EP3637012B1 - Combined wall device for heating of domestic water and water for heating a room - Google Patents

Description

The invention relates to a combined device for heating sanitary water and heating water for a room. In particular, the invention relates to a combined wall-mounted device for heating sanitary water and heating water for a room. The invention also relates to a system for heating sanitary water and heating water for a room comprising such a combined device.

It is known to combine in a single device the heating of sanitary water and of the heating water of a room by means of a heat pump. This type of device is called a "dual service heat pump" because the heating of the domestic water as well as the heating water is carried out via a single heat pump comprising a module intended to be placed outside the room. . An example of installation of such a combined device 10 is for example visible on the figures 1 and 2 .

The combined device 10 comprises a heating water circuit 18 connected to heating elements 20 of a room L, such as radiators. The combined device 10 also comprises a first heat exchanger 22 capable of exchanging heat between a heat transfer fluid circuit 24 and the heating water circuit 18. In particular, the heat transfer fluid circuit 24 exchanges heat between a external environment E to the room L and the heating water circuit 18 present inside the room L. To do this, an outdoor unit 25 is placed at the level of the external environment E and configured to exchange heat with the circuit heat transfer fluid 24. The outdoor unit 25, the heat transfer fluid circuit 24 and the first heat exchanger 22 form a heat pump capable of regulating the temperature of the heating water present in the heating water circuit 18 .

To allow the supply of domestic hot water in the room L, the combined device 10 also comprises a domestic water storage tank 14 and a domestic water circuit 12 in fluid communication with the storage tank 14. The circuit sanitary water 12 is connected to sanitary water distribution devices 16, such as taps. The storage tank 14 used in the combined device 10 forms an interior volume of 190 L, ie 190 dm ³ .

The combined device 10 further comprises a domestic water heating circuit 26 connected to the heating water circuit 18 in the form of a bypass. Thus, it is the heating water from the heating water circuit 18 which circulates in the domestic water heating circuit 26. This domestic water heating circuit 26 comprises a second heat exchanger 28 arranged inside the storage tank 14 to exchange heat with the sanitary water present in the storage tank 14. This second heat exchanger 28 is a coil exchanger extending inside the storage tank 14 in the form of a helix.

The configuration of this type of combined device 10 makes it possible to regulate the temperature of the heating water directly via the first exchanger 22. A three-way valve 30 arranged at a junction between the domestic water heating circuit 26 and the heating water circuit 18 makes it possible to selectively divert the heating water inside the domestic hot water heating circuit 26 to heat the domestic water present in the storage tank 14. Thus, the configuration of this type of combined device 10 makes it possible to regulate the temperature of the sanitary water indirectly via the heating water.

This indirect domestic water heating configuration involves selective or alternating operation between domestic water heating and domestic water heating. Indeed, under the action of the three-way valve 30 and a circulator 32, the heating water circulates either inside the heating water circuit 18 between the first heat exchanger 22 and the heater 20 is inside the sanitary water heating circuit 26 between the first 22 and the second 28 heat exchangers.

As depicted at picture 2 , the combined device 10 is arranged inside a casing 34 comprising in particular within it the first 22 and second 28 heat exchangers, the heating water circuit 18, the sanitary water circuit 12 and the tank storage 14. The housing 34 forms a parallelepiped having a height of about 1.84 m.

The connection of the heating water 18 and sanitary water 12 circuits to the heating devices 20 and to the sanitary water distribution devices 16 is made at the rear of the casing 34, i.e. a rear face 36 of the casing 34 intended to be positioned opposite a wall in room L.

In use, it has been observed that the combined device 10 causes difficulties in positioning and connecting. Indeed, the dimensions as well as the mass of the combined device 10 make it very difficult to handle by an installer. Indeed, the mass of the combined device 10 exceeds 55 kg when it is empty of water, which makes its handling by a single installer prohibited by the regulations in force. In particular, the combined device 10 weighs approximately 140 kg when it is empty of water and approximately 350 kg when it is filled with water. In addition, the combined device 10 measures approximately 1.80 m in height, which limits its positioning.

Indeed, the first 22 and second 28 heat exchangers are housed inside the casing 34 which makes the dimensions of its outer casing large. In addition, the presence of the second heat exchanger 28 inside the storage tank 14 reduces the interior volume available. This imposes an oversizing of the storage tank 14 for a desired maximum volume of sanitary water inside the storage tank 14. Thus, the storage tank 14 is therefore sized with a larger interior volume compared to a storage tank. storage 14 without heat exchanger within it having the same interior volume available for storage of sanitary water. The number and volume of these components also lead to an increase in the mass of the combined device 10.

The large size of the combined device 10 as well as its large mass require installation of the combined device 10 on the ground. Indeed, it has been observed that for reasons of effort recovery and simplicity of installation, it is not possible to suspend the combined device 10 above the ground. Indeed, the combined device 10 weighs approximately 140 kg when it is empty of water and approximately 350 kg when it is filled with water. In addition, the combined device 10 measures approximately 1.80 m in height, which limits its positioning. The combined device 10 is said to be "on a base" when it is configured to be placed on the ground, ie not suspended from a support above the ground.

In addition, it has been observed that the connection of the combined device 10 to the heaters 20 and sanitary water distribution 16 was not easy because the position of each of the connectors is specific to the model of combined device 10. Thus, the installation of heating water and sanitary water in room L depends on the model of combined device which will be installed in room L. of heating water and sanitary water of the local L cannot be easily carried out upstream of the establishment of the combined device 10. This greatly constrains the progress of the construction site which therefore depends on the choice of the combined device. Moreover, this specificity of the position of the connections of the combined device 10 complicates the work of the installer, which lengthens the installation time.

The document EP1 906 107 A1 discloses a combined device having the features of the preamble of claim 1.

There is therefore a need for a combined device for heating the sanitary water and the heating water of a room allowing easier installation and connection.

• un ballon de stockage d'eau sanitaire,
• un circuit d'eau sanitaire en communication de fluide avec le ballon de stockage,
• un circuit d'eau de chauffage,
• un ou plusieurs échangeur de chaleur d'une pompe à chaleur pour transférer de la chaleur à de l'eau de chauffage présente dans le circuit d'eau de chauffage et à de l'eau sanitaire présente dans le circuit d'eau sanitaire,
• des moyens de fixation du dispositif combiné à un support, les moyens de fixation étant configurés pour suspendre le dispositif combiné en totalité au-dessus du sol,
• une platine de raccordement du circuit d'eau de chauffage à au moins une installation d'eau de chauffage du local et du circuit d'eau sanitaire à une installation d'eau sanitaire du local.

For this, the invention relates to a combined device for heating domestic water and heating water for a room according to claim 1. Said device comprises:

• a sanitary water storage tank,
• a sanitary water circuit in fluid communication with the storage tank,
• a heating water circuit,
• one or more heat exchangers of a heat pump for transferring heat to heating water present in the heating water circuit and to sanitary water present in the sanitary water circuit,
• means for fixing the combined device to a support, the fixing means being configured to suspend the combined device entirely above the ground,
• a plate for connection of the heating water circuit to at least one heating water installation of the room and of the sanitary water circuit to a sanitary water installation of the room.

The fact of providing a combined device configured to be suspended entirely above the ground makes it possible to reduce the surface taken up by the ground, which corresponds to a current expectation of users, in particular in the construction of new housing and offices.

In addition, the fact of grouping the connections of the combined device to the heating water and sanitary water installations of the room L on the same plate makes it easier to read the connection of the combined device. The installer does not have to look all around the combined device where the various connections are. In addition, positioning the fittings on a plate makes it possible to position each of the fittings at a standard position known to installers. Thus, the installer can save a lot of time on the installation time. A predetermined position, both in height and vis-à-vis the other fittings, makes it possible to carry out the installation of all the pipes for the sanitary water and heating water installations in the room even before knowing the model. combination device used or its installation. This is particularly advantageous in the context of the construction of new housing or offices.

• un premier module comportant le ballon de stockage d'eau sanitaire,
• un deuxième module comportant l'échangeur de chaleur, les circuits d'eau de chauffage et d'eau sanitaire et la platine de raccordement, les moyens de fixation étant configurés pour fixer au support les premier et deuxième modules indépendamment l'un de l'autre.

According to one embodiment of the combined device, the combined device is structured in a modular manner and comprises:

• a first module comprising the sanitary water storage tank,
• a second module comprising the heat exchanger, the heating water and sanitary water circuits and the connection plate, the fixing means being configured to fix the first and second modules to the support independently of one of the other.

According to an embodiment of the combined device, the first and second modules are configured to be connected to each other by arranging the first module above the second module.

According to one embodiment of the combined device, each of the first and second modules is configured to have a mass less than or equal to 55 kg when they are empty of water, preferably less than or equal to 50 kg, even more preferably less than or equal at 45kg.

According to one embodiment of the combined device, the storage tank has an interior volume less than or equal to 150 dm3, preferably less than or equal to 100 dm3.

According to one embodiment of the combined device, the maximum height of the combined device is less than or equal to 150 cm, preferably less than or equal to 145 cm.

According to one embodiment of the combined device, the sanitary water and heating water circuits are configured to arrange the connection plate and/or the heat exchanger(s) under the storage tank.

• au moins un raccord de départ et au moins un raccord de retour d'eau de chauffage montés sur la platine de raccordement pour relier le circuit d'eau de chauffage à ladite au moins une installation d'eau de chauffage du local,
• au moins un raccord de départ et au moins un raccord de retour d'eau sanitaire montés sur la platine de raccordement pour relier le circuit d'eau sanitaire à ladite installation d'eau sanitaire du local.

According to one embodiment of the combined device, the latter further comprises:

• at least one flow connector and at least one heating water return connector mounted on the connection plate to connect the heating water circuit to said at least one heating water installation of the room,
• at least one outlet connector and at least one domestic water return connector mounted on the connection plate to connect the domestic water circuit to said local domestic water installation.

• entre le fluide caloporteur et de l'eau sanitaire présente dans un circuit de chauffage d'eau sanitaire, et
• entre le fluide caloporteur et de l'eau de chauffage présente dans le circuit d'eau de chauffage,

le circuit d'eau sanitaire comprenant :

• le circuit de chauffage d'eau sanitaire comprenant une première conduite de départ d'eau sanitaire reliant le ballon de stockage à une entrée d'eau sanitaire de l'échangeur de chaleur et une première conduite de retour d'eau sanitaire reliant une sortie d'eau sanitaire de l'échangeur de chaleur au ballon de stockage,
• un circuit de distribution d'eau sanitaire comprenant une deuxième conduite de départ d'eau sanitaire reliant le ballon de stockage audit au moins un raccord de départ d'eau sanitaire et une deuxième conduite de retour d'eau sanitaire reliant ledit au moins un raccord de retour d'eau sanitaire.

According to one embodiment of the combined device, the latter comprises a single heat exchanger configured to perform a heat exchange:

• between the heat transfer fluid and the domestic water present in a domestic water heating circuit, and
• between the heat transfer fluid and the heating water present in the heating water circuit,

the sanitary water circuit comprising:

• the sanitary water heating circuit comprising a first sanitary water outlet pipe connecting the storage tank to a sanitary water inlet of the heat exchanger and a first sanitary water return pipe connecting an outlet of sanitary water from the heat exchanger to the storage tank,
• a domestic water distribution circuit comprising a second domestic water outlet pipe connecting the storage tank to said at least one domestic water outlet connection and a second sanitary water return connecting said at least one sanitary water return connector.

According to one embodiment of the combined device, the second return line is connected to the first outgoing line by means of a T-fitting.

• -une première connexion d'interface disposée au niveau de la première conduite de départ, en amont du raccord en Té,
• une deuxième connexion d'interface disposée au niveau de la deuxième conduite de départ,
• une troisième connexion d'interface disposée au niveau de la première conduite de retour.

According to one embodiment of the combined device, the first and second modules are in fluid communication with each other at three interface connections:

• -a first interface connection arranged at the level of the first outgoing pipe, upstream of the T-fitting,
• a second interface connection arranged at the level of the second outgoing line,
• a third interface connection disposed at the first return line.

According to one embodiment of the combined device, the domestic water circuit comprises a domestic water heating circuit, the domestic water heating and heating water circuits are separate.

According to one embodiment of the combined device, the heat exchanger forms an annular structure in the middle of which is formed a space, at least a portion of the sanitary water and heating water circuits extending inside of this space.

According to one embodiment of the combined device, the heat exchanger comprises three pipes nested one inside the other to define three fluid flow zones.

According to one embodiment of the combined device, the latter also comprising a safety connection configured to connect the sanitary water circuit to a safety group making it possible to regulate the pressure inside the storage tank, the safety group being arranged under the storage tank.

• un dispositif combiné tel que décrit ci-avant,
• au moins une installation d'eau sanitaire reliée au circuit d'eau sanitaire du dispositif combiné et comportant au moins un point de puisage,
• au moins une installation d'eau de chauffage reliée au circuit d'eau de chauffage du dispositif combiné et comportant au moins un système d'émission de chaleur pour chauffer le local.

The invention also relates to a system for heating sanitary water and heating water for a room, comprising:

• a combined device as described above,
• at least one sanitary water installation connected to the sanitary water circuit of the combined device and comprising at least one draw-off point,
• at least one heating water installation connected to the heating water circuit of the combined device and comprising at least one heat emission system for heating the room.

• fixer le premier module sur un support de manière à suspendre au-dessus du sol le premier module,
• positionner les premier et deuxième modules l'un par rapport à l'autre,
• fixer le deuxième module sur le support de manière à suspendre au-dessus du sol le deuxième module,

dans lequel les étapes de fixation étant interchangeables.The invention further relates to a method for mounting a combined device as described above, comprising the following steps:

• fix the first module on a support so as to suspend the first module above the ground,
• positioning the first and second modules relative to each other,
• fix the second module on the support so as to suspend the second module above the ground,

wherein the fixing steps being interchangeable.

• Les figures 1 et 2 représentent un schéma hydraulique et une vue en perspective d'un dispositif combiné de chauffage de l'eau sanitaire et de l'eau de chauffage d'un local connu de l'art antérieur.
• La figure 3 représente un schéma hydraulique d'un premier mode de réalisation d'un dispositif combiné de chauffage de l'eau sanitaire et de l'eau de chauffage d'un local selon l'invention.
• La figure 4 représente un schéma hydraulique d'un deuxième mode de réalisation d'un dispositif combiné de chauffage de l'eau sanitaire et de l'eau de chauffage d'un local selon l'invention.
• La figure 5 représente une vue en coupe transversale partielle d'un échangeur de chaleur du deuxième mode de réalisation du dispositif combiné selon la figure 4.
• Les figures 6 et 7 représentent respectivement une vue en perspective et une vue en coupe partielle de l'échangeur de chaleur du deuxième mode de réalisation du dispositif combiné selon la figure 4.
• Les figures 8 et 9 représentent respectivement une première et une deuxième configurations de mise en place de l'échangeur de chaleur du deuxième mode de réalisation du dispositif combiné selon la figure 4, l'échangeur de chaleur étant disposé sous le ballon de stockage dans la première configuration et autour du ballon de stockage dans la deuxième configuration.
• La figure 10 représente schématiquement une vue éclatée du deuxième mode de réalisation du dispositif combiné selon la figure 4 dans une configuration modulaire.
• Les figures 11 et 12 représentent schématiquement une vue détaillée de la partie inférieure du dispositif combiné avec et sans platine de raccordement, respectivement.
• La figure 13 représente schématiquement une vue en perspective de la platine de raccordement selon la figure 10.
• La figure 14 représente schématiquement une vue détaillée de la partie inférieure du deuxième mode de réalisation du dispositif combiné selon la figure 4 comprenant un kit de chauffage multizone.

Other characteristics and advantages of the invention will appear on reading the following description of preferred embodiments of the invention, given by way of example and with reference to the appended drawing.

• The figures 1 and 2 represent a hydraulic diagram and a perspective view of a combined device for heating sanitary water and heating water for a room known from the prior art.
• The picture 3 shows a hydraulic diagram of a first embodiment of a combined device for heating sanitary water and heating water for a room according to the invention.
• The figure 4 shows a hydraulic diagram of a second embodiment of a combined device for heating sanitary water and heating water for a room according to the invention.
• The figure 5 shows a partial cross-sectional view of a heat exchanger of the second embodiment of the combined device according to the figure 4 .
• The figures 6 and 7 represent respectively a perspective view and a partial sectional view of the heat exchanger of the second embodiment of the combined device according to the figure 4 .
• The figure 8 and 9 represent respectively a first and a second configuration for placing the heat exchanger of the second embodiment of the combined device according to the figure 4 , the heat exchanger being arranged under the storage tank in the first configuration and around the storage tank in the second configuration.
• The figure 10 schematically represents an exploded view of the second embodiment of the combined device according to the figure 4 in a modular configuration.
• The figures 11 and 12 schematically represent a detailed view of the lower part of the combined device with and without connection plate, respectively.
• The figure 13 schematically represents a perspective view of the connection plate according to the figure 10 .
• The figure 14 schematically represents a detailed view of the lower part of the second embodiment of the combined device according to the figure 4 including a multi-zone heating kit.

A combined device for heating sanitary water and heating water for a room is proposed. This combination device is configured to hang from a support above the floor. In particular, the combined device comprises means of attachment to a support to suspend it above the ground. The term "suspend" means that the weight of the combined device 50 is supported by the support 112 in its entirety. In other words, the fixing means are configured to suspend the combined device 50 entirely above the ground. This means in particular that the fastening means make it possible to suspend in particular a sanitary water storage tank of the combined device 50 above the ground. The support 112 is preferably a wall of the room. The fixing means preferably comprise an interface structure between the support 112 and modules formed by the combined device 50. This interface structure is for example a frame or a ladder fixed to the wall or to the support 112 on which the combined device 50 is suspended. This interface structure allows the distribution of the forces on the support 112 to facilitate and perpetuate the installation of the combined device 50. Indeed, a wall can be non-bearing and therefore not very suitable for supporting heavy loads. suspended. For reference, the combined device 50, when filled with water, weighs more than 200 kg.

Known combined devices, such as the combined device 10, are generally "on a base", i.e. placed on the ground, because their size and their mass do not make it possible to envisage a suspension on a support 112.

In addition, the combined device comprises a connection plate as described in connection with the figure 10 , 11 , 13 and 14 .

The size and the mass of the combined device 50 can be reduced by conforming the combined device 50 according to a modular configuration. In this configuration, the combined device 50 is divided into at least two modules. Preferably, each module is configured to have a mass less than or equal to 55 kg when they are empty of water, preferably less than or equal to 50 kg, more preferably less than or equal to 45 kg. This modular configuration makes it easier to install and set up the combined device 50, in particular by a single installer. Indeed, by limiting the mass of each module to 55 kg, it is made regulatory that the combined device 50 be installed by a single installer. Reducing the mass of the combined device 50 also makes it easier to suspend the combined device 50 from the support 112 via the fixing means 110. A suspended solution makes it possible to reduce the surface taken up on the ground by the combined device 50, which corresponds to a current expectations of users, particularly in the construction of new housing and offices.

This limitation of the mass of the modules is in particular made possible by the installation of a storage tank 52 having an interior volume less than or equal to 150 dm3, preferably less than or equal to 100 dm3.

Limiting the mass is also obtained by arranging the heat exchanger configured to exchange heat with the sanitary water outside the storage tank 52 of sanitary water. Thus, the interior volume of the storage tank 52 is fully available for storing sanitary water, without a heat exchanger within it. The volume available inside the storage tank 52 is thus greater than in the case of a coil tank for the same external volume of the storage tank 52. Indeed, the "dead" or unavailable volume located at the location of the coil and below it is not present here. The dimensions and the mass of the storage tank 52 can be reduced compared to the storage tank 14 while maintaining the same useful volume of sanitary water storage.

To further facilitate the installation of these modules, they are preferably configured to be connected to each other, by arranging the modules above each other. Preferably, the maximum height of the combined device 50 is less than or equal to 150 cm, preferably less than or equal to 145 cm.

Each module preferably comprises a casing in which the constituent elements of the module are arranged. By way of example, when a module comprises a heat exchanger, the heating water and sanitary water circuits and a connection plate, these elements are all arranged inside the module casing. For the interconnection of the modules with each other, each of the module boxes preferably comprises means of connection with another module box. Even more preferably, when a module comprises a sanitary water storage tank, the module casing is formed by the outer casing of the storage tank.

According to an example shown in the figure 10 , in this modular configuration, the combined device 50 comprises a first module 114 and a second module 116. The first module comprises a storage tank 52 for sanitary water. The second module 116 comprises a heat exchanger configured to perform a heat exchange between the heat transfer fluid and a fluid present in the domestic water heating circuit, and between the heat transfer fluid and heating water present in the circuit heating water heater. This second module 116 also preferably comprises the heating water and sanitary water circuits and a connection plate.

The fixing means 110 are preferably configured to fix the first 114 and second 116 modules to the support independently of each other.

A first embodiment of the combined device is shown in picture 3 wherein the combined device 40 comprises a plurality heat exchangers to exchange heat with the heat transfer fluid. A second embodiment of the combined device is shown in figure 4 wherein the combined device 50 comprises a single heat exchanger for exchanging heat with the heat transfer fluid. In these two embodiments, the domestic water heating and heating water heating circuits are arranged so that no heat exchanger is present inside the water storage tank. sanitary. In other words, in these two embodiments, the heat exchanger(s) making it possible to exchange heat between the heat transfer fluid and the sanitary water are arranged outside the storage tank.

These two embodiments must be considered as examples of embodiment of the combined device according to the invention and not as the only possible configurations for the combined device. The parts and assemblies common to the first and second embodiments bear the same references.

According to picture 3 a first embodiment of a combined device 40 is proposed. The combined device 40 comprises a heating water circuit 56 intended to be connected to heating devices (not shown) of a room L, such as radiators. The combined device 40 also comprises a first heat exchanger 41 capable of exchanging heat between a heat transfer fluid circuit 62 and the heating water circuit 56. In particular, the heat transfer fluid circuit 62 exchanges heat between a external environment E to the room L and the heating water circuit 18 present inside the room L. To do this, an outdoor unit 60 is placed at the level of the external environment E and configured to exchange heat with the circuit of heat transfer fluid 62. A first circulator 46 allows the circulation of fluid inside the heating water circuit 56.

The outdoor unit 60, the heat transfer fluid circuit 62 and the first heat exchanger 41 form a heat pump able to regulate the temperature of the heating water present in the heating water circuit 56.

The combined device 40 also comprises a sanitary water storage tank 52 and a sanitary water circuit 54 for supplying sanitary water to at least one sanitary water distribution device (not shown).

Sanitary water circuit 54 comprises a sanitary water distribution circuit 82 in fluid communication with storage tank 52 and intended to be connected to said at least one sanitary water distribution member.

For heating the sanitary water, the sanitary water circuit 54 further comprises a sanitary water heating circuit 80. The combined device 40 comprises a second heat exchanger 42 capable of exchanging heat between the circuit 56 and the domestic water heating circuit 80. In particular, the domestic water heating circuit 80 is connected to the storage tank 52. A second circulator 44 allows the circulation of fluid to the inside the domestic hot water heating circuit 80.

The first embodiment of the combined device therefore comprises two heat exchangers. The heating water heating circuit is merged with the heating water circuit 56.

As shown on the picture 3 , the storage tank 52 has no heat exchanger within it. In this case, the sanitary water heating circuit 80 is in fluid communication with the sanitary water distribution circuit 82. In other words, the sanitary water heating circuit 80 forms an open loop opening inside the storage tank 52. The fluid circulating inside the sanitary water heating circuit 80 is therefore sanitary water. In particular, the fluid circulating inside the sanitary water heating circuit 80 is the sanitary water distributed to said at least distribution member. The temperature of the sanitary water distributed is therefore here regulated by direct heat exchange with the heating water circuit 56 via the second exchanger 42. In this open loop configuration, the storage tank 52 is preferably a hot water tank. cannulas as shown in figure 8 and described below.

The absence of a heat exchanger inside the storage tank, in particular a coil-type exchanger, makes it possible to increase the volume available inside the storage tank 52 or, more advantageously, to reduce its external dimensions for the same available volume. Such indicated above, the presence of a heat exchanger, in particular a coil, inside the storage tank 52 reduces the interior volume available. This imposes an oversizing of the storage tank 52 for a desired maximum volume of sanitary water inside the storage tank 52. Thus, the absence of an exchanger inside the storage tank 52 makes it possible to reduce the number and the volume of the components of the combined device, and therefore its mass, with respect to the combined device 10 of the figure 1 .

In addition, part of the mass gain is linked to the type of exchanger itself. Indeed, a coil heat exchanger is much bulkier/heavier than a heat exchanger external to the storage tank 52. With a coil type heat exchanger, the water in the storage tank 52 is heated by natural convection . You therefore need a very large heat exchanger to have acceptable performance. Conversely, the water is heated by forced convection with an external heat exchanger, which significantly increases the performance of the exchange.

According to figure 4 , a second embodiment of the combined device is proposed. The combined device 50 comprises a sanitary water storage tank 52 and a sanitary water circuit 54 in fluid communication with the storage tank 52. The sanitary water circuit 54 is intended to be connected to at least one device sanitary water distribution (not shown). The combined device 50 also comprises a heating water circuit 56 intended to be connected to at least one room heater (not shown).

For heating the heating water and the sanitary water, the combined device 50 also comprises a heat exchanger 58 in which a heat transfer fluid is adapted to circulate via a heat transfer fluid circuit 62. The combined device 50 is of preferably coupled to an outdoor unit 60 disposed outside the room. The heat exchanger 58, the coolant circuit 62 and the outdoor unit 60 form a heat pump. The heat exchanger 58 is configured to perform a heat exchange between the heat transfer fluid and sanitary water present in the sanitary water circuit, and between the heat transfer fluid and heating water present in the circuit of heating water. In other words, the heat exchanger 58 is configured to receive three fluids and to transmit heat to two of these fluids via the heat transfer fluid. The heat exchanger 58 thus corresponds to a three-way heat exchanger which makes it possible to carry out a direct heat exchange between the heat transfer fluid and the heating water, but also a direct heat exchange between the heat transfer fluid and the heat transfer fluid. sanitary water.

In addition, the domestic water heating and heating water heating circuits are arranged separately to allow dissociation between the heating of the domestic water and the heating of the heating water. The domestic water heating circuit corresponds to a portion of the domestic water circuit 54 putting the storage tank 52 in fluid communication with the heat exchanger 58. The heating water heating circuit is merged with the heating water circuit 56. Preferably, the domestic water heating and heating water heating circuits do not include any common pipe portion. This separate heating arrangement allows the combined device 50 to have a dedicated loop for heating sanitary water. Thus, it is possible to carry out simultaneous heating of the heating water and the sanitary water. Domestic water heating strategies are thus more flexible. Further optimization can therefore be achieved. This is particularly advantageous in terms of user comfort and energy consumption compared to the combined device 10 of the prior art shown in figure 1 .

In addition, this independent configuration of the water heating circuits makes it possible to use the domestic water from the domestic water heating circuit for defrosting the outdoor unit 60. Indeed, when it is cold and wet, the outdoor unit 60 of the heat pump can ice up. This is a normal and expected phenomenon in the operation of the outdoor unit 60. To defrost this outdoor unit 60, it is generally provided to reverse the operation of the heat pump, ie the heat pump takes heat from inside room to heat the outdoor unit 60. This relatively short phenomenon, generally less than 15min, can cause discomfort on the user side, on the one hand, and can also lead under certain conditions to a risk of the water circuit freezing heating 56 at its interface with the heat transfer fluid. That interface is located at the heat exchanger 58 in the embodiment of the figure 4 . This phenomenon can damage the heat pump. Thanks to this independent configuration, the domestic water heating circuit can be used at any time to complete or completely carry out a defrosting operation by exchanging heat with the heat transfer fluid. Indeed, the volume of sanitary water present in the sanitary water circuit 54, even when it is at a low temperature, contains enough energy to defrost the outdoor unit 60.

As represented in figure 5 , the heat exchanger 58 comprises three pipes nested one inside the other to define three fluid flow zones. By "nested" is meant the fact that a first flow zone 70 is placed inside a second flow zone 72 which is itself placed inside a third flow zone 74. Said three conduits comprise a first 64, a second 66 and a third 68 conduit forming the first 70, the second 72 and the third 74 fluid flow zones. Preferably, the first 70, second 72 and third 74 flow zones have a circular section extending around a trajectory or a profile A. The second 72 and third 74 flow zones are preferably annular. Preferably again, the first 64, second 66 and third 68 pipes are concentric so as to obtain three flow zones uniformly distributed around the path A.

A heat exchange wall 76 is arranged between the first 70 and the second 72 exchange zones as well as between the second 72 and the third 74 exchange zones. These exchange walls 76 correspond to the walls of the first 64 and second 66 pipes. These exchange walls 76 allow the transmission of heat between the two fluids present on either side of the exchange wall 76.

According to a preferred configuration of the heat exchanger 58, the first flow zone 70 is formed inside the first pipe 64. The second flow zone 72 is formed between the first 64 and second 66 pipes. The third flow zone 74 is formed between the second 66 and third 68 conduits.

According to an even preferred configuration, the second flow zone 72 is configured to transport the heat transfer fluid from the heat transfer fluid circuit 62. In addition, each of the first 70 and third 74 flow zones is configured to transport one of the sanitary water and heating water. For regulatory issues, the pipe separating the second flow zone 72 from the flow zone carrying the sanitary water preferably comprises a double wall. Thus, the sanitary water is further protected from possible contamination. Preferably, the first flow zone 70 is configured to transport sanitary water. In this configuration, the first pipe 64 is preferably made of copper. In particular, this first pipe 64 is preferably a copper tube, the internal and external surfaces of which are smooth so as to be very robust against scaling.

To optimize the positioning and size of the heat exchanger 58, the trajectory or profile A is preferably helical, as shown on the figure 6 . In other words, the first 64, second 66 and third 68 pipes preferably extend around themselves along a longitudinal axis B. In other words again, the first 64, second 66 and third 68 pipes preferably extend along a helical path A common to the three pipes.

As illustrated in figure 7 , the first 70, second 72 and third 74 flow zones are preferably connected to the heat transfer fluid circuit 62, to the heating water circuit 56 and to the sanitary water circuit 54 via exchanger connections 78 arranged at the level of the ends of the first 64, second 66 and third 68 pipes.

As seen on the figure 4 , the heat exchanger 58 is preferably arranged outside the sanitary water storage tank 52. In this case, the sanitary water circuit 54 comprises a sanitary water heating circuit 80 intended to put the storage tank storage 52 in fluid communication with the heat exchanger 58 and a sanitary water distribution circuit 82 intended to place the storage tank 52 in fluid communication with the distribution members of a sanitary water installation. The sanitary water heating circuit 80 corresponds to a sanitary water heating circuit.

The sanitary water heating circuit 80 comprises a first flow pipe 84 connecting the storage tank 52 to a sanitary water inlet of the heat exchanger 58 and a first return pipe 86 connecting a sanitary water outlet from the heat exchanger 58 to the storage tank 52. In particular, the first flow line 84 and the first return line 86 are each connected to one end of the first flow zone 70 of the heat exchanger 58 via the exchanger fittings 78. For the circulation of sanitary water inside the sanitary water heating circuit 80, the latter also comprises a first circulator 88. The sanitary water heating circuit 80 forms a domestic hot water heating circuit.

The combined device 50 further comprises a controller 87 configured to regulate the speed of the first circulator 88 so as to regulate the flow rate of sanitary water circulating in the sanitary water heating circuit 80. The controller 87 is also configured to regulate the flow rate of the heat transfer fluid. The simultaneous or selective regulation of the flow rate of circulation of the sanitary water and of the heat transfer fluid makes it possible to regulate the temperature of the sanitary water supplied to the storage tank 52. Such a controller 87 can also be used in the combined device 40 of the first embodiment for regulating the flow rate of the heat transfer fluid and the speed of the second circulator 44. The controller 87 makes it possible to optimize the performance during heating or to guarantee the resistance over time of the exchanger (for example, by avoiding the risk icing).

The domestic water distribution circuit 82 comprises a second outgoing pipe 90 connecting the storage tank 52 to a domestic water outgoing connection 92. This second outgoing pipe 90 can otherwise be considered as an outgoing pipe from hot water from the tank to a sanitary water installation (not shown). This sanitary water installation comprises in particular the sanitary water distribution members mentioned above. The sanitary water distribution circuit 82 also includes a second return pipe 94 connected to a sanitary water return connection 96. The second return pipe 94 places the storage tank 52 in fluid communication with this return connection. sanitary water 96. This second The flow line 90 can otherwise be considered as a cold water return line from a sanitary water source of the sanitary water installation. This cold water preferably corresponds to the water supplied by the running water distribution network of the locality. The temperature of this water is generally between 5 to 25° C. at the level of the combined device 50.

To limit the number of connections of the sanitary water circuit 54 with the storage tank 52, the second return pipe 94 is connected to the first flow pipe 84 by means of a T-piece 98. In other words , the second return pipe 94 is indirectly connected to the storage tank 52 via the first outgoing pipe 84. The term "T-piece" is understood to mean a pipe portion having three orifices in fluid communication with each other. Thus, tee fitting 98 includes a first port in fluid communication with storage tank 52, a second port in fluid communication with heat exchanger 58, and a third port in fluid communication with the second return line. 94.

According to the invention, the combined device 50 is configured to be entirely suspended above the ground. The second flow pipe 90, the first return pipe 86 and the pipe portion between the storage tank 52 and the T-piece 98 are connected to the storage tank 52 preferably in a lower part of the storage tank 52. A such a provision is for example visible on the figure 8 and 10 .

The heating water circuit 56 comprises a heating water return line 100 connecting a heating water return fitting 102 to an inlet of the heat exchanger 58. The heating water circuit 56 comprises also a heating water outlet pipe 104 connecting a heating water outlet connection 106 to an outlet of the heat exchanger 58. In particular, the heating water return pipe 100 and the heating water outlet 104 are each connected to one end of the third flow area 74 of the heat exchanger 58 via the exchanger connections 78. For circulating the heating water inside the heating water circuit 56 when this is connected to a local heating installation, the heating water circuit 56 also includes a second circulator 108.

The controller 87 is further configured to regulate the speed of the second circulator 108 so as to regulate the flow rate of the heating water circulating in the heating water circuit 56. The simultaneous or selective regulation of the flow rate of circulation of the heating water and heat transfer fluid regulates the temperature of the heating water supplied to the heating system. Such a controller 87 can also be used in the combined device 40 of the first embodiment to regulate the flow rate of the heat transfer fluid and the speed of the first circulator 46.

When the combined device 50 is put into service, the sanitary water installation is connected to the combined device 50 via the outlet 92 and return 96 connections for sanitary water. Similarly, the room heating installation is connected to the combined device 50 via the flow 106 and return 102 connections for heating water.

The storage flask 52 is preferably a cannulated flask. In other words, the storage tank 52 is connected to the first 80 and second 82 sanitary water circuits by means of nozzles arranged inside the storage tank 52. The use of nozzles makes it possible in particular to arrange the inlets or outlets of the first 80 and second 82 sanitary water circuits at predetermined positions inside the storage tank 52. In the case of a tube tank, the storage tank 52 therefore does not contain no heat exchanger, in particular no coil-type heat exchanger. The volume available inside the storage tank 52 is thus greater than in the case of a coil tank for the same external volume of the storage tank 52. Indeed, the "dead" or unavailable volume located at the location of the coil and below it is not present here. Thus, the storage tank 52 preferably has an interior volume less than or equal to 150 dm3, preferably less than or equal to 100 dm3. In comparison, the combined device 10 of the art prior is generally used with a storage tank 12 having an interior volume, before installation of the coil, of 190 dm3. This allows the combination device 52 to be more compact and have a lower manufacturing cost than the combination device 10 of the prior art. The storage balloon 52 of the first embodiment of the combined device 40 is also preferably a cannulated balloon as described above.

This configuration comprising a storage balloon 52 with cannulas allows the combined device 52 to have a maximum height along a longitudinal axis of extension C of the storage balloon 52 less than or equal to 150 cm, preferably less than or equal to 145cm.

As shown on the figure 8 , the storage balloon 52 comprises a combined cannula 118, a suction cannula 120 as well as a discharge cannula 122 all opening inside the storage balloon 52.

The combination cannula 118 is configured to be connected to the first outgoing line 84. The second return line 94 is connected to the first outgoing line 84 by means of a tee fitting so that the discharge into the storage tank 52 of sanitary water from the second return pipe 94 is carried out through the combined cannula 118. The combined cannula 118 extends inside the storage tank 52 so that its end orifice opens at the level of a lower part of the storage tank 52. Thus, the combined cannula 118 is configured to operate either in suction or in discharge depending on the mode of operation of the sanitary water circuit 54. Indeed, the suction cannula 118 is configured to draw cold water from the lower part of the storage tank 52 during a heating phase of the sanitary water, i.e. when there is circulation of the sanitary water inside the first circuit of sanitary water 80. A co ntrario, the suction cannula 118 is configured to deliver sanitary water inside the storage tank 52 during a withdrawal of sanitary water via the second suction cannula 120, i.e. when there is circulation of sanitary water inside the second sanitary water circuit 82.

In addition, the combined cannula 118 preferably comprises a jet aerator to allow the suction or the discharge of the sanitary water in a direction transverse to the longitudinal axis of extension C of the storage tank. 52. The aerator can be formed on combination cannula 118 by occluding its distal end and forming one or more side ports on a peripheral wall of combination cannula 118. sanitary water coming from the second return line 94 when the latter is made along the longitudinal axis of extension C of the storage tank 52. The discharge cannula 122 also preferably includes a jet aerator at its distal end, ie the end where the water is pushed back inside the storage tank 52.

Alternatively, the combined device 50 may have no T-fitting so that each of the first outgoing pipe 84 and second return pipe 94 open out distinctly inside the storage tank 52. In this alternative embodiment, the combined cannula 118 functions only as a suction cannula and an additional discharge cannula is arranged at the end of the second return line 94.

The suction cannula 120 is configured to be connected to the second starting pipe 90. The suction cannula 120 extends inside the storage balloon 52 so that its end orifice opens at the level of an upper part of the storage tank 52. Thus, the suction cannula 122 is configured to suck hot water from the upper part of the storage tank 52.

The discharge cannula 122 is configured to be connected to the first return pipe 86. To obtain a good compromise between performance and user comfort, the distal end of the discharge cannula 122 is located at an intermediate or median position. the height of the internal cavity of the storage tank 52. In fact, positioning too close to the upper part of the storage tank 52 would cause this upper part to stir. This brewing is harmful because it does not make it possible to keep a reserve of hot water in the event of an unexpected draw-off occurring. Additionally, positioning too close to the bottom of the storage balloon 52, and therefore the combination cannula 118, would result in a drop in performance.

In particular, the distal end of the delivery cannula 122 is located at a position distant from the upper wall of the storage balloon 52 by at least 20% of the height of the internal cavity of the storage balloon 52 and distant from the lower wall of the storage balloon 52 at least 20% of the height of the internal cavity of the storage balloon 52. In other words, the distal end of the delivery cannula 122 is located between 20% and the height of the internal cavity of the storage balloon 52. Alternatively, the distal end of the delivery cannula 122 can be located between 30% and 70% of the height of the internal cavity of the storage balloon 52.

To obtain an optimum compromise between performance and user comfort, the distal end of the delivery cannula 122 is preferably located at approximately 50% of the height of the internal cavity of the storage balloon 52.

Thanks to the storage tank 52 with cannulas, the sanitary water is taken from the lower part of the storage tank 52 to be heated in the heat exchanger 58, ie the part of the storage tank 52 where the cold water is discharged by the second return pipe 94. Consequently, even if the ball is not entirely cold, performance will not be degraded. Thus, effective heating can be carried out without risking a situation of discomfort for the user. This is due to the fact that it is possible, if necessary, to supply the heating water circuit 56 without however cutting off the heating of the sanitary water. It is therefore possible to make optimized heating without being constrained by the heating water circuit 56. If a withdrawal by the distribution devices occurs during the heating of the sanitary water, the temperature of the sanitary water immediately reduces at the inlet of the heat exchanger 58 which reduces the condensation temperature inside the storage tank 52. The coefficient of performance of the heat pump is therefore improved. Ultimately, this withdrawal will have a very low impact on the average performance of the domestic water heater. The domestic water heating phases can thus be longer than in the case of a coil tank for better performance.

As shown on the figures 9 and 10 , the combined device 50 comprises means 110 for fixing the combined device 50 to a support 112 configured to suspend the combined device 50 completely above the ground.

According to a preferred configuration of the combined device 50, the heat exchanger 58 is arranged below the storage tank 52, as illustrated in the figure 8 . This configuration makes it possible to reduce the transverse dimensions to the longitudinal axis of extension C of the combined device 50 compared to a configuration where the heat exchanger 58 extends around the storage tank 52.

The external dimensions of the heat exchanger 58 are preferably less than or equal to the external dimensions of the storage tank 52. Thus, the transverse size of the combined device 50 is substantially constant along the longitudinal axis of extension C. Alternatively, the external dimensions of the heat exchanger 58 can be greater than the external dimensions of the storage tank 52.

The combined device 50 comprises a module housing 57, an upper portion of which receives the heat exchanger 58. The module housing 57 corresponds to at least a portion of the outer casing of the second module 116. The module housing 57 comprises preferably a first connection surface 59 adapted to cooperate with a second connection surface of the first module 114. In particular, a second connection surface 61 is formed on the storage tank 52 so as to connect the first 114 and second 116 modules. Preferably, the first 59 and second 61 connection surfaces are complementary in shape so as to facilitate the positioning of the first 114 and second 116 modules with respect to each other.

To allow the fluidic connection between the first 114 and second 116 modules, the combined device 50 comprises interface connections between the storage tank 52 and the sanitary water circuit 54. In particular, the first 114 and second 116 modules are in fluid communication with each other at three interface connections.

A first interface connection 142 is arranged at the level of the first outgoing line 84, upstream of the tee fitting 98. This first interface connection 142 allows the connection of the first outgoing line 84 and the second return line 94 to the first suction cannula 118. A second interface connection 144 is arranged at the level of the second outgoing line 90 This second interface connection 144 allows the connection of the second outgoing pipe 90 to the second suction cannula 120. A third interface connection 146 is arranged at the level of the first return pipe 86. This third connection interface 146 allows the connection of the first return line 86 to the third suction cannula 122. Alternatively, when the combined device 50 does not include a T-fitting 98, ie the second return line 94 is directly Connected to storage tank 52, the first 114 and second 116 modules are in fluid communication with each other at four interface connections.

When the heat exchanger 58 extends around the helical path A, it forms an annular structure in the middle of which is formed a space 148. This space 148 is preferably circular and extends around the longitudinal axis B. To improve the compactness of the combined device 50, at least a portion of the sanitary water 54 and heating water 56 circuits extends inside this space 148. In this way, the heat exchanger 58 is arranged on the periphery of the second module 116 and at least a portion of the domestic water 54 and heating water 56 circuits extends inside the heat exchanger 58. Preferably, the first 142, second 144 and third 146 interface connections are arranged at this space 148 when the first 114 and second 116 modules are connected to each other.

The figure 9 shows a configuration of the combined device 50 in which the heat exchanger 58 is arranged so as to extend around the storage tank 52.

In these two configurations of the heat exchanger 58, below or around the storage tank 52, the heat exchanger 58 and the storage tank 52 are preferably concentric. In other words, the longitudinal axis B of the heat exchanger 58 coincides with the longitudinal extension axis C of the storage tank 52.

In addition, the combined device 50 comprises a connection plate 124 of the heating water circuit 56 to a local heating water installation and of the sanitary water circuit 54 to a local sanitary water installation. Such a connection plate 124 is visible on the figure 10 , 11 , 13 and 14 . In particular, the outlet 92 and return 96 connections for sanitary water are mounted on the connection plate 124 to connect the sanitary water circuit 54 to the sanitary water installation of the premises. The heating water flow 106 and return 102 fittings are mounted on the connection plate 124 to connect the heating water circuit 56 to the heating water installation of the room. Thus all of the connections for the domestic water 54 and heating water 56 circuits are arranged at the same interface. The connection of the combined device 50 to the heating water and sanitary water installations of the premises is thus facilitated for the installer. The connection plate 124 makes it possible to know prior to the installation of the combined device 50 the position of each of the connections. This is particularly useful when the combined device 50 is intended to be installed in a new building because the installation of the heating water and sanitary water installations of the room can be carried out before the installation of the combined device 50. Connection plate 124 therefore allows great flexibility in setting up these installations as well as the combined device 50.

Such a connection plate 124 can also be used in the combined device 40 of the first embodiment and be connected to the heating water circuit 56 and to the sanitary water circuit 54.

In addition, the grouping of the connections on the connection plate 124 allows the use of many components already used for wall-mounted boilers, which makes it possible to reduce the manufacturing cost of the combined device 50.

The connection plate 124 is preferably arranged below the storage tank 52 to improve its accessibility, in particular to an installer. The connection plate 124 is preferably arranged at the rear of the combined device 52. This position behind the connection plate 124 allows it to be fixed to a support. The turntable of connection 124 can be arranged at and/or under the fixing means 110.

The connection plate 124 is preferably formed by an elongated plate comprising a plurality of orifices capable of receiving a plurality of connectors. The connection plate 124 can also include dedicated fixing means 126 to allow the fixing of the connection plate to the support 112 or to any other support.

As shown on the Figures 11, 13 and 14 , , the combined device 50 can also comprise a safety connection 129 configured to connect the sanitary water circuit 54 to a safety group 128. In particular, the safety group 128 is connected between the T-piece 98 and the connection domestic water return 96.

This safety group makes it possible to regulate the pressure inside the storage tank 52. According to the regulations in force (NF DTU 60 - Plumbing), a safety group must be installed on the cold water inlet (or pipe domestic water return) of a domestic water storage tank. The safety unit often involves laborious installation and can be very bulky in addition to the volume occupied by the combined device 50. The simplification of its installation is therefore a significant benefit for its installer. The installation of this safety group is here simplified by the presence of the safety connection 129 allowing the assembly of a safety group 128 according to the needs of the user.

The combination device 40 of the first embodiment may also include a safety connector 128 so as to be connected to a safety group.

The combined device 50 can be configured to be connected to a multi-zone heating kit making it possible to connect the combined device 50 to several heating water installations. Such a multi-zone heating kit 136 is shown in the figure 14 . This multi-zone heating kit 136 allows the temperature to be regulated selectively in several zones of the room, in particular in two distinct zones. The multizone heating kit 136 can be installed initially, ie as standard, or subsequently as an accessory on the combined device 50. To allow the installation of this heating kit multizone 136, the combined device 50 may include an additional flow connector 132 and an additional heating water return connector 134 arranged on the connection plate 124. These additional flow connectors 132 and return 134 of heating water facilitates the installation of a multi-zone heating kit 136 and avoids the user having to add an additional device, the installation of which is often difficult because the connection to the combined device 50 is not specifically provided. A space is provided between the storage tank 52 and the connection plate to receive the multizone heating kit 136. The fact of allowing the integration of the multizone heating kit 136 to the combined device 50 makes it possible to avoid the use of a box specific to the multi-zone heating kit 136 and therefore to reduce the cost.

The combined device 50 may also include a backflow preventer 140 to fill the heating water circuit 56 with water from the city water distribution network at the time of commissioning, while preventing water from the heating water circuit 56 from entering this distribution network. The backflow preventer 140 is placed between the heating water return pipe 100 and the second return pipe 94. In particular, the backflow preventer 140 is preferably placed between the heating water return connection 102 and the return connection sanitary water 96. Even more preferably, the backflow preventer 140 is mounted on the connection plate 124 at the level of the heating water return connection 102 to improve its accessibility.

The combined device 40 according to the first embodiment can also include additional heating water flow 132 and return 134 fittings for connecting a multizone heating kit 136 as well as a backflow preventer 140.

To facilitate its installation, the combined device 50 can advantageously be structured in a modular manner. In other words, the combined device 50 can be structurally divided into predefined subsets. Preferably, the sub-assemblies or modules have a mass less than or equal to 55 kg when they are empty of water, preferably less than or equal to 50 kg, more preferably less than or equal to 45 kg. That modular structure makes it possible to advantageously distribute the mass of the combined device 50 into several interconnectable modules. This distribution is preferably carried out so that an installer can carry and maneuver each of the modules alone.

As shown on the figures 10 to 12 , in modular configuration, the combined device 50 comprises a first module 114 comprising the sanitary water storage tank 52 and a second module 116 comprising the heat exchanger 58, the heating water circuits 56 and sanitary water 54 as well as the connection plate 124. In modular configuration, the fixing means 110 are preferably configured to fix to the support 112 the first 114 and second 116 modules independently of one another. Thus, the fixing means 110 can comprise first means for fixing the first module 114 to the support 112 and second means for fixing the second module 116 to the support 112.

A method of mounting the combined device 50 is also provided. This method includes fixing the first module 114 to the support 112 so as to suspend the first module 114 above the ground. The first 114 and second 116 modules are then positioned relative to each other. The method also comprises fixing the second module 116 on the support 112 so as to suspend the second module 116 above the ground. In this second fixing step, the second module 116 can alternatively be fixed only to the first module 114 so to be suspended above the ground. In the latter case, the weight of the second module 116 is taken up in whole or in part by the first module 114.

Still alternatively, the assembly process can be started by fixing the second module 116. The first 114 and second 116 modules are then positioned relative to each other. Finally, the first module 114 is fixed to the support 112 so as to suspend the first module 114 above the ground. In this second fixing step, the first module 114 can alternatively be fixed only to the second module 116 so as to rest on the second module 116. In the latter case, the weight of the first module 114 is taken up in whole or in part by the second module 116.

There is also proposed a system for heating the sanitary water and the heating water of a room comprising the combined device 50. The heating system also comprises at least one sanitary water installation comprising at least one point of drawing and at least one heating water installation comprising at least one heat emission system for heating the room. Said at least one sanitary water installation and at least one heating water installation are respectively connected to the sanitary water circuit 54 and to the heating water circuit 56 of the combined device 50.

Claims (17)

1. A combined device (40, 50) for heating domestic water and water for heating a room (L), said combined device (40, 50) comprising:

   - a storage tank (52) for domestic water,

   - a domestic water circuit (54) in fluid communication with the storage tank (52),

   - a heating water circuit (56),

   - one or several heat exchangers (41, 42, 58) for a heat pump for transferring heat to heating water present in the heating water circuit and to domestic water present in the domestic water circuit,

   - fastening means (110) for fastening the combined device (40, 50) to a support (112),

   - a coupling plate (124) for coupling the heating water circuit (56) to at least one heating water installation of the room and for coupling the domestic water circuit (54) to a domestic water installation of the room,

   characterized in that the fastening means (110) are configured to suspend the combined device (40, 50) fully above the ground.
2. The combined device (40, 50) according to claim 1, wherein the combined device (40, 50) is structured modularly and comprises:

   - a first module (114) including the domestic water storage tank,

   - a second module (116) including the heat exchanger, the heating water circuit (56) and domestic water circuit (54) and the coupling plate (124),

   the fastening means (110) being configured to fasten the first (114) and second (116) modules to the support independently of one another.
3. The combined device (40, 50) according to claim 2, wherein the first (114) and second (116) modules are configured to be coupled to one another while having the first module (114) above the second module (116).
4. The combined device (40, 50) according to claim 2 or 3, wherein each of the first (114) and second (116) modules is configured to have a mass less than or equal to 55 kg when they are empty of water, preferably less than or equal to 50 kg, still more preferably less than or equal to 45 kg.
5. The combined device (40, 50) according to any one of the preceding claims, wherein the storage tank (52) has an inner volume less than or equal to 150 dm³, preferably less than or equal to 100 dm³.
6. The combined device (40, 50) according to any one of the preceding claims, wherein the maximum height of the combined device (40, 50) is less than or equal to 150 cm, preferably less than or equal to 145 cm.
7. The combined device (40, 50) according to any one of the preceding claims, wherein the domestic water circuit (54) and heating water circuit (56) are configured to arrange the coupling plate (124) and/or the heat exchanger(s) (41, 42, 58) below the storage tank (52).
8. The combined device (40, 50) according to any one of the preceding claims, further comprising:

   - at least one heating water outlet coupling (106) and at least one heating water return coupling (102) that are mounted on the coupling plate (124) in order to connect the heating water circuit (56) to said at least one heating water installation of the room,

   - at least one domestic water outlet coupling (92) and at least one domestic water return coupling (96) that are mounted on the coupling plate (124) in order to connect the domestic water circuit (54) to said domestic water installation of the room.
9. The combined device (50) according to claim 8, comprising a single heat exchanger (58) configured to perform a heat exchange:

   • between the heat transfer fluid and the domestic water present in a domestic water heating circuit (80), and

   • between the heat transfer fluid and the heating water present in the heating water circuit (56),

   the domestic water circuit (54) comprising:

   - the domestic water heating circuit (80) comprising a first domestic water outlet pipe (84) connecting the storage tank (52) to a domestic water inlet of the heat exchanger (58) and a first domestic water return pipe (86) connecting a domestic water outlet of the heat exchanger (58) to the storage tank (52),

   - a domestic water distribution circuit (82) comprising a second domestic water outlet pipe (90) connecting the storage tank (52) to said at least one domestic water outlet coupling (92) and a second domestic water return pipe (94) connecting said at least one domestic water return coupling (96).
10. The combined device (50) according to claim 9, wherein the second return pipe (94) is coupled to the first outlet pipe (84) using a T coupling (98).
11. The combined device (50) according to claim 10 in combination with claims 2 and 9, wherein the first (114) and second (116) modules are in fluid communication with one another at three interface connections:

    - a first interface connection (142) arranged at the first outlet pipe (84), upstream of the T coupling (98),

    - a second interface connection (144) arranged at the second outlet pipe (90),

    - a third interface connection (146) arranged at the first return pipe (86).
12. The combined device (40, 50) according to any one of the preceding claims, wherein the domestic water circuit (54) comprises a domestic water heating circuit (80), the domestic water heating circuit (80) and heating water circuit (56) being separate.
13. The combined device (50) according to any one of the preceding claims, wherein the heat exchanger (58) forms an annular structure in the middle of which a space (148) is formed, at least one portion of the domestic water circuit (54) and heating water circuit (56) extending inside this space (148).
14. The combined device (40, 50) according to any one of the preceding claims, wherein the heat exchanger (58) includes three pipes (64, 66, 68) interleaved with one another to define three fluid flow areas (70, 72, 74).
15. The combined device (40, 50) according to any one of the preceding claims, also comprising a safety coupling (129) configured to connect the domestic water circuit (54) to a safety unit (128) allowing the pressure to be regulated inside the storage tank (52), the safety unit (128) being arranged below the storage tank (52).
16. A system for heating domestic water and water for heating a room, comprising:

    - a combined device (40, 50) according to any one of the preceding claims,

    - at least one domestic water installation connected to the domestic water circuit (54) of the combined device (40, 50) and including at least one supply point,

    - at least one heating water installation connected to the heating water circuit (56) of the combined device (40, 50) and including at least one heat emission system for heating the room.
17. A method for mounting a combined device (40, 50) according to any one of claims 1 to 15 combined with claim 2, comprising the following steps:

    - fastening the first module (114) on a support (112) so as to suspend the first module (114) above the ground,

    - positioning the first (114) and second (116) modules relative to one another,

    - fastening the second module (116) on the support (112) so as to suspend the second module (116) above the ground,

    wherein the fastening steps are interchangeable.

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