A high-efficiency radiant panel system for the thermoregulation of a room

Abstract: A system for the thermoregulation of a room, including radiant panels, wherein said radiant panels are built up from thin rectangular cross-section channel elements which are assembled side-by-side, by inserting them by extremities thereof into slits made in two manifolds for feeding them with thermovector liquid. The manifolds have ports that open into said slits. The channel elements are forced into the slits trhough gaskets. The system is endowed with a thermostat including a case and a cylindrical thermosensitive element arranged outside it, on it.

Description: Field of the Invention This invention relates to the field of the thermoregulation of a room with radiant panels. Background of the Invention It is known that the comfort of man in a room derives to a large measure from heat transferred by radiation. Therefore, systems for the conditioning of a room have been developed aiming at thermal radiation, instead of at thermal convection. Through thermal radiation it is possible to carry out both the heating and the cooling of a room. Such a system is known from FR-2349811. In the aforesaid systems the function of transferring heat to a room is performed by panel structures, that is radiant panels, especially wall radiant panels. An efficiency is associated with such radiant panels. The higher the portion of heat which a radiant panel can transfer to a room by radiation, instead of by convection, and the quicker the response of the radiant panel to the activation of a thermovector liquid source that feeds it, the higher is the efficiency of the radiant panel. Objects, Features and Advantages of the Invention It is the general object of this invention to provide a system for the conditioning of a room with radiant panels, which turns out to be substantially more efficient and functional with respect to those of the state-of-the-art. It is a particular object of this invention to provide a thermovector liquid radiant panel which is of an efficiency higher than those known at present, i.e. which is affected by a lesser withdrawal of the heat transferred by it to a room, due to the convective motions of air; which needs a lesser heating or cooling to bring a room to a given temperature, and which has a faster response to the switching-on of the energy source that transfers heat to the thermovector fluid. It is also an object of this invention to provide a radiant panel having a strong and elastic construction, and which is not noisy, especially in thermal transient conditions. It is also a particular object of this invention to provide a radiant panel which can be inserted in an interior of a room without determinating an additional encumbrance. It is still a particular object of this invention to provide means for the mounting of the radiant panels onto a wall, in which means vibration is not excited during the operation of the system. Therefore, it is the subject of this invention a system for the thermoregulation of a room, including a source for feeding a thermovector liquid; radiant panels wherein said thermovector liquid passes; pipings for delivering/returning thermovector liquid to/from said radiant panels; each radiant panel including a first manifold; a second manifold, and, between the first manifold and the second manifold, a radiant element which has radiating front surfaces; an interior, and, in such interior, parallel contiguous rectilinear channels having a rectangular cross-section and entirely sweeping said radiating front surfaces with respective radiating sides, from the first to the second manifold; said channels being each one in liquid communication with said manifolds through respective ports provided in the manifolds; said manifolds having respective eccentric profiles endowed with respective slits, wherein said ports open, and said radiant element being built by inserting discrete channel elements, each one confining in an interior thereof one of said parallel contiguous rectilinear channels having a rectangular cross-section, into said slits by opposite extremities thereof, the channel elements being forced into the slits through gasket means and being arranged in a side-by-side relationship; and said channels having the lesser side of the rectangular cross-section thereof in the direction of said width of the radiant element. The constitution with rectangular cross-section channels that entirely sweep the radiant surface of a panel gives the advantage of allowing the reaching of a very high efficiency. In fact, the so realized guiding of the thermovector liquid flow as a blade flow reduces turbulence in the thermovector liquid flow and increases heat exchange therewith. The constitution with discrete channel elements, forced through gaskets, without solderings, allows each channel to undergo its own thermal expansion/contraction independently of the other ones, with the advantage that the radiant panels do not undergo deformations, especially in transient conditions. This also eliminates noise in the operation of the radiant panels. It is envisaged that the radiant panels are endowed with frame means fit for receiving a radiant panel in an interior thereof; the frame means and the radiant panels being endowed with respective complementary lock means and with hinge means for hinging a radiant panel on the frame means, the hinge means including hinged hydraulic fittings, and the frame means being endowed with hydraulic fitting means for a connection to a thermovector liquid feed circuit. In this way, a radiant panel can also operate as a door, without determinating an additional encumbrance in a room, arranged in a door space. Moreover, a so arranged panel can thermoregulate two rooms seen from the same door. It is also envisaged that the system for the thermoregulation of a room further includes thermostat means to control the switching ON/OFF of said source, which thermostat means include a case and a cylindrical thermosensitive element arranged outside said case, upon it, the axis of symmetry of the thermosensitive element being intended to be arranged in a vertical position in a mounting position of the thermostat means. It is further envisaged that the system for the thermoregulation of a room further includes a radio transmitter and a counter for counting the times of activation of the source; and a radio receiver, and a warning light arranged on a radiant panel; the radio transmitter signalling the ON/OFF state of the source to the radio receiver and correspondingly determining the ON/OFF state of said warning light. This feature allows one to intervene on disorders of the system - which reduce the efficiency of the same - at once, when not a regular course of the switched-on state of the same is detected. It is further envisaged that the system for the thermoregulation of a room further includes a tank for a liquid against carbonaceous deposits, which tank is connected as a shunt to said return piping, through two check-valves, a gate valve being mounted on the branch of return piping on which the shunt insists, to stop/reenable the flow of thermovector liquid. By this feature the efficiency of the system is again increased, because carbonaceous deposits and corrosion of the source are a critical efficiency reducing agent. It is further envisaged that in the system for the thermoregulation of a room, said radiant panels are connected to said delivery and return pipings through gasketed quick fittings. By virtue of such feature the fittings are such that losses of thermovector liquid are prevented. It is envisaged that said radiant panels are equipped with lower and upper header-coverings, having such a length as to project beyond the sides of a radiant panel when mounted on it; which header-coverings are endowed with respective upper and lower legs, and are equipped with templates that include a L-profile having a wing to be hooked to a wall and a support wing that has continuous parallel ridges fit for supportingly engaging said upper legs, and equipped with blocklets to be mounted between said support wing and said lower leg, receiving this one in a groove provided in the blocklets themselves. According to a particularly preferred embodiment, the channel elements are made up of polycarbonate. Detailed Disclosure of the Invention This invention will be fully understood based on the following detailed disclosure of embodiments thereof, only given as a matter of example, absolutely not of restriction, of the teachings thereof, with reference to the annexed drawings, wherein: FIGURE 1 is a front view of the inside of an inventive radiant panel; FIGURE 2 is an overall front view, partially exploded, of an inventive radiant panel; FIGURES 3A, 3B and 3C show an equipment for making an inventive radiant panel fit for its use as a door; FIGURE 4 schematically shows a thermostat according to this invention; FIGURES 5A and 5B schematically show a monitor apparatus according to this invention; FIGURE 6 shows a system for adding a liquid against carbonaceous deposits according to this invention; FIGURE 7A and 7B respectively show a quick insertion fitting and the connection of a radiant panel to the delivery/return pipings through quick insertion fittings according to this invention; FIGURE 8 schematically shows in cross-section view, a header-covering for radiant panels in a condition hooked onto a wall according to this invention, and FIGURE 9 shows an angled assembly of two radiant panels according to this invention. As can be remarked referring to FIGURE 1, an inventive radiant panel includes a first manifold 18 and a second manifold 19, intended to arrange themselves in an upper position and in a lower position respectively; and rectilinear channels 17 1 to 17 9 that develop themselves from the first, upper manifold to the second, lower manifold, intended to arrange themselves vertically. The channels are arranged side by side, have a rectangular cross-section, preferably thin in the direction of the width of the radiant panel, and entirely sweep from inside the radiant panel front, radiant walls arranged between the two manifolds. The manifolds are in liquid communication with the channels, to feed them with thermovector liquid, through respective ports 20 1 to 20 9 and 21 1 to 21 9 , that open themselves along the development of the manifolds. The sum of the volumes of the ports of each manifold is less than the volume of each manifold. Referring to FIGURE 2, it can be seen that manifold bodies 180a, 190a outerly have eccentric profiles 180b, 190b, eccentric meaning eccentric with respect to the flow pipes they respectively confine in their interior. Eccentric profiles have respective slits 180c, 190c whereinto the aforesaid ports open. Radiant element 100 is made up by mounting discrete channels elements, such as box elements, 100 1 to 100 6 with their extremities into said slits, in a side-by side relationship. The channel elements are forced into the slits through gaskets 180d, 190d. So the assembling of the channel elements turns out to be free of solderings. Preferably the channel elements are made up of polycarbonate. With reference to FIGURES 3A, 3B and 3C an embodiment is shown of the radiant panel fit for performing a further, door function. Panel P is endowed with a frame 100a on its periphery. As depicted in FIGURE 3A, the frame can confine the manifolds in its interior. The so framed panel is also equipped with a wall frame T, as can be seen in FIGURE 3B fit for receiving it in an interior thereof. In frame 100a and in wall frame T complementary portions are assembled of a lock including a handle M. The framed panel and wall frame T are endowed with complementary hinges H for hinging the panel onto wall frame T. The hinges are made up of hinge hydraulic fittings 101, 102, as can be seen in FIGURE 3C. They include two pipe fittings 200 1 and 200 2 respectively endowed with a pivot 200 1 ' and with a seat 200 2 ' fit for pivotly receiving the pivot. A pipe fitting is intended to a direct connection with a manifold 18 or 19, the other one to the connection to a thermovector liquid intake 210 or 211, and to this end the fittings can be threaded. The pivot and the seat have through-holes inside them to determinate a liquid communication L between the fittings. The pivot and the seat can include check valves that open themselves upon inserting the pivot into the seat and close themselves upon uninserting the pivot from the seat. Wall frame T is endowed with thermovector liquid intakes 210, 211, each one connected to a respective thermovector liquid piping. As is illustrated in FIGURE 4, the inventive thermostat includes a case 1 and a cylindrical thermosensitive element 2 arranged outside it, onto it. The thermosensitive element is intended to arrange itself with its symmetry axis in a vertical position, so as to cut room thermal radiation normally to the lateral surface thereof, so as to realize the best perception of radiant heat, and to minimize its exposure to room air convective motions. As illustrated in FIGURES 5A and 5B, the equipment for monitoring the activation times of source 3 includes a radio transmitter 5 for transmitting a source ON/OFF state signal and a radio receiver 5' connected to a warning light 6' arranged on a radiant panel 6. Such a warning light can be a light emitting diode or LED. The monitor equipment also includes a counter 4 for counting the source activation times. Transmitter 5 and counter 4 are activated by a relais connected to the source. Referring to FIGURE 6, the system for adding the liquid against carbonaceous deposits include a screw tank 7 shunted to a return (to the source) piping 8 trough "T" pipe fittings 10, 10' at the two ends of the shunt connection. Respective check valves 9, 9' are inserted on the two branches of the shunt connection. A gate valve 11 is inserted on the piping branch whereupon the shunt connection insists. Once screw tank 7 has been filled with liquid against carbonaceous deposits, check valves 9, 9' are opened and gate valve 11 is closed. Subsequently gate valve 11 is opened again and check valves 9, 9' are closed again. As illustrated in FIGURE 7A, a quick pipe fitting 12, known in the art, including a threaded head pipe fitting 13', according to this invention is endowed with gasket means 13 on an outer thereof with a check ring 14 to prevent thermovector liquid leakages. As illustrated in FIGURE 7B, the connection of a radiant panel 6 to the piping of the thermoregulation system takes place with two pairs of pipe quick fittings. Pipe quick fittings 12', 12" are respectively connected to a head and a bottom manifold of radiant panel 6, and through respective flexible hoses 14 1 , 14 2 they are connected to other pipe quick fittings 12' 1 , 12" 1 respectively connected into delivery/return pipings of the thermovector liquid feed circuit of the thermoregulation system. FIGURE 8 shows a header-covering 16 for A radiant panels 6. It includes a sheath which is continuous in a longitudinal direction with a slot 16 1 for tightly receiving a radiant panel header, laterally overcoming the latter. The sheath, on a side thereof intended to be turned to a wall 17, includes a pair of legs, i.e. an upper leg 18 and a lower leg 18' projecting from such sheath. The legs are intended to be hooked to a complementary template for mounting the radiant panel onto wall 17. The template includes a L-profile with a wing 17' to be attached to the wall and another wing endowed with a plurality 17" of parallel continuous ridges turned upside. The radiant panel is mounted by putting upper leg 18 in a groove defined between the ridges, the panel is then supported by the internal abutting of the leg onto the top of an outer ridge 17"', i.e. the last ridge of plurality 17" in the direction away from the wall. A blocklet 19 having a groove 19' is an element for stabilizing the assembly of the panel. Lower leg 18' is received in groove 19' of blocklet 19. Respective header-coverings with relevant templates equip the upper and the lower header of a radiant panel. The header-coverings, laterally projecting beyond the radiant panels, can protect the pipe fittings. In FIGURE 9 the connection is depicted of two radiant panels 6, 26 in an angled configuration. Upper and lower header-coverings 16, 36; 16', 36' have angled cuts at their junctions, so allowing a continuity of the covering. The space between the header-coverings not occupied by the radiant panels is filled with filling staves 106. This invention has been disclosed referring to specific embodiments thereof, but it is to be expressely understood that additions, variations and omissions can be made without departing from its protection scope, as defined by the appended claims.

Claims: A system for the thermoregulation of a room, including a source for feeding a thermovector liquid; radiant panels wherein said thermovector liquid passes; pipings for delivering/returning thermovector liquid to/from said radiant panels; each radiant panel including a first manifold (18); a second manifold (19), and, between the first manifold and the second manifold, a radiant element (100) which has two radiating front surfaces and a width from the one to the other radiating surface; an interior, and, in such interior, parallel contiguous rectilinear channels (17 1 , ..., 17 9 ) having a rectangular cross-section and entirely sweeping said radiating front surfaces with respective radiating sides, from the first to the second manifold; said channels being each one in liquid communication with said manifolds through respective ports (20 1 , ..., 20 9 ; 21 1 , ..., 21 9 ) provided in the manifolds; wherein said manifolds have respective eccentric profiles (180b, 190b) endowed with respective slits (180c, 190c), wherein said ports open, and said radiant element (100) is built by inserting discrete channel elements (100 1 ,...,100 6 ), each one confining in an interior thereof one of said parallel contiguous rectilinear channels having a rectangular cross-section, into said slits by opposite extremities thereof, the channel elements being forced into the slits through gasket means (180d, 190d) and being arranged in a side-by-side relationship; and wherein said channels have the lesser side of the rectangular cross-section thereof in the direction of said width of said radiant element. The system for the thermoregulation of a room according to Claim 1, wherein the panels are endowed with frame means (T) fit for receiving a radiant panel in an interior thereof; the frame means and the radiant panels being endowed with respective complementary lock means (M) and with hinge means (H) for hinging a radiant panel on the frame means, the hinge means including hinged hydraulic fittings (200 1 , 200 1 '; 200 2 , 200 2 '), and the frame means being endowed with hydraulic fitting means (210, 211) for a connection to a thermovector liquid feed circuit. The system for the thermoregulation of a room according to Claim 1 or 2, further including thermostat means to control the switching ON/OFF of said source, which thermostat means include a case (1) and a cylindrical thermosensitive element (2) arranged outside said case, upon it, the axis of symmetry of the thermosensitive element being intended to be arranged in a vertical position in a mounting position of the thermostat means. The system for the thermoregulation of a room according to anyone of the preceding claims, further including a radio transmitter (5) and a counter (4) for counting the times of activation of said source (3); and a radio receiver (5'), and a warning light (6') arranged on a radiant panel (6); the radio transmitter signalling the ON/OFF state of the source to the radio receiver and correspondingly determining the ON/OFF state of said warning light. The system for the thermoregulation of a room according to anyone of the preceding claims, further including a tank (7) for a liquid against carbonaceous deposits, which tank (7) is connected as a shunt to said return piping (8), through two check-valves (9, 9'), a gate valve (11) being mounted on the branch of return piping (8') on which the shunt insists, to stop/reenable the flow of thermovector liquid. The system according to anyone of the preceding claims, wherein said radiant panels are connected (14 1 , 14 2 ) to said delivery and return pipings through gasketed quick fittings (12',12' 1 ;12",12" 1 ). The system according to anyone of the preceding claims, wherein said radiant panels are equipped with lower and upper header-coverings, having such a length as to project beyond the sides of a radiant panel when mounted on it; which header-coverings are endowed with respective upper (18) and lower (18') legs, and are equipped with templates that include a L-profile having a wing (17') to be hooked to a wall (17) and a support wing that has continuous parallel ridges (17'';17''') fit for supportingly engaging said upper legs, and equipped with blocklets (19) to be mounted between said support wing and said lower leg, receiving this one in a groove (19') provided in the blocklets (19) themselves. The system for the thermoregulation of a room according to anyone of the preceding claims, wherein said channel elements (100 1 ,...,100 6 ) are made up of polycarbonate.

Inventors: BONURA GIUSEPPE, BONURA MARCO, BONURA VANESSA, DI FRANCO FRANCESCA, BONURA, GIUSEPPE, BONURA, MARCO, BONURA, VANESSA, DI FRANCO, FRANCESCA
Applicants: BONURA GIUSEPPE, BONURA MARCO, BONURA VANESSA, DI FRANCO FRANCESCA, BONURA, GIUSEPPE, BONURA, MARCO, BONURA, VANESSA, DI FRANCO, FRANCESCA
Application year: 2001
Main classification: F24F5
IPC codes: F28F9, F24D13, F24D3, F28D1, A01H5, F28F1, F24F5