CA2594499A1 - Switch cabinet - Google Patents
Switch cabinet Download PDFInfo
- Publication number
- CA2594499A1 CA2594499A1 CA002594499A CA2594499A CA2594499A1 CA 2594499 A1 CA2594499 A1 CA 2594499A1 CA 002594499 A CA002594499 A CA 002594499A CA 2594499 A CA2594499 A CA 2594499A CA 2594499 A1 CA2594499 A1 CA 2594499A1
- Authority
- CA
- Canada
- Prior art keywords
- condensate
- switch cabinet
- heat exchanger
- atomizing device
- cabinet according
- 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.)
- Abandoned
Links
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 239000000443 aerosol Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000000889 atomisation Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract 2
- 230000005494 condensation Effects 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 238000007791 dehumidification Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20754—Air circulating in closed loop within cabinets
-
- 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
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/208—Liquid cooling with phase change
- H05K7/20818—Liquid cooling with phase change within cabinets for removing heat from server blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
- F24F6/14—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using nozzles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Special Spraying Apparatus (AREA)
- Mechanisms For Operating Contacts (AREA)
- Push-Button Switches (AREA)
- Switches With Compound Operations (AREA)
- Air Humidification (AREA)
- Patch Boards (AREA)
Abstract
The invention relates to a switch cabinet, comprising a closed cooling air circuit and a heat exchanger for removal of the lost heat from electronic modular units arranged within a chamber. According to the invention, at least one atomisation device is provided which transforms the condensed water into an aerosol in order to avoid draining of the condensation water appearing in the heat exchanger into the environment of the switch cabinet. The condensation water aerosol is immediately introduced into the cooling air circuit, preferably the warm and dry exhaust air flow which also guarantees an advantageous air humidity stabilization in the switch cabinet.
Description
SWITCH CABINET
The invention relates to a switch cabinet according to the preamble of claim 1.
The invention is also suitable for equipment and network cabinets, in which a cooling air flow is led in rotation and cooled with the aid of a cooling device. A
preferred field of application is constituted by server cabinets.
DE 20 2004 006 552.5 discloses a cooling system for equipment and network cabinets.
Electronic modular units, e.g. servers are located in a sealed inner area, and a closed cooling air circuit has an air-water heat exchanger for cooling the exhaust air subject to the heat loss of the electronic modular units. The air-water heat exchanger is posi-tioned in a lower area of the cabinet and there is an air guidance with air paths of equal length and therefore identical air resistances for the individual modular units, so that to the individual modular units is supplied cold fresh air with an almost uniform fresh air temperature.
For dissipating the significant heat losses of high power processors and servers of the cabinet and whilst taking account of the fact that generally there are relatively large numbers of such cabinets in a room or area, the air-water heat exchanger is connected to the building cold water supply. As a result the entire heat loss of the cabinets can be dissipated through the building cold water system and a heat transfer between the in-stallation area and the cabinets is avoided in a highly cost-saving manner.
As switch cabinets generally have an airtight construction, an air exchange between the cabinet interior and the installation area is avoided. Within the heat exchanger there can be local drops below the dew point and on using cooling water with a temperature below 12 C and/or a high atmospheric humidity in the installation area condensate is formed within the heat exchanger. This leads to a drop in the absolute atmospheric humidity within the switch cabinet, which can lead to damage to the installed modular units and systems.
It has been proposed (DE 10 2004 049 487.8) to keep stable the atmospheric humidity within the cabinet or the cooling air flow by a clearly defined external air supply. As a function of the ambient conditions and the target values in the cabinet leaks or interrup-tions are formed in the cabinet housing, which ensure a clearly defined external air sup-ply to the cabinet interior, particularly in the vicinity of a fan intake side. Through such an atmospheric humidity stabilization it is possible to avoid the disadvantages of con-densate formation and dehumidification below a preset value and in particular damage to the equipment and systems within the cabinet. However, devices are required for removing the condensate formed.
DE 298 23 784 U 1 discloses a cooling device for a switch cabinet having a condensate removal unit. The condensate is collected in a condensate collector and on reaching a presettable fill level activation takes place of a detector with a float switch. By means of a drain in the condensate tank and an outlet fine condensate is removed from the cool-ing device and switch cabinet.
The invention relates to a switch cabinet according to the preamble of claim 1.
The invention is also suitable for equipment and network cabinets, in which a cooling air flow is led in rotation and cooled with the aid of a cooling device. A
preferred field of application is constituted by server cabinets.
DE 20 2004 006 552.5 discloses a cooling system for equipment and network cabinets.
Electronic modular units, e.g. servers are located in a sealed inner area, and a closed cooling air circuit has an air-water heat exchanger for cooling the exhaust air subject to the heat loss of the electronic modular units. The air-water heat exchanger is posi-tioned in a lower area of the cabinet and there is an air guidance with air paths of equal length and therefore identical air resistances for the individual modular units, so that to the individual modular units is supplied cold fresh air with an almost uniform fresh air temperature.
For dissipating the significant heat losses of high power processors and servers of the cabinet and whilst taking account of the fact that generally there are relatively large numbers of such cabinets in a room or area, the air-water heat exchanger is connected to the building cold water supply. As a result the entire heat loss of the cabinets can be dissipated through the building cold water system and a heat transfer between the in-stallation area and the cabinets is avoided in a highly cost-saving manner.
As switch cabinets generally have an airtight construction, an air exchange between the cabinet interior and the installation area is avoided. Within the heat exchanger there can be local drops below the dew point and on using cooling water with a temperature below 12 C and/or a high atmospheric humidity in the installation area condensate is formed within the heat exchanger. This leads to a drop in the absolute atmospheric humidity within the switch cabinet, which can lead to damage to the installed modular units and systems.
It has been proposed (DE 10 2004 049 487.8) to keep stable the atmospheric humidity within the cabinet or the cooling air flow by a clearly defined external air supply. As a function of the ambient conditions and the target values in the cabinet leaks or interrup-tions are formed in the cabinet housing, which ensure a clearly defined external air sup-ply to the cabinet interior, particularly in the vicinity of a fan intake side. Through such an atmospheric humidity stabilization it is possible to avoid the disadvantages of con-densate formation and dehumidification below a preset value and in particular damage to the equipment and systems within the cabinet. However, devices are required for removing the condensate formed.
DE 298 23 784 U 1 discloses a cooling device for a switch cabinet having a condensate removal unit. The condensate is collected in a condensate collector and on reaching a presettable fill level activation takes place of a detector with a float switch. By means of a drain in the condensate tank and an outlet fine condensate is removed from the cool-ing device and switch cabinet.
3 Al describes a switch cabinet with an air conditioning device having a refrigeration circuit system with an evaporator and a condenser. The evaporator to-gether with a fan is integrated into an evaporator unit and is placed on the switch cabi-net, whereas the condenser with a fan is integrated into the condenser unit and is ar-ranged in spatially separated manner from the evaporator unit and switch cabinet, par-ticularly outside the switch cabinet installation area. This is intended to reduce the in-troduction of heat and the noise level in the switch cabinet instailation area, whilst lead-ing to an improved cooling of the cabinet interior and components located therein_ The evaporator unit has a condensate collector and a condensate evaporating device and the condensate produced on the evaporator is evaporated and removed to the outside with a fan.
In the case of the cooling device described in DE 198 17 247 Al the devices for leading off the condensate into the switch cabinet environment are avoided in that the conden-sate collected in a collecting device below the cooling device is evaporated with the aid of a collecting container and a heating element located therein.
The water vapour produced is transported away via the air flow in the cooling device and nothing is stated concerning a possible dehumidification of the cooling air flow. The known condensate evaporation is linked with a thermal energy supply, so that an in-creased air-heat exchanger cooling capacity is necessary.
The object of the invention is to provide a switch cabinet with a heat exchanger which, whilst avoiding condensate removal into the environment, ensures an extremely efficient cooling and atmospheric humidity stabilization in the switch cabinet.
According to the invention this object is achieved by the features of claim 1.
Advanta-geous and appropriate developments appear in the subclaims and the description rela-tive to the drawings.
l+, is a fundamental idea of the invention to collect condensate produced in a heat ex-changer in a collecting device and transform it into aerosols with the aid of an atomizing device which is positioned upstream of the heat exchanger in the switch cabinet, rela-tive to the flow direction of the air conveyed in a closed circuit and said aerosols are immediately resupplied to the recycled cooling air.
As the condensate produced, at least in a predeterminable quantity, is atomized to an ultrafine mist, particularly with an aerosol size <0.001 mm, there is no need to remove to the exterior of the switch cabinet_ At the same time a largely stable atmospheric hu-midity in the switch cabinet is ensured because the condensate formed is supplied to the atomizing device, atomized into condensate aerosols and immediately resupplied to the cooling air flow_ According to the invention the atomizing device is positioned upstream of the heat ex-changer, relative to the cooling air flow direction. The condensate aerosols then pass into the hot, dry exhaust air flow subject to the heat loss of the electronic modular units.
As a result of the high specific surface the condensate aerosols are immediately ab-sorbed by said hot, dry exhaust air flow and evaporate. As a result of the evaporation ii iere is an adiabatic cooling of the air flow. Thus, less energy is reyuired during the subsequent cooling of the exhaust air flow in the heat exchanger.
It is advantageous to provide as the atomizing device one or more ultrasonic vibrators or ultrasonic atomizers, which have no heat evolution and which are characterized by a limited size, pressureless atomization and a low energy demand.
In the case of the cooling device described in DE 198 17 247 Al the devices for leading off the condensate into the switch cabinet environment are avoided in that the conden-sate collected in a collecting device below the cooling device is evaporated with the aid of a collecting container and a heating element located therein.
The water vapour produced is transported away via the air flow in the cooling device and nothing is stated concerning a possible dehumidification of the cooling air flow. The known condensate evaporation is linked with a thermal energy supply, so that an in-creased air-heat exchanger cooling capacity is necessary.
The object of the invention is to provide a switch cabinet with a heat exchanger which, whilst avoiding condensate removal into the environment, ensures an extremely efficient cooling and atmospheric humidity stabilization in the switch cabinet.
According to the invention this object is achieved by the features of claim 1.
Advanta-geous and appropriate developments appear in the subclaims and the description rela-tive to the drawings.
l+, is a fundamental idea of the invention to collect condensate produced in a heat ex-changer in a collecting device and transform it into aerosols with the aid of an atomizing device which is positioned upstream of the heat exchanger in the switch cabinet, rela-tive to the flow direction of the air conveyed in a closed circuit and said aerosols are immediately resupplied to the recycled cooling air.
As the condensate produced, at least in a predeterminable quantity, is atomized to an ultrafine mist, particularly with an aerosol size <0.001 mm, there is no need to remove to the exterior of the switch cabinet_ At the same time a largely stable atmospheric hu-midity in the switch cabinet is ensured because the condensate formed is supplied to the atomizing device, atomized into condensate aerosols and immediately resupplied to the cooling air flow_ According to the invention the atomizing device is positioned upstream of the heat ex-changer, relative to the cooling air flow direction. The condensate aerosols then pass into the hot, dry exhaust air flow subject to the heat loss of the electronic modular units.
As a result of the high specific surface the condensate aerosols are immediately ab-sorbed by said hot, dry exhaust air flow and evaporate. As a result of the evaporation ii iere is an adiabatic cooling of the air flow. Thus, less energy is reyuired during the subsequent cooling of the exhaust air flow in the heat exchanger.
It is advantageous to provide as the atomizing device one or more ultrasonic vibrators or ultrasonic atomizers, which have no heat evolution and which are characterized by a limited size, pressureless atomization and a low energy demand.
It is particularly advantageous to use ultrasonic vibrators with a variable atomizing ca-pacity, so as to be able to ensure a predeterminable atmospheric humidity in the switch cabinet Appropriatefy the ultrasonic vibrators are located in a vibrating tank and are particularly fixed to the bottom of said tank. !n order to maintain a predeterminable liquid level over said bottom, a sensor, e.g_ a float switch can be provided_ The supply of condensate from the collecting device to the vibrating tank can take place with the aid of a condensate line using a pump. It is also possible to provide the collect-ing device with a bevel in the direction of the vibrating tank and to equip the latter with a correspondinq supply opening.
The ultrasonic vibrators can e.g. be piezoceramic vibrators, which have a frequency >20,000 Hz, or magnetostrictive vibrators with a frequency up to 200 Hz. Use can also be made of commercial ultrasonic atomizers with a piezoceramic element, an amplifier for the mechanical vibrations produced and an atomizer plate on which a condensate film of limited thickness is excited to capillary waves and very fine droplets are centri-fuged away in a corresponding trajectory. The liquid film is advantageously formed by a condensate quantity supplied in pressureless manner.
It is alternatively possible to provide a high pressure pump, particularly with a pressure of >50 bar for supplying the condensate produced to at least one high pressure nozzle, in which the condensate is atomized to a very fine mist. At least the high pressure noz-zle is again located in the area upstream of the heat exchanger, so that the fine con-densate mist is immediately absorbed by the dry, hot exhaust air and can rapidly evapo-rate. It is possible to use as high pressure nozzles e.g. those types known in conneG
tion with air humidification. Particularly small, rapidly evaporating condensate aerosols can be formed by an advantageous pulsating of the condensate flow.
The invention is described in greater detail hereinafter relative to the a{tached drawings, whereln show:
Fig. 1 A highly diagrammatic representation of a switch cabinet with an ultrasonic vibrator as the atomizing device_ Fig. 2 A highly diagrammatic representation of a switch cabinet with a high pressure nozzle as the atomizing device, The equipment cabinet 2 according to figs. 1 and 2 has an inner area 3 with vertically superimposed, electronic modular units 4. In the present example the electronic modu-lar units 4 are servers, which are in each case received in a housing with not shown air inlets and outlets and a fan 13.
The equipment cabinet 2 has a largely airtight construction and the heat loss of the electronic modular units 4 is dissipated with the aid of a heat exchanger 5, which is ad-vantageously constructed as an air-water heat exchanger with connection of the cooling water to the hLjilding cold water supply.
The bottom of the heat exchanger 5 is located in switch cabinet 2 and supply air 12 cooled therein is supplied to the individual modular units 4 by means of a supply air duct 26 in the vicinity of a front door 23. The exhaust air flows of the individual electronic modular units pass into an upwardly directed exhaust air flow 15 within a first exhaust air duct 14 and with the aid of at least one fan 21 positioned in the vicinity of a back door 22 are deflected into a second exhaust air duct 16. The downwardly directed ex-haust air flow 17 is supplied to heat exchanger 5.
Below heat exchanger 5 is positioned a condensate collecting tank 8, which in the em-bodiment according to fig. I is connected by a condensate line 19 to a vibrating tank 7.
With respect to the closed cooling air circuit, the vibrating tank 7 is positioned upstream of the heat exchanger 5, e.g. with approximately the same level as the condensate col-lecting tank 8, and is provided with at least one ultrasonic vibrator 10 as the atomizing device. The ultrasonic vibrator 10 has a high frequency generator 9, which extends into the area of a cabinet base 18.
When using a piezoceramic ultrasonic vibrator 10 located on the bottom of vibrating tank 7, the condensate above the same is vibrated by high frequency a.c.
voltage and the propagating u(trasonic waves bring about the atomization of the condensate, i.e. the release of very small liquid droplets or condensate aerosols.
Through the provision of the 7tC~fniziflg deVlce I V with 1 the uiirasoi 1ii vibr atii g tai 1n 7 the vicinity of the supply of the hot, dry exhaust air flow 17 to heat exchanger 5, the condensate aerosols are absorbed and evaporate adiabatically. Associated with this a cooling takes place and has an advantageous action on the necessary cooling capacity of heat exchanger 5. Simultaneously as a result of the condensate atomization the necessary atmospheric humidity of the air flow in switch cabinet 2 is ensured and dam-age associated with dehumidification to the installed modular units is avoided.
Fig. 2 shows an alternative atomizing device 20, which is once again positioned in the vicinity of the hot, dry exhaust air flow 17 supplied to heat exchanger 5. The further fea-tures of switch cabinet 2 are identical and consequently carry the same reference nu-merals.
A high pressure nozzle 20 is provided as the atomizing device 20 for the condensate collected in the condensate collecting tank 8. The condensate from the collecting tank 8 is supplied to high pressure nozzle 20 with the aid of a high pressure pump 25.
It falls within the scope of the invention to provide several high pressure nozzles 20.
In addition, the invention is not restricted to a switch, equipment or network cabinet with a heat exchanger at the bottom and instead covers further cooling devices with conden-sate production independently of the positioning thereof. it is e.g. possible to provide cooling devices having a refrigeration circuit equipped with an evaporator, a condenser and a compressor, with an atomizing device according to the invention.
The ultrasonic vibrators can e.g. be piezoceramic vibrators, which have a frequency >20,000 Hz, or magnetostrictive vibrators with a frequency up to 200 Hz. Use can also be made of commercial ultrasonic atomizers with a piezoceramic element, an amplifier for the mechanical vibrations produced and an atomizer plate on which a condensate film of limited thickness is excited to capillary waves and very fine droplets are centri-fuged away in a corresponding trajectory. The liquid film is advantageously formed by a condensate quantity supplied in pressureless manner.
It is alternatively possible to provide a high pressure pump, particularly with a pressure of >50 bar for supplying the condensate produced to at least one high pressure nozzle, in which the condensate is atomized to a very fine mist. At least the high pressure noz-zle is again located in the area upstream of the heat exchanger, so that the fine con-densate mist is immediately absorbed by the dry, hot exhaust air and can rapidly evapo-rate. It is possible to use as high pressure nozzles e.g. those types known in conneG
tion with air humidification. Particularly small, rapidly evaporating condensate aerosols can be formed by an advantageous pulsating of the condensate flow.
The invention is described in greater detail hereinafter relative to the a{tached drawings, whereln show:
Fig. 1 A highly diagrammatic representation of a switch cabinet with an ultrasonic vibrator as the atomizing device_ Fig. 2 A highly diagrammatic representation of a switch cabinet with a high pressure nozzle as the atomizing device, The equipment cabinet 2 according to figs. 1 and 2 has an inner area 3 with vertically superimposed, electronic modular units 4. In the present example the electronic modu-lar units 4 are servers, which are in each case received in a housing with not shown air inlets and outlets and a fan 13.
The equipment cabinet 2 has a largely airtight construction and the heat loss of the electronic modular units 4 is dissipated with the aid of a heat exchanger 5, which is ad-vantageously constructed as an air-water heat exchanger with connection of the cooling water to the hLjilding cold water supply.
The bottom of the heat exchanger 5 is located in switch cabinet 2 and supply air 12 cooled therein is supplied to the individual modular units 4 by means of a supply air duct 26 in the vicinity of a front door 23. The exhaust air flows of the individual electronic modular units pass into an upwardly directed exhaust air flow 15 within a first exhaust air duct 14 and with the aid of at least one fan 21 positioned in the vicinity of a back door 22 are deflected into a second exhaust air duct 16. The downwardly directed ex-haust air flow 17 is supplied to heat exchanger 5.
Below heat exchanger 5 is positioned a condensate collecting tank 8, which in the em-bodiment according to fig. I is connected by a condensate line 19 to a vibrating tank 7.
With respect to the closed cooling air circuit, the vibrating tank 7 is positioned upstream of the heat exchanger 5, e.g. with approximately the same level as the condensate col-lecting tank 8, and is provided with at least one ultrasonic vibrator 10 as the atomizing device. The ultrasonic vibrator 10 has a high frequency generator 9, which extends into the area of a cabinet base 18.
When using a piezoceramic ultrasonic vibrator 10 located on the bottom of vibrating tank 7, the condensate above the same is vibrated by high frequency a.c.
voltage and the propagating u(trasonic waves bring about the atomization of the condensate, i.e. the release of very small liquid droplets or condensate aerosols.
Through the provision of the 7tC~fniziflg deVlce I V with 1 the uiirasoi 1ii vibr atii g tai 1n 7 the vicinity of the supply of the hot, dry exhaust air flow 17 to heat exchanger 5, the condensate aerosols are absorbed and evaporate adiabatically. Associated with this a cooling takes place and has an advantageous action on the necessary cooling capacity of heat exchanger 5. Simultaneously as a result of the condensate atomization the necessary atmospheric humidity of the air flow in switch cabinet 2 is ensured and dam-age associated with dehumidification to the installed modular units is avoided.
Fig. 2 shows an alternative atomizing device 20, which is once again positioned in the vicinity of the hot, dry exhaust air flow 17 supplied to heat exchanger 5. The further fea-tures of switch cabinet 2 are identical and consequently carry the same reference nu-merals.
A high pressure nozzle 20 is provided as the atomizing device 20 for the condensate collected in the condensate collecting tank 8. The condensate from the collecting tank 8 is supplied to high pressure nozzle 20 with the aid of a high pressure pump 25.
It falls within the scope of the invention to provide several high pressure nozzles 20.
In addition, the invention is not restricted to a switch, equipment or network cabinet with a heat exchanger at the bottom and instead covers further cooling devices with conden-sate production independently of the positioning thereof. it is e.g. possible to provide cooling devices having a refrigeration circuit equipped with an evaporator, a condenser and a compressor, with an atomizing device according to the invention.
Claims (12)
1. Switch cabinet having an inner area (3) for receiving electronic modular units (4), a closed cooling air circuit, which has a heat exchanger (5) for dissipating the heat loss of the electronic modular units (4), and with a collecting device (8) for the condensate produced in heat exchanger (5), characterized in that an atomizing device (10, 20) for the condensate is provided which transforms the condensate into aerosols (9), the condensate aerosols (9) can be supplied to the cooling air circuit for stabilizing the atmospheric humidity in the switch cabinet (2) and the atomizing device (10, 20), relative to the flow direction of the cooling air circuit, is positioned upstream of the heat exchanger (5) and the condensate aerosols (9) can be received by hot, dry exhaust air flow (17) subject to the heat loss of the electronic modular units (4) and can be transformed into water vapour accompanied by an adiabatic cooling of the exhaust air flow (17).
2. Switch cabinet according to claim 1, characterized in that at least one ultrasonic vibrator (10) is provided as atomizing device.
3. Switch cabinet according to claim 1, characterized in that at least one high pressure nozzle (20) is provided as atomizing device.
4. Switch cabinet according to one of the preceding claims, characterized in that as collecting device (8) for the condensate a condensate collecting tank is placed below the heat exchanger (5) and a pump (11) and a condensate line (19) are pro-vided, which supply a predeterminable condensate quantity to atomizing device (10, 20).
5. Switch cabinet according to one of the preceding claims, characterized in that a vibrating tank (7) is provided for an ultrasonic vibrator as the atomizing device (10) and into which the condensate can be introduced from the collecting device (8).
6. Switch cabinet according to claim 5, characterized in that the condensate can be supplied to the vibrating tank (7) with the aid of a bevel, e.g.
a bevelled bottom of collecting device (8).
a bevelled bottom of collecting device (8).
7. Switch cabinet according to one of the preceding claims, characterized in that a piezoceramic ultrasonic vibrator with a frequency >20,000 Hz or a magnetostrictive ultrasonic vibrator with a frequency up to 200 Hz is used as atomizing device (10).
8. Switch cabinet according to one of the preceding claims, characterized in that a high pressure pump (25) is provided, which supplies condensate at a pressure >50 bar to a high pressure nozzle as atomizing device (20).
9. Switch cabinet according to one of the preceding claims, characterized in that the atomizing device (10) can be regulated as a function of the atmospheric humidity in the supply air flow (12).
10. Switch cabinet according to one of the preceding claims, characterized in that an overflow device is provided in the collecting device (8).
11. Switch cabinet according to one of the preceding claims, characterized in that as heat exchanger (5) is provided an air-water heat exchanger in the bottom area of the switch cabinet (2).
12. Cooling device for a switch cabinet with a closed cooling air circuit having a collect-ing device (8) for the condensate produced, characterized in that an atomizing device (10, 20) is provided for the condensate which transforms the lat-ter into aerosols, the condensate aerosols formed can be resupplied to the cooling air circuit for stabi-lizing the atmospheric humidity in the switch cabinet and the atomizing device (10, 20) is positioned upstream of the cooling device, relative to the flow direction of the cooling air circuit and the condensate aerosols (9) can be received by a hot, dry exhaust air flow (17) sub-ject to the heat loss of the electronic modular units (4) and can be transformed into water vapour accompanied by an adiabatic cooling of the exhaust air flow (17).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005005588A DE102005005588B4 (en) | 2005-02-07 | 2005-02-07 | switch cabinet |
| DE102005005588.5 | 2005-02-07 | ||
| PCT/EP2006/000063 WO2006081909A1 (en) | 2005-02-07 | 2006-01-05 | Switch cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2594499A1 true CA2594499A1 (en) | 2006-08-10 |
Family
ID=36570733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002594499A Abandoned CA2594499A1 (en) | 2005-02-07 | 2006-01-05 | Switch cabinet |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20090126385A1 (en) |
| EP (1) | EP1847163B1 (en) |
| JP (1) | JP2008530484A (en) |
| CN (1) | CN101138283B (en) |
| AT (1) | ATE389311T1 (en) |
| CA (1) | CA2594499A1 (en) |
| DE (2) | DE102005005588B4 (en) |
| RU (1) | RU2007128870A (en) |
| WO (1) | WO2006081909A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974438A (en) * | 2019-04-15 | 2019-07-05 | 韩春英 | A kind of efficient dehumidification device of electric power cabinet |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104024975B (en) * | 2011-11-03 | 2018-04-10 | 美国北卡罗来纳康普公司 | For the refrigerating module of modular data center and the system including the refrigerating module and at least one server module |
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| EP2663172A1 (en) | 2012-05-11 | 2013-11-13 | eCube Computing GmbH | Method for operating a data centre with efficient cooling means |
| CN102968889A (en) * | 2012-11-13 | 2013-03-13 | 大连东方电器制造有限公司 | Switch cabinet alarming device |
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| CN105020966A (en) * | 2014-04-18 | 2015-11-04 | 广州市穗凌电器有限公司 | Refrigerator defrosting water heat dissipation system |
| DE202014102525U1 (en) | 2014-05-28 | 2014-06-27 | Rittal Gmbh & Co. Kg | Device for dehumidifying the interior of an enclosure, in particular a control cabinet or a distribution cabinet |
| CN104460786A (en) * | 2014-10-31 | 2015-03-25 | 苏州佑瑞检测技术有限公司 | Switch cabinet condensate monitoring and processing method |
| US9861013B2 (en) | 2015-02-12 | 2018-01-02 | International Business Machines Corporation | Cooling system with integrated fill and drain pump |
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| CN106000758B (en) * | 2016-06-17 | 2018-08-31 | 石媛瑗 | It is a kind of can auto spray painting electrical equipment carry cabinet |
| CN107803868B (en) * | 2017-11-30 | 2019-06-11 | 拓卡奔马机电科技有限公司 | Temprature control method, device and the cutting cutting system of cutting cutting system |
| CN107732731B (en) * | 2017-12-13 | 2024-03-15 | 湖南埃尔凯电器有限公司 | Safety switch cabinet equipment |
| US10941961B2 (en) * | 2018-05-22 | 2021-03-09 | Johnson Controls Technology Company | Ultrasonic condensate management system and method |
| RU2719561C2 (en) * | 2018-08-09 | 2020-04-21 | Акционерное Общество "БЮРО ТЕХНИКИ" | Energy-efficient container-modular data processing centre |
| CN111817159B (en) * | 2020-06-29 | 2022-02-18 | 江山市鑫源电气有限公司 | Drainage type intelligent dehumidifying device |
| CN112186542B (en) * | 2020-10-19 | 2023-05-23 | 杭州璐欣电器制造有限公司 | Power distribution cabinet with good heat dissipation performance |
| CN113285359B (en) * | 2021-04-12 | 2022-05-13 | 京瑞恒诚电气(北京)股份有限公司 | Dampproofing and waterproofing looped netowrk cabinet suitable for it is outdoor |
| CN113241645A (en) * | 2021-06-10 | 2021-08-10 | 广东电网有限责任公司东莞供电局 | Novel moisture absorption device of transformer substation |
| CN113889877B (en) * | 2021-09-06 | 2024-07-30 | 临沂施乃通电气技术有限公司 | Low-voltage switch cabinet with good protection performance |
| CN113851989A (en) * | 2021-11-10 | 2021-12-28 | 江西伟德智能电气有限公司 | Can dampproofing radiating switch board |
| WO2023187920A1 (en) * | 2022-03-28 | 2023-10-05 | 日本電気株式会社 | Dew condensation drainage recovery device and cooling device |
| CN115568135B (en) * | 2022-09-29 | 2024-03-29 | 徐州云图信息技术有限公司 | Data storage connecting device for computer software development |
| CN117767157B (en) * | 2023-12-28 | 2024-06-04 | 江苏红华电气设备有限公司 | Heat pipe type heat dissipation device and method for electrical equipment |
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-
2005
- 2005-02-07 DE DE102005005588A patent/DE102005005588B4/en not_active Expired - Fee Related
-
2006
- 2006-01-05 WO PCT/EP2006/000063 patent/WO2006081909A1/en active IP Right Grant
- 2006-01-05 EP EP06706170A patent/EP1847163B1/en not_active Not-in-force
- 2006-01-05 RU RU2007128870/09A patent/RU2007128870A/en not_active Application Discontinuation
- 2006-01-05 CA CA002594499A patent/CA2594499A1/en not_active Abandoned
- 2006-01-05 AT AT06706170T patent/ATE389311T1/en not_active IP Right Cessation
- 2006-01-05 JP JP2007553487A patent/JP2008530484A/en not_active Withdrawn
- 2006-01-05 US US11/795,195 patent/US20090126385A1/en not_active Abandoned
- 2006-01-05 DE DE502006000459T patent/DE502006000459D1/en not_active Expired - Fee Related
- 2006-01-05 CN CN2006800042192A patent/CN101138283B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974438A (en) * | 2019-04-15 | 2019-07-05 | 韩春英 | A kind of efficient dehumidification device of electric power cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1847163B1 (en) | 2008-03-12 |
| DE102005005588A1 (en) | 2006-08-10 |
| US20090126385A1 (en) | 2009-05-21 |
| CN101138283A (en) | 2008-03-05 |
| DE102005005588B4 (en) | 2008-03-13 |
| ATE389311T1 (en) | 2008-03-15 |
| DE502006000459D1 (en) | 2008-04-24 |
| RU2007128870A (en) | 2009-03-20 |
| JP2008530484A (en) | 2008-08-07 |
| CN101138283B (en) | 2010-08-18 |
| WO2006081909A1 (en) | 2006-08-10 |
| EP1847163A1 (en) | 2007-10-24 |
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Legal Events
| Date | Code | Title | Description |
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| FZDE | Discontinued |