CN111121242B - Adjusting method and device for operating parameters of air conditioning system and air conditioning system - Google Patents
Adjusting method and device for operating parameters of air conditioning system and air conditioning system Download PDFInfo
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- CN111121242B CN111121242B CN201911371032.1A CN201911371032A CN111121242B CN 111121242 B CN111121242 B CN 111121242B CN 201911371032 A CN201911371032 A CN 201911371032A CN 111121242 B CN111121242 B CN 111121242B
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- 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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Abstract
The invention provides an adjusting method and an adjusting device for operating parameters of an air conditioning system and the air conditioning system, wherein the adjusting method comprises the following steps: when the air conditioning system is just started, the air conditioning system adjusts a target value of the pressure of a compressor and a target value of the superheat degree of a coil of a heat exchanger of an indoor unit according to the outdoor environment temperature; in the running process of the air-conditioning system, according to the temperature difference between the indoor environment temperature of the indoor unit and the temperature set by a user and the outdoor environment temperature, adjusting the target value of the pressure of the compressor and the target value of the superheat degree of a coil pipe of a heat exchanger of the indoor unit; and dynamically adjusting the output capacity of the air conditioning system according to the ambient temperature, the room temperature difference and the operation time.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner system operation parameter adjusting method, an air conditioner system operation parameter adjusting device and an air conditioner system.
Background
After the air conditioning system is started, the air conditioning system can operate according to set target parameters, but the target parameters of the air conditioning system operation are often fixed and unchangeable under different environmental temperatures and different load conditions, taking a refrigeration mode as an example, the air conditioning system has a good operation state under a normal-temperature working condition or a low-temperature working condition and a high refrigeration capacity, but the optimal refrigeration capacity of the air conditioning system cannot be exerted under a high-temperature working condition, the air conditioning system is easily triggered to be protected to stop, or the set target temperature in a room cannot be reached, so that the use experience of a user is influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides an adjusting method and an adjusting device for operating parameters of an air conditioning system and the air conditioning system.
The invention provides a method for adjusting operating parameters of an air conditioning system, which comprises the following steps: the operating parameters of the air conditioning system comprise the pressure of a compressor and the superheat degree of a coil pipe of a heat exchanger of the indoor unit; when the air conditioning system is just started, the air conditioning system adjusts a target value of the pressure of a compressor and a target value of the superheat degree of a coil of a heat exchanger of an indoor unit according to the outdoor environment temperature; in the operation process of the air conditioning system, the target value of the pressure of the compressor and the target value of the superheat degree of a coil pipe of a heat exchanger of the indoor unit are adjusted according to the temperature difference between the indoor environment temperature of the indoor unit and the temperature set by a user and the outdoor environment temperature.
The refrigerating and heating capacity of the air conditioning system under a severe working condition is improved, the protective shutdown is prevented, and the operating temperature range of the air conditioning system is enlarged; when the temperature in the room does not reach the set value, the operation parameters are automatically adjusted, the capacity output of the air conditioning system is improved, and the temperature control in the room is more accurate and reasonable. And dynamically adjusting the output capacity of the air conditioning system according to the ambient temperature, the room temperature difference and the operation time.
Furthermore, the superheat degree of the coil pipe of the heat exchanger of the indoor unit is equal to the difference between the outlet pipe temperature of the coil pipe and the inlet pipe temperature of the coil pipe.
Further, when the air conditioning system is operating in a cooling mode, the compressor pressure is a compressor suction side pressure.
Further, when the air conditioning system is just started, T is startedOuter coverSetting the target value of the compressor suction side pressure to be a first target pressure P when the temperature is less than or equal to a first set temperature A1(ii) a The target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit is equal to the first target superheat degree M1(ii) a When the first set temperature A is less than TOuter coverSetting the target value P of the compressor suction side pressure to be the second target pressure P when the temperature is less than or equal to the second set temperature B2(ii) a Target value of superheat degree of coil of indoor unit heat exchangerAt the second target superheat degree M2(ii) a When the second set temperature B is less than TOuter coverWhen the target value P of the compressor suction side pressure is set to the third target pressure P3(ii) a The target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit is equal to a third target superheat degree M3。
At low outdoor ambient temperatures, e.g. TOuter coverThe pressure of a refrigerant of the air-conditioning system is relatively low when the temperature is less than 25 ℃, and the target value of the air suction side pressure of the compressor with a low target can reduce the evaporation pressure of the refrigerant, increase the refrigerating capacity of the air-conditioning system and achieve the aim of quickly reducing the temperature; at high outdoor ambient temperatures, e.g. TOuter coverWhen the temperature is higher than 35 ℃, the exhaust temperature and the exhaust pressure of the air conditioning system can be increased, and the target value of the higher compressor suction side pressure can be set to prevent the compressor from triggering the system protection shutdown or causing the compressor fault due to the overhigh operation frequency, so that the operation temperature interval of the air conditioning system is increased; therefore, the pressure on the suction side of the compressor is used as a target parameter in the cooling mode of the air conditioning system, and the air conditioning system automatically adjusts the operating frequency of the compressor by setting different target values of the pressure, so as to adjust the cooling capacity of the air conditioning system.
When the outdoor ambient temperature is low, e.g. TOuter coverThe temperature is lower than 25 ℃, the heat exchange efficiency of the outdoor heat exchanger is higher, so that the refrigerating effect of the indoor unit is better, liquid return is easy to occur under the condition that the refrigerant of the indoor unit is not evaporated sufficiently, the running reliability of the compressor is influenced, and the risk of liquid return of the compressor can be avoided while the refrigerating effect is ensured by setting a relatively high degree of superheat; at higher ambient temperatures, e.g. TOuter coverAnd the temperature is higher than 35 ℃, the throttling device of the indoor unit is adjusted, the target value of superheat degree is properly reduced, the latent heat of vaporization of the refrigerant can be increased, the refrigerating capacity is improved, the refrigerant flowing out of the indoor unit can be fully evaporated to reach a supersaturated state under the action of outdoor high temperature and pipeline on-way resistance, and meanwhile, the throttling device increases the opening degree, so that the exhaust pressure can be prevented from being too high, and the stable operation of the air conditioning system is ensured.
Further, the first set temperature a is 25 ℃ and the second set temperature B is 35 ℃.
Further, P1＜P2＜P3，M1＞M2＞M3。
Further, after the air conditioning system operates for a time period T, the indoor ambient temperature T of the indoor unit is obtainedInner partAnd a target temperature T of the userIs provided withAnd calculating the temperature difference between the two, T ═ TInner part-TIs provided with。
Further, when the delta T is less than or equal to a first preset threshold value X, the outdoor environment temperature T is obtainedOuter coverThe target value of the compressor suction side pressure and the target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit are correspondingly increased periodically until the highest target pressure is reached; periodically improving the superheat degree of a coil pipe of a heat exchanger of the indoor unit until the superheat degree reaches the highest target superheat degree; when the first preset threshold value X is more than delta T and less than or equal to the second preset threshold value Y, keeping the target value of the pressure of the air suction side of the compressor and the target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit unchanged; when the second preset threshold value Y is less than delta T, the outdoor environment temperature T is obtainedOuter coverAnd periodically reducing the target value of the compressor suction side pressure until the lowest target pressure.
When the temperature difference delta T is smaller, the difference between the temperature in the room and the target temperature is smaller, the load of the indoor unit is smaller, the influence of adjusting the superheat degree of the coil pipe of the heat exchanger of the indoor unit and adjusting the target pressure of the compressor on the output capacity of the air conditioning system is obvious, and the adjusting effect of the superheat degree and the target pressure is better.
When the temperature difference delta T is larger, the difference between the temperature in a room and the target temperature is larger, the load of the indoor unit is larger, the influence of adjusting the superheat degree of a coil pipe of a heat exchanger of the indoor unit on the output capacity of the air conditioning system is smaller, the frequency of the compressor can be adjusted by adjusting the target pressure of the compressor, the influence on the output capacity of the air conditioning system is larger, and the target pressure adjusting effect of independently adjusting the compressor is more direct and efficient.
Furthermore, the value range of the first preset threshold value X is 1-2 ℃, the value range of the second preset threshold value Y is 3-5 ℃, and X is less than Y.
The invention also provides a device for adjusting the operating parameters of the air conditioning system, which comprises: the detection unit is used for detecting the outdoor environment temperature, the indoor environment temperature, the pressure of the compressor, the inlet pipe temperature and the outlet pipe temperature of the coil pipe of the heat exchanger of the indoor unit; the calculation unit is used for calculating the superheat degree of the coil pipe of the heat exchanger of the indoor unit according to the pipe inlet temperature and the pipe outlet temperature of the coil pipe of the heat exchanger of the indoor unit; the computing unit is further used for computing the difference value between the indoor environment temperature and the user target temperature; and the control unit is used for adjusting a target value of the pressure of the compressor and a target value of the superheat degree of a coil of a heat exchanger of the indoor unit according to the outdoor environment temperature and the difference value.
The invention also provides an air conditioning system, which comprises a readable storage medium and a processor, wherein the readable storage medium is used for storing a computer program, and the computer program is read by the processor and runs to realize the method for adjusting the running parameters of the air conditioning system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a flow chart of a method of adjusting an operating parameter of an air conditioning system;
fig. 2 is a flow chart of the method for adjusting the operating parameters of the air conditioning system in the cooling mode.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A method for adjusting operating parameters of an air conditioning system comprises the following steps:
the operating parameters of the air conditioning system comprise the pressure of a compressor and the superheat degree of a coil pipe of a heat exchanger of the indoor unit;
when the air-conditioning system is just started, the air-conditioning system is based on the outdoor ambient temperature TOuter coverAdjusting the target value of the pressure of the compressor and the target value of the superheat degree of a coil pipe of a heat exchanger of the indoor unit;
during the operation of the air conditioning system, according to the indoor environment temperature T of the indoor unitInner partAnd a user-set temperature TIs provided withAnd the outdoor ambient temperature TOuter coverAnd regulating the target value of the pressure of the compressor and the target value of the superheat degree of the coil of the heat exchanger of the indoor unit.
The superheat degree M of the coil pipe of the indoor unit heat exchanger is equal to the outlet pipe temperature T of the coil pipeGo outTemperature T of coil pipeIntoThe difference of (a).
When the air conditioning system is operating in a cooling mode, the compressor pressure is the compressor suction side pressure.
The adjusting method improves the refrigerating and heating capacity of the air conditioning system under the severe working condition, prevents protective shutdown and increases the operating temperature range of the air conditioning system; when the temperature in the room does not reach the set value, the operation parameters are automatically adjusted, the capacity output of the air conditioning system is improved, and the temperature control in the room is more accurate and reasonable. And dynamically adjusting the output capacity of the air conditioning system according to the ambient temperature, the room temperature difference and the running time.
The method for adjusting the operating parameters of the air conditioning system comprises the following specific steps:
step S100, after the air conditioning system is started, detecting the outdoor environment temperature T of the outdoor unitOuter coverPressure value of air suction side of compressor and inlet pipe temperature T of coil pipe of heat exchanger of indoor unitIntoAnd the sum tube temperature TGo out。
Step S200, when T is reachedOuter coverWhen the temperature is less than or equal to the first set temperature A, the target value P of the compressor suction side pressure is set as the first target pressure P1(ii) a The target value of the superheat degree M of the coil pipe of the heat exchanger of the indoor unit is equal to the first target superheat degree M1；
When the first set temperature A is less than TOuter coverNo more than thatSetting the target value P of the compressor suction side pressure at the second set temperature B as a second target pressure P2(ii) a The target value of the superheat degree M of the coil pipe of the heat exchanger of the indoor unit is equal to the second target superheat degree M2；
When the second set temperature B is less than TOuter coverWhen the target value of the compressor suction side pressure is set to the third target pressure P3(ii) a The target value of the superheat degree M of the coil pipe of the heat exchanger of the indoor unit is equal to the third target superheat degree M3。
The first set temperature A is preferably 25 ℃, and the second set temperature B is preferably 35 ℃;
first target pressure P1Is in the range of 5.0-6.0bar, and a second target pressure P2Is in the range of 6.0-7.0bar, and a third target pressure P3The value range of (A) is 7.0-8.0 bar.
In the same air-conditioning system P1＜P2＜P3。
First target degree of superheat M1The value range of (A) is 2-3 ℃, and the second target superheat degree M2The value range of (1-2 ℃) and a third target superheat degree M3The value range of (A) is 0-1 ℃.
In the same air-conditioning system M1＞M2＞M3。
At low outdoor ambient temperatures, e.g. TOuter coverThe pressure of a refrigerant of the air-conditioning system is relatively low when the temperature is less than 25 ℃, and the target value of the air suction side pressure of the compressor with a low target can reduce the evaporation pressure of the refrigerant, increase the refrigerating capacity of the air-conditioning system and achieve the aim of quickly reducing the temperature; at high outdoor ambient temperatures, e.g. TOuter coverWhen the temperature is higher than 35 ℃, the exhaust temperature and the exhaust pressure of the air conditioning system can be increased, and the target value of the higher compressor suction side pressure can be set to prevent the compressor from triggering the system protection shutdown or causing the compressor fault due to the overhigh operation frequency, so that the operation temperature interval of the air conditioning system is increased;
therefore, the pressure on the suction side of the compressor is used as a target parameter in the cooling mode of the air conditioning system, and the air conditioning system automatically adjusts the operating frequency of the compressor by setting different target values of the pressure, so as to adjust the cooling capacity of the air conditioning system.
When the outdoor ambient temperature is low, e.g. TOuter coverThe temperature is lower than 25 ℃, the heat exchange efficiency of the outdoor heat exchanger is higher, so that the refrigerating effect of the indoor unit is better, liquid return is easy to occur under the condition that the refrigerant of the indoor unit is not evaporated sufficiently, the running reliability of the compressor is influenced, and the risk of liquid return of the compressor can be avoided while the refrigerating effect is ensured by setting a relatively high degree of superheat; at higher ambient temperatures, e.g. TOuter coverAnd the temperature is higher than 35 ℃, the throttling device of the indoor unit is adjusted, the target value of superheat degree is properly reduced, the latent heat of vaporization of the refrigerant can be increased, the refrigerating capacity is improved, the refrigerant flowing out of the indoor unit can be fully evaporated to reach a supersaturated state under the action of outdoor high temperature and pipeline on-way resistance, and meanwhile, the throttling device increases the opening degree, so that the exhaust pressure can be prevented from being too high, and the stable operation of the air conditioning system is ensured.
The superheat degree of the coil pipe of the heat exchanger of the indoor unit can be adjusted through a throttling device of the indoor unit, and when the opening degree of the throttling device is reduced, the outlet pipe temperature T of the coil pipe of the heat exchanger of the indoor unitGo outWill rise, thus increase the superheat degree M of the indoor unit heat exchanger coil; when the opening degree of the throttling device is increased, the outlet pipe temperature T of the coil pipe of the heat exchanger of the indoor unitGo outWill be reduced, thus reducing the superheat degree M of the coil of the heat exchanger of the indoor unit.
Step S300, after the air conditioning system operates for a time period T, obtaining the indoor environment temperature T of the indoor unitInner partAnd a target temperature T of the userIs provided withAnd calculating the temperature difference between the two, T ═ TInner part-TIs provided withAnd adjusting the target value P of the compressor suction side pressure according to the value range of the temperature difference delta T.
Step S310, when delta T is less than or equal to a first preset threshold value X, obtaining the outdoor environment temperature TOuter coverAnd periodically increasing the target value P of the compressor suction side pressure until reaching the target value P of the compressor suction side pressure and the target value of the superheat M of the coil of the heat exchanger of the indoor unit corresponding to the target value P of the compressor suction side pressure and the target value of the superheat M of the coil of the heat exchanger of the indoor unitA maximum target pressure; periodically improving the superheat degree M of a coil pipe of a heat exchanger of the indoor unit until the superheat degree M reaches the highest target superheat degree;
the value range of the time period t is 30-60min, and the value range of the first preset threshold value X is 1-2 ℃.
If the target value of the current compressor suction side pressure is P1The target value of the pressure is increased to P2If the target value of the current pressure is P2The target value of the pressure is increased to P3If the target value of the current pressure is P3And P is3If the pressure is the highest target pressure, keeping the target value of the current pressure unchanged; at the same time, the superheat degree M of the coil pipe of the heat exchanger of the indoor unit is correspondingly adjusted, if the target value of the current superheat degree is M3If the target value of the degree of superheat is increased to M2If the target value of the current degree of superheat is M2If the target value of the degree of superheat is increased to M1If the target value of the current degree of superheat is M1And M is3The target value of the superheat degree is kept unchanged if the target value is the highest target superheat degree;
after the operation is carried out for two time periods T, and the temperature difference delta T is less than or equal to a first preset threshold value X, further adjusting a target value P of the compressor suction side pressure and a target value of the superheat degree M of the coil pipe of the heat exchanger of the indoor unit until the target value P of the pressure is the highest target pressure, and the target value of the superheat degree M is the highest target superheat degree;
step S320, when the first preset threshold value X is less than delta T and less than or equal to the second preset threshold value Y, keeping a target value P of the current compressor suction side pressure and a target value of the superheat degree M of the coil pipe of the heat exchanger of the indoor unit unchanged;
the value range of the second preset threshold value Y is 3-5 ℃, and the first preset threshold value X is smaller than the second preset threshold value Y.
Step S330, when the second preset threshold value Y is less than delta T, the outdoor environment temperature T is obtainedOuter coverAnd the target value P of the compressor suction side pressure is periodically reduced until the lowest target pressure.
If the target value of the current compressor suction side pressure is P3Purpose of pressureReduction of scalar value to P2If the target value of the current pressure is P2The target value of the pressure is reduced to P1If the target value of the current pressure is P1And P is1If the pressure is the lowest target pressure, keeping the target value of the current pressure unchanged; and after the operation is carried out for two time periods T, and when the second preset threshold value Y is less than delta T, further adjusting the target value P of the compressor suction side pressure until the target value P of the pressure is the lowest target pressure.
When the temperature difference delta T is smaller, the difference between the temperature in the room and the target temperature is smaller, the load of the indoor unit is smaller, the influence of adjusting the superheat degree of the coil pipe of the heat exchanger of the indoor unit and adjusting the target pressure of the compressor on the output capacity of the air conditioning system is obvious, and the adjusting effect of the superheat degree and the target pressure is better.
When the temperature difference delta T is larger, the difference between the temperature in a room and the target temperature is larger, the load of the indoor unit is larger, the influence of adjusting the superheat degree of a coil pipe of a heat exchanger of the indoor unit on the output capacity of the air conditioning system is smaller, the frequency of the compressor can be adjusted by adjusting the target pressure of the compressor, the influence on the output capacity of the air conditioning system is larger, and the target pressure adjusting effect of independently adjusting the compressor is more direct and efficient.
In the present embodiment, the outdoor environment temperature is divided into three sections, each corresponding to a target value of the compressor suction side pressure and a target value of the superheat degree of the indoor unit heat exchanger coil, the outdoor environment temperature may be further divided into three or more sections, and similarly, each section corresponds to a target value of the compressor suction side pressure and a target value of the superheat degree of the indoor unit heat exchanger coil.
Example 2
An apparatus for adjusting an operating parameter of an air conditioning system, comprising:
and the detection unit is used for detecting the outdoor environment temperature, the indoor environment temperature, the pressure of the compressor, and the inlet pipe temperature and the outlet pipe temperature of the coil pipe of the heat exchanger of the indoor unit.
The calculation unit is used for calculating the superheat degree of the coil pipe of the heat exchanger of the indoor unit according to the pipe inlet temperature and the pipe outlet temperature of the coil pipe of the heat exchanger of the indoor unit;
the computing unit is further used for computing the difference value between the indoor environment temperature and the user target temperature;
and the control unit is used for periodically adjusting a target value of the pressure of the compressor and a target value of the superheat degree of a coil of a heat exchanger of the indoor unit according to the outdoor environment temperature and the difference value.
Example 3
An air conditioning system comprising a readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the method of adjusting an operating parameter of an air conditioning system according to embodiment 1.
Example 4
A computer-readable storage medium, which stores a computer program that, when read and executed by a processor, implements a method for adjusting operating parameters of an air conditioning system as described in embodiment 1.
Of course, it can be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments may be implemented by instructing the control device through a computer program, where the program may be stored in a readable storage medium, and the program may include the processes of the above embodiments when executed, where the readable storage medium may be a memory, a magnetic disk, an optical disk, and the like.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the present specification, the embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The operation parameter adjusting device and the air conditioning system disclosed in embodiments 2 to 3 are relatively simple in description, and the relevant points can be referred to the description of the method section, since they correspond to the operation parameter adjusting method of the air conditioning system disclosed in embodiment 1.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A method for adjusting operating parameters of an air conditioning system is characterized by comprising the following steps:
the operating parameters of the air conditioning system comprise the pressure of a compressor and the superheat degree of a coil pipe of a heat exchanger of the indoor unit;
when the air conditioning system is just started, the air conditioning system adjusts a target value of the pressure of a compressor and a target value of the superheat degree of a coil of a heat exchanger of an indoor unit according to the outdoor environment temperature; when the air conditioning system is operating in a cooling mode, the compressor pressure is a compressor suction side pressure, wherein: when the temperature outside T is less than or equal to a first set temperature A, setting the target value of the compressor suction side pressure as a first target pressure P1, and setting the target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit to be equal to a first target superheat degree M1; when the first set temperature A is less than T and less than or equal to a second set temperature B, the target value P of the compressor suction side pressure is set as a second target pressure P2, and the target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit is equal to a second target superheat degree M2; when the second set temperature B is less than T, the target value P of the compressor suction side pressure is set to be a third target pressure P3, so that the target value of the superheat degree of the coil of the heat exchanger of the indoor unit is equal to a third target superheat degree M3;
in the operation process of the air conditioning system, the target value of the pressure of the compressor and the target value of the superheat degree of a coil pipe of a heat exchanger of the indoor unit are adjusted according to the temperature difference between the indoor environment temperature of the indoor unit and the temperature set by a user and the outdoor environment temperature.
2. The method as claimed in claim 1, wherein the superheat degree of the coil of the indoor unit heat exchanger is equal to the difference between the temperature of the outlet pipe of the coil and the temperature of the inlet pipe of the coil.
3. The method of claim 1, wherein the first set point temperature A is 25 ℃ and the second set point temperature B is 35 ℃.
4. The method as claimed in claim 1, wherein P1 < P2 < P3, M1 > M2 > M3.
5. The method as claimed in claim 1, wherein after the air conditioning system is operated for a time period T, obtaining an indoor ambient temperature T of the indoor unit and a user target temperature T, and calculating a temperature difference Δ T = T in-T between the indoor ambient temperature T and the user target temperature T.
6. The method for adjusting the operating parameters of the air conditioning system as claimed in claim 5, wherein when Δ T is less than or equal to the first preset threshold X, the target value of the compressor suction side pressure outside the outdoor environment temperature T and corresponding to the target value of the superheat degree of the coil of the heat exchanger of the indoor unit is obtained, and the target value of the compressor suction side pressure is periodically increased until the highest target pressure is reached; the superheat degree of a coil pipe of a heat exchanger of an indoor unit is periodically improved until the superheat degree reaches the highest target superheat degree;
when the first preset threshold value X is larger than delta T and is smaller than or equal to the second preset threshold value Y, keeping the target value of the pressure of the air suction side of the current compressor and the target value of the superheat degree of the coil pipe of the heat exchanger of the indoor unit unchanged;
and when the second preset threshold value Y is less than delta T, acquiring a target value of the pressure of the air suction side of the compressor outside the outdoor environment temperature T and corresponding to the outdoor environment temperature T, and periodically reducing the target value of the pressure of the air suction side of the compressor until the lowest target pressure is reached.
7. The method for adjusting the operating parameters of the air conditioning system according to claim 6, wherein the first preset threshold value X ranges from 1 to 2 ℃, the second preset threshold value Y ranges from 3 to 5 ℃, and X is less than Y.
8. An adjusting device for operating parameters of an air conditioning system, characterized in that, when applied to the adjusting method of any one of claims 1 to 7, the adjusting device comprises:
the detection unit is used for detecting the outdoor environment temperature, the indoor environment temperature, the pressure of the compressor, the inlet pipe temperature and the outlet pipe temperature of the coil pipe of the heat exchanger of the indoor unit;
the calculation unit is used for calculating the superheat degree of the coil pipe of the heat exchanger of the indoor unit according to the pipe inlet temperature and the pipe outlet temperature of the coil pipe of the heat exchanger of the indoor unit;
the computing unit is also used for computing the difference value between the indoor environment temperature and the user target temperature;
and the control unit is used for adjusting a target value of the pressure of the compressor and a target value of the superheat degree of a coil of a heat exchanger of the indoor unit according to the outdoor environment temperature and the difference value.
9. An air conditioning system comprising a readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement a method of adjusting an operating parameter of an air conditioning system as claimed in any one of claims 1 to 7.
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