WO2011033138A1

WO2011033138A1 - Heating element

Info

Publication number: WO2011033138A1
Application number: PCT/ES2009/000458
Authority: WO
Inventors: Pedro Sanz Coronado
Original assignee: Pedro Sanz Clima S.L.
Priority date: 2009-09-17
Filing date: 2009-09-17
Publication date: 2011-03-24
Also published as: ES2381236A1; ES2381236B1

Abstract

The invention relates to a modular heating element (fig. 1B) which, compared with other existing products (fig. 1A), combines the known heating benefits and possibilities of radiation, natural convection and forced convection, making it possible to obtain greater power and improved performance, including the effective, safe use of the thermal comfort provided by radiation from surfaces at temperatures of between 80° C and 140° C. The heating element combines: a structure comprising an extruded central body provided with the heating fluid channels and flat surfaces intended to receive fins either by adhesion or another system; the efficient use of radiation from the central body with a radiating layer on the side corresponding to the interior at a temperature near that of the heating fluid and higher than that of the outer surface; a protective element that prevents the user from coming into direct contact with the hotter parts, which element is in turn perforated such that the emitted radiation can pass therethrough; a design that includes longitudinal tubes made from aluminium or another extruded product (low cost and weight), which can be adapted to the design/taste of the customer with little investment; and a high capacity in small dimensions. The heating element is flexible in that it can operate either with or without built-in fans, allowing same to obtain high heat output and to provide so-called thermal comfort at all times, expressed as "warm feet, cool head", which is desirable in said type of products.

Description

HEATING ELEMENT

SECTOR OF THE TECHNIQUE The sector of the technique to which the present invention belongs is that of the heating systems constituted with elements of identical section mounted in the lower part of the wall, and a variable length in relation to the available length for its placement , and that can be incorporated in a wide range of rooms to be conditioned with little variation, from buildings to means of locomotion.

The heating element object of the present application provides a comfortable environment producing heat at ground level and achieving the combination of heat by radiation, convection and forced convection more appropriate at each time and as required, allowing the effective use of radiation obtained at high temperatures while the user is protected from direct contact with said radiant body. The system has a great capacity to adapt to ambient conditions as well as a possible variable configuration of the complete system. You can also work in different locations with the same base unit, even if they are very diverse.

It is an easy product to manufacture and produce near the place to be used that maintains a simple design and fast and comfortable fixing and joining systems with the possibility of being customized according to the place where it will be installed. STATE OF THE ART

The heating elements installed in the lower part of the wall are well known.

There is often a terminological confusion in this sector of the technique that often leads to find named or denominated as a radiator or radiating element to any heating element even though the heat produced is not transmitted by the physical phenomenon of radiation itself but through other types of modes of generation or transmission of heat such as purely convective (heat transfer between a hot body and a fluid in contact with the first, usually the air that takes the heat of the first transporting it). The radiation on the other hand is emitted by a suitable body at a given temperature, being received at the point of destination or receiver without it being necessary for there to be any fluid medium between both bodies. Radiation can be combined with other types of heat generation means such as convection to obtain a product of improved joint characteristics provided they are allowed to coexist in an efficient and safe way allowing the passage of heat generated by both means so that it reaches the final user.

It is necessary to differentiate between the element or heating means (a hot resistance, a quartz tube, a conduit with hot fluid inside such as water, oil, etc.) that generates or from where the heat that the heating element will transmit is obtained to the passenger compartment, of the fluid medium used to transmit or send to the user or final receiver part of said heat (the circulating air normally when speaking of convection).

Next, the known antecedents in the same scope of application of the product object of the present application will be described highlighting the differences of the current proposal in front of the described background.

Some existing products and inventions describe or propose extruded aluminum profiles to generate heat by radiation but this profile is accessible to the user and therefore the risks of burns are present by direct contact, while most of the proposed systems do not allow simultaneous effectively at high powers the different means of transmission of heat such as natural or forced convection unlike the current request that with the coexistence of its system of interchangeable fins in width and pitch allow to modify the thermal power emitted by said modes of heat transmission .

On the other hand, other products try to increase the natural convection of the heating element with the use of profiles exempted in certain complex cases that allow the passage of air in vertical direction through its interior. These exempted profiles they are therefore used both vertically and as replacements for sheet fins, having nothing to do with the extruded profile for central horizontal arrangement with radiant capacity proposed in this invention. In such existing models, therefore, the heat capacity by radiation, normally scarce, is usually annulled when the heat source (pipe) is farther from the frontal profile (if any) and the radiation is hindered by the last layer of the profile. In the same way the described approach limits the power emitted by natural convection since the inner wall surface is much lower than the one proposed in the present application. Finally, the complexity of the geometry of these profiles makes them expensive to manufacture and difficult to manipulate.

In other cases, other inventions also use other extruded profiles to generate a heating element but with impaired convective heat emission capabilities by having all the vertical air passages cut off in these cases. Sometimes the concept of a protector for the aluminum profile is proposed, but unlike the present application, the performance of the heating element remains with a very low effective total power, since the media heater is not available in order to have additional convection and the Highly diminished or canceled radiation by placed protective profiles that do not have exit holes for radiation.

You can also find references to other systems where the frontal profile, intended exclusively to channel the forced flow of air when it exists does not have any holes that allow to use and emit the radiation generated in the central area of the heater. The use of fans in this case has marked disadvantages such as not integrating them within the space contained within the frontal profile, therefore a modification or extension of said profile in those places and also major construction, assembly and construction complications is necessary. space. Likewise, the heat capacity by convection would be limited by the scarce hot surface achieved in contact with the flow of air in circulation.

Others in turn raise aluminum plates or profiles joined by point contact to copper tubes bearing the heating fluid intended for the manufacture of floors or radiant ceilings for example. These heating elements also present the inconvenient in front of the invention object of this request to have the own thermal fall fruit of the scarce punctual contact of the bearing tubes of the fluid with the radiating profile of aluminum that causes that the distribution of the temperature and the following heat emission and performance are seen highly depleted

At this point it is important to end up highlighting that the above-described inventions do not satisfactorily solve the problem of combining in the same product power, economy and comfort, by not combining the different types of heat transmission (radiation, natural convection and forced convection) at high levels while at the same time obviating the protection of the user (passenger, inhabitant) against contact with the high temperatures of the radiant profile. From the analysis of the individual conclusions for each antecedent, it can be seen that none of them describes an economic system that allows obtaining high convection power indices that complement the thermal degrees of "comfort" generated by the radiation of the central profile. The system presented in this invention combines several elements, all of them of simple manufacture and assembly that allows to obtain an economic and high performance heating apparatus. A clear complementary characteristic of this invention compared to the aforementioned is the versatility of possible configurations combining modular elements such as the passage of the fins, length of the sections or use or not of fans, independent regulation by sections and the easy adaptation of the process of manufacture to different configurations of support brackets (walls with an angle, difficult access, horizontal or vertical anchoring) keeping the same main elements.

It should not be forgotten in this respect that the degree of comfort and satisfaction of the user of a heating device of this type lies in the proper distribution of heat throughout his body. DETAILED DESCRIPTION OF THE INVENTION TECHNICAL PROBLEM RAISED

Heating a cabin can be achieved in different ways. The means known and belonging to the current state of the art are based mainly on one or more of these elements combined with each other: classic wall radiators supplied with water or other hot heating fluid and a constructive and design with radiant capacity, radiation elements in the ceiling (radiant ceiling) fed with steam or another substance at high temperature, centralized heating systems for an inverted refrigeration cycle, convectors on the ground or wall, floors heated by hot water coils or electric heating elements (underfloor heating), air units conditioning and heat pump working with outside air and / or recirculated air inside, and finally, electric heaters that use heating elements, quartz tubes or infrared lamps as a heating medium.

Because the hot air rises to the highest inside an enclosure and the cold air goes down almost all the systems that do not include forced ventilation have tendency to have a temperature gradient according to the height to which we are, being always the hotter top. In addition, it must be taken into account that hot surfaces activate natural convection as the air in their vicinity warms up, which causes their specific weight to fall due to the expansion causing it to rise. The hot air replaces the cold that in its trajectory also heats up and in this way a constant current of cold air is activated that is heated and raised to the upper part of the element to be heated. Users perceive that the upper part of the body is heated before the legs and feet. The concept of comfort does not exist. The interior is warmed up and down even though the heaters are placed at the height of the feet.

The classic radiators that use hot water used as heating medium used in domestic applications may have more convection capacity than radiation but unlike pure convectors, they are characterized by the heat emitted by radiation, compensating nearby cold surfaces like those in windows.

Using fans, the air flow on the hot surfaces is raised, which makes it possible to control the heating capacity by regulating the speed of the hot surfaces and thus allowing the hot air to be directed to the desired directions.

An important concept to take into account when heating a passenger compartment as mentioned is comfort. The perception of comfort is negatively influenced by several factors, including the following: air flow at the level of the ankles and neck, feeling of heat higher in the head than in the feet, cold floor surface, heat emitted asymmetrically from the surfaces that surround us and in general hot temperatures in the high levels while the low ones remain colder. For this reason comfort is often spoken in the cold season, when you have "hot feet and a cold head".

Underfloor heating is one of the possible solutions to achieve comfort. A relatively warm floor surface makes people feel more comfortable. So the result is, hot feet on the floor radiant and head cooler because of the lower temperature that there is in the high areas.

Another way to produce that heat that makes you feel more comfortable, is to provide large surfaces that emit heat by radiation in the lower areas of the room. This method can be complemented with others, for example with forced convection that helps to obtain the necessary heat at low external temperatures. The hot air of the forced convection is distributed preferably at ground level to achieve the comfort principle of hot feet and cold head.

The use of long heating elements, at ground level, such as typical radiators but of a less high, but longer design, increases the hot floor surface and also more hot wall surface by the air flow that rises from the heating element. This is the basis for the solution to the problem proposed by this invention. Furthermore, it is known to use extruded profiles for the heating elements and there are variants that are covered as mentioned in the state of the art.

The advantages of this type of profiles is that they are easy to manufacture and the final product can be obtained with few pieces.

As regards the risk of burns, in some inventions such as those mentioned above in the state of the art, the front surface is part of the conduit that conducts the heating fluid which makes this surface heat up to almost the same temperature as the carrying fluid . When this fluid is relatively hot increases the risk of skin burns for people who may come into contact with such surfaces, especially for long stays of time near these elements among other risks (eg possibility of deformation of nearby materials, generation of odors in contact with certain materials.) Surface temperatures above 60 ° C are especially dangerous and should be avoided, although as is well known in many applications the carrier fluid flows at temperatures above this limit temperature, on surfaces exposed to contact with the occupants of the passenger compartment. The water-cooled motors carry average water temperatures between 80 ° C and 95 ° C, and can reach up to 105 ° C and above, and oil-cooled motors carry the fluid at temperatures of up to 130 ° C and above. The steam is used in a range between 100 and 135 ° C or even higher. The temperature of the heating fluid from the industrial processes of generation plants can vary between 70 and 140 ° C or more. A higher radiant heat would be obtained when the radiant surface was as close as possible to the temperature of the carrier fluid and this "heat" of the carrier fluid could be used, but the surface in contact with the occupants should be monitored with a view to not elevate the risk of burns, of possible accidents derived from reflex reactions when coming into contact with hot surfaces and the other inconveniences mentioned in the previous paragraph. It must be taken into account that heating systems that use liquids or gases transported at high temperatures could cause damage to the occupants if they come into contact with the bearing surfaces. These high temperatures are the most common in many sectors of activity (automotive, industrial, ...). Only in domestic use the fluid usually circulates at low temperature (35 ° C - 65 ° C). Another advantage of the present invention that uses conduits of aluminum, aluminum alloy or other materials is the possibility of being able to continue using the same as what happens with other existing devices, with nothing more than adapting the dimensioning of the thicknesses and diameters of the pipes and joints, different calorific fluids such as, among other hot water from a boiler, liquid coolant from the engines (water or oil), energy released from industrial plants or power cogeneration plants. Thus the means of transport can be steam, oil, water or another liquid or gaseous substance.

TECHNICAL SOLUTION CONTRIBUTED BY THIS INVENTION With the previous statement and the state of the art, the approach is how to develop a heating element of effective high power that has the property of emitting comfortable radiant heat to the lower area near the floor and allows the user to have warm feet and dry floor while the latter does not run the risk of burns from direct contact. Risk inexorably present in living quarters or rooms with a large influx or crowding of people, or in others with a pre-assigned location of passengers near those elements where space does not allow other configurations (trains, coaches, etc).

Once the raised technical problem has been developed, the solution obtained by this invention consists of exempt heating elements of elongated profile designed for horizontal arrangement and reduced weight. Using them at ground level makes the heat emitted closer to the "comfortable" heat that we talked about earlier and also be suitable for long and smooth walls. The differentiating characteristics of this heating element allow you to obtain and improve the comfort conditions usually obtained with other heaters without radiation at 20 ° -22 ° of interior temperature of the passenger compartment with only 18 ° -20 ° degrees, which results in a greater use of energy, higher yields and lower losses due to transmission and ventilation. The effective use of radiation also allows to counteract the negative effect on the comfort of windows or close glass enclosures.

. Given their small size in height and depth they are very favorable to take advantage of the space since they do not project or protrude just from the surface in which They installed. In the case of use in the lower parts of the bathroom, the heater does not protrude and keeps said space free for the feet.

The inclusion of the fluid conduits in the central profile itself reduces the costs of manufacturing and installation of the conduction systems and optimizes the use of energy.

In most cases the fluid to be used will be water, without limitation to other types of fluids as mentioned above. The choice of one or another thermal fluid in this system and the problem of working temperatures is covered in this invention by the protection profile existing in the product that allows to protect the user while choosing the working parameters more optimal for the operation of the equipment.

The object of the invention is to provide heating means for those that, when embedded in the wall, achieve optimum comfort based on a heating fluid that does not remain in close contact with the occupants, prevents skin burns and other personal injuries.

The heating element according to the present invention is the result of obtaining a high amount of heat by direct and indirect radiation in the lower part of the passenger compartment. In this aspect, the heating element in question differs from existing products due to its high temperature radiant surface protected by an integrated front cover. The front part is preferably manufactured from the same material as the conductive part of the heating fluid and is also a profile obtained by extrusion. However, this front part does not necessarily have to be made of the same heat-conducting material because it is in principle a protection against direct contact. Therefore, it can also be manufactured in extruded plastic, thermoformed parts or in bent sheet metal. The front piece will always be perforated to let the heat generated by radiation pass in the central profile.

The heating element consists of different embodiments with the same thin outer contour and based on the same central part. The embodiment may depend among others on the heat capacity required locally depending on the space available, the work requirements in different areas, in some cases using fans, for example, etc. As already indicated, this heating element also allows adapting or complementing the total effective heat output of the appliance as a function of the thermal load generated by convection (use of fins of variable geometry) or by forced convection (use of perfectly integrated fans with regulation variable speed) which confers to this invention a total effective power of values above the most demanding market requirements unlike other existing patents that do not satisfactorily resolve such coexistence of heat generation modes.

The conception and design of the present invention allows the easy incorporation of auxiliary elements such as electrical resistors, or electrical circuits printed on the central profile, which allow to heat the involved fluids (heating fluid or air) and improve power and performance by radiation and convection of the equipment and also allows other elements such as lighting bands or electrical or data lines.

The main aspects of the invention are the following:

Heat for optimized radiation: maximum heat emitted by radiation from a surface at the maximum available temperature by designing and disposing a radiating layer in the central body. It is well known in theory and from published tables that the heat capacity or power by radiation increases more than linearly with the difference of the radiant temperature (heater) and the temperature of the radiation receiving surface (people occupying space, walls, floor and ceiling). To optimize the heat output by radiation, it is necessary to have the radiant surfaces at the highest possible temperature. Indirect advantage is that the temperature of the receiving surfaces of the radiation is heated more than without their presence. With the radiating elements near the floor, part of the floor in proximity of the radiators heats up, resulting in another increase in comfort. The fraction of heat supplied by radiation is often much lower than normally expected. However, the comfort of the heat generated by radiation at ground level is higher than that which can be obtained by convection at that level due to the rising effect of the value generated by convection. Compared to natural convection, the heat obtained by radiation has the advantages:

Lower current of air moving at the level of the feet.

Higher surface temperatures at ground level. The radiated heat at the feet and the lower area of the passenger compartment increases the temperature of the interior air to the comfort temperature. The drying of the soil around the radiators in winter or humid conditions is favored, positive in places with great agglomeration and traffic of people such as trains or buses. The principle of thermal comfort of hot feet and cold head is maintained.

It allows to obtain and improve the comfort conditions usually obtained with other heaters without radiation at 20 ° -22 ° interior temperature of the passenger compartment with only 18 ° -20 ° degrees, which results in a greater use of energy, higher yields and lower losses by transmission and ventilation. The effective use of radiation also allows to counteract the negative effect on the comfort of windows or close glass enclosures.

Heat by convection, increasing the power of the heater in the same external dimensions by means of the installation of fins: the fins in contact with the central part of the heating element increase the heated surface. By providing holes in the upper and lower part, the air flows over the fins and thus produces extra heat by convection. The basic element without fins also produces part of the heat by convection although less quantity than with them.

Local increase of the power by the installation of fans: in specific locations fans and extra means for the exchange of heat can be installed. This provides a variable capacity depending on the operation of the fans. In this way, with the use of the same heating fluid supplied over the entire length of the element, it is possible to increase the capacity according to the requirements local. In addition, the air can be directed to the desired places by means of the fans. The application of fans only limits the radiant capacity in small areas but that decrease is compensated for by forced convection with distribution of air in the lower part of the cabin.

ADVANTAGES OF THE INVENTION

As a first advantage, it should be noted that the object to be patented is a continuous and long heating element, which is very suitable for extrusion manufacturing, so much that it can include all or part of the supply lines as well as the return of the heating fluid. Extrusion is a simple and well-known manufacturing process that makes it possible to obtain long elements with a constant profile, that is to say without variation in their transverse dimensions along their entire length. In addition this configuration allows an adequate installation in hospitals, office buildings and other places where the elements can be installed along the walls.

Regarding the material to be used, it is also noted that the heating element is made of aluminum which allows in many applications to combine the function of supply and return pipe with the function of radiant, convective and convective element with dimensions reduced and with a very low material weight, which means a very low material cost. Therefore the product is interesting for cars, boats, and other applications where the weight is highly important in the specifications of the product.

The combination of materials and holes is such that it allows the heat to spread optimally between the central and frontal profiles by radiation of the first and absorption of the second, and not by conduction between both, and that in turn allows an optimal radiation to the outside through the front holes effectively reaching the occupant of the passenger compartment and maintaining at all times a warm front surface but not too hot to avoid the risks associated with direct contact.

Another important advantage is the possibility of varying the power without changing the appearance of the product. The combination of continuous radiation with application of fins to increase the convection process and fans to provoke forced convection to locally strengthen the capacity, allows the external appearance of the described heating element to be identical for all possible applications, regardless of the capacity required in each of them. Regarding the heating performance of the installation, the possibility of opting for an individual control of each zone acting on the speed of the fan or fans (forced convection) can be cited as another relevant advantage.

Another advantage of the object to be patented is the ease of manufacture and the low investment cost. The use of exempted profiles entails a low cost and the ease of mechanization of them allows to quickly obtain the necessary holes for the air outlet and also to adapt said profiles to the carrier fluid and to the necessary isolation of the central part and the front part of the element heater. All this allows that this object can be easily produced in the vicinity of the place where it is going to be used, which in turn would reduce transport costs, or make the production in countries with low production costs. In addition, the use of extruded sections with relatively low execution cost (manufacture) allows for a customized design and style. The dimensions and shape of the heating element can be adjusted to the client's requirements depending on the space available and the general appearance desired.

The described heating element allows the installation on its exterior surface of conditioning equipment such as lighting, wiring and plugs for audio and video equipment and Internet or intranet connections, which due to its location on the wall is comfortable and suitable in all areas. possible applications.

Finally, the patent object that we are dealing with can be adapted in a large number of applications, among them are some concrete examples where the product behaves with greater efficiency, for example:

Buildings, houses, offices, shops, etc., especially in corridors and on the walls that face the exterior.

Industrial complexes

In the transport sector, vans, caravans, buses, trains, boats, etc. DESCRIPTION OF THE FIGURES Figure 1A, View of a classic heating element with indication of the circuit of the usual air flow where the dark arrows indicate the hot flow and the clear ones the cold flow.

Figure IB, View of the heating element object of the invention with indication of the improved air flow circuit incorporating radiation effect to the low floor where the dark arrows indicate the hot flow, the clear ones the cold flow and the grated the incidence of the radiation.

Figure 2, Isometric view of a basic radiator-convector element.

Figure 3, Isometric view of the element combined with fins for natural convection and possible application in bathrooms.

Figure 4, Isometric view of the element combined with fins for natural convection for other applications and with fixing to the ground at the bottom.

Figure 5, General view of the radiating element including fan for forced convection and with indication of the air flows absorbing the heat of the fins and distribution of air in the lower area of the passenger compartment.

Figure 6, General view of the radiating element with incorporation of electrical resistors as an additional heating medium to the heating ducts located inside it.

Figure 7, General view of the radiating element with incorporation in the frontal profile of continuous lighting bands for lighting the floor.

Figure 8, General view of the radiant element with the incorporation of power supply lines and plugs and data lines that allow the connection of electronic equipment near its location.

PREFERRED EMBODIMENT OF THE INVENTION

The heating element according to the present invention needs to contain at least one central part that includes at least one conduit for the heat conducting fluid. Is The central part will be a body directly connected to the carrying conduits of the heating fluid, a radiant surface with a face facing the inhabited space and partially exposed thereto to allow radiation heat to be emitted from the central part towards the inhabited space. It must also contain a frontal part at a lower temperature than the central radiant body provided with holes that allow radiation heat to go from the central part to the interior of the passenger compartment while protecting the occupants from possible physical damage by contact with the focus hot that is the central part that can reach high temperatures (80 ^or - 140 °) producing burns or reflex acts entailing danger.

According to FIG. 2, the heating element would make it possible to obtain a single radiator-convector in one piece, with the central and frontal areas being made in a single extruded profile. The figure maintains the differentiation of both profiles, however. In this figure you can see the conduit (1) through which the carrier fluid flows, as well as the radiating central nerve heat conductor (2) and the front part (3). In this configuration, the central part and the front cover may or may not be made in the same extrusion of a good conductor material and the arrangement of the tubes calculated to optimize the temperature distribution throughout the profile and maintain that temperature as much as possible. high possible. The front part (3) has holes for radiated heat to pass through it. In the back part, the insulation (4) attached to the wall is observed. In the upper and lower limits of the element edges (5) are included to hold it to the wall (8). The side corresponding to the radiation (6) of the central part is located opposite the passenger compartment (7) normally a little above the ground (9).

When it is desired to use fins for natural convection to increase the heat output, for example in bathrooms, kitchens, buses (Figure 3), the base element includes two conduits (1) for the carrier fluid. In this case, free space has been left for the feet, leaving the element embedded as observed. The fins (12) will be placed between the two conduits and adhered thereto by thermal contact glue. The central profile is thermally very isolated from the frontal profile either because it is two different parts in which case the joint itself will produce a drop in temperature, acting as a fuse or thermal resistance, or the use of different materials for the central profile (better driver) and the front (worst driver), either because in the case of a single profile, it has reliefs / holes on it that reduce or limit the diffusion of heat by conduction between both elements or zones, guaranteeing that the frontal profile is at a lower temperature than the central one and within the safety margins. to people's direct contacts.

In cases where wall fixing is difficult both in the upper and / or the lower areas (figure 4), the anchoring can be made directly to the floor by supports (13) and quick connection pieces (14) incorporated for this purpose. If fans for forced convection are to be included (figure 5), two ducts (1) for the fluid must also be included, as well as the side corresponding to the radiation (6) of the central part located in front of the passenger compartment must have fins ( 11, 12) both in the front (11) and in the rear (12) to increase the exchange surface, these fins emit heat by radiation even at a temperature lower than the temperature of the heating medium or the extruded central part. The fan (10) is used to activate the forced convection. The air enters the heating element through the windows of the front part through the front fins (11) towards the fan (10) that passes it to the back of the central profile, continuing the air its way through the fins rear (12) taking temperature to go outside on the sides in horizontal orientation or optionally with different orientation as desired by the customer.

In specific applications such as narrow rooms, corridors, automotive (caravans, buses, trains) etc, specific properties are required, such as a uniform aspect ratio (which is achieved by the use of exempted profiles), which can be included lighting (figure 7) (16) that can sometimes illuminate the floor with minimum energy cost, for example using LEDs coupled to the heating element. The characteristics of the object described extensively in this report make the system can be assimilated to floor heating in the vicinity of the heating element and that there is a wall surface radiating heat indirectly, all this provides a comfortable heat with a sensation of heat in the feet and freshness on the head. For applications that require it, the element easily allows the incorporation of other auxiliary elements such as electrical resistors (figure 6) (15) to heat the involved fluids (heating fluid or air) improving the performance and performance of the equipment and other elements such as power lines or of data (Figure 8) (17) subject to accommodations in the profiles (18) allowing the placement of shots (19).

Another embodiment would be to make the front profile easily removable for cleaning or inspection by means of a clipping system to the central profile such as sawtooth type or similar and where also the central profile should include the fixing elements to the floor or the wall instead to wear them the front profile.

Claims

Heating element used to heat rooms, whose main heating medium or "generator" of heat are conductive fluids at high temperature (80 ^or - 140 °), which could cause skin burns if they were not well insulated, which produces heat by radiation and by convection, characterized by having an elongated radiant central surface, with 1, 2 or more longitudinal tubes of horizontal arrangement through which the heating fluid circulates, and covered the set with a perforated protective front profile that is at "lower" temperature that the central radiant profile allowing in turn the passage to the outside of the radiated heat, and that also has lower and upper holes to allow the passage or draft of air vertically, necessary so that the element can also work together by convection with or without fins that increase the heated surface in contact with the air that surrounds it and thus favor convection n atural and the heating power.

Heating element according to claim 1 characterized in that without modification of the configuration and external dimensions can be equipped with one or more fans and an adapted configuration of heat emitters or exchange surfaces thereof directly or indirectly connected to the central part and address arrangement of the heated air according to the customer's preference and with conduits for the transport of the conductive fluid that increase the air flow and also the combined heating power of the assembly when said fans are connected.

Heating element according to any of claims 1 to 2, wherein the front part and central part are made together of a single extruded piece provided with holes that prevent the front surface from reaching high temperatures and which in turn allow the radiated heat from the central part is emitted inside the passenger compartment. Heating element according to any of claims 1 to 2, wherein the front part is not of extruded material but is a grid fixed to the central part emitting heat.

Heating element according to any of claims 1 to 3, wherein the surface in contact with the passenger compartment is made of a non-heat conducting material such as plastic or other provided with holes that prevent the front surface from reaching high temperatures and that In turn, allow the radiated heat from the central part to be emitted inside the passenger compartment.

Heating element according to the previous claims, wherein one of the front, central or rear parts is equipped with electrical resistors designed to produce heat when they are connected so as to heat the space by radiation and / or natural and / or forced convection. These resistors can be adhered to the aluminum extrusions or can be fixed to them with mechanical or other means. The electrical resistor can also act as a water heater when it circulates between different heating elements.

7. Heating element according to the preceding claims, wherein the front cover contains continuous lighting bands to illuminate the floor.

8. Heating element according to the previous claims, wherein the central part or front cover contains power supply lines and plugs and / or data lines that allow occupants to connect their electronic equipment near their location.

9. Heating element according to the preceding claims, wherein the transport conduits of the conductive fluid are oval or elliptical section.

Heating element according to the previous claims, in which the fixing of the product will be made only against the ground and whose rear part is therefore adapted and manufactured in the same way as the front so that the element can radiate and transmit heat in the same way towards both sides of it to its placement, for example, inside rooms or rooms with glass enclosures and some distance from them.

11. Heating element according to the preceding claims, whose rear part is insulated by fiber panels or insulating materials thus limiting the heat losses to said side.

12. Heating element according to the preceding claims, wherein the front surface is installed so that it is easily removable for cleaning and / or inspection and the central part contains the fastening elements.