EP0053703A2 - Blower motor cooling arrangement - Google Patents
Blower motor cooling arrangement Download PDFInfo
- Publication number
- EP0053703A2 EP0053703A2 EP81108910A EP81108910A EP0053703A2 EP 0053703 A2 EP0053703 A2 EP 0053703A2 EP 81108910 A EP81108910 A EP 81108910A EP 81108910 A EP81108910 A EP 81108910A EP 0053703 A2 EP0053703 A2 EP 0053703A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- motor
- cooling
- blower motor
- vent stack
- 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- Withdrawn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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
-
- 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
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
-
- 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
- F04D29/5806—Cooling the drive system
Definitions
- the present invention relates to an electric blower motor cooling arrangement according to the preamble of claim 1.
- blower in the vent stack of a furnace to induce a draft for moving the products of combustion from the combustion chamber to the atmosphere.
- this type of induced draft furnace had the blower mounted in the heating system or furnace vent stack and the blower was operated by a conventional shaft and bearing connected to the motor that was mounted external to the stack. With the electric motor mounted external to the stack, the motor derived its basic cooling from the ambient air through the use of supplementary cooling fans driven by the motor.
- This known type of an arrangement occupied a great deal of space for clearance around the cooling fans and consumes additional power.
- the present invention provides for mounting an electric blower motor through the vent stack itself to operate an associated impeller means to move the combustion products in the vent stack.
- the motor is designed with cooling air passage means through the motor.
- the mounting,motor, and impeller means are designed to create a negative pressure differential across the cooling air passage means to draw cooling air trough the motor structure to cool the motor and then exhaust this air into the furnace vent stack along with the products of combustion.
- This structure allows for a positive cooling function for the motor and its bearings, along with the ability to provide a trim profile for the furnace vent structure.
- Figure 1 discloses a pictorial representation of a cnn- ventional heating system or furnace 10 having a furnace vent stack 11 mounted through the tnp 12 of the furnace 10.
- the furnace 10 has a vestibule 13 in which are placed conventional appendages and controls for the furnace.
- various parts of the fuel and control system for a furnace 10 as exemplified by the showing of a control transformer 14, a gas valve 15, a gas inlet pipe 16, and a gas pipe 17 to a burner (not shown) which is internal to the furnace 10.
- a heat exchanger Internal to the furnace 10 and not shown is a heat exchanger which operates with the burner fed from the gas pipe 17.
- control equipment including the transformer 14 and the gas valve 15 along with all of the control circuitry are conventional in a gas fired furnace. While a gas fired heating system has been specifically disclosed in Figure 1 it should be understood that any type of heating system or furnace that is operated with an induced draft condition can be used.
- the furnace 10 is equipped with an induced draft blower means 20 that is disclosed as mounted in the vestibule 13 of the furnace 10.
- the induced draft blower 20 is energized by conductors 21 and 22 from control equipment (not shown) in a conventional fashion.
- the induced draft blower 20 includes a blower motor 24 that is central to the present invention. Its details will be provided after a general description of the operation of an induced draft blower type of furnace 10 is completed.
- the - tor 24 operates a blower or impeller means 31 ( Figures 2 and 3) within the induced draft blower 20 that draws the flue gases from the combustion chamber and the internal heat exchanger within the furnace 10. The flue gases are then forced out of the stack 11 as indicated by the arrow 25.
- the operation of the motor 24 draws combustion air into the combustion chamber of the furnace 10 where it is efficiently burned to supply heat to the heat exchanger. Tne flue gases are then positively forced up the stack 11 rather than relying on gravity as in conventional furnaces. Also moved up the stack 11 is some cooling air which has been schematically represented at 26.
- the cooling air 26 is drawn through the motor 24 into the blower means 20 and is combined with the flue gases. The combination of the flue gases and the cooling air 26 is forced up the stack 11 and provides for a positive means of cooling the blower motor 24 as will be described in detail in connection with Figures 2 and 3.
- the vestibule 13 of the furnace 10 has been disclosed having an opening 30 that communicates with the combustion chamber.
- an impeller means 31 of a centrifugal or squirrel cage type of blower.
- blower or impeller blades are disclosed, and the structure of the squirrel cage blower 31 is of a conventional design at least as to the portion 32.
- the blower means 31 further has an impeller backplate 33 that has a raised portion 34 which includes a plurality of holes 35, the purpose of which will be described later.
- the raised portion 34 of the backplate 33 is used to partially enclose the motor 24 in a protective manner from the inside of the stack 11.
- the motor 24 has a central shaft 23 that is disclosed as being hollow to form an air passage between the outside ambient air in the vestibule 13, and the interior of the stack 11.
- the motor 24 further has cooling air passage means generally disclosed at 27 through which cooling air 26 is drawn.
- the hollow shaft 23 forms part of the cooling air passage means.
- the cooling air drawn through the cooling air passage means 27 can flow through the holes 35 in the impeller backplate 33 as well as being drawn through the center opening of the motor shaft 23.
- the blower housing 20 further has an end member 40 or a housing backplate that forms one side of the blower. This can best be seen in Figure 1. There is a small space 29 between the housing backplate 40 and the impeller backplate 33 that forms a further air passage for the air flow disclosed at 26.
- the mounting of the motor 24 into a hole or opening in the vent stack 11 reduces the silhouette of the structure and further allows for the development of well defined cooling air passage means to allow cooling air to be drawn through the motor to keep the motor and its bearing structure within an acceptable operating range.
- the air 26 that is used for cooling is drawn from the ambient air into the stack 11 wnere it is mixed with the flue gases and this mixture is then expelled through the stack 11 as indicated at 25. By creating a pressure drop across the openings from ambient air to the interior of the stack 11 a safe operating mode that allows for positive cooling of the blower motor 24 is created.
- FIG 3 an isometric view of part of the structure in detail has been discloses. Tne difference between Figure 3 and Figure 2 is that the shaft 23 is shown as a solid shaft as opposed to a hollow shaft and vent holes 35 are not shown. In Figure 3 the shaft 23 is disclosed passing into motor coils 24' that are placed in'a motor means 24. The cooling entering the motor means 24 has been again designated at 26 as a number of phantom lines.
- the blower structure 20 has been disclosed viewed from inside of the furnace 10, and it becomes apparent that the blower 20 is a squirrel cage type of blower having the impeller backplate 33 but in the version disclosed in Figure 3 the holes 35 have not been provided as all of the air passes in space 29 between the housing backplate 40 and the impeller backplate 33.
- the structure disclosed in Figure 3 has generally the same reference numerals as that disclosed in Figure 2, and a further description is believed unnecessary.
- the operation of the impeller means 31 causes air to be driven by the impeller means 31 up the stack 11 as indicated at 25.
- the rotation of the impeller means 31 creates a pressure drop that draws the cooling air 26 through the motor 25 and exhausts the cooling air 26 in the space 29 between the impeller backplate 33 and the housing backplate 40 where the air mixes with the products of combustion.
- the exact structure for implementing the present invention is not limited to the specific structural details disclosed by the applicant.
- the invention is broadly directed to the principle of drawing cooling air through a blower motor that has cooling air passage means that extend from the normal ambient surrounding to the interior of a vent stack of a furnace.
- the operation of the blower within the vent stack creates a pressure drop that draws cooling air through the cooling air passage means to cool the motor and then mixes this air with the products of combustion from the furnace where they are in turn expelled in the furnace vent stack.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
An induced draft type of furnace or heating system (10) is operated with a fan (31) that draws cooling air through the motor (24) that operates the fan or blower. The cooling air is drawn through passage means (23, 27, 29, 35) in the motor and then into the vent stack (11) of the furnace where the cooling air is mixed with the flue products and the mixture is forced out of the vent stack of the furnace (Figure 2).
Description
- The present invention relates to an electric blower motor cooling arrangement according to the preamble of claim 1.
- For sometime it is known to use a blower in the vent stack of a furnace to induce a draft for moving the products of combustion from the combustion chamber to the atmosphere. Typically this type of induced draft furnace had the blower mounted in the heating system or furnace vent stack and the blower was operated by a conventional shaft and bearing connected to the motor that was mounted external to the stack. With the electric motor mounted external to the stack, the motor derived its basic cooling from the ambient air through the use of supplementary cooling fans driven by the motor.
- This known type of an arrangement occupied a great deal of space for clearance around the cooling fans and consumes additional power.
- It is therefore the main object of the present invention to provide for an electric blower motor cooling arrangement with fewer space and power requirements. This object is achieved by the invention as characterized in claim 1. Further advantageous embodiments of the present invention may be taken from the subclaims.
- The present invention provides for mounting an electric blower motor through the vent stack itself to operate an associated impeller means to move the combustion products in the vent stack. The motor is designed with cooling air passage means through the motor. The mounting,motor, and impeller means are designed to create a negative pressure differential across the cooling air passage means to draw cooling air trough the motor structure to cool the motor and then exhaust this air into the furnace vent stack along with the products of combustion. This structure allows for a positive cooling function for the motor and its bearings, along with the ability to provide a trim profile for the furnace vent structure.
-
- Figure 1 is a pictorial representation of a furnace incorporating the invention;
- Figure 2 is a cross section of a blower means showing the cooling arrangement for the motor; and
- Figure 3 is an isometric drawing of the motor and fan structure.
- Figure 1 discloses a pictorial representation of a cnn- ventional heating system or
furnace 10 having afurnace vent stack 11 mounted through thetnp 12 of thefurnace 10. Thefurnace 10 has avestibule 13 in which are placed conventional appendages and controls for the furnace. In thevestibule 13 there are placed various parts of the fuel and control system for afurnace 10 as exemplified by the showing of acontrol transformer 14, agas valve 15, agas inlet pipe 16, and a gas pipe 17 to a burner (not shown) which is internal to thefurnace 10. Internal to thefurnace 10 and not shown is a heat exchanger which operates with the burner fed from the gas pipe 17. The control equipment including thetransformer 14 and thegas valve 15 along with all of the control circuitry are conventional in a gas fired furnace. While a gas fired heating system has been specifically disclosed in Figure 1 it should be understood that any type of heating system or furnace that is operated with an induced draft condition can be used. - The
furnace 10 is equipped with an induced draft blower means 20 that is disclosed as mounted in thevestibule 13 of thefurnace 10. The induceddraft blower 20 is energized byconductors 21 and 22 from control equipment (not shown) in a conventional fashion. The induceddraft blower 20 includes ablower motor 24 that is central to the present invention. Its details will be provided after a general description of the operation of an induced draft blower type offurnace 10 is completed. The -tor 24 operates a blower or impeller means 31 (Figures 2 and 3) within the induceddraft blower 20 that draws the flue gases from the combustion chamber and the internal heat exchanger within thefurnace 10. The flue gases are then forced out of thestack 11 as indicated by thearrow 25. The operation of themotor 24 draws combustion air into the combustion chamber of thefurnace 10 where it is efficiently burned to supply heat to the heat exchanger. Tne flue gases are then positively forced up thestack 11 rather than relying on gravity as in conventional furnaces. Also moved up thestack 11 is some cooling air which has been schematically represented at 26. Thecooling air 26 is drawn through themotor 24 into the blower means 20 and is combined with the flue gases. The combination of the flue gases and thecooling air 26 is forced up thestack 11 and provides for a positive means of cooling theblower motor 24 as will be described in detail in connection with Figures 2 and 3. - In Ficure 2 the
vestibule 13 of thefurnace 10 has been disclosed having an opening 30 that communicates with the combustion chamber. Immediately adjacent the opening 30 is an impeller means 31 of a centrifugal or squirrel cage type of blower. At 32 blower or impeller blades are disclosed, and the structure of thesquirrel cage blower 31 is of a conventional design at least as to theportion 32. The blower means 31 further has animpeller backplate 33 that has a raisedportion 34 which includes a plurality ofholes 35, the purpose of which will be described later. The raisedportion 34 of thebackplate 33 is used to partially enclose themotor 24 in a protective manner from the inside of thestack 11. Themotor 24 has acentral shaft 23 that is disclosed as being hollow to form an air passage between the outside ambient air in thevestibule 13, and the interior of thestack 11. Themotor 24 further has cooling air passage means generally disclosed at 27 through which coolingair 26 is drawn. Thehollow shaft 23 forms part of the cooling air passage means. - In the disclosure of Figure 2 the cooling air drawn through the cooling air passage means 27 can flow through the
holes 35 in theimpeller backplate 33 as well as being drawn through the center opening of themotor shaft 23. Theblower housing 20 further has anend member 40 or a housing backplate that forms one side of the blower. This can best be seen in Figure 1. There is asmall space 29 between thehousing backplate 40 and theimpeller backplate 33 that forms a further air passage for the air flow disclosed at 26. - The operation of the furnace and the
blower 20 can best be explained in connection with Figure 2. when themotor 24 is energized and is rotating, the impeller means 31 is driven by the motor means 24 and rotates to draw combustion products indicated at 39 into the impeller means 31 where they are driven up thestack 11 as indicated at 25. The operation of the blower motor means 24, in rotating the impeller means 31, creates a pressure drop between the free ambient air around themotor 24 and thevent stack 11. This pressure drop causes thecooling air 26 to flow through theshaft 23, the passage means 27 and into thestack 11. Some of the air is drawn through theholes 35 into thestack 11 while other parts of the air flow are at 29 between thescroll wall 40 and theback wall 33 of the impeller means 31. - It is important to point out at this time that the mounting of the
motor 24 into a hole or opening in thevent stack 11 reduces the silhouette of the structure and further allows for the development of well defined cooling air passage means to allow cooling air to be drawn through the motor to keep the motor and its bearing structure within an acceptable operating range. Theair 26 that is used for cooling is drawn from the ambient air into thestack 11 wnere it is mixed with the flue gases and this mixture is then expelled through thestack 11 as indicated at 25. By creating a pressure drop across the openings from ambient air to the interior of the stack 11 a safe operating mode that allows for positive cooling of theblower motor 24 is created. - In Figure 3 an isometric view of part of the structure in detail has been discloses. Tne difference between Figure 3 and Figure 2 is that the
shaft 23 is shown as a solid shaft as opposed to a hollow shaft andvent holes 35 are not shown. In Figure 3 theshaft 23 is disclosed passing into motor coils 24' that are placed in'a motor means 24. The cooling entering the motor means 24 has been again designated at 26 as a number of phantom lines. Theblower structure 20 has been disclosed viewed from inside of thefurnace 10, and it becomes apparent that theblower 20 is a squirrel cage type of blower having theimpeller backplate 33 but in the version disclosed in Figure 3 theholes 35 have not been provided as all of the air passes inspace 29 between thehousing backplate 40 and theimpeller backplate 33. The structure disclosed in Figure 3 has generally the same reference numerals as that disclosed in Figure 2, and a further description is believed unnecessary. The operation of the impeller means 31 causes air to be driven by the impeller means 31 up thestack 11 as indicated at 25. The rotation of the impeller means 31 creates a pressure drop that draws thecooling air 26 through themotor 25 and exhausts thecooling air 26 in thespace 29 between theimpeller backplate 33 and thehousing backplate 40 where the air mixes with the products of combustion. - The primary differences between the disclosures of Figures 2 and 3 are in the design and extent of the cooling passage means for carrying the
cooling air 26 into thestack 11. In Figure 2 amotor shaft 23 that is hollow has been disclosed along with vent holes 35 in theimpeller backplate 33. In Figure 3 this means of cooling has been done away and the sole cooling path is through the motor structure and between theimpeller backplate 33 and thehousing backplate 40. - The exact structure for implementing the present invention is not limited to the specific structural details disclosed by the applicant. The invention is broadly directed to the principle of drawing cooling air through a blower motor that has cooling air passage means that extend from the normal ambient surrounding to the interior of a vent stack of a furnace. The operation of the blower within the vent stack creates a pressure drop that draws cooling air through the cooling air passage means to cool the motor and then mixes this air with the products of combustion from the furnace where they are in turn expelled in the furnace vent stack. Many modifications of the structure of the present invention are possible, and the applicant wishes to be limited in the scope of his invention solely by the scope of the appended claims.
Claims (7)
1.Anelectric blower motor cooling arrangement adapted to be operated in conjunction with a heating system vent stack to cool the blower motor with free ambient air while moving the flue gases of the furnace in said vent stack, characterized by cooling air passage means (23,27,29) in said motor (24) extending from said free ambient air to an interior portion of said vent stack (11 ).
2.Cooling arrangement according to claim 1 with said motor being connected to drive impeller means within said vent stack, characterized in that said cooling air paasage means (23,27,29) extend to an interior portion of said vent stack (11) adjacent to said impeller means (31).
3.Cooling arrangement according to claim 2, characterized in that said impeller means (31) includes squirrel cage impeller means (32) mounted for rotation in a housing scroll (40) that forms part of said heating system.
4.Cooling arrangement according to claim 3, characterized in that said impeller means(31) includes an impeller backplate (33)with a central opening connected to mount said impeller means to said blower motor (24) with said impeller backplate (33) having a portion (34) partially covering said blower motor (24) and said opening in said vent stack (11) to protect said blower motor from said flue gases while at the same time providing a portion (29) of said cooling air passage means.
5. Cooling arrangement according to claim 4, characterized in that said portion (34) of said impeller backplate (33) has openings (35) as part of said cooling air passage means.
6. Cooling arrangement according to claim 4, characterized in that, said blower motor (24) has a hollow rotor shaft (23) as part of said cooling air passage means.
7. Cooling arrangement according to claim 5, characterized in that said squirrel cage impeller means (31) and said impeller backplate means (33) form part of ambient air movement means to provide a pressure drop between said ambient air and said vent stack to draw said ambient air through said blower motor cooling air passage means to cool said motor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21326080A | 1980-12-05 | 1980-12-05 | |
US213260 | 1980-12-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0053703A2 true EP0053703A2 (en) | 1982-06-16 |
EP0053703A3 EP0053703A3 (en) | 1982-09-15 |
Family
ID=22794376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81108910A Withdrawn EP0053703A3 (en) | 1980-12-05 | 1981-10-26 | Blower motor cooling arrangement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0053703A3 (en) |
JP (1) | JPS57122647A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191644A2 (en) * | 1985-02-14 | 1986-08-20 | A.O. Smith Corporation | Submersible chamber water heater |
GB2172981A (en) * | 1985-03-29 | 1986-10-01 | Christopher John Kershaw | Improvements in or relating to chimney flues |
US5070772A (en) * | 1990-03-15 | 1991-12-10 | Heico, Inc. | Venter |
US5375651A (en) * | 1991-04-03 | 1994-12-27 | Magnetek Universal Electric | Draft inducer blower motor mounting and cooling construction |
FR2859579A1 (en) * | 2003-09-10 | 2005-03-11 | Valeo Climatisation | DEVICE FOR SUPPORTING AN ELECTRIC MOTOR DRIVING A TURBINE, ESPECIALLY FOR AN APPARATUS FOR HEATING, VENTILATION AND / OR AIR CONDITIONING OF A MOTOR VEHICLE |
EP2594847A1 (en) | 2011-11-18 | 2013-05-22 | exodraft a/s | A motor-driven chimney draft system and an impeller for use in the system |
FR3012540A1 (en) * | 2013-10-24 | 2015-05-01 | Soler & Palau Res Sl | DEVICE FOR COOLING THE ENGINE OF A FAN |
WO2016039890A3 (en) * | 2014-09-09 | 2016-05-19 | Twin City Fan Companies, Ltd. | Motor cooling device and method |
FR3047524A1 (en) * | 2016-02-09 | 2017-08-11 | Atlantic Climatisation & Ventilation | VENTILATION DEVICE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2209410A5 (en) * | 1972-11-03 | 1974-06-28 | Technicair Sa | |
FR2410155A1 (en) * | 1977-11-24 | 1979-06-22 | Noirats Sarl Usine | Hot air extractor system - operates with cold air bleed passing over extractor motor to second exhaust chamber |
GB2060069A (en) * | 1979-09-28 | 1981-04-29 | Sueddeutsche Kuehler Behr | Radial fan particularly for heating or air-conditioning apparatus for vehicles |
-
1981
- 1981-10-26 EP EP81108910A patent/EP0053703A3/en not_active Withdrawn
- 1981-11-25 JP JP56189033A patent/JPS57122647A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2209410A5 (en) * | 1972-11-03 | 1974-06-28 | Technicair Sa | |
FR2410155A1 (en) * | 1977-11-24 | 1979-06-22 | Noirats Sarl Usine | Hot air extractor system - operates with cold air bleed passing over extractor motor to second exhaust chamber |
GB2060069A (en) * | 1979-09-28 | 1981-04-29 | Sueddeutsche Kuehler Behr | Radial fan particularly for heating or air-conditioning apparatus for vehicles |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0191644A2 (en) * | 1985-02-14 | 1986-08-20 | A.O. Smith Corporation | Submersible chamber water heater |
EP0191644A3 (en) * | 1985-02-14 | 1987-08-26 | A.O. Smith Corporation | Submersible chamber water heater |
GB2172981A (en) * | 1985-03-29 | 1986-10-01 | Christopher John Kershaw | Improvements in or relating to chimney flues |
US5070772A (en) * | 1990-03-15 | 1991-12-10 | Heico, Inc. | Venter |
US5375651A (en) * | 1991-04-03 | 1994-12-27 | Magnetek Universal Electric | Draft inducer blower motor mounting and cooling construction |
EP1515416A1 (en) * | 2003-09-10 | 2005-03-16 | Valeo Climatisation | Support device for an electric motor driving a fan wheel, specially for a heating, ventilating and /or air conditioning apparatus of an automotive vehicle |
FR2859579A1 (en) * | 2003-09-10 | 2005-03-11 | Valeo Climatisation | DEVICE FOR SUPPORTING AN ELECTRIC MOTOR DRIVING A TURBINE, ESPECIALLY FOR AN APPARATUS FOR HEATING, VENTILATION AND / OR AIR CONDITIONING OF A MOTOR VEHICLE |
EP2594847A1 (en) | 2011-11-18 | 2013-05-22 | exodraft a/s | A motor-driven chimney draft system and an impeller for use in the system |
US9599339B2 (en) | 2011-11-18 | 2017-03-21 | Exodraft a/s | Motor-driven chimney draft system and an impeller for use in the system |
FR3012540A1 (en) * | 2013-10-24 | 2015-05-01 | Soler & Palau Res Sl | DEVICE FOR COOLING THE ENGINE OF A FAN |
WO2016039890A3 (en) * | 2014-09-09 | 2016-05-19 | Twin City Fan Companies, Ltd. | Motor cooling device and method |
US11209006B2 (en) | 2014-09-09 | 2021-12-28 | Twin City Fan Companies, Ltd. | Motor cooling device and method |
FR3047524A1 (en) * | 2016-02-09 | 2017-08-11 | Atlantic Climatisation & Ventilation | VENTILATION DEVICE |
Also Published As
Publication number | Publication date |
---|---|
JPS57122647A (en) | 1982-07-30 |
EP0053703A3 (en) | 1982-09-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4766337A (en) | Open drip-proof machinery cooling system using totally enclosed type bearing brackets | |
US6318358B1 (en) | Furnace blower with double sided impeller | |
US5904471A (en) | Cooling means for a motor-driven centrifugal air compressor | |
US5394041A (en) | Electronically commutated motor for dust exhausters, vacuum cleaners and similar devices | |
US6951241B1 (en) | Method for cooling a motor in a blower assembly for a furnance | |
US5839374A (en) | Blower for generating static pressure | |
EP0053703A2 (en) | Blower motor cooling arrangement | |
CA2047576A1 (en) | Draft inducer blower motor mounting and cooling construction | |
EP0893586A3 (en) | Engine-operated generator | |
SU867324A3 (en) | Device for forced air supply radiator blowing | |
JPH08247518A (en) | Exhaust equipment for kitchen | |
US6352431B1 (en) | Furnace inducer motor cooling system | |
US6450874B2 (en) | Thermostatically controlled power draft motor cooling system | |
JP3485782B2 (en) | Suction / blowing machine | |
SE9303599L (en) | Device for cooling an electric motor driven turbo fan assembly | |
US6296478B1 (en) | Method and apparatus for cooling a furnace motor | |
US7604463B2 (en) | Motor cooling and exhaust diluting blower housing with heat shield and noise muffler | |
CN216111376U (en) | Novel efficient energy-saving fan | |
US6382203B1 (en) | Furnace with combustion air-cooled draft inducer fan | |
EP2410258A1 (en) | Space heater of the ventilation type | |
CN2197489Y (en) | High temperature axial flow fan | |
JPH1136983A (en) | Turbine frame structure of turbofan engine | |
JPS572939A (en) | Air conditioning apparatus | |
SU748033A1 (en) | Shaft ventilation revercible plant | |
JPH05312195A (en) | Axial flow blower |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19820906 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CONNELL, JOHN C. |