DE8532348U1 - Return cooler for laboratory and pilot plant - Google Patents

Description

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Laboratory glass * ί _β ** »* A, ei. '· *.' * .. '5o9 © Leverkugen, November 12, 1985 L Miethke GmbH
Kyll3tr. 7th

Gebratichsmus tar

Return cooler for laboratory and pilot plant

The innovation relates to a return cooler according to Obör-uö- · handle of claim 1 _O '>

Such return coolers are usually made of glass, seldom also made of plastic. With the previous return coolers, the heat generated vapors via a distributor piece into the lower connection of the cooler and traverse the returning, condensate dripping downwards. The condensate forms on the inner wall of the cooler and the connection .. a thin film, which is built up again by the vapors heats and partly evaporates again. Thereby the effect | degree of the cooler reduced. |

The task is to cool a return with improved?, To create efficiency. %

This object is achieved according to the characterizing part of claim 1. ^

The new design means that the in the return cooler |

entering vapors are centrally bundled in the steam outlet °

and kept away from the walls at the bottom of the cooler ,, ί

The condensate runs from the walls into the concentric top.

gutter, from where it appears in thick drops or as a thin stream %

enters the drain and drains. The risk of another.? The condensate is heated by the inflowing vapors

at reduced to a minimum. Cont-% dripping from the cooling package

u densat collects on the hood and drips as you pass through |

diameter is larger than that of the steam passage into which }

Collecting gutter from, so there is no renewed essential here either Evaporation is to be feared.

The collecting channel is preferably inclined towards the drain. This allows the condensate to flow better to the drain.

According to a special embodiment, the collecting channel is at the drain one that reaches into a condensate collecting tank Drain pipe or hose arranged.

This drainage pipe or * hose also prevents the immediate Contact of the supplied vapors with the condensate in connection with the possibly downstream distributor.

The hood preferably has a drip edge.

At this drip edge, the condensate collects as it runs off the hood to form larger drops, which then fall off.

According to a further particular embodiment, the housing equipped with a temperature control jacket.

This temperature control jacket has an insulating effect, so that the temperature in the cooling package is not caused by temperature fluctuations outside the return cooler is influenced. With controlled or regulated The evaporation process is done through the temperature control jacket Guaranteed temperature constancy particularly favorable noticeable.

The cooling package and temperature control jacket can have separate connections and drains for different temperature control media, if necessary.

However, it is preferably also possible that between KiLhI-packet and there is a flow-through connection for the temperature control jacket. Then only one inlet and one outlet is required, because the coolant can successively cooling package and

Flow through Teraperiermantel or vice versa , depending on which connection is chosen as the inlet.

Preferably, the lower connection of the cooling package is for Inner wall of the housing arranged sloping inclined.

In this way, what is deposited on the cooling package Condensate drained to the inner wall without it dripping off freely.

According to a special embodiment, the lower connection is designed as a screw connection, on which an M connection piece provided with mating threads at both ends

made of plastic is arranged, with between the mating threads a constricting paragraph is present, on the end faces of which seals are arranged.

This also decimates unwanted heat transfer between inside and outside, because the connector is off Plastic has a better insulating effect than previous screw couplings with a flange pipe adapter. With this one The new connector has also proven to be particularly advantageous because of its greater rigidity and better sealing properties. proven. Bs it goes without saying that it is universally applicable if laboratory glassware is provided with the appropriate. Screw connections are provided.

In the drawing, the new return cooler is in one embodiment shown purely schematically and explained in more detail below;

The return cooler consists of a housing 1 which has a conical ground connection 2 at its upper end and a screw connection 3 at its lower end. The housing 1 is double-walled so that it has a temperature control jacket k which is provided with a temperature control medium connection 5. The temperature control jacket k is via a flow connection

with a centrally i: n housing 1 arranged as a KUhI-

, serpentine cooling package 7 connected. By-

i flow connection 6 is to the inner wall 2k of the housing 1

ι sloping down «The cooling package 7 also has a

connection 8 leading to the outside. Thus, the temperature

! lubricant, a liquid, the cooling package J and then

ι ßend flow through the temperature control jacket k. At the bottom

fj is between the cooling package 7 and screw connections 3 a con-

, | arranged centric gutter 9, which has a steam

M passage surrounds Io. The gutter 9 is * on one side

I inclined towards it. At its deepest point there is a drain 11

I arranged, to which a drain hose 12 is connected

β is. It is through a distributor piece 13 (it is only the

j | circuit 14 shown) a rotary evaporator out

I and ends in a condensate container. The steam through

; let 1o is with a corresponding distance over feet 15 with a

₍ Hood 16 provided, which has a single point

* has formed drip edge 17. The screw connections

3.1 ^ are connected to both ends of plastic by means of a LABEL FOR with counter-thread 18,19 connector 2o, wherein between the mating threads 18,19 a constricting shoulder 21 is present, are arranged in the end faces of seals 22,23.

Claims (7)

Laborglas ··· Miethke GmbH KyIlstrasse 7 -7 ι * 1 '. "Ι ϊ: 5090 Leverkusen, I2.ii.i985 claims for protection 1) Return cooler for laboratory and pilot plant, in particular for rotary evaporators, consisting of a housing, which at least at the lower end with a connection is provided and encloses a cooling package at a distance, characterized in that in the housing (i) on the lower End concentrically around a steam outlet (ίο) a collecting channel (9) is arranged, which has at least one drain (11); and that above the steam passage (lo) a hood (i6) is arranged, the diameter of which is larger is than the diameter of the steam passage (lo). 2) return cooler according to claim 1, characterized in that that the collecting channel (9) is inclined towards the drain (ii). 3) return cool he according to claim 1 or 2, dadv.z'ch marked, that at the drain (il) of the collecting channel (9) a drain pipe reaching into a condensate collecting container (12) or »hose is arranged. k) return cooler according to one of claims 1 to 3 »characterized in that the hood (16) has a drip edge (17). 5) return cooler according to one of claims 1 to U , characterized «. characterized in that the housing (1) with a temperature control coat (Ό is fitted. * * 4 t ♦ · • ί ar »'· ·« β · β β · · a ·· r · β · · · ·
Β «> · β β a β β aa β a - a * - - a : 6) return cooler according to claim 5 »characterized in that that there is a flow connection (6) between the cooling package (7) and the temperature control jacket (4). 7) return cooler according to one of claims 1 to 6, da- (characterized in that the lower connection (6) of the Cooling package (7) is arranged sloping to the inner wall (Zk) of the housing (i). j 8) return cooler according to one of claims 1 to 7, there- I characterized in that the lower terminal (3) as . Screw connection (3) is formed, on which a two '' ■ connection end with mating threads (18,19) , 1 piece (2o) made of plastic is arranged, with between ¹ the mating threads (18,19) a constricting shoulder (21) is present, on whose end faces seals (22,23) are arranged.