CN114963471B - Control method of air conditioning system, air conditioning system and readable storage medium - Google Patents

Control method of air conditioning system, air conditioning system and readable storage medium Download PDF

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Publication number
CN114963471B
CN114963471B CN202110203524.0A CN202110203524A CN114963471B CN 114963471 B CN114963471 B CN 114963471B CN 202110203524 A CN202110203524 A CN 202110203524A CN 114963471 B CN114963471 B CN 114963471B
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Prior art keywords
water
load
air conditioning
conditioning system
load demand
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CN114963471A (en
Inventor
任建华
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GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
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GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
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Publication of CN114963471A publication Critical patent/CN114963471A/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
    • 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
    • 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
    • F24F11/88—Electrical aspects, e.g. circuits
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention provides a control method of an air conditioning system, the air conditioning system and a readable storage medium, wherein the control method comprises the following steps: acquiring a first load demand of an indoor unit and a second load demand of a water consumption assembly; determining a second load threshold of the water-using assembly according to the first load demand and the first load threshold of the outdoor unit; and adjusting the opening degree of the throttling element according to the second load demand and the second load threshold value. Therefore, the circulating refrigerant quantity flowing into the water-using component can be changed under the condition of meeting the running requirement of the indoor unit, the on-demand distribution of the refrigerant quantity of the water-using component is realized, the heat exchange requirement of the water-using component and the lower outdoor machine power output are considered, the efficient regulation of the air conditioning system is facilitated, and the requirements of user comfort are met at the initial stage, the middle stage and the later stage of running the air conditioning system.

Description

Control method of air conditioning system, air conditioning system and readable storage medium
Technical Field
The present invention relates to the technical field of air conditioning systems, and in particular, to a control method of an air conditioning system, and a readable storage medium.
Background
In the related art, the floor heating of the air conditioner is independently started, the temperature is limited by factors such as preheating heat transfer of the floor heating, the environment temperature generally needs 3 hours to reach the set temperature, and the air supply and heating of the indoor unit of the air conditioner are independently started, so that the temperature needs about 20 minutes. Meanwhile, the floor heating and indoor unit is started, and because the heat capacity of the outdoor machine is limited, the indoor unit cannot be utilized to quickly enable a room to reach a set temperature in the initial heating stage, and the floor heating cannot be utilized to well keep the room temperature in the later heating stage, so that the capacities of the floor heating and indoor unit are not fully exerted, and the user experience is poor.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
To this end, a first aspect of the present invention provides a control method of an air conditioning system.
The second aspect of the present invention also provides an air conditioning system.
A third aspect of the present invention also provides a readable storage medium.
In view of the above, a first aspect of the present invention provides a control method of an air conditioning system, the air conditioning system including an outdoor unit, a water consumption assembly and an indoor unit, the water consumption assembly and the indoor unit being connected to the outdoor unit, the water consumption assembly including a throttling element for controlling an amount of refrigerant flowing into the water consumption assembly; the control method comprises the following steps: acquiring a first load demand of an indoor unit and a second load demand of a water consumption assembly; determining a second load threshold of the water-using assembly according to the first load demand and the first load threshold of the outdoor unit; and adjusting the opening degree of the throttling element according to the second load demand and the second load threshold value.
In the technical scheme, when the indoor unit and the water consumption assembly need to work simultaneously, the first load requirement and the second load requirement of the current indoor unit and the water consumption assembly, namely the heat exchange quantity required by the indoor unit and the water consumption assembly, are acquired. Because the water consumption assembly and the indoor unit share the same outdoor unit, the difference value operation is carried out on the first load threshold value and the first load requirement of the outdoor unit, and the obtained second load threshold value of the water consumption assembly, namely the maximum heat exchange amount which can be distributed to the water consumption assembly by the outdoor unit is determined according to the maximum heat exchange amount which can be provided by the outdoor unit and the heat exchange amount which is required by the indoor unit during operation. The opening degree of the throttling element is dynamically adjusted through the relation between the second load requirement of the water use component and the second load threshold value, so that the circulating refrigerant quantity flowing into the water use component can be changed under the condition of meeting the running requirement of the indoor unit, the on-demand distribution of the refrigerant quantity of the water use component is realized, the heat exchange requirement of the water use component and the lower outdoor machine capacity output are considered, the efficient adjustment of an air conditioning system is facilitated, and the requirements of user comfort are met at the initial stage, the middle stage and the later stage of the running of the air conditioning system.
Further, the air conditioning system comprises an outdoor unit, a water consumption assembly and an indoor unit, wherein the water consumption assembly, the indoor unit and the outdoor unit form a refrigerant circulation pipeline in parallel connection. The outdoor unit is provided with an outdoor heat exchanger communicated with the refrigerant pipeline and a compressor assembly for driving the refrigerant to circulate. Each indoor unit comprises an indoor heat exchanger communicated with the refrigerant pipeline and an indoor unit throttling element for adjusting the flow of the refrigerant, and the number of the indoor heat exchangers can be one or more. The water consumption component comprises a water side heat exchanger, a water pump for driving liquid to flow and a water consumption component throttling element for regulating the flow of the refrigerant. The air conditioning system further comprises a return air temperature sensor, an indoor heat exchanger temperature sensor arranged on the indoor heat exchanger or an air outlet temperature sensor at an air outlet of the indoor unit, an inlet and outlet water temperature sensor arranged on the water side heat exchanger, an outdoor heat exchanger temperature sensor arranged on the outdoor heat exchanger and an environment temperature sensor.
Specifically, the water use assembly can be applied to water use scenes such as a floor heating system, a water heater system and the like.
According to the control method of the air conditioning system provided by the invention, the control method can also have the following additional technical characteristics:
In the above technical solution, further, adjusting the opening of the throttle member according to the second load requirement and the second load threshold value includes: based on the second load demand being greater than a second load threshold, adjusting the opening of the throttling element to a first opening corresponding to the second load threshold; and adjusting the opening degree of the throttling element to a second opening degree corresponding to the second load demand based on the second load demand being smaller than or equal to a second load threshold.
In this solution, when the second load demand is greater than the second load threshold, it is indicated that the amount of heat exchange currently required by the water usage assembly exceeds the maximum amount of heat exchange that the outdoor unit can provide to the water usage assembly. At this time, if the refrigerant quantity is still distributed to the water using component according to the second load requirement, the heat exchange efficiency of the indoor unit will be affected, and the requirement of the user on rapid heating or cooling of the air conditioner cannot be met. For this purpose, the opening of the throttle element of the water supply unit is adjusted to a first opening corresponding to the second load threshold, i.e. the opening is reduced on the basis of the second opening required for the second load demand. Therefore, under the condition of ensuring normal operation of the indoor unit, more heat exchange capacity is reasonably distributed to the water-using component, the air outlet temperature of the indoor unit, which is caused by excessively low condensing pressure after the condensation of the water-side heat exchanger, is lower than the comfort temperature, the use experience of a user is not influenced, the water-using component is ensured to be capable of gradually exchanging heat, the preheating time of the water-using component is reduced, and the comfort of the middle and later periods of the operation of the water-using component is ensured.
Further, when the second load demand is smaller than or equal to the second load threshold, it is indicated that the heat exchange amount required by the current water usage assembly does not exceed the maximum heat exchange amount that the outdoor unit can provide for the water usage assembly, that is, the outdoor unit can simultaneously satisfy the heat exchange demands of the current indoor unit and the water usage assembly, and then the opening of the throttling element is adjusted to a second opening corresponding to the second load demand. Therefore, on the basis of simultaneously meeting the first load requirement of the indoor unit and the second load requirement of the water using component, the energy output of the outdoor unit is reduced, and the resource consumption is saved.
In any of the above solutions, further, after obtaining the first load requirement of the indoor unit and the second load requirement of the water consumption assembly, the method further includes: determining an operating parameter of the air conditioning system according to the first load demand and the second load demand; controlling the air conditioning system to work according to the operation parameters; the operation parameters comprise operation frequency, operation power and opening degree of the throttling element.
In this solution, after determining the first load demand of the indoor unit and the second load demand of the water usage assembly. Comparing the first load demand with a preset indoor unit load range, and determining the operation parameters of the indoor unit and the outdoor unit corresponding to the first load demand when the indoor unit works according to the relation between the preset indoor unit load range and the preset operation parameters based on the fact that the first load demand belongs to the preset indoor unit load range. And simultaneously, comparing the second load requirement with a preset water component load range, and determining the operation parameters of the water component and the outdoor unit corresponding to the second load requirement when the water component works according to the relation between the preset water component load range and the preset operation parameters based on the fact that the second load requirement belongs to the preset water component load range. And controlling the indoor unit, the outdoor unit and the water using assembly to work according to the obtained operation parameters so as to meet the use requirement of a user on the air conditioning system.
The operation parameters comprise operation frequency, operation power and opening degree of the throttling element.
In any of the above solutions, further, determining an operation parameter of the air conditioning system according to the first load requirement and the second load requirement includes: determining an operating parameter from the first load threshold based on the sum of the first load demand and the second load demand being greater than the first load threshold; and determining an operating parameter according to the sum of the first load demand and the second load demand based on the sum of the first load demand and the second load demand being less than or equal to a first load threshold.
In the technical scheme, when the sum of the first load demand and the second load demand is detected to be larger than the first load threshold, the maximum load capacity of the outdoor unit is proved to be incapable of supporting the indoor unit and the water consumption component to work simultaneously according to the demand, and the operation parameter corresponding to the first load threshold is determined according to the relation between the preset outdoor unit load range and the preset operation parameter, so that the use demand of a user on an air conditioning system is met as much as possible, overload operation of the outdoor unit is prevented, and the use safety of the air conditioning system is improved. When the sum of the first load demand and the second load demand is detected to be smaller than or equal to a first load threshold value, the outdoor unit can support the indoor unit and the water consumption component to work simultaneously according to the demands, and the air conditioner is controlled to work according to the operation parameters corresponding to the load demands of the indoor unit and the water consumption component so as to meet the use demands of users on an air conditioning system.
In any of the above solutions, further, obtaining the first load requirement of the indoor unit includes: acquiring a first environment temperature of a space where an indoor unit is located and a target air outlet temperature of the indoor unit; and determining a first load demand according to the first environment temperature and the target air outlet temperature.
In the technical scheme, the first environment temperature of the space where the indoor unit is located and the target air outlet temperature of the indoor unit set by a user are detected, the temperature change requirement of the indoor unit is calculated according to the difference between the target air outlet temperature and the first environment temperature, and then the first load requirement required for enabling the first environment temperature to reach the target air outlet temperature is determined by combining the unit heat exchange quantity of the indoor unit and the outdoor unit.
In any of the above technical solutions, further comprising: acquiring the air outlet temperature of the indoor unit; and correcting the first load demand according to the temperature of the air outlet.
In the technical scheme, after the first load demand is calculated by utilizing the first environment temperature and the target air outlet temperature, considering that heat consumption exists in the air supply process of the indoor unit in an air conditioning heating mode, in order to effectively ensure that the air outlet temperature of the indoor unit reaches the target air outlet temperature set by a user, the corresponding offset is determined by the detected air outlet temperature, and the target air outlet temperature set by the user is increased according to the offset, so that the first load demand is corrected, the heat exchange efficiency of the indoor unit is improved, and the body feeling demand of the user is met.
In any of the above solutions, further, obtaining the second load demand of the water use assembly includes: acquiring the current water temperature and the target water outlet temperature of the water using component; determining a second load demand according to the current water temperature and the target water outlet temperature; wherein the current water temperature comprises a water inlet temperature and/or a water outlet temperature.
In the technical scheme, the current water temperature in the water use assembly and the target water outlet temperature set by a user are detected. And calculating the temperature change requirement of the water consumption assembly according to the difference between the target water outlet temperature and the current water temperature, and determining a second load requirement for the water outlet temperature of the water consumption assembly to reach the target water outlet temperature by combining the heat exchange quantity of the water consumption assembly and the outdoor unit. The opening degree of the throttling element of the water outlet assembly is dynamically adjusted according to the second load requirement, so that reasonable distribution of the refrigerant is realized, and the heat exchange efficiency of the air conditioning system is improved.
Specifically, the current water temperature of the water use assembly comprises a water inlet temperature and/or a water outlet temperature, and on the basis that the heat exchange capacity of the water side heat exchanger of the water use assembly is unchanged, the water inlet temperature and the water outlet temperature of the water use assembly have a corresponding relationship.
In any of the above embodiments, before determining the second load threshold of the water usage module according to the first load requirement and the first load threshold of the outdoor unit, the method further includes: acquiring a second environment temperature of a space where the outdoor unit is located and a heat exchanger temperature of the outdoor unit; a first load threshold is determined based on the second ambient temperature and the heat exchanger temperature.
In the technical scheme, the outdoor temperature sensor arranged in the space where the outdoor unit is located is used for detecting the second environment temperature, and the outdoor heat exchanger temperature sensor is used for detecting the heat exchanger temperature of the outdoor unit. A first load threshold that can be provided by the outdoor unit is determined based on the second ambient temperature and the heat exchanger temperature. The air conditioning system is convenient to combine the indoor first ambient temperature, the body feeling requirement of a user, the outdoor second ambient temperature and the output of the total capacity of the water temperature control outdoor unit, and is more beneficial to the efficient adjustment of the air conditioning system.
According to a second aspect of the present invention, there is also provided an air conditioning system comprising: an outdoor unit; the indoor unit is connected with the outdoor unit; the water consumption assembly is connected with the outdoor unit and is provided with a throttling piece, and the throttling piece is used for controlling the refrigerant quantity flowing into the water consumption assembly; a memory storing a program or instructions; and the processor is connected with the memory, the water consumption assembly, the indoor unit and the outdoor unit, and realizes the control method of the air conditioning system provided in the first aspect when the processor executes programs or instructions. Therefore, the air conditioning system has all the advantages of the control method of the air conditioning system according to the first aspect, and will not be repeated.
According to a third aspect of the present invention, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the control method of the air conditioning system set forth in the first aspect. Therefore, the readable storage medium has all the advantages of the control method of the air conditioning system according to the first aspect, and will not be repeated.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic flow diagram of a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 2 is a second flow chart of a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 3 is a third flow chart illustrating a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 4 is a flow chart showing a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 5 is a flow chart showing a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 6 is a flow chart showing a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 7 is a flow chart of a control method of an air conditioning system according to an embodiment of the present invention;
FIG. 8 shows a schematic block diagram of an air conditioning system in accordance with one embodiment of the present invention;
fig. 9 is a schematic view showing the structure of an air conditioning system according to an embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 9 is:
800 air conditioning system, 802 outdoor unit, 804 indoor unit, 806 water component, 812 indoor heat exchanger temperature sensor, 814 inlet water temperature sensor, 816 outlet water temperature sensor, 818 return air temperature sensor, 8042 indoor heat exchanger, 8044 restrictor, 8062 restrictor, 8064 water side heat exchanger, 8066 water pump, 8068 expansion tank.
Detailed Description
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Control methods of an air conditioning system, and a readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 9.
Example 1:
As shown in fig. 1, according to an embodiment of the first aspect of the present invention, the present invention provides a control method of an air conditioning system, wherein the air conditioning system includes an outdoor unit, a water consumption assembly, and an indoor unit, the water consumption assembly and the indoor unit are connected to the outdoor unit, the water consumption assembly includes a throttling element for controlling an amount of refrigerant flowing into the water consumption assembly; comprising the following steps:
step 102, acquiring a first load demand of an indoor unit and a second load demand of a water consumption assembly;
104, determining a second load threshold of the water-using assembly according to the first load requirement and a first load threshold of the outdoor unit;
And step 106, adjusting the opening degree of the throttling element according to the second load requirement and the second load threshold value.
In this embodiment, when the indoor unit and the water usage assembly need to operate simultaneously, the first load demand and the second load demand of the current indoor unit and the water usage assembly, that is, the heat exchange amount required by the indoor unit and the water usage assembly, are acquired. Because the water consumption assembly and the indoor unit share the same outdoor unit, the difference value operation is carried out on the first load threshold value and the first load requirement of the outdoor unit, and the obtained second load threshold value of the water consumption assembly, namely the maximum heat exchange amount which can be distributed to the water consumption assembly by the outdoor unit is determined according to the maximum heat exchange amount which can be provided by the outdoor unit and the heat exchange amount which is required by the indoor unit during operation. The opening degree of the throttling element is dynamically adjusted through the relation between the second load requirement of the water use component and the second load threshold value, so that the circulating refrigerant quantity flowing into the water use component can be changed under the condition of meeting the running requirement of the indoor unit, the on-demand distribution of the refrigerant quantity of the water use component is realized, the heat exchange requirement of the water use component and the lower outdoor machine capacity output are considered, the efficient adjustment of an air conditioning system is facilitated, and the requirements of user comfort are met at the initial stage, the middle stage and the later stage of the running of the air conditioning system.
Wherein, the throttling element comprises a proportional valve, a switch valve and the like.
Further, the air conditioning system comprises an outdoor unit, a water consumption assembly and an indoor unit, wherein the water consumption assembly, the indoor unit and the outdoor unit form a refrigerant circulation pipeline in parallel connection. The outdoor unit is provided with an outdoor heat exchanger communicated with the refrigerant pipeline and a compressor assembly for driving the refrigerant to circulate. The number of the indoor units can be one or more, and each indoor unit comprises an indoor heat exchanger communicated with the refrigerant pipeline and an indoor unit throttling element for adjusting the flow of the refrigerant. The water consumption component comprises a water side heat exchanger, a water pump for driving liquid to flow and a water consumption component throttling element for regulating the flow of the refrigerant. The air conditioning system further comprises a return air temperature sensor, an indoor heat exchanger temperature sensor arranged on the indoor heat exchanger or an air outlet temperature sensor at an air outlet of the indoor unit, an inlet and outlet water temperature sensor arranged on the water side heat exchanger, an outdoor heat exchanger temperature sensor arranged on the outdoor heat exchanger and an environment temperature sensor.
Further, the second ambient temperature is detected by an outdoor temperature sensor provided in a space where the outdoor unit is located, and the heat exchanger temperature of the outdoor unit is detected by an outdoor heat exchanger temperature sensor. A first load threshold that can be provided by the outdoor unit is determined based on the second ambient temperature and the heat exchanger temperature. The air conditioning system is convenient to combine the indoor first ambient temperature, the body feeling requirement of a user, the outdoor second ambient temperature and the output of the total capacity of the water temperature control outdoor unit, and is more beneficial to the efficient adjustment of the air conditioning system.
In a specific embodiment, the water using component can be applied to water using scenes such as a floor heating system, a water heater system and the like.
Example 2:
as shown in fig. 2, according to an embodiment of the present invention, there is provided a control method of an air conditioning system, including:
step 202, acquiring a first load demand of an indoor unit and a second load demand of a water consumption assembly;
step 204, determining a second load threshold of the water-using assembly according to the first load requirement and the first load threshold of the outdoor unit;
step 206, if the second load demand is greater than the second load threshold, go to step 208, if not, go to step 210;
step 208, adjusting the opening of the throttling element to a first opening corresponding to the second load threshold;
step 210, adjusting the opening of the throttling element to a second opening corresponding to the second load demand.
In this embodiment, when the second load demand is greater than the second load threshold, it is indicated that the amount of heat exchange currently required by the water usage assembly exceeds the maximum amount of heat exchange that the outdoor unit is capable of providing to the water usage assembly. At this time, if the refrigerant quantity is still distributed to the water using component according to the second load requirement, the heat exchange efficiency of the indoor unit will be affected, and the requirement of the user on rapid heating or cooling of the air conditioner cannot be met. For this purpose, the opening of the throttle element of the water supply unit is adjusted to a first opening corresponding to the second load threshold, i.e. the opening is reduced on the basis of the second opening required for the second load demand. Therefore, under the condition of ensuring normal operation of the indoor unit, more heat exchange capacity is reasonably distributed to the water-using component, the air outlet temperature of the indoor unit, which is caused by excessively low condensing pressure after the condensation of the water-side heat exchanger, is lower than the comfort temperature, the use experience of a user is not influenced, the water-using component is ensured to be capable of gradually exchanging heat, the preheating time of the water-using component is reduced, and the comfort of the middle and later periods of the operation of the water-using component is ensured.
Further, when the second load demand is smaller than or equal to the second load threshold, it is indicated that the heat exchange amount required by the current water usage assembly does not exceed the maximum heat exchange amount that the outdoor unit can provide for the water usage assembly, that is, the outdoor unit can simultaneously satisfy the heat exchange demands of the current indoor unit and the water usage assembly, and then the opening of the throttling element is adjusted to a second opening corresponding to the second load demand. Therefore, on the basis of simultaneously meeting the first load requirement of the indoor unit and the second load requirement of the water using component, the energy output of the outdoor unit is reduced, and the resource consumption is saved.
In a specific embodiment, in a heating scenario of an air conditioning system, taking an allowable maximum output capacity of an outdoor unit as an example, a first load requirement of an indoor unit and a second load requirement of a water consumption assembly are both 6KW, in order to ensure the heating requirement of the indoor unit, the outdoor unit can allocate a load of 4KW to the water consumption assembly, and then the throttle is controlled according to a first opening corresponding to a refrigerant amount required by 4 KW. If the first load demand of the indoor unit is reduced to 2KW, the load which can be distributed to the water consuming component by the outdoor unit is updated to 8KW, and the load of the outdoor unit can not only meet the demands of the indoor unit and the water consuming component, but also have a surplus, and the throttle piece is controlled according to the second opening degree corresponding to the refrigerant quantity required by 6KW, so that the energy output of the outdoor unit is reduced, and the resource consumption is saved.
Example 3:
as shown in fig. 3, according to an embodiment of the present invention, there is provided a control method of an air conditioning system, including:
Step 302, acquiring a first load demand of an indoor unit and a second load demand of a water consumption assembly;
step 304, determining an operation parameter of the air conditioning system according to the first load demand and the second load demand;
step 306, controlling the air conditioning system to work according to the operation parameters;
step 308, determining a second load threshold of the water-using assembly according to the first load requirement and the first load threshold of the outdoor unit;
Step 310, if the second load demand is greater than the second load threshold, go to step 312, if not, go to step 314;
Step 312, adjusting the opening of the throttling element to a first opening corresponding to the second load threshold;
And step 314, adjusting the opening of the throttling element to a second opening corresponding to the second load demand.
The operation parameters comprise operation frequency, operation power and opening degree of the throttling element.
In this embodiment, after the first load demand of the indoor unit and the second load demand of the water usage assembly are determined. Comparing the first load demand with a preset indoor unit load range, and determining the operation parameters of the indoor unit and the outdoor unit corresponding to the first load demand when the indoor unit works according to the relation between the preset indoor unit load range and the preset operation parameters based on the fact that the first load demand belongs to the preset indoor unit load range. And simultaneously, comparing the second load requirement with a preset water component load range, and determining the operation parameters of the water component and the outdoor unit corresponding to the second load requirement when the water component works according to the relation between the preset water component load range and the preset operation parameters based on the fact that the second load requirement belongs to the preset water component load range. And controlling the indoor unit, the outdoor unit and the water using assembly to work according to the obtained operation parameters so as to meet the use requirement of a user on the air conditioning system.
It can be understood that after controlling the opening of the throttling element according to the second load demand of the water consuming assembly, if the second load demand is detected to be larger than the second load threshold value, the opening of the throttling element is reduced to the first opening corresponding to the second load threshold value.
Further, if the opening degree of the throttling element in the operation parameters corresponding to the second load requirement exceeds the maximum opening degree allowed by the throttling element, the air conditioning system is operated according to the maximum opening degree of the throttling element.
Example 4:
As shown in fig. 4, according to an embodiment of the present invention, there is provided a control method of an air conditioning system, including:
Step 402, acquiring a first load requirement of an indoor unit and a second load requirement of a water consumption assembly;
step 404, if the sum of the first load demand and the second load demand is greater than the first load threshold, step 406 is entered, and if not, step 408 is entered;
step 406, determining an operation parameter according to the first load threshold;
Step 408, determining an operating parameter based on the sum of the first load demand and the second load demand;
step 410, controlling the air conditioning system to work according to the operation parameters;
Step 412, determining a second load threshold of the water-consuming component according to the first load requirement and the first load threshold of the outdoor unit;
step 414, adjusting the opening of the throttle according to the second load demand and the second load threshold.
The operation parameters comprise operation frequency, operation power and opening degree of the throttling element.
In this embodiment, when the sum of the first load demand and the second load demand is detected to be greater than the first load threshold, it is indicated that the maximum load capacity of the outdoor unit cannot support the indoor unit and the water consumption component to work simultaneously as required, and then the operation parameter corresponding to the first load threshold is determined according to the relationship between the preset outdoor unit load range and the preset operation parameter, so that the use requirement of the user on the air conditioning system is met as much as possible, the overload operation of the outdoor unit is prevented, and the use safety of the air conditioning system is improved. When the sum of the first load demand and the second load demand is detected to be smaller than or equal to a first load threshold value, the outdoor unit can support the indoor unit and the water consumption component to work simultaneously according to the demands, and the air conditioner is controlled to work according to the operation parameters corresponding to the load demands of the indoor unit and the water consumption component so as to meet the use demands of users on an air conditioning system.
Example 5:
As shown in fig. 5, according to an embodiment of the present invention, there is provided a control method of an air conditioning system, including:
Step 502, acquiring a first environment temperature of a space where an indoor unit is located, a target air outlet temperature of the indoor unit, a current water temperature of a water using component and a target water outlet temperature of the water using component;
Step 504, determining a first load demand according to a first ambient temperature and a target outlet air temperature;
Step 506, determining a second load demand according to the current water temperature and the target water outlet temperature;
Step 508, determining a second load threshold of the water-using assembly according to the first load demand and the first load threshold of the outdoor unit;
step 510, adjusting the opening of the throttling element according to the second load requirement and the second load threshold.
In this embodiment, a first ambient temperature of a space in which the indoor unit is located and a target outlet air temperature of the indoor unit set by a user are detected, and a current water temperature in the water use assembly and a target outlet air temperature set by the user are detected. And calculating the temperature change requirement of the indoor unit according to the difference between the target air outlet temperature and the first ambient temperature, and determining the first load requirement required for enabling the first ambient temperature to reach the target air outlet temperature by combining the unit heat exchange quantity of the indoor unit and the unit heat exchange quantity of the outdoor unit. And calculating the temperature change requirement of the water consumption assembly according to the difference between the target water outlet temperature and the current water temperature, and determining a second load requirement for the water outlet temperature of the water consumption assembly to reach the target water outlet temperature by combining the heat exchange quantity of the water consumption assembly and the outdoor unit. The opening degree of the throttling element of the water outlet assembly is dynamically adjusted according to the second load requirement, so that reasonable distribution of the refrigerant is realized, and the heat exchange efficiency of the air conditioning system is improved.
Specifically, the first ambient temperature may be detected by a return air temperature sensor in the indoor unit, or may be detected by an ambient temperature sensor installed in a space where the indoor unit is located. The current water temperature of the water consumption assembly comprises water inlet temperature and/or water outlet temperature, and on the basis that the heat exchange capacity of the water side heat exchanger of the water consumption assembly is unchanged, the water inlet temperature and the water outlet temperature of the water consumption assembly have a corresponding relation.
It will be appreciated that during operation of the air conditioning system, as the first ambient temperature gradually approaches the target outlet air temperature, the first load demand decreases, and the second compliance threshold that the outdoor unit is capable of assigning to the outlet air assembly increases. Similarly, in the working process of the air conditioning system, as the actual outlet water temperature of the outlet water assembly gradually approaches the target outlet water temperature, the second load demand is reduced, and the output of the outdoor unit can be reduced on the basis of meeting the first load demand of the indoor unit.
Example 6:
as shown in fig. 6, according to an embodiment of the present invention, there is provided a control method of an air conditioning system, including:
step 602, obtaining a first environment temperature of a space where an indoor unit is located, a target air outlet temperature of the indoor unit, an air outlet temperature of the indoor unit, a current water temperature of a water using component and a target water outlet temperature of the water using component;
Step 604, determining a first load demand according to the first ambient temperature and the target outlet air temperature;
step 606, correcting the first load demand according to the outlet air temperature;
Step 608, determining a second load demand according to the current water temperature and the target water outlet temperature;
Step 610, determining a second load threshold of the water-consuming component according to the first load requirement and the first load threshold of the outdoor unit;
step 612, adjusting the opening of the throttle according to the second load demand and the second load threshold.
In this embodiment, after the first load demand is calculated by using the first ambient temperature and the target air outlet temperature, considering that heat consumption exists in the air supply process of the indoor unit in the air conditioning heating mode, in order to effectively ensure that the air outlet temperature of the indoor unit reaches the target air outlet temperature set by the user, determining the corresponding offset by the detected air outlet temperature, and increasing the target air outlet temperature set by the user according to the offset, thereby correcting the first load demand, further improving the heat exchange efficiency of the indoor unit, and meeting the body feeling demand of the user.
In a specific embodiment, the target air outlet temperature set by the user is 35 ℃, but the user can feel warm when the actual air outlet temperature reaches more than 40 ℃, when the air outlet temperature is 33 ℃ when the indoor unit is detected to work according to the operation parameters corresponding to 35 ℃, the offset is 7 ℃ according to the corresponding relation between the preset air outlet temperature and the offset, and then the indoor unit is controlled to work according to the operation parameters corresponding to the target air outlet temperature of 42 ℃ so that the actual air outlet temperature reaches more than 40 ℃, and the body feeling requirement of the user is met. The corresponding relation between the air outlet temperature and the offset can be reasonably set according to historical operation data of the air conditioning system and user requirements.
Specifically, the air outlet temperature can be detected through an indoor heat exchanger temperature sensor on the indoor heat exchanger, and also can be detected through an air outlet to annual sensor in the indoor unit.
Example 7:
as shown in fig. 7, taking an example of applying the water-using assembly to floor heating, a control method of an air conditioning system is provided according to an embodiment of the present invention, including:
Step 702, extracting indoor first environment temperature, water inlet and outlet temperatures of a water using component and outdoor second environment temperature;
Step 704, calculating a first load demand H1 required by the indoor unit according to the indoor first ambient temperature and the default most comfortable target air outlet temperature;
Step 706, calculating a second load demand H2 required by the water using assembly according to the water inlet and outlet temperature and the set water temperature of the water using assembly;
step 708, calculating a first load threshold H3 that the outdoor unit can provide according to the outdoor second ambient temperature and the outdoor heat exchanger temperature;
Step 710, the outdoor unit proceeds to step 712 if the total load requirement h1+h2 is greater than H3, and proceeds to step 714 if not;
Step 712, directly adjusting the frequency, the fan, the valve and other components to a proper parameter interval according to H3;
Step 714, adjusting the frequency, fans, valves and other components to appropriate parameter intervals according to H1 +H2;
step 716, a first load threshold H3 of the outdoor unit-a first load requirement h1 required by the indoor unit = a second load threshold Δh available for the water use component;
Step 718, comparing the second load threshold Δh with the second load demand H2, and adjusting the opening of the refrigerant side throttling element of the water use assembly in combination with the actual water outlet temperature and the condensing pressure until the water use assembly is updated to the maximum opening or Δh > H2, and directly adjusting according to H2.
In this embodiment, the air conditioning system includes an air conditioning indoor unit and a water-using assembly, the indoor unit can obtain a temperature sensor in the middle of its own heat exchanger or an air-out temperature sensor, the water-using assembly includes an adjustable refrigerant-side throttling part and a water-side temperature sensor, and the outdoor unit includes at least an ambient temperature sensor and an outdoor heat exchanger temperature sensor. According to the current temperature of the middle part of a condenser or the air outlet temperature of the indoor unit, the return air temperature and the most comfortable target air outlet temperature, the required actual capacity requirement (first load requirement H1) of the indoor unit is calculated, the actual capacity requirement (second load requirement H2) of a water component is calculated according to the current water temperature and the set water temperature of the water component for starting, the capacity (H1+H2) required to be provided by a complete machine system is calculated, and the maximum capacity (first load threshold H3) actually provided by the outdoor unit is calculated according to the outdoor environment temperature and the outdoor heat exchanger temperature. And calculating the maximum capacity actually available to the outdoor unit, the actual capacity requirement required by the indoor unit and the capacity available to the water consuming assembly (a second load threshold delta H), adjusting the opening degree of the refrigerant side throttling part of the water consuming assembly according to the capacity available to the water consuming assembly and the actual water outlet temperature until the opening degree of the throttling part is updated to the maximum opening degree or the capacity available to the water consuming assembly is greater than the actual capacity requirement of the water consuming assembly, and reducing the capacity output of the outdoor unit.
Through the technical scheme, the air outlet temperature of the indoor unit can be effectively ensured to meet the body feeling requirement of a user, for example, the air outlet temperature is ensured to be warm to the user above 40 ℃. And under the premise of effectively ensuring that the air outlet temperature of the indoor unit meets the body feeling requirement of a user, more capacities are reasonably distributed to the water consumption component, and under the condition of ensuring that the air conditioning experience of the user is not influenced, the condition that the air outlet temperature of the indoor unit is lower than the comfort temperature due to excessively low condensing pressure caused by excessive condensation of the water side is avoided, meanwhile, the water temperature is gradually increased, the preheating time of a floor heating system is shortened, and the comfort of middle-stage and later-stage floor heating is ensured. In addition, the influence of indoor temperature, the body feeling requirement of a user, outdoor temperature and water temperature on the output of the total capacity of the outdoor unit is comprehensively considered, and the high-efficiency regulation of the whole system is facilitated.
Example 8:
As shown in fig. 8, according to an embodiment of the second aspect of the present invention, there is provided an air conditioning system 800 including: an outdoor unit 802, an indoor unit 804, a water usage module 806, a memory 808, and a processor 810.
In detail, the indoor unit 804 and the water using unit 806 are connected to the outdoor unit 802. The water usage module 806 is provided with a throttle 8062, and the throttle 8062 is used for controlling the amount of refrigerant flowing into the water usage module 806. Memory 808 stores programs or instructions; the processor 810 is connected to the memory 808, the water using unit 806, the indoor unit 804 and the outdoor unit 802, and the processor 810 executes programs or instructions to implement the following steps: acquiring a first load demand of the indoor unit 804 and a second load demand of the water consuming component 806; determining a second load threshold of the water usage module 806 according to the first load demand and the first load threshold of the outdoor unit; the opening degree of the throttle 8062 is adjusted according to the second load demand and the second load threshold value.
In this embodiment, the amount of the circulating refrigerant flowing into the water consuming component 806 can be changed under the condition of meeting the operation requirement of the indoor unit 804, so as to realize the on-demand distribution of the amount of the refrigerant flowing into the water consuming component 806, and the heat exchange requirement of the water consuming component 806 and the lower capacity output of the outdoor unit 802 are considered, which is beneficial to the efficient adjustment of the air conditioning system 800, so that the initial stage, the middle and the later stages of the operation of the air conditioning system 800 meet the user comfort requirement.
Further, as shown in fig. 9, the outdoor unit 802 has an outdoor heat exchanger (not shown) and a compressor assembly (not shown) for driving the refrigerant circulation. The indoor unit 804 includes two indoor heat exchangers 8042 and a flow restrictor 8044 for adjusting the refrigerant flow rate of the indoor unit, and the two indoor heat exchangers 8042 may be located in the same space or different spaces. The water-using assembly 806 includes a water side heat exchanger 8064, a water pump 8066 for driving the flow of liquid, a throttle 8062 for regulating the flow of refrigerant, and an expansion tank 8068 for regulating the amount and pressure of system water. The water usage module 806, the indoor unit 804 and the outdoor unit 802 constitute a refrigerant circulation line in parallel. The air conditioning system 800 further includes a return air temperature sensor 818 disposed within the indoor unit 804, an indoor heat exchanger temperature sensor 812 disposed on the indoor heat exchanger 8042 or an outlet air temperature sensor (not shown) at an outlet of the indoor unit 804, a inlet water temperature sensor 814, an outlet water temperature sensor 816 disposed on the water side heat exchanger 8064, and an outdoor heat exchanger temperature sensor (not shown) and an ambient temperature sensor (not shown) disposed on the outdoor heat exchanger.
Example 9:
According to an embodiment of the third aspect of the present invention, a readable storage medium is provided, on which a program or an instruction is stored, which when executed by a processor, implements the control method of the air conditioning system set forth in the embodiment of the first aspect. Therefore, the readable storage medium has all the advantages of the control method of the air conditioning system according to the embodiment of the first aspect, and will not be repeated.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, 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 present invention. In this specification, schematic representations of the above terms do not necessarily 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.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A control method of an air conditioning system, wherein the air conditioning system comprises an outdoor unit, a water consumption assembly and an indoor unit, the water consumption assembly comprises a throttling piece for controlling the amount of refrigerant flowing into the water consumption assembly; the control method comprises the following steps:
Acquiring a first load requirement of the indoor unit and a second load requirement of the water consuming component;
Determining a second load threshold of the water usage assembly according to the first load demand and a first load threshold of the outdoor unit;
adjusting the opening of the throttling element according to the second load demand and the second load threshold;
And adjusting the opening of the throttling element according to the second load demand and the second load threshold, including:
Based on the second load demand being greater than the second load threshold, adjusting the opening of the throttling element to a first opening corresponding to the second load threshold;
And adjusting the opening degree of the throttling element to a second opening degree corresponding to the second load demand based on the second load demand being smaller than or equal to the second load threshold.
2. The method of controlling an air conditioning system according to claim 1, further comprising, after the obtaining the first load demand of the indoor unit and the second load demand of the water consuming assembly:
determining an operating parameter of the air conditioning system based on the first load demand and the second load demand;
controlling the air conditioning system to work according to the operation parameters;
the operation parameters comprise operation frequency, operation power and opening degree of the throttling element.
3. The method of controlling an air conditioning system according to claim 2, wherein the determining the operation parameters of the air conditioning system includes:
determining the operating parameter according to the first load threshold based on the sum of the first load demand and the second load demand being greater than the first load threshold;
and determining the operation parameter according to the sum of the first load demand and the second load demand based on the sum of the first load demand and the second load demand being smaller than or equal to the first load threshold.
4. A control method of an air conditioning system according to any one of claims 1 to 3, wherein the obtaining the first load demand of the indoor unit includes:
Acquiring a first environment temperature of a space where the indoor unit is located and a target air outlet temperature of the indoor unit;
And determining the first load demand according to the first environment temperature and the target air outlet temperature.
5. The control method of an air conditioning system according to claim 4, further comprising:
Acquiring the air outlet temperature of the indoor unit;
and correcting the first load demand according to the air outlet temperature.
6. A control method of an air conditioning system according to any of claims 1 to 3, wherein the obtaining the second load demand of the water usage assembly includes:
acquiring the current water temperature and the target water outlet temperature of the water using assembly;
and determining the second load demand according to the current water temperature and the target water outlet temperature.
7. The control method of an air conditioning system according to any one of claims 1 to 3, wherein before determining the second load threshold of the water usage assembly according to the first load demand and the first load threshold of the outdoor unit, further comprising:
acquiring a second environment temperature of a space where the outdoor unit is positioned and a heat exchanger temperature of the outdoor unit;
the first load threshold is determined based on the second ambient temperature and the heat exchanger temperature.
8. An air conditioning system, comprising:
An outdoor unit;
the indoor unit is connected with the outdoor unit;
the water consumption assembly is connected with the outdoor unit and is provided with a throttling element;
A memory storing a program or instructions;
A processor connected to the memory, the water consumption unit, the indoor unit, and the outdoor unit, the processor implementing the control method of the air conditioning system according to any one of claims 1 to 7 when executing the program or the instructions.
9. A readable storage medium having stored thereon a program or instructions, which when executed by a processor performs the control method of an air conditioning system according to any one of claims 1 to 7.
CN202110203524.0A 2021-02-24 2021-02-24 Control method of air conditioning system, air conditioning system and readable storage medium Active CN114963471B (en)

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JP2002142360A (en) * 2000-10-30 2002-05-17 Daikin Ind Ltd Method and apparatus for controlling used power
CN103486692A (en) * 2013-09-17 2014-01-01 青岛海信日立空调系统有限公司 Load self-adaptation variable-frequency multi-connection heat pump system and method for controlling compressor frequency
CN107218707A (en) * 2017-07-17 2017-09-29 珠海格力电器股份有限公司 Air conditioner and partial load control method and device thereof
CN108954712A (en) * 2018-07-23 2018-12-07 广东美的暖通设备有限公司 The control method and control system and air conditioner of air conditioner

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002142360A (en) * 2000-10-30 2002-05-17 Daikin Ind Ltd Method and apparatus for controlling used power
CN103486692A (en) * 2013-09-17 2014-01-01 青岛海信日立空调系统有限公司 Load self-adaptation variable-frequency multi-connection heat pump system and method for controlling compressor frequency
CN107218707A (en) * 2017-07-17 2017-09-29 珠海格力电器股份有限公司 Air conditioner and partial load control method and device thereof
CN108954712A (en) * 2018-07-23 2018-12-07 广东美的暖通设备有限公司 The control method and control system and air conditioner of air conditioner

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