System and method for achieving spatially diverse thermal environments based on a single air conditioner

Abstract

The application provides a system and method for realizing space diversification of thermal environment based on a single air conditioner, and relates to the technical field of indoor environment regulation, comprising: a positioning module for determining the corresponding relationship between air supply outlets and control areas and inputting the space coordinates of each control area; a calculation module for calculating the initial value of the air supply parameter of each air supply outlet according to the space coordinates in the positioning module and the thermal demand of personnel; an adjustment module for obtaining the initial value of the air supply parameter, making each air supply outlet of the air conditioner start air supply to the control area with the initial value of the air supply parameter, and adjusting the air supply parameter in real time according to the difference between the feedback value and the target value of the control area; and a mixed air module for obtaining the air supply parameter of each air supply outlet in the adjustment module and adjusting the return air ratio of each air supply outlet according to the air supply parameter. The application can realize the purpose of creating different thermal environments in different areas of the same room by using a single air conditioner, and meet the thermal demand of different personnel in the shared space.

Description

Technical Field

[0001] This invention relates to the field of indoor environmental control technology, specifically to a system and method for achieving diverse thermal environments in a space based on a single air conditioner. Background Technology

[0002] Different people have different thermal comfort needs. As the quality of life improves, people are gradually no longer satisfied with a single indoor thermal environment. Personalized thermal comfort and the creation of diversified thermal environments have become popular directions in the air conditioning industry.

[0003] Chinese patent application CN113932351B discloses a real-time control system and method for non-uniform temperature fields based on artificial intelligence algorithms. By combining artificial intelligence algorithms with CFD technology, it provides a method for controlling indoor non-uniform temperature fields in large air conditioning systems. This patent is primarily based on large air conditioning systems and is geared towards non-residential environments with large indoor spaces and significant differences in heating and cooling loads.

[0004] Patent CN114110778B discloses a wall-mounted air conditioner and its control method. It achieves zoned air conditioning control by using two sets of centrifugal fans inside the air conditioner and setting two radial air outlets in opposite directions for each fan. However, this invention achieves zoned control by changing the on / off state of different air outlets on the air conditioner, and cannot provide different airflow parameters such as temperature and wind speed according to the thermal comfort needs of different areas. This invention only addresses improvements to wall-mounted air conditioners and cannot be combined with other air conditioning systems, including wall-mounted air conditioners.

[0005] Chinese patent application CN114322253A discloses a method and apparatus for controlling an air conditioner, an air conditioner, and a storage medium. It provides a method for temperature-differentiated air delivery by adjusting the refrigerant flow rate on different sides of the air conditioner. The core of this patent's method for simultaneously delivering air at two temperatures relies on controlling the refrigerant flow rate inside the air conditioner; it cannot adjust the mixing ratio of airflows at different temperatures inside the air conditioner. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a system and method for achieving diverse spatial thermal environments based on a single air conditioner.

[0007] According to the present invention, a system and method for achieving diverse spatial thermal environments based on a single air conditioner are provided, the solution of which is as follows:

[0008] In a first aspect, a system for achieving diverse thermal environments in a space based on a single air conditioner is provided, the system comprising:

[0009] Positioning module: Determines the correspondence between air outlets and control areas, and inputs the spatial coordinates of each control area;

[0010] Calculation module: Calculates the initial values ​​of the air supply parameters for each air outlet based on personnel needs and the spatial coordinates in the positioning module;

[0011] Adjustment module: acquires the initial value of the air supply parameter, enables each air outlet of the air conditioner to start supplying air to the control area with the initial value of the air supply parameter, and adjusts the air supply parameter in real time according to the difference between the feedback value of the control area and the target value;

[0012] Mixing air module: Obtains the supply air parameters of each air outlet in the adjustment module, and adjusts the return air ratio of each air outlet according to the supply air parameters.

[0013] Preferably, the indoor unit of the air conditioner is designed with two or more air outlets, each air outlet having horizontal and vertical louvers to adjust the air supply direction.

[0014] Preferably, each air outlet is provided with an independent air supply duct, which is connected to three air ducts. The first air duct supplies cooling air or heating air that has been treated by the air conditioning heat exchanger, the second air duct supplies indoor return air that does not pass through the air conditioning heat exchanger, and the third air duct supplies air that exchanges heat with the outside or outdoor fresh air.

[0015] Each duct is equipped with a valve to regulate the flow rate. Since the airflow temperatures of the three ducts are different, the mixing ratio of the three airflows is adjusted by the valves to obtain airflows with different temperatures.

[0016] Preferably, a temperature sensor and a wind speed sensor are provided in each control area of ​​the air conditioner, and temperature and wind speed sensors are provided at the equipment return air duct, the heat exchanger outlet air duct, and each air outlet.

[0017] Secondly, a method for achieving diverse thermal environments in a space based on a single air conditioner is provided, the method comprising:

[0018] Step S1: Divide the target area of ​​indoor air conditioning into multiple control areas, with each air outlet corresponding to a control area, and input the correspondence and the relative spatial relationship between the air outlet and the control area into the positioning module in coordinate form;

[0019] Step S2: Obtain the target air temperature and target air velocity of each pre-set control area. After obtaining the target air temperature and target air velocity of the control area, calculate the initial value of the air supply parameters of each air outlet according to the jet law and the spatial coordinates in the positioning module.

[0020] Step S3: Obtain the initial values ​​of the air supply parameters, adjust the horizontal and vertical louvers of each air supply outlet and the valves of each air duct, so that each air supply outlet of the air conditioner starts to supply air to the control area with the initial values ​​of the air supply parameters;

[0021] Based on the feedback values ​​from each sensor, the difference between the air supply parameters and the calculated parameters of each air outlet is monitored in real time, as well as the difference between the monitored values ​​and the target values ​​in the control area, and the air supply parameters are adjusted in real time.

[0022] Step S4: Obtain the air supply parameters of each air outlet from the previous step, and adjust the valves of each air duct in the air conditioner to obtain air supply airflow with different parameters.

[0023] Preferably, the coordinates in step S1 include: the direction, height difference, and horizontal distance of each control area relative to the air conditioning vent.

[0024] Preferably, obtaining the target air temperature and target air velocity for each control area in step S2 includes:

[0025] Parameters can be directly input by users;

[0026] Alternatively, it can be obtained through machine learning based on the correspondence between the user's temperature adjustment habits and detectable physiological parameters;

[0027] Alternatively, it can be obtained by combining it with other terminal devices that have human thermal comfort monitoring functions.

[0028] Preferably, the initial values ​​of the air supply parameters in step S2 include: air supply angle, air supply speed, and air supply temperature;

[0029] The calculation of initial values ​​for air supply parameters includes:

[0030] Air supply angle: The air supply angle includes two angles adjusted by horizontal and vertical louvers. The vertical louver adjustment angle is directly determined by the spatial position of the control area. The angle β between the air supply direction of the horizontal louvers and the horizontal direction is affected by the non-isothermal jet trajectory offset.

[0031]

[0032] Where Ar is the Archimedes number, which characterizes the dimensionless ratio of buoyancy and inertial force, and is related to the supply air temperature, ambient temperature, supply air velocity, and vent characteristics; h and γ represent the height difference and horizontal distance of the coordinates, respectively, obtained by the positioning module; a is the dimensionless turbulence coefficient; d0 is the hydraulic diameter of the air outlet; β represents the angle between the supply air direction of the horizontal louver and the horizontal direction.

[0033] Air supply velocity: According to the jet flow law, the air velocity reaching the control area, i.e., the target wind speed u, is related to the air supply velocity v.

[0034]

[0035] Supply air temperature: Adjusted in real time by the regulating module based on the detected value.

[0036] Preferably, the adjustment of the air supply temperature includes: an initial state, an adjustment state, and a stable state;

[0037] Under summer cooling conditions, assuming the first air outlet corresponds to the first control area and the second air outlet corresponds to the second control area, and the target temperature T1 < T2, the monitored temperature values ​​of the control areas are T1 and T2, respectively. 1t T 2t ;

[0038] Initial state: The two air outlets supply air at the same temperature to cool the overall environment. When the temperature of the two control zones approaches the requirement of the control zone with the higher target temperature, i.e., T2, the system enters the adjustment state.

[0039] Adjustment status: The first air outlet maintains low-temperature air supply, continuing to reduce the temperature of the first control zone; the second air outlet increases the air supply temperature, and the difference between the monitored value and the target value ΔT2=T is monitored in real time. 2t -T2, after stabilizing the temperature of the controlled area near the target temperature, maintain the air supply parameters, and enter a stable state when the first controlled area approaches the target temperature T1;

[0040] Steady state: Real-time monitoring of ΔT2 = T 2t -T2 and ΔT1=T 1t -T1 simultaneously adjusts the air supply temperature of both air outlets, ensuring that the air supply parameters stabilize after both control zones reach the target temperature.

[0041] Preferably, step S4 includes:

[0042] Compare the target temperatures T1 and T2 of the first and second control regions;

[0043] In cooling mode, the return air inside the air conditioner becomes cooling air after heat exchange to meet the air supply of the control area with a lower target temperature; for the air supply of the control area with a higher target temperature, the cooling air and the indoor return air that has not passed through the heat exchanger are mixed. Thus, each air outlet delivers airflow with different temperatures according to the different mixing ratios; when the target temperature of the control area with a higher temperature is higher than the temperature that can be achieved by using only indoor return air, the high-temperature outdoor air is used to supplement the reheat.

[0044] In heating mode, the return air inside the air conditioner undergoes heat exchange to become hot air to meet the supply air of the control area with a higher target temperature; for the supply air of the control area with a lower target temperature, hot air and indoor return air that has not undergone heat exchange are mixed, so that each air outlet delivers airflow with different temperatures; when the target temperature of the control area with a lower temperature is lower than the temperature that can be achieved by using only indoor return air, outdoor low-temperature air is used to supplement the cooling.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. By using different air outlets for independent air supply, the environmental parameters of different target areas can be independently controlled, which can meet the thermal needs of different people in the same space. When the needs of people are the same, the indoor temperature field can be more uniform, avoiding the energy waste caused by creating a uniform environment in a room with low occupancy, as well as the discomfort and energy waste caused by excessive cooling or heating when the needs of people are not high.

[0047] 2. By utilizing the mixed regulation method of indoor return air and air conditioning heat exchange air, it can be combined with existing common air conditioners or air conditioning systems to achieve the goal of obtaining different air supply parameters using one air conditioner or one terminal, thus meeting the need to create different thermal environments in a room using one air conditioner.

[0048] Other beneficial effects of the present invention will be explained in detail through the introduction of specific technical features and technical solutions in specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by these technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0049] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0050] Figure 1 To create an overall process flowchart;

[0051] Figure 2 Example diagram for application scenario 1;

[0052] Figure 3 Example diagram for application scenario 1;

[0053] Figure 4 Example diagram for application scenario two;

[0054] Figure 5 Example diagram for application scenario two;

[0055] Figure 6 This is a schematic diagram illustrating the method for obtaining airflow at different temperatures in the mixing module. Detailed Implementation

[0056] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0057] This invention provides a system for achieving diverse thermal environments in a space based on a single air conditioner. The air conditioner has two or more air vents, and the airflow parameters of each vent can be independently adjusted. Specifically, the system includes:

[0058] Positioning module: Determines the correspondence between air outlets and control areas, and inputs the spatial coordinates of each control area;

[0059] Calculation module: Calculates the initial values ​​of the air supply parameters for each air outlet based on personnel needs and the spatial coordinates in the positioning module;

[0060] Adjustment module: acquires the initial value of the air supply parameter, enables each air outlet of the air conditioner to start supplying air to the control area with the initial value of the air supply parameter, and adjusts the air supply parameter in real time according to the difference between the feedback value of the control area and the target value;

[0061] Mixing air module: Obtains the supply air parameters of each air outlet in the adjustment module, and adjusts the return air ratio of each air outlet according to the supply air parameters.

[0062] Specifically, the indoor unit of the air conditioner is designed with two or more air outlets, each with horizontal and vertical louvers to adjust the airflow direction.

[0063] Each air outlet is equipped with an independent air supply duct, which is connected to three other ducts. The first duct supplies cooling or heating air that has been treated by the air conditioning heat exchanger. The second duct supplies indoor return air that does not pass through the air conditioning heat exchanger. The third duct supplies air that exchanges heat with the outside air or outdoor fresh air. Each duct is equipped with a valve to regulate the flow rate. Since the airflow from the three ducts has a different temperature, the mixing ratio of the three airflows is adjusted by the valve to obtain airflows with different temperatures.

[0064] Temperature and wind speed sensors are installed in each control area of ​​the air conditioner, and temperature and wind speed sensors are installed at the return air duct, the heat exchanger outlet duct, and each air outlet.

[0065] This invention also provides a method for achieving diverse thermal environments in a space based on a single air conditioner, referring to... Figure 1 As shown, the method specifically includes:

[0066] Step S1: Divide the target area of ​​indoor air conditioning into multiple control zones, with each air outlet corresponding to a control zone, and input the correspondence and the relative spatial relationship between the air outlet and the control zone into the positioning module in coordinate form.

[0067] The coordinates include: the direction, height difference, and horizontal distance of each control area relative to the air conditioning vent.

[0068] Step S2: Obtain the target air temperature and target air velocity of each pre-set control area. After obtaining the target air temperature and target air velocity of the control area, calculate the initial value of the air supply parameters of each air outlet according to the jet law and the spatial coordinates in the positioning module.

[0069] The target air temperature and target air velocity for each control zone are obtained by: directly inputting parameters by personnel; or by machine learning based on the correspondence between the user's temperature adjustment habits and detectable physiological parameters; or by combining with other end devices with human thermal comfort monitoring functions.

[0070] Initial values ​​for air supply parameters include: air supply angle, air supply velocity, and air supply temperature; calculation of initial values ​​for air supply parameters includes:

[0071] Air supply angle: The air supply angle includes two angles adjusted by horizontal and vertical louvers. The vertical louver adjustment angle is directly determined by the spatial position of the control area. The angle β between the air supply direction of the horizontal louvers and the horizontal direction is affected by the non-isothermal jet trajectory offset.

[0072]

[0073] Where Ar is the Archimedes number, used to characterize the dimensionless ratio of buoyancy and inertial force, and is related to the supply air temperature, ambient temperature, supply air velocity, and vent characteristics; h and γ represent the height difference and horizontal distance of the coordinates, respectively, obtained by the positioning module; a is the dimensionless turbulence coefficient, which is related to the vent type and can be obtained from laboratory studies or relevant research manuals; the value for a movable louvered vent is 0.16; d0 is the hydraulic diameter of the supply air vent, which can be approximately calculated as... (Where, l is the length of the square air vent, and w is the width of the air vent); β represents the angle between the air supply direction of the horizontal louver and the horizontal direction.

[0074] Air supply velocity: According to the jet flow law, the air velocity reaching the control area, i.e., the target wind speed u, is related to the air supply velocity v.

[0075]

[0076] Supply air temperature: Adjusted in real time by the regulating module based on the detected value.

[0077] The adjustment of supply air temperature includes: initial state, adjustment state and stable state;

[0078] Under summer cooling conditions, assuming the first air outlet corresponds to the first control area and the second air outlet corresponds to the second control area, and the target temperature T1 < T2, the monitored temperature values ​​of the control areas are T1 and T2, respectively. 1t T 2t ;

[0079] Initial state: The two air outlets supply air at the same temperature to cool the overall environment. When the temperature of the two control zones approaches the requirement of the control zone with the higher target temperature, i.e., T2, the system enters the adjustment state.

[0080] Adjustment status: The first air outlet maintains low-temperature air supply, continuing to reduce the temperature of the first control zone; the second air outlet increases the air supply temperature, and the difference between the monitored value and the target value ΔT2=T is monitored in real time. 2t -T2, after stabilizing the temperature of the controlled area near the target temperature, maintain the air supply parameters, and enter a stable state when the first controlled area approaches the target temperature T1;

[0081] Steady state: Real-time monitoring of ΔT2 = T 2t -T2 and ΔT1=T 1t -T1 simultaneously adjusts the air supply temperature of both air outlets, ensuring that the air supply parameters stabilize after both control zones reach the target temperature.

[0082] Step S3: Obtain the initial values ​​of the air supply parameters, adjust the horizontal and vertical louvers of each air supply outlet and the valves of each air duct, so that each air supply outlet of the air conditioner starts to supply air to the control area with the initial values ​​of the air supply parameters;

[0083] Based on the feedback values ​​from each sensor, the difference between the air supply parameters and the calculated parameters at each air outlet is monitored in real time, as well as the difference between the monitored values ​​and the target values ​​in the control area, and the air supply parameters are adjusted in real time.

[0084] Step S4: Obtain the air supply parameters of each air outlet from the previous step, and adjust the valves of each air duct in the air conditioner to obtain air supply airflow with different parameters.

[0085] Comparing the target temperatures T1 and T2 of the first and second control regions, as assumed above, the target temperature T1 < T2 of the two control regions. In this case, the control region with the lower target temperature is the first control region corresponding to T1, and the control region with the higher temperature is similar.

[0086] In cooling mode, the return air inside the air conditioner becomes cooling air after heat exchange, which meets the air supply needs of the control area with a lower target temperature. For the air supply to the control area with a higher target temperature, the cooling air and the indoor return air that has not passed through the heat exchanger are mixed. Thus, each air outlet delivers airflow with a different temperature according to the different mixing ratio. When the target temperature of the control area with a higher temperature is higher than the temperature that can be achieved by using only indoor return air, outdoor high-temperature air is used to supplement reheat.

[0087] In heating mode, the return air inside the air conditioner becomes hot air after heat exchange, which meets the air supply needs of the control area with a higher target temperature. For the air supply to the control area with a lower target temperature, the hot air and the indoor return air that has not undergone heat exchange are mixed, so that each air outlet delivers airflow with different temperatures. When the target temperature of the control area with a lower temperature is lower than the temperature that can be achieved by using only indoor return air, outdoor low-temperature air is used to supplement the cooling.

[0088] The present invention will now be described in more detail.

[0089] This invention provides a system for achieving diverse spatial thermal environments based on a single air conditioner, comprising:

[0090] The positioning module divides the target area of ​​indoor air conditioning into two or more control zones, with each air outlet corresponding to a control zone. The correspondence and the relative spatial relationship between the air outlet and the control zone are input into the positioning module in coordinate form. The coordinates include the direction, height difference, and horizontal distance of each control zone relative to the air conditioning outlet.

[0091] The calculation module pre-sets the target air temperature and target air velocity for each control area. The target air temperature and target air velocity that meet the thermal comfort requirements of users can be obtained by one of the following methods: users directly inputting parameters; or obtaining them through machine learning based on the correspondence between the user's temperature adjustment habits and detectable physiological parameters; or obtaining them by combining with other terminal devices with human thermal comfort monitoring functions.

[0092] After obtaining the target air temperature and target air velocity in the control area, the initial values ​​of the air supply parameters for each air outlet are calculated based on the jet flow pattern and the spatial coordinates in the positioning module. These air supply parameters include the air supply angle, air supply velocity, and air supply temperature.

[0093] According to the general laws of air jets, the jet trajectory is affected by factors such as the air supply angle, air supply velocity, air supply temperature, and environmental parameters. To ensure the airflow reaches the control area and attenuates to the target parameters, initial values ​​for the air supply direction, air supply temperature, and air supply velocity are required. The following basic principles explain the relationships between these parameters and the principles behind the calculation of initial air supply parameter values. More specific correspondences or patterns can be obtained through experimental research and incorporated into the programmable controller.

[0094] (1) Air supply angle: The air supply angle includes two angles adjusted by horizontal louvers and vertical louvers. The vertical louver adjustment angle can be directly determined by the spatial position of the control area. The angle β between the air supply direction of the horizontal louvers and the horizontal direction is affected by the non-isothermal jet trajectory offset.

[0095]

[0096] Where Ar is the Archimedes number, used to characterize the dimensionless ratio of buoyancy and inertial force, and is related to supply air temperature, ambient temperature, supply air velocity, and vent characteristics. h and γ represent the height difference and horizontal distance of the coordinates, respectively, obtained by the positioning module; a is the dimensionless turbulence coefficient, which is related to the vent type and can be obtained from laboratory studies or relevant research manuals; the value for a movable louvered vent is 0.16; d0 is the hydraulic diameter of the supply air vent, which can be approximately calculated as... (Where, l is the length of the square air vent, and w is the width of the air vent); β represents the angle between the air supply direction of the horizontal louver and the horizontal direction.

[0097] (2) Air supply velocity: According to the general jet law, the air velocity reaching the control area, i.e. the target wind speed u, is related to the air supply velocity v.

[0098]

[0099] (3) Supply air temperature: Adjusted in real time by the regulating module based on the detected value.

[0100] The adjustment module obtains the initial values ​​of the air supply parameters from the calculation module, and adjusts the horizontal and vertical louvers of each air supply outlet and the valves of each air duct so that each air supply outlet of the air conditioner starts to supply air to the control area with the initial values ​​of the air supply parameters.

[0101] Based on the feedback values ​​from each sensor, the difference between the air supply parameters and the calculated parameters at each air outlet is monitored in real time, as well as the difference between the monitored values ​​and the target values ​​in the control area, and the air supply parameters are adjusted in real time.

[0102] The method for adjusting the supply air temperature includes the following steps:

[0103] The adjustment process includes the initial state, the adjustment state, and the stable state.

[0104] Reference Figure 2 and Figure 3 As shown, taking summer cooling as an example, for easier understanding, it is assumed that air outlet 1 corresponds to control area 1, air outlet 2 corresponds to control area 2, and the target temperature T1 < T2, and the temperature monitoring values ​​of the control areas are T1 and T2 respectively. 1t T 2t .

[0105] In the initial state, the two air outlets supply air at the same temperature to cool the overall environment. When the temperature of the two areas approaches the requirement of the control area with the higher target temperature, namely T2, the system enters the adjustment state.

[0106] Adjust the settings: air outlet 1 maintains low-temperature air supply to further reduce the temperature of control zone 1; air outlet 2 gradually increases the air supply temperature, and monitors ΔT2=T in real time. 2t -T2 maintains the air supply parameters after stabilizing the temperature of the controlled area near the target temperature. The controlled area enters a stable state when it approaches the target temperature T1.

[0107] In a steady state, real-time monitoring of ΔT2=T 2t -T2 and ΔT1=T 1t -T1 simultaneously adjusts the air supply temperature of both air outlets, ensuring that the air supply parameters stabilize after both control zones reach the target temperature.

[0108] The air mixing module is used to obtain different airflow parameters from a single air conditioner. It acquires the airflow parameters from each vent of the regulating module and adjusts the valves in each duct within the air conditioner to obtain airflow parameters of varying specifications.

[0109] In cooling mode, the return air inside the air conditioner undergoes heat exchange to become cooling air, which is supplied to the control area with a lower target temperature. For the control area with a higher target temperature, the cooling air is mixed with indoor return air that has not passed through the heat exchanger. Thus, each air outlet delivers airflow at a different temperature depending on the mixing ratio. When the target temperature of the higher-temperature control area exceeds the temperature achievable solely by using indoor return air, reheating is supplemented using high-temperature outdoor air.

[0110] In heating mode, the return air inside the air conditioner undergoes heat exchange to become hot air, satisfying the supply air for control areas with higher target temperatures. For control areas with lower target temperatures, the hot air is mixed with unexchanged indoor return air, resulting in airflows of different temperatures being delivered from each vent. Furthermore, when the target temperature in the lower-temperature control area is lower than the temperature achievable solely by using indoor return air, supplemental cooling is provided using low-temperature outdoor air.

[0111] Reference Figure 4 and Figure 5As shown, for further understanding, we will still take the summer cooling condition as an example, assuming that air outlet 1 corresponds to control area 1 and air outlet 2 corresponds to control area 2. And the target temperature T1 < T2.

[0112] Reference Figure 6 As shown, after the indoor return air enters the air conditioner, it is divided into "cooling air" that passes through the heat exchanger, "direct return air" that is sent directly back to the room without passing through the heat exchanger, and "re-cooling air" that passes through the outdoor heat exchanger or outdoor fresh air.

[0113] In the initial state, both areas are cooled. At this time, all return air is cooled by air conditioning heat exchange, and air outlet 1 and air outlet 2 both send out "cooling air" with a lower temperature.

[0114] In the adjustment state, the temperature of the air outlet 2 rises. At this time, the "cooling air" still cools according to the needs of the air outlet 1. The air supplied by the higher-temperature air outlet 2 is a mixture of "cooling air" and "direct return air".

[0115] Under stable conditions, the air conditioner operates in three modes based on indoor temperature requirements:

[0116] Mode 1: The temperature of the "cooling air" is determined based on the supply air temperature of air outlet 1. Air outlet 2 delivers a mixture of "cooling air" and "direct return air" at higher temperatures.

[0117] Mode 2: The "cooling air" temperature is determined based on the supply air temperature of air outlet 1. Air outlet 2 circulates the air within the room, and the supply air is entirely "direct return air".

[0118] Mode 3: The temperature of the "cooling air" is determined based on the supply air temperature of air outlet 1. If the temperature of the "direct return air" control area 2 delivered by air outlet 2 is still lower than the target temperature T2, then reheated air is added. The reheated air is obtained by exchanging heat with the outdoor high-temperature environment through a medium or by directly supplementing the outdoor fresh air.

[0119] In summary, this invention provides a novel method for creating different thermal environments for home or office settings. This method allows for independent control of environmental parameters in different areas, meeting the thermal needs of different individuals. It also provides a new method for obtaining airflows of varying temperatures and speeds using a single air conditioner. This method can be combined with various types of air conditioners, such as wall-mounted, floor-standing, and central air conditioning systems, making it more convenient for use in typical home and office environments.

[0120] This invention provides a system and method for achieving diverse thermal environments in a space based on a single air conditioner. The system involves setting two or more air outlets on the air conditioner, dividing the room into zones and establishing a spatial correspondence between the control zone and the air outlets. The system independently adjusts the airflow mixing ratio of each air outlet according to the needs of people in each zone to obtain airflow with different parameters, and then sends the airflow into the control zone. This achieves the goal of creating different thermal environments in different areas of the same room using a single air conditioner, thus meeting the thermal needs of different people in a shared space.

[0121] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0122] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A system for achieving diverse spatial thermal environments based on a single air conditioner, characterized in that, include: Positioning module: Determines the correspondence between air outlets and control areas, and inputs the spatial coordinates of each control area; Calculation module: Calculates the initial values ​​of the air supply parameters for each air outlet based on personnel needs and the spatial coordinates in the positioning module; Adjustment module: acquires the initial value of the air supply parameter, enables each air outlet of the air conditioner to start supplying air to the control area with the initial value of the air supply parameter, and adjusts the air supply parameter in real time according to the difference between the feedback value of the control area and the target value; Mixing module: acquires the supply air parameters of each air outlet in the adjustment module, and adjusts the return air ratio of each air outlet according to the supply air parameters; The indoor unit of the air conditioner is designed with two or more air outlets, each of which is equipped with an independent air supply duct. The air supply duct is connected to three ducts, wherein the first duct supplies cooling air or heating air that has been treated by the air conditioner heat exchanger, the second duct supplies indoor return air that does not pass through the air conditioner heat exchanger, and the third duct supplies air that exchanges heat with the outside or outdoor fresh air. Each duct is equipped with a valve to regulate the flow rate. Since the airflow temperatures of the three ducts are different, the mixing ratio of the three airflows is adjusted by the valves to obtain airflows with different temperatures. The adjustment of supply air temperature includes: initial state, adjustment state and stable state; Under summer cooling conditions, the first air outlet corresponds to the first control area, and the second air outlet corresponds to the second control area. The target temperature of the first control area is T1, and the target temperature of the second control area is T2, where T1 < T2. The monitored temperature values ​​for the control areas are T1, T2 ... 1t T 2t ; Initial state: The two air outlets supply air at the same temperature to cool the overall environment. When the temperature of the two control zones approaches the requirement of the control zone with the higher target temperature, i.e., T2, the system enters the adjustment state. Adjustment status: The first air outlet maintains low-temperature air supply, continuing to reduce the temperature of the first control zone; the second air outlet increases the air supply temperature, and the difference between the monitored value and the target value is monitored in real time: ΔT2=T 2t -T2, after stabilizing the temperature of the controlled area near the target temperature, maintain the air supply parameters, and enter a stable state when the first controlled area approaches the target temperature T1; Steady state: Real-time monitoring of ΔT2 = T 2t -T2 and ΔT1=T 1t -T1 simultaneously adjusts the air supply temperature of both air outlets, ensuring that the air supply parameters stabilize after both control zones reach the target temperature.

2. The system for achieving diverse spatial thermal environments based on a single air conditioner according to claim 1, characterized in that, Each air outlet is equipped with horizontal and vertical louvers to adjust the airflow direction.

3. The system for achieving diverse spatial thermal environments based on a single air conditioner according to claim 1, characterized in that, Temperature and wind speed sensors are installed in each control area of ​​the air conditioner, and temperature and wind speed sensors are installed at the return air duct, the heat exchanger outlet duct, and each air outlet.

4. A method for achieving diverse spatial thermal environments based on a single air conditioner, based on the system for achieving diverse spatial thermal environments based on a single air conditioner as described in any one of claims 1-3, characterized in that, include: Step S1: Divide the target area of ​​indoor air conditioning into multiple control areas, with each air outlet corresponding to a control area, and input the correspondence and the relative spatial relationship between the air outlet and the control area into the positioning module in coordinate form; Step S2: Obtain the target air temperature and target air velocity of each pre-set control area. After obtaining the target air temperature and target air velocity of the control area, calculate the initial value of the air supply parameters of each air outlet according to the jet law and the spatial coordinates in the positioning module. Step S3: Obtain the initial values ​​of the air supply parameters, adjust the horizontal and vertical louvers of each air supply outlet and the valves of each air duct, so that each air supply outlet of the air conditioner starts to supply air to the control area with the initial values ​​of the air supply parameters; Based on the feedback values ​​from each sensor, the difference between the air supply parameters and the calculated parameters of each air outlet is monitored in real time, as well as the difference between the monitored values ​​and the target values ​​in the control area, and the air supply parameters are adjusted in real time. Step S4: Obtain the air supply parameters of each air outlet from the previous step, and adjust the valves of each air duct in the air conditioner to obtain air supply airflow with different parameters.

5. The method for achieving diverse spatial thermal environments based on a single air conditioner according to claim 4, characterized in that, The coordinates in step S1 include: the direction, height difference, and horizontal distance of each control area relative to the air conditioning vent.

6. The method for achieving diverse spatial thermal environments based on a single air conditioner according to claim 4, characterized in that, The step S2, which involves obtaining the target air temperature and target air velocity for each control area, includes: Parameters can be directly input by users; Alternatively, it can be obtained through machine learning based on the correspondence between the user's temperature adjustment habits and detectable physiological parameters; Alternatively, it can be obtained by combining it with other end devices that have human thermal comfort monitoring functions.

7. The method for achieving diverse spatial thermal environments based on a single air conditioner according to claim 4, characterized in that, The initial values ​​of the air supply parameters in step S2 include: air supply angle, air supply speed and air supply temperature; The calculation of initial values ​​for air supply parameters includes: Air supply angle: The air supply angle includes two angles adjusted by horizontal and vertical louvers. The vertical louver adjustment angle is directly determined by the spatial position of the control area. The angle β between the air supply direction of the horizontal louvers and the horizontal direction is affected by the non-isothermal jet trajectory offset. Where Ar is the Archimedes number, which characterizes the dimensionless ratio of buoyancy and inertial force, and is related to the supply air temperature, ambient temperature, supply air velocity, and vent characteristics; h and γ represent the height difference and horizontal distance of the coordinates, respectively, obtained by the positioning module; a is the dimensionless turbulence coefficient; d0 is the hydraulic diameter of the air outlet; β represents the angle between the supply air direction of the horizontal louver and the horizontal direction. Air supply velocity: According to the jet flow law, the air velocity reaching the control area, i.e., the target wind speed u, is related to the air supply velocity v. Supply air temperature: Adjusted in real time by the regulating module based on the detected value.

8. The method for achieving diverse spatial thermal environments based on a single air conditioner according to claim 4, characterized in that, Step S4 includes: Compare the target temperatures T1 and T2 of the first and second control regions; In cooling mode, the return air inside the air conditioner becomes cooling air after heat exchange, which meets the air supply needs of the control area with a lower target temperature. For the air supply to the control area with a higher target temperature, the cooling air and the indoor return air that has not passed through the heat exchanger are mixed. Thus, each air outlet delivers airflow with different temperatures according to the different mixing ratios. When the target temperature of the control area with a higher temperature is higher than the temperature that can be achieved by using only indoor return air, outdoor high-temperature air is used to supplement reheat. In heating mode, the return air inside the air conditioner becomes hot air after heat exchange, which meets the air supply needs of the control area with a higher target temperature. For the control area with a lower target temperature, the hot air and the indoor return air that has not undergone heat exchange are mixed, so that each air outlet delivers airflow with different temperatures. When the target temperature of the control area with a lower temperature is lower than the temperature that can be achieved by using only indoor return air, outdoor low-temperature air is used to supplement the cooling.

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