EP2593716B1 - Cooling device for cylindrical, couplable led modules - Google Patents
Cooling device for cylindrical, couplable led modules Download PDFInfo
- Publication number
- EP2593716B1 EP2593716B1 EP11741100.9A EP11741100A EP2593716B1 EP 2593716 B1 EP2593716 B1 EP 2593716B1 EP 11741100 A EP11741100 A EP 11741100A EP 2593716 B1 EP2593716 B1 EP 2593716B1
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- EP
- European Patent Office
- Prior art keywords
- fluid
- led
- piece
- feed line
- led modules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000001816 cooling Methods 0.000 title claims description 34
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/56—Cooling arrangements using liquid coolants
- F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
- F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Definitions
- the invention relates to a device for, in particular for cooling an LED lamp or LED modules of an LED lamp, wherein the device comprises a supply line for supplying a fluid and a plurality of connected to the supply line heat exchanger, wherein a plurality of LEDs arranged on each heat exchanger and are coupled with respect to heat transfer to the heat exchanger, so that the LED lamp or the LED modules can be tempered by the fluid, in particular cooled or are.
- the invention also relates to a method for tempering, in particular cooling, an LED lamp or at least two LED modules of an LED lamp using such a device and a method for curing a light-curing tube using such a device.
- mercury discharge lamps have been used successfully for about 20 years. These usually require no cooling.
- hose liners with small pipe diameters in the domestic connection area DN 300 - DN 50, typically DN 160
- UV lamp technology gas discharge lamps
- the need for a mechanically robust holder and protective device for the glass bulb lamps also has disadvantages, since these protective elements produce shadowing, which is significant in particular with small tube diameters.
- LEDs Due to their small geometric size and usually high optical power in the range 100 W and the potentially good energy efficiency LEDs are suitable sources of radiation for the realization of high performance small special lamps for UV curing applications, especially in the field of trenchless sewer rehabilitation. They enable the realization of compact efficient light sources, which can be adapted to the optical and geometric requirements of the materials to be hardened. In addition, LEDs do not require any waiting time to achieve full operational performance, as they can be switched quickly (in the range of milliseconds or even shorter). Furthermore, LEDs emit in narrow spectral ranges with half-widths of typically 10-40 nm, so that no infrared radiation is emitted by UV LEDs and blue LEDs. As a result, thermally induced dissociation of the polymers to be crosslinked can be avoided.
- Such LED lamps which are used as channel rehabilitation curing devices with such high power density, often require cooling as efficiently as possible, which prevents them from degrading due to overheating of their components.
- Such slim, linear LED lamps which are used, for example, in pipes or other spatially confined environments, always the problem arises that for additional components, the cooling of the LED lamps or LED modules of the LED Lamps serve, barely room is.
- the same problem also occurs in such slim, linear curing devices, where the components in the slender region must be heated to an operating temperature to ensure reliable operation of the components, such as LED lasers.
- this circuit requires a disadvantageous, sequentially increasing flow temperature of the later flowed through by the cooling medium heat exchanger / heat sink and thus a lower efficiency and life of these modules, especially the end module, which has the highest operating temperature.
- Increasing the flow rate of the coolant is one way to reduce this effect.
- this is also associated with an increased pressure drop, the compensation of which either requires an increase in operating pressure, which makes the heat exchanger / heat sink more stressed, or requires an increase in the line cross-section, which is often not possible due to the limited space and the higher resulting weight of the system is.
- WO 2008/101499 A1 is a generic device for tempering a linear LED lamp or LED modules of an LED lamp known.
- the device comprises inside a supply line in the form of a tube, which is traversed by air to cool LEDs, which are arranged on the cylinder jacket of the tube with the air flow.
- a supply line in the form of a tube, which is traversed by air to cool LEDs, which are arranged on the cylinder jacket of the tube with the air flow.
- openings are provided through which the air flow can escape to the outside in a pipe to be rehabilitated.
- a derivative for discharging the heated air flow is not provided.
- US 2010/051168 A1 describes an apparatus and method for curing a pipeline coating.
- US 2009/32227 A1 describes an LED device for detecting and controlling the power output of LEDs within an LED array.
- US 2005/158687 A1 describes a method and apparatus for using LED emitters to cure curable mixtures and to form cured parts.
- US 2006/001384 A1 describes an LED lamp with a pipe for heat dissipation.
- US 2010/073933 A1 describes a solid-state light source with a heat sink.
- US 3,869,605 A relates to a climate reaction chamber.
- the object of the invention is therefore to overcome these problems.
- a uniform temperature of the LED lamp or the LED modules of an LED lamp should be achieved.
- liquid fluids for temperature control should be used without the LEDs can be damaged.
- the device comprises a discharge for discharging the fluid, wherein the supply line and the discharge via one L-piece at one of its ends and in addition via at least one T-piece in the supply line and at least one T-piece in the discharge are fluid-tightly interconnected or the supply and the discharge via an L-piece at the end of the supply line, which is connected to a tee in the discharge, and a L-piece at the end of the discharge, which are fluid-tightly connected to each other with a tee in the supply line , or the supply and discharge via an L-piece at the end of the supply line, which is connected to a T-piece in the discharge, and a L-piece at the end of the discharge, which is connected to a tee in the supply line, and additionally are fluid-tightly connected to one another via at least one T-piece in the supply line and at least one T-piece in the discharge, such that the fluid flows spatially separated from the LEDs and so that the supply line and the discharge line have
- the parallel-connected heat exchangers are mutually displaceable, compressible and / or movable.
- the device is of modular construction and comprises LED modules, wherein one LED module comprises two L pieces and at least one LED module comprises two T pieces or two LED modules comprise an L-piece and a T-piece and / or at least one further LED module comprises two T-pieces, and wherein the LED modules additionally comprise a fluid connection to a heat exchanger, wherein the LED modules are connected to each other via lead parts and discharge parts, in particular detachably, so that additional LED modules are easily replaceable, removable and additionally installable.
- the supply line parts and discharge parts which connect the LED modules with one another are flexible, expandable and / or compressible, in particular flexible plastic hoses and / or bellows, preferably with springs, so that the device can be dragged in a tube in an arc-like manner is.
- a development of the device provides that the LED modules are arranged geometrically linear one behind the other in series.
- the derivative is arranged parallel to the feed line.
- the fluid flows in the discharge in the opposite direction to the supply line.
- the device comprises the LED lamp or the LED modules.
- LED modules are similar, in particular identical.
- the LED lamp or the LED modules is a curing device, in particular a light source for sewer rehabilitation, wherein the fluid does not come into contact with the material to be hardened.
- each LED module comprises at least one substrate with at least one LED, preferably at least one high-power LED, which are arranged such, preferably annular, that the LEDs outwardly, preferably in all directions of a plane perpendicular to the linear structure emitting the LED lamp or the LED modules.
- a plurality of LEDs are applied as a chip-on-board (COB) on a substrate.
- COB chip-on-board
- COB chip-on-board
- each LED module comprises a connection unit to which supply lines are connected, which comprise the supply line, the discharge line and electrical cables which are at least partially connected to the LEDs.
- each LED module is surrounded by a housing, in particular a glass, stainless steel or plastic housing.
- a further alternative embodiment of the invention provides that the device comprises a supply unit which comprises a fluid regulator for controlling the flow rate and / or the temperature of the fluid through the supply line and / or the discharge line.
- the supply unit comprises an LED control for controlling the voltage applied to the LEDs.
- the device and / or the LED modules comprise at least one sensor, preferably a temperature sensor, an illuminance sensor, a current sensor, and / or a voltage sensor.
- the senor or sensors is or are connected to the fluid controller and / or the LED controller in the supply unit.
- the electrical cables of the supply line contact at least one sensor and / or a drive device and connect to the supply unit.
- each heat exchanger and / or each LED module has a cylindrical or annular structure with a circular or polygonal cross-section.
- At least two adjacent openings for the inlet and the outlet of the fluid on the inside and / or the side surfaces of the heat exchangers are provided, which are separated from each other by a partition wall in the heat exchangers such that the fluid substantially the heat exchanger flows through the entire circumference.
- the supply line and the discharge line extend through the opening of the cylindrical or annular LED modules and / or the cylindrical or annular heat exchangers.
- the supply line parts and discharge parts which connect the modules to one another are flexible, in particular flexible plastic hoses, so that the device can be dragged in an arc in a tube.
- the heat exchangers at the contact surfaces to the LEDs or the substrate at least partially made of a good heat conducting material, in particular of a metal, preferably copper, aluminum, brass or steel, and / or of a ceramic, preferably Al 2 O 3 or AIN ..
- a development of the invention provides that the fluid is a gas, in particular compressed air or nitrogen, or a liquid, in particular water.
- each LED module is designed for an optical power between 1 watt to 1000 watts.
- the LED lamp can be cooled and / or heated at least partially, in particular the LED modules, by the fluid.
- the supply line, the discharge line, the T-pieces, the L-pieces and the heat exchangers are fluid-tightly interconnected.
- diaphragms are arranged or attachable in or on the fluid connections.
- the cross-section of the fluid connections is set or diaphragms are arranged in or on the fluid connections such that all heat exchangers are flowed through with a similar volumetric flow of the fluid, so that the volume flows through the heat exchangers differ by a maximum of a factor of 3, preferably a maximum of a factor of 2.
- the object is also achieved by a method for tempering, in particular cooling an LED lamp or at least two LED modules of an LED lamp using such a device, wherein a fluid is supplied through the supply line to the at least two heat exchangers, there heat exchange with the LED lamp or the LED modules takes place and the fluid is then discharged through the drain.
- the fluid from the discharge flows into a supply unit, where it is cooled or heated and then fed back into the supply line to regulate the temperature of the fluid in the supply line, in particular in response to the signals of at least one sensor , and / or the flow velocity of the fluid is regulated, in particular in dependence on the signals of at least one sensor.
- the object of a method for curing a light-curing tube is achieved by introducing such a device for cooling a curing device, in particular a light source for sewer rehabilitation together with the curing device in the tube and then the tube is cured by the light of the LEDs while the device and curing device are moved through the tube and the curing device or LED modules of the curing device are cooled by the device, particularly using a method as already described.
- the flow rate of the fluid, the temperature of the fluid, the radiation power of the LEDs and / or the speed of movement of the device in the tube is controlled, in particular depending on the measured values of a sensor, in particular a temperature sensor, an illuminance sensor Current sensor and / or a voltage sensor.
- the invention is therefore based on the surprising finding that even with geometrically arranged in series heat exchangers these can be connected in parallel with respect to the temperature-controlling fluid and thus an equally strong temperature control at the various heat exchangers can be achieved. All device modules that are connected to the heat exchanger are thus cooled or heated equally strong by this device.
- the present invention solves the problems encountered by the cylindrical heat sink / heat exchangers are indeed arranged in series geometrically, but these are connected in parallel in the cooling circuit, each individual heat sink in Circulating direction of the circumference is flowed through. This is achieved by the supply line and the discharge of the heat sink / heat exchanger are arranged in the interior of the cylinder and these are connected by a T-piece or an L-piece with a common for all heat sink / heat exchanger inlet or outlet. These tees and L-pieces can be realized either as individual components whose branch is connected to the supply line or the dissipation of the heat sink / heat exchanger. Likewise, their temperature distribution functionality can be integrated directly into the heat sink / heat exchanger, so that the heat sink / heat exchanger on each end face has two flow and two return connections.
- the parallel connection (coupling) of the heat exchangers allows a same flow temperature of the individual heat exchangers, although these are arranged geometrically in series (for example, in a row in a tube).
- a coordinated system line resistance, flow resistance of the heat exchanger and fittings are adapted
- an equal volume flow through all heat exchangers can be set and thus the same Temper réelles concerned for all LED modules (for example, the same cooling conditions for all LED modules) can be realized.
- the heat exchanger of the LED lamp farthest from a recooler also has the same temperature as the closest one, unlike in a series connection of the heat exchangers. Due to the parallel connection, the same operating and output variables can be realized for all coupled LED modules that are temperature-dependent: efficiency, service life, emission wavelength and electrical input power.
- a parallel circuit causes a lower pressure drop in the overall system than a series connection, which becomes particularly relevant when the flow resistance in the lines are small compared to those of the heat exchanger.
- Another advantage is achieved in that the length of the individual LED modules can be reduced, which favors the Bogeninkeit the device.
- an LED lamp As a light source for the sewer rehabilitation in the service area an LED lamp was inventively found that a homogeneous irradiation of the inner wall of a tube with a small, round cross-section of about 15 cm and high irradiance of several 100 mW / cm 2 to several W / cm 2 allows.
- the LED lamp is bendable and trailing in 45 ° and 90 ° bends.
- the required power density with homogeneous illumination of the inner wall of the pipe taking into account the small diameter and the required arc conduction is over three hundred LEDs on a functioning as a heat sink heat sink with a diameter of about half the pipe diameter (about 8 cm) and a length of about one quarter of the diameter (about 3.5 cm).
- the modules In order to achieve the required radiation dose for towing speeds of a few centimeters to several tens of centimeters per minute (over 30 cm / min), the modules should be coupled together as flexibly as possible.
- the associated high optical powers ranging from a few watts to several hundred watts, also require compactness due to the required compactness of the LED lamps and the typical efficiency of LEDs (typically in the range of 1% to 50%, usually 10% to 30%) like efficient heatsinks.
- the substrates are arranged on an elongated, preferably cylindrical body with a polygonal cross-section, preferably triangular, quadrangular, pentagonal, hexagonal or octagonal cross-section.
- the LED modules can be flexibly coupled in succession.
- each heat exchanger is connected by a T-branch or an L-branch to a common for all heat exchanger inlet or outlet, which are guided centrally through the heat exchanger.
- each heat exchanger can be operated at the same flow temperature with a comparable cooling capacity or heating power, and so an equal efficiency and lifetime can be maintained via the spatially consecutive LED modules.
- the individual heat exchangers are preferably flowed through in the direction of circulation.
- the fluid which may be a gas such as compressed air or nitrogen for low power requirements, but otherwise is a liquid, and at higher powers is a high heat capacity medium, such as water, flows close to the outer surface along the outer surface Circulation of the heat exchanger along, so that the substrates are effectively cooled with the LEDs.
- the flow resistance of the fluid / cooling medium in the system is kept low, so that a smaller diameter of the supply lines can be used, as in a serially constructed Temper michssystem with the same volume flow of the fluid.
- a serially constructed cooling system may have a similar total cooling capacity, but then has a higher temperature difference of the heat exchangers with each other. This is particularly the case when the flow resistance of the heat exchangers are comparable or greater than that of the lines that connect the heat exchangers together. In the opposite case, it may be necessary to adapt the flow resistances at the individual heat exchangers to regulate a uniform volume flow, which can be achieved, for example, by the use of diaphragms.
- connection functionality in the center of the heat exchangers also allows a short length of the heat exchangers, which favors the bowing of the system.
- a device according to the invention thus has a whole series of advantages.
- a parallel wiring for coolant or Schuffeners successively befind Anlagen heat exchanger allows in a customized system, the operation of all heat exchangers under the same conditions, especially at the same flow temperature and set the same volume flow of the fluid through the individual heat exchanger.
- the operation of all heat exchangers under the same conditions especially at the same flow temperature and set the same volume flow of the fluid through the individual heat exchanger.
- this case represents a limiting case that can usually be avoided.
- a sequential increase or decrease in the flow temperature in the direction of the heat exchanger that is furthest from the flow of the system is avoided in the more complex parallel supply. This property is particularly relevant for the cooling of LEDs, which show strongly temperature-dependent properties and whose efficiency, emission wavelength, service life and operating voltage can be adversely affected.
- the flow resistance of the parallel system is lower than that of the serial system. Accordingly, either at the same operating pressure connecting lines with a smaller nominal diameter to achieve the same volume flow or at the same nominal diameter of the connecting lines higher volume flows and thus better cooling or heating outputs can be achieved at the same operating pressure.
- For an adaptation of the flow rates in the limit of high line resistance and low flow resistance in the heat exchangers and the use of different aperture for adaptation is then possible.
- the heat exchangers can be constructed in such a way that the fluid flows circularly and almost over the full area, close to the outer surface, so that efficient temperature control is achieved.
- the conduit in the heat exchanger may be macroscopic or microscopic (eg, a microchannel cooling).
- the ability to increase the efficiency of the cooling power can be used to increase the efficiency of the LED lamp and / or to increase the optical limit power of the system, since there is a temperature dependence of the LED parameters.
- the direction of circulation of the fluid from module to module can be set in opposite directions. Possible gradients which occur when the coolant is heated or when the heating medium cools between supply and return and can manifest themselves, for example, in a gradient of the optical power of LEDs along the circulation of a cylindrical LED module, can thus be distributed alternately that possible influences of such gradients are damped or even avoided during drag processes.
- connection mechanism of the connections can be of different nature: T- or L-pieces connected by hoses and hose clamps, screw-type couplings with integrated T and L function or pluggable coupling elements.
- pluggable coupling elements allows the construction of a modular LED system in which each module is replaceable, in which the supply media (power and coolant) can be connected and disconnected by a locking or non-locking (possibly drip-free) coupling mechanism.
- the connection may be separable and connectable on both sides of the module so that it is completely interchangeable without having to disassemble the complete system successively (starting from one side).
- LED modules are coupled together by rigid or elastic, expandable, compressible and / or compressible connections.
- a possible smaller cable diameter of the supply lines for the temperature control can have a positive effect on the weight of the system as well as on the flexibility of the system (bow flexibility).
- this invention may also be heating circuits, heating power, radiators and heating means.
- a heating circuit can be hardened channels, for example, thermally cured by contact heat or heat radiation.
- components such as lasers can be heated to a certain temperature to achieve a stable power and an exact wavelength of the tempered lasers.
- FIG. 1 shows a schematic view of a device according to the invention for controlling the temperature of an LED lamp or LED modules of an LED lamp and outlines a cooling or heating circuit.
- the device comprises a supply line (1) and a discharge line (2), which are both subdivided into different subregions.
- the supply line (1) and the discharge line (1) are formed by tubes. Between the sections of the supply line (1) and the discharge (2) three T-pieces (3) are arranged in each case. At the end of the supply line (1) and at the beginning of the discharge line (2) is arranged in each case an L-piece (4).
- the T-pieces (3) and the L-pieces (4) are also formed by tubes. Between each two adjacent T-pieces (3) of the supply line (1) and the discharge (2) and the two L-pieces (4) heat exchangers (5) are arranged, which are designed tubular.
- All pipe sections (1, 2, 3, 4, 5), that is the supply line parts (1), the discharge parts (2), the tees (3), the L-pieces (4) and the heat exchanger (5), can be connected to each other fluid-tight with different methods.
- the tubes can either be fixedly connected to one another, for example welded, connected to one another via press fittings, or the tubes can be releasably connected to one another, for example inserted into one another or fastened to one another via coupling pieces or hose clamps or also flanged together.
- the supply line parts (1) and the discharge parts (2) are made of flexible hoses or bellows, while the T-pieces (3) and the L-pieces (4) made of a rigid material such as solid plastic, a Ceramics or metal or a combination thereof are made and the heat exchanger made of metal, preferably made of copper, and / or a ceramic with a high thermal conductivity.
- One of the modules of the device comprises the two L-pieces (4) and a heat exchanger (5), all other modules of the device comprises two T-pieces (3) and a heat exchanger (5).
- an additional module can be easily inserted together with each of another lead portion (1) and a lead portion (2).
- each heat exchanger (5) to be tempered LED lamp or are to be tempered LED modules of the LED lamp connected so that good heat conducting connections between the heat exchangers (5) and the LED lamp or the LED modules are formed The outer dimensions of the heat exchanger (5) are adapted to the geometry of the LED lamp, or the LED modules.
- the size of the device in particular the size of the heat exchanger (5), the distance of the tees (3) and L-pieces (4) and the diameter of the supply line parts (1) and discharge parts (2) are to the size of the LED Lamp or the LED modules and adapted to their purpose.
- the fluid is a gas, such as compressed air or nitrogen, or a liquid, such as water, that transports heat energy away from the heat exchangers (5) or to the heat exchangers (5).
- the derivative (2) can also lead away from the inlet in the opposite direction. Then, the drain (2) would be mounted in reverse, that is, the L-piece of the drain (2) to the first tee (in the flow direction of the fluid) of the supply line (1) mounted and the L-piece of the feed line (1 ) to the T-piece of the derivative (2), which in the in FIG. 1 shown Embodiment to the first T-piece of the supply line (1) is connected. The flow direction of the fluid would then no longer be reversed from the supply line (1) to the discharge line (2).
- FIG. 2 shows an annular heat exchanger (15) with a cross section of a hexagonal polygon (hexagon).
- the heat exchanger (15) comprises two connecting pieces (16) through which the fluid can be passed through the heat exchangers (15), as indicated by the open arrows.
- the connecting piece (16) of the flow is on the left, that of the return on the right.
- a partition in the form of a wedge (17) separates the flow from the return of the heat exchanger (15).
- the fluid thereby flows around the axis of the heat exchanger (15) circularly in a clockwise direction, as indicated by the unfilled arrows.
- the flow is close to the outer surface (18) of the heat exchanger (15), whereby a good heat transfer is achieved.
- the ring interior of the heat exchanger (15) provides enough space to connect T-pieces or L-pieces and to pass through cables and hoses (such as a feed and a drain).
- FIG. 3 shows the schematic structure of such a connected arrangement of four heat exchangers (15) in perspective view, which together with the supply line (21) and the discharge (22), and the T-pieces (23) and the two L-pieces (24) form a device according to the invention.
- the T-pieces (23) are arranged in the supply line (21) and the discharge line (22), while the two L-pieces (24) at each of the ends of the supply line (21) and the discharge line (22) are arranged.
- the supply line (21) and the discharge line (22) are fluid-tightly connected to one another via the heat exchangers (15).
- Both connecting pieces (16) are connected with T-pieces or L-pieces to the common supply line (21) (supply) or discharge (22) (return) of a Temper michssystems that several such heat exchanger (15) can supply parallel, spatially behind the other can be arranged.
- FIG. 3 illustrates, for example, the construction of a cooling system for a high-power LED lamp, which is based on a parallel circuit for coolant supply and its heat sink acting as a heat exchanger (15) or LED modules are in a row. Except for the last heat sink (15) (top right of the picture edge) are the leads (21) and discharges (22) of the heat sink (15) through tees (23) to a common supply line (21) or discharge supply line (22) connected. The last heat sink (15) is connected by L-pieces (24) to this.
- Such connectors (23, 24) can be individual connecting elements, which are connected to the heat sinks (15) by, for example, hoses and hose clamps.
- the common mains (21, 22) may be rigid or flexible, such as polyamide hoses.
- LEDs (not shown) are mounted on the outer surfaces (18), a cylindrical LED lamp is thereby realized, with which, with suitable selection of the LEDs, a channel can be hardened or rehabilitated.
- the power supply lines for the LEDs can also be passed through the ring opening of the heat exchanger (15).
- the LED lamp is then in the context of the present invention, for example, a light source for sewer rehabilitation in the household sector.
- FIG. 4 shows an LED module (30) of such an LED lamp in a schematic cross-sectional view.
- a plurality of LEDs (32) with chip-on-board technology (COB technology) is applied on an 8-cornered heat sink (31), which acts here as a heat exchanger.
- COB technology chip-on-board technology
- a plurality of LEDs (32) are applied to a substrate (33), wherein a substrate (33) is arranged on each of the eight sides of the heat sink (31).
- the LED module (30) is surrounded by a circular housing (34) in the form of a protective glass, which is firmly connected to the LEDs (32) or the heat sink (31).
- the geometry of the LED module (30) is designed for a uniform illumination of a cylindrical hollow body, so that its inner wall is homogeneously emitted by the LED module (30) even at a slightly larger diameter than that of the LED module (30).
- a light source is needed, for example, in sewer rehabilitation.
- liquid cooling media necessary as fluids that flow through the heat sink (31). In the present case, this is circular about the axis of the heat sink (31).
- the flow around is close to the surface of the heat sink (31), so that the substrates mounted thereon (33) are effectively cooled.
- the cross section shown thus shows the cross section of an LED module (30) of an LED lamp comprising a plurality of LED modules (30) together with a heat exchanger module (31) of the cooling device, that is an LED module (30) and a heat exchanger (31). in the sense of the present invention.
- the LED lamp may additionally include electrical connections (not shown) necessary to operate the LEDs (32) and a controller (not shown) which powers the LEDs (32) and optionally provides propulsion of the system. include.
- the device according to the invention can be only the cooling system and the cooling system together with the LED lamp.
- FIG. 5 schematically shows a modular LED structure.
- the LED lamp (40) shown consists of four cylindrical LED modules (41) whose geometry is adapted to the intended use, with connection units (42), at which supply lines (43) to the LED modules (41) are connected.
- An LED module (41) comprises at least one substrate with one or more LEDs, which is mounted on a heat sink.
- the cooling medium used to cool the LEDs is gases or liquids.
- the heat sink can be made in a variety of ways (for example, milling, punching, cutting, folding, eutectic bonding of metals, etc.).
- the LED modules (41) are placed in a housing (glass cylinder, stainless steel or plastic housing, etc.).
- the LED modules (41) sensors (not shown), such as temperature, illuminance, current or voltage sensors can be integrated, which report the operating status to a control and supply unit (44), an adjustment of the Operating conditions of the LED lamp (40) to the current state allows.
- the connection units (42) allow a modular extension with additional LED modules (41), as well as a replacement for maintenance purposes. From the point of view of the cooling circuit, the parallel supply of the LED modules (41) with the cooling medium, in particular in the sense of expandability of advantage, since all heat sinks are always supplied with the same flow temperature.
- the LED modules (41) can be coupled via rigid or flexible connecting elements, so that they are strung together either rigidly or flexibly (via a protective tube, metal springs, bellows or the like).
- a flexible or rigid Supply line (43) connects the LED modules (41) with the control and supply unit (44), which includes the electrical supply and the supply of the cooling medium, as well as a control and control unit for targeted control of relevant operating parameters.
- the devices according to the invention are particularly suitable for use in sewer rehabilitation for the domestic service area (DN50-DN300, typically DN120-DN160).
- the use of the technology in this area is also conceivable for larger pipe diameters, since the system allows high powers and the geometric size is highly scalable.
- As a field of application also downpipes of gutters, chimneys or the like come into consideration.
- an LED lamp could be developed to rehabilitate side terminals that are sealed by the light curing of so-called (liner) caps.
- liner so-called
- the possibility of realizing a correspondingly constructed heating system is possible with the flexibly coupled heating elements (heating medium flows through the radiator) can heat the wall of cylindrical bodies. This can be done either by radiant power (heat radiation) or by direct heat conduction between radiator and cylindrical body in contact.
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Description
Die Erfindung betrifft eine Vorrichtung zum, insbesondere zum Kühlen einer LED-Lampe oder von LED-Modulen einer LED-Lampe, wobei die Vorrichtung eine Zuleitung zum Zuführen eines Fluids und mehrere an der Zuleitung angeschlossene Wärmetauscher umfasst, wobei an jedem Wärmetauscher mehrere LEDs angeordnet und in Bezug auf Wärmeübertragung an die Wärmetauscher angekoppelt sind, so dass die LED-Lampe oder die LED-Module durch das Fluid temperierbar, insbesondere kühlbar ist oder sind. Die Erfindung betrifft auch ein Verfahren zum Temperieren, insbesondere Kühlen einer LED-Lampe oder zumindest zweier LED-Module einer LED-Lampe unter Verwendung einer solchen Vorrichtung und ein Verfahren zum Aushärten eines lichthärtenden Rohrs unter Einsatz einer solchen Vorrichtung.The invention relates to a device for, in particular for cooling an LED lamp or LED modules of an LED lamp, wherein the device comprises a supply line for supplying a fluid and a plurality of connected to the supply line heat exchanger, wherein a plurality of LEDs arranged on each heat exchanger and are coupled with respect to heat transfer to the heat exchanger, so that the LED lamp or the LED modules can be tempered by the fluid, in particular cooled or are. The invention also relates to a method for tempering, in particular cooling, an LED lamp or at least two LED modules of an LED lamp using such a device and a method for curing a light-curing tube using such a device.
Für lichthärtende Kanalsanierungen werden Quecksilbergasentladungslampen seit ungefähr 20 Jahren erfolgreich eingesetzt. Diese benötigen in der Regel keine Kühlung. Für die Härtung von Schlauchlinern bei kleinen Rohrdurchmessern im Hausanschlussbereich (DN 300 - DN 50, typischerweise DN 160) existieren für die eingesetzte traditionelle UV-Lampentechnologie (Gasentladungslampen) wesentliche Einschränkungen in Bezug auf die erreichbare Mindestgröße (Durchmesser und Länge) der Lampen. Auch die Notwendigkeit einer mechanisch robusten Halterung und Schutzvorrichtung für die Glaskolbenlampen bringt Nachteile mit sich, da diese Schutzelemente Abschattungen hervorrufen, die insbesondere bei kleinen Rohrdurchmessern signifikant sind.For light-curing sewer rehabilitation, mercury discharge lamps have been used successfully for about 20 years. These usually require no cooling. For the curing of hose liners with small pipe diameters in the domestic connection area (DN 300 - DN 50, typically DN 160) exist for the traditional UV lamp technology (gas discharge lamps) essential limitations in terms of achievable minimum size (diameter and length) of the lamps. The need for a mechanically robust holder and protective device for the glass bulb lamps also has disadvantages, since these protective elements produce shadowing, which is significant in particular with small tube diameters.
Zur Aushärtung eines lichthärtenden Schlauchliners im Bereich der Kanalsanierung, insbesondere im Hausanschlussbereich für Rohre mit kleinem Durchmesser (kleiner gleich DN 300) ist eine kompakte, leistungsstarke, möglichst zylinderförmige Lampe erforderlich.For curing a light-curing hose liner in the field of sewer rehabilitation, especially in the house connection area for small diameter pipes (smaller than DN 300), a compact, powerful, cylindrical as possible lamp is required.
Aufgrund ihrer geringen geometrischen Größe und meist hohen optischen Leistungen im Bereich 100 W sowie der potentiell guten Energieeffizienz sind Leuchtdioden (LEDs) geeignete Strahlungsquellen zur Realisierung leistungsstarker kleiner Speziallampen für UV-Härtungsanwendungen, insbesondere im Bereich der grabenfreien Kanalsanierung. Sie ermöglichen die Realisierung kompakter effizienter Lichtquellen, die an die optischen und geometrischen Anforderungen der zu härtenden Materialien angepasst werden können. Zudem benötigen LEDs keine Wartezeit zur Erreichung der vollen Betriebsleistung, da sie schnell schaltbar sind (im Bereich von Millisekunden oder sogar kürzer). Des Weiteren emittieren LEDs in schmalen spektralen Bereichen mit Halbwertsbreiten von typischerweise 10-40 nm, so dass von UV-LEDs und blauen LEDs keine Infrarotstrahlung emittiert wird. Dadurch lässt sich thermisch bedingte Dissoziation der zu vernetzenden Polymere vermeiden.Due to their small geometric size and usually high optical power in the range 100 W and the potentially good energy efficiency LEDs are suitable sources of radiation for the realization of high performance small special lamps for UV curing applications, especially in the field of trenchless sewer rehabilitation. They enable the realization of compact efficient light sources, which can be adapted to the optical and geometric requirements of the materials to be hardened. In addition, LEDs do not require any waiting time to achieve full operational performance, as they can be switched quickly (in the range of milliseconds or even shorter). Furthermore, LEDs emit in narrow spectral ranges with half-widths of typically 10-40 nm, so that no infrared radiation is emitted by UV LEDs and blue LEDs. As a result, thermally induced dissociation of the polymers to be crosslinked can be avoided.
Die Kombination aus dem in der Regel geringen zur Verfügung stehenden Platz für die Lampe einer Härtungsvorrichtung für Kanalsanierungen und der notwendigen hohen Leistungsdichte stellt eine hohe Herausforderung an den Aufbau und die Funktionsweise eines Kühlkörpers einer solchen LED-Lampe dar. Dies gilt insbesondere dann, wenn mehrere dieser LED-Lampen hintereinander in einem Rohr betrieben werden sollen und eine gute Bogengängigkeit in Rohren mit Biegungen gewünscht ist.The combination of the usually small available space for the lamp of a curing device for sewer rehabilitation and the necessary high power density is a great challenge to the structure and operation of a heat sink of such a LED lamp. This is especially true if several These LED lamps are to be operated one behind the other in a tube and a good bow performance in pipes with bends is desired.
Die prinzipielle Nutzung von LEDs für die Kanalsanierung ist in der
Diese LED-Lampen, die als Härtungsvorrichtungen für Kanalsanierungen verwendet werden, mit einer derart hohen Leistungsdichte, benötigen häufig eine möglichst effiziente Kühlung, die eine Verschlechterung ihrer Funktionsweise aufgrund einer Überhitzung ihrer Bauteile verhindert. Dabei tritt bei solchen schlanken, linear aufgebauten LED-Lampen, die beispielsweise in Rohren oder anderen räumlich eng begrenzten Umgebungen eingesetzt werden, stets das Problem auf, dass für zusätzliche Bauteile, die der Kühlung der LED-Lampen beziehungsweise von LED-Modulen der LED-Lampen dienen, kaum Platz ist. Das gleiche Problem tritt auch bei solchen schlanken, linear aufgebauten Härtungsvorrichtungen auf, bei denen die Bauteile in dem schlanken Bereich auf eine Betriebstemperatur erhitzt werden müssen, um eine verlässliche Funktionsweise der Bauteile, wie zum Beispiel von LED-Lasern, zu gewährleisten.Such LED lamps, which are used as channel rehabilitation curing devices with such high power density, often require cooling as efficiently as possible, which prevents them from degrading due to overheating of their components. In such slim, linear LED lamps, which are used, for example, in pipes or other spatially confined environments, always the problem arises that for additional components, the cooling of the LED lamps or LED modules of the LED Lamps serve, barely room is. The same problem also occurs in such slim, linear curing devices, where the components in the slender region must be heated to an operating temperature to ensure reliable operation of the components, such as LED lasers.
Für ein durch photoinitiierte Polymerisation zu härtendes Material werden typische Intensitäten von einigen mW/cm2 bis hin zu einigen 10 W/cm2 benötigt, wodurch sich die zuvor genannten erforderlichen optischen Ausgangsleistungen der LED-Lampen erklären. Da sich die Effizienz und die Lebensdauer von LEDs (Verhältnis aus optischer Ausgangsleistung und der elektrischen Betriebsleistung) antiproportional zur Betriebstemperatur der LEDs verhält, ist eine gute Kühlung der LEDs notwendig.For a material to be cured by photoinitiated polymerization, typical intensities of a few mW / cm 2 to several 10 W / cm 2 are required, which explains the aforementioned required optical output powers of the LED lamps. Since the efficiency and lifetime of LEDs (ratio of optical output power and electrical operating performance) behave inversely proportional to the operating temperature of the LEDs, a good cooling of the LEDs is necessary.
Um die Temperierung, das heißt eine Kühlung oder eine Erwärmung der Bauteile zu erreichen, muss diesen durch den schlanken, schlauchförmigen Aufbau Wärme zugeführt oder von diesen abgeführt werden. Als Medium zum Transport der Wärmeenergie sind hierfür Fluide, wie zum Beispiel Luft oder Wasser, zweckmäßig.In order to achieve the temperature control, that is to say cooling or heating of the components, heat must be supplied to or removed from them by the slim, tubular structure. As a medium for transporting the heat energy for this purpose fluids, such as air or water, appropriate.
Ein Betrieb der Wärmetauscher beziehungsweise Kühlkörper in Serie kann technisch sinnvoll sein, da Vor- und Rücklauf eines zylindrischen Wärmetauschers/Kühlkörpers leicht auf den gegenüberliegenden Stirnseiten angebracht werden können. Das Fluid / das Medium strömt durch den Vorlauf in den Kühlkörper ein, durchströmt diesen in axialer Richtung und verlässt den Kühlkörper auf der gegenüberliegenden Stirnseite durch den Rücklaufanschluss. Der Vorlauf des in der Serie folgenden Kühlkörpers ist dann an den Rücklauf des vorherigen Kühlkörpers angeschlossen und die Serienschaltung derart realisiert.An operation of the heat exchanger or heat sink in series can be technically useful, since flow and return of a cylindrical heat exchanger / heat sink can be easily mounted on the opposite end faces. The fluid / medium flows through the flow into the heat sink, flows through it in the axial direction and leaves the heat sink on the opposite end side through the return port. The flow of the following in the series heat sink is then connected to the return of the previous heat sink and realized the series connection such.
Diese Schaltung bedingt jedoch eine nachteilige, sequenziell ansteigende Vorlauftemperatur der von dem Kühlmedium später durchströmten Wärmetauscher/Kühlkörper und damit eine geringere Effizienz und Lebensdauer dieser Module, insbesondere des Endmoduls, das die höchste Betriebstemperatur aufweist. Eine Erhöhung der Durchflussrate des Kühlmittels ist eine Möglichkeit zur Reduktion dieses Effekts. Dies ist allerdings auch mit einem erhöhten Druckabfall verbunden, dessen Kompensation entweder eine Erhöhung des Betriebsdrucks erfordert, wodurch die Wärmetauscher/Kühlkörper stärker beansprucht werden, oder eine Vergrößerung des Leitungsquerschnitts erfordert, der aufgrund der engen Platzverhältnisse und des höheren resultierenden Gewichts des Systems oft nicht möglich ist.However, this circuit requires a disadvantageous, sequentially increasing flow temperature of the later flowed through by the cooling medium heat exchanger / heat sink and thus a lower efficiency and life of these modules, especially the end module, which has the highest operating temperature. Increasing the flow rate of the coolant is one way to reduce this effect. However, this is also associated with an increased pressure drop, the compensation of which either requires an increase in operating pressure, which makes the heat exchanger / heat sink more stressed, or requires an increase in the line cross-section, which is often not possible due to the limited space and the higher resulting weight of the system is.
Aus der Druckschrift
Nachteilig ist hieran, dass ein flüssiges Fluid, wie zum Beispiel Wasser, nicht eingesetzt werden kann, da das Wasser, wenn es außen mit den LEDs in Berührung käme, diese zerstören könnte. Flüssige Fluide können die Wärme jedoch wesentlich effizienter Aufnehmen als gasförmige Fluide. Zudem erwärmt sich das Fluid beim Durchströmen eines jeden Gerätemoduls, so dass die vorderen LED-Module stärker temperiert, beziehungsweise gekühlt werden als die hinteren LED-Module. Dieses Kühlsystem beruht also auf einer seriellen Schaltung der hintereinander befindlichen Wärmetauscher (serielle Durchströmung fluider Kühlmedien). Dies führt beispielsweise zu unterschiedlich langen Lebensdauern der LEDs in den verschiedenen LED-Modulen.The disadvantage of this is that a liquid fluid, such as water, can not be used because the water, if it came in contact with the outside of the outside, could destroy them. However, liquid fluids can absorb the heat much more efficiently than gaseous fluids. In addition, the fluid heats up when flowing through each device module, so that the front LED modules are more tempered or cooled than the rear LED modules. This cooling system is thus based on a serial circuit of the successive heat exchanger (serial flow fluid cooling media). For example, this leads to different lifetimes of the LEDs in the different LED modules.
Aufgabe der Erfindung ist es also, diese Probleme zu überwinden. Insbesondere soll eine gleichmäßige Temperierung der LED-Lampe oder der LED-Module einer LED-Lampe erreicht werden. Auch sollen flüssige Fluide zur Temperierung einsetzbar sein, ohne dass die LEDs Schaden nehmen können.The object of the invention is therefore to overcome these problems. In particular, a uniform temperature of the LED lamp or the LED modules of an LED lamp should be achieved. Also, liquid fluids for temperature control should be used without the LEDs can be damaged.
Diese Aufgabe wird dadurch gelöst, dass die Vorrichtung eine Ableitung zum Ableiten des Fluids umfasst, wobei
die Zuleitung und die Ableitung über je ein L-Stück an einem ihrer Enden und zusätzlich über wenigstens ein T-Stück in der Zuleitung und wenigstens ein T-Stück in der Ableitung fluiddicht miteinander verbunden sind oder
die Zuleitung und die Ableitung über ein L-Stück am Ende der Zuleitung, das mit einem T-Stück in der Ableitung verbunden ist, und ein L-Stück am Ende der Ableitung, das mit einem T-Stück in der Zuleitung fluiddicht miteinander verbunden sind, oder
die Zuleitung und die Ableitung über ein L-Stück am Ende der Zuleitung, das mit einem T-Stück in der Ableitung verbunden ist, und ein L-Stück am Ende der Ableitung, das mit einem T-Stück in der Zuleitung verbunden ist, und zusätzlich über wenigstens ein T-Stück in der Zuleitung und wenigstens ein T-Stück in der Ableitung fluiddicht miteinander verbunden sind,
so dass das Fluid von den LEDs räumlich getrennt fließt und so dass die Zuleitung und die Ableitung zumindest zwei parallel geschaltete Fluidverbindungen miteinander aufweisen, wobei die Wärmetauscher in den Fluidverbindungen angeordnet sind oder die Wärmetauscher die Fluidverbindungen sind.This object is achieved in that the device comprises a discharge for discharging the fluid, wherein
the supply line and the discharge via one L-piece at one of its ends and in addition via at least one T-piece in the supply line and at least one T-piece in the discharge are fluid-tightly interconnected or
the supply and the discharge via an L-piece at the end of the supply line, which is connected to a tee in the discharge, and a L-piece at the end of the discharge, which are fluid-tightly connected to each other with a tee in the supply line , or
the supply and discharge via an L-piece at the end of the supply line, which is connected to a T-piece in the discharge, and a L-piece at the end of the discharge, which is connected to a tee in the supply line, and additionally are fluid-tightly connected to one another via at least one T-piece in the supply line and at least one T-piece in the discharge,
such that the fluid flows spatially separated from the LEDs and so that the supply line and the discharge line have at least two fluid connections connected in parallel to each other, wherein the heat exchangers are arranged in the fluid connections or the heat exchangers are the fluid connections.
Dabei sind die parallel geschalteten Wärmetauscher gegeneinander verschiebbar, stauchbar und/oder beweglich sind.The parallel-connected heat exchangers are mutually displaceable, compressible and / or movable.
Ferner kann vorgesehen sein, dass die Vorrichtung modular aufgebaut ist und LED-Module umfasst, wobei ein LED-Modul zwei L-Stücke und zumindest ein LED-Modul zwei T-Stücke umfassen oder
zwei LED-Module ein L-Stück und ein T-Stück umfassen und/oder zumindest ein weiteres LED-Modul zwei T-Stücke umfasst,
und wobei die LED-Module zusätzlich eine Fluidverbindung mit einem Wärmetauscher umfassen, wobei die LED-Module über Zuleitungsteile und Ableitungsteile, insbesondere lösbar miteinander verbunden sind, so dass zusätzliche LED-Module leicht austauschbar, entfernbar und zusätzlich einbaubar sind.Furthermore, it can be provided that the device is of modular construction and comprises LED modules, wherein one LED module comprises two L pieces and at least one LED module comprises two T pieces or
two LED modules comprise an L-piece and a T-piece and / or at least one further LED module comprises two T-pieces,
and wherein the LED modules additionally comprise a fluid connection to a heat exchanger, wherein the LED modules are connected to each other via lead parts and discharge parts, in particular detachably, so that additional LED modules are easily replaceable, removable and additionally installable.
Dabei kann vorgesehen sein, dass die Zuleitungsteile und Ableitungsteile, die die LED-Module miteinander verbinden, flexibel, dehnbar und/oder stauchbar sind, insbesondere flexible Kunststoffschläuche und/oder Faltenbalge, vorzugsweise mit Federn sind, so dass die Vorrichtung bogengängig in einem Rohr schleppbar ist.In this case, it can be provided that the supply line parts and discharge parts which connect the LED modules with one another are flexible, expandable and / or compressible, in particular flexible plastic hoses and / or bellows, preferably with springs, so that the device can be dragged in a tube in an arc-like manner is.
Eine Weiterbildung der Vorrichtung sieht vor, dass die LED-Module geometrisch linear hintereinander in Reihe angeordnet sind.A development of the device provides that the LED modules are arranged geometrically linear one behind the other in series.
Es kann auch vorgesehen sein, dass die Ableitung parallel zur Zuleitung angeordnet ist.It can also be provided that the derivative is arranged parallel to the feed line.
Ferner kann vorgesehen sein, dass das Fluid in der Ableitung in Gegenrichtung zur Zuleitung fließt.Furthermore, it can be provided that the fluid flows in the discharge in the opposite direction to the supply line.
Es kann auch vorgesehen sein, dass die Vorrichtung die LED-Lampe oder die LED-Module umfasst.It can also be provided that the device comprises the LED lamp or the LED modules.
Dabei kann ferner vorgesehen sein, dass die LED-Module gleichartig, insbesondere identisch sind.It can also be provided that the LED modules are similar, in particular identical.
Eine Weiterbildung der Vorrichtung sieht vor, dass die LED-Lampe oder die LED-Module eine Härtungsvorrichtung, insbesondere eine Lichtquelle für Kanalsanierungen ist, wobei das Fluid nicht mit dem zu härtenden Material in Verbindung kommt.A development of the device provides that the LED lamp or the LED modules is a curing device, in particular a light source for sewer rehabilitation, wherein the fluid does not come into contact with the material to be hardened.
Auch kann vorgesehen sein, dass jedes LED-Modul zumindest ein Substrat mit zumindest einer LED, vorzugsweise zumindest eine Hochleistungs-LED umfasst, die derart, vorzugsweise ringförmig angeordnet sind, dass die LEDs nach außen, vorzugsweise in alle Richtungen einer Ebene senkrecht zum linearen Aufbau der LED-Lampe oder der LED-Module abstrahlen.It can also be provided that each LED module comprises at least one substrate with at least one LED, preferably at least one high-power LED, which are arranged such, preferably annular, that the LEDs outwardly, preferably in all directions of a plane perpendicular to the linear structure emitting the LED lamp or the LED modules.
Dabei kann vorgesehen sein, dass mehrere LEDs als Chip-on-Board (COB) auf einem Substrat aufgebracht sind.It can be provided that a plurality of LEDs are applied as a chip-on-board (COB) on a substrate.
Die Nutzung von Chip-on-Board (COB) Technologie ermöglicht die Realisierung homogen abstrahlender, intensitätsstarker Lichtquellen mit zylinderförmiger Geometrie und mit hohen optischen Leistungen im Bereich von einigen Watt bis mehrere 100 Watt. Durch die Möglichkeit LEDs mit höherer Leistung einzusetzen, wird eine schnellere Aushärtung zu härtender Rohre und damit eine Beschleunigung der Härtungsverfahren erreicht.The use of chip-on-board (COB) technology enables the realization of homogeneously radiating, high-intensity light sources with cylindrical geometry and with high optical powers in the range of a few watts to several 100 watts. The possibility of using LEDs with higher power results in a faster curing of hardened tubes and thus an acceleration of the hardening process.
Eine Weiterbildung der Erfindung sieht vor, dass jedes LED-Modul eine Anschlusseinheit umfasst, an denen Versorgungsleitungen angeschlossen sind, die die Zuleitung, die Ableitung und elektrische Kabel umfassen, die zumindest teilweise mit den LEDs verbunden sind.A development of the invention provides that each LED module comprises a connection unit to which supply lines are connected, which comprise the supply line, the discharge line and electrical cables which are at least partially connected to the LEDs.
Eine weitere erfindungsgemäße Ausgestaltung sieht vor, dass jedes LED-Modul von einem Gehäuse, insbesondere einem Glas-, Edelstahl- oder Kunststoffgehäuse, umgeben ist.A further embodiment according to the invention provides that each LED module is surrounded by a housing, in particular a glass, stainless steel or plastic housing.
Eine weitere alternative Ausgestaltung der Erfindung sieht vor, dass die Vorrichtung eine Versorgungseinheit umfasst, die einen Fluidregler zur Steuerung der Durchflussgeschwindigkeit und/oder der Temperatur des Fluids durch die Zuleitung und/oder die Ableitung umfasst.A further alternative embodiment of the invention provides that the device comprises a supply unit which comprises a fluid regulator for controlling the flow rate and / or the temperature of the fluid through the supply line and / or the discharge line.
Dabei kann vorgesehen sein, dass die Versorgungseinheit eine LED-Steuerung zur Steuerung der an den LEDs anliegenden Spannung umfasst.It can be provided that the supply unit comprises an LED control for controlling the voltage applied to the LEDs.
Des Weiteren kann vorgesehen sein, dass die Vorrichtung und/oder die LED-Module zumindest einen Sensor umfassen, vorzugsweise einen Temperatursensor, einen Beleuchtungsstärkesensor, einen Stromsensor, und/oder einen Spannungssensor.Furthermore, it can be provided that the device and / or the LED modules comprise at least one sensor, preferably a temperature sensor, an illuminance sensor, a current sensor, and / or a voltage sensor.
Dabei kann es vorteilhaft sein, wenn der oder die Sensoren mit dem Fluidregler und/oder der LED-Steuerung in der Versorgungseinheit verbunden ist oder sind.It may be advantageous if the sensor or sensors is or are connected to the fluid controller and / or the LED controller in the supply unit.
Auch kann dabei vorgesehen sein, dass die elektrischen Kabel der Versorgungsleitung zumindest einen Sensor und/oder eine Antriebsvorrichtung kontaktieren und mit der Versorgungseinheit verbinden.It can also be provided that the electrical cables of the supply line contact at least one sensor and / or a drive device and connect to the supply unit.
Eine weitere Ausgestaltung der Erfindung sieht vor, dass jeder Wärmetauscher und/oder jedes LED-Modul einen zylinderförmigen oder ringförmigen Aufbau mit kreisförmigem oder polygonalem Querschnitt hat.A further embodiment of the invention provides that each heat exchanger and / or each LED module has a cylindrical or annular structure with a circular or polygonal cross-section.
Dabei kann vorgesehen sein, dass zumindest zwei benachbarte Öffnungen für den Zulauf und den Ablauf des Fluids auf der Innenseite und/oder den Seitenflächen der Wärmetauscher vorgesehen sind, die durch eine Trennwand in den Wärmetauschern derart voneinander getrennt sind, dass das Fluid die Wärmetauscher im Wesentlichen im gesamten Umfang durchströmt.It can be provided that at least two adjacent openings for the inlet and the outlet of the fluid on the inside and / or the side surfaces of the heat exchangers are provided, which are separated from each other by a partition wall in the heat exchangers such that the fluid substantially the heat exchanger flows through the entire circumference.
Ferner kann dabei vorgesehen sein, dass sich die Zuleitung und die Ableitung durch die Öffnung der zylinderförmigen oder ringförmigen LED-Module und/oder der zylinderförmigen oder ringförmigen Wärmetauscher erstrecken.Furthermore, it can be provided that the supply line and the discharge line extend through the opening of the cylindrical or annular LED modules and / or the cylindrical or annular heat exchangers.
Allgemein ist es für erfindungsgemäße Vorrichtungen vorteilhaft, wenn die Zuleitungsteile und Ableitungsteile, die die Module miteinander verbinden, flexibel sind, insbesondere flexible Kunststoffschläuche sind, so dass die Vorrichtung bogengängig in einem Rohr schleppbar ist.In general, it is advantageous for devices according to the invention if the supply line parts and discharge parts which connect the modules to one another are flexible, in particular flexible plastic hoses, so that the device can be dragged in an arc in a tube.
Auch kann vorgesehen sein, dass die Wärmetauscher an den Kontaktflächen zu den LEDs oder dem Substrat zumindest bereichsweise aus einem gut wärmeleitenden Material bestehen, insbesondere aus einem Metall, vorzugsweise Kupfer, Aluminium, Messing oder Stahl, und/oder aus einer Keramik, vorzugsweise Al2O3 oder AIN..It can also be provided that the heat exchangers at the contact surfaces to the LEDs or the substrate at least partially made of a good heat conducting material, in particular of a metal, preferably copper, aluminum, brass or steel, and / or of a ceramic, preferably Al 2 O 3 or AIN ..
Eine Weiterbildung der Erfindung sieht vor, dass das Fluid ein Gas, insbesondere Druckluft oder Stickstoff, oder eine Flüssigkeit, insbesondere Wasser ist.A development of the invention provides that the fluid is a gas, in particular compressed air or nitrogen, or a liquid, in particular water.
Auch kann vorgesehen sein, dass jedes LED-Modul für eine optische Leistung zwischen 1 Watt bis 1000 Watt ausgelegt ist.It can also be provided that each LED module is designed for an optical power between 1 watt to 1000 watts.
Es kann ferner vorgesehen sein, dass die LED-Lampe zumindest teilweise, insbesondere die LED-Module, durch das Fluid kühlbar und/oder heizbar sind.It can further be provided that the LED lamp can be cooled and / or heated at least partially, in particular the LED modules, by the fluid.
Es kann auch vorgesehen sein, dass die Zuleitung, die Ableitung, die T-Stücke, die L-Stücke und die Wärmetauscher fluiddicht miteinander verbunden sind.It can also be provided that the supply line, the discharge line, the T-pieces, the L-pieces and the heat exchangers are fluid-tightly interconnected.
Eine vorteilhafte Weiterentwicklung sieht vor, dass Blenden in oder an den Fluidverbindungen angeordnet oder anbringbar sind.An advantageous further development provides that diaphragms are arranged or attachable in or on the fluid connections.
Es kann auch vorgesehen sein, dass der Querschnitt der Fluidverbindungen so eingestellt ist oder Blenden in oder an den Fluidverbindungen derart angeordnet sind, dass alle Wärmetauscher mit einem ähnlichen Volumenstrom des Fluids durchströmt werden, so dass sich die Volumenströme durch die Wärmetauscher maximal um den Faktor 3, vorzugsweise maximal um den Faktor 2 unterscheiden.It can also be provided that the cross-section of the fluid connections is set or diaphragms are arranged in or on the fluid connections such that all heat exchangers are flowed through with a similar volumetric flow of the fluid, so that the volume flows through the heat exchangers differ by a maximum of a factor of 3, preferably a maximum of a factor of 2.
Die Aufgabe wird auch gelöst durch ein Verfahren zum Temperieren, insbesondere Kühlen einer LED-Lampe oder zumindest zweier LED-Module einer LED-Lampe unter Verwendung einer solchen Vorrichtung, wobei ein Fluid durch die Zuleitung den wenigstens zwei Wärmetauschern zugeführt wird, dort ein Wärmeaustausch mit der LED-Lampe oder den LED-Modulen stattfindet und das Fluid anschließend durch die Ableitung abgeführt wird.The object is also achieved by a method for tempering, in particular cooling an LED lamp or at least two LED modules of an LED lamp using such a device, wherein a fluid is supplied through the supply line to the at least two heat exchangers, there heat exchange with the LED lamp or the LED modules takes place and the fluid is then discharged through the drain.
Dabei kann vorgesehen sein, dass das Fluid aus der Ableitung in eine Versorgungseinheit strömt, dort gekühlt oder geheizt wird und anschließend wieder in die Zuleitung eingespeist wird, um die Temperatur des Fluids in der Zuleitung zu regeln, insbesondere in Abhängigkeit von den Signalen wenigstens eines Sensors, und/oder die Strömungsgeschwindigkeit des Fluids geregelt wird, insbesondere in Abhängigkeit von den Signalen wenigstens eines Sensors.It can be provided that the fluid from the discharge flows into a supply unit, where it is cooled or heated and then fed back into the supply line to regulate the temperature of the fluid in the supply line, in particular in response to the signals of at least one sensor , and / or the flow velocity of the fluid is regulated, in particular in dependence on the signals of at least one sensor.
Im Speziellen wird die Aufgabe für ein Verfahren zum Aushärten eines lichthärtenden Rohrs dadurch gelöst, dass eine solche Vorrichtung zur Kühlung einer Härtungsvorrichtung, insbesondere einer Lichtquelle für Kanalsanierungen zusammen mit der Härtungsvorrichtung in das Rohr eingeführt wird und anschließend das Rohr durch das Licht der LEDs ausgehärtet wird, während die Vorrichtung und die Härtungsvorrichtung durch das Rohr bewegt wird und die Härtungsvorrichtung oder die LED-Module der Härtungsvorrichtung durch die Vorrichtung gekühlt werden, insbesondere unter Verwendung eines wie bereits beschriebenen Verfahrens.In particular, the object of a method for curing a light-curing tube is achieved by introducing such a device for cooling a curing device, in particular a light source for sewer rehabilitation together with the curing device in the tube and then the tube is cured by the light of the LEDs while the device and curing device are moved through the tube and the curing device or LED modules of the curing device are cooled by the device, particularly using a method as already described.
Schließlich kann vorgesehen sein, dass die Durchflussgeschwindigkeit des Fluids, die Temperatur des Fluids, die Strahlungsleistung der LEDs und/oder die Bewegungsgeschwindigkeit der Vorrichtung in dem Rohr gesteuert wird, insbesondere in Abhängigkeit von den Messwerten eines Sensors, insbesondere eines Temperatursensors, eines Beleuchtungsstärkesensors, eines Stromsensors und/oder eines Spannungssensors.Finally, it may be provided that the flow rate of the fluid, the temperature of the fluid, the radiation power of the LEDs and / or the speed of movement of the device in the tube is controlled, in particular depending on the measured values of a sensor, in particular a temperature sensor, an illuminance sensor Current sensor and / or a voltage sensor.
Der Erfindung liegt also die überraschende Erkenntnis zu Grunde, dass auch bei geometrisch in Serie angeordneten Wärmetauschern diese in Bezug auf das temperierende Fluid parallel geschaltet werden können und dadurch eine gleich starke Temperierung an den verschiedenen Wärmetauschern erreichbar ist. Alle Gerätemodule, die an die Wärmetauscher angeschlossen sind, werden durch diese Vorrichtung also gleich stark gekühlt oder erwärmt.The invention is therefore based on the surprising finding that even with geometrically arranged in series heat exchangers these can be connected in parallel with respect to the temperature-controlling fluid and thus an equally strong temperature control at the various heat exchangers can be achieved. All device modules that are connected to the heat exchanger are thus cooled or heated equally strong by this device.
Hierdurch werden homogene Temperaturbedingungen in den zu temperierenden Bereichen des Geräts erzielt.As a result, homogeneous temperature conditions are achieved in the areas of the device to be tempered.
Im Gegensatz zur bekannten Serienschaltung von Kühlkörpern/Wärmetauschern bei LED-Lampen für die Kanalsanierung löst die vorliegende Erfindung die auftretenden Problematiken, indem die zylinderförmigen Kühlkörper/Wärmetauscher zwar geometrisch in Serie abgeordnet sind, diese jedoch im Kühlkreislauf parallel verschaltet werden, wobei jeder einzelne Kühlkörper in Umlaufrichtung des Umfangs durchströmt wird. Dies wird dadurch erreicht, indem die Zuleitung und die Ableitung des Kühlkörpers/Wärmetauschers im Inneren des Zylinders angeordnet sind und diese jeweils durch ein T-Stück beziehungsweise ein L-Stück mit einer für alle Kühlkörper/Wärmetauscher gemeinsamen Zuleitung beziehungsweise Ableitung verbunden werden. Diese T-Stücke und L-Stücke lassen sich entweder als einzelne Bauteile realisieren, deren Abzweig jeweils mit der Zuleitung beziehungsweise der Ableitung des Kühlkörpers/Wärmetauschers verbunden wird. Ebenso kann deren Temperatur-Verteilungs-Funktionalität direkt in den Kühlkörper/Wärmetauscher integriert werden, so dass der Kühlkörper/Wärmetauscher auf jeder Stirnseite zwei Vorlauf- und zwei Rücklaufanschlüsse aufweist.In contrast to the known series connection of heat sinks / heat exchangers in LED lamps for sewer rehabilitation, the present invention solves the problems encountered by the cylindrical heat sink / heat exchangers are indeed arranged in series geometrically, but these are connected in parallel in the cooling circuit, each individual heat sink in Circulating direction of the circumference is flowed through. This is achieved by the supply line and the discharge of the heat sink / heat exchanger are arranged in the interior of the cylinder and these are connected by a T-piece or an L-piece with a common for all heat sink / heat exchanger inlet or outlet. These tees and L-pieces can be realized either as individual components whose branch is connected to the supply line or the dissipation of the heat sink / heat exchanger. Likewise, their temperature distribution functionality can be integrated directly into the heat sink / heat exchanger, so that the heat sink / heat exchanger on each end face has two flow and two return connections.
Die Parallelbeschaltung (Kopplung) der Wärmetauscher ermöglicht eine gleiche Vorlauftemperatur der einzelnen Wärmetauscher, obwohl diese geometrisch in Serie angeordnet sind (beispielsweise hintereinander in einem Rohr). In einem abgestimmten System (Leitungswiderstände, Strömungswiderstände der Wärmetauscher und Anschlussstücke sind angepasst) kann ein gleicher Volumenstrom durch alle Wärmetauscher eingestellt werden und somit gleiche Temperierungsbedingungen für alle LED-Module (zum Beispiel gleiche Kühlungsbedingungen für alle LED-Module) realisiert werden.The parallel connection (coupling) of the heat exchangers allows a same flow temperature of the individual heat exchangers, although these are arranged geometrically in series (for example, in a row in a tube). In a coordinated system (line resistance, flow resistance of the heat exchanger and fittings are adapted), an equal volume flow through all heat exchangers can be set and thus the same Temperierungsbedingungen for all LED modules (for example, the same cooling conditions for all LED modules) can be realized.
Dann hat auch der von einem Rückkühler am weitesten entfernte Wärmetauscher der LED-Lampe die gleiche Temperatur, wie der nächstgelegene, anders als in einer Serienschaltung der Wärmetauscher. Durch die Parallelschaltung können gleiche Betriebs- und Ausgangsgrößen für alle gekoppelten LED-Module realisiert werden, die temperaturabhängig sind: Effizienz, Lebensdauer, Emissionswellenlänge und elektrische Aufnahmeleistung.Then, the heat exchanger of the LED lamp farthest from a recooler also has the same temperature as the closest one, unlike in a series connection of the heat exchangers. Due to the parallel connection, the same operating and output variables can be realized for all coupled LED modules that are temperature-dependent: efficiency, service life, emission wavelength and electrical input power.
Darüber hinaus bedingt eine Parallelschaltung einen geringeren Druckabfall im Gesamtsystem als eine Serienschaltung, die insbesondere dann relevant wird, wenn die Strömungswiderstände in den Leitungen klein gegenüber denen der Wärmetauscher werden.In addition, a parallel circuit causes a lower pressure drop in the overall system than a series connection, which becomes particularly relevant when the flow resistance in the lines are small compared to those of the heat exchanger.
Ein weiterer Vorteil wird dadurch erlangt, dass die Länge der einzelnen LED-Module reduziert werden kann, was die Bogengängigkeit der Vorrichtung begünstigt.Another advantage is achieved in that the length of the individual LED modules can be reduced, which favors the Bogengängigkeit the device.
Als Lichtquelle für die Kanalsanierung im Hausanschlussbereich wurde so erfindungsgemäß eine LED-Lampe gefunden, die eine homogene Bestrahlung der Innenwand eines Rohrs mit kleinem, rundem Querschnitt von circa 15 cm und hoher Bestrahlungsstärke von mehreren 100 mW/cm2 bis hin zu einigen W/cm2 ermöglicht. Darüber hinaus ist die LED-Lampe bogengängig und schleppbar in 45° und 90° Bögen.As a light source for the sewer rehabilitation in the service area an LED lamp was inventively found that a homogeneous irradiation of the inner wall of a tube with a small, round cross-section of about 15 cm and high irradiance of several 100 mW / cm 2 to several W / cm 2 allows. In addition, the LED lamp is bendable and trailing in 45 ° and 90 ° bends.
Die notwendige Leistungsdichte bei homogener Beleuchtung der Rohrinnenwand unter Berücksichtigung des geringen Durchmessers und der gefragten Bogengängigkeit wird bei über dreihundert LEDs auf einem als Wärmetauscher fungierenden Kühlkörper mit einem Durchmesser von etwa dem halben Rohrdurchmesser (ungefähr 8 cm) und einer Länge von etwa einem Viertel des Durchmessers (ungefähr 3,5 cm) erreicht.The required power density with homogeneous illumination of the inner wall of the pipe, taking into account the small diameter and the required arc conduction is over three hundred LEDs on a functioning as a heat sink heat sink with a diameter of about half the pipe diameter (about 8 cm) and a length of about one quarter of the diameter (about 3.5 cm).
Um die geforderte Strahlungsdosis für Schleppgeschwindigkeiten von einigen Zentimetern bis einigen zehn Zentimetern pro Minute (über 30 cm/min) zu erreichen, sollten die Module möglichst flexibel aneinander gekoppelt sein.In order to achieve the required radiation dose for towing speeds of a few centimeters to several tens of centimeters per minute (over 30 cm / min), the modules should be coupled together as flexibly as possible.
Die damit verbundenen hohen optischen Leistungen im Bereich von einigen Watt bis mehreren 100 W erfordern aufgrund der notwendigen Kompaktheit der LED-Lampen und der typischen Effizienz von LEDs (typischerweise im Bereich von 1 % bis 50 %, normalerweise 10 % bis 30 %) ebenso kompakte wie effiziente Kühlkörper.The associated high optical powers, ranging from a few watts to several hundred watts, also require compactness due to the required compactness of the LED lamps and the typical efficiency of LEDs (typically in the range of 1% to 50%, usually 10% to 30%) like efficient heatsinks.
Da LEDs auf ebenen Substraten assembliert werden, sind die Substrate auf einem länglichen, möglichst zylinderförmigen Körper mit polygonalem Querschnitt, vorzugsweise dreieckigem, viereckigem, fünfeckigem, sechseckigem oder achteckigem Querschnitt, angeordnet.Since LEDs are assembled on flat substrates, the substrates are arranged on an elongated, preferably cylindrical body with a polygonal cross-section, preferably triangular, quadrangular, pentagonal, hexagonal or octagonal cross-section.
Da meist mehrere LED-Module zur Erreichung der Zieledosis erforderlich sind, können die LED-Module flexibel hintereinander koppelbar sein.Since usually several LED modules to achieve the target dose are required, the LED modules can be flexibly coupled in succession.
Zur Aufrechterhaltung der Effizienz und zum begünstigten Betrieb weiterer temperaturabhängiger Parameter wurde so ein Kühlsystem entwickelt, das den parallelen Betrieb der hintereinander befindlichen LED-Module ermöglicht. Dabei wird der Vor- und der Rücklauf jedes Wärmetauschers durch eine T-Verzweigung oder eine L-Verzweigung an eine für alle Wärmetauscher gemeinsame Zuleitung beziehungsweise Ableitung angeschlossen, die zentral durch die Wärmetauscher geführt werden.To maintain the efficiency and favored operation of other temperature-dependent parameters, a cooling system has been developed that enables the parallel operation of the successive LED modules. Here, the flow and return of each heat exchanger is connected by a T-branch or an L-branch to a common for all heat exchanger inlet or outlet, which are guided centrally through the heat exchanger.
Dadurch kann in einem abgestimmten System jeder Wärmetauscher bei der gleichen Vorlauftemperatur mit einer vergleichbaren Kühlleistung oder Heizleistung betrieben werden und so eine gleiche Effizienz und Lebensdauer über die räumlich hintereinander befindlichen LED-Module aufrechterhalten werden.As a result, in a coordinated system, each heat exchanger can be operated at the same flow temperature with a comparable cooling capacity or heating power, and so an equal efficiency and lifetime can be maintained via the spatially consecutive LED modules.
Die einzelnen Wärmetauscher werden vorzugsweise in Umlaufrichtung durchströmt. Das Fluid, dass für geringe Leistungsanforderungen ein Gas, wie zum Beispiel Druckluft oder Stickstoff, sein kann, ansonsten aber eine Flüssigkeit ist, und bei höheren Leistungen ein Medium mit hoher Wärmekapazität, wie zum Beispiel Wasser ist, strömt dabei dicht an der Außenfläche entlang des Umlaufs des Wärmetauschers entlang, so dass die Substrate mit den LEDs effektiv gekühlt werden.The individual heat exchangers are preferably flowed through in the direction of circulation. The fluid, which may be a gas such as compressed air or nitrogen for low power requirements, but otherwise is a liquid, and at higher powers is a high heat capacity medium, such as water, flows close to the outer surface along the outer surface Circulation of the heat exchanger along, so that the substrates are effectively cooled with the LEDs.
Durch die parallele Beschaltung der räumlich hintereinander angeordnet Wärmetauscher wird zudem der Strömungswiderstand des Fluids/Kühlmediums im System gering gehalten, so dass ein geringerer Durchmesser der Versorgungsleitungen verwendet werden kann, als bei einem seriell aufgebauten Temperierungssystem bei gleichem Volumenstrom des Fluids.Due to the parallel wiring of the spatially successively arranged heat exchangers, the flow resistance of the fluid / cooling medium in the system is kept low, so that a smaller diameter of the supply lines can be used, as in a serially constructed Temperierungssystem with the same volume flow of the fluid.
Ein seriell aufgebautes Kühlsystem kann zwar eine ähnliche Gesamtkühlleistung haben, weist dann aber eine höhere Temperaturdifferenz der Wärmetauscher untereinander auf. Dies ist insbesondere dann der Fall, wenn die Strömungswiderstände der Wärmetauscher vergleichbar oder größer sind als die der Leitungen, die die Wärmetauscher miteinander verbinden. Im umgekehrten Fall kann eine Anpassung der Strömungswiderstände an den einzelnen Wärmetauschern zur Regulation eines gleichmäßigen Volumenstroms notwendig sein, was sich zum Beispiel durch den Einsatz von Blenden realisieren lässt.Although a serially constructed cooling system may have a similar total cooling capacity, but then has a higher temperature difference of the heat exchangers with each other. This is particularly the case when the flow resistance of the heat exchangers are comparable or greater than that of the lines that connect the heat exchangers together. In the opposite case, it may be necessary to adapt the flow resistances at the individual heat exchangers to regulate a uniform volume flow, which can be achieved, for example, by the use of diaphragms.
Die Integration der Anschlussfunktionalität im Zentrum der Wärmetauscher ermöglicht zudem eine kurze Länge der Wärmetauscher, was die Bogengängigkeit des Systems begünstigt.The integration of the connection functionality in the center of the heat exchangers also allows a short length of the heat exchangers, which favors the bowing of the system.
Eine erfindungsgemäße Vorrichtung hat also eine ganze Reihe von Vorteilen.A device according to the invention thus has a whole series of advantages.
Eine parallele Beschaltung zur Kühlmittel- oder Heizmittelversorgung hintereinander befindlicher Wärmetauscher ermöglicht in einem angepassten System den Betrieb aller Wärmetauscher unter gleichen Bedingungen, insbesondere bei gleicher Vorlauftemperatur und bei eingestelltem gleichem Volumenstrom des Fluids durch die einzelnen Wärmetauscher. Für Letzteres können im Fall kleiner Zuleitungen und geringer Strömungswiderstände am Wärmetauscher Maßnahmen zur Anpassung der Volumenstromraten notwendig sein, wie zum Beispiel die besagten regulierenden Blenden. Dieser Fall stellt jedoch einen Grenzfall dar, der meist vermieden werden kann. Im Kontrast zu einer platzsparenden seriellen Versorgung wird bei der aufwändigeren parallelen Versorgung ein sequenzieller Anstieg beziehungsweise Abfall der Vorlauftemperatur in Richtung des vom Vorlauf des Systems räumlich am weitesten entfernten Wärmetauschers vermieden. Diese Eigenschaft ist insbesondere bei Kühlung von LEDs relevant, die stark temperaturabhängige Eigenschaften aufzeigen und deren Effizienz, Emissionswellenlänge, Lebensdauer und Betriebsspannung negativ beeinflusst werden können.A parallel wiring for coolant or Heizmittelversorgung successively befindlicher heat exchanger allows in a customized system, the operation of all heat exchangers under the same conditions, especially at the same flow temperature and set the same volume flow of the fluid through the individual heat exchanger. For the latter, in the case of small supply lines and low flow resistance at the heat exchanger measures to adjust the flow rates may be necessary, such as Example the said regulating apertures. However, this case represents a limiting case that can usually be avoided. In contrast to a space-saving serial supply, a sequential increase or decrease in the flow temperature in the direction of the heat exchanger that is furthest from the flow of the system is avoided in the more complex parallel supply. This property is particularly relevant for the cooling of LEDs, which show strongly temperature-dependent properties and whose efficiency, emission wavelength, service life and operating voltage can be adversely affected.
Bei gleichem Leitungsquerschnitt und vergleichbarer Anschlusstechnik sowie gleichen Wärmetauschern ist der Strömungswiderstand des parallelen Systems geringer als der des seriellen Systems. Dementsprechend können entweder bei gleichem Betriebsdruck Verbindungsleitungen mit geringerer Nennweite zur Realisierung des gleichen Volumenstroms oder bei gleichen Nennweiten der Verbindungsleitungen höhere Volumenströme und somit bessere Kühl- beziehungsweise Heizleistungen bei gleichem Betriebsdruck erreicht werden. Für eine Anpassung der Volumenströme im Grenzfall hoher Leitungswiderstände und geringer Strömungswiderstände in den Wärmetauschern ist dann auch der Einsatz unterschiedlicher Blenden zur Anpassung möglich.With the same line cross-section and comparable connection technology and the same heat exchangers, the flow resistance of the parallel system is lower than that of the serial system. Accordingly, either at the same operating pressure connecting lines with a smaller nominal diameter to achieve the same volume flow or at the same nominal diameter of the connecting lines higher volume flows and thus better cooling or heating outputs can be achieved at the same operating pressure. For an adaptation of the flow rates in the limit of high line resistance and low flow resistance in the heat exchangers and the use of different aperture for adaptation is then possible.
Die Wärmetauscher können so aufgebaut werden, dass das Fluid zirkular und nahezu vollflächig, dicht an der Außenfläche vorbei strömt, so dass eine effiziente Temperierung erreicht wird.The heat exchangers can be constructed in such a way that the fluid flows circularly and almost over the full area, close to the outer surface, so that efficient temperature control is achieved.
Die Leitung im Wärmetauscher kann makroskopisch oder mikroskopisch (beispielsweise eine Mikrokanalkühlung) sein.The conduit in the heat exchanger may be macroscopic or microscopic (eg, a microchannel cooling).
Die Möglichkeit zur Effizienzsteigerung der Kühlleistung kann zur Effizienzsteigerung der LED-Lampe und/oder zur Steigerung der optischen Grenzleistung des Systems genutzt werden, da es eine Temperaturabhängigkeit der LED-Parameter gibt.The ability to increase the efficiency of the cooling power can be used to increase the efficiency of the LED lamp and / or to increase the optical limit power of the system, since there is a temperature dependence of the LED parameters.
Durch paarweise Vertauschung von Vor- und Rücklaufanschluss an den Wärmetauschern jedes zweiten LED-Moduls kann die Umlaufrichtung des Fluids von Modul zu Modul gegenläufig eingestellt werden. Mögliche Gradienten, die bei Erwärmung des Kühlmittels beziehungsweise bei Abkühlung des Heizmittels zwischen Vor- und Rücklauf auftreten und sich zum Beispiel in einem Gradienten der optischen Leistung von LEDs entlang des Umlaufs eines zylindrischen LED-Moduls äußern können, können so alternierend verteilt werden, so dass mögliche Einflüsse derartiger Gradienten bei Schleppprozessen abgedämpft oder gar vermieden werden.By pairwise exchange of flow and return port on the heat exchangers of every other LED module, the direction of circulation of the fluid from module to module can be set in opposite directions. Possible gradients which occur when the coolant is heated or when the heating medium cools between supply and return and can manifest themselves, for example, in a gradient of the optical power of LEDs along the circulation of a cylindrical LED module, can thus be distributed alternately that possible influences of such gradients are damped or even avoided during drag processes.
Die Anordnung der Verbindungselemente im Inneren der zylinderförmigen Wärmetauscher ermöglicht eine kurze Länge des LED-Moduls und somit eine bessere Bogengängigkeit als bei einer Positionierung der Verbindungselemente auf der Stirnseite der Wärmetauscher. Eine Positionierung der Anschlusselemente im Inneren der Wärmetauscher schützt diese vor mechanischen Einwirkungen, die zu Undichtigkeit führen könnten. Der Verbindungsmechanismus der Anschlüsse kann unterschiedlicher Natur sein: T- beziehungsweise L-Stücke verbunden durch Schläuche und Schlauchklemmen, schraubbare Kupplungen mit integrierter T- und L-Funktion oder steckbare Kupplungselemente.The arrangement of the connecting elements in the interior of the cylindrical heat exchanger allows a short length of the LED module and thus a better bow performance than in a positioning of the connecting elements on the end face of the heat exchanger. Positioning the connection elements inside the heat exchangers protects them from mechanical influences that could lead to leaks. The connection mechanism of the connections can be of different nature: T- or L-pieces connected by hoses and hose clamps, screw-type couplings with integrated T and L function or pluggable coupling elements.
Der Einsatz steckbarer Kupplungselemente ermöglicht den Aufbau eines modularen LED-Systems, bei dem jedes Modul austauschbar ist, in dem die Versorgungsmedien (Strom und Kühlmittel) an durch einen verriegelnden oder nicht verriegelnden (eventuell tropffrei trennbaren) Kupplungsmechanismus verbunden und getrennt werden können. Die Verbindung kann auf beiden Seiten des Moduls trenn- und verbindbar sein, damit dieses vollständig austauschbar ist, ohne das komplette System sukzessive (von einer Seite beginnend) zerlegen zu müssen.The use of pluggable coupling elements allows the construction of a modular LED system in which each module is replaceable, in which the supply media (power and coolant) can be connected and disconnected by a locking or non-locking (possibly drip-free) coupling mechanism. The connection may be separable and connectable on both sides of the module so that it is completely interchangeable without having to disassemble the complete system successively (starting from one side).
Mehrere LED-Module sind durch starre oder durch elastische, dehnbare, stauchbare und/oder zusammendrückbare Verbindungen miteinander gekoppelt. Ein möglicher kleinerer Leitungsdurchmesser der Versorgungsleitungen für die Temperierung kann sich positiv auf das Gewicht des Systems sowie auf die Flexibilität des Systems (Bogengängigkeit) auswirken.Several LED modules are coupled together by rigid or elastic, expandable, compressible and / or compressible connections. A possible smaller cable diameter of the supply lines for the temperature control can have a positive effect on the weight of the system as well as on the flexibility of the system (bow flexibility).
Es können mehrere räumlich hintereinander gekoppelte Systeme ebenso zur gleichmäßigen Beheizung wie zur gleichmäßigen Abkühlung zylinderförmiger Körper genutzt werden. Immer wenn vorliegend von Kühlkreisläufen, Kühlleistung, Kühlkörpern und Kühlmitteln gesprochen wird, können dies erfindungsgemäß auch Heizkreisläufe, Heizleistung, Heizkörper und Heizmittel sein. Mit einem Heizkreislauf lassen sich zu härtende Kanäle beispielsweise auch thermisch durch Kontakthitze oder Wärmestrahlung aushärten. Ebenso können Bauteile wie beispielsweise Laser auf eine bestimmte Temperatur erhitzt werden, um eine stabile Leistung und eine exakte Wellenlänge der temperierten Laser zu erreichen.It is also possible to use several systems coupled spatially one behind the other for uniform heating as well as uniform cooling of cylindrical bodies. Whenever this case of cooling circuits, cooling capacity, heat sinks and coolants is spoken, this invention may also be heating circuits, heating power, radiators and heating means. With a heating circuit can be hardened channels, for example, thermally cured by contact heat or heat radiation. Likewise, components such as lasers can be heated to a certain temperature to achieve a stable power and an exact wavelength of the tempered lasers.
Im Folgenden werden Ausführungsbeispiele der Erfindung anhand von fünf schematisch dargestellten Zeichnungen erläutert. Dabei zeigt:
- Figur 1:
- eine schematische Ansicht einer erfindungsgemäßen Vorrichtung zum Temperieren eines Geräts;
- Figur 2:
- eine schematische, perspektivische Ansicht eines Wärmetauschers eines Moduls einer erfindungsgemäßen Vorrichtung;
- Figur 3:
- eine schematische, perspektivische Ansicht einer erfindungsgemäßen Vorrichtung umfassend vier Wärmetauscher nach
Figur 2 ; - Figur 4:
- eine schematische Querschnittansicht einer erfindungsgemäßen Vorrichtung mit einer Vielzahl von LEDs; und
- Figur 5:
- eine schematische Darstellung einer erfindungsgemäßen Vorrichtung mit einem zu temperierenden Gerät.
- FIG. 1:
- a schematic view of a device according to the invention for controlling the temperature of a device;
- FIG. 2:
- a schematic, perspective view of a heat exchanger of a module of a device according to the invention;
- FIG. 3:
- a schematic, perspective view of a device according to the invention comprising four heat exchangers according to
FIG. 2 ; - FIG. 4:
- a schematic cross-sectional view of a device according to the invention with a plurality of LEDs; and
- FIG. 5:
- a schematic representation of a device according to the invention with a device to be tempered.
Alle Rohrstücke (1, 2, 3, 4, 5), das heißt die Zuleitungsteile (1), die Ableitungsteile (2), die T-Stücke (3), die L-Stücke (4) und die Wärmetauscher (5), können mit verschiedenen Methoden miteinander fluiddicht verbunden sein. Die Rohre können entweder fest miteinander verbunden sein, beispielsweise verschweißt, über Pressfittings miteinander verbunden sein, oder die Rohre können lösbar miteinander verbunden sein, beispielsweise ineinandergesteckt oder über Kupplungsstücke oder Schlauchschellen aneinander befestigt oder auch aneinander geflanscht sein.All pipe sections (1, 2, 3, 4, 5), that is the supply line parts (1), the discharge parts (2), the tees (3), the L-pieces (4) and the heat exchanger (5), can be connected to each other fluid-tight with different methods. The tubes can either be fixedly connected to one another, for example welded, connected to one another via press fittings, or the tubes can be releasably connected to one another, for example inserted into one another or fastened to one another via coupling pieces or hose clamps or also flanged together.
Als Material, aus dem die Rohrstücke (1, 2, 3, 4, 5) gefertigt werden, können Metalle, Keramiken oder Kunststoffe verwendet werden.As the material from which the pipe pieces (1, 2, 3, 4, 5) are made, metals, ceramics or plastics can be used.
Besonders zweckmäßig ist, dass die Zuleitungsteile (1) und die Ableitungsteile (2) aus flexiblen Schläuchen oder Faltenbalgen gefertigt sind, während die T-Stücke (3) und die L-Stücke (4) aus einem starren Material, wie festem Kunststoff, einer Keramik oder aus Metall oder einer Kombination hieraus gefertigt sind und die Wärmetauscher aus Metall, vorzugsweise aus Kupfer, und/oder einer Keramik mit einer hohen Wärmeleitfähigkeit bestehen.It is particularly useful that the supply line parts (1) and the discharge parts (2) are made of flexible hoses or bellows, while the T-pieces (3) and the L-pieces (4) made of a rigid material such as solid plastic, a Ceramics or metal or a combination thereof are made and the heat exchanger made of metal, preferably made of copper, and / or a ceramic with a high thermal conductivity.
Eines der Module der Vorrichtung umfasst die beiden L-Stücke (4) und einen Wärmetauscher (5), alle anderen Module der Vorrichtung umfasst je zwei T-Stücke (3) und einen Wärmetauscher (5). Wenn die Module lösbar mit den Zuleitungsteilen (1) und den Ableitungsteilen (2) verbunden sind, kann ein zusätzliches Modul einfach zusammen mit jeweils einem weiteren Zuleitungsteil (1) und einem Ableitungsteil (2) eingefügt werden.One of the modules of the device comprises the two L-pieces (4) and a heat exchanger (5), all other modules of the device comprises two T-pieces (3) and a heat exchanger (5). When the modules are detachably connected to the lead portions (1) and the lead portions (2), an additional module can be easily inserted together with each of another lead portion (1) and a lead portion (2).
An jedem Wärmetauscher (5) ist die zu temperierende LED-Lampe beziehungsweise sind die zu temperierenden LED-Module der LED-Lampe anschließbar, so dass gut wärmeleitende Verbindungen zwischen den Wärmetauschern (5) und der LED-Lampe beziehungsweise den LED-Modulen ausgebildet sind. Die äußeren Abmessungen der Wärmetauscher (5) sind dazu an die Geometrie der LED-Lampe, beziehungsweise der LED-Module angepasst.At each heat exchanger (5) to be tempered LED lamp or are to be tempered LED modules of the LED lamp connected so that good heat conducting connections between the heat exchangers (5) and the LED lamp or the LED modules are formed , The outer dimensions of the heat exchanger (5) are adapted to the geometry of the LED lamp, or the LED modules.
Die Größe der Vorrichtung, insbesondere die Größe der Wärmetauscher (5), der Abstand der T-Stücke (3) und L-Stücke (4) und der Durchmesser der Zuleitungsteile (1) und Ableitungsteile (2) sind an die Größe der LED-Lampe beziehungsweise der LED-Module und an deren Zweck angepasst.The size of the device, in particular the size of the heat exchanger (5), the distance of the tees (3) and L-pieces (4) and the diameter of the supply line parts (1) and discharge parts (2) are to the size of the LED Lamp or the LED modules and adapted to their purpose.
Durch die Rohre (1, 2, 3, 4, 5), die fluiddicht miteinander verbunden sind, wird ein Fluid zum Temperieren der Wärmetauscher (5) und dadurch der LED-Lampe, beziehungsweise der LED-Module geleitet. Die nichtausgefüllten Pfeile zeigen die Strömungsrichtung des Fluids in den Rohren (1, 2, 3, 4, 5) an. Das Fluid ist ein Gas, wie beispielsweise Pressluft oder Stickstoff, oder eine Flüssigkeit, wie beispielsweise Wasser, das Wärmeenergie von den Wärmetauschern (5) weg oder zu den Wärmetauschern (5) hin transportiert.Through the tubes (1, 2, 3, 4, 5), which are fluid-tightly interconnected, a fluid for temperature control of the heat exchanger (5) and thereby the LED lamp, or the LED modules is passed. The unfilled arrows indicate the flow direction of the fluid in the tubes (1, 2, 3, 4, 5). The fluid is a gas, such as compressed air or nitrogen, or a liquid, such as water, that transports heat energy away from the heat exchangers (5) or to the heat exchangers (5).
Die Ableitung (2) kann auch in die entgegengesetzte Richtung vom Zulauf wegführen. Dann wäre die Ableitung (2) umgekehrt montiert, das heißt, dass das L-Stück der Ableitung (2) an das erste T-Stück (in Strömungsrichtung des Fluids) der Zuleitung (1) montiert und das L-Stück der Zuleitung (1) an das T-Stück der Ableitung (2), das in dem in
Das Ringinnere des Wärmetauschers (15) bietet genug Platz zum Anschließen von T-Stücken oder L-Stücken und dem Durchführen von Kabeln und Schläuchen (wie einer Zuleitung und einer Ableitung).The ring interior of the heat exchanger (15) provides enough space to connect T-pieces or L-pieces and to pass through cables and hoses (such as a feed and a drain).
Beide Anschlussstutzen (16) werden mit T-Stücken beziehungsweise L-Stücken an die gemeinsame Zuleitung (21) (Vorlauf) beziehungsweise Ableitung (22) (Rücklauf) eines Temperierungssystems angeschlossen, dass mehrere derartige Wärmetauscher (15) parallel versorgen kann, die räumlich hintereinander angeordnet werden können.Both connecting pieces (16) are connected with T-pieces or L-pieces to the common supply line (21) (supply) or discharge (22) (return) of a Temperierungssystems that several such heat exchanger (15) can supply parallel, spatially behind the other can be arranged.
Die
Wenn auf den Außenflächen (18) LEDs (nicht gezeigt) angebracht sind, wird dadurch eine zylinderförmige LED-Lampe realisiert, mit der, bei geeigneter Auswahl der LEDs, ein Kanal gehärtet, beziehungsweise saniert werden kann. Die Stromzuführungen für die LEDs können ebenfalls durch die Ringöffnung der Wärmetauscher (15) geführt werden.If LEDs (not shown) are mounted on the outer surfaces (18), a cylindrical LED lamp is thereby realized, with which, with suitable selection of the LEDs, a channel can be hardened or rehabilitated. The power supply lines for the LEDs can also be passed through the ring opening of the heat exchanger (15).
Jeder Wärmetauscher (15), der auf allen seinen Außenseiten mit LEDs bestückt ist, ist dann ein LED-Modul. Die Kopplung der LED-Module mit Kabeln zum Anschließen der LED-Module an eine Stromversorgung ergibt eine LED-Lampe.Each heat exchanger (15), which is equipped with LEDs on all its outer sides, is then an LED module. The coupling of the LED modules with cables for connecting the LED modules to a power supply results in an LED lamp.
Die LED-Lampe ist dann im Sinne der vorliegenden Erfindung beispielsweise eine Lichtquelle für die Kanalsanierung im Haushaltsbereich.The LED lamp is then in the context of the present invention, for example, a light source for sewer rehabilitation in the household sector.
Die Geometrie des LED-Moduls (30) ist für eine gleichmäßige Ausleuchtung eines zylinderförmigen Hohlkörpers ausgelegt, so dass dessen Innenwand durch das LED-Modul (30) auch bei geringfügig größerem Durchmesser als dem des LED-Moduls (30) homogen ausgestrahlt wird. Eine derartige Lichtquelle wird zum Beispiel in der Kanalsanierung benötigt. Für Anwendungen mit hohen Anforderungen an die optische Ausgangsleistung, bei denen aufgrund der typischen Effizienzen der LEDs (32) im Bereich von 1% bis 50% erhebliche Wärmemengen durch den Kühlkörper (31) abgeführt werden müssen, sind flüssige Kühlmedien als Fluide notwendig, die den Kühlkörper (31) durchströmen. Im vorliegenden Fall erfolgt dies Zirkular um die Achse des Kühlkörpers (31).The geometry of the LED module (30) is designed for a uniform illumination of a cylindrical hollow body, so that its inner wall is homogeneously emitted by the LED module (30) even at a slightly larger diameter than that of the LED module (30). Such a light source is needed, for example, in sewer rehabilitation. For applications with high demands on the optical output power, where due to the typical efficiencies of the LEDs (32) in the range of 1% to 50% significant amounts of heat through the heat sink (31) must be dissipated, are liquid cooling media necessary as fluids that flow through the heat sink (31). In the present case, this is circular about the axis of the heat sink (31).
Das Umströmen erfolgt dicht an der Oberfläche des Kühlkörpers (31), so dass die darauf montierten Substrate (33) effektiv gekühlt werden.The flow around is close to the surface of the heat sink (31), so that the substrates mounted thereon (33) are effectively cooled.
Der gezeigte Querschnitt zeigt also den Querschnitt eines LED-Moduls (30) einer LED-Lampe umfassend mehrere LED-Module (30) zusammen mit einem Wärmetauschermodul (31) der Kühlvorrichtung, also ein LED-Modul (30) und einen Wärmetauscher (31) im Sinne der vorliegenden Erfindung. Die LED-Lampe kann zusätzlich elektrische Anschlüsse (nicht gezeigt), die zum Betrieb der LEDs (32) notwendig sind, und eine Steuerung (nicht gezeigt), die die LEDs (32) mit Strom versorgt und gegebenenfalls für den Vortrieb des Systems sorgt, umfassen. Die erfindungsgemäße Vorrichtung kann nur das Kühlsystem als auch das Kühlsystem zusammen mit der LED-Lampe sein.The cross section shown thus shows the cross section of an LED module (30) of an LED lamp comprising a plurality of LED modules (30) together with a heat exchanger module (31) of the cooling device, that is an LED module (30) and a heat exchanger (31). in the sense of the present invention. The LED lamp may additionally include electrical connections (not shown) necessary to operate the LEDs (32) and a controller (not shown) which powers the LEDs (32) and optionally provides propulsion of the system. include. The device according to the invention can be only the cooling system and the cooling system together with the LED lamp.
Weiterhin können in den LED-Modulen (41) Sensoren (nicht gezeigt), wie zum Beispiel Temperatur-, Beleuchtungsstärke-, Strom- oder Spannungssensoren integriert sein, die den Betriebsstatus an eine Steuer- und Versorgungseinheit (44) melden, die eine Anpassung der Betriebsbedingungen der LED-Lampe (40) an den aktuellen Zustand ermöglicht. Die Anschlusseinheiten (42) ermöglichen eine modulare Erweiterung mit zusätzlichen LED-Modulen (41), sowie eine Austauschbarkeit für Wartungszwecke. Aus Sicht des Kühlkreislaufs ist die parallele Versorgung der LED-Module (41) mit dem Kühlmedium, insbesondere auch im Sinne der Erweiterbarkeit von Vorteil, da alle Kühlkörper immer mit der gleichen Vorlauftemperatur versorgt werden. Die LED-Module (41) können über starre oder flexible Verbindungselemente gekoppelt werden, so dass sie entweder starr oder flexibel (über einen Schutzschlauch, Metallfedern, Faltenbalge oder ähnliches) aneinandergereiht sind. Dadurch kann die LED-Lampe (40) bogengängig in einem Rohr geschleppt werden. Eine flexible oder starre Versorgungsleitung (43) verbindet die LED-Module (41) mit der Steuer- und Versorgungseinheit (44), die die elektrische Versorgung und die Versorgung mit dem Kühlmedium beinhaltet, sowie eine Kontroll- und Steuereinheit zur gezielten Ansteuerung relevanter Betriebsparameter umfasst.Furthermore, in the LED modules (41) sensors (not shown), such as temperature, illuminance, current or voltage sensors can be integrated, which report the operating status to a control and supply unit (44), an adjustment of the Operating conditions of the LED lamp (40) to the current state allows. The connection units (42) allow a modular extension with additional LED modules (41), as well as a replacement for maintenance purposes. From the point of view of the cooling circuit, the parallel supply of the LED modules (41) with the cooling medium, in particular in the sense of expandability of advantage, since all heat sinks are always supplied with the same flow temperature. The LED modules (41) can be coupled via rigid or flexible connecting elements, so that they are strung together either rigidly or flexibly (via a protective tube, metal springs, bellows or the like). As a result, the LED lamp (40) can be dragged in an arc-like manner in a pipe. A flexible or rigid Supply line (43) connects the LED modules (41) with the control and supply unit (44), which includes the electrical supply and the supply of the cooling medium, as well as a control and control unit for targeted control of relevant operating parameters.
Die erfindungsgemäßen Vorrichtungen sind für die Anwendung in der Kanalsanierung für den Hausanschlussbereich (DN50-DN300, typischerweise DN120-DN160) besonders geeignet. Darüber hinaus ist in diesem Bereich der Einsatz der Technologie auch für größere Rohrdurchmesser denkbar, da das System hohe Leistungen erlaubt und die geometrische Größe hochskalierbar ist. Als Einsatzgebiet kommen also auch Fallrohre von Regenrinnen, Schornsteine oder ähnliches in Betracht. Ebenso könnte eine LED-Lampe entwickelt werden, um Seitenanschlüsse zu sanieren, die durch die Lichthärtung sogenannter (Liner-) Hütchen abgedichtet werden. Weitere Anwendungen wie zum Beispiel in der Beleuchtung rohrartiger Räume oder Hohlkörper sind denkbar.The devices according to the invention are particularly suitable for use in sewer rehabilitation for the domestic service area (DN50-DN300, typically DN120-DN160). In addition, the use of the technology in this area is also conceivable for larger pipe diameters, since the system allows high powers and the geometric size is highly scalable. As a field of application also downpipes of gutters, chimneys or the like come into consideration. Likewise, an LED lamp could be developed to rehabilitate side terminals that are sealed by the light curing of so-called (liner) caps. Other applications such as in the lighting tube-like spaces or hollow bodies are conceivable.
Auch ist die Möglichkeit der Realisierung eines entsprechend aufgebauten Heizsystems möglich, mit dem flexibel gekoppelte Heizelemente (Heizmedium durchströmt Heizkörper) die Wandung von zylindrischen Körpern aufheizen können. Dies kann entweder durch Strahlungsleistung (Wärmestrahlung) erfolgen oder durch direkte Wärmeleitung zwischen Heizkörper und zylindrischem Körper bei Kontakt.Also, the possibility of realizing a correspondingly constructed heating system is possible with the flexibly coupled heating elements (heating medium flows through the radiator) can heat the wall of cylindrical bodies. This can be done either by radiant power (heat radiation) or by direct heat conduction between radiator and cylindrical body in contact.
Die in der voranstehenden Beschreibung, sowie den Ansprüchen, Figuren und Ausführungsbeispielen offenbarten Merkmale der Erfindung können sowohl einzeln, als auch in jeder beliebigen Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungsformen wesentlich sein.The features of the invention disclosed in the foregoing description, as well as the claims, figures and embodiments may be essential both individually and in any combination for the realization of the invention in its various embodiments.
- 1, 211, 21
- Zuleitungsupply
- 2, 222, 22
- Ableitungderivation
- 3, 233, 23
- T-StückTee
- 4, 244, 24
- L-StückL-piece
- 5, 155, 15
- Wärmetauscher / Kühlkörper / HeizörperHeat exchanger / heat sink / radiator
- 1616
- Anschlussstutzenspigot
- 1717
- Keilwedge
- 1818
- Außenflächeouter surface
- 30, 4130, 41
- LED-ModulLED module
- 3131
- Kühlkörperheatsink
- 3232
- LEDLED
- 3333
- Substratsubstratum
- 3434
- Gehäusecasing
- 4040
- LED-LampeLed lamp
- 4242
- Anschlusseinheitconnection unit
- 4343
- Versorgungsleitungsupply line
- 4444
- Steuer- und VersorgungseinheitControl and supply unit
Claims (28)
- An LED lamp (40) having a device for cooling LED modules (30, 41) of the LED lamp (40),
wherein an LED module (30, 41) has a heat exchanger (5, 25, 31),
wherein the device comprises a feed line (1, 21) for feeding a fluid and several heat exchangers (5, 25, 31) connected to the feed line, wherein several LEDs (32) are arranged at each heat exchanger (5, 25, 31) and are coupled to the heat exchangers (5, 25, 31) with respect to thermal transfer, with the result that the LED modules (30, 41) can be cooled by the fluid,
wherein the device comprises a discharge line (2, 22) for discharging the fluid, wherein
the feed line (1, 21) and the discharge line (2, 22) are connected to each other in a fluid-tight manner via an L-piece (4, 24) at one of their ends and, in addition, via at least one T-piece (3, 23) in the feed line (1, 21) and at least one T-piece (3, 23) in the discharge line (2, 22), or
the feed line (1, 21) and the discharge line (2, 22) are connected to each other in a fluid-tight manner via an L-piece (4, 24) at the end of the feed line (1, 21), said L-piece (4, 24) being connected to a T-piece (3, 23) in the discharge line (2, 22), and via an L-piece (4, 24) at the end of the discharge line (2, 22), said L-piece (4, 24) being connected to a T-piece (3, 23) in the feed line (1, 21), or the feed line (1, 21) and the discharge line (2, 22) are connected to each other in a fluid-tight manner via an L-piece (4, 24) at the end of the feed line (1, 21), said L-piece (4, 24) being connected to a T-piece (3, 23) in the discharge line (2, 22), and via an L-piece (4, 24) at the end of the discharge line (2, 22), said L-piece (4, 24) being connected to a T-piece (3, 23) in the feed line (1, 21) and, in addition, via at least one T-piece (3, 23) in the feed line (1, 21) and at least one T-piece (3, 23) in the discharge line (2, 22),
with the result that the fluid flows spatially separated from the LEDs (32) and that the feed line (1, 21) and the discharge line (2, 22) have at least two fluid connections that are connected in parallel to each other, wherein the heat exchangers (5, 25, 31) are arranged in the fluid connections or the heat exchangers (5, 25, 31) are the fluid connections,
wherein the parallel connected heat exchangers (5, 25, 31) are displaceable, compressible and/or movable against each other,
the LED modules (41) are coupled via flexible connecting elements, with the result that the LED modules (41) are flexibly lined up, so that the LED lamp (40) can be dragged in a pipe bend. - The device according to claim 1, characterised in that
the device has a modular structure and comprises LED modules (30, 41), wherein one LED module (30, 41) comprises two L-pieces (4, 24) and at least one LED module (30, 41) comprises two T-pieces (3, 23), or
two LED modules (30, 41) comprise one L-piece (4, 24) and one T-piece (3, 23) and/or at least one further LED module (30, 41) comprises two T-pieces (3, 23),
and wherein the LED modules (30, 41) additionally comprise a fluid connection to a heat exchanger (5, 25, 31), wherein the LED modules (30, 41) are connected to each other via feed line portions (1, 21) and discharge line portions (2, 22), with the result that additional LED modules (30, 41) can be easily exchanged, removed and additionally installed. - The device according to claim 2, characterised in that
the feed line portions (1, 21) and the discharge line portions (2, 22) which connect the LED modules (30, 41) to each other are flexible, stretchable and/or compressible, with the result that the device can be dragged in a pipe bend. - The device according to any one of the preceding claims, characterised in that
the LED modules (30, 41) are arranged one after the other in a row in a geometrically linear manner. - The device according to any one of the preceding claims, characterised in that
the discharge line (2, 22) is arranged in parallel to the feed line (1, 21). - The device according to any one of the preceding claims, characterised in that
the fluid in the discharge line (2, 22) flows in the opposite direction of the feed line (1, 21). - The device according to any one of the preceding claims, characterised in that
the LED lamp (40) or the LED modules (30, 41) is/are a curing device for pipes in the form of a light source for duct renewals, wherein the fluid does not come into contact with the material to be cured. - The device according to any one of the preceding claims, characterised in that
each LED module (30, 41) comprises at least one substrate (33) with at least one LED (32), being arranged such that the LEDs (32) radiate outwards. - The device according to claim 8, characterised in that
several LEDs (32) are applied onto a substrate (33) as a chip-on-board (COB). - The device according to any one of claims 2 to 8, characterised in that
each LED module (30, 41) comprises a connecting unit (42) to which supply lines (43) are connected that comprise the feed line (1, 21), the discharge line (2, 22) and electrical cables which are, at least in part, connected to the LEDs (32). - The device according to any one of the preceding claims, characterised in that
each LED module (30, 41) is surrounded by a housing (34). - The device according to any one of the preceding claims, characterised in that
the device comprises a supply unit (44) which comprises a fluid controller for controlling the flow rate and/or the temperature of the fluid through the feed line (1, 21) and/or the discharge line (2, 22). - The device according to claim 12, characterised in that
the supply unit (44) comprises an LED controller for controlling the voltage applied to the LEDs (32). - The device according to any one of the preceding claims, characterised in that
the device and/or the LED modules (30, 41) comprise at least one sensor. - The device according to claim 14, characterised in that
the sensor or the sensors is or are connected to the fluid controller and/or to the LED controller in the supply unit (44). - The device according to any one of the preceding claims, characterised in that
each heat exchanger (5, 15, 31) and/or each LED module (30, 41) have/has a cylindrical or annular structure with a circular or polygonal cross-section. - The device according to claim 16, characterised in that
at least two neighbouring openings (16) for feeding and discharging the fluid are provided on the inside and/or the lateral surfaces of the heat exchangers (5, 15, 31), said openings (16) being separated from each other by a partition wall (17) in the heat exchangers (5, 15, 31) such that the fluid flows through the heat exchangers (5, 15, 31) essentially in its entirety. - The device according to any one of claims 16 or 17, characterised in that
the feed line (1, 21) and the discharge line (2, 22) extend through the opening of the cylindrical or annular LED modules (30, 41) and/or the cylindrical or annular heat exchangers (5, 15, 31). - The device according to any one of the preceding claims, characterised in that,
at the contact surfaces to the LEDs (32) or the substrate (33), the heat exchangers (5, 15, 31) are composed of a material with good thermal conductivity and/or a ceramic material at least in certain regions. - The device according to any one of the preceding claims, characterised in that
the fluid is a gas or a liquid. - The device according to any one of claims 2 to 20, characterised in that
each LED module (30, 41) is configured for an optical power between 1 watt and 1000 watts. - The device according to any one of the preceding claims, characterised in that
the LED lamp (40) can be cooled and/or heated by the fluid at least partially. - The device according to any one of the preceding claims, characterised in that orifice plates are arranged in or attachable to the fluid connections.
- The device according to any one of the preceding claims, characterised in that
the cross-section of the fluid connections is adjusted or orifice plates in or at the fluid connections are arranged such that a similar volume flow of the fluid flows through all of the heat exchangers (5, 15, 31), with the result that the volume flows through the heat exchangers (5, 15, 31) differ from each other by a factor of no more than 3. - A method for tempering an LED lamp or at least two LED modules of an LED lamp, using a device according to any one of the preceding claims,
characterised in that
a fluid is fed through the feed line and to the at least two heat exchangers, that a heat exchange with the LED lamp or the LED modules takes place there, and that the fluid is subsequently discharged through the discharge line. - The method according to claim 25, characterised in that
the fluid flows out of the discharge line and into a supply unit, is tempered there and is subsequently fed back into the feed line in order to control the temperature of the fluid in the feed line, and/or the flow velocity of the fluid is controlled. - A method for curing a light-curing pipe, characterised in that
a device for cooling a curing device in the form of a light source for duct renewals according to any one of the preceding claims 7 to 24 is introduced into the pipe together with the curing device and subsequently
the pipe is cured by the light of the LEDs while the device and the curing device are moved through the pipe and the curing device or the LED modules of the curing device are cooled by the device. - The method according to claim 27, characterised in that
the flow rate of the fluid, the temperature of the fluid, the radiated power of the LEDs and/or the motion speed of the device in the pipe are controlled as a function of the values measured by a temperature sensor, an illuminance sensor, an electrical current sensor and/or a voltage sensor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19190183.4A EP3594568B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010027533.6A DE102010027533B4 (en) | 2010-07-16 | 2010-07-16 | LED lamp with device for cooling LEDs |
PCT/EP2011/003317 WO2012007115A1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19190183.4A Division EP3594568B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
EP19190183.4A Division-Into EP3594568B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2593716A1 EP2593716A1 (en) | 2013-05-22 |
EP2593716B1 true EP2593716B1 (en) | 2019-09-18 |
Family
ID=44562649
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19190183.4A Active EP3594568B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
EP11741100.9A Active EP2593716B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19190183.4A Active EP3594568B1 (en) | 2010-07-16 | 2011-07-05 | Cooling device for cylindrical, couplable led modules |
Country Status (7)
Country | Link |
---|---|
US (1) | US9360200B2 (en) |
EP (2) | EP3594568B1 (en) |
JP (1) | JP5538626B2 (en) |
CN (1) | CN103221742B (en) |
CA (1) | CA2805029C (en) |
DE (1) | DE102010027533B4 (en) |
WO (1) | WO2012007115A1 (en) |
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RU2681373C2 (en) | 2014-01-10 | 2019-03-06 | Конинклейке Филипс Н.В. | Peripheral devices in wireless docking system |
CN103996664B (en) * | 2014-05-30 | 2016-08-24 | 佐志温控技术(上海)有限公司 | A kind of liquid forced cooling device of counnter attack diode |
US9644831B2 (en) | 2015-01-15 | 2017-05-09 | Heraeus Noblelight America Llc | Intelligent manifold assemblies for a light source, light sources including intelligent manifold assemblies, and methods of operating the same |
CN104776358B (en) * | 2015-04-15 | 2018-01-30 | 东莞市闻誉实业有限公司 | Garden lamp |
JP3203785U (en) * | 2015-06-24 | 2016-04-14 | 研晶光電股▲ふん▼有限公司 | Fluid-cooled lamp |
EP3324099A1 (en) | 2016-11-16 | 2018-05-23 | Heliospectra AB (publ) | Cooled modular lighting arrangement |
CN106764610A (en) * | 2016-12-23 | 2017-05-31 | 台龙电子(昆山)有限公司 | A kind of light-emitting device based on LED light bar |
CN106641883A (en) * | 2016-12-23 | 2017-05-10 | 台龙电子(昆山)有限公司 | Lighting mechanism with built-in LED light bars |
US10634335B2 (en) * | 2017-01-18 | 2020-04-28 | Fujian Sanan Sino-Science Photobiotech Co., Ltd. | Easily formed liquid cooling module of an LED lamp |
WO2018160974A1 (en) * | 2017-03-03 | 2018-09-07 | Insituform Technologies Llc | Curing device for curing a pipe liner |
US10422519B2 (en) * | 2017-04-12 | 2019-09-24 | Dylan Ross | Liquid-cooled LED plant growing systems and methods |
GB201708521D0 (en) * | 2017-05-27 | 2017-07-12 | Gew (Ec) Ltd | LED print curing apparatus |
US11674628B2 (en) | 2017-08-18 | 2023-06-13 | Moray Group, Llc | Method, apparatus and system for lining conduits |
DE102018116311A1 (en) * | 2018-07-05 | 2020-01-09 | Sml Verwaltungs Gmbh | Device with active cooling for controlling a radiation source for curing lining tubes |
DE102018116978A1 (en) * | 2018-07-13 | 2020-01-16 | I.S.T. Innovative Sewer Technologies Gmbh | LED UV system for pipe renovation |
EP3690299B1 (en) * | 2019-02-04 | 2022-11-16 | Picote Solutions Inc. | Device for curing coating substance |
DE102019003299B4 (en) * | 2019-05-10 | 2020-12-10 | Peschl Ultraviolet Gmbh | Lamp module with light emitting diodes and photoreactor |
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- 2011-07-05 EP EP19190183.4A patent/EP3594568B1/en active Active
- 2011-07-05 JP JP2013517100A patent/JP5538626B2/en active Active
- 2011-07-05 EP EP11741100.9A patent/EP2593716B1/en active Active
- 2011-07-05 WO PCT/EP2011/003317 patent/WO2012007115A1/en active Application Filing
- 2011-07-05 CA CA2805029A patent/CA2805029C/en active Active
- 2011-07-05 CN CN201180034880.9A patent/CN103221742B/en active Active
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Also Published As
Publication number | Publication date |
---|---|
CN103221742A (en) | 2013-07-24 |
US9360200B2 (en) | 2016-06-07 |
WO2012007115A1 (en) | 2012-01-19 |
EP3594568B1 (en) | 2021-09-01 |
CA2805029C (en) | 2015-10-20 |
JP2013529836A (en) | 2013-07-22 |
US20130114263A1 (en) | 2013-05-09 |
DE102010027533A1 (en) | 2012-01-19 |
CA2805029A1 (en) | 2012-01-19 |
EP3594568A1 (en) | 2020-01-15 |
JP5538626B2 (en) | 2014-07-02 |
DE102010027533B4 (en) | 2018-08-16 |
EP2593716A1 (en) | 2013-05-22 |
CN103221742B (en) | 2016-10-19 |
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