SE441889B

SE441889B - Device for cooling of electrical equipment enclosed in a chamber-based in the ground

Info

Publication number: SE441889B
Application number: SE8402820A
Authority: SE
Inventors: Ewald Arvidsson
Original assignee: Arvidsson E
Priority date: 1984-05-25
Filing date: 1984-05-25
Publication date: 1985-11-11
Also published as: SE8402820D0

Abstract

Overheating of computers and other electrical equipment is a common problem, which as a rule is solved through ventilation. If equipment is buried in the ground this is not possible. The following invention refers to a device for cooling of electrical equipment (1) connected in an earth-based chamber (2). The device comprises a closed circulation for coolant fluid comprised of cavities (4, 8) in or around the cabinet of the chamber (2), in good heat-conducting contact with this and a pipe or hose coil (7) through the fluid around the chamber (2). The circulation is further constructed so that the coolant fluid is propelled around through self-circulation under influence of the heat from the chamber (2) and cooling in the coil (7) in the ground.<IMAGE>

Description

l0282Û-8 2 REDOGÖRELSE FÖR UPPFINNINGEN TEKNISKT PROBLEM Det finns behov av en anordning för att kyla elektrisk utrustning innesluten i en icke ventilerad, i marken förlagd kammare, vilken anordning dels har låg energiförbrukning dels är driftsäker. DESCRIPTION OF THE INVENTION TECHNICAL PROBLEM There is a need for a device for cooling electrical equipment enclosed in a non-ventilated, grounded chamber, which device has low energy consumption and is reliable.

LÖSNINGEN Detta problem löses vid uppfinningen genom att denna får den ut- formning som framgår av de efterföljande patentkraven.THE SOLUTION This problem is solved in the invention in that it has the design which appears from the following claims.

FÖRDELAR Förutom att energibehovet för kylningen blir litet, under stor del av tiden obefintligt, blir driftsäkerheten stor, då rörliga delar såsom pumpar och fläktar har undvikits. koRi FIGURBESKRIVNING i För närvarande föreslagen utföringsform uppvisande de för uppfin- ningen signifikativa kännetecknen kommer i det följande att be- skrivas med hänvisning till bifogade ritning där, figur 1 visar vertikalsnitt A - A, B - B genom kammaren med schematiskt ritade kretskort, figur 2 visar ett vertikalsnitt C - C genom kammaren, figur 3 visar ett horisontalsnitt D - D genom kammaren, figur 4 visar kammaren sedd utifrån ett vertikalplan E - E, figur 5 visar kammaren sedd utifrån ett vertikalplan F - F, figur 6 visar kanmare och slang schematiskt i ett verti- kalsnitt G - G, figur 7 visar kammaren utförd med dubbla väggar i ett 3 8402820-s vertikaisnitt H - H, figur 8 visar kammaren utförd med dubbia väggar i ett vertikaisnitt I - I, figur 9 visar kammaren utförd med dubbla väggar i ett horisonta1snitt J - J, figur 10 visar kanmaren schematiskt med två siangar i ver- tikaisnitt K - K, figur 11 visar kammaren i ett vertikaïsnitt L - L, figur 12 visar kammaren i ett vertikaïsnitt M - M, figur 13 visar kammaren i ett horisontaisnitt N - N, BESKRIVNING AV FÖRESLAGNA UTFÜRINGSFDRMEN Den eïektriska utrustningen symboiiseras av kretskort 1, viika är placerade i en kammare 2, som är nedgrävd i marken. Uppåt avgrän- sas kammaren av ett ïock 3.ADVANTAGES In addition to the fact that the energy requirement for cooling is small, non-existent for a large part of the time, operational reliability is high, as moving parts such as pumps and fans have been avoided. KORI DESCRIPTION OF THE DRAWINGS In the presently proposed embodiment showing the features significant to the invention will be described in the following with reference to the accompanying drawing where, Figure 1 shows vertical sections A - A, B - B through the chamber with schematically drawn circuit boards, Figure 2 shows a vertical section C - C through the chamber, figure 3 shows a horizontal section D - D through the chamber, figure 4 shows the chamber seen from a vertical plane E - E, figure 5 shows the chamber seen from a vertical plane F - F, figure 6 shows the chamber and hose schematically in a vertical section G - G, figure 7 shows the chamber made with double walls in a vertical section H - H, figure 8 shows the chamber made with double walls in a vertical section I - I, figure 9 shows the chamber made with double walls in a horizontal section J - J, figure 10 shows the chamber schematically with two sieves in vertical section K - K, figure 11 shows the chamber in a vertical section L - L, figure 12 shows the chamber in a vertical section Sections M - M, Figure 13 shows the chamber in a horizontal section N - N, DESCRIPTION OF THE PROPOSED EMBODIMENT The electrical equipment is symbolized by circuit board 1, which is located in a chamber 2, which is buried in the ground. Upwards, the chamber is delimited by a ïock 3.

I fig 4-6 visas en utföringsform av uppfinningen med ett första kretsiopp för kyifiuidum. Krets1oppet består av ett rör 4 som iöper runt kammarens väggar och via stos 5 1eder kyifiuidet tiil en siangsiinga 7 i den omkringiiggande marken. Via en stos 6 ieds fiuidet ti11 röret 4. Det är naturïigtvis även möjiigt att röret 4 iigger i kanmarens 2 vägg eiier i kammaren. I en ändamåsenïig utföringsform av uppfinningen ïeds kyifiuidet genom kammarens 2 väggar. De är utförda som dubbia väggar med ett utrymme, en spa1t, 8 meiian väggarna, i viiket kyifïuidet ïeds. Vidare kan istäiïet för en s1ang 7 också ett rör användas.Figs. 4-6 show an embodiment of the invention with a first circuit for cooling fluid. The circuit consists of a tube 4 which opens around the walls of the chamber and via the socket 5 leads to the connection 7 to a ground 7 in the surrounding ground. Via a socket 6 the fluid 4 leads to the tube 4. It is of course also possible for the tube 4 to lie in the wall of the chamber 2 or in the chamber. In an expedient embodiment of the invention, the fluid flows through the walls of the chamber 2. They are designed as double walls with a space, a spa1t, 8 meiian walls, in viiket kyifïuidet ïeds. Furthermore, instead of a tube 7, a tube can also be used.

Genom uppvärmningen av fiuidet från den eïektriska utrustningen i kammaren och kyiningen från marken i sïingan drivs fiuidet runt i kretsioppet genom sjäivcirkuïation och kyier därvid den eïektriska utrustningen. 8402820-8 4 I figurerna 7-10 visas en utföringsform av uppfinningen där för- utom ett_första kretslopp för kylfluidum också ett andra kommer till användning. Det andra kretsloppet kan vara skilt från det första men kan men fördel vara förenat med detta genom att ha sammanfallande håligheter för kylfluidet i eller runt kammarens hölje. På ovan angivet sätt kan håligheterna vara utformade som rör runt väggarna eller som en spalt mellan dubbla väggar. I figu- rerna 7-9 visas dubbla väggar med en spalt 8 däremellan. Från kammaren går således förutom den första rör- eller slangslingan 7 en andra slinga 15 via stos 16.By heating the fluid from the electrical equipment in the chamber and cooling it from the ground in the circuit, the fluid is driven around the circuit through self-circulation and thereby cooling the electrical equipment. Figures 7-10 show an embodiment of the invention where, in addition to a first cooling fluid circuit, a second one is also used. The second circuit may be separate from the first but may advantageously be associated with this by having coincident cavities for the cooling fluid in or around the housing of the chamber. In the manner indicated above, the cavities can be designed as pipes around the walls or as a gap between double walls. Figures 7-9 show double walls with a gap 8 in between. Thus, in addition to the first pipe or hose loop 7, a second loop 15 passes from the chamber via socket 16.

För att öka och reglera cirkulationen i den andra slingan 15 finns i en lågt liggande del av kretsloppet i eller vid kammaren en reglerbar uppvärmningsanordning 21, som gör att trycket och flö- deshastigheten ökas. Vidare är den del 22 av kretsloppet, som ligger efter uppvärmningsanordningen i flödets riktning och är belägen i eller runt kanmaren, isolerad från kammaren.In order to increase and regulate the circulation in the second loop 15, there is a controllable heating device 21 in a low-lying part of the circuit in or near the chamber, which increases the pressure and the flow rate. Furthermore, the part 22 of the circuit which lies behind the heating device in the direction of flow and is located in or around the chamber, is isolated from the chamber.

För att öka den kylande ytan är det lämpligt att låta fluidet i det andra kretsloppet efter att ha passerat slingan 15, ledas genom kylradiatorer 17 och 18 i kammaren, företrädesvis placerade i dess bottenregion och därpå till den gemensamma spalten 8 via rör 19 och 20.To increase the cooling surface, it is convenient to allow the fluid in the second circuit after passing the loop 15, to be passed through cooling radiators 17 and 18 in the chamber, preferably located in its bottom region and then to the common gap 8 via pipes 19 and 20.

Effekten kan ytterligare förbättras genom att låta det uppvärmda fluidet efter att ha värmts i spalten 8 i kammarens 2 vägg eller alternativt i en omsvepande rörslinga 4 gå in i kammaren i ett rör 9 högt uppe på en vägg, gå ner längs väggen i ett U-format rör 10, vars nedåtgående del kallas 11 gå tvärs över bottnen i ett rör 12 under och mellan kylradiatorerna 17 och 18 och upp längs den mot- stående väggen i ett rör 13 för att slutligen lämna kammaren i ett rör 14 som passerar tvärs genom kammarens vägg. Den ovannämnda uppvärmningsanordningen i det andra kretsloppet placeras i denna utföringsform av uppfinningen vid det uppåtgående röret 13. Genom det varma röret kommer luftrörelsen mellan kylradiatorerna 17 och 18 vid behållarens botten att påverkas fördelaktigt och effektivi- teten öka.The effect can be further improved by letting the heated fluid, after being heated in the gap 8 in the wall of the chamber 2 or alternatively in a wrapping pipe loop 4, enter the chamber in a tube 9 high up on a wall, go down along the wall in a U- formed pipe 10, the downward portion of which is called 11 going across the bottom of a pipe 12 below and between the cooling radiators 17 and 18 and up along the opposite wall of a pipe 13 to finally leave the chamber in a pipe 14 passing across the chamber. wall. The above-mentioned heating device in the second circuit is placed in this embodiment of the invention at the ascending pipe 13. Through the hot pipe the air movement between the cooling radiators 17 and 18 at the bottom of the container will be advantageously affected and the efficiency increased.

I ett ytterligare steg förses behållaren med ett värmerör utformat som en horisontal ring eller böj 23 med ett nedåtriktat rör 24 5 8402820-8 med försiuten ända. Genom att förånga ett fiuidum i värmerörets nedre deL 24 och 1åta det kondensera i den horisonteiïa de1en 23 kommer det kyia denna de1, som har den högsta temperaturen. Därpå rinner fïuidet ner i den nedåtriktade de1en 24 och processen fort- sätter. Därmed erhåiles en temperaturutjämning me11an högt och ïågt ïiggande deïar i kanmaren. Uppvärmningen sker med en uppvärm- ningsanordning, 1ämp1igen samma uppvärmningsanordning 21 som an- vänds i det andra kretsïoppet. Härigenom erhå11es med ett minimum av de1ar en mycket god verkan. Uppvärmningsanordningen 21 kan vara ett Munter-kyiskåps varma dei varvid den kyïande de1en sättes så högt som möjiigt i kammaren.In a further step, the container is provided with a heating tube designed as a horizontal ring or bend 23 with a downwardly directed tube 24 with the front end fitted. By evaporating a fluid in the lower part 24 of the heating tube and allowing it to condense in the horizontal part 23, it will cool this part which has the highest temperature. Then the fluid flows down into the downward part 24 and the process continues. Thereby a temperature equalization is obtained between high and slightly lying parts of the canary. The heating takes place with a heating device, preferably the same heating device 21 as is used in the second circuit. In this way a very good effect is obtained with a minimum of parts. The heating device 21 may be a hot day of a Munter refrigerator, the cooling part being set as high as possible in the chamber.

De senare stegen i utrustningen tas automatiskt i drift i succes- sivt ökande grad aiïteftersom temperaturen ökar i kammaren.The later stages of the equipment are automatically put into operation to a gradually increasing degree as the temperature in the chamber increases.

I normaifaiïet kommer i Sverige kyïning med hjäïp av det första kretsïoppet med sjäïvcirkuiation att vara ti1lfy11est. I specieïia fa11, specieïit om marken är torr kan det b1i aktue11t med det andra kretsioppet och ett eventue11t värmerör.In the normaifaiïet, in Sweden kyïning with the help of the first circuit with sjäïvcircuiation will be ti1lfy11est. In specieïia fa11, specieïit if the ground is dry it may b1i aktue11t with the second circuit opening and an eventue11t heating pipe.

Under varmare förhåiianden exempeivis vid förläggning av kammare i varm ökensand kommer den ytteriigare utrustningen att vara nödvän- dig.During warmer conditions, for example when placing chambers in warm desert sand, the additional equipment will be necessary.

Claims

1. m 2 8 2 QñåiTkR / iv 6 1 Device for cooling electrical equipment (1) housed in a chamber located in the ground, comprising a first circuit for cooling fluid consisting of cavities (4, 8) in or around the height of the chamber (2), in good heat-conducting contact with this and a pipe or pipe (7) through the ground outside the chamber, the circuit being designed for self-circulation under the influence of the heating from the chamber (2) and the cooling in the pipe (7) in the ground, characterized in that it comprises a second circuit for kyïfïuidum consisting of cavities (4, 8) in or around the height of the chamber (2), in good thermal contact therewith, the cavities may be the same as in the first circuit or separate cavities , and a second tube or tube (15) through the ground outside the chamber, in that the second circuit is provided with a controllable heating device (21) in a slightly horizontal portion of the chamber (2), and in that it de) (22) of the a The second circuit, which lies behind the heating device (21) in the direction of the feed and is located in or around the canary (2), is isolated from it.

Device according to claim 1, characterized in that in the second circuit the tube or tube (15) flows from the surrounding ground to large radiators (17, 18) in the chamber (2), preferably in its bottom region, and then the cavities (4, 8) in eïïs around the chamber (2).

Device according to claim 2, characterized in that in the second circuit a U-shaped tube (10) travels from the heights in or around the chamber down along the inside of a wall in the chamber, further along the bottom, below and between two 7 Cooling radiators (17, 18), and then up along the opposite wall and then out of the chamber, the heating device (21) being located next to and acting on the upward pipe leg (13).

Device according to one of the preceding claims, characterized in that a heating tube (23) is arranged in the upper part of the canister, provided with a downwardly extending tube (24), which is located next to a heating device, whereby under the influence of supplied heat in the downward tube (24) a fluid is evaporated to then condense in the upper part of the heating tube (23) and thereby cool the surrounding equipment.

Device according to claim 4, characterized in that the same heating device (21) acts on both the second circuit and the downward tube (24) of the heating tube.

Device according to one of the preceding claims, characterized in that the cavities in or around the chamber (2) are in the form of a slit-shaped space (8) around the entire chamber except the lid (3), in that the chamber ( 2) is made with double walls.

Device according to one of the preceding claims, characterized in that the cavities in or around the chamber (2) are in the form of a tube (4) which is attached to the chamber, but not the lid (3). ), outer mantle surface.