15 Best robot vacuums
Maintaining the cleanliness of every home is the essential responsibility of every homeowner. With this list of 15 best robot vacuums that works with Alexa they can do vacuuming, mopping, mapping and sweeping. Although there are many things to consider before getting a robot vacuum for your home its important you be specific what you are looking for in a vacuum cleaner.
Good news is most robot cleaners provide a great job on all floors; some of them have extra features such as mapping or restricted areas, self-emptying base, best for pet hair, laser mapping, and drop-sensing technology among other features. We picked the best models that would leave your home clean with smart technology of Alexa, Google Assistance and other Smart Apps.
Let us check out the top 15 best Alexa robot vacuum cleaners for your home.
1. ECOVACS Robotics – DEEBOT N79SE App-Controlled Self-Charging Robot Vacuum.
This smart gadget is compatible with Amazon Alexa and Google Assistance. Simply start, stop or charge your DEEBOT with just a voice command. It comes equipped with two sides brushes, a main roller brush and a powerful suction that is capable of cleaning all types of floors, including bare floors and carpets. You can simply schedule cleaning and go about your business, and you come back to a cleaned house. Also have your DEEBOT clean an entire floor in AUTO MODE or tackle a messy spot in SPOT MODE or clean just the edges with EDGE MODE you got choices.
With ACOVACS App, you will get all the features in your DEEBOT N79SE. Starting, stopping, charging scheduling, choosing the different cleaning mode (MAX, SPOT, EGDE) are some of the functions accessible via this app. This app has a consumable section, which also tells you the life of your filter, main brush, and side brushes. Within the app or with the remote you can also schedule cleanings.
The unit features a battery pack of 2600mAh that will provide over 110 minutes of cleaning runtime. The ECOVACS DEEBOT N79S robot vacuum is also packed with anti-collision technology and an anti-drop sensor, which ensures it, can operate without your supervision in a safe manner. The vacuum can also clean in a more holistic manner compared to traditional solutions by getting under furniture and into hard-to-reach areas.
This DEEBOT is a great value because it is what I would call an economy robotic vacuum based on its price, but compares more favorably to the models at the high end of the price range in terms of features. Comes with a one-year warranty. The package has a charging dock, four side brushes, two high efficiency air filter, one remote control w/ battery), one cleaning tool.
2. Roborock S6 Robot Vacuum Cleaner and Mop with Adaptive Routing, Selective Room Cleaning and Super Strong Suction.
Guided with the laser radar that offers much effective navigation at home. It won the best robot vacuum award 2019 of trusted reviews. This robot has an impressive suction power of 2000Pa that offers excellent job when vacuuming.
Supports some other added features like Amazon Alexa integration, an app, extra filter, and mopping. Also comes with a charging docket water filter, power cable, air filters, and mop clothes among others.
The robot vacuum laser guidance system helps it operate in dark room unlike other robots that cannot operate under low light. The robot also has a mopping feature that works great but it cannot replace the human handwork touch but you will like the service.
Thanks to the engineering, this robot comes with 14 types of sensors to ensure S6 is able to navigate your home smoothly and thoroughly. These sensors include precision accuracy laser rangefinder, infra-red cliff sensor, that constantly scan for drop such as stairs, carpet sensor that trigger a power boost for better cleaning on carpet among others.
Read Also: Roborock S6 Vacuum Cleaner Review
This robot can be used manually or programmed via an app that helps schedule cleaning which takes minimal time to do. It is also a quieter vacuum on carpets and even better on hard floor thus not an annoyance to have it run near when reading of having a day nap. The Roborock App focuses on vacuum operation and setup alone leading to much less delay, substantially better maps, and an overall more responsive user interface.
One amazing feature of the S6 is the ability to direct the robot to clean a specific room rather than requiring you manually draw a cleaning zone as you would with the previous S5. This means you can have the robot clean the carpet and entry hallway every day, but leave the rest of the floor on every other day program.
3. iRobot Roomba 960 vacuum includes Wi-Fi connectivity, camera navigation, voice control, compatible with Alexa.
These smart features help you control it by a button on your phone or just asking your smart assistance to handle the job for you. The build in camera and sensors map your rooms so it will never miss a spot when vacuuming. After a run time of 75 minutes run time, it will head back to the charger for recharge.
Roomba uses the high efficiency AeroForce Performance Cleaning Technology to deliver a well-maintained vacuum suction and rubbish extraction no other vacuum has done. The AeroForce System uses a combination of three-stage cleaning system that delivered the best results of any of the robot vacuum in the market. This breakthrough technology delivers the ideal balance of vacuum suction and debris extraction. With its high efficient filter, it captures 99% of all the allergens, pollen and particles as small as 10 microns.
Roomba has a soft touch bumper; this sensor detects walls and obstacles and will slow down when approaching them to help prevent damage to the furniture and wall. Additionally, the molded, soft touch bumper cushion and contact made between Roomba and your furniture, walls and other objects.
This robot has an ergonomically designed handle for a convenient that allows you to carry it with ease around the room. The simple operation of press CLEAN button gets the gadgets work, or you press CLEAN in the iRobot HOME App to start Roomba anytime from anywhere. You can also allow the Roomba 960 and Braava jet to automatically work in sequence with the Imprint Link Technology.
Product package includes: a Roomba 960 Wi-Fi Connected Robot Vacuum, a Home Base Charging Station, 1 North American Line Cord, one Extra AeroForce High-Efficiency Filter, one Extra Side Brush, one Dual Mode Virtual Wall Barrier (2 AA Batteries included), Owner’s Guide, Documentation Package.
4. iRobot Roomba 675 Robot Vacuum-Wi-Fi Connectivity, Works with Alexa, Good for Pet Hair, Carpets, Hard Floors, Self-Charging.
Really a great vacuum! You can control it through an app and have it vacuum while you are at work! Clean carpets and hard floors efficiently with this iRobot Roomba 675 robot vacuum. Its smart sensors and three-stage cleaning system helps to clean both carpets and hard floors. The robot starts with the dual multi-surface brushes and edge-sweeping brush will be loosening and lifting hair, dust and dirt.
The Wi-Fi connectivity lets you schedule activation from anywhere using a smartphone or smart home assistant. Connecting this robot to your home network, you will be able to control it using the home iRobot Home App. Helping you to set regular cleaning schedules. Synchronizing this robot with Amazon Alexa and Google Assist enables, you use command control. This robot vacuum provides automatic docking and recharging for hassle-free convenience once it is done with cleaning.
Another feature that makes this gadget amazing is the ability to easily maneuver around with ease. Edge Sweeping specially designed at a 27-degree angle to sweep debris away from edges and corners for thorough cleaning.
Like many other Roombas, this device has a low profile of 3.5in, which helps it make tight turns. This unit will move in the room until it bumps into an object then it will change the direction and continue on another path with the help of its Intelligent Navigation.
The Roomba 675 robot vacuum is an ideal robot that shows up in Roomba’s budget level of cleaning gadgets. Even though it does not brag all the impressive features, some of the more advanced units offers. This is a budget-friendly robot cleaner unit that will provide amazing performance with a reliable device. With all the feature that comes with it, this easy to use robot vacuum will leave, your floors clean and you feeling satisfied.
5. iRobot Roomba 890 Robot Vacuum- Wi-Fi Connected, Works with Alexa, Ideal for Pet Hair.
This is another amazing brand of Roomba 800 series; this robot does a great job of cleaning that will impress you and value for the money. The robot app works great and it will let you know the status of the Roomba once the job is complete. Using a full suite of smart sensors, this Roomba robot vacuum scans you place at 60 interval per second to map your home and help thoroughly clean your floor.
The navigation is effective when dealing with obstacles through its built in sensors like drops cliff detector sensors that helps the robot avoid stairs and other drop offs. Use with the included dual mode virtual wall barrier for more control over where your robot cleans. This robot is compatible with Amazon Alexa and Google Assistant that simply you to simply command Alexa or Google assist to start, stop, or dock your robot. The Wi-Fi connection offers you an opportunity to clean and schedule anytime, remotely with the iRobot HOME App, you will be able to get notifications, and monitor cleaning cycles from the app.
With Advanced performance, this robot is best for pet hair and Wi-Fi connected this Roomba 890 Vacuuming Robot loosens, lifts, and suctions dirt with up to 5x more air power. Perfect for homes with pets, the Roomba 890 features tangle-free brushes and a patented AeroForce 3-Stage Cleaning System, Tangle-free Multi-Surface Brushes and Power-Lifting Suction to pull in hard dirt, debris, and pet hair from wherever it hides and a high-efficiency filter for a maximum clean of your home. The edge sweeping brushes are designed at 27 degrees angle to sweep debris away from edges and corners making sure nothing is left untouched.
The robots is equipped with lithium-ion battery of 1800mAh with a full charge it runs for a maximum of 90 minutes then it goes back to the docking station for additional charge.
The package includes 1 Roomba 890 Wi Fi Connected Robot Vacuum, a Home Base Charging Station, 1 North American Line Cord, one Extra Aero Force High Efficiency Filter, one Dual Mode Virtual Wall Barrier, Owner’s Guide, Documentation Package warranty is guaranteed if its bought from an authorized seller.
6. iRobot Roomba E5 (5150) Robot Vacuum – Wi-Fi Connected, Works with Alexa, Ideal for Pet Hair, Carpets, Hard, Self-Charging Robotic Vacuum.
This Roomba E5 is one of the newest robots from iRobot. It is one of the most advanced robot vacuums packed with performance for powerful pickup of all the dirt it come across. Intelligent sensors guide the robot throughout your home. The setup is very simple just unpack the product, find a good spot for the charger, down load the apps and do the configurations.
The robot is compatible with Amazon Alexa and Google Assistant integration, which lets you control it with a voice command to do the cleaning. The Roomba Patented Dirt Detect Technology and Edge-Sweeping Brush works perfectly on dirtiest part of your home and gives them an extra thorough clean, its auto-adjust cleaning head changes its height to cope with hard floors and carpets automatically. The Roomba e5 uses Lithium-ion batteries and is set to last for up to 90 minutes before the robot automatically returns to the dock station and recharge after cleaning.
The robot design is a circular black plastic body that measure 13.3 inches wide and a height of 3.6 inches, this makes its ideal robot to fit under low clearance furniture’s in the room. For optimal performance, the edge sweeping brush and main brush should be replaced every 12 months although its Smart App will let you know the status of the brushes.
Another important thing is the charging dock; it should be placed against a wall with enough clearance for the robot to find it. With high efficient filters that facilitates trapping of allergens from the pets are also easy to replace and it is not recommended you wash them and reuse again. The product package contains 1 Roomba e5 Robot Vacuum, 1 Home Base Charging Station, 1 North American Line Cord, Owner’s Guide, Documentation Package.
With a decent app, great connectivity and many other features makes this iRobot Roomba e5 stand out, but there are plenty of competition at the price in the robot markets
7. Shark IQ R101AE with Self-Empty Base, Wi-Fi, Home Mapping Robot Vacuum With Auto Dock.
This Shark IQ robot has been unveiled by the Shark brand technology that promises to clean floors in autonomous manner to eliminate the need for any manual cleaning. With Alexa app and voice command app, you will just command the robot and have your room cleaned as you rest or enjoy your movie. The robot can return to the base, recharge and is able to pick up from where it left. These are enabled by home mapping feature. It lets you select which room to clean immediately or schedule a whole house cleaning.
Read Also: 5 Best Shark Robot Vacuums for 2020 Reviews
Powerful suction and a re-engineered brush roll combine with a high-efficiency filter that captures dust, dander, and allergens. Makes this vacuum best fit for homes with pets. With angled side brushes, they help dig deep into edges and corners for complete vacuuming of dust, dirt, and debris. Equipped with the power suctioning, the vacuum tackles large debris, small debris, and stuck-on dust on your floors and carpets.
The robot charge time & battery life features are amazing and you will love them this robot is an auto recharges and resumes. With 4-6 hours of charge time, the robot should give a run time of about 60 minutes on max power settings Note the run time depends on the mode it is running on.
This robot uses an array of sensors to navigate around walls, furniture legs, and other obstacles while it cleans. To prevent this Shark IQ R101R robot from bumping into objects or navigating to areas you do not want it to, use the included BotBoundary Strips. Clear cords and small objects from floors and open doors to ensure a complete map of your home. Equipped with cliff sensors they will help the robot from falling off ledges.
8. iRobot Roomba i7+ (7550) Robot Vacuum with Automatic Dirt Disposal.
This Roomba i7 robot is a robust and update to as far as hardware and design are concerned you will love. It is also the best robot for homes with pets shedding lot of hair. With high-efficiency filter, powerful lifting suction that delivers 10X improved pick up, and an AllergenLock bags that trap 99% of pollen, mold, and dust mites so they do not escape back into the air. The gadget works with ALEXA and add voice control by combining with an Alexa device. This Roomba i7 plus has the ability to empty its self as most other robots still have long way from being a perfect automated self-emptying vacuum robots.
The Clean Base is a combination charging stand and self-emptying bin, once it senses that the bin if to capacity it returns to its base. Empty itself and then continues back to where it left. The robot navigation technology is up to date the iAdapt 3.0 uses navigation vSLAM (visual simulation location and mapping) technology with multiple sensors, updated software, and the mounted cameras on top of the robot that helps it find its way around its environment.
This Robot uses Smart navigation and Dirt Detect technology that work together to clean carpets and hard floors on the entire designated room zone. With smart mapping for personalized & targeted cleaning is another way of saying the i7+ learns, therefore, will remember the layout of a house after mapping. Certainly, several robot vacuums imitate the Smart Mapping feature and do not give the best results.
After you purchase this robot, you will notice that its Smart Mapping feature is EFFECTIVE and it is EASIER to use. This robot vacuum revolves around cleaning specific rooms on a regular basis via voice command or use of Alexa feature, and then Roomba i7+ will get the job done quickly and fairly well for you.
9. Neato Robotics D7 Connected Laser Guided Robot Vacuum Featuring Multiple Floor Plan Mapping Works with Amazon Alexa.
This Neato Botvac D7 Connected robot vacuum cleaner has the ability to create “no-go lines” and room-specific cleaning from your smartphone. Upgrade your vacuuming to an advanced level with this newest featured Neato Robotics D7 that ensures you get perfect home cleaning services. The robot LaserSmart mapping and navigation, technology intellectually helps the robot navigate and map your house for a better clean.
This robot will cover more area in short time, moving around your house in a logically, instead of random pattern like other robots do. The new zone cleaning feature lets you clean precise locations in your home on demand with just a push of a button. You can Switch to Turbo mode if you need deep cleaning to speed up the brush and increase suction to pick up debris you cannot see.
In addition, the robot’s unique D-shape design gets into corners better than others do. If you have a large home, do not worry, it gets up to two hours of run-time on a single charge. In addition, if the robot needs more power it will automatically return to the dock charging station and head back out to finish the task.
It works great with Alexa Google Home Echo or by the app itself, which also works with your smart watch (Apple or Android) and integrates with other smart home systems. The robot manufacture brags of the ultra-performance filter, turbo mode, special Combo brush and the most advanced SpinFlow cleaning system makes this robot stand out when it comes to cleaning performance.
In addition, the top plate comes right up to uncover the dustbin, which could definitely stand to be a bit bigger. LED indicators on top show cleaning mode, battery/power & Wi-Fi connectivity, all good info to see, but the app is where this unit shines for optimal integration and performance.
10. ILIFE A9 Robot Vacuum Cleaner, Mapping and Navigation, Sustained Strong Suction and Cleans Hard Floor to Low-Pile Carpet.
With its companion remote, the iLife app adds extra level of control. On top of the basic controls included on the physical remote, the app installed displays the current cleaning/charging status, surface area cleaned, cleaning duration, battery level, and a floor plan map. It also provides a detailed vacuuming event and tracks the consumption level of the filters and the brushes.
This A9 robot boast shiny record vinyl outer surface and powerful internal controls to support a smart cleaning experience at home. The A9 robot has the ability to “see” its surroundings thanks to the inclusion of a live-vision camera and an Alexa-compatible speech recognition system allows the bot to “hear” orders from owners and interpret given commands. Taking this technology, a step further, the A9s include an artificial vibrating water tank for sweeping and mopping.
The A9 supports four cleaning modes, all of which are activated remotely. In Auto mode, the robot plans a track through the room and cleans in a zigzag pattern. During these jobs, it will automatically detect areas it has missed and go back over them.
In Spot mode, it will clean an area of concentrated dirt in a spiral pattern. In Edge mode, the A9 navigates until it recognizes a wall, and then cleans along its edges. Max mode increases the vacuum’s suction until you deactivate it and can be used whenever you need extra power in any of the other modes.
11. The Trifo Ironpie m6+ designed to sweep, vacuum and mop with an 1800Pa strong suction.
This robot is the smartest robot vacuum you will find in the market with great features. It has some of the same capabilities as the most expensive robot vacuums on the market. This vacuum is a great deal for those with hard floor to low –pile carpet.
The camera offers real-time monitoring with a visual navigation used to monitor the house and is the best home surveillance robot vacuum you will meet. It is also possible to record and save the videos this robot does not integrate with Alexa but works with Smart App control by Trifo Home APP.
The Trifo Home App is really well implemented. To do the connection with your camera you will have to read the QR Code in the vacuum by holding the phone to pair the two. Once done you will use the app as a remote to operate the gadget. The suction power of this Ironpie m6 can be regulated in three stages.
The lowest level it is very quiet and the highest level is sufficient for all types of dirt and pet mess. With two cleaning modes the zigzag and spiral cleaning, it is capable of sweeping up the most obtrusive dust, dirt hair and dirt fragments thanks to the 1800Pa ultra strong suction power for all types of floors.
Should the battery run below 15% or when it has completed a cleaning cycle, it will return automatically to the charging station, loads fully and start cleaning exactly where if left off. For optimum use, make sure you use in low pile carpet, tiles, laminated and hardwood floors. It is not suitable for high-pile carpets. Make sure that the robot has charged at least 5 hours to give you a 100 minutes run time.
12. Neato Robotics D6 Connected Laser Guided Smart Robot Vacuum – Wi-Fi Connected, Multi Floor Mapping.
By acquiring this Neato Robotics D6 Connected is the best investment you can make for your home cleaning. This D shaped robot vacuum cleaner guided by laser technology helps navigate the entire house, in rooms, closet, bathrooms, across hard floors, rugs, and carpets all without any additional hardware like some of the other robot vacuum.
The D-shaped body is designed to allow the robot to get right into the corners of rooms for powerful cleaning. When you connect this robot with your home Wi-Fi for Apps updates, you will be able to unlock the full potential of this gadget. Before you start to clean, it is advisable you create a floor plan.
The robot will start from charging station; map the whole room by the use of laser technology. Once map has been created, it will be using it to memories and will be using to navigate around your home. After mapping, you can now make no-go area to prevent it from entering these areas. The robot can store up to 3 maps.
Another cool thing about this D6 vacuum cleaner is that it can do cleaning even at very low light including nighttime this is helped by the laser technology it uses for night vision navigation. As you might have noticed, not many robot vacuums can do that. Additionally, it has the sensor that prevents it from falling. This sensor detects changes in floor levels and signals to the robots to stop proceeding.
The Neato Robotics D6 Robot Vacuum uses a battery that packs a lot of power. The manufacturer rates the battery life at 120 minutes on a full charge. In fact, rechargeable batteries have a limited life span; you will need to replace the batteries periodically. How long the batteries last depend how you use your gadget.
You may have to replace your battery after 6 months if the runtime degrades but the manufacture says they can last up 12 to 18 months. Every time the battery goes through a charge and discharge cycle, it loses some capacity. Note: That higher temperature also affect battery life. It is recommended you try to place your robot in a cool, shaded part of your home to reduce heat.
13.Samsung POWERbot R7260 Plus Robot Vacuum Self-Clean Soft Action Brush for Pet Hair, 5160Pa suction, Works with Amazon Alexa and the Google Assistant
With Wi-Fi connection, it allows you to remotely control this robot using your smart phone. Works with Alexa, Bixby, SmartThings and Google Assistance, an amazing robot vacuum right for your home! Right out of the box, it is pretty easy to get this up and running. The vacuum requires a place to put the home base that is the charging station.
The charging station requires a wall with about 1 foot clear per side and you will make it work easy. The Powerbot robot vacuums are “D” shaped with a flat façade, and a full width cleaning brush. The vacuums D shape design helps it to navigate and reach difficult areas, with an additional rubber blade that extends out to clean hard to reach areas like corners and along the edge of the walls. The 40X suction power delivers a more powerful cleaning on all floor type when compared to a conventional robot vacuum with a circular design.
The visionary mapping built in camera helps with navigation by allowing the robot vacuum to capture the room dimensions. This feature is offers the gadget to intelligently map the house. Once the mapping is done the robot will create a path for extensive cleaning that helps to cut down the cleaning time and with help of the installed app you will be able to see the cleaning coverage maps where the robot had done the cleaning.
The FullView Sensor 2.0 gives the robot the ability to precisely scan the area in front of the robot meaning it will never have problems going over obstacles and dealing with cables. The robot wheels are large enough to facilitate the robot move smoothly over obstacles like wire, rugs, or doorframes without stopping.
The Samsung Powerbot uses the CycloneForce technology that ensures extreme suction power for all a thorough clean. The vacuum generates a strong centrifugal force that circulates dust particles through the inner chamber. These dirt and debris is then separated from the air and sieved into the outer chamber. Hence helping to keep filters clean for a longer time to prevent clogging or maximum suction cleaning performance.
14. iClebo O5 Robot Vacuum with Smart Camera Mapping, Adjustable Suction, Good for Pet Hair, Wi-Fi Connect.
The iClebo O5 robot vacuums are low noise devices. Equipped with 19 obstacle detection sensors and spring action bumpers, they help the robot from damage to furniture or the wall, the jam-resistance sensors are built to increase efficiency plus deep corner cleaning. The iClebo O5 robot vacuum cleaner is Wi-Fi enabled and works with Alexa, Google Assistant App. You can command to start, stop, Back to Base and status function through Alexa & Google Assistance.
Remote/Scheduled cleaning is possible with Wi-Fi app that can help you start and stop the process as well as check the cleaning status. Another useful feature you can find with iClebo O5, with map editor function you can clean anywhere right from your smartphone or device and save those settings enabled or block, some desired areas from cleaning. Along with the 130-degree Deep Corner Camera Mapping System, it captures 20 frames per second for creating house map.
Smart auto charging function in the iClebo O5 assist in returning to its base station whenever charge is less, and to resume cleaning from the area where it stopped. The battery capacity of this robot is 5200mAh hours and it can work for 120 minutes in level 1 suction power once charged. Fall prevention sensor prevents the robot vacuum cleaner from falling downstairs or cliffs as it senses about 1.5″ height.
The product features rubber anti-tangle blades that reduces hair tangles in the brush, thereby helps in easy maintenance of the cleaner. With flexible cleaning, it has two modes. The TURBO function that automatically increases suction force according to the environment, under this mode the robot picks all the particles such as cereals, dirt, pet hair, sand, dust and many more.
The MOP cleaning mode is also called All-In-One system to use this mode simply attach Microfiber cloth and adjust setting and you are done. The package content contains: iClebo O5 Robot Vacuum, one Charging Station, one North American Adaptor Cord, one Remote Control (includes Batteries), one Cleaning Brush, one EPA Filter, one Side Brush, one Mop Plate,two Mop Pads, a User Manual, and Quick Guide.
15. Tesvor Robot Vacuum, Robotic Vacuum and Mop Cleaner, 1800Pa Strong Suction, Wi-Fi Connectivity, App and Alexa Voice Control.
Looking for an Alexa compatible robot vacuum cleaner for your home? Then Tesvor robot is here to meet all your needs. The device is equipped with an intelligent navigation system that enables it to detect any obstacles and avoid them. The Wi-Fi connection allows you to use the app anywhere and give your robot command with help of Google Home or Alexa voice control.
The Smart Mapping system of the robot vacuum helps it to navigate all the uncovered areas in your home and clean quickly and effectively. The Tesvor X500WF’s heavy-duty cleaning system featuring the brushless motor and V-shaped dual rolling brushes cleans your home comprehensively with high power and low noise. The anti-drop and anti-collision sensors ensure that your robot vacuum does not fall off the stairs and prevents it from bumping into your furniture.
The robot dimensions are 12.9X12.9X2.9 inches, this low profile design is enough to help the robot sneak underneath low furniture, assuring you get a far reaching and thorough clean at all time. With a batter capacity of 2500mAh, the robot has a run time of 100 minutes. Once done with the cleaning the robot will find its way back to the docking station and set itself up for recharge.
Shopping for a vacuum should not really give you a headache. In this review, you will surely find a match for your needs and budget. Most of the robots vacuum cleaners reviewed here have received lots of positive feedback for their fair price and efficient performance.
And if you have any feedback on the Robot vacuum cleaners, feel free to let us know in the comments section below.
Like this article? Then you would definitely love our other article about Facts About Inventions of Vacuum Cleaners