SU407153A1 - DEVICE FOR DISTRIBUTING WORKERS - Google Patents

Description

The invention relates to a device for distributing a working medium and is intended primarily for air conditioning systems. Devices for distributing the working medium are known, including a housing with pressure openings and a cover, a distribution disc with overflow and inlet channels, and a shaft with a drive. A disadvantage of the known devices is the lack of accuracy in aligning the inlet channel of the distribution disk with the discharge ports of the housing, which leads to an increase in flow resistance. In order to improve the accuracy of aligning the inlet channel of the distribution disc with the pressure openings of the housing, the shaft of the proposed device is made composite, each of the parts of which has a half coupling with end teeth, and between the coupling halves there is a thrust bearing and an insert with fingers alternating with the electromagnet core mounted on cover. At the same time, grooves are formed on the end surface of one of the coupling halves and the surface of the liner in contact with it, in which jamming elements are placed. In addition, the coupling half of one of the shaft parts is rigidly installed, while the other is movable along the shaft. FIG. 1 shows the proposed device in section, a general view; in fig. 2 is a section along A-A in FIG. I in working position; in fig. 3 - the same, in an intermediate position. The device contains a leading coupling half 1, which is rigidly connected to the shaft of the electric motor 2. The coupling half is pressed to the coupling half by means of a spring 3 that half of the coupling 4, which with the help of the end teeth engages with the driving half coupling and is connected by a key connection to the shaft 5 of the distribution disk 6 installed in supports 7 and 8. Between the half-couplings 1 and 4 are located the thrust bearing 9 and the liner 10, having fingers AND, missed into the windows of the half-coupling 4. The number and arrangement of the fingers 11 correspond to the number and location of the discharge holes 12 of the housing 13 In the coupling half 4 and in the insert 10, two diametrically arranged prismatic sockets are formed, forming, at alignment, the slots in which the wedging elements 14 are placed, for example, in the form of balls. The electromagnet 15 has a spring-loaded core 16, alternately interacting with the fingers I.

The motor 2 and the electromagnet 15 are mounted on the glass 17, which is attached to the cover 18 of the housing 13.

The device works as follows.

When the electromagnet 15 is turned on, the spring-loaded core 16 is retracted and extends beyond the circumference described by the fingers 11. The torque from the electric motor 2 is transmitted to the shaft 5, since the coupling half 1 and 4 are in engagement with their end teeth.

To stop the rotation of the shaft 5 of the distributor disk 6, the electromagnet 15 is de-energized. At the same time, the core 16 is pushed out by the action of the spring, engages with the next finger 11 and stops the insert 10. The coupling half 4 is engaged with the coupling half 1 and continues to rotate, due to which it rotates relative to the insert 10. As a result, the balls 14, rolling over the grooves, occupy an intermediate position (shown in Fig. 3) and press out the coupling half 4. Lastly, moving along the shaft 5 and compressing the spring 3, is disengaged from the half coupling 1. The transfer of rotation to the shaft 5 is stopped and the inlet channel of the distribution disc 6 is precisely aligned with one of the discharge openings 12 of the housing 13.

To align the inlet channel of the distribution disk with the next injection hole in the housing, the cycle of operation of the device is repeated in the order described above.

Subject invention

Claims (3)

1. A device for distributing a working medium, mainly in an air conditioning system, comprising a housing with pressure openings and a cover, a distribution disc with overflow and inlet channels and a shaft with a drive, characterized in that, in order to improve the accuracy of the combination of the inlet channel of the distribution disc with the discharge openings of the housing, the shaft of the device is made composite, each of the parts of which has a coupling half with end teeth, with a stop bearing between and the coupling half and insert with the fingers alternately interacting with the core of the electromagnet mounted on the cover. 2. The device according to claim 1, characterized in that grooves are formed on the end surface of one of the coupling halves and the surface of the liner in contact with it, in which the wedging elements are placed. 3. The device according to claim 1, characterized in that the coupling half of one of the shaft parts is rigidly installed, and the other is movable along the shaft. 15 12 9ig.2