US20180073763A1 - Discharge system and methods - Google Patents

Discharge system and methods Download PDF

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Publication number
US20180073763A1
US20180073763A1 US15/703,743 US201715703743A US2018073763A1 US 20180073763 A1 US20180073763 A1 US 20180073763A1 US 201715703743 A US201715703743 A US 201715703743A US 2018073763 A1 US2018073763 A1 US 2018073763A1
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Prior art keywords
air
discharge system
sensor
intake
exhaust
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Abandoned
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US15/703,743
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English (en)
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Arsalan Afrakhteh
Arash Afrakhteh
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Individual
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Individual
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Priority to US15/703,743 priority Critical patent/US20180073763A1/en
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    • F24F11/025—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/0079—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/001—Ventilation with exhausting air ducts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/40—Pressure, e.g. wind pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present disclosure is related to a fluid (liquid or gas) discharge system, for example for evacuating and discharging air from a building or another enclosure or space.
  • Exhaust systems can be used to exhaust air out of a building, room, or other enclosure or space for a number of different purposes.
  • an exhaust system can be used in a laboratory setting (e.g., pharmaceutical lab) to exhaust air contaminated with chemicals or other substances from the laboratory.
  • the discharge velocity of an exhaust system is required to remain relatively constant. This requirement can be present to ensure that a certain discharge plume is created and that exhaust from the exhaust system is adequately dispersed out of the building, room, enclosure, etc.
  • Existing exhaust systems sometimes seek to meet this requirement by utilizing a bypass intake.
  • the present disclosure therefore provides a unique discharge system and methods of operation thereof that overcome the deficiencies of existing systems.
  • Example 1 includes a discharge system comprising an intake passage fluidly coupled to a venting system and to an intake plenum or a main intake duct, an air mover fluidly coupled to the intake plenum, the air mover being positioned within a housing and coupled to a motor configured to drive the air mover at varying speeds, a plurality of exhaust passages fluidly coupled to the housing of the air mover, each of the exhaust passages including a damper, wherein each damper is movable from a fully closed position in which the damper substantially completely occludes its exhaust passage to a fully open position in which air flow through each exhaust passage is at a maximum for its respective damper, a first sensor positioned upstream of the air mover, the first sensor configured to at least measure volumetric flow of air moving towards the air mover, a second sensor positioned upstream of the air mover, the second sensor configured to at least measure pressure inside of the intake plenum, and a controller communicatively coupled to the first and second sensors.
  • the controller can comprise circuitry configured to perform the operations of, in response to readings from the first and/or second sensors, changing the position of at least a first of the plurality of dampers between its fully open and closed positions, and, in response to readings from the first and/or second sensors, changing the speed at which the air mover operates.
  • Example 2 includes the discharge system of Example 1 and a plurality of actuators, each actuator being coupled to a respective one of the plurality of dampers.
  • Example 3 includes the discharge system of any one of or any combination of Examples 1-2, wherein the second sensor is positioned within the intake plenum.
  • Example 4 includes the discharge system of any one of or any combination of Examples 1-3, wherein the first sensor is positioned within an intake passage leading into the housing that contains the air mover.
  • Example 5 includes the discharge system of any one of or any combination of Examples 1-4, wherein the air mover is a fan or a pump.
  • Example 6 includes the discharge system of any one of or any combination of Examples 1-5, wherein the circuitry is configured to perform the operations of receiving a volumetric flow reading from the first sensor, receiving a pressure reading from the second sensor, when the pressure reading from the second sensor rises above a pre-set pressure threshold, causing the motor to decrease its speed, and when a volumetric flow reading from the first sensor rises above a pre-set volumetric flow threshold, causing one or more of the plurality of dampers to move from the fully closed position to the fully open position.
  • Example 7 includes the discharge system of any one of or any combination of Examples 1-6 and a bypass intake passage fluidly coupled to the intake plenum.
  • Example 8 includes the discharge system of Example 7, wherein the bypass intake passage includes at least one of the plurality of dampers.
  • Example 9 includes a discharge system comprising an intake passage fluidly coupled to a venting system and to an intake plenum or a main intake duct, an air mover fluidly coupled to the intake plenum, the air mover being positioned within a housing and coupled to a motor configured to drive the air mover at varying speeds, a plurality of exhaust passages fluidly coupled to the housing of the air mover, each of the exhaust passages including a damper, wherein each damper is movable only between a fully closed position in which the damper substantially completely occludes its exhaust passage and a fully open position in which air flow through each exhaust passage is at a maximum for its respective damper, one or more sensors configured to measure air-flow conditions inside the discharge system, and a controller communicatively coupled to the one or more sensors.
  • the controller can comprise circuitry configured to perform the operations of, in response to readings from the one or more sensors, changing the position of at least a first of the plurality of dampers between its fully open and fully closed positions, and changing the speed
  • Example 10 includes the discharge system of Example 9, wherein the one or more sensors is configured to at least measure volumetric flow of air moving towards the air mover.
  • Example 11 includes the discharge system of Example 10, wherein the one or more sensors comprise a sensor configured to at least measure pressure inside of the intake plenum.
  • Example 12 includes the discharge system of any one of or any combination of Examples 9-11 and a plurality of actuators, each actuator being coupled to a respective one of the plurality of dampers.
  • Example 13 includes the discharge system of Example 11, wherein the circuitry is configured to perform the operations of receiving a volumetric flow reading from a first of the one or more sensors, receiving a pressure reading from a second of the one or more sensors, when the pressure reading from the second sensor rises above a pre-set pressure threshold, causing the motor to decrease its speed, and when a volumetric flow reading from the first sensor rises above a pre-set volumetric flow threshold, causing one or more of the plurality of dampers to move from the fully closed position to the fully open position.
  • Example 14 includes the discharge system of any one of or any combination of Examples 9-13 and a bypass intake passage fluidly coupled to the intake plenum.
  • Example 15 includes the discharge system of Example 14, wherein the bypass intake passage includes at least one of the plurality of dampers.
  • Example 16 includes a method of venting and discharging air from a space comprising sensing volumetric flow and/or pressure of air moving through a passage of a discharge system using one or more sensors, operating an air mover of the discharge system at a first speed to move air through the passage of the discharge system to maintain proper pressure in an intake plenum, moving air through a plurality of exhaust passages of the discharge system by operating the air mover at the first speed, each of the plurality of exhaust passages including a damper, and in response to readings from the one or more sensors: (i) changing the speed of the air mover to a second speed different from the first speed to alter the speed at which the air flows through the passage, and (ii) moving a first one of the dampeners from a fully closed position in which the first damper substantially completely occludes air flow inside its exhaust passage to a fully open position in which air flow through its exhaust passage is at a maximum.
  • Example 17 includes the method of Example 16, wherein the one or more sensors comprise a first sensor, and the method further comprises sensing volumetric flow of the air moving through the discharge system using the first sensor.
  • Example 18 includes the method of Example 17, wherein the one or more sensors comprise a second sensor, and the method further comprises sensing the pressure of the air moving through the passage using the second sensor.
  • Example 19 includes the method of any one of or any combination of Examples 16-18, further comprising, in response to readings from the one or more sensors, moving the first damper from its fully open position back to its fully closed position.
  • Example 20 includes the method of any one of or any combination of Examples 16-19, further comprising performing steps (i) and (ii) of claim 16 to keep an exhaust velocity of the air moving through the plurality of exhaust passages and out of an exhaust area of the discharge system within a pre-defined velocity range.
  • FIG. 1 is a side perspective view of a first example of a discharge system.
  • FIG. 2 is a side perspective view of a second example of a discharge system.
  • FIG. 3 is a side perspective view of a third example of a discharge system.
  • FIG. 4 is a schematic view of a discharge system as used in an exemplary building.
  • the present disclosure is directed to discharge systems and methods, which can utilize a unique arrangement of passages and other components to ensure that air is discharged from the system within an acceptable range of velocities.
  • the present disclosure also encompasses installations and buildings in which the aforementioned discharge systems are installed and operated.
  • Discharge system 10 can have a plurality of passages or ducts 12 , each passage 12 opening out into an exit or exhaust opening 14 . As shown, air can move in direction 15 as it is exhausted from discharge system 10 .
  • Passages 12 and exhaust openings 14 are shown to be a rectangular or square shaped, but any shape is contemplated by the disclosure, including circular, oval, diamond, polygonal, or another suitable shape.
  • Within each passage 12 can be a damper or valve 16 . Dampers 16 can be coupled to an actuator or multiple actuators 18 , which are configured to move dampers 16 between open and closed states.
  • a single actuator 18 can be coupled to each damper 16 , and the single actuator 18 can be configured to move each of the dampers 16 , independently or in conjunction, between their open and closed states.
  • individual actuators 18 can be coupled to each damper 16 , and each actuator can be configured to move its respective damper 16 between its opened and closed states.
  • the individual actuators 18 can also be programmed to move certain dampers 16 between their opened and closed states in conjunction with each other.
  • Actuators 18 can each include a controller, circuitry (e.g., a processor(s), memory, and other computing components), and a motor controlled by the controller and circuitry. Each actuator 18 can drive dampers 16 between their opened and closed states.
  • the open state can refer to a state in which the respective damper 16 does not occlude air flow through its passage 12 to any material degree.
  • the open state can refer to a state in which the respective damper 16 is completely open to allow full or maximum air flow through its passage 12 .
  • the closed state can refer to a state in which the respective damper 16 occludes air flow completely or substantially completely through its passage 12 .
  • the closed state can refer to a state in which the respective damper 16 is completely or substantially completely closed to completely or substantially completely shut off air flow through its passage 12 .
  • damper 16 can form an air-tight seal with an internal wall of its respective passage 12 to prevent air flow past damper 16 within its passage 12 .
  • dampers 16 can only move between the open and closed states and cannot move to an intermediate state or position (e.g., partly open or closed).
  • actuators 18 can be linear actuators or any other suitable actuator
  • dampers 16 can be rotating blade dampers, parallel blade dampers, opposed blade dampers, gate dampers, butterfly dampers and any other type of isolation dampers.
  • upstream of dampers 16 can be a fan housing 28 , which can contain a fan, pump, or another fluid mover (not shown), in this example, configured to move air towards dampers 16 and out of exhaust openings 14 .
  • a motor 24 can be coupled to the fan or air mover to drive the fan or air mover and cause air to move in discharge direction 15 .
  • Motor 24 can itself be coupled to a motor variable speed drive 22 , which can control and/or set the different speeds at which motor 24 , and thus the fan or air mover, operate.
  • motor 24 can be a variable-speed motor 24 , whose speed set points can be controlled by variable speed drive 22 .
  • Variable speed drive 22 can cause the speed of motor 24 , and thus the fan or air mover, to increase or decrease depending upon other states within discharge system 10 , as described in more detail below.
  • Variable speed drive 22 can also be coupled to a controller 26 , which can be programmable or manually-operated to set the speed set points for variable speed drive 22 .
  • controller 26 can be a control panel that is part of a building automation system, or another controller configured to manually or programmably control variable speed drive 22 , and thus motor 24 . If controller 26 is programmable, it can be programmed with a particular algorithm 27 to operate discharge system 10 in an efficient manner, as detailed more fully below.
  • Controller 26 can include circuitry (e.g., a processor(s), memory, and other computing components) for running algorithm 27 and transmitting commands to other components within discharge system 10 , as detailed more fully below.
  • circuitry e.g., a processor(s), memory, and other computing components
  • the circuitry or any circuitry or computing components disclosed herein can be temporary, permanent, an integrated circuit, an application-specific circuit, a computer with a processor(s) and memory, or other suitable circuitry.
  • Fan housing 28 can be coupled to an intake passage or duct 32 , which can in turn be coupled to an intake plenum 30 .
  • One or more (e.g., a plurality) of intake demand value sensors 34 can be positioned inside of intake plenum 30
  • one or more (e.g., a plurality) of discharge sensors 20 can be positioned inside of intake passage 32 .
  • Each intake demand sensor 34 and each discharge sensor 20 can be coupled or associated with a transmitter configured to transmit (e.g., wirelessly) values read at the position of the respective sensor 34 , 20 .
  • Intake demand sensor 34 can measure pressure, flow, velocity, and/or other values to determine whether intake demand requirements are being met.
  • intake demand sensor 34 can measure pressure, flow, velocity, and/or other values to determine whether pressure is sufficient within intake plenum 30 to draw air through one or more (e.g., a plurality) of intake exhaust passages 36 , and/or whether flow or velocity of air through plenum 30 is sufficient to draw air through intake exhaust passages 36 and move the air towards the fan (not shown).
  • different states of discharge system 10 e.g., its damper 16 positions and/or motor 24 speed
  • discharge sensor 20 inside intake passage 32 can be configured to measure and transmit (e.g., via its associated transmitter) the volume of air moving through intake passage 32 , velocity of air through intake passage 32 , and/or other values to determine the air discharge volume.
  • discharge sensor 20 can be configured to measure volumetric velocity (e.g., volumetric flow rate) or flow of air moving through intake passage 32 (e.g., cubic-feet per minute (CFM)).
  • volumetric velocity e.g., volumetric flow rate
  • flow of air moving through intake passage 32 e.g., cubic-feet per minute (CFM)
  • CFM cubic-feet per minute
  • an appropriate discharge velocity can be created and maintained through passages 12 and out of exhaust openings 14 by changing the position of dampers 16 and/or altering the speed of motor 24 . Altering the position of dampers 16 can increase or decrease a discharge area through which the aforementioned volume of air must travel, which can impact the discharge velocity of the air out of exhaust openings 14 .
  • discharge system 10 can also include one or more (e.g., a plurality) of exhaust intake passages 36 , which can be fluidly connected to intake plenum 30 .
  • Exhaust intake passages 36 are referred to as such since such passages 36 can both exhaust air from a building, room (e.g., laboratory), or another enclosure and intake air into discharge system 10 .
  • exhaust intake passages 36 can be fluidly coupled to an exhaust system inside the building, room (e.g., laboratory), or other enclosure.
  • FIG. 4 illustrates an exemplary schematic of discharge system 10 connected to such a laboratory.
  • the exhaust system can, for example, take the form of a hood exhaust (e.g., as commonly used in pharmaceutical or other laboratories), or any other exhaust system.
  • the aforementioned exhaust system can be regulated between multiple different orientations, including but not limited to completely open, partly open, intermediate, partly closed, and completely closed.
  • dampers 16 can be provided to regulate the exhaust system (e.g., hood exhaust).
  • hood exhaust e.g., hood exhaust
  • such exhaust systems can be controlled by a user between a number of different set points to change the quantity of air removed or suction produced by the exhaust system.
  • the exhaust system can be placed into a state in which air flow into exhaust intake passages 36 is occluded or otherwise below its maximum capacity (e.g., by closing a damper 16 ( FIG. 4 ) somewhat).
  • discharge system 10 can respond accordingly to ensure that air is discharged from discharge system 10 out of exhaust openings 14 at or within a certain range of discharge velocities. As shown in FIG. 1 , air flow can occur in direction 38 through exhaust intake passages 36 .
  • Intake plenum 30 can further be coupled to one or more bypass intake(s) 40 .
  • Bypass intake 40 can be used in fail-safe situations or other scenarios in which increased air flow is desired inside discharge system 10 .
  • Bypass intake(s) 40 can allow air flow in direction 42 , and can include a damper 44 inside bypass intake passage 40 .
  • Damper 44 can be positioned in a continuum of open and closed positions to allow certain levels of air flow into bypass intake 40 . For instance, during operation, damper 44 can be moved to occlude bypass intake passage 40 by anywhere between about 0-100%.
  • Bypass intake 40 can further include one or more (e.g., a plurality) of sensors (not shown) that can measure pressure, flow, volume, and/or other values to determine an amount or volume of air being drawn through bypass intake passage 40 .
  • bypass damper 44 can be controlled without any bypass intake sensors via inputs from intake demand sensor 34 and/or a combination of inputs from controller 26 .
  • Each bypass intake sensor can be coupled or associated with a transmitter, as with the other sensors detailed above, to transmit readings from the sensor to other components of discharge system 10 .
  • bypass intake 40 can be opened during operation as a fail-safe (i.e., if air flow inside system 10 is not sufficient to maintain discharge air velocity), or during transition periods to ensure a smooth transition.
  • discharge system 10 The operation of discharge system 10 is now described. It should be understood that the order of operation of certain elements or steps below is not essential, and that no particular order is implied in terms of how the elements or steps are laid out in the disclosure.
  • discharge system 10 can be a discharge system for a building, laboratory (e.g., pharmaceutical laboratory), room, enclosure, or another space that is in need of exhaust or venting.
  • the disclosure uses a laboratory as an example, particularly in FIG. 4 , but it is to be understood that discharge system 10 can be useful in a number of different settings or spaces.
  • Exhaust intake passages 36 can be fluidly coupled to a venting or exhaust system within the laboratory or other space requiring venting, as shown in FIG. 4 .
  • a vent hood or other venting mechanism can be provided in the laboratory or other space in need of venting, which can be positioned in a number of different states.
  • the vent hood can be set to operate at full venting capacity, it can be completely closed when venting is not needed in the laboratory or space of interest, or it can occupy a number of intermediate set points to control the amount of venting or air flow within the laboratory or other vent space.
  • the vent hood can have one or more (e.g., a plurality) of dampers or valves 16 , as shown in FIG. 4 , that can serve to occlude air flow into exhaust intake passages 36 .
  • dampers or valves 16 can be moved to occlude air flow into exhaust intake passages 36 by some degree or percentage (e.g., anywhere between about 0-100%).
  • FIG. 4 also depicts an air handler system for providing air back into the laboratory, which itself can utilize dampers 16 and ducts, as shown, for air supply and possibly return.
  • Passages 12 of discharge system 10 and the exhaust openings 14 thereof can be positioned to exhaust air outside of the laboratory.
  • exhaust openings 14 can be positioned to exhaust air outside of the building containing the laboratory to the external environment.
  • bypass damper 44 can be arranged by the controller 26 so as to be able to draw air into discharge system 10 , through bypass intake 40 when needed (e.g., when discharge control dampers 16 in FIG. 1 fail to close, VSD 22 fails to reduce fan speed, or when the system is in transition modes).
  • controller 26 can be programmed with set points (e.g., thresholds) for discharge sensor 20 , intake sensor 34 , and/or the bypass intake sensor (not shown), which can act to control system 10 in terms of the position of its dampers 16 , 44 and/or the speed of motor 24 and the fan (not shown) coupled thereto.
  • set points e.g., thresholds
  • controller 26 can be a control panel that is part of a building automation system, or another controller configured to manually or programmably control variable speed drive 22 , and thus motor 24 .
  • controller 26 can receive data transmitted from discharge sensor 20 , intake sensor 34 , and/or the bypass intake sensor (not shown), determine if such data meets the set points by way of algorithm 27 , and then transmit directives to other components of discharge system 10 (e.g., (i) actuators 18 and dampers 16 , and (ii) motor 24 ) to change air flow through system 10 .
  • a demand set point for intake sensor 34 in the form of a pressure set point (e.g., threshold) or pressure range can be programmed into sensor 34 and/or provided by controller 26 .
  • air flow into exhaust intake passages 36 might be reduced by, for instance, closing or opening a vent hood or another venting mechanism by some amount, as shown in FIG. 4 . If, as an example, the vent hood or other venting mechanism were closed somewhat to lessen air flow into exhaust intake passages 36 (e.g., during off-peak hours or because a certain vent hood was not being used), the pressure inside of intake plenum 30 might build up due to lack of air flow. This can also cause the discharge velocity of air out of exhaust passages 12 to drop.
  • discharge sensor 20 can act to read the volume of air travelling through intake passage 32 , transmit such readings to controller 26 and/or directly to actuators 18 , which can then act to open or close any number of dampers 16 to maintain a relatively constant air discharge velocity or a discharge velocity within a certain acceptable range.
  • discharge sensor 20 can be configured to read the volume of air travelling through intake passage 32 over a certain period of time (e.g., CFM, etc.) Such readings can, when sent to controller 26 and processed by way of algorithm 27 , cause controller 26 to transmit a signal to actuators 18 to open or close any number of dampers 16 .
  • discharge system 10 can ensure that the discharge velocity of air out of exhaust passages 12 and the corresponding exhaust openings 14 remains relatively constant or within a certain range.
  • discharge system 10 could calculate that 1 ft 2 of area within exhaust passages 12 would be needed to meet the required discharge velocity of 3000 ft/min. Any number of dampers 12 could then be opened or closed, as needed, so that a certain combination of exhaust passages 12 satisfies the 1 ft 2 area criteria.
  • discharge system 10 can respond to changes in vent or exhaust demand, while maintaining a relatively constant discharge air velocity (e.g., a discharge air velocity within a certain range).
  • a relatively constant discharge air velocity e.g., a discharge air velocity within a certain range.
  • discharge system 10 could act, by way of controller 26 and algorithm 27 , to increase the speed of motor 24 and/or open certain dampers 16 to ensure a relatively constant discharge air velocity.
  • readings from discharge sensor 20 and intake demand sensor 34 can be transmitted to controller 26 so as to cause motor 24 to alter its speed (e.g., increase or decrease its speed) for changing fan speed, and/or to open or close any number of dampers 16 within exhaust passages 12 so that air is discharged out of exhaust openings 14 at a pre-defined acceptable velocity or within a pre-defined acceptable velocity range.
  • Discharge system 10 is therefore dynamic while maintaining a constant discharge velocity or a discharge velocity within a set range.
  • Bypass intake 40 can be used in fail-safe conditions or in other scenarios to ensure proper air flow within discharge system 10 . For instance, if certain dampers 16 were malfunctioning, all dampers 16 within discharge system 10 (not the laboratory) might be moved to a completely open position and then bypass intake 40 could be used to ensure that the discharge velocity of air was relatively constant or within a certain range of velocities. In an example, with all dampers 16 of discharge system 10 in an open condition, if exhaust intake passages 36 were occluded (e.g., because the vent hood was closed somewhat or completely closed), intake demand sensor 34 could read an increase in pressure inside of intake plenum 30 .
  • bypass intake 40 could cause pressure to equalize inside of intake plenum 30 and allow for an appropriate volume of air to flow through intake passage 32 and out of exhaust passages 12 and openings 14 at a relatively constant discharge velocity or within a range of discharge velocities.
  • bypass damper 44 unlike dampers 16 (in an example), can be configured to move amongst a continuum of open or closed positions. For instance, bypass damper 44 can be configured to move so that it occludes bypass intake 40 by anywhere between about 0-100%. At complete occlusion, bypass damper 44 can form an air-tight seal with bypass intake 40 to cut off air flow through bypass intake 40 .
  • Bypass intake 40 can also be used to smooth transitions of discharge system 10 .
  • bypass intake 40 can be opened by a certain amount to provide for the correct flow and velocity conditions in discharge system 10 .
  • discharge system 10 ′ can have any of the components of discharge system 10 , and can function in a like or the same manner as described above, unless set forth differently below.
  • Discharge system 10 ′ can be similar to discharge system 10 , except that discharge system 10 ′ can have different positions for its exhaust passages 12 ′. As shown, exhaust passages 12 ′ can be positioned upstream of dampers 16 ′ in a main stack 11 ′. In addition, exhaust passages 12 ′ can have their own dampers 16 ′ that can, as detailed previously, move between open and closed states to either open flow into exhaust passages 12 ′ or close flow off from exhaust passages 12 ′. In operation, discharge system 10 ′ can have its dampers 16 ′ in any number of different orientations (e.g., opened/closed), in any combination, to affect flow through discharge system 10 ′, and consequently, the discharge velocity of air out of system 10 .
  • orientations e.g., opened/closed
  • dampers 16 ′ of discharge system 10 ′ can be positioned to ensure that a relatively constant discharge air velocity is exhausted out of discharge system 10 ′, or that the discharge air velocity stays within a pre-defined acceptable range.
  • damper 16 ′ downstream of exhaust passages 12 ′ can be closed, and either or both dampers 16 ′ inside of exhaust passages 12 ′ can be opened so that air is exhausted solely out of exhaust passages 12 ′.
  • damper 16 ′ downstream of exhaust passages 12 ′ can be a single damper with multiple damper blades that can be positioned in opened/closed states, as detailed above.
  • either or both dampers 16 ′ inside of exhaust passages 16 ′ can be closed, damper 16 ′ inside main stack 11 ′ can be opened to allow air flow out of main stack 11 ′.
  • the different combination of positions of dampers 16 ′ can be selected and actuated by actuators 18 ′, controlled by way of controller 26 ′, so that a relatively constant air discharge velocity or a range of velocities is maintained.
  • the position of dampers 16 ′ of discharge system 10 ′ and the speed of its motor 24 ′ (and consequently its fan) can be controlled by way of controller 26 ′, as operated through algorithm 27 ′ and the readings from sensors 20 ′, 34 ′.
  • discharge system 10 ′′ a third example of a discharge system 10 ′′ is shown.
  • like reference numerals refer to like elements, except that a double-prime designation is added with respect to the components of discharge system 10 ′′.
  • discharge system 10 ′′ can have any of the components of discharge systems 10 , 10 ′′, and can function in a like or the same manner as described above, unless set forth differently below.
  • Discharge system 10 ′′ is similar to discharge systems 10 , 10 ′, except that discharge system 10 ′′ can have a different configuration and/or shape for its exhaust passages 12 ′′ and main stack 11 ′′. As shown in FIG. 3 , exhaust passages 12 ′′ can be circular or oval, and main stack 11 ′′ can be circular or oval, as well. Exhaust passages 12 ′′ can be positioned inside main stack 11 ′′, as illustrated. In addition, as with discharge system 10 , exhaust passages 12 ′′ of discharge system 10 ′′ can each have their own damper 16 ′′. Discharge system 10 ′′ can operate similarly to discharge system 10 . Thus, its operation is not discussed in detail herein.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
US15/703,743 2016-09-13 2017-09-13 Discharge system and methods Abandoned US20180073763A1 (en)

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US15/703,743 US20180073763A1 (en) 2016-09-13 2017-09-13 Discharge system and methods

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180235106A1 (en) * 2017-02-16 2018-08-16 Dell Products, Lp System and Method for Injecting Cooling Air into Servers in a Server Rack

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112718766B (zh) * 2020-12-04 2023-10-03 大连八方流体技术有限公司 一种用于有害气体的净化及排放装置

Citations (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US669547A (en) * 1900-08-02 1901-03-12 Jacob William Patersson Life-saving device.
US2609183A (en) * 1948-09-02 1952-09-02 Honeywell Regulator Co Control apparatus
US2793812A (en) * 1952-12-22 1957-05-28 Westinghouse Electric Corp Air conditioning apparatus
US3563306A (en) * 1969-09-15 1971-02-16 Gene W Osheroff Apparatus for air-conditioning systems
US3766906A (en) * 1972-02-07 1973-10-23 Jenn Air Corp Dining arrangement
US4008756A (en) * 1975-12-17 1977-02-22 Armer Construction Company Apparatus for air conditioning employing variable terminal box
US4019566A (en) * 1974-11-29 1977-04-26 Carrier Corporation Air conditioning system
US4160407A (en) * 1977-11-18 1979-07-10 Bell Telephone Laboratories, Incorporated Ventilating system
US4203485A (en) * 1976-12-17 1980-05-20 Aronoff Melvin S Multizone air terminal
US4437608A (en) * 1982-05-17 1984-03-20 Smith Robert B Variable air volume building ventilation system
US4495986A (en) * 1982-06-21 1985-01-29 Carrier Corporation Method of operating a variable volume multizone air conditioning unit
US4531573A (en) * 1982-06-21 1985-07-30 Carrier Corporation Variable volume multizone unit
US4732318A (en) * 1986-01-17 1988-03-22 Osheroff Gene W Velocity controlled forced air temperature control system
US4795088A (en) * 1987-06-11 1989-01-03 Mitsubishi Denki Kabushiki Kaisha Air conditioning system
US4890666A (en) * 1983-09-02 1990-01-02 Carrier Corporation Method for controlling an air distribution system using ΔT
US5205783A (en) * 1991-08-22 1993-04-27 Accu*Aire Systems, Inc. Air flow control equipment in chemical laboratory buildings
US5439414A (en) * 1993-07-26 1995-08-08 Landis & Gyr Powers, Inc. Networked fume hood monitoring system
US5931227A (en) * 1997-11-24 1999-08-03 Graco Mechanical, Inc. Conversion of constant volume heating/air conditioning systems
US6071188A (en) * 1997-04-30 2000-06-06 Bristol-Myers Squibb Company Damper and exhaust system that maintains constant air discharge velocity
US6186744B1 (en) * 1996-10-12 2001-02-13 Synetics Solutions Inc. Volumetric airflow indicator and control device
US20030104778A1 (en) * 2001-08-28 2003-06-05 Mingsheng Liu Multi-stack exhaust system
US20060117769A1 (en) * 2004-12-07 2006-06-08 American Standard International Inc. Ventilation controller
US20070202795A1 (en) * 2006-02-24 2007-08-30 Greenheck Fan Corporation Induced flow fan with outlet flow measurement
US7726582B2 (en) * 2005-01-18 2010-06-01 Federspiel Corporation Method and apparatus for converting constant-volume supply fans to variable flow operation
US20100301123A1 (en) * 2009-05-27 2010-12-02 Bruce Dorendorf Air Quality Control System
US8326464B2 (en) * 2008-08-29 2012-12-04 Trane International Inc. Return fan control system and method
US20120322358A1 (en) * 2011-06-14 2012-12-20 Wendorski Ronald L Variable-volume exhaust system
US20140127987A1 (en) * 2012-11-02 2014-05-08 Flextronics Ap, Llc Energy saving-exhaust control and auto shut off system
US20140131459A1 (en) * 2009-05-27 2014-05-15 Direct Success, Llc Remote control system for controlling operation of a fan assembly
US20150011153A1 (en) * 2012-02-10 2015-01-08 Josef Oswald Ventilation device for clean room applications
US20150114596A1 (en) * 2013-10-31 2015-04-30 Robert M. Rohde Energy efficient hvac system
US20150211749A1 (en) * 2014-01-28 2015-07-30 Russell Robison Cooking exhaust hood ventilation system and related methods
US9423128B2 (en) * 2008-01-18 2016-08-23 Mpc, Inc. Control system for exhaust gas fan system
US20170248335A1 (en) * 2013-07-22 2017-08-31 Ecogate, Inc. Industrial on-demand exhaust ventilation system with closed-loop regulation of duct air velocities

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7112131B2 (en) * 2003-05-13 2006-09-26 American Power Conversion Corporation Rack enclosure
CN201451186U (zh) * 2009-07-09 2010-05-12 嘉兴市瑞邦机械工程有限公司 烟熏炉风循环系统的增压腔和增压腔底板
JP5541889B2 (ja) * 2009-08-14 2014-07-09 ダイダン株式会社 ダクト収容ボックス
KR20120068639A (ko) * 2010-12-17 2012-06-27 웅진코웨이주식회사 기화식 가습기 및 그 제어방법
US8941256B1 (en) * 2012-10-01 2015-01-27 Amazon Technologies, Inc. Energy reclamation from air-moving systems
US9657958B2 (en) * 2013-07-22 2017-05-23 Ecogate, Inc. Industrial on-demand exhaust ventilation system with closed-loop regulation of duct air velocities
CN105020782B (zh) * 2015-06-24 2018-06-26 郑成勋 空气净化方法及空气净化器

Patent Citations (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US669547A (en) * 1900-08-02 1901-03-12 Jacob William Patersson Life-saving device.
US2609183A (en) * 1948-09-02 1952-09-02 Honeywell Regulator Co Control apparatus
US2793812A (en) * 1952-12-22 1957-05-28 Westinghouse Electric Corp Air conditioning apparatus
US3563306A (en) * 1969-09-15 1971-02-16 Gene W Osheroff Apparatus for air-conditioning systems
US3766906A (en) * 1972-02-07 1973-10-23 Jenn Air Corp Dining arrangement
US4019566A (en) * 1974-11-29 1977-04-26 Carrier Corporation Air conditioning system
US4008756A (en) * 1975-12-17 1977-02-22 Armer Construction Company Apparatus for air conditioning employing variable terminal box
US4203485A (en) * 1976-12-17 1980-05-20 Aronoff Melvin S Multizone air terminal
US4160407A (en) * 1977-11-18 1979-07-10 Bell Telephone Laboratories, Incorporated Ventilating system
US4437608A (en) * 1982-05-17 1984-03-20 Smith Robert B Variable air volume building ventilation system
US4495986A (en) * 1982-06-21 1985-01-29 Carrier Corporation Method of operating a variable volume multizone air conditioning unit
US4531573A (en) * 1982-06-21 1985-07-30 Carrier Corporation Variable volume multizone unit
US4890666A (en) * 1983-09-02 1990-01-02 Carrier Corporation Method for controlling an air distribution system using ΔT
US4732318A (en) * 1986-01-17 1988-03-22 Osheroff Gene W Velocity controlled forced air temperature control system
US4795088A (en) * 1987-06-11 1989-01-03 Mitsubishi Denki Kabushiki Kaisha Air conditioning system
US5205783A (en) * 1991-08-22 1993-04-27 Accu*Aire Systems, Inc. Air flow control equipment in chemical laboratory buildings
US5312297A (en) * 1991-08-22 1994-05-17 Accu*Aire Systems, Inc. Air flow control equipment in chemical laboratory buildings
US5439414A (en) * 1993-07-26 1995-08-08 Landis & Gyr Powers, Inc. Networked fume hood monitoring system
US6186744B1 (en) * 1996-10-12 2001-02-13 Synetics Solutions Inc. Volumetric airflow indicator and control device
US6071188A (en) * 1997-04-30 2000-06-06 Bristol-Myers Squibb Company Damper and exhaust system that maintains constant air discharge velocity
US5931227A (en) * 1997-11-24 1999-08-03 Graco Mechanical, Inc. Conversion of constant volume heating/air conditioning systems
US6669547B2 (en) * 2001-08-28 2003-12-30 Board Of Regents Of University Of Nebraska Multi-stack exhaust system
US20030104778A1 (en) * 2001-08-28 2003-06-05 Mingsheng Liu Multi-stack exhaust system
US20060117769A1 (en) * 2004-12-07 2006-06-08 American Standard International Inc. Ventilation controller
US7726582B2 (en) * 2005-01-18 2010-06-01 Federspiel Corporation Method and apparatus for converting constant-volume supply fans to variable flow operation
US20070202795A1 (en) * 2006-02-24 2007-08-30 Greenheck Fan Corporation Induced flow fan with outlet flow measurement
US9423128B2 (en) * 2008-01-18 2016-08-23 Mpc, Inc. Control system for exhaust gas fan system
US20130096722A1 (en) * 2008-08-29 2013-04-18 Trane International Inc. Return fan control system and method
US8326464B2 (en) * 2008-08-29 2012-12-04 Trane International Inc. Return fan control system and method
US20140131459A1 (en) * 2009-05-27 2014-05-15 Direct Success, Llc Remote control system for controlling operation of a fan assembly
US20100301123A1 (en) * 2009-05-27 2010-12-02 Bruce Dorendorf Air Quality Control System
US20170067239A1 (en) * 2009-05-27 2017-03-09 Direct Success, Llc Remote control system for controlling operation of a fan assembly
US8640970B2 (en) * 2009-05-27 2014-02-04 Direct Success, Llc Air quality control system
US9506665B2 (en) * 2009-05-27 2016-11-29 Direct Success, Llc Remote control system for controlling operation of a fan assembly
US20120322358A1 (en) * 2011-06-14 2012-12-20 Wendorski Ronald L Variable-volume exhaust system
US20150011153A1 (en) * 2012-02-10 2015-01-08 Josef Oswald Ventilation device for clean room applications
US20140127987A1 (en) * 2012-11-02 2014-05-08 Flextronics Ap, Llc Energy saving-exhaust control and auto shut off system
US9605860B2 (en) * 2012-11-02 2017-03-28 Flextronics Ap, Llc Energy saving-exhaust control and auto shut off system
US20170248335A1 (en) * 2013-07-22 2017-08-31 Ecogate, Inc. Industrial on-demand exhaust ventilation system with closed-loop regulation of duct air velocities
US9121620B2 (en) * 2013-10-31 2015-09-01 Robert M. Rohde Energy efficient HVAC system
US20150323213A1 (en) * 2013-10-31 2015-11-12 Robert M. Rohde Energy efficient hvac system
US20150114596A1 (en) * 2013-10-31 2015-04-30 Robert M. Rohde Energy efficient hvac system
US9612024B2 (en) * 2013-10-31 2017-04-04 Robert M. Rohde Energy efficient HVAC system
US20150211749A1 (en) * 2014-01-28 2015-07-30 Russell Robison Cooking exhaust hood ventilation system and related methods

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180235106A1 (en) * 2017-02-16 2018-08-16 Dell Products, Lp System and Method for Injecting Cooling Air into Servers in a Server Rack
US10939587B2 (en) * 2017-02-16 2021-03-02 Dell Products, L.P. System and method for injecting cooling air into servers in a server rack

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EP3513129A4 (en) 2020-05-27
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EP3513129A1 (en) 2019-07-24

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