BE1022927A1 - SATELLITE FOR CENTRALIST HEATING OR FOR TELEHEATING WITH PREDISPOSITION WITH SEVERAL FUNCTIONS - Google Patents

Abstract

A hydraulic satellite (1) for centralized heating or for a heat network has a housing structure (2) comprising, in its internal part, pipes (16, 17, 18) which connect functional elements (10, 12, 13). of the group (1), said pipes being connected to a connection (21) for a heat transfer fluid inlet duct coming from a production installation or generation of such a fluid, remotely and a connection (20) for a conduit for returning water to the same installation, as well as connections (22-25) for connecting the satellite to pipes of a heating circuit of an environment where the same satellite is mounted and to pipes a sanitary water production network of the same environment. In said structure (2) there is a body (30) connected to said pipes (17,

18) and said connections (20, 21) of the heat transfer fluid inlet and outlet conduits to and from the remote installation, said body (30) having a seat (31) adapted to contain a member (32) regulator Fig. 2 differential pressure when provided, said member (32) being connectable by means of an external pipe (37) to a first of said (20) connectors for the inlet and outlet conduits of the coolant, said seat (31) being in direct connection with the other (21) of said connector connectors (20, 21) for the inlet and outlet conduits, said seat (31) being closed when it does not contain the regulating member (32). ) and being in this case disconnected from the first connector (20).

Description

SATELLITE FOR CENTRALIZED HEATING OR FOR TELEHEATING WITH PREDISPOSITION WITH SEVERAL FUNCTIONS

The present invention relates to a satellite group for centralized heating or for a heat network according to the introductory part of the main claim. Innovation, in particular, refers to a hydraulic satellite group for systems for the production of hot water, for environment heating installations or for the production of sanitary water in which the production of heat transfer fluid takes place far from the heated environment or in which hot water is used. Such systems, such as the one known as "heat network", provide for the production of heat transfer fluid to be carried out remotely using the most disparate techniques such as heat recovery from waste treatment facilities, by means of true water heating in off-center tanks versus environments in which the same hot water is used, or similar environments.

Hydraulic satellites are known which allow the use of such hot water produced remotely to warm environments or for sanitary use. In general, these devices or systems comprise a structure containing functional elements capable of allowing a stream of sanitary water between an exchanger to which arrives and in which circulates also the heat transfer fluid (product remote). This regulator includes internal valves adapted to regulate the flow of heat transfer fluid so as to control and regulate the temperature of the sanitary water and use it in the environment.

Known hydraulic installations of the above-mentioned type comprise various components, such as flow regulators and valves actuated electrically or in any case actuated by external organs (such as a thermostat) electrically controlled. Such installations or satellites are made by inserting, in a structure forming a housing, pipes which make it possible to receive the heat-transfer fluid at a distance and send it back to the installation which produces this same coolant, a pump, one or more valves of safety and the necessary components of control of water supply to radiators or faucets of the aforementioned environment. These components are assembled in the housing structure as required, which includes an extension of the mounting times in the environment where the structure is to be used.

The known solutions are moreover and in any case complex and have a high cost.

The purpose of this innovation is to provide a satellite group that is sophisticated with respect to known solutions and is readily available for installation in an environment.

Another object is to provide a satellite group which can possibly receive, in fast times, a differential pressure regulating member when necessary.

Yet another object is to provide a satellite group of the aforementioned type that can receive said regulator without the need to "rebuild" the hydraulic system present in the satellite body.

Yet another goal is to provide a satellite group that is reliable in use and provides high security in each of its modes of use.

These and other objects which will be apparent to those skilled in the art are achieved by a satellite group according to the attached claims.

For a better understanding of the present innovation, the following drawings are attached for information only, but not restrictively, in which: FIG. 1 is a front view of a satellite group obtained according to the innovation with certain parts omitted for a better clarity ; Figure 2 shows a perspective view of the satellite group of Figure 1; Figure 3 shows a longitudinal section of a component of the satellite group of Figure 1; Figure 4 shows a perspective view partially in section of the component of Figure 3; and FIG. 5 shows a section of a valve mounted in the satellite group of FIG.

With reference to the cited figures, a hydraulic (for example, a "satellite") satellite group for central heating or for a heat network is indicated generally at 1, and in FIGS. 1 and 2 is devoid of at least one panel in order to have visual access to its internal components. This satellite group or simply satellite 1 comprises a housing structure 2 having side walls 3 (upper in the figures), 4 (right side in the figures), 5 (lower) and 6 (left side in the figures) and a plane or posterior closure panel 7. These walls 3-6 and panel 7 (and the front panel, not shown) delimit an internal space 9 of the satellite 1 in which are placed functional elements such as a pump 10 provided with a terminal block which it is clean, regulating valves 12 and 13 and a conventional thermostatic switch 14, all connected by appropriate pipes (generally indicated by 16). Among the latter, an inlet or a return pipe 18 is especially identified, and an outlet or return pipe 17: the pipe 18 is connected to a first (threaded) connection 21 that is used to connect the satellite 1 to an inlet pipe or to go (Not shown) heat transfer fluid from a production facility of such a distant fluid (and, that is, "remote") of the satellite 1 and not shown. On the other hand, the pipe 17 is connected to a second usual connection 20 for joining to the satellite an outlet duct or return duct (not shown) of the return fluid to the aforementioned remote installation.

These first and second connectors 21 and 20 are, in the example of the figures, associated with the wall 3 of the structure 2. Other connections 22, 23, 24 and 25 are associated, in the example of the figures, with the wall 5 of the structure 2 and connect the latter to pipes (not shown) which distribute the fluid input, depending on the requirements, to a heating system and another sanitary water (not shown) of a environment (having one or more spaces) in which the satellite 1 is inserted.

The functional elements mentioned above are usually present in a satellite of a type similar to that of the present invention. These elements are controlled by a control unit not shown which controls the operation according to the needs or the request from the users, with modalities known in themselves.

As we know, satellites used for central heating or for a heat network are required to operate under extremely variable conditions. For example, the same satellite can be used in an installation with less than six users and with a total head of circulation pumps of less than six meters (60kPa) or in extended heat networks, in which the total head of the pumps may exceed 10 bar (1 MPa).

So in order to have an optimal use of such a satellite, especially in the case of use in an installation with a total head of up to six bar, it is useful to insert in it a regulator differential pressure. The satellite according to the innovation is predisposed to receive such a regulator or to operate without it, as needed. For this purpose, the satellite 1 comprises, in the space 9 (preferably, but not necessarily), a body 30 connected, by means of openings 30A and 30B, to the pipes 18 and 17 and therefore to the first and second connectors inlet 21 and outlet 20 and having a seat 31 adapted to receive a conventional pressure regulator 32 having a membrane member 33 which is clean and which is movable spring contrast and a filter of its own. The seat 31, in the embodiment of the figures, is connected with the inlet pipe 18 and the pressure regulator 32 operates on the fluid which passes through the second inlet connection 21. In particular, this fluid in entering the body 30, moves according to the arrow W of FIG.

The pressure regulator 32 is connected, through ducts 37 having a reduced section to a channel 38 connected to the opening 30A connected to the return line 17, downstream thereof. Through this pipe 37, the pressure of the return of the fluid (at the outlet of the connection 20) is "reported" on the diaphragm 33 of the pressure regulator 32, whereas the pressure of the fluid present in the inlet pipe 18 is "postponed On the lower surface 33A of the membrane 33 through an internal conduit 40 of the body 30 in which a shutter 41 of the regulator 32 moves. As a function of the flow rate of the heat transfer fluid from the satellite, the position of the shutter is adjusted to maintain, downstream of the body 30, more precisely between the pipes 17 and 18, the differential pressure constant to a fixed value.

The pressure regulator 32 comprises a body 44 having a portion 45 adapted to be housed or mounted, through an opening 46, in the seat 31 where it is blocked by means of fixing means, for example locking springs 47, which surround portion 45, and that can be easily unlocked. It is possible to place the filter around this portion 45. Thus, in the mounting phase of the satellite 1, in the case where the presence of the regulator 32 is not required, the body 30 will have plugs at the opening 46 of the seat 31 and the channel 38, while in addition to the regulator 32, it will not present the line 37 either. In the case where this regulator is required or must be inserted in the satellite 1 even after its installation (and during its use), the aforementioned plugs are removed and said pipe and the regulator 32 are associated with the body 30. All in a fast way and simple for the technician who makes the modification of the satellite.

According to yet another preferred embodiment, the satellite 1 comprises a safety interception valve 49 (because it intercepts the fluid if necessary and therefore has a safety function), known per se, but inserted in position predefined in the satellite 1. If necessary, a connection 50 is provided at the output of a control valve 12, while a pipe 51 is provided at the outlet of the pipe 18. If this is necessary it is possible to mount , on these same lines, the valve 49 (membrane 52) of the type having connections 53, 54 placed at 90 ° angle between them.

The valve 49 is a solenoid solenoid valve 56 and integrates perfectly with the hydraulic unit of the regulating valve 12. The valve has ON / OFF operation and is activated by the control unit of the satellite with a PWM control (Pulse with modulation): this control makes it possible to drastically reduce the power dissipated in the solenoid, in a fraction of a second from the beginning of the command to open the valve.

In the absence of a network, the above-mentioned unit can no longer control the flow and temperature of the installation which could reach very high values, capable of damaging the installation or posing a threat to safety, presence of the valve (normally closed type) automatically ensures the closing of the heat transfer fluid inlet port.

In addition, in the event of failure of the electronic control unit or of a temperature probe, an additional thermostatic sensor (mechanical type) redundant and not shown, interrupts the circuit of the solenoid 56 and the valve by closing the flow coolant. This function is particularly useful (and necessary) when heated by panels (or on the floor), whereas it is not used in installations with radiators on the walls.

The valve is servo-assisted: the solenoid 56A of the solenoid valve opens a very small lumen 57 which allows the fluid to deflect from a chamber 58 placed on the side of the fluid inlet connection 54 to a connecting chamber with the connection 53 and, acting on the diaphragm 52, to open the valve. Normally, when the solenoid is not energized, the valve is kept closed by a weak spring (not shown) acting on the diaphragm and by the fluid pressure on the "closing" side of the diaphragm, which comes into contact with the diaphragm. side from a small hole 60 (or calibrated hole) practiced in the center of the membrane.

To prevent impurities in the fluid from clogging this small hole, a small stainless metal grid filter 61 is provided in the center of a shutter 62 of the valve 49.

In this case too, like the pressure regulator 32, the valve 49 may or may not be provided. In its absence the tube 51 connects directly with the valve 12.

In a variant, the first and second connectors 21 and 20 are defined by the openings 30A and 30B of the body 30.

The satellite 1 made according to the innovation can thus be, according to the use that one wants to make of it, completed with components easy to insert. All with fast operations for the installer.

Claims (12)

1. Hydraulic satellite (1) for central heating or heat network having a housing structure (2) comprising, in its interior, pipes (16, 17, 18) which connect functional elements (10, 12, 13) of group (1), said pipes being connected to a first connection (21) for a heat transfer fluid inlet duct coming from a production facility o remote generation of this same fluid and a second connection (20) for a duct return fluid to the same installation, as well as connections (22-25) for connecting the satellite to pipes of a heating circuit of an environment where the same satellite is mounted and pipes of a sanitary water production network of the same environment, characterized in that within said structure (2) a body (30) is present, connected to said pipes (17, 18) and said connectors (20, 21 ) entrance ducts e and outlet of the heat transfer fluid to and from the remote installation, said body (30) having a seat (31) adapted to contain a differential pressure regulating member (32) when this is provided, said member (32) being able to being connected by means of an external pipe (37) to a second (20) of said connections for the water inlet and outlet ducts, said seat (31) being in direct connection with the first (21) of said connectors (21, 20) for the inlet and outlet ducts, said seat (31) being closed when it does not contain said regulating member (32) and being in this case disconnected from the second connection (20). Hydraulic satellite according to claim 1, characterized in that said seat (31) is in fluid connection with the first connector (21) through an opening (30B) of said body (30) and receives the inlet fluid, the body (30) being connected to the second connector (20) and receiving a return pipe (17) the coolant directed to the remote installation internal to the structure (2) above. 3. hydraulic satellite according to claim 1, characterized in that said body (30) has an opening (46) adapted to allow insertion into the same body (30) of the differential pressure regulating member (32), a waterproof cap adapted to close said opening (46) being provided in the absence of the member (32) mentioned above in the seat (31) of said body. 4. Hydraulic satellite according to claim 1, characterized by the fact of providing fastening means which can be unlocked (47) adapted to cooperate with the differential pressure regulating member (32) when it is inserted into the seat ( 31) of the aforementioned body (30). 5. hydraulic satellite according to claim 4, characterized in that said fixing means which can be unlocked are at least one elastic element (47) applied to a portion (45) of a body (44) of the regulating member of differential pressure (32) inserted in the aforementioned seat (31). 6. Hydraulic satellite according to claim 1, characterized in that the external pipe (37) is connected to the second connection (20) through a channel (38) provided in said body (30) and connected to an opening (30A) of the latter connected to the second connector (20), a sealing plug adapted to close the channel (38) being provided when the external pipe (37) is separated from the aforementioned body (30) in the absence of the differential pressure regulating member (32). ). 7. hydraulic satellite according to claim 1, characterized in that said first and second connector (20, 21) are part of the body (30) adapted to contain the differential pressure regulating member. 8. Hydraulic satellite according to claim 1, characterized in that it comprises a safety interception valve (49). 9. hydraulic satellite according to claim 8, characterized in that the safety interception valve (49) is connected to a regulating valve (12) internal to the housing structure (2) of the same group and to the pipe water inlet (18) internal to the latter. 10. Hydraulic satellite according to claim 8, characterized in that the safety interception valve (54) is a valve with solenoid (56A) normally closed. 11. Hydraulic satellite according to claim 8, characterized in that it comprises a membrane element (52), pushed by a spring, said element comprising a calibrated hole (60) formed in a central portion of the same element. 12. hydraulic satellite according to claim 1, characterized in that a filter (61) is provided for the protection of the same calibrated hole (60), associated with a shutter (62) of the valve (49).