FR2812377A1 - POWER SUPPLY ASSEMBLY BETWEEN A GENERATOR CARRYING A FLUID AT BASIC TEMPERATURE AND AT LEAST TWO CIRCUITS FOR USE OF THIS FLUID AT DIFFERENT TEMPERATURES - Google Patents

Abstract

The bi-temperature regulated manifold supply assembly is mounted as a charging circuit (26) of a hot water generator (1). It comprises an upstream distributor block (23) and a downstream distributor block (24) separated by a circulation pump (25). Each distributor block (23) or (24) has two chambers leading to the outside through outlets to at least two user circuits at different temperatures. The chambers of the upstream distributor block (23) communicate with each other by a controlled variable flow member (43) and those of the downstream distributor block (24) by a passage (50). The first circuit of use is mounted between the first chambers and the second circuit between the second chambers of the distributor blocks (23) and (24). This invention is mainly of interest to manufacturers of heating equipment.

Description

1i 2812377 Supply assembly between a generator carrying a fluid to

  a base temperature and at least two circuits for using this fluid at different temperatures. The present invention relates to a supply assembly for at least two circuits for using a fluid brought to a base temperature by a heat or cold generator. This power supply includes a regulated dual temperature collector ensuring the interface between the generator and the circuits for using heat or cold

  operating at different temperatures.

  The invention relates more particularly to a supply assembly between a generator for example of hot water and at least two circuits for using heat at different temperatures. An application in the field of heating a single house will be described below. It is understood that this invention applies to many other fields insofar as it involves at least two circuits for using the same fluid at different temperatures produced from a single

  heat or cold generator.

  Heating with hot water is taken here as a descriptive example without making it limiting. On the contrary, the invention remains valid and

  applicable in many other areas.

  The so-called underfloor heating has developed considerably in recent years for individual houses because it is in most cases the most suitable solution to provide a significant degree of comfort in terms of

  concerns the component of well-being linked to heating.

  This highly comfortable mode of heating uses one or more duct layouts

2 2812377

  heat transfer fluids according to arrangements and geometrical figures in layers of various simple or combined shapes. These conduits are intended to be embedded in the structure of the floor of the rooms to be heated. In these conduits circulates hot water at relatively low temperature in the heating sector, by

example around 20-40 C.

  This arrangement of conduits or tubes constitutes a heat emitting network which heats the floor screed and through it the interior volume of the corresponding room in a sufficiently uniform manner so that the occupant (s) feel (s) greater comfort than that brought by other modes

of heating.

  In the same living unit or in the same residential or working complex, there are often rooms or spaces which, for various technical reasons, are heated otherwise, for example only by radiators requiring hot water at more high temperature located in the 60-80 C range, or mixed by the

floor and by radiators.

  For reasons of simplification and cost, there is generally only one hot water generator, for example a single boiler for the two hot water heating circuits at temperatures

of different uses.

  This mix of modes results in the creation of an interface grouping together the functions of collector and mixer, for example in the form of a prefabricated assembly on which it suffices to perform

the different connections.

  For reasons of economy, when this interface assembly is delivered with the boiler, it is mounted by the installer of the boiler near it. Departures from distribution channels

3 2812377

  must be carried out near the boiler, that is to say away from the circuits of use, or else it is necessary to provide distribution sub-units, which significantly increases the cost of installation. For aesthetic reasons, we manage to pass the distribution tubes under the house to technically reach the rooms in an invisible way.

inside the house.

  We are therefore obliged, due to the distribution circuits starting from the boiler, to

  mount the regulator near the boiler.

  At this location, the regulator cannot

  ensure correct regulation of circuits.

  In addition, any repairs are difficult due to the difficulty of access and disassembly temporarily condemning the entire circuit. In recent installations, there is a request on the part of installers to place the collector in the middle of the house to better carry out the distribution and often upside down for

  feed the top pieces more easily.

  This provision, however, requires a plurality of pipes ensuring connections with the

  one for each type of heating, i.e.

  say a low temperature bond for underfloor heating and a higher temperature bond for

heating by radiators.

  This arrangement, which requires at least two outward and return lines of connection piping, has many disadvantages: When mounting is longer and more complicated, these visible connections are not aesthetic, they are not accessible on most their

trace.

  We know the publication of European application EP O 309 440 in the name of SCHWARZ Aloïse se

4 2812377

  relating to a two-circuit heating installation, one with hot water at low temperature for underfloor heating and the other with hot water at higher temperature for heating by radiators. This invention relates to a double collector

  enclosed in a thermally insulating box.

  The hydraulic inlet of this box is a simple round trip connection to the nearby boiler and the outlet serves three circuits: one for underfloor heating and the other two for heating by radiators. There are also three outgoing collectors, while there is only one return collector accepting both the return of the radiators and the return of the heated floor (s). There is a thermostatic or variable flow bypass by an overflow valve mounted between the flow and return, which allows to drift to the

  part of the incoming flow.

  This technical solution does not entirely solve the problem posed because of the difficulty of regulating and lowering the temperature of the circuit or circuits corresponding to heating by

floor.

  Indeed, the collector supplying this circuit

  is connected directly to the hot water supply.

  In addition, there is not really a mixing system, but a simple

bypass of the incoming flow.

  The power supply assembly comprising a bi-temperature regulated collector according to the invention has

  intended to remedy these various drawbacks.

  Other features and benefits of

  the invention will appear in the description which follows,

  given as an example and accompanied by the drawings in which:

2812377

  Figure 1 is a schematic overview of a house showing the distribution between two heating circuits, one by radiators, the other by the floor, and a boiler according to the technique prior to the present invention; Figure 2 is the same schematic overview showing the distribution between the same two heating circuits and a boiler using the dual temperature collector assembly; 10. FIG. 3 is an overall diagram illustrating the two-temperature collector assembly and its surrounding organs; Figure 4 is the diagram of the second collector in

its version with non-return valve.

  As already indicated, a descriptive example will be taken of a heating application within the framework of a mixed use in underfloor heating and in radiators with two circuits and a boiler with

  the interior of a dwelling house or building.

  It is understood that the invention is not limited to this type of application, but that it targets many others even beyond those

mentioned below.

  In the example described, the present invention relates to a bi-temperature regulated collector supply assembly ensuring the interface between a heat source, for example a hot water boiler and at least two circuits of use at different temperatures. . It could just as well be two

  cooling circuits and not heating.

  Thus, a heating application will be described below without excluding other applications such as industrial, for example in the food industry or in the field of cooking or the maintenance or reheating of dishes and many other applications, for example the

6 2812377

cleaning or laundry.

  As shown in FIG. 1, a mixed heating installation conventionally consists of a single boiler 1 distant from two types of operating circuits, one 2 by radiators such as 3, and the other 4 by at least one underfloor heating as 5 formed of a flat sheet form 6 representing the layout of a tube 7

transporting the heat transfer fluid.

  The radiators 3 conventionally comprising thermostatic valves 8 are connected by individual hydraulic supply links 9, 10 and 11 to a riser 12 through stage collectors such as 13 and 14. The riser 12 is

  specific to the heating circuit by radiators 3.

  This riser 12 starts from the upper circuit

boiler temperature 1.

  The heated floor 5 is connected through other floor collectors such as 15 to a riser 16 starting from the low temperature circuit of the

boiler 1.

  Note in this conventional arrangement the use of two separate risers 12 and 16 specific to each heating mode, namely

  by radiators and by heated floor (s).

  The present invention makes it possible to avoid the double hydraulic connection between the boiler and the point of birth of the distribution circuits to the elements and devices for dissipating heat by creating a primary circuit containing a

  bi-temperature regulated manifold assembly.

  The invention starts from the inventive principle which consists in connecting a generator of calories or frigories transmitted to a fluid brought to a basic temperature to at least two operating circuits operating at two different operating temperatures and this through a connection.

7 2812377

  single supply hydraulics connecting this generator to a manifold assembly from which the coolant or coolant fluid is dispensed

  supplying these at least two circuits.

  The invention will now be described in its environment. According to the descriptive example, the boiler 1 is hydraulically connected to a manifold assembly 17 by a single supply link 18 of high temperature water corresponding to that required for the radiators 3. This single hydraulic supply connection 18 consists of two conduits, one of which, the outgoing duct 19, starts from the normal heating outlet of the boiler, called the heating outlet 20 at the maximum temperature for heating by radiators and the other, the return duct 21, is connected to the return input 22 from boiler 1 for

  the admission of the fluid for its reheating.

  The circuits of use are in the example used for description two in number and of the type of those already described, namely a heating circuit by radiators such as 3 and a heating circuit by one or more heated floors such than 5, a system more generally called heating by

floor.

  The underfloor heating circuit uses water at low temperature of the order of 20 C to 40 C while the heating circuit by radiators such as 3 uses hot water at a higher temperature between 60 C and 80 C, i.e. approximately double the temperature used

  for the first underfloor heating circuit.

  The single hydraulic supply link 18 coming from the boiler 1 makes it possible to place the manifold assembly 17 as close as possible to the circuits of use in order to simplify assembly, to house this manifold assembly in a suitable location.

8 2812377

  from the house and save the lengths of distribution tubes to the rooms as shown in Figure 2. The manifold assembly 17 is enclosed in a thermally insulated box (not shown). Due to the small number of components, it can be realized

in a compact version.

  This small footprint makes it possible to place it in restricted places, that is to say of small extent in the house, little usable for other needs.

  In detail, the regulated collector bi-

  temperature consists of the following different elements. Two distributor blocks, one upstream 23 and the other downstream 24 hydraulically separated by a circulation pump 25 form with the single supply link 18 a primary charging circuit 26 external to the boiler. This primary circuit 26 comprises a circulator-boiler 27 placed inside the covering of the boiler or at the outlet of the flow 20 of the boiler 1. The external primary circuit 26 is looped on the boiler 1 by the return duct 21 The outlet 19 and return 21 conduits together form the single hydraulic supply link 18 connecting the boiler 1 to

the manifold assembly 17.

  A regulator or regulating module 28 is connected to this external primary circuit 26 connected by a first detection line 29 to a thermal probe 30 of flow temperature inserted in the primary circuit 26. The regulator 28 controls the operation of the circulation pump 25. A safety aquastat 31 is mounted in series downstream of the thermal probe 30. The regulator 28 is also connected by a second detection line 32 to an external probe 33 located in a sheltered location at

9 2812377

  the exterior of the dwelling or building.

  Safety aquastat 31 protects the underfloor heating installation by stopping the

  circulation pump 25 during overheating.

  For safety, there is a first bypass 34 short-circuiting the circulation pump in the event of total closure of all the radiators 3. This bypass 34 shown in broken lines is normally closed. Its opening is controlled for example by the thermostatic valve 8 of one of the radiators. A second short-circuit bypass 35 is provided, bypassing the boiler outlet conduits downstream of the boiler circulator 27. These bypasses relieve the pumps when the various

  operating circuits are closed.

  Each upstream distributor block 23 or downstream distributor 24 is formed of two chambers, one of departure and the other of return, for each of the two circuits of use, for example the heating circuit by radiators

and that of underfloor heating.

  For reasons of descriptive clarity, we will call rooms those of the upstream distributor 23 and

  compartments those of the downstream distributor 24.

  Each chamber or compartment has inlet or outlet openings fitted with connectors for respectively connecting a series of pipes for distributing and recovering hot water for underfloor heating or other use circuits to a first temperature and a series of tubes for distributing and recovering hot water from radiators or other circuits of use at a second temperature according to two temperature ranges

  one low and the other high respectively.

  More specifically, the upstream distributor block 23 includes an outlet manifold 36 formed by a first supply chamber 37 for the radiators 3 in which the water is that arriving from the boiler.

2812377

  preferably at a temperature between 80 C-90 C.

  A series of tubes constitutes the start 38 of the loops

  supply circuits to radiators 3.

  The upstream distributor block 23 also includes a return collector 39 formed by a second chamber called the receiving chamber 40 for the return water from the loops of the underfloor heating circuits by a series of tubes forming the returns 41 of the loops of the

underfloor heating circuits.

  These two supply 37 and reception 40 chambers communicate hydraulically with one another in the direction of water circulation in the primary circuit 26 through an intermediate compartment 42 of passage with variable flow rate and adjustable on command equipped for example with this end of a controlled flow adjustment member, for example a motorized valve 43 controlled by the management system of the heating installation. It may, for example, be a communication device 44 with adjustable flow rate and controllable by the regulator 28 of the drawer and baffle type or with a variable position plug driven in displacement.

  by an external electric motor 45.

  The function of this variable-rate communication 44 consists in bringing into the receiving chamber 40 hot water at high temperature in variable quantity and adjustable according to the needs of the underfloor heating circuit (s) to increase in s' mixing the temperature of the underfloor heating water. This water comes from the adjacent supply chamber 37 of the radiators 3 and the reception chamber 40 also has the function of a mixer. The output of the reception chamber 40 communicates with the circulation pump 25, the operation of which is controlled by the regulator or regulation module 28 as a function of the value of the outside temperature supplied by the outside probe il 2812377 33 and of the temperature of water at its entry into the downstream distributor block 24 informed to

  regulation module 28 by the thermal probe 30.

  The intermediate compartment 42 with variable flow has an additional flow 46 to a particular heating circuit by one or more radiators corresponding to a different flow or to

the return of the boiler.

  The downstream distributor block 24 is also divided into two chambers called compartments. There is a departure compartment 47 of the underfloor heating circuits and a return compartment 48 of the heating circuits by the radiators 3. The latter compartment has a direct outlet to

  the boiler through the return duct 21.

  The starting compartment 47 communicates laterally with the branch of the internal circuit of the manifold assembly 17 downstream of the circulation pump 25. In the basic version, the two compartments 47 and 48 are hydraulically isolated by a transverse partition wall 49 having a hydraulic communication passage 50 represented by an interruption crossed by an arrow in FIG. 3. The compartments 47 and 48 have lateral outlets or inlets each equipped with a connector for connecting the ends of the loops of the heating circuits by radiators 3 or by the floor in each of the rooms thus equipped. It is for the starting compartment 47 a series 51 of tubes forming the births of the loops of the underfloor heating circuits. For return compartment 48, these are 52 loops

  heating circuit by radiators 3.

  In a variant shown in FIG. 4, the passage 50 for hydraulic communication through the partition wall 49 between the two compartments

12 2812377

  47 and 48 is closed by a non-return element, for example a non-return valve 53 mounted passing in the direction of the outlet compartment 47 towards the return compartment 48. This non-return valve 53 makes it possible to avoid the passage of water from the return compartment 48 to the departure compartment 47 in the case of a boiler circulator 27 more powerful than the pump

traffic 25.

  We will now explain the overall operation of the heating installation comprising

  bi-regulated manifold supply assembly

  temperature. The single boiler 1 generally located in an outbuilding or the basement of the dwelling, delivers hot water at a temperature

  high for example 90 C at the manifold assembly 17.

  This water is brought for example under low pressure thanks to the circulator-boiler 27 and by the single hydraulic connection 18 to the manifold assembly 17. The upstream distributor block 23 receives this water through its first chamber 37 from which it leaves towards the radiators 3 through multiple distribution conduits. The radiators 3 each equipped with a thermostatic valve 8 receive this hot water with variable flow rate dosed by the thermostatic valves 8 according to the needs of the moment, that is to say the instantaneous temperature of the room. The hot water having passed through each radiator 3 is directed by the corresponding loop of return of the heating circuit by radiators 3 towards the

  return compartment 48 of the downstream distributor block 24.

  Under the effect of the circulator-boiler 27, it circulates in the heating circuit and then returns to the

  boiler 1 to be heated there.

  A certain quantity of water at high temperature and at variable flow rate passes through the upstream distributor block 23 through the passage of the intermediate compartment 42 to mix in the chamber.

13 2812377

  40 with the return water from the loops of the underfloor heating circuit for its

  reinjection into the underfloor heating circuit.

  This water is forced under low pressure by the circulation pump 25 to the starting compartment 47 of the downstream distributor block 24 in order to supply the circuit.

underfloor heating.

  The excess water, that is to say the amount of water which has been used by mixing in the receiving chamber 40 to raise the temperature of the water returning from the underfloor heating circuit before its reinjection in the circuit is transferred through the hydraulic passage 50 to the return compartment 48

  serving as a return manifold for the radiators.

  The temperature regulation in the heating circuits can be done according to

  different laws implemented by the regulator 28.

  This permanently knows the outside temperature taken in a sheltered place outside the house or building as well as the temperature of the water leaving the boiler which is conventionally controlled by a boiler flow sensor lined with an aquastat. of security. The temperature of the water supplying the downstream distributor block 24 is also known by the flow temperature sensor.

  and then that of the underfloor heating circuit.

  It is this circuit whose water temperature is to be regulated. Depending on the outside temperature and a reference temperature corresponding to this outside temperature, the motorized valve 43 is controlled to inject more or less water at high temperature into the second chamber, that is to say the reception 40 of the block

upstream distributor 23.

  Of course, conventionally we will regulate

  the temperature of the water leaving the boiler,

  tell the level of the high water temperature of

14 2812377

  tell the level of the high temperature of the heating water by the radiators and this according to the

outside temperature.

  For this purpose, depending on the outside temperature, the burner or the boiler ramp will be controlled so that a predetermined level of high water temperature is maintained according to the current outside temperature or its average over a

certain duration.

  The invention has been described in connection with a heating application comprising two different modes, one by radiators and the other by the floor structure. However, it is not limited to these only applications and many others are possible in all areas where the heat provided by hot water at two temperature levels can be used, namely for example cooking, reheating and keeping temperature of dishes,

laundry, hydrotherapy ...

  In addition, the invention is in no way limited to two distributor blocks. On the contrary, the number of distribution blocks can vary as well as that of the circuits of use and therefore the number of

  different temperatures of use.

2812377

Claims (8)

  1. Supply assembly comprising the production, supply and distribution of heat or cold to at least two circuits of use at different temperatures of use including at least a first temperature and a second temperature, comprising a generator ( 1) of calories or frigories carrying a fluid at a base temperature, a distribution interface and a supply link between the generator (1) and the interface characterized in that the supply link (18) existing between the generator (1) of fluid at base temperature and the interface is unique for all the circuits of use and in that the interface consists of a manifold assembly (17) formed by at least two distributor blocks one upstream (23) and the other downstream (24) mounted in series in a primary circuit (26) for charging the generator (1) of the fluid brought to a base temperature and separated by a circulation pump (25) , the entrance to the block upstream distributor (23) receiving the fluid coming from the forward branch of the primary circuit (26) of the generator (1) and the outlet of the downstream distributor block (24) being connected to the return branch of the primary circuit (26) of the generator (1 ) of the fluid and in that the upstream distributor block (23) comprises first and second respectively supply chambers (37) of a second circuit and a reception chamber (40) of a first circuit communicating with each other in the direction of circulation of the fluid in the primary circuit (26) through an adjustable flow communication (44) allowing variable flow injection of fluid at the second temperature into the receiving chamber (40) of the upstream distribution block ( 23), the outlet of this upstream distributor block (23) being connected to the 16 2812377   circulation (25) and the first chamber (37) opening onto the supply conduits of the second fluid use circuit at the second temperature and the second chamber (40) receiving the return conduits of the first fluid use circuit at the first operating temperature and in that the downstream distributor block (24) comprises a departure compartment (47) and a return compartment (48) communicating hydraulically with each other and connected for the first compartment to the return conduits of the second circuit for using the fluid at the second operating temperature and for the second compartment to the outlets of the first circuit for using the fluid at the first temperature use.   2. Assembly according to claim 1 characterized in that the first temperature is higher   lower than the second temperature.   3. Assembly according to claim 1 characterized in that the first temperature is higher   higher than the second temperature.   4. Assembly according to any one of   previous claims characterized in that the   communication (44) with adjustable flow is an intermediate compartment (42) equipped with a device (43) for controlling the flow controlled by a regulation management. 5. Assembly according to the preceding claim characterized in that the device (43) is motorized.   6. An assembly according to claim 1 characterized in that the start (47) and return (48) compartments of the downstream distribution block (24) are separated by a transverse wall (49) having a   hydraulic communication passage (50).   7. Collector assembly according to the preceding claim characterized in that the 17 2812377   hydraulic communication passage (50) between the flow (47) and return (48) compartments of the   downstream distribution (24) is equipped with an anti-   return (53) mounted passing from the outlet compartment (47) to the return compartment (48). 8. Collector assembly according to claim 1 characterized in that between the circulation pump (25) and the downstream distributor unit (24) is mounted a flow temperature thermal probe (30) connected to a regulator (28) itself connected to an external sensor (33) to control the pump circulation (25).