US3282260A

US3282260A - Compressor

Info

Publication number: US3282260A
Application number: US307237A
Authority: US
Inventors: Conrad Ulrich; Dinger Hans; Deutschmann Herbert
Original assignee: Daimler Benz AG
Current assignee: Daimler Benz AG
Priority date: 1962-09-15
Filing date: 1963-09-06
Publication date: 1966-11-01
Anticipated expiration: 1983-11-01
Also published as: DE1222315B; GB983474A

Description

Nov. 1, 1966 CQNRAD ET AL COMPRESSOR Filed Sept. 6, 1963 FIG. I

FIG. 2

INVENTORS.

N A M W D S b A R W W W m sm 9 AE UHH Y B /6 3 Q ATTORNEY-5:

United States Patent 3,282,260 COMPRESSOR Ulrich Conrad, Ludwigsburg-Ossweil, Hans Dinger, Stuttgart, and Herbert Deutschmann, Stuttgart-Bad Cannstatt, Germany, assignors to Daimler-Benz Aktiengesellschaft, Stuttgart, Unterturkheim, Germany Filed Sept. 6, 1963, Ser. No. 307,237 Claims priority, application Germany, Sept. 15, 1962,

14 Claims. (c1. 123-55 The present invention relates to a charging blower or supercharger for internal combustion engines, especially those driven from an exhaust gas turbine, having an axial air inlet into the rotor and a radial air discharge out of the rotor and provided with a ring-shaped diifusor arranged about the rotor either with or without radially extending guide members.

With the known prior art charging blowers or superchargers of the aforementioned type, the delivery of the compressed air out of the blower takes place through spiral guide means. This results oftentimes in the disadvantageous necessity for a multiple deflection of the air and/or for the insertion of further diifusors. Additionally, this type of construction is not suitable for internal combustion engines having a compact construction and a smooth external contour by reason of the outwardly separate inlet and outlet lines.

The present invention aims at an improvement with respect to these disadvantages. The present invention solves the problems existing with the aforementioned types of prior art blowers or superchargers in that the diflusor passes over with an annular gap into an axially adjoining, approximately cylindrical air pressure tank or header and in that the air inlet line extending axially from the charger inlet extends through this air pressure tank or header.

By the use of such an arrangement, a closed outer contour is achieved at the blower so that it may be readily adapted to the engine block. Furthermore, the space requirement becomes smaller because the air inlet and outlet lines are arranged one stacked within the other so to speak of. Additionally, by the use of the present invention, a better air guidance may be achieved without the use of further diffusors.

With internal combustion engines of in-line construction, the present invention proposes that the air pressure tank or header is disposed parallelly to the axis of the engine inlet manifold or inlet stack and directly passes over into the same without any air deflections. Hence, the blower axis is then disposed parallel to the axis of the inlet manifold or inlet stack or even is in alignment therewith. Such an arrangement produces an almost ideal air guidance and additionally a very good constructional installation particularly as according to a further feature and development of the present inventive concept, the air pressure tank or header is formed itself by an extension and possibly by an enlargement of the inlet stack or manifold whereby the blower with its housing may then be secured at a flange disposed along the end face thereof.

The present invention is also particularly suitable for use with internal combustion engines of V-type construction. If used with such types of engines, it is proposed that the air pressure tank or header be closed at the end face thereof opposite the blower and be provided with a lateral aperture for the connection with the engine intake stack or manifold. The blower axis is then approximately at right angle to the axis of the inlet manifold or stack. This produces a good connection of the exhaust gas turbine with the exhaust manifold or stack of the internal combustion engine.

"ice

With such an arrangement, an intermediate member secured at the engine block is inserted, according to the present invention, between the header and the engine intake manifold or stack, which intermediate member serves as bearer for the pressure air tank or header including the blower flangedly connected thereto. This bearer may be secured between the rows of cylinders at the engine block or engine frame and may serve simultaneously for two blowers disposed in a mirror-image-like manner relative to one another whereby one blower is provided for each cylinder row. In that connection, it should be noted that, of course, the mirror-image-like arrangement of two blowers, for example, at both ends of the inlet stacks or manifolds is also possible with other types of internal combustion engine constructions, as in general several blowers constructed in accordance with the present invention may also be provided with all types of internal combustion engines.

With the two aforementioned embodiments, the air inlet line is appropriately formed by a bent pipe section or elbow portion which connects the air inlet aperture at the blower with a lateral aperture of the air pressure tank or header. The lateral aperture is disposed with internal combustion engines of V-type construction approximately opposite the aperture intended for the connection with the engine inlet stack or manifold.

It is possible, of course, that the air pressure tank or header is formed directly by the blower housing itself. However, for reasons of manufacture and assembly, a division is normally preferred whereby the blower is then flangedly connected with the air pressure tank and the air pressure tank is again flangedly connected with the engine inlet stack or manifold. In all cases, however, the air pressure tank may serve, for example, with the aid of the aforementioned intermediate piece as bearer element for the blower and exhaust gas turbine. Furthermore, it is also understood that the present invention is not limited to a drive by means of an exhaust gas turbine but that any other suitable known blower drive may be used, for example, by a counter shaft transmission.

Accordingly, it is an object of the present invention to provide a charging blower for internal combustion engines which eliminates by simple means the drawbacks and disadvantages mentioned hereinabove and normally encountered with the prior art constructions.

Another object of the present invention resides in the provision of a charging blower assembly for internal combustion engines which assures as simple as possible a delivery of the air without unnecessary deflections and deviations, permits a compact construction and minimizes the need for several dilfusors.

A still further object of the present invention resides in the provision of a charging blower assembly for internal combustion engines which may be readily installed at the engine block in such a manner as not to disturb the relatively smooth and compact external contour of the internal combustion engine blocks.

Another object of the present inventiton resides in the provision of a charging blower assembly, particularly such assembly as includes an exhaust gas turbine drive, which requires less space, can be readily secured and assembled at the engine block and minimizes the number of parts necessary therefor.

Still another object of the present invention resides in the provision of a charging blower assembly for internal combustion engines which is not only simple in structure but also permits an extremely uncomplicated connection with the inlet stack of the engine as well as with the outlet stack in case of use ofexhaust gas turbines as drive means for the blowers.

These and other objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawing which shows, for purposes of illustration only, two embodiments in accordance with the present invention and wherein:

FIGURE 1 is a partial cross-sectional view through a blower for an inline internal combustion engine, showing the engine in side view, and

FIGURE 2 is a partial cross-sectional view through a blower assembly in accordance with the present invention for a V-type engine with the engine seen in plan view.

Referring now to the drawing wherein like reference numerals are used throughout the two views to designate like parts and more particularly to FIGURE 1, reference numeral designates therein the engine block which is not shown in detail and may be of any conventional construction. An inlet manifold or inlet stack II is arranged at the engine block 10. Individual supply lines or delivery lines 12 lead from the stack 11 to the cylinders 13. The inlet manifold or stack 11 is somewhat enlarged at one end thereof and forms an approximately cylindrical air pressure tank or header 14. The axis 15 of this air pressure tank M, which is at the same time the blower axis, is disposed parallel to the longitudinal axis of the inlet stack Ill. The blower generally designated by reference numeral 17 is arranged at the end face of the air pressure tank 14 by means of a flanged connection 16. The blower 17 is constructed as radial blower with a central air inlet 18 into the rotor 19 and an annularly shaped diffuser 20 disposed about the rotor 19 which diffuser 20 may be constructed either with or without approximately radially extending guide elements.

A bent pipe or elbow section 22 leads from a lateral aperture 23 of the air pressure tank 14 to the central air inlet nipple 18 of the blower 17. The elbow section 22 is inserted into the lateral aperture 23 in sealing relationship by means of a flange 24. In the illustrated blower, the compressed air leaves the diffuser 20 through an annular gap 25 through which it enters into the air pressure tank or header 14 and is conducted on from the air pressure tank 14 without any further deflection into the inlet stack 11. Consequently, pressure losses caused by any possible deflections or deviations are avoided by the present invention. In the instant case, an exhaust gas turbine generally designated by reference numeral 26 serves for purposes of driving the blower 17 which exhaust gas turbine is operatively connected in any known manner with the exhaust manifold or exhaust stack of the engine.

It is, of course, understood that with the arrangement described so far, the housing of the blower 17 may also itself form the air pressure tank 14. In that case, the flanged connection 16 is displaced into the plane 27. However, it is also within the scope of the present invention to make the elbow section 22 in one piece with the air pressure tank I4. Since, however, the inner sides of the channels serving for the air guidance should be as clean and smooth as possible, it is preferred for purposes of improved and facilitated blasting and cleaning to utilize the illustrated construction.

According to FIGURE 2, one blower each generally designated by reference numeral 30 having an exhaust gas turbine generally designated by reference numeral 31 is coordinated to a respective cylinder row 28 of the internal combustion engine 29 of V-type construction. Also in this embodiment an air pressure tank or header 21 adjoins the diffusor of the blower 30, in principle, in the same manner as already described. The air pressure tank 21, however, is in this case closed at the end side 32 thereof opposite the blower 30 and is provided with a lateral aperture 33 for the connection with the engine inlet manifold or stack 34. This connection, however, does not take place directly but instead by the interposition of an intermediate piece 35 which is common to the blowers 30 on both sides. The intermediate piece 35 is secured centrally at the engine block and serves simultaneously as bearer for the air pressure tanks or headers 21 inclusive of the charging blower assemblies thereof. The construction of the bent or elbow section 22 for the air inlet is the same as described in connection with FIG- URE 1. The arrangement is thereby so made that the air inlet aperture 23 is disposed approximately opposite the aperture 33 for the connection With the inlet stack 34. As may be readily recognized from the drawing, the exhaust gas turbine 31 may then be connected in a very favorable manner by a single bent or elbow section 36 with the exhaust manifold or stack 28 of the internal combustion engine.

While we have shown and described two embodiments in accordance with the present invention, it is understood that the same is not limited thereto but is susceptible of numerous changes and modifications within the spirit and scope thereof as known to a person skilled in the art; and we, therefore, do not wish to be limited to the details shown and described herein but intend to cover all such changes and modifications as are encompassed by the scope of the appended claims.

We claim:

I. A blower assembly for internal combustion engines, comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularly shaped diffusor means arranged about said rotor means,

air pressure tank means provided with a lateral aperture for the air inlet means,

means forming an annular gap disposed radially adjacent said annularly shaped diffuser means, said annular gap means constituting a connecting passage joining'said diifusor means and said air pressure tank means,

and air inlet line means extending from said air inlet means through said air pressure tank means,

said air inlet line means including a bent conduit section which connects the air inlet line means at the blower means with the lateral aperture provided in the air pressure tank means for the air inlet.

2. A blower assembly for internal combustion engines according to claim I, wherein,

said air pressure tank means is of approximately axially symmetrical construction,

said engine being provided with engine intake means,

and the axis of said air pressure tank means being disposed substantially parallel to the axis of the engine intake means and passing over substantially directly without deflections into said engine intake means.

3. A blower assembly for internal combustion engines according to claim I, wherein,

said engine being provided with engine intake means,

and the axis of said air pressure tank means being disposed substantially parallel to the axis of the engine intake means and passing over substantially directly without deflections into said engine intake means,

said air pressure tank means being formed by an extension and enlargement of said engine intake means, and said blower means having a blower housing secured at a flange means provided at the end face of said extension forming said air pressure tank means.

4. A blower assembly for internal combustion engines of V-type construction having engine intake means, comprising:

air pressure tank means,

means forming an annular gap disposed radially adjacent said annularly shaped ditfusor means, said annular 'gap means constituting a connecting passage -vjoining said ditfusor means and said air pressure tank means,

said engine being provided with engine intake means,

said air pressure tank means being closed on the side thereof opposite said blower means and being provided with lateral aperture means for the connection with the air inlet line means,

,said air inlet line means including a bent conduit section connecting said air inlet means at the blower means with said lateral aperture means.

5. A blower assembly for internal combustion engines according to claim 1, wherein,

said engine being provided with engine intake means,

said air pressure tank means being formed by an extension and enlargement of said engine intake means, and said blower means having a blower housing secured at a flange means provided at the end face of said extension forming said'air pressure tank means,

said air pressure tank means being formed by the blower housing itself.

6. A blower assembly for internal combustion engines of V-type construction having engine intake means, comprising:

blower means including a blower housing, rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularly shaped dilrusor means arranged about said rotor means, 2

air pressure tank means,

means forming an annular gap disposed radially adjacent said annularly shaped ditfusor means, said annular gap means constituting a connecting passage joining said ditfusor means and said air pressure tank means,

said engine being provided with engine intake means,

said air pressure tank means being formed by the blower housing itself,

said air inlet line means including a bent conduit section connecting said air inlet line means at the blower means with said lateral aperture means.

7. A blower assembly for internal combustion engines having engine intake means, comprising:

means forming an annular gap disposed radially adjacent said annularly shaped diffusor means, said annular gap means constituting a connecting passage joining said diffusor means and said air pressure tank means,

and air inlet line means extending from said air inlet means through said air pressure tank header means,

said'air pressure tank means being provided with a further lateral aperture for the connection with said engine intake means,

said air pressure tank means being formed by the blower housing itself,

and the further aperture provided in said air pressure tank means for the connection with the engine intake means and the air inlet aperture receiving the air inlet means being disposed approximately opposite one another.

8. A blower assembly for internal combustion engines of V-type construction having engine intake means, comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularly shaped diifusor means arranged about said rotor means,

air pressure tank means,

said air pressure tank means being provided with a lateral aperture for the air inlet means,

means forming an annular gap disposed radially adjacent said annularly shaped ditfusor means, said annular gap means constituting a connecting passage joining said diffusor means and said air pressure tank means, I

said engine being provided with engine intake means,

said air pressure tank means being closed on the side thereof opposite said blower means and being provided with lateral aperture means for the connection with the engine intake means,

said air inlet line means including a bent conduit section which connects the air inlet means at the blower means with the lateral aperture provided in the air pressure tank means for the air inlet.

9. A blower assembly for internal combustion engines of V-type construction having engine intake means, comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularly shaped ditfusor means arranged about said rotor means,

air pressure tank means,

means forming an annular gap disclosed radially adjacent said annularly shaped diflusor means, said annular gap means constituting a connecting passage joining said diffusor means and said air pressure tank means,

said engine being provided with engine intake means,

said air inlet line means including a bent conduit section which connects the air inlet means at the blower means with the lateral aperture provided in the air pressure tank means for the air inlet,

and the further aperture provided in said air pressure tank means intended for the connection with the engine inlet means and the air inlet aperture receiving the bent conduit section being disposed approximately opposite one another.

10. A blower assembly for internal combustion engines of V-type construction having engine intake means comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularlyshaped diffusor means arranged about said rotor means,

air pressure tank means,

means forming an annular gap disposed radially adjacent said annularly shaped difiusor means, said annular gap means constituting a connecting passage joining said difiusor means and said air pressure tank means,

said engine being provided with engine intake means,

said air pressure tank means being closed on the side thereof opposite said blower means and being provided with lateral aperture means adapted for connection with the engine intake means,

said air inlet means including a bent conduit section which connects the air inlet means at the blower means with the lateral aperture provided in the air pressure tank means for the air inlet,

and said lateral aperture means and said air inlet aperture including said bent conduit section being disposed approximately opposite one another,

and an intermediate structural part inserted between said air pressure tank means and the engine intake means which is secured at the engine block and serves as bearer means for the air pressure tank means.

11. A blower assembly for internal combustion engines of V-type construction having engine intake means, comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantialy radial air outlet means out of said rotor means, and substantially annularlyshaped diifusor means arranged about said rotor means,

air pressure tank means,

means forming an annular gap disposed radially adjacent said annularly shaped difiusor means, said annular gap means constituting a connecting passage joining said diifusor means and said air pressure tank means,

said engine being provided with engine intake means,

and an intermediate structural part inserted between said air pressure tank means and the engine intake means which is secured at the engine block and serves as bearer means for the air pressure tank means inclusive the flangedly connected blower means,

two blower means of substantially mirror-image-like arrangement being provided, one for each cylinder row, and both of said blower means being supported on said common bearer means between the cylinder rows of the engine.

12. A blower assembly for internal combustion engines, especially provided with drive means in the form of an exhaust gas turbine, comprising:

blower means including rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularlyshaped ditlusor means arranged about said rotor means and provided with radially extending guide means,

air pressure tank means of approximately cylindrical construction,

means forming an annular gap disclosed radially adjacent said annularly shaped dilfusor means, said annular gap means constituting a connecting passage joining said diflusor means and said air pres sure tank means,

and air inlet line means in the form of an elbow section extending from said axial air inlet means through said air pressure tank means, said air pressure tank means being provided with a lateral aperture for said air inlet line means.

13. A blower assembly for internal combustion engines having engine intake means especially provided with drive means in the form of an exhaust gas turbine, comprising:

blower means including a blower housing, rotor means and provided with a substantially axial air inlet means into said rotor means and with substantially radial air outlet means out of said rotor means, and substantially annularly-shaped diffusor means arranged about said rotor means and provided with radially extending guide means,

air pressure tank means provided with a lateral aperture for the air inlet means of approximately cylin drical construction,

means forming an annular gap disposed radially adjacent said annularly shaped ditfusor means, said annular gap means constituting a connecting passage joining said diffusor means and said air pressure tank means,

and air inlet line means in the form of an elbow section extending axially from said air inlet means through said air pressure tank header means,

said air pressure tank means being provided with a further lateral aperture for the connection with said engine intake means,

said air pressure tank means being formed by the blower housing itself,

and the further aperture provided in said air pressure tank means for the connection with the engine intake means and the air inlet aperture receiving the elbow section of said air inlet means being disposed approximately opposite one another.

14. A blower assembly for internal combustion engines, according to claim 1, wherein,

said engine being provided with engine intake means,

9 10 said air pressure tank means being formed by an ex- References Cited by the Examiner tension and enlargement of said engine intake means, UNITED STATES PATENTS and said blower means having a blower housing secured at a flange means provided at the end face 2,695,131 11/1954 Prlce 230*127 of said extension forming said air pressure tank 5 11011890 8/1963 Carlson XR 3 1 5 H1; 1 d b t d t FOREIGN PATENTS an sai air me me means mcu mg a en con n1 section Which connects the air inlet means at the 26849 10/1954 Fmland blower means with a lateral aperture provided in the air pressure tank header means for the air inlet 10 MARK NEWMAN Prlmary Examine" line means. W. E. BURNS, Assistant Examiner.

Claims

11. A BLOWER ASSEMBLY FOR INTERNAL COMBUSTION ENGINES OF V-TYPE CONSTRUCTION HAVING ENGINE INTAKE MEANS, COMPRISING: BLOWER MEANS INCLUDING ROTOR MEANS AND PROVIDED WITH A SUBSTANTIALLY AXIAL AIR INLET MEANS INTO SAID ROTOR MEANS AND WITH SUBSTANTIALLY RADIAL AIR OUTLET MEANS OUT OF SAID ROTOR MEANS, AND SUBSTANTIALLY ANNULARLYSHAPED DIFFUSOR MEANS ARRANGED ABOUT SAID ROTOR MEANS, AIR PRESSURE TANK MEANS, SAID AIR PRESSURE TANK MEANS BEING PROVIDED WITH A LATERAL APERTURE FOR THE AIR INLET MEANS, MEANS FORMING AN ANNULAR GAP DISPOSED RADIALLY ADJACENT SAID ANNULARLY SHAPED DIFFUSOR MEANS, SAID ANNULAR GAP MEANS CONSTITUTING A CONNECTING PASSAGE JOINING SAID DIFFUSOR MEANS AND SAID AIR PRESSURE TANK MEANS, AND AIR INLET LINE MEANS EXTENDING FROM SAID AIR INLET MEANS THROUGH SAID AIR PRESSURE TANK MEANS, SAID ENGINE BEING PROVIDED WITH ENGINE INTAKE MEANS, SAID AIR PRESSURE TANK MEANS BEING CLOSED ON THE SIDE THEREOF OPPOSITE SAID BLOWER MEANS AND BEING PROVIDED WITH LATERAL APERTURE MEANS FOR THE CONNECTION WITH THE ENGINE INTAKE MEANS, SAID AIR INLET LINE MEANS INCLUDING A BENT CONDUIT SECTION WHICH CONNECTS THE AIR INLET MEANS AT THE BLOWER MEANS WITH THE LATERAL APERTURE PROVIDED IN THE AIR PRESSURE TANK MEANS FOR THE AIR INLET, AND SAID LATERAL APERTURE MEANS AND SAID AIR INLET APERTURE INCLUDING SAID BENT CONDUIT SECTION BEING DISPOSED APPROXIMATELY OPPOSITE ONE ANOTHER, AND AN INTERMEDIATE STRUCTURAL PART INSERTED BETWEEN SAID AIR PRESSURE TANK MEANS AND THE ENGINE INTAKE MEANS WHICH IS SECURED AT THE ENGINE BLOCK AND SERVES AS BEARER MEANS FOR THE AIR PRESSURE TANK MEANS INCLUSIVE THE FLANGEDLY CONNECTED BLOWER MEANS, TWO BLOWER MEANS OF SUBSTANTIALLY MIRROR-IMAGE-LIKE ARRANGEMENT BEING PROVIDED, ONE FOR EACH CYLINDER ROW, AND BOTH OF SAID BLOWER MEANS BEING SUPPORTED ON SAID COMMON BEARER MEANS BETWEEN THE CYLINDER ROWS OF THE ENGINE.