DK2226589T3

DK2226589T3 - Hot water boiler

Info

Publication number: DK2226589T3
Application number: DK10001816.7T
Authority: DK
Inventors: Lars Hamelmann
Original assignee: Vaillant Gmbh
Priority date: 2009-03-04
Filing date: 2010-02-23
Publication date: 2017-07-24
Also published as: EP2226589A3; PL2226589T3; AT507979A3; EP2226589B1; EP2226589A2; AT507979A2; ES2631510T3

Description

HOT WATER TANK

The invention relates to a hot water storage tank which is surrounded by insulation in conjunction with at least one hydraulic module which is mounted thereon for thermally charging and discharging the storage tank.

Hot water storage tanks are used for storing thermal energy. Usually, heating or industrial water is stored therein. In order to supply thermal energy to the storage tank, there is often located in the industrial water storage tank a helical heat exchanger, through which a heating medium flows. Another possibility involves cool water being taken from the industrial water storage tank from the lower region, being heated in an external heat exchanger and subsequently being supplied to the storage tank again. If the hot water storage tank contains heating water, the heat of the heating water for preparing the industrial water has to be transmitted in a heat exchanger to the industrial water. To this end, on the one hand, a helical heat exchanger, through which the industrial water flows, can be arranged inside the hot water storage tank. Another possibility involves drawing warm heating water out of the hot water storage tank and transmitting a portion of the thermal energy thereof to the industrial water in an external plate heat exchanger.

Hydraulic modules are often used to charge and/or discharge a hot water storage tank. These hydraulic modules constitute a structural unit and contain in addition to a housing at least one circulating pump and a secondary heat exchanger which is usually constructed as a plate heat exchanger. The secondary heat exchanger is connected with two connections to the hot water storage tank so that water can be drawn off or supplied and consequently heat can be introduced to or removed from the hot water storage tank.

According to the prior art, hydraulic modules are fixed to the outer side of a hot water storage tank by means of screws, subsequently the hydraulic lines of the hydraulic modules are connected to the connections of the hot water storage tank. EP 784192 A1 discloses the connection of a hot water storage tank to a heating device, in which rails for connection to the housing of the heating device and hydraulic connections are fitted to the hot water storage tank so that for connection the heating device simply has to be pushed into the rail and screwed to the connections. GB 2241564 A sets out a heating device having prefabricated connections for connection to a circulating pump which is fitted outside the heating housing and a switching valve.

An object of the invention is to simplify the suspension and fixing of hydraulic modules to hot water storage tanks and to reduce the heat losses.

This is achieved according to the invention in accordance with the characterising features of the independent claim 1, wherein the hydraulic connection lines simultaneously act as fixing elements.

Advantageous embodiments of the invention will be appreciated from the features of the dependent claims.

The invention will now be explained in detail with reference to the Figures, in which:

Fig. 1 shows a hot water storage tank having two hydraulic modules as a side view (of the hydraulic modules),

Fig. 2 shows the same hot water storage tank having two hydraulic modules as a front view (of the hydraulic modules), and

Fig. 3 is a detailed view of the connection of the hot water storage tank having a hydraulic module.

The Figures show a hot water storage tank 1 having four hydraulic connections 5,6,7, 8 at different levels, wherein the hydraulic connections 5, 6, 7, 8 extend through a wall 4 of the hot water storage tank 1 at one side. The hot water storage tank 1 is surrounded by insulation 15, wherein the insulation 15 has recesses at the location of the hydraulic connections 5, 6, 7, 8. The hydraulic connections 5, 6, 7, 8 have threads at the outer side of the hot water storage tank. Four connection pipes 9,10,11,12 engage in these threads of the hydraulic connections 5, 6, 7,8 and consequently extend through the insulation 15.

Two hydraulic modules 2, 3 are placed on the insulation 15 of the hot water storage tank 1. The rear walls 16, 17 of the hydraulic modules 2, 3 have openings which surround the connection pipes 9, 10,11,12. Outer threads which are used to fix the rear walls 16,17 of the hydraulic modules 2, 3 to the hot water storage tank 1 by means of corresponding nuts are located at the side of the connection pipes 9, 10, 11, 12 facing away from the hot water storage tank 1.

The connection pipes 9,10,11,12 have at the side facing the storage tank inside the threads radially extending grooves 13, in which a respective radial seal 14 is arranged.

For assembly of the hydraulic modules 2, 3, initially radial seals 14 are inserted in the grooves 13 of the connection pipes 9, 10, 11, 12. Subsequently, the connection pipes 9, 10, 11, 12 are fitted through the openings in the insulation 15 and are screwed to the hydraulic connections 5, 6, 7, 8. In this instance, the radial seals 14 seal the transitions in a water-tight manner. If the connection pipes 9,10,11,12 are screwed, they project beyond the insulation 15 of the hot water storage tank 1. The connection pipes 9, 10, 11, 12 have at the side facing away from the hot water storage tank 1 a greater diameter than at the side associated with the hot water storage tank 1. The hydraulic modules 2, 3 are now positioned in such a manner that the openings in the rear walls 16,17 of the hydraulic modules 2, 3 are fitted over the connection pipes 9,10,11,12. In that the rear walls 16, 17 are positioned on the greater diameter of the connection pipes 9, 10,11, 12, the surface loading is reduced. Subsequently, nuts 22 are screwed over the outer threads of the connection pipes 9, 10,11, 12 so that the rear walls 16,17 of the hydraulic modules 2, 3 are pressed on the hot water storage tank 1 and are connected securely thereto. Finally, the connection pipes 9,10, 11,12 are connected to the pumps 18, 19 and the plate heat exchangers 20, 21 of the hydraulic modules 2, 3.

The secondary side of the plate heat exchanger 20 of the hydraulic module 2 is connected to a solar collector so that the hydraulic module 2 acts as a solar station. The secondary side of the plate heat exchanger 21 of the hydraulic module 3 is connected to industrial water lines so that the hydraulic module 3 acts as a fresh water station.

Consequently, the hydraulic piping can simultaneously be used as a fixing element. There is thereby not only a simple assembly method, but also better insulation of the hot water storage tank 1 is achieved since except for the piping no other thermal bridges extend through the insulation 15 in order to fix the hydraulic modules 2, 3 between the hot water storage tank 1 and the environment.

According to a variant which is not included by the invention, the lengthening connection pipes 9, 10,11,12 can be dispensed with if the hydraulic connections 5,6, 7, 8 have corresponding lengths. For sealing between the hydraulic connections 5, 6, 7, 8 and the connection pipes 9, 10, 11, 12, other sealing means (for example, hemp or Teflon tape) can also be used.

Rapid release couplings can also be used in place of threads for the hydraulic connection.

Claims

A hot water tank (1) surrounded by insulation (15) comprising at least one hydraulic module (2, 3) mounted thereon for the thermal filling and / or emptying of the container and a plurality of hydraulic connections (5, 6, 7, 8), passing through the wall (4) of the hot water tank (1), which hydraulic connections on the outside of the hot water tank comprise threads or lightning couplings for connecting the hydraulic module or modules (2, 3), where connecting pipes (9, 10, 11, 12) are connected to the hydraulic connections (5, 6, 7, 8) by threads or quick-release couplings, in which the connecting pipes (9, 10, 11, 12) on the side opposite the hydraulic connections (5, 6, 7, 8) also have threads or lightning couplings, wherein each hydraulic module (2, 3) has a rear wall and at least two passages in the rear wall which are arranged so that the rear wall of the hydraulic module (2, 3) can be placed over at least two connecting pipes (9, 10, 11). , 12) and screwed or fastened in front various ways by means of nuts or quick couplings on the connecting pipes (9, 10, 11, 12), characterized in that the insulation (15) has recesses at the site of the hydraulic connections (5, 6, 7, 8) and the connecting pipes (9, 10, 11, 12) pass through the insulation (15).

A hot water tank (1) comprising at least one hydraulic module (2, 3) mounted thereon for the thermal filling and / or discharge of the container according to claim 1, characterized in that the thread of the connecting pipes (9, 10, 11, 12) or the hydraulic connections (5, 6, 7, 8) are broken respectively by a radial groove (13) and a radial seal (14) is arranged in the radial groove (13).

A hot water tank (1) comprising at least one hydraulic module (2, 3) mounted thereon for the thermal filling and / or discharge of the container according to claim 1 or 2, characterized in that the connecting tubes (9, 10, 11, 12) have a smaller diameter at the side assigned to the hot water tank (1) than at the point where they pass through the rear wall of the hydraulic module (2, 3).