CS197899B1

CS197899B1 - Hot air generator

Info

Publication number: CS197899B1
Application number: CS355678A
Authority: CS
Inventors: Dusan Drabek
Original assignee: Dusan Drabek
Priority date: 1978-06-01
Filing date: 1978-06-01
Publication date: 1980-05-30

Description

Vynález sa týká teplovzdušného generátore, spájajúceho spaíovaciu komoru a výmenníkom tepla do jedného celku.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot-air generator connecting a combustion chamber and a heat exchanger in one unit.

Intenzifikáoia výrobných procesov v mnohých prípadoch vyžaduje, aby sa spracovávané média ohrievali na stále vyššie teploty.In many cases, the intensification of production processes requires that the process media be heated to increasingly high temperatures.

V případe ohřevu plynov na vyššie teploty sa obyčajne použivajú spaliny, získané v spalovacích zariadeniach rSznej konstrukce.In the case of heating of gases to higher temperatures, flue gases obtained in combustion plants of different construction are generally used.

V druhom zariadení - výmenníku tepla odovzdajú spaliny část svojho tepla ohrievanému plynu. Toto usporiadanie možno charakterizoval následovně:In the second heat exchanger, the flue gases transfer part of their heat to the heated gas. This arrangement can be characterized as follows:

- spaíovacia komora je obyčajne opatřená dosl hrubou výmurovkou a teda vyžaduje pozvolné nabiehanie,- the combustion chamber is usually provided with a fairly thick lining and thus requires a gradual start-up,

- výmenníky tepla spaliny - plyn s ohíadom na nízké koeficienty přechodu tepla majú poměrně veíké výměnné plochy a teda veíké rozměry,- flue gas heat exchangers - the gas, having regard to the low heat transfer coefficients, has relatively large exchange surfaces and hence large dimensions,

- vo výmenníkoch sa v dost malej miere využívá sálavá zložka spalin, pretože s ohíadom na dilatácie sa dosahuje poměrně nízká teplota steny,- the heat exchanger component of the flue gas is used to a relatively small extent in the heat exchangers because, due to the expansion, a relatively low wall temperature is achieved,

- Spaliny obyčejně opúšlajú výmenník s dost vysokou teplotou a naproti tomu ohrie197 899- The flue gases usually leave the heat exchanger at a sufficiently high temperature and, on the other hand, heat up 197 899

187 899 vany plyn má výstupná teplotu poměrně nízku,187 899 tub gas has an outlet temperature relatively low,

Uvedené skutočnosti bezprostredne vplývajú na nízku účinnosť zariadení komora - výmenník a na ich značnú hmotnosť a veíkú zastavanú plochu.The above mentioned facts directly affect the low efficiency of the chamber-exchanger devices and their considerable weight and large built-up area.

Tieto nedostatky odstraňuje a technický problém rieši zariadenie podía vynálezu, ktorého podstatou je, že spája spaíovaciu komoru s výmenníkom tepla do jedného konštrukčného celku, pričom pozostáva z vnútorného plášťa, ktorý tvoří spalovací priestor generátore, áalej z vonkajšieho plášťa, zo zmiešavaccj komory ohraničenej vnútornou stranou vonkajšieho plášťa, deliacim diskom, vekom ako aj zmiešavacím kužeíom, ktorý je umiestnený v danej zmiešavaoej komoře a tvoří jej súčasť, kde v danom zmiešovacom kuželi je usporiadaná oddeíovacia doska, oddeíujúca spalovací priestor od priestoru riediaceho vzduchu nasávaného hrdlom umiestneným vo veku, výhodné v ose zariadenia. Zariadenie áalej pozostáva zo spirálovéj, výhodné dvojchodovej vostavby volné uloženej na vnútornom plášti, vytvárajúcej so stěnami, navařenými medzi dané spirály zvačšené výměnné plochy, uzatvárajúc s vnútornou plochou vonkajšieho plášťa a vonkajšou plochou vnútorného plášta a medzi spirálami vzduchové kanály a svojou dutou časťou vytvárajúc spalinový kanál. Zariadenie je tiež opatřené oddělovacím diskom taktiež posuvné uloženým voči vonkajšiemu plášťů a vnútornému plášťů a pre výstup spalin je v spodnej časti zariadenia usporiadaný výstup ako aj vstup do kanálov pre ohrievaný vzduch a jeho výstup v hornej časti zariadenia.The device according to the invention, which consists in connecting the combustion chamber with the heat exchanger into one unit, consists of an inner jacket, which forms the combustion chamber of the generator, and an outer jacket, a mixing chamber bounded by the inner side. an outer casing, a separating disc, a lid, and a mixing cone, which is located in the mixing chamber and forms part thereof, wherein in the mixing cone a separating plate is arranged separating the combustion space from the space of the dilution air sucked in the throat devices. The apparatus further comprises a spiral, advantageous two-pass assembly loosely mounted on the inner casing, with walls welded between said coils, enlarged exchange surfaces enclosing the inner surface of the outer casing and the outer surface of the inner casing and between the coils air channels and their hollow channel forming . The apparatus is also provided with a separating disc also displaceably disposed relative to the outer casings and inner casings, and an outlet as well as an inlet for the heated air ducts and an outlet thereof at the top of the apparatus is provided for the flue gas outlet.

Výhodou zariadenia podía vynálezu, oproti súčasnému stavu techniky je hlavně následovně :The advantage of the device according to the invention over the prior art is mainly as follows:

- teplovzduŠný generátor spája spaíovaciu komoru s výmenníkom tepla do jedného konštrukčného celku. Výmurovka komory je tenkostenná, alebo móže aj odpadnúť,- the hot-air generator connects the combustion chamber with the heat exchanger into one unit. The lining of the chamber is thin-walled or may fall off,

-zariadenie má menšie ,epelné straty oproti ueporiadaniu spalovacia komora + výmenník tepla, pracuje teda s výššiou účinnosťou,-the device has smaller, epithelial losses compared to the combustion chamber + heat exchanger arrangement, so it works with higher efficiency,

-zariadenie nabieha podstatné rýchlejšie ako u komdr s hrubšiou výmurovkou,-the device runs significantly faster than with a thicker lining,

-konštrukčné usporiadanie dovoluje ohrievať média na vyššie výstupné teploty, prědsta vuje úsporu na zastavanej ploché a nižšiu hmotnosť zariadenia,-the design allows to heat the media to higher outlet temperatures, results in savings on built-in flat and lower weight of the device,

-navrhovaná konštrukcia podía vynálezu umožňuje dobrp dilatáciu, posuvom spirál voči plášťů, napriek tomu nemdže dSjsť k primiešavaniu spalin do ohrievaného plynu, pretože priestor ohrievaného plynu má vyšší tlak ako priestor ohrievajúcich spalin.The design according to the invention allows good expansion by shifting the spirals relative to the shells, yet it is not possible to mix the flue gases into the heated gas, since the heated gas space has a higher pressure than the heated flue gas space.

Na pripojenom výkrese obr. 1 je zariadenie znázorněné v řeze, v náryse.In the accompanying drawing, FIG. 1 is a front elevational view of the device.

Zariadenie podía predmetu vynálezu, ako je znázorněné ha obr. 1 pozostáva z vnútornéi ho plášťa 1, ktorý tvoří spalovaoí priestor generátore, z Vonkajšieho plášťa 2» zo zmiešavaoej komozly 12. ohraničenej vnútornou stěnou vonkajšieho plášťa 2, deliacim diskom 10 a vekom ig, áalej opatrenej zmiešavacím kužeíom 11 a zo špirálovej, výhodné dvojchodej vostavby g, 17. volné uloženej na vnútornom plášti i, vytvárajúoej so stěnami 16 t«7 aa· a 17. navařenými medzi Spirály 2· 2’ ^a 4» 4’ zvačšené plochy, uzatvárajúo β vnútornou plo chou vonkajŠieho plášťa 2 a vonkajšou plochou vnútorného plášťa 1 a medzi Spirálami ja j vzduchové kanály a sVojou dutou časťou vytvárajúc spalinový kanál 2» áalej je zariadenie opatřené oddělovacím diskom 10, taktiež posuvné uloženým voči vonkajšiemu plášťů 2 a vnútornému plášťů 1, a oddeíovacou doskou 13. oddeíujúcou apaíovaoí priestor od priestoru riediaceho vzduohu, kde pre nasávanie riediaceho vzduchu je zariadenie opatřené na veku 18 vstupným hrdlom 14 a pre výstup spalin je v spodnej časti zariadenia usporiadaný výstup 15 ako aj opatřené vstupm pre ohrievaný vzduch do kanálov 6, 2, ^a θ ^a P^re výstup ohrla tého vzduchu hrdlom 2·The device according to the invention as shown in FIG. 1 consists of an inner shell 1 which forms the combustion chamber of the generator, an outer shell 2, a mixing chamber 12 delimited by the inner wall of the outer shell 2, a separating disc 10 and a lid 10, further provided with a mixing cone 11 and a spiral, preferably g, 17. loosely deposited on the inner shell 1, with the walls 16t, 7a and 17 and 17 welded between the spirals 2, 2 ' ^and 4' 4 ', enlarged surfaces, enclosing β with the inner surface of the outer shell 2 and the outer surface of the inner Furthermore, the device is provided with a separating disc 10, also slidable with respect to the outer skins 2 and the inner skins 1, and a separating plate 13 separating and separating the space from the space of the dilution space 1 and between the coils and the air ducts. wherein the device is provided for sucking in the dilution air The outlet 15 is arranged at the bottom of the apparatus for the exhaust gas outlet and also has an inlet for heated air into the channels 6, 2, ^and θ ^and P for ^the outlet of the heated air through the outlet 2.

Vnútorný plášť i zariadenia tvoří spaíovací priestor generátora. Spaliny z horáka preohádzajú spalovacím priestorom, odovzďávajú část tepla cez výmurovku a plášť 1 do vzduchu prúdiaceho kanálom vytvořeným vnútornou plochou vonkajŠieho plášťa 2 a vnokajšou plochou vnútorného plášťa 1 a medzišpirálovým priestoroM. Ďalej spaliny preohádzajú okolo došky 13 umiestnenej v zmiešovacom kuželi 11. ktorá zabraňuje sálaniu zo spaíovacieho priestoru a oddeíuje spaíovací priestor od priestoru riediaceho vzduchu. Pretože spalinový kanál 2 3^e napojený na saciu stranu ventilátore, dochádza v zmiešovacom priestore a v medzere medzi zmiešovacím kužeíom 11 a pláštom 2 k zmiešovaniu spalin a riediaceho vzduchu, ktorý sa nasáva hrdlom usporiadaným vo veku v hornej časti zariadenia. Spaliny vstupujú cez oddělovací disk 10 do kanálu vytvořeného dutou časťou špirálovej vo3tavby J,The inner casing and the equipment form the combustion chamber of the generator. The burners from the burner pass through the combustion chamber, transferring some of the heat through the lining and the jacket 1 into the air flow duct formed by the inner surface of the outer jacket 2 and the outer surface of the inner jacket 1 and the inter-spiral space. Further, the flue gases pass around a thatch 13 located in the mixing cone 11 which prevents radiation from the combustion chamber and separates the combustion chamber from the dilution air chamber. Since the flue gas duct 23 ^is connected to the suction side of the fan, the flue gas and the dilution air are mixed in the mixing space and in the gap between the mixing cone 11 and the casing 2, which is sucked in through the neck at the top of the device. The flue gases enter via a separating disc 10 into a channel formed by the hollow part of the spiral structure J,

16, 17 a opúšťajú generátor výstupom v dolnej časti generátora. Ohrievaný vzduch sa rozdeΤ’ ' íuje zo vstupného hrdla 14 do kanálov Q, I, 8 vytvořených vnútornou plochou vonkajŠieho plášťa 2 a vonkajšou plochou vnútorného plášťa 1 ako aj priestormi medzi Spirálami a postupuje spirálovité pro^i prúdu spalin. Odoberá teplo zo stien navařených medzi dvojicu špirál, z vnútorného plášťa 1, z ošáleného vonkajŠieho plášťa 2 a zo spirál. Spirály tvoria boky kanálov 6, χ, 8 a súčasne zvačšujú výmennú plochu pre ohrievajúci sa vzduch. Chriatý vzduch odchádza výstupným hrdlom 2 umiestneným v hornej časti zariadenia. Spalinový kanál 2 5^e vytvořený tak, že medzi dvojicu spirál sú navařené steny. Spirály a -oddeío vaoí disk 10 sú na vnútornom plášti 1 volné uložené, mfižu sa po ňom posúvať a rovnako sa můžu posúvať voči vonkajšiemu plášťů 2. Tým sa umožní potřebná dilatácia.16, 17 and exit the generator through the output at the bottom of the generator. The heated air is distributed from the inlet throat 14 to the channels Q, 1, 8 formed by the inner surface of the outer casing 2 and the outer surface of the inner casing 1 as well as the spaces between the coils and progresses spirally through the flue gas flow. It removes heat from the walls welded between the pair of spirals, the inner shell 1, the scuffed outer shell 2 and the spirals. The spirals form the sides of the ducts 6, 8, 8 and at the same time increase the exchange surface for the heating air. Chilled air is discharged through the outlet port 2 located at the top of the device. The flue gas duct 25 ^is formed such that walls are welded between a pair of spirals. The spirals and the separating disc 10 are loosely deposited on the inner shell 1, they can slide on it and can also be moved relative to the outer shell 2. This enables the necessary dilatation.

Využitie zariadenia podía predmetu vynálezu je všeobecne vo všetkých priemyselných odvetviach, kde sa ako teplonosné médium požaduje teplý vzduch o vyšších teplotách ako například: procesy sušenia, vytvrdzovania, žíhania a pod.The use of the device according to the invention is generally in all industrial sectors where warm air at higher temperatures is required as a heat transfer medium such as: drying, curing, annealing and the like.

Claims

3 tt7 a and 17. welded between the spirals JJ, 2 'and 4' 4 'of the welded surface, closing the β inner surface of the outer shell 2 and the outer surface of the inner shell 1 and between the spiral air channels and its hollow portion forming the epaline channel 8, The apparatus is provided with a separating disc 10 also displaceable relative to the outer shell 2 and the inner shell 1 and a separating plate 13 separating the receiving space from the air dilution air, where the device is provided at the lid 18 with the inlet orifice 14 for suction of the dilution air and is at the bottom for the exhaust gas outlet. the device is provided with an outlet 15 as well as provided with an inlet for the heated air to the channels 6, and θ and for the outlet of the heated air through the neck. The flue gases from the burner pass through the combustion chamber, diverting part of the heat through the lining and shell 1 to the air flowing through the channel formed by the inner surface of the outer shell 2 and the outer surface of the inner shell 1 and the intercooler space. Furthermore, the flue gas passes through the ducts 13 located in the mixing cone 11, which prevents radiation from the combustion chamber and separates the combustion space from the dilution air space, since the flue gas duct is connected to the suction side of the fan, occurs in the mixing space and between the mixing cone 11 and the housing 2 for mixing the flue gas and the dilution air, which is sucked through the neck arranged in the upper part of the device. The flue gas enters through the separating disk 10 into a channel formed by the hollow portion of the spiral fitting J, 16, 17 and exits the generator through the outlet at the bottom of the generator. The heated air divides from the inlet orifice 14 into the channels Q, 2, 8 formed by the inner surface of the outer skin 2 and the outer surface of the inner skin 1 as well as the spaces between the spirals and the spiral inlet of the flue gas stream. It takes heat from the walls welded between the twin-spiral, the inner shell 1, the shabby outer shell 2 and the spirals. The coils form the flanks of the channels 6, 2 'and at the same time increase the exchange surface for the heated air. The air is discharged through the outlet 2 located in the upper part of the apparatus. The combustion channel 2 is formed such that walls are welded between the pair of spirals. The spirals and the separating disc 10 are loosely mounted on the inner shell 1, which slides along it, and also moves itself towards the outer shell 2. This allows the necessary dilatation. The use of the device according to the invention is generally in all industrial sectors where hot air is required as a heat transfer medium, for example: drying, curing, annealing and the like. SUBJECT OF THE INVENTION 1. ' A hot-air generator connecting a combustion chamber with a heat exchanger to a single structural unit, characterized in that it consists of an inner shell (1) that forms the generator's combustion chamber from the outer shell (2) of the mixing chamber f 2f bounded by the inner wall of the outer shell (2) and a partition disk (10/4 " 7 MB) as well as a lid (18), wherein the mixing chamber (12) is provided with a mixing cone (11) and a separating plate (13) separating the space from the air dilution space the device consists of a spiral-like, double-edged structure (3, 4, 16, 17) disposed on the inner shell (1), forming with the walls (16, 17) the welded interspirals (3, 4) the interchangeable surfaces and closing 8 the inner surface of the outer shell and (2) the outer surface of the inner shell (1) as well as between the coils (4, 3 ') of the air duct and its hollow portion forming and wherein the flue gas duct (5) and the apparatus is further provided with a separating disc (10), also displaceable relative to the outer skin (2) and the inner shell (1), and an inlet neck (14) is arranged at the lid (18) for suction of the dilution air and for the outlet of the flue gas in the lower part of the device, the outlet (15) as well as the inlet for the heated air into the ducts (6, 7 and 8) and for the heated air outlet at the upper part of the device, a neck (9/1) of the drawing