WO2001080615A1 - Device for cooling of heat-generating units - Google Patents

Device for cooling of heat-generating units Download PDF

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Publication number
WO2001080615A1
WO2001080615A1 PCT/SE2001/000802 SE0100802W WO0180615A1 WO 2001080615 A1 WO2001080615 A1 WO 2001080615A1 SE 0100802 W SE0100802 W SE 0100802W WO 0180615 A1 WO0180615 A1 WO 0180615A1
Authority
WO
WIPO (PCT)
Prior art keywords
outdoor air
indoor air
heat exchanger
air
flowing
Prior art date
Application number
PCT/SE2001/000802
Other languages
French (fr)
Inventor
Anders Lundgren
Original Assignee
Emerson Energy Systems Ab
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 Emerson Energy Systems Ab filed Critical Emerson Energy Systems Ab
Priority to AU2001248956A priority Critical patent/AU2001248956A1/en
Priority to BR0110045-9A priority patent/BR0110045A/en
Publication of WO2001080615A1 publication Critical patent/WO2001080615A1/en

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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

Definitions

  • the present invention relates to a method for cooling heat generating units in for instance radio base stations, and an apparatus for cooling heat generating units in for instance radio base stations.
  • a radio base station comprises a lot of heat dissipating units.
  • mechanical cooling system such as compressor operated evaporation systems are used to manage cooling and temperature control. In these systems hot indoor air is passing through an evaporator so as to cool it. The cooled air is then recirculated to the space. Continuous heat dissipation require continuous cooling.
  • cooling is required, which preferably is taken from the atmosphere surrounding the radio base station.
  • a heat exchanging function with crossing air flow directions in a vertical area, such as a wall portion of the radio base station, for example constituting a part of a door of the radio base station, between at least one internal vertical air flow and at least one cooling, from the side flowing, external air flow, excellent cooling of the equipment may be achieved, without substantially affecting the space intended for the equipment due to the presence of the heat exchanging function.
  • the heat ex- changing function in an openable door for the space intended for the equipment, the components of the heat exchanging function may easily be mounted, repaired and cleaned.
  • Fig. 1 shows an internal view of a climate module according to the invention for support by e.g. a door.
  • Fig. 2 shows an external view of the climate module in fig. 1.
  • Fig. 3 shows an internal view of the climate module in fig. 2 with stated flow direc- tions.
  • Fig. 4 shows an internal view of an alternative climate module according to the invention for support by a door.
  • Fig. 5 shows an external view of the climate module in fig. 4.
  • Fig. 6 shows an internal view of the climate module in fig. 4 with stated flow directions.
  • Fig. 7 shows an internal view of yet a climate module according to the for support by a door.
  • Fig. 8 shows an external view of the climate module in fig. 7.
  • Fig. 9 shows an internal view of the climate module in fig. 8 with stated flow direc- tions.
  • a so called climate module 1 is shown, and how such a climate mod- ule is to be arranged for cooling a radio base station.
  • the climate module will be placed as a unit on an inner side of a door of the radio base station, wherein the climate module is adapted as a heat exchanger, so as to cool an indoor air flow by means of an outdoor air flow originating from the surrounding atmosphere, wherein the cooled indoor air is used for cooling heat generating units in the radio base station.
  • the climate module 1 is arranged, and on which inner side an opening 2 is located at an upper part, for intake of heated indoor air 3, and at a lower part an opening 4 is located, for exhaust of cooled indoor air 5, whereby parts of a fan 6 for intake of heated indoor air and exhaust of cooled indoor air are shown.
  • an opening 7 is located at an upper part, for intake of cold outdoor air 8 intended for heat exchange, and an opening 9 for exhaust of, by indoor air heated through said heat exchange, outdoor air 10.
  • an opening for exhaust of outdoor air 12 is provided, which outdoor air 12 is heated by means of heat exchanged indoor air, and an opening 13 for intake of cold outdoor air 14 intended for heat exchange.
  • parts of intake fans 15, 16 are indicated.
  • FIG. 3 an external view of the climate module is shown, where a cover at the door side is removed, so as to show how the various air flows are acting inside the climate module.
  • At an upper part of the climate module an outdoor air flow 17 is crossing, in a heat exchanger 18, heated indoor air 19 from right to left.
  • the intake fans 15, 16 are mounted on beams 24, 25 connecting the upper side and the lower side of the climate module, respectively with an intermediate partition element 26.
  • the intake fans 15, 16 cold outdoor air is drawn into and forced through the heat exchangers 18, 21, and the heated outdoor air is collected in spaces 27, 28 within the openings 9, 11 for exhaust of the heated outdoor air.
  • the opening 2 for intake of heated indoor air is shown, and in the centre of the lower part the intake fan 6 for the heated indoor air is shown.
  • the horizontal arrows 17, 20 show the flow directions of the cold outdoor air through the heat exchangers 18, 21 from the intake fans 15, 16 to the outlet chambers 27, 28.
  • the vertical arrow 19 shows the flow direction of the heated indoor air through the heat exchangers 18, 21 from the inlet opening 2 to the intake fan 6.
  • FIG. 4 an interior view of the climate module 29 is shown, which is similar to the climate module shown in figs. 1-3, and being provided with a sealing cover 30.
  • this type of heat exchanger may be arranged on the inner side of a door of e.g. a radio base station. Heated air 31 from the various units in the radio base station is drawn into an opening 32 in the upper part of the module and is then exhausted, cooled 33 by outdoor air, from an opening 34 in the lower part of the module, which may be provided with guiding ribs so as to achieve some guidance of the cooled in- door air leaving the module.
  • a radio base station Heated air 31 from the various units in the radio base station is drawn into an opening 32 in the upper part of the module and is then exhausted, cooled 33 by outdoor air, from an opening 34 in the lower part of the module, which may be provided with guiding ribs so as to achieve some guidance of the cooled in- door air leaving the module.
  • an external view of the box-like module 29 comprising two cooling air intakes 35, 36 arranged on a first side of the module in connection with intake fans 37, 38 for cooling air 42, and two outlet chambers 40, 41 for heated cooling air 43, are arranged on the second side. At a lower portion the location of an intake fan 44 is indicated.
  • an internal view of the flow directions through the climate module 29 having the cover 30 removed are shown.
  • the horizontal arrows 45, 46 show the flow directions through the heat exchangers 47, 48 of the cooling air flows, from the intake fans 37, 38 at the right, to the outlet chambers 40, 41 at the left.
  • a vertical arrow 49 shows a flow direction of a heated air flow from the upper inlet opening 32, through the heat exchangers 47, 48, to a lower outlet opening 50, in which the intake fan 44 is arranged.
  • the intake fans 37, 38 for the outdoor air are arranged on respective cross bars 52 against the cover.
  • the outlet chamber 34 for the cooled indoor air requires a greater portion of the lower part of the module, which together with the guiding ribs result in a directed cooling air flow for the interior units accommodated in for instance a radio base station.
  • a climate module 53 adapted for heat exchange is shown, which is to be mounted on e.g. the inner side of a door of a radio base station, so as to cool the various units within the radio base station.
  • an inlet opening 54, and behind this opening, an intake fan 55 are located for intake of hot indoor air 56, and at a lower part an outlet opening 57 for cooled indoor air 58 is located.
  • an external view of the climate module is shown having, at a lower portion, two inlet openings 59, 60 being provided with intake fans 61, 62 for cold outdoor air 63, 64 and at an upper portion, two outlet openings 65, 66 for heat exchanged outdoor air 67, 68.
  • the cold outdoor air 63, 64 is drawn into the climate module, e.g. by means of the fans through a grate in the door side, which then force the cold air, from two directions, through a heat exchanger, whereupon the outdoor air leaves the heat exchanger and continuous out via the outlet openings 65, 66.
  • FIG. 9 the flow directions through the heat exchanger are shown.
  • An arrow 70 shows the flow direction of the cold outdoor air from a lower intake chamber 71 at the left, through the heat exchanger 69, and further on to an upper outlet chamber 72 at the right.
  • An arrow 73 shows the flow direction of the cold outdoor air from a lower intake chamber 74 at the right, through the heat exchanger 69, and further on to an upper outlet chamber 75 at the left.
  • a vertical arrow 76 shows the flow direction of the heated indoor air from the intake fan 55, through the heat exchanger 69, to the lower outlet chamber 57.
  • a supervisory unit 77 may control, by means of detecting tem- peratures 78, 79, the speed of revolution of at least one of the fans, so as to achieve an optimal cooling of the enclosed heat generating electronics.

Abstract

The present invention relates to a method and an apparatus for cooling heat generating units, such as mobile telephone equipment in a radio base station. By providing a heat excahnger (69) having crossing flow directions for an internal vertical air flow (76) and external lateral, cooling air flows (70, 73) in a vertical area, such as a wall portion to the radio base station, for instance as a part of a door to the radio base station, excellent cooling may be achieved without substantially affecting the space by means of the heat exchanging function, which is intented for the equipment.

Description

DEVICE FOR COOLING OF HEAT-GENERATING UNITS
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for cooling heat generating units in for instance radio base stations, and an apparatus for cooling heat generating units in for instance radio base stations. A radio base station comprises a lot of heat dissipating units.
STATE OF THE ART
Telephone equipment located in closed spaces release heat during its operation. This process is continuously in progress and the temperature around the equipment must be kept within certain limits. Particularly, it is of great importance that a specified maximum temperature is not to be exceeded. Usually, mechanical cooling system, such as compressor operated evaporation systems are used to manage cooling and temperature control. In these systems hot indoor air is passing through an evaporator so as to cool it. The cooled air is then recirculated to the space. Continuous heat dissipation require continuous cooling. Prior art documents, such as US-A-3 559 728, DE-C2-3 044 135, DE-C1-4 134 429 and Ericsson Review, ERA, no. 9, 82-10-01, page 24-26 "Klimatisering av apparatskap" show how electronics enclosed in a space may be cooled by means of interchange of heat, i.e. letting cold outdoor air flows cool hot indoor air flows in a heat exchanger.
SUMMARY OF THE INVENTION
To cool telephone equipment in outdoor cabinets, such as a mobile telephone equipment in a radio base station cooling is required, which preferably is taken from the atmosphere surrounding the radio base station. By arranging at least one heat exchanging function with crossing air flow directions in a vertical area, such as a wall portion of the radio base station, for example constituting a part of a door of the radio base station, between at least one internal vertical air flow and at least one cooling, from the side flowing, external air flow, excellent cooling of the equipment may be achieved, without substantially affecting the space intended for the equipment due to the presence of the heat exchanging function. By arranging the heat ex- changing function in an openable door for the space intended for the equipment, the components of the heat exchanging function may easily be mounted, repaired and cleaned.
The invention will now be more closely described by means of preferred embodi- ments and with reference to appended drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 shows an internal view of a climate module according to the invention for support by e.g. a door.
Fig. 2 shows an external view of the climate module in fig. 1.
Fig. 3 shows an internal view of the climate module in fig. 2 with stated flow direc- tions.
Fig. 4 shows an internal view of an alternative climate module according to the invention for support by a door.
Fig. 5 shows an external view of the climate module in fig. 4.
Fig. 6 shows an internal view of the climate module in fig. 4 with stated flow directions.
Fig. 7 shows an internal view of yet a climate module according to the for support by a door. Fig. 8 shows an external view of the climate module in fig. 7.
Fig. 9 shows an internal view of the climate module in fig. 8 with stated flow direc- tions.
PREFERRED EMBODIMENTS
In fig. 1 and 2 a so called climate module 1 is shown, and how such a climate mod- ule is to be arranged for cooling a radio base station. Preferably, the climate module will be placed as a unit on an inner side of a door of the radio base station, wherein the climate module is adapted as a heat exchanger, so as to cool an indoor air flow by means of an outdoor air flow originating from the surrounding atmosphere, wherein the cooled indoor air is used for cooling heat generating units in the radio base station. Preferably, on the inner side of the door, see figure 1, the climate module 1 is arranged, and on which inner side an opening 2 is located at an upper part, for intake of heated indoor air 3, and at a lower part an opening 4 is located, for exhaust of cooled indoor air 5, whereby parts of a fan 6 for intake of heated indoor air and exhaust of cooled indoor air are shown. On the outside of the climate module, see fig. 2, an opening 7 is located at an upper part, for intake of cold outdoor air 8 intended for heat exchange, and an opening 9 for exhaust of, by indoor air heated through said heat exchange, outdoor air 10. In a lower part of the climate module an opening for exhaust of outdoor air 12 is provided, which outdoor air 12 is heated by means of heat exchanged indoor air, and an opening 13 for intake of cold outdoor air 14 intended for heat exchange. In the openings intended for intake of cold outdoor air, parts of intake fans 15, 16 are indicated. In fig. 3 an external view of the climate module is shown, where a cover at the door side is removed, so as to show how the various air flows are acting inside the climate module. At an upper part of the climate module an outdoor air flow 17 is crossing, in a heat exchanger 18, heated indoor air 19 from right to left. In spaces 22, 23 adapted for intake of outdoor air the intake fans 15, 16 are mounted on beams 24, 25 connecting the upper side and the lower side of the climate module, respectively with an intermediate partition element 26. By means of the intake fans 15, 16 cold outdoor air is drawn into and forced through the heat exchangers 18, 21, and the heated outdoor air is collected in spaces 27, 28 within the openings 9, 11 for exhaust of the heated outdoor air. In the centre of the upper part of the climate module the opening 2 for intake of heated indoor air is shown, and in the centre of the lower part the intake fan 6 for the heated indoor air is shown. The horizontal arrows 17, 20 show the flow directions of the cold outdoor air through the heat exchangers 18, 21 from the intake fans 15, 16 to the outlet chambers 27, 28. The vertical arrow 19 shows the flow direction of the heated indoor air through the heat exchangers 18, 21 from the inlet opening 2 to the intake fan 6.
In fig. 4 an interior view of the climate module 29 is shown, which is similar to the climate module shown in figs. 1-3, and being provided with a sealing cover 30. Also, this type of heat exchanger may be arranged on the inner side of a door of e.g. a radio base station. Heated air 31 from the various units in the radio base station is drawn into an opening 32 in the upper part of the module and is then exhausted, cooled 33 by outdoor air, from an opening 34 in the lower part of the module, which may be provided with guiding ribs so as to achieve some guidance of the cooled in- door air leaving the module. In fig. 5 an external view of the box-like module 29 is shown, comprising two cooling air intakes 35, 36 arranged on a first side of the module in connection with intake fans 37, 38 for cooling air 42, and two outlet chambers 40, 41 for heated cooling air 43, are arranged on the second side. At a lower portion the location of an intake fan 44 is indicated. In fig. 6 an internal view of the flow directions through the climate module 29 having the cover 30 removed are shown. The horizontal arrows 45, 46 show the flow directions through the heat exchangers 47, 48 of the cooling air flows, from the intake fans 37, 38 at the right, to the outlet chambers 40, 41 at the left. A vertical arrow 49 shows a flow direction of a heated air flow from the upper inlet opening 32, through the heat exchangers 47, 48, to a lower outlet opening 50, in which the intake fan 44 is arranged. The intake fans 37, 38 for the outdoor air are arranged on respective cross bars 52 against the cover. In this embodiment, the outlet chamber 34 for the cooled indoor air requires a greater portion of the lower part of the module, which together with the guiding ribs result in a directed cooling air flow for the interior units accommodated in for instance a radio base station.
In fig. 7 yet an example of a climate module 53 adapted for heat exchange is shown, which is to be mounted on e.g. the inner side of a door of a radio base station, so as to cool the various units within the radio base station. At an upper, inner part of the climate module an inlet opening 54, and behind this opening, an intake fan 55 are located for intake of hot indoor air 56, and at a lower part an outlet opening 57 for cooled indoor air 58 is located. In fig. 8 an external view of the climate module is shown having, at a lower portion, two inlet openings 59, 60 being provided with intake fans 61, 62 for cold outdoor air 63, 64 and at an upper portion, two outlet openings 65, 66 for heat exchanged outdoor air 67, 68. The cold outdoor air 63, 64 is drawn into the climate module, e.g. by means of the fans through a grate in the door side, which then force the cold air, from two directions, through a heat exchanger, whereupon the outdoor air leaves the heat exchanger and continuous out via the outlet openings 65, 66. In fig. 9 the flow directions through the heat exchanger are shown. An arrow 70 shows the flow direction of the cold outdoor air from a lower intake chamber 71 at the left, through the heat exchanger 69, and further on to an upper outlet chamber 72 at the right. An arrow 73 shows the flow direction of the cold outdoor air from a lower intake chamber 74 at the right, through the heat exchanger 69, and further on to an upper outlet chamber 75 at the left. A vertical arrow 76 shows the flow direction of the heated indoor air from the intake fan 55, through the heat exchanger 69, to the lower outlet chamber 57. By letting two cold sides run crosswise through the heat exchanger a great temperature gradient is achieved between the hot and the cold sides of the heat exchanger.
By measuring and registering the temperature of the indoor air and the outdoor air, at the same time as at least one, or both, of the fans for the indoor air and the outdoor is controllable, a supervisory unit 77 may control, by means of detecting tem- peratures 78, 79, the speed of revolution of at least one of the fans, so as to achieve an optimal cooling of the enclosed heat generating electronics.
The invention is of course not limited to the above described, and on the drawing shown embodiments, but can be modified within the scope of the appended claims.

Claims

1. Method for cooling heat generating units in e.g. a radio base station, characterised in that cold outdoor air is cooling heated indoor air in at least one heat ex- changer, which is located vertically in an area adjacent to a space enclosing the heat generating units, wherein the indoor air is flowing vertically through the heat exchanger and crosses the outdoor air, which is flowing through the heat exchanger from the side.
2. Apparatus for cooling heat generating units in e.g. a radio base station, characterised in that in an area adjacent to a space enclosing the heat generating units is arranged, on an inner side of the adjacent area, at least one inlet opening (2; 32; 54) for heated indoor air and at least one outlet opening (4; 34; 57) for indoor air which is cooled by outdoor air; in that on the outside is arranged at least one inlet opening (7, 13; 35, 36; 59, 60) for outdoor air and at least one outlet opening (9, 11; 40, 41; 65, 66) for outdoor air which is heated by the indoor air; in that at least one heat exchanger (18, 21; 47, 48; 69) is arranged in the adjacent area; in that on the inner side of the inlet opening is arranged that vertically flowing, heated indoor air crosses, from at least one side flowing, outdoor air from the inlet opening for heat exchange in a heat exchanger; in that from the heat exchanger is arranged that the cooled indoor air is recirculated to the enclosed space; and that the heated outdoor air is arranged to be recirculated to the surrounding outdoor air.
3. Apparatus according to claim 2, characterised in that from the inlet opening(s)
(7, 13; 35, 36) for outdoor air arranged at the outside, the flowing outdoor air (17, 20; 45, 46) is arranged to cross, from the side and horizontally, the vertically flowing indoor air (19; 49) in at least one heat exchanger (18, 21; 47,48).
4. Apparatus according to claim 2 or 3, characterised in that from the inlet openings (35, 36) for outdoor air arranged at the outside, the flowing outdoor flows (45, 46) are arranged in opposite directions, so as to cross, from the side, the vertically flowing indoor air (49) in at least one heat exchanger (47, 48).
Apparatus according to claim 2, characterised in that from the inlet openings (59, 60) for outdoor air arranged on the outside, the flowing outdoor flows (70,
73) are arranged in opposite directions, so as to cross, from the side, the vertically flowing indoor air (76) in at least one heat exchanger (69).
Apparatus according to any of claim 2-5, characterised in that at least one fan (6; 44; 55) is arranged for an indoor air flow (19; 49; 76) for intake to, passage through, and exhaust from, at least one heat exchanger (18, 21; 47, 48; 69).
Apparatus according to any of claim 2-5, characterised in that at least one fan (15, 15; 37, 38; 61, 62) is arranged for an outdoor air flow (17, 20; 45, 46; 70, 73) for intake to, passage through, and exhaust from, at least one heat exchanger
(18, 21; 47, 48; 69).
Apparatus according to any of claim 2-7, characterised in that a temperature detecting (78, 79) is arranged to be registered by means of a supervisory unit (77), and in that this unit is adapted to automatically control at least one fan for indoor air and/or outdoor air, so as to achieve an optimal cooling of the heat generating units enclosed in the space.
Apparatus according to any of claim 2-8, characterised in that the adjacent area is vertical.
Apparatus according to any of claim 2-9, characterised in that the adjacent area is a part of a door to the space.
PCT/SE2001/000802 2000-04-14 2001-04-10 Device for cooling of heat-generating units WO2001080615A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2001248956A AU2001248956A1 (en) 2000-04-14 2001-04-10 Device for cooling of heat-generating units
BR0110045-9A BR0110045A (en) 2000-04-14 2001-04-10 Air-conditioned module

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0001406-8 2000-04-14
SE0001406A SE520099C2 (en) 2000-04-14 2000-04-14 Device for cooling heat generating units

Publications (1)

Publication Number Publication Date
WO2001080615A1 true WO2001080615A1 (en) 2001-10-25

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ID=20279337

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/000802 WO2001080615A1 (en) 2000-04-14 2001-04-10 Device for cooling of heat-generating units

Country Status (6)

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US (1) US20030051864A1 (en)
CN (1) CN1423918A (en)
AU (1) AU2001248956A1 (en)
BR (1) BR0110045A (en)
SE (1) SE520099C2 (en)
WO (1) WO2001080615A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004062332A2 (en) * 2002-12-18 2004-07-22 3M Innovative Properties Company Environmental control kit for sealed cabinets
EP2629383A1 (en) 2012-02-17 2013-08-21 ABB Oy Enclosure for housing electrical equipment

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008241232A (en) * 2007-02-26 2008-10-09 Denso Corp Ebullient cooling device
US20090135561A1 (en) * 2007-11-23 2009-05-28 Cheng-Chung Chang Electronic device with airflow field
FI20085412L (en) * 2008-05-06 2009-11-07 Flaekt Woods Ab Procedure for using outdoor air to cool room devices
JP2010251620A (en) * 2009-04-17 2010-11-04 Sony Corp Electronic apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535386A (en) * 1983-05-23 1985-08-13 Allen-Bradley Company Natural convection cooling system for electronic components
WO1997047167A1 (en) * 1996-06-04 1997-12-11 David Stephen Hobday Cooling system for equipment enclosure
US5978218A (en) * 1994-11-24 1999-11-02 Advantest Corp. Cooling system for IC tester
US5986883A (en) * 1997-11-05 1999-11-16 Micron Electronics, Inc. Apparatus for cooling central processing units in personal computers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535386A (en) * 1983-05-23 1985-08-13 Allen-Bradley Company Natural convection cooling system for electronic components
US5978218A (en) * 1994-11-24 1999-11-02 Advantest Corp. Cooling system for IC tester
WO1997047167A1 (en) * 1996-06-04 1997-12-11 David Stephen Hobday Cooling system for equipment enclosure
US5986883A (en) * 1997-11-05 1999-11-16 Micron Electronics, Inc. Apparatus for cooling central processing units in personal computers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004062332A2 (en) * 2002-12-18 2004-07-22 3M Innovative Properties Company Environmental control kit for sealed cabinets
WO2004062332A3 (en) * 2002-12-18 2004-09-10 3M Innovative Properties Co Environmental control kit for sealed cabinets
EP2629383A1 (en) 2012-02-17 2013-08-21 ABB Oy Enclosure for housing electrical equipment

Also Published As

Publication number Publication date
BR0110045A (en) 2003-06-03
US20030051864A1 (en) 2003-03-20
SE520099C2 (en) 2003-05-27
SE0001406L (en) 2001-10-15
SE0001406D0 (en) 2000-04-14
CN1423918A (en) 2003-06-11
AU2001248956A1 (en) 2001-10-30

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