CN110410999B - Top plate distributed multi-air-port collaborative personalized air supply method and air supply system - Google Patents
Top plate distributed multi-air-port collaborative personalized air supply method and air supply system Download PDFInfo
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- CN110410999B CN110410999B CN201910656571.3A CN201910656571A CN110410999B CN 110410999 B CN110410999 B CN 110410999B CN 201910656571 A CN201910656571 A CN 201910656571A CN 110410999 B CN110410999 B CN 110410999B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/46—Improving electric energy efficiency or saving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
- F24F2120/12—Position of occupants
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Abstract
The invention relates to the technical field of air conditioning, and discloses an air supply method and an air supply system of a top plate type personalized zoned air supply air conditioner. The air supply method comprises the following steps: determining the ultimate radius of action R of a single independent tuyerewAnd a radius of coverage R when used independentlys(ii) a Setting air port layout; fitting the relationship between the air supply parameter of the air port and the indoor environment temperature, the actual air supply parameter, the distance d between the user and the air port and the thermal preference TP of the user and the air port through a plurality of example results of CFD simulation; dividing the indoor into three types of areas; measuring the position of the user and the partition class to which the user belongs; determining a thermal preference TP of a user; judging whether a plurality of users exist in each area, and if so, taking the user with a cold thermal preference as an object; determining the distance d between a user and an acting air port; and determining the air supply flow and the air supply angle of the air port, and implementing decision by the control system to carry out comfortable air supply meeting the individual heat preference requirement. The invention quickly provides a comfortable environment and saves energy.
Description
Technical Field
The invention relates to the technical field of air conditioning, in particular to a top plate distributed multi-air-port collaborative personalized air supply method and an air supply system.
Background
In recent years, an air-conditioning air supply method based on human thermal comfort has become a new development direction of an air-conditioning system. Most of the existing air conditioning systems pursue universality, the average value of demand feedback of the general public is taken as a regulation target, and larger thermal preference difference existing among individuals is ignored. Therefore, in order to achieve the final purpose of personalized regulation and control of the air conditioner, the physiological parameters of the user related to heat sensation are effectively monitored, and the thermal preference degree of the individual is judged accurately.
On the other hand, because the traditional air conditioning system realizes the regulation and control of the environment of the whole human body by regulating and controlling the whole indoor environment, the regulation and control of the user environment are relatively slow, and meanwhile, the redundant regulation and control quantity is also absorbed by the region far away from the human body, so that the energy consumption of the air conditioning system is always high, and meanwhile, the traditional air supply mode cannot meet the individual thermal comfort requirements of different indoor heat preferences. In order to improve the indoor space with the above requirements, different forms of station air conditioners have been developed in recent years to meet the requirements of a larger indoor microenvironment, but most of the station air conditioning systems are bound with a working area or facilities aiming at a certain spatial position, are difficult to regulate and control correspondingly according to the change of indoor layout and user positions, and have certain limitations. If a workstation system is configured for each potential user, the manufacturing cost is too high and the system is idle.
Further, there are some patents that combine an air conditioning system with a positioning system, and it is expected that personalized control of a user is achieved through geometric position detection and thermal comfort algorithms. Patent publication No. CN108361926A proposes a control method of an air conditioner based on temperature and cold feeling and the air conditioner, which calculates real-time wind speed by detecting the distance between a heat source and the air conditioner in real time, detects return air temperature difference in real time, and obtains thermal comfort under a steady state by continuous iteration. However, this design is based on a single air conditioner air outlet, and requires a large amount of power to blow air to a heat source located far from the air outlet, and is therefore suitable only for a case where a single user is present indoors. Patent publication No. CN107525237A proposes a control method of an air conditioner that judges whether or not a person is present in a divided indoor area by an infrared sensor, and simplifies calculation of human comfort by a distance measured by a radar and by temperature parameters. However, the infrared sensors adopted by the system are all arranged at the same height, and the detection visual angles of the infrared sensors are all on the horizontal plane, so that infrared information is easily covered by people in the vicinity when a plurality of people exist, and information omission can be caused. On the other hand, both patents with publication numbers CN206723110U and CN107120728A refer to air supply outlets capable of rotating 360 °, wherein the latter explicitly describes the implementation manner thereof, and makes a cushion for personalized and localized air supply of indoor air conditioners. However, the specific planning design of the air supply mode of the air conditioner by the air conditioner and the air conditioner is still yet to be researched.
In summary, the existing air conditioning systems lack the distinction of individual differences, and generally need to regulate and control the thermal environment of the whole room through high-power output to act on users, and the correspondingly designed station air conditioning system has the limitation that the regulation and control area is not easy to change. Meanwhile, the existing patents are all started from an integral system operation method, and the horizontal air supply mode limits the positioning air supply function. Therefore, the invention provides an air supply method of a top plate type personalized zoned air supply air conditioner, which aims to achieve the purpose of personalized and regionalized rapid air supply for users at any indoor position through reasonable layout of air supply outlets arranged on a top plate and application of an intelligent air supply mode, solves the limitation that a station air conditioning system is not easy to be flexible, and provides a new idea for development of smart homes.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is a distributed multi-air-port collaborative personalized air supply method.
In order to achieve the purpose, the invention provides a top plate distributed multi-air-port collaborative personalized air supply method and an air supply system.
A roof distributed multi-air-port collaborative personalized air supply method comprises the following steps:
step S01, determining the limit action radius R of the single independent tuyere according to the layer heightwAnd a radius of coverage R when used independentlys；
Step S02, according to the acting radius RwSetting air inlet layout and spacing D according to the size of a room and the distribution condition of common users, wherein a plurality of independent air inlets are arranged on a roof of the room according to a specific arrangement rule, and all adjacent air inlets of any one independent air supply outlet M are positioned on the top point of a regular hexagon with the M as the center and the side length of the regular hexagon as D;
step S03, fitting the relation between the air supply parameter of the current indoor independent air port and the indoor environment temperature, the actual air supply parameter, the distance d between the user and the air port and the thermal preference TP thereof through a plurality of calculation results of CFD simulation by using the size data of the room;
step S04, dividing the room into three types of areas through geometric division;
step S05, measuring the position of the user by a positioning sensor or radar equipment, and determining the partition class of the user by judging the corresponding coordinate;
step S06, determining the thermal preference TP of the user through manual input or automatic calculation;
step S07, judging whether there are multiple users in each area according to the result of step S04;
step S08, if there are multiple users in the same region, the user with lower thermal preference TP value, i.e. the user with cooler thermal preference, should be selected as the object preferentially;
step S09, determining the distance d between the user and all the acting air ports through coordinate calculation or radar ranging of a positioning system;
and S10, determining the specific air supply flow and air supply angle of the corresponding air outlet by applying the measured parameters through the relational expression determined in the step S03, and implementing decision by the control system to perform comfortable air supply meeting the individual heat preference requirement of the target area where the user is located.
Further, the tuyere interval D of the step S02 is determined by the number of users commonly used in the room and the main distribution position, and it is to be avoided that there are many people in the same division area for a long time, and the distance D cannot be more than twice R at maximumwAnd decreases as the number of common users increases.
Furthermore, as the distance between every two adjacent air outlets, a plurality of air supply outlets with downward openings are uniformly arranged on the top plate of the room on the same regular triangle side, each air supply outlet forms the vertex of the regular triangle, the side length direction of the regular triangle is the first direction, and the perpendicular bisector direction of the regular triangle side is the second direction.
Further, the area division method of step S04 is that, area i is a coverage area of each air blowing port; the area II is positioned outside the coverage area of two adjacent air supply outlets in the first direction and outside the limit area of two adjacent air supply outlets in the second direction; the area III is a part overlapped between the limit areas of the adjacent three air supply openings and is positioned outside each coverage area.
Further, the limit area is larger than the coverage area.
Further, the coverage areas of the air supply outlets are mutually separated; the limit areas between two adjacent air supply outlets in the first direction are partially overlapped; the limit regions between two adjacent blowing ports in the second direction are separated from each other.
Further, in step S10, different personalized air supply strategies are adopted according to the region where the human body is located, if the positioning device detects that the human body is located in region i, a single independent air inlet closest to the human body is opened, if the positioning device detects that the human body is located in region ii, two independent air inlets closest to the human body are opened to perform a synergistic action, and if the positioning device detects that the human body is located in region iii, three independent air inlets closest to the human body are opened to perform a synergistic action.
Further, in the step S09, the distance d between the user position and the tuyere and the area where the user position is located are detected by the wireless positioning sensor.
Further, in step S10, the comfortable air supply is achieved by monitoring and collecting current indoor environmental parameters including indoor temperature, humidity, air outlet speed and wall surface average temperature.
The air conditioner further comprises a control system and air supply outlets, wherein the control system controls the flow and the angle of each air supply outlet through detection data.
Further, physiological parameters of the user are acquired through the wearable device carried by the user, wherein the physiological parameters include but are not limited to local skin surface temperature, body surface temperature change rate, body surface humidity, heart rate, blood flow rate and the like of the user under the current environmental conditions.
Further, current indoor environmental parameters including but not limited to indoor temperature, humidity, air outlet wind speed, wall average temperature and the like are collected through indoor environmental monitoring sensors.
Further, according to the physiological parameters and the environmental parameters, the thermal environment in which the human body is preferred is calculated. In particular, the value of the thermal preference will be expressed in a form that gives the user a perception of the PMV value. When the formula capable of accurately describing the thermal preference value does not exist, the user can manually input the thermal preference value according to self-cognition, and the thermal preference value is defined as follows: preference is given to a cold environment (-0.5), preference to a slightly cold environment (-0.3), preference to a neutral environment (0), preference to a slightly hot environment (0.3), preference to a hot environment (0.5).
Furthermore, indoor air supply is simulated through CFD, results are fitted to obtain a calculation relational expression of air supply parameters, and then four parameters of air supply temperature, indoor average temperature, distance d between a human body and an adjacent air port and human body thermal preference are used as input, so that air supply quantity and air supply angle required to be output by corresponding independent air ports can be obtained.
In a preferred embodiment of the invention, each independent air supply outlet is designed in a ring shape, air is supplied from the ring part, air is not discharged from the inner circle, and the LED lamp can be developed as an illuminating LED lamp or other decorative requirements. Consider that there is no situation where multiple people are in the same area at the same time.
Compared with the prior art, the invention at least comprises the following advantages:
aiming at the condition that a horizontal air supply mode in the prior art is easily interfered by users, the invention adopts a top plate type partition positioning air supply mode, the partition mode can utilize a plane to the maximum extent and cover the operable range of an air conditioning system, and then adjacent air ports are scheduled to carry out cooperative air supply aiming at the users by detecting the positions of the users. The air supply mode has utilized the natural convection effect that the room air arouses by gravity simultaneously, and cold air sinks and forms cold air flow column to in the middle of wrapping up user's income regulated gas fast, make the user obtain higher heat comfort level in the very short time. Meanwhile, the method effectively helps to distinguish individual demand difference for thermal comfort by distinguishing thermal preference and anticipating calculation, so that local environments of users in different indoor areas can be individually regulated and controlled.
The air supply method and the air supply system can rapidly customize the most comfortable surrounding small environment for each user in an individualized way under the condition that indoor hardware facilities are not changed, can save energy, and provide a new idea for the future development of intelligent home furnishing.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the present invention of a ceiling distributed multi-outlet collaborative personalized air supply method and system;
FIG. 2 is a schematic diagram of three types of areas of the air supply outlet of the present invention in the ground projection coverage area;
FIG. 3 is a schematic diagram illustrating an air supply effect of a single independent air port in an embodiment of a ceiling distributed multi-air port collaborative personalized air supply method of the present invention;
FIG. 4 is a schematic diagram illustrating an overall blowing effect in an embodiment of a ceiling-distributed multi-nozzle collaborative personalized blowing method according to the present invention;
FIG. 5 is a graph of results of simulated computed thermal comfort values around a user, in accordance with an embodiment of the present invention.
Detailed Description
The technical contents of the preferred embodiments of the present invention will be more clearly and easily understood by referring to the drawings attached to the specification. The present invention may be embodied in many different forms of embodiments and the scope of the invention is not limited to the embodiments set forth herein.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
The invention firstly provides a top plate distributed multi-air-port collaborative personalized air supply method and an air supply system.
As shown in fig. 1 and fig. 2, a top plate distributed multi-air-port collaborative personalized air supply method includes the following steps:
step S01, determining the limit action radius R of the single independent tuyere according to the layer heightwAnd a radius of coverage R when used independentlys. The air supply outlet adopted by the invention is arranged at the top plate and supplies cold air flow from high to low, and the human body stays at a certain position in a standing posture or a sitting posture in a room, so the path of the cold air flow towards the human body is in a parabola shape, and the specific action distance of the cold air flow is related to the height of a room layer and the size of an air opening. It is understood that the above-mentioned influence parameters can be set according to the actual needs of the user. Preferably, the values are set to be common values in the present embodiment: the layer height is 3m, and the independent air inlets are all set to be circular air inlets with the inner diameter of 0.2m and the outer diameter of 0.4 m. It should be noted that the difference between the inlet air temperature and the ambient temperature also has a small influence on the air supply distance, but this value is considered when determining the specific air supply parameters and can be ignored in the initial partition. The simulation calculation is carried out by constructing a CFD model, and the radius R which can be independently acted by arranging the independent air port in the embodiments1.0m, its workable limiting radius RwIs 1.2 m.
Step S02, according to the acting radius RwAnd setting the air port arrangement distance D according to the size of a room and the distribution condition of common users. Starting from the geometric features, the maximum distance should be:
in the embodiment, a working scene with dispersed crowds is considered, namely, the air port arrangement interval is as large as possible so as to reduce the number of required independent air supply units, and therefore the calculated air port arrangement interval is set to be 1.9 m.
And step S03, fitting the relation between the air supply parameter of the current indoor independent air port and the indoor environment temperature, the actual air supply parameter, the distance d between the user and the air port and the thermal preference TP of the user and the air port through a plurality of calculation results of CFD simulation by using the size data of the room. In this embodiment, the corresponding relation is:
Q＝-1491.295+119.916×d-150.257×PMV+8.513×Tin+50.722×Ta
alpha＝312.173+40.983×d+28.131×PMV-3.325×Tin-8.407×Ta
where Q denotes the incoming wind flow, d is the measured separation, PMV is the expression of the user's thermal preference in the form of a PMV value, TinIndicating the temperature of the incoming wind, TaIndicating the average room temperature.
It should be noted that the CFD simulation method adopted in the present embodiment is only an effective way to implement the establishment of the control strategy in the present air supply method, and the purpose of this is not to limit the present invention, and those skilled in the art should understand that.
Step S04, divide the room into three types of regions by geometric division. The specific division is shown in fig. 2, which is a schematic layout diagram of the air supply outlets in the embodiment of the ceiling distributed multi-air-outlet collaborative personalized air supply method disclosed by the invention. In the figure, Si (i ═ 1, 2.) indicates the position of each individual tuyere by aligning D, R described abovew，RsThe determination of three parameters can draw a region division map of a room with the radius of RwThe solid circles indicate the maximum effective range of the tuyere. Using the position of each tuyere as the center of a circle, RsThe area in the dotted circle with the radius is the area I; a vertical line region (between S1 and S4 in the figure) which is outside a dotted line circle between two adjacent tuyeres and is outside the operable range of the other adjacent tuyere is a region II; the area outside all the dashed circles and within the effective active area of three adjacent tuyeres at the same time is designated as area iii.
And step S05, measuring the position of the user by a positioning sensor or a radar device, and determining the partition type of the user by judging the corresponding coordinates.
If the positioning device detects that the user is in the area I, the air opening acted on the positioning device is judged to be the independent air opening closest to the position (such as S1 in the figure 2);
if the positioning device detects that the user is in the area II, determining that the air openings acted on the positioning device are two air openings which are closest to the position (such as S1 and S4 in the figure 2);
if the positioning device detects that the user is in the area III, the air ports acting on the positioning device are determined to be the three air ports closest to the position (such as S1, S3 and S4 in the figure 2).
In step S06, the thermal preference TP of the user is determined by means of manual input or automatic calculation. The user can set a reference thermal preference for the user according to the habit of the user, and the classification of the reference thermal preference is defined as: preference is given to a cold environment (-0.5), preference to a slightly cold environment (-0.3), preference to a neutral environment (0), preference to a slightly hot environment (0.3), preference to a hot environment (0.5). It is expected that the corresponding predicted thermal preference of the human body can be automatically obtained according to the physiological parameters of the human body collected by the wearable device in combination with the environmental parameters through the existing intelligent classification, prediction algorithm or other more concise relational expressions such as machine learning, and the like, and the method is applied in combination with the air supply method provided by the invention. It should be noted that the specific principles of the related algorithms are disclosed in the prior art and known to those skilled in the art, and have been applied to motion sensing devices in a mature manner, which is not the main point of protection of the present invention and will not be described in detail herein. It should be noted that, if the above-mentioned intelligent identification method of thermal preference is adopted, if the user's experience in person is not in accordance with the actual expectation, the user is preferentially followed and allowed to manually set and adjust this. Preferably, in the embodiment provided by the present invention, the user preference neutral environment (PMV ═ 0) is set artificially.
In step S07, it is determined whether or not there are a plurality of users in each area according to the result of step S04. Particularly, if there is a case where the same supply port is used by different users in different-class areas according to the above method, the user's demand for using a smaller number of ports should be satisfied preferentially. For example, when the same tuyere S is usediThe demand of two users in area I and area II simultaneously, then the user in area I is satisfied to the priority, and satisfies the refrigeration demand of user in area II as far as possible through the mode of increase supply air flow.
Further, if there is a case where the same outlet is used by different users in the same-level area, a user whose thermal preference TP is low, that is, whose thermal preference is cold, should be preferentially selected as the target.
In step S08, if there are multiple users in the same area, the user with a lower thermal preference TP, i.e., a user with a cooler thermal preference TP, should be preferentially selected as the target.
Preferably, in the present embodiment, a case where the tuyere has no use conflict is considered.
And step S09, after determining the independent air ports corresponding to the users, determining the distance d between the users and all the acting air ports of the users through coordinate calculation or radar ranging of a positioning system.
And S10, determining the specific air supply flow and air supply angle of the corresponding air outlet by applying the measured parameters through the relational expression determined in the step S03, and implementing decision by the control system to perform comfortable air supply meeting the individual heat preference requirement of the target area where the user is located.
Simulating an indoor airflow field and a temperature field when a single air supply outlet in the center of a roof plate of a room operates through CFD (computational fluid dynamics), and determining the limiting action radius R of an independent air inletwAnd a covering radius R capable of meeting the requirement of thermal comfort of a user by means of a single tuyeres. According to studies it has been shown that more than 90% of the users will be satisfied when the PMV is between-0.5 and 0.5, so that the coverage of the tuyere is determined on the basis of a single tuyere, i.e. it is possible to independently cool down the PMV of the target position within the range to below-0.5, taking into account the differences in thermal demand between the individuals;
placing a plurality of independent air ports on a room top plate according to a specific arrangement rule;
the specific arrangement rule comprises the following steps: all adjacent air ports of any one independent air supply port M are positioned on the vertex of a regular hexagon with the side length D and the M as the center;
according to the distance between the adjacent air supply outlets, the opening radius and the covering radius, the indoor space is divided into areas, wherein the area I takes each air outlet as the center of a circle and the radius is not more than RsThe distance between the area II and the two adjacent air ports of the first and the second is larger than RsAnd the distance between the second air inlet and the third adjacent air inlet is greater than RwRegion of (1), regionIII is that the distances between the three adjacent independent air ports are all larger than RsAnd not more than RwThe area of (a);
detecting the distance d between the position of a user and the air port and the area where the user is located through a wireless positioning sensor;
if the positioning device detects that the human body is in the area I, a single independent air port closest to the human body is opened;
if the positioning device detects that the human body is in the area II, two independent air ports closest to the human body are opened to perform a synergistic effect;
if the positioning device detects that the human body is in the region III, three independent air ports closest to the human body are started to perform synergistic action;
the method comprises the steps of acquiring physiological parameters of a user through a wearable device carried by the user, wherein the physiological parameters include but are not limited to local skin surface temperature, body surface temperature change rate, body surface humidity, heart rate, blood flow rate and the like of the user under current environmental conditions.
The current indoor environmental parameters are collected through an indoor environmental monitoring sensor, and the environmental parameters include but are not limited to indoor temperature, humidity, air outlet wind speed, wall surface average temperature and the like.
And calculating the thermal environment in which the human body is preferred according to the physiological parameters and the environmental parameters. In particular, the value of the thermal preference will be expressed in a form that gives the user a perception of the PMV value. When the formula capable of accurately describing the thermal preference value does not exist, the user can manually input the thermal preference value according to self-cognition, and the thermal preference value is defined as follows: preference is given to a cold environment (-0.5), preference to a slightly cold environment (-0.3), preference to a neutral environment (0), preference to a slightly hot environment (0.3), preference to a hot environment (0.5).
And simulating indoor air supply through CFD, fitting results to obtain a calculation relational expression of air supply parameters, and inputting four parameters of air supply temperature, indoor average temperature, distance d between a human body and an adjacent air port and human body thermal preference to obtain the air supply volume and the air supply angle required to be output by the corresponding independent air port.
It should be noted that when a situation of multiple persons in the certain partition is detected, the user role with the thermal preference being colder is preferably selected.
As shown in fig. 3 and 4, in the present embodiment, the individual independent air outlets and the overall air supply effect are shown, it can be seen that, by the method, the body bodies of the users at various indoor positions can be immersed in the cold air flow, so that the microenvironment around the users can be accurately controlled under the condition that only a small amount of air supply cold air flow is used and the whole room is not directly acted on.
Fig. 5 is a diagram showing a result of simulated and calculated thermal comfort values around a user in an embodiment of a ceiling distributed multi-air-vent collaborative personalized air supply method disclosed in the present invention. The simulation calculation result shows that under the action of the air supply method, the thermal environment around the user can be quickly cooled within half a minute, and is quickly and stably in the thermal neutral environment required by the user. With the time, the cold air flow input into the room will gradually reduce the average temperature of the whole room, and the air supply parameters obtained by the comprehensive relational expression will be adjusted accordingly, and the user is continuously in a stable comfortable environment according with the self heat requirement.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. A roof distributed multi-air-port collaborative personalized air supply method is characterized by comprising the following steps:
step S01, determining the limit action radius R of the single independent tuyere according to the layer heightwAnd a radius of coverage R when used independentlys；
Step S02, according to the limit action radius RwThe size of the room,Setting air inlet layout and spacing D according to the distribution condition of common users, wherein a plurality of independent air inlets are arranged on a room top plate according to a specific arrangement rule, and all adjacent air inlets of any one independent air supply outlet M are positioned on the top point of a regular hexagon with M as the center and side length of D;
step S03, fitting the relation between the air supply parameter of the current indoor independent air port and the indoor environment temperature, the actual air supply parameter, the distance d between the user and the air port and the thermal preference TP thereof through a plurality of calculation results of CFD simulation by using the size data of the room;
step S04, dividing the room into three types of areas through geometric division; the distance between every two adjacent air ports is arranged on a top plate of a room, a plurality of air supply ports with downward openings are uniformly arranged on the same side of a regular triangle, each air supply port forms the vertex of the regular triangle, the side length direction of the regular triangle is the first direction, and the perpendicular bisector direction of the side of the regular triangle is the second direction; the area division method of the step S04 is that the area I is the coverage area of each air supply outlet; the area II is positioned outside the coverage area of two adjacent air supply outlets in the first direction and outside the limit area of two adjacent air supply outlets in the second direction; the area III is a part overlapped between the limit areas of the three adjacent air supply outlets and is positioned outside each coverage area;
step S05, measuring the position of the user by a positioning sensor or radar equipment, and determining the partition class of the user by judging the corresponding coordinate;
step S06, determining the thermal preference TP of the user through manual input or automatic calculation;
step S07, judging whether there are multiple users in each area according to the result of step S04;
step S08, if there are multiple users in the same region, the user with lower thermal preference TP value, i.e. the user with cooler thermal preference, should be selected as the object preferentially;
step S09, determining the distance d between the user and all the acting air ports through coordinate calculation or radar ranging of a positioning system;
and S10, determining the specific air supply flow and air supply angle of the corresponding air outlet by applying the measured parameters through the relational expression determined in the step S03, and implementing decision by the control system to perform comfortable air supply meeting the individual heat preference requirement of the target area where the user is located.
2. The ceiling distributed multi-tuyere cooperative personalized air supply method as claimed in claim 1, wherein the tuyere interval D of the step S02 is determined by the number of commonly used users and the main distribution position in the room, and the condition that there are many people in the same divided area for a long time is avoided, and dmax cannot be more than twice RwAnd decreases as the number of common users increases.
3. The ceiling distributed multi-tuyere coordinated personalized air supply method according to claim 1, wherein the limit area is larger than the coverage area.
4. The ceiling distributed multi-air-vent collaborative personalized air supply method according to claim 3, wherein coverage areas of the air supply vents are separated from each other; the limit areas between two adjacent air supply outlets in the first direction are partially overlapped; the limit regions between two adjacent air supply openings in the second direction are separated from each other.
5. The ceiling distributed multi-air-vent collaborative individualized air supply method according to claim 1, wherein in step S10, different individualized air supply strategies are adopted according to the region where the human body is located, if the positioning device detects that the human body is located in region i, a single independent air vent closest to the human body is opened, if the positioning device detects that the human body is located in region ii, two independent air vents closest to the human body are opened for synergy, and if the positioning device detects that the human body is located in region iii, three independent air vents closest to the human body are opened for synergy.
6. The ceiling distributed multi-tuyere collaborative personalized air supply method according to claim 1, wherein in the step S09, a distance d between a user position and the tuyere and an area where the user position is located are detected by a wireless positioning sensor.
7. The ceiling distributed multi-air-vent collaborative personalized air supply method according to claim 1, wherein in step S10, comfortable air supply is achieved and current indoor environmental parameters including indoor temperature, humidity, air outlet speed and wall surface average temperature are monitored and collected.
8. An air supply system constructed by the method according to any one of claims 1 to 7, comprising a control system and air supply ports, wherein the control system controls the flow rate and the air supply port angle of each air supply port by detecting data.
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| CN112432321B (en) * | 2020-11-02 | 2022-09-06 | 青岛海尔空调器有限总公司 | Control method and control device for shared air conditioner |
| CN113251482B (en) * | 2021-05-09 | 2022-03-22 | 武汉兴得科技有限公司 | Intelligent building integrated linkage management system and method |
| CN114593463A (en) * | 2021-08-10 | 2022-06-07 | 青岛海尔空调器有限总公司 | Control method of wall-mounted air conditioner indoor unit and computer storage medium |
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| CN114777280B (en) * | 2022-04-29 | 2024-01-16 | 美的集团武汉暖通设备有限公司 | Control method and device of air conditioning system, air conditioning control system and storage medium |
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