fig1 and 3 illustrate a typical configuration of an air ventilating and purifying system . as shown , the device 10 contains a cleaning element 12 within the device . this cleaning element varies and will depend on the type of purifying technique that is used in the device . as previously mentioned , these purifying techniques include mechanical filters , absorbents such as charcoal , and electrostatic charges or ionizers . referring to fig2 , vents 14 and 16 provide a channel to allow air to flow into and through the air - cleaning device . dials 18 and 19 can control the amount of the through the cleaning device . fig3 shows the flow of the air through the system . as shown , air can enter into the air cleaner through vent 14 . at this point , the air is drawn into the cleaning element . regardless of the cleaning technique employed , contaminants in the air are removed in the cleaning element . once cleaned , the air flows out of the cleaning device through vent 16 . fig4 shows a general design of the multiple function animal piece that can be used as part of the air ventilation system of the present invention . this configuration is further described in u . s . patent application ser . no . 11 / 344 , 655 and u . s . patent application ser . no . 11 / 121 , 797 to the same inventor . as shown , this piece has a top 20 , open front side 22 , a backside 24 ( not shown in fig4 ), multiple side walls 26 and 28 . the number of side will vary with the particular design shape . this furniture piece can also contain a floor . the front side 22 has an opening 32 , which covers a large portion of the front side . this large opening allows for animals to easily enter the furniture piece . the opening also allows for easy insertion of toys and food and water trays into the furniture piece . in addition , small vent openings 34 and 36 can be included the side walls . these opening improve ventilation in the furniture piece . the front side also has a lip 38 that extends up from the base . fig5 shows a side view of a configuration of an air - cleaning device of the present invention . in this configuration , the air cleaner housing is a stair - step device . in this configuration , one air vent 50 is positioned in the back wall 52 of the housing . a side vent 54 is positioned in the side wall 56 of the housing . a second side vent , not shown , is also positioned in the side wall opposite side wall 56 . these two side vents are symmetrical . air flows through the air vent 50 and into the air - cleaning device . the air then flows through the cleaning element 58 . the air cleaning element can be one such as those manufactured by natural air ( model number natural air 50 ) the cleaned air then flows from the cleaning element and out of the air - cleaner through vents 54 in the side wall . this housing is suited to be positioned adjacent an animal container such as the one described in fig4 . fig6 shows a side view of an alternate stair - step configuration of an air - cleaning device . in this configuration , vent 50 is still in the back wall 52 . however , the second vent 60 is at the front 64 of the stair - step housing . in this embodiment , the air flows from the cleaning element 58 and out of the air cleaning device through vent 60 . fig7 shows the air flow pattern of the configuration illustrated in fig5 . as previously described , flows through vent 50 and the cleaning element 58 . air then flows out the cleaning device through vents 46 in the side walls . this configuration can also have a wall 62 to helps facilitate the flow of air through the side vents . fig8 shows the flow air through the configuration illustrated in fig6 . air is drawn into the cleaning device through vent 50 . the air then travels through the air cleaning element 58 and out of the air cleaning device through vent 60 . fig9 a shows an alternate embodiment of the air ventilating system of the present invention . this embodiment is another stair - step design . shown are two steps 90 and 91 with a front side 92 and a back side 93 . an opening 95 in the upper section of the back side provides an inlet through which air will flow into the device . the cleaning element 94 is attached to the back side 92 and is positioned such that it can draw air through the opening 95 into the housing . openings 96 are on each side of the housing . fig9 b shows a cross - section view of the back side of the housing . shown are the opening 95 and side openings 96 . fig1 a shows a plug element . this plug element 98 can be positioned on the inside of the back wall 92 and positioned such that the wall opening 95 is aligned with opening 95 a in the plug element . an electrical plug 97 provides a means to supply power to the air cleaning element 94 . fig1 b shows a side cross - section view of the plug element attached to the air cleaning element . a gasket material 99 can be positioned between the plug element 98 and the air cleaning element 94 to form a seal between the air cleaning element and the plug element . fig1 a , 11 b and 11 c show different configurations of the air cleaning device . in these configurations 11 b and 11 c , a wall 100 is constructed to enable the flow of air between side openings as previously shown in fig8 . the wall 100 contains the plug element 98 . the air cleaning element can be positioned on either side of the wall depending on which direction is flow is desired . in fig1 b and 11 c , the air will flow into the air cleaning unit through one opening , through the air cleaning element and out through the other side opening . fig1 shows a side view of the air cleaning element on a track in the housing to facilitate linear and circular movement of the air cleaning element in the housing . this configuration provides for movement of the air cleaning element to direct air flow through the housing as desired . fig1 a and 13 b show different configurations of the track 102 . a complete floor 104 can be positioned in the housing to support the track . in the alternative , fig1 b shows a partial floor 106 to support the track 102 . fig1 and 15 show the air cleaning element attached to the housing . the pin 110 that engages the track allows for linear and circular movement of the air cleaning element within the housing . in another application , it may be desirable or necessary for the cleaning device to be positioned such that air flows in through the side of the device instead of the back as previously described . for this application , it may be necessary to change the orientation of the cleaning element such that it faces the side vent . the orientation of the cleaning element could be changed using a dial on the external surface of the housing . this dial would be connected to a control mechanism that is connected to the cleaning element . for example , to rotate the cleaning element in a clockwise direction , the user could turn the dial in a clockwise direction until the desired orientation of the cleaning element is obtained . for maximum efficiency , it is better to have the best alignment of the cleaning element with the vent through which air will be drawn into the cleaning device . the various orientations of the cleaning element can be in a circular direction or they can be combination of circular and linear directions . to facilitate this combination of linear and circular orientations , the cleaning element could have pins on the top and bottom . the top pin could be in mechanical communication with an external control dial . the bottom pin could be positioned in a linear track . the attachment of the pin with the track could be in a manner such the user could move the cleaning element in a linear direction and could also rotate the cleaning element while moving it in a vertical direction . fig1 , 17 and 18 show various configurations of the air cleaning element on the track . fig1 shows a configuration in which the air cleaning is drawing air into the housing in the back side of the housing as illustrated in fig9 a . in fig1 , the air cleaning element can be moved linearly and rotated circularly such that is draws air into through a side opening and out of the housing through the opposite side opening . fig1 is an orientation of the air cleaning element such that it draws air into the housing through the side opening that is opposite the side opening shown in fig1 . in each mentioned embodiment , the air travels through the air cleaning element before existing the housing . fig1 shows an embodiment of the system of the present invention . this system comprises an air cleaning device in combination with an animal containing device . this animal containing device is similar to the one shown in fig4 . the animal container 70 is positioned adjacent the air - cleaning device 72 . the air - cleaning device is positioned such that it covers the vent in one side of the animal container . the positioning of the air - cleaning device should be such that the vent 36 of the animal container is aligned with the vent 50 of the air cleaning device . as shown , this configuration of the air - cleaning device has the vents in the side walls . the air inside the animal container space is contaminated with the smell of the animal . as mentioned , this smell filters into the entire room . with the present invention , the air 80 from the containing is drawn out of the container 70 through the side vent 36 and back vent 50 and into the air cleaning device 72 . when in the air cleaner , the cleaning element cleans the air . the air 80 then flows out of the cleaning device through the side vents . the system of the present invention can also comprise a configuration in which the structures as shown in fig1 are combined as one structure having multiple sections . the structures described in this invention can be constructed from any conventional building material such as metal , wood or plastic . as mentioned , the configurations for configuring the air cleaning device and system will vary . described herein are only examples of various configurations and various air cleaning and purifying techniques . these air cleaning techniques are conventional techniques that are implemented in this invention . the invention described herein is not limited in scope to the example configurations described in this disclosure . the present invention provides significant advantages over the current art . the invention has been described in connection with its preferred embodiments . however , it is not limited thereto . changes , variations and modifications to the basic design may be made without departing from the inventive concepts in this invention . in addition , these changes , variations and modifications would be obvious to those skilled in the art having the benefit of the foregoing teachings . all such changes , variations and modifications are intended to be within the scope of this invention .