CA2076228A1 - Return air filter - Google Patents
Return air filterInfo
- Publication number
- CA2076228A1 CA2076228A1 CA002076228A CA2076228A CA2076228A1 CA 2076228 A1 CA2076228 A1 CA 2076228A1 CA 002076228 A CA002076228 A CA 002076228A CA 2076228 A CA2076228 A CA 2076228A CA 2076228 A1 CA2076228 A1 CA 2076228A1
- Authority
- CA
- Canada
- Prior art keywords
- air
- attachment
- hook
- grill
- hook portion
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
ABSTRACT
A device for filtering air as it returns to the heating or cooling machine in a residential environment. The device is attached to the grill covering the intake opening of the air system. The device is held in place with an adhesive or hook and loop fastener.
A device for filtering air as it returns to the heating or cooling machine in a residential environment. The device is attached to the grill covering the intake opening of the air system. The device is held in place with an adhesive or hook and loop fastener.
Description
~ i~ 7 ~
The present i.nvention consists mainly of a device Eor filtering the air in a residential environment.
Many types of device are avai.lable to perform th.is task in a multitude of ways. Most devices remove impurities by moving air past a filter medium made from fiberglass, metal, plastics, carbon or combinations of these materials.
one such group of devices wou].d be classed as portable or self contained. This group incorpora es a mechanical means to move the air and a filter element. The size of the filter element and volume of air moved are relevant factors in efficiency and costs of such devices. The majority of portable devices commercially available for use in a residen-tial environment use very small fil~ers and process small quantities of air rendering them less -than adequate for most residences.
:) , ~
,!
i ' .
'i .~ .
`, ~7~2~8 ~s well many portable filt~rs must be located in the room where filtration is required. The motor and fan often used to move the air over the filter produce unwanted noise.
With a combination of fan, filter element and power source such devices would not be consid~red passive. Such mechanical devices often require maintenance and replacem~nt as well as being expensive.
Another group of filter prod~cts use the existing forced air heating and cooling system as the prime mover of air within a residentii~l environment.
one example of these filters perform when inserted in the air path as it moves through the duct work. All of the volume of air moving through the system is channeled through this type of filter.
As with most filter products they require replacement and or cleaning. When a filter product is located within the duct work of a home it is often in a difficult to reach or cramped area. Some filters of this nature require the removal of parts of the heating/cooling unit for access. In North America tens of mi:Llions of disposable filters, of this type, per year are discarded, contributing to our waste problem.
Another example of this fil-~.er type, Canadian Patent No.1271940 Parke, issued July 24, 1990 perform by being inserted in the air path as .it moves through the Eloor level register at the point the air enters the room.
This invention is a commercially successful, easy to access, easy to clsan and replace filte~ However, similar to other filters that resiide within the ductwork, this invention does not filter air prior to the air ent.ering the ductwork.
Many filter products using the exi.sting forced air heating / cooling system to filter air and located within the ductwork, do not filter dirty air before it ~n-ters the ductwork. In the last few years therP has been a trend for Companies to offer ductcleaning services, creating a demand for filtration to keep ducts clean, Another drawback of products using the existing forced air heating / cooling system is the difficulty of access for replacement and servicincJ.
: " '" ;' ' ' .. ' . ` ' ` . ': . . . ' ". " : `' ' ' '. ~ . ' ' ' - ~ ' .: ' ' : ' 2~$2~
It is desirable to have a residential envir~nment wi-th clean air. It. is al~so desirable to have a filter for filtering air before it enkers the ductwork. It is desirable to have residential air filters in a location easy to access, of the passive varie~y, inexpensive and have such filters removable for replacement and serviclng.
The present invention provides for the beorementioned needs. With the growing profile of "clean air equals good health" many consumers have a need for new and innovative filtration. The commercial success oE the beforementioned register filtersl Canadian Patent 1271940/ is a good example of fulfillment of this type of need. ~he present invention offers an inexpensive means to use existing heating / cooling equipment to provide a needed type of air filtration. An added benefit is the inventions ability to reduce the dust and dirt entering and contaminatiny -the ductwork.
, ;,~
~l According to one aspect the invention consists of a device :;., for filtering air comprising a thin rectangular g~nerally flat air filter medium ~attached or removably attached to a .~
residential return air rJrill used in heating and cooling systems.
~ .
, .~
;~
~I
2 ~ ~
According to ano-ther aspect the invention consists of a device for fllte:King air, comprising: a generally thin~
flat, rectangul.ar body of filter medium and means of attachment. rrhe body fits o~ and parallel to the suction side of a residential air return grill used in heating and cooling systems. The means of attachment is aligned between the body and suction side of the grill in iuch a position to firmly attach said body to said grill.
The invention may also have a body of washable fil-ter medium.
The invention may also have a body of Eil.ter m~dium in a f our s ided shape.
The invention may also have a means of attachment consisting of strip(si) of hook and loop fastner.
,, The invention may also have a means of attachment, being an adhesive backed hook portion o:E hook and loop Eastener.
The invention may also have a means of attachment~ said means oE attachment being an adhesive.
~7~
According to another aspect the i~vention consis-ts of a device for filterin~ air comprising a body of thin rectangular generally flat filter material. Preferably this material is a two to six ounce per square yard stranded polyeciiter filter medium. The nature of this material makes it receptive to the hook portion of hook and loop fastener.
A means of attachment may consist of strip(s) of the hook portion of hook and loop fastener with an adhesive back.
The body may fit on and approximately parallel to a, broad, suction side of the residential air return grill used in heating and cooling system 4i. This type of grill, generally, i5 located, with a broad suction side parallel to a wall near floor level. The grill is generally a rectangular shape haviny sidei, a top and bottom of narrow proportions and broad sides louvered to allow the passage of air.
.
The means of attachment is aligned between the body and suction side of the grill. The position of the means of attachment may ocGur near the perimeter of the suction side 1l~ of the grill to firmly but removably attach the body to the 3~ grill.
~1~
1:, 2 2 ~
The invention as exemplified by a preferr~d embodiment, is describ~d with reference to thP drawings in which:
Figure 1 is a perspective view of an em~odiment of the invention, a filter and mean~ of attachment.
:` and Figure 2 illuskrates a ~omponent related to the invention, th~ suction side of a grill, in which the inventlon is utilized.
;l and ;~ Figure 3 is a perspective view s,howing the location of a ~ grill, in which the invention is used, in relai-tion to the :, floor and wall of a room.
i and Figure 4 is a cutaway s.ide view showîng the position of a ~11 grill in relation to the; floorl wall of a room, opening to 1~ ductwork and the invention, comprising; a ~ilter eleme:llt .1~; and means of attachment in the preferred position.
,.
' ' ! ~ - .:
,,j~,~", ;,,,~,,, "",, :~,;: ,,",", ,~ ' ,, '" ',~
~7~2~
Referring to the drawings~ the preferred embodiment of the invention shown in Figure 1, a filt~r comprising a filter eleme~t 6 and hook portion of hook and loop -fastener 8. The preferred embodiment of the invention in working position is located on the suction side 12 of the grlll 15 shown in Figure 2.
As may be seen in Figure 3 the grill 15 is located at the junction of wall 16 and floor 18. The grill 15 covers the entrance 22 of the ductwork 20 shown in Figure 4.
The hook portion of hook and loop fastener 8 comprises several pieces as illustrated in Figure 1 positioned to correspond to the dim~nsions of the outer perimeter and center portior. of the suction side 12 of the grill 15 shown i.n Figure 2.
Shown in Figure 1 the hook portion of hook and loop fastener 8 has an adhesive back 14 which is used to secure the hook portion of hook and loop fastener 8 to the grill 15 illustrated in Figure 2.
The ~ilter element 6 illustrated in Figure 1 is receptive to the hook portion of the hook and loop fastener 8. The filter element 6 is preferably made from strands o~
polyester or similar fibers to form filter element 6.
~7~
~ strated in Figure 4 the grill ~.5 is in position against wall 16 resting on floor 18 covering entrance to ductwork 22. The filter element 6 is naturally attracted -to and attached to the hook portion of hook and loop fastener 8 which is positioned on and held to the suction side 12 of grill 15 by the adhesive back 14. The invention cleans air as it passes through the filter element 6 on its way to opening to ductwork 22 ~nd ductwork 20.
~., A prefered embodiment of the invention was constructed and put into use as follows: in reference to Figure 4 the filter element 6 made of stranded polyester and a binding , agent was cut to size to fit on the suction side 12 of i~ grill 15. Pieces of the hook portion of hook and loop fastener 8 having an adhesive back 14 were pressed onto the outer periphery and center port.ion of the suction s.ide 12 of grill 15. The filter element 6 was pressed onto the hook portion of the hook and loop fastener 8.
, i :1 I ~:
The present i.nvention consists mainly of a device Eor filtering the air in a residential environment.
Many types of device are avai.lable to perform th.is task in a multitude of ways. Most devices remove impurities by moving air past a filter medium made from fiberglass, metal, plastics, carbon or combinations of these materials.
one such group of devices wou].d be classed as portable or self contained. This group incorpora es a mechanical means to move the air and a filter element. The size of the filter element and volume of air moved are relevant factors in efficiency and costs of such devices. The majority of portable devices commercially available for use in a residen-tial environment use very small fil~ers and process small quantities of air rendering them less -than adequate for most residences.
:) , ~
,!
i ' .
'i .~ .
`, ~7~2~8 ~s well many portable filt~rs must be located in the room where filtration is required. The motor and fan often used to move the air over the filter produce unwanted noise.
With a combination of fan, filter element and power source such devices would not be consid~red passive. Such mechanical devices often require maintenance and replacem~nt as well as being expensive.
Another group of filter prod~cts use the existing forced air heating and cooling system as the prime mover of air within a residentii~l environment.
one example of these filters perform when inserted in the air path as it moves through the duct work. All of the volume of air moving through the system is channeled through this type of filter.
As with most filter products they require replacement and or cleaning. When a filter product is located within the duct work of a home it is often in a difficult to reach or cramped area. Some filters of this nature require the removal of parts of the heating/cooling unit for access. In North America tens of mi:Llions of disposable filters, of this type, per year are discarded, contributing to our waste problem.
Another example of this fil-~.er type, Canadian Patent No.1271940 Parke, issued July 24, 1990 perform by being inserted in the air path as .it moves through the Eloor level register at the point the air enters the room.
This invention is a commercially successful, easy to access, easy to clsan and replace filte~ However, similar to other filters that resiide within the ductwork, this invention does not filter air prior to the air ent.ering the ductwork.
Many filter products using the exi.sting forced air heating / cooling system to filter air and located within the ductwork, do not filter dirty air before it ~n-ters the ductwork. In the last few years therP has been a trend for Companies to offer ductcleaning services, creating a demand for filtration to keep ducts clean, Another drawback of products using the existing forced air heating / cooling system is the difficulty of access for replacement and servicincJ.
: " '" ;' ' ' .. ' . ` ' ` . ': . . . ' ". " : `' ' ' '. ~ . ' ' ' - ~ ' .: ' ' : ' 2~$2~
It is desirable to have a residential envir~nment wi-th clean air. It. is al~so desirable to have a filter for filtering air before it enkers the ductwork. It is desirable to have residential air filters in a location easy to access, of the passive varie~y, inexpensive and have such filters removable for replacement and serviclng.
The present invention provides for the beorementioned needs. With the growing profile of "clean air equals good health" many consumers have a need for new and innovative filtration. The commercial success oE the beforementioned register filtersl Canadian Patent 1271940/ is a good example of fulfillment of this type of need. ~he present invention offers an inexpensive means to use existing heating / cooling equipment to provide a needed type of air filtration. An added benefit is the inventions ability to reduce the dust and dirt entering and contaminatiny -the ductwork.
, ;,~
~l According to one aspect the invention consists of a device :;., for filtering air comprising a thin rectangular g~nerally flat air filter medium ~attached or removably attached to a .~
residential return air rJrill used in heating and cooling systems.
~ .
, .~
;~
~I
2 ~ ~
According to ano-ther aspect the invention consists of a device for fllte:King air, comprising: a generally thin~
flat, rectangul.ar body of filter medium and means of attachment. rrhe body fits o~ and parallel to the suction side of a residential air return grill used in heating and cooling systems. The means of attachment is aligned between the body and suction side of the grill in iuch a position to firmly attach said body to said grill.
The invention may also have a body of washable fil-ter medium.
The invention may also have a body of Eil.ter m~dium in a f our s ided shape.
The invention may also have a means of attachment consisting of strip(si) of hook and loop fastner.
,, The invention may also have a means of attachment, being an adhesive backed hook portion o:E hook and loop Eastener.
The invention may also have a means of attachment~ said means oE attachment being an adhesive.
~7~
According to another aspect the i~vention consis-ts of a device for filterin~ air comprising a body of thin rectangular generally flat filter material. Preferably this material is a two to six ounce per square yard stranded polyeciiter filter medium. The nature of this material makes it receptive to the hook portion of hook and loop fastener.
A means of attachment may consist of strip(s) of the hook portion of hook and loop fastener with an adhesive back.
The body may fit on and approximately parallel to a, broad, suction side of the residential air return grill used in heating and cooling system 4i. This type of grill, generally, i5 located, with a broad suction side parallel to a wall near floor level. The grill is generally a rectangular shape haviny sidei, a top and bottom of narrow proportions and broad sides louvered to allow the passage of air.
.
The means of attachment is aligned between the body and suction side of the grill. The position of the means of attachment may ocGur near the perimeter of the suction side 1l~ of the grill to firmly but removably attach the body to the 3~ grill.
~1~
1:, 2 2 ~
The invention as exemplified by a preferr~d embodiment, is describ~d with reference to thP drawings in which:
Figure 1 is a perspective view of an em~odiment of the invention, a filter and mean~ of attachment.
:` and Figure 2 illuskrates a ~omponent related to the invention, th~ suction side of a grill, in which the inventlon is utilized.
;l and ;~ Figure 3 is a perspective view s,howing the location of a ~ grill, in which the invention is used, in relai-tion to the :, floor and wall of a room.
i and Figure 4 is a cutaway s.ide view showîng the position of a ~11 grill in relation to the; floorl wall of a room, opening to 1~ ductwork and the invention, comprising; a ~ilter eleme:llt .1~; and means of attachment in the preferred position.
,.
' ' ! ~ - .:
,,j~,~", ;,,,~,,, "",, :~,;: ,,",", ,~ ' ,, '" ',~
~7~2~
Referring to the drawings~ the preferred embodiment of the invention shown in Figure 1, a filt~r comprising a filter eleme~t 6 and hook portion of hook and loop -fastener 8. The preferred embodiment of the invention in working position is located on the suction side 12 of the grlll 15 shown in Figure 2.
As may be seen in Figure 3 the grill 15 is located at the junction of wall 16 and floor 18. The grill 15 covers the entrance 22 of the ductwork 20 shown in Figure 4.
The hook portion of hook and loop fastener 8 comprises several pieces as illustrated in Figure 1 positioned to correspond to the dim~nsions of the outer perimeter and center portior. of the suction side 12 of the grill 15 shown i.n Figure 2.
Shown in Figure 1 the hook portion of hook and loop fastener 8 has an adhesive back 14 which is used to secure the hook portion of hook and loop fastener 8 to the grill 15 illustrated in Figure 2.
The ~ilter element 6 illustrated in Figure 1 is receptive to the hook portion of the hook and loop fastener 8. The filter element 6 is preferably made from strands o~
polyester or similar fibers to form filter element 6.
~7~
~ strated in Figure 4 the grill ~.5 is in position against wall 16 resting on floor 18 covering entrance to ductwork 22. The filter element 6 is naturally attracted -to and attached to the hook portion of hook and loop fastener 8 which is positioned on and held to the suction side 12 of grill 15 by the adhesive back 14. The invention cleans air as it passes through the filter element 6 on its way to opening to ductwork 22 ~nd ductwork 20.
~., A prefered embodiment of the invention was constructed and put into use as follows: in reference to Figure 4 the filter element 6 made of stranded polyester and a binding , agent was cut to size to fit on the suction side 12 of i~ grill 15. Pieces of the hook portion of hook and loop fastener 8 having an adhesive back 14 were pressed onto the outer periphery and center port.ion of the suction s.ide 12 of grill 15. The filter element 6 was pressed onto the hook portion of the hook and loop fastener 8.
, i :1 I ~:
Claims (8)
1) A device for filtering air comprising: a thin rectangular generally flat air filter medium attached or removably attached to a residential return air grill used in heating and cooling systems.
2) A device for filtering air comprising: a generally thin, flat, rectangular body of filter medium and means of attachment; said body fits on and approximately parallel to a broad side of a residential air return grill used in heating and cooling systems, said means of attachment is aligned between said body and said broad side of said grill in a position to firmly attach said body to said grill.
3) The device for filtering air as in claim 2 wherein said body is washable.
4) The device for filtering air as in claim 2 wherein said means of attachment comprises strip(s) of hook portion of hook and loop type fastener.
5) The device for filtering air as in claim 2 wherein said means of attachment comprises strip(s) adhesive back hook portion of hook and loop type fastner.
6) The device for filtering air as in claim 2 wherein said means of attachment comprises an adhesive.
7) A device for filtering air comprising: a body of thin rectangle generally flat filter element receptive to the hook portion of hook and loop fastener and a means of attachment consisting strip(s) of the hook portion of hook and loop fastener, said means of attachment being adhesive backed whereby said adhesive back hook portion of hook and loop fastener is attachable to a grill used as the air inlet in a residential heating or cooling system and said filter element is removably attachable to said means of attachment thereby creating a means to filter air at said grill.
8) A device for filtering air comprising:
A thin rectangle porous body consisting of manmade or natural fibers, said body being receptive to the hook portion of hook and loop fastener and means of attachment consisting of strip(s) of adhesive back hook portion of hook and loop fastener whereby said means of attachment is attachable to the suction side of grills used at the air inlet of residential forced air heating or cooling systems and said body being naturally attracted to and removably attachable to said means of attachment thereby creating a removably attachable device suitable for filtering air in a residential environment.
A thin rectangle porous body consisting of manmade or natural fibers, said body being receptive to the hook portion of hook and loop fastener and means of attachment consisting of strip(s) of adhesive back hook portion of hook and loop fastener whereby said means of attachment is attachable to the suction side of grills used at the air inlet of residential forced air heating or cooling systems and said body being naturally attracted to and removably attachable to said means of attachment thereby creating a removably attachable device suitable for filtering air in a residential environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002076228A CA2076228A1 (en) | 1992-08-17 | 1992-08-17 | Return air filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002076228A CA2076228A1 (en) | 1992-08-17 | 1992-08-17 | Return air filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2076228A1 true CA2076228A1 (en) | 1994-02-18 |
Family
ID=4150305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002076228A Abandoned CA2076228A1 (en) | 1992-08-17 | 1992-08-17 | Return air filter |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2076228A1 (en) |
-
1992
- 1992-08-17 CA CA002076228A patent/CA2076228A1/en not_active Abandoned
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5853445A (en) | Interlocking dual filter | |
| US7837773B2 (en) | Air treatment system | |
| US5989320A (en) | Frameless electrostatic air filter with internal support grill | |
| US7524362B2 (en) | Modular filter assembly | |
| US4689058A (en) | Disposable stove hood filter | |
| US5421862A (en) | Filter frame and replaceable filter sheets | |
| US5704953A (en) | Forced air system air filter | |
| US10758857B2 (en) | Filtration assembly and system | |
| AU674977B2 (en) | Air purifying apparatus | |
| US6923911B1 (en) | Method of filtering air through an air passageway | |
| DE69524076D1 (en) | AIR FILTER ARRANGEMENT FOR FILTERING AIR WITH PARTICLES | |
| US6398835B1 (en) | Air filtering device having a toroidaly shaped shroud attached to a fan guard for holding a toroidally shaped filter element | |
| CA2138017A1 (en) | Filter Device for the Filtration of Gases and/or Fluids | |
| US20110132198A1 (en) | Filter assembly | |
| US4880448A (en) | Double filter insert for an air cleaning apparatus | |
| US4470834A (en) | Air filter | |
| US7052524B1 (en) | Fan mounted air purifier | |
| AU734356B2 (en) | Filter mounting frame | |
| CA2076228A1 (en) | Return air filter | |
| US6579336B1 (en) | Reversed cube air filter assembly | |
| JP2006057900A (en) | Air cleaning filter and air treatment device provided therewith | |
| GB2299769A (en) | Air cleaner with slidably removable filter elements | |
| JPH0510893Y2 (en) | ||
| JP3026258U (en) | Ventilation fan stain prevention cover | |
| JPH0222017Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |