US 4,541,408 A · Fire-guard

Abstract

A device is provided for heating a room by convection using the heat from a conventional radiation heat source. The heating device further acts as a fireplace guard when the heat source is a fire to substantially prevent sparks or other small particles of combustion from entering the room in which the fireplace is located. The device includes a threshold unit and a plurality of spaced pipes. The pipes are supported by the threshold unit while a screen member such as metal gauze is connected between the pipes. An opening in the threshold unit is adjacent the floor surface of the room in which the heat source is located. The radiation from the heat source raises the temperature of the pipes while relatively cool air enters the opening in the threshold unit and passes into the pipes. The temperature of the air is increased by the heated pipes and exits from the top thereof to heat the room by convection. The threshold unit can comprise a number of separate units which are joined together by a hinge construction so that the length of the threshold unit can be varied and also to permit access to the radiant heat source.

Claims2

Dependent claims

A method for converting radiation heat into convection heat using a fire-guard placed on a surface adjacent to source of radiant energy located in a room to be heated by the radiant energy source, comprising:

providing a plurality of substantially straight, vertically extending pipes, each of said pipes having an inlet located adjacent to a bottom portion of each of said pipes and an outlet located adjacent to a top portion of each of said pipes;
providing a threshhold means for each of said pipes for communication with each of said pipes;
interconnecting at least two of said pipes using hinge means so that said two of said pipes are pivotal about a vertical axis;
supporting said pipes using said threshhold means;
contacting and supporting said threshhold means directly on the surface that is adjacent to the source of radiant energy;
using said threshhold means to form a barrier along the width of the fire-guard to the passage of relatively cool air;
locating each of said pipe inlets on a side of said threshhold means away from the source of radiant energy;
receiving relatively cool air into said pipes in a first direction using said pipe inlets;
directing the relatively cool air using said threshhold means in a second direction, different from the first direction, upwardly through said pipes;
preventing substantially all relatively cool air from passing through said threshhold means so that substantially all of the cool air passes into said pipe inlets;
heating the relatively cool air received in said pipes;
and
permitting heated air to pass from said outlets of said pipes into the room.

10 more elements

A fire-guard for the conversion of radiation heat into convection heat adapted to be placed on a surface in front of a source of radiant energy located in a room to be heated by the source, said fire-guard comprising:

a plurality of substantially straight, vertically extending pipes, each of said pipes having an inlet located adjacent to a bottom portion of each of said pipes and an outlet located adjacent to a top portion of each of said pipes, said pipe inlets being located so that relatively cool air is able to pass into said pipes by means of said pipe inlets, and said pipe outlets for discharging air heated by said pipes;
and
a plurality of separate supporting units, each of said supporting units supporting a single pipe, each of said supporting units contacting and being supported directly on and extending upwardly from the surface on which the fireguard is supported, said separate supporting units together forming a barrier along the width of the fire-guard to the passage of the relatively cool air, the relatively cool air being initially received at the fire-guard in a first direction and then being compelled, using said supporting units, in a second direction upwardly through said pipes wherein substantially all the relatively cool air passes through said pipes and substantially no relatively cool air passes through said supporting units, each of said supporting units including a base member supported on the surface, said base member having an open channel to receive the relatively cool air for delivery to said pipe inlet and a U-shaped member joined to said base member, said U-shaped member having a first arm, a second arm, and a linking member joining said first arm and said second arm together, each of said arms having an opening for receiving one of said pipes, at least one of said linking members and said pipe associated with said one of said linking members both being in the path of a single, straight line defined by a first point located inside the source of radiant energy and a second point located outside the source of radiant energy, said line also being perpendicular to said linking member and said associated pipe, and each of said supporting units further including hinge means disposed between each of said supporting units for interconnecting each of said supporting units to an adjacent one of said supporting units so that each of said pipes can be pivoted about a vertical axis.

Dependencies are inferred from the claim text.

Fire-guard

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Fire-guard

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Abstract

Claims2