WO2005034599A1 - Coffret boitier de protection dote de dispositifs de refroidissement - Google Patents

Coffret boitier de protection dote de dispositifs de refroidissement Download PDF

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Publication number
WO2005034599A1
WO2005034599A1 PCT/SE2004/000932 SE2004000932W WO2005034599A1 WO 2005034599 A1 WO2005034599 A1 WO 2005034599A1 SE 2004000932 W SE2004000932 W SE 2004000932W WO 2005034599 A1 WO2005034599 A1 WO 2005034599A1
Authority
WO
WIPO (PCT)
Prior art keywords
cabinet
air conditioning
temperature
conditioning unit
air
Prior art date
Application number
PCT/SE2004/000932
Other languages
English (en)
Inventor
Ulf Jörgen ERIKSSON
Original Assignee
Eriksson Ulf Joergen
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 Eriksson Ulf Joergen filed Critical Eriksson Ulf Joergen
Priority to EP04748991A priority Critical patent/EP1673967A1/fr
Publication of WO2005034599A1 publication Critical patent/WO2005034599A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
    • H05K7/206—Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
    • H05K7/207—Thermal management, e.g. cabinet temperature control

Definitions

  • the present invention pertains generally to an arrangement relating to a protective box-like shelter or cabinet and more particularly to a temperature regulating arrangement, where said box-like shelter as a structure or cabinet is adapted inter alia, to enclose electronic equipment that generates heat when in operation.
  • said cabinet In order to regulate the temperature of the interior of said shelter or cabinet towards a predetermined or pre-set value, such as a constant value, said cabinet encloses or is connected to one or more temperature regulating means, in the following designated as a first air conditioning unit.
  • Said first air conditioning unit is normally adapted to extract heat from the interior of the cabinet, in the following designated as a first cabinet or housing.
  • the enclosed electronic equipment is, for safety reasons, connectable to one or more standby battery assemblies, in the following illustrated as a first battery assembly.
  • the standby battery assembly is enclosed in a further, second cabinet or box which is much smaller than the first cabinet enclosing said electronic equipment and which includes a further temperature regulating means, in the following designated as a second air conditioning unit, adapted to regulate and keep the temperature within said second cabinet at a predetermined value or per-set value, such as a constant value or level.
  • a further temperature regulating means in the following designated as a second air conditioning unit, adapted to regulate and keep the temperature within said second cabinet at a predetermined value or per-set value, such as a constant value or level.
  • the temperature regulating arrangement is adapted for use within a first cabinet, in a form and shape adapted to enclose one or more telephone system related equipments, particularly a telephone station related to a mobile telecommunications system, such as GSM- and UMTS-systems.
  • first cabinet especially in regard of a telephone station, where the enclosed electronic equipment generates more or less time-related heat, whereby the heat generated is dependent on operation intensity
  • different temperature regulating means and/or arrangements and/or first air conditioning units to regulate the prevailing temperature towards a chosen and constant value, this value being, in the following description, designated as a high temperature value, and is regulated towards a constant value, falling within the temperature range of say 30 to 40°C.
  • the used temperature regulating means an arrangement constructed to this end and/or an air conditioning unit are each adapted for regulating a momentary temperature within a stipulated temperature span, required for a longer life function of the electronic equipment.
  • a required standby battery assembly is usually enclosed in a small second cabinet or box-like structure, arranged within and covered by said first cabinet and thus influenced indirectly by the regulated high temperature value within the cabinet.
  • Used lead-acid type of standby batteries should have, within said second cabinet or box, an environment whose prevailing temperature has been regulated towards a predetermined value, a constant value, this value being designated as a low temperature value.
  • a temperature regulating arrangement related to each of said two cabinets, must individually regulate the temperatures within the two different environments towards two different temperature values and thus considering different criteria, one set of criteria being valid for the electronic equipment within said first cabinet on the one hand and another set of criteria being valid for the lead-acid batteries within said second cabinet on the other hand.
  • Patent Publication US-A1 -2003/0094 263 a method and an apparatus related to a first cabinet or housing for electronic equipment, which are intended to extend the useful life of a lead-acid type standby battery assembly by applying a "conductive" cooling function directly towards the bottom surfaces of the batteries, in order to maintain the batteries and said second cabinet at a constant temperature, of about 25°C, regardless of the ambient temperature surrounding the battery assembly and said second cabinet or box.
  • FIG. 1 illustrates schematically an outdoor electronic equipment including cabinet, denoted generally by reference numeral (10), which is designed to enclose active communications equipment, such as banks of printed circuit boards or the like.
  • cabinet denoted generally by reference numeral (10)
  • active communications equipment such as banks of printed circuit boards or the like.
  • the cabinet is divided into an upper equipment-related or enclosing chamber (12) and a lower battery-related or enclosing chamber (14).
  • a flat cold plate (20) included in a temperature regulating means or air conditioning unit is here disposed beneath the batteries (16), and is in a direct contact therewith.
  • the cold plate (20), sometimes also referred to as an evaporator, is connected through suitable conduits (22 and 24) to a compressor (30), which is designed to circulate a refrigerant through the cold plate (20), to achieve a predetermined temperature within said second, and separate battery, chamber.
  • a heating pad (32) Located beneath said cold plate (20) is a heating pad (32). Once again, there is direct contact between the heating pad and the cold plate. Direct contact implies that heat transfer will occur through conduction and not through convection.
  • a cooled cold plate will engender heat flow from the batteries to the cold plate under warm ambient conditions.
  • Heat from the heating pad will be transferred by conduction to the cold pate and in turn will be transferred to the batteries by conduction.
  • the main objective here is to efficiently and effectively maintain the batteries at a constant temperature and regulate the instant temperature within set values, such as 25°C, plus or minus about 2°C. This will greatly prolong battery life in a reliable and relatively inexpensive manner.
  • An insulation pad (34) is located beneath the heating pad and minimizes heat transfer to a concrete pad (35), which is typically used to mount equipment cabinets.
  • the insulation pad may be made of high temperature plastic, one eighth of an inch thick.
  • the cabinet also encloses a heat exchanger (36) in the equipment or first chamber (12).
  • the heat exchanger (36) sucks in ambient air (40) through a set of louvers (44) related to the batteries-housing cabinet, through the agency of a fan (42).
  • the used air is then exhausted through a second opening (46), back to the ambient environment.
  • the air heated by the equipment in chamber (12) is moved through the heat exchanger (36) by a second fan (50).
  • the air enters the heat exchanger (36) through an opening (52) and exits back into the equipment chamber (12) through another opening (54).
  • the equipment chamber (12) is weather sealed so that air, dust, water and the like is kept away form the equipment, except when the equipment is serviced.
  • the compressor dissipates that through an opening (56) in the cabinet.
  • This arrangement uses an air conditioning unit with a compressor, whereby the heat generated by this unit is directly transported to the ambient air.
  • the air intake is arranged to pass said second cabinet and thus the temperature regulation is dependent on the ambient air temperature. Consequently it is well known that a normal radio base station (RBS) or electronic enclosure or cabinet (shelter) that is seen along the roads with a mast develops a large amount of heat load from its equipment (GSM- or UMTS-system related equip- ment).
  • RBS radio base station
  • a normal yearly average energy consumption required to cool down the interior of the cabinet is calculated, under realistic conditions and criteria, up to 26000 kWh/ year.
  • Telecom standard designated ETSI European Telecom Standard
  • ETSI European Telecom Standard
  • Free cooling with a heat exchanger that does not mix indoor air with ambient air without the use of a filter is favourable and can be temperature controlled with a fan, driven by 48 VDC.
  • an RBS-station enclosed in a first cabinet, has been cooled down to 25°C, with different kind of air-conditioners, for achieving human comfort cooling, and the temperature thus chosen is not especially designed for the operation of the installed electronic equipment, which requires not only a higher temperature but also requires a temperature swing of less than 0,5°C temperature changes per minute.
  • thermal runaway can occur and standby batteries have to be re-charged quite frequently.
  • Some manufactures of lead-acid type batteries recommend a constant temperature of 20°C for optimal lifetime and expects a very small temperature swing.
  • Standby batteries are used when there is a power failure to the site, so that the RBS-station can operate in an emergency state for e.g. 4 hours.
  • a technical problem is one of evaluating the consequences of comprehending and realising the advantages of taking and/or suggesting constructive steps within a shelter or first cabinet, adapted to enclose an electronic equipment that develops heat in operation inside said first cabinet, and using a first air conditioning unit, adapted to regulate the temperature inside said first cabinet and using a standby battery assembly, wherein said standby battery assembly is enclosed in a further or second cabinet, and wherein said further or second cabinet is allotted a further or second air conditioning unit, adapted to regulate and keep the temperature within said further or second cabinet at a constant level, and of providing an energy saving temperature regulating arrangement in which said further or second air conditioning unit includes a cooling section that faces towards said further or second cabinet and its enclosed standby battery assembly or assembles and also includes a heating section that faces towards said first cabinet and its enclosed electronic equipment.
  • Another technical problem will be seen to reside in evaluating the consequences of comprehending and realising the advantages afforded by and/or the suggestion of constructive steps to be taken in arranging and especially designing said first air conditioning unit for a set of electronic equipments, with a maximized predetermined swing, such as a temperature change of less than 0,5°C per minute.
  • Another technical problem will be seen to reside in evaluating the consequences of comprehending and realising the advantages afforded by and/or the suggestion of constructive steps to be taken in arranging for gases, such as issuing from a lead- acid battery assembly, to be ventilated out from the assembly cabinet to ambient outdoor air through a small pipe or hose.
  • Another technical problem will be seen to reside in evaluating the consequences of comprehending and realising the advantages afforded by and/or the suggestion of constructive steps to be taken in effecting said ventilation by activating a fan, causing an overpressure inside said further or second cabinet.
  • This invention has as its starting point an arrangement related to a protective shelter or first cabinet, adapted to enclose electronic equipment that develops heat during its operation, and a first air conditioning unit, adapted to regulate the temperature inside said first cabinet towards a first predetermined, such as constant, level, and the use of a standby or back-up battery assembly or assemblies, wherein said standby battery assembly is enclosed in a further, a second, cabinet, whereby said second cabinet is allotted a further, a second, air conditioning unit which is adapted to regulate the temperature inside said second cabinet towards a second predetermined, such as a constant, level and whereby said first level is chosen higher than said second level.
  • said further or second air conditioning unit is arranged with its cooling section facing towards the inner of said further or second cabinet and with its heating section facing towards the inner of said first cabinet.
  • said first air conditioning unit is adapted to keep the temperature within said cabinet at a first predetermined value, such as a constant level, adapted to requirements stipulated by the producer of the enclosed electronic equipment, such as a temperature level of 35°C or thereabouts.
  • said first air conditioning unit is arranged for and especially designed for a chosen electronic equipment or equipments, with a maximized predetermined tem- perature variation or change per time unit, such as a temperature change of less than 0,5°C per minute.
  • Said standby battery assembly is dimensioned and adapted to fully energize said first and second air conditioning units and said electronic equipment or equipments over a predetermined and pre-set time interval, in the event of a power failure.
  • Gases generated from lead-acid batteries within said assembly are ventilated out to ambient outdoor air through a small pipe or hose.
  • Said ventilation is achieved by operating a fan that creates an overpressure in the second cabinet.
  • said first cabinet a double sided, extruded heat-sink air- to-air heat exchange unit, said extruded heat sink heat exchanger being located at one or more walls and wall sections and/or at the ceiling and ceiling sections, with one side facing ambient shadow conditions and with the other side facing the indoor conditions within said first cabinet.
  • Figure 1 is a perspective and partly cut away view of a protective shelter or a first cabinet, enclosing electronic equipment related to a GSM-system, and enclosing also a further or second, smaller, cabinet or box, housing a standby battery assembly and illustrates an arrangement related to the present invention.
  • Figure 2 is a first perspective view of an arrangement-related second air conditio- ning unit and shows the part thereof facing towards said first cabinet enclosing said electronic equipment,
  • Figure 3 is another perspective view of said second air conditioning unit, according to figure 2, and shows the part thereof facing towards said further or second cabinet or box enclosing said standby battery assembly,
  • Figure 4 shows a double sided extruded heat-sink or air-to-air heat exchange unit
  • Figure 5 shows a cut-away section of said heat exchange unit illustrating three fins arranged to one side of a basic member
  • Figure 6 shows a section of said heat exchanged first cabinet
  • Figure 7 shows a simplified electric wiring diagram illustrating the cooperation of the means related to the present invention.
  • Figure 1 is a perspective view of a protective shelter or cabinet that accommodates a telephone station 1, wherein said cabinet includes a first cabinet structure 10, which accommodates a telephone station 1 that is allotted or formed with selected electronic equipment or equipments 1a, 1b and 1c, here illustrated as an electronic equipment required for a GSM mobile telecommunications system or any other system.
  • a first cabinet structure 10 which accommodates a telephone station 1 that is allotted or formed with selected electronic equipment or equipments 1a, 1b and 1c, here illustrated as an electronic equipment required for a GSM mobile telecommunications system or any other system.
  • Said electronic equipment 1a, 1b, 1c generates heat during its operation and the heat intensity generated varies in time, more heat being generated at "busy hours".
  • the generated heat will differ from time to time and thus the magnitude of the temperature in said first cabinet 10 will tend to vary as a function of time. It is also to be noted that the ambient air, the wind and/or the temperature, also indirect affects the indoor temperature.
  • a first air conditioning unit 11 (not shown but indicated) is adapted to regulate the temperature inside said cabinet 10 and said unit 11 is adapted to regulate the indoor temperature towards a constant and predetermined pre-set value.
  • This first air conditioning unit 11 is constructed as a compressor driven air conditioning unit and is adapted to have a capacity sufficient for its purpose as described above.
  • This pre-set value is recommended by the producer or manufacturer of the electronic equipment 1a, 1b, 1c and is in this exemplified embodiment set to 35°C.
  • the maximum temperature variation per time unit is also set by the producer, and the used first air condition unit 11 is dimensioned and adapted to fulfil these conditions and criteria.
  • a further, small or second cabinet or box 20 is adapted to enclose a standby battery assembly or assemblies 2.
  • the standby battery assembly 2 is here shown fully enclosed by the second cabinet or box 20, which is formed from heat insulating wall sections and allotted a further or a second air conditioning unit 21 , adapted to regulate and to keep the temperature values within said second cabinet 20 at a constant level.
  • the second air conditioning unit 21 is primarily adapted to regulate the interior temperature of the second cabinet towards a predetermined pre-set value. This value is strongly recommended by the producer or manufacturer of the used batteries, such as lead-acid batteries 2a, and in this exemplified embodiment is said value set to 20°C.
  • the two air conditioning units 11 and 21 have mutually different dimensions and that the unit 11 is dimensioned for a higher capacity than the unit 21.
  • the first air conditioning unit 11 is constructed as a compres- sor driven air conditioning unit, with a capacity adapted to the environment within said first cabinet 10
  • the second air conditioning unit 21 is constructed as a thermoelectric cooling/heating unit, with a capacity adapted to the environment within said second cabinet 20.
  • the capacity allotted to the first air conditioning unit 11 is chosen much higher than the capacity allotted to the second air conditioning unit 21 , these units being of different types.
  • the second cabinet 20 is wholly or partly enclosed within said first cabinet 10. However if falls within the concept of the present invention to arrange said second cabinet 20 adjacent to or close to said first cabinet 10.
  • This further or second air conditioning unit 21 is disposed with its cooling section 21a (figure 3) facing towards the further or second cabinet 20 and is ceiling related, and with its heating section 21b (figure 2) facing towards the first cabinet 10 and spaced from the floor.
  • This arrangement of the cooling section 21a causes cooled air to sink over the batteries and thus cause an air to circulate within the cabinet 20, while the heating sec- tion 21b causes heated air to rise over the batteries and thus result in the circulation of air in said first cabinet 10.
  • the second air conditioning unit 21 is mounted on an upper wall section or ceiling section of the second cabinet or box 20, with its cooling section 21a fully exposed to the interior of a smaller second cabinet 20 and its heating section 21b fully exposed to the interior of the larger first cabinet 10.
  • the inner space of said second cabinet 20 is only somewhat larger than the volu- metric space and the confines of the batteries and said cooling section 21a.
  • this second air conditioning unit 21 will add, a small more or less constant, amount of heat to the interior of said first cabinet 10.
  • the first air conditioning unit 11 is dimensioned and adapted to keep the temperature within said first cabinet 10 at a constant level, say 35°C, and is further dimensioned for regulating the temperature within a pre-set maximum temperature change, here illustrated as 0,5°C per minute, taking into account the heat transferred to cabinet 10 from the second air conditioning unit 21.
  • said standby battery assembly 2 is adapted to energize, at full capacity, said first and/or second air conditioning unit 11 , 21 and said electronic equipment 1a, 1b, 1c in the event of a power supply failure and the capacity of the batteries must be chosen for operating the station 1 over a predetermined time duration.
  • said electronic circuit which during a short time duration is forced to accepts a higher temperature in the first cabinet 10, say 45°C, wherein said electronic circuit may function to disconnect the first air conditioning unit 11 at a temperature below a maximum value.
  • Gases from the batteries 2a in said assembly 2 are ventilated out from the second cabinet 20 to ambient outdoor air through a small pipe or hose 2b; ventilation being effected with the aid of a fan 21c that creates an overpressure in said second cabinet.
  • a small pipe or hose 2c is arranged adjacent the fan 21c and serves as an ambient outdoor air inlet.
  • the first cabinet 10 is of a double-wall construction or the vertical walls are formed as a double jacketed chimney shelter causing the air inside said double-wall construction to represent the ambient shadow temperature, where ambient outdoor air is drawn by convection between the walls so as to generate a "shadow" related temperature with regard to the inner wall section, which is covered with an inner heat insulating layer.
  • This extruded heat-sink air-to-air exchange unit 30 is located at the walls and/or ceiling of said first cabinet 10, with one side of the unit 30 facing the ambient conditions between the parallel wall sections and with the other side thereof facing the interior conditions, as illustrated in figure 6.
  • the present invention has provided totally innovative technology directed towards the telecommunications sector and enabling energy savings to be enhanced through the agency of mutually separated temperature zones in an electronic enclosure 10, the actual life span to be extended and the surety that every component in an electronic shelter or cabinet 10 will maximize its performance.
  • thermo electric principle for the batteries 2 has been developed, combining a separate battery compartment or cabinet 20 from power racks 1a, 1 b, 1c.
  • the battery cooling/heating unit 21 is constantly powered by 48 VDC.
  • Batteries 2a are cooled or heated to a fixed temperature of 20°C. This will optimise the performance and the life span of the batteries. Gases emitted from batteries are ventilated out to the ambient air through the medium of a small outlet tube 2c and a small inlet tube 2c and by the fan 21c that pressurises the cabinet 20. By insulating the batteries 2a from the rest of the equipment (micro climate) this allows the manufactures and the operators of telecom equipment to change the specification to a higher slowly floating room temperature (macro climate).
  • Operating temperature between min 25 and max 40°C for the electronics in RBS- equipment is chosen during normal operation.
  • the double wall construction of the cabinet 10, as shown in figures 1 and 6, is an example of how to circulate ambient air between walls and a ceiling to avoid a sun- radiation temperature rise from the outside.
  • the double-sided heat sinks 30, placed in an auto-convection air gap, will extend used surface area and heat flux out to ambient air or an outer environment.
  • the present invention is especially adapted for use when upgrading existing sites with power racks with battery cooler/heater units and slowly float the room temperature between e.g. 30 - 35°C.
  • the invention combines an interrelation between a micro-climate, in the battery compartment or cabinet 20, and a macro-climate in the shelter or electronic enclo- sure or cabinet 10, with a selection of different cabinet temperatures, but it also combines special shelter or cabinet solutions or a normal shelter in the shade.
  • Figure 4 shows a double sided and extruded heat sink and air-to-air heat exchange unit and figure 5 shows a section of said heat exchange unit.
  • This unit 40 exposes a main body 41 and one side of said body is formed with a row of first fins 42 and the other side of said body is formed with a row of second fins 43.
  • the unit 40 or a number of such units is/are disposed in a wall section 10a or wall sections 10a, 10b in the first cabinet 10 and first fins 42 facing outwards and second fins 43 facing inwards.
  • the fins 42a, 42b and 42c in figure 5 are mutually parallel and define there between air-flow channels, via which heat is transferred from one side 42 to the other 43 or vice versa depending upon the actual temperatures prevailing on each side of the wall sections 10a resp. 10b.
  • Figure 6 is a sectional view of said first cabinet 10 (and also of said second cabinet or box 20) from which it will be seen that the walls sections 10a, 10b and the ceiling 10c are covered by outer wall sections 60a, 60b and 60c, leaving between said wall sections 10a, 60a; 10b, 60b vertically extending air flow channels. Ambient air is introduced through these channels via a slot 61 in the bottom section of said wall section 60a and is returned to the ambient air through an upper slot 62, by convection.
  • Figure 7 shows a simplified electric wiring diagram, in which an alternating power supply is fed to a set of rectifiers 71 through wires 70.
  • the batteries 2a in the standby battery assembly 2 are charged via a wire 71a simultaneously and the power supply 48 VDC is fed through a wire 71b to the first 11 and the second 21 air conditioning units and to the electronic equipment 1a, 1b, 1c.
  • Temperature sensors or temperature sensing and control circuits 11a and 21a are arranged to activate each related unit 11 , 21 to regulate the temperature towards a pre-set value, say 35°C and 20°C.
  • the rectifying circuit 71 ' starts to feed power 48 VDC to a wire 71c and the first 11 , the second 21 air conditioning units, and the electronic equipment 1a, 1b, 1c are powered via said batteries only.
  • this circuit 11b is adapted to detect the temperature of the first cabinet 10 and to raise the temperature towards a higher level, such as to a temperature of 45°C.
  • Such an additional circuit may be connected to the air conditioning unit 21. It will be noted, however, that the capacity of the batteries used is lower at higher temperatures. With reference to Figure 6 it is further suggested that if the ambient air has a high temperature, say above 40°C, the ventilation effect is necessary in order to maintain the ambient shadow temperature.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Secondary Cells (AREA)

Abstract

L'invention concerne un compartiment ou un coffret de protection, dans lequel un premier coffret (10) est conçu pour contenir un équipement électronique (1a, 1b, 1c) dégageant de la chaleur à l'intérieur de celui-ci pendant son fonctionnement. Une première unité de conditionnement d'air (11) est conçue pour réguler la température à l'intérieur dudit premier coffret (10) et un ensemble batterie de secours (2) est enfermé dans un deuxième coffret (20) doté d'une deuxième unité de conditionnement d'air (21). Chaque unité de conditionnement d'air (11, 21) est conçue pour réguler et maintenir la température dans son coffret respectif à un niveau prédéterminé, et la deuxième unité de conditionnement d'air (21) est une unité à commande thermoélectrique prévue dans sa partie de refroidissement (21a) se trouvant en face du deuxième coffret (20), sa partie chauffante (21b) faisant face au premier coffret (10).
PCT/SE2004/000932 2003-10-06 2004-06-14 Coffret boitier de protection dote de dispositifs de refroidissement WO2005034599A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04748991A EP1673967A1 (fr) 2003-10-06 2004-06-14 Coffret boitier de protection dote de dispositifs de refroidissement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0302628-3 2003-10-06
SE0302628A SE0302628D0 (sv) 2003-10-06 2003-10-06 EPS-Solution for telecom cooling, battery compartment cooling or heating and emergency cooling

Publications (1)

Publication Number Publication Date
WO2005034599A1 true WO2005034599A1 (fr) 2005-04-14

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ID=29398653

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Application Number Title Priority Date Filing Date
PCT/SE2004/000932 WO2005034599A1 (fr) 2003-10-06 2004-06-14 Coffret boitier de protection dote de dispositifs de refroidissement

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Country Link
EP (1) EP1673967A1 (fr)
SE (1) SE0302628D0 (fr)
WO (1) WO2005034599A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010134855A1 (fr) * 2009-05-19 2010-11-25 Flexenclosure Ab Zones à deux climats
EP2416637A1 (fr) * 2010-08-05 2012-02-08 Ventfair GmbH Dispositif et procédé de refroidissement de pièces abritées
WO2012125116A1 (fr) * 2011-03-17 2012-09-20 Sitetel Sweden Ab Module de dégazage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5697840A (en) * 1995-12-11 1997-12-16 Lucent Technologies Inc. Electronic cabinet with vent
US6164369A (en) * 1999-07-13 2000-12-26 Lucent Technologies Inc. Door mounted heat exchanger for outdoor equipment enclosure
US20030094263A1 (en) * 2000-05-09 2003-05-22 Marconi Communications, Inc. Apparatus for cooling a battery in an outdoor equipment cabinet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5697840A (en) * 1995-12-11 1997-12-16 Lucent Technologies Inc. Electronic cabinet with vent
US6164369A (en) * 1999-07-13 2000-12-26 Lucent Technologies Inc. Door mounted heat exchanger for outdoor equipment enclosure
US20030094263A1 (en) * 2000-05-09 2003-05-22 Marconi Communications, Inc. Apparatus for cooling a battery in an outdoor equipment cabinet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010134855A1 (fr) * 2009-05-19 2010-11-25 Flexenclosure Ab Zones à deux climats
EP2416637A1 (fr) * 2010-08-05 2012-02-08 Ventfair GmbH Dispositif et procédé de refroidissement de pièces abritées
WO2012125116A1 (fr) * 2011-03-17 2012-09-20 Sitetel Sweden Ab Module de dégazage

Also Published As

Publication number Publication date
EP1673967A1 (fr) 2006-06-28
SE0302628D0 (sv) 2003-10-06

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