EP2107248A2 - Procédé d'intégration d'un balayeur de pression dans le boîtier d'un ventilateur - Google Patents
Procédé d'intégration d'un balayeur de pression dans le boîtier d'un ventilateur 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
- Authority
- 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.)
- Withdrawn
Links
- 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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008017536A DE102008017536A1 (de) | 2008-04-03 | 2008-04-03 | Verfahren zur Integration eines Druckabnehmers in das Gehäuse eines Gebläses |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2107248A2 true EP2107248A2 (fr) | 2009-10-07 |
EP2107248A3 EP2107248A3 (fr) | 2014-06-11 |
Family
ID=40716977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09002282.3A Withdrawn EP2107248A3 (fr) | 2008-04-03 | 2009-02-18 | Procédé d'intégration d'un balayeur de pression dans le boîtier d'un ventilateur |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2107248A3 (fr) |
DE (1) | DE102008017536A1 (fr) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 (zh) * | 2021-07-16 | 2021-10-26 | 盐城工业职业技术学院 | 一种航空发动机用管式扩压器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2555673A1 (de) * | 1975-08-12 | 1977-04-28 | Nordisk Ventilator | Verfahren und vorrichtung zur erkennung des arbeitens von axialgeblaesen im abreissgebiet |
EP0774583A1 (fr) * | 1995-11-14 | 1997-05-21 | Grundfos A/S | Carter pour une pompe centrifuge |
US6126392A (en) * | 1998-05-05 | 2000-10-03 | Goulds Pumps, Incorporated | Integral pump/orifice plate for improved flow measurement in a centrifugal pump |
EP1865205A2 (fr) * | 2006-06-07 | 2007-12-12 | Ln 2 - S.R.L. | Dispositif de support pour les capteurs de pression arrangés dans les chambres de pression des ventilateurs centrifuges, particulièrement pour les hottes de ventilation ou les extracteurs de fumées |
-
2008
- 2008-04-03 DE DE102008017536A patent/DE102008017536A1/de not_active Withdrawn
-
2009
- 2009-02-18 EP EP09002282.3A patent/EP2107248A3/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2555673A1 (de) * | 1975-08-12 | 1977-04-28 | Nordisk Ventilator | Verfahren und vorrichtung zur erkennung des arbeitens von axialgeblaesen im abreissgebiet |
EP0774583A1 (fr) * | 1995-11-14 | 1997-05-21 | Grundfos A/S | Carter pour une pompe centrifuge |
US6126392A (en) * | 1998-05-05 | 2000-10-03 | Goulds Pumps, Incorporated | Integral pump/orifice plate for improved flow measurement in a centrifugal pump |
EP1865205A2 (fr) * | 2006-06-07 | 2007-12-12 | Ln 2 - S.R.L. | Dispositif de support pour les capteurs de pression arrangés dans les chambres de pression des ventilateurs centrifuges, particulièrement pour les hottes de ventilation ou les extracteurs de fumées |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US10422531B2 (en) | 2012-09-15 | 2019-09-24 | Honeywell International Inc. | System and approach for controlling a combustion chamber |
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 |
US9234661B2 (en) | 2012-09-15 | 2016-01-12 | Honeywell International Inc. | Burner control system |
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 (zh) * | 2021-07-16 | 2021-10-26 | 盐城工业职业技术学院 | 一种航空发动机用管式扩压器 |
Also Published As
Publication number | Publication date |
---|---|
EP2107248A3 (fr) | 2014-06-11 |
DE102008017536A1 (de) | 2009-10-08 |
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