Assembly for collecting material entrained in a gas stream

An assembly for collecting material that is entrained in a gas stream, which comprises:

• a. a housing having a head part and a body part, and inlet and outlet ports for the gas that is to be filtered, in which at least one of the ports (the “chamber port ”) is provided in the head part which has internal walls which define a primary chamber within the head part having a first end communicating with the chamber port and an opening at a second end, in which the axes of the first and second ends of the primary chamber are non-aligned, and
• b. a flow conduit device having a first end which can fit into the primary chamber in the head part of the housing through the opening at the second end so that it is directed generally towards the chamber port in the housing and a second end which is directed towards the body part of the housing to provide a conduit for gas to flow between the body part of the housing and the outlet port, the flow conduit device being configured to reduce turbulence in the flow of gas within the said chamber between the chamber port and the body part of the housing resulting from the non-alignment of the said axes,
• in which the assembly includes a seal between the wall of the primary chamber at or towards the second end thereof and the flow conduit device at the second end thereof, and
• in which the distance between the seal and the first end of the flow conduit device, measured along the centerline thereof is not less than the square root of the cross-sectional area of the flow conduit device at the second end thereof.

An assembly for collecting material that is entrained in a gas stream, which comprises:

• a. a housing having a head part and a body part, and inlet and outlet ports for the gas that is to be filtered, in which at least one of the ports (the “chamber port ”) is provided in the head part which has internal walls which define a primary chamber within the head part having a first end communicating with the chamber port and an opening at a second end, in which the axes of the first and second ends of the primary chamber are non-aligned, and
• b. a flow conduit device having a first end which can fit into the primary chamber in the head part of the housing through the opening at the second end so that it is directed generally towards the chamber port in the housing and a second end which is directed towards the body part of the housing to provide a conduit for gas to flow between the body part of the housing and the outlet port, the flow conduit device being configured to reduce turbulence in the flow of gas within the said chamber between the chamber port and the body part of the housing resulting from the non-alignment of the said axes,
• in which the assembly includes a seal between the wall of the primary chamber at or towards the second end thereof and the flow conduit device at the second end thereof, and
• in which the flow conduit device contains at least one vane positioned within it so that the flow of gas along the conduit between the first and second ends thereof passes over the vane and is smoothed by it.

An assembly for collecting material that is entrained in a gas stream, which comprises:

• a. a housing having a head part and a body part, and inlet and outlet ports for the gas that is to be filtered, in which at least one of the ports (the “chamber port ”) is provided in the head part which has internal walls which define a primary chamber within the head part having a first end communicating with the chamber port and an opening at a second end, in which the axes of the first and second ends of the primary chamber are non-aligned, and
• b. a flow conduit device having a first end which can fit into the primary chamber in the head part of the housing through the opening at the second end so that it is directed generally towards the chamber port in the housing and a second end which is directed towards the body part of the housing to provide a conduit for gas to flow between the body part of the housing and the outlet port, the flow conduit device being configured to reduce turbulence in the flow of gas within the said chamber between the chamber port and the body part of the housing resulting from the non-alignment of the said axes,
• in which the assembly includes a seal between the wall of the primary chamber at or towards the second end thereof and the flow conduit device at the second end thereof,
• in which the assembly further includes a tubular filter element having a wall of a filtration medium which defines a hollow space within it so that the gas stream flows through its wall, and in which the flow conduit device communicates at its second end with the hollow space within the filter element.

An assembly for collecting material that is entrained in a gas stream, which comprises a tubular filter element having a wall of a filtration medium which defines a hollow space within it, arranged for the gas stream to flow through its wall, and a housing in which the filter element is located, the housing comprising a head part and a body part in which the filter element is located and having inlet and outlet ports for the gas that is to be filtered, in which:

• a. at least one of the ports is provided in the head part, and the head part has internal walls which define a primary chamber within it communicating with the said port and with the hollow space within the tubular filter element, with the axis of the port and the axis of the tubular filter element being non-aligned,
• b. the filter element includes a flow conduit device having a first end which is directed generally towards the port in the housing and a second end which is directed towards the hollow space within the tubular filter element,
• the assembly including a seal between the wall of the primary chamber at or towards the free end thereof and the flow conduit at the second end thereof, the flow conduit extending from the hollow space into the primary chamber and being configured to reduce turbulence in the flow of gas within the said chamber between the port and the hollow space resulting from the non-alignment of the said axes.

A separator assembly for collecting material that is entrained in a gas stream, which comprises:

• a. a housing having a head part and a body part, and inlet and outlet ports for the gas that is to be filtered, in which at least the outlet port is provided in the head part which has internal walls which define a primary chamber within the head part having a first end communicating with the outlet port and an opening at a second end, in which the axes of the first and second ends of the primary chamber are non-aligned
• b. a flow conduit device having a first end which can fit into the primary chamber in the head part of the housing through the opening at the second end so that it is directed generally towards the outlet port in the housing and a second end which is directed towards the body part of the housing to provide a conduit for gas to flow between the body part of the housing and the outlet port, the flow conduit device being configured to reduce turbulence in the flow of gas within the said chamber between the outlet port and the body part of the housing resulting from the non-alignment of the said axes,
• c. an outlet tube extending from the second end of the flow conduit device into the housing body through which gas flows between the housing body and the outlet port, and
• d. a flow director located downstream of the inlet port so that gas flowing into the housing flows over the flow director and so that the incoming gas is made to follow a generally helical path within the housing,
• in which the assembly includes a seal between the wall of the primary chamber at or towards the second end thereof and the flow conduit device at the second end thereof.

An assembly for collecting material that is entrained in a flow stream, which comprises:

• a. a housing having a head part and a body part, and inlet and outlet ports in the head for the flow to be filtered, in which the head part has internal walls which define a first chamber for flow through the head part between a first one of the inlet and outlet ports, and the body part of the housing, and a second chamber for the flow between a second one of the inlet and outlet ports and the body of the housing, and in which the first chamber has a first end communicating with the first one of the ports and an opening at a second end for communicating with the body part of the housing, in which the axes of the first and second ends of the first chamber are non-aligned, and
• b. a flow conduit device having a first end which can fit into the first chamber in the head part of the housing through the opening at the second end so that it is directed generally towards the first one of the inlet and outlet ports in the housing and a second end which is directed towards the body part of the housing to provide a conduit for flow between the first one of the ports and the body part of the housing through the first chamber, the flow conduit device being configured to reduce turbulence in the flow within the first chamber between the first one of the ports and the body part of the housing resulting from the non-alignment of the said axes,
• in which the assembly includes a seal between the wall of the first chamber in the head part of the housing and the flow conduit device to separate (i) the flow stream flowing between the first one of the ports and the body part through the head part through the first chamber and through the flow conduit device, and (ii) the flow stream flowing between the body part and the second one of the inlet and outlet ports through the second chamber.

An assembly for collecting material that is entrained in a flow stream, which comprises a tubular filter element having a wall of filtration medium which defines a hollow space within it, arranged for the flow stream to flow through its wall, and al housing in which the filter element is located, the housing comprising a head part and a body part in which the filter element is located and having inlet and outlet ports for the flow that is to be filtered, in which:

• a. the inlet and outlet ports are provided in the head part, and the head part has internal walls which define:
• i. a primary chamber for flow through the head part between a first one of the inlet and outlet ports and the hollow space within the tubular filter element, with the axis of the first of the inlet and outlet ports and the axis of the tubular filter element being non-aligned, and
• ii. an auxiliary chamber for flow between the second one of the inlet and outlet ports and the body of the housing.
• b. the filter element includes a flow conduit device having a first end which is directed generally towards the first of the inlet and outlet ports in the housing and a second end which is directed towards the hollow space within the tubular filter element,
• the assembly including a seal between the wall of the primary chamber at or towards the free end thereof and the flow conduit at the second end thereof, the flow conduit extending from the hollow space into the primary chamber and being configured to reduce turbulence in the flow within the said chamber between the port and the hollow space resulting from the non-alignment of the said axes.