CA1216573A - Rotary mixing damper method and means - Google Patents
Rotary mixing damper method and meansInfo
- Publication number
- CA1216573A CA1216573A CA000433774A CA433774A CA1216573A CA 1216573 A CA1216573 A CA 1216573A CA 000433774 A CA000433774 A CA 000433774A CA 433774 A CA433774 A CA 433774A CA 1216573 A CA1216573 A CA 1216573A
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- Prior art keywords
- air
- building
- housing
- axis
- opening
- 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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Abstract
ABSTRACT
An improved air stabilization system and method used in a building ventilation system. The improvement comprises position-ing rotatably a single mixing damper blade within a damper blade housing such as to regulate the air flow through air openings within the housing.
An improved air stabilization system and method used in a building ventilation system. The improvement comprises position-ing rotatably a single mixing damper blade within a damper blade housing such as to regulate the air flow through air openings within the housing.
Description
ROTARY MIXING DAMPER METHOD AND MEANS
This in~ention provides an impro~ed air stabilization system and method. More specifically, this invention contemplates an improved air stabilization system and method for a bu-ldin~
ventilation system.
U. S. Patent No. 4,07~,665 by Martin illustrates a ventilation system. U. S. Patent No. 3,727,537 by Harty9 Jr. discloses an air distribution unit including a paddle that serves as an apportioner for air in the system. U. S. Patent No. 3,722,395 by Courchesne discloses a damper in a window type air conditioning unit that serves to proportion air. None of the foregoing prior art teaches or suggests the particular improved air stabilization system and method of this invention9 which offers to the industry a substi-tute or replacement for the common and more complex prior art face and bypass damper arrangement.
This invention accomplishes its desired objects by providing an improved air stabilization system for a building ventilation system which has an air propulsion means for delivering and/or intaking air through a plurality of openings in a housing having ; a damper assembly. The improvement includes rotatably position-ing within the housing a single mixing damper blade means such as to regulate the air flow through the openings of the housing to allow either intake of ambient air to exhaust air from the building or to blend air from the building with outside air or to circulate only building air by completely closing off any intake of ambient air and exhaust of building air.
It is an object of the invention to provide a novel improved air stabilization system and method.
Still further objects of the invention reside in the provision of an air stabilization system having one moving part with little pressure drop, and is relatively inexpensive to manufacture.
These, together with the various ancillary objects and features which will become apparent as the following descripti.on proceeds, are a~tained by this invention, preferred embodiments being shown in the accompanying drawings, by way of example only, wherein:
FIG. 1 is a side elevational view of the invention;
FIG. 2 is a top plan view of the invention;
FIG. 3 is a vertical sectional view taken in direction of the arrows and along the plane of line 3-3 in FIG. 2;
FIG. 4 is a partial horizontal sectional ~iew taken in direction o~ the arrows and along the plane of line 4-4 in FIG. 1 in order to illustrate a top plan view of the nozzle sprayers;
FIG. 5 is a vertical sectional view taken in direction of the arrows and along the plane of line 5-5 in FIG. 3;
FIG. 6 is the single mixing wedge damper blade assembly in the full ai.r return setting to only circulate air that is already within the building;
FIG. 7 is the single mixing wedge damper blade assembly in the intermediate setting in order to exhaust some building air and return the remaining building air to admix with some cooler atmospheric air;
FIG. 8 is the single mixing wedge damper blade assembly in the full air exhaust setting to completely exhaust warm plant air and replace the same with cooler air drawn in from the out-side;
FIG. 9 is a single damper blade with an arcuate section integrally bound thereto and in the full air return setting9 FIG. 10 is a schematic view of the single damper blade assembly air stabilization system diagram; and FIG. 11 is a schematic view of the modugate control circuit.
Referring in detail now to the drawings, wherein like refer-ence numerals designate similar parts throughout the various views, and in particular to FIG. 10, there is seen the împroved air stabilization system used in a building ventilation system.
The building ven~ilation system (see FIG. 10) comprises the im-proved air stabilization system, generally illustrated as 10, and a modulating thermostat 12 to control air stabilization sys-: tem 10; and a humidistat 14 to control ~he amotmt of moistureplaced in the air prior to bf~ing cirf~ulated back into the build-ing, generally illust~ted as 16, having a basement 18, rolls at 20, purifiers at 22, sifters at 24 and pneumatics at 26. On the same level at 26 are collectors 28, filter 30 9 and mill 32.
A ~an 34 sucks air from the building 16, especially from mill 32, filter 30 and collectors 2~ and discharges the same into the improved air stabilization system 10.
The control circuit (see FIG. 11) includes a high pressure gauge 34, a regulator 36 (set to 20 psi max), a low pressure gauge 38, and a filter 40. A dryer 42 (1/4 NPT IN/OUT) is pre-:Eerably included, especially for winter conditions. Bypass line 44 is optional'. Pneumatic thermostat 12 t5t32 IN/OUT) interen-gages to a pilot actuator control box 46 mounted on one of the modugate actuators 4~-48 and includes ports marked S ~Supply), f~ (Output), and P (Port). Thermostat O port is tubed to P port on the actuator control box 46. Supply air (20 psi max) is tubed to S port on the actuator control box 46. O port on the box 46 is tubed to the actuators 48-48. If the control box 46 is in the outside atmosphere, it must be covered and insulated, depending on the climate.
The improved air stabiliæation system 10 has a cabinet 50 (see FIGS. 1 and 2) with plate~ 52 and plates 54-54. Air intake channel opening 56 and air exhaust channel opening 58 are pro-vided for the intake of atmospheric air and the exhaust of build-ing air, respectively~ from and to a modugate chamber 59.
A simple modugate damper 60 is pivotally connected within the chamber 59 in proximity to channel openings 56 and 58 to regulate the air flow through the channel openings 56 and 58 to allow either intake of ambient air to exhaust air from the building 16 or to blend air from the building 16 with outside air to circulate only building air by completely closing off any intake of ambient air and exhaust of building air. Modugate damper 60 is pneumati-cally activated by pneumatic assembly 61 which is operated by thermostat 12. Chamber 59 also includes a building air inle~
opening 62 and a building air outlet opening 64. The limits of rotation of the single damper blade 60 within the chamber 59 are set by protrusion members 66 and 68. Member 66 is attached to the top of the outlet opening 64 and member 68 is secured in proximlty to the bottom of the inlet opening 62.
In a preferred embodiment of the invention (see FIGS. 3,6,7,8) modugate damper 60 comprises a modiied wedge having one end 70 deining an arcuate shape and opposed end 72 tapering to an edge.
In another preferred embodiment of the invention (see FIG. 9) the modugate damper 60 includes a damper blade 74 and an approximately 60 arc section 76 integrally bound to the blade 74 such that the blade 74 rotates about 60 within the chamber 59.
Air stabilization system 10 additionally comprises a spray chamber means, generally illustrated as 78, and a fan means, generally illustrated as 80, in communication with the spray chamber means 78 for circulating air from the chamber means 78 into the building 16.
Spray chamber means 78 is controlled by humidistat 14 and includes a pair of spray banks 82-82; a sump 84 positioned in the bottom of chamber means 78 for catching and holding water that is sprayed from banks 82-82; and an eliminator 86 having a cross section defining a chevron (see FIG. 4). A water pump (not shown in the drawings3 actuates spray banks 82-~2 per humidi-stat 14.
Fan means 80 includes an air foil type fan 88 operated by a motor 90.
With continuing reference to the drawings for operation of the invention, building air is delivered from mill 32, filter 30 and collector 28 through air inlet opening 62 by filter fan 34 ~mder suficient positive pressure to either vent all or a por-tion of the building air through the unrestricted exhaust opening 58, or all or a portion of the building air through outlet opening 64 and into the spray chamber means 7~, depending on the position o the single damper bl~de 60. FIGS. 3 and 8 illustrate the single damper blade 60 in a full air exhaust setting wherein warm plant air is completely exhausted through exhaust opening 58 by fan 34 while simultaneously cooler air is drawn in from the outside through opening 56 by fan means 80. FIGS. 6 and 9 illustrate the single damper blade 60 in a full air return setting wherein no building air is exhausted through exhaust opening 58 and no cooler air is drawn in from the outside through opening 56; only building air is circulated from fan 34 through the spray chamber mear,s 78 and back into the building 16 by fan means 80. In the preferred (and most frequent) intermediate setting (see FIG~ 7 some building air is exhausted through exhaust opening 58 and the remainder is passed around tapered end 72 to be admixed with the outside air prior to being passed into the spray chambPr means 78 to be humidified. The position of the damper blade 60 depends on the amount of heat needed in the air. If more heat is needed, the tapered end 72 (or blade 74) will move (thermo-statically controlled by thermostat 12) to recycle more warm building air, while the arcuate shap~d end 70 (or arc section 76) moves to reduce the intake of outdoor air, resulting in a warmer mixture. If less heat is needed to satisfy the termostat 12, the tapered end 7~ will move in the opposite direction which will open the arcuate shaped end 70 ~e.g. to 60% open~ to increase the intake of outdoor air and close the tapered end 72 (e.g. to 4~%
closed) to recycle less warm building air. Thus, the resulting mixture of air will be 40% recycle and 60% eghaust. Thus, the air volume from outdoors is matched by the volume exhausted outdoors.
This maintains constant pressure in the building 16, while the temperature and the total air through put (through chamber means 78) also remains constant. Utilization of the single blade damper means 60 with spray chamber 78 is not mandatory; it may be used independently of the spray chamber 78 where humidity control is not essentialO
While the present invention has been described herein with reference to particular embodiments thereo, a latitud~ of modi-fications, various changes, and substitutions are intended in the foregoing disclosure, and it will b~ appreciated that in so~!e instances some features of the invention will be employed without a corresponding use of other features without departing rom the scope of the invention as set forth.
This in~ention provides an impro~ed air stabilization system and method. More specifically, this invention contemplates an improved air stabilization system and method for a bu-ldin~
ventilation system.
U. S. Patent No. 4,07~,665 by Martin illustrates a ventilation system. U. S. Patent No. 3,727,537 by Harty9 Jr. discloses an air distribution unit including a paddle that serves as an apportioner for air in the system. U. S. Patent No. 3,722,395 by Courchesne discloses a damper in a window type air conditioning unit that serves to proportion air. None of the foregoing prior art teaches or suggests the particular improved air stabilization system and method of this invention9 which offers to the industry a substi-tute or replacement for the common and more complex prior art face and bypass damper arrangement.
This invention accomplishes its desired objects by providing an improved air stabilization system for a building ventilation system which has an air propulsion means for delivering and/or intaking air through a plurality of openings in a housing having ; a damper assembly. The improvement includes rotatably position-ing within the housing a single mixing damper blade means such as to regulate the air flow through the openings of the housing to allow either intake of ambient air to exhaust air from the building or to blend air from the building with outside air or to circulate only building air by completely closing off any intake of ambient air and exhaust of building air.
It is an object of the invention to provide a novel improved air stabilization system and method.
Still further objects of the invention reside in the provision of an air stabilization system having one moving part with little pressure drop, and is relatively inexpensive to manufacture.
These, together with the various ancillary objects and features which will become apparent as the following descripti.on proceeds, are a~tained by this invention, preferred embodiments being shown in the accompanying drawings, by way of example only, wherein:
FIG. 1 is a side elevational view of the invention;
FIG. 2 is a top plan view of the invention;
FIG. 3 is a vertical sectional view taken in direction of the arrows and along the plane of line 3-3 in FIG. 2;
FIG. 4 is a partial horizontal sectional ~iew taken in direction o~ the arrows and along the plane of line 4-4 in FIG. 1 in order to illustrate a top plan view of the nozzle sprayers;
FIG. 5 is a vertical sectional view taken in direction of the arrows and along the plane of line 5-5 in FIG. 3;
FIG. 6 is the single mixing wedge damper blade assembly in the full ai.r return setting to only circulate air that is already within the building;
FIG. 7 is the single mixing wedge damper blade assembly in the intermediate setting in order to exhaust some building air and return the remaining building air to admix with some cooler atmospheric air;
FIG. 8 is the single mixing wedge damper blade assembly in the full air exhaust setting to completely exhaust warm plant air and replace the same with cooler air drawn in from the out-side;
FIG. 9 is a single damper blade with an arcuate section integrally bound thereto and in the full air return setting9 FIG. 10 is a schematic view of the single damper blade assembly air stabilization system diagram; and FIG. 11 is a schematic view of the modugate control circuit.
Referring in detail now to the drawings, wherein like refer-ence numerals designate similar parts throughout the various views, and in particular to FIG. 10, there is seen the împroved air stabilization system used in a building ventilation system.
The building ven~ilation system (see FIG. 10) comprises the im-proved air stabilization system, generally illustrated as 10, and a modulating thermostat 12 to control air stabilization sys-: tem 10; and a humidistat 14 to control ~he amotmt of moistureplaced in the air prior to bf~ing cirf~ulated back into the build-ing, generally illust~ted as 16, having a basement 18, rolls at 20, purifiers at 22, sifters at 24 and pneumatics at 26. On the same level at 26 are collectors 28, filter 30 9 and mill 32.
A ~an 34 sucks air from the building 16, especially from mill 32, filter 30 and collectors 2~ and discharges the same into the improved air stabilization system 10.
The control circuit (see FIG. 11) includes a high pressure gauge 34, a regulator 36 (set to 20 psi max), a low pressure gauge 38, and a filter 40. A dryer 42 (1/4 NPT IN/OUT) is pre-:Eerably included, especially for winter conditions. Bypass line 44 is optional'. Pneumatic thermostat 12 t5t32 IN/OUT) interen-gages to a pilot actuator control box 46 mounted on one of the modugate actuators 4~-48 and includes ports marked S ~Supply), f~ (Output), and P (Port). Thermostat O port is tubed to P port on the actuator control box 46. Supply air (20 psi max) is tubed to S port on the actuator control box 46. O port on the box 46 is tubed to the actuators 48-48. If the control box 46 is in the outside atmosphere, it must be covered and insulated, depending on the climate.
The improved air stabiliæation system 10 has a cabinet 50 (see FIGS. 1 and 2) with plate~ 52 and plates 54-54. Air intake channel opening 56 and air exhaust channel opening 58 are pro-vided for the intake of atmospheric air and the exhaust of build-ing air, respectively~ from and to a modugate chamber 59.
A simple modugate damper 60 is pivotally connected within the chamber 59 in proximity to channel openings 56 and 58 to regulate the air flow through the channel openings 56 and 58 to allow either intake of ambient air to exhaust air from the building 16 or to blend air from the building 16 with outside air to circulate only building air by completely closing off any intake of ambient air and exhaust of building air. Modugate damper 60 is pneumati-cally activated by pneumatic assembly 61 which is operated by thermostat 12. Chamber 59 also includes a building air inle~
opening 62 and a building air outlet opening 64. The limits of rotation of the single damper blade 60 within the chamber 59 are set by protrusion members 66 and 68. Member 66 is attached to the top of the outlet opening 64 and member 68 is secured in proximlty to the bottom of the inlet opening 62.
In a preferred embodiment of the invention (see FIGS. 3,6,7,8) modugate damper 60 comprises a modiied wedge having one end 70 deining an arcuate shape and opposed end 72 tapering to an edge.
In another preferred embodiment of the invention (see FIG. 9) the modugate damper 60 includes a damper blade 74 and an approximately 60 arc section 76 integrally bound to the blade 74 such that the blade 74 rotates about 60 within the chamber 59.
Air stabilization system 10 additionally comprises a spray chamber means, generally illustrated as 78, and a fan means, generally illustrated as 80, in communication with the spray chamber means 78 for circulating air from the chamber means 78 into the building 16.
Spray chamber means 78 is controlled by humidistat 14 and includes a pair of spray banks 82-82; a sump 84 positioned in the bottom of chamber means 78 for catching and holding water that is sprayed from banks 82-82; and an eliminator 86 having a cross section defining a chevron (see FIG. 4). A water pump (not shown in the drawings3 actuates spray banks 82-~2 per humidi-stat 14.
Fan means 80 includes an air foil type fan 88 operated by a motor 90.
With continuing reference to the drawings for operation of the invention, building air is delivered from mill 32, filter 30 and collector 28 through air inlet opening 62 by filter fan 34 ~mder suficient positive pressure to either vent all or a por-tion of the building air through the unrestricted exhaust opening 58, or all or a portion of the building air through outlet opening 64 and into the spray chamber means 7~, depending on the position o the single damper bl~de 60. FIGS. 3 and 8 illustrate the single damper blade 60 in a full air exhaust setting wherein warm plant air is completely exhausted through exhaust opening 58 by fan 34 while simultaneously cooler air is drawn in from the outside through opening 56 by fan means 80. FIGS. 6 and 9 illustrate the single damper blade 60 in a full air return setting wherein no building air is exhausted through exhaust opening 58 and no cooler air is drawn in from the outside through opening 56; only building air is circulated from fan 34 through the spray chamber mear,s 78 and back into the building 16 by fan means 80. In the preferred (and most frequent) intermediate setting (see FIG~ 7 some building air is exhausted through exhaust opening 58 and the remainder is passed around tapered end 72 to be admixed with the outside air prior to being passed into the spray chambPr means 78 to be humidified. The position of the damper blade 60 depends on the amount of heat needed in the air. If more heat is needed, the tapered end 72 (or blade 74) will move (thermo-statically controlled by thermostat 12) to recycle more warm building air, while the arcuate shap~d end 70 (or arc section 76) moves to reduce the intake of outdoor air, resulting in a warmer mixture. If less heat is needed to satisfy the termostat 12, the tapered end 7~ will move in the opposite direction which will open the arcuate shaped end 70 ~e.g. to 60% open~ to increase the intake of outdoor air and close the tapered end 72 (e.g. to 4~%
closed) to recycle less warm building air. Thus, the resulting mixture of air will be 40% recycle and 60% eghaust. Thus, the air volume from outdoors is matched by the volume exhausted outdoors.
This maintains constant pressure in the building 16, while the temperature and the total air through put (through chamber means 78) also remains constant. Utilization of the single blade damper means 60 with spray chamber 78 is not mandatory; it may be used independently of the spray chamber 78 where humidity control is not essentialO
While the present invention has been described herein with reference to particular embodiments thereo, a latitud~ of modi-fications, various changes, and substitutions are intended in the foregoing disclosure, and it will b~ appreciated that in so~!e instances some features of the invention will be employed without a corresponding use of other features without departing rom the scope of the invention as set forth.
Claims (2)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In an improved air stabilization system used in a building ventilation system which has an air propulsion means for delivering and/or intaking air through a plurality of openings in a housing having a damper assembly, wherein the improvement com-prises a single mixing damper blade means rotatably positioned within the housing such as to regulate the air flow through the openings of the housing to allow either intake of ambient air to exhaust air from the building or to blend air from the building with outside air or to circulate only building air by completely closing off any intake of ambient air and exhaust of building air;
said housing additionally includes at least one protrusion member secured to the inside thereof in order to define the limits of rotation of the single damper blade means within the housing; the openings of said housing comprise an ambient air intake opening, an ambient exhaust opening, a building air inlet opening, and an outlet opening; said housing comprises an outlet protrusion member attached to the top of said outlet opening and an inlet protrusion member secured in proximity to the bottom of said building air inlet opening; a spray chamber means in communication with said outlet opening of said housing, said spray chamber means comprises a sump means positioned within the bottom thereof, a spray bank means, and an eliminator means having a cross section defining a chevron; a fan means in communication with the spray chamber means for circulating air from the chamber means into the building; said damper blade means comprises a modified wedge having one end with a first axis of arcuate shape and another opposed end with a second axis and tapering to an edge, said first axis and said second axis having an angle with respect to each other of greater than about 90° but less than about 180°.
said housing additionally includes at least one protrusion member secured to the inside thereof in order to define the limits of rotation of the single damper blade means within the housing; the openings of said housing comprise an ambient air intake opening, an ambient exhaust opening, a building air inlet opening, and an outlet opening; said housing comprises an outlet protrusion member attached to the top of said outlet opening and an inlet protrusion member secured in proximity to the bottom of said building air inlet opening; a spray chamber means in communication with said outlet opening of said housing, said spray chamber means comprises a sump means positioned within the bottom thereof, a spray bank means, and an eliminator means having a cross section defining a chevron; a fan means in communication with the spray chamber means for circulating air from the chamber means into the building; said damper blade means comprises a modified wedge having one end with a first axis of arcuate shape and another opposed end with a second axis and tapering to an edge, said first axis and said second axis having an angle with respect to each other of greater than about 90° but less than about 180°.
2. In an improved air stabilization system used in a building ventilation system which has an air propulsion means for delivering and/or intaking air through a plurality of openings in a housing having a damper assembly, wherein the improvement comprises a single mixing damper blade means rotatably positioned within the housing such as to regulate the air flow through the openings of the housing to allow either intake of ambient air to exhaust air from the building or to blend air from the building with outside air or to circulate only building air by completely closing off any intake of ambient air and exhaust of building air;
said housing additionally includes at least one protrusion member secured to the inside thereof in order to define the limits of rotation of the single damper blade means within the housing; the openings of said housing comprise an ambient air intake opening, an ambient exhaust opening, a building air inlet opening, and an outlet opening; said housing comprises an outlet protrusion member attached to the top of said outlet opening and an inlet protrusion member secured in proximity to the bottom of said building air inlet opening; a spray chamber means in communication with said outlet opening of said housing, said spray chamber means com-prises a sump means positioned within the bottom thereof, a spray bank means, and an eliminator means having a cross section defining a chevron; a fan means in communication with the spray chamber means for circulating air from the chamber means into the building; said damper blade means comprises a damper blade section and an opposed blade section, an approximately 60° arc section integrally bound to said blade section, said damper blade section having a first axis and said opposed blade section having a second axis, said first axis and said second axis having an angle with respect to each other greater than about 90° but less than about 180° , said damper blade section and said opposed blade section rotate about 60° within the housing about their axis.
said housing additionally includes at least one protrusion member secured to the inside thereof in order to define the limits of rotation of the single damper blade means within the housing; the openings of said housing comprise an ambient air intake opening, an ambient exhaust opening, a building air inlet opening, and an outlet opening; said housing comprises an outlet protrusion member attached to the top of said outlet opening and an inlet protrusion member secured in proximity to the bottom of said building air inlet opening; a spray chamber means in communication with said outlet opening of said housing, said spray chamber means com-prises a sump means positioned within the bottom thereof, a spray bank means, and an eliminator means having a cross section defining a chevron; a fan means in communication with the spray chamber means for circulating air from the chamber means into the building; said damper blade means comprises a damper blade section and an opposed blade section, an approximately 60° arc section integrally bound to said blade section, said damper blade section having a first axis and said opposed blade section having a second axis, said first axis and said second axis having an angle with respect to each other greater than about 90° but less than about 180° , said damper blade section and said opposed blade section rotate about 60° within the housing about their axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000433774A CA1216573A (en) | 1983-08-03 | 1983-08-03 | Rotary mixing damper method and means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000433774A CA1216573A (en) | 1983-08-03 | 1983-08-03 | Rotary mixing damper method and means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1216573A true CA1216573A (en) | 1987-01-13 |
Family
ID=4125788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000433774A Expired CA1216573A (en) | 1983-08-03 | 1983-08-03 | Rotary mixing damper method and means |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1216573A (en) |
-
1983
- 1983-08-03 CA CA000433774A patent/CA1216573A/en not_active Expired
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| MKEX | Expiry |