Dreame first made vacuum cleaner products, and established a very good market reputation with excellent quality. Now it has expanded the product line to other cleaning products. Sweeping robots and vacuum cleaners have always been good partners for dust removal at home. The latest D9 sweeping robot launched this time is Dreame’s first real laser navigation sweeping robot. Not only has a good performance in parameters, but also equipped with the latest SLAM algorithm to optimize the path planning ability.
And the name of the D9 sweeping robot this time is also quite moral. A few years ago Dreame gained a good market reputation with the V9 handheld vacuum cleaner and became popular in one fell swoop. And this time Dreame’s naming of D9, whether it also hopes that it can debut is the pinnacle. For a while, I have a little more expectations for its performance.
Let’s take a look at the specific performance of D9.
Appearance details
▼The accessories included with the D9 are very simple. Including host, charging base, side brush, power cord, detachable water tank, and a manual.
▼Let’s take a look at the host first. The diameter of the host is 35cm. The appearance still uses white as the main color, which is also a more popular color scheme. The silver metal stripes on both sides of the laser sensor play a decorative effect. In addition, the white this time is not the traditional bright white, but closer to a matte milky white. Visually, it makes people feel more gentle.
▼Three physical buttons are designed at the front of the top, namely area cleaning, switch and recharge button. D9 can set the cleaning area in the Mijia App. After the setting is successful, use this physical button to quickly clean the planned area. This small design is quite intimate.
▼The raised part on the top of D9 is the LDS laser sensor. A red protective cover is used for decoration inside. The red decorative cover instantly broke the dullness of the whole, making the whole machine agile. This time D9 is equipped with the latest 3.0 version of LDS lidar navigation technology, and a new SLAM algorithm is built in. The speed and accuracy of the sweeping robot’s mapping have been significantly improved, and the path planning is also more efficient.
▼Collision sensors are built in on both sides of the front. It can help D9 better avoid obstacles and prevent machine failures caused by repeated collisions.
▼The front crash barrier has a good resilience. While ensuring that the home is not damaged, it can also provide more accurate data for the drawing of the sweeping robot.
▼Open the top cover, the layout inside the machine is also simple and clear. The transparent design of the dust box can be used to more intuitively observe the storage state of the internal garbage. And the dust box design is obviously widened and enlarged, and the capacity has reached 570ml. The large-capacity dust box can reduce the number and frequency of garbage cleaning, which is extremely friendly to lazy people.
▼The soft cleaning brush has become the standard equipment of the sweeping robot. The soft hair on the front can be used to clean the dust remaining in the dust box and filter, and the open blade on the back can be used to clean the hair entangled on the roller. It can be directly stored in the card slot of the fuselage, avoiding loss in the later period, which is very intimate.
▼The dust box does not use the more common handle design, but by pulling the spring buckle in the middle, using the thumb and index finger to fasten the slot and then take it out directly. The whole disassembly process is still very simple and smooth.
▼The filter system still uses the commonly used HEPA filter, which can filter out 0.3 micron dust and prevent secondary pollution.
▼Compared with the simplicity of the front, the structure of the bottom is relatively more complicated. In addition to multiple sensors, there is also a large rolling brush in the middle. The blank space below can be installed with a water tank.
▼The large rubber roller uses a spring structure inside, which enables D9 to climb over obstacles of about 2cm. The concave on the surface of the roller can increase the friction when climbing, and can also help the robot get out of trouble more easily when it is trapped.
▼The roller brush in the middle will inevitably entangle the hair in the later use, so the convenience of the later cleaning is particularly important. Pull the button on the protective cover inward to remove the outer protective cover, and then remove the roller brush.
▼The roller brush adopts the alternate distribution method of soft hair and rubber, which can clean the gaps of the floor more deeply, and also can better protect the floor from scratches.
▼The water tank attached to the D9 uses an ultra-thin design, but the capacity has reached 270ml, which can meet the mopping area of 200 square meters. The official claimed that the cloth is antibacterial material, and the antibacterial rate reached 99.9%.
▼The micro motor and water pipe can be seen inside the water tank. Through the App, three levels of water volume adjustment can be realized to meet the cleaning needs in different environments.
▼The charging base looks quite technological. And it’s very small, it’s easy to find a place in the home. However, this time the charging base did not include the function of storing cables, which is a pity.
App experience
▼D9 has joined the Mijia ecological chain, so it can be controlled through the Mijia App. The connection process is also very simple, follow the system prompts to complete the operation quickly.
▼After entering the initial page, the App will have some humanized small details prompts.
▼When the sweeping robot is working, you can view the motion trajectory of D9 in the App in real time, and you can also pause the design of the forbidden sweeping area in the middle. In this way, you can also grasp the cleaning dynamics of the sweeping robot in real time when you are not at home, which is quite convenient to use.
▼After about forty minutes, the sweeping robot completed the cleaning of the whole house. It can be seen from the picture that the barrier-free areas in the home have basically been cleaned, leaving almost no sanitary corners. The whole trajectory is also relatively orderly. This is also the advantage of LDS laser navigation phase.
▼In the setting interface, the parameters of the robot can be personalized.
▼In addition, the most practical function in the App is to set the prohibition of clean and mopping area. The setting of the virtual wall can be completed by sliding the screen by hand. It is much more convenient than the previous method of placing physical virtual walls.
▼After several inspections, D9’s response to the virtual wall is still quite sensitive. Every time I approached the edge of the penalty area, I turned around and returned.
▼The service life of consumables can be checked at any time in the App, reminding you to replace them in time.
Cleaning experience
1. Path planning and obstacle recognition
▼Thanks to the latest SLAM algorithm, D9 can accurately restore the layout of the home and plan the cleaning path by itself. When cleaning in an open area, D9 moves in a “bow” shape. Compared with the random cleaning mode, this cleaning travel mode can record each walking path, without repeating cleaning, and it is not easy to leave a cleaning dead corner.
▼When facing a Z-shaped wall corner, the D9’s laser navigation sensor can accurately identify the dead corner and make a detour without touching the wall.
▼In most cases, only one side of D9 will touch the wall. This is also the main theoretical basis for the popular unilateral brush. In the actual cleaning process, D9 can accurately walk along the wall, and the side brush can sweep the dust under the door crack. These sanitary corners are often the most overlooked by manual cleaning.
▼It’s not uncommon for a robot cleaner to clean up randomly before hitting furniture. D9 is much better in this regard. After identifying the obstacle ahead, they basically turn around and leave, re-planning the path.
▼When detecting that the front table leg space is too narrow and unable to pass, D9 will no longer force probing. Instead, it cleverly avoids the arc of the space at the bottom of the table.
▼D9 is optimized in terms of noise. In the actual test, in the normal mode, the noise level is 66dB, which is not bad.
2. Ability to overcome obstacles and escape difficulties
Overcoming obstacles and getting out of trouble are extremely important capabilities of sweeping robots. These two abilities are not good, we may have to be ready to rescue the trapped sweeper.
▼When facing the 1cm thick short-pile carpet in the home, D9 is almost flat on the ground without any pressure.
▼When facing a wool carpet with a thickness of 2 cm, you can see the obvious shock of the fuselage. But it still jumped up. When the bottom sensor recognizes the carpet, D9 will automatically turn on the booster mode. Increasing the suction power makes it easier to deal with dust mites and hair that are easily adsorbed on the carpet.
▼The previous sweeping robot at home will get stuck there when it encounters the leg of the table. At this time, it can only wait for someone to rescue it. And D9 will test in multiple directions, using the lever principle generated by the side brush to get out of trouble by itself.
3. Cleaning ability
▼D9 has a vacuum suction of 3000Pa. From the data alone, it has reached the top configuration of the current mainstream sweeping robots. There is no pressure on cleaning pet hair.
▼Clean up biscuit crumbs, bread crumbs and other particles, it can also achieve a good cleaning effect, almost no phenomenon of flying particles.
▼When cleaning the smaller particles of cat litter, some of the cat litter leaked from the gap of the bottom brush, and about 10% remained. It needs to be cleaned twice.
▼D9 is also equipped with a large lithium battery of 5200mAh. A full charge can meet the cleaning needs of an area of 250 square meters. After cleaning the whole house, you can see that the dust mites and floating hair are piled up in the middle of the dust box, and the cleaning effect is obvious.
▼The garbage in the dust box is mainly floating hair, which is also the culprit of rhinitis. I have to say that for pet families and patients with rhinitis, it is really necessary to equip the home with a sweeping robot.
4. Mopping ability
▼D9 is also equipped with a 270mL smart electronically controlled water tank. In the App, you can set the high, medium and low water output levels, which is also the biggest advantage of the electronically controlled water tank. In actual use, the dirt on the ground can be wiped clean by using the medium water output once.
▼The fluff on the surface of the new rag is very delicate, which can better protect the floor. The wipes can be washed and used repeatedly, but we hope that disposable wipes can also be introduced in the future.
5. Clean the gap
▼The thickness of the D9’s body is less than 10 cm, and it can basically get in and out freely when dealing with the gaps in the bottom of the TV cabinet, coffee table, and sofa.
▼The dust under the bed can be easily dealt with. This way we don’t have to lie on the ground to clean these places.
6. Recharge function
▼D9 will automatically return to the charging base after cleaning or when there is no power in the middle. The speed is quite fast when returning, and the positioning of the charging base is accurate enough.
After opening the breakpoint resume clean function. After D9 is fully charged, it will return to the place where it was not cleaned last time to continue cleaning.
Conclusion
After several days of use, this Dreame D9 sweeping robot still brings a good experience to the author. The main advantages are as follows:
- The LDS lidar + SLAM intelligent algorithm allows D9 to maintain high accuracy and efficiency in the process of positioning and mapping, and also provides a guarantee for accurate cleaning in the later stage.
- The 270ml electronically controlled water tank controls water accurately. During use, the water output can be adjusted in real time according to the cleanliness of the ground.
- The App has rich functions and simple operation. After joining the smart home system, you can use the voice assistant to control it later, completely free your hands.
Of course there are some shortcomings:
- There are few accessories included this time, only one brush head and one filter element, no spare parts are included. I still hope that more accessories can be attached in the future to help consumers reduce the cost of later use.
- The charging base has no cable storage function. The cable can only be tied up with a strap and placed on one side, which affects the appearance a little.
But in general, I think there is still a lot of sincerity in the upgrade of the Dreame sweeping robot. D9 is still a very significant improvement over the sweeper I used before. Whether it is noise control or algorithm modeling, the actual performance is a perfect upgrade for me.
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