EP2107248A2 - Method for integrating a pressure reliever into the housing of a fan - Google Patents
Method for integrating a pressure reliever into the housing of a fan Download PDFInfo
- Publication number
- EP2107248A2 EP2107248A2 EP09002282A EP09002282A EP2107248A2 EP 2107248 A2 EP2107248 A2 EP 2107248A2 EP 09002282 A EP09002282 A EP 09002282A EP 09002282 A EP09002282 A EP 09002282A EP 2107248 A2 EP2107248 A2 EP 2107248A2
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- EP
- European Patent Office
- Prior art keywords
- pressure
- housing
- measuring
- pressure chamber
- pipe
- 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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- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 5
- 238000004512 die casting Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 abstract 1
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 238000004200 deflagration Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/526—Details of the casing section radially opposing blade tips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
- F05D2270/3015—Pressure differential pressure
Definitions
- the invention relates to a method for integrating at least one pressure sensor in the pressure chamber of a housing produced in the casting / die casting method of a blower.
- the pressure sensor is in the form of a projecting into the pressure chamber tube, on which in particular a directed against the direction of flow pressure opening is provided.
- blowers are used in particular for gas flow heaters, which are supplied by the fan with the combustion air.
- the blower is usually a radial fan with a spiral pressure chamber.
- the prior art In order to generate the pressure difference, the prior art often uses a Venturi nozzle or other tubes, which are arranged in the pressure chamber of the housing in front of the outlet.
- Such pressure sensors provide a pressure signal which, depending on the delivered volumetric flow rate of the blower, to a pressure cell of a terminal, e.g. a calorific value device initiates a setting process. For common heating appliances, this signal is provided as an analogue signal. This analog signal is then applied directly to the pressure cell. At too low pressures or flow rates, which may be caused for example by blockages in the chimney (bird's nesting effect, strong throttling of the fan), the fan no longer provides the required amount of air for safe combustion. If then falls below a predetermined lower pressure value, the pressure cell switches off the terminal. In this way, no unburned gas is pumped out of the device, so that no unwanted deflagration or explosions can occur.
- disturbances in the switching behavior can also occur if the control pressure is not sufficiently high due to inaccurate alignment of the pressure sensing devices, e.g. by a rotation of a total pressure sensing device out of the flow axis. This can be done by inaccurate work or in the course of operation.
- the invention has for its object to provide a method for integrating a pressure sensor in the pressure chamber of a housing produced by casting / die casting, which manages without high additional assembly and material costs.
- the invention has for its object to improve a housing so that the integration of a pressure transducer in the pressure chamber of a casting / die casting made housing without high additional assembly and material costs can be done and this pressure sensor reliably always delivers correct values.
- the object is achieved by a method for integrating a device for measuring the pressure in the pressure chamber of a housing produced in the casting / die casting process for a fan with at least one pressure sensor on which in particular a directed against the direction of flow pressure opening is achieved in that the pressure sensor is formed in the casting mold of the housing, the pressure opening is formed on the mold in the area of the pressure transducer, a connection for a signal generator is made on the outside of the housing, and all said elements are formed integrally with the housing.
- the further object is achieved with a housing for a blower, in particular for use in fan-assisted atmospheric gas heaters, with a pressure chamber and a fan arranged therein, and arranged in a side wall means for measuring the pressure in the pressure chamber, achieved in that the device for measuring the pressure in the pressure chamber and the housing wall are made in one piece and in one piece.
- the invention offers significant advantages over the prior art.
- the in situ casting method also makes it possible to use a housing half with cast-on pressure sensors without further reworking at the pitot pressure opening, whereby a large cost savings is achieved.
- the storage of such probes, as used in the prior art completely eliminated.
- the pressure sensor is designed as a dynamic pressure pipe which extends into the pressure chamber and on the outside of the housing wall a pipe socket for attaching a hose connection with a pressure cell wherein two mutually oppositely movable slides are used in the mold for the tube interior.
- long pipe socket can be formed to run the pipe socket sufficiently long even with large enclosures without casting difficulties, so that the pitot tube opening can always be placed in the place of greatest efficiency, on the other hand, on the outside of the housing of the connecting piece for attachable cable also be sufficiently dimensioned so that a plugged hose can be securely attached.
- the device for measuring the pressure may have at least one dynamic pressure pipe for measuring the total pressure P, which projects into the pressure chamber and is in flow communication with a pressure measuring cell.
- the dynamic pressure pipe consists of a straight piece of pipe, which is arranged substantially at right angles to the housing wall.
- a further advantageous embodiment is the fact that the pipe section is equipped at the free end with an obliquely arranged pressure opening.
- the device for measuring the pressure has at least one further pressure measuring point in the form of a differential pressure transducer, which is also in flow communication with the pressure measuring cell.
- the housing may be designed such that the differential pressure transducer has a ramp rising on the housing wall in the flow direction, behind which a differential pressure opening is formed.
- FIG. 1 is a perspective view of a blower 1 according to the prior art shown.
- the illustration gives a view through the outlet opening in the pressure chamber 3 in the housing 2 of the blower 1 again.
- a pressure pickup 4 can be seen in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 in the pressure chamber 3 is a pressure pickup 4 can be seen.
- the pressure pickup assembly 4 is formed as Venturi 10 and fixed with a screw 11 to the wall 2 'of the housing 2.
- two ports 12 ', 12 are provided which are in fluid communication with respective ports disposed on the venturi 12. The passage of these ports 12', 12" through the wall 2 'of the housing 2 requires an additional seal.
- Fig. 2 shows a perspective view of an embodiment of a blower 1 according to the invention with the lower housing wall removed, whereby the view is free on the interior of the housing 2, a fan 9 and a pressure chamber 3.
- a device for measuring the pressure in the pressure chamber 3 is formed, which is formed in the illustrated embodiment as a tubular pressure-receiving device 4.
- the Druckêtan extract 4 consists of a dynamic pressure tube 5 with obliquely to the tube axis extending pitot tube pressure port 5 'and a Differenzdruckaufillon 6. Both the dynamic pressure tube 5 and the Differenzdruckaufsacrificing 6 are cast as a pipe socket in situ with the housing half 2' in a casting.
- the respective pipe socket of the dynamic pressure tube 5 and the Differenzdruckaufillons 6 with respect to the outlet air flow from the fan for a distance A axially behind the other and radially offset from one another laterally to each other, wherein the distance A and the offset D are sufficiently large to from the Differential pressure sensor 6 generated disturbances not to reach the pitot tube pressure port 5 'of the dynamic pressure pipe 5.
- Fig. 2a is a view of a section 2a-2a in FIG Fig. 2 shown.
- the dynamic pressure pipe 5 is formed in this embodiment as a straight piece of pipe and protrudes to about half of the pressure chamber width in the pressure chamber 3 inside.
- the pipe section of the differential pressure sensor 6 with the differential pressure opening 7 formed thereon is shorter and extends approximately one third of the pressure chamber width between the housing walls into the pressure chamber 3.
- the differential pressure opening 7 may occupy a slightly inclined in the flow direction backward position, so that caused by the air flow, a negative pressure and thus a greater spread in the differential pressure is achieved.
- the tube channels 17 and 20 for the dynamic pressure tube 5 and the Differenzdrucketzillon 6 are not generated in the illustrated embodiment, not by a single conical slide, but by two abutting slide, which each have the outer channel 18 and inner channel 19 of the dynamic pressure tube 5 and the outer channel 21st and form the inner channel 22 of the Differenzteiletzillons 6.
- At its abutment surface forms a partition wall 13 and 14, which can be removed after casting.
- the respective slide are formed so that a partition does not arise.
- Fig. 3 shows a perspective view of the embodiment Fig. 2 When the fan is closed 1 with a plan view of the outlet opening in the pressure chamber 3. It can be seen the different height of the projecting into the pressure chamber 3 tubes of the Druckabêtan extract 4 as well as the radial lateral distance of the two pipe sockets.
- the Fig. 4a and 4b each show a detailed representation of a further embodiment of arrangements of the differential pressure sensor 6 on the housing wall 2 '.
- the in Fig. 4a represented Differenzdruckauf choir 6 consists of a simple opening, preferably with a circular cross-section in the housing wall 2.
- On the outside of the pipe socket 16 projects outwardly to provide a flow connection to the pressure cell.
- Such an embodiment has the advantage that only one slide for the pipe channel 18 is required.
- a ramp 8 is formed in the region in front of the differential pressure port 7 to generate a negative pressure area behind the ramp 8.
- a variant of the leadership of the pipe channel is indicated by the reference numeral 20 '. Such a variant also avoids a double slide design for the tube channel 20, since it runs in a straight line and also offers the advantage of the ramp effect for the air flow.
- the invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants are conceivable, which of the illustrated solution even with fundamentally different Designs makes use.
- the pressure pickup 5 it is also possible to form the pressure pickup 5 as a protrusion projecting on the wall, at the front side of which the pitot tube pressure opening 5 'is formed on an inclined surface.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Integration mindestens eines Druckabnehmers in den Druckraum eines im Gieß/Druckgieß-Verfahren hergestellten Gehäuses eines Gebläses. Der Druckabnehmer ist in Form eines in den Druckraum hineinragenden Rohrs ausgebildet, an dem insbesondere eine gegen die Anströmrichtung ausgerichtete Drucköffnung vorgesehen ist.The invention relates to a method for integrating at least one pressure sensor in the pressure chamber of a housing produced in the casting / die casting method of a blower. The pressure sensor is in the form of a projecting into the pressure chamber tube, on which in particular a directed against the direction of flow pressure opening is provided.
Derartige Gebläse werden insbesondere für Gasdurchlauferhitzer eingesetzt, die durch das Gebläse mit der Verbrennungsluft versorgt werden. Das Gebläse ist in der Regel ein Radial-Lüfter mit einem spiralförmigen Druckraum. Man verwendet den durch das Gebläse bereitgestellten Druck zum Betätigen eines Gasventils. Hierbei ist es von Vorteil, wenn ein möglichst großer Druckwert erzeugt werden kann. Dies kann man dadurch erreichen, dass man einen großen Differenzdruck p = pgesamt - pSTAT im Druckraum des Gebläses abgreift.Such blowers are used in particular for gas flow heaters, which are supplied by the fan with the combustion air. The blower is usually a radial fan with a spiral pressure chamber. The pressure provided by the blower is used to actuate a gas valve. It is advantageous if the largest possible pressure value can be generated. This can be achieved by taking a large differential pressure p = p total - p STAT in the pressure chamber of the blower.
Um die Druckdifferenz zu erzeugen, verwendet man im Stand der Technik häufig eine Venturi-Düse oder sonstige Rohre, die im Druckraum des Gehäuses vor dem Ausgang angeordnet sind.In order to generate the pressure difference, the prior art often uses a Venturi nozzle or other tubes, which are arranged in the pressure chamber of the housing in front of the outlet.
Das Anbringen einer Venturidüse, einer Pitot-Sonde oder eines sonstigen geeigneten Röhrchens am Gehäuse des Gebläses bedeutet jedoch einen zusätzlichen Montageaufwand und muss mit großer Genauigkeit durchgeführt werden, um eine möglichst große Druckdifferenz abgreifen zu können.However, attaching a Venturi nozzle, a Pitot probe or any other suitable tube on the housing of the blower means an additional installation effort and must be carried out with great accuracy in order to tap the largest possible pressure difference can.
Derartige Druckabnehmer liefern ein Drucksignal, das, abhängig vom geförderten Volumenstrom des Gebläses, an einer Druckmessdose eines Endgeräts, z.B. eines Heizwertgeräts einen Stellvorgang initiiert. Bei den gängigen Heizwertgeräten wird dieses Signal als Analogsignal bereitgestellt. Dieses Analogsignal liegt dann unmittelbar an der Druckmessdose an. Bei zu geringen Drücken bzw. Volumenströmen, die beispielsweise durch Verstopfungen im Kamin (Vogelnesteffekt, starke Drosselung des Lüfters) hervorgerufen sein können, liefert das Gebläse nicht mehr die erforderliche Luftmenge für eine sichere Verbrennung. Wenn dann ein vorbestimmter unterer Druckwert unterschritten wird, schaltet die Druckmessdose das Endgerät ab. Auf diese Weise wird kein unverbranntes Gas aus dem Gerät gefördert, so dass keine unerwünschten Verpuffungen oder Explosionen auftreten können.Such pressure sensors provide a pressure signal which, depending on the delivered volumetric flow rate of the blower, to a pressure cell of a terminal, e.g. a calorific value device initiates a setting process. For common heating appliances, this signal is provided as an analogue signal. This analog signal is then applied directly to the pressure cell. At too low pressures or flow rates, which may be caused for example by blockages in the chimney (bird's nesting effect, strong throttling of the fan), the fan no longer provides the required amount of air for safe combustion. If then falls below a predetermined lower pressure value, the pressure cell switches off the terminal. In this way, no unburned gas is pumped out of the device, so that no unwanted deflagration or explosions can occur.
Störungen im Schaltverhalten können jedoch auch auftreten, wenn der Steuerdruck wegen ungenauer Ausrichtung der Druckerfassungsvorrichtungen nicht hinreichend groß ist, z.B. durch eine Verdrehung eines den Gesamtdruck erfassenden Geräts aus der Strömungsachse heraus. Dies kann durch ungenaues Arbeiten oder auch im Laufe des Betriebs geschehen.However, disturbances in the switching behavior can also occur if the control pressure is not sufficiently high due to inaccurate alignment of the pressure sensing devices, e.g. by a rotation of a total pressure sensing device out of the flow axis. This can be done by inaccurate work or in the course of operation.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Integration eines Druckabnehmers in den Druckraum eines im Gieß-/Druckgießverfahren hergestellten Gehäuses anzugeben, das ohne hohen zusätzlichen Montage- und Materialaufwand auskommt.The invention has for its object to provide a method for integrating a pressure sensor in the pressure chamber of a housing produced by casting / die casting, which manages without high additional assembly and material costs.
Des weiteren liegt der Erfindung die Aufgabe zugrunde, ein Gehäuse so zu verbessern, dass die Integration eines Druckaufnehmers in den Druckraum eines im Gieß-/Druckgießverfahren hergestellten Gehäuses ohne hohen zusätzlichen Montage- und Materialaufwand erfolgen kann und dieser Druckabnehmer zuverlässig stets korrekte Werte liefert.Furthermore, the invention has for its object to improve a housing so that the integration of a pressure transducer in the pressure chamber of a casting / die casting made housing without high additional assembly and material costs can be done and this pressure sensor reliably always delivers correct values.
Die Aufgabe wird erfindungsgemäß durch ein Verfahren zur Integration einer Einrichtung zur Messung des Drucks in dem Druckraum eines im Gieß-/Druckgieß-Verfahren hergestellten Gehäuses für ein Gebläse mit mindestens einem Druckabnehmer, an dem insbesondere eine gegen die Anströmrichtung ausgerichtete Drucköffnung ausgebildet ist, dadurch gelöst, dass der Druckabnehmer in der Gieß-Form des Gehäuses angeformt ist, die Drucköffnung an der Form im Bereich des Druckabnehmers ausgebildet ist, an der Gehäuseaußenseite ein Anschluss für einen Signalgeber ausgeführt ist, und alle genannten Elemente einstückig mit dem Gehäuse ausgebildet sind.The object is achieved by a method for integrating a device for measuring the pressure in the pressure chamber of a housing produced in the casting / die casting process for a fan with at least one pressure sensor on which in particular a directed against the direction of flow pressure opening is achieved in that the pressure sensor is formed in the casting mold of the housing, the pressure opening is formed on the mold in the area of the pressure transducer, a connection for a signal generator is made on the outside of the housing, and all said elements are formed integrally with the housing.
Die weitere Aufgabe wird bei einem Gehäuse für ein Gebläse, insbesondere zum Einsatz bei Ventilator unterstützten atmosphärischen Gasheizgeräten, mit einem Druckraum und einem darin angeordneten Lüfterrad, und mit einer in einer Seitenwand angeordneten Einrichtung zur Messung des Drucks im Druckraum, dadurch gelöst, dass die Einrichtung zur Messung des Drucks im Druckraum und die Gehäusewand miteinander einstückig und in einem Guß hergestellt sind.The further object is achieved with a housing for a blower, in particular for use in fan-assisted atmospheric gas heaters, with a pressure chamber and a fan arranged therein, and arranged in a side wall means for measuring the pressure in the pressure chamber, achieved in that the device for measuring the pressure in the pressure chamber and the housing wall are made in one piece and in one piece.
Die Erfindung bietet wesentliche Vorteile gegenüber dem Stand der Technik. Durch die erfindungsgemäße Ausgestaltungen entfällt jegliche zusätzliche Maßnahme, die erforderlich wäre, um die genaue Ausrichtung der Drucköffnung zur Anströmrichtung sicherzustellen. Darüber hinaus entfällt das Befestigen von jeglichen Einzelelementen, wie es beim Stand der Technik erforderlich ist, um den Druckabnehmer auszubilden. Die in situ-Gießweise ermöglicht es darüber hinaus, eine Gehäusehälfte mit angegossenen Druckabnehmern ohne weitere Nachbearbeiten an der Staurohrdrucköffnung einzusetzen, wodurch eine große Kostenersparnis erzielt wird. Schließlich kann die Lagerhaltung für solche Sonden, wie sie beim Stand der Technik verwendet werden, vollständig entfallen.The invention offers significant advantages over the prior art. By the embodiments according to the invention eliminates any additional action that would be required to ensure the exact alignment of the pressure opening to the direction of flow. In addition, eliminating the attachment of any individual elements, as required in the prior art, to form the print taker. The in situ casting method also makes it possible to use a housing half with cast-on pressure sensors without further reworking at the pitot pressure opening, whereby a large cost savings is achieved. Finally, the storage of such probes, as used in the prior art, completely eliminated.
Von Vorteil ist, dass der Druckabnehmer als ein Staudruck-Rohr ausgebildet ist, das sich in den Druckraum erstreckt und auf der Außenseite der Gehäusewand einen Rohrstutzen zum Aufstecken einer Schlauchverbindung mit einer Druckmessdose aufweist, wobei in der Form für das Rohrinnere zwei einander entgegengesetzt bewegbare Schieber verwendet werden. Hierdurch können lange Rohrstutzen ausgebildet werden, um zum einen die Rohrstutzen auch bei großen Gehäusen ohne gußtechnische Schwierigkeiten hinreichend lang auszuführen, so dass die Staurohröffnung stets an dem Ort der größten Effizienz plaziert werden kann, zum anderen kann an der Gehäuseaußenseite der Anschlußstutzen für eine aufsteckbare Leitung ebenfalls ausreichend dimensioniert werden, damit ein aufgesteckter Schlauch sicher befestigt werden kann.It is advantageous that the pressure sensor is designed as a dynamic pressure pipe which extends into the pressure chamber and on the outside of the housing wall a pipe socket for attaching a hose connection with a pressure cell wherein two mutually oppositely movable slides are used in the mold for the tube interior. In this way, long pipe socket can be formed to run the pipe socket sufficiently long even with large enclosures without casting difficulties, so that the pitot tube opening can always be placed in the place of greatest efficiency, on the other hand, on the outside of the housing of the connecting piece for attachable cable also be sufficiently dimensioned so that a plugged hose can be securely attached.
Mit Vorteil kann die Einrichtung zur Messung des Drucks mindestens ein Staudruck-Rohr zur Messung des Drucks Pgesamt aufweisen, das in den Druckraum hineinragt und mit einer Druckmessdose in Strömungsverbindung steht.Advantageously, the device for measuring the pressure may have at least one dynamic pressure pipe for measuring the total pressure P, which projects into the pressure chamber and is in flow communication with a pressure measuring cell.
Dabei ist es günstig, wenn das Staudruck-Rohr aus einem geraden Rohrstück besteht, das im Wesentlichen im rechten Winkel an der Gehäusewand angeordnet ist.It is advantageous if the dynamic pressure pipe consists of a straight piece of pipe, which is arranged substantially at right angles to the housing wall.
Eine weitere vorteilhafte Ausbildung ist darin zu sehen, dass das Rohrstück am freien Ende mit einer schräg angeordneten Drucköffnung ausgestattet ist.A further advantageous embodiment is the fact that the pipe section is equipped at the free end with an obliquely arranged pressure opening.
Günstig ist es, wenn in dem Gehäuse die Einrichtung zur Messung des Drucks mindestens eine weitere Druckmessstelle in Form eines Differenzdruckaufnehmer aufweist, die ebenfalls mit der Druckmessdose in Strömungsverbindung steht.It is advantageous if in the housing the device for measuring the pressure has at least one further pressure measuring point in the form of a differential pressure transducer, which is also in flow communication with the pressure measuring cell.
Dabei ist es vorteilhaft, wenn das Staudruck-Rohr und der Differenzdruckaufnehmer sowohl in Strömungsrichtung als auch in radialer Richtung einen Abstand voneinander aufweisen und der Differenzdruckaufnehmer ein ebenfalls im Wesentlichen senkrecht in den Druckraum ragendes Rohr aufweist.It is advantageous if the dynamic pressure pipe and the Differenzdruckaufnehmer both in the flow direction and in the radial direction at a distance from each other and the Differenzdruckaufnehmer also has a substantially vertically projecting into the pressure chamber tube.
Mit besonderem Vorteil kann bei einem anderen Ausführungsbeispiel das Gehäuse so gestaltet sein, dass der Differenzdruckaufnehmer eine an der Gehäusewand in Strömungsrichtung ansteigende Rampe aufweist, hinter der eine Differenzdrucköffnung ausgebildet ist.With particular advantage, in another embodiment, the housing may be designed such that the differential pressure transducer has a ramp rising on the housing wall in the flow direction, behind which a differential pressure opening is formed.
Im Folgenden wird zunächst unter Bezugnahme auf
Es zeigen:
-
Fig. 1 eine perspektivische Ansicht eines Gebläses nach dem Stand der Technik von vorne durch die Austrittsöffnung in den Druckraum mit Venturidüse, -
Fig. 2 eine perspektivische Darstellung eines erfindungsgemäßen geöffneten Gebläses mit Druckraum und Druckabnehmern und Differenzdruckaufnehmer, -
Fig. 2a eine Darstellung des Schnitts 2a - 2a inFig. 2 , -
Fig. 3 eine Darstellung des Ausführungsbeispiels ausFig. 2 bei einem geschlossenen Gebläse mit einer perspektivischen Draufsicht auf die Austrittsöffnung aus dem Druckraum, und -
Fig. 4a, 4b zwei Detaildarstellungen weiterer Ausführungsbeispiele von Anordnungen der Differenzdruckaufnehmer an der Gehäusewand.
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Fig. 1 a perspective view of a blower according to the prior art from the front through the outlet opening in the pressure chamber with venturi, -
Fig. 2 a perspective view of an open blower according to the invention with pressure chamber and pressure sensors and differential pressure transducer, -
Fig. 2a a representation of thesection 2a - 2a inFig. 2 . -
Fig. 3 an illustration of the embodimentFig. 2 in a closed fan with a perspective plan view of the outlet opening from the pressure chamber, and -
Fig. 4a, 4b two detailed views of further embodiments of arrangements of the differential pressure on the housing wall.
In
Die an dem Staudruckrohr 5 angeordnete schräg zur Rohrachse verlaufende und gegen die Strömung gerichtete Staurohrdrucköffnung 5' ist bereits in der Gießform ausgebildet, so dass eine Nacharbeit nicht erforderlich ist. Gleiches trifft für eine Differenzdrucköffnung 7 zu, die am Ende des Differenzdruckaufnehmers 6 ausgebildet ist.The arranged on the
Darüber hinaus sind die jeweiligen Rohrstutzen des Staudruckrohrs 5 und des Differenzdruckaufnehmers 6 hinsichtlich des Austrittsluftstroms aus dem Gebläse zum einen mit einem Abstand A axial hintereinander und zum anderen radial seitlich zueinander versetzt, wobei der Abstand A und der Versatz D hinreichend groß sind, um von dem Differenzdruckaufnehmer 6 erzeugte Störungen nicht zur Staurohrdrucköffnung 5' des Staudruckrohrs 5 gelangen zu lassen.In addition, the respective pipe socket of the
In
Auf der Außenseite der Gehäusewand 2' ragen jeweils an dem Staudruckrohr 5 bzw. Differenzdruckaufnehmer 6 Rohrstutzen 15 bzw. 16 nach außen ab, auf die Schlauchleitungen aufsteckbar sind, die zu der Druckmessdose führen.On the outside of the housing wall 2 'protrude respectively at the
Die Rohrkanäle 17 und 20 für das Staudruckrohr 5 bzw. den Differenzdruckaufnehmer 6 werden bei dem dargestellten Ausführungsbeispiel nicht jeweils durch einen einzigen konischen Schieber, sondern durch zwei aneinander anstoßende Schieber erzeugt, welche jeweils den Außenkanal 18 und Innenkanal 19 des Staudruckrohrs 5 sowie den Außenkanal 21 und den Innenkanal 22 des Differenzdruckaufnehmers 6 bilden. An ihrer Stoßfläche bildet sich eine Trennwand 13 bzw. 14, die nach dem Gießen entfernt werden kann. Bei einer anderen Ausführungsform kann jedoch auch vorgesehen sein, dass die jeweiligen Schieber so ausgebildet werden, dass eine Trennwand nicht entsteht.The
In
Die
Bei dem in
Die Erfindung beschränkt sich in ihrer Ausführung nicht auf die vorstehend angegebenen bevorzugten Ausführungsbeispiele. Vielmehr ist eine Anzahl von Varianten denkbar, welche von der dargestellten Lösung auch bei grundsätzlich anders gearteten Ausführungen Gebrauch macht. So ist es beispielsweise auch möglich, den Druckabnehmer 5 als einen an der Wand vortretenden Vorsprung auszubilden, an dessen Vorderseite die Staurohrdrucköffnung 5' an einer Schrägfläche ausgebildet ist.The invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants are conceivable, which of the illustrated solution even with fundamentally different Designs makes use. Thus, for example, it is also possible to form the
Claims (9)
dadurch gekennzeichnet, dass
characterized in that
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008017536A DE102008017536A1 (en) | 2008-04-03 | 2008-04-03 | Method for integrating a pressure transducer into the housing of a fan |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2107248A2 true EP2107248A2 (en) | 2009-10-07 |
EP2107248A3 EP2107248A3 (en) | 2014-06-11 |
Family
ID=40716977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09002282.3A Withdrawn EP2107248A3 (en) | 2008-04-03 | 2009-02-18 | Method for integrating a pressure reliever into the housing of a fan |
Country Status (2)
Country | Link |
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EP (1) | EP2107248A3 (en) |
DE (1) | DE102008017536A1 (en) |
Cited By (25)
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US20110070818A1 (en) * | 2009-09-24 | 2011-03-24 | Lennox Industries Inc. | Air blower validator, an hvac system and a method of manufacturing an hvac system |
GB2487250A (en) * | 2011-01-25 | 2012-07-18 | Cummins Ltd | Compressor with sensor |
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US9683674B2 (en) | 2013-10-29 | 2017-06-20 | Honeywell Technologies Sarl | Regulating device |
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
US10564062B2 (en) | 2016-10-19 | 2020-02-18 | Honeywell International Inc. | Human-machine interface for gas valve |
US10697815B2 (en) | 2018-06-09 | 2020-06-30 | Honeywell International Inc. | System and methods for mitigating condensation in a sensor module |
US10697632B2 (en) | 2011-12-15 | 2020-06-30 | Honeywell International Inc. | Gas valve with communication link |
US11073281B2 (en) | 2017-12-29 | 2021-07-27 | Honeywell International Inc. | Closed-loop programming and control of a combustion appliance |
US20210290873A1 (en) * | 2009-08-11 | 2021-09-23 | Resmed Motor Technologies Inc. | Single stage, axial symmetric blower and portable ventilator |
CN113550915A (en) * | 2021-07-16 | 2021-10-26 | 盐城工业职业技术学院 | Tubular diffuser for aeroengine |
DE102023001453A1 (en) | 2023-04-06 | 2024-10-10 | Ziehl-Abegg Se | inlet nozzle for fans |
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EP1865205A2 (en) * | 2006-06-07 | 2007-12-12 | Ln 2 - S.R.L. | Support device for pressure sensors arranged inside the pressure chambers of centrifugal fans, particularly for ventilation hoods or fume extractors |
-
2008
- 2008-04-03 DE DE102008017536A patent/DE102008017536A1/en not_active Withdrawn
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2009
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DE2555673A1 (en) * | 1975-08-12 | 1977-04-28 | Nordisk Ventilator | METHOD AND DEVICE FOR DETECTING THE WORKING OF AXIAL FANS IN THE DEMOLITION AREA |
EP0774583A1 (en) * | 1995-11-14 | 1997-05-21 | Grundfos A/S | Casing for a centrifugal pump |
US6126392A (en) * | 1998-05-05 | 2000-10-03 | Goulds Pumps, Incorporated | Integral pump/orifice plate for improved flow measurement in a centrifugal pump |
EP1865205A2 (en) * | 2006-06-07 | 2007-12-12 | Ln 2 - S.R.L. | Support device for pressure sensors arranged inside the pressure chambers of centrifugal fans, particularly for ventilation hoods or fume extractors |
Cited By (34)
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US11998690B2 (en) * | 2009-08-11 | 2024-06-04 | Resmed Motor Technologies Inc. | Single stage, axial symmetric blower and portable ventilator |
US20210290873A1 (en) * | 2009-08-11 | 2021-09-23 | Resmed Motor Technologies Inc. | Single stage, axial symmetric blower and portable ventilator |
US20110070818A1 (en) * | 2009-09-24 | 2011-03-24 | Lennox Industries Inc. | Air blower validator, an hvac system and a method of manufacturing an hvac system |
US9273693B2 (en) | 2011-01-25 | 2016-03-01 | Cummins Ltd. | Compressor comprising a sensor arrangement |
GB2487250A (en) * | 2011-01-25 | 2012-07-18 | Cummins Ltd | Compressor with sensor |
GB2487250B (en) * | 2011-01-25 | 2017-04-26 | Cummins Ltd | Compressor |
US9851103B2 (en) | 2011-12-15 | 2017-12-26 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US10697632B2 (en) | 2011-12-15 | 2020-06-30 | Honeywell International Inc. | Gas valve with communication link |
US9074770B2 (en) | 2011-12-15 | 2015-07-07 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US8947242B2 (en) | 2011-12-15 | 2015-02-03 | Honeywell International Inc. | Gas valve with valve leakage test |
US8839815B2 (en) | 2011-12-15 | 2014-09-23 | Honeywell International Inc. | Gas valve with electronic cycle counter |
US8899264B2 (en) | 2011-12-15 | 2014-12-02 | Honeywell International Inc. | Gas valve with electronic proof of closure system |
US10851993B2 (en) | 2011-12-15 | 2020-12-01 | Honeywell International Inc. | Gas valve with overpressure diagnostics |
US9835265B2 (en) | 2011-12-15 | 2017-12-05 | Honeywell International Inc. | Valve with actuator diagnostics |
US9995486B2 (en) | 2011-12-15 | 2018-06-12 | Honeywell International Inc. | Gas valve with high/low gas pressure detection |
US9846440B2 (en) | 2011-12-15 | 2017-12-19 | Honeywell International Inc. | Valve controller configured to estimate fuel comsumption |
US8905063B2 (en) | 2011-12-15 | 2014-12-09 | Honeywell International Inc. | Gas valve with fuel rate monitor |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
US11421875B2 (en) | 2012-09-15 | 2022-08-23 | Honeywell International Inc. | Burner control system |
US9657946B2 (en) | 2012-09-15 | 2017-05-23 | Honeywell International Inc. | Burner control system |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
US9683674B2 (en) | 2013-10-29 | 2017-06-20 | Honeywell Technologies Sarl | Regulating device |
US10215291B2 (en) | 2013-10-29 | 2019-02-26 | Honeywell International Inc. | Regulating device |
US10024439B2 (en) | 2013-12-16 | 2018-07-17 | Honeywell International Inc. | Valve over-travel mechanism |
US9841122B2 (en) | 2014-09-09 | 2017-12-12 | Honeywell International Inc. | Gas valve with electronic valve proving system |
US10203049B2 (en) | 2014-09-17 | 2019-02-12 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US9645584B2 (en) | 2014-09-17 | 2017-05-09 | Honeywell International Inc. | Gas valve with electronic health monitoring |
US10503181B2 (en) | 2016-01-13 | 2019-12-10 | Honeywell International Inc. | Pressure regulator |
US10564062B2 (en) | 2016-10-19 | 2020-02-18 | Honeywell International Inc. | Human-machine interface for gas valve |
US11073281B2 (en) | 2017-12-29 | 2021-07-27 | Honeywell International Inc. | Closed-loop programming and control of a combustion appliance |
US10697815B2 (en) | 2018-06-09 | 2020-06-30 | Honeywell International Inc. | System and methods for mitigating condensation in a sensor module |
CN113550915A (en) * | 2021-07-16 | 2021-10-26 | 盐城工业职业技术学院 | Tubular diffuser for aeroengine |
DE102023001453A1 (en) | 2023-04-06 | 2024-10-10 | Ziehl-Abegg Se | inlet nozzle for fans |
WO2024208749A1 (en) * | 2023-04-06 | 2024-10-10 | Ziehl-Abegg Se | Inlet nozzle for fans |
Also Published As
Publication number | Publication date |
---|---|
EP2107248A3 (en) | 2014-06-11 |
DE102008017536A1 (en) | 2009-10-08 |
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