[PConline Professional Review] Summer heat, most people will choose to stay indoors, turn on the air conditioner to enjoy the comfortable temperature. Contaminants in the indoor air cannot diffuse and accumulate less, affecting our health. Indoor pollution in the summer requires people to find out early prevention and treatment in daily life. The air purifier can effectively purify the indoor air and completely filter the pollutants in the air to provide users with a clean living environment.
The diamond brand carries the memories of several generations and has developed a series of air purifiers with many years of electric fan motors and air duct technology. What will be a surprise to us if we are focused on improving the home environment for 50 years, and this time we come to our evaluation room is the KJ450 net doctor air purifier, designed specifically for pregnant women, children, the elderly, nano-effective filter killing Bacteria and viruses, the following brings you a review of this product.
Appearance and details
The editor received the KJ450 Net Ph.D. air purifier that received the diamond brand test and used a double wrap design on the shipping package to ensure that the product was intact during transportation. From the package, you can see the familiar diamond logo, body model and the front of the fuselage effect map.
Open the first layer of packaging can see the foam wrapped the entire body to prevent damage to the body during transportation and other issues. The instructions and the remote controller are placed on the top to make it easier for consumers to read the usage method before use and to operate properly to prevent problems such as operational errors.
With the interlocking of foam plastic, the entire fuselage is wrapped with a plastic bag to prevent the body from scratching and it truly achieves zero damage during transportation. The metal body itself is heavy. The weight of the whole machine is as high as 25.5kg. Take it out carefully.
By opening the plastic bag, you can see that the KJ450 air purifier uses a sturdy body made of JIS all-metal. 0.8mm alloy steel, high strength, high texture, no secondary pollution, longer service life. The appearance of the simple design of modern industry, Fang Zheng atmosphere.
The structural design of the air duct is improved, and the DIAMOND-type pressure sealing technology is adopted. The air is fed into the air at the bottom of both sides and the air is discharged at the top. The essence is more efficient. With the United States GE infrared Sensor: 5 seconds speed infrared sensor technology, so that the machine at any time to maintain proper operation.
Due to the heavier body, the bottom is equipped with four movable castors, so that users can easily move the air purifier without lifting. Equipped with locked caster function, fixed movement is more arbitrary.
Both sides of the fuselage are equipped with handles, the depth of the handle is shallow, and it is not easy to use. However, the daily movement needs can be handled with the bottom roller.
KJ450 net doctor uses full touch screen stereoscopic monitoring system, the core two-speed import sensor, high-speed induction. After the power is turned on, the air quality indicators displayed on the panel, the machine operating wind speed, and the filter life are at a glance.
In addition to the function buttons on the touch screen function area, it can also be operated via the remote controller. Not only that, this air purifier can also link the mobile phone APP to check the air quality and control the machine.
Summary: Diamond brand KJ450 net doctor air purifier, as far as possible in the product outsourcing to ensure that the product transport zero damage, to ensure that users receive the product will not have any flaws. In the whole body design, beautiful and stylish and practical, user-friendly design is user-friendly. The unique diamond technology is equipped with imported and excellent equipment, and the air purification capability is even more powerful. The editor will then evaluate the purification capabilities of the filter and related experiments.
Filter system dismantling
In order to guarantee the integrity and tightness of the filter before the user uses the diamond brand KJ450 net Dr. air purifier, it will be wrapped with a bag to protect the filter from dust and other damage to reduce the life.
Diamond brand KJ450 net Dr. air purifier, using PNL high-efficiency five-stage filter module, including primary filter module, advanced filter module, sterilization module, filter module and essence module, layer purification is more thorough. The filter can be withdrawn from the front to allow the user to replace the filter element.
The primary dust filter module is a polyurethane sponge that effectively filters out hair, dust, and floe, and is paired with an advanced filter module of the body. The filtering efficiency is better than 95%. At the same time, the fan assembly is protected and the back-end high-efficiency filter activates the activated carbon to extend the service life.
The filter module is H13 high-efficiency filter, and the aluminum gold frame ensures that the filter has enough tightness and stability. On the surface of the filter, a metal mesh protective cover is used. The filter size is less than 10 nanometers and the smaller bacteria are. Can also effectively intercept.
The purification module is up to 1.9kg of long-acting composite cylindrical activated carbon, using DOU-GAS double-effect mixing media, effectively removes more than 30 families of common harmful carcinogens such as formaldehyde and toluene. The design of the V-shaped groove effectively strengthens the contact surface between air and activated carbon and enhances the purification effect.
Summary: The filter is packaged and transported by the packaging bag. The transportation is not polluted and the service life is longer. PNL's high-efficiency, five-stage filtration module cleans layers of air. The turbid air can be refreshing. Equipped with a liquid crystal display, real-time to tell the user the current air condition, so that the purification effect becomes clearer. What about the combat capability of the air purifier? The next editor will evaluate the ability to purify it from relevant experiments.
Purification capacity test
The indoor indoor purification effect is the key to determining the quality of the air purifier. This time we selected a 25-square-foot 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 burned, the odor diffused into the room. Using the air quality tester, the indoor air pollution index found that the PM2.5 0.5μm particles were as high as 164,040, which was extremely heavy. When the editor entered the test room, he felt that breathing was not smooth and the air was very cloudy.
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 38955.
After 20 minutes of purification, the air quality of the room has reached a good state. The 0.5 μm particle concentration of PM2.5 has dropped to 12512.
After 30 minutes of decontamination, the air quality of the room continues to be in good condition. The 0.5μm particle concentration of PM2.5 has dropped to 3749.
Using a tester to measure the change in the concentration of particulate matter in the room, it was found that the purification capacity of the diamond brand KJ450 air purifier was able to drop 0.5 micron particles to a healthy level in about 20 minutes.
Summary: It can be seen from the experiment that the PM2.5 index for 10 minutes is 38955, the PM2.5 index for 20 minutes is 12512, the PM2.5 index for 30 minutes is 3749, and the PM2.5 index for 40 minutes is 1751. At 30 minutes, the test space had almost no smell of cigarette burning. In the later period of time, the air quality was estimated to be even better than before the cigarette burned. In general, the purification efficiency of KJ450 net doctor is still very good.
Airflow and noise tests
Air volume test
Diamond KJ450 adopts German imported technology fans, stable, efficient, silent and ensure efficient air output. At the bottom of the two sides into the air, the upper part of the wind out of the three-dimensional circular duct structure, the use of infinitely variable speed fan, no specific stalls. Therefore, we use 4 different air volumes for comparison. And test at the upper air outlet.
KJ450 net doctor outlet air volume test
Noise test
In addition to excellent purification capabilities, noise is also an important assessment indicator for air purifiers. Especially when working and sleeping, it is very important to keep silent work. The operating noise of the diamond KJ450 air purifier at 50m3/h, 100m3/h, 250m3/h, 450m3/h was tested below. (Maximum wind force at air volume of 450m3/h)
KJ450 net Dr outlet noise test
Summary: After the air volume and noise tests, it can be seen that the air output from the motor is strong, the purification capacity is very prominent, and the noise generated during the work process is relatively small. The sound is slightly noisy at maximum air output, but within an acceptable range.
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 to be 50m3/h, 100m3/h, 250m3/h, 450m3/h.
KJ450 net doctor instantaneous power test
Summary: The KJ450 purifier's power consumption test performed very well at low air flow rates, but the power consumption was high at high air volume tests. The instantaneous power at the 250m3/h range was 147.02w at 450m3/h. Instantaneous power is 228.44w. The power is basically consistent with the product's own rated power. It basically eliminates failures during work. However, in terms of power consumption, we hope that engineers can continue to improve and reduce the power consumption of the maximum air volume. In the future, the product will surely become more and more outstanding.
Editor's comment: The use of double-wrapped diamond KJ450 net Dr. air purifiers can provide better protection during transportation. Equipped with PNL high-efficiency five-stage filtration module, it weighs 1.9kg of long-term composite cylindrical activated carbon and adopts DOU-GAS double-effect mixing medium to effectively remove more than 30 common harmful carcinogens such as formaldehyde and toluene. 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. In terms of power consumption, the test results of high wind volume are not ideal, but the outstanding air purification ability is sufficient to make up for its small shortcomings. Focusing on improving the home environment for 50 years, the KJ450 air purifier, developed by the joint military enterprise, not only gave us full memories, but also gave us surprises from our national brands.
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