CA2332070A1 - Filtration vacuum differential monitoring device for vacuum cleaner - Google Patents
Filtration vacuum differential monitoring device for vacuum cleaner Download PDFInfo
- Publication number
- CA2332070A1 CA2332070A1 CA 2332070 CA2332070A CA2332070A1 CA 2332070 A1 CA2332070 A1 CA 2332070A1 CA 2332070 CA2332070 CA 2332070 CA 2332070 A CA2332070 A CA 2332070A CA 2332070 A1 CA2332070 A1 CA 2332070A1
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- Canada
- Prior art keywords
- vacuum
- air
- filter
- motor
- vacuum cleaner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/22—Mountings for motor fan assemblies
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/19—Means for monitoring filtering operation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a filtration vacuum differential monitoring device for vacuum cleaner provided with a filter, said device comprising an electronic control module able to generate a signal, and a pressure switch connected to said module and provided with two hoses, one hose being connected on the low pressure side of the filter, the other hose being connected on the high pressure side of said filter.
Description
FILTRATION VACUUM DIFFERENTIAL
MONITORING DEVICE FOR VACUUM CLEANER
Field of the invention The invention relates to a device able to tell the user when it is advisable to clean the filter to always get optimal performance.
Summary of the invention When using a vacuum, the filter often comes more and more cloged as dirt &
residues are vacuumed. This clogging fenomenon can be a nuisance to the performance of the machine, impeeding its ability to vacuum efficiently. Of course the speed of clogging of the filter is depending on the kind of material vacuumed depending on its size, weight, viscosity, humidity & its shape (geometry).
With a device according to the invention, it is possible to tell the user when it is advisable to go clean the filter in order to always get optimal performance.
MONITORING DEVICE FOR VACUUM CLEANER
Field of the invention The invention relates to a device able to tell the user when it is advisable to clean the filter to always get optimal performance.
Summary of the invention When using a vacuum, the filter often comes more and more cloged as dirt &
residues are vacuumed. This clogging fenomenon can be a nuisance to the performance of the machine, impeeding its ability to vacuum efficiently. Of course the speed of clogging of the filter is depending on the kind of material vacuumed depending on its size, weight, viscosity, humidity & its shape (geometry).
With a device according to the invention, it is possible to tell the user when it is advisable to go clean the filter in order to always get optimal performance.
2 0 More particularly, a device according to the invention is able to give this information before the user of the machine has felt a important loss in performance; Since there is the possibility of "accoutumance" to a slowly decreasing performance that the user will not notice immediately.
2 5 More particularly, the present invention relates to a filtration vacuum differential monitoring device for vacuum cleaner provided with a filter, said device comprising an electronic control module able to generate a signal, and a pressure switch connected to said module and provided with two hoses, one hose being connected on the low pressure side of the filter, the other hose being connected on the high pressure side of said filter.
The way this device work is that the differential pressure switch is set to a certain level of pressure. To this pressure switch 2 hoses are connected; One hose is connected to the lower pressure side of the filter (inside; clean side) and the other is connected to the higher pressure side of the filter (outside; dirt side). When the preset level is reached, the pressure switch will be activated and will send, via an electronic control module, a signal;
visual, vibrating or acoustical, indicating by that that the filter is getting clogged. This signal could be emitted on the vacuum power unit, on the handle of the hose, or on the air vacuum inlets or transmitted to a computer in the building. At this time the machine will recommend to the user to go clean (or change) the filter and/or empty the dirt basket. If the user does it, then he should notice the significant increase in performance from is vacuum.
The present invention will be better understood with the following description of preferred embodiment of the invention, especially with reference to the following drawings.
Brief description of the drawings Particularly preferred embodiments of the invention will be described hereinafter with 2 0 reference to the following drawings:
Figures 1 and 1 a are a perspective view of a vacuum cleaner that may be used with a device according to the invention ( in Figure 1 the cover and the head cylinder are not represented to show details of the inside);
Figure 2 is a perspective view of the vacuum cleaner of Figure 1 equipped with a device according to the invention;
2 5 More particularly, the present invention relates to a filtration vacuum differential monitoring device for vacuum cleaner provided with a filter, said device comprising an electronic control module able to generate a signal, and a pressure switch connected to said module and provided with two hoses, one hose being connected on the low pressure side of the filter, the other hose being connected on the high pressure side of said filter.
The way this device work is that the differential pressure switch is set to a certain level of pressure. To this pressure switch 2 hoses are connected; One hose is connected to the lower pressure side of the filter (inside; clean side) and the other is connected to the higher pressure side of the filter (outside; dirt side). When the preset level is reached, the pressure switch will be activated and will send, via an electronic control module, a signal;
visual, vibrating or acoustical, indicating by that that the filter is getting clogged. This signal could be emitted on the vacuum power unit, on the handle of the hose, or on the air vacuum inlets or transmitted to a computer in the building. At this time the machine will recommend to the user to go clean (or change) the filter and/or empty the dirt basket. If the user does it, then he should notice the significant increase in performance from is vacuum.
The present invention will be better understood with the following description of preferred embodiment of the invention, especially with reference to the following drawings.
Brief description of the drawings Particularly preferred embodiments of the invention will be described hereinafter with 2 0 reference to the following drawings:
Figures 1 and 1 a are a perspective view of a vacuum cleaner that may be used with a device according to the invention ( in Figure 1 the cover and the head cylinder are not represented to show details of the inside);
Figure 2 is a perspective view of the vacuum cleaner of Figure 1 equipped with a device according to the invention;
Figure 3 is a schematic view of the positioning of the device according to the invention in a vacuum cleaner as illustrated in Figure 2;
Figures 4 and 4a represent the flow of working air in the vacuum cleaner represented in Figure 1;
Figures 5 and Sa represent the flow of cooling air in the vacuum cleaner represented in Figure 1;
Figures 6, 6a and 6b represent the noise insulating material provided in the vacuum cleaner of Figure 1.
Detailled description of particularly preferred embodiments The principle of functionning of this device is that a differential pressure sensor (or more than 1 absolute pressure sensor) is (are) used.
A differential of pressure is taken from one and the other side of the filter as shown in figures 3 and 4) Advantageously, this invention may be used with a central vacuum unit having the following characteristics. A central vacuum unit is a cleaning machine designed to be installed permanently in an area and with one or more ducts connected up to vacuum system intlets in various zone all over the building. This machine allows you to be able to clean any areas of 2 5 this building with the use of a flexible hose or other dirt recuperation device connected to these intlets, provided these inlets are installed.
This central vacuum can be activated by simply inserting the hose in the central vacuum system inlets eelctrically wired to the central vacuum power unit, or by a switch on the hose, or in the dirt recuperation device, or by any other mean.
An enveloppe preferably but not exclusively made of sheet metal is provided.
This enveloppe is made of one or more distinct part. In the present design the enveloppe is made of 3 main part which is the prefered way of manufacturing; the dust collector to capt the vacuumed dirt & residues; the housing of the machine where the fan&motor (wich builds the vacuum required to attract dirt & residues) and control modules are located; and the cover of the housing.
Present state of products available on the market:
Customer of central vacuums are generally very satisfied with the level of power that a central vacuum offers and the practicality of use. Although, in an effort to make a better product for our customer, our recent research in marketing, showed us that a lot of our customer would really prefer if these central vacuums could show lower nuisance regarding the relatively high noise power level that these central vacuum generate.
With reference to Figure 1 a, the vacuum cleaner may comprise:
A Vacuum dirt laden air intake B Dirt & Residue basket 2 5 C Filter & filter cage housing bottom plate D Semi-annular noise dampening chamber center tower E Motor support plate & positionner assembly F Motor exhaust elbow G Motor & fan assembly H Cooling air plate (acoustic dampening material under the plate) I Cooling air "chicane" (acoustic dampening material on the inside) J Acoustic dampening wall mounting support 5 K Central vacuum clean vacuum air exhaust L Semi-annular chamber separator plate M Clips - Dust collector to housing N Dust collector handle Semi-annular central vacuum noise dampening chamber For sound generated from the vacuum air exhaust all manufacturer to our knowledge suggest that a straight silencer should be added to the pipping system, after the fan exhaust air is exhausted from the power unit, in order to lower the sound emitted by the central vacuum.
This is normally done with the use of a elbow to redirect the exhaust from a horizontal to vertical direction to take less horizontal space (wich is normally what is paid for in a building ($/sq.ft)) and then a straight silencer is added. There are 2 problems in doing it this way;
Strait silencer doesn't promote as much reflexion of noise than an annular silencer would (The 2 0 more probability there are for more reflexion on the open cell foam &
solid backing and so forth will allow for more absorbtion of the energy from the sound generated) Placing an elbow outside the envellope of the central vacuum creates an abrupt change in air direction that generates noise and that noise is transmitted throught the elbow's wall. This 2 5 noise is presently not dampened in conventional units, but it is in an innovative central vacuum because the airflow direction is changed in a acoustically dampened space.
Advantages This innovative new design in the central vacuum industry is showing significant improvements over what is available on the market prior to this invention. The advantages of this new concept are:
To applicant's knowledge, units built in this way, show unequaled lower sound level (proven by comparative tests made renowed University center in acoustic reaseach ) (see results of acoustic testing in appendix A) This annular silencer design provide a more efficient way, than conventional strait silencers placed outside the unit, to supress sound generated by a fan exhaust.
This annular design is so efficient in sound dampening that the central vacuum requires no added silencer to be a "quiet" central vacuum. Some results of tests made even presented higher sound power level when an added external silencer was placed on applicant's vacuum exhaust.
Horizontal building space required by the vacuum is designed to be lower than conventional units. Consequently cost of horizontal space used by applicant's machine could be lower.
2 0 This central vacuum requires less time to install since no added silencer and elbow is required on the vacuum air exhaust.
Description of the vacuum cleaner 2 5 This is a central vacuum unit: this unit is a cleaning machine designed to be installed permanently in an area and with one or more ducts connected up to vacuum system intlets in various zone all over the building. This machine allows you to be able to clean any areas of this building with the use of a flexible hose or other dirt recuperation device connected to CA 02332070 2002-11-13 ~
Figures 4 and 4a represent the flow of working air in the vacuum cleaner represented in Figure 1;
Figures 5 and Sa represent the flow of cooling air in the vacuum cleaner represented in Figure 1;
Figures 6, 6a and 6b represent the noise insulating material provided in the vacuum cleaner of Figure 1.
Detailled description of particularly preferred embodiments The principle of functionning of this device is that a differential pressure sensor (or more than 1 absolute pressure sensor) is (are) used.
A differential of pressure is taken from one and the other side of the filter as shown in figures 3 and 4) Advantageously, this invention may be used with a central vacuum unit having the following characteristics. A central vacuum unit is a cleaning machine designed to be installed permanently in an area and with one or more ducts connected up to vacuum system intlets in various zone all over the building. This machine allows you to be able to clean any areas of 2 5 this building with the use of a flexible hose or other dirt recuperation device connected to these intlets, provided these inlets are installed.
This central vacuum can be activated by simply inserting the hose in the central vacuum system inlets eelctrically wired to the central vacuum power unit, or by a switch on the hose, or in the dirt recuperation device, or by any other mean.
An enveloppe preferably but not exclusively made of sheet metal is provided.
This enveloppe is made of one or more distinct part. In the present design the enveloppe is made of 3 main part which is the prefered way of manufacturing; the dust collector to capt the vacuumed dirt & residues; the housing of the machine where the fan&motor (wich builds the vacuum required to attract dirt & residues) and control modules are located; and the cover of the housing.
Present state of products available on the market:
Customer of central vacuums are generally very satisfied with the level of power that a central vacuum offers and the practicality of use. Although, in an effort to make a better product for our customer, our recent research in marketing, showed us that a lot of our customer would really prefer if these central vacuums could show lower nuisance regarding the relatively high noise power level that these central vacuum generate.
With reference to Figure 1 a, the vacuum cleaner may comprise:
A Vacuum dirt laden air intake B Dirt & Residue basket 2 5 C Filter & filter cage housing bottom plate D Semi-annular noise dampening chamber center tower E Motor support plate & positionner assembly F Motor exhaust elbow G Motor & fan assembly H Cooling air plate (acoustic dampening material under the plate) I Cooling air "chicane" (acoustic dampening material on the inside) J Acoustic dampening wall mounting support 5 K Central vacuum clean vacuum air exhaust L Semi-annular chamber separator plate M Clips - Dust collector to housing N Dust collector handle Semi-annular central vacuum noise dampening chamber For sound generated from the vacuum air exhaust all manufacturer to our knowledge suggest that a straight silencer should be added to the pipping system, after the fan exhaust air is exhausted from the power unit, in order to lower the sound emitted by the central vacuum.
This is normally done with the use of a elbow to redirect the exhaust from a horizontal to vertical direction to take less horizontal space (wich is normally what is paid for in a building ($/sq.ft)) and then a straight silencer is added. There are 2 problems in doing it this way;
Strait silencer doesn't promote as much reflexion of noise than an annular silencer would (The 2 0 more probability there are for more reflexion on the open cell foam &
solid backing and so forth will allow for more absorbtion of the energy from the sound generated) Placing an elbow outside the envellope of the central vacuum creates an abrupt change in air direction that generates noise and that noise is transmitted throught the elbow's wall. This 2 5 noise is presently not dampened in conventional units, but it is in an innovative central vacuum because the airflow direction is changed in a acoustically dampened space.
Advantages This innovative new design in the central vacuum industry is showing significant improvements over what is available on the market prior to this invention. The advantages of this new concept are:
To applicant's knowledge, units built in this way, show unequaled lower sound level (proven by comparative tests made renowed University center in acoustic reaseach ) (see results of acoustic testing in appendix A) This annular silencer design provide a more efficient way, than conventional strait silencers placed outside the unit, to supress sound generated by a fan exhaust.
This annular design is so efficient in sound dampening that the central vacuum requires no added silencer to be a "quiet" central vacuum. Some results of tests made even presented higher sound power level when an added external silencer was placed on applicant's vacuum exhaust.
Horizontal building space required by the vacuum is designed to be lower than conventional units. Consequently cost of horizontal space used by applicant's machine could be lower.
2 0 This central vacuum requires less time to install since no added silencer and elbow is required on the vacuum air exhaust.
Description of the vacuum cleaner 2 5 This is a central vacuum unit: this unit is a cleaning machine designed to be installed permanently in an area and with one or more ducts connected up to vacuum system intlets in various zone all over the building. This machine allows you to be able to clean any areas of this building with the use of a flexible hose or other dirt recuperation device connected to CA 02332070 2002-11-13 ~
these intlets, provided these inlets are installed.
This central vacuum can be activated by simply inserting the hose in the central vacuum system inlets eelctrically wired to the central vacuum power unit, or by a switch on the hose, or in the dirt recuperation device, or by any other mean.
An enveloppe preferably but not exclusively made of sheet metal is provided.
This enveloppe is made of one or more distinct part. In our present design the enveloppe is made of 3 main part wich is the prefered way of manufacturing; the dust collector to capt the vacuumed dirt & residues; the housing of the machine where the fan&motor (wich builds the vacuum required to attract dirt & residues) and control modules are located; and the cover of the housing.
According to a preferred embodiment of the invention, the vacuum cleaner as the following characteristics:
An assembly motor & fan is provided and inserted in the housing of the vacuum.
This housing is a canister having a sidewall forming a hollow interior. This motor is preferably equipped with a tangential fan discharge. At the exhaust of the motor vacuum air an elbow, preferably 2 0 facing downward, is placed to redirect the airflow to the semi-annular acoustical dampening chamber. (see fig.la). This semi-annular acoustical dampening chamber could be at any location, adjacent or not, to the motor assembly:
Primary Airflow (vacuum air), see Figures 4 and 4a.
The vacuum air intake is located on the top cover and is connected preferably to a 2 inches diameter PVC tube. The airflow is generated by the motor vacuum air fan with draws air from the intake. Following is the primary airflow path and a description of acoustical dampening.
This central vacuum can be activated by simply inserting the hose in the central vacuum system inlets eelctrically wired to the central vacuum power unit, or by a switch on the hose, or in the dirt recuperation device, or by any other mean.
An enveloppe preferably but not exclusively made of sheet metal is provided.
This enveloppe is made of one or more distinct part. In our present design the enveloppe is made of 3 main part wich is the prefered way of manufacturing; the dust collector to capt the vacuumed dirt & residues; the housing of the machine where the fan&motor (wich builds the vacuum required to attract dirt & residues) and control modules are located; and the cover of the housing.
According to a preferred embodiment of the invention, the vacuum cleaner as the following characteristics:
An assembly motor & fan is provided and inserted in the housing of the vacuum.
This housing is a canister having a sidewall forming a hollow interior. This motor is preferably equipped with a tangential fan discharge. At the exhaust of the motor vacuum air an elbow, preferably 2 0 facing downward, is placed to redirect the airflow to the semi-annular acoustical dampening chamber. (see fig.la). This semi-annular acoustical dampening chamber could be at any location, adjacent or not, to the motor assembly:
Primary Airflow (vacuum air), see Figures 4 and 4a.
The vacuum air intake is located on the top cover and is connected preferably to a 2 inches diameter PVC tube. The airflow is generated by the motor vacuum air fan with draws air from the intake. Following is the primary airflow path and a description of acoustical dampening.
Vacuum dirt laden air is drawn from the central vacuum vacuum air intake (in A) to the dust collector (in B). Dirt and residues present in the vacuumed air are filtered by the filter (in B) and this "clean" air is then drawn into the motor vacuum air fan.
This "clean" air is then redirected, by the use of an elbow tubing, to the semi-annular acoustical dampening chamber (in C, as shown on Fig.4.) This chamber has, preferably on all it's surfaces, an acoustical dampening material that allow for significant noise reduction.
(In C) the airflow is forced to go, in clockwise (or anticlockwise) exclusively, around the chamber center tower, because of the presence of a separator (sealed ) in the annular chamber wick makes this a semi-annular chamber. * * *-It is in this area that the noise generated by the vacuum air fan of the motor is dampened. This area could also be equipped with additional separators) in order to improve sound dampening.
Finally the air is evacuated ouside the vacuum (in D) the air could also be redirected outside the room by the use of a ducting connected to the central vacuum air exhaust (tangential or not) .
Important notes:
There is a hole in the annular chamber to allow for airflow to exit from this chamber.
2 5 There is a plate separating the annular chamber in order to prevent noise from exiting by the hole without having being acousticaly dampened.
This chamber has material that dampen acoustical intensity on some or all its surfaces.
This "clean" air is then redirected, by the use of an elbow tubing, to the semi-annular acoustical dampening chamber (in C, as shown on Fig.4.) This chamber has, preferably on all it's surfaces, an acoustical dampening material that allow for significant noise reduction.
(In C) the airflow is forced to go, in clockwise (or anticlockwise) exclusively, around the chamber center tower, because of the presence of a separator (sealed ) in the annular chamber wick makes this a semi-annular chamber. * * *-It is in this area that the noise generated by the vacuum air fan of the motor is dampened. This area could also be equipped with additional separators) in order to improve sound dampening.
Finally the air is evacuated ouside the vacuum (in D) the air could also be redirected outside the room by the use of a ducting connected to the central vacuum air exhaust (tangential or not) .
Important notes:
There is a hole in the annular chamber to allow for airflow to exit from this chamber.
2 5 There is a plate separating the annular chamber in order to prevent noise from exiting by the hole without having being acousticaly dampened.
This chamber has material that dampen acoustical intensity on some or all its surfaces.
An adapter is preferably placed on the annular chamber exit in order to be able, if desired, to "canalise" air by ducts where desired.
Secondary Airflow (cooling air for motor): see Figures 5 and Sa The cooling air intake is located at the bottom of the acoustical dampening support. The airflow is generated by the motor cooling air fan with draws air from the intake of the acoustical support assembly thru a serie of tunels and/or chicane. Following is the secondary airflow path and a description of where significant acoustical dampening occur.
Cooling air enters at the bottom of the acoustical support (in A) and is drawn to the top cooling air chamber and enters this area by an orifice on the side of the vacuum main enveloppe (in B). This first canal has acoustical dampening material that absorbs noise generated within the motor cooling air circuit The cooling air then enters in the motor cooling air intake after passing thru 1 or more chicane (in C) equipped or not with acoustical dampening material on it's surface. The top cover has acoustical dampening material on it's surface, preferably on it's internal surface.
2 0 The air passes thru the motor cooling path to cool the motor.
Then the cooling air is rejected by the motor in the central area of the head.(In D) Cooling air rejected by the motor enters at the bottom of the acoustical support after going thru 2 5 an orifice on the side of the head cylinder main enveloppe.. Finnally, this air is drawn up thru the canal of the support to the exterior (in E). This first canal has acoustical dampening material that absorbs noise generated within the motor cooling air circuit (exhaust side).
Note: The primary function of the acoustical support mentionned is to lower noise power level emmitted by the motor. This part could be used just has a noise dampening baffle (internal, semi-internal or external) and be independent of the support bracket itself.
5 Following is a detail of the Acoustic dampening wall mounting support wich is the prefered way of construction APPENDIX A (Measurement report) Sound power measurement of Duo Vac central vacuum cleaner "silentium" and several other central vacuum power units January 2001 Object The objective of this measurement campaing is to rigorously evaluate and compare the acoustic performance of the power unit of several central vacuum units. The Sound Power Level of hte Duo Vac "Silentium" is measured and compared to several other brands of central vacuum power unit.
Measurement method The measurement method used is based on the measurement of Sound Power level LW usingt the intensity technique following the recommendations of the standard ISO 9614-2 (1996) (Determination of sound power levels of noise sources using sound intensity-Part 2;
Measurement by scanning).
Measurement conditions 2 0 The noise levels have been measured in three different typical installation configurations that are frequently used in practice:
Configuration 1: Measurement of the sound power radiated by the central vacuum power unit using the ASTM F11.50.07: Stantdard Test Method for Determining A-Weighted Sound 2 5 Power Level of Central Vacuum Cleaner Power Unit test configuration.
Intake and exhaust are ducted outside the testing room.
Configuration 2: Measurement of the sound power radiated by the central vacuum power unit including the noise emmitted by the exhauast air. An exhaust muffler is used.
The intake is ducted outside of the testing room.
Configuration 3: Measurement of the sound power radiated by the central vacuum power unit including the noise emitted by the exhaust air without using any exhaust muffler. The intake is ducted outside of the testing room.
Results North American models -~eacurement of j~~~ i ~~nnn Company Model Air WattsConfigurationConfigurationConfiguration MaximumI1 2 3 LW dB A L", dB L", dB
A A
Duo Vac SIL-1404 404 69.2 p.a. 73,1 test 1 Duo Vac SIL-1404 404 69.3 71.8 73.3 test 2 Duo Vac SIL-1530 530 69.5 70.4 70.3 test 1 Duo Vac SIL-1530 530 69.6 69.7 69.8 test 2 Lindsa S-2000 _483 74.6 76.71 90.8 Beam SERENITY 530 76.8 78.2 86.9 C clo DL-150 521 77.8 79.6 89.5 Vac Modern SP3 # 100SP530 78.7 81.3 i 89.8 Da ~ Vacuflo 560 ~ 495 79.3 80 6 90 6 ~
European models - Measurement of 01/04/ nn t Company Model Air WattsConfigurationConfigurationConfiguration Maximumll~1 2 3 L,~ dB L,~ dB L", dB
A A A
Duo Vac SIL-2562 562 70.1 73.4 72.8 test t 2 0 Duo Vac SIL-2562 _562 70.4 73.1 72.1 test 2 Duo Vac SIL-2414 414 70.5 73.3 ~ 74.6 test 1 Duo Vac SIL-2414 414 70.9 73.9 75.0 test 2 Allawa CV-1750N 43? 71.1 72.8 84.9 AertecnicaSilver 2000562 74.2 79.8 91.3 Univac MILLENIUM 455 75.1 74.2 80.4 Aldes AXPIR Com 270 75.6 76.9 77.3 act Flexit MAKSIMAL 390 77.9 78.9 t 79.6 ~ me ~c~unma~ ua~a homer tnan acousuc results) dtsciosed m the following table have been 2 5 obtained on respective manufacturer's brochures, web site or on the most recent motor manufacturer's available data sheet.
l2~ Data is not available because of a non-readable file.
~'~ With VaculineTM 765500 muffler.
~4t With muffler provided by the manufacturer.
Secondary Airflow (cooling air for motor): see Figures 5 and Sa The cooling air intake is located at the bottom of the acoustical dampening support. The airflow is generated by the motor cooling air fan with draws air from the intake of the acoustical support assembly thru a serie of tunels and/or chicane. Following is the secondary airflow path and a description of where significant acoustical dampening occur.
Cooling air enters at the bottom of the acoustical support (in A) and is drawn to the top cooling air chamber and enters this area by an orifice on the side of the vacuum main enveloppe (in B). This first canal has acoustical dampening material that absorbs noise generated within the motor cooling air circuit The cooling air then enters in the motor cooling air intake after passing thru 1 or more chicane (in C) equipped or not with acoustical dampening material on it's surface. The top cover has acoustical dampening material on it's surface, preferably on it's internal surface.
2 0 The air passes thru the motor cooling path to cool the motor.
Then the cooling air is rejected by the motor in the central area of the head.(In D) Cooling air rejected by the motor enters at the bottom of the acoustical support after going thru 2 5 an orifice on the side of the head cylinder main enveloppe.. Finnally, this air is drawn up thru the canal of the support to the exterior (in E). This first canal has acoustical dampening material that absorbs noise generated within the motor cooling air circuit (exhaust side).
Note: The primary function of the acoustical support mentionned is to lower noise power level emmitted by the motor. This part could be used just has a noise dampening baffle (internal, semi-internal or external) and be independent of the support bracket itself.
5 Following is a detail of the Acoustic dampening wall mounting support wich is the prefered way of construction APPENDIX A (Measurement report) Sound power measurement of Duo Vac central vacuum cleaner "silentium" and several other central vacuum power units January 2001 Object The objective of this measurement campaing is to rigorously evaluate and compare the acoustic performance of the power unit of several central vacuum units. The Sound Power Level of hte Duo Vac "Silentium" is measured and compared to several other brands of central vacuum power unit.
Measurement method The measurement method used is based on the measurement of Sound Power level LW usingt the intensity technique following the recommendations of the standard ISO 9614-2 (1996) (Determination of sound power levels of noise sources using sound intensity-Part 2;
Measurement by scanning).
Measurement conditions 2 0 The noise levels have been measured in three different typical installation configurations that are frequently used in practice:
Configuration 1: Measurement of the sound power radiated by the central vacuum power unit using the ASTM F11.50.07: Stantdard Test Method for Determining A-Weighted Sound 2 5 Power Level of Central Vacuum Cleaner Power Unit test configuration.
Intake and exhaust are ducted outside the testing room.
Configuration 2: Measurement of the sound power radiated by the central vacuum power unit including the noise emmitted by the exhauast air. An exhaust muffler is used.
The intake is ducted outside of the testing room.
Configuration 3: Measurement of the sound power radiated by the central vacuum power unit including the noise emitted by the exhaust air without using any exhaust muffler. The intake is ducted outside of the testing room.
Results North American models -~eacurement of j~~~ i ~~nnn Company Model Air WattsConfigurationConfigurationConfiguration MaximumI1 2 3 LW dB A L", dB L", dB
A A
Duo Vac SIL-1404 404 69.2 p.a. 73,1 test 1 Duo Vac SIL-1404 404 69.3 71.8 73.3 test 2 Duo Vac SIL-1530 530 69.5 70.4 70.3 test 1 Duo Vac SIL-1530 530 69.6 69.7 69.8 test 2 Lindsa S-2000 _483 74.6 76.71 90.8 Beam SERENITY 530 76.8 78.2 86.9 C clo DL-150 521 77.8 79.6 89.5 Vac Modern SP3 # 100SP530 78.7 81.3 i 89.8 Da ~ Vacuflo 560 ~ 495 79.3 80 6 90 6 ~
European models - Measurement of 01/04/ nn t Company Model Air WattsConfigurationConfigurationConfiguration Maximumll~1 2 3 L,~ dB L,~ dB L", dB
A A A
Duo Vac SIL-2562 562 70.1 73.4 72.8 test t 2 0 Duo Vac SIL-2562 _562 70.4 73.1 72.1 test 2 Duo Vac SIL-2414 414 70.5 73.3 ~ 74.6 test 1 Duo Vac SIL-2414 414 70.9 73.9 75.0 test 2 Allawa CV-1750N 43? 71.1 72.8 84.9 AertecnicaSilver 2000562 74.2 79.8 91.3 Univac MILLENIUM 455 75.1 74.2 80.4 Aldes AXPIR Com 270 75.6 76.9 77.3 act Flexit MAKSIMAL 390 77.9 78.9 t 79.6 ~ me ~c~unma~ ua~a homer tnan acousuc results) dtsciosed m the following table have been 2 5 obtained on respective manufacturer's brochures, web site or on the most recent motor manufacturer's available data sheet.
l2~ Data is not available because of a non-readable file.
~'~ With VaculineTM 765500 muffler.
~4t With muffler provided by the manufacturer.
Claims
1. A filtration vacuum differential monitoring device for vacuum cleaner provided with a filter, said device comprising an electronic control module able to generate a signal, and a pressure switch connected to said module and provided with two hoses, one hose being connected on the low pressure side of the filter, the other hose being connected on the high pressure side of said filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2332070 CA2332070A1 (en) | 2001-01-24 | 2001-01-24 | Filtration vacuum differential monitoring device for vacuum cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2332070 CA2332070A1 (en) | 2001-01-24 | 2001-01-24 | Filtration vacuum differential monitoring device for vacuum cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2332070A1 true CA2332070A1 (en) | 2002-07-24 |
Family
ID=4168153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2332070 Abandoned CA2332070A1 (en) | 2001-01-24 | 2001-01-24 | Filtration vacuum differential monitoring device for vacuum cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2332070A1 (en) |
-
2001
- 2001-01-24 CA CA 2332070 patent/CA2332070A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |