DE2013549B2 - BOILER COOLING DEVICE FOR A MAGNETRON - Google Patents

Description

• Avoid chluOsials, the prechpunki that RMierlwltsvcntile set a lower value «Divides so it must be expected that the gc heus valve will already operate with normal uberla.tzu.tHn-Xn that addresses more frequently and possibly also 5

Longer periods can occur, in which case larger quantities of coolant vapor are drained off via the safety valve under certain circumstances; This not only has a reduction in the cooling efficiency due to the reduction in the coolant _{reverberation} in the circuit, especially when there is an increased cooling capacity requirement, but also requires, above all, an ongoing over _{w: 1L} : _luing and thus maintenance of the system to sufficient, - sufficient amount of cooling liquid.

C _Di invention relates to such Siedek.ühlvor- t ₅ direction with pressure-tight cooling circuit. The invention is intended to avoid the disadvantages of the known evaporative cooling devices described above and to provide a cooling device which is optimally simplified in its structure, is safe and does not require any maintenance over the entire service life and which enables effective, trouble-free cooling is ensured that one adjustable maximum operating temperature does not ^ dSeSeckistbeieinerSiedekühlvorrichtung of the type mentioned intended "according to the invention, that the cooling circuit is hermetically abgesch variables and is under negative pressure.

The cooling device according to the invention has a number compared to the known devices of advantages on:

About the air cooling mentioned at the beginning it enables the achievement of a better thermvscl.cn Efficiency, while at the same time the

the system reliable; and J ^^ perceived, will be. Duah d * Lmju fc given UntuidrucK mi ^ -u "that the Μγ ™» <™ ^% * η normal pressure pressure and all enfaUs ^ "J ^ JpJud« ng the processing, the FesUgU tsbeansprucnung _en _

lage be, ^^^ X ^^ nAbtMuu des zen ^ fetched. _f Durchlütj Nerro _uhlmiue Unhalt the cow au circle remains dabe the KMm ^l _MPACT Kuhlkreis aufe jnd dam "the J

also with "^^ ^5. ^;" ff? _e "^ _ar kie goes along with this cool eel. ^ jA uwk" u even ^ e by the opt m ^ '^ _{kej, The By J} "Building ^e ™ ^e". *? "" _dnun "guaranteed off

& * Φ ™ ^η ™ Γ, ίΐ, Γ Circulation of the coolant finally natural. ^ nw ζ g ^^

mach1 ^ £ ^bewe 8 ^1C ^ ^ S _ermetic conclusion dispensable ^ r ^ HsUnd.g ^

of ^ ^ hlkre barrel ■ ^ J ^{1 au} _ ^ü _{d else} ^J j valves, driving, via horseshoe ^^^ ,. "gen dispensable -leiiunger.und ^ h ^e;. .- uvomcm g ^ ^

the otherwise provided ^ optimal

Afhtt ^^ _to

one reached

trnnVd-irstell
trons there

^ 5 _{tet and} degassed. any liquid ^ evaporation temperature

_Good operation of the Magnccn would make the liquid too incapable of its "preferably can be distilled oil, which is not only cheap

Furthermore, safety devices that respond to the failure of the water supply are superfluous ^ cnover _{the known} boiling cooling devices * before the invention generally results in the advantage of extreme structural simplification with simultaneously high operational reliability and complete maintenance freedom. Especially compared to the Siedckuhlcinnchung known from the German patent specification 752 528 with pressure-tight cooling circuit and overpressure operation with safety valve, a considerable additional safety margin with regard to the stress on the system at ^^ rlas.zusUmden is achieved :; As a result, flour can only be built up on a given (-her a ^ ndmit ueringercr I-estigkit and then more easily and less, but in particular the completely hermetic closure of the cooling circuit is made possible, in such a way that the cooling circuit is already on the hester side with a predetermined Kf ^ eff ^ g , which remains the same over the entire service life, and is also under negative pressure _{with one above the under D g}

er Atm ^ _{h () her a} , _{s m c is>}

will ' ⁿ " ¹ J fjf _vo ^P _{n Magnet} rons by no means something to the KuhUii ^ j ^ ^ . ^ _{n ßc} .

tread J ⁸¹ J jJocn _{jst dc5tillicrtes} water

50 nebJ ^ ^td "" ⁿ _{t, Step Example} i _sw, ise the froze _at ^P ^^ _se hr low temperatures _{of the} I _Oerätes occur conj _{can dcm} üh'wasser _K and? _r hi _"L n-ren and Flüsigkeit with the same on-55 ^ ^ ^ AES Gefrie'rschutzfiüssigkei, (AI-g-rK. c ^ ne ι * are added without

^^^, ^ _ik ! _T cooling device excessive

affect ^ cm *. the drawing

60th "^ TJJj _e ine preferred embodiment

w ^ ^ SSiSn cooling device explained in more detail

the emnau g ζ magnetron 10

Sit around which a container 1 is arranged, the ste It "", ^, HUesiiekeit S is filled, the evaporation

■ by means of two risers 2 and 4 with the two Ends of a line 3 connected, with its cooling fins 6 a static condenser 7 with natural Ventilation forms. The container 1, the riser 2, the condenser? and the riser 4 thus form a completely closed circuit, preferably under vacuum.

During operation, the heat generated by the magnetron causes the cooling liquid 5 to evaporate (preferably distilled water under vacuum and only in the presence of its own steam). The steam rises in the riser 2 (arrow A) and arrives according to arrow B in the condenser 7, in which it condenses and returns to the liquid state. The drops formed by the condensation flow down the line 4 (arrow C) and get back into the container 1, in which they mix with the liquid 5. This results in a natural circulation through which the cooling liquid contained in the container i is continuously renewed, whereby the desired cooling effect can be exerted on the magnetron.

1 sheet of drawings

Claims (3)

I 2 because of this connection to the water supply network of the claims: The scope of the magnetron is fundamentally restricted. In addition, 1. Evaporative cooling device for a magnetron, the cooling chamber of the magnetron limescale deposits ordering from a pressure-tight cooling circuit with 5, which reduce the cooling effect. Further one arranged around the magnetron, one also require these cooling systems because of the need for steam Coolant containing coolant of an inlet valve and necessary safety container and one above the same arrangement means for interrupting the operation Neten condenser, thereby identified in the event of a failure of the water supply shows that the cooling circuit is hermetically sealed, a relatively complicated and expensive one is closed and under negative pressure. and failure-prone structure. 2. Evaporative cooling device according to claim 1, there are already cooling devices for high-through characterized in that the vaporizable power electron tubes and electric discharge cooling liquid is vented and degassed. known as so-called boiling cooling devices 3. Evaporative cooling device according to Anöpiuch /, that 15 lines are formed and in which a cooling through characterized in that as a vaporizable liquid in one with the device to be cooled device cooling liquid distilled water with a part that is thermally conductive Freezing agent additive is used. Container due to the heat to be dissipated in part evaporated, the steam liquefied again in a condenser and the liquid in the circuit steam tank is supplied again. From the German Auslegeschrift 1 002 893 a boiling cooling device of this type is known from The invention relates to a evaporative cooling device, a cooling pot surrounding the anode, a pressure-tight container surrounding a magnetron, a vapor discharge cooling circuit with a pipe arranged around the magnetron, a water separator and a condenser, an evaporable cooling liquid consists, with a running fresh water supply the cooling container and one above the same. "is provided.
arranged capacitor. From the German patent specification 752 528 is one Magnetrons are increasingly being used 30 Siedekühlvorricntitng known, as heating elements, for example in tumble dryers> which has a cooling water tank, a condenser and other household and other common utensils as well as a further vessel that is advisable. As is known, such magnetrons require a siphon pipe, through which, when connected, cooling is used to remove the losses. ' mg of the dimension of the system air escapes; after an alternative gnetron. Particularly with regard to the previous configuration, provision can also be made for the expansion of the application system indicated in the upright position to be pressure-tight and for magnetrons to be operated with overpressure areas, in which case the capacitor is designed and built in Operation simple and provided with a safety valve,
cheap, trouble-free and low-maintenance cooling devices direction. 40 is an effective cooling, but you are in For the cooling of electrical discharge vessels their structure is still relatively complex and high-performance electron tubes including zxert and require that the cooling circuit m ^; The magnetrons are inherently different systems and the ambient atmosphere is connected and known. is not completely self-contained, one The air cooling, in which usually with the help of 45 a certain maintenance effort, since the compliance with the of a fan, a flow of cooling air against the level of netron required for optimal cooling surrounding and with this in intimate warmth gene. In particular a sufficient cooling liquid line connection standing cooling fins blown over the course of the service life, besides the requirement of a special one, has to be watched. This also applies to the one mentioned Fan has the disadvantage that a safety shut-off 50 is known from German patent specification 752 528 processing of the magnetron in the event of a malfunction of the execution of the evaporative cooling device with pressure-tight Fan must be provided. whereby the trained cooling circuit, as this is a work plant Both in structure and in operation, if there is overpressure with a safety valve, it is relatively proportionate becomes complicated and expensive and one is seen. Becomes the point of contact for the security officer Maintenance needed. To prevent the valve from being exposed to a relatively high overpressure the cooling fins are adjusted with dust in the course of operation in order to avoid that with normal overload conditions must cover, appropriate air ducts associated with the magnetron increased heat build-up Filters are provided, »as a further complication without the safety valve responding · - and decoration means. the resulting draining of coolant Circulating water cooling, such as that taken from 60, for example, this implies a corresponding! On the German patent specification 1006 532 are known, maneuverable and heavy construction of the entire cooling process Which cooling water that is supplied via an inlet valve, including in particular the critical direction for example taken from the water pipe connection connection between cooling container, connection is made, by a cooling line and condenser surrounding the magnetron, in such a way that jacket circulates, have the main disadvantage that 65 the entire system is one for the above-mentioned agreement permanent connection of the device to the water pressure has sufficient strength. Will diversion network is required, whereby not only the reverse, in order to arrive at a lighter design and Settling of the device are made more difficult, but critical loads, in particular the