WO2007037718A1 - Trochoid rotary machine (variants) - Google Patents

Abstract

The invention relates to technical engineering, in particular to positive displacement hydraulic machines, more specifically to hydraulic engines and pumps provided with internal gear rotors, in particular to the multi-phase use thereof. The inventive machine comprises an external rotor (6) provided with internal toothing (7), an internal rotor (8), which is eccentrically arranged therein, provided with external toothing (9) and is rigidly connected to a shaft in such a way that increasing and decreasing spaces are formed between the teeth and roots of the two rotors, and annular end discs (21, 22), which are coaxial with the external rotor (6) and are adjacent by the flat side surface thereof to the both end faces of the external and internal rotors (6, 8) through the entire thickness of said flat side surface. Said machine is provided with an elastic flexible polymer coating. The annular end discs (21, 22) are rigidly connected to the external rotor (6) end faces in such a way that a single rotary part is formed by means of threaded elements. The thickness of the flat annular surface of each end disc (21, 22) is produced according to a determined ratio.

Description

 TROCHOID ROTARY MACHINE (OPTIONS)

Technical field

The invention relates to the field of engineering, in particular

volumetric displacement hydraulic machines, namely hydraulic

motors and pumps with internal gearing of rotors, and in particular

to multiphase their use.

State of the art

A trochoid rotary machine is known from the patent literature,

comprising an external rotor with internal teeth and mounted

inside it with an eccentricity, an internal rotor with external teeth,

rigidly connected to the shaft, with the formation of working cavities

suction and discharge between the teeth and cavities of both rotors

(see JP 2003322088, 11/14/2003, F 04 C 2/10).

This machine is not reliable and durable at

operation with a working environment containing abrasive inclusions.

From the patent literature is known, adopted as a prototype,

trochoidal rotor machine containing an external rotor with internal teeth and installed inside it with eccentricity

internal rotor with external teeth rigidly connected to the shaft, with

the formation of the working cavities of the suction and discharge between

teeth and hollows of both rotors, also ring end disks,

coaxial with an external rotor adjacent to a flat annular

surface to both ends of the external and internal rotors throughout

the thickness of this annular surface (SU 1714164 A2, 09/22/1987, F 01

C 1/14).

In a known technical solution, surfaces are optimized

internal engagement of both rotors, which leads to an increase

coefficient of performance of the machine. However not optimized

relative sliding speeds of the end surfaces of these

rotors, which significantly reduces the reliability and durability of the machine,

especially with its multiphase design and operation with

working medium containing abrasive inclusions.

The problem to be solved and the technical result achieved

The objective of the invention is to increase the reliability and

the durability of the rotary machine by reducing the relative

sliding speeds of end surfaces of internal and external rotors for operation on liquid, gas-liquid and gas

work environments, including work environments with abrasive

inclusions.

Summary of the invention

To solve the problem with the achievement of the declared

technical result trochoidal rotary machine according to the first

an embodiment comprising an external rotor with internal teeth and

an internal rotor installed inside it with an eccentricity with

external teeth

rigidly connected to the shaft with the formation of working cavities

suction and discharge between the teeth and troughs of both rotors, and

also ring end disks coaxial with an external rotor,

adjacent to a flat annular surface to both ends

external and internal rotors throughout the entire thickness of this annular

the surface according to the invention is provided with elastic resilient

polymer coated, ring end disks are rigidly connected with

the ends of the outer rotor with the formation of a single part of rotation

by threaded elements placed on the axes of symmetry

each tooth of the external rotor at the mid-height of this tooth, thickness / s / of the flat annular surface of each end disk

made in accordance with the ratio:

C = / H ~ £ / - / 0, l ÷ 8.0 / e,

Where:

D is the outer diameter of the outer rotor, mm.,

d is the diameter of the hollows of the inner rotor, mm.,

e - eccentricity between the axes of rotation of the external and internal

rotors, mm.

The external rotor can be equipped with through-holes,

placed in the hollows of his teeth.

With elastic elastic polymer coating can be

the working contact surface of both rotors is made.

With elastic elastic polymer coating can be

made working contact surface of the outer rotor.

With elastic elastic polymer coating can be

made working contact surface of the inner rotor.

With elastic elastic polymer coating can be

an external rotor is made along the perimeter of its cross section.

Both rotors can be made of polymeric materials. To solve the problem with the achievement of the declared

technical result trochoidal rotary machine according to the second

an embodiment comprising an external rotor with internal teeth and

an internal rotor installed inside it with an eccentricity with

external teeth, rigidly connected to the shaft with the formation of workers

cavities of suction and discharge between the teeth and cavities of both

rotors, as well as ring end disks, coaxial with external

rotor adjacent to a flat annular surface to both

the ends of the external and internal rotors throughout the thickness of this

the annular surface according to the invention is provided with an elastic

resilient polymer coating, ring end discs hard

connected with the ends of the outer rotor with the formation of a single part

rotation by means of adjusting threaded rings coaxial with

external rotor, thickness / s / flat annular surface of each

the end disk is made in accordance with the ratio:

C = / --- / - / 0.1 ÷ 8.0 / e,

Where:

D is the outer diameter of the outer rotor, mm.,

d is the diameter of the hollows of the inner rotor, mm.,

e - eccentricity between the axes of rotation of the external and internal

rotors, mm. The external rotor can be equipped with through-holes,

placed in the hollows of his teeth.

With elastic elastic polymer coating can be

the working contact surface of both rotors is made.

With elastic elastic polymer coating can be

made working contact surface of the outer rotor.

With elastic elastic polymer coating can be

made working contact surface of the inner rotor.

With elastic elastic polymer coating can be

an external rotor is made along the perimeter of its cross section.

Both rotors can be made of polymeric materials.

The ratio C / - / OD ÷ 8.0 / e obtained

experimentally.

List of drawings

The invention is illustrated by drawings.

In FIG. 1 schematically shows a longitudinal section of a trochoid

rotary machine. In FIG. 2 - cross section of a trochoid rotary machine with

through windows located in the cavities of the teeth of the outer rotor.

In FIG. 3 - cross section of a trochoid rotary machine without

through windows in the cavities of the teeth of the outer rotor.

In FIG. 4 - longitudinal section of a trochoid rotary machine

(first option).

In FIG. 5 is a longitudinal section of a trochoid rotary machine

(second option).

Detailed Description and Embodiments

A trochoid rotary machine is placed inside the housing for 1 s

a cylindrical cavity 2 and channels 3 suction and 4 discharge

working medium, laterally closed by end caps 5. Machine

consists of an external rotor 6 with internal teeth 7, coaxially

placed inside the cavity 2 and from the inner rotor 8 with external

teeth 9 mounted inside the outer rotor 6 s

eccentricity "e" between the axes 10 and 11 of the rotation of the outer rotor 6

and internal rotor 8, respectively. The inner rotor 8 is rigid

connected to the shaft 12 by means of a key 13. The external rotor 6 may be

made with through windows 14 located in the hollows of it teeth 7. The teeth 9 of the inner rotor 8 are made included in

tooth cavities 7 of the outer rotor 6 on one side and tightly

in contact with the heads of the teeth 7 of the outer rotor 6 in place,

diametrically opposite to the point of engagement with tooth cavities 7

on the other hand, with the formation of the cavity 15 of the suction and cavity 16

injection. The number of teeth 7 of the outer rotor 6 exceeds

the number of teeth 9 of the inner rotor 8 per unit. To both ends 17 and

18 of the outer rotor 6 and to both ends 19 and 20 of the inner rotor 8

adjacent (a gap of about 0.05 mm.) ring end disks 21 and 22,

each of which is rigidly connected to the corresponding end

external rotor 6 with the formation of a single part of rotation. In the zone

pairing each end disk 21 or 22 with the end

surfaces 17, 19 or 18, 20 respectively of the outer rotor 6 and

internal rotor 8, i.e. on both sides of these rotors are installed on

two O-rings 23, 24 and 25, 26, the first of which is located

in the groove of the end surface of the inner rotor 8, and the second in

the groove of the disk 21 or 22 between its outer annular surface

and the surface of the cylindrical cavity 2 of the housing 1. Rigid connection

a disk with an external rotor 6 can be performed as by

individual threaded elements, for example, studs 27, placed on

axes 28 of symmetry of each tooth 7 of the outer rotor 6 at the level mid-height of this tooth (option 1, Fig. 4), and by

installation threaded ring 29, coaxial with the outer rotor 6

(option 2, figure 5). Working contact surface of both rotors

rotational node or each of them can be performed with

elastic resilient polymer coating. Both rotors 6 and 8 can

be made entirely of polymeric materials.

The trochoid rotary machine can work as in pump mode,

and engine mode.

When operating in hydraulic mode, the working fluid is supplied

under pressure into the expanding working cavity 15 and leads to

rotation of the rotational assembly with its rotors, first leading to

movement around its axis of the outer rotor 6, and then through

internal gearing of rotor teeth leading to rotational

the movement of the shaft 12. The volume of the working cavities 16 is reduced and

working fluid is displaced through them.

The implementation of the ring end disks 21 and 22, all

a flat annular surface 26 adjacent to both ends 17 and

18 of the outer rotor 6 and the inner rotor 8 throughout the thickness / s / this

annular surface reduces leakage due to elimination of gaps and sealing of working cavities 15 and 16, increasing

coefficient of performance of the machine.

When the machine is in pump mode, the shaft 12, which in this

case is a drive shaft, rotates the inner

rotor 6, which through internal engagement of its teeth 9 with

teeth 7 of the outer rotor 6 are rotationally driven

last. When rotating the rotors of the rotational assembly, the working

the fluid enters the suction cavity 15, the working volume

which expands, and then from the injection cavity 16, the volume of which

decreases, is crowded out to the consumer.

Industrial applicability and technical achievement

result

By optimizing the thickness / s / flat ring size

end disk surfaces and mating abutment surfaces

disks with the ends of both rotors of the rotational assembly, as well as

due to the presence of elastic elastic coating of working contact

sealing surfaces of the teeth of the rotors is achieved seal

work surfaces and chamber sealing - working cavities

suction and discharge, and therefore increases the efficiency of the machine. Achieving increased machine reliability and durability

provided by lowering relative speeds

rotor working surfaces and end surfaces of both rotors

relatively flat annular surfaces of the disks.

Claims

Claim 1. A trochoid rotary machine containing an external rotor with internal teeth and mounted inside it with eccentricity internal rotor with external teeth rigidly connected to the shaft with the formation of the working cavities of the suction and discharge between teeth and hollows of both rotors, as well as ring end disks, coaxial with an external rotor adjacent to a flat annular surface to both ends of the external and internal rotors throughout the thickness of this annular surface, characterized in that the machine equipped with an elastic elastic polymer coating, annular end disks are rigidly connected with the ends of the external rotor with the formation of a single part of rotation through threaded elements placed on the axes of symmetry of each external tooth rotor at mid-height of this tooth, thickness / s / flat the annular surface of each end disk is made in according to the ratio: C = / --- / - / 0.1 ÷ 8.0 / e, Where: D is the outer diameter of the outer rotor, mm., d is the diameter of the hollows of the inner rotor, mm., e - eccentricity between the axes of rotation of the external and internal rotors, mm. 2. The machine according to p. 1, characterized in that the external rotor is equipped with through windows located in the cavities of its teeth. 3. The machine according to claim 1, characterized in that with elastic resilient polymer coated working contact surface both rotors. 4. Machine according to 1, characterized in that with elastic resilient polymer coated working contact surface external rotor. 5. Machine according to 1, characterized in that with elastic resilient polymer coated working contact surface internal rotor. 6. Machine according to 1, characterized in that with elastic resilient a polymer coating made the outer rotor around its perimeter cross section. 7. Machine according to 1, characterized in that both rotors are made of polymeric materials. 8. A trochoid rotary machine containing an external rotor with internal teeth and mounted inside it with eccentricity internal rotor with external teeth rigidly connected to the shaft with the formation of the working cavities of the suction and discharge between teeth and hollows of both rotors, as well as ring end disks, coaxial with an external rotor adjacent to a flat annular surface to both ends of the external and internal rotors throughout the thickness of this annular surface, characterized in that the machine equipped with an elastic elastic polymer coating, annular end disks are rigidly connected with the ends of the external rotor with the formation of a single part of rotation through the installation threaded rings coaxial with external rotor, thickness / s / flat the annular surface of each end disk is made in according to the ratio: C = / £ _! / _ / Od ÷ 8.0 / e, Where: D is the outer diameter of the outer rotor, mm., d is the diameter of the hollows of the inner rotor, mm., e - eccentricity between the axes of rotation of the external and internal rotors, mm. 9. The machine according to p. 8, characterized in that the outer rotor is equipped with through windows located in the cavities of its teeth. 10. The machine according to p. 8, characterized in that with elastic resilient polymer coated working contact surface both rotors. 11. Machine according to 8, characterized in that with elastic resilient polymer coated working contact surface external rotor. 12. Machine according to 8, characterized in that with elastic resilient polymer coated working contact surface internal rotor. 13. Machine according to 8, characterized in that with elastic resilient a polymer coating made the outer rotor around its perimeter cross section. 14. Machine according to 8, characterized in that both rotors are made of polymeric materials.