A humidification control method and its control system

Abstract

The present invention relates to a humidification control method and its control system, comprising the following steps: S1. Start the humidification step, and the main controller controls the fan and the water pump to operate; S2. When the humidifier operates in the silent mode or low gear, the main controller controls the water pump to work intermittently; when the humidifier operates in the working mode or high gear, the main controller controls the water pump to work continuously; S3. When the conductivity of the water added by the user to the water tank changes, the resistance self-learning step is automatically triggered at this time. The advantages of the present invention are as follows: In the normal working mode or high gear, in order to make the humidification capacity of the humidifier reach the optimum, the water pump works continuously. In the low gear or silent mode, through the intermittent operation of the water pump, and by monitoring the humidity of the wet film in real time, combined with the self-learning and adaptive algorithms of the resistance value, the optimal start-stop time of the water pump is achieved, which not only effectively reduces the noise problem caused by the vibration of the water pump, achieves a better user experience, but also achieves a certain energy-saving and consumption-reducing effect.

Description

Technical Field

[0001] The present invention relates to a humidification control method and its control system, belonging to the field of humidification control. Background Art

[0002] Purifiers and humidifiers have been widely used in homes, offices, factories, and hospitals. The function of a purifier is to adsorb, decompose, or convert various air pollutants to effectively improve air cleanliness; the function of a humidifier is to increase air humidity, effectively avoid respiratory diseases, effectively relieve dry eye syndrome, reduce the spread of germs, and effectively eliminate static electricity.

[0003] Currently, for humidifier products using a water pump solution on the market, none of them can detect the humidity of the wet film. The water pump continuously works to maintain the humidification effect. Therefore, the water pump noise problem seriously affects the effect of the silent mode of the humidifier. In addition, the service life of the water pump will also be greatly affected. Summary of the Invention

[0004] To overcome the defects of the prior art, the present invention provides a humidification control method and its control system. The technical solution of the present invention is as follows:

[0005] A humidification control method, characterized by comprising the following steps:

[0006] S1. Start the humidification step. The main controller controls the fan and the water pump to work. Under the action of the water pump, water reaches the humidification film of the humidifier from the water tank. When the wind passes through the humidification film, the moisture is carried away.

[0007] S2. When the humidifier operates in the silent mode or low gear, the main controller controls the opening and closing time of the switching device connected to the power supply of the water pump to control the working and stopping of the water pump. The switching device is a triode, MOS tube, or relay, so that the water pump works intermittently; when the humidifier operates in the high gear of the working mode, the main controller controls the switching device to be continuously opened to make the water pump work continuously.

[0008] S3. When the water tank is full of water, the water pump runs continuously for a preset period. During this process, the main controller continuously detects the change in the resistance value between the electrodes of the humidification film. If the deviation between the resistance value and the resistance value of the previous detection exceeds the deviation set value, it is regarded that the conductivity of the water added by the user to the water tank has changed, and at this time, the resistance value self-learning step is automatically triggered.

[0009] S4. When the main controller detects that the humidification film is dry, it controls the water pump to start working. If after the water pump runs for a preset period, the resistance value detected by the main controller is still less than the resistance value set when the humidification film is saturated, the resistance value self-learning step is automatically triggered at this time.

[0010] In the resistance value self-learning step, specifically:

[0011] The main controller controls the fan to start and the water pump to keep working. The main controller continuously detects the resistance values between all electrodes. When the resistance values between all electrodes no longer decrease, the resistance values between each pair of electrodes are read, and the minimum resistance value is selected as the saturated resistance value of the humidifying film.

[0012]

[0011] (2-2) The main controller turns off the water pump and the fan keeps working. As the moisture of the humidifying film evaporates, the resistance value between the electrodes gradually increases. When the resistance value no longer increases, the resistance values between each pair of electrodes are read, and the maximum resistance value is selected as the dry resistance value of the humidifying film. The saturated set resistance value of the humidifying film is the sum of the saturated resistance value of the humidifying film and the saturated resistance threshold of the humidifying film, and the dry set resistance value of the wet film is the dry resistance value of the wet film minus the dry resistance threshold of the wet film.

[0013] In step S2, when the water pump works intermittently, the water intake time of the intermittent operation of the water pump is set according to the time when the humidifying film absorbs water from dry to saturated; the stop time of the intermittent operation of the water pump is the time required for the humidifying film to reduce the water content to the designed value from saturated water absorption.

[0014] The water intake model of the water pump is , where H(t) is the humidity of the wet film, H0 is the initial humidity of the wet film, is the water pump efficiency, is the water absorption rate of the wet film, T1 is the operation time of the water pump, is the fan speed coefficient, is the relative environmental humidity, T2 is the stop time of the intermittent operation of the water pump, ΩT1 is the operation time from 0 to T1, and ΩT2 is the stop time from 0 to T2; the opening and closing interval time of the water pump can be obtained through this water intake model.

[0015] In step S1, during the humidifying step, the fan works and the water pump intakes water. The humidity detection module of the main controller detects the resistance values between the electrodes of all electrode pairs. When all the resistance values are less than the saturated set resistance value of the humidifying film, it is regarded that the humidifying film is saturated with water absorption and the water pump stops working; when the water pump stops, if the resistance value between the electrodes of any one electrode pair is greater than the dry set resistance value of the humidifying film, it is regarded that the humidifying film is dry and the water pump starts to work.

[0016] A humidifier control system includes a main controller, a fan, a water pump switch, a water level detection module, a temperature and humidity detection module, and a humidity detection module connected to the main controller; the main controller controls the operation and stop of the water pump by controlling the opening and closing of the water pump switch; the humidity detection module cooperates with the humidifying film to detect the humidity of the humidifying film; the temperature and humidity detection module is used to detect the ambient temperature and relative humidity; the water inlet of the water pump is connected to the water tank through a water inlet pipe, and the water outlet of the water pump corresponds to the humidifying film of the humidifier through a water outlet pipe; the humidifying film also corresponds to the air outlet of the fan.

[0017] The main controller includes a control unit composed of a single-chip microcomputer processor and peripheral devices; the water pump switch is a triode, MOS tube or relay, which is a switching device for controlling the conduction and disconnection of the power supply, and the water pump switch realizes conduction and disconnection under the control signal of the main controller; the humidity detection module is an electrode pair composed of two conductive needles. After installation, the needle-shaped electrodes penetrate into the humidifying film. Different water contents in the wet film result in different resistance values between the corresponding electrodes. The humidity change of the wet film is detected by detecting the resistance value change between the two electrodes; each humidity detection module is provided with one or more electrode pairs. When multiple pairs of electrodes are set, the electrodes are evenly distributed.

[0018] When humidifying, the main controller controls the fan to start, the water pump switch to open, the power supply to supply power to the water pump through the water pump switch, and the water pump works after getting power. The water pump pumps water from a low place to the humidifying film located at a high place. When the wind blown by the fan passes through the humidifying film, the moisture is taken away to achieve the humidifying function.

[0019] The advantages of the present invention are: in the normal working mode or high gear, to make the humidifying ability of the humidifier reach the optimum, the water pump works continuously. In the low gear or silent mode, the water pump works intermittently, and at the same time, by monitoring the humidity of the wet film in real time and combining the self-learning and adaptive algorithms of the resistance value, the optimum start-stop time of the water pump is achieved, which not only effectively reduces the noise problem caused by the vibration of the water pump and achieves a better user experience, but also achieves a certain energy-saving and consumption-reducing effect. Description of the Drawings

[0020] Figure 1 is the schematic diagram of the working process of the present invention.

[0021] Figure 2 is the schematic diagram of the main structure of the present invention.

[0022] Figure 3 is the schematic diagram of the water path and air path of the present invention. Detailed Embodiments

[0023] The present invention will be further described below in conjunction with specific embodiments, and the advantages and features of the present invention will become clearer as the description progresses. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. Those skilled in the art should understand that the details and forms of the technical solutions of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but such modifications and replacements all fall within the protection scope of the present invention.

[0024] See Figures 1 to 3 , the present invention relates to a humidification control method, characterized in that it includes the following steps:

[0025] S1. Start the humidification step. The main controller controls the fan and the water pump to work. Under the action of the water pump, water reaches the humidification film of the humidifier from the water tank. When the wind passes through the humidification film, the moisture is carried away;

[0026] S2. When the humidifier operates in the silent mode or low gear, the main controller controls the opening and closing time of the switching device connected to the power supply of the water pump to control the operation and stop of the water pump. The switching device is a triode, MOS tube or relay, so that the water pump works intermittently; when the humidifier operates in the working mode or high gear, the main controller controls the switching device to be continuously opened to make the water pump work continuously;

[0027] S3. When the water tank is full of water, the water pump runs continuously for a preset time period (taking 5 minutes as an example). During this process, the main controller continuously detects the change in the resistance value between the electrodes of the humidification film. If the deviation between the resistance value and the previous detected resistance value exceeds the deviation setting value, it is regarded that the conductivity of the water added by the user in the water tank has changed, and at this time, the resistance value self-learning step is automatically triggered;

[0028] S4. When the main controller detects that the humidification film is dry, it controls the water pump to start working. If after the water pump runs for a preset time period (taking 5 minutes as an example), the resistance value detected by the main controller is still less than the resistance value set when the humidification film is saturated, the resistance value self-learning step is automatically triggered at this time.

[0029] In the resistance value self-learning step, specifically:

[0030] (2-1) The main controller controls the fan to start, the water pump works continuously, and the main controller continuously detects the resistance values between all electrodes. When the resistance values between all electrodes no longer decrease, read the resistance values between each electrode, and select the minimum resistance value as the saturated resistance value of the humidification film;

[0031] In (2-2), the main controller shuts down the water pump, and the fan continues to operate. As the moisture on the humidification film evaporates, the resistance value between the electrodes gradually increases. When the resistance value no longer increases, the resistance values between each pair of electrodes are read, and the maximum resistance value is selected as the dry resistance value of the humidification film. The saturated set resistance value of the humidification film is the sum of the saturated resistance value of the humidification film and the saturated resistance threshold of the humidification film, and the dry set resistance value of the wet film is the dry resistance value of the wet film minus the dry resistance threshold of the wet film.

[0032] In the step S2, when the water pump operates intermittently, the water intake time of the intermittent operation of the water pump is set according to the time that the water pump runs after the humidification film absorbs water from dry to saturated; the stop time of the intermittent operation of the water pump is the time required for the humidification film to reduce the water content to the designed value from the saturated water absorption.

[0033] The water pump water diversion model is , where H(t) is the humidity of the wet film, H0 is the initial humidity of the wet film, is the water pump efficiency, is the water absorption rate of the wet film, T1 is the operation time of the water pump, is the fan speed coefficient, is the environmental relative humidity, T2 is the stop time of the intermittent operation of the water pump, ΩT1 is the operation time from 0 to T1, and ΩT2 is the stop time from 0 to T2; the opening and closing interval time of the water pump that can be satisfied is obtained through this water diversion model, which improves the effective utilization rate of the water pump and at the same time meets the humidity requirements of the humidification film.

[0034] In the step S1, during the humidification step, the fan operates and the water pump fills water. The humidity detection module of the main controller detects the resistance values between the electrodes of all electrode pairs. When all the resistance values are less than the saturated set resistance value of the humidification film, it is regarded that the humidification film has absorbed water saturatedly, and the water pump stops working; when the water pump stops, if the resistance value between the electrodes of any one electrode pair is greater than the dry set resistance value of the humidification film, it is regarded that the humidification film is dry, and the water pump starts to work.

[0035] The present invention also discloses a humidifier control system, including a main controller 1, a fan 4, a water pump switch 6, a water level detection module 8, a temperature and humidity detection module 5, and a humidity detection module 9 connected to the main controller 1; the main controller 1 controls the work and stop of the water pump 7 by controlling the opening and closing of the water pump switch 6; the humidity detection module 9 cooperates with the humidification film to detect the humidity of the humidification film; the temperature and humidity detection module 5 is used to detect the environmental temperature and relative humidity; the water inlet of the water pump is communicated with the water tank through a water inlet pipe, and the water outlet of the water pump 7 corresponds to the humidification film of the humidifier through a water outlet pipe; the humidification film corresponds to the air outlet of the fan at the same time.

[0036] The main controller 3 includes a control unit composed of a single-chip microcomputer processor and peripheral devices; the water pump switch is a triode, MOS tube or relay, which is a switching device for controlling the on and off of the power supply. The water pump switch 6 is turned on and off under the control signal of the main controller; the humidity detection module is an electrode pair composed of two conductive needles. After installation, the needle-shaped electrodes penetrate into the humidifying film. The resistance value between the electrodes corresponding to different water contents in the wet film is different. The humidity change of the wet film is detected by detecting the change in the resistance value between the two electrodes; each humidity detection module is provided with one or more electrode pairs. When multiple pairs of electrodes are set, the electrodes are evenly distributed.

[0037] When humidifying, the main controller controls the fan to start, the water pump switch is turned on, the power supply supplies power to the water pump through the water pump switch, and the water pump works after being powered on. The water pump pumps water from a low place to the humidifying film located at a high place. When the wind blown by the fan passes through the humidifying film, the moisture is carried away to achieve the humidifying function.

[0038] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A humidification control method, characterized in that, It includes the following steps: S1. Start the humidification step. The main controller controls the fan and the water pump to work. Under the action of the water pump, water reaches the humidification film of the humidifier from the water tank. When the wind passes through the humidification film, the moisture is carried away. In the step S1, during the humidification step, the fan works and the water pump pumps water. The humidity detection module of the main controller detects the resistance value between the electrodes of all electrode pairs. When all the resistance values are less than the saturated set resistance value of the humidification film, it is regarded that the humidification film is saturated with water absorption, and the water pump stops working. When the water pump stops, if the resistance value between the electrodes of any one electrode pair is greater than the dry set resistance value of the humidification film, it is regarded that the humidification film is dry, and the water pump starts to work; S2. When the humidifier operates in the silent mode or low gear, the main controller controls the opening and closing time of the switch device connected to the power supply of the water pump to control the working and stopping of the water pump. The switch device is a triode, a MOS tube or a relay, so that the water pump works intermittently. When the humidifier operates in the high gear of the working mode, the main controller controls the switch device to be continuously opened to make the water pump work continuously; S3. When the water tank is filled with water, the water pump runs continuously for a preset time period. During this process, the main controller continuously detects the change of the resistance value between the electrodes of the humidification film. If the deviation between the resistance value and the resistance value of the previous detection exceeds the deviation set value, it is regarded that the conductivity of the water added by the user in the water tank has changed, and at this time, the resistance value self-learning step is automatically triggered; S4. When the main controller detects that the humidification film is dry, it controls the water pump to start working. If the resistance value detected by the main controller is still less than the resistance value set when the humidification film is saturated after the water pump runs for a preset time period, the resistance value self-learning step is automatically triggered at this time; In the resistance value self-learning step, specifically: (2-1) The main controller controls the fan to start, and the water pump works continuously. The main controller continuously detects the resistance value between all electrodes. When the resistance value between all electrodes no longer decreases, read the resistance value between each electrode, and select the minimum resistance value as the saturated resistance value of the humidification film; (2-2) The main controller turns off the water pump, and the fan works continuously. As the moisture on the humidification film evaporates, the resistance value between the electrodes gradually increases until the resistance value no longer increases. Read the resistance value between each electrode, and select the maximum resistance value as the dry resistance value of the humidification film. The saturated set resistance value of the humidification film is the sum of the saturated resistance value of the humidification film and the saturated resistance threshold of the humidification film. The dry set resistance value of the wet film is the dry resistance value of the wet film minus the dry resistance threshold of the wet film.

2. The humidification control method according to claim 1, wherein In the step S2, when the water pump works intermittently, the water supply time of the intermittent work of the water pump is set according to the time when the water pump runs after the humidification film absorbs water from dry to saturated. The stop time of the intermittent work of the water pump is the time required for the humidification film to reduce the water content to the designed value from the saturated water absorption; The water pump water diversion model is , where H(t) is the humidity of the wet film, H0 is the initial humidity of the wet film, is the water pump efficiency, is the water absorption rate of the wet film, T1 is the operating time of the water pump, is the fan speed coefficient, is the environmental relative humidity, T2 is the stop time of the intermittent operation of the water pump, ΩT1 is the operating time from 0 to T1, and ΩT2 is the stop time from 0 to T2; the opening and closing interval time of the water pump can be obtained through this water diversion model.

3. A humidifier control system for implementing the humidification control method according to any one of claims 1 or 2, characterized in that, It includes a main controller, a fan, a water pump switch, a water level detection module, a temperature and humidity detection module, and a humidity detection module connected to the main controller; the main controller controls the operation and stop of the water pump by controlling the opening and closing of the water pump switch; the humidity detection module cooperates with the humidifying film to detect the humidity of the humidifying film; the temperature and humidity detection module is used to detect the ambient temperature and relative humidity; the water inlet of the water pump is connected to the water tank through a water inlet pipe, and the water outlet of the water pump corresponds to the humidifying film of the humidifier; the humidifying film also corresponds to the air outlet of the fan; The main controller includes a control unit composed of a single-chip microcomputer processor and peripheral devices; the water pump switch is a triode, MOS tube or relay, which is a switching device for controlling the conduction and disconnection of the power supply, and the water pump switch is turned on and off under the control signal of the main controller; the humidity detection module is an electrode pair composed of two conductive needles. After installation, the needle-shaped electrodes are inserted into the humidifying film. The resistance value between the electrodes is different corresponding to different water contents in the wet film. The humidity change of the wet film is detected by detecting the resistance value change between the two electrodes; each humidity detection module is provided with one or more electrode pairs. When multiple pairs of electrodes are set, the electrodes are evenly distributed.

4. The humidifier control system according to claim 3, characterized in that, When humidifying, the main controller controls the fan to start, the water pump switch is turned on, the power supply supplies power to the water pump through the water pump switch, and the water pump works after being powered on. The water pump pumps water from a low place to the humidifying film located at a high place. When the wind blown by the fan passes through the humidifying film, the moisture is carried away to achieve the humidifying function.

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