SU1418484A2 - Vacuum sorption pump - Google Patents

Abstract

The invention relates to the design of sorption vacuum pumps with spray getters. The purpose of the invention is to increase the efficiency of the pump. The vessel 2 with the refrigerant is placed in the housing 1. The movable sorption element 3 encloses the vessel 2 and is installed relative to it with an annular gap in which the radiation heat exchanger is placed as a set of disks. The disks are placed one relative to the other with axial gaps and alternately fixed with thermal contact on the element 3 and the vessel, which are double-walled. In their interstitial spaces 9 and 10 are placed thermoelements 7 and 8, having thermal contact with the walls. The presence of thermoelements 7 and 8 makes it possible to create between the working surface of element 3 and the refrigerant a significant gradient mp and ensure the effective operation of the active getter film when using running water as the refrigerant instead of liquid nitrogen, thereby increasing the efficiency of the pump, as well as simplifying its operation. 2 Il. SS

Description

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: The invention relates to vacuum engineering, namely to designs of sorption vacuum pumps with sprayed petters, and is an improvement of the Invention according to the author. St. No. 1268799.

; The goal was invented: and - increase the efficiency | lichnost pump.

; FIG. 1 shows a pump, a transverse section (th section; in Fig. 2 — a radiation heat exchanger, a longitudinal section.

coolant is poured in (running water). To create a thermal pressure between the heat exchanging surfaces of the disks 5 and 6 of the radiation heat exchanger, the thermoelements 7 and 8 are energized. Then the getter evaporator 4 is turned on and the sorption element 3 is set in motion. The sprayed getter is deposited on the outer surface of the element 3, cools down and actively absorbs the gas entering the pump.

Vacuum sorption pump contains Yu. The presence of thermoelements 7 and 8 allows

create between the working surface of the sorption element 3 and the refrigerant a significant temperature gradient and ensures the effective operation of the active getter film when using flowing water instead of liquid nitrogen as the refrigerant, thereby increasing the pump economy and simplifying its operation.

the case 1, the coolant vessel 2 placed in it, covering its movable (}; orbital element 3 and evaporator 4 getters. The sorption element 3 is installed relative to the vessel 2 with an annular gap g l in the latter there is a radiation heat exchanger in the form of a set of disks 5 and 6,: 1 each one with respect to the other with the spacing gaps and alternately fixed: 1 with thermal contact on the sorption Element 3 and the vessel 2. The sorption element 20 3 and the vessel 2 with the refrigerant are made of two-fold and equipped with thermocouples 7 and 8 placed in interstitial s the space | SHALL 9 and 10 and having thermal contact | with the walls.

i The pump works as follows, i After pre-evacuating; the cavity of the housing 1 to Pa to the vessel 2

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Claims (1)

Invention Formula Vacuum sorption pump according to ed. St. No. 1268799, characterized in that, in order to increase efficiency, the sorption element and the refrigerant vessel are double-walled and equipped with thermoelements located in their interstitial spaces and having thermal contact with the walls. coolant is poured in (running water). To create a thermal pressure between the heat exchanging surfaces of the disks 5 and 6 of the radiation heat exchanger, the thermoelements 7 and 8 are energized. Then the getter evaporator 4 is turned on and the sorption element 3 is set in motion. The sprayed getter is deposited on the outer surface of the element 3, cools down and actively absorbs the gas entering the pump.  The presence of thermoelements 7 and 8 allows Invention Formula Vacuum sorption pump according to ed. St. No. 1268799, characterized in that, in order to increase efficiency, the sorption element and the refrigerant vessel are double-walled and equipped with thermoelements located in their interstitial spaces and having thermal contact with the walls.  d h g S. ha J i