Humidifier program development and design

2021-01-05 16:32:05 hongling

The main function of the humidifier is to increase and adjust indoor humidity, adjust indoor temperature, eliminate static electricity, maintain skin care, and maintain health. Especially with the improvement of people's living standards, air-conditioning is widely used, resulting in air-conditioning diseases such as tight skin, dry mouth, cough and cold. Some humidifiers can also release a large amount of negative oxygen ions during the atomization process, which can effectively increase the indoor humidity, moisturize the dry air, and combine with the smoke and dust floating in the air to make it precipitate, which can effectively remove the smell of paint, musty, and Smoke and smell make the air fresher.


1. Comparison of the pros and cons of 3 household humidifier solutions

At present, the common humidifiers on the market have many different working methods, and the purpose is to increase the humidity, which can be described as "different ways to the same goal". Therefore, in addition to choosing a brand, consumers must also consider the type. According to different working principles, humidifiers can be divided into three categories: thermal humidification, ultrasonic humidification, and fan humidification.


1. Thermal humidification type


The working principle of this kind of humidifier is simple, it is to boil the water, make the water become steam and circulate indoors, so as to achieve the purpose of humidification. The biggest advantage of this type of humidifier is that it must be aseptic humidification with extremely high purity, and it is indeed a "pure humidifier". Due to the principle of this humidification method, the generated water vapor can also rise to a sufficient height indoors, so that the scope of benefits of this humidifier is expanded. In addition, water vapor is actually invisible to humans. The white "water vapor" that can be seen in the past is nothing more than water mist spreading in the air. Another advantage of this type of humidifier is that it is easier to maintain and to achieve large humidification.


The main disadvantage of this type of humidifier is that it consumes a lot of power. Generally, it needs two or three hundred watts, and it consumes 3 kWh or even more power overnight. Because of the sufficient power supply abroad, most of these humidifiers are used.


2. Ultrasonic humidification type


Ultrasound refers to "sound" waves with frequencies beyond the audible range of the human ear. It is still a mechanical wave that propagates in objects in the form of longitudinal waves. The working principle of an ultrasonic humidifier is to use a transducer to convert electrical energy into mechanical energy, and to atomize the water with a rapid oscillation in the water and spread it into the air. In this way, the purpose of humidification is achieved. The main advantage of this type of humidifier is that it is relatively power-saving. Due to the high efficiency of the transducer and circuit, the power consumption of this type of humidifier is only 30 to 40 watts. It does not use 0.5 kWh of electricity overnight, which is indeed very economical. Its humidification work is also very intuitive, and the white mist makes people look very comfortable. However, its humidification capacity is not too large, and it is generally suitable for use in small bedrooms. Due to the limitation of the working principle, although the water mist is very beautiful, it does not benefit much.


The main disadvantage of this type of humidifier is frequent maintenance. Generally, maintenance is required every four or five days, because a layer of green moss will soon form on the transducer. If it is not cleaned, it will directly affect the atomization. The water mist is gone! Fortunately, various manufacturers provide cleaning agents for random sale, and the cleaning work is not troublesome, and it is easy to master. Another disadvantage of this type of humidifier is that it is easy to form secondary air pollution. If it is not cleaned in place and the water quality is not good, it will be harmful to human health. It is better to use cool boiled water or purified water, so that it is not easy to leave white powder in front of the humidifier. According to the medical equipment authority, the secondary pollution caused by the inadequate cleaning of the medical ultrasonic atomizer (which is consistent with the principle and composition of the household ultrasonic humidifier) is closely related to the increase of respiratory infections in children in winter.


3. Fan humidification type


A typical feature of this type of humidifier is to use a low-noise fan inside the humidifier. Its working principle is to use a towel-like super absorbent article to absorb moisture first, and at the same time allow the fan to continuously force circulating air to take away the moisture. , Radiate into the air.


This type of humidifier is generally exquisite in design, can maintain the balance of the water surface, has no unbearable noise, and has a large amount of humidification. This method also makes the humidification process relatively pure, so some manufacturers also call it "pure" humidification. Device. Its main advantage is that it saves electricity and because of forced air circulation, it can partially purify the air. The disadvantage is that high-quality fans must be used, so the price is high, and maintenance work is also required, but it is not as frequent as the maintenance required for ultrasonic humidifiers.


In summary, the three types of humidifiers have their advantages and disadvantages, and consumers can choose according to their specific conditions. If the room is large and facing the street, and you don’t care about the noise, you can choose a pure direct evaporation type. Ordinary families may wish to try the ultrasonic type. Distilled or cold water is even better if possible. Families with better conditions can choose the thermal evaporation type, which is convenient and easy.

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2. Large-scale humidifier solutions for industrial applications

1. High-pressure spray humidifier


This is an isenthalpic humidification method in which the filter, pump unit, water tank, and control box of the humidifier are installed in the workshop or machine room, and the spray system (nozzle, pipe), etc., are installed on the top of the workshop. This humidification method is to pressurize the tap water through the main humidifier and pass it through ultra-fine filtration, and spray it through a special nozzle atomized at a high speed to form 5-10/an water mist particles, which exchange heat and humidity with the flowing air. Absorb the heat in the air, vaporize and evaporate, increase the humidity of the air, realize the humidification of the air, and at the same time play the role of cooling and controlling dust. The high-pressure spray humidifier can independently cool the workshop, humidify and spray liquid.


2. Wet film evaporative humidifier


The working principle of the wet film evaporative humidifier of the central air conditioner is very simple. The water flows from the top of the wet film through the steam trap along the corrugated surface of the wet film evenly, so that the wet film is evenly moistened from top to bottom. When the dry heat When air flows over the surface of the wet film, it exchanges heat with the moisture in the wet film. The moisture is heated to evaporate into water vapor into the air, increasing the humidity of the air, and turning the dry hot air into clean and humid air.


The wet film material (also known as "Sydike") is the core of the wet film humidifier. It uses plant fiber as the base material and is sintered to form a corrugated cross-overlapping polymer composite material through a special resin treatment. Water absorption, good self-cleaning ability, non-toxic, acid and alkali resistance, mold resistance, flame retardant and provide the largest contact surface area between moisture and air.

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3. Design of smart humidifier

1. Design of atomization function of humidifier


Atomization device, including an atomization sheet, used to generate water mist; a pipe connected to the atomization device for exporting the water mist generated by the atomization device; a mist outlet pipe, including a mist inlet manifold and an air outlet, and one end of the mist inlet manifold The duct is sealed and connected with the air outlet at the other end. The air outlet is two oppositely arranged air outlets; the fan is installed between the duct and the mist inlet main pipe to accelerate the water mist flowing from the duct into the mist inlet main pipe; The atomization sheet fixing plate is used to fix and support the atomization sheet. The silencer includes a bracket and a silencer. The silencer is installed on the upper part of the fan through the bracket and is inclined 8-25 to the direction of the branch outlet on the same side.


2. Design of humidifier control part


A timer, which is electrically connected to the atomizer sheet, is used to record the working time of the atomizer sheet, and a data processing device, which is connected to the timer, inputs the set working time and receives working time information, and outputs the first A signal; the controller, which is connected to the atomization device and the data processing device, receives the first signal and outputs an alarm signal; the signal transmission device, which is connected to the controller, is used to receive and transmit the alarm signal alarm, and it is connected to the signal transmission device, Receive the alarm signal and issue an overtime alarm. The atomization adjustment knob is used to adjust the amount of fog out of the atomization sheet, and the duration adjustment knob is used to input to the data processing device to set the working time. The wireless data transmission device is connected to the signal transmission device and the controller, and is used to connect the wireless network and the mobile terminal.


3. Block diagram design of humidifier system


The picture below is the system design of the humidifier.

加湿器系统框图

4. Working principle of humidifier


After the mains power passes through the switching power supply, it outputs two voltages of 36V and 12V, of which 36V power supply water vapor atomization module; 12V power supply fan, also includes water shortage indicator and working indicator, using reed switch as liquid level detection switch; RT1 is Mist size adjustment potentiometer. Ultrasonic humidifier uses ultrasonic high-frequency vibration of 1. 7M HZ frequency to atomize water into ultra-fine particles of 1-5 microns. Through a wind-driven device, the water mist is diffused into the air to make the air humid and accompanied by abundant negative oxygen ions. , Can freshen the air, improve health, and create a comfortable environment. The working time of the atomizer is recorded by a timer. The data processing device processes the working time and the set time of the atomizer. The controller receives the first signal from the data processing device and sends an alarm signal to the alarm. Alarm to prevent overheating of the atomizer sheet over time and prevent the atomizer sheet from being able to produce water mist due to scaling caused by prolonged operation. The mobile phone terminal and the main control device are connected through the wireless transmission device, and the commands sent by the mobile phone terminal are received and transmitted to the main control device to realize remote control of the humidifier to work.


5. Functional characteristics of smart humidifier


(1) The timer is combined with the data processing device and the controller to count the accumulated working hours of the atomizer, and give an alarm in time to prevent the atomizer from working for too long and cause scale precipitation, thereby affecting normal operation.


(2) Speed up the flow rate of water mist through the fan, and use a muffler to eliminate the noise caused by the fan.


(3) Another function of this design is to record the working time of the atomizer through a timer. The data processing device processes the working time and the set time of the atomizer. The controller receives the first signal from the data processing device and Send an alarm signal to the alarm, and the alarm will alarm, so as to prevent the atomization sheet from overheating over time and prevent the atomization sheet from scaling and failing to produce water mist due to long-term operation.


(4) The mobile phone terminal and the main control device are connected through the wireless transmission device, and the commands sent by the mobile phone terminal are received and transmitted to the main control device to realize remote control of the humidifier to work.


6. Summary of the advantages of smart humidifier solutions


The fan speeds up the flow of water mist, and the noise reduction device is used to eliminate the noise caused by the fan. The working time of the atomizer is recorded by a timer, and the data processing device processes and controls the working time and the set time of the atomizer. The device receives the first signal from the data processing device and sends an alarm signal to the alarm, which will give an alarm to prevent overheating of the atomizer sheet over time and prevent the atomizer sheet from being scaled due to prolonged operation and failing to produce water mist. The purpose of controlling the smart humidifier with the mobile phone is realized, and the utility model is strong, the control is convenient and simple, and has certain practical value.

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Fourth, the use of humidifier sharing

In the process of using the humidifier, we often encounter various problems, such as the humidifier is always on, why the humidification effect is still not ideal? Where is the proper place for the humidifier? Do I need to close the doors and windows during use?


1. How to use a humidifier for better results?


In order to obtain a good humidification effect, factors such as climate, room area and humidification capacity of the humidifier should be considered comprehensively when purchasing. If you live in a windy and dry area or have a large room, you need a larger amount of humidification. When using a humidifier, you should also pay attention to the control of humidity. Too low humidity can make people's skin tight, dry mouth, and easily cause respiratory diseases such as bronchitis, flu, and rhinitis. But too high humidity also affects the water balance between the human body and the environment, making people feel bored. According to experiments, people feel the most suitable and beneficial to health when the humidity is 40%RH~60%RH. Therefore, it is best to use a humidifier with automatic constant humidity function. Only when the indoor humidity is lower than the standard range, the machine will start humidification, and if it is above this range, the amount of fog will be reduced until the humidification is stopped. If you use a humidifier without automatic constant humidity function, it is best to put a hygrometer indoors to know the air humidity at any time. And adjust the working condition of the humidifier according to the humidity.


2. How to maintain the humidifier?


The humidifier should be installed on a stable surface with a height of 0.5 m to 1.5 m, away from heat sources, corrosives, furniture, etc., and avoid direct sunlight. Do not use under freezing conditions, and stop immediately when encountering a failure. Clean the humidifier once a week. Do not put the machine in water when cleaning. The water temperature during cleaning should not exceed 50°C.


3. The magical function of humidifier


(1) Add a special perfume, let the fragrance mist linger in it, and add a touch of romance and warmth to the warm and humid home. However, perfume should not be oily, and the concentration should not be too high, otherwise it will affect the evaporation of mist. (2) Adding a special disinfectant to the water tank can effectively block the intrusion of influenza, pneumonia and other viruses on the human body. Wrap Chinese herbal medicines such as Radix isatidis in a cloth and put them in the water tank to prevent colds.


4. The use of humidifiers is taboo


(1) It is not that the larger the humidification, the better, it should be kept between 40% and 60% R H, and the humidification of the humidifier should be controlled between 3o0 and 350 ml per hour. (2) Various humidifiers have different requirements for water quality, such as pure water for pure humidifiers, pure water or distilled water for ultrasonic humidifiers, and ordinary water for electric heating humidifiers. (3) The water in the humidifier water tank may be used up at any time and the machine will be damaged by dry burning when idling. Therefore, try to use products with automatic protection against water shortage. At the same time, pay attention to the water storage in the water tank and replenish it in time.

Humidifier program development and design