[PConline Professional Evaluation] The air quality is getting worse and worse. More and more people wear masks to go out. We must use high-tech air purifiers for air quality in our homes. It has to be said that the forced use of air purifiers is the tragedy of this era. There is no way we can only follow the trend. What we can do is choose suitable high-quality products. Today came to our evaluation room is such a product, diamond brand KJ350 air purifier. Although the sparrow is small and fully-equipped, the air purification function is complete, and the price is reasonable, let us explore the other features of the product below.
Appearance and details
The author received the KJ350 air purifier, which was sent for testing by the diamond brand. The double wrap design was used on the transport packaging to ensure that the perfectionist received the internal packaging still intact. From the packaging, we can see the familiar diamond logo and the front of the fuselage, including the main selling point of this air purifier.
Open the first layer of the package. We see the inside of the box and use foam to wrap the entire machine. To prevent the collision of the machine during transportation, the instructions and the remote control are placed on the top of the machine so that it can be used to read detailed usage methods before use.
Open the second layer of the package to see that the KJ350 air purifier package fully protects the machine from being damaged during the collision during transportation, and the foam is used to interlock all the bodies and accessories. And each accessory will have a separate plastic bag wrapped to prevent scratching and so on.
After opening the package, you can see the appearance of the KJ350 air purifier. The first impression for Xiao Bian is a tough body. According to reports, the KJ350 air purifier uses the military to build, and the national military standard certification production line uses the JIS all-metal machine. Body, made of 0.8mm high-strength steel plate. The interior of the fuselage uses environmentally friendly ABS plastic. Both the metal body of the rigorous and stable, plastic top cover and the streamlined sense of the inner frame.
Use the air intake on both sides of the bottom, the top of the wind design. Uses DIAMOND tower type three-dimensional circulation duct structure. With the United States GE infrared sensor: 5 seconds speed infrared sensor technology, so that the machine at any time to maintain proper operation.
Both sides of the fuselage are equipped with handles, the depth of the handle is shallow, and it is not easy to use. Even when moving the purifier, there is a little pain in the hand.
After the KJ350 air purifier is powered on, the display on the front door panel of the camera will show the value, which can show the running mode of the machine, air quality indicators such as PM2.5, VOC, machine running wind speed, timer shutdown countdown, filter life, etc. And so on makes the user at a glance.
In addition to the function buttons on the touch screen function area, it can also be operated via the remote controller. Allows the user to easily control the remote air purifier on the sofa, but this small function is convenient for many users.
Summary: Diamond brand KJ350 air purifier, product packaging still use the same series of packaging design, so that after the user to get the machine, the outer packaging paper skin will not be damaged due to transport. The product name and the appearance of the product can be clearly seen on the packaging. The handles on both sides of the package are convenient for users to move the product. The internal packaging is even more orderly, so that the transportation process will not cause damage due to misalignment of the accessories. Tough body design is a consistent feature of the diamond brand. The unique tower purification structure can speed up the indoor air purification cycle. The use of the US GE infrared sensor can accurately inform the user of the current air quality changes. The only drawback is that there is no pulley at the bottom of this model of the diamond KJ350 air purifier, which makes it difficult to move the product. The shallower handle position will cause the operator's hand to feel pain, and it is hoped that the engineers will use the design. Then work hard to solve this problem.
Filter system dismantling
Poor quality air is usually filled with harmful substances such as bacteria, mold, allergens, and formaldehyde. These harmful substances can easily cause health problems for the body. The diamond KJ350 air purifier performs high-efficiency filtration of these harmful substances and achieves zero-ozone emissions, with an extra-large amount of air cleaned per hour.
Because the user is guaranteed to use the diamond KJ350 air purifier before, in order to ensure the tightness of the filter, it will be wrapped in bags. This protects the filter from damage such as dust and reduces its life.
P21 high efficiency filter can effectively filter dust, bacteria, allergens and other particles to protect the post filter. E10 filter, double structure, filtration efficiency ≥ 90% The material is electrostatic melt-blown PP + PET, weight 0.9 kg, size is 318 mm * 318 mm * 113 mm, unfolded area of ​​4.2m2. The recommended replacement period is 3-6 months (please refer to remaining health and filter replacement prompts, and according to actual conditions, timely replacement)
High-efficiency activated carbon filters can efficiently absorb and decompose harmful gases and odors such as formaldehyde and toluene. Its specification parameters are CADR formaldehyde 227 m3/h and CCM formaldehyde F4 (>5000 mg). The high-efficiency activated carbon filter is made of high-performance modified activated carbon, weighs approximately 3.0 kg, and measures 318 mm * 318 mm * 113 mm. It is recommended that the replacement cycle be 3-6 months (please refer to remaining health and filter replacement tips, and According to actual use, timely replacement)
Summary: The use of double-packed diamond KJ350 air purifiers provides better protection during transportation. Equipped with PNL high-efficiency five-stage filtration module, especially a long-term composite cylindrical activated carbon filter weighing up to 1.35KG, it can effectively remove indoor contaminated air. It is equipped with a liquid crystal display that can tell the user the current air conditions in real time, so that the purifying effect becomes clearer. However, in the above figure, the internal design of the model is still relatively simple, and there are only two filter screens, so that its effectiveness is not reduced. Next Xiaobian will be everyone's evaluation of this purification performance, so stay tuned.
Purification capacity test
Ordinary home indoor purification effect is the key to determine the quality of air purifiers, this time we choose 25 square simulated home environment for testing. After igniting four cigarettes in a closed room to make it fully burned, second-hand cigarettes fill the room. Using the tester to test the PM2.5 index in the air, PM2.5 was measured every 10 minutes to check the time effect of this air purifier at different times.
After the cigarette was burned, the odor diffused into the room. Using the air quality tester, the indoor air pollution index found that PM2.5 was as high as 153165, which was a very heavy level of pollution. When I entered the test room, I felt that my breathing was not smooth and the air was very turbid.
Turn on the air purifier for testing
The air purifier is turned on, the wind speed is adjusted to the maximum gear mode for purification test, and the simulated home environment is checked every 10 minutes.
After 10 minutes of decontamination, the air quality in the room has clearly improved. The 0.5 μm particle concentration of PM2.5 has dropped to 113,398.
After 20 minutes of decontamination, the air quality of the room is already in good condition. The 0.5 μm particle concentration of PM2.5 has dropped to 46,055.
After 30 minutes of purification, the air quality of the room has reached a good state. The 0.5μm particle concentration of PM2.5 has dropped to 31427.
After 40 minutes of purification, the air quality of the room has reached a healthy level. The 0.5 μm particle concentration of PM2.5 has dropped to 10162.
Using a tester to test the change in the concentration of particulate matter in the room, it was found that the Diamond Brand's purification capacity of this air purifier can reduce the 0.5-micron particles to a healthy level in about 40 minutes.
Summary: As can be seen from the above picture, the PM2.5 index for the ten minutes is 113,398, the PM2.5 index for the twenty minutes is 46,055, the PM2.5 index for the thirty minutes is 31,427, and the PM2.5 index is forty minutes. It is 10162. At 40 minutes, the test space had almost no smell of cigarette burning, and in the coming time the air quality was estimated to be even better than before the cigarette burned. In general, the purification efficiency of the diamond brand KJ350 air purifier is still very good. However, compared with Xiao Bian's previous evaluation of the product, the product's experimental results in this link can only be said to be very general, than the lack of more than the next.
Airflow and noise tests
Air volume test
Noise test
Diamond brand KJ350 air purifier enters the air at the top of the machine body and winds out on both sides of the machine body. It can ensure that in the state of multiple filters, the air volume can be filtered quickly without reducing the air volume. This air purifier has 3 levels of air flow, which are a 50m3/h air volume in 1st gear, 150m3/h air volume in 2nd gear, and 350m3/h air volume in 3rd gear. And use the outlet side for testing. Although it does not show the amount of wind that actually exits the wind, it can feel the effect of wind on one side of it.
Diamond brand KJ350 air purifier outlet noise test
Summary: In the testing process, the diamond brand KJ350 air purifier emits low operating noise at low air volume, and the output air volume is not weak, and the performance is very prominent. However, at the maximum working air volume, the output air volume of the Diamond KJ750 air purifier is weaker than similar products, but the noise is much better.
Power test and summary
Power test
The air purifier must be used for a long time, so the power used is particularly concerned. This time we selected the air volume of 50m3/h, 150m3/h, and 350m3/h for testing. Test them separately to see how much power they are working on.
Diamond brand KJ350 air purifier instantaneous power test
Summary: Diamond KJ350 air purifier test results in this power consumption is very good, low energy consumption, power saving but not effort. The level of power consumption in the same category is at the top.
Edit Comment: The diamond brand KJ350 air purifier is built by the military, and the national military standard certification production line is manufactured using JIS all-metal body and 0.8mm high-strength steel plate. The interior of the fuselage uses environmentally friendly ABS plastic. Both the metal body of the rigorous and stable, plastic top cover and the streamlined sense of the inner frame. Small but complete. The prominent power consumption and noise level of the diamond brand KJ350 air purifier is enough to mask the small defects of its air output. The 40-minute quick cleansing ability will rejuvenate your home and stay away from the bacteria-filled air, which is good for us and beneficial to the next generation.
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