vacuum pump

Thân thiện

A scientist uses a vacuum pump to remove air from a sealed glass jar.

Definition

1. Noun:
   • A device that removes gas molecules from a sealed volume to create a partial vacuum: A vacuum pump is a mechanical device designed to extract air or other gases from an enclosed space, thereby lowering the pressure inside that space to create a vacuum.

Usage Examples

• Noun:
  • The laboratory technician used a vacuum pump to evacuate the chamber before the experiment.
  • A vacuum pump is an essential component in many refrigeration and air conditioning systems.
  • To preserve the documents, they were sealed in a container from which the air was removed by a vacuum pump.

Advanced Usage

• "to operate/run a vacuum pump": to start and control the functioning of the device.
  • You must operate the vacuum pump for at least ten minutes to achieve the desired pressure.
• "high-vacuum pump": a specific type of pump capable of creating a very strong vacuum, often used in scientific research.
  • The physics experiment required a high-vacuum pump to create an ultra-low-pressure environment.

Variants and Related Words

• Vacuum (n): a space entirely devoid of matter, or a space from which air has been partially removed.
  • The food was sealed in a vacuum to keep it fresh.
• Pump (n): a device used to move fluids (liquids or gases) by mechanical action.
  • She inflated the bicycle tire using a hand pump.

Synonyms

• Air pump: A general term for a pump that moves air, though not exclusively for creating a vacuum.
• Extractor pump: A pump that extracts or removes gas.

Related Phrases

• "under vacuum": a state or condition where a space has had air removed by a pump.
  • The sample was placed under vacuum to remove all moisture.
• "to pump down a chamber": to use a vacuum pump to reduce the pressure in a sealed container.
  • The first step is to pump down the chamber to the correct pressure level.

Học thuật

Noun

1. a pump that moves air in or out of something

Từ đồng nghĩa

• air pump