U.S. patent application number 15/019508 was filed with the patent office on 2017-08-10 for convection fan.
The applicant listed for this patent is Wolf Appliance, Inc.. Invention is credited to David Mark Cink.
Application Number | 20170227238 15/019508 |
Document ID | / |
Family ID | 57708377 |
Filed Date | 2017-08-10 |
United States Patent
Application |
20170227238 |
Kind Code |
A1 |
Cink; David Mark |
August 10, 2017 |
CONVECTION FAN
Abstract
A convection fan includes a plurality of blades mounted for
rotation with a shaft, a guiding plate mounted to partially
surround the plurality of blades, and a fan-motor mount. The
fan-motor mount includes a top plate and a bottom plate through
which the shaft extends, a motor fastener that mounts a motor to
the bottom plate in isolation from the top plate, a guiding plate
fastener that mounts the guiding plate to the top plate in
isolation from the bottom plate, an insulator between the top plate
and the bottom plate, and a plate fastener that mounts the top
plate to the bottom plate. The plate fastener includes a fastener
and a standoff that surrounds a portion of the fastener between the
top plate and the bottom plate and within the bottom plate to
provide a thermal break.
Inventors: |
Cink; David Mark; (Marshall,
WI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Wolf Appliance, Inc. |
Fitchburg |
WI |
US |
|
|
Family ID: |
57708377 |
Appl. No.: |
15/019508 |
Filed: |
February 9, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F24C 15/322 20130101;
F04D 13/06 20130101 |
International
Class: |
F24C 15/32 20060101
F24C015/32; F04D 29/52 20060101 F04D029/52; F04D 13/06 20060101
F04D013/06 |
Claims
1. A convection fan comprising: a plurality of blades mounted to a
shaft to rotate when the shaft rotates; a guiding plate mounted to
partially surround the plurality of blades; and a fan-motor mount
comprising a top plate through which the shaft extends; a bottom
plate through which the shaft extends; a motor fastener that mounts
a motor to the bottom plate in isolation from the top plate; a
guiding plate fastener that mounts the guiding plate to the top
plate in isolation from the bottom plate; an insulator between the
top plate and the bottom plate; and a plate fastener that mounts
the top plate to the bottom plate, the plate fastener comprising a
fastener; and a standoff that surrounds a portion of the fastener
between the top plate and the bottom plate and within the bottom
plate to provide a thermal break.
2. The convection fan of claim 1, wherein the insulator is air.
3. The convection fan of claim 1, wherein the insulator is formed
of an insulating material.
4. The convection fan of claim 3, wherein the insulating material
is selected from the group consisting of a mica plate, an
insulation fiber, a ceramic, and glass.
5. The convection fan of claim 1, wherein the standoff includes a
head and a body that extends from the head, wherein a shaft of the
fastener fits within an aperture formed through the head and the
body.
6. The convection fan of claim 5, wherein the head mounts within
the bottom plate.
7. The convection fan of claim 6, wherein the fastener extends
below the bottom plate.
8. The convection fan of claim 5, wherein a head of the fastener
mounts above the top plate.
9. The convection fan of claim 8, wherein the top plate is
positioned between an end of the body of the standoff opposite the
head of the standoff and the head of the fastener.
10. The convection fan of claim 1, wherein the fastener extends
through the standoff.
11. A convection fan assembly comprising: a motor; a shaft
connected to the motor, wherein the motor is configured to rotate
the shaft; and a fan comprising a plurality of blades mounted to
the shaft to rotate when the shaft rotates; a guiding plate mounted
to partially surround the plurality of blades; and a fan-motor
mount comprising a top plate through which the shaft extends; a
bottom plate through which the shaft extends; a motor fastener that
mounts the motor to the bottom plate in isolation from the top
plate; a guiding plate fastener that mounts the guiding plate to
the top plate in isolation from the bottom plate; an insulator
between the top plate and the bottom plate; and a plate fastener
that mounts the top plate to the bottom plate, the plate fastener
comprising a fastener; and a standoff that surrounds a portion of
the fastener between the top plate and the bottom plate and within
the bottom plate to provide a thermal break.
12. The convection fan assembly of claim 11, wherein the standoff
includes a head and a body that extends from the head, wherein a
shaft of the fastener fits within an aperture formed through the
head and the body.
13. The convection fan assembly of claim 12, wherein the head
mounts within the bottom plate.
14. The convection fan assembly of claim 13, wherein the fastener
extends below the bottom plate.
15. The convection fan assembly of claim 12, wherein a head of the
fastener mounts above the top plate.
16. The convection fan assembly of claim 15, wherein the top plate
is positioned between an end of the body of the standoff opposite
the head of the standoff and the head of the fastener.
17. The convection fan of assembly claim 11, wherein the fastener
extends through the standoff.
18. A convection oven comprising: a plurality of walls that form an
enclosure; a convection fan at least partially mounted within the
enclosure, the convection fan comprising a motor; a shaft connected
to the motor, wherein the motor is configured to rotate the shaft;
and a fan comprising a plurality of blades mounted to the shaft to
rotate when the shaft rotates; a guiding plate mounted to partially
surround the plurality of blades; and a fan-motor mount comprising
a top plate through which the shaft extends; a bottom plate through
which the shaft extends; a motor fastener that mounts the motor to
the bottom plate in isolation from the top plate; a guiding plate
fastener that mounts the guiding plate to the top plate in
isolation from the bottom plate; an insulator between the top plate
and the bottom plate; and a plate fastener that mounts the top
plate to the bottom plate, the plate fastener comprising a
fastener; and a standoff that surrounds a portion of the fastener
between the top plate and the bottom plate and within the bottom
plate to provide a thermal break; and a control to control
operation of the convection fan.
19. The convection oven of claim 18, wherein the standoff includes
a head and a body that extends from the head, wherein a shaft of
the fastener fits within an aperture formed through the head and
the body, wherein the head mounts within the bottom plate.
20. The convection oven of claim 18, wherein the standoff includes
a head and a body that extends from the head, wherein a shaft of
the fastener fits within an aperture formed through the head and
the body, wherein a head of the fastener mounts above the top
plate.
Description
BACKGROUND
[0001] A cross-flow or tangential fan is usually long in relation
to its diameter, so the flow approximately remains two-dimensional
away from its ends. The cross-flow fan uses an impeller with
forward curved blades, placed in a housing consisting of a rear
wall and a vortex wall. The cross-flow fan may be used in a
convection oven where it is exposed to high temperatures sometimes
exceeding 800 degrees Fahrenheit.
SUMMARY
[0002] In an example embodiment, a convection fan is provided. The
convection fan may include, but is not limited to, a plurality of
blades mounted to a shaft to rotate when the shaft rotates, a
guiding plate mounted to partially surround the plurality of
blades, and a fan-motor mount. The fan-motor mount may include, but
is not limited to, a top plate through which the shaft extends, a
bottom plate through which the shaft extends, a motor fastener that
mounts a motor to the bottom plate in isolation from the top plate,
a guiding plate fastener that mounts the guiding plate to the top
plate in isolation from the bottom plate, an insulator between the
top plate and the bottom plate, and a plate fastener that mounts
the top plate to the bottom plate. The plate fastener may include,
but is not limited to, a fastener, and a standoff that surrounds a
portion of the fastener between the top plate and the bottom plate
and within the bottom plate to provide a thermal break.
[0003] In an example embodiment, a convection fan assembly is
provided. The convection fan assembly may include, but is not
limited to, a motor, a shaft connected to the motor, and a fan. The
motor is configured to rotate the shaft. The fan may include, but
is not limited to, a plurality of blades mounted to the shaft to
rotate when the shaft rotates, a guiding plate mounted to partially
surround the plurality of blades, and a fan-motor mount. The
fan-motor mount may include, but is not limited to, a top plate
through which the shaft extends, a bottom plate through which the
shaft extends, a motor fastener that mounts the motor to the bottom
plate in isolation from the top plate, a guiding plate fastener
that mounts the guiding plate to the top plate in isolation from
the bottom plate, an insulator between the top plate and the bottom
plate, and a plate fastener that mounts the top plate to the bottom
plate. The plate fastener may include, but is not limited to, a
fastener, and a standoff that surrounds a portion of the fastener
between the top plate and the bottom plate and within the bottom
plate to provide a thermal break.
[0004] In another example embodiment, a convection oven is
provided. The convection oven may include, but is not limited to,
the convection fan, a plurality of walls that form an enclosure in
which the convection fan is at least partially mounted, and a
control to control operation of the convection fan.
[0005] Other principal features of the disclosed subject matter
will become apparent to those skilled in the art upon review of the
following drawings, the detailed description, and the appended
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0006] Illustrative embodiments of the disclosed subject matter
will hereafter be described referring to the accompanying drawings,
wherein like numerals denote like elements.
[0007] FIG. 1 depicts a front perspective view of a convection fan
in accordance with an illustrative embodiment.
[0008] FIG. 2 depicts a front view of the convection fan of FIG. 1
in accordance with an illustrative embodiment.
[0009] FIG. 3 depicts a top, front perspective view of the
convection fan of FIG. 1 in accordance with an illustrative
embodiment.
[0010] FIG. 4 depicts a zoomed front view showing a motor mounting
portion of the convection fan of FIG. 1 in accordance with an
illustrative embodiment.
[0011] FIG. 5 depicts the zoomed front view of FIG. 4 with an
insulator removed in accordance with an illustrative
embodiment.
[0012] FIG. 6 depicts a top, back perspective view of a bottom
flank and a motor mount and fasteners of the convection fan of FIG.
1 in accordance with an illustrative embodiment.
[0013] FIG. 7 depicts a top perspective view of the bottom flank of
FIG. 6 in accordance with an illustrative embodiment.
[0014] FIG. 8 depicts a top perspective view of the motor mount of
FIG. 6 in accordance with an illustrative embodiment.
[0015] FIG. 9 depicts a side perspective view of a standoff of a
fan fastener in accordance with an illustrative embodiment.
[0016] FIG. 10 depicts a bottom perspective view of the standoff of
FIG. 9 in accordance with an illustrative embodiment.
[0017] FIG. 11 depicts a front view of the motor mount and
fasteners of FIG. 6 in accordance with an illustrative
embodiment.
[0018] FIG. 12 depicts a zoomed front perspective view showing the
motor mounting portion of the convection fan of FIG. 1 in
accordance with an illustrative embodiment.
[0019] FIG. 13 depicts a bottom perspective view of the motor mount
of FIG. 6 including the fan fastener in accordance with an
illustrative embodiment.
[0020] FIG. 14 depicts a front perspective view of fasteners of the
bottom flank and the motor mount of FIG. 6 in accordance with an
illustrative embodiment.
[0021] FIG. 15 depicts a front perspective view of a convection
oven with the convection fan of FIG. 1 in accordance with an
illustrative embodiment.
DETAILED DESCRIPTION
[0022] Referring to FIG. 1, a front perspective view of a
convection fan 100 is shown in accordance with an illustrative
embodiment. Referring to FIG. 2, a front view of convection fan 100
is shown in accordance with an illustrative embodiment. Referring
to FIG. 3, a top, front perspective view of convection fan 100 is
shown in accordance with an illustrative embodiment. In the
illustrative embodiment, convection fan 100 is a cross flow fan 100
that may be mounted in a convection oven to provide convective heat
to items to be cooked.
[0023] For example, FIG. 15 shows a front perspective view of a
convection oven 1500 with convection fan 100 in accordance with an
illustrative embodiment. Convection oven 1500 may include a
plurality of walls that define an enclosure in which the items to
be cooked are placed as understood by a person of skill in the art.
One or more controls 1504 of various types may be used to control
operation of convection fan 100 as understood by a person of skill
in the art. Illustrative controls include a knob or other user
interface electrically, mechanically, or electro-mechanically
connected to receive a user input as to a desired operation of
convection oven 1500 and to control an operation of one or more
heating elements, convection fan 100, and other components to
achieve operation of convection oven 1500.
[0024] In the illustrative embodiment of FIG. 15, convection oven
1500 may include a first convection fan 1506 and a second
convection fan 1508 mounted adjacent to two rear corners of the
enclosure of convection oven 1500. A fewer or a greater number of
convection fans may be included in convection oven 1500 and may be
mounted in various locations and with different orientations than
that shown as needed to achieve a desired convective heat
distribution in the enclosure as understood by a person of skill in
the art.
[0025] As used herein, the term "mount" includes join, unite,
connect, couple, associate, insert, hang, hold, affix, attach,
fasten, bind, paste, secure, hinge, bolt, screw, rivet, solder,
weld, glue, form over, form in, layer, mold, rest on, rest against,
abut, and other like terms. The phrases "mounted on", "mounted to",
and equivalent phrases indicate any interior or exterior portion of
the element referenced. These phrases also encompass direct
mounting (in which the referenced elements are in direct contact)
and indirect mounting (in which the referenced elements are not in
direct contact, but are connected through an intermediate element)
unless specified otherwise. Elements referenced as mounted to each
other herein may further be integrally formed together, for
example, using a molding or thermoforming process as understood by
a person of skill in the art. As a result, elements described
herein as being mounted to each other need not be discrete
structural elements unless specified otherwise. The elements may be
mounted permanently, removably, or releasably unless specified
otherwise.
[0026] Use of directional terms, such as top, bottom, right, left,
front, back, upper, lower, horizontal, vertical, behind, etc. are
merely intended to facilitate reference to the various surfaces of
the described structures relative to the orientations introduced in
the drawings and are not intended to be limiting in any manner
unless otherwise indicated.
[0027] Referring again to FIGS. 1, 2, and 3, convection fan 100 may
include a fan 102, a motor 104, and an electrical connector 106.
Electrical connector 106 is connected to an electrical power source
(not shown) to provide power to motor 104. Motor 104 is mounted to
fan 102 to rotate a shaft 208 to circulate heated air in convection
oven 1500. Motor 104 may be a direct current (DC) or an alternating
current (AC) motor of a variety of different types including a
stepper motor, an induction motor, etc.
[0028] Fan 102 may include shaft 208, a bearing housing 110, a top
flank 112, a guiding plate 114, a vortex structure 116, a fan-motor
mount 118, blades 200, one or more body disks 202, a top disk 204,
and a bottom disk 206. A plurality of plate fasteners 308 mount fan
102 to motor 104. Fan 102 may include a greater or a fewer number
of components. The one or more components of fan 102 may be formed
of one or more materials, such as various metals (i.e., galvanized
steel, stainless steel, aluminum, etc.), glass, and/or plastics
having a sufficient strength and rigidity as well as thermal and
permeability properties sufficient to support the described
application.
[0029] The blades 200 may be forward curved blades. The blades 200
are elongated and mounted to each other to form a cylinder
resulting in a long cylindrical impeller. The blades 200 are
inserted through holes in the one or more body disks 202, in top
disk 204, and in bottom disk 206. The one or more body disks 202,
top disk 204, and bottom disk 206 provide stability to the blades
200. In an alternative embodiment, fan 102 may not include any of
the one or more body disks 202.
[0030] Shaft 208 extends from motor 104 through fan-motor mount 118
and top flank 112 and into bearing housing 110 at a top of
convection fan 100. The bearing housing 110 includes a bearing and
associated elements that mount shaft 208 for rotation with a
minimum of axial movement. The blades 200 are mounted for rotation
with shaft 208.
[0031] A housing of fan 102 includes guiding plate 114, fan-motor
mount 118, and top flank 112. Guiding plate 114 is mounted between
fan-motor mount 118 and top flank 112. Guiding plate 114 may
include a curved wall 300, a first mounting flange 210, and a
second mounting flange 212. Curved wall 300 partially surrounds the
blades 200 to direct air flow generated by rotation of the blades
200. First mounting flange 210 and second mounting flange 212
extend from curved wall 300 and are configured to provide surfaces
through which convection fan 100 may be mounted to one or more of
the walls of convection oven 1500. For example, first mounting
flange 210 and second mounting flange 212 may include holes through
which one or more fasteners may be used to mount convection fan 100
to convection oven 1500.
[0032] Vortex structure 116 also mounts between fan-motor mount 118
and top flank 112 and is positioned and shaped to direct air flow.
Vortex structure 116 may include a bottom vortex flange 302, a
first vortex wall 304, a second vortex wall 306, a bottom vortex
fastener 214, a bottom screw 216, a top vortex flange (not shown),
a top vortex fastener 218, and a top screw 220. First vortex wall
304 and second vortex wall 306 are mounted to each other to form a
v-shape that opens outward though other shapes, numbers of walls,
orientations, etc. may be used depending on a mounting location and
a desired airflow within the enclosure of convection oven 1500.
Bottom vortex fastener 214 and bottom screw 216 are mounted to
bottom vortex flange 302 to mount first vortex wall 304 and second
vortex wall 306 to fan-motor mount 118. Top vortex fastener 218 and
top screw 220 are mounted to the top vortex flange to mount first
vortex wall 304 and second vortex wall 306 to top flank 112. A
fewer or a greater number of fasteners of various types may be used
to mount first vortex wall 304 and second vortex wall 306 to top
flank 112 and to fan-motor mount 118.
[0033] In a cross flow fan, air is drawn in over the entire length
of the blades 200. The airflow is diverted and accelerated by first
vortex wall 304 and second vortex wall 306. An area between first
mounting flange 210 and second vortex wall 306 defines an airflow
intake side of convection fan 100. An area between second mounting
flange 212 and first vortex wall 304 defines an airflow discharge
side of convection fan 100. The airflow also exits over the entire
length of the blades 200. First vortex wall 304 directs an
approximately uniform laminar airflow out of convection fan
100.
[0034] Referring to FIG. 4, a zoomed front view showing a motor
mounting portion of convection fan 100 is shown in accordance with
an illustrative embodiment. Referring to FIG. 5, the zoomed front
view of FIG. 4 with an insulator 404 removed is shown in accordance
with an illustrative embodiment. Fan-motor mount 118 may include a
bottom flank 400, a motor mount 402, an insulator 404, the
plurality of plate fasteners 308, and a plurality of motor mount
housings 406. Insulator 404 fills a space between bottom flank 400
and motor mount 402. Insulator 404 is formed of an insulating
material such as mica plate, insulation fiber, ceramic, glass, etc.
In an alternative embodiment, no insulation may be provided between
bottom flank 400 and motor mount 402 such that the space is filled
with air. A distance between bottom flank 400 and motor mount 402
may be determined based on a space within which convection fan 100
is mounted and a thickness of insulator 404, if any.
[0035] Bottom vortex fastener 214 may include a screw 408 and a
bottom nut 410 mounted to screw 408 to insure that bottom vortex
flange 302 abuts a top surface of bottom flank 400. A nut may
similarly be mounted to bottom screw 216. Bottom screw 216 and
screw 408 may be identical. The plurality of plate fasteners 308
may each include a standoff 500 and a screw 502 that is inserted
through standoff 500 to extend partially from a bottom of motor
mount 402. The plurality of plate fasteners 308 mount bottom flank
400 to motor mount 402. The plurality of motor mount housings 406
each cover a motor fastener of a plurality of motor fasteners 504.
The plurality of motor fasteners 504 mount motor 104 to motor mount
402 in isolation from bottom flank 400 that may be exposed to a
heat within the enclosure of convection oven 1500. A plurality of
guiding plate fasteners 506 mount guiding plate 114 to bottom flank
400.
[0036] Referring to FIG. 6, a top, back perspective view of bottom
flank 400 and motor mount 402 are shown in accordance with an
illustrative embodiment. Referring to FIG. 7, a top perspective
view of bottom flank 400 is shown in accordance with an
illustrative embodiment. Top flank 112 may include a plate similar
to bottom flank 400. Bottom flank 400 may include a top plate 600,
a first shaft aperture wall 602, a plurality of guiding plate
fastener aperture walls 700, a plurality of fan fastener aperture
walls 702, and a plurality of vortex fastener aperture walls 704.
Top plate 600 is generally flat on both sides and is sized and
shaped based on the arrangement of vortex structure 116 and guiding
plate 114.
[0037] First shaft aperture wall 602, the plurality of guiding
plate fastener aperture walls 700, the plurality of fan fastener
aperture walls 702, and the plurality of vortex fastener aperture
walls 704 form openings through top plate 600. First shaft aperture
wall 602 is sized, shaped, and positioned to accommodate shaft 208.
The plurality of guiding plate fastener aperture walls 700 are each
sized, shaped, and positioned to accommodate a fastener shaft 1400
(shown referring to FIG. 14) of a guiding plate fastener of the
plurality of guiding plate fasteners 506 such that a head 1402
(shown referring to FIG. 14) of the guiding plate fastener abuts a
bottom surface of top plate 600. The plurality of fan fastener
aperture walls 702 are each sized, shaped, and positioned to
accommodate a fastener shaft 1408 (shown referring to FIG. 14) of
screw 502 such that a head 1410 (shown referring to FIG. 14) of
screw 502 abuts a top surface of top plate 600. The plurality of
vortex fastener aperture walls 704 are each sized, shaped, and
positioned to accommodate a fastener shaft 1412 (shown referring to
FIG. 14) of bottom screw 216 and of screw 408 of bottom vortex
fastener 214 such that a head 1414 (shown referring to FIG. 14) of
bottom screw 216 and of screw 408 abuts a bottom surface of top
plate 600.
[0038] Referring to FIG. 8, a top perspective view of motor mount
402 is shown in accordance with an illustrative embodiment. Motor
mount 402 may include a bottom plate 604, a second shaft aperture
wall 606, a plurality of standoff aperture walls 800, and a
plurality of motor fastener aperture walls 802. Second shaft
aperture wall 606 is sized, shaped, and positioned to accommodate
shaft 208. The plurality of standoff aperture walls 800 are each
sized, shaped, and positioned to accommodate a head 900 (shown
referring to FIG. 9) of standoff 500. The plurality of motor
fastener aperture walls 802 are each sized, shaped, and positioned
to accommodate a fastener shaft 1404 (shown referring to FIG. 14)
of a motor fastener of the plurality of motor fasteners 504 such
that a head 1406 (shown referring to FIG. 14) of the motor fastener
abuts a top surface of bottom plate 604 without contacting top
plate 600.
[0039] Referring to FIG. 9, a side perspective view of standoff 500
is shown in accordance with an illustrative embodiment. Referring
to FIG. 10, a bottom perspective view of standoff 500 is shown in
accordance with an illustrative embodiment. Standoff 500 may
include a head 900 and a body 902. For illustration, standoff 500
may be formed any metal or hard material such as steel, stainless
steel, zinc, ceramic, glass, copper, etc. Standoff 500 is pressed
into place, for example, using a pneumatic press.
[0040] Head 900 may include a bottom surface 1000, a side wall 904,
and a top surface 906. Side wall 904 extends between bottom surface
1000 and top surface 906. Head 900 may form a hexagon though head
900 may have other shapes in other embodiments. For example, head
900 may form another polygon, a circle, an ellipse, etc.
[0041] Body 902 may include a first cylinder wall 908, a second
cylinder wall 910, a wall outer surface 912, an inner aperture wall
914, and a score 916. In the illustrative embodiment, body 902 is
generally cylindrical though body 902 may have other shapes in
other embodiments. For example, body 902 may form a polygon, an
ellipse, etc. First cylinder wall 908 extends from and is generally
perpendicular to top surface 906. Second cylinder wall 910 extends
from first cylinder wall 908. First cylinder wall 908 and second
cylinder wall 910 form a cylinder with an inner aperture wall 914
though first cylinder wall 908 has a smaller circumference than
second cylinder wall 910. As a result, a shelf (not shown) provides
a transition between first cylinder wall 908 and second cylinder
wall 910.
[0042] Inner aperture wall 914 also extends through head 900 to
allow insertion of screw 502 through standoff 500. Outer surface
912 extends between an outer surface of second cylinder wall 910
and inner aperture wall 914. A score 916 is formed as a u-shaped
valley in the outer surface of second cylinder wall 910.
[0043] Referring to FIG. 11, a front view of motor mount 402 is
shown in accordance with an illustrative embodiment. Motor mount
402 is shown transparent so that standoff 500 extending through
motor mount 402 is visible. Referring to FIG. 12, a zoomed front
perspective view showing the motor mounting portion of convection
fan 100 is shown in accordance with an illustrative embodiment.
Referring to FIG. 13, a bottom perspective view of motor mount 402
is shown including fan fastener 308 in accordance with an
illustrative embodiment. Referring to FIG. 14, a front perspective
view of fasteners of bottom flank 400 and motor mount 402 are shown
in accordance with an illustrative embodiment.
[0044] Head 900 is pressed into bottom plate 604 of motor mount 402
until the shelf formed between first cylinder wall 908 and second
cylinder wall 910 abuts a top surface of bottom plate 604 of motor
mount 402. Fastener shaft 1408 of screw 502 is inserted within
inner aperture wall 914 until screw head 1410 of screw 502 abuts a
top surface of top plate 600 of bottom flank 400.
[0045] The plurality of plate fasteners 308 are the only components
that contact both bottom plate 604 and top plate 600. Top plate
600, bottom vortex fastener 214, bottom screw 216, and the
plurality of plurality of guiding plate fasteners 506 are exposed
to the potentially high temperatures attained within the enclosure
of convection oven 1500. In contrast, motor mount 402 and the
plurality of motor fasteners 504 are insulated by insulator 404
from bottom flank 400, and standoff 500 of each of the plurality of
plate fasteners 308 provide a thermal break between top plate 600
and bottom plate 604. Motor 104 is thereby protected from the high
temperatures and remains cool supporting a longer motor life and an
improved motor performance. Additionally, motor 104 may be less
expensive because it is not required to tolerate the high
temperatures attained within the enclosure of convection oven
1500.
[0046] Various types of fasteners may be used to mount the
components of convection 100 together. A fewer or a greater number
of fasteners further may be used.
[0047] The word "illustrative" is used herein to mean serving as an
example, instance, or illustration. Any aspect or design described
herein as "illustrative" is not necessarily to be construed as
preferred or advantageous over other aspects or designs. Further,
for the purposes of this disclosure and unless otherwise specified,
"a" or "an" means "one or more". Still further, using "and" or "or"
in the detailed description is intended to include "and/or" unless
specifically indicated otherwise.
[0048] The foregoing description of illustrative embodiments of the
disclosed subject matter has been presented for purposes of
illustration and of description. It is not intended to be
exhaustive or to limit the disclosed subject matter to the precise
form disclosed, and modifications and variations are possible in
light of the above teachings or may be acquired from practice of
the disclosed subject matter. The embodiments were chosen and
described in order to explain the principles of the disclosed
subject matter and as practical applications of the disclosed
subject matter to enable one skilled in the art to utilize the
disclosed subject matter in various embodiments and with various
modifications as suited to the particular use contemplated.
* * * * *