FR2685453A1 - IMPROVEMENTS IN HEATING CIRCUITS AND THE LIKE WITH HOT WATER AND THEIR COMPONENTS. - Google Patents

Abstract

This is a modular hot water circuit element to be interposed between a heat generator (12) and a receiving member (21, 24) capable of exploiting the heat transferred by the water. This element comprises two identical rectilinear tube sections (1, 2) of relatively large diameter terminated by flanges (3, 4; 5, 6), a rigid spacer structure (7) connecting these two sections together so that 'they are arranged parallel to each other with the terminal planes of their flanges coplanar two by two, a pipe (8) extending between the two sections and of smaller diameter than these, and hydraulic equipment comprising at least one pump circulation (17, 29) mounted on said pipe.

Description

Improvements in heating circuits and the like

  hot water and their components.

  The invention relates to circuits intended to be connected between the hot water outlet and the relatively cold water return of a boiler for the purposes of

  local distribution of said hot water in receptacles

  teurs able to use the calories transferred by

this water.

  Such receivers are in particular: the primers of heat exchangers suitable for heating hot water tanks intended for domestic drawing, in particular for the toilet, the kitchen, the primers of water-air heat exchangers intended for air heating or the radiators of a heating installation

central heating with hot water.

  In the currently known embodiments of circuits of the kind in question, these are manufactured and mounted individually on demand, depending on the characteristics of the installations to be established, which is

long and expensive.

  The object of the invention is, above all, to simplify the manufacture and assembly of circuits of the kind in question by grouping together some of their constituent elements in the form of modules suitable for

  mass production and ex-assembly

very simple.

  To this end, the circuits of the genre in question,

  intended to be adapted on the coplanai-

  res of two flanges connected respectively to the hot water outlet of a calorie generator and to the relatively cold water return to this generator, are essentially characterized according to the invention in that they comprise: on the one hand, at least one module comprising two identical rectilinear tube sections of relatively large diameter terminated by flanges, a rigid bracing structure interconnecting these two sections so that they are arranged parallel to each other with the end planes of their coplanar flanges two by two, a pipe extending between the two sections and of smaller diameter than these, and hydraulic equipment comprising at least one circulation pump mounted on said pipe, and, on the other hand, a tubular connection in U having a diameter equal to that of each of the above sections and terminated by two flanges adaptable to the two flanges located on the same side of a module t and that

defined above.

  In the most general case, each circuit

  includes a plurality of modules as defined above

  above, the respective tubular sections of which are connected in series at their flanges so as to form together two rigid parallel rectilinear tubes extending between the calorie generator and the U-shaped connection. With regard to the hydraulic equipment comprised by the modules of the kind in question, they are advantageously arranged in one or the other of the following two ways, depending on whether the module in question is intended for hot water or central heating: in the first case, the equipment mounted on the pipe comprises in series a circulation pump, a non-return valve and the primary circuit of a heat exchanger, in the second case, the equipment mounted on the pipe comprises a three-way valve of which said pipe constitutes two of the three channels, namely a first channel connected to the tubular section of hot water and a second channel connected to the tubular section of cooled water, a first branch Ie of a circulation pump, one end of which constitutes the third way of the valve and the other end of which constitutes a hot water starting block suitable for being connected to the upstream end of a central heating pipe

  comprising at least one radiator, and a second bypass

  tion, one end of which is connected to a point on the portion, of the above pipe, constituting the second way of the valve and the other end of which constitutes a chilled water return stud suitable for being connected to the end downstream of the above central heating pipe.

  The invention also relates to each of the modules below.

defined above.

  It includes, apart from these main provisions, certain other provisions which are used

  preferably at the same time and which will be more ex-

plicit question below.

  In the following, some preferred embodiments of the invention will be described with reference to

  drawing appended hereto in a way of course not limited to

tive.

  Figure 1 of this drawing shows very schematically

  only a module constituting a heating circuit

  or similar to hot water according to the invention.

  Figure 2 is the diagram of such a circuit

comprising several such modules.

  In general, it is proposed to construct a circuit intended to distribute the calories from a hot water source for drawing and / or heating purposes using modules which are easy to mass produce and to assemble.

on the spot.

  To this end, each module of the type in question is made to understand: two identical tubular sections 1 and 2 rectilinear and of relatively large diameter, terminated by flanges, respectively 3.4 for section 1 and, 6 for section 2, a rigid bracing structure 7 interposed between the two sections 1 and 2 so as to assemble them one on the other with their axes parallel to each other and the flat end faces of their coplanar flanges two by two as visible in the figure 1, a pipe 8 of smaller diameter than the sections 1 and 2 capable of making these two sections communicate with each other, and a device 9 mounted on said pipe 8. The modules M thus defined are intended to be assembled one on the other step by step, with their sections 1 juxtaposed axially and their sections 2 also juxtaposed axially, the sections thus juxtaposed forming two parallel tubes, as can be seen in the figure 2, which extend between a source of calories 10 and a terminal connector 11 in U. The "relatively large" diameter of the sections 1 and 2 is advantageously of the order of 100 mm (or 4 inches), but can be very lower, and for example of the order of 75.50 or even 25 mm, in particular for the modules, of the loop formed, the most distant from the heat source, the assembly flanges having to be understood

harmonized in all cases.

  The bracing structure 7 can be formed by profiles, plates, tubes, etc. It advantageously comprises adjustment means making it possible to vary the distance between the axes of the two sections 1 and 2 very slightly so as to compensate for the play of tolerances . The heat source 10 itself comprises a tube 12 of diameter identical to that of the sections 1

  and 2, serving a boiler 13 and a circulation pump.

  tion 14, the two ends of the tubing 12 are ter-

  undermining by two flanges D and R corresponding respectively

  at the start of the hot water and at the return of the cooled water.

  The boiler 13 can itself consist of a group of generator elements, the different elements of which can be put into automatic operation.

  according to needs, these elements can themselves

  same be manufactured as modules (not shown

  mutually assemblable, in particular at the level of

  flanges similar to those described above.

  Each of the two flanges D and R has coplanar end faces and a center distance E identical to that which separates the sections 1 and 2 of each module so that the two flanges D and R can very easily be connected to two flanges 3 and 5 located on the same side of any module M. As for the U-shaped connector 11, it also ends in two flanges 15 and 16 very easily adaptable to two flanges 4 and 6, of any module M, located on the opposite side from where the two are

flanges 3 and 5.

  The set of modules M thus forms with the connector 11 and the tubing 12 a first closed loop of relatively large diameter in which the tube formed by the sections 1 is traversed by the water heated by the source of calories 10 and coming from the start. D while the tube formed by the fittings 2 corresponds to the return of

  the water cooled to the upstream end R of this genera-

  tor. Of course, to make it possible to put the different modules into service or out of service, it is advisable to mount isolation valves at the upstream and downstream ends of the pipe 8. Such valves have been shown diagrammatically in phantom in V in FIG. 1 and no

  shown in Figure 2 for the sole purpose of simpli-

proud of the design.

  As for the equipment 9 mounted on the pipe 8 of each module M, its constitution depends on

  the destination assigned to the module concerned.

  In a first case, illustrated on the left-hand portion of FIG. 2, it is assumed that the module considered is intended for drawing hot water, for example for

the toilet and the kitchen.

  In this case, the equipment 9 comprises, mounted in series on the pipe 8, a circulation pump 17, a non-return valve 18 oriented so as to allow the circulation of water only in the direction of the section 2, and the

  primary 19 of a heat exchanger 20.

  The secondary 21 of this exchanger is arranged so as to heat the water contained in a tank 22 and intended for drawing hot water using taps

23.

  The operation of such a "drawing" module is

the following.

  As long as the pump 17 is stopped, no water flow is observed in the pipe 8 and therefore in the primary 19 of the exchanger 20 When the temperature prevailing in the tank 22 becomes insufficient, in particular at following a drawing at a tap 23, the pump 17 is automatically put into operation, which circulates 1 hot water from the section 1 in the primary 19 of the exchanger and from there to the section 2 and towards the return end R disposed upstream of the

  tubing 12 forming part of the calorie source.

  When the temperature of the water in the tank 22 again exceeds a threshold considered to be sufficient,

  the pump 17 is again stopped.

  In the second envisaged application case, illustrated in the central part of FIG. 2, it is assumed that the module is assigned to supplying calories to a central heating pipe 24

serving radiators 25.

  In this case, the pipe 8 is composed of three strands, namely: a first strand 26 whose upstream end is connected at 27 to the section 1 and whose downstream end defines the hot water start terminal d intended for be connected to the upstream end of line 24, said strand being equipped with a three-way valve 28 of which it itself constitutes two ways a and b and a circulation pump 29 mounted so as to drive the water to terminal d, a second strand 30 connecting a return terminal r intended to be connected to the downstream end of the pipe 24 at a point 31 of connection on the section 2, and a third bypass strand 31, one end of which is connected at 32 to the strand 30 and the other end of which forms the third channel c of the three-way valve

tracks 28.

  This valve 28 is associated with control means making it possible to connect to track b either the track a alone, or the track c alone, or partially the two tracks a and b in adjustable proportions, preferably

  automatically and for example depending on the temperature

  ambient temperature prevailing in the premises to be heated.

  The operation of this "heating" module is

the following.

  During a heating period, the pump 29 is put into continuous operation and this is the position

  of the three-way valve 28 which is advantageously controlled-

  ment at room temperature of the room heated by the radiator 25, said valve 28 providing a connection

  exclusive between the two channels a and b when the temperature

  The water circulating in the radiator 25 is insufficient.

  fisante and, on the contrary, an exclusive connection between the two channels c and b as long as said temperature exceeds a predetermined threshold, any intermediate solution with

  sending to channel b of mixtures of water flows from

  from the two routes a and c which can be envisaged for

intermediate temperatures.

  As a result of this, and whatever the embodiment adopted, there are finally heating circuits or the like with hot water, the constitution and operation of which result sufficiently from the above. These circuits have many advantages over those previously known, in particular in that their design in modules makes possible, on the one hand, mass production and, on the other hand, extremely simple on-site assemblies, since these assemblies simply involve the establishment of tight connections at the flanges mutually juxtaposed sections 1 and 2 against the adjacent flanges included either by other modules, or (D, R) by the heat source 10, or (15 , 16) by the U-shaped connector 11, the loop (1,11,2,12) thus formed is then completed, that is, for each drawing module, by adaptation, on the primary circuit (19) of this module, of the secondary circuit (21) of the exchanger (20) concerned, or, for each heating module, by connection, on the pads awaiting (d and r) of this

  module, the heating pipe (24) concerned.

  As is obvious, and as already follows from the foregoing, the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all variants, in particular those where the two flanges (D, R) of the calorie generator would not be placed near a boiler, as in the diagram in FIG. 1, but connected to the terminals of such a boiler by thermally insulated pipes which can extend over several floors, as is the case for supplying hot water (drawing and heating) to a building of several floors from a group

unique calorie generator.

Claims (4)

  1 modular element of the hot water circuit to be interposed between a calorie generator and a receiving member capable of exploiting the calories transferred by the water, characterized in that it comprises two identical rectilinear tube sections (1,2) of relatively large   diameter terminated by flanges (3.4; 5.6), a structure   rigid bracing structure (7) connecting these   two sections so that they are arranged parallel-   lying between them with the end planes of their coplanar flanges two by two, a pipe (8) extending between the two sections and of smaller diameter than these, and hydraulic equipment (9) comprising at least one   circulation pump (17,29) mounted on said pipe.   2 Modular circuit element according to the res   dication 1, characterized in that the equipment (9) mounted on the pipe (8) comprises in series a circulation pump (17), a non-return valve (18) and the circuit   primary (19) of a heat exchanger (20).   3 Modular circuit element according to the res   dication 1, characterized in that the equipment (9) mounted on the pipe (8) comprises a three-way valve (28) whose said pipe constitutes two of the three ways, namely a first way (a) connected to the tubular section d hot water (1) and a second channel (c) connected to the tubular section of cooled water (2), a first bypass   equipped with a circulation pump (29), one of which   end constitutes the third channel (b) of the valve and the other end of which constitutes a hot water starting point (d) suitable for being connected to the upstream end of a central heating pipe (24) comprising at minus a radiator (25), and a second branch, one end of which is connected to a point (32) of the portion, of the above pipe, constituting the second channel (c) of the valve and the other end of which constitutes a chilled water return stud (r) suitable for being connected to the downstream end of the above-mentioned pipe central heating.   4 Hot water circuit intended to be adapted to   the coplanar end faces of two flanges (D, R)   strung respectively at the hot water outlet of a   calorie generator (10) and relative water return-   cold to this generator, characterized in that it comprises: on the one hand, at least one modular element (M)   according to any one of claims 1, 2 and 3, of which   two flanges (3,5) located on the same side are connected to the two flanges (D, R) above; and, on the other hand, a U-shaped tubular connection (11) having a diameter equal to that of each of the sections of the modular element and terminated by two flanges (15,16) connected to the two flanges (4,6) of this element located on the side, of said element, opposite to that o are the two flanges above (3.5).