SE123729C1

SE123729C1 -

Info

Publication number: SE123729C1
Authority: SE
Publication date: 1948-01-01

Description

Uppfinnare: G. Hoist och H. Rinia. Inventors: G. Hoist and H. Rinia.

Prioritet begiird frdri den 30 oktober 1941 ltiederltinderna). Priority requested before 30 October 1941 ltiederltinderna).

Vid konstruktionen av varnagasmotorer har I allmanhet ringa hansyn tagits till det varpa varme overawes frau energikallan till den for uppvarmning avsedda delen av motorn, vilken del i det foljande benarnnes uppvarmningsanordningen. Vid varmluftmotorer är det brukligt att lata de fran en brannare eller en eldstad kommande forbranningsgaserna stryka over uppvarmningsanordningens vaggar, varigenom den av uppvarmningsanordningen upptagna viirmemangden blir relativt liten. Med varmgasmotor avses har en motor, som ar forsedd med ett varmt rum och ett kallt rum, vilka std i forbindelse rued varandra, varvid arbetsmedlet befinner sig omvaxlande i det varma och det kalla rummet och varvid anordningen är sadan, att det varma medlet under sin expansion far tillfalle att avgiva arbete till en kolv eller dylikt. In the construction of warning gas engines, little attention has been paid to the warp heat from the energy source to the heating part of the engine, which part of the heating device of the following legs. In the case of hot air engines, it is customary to allow the combustion gases coming from a burner or a fireplace to be stroked over the cradles of the heating device, whereby the amount of heat absorbed by the heating device becomes relatively small. By hot gas engine is meant an engine provided with a hot room and a cold room, which are connected to each other, the working means being alternately in the hot and the cold room and the device being such that the hot means during its expansion may occur to deliver work to a piston or the like.

Det är ett kant faktum, att en varmgasmotors nyttiga effekt Ras med den maximala temperaturen hos det i motorn arbetande medlet. En hOgre temperatur hos detta medel erfordrar, i synnerhet om temperaturen Overstiger c:a 400° C, ett temperaturbestandigt material for uppvarmningsanordningens vaggar, vilket material i regel utgores av legerade stalsorter. Anvandandet av varmebestandigt material for uppvarmningsanordningens vaggar okar emellertid varmemotstandet mellan forbranningsgaserna, vilka skola avgiva varme till uppvarmningsanordningens vaggar, och arbetsmedlet, som erhaller varme genorn uppvarmningsanordningens vaggar. Varmemotstandets oknhig inverkar givetvis menligt pa varmeoverforingen. It is an edge fact that the useful power of a hot gas engine is driven by the maximum temperature of the agent operating in the engine. A higher temperature of this agent requires, especially if the temperature exceeds about 400 ° C, a temperature-resistant material for the cradles of the heating device, which material is usually alloyed steel. However, the use of heat-resistant material for the cradles of the heating device increases the heat resistance between the combustion gases, which are to give off heat to the cradles of the heating device, and the working means which receives heat through the cradles of the heating device. The heat resistance of the heat resistor obviously has a detrimental effect on the heat transfer.

FOreliggande uppfinning hanfor sig till ett salt .att driva en varmgasmotor, innefattande ett varmt rum och ett kallt ruin, vilka rum sta i forbindelse med varandra och mellan vilka arbetsmedlet strommar fram och tillbaka, varvid varme tillfores arbetsmedlet genom en vagg i motorns varma del. Uppfinningen kannetecknas vasentligen darav, att en for uppyarmning av arbetsmedlet avsedd varmekalla indirekt uppvarmer ett darvid helt eller delvis I angform Overgaende,•varmetransporterande medel i form av en rnetall, metallegering eller ett metallsalt, som bringas att under hel eller partiell :tivergang till vatskeform avgiva -Orme i beroring med namnda vagg i motorns varma del. The present invention relates to a salt for driving a hot gas engine, comprising a hot room and a cold ruin, which rooms are in communication with each other and between which the working means flows back and forth, heat being supplied to the working means through a cradle in the hot part of the engine. The invention is essentially characterized in that a heating cold intended for heating the working medium indirectly heats a thereby wholly or partly in the form of Transient, heat-transporting means in the form of a metal, metal alloy or a metal salt, which is caused to give off during whole or partial transition to liquid form. -Worm in contact with the said cradle in the warm part of the engine.

Det har tidigare fiireslagits att uppviirma arbetsmedlet for en varmgasmotor i en pa avstand fran motorn belagen, separat varmevaxlare med hjalp av ett varmetransporterande medel, varvid arbetsmedlet genom sarskilda lcdningar fores frhn motorn till varinevhx1aren och tillbaka. Detta kanda uppvarnmingssatt iir emellertid forenat med en stor Olagenhet. Vid varmgasmotorer utgor som bekant uppvarmningsanordningen en del av det skadliga rummet i motorn, varf Or densammas volym bOr yam sa liten som mojligt for att det skadliga rummets volym skall kunna reduce-ms till ett minimum. Vid den ovan angivna. kanda anordningen okas nu det skadliga rum-met i motorcylindern med volymen hos de bada ledningarna, vilka forbinda motorn med varmevaxlaren, och med volymen has den rorslinga i varmevaxlaren, genom vilken det f Or uppyarnming avsedda arbetsmedlet strain-mar. Harigenom erhalles ett totalt skadligt rum av sadan storlek, att nagon namnvard kompression av arbetsmedlet icke kan uppnas och till MIA darav icke heller flagon namnyard nyttig effelit. Denna olagenhet elimineras helt genom sattet enligt foreliggande uppfinning, dar det varmetransporterande medlet bringas att avgiva vanne i beroring med en vagg i motorns varma del, varigenom uppvarmningsanordningens volym icke behover Ras pa grund av sarskilda ledningar och dylikt och det 'totala skadliga rummet salunda kan hallas mom tillatna granser. It has previously been proposed to heat the working means of a hot gas engine at a separate heat exchanger located at the distance from the engine, with the aid of a heat transporting means, the working means being carried from the engine to the heat exchanger and back by special charges. However, this heating method can be combined with a large inertia. In the case of hot gas engines, as is well known, the heating device forms part of the harmful space in the engine, the volume of which must be as small as possible in order for the volume of the harmful space to be reduced to a minimum. At the above. The device now increases the harmful space in the engine cylinder by the volume of the two lines which connect the engine to the heat exchanger, and by volume is the rudder loop in the heat exchanger through which the working means intended for heating is strained. As a result, a totally harmful room of such a size is obtained that no nominal compression of the working medium can be achieved and for MIA hence no flagon name yard useful effelite. This inconvenience is completely eliminated by the method of the present invention, where the heat-transporting means is brought to release water in contact with a cradle in the hot part of the engine, whereby the volume of the heating device does not need to be disrupted due to special wires and the like. mom allowed borders.

Pa bifogade ritning visas schematiskt en varmgasmotor, vid vilken sattet enligt uppfinningen är tillampat. The accompanying drawing schematically shows a hot gas engine, to which the method according to the invention is applied.

Pa ritningen betecknar 1 motorcylindern, 2 fOrtrangarkolven och 3 arbetskolven. Motorns arbetsmedel striimmar pa kant satt fram och tillbaka mellan motorns ovre varma del och 2— — undre kalla del, yarvid arhetsmedlet passerar genom uppviirmningsanordningen 4, regeneratorn 5 och kylaren 6. I uppylirmningsanordningen 4 tillfores arbetsmedlet varme indirekt fran en yttre yOrmeklilla i form av en brannare 10 eller dvlikt, som upphettar en behallare 9 for det varmetransporterande medlet, vilket cirkulerar genom en ledning 7, en pump 8, behallaren 9 och en kammare 11. Fran kammaren 11 oyerfOres ylirme till uppylirmningsanordningar 4 genom den mellan niiun- da delar befintliga yliggen. In the drawing, 1 denotes the engine cylinder, 2 the displacement piston and 3 the working piston. The engine means flows on an edge set back and forth between the upper hot part of the motor and the lower cold part, the working means passing through the heating device 4, the regenerator 5 and the cooler 6. In the heating device 4 the working means is supplied with heat indirectly from an external heat source in the form of a burner 10 or the like, which heats a container 9 for the heat-transporting means, which circulates through a line 7, a pump 8, the container 9 and a chamber 11. From the chamber 11 the heating system is connected to heating devices 4 through the space located between the parts. .

Genom anyandandet av metaller eller de- sammas legeringar eller fOreningar som ett varmetransporterande medel uppnas den fOrdelen, att man kan Ora ett urval bland olika for detta andamal sarskilt Iiimpade material, vilka genom en riktig sammansattning av olika metaller eller metallsalter praktiskt kunna erhalla de fysiska egenskaper, som fOrmit uppfylla de av yarmgasmotorn uppstallda yillkoren liven vid de mest olika effektbelopp och under de mest olika arbetsf6rhallanden. By using metals or the same alloys or compounds as a heat-transporting agent, the advantage is obtained that one can choose from a variety of materials especially for this purpose, which by a correct composition of different metals or metal salts can practically obtain the physical properties. , which form the conditions of the yarmgas engine, living at the most different power amounts and under the most different working conditions.

Sam metaller for detta andamal kunna med avseende pa sina smaittemperaturer ecu sina angtryck exempelvis natrium, kalium, cesium, kadmium, zink och bly anyandas. Diirjamte kunna Oven metallsalter eller blandningar ay dessa komma till anyandning som varmetransporterande material. Pa dessa salter shines gi- vetvis den fordran, att de rid moterns arbetstemperatur icke skola sonderdelas. Exempel pa sadana metallsalter Oro olika inctallhalogener som t. ex. zinkklorid, aluminiumbromid, kadmiumjodid, kalciumjodid, zinkbromid el- 1 ler hlandningar ay desamma. Dessutom lint- gakonuna liven nitrater, nitriter eller bland- I ningar nw dessa. Co-metals for this purpose can, with respect to their low temperatures ecu their impressions such as sodium, potassium, cesium, cadmium, zinc and lead anyandas. Diirjamte can Oven metal salts or mixtures ay these come to anyandning as heat-transporting materials. On these salts, of course, shines the demand that they do not divide the working temperature of the mother. Examples of such metal salts Concerning various metal halides such as e.g. zinc chloride, aluminum bromide, cadmium iodide, calcium iodide, zinc bromide or 1 slopes ay the same. In addition, lint- gakonuna lives nitrates, nitrites or mixtures nw these.

Metallens eller metallegeringens angtryck yid motorns driftstemperatur Or or betydelse med ayseende pa anyandbarheten som varmetransporterande medel. Ett 141 angtryek liar namligen en lag angtathet till foIjd, sa att for transporten av en bestamd varmemangd ledningarna maste ha ett stort tvarsnitt. Ett hogt angtryck erfordrar duremot visserligen tranga men kraftiga och i foljd haray tunga konstruktionsdelar. I foreliggande fall är ett Ongtryck hos det transporterande medlet ay hogst tre ganger det hOgsta i motorn upptradande trycket tillatet. Om man icke endast tilldelar arbetstrycket ett hogt varde utan Oven valjer arbetstemperaturen i det varma rummet hog, Or det fordelaktigt att uppdela detta medel i uppviirmningsanordningen i ett antal parallela strOmmar, som flyta genom Hr med sm. tvarsnitt. Genom att anylinda sadana kanaler !lied sma tvarsnitt kunna, oaktat det hoga trycket, dessa kanalers Yaggtjocklek goras Ii- ten, yarigenom varmemotstandet forhlir ringa. The pressure of the metal or metal alloy on the operating temperature of the engine is significant in terms of its flammability as a heat-transporting agent. Namely, a 141 angtryek liarar a law angthethet to follow, so that for the transport of a certain heat-sealed pipe must have a large cross-section. A high pressure, on the other hand, requires narrow but strong and consequently heavy construction parts. In the present case, an unpressure of the transporting means at a maximum of three times the highest pressure occurring in the engine is permitted. If one not only assigns the working pressure a high value but Oven chooses the working temperature in the hot room high, Or it is advantageous to divide this means in the heating device into a number of parallel streams, which flow through Hr with sm. cross section. By winding such ducts, small cross-sections can, notwithstanding the high pressure, the yag thickness of these ducts be made small, whereby the heat resistance remains low.

Claims

Pate ntansprak:

1. To drive a yarm gas engine, including a separate ruin and a cold room, which rooms are connected to each other and between which the working means flows back and forth, yaryid heat is supplied to the working means by means of a viigg in the hot part of the engine, which may indicate that a for heating ay working with: 11cl intended vOrmekOlht indirectly heats a diirvid wholly or partly in angform oyergaende, yarmetransporterande means in the form ay en! Retail, metal alloy or a metal salt, which britrias to during full or partial Transition to Yiltskeform give off heat in heti: wing with nOninda cradle in the engine heat

2. Salt according to patent claim 1, kanneleckmit & tray, that the heat-transporting means -yaljes sli, that its pressure ride the temperature radiating in the molar's heating device up to at most three times the hog-stn in the engine uppriidanae tryeket. Stockliolm 1048. Kungl. Boktr. P. A. Norsteat &Si; ner 480089