CH259213A - Heat exchanger. - Google Patents
Heat exchanger.Info
- Publication number
- CH259213A CH259213A CH259213DA CH259213A CH 259213 A CH259213 A CH 259213A CH 259213D A CH259213D A CH 259213DA CH 259213 A CH259213 A CH 259213A
- Authority
- CH
- Switzerland
- Prior art keywords
- heat exchanger
- pipes
- exchanger according
- fins
- gas
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Echangeur de chaleur. La Präsente invention <B>a,</B> pour objet un 6changeur de chaleur pH#sentant iin groupe de tuyaux, munis d'ailettees, dans lesquels s'#coule un liquide, ei 16ehbs par des gaz chauds. Heat exchanger. The subject of the present invention <B>has,</B> is a pH heat exchanger comprising a group of pipes, provided with fins, in which a liquid flows, ei 16ehbs by hot gases.
On a trouv6 que Ja durk ei l'efficaeitg des 6changeurs de chaleur connus de ce genre sont sbrieuseinent affeet#es par des dAp6ts provenant deo gaz chauds, ces d#p6is for- mant des recouvrements ei des inerustations sur lets tuyaux d'6coulement de, liquide ei auss,i sur leo ailettes. It has been found that the duration and efficiency of known heat exchangers of this type are seriously affected by deposits from the hot gases, these deposits forming coatings and inerustations on the heat flow pipes. , liquid ei auss,i on leo fins.
On a trouv# que ces d6p6ts varient avee les chang--ments dans la vitesse des gaz chaude, paesant <B>ä</B> fravers l'6eha.ngeur <B>de</B> cha,leur ei, comme, da.n6 leas constructions connues, la disposition des tuyaux d'koule- inent <B>de</B> liquide donne lieu <B>ä</B> une diminu- tion de la vitesee des gaz chauds lorsque ces derniers passent a travers l'#vhan,-eur de eha- Ic,ur, la formatio#n de d#p6ts est favorigk de ce fait. These deposits have been found to vary with changes in hot gas velocity, weighing <B>ä</B> through the heat exchanger, their ei, as , in known constructions, the layout of the liquid delivery pipes gives rise <B>ä</B> to a reduction in the speed of the hot gases when the latter pass through the #vhan,-eur of eha- Ic,ur, the formation of deposits is favored by this fact.
L'invention a po-ur but de remAdier <B>ä</B> cet inconv#nient ei,<B>ä</B> cet effet, l'#changeur de chaleur selon Finvention est agene6 de fa#on que des passages form#6s entr,- les tuyaux üt pare,ourus par les gaz chauds ont une section qui va en diminuant vers le c6t6 desortie des gaz. En effet, tant que la vitesse des gaz chaude,- est inf6rie:ure <B>ä</B> la vites#s,e du sion, la düssposition selon Finvention aura pour effet de Wopposer #h une perte de vitesse des gaz traversunt l'6ehangeu#r. <B>L6</B> dessin repr##sente, <B>A,</B> titre d'exemple, deux formt%s d'exkution de Vobjet de Fin- vention. The aim of the invention is to remedy <B>ä</B> this drawback and, <B>ä</B> this effect, the heat exchanger according to the invention is arranged in such a way that passages formed between the pipes shielded by the hot gases have a section which decreases towards the gas outlet side. Indeed, as long as the speed of the hot gases is less than the speed of the gas, the disposal according to the invention will have the effect of opposing a loss of speed of the gases. crossed the 6ehangeu#r. <B>L6</B> drawing represents, <B>A,</B> as an example, two forms of execution of the object of the invention.
La fi--. <B>1</B> est une vue en plan d'une pre- miäre forme d'exkution. The fi--. <B>1</B> is a plan view of a first form of execution.
La fig. 2 est une vue de bout- de cette forme. fig. 2 is an end view of this shape.
Le,s, fig. <B>3</B> ei 4 sont des vues similaires de la deuxi#me forme. d'exkution. L'6ehan,-;eur de eha.leur suivant les fig. <B>I.</B> The,s, fig. <B>3</B> ei 4 are similar views of the second form. of execution. The 6ehan,-;eur of eha.leur according to figs. <B>I.</B>
ei 2 comp#rend trois tu.yaux parall#Ies <B>6</B> dans lesquelo s',6coule un ;liquide ei passant <B>ä</B> tra,- vers unü ebrie. d'aileitQ,3 <B>7</B> soudks <B>ä</B> ces tuyaux. La disposition eet telle que les t-,-az chauds, provenant Tune sourei2 de ahaleur, telle quun brüleur <B>ä</B> gaz, s'#chappent vers le haut enirc# les tuyaux ei les ailettes dans la direction des flkhes (fig. 2) pour arriver <B>ä</B> Vorifiee d'issue, (non montH) du dispositif. lies tuyaux <B>6</B> ont une seetion tran#sve-rsa.le en forme<B>de</B> coin dont Je. sommet est dirigb du c6t,6 de sorfie, des gaz ei sont RTI ID="0001.0271" WI="13" HE="4" LX="1532" LY="1781"> dispos#o <B>de</B> felle fagon que les passages <B>8</B> form#s entre les tuyaux ei parcourus par les --az ont une see- tion qui va en diminuant vers le üöt# de sor- fie des gaz. ei 2 comprises three parallel pipes <B>6</B> in which a liquid flows ei passing <B>ä</B> tra,- towards a ebrie. of aileitQ,3 <B>7</B> welds <B>ä</B> these pipes. The arrangement is such that hot gases from a heat source, such as a <B>ä</B> gas burner, exhaust upwards around the pipes and fins in the direction of the flkhes (fig. 2) to arrive <B>ä</B> Vorified issue, (not montH) of the device. The pipes <B>6</B> have a transverse wedge-shaped section <B>6</B> of which I. summit is directed from the exit side, gases are RTI ID="0001.0271" WI="13" HE="4" LX="1532" LY="1781"> available#o B> in such a way that the passages <B>8</B> formed between the pipes ei traversed by the --az have a section which decreases towards the üöt# of the gas outlet.
Les fig. <B>3</B> ei 4 montrent un khangeur de chaleur produisant un effet similaire"et com- prenant quatre tuyaux parallMes <B>9</B> dan8 ',es- quels. s'koule un liquide ei traversant des ailettes, <B>7</B> auxquelles ils sont -,oudbs. Cec- tuya,ux ont unc section transversale allongbe de fagon <B>ä</B> pr#eenter des face#s la.Mrales plates. La dis, .position est telle que les faces plates en regard d'une paim quelconque de tuyaux voisins foTment entrie elles un angle dünt le sommet ee, trouve du c6t6 de. #sortie des, gaz. Ain-si, les passages <B>8</B> form6s, entre les tuyaux ont une sea-Hon quil va en diminuaut vers Ie c6tä de so.rtie des. gaz. Figs. <B>3</B> and 4 show a heat exchanger producing a similar effect"and comprising four parallel pipes <B>9</B> in 8 ', from which a liquid flows and passes through fins, <B>7</B> to which they are angled. say, the position is such that the flat faces facing any pair of neighboring pipes form an angle between them at the apex, found on the gas exit side. 8</B> formed, between the pipes have a sea-Hon which decreases towards the gas outlet side.
Les ailettes <B>7</B> ont des cöt6s <B>10</B> couver- gents etont ainsi chaeune la forme d'un tra- p#ze dont la p#e-ti-be base se trouve du cM6 de eortie des gaz. The fins <B>7</B> have overlapping sides <B>10</B> and thus each have the shape of a trapezoid, the base of which is located on the cM6 gas outlet.
La disposition selon Pinvention augmente aussi la turbulence des, gaz et permet de r6a-Iis#e"r un transIert de chaleur plus effieace entre Jes, gaz ohauds et lees tuyaux. The arrangement according to the invention also increases the turbulence of the gases and makes it possible to achieve a more efficient heat transfer between the hot gases and the pipes.
Les khangeurs d#6orits, ei-deseus peuvent etre entour,6s d7un beitier qui fait contaet ou non avec les bords des, aflettes. The orits, ei-deseus changers can be surrounded by a beitier which may or may not come into contact with the edges of the aflettes.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB259213X | 1945-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH259213A true CH259213A (en) | 1949-01-15 |
Family
ID=10235491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH259213D CH259213A (en) | 1945-02-19 | 1946-03-19 | Heat exchanger. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH259213A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0565813A1 (en) * | 1992-04-16 | 1993-10-20 | Längerer & Reich GmbH & Co. | Heat-exchanger |
-
1946
- 1946-03-19 CH CH259213D patent/CH259213A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0565813A1 (en) * | 1992-04-16 | 1993-10-20 | Längerer & Reich GmbH & Co. | Heat-exchanger |
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