EP2040012B1 - Hot-air unit and system, with a hot-air unit and at least one coding unit - Google Patents
Hot-air unit and system, with a hot-air unit and at least one coding unit Download PDFInfo
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- EP2040012B1 EP2040012B1 EP08016096.3A EP08016096A EP2040012B1 EP 2040012 B1 EP2040012 B1 EP 2040012B1 EP 08016096 A EP08016096 A EP 08016096A EP 2040012 B1 EP2040012 B1 EP 2040012B1
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- hot air
- coding
- air fan
- coding unit
- heating
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- 238000010438 heat treatment Methods 0.000 claims description 60
- 238000011156 evaluation Methods 0.000 claims description 19
- 239000004020 conductor Substances 0.000 claims description 3
- 239000003570 air Substances 0.000 description 54
- 238000003032 molecular docking Methods 0.000 description 9
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
- F24H3/0423—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between hand-held air guns
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
Description
Die Erfindung betrifft ein als Heißluftgebläse ausgebildetes Elektrowerkzeug gemäß dem Oberbegriff des Anspruchs 1 mit mindestens einem Lüfterrad und mindestens einer elektrischen Heizeinrichtung. Ferner betrifft die Erfindung ein System mit diesem Heißluftgebläse und mindestens einer Kodiereinheit.The invention relates to a trained as a hot air blower power tool according to the preamble of claim 1 with at least one fan and at least one electric heater. Furthermore, the invention relates to a system with this hot air blower and at least one coding unit.
Ein Heißluftgebläse, auch Heißpistole oder Heat Gun genannt, ist ein Elektrowerkzeug, mit dem ein Arbeitsbereich (Werkstück) gezielt erhitzt werden kann. Zu diesem Zweck wird mit mindestens einem Lüfterrad Umgebungsluft angesaugt, mittels der Heizeinrichtung erhitzt und dann durch ein Austrittsrohr auf den Arbeitsbereich ausgeblasen. Lediglich beispielhaft seien folgende gängigen Einsatzgebiete für Heißluftgebläse genannt: Entfernen von Klebefolien, Verschweißen von Kunststoffen, Verformen von Kunststoffen, Entfernung von Lack- oder Farbschichten, insbesondere auf Holz oder Metall, Desinfizieren von Laborgeräten, Trocknen von Gegenständen. Für die unterschiedlichen Einsatzgebiete gibt es unterschiedliche optimale Bearbeitungstemperaturen, die von der Bedienperson, beispielsweise über einen Potentiometer oder bei elektronischen Heißluftgebläsen durch eine entsprechende Bedienung einer Steuereinheit eingestellt werden müssen. Dabei können üblicherweise Temperaturen aus einem Temperaturbereich zwischen etwa 50°C und etwa 650°C oder darüber gewählt werden. In der industriellen Anwendung besteht das Problem, dass der Anwender keine Kenntnis von den optimalen Arbeitstemperaturbereichen hat und meist dazu neigt, das Heißluftgebläse bei voller Heizleistung zu betreiben, was zu einer Beschädigung der zu bearbeitenden Werkstücke führen kann.A hot air blower, also called hot gun or heat gun, is a power tool with which a work area (workpiece) can be heated in a targeted manner. For this purpose, ambient air is sucked in with at least one fan wheel, heated by means of the heating device and then blown out through an outlet pipe onto the working area. For example, the following common applications for hot air blower called: Removal of adhesive films, welding of plastics, molding of plastics, removal of paint or paint layers, especially on wood or metal, disinfecting laboratory equipment, drying of objects. For the different applications, there are different optimal processing temperatures that must be set by the operator, for example via a potentiometer or electronic hot air blowers by a corresponding operation of a control unit. In this case, temperatures can usually be selected from a temperature range between about 50 ° C and about 650 ° C or above. In industrial applications, there is the problem that the user is unaware of the optimum working temperature ranges and tends to close the hot air blower at full heat output operate, which can lead to damage of the workpieces to be machined.
Die
Die
Der Erfindung liegt daher die Aufgabe zugrunde, ein verbessertes Heißluftgebläse (Elektrowerkzeug) vorzuschlagen, bei dem auf einfache Weise für das jeweilige Einsatzgebiet eine optimale Heizleistung einstellbar ist, die von dem Anwender nicht eigenmächtig variierbar ist. Ferner besteht die Aufgabe darin, ein entsprechend verbessertes System mit einem derartigen Heißluftgebläse vorzuschlagen.The invention is therefore based on the object to provide an improved hot air blower (power tool), in which a simple way for the respective application an optimal heating power is adjustable, which is not arbitrarily variable by the user. Furthermore, the object is to propose a correspondingly improved system with such a hot air blower.
Diese Aufgabe wird hinsichtlich des Heißluftgebläses mit den Merkmalen des Anspruchs 1 und hinsichtlich des Systems mit den Merkmalen des Anspruchs 13 gelöst.This object is achieved in terms of the hot air blower with the features of claim 1 and in terms of the system with the features of
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angeben. In den Rahmen der Erfindung fallen auch sämtliche Kombinationen aus zumindest zwei von in der Beschreibung, den Zeichnungen und/oder den Figuren offenbarten Merkmalen.Advantageous developments of the invention are specified in the subclaims. All combinations of at least two features disclosed in the description, the drawings and / or the figures also fall within the scope of the invention.
Der Erfindung liegt der Gedanke zugrunde, das Heißluftgebläse derart auszubilden, dass die Heizleistung der elektrischen Heizeinrichtung und damit die Temperatur der ausgeblasenen Heißluft mittels einer Kodiereinheit im Heißluftgebläse vorgebbar ist, wobei die Kodiereinheit bevorzugt lösbar an das Heißluftgebläse andockbar ist. Der Anwender muss die Einstellung der optimalen Arbeitstemperatur (Heißlufttemperatur) nicht wie im Stand der Technik mittels eines Drehreglers oder mittels Einstelltasten vornehmen, sondern bei einem nach dem Konzept der Erfindung ausgebildeten System mit einem Heißluftgebläse und mehreren, insbesondere unterschiedlich kodierten Kodiereinheiten durch die Auswahl einer für den jeweiligen Anwendungszweck gekennzeichneten Kodiereinheit und die Verbindung dieser Kodiereinheit mit dem Heißluftgebläse. Bevorzugt ist das Heißluftgebläse aus Sicherheitsgründen derart ausgebildet, dass zumindest die elektrische Heizeinrichtung ohne eine an das Heißluftgebläse angedockte Kodiereinheit nicht betreibbar ist. Bei einem nach dem Konzept der Erfindung ausgebildeten Heißluftgebläse ist die Gefahr einer Fehlbedienung und damit die Gefahr einer Beschädigung von zu erhitzenden Werkstücken minimiert. Zudem ist ein derartig ausgebildetes Heißluftgebläse einfach und sicher bedienbar, ohne Kenntnis von der für einen bestimmten Einsatzzweck optimalen Arbeitstemperatur haben zu müssen. Insbesondere kann die durch die Kodiereinheit vorgegebene Heizleistung/Heiztemperatur von dem Anwender nicht eigenmächtig geändert werden.The invention is based on the idea to design the hot air blower such that the heating power of the electric heater and thus the temperature of the blown hot air can be predetermined by means of a coding unit in the hot air blower, wherein the coding unit is preferably detachably docked to the hot air blower. The user does not have to make the setting of the optimum working temperature (hot air temperature) as in the prior art by means of a rotary control or by adjusting buttons, but in a trained according to the concept of the invention system with a hot air blower and several, in particular differently coded coding units by selecting a for Coding unit marked for the respective application and the connection of this coding unit with the hot air blower. Preferably, the hot air blower is off Safety reasons designed such that at least the electric heater is not operable without a docked to the hot air blower coding. In a trained according to the concept of the invention hot air blower, the risk of incorrect operation and thus the risk of damage to be heated workpieces is minimized. In addition, such a trained hot air blower is easy and safe to use, without having to know the optimum for a particular application operating temperature. In particular, the heating power / heating temperature predetermined by the coding unit can not be changed by the user on his own authority.
In Weiterbildung der Erfindung ist mit Vorteil vorgesehen, dass die Kodiereinheit im Wesentlichen nur aus einer in einem Gehäuse angeordneten Leiterbahn besteht. Bevorzugt ist vorzugsweise ausschließlich eine Leiterbahn dabei auf eine Leiterplatte aufgebracht. Eine derartig ausgebildete Kodiereinheit kommt dabei ohne Widerstandselemente aus, wodurch auch eine aufwändige Bestückung der Kodiereinheit mit derartigen elektrischen Bauelementen und alle damit verbundenen Prozessschritte verzichtet werden kann. Eine nach dieser Vorgabe ausgebildete Kodiereinheit weist bevorzugt mindestens zwei voneinander beabstandete Kontaktstellen auf, mit denen die Kodiereinheit mit dem Heißluftgebläse, an einer mit speziellen Andockstellen elektrisch kontaktierbar ist. Die unterschiedliche Kodierung mehrerer unterschiedlicher Kodiereinheiten ist erfindungsgemäß dadurch realisiert werden, dass bei unterschiedlichen Kodiereinheiten zumindest eine Kontaktstelle zum Kontaktieren des Heißluftgebläses an einer unterschiedlichen Position angeordnet ist, sich also die Positionen zumindest einer Kontaktstelle bei mindestens zwei unterschiedlichen Kodiereinheiten nicht entsprechen. Derartig unterschiedlich kodierte Kodiereinheiten kontaktieren das Heißluftgebläse, beispielsweise eine, insbesondere als Auswerteschaltung bzw. Analogeingang einer Steuereinheit ausgebildete, elektrische Schaltung oder Digitaleingänge einer elektrischen Steuereinheit bzw. eines Mikroprozessors des Heißluftgebläses an unterschiedlichen Stellen und können somit bei entsprechender Ausbildung des Heißluftgebläses die, insbesondere maximale, Heizleistung und damit die, insbesondere maximale, Heißlufttemperatur vorgeben bzw. begrenzen. Anders ausgedrückt werden mit unterschiedlich kodierten Kodiereinheiten unterschiedliche Kontaktstellenkombinationen des Heißluftgebläses bzw. einer elektrischen Schaltung des Heißluftgebläses ausgewählt, also unterschiedliche Kontaktstellen elektrisch leitend miteinander verbunden. Es liegt im Rahmen der Erfindung, an der Kodiereinheit ein Leuchtmittel, beispielsweise eine LED, zur Kennzeichnung des Betriebszustandes vorzusehen, wobei mit Vorteil auf ein derartiges Leuchtmittel verzichtet wird.In a development of the invention, it is advantageously provided that the coding unit consists essentially only of a conductor track arranged in a housing. Preferably, preferably only one conductor track is applied to a printed circuit board. Such a coding unit designed in this case does without resistance elements, whereby a complex assembly of the coding unit with such electrical components and all associated process steps can be dispensed with. A coding unit designed according to this specification preferably has at least two contact points spaced apart from one another, with which the coding unit with the hot-air blower can be electrically contacted at a special docking location. The different coding of a plurality of different coding units is inventively realized in that at different coding units at least one contact point for contacting the hot air blower is arranged at a different position, ie the positions of at least one contact point in at least two different coding units not correspond. Such differently coded coding contact the hot air blower, for example, designed as an evaluation or analog input of a control unit, electrical circuit or digital inputs of an electrical control unit or a microprocessor of the hot air blower at different locations and thus with appropriate design of the hot air blower, the particular maximum, Set heating power and thus the, in particular maximum, hot air temperature or limit. In other words, different contact point combinations of the hot air blower or an electrical circuit of the hot air blower are selected with differently coded coding units, that is, different contact points are electrically conductively connected to one another. It is within the scope of the invention to provide a lighting means, for example an LED, for identifying the operating state on the coding unit, with such a lighting means being advantageously dispensed with.
Eine Möglichkeit zur Realisierung zweier unterschiedlicher Heizleistungen mit zwei unterschiedlich kodierten Kodiereinheiten besteht darin, dass innerhalb des Heißluftgebläses mindestens ein in einer elektrischen Versorgungsleitung der Heizeinrichtung angeordneter elektrischer Widerstand vorgesehen ist, der durch eine entsprechende Anordnung der Kontaktstellen, also eine entsprechende Kodierung einer ersten Kodiereinheit überbrückt wird und durch eine entsprechende Kodierung, d.h. Anordnung von Kontaktstellen der zweiten Kodiereinheit nicht überbrückt wird. Durch Überbrücken des Widerstandes mit der ersten Kodiereinheit steht somit eine höhere elektrische Leistung für die Heizeinrichtung zur Verfügung, woraus eine höhere Heizleitung resultiert.One possibility for realizing two different heating powers with two differently coded coding units is that within the hot air blower at least one arranged in an electrical supply line of the heater electrical resistance is provided, which is bridged by a corresponding arrangement of the contact points, ie a corresponding coding of a first coding and by a corresponding coding, ie arrangement of contact points of the second coding unit is not bridged. By bridging the resistor with the first coding unit is thus a higher electrical power for the heater available, resulting in a higher heating line results.
Bevorzugt ist eine Ausführungsform, bei der mehrere in Reihe geschaltete, in einer elektrischen Versorgungsleitung der Heizeinrichtung angeordnete Widerstände vorgesehen sind, wobei j'e nach Kodierung der Kodiereinheit, also je nach Anordnung der Kontaktstellen beispielsweise kein Widerstand, ein Widerstand oder mehrere widerstände überbrückbar sind, wodurch die Heizleistung und damit die Heißlufttemperatur vorgegeben werden kann.Preference is given to an embodiment in which a plurality of resistances arranged in series and arranged in an electrical supply line of the heating device are provided, wherein, after coding of the coding unit, that is, depending on the arrangement of the contact points, no resistance, resistance or multiple resistances can be bridged, whereby the heating power and thus the hot air temperature can be specified.
Bevorzugt handelt es sich bei dem mindestens einen in dem Heißluftgebläse in der elektrischen Versorgungsleitung der Heizeinrichtung angeordneten, mit der Kodiereinheit zusammenwirkenden Widerstand um einen PTC-Widerstand, um eine selbsttätige Heizleistungserhöhung aufgrund eines bei steigenden Gerätetemperaturen sinkenden Widerstands zu vermeiden.Preferably, the at least one arranged in the hot air blower in the electrical supply line of the heater, cooperating with the coding resistor to a PTC resistor to prevent an automatic heating power increase due to a decreasing resistance to device temperatures.
Zusätzlich oder bevorzugt alternativ zu dem Vorsehen von in einer elektrischen Versorgungsleitung der Heizeinrichtung angeordneten, mit der Kodiereinheit zusammenwirkenden Widerständen ist gemäß einer bevorzugter Ausführungsform der Erfindung eine (elektronische) Steuereinheit vorgesehen, mittels der die Kodierung, d.h. insbesondere die Anordnung der Kontaktstellen der Kodiereinheit bestimmbar ist, wobei die Steuereinheit in Abhängigkeit der festgestellten Kodierung der Kodiereinheit die Heißlufttemperatur und damit die Heizleistung regelnd ausgebildet ist.In addition or as an alternative to the provision of resistors arranged in an electrical supply line of the heating device, which cooperates with the coding unit, according to a preferred embodiment of the invention, an (electronic) control unit is provided, by means of which the coding, i. in particular, the arrangement of the contact points of the coding unit can be determined, wherein the control unit is formed in accordance with the detected coding of the coding the hot air temperature and thus the heating power regulating.
Gemäß einer besonders bevorzugten Ausführungsform ist die Steuereinheit zum Feststellen der Kodierung der Kodiereinheit mit einer Auswerteschaltung elektrisch leitend verbunden, wobei die Auswerteschaltung mindestens einen, vorzugsweise mehrere, besonders bevorzugt in Reihe geschaltete Widerstände aufweist, wobei je nach Kodierung der mit der Auswerteschaltung kontaktierten Kodiereinheit beispielsweise kein widerstand, ein Widerstand oder mehrere Widerstände überbrückbar sind, wobei die Kodierung der Kodiereinheit mittels der Steuereinheit, je nach Anordnung der Widerstände durch eine Strom- und/oder Spannungsmessung feststellbar ist. Anders ausgedrückt bildet die Auswerteschaltung einen Analogeingang der Steuereinheit.According to a particularly preferred embodiment, the control unit is for detecting the coding of the coding unit electrically conductively connected to an evaluation circuit, wherein the evaluation circuit has at least one, preferably a plurality of resistors connected in series, wherein, for example, no resistor, one resistor or a plurality of resistors can be bridged, depending on the coding of the contacting with the evaluation circuit coding unit, the coding of Coding unit by means of the control unit, depending on the arrangement of the resistors can be determined by a current and / or voltage measurement. In other words, the evaluation circuit forms an analog input of the control unit.
Besonders bevorzugt ist eine Ausführungsform, bei der mindestens zwei der in Reihe geschalteten Widerstände, vorzugsweise sämtliche in Reihe geschalteten Widerstände unterschiedlich dimensioniert sind. Werden beispielsweise drei unterschiedlich dimensionierte Widerstände und vier Andockstellen vorgesehen, ergeben sich acht unterschiedliche Kodierungsmöglichkeiten. Mit vier widerständen und fünf Andockstellen sind sechzehn unterschiedliche Kodierungen realisierbar.Particularly preferred is an embodiment in which at least two of the series-connected resistors, preferably all series-connected resistors are dimensioned differently. If, for example, three differently dimensioned resistors and four docking points are provided, there are eight different coding possibilities. With four resistors and five docking stations, sixteen different codings can be realized.
Von besonderem Vorteil ist eine Ausführungsform, bei der nicht eine Steuereinheit mit (analoger) Auswerteschaltung vorgesehen wird, sondern bei der die Steuereinheit, insbesondere ein Mikroprozessor, mehrere Digitaleingänge aufweist, wobei in Abhängigkeit der Kodierung der Kodiereinheit unterschiedliche Digitaleingänge miteinander verschaltbar sind. Das durch die Kodierung der Kodiereinheit vorgegebene (binäre) Schaltmuster legt dabei die einzustellende Heizleistung und/oder Heiztemperatur fest. Besonders bevorzugt ist eine Ausführungsform des Heißluftgebläses, bei der die unterschiedliche Verschaltung von digitalen Eingängen der Steuereinrichtung lediglich mit einer mindestens zwei Kontaktstellen aufweisenden elektrischen Leitung der Kodiereinheit erfolgt. In diesem Fall ist die Kodierung also ausschließlich durch die Position der Kontaktstellen der Kodiereinheit vorgegeben.Of particular advantage is an embodiment in which not a control unit with (analog) evaluation circuit is provided, but in which the control unit, in particular a microprocessor, has a plurality of digital inputs, wherein depending on the coding of the coding different digital inputs are interconnected. The predetermined by the coding of the coding (binary) switching pattern specifies the adjusted heating capacity and / or heating temperature. Particularly preferred is an embodiment of the hot air blower, in which the different interconnection of digital Inputs of the control device takes place only with at least two contact points having electrical line of the coding unit. In this case, the coding is thus predetermined exclusively by the position of the contact points of the coding unit.
In Weiterbildung der Erfindung ist mit Vorteil vorgesehen, dass die Heizeinrichtung mehrere Heizsegmente aufweist. In Abhängigkeit der Kodierung der Kodiereinheit werden die Heizsegmente in unterschiedlicher Weise miteinander verschaltet, bzw. es wird zwischen einzelnen oder mehreren Heizsegmenten ausgewählt. So ist es beispielsweise denkbar mit einer ersten Kodiereinheit zwei Heizsegmente in Reihe zu schalten, mit einer zweiten Kodiereinheit mit einer von der Kodierung der ersten Kodiereinheit unterschiedlichen Kodierung lediglich eines der Heizsegmente mit elektrischer Energie zu versorgen, also auszuwählen, und mit einer dritten Kodiereinheit beide Heizsegmente parallel zu schalten. Die Kodierung der Kodiereinheiten wirkt sich somit unmittelbar auf die Auswahl der einzeln oder in Kombination zum Einsatz kommenden Heizsegmente (vorzugsweise Heizwendel) aus.In a development of the invention, it is advantageously provided that the heating device has a plurality of heating segments. Depending on the encoding of the coding unit, the heating segments are interconnected in different ways, or it is selected between single or multiple heating segments. Thus, for example, it is conceivable to connect two heating segments in series with a first coding unit, to supply only one of the heating segments with electrical energy for a second coding unit having a coding different from the coding of the first coding unit, and to select both heating segments with a third coding unit to switch in parallel. The coding of the coding units thus has an immediate effect on the selection of the heating segments used individually or in combination (preferably heating coil).
Von besonderem Vorteil ist eine Ausführungsform, bei der in einem Gehäuse des Heißluftgebläses eine Einstecköffnung für die Kodiereinheit vorgesehen ist, in die die Kodiereinheit zum lösbaren Festlegen an dem Heißluftgebläse zumindest abschnittsweise aufnehmbar ist.Of particular advantage is an embodiment in which a plug-in opening for the coding unit is provided in a housing of the hot-air blower, into which the coding unit for releasably securing to the hot-air blower can be received at least in sections.
Wie zu Anfang erwähnt, führt die Erfindung auch auf ein System mit einem zuvor beschriebenen Heißluftgebläse und mindestens einer lösbar mit dem Heißluftgebläse verbindbaren Kodiereinheit, die durch Zusammenwirken mit dem Heißluftgebläse aufgrund ihrer Kodierung die, insbesondere maximale Heizleistung und/oder Heißlufttemperatur der Heizeinrichtung in dem Heißluftgebläse vorgebend ausgebildet ist.As mentioned at the beginning, the invention also leads to a system with a previously described hot air blower and at least one releasably connectable to the hot air blower coding unit, which cooperates with the hot air blower due to their coding, in particular the maximum heating power and / or hot air temperature of the heating device in the hot air blower is predetermined.
Bevorzugt ist eine Ausführungsform des Systems, bei der für das Heißluftgebläse mindestens zwei unterschiedlich kodierte Kodiereinheiten vorgesehen sind, wobei die Kodierung der jeweiligen Kodiereinheiten bevorzugt durch eine entsprechende Anordnung der Kontaktstellen zur Kontaktierung einer elektrischen Auswerteschaltung bzw. einer Versorgungsleitung der Heizeinrichtung des Heißluftgebläses ausgebildet ist.Preferred is an embodiment of the system in which at least two differently coded coding units are provided for the hot air blower, wherein the coding of the respective coding units is preferably formed by a corresponding arrangement of the contact points for contacting an electrical evaluation circuit or a supply line of the heater of the hot air blower.
Von besonderem Vorteil ist es, wenn die unterschiedlich kodierten Kodiereinheiten mit einer den Anwendungszweck kennzeichnenden Kennzeichnung, wie beispielsweise einer Beschriftung, einem Symbol und/oder einer Farbgebung versehen sind. Zusätzlich oder alternativ kann die mit der Kodiereinheit erzielbare Heizleistung und/oder Heiztemperatur auf der Kodiereinheit angegeben sein.It is particularly advantageous if the differently coded coding units are provided with a marking characterizing the intended use, such as, for example, a lettering, a symbol and / or a coloring. Additionally or alternatively, the heating power and / or heating temperature achievable with the coding unit can be indicated on the coding unit.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnungen. Diese zeigen in:
- Fig. 1:
- eine stark schematisierte Darstellung eines als Handgerät ausgebildeten Heißluftgebläses, mit dem eine Kodiereinheit lösbar verbunden ist,
- Fig. 2:
- eine Darstellung einer Steuereinheit mit Auswerteschaltung sowie Kodiereinheit,
- Fig. 3:
- die Steuereinheit mit Auswerteschaltung gemäß
Fig. 2 jedoch mit einer unterschiedlich kodierten Kodiereinheit, - Fig. 4:
- eine stark schematisierte Darstellung zur alternativen Ausführungsform eines Heißluftgebläses,
- Fig. 5:
- eine Darstellung einer Steuereinheit mit digitalen Ausgängen sowie unterschiedlich Kodierte Kodiereinheiten und
- Fig. 6:
- eine schematische Darstellung einer alternativen Ausführungsform eines Heißluftgebläses mit mehrteiliger Heizeinrichtung.
- Fig. 1:
- a highly schematic representation of a designed as a hand-held hot air blower, with a coding unit is detachably connected,
- Fig. 2:
- a representation of a control unit with evaluation circuit and coding unit,
- 3:
- the control unit with evaluation circuit according to
Fig. 2 but with a differently coded coding unit, - 4:
- a highly schematic representation of the alternative embodiment of a hot air blower,
- Fig. 5:
- a representation of a control unit with digital outputs and differently coded coding units and
- Fig. 6:
- a schematic representation of an alternative embodiment of a hot air blower with multi-part heater.
In den Figuren sind gleiche Bauteile und Bauteile mit der gleichen Funktion mit den gleichen Bezugszeichen gekennzeichnet.In the figures, the same components and components with the same function with the same reference numerals.
In
Der elektrische Antriebsmotor 6 sowie die Heizeinrichtung 4 werden über eine Steuereinheit 7, die signalleitend mit einem Temperatursensor 8 verbunden ist mit elektrischer Energie versorgt, die dem Heißluftgebläse 1 über ein Anschlusskabel 9 zugeführt wird.The electric drive motor 6 and the heating device 4 are supplied via a
Die Steuereinheit 7 ist mit einer Auswerteschaltung 10 verbunden, die mit einer Kodiereinheit 11 zusammenwirkt, die lösbar in einer Einstecköffnung 12 im Gehäuse 2 aufnehmbar ist.The
Wie aus
In
Wie aus
In dem gezeigten Ausführungsbeispiel gemäß
In
Der einzige Unterschied zu dem Ausführungsbeispiel gemäß
In
In
In
Claims (14)
- A hot air fan, designed as an electrical tool, for purposes of heating a workpiece, with at least one fan impeller and at least one electrical heating device,
characterised in
that the hot air fan (1), is designed so as to operate in conjunction with a coding unit (11), with coding implemented in terms of the positioning of contact stations for purposes of making electrical contact with the hot air fan (1); which coding unit can be detachably connected with the hot air fan (1), and can be docked on the hot air fan (1) ; in the hot air fan (1) the heating power and/or the hot air temperature of the heating device (4) is predetermined as a function of the coding, and in that with diversely coded coding units contact can be made with diverse contact station combinations of the hot air fan. - The hot air fan according to claim 1,
characterised by
the provision of a coding unit (11) provided with a coding, which is detachably connected with the hot air fan (1), and the predetermination of the heating power and/or the hot air temperature of the heating device (4) in the hot air fan (1) as a function of the coding. - The hot air fan according to one of claims 1 or 2,
characterised in
that the coding unit (11) as an electrical component has exclusively one or a plurality of electrical conductors, which is/are preferably arranged on and/or in a printed circuit board. - The hot air fan according to any one of the preceding claims,
characterised in
that the hot air fan (1) has at least one electrical resistance (16, 17, 18, 27, 28, 29) that can be bridged across by, and/or connected to, the coding unit (11). - The hot air fan according to any one of the preceding claims,
characterised in
that a plurality of resistances (16, 17, 18, 27, 28, 29) connected in series are provided, wherein, depending upon the coding of the coding unit (11), no resistance, and/or at least one resistance (16, 17, 18, 27, 28, 29), and/or a plurality of the resistances (16, 17, 18, 27, 28, 29) can be bridged across and/or connected to. - The hot air fan according to claim 5,
characterised in
that at least two of the resistances (16, 17, 18, 27, 28, 29), preferably all resistances (16, 17, 18, 27, 28, 29), are of diverse dimensions. - The hot air fan according to one of claims 4 to 6, characterised in
that the at least one resistance (16, 17, 18, 27, 28, 29) is, or comprises, a PTC resistance. - The hot air fan according to any one of the preceding claims,
characterised in
that the hot air fan (1) has a control unit (7), preferably operating in conjunction with a temperature sensor, which is designed so as to adjust, in particular so as to regulate, the heating power and/or the hot air temperature as a function of the coding of the coding unit (11). - The hot air fan according to claim 8,
characterised in
that at least one resistance (16, 17, 18, 27, 28, 29), which can be bridged across by the coding unit (11), preferably a plurality of resistances (16, 17, 18, 27, 28, 29) connected in series, which can be bridged across by the coding unit (11) either individually or in groups, is a component/are components of an evaluation circuit (10) connected with the control unit (7) for purposes of determining the coding of the coding unit (11). - The hot air fan according to claim 8,
characterised in
that the control unit has a plurality of digital inputs for purposes of operating in conjunction with the coding unit (11), wherein the control unit (7), as a function of the number of contact stations with which contact is made by the coding unit (11), is preferably designed such that it recognises the coding of the coding unit (11) and thus the desired heating power and/or hot air temperature. - The hot air fan according to any one of the preceding claims,
characterised in
that the heating device (4) has a plurality of heating segments (36, 37), wherein the heating segments (36, 37) can be electrically connected with one another in diverse ways, as a function of, and/or by means of, the coding of the coding unit (11), and/or at least one of the heating segments (36, 37) can be selected as a function of, and/or by means of, the coding of the coding unit (11). - The hot air fan according to any one of the preceding claims,
characterised in
that at least sections of the coding unit (11) can be accommodated in a plug-in aperture (12), in particular, can be detachably fixed in the latter. - A system with a hot air fan according to any one of the preceding claims, and with at least one coding unit (11), which can be detachably connected with the hot air fan (1); in the hot air fan (1) the heating power and/or the hot air temperature of the heating device (4) is predetermined as a function of its coding, wherein on coding units (11) with diverse codings, diverse means of identification are provided, identifying the respective intended use, and wherein the diverse codings are implemented, preferably exclusively, in terms of contact stations (23, 24) arranged at diverse positions, for purposes of making electrical contact with the hot air fan (1) at diverse positions.
- The system according to claim 13,
characterised in
that at least two coding units (11) are provided, with diverse codings for diverse intended uses of the hot air fan (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202007013430U DE202007013430U1 (en) | 2007-09-24 | 2007-09-24 | Hot air blower and system with a hot air blower and at least one coding unit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2040012A2 EP2040012A2 (en) | 2009-03-25 |
EP2040012A3 EP2040012A3 (en) | 2013-11-13 |
EP2040012B1 true EP2040012B1 (en) | 2014-12-17 |
Family
ID=40134162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08016096.3A Not-in-force EP2040012B1 (en) | 2007-09-24 | 2008-09-12 | Hot-air unit and system, with a hot-air unit and at least one coding unit |
Country Status (3)
Country | Link |
---|---|
US (1) | US8103154B2 (en) |
EP (1) | EP2040012B1 (en) |
DE (1) | DE202007013430U1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7039300B2 (en) * | 2003-12-19 | 2006-05-02 | Carrier Corporation | Identification of electric heater capacity |
CN101924046A (en) * | 2009-06-16 | 2010-12-22 | 飞思卡尔半导体公司 | Method for forming wire bonding in semiconductor device |
DE202011052043U1 (en) * | 2011-11-21 | 2012-02-09 | Leister Technologies Ag | Hot air hand-held device with a digital operating device with universal operating element |
DE202012102212U1 (en) | 2012-06-15 | 2013-09-18 | Steinel Gmbh | Heat Gun |
TWI704961B (en) * | 2017-01-06 | 2020-09-21 | 致伸科技股份有限公司 | Smart heat gun |
DE202017103466U1 (en) | 2017-06-09 | 2017-07-26 | Leister Technologies Ag | Hot air handset with non-contact user communication interface |
CN110887236A (en) * | 2018-09-11 | 2020-03-17 | 深圳市国王科技有限公司 | Battery pack portable numerical control display hot air gun control circuit system and control method thereof |
DE102019100850A1 (en) * | 2019-01-14 | 2020-07-16 | Steinel Gmbh | Hot air gun and method of operating the same |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2120583A (en) * | 1936-10-16 | 1938-06-14 | Paul J Timberlake | Air heater |
US4737616A (en) * | 1986-05-12 | 1988-04-12 | Wen Ying Lee | Multi-function portable electric room heater having a removable heating cartridge |
DE4005475C2 (en) | 1989-02-21 | 2000-08-17 | Papst Licensing Gmbh & Co Kg | Fan heater with at least one PTC resistor |
US5259062A (en) * | 1990-04-24 | 1993-11-02 | Pelko Electric Corporation | Air treatment apparatus utilizing interchangeable cartridges |
US5195164A (en) * | 1990-05-17 | 1993-03-16 | Lambert William S | Electric heater/blowers with selectively-locked output variable heat and blower controls |
DE29816758U1 (en) | 1998-09-18 | 1998-11-26 | Stiebel Eltron Gmbh & Co Kg | Variable speed motor |
US6647203B1 (en) * | 1999-08-06 | 2003-11-11 | American Standard Inc. | Air handler power distribution system |
US6424252B1 (en) * | 2000-12-13 | 2002-07-23 | Maury Adler | Paging system for washers and dryers |
US7318659B2 (en) * | 2004-03-03 | 2008-01-15 | S. C. Johnson & Son, Inc. | Combination white light and colored LED light device with active ingredient emission |
US7096601B2 (en) * | 2003-12-26 | 2006-08-29 | Lg Electronics Inc. | Apparatus and method for controlling washing/drying system |
US20080116274A1 (en) * | 2006-11-22 | 2008-05-22 | Aldridge Jeffrey L | Garment RFID Private Protocol Apparatus |
US20080181590A1 (en) * | 2007-01-30 | 2008-07-31 | Master Appliance Corp. | Heating device and method |
TWM341147U (en) * | 2007-11-12 | 2008-09-21 | Jin-Sheng Yang | Perfume lamp using general series bus |
AU2008327022A1 (en) * | 2007-11-21 | 2009-05-28 | Etira Co., Ltd. | Drying apparatus for pet |
IL191719A (en) * | 2008-05-26 | 2014-09-30 | Ran Amiran | Controlling the operation of an electrically heated water tank |
-
2007
- 2007-09-24 DE DE202007013430U patent/DE202007013430U1/en not_active Expired - Lifetime
-
2008
- 2008-09-12 EP EP08016096.3A patent/EP2040012B1/en not_active Not-in-force
- 2008-09-19 US US12/233,747 patent/US8103154B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE202007013430U1 (en) | 2009-02-12 |
EP2040012A2 (en) | 2009-03-25 |
EP2040012A3 (en) | 2013-11-13 |
US20090080872A1 (en) | 2009-03-26 |
US8103154B2 (en) | 2012-01-24 |
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