DE8319866U1 - Tubular heat exchanger - Google Patents

Description

WINDHOFF-Perfex GmbH, Burgsteinfurter Damm, 4445 Neuenkirchen

"Tubular heat exchanger"

The invention relates to a tubular heat exchanger according to the preamble of the main claim.

Tubular heat exchangers are widely known and serve on the one hand for heat recovery, on the other hand for cooling, for example of exhaust gases, in order to prevent the exhaust gases from escaping to cool down to a value temperature.

In the latter case in particular, in some cases it is necessary to ensure that that on the outside of the actual exchanger housing temperatures above a certain level worth not occurring, so that, for example, despite a 7oo high exhaust gas temperature, the outside of the rope seer housing does not have a value of 2oo exceeds.

The invention has for its object to provide a tubular heat exchanger in which the Upper surface temperature in all areas of the Surface is limited, which is structurally simple and designed to be light in weight can be.

This object on which the invention is based is achieved solved by a surrounding the outside of the exchanger housing in the area of the gas inlet side Heat exchanger chamber that has one connection piece

for the exchange medium and opposite has a connection opening for the exchange medium to the interior of the exchanger housing and on its gas inlet side a connecting flange for the connection to the gas line has processing.

This inventive construction is that in the area of the egg ηtri11sseite of the tube heat exchanger for the hot gas inevitably required Liche gas collecting chambers are overlapped by an outer heat exchanger chamber, this heat exchanger chamber ensuring that the exchanger housing limits the gas inlet side

Surface temperature does not exceed and where

at the same time the connection flange for the exchanger housing on the gas-carrying line is also cooled becomes / so that a good cooling of the medium can be achieved in all these areas.

Further advantageous embodiments of the ne'jen Equipment are explained in the subclaims,

An exemplary embodiment is shown below with reference to described in the drawing. The drawing shows while in

Fig. 1 partially broken away a

Side view of a tubular heat exchanger and in

Fig. 2 is a side view of the

Tubular heat exchanger according to Fig. 1.

In the drawing, 1 is generally a tube

- "7. _

heat exchanger, which is an exchanger housing 2, in which the exchanger tubes 3 are anyeordnpt. The exchanger tubes 3 are hot from one gas to be cooled flows through, which via the G a s ζ u ~ Guide line 4 is supplied. The gas supply line 4 has a water ring chamber 5 on its outside. The direction of flow of the gas is indicated by the arrow F ^.

The wall of the Tausc he! 'Housing 2 has compensators 6 and 7, the thermal expansion of the outer wall of the exchanger housing dominate. Within of the exchanger housing are provided to guide walls 8, for the largest possible flow around the exchanger tubes 3 through the exchanger medium Take care.

The Tau sehmedium is via a connection piece 9 supplied and discharged via a connection piece 1o and flows through in the illustrated embodiment the tubular heat exchanger 1 in cocurrent to the gas to be cooled, of course here also countercurrent cooling mc-ilich is .

On the gas side of the tubular heat exchanger a gas collection chamber 11 is provided for a distribution of the gas flowing through the line 4 to all pipe mouths ensures. These Gassammeίkämmer 11 is from a heat exchanger chamber 12, whereby - as clearly shown in FIG. 1 - this heat exchanger chamber 12 on the one hand the gas collection chamber 11 overlaps, on the other hand also the outer wall of the exchanger housing 2 overlaps on the side of the gaiter. Such forms

the wall of the gas collection chamber and the exchanger housing 2 the inner wall of the heat exchanger chamber 12, while the outer wall of the heat exchanger chamber 12 is denoted by 14. The connecting piece 1o is in the outside 14 of the heat exchanger chamber 12 arranged. That through the connection piece 9 supplied cooling medium flows through the heat exchanger chamber 12 and exits from it a flow opening 15 in the actual Exchanger horn 2 on.

The outer wall 14 of the heat exchanger chamber 12 closes flush with a connecting flange 16, the connection of the actual tubular heat exchanger 1 to the gas line 4 is used.

In the illustrated embodiment, the Connecting flange 16 chosen so strong that in this connecting flange to the outside opening blind holes can be provided, into which the fastening means 17 indicated in the drawing are screwed from the outside can without the holes or the fasteners with the inside of the heat exchanger chamber 12 come in contact.

Since the heat exchanger chamber 12 with its outer wall 14 with the outer circumference of the connecting flange ends flush, an almost full-surface cooling of the connecting flange 16 is achieved, see above that also in this area, i.e. in the outer peripheral area of the connecting flange 16, the limited surface temperature of the entire unit is not exceeded.

Due to the effective cooling of the inlet side of the tubular heat exchanger, an easily produced, no large weight supplements required making cooling achieved. The total effort for the device according to the invention is therefore not much higher than for the entire tubular heat exchanger.

As can be seen from the drawing, the

outer ends of the compensators 6 and 7 equipped with ventilation and drainage connections, which are so at the highest and lowest point of the unit, with also

a safety valve can be connected here can.

Claims (8)

"Tubular heat exchanger" claims; 1. Switched on in an exhaust pipe Tubular heat exchanger with a gas outlet flow through tubes receiving exchanger housing with connecting piece for the exchanger medium and a gas collecting chamber arranged on the gas inlet side of the exchanger housing j, marked through one the outside of the exchanger the housing (2) in the region of the gas inlet side surrounding the heat exchanger chamber (12), the one connection piece (9) for the Has exchange medium and opposite lying a connection opening (15) for the Exchange medium to the inside of the exchanger housing (2) and a connecting flange (16) on its gas inlet side for connection to the gas pipe (4) Zo having. 2. tubular heat exchanger according to claim 1, characterized in that the heat exchanger chamber (12) in the longitudinal axis of the Gas flow seen the gas collection chamber (11) and a part of the outside of the exchanger housing (2) overlaps. 5 3. tubular heat exchanger according to claim 1 and 2, characterized in that the connection of the inner space of the heat exchanger chamber (12) with the interior of the exchanger housing (2) via "ine in the outer wall of the exchanger housing Flow opening (15) takes place. 4. Tubular heat exchanger at least according to claim 1, characterized in that the connecting flange (16) has a thickness such that the screw means (17) serving for connection to the gas line (4) are arranged in blind bores in the connecting flange. 5. tubular heat exchanger at least according to claim 1, characterized in that the gas line (4) is surrounded by a water ring chamber (5). 6. Tubular heat exchanger at least according to claim 1, d adurch gekennzeichne t that in the wall of the exchanger housing (2) compensators (6, 7) for longitudinal teeth are used. 7. tubular heat exchanger according to one of claims 1 to 6, characterized in that the outer UrrHangswand (14) of the Exchange chamber (12) at the level of the outer Circumferential surface of the connecting flange (16) follows. 8. tubular heat exchanger according to claim 7, characterized in that the inner wall of the heat exchanger chamber (12) with the outer wall of the exchanger housing (2) on the one hand and essentially with the inner peripheral wall of the connecting flange (16) is aligned.