Single screw technology - How it works

Suction
Gas fills the rotor flutes before they mesh with the teeth on the bottom star wheel

Compression
As rotation continues, the gas is sealed within the space created by the rotor flute, the rotor housing and the star wheel tooth.  Continued rotation causes the volume of the rotor flute to reduce, compressing the gas

Discharge
As the maximum point of compression is reached, a discharge port is uncovered and all the gas is expelled from the rotor flute.  The action illustrated applies to the top bottom star wheel.  A mirrored action using the top star wheel occurs simultaneously on the underside of the bottom star wheel.

HallScrew product range brochure

> Download File
AW and PMcA

RAC Cooling Awards achievement

Adam Walker, one of J & E Hall’s first year apprentices has taken the...

> Read More

R404A refrigerant phase out ban comes into force 1st Jan...

J & E Hall offer comprehensive support to assist customers in the food...

> Read More
LJC

WES annonces UK's Top 50 Women in Engineering 2019

In celebration of International Women in Engineering Day 2019, the...

> Read More
Peterborough

Key role for J & E Hall units at supermarket

J & E Hall commercial condensing units are providing the cooling for a new...

> Read More
Whitehaven2

J & E Hall units impress in fishing industry project

J & E Hall commercial condensing units featured in a major project to...

> Read More

New Fusion 0115 Low Temperature Condensing Units

J & E Hall has launched new low temperature units to add to the existing...

> Read More