US20080187437A1 - Air blower having a raised column therein to reduce air flow pressure change and noise - Google Patents
Air blower having a raised column therein to reduce air flow pressure change and noise Download PDFInfo
- Publication number
- US20080187437A1 US20080187437A1 US11/703,142 US70314207A US2008187437A1 US 20080187437 A1 US20080187437 A1 US 20080187437A1 US 70314207 A US70314207 A US 70314207A US 2008187437 A1 US2008187437 A1 US 2008187437A1
- Authority
- US
- United States
- Prior art keywords
- fan assembly
- top face
- cap
- face
- air blower
- 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.)
- Abandoned
Links
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
- F04D29/66—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
- F04D29/663—Sound attenuation
-
- 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
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
-
- 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
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/42—Reducing noise
Definitions
- the present invention relates to an air blower, and more particularly to an air blower having therein a raised column formed on top of a base for mounting thereon a fan assembly such that pressure change as well as noise is reduced.
- a conventionally available air blower generally has a fan assembly mounted inside a casing to stir air flow inside the casing. Once the air is stirred, the air flows directly from the air outlet of the air blower. Since the air flows directly out of the air outlet, the air pressure measured at the air outlet is large. Therefore, an air blower as such is often used in the drying process in a fabrication procedure or a heating process to boost the volume of air supply.
- Respiratory devices are normally provided with an air blower to constantly provide oxygen to whoever in need.
- an air blower When the foregoing air blower is equipped to the respiratory device, the patient using the respiratory device will experience difficulty in breathing in that the pressure of the air flow is so strong that the patient is not able to comfortably exhale or inhale. Furthermore, the noise generated by the air blower is so loud that the patient who is a long-term respiratory device wearer suffers mentally and physically.
- the present invention tends to provide an improved air blower to mitigate the aforementioned problems.
- the primary objective of the present invention is to provide an improved air blower to maintain pressure change within a predetermined range and to reduce noise.
- the air blower of the present invention includes a base, a fan assembly and a cap.
- the base has a column integrally formed on top of the base, an arcuate recess formed between an outer periphery of the column and an inner periphery of the base and a bottom nozzle formed on a side face of the base to communicate with the arcuate recess.
- the fan assembly is securely mounted on a top face of the column and has a conical top face and a flat bottom face with which the fan assembly is securely connected to the top face of the column.
- the cap has a ventilation opening, a top nozzle corresponding to the bottom nozzle and a flared top face corresponding to the conical top face of the fan assembly. Due to the flared top face of the cap and the conical top face of the fan assembly, operation of the air blower is quiet and air flow pressure is constant.
- FIG. 1 is an exploded perspective view of the air blower of the present invention
- FIG. 2 is a perspective view of the air blower with the cap removed.
- FIG. 3 is a schematically cross sectioned view of the air blower of the present invention.
- the in accordance with the present invention include a base ( 10 ), a fan assembly ( 20 ) and a cap ( 30 ).
- the base ( 10 ) has a column ( 11 ) integrally formed on top of the base ( 10 ), an arcuate recess ( 12 ) formed between an outer periphery of the column ( 11 ) and an inner periphery of the base ( 10 ) and a bottom nozzle ( 13 ) formed on a side face of the base ( 10 ) to communicate with the arcuate recess ( 12 ).
- the fan assembly ( 20 ) is securely mounted on a top face of the column ( 11 ) and has a conical top face ( 21 ) and a flat bottom face ( 22 ) with which the fan assembly ( 20 ) is securely connected to the top face of the column ( 11 ).
- Multiple blades ( 23 ) are mounted between the conical top face ( 21 ) and the flat bottom face ( 22 ).
- the cap ( 30 ) has a ventilation opening ( 31 ), a top nozzle ( 32 ) formed on a side face of the cap ( 30 ) and communicating with an interior of the cap ( 30 ) and corresponding to the bottom nozzle ( 13 ) and a flared top face ( 33 ) integrally formed on top of the cap ( 30 ) and corresponding to the conical top face ( 21 ) of the fan assembly ( 20 ).
- the fan assembly ( 20 ) when the air blower of the present invention is assembled, the fan assembly ( 20 ) is mounted on the top face of the column ( 11 ) of the base ( 10 ) via a threaded bolt (A). Due to provision of a bearing device, the fan assembly ( 20 ) is rotatable relative to the column ( 11 ) of the base ( 10 ). Thereafter, the cap ( 30 ) is combined with the base ( 10 ) to enclose the fan assembly ( 20 ) as well as the column ( 11 ). After the combination between the cap ( 30 ) and the base ( 10 ) is finished, the top nozzle ( 32 ) and the bottom nozzle ( 13 ) are combined to become an outlet (B).
- a distance (H) between the conical top face ( 21 ) of the fan assembly ( 20 ) and an inner face of the flared top face ( 33 ) of the cap ( 30 ) is between 0.3-15 mm.
- the blades ( 23 ) of the fan assembly ( 20 ) are facing the inner face of the cap ( 30 ) and away from the outlet (B).
- air flow stirred by the operation of the fan assembly ( 20 ) first is directed to the inner face of the cap ( 30 ). Then following the inner face of the cap ( 30 ), the air flow spirals downward along a space between the outer periphery of the column ( 11 ) and the inner face of the cap ( 30 ). Eventually the air flow escapes from the outlet (B) via the arcuate recess ( 12 ).
- pressure of the air flow out of the outlet (B) is smooth. Furthermore, when the air blower of the present invention is used with a respiratory device and the patient is constantly exhaling, the patient will have no difficulty in exhaling. That is, due to the smooth pressure of the air flow out of the outlet (B), the air exhaled by the patient will be easily ventilated from the ventilation opening ( 31 ) and the pressure change of the outgoing air flow caused by the exhaled air by the patient is within a limited range. Thus the air flow pressure change is maintained within a previously determined range.
- the noise associated with the operation of the fan assembly ( 20 ) is low.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- 1. Field of the Invention
- The present invention relates to an air blower, and more particularly to an air blower having therein a raised column formed on top of a base for mounting thereon a fan assembly such that pressure change as well as noise is reduced.
- 2. Description of the Prior Art
- A conventionally available air blower generally has a fan assembly mounted inside a casing to stir air flow inside the casing. Once the air is stirred, the air flows directly from the air outlet of the air blower. Since the air flows directly out of the air outlet, the air pressure measured at the air outlet is large. Therefore, an air blower as such is often used in the drying process in a fabrication procedure or a heating process to boost the volume of air supply.
- Respiratory devices are normally provided with an air blower to constantly provide oxygen to whoever in need. When the foregoing air blower is equipped to the respiratory device, the patient using the respiratory device will experience difficulty in breathing in that the pressure of the air flow is so strong that the patient is not able to comfortably exhale or inhale. Furthermore, the noise generated by the air blower is so loud that the patient who is a long-term respiratory device wearer suffers mentally and physically.
- To overcome the shortcomings, the present invention tends to provide an improved air blower to mitigate the aforementioned problems.
- The primary objective of the present invention is to provide an improved air blower to maintain pressure change within a predetermined range and to reduce noise.
- In order to accomplish the aforementioned objective, the air blower of the present invention includes a base, a fan assembly and a cap. The base has a column integrally formed on top of the base, an arcuate recess formed between an outer periphery of the column and an inner periphery of the base and a bottom nozzle formed on a side face of the base to communicate with the arcuate recess. The fan assembly is securely mounted on a top face of the column and has a conical top face and a flat bottom face with which the fan assembly is securely connected to the top face of the column. The cap has a ventilation opening, a top nozzle corresponding to the bottom nozzle and a flared top face corresponding to the conical top face of the fan assembly. Due to the flared top face of the cap and the conical top face of the fan assembly, operation of the air blower is quiet and air flow pressure is constant.
- Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is an exploded perspective view of the air blower of the present invention; -
FIG. 2 is a perspective view of the air blower with the cap removed; and -
FIG. 3 is a schematically cross sectioned view of the air blower of the present invention. - With reference to
FIG. 1 , it is noted that the in accordance with the present invention include a base (10), a fan assembly (20) and a cap (30). - The base (10) has a column (11) integrally formed on top of the base (10), an arcuate recess (12) formed between an outer periphery of the column (11) and an inner periphery of the base (10) and a bottom nozzle (13) formed on a side face of the base (10) to communicate with the arcuate recess (12).
- The fan assembly (20) is securely mounted on a top face of the column (11) and has a conical top face (21) and a flat bottom face (22) with which the fan assembly (20) is securely connected to the top face of the column (11). Multiple blades (23) are mounted between the conical top face (21) and the flat bottom face (22).
- The cap (30) has a ventilation opening (31), a top nozzle (32) formed on a side face of the cap (30) and communicating with an interior of the cap (30) and corresponding to the bottom nozzle (13) and a flared top face (33) integrally formed on top of the cap (30) and corresponding to the conical top face (21) of the fan assembly (20).
- With reference to
FIGS. 2 and 3 and still usingFIG. 1 for reference, it is noted that when the air blower of the present invention is assembled, the fan assembly (20) is mounted on the top face of the column (11) of the base (10) via a threaded bolt (A). Due to provision of a bearing device, the fan assembly (20) is rotatable relative to the column (11) of the base (10). Thereafter, the cap (30) is combined with the base (10) to enclose the fan assembly (20) as well as the column (11). After the combination between the cap (30) and the base (10) is finished, the top nozzle (32) and the bottom nozzle (13) are combined to become an outlet (B). Again, due to the conical top face (21) of the fan assembly (20), a distance (H) between the conical top face (21) of the fan assembly (20) and an inner face of the flared top face (33) of the cap (30) is between 0.3-15 mm. Also, the blades (23) of the fan assembly (20) are facing the inner face of the cap (30) and away from the outlet (B). - Because of the raised column (11), air flow stirred by the operation of the fan assembly (20) first is directed to the inner face of the cap (30). Then following the inner face of the cap (30), the air flow spirals downward along a space between the outer periphery of the column (11) and the inner face of the cap (30). Eventually the air flow escapes from the outlet (B) via the arcuate recess (12).
- Because the air flow is first directed to the inner face of the cap (30), pressure of the air flow out of the outlet (B) is smooth. Furthermore, when the air blower of the present invention is used with a respiratory device and the patient is constantly exhaling, the patient will have no difficulty in exhaling. That is, due to the smooth pressure of the air flow out of the outlet (B), the air exhaled by the patient will be easily ventilated from the ventilation opening (31) and the pressure change of the outgoing air flow caused by the exhaled air by the patient is within a limited range. Thus the air flow pressure change is maintained within a previously determined range.
- Still further, because the air flow is directly to the inner face of the cap (30) and the distance between the conical top face (21) and the inner face of the flared top face of the cap (30), the noise associated with the operation of the fan assembly (20) is low.
- It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/703,142 US20080187437A1 (en) | 2007-02-07 | 2007-02-07 | Air blower having a raised column therein to reduce air flow pressure change and noise |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/703,142 US20080187437A1 (en) | 2007-02-07 | 2007-02-07 | Air blower having a raised column therein to reduce air flow pressure change and noise |
Publications (1)
Publication Number | Publication Date |
---|---|
US20080187437A1 true US20080187437A1 (en) | 2008-08-07 |
Family
ID=39676326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/703,142 Abandoned US20080187437A1 (en) | 2007-02-07 | 2007-02-07 | Air blower having a raised column therein to reduce air flow pressure change and noise |
Country Status (1)
Country | Link |
---|---|
US (1) | US20080187437A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116085322A (en) * | 2023-04-11 | 2023-05-09 | 鸿陆智能科技(山东)有限公司 | Vibration and noise reduction sealing structure for magnetic suspension blower |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4679990A (en) * | 1984-12-28 | 1987-07-14 | Matsushita Electric Industrial Co., Ltd. | Electric blower |
US4767285A (en) * | 1986-04-14 | 1988-08-30 | Hitachi, Ltd. | Electric blower |
US5573369A (en) * | 1995-11-08 | 1996-11-12 | The Scott Fetzer Company | Impeller for vacuum cleaner with tapered blades |
US6171078B1 (en) * | 1997-09-04 | 2001-01-09 | Sulzer Electronics Ag | Centrifugal pump |
US20020057967A1 (en) * | 2000-09-28 | 2002-05-16 | Papst-Motoren Gmbh & Co. Kg | Radial blower, in particular, for a breathing apparatus |
US7012346B2 (en) * | 2003-03-07 | 2006-03-14 | Resmed Limited | Low profile d.c. brushless motor for an impeller mechanism or the like |
US20070247009A1 (en) * | 2006-04-20 | 2007-10-25 | Leslie Hoffman | Motor blower unit |
US20080310978A1 (en) * | 2007-06-14 | 2008-12-18 | Viasys Sleep Systems, Llc | Modular CPAP compressor |
USD589138S1 (en) * | 2005-10-28 | 2009-03-24 | Resmed Motor Technologies Inc. | Motor assembly |
-
2007
- 2007-02-07 US US11/703,142 patent/US20080187437A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4679990A (en) * | 1984-12-28 | 1987-07-14 | Matsushita Electric Industrial Co., Ltd. | Electric blower |
US4767285A (en) * | 1986-04-14 | 1988-08-30 | Hitachi, Ltd. | Electric blower |
US5573369A (en) * | 1995-11-08 | 1996-11-12 | The Scott Fetzer Company | Impeller for vacuum cleaner with tapered blades |
US6171078B1 (en) * | 1997-09-04 | 2001-01-09 | Sulzer Electronics Ag | Centrifugal pump |
US20020057967A1 (en) * | 2000-09-28 | 2002-05-16 | Papst-Motoren Gmbh & Co. Kg | Radial blower, in particular, for a breathing apparatus |
US7012346B2 (en) * | 2003-03-07 | 2006-03-14 | Resmed Limited | Low profile d.c. brushless motor for an impeller mechanism or the like |
USD589138S1 (en) * | 2005-10-28 | 2009-03-24 | Resmed Motor Technologies Inc. | Motor assembly |
US20070247009A1 (en) * | 2006-04-20 | 2007-10-25 | Leslie Hoffman | Motor blower unit |
US20080310978A1 (en) * | 2007-06-14 | 2008-12-18 | Viasys Sleep Systems, Llc | Modular CPAP compressor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116085322A (en) * | 2023-04-11 | 2023-05-09 | 鸿陆智能科技(山东)有限公司 | Vibration and noise reduction sealing structure for magnetic suspension blower |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: APEX MEDICAL CORP., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YU, CHING-LIANG;CHENG, YAO-MING;LAI, KUNG-KUAN;REEL/FRAME:018979/0073 Effective date: 20070202 |
|
AS | Assignment |
Owner name: GE BUSINESS FINANCIAL SERVICES INC. (F/K/A MERRILL Free format text: SECURITY AGREEMENT;ASSIGNOR:APEX MEDICAL CORPORATION;REEL/FRAME:022309/0850 Effective date: 20090225 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |
|
AS | Assignment |
Owner name: GE BUSINESS FINANCIAL SERVICES INC., ILLINOIS Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBERS 11701101 AND 11645914 PREVIOUSLY RECORDED ON REEL 022309 FRAME 0850. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT;ASSIGNOR:APEX MEDICAL CORPORATION;REEL/FRAME:043180/0956 Effective date: 20090225 |