FR2658251A1 - CONNECTING DEVICE FOR REGENERATING AN AIR DRAIN, ESPECIALLY FOR AUTOMOTIVE VEHICLES. - Google Patents

Abstract

a) Connection device for the regeneration of an air dryer, in particular for motor vehicles. b) device characterized in that a multi-way valve (14) is connected after the air dryer (13), with a switching position (II) in which a connection is made via the dryer air (13) between the compressor (10) and the atmosphere. c) The invention relates to connection devices for the regeneration of air dryers, in particular for motor vehicles.

Description

i "Connecting device for the regeneration of a

  air dryer, in particular for motor vehicles

the "

  The invention starts from a branch device

  for the regeneration of an air dryer in a pneumatic system, in which the air dryer is connected after the compressor, while all

  two are placed one behind the other on the canali-

  compressed air, and the device comprising

  minus a dispensing valve to control the circulation

  air outlet through the air dryer

  connection between the compressor and the device used

  lisateur. In pneumatic systems, especially for motor vehicles, use is made of

  regenerative dryers, to prevent icing of

  Adjustments and Corrosion The drying agent must be regularly regenerated via

  appropriate connection device.

  For this purpose, a number of known branching lines use a relatively large number of valves. In addition, for the regeneration of the desiccant, only the

  Existing air volume in the system is available.

  The object of the invention is to avoid these drawbacks

  and, for this purpose, it is characterized in that a multi-way valve is connected after the air dryer, with a switching position

  in which a connection is made by means of

  of the air dryer between the compressor and the

  phere. The connection device according to the invention for the regeneration of an air dryer and which has the characteristics defined above,

  the advantage that with an ad-

  missible, it is possible to regenerate the dryer

  the needs, since the operating time

  the compressor for regeneration of the dryer

  is controlled by appropriate detectors.

  Other advantages of the invention are

  many other features of this invention,

  the following description and drawings.

  According to another characteristic of the invention

  a first multi-way valve is available.

  between the compressor and the air dryer, with a switching position in which a connection is made between the compressor and the atmosphere and that a multi-way valve is connected upstream of the compressor, valve through which a link is

  likely to be realized from the channeling

  compressed air downstream of the air dryer by

  intermediate of the first multi-way valve to the inlet of the compressor, and in that, downstream of the branch of this connection, there is arranged a

  check valve which can open in the direction of

  from the air dryer to the user devices.

  According to another characteristic of the invention

  the multi-way valves are gate valves

3/2 ways.

  According to another characteristic of the invention

  tion, multi-way valves are likely to

  to be electromagnetically operated and to be

through a program.

  Two embodiments of the invention

  are described in the description below and represent

  attached to the drawings These represent

  schematically two examples of implementation of

connection services.

  In FIG. 1, reference numeral 10 denotes a

  compressor, which is driven by a drive motor.

  11 This compressor is connected to a duct

  compressed air 12 which enters a dryer 13 which extends to a 3/2 way valve 14, with the switching positions I and II and extends

  then to a 3/2 way valve 15 also comprising

  I and II switching positions of the dispensing valve 15, the compressed air pipe 12 goes to user devices, and in addition, a second compressed air pipe 16 is connected to

  the dispensing valve 15 and also goes to

  These may be compressed air cylinders 17, 18 with which control valves 19, 20, are associated. Valve valves 14, 15

  are likely to be electromagnetic actuated-

  is lying. In the case of dryer 13, it is a

  regenerative dryer, thanks to which icing of

  Users and corrosion are avoided.

  desiccant gent in the dryer must be regenerated

  regularly by means of a suitable compressed air

  This is done in the exemplary embodiment according to FIG. 1, in that for the regeneration, the dispensing valve 14 is brought into the switching position II, so that the air flowing through the dryer is discharged into the the atmosphere The moisture contained in the desiccant, which had been

  accumulated in the compressor by compressed air pre-

  cedemment repressed, is then driven by the air thus evacuated. The electrically actuable 3/2 way valve 15 serves to distribute

  compressed air to the pipes of the appliances

sateurs.

  In the exemplary embodiment according to FIG.

  2, a 3/2 way valve 22 capable of being ac-

  electromagnetically, with the switching positions I and II, is disposed on the compressed air pipe 12 upstream of the compressor 10 downstream

  of the compressor and upstream of the dryer 13, is also

  arranged on the compressed air line 12, a 3/2 way valve 23 may be actuated

  electromagnetically from the air duct com-

  12 is awarded, downstream of the dryer 13, a pipe 24 which returns to the dispensing valve 22 On the

  compressed air pipe 12, downstream of this drift

  There is a non-return valve 25 which can be opened in the direction from the dryer to the user devices.

  With this embodiment, it is pos-

  This is then the case when the dispensing valve 22 is in the switching position II. If the dispensing valve 23 is also in the switching position II, then a vacuum is produced in the dryer 13 through the

  pipe 24 and the distribution valve 22.

  Thanks to this depression, a significant regeneration

  more efficient and faster dryer 13 is obtained

naked.

Claims (4)

  1. Connecting device for the regeneration   air dryer (13) in a pneumatic system.   in which the air dryer is connected after the compressor (10), while both are placed one behind the other on the compressed air pipe (12), and the device comprising at least a distributor valve for controlling the flow of air through the air dryer by performing a   connection between the compressor and the device used   a connection device characterized in that a multi-way valve (14) is connected to the   following the air dryer (13), with a position of   mutation (II) in which a connection is made via the air dryer (13) between the compressor (10) and the atmosphere.   2. Connection device for the regeneration   air dryer according to the preamble of claim 1, characterized in that a first multi-way valve (23) is arranged between the compressor (10) and the air dryer (13), with a switching position (II) in which a connection is made between the compressor and the atmosphere and in that a multi-way valve (22) is connected upstream of the compressor, valve through which a connection is likely to be made from the compressed air line (12) downstream of the dryer   air through the first valve   sieurs lanes (23) to the inlet of the compressor, and in that, downstream of the bypass of this connection, is disposed a check valve (25) which can open in the direction from the air dryer to the user devices.   3. Device according to any one of   1 or 2, characterized in that the van-   Several channels are 3/2 way valves.   4. Device according to claim 3,   characterized in that the multi-way valves are electromagnetically operable and controllable by a program.