Air conditioning system and control method thereof, storage medium, terminal equipment and server

Abstract

The invention aims at providing a control method of an air conditioning system, the air conditioning system, a computer readable storage medium, mobile terminal equipment and a server so as to at least solve or relieve part of problems existing in the prior art. The air conditioning system comprises a plurality of indoor units arranged in different areas, and the control method comprises the steps that occupation information is obtained, specifically, occupation information of the areas is obtained; an electric energy information acquisition step of acquiring electric energy information including electric energy characteristics; and an energy storage instruction generation step: when the electric energy information satisfies a predetermined energy storage condition, generating an energy storage instruction for the specific area based on the occupation information.

Description

Technical Field

[0001] The present application relates to the field of air conditioning, and specifically to a control method for an air conditioning system, an air conditioning system, a computer-readable storage medium, a mobile terminal device, and a server. Background Art

[0002] The main energy consumption of a building comes from the air conditioning system running in it. The control method of the conventional air conditioning system aims to reduce energy consumption. It adopts a control method that stabilizes the set temperature of the air conditioning system within a specific range during working hours and shuts down the air conditioning system during non-working hours. However, reducing energy consumption may not be equivalent to the rational use of energy, and the control method of the conventional air conditioning system may also affect the comfort level in the building. Summary of the invention

[0003] The present application aims to provide a control method for an air-conditioning system, an air-conditioning system, a computer-readable storage medium, a mobile terminal device, and a server, so as to at least solve or alleviate some of the problems existing in the prior art.

[0004] The first aspect of the present application provides a control method for an air-conditioning system, the air-conditioning system includes multiple indoor units arranged in different areas, and the control method includes: an occupancy information acquisition step, acquiring occupancy information of the area; an electric energy information acquisition step, acquiring electric energy information including electric energy characteristics; an energy storage instruction generation step, when the electric energy information meets a predetermined energy storage condition, generating an energy storage instruction for a specific area based on the occupancy information.

[0005] In the control method of the air-conditioning system of the optional technical solution, the electric energy characteristic is any one of the carbon emission index of the power grid, the cleanliness of the power grid, the proportion of clean electric energy and the proportion of renewable energy.

[0006] In the control method of the air-conditioning system of the optional technical solution, the electric energy characteristics vary with time.

[0007] The control method of the air-conditioning system of the optional technical solution also includes: an energy storage instruction execution step, so that the indoor units arranged in the specific area execute the energy storage instruction.

[0008] In the control method of the air-conditioning system of the optional technical solution, the indoor unit includes a thermostat, and making the indoor unit arranged in a specific area execute the energy storage instruction specifically includes: adjusting the set temperature of the thermostat of the specific area.

[0009] In the control method of the air-conditioning system of the optional technical solution, the indoor unit also includes a fan coil unit or an air valve, so that the indoor unit arranged in a specific area executes the energy storage instruction, specifically including: changing the wind speed of the fan coil unit in the specific area, or changing the opening of the air valve in the specific area, or performing any of the above actions in response to the input from the thermostat in the specific area.

[0010] In the control method of the air-conditioning system of the optional technical solution, the electric energy information is historical electric energy information including historical electric energy characteristics, and in the energy storage instruction generation step, the predetermined energy storage condition is determined based on the comparison result between the historical electric energy characteristics and the threshold.

[0011] In the control method of the air-conditioning system of the optional technical solution, the electric energy information includes real-time electric energy information including real-time electric energy characteristics and historical electric energy information including historical electric energy characteristics. The control method also includes: an electric energy prediction point generating step, generating an electric energy prediction point based on the historical electric energy information; in the energy storage instruction generating step, determining the predetermined energy storage condition based on the comparison result between the electric energy prediction point and the real-time electric energy information.

[0012] In the control method of the air conditioning system of the optional technical solution, the occupancy information is determined based on any one of the number of people in the area, pre-stored area usage information, and thermostat setting temperature schedule information.

[0013] The control method of the air-conditioning system of the optional technical solution also includes: an energy release instruction generation step, when a predetermined energy release condition is met, an energy release instruction is generated.

[0014] In the control method of the air-conditioning system of the optional technical solution, the predetermined energy release condition includes at least any one of the temperature of a specific area reaching a specified value, the occupancy information of a specific area changing in response to an input, and the execution time of an energy storage instruction reaching a specified value.

[0015] The second aspect of the present application provides an air-conditioning system, comprising: a plurality of indoor units arranged in different areas, the indoor units comprising air supply outlets and air exhaust outlets; an air supply duct connecting the plurality of air supply outlets arranged in different areas; an exhaust duct connecting the plurality of exhaust outlets arranged in different areas, and the exhaust duct is connected to the air supply duct; the air-conditioning system executes the control method of the air-conditioning system in any of the above optional technical solutions.

[0016] A third aspect of the present application provides a computer-readable storage medium storing a control program, which, when executed by a processor, implements the control method of the air-conditioning system in any of the above-mentioned optional technical solutions.

[0017] The fourth aspect of the present application provides a mobile terminal device, including: a processor and a memory, the memory storing processor-readable instructions, and the processor executes the control method of the air-conditioning system in any of the above-mentioned optional technical solutions by running the processor-readable instructions.

[0018] The fifth aspect of the present application provides a server, including: a processor and a memory, wherein the memory stores processor-readable instructions, and the processor executes the control method of the air-conditioning system in any of the above-mentioned optional technical solutions by running the processor-readable instructions.

[0019] According to the control method of the air-conditioning system, the air-conditioning system, the computer-readable storage medium, the mobile terminal device, and the server of the present application, the air-conditioning system can use electric energy more reasonably. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram showing a control method of an air conditioning system according to an embodiment of the present application is shown;

[0021] Figure 2 A schematic diagram showing a control method of an air conditioning system according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram showing the steps of generating electric energy prediction points according to an embodiment of the present application is shown;

[0023] Figure 4 A schematic diagram of an air conditioning system according to an embodiment of the present application is shown;

[0024] Figure 5 A schematic diagram of an air conditioning system according to an embodiment of the present application is shown;

[0025] Figure 6 A schematic diagram showing a mobile terminal device according to an embodiment of the present application is shown;

[0026] Figure 7 A schematic diagram of a server according to an embodiment of the present application is shown.

[0027] Reference numerals:

[0028] <Air conditioning system with fan coil unit>

[0029] Air conditioning system 1, thermostat 1011, fan coil 1012, fan 10121, hot coil 10122, cold coil 10123, air supply port 1013, exhaust port 1014, air supply duct 102, fresh air coil 103, fresh air hot coil 1031, fresh air cold coil 1032, exhaust duct 104, heat recovery heat exchanger 105, fresh air fan 106;

[0030] <Variable Air Volume Air Conditioning System>

[0031] Air conditioning system 2, thermostat 2011, air valve 2012, reheat coil 2015, air supply port 2013, air exhaust port 2014, air supply duct 202, central air conditioning coil 203, central air conditioning hot coil 2031, central air conditioning cold coil 2032, exhaust duct 204, return air duct 205, air supply fan 206;

[0032] <Mobile terminal equipment>

[0033] Mobile terminal device 30, processor 31, memory 32;

[0034] <Server>

[0035] Server 40 , processor 41 , memory 42 . DETAILED DESCRIPTION

[0036] It should be noted that the control method of the air-conditioning system, the air-conditioning system, the computer-readable storage medium, the mobile terminal device, the working principle, characteristics and advantages of the server according to the present application will be explained below in an illustrative manner, but it should be understood that all descriptions are given for illustrative purposes only and should not be construed as forming any limitations on the present application.

[0037] In addition, for any single technical feature described or implied in the embodiments mentioned in this document, or any single technical feature displayed or implied in the accompanying drawings, the present application still allows for continued arbitrary combination or deletion between these technical features (or their equivalents) without any technical obstacles, thereby obtaining more other embodiments of the present application that may not be directly mentioned in this document.

[0038] <Overview>

[0039] In general, referring to the figures, according to exemplary embodiments, a control method of an air conditioning system, an air conditioning system, a server, and a mobile terminal device are shown. Based on the power information including power characteristics, an energy storage instruction for a specific area can be generated, so that the air conditioning system can use power more reasonably and take into account the comfort of the area.

[0040] <Control method>

[0041] According to the air conditioning system in the embodiment of the present application, it includes a plurality of indoor units arranged in different areas. Figure 1 According to the control method of the air-conditioning system in the embodiment of the present application, the method includes: an occupancy information acquisition step, acquiring the occupancy information of the area; an electric energy information acquisition step, acquiring the electric energy information including the electric energy characteristics; and an energy storage instruction generation step, when the electric energy information meets the predetermined energy storage condition, generating an energy storage instruction for a specific area based on the occupancy information.

[0042] Specifically, in the occupancy information acquisition step, the occupancy information of the area is acquired. The area referred to here refers to a relatively independent space that can accept temperature adjustment in a building or similar structure that uses an air-conditioning system, such as a company's warehouse, conference room, independent office, etc. in the building. Occupancy information refers to relevant information on whether the area is occupied and affects the large-scale temperature adjustment. For example, if no one works in the warehouse at ordinary times, it is considered to be unoccupied, and the temperature can be adjusted to below 16°C for a long time. However, if it becomes an independent office with people working for a long time due to space transformation, it is considered to be occupied, and the area cannot be adjusted to a large extent. The amplitude of temperature adjustment is determined according to actual needs and there is no special restriction. Occupancy information is determined based on any of the information on the number of people in the area, pre-stored area usage information, and thermostat setting temperature schedule information.

[0043] By obtaining the occupancy information of the area, it is helpful for the air conditioning system to understand the layout or personnel situation of different areas, so as to understand the sensitivity of different areas to temperature fluctuations and other information. For example, according to the occupancy information, a certain area is an office area or a rest area occupied by people, then it can be inferred that the area is highly sensitive to temperature fluctuations, that is, if the temperature of the area suddenly drops or rises, the people in the area will perceive a decrease in comfort. For example, according to the occupancy information, a certain area is an idle area that is temporarily or long-term unoccupied, then it can be inferred that the area is less sensitive to temperature fluctuations. For another example, according to the occupancy information, a certain area is a control area or a storage area occupied by special machines and equipment, then it can be inferred that the area is highly sensitive to temperature fluctuations, that is, if the temperature of the area suddenly drops or rises, the operating stability of the special machines and equipment in the area will be reduced. The occupancy information is determined based on any of the number of people in the area, the pre-stored area usage information, and the temperature setting schedule information of the thermostat. For example, the acquisition method of the occupancy information of the area can be any of a variety of acquisition methods such as user instructions, sensor detection, and area occupancy schedule.

[0044] Furthermore, in the electric energy information acquisition step, electric energy information including electric energy characteristics is acquired. The electric energy characteristics here refer to relevant information that can reflect the source of electric energy, power grid information, type of electric energy, etc.

[0045] In some embodiments, the electric energy characteristic is a grid carbon emission index. Specifically, the grid carbon emission index can be a value between 1 and 100. The smaller the value, the smaller the grid carbon emission intensity, the cleaner the grid power supply, and the higher the cleanliness of the electric energy; the larger the value, the greater the grid carbon emission intensity, the dirtier the grid power supply, and the lower the cleanliness of the electric energy. In different geographical locations, the grid carbon emission index is different, and the grid carbon emission index of a certain geographical location can be obtained through information such as postal code. The grid carbon emission index is different at different times in the same geographical location. In other words, the grid carbon emission index is a real-time updated value. The grid carbon emission index can be calculated by a calculation model, and the data input into the calculation model may include data such as carbon emissions of each power plant, grid operation, weather, and renewable energy.

[0046] For example, in geographical location A, renewable energy such as wind energy and solar energy is relatively abundant, and the average carbon emission index of the power grid in a month is generally below 50. Therefore, according to the situation of geographical location A, the predetermined energy storage condition can be "the carbon emission index of the power grid is less than or equal to 45". When the acquired electric energy information meets this condition, it is recommended to increase the use of electric energy at this time, that is, the predetermined energy storage condition is met. The predetermined energy storage condition can be determined according to the actual situation of the power grid where the air-conditioning system is located and the building where the air-conditioning system is installed.

[0047] In some embodiments, the power characteristic is the price of available power in the building, or the power characteristic is the proportion of renewable power used in the building, or the power characteristic is any one of the cleanliness of the grid, the proportion of clean power, and the proportion of renewable energy.

[0048] In some embodiments, the electric energy characteristic is the greenhouse gas emission per unit of electric energy, that is, the purpose of obtaining the electric energy information is to reduce the greenhouse gas emission generated by the electricity consumption of the air conditioning system. To achieve the above purpose, it is hoped that the electric energy used by the air conditioning system is obtained more by wind power generation, hydropower generation, solar power generation and other power generation forms, and less by thermal power generation and other power generation forms. However, compared with thermal power generation, the power generation of wind power generation, hydropower generation, solar power generation and other power generation forms is relatively uneven and more dependent on weather conditions. Therefore, by making the electric energy generated by wind power generation, hydropower generation, solar power generation and other power generation forms more sufficient, it can be used more, for example, converted into cold energy / heat energy in the air conditioning system and stored, so that the thermal inertia brought by the stored cold energy / heat energy can be used to reduce the consumption of electric energy by the air conditioning system when the power generation generated by wind power generation, hydropower generation, solar power generation and other power generation forms is small. In the above manner, the total amount of electric energy consumption of the air conditioning system may not be reduced or increased, but the greenhouse gas emissions generated by the electricity consumption of the air conditioning system can be reduced.

[0049] By obtaining power information including power characteristics, the air conditioning system can more reasonably arrange the use time and amount of power according to various purposes. For example, if the purpose is to reduce the electricity cost of the air conditioning system, power information including the price of available power can be obtained; if the purpose is to reduce the carbon emissions of the air conditioning system, power information including any one of the grid carbon emission index, grid cleanliness, clean power ratio, renewable energy ratio, etc. can be obtained. In some embodiments, the power characteristics change over time, and the power information includes the power characteristics at each time point.

[0050] Further, in the energy storage instruction generation step, when the electric energy information meets the predetermined energy storage condition, an energy storage instruction for a specific area is generated based on the occupancy information. When the electric energy information meets the predetermined energy storage condition, that is, after the electric energy information containing the electric energy characteristics is determined, it is considered that the electric energy information meets the recommended electricity usage conditions defined according to the purpose of electricity use (for example, the purpose of reducing electricity costs or the purpose of reducing carbon emissions), that is, increasing the amount of electricity used is recommended at this time, that is, storing energy by increasing the use of electricity is recommended. For example, if the purpose is to reduce the electricity cost of the air-conditioning system, the electric energy information containing the available electricity price can be obtained, where the predetermined energy storage condition can be "the available electricity price is less than or equal to the preset value", and when the obtained electric energy information meets this condition, it is recommended to increase the amount of electricity used, that is, to store energy by increasing the use of electricity. For example, if the purpose is to reduce the carbon emissions of the air-conditioning system, electric energy information including the carbon emission index of the power grid can be obtained. The predetermined energy storage condition here can be "the carbon emission index of the power grid is less than or equal to the preset value or threshold". When the obtained electric energy information meets this condition, it is recommended to increase the electric energy usage, that is, to store energy by increasing the electric energy usage.

[0051] In some embodiments, the electric energy information is historical electric energy information including historical electric energy characteristics. For example, the electric energy information is information of historical grid carbon emission index. For example, in the past month, the grid carbon emission index was about 60 at about 8 o'clock and about 40 at about 7 o'clock. Then, when the threshold is set to 45, the predetermined energy storage condition is "the grid carbon emission index is less than or equal to the preset value or threshold value". When the predetermined energy storage condition is met, an energy storage instruction for a specific area is generated.

[0052] The predetermined energy storage conditions may be further determined based on factors such as electric energy characteristics, the power grid where the air conditioning system is located, and the actual conditions of the building where the air conditioning system is installed.

[0053] By generating energy storage instructions for specific areas based on occupancy information, when the usage of electricity increases and the conversion of electricity to other forms of energy (for example, cold energy / heat energy) increases, the increased energy can be stored in an appropriate manner, such as in an area that is less sensitive to temperature fluctuations, and used when appropriate.

[0054] <Energy storage instruction execution steps>

[0055] In some embodiments, the control method includes: an energy storage instruction execution step, so that the indoor unit of the specific area executes the energy storage instruction. Specifically, the indoor unit includes a thermostat, so that the set temperature of the thermostat of the specific area is changed. Among them, the specific area refers to an area with a low sensitivity to temperature fluctuations, for example, it can be an empty room in a building. By lowering the set temperature of the thermostat of the empty room when the air-conditioning system is in cooling operation, more cold energy can be obtained in the empty room, and the cold energy is stored in the empty room, for example, in the space, wall, and furniture of the empty room, so as to achieve the purpose of storing cold energy. When the air-conditioning system is in heating operation, by increasing the set temperature of the thermostat of the empty room, more heat energy can be obtained in the empty room, and the heat energy is stored in the empty room, for example, in the space, wall, and furniture of the empty room, so as to achieve the purpose of storing heat energy.

[0056] In some embodiments, the set temperature of the thermostat may be adjusted up or down by a specific amount each time the energy storage instruction is executed. In some embodiments, an adjustment up or down amount adapted to the energy information may be generated for the thermostat based on the real-time energy information and / or the historical energy information each time the energy storage instruction is executed.

[0057] There is no restriction on the type of air conditioning system here. It can be a fluorine system air conditioning, a water system air conditioning, a multi-split system, an air-cooled chiller or a water-cooled chiller. It only needs to be able to increase the cooling / heating energy in the vacant room by adjusting the set temperature of the thermostat in the vacant room.

[0058] <Electricity prediction point>

[0059] It should be noted that the electric energy information may also include real-time electric energy information including real-time electric energy characteristics and historical electric energy information including historical electric energy characteristics, so that the predetermined energy storage conditions can be determined more accurately according to the real-time electric energy characteristics. For example, the predetermined energy storage condition may be "the real-time grid carbon emission index is at a low point compared to the grid carbon emission index indicated by the historical grid carbon emission index curve one hour later", and the predetermined energy storage condition may also be "the difference between the real-time grid carbon emission index and the grid carbon emission index indicated by the historical grid carbon emission index curve one hour later is greater than a threshold value".

[0060] In some embodiments, the electric energy information includes real-time electric energy information including real-time electric energy characteristics and historical electric energy information including historical electric energy characteristics. The control method of the air-conditioning system also includes: an electric energy prediction point generating step, generating an electric energy prediction point based on the historical electric energy information; in the energy storage instruction generating step, determining a predetermined energy storage condition based on a comparison result between the electric energy prediction point and the real-time electric energy information.

[0061] By generating electric energy prediction points based on historical electric energy information, it is possible to predict electric energy information after a preset time in the future, and to judge whether the current moment is suitable for generating energy storage instructions based on this. For example, if the purpose is to reduce the carbon emissions of the air-conditioning system, when it is predicted that the carbon emission index of the power grid will increase / significantly increase after a preset time, that is, when it is predicted that the cleanliness of the electric energy will decrease after a preset time, an energy storage instruction can be generated to achieve energy storage at the moment when the current electric energy cleanliness is high, and to reduce electric energy consumption by releasing energy when the cleanliness of the electric energy decreases in the future, thereby achieving the purpose of reducing the carbon emissions of the air-conditioning system. By predicting electric energy information for a preset time in the future, the moment / timing of generating energy storage instructions can be made more appropriate, which is conducive to reducing the carbon emissions of the air-conditioning system and taking into account the comfort of the air-conditioning system.

[0062] In some embodiments, Figure 3 As shown, Figure 3The curve drawn by the dotted line in is the prediction curve formed by fitting the historical power grid carbon emission index, and the solid dots represent the real-time power grid carbon emission index. The real-time power grid carbon emission index at 1 o'clock is a. According to the prediction curve, the power grid carbon emission index after 1 hour can be predicted, that is, the power prediction point a'. When a' is greater than a, and the difference between a' and a is greater than the set value, it means that the power cleanliness at 1 o'clock is high, and the power cleanliness at 2 o'clock will be significantly reduced. Therefore, it is judged that the current time (1 o'clock) is suitable for generating energy storage instructions. The specific content of the energy storage instruction can be that the set temperature of the thermostat is reduced by 3°C during refrigeration operation. The real-time power grid carbon emission index at 2 o'clock is b. The same judgment method as described above can be used to judge that the current time (2 o'clock) is also suitable for generating energy storage instructions. The real-time power grid carbon emission index at 3 o'clock is c. It is predicted that the power cleanliness will be slightly reduced after 1 hour, but the degree of reduction is not obvious. Therefore, it is judged that the current time (3 o'clock) is not suitable for generating energy storage instructions, and energy release instructions can be generated at this time. The real-time grid carbon emission index at 5 o'clock is d. According to the prediction curve, the grid carbon emission index after 1 hour, i.e., the electric energy prediction point d', and the grid carbon emission index after 2 hours, i.e., the electric energy prediction point d", can be predicted. By comparing the three, it is shown that the electric energy cleanliness at 5 o'clock is relatively high, and the electric energy cleanliness will continue to decrease thereafter. Therefore, it is judged that the current time (5 o'clock) is suitable for generating energy storage instructions. The specific content of the energy storage instruction can be to reduce the set temperature of the thermostat by 5°C during cooling operation.

[0063] In some embodiments, the grid carbon emission index for a period of time in the future (e.g., 8 hours) can be predicted, for example, by generating multiple electricity prediction points to predict the trend, so that it can be determined whether energy storage instructions need to be generated by comparing the real-time and future grid carbon emission indexes.

[0064] <Energy release instruction generation steps>

[0065] In some embodiments, it also includes: an energy release instruction generation step, when a predetermined energy release condition is met, an energy release instruction is generated. The predetermined energy release condition includes at least one of the temperature of a specific area reaching a specified value, responding to an input, the occupancy information of a specific area changes, and the execution time of the energy storage instruction reaches a specified value. By generating an energy release instruction, the cold energy / heat energy stored in the air-conditioning system can be released when needed or when appropriate, or in other words, the cold energy / heat energy stored in the air-conditioning system can be better released, thereby improving the utilization efficiency of the stored cold energy / heat energy.

[0066] <Air conditioning system with fan coil unit>

[0067] In some embodiments, the air conditioning system 1 is Figure 4As shown, the air conditioning system 1 includes: an air supply duct 102 connected to the external fresh air, a fresh air unit (103, 106), indoor units (1011, 1012, 1013, 1014) corresponding to different areas, an exhaust air duct 104, and a heat recovery heat exchanger 105 for exhaust air / fresh air energy recovery. The fresh air unit (103, 106) includes a fresh air hot coil 1031, a fresh air cold coil 1032, and a fresh air fan 106 located in the air supply duct 102. The indoor unit (1011, 1012, 1013, 1014) includes a thermostat 1011, a fan coil 1012, an air supply port 1013 connected to the air supply duct 102, and an exhaust port 1014 connected to the exhaust air duct 104. The fan coil unit 1012 includes a fan 10121, a hot coil unit 10122, and a cold coil unit 10123. External fresh air enters the air supply duct 102 through the heat recovery heat exchanger 105, passes through the fresh air coil unit 103, and is sent to different areas through the air supply port 1013. The air in the area enters the exhaust duct 104 through the exhaust port 1014. The air entering the exhaust duct 104 is pre-processed by the heat recovery heat exchanger 105 and then discharged outdoors. Each area is also arranged with a fan coil unit 1012. By allowing the air in the area to pass through the fan coil unit 1012 before being blown out, the cold energy or heat energy of the blown air can be increased, thereby adjusting the temperature in the area.

[0068] The air conditioning system 1 can be operated in cooling mode and in heating mode. The air conditioning system 1 in cooling mode will be described below as an example. It can be understood that similar control methods and control logic can also be applied to heating mode.

[0069] The air conditioning system 1 starts cooling operation. In the normal operation mode, the set temperature of the thermostat 1011 in the unoccupied area A is T(A), the set temperature of the thermostat 1011 in the occupied area B1 is T(B1), and the set temperature of the thermostat 1011 in the occupied area B2 is T(B2). T(A)>T(B1) and T(A)>T(B2), that is, the set temperature of the thermostat 1011 in the unoccupied area A is higher, so that the fan coil 1012 corresponding to the unoccupied area A remains in the off state. At this time, in the occupied areas B1 and B2, the fan coil 1012 is adjusted by changing the operating speed of the fan 10121 of the fan coil 1012, or adjusting the compressor speed to change the temperature of the working fluid in the hot coil 10122 or the cold coil 10123 of the fan coil 1012, so as to maintain the indoor set temperature in the occupied areas B1 and B2. At this time, the set temperature of the fresh air unit (103, 106) can be the average value of the indoor set temperatures in multiple areas. The air in each area enters the exhaust duct 104 through the exhaust port 1014, and the air entering the exhaust duct 104 is pre-processed by the heat recovery heat exchanger 105 to reduce the temperature of the external fresh air. The external fresh air passes through the fresh air cooling coil 1032 to further reduce its temperature to the set temperature of the fresh air unit, and is sent into different areas through the fresh air fan 106.

[0070] When the electric energy information meets the predetermined energy storage conditions, that is, the current power grid is clean, and it is predicted that the carbon emission index of the power grid will increase significantly after a preset time in the future, that is, the power grid will become dirty, then an energy storage instruction is generated for the unoccupied area A, and the air conditioning system 1 switches to the energy storage operation mode. In the energy storage operation mode, the power consumption of the air conditioning system 1 will increase significantly, in order to obtain more cold energy and store the cold energy in the unoccupied area A. In the energy storage operation mode, the indoor unit of the unoccupied area A executes the energy storage instruction, and the set temperature T(A) of the thermostat 1011 is reduced to meet T(A)<T(B1) and T(A)<T(B2), so that the fan coil 1012 corresponding to the unoccupied area A runs at a high speed. In this way, the unoccupied area A can obtain more cold energy, so as to reduce the temperature of the air in the unoccupied area A and the temperature of the wall structure and furniture structure therein, so as to achieve the purpose of storing cold energy. In the energy storage operation mode, the set temperature of the thermostat 1011 in the occupied areas B1 and B2 remains unchanged, and the operation status of the fresh air units (103, 106) remains the same as the normal operation mode.

[0071] When the electric energy information does not meet the predetermined energy storage conditions, that is, the current grid carbon emission index increases significantly, it is considered that the predetermined energy release conditions are met, and an energy release instruction is generated to enter the energy release operation mode. The predetermined energy release conditions include at least any of the temperature of a specific area reaching a specified value, responding to an input, the occupancy information of a specific area changes, and the execution time of the energy storage instruction reaches a specified value. In the energy release operation mode, the electric energy consumption of the air-conditioning system 1 will be significantly reduced, and the cold energy stored in the unoccupied area A will be used as much as possible to meet the indoor set temperature in the occupied areas B1 and B2. In the energy release operation mode, the set temperature of the thermostat 1011 of the occupied areas B1 and B2 remains unchanged, and the indoor set temperature is still met by adjusting the operation of the fan coil 1012. In the energy release operation mode, the set temperature T(A) of the thermostat 1011 of the unoccupied area A is increased to meet T(A)>T(B1) and T(A)>T(B2), and the fan coil 1012 is turned off. The cold energy stored in the unoccupied area A, i.e., the cold air, will enter the fresh air unit (103, 106) after being pre-processed by the exhaust duct 104 and the heat recovery heat exchanger 105. In the heat recovery heat exchanger, since the temperature of the air returned from the unoccupied area A is relatively low, the temperature of the external fresh air can be significantly reduced, so that the temperature of the air sent to the fresh air unit (103, 106) can be reduced, thereby reducing the operating load of the fresh air coil, and further reducing the operating time or operating frequency of the compressor on the working fluid side of the fresh air cooling coil 1032, so that the power consumption can be significantly reduced.

[0072] In some embodiments, when the power information does not meet the predetermined energy storage condition, no energy release instruction is intentionally generated, that is, no energy storage instruction is generated, and no energy release instruction is generated. It can be understood that when the indoor units of each area are adjusted according to normal conditions, the cold energy / heat energy stored in a specific area can enter the air-conditioning system to affect the power consumption of the air-conditioning system.

[0073] <Variable Air Volume Air Conditioning System>

[0074] In some embodiments, the air conditioning system 2 is Figure 5As shown, the air conditioning system 2 includes: an air supply duct 202 connected to the external fresh air, a central air conditioning unit (203, 206), indoor units (2011, 2012, 2013, 2014, 2015) corresponding to different areas, an exhaust duct 204, and a return air duct 205 connecting the air supply duct 202 and the exhaust duct 204. The central air conditioning unit (203, 206) includes a central air conditioning hot coil 2031, a central air conditioning cold coil 2032, and an air supply fan 206 located in the air supply duct 202. The indoor unit (2011, 2012, 2013, 2014, 2015) includes a thermostat 2011, a damper 2012, a reheat coil 2015, an air supply port 2013 connected to the air supply duct 202, and an exhaust port 2014 connected to the exhaust duct 204. After entering the air supply duct 202, the fresh air passes through the fresh air coil 203, passes through the air valve 2012, and is sent to different areas from the air supply port 2013. The indoor set temperature in the area is adjusted by adjusting the opening of the air valve 2012. The air in the area enters the exhaust duct 204 through the exhaust port 2014. Part of the air entering the exhaust duct 204 enters the air supply duct 202 through the return air duct 205, and part is discharged to the outside.

[0075] The air conditioning system 2 can perform cooling operation and heating operation. The following description will take the air conditioning system 2 in cooling operation as an example. It can be understood that similar control methods and control logic can also be applied to heating operation.

[0076] The air conditioning system 2 starts cooling operation. In the normal operation mode, the set temperature of the thermostat 2011 in the unoccupied area A is T(A), the set temperature of the thermostat 2011 in the occupied area B1 is T(B1), and the set temperature of the thermostat 2011 in the occupied area B2 is T(B2). T(A)>T(B1) and T(A)>T(B2), that is, the set temperature of the thermostat 2011 in the unoccupied area A is higher, so that the air valve 2012 corresponding to the unoccupied area A maintains the minimum opening ( Figure 5 2 is a schematic diagram of the maximum opening of the air valve 2012 corresponding to area A). At this time, in the occupied areas B1 and B2, the opening of the air valve 2012 is adjusted to meet the indoor set temperature in the occupied areas B1 and B2. At this time, the air in the occupied areas B1 and B2 enters the exhaust duct 204 through the exhaust port 2014, and part of the air entering the exhaust duct 204 is discharged to the outside, and part of the air is mixed with the external fresh air through the return air duct 205 and then enters the supply air duct 202. The working fluid side of the cold coil 2032 of the central air conditioning unit can meet the set temperature of the central air conditioning unit by switching the compressor or adjusting the compressor speed.

[0077] When the electric energy information meets the predetermined energy storage conditions, that is, the current power grid is clean, and it is predicted that the carbon emission index of the power grid will increase significantly after a preset period of time in the future, that is, the power grid will become dirty, then an energy storage instruction is generated for the unoccupied area A, and the air conditioning system 2 switches to the energy storage operation mode. In the energy storage operation mode, the power consumption of the air conditioning system 2 will increase significantly, in order to obtain more cold energy and store the cold energy in the unoccupied area A. In the energy storage operation mode, the indoor units in the unoccupied area A execute the energy storage instruction, and the set temperature T(A) of the thermostat 2011 is reduced to satisfy T(A)<T(B1) and T(A) is less than T(B2), thereby increasing the opening of the air valve 2012 corresponding to the unoccupied area A, or adjusting the air valve 2012 to the maximum opening ( Figure 5 , which is a schematic diagram of the maximum opening of the air valve 2012 corresponding to area A). In this way, the unoccupied area A can obtain more cold energy to reduce the temperature of the air in the unoccupied area A, as well as the temperature of the wall structure and furniture structure therein, so as to achieve the purpose of storing cold energy. In the energy storage operation mode, the set temperature of the thermostat 2011 in the occupied areas B1 and B2 remains unchanged, and the indoor set temperature is met by adjusting the opening of the air valve 2012. In the energy storage operation mode, the set temperature of the central air-conditioning unit can be lowered, and the speed of the air supply fan 206 can be adjusted to increase the air supply volume, so that the proportion of the operating time of the compressor on the working fluid side of the central air-conditioning cold coil 2032 is increased or the speed is increased, so that in the energy storage operation mode, the power consumption of the compressor and the air supply fan 206 will increase.

[0078] When the electric energy information does not meet the predetermined energy storage conditions, that is, the current grid carbon emission index increases significantly, it is considered that the predetermined energy release conditions are met, and an energy release instruction is generated to enter the energy release operation mode. The predetermined energy release conditions include at least the temperature of a specific area reaching a specified value, responding to an input, the occupancy information of a specific area changes, and the execution time of the energy storage instruction reaches a specified value. In the energy release operation mode, the electric energy consumption of the air conditioning system 2 will be significantly reduced, and the cold energy stored in the unoccupied area A will be used as much as possible to meet the indoor set temperature in the occupied areas B1 and B2. In the energy release operation mode, the set temperature of the thermostat 2011 in the occupied areas B1 and B2 remains unchanged, and the indoor set temperature is still met by adjusting the opening of the air valve 2012. In the energy release operation mode, the set temperature T(A) of the thermostat 2011 in the unoccupied area A is increased to meet T(A)>T(B1) and T(A)>T(B2), and the air valve 2012 can be adjusted to the maximum opening through the central controller to promote the air flow in the unoccupied area A and heat exchange with the wall and other structures of the unoccupied area A. The cold energy stored in the unoccupied area A, that is, the cold air, will return to the central air conditioning unit (203, 206) through the exhaust duct 204 and the return air duct 205. In the central air conditioning unit (203, 206), the set temperature of the fresh air unit can be appropriately increased. Since the temperature of the air returned from the unoccupied area A is relatively low, the air temperature at the inlet of the central air conditioning cold coil 2032 can be effectively reduced, thereby reducing the operating load of the central air conditioning cold coil 2032, and then reducing the operating time or operating frequency of the compressor on the working fluid side of the central air conditioning cold coil 2032, so that the power consumption can be significantly reduced.

[0079] <Computer-readable storage medium>

[0080] According to the computer-readable storage medium in the embodiments of the present application, a control program is stored, and when the control program is executed by the processor, the control method of the air-conditioning system introduced in some of the above embodiments is implemented.

[0081] <Mobile terminal equipment>

[0082] According to the mobile terminal device 30 in the embodiment of the present application, Figure 6 As shown, it includes: a processor 31 and a memory 32, the memory 32 stores processor-readable instructions, and the processor 31 executes the control method of the air-conditioning system introduced in some of the above embodiments by running the processor-readable instructions.

[0083] <Server>

[0084] According to the server 40 in the embodiment of the present application, Figure 7As shown, it includes: a processor 41 and a memory 42, the memory 42 stores processor-readable instructions, and the processor 41 executes the control method of the air-conditioning system introduced in some embodiments above by running the processor-readable instructions.

[0085] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A control method for an air conditioning system, wherein the air conditioning system comprises a plurality of indoor units arranged in different areas, characterized in that: The control method comprises: An occupancy information acquisition step, acquiring occupancy information of an area; An electric energy information acquisition step, acquiring electric energy information including electric energy characteristics; The energy storage instruction generating step is to generate an energy storage instruction for a specific area based on the occupancy information when the electric energy information meets the predetermined energy storage condition.

2. The control method of the air conditioning system according to claim 1, characterized in that: The electric energy characteristic is any one of a grid carbon emission index, a grid cleanliness, a clean electric energy ratio, and a renewable energy ratio.

3. The control method of the air conditioning system according to claim 1, characterized in that: The electrical energy characteristic varies with time.

4. The control method of the air conditioning system according to claim 1, characterized in that: Also includes: The energy storage instruction execution step enables the indoor units arranged in the specific area to execute the energy storage instruction.

5. The control method of the air conditioning system according to claim 4, characterized in that: The indoor unit includes a thermostat, Enabling the indoor units arranged in the specific area to execute the energy storage instruction specifically includes: adjusting the set temperature of the thermostat of the specific area.

6. The control method of the air conditioning system according to claim 5, characterized in that: The indoor unit also includes a fan coil unit or an air valve. Causing the indoor units arranged in a specific area to execute the energy storage instruction specifically includes: changing the wind speed of the fan coil unit in the specific area, or changing the opening of the air valve in the specific area, or performing any of the above actions in response to input from the thermostat in the specific area.

7. The control method of the air conditioning system according to claim 1, characterized in that: The electric energy information is historical electric energy information including historical electric energy characteristics, In the energy storage instruction generation step, the predetermined energy storage condition is determined based on a comparison result between a historical electric energy characteristic and a threshold value.

8. The control method of the air conditioning system according to claim 1, characterized in that: The electric energy information includes real-time electric energy information including real-time electric energy characteristics and historical electric energy information including historical electric energy characteristics. The control method further comprises: An electric energy prediction point generating step is to generate an electric energy prediction point based on the historical electric energy information; In the energy storage instruction generation step, the predetermined energy storage condition is determined based on a comparison result between the electric energy prediction point and the real-time electric energy information.

9. The control method of the air conditioning system according to claim 1, characterized in that: The occupancy information is determined based on any one of information on the number of people in the area, pre-stored area usage information, and thermostat set temperature schedule information.

10. The control method of the air conditioning system according to any one of claims 1 to 9, characterized in that: Also includes: The energy release instruction generating step generates an energy release instruction when a predetermined energy release condition is met.

11. The control method of the air conditioning system according to claim 10, characterized in that: The predetermined energy release condition includes at least one of the temperature of the specific area reaching a specified value, responding to an input, the occupancy information of the specific area changing, and the execution time of the energy storage instruction reaching a specified value.

12. An air conditioning system, characterized in that: include: A plurality of indoor units arranged in different areas, wherein the indoor units include air supply ports and air exhaust ports; An air supply duct, connecting the plurality of air supply outlets arranged in different areas; An exhaust duct, connected to the plurality of exhaust ports arranged in different areas, and the exhaust duct is connected to the air supply duct; The air conditioning system executes the control method of the air conditioning system according to any one of claims 1 to 11.

13. A computer-readable storage medium storing a control program, characterized in that: When the control program is executed by a processor, the control method of the air conditioning system according to any one of claims 1 to 11 is implemented.

14. A mobile terminal device, characterized in that: include: A processor and a memory, wherein the memory stores processor-readable instructions, and the processor executes the control method of the air-conditioning system according to any one of claims 1 to 11 by running the processor-readable instructions.

15. A server, characterized in that: include: A processor and a memory, wherein the memory stores processor-readable instructions, and the processor executes the control method of the air-conditioning system according to any one of claims 1 to 11 by running the processor-readable instructions.

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