GB1229407A – – Google Patents
GB1229407A – – Google Patents
Info
Publication number
GB1229407A
GB1229407A
GB1898667A
GB1229407DA
GB1229407A
GB 1229407 A
GB1229407 A
GB 1229407A
GB 1898667 A
GB1898667 A
GB 1898667A
GB 1229407D A
GB1229407D A
GB 1229407DA
GB 1229407 A
GB1229407 A
GB 1229407A
Authority
GB
United Kingdom
Prior art keywords
expansion valve
suction line
bracket
battery
supply
Prior art date
1967-04-25
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
GB1898667A
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.)
1967-04-25
Filing date
1967-04-25
Publication date
1971-04-21
1967-04-25
Application filed
filed
Critical
1971-04-21
Publication of GB1229407A
publication
Critical
patent/GB1229407A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
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
F25B41/31—Expansion valves
F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators
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
F25B41/31—Expansion valves
F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators
F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators by solenoids
F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezo-electric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
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
F25B2500/00—Problems to be solved
F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
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
F25B2600/00—Control issues
F25B2600/25—Control of valves
F25B2600/2513—Expansion valves
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
Abstract
1,229,407. Refrigerating. HALL-THERMOTANK INTERNATIONAL Ltd. 25 July, 1968 [25 April, 1967], No. 18986/67. Heading F4H. The expansion valve of a vapour-compression refrigeration system is controlled in dependence on the difference between the temperature dependent electrical outputs of two devices located at spaced points on the low pressure side of the system. The devices may be thermocouples, resistance thermometers or thermistors and their outputs are fed to a differential D.C. amplifier which controls the solenoid of the expansion valve via a voltage sensitive threshold circuit and a relay. The electrical circuit includes an override to maintain the expansion valve open for a predetermined period after initial start-up. The devices may be located in the following positions: (i) One in or on the suction line, the other between the expansion valve and evaporator. (ii) One in or on the suction line, the other in or on the evaporator. (iii) Both in or on the suction line, adjacent the compressor and evaporator outlet respectively. (iv) Both in or on the suction line, the downstream device being supplied with a small quantity of liquid refrigerant metered from the high pressure side of the system. 1,229,419. Electric battery lamps. BARDIC SYSTEMS Ltd. 2 Oct., 1968 [5 Oct., 1967], No. 45601/67. Heading F4R. [Also in Division H2] A portable handlamp 20, including a battery 34, is normally positioned on a fixed bracket 10, and is connected through a plug 24 with an A.C. supply which trickle-charges the battery through a transformer 35. The transformer also functions as a relay controlling an armature 40, and when energized from the supply holds contacts 41, 42 apart so that the lamp is inoperative. A bolt 45 is also held so that it protrudes through a hole 52 in the bottom 11 of the bracket, locking the lamp against removal from the bracket. If the supply fails, the transformer is de-energized, and the armature 40 rises to engage the contacts 41, 42, thereby illuminating the bulb 30 from the battery. At the same time, the bolt 45 disengages so that the lamp may be removed from the bracket. A push-button 50 may be provided for testing purposes while the supply is maintained.
GB1898667A
1967-04-25
1967-04-25
Expired
GB1229407A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB1898667
1967-04-25
Publications (1)
Publication Number
Publication Date
GB1229407A
true
GB1229407A
(en)
1971-04-21
Family
ID=10121824
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1898667A
Expired
GB1229407A
(en)
1967-04-25
1967-04-25
Country Status (1)
Country
Link
GB
(1)
GB1229407A
(en)
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0171240A2
(en)
*
1984-08-08
1986-02-12
Richard H. Alsenz
Closed vapor cycle refrigerator
FR2598789A1
(en)
*
1986-05-13
1987-11-20
Electricite De France
Programmable thermostatic pressure reducer
US5392612A
(en)
*
1984-08-08
1995-02-28
Richard H. Alsenz
Refrigeration system having a self adjusting control range
US5402652A
(en)
*
1984-08-08
1995-04-04
Alsenz; Richard H.
Apparatus for monitoring solenoid expansion valve flow rates
1967
1967-04-25
GB
GB1898667A
patent/GB1229407A/en
not_active
Expired
Cited By (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0171240A2
(en)
*
1984-08-08
1986-02-12
Richard H. Alsenz
Closed vapor cycle refrigerator
EP0171240A3
(en)
*
1984-08-08
1987-05-20
Richard H. Alsenz
Pulse controlled solenoid valve
US5392612A
(en)
*
1984-08-08
1995-02-28
Richard H. Alsenz
Refrigeration system having a self adjusting control range
US5402652A
(en)
*
1984-08-08
1995-04-04
Alsenz; Richard H.
Apparatus for monitoring solenoid expansion valve flow rates
FR2598789A1
(en)
*
1986-05-13
1987-11-20
Electricite De France
Programmable thermostatic pressure reducer
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Legal Events
Date
Code
Title
Description
1971-09-02
PS
Patent sealed [section 19, patents act 1949]
1977-08-24
PLE
Entries relating assignments, transmissions, licences in the register of patents
1979-02-28
PCNP
Patent ceased through non-payment of renewal fee
