EP1026448A1 - Perfectionnement aux appareils générateurs d'eau chaude sanitaire et d'eau de chauffage central - Google Patents
Perfectionnement aux appareils générateurs d'eau chaude sanitaire et d'eau de chauffage central Download PDFInfo
- Publication number
- EP1026448A1 EP1026448A1 EP00400186A EP00400186A EP1026448A1 EP 1026448 A1 EP1026448 A1 EP 1026448A1 EP 00400186 A EP00400186 A EP 00400186A EP 00400186 A EP00400186 A EP 00400186A EP 1026448 A1 EP1026448 A1 EP 1026448A1
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- EP
- European Patent Office
- Prior art keywords
- exchanger
- direct
- primary
- balloon
- direct exchanger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
- F24D3/082—Hot water storage tanks specially adapted therefor
Definitions
- the invention relates to domestic hot water generators and central heating water, implementing the combustion of a gas.
- the balloon and the direct heat exchanger counter current of the auxiliary heat exchanger are in series, so that the direct exchanger is mounted downstream from the tank on the heating circuit hot water from the main exchanger tubing passing through a primary loop of the auxiliary heat exchanger which is drowned in the balloon before reaching the primary of the direct exchanger against a current.
- the direct countercurrent exchanger can be of a compact plate type, and can be embedded inside the ball.
- the problem underlying the invention is to perfect an apparatus hot water generator of the type presented above and known from the documents mentioned above, and in which the direct counter-current exchanger is a plate heat exchanger essentially arranged inside the tank, simplifying the design of the hydraulic assembly of such an apparatus for, on the one hand, facilitate the assembly and maintenance of this hydraulic assembly, and, on the other share, obtain that the functions of such a hydraulic assembly are fulfilled more economically.
- the hot water generating device is characterized in that the primary of the direct heat exchanger plates is supplied with hot water from the tubing of the main exchanger, that is to say without the intermediary of a loop embedded in the balloon and belonging in the primary of the auxiliary heat exchanger, and in that the primary of the direct plate heat exchanger comprises at least two lateral channels extreme, adjacent to two external and opposite side walls of the direct exchanger, at the lateral ends of all the demarcated channels between the substantially parallel plates of the direct exchanger, so that the water in the primary of the direct exchanger is in heat exchange relation with the water from the drawing circuit, on the one hand, in the balloon and around the direct exchanger, by convection through said external walls of the direct exchanger which are in direct contact with the water in the drawing circuit in the tank, to perform the functions of reheating and maintaining temperature of the sanitary water in the tank, and, on the other hand, in at least one secondary channel of the direct exchanger, extending between said lateral channels, the secondary
- An advantage of the apparatus according to the invention is that excellent performance maintaining the temperature and reheating the domestic water balloon, when restarting after a complete shutdown of the device, can be obtained by the fact that the two extreme channels of the exchanger with plates, adjacent to the external and opposite lateral walls of this exchanger, belong to the primary of this exchanger and must be irrigated by hot water from the main exchanger tubing, possibly via the three-way valve, which ensures direct heat transfer through these two external walls of the exchanger at plates, by forced convection on the internal side of these walls, by circulation hot water from the domestic heating circuit when the circulation pump works, and by free convection on the side external to these walls, in the sanitary water contained in the tank.
- the direct heat exchanger plates includes a set of plates provided with reliefs on their two lateral faces and which are joined and brazed to each other at least the along their periphery, and so as to delimit between the plates of the channels of the primary and secondary direct exchanger, each secondary channel extending between two primary channels, and the two plates at the ends of the set of plates constituting the external side walls of the direct exchanger.
- the plates of the direct exchanger of sufficient dimensions, generally slightly more larger than those of the plates used in the case of a direct heat exchanger plates outside the ball.
- the direct exchanger is supported in the flask at least by three rigid tubes sealingly crossing the wall of the tank, and a first tube of which connects the domestic heating circuit at the entry of the primary of the direct exchanger, in an end part of said direct exchanger in which the secondary outlet also opens of said direct exchanger, the second and third tubes respectively connecting the output of the primary and the secondary input of the direct exchanger, in the opposite end part of said direct exchanger, to the heating circuit and the draw-off water circuit respectively.
- This embodiment requires the direct exchanger to be installed in the tank before closing the latter, so that the plate heat exchanger assembly is not easily removable or even non-removable.
- the direct plate exchanger is supported in the flask by at least two flanges each connected with tightness to one respectively of two opposite parts of the wall of the ball which are each pierced with an opening, each of the two flanges supporting one respectively of the two opposite end portions of said direct exchanger, a first flange also participating in the sealed connection between the circuit sanitary heating and the primary heat exchanger inlet direct, and putting in communication the secondary outlet of said direct exchanger with inside the balloon, and the second flange ensuring a tight connection between, on the one hand, the output of the primary of said direct exchanger and the heating circuit sanitary, and, on the other hand, the secondary entrance of said direct exchanger and the drawing water circuit.
- the direct plate heat exchanger can be pre-mounted on two flanges at the ends of the exchanger, then the assembly can be introduced into the tank through one of the wall openings and fixed by the flanges on the wall of the ball.
- the first flange substantially envelops the part corresponding end of the direct exchanger inside the tank, and includes a sealed connection tip at the inlet of the primary of said exchanger direct, said connecting end piece being engaged with sealing in a room support, supporting the first flange and attached with sealing around a opening in the wall of the balloon, this support piece having a nozzle tight connection to the domestic heating circuit.
- the second flange substantially envelops the corresponding end portion of the direct exchanger and is directly attached with sealing around a opening in the wall of the tank for insertion of the direct exchanger into the balloon, and said second flange comprises two sealed connection ends, of which one ensures the connection between the primary outlet of the direct exchanger and the domestic heating circuit, and the other ensures the connection between the drawing water circuit and the secondary inlet of said direct exchanger.
- entry to primary and exit from secondary can be formed in an end part and on an external side wall of the plate heat exchanger, while the primary outlet and the secondary inlet are provided in the opposite end part of the exchanger and on the other external side wall of the latter.
- the direct exchanger is supported in the balloon by at least one flange substantially enveloping a end part of the direct exchanger, and tightly connected to a part of the wall of the tank which has a direct heat exchanger insertion opening in the ball, said flange comprising three sealed connection ends participating in the connections between the primary input and output and the input from the secondary of the direct exchanger to the respectively heating circuits sanitary and drawing water, as well as a communication passage between the secondary exit from the direct heat exchanger and inside the tank.
- the device thus has a removable direct balloon-exchanger assembly, the direct plate heat exchanger being pre-mounted on a flange at one end of the exchanger and the assembly can be introduced into the balloon by a insertion opening and fixed by the flange on the wall of the balloon, around the insertion opening.
- the flange advantageously comprises at least two flange parts fixed to each other by enclosing said part between them end of the direct exchanger, a first flange part comprising two sealed connection ends respectively at the outlet of the primary and at the secondary heat exchanger entrance, and the second flange part comprising a sealed connection end piece at the inlet of the exchanger primary direct, and a communication end of the secondary output of the direct exchanger with the inside of the tank, the two ends of the first flange part and the end piece of the second flange part being engaged with sealing each in one respectively of three ends of a support piece, supporting said flange parts and attached with sealing on the wall of the tank around the direct heat exchanger insertion opening in the tank, the end pieces of the support piece ensuring the watertight connection with the domestic heating circuit for the two end pieces which receive the end pieces sealing connection of the flange parts to the inlet and outlet of the primary from the direct exchanger, and with the drawing-off water circuit for the receiving nozzle the sealed connection end piece of the
- the direct exchanger can be supported cantilevered in the ball.
- the direct exchanger and the tank can be arranged substantially vertically, the first preferably at the bottom in the second, and so that the support piece constitutes a bottom of the balloon and includes means, such as a fourth tubular nozzle, for connection watertight with a partial domestic hot water collection tube high in the balloon, and with said drawing outlet.
- This embodiment is advantageously combined with the use of a plate heat exchanger with primary and secondary inputs and outputs are provided in a single end part of the direct exchanger, entering primary and leaving secondary advantageously leading in an external side wall of this direct exchanger, while the leaving primary and entering secondary advantageously lead into the opposite external side wall of this direct exchanger.
- the invention relates essentially to this auxiliary heat exchanger E.
- the tank 10 and the plate heat exchanger 14 are mounted as follows: the primary 15 of the plate heat exchanger 14, on the section 6 of the circuit DHW 4, 5, 6, is directly supplied by the tubing 4 of the main exchanger 2, through the three-way valve and two positions 21 (the function of which is explained below), when the valve 21 is in the position shown in Figure 1.
- the primary of the heat exchanger auxiliary E is therefore essentially constituted by the primary 15 of the plate exchanger 14.
- the secondary 9 of the heat exchanger auxiliary E it is made up in series, from upstream to downstream, i.e. the cold water inlet 7 to the hot water outlet 8, through the secondary 16 of the plate heat exchanger 14 and by the volume of water inside the tank 10 and around the plate exchanger 14, the secondary 16 outlet of the exchanger 14 emerging at a low point 12 directly in the balloon 10.
- the plate exchanger 14 is mounted upstream by relation to the tank 10 on the drawing circuit 7, 9, 8.
- the water cold sanitary entering the drawing circuit by the inlet 7 cross first the secondary 16 of the exchanger 14 then the internal volume of the tank 10, so that it is heated by thermal transfer between the primary 15 and the secondary 16 of the plate heat exchanger 14, and this heated domestic water is mixture with that contained in the flask 10 and then flows through the tube 11 to outlet 8 for domestic hot water.
- FIG. 1 several bodies or assemblies outside the casing 1 and also connected to the circuits described above are also shown.
- FIG. 1 also shows a safety valve 22, connected to the hot water outlet 8, a flow meter 23, mounted on the water inlet cold 7, and a temperature probe 24 mounted in the tank 10.
- the temperature probe 24 can be arranged in or at close to exit 12 of secondary 16 of the plate heat exchanger 14, and supported by the latter or by support and positioning parts of the exchanger 14 in the tank 10, and the probe 24 can be seconded by a another temperature sensor (not shown in Figure 1) in or near immediately from the entrance to secondary 16 of exchanger 14.
- the flow meter 23 and the probe (s) such as 24 are associated, as described in FR-A-2742214 and EP-A-0778450, has means for controlling the power heat released by the boiler 2-3-4 at the flow and temperature parameters detected, according to an advantageous mode of action described in the documents cited above, to which reference may be made for further details on this subject.
- the burner 3 is turned on operating at a maximum speed or at a reduced speed depending on whether the flow of water detected by the flow meter 23 is above or below a threshold of instructions.
- the tap 18 is closed, the burner 3 is off and the pump 5 stopped, and the tank 10 contains a supply of sanitary water at a sufficient temperature, for example of the order of 60 °, to meet the needs for drawing domestic hot water.
- the opening of tap 18 is of no consequence as long as the temperature of the water in the tank 10 remains above the set point.
- Hot water from tank 10 and drawn by the tube 11 is replaced by cold water coming from the inlet 7, so that the temperature of the water reserve in the tank 10 decreases gradually.
- the pump 5 is put into operation and the burner 3 lit, at a speed which depends on the drawing flow, detected by the flow meter 23, the power thermal released by the burner 3 being maximum or reduced depending on whether the threshold flow setpoint is exceeded or not by the drawing flow, the operation pump 5 and burner 3 as well as the circulation of hot water in the domestic heating circuit being maintained for the entire duration of the drawdown considered.
- the water from drawing first crosses secondary 16 of exchanger 14 before reaching in the tank 10, and, due to the higher temperature of the heating water passing through the primary 15 of the exchanger 14, the drawing water is heated in secondary 16 of exchanger 14 before its introduction into the tank 10, which does not substantially cool the domestic hot water in reserve in this tank 10, and the temperature of the domestic hot water drawn can remain at a sufficient value during all the drawing, and even beyond a drawing time corresponding to a total volume distribution in reserve in the tank 10.
- the location of the secondary 16 of the exchanger 14 upstream of the tank 10 on the domestic water drawing circuit not only minimizes the introduction of cold water into the tank 10, which is harmful the temperature resistance of the water reserve contained in this tank 10, but also avoids the risks of overheating of the drawn water, since the sanitary water leaving secondary 16 of the plate exchanger 14 is mixed with the water in reserve in the tank 10 before reaching the tap 18.
- the heating water circulating in the primary 15 of the exchanger 14 is never brought to a very high temperature, which avoids risks scaling of primary 15, because in the absence of drawing, the burner appearance 3 is moderate when in use, and calories from the main exchanger 2, 3, 4 are mainly distributed to sanitary water in the flask 10 by heat exchange with the heating water in the primary 15 of exchanger 14, through the external walls of this exchanger 14, while in drawing mode, the burner 3 has a moderate pace or maximum, the calories from the main heat exchanger 2, 3, 4 are mainly transmitted to sanitary water in the secondary of exchanger 14, by thermal transfer from the heating water in the primary 15 of this exchanger 14, a calorific contribution limited to the water in the remaining tank 10 provided through the external walls of the exchanger 14.
- the plate exchanger 14 of FIGS. 2a and 2b comprises an assembly of six plates 26a to 26f of the same rectangular external shape elongated at rounded corners made of a metal or alloy that is a good heat conductor, each plate having, on its two lateral faces, reliefs made up of ribs and V-shaped grooves alternately and in succession, so as to draw rafters.
- the six plates are placed next to each other so as to form five channels 27a to 27e, each of which is delimited between the two opposite faces of two neighboring plates on the whole.
- Channels 27a to 27e are easily visible in Figures 2a and 2b, showing the heat exchanger exploded perspective plates, with plates 26a to 26e slightly apart each other.
- each plate 26a to 26d are each pierced with an upper orifice 30 and a lower orifice 31, the two ends of the plate 26e not having each an upper orifice 30, and the plate 26f having no orifice.
- the plates of the assembly are joined and brazed to each other along their periphery to close the channels 27a to 27e vis-à-vis the outside of the exchanger, and so as to establish a watertight communication all the upper holes 30 between them and only with the lateral channels extremes 27a and 27e and the central channel 27c to form the primary of the plate heat exchanger 14, on the one hand, and, on the other hand, so as to connect from sealingly all the lower openings 31 between them and with the two channels intermediate 27b and 27d, to form the secondary of the exchanger at plates 14, each secondary channel 27b or 27d thus extending between two channels 27a and 27c or 27c and 27e of the primary, including the lateral channels 27a and 27e, at the lateral ends of the exchanger 14, are directly adjacent each to one of the plates 26a and 27f respectively, at the ends side of the assembly, and constituting the external and opposite side walls of the exchanger 14.
- the inputs and outputs of primary 15 and secondary 16 of the exchanger 14 are formed in the same external lateral wall 26a of the exchanger 14, the inlet of the primary 15 and the outlet of the corresponding secondary 16 respectively at the holes 30 and 31 in the end 28 of the plate 26a, and the output of primary 15 and the input of secondary 16 corresponding respectively to orifices 30 and 31 in the end 29 of this same plate 26a, since primary 15 and secondary 16 are against the tide, as indicated schematically by the arrows in Figure 2a.
- This figure 2a represents the plate exchanger 14 in heating mode direct domestic water circulating in secondary 16 (channels 27b and 27d) by the heating water coming from the tubing 4 and circulating in the primary 15 (channels 27a, 27c, 27e).
- FIG 2b shows the plate heat exchanger 14 in holding mode in temperature and heating of the domestic water in the tank 10 by circulation warming water from tubing 4 in primary 15 (channels 27a, 27c, 27e) in the absence of domestic water circulation in the secondary 16.
- This heat exchange results from forced convection by circulation of heating water in the end channels 27a and 27e towards the side walls 26a and 26f, and a free convection, shown schematically by other arrows in Figure 2b, between these walls 26a and 26f and the water in the balloon 10, due to the direct contact of these external walls 26a and 26f with the water from the drawing circuit in the tank 10.
- a plate exchanger 14 according to Figures 2a and 2b, or according to the figure 2c, can be embedded in the balloon 10 as shown diagrammatically on Figure 3.
- the plate heat exchanger 14 is mounted in the tank 10 before closing of the latter, by welding or soldering on ends, internal to the balloon 10, of three rigid tubes 32, 33 and 34, thus rigidly connected to the exchanger 14 and passing through the walls of the balloon 10 with a seal produced also by soldering.
- the tube 32 tightly connects the inlet of primary 15 of exchanger 14, for example orifice 30 of end 28 of the plate 26a of the exchanger of Figures 2a and 2b, to a connecting pipe to the valve 21, while the tube 32 sealingly connects the outlet of the primary 15 of the exchanger 14, for example the orifice 30 of the end 29 of the plate 26a in Figures 2a and 2b, to a return line to the pump 5, and that the tube 34 tightly connects the inlet of the secondary 16 of the exchanger 14, for example the orifice 31 of the end 29 of the plate 26a on Figures 2a and 2b, to a pipe connected to the flow meter 23 and to the inlet of water 7.
- connection between the exchanger 14 and the tank 10 and the hydraulic connections between the outside of the tank 10 and the exchanger 14 inside the tank 10 are made rigidly by the rigid tubes 32, 33 and 34 as well as by the solder or welds at their ends and at their crossing of the wall of the storage tank 10.
- the disadvantage of this embodiment is that the storage tank with plates obtained is difficult to dismantle.
- a plate heat exchanger 14 such as that of FIGS. 2a and 2b or of FIG. 2c is advantageously mounted in the balloon 10 as shown in Figures 4 and 5.
- the plate heat exchanger 14 is pre-mounted on two flanges, one of which 35 ( Figure 4) encloses the end portion of the exchanger 14 constituted by the ends 29 of the adjoining plates 26a to 26f, and the other of which flange 36 (FIG. 5) encloses the opposite end part of the exchanger 14, constituted by the ends 28 of the adjoining plates 26a to 26f.
- the flange 35 has two integrated end pieces 37 and 38, with flat connection faces at their free end, on the opposite side to the exchanger 14, and which are each a nozzle tubular bent towards the inside of the flange 35 and towards the orifices 30 and 31 of the end 28 of the plate 26a of the exchanger 14, so that the end pieces tubes 37 and 38 are tightly connected respectively with the exit of primary 15 and entry of secondary 16 of exchanger 14, using seals 39 and 40 tablets between end caps 37 and 38 and the periphery plane of the corresponding holes 30 and 31.
- the flange 36 has a tubular end piece 41 also angled, tightly connected to the inlet of the primary 15 of the exchanger 14 by compression of a seal 42 between the tubular end piece 41 and the flat periphery of the orifice 30 of the end 28 of the plate 26a forming the primary entrance, while the flange 36 has, opposite the orifice 31 constituting the outlet of the secondary 16 at this same end of the exchanger 14, a short bent sleeve 43 opening towards the inside of the tank 10, when the exchanger 14 and its flanges 35 and 36 is arranged in the balloon 10 in the following manner.
- the sub-assembly consisting of the exchanger 14 and flanges 35 and 36 is introduced into the ball 10 in a direction of mounting going from right to left in Figures 4 and 5, through an orifice 44, formed in the wall of the tank 10 for the insertion of the exchanger 14.
- the flange 36 around the end of the exchanger 14 which is the first engaged in the balloon 10 is guided by its tubular end piece 41 to the inside of a tubular end piece 46 of a support piece 47 fixed with sealing, through a seal 48, against the wall of the balloon 10, around a second opening in the part of the wall of the balloon 10 which is opposite to opening 44, this second opening thus being closed off by the support piece 47 around the end piece 41 of the flange 36, the seal between the tubular end piece 46 and the tubular end piece 41 fitted therein being provided by compression a seal 49 between the two end pieces.
- the flange 35 at the other end of the exchanger 14 is also tightly fixed, by compression of a seal 50, on the wall of the tank 10, around the opening 44 for inserting the exchanger 14.
- the flanges 35 and 36 and / or the support piece 47 can serve as support for temperature probes (not shown) detecting the temperature domestic water at the entrance and exit of the secondary respectively 16 of exchanger 14.
- the flanges 35 and 36 as well as the support piece 47 can be molded of composite material, for example a matrix of synthetic resin and fibers glass or carbon reinforcement, which allows to directly obtain shapes bowl complexes, for receiving the corresponding ends of the exchanger 14, with bent tubular end pieces projecting towards inside the bowls, for tight connections to the two inlets and to an outlet from the exchanger 14.
- the molding of the flanges 35 and 36 and of the part support 47 allows, at low cost, arrangements for easy mounting of the temperature probe 24 of FIG. 1, avoiding adjustments specific on the wall of the balloon 10, such as a probe support brazed by example.
- the plate heat exchanger 14 'of FIGS. 6a and 6b which can be substituted for the plate exchanger 14 of Figures 1, 2a and 2b, and its variant according to the figure 2c, differs from the exchangers previously described and of the so-called ⁇ type at one pass ⁇ , in that it is an exchanger of the type known as ⁇ with two passes ⁇ , whose entries and exits of primary and secondary are arranged in the same end part of the exchanger 14 ′, but open into the side walls opposite of the exchanger.
- the plate exchanger 14 ' includes a set of seven plates 26'a to 26'g, which are of the same shape and of the same structure as the plates 26a to 26f of the exchangers of FIGS. 2a to 2c, and joined and soldered together in the same way, so that delimit between them six channels 27'a to 27'f, including four 27'a, 27'c, 27'd and 27'f belong to primary 15 ', and the other two 27'b and 27'e belong to secondary 16 'of the exchanger 14', so that each of the two channels 27'b and 27 'e of secondary 16' extends between two channels 27 'and 27 'c, or 27' and 27 'f of primary 15', and that both channels simultaneously lateral ends 27'a and 27'f of all the channels delimited between the plates are directly adjacent each to one respectively of the two extreme side plates 26'a and 26'g which constitute the two side walls opposite the exchanger 14 '.
- the upper 30 and lower 31 orifice passages the end portions 28 and 29 of the plates 26'a to 26'g are distributed and connected selectively between them and at channels 27'a to 27'f so that the entry of the 15 'primary and 16' secondary exit correspond respectively to upper 30 and lower 31 holes in the end 29 (on the right in the figures 6a and 6b) of the end side plate 26'g, while the primary outlet 15 'and the secondary entrance 16' correspond to the respectively upper orifices 30 and lower 31 in the end 29 of the other side plate end 26'a.
- the number of plates of the exchanger 14 can be greater than 7, respectively 6, if necessary, since the end channels are supplied by the heating water (primary circuit).
- Such an exchanger 14 ′ can be mounted in the tank, for example by overhang, being tightly fixed to the wall of the balloon 10 and connected tightly to the heating and drawing circuits by the part end of the exchanger 14 'which presents the inputs and outputs of the primary 15 'and secondary 16' of this exchanger 14 ', for example using a flange, pre-mounted on this end of the exchanger, and which is supported so sealed by the wall of the tank and itself connected with sealing, of a share, at the entrances and exits of primary 15 'and secondary 16', with the exception of the output of the secondary 16 'which opens at a low point in the balloon 10, and, on the other hand, to the heating and drawing circuits.
- the half flange 52 in the form of a bowl for substantially enveloping the half of the periphery of the corresponding end of the exchanger 14 ', comprises also two bent tubular ends 55 and 56, which ensure the connection waterproof by compression of a seal respectively 57 and 58 against the planar periphery of the corresponding orifices 30 and 31 respectively, in this end 29 of the plate 26'a, respectively at the outlet of the primary and at the entrance of the secondary 14 'exchanger.
- the other half flange 53 also bowl-shaped to wrap half of the periphery of this end of the exchanger 14 ′, has a tubular end piece angled 59 connected with sealing to the inlet of the primary 15 'of the exchanger 14 'by compression of a seal 60 on the flat periphery of the orifice 30 in the end 29 of the other external side plate 26'g of the exchanger 14 ', that same half-flange 53 further comprising a small sleeve angled 61 connecting the secondary outlet 16 ', at the level of the lower orifice 31 in this same end 29 of the plate 26'g, inside the balloon 10.
- the flange 51 is itself engaged and supported in a support piece 62, also in the general shape of a bowl, and which is fixed by its periphery to the wall of the balloon 10, around an opening 63 formed in this wall for the insertion of the exchanger 14 ', the connection between the support part 62 and the wall of the balloon 10 being sealed by compression of a seal 64 surrounding the opening 63.
- the support piece 62 also has three end caps tubular 65, 66 and 67, in which are fitted with sealing respectively the tubular ends 55 and 56 of the half-flange 52 and the end piece tubular 59 of the half-flange 53, the seal being ensured by compression of seals 68, 69 and 70, each compressed between two corresponding end caps fitted into each other.
- the support piece 62 ensures immobilization of the exchanger 14 'and of its flange 51 with respect to the balloon 10, by the fixing of the support piece 62 on the wall of the balloon 10, as well as the connections sealed to the heating and drawing circuits by the nozzles 65, 66 and 67, tightly connected to the pipeline respectively of the heating circuit leading to pump 5 ( Figure 1), to the pipe of the drawing circuit connected to the flow meter 23 and to the cold water inlet 7, and to the pipe of the heating circuit connected to valve 21.
- the half-flanges 52 and 53 as well as the support part 62 can also be molded each in a single piece of material composite, like the flanges 35 and 36 and the support piece 47 of. the example of Figures 4 and 5.
- the molding of the part support 62 allows low-cost arrangements for easy mounting of the temperature sensor 24 (see FIG. 1) without specific arrangement on the inner wall of the tank 10.
- a shim can be placed in the balloon 10 to support the end of the exchanger 14 ′ which is opposite to that enclosed in the flange 51.
- the support piece 62 ' which cooperates in the same way as the support piece 62 with the demibrids 52 and 53 and with the wall of the balloon 10 and therefore has substantially the same structure, suitable for this purpose, as the support piece 62, constitutes one bottoms of the balloon 10, for example its bottom bottom, closed sealed on the wall of the tank 10 thanks to the seal 64.
- This arrangement allows a optimal functioning of the device thanks to the exchanger 14 'in the lower part in the balloon 10.
- the support piece 62 ' is different from the support piece 62 in what it presents arrangements allowing, in the balloon 10, the connection easy from tube 11 to draw hot sanitary water at the top in the tank 10, and, outside the tank 10, the connection sealed to the hot water outlet pipe 8 (see figure 1).
- the support part 62 ' may include a fourth tubular end piece 71, in which the tube 11 is fitted with sealing, and connecting itself with sealing to the pipe from the hot water outlet 8 at its end external to the tank 10.
- This example presents the advantages of a simplicity of realization of the tank 10 and a simplification of the assembly operations of the exchanger 14 ' in balloon 10 and checking this assembly.
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Abstract
Description
- un circuit d'eau fermé dit 〈〈 de réchauffage sanitaire 〉〉, comportant une pompe de circulation, une tubulure associée à un brûleur à gaz dans une chambre de combustion et formant avec ce brûleur un échangeur thermique principal, et le primaire d'un échangeur thermique auxiliaire,
- un circuit d'eau de puisage comprenant une arrivée d'eau froide, le secondaire de l'échangeur thermique auxiliaire et une sortie de puisage, l'échangeur thermique auxiliaire comprenant un ballon de capacité réduite et un échangeur direct à contre-courant monté en amont par rapport au ballon sur le circuit de puisage, et
- un circuit de chauffage central, monté en parallèle sur le tronçon du circuit de réchauffage sanitaire qui comprend la pompe et la tubulure, la connexion d'une extrémité dudit circuit de chauffage central avec ledit tronçon étant effectuée par une vanne à trois voies.
- la figure 1 représente schématiquement un appareil mixte de chauffage d'eau conforme à l'invention, ainsi que l'installation associée à cet appareil,
- les figures 2a et 2b sont des vues schématiques éclatées d'un premier exemple d'échangeur à plaques utilisable dans l'appareil de la figure 1, et représenté respectivement en mode de chauffage direct de l'eau sanitaire en cours de puisage et en mode de maintien en température et de réchauffage de l'eau sanitaire dans le ballon,
- la figure 2c est analogue à la figure 2a pour une variante de l'échangeur des figures 2a et 2b,
- la figure 3 représente schématiquement un premier ensemble ballonéchangeur à plaques comportant un échangeur selon les figures 2a à 2c, ou selon la figure 2c,
- les figures 4 et 5 représentent schématiquement un second exemple d'ensemble ballon-échangeur à plaques comportant un échangeur selon les figures 2a et 2b, respectivement au niveau de ses extrémités de droite et de gauche sur ces figures,
- les figures 6a et 6b sont des vues analogues aux figures 2a et 2b pour un exemple d'échangeur à plaques du type 〈〈 à deux passes 〉〉, dont les entrées et sorties du primaire et du secondaire sont ménagées dans une même extrémité de l'échangeur,
- les figures 7 et 8 sont des vues schématiques en partie en coupe et en partie en élévation latérale, respectivement d'un côté et de l'autre de l'extrémité de l'échangeur des figures 6a et 6b dans laquelle sont ménagées les entrées et sorties du primaire et du secondaire, à droite sur les figures 6a et 6b, et
- la figure 9 est une vue schématique d'un montage vertical de l'échangeur direct selon les figures 6a et 6b, et selon une variante du montage des figures 7 et 8.
- un générateur de calories comportant, dans une chambre de combustion 2, un brûleur à gaz 3 et une tubulure 4 exposée aux flammes et/ou aux gaz chauds produits par le brûleur 3, la tubulure 4 étant destinée à être parcourue par de l'eau à chauffer et constituant avec le brûleur 3 un échangeur thermique principal,
- une pompe de circulation 5 raccordée à la tubulure 4,
- un tronçon de conduite 6 formant, avec la tubulure 4 et la pompe 5, un circuit fermé dit de réchauffage sanitaire, ce tronçon 6 constituant le primaire d'un échangeur thermique auxiliaire E, et
- un circuit de puisage comprenant, entre son arrivée d'eau froide 7 et une sortie d'eau chaude 8, un tronçon 9 appartenant au secondaire de l'échangeur thermique auxiliaire E.
- d'une part, un ballon 10 destiné à contenir une réserve d'eau chaude sanitaire, de volume relativement réduit, immédiatement disponible pour le puisage, le volume intérieur du ballon 10, qui fait partie du tronçon 9 ou secondaire de l'échangeur E, étant raccordé en un point haut 13 dans le ballon 10 à la sortie d'eau chaude 8 par un tube rigide 11 pénétrant dans le ballon 10, et
- d'autre part, un échangeur thermique 14, qui est un échangeur direct à contre-courant et à plaques, pour présenter une forte capacité volumique d'échange thermique, comportant un primaire 15 et un secondaire 16, schématisés par deux portions de canalisation faisant partie respectivement des deux tronçons 6 et 9 ou primaire et secondaire de l'échangeur thermique auxiliaire E, et mises en contact thermique mutuel à contre-courant, cet échangeur à plaques 14 étant noyé dans le ballon 10.
- d'une source d'eau froide sous pression 17, raccordée à l'arrivée d'eau froide 7,
- d'un robinet de puisage 18, raccordé à la sortie d'eau chaude 8, et
- d'un tronçon de circuit de chauffage central 19, comprenant des radiateurs 20 et monté en parallèle sur l'ensemble constitué par la tubulure 4 et la pompe 5, l'une des connexions du tronçon 19 avec cet ensemble 4, 5 étant réalisée au moyen de la vanne 21 à trois voies et deux positions, permettant de relier sélectivement l'ensemble 4, 5 soit au tronçon 6 de réchauffage sanitaire, soit au tronçon 19 de chauffage central.
Claims (11)
- Appareil générateur d'eau chaude sanitaire et d'eau de chauffage central, mettant en oeuvre la combustion d'un gaz et comprenant un circuit d'eau fermé dit de 〈〈 réchauffage sanitaire 〉〉 comportant une pompe de circulation (5), une tubulure (4) associée à un brûleur à gaz (3) dans une chambre de combustion (2) et formant avec ce brûleur (3) un échangeur thermique principal, et le primaire (6) d'un échangeur thermique auxiliaire (E); un circuit d'eau de puisage comprenant une arrivée d'eau froide (7), le secondaire (9) de l'échangeur thermique auxiliaire (E) et une sortie de puisage (8), l'échangeur thermique auxiliaire (E) comprenant un ballon (10) de capacité réduite et un échangeur direct à contre-courant (14,14'), qui est un échangeur à plaques essentiellement disposé à l'intérieur du ballon (10), et de sorte que l'échangeur direct (14,14') est monté en amont par rapport au ballon (10) sur le circuit de puisage (9), et un circuit de chauffage central (19), monté en parallèle sur le tronçon du circuit de réchauffage sanitaire qui comprend la pompe (5) et la tubulure (4), la connexion d'une extrémité dudit circuit de chauffage central (19) avec ledit tronçon (4,5) étant effectuée par une vanne à trois voies (21), caractérisé en ce que le primaire (15,15') de l'échangeur direct (14,14') est alimenté en eau chaude depuis ladite tubulure (4) et comprend au moins deux canaux latéraux extrêmes (27a,27e;27'a,27'f), adjacents à deux parois latérales (26a,26f;26'a,26'g) externes et opposées de l'échangeur direct (14,14'), aux extrémités latérales de l'ensemble des canaux (27a-27c;27'a-27'f) délimités entre les plaques (26a-26f;26'a-26'g) sensiblement paralléles de l'échangeur direct (14,14'), de sorte que l'eau dans le primaire (15,15') de réchangeur direct (14,14') est en relation d' échange thermique avec l'eau du circuit de puisage, d'une part, dans le ballon (10) et autour de l'échangeur direct (14,14'), par convexion au travers desdites parois externes (26a,26f;26'a,26'g) de l'échangeur direct (14,14') qui sont en contact direct avec l'eau du circuit de puisage dans le ballon (10), et d'autre part, dans au moins un canal (27b,27d;27'b,27'e) du secondaire (16,16') de l'échangeur direct (14), s'étendant entre lesdits canaux latéraux (27a,27c; 27'a,27'f), la sortie (12) du secondaire (16,16') de l'échangeur direct (14,14') débouchant directement dans le ballon (10).
- Appareil selon la revendication 1, caractérisé en ce que l'échangeur direct (14) est supporté dans le ballon (10) au moins par trois tubes (32,33,34) rigides traversant avec étanchéité la paroi du ballon (10), et dont un premier tube (32) raccorde le circuit de réchauffage sanitaire à l'entrée du primaire (15) de l'échangeur direct (14), dans une partie d'extrémité dudit échangeur direct (14) dans laquelle s'ouvre également la sortie (12) du secondaire (16) dudit échangeur direct (14), les deuxième et troisième tubes (33,34) raccordant respectivement la sortie du primaire (15) et l'entrée du secondaire (16) de l'échangeur direct (14), dans la partie d'extrémité opposée dudit échangeur direct (14), au circuit de réchauffage sanitaire et au circuit d'eau de puisage respectivement.
- Appareil selon la revendication 1, caractérisé en ce que l'échangeur direct (14) est supporté dans le ballon (10) par au moins deux brides (35,36) reliées chacune avec étanchéité (50,48) à l'une respectivement de deux parties opposées de la paroi du ballon (10) qui sont percées chacune d'une ouverture (44), chacune des deux brides (35,36) supportant l'une respectivement des deux parties (29,28) d'extrémités opposées dudit échangeur direct (14), une première bride (36) participant de plus au raccordement étanche entre le circuit de réchauffage sanitaire et l'entrée du primaire (15) de l'échangeur direct (14) et mettant en communication la sortie du secondaire (16) dudit échangeur direct (14) avec l'intérieur du ballon (10), et la seconde bride (35) assurant un raccordement étanche entre, d'une part, la sortie du primaire (15) dudit échangeur direct (14) et le circuit de réchauffage sanitaire, et, d'autre part, l'entrée du secondaire (16) dudit échangeur direct (14) et le circuit d'eau de puisage.
- Appareil selon la revendication 3, caractérisé en ce que la première bride (36) enveloppe sensiblement la partie d'extrémité correspondante (28) de l'échangeur direct (14) à l'intérieur du ballon (10), et comprend un embout (41) de liaison étanche (42) à l'entrée du primaire (15) dudit échangeur direct (14), ledit embout de liaison (41) étant engagé avec étanchéité (49) dans une pièce support (47), supportant la première bride (36) et rapportée avec étanchéité (48) autour d'une ouverture dans la paroi du ballon (10), et présentant un embout (46) de raccordement étanche au circuit de réchauffage sanitaire.
- Appareil selon l'une des revendications 3 et 4, caractérisé en ce que la seconde bride (35) enveloppe sensiblement la partie d'extrémité correspondante (29) de l'échangeur direct (14) et est directement rapportée avec étanchéité (50) autour d'une ouverture (44) dans la paroi du ballon (10) pour l'insertion de l'échangeur direct (14) dans le ballon (10), et ladite seconde bride (35) comporte deux embouts (37,38) de liaison étanche, dont l'un (37) assure le raccordement entre la sortie du primaire (15) dudit échangeur direct (14) et le circuit de réchauffage sanitaire, et l'autre (38) assure le raccordement entre le circuit d'eau de puisage et l'entrée du secondaire (16) dudit échangeur direct (14).
- Appareil selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les entrées et sorties du primaire (15) et du secondaire (16) de l'échangeur direct (14) débouchent dans une même paroi latérale externe (26a) dudit échangeur direct (14), l'entrée du primaire (15) et la sortie du secondaire (16) étant ménagées dans une partie d'extrémité (28) dudit échangeur direct (14), tandis que l'entrée du secondaire (16) et la sortie du primaire (15) sont ménagées dans la partie d'extrémité opposée (29) dudit échangeur direct (14).
- Appareil selon la revendication 1, caractérisé en ce que l'échangeur direct (14') est supporté dans le ballon (10) par au moins une bride (51) enveloppant sensiblement une partie d'extrémité (29) de l'échangeur direct (14'), et reliée avec étanchéité (64) à une partie de la paroi du ballon (10) qui présente une ouverture (63) d'insertion de l'échangeur direct (14') dans le ballon (10), ladite bride (51) comportant trois embouts (55,56,59) de liaison étanche participant aux raccordements entre les entrée et sortie du primaire (15') et l'entrée du secondaire (16') de l'échangeur direct (14') aux circuits respectivement de réchauffage sanitaire et d'eau de puisage ainsi qu'un passage (61) de communication entre la sortie du secondaire (16') de l'échangeur direct (14') et l'intérieur du ballon (10).
- Appareil selon la revendication 7, caractérisé en ce que ladite bride (51) comprend au moins deux parties de bride (52,53) fixées l'une à l'autre an enserrant entre elles ladite partie d'extrémité (29) de l'échangeur direct (14'), une première partie de bride (52) comportant deux embouts (55,56) de liaison étanche (57,58) respectivement à la sortie du primaire (15') et à l'entrée du secondaire (16') de l'échangeur direct (14'), et la seconde partie de bride (53) comportant un embout (59) de liaison étanche à l'entrée du primaire (15') de l'échangeur direct (14'), et un embout (61) de communication de la sortie du secondaire (16') de l'échangeur direct (14') avec l'intérieur du ballon (10), les deux embouts (55,56) de la première partie de bride (52) et l'embout (59) de la seconde partie de bride (53) étant engagés avec étanchéité chacun dans l'un respectivement de trois embouts (65,66,67) d'une pièce support (62,62'), supportant lesdites parties de bride (52,53) et rapportée avec étanchéité (64) sur la paroi du ballon (10) autour de l'ouverture (63) d'insertion de l'échangeur direct (14') dans le ballon (10), les embouts (65,66,67) de la pièce support (62,62') assurant le raccordement étanche avec le circuit de réchauffage sanitaire pour les deux embouts (65,67) qui reçoivent les embouts (55,59) de liaison étanche des parties de bride (52,53) aux entrée et sortie du primaire (15') de l'échangeur direct (14'), et avec le circuit d'eau de puisage pour l'embout (66) recevant l'embout (56) de liaison étanche de la seconde partie de bride (52) à l'entrée du secondaire (16') de l'échangeur direct (14').
- Appareil selon la revendication 8, caractérisé an ce que l'échangeur direct (14') et le ballon (10) sont disposés sensiblement verticalement, le premier de préférence en partie basse dans le second, et de sorte que la pièce support (62') constitue un fond du ballon (10) et comporte des moyens, tel qu'un quatrième embout tubulaire (71), pour le raccordement étanche avec un tube (11) de prélèvement d'eau chaude sanitaire en partie haute dans le ballon (10), et avec ladite sortie de puisage (8).
- Appareil selon l'une quelconque des revendications 7 à 9, caractérisé en ce que les entrées et sorties du primaire (15') et du secondaire (16') de l'échangeur direct (14') sont ménagées dans une même partie d'extrémité (29) dudit échangeur direct (14'), l'entrée du primaire (15') et la sortie du secondaire (16') débouchant dans une paroi latérale externe (26'g) dudit échangeur direct (14'), tandis que la sortie du primaire (15') et l'entrée du secondaire (16') débouchent dans la paroi latérale externe opposée (26'a) dudit échangeur direct (14').
- Appareil selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'échangeur direct (14,14') à plaques comprend un ensemble de plaques (26a-26f; 26'a-26'g) munies de reliefs sur leurs deux faces latérales et qui sont accolées et brasées les unes aux autres au moins le long de leur périphérie, et de sorte à délimiter entre les plaques des canaux (27a-27e ;27'a-27'f) du primaire (15,15') et du secondaire (16,16') de l'échangeur direct (14,14'), chaque canal (27b,27d;27'b,27'e) du secondaire (16,16') s'étendant entre deux canaux (27a,27c,27e; 27'a,27'c,27'd,27'f) du primaire (15,15'), et les deux plaques (26a,26f;26'a,26'g) aux extrémités de l'ensemble de plaques constituant les parois latérales externes de l'échangeur direct (14,14').
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901168A FR2789158B1 (fr) | 1999-02-02 | 1999-02-02 | Perfectionnement aux appareils generateurs d'eau chaude sanitaire et d'eau de chauffage central |
FR9901168 | 1999-02-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1026448A1 true EP1026448A1 (fr) | 2000-08-09 |
EP1026448B1 EP1026448B1 (fr) | 2003-12-17 |
Family
ID=9541491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400186A Expired - Lifetime EP1026448B1 (fr) | 1999-02-02 | 2000-01-25 | Perfectionnement aux appareils générateurs d'eau chaude sanitaire et d'eau de chauffage central |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1026448B1 (fr) |
AT (1) | ATE256846T1 (fr) |
DE (1) | DE60007193D1 (fr) |
ES (1) | ES2211463T3 (fr) |
FR (1) | FR2789158B1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065186A1 (fr) * | 2000-03-03 | 2001-09-07 | Merloni Termosanitari S.P.A. | Nouveau concept, chauffe-eau rapide a capacite de stockage |
WO2008132053A2 (fr) * | 2007-04-26 | 2008-11-06 | M.T.A. S.P.A. | Système de chauffage intégré |
WO2016012029A1 (fr) * | 2014-07-24 | 2016-01-28 | Elias Nomikos | Chauffe-eau et applications correspondantes |
WO2021051185A1 (fr) * | 2019-09-20 | 2021-03-25 | Camus Hydronics Ltd. | Système et procédé de régulation de température de sortie de chauffe-eau |
EP3333499B1 (fr) * | 2016-11-30 | 2023-03-29 | Tol Group S.R.L. | Chaudières chauffantes à plaques en forme de zick-zack pour la production et l'accumulation d'eaux chaude |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE689494A (fr) * | 1965-11-11 | 1967-04-14 | ||
DE2627491A1 (de) * | 1975-06-19 | 1976-12-30 | Austria Email Ag | Heizeinsatz fuer brauchwasserboiler |
FR2731784A1 (fr) * | 1995-03-17 | 1996-09-20 | Packinox Sa | Echangeur thermique a plaques |
EP0778450A1 (fr) * | 1995-12-08 | 1997-06-11 | Chaffoteaux Et Maury | Perfectionnements aux appareils générateurs d'eau chaude sanitaire |
EP0870993A1 (fr) * | 1997-04-10 | 1998-10-14 | Metaal Vries B.V. | Accumulateur d'eau chaude |
-
1999
- 1999-02-02 FR FR9901168A patent/FR2789158B1/fr not_active Expired - Fee Related
-
2000
- 2000-01-25 AT AT00400186T patent/ATE256846T1/de not_active IP Right Cessation
- 2000-01-25 EP EP00400186A patent/EP1026448B1/fr not_active Expired - Lifetime
- 2000-01-25 ES ES00400186T patent/ES2211463T3/es not_active Expired - Lifetime
- 2000-01-25 DE DE60007193T patent/DE60007193D1/de not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE689494A (fr) * | 1965-11-11 | 1967-04-14 | ||
DE2627491A1 (de) * | 1975-06-19 | 1976-12-30 | Austria Email Ag | Heizeinsatz fuer brauchwasserboiler |
FR2731784A1 (fr) * | 1995-03-17 | 1996-09-20 | Packinox Sa | Echangeur thermique a plaques |
EP0778450A1 (fr) * | 1995-12-08 | 1997-06-11 | Chaffoteaux Et Maury | Perfectionnements aux appareils générateurs d'eau chaude sanitaire |
EP0870993A1 (fr) * | 1997-04-10 | 1998-10-14 | Metaal Vries B.V. | Accumulateur d'eau chaude |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001065186A1 (fr) * | 2000-03-03 | 2001-09-07 | Merloni Termosanitari S.P.A. | Nouveau concept, chauffe-eau rapide a capacite de stockage |
WO2008132053A2 (fr) * | 2007-04-26 | 2008-11-06 | M.T.A. S.P.A. | Système de chauffage intégré |
WO2008132053A3 (fr) * | 2007-04-26 | 2009-03-19 | Mta Spa | Système de chauffage intégré |
WO2016012029A1 (fr) * | 2014-07-24 | 2016-01-28 | Elias Nomikos | Chauffe-eau et applications correspondantes |
EP3333499B1 (fr) * | 2016-11-30 | 2023-03-29 | Tol Group S.R.L. | Chaudières chauffantes à plaques en forme de zick-zack pour la production et l'accumulation d'eaux chaude |
WO2021051185A1 (fr) * | 2019-09-20 | 2021-03-25 | Camus Hydronics Ltd. | Système et procédé de régulation de température de sortie de chauffe-eau |
US11313588B2 (en) | 2019-09-20 | 2022-04-26 | Camus Hydronics Ltd. | System and method for controlling water heater output temperature |
Also Published As
Publication number | Publication date |
---|---|
ATE256846T1 (de) | 2004-01-15 |
DE60007193D1 (de) | 2004-01-29 |
ES2211463T3 (es) | 2004-07-16 |
FR2789158B1 (fr) | 2001-05-25 |
EP1026448B1 (fr) | 2003-12-17 |
FR2789158A1 (fr) | 2000-08-04 |
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