Hydronic terminal for air treatment systems

Description

DESCRIPTION Attached to a patent application for an INDUSTRIAL INVENTION having by title “Hydronic terminal for air handling systems” On behalf of: EP SpA COMMERCE STREET, 1 25039 TRAVAGLIATO BS ******* The present invention relates to a hydronic terminal for systems of air treatment. In other words, the present invention falls within the field of devices air treatment for the air conditioning of closed environments. 5 Among the air handling units, the split or multi-split systems are known, that is air conditioning systems consisting of an external unit and one or more internal units. In particular, the internal unit allows you to control the temperature of the closed environment through heat exchanges between the environment to be air conditioned and a heat transfer fluid 10 circulating in a hydraulic system internal to the air handling unit. The external unit, on the other hand, is designed to allow heat exchanges to take place between the fluid heat transfer medium and the external environment so that the conditions are restored ideal thermal properties of the heat transfer fluid so that this, once pumped back into the internal unit via heat transfer ducts called 15 also "refrigeration lines", capable of air conditioning the environment closed through heat exchange processes. The internal unit, also identified with the terms "hydronic terminal" or "split" or “fan coil”, it can cool or heat the closed environment in which it is installed depending on the user's preferences. In particular, an internal unit 20 is typically made of a plastic and / or metal body comprising a heat exchange battery (or radiator) in fluid connection with the external unit, a fan driven by a motor to convey the air to be treated through this exchange battery, inside the split and the slots in the body of the split itself for allow the air to be treated to enter the internal unit and exit of the air conditioning. Most of the known hydronic terminals have a battery of 5 heat exchange arranged inclined, with respect to a vertical plane, and above underneath it is positioned the radial emission fan configured for create an airflow passing through the battery itself. These hydronic terminals, although functioning correctly, often they appear bulky as the inclined position of the battery takes up 10 space transversely to the horizontal plane which is often represented from an installation wall. Devices with such characteristics are known from document WO2022123484A1. Hydronic terminals with a box-like shape are also known in which the fan for conveying air inside the terminal 15 itself is interposed between the heat exchange battery and a face main body of the box-shaped body generally featuring vents for the air passage. In other words, there are known splits in which the battery of heat exchange is interposed between the fan and the wall or partition split installation. A device having a configuration of such 20 type is known from document EP 2 446 197 B1 or from document EP1008814B1. It should be noted that the choice of the hydronic terminal to be installed is conditioned by the position on the installation wall of the lines refrigeration that allow the connection of the internal unit with the unit 25 external. In other words, the connections to the refrigeration lines could be arranged to the right or left of the terminal. Therefore, what often happens during the installation phase is that the fittings are in opposite position to the position of the lines of 30 refrigeration. It is therefore necessary to have a technician intervene during the process. of installation. In particular, the hydronic terminal technician (or the person responsible for installing the device) should intervene by dismantling the device and rotating the heat exchange battery and the constituent elements associated with it in order to adapt the split to the site of implant. This operation has disadvantages, both from the point of view 5 economical and time-consuming, as it requires technical intervention additional to the normal installation procedure. Furthermore, this solution is not always feasible. In fact, in hydronic terminals equipped with heat exchanger inclined with respect to the faces of the body, a possible changing its positioning would lead to an incorrect functioning 10 optimal of the same, causing a reduction in the efficiency of the unit of air treatment. Not to mention that often, the person who takes care of making this modification does not require the necessary technical skills in relation to the device, and therefore this movement is performed in unsafe way. 15 Therefore, the installation of the currently available hydronic terminals can lead to obvious disadvantages. Furthermore, the splits in which the fan is placed between the battery of heat exchange and the main face of the box body not in contact with the installation wall are subject to high dispersion 20 energy. In other words, the hydronic terminals in which the exchange battery thermal is arranged between the fan and the installation wall are subject to a high dispersion of thermal energy towards the wall. Therefore, it is it is necessary to equip these types of hydronic terminals with devices for thermal insulation. 25 Furthermore, consider the use of a heat exchange battery inclined with respect to a main face of the box-shaped body leads to have a device with a non-optimized footprint. Therefore, the hydronic terminals available today have disadvantages in more ways than one. points of view. 30 The technical task of the present invention is therefore to make available a hydronic terminal for unit systems air treatment that is able to overcome the problems that have emerged from known art. The aim of the present invention is therefore to provide provision of a hydronic terminal that allows for easy installation. 5 A further aim of the present invention is therefore to to make available a hydronic terminal that is not subject to a high heat dispersion. The specified technical task and the specified purposes are essentially reached by a hydronic terminal including the technical characteristics 10 set forth in one or more of the attached claims. The dependent claims correspond to possible embodiments of the invention. In particular, the present invention relates to a hydronic terminal for air handling unit systems comprising a casing of box-shaped conformation comprising two opposing main faces 15 close together and four perimeter faces, and defining a volume of containment. Inside the aforementioned containment volume is there is a heat exchange battery arranged vertically and parallel to a first main face of the body. Furthermore, the hydronic terminal which is the subject of the present invention 20 includes a fan with rotation axis perpendicular to the two main faces and the latter is arranged between the heat exchange battery and a second main face. In the first main face of the the body is defined as having at least one inlet opening suitable for the passage of air to be treated in the aforementioned hydronic terminal. Further, at least 25 an exit opening is defined on each of two perimeter faces opposite ones suitable for the passage of the air taken from the hydronic terminal. The hydronic terminal which is the subject of the present invention also comprises a plurality of condensation collection trays arranged perimeter with respect to the heat exchange battery. 30 According to one aspect of the present invention the hydronic terminal includes a motor capable of controlling the activation and deactivation of the fan. Preferably, but not necessarily, the motor is connected to the body via a support plate made of material metallic. According to a preferred embodiment, the exchange battery 5 thermal is substantially prismatic in shape with a rectangular section and It includes two faces of greater extension parallel to the faces main. In detail, one of the two largest faces of the heat exchange battery is placed at a relatively close distance compared to the first main face of the hull. 10 In detail, the hydronic terminal which is the object of the present invention includes air filters placed between the first main face and the heat exchange battery in order to purify the air to be treated. Furthermore, the hydronic terminal comprises a plurality of panels conveyors placed between the heat exchange battery and the fan 15 in order to define together with the body a volume of air diffusion sucked in by the fan and ensure increased efficiency in exchanges thermal and therefore in the air conditioning of the environment. In particular, the filters of the above mentioned air are preferably arranged in support of the external face (facing outwards) of the heat exchange battery in 20 so as to cover the entire surface, thus intercepting dust, hair and macroscopic particles present in the incoming air. According to a possible alternative embodiment, the terminal hydronic can be installed on the ceiling. Please note that according to this installation the the arrangement of the condensation collection trays should be 25 adapt to the layout of the hydronic terminal itself. In other words, in the embodiment of the hydronic terminal ceiling-mounted, the collection trays are arranged parallel to the main faces of the exchange battery, but, for example, spaced apart from the latter through a cavity arranged along the perimeter between 30 tray and heat exchange battery to allow air to pass through. Further features and advantages of the present invention will appear. made clearer by the indicative, and therefore non-limiting, description, of an embodiment of a hydronic terminal for unit systems of air treatment. 5 This description will be set out below with reference to the united drawings, provided for indicative purposes only, and therefore not limiting, in which: - figure 1 represents a perspective view of the hydronic terminal subject of the present invention; - Figure 2 represents a rear perspective view of the terminal 10 hydronic; - Figure 3 represents a rear perspective view of a terminal hydronic with focus on hydraulic fittings; - figure 4 represents a perspective view of the hydronic terminal represented in figure 3 and rotated 180° on the frontal plane; 15 - Figure 5 represents an exploded view of the hydronic terminal. With reference to the attached figures, with the numerical reference 1 it is indicated a hydronic terminal as a whole which, within the scope of the This description will be referred to as “hydronic terminal 1”. With reference to the attached figures, the hydronic terminal 1 for unit systems 20 air treatment includes a 2 box-shaped body, in turn comprising two main faces 3 facing each other closely together and four perimeter faces 4. The body 2 defines a volume of container in which a heat exchange battery 5 is housed arranged vertically and parallel to a first principal face 3a. 25 The hydronic terminal 1 also includes a fan 6 with axis of rotation “X” perpendicular to the two main faces 3. The fan 6 is interposed between the heat exchange battery 5 and a second face main 3b. In the first main face 3a at least one entrance opening 7 is defined 30 suitable for the passage of air to be treated in the aforementioned hydronic terminal 1. As shown for example in figure 1, the first main face 3a It has a plurality of entrance openings 7. The entrance openings 7 they can have any shape suitable for passage of the air. For example, in figure 1 the inlet openings 7 have elongated conformation. Preferably, the inlet openings 7 are 5 arranged parallel to each other and can have different lengths. Additionally, at least one outlet opening 8 is defined on each of two 4 opposite perimeter faces in order to create an air outlet passage treated. Preferably, and as shown in the attached figures, the 4 opposing perimeter faces may comprise a plurality of 10 exit openings 8. In a completely analogous way to what was said for the inlet openings 7, outlet openings 8 may have a any shape (elongated or not) suitable for the passage of air. In particular, the hydronic terminal 1 comprises a plurality of trays 9 collection tanks for condensation arranged around the perimeter of the 15 heat exchange battery 5. With reference to the attached figures, the collection trays 9 are arranged above and below compared to the heat exchange battery 5. In accordance with a preferred embodiment, the plurality of collection trays 9 are arranged in correspondence with the perimeter faces 20 opposite (4a, 4b) comprising at least one exit opening 8 for the passage of air conditioning. Preferably, the body 2 is made entirely of plastic material. In particular, wall 3 of the body in use is placed in contact with the wall or installation wall, is made of plastic material. 25 Advantageously, the choice to make the entire body structure 2 in plastic material allows for the provision of a hydronic terminal 1 characterized by a reduced weight. At the same time, the 2 in body plastic material ensures thermal insulation of the hydronic terminal 1 not requiring the use of additional insulation devices. 30 According to one aspect of the present invention, the hydronic terminal 1 is can be installed on a vertical wall and includes two collection trays 9. One of these is positioned below the battery heat exchange 5 while the other is positioned above the heat exchange battery 5. In detail, the 9 collection trays are made as single pieces 5 connected to the body 2. According to an alternative embodiment, the collection trays 9 they are made of one piece with the body 2. In other words, the collection trays 9 are arranged in correspondence of opposite perimeter sides of said heat exchange battery 5 so as to 10 collect the condensation of said heat exchange battery 5 both when the latter is in a first position, whether it is in a second inverted position with respect to the first position. The collection trays 9 are shaped to present respective areas condensation containment facing the said exchange battery 15 thermal 5 and opposed to each other. Furthermore, the collection trays 9 are respectively facing said heat exchange battery 5 at the two sides of the same heat exchange battery 5 in which there are no fittings 11. Preferably, the collection trays 9 are equipped with a duct 20 drainage hydraulics 10 and / or a water recovery system condensation. Advantageously, the condensation that is created following heat exchanges useful for air conditioning is recovered in the collection trays 9 and therefore drained through special hydraulic drainage pipes 10 25 so that condensation water does not stagnate inside the collection trays 9 which could lead to the formation of germs and bad smells. In particular, the hydronic terminal 1 comprises a plurality of connections 11, suitable for the hydraulic connection of the hydronic terminal 1 itself with 30 an external unit via heat transfer fluid ducts (e.g. lines refrigeration) in which there is recirculation of a heat transfer fluid between the battery of heat exchange 5 and the external unit. Preferably, the second main face 3b has an opening 12 suitable for the passage of the heat transfer ducts. 5 According to a preferred embodiment of the present invention, the hydronic terminal 1 can be installed on a vertical wall and body 2 It has a 4th upper perimeter face and a 4th perimeter face lower 4b and at least one exit opening 8 is present in the face upper perimeter 4a and in the lower perimeter face 4b for 10 allow the exit of a symmetrical flow of conditioned air towards the ceiling and towards the floor. Advantageously, the presence of at least one outlet opening 8 in the upper perimeter face 4a and in the lower perimeter face 4b and the presence of two collection trays 9 positioned respectively 15 below and above the heat exchange battery 5 gives the hydronic terminal 1 a high versatility. In other words, the hydronic terminal 1 is made according to a single configuration in agreement with the previous description. However, the hydronic terminal 1 is wall-mounted regardless of the layout of the ducts 20 heat transfer unit in the installation wall. In other words, the terminal hydronic 1 does not present a first configuration in which the plurality of fittings 11 are positioned on the right of the hydronic terminal 1 and a second configuration in which the plurality of fittings 11 are positioned on the left of the hydronic terminal 1. In fact, the hydronic terminal 1 object 25 of the present invention can be rotated 180° on the frontal plane (from first position to second position and vice versa) to adapt the position of the plurality of fittings 11 with the position of the ducts of the heat transfer medium on the installation wall. Advantageously, it is possible to provide for the presence of two collection trays 9 for 30 condensation allows you to adapt the hydronic terminal 1 to the installation site through its rotation and at the same time ensuring the recovery of the water condensation through a collection tray 9. In detail, the collection tray collection 9 in use will be the one placed closest to the ground. With reference to the attached figures, figure 3 and figure 4 show the same hydronic terminal 1. In particular, in figure 3 the terminal 5 hydronic 1 presents a suitable arrangement for the system on a wall vertical showing the heat transfer ducts in its left portion while figure 4 represents the hydronic terminal 1 rotated by 180° on the frontal plane and therefore has a layout suitable for the system of the hydronic terminal 1 on a vertical wall featuring the ducts of the 10 heat transfer medium in its right portion. Preferably, the hydronic terminal 1 which is the subject of the present invention It also includes an air flow diverter in use configured for selectively select an outlet opening 8 (i.e. a plurality of outlet openings 8 or a perimeter face 4a or 4b) for the air 15 treated. In other words, the flow diverter allows the air to flow air conditioned unidirectionally towards the ceiling or towards the floor. Preferably, the air flow diverter, not shown in the figures attached, is made in the form of a bulkhead or an insert and preferably it is made entirely of plastic material. 20 Advantageously, the flow diverter allows to obtain a flow one-way towards the ceiling or towards the floor. Advantageously, the delivery of a unidirectional flow allows for optimize comfort in the air-conditioned environment based on the season. In other words, use the flow diverter to direct the flow of 25 warm air conditioning to the floor during the winter period allows you to exploit natural convective motions to reduce the flow stratification. The same happens when using the diverter flow to direct the flow of cold air conditioning towards the ceiling in the months characterized by high temperatures. Therefore, it is possible 30 increase the efficiency of the hydronic terminal 1 and at the same time guarantee high comfort for those in the air-conditioned environment. In accordance with one embodiment of the present invention, the fan 6 is preferably of the centrifugal type, with backward curved blades, axial intake and radial emission, preferably of the type “turbofan”. 5 Advantageously, the use of an axial suction fan 6 and radial emission allows to minimize energy dispersion thermal towards the installation wall. Advantageously, the hydronic terminal 1 which is the subject of this The invention does not require the use of insulating panels or insulating gaskets 10 additional as the body 2 in plastic material and the fan 6 minimize the dispersion of thermal energy towards the wall installation. The hydronic terminal 1 also includes a motor suitable for controlling in turning on and off the fan 6. Furthermore, the body 2 15 comprises an engine housing area defining a support anti-vibration. Preferably, the anti-vibration mount comprises a plate engine support made of iron to avoid deformations of the body 2. 20 Advantageously, the hydronic terminal 1 can be installed on the wall and comprising two collection trays 9 arranged respectively below and above the heat exchange battery 5 allows you to have a rotatable or reversible hydronic terminal 1 180° on the frontal plane and therefore allows the hydronic terminal 1 25 can adapt to the installation site. In other words, the hydronic terminal 1 can be installed in vertical walls with duct terminals of the heat transfer medium in both the right and left portions of the wall installation without the need for a technician maintenance. In particular, the hydronic terminal is defined as "reversible" 30 as it can be completely turned upside down in function of the position of the heat transfer ducts (it is sufficient to connect the hydraulic drainage conduit and / or water recovery system condensation to one tray or the other), Advantageously, the hydronic terminal 1 which is the subject of this invention ensures minimization of energy dispersion 5 thermal towards the installation wall not including components additional insulation. Advantageously, the body 2 is made entirely of material plastic ensures adequate thermal insulation of the hydronic terminal 1 and contributes to minimizing the weight of the invention. 10 Advantageously, the presence of the flow diverter contributes in optimizing the operating efficiency of the hydronic terminal 1. Advantageously, the hydronic terminal 1 as described above It has a high installation versatility which allows it to be assembly regardless of the arrangement of the ducts 15 heat transfer media of wall systems. Advantageously, the hydronic terminal 1 is easy to install ensuring a reduction in assembly times and costs. THE AGENCY Eng. Davide Anselmi

Claims

1. Hydronic terminal (1) for air handling unit systems comprising: - a box-shaped casing (2), comprising two closely spaced opposing main faces (3) and perimeter faces (4), and defining a containment volume; - a heat exchange battery (5) arranged vertically and parallel to a first main face (3a) inside said containment volume; - a fan (6) with rotation axis (X) perpendicular to said two main faces (3) and interposed between said heat exchange battery (5) and a second main face (3b) so as to create an air flow through said heat exchange battery (5); - at least one inlet opening (7) defined in said first main face (3a) and suitable for the passage of air to be treated in said hydronic terminal (1);- at least one outlet opening (8) defined on at least one of the two opposite perimeter faces (4) suitable for the passage of the air treated by said hydronic terminal (1) out of the outlet; and characterised by the fact that it also comprises a plurality of collection trays (9) for the condensation arranged perimetrically with respect to said heat exchange battery (5); said collection trays (9) being arranged in correspondence with opposite perimeter sides of said heat exchange battery (5) so as to collect the condensation from said heat exchange battery (5) both when the latter is in a first position and when it is in a second position upside down with respect to the first position so as to create, in use, a reversible hydronic terminal with reference to the installation of the same on an installation wall.; 2. Hydronic terminal (1) in accordance with claim 1 wherein said collection trays (9) are shaped to present respective condensation containment areas facing said heat exchange battery (5) and opposite each other.

3. Hydronic terminal (1) in accordance with one or more of the preceding claims, wherein said collection trays (9) are respectively facing said heat exchange battery (5) in correspondence with the two sides of the same heat exchange battery (5) in which there are no connections (11).

4. Hydronic terminal (1) according to one or more of the preceding claims, wherein said plurality of collection trays (9) is arranged in a position corresponding to said opposite perimeter faces (4a, 4b) comprising the at least one outlet opening (8).

5. Hydronic terminal (1) according to one or more of the preceding claims, wherein said body (2) is made entirely of plastic material.

6. Hydronic terminal (1) according to one or more of the preceding claims, wherein said hydronic terminal (1) can be installed on a vertical wall and comprises two collection trays (9), one positioned below said heat exchange battery (5) and one positioned above said heat exchange battery (5).

7. Hydronic terminal (1) according to one or more of the preceding claims, wherein said collection trays (9) are equipped with a hydraulic drainage duct (10) and / or a condensation water recovery system.

8. Hydronic terminal (1) in accordance with one or more of the preceding claims, comprising a plurality of fittings (11), suitable for the hydraulic connection of said hydronic terminal (1) to an external unit via pipes of a heat transfer fluid in which the refrigerant fluid is recirculated between said heat exchange battery (5) and said external unit.

9. Hydronic terminal (1) according to claim 8, wherein said second main face (3b) has an opening (12) suitable for the passage of said heat transfer fluid ducts.

10. Hydronic terminal (1) according to one or more of the preceding claims, wherein said hydronic terminal (1) can be installed on a vertical wall and wherein said body (2) has an upper perimeter face (4a) and a lower perimeter face (4b) and wherein at least one outlet opening (8) is present in said upper perimeter face (4a) and in said lower perimeter face (4b).

11. Hydronic terminal (1) according to one or more of the preceding claims, further comprising an air flow diverter in use configured to selectively select an outlet opening (8) of the air treated in said hydronic terminal (1), between said outlet opening (8) present in said upper perimeter face (4a) and said outlet opening (8) present in said lower perimeter face (4b).

12. Hydronic terminal (1) according to claim 11, wherein said flow diverter is made in the form of a bulkhead or an insert, preferably made of plastic material.

13. Hydronic terminal (1) according to one or more of the preceding claims, wherein said fan (6) is of the centrifugal type, with backward curved blades, axial suction and radial emission.

14. Hydronic terminal (1) in accordance with one or more of the preceding claims, comprising a motor suitable for controlling the activation and deactivation of said fan (6) and in which said body (2) comprises a housing area for said motor defining an anti-vibration support.