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Recently, there has been a trend in the vacuum-cleaner industry towards improving efficiency. This trend has been predicated on the perception that dust-collection bags allow dust back into the air after being processed by the vacuum cleaner.
Many manufacturers have different design approaches for <a href="https://gab.ai/vacuumlands">vacuum-cleaner</a> efficiency.
Current standards for determining the filtration effectiveness of cleaners have not been generally embraced. However, in recent years, there has been a definitive trend towards providing a basis for determining a vacuum cleaner's impact on Indoor Air Quality (IAQ).
Underwriters Laboratories, Inc. (UL) evaluates and lists several different types of vacuum cleaners. Among the many differences in features with each type of product is how dirt and debris are filtered and stored within the vacuum cleaner.
For example, there are several vacuum-cleaner designs that incorporate paper-collection bags. There are standard bags that have been used for many years, and there are bags that have multiple linings.
Some bags are treated on the inside so dust and debris do not stick to the liner. While these newer bags cost more than plain bags, they are often more effective in filtering fine particles.
Another type of vacuum-cleaner design incorporates a High-Efficiency Particulate Air (HEPA) filter. In order to achieve a HEPA rating, a filter must remove 99.97 percent of particles as small as 0.3 microns.
Several manufacturers utilize a variety of methods for removing particulate matter, and supplement these designs with a HEPA filter on the exhaust portion of the cleaner. Placing this filter on the exhaust portion allows other byproducts from operation, such as carbon dust from the motors, to be filtered. Placing the HEPA filter on the intake could result in the filter becoming clogged and ultimately reduce the efficiency of the vacuum cleaner.
<a href="https://www.pinterest.com/vacuumlands/">best rated upright vacuum cleaners</a>
High-velocity air currents
There is a cyclonic-design vacuum cleaner, which lifts dirt and particulates and filters them through high-velocity air currents that literally spin the dirt out of the air. These designs rely heavily on the motor and its ability to generate the required high-velocity air currents.
Other designs include vacuum cleaners that function by directing intake air downward into a water reservoir. As the intake air impinges on the surface of the water, the dirt and particulates become saturated and, because of their weight, remain in the water. The air is then recirculated out of the chamber and out of the vacuum cleaner.
For high-end vacuum cleaners, most manufacturers use a combination of the referenced cleaning features. Two typical combinations include paper bags upstream of a HEPA filter and cyclonic designs supplemented by a HEPA filter. Each of these types of combination units has advantages and disadvantages.
There have been initiatives to develop standards that objectively evaluate the cleaning effectiveness of vacuum cleaners, such as ASTM F11.23 and IEC 312 documents. Since these standards have not been embraced by the vacuum-cleaner industry, there is no independent yardstick to use as a basis of comparison. Consumers have become increasingly concerned over the performance of a vacuum cleaner with respect to its effect on indoor air quality.
In view of this situation and others, UL filed a Project Initiation Notification System (PINS) with the American National Standards Institute in June, 1996, for the development of a standard for Indoor Air Emissions of Equipment, Furnishings, Products, and Floor, Wall and Ceiling Treatments.
Shortly after filing the PINS, UL met with several organizations, such as the U.S. Environmental Protection Agency and formed a technical advisory committee for development of a consensus standard that involves all interested parties and a balance of perspectives. The proposed UL standard is intended to address all environmental effects that may result from vacuum-clean-er operation.
The technical advisory committee is focusing on limited subparts of the proposed standard, including general, equipment (vacuum cleaner), and indoor air-cleaning devices.
The vacuum-cleaner subcommittee met in April to seek a general agreement on the direction of the subpart of the standard and to review existing documents, such as standards, drafts, and test protocols.
As this committee continues to develop appropriate requirements, a consensus among regulators, manufacturers, and users will need to be achieved, resulting in vacuum cleaners that enhance the quality of indoor air, as well as meet the cleaning needs of consumers.
<a href="https://flipboard.com/@vacuumlands">https://flipboard.com/@vacuumlands</a>
Many manufacturers have different design approaches for <a href="https://gab.ai/vacuumlands">vacuum-cleaner</a> efficiency.
Current standards for determining the filtration effectiveness of cleaners have not been generally embraced. However, in recent years, there has been a definitive trend towards providing a basis for determining a vacuum cleaner's impact on Indoor Air Quality (IAQ).
Underwriters Laboratories, Inc. (UL) evaluates and lists several different types of vacuum cleaners. Among the many differences in features with each type of product is how dirt and debris are filtered and stored within the vacuum cleaner.
For example, there are several vacuum-cleaner designs that incorporate paper-collection bags. There are standard bags that have been used for many years, and there are bags that have multiple linings.
Some bags are treated on the inside so dust and debris do not stick to the liner. While these newer bags cost more than plain bags, they are often more effective in filtering fine particles.
Another type of vacuum-cleaner design incorporates a High-Efficiency Particulate Air (HEPA) filter. In order to achieve a HEPA rating, a filter must remove 99.97 percent of particles as small as 0.3 microns.
Several manufacturers utilize a variety of methods for removing particulate matter, and supplement these designs with a HEPA filter on the exhaust portion of the cleaner. Placing this filter on the exhaust portion allows other byproducts from operation, such as carbon dust from the motors, to be filtered. Placing the HEPA filter on the intake could result in the filter becoming clogged and ultimately reduce the efficiency of the vacuum cleaner.
<a href="https://www.pinterest.com/vacuumlands/">best rated upright vacuum cleaners</a>
High-velocity air currents
There is a cyclonic-design vacuum cleaner, which lifts dirt and particulates and filters them through high-velocity air currents that literally spin the dirt out of the air. These designs rely heavily on the motor and its ability to generate the required high-velocity air currents.
Other designs include vacuum cleaners that function by directing intake air downward into a water reservoir. As the intake air impinges on the surface of the water, the dirt and particulates become saturated and, because of their weight, remain in the water. The air is then recirculated out of the chamber and out of the vacuum cleaner.
For high-end vacuum cleaners, most manufacturers use a combination of the referenced cleaning features. Two typical combinations include paper bags upstream of a HEPA filter and cyclonic designs supplemented by a HEPA filter. Each of these types of combination units has advantages and disadvantages.
There have been initiatives to develop standards that objectively evaluate the cleaning effectiveness of vacuum cleaners, such as ASTM F11.23 and IEC 312 documents. Since these standards have not been embraced by the vacuum-cleaner industry, there is no independent yardstick to use as a basis of comparison. Consumers have become increasingly concerned over the performance of a vacuum cleaner with respect to its effect on indoor air quality.
In view of this situation and others, UL filed a Project Initiation Notification System (PINS) with the American National Standards Institute in June, 1996, for the development of a standard for Indoor Air Emissions of Equipment, Furnishings, Products, and Floor, Wall and Ceiling Treatments.
Shortly after filing the PINS, UL met with several organizations, such as the U.S. Environmental Protection Agency and formed a technical advisory committee for development of a consensus standard that involves all interested parties and a balance of perspectives. The proposed UL standard is intended to address all environmental effects that may result from vacuum-clean-er operation.
The technical advisory committee is focusing on limited subparts of the proposed standard, including general, equipment (vacuum cleaner), and indoor air-cleaning devices.
The vacuum-cleaner subcommittee met in April to seek a general agreement on the direction of the subpart of the standard and to review existing documents, such as standards, drafts, and test protocols.
As this committee continues to develop appropriate requirements, a consensus among regulators, manufacturers, and users will need to be achieved, resulting in vacuum cleaners that enhance the quality of indoor air, as well as meet the cleaning needs of consumers.
<a href="https://flipboard.com/@vacuumlands">https://flipboard.com/@vacuumlands</a>
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