A vacuum pump removes gas molecules from a sealed volume to create a partial vacuum by creating a pressure difference between two spaces. Common types include positive displacement pumps, which use mechanical action, and momentum transfer pumps, which utilize high-speed jets to move gas molecules. The document discusses various pump types and their operational principles.

1. vacuum pump
working principleS
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TECHNOLOGY

2. A vacuum pump is a device that
removes gas molecules from a
sealed volume to create a
partial vacuum. The working
principle of a vacuum pump is
based on the principle of
creating a pressure difference
between two connected
spaces. The pump essentially
pumps gas molecules from a
low-pressure area to a high-
pressure area, effectively
creating a vacuum in the low-
pressure area.

3. There are several types of
vacuum pumps, but they all work
on the same basic principle of
removing gas molecules from a
sealed volume. Some of the most
common types of vacuum pumps
include

4. Positive displacement
pumps:
These pumps use mechanical
action to trap gas molecules
and move them from the low-
pressure area to the high-
pressure area. Examples of
positive displacement pumps
include rotary vane pumps and
screw pumps.

5. Momentum transfer pumps:
These pumps use high-speed jets of gas
to transfer momentum to the gas
molecules in the low-pressure area,
which propels them towards the
high-pressure area. Examples of
momentum transfer pumps include
diffusion pumps and turbomolecular
pumps.

6. Momentum transfer pumps:
These pumps use high-speed jets of
gas to transfer momentum to
the gas molecules in the low-
pressure area, which propels
them towards the high-pressure
area. Examples of momentum
transfer pumps include diffusion
pumps and turbomolecular
pumps.

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