Patent US3827253A successfully refreshed from Google Patents.
US3827253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chiller for ice rink refrigeration systems
Assignee: BURRARD REFRIGERATION Ltd
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Filing: 1973-04-30
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Granted: 1974-08-06
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Expires: 1993-04-30
Abstract
Abstract A chiller consisting of a tubular header for location alongside an ice rink and beneath the ice level. The chiller is divided into three vertically arranged longitudinal chambers having connectors for ice forming pipes which extend beneath the rink. Refrigerant conduction piping extends longitudinally through the chiller and connections are provided for a circulation pump to circulate the chilling medium within the header. The chilling medium being circulated through the header and ice forming pipes is chilled by heat exchange with the refrigerant carried by the refrigerant conduction piping from a refrigeration unit connected thereto.
Inventors
- 👤 G Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:04
CPC Classifications
F; F25; F25C; F25C3/00; F25C3/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
214 words
Ice rink refrigeration apparatus, comprising a closed tubular chiller header for location along substantially the full length of an edge of the rink near the level of the rink, said header being divided into first and second coextending chambers, a plurality of outlet connectors extending laterally from one of said chambers for connection to one end of a plurality of ice forming pipes extending beneath the surface of said rink, a plurality of inlet connectors extending laterally from the other of said chambers for connection to opposite ends of said pipes, means for connecting one end of one of said chambers to an outlet of a circulating pump and an end of the other of said chambers to an inlet of said pump for circulating a chilling medium through said header chambers and said ice forming pipes, and refrigerant conducting piping extending through one of said header chambers for conducting refrigerant from a refrigeration unit through the chilling medium in the latter chamber, whereby when the header is connected into a refrigeration system including ice forming pipes, a circulating pump and a refrigeration unit, the chilling medium circulating through the header chambers and the ice forming pipes is chilled by heat exchange with the refrigerant carried by the refrigerant conducting piping in said chambers.
Claim 2
Dependent Claim
214 words
Ice rink refrigeration apparatus, comprising a closed tubular chiller header for location along substantially the full length of an edge of the rink near the level of the rink, said header being divided into first and second coextending chambers, a plurality of outlet connectors extending laterally from one of said chambers for connection to one end of a plurality of ice forming pipes extending beneath the surface of said rink, a plurality of inlet connectors extending laterally from the other of said chambers for connection to opposite ends of said pipes, means for connecting one end of one of said chambers to an outlet of a circulating pump and an end of the other of said chambers to an inlet of said pump for circulating a chilling medium through said header chambers and said ice forming pipes, and refrigerant conducting piping extending through one of said header chambers for conducting refrigerant from a refrigeration unit through the chilling medium in the latter chamber, whereby when the header is connected into a refrigeration system including ice forming pipes, a circulating pump and a refrigeration unit, the chilling medium circulating through the header chambers and the ice forming pipes is chilled by heat exchange with the refrigerant carried by the refrigerant conducting piping in said chambers.
Claim 3
Dependent Claim
48 words
Apparatus as claimed in claim 1 including a third chamber in the header coextending with said second chamber, and transfer means for connecting an end of said second chamber to the adjacent end of said third chamber, said refrigerant conducting piping extending through the second and third chambers.
Claim 4
Dependent Claim
20 words
Apparatus as claimed in claim 2 wherein said outlet and inlet conductors extend laterally from the first and second chambers.
Claim 5
Dependent Claim
23 words
Apparatus as claimed in claim 1 including baffles in one of said chambers for generating turbulence in the chilling medium during circulation thereof.
Claim 6
Dependent Claim
24 words
Apparatus as claimed in claim 2 including baffles in the second and third chambers for generating turbulence in the chilling medium during circulation thereof.
Claim 7
Dependent Claim
22 words
Apparatus as claimed in claim 1 in which said refrigerant conducting piping comprises a plurality of pipes extending through said second chamber.
Claim 8
Dependent Claim
28 words
Apparatus as claimed in claim 2 in which said refrigerant conducting piping comprises a plurality of pipes extending in series through said second chamber and said third chamber.
Claim 9
Dependent Claim
150 words
Ice rink refrigeration apparatus, comprising a closed tubular chiller header for location along substantially the full length of an edge of the rink near the level of the rink, said header being divided into first and second coextending chambers, a plurality of U-shaped ice forming pipes extending from the header beneath the ice level of the rink, one end of each pipe being connected to the first chamber and the other end of said each pipe being connected to the second chamber, a circulating pump connected to ends of the first and second chambers for circulating a chilling medium through said chambers and said pipes, and piping extending through said second chamber and connected to a refrigeration unit, whereby chilling medium circulated through said header and ice forming pipes is chilled in the header by heat exchange with the refrigerant carried from the refrigeration unit by the refrigerant conduction pipes.
Claim 10
Dependent Claim
150 words
Ice rink refrigeration apparatus, comprising a closed tubular chiller header for location along substantially the full length of an edge of the rink near the level of the rink, said header being divided into first and second coextending chambers, a plurality of U-shaped ice forming pipes extending from the header beneath the ice level of the rink, one end of each pipe being connected to the first chamber and the other end of said each pipe being connected to the second chamber, a circulating pump connected to ends of the first and second chambers for circulating a chilling medium through said chambers and said pipes, and piping extending through said second chamber and connected to a refrigeration unit, whereby chilling medium circulated through said header and ice forming pipes is chilled in the header by heat exchange with the refrigerant carried from the refrigeration unit by the refrigerant conduction pipes.
Claim 11
Dependent Claim
56 words
Apparatus as claimed in claim 8 including a third chamber in the header coextending with the second chamber, said pump being connected to ends of the first and third chambers adjacent one end of the header, and transfer means conducting the adjacent ends of the second and third chambers adjacent the opposite end of the header.
Claim 12
Dependent Claim
22 words
Apparatus as claimed in claim 8 including baffles in the second chamber for generating turbulence in the chilling medium during circulation thereof.
Claim 13
Dependent Claim
24 words
Apparatus as claimed in claim 9 including baffles in the second and third chambers for generating turbulence in the chilling medium during circulation thereof.
Claim 14
Dependent Claim
22 words
Apparatus as claimed in claim 8 in which said refrigerant conducting piping comprises a plurality of pipes extending through said second chamber.
Claim 15
Dependent Claim
28 words
Apparatus as claimed in claim 9 in which said refrigerant conducting piping comprises a plurality of pipes extending in series through said second chamber and said third chamber.
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 |