EP1242744B1 - Pump housing - Google Patents
Pump housing Download PDFInfo
- Publication number
- EP1242744B1 EP1242744B1 EP00982243A EP00982243A EP1242744B1 EP 1242744 B1 EP1242744 B1 EP 1242744B1 EP 00982243 A EP00982243 A EP 00982243A EP 00982243 A EP00982243 A EP 00982243A EP 1242744 B1 EP1242744 B1 EP 1242744B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- tabs
- fan
- recesses
- ear
- 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 - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
Definitions
- This invention relates to pumps such as compressors and vacuum pumps, and in particular to a housing for a pump as specified in the preamble of claim 1 and is known e.g. from DE-A-4 337 631.
- Reciprocating piston or diaphragm pumps typically have a metal housing, for example, a cast aluminum alloy, in which bearings are mounted which journal the shaft which drives the pump.
- a metal housing is needed, particularly for larger pumps, to withstand the forces of driving the piston or diaphragm and containing the pressure exerted in the compression chamber of the pump.
- a rotary electric motor is usually used to drive these pumps and the motor requires cooling.
- the motor is provided between two housings, each of which is separate from the other and houses one compression chamber.
- the shaft of the motor is a through shaft so that each end of the shaft mounts one of the pistons or diaphragms that work to vary the volume of the compression chamber in the housing at the corresponding end of the shaft.
- a rotary fan blade is mounted to each end of the shaft to draw a flow of cooling air into the housing at that end and blow it onto the rotor and stator coils of the motor.
- the part of the housing in which the rotary fan blade is mounted circular and just slightly larger than the diameter of the fan blade.
- the clearance between the tips of the fan blades and the interior housing surface should be as small as possible because, if not, the air drawn into the housing by the fan blades will simply blow back out past the tips of the blade, and not be directed over the coils of the motor.
- the pump is contained inside of a separate enclosure, it may be permissible to leave the end of the housing at which the fan blade is mounted open.
- the end of the housing must be closed with a cover which permits air to be drawn into the housing, but prevents the insertion of larger objects or fingers. This cover, typically called a fan guard, should not deleteriously affect the operation of the fan nor add to the lateral size or detract from the appearance of the fan.
- the invention provides a fan guard which easily attaches to the housing, without requiring any special machining of the housing, does not increase the internal clearance for the fan and does not add to the lateral size of the housing or detract from its appearance.
- the fan guard is perforated so as to permit the inflow of air to the housing past it, and has peripheral tabs which extend into the housing in a direction parallel to the axis of the shaft.
- the tabs have a crescent-shaped profile, and similarly shaped recesses are formed in the housing.
- the crescent-shaped recesses of the housing have holes formed in them.
- Each tab of the fan guard has an ear which snaps into the hole in the corresponding recess to hold the fan guard in place over the end of the housing.
- the recesses and holes are cast-in features of the housing.
- the holes which are formed in the recesses preferably have a horizontal axis to permit them to be formed during the casting process, since inserts in the die move in this direction, which is perpendicular to the parting line of the casting.
- the axes of all the holes in the recesses are parallel to one another.
- Each ear also has an axis, which is the major direction it extends from the tab, and this axis of the ear generally corresponds to the axis of the hole, so that the ear axis is parallel to the hole axis when the ear is received in the hole.
- a ramped surface is preferably provided on the distal end of the ear, to flex the tab inwardly upon insertion of the fan guard in the end of the housing, and the proximate end of the ear is squared off so that the ear snaps into the hole and the near side of the hole is caught by the proximal end of the ear when the snap-in fan guard tabs are inserted into the end of the housing.
- the crescent-shaped tabs which are also referred to herein as D-shaped, are preferably somewhat smaller than the similarly shaped recesses in the housing so that the inward surface of the tabs approximates a continuation of the inner surface of the housing so as not to interfere with the fan blades or require an excessive clearance between the tips of the fan blades and the interior of the housing. It is preferred that the inner surface of the tab be somewhat recessed within the crescent-shaped recess so that if the ear is not fully engaged in the hole, or if the fan guard is removed with the fan turning, the tabs do not flex so far inwardly as to interfere with the tips of the blade.
- tabs and corresponding recesses around the periphery of the crank case portion of the housing may be provided.
- four tabs and corresponding recesses are provided.
- the tabs and recesses are provided with two on each side of the housing and the two on each side spaced as far apart as possible, with one toward the top of the crank case portion and the other toward the bottom of the crank case portion on each side. Spacing the holes apart vertically helps provide a secure fixation.
- the fan guard will generally be round, but it is desirable to provide at least one feature which extends radially from the fan guard or otherwise serves to position the fan guard angularly in the proper location relative to the housing. This feature may fit into a similarly shaped opening in the compression chamber portion of the housing without adding to the width or height of the compressor.
- the ears and holes have their axes horizontal, and the housingrecesses are arranged symmetrically on opposite sides ofa vertical axis, the holes and ears on opposite sides of the housing at the top of the housing will be along one horizontal axis and at the bottom of the housing will be along a different horizontal axis.
- the tabs at the top press against the housing opposite to one another and the tabs at the bottom press against the housing opposite to one another to hold the fan guard in position.
- Fig. 1 illustrates a pump 10 of the invention having a motor 12 with a housing 14 at one end and a housing 16 at the other.
- the housings 14 and 16 are cast of aluminum alloy and are identical.
- the pump 10 also includes fan guards 40, one at each end, which are identical to one another.
- the motor 12 has a shaft 42 which extends through it and into both housings 14 and 16, nearly to the end of each respective housing.
- Each end of the shaft 42 mounts a rotary fan blade 44 which is rotated by the shaft 42 in a direction so as to draw air into each respective housing 14 and 16 and direct it over the coils of the motor 12.
- the housing of the motor 12 is provided with holes to provide for the exhaust of cooling air and additional ventilation slots adjacent to the motor may be provided in the housings 14 and 16.
- the housings 14 and 16 mount bearings (bearings not shown) which journal the shaft 42.
- the housings 14 and 16 also have openings in them which provide for the axial through-flow of air so that air moved by the fan blades 44 reaches the coils of the motor 12.
- Each fan guard 40 is perforated, having radial spokes with spaced circular ribs running between them to provide for the inlet of cooling air past the guard 40.
- Each guard 40 has a rim 50 which on its inner side defines a groove 52 in which a lip 54 of the adjacent housing 14, 16 is received to help locate the fan guard 40 radially relative to the housing.
- a projection 56 extends radially from the rim 50 and fits into opening 58 which is formed in the compression chamber portion 34 or 36 of each housing 14 or 16.
- the projection 56 helps locate the fan guard 40 angularly relative to the housing 14 or 16 to which it is assembled, and also provides a nameplate.
- the fan guard 40 is made of a suitable resilient plastic resin, such as a polyester polymer.
- Each guard 40 has four tabs 60, each in a different quadrant, which extend parallel to the shaft 42 into the end of the respective crank case portion 62 or 64 of the corresponding housing 14 or 16.
- each tab 60 is D- or crescent-shaped generally and fits into a similarly shaped, but slightly larger recess 66 which is formed in the respective housing 14 or 16 at a corresponding angular location and also runs parallel to the shaft 42.
- Each tab 60 has an ear 68 which snaps into a hole 70 formed in the recess 66.
- the recess 66 and hole 70 are both features which can readily be cast in features by persons of ordinary skill in the art.
- the inner surface 72 of the tab 60 is slightly recessed from the circular surface 74 of the housing, which circular surface 74 is only slightly spaced from the tips of the fan blade 44.
- the surface 72 is so recessed so that if the guard 40 is removed from the housing with the fan running, the tab 60 will not be moved so far inwardly as to interfere with the rotating fan blade.
- the tab 60 since the tab 60 is recessed from the surface 74, the tab 60 does not increase the required amount of clearance between the tips of the fan blade and housing.
- FIG. 3 there are two tabs 60 and corresponding recesses 66 in the upper portion of the crank case and two in the lower portion.
- the two in the upper portion are both aligned along a single horizontal line 80 and in the lower portion are aligned along horizontal line 82.
- the recesses 66 and arcuate surfaces of the tabs 60 are symmetrical about lines which are radial to the shaft 42 along lines 84 and 86, the ears 68 and holes 70 are not, being aligned along the horizontal lines 80 and 82, which are perpendicular to the major parting line of the housing 14, 16 casting.
- each tab 60 has a ramped lead-in, or distal, surface 90 which serves to flex the tab 60 inwardly when the guard is inserted in the housing.
- Each ear 68 also has a proximal surface 92 which is at a right angle or nearly right angle to outer side 94 of the ear 68 so as to provide for a snap-in connection of the ear 68 in the hole 70.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Rotary Pumps (AREA)
Description
- This invention relates to pumps such as compressors and vacuum pumps, and in particular to a housing for a pump as specified in the preamble of claim 1 and is known e.g. from DE-A-4 337 631.
- Reciprocating piston or diaphragm pumps typically have a metal housing, for example, a cast aluminum alloy, in which bearings are mounted which journal the shaft which drives the pump. A metal housing is needed, particularly for larger pumps, to withstand the forces of driving the piston or diaphragm and containing the pressure exerted in the compression chamber of the pump.
- A rotary electric motor is usually used to drive these pumps and the motor requires cooling. In one such pump, the motor is provided between two housings, each of which is separate from the other and houses one compression chamber. The shaft of the motor is a through shaft so that each end of the shaft mounts one of the pistons or diaphragms that work to vary the volume of the compression chamber in the housing at the corresponding end of the shaft. Further out from where the piston or diaphragm is mounted, a rotary fan blade is mounted to each end of the shaft to draw a flow of cooling air into the housing at that end and blow it onto the rotor and stator coils of the motor.
- For cooling efficiency, it is desirable to make the part of the housing in which the rotary fan blade is mounted circular and just slightly larger than the diameter of the fan blade. The clearance between the tips of the fan blades and the interior housing surface should be as small as possible because, if not, the air drawn into the housing by the fan blades will simply blow back out past the tips of the blade, and not be directed over the coils of the motor. For applications in which the pump is contained inside of a separate enclosure, it may be permissible to leave the end of the housing at which the fan blade is mounted open. However, if the pump is going to be exposed or sold as a stand-alone product, the end of the housing must be closed with a cover which permits air to be drawn into the housing, but prevents the insertion of larger objects or fingers. This cover, typically called a fan guard, should not deleteriously affect the operation of the fan nor add to the lateral size or detract from the appearance of the fan.
- The invention provides a fan guard which easily attaches to the housing, without requiring any special machining of the housing, does not increase the internal clearance for the fan and does not add to the lateral size of the housing or detract from its appearance. The fan guard is perforated so as to permit the inflow of air to the housing past it, and has peripheral tabs which extend into the housing in a direction parallel to the axis of the shaft. The tabs have a crescent-shaped profile, and similarly shaped recesses are formed in the housing. The crescent-shaped recesses of the housing have holes formed in them. Each tab of the fan guard has an ear which snaps into the hole in the corresponding recess to hold the fan guard in place over the end of the housing.
- In a preferred form, the recesses and holes are cast-in features of the housing. The holes which are formed in the recesses preferably have a horizontal axis to permit them to be formed during the casting process, since inserts in the die move in this direction, which is perpendicular to the parting line of the casting. As a consequence, the axes of all the holes in the recesses are parallel to one another. Each ear also has an axis, which is the major direction it extends from the tab, and this axis of the ear generally corresponds to the axis of the hole, so that the ear axis is parallel to the hole axis when the ear is received in the hole. A ramped surface is preferably provided on the distal end of the ear, to flex the tab inwardly upon insertion of the fan guard in the end of the housing, and the proximate end of the ear is squared off so that the ear snaps into the hole and the near side of the hole is caught by the proximal end of the ear when the snap-in fan guard tabs are inserted into the end of the housing.
- The crescent-shaped tabs, which are also referred to herein as D-shaped, are preferably somewhat smaller than the similarly shaped recesses in the housing so that the inward surface of the tabs approximates a continuation of the inner surface of the housing so as not to interfere with the fan blades or require an excessive clearance between the tips of the fan blades and the interior of the housing. It is preferred that the inner surface of the tab be somewhat recessed within the crescent-shaped recess so that if the ear is not fully engaged in the hole, or if the fan guard is removed with the fan turning, the tabs do not flex so far inwardly as to interfere with the tips of the blade.
- Any number of tabs and corresponding recesses around the periphery of the crank case portion of the housing may be provided. In a preferred form, four tabs and corresponding recesses are provided. The tabs and recesses are provided with two on each side of the housing and the two on each side spaced as far apart as possible, with one toward the top of the crank case portion and the other toward the bottom of the crank case portion on each side. Spacing the holes apart vertically helps provide a secure fixation.
- The fan guard will generally be round, but it is desirable to provide at least one feature which extends radially from the fan guard or otherwise serves to position the fan guard angularly in the proper location relative to the housing. This feature may fit into a similarly shaped opening in the compression chamber portion of the housing without adding to the width or height of the compressor.
- It is also noted that if the ears and holes have their axes horizontal, and the housingrecesses are arranged symmetrically on opposite sides ofa vertical axis, the holes and ears on opposite sides of the housing at the top of the housing will be along one horizontal axis and at the bottom of the housing will be along a different horizontal axis. Thus, the tabs at the top press against the housing opposite to one another and the tabs at the bottom press against the housing opposite to one another to hold the fan guard in position.
- The foregoing and other objects and advantages of the invention will appear in the detailed description which follows. In the description, reference is made to the accompanying drawings which illustrate a preferred embodiment of the invention.
-
- Fig. 1 is a perspective view of a pump incorporating the invention;
- Fig. 2 is a view like Fig. 1, but with the fan guards exploded off of the pump housings;
- Fig. 3 is a sectional view with its plane radial to the shaft of the pump and through the ears on the tabs of the fan guard with the fan guard assembled to the housing;
- Fig. 4 is a detail view from the same plane as Fig. 3 of a single one of the tabs and recesses with the ear received in the hole; and
- Fig. 5 is a longitudinal cross-sectional view of one of the tabs received in a recess with the ear engaged in the hole.
- Fig. 1 illustrates a
pump 10 of the invention having amotor 12 with ahousing 14 at one end and ahousing 16 at the other. Thehousings monolithic head 18, which includeshead members tubes housings compression chamber portions respective housings housings - The
pump 10 also includesfan guards 40, one at each end, which are identical to one another. Referring to Fig. 2, themotor 12 has ashaft 42 which extends through it and into bothhousings shaft 42 mounts arotary fan blade 44 which is rotated by theshaft 42 in a direction so as to draw air into eachrespective housing motor 12. The housing of themotor 12 is provided with holes to provide for the exhaust of cooling air and additional ventilation slots adjacent to the motor may be provided in thehousings housings shaft 42. Thehousings fan blades 44 reaches the coils of themotor 12. - Each
fan guard 40 is perforated, having radial spokes with spaced circular ribs running between them to provide for the inlet of cooling air past theguard 40. Eachguard 40 has arim 50 which on its inner side defines agroove 52 in which alip 54 of theadjacent housing fan guard 40 radially relative to the housing. - A projection 56 extends radially from the
rim 50 and fits into opening 58 which is formed in thecompression chamber portion housing fan guard 40 angularly relative to thehousing fan guard 40 is made of a suitable resilient plastic resin, such as a polyester polymer. - Each
guard 40 has fourtabs 60, each in a different quadrant, which extend parallel to theshaft 42 into the end of the respectivecrank case portion corresponding housing tab 60 is D- or crescent-shaped generally and fits into a similarly shaped, but slightlylarger recess 66 which is formed in therespective housing shaft 42. Eachtab 60 has anear 68 which snaps into ahole 70 formed in therecess 66. Therecess 66 andhole 70 are both features which can readily be cast in features by persons of ordinary skill in the art. When thetab 60 is received in therecess 66 and theear 68 is engaged in thehole 70, theinner surface 72 of thetab 60 is slightly recessed from thecircular surface 74 of the housing, whichcircular surface 74 is only slightly spaced from the tips of thefan blade 44. Thesurface 72 is so recessed so that if theguard 40 is removed from the housing with the fan running, thetab 60 will not be moved so far inwardly as to interfere with the rotating fan blade. In addition, since thetab 60 is recessed from thesurface 74, thetab 60 does not increase the required amount of clearance between the tips of the fan blade and housing. - As illustrated in Fig. 3, there are two
tabs 60 and correspondingrecesses 66 in the upper portion of the crank case and two in the lower portion. The two in the upper portion are both aligned along a single horizontal line 80 and in the lower portion are aligned along horizontal line 82. Although therecesses 66 and arcuate surfaces of thetabs 60 are symmetrical about lines which are radial to theshaft 42 alonglines 84 and 86, theears 68 and holes 70 are not, being aligned along the horizontal lines 80 and 82, which are perpendicular to the major parting line of thehousing - As best shown in Fig. 5, each
tab 60 has a ramped lead-in, or distal,surface 90 which serves to flex thetab 60 inwardly when the guard is inserted in the housing. Eachear 68 also has aproximal surface 92 which is at a right angle or nearly right angle toouter side 94 of theear 68 so as to provide for a snap-in connection of theear 68 in thehole 70.
Claims (12)
- A pump housing (14, 16) having a generally cylindrical open end with an axial fan propeller (44) mounted on a shaft (42) in said open end to draw air into said open end from outside of said housing, said open end being covered by a perforated fan guard (40) which permits air drawn by said fan to pass by it, characterized in that said fan guard (40) has peripheral angularly spaced tabs (60) which extend into the open end of the housing in a direction parallel to the axis of the shaft (42), each said tab having a crescent-shaped profile and an ear (68) protruding from an outer surface of said tab (60), and wherein similarly shaped crescent-shaped recesses (66) are formed in the housing to receive the tabs with a curved inner surface of the recess against a similarly curved outer surface of the tab, and holes (70) are formed in said housing which open into said recesses (66), wherein the ear of each tab snaps into the hole in the corresponding recess to hold the fan guard in place over the end of the housing.
- A pump housing (14, 16) as in claim 1, wherein the recesses (66) and holes (70) are cast-in features of the housing (14, 16).
- A pump housing as in claim 2, wherein the holes (70) which are formed in the recesses (66) each have a hole axis which is normal to a plane which includes the shaft axis and an axis of a cylinder of the pump.
- A pump housing as in claim 3, wherein each ear (68) extends from the corresponding tab (60) in a direction which is parallel to the direction of the hole axes.
- A pump housing as in claim 1, wherein a ramped surface (90) is provided on a distal end of the ear (68) so as to flex the tab inwardly upon insertion of the tabs (60) in the end of the housing (14, 18).
- A pump housing as in claim 5, wherein the ear (68) has a proximal end (92) opposite from the distal end which is squared off so that the ear (68) snaps into the hole and the near side of the hole is caught by the proximal end of the ear (68) when the tabs (60) are inserted into the end of the housing (14, 16).
- A pump housing as in claim 1, wherein the tabs (60) are smaller than the recesses (66) in the housing (14, 16) so that the inward surfaces (72), of the tabs approximate a continuation of the inner surface (74) of the housing so as not to interfere with the fan blades or require an excessive clearance between the tips of the fan blades and the interior of the housing.
- A pump housing as in claim 7, wherein the inward surfaces (72) of the tabs (60) are recessed within the recesses in which they are received so that if the ear (68) is not fully engaged in the hole, or if the fan guard (40) is removed with the fan turning, the tabs do not flex so far inwardly as to interfere with the tips of the fan propellen (44).
- A pump housing as in claim 1, wherein four tabs (60) and corresponding recesses (66) are provided.
- A pump housing as in claim 9, wherein the four tabs (60) and recesses (66) provided with two on each side of the housing, with one tab (60) and corresponding recess (66) in each of four equiangular quadrants of the housing (14, 16).
- A pump housing as in claim 10, wherein the four tabs (60) and recesses (66) are arranged symmetrically on opposite sides of the housing, the holes (70) and ears on opposite sides of the housing at the top of the housing being aligned along one axis and at the bottom of the housing being aligned along a different axis.
- A pump housing as in claim 1, wherein the fan guard (40) is generally round but with at least one feature which extends radially from the fan guard (40) and fits into a corresponding opening of the housing to position the fan guard angularly relative to the housing.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16783999P | 1999-11-29 | 1999-11-29 | |
US167839P | 1999-11-29 | ||
PCT/US2000/032384 WO2001038743A1 (en) | 1999-11-29 | 2000-11-28 | Pump housing |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1242744A1 EP1242744A1 (en) | 2002-09-25 |
EP1242744B1 true EP1242744B1 (en) | 2006-04-05 |
Family
ID=22609054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00982243A Expired - Lifetime EP1242744B1 (en) | 1999-11-29 | 2000-11-28 | Pump housing |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1242744B1 (en) |
JP (1) | JP4052628B2 (en) |
CN (1) | CN1246595C (en) |
AU (1) | AU1930001A (en) |
CA (1) | CA2392909C (en) |
DE (1) | DE60027202T2 (en) |
MX (1) | MXPA02005296A (en) |
WO (1) | WO2001038743A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050220637A1 (en) | 2004-04-01 | 2005-10-06 | Hydro-Gear Limited Partnership | Fan shroud for pump |
US20060104833A1 (en) * | 2004-11-12 | 2006-05-18 | Thomas Industries Inc. | Fan guard having channel to direct cooling air to a piston cylinder |
GB2463823B (en) | 2005-05-17 | 2010-06-09 | Thomas Industries Inc | Pump improvements |
ITTO20050839A1 (en) * | 2005-11-28 | 2007-05-29 | Faiveley Transp Piossasco S P A | GROUP OF GENERATION AND TREATMENT OF FLUIDS COMPRESSED AERIFORMS, WITH IMPROVED COOLING SYSTEM. |
CN102588249B (en) | 2006-09-05 | 2015-01-21 | 嘉德纳丹佛托马斯公司 | Fluid intake and exhaust fittings for a compressor or pump |
CN101163385B (en) * | 2006-10-12 | 2012-04-11 | 株式会社三社电机制作所 | Clamping structure for fan housing of power supply device for plating |
DE102006058842A1 (en) | 2006-12-13 | 2008-06-19 | Pfeiffer Vacuum Gmbh | Vacuum pump with fan |
FR2931903B1 (en) * | 2008-05-30 | 2011-06-24 | Thomas Industries Inc | PUMP HOUSING |
JP6021141B2 (en) * | 2012-06-08 | 2016-11-09 | アルバック機工株式会社 | Pump device |
CN103470505A (en) * | 2013-09-30 | 2013-12-25 | 柳州易舟汽车空调有限公司 | Machine case of compressor |
WO2016106469A1 (en) * | 2014-12-29 | 2016-07-07 | 浙江鸿友压缩机制造有限公司 | Cooling layout structure for direct-connection-type oil-free compressor |
WO2020121956A1 (en) | 2018-12-11 | 2020-06-18 | 日東工器株式会社 | Member for pump installation |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2615884C2 (en) * | 1976-04-10 | 1985-12-12 | Maico Elektroapparate-Fabrik GmbH, 7730 Villingen-Schwenningen | Built-in fan |
DE3228395C2 (en) * | 1982-07-29 | 1986-07-24 | Hitachi, Ltd., Tokio/Tokyo | Method of making covers |
DE4337631A1 (en) * | 1993-11-04 | 1995-05-11 | Kloeckner Humboldt Deutz Ag | Protective device for a blower of an internal combustion engine |
US5584675A (en) * | 1995-09-15 | 1996-12-17 | Devilbiss Air Power Company | Cylinder sleeve for an air compressor |
GB2314593B (en) * | 1996-06-28 | 1999-11-10 | Thomas Industries Inc | Two-cylinder air compressor |
-
2000
- 2000-11-28 DE DE60027202T patent/DE60027202T2/en not_active Expired - Lifetime
- 2000-11-28 CN CN 00816392 patent/CN1246595C/en not_active Expired - Fee Related
- 2000-11-28 MX MXPA02005296A patent/MXPA02005296A/en active IP Right Grant
- 2000-11-28 EP EP00982243A patent/EP1242744B1/en not_active Expired - Lifetime
- 2000-11-28 JP JP2001540058A patent/JP4052628B2/en not_active Expired - Fee Related
- 2000-11-28 CA CA002392909A patent/CA2392909C/en not_active Expired - Fee Related
- 2000-11-28 AU AU19300/01A patent/AU1930001A/en not_active Abandoned
- 2000-11-28 WO PCT/US2000/032384 patent/WO2001038743A1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE60027202D1 (en) | 2006-05-18 |
WO2001038743A1 (en) | 2001-05-31 |
CN1246595C (en) | 2006-03-22 |
CN1402815A (en) | 2003-03-12 |
MXPA02005296A (en) | 2003-09-22 |
JP4052628B2 (en) | 2008-02-27 |
CA2392909C (en) | 2006-10-10 |
AU1930001A (en) | 2001-06-04 |
JP2003515061A (en) | 2003-04-22 |
EP1242744A1 (en) | 2002-09-25 |
DE60027202T2 (en) | 2006-12-14 |
CA2392909A1 (en) | 2001-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6692240B1 (en) | Cylindrical pump housing with a fan guard mounted on each end of the housing with snap tabs engaging housing recesses | |
US5755557A (en) | Axial flow fan | |
EP1242744B1 (en) | Pump housing | |
EP3795840B1 (en) | Motor fan | |
US5695318A (en) | Diagonal fan | |
US7207774B2 (en) | Centrifugal fan and casing thereof | |
EP0479576B1 (en) | Oilless air compressor driven by universal motor | |
KR101937420B1 (en) | A Fan Motor | |
EP3540238B1 (en) | Fan motor apparatus with protection cover | |
EP1657440A1 (en) | Fan guard having channel to direct cooling air to a piston cylinder | |
KR970010510B1 (en) | Turbo vacuum pump | |
CN106762697B (en) | Alternating current permanent magnet synchronous water pump capable of reducing exhaust noise | |
EP1703136B1 (en) | Lateral channel compressor | |
JP2012241560A (en) | Compressor housing for supercharger | |
EP1571343B1 (en) | Automotive motor-compressor assembly | |
US4483656A (en) | Vortex blower | |
US7255533B2 (en) | Centrifugal fan | |
US20210102551A1 (en) | Electric compressor | |
JP2024050401A (en) | Recipient and high vacuum pump | |
US4886415A (en) | Fan with an essentially square housing | |
CN214887905U (en) | Closed impeller and centrifugal compressor with same | |
CN108649733B (en) | Motor with a motor housing | |
CN201016332Y (en) | Compressor housing | |
KR100496552B1 (en) | Electric ventilator | |
CN214304426U (en) | Centrifugal fan and electric product |
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 |
|
17P | Request for examination filed |
Effective date: 20020626 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH CY DE FR GB IT LI |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20060405 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 60027202 Country of ref document: DE Date of ref document: 20060518 Kind code of ref document: P |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20061117 Year of fee payment: 7 |
|
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 |
|
26N | No opposition filed |
Effective date: 20070108 |
|
EN | Fr: translation not filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR 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: 20070309 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20131127 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20131126 Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60027202 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150602 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20141128 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20151127 Year of fee payment: 16 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20161128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20161128 |