FR2342445A1 - Pressure relief valve for cold store - has heating element to prevent ice blocking of inwardly and outwardly opening sprung flaps - Google Patents
Pressure relief valve for cold store - has heating element to prevent ice blocking of inwardly and outwardly opening sprung flapsInfo
- Publication number
- FR2342445A1 FR2342445A1 FR7605225A FR7605225A FR2342445A1 FR 2342445 A1 FR2342445 A1 FR 2342445A1 FR 7605225 A FR7605225 A FR 7605225A FR 7605225 A FR7605225 A FR 7605225A FR 2342445 A1 FR2342445 A1 FR 2342445A1
- Authority
- FR
- France
- Prior art keywords
- flaps
- cold store
- relief valve
- pressure relief
- inwardly
- 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.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 title 1
- 238000010438 heat treatment Methods 0.000 title 1
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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/047—Pressure equalising devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
The inwards and outwards pressure relief valve (1) is mounted by the flange (6) on the wall (P) of the cold store. The plate (8) has two square holes which are covered by spring loaded flaps (16). One flap opens outwards to relieve a high pressure in the cold store and the other flap opens inwards to relieve a depression. An electric element (4) is mounted on the bracket (3) and projects into the opening (0) to maintain the temperature in this region slightly above 0 deg.C. This prevents ice forming on the flaps (16) and so avoids the risk of ice causing the flaps to stick in the closed position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7605225A FR2342445A1 (en) | 1976-02-25 | 1976-02-25 | Pressure relief valve for cold store - has heating element to prevent ice blocking of inwardly and outwardly opening sprung flaps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7605225A FR2342445A1 (en) | 1976-02-25 | 1976-02-25 | Pressure relief valve for cold store - has heating element to prevent ice blocking of inwardly and outwardly opening sprung flaps |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2342445A1 true FR2342445A1 (en) | 1977-09-23 |
FR2342445B1 FR2342445B1 (en) | 1979-07-20 |
Family
ID=9169576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7605225A Granted FR2342445A1 (en) | 1976-02-25 | 1976-02-25 | Pressure relief valve for cold store - has heating element to prevent ice blocking of inwardly and outwardly opening sprung flaps |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2342445A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257445A (en) * | 1978-10-26 | 1981-03-24 | Buildex Incorporated | Shielded vent port |
EP0030046A2 (en) * | 1979-12-04 | 1981-06-10 | Maccari Silvana | Pressure compensation valve, particularly for hot or cold isothermal rooms |
US6038879A (en) * | 1995-08-08 | 2000-03-21 | Yvon Turcotte | Combined air exchange and air conditioning unit |
FR2932239A1 (en) * | 2008-06-05 | 2009-12-11 | Fermod | Valve for cold chamber storing food product, has flaps for closing respective pipes, and maintained in support against sealing seats by weight of flaps when pressure variation on both sides of each flap is less than threshold value |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2018147A1 (en) * | 1968-09-16 | 1970-05-29 | Gpe Controls Inc | |
FR2221654A1 (en) * | 1973-03-13 | 1974-10-11 | Baermann Max |
-
1976
- 1976-02-25 FR FR7605225A patent/FR2342445A1/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2018147A1 (en) * | 1968-09-16 | 1970-05-29 | Gpe Controls Inc | |
FR2221654A1 (en) * | 1973-03-13 | 1974-10-11 | Baermann Max |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4257445A (en) * | 1978-10-26 | 1981-03-24 | Buildex Incorporated | Shielded vent port |
EP0030046A2 (en) * | 1979-12-04 | 1981-06-10 | Maccari Silvana | Pressure compensation valve, particularly for hot or cold isothermal rooms |
EP0030046A3 (en) * | 1979-12-04 | 1982-02-03 | Maccari Silvana | Pressure compensation valve, particularly for hot or cold isothermal rooms |
US6038879A (en) * | 1995-08-08 | 2000-03-21 | Yvon Turcotte | Combined air exchange and air conditioning unit |
FR2932239A1 (en) * | 2008-06-05 | 2009-12-11 | Fermod | Valve for cold chamber storing food product, has flaps for closing respective pipes, and maintained in support against sealing seats by weight of flaps when pressure variation on both sides of each flap is less than threshold value |
Also Published As
Publication number | Publication date |
---|---|
FR2342445B1 (en) | 1979-07-20 |
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