GB1275050A - Improvements in and relating to fluid impeller rotors - Google Patents
Improvements in and relating to fluid impeller rotorsInfo
- Publication number
- GB1275050A GB1275050A GB4014768A GB4014768A GB1275050A GB 1275050 A GB1275050 A GB 1275050A GB 4014768 A GB4014768 A GB 4014768A GB 4014768 A GB4014768 A GB 4014768A GB 1275050 A GB1275050 A GB 1275050A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- arm
- fan
- rocker
- operative
- 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.)
- Expired
Links
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
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
- F04D29/362—Blade mountings adjustable during rotation
- F04D29/368—Adjustment by differences of temperature
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0609—Acyclic or carbocyclic compounds containing oxygen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/0618—Acyclic or carbocyclic compounds containing oxygen and nitrogen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/06—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being organic
- G03G5/0601—Acyclic or carbocyclic compounds
- G03G5/062—Acyclic or carbocyclic compounds containing non-metal elements other than hydrogen, halogen, oxygen or nitrogen
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/09—Sensitisors or activators, e.g. dyestuffs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Photoreceptors In Electrophotography (AREA)
Abstract
1275050 Fans EDGAR ALLEN AEREX Ltd 20 Aug 1969 [22 Aug 19681 40147/68 Heading F1C An impeller, e. g. of a fan for a cooling tower, comprises blades 6, Fig. 1, each mounted for angular adjustment sequentially into any of two or more operative pitch settings on repetition of changes of fan speed through minimum values. When the fan is inoperative the blade assumes the position shown, wherein it is releasably held against angular movement by a spring pawl 14 and is biased towards the impeller axis by a spring 12. When the fan is operated, the centrifugal effects move the blade away from the impeller axis and cause an arm 16, extending radially from blade root 7, to move from the position shown in Fig. 3 into engagement with a lobe 20 of a two-position rocker 19, causing the rocker to pivot into the alternative position to that shown whereby it moves the arm and blade angularly and locks them in an operative pitch setting, Fig. 4 (not shown). Subsequent shut-down of the fan causes the blade to move back towards the impeller axis, causing the arm to follow cam wall 24 back to notch 18 without disturbing the rocker. Further operation of the fan therefore causes the arm to engage the other lobe 21 and results in pivoting of the rocker and thus angular adjustment of the blade in the opposite direction to another operative pitch setting. Thus the particular operative pitch setting required is obtained merely by switching on and off a constant speed driving motor or by otherwise effecting a substantial change in fan speed through a minimum value. The value of the operative pitch settings may be adjusted by angularly adjusting a bracket 11 about the blade axis as by bolts (27), Fig. 2 (not shown). The operative pitch settings mayboth be positive, or one may be negative to produce flow reversal. The rocker is releasably held in either of its two positions by a spring pawl (22). In an alternative embodiment, the rocker is omitted and the arm instead follows a circulation cam track, Figs. 6 to 9 (not shown). In another embodiment, the radial arm is replaced by an arm, collar or part-collar which extends axially from the blade root and engages a coaxial cam having, e.g. a saw-tooth track.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1266477D GB1266477A (en) | 1968-06-10 | 1968-06-10 | |
| GB4014768A GB1275050A (en) | 1968-06-10 | 1968-08-22 | Improvements in and relating to fluid impeller rotors |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4014771 | 1968-06-10 | ||
| GB4014768A GB1275050A (en) | 1968-06-10 | 1968-08-22 | Improvements in and relating to fluid impeller rotors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1275050A true GB1275050A (en) | 1972-05-24 |
Family
ID=26264327
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266477D Expired GB1266477A (en) | 1968-06-10 | 1968-06-10 | |
| GB4014768A Expired GB1275050A (en) | 1968-06-10 | 1968-08-22 | Improvements in and relating to fluid impeller rotors |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1266477D Expired GB1266477A (en) | 1968-06-10 | 1968-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB1266477A (en) |
-
1968
- 1968-06-10 GB GB1266477D patent/GB1266477A/en not_active Expired
- 1968-08-22 GB GB4014768A patent/GB1275050A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1266477A (en) | 1972-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |