Space heating device with ir emitters

Abstract

Room heating device (20) with IR emitters (1) which are arranged in the interior (14) of a hollow body preferably designed as a metal housing (4) and which heat a heat storage unit (5) arranged in the interior (14) with their radiation in a radial direction, which is swept over by an airflow to be heated, which flows into the room via a heat outlet (6) near the floor, wherein a riser pipe (9, 9a) extending in a vertical direction is connected airtight to the interior (14) of the metal housing (4), in which at least one fan (3) is arranged, which draws in the heated room air accumulating near a room ceiling (11) and returns it to the interior (14).

Description

[0001] The invention relates to a room heating device with IR radiation sources according to the preamble of claim 1.

[0002] The subject matter of DE 1 017 763 B1 is an electric space heater which is designed in the form of a cylindrical metal housing in the interior of which a number of IR radiation sources are arranged.

[0003] Starting from the inner wall of the convection section, vertical, rod-shaped, insulated electrical resistance heating elements are mounted around its circumference, extending into the annular channel of the convection section. The gap between the unit wall and the outer wall of the convection section is indirectly heated by these heating elements, as is the space between them. Both spaces therefore also act as convection channels for the room air.

[0004] A disadvantage of the well-known electric space heater is its poor heating performance. The warm air flowing from the unit rises unimpeded into the room and towards the ceiling, where it cannot be utilized. Furthermore, there are no fans to create a forced flow of warm air, meaning heating relies solely on convection, resulting in a low volume of hot air.

[0005] The invention therefore aims to further develop a space heater of the type mentioned above with IR radiation sources in such a way as to achieve a better heat balance. In particular, the invention aims to make the heated room air rising to the ceiling usable again in order to create a comfortable room climate overall, without having to provide an overheated area above the space heater and a cooler area at floor level.

[0006] To solve the problem posed, the invention is characterized by the technical teaching of claim 1.

[0007] A preferred feature of the invention is that the housing of the room heating device is connected in an airtight manner to a riser pipe, preferably telescopically adjustable in length, which riser pipe provides an extraction device in the upper area for extracting the room air near the ceiling into the riser pipe.

[0008] It is preferred that one or more fans are arranged in the riser pipe, which push the room air drawn in at the ceiling into the interior of the metal housing of the room heating device and are heated there by the infrared heating sources arranged there, in order to be blown back into the room at the foot of the room heating device.

[0009] In the prior art, hot air was circulated solely by convection, resulting in low heating efficiency, poor airflow, and a lack of control over air volume and temperature. In contrast, the invention uses one or more fans to forcefully circulate the hot air, leading to improved efficiency and higher airflow. Furthermore, the air volume and temperature can be controlled by the fan speed based on the radiant output of the infrared emitters.

[0010] Accordingly, the warm air accumulating in the ceiling area is drawn in by the riser pipe near the ceiling and returned to the room heater, where the drawn-in warm air serves to preheat the IR radiation sources and contributes to a significant saving of electrical energy.

[0011] The given technical teaching results in a significantly better heat balance because, apart from CO2-free room heating, it is possible to utilize the hot air arranged in the ceiling, after this hot air is drawn in by fans arranged in the riser pipe and blown into the interior of the device under overpressure, where the IR heating elements are located.

[0012] According to a further preferred feature of the invention, the bottom area of ​​the heating device is designed as a heat outlet, which is in principle designed as a cylindrical area with outward-facing outlet openings through which the heated air flows into the room.

[0013] In a first preferred embodiment of the present invention, this space heater is provided as a single unit for heating a room in a building. That is, such a space heater is provided for each room in a building that is to be heated in a typical residential manner. Thus, such a space heater can be arranged in every room of an apartment. It is preferred that a wireless or wired control system is provided for all space heaters, preferably in the form of an app and preferably with an internet connection. Depending on the user's selection, the control system then ensures the controlled heating of individual rooms. The user can use the app to determine, even before arriving at their apartment, which rooms should be heated to a specific temperature and which space heaters should remain inactive.Thanks to its infrared emitters, a space heater can reach full power within 1 to 5 minutes. This saves unnecessary warm-up time and avoids energy-inefficient standby operation.

[0014] In a further development of the present invention, it is provided that such a space heater is arranged centrally in a building, preferably in a basement room. With such a central arrangement in a building, the same principle applies as described above, wherein it is provided that in each room to be heated in the building at least one riser pipe extending to near the ceiling is arranged, which is preferably installed in the wall of the room. However, it can also be placed in front of the wall.

[0015] Similarly, the principle described here for a single room radiator is also continued in building heating in such a way that the outlet device located in the floor area of ​​the room heater is also led via an outlet pipe into the floor-level environment of the room to be heated.

[0016] Both pipes, namely the riser pipe for drawing in the heated room air and the outlet pipe for distributing the hot air into the room, can be combined in a single concentric double-walled pipe, which is part of the building installation, with the advantage that the heated air in the outlet pipe preheats the room air to be drawn in before it enters the room heating device.

[0017] When such a room heating device is installed on the building side, it is provided that all risers - with each riser being assigned to a room - are grouped together in a central riser register and that a number of valves are present in the riser register, so that, on demand, an intake from each room can be used via the respective room-side riser pipe for each room or for a number of arbitrarily selectable rooms.

[0018] Similarly, this also applies to the exhaust pipe, which carries the heated room air to the floor level of the respective room. Here, too, all exhaust pipes are grouped together in a register and controlled by valves, so that it can be arranged on demand that certain rooms, all rooms, or some rooms are supplied with heated air near the floor, while other rooms are not supplied with heated air.

[0019] The valves, exhaust registers and intake registers are controlled by known electronic controllers, which operate wired or wirelessly, e.g., as Bluetooth controllers or other known internet-based control elements.

[0020] The subject matter of the present invention is not only derived from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.

[0021] All information and features disclosed in the documents, including the abstract, and in particular the spatial configuration shown in the drawings, could be claimed as essential to the invention, insofar as they are novel individually or in combination compared to the prior art. The use of the terms "essential," "inventive," or "essential to the invention" is subjective and does not imply that the features so designated must necessarily be part of one or more patent claims.

[0022] The invention is explained in more detail below with reference to drawings illustrating only one embodiment. Further essential features and advantages of the invention will become apparent from the drawings and their description.

[0023] They show: Figure 1: Schematic section through a stationary space heating device for the singular heating of a room. Figure 2: Same arrangement asFigure 1 in the design of a building heating system.

[0024] In Figure 1A room heating device 20 is shown schematically, consisting essentially of a hollow cylindrical metal housing 4, which is closed at the top by a cover 13 and sealed airtight at its base by a cylindrical heat outlet 6. A number of IR emitters 1 are arranged in the interior 14 of the metal housing 4. In the embodiment shown, these are configured as two opposing IR emitters directed towards each other, whose IR radiation is directed radially outwards towards a heat storage unit that at least partially lines the inner wall of the metal housing. However, it would also be possible to arrange only a single IR emitter, or three, four, or five IR emitters, which have the advantage of being infrared light tubes that generate IR light with a short wavelength and each require 1,000 to 2,000 watts.They are therefore able to heat the inner walls of the metal housing 4 and the heat storage unit 5 arranged therein to preferably 300 °C or more within seconds.

[0025] It is preferred that the heat storage unit 5 be designed as fireclay bricks lining the inner wall of the metal housing, as these have a high heat storage capacity. However, other heat storage units can also be provided that achieve the same effect, such as concrete, limestone, lava rock, or the like. The heat storage units are heated rapidly, within seconds, by the IR emitters in the radial direction of arrow 15 and thus store large amounts of heat in a short time for an extended period. It is advantageous if the inner wall of the metal housing is equipped with preferably vertically oriented metallic convector fins to ensure optimal heating of the metal housing by the IR emitters.

[0026] To better utilize the heated room air that accumulates at the ceiling 11, a preferred feature of the invention provides that a riser pipe 9, preferably telescopic in length in the directions of arrows 10, is arranged in the lid 13 of the metal housing 4. The length of the riser pipe is designed such that its upper extraction device 2 is positioned as close as possible to the ceiling 11, but at a suitable distance for air intake. In this way, the hot room air 7, which accumulates at the ceiling and is unusable for room heating, is drawn into the riser pipe 9 via associated intake openings 8 in the extraction device 2.This is because one or more fans 3 are preferably present in the riser pipe 9, which draw in room air via the intake openings 8 in the extraction device 2 and force it in compressed form through the riser pipe 9 into the interior 14 of the metal housing 4, where it is distributed in the direction of arrow 15 within the interior over the heat storage units, the IR heat storage unit 5, and the IR emitters 1. In this way, the drawn-in hot air is heated very quickly within the interior of the housing. This saves electrical energy, as the IR emitters 1 are preheated by the drawn-in hot air.

[0027] It may be provided that one or more viewing windows 21 are arranged on the metal housing 4 in order to visually represent the activity of the room heating in order to create a comfortable impression.

[0028] After heating in the interior 14 of the metal housing 4, the air heated by the heat storage units 5 and the hot air generated by the riser pipe 9 into the interior 14 of the room heating device 20 is forced in the direction of arrow 17 into the bottom-side heat outlet 6, which is preferably designed as a hollow cylinder part with radially outwardly directed outlet openings 18, through which the heated room air exits in the direction of arrow 19.

[0029] The in Figure 1 The rod-like mounting rod 12 shown inside the riser pipe and inside 14 of the space heater 20 is intended solely as a central mounting for the fans 3 and the IR emitters 1. It is not an air-conducting pipe.

[0030] It is preferred that the interior of the metal housing 4 be black, as this allows for even better heat absorption. In the preferred embodiment, the fans are adjustable and generate an air flow rate of approximately 10 to 50 m³ / h.

[0031] Naturally, the present invention also provides for corresponding control devices for the room heating device with the IR emitters 1, for example, by continuously monitoring the outside temperature and / or the inside temperature of the metal housing and providing protection against contact. Furthermore, preferably, the airflow of the heated room air can be controlled as a function of the radiant power of the IR emitters 1, and the electrical energy of one or more fans 3 can also be regulated as a function of the radiant power of the IR emitters 1 and the amount of air to be heated, which is to flow out of the outlet openings 18 in the heat outlet 6 in the directions of arrows 19.

[0032] Using a conventional building technology, the transfer of the inventive room heating device 20 into a stationary building heating system is carried out according to Figure 2This will be explained in more detail. The same reference symbols apply to the same parts.

[0033] The room heating device 20 is preferably arranged in a basement room 24 of a building 22, with a single living room 23 being shown only as an example, which is to be heated with the measures according to the invention.

[0034] In the illustrated embodiment, the riser pipe 9 is therefore preferably arranged up to the ceiling of the living space 23 with the extraction device (not shown in detail), whereby the room air from a multitude of rooms is drawn in via valves 28 from various riser pipes 9a, 9b in different rooms. The central fan 3 would then be arranged in or on the device itself, as shown in Figure 2The illustration shows that the heated air is supplied near the floor via a number of outlet pipes 26, whereby in the illustrated embodiment only a single outlet pipe 26 leads into the living space 23.

[0035] Several additional outlet pipes 26a, 26b are provided, which direct their hot air into other rooms via valves 27, controlled by valves. This means that the principle of heating room air within seconds is applied. Figure 1 The principle shown in a room heating device 20 can also be applied to a building heating device. Drawing legend

[0036] 1. IR emitter 2. Extraction device 3. Fans 4. Metal housing 5. Heat storage unit 6. Heat outlet 7. Room air 8. Intake opening 9. Riser pipe 9a, 9b 10. Arrow direction 11. Ceiling 12. Mounting rod (for 3) 13. Cover (of 1) 14. Interior (of 1) 15. Arrow direction 16. Arrow direction 17. Arrow direction 18. Outlet openings (of 6) 19. Arrow direction 20. Room heating device 21. Viewing window 22. Building 23. Living space 24. Basement 25. 26. Outlet pipe 26a, 26b 27. Valve 28. Valve

Claims

1. Room heating device (20) with IR emitters (1) arranged in the interior (14) of a hollow body preferably designed as a metal housing (4) and which heat a heat storage unit (5) arranged in the interior (14) with their radiation in a radial direction, which is swept over by an airflow to be heated, which flows into the room via a heat outlet (6) near the floor, characterized by the fact that A vertically extending riser pipe (9, 9a) is connected in an airtight manner to the interior (14) of the metal housing (4), in which at least one fan (3) is arranged, which draws in the heated room air accumulating near a ceiling (11) and returns it to the interior (14).

2. Room heating device (20) according to claim 1, characterized by the fact that A suction device (2) with air-guiding slots (8) is arranged on the intake side of the riser pipe (9, 9a).

3. Room heating device (20) according to claim 1 or 2, characterized by the fact that the outlet side of the riser pipe (9, 9a) opens into the lid (13) of the metal housing (4).

4. Room heating device (20) according to one of claims 1 to 3, characterized by the fact that the riser pipe (9, 9a) is designed to be length-adjustable.

5. Room heating device (20) according to one of claims 1 to 3, characterized by the fact that the riser pipe (9, 9a) is designed as an air-carrying hollow cylinder or as a tube.

6. Room heating device (20) according to claim 5, characterized by the fact that the riser pipe (9, 9a) is thermally insulated.

7. Room heating device (20) according to one of claims 1 to 6, characterized by the fact that the riser pipe (9, 9a) is installed in the wall of a room to be heated.

8. Room heating device (20) according to one of claims 1 to 7, characterized by the fact that Inside (14) of the metal housing (4) a vertical central mounting rod (12) is arranged for holding the IR emitters (1).

9. Room heating device according to claim 8, characterized by the fact thatthe fastening rod (12) is connected to the heat outlet (6) on the bottom side and to the cover (13) on the top side.

10. Room heating device according to one of claims 1 to 9, characterized by the fact that the fastening rod (12) extends into the riser pipe (9, 9a) and forms the support for at least one fan (3).

11. Room heating device according to one of claims 1 to 10, characterized by the fact that the space heating device (20) is located in the basement (24) of a building (22) which has several rooms (23) to be heated.

12. Room heating device according to claim 11, characterized by the fact that The ceiling-level room air from a multitude of rooms (23) can be extracted into the room heating device (20) via valve-controlled connections from various riser pipes (9, 9a).

13. Room heating device according to claim 11 or 12, characterized by the fact thatThe heated air is supplied near the floor via a number of outlet pipes (26, 26a, 26b) in a valve-controlled manner to various rooms (23).

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