Patent Application
20240131377
This invention relates to the field of fire suppression systems, and more particularly, to a hood assembly of a fire suppression system.
Fire suppression systems for industrial and commercial applications may include mechanical fire detection lines, which may include sensors to detect fires. The mechanical fire detection lines further include one or more tensioned lines that couple the sensors together. Once a fire is detected by any sensor, the sensor breaks, and the tensioned lines that were previously held under tension are now lax. This loss in tension may be used as a control signal to activate a control box to deploy countermeasures to limit the fire. Typically, mechanical fire detection lines are installed onsite. Generally, the mechanical fire detection lines are installed in a hood of commercial applications such as kitchens. However, due to different manufacturers of hoods, and the many variations of hoods, installations of such mechanical fire detection lines may require modifications to be made to either the hoods, or the mechanical fire detection lines. As a result, the onsite installation process may be laborious and a potential for errors may also increase.
Disclosed herein is a hood assembly. The hood assembly includes a housing having first and second walls arranged opposite to each other, the first and second walls being vertically oriented with respect to a floor on which the hood assembly is placed. The hood assembly further includes a mechanical fire detection line configured to detect presence of a fire within the housing. The mechanical fire detection line is disposed between the first and second walls, and extending beyond the second wall. The hood assembly further includes a restricting element disposed on the second wall, such that the mechanical fire detection line extends beyond the second wall of the hood assembly by passing through the restricting element. The restricting element is adapted to allow movement of the mechanical fire detection line along a first direction, and restrict movement of the mechanical fire detection line along a second direction opposite to the first direction.
In one or more embodiments, the first direction is along a length of the mechanical fire detection line towards the second wall. The second direction is along the length of the mechanical fire detection line towards the first wall.
In one or more embodiments, the second wall includes a through hole through which the mechanical fire detection line passes.
In one or more embodiments, the restricting element includes a through hole. The restricting element is disposed on the second wall, such that the through hole of the restricting element is coaxial with the through hole on the second wall. The mechanical fire detection line further passes through the through hole on the restricting element.
In one or more embodiments, the second wall includes a recess. The second wall includes a through hole at the recess.
In one or more embodiments, the restricting element is disposed on the second wall at the recess.
In one or more embodiments, the mechanical fire detection line further includes an output. The mechanical fire detection line terminates at the output after it extends beyond the second wall of the hood assembly.
In one or more embodiments, the restricting element includes a locking mechanism. Actuating the locking mechanism causes the restricting element to restrict movement of the mechanical fire detection line along the second direction.
Also disclosed herein is a method for assembling a hood assembly. The method includes providing a housing having first and second walls arranged opposite to each other. The first and second walls are vertically oriented with respect to a floor on which the hood assembly is placed. The method further includes providing a mechanical fire detection line configured to detect presence of a fire within the housing. The mechanical fire detection line is disposed between the first and second walls, and extending beyond the second wall. The method further includes providing a restricting element disposed on the second wall, such that the mechanical fire detection line extends beyond the second wall of the hood assembly by passing through the restricting element. The restricting element is adapted to allow movement of the mechanical fire detection line along a first direction, and restrict movement of the mechanical fire detection line along a second direction opposite to the first direction.
In one or more embodiments, the first direction is along a length of the mechanical fire detection line towards the second wall. The second direction is along the length of the mechanical fire detection line towards the first wall.
In one or more embodiments, the method further includes providing a through hole on the second wall through which the mechanical fire detection line passes.
In one or more embodiments, the method further includes providing a through hole on the restricting element. The restricting element is disposed on the second wall such that the through hold of the restricting element is coaxial with the through hole on the second wall. The mechanical fire detection line further passes through the through hole on the restricting element.
In one or more embodiments, the method further includes providing a recess on the second wall. The second wall includes a through hole at the recess.
In one or more embodiments, the restricting element is disposed on the second wall at the recess.
In one or more embodiments, the method further includes providing the mechanical fire detection line with an output. The mechanical fire detection line terminates at the output after it extends beyond the second wall of the hood assembly.
In one or more embodiments, the method further includes providing the restricting element with a locking mechanism. Actuating the locking mechanism causes the restricting element to restrict movement of the mechanical fire detection line along the second direction.
Also disclosed herein is a fire suppression system including a hood assembly. The hood assembly includes a housing having first and second walls arranged opposite to each other, the first and second walls being vertically oriented with respect to a floor on which the hood assembly is placed. The hood assembly further includes a mechanical fire detection line configured to detect presence of a fire within the housing. The mechanical fire detection line is disposed between the first and second walls, and extending beyond the second wall. The hood assembly further includes a restricting element disposed on the second wall, such that the mechanical fire detection line extends beyond the second wall of the hood assembly by passing through the restricting element. The restricting element is adapted to allow movement of the mechanical fire detection line along a first direction, and restrict movement of the mechanical fire detection line along a second direction opposite to the first direction.
The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, features, and techniques of the invention will become more apparent from the following description taken in conjunction with the drawings.
The accompanying drawings are included to provide a further understanding of the subject disclosure of this invention and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the subject disclosure and, together with the description, serve to explain the principles of the subject disclosure.
In the drawings, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject disclosure as defined by the appended claims.
Various terms are used herein. To the extent a term used in a claim is not defined below, it should be given the broadest definition persons in the pertinent art have given that term as reflected in printed publications and issued patents at the time of filing.
In the specification, reference may be made to the spatial relationships between various components and to the spatial orientation of various aspects of components as the devices are depicted in the attached drawings. However, as will be recognized by those skilled in the art after a complete reading of the subject disclosure, the components of this invention. described herein may be positioned in any desired orientation. Thus, the use of terms such as “above,” “below,” “upper,” “lower,” “first”, “second” or other like terms to describe a spatial relationship between various components or to describe the spatial orientation of aspects of such components should be understood to describe a relative relationship between the components or a spatial orientation of aspects of such components.
Referring to
Generally, an assembly or installation of the mechanical fire detection line 106 in the hood 106 of the commercial cooking application 102 occurs on site. In some cases, the hood 106 may include conduits for carrying the mechanical fire detection line 106. However, the installation of the mechanical fire detection line 106 and the subsequent tensioning of the mechanical fire detection line 106 is generally accomplished onsite. As a result, the installation process is more laborious. Further, the chances of errors in installation may be higher, which may lead to a failure in an operation of the mechanical fire detection line 106, resulting in the fire suppression system performing sub-optimally.
The mechanical fire detection line 202 extends from the any of the first and second walls 202, 204 towards another of the first and second walls 202, 204. In the illustrated embodiment of
The mechanical fire detection line 202 may further include components such as sensors 230, and tensioned lines 232. The tensioned lines 232 are coupled to the sensors 230 and hold the sensors 230 under a predefined tension. In the event of an undesired fire, the heat of the fire may break the sensor 230, which results in the tension in the tensioned lines 232 reducing. This reduced tension may be detectable at the output 208 of the mechanical fire detection line 202, and may be used as a control signal to actuate the control box to deploy suitable countermeasures. In some embodiments, the mechanical fire detection line 202 may also include a tension indicating device (not shown) to determine that an optimum tension has been applied to the tensioned lines 232.
The hood assembly 200 further includes a restricting element 240 disposed at the through hole 210 on the second wall 204. The restricting element 240 may be disposed such that it is coaxial with the through hole 210. The restricting element 240 further includes a through holes (not shown), such that the through holes of the restricting element 240 and the second wall 204 may be coaxial. In the hood assembly 200, the mechanical fire detection line 202 may further pass through the restricting element 240 before terminating at the output 208.
The restricting element 240 is adapted to allow movement of the mechanical fire detection line 202 along a first direction, and limit movement of the mechanical fire detection line 202 along a second direction opposite to the first direction. In some embodiments, the first direction may be along the mechanical fire detection line 202 and outwards of the second wall 204, towards the output 208. In other words, the restricting element 240 may allow the mechanical fire detection line 202 to be pulled from a side of the second wall 204. This may allow for any additional tensioning of the mechanical fire detection line 202. Further, the restricting element 240 may limit movement of the mechanical fire detection line 202 towards the first wall 202. In other words, the restricting element 240 may limit the mechanical fire detection line 202 from losing tension. Thus, the restricting element 240 facilitates in maintaining the tension of the tensioned lines 232 within the hood assembly 200.
In some embodiments, the restricting element 240 may be made of a rigid material such as a metal, alloy, high density polymer, ceramic, etc. In some embodiments, the restricting element 240 may have a mechanism, such as a screw mechanism, that allows movement of the mechanical fire detection line 202 along the first direction, and limits the movement of the mechanical fire detection line 202 along the second direction.
In some embodiments, in case of the second wall having the recess 212, the restricting element 240 may have a width, such that after assembly of the restricting element 240, a surface of the restricting element 240 is flush with the second wall 204.
Thus, the hood assembly 200 provides a means to fully pre-install the mechanical fire detection line 202 within the hood assembly 200. The restricting element 240 allows the mechanical fire detection line 202 to be tensioned and limits any loss of tension that may occur in the mechanical fire detection line 202.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention as defined by the appended claims. Modifications may be made to adopt a particular situation or material to the teachings of the invention without departing from the scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention includes all embodiments falling within the scope of the invention as defined by the appended claims.
In interpreting the specification, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refer to at least one of something selected from the group consisting of A, B, C . . . and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc.
This patent application claims the benefit of priority of U.S. Provisional Patent Application No. 63/380,387, filed on Oct. 21, 2022.
| Number | Date | Country | |
|---|---|---|---|
| 63380387 | Oct 2022 | US |
