WO2009153365A1 - Low-consumption electric radiator - Google Patents

Abstract

The invention relates to an electric radiator formed by a rectangular frame partially divided inside into two regions and comprising a removable front cover. The upper surface of the left region comprises an outlet grate, and a diffusing element in the form of a finned coil is arranged inside the frame and connected, by suitable connecting means, to the exchanger heater store located in the right region and consisting of a suitable material which is hermetically sealed and covered with an insulating material, housing a heat-transfer fluid, a coil and an electrical resistor. The volume of the liquid circulating inside the coil of the exchanger and the diffuser is approximately 500 cm³, which promotes low energy consumption. The pump and at least two electronic and thermostatic devices regulating the ambient temperature and the temperature of the heat-transfer fluid of the store are arranged outside the store but inside the frame. The system has safety valves for the coils and for the store. All of these elements, together with the resistor, are connected to the electric power supply source.

Description

LOW CONSUMPTION ELECTRICAL RADIATOR The present invention relates to a heat radiating apparatus that, although externally may resemble those already known in the state of the art, provides a great variety of novelties with their corresponding advantages. It is about obtaining an autonomous modular radiator that allows to adapt to the needs of each room or area, being able to be used both in private homes and in buildings, warehouses and in any other place where the use of heat radiation is required. The use of this type of apparatus is well known especially in countries where at various times of the year the temperature drops considerably. The name of the radiator comes from the fact that at the beginning, when it was invented, it was assumed that heat was exchanged for radiation but, given the small surface area it presents, only in a few cases this is true, when its surface temperature exceeds 70 ⁰ C. In most cases with normal regulation systems that temperature is not reached and most of the heat is exchanged by convection. The heat emission or dissipation of a radiator depends on the difference in temperatures between its surface and the surrounding environment and the amount of surface in contact with that environment. The greater the exchange surface and the greater the temperature difference, the greater the exchange. An apparatus that is heated by an electric resistance is often called a radiator, but according to the previous definition, this would be a stove, as it produces its own heat. Although in this case there is no emission of gases or other substances, at least in the place where the energy is consumed, but there can be, and importantly, in the place of production of the electrical energy. A radiator needs a maintenance consisting of a periodic purge, by which the air that has entered the pipes is eliminated preventing the entry of hot water to the elements that make up the radiator. Apart from the trap, a radiator must have a stopcock, an inlet for hot water and an outlet for water cooled with another key that is used for hydraulic balancing and to disassemble the radiator, which is called a detentor. When to A radiator is added to a fan to accelerate its action, called a fan coil or heater. The difference between a radiator and a stove is that in the radiator there is no energy production, it is limited to being a heat sink that reaches the radiator generally through a network of pipes through which heated water circulates in a heat producing device located somewhere else.

With the present invention it is intended to solve several disadvantages that present this type of radiators such as those mentioned above. It has also been intended to create an apparatus that provides greater safety and comfort, while at the same time seeking to save costs, spaces, time and also facilitate the transfer and handling of said devices.

The patent object of this invention has its scope in the auxiliary industry of heat radiators, specifically that which is responsible for electric radiators.

The state of the art provides several heat radiation devices, although none with the novelties proposed by the present invention or with the advantages it provides.

In utility model no. 273 137 there is a wall-type boiler comprising a closed hydraulic circuit for ambient heating water and an open hydraulic circuit for domestic hot water characterized in that the secondary changer comprises means of transport that cooperate with each other and with the internal wall of said changer to guide the heating water on the coils crossed by the sanitary water and to create suitable calm chambers to favor the heating water deairation allowing a bypass channel to directly connect the inlet and the outlet when the Ia is interrupted. circulation in the sanitary water circuit.

Document ES 480 871 provides a heating system of the type in which the heating is carried out by means of heating elements, by hot water produced in a heating element, such as a boiler, characterized in that the heating elements are constituted in each room or zone that must be heated by at least one conductive tube that in a meandering way it is embedded in the floor of the room or area and whose ends are connected to a distribution manifold that is arranged in turn connected to the water heater and that independently regulates the temperature of each zone by means of respective thermostats and valves, such as solenoid or motorized valves.

In ES 1 065 787 we find a modular electric radiator, characterized in that it comprises at least: heating means, comprising at least a plurality of thermal metal resistors, a plurality of curved profile diffuser modules, comprising, in turn, a plurality of internal fins, joining means, a plurality of joining bars. Radiators of the exposed type are already known, in which the body is constituted by at least two horizontal ducts, one upper and the other lower, and a series of vertical ducts running between the horizontal ducts closed at their ends. This body is completed with two series of external diffuser fins, located on either side of the set of horizontal and vertical conduits, in coplanar position on each side. The assembly thus formed is closed on the sides by means of covered paths that house the control elements, such as ignition switch, thermostats, etc. It is also known that the whole body is subdivided, according to planes perpendicular to the horizontal conduits, in equal independent modules, each of whose modules includes sections of horizontal ducts, a vertical duct that runs between the sections of horizontal ducts, in which it flows, and two vertical diffuser fins that run in coincidence with the vertical ducts, attached to them. The horizontal pipe sections have internal threading in different directions from their end sections. The union of consecutive modules is carried out by means of intermediate bushings that are arranged externally and from their extreme thread sessions in different directions, coinciding with the internal of the horizontal sections of tubes, so that by turning these intermediate bushings in the corresponding direction they curl at the same time at the opposite ends of the horizontal sections of the tubes of two consecutive modules. In these radiators the composite body based on the horizontal and vertical pipes is filled with oil or a similar thermal fluid, which is heated by electrical resistors installed inside the same body. This constitution requires that the closure of the ends of the horizontal pipes be tight, in order to prevent thermal fluid leakage. On the other hand, the weight of these radiators is relatively high as the set of horizontal and vertical pipes is filled with oil or other similar thermal fluid. Finally, it should be noted that the fact that the radiator is filled with oil implies an increase in the cost of the radiator.

Radiators connected to boilers that require a large investment in facilities and maintenance are currently known in the state of the art, also presenting the inconvenience that if a leak or any other problem occurs in any part of the installation , the entire system is affected. Also known are electric radiators that consume a large amount of electrical energy, which makes their use quite expensive.

Many of the systems mentioned above also do not provide sufficient security to the facilities, while they are uncomfortable because they cannot be easily transported, many of them are fixed so it is impossible to move them if you want to change their location. We also find that the known radiators are heavy and do not allow the adaptation of the temperature in the place where it is used. The installation of these devices is complicated and expensive, and in many of them it is impossible to connect them with alternative and ecological energies.

However, a radiator based on a set of methods, materials and elements that allow a use adapted to the user's needs is not known. Nor is the application of this system so practical and economical in electric radiators known.

All these conjugate elements give rise to a final result in which significant differentiating characteristics are provided compared Current state of the art, providing a series of advances in the elements already known with their corresponding advantages. In particular:

• A low power consumption radiator is provided because the volume of the liquid to be heated is reduced.

• Its manufacture, installation and maintenance is simple and economical, considerably reducing the final product.

• It can be used with renewable energy such as solar or wind.

• Since it is autonomous and non-central modular, the temperature can be set according to the user's preferences according to the area you want, for example, being a room at a certain temperature and another at a different one.

• It is easily transportable and low weight.

• Being electric, it is not susceptible to gas leaks, which makes it safer.

• Does not require works or licenses for installation in any type of building.

• It does not require a central installation or a general pipe network. • Save space by its small volume and easily allow the change of site as it is not a fixed device.

Thus, the invention is constituted from the following elements:

A rectangular housing partially divided in its interior into two zones and with removable front cover, presenting on the upper face of the left area an outlet grill, and inside a diffuser element that is a finned coil, connected by appropriate joining means to the heat exchanger tank that is in the right zone, of suitable material, hermetically sealed and covered by an insulating material, housing inside a thermal fluid, a coil and an electrical resistance. Outside the tank but inside the housing, there are the pump and at least two electronic and thermostatic devices that regulate the ambient temperature and the thermal fluid of the tank. The system features safety valves for coils and for the deposit. All these elements, together with the resistance, are connected to the power supply.

In a different embodiment, both the dimensions and the volume of the liquid circulating inside the exchanger coil and the diffuser vary according to the needs of the area to be conditioned.

The resistance of the tank heats the thermal fluid inside, transmitting heat to the fluid that runs through the coils of both the tank and the diffuser where the air is heated.

Figure 1: Radiator perspective In the figure the numbered elements correspond to the following:

1. Housing

2. Starting grid

3. Diffuser

4. Heat exchanger tank 5. Thermal fluid

6. Coil

7. Electrical resistance

8. Bomb

9. Electronic and thermostatic devices 10. Safety valve for coil and tank

The preferred embodiment given by way of non-limiting example is constituted from a rectangular housing (1) partially divided in its interior into two zones and with removable front cover, presenting on the upper face of the left zone an outlet grill (2), and inside a diffuser element (3) that is a finned coil, connected by appropriate joining means to the heat exchanger tank (4) that is in the right area, of suitable material, tightly closed and covered by an insulating material, housing inside a thermal fluid (5), a coil (6) and an electrical resistance (7). The volume of the liquid circulating inside the exchanger and diffuser coil is approximately 500 cm ³ Io which favors low energy consumption. Outside the tank but inside the housing, there are the pump (8) and at least two electronic and thermostatic devices (9) that regulate the ambient temperature and the thermal fluid of the tank. The system has safety valves (10) for the coils and for the tank. All these elements, together with the resistance, are connected to the power supply.

Claims

1.- LOW CONSUMPTION ELECTRICAL RADIATOR, constituted from a rectangular housing partially divided into two areas and with removable front cover, presenting an outlet grill on the upper side of the left area, and an element inside diffuser that is a finned coil, characterized in that it is connected by appropriate joining means to the heat exchanger tank that is in the right zone, of suitable material, hermetically sealed and covered by an insulating material, housing a thermal fluid inside, A coil and an electric heater. The volume of liquid circulating inside the exchanger coil and diffuser is approximately 500 cm ³ . Outside the tank but inside the housing, there are the pump and at least two electronic and thermostatic devices. The system features safety valves for the coils and for the tank. 2.- LOW CONSUMPTION ELECTRICAL RADIATOR, according to claim 1, characterized in that both the dimensions and the volume of the liquid circulating inside the exchanger coil and the diffuser vary according to the needs of the area to be conditioned.