US2664916A - Hydraulic elevator descent control valve - Google Patents

Hydraulic elevator descent control valve Download PDF

Info

Publication number
US2664916A
US2664916A US242689A US24268951A US2664916A US 2664916 A US2664916 A US 2664916A US 242689 A US242689 A US 242689A US 24268951 A US24268951 A US 24268951A US 2664916 A US2664916 A US 2664916A
Authority
US
United States
Prior art keywords
valve
cylinder
outlet
inlet
valve cylinder
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
US242689A
Inventor
Alvin M Conley
Original Assignee
Alvin M Conley
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 Alvin M Conley filed Critical Alvin M Conley
Priority to US242689A priority Critical patent/US2664916A/en
Application granted granted Critical
Publication of US2664916A publication Critical patent/US2664916A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston

Description

Jan. 5, 1954 A. M. CONLEY v HYDRAULIC ELEVATOR DESCENT CONTROL VALVE Filed Aug. 20, 1951 dNVENTOR. 4/. w/v M o/wm flow 66 x By ATTORNEYS.

Patented Jan. 5, 1954 OFFICE HYDRAULIC ELEVATOR DESCENT' CONTROL VALVE Alvin M.. Conley, Los Angeles, Calif.

Application August 20, 1951', Serial No. 242,689

6. Claims. 1. invention relates to hydraulic elevator descent. control valves, that is, to solenoid control valves designed to regulate the downtravel of hydraulic elevators.

Included. in the objects of: my invention are:

First, to provide a control valve of this class wherein the rate at which the valve opens and closes may be readily adjusted and whereby when the valve is incorporated in a hydraulic elevator control system, the starting and stopping periods during descent of the elevator may be so adjusted as to: avoid. undue acceleration or deceleration, yet p rmitting an. adequate top speed of descent.

Second, to provide an elevator descent control valve wherein a relatively small, simple solenoid armature..- controls.v a bypass port to; effect op nin and closing of the main flow line..

Third. to provide an elevator-descent control valve which. is not appreciably afiectedv by the change in load carried by the elevator.

Fourth, to provide; an. elevator descent control valve which lends itself to control systems: where- 'in a large and a small capacity control valve may scent without altering the starting or .stopping characteristics of the valve and eliminate ing entirely a separate valve for the purpose;v

With the above. and other objects in view as may appear hereinafter, reference is directed to the. accompanying drawing in which:

Iiigure. 1 is a longitudinal: sectional view of my hydraulic. elevator descent control valve taken through l-l of Figure 2 and showingthe solenoid unit. in place. I

' Figure. 2 is a sectional view thereof through 2'-.--2 of Figure. 1 with the solenoidunit omitted.

Figure 3' is a fragmentary sectional view through 3-4 of Figure. 1 showing the. throttle valve for controlling the opening and closing characteristics of the valve.

Figure 4' is a diagrammatical view illustratin the manner in which my valve. may be. incorporated in an elevator control system.

My control valve includes a valve i. The

iii)

2: valve body is provided with a lateral opening which receives an outlet fitting 2 having an outlet port 3- therein. Formed at the valve body in coaxial relation with the outlet port is a valve cylinder 4. A chamber 5 partially surrounds the valve cylinder and includes a portion interposed between the outlet port 3' and the cylinder 4. The chamber 5 communicates with an inlet port 6 which, in a construction shown, extends downwardly, but may, for convenience, be otherwise located.

The outlet port 3 is provided with a valve seat 1 facing toward the valve cylinder 4. The area of the valveseat 1 is smaller than the area of the valve cylinder. The valve cylinder receives a valve plunger 8 and a sealed ring 9- for sliding fit in the valve cylinder. The valve plunger is provided with a valve seat II] which engages the valve seat I. The valve seat; [0 may be held in place by a. pintle sleeve H" which fits slideably in the outlet post 3'. The pintle sleeve is notched in such a manner as to form, with the outlet, orifices which gradually increase in efi'ective area as the valve is open.

A spring i2 extends between the plunger 8 and the inner end of the cylinder 4. The spring is preferably just sufficient to overcome the friction of the valve plunger and hold the valve seats 1 and H! in mutual engagement. The wait of the valve body I I at the inner end of the valve cylinder" 4" is provided with an externally accessible stop screw [3 which may be adjustedto regulate the maximum open position of the valve plunger. The stop screw may be provided with a seal ring ML The. upper end of the valve body is provided with a screw threaded cavity i5 which receives sealed guide socket member I 6 A solenoid H surrounds the. guide member and an armature I8 is sl'i'dabl-y mounted in the guide member. The armature is provided with as depending valve tip ill The valve tip is of the armature engages valve seat member 20 provided: at. the bottom of the cavity $15.. I

A, passage 21. communicates between the underside of the valve seat member 26 andtheoutport 3,. beyond the pintlesleeve H, the passage extending. from the valve body i into the -eutlet. fitting; 2 and intersecting a radial passage therein. A bypass. 2.! extends: between the radial passage 22 and the cavity [5 above the valve seat; member 2a. The radial passage 22'- is provided between passages 21 and 23 with a valve seat controlled by an. externally accessible, manually operated; needle valve 2.4. As shown in Figure 3, the cavity I communicates by a bypass passage 25 with the chamber 5 and, therefore, with the inlet port 6. This passage is preferably provided with a constriction 26. The cavity l5 also communicates with the valve cylinder 4 through a bleeder passage 21. The bleeder passage 21 is intersected by a bore which receives a cylindrical throttle valve 28 having a transverse port 29.

My hydraulic elevator descent control valve is adapted to be installed in an elevator system such as shown diagrammatically in Figure 4. In such a system, a pump P delivers liquid, either water or oil, from a surge tank T to an elevator ram R to eflect ascent of an elevator. If the pump be a positive displacement type, a momentary acting bypass valve V is provided to ease starting loads. This valve is the subject of a separate invention.

Two of my descent control valves may be em- :ployed. A main valve A of a relatively large capacity is connected across the pump P with its inlet communicating with the ram R and its outlet side communicating with the surge tank T. A secondary valve B of smaller capacity is similarly connected between the ram and the surge tank. Except for their capacities, valves A and B are identical in their construction. They may be electrically connected by means (not shown) to the elevator control system so that the main valve A or both valves may operate as the elevator approaches a floor. Then as the elevator moves closer to floor level, the main valve may close so that the auxiliary valve may inch the elevator into position.

Either valve operates as follows: When the solenoid is deenergized, the passageway, comprising the passages 2| and 25, between the inlet and outlet sides of the valve, is closed. The bleeder passage or branch passage 2'1 is in communication with the inlet port. Consequently, the valve cylinder 4 is subjected to the high pressure fluid existing at the inlet side of the valve body. Inasmuch as the area of the valve cy1in der is greater than the diiferential area between the outlet port and the valve cylinder, the valve plunger is held in its closed position.

When the solenoid unit is operated, the fluid may bleed from the valve cylinder 4 to the outlet side of the valve, reducing the pressure in the valve cylinder so that the pressure existing in the inlet side of the valve may be applied to the differential area between the outlet port and the valve cylinder to urge the valve toward its open position. It will be noted that the constriction 26 insures the necessary pressure drop even though flow occurs through the bypass from the inlet to the outlet side of the valve.

The rate at which the valve opens is dependent upon the setting of the throttle valve 28. When the solenoid is again deenergized to close the by "pass, the pressure existing in the inlet side of mum descent speed .of the elevator.

It is desirable, particularly during service 01 an elevator system or in the event of power failure, to be able to operate the control valve manually. This is accomplished by the needle valve 24 which, when opened, enables the descent control valve to be manually operated. Normally, the needle valve 24 is in its closed position.

Having fully described my invention, it is to be understood that I do not wish to be limited to the details herein set forth, but my invention is of the full scope of the appended claims.

I claim:

1. A valve for controlling the descent of hydraulic elevators, comprising: a valve body with said outlet, an inlet communicating between said valve cylinder and said outlet, a bypass communicating between said inlet and outlet and having a branch communicating with said valve cylinder; remotely actuated valve means controlling said bypass to bleed fluid simultaneously from said inlet and said valve cylinder; a throttle valve in said valve cylinder branch 01! said bypass to regulate flow of fluid into and out of said valve cylinder, and a valve plunger slideable in said valve cylinder and adapted to close said outlet.

2. A valve for controlling the descent of hydraulic elevators, comprising: a valve body defining an outlet, a valve cylinder in alignment with said outlet, an inlet communicating between said valve cylinder and said outlet, a bypass communicating between said inlet and outlet and having a branch communicating with said valve cylinder; a valve seat at said outlet confronting said valve cylinder and of lesser area than said valve cylinder; a valve plunger slideable in said valve cylinder and having a face engageable with said valve seat; remotely controlled valve means in said bypass to permit bleeding of fluid from said valve cylinder; and a throttle valve to regulate flow to and from said valve cylinder thereby to predetermine the rate of movement of said valve plunger during both the opening and closing cycles.

3. A valve for controlling the descent of hydraulic elevators, comprising: a valve body defining an outlet, a valve cylinder in alignment with said outlet, an inlet communicating between said valve cylinder and said outlet, a bypass communicating between said inlet and outlet and having a branch communicating with said valve cylinder; a valve seat at said outlet confronting said valve cylinder and of lesser area than said valve cylinder; a valve plunger slideable in said valve cylinder and having a face engageable with said valve seat; a solenoid actuated valve means in saidbypass to permit bleeding of fluid from said valve cylinder; a throttle valve to regulate flow to and from said valve cylinder thereby to predetermine the rate of movement of said valve "plunger; and a manual valve in parallel with said solenoid actuated valve to permit manual control of said valve.

4. A valve for controlling the descent of hydraulic elevators, comprising: a valve body defining an outlet, a valve cylinder in alignment with said outlet, an inlet communicating between said valve cylinder and said outlet, a bypass communicating between said inlet and outlet and having a branch communicating with said valve cylinder; a valve seat at said outlet confronting said valve cylinder and of lesser area than said valve cylinder; a valve plunger slideable in said valve cylinder and having a face engageablewith said valve seat; remotely controlled valve means in said bypass to permit bleeding of fluid from said valve cylinder; a throttle valve to regulate flow to and from said valve cylinder thereby to predetermine the rate of movement of said valve plunger; and an externally accessible adjustable stop for adjusting the travel of said valve plunger.

5. A control valve, involving: a valve body structure defining a right angularly related inlet and outlet, a valve cylinder coaxial with said outlet, the area of said outlet being less than the area of said cylinder, a chamber between said outlet and valve cylinder communicating with said inlet; said body structure also defining a bypass between said inlet and outlet including a branch communicating with said valve cylinder; remotely controlled valve means for said bypass to divert fluid into or bleed fluid from said valve cylinder; a throttle valve to regulate the rate of flow into and out of said valve cylinder; a valve plunger slideable in said valve cylinder and arranged to close said outlet; and an adjustable stop means protruding from said valve cylinder for regulating the maximum open position of said valve plunger.

6. A control valve, involving: a valve body structure defining a right angularly related inlet and outlet, a valve cylinder coaxial with said outlet, the area of said outlet being less than the area of said cylinder, a chamber between said outlet and valve cylinder communicating with said inlet; said body structure also defining a bypass between said inlet and outlet including a branch communicating with said valve cylinder; a solenoid actuated valve means for said bypass to divert fluid into or bleed from said valve cylinder; a throttle valve to regulate the rate of flow into and out of said valve cylinder; a valve plunger slideable in said valve cylinder and arranged to close said outlet; an adjustable stop means protruding from said valve cylinder for regulating the maximum open position of said valve plunger, and a manually operated valve in parallel with said solenoid valve for manually controlling operation of said valve cylinder, irrespective of said remotely controlled valve means.

ALVIN M. CONLEY,

References Cited in the file Of this patent UNITED STATES PATENTS Number Name Date 687,247 Marrder Nov. 26, 1901 1,114,431 Bopp Oct. 24, 1914 1,320,465 Grabler Nov. 4, 1919 2,172,855 Siegert Sept. 12, 1939 2,240,079 Roth Apr. 29, 1941 2,262,823 Stearns Nov. 18, 1941 2,310,516 Clark Feb. 9, 1943 2,363,063 Hildebrecht Nov. 21, 1944 FOREIGN PATENTS Number Country Date 748,407 France July 4, 1933

US242689A 1951-08-20 1951-08-20 Hydraulic elevator descent control valve Expired - Lifetime US2664916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US242689A US2664916A (en) 1951-08-20 1951-08-20 Hydraulic elevator descent control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US242689A US2664916A (en) 1951-08-20 1951-08-20 Hydraulic elevator descent control valve

Publications (1)

Publication Number Publication Date
US2664916A true US2664916A (en) 1954-01-05

Family

ID=22915810

Family Applications (1)

Application Number Title Priority Date Filing Date
US242689A Expired - Lifetime US2664916A (en) 1951-08-20 1951-08-20 Hydraulic elevator descent control valve

Country Status (1)

Country Link
US (1) US2664916A (en)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2926882A (en) * 1956-07-06 1960-03-01 J D Gould Company Hydraulic control valve
US2937846A (en) * 1957-06-10 1960-05-24 Specialties Dev Corp Double vent operated flood valve
US2951340A (en) * 1956-01-03 1960-09-06 Curtiss Wright Corp Gas turbine with control mechanism for turbine cooling air
US3008682A (en) * 1959-07-10 1961-11-14 Sloan Valve Co Flush valves
US3061264A (en) * 1959-05-04 1962-10-30 Paul F Moore Pressure water flusing system
US3083721A (en) * 1959-05-25 1963-04-02 American Radiator & Standard Constant mass flow regulator
US3180355A (en) * 1962-07-16 1965-04-27 Borg Warner Pilot operated relief valve with auxiliary pilot control
US3253615A (en) * 1963-10-16 1966-05-31 Armstrong Machine Works Valve assembly
US3275022A (en) * 1963-01-04 1966-09-27 Keihin Seiki Mfg Valve assembly
US3329392A (en) * 1964-04-24 1967-07-04 White Sales Corp Graham Electric control valve
US3360234A (en) * 1965-02-25 1967-12-26 Powers Regulator Co Valve
US3379406A (en) * 1965-03-24 1968-04-23 Hays Mfg Co Diaphragm valve with water hammer preventer
US3439895A (en) * 1967-05-01 1969-04-22 Clemar Mfg Corp Pilot operated valve
US3520510A (en) * 1969-05-08 1970-07-14 Emco Wheaton Flow control valve
US3643682A (en) * 1970-10-26 1972-02-22 Sperry Rand Corp Power transmission
US3707166A (en) * 1971-05-12 1972-12-26 Elevator Equip Unit valve for hydraulic elevator control
US3980002A (en) * 1972-11-08 1976-09-14 Control Concepts, Inc. Two stage solenoid actuated valve, system, and method of actuation
US4291544A (en) * 1977-10-13 1981-09-29 Danfoss A/S Control apparatus for the low pressure evaporator of a refrigeration plant
US4809746A (en) * 1985-08-10 1989-03-07 Mannesmann Rexroth Gmbh Proportional throttle valve
US4816083A (en) * 1985-04-29 1989-03-28 Wen Bangyan Multifunctional electromagnetic valve assembly
US5042775A (en) * 1988-05-27 1991-08-27 Koppens Automatic Fabrieken B. V. Stop valve and control/mixing system for fluids
US5131427A (en) * 1991-08-06 1992-07-21 Flint Hydraulic, Inc. Pilot operated relief valve
US5636652A (en) * 1995-02-28 1997-06-10 Otis Elevator Company Valve for a hydraulic elevator
US5853160A (en) * 1997-12-23 1998-12-29 Martin Engineering Company Aerator valve assembly
US20050151100A1 (en) * 2004-01-14 2005-07-14 Christian Dalmasso Positive pressure actuated aerator valve assembly
US20110192471A1 (en) * 2008-10-20 2011-08-11 Thomas Kirst Variable flow rate valve system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US687247A (en) * 1898-03-22 1901-11-26 Signal And Control Company Valve.
US1114431A (en) * 1912-10-26 1914-10-20 Clinton L Bopp Pneumatically-timed air-valve.
US1320465A (en) * 1919-11-04 Peteb gbableb
FR748407A (en) * 1932-04-26 1933-07-04 electromagnetic valve actuator
US2172855A (en) * 1937-01-18 1939-09-12 Siegert Walter High pressure valve
US2240079A (en) * 1939-03-14 1941-04-29 Adolf N Roth Electrically controlled gas valve
US2262823A (en) * 1938-01-12 1941-11-18 Honeywell Regulator Co Gas valve
US2310516A (en) * 1940-02-10 1943-02-09 Square D Co Valve
US2363063A (en) * 1941-09-02 1944-11-21 Milwaukee Gas Specialty Co Safety shutoff device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1320465A (en) * 1919-11-04 Peteb gbableb
US687247A (en) * 1898-03-22 1901-11-26 Signal And Control Company Valve.
US1114431A (en) * 1912-10-26 1914-10-20 Clinton L Bopp Pneumatically-timed air-valve.
FR748407A (en) * 1932-04-26 1933-07-04 electromagnetic valve actuator
US2172855A (en) * 1937-01-18 1939-09-12 Siegert Walter High pressure valve
US2262823A (en) * 1938-01-12 1941-11-18 Honeywell Regulator Co Gas valve
US2240079A (en) * 1939-03-14 1941-04-29 Adolf N Roth Electrically controlled gas valve
US2310516A (en) * 1940-02-10 1943-02-09 Square D Co Valve
US2363063A (en) * 1941-09-02 1944-11-21 Milwaukee Gas Specialty Co Safety shutoff device

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2951340A (en) * 1956-01-03 1960-09-06 Curtiss Wright Corp Gas turbine with control mechanism for turbine cooling air
US2926882A (en) * 1956-07-06 1960-03-01 J D Gould Company Hydraulic control valve
US2937846A (en) * 1957-06-10 1960-05-24 Specialties Dev Corp Double vent operated flood valve
US3061264A (en) * 1959-05-04 1962-10-30 Paul F Moore Pressure water flusing system
US3083721A (en) * 1959-05-25 1963-04-02 American Radiator & Standard Constant mass flow regulator
US3008682A (en) * 1959-07-10 1961-11-14 Sloan Valve Co Flush valves
US3180355A (en) * 1962-07-16 1965-04-27 Borg Warner Pilot operated relief valve with auxiliary pilot control
US3275022A (en) * 1963-01-04 1966-09-27 Keihin Seiki Mfg Valve assembly
US3253615A (en) * 1963-10-16 1966-05-31 Armstrong Machine Works Valve assembly
US3329392A (en) * 1964-04-24 1967-07-04 White Sales Corp Graham Electric control valve
US3360234A (en) * 1965-02-25 1967-12-26 Powers Regulator Co Valve
US3379406A (en) * 1965-03-24 1968-04-23 Hays Mfg Co Diaphragm valve with water hammer preventer
US3439895A (en) * 1967-05-01 1969-04-22 Clemar Mfg Corp Pilot operated valve
US3520510A (en) * 1969-05-08 1970-07-14 Emco Wheaton Flow control valve
US3643682A (en) * 1970-10-26 1972-02-22 Sperry Rand Corp Power transmission
US3707166A (en) * 1971-05-12 1972-12-26 Elevator Equip Unit valve for hydraulic elevator control
US3980002A (en) * 1972-11-08 1976-09-14 Control Concepts, Inc. Two stage solenoid actuated valve, system, and method of actuation
US4291544A (en) * 1977-10-13 1981-09-29 Danfoss A/S Control apparatus for the low pressure evaporator of a refrigeration plant
US4816083A (en) * 1985-04-29 1989-03-28 Wen Bangyan Multifunctional electromagnetic valve assembly
US4809746A (en) * 1985-08-10 1989-03-07 Mannesmann Rexroth Gmbh Proportional throttle valve
US5042775A (en) * 1988-05-27 1991-08-27 Koppens Automatic Fabrieken B. V. Stop valve and control/mixing system for fluids
US5131427A (en) * 1991-08-06 1992-07-21 Flint Hydraulic, Inc. Pilot operated relief valve
US5636652A (en) * 1995-02-28 1997-06-10 Otis Elevator Company Valve for a hydraulic elevator
US5853160A (en) * 1997-12-23 1998-12-29 Martin Engineering Company Aerator valve assembly
US20050151100A1 (en) * 2004-01-14 2005-07-14 Christian Dalmasso Positive pressure actuated aerator valve assembly
US7273205B2 (en) 2004-01-14 2007-09-25 Martin Engineering Company Positive pressure actuated aerator valve assembly
US20110192471A1 (en) * 2008-10-20 2011-08-11 Thomas Kirst Variable flow rate valve system
US8783645B2 (en) * 2008-10-20 2014-07-22 Buerkert Werke Gmbh Variable flow rate valve system

Similar Documents

Publication Publication Date Title
US10378671B2 (en) Double action direction fluid flow valve
US2417994A (en) Valve
EP0241880B1 (en) Pilot valve with pressure relieving pin and main valve controlling the connection between inlet and outlet
US2985490A (en) Fluid pressure valve
US8256739B2 (en) Poppet valve operated by an electrohydraulic poppet pilot valve
US4699351A (en) Pressure responsive, pilot actuated, modulating valve
US3400734A (en) Automatically responsive shutoff valve
US2588520A (en) Hydraulically operated check valve mechanism
US4621695A (en) Balance line hydraulically operated well safety valve
US5878647A (en) Pilot solenoid control valve and hydraulic control system using same
US7984890B2 (en) Pilot operated valve with fast closing poppet
US3722543A (en) Pressure compensated control valve
JP3710836B2 (en) Feedback poppet valve
US4058287A (en) Pilot-operated valve having constant closing rate
US3488953A (en) Control apparatus for fluid operated vehicles
US5217043A (en) Control valve
US3957244A (en) Valve
US3888280A (en) Bi-directional pressure balanced valve
US3744517A (en) Load responsive fluid control valves
US4244275A (en) Counterbalance valve
US1925301A (en) Valve
US4727792A (en) Hydraulic holding valve
US2775982A (en) Differential-piston valve and dual pilot-valve control therefor
US3155365A (en) Pressure medium controlled liquid valve for automatic flow limitation devices
US3795255A (en) Load control and holding valve