CA2410001A1 - Method of assembling an electrical heater support housing - Google Patents
Method of assembling an electrical heater support housing Download PDFInfo
- Publication number
- CA2410001A1 CA2410001A1 CA002410001A CA2410001A CA2410001A1 CA 2410001 A1 CA2410001 A1 CA 2410001A1 CA 002410001 A CA002410001 A CA 002410001A CA 2410001 A CA2410001 A CA 2410001A CA 2410001 A1 CA2410001 A1 CA 2410001A1
- Authority
- CA
- Canada
- Prior art keywords
- leaves
- elongated member
- peripheral end
- electrical
- outer peripheral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
- D06F58/26—Heating arrangements, e.g. gas heating equipment
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
- H05B3/66—Supports or mountings for heaters on or in the wall or roof
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
A method of assembling an electrical heater support housing comprises the steps of forming an elongated member having a linear series of spaced apart and interconnected leaves where leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves has opposing tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof. The leaves each have notches and tab members. The preferred method comprises stretching two electrical heating coils beside each other and then mounting insulators onto the coils. Next, the elongated member is moved downwardly so that the notches of the leaves pass over the insulators. Next, the tab members are bent about the insulators to mount the insulators and heating coil elements to the elongated member. The elongated member is then folded to bring adjacent leaves into engagement with each other.
Description
METHOD OF ASSEMBLING AN ELECTRICAL HEATER SUPPORT
HOUSING
FIELD OF THE INVENTION
This present invention relates to a method of assembling an electrical heater housing support wall for supporting electrical resistant insulators carrying heating elements. In particular the present invention relates to the assembly of an electrical heater housing support wall suitable for use in a heater assembly of a clothes dryer.
BACKGROUND OF THE INVENTION
Electric clothes dryers typically have a rotating drum which tumbles clothing as warm air passes through the drum. The drum has a wall having a plurality of perforations through which air may enter the drum. The air entering the drum through the rear wall is heated in a heater assembly located behind the rear wall. In my U.S. patent 4,994,654 issued February 19, 1991 there is illustrated a heater housing onto which are mounted electrical coils through insulated brackets. Air is drawn in through the air gap between the heater housing and the rear wall of the dryer drum. The air is drawn over the electrical heating coils and in through the apertures in the rear wall of the dryer drum. As a result, air entering the dryer drum is heated for drying the clothes. The heater housing is shown to be circular in shape and the insulating supports are mounted directly to the rear wall of the diffuser dryer heater housing.
The problem with this heater housing resides in the assembly of the heating coils onto the insulating supports. This assembly process involves mounting the electrical insulators onto the housing in a circular pattern and then stretching the heater coil in a circular pattern around the drum for mounting onto the insulators. This latter step of mounting the heater coil is time consuming and difficult to insure even distribution of the heater coil turns between the insulators because the coil must be stretched in a circular pattern around the heater housing or in a piecemeal manner between each of insulators.
SUMMARY OF THE INVENTION
The present invention relates to a method of assembling an electrical heater housing support wall for supporting electrical resistant insulators carrying heating elements. In particular, the present invention relates to the assembled heater housing support wall which permits for easy assembly of insulators and heating elements onto the support wall.
The method of assembling an electrical heater support housing of the present invention may comprise the steps of forming an elongated member having a linear series of spaced apart and interconnected leaves where leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with opposing tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof. The method further comprises the steps of mounting an electrical resistant insulator to each of the leaves in alignment along said elongated member and extending an electrical heating coil in a linear manner relative to the elongated metal member to mount an electrical heating coil to each of the electrical insulators. The method further comprises the step of folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
Preferably, the method of assembling an electrical heater support housing comprises the steps of forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner peripheral end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof. The next step is to extend an electrical heating coil in a linear manner onto a jig. The next step is to mount electrical resistant insulators to the coil at spaced intervals along the coil corresponding to spacing between the leaves in alignment along said elongated member. The next step is to mount the elongated member to the electrical resistant insulators with each insulator mounted to one of said leaves. The next step is to fold the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
The assembled heater housing support wall of the present invention has the advantage that during assembly of the heating elements onto the support wall, the support wall is not yet folded permitting the heating element to be evenly stretched linearly for mounting onto the insulators.
The method of assembling preferably further comprises the step of cutting at least one notch and/or, one or more, tabs from each of the leaves wherein the notch and tabs are aligned relative to each other along the elongated member and the step of mounting an electrical resistant insulator comprises mounting the insulators to each of the leaves at the notch and tabs.
Preferably the step of forming the elongated member includes forming each leaf with at least one flap extending from at least one of the tapering side walls and wherein the step of folding the elongated member includes the at least one flap fastened to an adjacent leaf.
Preferably, the method of assembling an electrical heater support further includes the step of bending the outer peripheral end portions of the elongated member at an angle relative to the leaves prior to the step of folding the elongated member.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the nature and objects of the present invention, reference may be had to the accompanying diagrammatic drawings in which:
Figure 1 is a view showing an electric clothes dryer having a rotating drum, rear end head and heater housing of the present invention;
Figure 2 is an elevation view showing heater housing;
Figure 3 is a plan view of the heater housing showing it as an elongated member prior to folding;
Figure 4 is a side view taken along lines 4-4 of Figure 3; and, Figure 5 a partial view showing an assembled heater housing with insulators and heating coils; and, Figure 6 is a perspective view showing the mounting of an insulator to the heater housing.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figures 1, 2 and 5 there is shown a clothes dryer 10 having a rotating drum 12 mounted therein. The rotating drum has an open front through which access can be gained through door 14 of the dryer 10 for the insertion and removal of clothing and other articles from the drum. The clothes dryer 10 has a rear panel 16 provided with a series or plurality of louvers 18 through which air may be drawn into the interior of the dryer 10.
The airflow is shown by arrows 20 passing through the louvers, through a series of openings 23 in the rear end head 22 of the dryer drum 12 through front ducting 24 and out through exhaust ducting 26. Motor 28 draws or rotates fan 30 to draw the air 20 through the drum 12. The motor 28 through pulley 35 and belt 33 also causes the rotation of the dryer drum 12.
A heater housing 32 is mounted by suitable bolts 34 to the rear panel 16 of the dryer 10. The heater housing 32 is adjacent the end head 22. The heater housing 32 has a rear wall 36 that is spaced from the rear end head 22. The rear end head 22 has a boss 45 and the rear wall 36 has a diameter which is greater than the boss 45. The rear wall 36 has a generally irregular annular polygonal shape (see Figure 2).
The heater housing 32 has an upstanding outer peripheral wall portion 47 that extends around the periphery of the polygonal shaped rear wall 36.
The wall portion 47 is angled approximately at 90° to the rear wall 36. The upstanding sidewalls 47 further extend towards the rear end head 22. An air gap 46 of variable size extends between the wall portion 47 and the end head 22 of the dryer drum.
Helicaily wound heater coils 48 are mounted via electrical insulators 50 to the rear wall 36 of the heater housing 32. The coils 48 are spaced from the rear walls 36 and from the end head 22 of the dryer drum. The heater coils 48 are connected to a source of electrical supply through terminals 51 (see Figure 2). When electrical energy is fed through terminals 51 to coils 48, the coils warm heating air passing over the coils and towards the openings (not shown) in the end head 22 of the dryer drum 12.
The electrical heating support wall of heater housing 32 is shown in an assembled position in Figure 2 wherein a plurality of leaves 52 are positioned in a juxtaposition relationship and folded relative to each other to provide a continuous substantially annular wall portion 36 for supporting the electrical heater coils 48 relative thereto. Each of the leaves 52 has an outer peripheral wall end portion 47, an inner peripheral end portion 54 narrower in width then the outer peripheral end portion 47. Between the inner and outer peripheral end portions 54, 47 each of the leaves 52 has opposing tapering sidewalls 56 that taper from the outer peripheral end portion 47 to the inner peripheral end portion 54. Each leaf 52 is provided with at least one flap 58 (see Figure 3) on one of its sidewalls 56 and another flap 60 on its other sidewall 56.
As shown in Figure 3, the outer peripheral wall 47 is initially flat relative to the leaves 52 and has an overturned flange 49. The wall 47 is bent upwardly about fold line 51 to its raised portion shown in Figure 2. The leaves 52 are then folded towards each other and the outer peripheral wall then folds about fold lines 62. When the leaves 52 as shown in Figure 3 are folded into the configuration shown in Figures 2 and 4, the flaps or tabs 58, 60 overlap with each other to engage the adjacent leaf 52 in overlapping and supporting relationship. It should be understood that more then one tab or flap may be provided on each leaf tapering sidewall 56. The outer rim or outer peripheral end portion 47 of each leaf 52 effectively forms rim wall portion 47 that defines an outer boundary for the heater housing 32 when the leaves 52 are folded together.
As best seen in Figure 5, each of the leaves 52 has a raised land portion 64 which has provided thereon two sets of notches 66 and tabs 68.
As shown in Figure 6, these notches 66 and tabs 68 are adapted to seat the base 72 of the insulator 50 in place relative to each leaf. Preferably, the shape of stem 70 corresponds to the shape of the stem of the insulator shown in my U.S. patent 5,935,471 issued August 10, 1999. In the preferred insulator of the present invention, the base portion 72 of the insulator 50 has two opposing feet 71 adapted to rest or abut against the surface 79 of the corresponding leaf and each foot 71 has a depending flange 73 projecting into the notch 66 of the leaf to engage the edges of the notch 66 so as to prevent lateral movement of the insulator 50 relative to the leaf. Further, at least one tab 68 of the leaf is bent over each of the feet 71 of the insulator to secure the insulator 50 to the leaf 52. The cut out stem 70 has mounted thereto the heating coils 48.
During the assembly of the present heater housing 32 an elongate member 80 as shown in Figure 3, is formed by stamping a metal blank having a series of spaced apart and interconnected leaves 52 where the leaves 52 have aligned outer peripheral end portions 47 and aligned inner peripheral end portions 54 narrower in width then the outer end portions 47. Each of the leaves 52 is formed with opposing tapering sidewalls 56 tapering from a respective outer peripheral end portion 47 to a respective inner peripheral end portion 54. Each of the leaves 52 is also formed in a stamping manner with the tabs 58 and 60 as shown. The raised land surface portions 64 of the leaf may also be formed with a press during stamping and the notches 66 and tabs 68 cut therefrom.
In accordance with one method of assembling heater 32, the electrical insulators 50 are mounted to each of the leaves 52 in alignment along the elongated member 80. The insulators 50 are inserted into the notches 66 with the tabs 68 folded about the base 72 of the insulators 50 as shown in Figure 6. Then the heating coil 48 are stretched along the elongate member 80 and inserted into the electrical insulators 50. Thereafter, the leaves 52 are folded to bring the flaps 58, 60 of adjacent leaves 52 into engagement with each other and to provide a continuos inner rim wall portion 54 as shown in Figure 2 with the tapering sidewalls 56 of the leaves juxtapositioned. In this method, the continuous outer peripheral wall portions 47 are bent upwards at a predetermined angle anytime during the process prior to the step of folding the leaves 52.
In accordance with the preferred method of assembling heater 32, two electrical heating coils 48 are stretched beside each other over a support jig (not shown) and insulators 50 have their stem portions mounted onto the coils 48 at predetermined positions along the coils 48 corresponding to the location of the notches 66 in the leaves 52 of the elongated member 80. The support coils are also supported by the support jig. The elongated member 80 is preferably bent along fold lines 51 (Figure 3) to form a depending side wall portions 47. Next, the elongated member is moved downwardly so that the notches 66 pass over the depending flange 73 and the feet 71 of base portion 72 abut against surface 79 of the leaves 52. Next, the tabs 68 are bent about the feet 71 of the insulators to mount the insulators 50 and heating coil elements 48 to the member 80. The member 80 is then raised from the support jig (not shown) and the leaves 52 are folded to bring the flaps 58, 60 of adjacent leaves 52 into engagement with each other and to provide a continuous inner rim wall portion 54 as shown in Figure 2 with the tapering sidewalls 56 of the leaves juxtapositioned.
In accordance with the present invention the folded heater housing support wall 36 and the method of forming it makes for ease of assembly. In particular, it is relatively easy to insert the heater housing coil 48 on an even distribution across the insulators 50 by simply stretching coils 48 in a elongated manner and inserting coil turns down onto the stem 70 heater insulators 50. As a result, there is no uneven distribution of the heater coil between the insulators 50. Consequently when elongated member 80 is folded into annular heater housing 32, there is no need to subsequently mount a heater coil 48 in a circular fashion thereabout because the heater coil has already been mounted relative to the leaves 52 prior to folding the leaves 52 into the annular heater housing 32.
HOUSING
FIELD OF THE INVENTION
This present invention relates to a method of assembling an electrical heater housing support wall for supporting electrical resistant insulators carrying heating elements. In particular the present invention relates to the assembly of an electrical heater housing support wall suitable for use in a heater assembly of a clothes dryer.
BACKGROUND OF THE INVENTION
Electric clothes dryers typically have a rotating drum which tumbles clothing as warm air passes through the drum. The drum has a wall having a plurality of perforations through which air may enter the drum. The air entering the drum through the rear wall is heated in a heater assembly located behind the rear wall. In my U.S. patent 4,994,654 issued February 19, 1991 there is illustrated a heater housing onto which are mounted electrical coils through insulated brackets. Air is drawn in through the air gap between the heater housing and the rear wall of the dryer drum. The air is drawn over the electrical heating coils and in through the apertures in the rear wall of the dryer drum. As a result, air entering the dryer drum is heated for drying the clothes. The heater housing is shown to be circular in shape and the insulating supports are mounted directly to the rear wall of the diffuser dryer heater housing.
The problem with this heater housing resides in the assembly of the heating coils onto the insulating supports. This assembly process involves mounting the electrical insulators onto the housing in a circular pattern and then stretching the heater coil in a circular pattern around the drum for mounting onto the insulators. This latter step of mounting the heater coil is time consuming and difficult to insure even distribution of the heater coil turns between the insulators because the coil must be stretched in a circular pattern around the heater housing or in a piecemeal manner between each of insulators.
SUMMARY OF THE INVENTION
The present invention relates to a method of assembling an electrical heater housing support wall for supporting electrical resistant insulators carrying heating elements. In particular, the present invention relates to the assembled heater housing support wall which permits for easy assembly of insulators and heating elements onto the support wall.
The method of assembling an electrical heater support housing of the present invention may comprise the steps of forming an elongated member having a linear series of spaced apart and interconnected leaves where leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with opposing tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof. The method further comprises the steps of mounting an electrical resistant insulator to each of the leaves in alignment along said elongated member and extending an electrical heating coil in a linear manner relative to the elongated metal member to mount an electrical heating coil to each of the electrical insulators. The method further comprises the step of folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
Preferably, the method of assembling an electrical heater support housing comprises the steps of forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner peripheral end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof. The next step is to extend an electrical heating coil in a linear manner onto a jig. The next step is to mount electrical resistant insulators to the coil at spaced intervals along the coil corresponding to spacing between the leaves in alignment along said elongated member. The next step is to mount the elongated member to the electrical resistant insulators with each insulator mounted to one of said leaves. The next step is to fold the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
The assembled heater housing support wall of the present invention has the advantage that during assembly of the heating elements onto the support wall, the support wall is not yet folded permitting the heating element to be evenly stretched linearly for mounting onto the insulators.
The method of assembling preferably further comprises the step of cutting at least one notch and/or, one or more, tabs from each of the leaves wherein the notch and tabs are aligned relative to each other along the elongated member and the step of mounting an electrical resistant insulator comprises mounting the insulators to each of the leaves at the notch and tabs.
Preferably the step of forming the elongated member includes forming each leaf with at least one flap extending from at least one of the tapering side walls and wherein the step of folding the elongated member includes the at least one flap fastened to an adjacent leaf.
Preferably, the method of assembling an electrical heater support further includes the step of bending the outer peripheral end portions of the elongated member at an angle relative to the leaves prior to the step of folding the elongated member.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the nature and objects of the present invention, reference may be had to the accompanying diagrammatic drawings in which:
Figure 1 is a view showing an electric clothes dryer having a rotating drum, rear end head and heater housing of the present invention;
Figure 2 is an elevation view showing heater housing;
Figure 3 is a plan view of the heater housing showing it as an elongated member prior to folding;
Figure 4 is a side view taken along lines 4-4 of Figure 3; and, Figure 5 a partial view showing an assembled heater housing with insulators and heating coils; and, Figure 6 is a perspective view showing the mounting of an insulator to the heater housing.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to Figures 1, 2 and 5 there is shown a clothes dryer 10 having a rotating drum 12 mounted therein. The rotating drum has an open front through which access can be gained through door 14 of the dryer 10 for the insertion and removal of clothing and other articles from the drum. The clothes dryer 10 has a rear panel 16 provided with a series or plurality of louvers 18 through which air may be drawn into the interior of the dryer 10.
The airflow is shown by arrows 20 passing through the louvers, through a series of openings 23 in the rear end head 22 of the dryer drum 12 through front ducting 24 and out through exhaust ducting 26. Motor 28 draws or rotates fan 30 to draw the air 20 through the drum 12. The motor 28 through pulley 35 and belt 33 also causes the rotation of the dryer drum 12.
A heater housing 32 is mounted by suitable bolts 34 to the rear panel 16 of the dryer 10. The heater housing 32 is adjacent the end head 22. The heater housing 32 has a rear wall 36 that is spaced from the rear end head 22. The rear end head 22 has a boss 45 and the rear wall 36 has a diameter which is greater than the boss 45. The rear wall 36 has a generally irregular annular polygonal shape (see Figure 2).
The heater housing 32 has an upstanding outer peripheral wall portion 47 that extends around the periphery of the polygonal shaped rear wall 36.
The wall portion 47 is angled approximately at 90° to the rear wall 36. The upstanding sidewalls 47 further extend towards the rear end head 22. An air gap 46 of variable size extends between the wall portion 47 and the end head 22 of the dryer drum.
Helicaily wound heater coils 48 are mounted via electrical insulators 50 to the rear wall 36 of the heater housing 32. The coils 48 are spaced from the rear walls 36 and from the end head 22 of the dryer drum. The heater coils 48 are connected to a source of electrical supply through terminals 51 (see Figure 2). When electrical energy is fed through terminals 51 to coils 48, the coils warm heating air passing over the coils and towards the openings (not shown) in the end head 22 of the dryer drum 12.
The electrical heating support wall of heater housing 32 is shown in an assembled position in Figure 2 wherein a plurality of leaves 52 are positioned in a juxtaposition relationship and folded relative to each other to provide a continuous substantially annular wall portion 36 for supporting the electrical heater coils 48 relative thereto. Each of the leaves 52 has an outer peripheral wall end portion 47, an inner peripheral end portion 54 narrower in width then the outer peripheral end portion 47. Between the inner and outer peripheral end portions 54, 47 each of the leaves 52 has opposing tapering sidewalls 56 that taper from the outer peripheral end portion 47 to the inner peripheral end portion 54. Each leaf 52 is provided with at least one flap 58 (see Figure 3) on one of its sidewalls 56 and another flap 60 on its other sidewall 56.
As shown in Figure 3, the outer peripheral wall 47 is initially flat relative to the leaves 52 and has an overturned flange 49. The wall 47 is bent upwardly about fold line 51 to its raised portion shown in Figure 2. The leaves 52 are then folded towards each other and the outer peripheral wall then folds about fold lines 62. When the leaves 52 as shown in Figure 3 are folded into the configuration shown in Figures 2 and 4, the flaps or tabs 58, 60 overlap with each other to engage the adjacent leaf 52 in overlapping and supporting relationship. It should be understood that more then one tab or flap may be provided on each leaf tapering sidewall 56. The outer rim or outer peripheral end portion 47 of each leaf 52 effectively forms rim wall portion 47 that defines an outer boundary for the heater housing 32 when the leaves 52 are folded together.
As best seen in Figure 5, each of the leaves 52 has a raised land portion 64 which has provided thereon two sets of notches 66 and tabs 68.
As shown in Figure 6, these notches 66 and tabs 68 are adapted to seat the base 72 of the insulator 50 in place relative to each leaf. Preferably, the shape of stem 70 corresponds to the shape of the stem of the insulator shown in my U.S. patent 5,935,471 issued August 10, 1999. In the preferred insulator of the present invention, the base portion 72 of the insulator 50 has two opposing feet 71 adapted to rest or abut against the surface 79 of the corresponding leaf and each foot 71 has a depending flange 73 projecting into the notch 66 of the leaf to engage the edges of the notch 66 so as to prevent lateral movement of the insulator 50 relative to the leaf. Further, at least one tab 68 of the leaf is bent over each of the feet 71 of the insulator to secure the insulator 50 to the leaf 52. The cut out stem 70 has mounted thereto the heating coils 48.
During the assembly of the present heater housing 32 an elongate member 80 as shown in Figure 3, is formed by stamping a metal blank having a series of spaced apart and interconnected leaves 52 where the leaves 52 have aligned outer peripheral end portions 47 and aligned inner peripheral end portions 54 narrower in width then the outer end portions 47. Each of the leaves 52 is formed with opposing tapering sidewalls 56 tapering from a respective outer peripheral end portion 47 to a respective inner peripheral end portion 54. Each of the leaves 52 is also formed in a stamping manner with the tabs 58 and 60 as shown. The raised land surface portions 64 of the leaf may also be formed with a press during stamping and the notches 66 and tabs 68 cut therefrom.
In accordance with one method of assembling heater 32, the electrical insulators 50 are mounted to each of the leaves 52 in alignment along the elongated member 80. The insulators 50 are inserted into the notches 66 with the tabs 68 folded about the base 72 of the insulators 50 as shown in Figure 6. Then the heating coil 48 are stretched along the elongate member 80 and inserted into the electrical insulators 50. Thereafter, the leaves 52 are folded to bring the flaps 58, 60 of adjacent leaves 52 into engagement with each other and to provide a continuos inner rim wall portion 54 as shown in Figure 2 with the tapering sidewalls 56 of the leaves juxtapositioned. In this method, the continuous outer peripheral wall portions 47 are bent upwards at a predetermined angle anytime during the process prior to the step of folding the leaves 52.
In accordance with the preferred method of assembling heater 32, two electrical heating coils 48 are stretched beside each other over a support jig (not shown) and insulators 50 have their stem portions mounted onto the coils 48 at predetermined positions along the coils 48 corresponding to the location of the notches 66 in the leaves 52 of the elongated member 80. The support coils are also supported by the support jig. The elongated member 80 is preferably bent along fold lines 51 (Figure 3) to form a depending side wall portions 47. Next, the elongated member is moved downwardly so that the notches 66 pass over the depending flange 73 and the feet 71 of base portion 72 abut against surface 79 of the leaves 52. Next, the tabs 68 are bent about the feet 71 of the insulators to mount the insulators 50 and heating coil elements 48 to the member 80. The member 80 is then raised from the support jig (not shown) and the leaves 52 are folded to bring the flaps 58, 60 of adjacent leaves 52 into engagement with each other and to provide a continuous inner rim wall portion 54 as shown in Figure 2 with the tapering sidewalls 56 of the leaves juxtapositioned.
In accordance with the present invention the folded heater housing support wall 36 and the method of forming it makes for ease of assembly. In particular, it is relatively easy to insert the heater housing coil 48 on an even distribution across the insulators 50 by simply stretching coils 48 in a elongated manner and inserting coil turns down onto the stem 70 heater insulators 50. As a result, there is no uneven distribution of the heater coil between the insulators 50. Consequently when elongated member 80 is folded into annular heater housing 32, there is no need to subsequently mount a heater coil 48 in a circular fashion thereabout because the heater coil has already been mounted relative to the leaves 52 prior to folding the leaves 52 into the annular heater housing 32.
Claims (8)
1. A method of assembling an electrical heater support housing comprising the steps of:
forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof;
mounting an electrical resistant insulator to each of the leaves in alignment along said elongated member;
extending an electrical heating coil in a linear manner relative to the elongated metal member to mount an electrical heating coil to each of the electrical insulators; and, folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof;
mounting an electrical resistant insulator to each of the leaves in alignment along said elongated member;
extending an electrical heating coil in a linear manner relative to the elongated metal member to mount an electrical heating coil to each of the electrical insulators; and, folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
2. The method of assembling an electrical heater support housing of claim 1 further comprising the step of cutting at least one of a notch and one or more tabs from each of the leaves wherein said at least on notch and one or more tabs are aligned relative to each other along the elongated member and the step of mounting an electrical resistant insulator comprises mounting the insulators to each of the leaves at said at least one notch and one or more tabs.
3. The method of assembling an electrical heater support of claim 1 wherein the step of forming the elongated member includes forming each leaf with at least one flap extending from at least one of the tapering side walls and wherein the step of folding the elongated member includes the at least one flap being is fastened to an adjacent leaf.
4. The method of assembling the electrical heater support of claim 1 further comprising the step of bending the outer peripheral end portions of the elongated member at an angle relative to the leaves prior to the step of folding the elongated member.
5. A method of assembling an electrical heater support housing comprising the steps of:
forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof;
extending an electrical heating coil in a linear manner;
mounting electrical resistant insulators to the coil at spaced intervals along the coil corresponding to spacing between the leaves in alignment along said elongated member;
mounting the elongated member to the electrical resistant insulators with each insulator mounted to one of said leaves; and, folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
forming an elongated member having a linear series of spaced apart and interconnected leaves where the leaves have aligned outer peripheral end portions and aligned inner periphery end portions narrower in width than said outer peripheral end portions, and each of the leaves formed with tapering side walls tapering from a respective outer peripheral end portion thereof to a respective inner peripheral end portion thereof;
extending an electrical heating coil in a linear manner;
mounting electrical resistant insulators to the coil at spaced intervals along the coil corresponding to spacing between the leaves in alignment along said elongated member;
mounting the elongated member to the electrical resistant insulators with each insulator mounted to one of said leaves; and, folding the elongated member to juxtaposition the tapering side walls of adjacent leaves and form a continuous substantially annular wall portion.
6. The method of assembling an electrical heater support housing of claim 5 further comprising the step of cutting at least one of a notch and one or more tabs from each of the leaves wherein said at least one notch and one or more tabs are aligned relative to each other along the elongated member and the step of mounting an the elongated member to the electrical resistant insulators comprises mounting the insulators to each of the leaves at said at least one notch and one or more tabs.
7. The method of assembling an electrical heater support of claim wherein the step of forming the elongated member includes forming each leaf with at least one flap extending from at least one of the tapering side walls and wherein the step of folding the elongated member includes the at least one flap being fastened to an adjacent leaf.
8. The method of assembling the electrical heater support of claim further comprising the step of bending the outer peripheral end portions of the elongated member at an angle relative to the leaves prior to the step of folding the elongated member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002410001A CA2410001A1 (en) | 2002-10-24 | 2002-10-24 | Method of assembling an electrical heater support housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002410001A CA2410001A1 (en) | 2002-10-24 | 2002-10-24 | Method of assembling an electrical heater support housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2410001A1 true CA2410001A1 (en) | 2004-04-24 |
Family
ID=32399814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002410001A Abandoned CA2410001A1 (en) | 2002-10-24 | 2002-10-24 | Method of assembling an electrical heater support housing |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2410001A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1028057C2 (en) * | 2005-01-18 | 2006-07-19 | Tempress Systems | Device for holding heating wires in place in a horizontal oven. |
| US8629377B2 (en) | 2007-07-20 | 2014-01-14 | Mabe Canada Inc. | Heater assembly for clothes dryer |
| US11174587B2 (en) | 2019-05-02 | 2021-11-16 | Haier Us Appliance Solutions, Inc. | Heater assembly for an appliance having one or more housing-securing features |
-
2002
- 2002-10-24 CA CA002410001A patent/CA2410001A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1028057C2 (en) * | 2005-01-18 | 2006-07-19 | Tempress Systems | Device for holding heating wires in place in a horizontal oven. |
| US8629377B2 (en) | 2007-07-20 | 2014-01-14 | Mabe Canada Inc. | Heater assembly for clothes dryer |
| US11174587B2 (en) | 2019-05-02 | 2021-11-16 | Haier Us Appliance Solutions, Inc. | Heater assembly for an appliance having one or more housing-securing features |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8629377B2 (en) | Heater assembly for clothes dryer | |
| CA2184024A1 (en) | Motor mounted to blower housing | |
| US4700495A (en) | Heater assembly and mounting arrangement for a dryer | |
| US7353684B2 (en) | Method and apparatus of manufacturing drum | |
| CA2409537C (en) | Electrical heater housing support wall | |
| US20060107548A1 (en) | Ambient air clothes dryer | |
| CA2410001A1 (en) | Method of assembling an electrical heater support housing | |
| US6108940A (en) | Heater housing for an electric clothes dryer | |
| CA1293762C (en) | Heater coil mounting for a dryer | |
| KR20040012004A (en) | structure for assembling top cover assembly in clothes dryer | |
| EP1220573B1 (en) | Structure of ventilation motor assembly in microwave oven | |
| US6002116A (en) | Heater coil mounting arrangement | |
| US3790751A (en) | Heater assembly for dryer | |
| US6082022A (en) | Clothes dryer drum rear end head | |
| US7596884B2 (en) | Clothing dryer | |
| CN110215083B (en) | Device for ventilating a fabric for making pocketed springs and method for making strings of pocketed springs | |
| US4753018A (en) | Multivent system for dryer exhaust | |
| US3799387A (en) | Electric heating unit for clothes dryers | |
| CA2273473C (en) | Heater housing for an electric clothes dryer | |
| US4730377A (en) | Method for making a duct heater | |
| KR20030096541A (en) | Cooking rack for microwave oven, and microwave oven having the same | |
| CA2226048C (en) | Heater coil support and mounting bracket | |
| CN209767954U (en) | Drying machine | |
| CN106451922A (en) | Motor assembly for cooking appliance and oven with motor assembly | |
| KR101122068B1 (en) | Structure for power connecting part in clothes dryer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |