HU218695B - Modular gas water heater, heating unit and twin heating unit - Google Patents

Abstract

The invention is a modular gas boiler with heating modules (4) or twin heating modules, which are connected between the forward and return pipes (2, 3), in which the heating modules (4) or twin heating modules are connected in parallel between the forward and return pipes (2, 3), the forward and return (2 , 3) pipe is also directly connected with a bridging pipeline (13). The invention is also a heating module, which heating module (4) contains two or more elemental boilers (6), a circulation pump (7) and automatic temperature control, which elemental boilers (6) form part of the heating module (4) and are suitable for the installation of a heating circuit, opening into a connecting pipe at both ends, they are connected to inlet and outlet collection pipes (9, 10). According to the invention, the heating module (4) has two connection pipes (11, 12) arranged parallel to each other, open at both ends, where one of the connection pipes (11) has the inlet collection pipe (9) of the elemental boilers (6), and the other connection pipe (12) has the elemental boilers ( 6) the outgoing collection tube (10) opens. The invention is also a twin heating module, both modules of the twin heating module contain two or more elemental boilers (6) and circulation pumps (7), which elemental boilers (6) are part of the twin heating module, suitable for inclusion in a heating circuit, open at both ends into a connecting pipe, and connected to an inlet and outlet collector pipe, which is a twin heating module (5) each module has a total of two open connection pipes arranged parallel to each other and open at both ends. According to the invention, the inlet manifold (9) of the elementary boilers (6) of both modules is connected to one connecting pipe (11), and the outlet manifold (10) of the elementary boilers (6) of both modules is connected to the other connecting pipe (12). ŕ

Description

The present invention relates to a modular gas boiler with heating modules or twin heating modules. The invention further relates to a heating unit comprising two or more elementary boilers, a circulating pump and a temperature control automation, the elementary boilers being connected to the inlet and outlet of the heating element, which is connected to a heating pipe and is connected to an open connection pipe at both ends. The invention further relates to a twin heater module, each module of a twin heater module comprising two or more elementary boilers and a circulating pump, which element is a part of the heater module, which is connected to a heating circuit, a total of two connection pipes arranged in parallel and open at each end.

Modular gas boilers have been in use for decades because this modular system enables the assembly of modules with constant heat capacity to meet different power requirements and to adapt the boiler to later changes in demand.

Such a modular gas boiler is described, for example, in French Patent No. 2,224,711. The system described therein is still practically unchanged at present, as reflected in the FÉGTHERM "FÉG-VESTALE Regular Module Boiler Design Reduced Height" 1996, according to which the boiler modules are connected in series as in the solution described in the above patent.

The heating modules of French Patent No. 2,224,711 include three to three elemental boilers, a circulating pump and a temperature control automaton, which are part of the heating module and are suitable for insertion into a heating circuit, and are connected to a connection pipe on both ends. With open connection pipes at each end connected to each other, the heating modules suck up the water to be heated from the same manifold manifold as they are fed back slightly after being heated slightly along the length of the pipe section. The heating water circulated through a single distribution manifold at the bottom of the heating module, for example, circulates in the heating network of a building. The number of heating modules connected in series is selected depending on the heat demand of the heating system, for example five. In this case, each heating module raises four degrees at the temperature of the heating water passing through the manifold, so that only one-fifth of the water flowing through the manifold flows through a heating module (its elemental boilers) which flows through the heating module 20. It raises the temperature by ° C and mixes the heated water with the remaining 4/5 of the heating water flowing through the manifold. One fifth of the water thus heated at 4 ° C goes to the next heating module. The heat transfer systems are usually designed for 90 ° C / 70 ° C, which means that the heating water flow from the boiler is 90 ° C and the temperature of the water returned to the boiler is 70 ° C. It is easy to see that the heating modules connected in series operate in different temperature ranges:

while the first stage operates between 70 ° C and 90 ° C (heating the water mass to 74 ° C), the fifth stage operates between 86 ° C and 106 ° C (the water mass heating from 86 ° C to 90 ° C) ). Up to ten heating modules can be assembled in a gas boiler plant, in which case the final stage elementary boilers will operate in the temperature range of 88 ° C / 108 ° C.

The heating modules of the modular gas boilers may be arranged in pairs, reversed to each other, forming a U-shaped flow / return pipe section, where the heating modules are associated with a double-deep mechanical module. Each heater module is built in the same way as described above, so it draws water back to the same (own manifold) connection pipe from which it was taken, so that the heater modules are connected in series.

The drawbacks of the above known solutions are in part due to the fact that the heating modules can be used as stand-alone gas boilers, which are designed according to the heating system 90 ° C / 70 ° C. Longer exposure to significantly higher temperatures reduces their service life. Higher temperature heating water has poorer heat absorption capacity, so the boiler's heating efficiency is lower. At higher heating water temperatures, there is a greater risk of scaling, which, together with contaminants in the heating system, can lead to blockage of elementary boilers. Warmer water reduces the relative cooling effect required to set the boiler's thermal balance. Due to the varying heating water temperature per module, temperature control automation that is set to several temperatures would be required. For the sake of uniformity, the modules are usually only controlled for temperature differences, since the cost of purchasing, manufacturing and servicing the various types of control and safety thermostats would be high.

Roof boilers for residential and public buildings use hot water boilers with variable power ranges. For these, a separate heat center must be set up to provide the required weather-dependent heating water temperature and domestic hot water supply. The heat demand varies so widely that there is no boiler selection that can reasonably meet all heat demand.

For this purpose, boiler plants produced by parallel switching of several boilers are also used. This is the case, for example, in the Hungarian Patent No. 200,630, which solves the heat demand by using a complicated control system and using a mixing valve. The disadvantage of this solution, and all parallel boiler arrangements known to us, is that due to the main circuit circulation pump, even inoperative elementary boilers continuously return the heating medium, which results in heat loss and efficiency degradation. Another disadvantage is that the relatively high unit power boiler elements represent high stages in the heat supply, thus the heat demand is imperfect, many boilers are switched on and off, time fluctuates, in each case the heat loss is increased and the flue gas emissions are increased. .

HU 218,695 Β

SUMMARY OF THE INVENTION It is an object of the present invention to overcome these shortcomings of the prior art by providing a modular gas boiler, heating module, and twin heating module that provide unambiguous control conditions, achieve better efficiency than before, and fine-tune power requirements.

SUMMARY OF THE INVENTION The object of the present invention is to provide a modular gas boiler, heating module or twin heater module in which the heating modules or twin heater modules are connected in parallel between the flow and return pipes and the flow and return pipes are connected by bridging pipes.

Preferably, the flow pipe and the return pipe are arranged parallel to each other and connected in a U-shape to the bridging pipe, between which there are running modules or twin-heating modules between the two legs of the U-shape.

The present invention further provides a heating module comprising two or more elementary boilers, a circulating pump and a temperature control automation, the elementary boilers of which are connected to, connected to, and connected to a conduit for opening into a heating circuit. According to the invention, the heating module has two parallel connection pipes open at both ends, one of which connects the inlet manifold of the elementary boilers and the other manifold is the outlet manifold of the elementary boilers.

The invention further provides a twin heater module, each module of a twin heater module comprising two or more elementary boilers and a circulating pump, the elemental boilers being part of a heater module, for insertion into a heating circuit, connected to a , has a total of two connection pipes arranged in parallel and open at each end. According to the invention, one connection pipe is connected to the inlet manifold of both module elementary boilers and the other connection pipe is connected to the outlet manifold of elementary boilers of both modules.

Preferably, one module of the twin heater module is directly connected to the outlet manifold and the other module to the inlet manifold, the inlet manifold of one module is connected to the inlet manifold of the other module and the outlet manifold of the other module.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the following examples. In the drawing it is

Figure 1 is a block diagram of a heating module, a

Figure 2 is a block diagram of a modular gas boiler, a

Figure 3 is a block diagram of a gas boiler composed of twin heating modules.

The construction and operation of the gas circuit, the temperature control automatics of the pipes referred to in the detailed description of the invention are water pipes, heating modules and the gas boiler as a whole and do not form part of the invention.

The heating modules 4 shown in Fig. 1 can be used to assemble, for example, the modular gas boiler of Fig. 2. The heating module 4 is comprised of two or more - in this example, three elementary boilers 6, which are connected parallel to one another within the heating module, inserted between a common inlet manifold 9 and a common outlet manifold 10. Each of the 6 elementary boilers has a 7 circulation pump. The heating module 4 has two connection tubes 11, 12 which are open at both ends and provided with connecting sleeves, arranged in parallel to each other. One inlet pipe 11 is connected to the inlet manifold 9 and the other outlet pipe 12 is connected to the outgoing manifold 10. The connecting pipes 11, 12 of the heating modules 4 forming the boiler according to Fig. 2 form a section of a flow pipe 2 and a return pipe 3 respectively (Fig. 1). In the connection pipe 12, in the vicinity of the collector outlet pipe 10, a temperature sensor 15 of the temperature control automation is arranged.

The heating module 4 according to Fig. 1 is designed according to a standard heating system of 90 ° C / 70 ° C. Only a portion of the heating water flowing through the elemental boilers 6 of the heating module 4 flows through the tubes 2, 3, each of the elemental boilers 6 having substantially the same intensity, and each of the elemental boilers 6 typically raises by 20 ° C. Since the elemental boilers 6 are arranged in parallel between the two manifolds 9,10, the temperature difference between the water entering the manifold 9 and the manifold 10 is also 20 ° C. This water in the tube 2 is added to the water heated at the same temperature in the other modules.

The modular gas boiler shown in Figure 2 comprises four heating modules 4. The open conduits 11 at each end of the heating modules 4 are connected in one end and form a continuous return pipe 3, the other connection pipes 12 of the heating modules 4 are similarly connected and form a continuous flow pipe 2. In order to prevent a non-boiler recirculation pump from interfering with the operation of the heating modules, the free end of the connecting pipes 11, 12 is connected to the bridging pipe 13, so that the connecting pipes 11, 12 form a U-shaped end the heat consumer (heat exchanger or directly to the building's central heating network) is connected.

Figure 3 shows a modular gas boiler with twin heating modules 5. The open connection pipes 11 at each end of the twin heating modules 5 arranged in a row form a continuous return pipe 3 (Fig. 1), the other connection pipes 12 of the twin heating modules 5 are likewise connected and are continuous in the flow pipe 2 (Fig. 1). section. The free end of the connecting pipes 11,12 is connected to the bridging pipe 13, so that the connecting pipes 11, 12 form a U-shape which is connected to the open stem ends of the U-shape by the heat consumer (heat exchanger or directly to the building's central heating network). The twin heater module 5 consists of two back-mounted modules 14, 14 ', each module having a heater module 4

EN 218 695 Β with respect to the arrangement of the elemental boilers and of the pumps circulating the water on them and their heat output. Each module has only one connection pipe 11 or 12 open at each end. The inlet manifolds 9, 9 'of the two modules 14, 14' forming the twin heater module are interconnected and terminate in an all connection pipe in the return module 3 on the side module 14 '. The output manifolds 10, 10 'of the two modules 14, 14' forming the twin heater module are interconnected and extend into the connection pipe 12 in the module 14 of the flow pipe 2.

With respect to the heating modules, the return pipe 3 (Fig. 2) is a manifold in function of the connecting pipe 11 and the pipe 12 in the gas boiler configuration of both Fig. 2 and Fig. 3.

The amount of water passing through the elementary boilers is always based on the ratio of the total flow of water to be heated according to the number of heating modules (and elementary boilers). 4 parts pass through. The heat output of the elementary boilers of each module is constant;

The operation of the modular gas boiler of the present invention will be described in detail below.

Each elementary boiler in each heating module has a temperature controller like any commercially available, custom-built gas boiler in the home, so it is relatively small, lightweight, low power, reasonably priced, easy to replace, repair, and mature. Each heating module consists of several parallel-connected elementary boilers, which allows fine-tuning of power output.

The upstream and downstream pipes 3 of the composite gas boiler of the heating modules are connected by a bypass pipe, even the entire liquid stream can flow through the direct connection, so that only a portion of the liquid stream passes through the operating elemental boilers fed by the boiler pump. At the given moment, no running water passes through a non-heating elemental boiler, so there is no heat loss.

The advantage of the present invention over the known ones is that the losses can be smaller, thus providing better efficiency, the design of the running modules allows for finer control and less switching, which also results in a reduction in the amount of pollutant in the combustion product. The design of the heating modules according to the invention allows the running water to avoid the simple solution of direct connection of the heating module, the heating water, the simple construction, repair and modification of the modular gas boiler.

Claims (5)

PATENT CLAIMS A modular gas boiler with heating modules (4) or twin heating modules (5), the running modules (4) or twin heating modules (5) being connected in parallel between the flow and return pipes (2, 3), characterized in that the flow and return (2) 3) The pipe is directly connected to the bridging pipe (13). Gas boiler according to Claim 1, characterized in that the supply and return pipes (2,3) are arranged parallel to each other and connected in a U-shape to the bridging pipe (13), the runner modules (4) being located between the two arms of the U-shape. or twin heater modules (5) are installed. A heating module for use in a modular gas boiler according to claim 1 or 2, comprising a heating module (4) comprising two or more elementary boilers (6), a circulation pump (7) and a temperature control automation, the elementary boilers (6) ), which is connected to a connecting pipe (11, 12), open to both ends, for connecting to a heating circuit, characterized in that the heating module (4) is arranged in parallel and open at both ends. a connecting pipe (11, 12), wherein one of the connecting pipes (11) extends to the inlet manifold (9) of the elemental boilers (6) and the other connecting pipe (12) to the outgoing manifolds (10) of the elementary boilers (6). A twin-heating module for use in a modular gas boiler according to claim 1 or 2, wherein each module (14,14 ') of the twin-heating module (5) comprises two or more elementary boilers (6) and a recirculation pump (7). ) are connected to the inlet and outlet manifolds (9, 9 ', 10, 10') of the twin heater module (5) for connection to a heating circuit, open at both ends, to the twin heater module (5) per module (5). 14, 14 ') having a total of two parallel connection pipes (11, 12), open at both ends, characterized in that the inlet manifold of the elementary boilers (6) of both modules (14, 14') in one connection pipe (11) (9, 9 '), the outgoing manifold (10, 10') of the elemental boilers (6) of both modules (14, 14 ') is connected to the other connection pipe (12). A twin-heating module according to claim 4, characterized in that in one module (14) the outlet manifold (10) and in another module (14 ') the inlet manifold (9') is directly connected to the connection pipe (11, 12) of the module. , the inlet manifold (9) of one module (14) being configured to be connected to the inlet manifold (9 ') of the other module (14'), the outlet manifold (10) of the other module (14 ').