ITVA20130007A1 - HOT AIR DIFFUSION SYSTEM FOR OUTDOOR FURNISHING - Google Patents

Description

DESCRIPTION - HOT AIR DIFFUSION SYSTEM FOR OUTDOOR FURNITURE

TITLE: HOT AIR DIFFUSION SYSTEM APPLIED TO FURNITURE ELEMENTS FOR OUTDOOR HEATING

The integrators of furnishing accessories for outdoor heating are aimed at short-range heating in outdoor environments (e.g. de hors, bar / restaurant / pub pergolas) and refer to the existing electro-hydraulic fan coil technologies and thermo fluid dynamic modeling tools already available for the design of the heating diffusers to match.

The furnishing accessory integrator is essentially conceived as a system composed of the heat output generation module (one or more for each installation) and the optional airflow diffusion module (one or more as for the generation).

1) The thermal air flow generation module:

- draws on the technical solutions already available on the market as regards the electric suction fan used, while it presents a coi! hydraulic / electric designed ad hoc to minimize the dimensional footprint and generate the flow of heating air necessary for direct orientation or for the combination with the various solutions of outdoor diffusers conceived in combination;

- it is designed to solve the technical problem of generating a low operating cost solution that is very compact from a dimensional point of view and can be perfectly integrated with the tables already available in the destination environment; in particular, the low operating cost, but also the construction cost, is guaranteed by the use of a hydraulic fan coil reached by the dedicated supply (controlled by a dedicated solenoid valve) of a flow of hot water coming from a boiler or from an air / air heat pump. water (dedicated or used for other uses) but, if there is availability of low-cost electricity (e.g. derived from photovoltaic panels or alternative sources already available at the bar, restaurant, pub), the use of an electric resistance heat exchanger or electric fan coil; as a next stage, however, it is also planned to analyze the costs / benefits of a single fuel cell (to identify an alternative and future energy source, even if the same applies to current sources) that powers all the generation modules of the outdoor area compared with the alternative of equipping each generation module with the possibility of integrating a dedicated hydrogen fuel cell with the electrical power necessary to power both an electric fan coil (or otherwise an electric heater exchanger) and a fan, so as to make each installation autonomous from the energy point of view;

- it can be equipped, optionally if indicated by the design of the installation, with a dedicated electronic control system that is able to manage the time durations, the temperatures of the air to be diffused and the generation flow rates air to allow the achievement of a design comfort called "thermal healthy bubble"; this objective condition is to be understood as the realization of a continuous distribution, or appropriately modulated over time, of heating temperatures and air flow rates (the precise target values are assumed to be available on special tables that are easy to consult, the result of a previous activity of "modeling of perceived thermal well-being"; this activity, understood as a theoretical treatment with consequent experimental characterization of the models, is considered necessary and preparatory to qualify the performance objectives of the various outdoor heating solutions) within a limited spatial volume (assume for the current discussion about 3-4 m <3>) in such a way as to transmit the perception of "thermal well-being" to the various people who use the table object of this installation;

2) The airflow diffusion module:

- it is designed, in combination with the generation module described above, for the diffusion at close range of the hot air flow rates (the flow rates used for the current treatment are 3, but they can also go down to 2, and are obtained by tapping air from as many parts in which the outlet section of the flow coming from the fan is divided) suitably oriented at different heights of the bodies of the seated people (feet, half tibia and knee / thigh) to obtain the desired perception of well-being with the least possible waste;

-it is integrated into the different types of outdoor tables and therefore is characterized by small dimensions and stability anchors (i.e. for a table with a central leg, the anchoring is designed to the table leg by means of adjustable sleeves; in the case of a table without a central leg, the anchoring is with only the thermal capacity generation module, which in turn is anchored to an upper floor by means of a structural frame or directly to the floor, more simply, by means of industrial suction cups);

- it is made in a single piece, in the case of a table without a central leg, while it is designed in several pieces in the case of a table with a central leg to reach all the people sitting around the table with the diffusion (in this case also the generation of heat output is designed in several independent pieces to adapt to the geometry of the table);

-it is made of material with a low specific weight (e.g. plastic, plexiglass) to facilitate handling and installation, with an external finish color chosen to match the existing furnishings (preferable above all the totally transparent solution which makes it in itself also a good design object in combination with specially designed lighting);

-it is designed to solve the technical problem of reaching all the people sitting around the table, to obtain the "healthy thermal bubble", only in the areas of the body of the seated people who, suitably lapped by hot air, perceive the sensation of thermal well-being;

A series of possible configurations are attached to accompany this request (all forms, however, which can be further differentiated such as inversions from bases to shelves or vice versa are intended to be covered by this patent), briefly listed and described below (in the various schemes the attachments have been indicated with the character H ii the water path and with A the air path);

I. Integrating system with thermal base and concentric diffusers with three funnels (drawing n "l):

application for tables without central leg with one-way air intake and single fan;

II. Detail of the thermal base (with hot water supply for coi!) (Drawing n <®> 2): exploded view of the thermal base of diagram no. suction fan;

III. Thermal base without diffusers with central air intake (drawing n <e> 3); solution with 4 independent modules (independently linked to the base of the table by means of industrial suction cups) for a table with a central leg with central and vertical suction, and a fan coil module below the air supply chamber of the fan and, consequently, the fan itself; these modules are connected in series to each other only by the water circuit pipes to reduce the number of water pipes arriving from boilers or heat pumps; at the fan outlet there is in any case a connection outlet, with / without adjustable fins, which directs the fan air towards the seated people;

IV. Integrator system with thermal base with 2 diffusers for table with central leg (drawing: ì two diffusers are powered by independent air paths while the water circuit of the coils is unique; in this case the thermal base assumes a "u" shape around the leg of the table and still comes to the base of the table by means of industrial suction cups;

V. Wall-mounted thermal shelf (single 90 ° sector) with central suction (drawing n * 5):; single module for generating the shape of a circumference sector, with a 90 "wide angle in the center, anchored to the table top by means of industrial suction cups and with central vertical suction, and flow rate supplied by a fan with an adjustable nozzle; ;YOU. Wall-mounted thermal shelf (single 90 ° sector) with peripheral suction (drawing n <e> 6):; single module for generating a shape in a circumference sector, with a 90 ° wide angle in the center, anchored to the tabletop by means of industrial suction cups and with radial peripheral suction; ; VII. Scheme with 4 wall-mounted thermal shelves with central suction (drawing n <*> 7): complete development solution on the whole circumference of drawing no.5 (by analogy it is possible to obtain the development of the 4-shelf configuration also for the suction modules peripheral);

VIII. Integrated solution in the tabletop with 4 thermal shelves (the configuration with 1 or 2 thermal shelves can also be used but it is not represented here due to the consistency of treatment with the segmented solution of drawing n ° 7) with central suction (drawing n < and> 8): to explore the various possibilities of integration with the table furniture complement, an integration study of the solution of drawing n ° 7 was presented, conceived as integrated into the table top and not as a wall lamp; this solution can be implemented as an integrated supply intended for manufacturing companies that produce complete tables;

Below is a detailed description of two of the achievements listed above:

a) Integrating system with thermal base and concentric diffusers with three funnels:

1) thermal generation module - thermal base (drawing n ° 2):

- rectangular section air intake with a diameter of 20 cm x 10 cm

-coil fed by the flow of hot water coming from the boiler, shaped with a connection at the inlet to the air intake and final connection to the normalization chamber that feeds the axial suction fan known n “l with height hi = 10 cm);

- normalization chamber (note n "3): empty compartment downstream of the coil (shaped) suitably shaped to form the feeding chamber of the axial suction fan;

- axial suction fan facing the normalization chamber with a characteristic diameter of D = 20 cm anchored to the underlying coil casing with screwed flange (screws a d = 3 mm) (note n ° 2, with height h2 = 5 cm)

- fan flow output fitting flange (integrated into the selected fan structure)

2) diffuser module - concentric solution for table without leg (drawing ni):

-base jointed airtight fitting (30x40xl0cm), designed to be combined with the thermal base, with integrated base to guarantee the vertical stability of the whole diffuser as a furnishing accessory; this piece integrates the external casing (note 4) of the diffuser with all the ventilation grilles of the various internal height diffusers (see following points) and the normalization grid (metallic material, note 4) of the flow out of the fan axial;

- first level diffuser (plastic material, plexiglass) (note 5); conceived as a deviator of the flow coming from the outermost circular ring of the fan section at the foot-ankles level;

- second level diffuser (plastic material, plexiglass) (note 6): which directs the air flow coming from the second circular ring of the fan at the shin level;

-third quote diffuser (plastic material, plexiglass) (note 7) that taps the necessary flow to give comfort at the thigh level;

b) Wall-mounted thermal shelf (single 90 ° sector) with central suction (drawing n <e> 5):

1) thermal generation module - thermal shelf:

-n ° 4 suction cups for anchoring the module to the table;

- central vertical air intake (section 5cm x 14cm, length = 10 cm);

- 5 cm high fan coil and 22 cm heat exchange length;

-coil outlet fitting (UAC) fan air chamber inlet (air flow normalization chamber) (note 1)

- air flow normalization chamber, located under the coil, 3 cm high;

- D = 10 cm suction fan that sucks the hot air from the chamber and accelerates it, generating an air flow for the nozzle;

2) diffuser module - nozzle:

- radial nozzle (inclined at 45 ° with respect to the vertical or equipped with directional fins) which directs the flow rate of the fan in a single direction at the height of the user's legs along the whole

Claims (10)

CLAIMS - HOT AIR DIFFUSION SYSTEM FOR OUTDOOR FURNITURE TITLE: HOT AIR DIFFUSION SYSTEM APPLIED TO FURNITURE ELEMENTS FOR OUTDOOR HEATING 1. Integration of furnishing accessories for pre-existing external environments with generation and diffusion systems of suitably calibrated hot air flows; 2. Combined use of the various furnishing complement integrators for the generation of the "thermal healthy bubble" (and of the "perception of thermal well-being") including the values of temperature distributions, air flow and variation in design time in the various applications; 3. Integrated nozzle configuration, fan coi! hydraulic / electric (or otherwise of an electric resistance heat exchanger) and suction fans for outdoor heating systems; 4. Central suction (from the center of the table) vertical for feeding the shelf or thermal base; 5. "Vertical package" solution of exchanger-air connection-air chamber-suction fan 6. Distributions of heights from the ground, air flow rates and heating temperatures provided by the various solutions of furnishing accessories 7. Air bleeding configuration with three concentric diffusers drawing from the fan outlet section; 8. Integrated solution of 100% electric thermal generation module (electric resistance heat exchanger or fan fan) coupled with hydrogen fuel cell or with power supply from other low cost alternative energies; close heating to air flow; 10. Integrated solution in table tops or in table bases of modules for generating thermal air flows;