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DE-102024133171-A1 - Temperature trigger for an air duct closure device

DE102024133171A1DE 102024133171 A1DE102024133171 A1DE 102024133171A1DE-102024133171-A1

Abstract

The invention relates to a temperature release (1) for an air duct closure device (20) with an actuating plunger (2), wherein the actuating plunger (2) is arranged in a rest position in an inner sleeve (3), wherein the actuating plunger (2) is spring-loaded in the rest position, wherein the inner sleeve (3) is a tubular cylinder, wherein the actuating plunger (2) forms the stop (7) in the rest position, wherein the inner sleeve (3) is arranged in an outer sleeve (8), wherein the outer sleeve (8) opens at one end into a coupling basket (9) and is open at the other end, wherein the actuating plunger (2) has a first coupling (10) at the other end of the stop (7), and wherein a fusible link (4) is arranged between the inner sleeve (3) and the outer sleeve (6).

Inventors

  • Rainer Müller

Assignees

  • SCHAKO KG Zweigniederlassung Kolbingen

Dates

Publication Date
20260513
Application Date
20241113

Claims (8)

  1. Temperature release (1) for an air duct closure device (20) with an actuating plunger (2), wherein the actuating plunger (2) is arranged in a rest position in an inner sleeve (3), wherein the actuating plunger (2) is spring-loaded in the rest position, characterized in that the inner sleeve (3) is a tubular cylinder, wherein the actuating plunger (2) forms a stop (7) in the rest position, wherein the inner sleeve (3) is arranged in an outer sleeve (8), wherein the outer sleeve (8) opens at one end into a coupling basket (9) and is open at the other end, wherein the actuating plunger (2) has a first coupling (10) at the other end of the convex cone (7), wherein a fusible link (4) is arranged between the inner sleeve (3) and the outer sleeve (6).
  2. Temperature trigger (1) according to Claim 1 , characterized in that the stop (7) rests on an edge of the inner sleeve (3).
  3. Temperature trigger (1) according to Claim 1 or 2 , characterized in that the inner sleeve (3) (6) on the other side of the actuating plunger (2) is flush with the opened outer sleeve (8).
  4. Temperature trigger (1) according to one of the preceding claims, characterized in that the outer sleeve (8) has a protrusion ring (11) at one end, wherein the protrusion ring (11) rests on an indentation ring (12) in the rest position.
  5. Temperature trigger (1) according to one of the preceding claims, characterized in that the coupling basket (9) has a fastening device (13).
  6. Air duct closure device (20) for a fire damper with a release mechanism (21), wherein the release mechanism (21) is arranged in a housing (22), wherein the release mechanism (21) has a release bolt (23), wherein the release bolt (23) comprises a spring (24) which biases the release bolt (23) in its rest position, wherein the release bolt (23) has a release button (25) at one end and at the other end, in a guide (26), the temperature release (1) according to the Claims 1 until 5 characterized in that the first coupling (10) of the temperature release (1) is interchangeably connectable with a first coupling receptacle (27) of the actuator (23).
  7. Air duct closure device (20) according to Claim 6 , characterized in that the guide (26) is encompassed at one end by the housing (22) and has a second coupling receptacle (28) at the other end, wherein the second coupling receptacle (28) is interchangeably connectable to the fastening device (13) of the coupling basket (9) of the temperature release (1).
  8. Air duct closure device (20) according to Claim 6 or 7 , characterized in that the guide (26) forms a conical sleeve (29) tapering away from the housing (22), in which the release bolt (23) is arranged.

Description

Technical field The invention relates to a temperature trigger for an air duct closure device according to the preamble of claim 1. State of the art Such temperature triggers are known and available on the market in a wide variety of forms and designs. The DE 10 2020 208 843 A1 Disclosing, for example, a valve fitting for a pressurized container, such as a gas tank, storage tank, pressure cylinder, or liquefied gas tank, the fitting secures the container's opening by means of a melting ring element, which is meltable above a predetermined melting temperature. A force can be generated from the pressurized container towards a filter element in the direction of the melting ring element. When the melting ring element is intact, a medium can be discharged from the container through the filter element and out of the valve bore. When the melting ring element is melted, the force can be applied to the sealing surface of the filter element, preventing the medium from escaping through the filter element and thus from the valve bore. A similar construction describes the US 2,194,541 A , wherein a valve construction and in particular a safety valve mechanism is disclosed, which is particularly suitable for use in connection with tanks, bottles and other containers for gas and which shows a spring-loaded device which, by means of a fusible link, is triggered by heat, yields to the spring force and closes the valve if necessary. Further information will be provided on the GB 2 417 425 A The patent discloses an oxygen delivery device comprising an oxygen source and a flexible oxygen line, wherein the flexible oxygen line has a safety valve in the form of a spring-loaded fusible link that prevents the valve from closing. In the event of a fire, the fusible link melts, causing the spring to close the safety valve and thereby interrupting the supply of oxygen to the fire. Reference is also made to the DE 73 28 137 U The document states that a fire protection damper mounted pivotably in a ventilation system, the mechanism of which includes a thermal fuse designed as a fusible link or as a glass cartridge that bursts under heat, which in the event of a fire actuates the fire protection damper and closes the ventilation duct of the ventilation system. In addition, attention is drawn to the JP 2009-294097 A referenced, which reveals a similar fusible link for a gas meter. Further information will be provided on the US 5,791,367 A The document discloses a pressure relief device that is normally closed but, under certain design parameters, moves to an open state, requiring fluid to flow from a relatively high-pressure chamber inside a container to a relatively low-pressure atmosphere surrounding the pressure relief device. A plug housing has a through-hole that connects the chamber inside the container to the outside atmosphere. A plug is located in the through-hole. A fusible alloy at least partially fills a cavity or passage, preferably formed between the plug and the plug housing. In the event of a malfunction, such as an external fire, the temperature of the molten alloy rises, causing it to soften or melt. This, in turn, releases the plug. In the field of ventilation and air conditioning technology, such devices are primarily needed for fire and smoke containment. For example, they are used in conjunction with fire dampers or disc valves to close off openings to a room in the event of a fire, preventing the fire from spreading to that room or from flooding it with smoke as much as possible. Such a safeguard is, for example, from the DE 199 11 246 B4 This is a fire protection shut-off device for ventilation ducts, consisting of a mounting housing with a valve seat arranged therein and a valve closing element held in the open position by spring action, which springs into the closed position at a predetermined temperature, wherein the valve closing element has a valve rod surrounded by a closing spring, wherein the valve rod is associated with a locking device which locks the valve rod and, via the valve rod, the valve closing element in the closed position, wherein the valve rod is guided in a holder bridging the mounting housing cross-section, and wherein the holder, as a locking device, has a hollow cone for the engagement of a locking cone arranged on the valve rod. Furthermore, it is evident from the EP 1 762 276 A2 A release device for triggering at least one shut-off element and/or smoke extraction element closing a duct of an air handling system is known. Here, too, a thermally releasable retaining element is shown, which is operatively connected to a drive unit for the shut-off element, holding the shut-off element in the open position during normal operation and the smoke extraction element in the closed position. The retaining element has a pin-like, encapsulated design and projects into the interior of the duct. The retaining element is designed as a hollow profile, with a cap placed on the free end of the profile lo