US 11,085,164 B2Granted

Combination freezing head for nitrogen-brine freezing

AssigneeLinde Aktiengesellschaft

InventorsReiner Schiffbauer, Abraham Sliwo

Life of this patent

Estimating the term…

Loading patent…

Abstract

An apparatus for freezing ground comprises a freezing head extending along a longitudinal axis, and a first conduit for introducing a first cooling medium or a second cooling medium different therefrom into an interior of the freezing head. The first conduit opens into the interior a second conduit introduces the second cooling medium into the interior of the freezing head or draws the first and/or the second cooling medium off from the interior of the freezing head. The second conduit opens into the interior of the freezing head, the apparatus has at least three separate connections, namely a first connection, via which the first cooling medium can be introduced into the interior of the freezing head, a second connection, via which the second cooling medium can be introduced into the interior of the freezing head, and a third connection, via which the first or the second cooling means can be drawn off from the interior of the freezing head.

Claims18

Dependent claims

A ground freezing apparatus (1) comprising:

a freezing head (100) extending along a longitudinal axis (L),
a first conduit (10) for introducing cooling medium into an interior (102) of the freezing head (100), wherein the first conduit (10) opens into the interior (102), and
a second conduit (20) for introducing cooling medium into the interior (102) of the freezing head (100) or for withdrawing cooling medium (F, S) from the interior (102) of the freezing head (100), wherein the second conduit (20) opens into the interior (102) of the freezing head (100),
wherein the apparatus (1) has at least three separate connections (A1, A2, A3), a first connection (A1) for introducing a first cooling medium (F) into the interior (102) of the freezing head (100) via the first conduit (10), a second connection (A2) for introducing a second cooling medium (S) into the interior (102) of the freezing head (100) wherein said second connection (A2) is in fluid communication with either the first conduit (10) or the second conduit (20), and a third connection (A3) for withdrawing the first cooling medium or the second cooling medium (F, S) from the interior (102) of the freezing head (100).

1 more element

Dependencies are inferred from the claim text.