Fan with differential pressure sensor

Abstract

that the fan and differential pressure sensor is mounted on a room-side airtight base plate (3) with a cavity on a wall opening (4),

Description

literature DE 102017120652 A1 (fan with sensor) DE 102012204865 A1 (wall opening) State of the art

[0001] Blower door testing devices, consisting of a fan and differential pressure sensor, are temporarily installed in window or door frames solely for measuring airtightness. Large fans are installed in the window frames for dust removal and dehumidification. If the construction site is unmonitored, a break-in could occur.

[0002] Many buildings are equipped with decentralized ventilation. For this purpose, each living space has a wall opening that is not used during the initial construction phase.

[0003] The present invention provides a blower door measuring device that is temporarily installed airtight on the room side of a wall opening with a diameter of approximately 200 mm (DE 102012204865 A1, wall opening). Since wall openings vary in size, the invention is equipped with several internally adjustable eccentric clamping elements, allowing for flexible mounting within the wall opening. Due to the large size of the fan, the differential pressure sensor is installed next to the fan, and an air gap between the hollow mounting plate and the outer wall with the wall opening ensures lateral pressure transmission to the sensor. Sensors are usually positioned in the airflow of the fan (DE 10217120652 A1). In the present invention, the sensor is positioned laterally, and the air pressure is directed to the sensor via the cavity of the base plate.Windows and doors can remain closed during ventilation and airtightness testing, and dust and moisture can be removed around the clock by the powerful fan if the existing wall openings of the decentralized ventilation system are used during the shell construction phase. A temperature switch monitors the room temperature and switches off the system if necessary. Since many new buildings do not have decentralized ventilation, the system can also be temporarily mounted in the window or door frame. The fan's speed is controlled by a potentiometer and monitored by a temperature sensor. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 102017120652 A1

[0000] DE 102012204865 A1 [0000, 0003] DE 10217120652 A1

[0003]

Claims

[1] that the fan and differential pressure sensor is mounted on a room-side airtight base plate (3) with a cavity on a wall opening (4), [2] that the fan is monitored by a sensor, preferably a temperature sensor (6), [3] that the differential pressure sensor can be closed by means of a cover (5), [4] that the hollow base plate is provided with two or more eccentric clamping elements (7) rotatable on the room side, [5] that the hollow base plate can be attached to the door or window frame using a clamp (8).

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