1. Introduction
air purifier, in the traditional sense, it is enough to complete the air purification. However, with the continuous upgrading of market competition, air purifiers of different brands have gradually differentiated. Some are deep-growing in air purification itself, and some are working hard on functional integration. The deepening of the air purification function will not be discussed here, there is too much to say. Speaking of functional integration, I myself have used humidifiers and self-movable air purifiers, and I felt refreshed for a while.
Of course, even function integration exists to improve the indoor environment. Personally, the main demand for current air purifiers is concentrated in air-conditioned rooms.
▲ They all say "the fire in July, the clothes will be given in September". Today's weather is that there is no cold in July, and there is no need to sew winter clothes in September. The temperature at night is still 27℃, and I use the air conditioner to blow it all night. Therefore, it is natural to think of using an air purifier to purify the air in the enclosed indoor space. Of course, in order to prevent the air conditioner from blowing at people to cause a cold, a circulating fan will be turned on to even out the indoor airflow.
However, the bedroom space is often tight, so it is not good to have an air purifier here or an air circulation fan, right? Huh...how do you say that brands know themselves better than consumers? The Mijia circulating air purifier, which was recently launched for crowdfunding, uses an integrated combination of air purifier + air circulation fan. It has been online for 3 days and has exceeded the crowdfunding target, which is hot.
Fortunately to get this machine in advance, this article will share my experience with this product. Not much to say, let's enter the main text.
2. Circulating fan unit
2.1 Structural modeling
Let’s take a look at the Mijia circulating air purifier.It is convenient to have an intuitive impression:
▲The top is a circulating fan structure, which is flush with the lower body after being stored; the upper part of the front of the body is an OLED touch screen; the bottom is a circular air inlet.
▲The back of the fuselage includes the sensor window above the fuselage, the middle is the handle and the opening of the filter cartridge, and the air inlet and power socket are below. The design is relatively simple.
▲It looks like a complete circulating fan at the top. The spokes are compact and there is no danger of pinching hands.
▲Whether it is the outer body or the circulating fan assembly, the workmanship and design sense are very good.
2.2 The air supply is farther, the coverage is wider, and the purification effect is better
So what is the use of the circulating wind structure? This has to start with the direction of the wind in and out of the traditional air purification.
▲Traditional air purifiers mostly adopt the design of side air inlet and top air outlet. Therefore, regardless of its processing capacity, there is a process in which the clean air from the air outlet folds back from the ceiling into the bottom space. It can be seen that the distribution of clean air in the room is very uneven, and even part of it enters the side air inlet of the air purifier. , Causing unnecessary air purification load.
So what is the use of circulating wind ? Circulating wind can strengthen indoor air convection and make the cleanliness of indoor air more uniform.
▲Turn on the Mijia circulating air purifier, the top circulating fan is slowly raised, the default angle is fan mode.
▲The lifting angle of the fan mode is 85°, basically it feels like a front blowing. Of course, compared to the split structure of an air purifier and an air circulation fan, this composite shape is undoubtedly very space-saving.
▼Let’s take a closer look at the opening and closing angles of the fans of the Mijia circulating air purifier. The first is the purification mode:
▲In the purification mode, the fan lift angle is 45. °. When we were studying physics, we knew that the projectile distance S=V0＾2×sin(2×α)/g, when sin(2α)=1, the shot distance was the farthest, and we calculated that α=45°. The whole house air circulation of Mijia circulating air purifier is also based on this principle: when the fan is raised at an angle of 45°, the air outlet distance is the farthest.
▲In the air outlet coverage distance test of the Mijia circulating air purifier, it can be found that the air outlet distance can reach more than 8 meters, and the general bedroom size is only 4m×3.5m×3m Around, Mijia circulating wind air purifier is sufficient to achieve its goal of whole house air circulation.
▲In addition to the adjustment of the pitch angle, the Mijia circulating air purifier also supports shaking the head around 90°, which makes the indoor air distribution more even.
▲Moreover,Because the circulating air strengthens the disturbance to the indoor air, the efficiency of the Mijia circulating air purifier for formaldehyde purification has also been greatly improved.
2.3 Multi-scene practicality
In addition to the main purification mode, the circulating air structure also has a sleep mode with a lift angle of 0° and an 85° fan mode.
▲Of course, people should not use the fan to blow directly when they are sleeping. In sleep mode, the fan opens and closes at 0°. 45° or 85°), but there will be a breeze.
▲I believe that many friends, especially those who feel shallow, are more worried that the sound of electrical equipment is too loud, which affects the quality of sleep. The sound decibels of the Mijia circulating air purifier in sleep mode are only 3 decibels higher than the ambient noise, which is only equivalent to the level of whispering, and it is not afraid to feel shallow.
▲Fan mode is suitable for indoor air quality is good, but the flow is not enough. Turn on the fan mode to enhance the air circulation effect.
2.4 Simple operation, easy to retract and retract
The touch screen function is switched on or off in 3 positions, and the touch screen is switched on or off. Very sensitive. However, the OLED screen is really easy to stain, which affects the look and feel. I don't know if there is any good solution? Film?
▲The unfolding and storage process of the top loop fan,Quite smart, if the fan head is swayed to one side, it will automatically reset to the original position.
3. Purifier unit
3.1 Structural modeling
▲The disassembly of the purifier unit looks very simple.
▲The body of the Mijia circulating air purifier is light and thin, easy to move, and there are many holes in the body, which is very helpful for uniform and large air intake.
▲From the appearance of the filter element of the Mijia circulating air purifier, you can basically see the overall structure, mainly the primary effect filter that separates large particles from the outer layer, the green filter paper in the middle, and Internal activated carbon and metal mesh.
▲The filter element has high pollutants such as PM2.5, TVOC, , Streptococcus pneumoniae , Staphylococcus albicans, Escherichia coli and pollen. The removal rate (99.98%, 95.7%, 99.9%, 99.68%, 99.95%, 98.1%).
▲The loading and unloading of the filter element is also very simple and can be done with one hand. The price of the filter element has not yet been given, but according to past experience, it will not exceed 500 yuan, so the cost of consumables is not high.
3.2 Purification function monitoring and control
▲The data monitoring sensor of Mijia circulating air purifier includes various environmental sensors such as VOC, PM2.5, temperature and humidity.Among them, the PM2.5 sensor is on the surface of the fuselage, and the other sensors are located inside the machine. This is a rare occurrence after I use many types of air purifiers to place the PM2.5 sensor externally, which is very good for the cleaning of the sensor after a long time of use.
▲The OLED touch screen of the Mijia circulating air purifier can display a lot of data. I think this is very friendly to the elderly/children at home, that is, it can be on the touch screen If you want to check/solve the problem, try not to drag it to the App (for example, my mom doesn't use it smoothly when using a smart phone). At the same time, the colorful status light ring on the outer circle of the touch screen is also useful for those with poor eyesight. It looks more intuitive~ For example, in my picture, because someone burns rice stalks outdoors, PM2.5 is also It is very sensitive to detect that the limit is exceeded, and the outer ring light turns into heavily polluted red. Light pollution and good air quality correspond to orange and green indicator lights respectively.
▲In terms of processing capacity, the CADR particulate matter of the Mijia circulating air purifier is 510m³/h, the CADR formaldehyde is 300m³/h, and the cumulative purification capacity can reach their highest level.
▲Compared with some air purifiers on the market, it is quite cost-effective under the combination of pollutant handling capacity, richness of functions and price.
4. Two small flashing details
▲As mentioned above, the Mijia circulating air purifier has a good noise control in sleep mode. In fact, it does the same in light pollution control. Very good. On the Mijia App, you can remotely control the brightness of the touch screen. If you feel that the bright screen dazzles your eyes, you can choose to dim or turn off the backlight completely, which is very user-friendly, right?
▲In addition,In addition to manually adjusting the screen brightness, you can also select automatic mode. At this point, the light sensor we mentioned earlier works, it automatically receives light, and adjusts the light intensity of the screen itself as the light intensity changes.
▲ Another small detail is that I noticed that the Mijia circulating air purifier has made a good plan for the later maintenance of the product. For example, considering that the circulating fan unit is used to clean up the accumulated dust over time, a detachable structure is designed, and a hex wrench , a Phillips screwdriver and a brush are officially equipped to facilitate the user to clean the machine. The dust on the air inlet and the wall of the filter cartridge can be wiped with a soft cloth, which is very convenient.
5. Use of App
Mijia circulating air purifier supports Mijia App remote control, Xiaoai voice control, and supports Xiaomi's smooth connection.
▲ Mijia App can be said to be a very powerful integrated app. I already have a lot of rice products. Seeing that there are more and more related products, there is a kind of family building A sense of accomplishment.
▲It is also because of the maturity of Mijia App that it is very smooth when binding devices (previously when using a traditional air filter, I encountered the embarrassment of not being able to bind), and You can also perform personalized operations such as scene selection, naming, and sharing.
▲Compared with the powerful OLED touch screen, the Mijia circulating air purifier App has a more complete interface function. For example, it can achieve richer head-up and left-right swing angle settings,You can view the removal curve of PM2.5, select functions such as opening and closing anion, child lock, check the life of the filter element, set smart scenes, etc. The control function is very comprehensive, which is not possible with traditional air purifiers.
6. Summary
This time the Mijia circulating air purifier was born. The biggest highlight is the circulating fan unit on the top, which averages the concentration of indoor space and improves air purification efficiency and air flow. It also saves the space and budget of the independent air circulation fan. It can be said to be a very thoughtful design.
At the same time, this product continues the simple, high-value, and cost-effective characteristics of the rice products. In the details of noise control, adjustable highlights, and easy maintenance, it also reflects the characteristics of Mijia being close to users. . To build a modern and smart home, the Mijia circulating air purifier is attentive in the details, and it is inevitable that people will be able to play and play.
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