CN114454279B - Humidity control system and method - Google Patents
Humidity control system and method Download PDFInfo
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- CN114454279B CN114454279B CN202210085287.7A CN202210085287A CN114454279B CN 114454279 B CN114454279 B CN 114454279B CN 202210085287 A CN202210085287 A CN 202210085287A CN 114454279 B CN114454279 B CN 114454279B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
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Abstract
The utility model relates to the technical field of plate processing, in particular to a humidity control system, which comprises a humidifier and a controller, wherein the controller is respectively connected with a humidity sensor, an input unit and a humidity adjusting actuator, and is used for receiving an input signal of the input unit and a humidity signal of the humidity sensor and outputting the control signal to control the humidity adjusting actuator; a humidity control method for humidity control of a humidity chamber, comprising the steps of: s1, setting a target humidity value; s2, acquiring a detected humidity value; s3, calculating the ratio of the detected humidity value to the target humidity value; s4, determining a control signal according to the ratio; s5, controlling the humidifying actuator according to the control signal; s6, repeatedly executing the steps S2, S3, S4 and S5 according to preset time intervals until the ratio is equal to 1.
Description
Technical Field
The utility model belongs to the technical field of plate processing, and particularly relates to a humidity control system and method for humidity control of a humidity preservation box in a plate balancing process.
Background
In the prior art, the release of formaldehyde in the plate is quickened in a heating way so as to achieve the purpose of balancing the plate, the plate is placed in an insulation box in a specific implementation process, the formaldehyde release is quickened in the insulation box by heating, so that a certain balancing effect is achieved, the plate is subjected to purifying operation in the way, after the plate is heated at a high temperature, the water content in the plate is lower than a normal level, the plate is easy to deform, and the subsequent processing and sales are influenced.
Disclosure of Invention
The utility model provides a humidity control system which aims at solving the problems and comprises a humidifier, a pipeline connected with the humidifier and a humidity preservation box, wherein the pipeline is arranged in the humidity preservation box, the humidifier is arranged on the pipeline, the humidity control system further comprises an input unit, a humidity sensor and a controller, and the controller receives signals of the input unit and the humidity sensor and outputs control signals of the humidifier.
The humidity control system comprises a humidity preservation box and further comprises a controller, wherein the controller is respectively connected with a humidity sensor, an input unit and a humidity adjusting actuator, wherein the humidity sensor is used for acquiring humidity signals in the humidity preservation box, and the controller is used for receiving the input signals of the input unit and the humidity signals of the humidity sensor and outputting the control signals so as to control the humidity adjusting actuator.
Further, the humidifying executor includes the humidifier, and/or circulating fan, the switching value control port of controller passes through the relay and is connected with the humidifier, is used for controlling the humidifier is opened, the analog quantity control port of controller is connected with the humidifier, is used for controlling the unit humidification volume of humidifier, the pipeline setting of humidifier is in the wet preserving incasement lower part and is through the spraying hole that sets up on the pipeline to the wet preserving incasement output water smoke, circulating fan's air outlet sets up the pipeline below, the air intake sets up upper portion in the wet preserving case.
Further, the method comprises the following steps:
s1, setting a target humidity value;
s2, acquiring a detected humidity value;
s3, calculating the ratio of the detected humidity value to the target humidity value;
s4, determining a control signal according to the ratio;
s5, controlling the humidifying actuator according to the control signal;
s6, repeatedly executing the steps S2, S3, S4 and S5 according to preset time intervals until the ratio is equal to 1.
Further, the control signals comprise humidity control signals and/or power control signals, wherein the control signals are used for adjusting the unit humidification amount of the humidifier and/or the output power of the circulating fan, and the humidification amount of the humidifier is the same as the change trend of the output power of the circulating fan;
further, the ratio and the humidification amount of the humidifier satisfy the following relationship:
wherein R represents the ratio, K represents the humidification amount of the humidifier, K max Represents the maximum humidification amount, K of the humidifier i The (0, A) is the accurate control humidification quantity corresponding to the accurate control interval 0 ]Is a coarse control interval, (A) 0 ,+∞]For the precise control interval, the A 0 Is a threshold fitted from historical data.
Further, R.epsilon.A 0 ,+∞],K＝K i The method specifically comprises the following steps:
wherein K is 1 ＞K 2 ＞K 3 ＞K 4 ，A 0 ＜A 1 ＜A 2 ＜A 3 ，i＝1、2、3、4。
Further, when k=k 1 At the corresponding humidity rising rate of V 1 ；
When k=k 2 At the corresponding humidity rising rate of V 2 ；
When k=k 3 At the corresponding humidity rising rate of V 3 ；
When k=k 4 At the corresponding humidity rising rate of V 4 ；
Wherein V is 1 ＞V 2 ＞V 3 ＞V 4 。
Further, the K max 、K 1 、K 2 、K 3 、K 4 The ratio of every two adjacent values satisfies the arithmetic relation, namely:
K max -K 1 ＝K 1 -K 2 +Δ；
K 1 -K 2 ＝K 2 -K 3 +Δ；
K 2 -K 3 ＝K 3 -K 4 +Δ；
where delta is a tolerance determined according to the type, density, thickness of the sheet material.
Further, the ratio and the output power of the circulating fan satisfy the following relation:
wherein R represents the ratio, P represents the output power of the circulating fan, and P e Represents the rated power of a circulating fan, P i For the fine control output power corresponding to the fine control interval, (0, A) 0 ]Is a coarse control interval, (A) 0 ,+∞]For the precise control interval, the A 0 Is a threshold fitted from historical data.
Further, R.epsilon.A 0 ,+∞],P＝P i The method specifically comprises the following steps:
wherein P is 1 ＞P 2 ＞P 3 ＞P 4 ，A 0 ＜A 1 ＜A 2 ＜A 3 ，i＝1、2、3、4。
When p=p 1 At the corresponding humidity rising rate of V 1 ；
When p=p 2 At the corresponding humidity rising rate of V 2 ；
When p=p 3 At the corresponding humidity rising rate of V 3 ；
When p=p 4 At the corresponding humidity rising rate of V 4 ；
Wherein V is 1 ＞V 2 ＞V 3 ＞V 4 。
The P is e 、P 1 、P 2 、P 3 、P 4 The ratio of every two adjacent values satisfies the arithmetic relation, namely:
P e -P 1 ＝P 1 -P 2 +Δ；
P 1 -P 2 ＝P 2 -P 3 +Δ；
P 2 -P 3 ＝P 3 -P 4 +Δ。
where delta is a tolerance determined according to the type, density, thickness of the sheet material.
The utility model has the following beneficial effects: the humidity control system statistical method is characterized in that a target humidity value and a detected humidity value are compared to obtain a ratio, the ratio is taken as a basic factor of control logic, the humidity of a humidifier controlling the flow of a pipeline is controlled, a controller receives a humidity signal, compares and calculates the humidity signal to output a control signal, automatic and real-time humidity control is realized, the humidity control precision in a humidity preservation box can be improved, the possibility of deformation of a plate is reduced, and the effective real-time humidity balance in the plate is ensured.
Drawings
FIG. 1 is a schematic diagram of a humidity control system according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a pipeline structure according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a humidity control method according to an embodiment of the present utility model;
FIG. 4 is a graphical representation of the change in humidification amount for an example of the present utility model;
FIG. 5 is a bar graph representation of output power meter change in an embodiment of the utility model;
description of the drawings: the device comprises a 1-humidity preserving box, a 2-pipeline, a 3-humidifier, a 4-input unit, a 5-humidity sensor, a 6-controller, an 8-circulating fan, a 9-variable frequency pump and a 10-plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The technical means used in the examples are conventional means well known to those skilled in the art unless otherwise indicated.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The board 10 of the present utility model has been studied to include types of particle board, solid board, and laminate, and therefore, according to the analysis of the critical value a 0 With the sheet material 10Factors such as type, density and thickness are related, and in the case of experiments and researches on particle boards, it is found that when A 0 When =0.5, the higher the humidity in the incubator 1, the more strongly the sheet 10 deforms, so when the particle board in the incubator 1 is humidified, a is selected 0 =0.5, and the corresponding coarse control interval is (0, 0.5]Is used in the range of (a), the fine control interval is (0.5, ++ infinity]。
Preferably, the utility model divides the fine control interval into four intervals, including a first fine control interval (A 0 ,A 1 ]A second fine control section (A 1 ,A 2 ]A third fine control section (A 2 ,A 3 ]Fourth fine control section (A 3 , +++, -infinity), in contrast to the three intervals of the prior art, the humidity in the incubator 1 can be controlled more precisely, so that it can reduce the deformation rate of the sheet material 10 while satisfying humidification.
As a preferable solution, the placement mode of the board 10 refers to the application number CN 202121451608.8: the utility model relates to a wood-based material plate airing frame, wherein a plate 10 is arranged on the wood-based material plate airing frame and is in a vertical state, and when humidification operation is required, the requirements are met:
rate of rise of humidity V in incubator 1 1 ＞V 2 ＞V 3 ＞V 4 ；
Humidification amount K of humidifier 3 1 ＞K 2 ＞K 3 ＞K 4 ；
K max -K 1 ＝K 1 -K 2 +Δ；
K 1 -K 2 ＝K 2 -K 3 +Δ；
K 2 -K 3 ＝K 3 -K 4 +Δ。
Output power P of circulation fan 8 1 ＞P 2 ＞P 3 ＞P 4 ；
P e -P 1 ＝P 1 -P 2 +Δ；
P 1 -P 2 ＝P 2 -P 3 +Δ；
P 2 -P 3 ＝P 3 -P 4 +Δ。
The first precise control interval is (A) 0 ,A 1 ]The second precise control interval is (A) 1 ,A 2 ]The third precise control interval is (A) 2 ,A 3 ]The fourth fine control interval is (A) 3 , + -infinity a) of the above-mentioned components, the A is 0 ＜A 1 ＜A 2 ＜A 3 ；
The change trend of the circulating fan 8 and the humidifier 3 is the same, and when humidification operation is performed, the circulating fan is ensured to be:
when the ratio R is within the coarse control range (0, A 0 ]When the humidifier 3 has the greatest humidification amount, the output power of the circulating fan 8 is rated power, and the air at the air outlet is blown into the inner cavity of the humidity preserving box 1 after passing through the pipeline 2 under the pipeline 2 at the air outlet of the circulating fan 8, so that the steam of the pipeline 2 is uniformly distributed into the humidity preserving box 1, the upper part of the vertically placed plate 10 can be uniformly humidified, and the plate positioned in the humidity preserving box 1 can be guaranteed to quickly absorb the steam. The humidity corresponding to the coarse control zone rises rapidly, and the corresponding humidity absorption rate acting on the plate 10 is also relatively rapid.
When the ratio R is within the fine control range (0.5, +++), the humidification amount of the humidifier 3 is gradually smaller at this time, until the output power of the corresponding circulating fan 8 is 0%, the output power of the circulating fan is gradually reduced until the output power of the circulating fan is 0, and through bidirectional control, the board 10 placed vertically is uniformly humidified to achieve the aim of target water content, and meanwhile, the probability of deformation and cracking of the board 10 is reduced.
As shown in fig. 1 to 5, a humidity control system includes a humidifier 3, a pipe 2 connected to the humidifier 3, and a humidification tank 1, wherein the pipe 2 is disposed in the humidification tank 1, the control system further includes an input unit 4, a humidity sensor 5, and a controller 6, and the controller 6 receives signals from the input unit 4 and the humidity sensor 5 and outputs control signals of the humidifier 3.
The humidification amount of the humidifier 3 can be controlled by a PLC, the output power of the humidifier 3 is controlled by controlling the duty ratio, the humidification amount is controlled, the influence of the high humidity environment in the humidification tank 1 is avoided, and the control precision, the durability and the like of the humidification tank can be ensured; the input unit 4 can adopt conventional human body input equipment to input a target humidity value to the controller 6, the humidity sensor 5 detects the current humidity value in the humidity preservation box 1, the detection result is sent to the controller 6, the controller 6 sends a control signal to the humidifier 3 to control the output power of the humidifier 3 so as to achieve the purpose of controlling the humidification amount, the pipeline 2 is positioned in the humidity preservation box 1, the pressurized spraying holes arranged on the pipeline 2 spray water mist into the bin, so that the duration of the whole humidity control process is shortened, namely the duration of the balance of the plate 10 is shortened, and the improvement of the productivity is facilitated; the controller 6 adopts a programmable logic controller 6, namely a PLC, based on the basic parameters and control logic of the system, the characteristics of reliability can be fully exerted by adopting the PLC, and the overall robustness of the system is improved.
The humidifier 3 can adopt an industrial humidifier 3, the working principle of the high-pressure micro-mist humidifier 3 is that the high-pressure plunger pump is used for increasing the water pressure to 4-7Mpa, and pressurized water is atomized by a professional nozzle through a high-pressure-resistant conveying pipeline to generate micro-mist particles of 3-15 mu m micro-mist particles, so that the micro-mist particles can quickly absorb heat from air to complete vaporization and diffusion, and the purposes of air humidification and cooling are achieved.
An ultrasonic humidifier can be adopted, and the humidification amount can be controlled by adjusting the power; the ultrasonic humidifier only needs to be clean in dustproof filter screen and the spray head is not blocked, and the humidification amount can be increased by controlling the mist amount switch of the ultrasonic humidifier to rotate and increase through the PLC.
Such as new generation ultrasonic humidification equipment, advanced integrated machine core is adopted; an integrated modular design; the stable double-water-level automatic control effectively improves the atomization humidification performance of the equipment, ensures that atomized particles are uniformly about 5 microns, and ensures that the energy consumption index of unit humidification amount is reduced to the minimum.
As a preferred method, the humidity control system further comprises a variable frequency pump 9, said variable frequency pump 9 being located on the pipe 2 outside the incubator 1 for delivering and pressurizing the steam.
Preferably, the humidity control system further comprises a circulating fan 8, and the circulating fan 8 is controlled by outputting a signal from the controller 6.
As the preferable scheme, the air outlet of the circulating fan 8 is arranged below the pipeline 2, the air inlet of the circulating fan 8 is arranged on the upper portion of the humidity preserving box 1, the air outlet of the circulating fan 8 is arranged below the pipeline 2, the air flow rate near the pipeline 2 is quickened, the efficiency of steam circulation is quickened further, steam in the humidity preserving box 1 circularly flows between the air inlet and the air outlet, the steam in the whole humidity preserving box 1 flows to form humidification circulation, the even distribution of humidity in the box can be ensured, and the protection of the board 10 from deformation caused by uneven local humidity distribution is facilitated.
The utility model also provides a humidity control method for controlling the humidity of the humidity preserving box 1, which comprises the following steps:
s1, setting a target humidity value;
s2, acquiring a detected humidity value;
s3, calculating the ratio of the detected humidity value to the target humidity value;
s4, presetting a humidity control signal of the humidifier 3 corresponding to the ratio;
s5, determining a humidity control signal of the humidifier 3 according to the calculated ratio, and controlling the humidity of the humidifier 3 through the humidity control signal of the humidifier 3;
s6, repeatedly executing the steps S2, S3, S4 and S5 according to the preset time interval until the ratio is equal to 1.
The input unit 4 is used for setting a target humidity value, the humidity sensor 5 is used for detecting the detected humidity value in the humidity box 1, the two values are transmitted to the controller 6 in a signal transmission mode, the controller 6 calculates the ratio of the detected humidity value to the target humidity value, the ratio reflects the difference between the current humidity and the target humidity, generally, as the balancing operation is carried out, it can be generally expected that the humidity in the humidity box 1 is close to the current relative humidity under the condition that the balancing operation is carried out for the first time, the winter temperature is 18-25 ℃, and the relative humidity is 30-80%; the summer temperature is 23 to 28 ℃ and the relative humidity is 30 to 60%. The meaning represented by the method is obvious that the detected humidity value is greatly different from the target humidity value, and it can be understood that the ratio is equal to the final result of the whole humidity control process, and as the balancing operation is carried out, the humidity in the humidity preservation box 1 reaches the target humidity, namely 100 ℃, the humidity in the humidity preservation box 1 is less in change in the humidity preservation stage, and constant humidity can be realized through a small amount of steam.
The working humidity of the humidity preserving box 1 is generally 60% -120%, and the specific control mode is that the humidity of the humidifier 3 is regulated, so that the flow of steam in the pipeline 2 is controlled, and the rate of the plate 10 absorbing the steam is further controlled.
As a preferred solution, the humidity value is the average value of the humidity values measured at a plurality of measuring points in the humidity preserving box 1, the steam absorption is a process, the air humidity near the pipeline 2 is firstly increased and gradually spread to the whole humidity preserving box 1 along with the time, then a plurality of humidity sensors 5 can be arranged for detecting for the accuracy of the humidity detection, and the humidity sensors 5 are arranged at positions far away from the pipeline 2, so as to obtain the average humidity of a plurality of measuring points, thereby ensuring that the measured humidity is closer to the actual humidity and further providing the accuracy of humidity control.
As a preferred scheme, the ratio is divided into a plurality of grades, the ratio of one grade corresponds to a humidity control signal of the humidifier 3, and for the plate 10, deformation is possibly generated under the humidifying condition, and a stable humidifying state can well protect the plate 10 from deformation or cracking.
Preferably, the ratio and the humidity of the humidifier 3 satisfy the following relationship:
wherein R represents the ratio, K represents the humidity of the humidifier 3, K max Indicating the maximum humidity of the humidifier 3.
At the initial stage of the humidification process, the humidity in the humidification chamber 1 is within the tolerance range of the plate 10 and hardly deforms, at this time, more consideration can be given to save time cost and accelerate the steam absorption rate, so that the steam absorption rate at the initial stage of humidification can be controlled at a higher level, the humidifier 3 reaches the maximum humidity, after the humidification is to a certain extent, the deformation risk of the plate 10 is increased, and at this time, the humidity absorption rate is reduced, so that the plate 10 is protected for guiding humidification.
Preferably, the maximum humidity of the humidifier 3 is 90%.
As a preferred embodiment, step S4 further includes: and presetting a control signal of the circulating fan 8 corresponding to the ratio, wherein the control signal of the circulating fan 8 controls the opening and closing of the circulating fan 8 and the output power.
As a preferable scheme, the ratio and the opening and closing and output power of the circulating fan 8 satisfy the following relationship:
wherein X is n Indicating that the circulating fan 8 is started, X f Represents that the circulating fan 8 is closed, P represents the output power of the circulating fan 8, and P e Indicating the rated power of the circulating fan 8.
The air outlet of the circulating fan 8 is arranged below the pipeline 2 to play a role in accelerating steam distribution, and according to the strategy taking both protection of the plate 10 and shortening of the balancing process as main considerations in the embodiment, the opening, closing and output power control of the circulating fan 8 also adopt the same thought, the circulating fan 8 works at rated power in the initial stage of humidification to output maximum air quantity, the steam output rate is increased, when the humidity possibly influences the deformation of the plate 10, the output power is reduced to reduce the efficiency of steam absorption, the normally open of the circulating fan 8 is necessary, the aim is to ensure the uniform distribution of the humidity in the humidity preservation box 1, avoid the plate 10 from deformation due to uneven surface humidity, and of course, when the humidity in the humidity preservation box 1 reaches the target humidity, the circulating fan 8 can be closed to achieve the effect of energy conservation, the humidity possibly influencing the deformation of the plate 10 is not fixed in value, different plate 10 materials, density, thickness and the like have influences, corresponding data can be obtained through experiments for limited times, the strategy of guiding the humidity control can be guided, and the relevant digital control of the humidity can be fully developed in consideration of various humidity control factors in the research and development of the equipment, the digital control of the humidity possibly has good influence on the digital control of the plate 10.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (4)
1. The humidity control system for the plates comprises a humidity preservation box (1) and is characterized by further comprising a controller (6), wherein the controller (6) is respectively connected with a humidity sensor (5), an input unit (4) and a humidity adjusting actuator, wherein the humidity sensor (5) is used for acquiring humidity signals in the humidity preservation box (1), and the controller (6) is used for receiving the input signals of the input unit (4) and the humidity signals of the humidity sensor (5) and outputting control signals for controlling the humidity adjusting actuator; the humidifying actuator comprises a humidifier (3) and a circulating fan (8), wherein a switching value control port of a controller (6) is connected with the humidifier (3) through a relay and used for controlling the opening of the humidifier (3), an analog value control port of the controller is connected with the humidifier and used for controlling the unit humidifying value of the humidifier (3), a pipeline (2) of the humidifier (3) is arranged at the inner lower part of the humidifying box (1) and outputs water mist into the humidifying box (1) through a spraying hole formed in the pipeline (2), and an air outlet of the circulating fan (8) is arranged below the pipeline (2) and an air inlet is formed in the inner upper part of the humidifying box (1);
the controller (6) performs the steps of:
s1, setting a target humidity value;
s2, acquiring a detected humidity value;
s3, calculating the ratio of the detected humidity value to the target humidity value;
s4, determining a control signal according to the ratio;
s5, controlling the humidifying actuator according to the control signal;
s6, repeatedly executing the steps S2, S3, S4 and S5 according to a preset time interval until the ratio is equal to 1;
the control signals comprise humidity control signals and power control signals, the control signals are used for adjusting the unit humidification amount of the humidifier (3) and the output power of the circulating fan (8), and the humidification amount of the humidifier (3) is the same as the variation trend of the output power of the circulating fan (8);
the ratio and the humidification amount of the humidifier (3) satisfy the following relation:
wherein R represents the ratio, K represents the humidification amount of the humidifier (3), K max Represents the maximum humidification amount K of the humidifier (3) i The (0, A) is the accurate control humidification quantity corresponding to the accurate control interval 0 ]Is a coarse control interval, (A) 0 ，+∞]For the precise control interval, the A 0 A threshold value fitted according to the historical data;
said R epsilon (A) 0 ，+∞]，K＝K i The method comprises the following steps:
wherein K is 1 ＞K 2 ＞K 3 ＞K 4 ，A 0 ＜A 1 ＜A 2 ＜A 3 ，i＝1、2、3、4；
The K is max 、K 1 、K 2 、K 3 、K 4 The ratio of every two adjacent values satisfies the arithmetic relation, namely:
K max -K 1 ＝K 1 -K 2 +Δ；
K 1 -K 2 ＝K 2 -K 3 +Δ；
K 2 -K 3 ＝K 3 -K 4 +Δ；
wherein delta is a tolerance determined according to the type, density and thickness of the plate;
when k=k 1 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 1 ；
When k=k 2 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 2 ；
When k=k 3 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 3 ；
When k=k 4 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 4 ；
Wherein V is 1 ＞V 2 ＞V 3 ＞V 4 。
2. Humidity control method for a humidity chamber (1) for humidity control, applied to a humidity control system for boards according to claim 1, characterized in that: the method comprises the following steps:
s1, setting a target humidity value;
s2, acquiring a detected humidity value;
s3, calculating the ratio of the detected humidity value to the target humidity value;
s4, determining a control signal according to the ratio;
s5, controlling the humidifying actuator according to the control signal;
s6, repeatedly executing the steps S2, S3, S4 and S5 according to preset time intervals until the ratio is equal to 1.
3. A humidity control method according to claim 2 wherein: the ratio and the output power of the circulating fan (8) meet the following relation:
wherein R represents the ratio, P represents the output power of the circulating fan (8), P e Represents the rated power, P, of the circulating fan (8) i For the fine control output power corresponding to the fine control interval, (0, A) 0 ]Is a coarse control interval，(A 0 ，+∞]For the precise control interval, the A 0 Is a threshold fitted from historical data.
4. A humidity control method according to claim 3 wherein: said R epsilon (A) 0 ，+∞]，P＝P i The method specifically comprises the following steps:
wherein P is 1 ＞P 2 ＞P 3 ＞P 4 ，A 0 ＜A 1 ＜A 2 ＜A 3 ，i＝1、2、3、4；
When p=p 1 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 1 ；
When p=p 2 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 2 ；
When p=p 3 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 3 ；
When p=p 4 At the same time, the humidity rising rate in the corresponding humidity preserving box (1) is V 4 ；
Wherein V is 1 ＞V 2 ＞V 3 ＞V 4 ；
The P is e 、P 1 、P 2 、P 3 、P 4 The ratio of every two adjacent values satisfies the arithmetic relation, namely:
P e -P 1 ＝P 1 -P 2 +Δ；
P 1 -P 2 ＝P 2 -P 3 +Δ；
P 2 -P 3 ＝P 3 -P 4 +Δ；
where delta is a tolerance determined according to the type, density, thickness of the sheet material.
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| CN110181631A (en) * | 2019-04-29 | 2019-08-30 | 固原诚信新能源有限公司 | A kind of constant temperature and humidity fog room |
| CN111891565A (en) * | 2020-08-17 | 2020-11-06 | 天津森罗科技股份有限公司 | Vacuum nitrogen-filling humidity control device and vacuum nitrogen-filling environment humidity adjusting method |
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2022
- 2022-01-25 CN CN202210085287.7A patent/CN114454279B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181631A (en) * | 2019-04-29 | 2019-08-30 | 固原诚信新能源有限公司 | A kind of constant temperature and humidity fog room |
| CN111891565A (en) * | 2020-08-17 | 2020-11-06 | 天津森罗科技股份有限公司 | Vacuum nitrogen-filling humidity control device and vacuum nitrogen-filling environment humidity adjusting method |
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| CN114454279A (en) | 2022-05-10 |
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