FR2564529A1 - DEVICE FOR ADJUSTING THE INTAKE PORT OF A ROTARY PALLET COMPRESSOR OR A MULTI-CELL PALLET COMPRESSOR - Google Patents

Abstract

DEVICE FOR CONTROLLING THE INTAKE PORT 8 OF A ROTARY VANE COMPRESSOR OR A MULTICELLULAR VANE COMPRESSOR WHOSE INLET PORT IS CONSISTED BY SEVERAL BORES 10 ARRANGED ONE BEHIND THE OTHER IN THE DIRECTION OF THE PERIPHERY IN THE CYLINDER WALL AND OR IN THE FRONT CYLINDER WALL, WHICH OPEN INTO A GAS SUPPLY DUCT 11 AND WHOSE CROSS SECTION OF THE PASSAGE CAN BE ADJUSTED BY A DISTRIBUTOR 14.

Description

l Device for adjusting the inlet of a rotary compressor to

pallets or compressor

multi-cell pallets.

  The invention relates to a device for adjusting the

  intake of a rotary vane compressor or a multi-cell vane compressor, of which

  the intake port is made up of several

  wise men in the cylinder wall, place one behind

  the other in the direction of the periphery and / or in the direction

  frontal king of the cylinder, which open into a gas supply pipe and have a diameter barely more

  greater than the thickness of the compressor fins.

  A device for adjusting the inlet of a rotary vane compressor is described, for example,

  in DE-OS Patent 31 44 712 in association with a pro-

  assigned to regulate the filling of internal combustion engines with combustion gas. Here, the adjustment of the aspirated volume of combustion gas is carried out by tilting in the inlet opening of the

  control of a rotary cylinder wall.

  DE-OS 31 06 028 discloses a multi-engine

  paddle cell capable of operating to the right or to the left, which comprises, to obtain optimum efficiency for clockwise rotation, a group of air intake and exhaust ports, and for

  left rotation another group of inlet holes

  mission and air exhaust that can be obstructed

  res alternately. Here, the orifices are arranged in a rotary adjustment sleeve which constitutes in

  same time the cylinder in which the pa-

  lettes. The two devices have in common cylinder walls arranged in rotation, which entail considerable construction and manufacturing costs, in particular to avoid significant leaks in the slots of the housing serving for the passage of the coaches.

connected to the cylinder walls.

  The object of the invention is to provide a device for adjusting the intake orifice of a rotary vane compressor or of a multicell vane compressor, the control of which can be implemented

  without leaks and which simplifies the dis-

positive as well as the compressor.

  This object is achieved in accordance with the invention by the fact that the cross section of the bores opening into the supply duct can be controlled by

a distributor.

  In particular in connection with the process of patent DE-OS 31 44 712, the invention allows a more precise adjustment

  the aspirated volume of combustion gas; simplification

  tion of the device has a favorable impact on the

  price and lets consider a long service life-

  ment. The invention will be better understood on reading the

  detailed description, given below by way of example

  ple only, of a preferred embodiment, in conjunction with the attached drawing in which:

  - Figure 1 shows a device according to the invention-

  tion mounted on a rotary vane compressor depicted

felt in cross section; and

  - Figures 2 and 3 show variants.

  Figure 1 shows a rotary vane compressor

  comprising a casing 1, a rotor 2 and rotary vanes

  tives 4 fixed on a pallet axis 3; the rotor 2 is mounted eccentrically to a cylindrical recess 5

  and the pallet axis 3 is centered relative to it.

  The rotor 2 is mounted in the casing 1 by rolling bearings (not shown) and it can be driven

  usually by belts or cogwheels.

  Between the cylinder portions 6, 7 in which

  form the largest and smallest cell deli-

  mothballed by two adjacent pallets 4, there are

  inlet and outlet ports 8, 9.

  The inlet 8 is formed by several bores

  ges 10 in the wall of the cylinder arranged one behind the other in the direction of the periphery, which open into a gas supply duct 11 and have a diameter

  barely larger than the thickness of the pallets.

  The outlet 9 is formed by a recess 12 in the cylinder wall, which opens into a conduit

of connection to a user.

  The cross sections for passage of the bores. 10 opening into the supply duct 11 can be adjusted by a rotary distributor 14 disposed at this location; the rotation of the rotary distributor can be caused by a lever 15 which is fixed to a pin (not shown) of the rotary distributor 14 which comes out

housing 1.

  As a variant of the rotary distributor 14 of FIG. 2, there is shown in the supply duct 11 a drawer

  flat 16, to adjust the cross sections of passa-

  ge of the bores 10; the flat drawer 16 can be moved in the opening direction by a rod 18 connected to the flat drawer 16 and leaving the casing 1 against the force of a

spring 17.

  FIG. 3 represents an exemplary embodiment of the rotary vane compressor according to FIGS. 1 and 2, in which the bores 10 constituting the inlet 8 are arranged in the front wall of the cylinder situated between the cylinder portions 6, 7; the cross sections for passage of these bores 10 can also be adjusted by the rotary distributor 14,

  or alternatively by the flat drawer 16.

  By analogy, the invention can be applied to a

  multi-cell vane compressor.

Claims (3)

Claims.   1. Device for controlling the inlet orifice of a rotary vane compressor or of a multi-cell vane compressor, the inlet orifice (8) of which is constituted by several bores (10) arranged one behind the other in the direction of the periphery in the cylinder wall and / or in its front wall, which open into a gas supply pipe   (11) and have a diameter barely larger than the thick-   the pallets (4) of the compressor, characterized in that the cross section of the passage of the bores (10) opening into the supply duct is adjusted by a distributor (14, 16).   2. Device according to claim 1, characterized in   what the dispenser is made in the form of distri- rotary stopper (14).   3. Device according to claim 1, characterized in that the distributor is produced in the form of a drawer flat (16).