CA1142493A - Compressor - Google Patents
CompressorInfo
- Publication number
- CA1142493A CA1142493A CA000341047A CA341047A CA1142493A CA 1142493 A CA1142493 A CA 1142493A CA 000341047 A CA000341047 A CA 000341047A CA 341047 A CA341047 A CA 341047A CA 1142493 A CA1142493 A CA 1142493A
- Authority
- CA
- Canada
- Prior art keywords
- compressor
- piston
- crankshaft
- support means
- housing section
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
- F01B1/12—Separate cylinder-crankcase elements coupled together to form a unit
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
ABSTRACT
A linear type of compressor wherein a housing section, for enclosing a crankshaft and pinions of a counterbalancing synchronizer, has axially extending support means for the pinions formed integrally therewith through an inner flange also integral with the housing section, so that the holes for the pinion shafts may be formed in the support means when the hole in the housing for the crankshaft is formed. This assures the making of all of the holes exactly parallel and avoids time-consuming assembly work, experienced in prior art compressor manufacturing, when the housing sections are put together. By providing a large open-ing through the upper portion of the support means or through the bottom of the housing an axial bore may be made to receive a piston type of crosshead. By cutting down on the number of compressor parts and the manufacturing tolerances involved in the manufacture of the parts and the use of U-shaped members as guides for gear racks and as retainers for the pinion shafts, a further saving in manufacturing cost is obtained.
A linear type of compressor wherein a housing section, for enclosing a crankshaft and pinions of a counterbalancing synchronizer, has axially extending support means for the pinions formed integrally therewith through an inner flange also integral with the housing section, so that the holes for the pinion shafts may be formed in the support means when the hole in the housing for the crankshaft is formed. This assures the making of all of the holes exactly parallel and avoids time-consuming assembly work, experienced in prior art compressor manufacturing, when the housing sections are put together. By providing a large open-ing through the upper portion of the support means or through the bottom of the housing an axial bore may be made to receive a piston type of crosshead. By cutting down on the number of compressor parts and the manufacturing tolerances involved in the manufacture of the parts and the use of U-shaped members as guides for gear racks and as retainers for the pinion shafts, a further saving in manufacturing cost is obtained.
Description
" 11~24~93 ~ COMPRESSOR
.
This invention relates to a gas compressor and, more particularly to improvements in the mounting of a synchronizing-balancing mechanism in the compressor. The invention is illustrated as having a motor operating an axially reciprocable piston in a co~pressor but could be used to operate other types of energy-absorbing devices. The invention may be used in a reverse arrangement with the power means located where the piston is located and the energy absorbing device located where the motor is shown.
Compressors similar to the one of this invention are illustrated in my U.S.A patents numbers 3,944,29~, 3,861,222 and 3,861,223, but they, like other prior art compressors, have transversely extending supports for the pinions of the synchroniæing-balancing mechanism formed integrally with the engine's housing, which requires that slots be provided in the outer racks' connecting plates for the pinion shafts to extend through, and the surface of each of the supports must ~ be carefully machined to provide a guide surface for the outer racks unit.
The present invention obviates the above-mentioned costly construction and additionally reduces the overall manufacturing cost by providing a piston-type o compressor comprising a flrst housing section with a piston therein, a second housing section with spaced walls and driving means for the piston therein, the driving means including a crankshaft extending through a hole in the second housing, a piston-type of crosshead reciprocable in an axially extending bore in the - second housing section and connected to the crankshaft by a connecting rod and operably connected to a piston rod extending from the piston to a balancing mechanism. The balancing mechanism has a portion which moves in the opposite direction .~
w s / ~
~L~42~
o that of the piston and which is constructed and arranged to equali~e the masses of the oppositely moving parts of the compressor. The second housing section includes a pair of pinions on shafts extending between a pair of generally parallel shaft support means spaced inwardly from side walls of the compressor and substantially equally spaced from the axis of the bore and arranged to enable transversely extending shaft receiving holes to be formed therein when the hole for the crankshaft is formed in a side wall of the second housing section so as to assure exact parallel arrangment of the shafts and the crankshaft when the compressor is assembled.
Means is provided for connecting the first and second housing sections together.
Figure 1 of the drawing is a schematic and vertical sectional view of one embodiment of the invention;
Eigure 2 is a similar fragmentary view taken along line 2-2 of E'i~. l;
Figure 3 is a sectional view taken along line 3-3 of Fig. 2;
Figure 4 is an enlarged, fragmentary and sectional view of a modified form of support means for pinion shafts;
Figure 5 is a fragmentary sectional view taken along line 5-5 of Fig. 4;
Figure 6 is a fragmentary, sectional view, similar to that of Fig. 2, of a modification of the crankcase housing section; and Figure 7 is a fragmentary sectional view taken along line 7-7 of Fig. 6.
Referring to Figure 1 of the drawing, the compressor has a lower crankcase housing section 11 with a base extension lla on which an electric -la-WS/~r~
~1~2~3 motor 12 is mounted. Intermediate the ends of section 11 is an inwardly extendin~ inte~ral flange 13 with an axially extendins sleeve-like support 14. Slots extendinq downwardly from the top are formed in the support 14 to provide spaced extensions 15 and 16 (see Fig. 2) to receive pinions 17 therebetween. The pinions are supported on shafts 18 extendins throu~h holes 19 and 20.
A double rack member 21 extends between the pinions 17 and has a piston rod upper extension 21a that extends throu~h a seal 22 in a par-tition wall 23, throu~h a compressor piston 24 and throush a bearin~
,~ 10 sealin~ 25 in the end wall 26 of cylindeF 27. If desired, the piston rod may extend further into additional compressor cylinders, not shown.
The double rack also has a lower extension 21b, in the form of a piston, that serves as a crosshead. It is guided by a sleeve-like bearing member 28 with an external annular flange 28a tha~ is bolted to the under side of support member 13. A guide bore 28b in the bearing member is adapted to be formed either through an openins llb throush the base of section 11, if the guide member 28 is attached to section 11 before the suide bore is . ~ ~
formed, or is integral with the section as shown in Fig. 6, or may be formed throu~h the upper end of the section 11 and throu9h the enlar~ed 20 opening l5a and 16a in the pinion support portions 14, 15 and 16 (see also Fig. ~). When opening llb is provided, however, the enlar~ements 15a and 16a could be eliminated and vice-versa.
A crankshaft extends throush a bearing 30 secured in an openins 31 formed in a side wall of section 11, while the section is in a machine which drills holes 19 and 20, throu~h a window llc. This assures that the hole 31 will be exactly parallel to the holes l9 and 20 for quick and accu-rate assembly, The crankshaft carries a pair of counterbalanced crank arms 32 connected to a connectins rod 33 by a pivot pin 34. The connectin~
rod is pivotally connected to crosshead 21b by pin 35. The outer end of 30 crankshaft 29 carries a pulley 36 which is connected to a smaller pulley 37 on motor 12 by a V-belt 38.
Positioned in en~a9ement with the outer teeth of pinions 17 are a pair of parallel racks 39 risidly connected to9ether by plates 40. It is deemed ~2~93 apparent that as the motor drives the crankshaft, the double rack will move up and down to operate the piston 24. In so movin~, the pinions will drive the racks 39 and connectins plates 40 in the opposite direction.
The total mass of members 39 and 40 is made equal to the total mass of the opposltely movin~ members, includin~ approximately the upper third of connectin~ rod 33, so as to practically elimlnate vibration.
The modification of Fi~s. 4 and 5 is the same as that of Fi~s. 1-3 except that the upper ends of support portions 115 (not shown3 and 116 have cast recesses at 116a and 116b and are square or round at the top 10 side portions thereof to receive self-lubricating U-shaped clips 141 havin~ smooth surfaces, at least on the outer sides thereof, to provide bearin~ surfaces for the pinions 17 and plates 40. The clips may be held in place by bolts 142. The clips also serve as retainers for the shafts 18.
The modification of Fig. 6 is the same as that of Fiss. 1-3 except that the crosshead suide portion 228 is cast intesrally with the pinion support 214 and section 211. Also no openin~ is provided in the base of the sec-tion as the bore 228b is drilled from the top and through the enlar~ed opening 215a-216a.
In the assemblin~ of the compressor, the an~ular relationship of the 20 member 28 is not critical as the guide 28 fits snusly in a bore through flange 13, that also has a machined pad to be en~ased by the flan~e 28a.
As the bores 19, 20, 31, 13a, 15a and 16a are all formed at the same time, when in a drillins machine, there is no time-consumin~ alisnment diffi-culties.
The operation of the compressor is the same as disclosed in my above-mentioned patents. Suffice it to say that as the motor rotates, the crank drives the crosshead, inner rack and piston back and forth to operate the compressor in a conventional manner. The pinions will obviously cause the outer rack member to move in the opposite direction to the piston, to 30 counterbalance the movement the oppositely movins masses, as set forth in detail in said patents.
.
This invention relates to a gas compressor and, more particularly to improvements in the mounting of a synchronizing-balancing mechanism in the compressor. The invention is illustrated as having a motor operating an axially reciprocable piston in a co~pressor but could be used to operate other types of energy-absorbing devices. The invention may be used in a reverse arrangement with the power means located where the piston is located and the energy absorbing device located where the motor is shown.
Compressors similar to the one of this invention are illustrated in my U.S.A patents numbers 3,944,29~, 3,861,222 and 3,861,223, but they, like other prior art compressors, have transversely extending supports for the pinions of the synchroniæing-balancing mechanism formed integrally with the engine's housing, which requires that slots be provided in the outer racks' connecting plates for the pinion shafts to extend through, and the surface of each of the supports must ~ be carefully machined to provide a guide surface for the outer racks unit.
The present invention obviates the above-mentioned costly construction and additionally reduces the overall manufacturing cost by providing a piston-type o compressor comprising a flrst housing section with a piston therein, a second housing section with spaced walls and driving means for the piston therein, the driving means including a crankshaft extending through a hole in the second housing, a piston-type of crosshead reciprocable in an axially extending bore in the - second housing section and connected to the crankshaft by a connecting rod and operably connected to a piston rod extending from the piston to a balancing mechanism. The balancing mechanism has a portion which moves in the opposite direction .~
w s / ~
~L~42~
o that of the piston and which is constructed and arranged to equali~e the masses of the oppositely moving parts of the compressor. The second housing section includes a pair of pinions on shafts extending between a pair of generally parallel shaft support means spaced inwardly from side walls of the compressor and substantially equally spaced from the axis of the bore and arranged to enable transversely extending shaft receiving holes to be formed therein when the hole for the crankshaft is formed in a side wall of the second housing section so as to assure exact parallel arrangment of the shafts and the crankshaft when the compressor is assembled.
Means is provided for connecting the first and second housing sections together.
Figure 1 of the drawing is a schematic and vertical sectional view of one embodiment of the invention;
Eigure 2 is a similar fragmentary view taken along line 2-2 of E'i~. l;
Figure 3 is a sectional view taken along line 3-3 of Fig. 2;
Figure 4 is an enlarged, fragmentary and sectional view of a modified form of support means for pinion shafts;
Figure 5 is a fragmentary sectional view taken along line 5-5 of Fig. 4;
Figure 6 is a fragmentary, sectional view, similar to that of Fig. 2, of a modification of the crankcase housing section; and Figure 7 is a fragmentary sectional view taken along line 7-7 of Fig. 6.
Referring to Figure 1 of the drawing, the compressor has a lower crankcase housing section 11 with a base extension lla on which an electric -la-WS/~r~
~1~2~3 motor 12 is mounted. Intermediate the ends of section 11 is an inwardly extendin~ inte~ral flange 13 with an axially extendins sleeve-like support 14. Slots extendinq downwardly from the top are formed in the support 14 to provide spaced extensions 15 and 16 (see Fig. 2) to receive pinions 17 therebetween. The pinions are supported on shafts 18 extendins throu~h holes 19 and 20.
A double rack member 21 extends between the pinions 17 and has a piston rod upper extension 21a that extends throu~h a seal 22 in a par-tition wall 23, throu~h a compressor piston 24 and throush a bearin~
,~ 10 sealin~ 25 in the end wall 26 of cylindeF 27. If desired, the piston rod may extend further into additional compressor cylinders, not shown.
The double rack also has a lower extension 21b, in the form of a piston, that serves as a crosshead. It is guided by a sleeve-like bearing member 28 with an external annular flange 28a tha~ is bolted to the under side of support member 13. A guide bore 28b in the bearing member is adapted to be formed either through an openins llb throush the base of section 11, if the guide member 28 is attached to section 11 before the suide bore is . ~ ~
formed, or is integral with the section as shown in Fig. 6, or may be formed throu~h the upper end of the section 11 and throu9h the enlar~ed 20 opening l5a and 16a in the pinion support portions 14, 15 and 16 (see also Fig. ~). When opening llb is provided, however, the enlar~ements 15a and 16a could be eliminated and vice-versa.
A crankshaft extends throush a bearing 30 secured in an openins 31 formed in a side wall of section 11, while the section is in a machine which drills holes 19 and 20, throu~h a window llc. This assures that the hole 31 will be exactly parallel to the holes l9 and 20 for quick and accu-rate assembly, The crankshaft carries a pair of counterbalanced crank arms 32 connected to a connectins rod 33 by a pivot pin 34. The connectin~
rod is pivotally connected to crosshead 21b by pin 35. The outer end of 30 crankshaft 29 carries a pulley 36 which is connected to a smaller pulley 37 on motor 12 by a V-belt 38.
Positioned in en~a9ement with the outer teeth of pinions 17 are a pair of parallel racks 39 risidly connected to9ether by plates 40. It is deemed ~2~93 apparent that as the motor drives the crankshaft, the double rack will move up and down to operate the piston 24. In so movin~, the pinions will drive the racks 39 and connectins plates 40 in the opposite direction.
The total mass of members 39 and 40 is made equal to the total mass of the opposltely movin~ members, includin~ approximately the upper third of connectin~ rod 33, so as to practically elimlnate vibration.
The modification of Fi~s. 4 and 5 is the same as that of Fi~s. 1-3 except that the upper ends of support portions 115 (not shown3 and 116 have cast recesses at 116a and 116b and are square or round at the top 10 side portions thereof to receive self-lubricating U-shaped clips 141 havin~ smooth surfaces, at least on the outer sides thereof, to provide bearin~ surfaces for the pinions 17 and plates 40. The clips may be held in place by bolts 142. The clips also serve as retainers for the shafts 18.
The modification of Fig. 6 is the same as that of Fiss. 1-3 except that the crosshead suide portion 228 is cast intesrally with the pinion support 214 and section 211. Also no openin~ is provided in the base of the sec-tion as the bore 228b is drilled from the top and through the enlar~ed opening 215a-216a.
In the assemblin~ of the compressor, the an~ular relationship of the 20 member 28 is not critical as the guide 28 fits snusly in a bore through flange 13, that also has a machined pad to be en~ased by the flan~e 28a.
As the bores 19, 20, 31, 13a, 15a and 16a are all formed at the same time, when in a drillins machine, there is no time-consumin~ alisnment diffi-culties.
The operation of the compressor is the same as disclosed in my above-mentioned patents. Suffice it to say that as the motor rotates, the crank drives the crosshead, inner rack and piston back and forth to operate the compressor in a conventional manner. The pinions will obviously cause the outer rack member to move in the opposite direction to the piston, to 30 counterbalance the movement the oppositely movins masses, as set forth in detail in said patents.
Claims (9)
1. A piston type of compressor comprising a first housing section With a piston therein, a second housing section with spaced walls and driving means for the piston therein, said driving means including a crankshaft extending through a hole in said second housing, a piston-type of crosshead reciproable in an axially extending bore in said second housing section and connected to said crankshaft by a connecting rod and operably connected to a piston rod extending from said piston by a bal-ancing mechanism, said balancing mechanism having a portion thereof which moves in the opposite direction to that of said piston and which is constructed and arranged to equalize the masses of the oppositely moving parts of the compressor, said second housing section including a pair of pinions on shafts extending between a pair of generally parallel shaft support means spaced inwardly from side walls of the compressor and substantially equally spaced from the axis of said bore and arranged to enable transversely extending shaft receiving holes to be formed therein when said hole for said crankshaft is formed in a side wall of said second housing section to assure exact parallel arrangement of said shafts and said crankshaft when said compressor is assembled and means connecting said first and second housing sections together.
2. A compressor as defined in claim 1 wherein said pinion sup-port means are on opposite sides of the axis of said piston rod, said piston rod has a double rack portion positioned between and operably engaging said pinions, and said mechanism also includes a pair of racks extending generally parallel to the double racks with one each thereon on the opposite side of one each of said pinions and operably engaging the pinion, said pair of racks being rigidly connected by means extending therebetween and gen-erally parallel to the sides of said pinions.
3. A compressor as defined in claim 2 wherein each of said pinion support means has a channel-shaped member straddling each of said support means and serving as a shaft retainer and bearing surface for the racks connector means to slide upon.
4. A compressor as defined in claim 3 wherein said channel-shaped members have a flat portion of one leg thereof that ex-tends between the adjacent pinion support means and the adjacent side of a pinion and the adjacent side of the double rack for each to slide thereon.
5. A compressor as defined in claim 1 wherein said bore for said crosshead is in a sleeve having a flange that is detachably se-cured to a flange portion of the pinion shaft support means.
6. A compressor as defined in claim 1 wherein said second housing section has a hole in the end thereof through which the axially extending bore for the crosshead may be made.
7. A compressor as defined in claim 1 wherein the shaft support means has an axially extending opening through a portion thereof coaxial with the bore for said crosshead and larger in diameter than the diameter of the bore.
8. A compressor as defined in claim 1 wherein said shaft support means has a transversely extending portion that is integral with at least the portion of the second housing section in which the crankshaft is mounted.
9. A compressor as defined in claim 8 wherein said generally parallel pinion supporting means are on the opposite side of said transversely extending portion from said crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000341047A CA1142493A (en) | 1979-12-03 | 1979-12-03 | Compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000341047A CA1142493A (en) | 1979-12-03 | 1979-12-03 | Compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1142493A true CA1142493A (en) | 1983-03-08 |
Family
ID=4115732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000341047A Expired CA1142493A (en) | 1979-12-03 | 1979-12-03 | Compressor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1142493A (en) |
-
1979
- 1979-12-03 CA CA000341047A patent/CA1142493A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |