WO2007129997A1 - External rotor 'ac' condenser motor and ceramic isolator used in exhaust aspirators of flue gas in hermetic combi boilers - Google Patents
External rotor 'ac' condenser motor and ceramic isolator used in exhaust aspirators of flue gas in hermetic combi boilers Download PDFInfo
- Publication number
- WO2007129997A1 WO2007129997A1 PCT/TR2007/000038 TR2007000038W WO2007129997A1 WO 2007129997 A1 WO2007129997 A1 WO 2007129997A1 TR 2007000038 W TR2007000038 W TR 2007000038W WO 2007129997 A1 WO2007129997 A1 WO 2007129997A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hermetic
- external rotor
- exhaust
- flue gas
- aspirators
- Prior art date
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 12
- 239000003546 flue gas Substances 0.000 title claims abstract description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 3
- 239000000378 calcium silicate Substances 0.000 claims description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 3
- 230000007257 malfunction Effects 0.000 abstract description 5
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Definitions
- This invention introduces single phase external rotor condenser motors and ceramic isolators to flue gas aspirators instead of shadow polar single phase motors.
- Aspirators manufactured for exhaust of flue gas of airtight combi boilers usually employ shaded pole 'AC motors. Only few aspirators employ electronically controlled 'DC powered 'EC motors. The most common reason for using aspirators which employ shadow polar 'AC is the low price of the product. On the other hand, aspirators using 'EC motors are not preferred due to their high price. Shaded pole 'AC motors have important technical problems. Low efficiency, fixed rpm, low power factor (Cos ⁇ ), extra cost of installing the product to the aspirator, the need for cooler fans for motor bearing and coils; the need for special flange and special silicone pad vibration sensors and the lack of stable mechanic construction which causes the product to malfunction and become noisy after short period.
- the ceramic isolator one of the components of the invention, can be used instead of components mentioned above and this reduces cost, provides ease of application and saves time.
- hermetic combi boilers The most important quality for hermetic combi boilers is efficient combustion under all operating conditions. Efficient burning is achieved through equal mixture of air and gas. Otherwise efficient burning can not be achieved and the heating performance and efficiency of the unit will drop. The ability to adjust the rpm allows the flow and pressure to be adjusted and thus provides perfect combustion.
- Drawing 1- Front view of the aspirator with steel plate housing and aluminum impeller with external rotor motor and ceramic isolator plate.
- Drawing 2- Cross section view of the aspirator with steel plate .housing and aluminum impeller with external rotor motor and isolator plate.
- Impeller 5. Impeller hub.
- External rotor single phase motor (1) is placed between the ceramic plate (3) and the aspirator housing (6) and mounted with 4 stainless steel screws (8).
- Radial aspirators shown on drawing 1 and 2 exhaust the hot carbon monoxide (CO) and carbon dioxide (CO2) from burning chamber of the hermetic combi boiler.
- CO carbon monoxide
- CO2 carbon dioxide
- the limit temperature (Perm.amb.temp.) is 180-250 degrees 0 C. At this temperature and under these operating conditions aspirators are required to function without malfunctioning. The motor should not be affected by temperature.
- the ceramic plate (3) prevents motor (1) (the bearing and the coils) from being effected by the temperature in the aspirator. Thus the coils do not 95 burn, the bearings do not malfunction and the system has a longer operating life.
- the ceramic plate (3) also stabilizes the motor (1) by connecting to the aspirator housing (6) and thus absorbs (reduces) vibrations of the motor. 100 The absorption of the vibration results in less vibration transferred to the motor and thus less noise.
- Aspirators with external rotor condenser motors are 'A' class products because these motors are more efficient and have higher power factor 115 than shaded pole motors. Shaded pole motors are 'B' class products due to their low efficiency and low power factor.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The use of condenser 'AC motors for the exhaust of flue gas in hermetic combi boiler aspirators provide perfect combustion, efficiency, high power factor (Cos φ), and thus renders the aspirator an 'A' class product. Additional cooling units are not required. Ceramic plate (3) installed between motor housing (1 ) and the housing of the aspirator (6) provides vibration absorption and heat isolation, low malfunction rate, low noise and less connecting parts. All these factors contribute as low and shorter production time.
Description
EXTERNAL ROTOR 'AC CONDENSER MOTOR AND CERAMIC
ISOLATOR USED IN EXHAUST ASPIRATORS OF FLUE GAS IN
HERMETIC COMBI BOILERS
This invention introduces single phase external rotor condenser motors and ceramic isolators to flue gas aspirators instead of shadow polar single phase motors.
Basic Features of the Invention: Aspirators manufactured for exhaust of flue gas of airtight combi boilers usually employ shaded pole 'AC motors. Only few aspirators employ electronically controlled 'DC powered 'EC motors. The most common reason for using aspirators which employ shadow polar 'AC is the low price of the product. On the other hand, aspirators using 'EC motors are not preferred due to their high price. Shaded pole 'AC motors have important technical problems. Low efficiency, fixed rpm, low power factor (Cos φ), extra cost of installing the product to the aspirator, the need for cooler fans for motor bearing and coils; the need for special flange and special silicone pad vibration sensors and the lack of stable mechanic construction which causes the product to malfunction and become noisy after short period.
The leading companies Natalini, Fime and EBM use internal rotor single phase shaded pole motors for flue gas aspirators as it can be seen from their websites (www.natalini.it-www.fime-motors.com-www.ebm.com). These companies employ a flange with a stand, cooler fan and silicone pad vibration sensors for bearing and coil protection.
Purpose of the Invention:
The ceramic isolator, one of the components of the invention, can be used instead of components mentioned above and this reduces cost, provides
ease of application and saves time.
The use of the condenser external rotor motor instead of shaded pole motor for flue gas aspirators we advise in hermetic combi boilers will prove more advantageous than the shadow polar motor due to its high performance and adjustable rpm.
The most important quality for hermetic combi boilers is efficient combustion under all operating conditions. Efficient burning is achieved through equal mixture of air and gas. Otherwise efficient burning can not be achieved and the heating performance and efficiency of the unit will drop. The ability to adjust the rpm allows the flow and pressure to be adjusted and thus provides perfect combustion.
Thus, with condenser 'AC external rotor motor and ceramic isolator plate, the manufacturer achieves high performance, low malfunction rate, easy assembly and low cost; the consumer saves energy and benefits from malfunction free operating.
The Explanation of the Invention with Drawings:
Attached are the drawings of the hermetic combi boiler explaining the invention. These drawings are:
Drawing 1- Front view of the aspirator with steel plate housing and aluminum impeller with external rotor motor and ceramic isolator plate. Drawing 2- Cross section view of the aspirator with steel plate .housing and aluminum impeller with external rotor motor and isolator plate.
Drawing 3- Front view of the aspirator with aluminum plate housing and aluminum impeller with external rotor motor and isolator plate. Drawing 4- Cross section view of the aspirator with aluminum plate housing and aluminum impeller with external rotor motor and isolator plate.
Drawing 5- Cross section view of the ceramic isolator plate.
Drawing 6- Front view of the ceramic isolator plate.
The parts numbered in the drawings are indicated below:
1. External rotor single phase condenser motor.
2. Rustproof shaft.
3. Ceramic plate (Calcium Silicate).
4. Impeller. 5. Impeller hub.
6. Aspirator housing.
7. Stainless nut.
8. Stainless steel screw.
Detailed Explanation of the Invention:
External rotor single phase motor (1) is placed between the ceramic plate (3) and the aspirator housing (6) and mounted with 4 stainless steel screws (8).
Radial aspirators shown on drawing 1 and 2 exhaust the hot carbon monoxide (CO) and carbon dioxide (CO2) from burning chamber of the hermetic combi boiler.
During the exhaust of the gas, the aspirator housing (6), the impeller (4), impeller hub (5), stainless steel bolts (7), stainless steel screws (8) and rustproof steel shaft (2) heat.
The limit temperature (Perm.amb.temp.) is 180-250 degrees 0C. At this temperature and under these operating conditions aspirators are required to function without malfunctioning. The motor should not be affected by temperature.
The ceramic plate (3) prevents motor (1) (the bearing and the coils) from being effected by the temperature in the aspirator. Thus the coils do not 95 burn, the bearings do not malfunction and the system has a longer operating life.
The ceramic plate (3) also stabilizes the motor (1) by connecting to the aspirator housing (6) and thus absorbs (reduces) vibrations of the motor. 100 The absorption of the vibration results in less vibration transferred to the motor and thus less noise.
The efficient operation of the motor, the power factor (Cos φ) being close to 1 , the vanes on the motor, the removal of a cooling unit and cooling of 105 the motor coils and bearings with these vanes, adjustable rpm, easy assembly and reduction of additional parts for montage are advantages of this invention.
Additionally, it is very important to keep a fixed rate of air/gas mixture. This 110 rate ensures energy saving as well as perfect combustion. The adjustable rpm provides this advantage; this is not possible with shaded pole motors.
Aspirators with external rotor condenser motors are 'A' class products because these motors are more efficient and have higher power factor 115 than shaded pole motors. Shaded pole motors are 'B' class products due to their low efficiency and low power factor.
120
Claims
1. The external rotor 'AC condenser motor used in hermetic combi boilers for exhaust of flue gas and ceramic isolator (3); which is mounted between the housing of the aspirator (6) and external rotor condenser motor (1 ) with 4 stainless steel screws (8).
2. According to the first claim, for the external rotor 'AC condenser motor used in hermetic combi boilers for exhaust of flue gas and the ceramic isolator, the stator is outside the rotor of the "AC motor (1 ) and vanes connected to the motor cool the coils and the bearings.
3. According to the first and second claim, for the external rotor 'AC condenser motor used in hermetic combi boilers for exhaust of flue gas and ceramic isolator, the ceramic isolator plate (3) is made from calcium silicate, calcium silicate being a very good heat isolator at high temperatures and absorbing vibration because of its soft structure.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL07769079T PL2038556T3 (en) | 2006-05-08 | 2007-04-26 | External rotor 'ac' condenser motor and ceramic isolator used in exhaust aspirators of flue gas in hermetic combi boilers |
| EP07769079A EP2038556B1 (en) | 2006-05-08 | 2007-04-26 | External rotor 'ac' condenser motor and ceramic isolator used in exhaust aspirators of flue gas in hermetic combi boilers |
| AT07769079T ATE527450T1 (en) | 2006-05-08 | 2007-04-26 | AC CONDENSER MOTOR WITH EXTERNAL ROTOR AND CERAMIC INSULATOR FOR USE IN EXHAUST EXTRACTORS IN HERMETIC COMBINATION BOILERS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR2006/02244 | 2006-05-08 | ||
| TR200602244 | 2006-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2007129997A1 true WO2007129997A1 (en) | 2007-11-15 |
| WO2007129997B1 WO2007129997B1 (en) | 2008-01-24 |
Family
ID=38529438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2007/000038 WO2007129997A1 (en) | 2006-05-08 | 2007-04-26 | External rotor 'ac' condenser motor and ceramic isolator used in exhaust aspirators of flue gas in hermetic combi boilers |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2038556B1 (en) |
| AT (1) | ATE527450T1 (en) |
| PL (1) | PL2038556T3 (en) |
| WO (1) | WO2007129997A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2466147A1 (en) * | 2010-12-14 | 2012-06-20 | Elica S.p.A. | Radial ventilator and electric motor connected by a vibration damper |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841208A (en) * | 1973-08-10 | 1974-10-15 | Dow Chemical Co | Apparatus for dispersing effluent gas into the atmosphere |
| FR2750478A1 (en) * | 1996-07-01 | 1998-01-02 | Barrault Jean Luc | Hot air blower for uniform heating of room from gas or wood fire |
| US6435818B1 (en) * | 2000-08-30 | 2002-08-20 | Jakel Incorporated | Low vibration blower housing and motor mount |
| EP1371903A2 (en) * | 2002-06-10 | 2003-12-17 | Vaillant GmbH | Heater |
-
2007
- 2007-04-26 WO PCT/TR2007/000038 patent/WO2007129997A1/en active Application Filing
- 2007-04-26 AT AT07769079T patent/ATE527450T1/en not_active IP Right Cessation
- 2007-04-26 PL PL07769079T patent/PL2038556T3/en unknown
- 2007-04-26 EP EP07769079A patent/EP2038556B1/en not_active Not-in-force
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841208A (en) * | 1973-08-10 | 1974-10-15 | Dow Chemical Co | Apparatus for dispersing effluent gas into the atmosphere |
| FR2750478A1 (en) * | 1996-07-01 | 1998-01-02 | Barrault Jean Luc | Hot air blower for uniform heating of room from gas or wood fire |
| US6435818B1 (en) * | 2000-08-30 | 2002-08-20 | Jakel Incorporated | Low vibration blower housing and motor mount |
| EP1371903A2 (en) * | 2002-06-10 | 2003-12-17 | Vaillant GmbH | Heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2466147A1 (en) * | 2010-12-14 | 2012-06-20 | Elica S.p.A. | Radial ventilator and electric motor connected by a vibration damper |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2038556A1 (en) | 2009-03-25 |
| EP2038556B1 (en) | 2011-10-05 |
| WO2007129997B1 (en) | 2008-01-24 |
| PL2038556T3 (en) | 2012-04-30 |
| ATE527450T1 (en) | 2011-10-15 |
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