GB709617A - Improvements in and relating to pressure reducing devices - Google Patents

Improvements in and relating to pressure reducing devices

Info

Publication number
GB709617A
GB709617A GB26096/52A GB2609652A GB709617A GB 709617 A GB709617 A GB 709617A GB 26096/52 A GB26096/52 A GB 26096/52A GB 2609652 A GB2609652 A GB 2609652A GB 709617 A GB709617 A GB 709617A
Authority
GB
United Kingdom
Prior art keywords
plunger
pin
pressure
valve
oct
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
Application number
GB26096/52A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB709617A publication Critical patent/GB709617A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/103—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger the sensing element placed between the inlet and outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

709,617. Valves. GENERAL ELECTRIC CO. Oct. 17, 1952 [Oct. 19, 1951], No. 26096/52. Class 135 A pressure reducing valve for maintaining a desired pressure differential between the high and low temperature evaporators of a refrigerating system, comprises a casing 8 having a partition member 11 having an axial bore 13 loosely mounting a valve pin 16 to permit equalization of pressure on opposite sides of the member. The member has transverse slots 14, 22 intersecting the bore, and a recess 12 for a weighted plunger 17 engagable with lost motion with the pin 16. When the pressure in the high temperature evaporator connected at 9 exceeds that in the low temperature evaporator connected at 10 sufficiently to overcome the weight of the plunger, the pin 16 rises. Refrigerant then flows through the slot 14 to act on the upper side of the plunger to resist its upward movement and so delay the full opening of the valve. Downward movement of the plunger is delayed by the slow leakage of refrigerant trapped in the recess 12 past the leaky pin 16 and through the slot 22.
GB26096/52A 1951-10-19 1952-10-17 Improvements in and relating to pressure reducing devices Expired GB709617A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US709617XA 1951-10-19 1951-10-19

Publications (1)

Publication Number Publication Date
GB709617A true GB709617A (en) 1954-05-26

Family

ID=22098407

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26096/52A Expired GB709617A (en) 1951-10-19 1952-10-17 Improvements in and relating to pressure reducing devices

Country Status (1)

Country Link
GB (1) GB709617A (en)

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