CN117073179A - Purifying control method for room air conditioner for cleaning food industry - Google Patents
Purifying control method for room air conditioner for cleaning food industry Download PDFInfo
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- CN117073179A CN117073179A CN202311035339.0A CN202311035339A CN117073179A CN 117073179 A CN117073179 A CN 117073179A CN 202311035339 A CN202311035339 A CN 202311035339A CN 117073179 A CN117073179 A CN 117073179A
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- 235000013305 food Nutrition 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000004140 cleaning Methods 0.000 title claims description 78
- 238000000746 purification Methods 0.000 claims abstract description 75
- 239000000428 dust Substances 0.000 claims abstract description 70
- 238000012544 monitoring process Methods 0.000 claims abstract description 63
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000007664 blowing Methods 0.000 claims description 43
- 238000004364 calculation method Methods 0.000 claims description 42
- 238000004458 analytical method Methods 0.000 claims description 28
- 230000001276 controlling effect Effects 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 230000003749 cleanliness Effects 0.000 claims description 21
- 230000001580 bacterial effect Effects 0.000 claims description 17
- 241000894006 Bacteria Species 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000012937 correction Methods 0.000 claims description 8
- 238000011109 contamination Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 3
- 241000233866 Fungi Species 0.000 claims 1
- 239000004519 grease Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001914 filtration Methods 0.000 abstract description 8
- 244000005700 microbiome Species 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 3
- 238000004887 air purification Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 238000004378 air conditioning Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000003631 expected effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
-
- 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
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/39—Monitoring filter performance
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
-
- 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
-
- 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
- F24F2110/20—Humidity
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioner purification control, and particularly discloses a method for controlling air conditioner purification of a clean room in the food industry, which comprises the following steps: the invention further optimizes the control method of the purifying air conditioner, improves the intelligent control level of the purifying air conditioner, improves the purifying degree of the purifying air conditioner on the aspects of an air circulation system, a self-purifying system and the like, is beneficial to effectively removing pollutants such as microorganisms, dust, particles, harmful gases and the like in the air, and obtains reasonable self-purifying time by utilizing the self-purifying degree monitoring so as to achieve the optimal self-purifying effect, further ensure the air filtering degree, reduce the pollution risk of foods, improve the overall quality of the foods and avoid the loss of enterprises caused by the food quality problem.
Description
Technical Field
The invention relates to the technical field of air conditioner purification control, in particular to a clean room air conditioner purification control method for the food industry.
Background
The clean room for the food industry is a special room or area designed and built for meeting the cleanliness requirements of food production and processing environments, provides a high-cleanliness environment for food production and processing, ensures the sanitary quality and safety of the food, and directly relates to the health of people, so that the air quality needs to be strictly controlled in the production and processing links of the food, the pollution and influence of microorganisms, bacteria, dust, particles and other pollutants in the air on the food or production equipment are avoided, the quality of the food can be improved, the cleanliness of the production environment can be improved, the pollution risk to the food is reduced, and therefore, the air purification control method of the air conditioner needs to be further optimized, and the air purification degree of the room for the food industry is improved.
Today, there are also some drawbacks in terms of air purification control, in particular in the following several aspects: (1) At present, air-conditioning purification of a room for food industry is more important to air filtering effect, control over indoor air circulation is ignored, for example, according to the air-conditioning purification and the air-conditioning purification, the air-conditioning purification and the air-conditioning purification can directly influence indoor air circulation, unreasonable indoor air circulation can cause adverse effects on filtration and air-conditioning purification, fresh air which is introduced cannot be guaranteed to be uniformly distributed in each indoor corner, indoor dirty air can be fully replaced, effective air purification cannot be achieved, and further pollution can be caused to food.
(2) The self-cleaning system of the current purifying air conditioner is not perfect enough, and is mainly characterized in that the self-cleaning function of the self-control self-cleaning system is not intelligent enough, the self-cleaning degree cannot be monitored, for example, the dust deposition amount on the surface of a filter screen and the self-cleaning time interval are used for self-cleaning degree monitoring, so that reasonable self-cleaning time is obtained, the optimal self-cleaning effect is achieved, the self-cleaning function of the purifying air conditioner is an important component of air purification, the self-cleaning effect cannot be expected due to neglect of the self-cleaning degree monitoring, the air filtering degree is further influenced, the air purification cannot reach a target result, even the indoor air is reversely polluted, and the sanitary quality of food is threatened.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a purifying control method for an air conditioner of a clean room in the food industry, which can effectively solve the problems related to the background art.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides a purifying control method of a room air conditioner for food industry cleaning, which comprises the following steps: step one, monitoring and counting room basic information: basic information of a clean room of the target food industry is monitored, and the clean room of the target food industry is recorded as a designated clean room.
Step two, indoor temperature and humidity control and adjustment: according to the type of the placed food, and analyzing the temperature regulation demand index and the humidity regulation demand index of the specified clean room, thereby controlling and adjusting the temperature and the humidity in the specified clean room.
Step three, controlling and adjusting an air circulation mode: and (3) identifying and positioning the food placement position of the designated clean room, and calculating the air circulation regulation and control demand index in the designated clean room, thereby controlling and regulating the indoor air circulation mode.
Step four, evaluating the indoor air cleanliness: dividing the appointed purifying room with a set vertical distribution interval to obtain each layer of air monitoring area, analyzing the bacterial content and the dust content of each layer of air monitoring area, comprehensively evaluating the indoor air cleanliness of the appointed purifying room, and adjusting and controlling a fresh air system of the purifying air conditioner.
Step five, evaluating the clean degree of the purified air conditioner: and monitoring and analyzing the dust content on the surface of the purifying air conditioner filter screen, calculating the self-cleaning requirement index of the purifying air conditioner in the appointed purifying room, and performing self-cleaning control on the purifying air conditioner.
As a further method, the basic information of the clean room of the target food industry is monitored, and the specific analysis process is as follows: and acquiring the space volume of the appointed purified room, and respectively monitoring the room temperature and the room humidity of the appointed purified room in real time through a temperature sensor and a humidity sensor to obtain the room real-time temperature Q and the room real-time humidity K.
As a further method, the analysis designates a temperature regulation demand index of the clean room, and the specific analysis process is as follows: the method comprises the steps of obtaining the types of the placed foods in a specified purifying room, obtaining the water content, the sugar content and the oil content of the placed foods by matching from a food industry information base, and obtaining the required placing space temperature corresponding to the water content, the sugar content and the oil content of the placed foods from the food industry information base.
The temperature regulation and control demand index alpha of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:wherein Q is Water and its preparation method 、Q Sugar And Q Oil (oil) The required storage space temperature corresponding to the water content, sugar content and fat content of the food is expressed, and the Δq is expressed as the set allowable deviation temperature.
As a further method, the humidity control requirement index of the specified clean room comprises the following specific analysis processes: and obtaining the required placing space humidity corresponding to the water content, sugar content and fat content of the placed food from the food industry information base.
The humidity regulation and control demand index beta of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein K is Water and its preparation method 、K Sugar And K Oil (oil) Respectively expressed as the moisture content, sugar content and fat content of the food, and the required placing space humidity, delta K Water and its preparation method 、ΔK Sugar And DeltaK Oil (oil) The humidity of the allowable deviation corresponding to the set water content, sugar content and fat content is shown.
As a further method, the control and adjustment of the temperature and humidity in the designated clean room is performed by the following specific analysis processes: and matching the temperature regulation and control requirement index of the appointed purification room with a reference temperature regulation and control value corresponding to the set purification air conditioner regulation and control temperature in each temperature regulation and control requirement index range to obtain the temperature regulation and control value of the purification air conditioner to which the appointed purification room belongs.
And similarly, matching the humidity regulation and control demand index of the appointed purified room with the reference humidity regulation and control value corresponding to the set humidity regulation and control humidity of the purified air conditioner in the range of each humidity regulation and control demand index to obtain the humidity regulation and control value of the purified air conditioner to which the appointed purified room belongs, thereby controlling and regulating the temperature and the humidity of the appointed purified room.
As a further method, the specific analysis process of the air circulation regulation demand index in the specified clean room is as follows: scanning the indoor space of the appointed purification room, establishing a three-dimensional model of the indoor space, marking the position of the purification air conditioner and the food placement position, thereby obtaining the distance between the center point of the food placement position and the center point of the blowing panel of the purification air conditioner, and marking the distance as the food placement interval distance L, and obtaining the optimal distance L between the purification air conditioner and the placed food in the appointed purification room from the food industry information base 0 Comprehensive calculation of blowing speed regulation and control demand index L of specified clean room Is required to The calculation formula is as follows:where Δl is denoted as the set allowable deviation distance and σ is denoted as the set distance influencing factor.
Monitoring the opening and closing angles of the panel blades corresponding to the purifying air conditioner of the appointed purifying room, thereby constructingDesignating a blowing reference plane corresponding to a purifying air conditioner of a purifying room, constructing a connecting line of a center point of a food placement position and a center point of a blowing panel of the purifying air conditioner, obtaining an included angle between a blowing direction of the purifying air conditioner and the food placement position, recording the included angle as a food blowing deviation angle theta, and obtaining an optimal blowing angle theta of the purifying air conditioner from a food industry information base 0 Comprehensive calculation of blowing angle regulation and control demand index theta of specified purified room Is required to The calculation formula is as follows:where Δθ is represented as a set allowable deviation angle, and ζ is represented as a set deviation angle correction parameter.
The influence degree value of the unit deviation distance is obtained, the influence degree value of the unit deviation angle is obtained, the air circulation regulation and control requirement index χ of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively expressed as the duty weight to which the set distance and angle belong.
As a further method, the indoor air circulation mode is controlled and regulated, and the specific analysis process is as follows: acquiring an air circulation regulation and control demand index threshold value from a food industry information base, comparing the air circulation regulation and control demand index of the appointed purified room with the air circulation regulation and control demand index threshold value, and if the air circulation regulation and control demand index is larger than the air circulation regulation and control demand index threshold value, carrying out air circulation regulation and control on the appointed purified room.
As a further method, the bacteria content and the dust content of each layer of air monitoring area are analyzed, and the specific analysis process is as follows: monitoring bacterial content in air monitoring areas of each layerAnd obtaining the maximum permissible bacterial content of the space where the food is placed from the food industry information base>The bacterial pollution degree index gamma of the appointed clean room is comprehensively calculated, and the calculation formula is as follows: />Where j is denoted as the number of each layer of air-monitoring areas, j=1, 2, 3.
Monitoring the dust content of air monitoring areas of each layerAnd obtaining the maximum allowable content of the space dust particles belonging to food placement from the food industry information base>The dust pollution degree index eta of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:
as a further method, the specific analysis process of the indoor air cleanliness of the designated clean room is as follows: according to the bacterial pollution degree index and the dust pollution degree index of the appointed purified room, comprehensively calculating the indoor air cleanliness of the appointed purified roomThe calculation formula is as follows: />Wherein->And->Expressed as weight ratios of the set bacterial contamination level and the dust contamination level, respectively.
As a further method, the self-cleaning requirement index of the purifying air conditioner in the designated purifying room is calculated, and the self-cleaning control is carried out on the purifying air conditioner, and the specific process is as follows: monitoring points are distributed on the surface of the purifying air conditioner filter screen, and the surface dust content H of each monitoring point is counted q Comprehensive calculation of the cleaning index of the dust content of the purified air conditionerThe calculation formula is as follows: />Wherein DeltaH is expressed as a set monitoring point allowable deviation dust content, v Dust and dust collector Expressed as a set dust content correction factor, q is expressed as the number of each monitoring point, q=1, 2, 3.
Monitoring and counting respective clean program start time nodes of the clean air conditioner, thereby monitoring a current time interval N from adjacent self-cleaning program start time nodes of the clean air conditioner Real world The self-cleaning time demand clean index lambda of the purified air conditioner is comprehensively calculated, and the calculation formula is as follows:wherein N is 0 The optimal self-cleaning interval time length of the purifying air conditioner is shown as upsilon Time of day Indicated as the set self-cleaning time correction factor.
The self-cleaning requirement index tau of the purifying air conditioner in the appointed purifying room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively expressed as the set dust content and the duty ratio weight of the self-cleaning time.
And extracting the self-cleaning requirement index threshold value of the purifying air conditioner from the food industry information base, comparing the self-cleaning requirement index of the purifying air conditioner with the self-cleaning requirement index threshold value, and if the self-cleaning requirement index of the purifying air conditioner is higher than the self-cleaning requirement index threshold value, feeding back and displaying the self-cleaning requirement index of the purifying air conditioner, and starting the self-cleaning function of the purifying air conditioner.
Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:
(1) The invention further optimizes the control method of the purifying air conditioner, improves the intelligent control level of the purifying air conditioner, improves the purifying degree of the purifying air conditioner on indoor air from the aspects of an air circulation system, a self-cleaning system and the like, is beneficial to effectively removing pollutants such as microorganisms, dust, particles, harmful gases and the like in the air, reduces the pollution risk of food, improves the overall quality of the food, and avoids the loss of enterprises caused by the food quality problem.
(2) According to the invention, the air blowing angle and the air blowing speed of the purifying air conditioner are adjusted through the purifying air conditioner position and the food placing position, so that indoor air circulation achieves the expected effect, the filtering and purification of air are further facilitated, the introduced fresh air is ensured to be uniformly distributed at all corners of the room, the indoor polluted air is fully replaced, the local pollution of the indoor air caused by the fact that the indoor air cannot be completely purified due to insufficient air circulation is avoided, meanwhile, the uniformity of indoor temperature and humidity is ensured, and the food production quality is improved.
(3) According to the invention, the indoor cleanliness is further analyzed by monitoring the bacteria and dust content of the clean room in the food industry, so that the purification strength of the purification air conditioner is controlled, bacteria and dust are main components of air pollution, the pollution index of air can be effectively reduced by performing targeted air purification, the air purification achieves the optimal effect, the food is prevented from being polluted by bacteria and dust, and meanwhile, the food production environment is ensured to meet the specified requirements by controlling the bacteria and dust content in the room, and the safety of the food is ensured.
(4) According to the invention, the self-cleaning degree is monitored through the dust deposition amount on the surface of the filter screen and the self-cleaning time interval, so that reasonable self-cleaning time is obtained, the optimal self-cleaning effect is achieved, the air filtering degree is further ensured, the indoor air is ensured to be purified to reach the expected target, the reverse pollution of dust and microorganisms on the filter screen to the indoor air is avoided, the sanitary quality of food is ensured, meanwhile, the purification quality of the purified air conditioner can be maintained by effectively performing self-cleaning in time, and the service life of the purified air conditioner is prolonged.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a flow chart of the method steps of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, the present invention provides a purifying control method for a clean room air conditioner in the food industry, comprising: step one, monitoring and counting room basic information: basic information of a clean room of the target food industry is monitored, and the clean room of the target food industry is recorded as a designated clean room.
Specifically, the basic information of the clean room of the target food industry is monitored, and the specific analysis process is as follows: and acquiring the space volume of the appointed purified room, and respectively monitoring the room temperature and the room humidity of the appointed purified room in real time through a temperature sensor and a humidity sensor to obtain the room real-time temperature Q and the room real-time humidity K.
It should be explained that the spatial volume of the clean room can be obtained by modeling the space with a three-dimensional scanner.
Step two, indoor temperature and humidity control and adjustment: according to the type of the placed food, and analyzing the temperature regulation demand index and the humidity regulation demand index of the specified clean room, thereby controlling and adjusting the temperature and the humidity in the specified clean room.
Specifically, the analysis designates a temperature regulation demand index of the clean room, and the specific analysis process is as follows: the method comprises the steps of obtaining the types of the placed foods in a specified purifying room, obtaining the water content, the sugar content and the oil content of the placed foods by matching from a food industry information base, and obtaining the required placing space temperature corresponding to the water content, the sugar content and the oil content of the placed foods from the food industry information base.
The temperature regulation and control demand index alpha of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:wherein Q is Water and its preparation method 、Q Sugar And Q Oil (oil) The required storage space temperature corresponding to the water content, sugar content and fat content of the food is expressed, and the Δq is expressed as the set allowable deviation temperature.
Further, the humidity control requirement index of the specified purified room comprises the following specific analysis processes: and obtaining the required placing space humidity corresponding to the water content, sugar content and fat content of the placed food from the food industry information base.
The humidity regulation and control demand index beta of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein K is Water and its preparation method 、K Sugar And K Oil (oil) Respectively expressed as water to which the placed food belongsThe humidity, delta K of the required placing space corresponding to the sugar content and the fat content Water and its preparation method 、ΔK Sugar And DeltaK Oil (oil) The humidity of the allowable deviation corresponding to the set water content, sugar content and fat content is shown.
Further, the control and adjustment of the temperature and the humidity in the appointed clean room comprises the following specific analysis processes: and matching the temperature regulation and control requirement index of the appointed purification room with a reference temperature regulation and control value corresponding to the set purification air conditioner regulation and control temperature in each temperature regulation and control requirement index range to obtain the temperature regulation and control value of the purification air conditioner to which the appointed purification room belongs.
And similarly, matching the humidity regulation and control demand index of the appointed purification room with the reference humidity regulation and control value corresponding to the set purification air conditioner regulation and control humidity in the range of each humidity regulation and control demand index to obtain the humidity regulation and control value of the purification air conditioner to which the appointed purification room belongs, thereby controlling and regulating the temperature and the humidity of the appointed purification room.
Step three, controlling and adjusting an air circulation mode: and (3) identifying and positioning the food placement position of the designated clean room, and calculating the air circulation regulation and control demand index in the designated clean room, thereby controlling and regulating the indoor air circulation mode.
Specifically, the air circulation regulation and control requirement index in the specified purification room comprises the following specific analysis processes: scanning the indoor space of the appointed purification room, establishing a three-dimensional model of the indoor space, marking the position of the purification air conditioner and the food placement position, thereby obtaining the distance between the center point of the food placement position and the center point of the blowing panel of the purification air conditioner, and marking the distance as the food placement interval distance L, and obtaining the optimal distance L between the purification air conditioner and the placed food in the appointed purification room from the food industry information base 0 Comprehensive calculation of blowing speed regulation and control demand index L of specified clean room Is required to The calculation formula is as follows:where Δl is denoted as the set allowable deviation distance and σ is denoted as the set distance influencing factor.
Monitoring the opening and closing angles of the panel blades corresponding to the purifying air conditioner of the appointed purifying room, constructing a blowing reference plane corresponding to the purifying air conditioner of the appointed purifying room, constructing a connecting line straight line of a center point of a food placement position and a center point of a blowing panel of the purifying air conditioner, obtaining an included angle between the blowing direction of the purifying air conditioner and the food placement position, recording the included angle as a food blowing deviation angle theta, and obtaining the optimum blowing angle theta of the purifying air conditioner from a food industry information base 0 Comprehensive calculation of blowing angle regulation and control demand index theta of specified purified room Is required to The calculation formula is as follows:where Δθ is represented as a set allowable deviation angle, and ζ is represented as a set deviation angle correction parameter.
The influence degree value of the unit deviation distance is obtained, the influence degree value of the unit deviation angle is obtained, the air circulation regulation and control requirement index χ of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively expressed as the duty weight to which the set distance and angle belong.
It should be explained that the above-mentioned food deviation angle of blowing means the contained angle of perpendicular level purification air conditioner direction of blowing and the relative position of placing of food, because the direction of blowing of purification air conditioner includes that the level is blown and is vertically blown, different directions of blowing can form a plurality of contained angles with the relative position of placing of food, calculate the deviation angle from the perpendicular level and can reflect the relative position on purification air conditioner and the food space more accurately, make the air flow direction more clear.
Further, the control and adjustment of the indoor air circulation mode comprises the following specific analysis processes: acquiring an air circulation regulation and control demand index threshold value from a food industry information base, comparing the air circulation regulation and control demand index of the appointed purified room with the air circulation regulation and control demand index threshold value, and if the air circulation regulation and control demand index is larger than the air circulation regulation and control demand index threshold value, carrying out air circulation regulation and control on the appointed purified room.
It should be explained that, the above-mentioned air circulation control is performed on the designated purified room, and the specific analysis process is as follows: and matching the air blowing speed regulation and control requirement index of the appointed purifying room with a reference air blowing speed regulation and control value corresponding to the set air blowing speed regulation and control requirement index range of the purifying air conditioner, and obtaining the air blowing speed regulation and control value of the purifying air conditioner to which the appointed purifying room belongs.
And in the same way, the air blowing angle regulation and control requirement index of the appointed purification room is matched with the reference air blowing angle regulation and control value corresponding to the set air blowing angle regulation and control requirement index range of the purification air conditioner in each air blowing angle regulation and control requirement index range, so that the air blowing angle regulation and control value of the purification air conditioner to which the appointed purification room belongs is obtained, and therefore the air blowing speed and the air blowing angle of the appointed purification room are controlled and regulated.
In a specific embodiment, the air blowing angle and the air blowing speed of the purifying air conditioner are adjusted through the position of the purifying air conditioner and the food placement position, so that indoor air circulation achieves the expected effect, the filtering and purification of air are further facilitated, the introduced fresh air is guaranteed to be uniformly distributed at each indoor corner, the indoor polluted air is fully replaced, the local pollution of the indoor air caused by the fact that the indoor air cannot be completely purified due to insufficient air circulation is avoided, meanwhile, the uniformity of indoor temperature and humidity is guaranteed, and the food production quality is improved.
Step four, evaluating the indoor air cleanliness: dividing the appointed purifying room with a set vertical distribution interval to obtain each layer of air monitoring area, analyzing the bacterial content and the dust content of each layer of air monitoring area, comprehensively evaluating the indoor air cleanliness of the appointed purifying room, and adjusting and controlling a fresh air system of the purifying air conditioner.
It should be explained that, above-mentioned indoor air cleanliness factor is used for controlling the execution of new trend system, new trend system reaches the air-purifying through replacing indoor air, improve indoor air quality's effect, if indoor air cleanliness factor is less than the air cleanliness factor threshold value of settlement, then open new trend system and replace indoor air, match the indoor air cleanliness factor of appointed clean room and the clean air conditioner of settlement at the corresponding reference new trend system opening time of each indoor air cleanliness factor scope simultaneously, obtain the required opening time of new trend system, carry out real-time control to new trend system through monitoring indoor air crystallization, can guarantee the clean degree in room, improve the efficiency of clean indoor air, avoid opening new trend system always and lead to the waste of resource, and also prolonged the life of clean air conditioner.
Specifically, the bacteria content and the dust content of each layer of air monitoring area are analyzed, and the specific analysis process is as follows: monitoring bacterial content in air monitoring areas of each layerAnd obtaining the maximum permissible bacterial content of the space where the food is placed from the food industry information base>The bacterial pollution degree index gamma of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:where j is denoted as the number of each layer of air-monitoring areas, j=1, 2, 3.
Monitoring the dust content of air monitoring areas of each layerAnd obtaining the maximum allowable content of the space dust particles belonging to food placement from the food industry information base>Comprehensive computing assignmentThe dust pollution degree index eta of the purified room has the following calculation formula:
further, the specific analysis process of the indoor air cleanliness of the specified clean room is as follows: according to the bacterial pollution degree index and the dust pollution degree index of the appointed purified room, comprehensively calculating the indoor air cleanliness of the appointed purified roomThe calculation formula is as follows: />Wherein->And->Expressed as weight ratios of the set bacterial contamination level and the dust contamination level, respectively.
In a specific embodiment, the indoor cleanliness is further analyzed by monitoring the bacteria and dust content of a clean room in the food industry, so that the purification strength of the purification air conditioner is controlled, bacteria and dust are main components of air pollution, the pollution index of the air can be effectively reduced by pertinently purifying the air, the air purification achieves the optimal effect, the food is prevented from being polluted by the bacteria and dust, and meanwhile, the food production environment can be ensured to meet the specified requirements by controlling the bacteria and dust content in the room, so that the safety of the food is ensured.
It should be further explained that the bacteria content and the dust content of the indoor air are monitored by an air bacteria tester and a laser dust monitor.
Step five, evaluating the clean degree of the purified air conditioner: and monitoring and analyzing the dust content on the surface of the purifying air conditioner filter screen, calculating the self-cleaning requirement index of the purifying air conditioner in the appointed purifying room, and performing self-cleaning control on the purifying air conditioner.
Specifically, the self-cleaning requirement index of the purifying air conditioner in the appointed purifying room is calculated, and the self-cleaning control is carried out on the purifying air conditioner, and the specific process is as follows: monitoring points are distributed on the surface of the purifying air conditioner filter screen, and the surface dust content H of each monitoring point is counted q Comprehensive calculation of the cleaning index of the dust content of the purified air conditionerThe calculation formula is as follows:wherein DeltaH is expressed as a set monitoring point allowable deviation dust content, v Dust and dust collector Expressed as a set dust content correction factor, q is expressed as the number of each monitoring point, q=1, 2, 3.
Monitoring and counting respective clean program start time nodes of the clean air conditioner, thereby monitoring a current time interval N from adjacent self-cleaning program start time nodes of the clean air conditioner Real world The self-cleaning time demand clean index lambda of the purified air conditioner is comprehensively calculated, and the calculation formula is as follows:wherein N is 0 The optimal self-cleaning interval time length of the purifying air conditioner is shown as upsilon Time of day Indicated as the set self-cleaning time correction factor.
The self-cleaning requirement index tau of the purifying air conditioner in the appointed purifying room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively expressed as the set dust contentAnd the self-cleaning time belongs to the duty ratio weight.
And extracting the self-cleaning requirement index threshold value of the purifying air conditioner from the food industry information base, comparing the self-cleaning requirement index of the purifying air conditioner with the self-cleaning requirement index threshold value, and if the self-cleaning requirement index of the purifying air conditioner is higher than the self-cleaning requirement index threshold value, feeding back and displaying the self-cleaning requirement index of the purifying air conditioner, and starting the self-cleaning function of the purifying air conditioner.
It should be explained that the arrangement of the monitoring points on the surface of the filter screen can reflect the dust distribution position on the surface of the filter screen more comprehensively and count the dust content on the surface of the filter screen more accurately.
It should be further explained that the dust content of each monitoring point is monitored by a dust sensor.
In a specific embodiment, the self-cleaning degree is monitored through the dust deposition amount on the surface of the filter screen and the self-cleaning time interval, so that reasonable self-cleaning time is obtained, the optimal self-cleaning effect is achieved, the air filtering degree is further guaranteed, the indoor air is ensured to be purified to reach the expected target, the dust and microorganisms on the filter screen are prevented from reversely polluting the indoor air, the sanitary quality of food is ensured, meanwhile, the purification quality of the purified air conditioner can be maintained by effectively performing self-cleaning in time, and the service life of the purified air conditioner is prolonged.
The invention further optimizes the control method of the purifying air conditioner, improves the intelligent control level of the purifying air conditioner, improves the purifying degree of the purifying air conditioner on indoor air from the aspects of an air circulation system, a self-cleaning system and the like, is beneficial to effectively removing pollutants such as microorganisms, dust, particles, harmful gases and the like in the air, reduces the pollution risk of food, improves the overall quality of the food, and avoids the loss of enterprises caused by the food quality problem.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The room air conditioner purifying control method for the food industry cleaning is characterized by comprising the following steps:
step one, monitoring and counting room basic information: monitoring basic information of a clean room of the target food industry, and recording the clean room of the target food industry as a designated clean room;
step two, indoor temperature and humidity control and adjustment: according to the type of the placed food, analyzing the temperature regulation demand index and the humidity regulation demand index of the appointed clean room, and controlling and regulating the temperature and the humidity in the appointed clean room;
step three, controlling and adjusting an air circulation mode: the method comprises the steps of marking and positioning the food placement position of a specified purifying room, and calculating an air circulation regulation and control demand index in the specified purifying room, so that the indoor air circulation mode is controlled and regulated;
step four, evaluating the indoor air cleanliness: dividing a designated purifying room at set vertical distribution intervals to obtain air monitoring areas of each layer, analyzing the bacterial content and the dust content of the air monitoring areas of each layer, comprehensively evaluating the indoor air cleanliness of the designated purifying room, and adjusting and controlling a fresh air system of the purifying air conditioner;
step five, evaluating the clean degree of the purified air conditioner: and monitoring and analyzing the dust content on the surface of the purifying air conditioner filter screen, calculating the self-cleaning requirement index of the purifying air conditioner in the appointed purifying room, and performing self-cleaning control on the purifying air conditioner.
2. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the basic information of the clean room of the target food industry is monitored, and the specific analysis process is as follows: and acquiring the space volume of the appointed purified room, and respectively monitoring the room temperature and the room humidity of the appointed purified room in real time through a temperature sensor and a humidity sensor to obtain the room real-time temperature Q and the room real-time humidity K.
3. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the analysis designates a temperature regulation demand index of a purified room, and the specific analysis process comprises the following steps:
obtaining the types of the placed foods in the specified purifying room, matching the water content, the sugar content and the oil content of the placed foods from a food industry information base, and obtaining the required placing space temperature corresponding to the water content, the sugar content and the oil content of the placed foods from the food industry information base;
the temperature regulation and control demand index alpha of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:wherein Q is Water and its preparation method 、Q Sugar And Q Oil (oil) The required storage space temperature corresponding to the water content, sugar content and fat content of the food is expressed, and the Δq is expressed as the set allowable deviation temperature.
4. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the humidity regulation and control demand index of the appointed purification room comprises the following specific analysis processes:
acquiring the water content, sugar content and grease content of the placed food from a food industry information base, and corresponding to the required placing space humidity;
the humidity regulation and control demand index beta of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein K is Water and its preparation method 、K Sugar And K Oil (oil) Respectively expressed as the moisture content, sugar content and fat content of the food, and the required placing space humidity, delta K Water and its preparation method 、ΔK Sugar And DeltaK Oil (oil) Respectively expressed as the set water contentThe amount of sugar and the amount of fat contained are corresponding to the allowable deviation humidity.
5. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the specific analysis process of the method for controlling and adjusting the temperature and the humidity in the appointed purification room comprises the following steps: matching the temperature regulation and control requirement index of the appointed purification room with a reference temperature regulation and control value corresponding to the set purification air conditioner regulation and control temperature in each temperature regulation and control requirement index range to obtain a temperature regulation and control value of the purification air conditioner to which the appointed purification room belongs;
and similarly, matching the humidity regulation and control demand index of the appointed purified room with the reference humidity regulation and control value corresponding to the set humidity regulation and control humidity of the purified air conditioner in the range of each humidity regulation and control demand index to obtain the humidity regulation and control value of the purified air conditioner to which the appointed purified room belongs, thereby controlling and regulating the temperature and the humidity of the appointed purified room.
6. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the specific analysis process of the air circulation regulation and control demand index in the appointed purification room is as follows:
scanning the indoor space of the appointed purification room, establishing a three-dimensional model of the indoor space, marking the position of the purification air conditioner and the food placement position, thereby obtaining the distance between the center point of the food placement position and the center point of the blowing panel of the purification air conditioner, and marking the distance as the food placement interval distance L, and obtaining the optimal distance L between the purification air conditioner and the placed food in the appointed purification room from the food industry information base 0 Comprehensive calculation of blowing speed regulation and control demand index L of specified clean room Is required to The calculation formula is as follows:wherein Δl is expressed as a set allowable deviation distance and σ is expressed as a set distance influencing factor;
the opening and closing angles of the panel blades corresponding to the purifying air conditioner of the appointed purifying room are monitored,constructing a blowing reference plane corresponding to the purifying air conditioner of the appointed purifying room, constructing a connecting straight line of a center point of a food placement position and a center point of a blowing panel of the purifying air conditioner, obtaining an included angle between the blowing direction of the purifying air conditioner and the food placement position, recording the included angle as a food blowing deviation angle theta, and obtaining the optimum blowing angle theta of the purifying air conditioner from a food industry information base 0 Comprehensive calculation of blowing angle regulation and control demand index theta of specified purified room Is required to The calculation formula is as follows:wherein delta theta is expressed as a set allowable deviation angle, and xi is expressed as a set unit deviation angle regulation demand factor;
the air circulation regulation and control demand index χ of the appointed purified room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively expressed as the duty weight to which the set distance and angle belong.
7. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the indoor air circulation mode is controlled and regulated, and the specific analysis process is as follows:
acquiring an air circulation regulation and control demand index threshold value from a food industry information base, comparing the air circulation regulation and control demand index of the appointed purified room with the air circulation regulation and control demand index threshold value, and if the air circulation regulation and control demand index is larger than the air circulation regulation and control demand index threshold value, carrying out air circulation regulation and control on the appointed purified room.
8. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the bacteria content and the dust content of each layer of air monitoring area are analyzed, and the specific analysis process is as follows:
monitoring the bacterial content P of the air monitoring area of each layer j Bacteria (fungus) And obtaining the permissible maximum content of bacteria in the space where food is placed from the food industry information baseThe bacterial pollution degree index gamma of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:where j is represented as the number of each layer of air-monitoring areas, j=1, 2,3,..m, m is represented as the total number of air-monitoring areas;
monitoring the dust content P of the air monitoring area of each layer j Dust and dust collector And obtaining the allowable maximum content of the space dust particles of the food placement from the food industry information baseThe dust pollution degree index eta of the appointed clean room is comprehensively calculated, and the calculation formula is as follows:
9. the method for controlling the purification of a clean room air conditioner for the food industry according to claim 8, wherein: the specific analysis process of the indoor air cleanliness of the appointed purification room is as follows:
according to the bacterial pollution degree index and the dust pollution degree index of the appointed purified room, comprehensively calculating the indoor air cleanliness of the appointed purified roomThe calculation formula is as follows: />Wherein->And->Expressed as weight ratios of the set bacterial contamination level and the dust contamination level, respectively.
10. The method for controlling the purification of a clean room air conditioner for the food industry according to claim 1, wherein: the self-cleaning requirement index of the purification air conditioner in the appointed purification room is calculated, and the self-cleaning control is carried out on the purification air conditioner, and the specific process is as follows:
monitoring points are distributed on the surface of the purifying air conditioner filter screen, and the surface dust content H of each monitoring point is counted q Comprehensive calculation of the cleaning index of the dust content of the purified air conditionerThe calculation formula is as follows: />Wherein DeltaH is expressed as a set monitoring point allowable deviation dust content, v Dust and dust collector Expressed as a set dust content correction factor, q is expressed as the number of each monitoring point, q=1, 2,3,..k, k is expressed as the total number of monitoring points;
monitoring and counting respective clean program start time nodes of the clean air conditioner, thereby extracting a time interval N of neighboring self-cleaning program start time nodes of the clean air conditioner from a current time node Real world The self-cleaning time demand clean index lambda of the purified air conditioner is comprehensively calculated, and the calculation formula is as follows:wherein N is 0 The optimal self-cleaning interval time length of the purifying air conditioner is shown as upsilon Time of day Expressed as a set self-cleaning time correction factor;
the self-cleaning requirement index tau of the purifying air conditioner in the appointed purifying room is comprehensively calculated, and the calculation formula is as follows:wherein->And->Respectively representing the set dust content and the self-cleaning time as the duty ratio weight;
and extracting the self-cleaning requirement index threshold value of the purifying air conditioner from the food industry information base, comparing the self-cleaning requirement index of the purifying air conditioner with the self-cleaning requirement index threshold value, and if the self-cleaning requirement index of the purifying air conditioner is higher than the self-cleaning requirement index threshold value, feeding back and displaying the self-cleaning requirement index of the purifying air conditioner, and starting the self-cleaning function of the purifying air conditioner.
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