US3828152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator for centralized refrigerating
Assignee: Constructions Isothermiques Bontami SARL
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Filing: 1972-04-17
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Granted: 1974-08-06
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Expires: 1992-04-17
Abstract
Abstract A pressure or flow regulator for food refrigeration systems and installations for distributing fluid under pressure. The regulator is particularly intended for centralized refrigeration systems having a group of compressors mounted in parallel and delivering fluid refrigerant to refrigerated cabinets which are periodically defrosted. The regulator has two interconnected bellows in an enclosure filled with a fluid having a low coefficient of expansion. One of the bellows is deformable by changes in pressure at the low pressure side of the compressors, and resulting deformations in this bellows are transmitted by the fluid in the enclosure to the other bellows, which actuates micro-contacts controlling the starting or stopping of the compressors.
Inventors
- 👤 P Charmeil
- 👤 M Debieuvre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:27
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/10; F25B49/00; F25B49/02; F25B49/022; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2006; G05D16/2066; G05D16/2073; F25B2400/00; F25B2400/07; F25B2400/075; F25B2400/22; F25B2600/00; F25B2600/02; F25B2600/025; F25B2600/0251; F25B5/00; F25B5/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
143 words
In a regulator for use in centralized refrigerating equipment consisting essentially of a plurality of compressors arranged in parallel for supplying fluid refrigernat through conduits to a plurality of refrigerated cabinets and receiving said fluid refrigerant from said cabinets through an intake conduit, the improvement in said regulator consisting essentially of a first bellows in fluid communication with said intake conduit and deformable by pressure changes in said intake conduit and a second bellows in fluid communication with said first bellows, having a greater stroke than said first bellows for a given pressure change, said second bellows being deformable under the influence of deformation in said first bellows, a plurality of switches including micro-contacts connected to control the starting up or stopping of respective ones of saiD compressors, said second bellows including means to actuate said microcontacts sequentially in response to said deformation.
Claim 2
Dependent Claim
143 words
In a regulator for use in centralized refrigerating equipment consisting essentially of a plurality of compressors arranged in parallel for supplying fluid refrigernat through conduits to a plurality of refrigerated cabinets and receiving said fluid refrigerant from said cabinets through an intake conduit, the improvement in said regulator consisting essentially of a first bellows in fluid communication with said intake conduit and deformable by pressure changes in said intake conduit and a second bellows in fluid communication with said first bellows, having a greater stroke than said first bellows for a given pressure change, said second bellows being deformable under the influence of deformation in said first bellows, a plurality of switches including micro-contacts connected to control the starting up or stopping of respective ones of saiD compressors, said second bellows including means to actuate said microcontacts sequentially in response to said deformation.
Claim 3
Dependent Claim
75 words
A regulator according to claim 1, wherein said first and second bellows are accommodated in a fluid-tight enclosure, having cylindrical walls whose longitudinal axis is vertically oriented and having upper and lower cover-plates, said first bellows being secured above said lower cover-plate, and said second bellows being secured beneath said upper cover-plate, the space between said walls of the enclosure and said bellows being completely filled with a fluid having a low coefficient of expansion.
Claim 4
Dependent Claim
51 words
A regulator according to claim 2, wherein said second bellows has a base supporting a rod axially slidable through said upper cover-plate with negligible friction, which rod supports a counterweight outside said enclosure, said counterweight having an upper horizontal face carrying a plurality of rods for closing and opening said micro-contacts.
Claim 5
Dependent Claim
53 words
A regulator according to claim 3, wherein said micro-contacts are aligned horizontally on an element carried above said enclosure said rods each having a tapered tip, the height of each tip above said counter-weight being adjustable whereby each micro-contact is individually actuable in dependence upon a characteristic predetermined deformation of said second bellows.
Claim 6
Dependent Claim
29 words
A regulator according to claim 4, wherein said second bellows has a stroke approximately ten times greater than the stroke of said first bellows for any given pressure change.
Claim 7
Dependent Claim
16 words
A regulator according to claim 2, wherein said first and second bellows are made of brass.
Claim 8
Dependent Claim
18 words
A regulator according to claim 3, wherein said counterweight has provision for additional weights to be fitted thereto.
Claim 9
Dependent Claim
19 words
A regulator according to claim 1, wherein said first bellows is fitted with an interior stop limiting collapse thereof.
Claim 10
Dependent Claim
17 words
A regulator according to claim 2, wherein said first and second bellows are made of stainless steel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |