EP0030046A2 - Druckausgleichventil, insbesondere für warme oder kalte isothermische Räume - Google Patents

Druckausgleichventil, insbesondere für warme oder kalte isothermische Räume Download PDF

Info

Publication number
EP0030046A2
EP0030046A2 EP80201019A EP80201019A EP0030046A2 EP 0030046 A2 EP0030046 A2 EP 0030046A2 EP 80201019 A EP80201019 A EP 80201019A EP 80201019 A EP80201019 A EP 80201019A EP 0030046 A2 EP0030046 A2 EP 0030046A2
Authority
EP
European Patent Office
Prior art keywords
valve
isothermal
hollow member
rooms
vertical wall
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.)
Withdrawn
Application number
EP80201019A
Other languages
English (en)
French (fr)
Other versions
EP0030046A3 (de
Inventor
Maccari Silvana
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0030046A2 publication Critical patent/EP0030046A2/de
Publication of EP0030046A3 publication Critical patent/EP0030046A3/de
Withdrawn legal-status Critical Current

Links

Images

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

Definitions

  • This invention relates to a pressure balancing valve constituted in such a manner as to constantly or continuously compensate for the pressure gradients which tend to arise between the interior and exterior of hot or cold isothermal rooms.
  • hot isothermal rooms means those rooms with a positive internal temperature.
  • cold isothermal rooms means those rooms having an internal temperature which is always negative
  • intermediate isothermal rooms refers to those rooms having an internal temperature which lies between positive and negative values, as in the case of a temperature range lying between -2°C and +4°C.
  • the temperature range for the application of the invention is from about +80°C to - 35 °C.
  • Examples of such isothermal rooms are cheese curing rooms, refrigerated rooms for preserving perishable goods and/or products, and deep-freezing rooms.
  • the main object of the present invention is to provide a continuously operating pressure balancing valve which by means of a simple, rational and extremely reliable constructional design remedies the aforesaid drawbacks.
  • this is made possible by the provision of a hollow member for disposing orthogonally to a vertical wall of an isothermal room in order to put the interior into communication with the outside, and which is transversely provided with a set of flap valve elements freely hinged upperly to said hollow member, such that the interior of this latter is divided into a group of "cascade" compartments so as to gradually and constantly balance the pressures inside and outside the relative isothermal room.
  • the hollow member of the invention is provided at its inner mouth with a perforated protection cover, whereas when intended for cold isothermal rooms, said cover is not provided, and instead a small external electrical heating resistor is prcvided on its inner terminal end in order to prevent the formation of sheets of ice due to condensation.
  • valve concerned can be mounted either encased in a vertical wall of the room or external to said wall.
  • the valve according to the invention is composed of a cylindrical containing cup 1, the base wall of which is provided with a convenient grid 66.
  • a ring 4 is designed to be mounted over this terminal part of the containing cup 1, and is provided with a set of equal through bores 5 which are radially equidistant.
  • the containing cup 1 comprises a circumferential flange 2 containing a set of radially equidistant through bores 3.
  • a circumferential shoulder 77 which acts as a stop for a hollow member 6 which is inserted into the containing cup 1.
  • This hollow member 6 is made up of parts which fit together, and is constituted by four mutually perpendicular flat walls 7 which define inside the containing cup 1 a bore extending over its entire length and with a right rectangular or square cross-section.
  • the length of the walls 7 which make up the hollow body 6 is substantially equal to the distance between the circumferential shoulder 77 and the mouth of the containing cup 1.
  • each side wall 7 is fitted with three mutually equidistant ribs each in the form of a circular segment.
  • the ribs of circular segment 11 constitute annular elements which substantially coincide with the inner cross-section of the containing cup 1.
  • Twe longitudinal grooves 9 are provided in the inner face of that pair of side walls 7 which when assembled are disposed vertically, and are positioned in proximity to the longitudinal edges of said pair of side walls 7.
  • Said longitudinal grooves 9 act as coupling seats for a like number of longitudinal lips 8 branching from those longitudinal edges of the pair of side walls 7 which are horizontal when assembled.
  • the vertical side walls ? are provided with a recess 13 externally to each longitudinal groove 9 and on the centre line of it, its purpose being to receive a tooth, not shown, which branches from the corresponding horizontal side wall.
  • the purpose of the recesses 13 and relative teeth is to correctly position in the longitudinal direction the four side walls 7 which make up the hollow member 6.
  • each vertical side wall 7 On the inside of each vertical side wall 7 there is provided a set of dead bores 12, in this case three in number, as shown in Figure 1, these being formed slightly below the upper longitudinal groove 9 of said vertical side wall 7.
  • the dead bores 12 are mutually equidistant and are provided in the central zone of the hollow member 6.
  • the two opposing sets of dead bores 12 are designed to freely receive, by insertion, a like number of hinge pins 15 branching from the upper ends of the vertical edges of three flap valve elements 14.
  • Said flaps 14 are each essentially constituted by a flat member which is slightly enlarged upperly, i.e. at the hinge pins 15.
  • the flap valve elements 14 are constructed of a suitable synthetic material.
  • the surface area of the flap valve elements 14 is substantially equal to the surface area of the through bore provided in the hollow member 6.
  • the number of dead bores 12 and the number of flaps 14 can obviously vary.
  • each horizontal side wall 7 comprises a small channel 10 over its entire length.
  • valve shown in Figure 1 is completed by a protection cover 16, the base wall of which is provided with a grid 19.
  • An outer flange 17 is provided at the mouth of the protection cover 16, for superposing on the flange 2 of the containing cup 1, and being provided with a set of through bores 18 of the same position and distribution as the through bores 3 provided in said flange 2.
  • said type of mounting relates to an isothermal room in which positive temperatures exist in its interior 32.
  • Said counting is of the encased type in that a through bore is provided in said vertical wall 30 of the isothermal room to receive the containing cup 1.
  • This latter is intended to be connected to the inner face of the wall 30 together with the protection cover 16 by means of suitable screws, for example of the expansion type, passing through the flanges 2 and 17.
  • the correct operating or horizontal position of the containing cup 1 is set by the ring 4 which is mounted over the outer part of the containing cup 1 and is locked on to the outer face of said vertical wall 30.
  • a suitable layer of insulating material is usually provided on the inside of the wall 30, its purpose being well known.
  • the mounting of the device as shown in said figure is extremely simple, and is self-evident.
  • the device uses a tubular member 33, the transverse dimensions of which are substantially the same as those of the containing cup 1, whereas its length is equal to the thickness of the vertical wall 30.
  • tubular member 33 is necessary in order to safeguard the state of the layer of insulating material which is embedded in the vertical wall 30, and to which reference has already been made.
  • the protection cover 16 has again been used in that as in the case of the preceding Figure 2, the device according to the invention is conceived as suitable for fitting to an isothermal room which operates at always positive temperatures.
  • the device comprises on the outside of the most inner part of the hollow member 6 a suitable electrical heating resistor 34, the purpose of which is to prevent the formation of ice sheets.
  • the mounting is always of the encased type as shown.
  • the hollow member which is designed for insertion into a containing cup 1 is constituted by a number of parts each of which comprises a box member 101 which is provided with a through cavity 109, the cross-section of which is in the form of a right square or rectangle.
  • an outer circular collar 106 On each end of the box member 101 there is provided an outer circular collar 106.
  • through bores 105 are provided to receive suitable assembly tie bars 107.
  • At least one mouth of each through cavity 109 is provided upperly with two opposing recesses 104 designed to house a pair of hinge pins 103 which branch from the upper ends of the vertical edges of a flap valve element 102, completely similar to the elements 14 previously referred to.
  • the surface area of the valve elements is obviously practically equal to the cross-section of the cavities 109.
  • end of a box member 101 which is to be clamped against the end provided with the recesses 104 obviously does not comprise recesses and is completely flat, in order to ensure correct operation of the relative flap 102.
  • valve thus constituted is able to satisfy any necessity deriving from internal and external pressure balancing and vice versa, for any type of hot or cold isothermal room.
  • the device according to the present invention operates properly even when mounted on refrigeration or deep-freezing rooms, even of very low temperature.
  • said electrical resistor 34 prevents the formation of ice layers or sheets which would prevent the most internal flaps from moving freely.
  • valve of this type puts the interior of the corresponding isothermal room into direct communication with the outside, and thus there is always a passage of air, even though minimal, between said interior and the outside or vice versa.
  • this division enables these heat passages to be eliminated in a similar manner to that which happens in the case of double glazed windows.

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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Valve Housings (AREA)
EP80201019A 1979-12-04 1980-10-27 Druckausgleichventil, insbesondere für warme oder kalte isothermische Räume Withdrawn EP0030046A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT46900/79A IT1126138B (it) 1979-12-04 1979-12-04 Valvola compensatrice di pressione particolarmente per celle isotermiche calde o fredde
IT4690079 1979-12-04

Publications (2)

Publication Number Publication Date
EP0030046A2 true EP0030046A2 (de) 1981-06-10
EP0030046A3 EP0030046A3 (de) 1982-02-03

Family

ID=11260385

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80201019A Withdrawn EP0030046A3 (de) 1979-12-04 1980-10-27 Druckausgleichventil, insbesondere für warme oder kalte isothermische Räume

Country Status (2)

Country Link
EP (1) EP0030046A3 (de)
IT (1) IT1126138B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162305A (en) * 1984-06-28 1986-01-29 Banbury Plastics Limited A ventilator
EP1014017A3 (de) * 1998-12-22 2001-04-18 Merloni Elettrodomestici S.p.A. Druckausgleichendes Ventil mit Niedertemperaturschutzmitteln für Kaltlagerräume
WO2001081844A1 (en) * 2000-04-20 2001-11-01 Multibrás S.A. Eletrodomésticos A vacuum-breaking valve for refrigeration appliances
WO2002048626A1 (en) * 2000-12-11 2002-06-20 Multibrás S.A. Eletrodomésticos A vacuum-breaking valve for a refrigerated compartment
US6643517B1 (en) 1999-10-15 2003-11-04 Nortel Networks Limited Method of using location information for interference protection
EP1559971A1 (de) * 2004-01-28 2005-08-03 Whirlpool Corporation Ausgleichendes Ventil für Gefriergeräte
WO2008135472A3 (de) * 2007-05-08 2009-01-22 Bsh Bosch Siemens Hausgeraete Gehäuse für ein kältegerät
CN108592494A (zh) * 2018-03-22 2018-09-28 海信容声(广东)冷柜有限公司 一种冷冻箱体气压平衡结构及冷柜
CN117128347A (zh) * 2023-10-26 2023-11-28 佛山市顺德区西科电器有限公司 一种气压平衡阀及冷柜

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139991A (en) * 1937-03-29 1938-12-13 Wingard Gunnar Refrigerator breather tube
US3680329A (en) * 1971-02-18 1972-08-01 Emhart Corp Pressure equalizing valve
AU3129471A (en) * 1970-09-29 1973-01-18 Hunt & Baird Pty Ltd Pressure-equalizing device
DE2256920A1 (de) * 1971-11-22 1973-05-30 Fermod Vorrichtung zum ausgleich von druckunterschieden zwischen einem temperaturund/oder druckgerelten raum und der umgebenden atmosphaere
FR2334035A1 (fr) * 1975-12-03 1977-07-01 Taisei Kosan Kk Appareil de commande de la pression d'air pour une chambre d'emmagasinage chaude ou froide
FR2342445A1 (fr) * 1976-02-25 1977-09-23 Fermod Dispositif de mise a l'air libre, notamment pour chambre froide

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2139991A (en) * 1937-03-29 1938-12-13 Wingard Gunnar Refrigerator breather tube
AU3129471A (en) * 1970-09-29 1973-01-18 Hunt & Baird Pty Ltd Pressure-equalizing device
US3680329A (en) * 1971-02-18 1972-08-01 Emhart Corp Pressure equalizing valve
DE2256920A1 (de) * 1971-11-22 1973-05-30 Fermod Vorrichtung zum ausgleich von druckunterschieden zwischen einem temperaturund/oder druckgerelten raum und der umgebenden atmosphaere
GB1408006A (en) * 1971-11-22 1975-10-01 Fermod Device for communicating with free air in particular for cold room
FR2334035A1 (fr) * 1975-12-03 1977-07-01 Taisei Kosan Kk Appareil de commande de la pression d'air pour une chambre d'emmagasinage chaude ou froide
US4116213A (en) * 1975-12-03 1978-09-26 Taisei Kosan Kabushiki Kaisha Air pressure control apparatus for a hot or cold storage chamber
FR2342445A1 (fr) * 1976-02-25 1977-09-23 Fermod Dispositif de mise a l'air libre, notamment pour chambre froide

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162305B (en) * 1984-06-28 1989-05-17 Banbury Plastics Limited A ventilator
GB2162305A (en) * 1984-06-28 1986-01-29 Banbury Plastics Limited A ventilator
EP1014017A3 (de) * 1998-12-22 2001-04-18 Merloni Elettrodomestici S.p.A. Druckausgleichendes Ventil mit Niedertemperaturschutzmitteln für Kaltlagerräume
US6643517B1 (en) 1999-10-15 2003-11-04 Nortel Networks Limited Method of using location information for interference protection
US6672096B2 (en) 2000-04-20 2004-01-06 Multibras S.A. Electrodomesticos Vacuum-breaking valve for refrigeration appliances
WO2001081844A1 (en) * 2000-04-20 2001-11-01 Multibrás S.A. Eletrodomésticos A vacuum-breaking valve for refrigeration appliances
WO2002048626A1 (en) * 2000-12-11 2002-06-20 Multibrás S.A. Eletrodomésticos A vacuum-breaking valve for a refrigerated compartment
US7107780B2 (en) 2000-12-11 2006-09-19 Multibras S.A. Electrodomesticos Vacuum-breaking valve for a refrigerated compartment
EP1559971A1 (de) * 2004-01-28 2005-08-03 Whirlpool Corporation Ausgleichendes Ventil für Gefriergeräte
WO2008135472A3 (de) * 2007-05-08 2009-01-22 Bsh Bosch Siemens Hausgeraete Gehäuse für ein kältegerät
CN108592494A (zh) * 2018-03-22 2018-09-28 海信容声(广东)冷柜有限公司 一种冷冻箱体气压平衡结构及冷柜
CN117128347A (zh) * 2023-10-26 2023-11-28 佛山市顺德区西科电器有限公司 一种气压平衡阀及冷柜
CN117128347B (zh) * 2023-10-26 2024-01-12 佛山市顺德区西科电器有限公司 一种气压平衡阀及冷柜

Also Published As

Publication number Publication date
IT7946900A0 (it) 1979-12-04
EP0030046A3 (de) 1982-02-03
IT1126138B (it) 1986-05-14

Similar Documents

Publication Publication Date Title
EP0030046A2 (de) Druckausgleichventil, insbesondere für warme oder kalte isothermische Räume
US4458461A (en) Support posts and/or a partitioning system
US4884415A (en) Heat transfer barrier for the yoder loop of a refrigerator cabinet
DE69917068T2 (de) Vorrichtung zur Verbindung von Türen zwischen zwei von der Umgebung abgedichteten Räumen
US20190128593A1 (en) Hermetically sealed overmolded plastic thermal bridge breaker with refrigerator cabinet liner and wrapper for vacuum insulation
US2811406A (en) Gasket
US5368381A (en) Refrigerator cabinet construction
US3671006A (en) Refrigerator wall panels with panel fasteners and apparatus for making said panels
US2752844A (en) Adjustable wall-mounted ventilator
CN109229891A (zh) 一种用于水样保存的保温箱
US3456833A (en) Cabinet construction
EP1014017B1 (de) Druckausgleichendes Ventil mit Niedertemperaturschutzmitteln für Kaltlagerräume
US4317376A (en) Flowmeter with one-piece body
US2399967A (en) Low-temperature cabinet construction
CN112761384B (zh) 一种用于建筑门窗保温性能检测的组装式实验房
US20020074140A1 (en) Screening house for microwave circuits
GB2094851A (en) Connecting panels
KR102384382B1 (ko) 보온 패키지 박스
US4918941A (en) Cryogenic ultramicrotome seal
US2244276A (en) Hinge
US3327427A (en) Cabinet door construction
RU2143653C1 (ru) Емкость с двойными стенками
US20200088456A1 (en) Freezer cabinet and method for adapting a freezer cabinet
EP1382924A1 (de) Dichtungsvorrichtung insbesondere für Türen von Kühlgeräten, Gefriergeräten und dergleichen
US1892708A (en) Door construction

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LU NL SE

17P Request for examination filed

Effective date: 19820624

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830621