U.S. patent application number 10/692978 was filed with the patent office on 2004-10-14 for fireplace assembly cover panels.
Invention is credited to Atemboski, Alan R., Rumens, Kurt W. F..
Application Number | 20040200471 10/692978 |
Document ID | / |
Family ID | 33302771 |
Filed Date | 2004-10-14 |
United States Patent
Application |
20040200471 |
Kind Code |
A1 |
Rumens, Kurt W. F. ; et
al. |
October 14, 2004 |
Fireplace assembly cover panels
Abstract
A fireplace installation assembly, comprising a fireplace
housing having an interior fire containment area, an opening in
communication with the fire area, and a cover panel covering at
least a portion of the opening. The cover panel can be configured
to have visual characteristics such that it is substantially
blocking a person's view into the fire containment area when a fire
is not burning in the fire containment area, and configured to
allow the person to see into the fire containment area when a fire
is burning therein. It is emphasized that this abstract is provided
to comply with the rules requiring an abstract. It is submitted
with the understanding that it will not be used to interpret or
limit the scope or meaning of the claims.
Inventors: |
Rumens, Kurt W. F.;
(Mukilteo, WA) ; Atemboski, Alan R.; (Mukilteo,
WA) |
Correspondence
Address: |
PERKINS COIE LLP
PATENT-SEA
P.O. BOX 1247
SEATTLE
WA
98111-1247
US
|
Family ID: |
33302771 |
Appl. No.: |
10/692978 |
Filed: |
October 24, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
10692978 |
Oct 24, 2003 |
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10411780 |
Apr 11, 2003 |
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Current U.S.
Class: |
126/512 |
Current CPC
Class: |
F24B 1/1808 20130101;
F24B 1/1806 20130101; F24B 1/192 20130101; F24C 3/004 20130101;
F24B 1/198 20130101; F24C 3/006 20130101 |
Class at
Publication: |
126/512 |
International
Class: |
F24C 003/00 |
Claims
I claim:
1. A fireplace assembly, comprising: a fireplace housing having an
interior fire containment area and an opening in communication with
the fire containment area; and a cover panel covering at least a
portion of the opening, the cover panel being configured to have a
first transmittance of light therethrough in a first direction and
a second transmittance of light therethrough in a second direction,
where in the second transmittance is greater than the first
transmittance.
2. The assembly of claim 1 wherein light traveling in the first
direction travels from an area exterior to the fire containment
area through the cover panel into the fire containment area and
light traveling in the second direction travels from the fire
containment area through the cover panel into the area exterior to
the fireplace housing.
3. The assembly in claim 1 wherein the cover panel is a one-way
mirror.
4. The assembly in claim 1 wherein the cover panel includes a
reflective coating on one side of the cover panel.
5. The assembly in claim 4, wherein the coating is a half-silvered
coating.
6. The assembly in claim 1 wherein the at least a portion of the
cover panel is comprised of multiple layers.
7. The assembly in claim 6 wherein at least a portion of at least
one layer of the multiple layers is covered by a coating, and
wherein the coating is configured to provide the first
transmittance and the second transmittance.
8. The assembly of claim 1 wherein the at least a portion of the
cover panel includes multiple panel portions covering the opening
in the fireplace housing.
9. The assembly of claim 1, further comprising: the fireplace
housing having multiple openings in communication with the fire
containment area; and at least one of the multiple openings at
least partially covered by at least one cover panel.
10. The assembly of claim 1 wherein the cover panel is moveable
relative to the fireplace housing between a first position covering
at least a portion of the opening and a second position that allows
access into fire containment area.
11. The assembly of claim 1 wherein the cover panel includes a
moveable door.
12. The assembly of claim 1 wherein the cover panel has at least
one surface that is generally a flat surface.
13. The assembly of claim 1 wherein the fireplace housing is a
housing for a direct-vent, gas-burning fireplace assembly, and
further comprising: a gas burner in the fire containment area.
14. The assembly of claim 1 wherein the fireplace assembly includes
an exterior housing and the cover panel is attached to the exterior
housing.
15. The assembly of claim 1 wherein the fireplace housing is a
wall-mounted fireplace installation, and further comprising a frame
surrounding the cover panel.
16. A fireplace assembly, comprising: a fireplace housing having an
interior fire containment area and an opening in communication with
the fire containment area; and a cover panel covering at least a
portion of the opening, at least a portion of the cover panel
having a first light transmittance therethrough in a first
direction inwardly from an exterior area through the cover panel
and into the fire containment area, and the cover panel having a
second light transmittance therethrough in a second direction
outwardly from the fire containment area through the cover panel to
the exterior area, the second light transmittance being greater
than the first light transmittance.
17. A fireplace assembly, comprising: a fireplace housing having an
interior fire containment area and an opening in communication with
the fire containment area; and a cover panel covering the opening
in the fireplace housing, the cover panel includes a one-way mirror
configured to have a first light transmittance therethrough in a
first direction inwardly from an exterior area through the one-way
mirror and into the fire containment area, and a second light
transmittance greater than the first light transmittance and in a
second direction outwardly from the fire containment area through
the cover panel and to the exterior area.
18. A fireplace installation assembly, comprising: a fireplace
housing having an interior fire containment area and an opening in
communication with the fire containment area; and a cover panel
covering at least a portion of the opening and configured with a
first visual characteristic that substantially blocks visibility
into the fire containment area from an area outside of the fire
containment area when there is not a fire in the fire containment
area, and the cover panel having a second visual characteristic
different from the first visual characteristic that makes the at
least a portion of the cover panel appear substantially transparent
when a fire is burning in the fire containment area allowing a
person to see into the fire containment area.
19. A fireplace assembly, comprising: a fireplace housing having an
interior fire containment area and an opening in communication with
the fire containment area; and a cover panel covering at least a
portion of the opening, the cover panel being a one-way mirror with
a reflective surface oriented to provide a mirrored surface visible
from a position exterior of the fire containment area when a fire
is not burning in the fire containment area and being substantially
translucent or transparent from the position exterior of the fire
containment area when a fire is burning in the fire containment
area.
20. A fireplace assembly, comprising: a fireplace housing having a
firebox with an opening; a burner assembly in the firebox; and a
cover panel covering the opening in the firebox, the cover panel
being a one-way mirror.
Description
CROSS REFERENCE TO RELATED APPLICATIONS
[0001] The present application is a continuation-in-part
application of U.S. patent application Ser. No. 10/411,780 filed on
Apr. 11, 2003, entitled DIRECT VENT FIREPLACE INSTALLATION, which
is incorporated herein by reference thereto.
TECHNICAL FIELD
[0002] The present invention is directed to fireplace assemblies,
and more particularly, toward fireplace assemblies having one or
more cover panels that cover an opening in a fireplace housing.
BACKGROUND
[0003] It is known in the art to use glass, including tinted glass,
to cover the opening in fireplaces. The tinted glass can provide an
aesthetically attractive covering over the fireplace opening that
may obscure the view of the fireplace interior when there is no
fire burning in the fireplace and may allow a person to view into
the fireplace when there is a fire burning inside the fireplace.
One attribute of tinted glass, however, is that the light
transmission characteristics for a given path through the glass is
independent of the direction the light travels. For example, the
transmission characteristics for light traveling through the glass
in one direction are the same as for light traveling through the
glass in the opposite direction. Accordingly, the tinted glass that
is dark enough to generally hide components in the fireplace when
no fire is burning may obscure the person's view into the fireplace
when a fire is burning, or the tinted glass may significantly
impact the appearance of a fire burning in the fireplace.
SUMMARY OF INVENTION
[0004] The present invention overcomes limitations of the prior art
and provides additional benefits. A brief summary of embodiments
and aspects of the invention are presented. Thereafter, a detailed
description of the illustrated embodiments is presented, which will
permit one skilled in the relevant art to understand, make, and use
aspects of the invention. One skilled in the art can obtain a full
appreciation of aspects of the invention from the subsequent
detailed description, read together with the figures, and from the
claims, which follow the detailed description.
[0005] The present invention is directed at a fireplace assembly
having a fireplace housing with an interior fire containment area
and an opening in communication with the fire containment area. At
least a portion of the opening can be covered by a cover panel. The
cover panel can be configured such that it provides apparently
varying visual characteristics from exterior to the fireplace
housing depending upon whether there is or is not a fire burning in
the fireplace.
[0006] In one embodiment of the invention, the cover panel can be
configured to have a first transmittance therethrough in a first
direction and a second transmittance therethrough in a second
direction. The second transmittance can be greater than the first
transmittance. In one aspect the invention, a half-silvered layer,
such as used in a one-way mirror, can be incorporated in or on the
cover panel to provide the first and second transmittances. In
another aspect of the invention, a single coating or multiple
coatings covering portions of the cover panel may be used to
provide the first and second transmittances. In yet another aspect
of the invention, the cover panel can be constructed of various
layers of different materials to achieve the first and second
transmittances.
[0007] In another embodiment of the invention, the cover panel is
configured to allow a visual characteristic of the cover panel to
be adjustable, there being a first visibility that substantially
prevents a person in an area exterior to the fireplace housing from
clearly seeing through the cover panel into the fire area and a
second visibility that allows the person in an area exterior to the
fireplace housing to see through the cover panel into the fire area
with greater visibility. In one aspect of the invention, the
visibility adjustment can be dependent on the cover panel being
exposed to varying amounts of heat.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] FIG. 1A is a front elevation view of a direct vent fireplace
unit in a corner-mounted furniture unit.
[0009] FIG. 1B is a side elevation view of one embodiment of the
furniture unit and fireplace unit of FIG. 1A.
[0010] FIG. 2 is a partial front elevation view of a direct vent
fireplace unit in a furniture unit in accordance with an alternate
embodiment of the invention.
[0011] FIG. 3 is an exploded, partial front isometric view of the
fireplace unit and the furniture unit of FIG. 1A.
[0012] FIG. 4 is an enlarged isometric view of the direct vent
fireplace unit of FIG. 1A shown removed from the furniture
unit.
[0013] FIG. 5 is an enlarged cross-sectional view of the direct
vent fireplace unit taken substantially along lines 5-5 of FIG.
4.
[0014] FIG. 6 is an enlarged isometric view of a contoured surround
shown removed from the fireplace unit of FIG. 4.
[0015] FIG. 7 is an isometric view of a wall-mounted, direct vent
fireplace unit shown in a wall above the ground in accordance with
an alternate embodiment of the invention.
[0016] FIG. 8 is an isometric view of a fireplace assembly in
accordance with an alternate embodiment of the invention with a
fire burning in the fire containment area.
[0017] FIG. 9 is an isometric view of the fireplace assembly of
FIG. 8 when a fire is not burning in the fire containment area.
DETAILED DESCRIPTION
[0018] Fireplace assemblies with cover panels having selected
visual characteristics are described in detail herein in accordance
with embodiments of the present invention. In the following
description, numerous specific details are discussed to provide a
thorough and enabling description for embodiments of the present
invention. One skilled in the relevant art, however, will recognize
that the invention can be practiced without one or more of the
specific details. In other instances, well-known structures or
operations are not shown, or are not described in detail to avoid
obscuring aspects of the invention. In general, alternatives and
alternate embodiments described herein are substantially similar to
the previously described embodiments, and common elements are
identified by the same reference numbers.
[0019] FIG. 1A is a front elevation view of a furniture-mounted
fireplace installation 10 in accordance with one embodiment of the
present invention. The illustrated furniture-mounted fireplace
installation 10 includes a fireplace unit 12 mounted in a furniture
unit 14. The illustrated fireplace unit 12 is a self-contained,
direct vent fireplace insert coupled to a fuel gas source 16. The
fireplace unit 12 is configured to provide heat into the room in
which the fireplace installation 10 is located when the fireplace
unit is activated, while also providing very aesthetically pleasing
fire framed by the furniture unit 14. The fireplace unit 12 fits
seamlessly within the furniture unit 14 and provides a very
attractive addition to a room or an outside area. The fireplace
unit 12 has a panel of glass 66 across the front that has a first
visual characteristic that permits a person to see into the
fireplace unit when a fire is burning therein, and a different
second visual characteristic that substantially blocks visibility
into the fireplace unit when no fire is burning.
[0020] The furniture unit 14 illustrated in FIG. 1A is a movable
corner-mounted highboy having an upper portion 18 and a lower
portion 20. The front side 22 of the furniture unit 14 faces into a
room 24 or the like, and the backside 26 is shaped and sized to
correspond to a corner 28 of the room 24. The furniture unit 14 is
configured to support and contain the fireplace unit 12 in the
upper portion 18 above the ground 30 and above the furniture unit's
lower portion 20. It is to be understood that the ground 30 can be
a floor, a foundation, the earth, or other support surface on which
the furniture unit 14 is positioned. The lower portion 20 of the
illustrated furniture unit 14 includes a display area 32 for
displaying selected items, such as artwork or the like. In
alternate embodiments, the display area 32 can include multiple
display areas, shelves, drawers, doors, or other selected features
for the decorative furniture unit 14.
[0021] In one embodiment, the furniture unit 14 has full length
side walls and a top wall that extend from the front side 22 into
the corner 28. FIG. 1B is a side elevation view of an alternate
embodiment of the fireplace installation of FIG. 1A. The front side
22 of the furniture unit 14 defines a front face extending along
the upper and lower portions 18 and 20. The upper portion 18 has no
side walls or top extending from the front side 22. Accordingly,
the front side 22 along the upper portion forms a false front that
receives the fireplace unit therein.
[0022] The lower portion 20 of the illustrated embodiment is a
cabinet-like structure with a substantially horizontal support
surface 31 extending from the front side 22. The support surface 31
is positioned so a portion of the fireplace unit 12 sits on and is
supported by the support surface. In one embodiment, the furniture
unit's lower portion 20 can have finished side walls that support
the horizontal support surface 31. In other embodiments, the lower
portion 20 does not have (or need) full side walls, and the
horizontal support surface can be supported by vertical legs or
fixtures that mount to the wall.
[0023] FIG. 2 is a partial front elevation view of a direct vent
fireplace unit 12 in an alternate furniture unit 34 in accordance
with an alternate embodiment of the present invention. The
furniture unit 34 in the illustrated embodiment is a tall, narrow,
rectangular cabinet structure configured to be positioned along a
flat portion of a wall. The furniture unit 34 of FIG. 2 also has an
upper portion 18 positioned above the ground (not shown) by a
selected distance. The fireplace unit 12 is contained in the upper
portion 18. In one embodiment, the fireplace unit 12 is positioned
so the middle area of the fireplace unit is slightly below eye
level of an average adult person standing in the room 24. Other
embodiments can have the fireplace unit 12 at other heights above
the floor.
[0024] While the furniture unit 14 of FIGS. 1A and 1B is a
corner-mounted highboy-type structure, and the furniture unit 34 of
FIG. 2 is a tall, narrow decorative cabinet, other embodiments can
include other styles of furniture units that receive the direct
vent fireplace unit 12. As an example, the furniture unit 14 can be
a bookcase, an entertainment center, an armoire, a cabinet, a
hutch, a dresser, a storage area, a corner-mounted unit, a
generally rectangular unit, a rounded or curved display unit, or
the like. The furniture unit 14 can be constructed of a variety of
materials, including, but not limited to, wood, pressboard, marble,
stone, cement, metal, composite materials, or the like.
[0025] FIG. 3 is an exploded, partial isometric view of the
fireplace installation 10 of FIG. 1. The furniture unit 14 of the
illustrated embodiment has an enlarged receptacle 36 in the front
side 22 of the furniture unit's upper portion 18. The receptacle 36
is shaped and sized to receive and contain the fireplace unit 12,
so the fireplace unit is substantially surrounded and framed by the
furniture unit 14. The furniture unit 14 can include a chimney
passageway 38 sized to receive a direct vent chimney 40 that
extends from the fireplace unit 12. In the illustrated embodiment,
the direct vent chimney 40 includes an exhaust flue 41
concentrically arranged with an air intake flue 42. The direct vent
chimney 40 is sealably connected to a flue adapter 44 on the top or
back of the fireplace unit 12. In an alternate embodiment, the
upper portion 18 of the furniture unit 14 can be configured to
allow for two separate, non-concentric flues (e.g., the exhaust
flue 41 and the air intake flue 42) to be connected to the top or
back of the fireplace unit 12. The chimney passageway 38 and the
direct vent chimney 40 of the illustrated embodiment extend toward
the top of the furniture unit 14, although alternate embodiments
can have the chimney passageway and the direct vent chimney
extending out the back or side of the furniture unit 14.
[0026] The furniture unit 14 can also have a fuel gas passageway 46
therein that receives a gas line 48, which carries the fuel gas
from the fuel gas source 16 to the fireplace unit 12. The fuel gas
passageway 46 and the gas line 48 can be routed through the
furniture unit 14 in a variety of locations to provide the
necessary connection to the fireplace unit 12. In the embodiment
shown in FIG. 1B wherein the upper portion 18 has no sides or top,
the gas line 18 connects directly to the fireplace unit 12 without
having to actually extend through the furniture unit.
[0027] FIG. 4 is an enlarged isometric view of the fireplace unit
12 shown removed from the furniture unit 14 of FIGS. 1A and 1B. As
best seen in FIGS. 3 and 4, the fireplace unit 12 includes a
contoured outer housing 50 that fits into the receptacle 36 in the
furniture unit 14 (FIG. 3). In the illustrated embodiment, the
outer housing 50 is shaped with a generally triangular back portion
to correspond to the corner-mounted configuration of the furniture
unit 14 (FIG. 3). In alternate embodiments, the outer housing 50
can have other shapes that correspond to the desired shape relative
to the furniture unit 14.
[0028] The outer housing 50 has an interior area that contains a
firebox 52. The firebox 52 is spaced apart from the outer housing
50 to define heat exchange passageways 54 between the firebox and
the outer housing. The heat exchange passageways 54 are adapted to
direct a flow of air around the firebox 52 so a flow of air moving
from the room 24 through the fireplace unit 12 is heated before the
air is blown out of the fireplace unit back into the room. The
fireplace unit 12 can include a blower coupled to the heat exchange
passageways 54 to facilitate the flow of air through the fireplace
unit.
[0029] The firebox 52 contains a burner assembly 56, such as the
Ember Fyre.RTM. burner assembly manufactured by Travis Industries
Inc. of Kirkland, Wash. The burner assembly 56 is a contoured
burner assembly that provides a simulated coal bed, which supports
simulated logs and simulates a real wood burning fire, as is seen
in FIG. 1A. The firebox 52 also contains a thermally insulative,
semi-dome-shaped surround 58 positioned adjacent to the burner
assembly 56 so as to partially extend around the burner assembly.
This heat shield at least partially shields the sides and back of
the firebox from the initial heat generated by burning fuel gas at
the burner assembly 56.
[0030] FIG. 5 is an enlarged cross-sectional view of the fireplace
unit 12 taken substantially along lines 5-5 of FIG. 4. FIG. 6 is an
enlarged isometric view of the surround 58 shown removed from the
fireplace unit 12 of FIG. 4. The illustrated surround 58 is a
contoured, arcuate member having a semi-cylindrical body portion 60
integrally connected to a quarter-spherical top portion 62 that
forms a partial dome-like top structure above the burner assembly
56. Accordingly, the contoured surround 58 defines a volume having
a shape different from the shape of the interior of the firebox 52
(FIG. 5). In the illustrated embodiment, the surround 58 is
self-supporting and is removably contained in the firebox 52. The
surround 58 is set flush onto the bottom of the firebox 52 around
the burner assembly 56 without requiring additional mounting
brackets or structures to hold the surround in place. In other
embodiments, the surround 58 can be fastened or otherwise secured
to the firebox 52 on burner assembly 56.
[0031] The front side of the surround 58 defines an arched opening
that allows for visibility from the front of the fireplace unit 12
into the surround's interior area 59 and to the burner assembly 56.
The surround 58 is shaped in size so that, when a person looks into
the firebox 52, a decorative interior surface 64 of the surround 58
around the burner assembly 56 is visible, but side walls and back
area of the firebox are blocked from view by the surround 58. The
decorative interior surface 64 has a selected pattern or shape that
can be any one of a variety of decorative designs. In the
illustrated embodiment, the decorative interior surface 64 has a
sculpted, shell-type appearance along the quarter-spherical top
portion 62, and a smooth arcuate surface on the semi-cylindrical
body portion 60. Alternate embodiments can have decorative interior
surfaces 64 with designs that simulate bricks, tiles, or a variety
of other decorative configurations. Other alternate embodiments can
have a surround 58 with a shape different from the illustrated
semi-dome shape, while being self-supporting, so the surround
stands up in the firebox 52 around the burner assembly 56.
[0032] In the illustrated embodiment, the surround 58 is made of a
molded ceramic material capable of withstanding the significant
heat generated by the burner assembly 56. In one embodiment, the
surround 58 can be made of a material or composition of materials
so the portions of the surround could change in color when a fire
is burning in the firebox 52. Other embodiments can provide
surrounds 58 made of other fire-resistant, thermally insulative
materials.
[0033] As best seen in FIG. 5, the contoured surround 58 is
positioned between the burner assembly 56 and the sides and back of
the firebox 52. The contoured surround 58 acts as a heat shield
that directs heat forwardly toward the open front portion of the
firebox 52. In the illustrated embodiment, the surround 58 acts as
a baffle and has integral exhaust passageways 65 along the side
portions that direct the hot exhaust gases from within the area of
the surround back into the upper portion of the firebox 52 and to
the exhaust flue 41 of the direct vent chimney 40. Accordingly, the
surround 58 substantially increases the heat efficiency of the
fireplace unit 12, and helps keep the back area of the firebox 52
and the backside of the outer housing 12 at cooler temperatures.
These cooler temperatures allow the fireplace unit 12 to be mounted
in the receptacle 36 of the furniture unit 14 (FIG. 3) without
requiring an excessive air space for safety purposes.
[0034] As best seen in FIGS. 3 and 4, the front of the firebox 52
is open to provide access into the firebox, such as for maintenance
of the burner assembly 56. The open front of the firebox 52 is
sealably covered by the glass 66 or the like that allows for
viewing into the firebox when there is a fire burning in the
firebox, such as at the burner assembly 56. A plurality of
conventional controls 68 are mounted in the outer housing 50 below
the firebox 52 that allows a user to control the burner assembly 56
for operation of the fireplace unit 12.
[0035] As best seen in FIGS. 1A, 1B and 3, the fireplace unit 12
has a decorative fireplace frame 70 mounted to the front side of
the outer housing 50 (FIG. 3) and around the receptacle 36 in the
furniture unit 14. The frame 70 has an arcuate opening 72
positioned adjacent to the glass that allows a person to look into
the fireplace unit 12 when a fire is burning in the firebox 52 to
see the decorative interior surface 64 of the surround 58, the
burner assembly 56, and the fire. In the illustrated embodiment,
the outer housing 50, the surround 58, and the frame 70 have a
"portrait" shape, wherein the height dimensions are greater than
the width dimensions. As a result, the tall, thin fireplace unit 12
provides an aesthetically proportioned shape relative to the
selected furniture unit 14 to provide a very handsome fireplace
installation 10. Other embodiments can include the outer housing
50, the surround 58 and the frame 70 having a "landscape" shape
that provides a proportional shape relative to selected fireplace
installation configurations.
[0036] In one embodiment, the glass 66 has a reflective
characteristic, such as a half-silvered coating, that forms a
one-way mirror. Accordingly, when there is no fire within the
fireplace unit 12 and the light in the room 24 (FIG. 1A) is
brighter than the light in the firebox 52, the glass 66 provides a
mirror-type reflection when looking at it from outside the firebox
(e.g., from the room). When the burner assembly 56 is activated and
a fire is started within the firebox 52, the light from within the
firebox is greater than the light outside of the fireplace unit 12,
so that a person can see the fire through the glass instead of
seeing the reflection.
[0037] FIG. 7 is an isometric view of a wall-mounted fireplace
installation 74 in accordance with an alternate embodiment of the
invention. This installation 74 includes a wall 76 having an
enlarged receptacle 78 formed therein that receives the fireplace
unit 12. In the illustrated embodiment, the direct vent chimney 40
is shaped and sized to extend through or within the wall 76 so as
to communicate with outside air. The receptacle 78 is positioned
well above the floor 80 and is positioned at a location remote from
and not surrounded by a conventional mantle of a fireplace. In one
embodiment, the receptacle 78 and the fireplace unit 12 are
positioned so that the middle of the firebox is roughly at eye
level for an average adult standing up.
[0038] In the illustrated embodiment, the outer housing 50 of the
fireplace unit 12 and the glass 66 are generally flush with the
wall 76, and the frame 70 is mounted against the wall, thereby
providing the decorative frame around the glass 66 and firebox 52,
respectively. The glass 66 can be transparent or it can be a
one-way mirror, as discussed above. When the glass 66 is a one-way
mirror, the frame 70 can have an appearance of being a decorative
mirror frame.
[0039] Use of a one-way mirror to cover the open front of the
firebox 52, as described above, is applicable not only to
gas-burning, direct vent fireplace installations, but to other
types of wood, pellet, or gas-burning fireplace assemblies.
[0040] As best seen in FIG. 3, the fireplace unit can be a wood or
gas-burning direct vent fireplace insert, fireplace, or a free
standing stove. The fireplace assembly can be mounted or installed
in a conventional manner in a room, or in a selected furniture unit
as discussed above. The outer housing 50 or other type of fireplace
housing has an opening in communication with the firebox 52 or
other fire containment area, and the opening is covered by one or
more pieces of glass 66 or other type of cover panels. In one
embodiment, the cover panel is a tempered, high
temperature-resistant glass. In another embodiment, the cover panel
is a door or multiple doors that contain one or more panels that
provide selected visibility into the fire containment area.
[0041] The glass 66 or cover panel is configured to allow a person
to see into the firebox 52 or other fire containment area when a
fire is burning therein, but to substantially block the person's
view into the fire containment area, such as by providing a
reflection, when a fire is not burning. In one embodiment, the
cover panel has a first transmittance of light therethrough in a
first direction and a second transmittance of light therethrough in
a second direction. The second transmittance of light is greater
than the first transmittance of light, such that a higher
percentage of the light traveling in the second direction can
travel through the cover panel than is allowed to travel through
the cover panel in the first direction. The percentages are based
on the amount of light present on one side of the cover panel
compared to the amount of that light that travels through the cover
panel and comes out on the other side.
[0042] In one aspect of this invention, light traveling in the
first direction travels from an area exterior to the outer housing
50 or other type of fireplace housing inwardly through the cover
panel into the firebox 52. Light traveling in the second direction
travels from within the fire containment area outwardly through the
cover panel to the area exterior to the fireplace housing. When the
difference in transmittance in the first and second directions is
sufficient, the cover panel can prevent the person from seeing into
the firebox 52 when there is no fire burning in the fire
containment area and can allow the person to see through the cover
panel into the firebox 52 when a fire is burning.
[0043] In one embodiment, the glass 66 or cover panel is a one-way
mirror oriented with a reflective surface facing outwardly.
Accordingly, a person in the room looking at the cover panel will
see a reflection from the cover panel when no fire is burning in
the firebox 52 and when the intensity or amount of light in the
room is greater than the intensity or amount of light from within
the fire containment area. But, when there is a fire in the firebox
52 and the intensity or amount of light from within the fire
containment area is greater than the intensity or amount of light
in the room, then the person can clearly see through the one-way
mirror into the firebox 52 to view the fire. In this embodiment,
the cover panel is one or more glass panels having the
half-silvered coating on each panel. In yet another aspects of the
invention, other materials can be used, including coatings and
multiple layers or laminates, to provide the one-way mirror
effect.
[0044] In an alternate embodiment, the glass 66 or other cover
panel can be a laminated structure with various layers of selected
materials being used to provide the first and second transmittances
of light. Multiple layers may be bonded together, held in contact
with each other, or be configured such that there is a space
between at least a portion of one or more layers.
[0045] In another embodiment, a coating, such as a half-silvered
layer, covering a portion of the cover panel can be used to provide
the first and second transmittances of light. Alternately, various
layers of selected materials and coatings can be used in
combination to achieve the first and second transmittances of
light. Accordingly, the cover panel can have one or more selected
portions of it configured as a one-way mirror, and the other
portions fully transparent, tinted, or even opaque.
[0046] In yet another embodiment, the glass 66 or cover panel can
be configured to have an adjustable visibility characteristic
between a first visibility that substantially prevents a person
from clearly seeing into the firebox 52 or other fire containment
area, and a second visibility that allows the person to see into
the fire containment area with selected increased clarity. For
example, the cover panel can be configured to have a fully
reflective or substantially opaque characteristic when no fire is
burning in the firebox 52, and a virtually transparent, tinted, or
translucent configuration when the fire is burning. In one aspect
of the invention, a thermally sensitive coating or combination of
coatings on portions of the cover panel can provide increased
visibility through the cover panel when exposed to heat and can
provide decreased visibility after cooling.
[0047] With any of the above embodiments, the glass 66 or cover
panel can have many and varied configurations. For example, the
cover panel can be securely fastened to the fireplace unit 12 or
other type of fireplace assembly over the opening, or the cover
panel can be quickly removable from the fireplace assembly. In
another aspect of the invention, the cover panel can be attached to
an exterior housing, such as the furniture unit 14 in FIG. 3. In
yet another aspect of the invention, the cover panel can be
surrounded by a decorative frame 70 as shown in FIGS. 3 and 7. In
still another aspect, the cover panel can be one or more doors that
can be opened to allow access to the interior of the firebox 52.
Additionally, the cover panel can include multiple panels wherein
each panel has a selected visibility characteristic with the
different first and second transmittances. Multiple cover panels
may be used to cover multiple openings in the fireplace
housing.
[0048] FIGS. 8 and 9 are isometric views of a fireplace assembly in
accordance with an alternate embodiment. The illustrated fireplace
assembly is a freestanding stove 100 with multiple cover panels
covering multiple openings in the fireplace housing with two cover
panels configured as doors in accordance with one embodiment of the
present invention. As best seen in FIG. 8, the stove 100 has a fire
burning in the fire containment area, and the components and the
fire are readily visible through the cover panel to a person
exterior to the fireplace assembly. As best seen in FIG. 9, the
stove does not have a fire burning in the fire containment area,
such that a person looking at the fireplace assembly sees the cover
panel as a mirrored surface.
[0049] The above description of illustrated embodiments of the
invention is not intended to be exhaustive or to limit the
invention to the precise form disclosed. While specific embodiments
of, and examples for, the invention are described herein for
illustrative purposes, various equivalent modifications are
possible within the scope of the invention, as those skilled in the
relevant art will recognize. The teachings of the invention
provided herein can be applied to other direct vent fireplace
installations, not necessarily the particular installations
described above.
[0050] While certain aspects of the invention are presented below
in certain claim forms, the inventor contemplates the various
aspects of the invention in any number of claim forms. In general,
in the following claims, the terms used should not be construed to
limit the invention to the specific embodiments disclosed in the
specification and claims, but should be construed to include all
components and methods of manufacturing the components in
accordance with the claims. Accordingly, the invention is not
limited by the disclosure, but instead the scope of the invention
is to be determined entirely by the claims.
[0051] From the foregoing, it will be appreciated that specific
embodiments of the invention have been described herein for
purposes of illustration, but that various modifications may be
made without deviating from the spirit and scope of the invention.
Accordingly, the invention is not limited except as by the appended
claims.
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