CN112762580A - Control method of air conditioning system - Google Patents
Control method of air conditioning system Download PDFInfo
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- CN112762580A CN112762580A CN202011633359.4A CN202011633359A CN112762580A CN 112762580 A CN112762580 A CN 112762580A CN 202011633359 A CN202011633359 A CN 202011633359A CN 112762580 A CN112762580 A CN 112762580A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—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
- F24F11/77—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 by controlling the speed of ventilators
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2120/00—Control inputs relating to users or occupants
- F24F2120/10—Occupancy
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/50—Load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention belongs to the technical field of heat exchange equipment, and particularly relates to a control method of an air conditioning system. The invention aims to solve the problems that the uniform distribution degree of cold and warm air flow in a room can not be ensured when the indoor temperature of the existing air conditioning equipment is adjusted, and the temperature adjusting effect at each position in the room is not uniform. The control method of the air conditioning system can determine the temperature equipartition degree in the room based on the difference between the maximum temperature value and the minimum temperature value in the current environment temperature of a plurality of areas in the room, so that the rotating speed of the indoor fan is regulated and controlled according to the current temperature equipartition degree of the room, the indoor air supply capacity of the air conditioning system is selectively regulated, the indoor temperature environment can be uniformly and quickly regulated when the air conditioning system operates, any position in the room can have good temperature regulation effect, and the overall temperature regulation effect of the air conditioning system is greatly improved.
Description
Technical Field
The invention belongs to the technical field of heat exchange equipment, and particularly relates to a control method of an air conditioning system.
Background
In order to maintain comfortable ambient temperature, air conditioning equipment has become an essential household appliance in people's life, such as household air conditioning equipment in resident homes and multi-split air conditioning equipment in large-scale places such as hotels, office buildings, markets and the like. Specifically, the air conditioning equipment comprises an indoor heat exchange part consisting of at least one indoor unit, an outdoor heat exchange part consisting of at least one outdoor unit and a refrigerant transportation pipeline communicated between the indoor heat exchange part and the outdoor heat exchange part, wherein the refrigerant transportation pipeline can form a loop between the indoor heat exchange part and the outdoor heat exchange part, so that a refrigerant can circularly flow between the indoor heat exchange part and the outdoor heat exchange part to realize refrigerating operation or heating operation.
Usually, indoor heat transfer portion can set up one or more air outlet in a space, but because the space area is great, therefore the whole space is hardly covered to the range of blowing of air outlet to the cold and warm air current that the temperature is different is the mode of upper and lower distribution usually and is diffused in the space, consequently, the hot air current that indoor heat transfer portion blew out or the even distribution degree of cold air current in the space can not be ensured, the temperature of each position in the space can not be adjusted by the even regulation along with the operation of air conditioner, the whole temperature regulation effect in the space is not good.
Accordingly, there is a need in the art for a new control method of an air conditioning system to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problems that the indoor temperature of the existing air conditioning equipment cannot be guaranteed to be uniformly distributed in the room, and the temperature adjusting effect of each position in the room is not uniform, the present invention provides a control method of an air conditioning system, the control method comprising: acquiring current ambient temperatures of a plurality of areas in a room; calculating a difference value between a maximum current ambient temperature and a minimum current ambient temperature among current ambient temperatures of the plurality of regions; comparing the calculated difference value with a first set threshold value; and selectively adjusting the rotating speed of an indoor fan of the air conditioning system according to the comparison result of the difference value and the first set threshold value.
In a preferred technical solution of the above control method, the step of "selectively adjusting the rotation speed of the indoor fan of the air conditioning system according to the comparison result between the difference and the first set threshold" specifically includes: and if the difference value is larger than the first set threshold value, increasing the rotating speed of an indoor fan of the air conditioning system.
In a preferred technical solution of the above control method, the step of "selectively adjusting the rotation speed of the indoor fan of the air conditioning system according to the comparison result between the difference and the first set threshold" specifically includes: and if the difference value is equal to the first set threshold value, not adjusting the rotating speed of the indoor fan of the air conditioning system.
In a preferred embodiment of the above control method, the step of selectively adjusting the rotation speed of the indoor fan of the air conditioning system according to the comparison result between the difference and the first set threshold further includes: and if the difference value is smaller than the first set threshold value, reducing the rotating speed of an indoor fan of the air conditioning system.
In a preferred embodiment of the above control method, the step of "acquiring the current ambient temperatures of a plurality of areas in a room" specifically includes: acquiring a first intelligent operation mode instruction; and if the first intelligent operation mode instruction is acquired, acquiring the current ambient temperatures of the plurality of areas in the room.
In a preferred embodiment of the above control method, after the step of "acquiring the current ambient temperatures of the plurality of areas in the room", the control method further includes: under the condition that a user exists in a room, acquiring the body temperature of the user and determining the area where the user is located; calculating the difference value between the body temperature of the user and the current environment temperature of the area where the user is located; comparing the difference value between the body temperature of the user and the current environment temperature of the area where the user is located with a second set threshold value; and controlling the air outlet direction of the air conditioning system according to the comparison result of the difference value between the body temperature of the user and the current environment temperature of the area where the user is located and the second set threshold.
In a preferred technical solution of the control method, the step of "controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold" specifically includes: and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is larger than or equal to the second set threshold value, controlling the air conditioning system to blow air to the area where the user is located.
In a preferred technical solution of the control method, the step of "controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold" specifically includes: and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is smaller than the second set threshold value, controlling the air conditioning system to blow air to other areas except the area where the user is located.
In a preferred technical solution of the above control method, the step of "obtaining the body temperature of the user and determining the area where the user is located" specifically includes: acquiring a second intelligent operation instruction; and if the second intelligent operation instruction is obtained, obtaining the body temperature of the user and determining the area where the user is located.
In a preferred embodiment of the above control method, before the step of "acquiring the current ambient temperatures of a plurality of areas in the room", the control method further includes: acquiring initial ambient temperatures of the plurality of areas in the room; calculating a room load from the initial ambient temperatures in the plurality of zones; calculating a difference between the room load and a preset load; and determining the initial opening degree of an electronic expansion valve of the air conditioning system according to the difference value between the room load and the preset load.
The control method of the air conditioning system can determine the temperature equipartition degree in the room based on the difference between the maximum temperature value and the minimum temperature value in the current environment temperatures of a plurality of areas in the room, so that the rotating speed of the indoor fan is regulated and controlled according to the current temperature equipartition degree of the room, the indoor air supply intensity of the air conditioning system is selectively regulated, the indoor temperature environment can be uniformly and rapidly regulated when the air conditioning system operates, any position in the room can have a good temperature regulation effect, and the overall temperature regulation effect of the air conditioning system is greatly improved.
Further, the control method of the air conditioning system can increase the rotating speed of the indoor fan of the air conditioning system when the difference value between the maximum temperature value and the minimum temperature value in the current environment temperatures of the plurality of areas in the room is larger than the first set threshold value and the temperature distribution in the room is uneven, so that the air supply capacity of the air conditioning system is enhanced, the air conditioning system can blow cold/hot air to farther positions in the room, meanwhile, the air flow disturbance in the room is improved, the intersection and heat transfer processes of the air flows with different temperatures are accelerated, the adjustment process of the whole indoor temperature is accelerated, and the effect of uniform temperature distribution in the room is achieved quickly.
Further, the control method of the air conditioning system of the invention can maintain the rotating speed of the indoor fan of the current air conditioning system unchanged when the difference value between the maximum temperature value and the minimum temperature value in the current environment temperatures of the plurality of areas in the room is equal to the first set threshold value and the uniformity degree of the temperature distribution in the room meets the expected standard, so as to maintain the current air supply intensity to uniformly increase or decrease the temperature of each position in the room.
Furthermore, the control method of the air conditioning system can reduce the rotating speed of the indoor fan of the current air conditioning system when the difference value between the maximum temperature value and the minimum temperature value in the current environment temperature of the plurality of areas in the room is smaller than the first set threshold value and the temperature distribution uniformity degree in the room is far better than the expected standard, so that the energy consumed during the operation of the air conditioning system is reduced by reducing the energy consumption of the indoor fan on the basis of meeting the current air supply and temperature regulation requirements, the air conditioning system can operate in an energy-saving mode, and the power consumption of a user at home is reduced.
Preferably, the control method of the air conditioning system of the present invention can also control the air supply direction of the air conditioning system according to the difference between the body temperature of the user and the current ambient temperature of the area where the user is located, so as to selectively determine the air outlet direction of the air conditioning system according to the temperature sensation of the user, thereby adjusting the indoor temperature environment with the body feeling comfort of the user as a priority condition.
Further, the control method of the air conditioning system can blow air to the area where the user is located when the difference between the body temperature of the user and the current environment temperature of the area where the user is located is large and the user obviously feels cold or sultry, so that the temperature of the area where the user is located is preferably adjusted, the temperature difference between the user and the surrounding environment is rapidly reduced, and the somatosensory comfort degree of the user is rapidly improved.
Further, the control method of the air conditioning system can blow air to other areas except the area where the user is located when the difference between the body temperature of the user and the current environment temperature of the area where the user is located is small, so that hot air or cold air is prevented from being blown to the user when the comfort level of the user is appropriate, and the comfort level experience of the user is guaranteed.
Preferably, the control method of the air conditioning system of the invention can divide a room into a plurality of regions, calculate the room load based on the initial environment temperatures of the plurality of regions, refine the load of each region in the room, accurately calculate the room load value corresponding to the whole room, accurately determine the difference between the current temperature condition and the expected temperature condition of the room based on the difference between the room load value and the preset load, and improve the accuracy of determining the temperature regulation requirement in the room, so that the actual operation requirement of the air conditioning system can be obtained more accurately, and the initial opening degree of the electronic expansion valve is more matched with the actual operation requirement of the air conditioning system.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. The attached drawings are as follows:
FIG. 1 is a flow chart of the steps of a method of controlling an air conditioning system of the present invention;
fig. 2 is a flowchart illustrating steps of a preferred embodiment of a control method of an air conditioning system according to the present invention.
Detailed Description
It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the air conditioning system of the present invention may be any heat exchange system having a similar degree of temperature equalization for the heat exchange space, such as a multi-split air conditioning system, a household air conditioning system, and the like.
It should be noted that in the description of the present invention, although the steps of the control method of the present invention are described in a specific order in the present application, the order is not limited, and those skilled in the art can perform the steps in a different order without departing from the basic principle of the present invention.
Based on the problem that the uniform distribution degree of cold/warm air flow in a room cannot be guaranteed when the indoor temperature is regulated by the existing air conditioning equipment pointed out in the background technology, the invention provides a control method of an air conditioning system, aiming at selectively regulating the rotating speed of an indoor fan according to the actual uniform distribution situation of the indoor temperature, so that the rapid intersection of the air flow at different indoor temperatures is guaranteed by changing or maintaining the air supply intensity of the air conditioning system, the temperature regulation conditions of all indoor positions can be coordinated and consistent, and the overall temperature regulation effect of the air conditioning system is improved.
Referring first to fig. 1, fig. 1 is a flowchart illustrating steps of a control method of an air conditioning system according to the present invention. As shown in fig. 1, the control method of the air conditioning system of the present invention includes:
step S1: acquiring current ambient temperatures of a plurality of areas in a room;
step S2: calculating a difference value between the maximum current ambient temperature and the minimum current ambient temperature in the current ambient temperatures of the plurality of areas;
step S3: comparing the calculated difference value with a first set threshold value;
step S4: and selectively adjusting the rotating speed of the indoor fan of the air conditioning system according to the comparison result of the difference and the first set threshold.
In the above step S1, the division manner of the plurality of areas in the room is not fixed, and the division manner may be determined according to the environmental arrangement requirement, the temperature collection condition, the temperature adjustment requirement, and the like in the room. For example, a group of parallel vertical surfaces may be arranged in a room to divide the room into ten regions, for example, nine parallel vertical surfaces may be arranged in the room to divide the room into ten regions, or two groups of parallel vertical surfaces may be arranged in the room, each group of two vertical surfaces are parallel to each other, and the two groups of parallel vertical surfaces intersect with each other to divide the room into nine regions, or, in addition, a plurality of horizontal surfaces may be arranged in the room to divide the room into layers and blocks, in which case, the space size and the corresponding ambient temperature of each region may be the same or different, and in the case that a certain region has a large space and a certain difference exists in the temperature distribution in the region, the current ambient temperature of the region may be the average temperature of two or more points in the region or the temperature of any point in the region (e.g., the center point temperature of the region, the temperature of the two or more points in the region, The temperature at the lowest point of the temperature of the region, etc.), or the region may be divided according to the temperature distribution of different regions in the room, for example, if N regions with different air temperatures are included in the room, the distribution of the N regions with different temperatures is directly used as the region division standard in the room to divide the space in the room into N regions with different temperatures, in which case, the space size of each of the N regions is not fixed but the air temperatures at the respective positions in the same region are substantially equal.
The device for acquiring the current ambient temperature in each zone is any temperature detection device capable of meeting the temperature measurement requirement of each zone, and the specific setting form of the temperature detection device can be set according to the zone division condition, the temperature measurement capability of the device, the temperature acquisition requirement and the like, for example, when a plurality of zones in a room are divided based on the temperature distribution condition in the room and the temperature measurement device can detect a plurality of temperature data of zones with different temperatures in the room, only one temperature detection device can be set at the position where the temperature data of all the zones in the room can be acquired, or one temperature detection device can be set corresponding to each of the divided zones in the room under the condition that a plurality of zones are already divided in the room. The temperature detection equipment has the same structure as the existing temperature detection equipment such as an infrared thermometer, a gas thermometer, a semiconductor thermometer and the like, and the specific temperature measurement structure of the temperature detection equipment is not described again.
In the above step S2, the maximum current ambient temperature is the highest temperature among the acquired current ambient temperatures of the plurality of regions, and the minimum current ambient temperature is the lowest temperature among the acquired current ambient temperatures of the plurality of regions, for example, in a case where the room is divided into six regions, if the air temperature corresponding to each region is 23 ℃, 26 ℃, 21 ℃, 23 ℃, 25 ℃, 20 ℃, respectively, the maximum current ambient temperature is 26 ℃, and the minimum current ambient temperature is 20 ℃.
In the above steps S3 to S4, the first threshold is a set and expected comparison standard value, the difference between the maximum current ambient temperature and the minimum current ambient temperature is compared with the comparison standard value, the difference between the actual difference between the maximum current ambient temperature and the minimum current ambient temperature and the expected comparison standard value can be determined, so as to determine whether the temperature difference between different areas in the room is within the expected standard, the temperature distribution is uniform or does not meet the expected standard, or the temperature distribution is quite nonuniform, the indoor fan speed of the air conditioning system is determined according to the uniform condition of the specific temperature distribution in the room, and the appropriate blowing intensity which matches with the current blowing temperature demand and does not meaningfully consume excessive energy is selected.
In a possible implementation manner, the step S4 specifically includes:
and if the difference value is larger than the first set threshold value, increasing the rotating speed of the indoor fan of the air conditioning system.
In the above steps, the difference between the maximum current ambient temperature and the minimum current ambient temperature is greater than the first set threshold, which indicates that the difference between the maximum current ambient temperature and the minimum current ambient temperature is greater and lower than the expected temperature uniform distribution standard, at this time, increasing the indoor fan rotation speed of the air conditioning system can increase the flow strength of the air flow blown out by the air conditioning system, on one hand, the cold air flow or the warm air flow blown out by the air conditioning system can be prompted to flow to a farther position, and the temperature regulation range is wider, on the other hand, the indoor overall air flow disturbance can be increased in a large range by increasing the wind power strength, and the intersection and temperature transfer process of the cold air flow or the warm air flow and the indoor air is accelerated, so that the air flow interaction effect of each area in the room is enhanced, and the temperature regulation purpose of uniformly regulating the overall.
In another possible embodiment, the step S4 specifically includes:
and if the difference value is equal to the first set threshold value, not adjusting the rotating speed of the indoor fan of the air conditioning system.
In the above step, the difference between the maximum current ambient temperature and the minimum current ambient temperature is equal to the first set threshold, which indicates that the difference between the maximum current ambient temperature and the minimum current ambient temperature is small and meets the expected temperature uniform distribution standard, and at this time, the current indoor fan rotation speed is maintained unchanged, so that the current wind strength of the air conditioning system can be maintained to continuously adjust the temperature, and the air conditioning system can continuously adjust the indoor overall temperature in a large range and uniformly.
In another possible implementation manner, the step S4 specifically includes:
and if the difference value is smaller than the first set threshold value, reducing the rotating speed of the indoor fan of the air conditioning system.
In the above step, the difference between the maximum current ambient temperature and the minimum current ambient temperature is smaller than the first set threshold, which indicates that there is basically no obvious difference between the maximum current ambient temperature and the minimum current ambient temperature, and the difference is much higher than the expected temperature uniform distribution standard, at this time, although the wind strength of the air conditioning system can meet the requirement of uniformly improving the overall indoor temperature, if the rotating speed of the indoor fan is reduced, the temperature uniform distribution degree of a plurality of areas in the room can also meet the expected standard, so that the energy saving effect of the air conditioning system can be optimized on the basis of meeting the requirement of uniformly adjusting the overall indoor temperature environment by reducing the rotating speed of the indoor fan, so as to further improve the overall operating performance of the air conditioning system.
In a preferred embodiment, step S4 of the control method of the air conditioning system of the present invention includes the above three specific embodiments of selectively adjusting the indoor fan rotation speed, so that the air conditioning system can measure the current temperature distribution in the room according to the set difference criterion, thereby increasing, decreasing or maintaining the indoor fan rotation speed according to the temperature distribution of the multiple areas in the room. When the rotating speed of the indoor fan needs to be changed, the specific increasing or decreasing mode of the rotating speed of the indoor fan can be set based on an adjusting mechanism of the actual rotating speed of the indoor fan of the air conditioning system, and the adjusting mode of the rotating speed of the indoor fan can be a mode of directly increasing or decreasing one gear of the rotating speed of the indoor fan, such as increasing or decreasing the rotating speed of the middle-gear fan to the rotating speed of a high-gear fan or decreasing the rotating speed of the low-gear fan, or can be a mode of increasing or decreasing the rotating speed of the set fan every time, such as increasing or decreasing n (r/min) based on.
Based on any of the above embodiments, the step S1 of "acquiring the current ambient temperatures of the plurality of areas in the room" includes:
acquiring a first intelligent operation mode instruction;
if the first intelligent operation mode instruction is obtained, the current ambient temperatures of a plurality of areas in the room are obtained.
In the above steps, the first intelligent operation mode instruction is an operation instruction of an indoor temperature uniform distribution mode, and under the condition of acquiring the instruction, the air conditioning system executes the steps of determining the current temperature uniform distribution degree in a room and selectively adjusting the rotating speed of an indoor fan according to the current temperature uniform distribution degree, so that a user can judge whether the indoor temperature distribution is uneven during the operation of the air conditioner according to the actual layout condition at home, and then selectively control the air conditioning system to execute the first intelligent operation mode instruction according to the actual temperature adjustment requirement, thereby avoiding the air conditioning system from also adjusting the indoor temperature uniform distribution degree and increasing unnecessary energy consumption under the conditions that the installation environment of an indoor heat exchange part of the air conditioning system is spacious and the airflow circulation is excellent.
Preferably, after the step S1, the control method of the air conditioning system of the present invention further includes:
under the condition that a user exists in a room, acquiring the body temperature of the user and determining the area where the user is located;
calculating the difference value between the body temperature of the user and the current environment temperature of the area where the user is located;
comparing the difference value between the body temperature of the user and the current environment temperature of the area where the user is located with a second set threshold value;
and controlling the air outlet direction of the air conditioning system according to the comparison result of the difference value between the body temperature of the user and the current environment temperature of the area where the user is located and the second set threshold.
In the above steps, when the room is divided into a plurality of areas and the user is in the room, the body temperature of the user is obtained, and the area in which the user is located is determined, and then the current ambient temperature of the area in which the user is located is called, so as to calculate the difference degree between the body surface temperature of the user and the current ambient temperature of the area in which the user is located. The second set threshold is a set expected difference standard, the difference value between the body surface temperature of the user and the current environment temperature of the area where the user is located is compared with the second set threshold, the difference degree between the body surface temperature of the user and the temperature of the surrounding environment of the user can be measured, and therefore whether the user feels cold or sultry obviously at present is determined, the air outlet direction of the air conditioning system is controlled according to the requirement of the body feeling comfort degree of the user, and cold air flow or warm air flow is controlled to be close to the user to be blown out or to be far away from the user to be blown out. The user body temperature is a temperature at a position on the user body which is arbitrarily close to the average body temperature, or an average temperature calculated based on corresponding temperatures of different parts of the user body. The area where the user is located may be determined based on a human body infrared sensing device, an image acquisition device, and the like.
Further, the step of "controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold" specifically includes:
and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is larger than or equal to a second set threshold value, controlling the air conditioning system to blow air to the area where the user is located.
In the above step, when the difference between the body temperature of the user and the current ambient temperature of the area where the user is located is greater than or equal to the second set threshold and the user can feel a significantly cold or hot feeling when the user is located in an indoor environment, the air conditioning system is controlled to blow air towards the area where the user is located so as to blow hot air flow or cold air flow to the periphery of the user preferentially, so that the indoor temperature is adjusted on the basis of ensuring the somatosensory comfort level of the user as a priority.
Further, the step of "controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold" may further include:
and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is smaller than a second set threshold value, controlling the air conditioning system to blow air to other areas except the area where the user is located.
In the above steps, when the difference between the body temperature of the user and the current ambient temperature of the area where the user is located is smaller than the second set threshold and the user does not feel cold or hot when the user is located in an indoor environment, the air conditioning system is controlled to blow towards other areas except the area where the user is located in the plurality of areas in the room, so that hot air or cold air is prevented from blowing directly towards the user, and the current appropriate somatosensory comfort level of the user is reduced.
Preferably, the step of "obtaining the body temperature of the user and determining the area where the user is located" includes:
acquiring a second intelligent operation instruction;
and if the second intelligent operation instruction is acquired, acquiring the body temperature of the user and determining the area where the user is located.
In the above step, the second intelligent operation mode instruction is an operation instruction of the wind direction adjustment mode based on the comfort level of the human body, and in the case of obtaining the instruction, the air conditioning system performs the step of determining the difference degree between the body temperature of the user and the air temperature of the area where the user is located and selectively blowing air to the user according to the temperature difference degree, so that the specific blowing direction of the air conditioning system is selected according to the air conditioning use habit of the user.
Preferably, before the step S1, the control method of the air conditioning system according to the present invention further includes:
acquiring initial ambient temperatures of a plurality of areas in a room;
calculating a room load from the initial ambient temperatures in the plurality of zones;
calculating a difference between the room load and a preset load;
and determining the initial opening degree of an electronic expansion valve of the air conditioning system according to the difference value between the room load and the preset load.
In the above step, the initial ambient temperature of the plurality of zones in the room is the air temperature before each zone is conditioned. The room load is the total load of the room itself when the respective zones are kept at the respective corresponding air temperatures based on the division of the respective zones of the room. The preset load is an overall load amount required to be provided in the room when each region of the room is maintained at the target temperature. The difference value between the room load and the preset load can reflect the load quantity (refrigeration of the air conditioning system) which needs to be taken away from the room by the air conditioning system or the load quantity (heating of the air conditioning system) which needs to be transmitted into the room when the temperature of each area in the room is adjusted to the expected temperature, the load quantity obtained by the difference value can accurately reflect the operation requirement of the air conditioning system, the initial opening degree of the electronic expansion valve can be accurately determined according to the operation requirement of the air conditioning system, the initial opening degree of the electronic expansion valve is matched with the current actual refrigeration requirement or heating requirement, the situation that the air conditioning system needs to consume a long time to continuously adjust the opening degree of the electronic expansion valve when the initial opening degree of the electronic expansion valve is too high or too low is prevented, the whole temperature adjusting process of the air conditioning system is further prolonged, and the whole.
Further, the step of "calculating a difference between the room load and the preset load" specifically includes:
calculating a preset load according to a set temperature of the air conditioning system;
and calculating the difference value between the room load and the calculated preset load.
In the above steps, the set temperature is a target temperature set by a user or an air conditioning system, and the air conditioning system is operated to adjust the initial ambient temperature of each area in the room to the target temperature. The preset load is the total load required in the room when each region of the room is maintained at the set temperature.
As an example, the step of "calculating the room load according to the initial ambient temperatures in the plurality of zones" includes:
acquiring the areas of a plurality of regions;
calculating the product of the area of each region and the initial ambient temperature and the preset unit load of the region;
and summing the calculated products corresponding to each region, and taking the value calculated by summing as the room load.
In the above step, the preset unit load is a load corresponding to each unit area per degree celsius at a set height of the room. When the room is divided into N areas, and the area and temperature corresponding to each area are S1, T1, S2, T2, S3, T3 … … Sn, Tn in this order, the room load W is:
W＝q(S1·T1+S2·T2+S3·T3+…+Sn·Tn)，
wherein q represents the above-mentioned preset unit load. The specific value of the preset unit load q can be set by those skilled in the art according to the actual layout situation, the actual height and the like in the room.
In a possible embodiment, the step of determining the initial opening degree of the electronic expansion valve of the air conditioning system according to the difference between the room load and the preset load specifically includes:
comparing the difference between the room load and the preset load with a third set threshold and a fourth set threshold;
and if the difference is smaller than a third set threshold value, taking the minimum opening degree of the electronic expansion valve as the initial opening degree of the electronic expansion valve, wherein the third set threshold value is smaller than a fourth set threshold value.
Further, the step of determining the initial opening degree of the electronic expansion valve of the air conditioning system according to the difference between the room load and the preset load specifically includes:
and if the difference between the room load and the preset load is greater than a fourth set threshold, taking the maximum opening degree of the electronic expansion valve as the initial opening degree thereof.
Further, the step of determining the initial opening degree of the electronic expansion valve of the air conditioning system according to the difference between the room load and the preset load specifically includes:
and if the difference value between the room load and the preset load is larger than a third set threshold and smaller than a fourth set threshold, taking the set opening degree of the electronic expansion valve as the initial opening degree of the electronic expansion valve, wherein the calculation formula of the set opening degree L is as follows:
L＝Lmin+((Lmax-Lmin)/(W2-W1))(W-W1)，
in the above calculation formula, Lmax is the maximum opening degree of the electronic expansion valve, Lmin is the minimum opening degree of the electronic expansion valve, W1 is the third set threshold, W2 is the fourth set threshold, and W is the absolute value of the difference between the calculated room load and the preset load.
In the above embodiment, the above W1 and W2 demarcate three comparison sections "less than W1", "between W1 and W2", and "greater than W2" for the difference W between the room load and the preset load, so as to determine the degree of difference between the room load and the preset load, which of the three range criteria that the operating demand of the air conditioning system is in a lower, moderate, and higher range, by determining which section the difference W between the room load and the preset load falls into. When the difference W between the room load and the preset load is smaller than W1, the difference between the room load and the preset load is smaller, the operation requirement of the air conditioning system is lower, and the minimum opening of the electronic expansion valve can be used as the initial opening; when the difference W between the room load and the preset load is between W1 and W2, the difference between the room load and the preset load is a little, the operation requirement of the air conditioning system is moderate, and the set opening degree of the electronic expansion valve between the maximum opening degree and the minimum opening degree can be used as the initial opening degree; when the difference W between the room load and the preset load is greater than W2, the room load and the preset load are more different, and the operation requirement of the air conditioning system is higher, at this time, the maximum opening degree of the electronic expansion valve may be used as the initial opening degree.
Of course, in practical applications, those skilled in the art may also apply only any one or two of the above three situations, for example, setting only the third set threshold value and selectively taking the minimum opening degree of the electronic expansion valve as the initial opening degree thereof, or in the case of setting the third set threshold value and the fourth set threshold value, determining only whether the difference between the room load and the preset load is smaller than the third set threshold value or larger than the fourth set threshold value, so as to selectively take the minimum opening degree or the maximum opening degree of the electronic expansion valve as the initial opening degree thereof.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a preferred embodiment of a control method of an air conditioning system according to the present invention. As shown in fig. 2, in a preferred embodiment of the present invention, the method for controlling an air conditioning system at a target temperature specifically includes the steps of:
step S100: acquiring initial ambient temperatures of a plurality of areas in a room;
step S101: calculating a room load from the initial ambient temperatures in the plurality of zones;
step S102: calculating a difference value delta W between the room load and a preset load;
step S103 is executed when the difference value is DeltaW < W1, and step S104 is executed when W1 < DeltaW < W2; step S105 is executed when Δ W > W2;
step S103: starting the electronic expansion valve to operate by taking the minimum opening degree as an initial opening degree;
step S104: starting the electronic expansion valve to operate by taking the set opening degree as an initial opening degree;
step S105: the electronic expansion valve is caused to start operating with the maximum opening degree as an initial opening degree.
In the case where the above-described step S103, step S104, or step S105 is performed, step S106 and step S1013 are performed simultaneously;
step S106: acquiring a first intelligent operation mode instruction;
step S107: judging whether a first intelligent operation mode instruction is acquired;
executing step S108 under the condition of acquiring the first intelligent operation mode instruction, otherwise, ending the operation of the program from step S106 to step S1012;
step S108: acquiring current ambient temperatures of a plurality of areas in a room;
step S109: calculating a difference value delta T1 between the maximum environment temperature and the minimum environment temperature in the current environment temperatures of the plurality of areas;
step S1010 is performed when Δ T1 < T1; step S1011 is performed when Δ T1 is T1, and step S1012 is performed when Δ T1 > T1;
step S1010: reducing the rotating speed of the indoor fan;
step S1011: maintaining the current indoor fan rotating speed;
step S1012: increasing the rotating speed of the indoor fan;
in the case of step S1010/step S1011/step S1012 being completed, the program operation of the portion from step S106 to step S1012 ends;
step S1013: acquiring a second intelligent operation mode instruction;
step S1014: judging whether a second intelligent operation mode instruction is acquired;
executing step S1015 under the condition that the second smart operation mode instruction is acquired, otherwise ending the operation of the program in the steps S1013-S1018;
step S1015: acquiring the body temperature of a user and determining the area where the user is located and the current environment temperature of the area where the user is located;
step S1016: calculating the difference value delta T2 between the body temperature of the user and the current environment temperature of the area where the user is located;
step S1017 is executed when Δ T2 ≧ T2, and step S1018 is executed when Δ T2 < T2;
step S1017: blowing air towards the area where the user is located;
step S1018: blowing air toward other areas than the area where the user is located.
In the case of step S1017/step S1018 being executed, the program execution of the step S1013-step S1018 portions ends.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (10)
1. A control method of an air conditioning system, characterized by comprising:
acquiring current ambient temperatures of a plurality of areas in a room;
calculating a difference value between a maximum current ambient temperature and a minimum current ambient temperature among current ambient temperatures of the plurality of regions;
comparing the calculated difference value with a first set threshold value;
and selectively adjusting the rotating speed of an indoor fan of the air conditioning system according to the comparison result of the difference value and the first set threshold value.
2. The control method according to claim 1, wherein the step of selectively adjusting the indoor fan speed of the air conditioning system according to the comparison result of the difference value and the first set threshold specifically comprises:
and if the difference value is larger than the first set threshold value, increasing the rotating speed of an indoor fan of the air conditioning system.
3. The control method according to claim 1, wherein the step of selectively adjusting the indoor fan speed of the air conditioning system according to the comparison result of the difference value and the first set threshold specifically comprises:
and if the difference value is equal to the first set threshold value, not adjusting the rotating speed of the indoor fan of the air conditioning system.
4. The control method of claim 1, wherein the step of selectively adjusting an indoor fan speed of the air conditioning system based on the comparison of the difference value to the first set threshold further comprises:
and if the difference value is smaller than the first set threshold value, reducing the rotating speed of an indoor fan of the air conditioning system.
5. The control method according to claim 1, wherein the step of obtaining the current ambient temperatures of the plurality of zones in the room specifically comprises:
acquiring a first intelligent operation mode instruction;
and if the first intelligent operation mode instruction is acquired, acquiring the current ambient temperatures of the plurality of areas in the room.
6. The control method according to any one of claims 1 to 5, characterized in that, after the step of "acquiring the current ambient temperatures of a plurality of areas in a room", the control method further comprises:
under the condition that a user exists in a room, acquiring the body temperature of the user and determining the area where the user is located;
calculating the difference value between the body temperature of the user and the current environment temperature of the area where the user is located;
comparing the difference value between the body temperature of the user and the current environment temperature of the area where the user is located with a second set threshold value;
and controlling the air outlet direction of the air conditioning system according to the comparison result of the difference value between the body temperature of the user and the current environment temperature of the area where the user is located and the second set threshold.
7. The control method according to claim 6, wherein the step of controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold specifically comprises:
and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is larger than or equal to the second set threshold value, controlling the air conditioning system to blow air to the area where the user is located.
8. The control method according to claim 6, wherein the step of controlling the air outlet direction of the air conditioning system according to the comparison result between the difference between the body temperature of the user and the current ambient temperature of the area where the user is located and the second set threshold specifically comprises:
and if the difference value between the body temperature of the user and the current environment temperature of the area where the user is located is smaller than the second set threshold value, controlling the air conditioning system to blow air to other areas except the area where the user is located.
9. The control method according to claim 6, wherein the step of obtaining the body temperature of the user and determining the area where the user is located specifically comprises:
acquiring a second intelligent operation instruction;
and if the second intelligent operation instruction is obtained, obtaining the body temperature of the user and determining the area where the user is located.
10. The control method according to any one of claims 1 to 5, characterized in that, prior to the step of "acquiring the current ambient temperatures of a plurality of areas in a room", the control method further comprises:
acquiring initial ambient temperatures of the plurality of areas in the room;
calculating a room load from the initial ambient temperatures in the plurality of zones;
calculating a difference between the room load and a preset load;
and determining the initial opening degree of an electronic expansion valve of the air conditioning system according to the difference value between the room load and the preset load.
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