve frequently adjusts the opening degree, so that the stability and the service life of the air conditioning system are influenced.
Disclosure of Invention
The embodiment of the application provides an air conditioner control method and device, which can realize stable control of the opening of an expansion valve of an air-supplying enthalpy-increasing loop and ensure the stability of an air conditioning system. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides an air conditioner control method, which is applied to an air conditioner with an air make-up enthalpy increasing circuit, and includes the following steps:
acquiring a set temperature at a first moment; the set temperature is the working temperature of the air-replenishing enthalpy-increasing loop;
acquiring a first opening value corresponding to the set temperature at the first moment from a preset opening value table; the preset opening value table stores each temperature interval of the set temperature and the opening value of the expansion valve of each corresponding temperature interval;
acquiring a target opening value of the expansion valve in the last time as a second opening value;
if the first opening value is smaller than the second opening value, acquiring a second temperature interval corresponding to the second opening value from a preset opening value table;
acquiring a set temperature at a second moment;
acquiring a third opening value corresponding to the set temperature at the second moment from a preset opening value table;
if the third opening value is smaller than the second opening value and a time set temperature interval larger than the second temperature interval exists between the first time and the second time, acquiring the fourth opening value from a preset opening value table as a target opening value; the fourth opening value is smaller than the second opening value, and the fourth opening value is the opening value corresponding to the temperature interval adjacent to the second temperature interval;
adjusting the opening degree of the expansion valve to the target opening degree value; the expansion valve is used for adjusting the air supplement amount output to the compressor by the air supplement enthalpy increasing loop.
Optionally, after acquiring a third opening value corresponding to the set temperature at the second time from a preset opening value table, the method further includes:
and if the set temperature is always smaller than the second temperature interval between the first time and the second time, adjusting the opening degree of the expansion valve to the third opening degree value.
Optionally, after obtaining the target opening degree value of the expansion valve last time as the second opening degree value, the method further includes:
and if the first opening value is larger than the second opening value, adjusting the opening degree of the expansion valve to be the first opening value.
Optionally, the set temperature is one of an outdoor ambient temperature, a discharge temperature of the compressor, and a supercooling degree of the condenser;
before the set temperature at the first moment is acquired, the method further comprises the following steps:
acquiring the outdoor environment temperature;
acquiring a fifth opening value corresponding to the outdoor environment temperature from a preset opening value table;
if the fifth opening value is not equal to the second opening value, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, and acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table;
if the sixth opening value is not equal to the second opening value, taking the exhaust temperature of the compressor as a set temperature;
and if the fifth opening value and the sixth opening value are equal to the second opening value, acquiring the supercooling degree of the condenser, and taking the supercooling degree of the condenser as the set temperature.
Optionally, before the step of taking the outdoor environment temperature as the set temperature, the method further includes:
acquiring the exhaust temperature of a compressor, and acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table;
and if the fifth opening value and the sixth opening value are both larger than the second opening value, taking the exhaust temperature of the compressor as the set temperature.
Optionally, the step of obtaining the supercooling degree of the condenser includes:
acquiring a saturation temperature corresponding to the high pressure of the discharged air of the compressor and the temperature of the outlet of the condenser;
and subtracting the temperature of the outlet of the condenser from the saturation temperature corresponding to the high pressure of the discharged gas of the compressor to obtain the supercooling degree of the condenser.
In a second aspect, an embodiment of the present application provides an air conditioner control device, which is applied to an air conditioner with an air-supplying enthalpy-increasing loop, and includes:
the first temperature value acquisition module is used for acquiring the set temperature at the first moment; the set temperature is the working temperature of the air-replenishing enthalpy-increasing loop;
the first opening value acquisition module is used for acquiring a first opening value corresponding to the set temperature at the first moment from a preset opening value table; the preset opening value table stores each temperature interval of the set temperature and the opening value of the expansion valve of each corresponding temperature interval;
the second opening value acquisition module is used for acquiring the target opening value of the expansion valve at the last time as a second opening value;
a second temperature interval obtaining module, configured to obtain, if the first opening value is smaller than the second opening value, a second temperature interval corresponding to the second opening value from a preset opening value table;
the second temperature value acquisition module is used for acquiring the set temperature at the second moment;
the third openness value acquisition module is used for acquiring a third openness value corresponding to the set temperature at the second moment from a preset openness value table;
a target opening value obtaining module, configured to obtain a fourth opening value from a preset opening value table as a target opening value if the third opening value is smaller than the second opening value and a time-set temperature interval between the first time and the second time is greater than the second temperature interval; the fourth opening value is smaller than the second opening value, and the fourth opening value is the opening value corresponding to the temperature interval adjacent to the second temperature interval;
the opening degree adjusting module is used for adjusting the opening degree of the expansion valve to the target opening degree value; the expansion valve is used for adjusting the air supplement amount output to the compressor by the air supplement enthalpy increasing loop.
In a third aspect, an embodiment of the present application provides an air conditioner, including a compressor, an evaporator, a condenser, an expansion valve, a flash evaporator, and a controller;
the flash evaporator comprises a first interface, a second interface and a third interface, the first interface of the flash evaporator is connected with the air supplementing port of the compressor, and the second interface of the flash evaporator is connected with the input port of the evaporator;
the expansion valve is arranged between the condenser and a third interface of the flash evaporator;
the controller comprises a memory and a processor;
the memory for storing one or more programs;
when the one or more programs are executed by the processor, the processor is caused to implement the air conditioner control method as described in any one of the above.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the air conditioner control method according to any one of the above.
In a fifth aspect, an embodiment of the present application provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable by the processor, and when the processor executes the computer program, the steps of the air conditioner control method described in any one of the above are implemented.
In the embodiment of the application, a first time set temperature is obtained, a first opening value corresponding to the first time set temperature is obtained according to a preset opening value table, and whether the opening degree of the current expansion valve needs to be reduced or not is determined by comparing the first opening value with a last target opening value of the expansion valve; and after the second moment, a fourth value corresponding to a temperature interval adjacent to the second temperature interval is taken as a target opening value, the opening degree of the expansion valve is gradually reduced after a period of time is delayed, the opening degree adjustment frequency of the expansion valve is reduced, and the stability and the service life of the air conditioning system are improved.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
Fig. 1 is an application scenario of an air conditioner control method according to an exemplary embodiment of the present invention;
fig. 2 is a flowchart of an air conditioner control method according to an exemplary embodiment of the present invention;
FIG. 3 is a diagram illustrating temperature intervals in a preset opening value table according to an exemplary embodiment of the invention;
fig. 4 is a schematic structural view of an air conditioner control device according to an exemplary embodiment of the present invention;
fig. 5 is a schematic structural view of an air conditioner according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only some embodiments of the present application, and not all embodiments. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, belong to the scope of protection of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
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 application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The air conditioner control method provided by the embodiment of the application can be applied to an air conditioner provided with an air-supplying enthalpy-increasing loop and used for realizing the opening adjustment of the first expansion valve 30. As shown in fig. 1, the air conditioner includes a compressor 10, a condenser 20, a first expansion valve 30, a flash evaporator 40, a second expansion valve 50, and an evaporator 60, wherein the first expansion valve 30 is used to control the amount of refrigerant entering the flash evaporator 40, and the gaseous refrigerant in the flash evaporator 40 is output to an air supplement port of the compressor 10, so as to supplement medium-pressure gas to the compressor 10, reduce the exhaust temperature of the compressor 10, and improve the heat exchange capacity of the compressor 10.
In the prior art, the opening degree of the first expansion valve 30 is adjusted to adjust the air supplement amount output from the air supplement enthalpy increasing loop to the compressor 10, however, the opening degree of the first expansion valve 30 is frequently adjusted, which causes the frequency fluctuation of the system, which causes the instability of the air conditioning system, and at the same time, the refrigerant sound is easily generated, and the comfort of customers is reduced.
As shown in fig. 2, to solve the above technical problem, an embodiment of the present application provides an air conditioner control method, including the following steps:
step S1: the set temperature at the first time is obtained.
The first time is the starting time of the delay time set by the user. The delay time can be set according to actual requirements.
The set temperature is the working temperature of the air-supply enthalpy-increasing loop, and the set temperature is used for reflecting the adjustment requirement of the air supply amount of the air-supply enthalpy-increasing loop. In one example, the set temperature may be an outdoor ambient temperature, a compressor discharge temperature, or a condenser subcooling.
Step S2: acquiring a first opening value corresponding to the set temperature at the first moment from a preset opening value table; the preset opening value table stores the temperature intervals of the set temperature and the opening values of the expansion valves of the corresponding temperature intervals.
In one example, as shown in fig. 3, the preset opening value table is the temperature intervals sts1, sts2, sts3 … … stsn, wherein sts1 > sts2 > sts3 > … … > stsn, each temperature interval corresponds to an opening value, pls1 > pls2 > pls3 > … … > plsn, and n is a natural number greater than 0 set according to the requirement.
Each temperature interval comprises an intermediate temperature, an upper limit temperature and a lower limit temperature, wherein the upper limit temperature is larger than the intermediate temperature and larger than the lower limit temperature, the temperature interval in which the set temperature at the first moment is located is determined by comparing the set temperature at the first moment with the lower limit temperature and the intermediate temperature of each interval, and then the opening degree value of the expansion valve corresponding to the temperature interval is obtained.
For example, T2 and T1 are the middle temperature and the lower limit temperature of the temperature interval sts3, T1 and T0 are the middle temperature and the lower limit temperature of the temperature interval sts3, respectively, and T2 > T1 > T0.
And comparing the set temperature T1 at the first time with T2, T1 and T0, wherein if T0 < T1 < T1, the temperature interval at T1 is determined as sts3, and if T1 < T1 < T2, the temperature interval at T1 is determined as sts 2.
Step S3: and acquiring the target opening degree value of the expansion valve in the last time as a second opening degree value.
The expansion valve may be an electronic expansion valve, and the target opening value of the last expansion valve is a target opening value of the last adjustment of the electronic expansion valve, and the target opening value may be directly read from the electronic expansion valve.
Step S4: and if the first opening value is smaller than the second opening value, acquiring a second temperature interval corresponding to the second opening value from a preset opening value table.
The second temperature interval may be obtained from the preset opening value table according to the opening value.
Step S5: and acquiring the set temperature at the second moment.
The second moment is the last moment of the delay time set by the user.
Step S6: and acquiring a third opening value corresponding to the set temperature at the second moment from a preset opening value table.
The set temperature at the second moment can be compared with the set temperature at the first moment to determine the change trend of the temperature, the set temperature at the second moment is compared with the middle temperature, the upper limit temperature and the lower limit temperature of each temperature interval according to the change trend of the temperature by combining the temperature interval in which the set temperature at the first moment is positioned, the temperature interval in which the set temperature at the second moment is positioned is determined, and a third opening value corresponding to the temperature interval is obtained.
For example, when the set temperature T2 at the second time is in an increasing trend and T3 > T2 > T2, it is determined that the temperature section at the set temperature T2 at the second time is sts2 and the third opening value is pls2 corresponding to sts2, where sts3 is the temperature section at the set temperature at the first time, T2 is the upper limit temperature of the temperature section sts3, and T0 is the lower limit temperature of the temperature section T0.
When the set temperature T2 at the second time is in the rising trend, and T2 < T2, it is determined that the temperature interval at which the set temperature T2 at the second time is sts3, and the third opening value is pls3 corresponding to sts 3.
When the set temperature T2 at the second time is in a descending trend and T2 > T0, the temperature interval in which the set temperature at the second time is located is sts3, the third opening value is pls3 corresponding to sts3, and the like.
Step S7: if the third opening value is smaller than the second opening value and a time set temperature interval larger than the second temperature interval exists between the first time and the second time, acquiring the fourth opening value from a preset opening value table as a target opening value;
specifically, if a time set temperature is higher than the upper limit temperature of the second temperature interval between the first time and the second time, it is determined that the time set temperature is higher than the second temperature interval, and a fourth opening value is obtained from a preset opening value table and used as a target opening value.
The fourth value is smaller than the second opening value, and the fourth value is the opening value corresponding to the temperature interval adjacent to the second temperature interval. For example, if the second opening value is pls2 and the second temperature interval is sts2, the fourth opening value is pls3 corresponding to the temperature interval sts3 adjacent to the second temperature interval sts 2.
Step S8: and adjusting the opening degree of the expansion valve to the target opening degree value.
And the expansion valve adjusts the opening degree to the target opening degree value according to the received target opening degree value.
In the embodiment of the application, a first time set temperature is obtained, a first opening value corresponding to the first time set temperature is obtained according to a preset opening value table, and whether the opening degree of the current expansion valve needs to be reduced or not is determined by comparing the first opening value with a last target opening value of the expansion valve; and after the second moment, a fourth value corresponding to a temperature interval adjacent to the second temperature interval is taken as a target opening value, the opening degree of the expansion valve is gradually reduced after a period of time is delayed, the opening degree adjustment frequency of the expansion valve is reduced, and the stability and the service life of the air conditioning system are improved.
In an exemplary embodiment, after obtaining a third opening value corresponding to the set temperature at the second time from a preset opening value table, the method further includes:
and if the set temperature is always smaller than the second temperature interval between the first time and the second time, adjusting the opening degree of the expansion valve to the third opening degree value.
Specifically, when the set temperature is less than the lower limit temperature of the second temperature interval, it is determined that the set temperature is less than the second temperature interval.
For the requirement that the opening degree of the expansion valve is always reduced between the first time and the second time, and for reducing the frequency of adjustment of the opening degree of the expansion valve, in the embodiment of the application, for the condition that the set temperature is always smaller than the second temperature range between the first time and the second time, the opening degree of the expansion valve is directly adjusted to be the third opening degree value, so that the rapid adjustment of the opening degree of the expansion valve is realized, and the power consumption of the air conditioning system is reduced.
In an exemplary embodiment, if there is a need to increase the opening degree of the expansion valve, in order to avoid that the discharge temperature of the compressor is too high due to untimely adjustment, the air conditioning system enters an overload or abnormal shutdown state, after obtaining the last target opening degree value of the expansion valve as the second opening degree value, the method further includes:
and if the first opening value is larger than the second opening value, adjusting the opening degree of the expansion valve to be the first opening value.
The opening degree of the expansion valve is directly adjusted to the first opening degree value, so that the air supplement amount of the air conditioner is quickly adjusted, and the stable operation of the air conditioning system is ensured.
In an exemplary embodiment, the set temperature is one of an outdoor ambient temperature, a compressor discharge temperature, and a degree of supercooling of a condenser;
because tonifying qi increases the enthalpy return circuit and is often used for guaranteeing the normal use of air conditioner under the extreme environment, in this application embodiment, preferentially regard outdoor ambient temperature as the settlement temperature, secondly, tonifying qi increases the enthalpy return circuit and also is applied to the regulation of compressor exhaust temperature, consequently, in this application embodiment, the priority level of settlement temperature is: outdoor environment temperature > compressor discharge temperature > condenser supercooling degree.
Specifically, before the set temperature at the first time is acquired, the method further includes:
acquiring the outdoor environment temperature;
acquiring a fifth opening value corresponding to the outdoor environment temperature from a preset opening value table;
if the fifth opening value is not equal to the second opening value, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table,
if the sixth opening value is not equal to the second opening value, taking the exhaust temperature of the compressor as a set temperature;
and if the fifth opening value and the sixth opening value are equal to the second opening value, acquiring the supercooling degree of the condenser, and taking the supercooling degree of the condenser as the set temperature.
And the supercooling degree of the condenser is the difference between the saturation temperature corresponding to the high pressure of the discharged air of the compressor and the temperature at the outlet of the condenser.
In one example, the step of obtaining the supercooling degree of the condenser includes:
acquiring a saturation temperature corresponding to the high pressure of the discharged air of the compressor and the temperature of the outlet of the condenser;
and subtracting the temperature of the outlet of the condenser from the saturation temperature corresponding to the high pressure of the discharged gas of the compressor to obtain the supercooling degree of the condenser.
In an exemplary embodiment, before the step of using the outdoor environment temperature as the set temperature, the method further includes:
acquiring the exhaust temperature of a compressor, and acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table;
and if the fifth opening value and the sixth opening value are both larger than the second opening value, taking the exhaust temperature of the compressor as the set temperature.
When outdoor ambient temperature and compressor exhaust temperature have the increase demand simultaneously, lead to the compressor cylinder body to damage for preventing to take place the liquid impact, to above-mentioned condition, the aperture adjustment of expansion valve is carried out as the settlement temperature to the preferential compressor exhaust temperature that uses of this application embodiment, ensures air conditioning system's safe operation.
As shown in fig. 4, an embodiment of the present application further provides an air conditioner control device, applied to an air conditioner with an air make-up enthalpy increasing circuit, including:
the first temperature value obtaining module 1 is used for obtaining a set temperature at a first moment; the set temperature is the working temperature of the air-replenishing enthalpy-increasing loop;
a first opening value obtaining module 2, configured to obtain a first opening value corresponding to the set temperature at the first time from a preset opening value table; the preset opening value table stores each temperature interval of the set temperature and the opening value of the expansion valve of each corresponding temperature interval;
a second opening value obtaining module 3, configured to obtain a last target opening value of the expansion valve as a second opening value;
a second temperature interval obtaining module 4, configured to obtain, if the first opening value is smaller than the second opening value, a second temperature interval corresponding to the second opening value from a preset opening value table;
the second temperature value obtaining module 5 is used for obtaining the set temperature at the second moment;
a third openness value obtaining module 6, configured to obtain a third openness value corresponding to the set temperature at the second time from a preset openness value table;
a target opening value obtaining module 7, configured to obtain a fourth opening value from a preset opening value table as a target opening value if the third opening value is smaller than the second opening value and a time-set temperature between the first time and the second time is greater than the second temperature range; the fourth opening value is smaller than the second opening value, and the fourth opening value is the opening value corresponding to the temperature interval adjacent to the second temperature interval;
and the opening degree adjusting module 8 is used for adjusting the opening degree of the expansion valve to the target opening degree value.
It should be noted that, when the air conditioner control device provided in the foregoing embodiment executes the air conditioner control method, only the division of the above functional modules is taken as an example, and in practical applications, the functions may be distributed to different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the air conditioner control device and the air conditioner control method provided by the above embodiments belong to the same concept, and the detailed implementation process thereof is shown in the method embodiments and is not described herein again.
As shown in fig. 5, an embodiment of the present application further provides an air conditioner, including a compressor 100, an evaporator 200, a first expansion valve 300, a flash evaporator 400, a second expansion valve 500, a condenser 600, and a controller 700;
the compressor comprises a first interface 101, a second interface 102 and a gas supplementing port 103;
the first port 101 is connected to an output port of the evaporator 200, and the second port 102 is connected to an input port of the condenser 600.
The flash evaporator 400 comprises a first interface 401, a second interface 402 and a third interface 403, wherein the first interface 401 of the flash evaporator 400 is connected with the air supplementing port 103 of the compressor.
The first expansion valve 300 is arranged between the second interface 402 of the flash evaporator and the evaporator 200;
the second expansion valve 500 is disposed between the third interface 403 of the flash evaporator and the condenser 600;
the controller 700 includes a memory 701 and a processor 702;
the memory 701 is used for storing one or more programs;
when the one or more programs are executed by the processor 702, the processor 702 is caused to implement the air conditioner control method as described in any one of the above.
Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the air conditioner control method according to any one of the above-mentioned embodiments.
Embodiments of the present application may take the form of a computer program product embodied on one or more storage media including, but not limited to, disk storage, CD-ROM, optical storage, and the like, in which program code is embodied. Computer readable storage media, which include both non-transitory and non-transitory, removable and non-removable media, may implement any method or technology for storage of information. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of the storage medium of the computer include, but are not limited to: phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, may be used to store information that may be accessed by a computing device.
The embodiment of the application also provides computer equipment, which comprises a memory, a processor and a computer program stored in the memory and executable by the processor, wherein the processor executes the computer program to realize the steps of the air conditioner control method.
According to the air conditioner control method and device, the first time set temperature is obtained, the first opening value corresponding to the first time set temperature is obtained according to the preset opening value table, and whether the opening degree of the current expansion valve is required to be reduced or not is determined by comparing the first opening value with the last target opening value of the expansion valve; whether the current opening value needs to be gradually reduced is determined by judging whether the set temperature is larger than the second temperature interval between the first moment and the second moment, and after the second moment, the opening degree of the expansion valve is gradually reduced by taking a fourth value corresponding to the temperature interval adjacent to the second temperature interval as a target opening value after a period of time delay, so that the opening degree adjusting frequency of the expansion valve is reduced, and the problems that an air conditioning system is unstable and the operation reliability is reduced due to frequent adjustment of the opening degree are avoided. Meanwhile, in order to avoid the problem that the opening degree of the expansion valve is required to be increased due to untimely adjustment, the embodiment of the application directly adjusts the opening degree of the expansion valve to be the first opening degree value under the condition that the first opening degree value is larger than the second opening degree value so as to avoid overhigh exhaust temperature of the compressor and ensure the stable operation of the air conditioner when the air conditioning system enters an overload or abnormal shutdown state.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. The control method of the air conditioner is characterized by being applied to the air conditioner with an air-supplying enthalpy-increasing loop and comprising the following steps of:
acquiring a set temperature at a first moment; the set temperature is the working temperature of the air-replenishing enthalpy-increasing loop;
acquiring a first opening value corresponding to the set temperature at the first moment from a preset opening value table; the preset opening value table stores each temperature interval of the set temperature and the opening value of the expansion valve of each corresponding temperature interval;
acquiring a target opening value of the expansion valve in the last time as a second opening value;
if the first opening value is smaller than the second opening value, acquiring a second temperature interval corresponding to the second opening value from a preset opening value table;
acquiring a set temperature at a second moment;
acquiring a third opening value corresponding to the set temperature at the second moment from a preset opening value table;
if the third opening value is smaller than the second opening value and a time set temperature interval larger than the second temperature interval exists between the first time and the second time, acquiring the fourth opening value from a preset opening value table as a target opening value; the fourth opening value is smaller than the second opening value, and the fourth opening value is the opening value corresponding to the temperature interval adjacent to the second temperature interval;
adjusting the opening degree of the expansion valve to the target opening degree value; the expansion valve is used for adjusting the air supplement amount output to the compressor by the air supplement enthalpy increasing loop.
2. The air conditioner control method according to claim 1, further comprising, after acquiring a third opening value corresponding to the set temperature at the second time from a preset opening value table:
and if the set temperature is always smaller than the second temperature interval between the first time and the second time, adjusting the opening degree of the expansion valve to the third opening degree value.
3. The air conditioner control method according to claim 1, wherein the step of obtaining the target opening degree value of the expansion valve in the previous time as the second opening degree value further comprises:
and if the first opening value is larger than the second opening value, adjusting the opening degree of the expansion valve to be the first opening value.
4. The air conditioner control method according to claim 1, wherein the set temperature is one of an outdoor ambient temperature, a compressor discharge temperature, and a degree of supercooling of a condenser;
before the set temperature at the first moment is acquired, the method further comprises the following steps:
acquiring the outdoor environment temperature;
acquiring a fifth opening value corresponding to the outdoor environment temperature from a preset opening value table;
if the fifth opening value is not equal to the second opening value, taking the outdoor environment temperature as a set temperature;
otherwise, acquiring the exhaust temperature of the compressor, and acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table;
if the sixth opening value is not equal to the second opening value, taking the exhaust temperature of the compressor as a set temperature;
and if the fifth opening value and the sixth opening value are equal to the second opening value, acquiring the supercooling degree of the condenser, and taking the supercooling degree of the condenser as the set temperature.
5. The air conditioner controlling method according to claim 4, further comprising, before the step of taking the outdoor ambient temperature as a set temperature:
acquiring the exhaust temperature of a compressor, and acquiring a sixth opening value corresponding to the exhaust temperature of the compressor from a preset opening value table;
and if the fifth opening value and the sixth opening value are both larger than the second opening value, taking the exhaust temperature of the compressor as the set temperature.
6. The air conditioner controlling method of claim 4, wherein the step of obtaining the supercooling degree of the condenser comprises:
acquiring a saturation temperature corresponding to the high pressure of the discharged air of the compressor and the temperature of the outlet of the condenser;
and subtracting the temperature of the outlet of the condenser from the saturation temperature corresponding to the high pressure of the discharged gas of the compressor to obtain the supercooling degree of the condenser.
7. The utility model provides an air conditioner controlling means, is applied to the air conditioner that is equipped with tonifying qi and increases enthalpy return circuit, includes:
the first temperature value acquisition module is used for acquiring the set temperature at the first moment; the set temperature is the working temperature of the air-replenishing enthalpy-increasing loop;
the first opening value acquisition module is used for acquiring a first opening value corresponding to the set temperature at the first moment from a preset opening value table; the preset opening value table stores each temperature interval of the set temperature and the opening value of the expansion valve of each corresponding temperature interval;
the second opening value acquisition module is used for acquiring the target opening value of the expansion valve at the last time as a second opening value;
a second temperature interval obtaining module, configured to obtain, if the first opening value is smaller than the second opening value, a second temperature interval corresponding to the second opening value from a preset opening value table;
the second temperature value acquisition module is used for acquiring the set temperature at the second moment;
the third openness value acquisition module is used for acquiring a third openness value corresponding to the set temperature at the second moment from a preset openness value table;
a target opening value obtaining module, configured to obtain a fourth opening value from a preset opening value table as a target opening value if the third opening value is smaller than the second opening value and a time-set temperature interval between the first time and the second time is greater than the second temperature interval; the fourth opening value is smaller than the second opening value, and the fourth opening value is the opening value corresponding to the temperature interval adjacent to the second temperature interval;
the opening degree adjusting module is used for adjusting the opening degree of the expansion valve to the target opening degree value; the expansion valve is used for adjusting the air supplement amount output to the compressor by the air supplement enthalpy increasing loop.
8. An air conditioner is characterized by comprising a compressor, an evaporator, a condenser, an expansion valve, a flash evaporator and a controller;
the flash evaporator comprises a first interface, a second interface and a third interface, the first interface of the flash evaporator is connected with the air supplementing port of the compressor, and the second interface of the flash evaporator is connected with the input port of the evaporator;
the expansion valve is arranged between the condenser and a third interface of the flash evaporator;
the controller comprises a memory and a processor;
the memory for storing one or more programs;
when the one or more programs are executed by the processor, cause the processor to implement the air conditioner control method according to any one of claims 1 to 6.
9. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program, when executed by a processor, implements the steps of the air conditioner control method according to any one of claims 1-6.
10. A computer device, characterized by: comprising a memory, a processor and a computer program stored in said memory and executable by said processor, said processor implementing the steps of the air conditioner control method according to any one of claims 1-6 when executing said computer program.
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