In cordless vacuum cleaners, suction power is important, since the more it is, the less time you need to spend on cleaning. The review evaluates the real suction power of the Inse Z8 cordless vacuum cleaner.
Description of cordless vacuum cleaner
The vacuum cleaner is in a large box:
The package includes: a vacuum cleaner with a waste collection tank, three replaceable brushes with an extension stick, an air and filter inside the tank, a battery, a 27V/0.5A charging unit and instructions.
The following shows the main brush, the roller of which, in the best tradition of top-end robot vacuum cleaners, is made of silicone, and not plastic with fibers. The silicone roller helps to better sweep dust from different surfaces. The roller with its ” blades ” extends beyond the lower plane of the nozzle, which contributes to a better collection of dust and debris:
The following are the characteristics of the battery, its capacity, charging unit and landing place in the main unit of the vacuum cleaner:
The main control box is equipped with a dust bag with a filter nozzle inside and an air filter. To clean the filters, you need to resort to washing with water and a brush. Spare parts, in particular the battery, can be purchased in the store (should appear there).
The filter installed in the debris compartment is shown separately.
According to the instructions, the filter retains up to 99.9% of dust, which, in turn, approximately corresponds to the H13 class of HEPA filters, the cleaning efficiency of which must be at least 99.95%.
Rinsing the dust container and cleaning the filters is easy. The first is easily removed and rinsed with water, and the second is blown out with air or shaking off.
The INSE Z8 main brush can rotate in different directions. If you need to go along a certain perimeter, then the flexible hose used at the junction will allow you to do your plan without difficulty.
The weight of the device is 2.45 kg. You can’t call a heavy vertical vacuum cleaner, so cleaning should not be uncomfortable:
The weight distribution of the upright vacuum cleaner is made with an emphasis on the back, where the handle is located, but, nevertheless, it is not difficult to control it, that is, there is no understanding that the back is heavier than the front. On the contrary, it is convenient to hold in your hands and direct to different angles.
Specifications :
- Model: Z8
- Dust container capacity: 500 ml
- Discharge power: 23 kPa
- Operating modes: 4 (automatic, 10, 15 and 23 kPa)
- Battery capacity: 2200mAh/22.2V
- Declared power: 250W
- Working time: 15-40 minutes
- Charging time: 3-4 hours
- Main brush: silicone
- Filter type: HEPA H13
- Motor Type: Brushless BLDS
- Noise level (average): 70 dB
- Dimensions: 300x300x75 mm
- Weight: 2.45 kg
- Washing the container in water
- The presence of bulbs on the brush
performance
The product works in four modes: automatic, minimum, average and maximum – as shown in the photographs below and the corresponding indication is given:
Automatic mode does not quite correctly cope with power adjustment. I started cleaning from the carpet and when I switched to parquet, the power increased, then I continued on the carpet – the power dropped, but after 5 seconds it increased. For this mode, the initial place to start cleaning is important.
In the minimum mode, the cleaning time was 40 minutes, 17 of which were spent cleaning 44 m² – an apartment with carpets. As for me, a good result. It was especially convenient to start cleaning: I took the vacuum cleaner, turned it on and that was it.
In the maximum mode, the battery lasts for 15 minutes, during which 44 m² was also removed. A good indicator of autonomy at maximum mode. The named cleaning area is the effective area that was previously obtained from the navigation map from the robot cleaner. The robot vacuum cleaner finishes cleaning in about an hour. With a vertical vacuum cleaner, the same volume is removed four times faster (and not the fact that with less power). The benefit of the INSE Z8 cordless vacuum cleaner in this case is obvious.
The main brush has lights that turn on automatically when you start working. The photos below show the effectiveness of such bulbs – in dark corners and under the beds you will see how the cleaning process is going on.
When the main brush is working, the dust is pushed in, as it were, and the suction force lifts it up. This is because the main brush protrudes above the line of the large nozzle with its ” teeth “. Using such a nozzle is similar to sweeping dust:
Another important functionality of such a brush is the flexible connection of the hose with it, which makes it possible to remove dust along the intended trajectory without the need to clean everything.
The main brush helped to collect all the powder that spilled out in the bathroom:
Cordless vacuum cleaner does not take up much space in the apartment. The extension stick can be fixed on the main attachment in an angled position. It is better to support such a structure with a wall and put, for example, in a bathroom in a free and unused corner:
Another indicator that sometimes plays a big role is the noise level. Using the TicHearing app on a TicWatch smartwatch, below is the noise score of the Inse Z8:
The average is 73 dB. The specifications indicate 70 dB. In fact, we have a higher noise level, but on average the performance is comparable.
Suction rating
Aerowatt is the power required to create a pressure drop of 1 Pascal (Pa) with an air flow of 1 cubic meter per second (m³/s).
To estimate the suction power, you need to know the useful suction area (m²), vacuum (Pa), air flow rate (m / s) and multiply all three values. The effective area will be estimated using the area formula. The vacuum will be measured with a vacuum gauge. The flow rate is measured with an anemometer. The vacuum for almost all brushes will be constant. First, an estimate will be given for a long nozzle. Vacuum in each other nozzle will be specified separately. Almost all nozzles will have a different vacuum, which will create a result close to reality.
Further evaluation of the parameters is carried out in three modes: minimum, average and maximum.
Vacuum
For the case of a direct fit of the brush to the vacuum cleaner – from 3.28 to 9.31 kPa:
For the case of adherence to an extension stick inserted into the vacuum cleaner – from 3.5 to 9.7 kPa:
In each of the two cases, the indicator is approximately the same. It is also clear that the declared 23 kPa is not achieved, at least in my case. It is not worth trusting the figures declared by the seller initially, but not because he is deceiving, but because they can be nominal. Do not forget that the presented method is also far from ideal. As a result, we find that the maximum discharge of the Z8 model of a cordless vacuum cleaner is approximately 10 kPa.
For calculating the power of the main nozzle, in addition to those presented above (long and with a guide), the vacuum will be taken from 3.5 to 9.7 kPa, that is, according to the last option above.
For a brush with a bristle, it is worth evaluating the indicator separately, since part of the power will go nowhere through the bristles, as well as vacuum. For this case, the vacuum is – from 0.03 to 0.14 kPa:
As expected, the figure is less than the previous ones.
Square
In this subsection, the area will be calculated using known formulas.
The suction area of a small nozzle is 0.034×0.01=0.00034 m².
The area of the nozzle with pile (oval) is πab, where a = 0.038 m, b = 0.06 m, total – 0.007159 m².
The area of the main brush is 0.245 * 0.06, total – 0.0147 m². In this area, the bead is taken into account, that is, the effective surface is smaller by the cross-sectional area of the bead. It is necessary to subtract the cross-sectional area of u200bu200bthe roller. The roller is a cylinder, the diameter (one side of the rectangle) of which is 4.8 cm, the height (the second side of the rectangle) is 25.6 cm. Therefore, the cross-sectional area is 0.048 * 0.256, total – 0.0123 m². We get that the effective suction area of the main brush is 0.0024 m².
Airflow
The air flows are calculated for each of the three operating modes of the Inse vacuum cleaner with a long nozzle and guide, for the main and bristle brushes.
For a long nozzle – from 3 to 8.2 m / s:
For a long nozzle with a guide – from 2.7 to 4.6 m/s:
For a brush with pile – from 2.4 to 4.8 m / s:
For the main brush – from 2.8 to 3.1 m / s:
In the case of the main brush, the process for estimating the air flow was somewhat different. The main roller was removed when the airflow reading was taken. The data was taken from the guide nozzle. The maximum air flow was estimated.
It was possible to calculate intermediate options, but they would be academic in nature. For the main use cases of the Z8 presented should be enough.
Power in Aerowatts
The results of evaluating the power of the Inse Z8 cordless vacuum cleaner are presented below. We multiply the obtained values above:
For a long nozzle – from 3.3 to 26.0 avt
For a long nozzle with a metal hose – 3.2 to 15.9 AW
For a brush with bristles – from 0.5 to 4.8 avt
For the main brush – from 23.4 to 72.2 avt
This method (not mine, available on the ixbt website) has the disadvantage that the air flow could be estimated in error and that the vacuum force at each point on the suction surface is constant. The last point is valid for nozzles with a continuous suction surface, but for the main roller with a brush it is not entirely correct, but for lack of another option, an existing one was presented.
Conclusion
The operating time at maximum power of any such vacuum cleaners rests on the capacity of the battery. For special cases, you can use the economical mode, with which the discharge time will be large. You have to balance between the ease of the device and the time of work.
The second convenience of portable vacuum cleaners is their speed of use. To start cleaning, just press the button, and after it is finished, rinse the container so that the next time the process starts with maximum suction parameters.
A particular model from the review, the Inse Z8, does a good job of cleaning and, to a greater extent, keeping it clean. The floating head of the main brush makes it possible to clean along a given contour without problems and fears of entering an unnecessary area. The set includes three additional brushes and a guide tube, all of which are compatible with the vacuum cleaner in different combinations. The presented model from a not very well-known brand surpasses its more famous competitors, in which it is impossible to connect nozzles to the motor without an extension stick.
The operating time at minimum and maximum powers, as shown in the review, corresponds to the declared ones and amounted to 40 and 15 minutes, respectively. A worthy figure from an unnamed manufacturer.
In the car, such a vacuum cleaner will be indispensable: greater suction performance than analogues of famous companies, faster, better remove dust and dirt.
The model from the review is easy to use, powerful enough to clean small dirt, dust and restore order in a local place. Working for 15 minutes at maximum power allows you to take care of the apartment and keep it clean. If you need more time for cleaning, then you can solve the problem by purchasing an additional battery. Inse Z8 allows you to save time and not have to set up the main cleaning tool. The model is removed well and is inexpensive.
The store offers a good promotional code INSEZ80006 on the product page (or a similar coupon, since the promotional code for Russia is not applicable on Aliexpress now), which reduces the price of the Inse Z8 upright vacuum cleaner model – an assistant in the house and in the car. Delivery – from the Russian Federation.
A spare battery can be purchased from another INSE brand store. Its current price is high, but this is probably due to the fact that the delivery is from China, and there are always increased requirements for batteries during transportation. An additional filter (two pieces) is also sold in the second store.
