DE8912339U1 - Flow-through heat exchanger - Google Patents

Description

Joh. Vailiant GmbH u. Co

^GM815

Oct. 889

Flow-through heat exchanger

The invention relates to a flow-through heat exchanger which can be heated with heating water heated in a heating circuit and which contains, in its exchanger chamber through which the heating water flows, pipe coils through which the service water to be heated flows.

The object of the invention is to design such a heat exchanger in a way that saves as much space as possible. In particular, it is an aim

^vy of the invention, the space requirement of the heat exchanger in its height without reducing its performance.

According to the invention, to solve this problem, at least two coiled tubes are arranged within the exchanger chamber, which are wound around axes running parallel to one another.

According to the preferred embodiment of the subject matter of the invention, the adjacent pipe coils are connected in series and the service water to be heated flows through them in opposite directions, so that the exchanger space is divided into exchanger spaces that accommodate these pipe coils.

In order to reduce these exchanger chambers to a volume that ensures high performance with rapid heating of the heat exchanger, the individual tube coils are wound around air-filled cylindrical hollow bodies, which act as displacement bodies and make the exchanger chambers ring-shaped, in that the individual tube coils can be wound within individual, parallel cylindrical housings that carry heating water.

I The gap between the outer sides of the adjacent cylin=

The spaces remaining in the cylindrical housing can be closed off at the front using closing elements.

jf Mach a particularly favorable in terms of efficiency

I Implementation of the subject matter of the invention are the two

·;·. open front sides of such housings of bowl-shaped, heating=

t water-carrying lids, each with a heating element

\ Water connection and with an opening for the &ngr; coiled tube end from the exchanger chamber.

I Regarding the design of these covers, the

I invention opens up various possibilities, from which % is to be selected depending on the number of coiled tubes ^ contained in the heat exchanger.

I If the heat exchanger comprises two coiled tubes,

:, housing, these are expediently provided with separate, identical, pre=

I preferably covered with conformal designed lids, of which I the upper cover of one housing the connection of the heating= I water supply, the upper cover of the other housing the

!;■ Connection of the heating water return and the two lower cover connections for attaching a the two housings

: have a connecting pipe that carries heating water and is penetrated by the coiled pipe ends.

If, however, the heat exchanger comprises three housings, each containing a coiled tube, these are expediently covered with common, preferably also conformally designed covers, of which the upper cover has the connection for the heating water flow and the lower cover has the connection for the heating water return,,", ,; ,··.···:···:,··,

- 3 &ngr;»
In order to force the heating water to flow in opposite directions through the annular exchanger spaces delimited by the walls of the housings and the cylindrical hollow bodies when such single covers are arranged, the exchanger spaces formed by these covers and carrying the heating water must be divided by partition walls which are sealingly connected to closing elements arranged between adjacent housings.

Embodiments of the subject matter of the invention are explained below with reference to the drawings.

In detail

Fig.l a vertical section through a two

Continuous flow heat equipped with pipe coils =

exchanger,
Fig.2 also shows a vertical section through one.

such a heat exchanger with three coiled tubes ₍ Fig.3 a cross section through such a coiled tube

on a larger scale and Fig.4 a view of the flow-through heat exchanger.

Common to all embodiments shown in the drawings are a pipe coil 1 with a connection 2 for a cold water supply line from a water supply network and a connection 3 for the hot water tap line leading to a tap.

These pipe coils 1 are each wound inside a cylindrical housing 6 through which the heating water flows and which can be closed at the top and bottom with covers 4 and 5, respectively, which have a connection 7, 8 or 11 and are penetrated by a pipe 9 which forms the pipe coil 1 and connects the cold water connection 2 with the tap line connection 3.

Each coiled tube 1 is wound around a cylindrical, air-filled hollow body 10, which is closed at the front by means of end plates and can also have curved head pieces in order to reduce pressure losses.

In the embodiment according to Fig. 1, two pipe coils 1 are provided and each of these two pipe coils 1 is housed in its own housing 6, which is closed at the top and bottom by separate covers 4 and 5. The cover 4 of one housing 6 (the one on the right in the drawing) has the connection 7 for the heating water flow, the cover 4 of the other housing 6 (the one on the left in the drawing) has the connection 8 for the heating water return.

The covers 5 closing the lower end faces of these housings 6 can be designed in conformity with the upper covers 4. Their connections 11, however, serve to connect a connecting line 13 connecting the two exchanger chambers 12.

These annular exchanger spaces 12 containing the coiled tube 1 are delimited by walls of the housing 6, by walls of the cylindrical hollow bodies 10 and at the front by the covers 4 and 5.

A line 14 extending from the heating water return connection 8 is attached to the (left) housing 6 by means of a bracket 15 and runs parallel to the axis of the housing 6 to the heating water return 16. The spaces 17 between the housings 6 are closed at the front by closing elements 18, which also connect the housings 6 to one another.

The design of the heat exchanger according to Fig.2 differs from that according to Fig.1 mainly in that it has three

Row, i.e. one after the other, contains the coiled pipe 1 through which the water to be heated flows. In this embodiment, both covers 4 and 5 extend over all three housings 6 of the coiled pipe 1. The upper cover 4 has the connection 7 for the heating water flow on one side, the lower cover 5 has the connection 8 for the heating water return on the opposite side.

The air-filled hollow body 10 on the left in the drawing is only closed at the bottom against the cavity of the cover 5 that carries the heating water by a front plate and penetrates the upper cover 4 with its upper open front side. The middle hollow body 10 can be open at the top and bottom, thus allowing air to flow through it and penetrate the two covers 4 and 5, the right hollow body 10 can be closed at the top and open at the bottom.

In order to allow the heating water to flow successively through the annular exchanger spaces 12 formed by the three hollow bodies 10 on the one hand and the three housings 6 on the other hand, partition walls 19 are inserted between the left and the middle pipe coil 1 in the lower cover 5 and between the middle and the right pipe coil 1 in the upper cover 4, which divide the hollow space of these covers 4 and 5 by sealingly connecting to the closing elements arranged between the housings 6.

■ · · t

Claims (9)

are flowed through one after the other in opposite directions (Fig. 1,2). !; 3. Heat exchanger according to claim 1 or 2, characterized in '; shows that the individual coiled tubes (1) are filled with air I {\ cylindrical hollow bodies (10) are wound around (Fig.1,2). % 4. Heat exchanger according to one of claims 1 to 3, '% characterized in that the individual tube coils (1) :· within individual, parallel, heating water f| leading cylindrical housing (6) are coiled (Fig.1,2). ' 5. Heat exchanger according to claim 4, characterized in f: that the spaces (17) between the outer sides of the mutually % adjacent cylindrical housing (6) by means of a closure organ= }' _: nen (18) are closed at the front (Fig.1,2). i 6. Heat exchanger according to claim 4 or 5, characterized in that the two open end faces of such housings (6) are covered by shell-shaped covers (4,5) carrying heating water, each of which is provided with a heating water connection (7,8,11) and with an opening for leading the end of the coiled tubing out of the exchanger chamber (12) (Fig.1,2). 7. Heat exchanger according to claim 6, characterized in that at least two each have a tube coil (1) holding housings (6) are covered with separate, preferably conformally designed covers (4,5), of which the upper cover (4) of one housing (6) has the connection (7) of the heating water flow, the upper cover of the other housing (6) has the connection (8) of the heating water return and the two lower covers (5) have connections (11) for attaching a connecting line (13) carrying heating water which connects the two housings (6) to one another and is penetrated by the pipe (9) forming the pipe coil ( 1 ) (Fig.l). 8. Heat exchanger according to claim 6, characterized in that at least three housings (6), each containing a coiled tube (1), are covered with common, preferably conformally designed covers (4, 5), of which the upper cover (4) has the connection (7) of the heating water flow, the lower cover (5) has the connection (8) of the heating water return, and both covers (4 and 5) are penetrated by the pipe (9) forming the coiled tube (1) Y (Fig. 2). Il Il · Il till·»·· t III· t» Il · · · · t 9. Exchanger according to claim 1 , characterized by the partition walls (19) formed by the covers (4,5) which divide the cavities carrying the heating water, which walls are connected to closing elements (18) arranged between adjacent housings (6) and force the heating water to flow successively in opposite directions through the annular exchanger spaces (12) delimited by the walls of the housings (6) and the cylindrical hollow bodies (10).