Combined rolling shutter and ventilating box

• US 4,338,996 A
• Filed: 06/19/1980
• Issued: 07/13/1982
• Est. Priority Date: 06/21/1979
• Status: Expired due to Term

• Current Assignee: Wilhelm Frank
• Original Assignee: Wilhelm Frank
• Inventors: Frank, Wilhelm
• Primary Examiner(s): Makay, Albert J.
• Assistant Examiner(s): Joyce, Harold
• Application Number:
  US06/161,652
• Time in Patent Office: 754 Days
• Field of Search: 165/54, 165/57, 165/122, 165/DIG. 4, 165/DIG. 12, 160/26, 160/127
• US Class Current: 165/57
• CPC Class Codes: E06B 7/02 for providing ventilation, e.g. through double windows; Arrangement of ventilation roses airflow control members per se F24F13/08
• CPC Class Codes: E06B 9/17 Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
• CPC Class Codes: F24F 12/002 using an intermediate heat-transfer fluid
• CPC Class Codes: F24F 7/013 using wall or window fans, displacing air through the wall or window
• CPC Class Codes: Y02B 30/56 Heat recovery units

Abstract

A combined rolling shutter and ventilating box comprises a housing holding the rolling shutter. A ventilating box has horizontal and vertical air duct sections divided into a first duct section part receiving warm air to be exhausted from an interior room and a second duct section part receiving fresh air from the atmosphere. A ventilator exhausts the warm air through the first duct section part and the exhausted warm air is vented to the atmosphere. A fresh air inlet communicates with the second duct section and a ventilator draws the fresh air therethrough. A heat exchanger in the air duct sections extends transversely through the air flow through the first and second duct parts.

Claims

1. A combined rolling shutter and ventilating box arrangement mounted on a window frame defining a plane dividing an interior room from the atmosphere, which comprises a ventilating box mounted on the window frame and having a vertical cover facing the interior room, an outer wall facing the atmosphere and a horizontal wall interconnecting the cover and the outer wall, the vertical cover and the outer wall extending parallel to the plane, a housing holding the rolling shutter, the rolling shutter being arranged in the housing for unreeling through an opening in the housing, the opening communicating with the atmosphere and guiding the unreeled shutter for extension parallel to the plane whereby the unreeled shutter shields the plane from the atmosphere, the outer wall of the ventilating box forming one vertical wall of the housing and the housing having another vertical wall parallel to the one vertical wall and close to the vertical cover as well as a horizontal wall interconnecting the vertical walls and close to the horizontal wall of the ventilating box, the horizontal walls defining an air duct section above the housing and the vertical cover and other vertical wall defining another duct section communication with the air duct section and extending perpendicularly thereto, the duct sections being divided into a first duct section part for receiving warm air to be exhausted from the interior room and a second duct section part for receiving fresh air from the atmosphere, the cover defining a first opening in communication with the first duct section part, a ventilator in the first opening for exhausting the warm air from the interior room, the ventilator forcing the exhausted warm air through the first duct section part in a path having a vertical component in the other duct section and a horizontal component in the air duct section, diversion of the exhausted warm air from the vertical to the horizontal path component causing turbulence therein, venting means in the box at the end of the path for venting the exhausted warm air to the atmosphere, a fresh air inlet in the horizontal wall of the housing in substantially vertical alignment with the opening in the housing, the housing defining a vertical fresh air inlet channel between the opening and the air inlet, the air inlet being in communication with the second duct section whereby fresh air is received from the fresh air inlet channel in the second duct section part, diversion of the fresh air from the vertical fresh air inlet channel to the horizontal second duct section part causing turbulence therein, the cover defining a second opening in communication with the second duct section part, a ventilator in the second opening for drawing the fresh air from the atmosphere through the air inlet channel and the second duct section part, and a heat exchanger in the air duct section, the heat exchanger being comprised of a series of heat exchange tubes extending transversely to the air flow through the first and second duct section parts, the heat exchange tubes being staggered in relation to each other and the fresh air and exhausted warm air flowing in turbulent condition over the staggered tubes.