KR20140033307A - Dual outlet pump - Google Patents

Abstract

The dual outlet pressure pump includes a housing having first and second inlets and first and second outlets. The plurality of vanes is driven by a rotor. An asymmetric rotor cavity includes a first surface connected by vanes formed of a plurality of low pressure, high volume chambers defined at least in part. The cavity also includes a second surface connected by vanes formed of a plurality of high pressure, low volume chambers defined at least in part. Rotation of the rotor and vane draws the high volume low pressure fluid between the first inlet and the first outlet and the low volume high pressure fluid between the second inlet and the second outlet to the pump substantially simultaneously.

Description

Dual discharge pump {DUAL OUTLET PUMP}

The present disclosure relates generally to fluid pumps. In particular, a pump having a first outlet providing a high flow rate at low pressure and a second outlet providing a low flow rate at high pressure are described.

Cross-reference to related application

This application claims the priority of US Provisional Application No. 61 / 389,776, filed October 5, 2010. The entire disclosure of this application is incorporated herein by reference.

This section provides background information related to the present disclosure, not necessarily the prior art.

In the use of modern typical automobiles, a manufacturer can use two separate fluid pumps associated with automatic transmission. The first fluid pump provides a high flow rate at a relatively low pressure for cooling and lubricating the components of the piglet transmission. The second transmission fluid pump is configured to provide a high discharge pressure at a relatively low flow rate to control the transmission function.

In particular, high pressurized fluids are optionally installed in connection with one or more chambers such that the force can be applied to various clutches, brakes or other devices to remove the shifting function. While the separate pump has previously worked satisfactorily, it is desirable to provide a pump that includes a dual outlet that provides the functionality of two pumps in a single unit with smaller size, cost and weight compared to the previous system. can do.

This section provides a general summary of the disclosure and does not disclose the full scope or all of the functions broadly.

The dual outlet pressure pump includes a housing having first and second inlets and first second outlets. The plurality of vanes is driven by a rotor. An asymmetric rotor cavity includes a first surface connected by vanes formed to at least partially define a plurality of high pressure, high volume chambers. The cavity also includes a second surface connected by vanes formed to at least partially define the plurality of high pressure, low volume chambers. Rotation of the rotor and vanes substantially simultaneously supplies a high volume low pressure fluid between the first inlet and the first outlet and a low volume high pressure fluid between the second inlet and the second outlet.

The fluid pump includes a housing having an inlet, a first outlet and a second outlet. The plurality of vanes are driven by a rotor rotatably supported by the housing. The vanes define pressure chambers with different volumes. The first and second outlets receive fluid from the inlet and are associated with a chamber having a decreasing volume. The second outlet supplies fluid at a higher pressure and lower flow rate than the first inlet.

Further areas of applicability of the present invention will become apparent from the detailed description, claims and drawings. The detailed description and examples are for illustrative purposes and do not limit the scope of the disclosure.

The drawings described herein are in all possible implementations only for the purpose of describing the selected embodiments and do not limit the scope of the present disclosure.
1 is a perspective view of a dual discharge pump formed in accordance with the teachings of the present invention;
2 is a perspective view of some disassembled assembly of the pump shown in FIG. 1;
3 is a fragmentary view of a portion of a dual discharge pump;
4 is a perspective view of the front plate of a dual discharge pump;
5 is a rear view of the dual discharge pump;
6-9 are cross-sectional side views of other planes;
10 is a transverse side view of an alternate dual outlet pump;
FIG. 11 is a transverse side view made through the pump shown in FIG. 10; FIG.
12 is another cross sectional side view of a dual discharge pump made up of different planes;
13 is another cross sectional side view of a dual discharge pump made up of different planes;
14 is another cross sectional side view of a dual discharge pump consisting of different planes;
15 is a perspective view of a rear plate;
16 is another perspective view of the backplane;
17 is a perspective view of a front plate;
18 is another perspective view of the front panel;
19 is a perspective view of a mid-plate;
20 is a perspective view in fragments of another alternative dual discharge pump;
FIG. 21 is a cross sectional side view of the dual discharge pump and motor assembly. FIG.
Corresponding reference characters indicate corresponding parts throughout the several views of the drawings.

Various embodiments of the present invention will now be described in detail with reference to the examples described in the accompanying drawings.

1-6 include a front plate 20, a mid-plate 22 and a rear plate 24 secured to each other by a plurality of threaded fasteners 26. A dual discharge pump (10). As can be seen in FIG. 6, the fastener 26 is formed of a socket head shoulder bolt for a predetermined spacing between the faceplate 20 and the backplate 24. The driveshaft 14 is fixed for rotation with a rotor 28 that rotates with respect to the front plate 20, the middle plate 22 and the back plate 24. The front plate 20, the middle plate 22 and the back plate 24 are adjusted to be located in a housing having a cylindrical cavity. Rotation of the drive shaft 14 causes pumping of fluid at the inlet port 15 to the first outlet port 16 and the second outlet port 18. The first discharge port 16 provides high flow, low pressure discharge. The second discharge port 18 provides low flow, high pressure discharge.

The pump 10 also includes radially movable vanes 32 disposed in the plurality of radially extending slots 34 formed in the rotor 28. The distal surface 36 of each vane 32 is in contact with the inner surface 38 of the intermediate plate 22. The inner surface 38 is substantially cylindrical in shape with a center disposed in an eccentric location with respect to the rotor axis of rotation 42. The shaft 14 also rotates along the axis of rotation 42. The eccentric relationship between the surface 38 and the axis of rotation 42 defines a plurality of chambers 46 that are continuously increased and decreased between adjacent vanes 32. The first outlet port 16 is formed and arranged to be in fluid communication with a chamber 46 having a relatively large volume but decreasing size so that a relatively high flow rate of pressurized fluid is directed to the first outlet port 16. Leaving. Along the circumference in the decreasing direction of the chamber, the high pressure second outlet port 18 has a very minimal gap between the surface 38 of the intermediate plate 22 and the outer surface 50 of the rotor 28. It is arranged in connection with the chamber 46 leaving between. In the circumferential position the size of the pressure chamber 46 is relatively small, creating a relatively high pressure, low flow through the discharge port 18. A plurality of circumferentially spaced passageways 52 are provided in fluid connection with the proximal face 54 of each vane 32. The passage 52 is provided as pressurized fluid at either the low pressure outlet port 16 or the high pressure outlet port 18. The backplate 24 includes a first groove 58 that connects to a portion of the passageway 52 and the low pressure discharge port 16. The passage 59 connects the groove 58 and the first outlet port 16. The circumferentially extending second groove 60 is in fluid communication with the remaining passage 52 and the high pressure discharge port. The passage 61 connects the groove 60 and the high pressure discharge port 18. The faceplate 20 also includes similar first and second grooves 64, 66. Unlike typical vane pumps, the dual discharge pump 10 of the present invention is unbalanced due to the provision of high and low pressure discharge ports. In order to balance the loads through the pump 10, the circumferentially extending grooves 58, 64 are substantially larger than the circumferentially extending grooves 60, 66.

The faceplate 20 includes an inlet port groove 68 in fluidic connection with several chambers 46 and an inlet port 15 having a continuously increasing volume. Similar inlet port grooves 69 are provided in the backplate 24. The low pressure discharge groove 70 then extends in the circumferential direction along a mating face 72 which connects with several chambers 46 having a reduced volume. The backplate 24 also includes a corresponding low pressure discharge groove 73. Passage 76 extends through faceplate 20 leaving the side of the plate to provide low pressure fluid between first o-ring 80 and second o-ring 82. The third o-ring 84 is disposed on the back plate 24. O-rings 80, 82, and 84 sealably connect the cylindrical inner surface of the housing, not shown. Low pressure fluid is provided between seals 80 and 82 to improve sealing properties.

The faceplate 20 also includes a high pressure outlet aperture 85 in fluid communication with the second groove 66. Intermediate plate 22 includes a notch 90 to provide a high pressure fluid that fluidly connects with second outlet port 18.

10-19 show a second dual discharge pump identified by reference numeral 200. The pump 200 includes a housing 202, a front plate 204, an intermediate plate 206, and a back plate 206. Fasteners 210 connect the front plate 204, the middle plate 206, and the back plate 206. The fastener 207 secures the flange 209 of the faceplate 204 to the housing 202. Shaft 212 is fixed for rotation with rotor 214. A plurality of radially movable vanes 216 are disposed within slots 218 formed in the rotor 214. The pressure chamber 215 is defined between adjacent vanes 216, rotor 214 and intermediate plate 206. The drive shaft 212 rotates about the rotation shaft 217. Bearings 219 and 220 rotatably support drive shaft 212. A lip seal 221 is disposed inside the front plate 204 and sealingly connects the drive shaft 212.

The housing 202 includes a low pressure inlet 222, a high pressure inlet 224, a low pressure outlet 226 and a high pressure outlet 228. Intermediate plate 206 includes an asymmetrical cavity 232 that provides a pump 200 with dual discharge pressure characteristics. The first portion 236 of the asymmetric pupil 232 is defined by the first surface 238 and is spaced apart from the maximum distance at the outer surface 240 of the rotor 214. For example, the volume defined by the pressurization chamber located between adjacent vanes 216 and the first surface 238 is relatively large compared to other pressurization chambers around the circumference of the rotor 214. In particular, second surface 245 defines a second portion of asymmetric pupil 232. The second surface 246 is disposed closer to the outer surface 240 of the rotor 214 than the first surface 238. To provide pumping, the first surface 238 and the second surface 246 are curved such that a continuous pressurizing chamber of increasing volume and decreasing volume is defined when the direction of rotation of the rotor 214 is taken into account. It should be understood that it is a (curved surface).

As can be seen in the figure, the high pressure inlet 224 is associated with a volume increasing chamber, defined at least in part by the surface 246. The high pressure inlet port 249 is formed in the front plate 204. The high pressure inlet port 250 is formed on the back plate 208. The high pressure inlet ports 249 and 250 are aligned with the high pressure inlet aperture 251 extending through the intermediate plate 206.

The high pressure outlet 228 is fluidly connected to the pressure chamber 215 which is subsequently reduced in volume, at least partially defined by the surface 246. Pressurized fluid leaves the pressure chamber 215 through the high pressure outlet ports 253 and 255 of the respective front plate 204 and back plate 208. Connect the high pressure discharge ports 257 and the high pressure discharge ports 253 and 255.

The low pressure inlet 222 is in fluid communication with a cavity 252 formed between the inner surface 254 of the housing 202 and the outer surface 258 of the intermediate plate 206. As can be seen in FIGS. 14 and 19, a chamfer 260 enters a low pressure inlet passage 261 for a fluid passing through the low pressure inlet 222, which enters a chamber defined at least in part by the first surface 238. It is formed in the intermediate plate 206 to provide. Low pressure inlet ports 262 and 264 are formed in the front plate 204 and the back plate 208, respectively. Low pressure inlet ports 262, 264 provide a reservoir and passageway for the low pressure fluid entering the sequentially increasing volume chamber associated with the first surface 238. As rotor 214 rotates, pressurized fluid enters low pressure inlet ports 270 and 272. The low pressure discharge gap 276 extends through the intermediate plate 206 and connects the low pressure discharge ports 270 and 272. The high pressure fluid path is separated from the low pressure fluid path.

Rotor 214 includes a plurality of passages 292 disposed at the ends of slots 218. The faceplate 204 includes a circumferentially extending first slot 294 connected to a low pressure fluid and a circumferentially extending opposed slot 296 receiving high pressure fluid. In a similar manner, the backplate 208 includes a first slot 300 that receives low pressure fluid and a second slot 302 that receives high pressure fluid. The size and shape of each slop is such that the passage 29 allows application of pressurized fluid to the back face of the vanes 216 to maintain a connection between the respective vanes and the first and second surfaces 238 and 246. Corresponds to the position of.

20 shows an alternate dual discharge pump 320. Pump 320 is substantially similar to pump 200. For example, similar elements retain previously introduced reference numbers, including the "a" suffix at the bottom. FIG. 20 shows the possible orientation of the intermediate plate 206a with a low pressure inlet passageway 261a disposed on the opposite side of the pump to the low pressure inlet 222a. It should be taken into account that the pump 320 is vertical as shown in FIG. 20. The cavity 252a between the outer surface 258a and the inner surface 254a may be filled with fluid because of the location of the pump 320 or other fluid supply mechanism inside the reservoir. Fluid continues to be pumped to fill the pupil 252a until it reaches and enters the low pressure inlet passage 261a. For example, demanding buyers' packaging requirements for the location of piping inlets and outlets can be made using this concept.

FIG. 21 shows a typical motor and pump assembly 350 that includes a motor 352 driving a shaft 354. Shaft 354 is a monolithic, one-piece member extending through mounting plate 356. The shaft 354 is fixed for rotation with the rotor 368 of the pump 360. Pump 360 may be comprised of pump 10, pump 200, or pump 320 without departing from the scope of the present invention.

 The above described embodiments have been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, and although not particularly shown or described, are interchangeable and can be used in selected embodiments, where applicable. The same may be changed in many ways. Such variations are not to be regarded as a departure from the invention, and such modifications are intended to be included within the scope of the invention.

Claims (18)

Dual discharge pressure pump,
A housing comprising a first inlet and a second inlet and a first outlet and a second outlet;
Rotor;
A plurality of vanes driven by the rotor;
An asymmetric rotor cavity having a first surface connected by vanes and formed of at least a partially defined plurality of low pressure, high volume chambers;
The cavity includes a second surface connected by vanes and is formed at least partially into a plurality of high pressure, low volume chambers,
Wherein said rotor and vane rotate to pump substantially simultaneously a high volume low pressure fluid between a first inlet and a first outlet and a low volume high pressure fluid between a second inlet and a second outlet. The method of claim 1,
Wherein the first cavity surface is at a distance further from the rotor than the second cavity surface. The method of claim 1,
The low pressure high volume chamber forms a larger volume than the high pressure, low volume chamber. The method of claim 1,
Wherein said pump is a fixed capacity pump. The method of claim 1,
Wherein the pump comprises first, second and third plates fixed to each other, the second plate comprising an asymmetric cavity for receiving the rotor and the vanes. 6. The method of claim 5,
The first plate comprises a first outlet port connected with at least one of a low pressure, high volume chamber and a first outlet,
And a second outlet port spaced apart from the first outlet port and connected to at least one of the high pressure, high volume chamber and the second outlet. The method according to claim 6,
Said first plate comprising a first slot for receiving a low pressurized fluid and a second slot spaced apart and for receiving a high pressure fluid,
Wherein the slot provides pressurized fluid to the surface of the vane to press the vanes towards the first and second surfaces of the cavity. 8. The method of claim 7,
Wherein the second plate comprises a chamfered edge that provides a flow path to the first inlet. The method of claim 8,
The third plate comprises a first outlet port connected with at least one of a low pressure, high volume chamber and a first outlet;
Wherein the third plate is spaced apart from the first outlet port and includes a second outlet port connected with at least one of the high pressure, low volume chamber and the second outlet port. The method of claim 9,
Wherein said second plate comprises a high pressure passage connecting said second outlet port of said first plate and said second outlet port of said third plate. The method of claim 10,
Wherein the third plate comprises a low pressure, first inlet port connected to the high volume chamber and a second inlet port connected to the high pressure, low volume chamber. 12. The method of claim 11,
A storage cavity is formed between the second plate and the housing for storing low pressure fluid,
And the second plate comprises a low pressure inlet passage for allowing fluid to flow from the storage cavity to the rotor cavity. The method of claim 1,
And a monolithic shaft driven by an electric motor mounted inside the housing and a motor driving the rotor. As a fluid pump,
A housing comprising an inlet, a first outlet and a second outlet;
A rotor rotatably supported by the housing;
A plurality of vanes that are driven by the rotor and form defining pressure chambers having different volumes; And
First and second outlets receiving fluid at the inlet and connected to the chamber having a decreasing volume;
Wherein the second outlet port supplies fluid at a higher pressure and lower flow rate than the first outlet port. 15. The method of claim 14,
The pump is a fixed capacity pump. 15. The method of claim 14,
The housing comprises first, second and third plates fixed together;
And the second plate comprises a cylindrical cavity for receiving the rotor and the vanes. 17. The method of claim 16,
The first plate comprises a first outlet port connecting several pressure chambers and a first outlet,
And the plate further comprises a second outlet port spaced from the first outlet port and connected to the second outlet port. 18. The method of claim 17,
And the second outlet port is spaced circumferentially away from the first outlet port and disposed downstream of the first outlet port.

Images