SU1302122A1 - Resistance electric furnace - Google Patents

Abstract

This invention relates to electrothermal equipment, in particular, extended electric furnaces for heat treatment of a tape. The aim of the invention is to increase the service life and efficiency of the heat transfer of the furnace. The electric furnace contains a lining with shelves in which zigzag band heaters are horizontally located, facing the side heat radiating surface towards the charge. The length of the zigzag of the heater is from 1.5 to 2.5 times its height, and the branches of the heater are located at an angle of 35-45 °. to its transverse axis. The ratio between the width of the heater strip and the length of its zigzag and the location of the heater zigzag at an angle to its transverse axis eliminates overheating of the heaters, which increases their service life and increases the heat transfer efficiency by 1.85-2.12 times. 6 Il. C 00 o u u hche gchee

Description

The invention relates to electrical instrumentation, is particular; Hj O-t is 1 v. 1, I can be used for pressure-sensitive tape.

The purpose of the invention loisi.nneiine

service and efficiency tsmsk kh dachi furnace.

At ft. I shows e.tect) oiche. rm;) es; in fig. 2 - a section .Л .Л on фнг. I: p;) FIG. 3 is a plot of the coefficient of efficiency of the P-ta radiation of the heater.t on yi.ia p / aspol 3111 zagr 11agr; } ia (rig. 4, the graph depends on the duration of the slug of the heater on the angle of the zigzag iia heater; on. 5 g) af | 1K for I1C1-M01 - the efficiency coefficient (MN of the heater on I1irin ribbon1; 1; in Fig. B)):;. :: - dependences of the service life of the heater on the ratio of the height of zi1 zaga from picrines,; i ii- you.

The electrotechnical structure contains a casing with (a rim, on which RLYANOL shelves with a cre-ayp1) zakl.t1N). | : j.e-elements 2, ribbon 1p 1e zigzag i: a- heating.p 3, circumferential lateral te; 1 with a radiating surface to the charge. L.Ti; Zi zaga pagrevat.t soztaz.l his o-; .) up to 2.5 ei o heights, a, aghi iiai; ei. iodine is given; o -1-5 to ei about the transverse axis.

E; 1tronech with it) from and captivity of works; lt teluyu.1im way.

When the occurrence of ribbons1) 1 c) abo1 :: cm nryuech - the furnace has its aggravated zigzag iiai peBai-elmi. about 1 den 1 1 to the lateral side (bs1. 1np: s) is warm to the outside surface.

The ratio between; 1u I1iri1 oh hp; r1 | on greveat.t and d.chinoy er (.i zi | -lag. and t akzhs location of the zigzag nag-revatev.l at an angle of 5 -45 ° to its new axis n;)) g to eliminate the overheating of the heater a nas screened ie) that ioi || iae 1 s: the rock of their service, and the magnitude of the 1 e (()) tentative return Ei 1.85-- 2.12); 1se.

The length ratio .iiir3a -a of the heater and its height, equal to 5-2.5, is optimal from the point of view of the length of the heater. With a ratio of 1.5, an increase in the specific nov1 of the power output leads to an increase in the temperature on the heater, which causes a decrease in the service life of the heater. With a ratio of lengths1) 1 and BbicoTi) 11a, the rewire bol1, now 2.5, fits efficiently, the heat transfer from the heater and eoo | branch1NCH11; o increases in; 1e; 1na but the top is post power, which also doesn’t have y .ieiH ineiiH:: heater life due to non-heating of its part remote from the cage.

Fig 3 shows the dependence of the h, the radiation efficiency factor of the heater on the angle y. geometry

five

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; - with -) () ;;: nmm); mtsasts to the slon1. u Miv, M i o ze. ; ii ijuiiic e (.) efficiency. (.) ;;:; ako ii, i: ip; i v;. (- pge ii.riaroB 1C) leads to ;; 6; (; L1OT1 OY per15oz, o / kp () C 1 and ra:} l e neni m..im g m: ck;) i: .iOin. in the workplace, the paiUTBe is ihechi. KpoMv- j oro, p;.; Tako-; ) heater.: pe. icT; i iiii; io would be significant - item T) d. nos 1; 1, like the kegktua process:: j; U3i iUMC.lC iiri g j K ii;,; - i; i h-h CI X PROPERTIES

; :., WHO soprotii.uspp pagreva 1 e.) Could mean Ch. Chyg :) .1 (P |) () rm i) () ia 1 1 p. Thus, o6pa3 (. Optimal, a, b: 1a (; b.; Ac; b); and pa f peiia e. 1 s) (vr. A -.uv: -;:. Iic -Hi, K inr; iar;.; g 1 :: H1erschp () th axis::; h.:.: - /:. 11. V.. -; a G I 1- i; 3a: i: i. K) liG.

iii: LLir. -one/. .- | ;;; L: .Ч. 1:; P ;;: M1.;: Uu :: a

-j OK, zhby iia; peisa (. i 1 i4i) i. four:.

i a FI1. ) Presented by: a 3. ie:; a is an elevation bridge. A: N. b. .1, .1 rVb .5 coefficient f. pezpachi 1-. zpch in:; p; -n 1. one is iLMKi iiairenate. And; in -p and and; .-; (i. g;.: 1,: zaed -: p.1ich; ch1e; i; ii iar ;; iz; i: X -2M4.i (K i Mi times.:.;, e , V. -) i5i,.;. C 1h 1 ". 1liche1 () - ;; -: la rgva i C. i ii coo i Hc K gws- No; (VHCI: aie-inin his service . 1 ;; m: H;). 2. :). d-ds gviye g: ;;: pi jKHianiiv; tea: zi i a. Oh in about. pciKO v6bi iae i, 1a ;; /; one- ; ;} pvidi; to lich) wat1 11 (: 1-. MecTHijiM pecpn Nam and ieni, :: eniiio ..- rock services1 1.

Pa (). 5 1: reds: an. KMi; UiBHcn u; C: i: ;;); ; L zhb: pa ;; eva I g; ;; ; about ; soy; HoniCHi; . ) 1m1) On uo .. ;; ; l and vkii of their first si 1, .5 pa cci ;. 5 i: -. ri-ijii; jia

L, t on; reiats. 1 of. Hm; hb; alloy Xi; 3, () 514 for KoT-poi o I 10 (1 lgm. h 5 (mm P. 2) and;. alojens; in the KPD on the electronic TSPP (). 130.2; 43 P1 and (1 , 5 .; 3.2.43 ni. To which corresponds | (the letter of L for (inn. O), the term of the c. N F- 6i ,: for a rat of hea .. ich coc Tais. Ine g 25 () P h. svieneiHni in () h (.-. ivaae cooTiioaie-І, B, term 1. 1. for the case of the attendees to decrease in table.;.

The application of the proposed furnace makes it possible to achieve an increase in the efficiency of heat transfer and an increase in the service life of heaters due to the proposed ratio of the length of the zigzag to its height and the location of the zigzags of the heater relative to its transverse axis.

Claims (1)

Invention Formula Electric resistance, containing, and the case, lining with shelves and horizontally located on them zigzag tape heaters, facing the side heat-radiating surface into the working space, are different in that in order to increase the service life and heat transfer efficiency of the furnace, the length of the heater zigzag is It is 1.5-2.5 times the width of the heater tape, and the zigzags of the heater are located at an angle of 5-45 ° to its transverse axis. L BUT FIG. 2 I. ii.i .: I i,, 11, l ii iiAi ii ;: U Xpi iU - ii; -Kop) (- Kri;: i П, l V l r} ii; -n );:.. to 1 I ln; r - ;: cHov HYI11I Gosularystven () / () Comipt; (.. (. i IKJ, .l ,.,;. i.6i) i genius and o lk) I 13035, VIocKua, F i;, P: -.: Ck;) 5 ii.io, d. 1: 6 1p (r (volatile () - n () or1 refining: .K irg jip, -, g; -., Already:) |) (i, i, ,,;, 11 |.-C-to-pa, 4