Clean-room ceiling module

Claim 2

A module for construction of a clean-room ceiling with lamina air flow technology, comprising: a generally rectangular housing having a ceiling and lateral walls; upper and lower vertically spaced horizontal false floors in said housing defining an upper chamber, an intermediate chamber and a lower chamber in said housing, the upper false floor having a communicating opening at one side of said housing interconnecting said upper and intermediate chambers, said lower false floor terminating at a gap from a one of said lateral walls at an opposite side of said housing to interconnect said intermediate chamber and said lower chamber; a fan in said intermediate chamber at said communication opening for inducing flow into said housing, through said upper chamber and said intermediate chamber and into said lower chamber; means forming a return air opening in a ceiling of said housing at said opposite side thereof; a plurality of high efficiency filters formed at a bottom of said housing and communicating with said lower chamber, said return air opening extending from a lateral wall of said housing at said opposite side and extending over 20-30% of a length of said housing toward said one side and over an entire width of said housing; a sound-damping lining along an underside of said ceiling and upper surface of said upper floor; sound-damping baffles on a lower side of said upper floor and an upper side of said lower floor defining a flow space between them extending to said gap in said intermediate chamber; a sound-absorption plate on a lower side of said lower floor in said lower chamber; and at least one arcuate rectifier baffle in said gap starting from said intermediate chamber above the sound-damping baffle on said upper side of said lower floor and reaching through said gap into said lower chamber.

Claim 3

The module defined in claim 1 wherein a spacing of said rectifier baffle from said sound-damping baffle on said upper side of said lower floor increases along a path of air flow from said intermediate chamber to said lower chamber through said gap.

Claim 4

The module defined in claim 2 wherein a second rectifier baffle is spaced from the first-mentioned rectifier baffle in said gap and a spacing of said rectifier baffles from one another increases along said path.

Claim 5

The module defined in claim 1 wherein said rectifier baffle is spaced above said sound-damping baffle on said upper side of said lower floor by a distance equal to 25 to 40% of the width of said flow space remaining between said sound-damping baffle.

Claim 6

The module defined in claim 3 wherein one of said rectifier baffles is disposed at a height of 20 to 30% and the other of said rectifier baffles is disposed at a height of 50 to 60% of said flow space between said sound-damping baffles.

Claim 7

The module defined in claim 3 wherein one of said rectifier baffles reaches into said lower chamber to a lesser extent than the other rectifier baffle.

Claim 8

The module defined in claim 1 wherein said fan is constructed in two parts with an inlet fastened to said upper floor and a motor driving an external rotor fastened by vibration dampers to said lower floor.

Claim 9

A module for construction of a clean-room ceiling with laminar air flow technology, comprising: a generally rectangular housing having a ceiling and lateral walls; upper and lower vertically spaced horizontal false floors in said housing defining an upper chamber, an intermediate chamber and a lower chamber in said housing, the upper false floor having a communicating opening at one side of said housing interconnecting said upper and intermediate chambers, said lower false floor terminating at a gap from a one of said lateral walls at an opposite side of said housing to interconnect said intermediate chamber and said lower chamber; a fan in said intermediate chamber at said communication opening for inducing flow into said housing, through said upper chamber and said intermediate chamber and into said lower chamber; means forming a return air opening in a ceiling of said housing at said opposite side thereof; a plurality of high efficiency filters formed at a bottom of said housing and communicating with said lower chamber, said return air opening extending from a lateral wall of said housing at said opposite side and extending over 20-30% of a length of said housing toward said one side and over an entire width of said housing; a sound-damping lining along an underside of said ceiling and upper surface of said upper floor; sound-damping baffles on a lower side of said upper floor and an upper side of said lower floor defining a flow space between them extending to said gap in said intermediate chamber; a sound-absorption plate on a lower side of said lower floor in said lower chamber; and a rectifier baffle extending over said inlet from said lateral wall at said one side perpendicular thereto and beyond a middle of said inlet.

Claim 10

A module for construction of a clean-room ceiling with laminar air flow technology, comprising: a generally rectangular housing having a ceiling and lateral walls; upper and lower vertically spaced horizontal false floors in said housing defining an upper chamber, an intermediate chamber and a lower chamber in said housing, the upper false floor having a communicating opening at one side of said housing interconnecting said upper and intermediate chambers, said lower false floor terminating at a gap from a one of said lateral walls at an opposite side of said housing to interconnect said intermediate chamber and said lower chamber; a fan in said intermediate chamber at said communication opening for inducing flow into said housing, through said upper chamber and said intermediate chamber and into said lower chamber; means forming a return air opening in a ceiling of said housing at said opposite side thereof; a plurality of high efficiency filters formed at a bottom of said housing and communicating with said lower chamber, said return air opening extending from a lateral wall of said housing at said opposite side and extending over 20-30% of a length of said housing toward said one side and over an entire width of said housing; a sound-damping lining along an underside of said ceiling and upper surface of said upper floor; sound-damping baffles on a lower side of said upper floor and an upper side of said lower floor defining a flow space between them extending to said gap in said intermediate chamber; a sound-absorption plate on a lower side of said lower floor in said lower chamber; and a rectifier baffle extending over said inlet from said lateral wall at said one side perpendicular thereto and beyond a middle of said inlet.

Claim 11

A module for construction of a clean-room ceiling with lamina air flow technology, comprising: a generally rectangular housing having a ceiling and lateral walls; upper and lower vertically spaced horizontal false floors in said housing defining an upper chamber, an intermediate chamber and a lower chamber in said housing, the upper false floor having a communicating opening at one side of said housing interconnecting said upper and intermediate chambers, said lower false floor terminating at a gap from a one of said lateral walls at an opposite side of said housing to interconnect said intermediate chamber and said lower chamber; a fan in said intermediate chamber at said communication opening for inducing flow into said housing, through said upper chamber and said intermediate chamber and into said lower chamber; means forming a return air opening in a ceiling of said housing at said opposite side thereof; a plurality of high efficiency filters formed at a bottom of said housing and communicating with said lower chamber, said return air opening extending from a lateral wall of said housing at said opposite side and extending over 20-30% of a length of said housing toward said one side and over an entire width of said housing; a sound-damping lining along an underside of said ceiling and upper surface of said upper floor; sound-damping baffles on a lower side of said upper floor and an upper side of said lower floor defining a flow space between them extending to said gap in said intermediate chamber; a sound-absorption plate on a lower side of said lower floor in said lower chamber; and a rectifier baffle extending over said inlet from said lateral wall at said one side perpendicular thereto and beyond a middle of said inlet; and an opening formed in said ceiling above said inlet for supplying conditioned air to said housing.

Claim 12

A module for construction of a clean-room ceiling with lamina air flow technology, comprising: a generally rectangular housing having a ceiling and lateral walls; upper and lower vertically spaced horizontal false floors in said housing defining an upper chamber, an intermediate chamber and a lower chamber in said housing, the upper false floor having a communicating opening at one side of said housing interconnecting said upper and intermediate chambers, said lower false floor terminating at a gap from a one of said lateral walls at an opposite side of said housing to interconnect said intermediate chamber and said lower chamber; a fan in said intermediate chamber at said communication opening for inducing flow into said housing, through said upper chamber and said intermediate chamber and into said lower chamber; means forming a return air opening in a ceiling of said housing at said opposite side thereof; a plurality of high efficiency filters formed at a bottom of said housing and communicating with said lower chamber, said return air opening extending from a lateral wall of said housing at said opposite side and extending over 20-30% of a length of said housing toward said one side and over an entire width of said housing; a sound-damping lining along an underside of said ceiling and upper surface of said upper floor; sound-damping baffles on a lower side of said upper floor and an upper side of said lower floor defining a flow space between them extending to said gap in said intermediate chamber; a sound-absorption plate on a lower side of said lower floor in said lower chamber; and a rectifier baffle extending over said inlet from said lateral wall at said one side perpendicular thereto and beyond a middle of said inlet; and an opening formed in said ceiling above said inlet for supplying conditioned air to said housing.