EP2607714A2 - Propeller Fan and Heat Source Unit including same - Google Patents
Propeller Fan and Heat Source Unit including same Download PDFInfo
- Publication number
- EP2607714A2 EP2607714A2 EP20120198822 EP12198822A EP2607714A2 EP 2607714 A2 EP2607714 A2 EP 2607714A2 EP 20120198822 EP20120198822 EP 20120198822 EP 12198822 A EP12198822 A EP 12198822A EP 2607714 A2 EP2607714 A2 EP 2607714A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blades
- propeller fan
- fan
- recess portions
- lengths
- 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.)
- Granted
Links
- 238000007664 blowing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229920001893 acrylonitrile styrene Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003217 poly(methylsilsesquioxane) Polymers 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/327—Rotors specially for elastic fluids for axial flow pumps for axial flow fans with non identical blades
-
- 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
-
- 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
- F05D2240/00—Components
- F05D2240/20—Rotors
- F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
Definitions
- the present invention relates to a propeller fan and a heat source unit provided with the propeller fan.
- a propeller fan has been used as a fan of a variety of heat source units such as an outdoor unit of an air conditioner, a heat source machine for a water heater with a heat pump, and an outdoor unit of a refrigerating (freezing) machine.
- a known example of such a conventional propeller fan is described in Patent Document 1 (Japanese Patent Laid-Open No. 2005-140081 ).
- the conventional propeller is formed with substantially circular-arc shaped recesses at a blade rear edge portion as air blow-out portion during the rotation of the fan, and the circular-arc shaped recesses are recessed in direction opposite to an air blowing direction, thereby suppressing the generation of the trailing vortices from the blades to reduce noise which will be generated at the time of blowing air.
- Such a conventional propeller fan however, has arc-shaped recess portions which have the same shape and size in a plurality of blades, and accordingly, peak frequencies of blade pitch sound generated by trailing vortices of the respective blades are in consonance with each other, which unfortunately does not effectively reduce the blowing air noise, thus being inconvenient.
- the present invention was conceived in consideration of the above conventional circumstances, and an object thereof is to provide a propeller fan capable of improving the reduction in blowing (or blown) air noise and also provide a heat source unit including such propeller fan.
- a propeller fan having a plurality of blades fixed to a hub on a rotation axis of the fan, wherein each of the blades has a recess portion formed in a blade rear edge section as air blow-out portion during rotation of the fan, the recess portions of the respective blades being recessed in a direction opposite to air blow-out direction and being different in size.
- the recess portions of the blades are formed such that perpendicular lines drawn from line segments joining inner endpoints and outer endpoints of the blade rear edge sections to deepest points of the recess portions are different from each other in lengths thereof.
- the recess portions are formed such that a length of the line segments "a" and lengths of the perpendicular lines "b" of the blades satisfy relationship of "0.1a ⁇ b ⁇ 0.5a” and the lengths "b" in the blades are different from each other.
- a number of the blades is three, and the lengths of the perpendicular lines b1, b2 and b3 of the blades are determined so as to satisfy: "b1 ⁇ b2 ⁇ b3", “0.1a ⁇ b1 ⁇ 0.35a”, “0.15a ⁇ b2 ⁇ 0.4a”, and "0.2a ⁇ b3 ⁇ 0.5a.”
- a heat source unit comprising: a unit housing; a propeller fan of the structures mentioned above and housed in the unit housing; an outdoor heat exchanger housed in the unit housing through which the propeller fan blows air; and a fan motor mounted to the unit housing for driving the propeller fan.
- the heat source unit as outdoor unit of an air conditioner for example, provided with the above propeller fan can attain the same or like effects as mentioned above.
- Fig. 1 is a front view illustrating a propeller fan according to a first embodiment
- Fig. 2 is a perspective view thereof.
- a propeller fan 1 is entirely made of plastic compounded of glass fiber and ASG (Acrylonitrile Styrene Glass) resin, for example, and three blades 4, 5 and 6 having similar shapes are circumferentially installed at substantially regular intervals to a hub 3 on a fan rotation shaft 2 (i.e., rotation axis of a fan motor, not shown), as illustrated in Figs. 1 and 2 .
- Each of the blades 4, 5 and 6 has substantially arc-shaped (arcuate) blade rear edge recess portions 4b, 5b and 6b, respectively, in blade rear edge sections 4a, 5a and 6a (the term "rear edge” is used herein in the fan rotating direction as shown with a black arrow in Fig. 1 ).
- the portions 4b, 5b and 6b are recessed in direction opposite to air flow denoted by a white arrow in Fig. 1 .
- the arcuate recess portions 4b, 5b and 6b formed to the respective blades are different from each other in size. Specifically, if perpendicular lines b1, b2 and b3 are drawn from line segments "a" joining inner endpoints P and outer endpoints Q to deepest points 4R, 5R and 6R of the respective recess portions 4b, 5b and 6b, the lengths of these perpendicular lines b1, b2 and b3 (depths of the recess portions 4b to 6b) are not smaller than 0.1a and not greater than 0.5a (0.1a ⁇ b1, b2, b3 ⁇ 0.5a), and "b1 ⁇ b2 ⁇ b3".
- the recess portions 4b, 5b and 6b are formed so that the lengths of the perpendiculars b1, b2 and b3 and the length of line segments "a" satisfy the following relationship: "0.1a ⁇ b1 ⁇ 0.35a”, “0.15a ⁇ b2 ⁇ 0.4a”, and "0.2a ⁇ b3 ⁇ 0.5a". Further, the line segments "a" in the blades 4, 5 and 6 have the same length.
- the peak frequencies and phases of blade sound generated by trailing vortices from the blades 4, 5 and 6 during the rotation of the fan can be shifted to suppress consonance, and thereby the reduction in blowing (blown) air noise can be improved.
- Fig. 4 shows experimental data on air blowing performance of the propeller fan 1 illustrated in Fig. 1 .
- test models #1 to #6 were prepared, which test models each include its own propeller fan 1 of a required size, such as a diameter of 420 mm.
- test models #1 to #6 were then operated at 800 rpm with an amount of air being 2080 m 3 /h, and a blown air noise value (dB(A)) was measured at a position being 1 m (1 meter) apart from each fan in the air blowing direction.
- a three-bladed propeller fan that is a conventional model, was also prepared.
- the three recess portions 4b to 6b of the fan were the same in depth (b1, b2, b3 : 0.2a), shape, and size.
- the model was operated under the same condition as that of the first embodiment and a blown air noise value (dB(A)) and the like were also shown in Fig. 4 as conventional fan in the table.
- Fig. 5 shows the values of air noise blown from the propeller fan 1 of the present embodiment and the conventional model shown in Fig. 4
- a curve Na represents the one of the present embodiment
- a substantially straight line Nb represents the conventional model fan.
- Fig. 5 also shows relationship between dimension ratios of the perpendiculars b1, b2, and b3 (b1 : b2 : b3) denoting the depths of the recess portions 4b, 5b, and 6b, respectively, and the noise values dB(A) during the rotation of the fans.
- a smallest value of blown air noise, 46 dB was given when a dimension ratio of the perpendiculars b1, b2, and b3 was "0.2a : 0.23a : 0.26a.”
- the test model #3 whose b1 was 0.2a, b2 was 0.23a, and b3 was 0.26a, resulted in the smallest value of blown air noise.
- the conventional model fan resulted in a constant noise value of about 47.2 dB(A).
- the blown air noise does not become greater than about 46.9 dB(A), and hence, the noise is smaller than the noise value Nb, about 47.2 dB(A), of the conventional model denoted by the substantially straight line shown in Fig. 5 .
- an input power of the motor is also smaller than that of the conventional model as illustrated in Fig. 4 , thereby also improving the motor efficiency. Accordingly, it is considered to be preferable that the range of the perpendicular lines is set as mentioned above.
- Fig. 6 is a schematic cross-sectional view illustrating an outdoor unit 11 of an air conditioner as a heat source unit according to the present second embodiment provided with the propeller fan of the structure mentioned above.
- the outdoor unit 11 of the air conditioner has an outdoor heat exchanger 13 having a planar L-shape, the propeller fan 1 according to the first embodiment, a compressor 14, a four-way valve 15 and a controller 16 such as an inverter in a unit housing 12.
- reference numeral 17 denotes a partition plate separating a space inside the outdoor unit 1 into a space for the propeller fan 1 and the outdoor heat exchanger 13, and a space for the compressor 14.
- Reference numeral 18 denotes a support member supporting a fan motor 19 that drives the propeller fan 1.
- the outdoor unit 11 includes the propeller fan 1, which can improve the reduction in noise of the blown air as described with reference to the above first embodiment, the outdoor unit 11 can achieve the improved reduction in the blown air noise.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Other Air-Conditioning Systems (AREA)
- Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
Abstract
Description
- The present invention relates to a propeller fan and a heat source unit provided with the propeller fan.
- Conventionally, a propeller fan has been used as a fan of a variety of heat source units such as an outdoor unit of an air conditioner, a heat source machine for a water heater with a heat pump, and an outdoor unit of a refrigerating (freezing) machine. A known example of such a conventional propeller fan is described in Patent Document 1 (Japanese Patent Laid-Open No.
2005-140081 - The conventional propeller is formed with substantially circular-arc shaped recesses at a blade rear edge portion as air blow-out portion during the rotation of the fan, and the circular-arc shaped recesses are recessed in direction opposite to an air blowing direction, thereby suppressing the generation of the trailing vortices from the blades to reduce noise which will be generated at the time of blowing air.
- Such a conventional propeller fan, however, has arc-shaped recess portions which have the same shape and size in a plurality of blades, and accordingly, peak frequencies of blade pitch sound generated by trailing vortices of the respective blades are in consonance with each other, which unfortunately does not effectively reduce the blowing air noise, thus being inconvenient.
- The present invention was conceived in consideration of the above conventional circumstances, and an object thereof is to provide a propeller fan capable of improving the reduction in blowing (or blown) air noise and also provide a heat source unit including such propeller fan.
- The above and other objects can be achieved according to the present invention by providing, in one aspect, a propeller fan having a plurality of blades fixed to a hub on a rotation axis of the fan, wherein each of the blades has a recess portion formed in a blade rear edge section as air blow-out portion during rotation of the fan, the recess portions of the respective blades being recessed in a direction opposite to air blow-out direction and being different in size.
- In a preferred embodiment of the above aspect, It may be desired that the recess portions of the blades are formed such that perpendicular lines drawn from line segments joining inner endpoints and outer endpoints of the blade rear edge sections to deepest points of the recess portions are different from each other in lengths thereof.
- It may be also desired that the recess portions are formed such that a length of the line segments "a" and lengths of the perpendicular lines "b" of the blades satisfy relationship of "0.1a ≤ b ≤ 0.5a" and the lengths "b" in the blades are different from each other.
- It may be also preferred that a number of the blades is three, and the lengths of the perpendicular lines b1, b2 and b3 of the blades are determined so as to satisfy: "b1 ≤ b2 < b3", "0.1a ≤ b1 ≤ 0.35a", "0.15a ≤ b2 ≤ 0.4a", and "0.2a ≤ b3 ≤ 0.5a."
- In another aspect of the present invention, there is also provided a heat source unit comprising: a unit housing; a propeller fan of the structures mentioned above and housed in the unit housing; an outdoor heat exchanger housed in the unit housing through which the propeller fan blows air; and a fan motor mounted to the unit housing for driving the propeller fan.
- According to the propeller fan of the structures mentioned above, blown or blowing air noise can be effectively reduced, and by taking particular size or dimensions of the recess portions formed to the fan blades, the above effects can be further improved. The heat source unit as outdoor unit of an air conditioner, for example, provided with the above propeller fan can attain the same or like effects as mentioned above.
- The nature and further characteristic features of the present invention will be made clearer from the following descriptions made with reference to the accompanying drawings.
- In the accompanying drawings
-
Fig. 1 is a front view illustrating a propeller fan according to an embodiment of the present invention; -
Fig. 2 is a perspective view illustrating the propeller fan inFig. 1 ; -
Fig. 3 is a view illustrating a blade rear edge section, in an enlarged scale, of the propeller fan inFig. 1 ; -
Fig. 4 is a table of experimental data on air blowing performance of the three-bladed propeller fan illustrated inFig. 1 ; -
Fig. 5 is a graph illustrating the relative relationship between dimensions of blade rear edge recess portions and blowing air noises in the experimental data shown inFig. 4 ; and -
Fig. 6 is a schematic cross-sectional view illustrating a heat source unit, according to another embodiment of the present invention, including the three-bladed propeller fan inFig. 1 . - Embodiments of the present invention will be described in detail hereunder with reference to the accompanying drawings. Further, it is to be noted that the same or corresponding components or parts are denoted by adding the same reference numerals throughout the drawings.
-
Fig. 1 is a front view illustrating a propeller fan according to a first embodiment, andFig. 2 is a perspective view thereof. - A
propeller fan 1 is entirely made of plastic compounded of glass fiber and ASG (Acrylonitrile Styrene Glass) resin, for example, and threeblades hub 3 on a fan rotation shaft 2 (i.e., rotation axis of a fan motor, not shown), as illustrated inFigs. 1 and2 . Each of theblades portions rear edge sections Fig. 1 ). Theportions Fig. 1 . - The arcuate recess
portions deepest points respective recess portions recess portions 4b to 6b) are not smaller than 0.1a and not greater than 0.5a (0.1a ≤ b1, b2, b3 ≤ 0.5a), and "b1 < b2 < b3". - That is, different lengths of the perpendicular lines b1, b2 and b3 lead to different sizes of the
recess portions - Furthermore, in the present embodiment, the
recess portions blades - According to the present embodiment of the characters mentioned above, since the difference in the lengths of the perpendicular lines b1, b2 and b3 in the
recess portions recess portions blades -
Fig. 4 shows experimental data on air blowing performance of thepropeller fan 1 illustrated inFig. 1 . - In the experiment, first to sixth
test models # 1 to #6 were prepared, which test models each include itsown propeller fan 1 of a required size, such as a diameter of 420 mm. The dimensions of the perpendicular lines b1, b2 and b3 indicating the depths of therecess portions - These six
test models # 1 to #6 were then operated at 800 rpm with an amount of air being 2080 m3/h, and a blown air noise value (dB(A)) was measured at a position being 1 m (1 meter) apart from each fan in the air blowing direction. - Further, in this experiment, a three-bladed propeller fan, that is a conventional model, was also prepared. The three
recess portions 4b to 6b of the fan were the same in depth (b1, b2, b3 : 0.2a), shape, and size. The model was operated under the same condition as that of the first embodiment and a blown air noise value (dB(A)) and the like were also shown inFig. 4 as conventional fan in the table. -
Fig. 5 shows the values of air noise blown from thepropeller fan 1 of the present embodiment and the conventional model shown inFig. 4 , and inFig. 5 , a curve Na represents the one of the present embodiment and a substantially straight line Nb represents the conventional model fan. -
Fig. 5 also shows relationship between dimension ratios of the perpendiculars b1, b2, and b3 (b1 : b2 : b3) denoting the depths of therecess portions test model # 3, whose b1 was 0.2a, b2 was 0.23a, and b3 was 0.26a, resulted in the smallest value of blown air noise. On the other hand, the conventional model fan resulted in a constant noise value of about 47.2 dB(A). - As the lengths of the perpendicular lines b1, b2 and b3 were gradually decreased or increased from the minimum value of the blown air noise, a value of the blown air noise gradually increases.
- However, if the lengths of the perpendicular lines b1, b2 and b3 satisfy the following relationship of "b1 < b2 < b3", "0.1a ≤ b1 ≤ 0.35a", "0.15a ≤ b2 ≤ 0.4a", and "0.2a ≤ b3 ≤ 0.5a", the blown air noise does not become greater than about 46.9 dB(A), and hence, the noise is smaller than the noise value Nb, about 47.2 dB(A), of the conventional model denoted by the substantially straight line shown in
Fig. 5 . In addition, an input power of the motor is also smaller than that of the conventional model as illustrated inFig. 4 , thereby also improving the motor efficiency. Accordingly, it is considered to be preferable that the range of the perpendicular lines is set as mentioned above. -
Fig. 6 is a schematic cross-sectional view illustrating anoutdoor unit 11 of an air conditioner as a heat source unit according to the present second embodiment provided with the propeller fan of the structure mentioned above. - The
outdoor unit 11 of the air conditioner has anoutdoor heat exchanger 13 having a planar L-shape, thepropeller fan 1 according to the first embodiment, acompressor 14, a four-way valve 15 and acontroller 16 such as an inverter in aunit housing 12. - In
Fig. 6 ,reference numeral 17 denotes a partition plate separating a space inside theoutdoor unit 1 into a space for thepropeller fan 1 and theoutdoor heat exchanger 13, and a space for thecompressor 14.Reference numeral 18 denotes a support member supporting afan motor 19 that drives thepropeller fan 1. - Since the
outdoor unit 11 includes thepropeller fan 1, which can improve the reduction in noise of the blown air as described with reference to the above first embodiment, theoutdoor unit 11 can achieve the improved reduction in the blown air noise. - It is to be noted that although the present invention was explained hereinbefore with reference to the some embodiments, the present invention is not limited to such embodiments, and many other changes and modifications or alternations, particularly, in type, size, shape or like, may be made without departing from the sprits or scopes of the appended claims.
- It is explicitly stated that all features disclosed in the description and/or the claims are intended to be disclosed separately and independently from each other for the purpose of original disclosure as well as for the purpose of restricting the claimed invention independent of the composition of the features in the embodiments and/or the claims. It is explicitly stated that all value ranges or indications of groups of entities disclose every possible intermediate value or intermediate entity for the purpose of original disclosure as well as for the purpose of restricting the claimed invention, in particular as limits of value ranges.
Claims (5)
- A propeller fan (1) having a plurality of blades (4, 5, 6) fixed to a hub (3) on a rotation axis (2) of the fan (1),
wherein each of the blades (4, 5, 6) has a recess portion (4b, 5b, 6b) formed in a blade rear edge section (4a, 5a, 6a) as air blow-out portion during rotation of the fan (1), the recess portions (4b, 5b, 6b) of the respective blades (4, 5, 6) being recessed in a direction opposite to air blow-out direction and being different in size. - The propeller fan (1) according to claim 1, wherein the recess portions (4b, 5b, 6b) of the blades (4, 5, 6) are formed such that perpendicular lines (b1, b2, b3) drawn from line segments (a) joining inner endpoints (P) and outer endpoints (Q) of the blade rear edge sections (4a, 5a, 6a) to deepest points (4R, 5R, 6R) of the recess portions (4b, 5b, 6b) are different from each other in lengths thereof.
- The propeller fan (3) according to claim 1 or 2, wherein the recess portions (4b, 5b, 6b) are formed such that a length of the line segments "a" and lengths of the perpendicular lines "b" of the blades (4, 5, 6) satisfy relationship of "0.1a ≤ b ≤ 0.5a" and the lengths "b" in the blades (4, 5, 6) are different from each other.
- The propeller fan (1) according to any one of claims 1 to 3, wherein a number of the blades (4, 5, 6) is three, and the lengths of the perpendicular lines b1, b2 and b3 of the blades (4, 5, 6) are determined so as to satisfy: "b1 < b2 < b3", "0.1a ≤ b1 ≤ 0.35a", "0.15a ≤ b2 ≤ 0.4a", and "0.2a ≤ b3 ≤ 0.5a".
- A heat source unit (11)comprising:a unit housing (12);a propeller fan (1) according to any one of claims 1 to 4 housed in the unit housing (12);an outdoor heat exchanger (13) housed in the unit housing (12) through which the propeller fan (1) blows air;a fan motor (19) mounted to the unit housing (12) for driving the propeller fan (1).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011280216A JP2013130125A (en) | 2011-12-21 | 2011-12-21 | Propeller fan and heat source unit using the same |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2607714A2 true EP2607714A2 (en) | 2013-06-26 |
EP2607714A3 EP2607714A3 (en) | 2014-08-13 |
EP2607714B1 EP2607714B1 (en) | 2020-07-08 |
Family
ID=47520782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12198822.4A Active EP2607714B1 (en) | 2011-12-21 | 2012-12-21 | Propeller Fan and Heat Source Unit including same |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2607714B1 (en) |
JP (1) | JP2013130125A (en) |
CN (1) | CN203098387U (en) |
DK (1) | DK2607714T3 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140086754A1 (en) * | 2012-09-24 | 2014-03-27 | Samsung Electronics Co., Ltd. | Propeller fan |
CN104343730A (en) * | 2013-08-08 | 2015-02-11 | 三菱电机株式会社 | Axial flow fan and air-conditioning apparatus having the same |
CN107023513A (en) * | 2017-06-16 | 2017-08-08 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
EP3343045A4 (en) * | 2015-11-30 | 2018-10-03 | Samsung Electronics Co., Ltd. | Blower fan and air conditioner having same |
CN110678659A (en) * | 2017-05-25 | 2020-01-10 | 三菱电机株式会社 | Propeller fan and refrigeration cycle device |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106766045B (en) * | 2016-11-15 | 2019-12-10 | 广东美的制冷设备有限公司 | Air supply assembly and air conditioner |
CN106766046A (en) * | 2016-11-15 | 2017-05-31 | 广东美的制冷设备有限公司 | Air-supply assembly and air-conditioner |
CN107178512A (en) * | 2017-07-27 | 2017-09-19 | 张兴军 | Propeller type fan and mold for forming |
TWI658214B (en) | 2017-08-25 | 2019-05-01 | 宏碁股份有限公司 | Heat dissipation blade and heat dissipation fan |
CN109578331B (en) * | 2017-09-29 | 2021-10-22 | 宏碁股份有限公司 | Radiating fan blade and radiating fan |
CN109028350B (en) * | 2018-07-25 | 2021-03-12 | 深圳市中航楼宇科技有限公司 | Outdoor airflow discharge device and discharge method for environment-friendly air conditioner refrigeration |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005140081A (en) | 2003-11-10 | 2005-06-02 | Toshiba Kyaria Kk | Propeller fan and air-conditioner outdoor unit using the same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5115210A (en) * | 1974-07-02 | 1976-02-06 | Rotoron Inc | Zatsuongenshono fuan |
JP2002054596A (en) * | 2000-08-10 | 2002-02-20 | Japan Servo Co Ltd | Axial-flow fan |
JP2003065295A (en) * | 2001-08-29 | 2003-03-05 | Toshiba Kyaria Kk | Axial flow blower |
JP4003541B2 (en) * | 2002-05-30 | 2007-11-07 | 三菱電機株式会社 | Blower |
DE102009028125A1 (en) * | 2009-07-30 | 2011-02-03 | Robert Bosch Gmbh | Entry geometry for semi-axial fan wheels |
-
2011
- 2011-12-21 JP JP2011280216A patent/JP2013130125A/en active Pending
-
2012
- 2012-12-20 CN CN2012207118941U patent/CN203098387U/en not_active Expired - Lifetime
- 2012-12-21 DK DK12198822.4T patent/DK2607714T3/en active
- 2012-12-21 EP EP12198822.4A patent/EP2607714B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005140081A (en) | 2003-11-10 | 2005-06-02 | Toshiba Kyaria Kk | Propeller fan and air-conditioner outdoor unit using the same |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20140086754A1 (en) * | 2012-09-24 | 2014-03-27 | Samsung Electronics Co., Ltd. | Propeller fan |
US9556881B2 (en) * | 2012-09-24 | 2017-01-31 | Samsung Electronics Co., Ltd. | Propeller fan |
CN104343730A (en) * | 2013-08-08 | 2015-02-11 | 三菱电机株式会社 | Axial flow fan and air-conditioning apparatus having the same |
EP2835538A3 (en) * | 2013-08-08 | 2015-08-05 | Mitsubishi Electric Corporation | Axial flow fan and air-conditioning apparatus having the same |
US9605686B2 (en) | 2013-08-08 | 2017-03-28 | Mitsubishi Electric Corporation | Axial flow fan and air-conditioning apparatus having the same |
CN104343730B (en) * | 2013-08-08 | 2017-04-12 | 三菱电机株式会社 | Axial flow fan and air-conditioning apparatus having the same |
EP3343045A4 (en) * | 2015-11-30 | 2018-10-03 | Samsung Electronics Co., Ltd. | Blower fan and air conditioner having same |
US11041506B2 (en) | 2015-11-30 | 2021-06-22 | Samsung Electronics Co., Ltd. | Blower fan and air conditioner having same |
CN110678659A (en) * | 2017-05-25 | 2020-01-10 | 三菱电机株式会社 | Propeller fan and refrigeration cycle device |
EP3633208A4 (en) * | 2017-05-25 | 2020-06-17 | Mitsubishi Electric Corporation | Propeller fan and refrigerating cycle apparatus |
CN110678659B (en) * | 2017-05-25 | 2021-11-16 | 三菱电机株式会社 | Propeller fan and refrigeration cycle device |
CN107023513A (en) * | 2017-06-16 | 2017-08-08 | 广东美的制冷设备有限公司 | Axial-flow windwheel and air conditioner |
Also Published As
Publication number | Publication date |
---|---|
CN203098387U (en) | 2013-07-31 |
DK2607714T3 (en) | 2020-08-10 |
EP2607714A3 (en) | 2014-08-13 |
JP2013130125A (en) | 2013-07-04 |
EP2607714B1 (en) | 2020-07-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2607714A2 (en) | Propeller Fan and Heat Source Unit including same | |
CN107795516B (en) | Axial fan and outdoor unit | |
US9512726B2 (en) | Impeller and method for driving fluids using the same | |
JP4467952B2 (en) | Propeller fan, outdoor unit for air conditioner using this | |
JP2011247246A (en) | Axial fan | |
JP2009203897A (en) | Multi-blade blower | |
CN209877119U (en) | Indoor machine of floor air conditioner | |
JP5716766B2 (en) | Air conditioner | |
CN209840264U (en) | Indoor machine of floor air conditioner | |
KR101251130B1 (en) | Propeller fan | |
EP3382290B1 (en) | Air conditioner | |
JP3918207B2 (en) | Air conditioner | |
JP2007085356A (en) | Air conditioner | |
CN110506164B (en) | Propeller fan and outdoor unit for air conditioner | |
WO2018179075A1 (en) | Propeller fan | |
WO2022191034A1 (en) | Propeller fan and refrigeration device | |
AU2006270723A1 (en) | Blower and air conditioner outdoor unit with the blower | |
EP2905474B1 (en) | Propeller fan | |
JP2001082389A (en) | Vane design method for axial blower and axial blower | |
JPS5922080B2 (en) | Axial flow fan for air conditioner | |
CN111442401B (en) | Indoor machine of floor air conditioner | |
US20240035486A1 (en) | Centrifugal fan | |
CN111442395B (en) | Indoor machine of floor air conditioner | |
CN111442404B (en) | Indoor machine of floor air conditioner | |
KR101826348B1 (en) | Cross-flow fan and air conditioner equipped therewith |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
17P | Request for examination filed |
Effective date: 20121221 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
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 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F04D 29/66 20060101ALI20140708BHEP Ipc: F04D 29/38 20060101AFI20140708BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20170807 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20200313 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1288766 Country of ref document: AT Kind code of ref document: T Effective date: 20200715 Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602012071109 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20200804 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1288766 Country of ref document: AT Kind code of ref document: T Effective date: 20200708 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201008 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201009 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201008 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201109 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20201108 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602012071109 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
26N | No opposition filed |
Effective date: 20210409 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201221 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201221 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20200708 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20231102 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20231108 Year of fee payment: 12 Ref country code: DK Payment date: 20231214 Year of fee payment: 12 Ref country code: DE Payment date: 20231024 Year of fee payment: 12 |