US2888948A - Static pressure regulator - Google Patents

Static pressure regulator Download PDF

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Publication number
US2888948A
US2888948A US409978A US40997854A US2888948A US 2888948 A US2888948 A US 2888948A US 409978 A US409978 A US 409978A US 40997854 A US40997854 A US 40997854A US 2888948 A US2888948 A US 2888948A
Authority
US
United States
Prior art keywords
pressure
axle
lever
membrane
housing
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.)
Expired - Lifetime
Application number
US409978A
Other languages
English (en)
Inventor
Pellmyr Bengt
Wallin Sven Werner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Svenska Flaktfabriken AB
Original Assignee
Svenska Flaktfabriken AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Svenska Flaktfabriken AB filed Critical Svenska Flaktfabriken AB
Application granted granted Critical
Publication of US2888948A publication Critical patent/US2888948A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0173—Control of flow without auxiliary power using pivoting sensing element acting as a valve mounted within the flow-path
    • 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
    • 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
    • F24F11/75—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 for maintaining constant air flow rate or air velocity
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • Y10T137/7788—Pressures across fixed choke
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7805—Through external pipe
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7831—With mechanical movement between actuator and valve
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18176—Crank, pitman, lever, and slide

Definitions

  • the present invention relates to a device for maintaining a constant static pressure in a duct or a pipe for a flowing gaseous medium, for instance the distributing pipe in air-conditioning plants.
  • the device consists of a means of throttling arranged in a section of the duct or similar space, the closing and opening movements of said means for the medium passing said space being maintained by a pressure responsive means sensitive to the pressure difference between two points and subject to the influence of a counter-acting torsional moment on the throttling means.
  • the invention is mainly characterized in that the throttling means consists of a bow-shaped damper plate which by means of supporting arms is pivotally journalled on an axle in the geometric centre of the bow and arranged perpendicularly with respect to the direction of flow of the medium, and further by a lever mechanism between the pressure responsive means and the throttling means and also by a counter-weight or a spring being fastened to the axle of the throttling means or the lever mechanism for causing a counter-acting moment of torsion on the axle of the throttling means.
  • the pressure responsive means consists of a membrane to which a mechanical connection acting on the throttling means is fastened, which membrane is surrounded by a casing which is divided by the membrane into two separate spaces each of such spaces being connected to those points of the plant, the pressure difference between which points shall influence the size of the free passage area of the device in such a manner that the size of said area is increased by a reduction of said pressure difference and on the other hand is decreased by a greater pressure diiference.
  • the mechanical connection between the throttling means and the pressure responsive means may consist of a shaft joined to the membrane and movable by the motion of the membrane in two opposite directions, the other end of the shaft being linked to one end of a bar, the far end of which is pivotally supported at one of the walls of the device, and to which bar furthermore a lever acting on the turning axle of the throttling means is linked by a rod arranged substantially parallel to the shaft,
  • Fig. l is a view in front elevation of a device made in accordance with the present invention.
  • Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. l;
  • Fig. 3 is a fragmentary sectional view taken on the line 3-3 of Fig. 2.
  • the walls of the device are designated 3, 5, 7 and 35'. These walls together form a chamber with the openings 1-52 and 18-30 respectively.
  • the chamber is provided with flanges 2, S and rates Patent 9 14, 38 respectively for the fastening of the device, for instance, in apassage of an air-conditioning plant where it is intended continuously to control the static pressure of a flowing gaseous medium. It is intended that the control should be effected by the action of the throttling means, the axle of which is designated 32 and the supporting arms of which are designated 10, 12 joined by means of the detail 11. These arms support a damper plate which in the case illustrated is bow-shaped and is designated 9, 8, 13. Below the chamber is arranged a closed box the parts of which are designated 43, 44.
  • the box forms a casing for a membrane 41 which divides said easing into two different separated spaces.
  • One of these spaces is designated 42 and is, by means of the opening 51 and a corresponding pipe, connected to one of the two points for measuring whilst the other space designated 45, by means of the opening 49 and a corresponding pipe, is connected to the second point for measuring, the intention being that the pressure difference between these two points shall influence the movements of the leading edge of the damper plate upwards to a position shown in full lines at 9 in the drawing, and downwards to the point 53 respectively.
  • the membrane is at its centre reinforced with a disc 46. Between the membrane and the throttling means within the chamber is arranged a mechanical connection.
  • this connection consists of the shaft 24 joined to the membrane disc by means of the nuts 47, 48, the bar 17 and the rod 22', and the lever 26, which lever is fastened to the axle 32 of the throttling means.
  • 36a, 36b designate a pair of small wheels between which the shaft 24 is guided by its movements upwards and downwards respectively.
  • the designations 23, 21, 16, 22a represent the corresponding linking points in the mechanical connection, and 15 is a support for the bar 17.
  • the designation number 27 stands for a counter-weight which, by means of the screw 28, can be moved along the lever 29, so that in each case of use a greater or lesser torsional moment can be obtained.
  • the lever 29 is clamped around the axle by means of clamping means 31, 34, so that the' action of the gravitation force of the counter-weight on the axle 32 can be regulated by different angles of the lever. Similarly there is a clamping nieans 3t 33 for the lever 26.
  • the controlling device consists of a spring 19 for which by stationary use of said. device can be substituted a weight.
  • the counter-acting force caused by the spring or the weight on the bar 17 determines the relationship between the pressure difference and the free area for the passing gaseous medium.
  • the lower part of the spring is fastened to the lug 20b.
  • the upper part 2AM of the spring can be moved to a number of holes 20 on the bar 1'7, and thus the pressure level can be changed. Likewise the pressure level can be adjusted if a weight is substituted for the spring.
  • disc 25 mounted on the axle 32.
  • One of the chamber walls 5 is provided with a window 54 just in front of disc 25.
  • a fixed pointer 55 indicates the position of the throttling means.
  • the purpose of the device is to maintain continuously and automatically a constant static pressure at point B, for instance situated in a distributing duct connected to the rear end of the device. For this purpose the pressure from two separate points of measuring is conducted to the openings 49 and 51 respectively. If the device is used in an air conditioning plant one of the measuring points can, for instance, be situated within an air distributing duct and the other point can be situated in the place of use (i.e. the place to be air-conditioned), for instance,
  • the device can also be used for other purposes while still functioning as a pressure governor.
  • the quantity of passing air can thus be calculated by gauging the pressure difference between the points on different sides of the throttling means of the device, for example the points C and D, and by simultaneously noting the size of the opening 53-52 on the scale of the disc 25. By a simple calculation the air quantity can thus be estimated.
  • a housing connected to said duct having a generally rectangular free passage area for the flow of the gaseous medium therethrough, throttling means for said medium comprising a bowed damper plate in the form of a partial cylindrical shell corresponding in axial length to the length of said free passage area and an arcuate distance corresponding to the width of said free passage area, means mounting said plate for rotation about its cylindrical axis comprising an axle mounted in said housing coaxial with said cylindrical axis and parallel to the length direction of said free passage area and radial arms mounted on said axle and supporting said plate thereon, said plate being rotatable between a first limit position out of the free passage area of said housing and a second limit position intersecting said free passage area, means normally maintaining said damper plate in its first limit position comprising a lever on said axle and a counterweight mounted for longitudinal adjustment on said lever, and automatic pressure-responsive means to actuate said damp
  • a housing connected to said duct having a generally rectangular free passage area for the flow of the gaseous medium therethrough, throttling means for said medium comprising a bowed damper plate in the form of a partial cylindrical shell corresponding in axial length to the length of said free passage area and an arcuate distance corresponding to the width of said free passage area, means mounting said plate for rotation about its cylindrical axis comprising an axle mounted in said housing coaxial with said cylindrical axis and parallel to the length direction of said free passage area and radial arms mounted on said axle and supporting said plate thereon, said 4 plate being rotatable between a first limit position out of the free passage area of said housing and a second limit position intersecting said free passage area, means normally maintaining said damper plate in its first limit position comprising a lever on said axle and a counter-weight mounted for longitudinal adjustment on said lever, and automatic pressure-responsive means to actuate

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Volume Flow (AREA)
  • Air-Flow Control Members (AREA)
  • Measuring Fluid Pressure (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US409978A 1953-02-17 1954-02-12 Static pressure regulator Expired - Lifetime US2888948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2888948X 1953-02-17

Publications (1)

Publication Number Publication Date
US2888948A true US2888948A (en) 1959-06-02

Family

ID=20427688

Family Applications (1)

Application Number Title Priority Date Filing Date
US409978A Expired - Lifetime US2888948A (en) 1953-02-17 1954-02-12 Static pressure regulator

Country Status (5)

Country Link
US (1) US2888948A (fr)
CH (1) CH320059A (fr)
FR (1) FR1097676A (fr)
GB (1) GB740099A (fr)
NL (1) NL88155C (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991937A (en) * 1959-01-20 1961-07-11 Trane Co Air blender
US3139106A (en) * 1960-02-19 1964-06-30 Svenska Flaektfabriken Ab Pressure regulator
US3191615A (en) * 1961-06-09 1965-06-29 Allied Thermal Corp Automatic fluid controller
US3824902A (en) * 1970-04-13 1974-07-23 Siemens Ag Device for producing gas flows
US5509449A (en) * 1995-04-03 1996-04-23 The United States Of America As Represented By The Secretary Of Agriculture Control of fluids
US5582203A (en) * 1988-04-07 1996-12-10 Palmer; David W. System for controlling flow through a process region

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE116748T1 (de) * 1990-03-30 1995-01-15 Koppens Automatic Fabrieken Bv Multivariabler regler mit mindestens vier mechanischen einführungen und system ausgerüstet mit demselben.

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US190442A (en) * 1877-05-08 Improvement in automatic water-pipe pressure cut-offs
US427516A (en) * 1890-05-06 Bocker
US733757A (en) * 1901-08-07 1903-07-14 Vincent P Travers Jr Valve-governing mechanism.
US812626A (en) * 1904-12-13 1906-02-13 William L Wilson Power-transmitting apparatus.
US991641A (en) * 1909-05-12 1911-05-09 Pierre Plantinga Device for controlling fluids.
US1390521A (en) * 1921-02-07 1921-09-13 Leo F Fay Washing-machine
US1490654A (en) * 1920-04-24 1924-04-15 Thomas B Wylie Maximum-demand fluid regulator
US1656184A (en) * 1924-12-20 1928-01-17 Karl A Enz Valve
US1673041A (en) * 1926-10-29 1928-06-12 Builders Iron Foundry Rate of flow controller
US2242667A (en) * 1940-05-22 1941-05-20 Durabilt Steel Locker Co Automatic air control for forced draft firing
US2357341A (en) * 1940-07-10 1944-09-05 Builders Iron Foundry Flow controller

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US190442A (en) * 1877-05-08 Improvement in automatic water-pipe pressure cut-offs
US427516A (en) * 1890-05-06 Bocker
US733757A (en) * 1901-08-07 1903-07-14 Vincent P Travers Jr Valve-governing mechanism.
US812626A (en) * 1904-12-13 1906-02-13 William L Wilson Power-transmitting apparatus.
US991641A (en) * 1909-05-12 1911-05-09 Pierre Plantinga Device for controlling fluids.
US1490654A (en) * 1920-04-24 1924-04-15 Thomas B Wylie Maximum-demand fluid regulator
US1390521A (en) * 1921-02-07 1921-09-13 Leo F Fay Washing-machine
US1656184A (en) * 1924-12-20 1928-01-17 Karl A Enz Valve
US1673041A (en) * 1926-10-29 1928-06-12 Builders Iron Foundry Rate of flow controller
US2242667A (en) * 1940-05-22 1941-05-20 Durabilt Steel Locker Co Automatic air control for forced draft firing
US2357341A (en) * 1940-07-10 1944-09-05 Builders Iron Foundry Flow controller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2991937A (en) * 1959-01-20 1961-07-11 Trane Co Air blender
US3139106A (en) * 1960-02-19 1964-06-30 Svenska Flaektfabriken Ab Pressure regulator
US3191615A (en) * 1961-06-09 1965-06-29 Allied Thermal Corp Automatic fluid controller
US3824902A (en) * 1970-04-13 1974-07-23 Siemens Ag Device for producing gas flows
US5582203A (en) * 1988-04-07 1996-12-10 Palmer; David W. System for controlling flow through a process region
US5509449A (en) * 1995-04-03 1996-04-23 The United States Of America As Represented By The Secretary Of Agriculture Control of fluids

Also Published As

Publication number Publication date
CH320059A (de) 1957-03-15
NL88155C (fr) 1900-01-01
GB740099A (en) 1955-11-09
FR1097676A (fr) 1955-07-08

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