JP2010078314A - Electric heating element conversion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein a cooker using fossil fuel gradually becomes undesirable due to the influences of fossil fuel on environment, and shift to alternative fuel is difficult even if desired. <P>SOLUTION: This electric heating element conversion device for a fossil fuel cooker comprises a stand 14, and at least one coil-shaped electric heating element 12 supported by the stand 14. The owner of the existing fossil fuel cooker converts the cooker into electric driven one. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric heating element converter for a fossil fuel cooker.

  Many households have fossil fuel cookers such as cast iron cookers, such as AGA or Rayburn RTM. A fossil fuel cooker may generally have 2 to 4 furnaces. A two-furnace type cooker generally has three doors, and a burner, a roasting furnace, and a boiling furnace are provided behind the door. The three-furnace type cooker generally has a baking furnace, and the four-furnace type cooker can further have a heating furnace and a heating plate on the upper surface. All cookers generally have one or two heating plates, one for boil and one for stew.

  Fossil fuels used in this type of cooker are generally kerosene, diesel fuel, natural gas, propane gas, and solid fuels such as coal and wood.

  In terms of weekly fuel consumption, the consumption of 40 liters of kerosene or diesel fuel, 60 liters of propane gas, or 425 kWh of natural gas is not impossible. The cost of fossil fuels continues to rise and the environmental impact of using such fossil fuels makes this type of cooker increasingly less desirable and difficult to pass even if you want to switch to alternative fuels It has become.

  The present invention seeks to provide a solution that allows an owner of an existing fossil fuel cooker to convert such a cooker into an electric drive.

  According to the first aspect of the present invention, there is provided an electric heating element conversion device for a fossil fuel cooker having a stand and at least one electric heating element supported in a coil shape on the stand.

  Preferred and / or optional features of the first aspect of the invention are described in claims 2-18.

  According to a second aspect of the present invention, there is provided a fossil fuel cooker converted for electric heating, having the electric heating element converter according to the first aspect of the present invention.

It is a front view from one side of an electric heating element conversion device concerning the 1st mode of the present invention. It is a front view from another side of an electric heating element converter. It is a top view of an electric heating element converter.

  Hereinafter, the present invention will be described in more detail by way of example only with reference to the accompanying drawings.

  Referring to the drawings, there is shown an electric heating element conversion device 10 having one elongated flexible electric heating element 12 and a stand 14. The stand 14 is made of a heat-resistant material and is ceramic in this example. The stand 14 has two intersecting flat leaves 16 that have the exact same or substantially the same outer dimensions. Each leaf 16 has a center line C and defines an axis of symmetry along the longitudinal length of the leaf 16. A slot 20 is formed from the lower end 22 of the first leaf 16 of the leaf 16 to the middle of the center line C, and another slot 24 extends from the upper end of the second leaf 16 of the leaf 16 to the middle of the center line C. Is formed. For this reason, the two leaves 16 can be slidably engaged with each other by the individual slots 20 and 24 so that the leaves 16 extend at right angles to each other. For this reason, the lateral dimension of the stand 14 is equal over the length of the stand 14 in the longitudinal direction.

  Each leaf 16 also has two legs 28 provided by a notch 22 at the lower end of the leaf 16, thereby saving material and reducing the weight and reducing the cost while maintaining stability. And air movement for heat transfer is improved.

  Each leaf 16 of the stand 14 is formed with a plurality of holes 30, preferably circular through holes. In the present embodiment, each wing 32 of each leaf 16 has two rows of holes 30, and the rows are separated from each other in the lateral direction of the stand 14. Each row extends parallel to or substantially parallel to the center line C of the leaf 16, and the holes 30 are spaced apart in the vertical direction of the stand 14. The holes 30 in the innermost row 34 of each wing 32 are provided so as to be shifted from the holes 30 in the outermost row 36 adjacent to each wing 32. The innermost holes 30 are provided so as to be arranged between the holes 30 in the outermost row 36. Each of the innermost holes 30 of one wing 32 of the leaf 16 is flush with the outermost hole 30 of the wing 32 on the opposite side of the leaf 16 (horizontal plane in use).

  In a state where the two leaves 16 of the stand 14 are connected to each other by the individual slots 20 and 24 to form a substantially X-shaped transverse section, the long flexible electric heating element 12 is formed. , And passed through the hole 30 so as to be supported by the stand 14. First, one tail 38 of the heating element 12 is passed through the bottom hole 40 in the outermost row 36 of the holes in the leaf 16, and then one by one in the next hole 30 in the adjacent wing 32. And is wound around the stand 14. As best shown in FIG. 2, when the heating element 12 reaches the uppermost hole 42 in the outermost row 36, the winding direction of the heating element 12 is reversed, and the heating element 12 is immediately adjacent to the inner side. It passes through the upper hole 44 and then passes through the innermost row 34 of the hole 30 of the leaf 16 one by one and is wound around the stand 14 downward.

  In this way, the heating element 12 is wound around the stand 14 in one direction, and then wound around the stand 14 in a second direction opposite to the first direction. Each turn 46 of each coil 48 is spaced from the adjacent turn 46 by the distance of the hole 30.

  The heating part 50 of the heating element 12 extending from the tail 38 is itself coiled. Therefore, the heating unit 50 is wound around the vertical axis of the heating element 12, and the length of the heating unit 50 in the vertical direction is formed in the two coils 48 by the stand 14. Each turn 46 of an individual coil 48 has the same or substantially the same radius, and the radius of the inner coil 52 is smaller than the radius of the outer coil 54.

  The tail 38 of the heating element 12 is held adjacent to the stand 14 by the inner hole and the outer hole 30. Thereafter, the stand 14 having the heating element 12 is arranged at an appropriate position of the cooking device. The tail 38 can then be easily connected to a power source such as the main power source of the house. The length of the tail 38 can be set to any length as required so that connection to a power source is possible.

  It has been found that when the heating element is formed in two coils supported on a stand, better heating can be obtained than when only one coil is used.

  Also, the stand is formed from a ceramic material, which is advantageous because the stand functions as a heat storage and promotes good heat transfer to the surrounding air in the oven space of the cooker.

  Preferably, the electrical heating element converter is provided as a kit of parts so that it can be assembled and installed in the field.

  The heating part of the heating element is wound around the longitudinal axis of the heating element and thus extends in a direction transverse to the longitudinal axis, but even if the heating part is non-coiled, it is parallel to the longitudinal axis. It may extend.

  Although one heating element is shown above, a plurality of heating elements may be provided on one stand using openings or holes. In this case, each heating element may have the two coils supported on the stand, or each heating element may be formed as one coil on the stand.

  The coil of the heating element formed on the stand usually has a uniform spiral shape with the same turn radius. However, one coil or each coil may be helical, so that the opening or hole in the leaf of the stand may be arranged to correspond thereto.

  Thus, it is possible to provide an electrical heating element converter that allows a fossil fuel cooker to be converted for electrical heating in a simple and cost effective manner. Since this cooker can leave the original heating means while adding an electric heating element conversion device, it operates only with electricity, or operates with two or more types of fuel. Can be converted to The electrical heating element converter can be adapted to new and old cookers and can be retrofitted to already installed cookers.

  Since the device is electric, there is no need for a flue for conversion, which saves costs and does not emit environmentally harmful exhaust after conversion. Because electricity is less expensive than fossil fuels, the converted price is lower for the customer and, unlike oil, no storage facility is required. The maintenance and maintenance of the apparatus is less, and thus the operating cost can be reduced. Electricity can also be supplied directly from the user by renewable resources such as solar power generation or wind power generation. In addition, the use of electricity can also reduce transportation costs for oil transportation.

  The embodiments described above are described by way of example only, and various other modifications will be apparent to those skilled in the art that are within the scope of the invention as defined by the appended claims.

Claims (19)

  An electric heating element converter for a fossil fuel cooker, comprising: a stand; and at least one electric heating element supported on the stand in a coil shape.   The heating element has a heating part and a tail part, and the heating part is formed as a coil wound around the longitudinal axis of the heating element, and the length of the heating part in the vertical direction is wound around the stand. The electric heating element converter according to claim 1, wherein the electric heating element converter is turned and supported by the stand.   The electric heating element converter according to claim 1 or 2, wherein adjacent turns of the at least one electric heating element are maintained in a separated relationship by the stand.   The electric heating element converter according to any one of claims 1 to 3, wherein two coils supported by the stand are included in a longitudinal length of the at least one electric heating element.   The first coil of the coil has a constant or substantially constant radius, and the second coil of the coil has a constant or substantially constant radius that is different from the diameter of the first coil. The electric heating element converter according to claim 4.   The electric heating element converter according to claim 4 or 5, wherein the first coil of the coil is provided in the second coil of the coil.   The electric heating element converter according to any one of claims 1 to 6, further comprising a second electric heating element formed as a coil and supported by the stand.   The electric heating element converter according to any one of claims 1 to 7, wherein the electric heating element or each of the electric heating elements has flexibility.   The electric heating element converter according to claim 1, wherein the stand has two intersecting leaves.   The electric heating element converter according to claim 9, wherein the leaves intersect at right angles with each other at a center line of the leaves.   The electric heating element conversion device according to claim 9 or 10, wherein each leaf has a slot formed partway along a center line of the slot for receiving the other leaf as a sliding fit.   12. The electric heating element conversion device according to claim 9, wherein each leaf has a plurality of spaced holes for receiving the electric heating element or each electric heating element.   The electric heating element converter according to claim 12, wherein the holes are spaced apart in the longitudinal direction of the leaf.   The electric heating element converter according to claim 12 or 13, wherein the holes are spaced apart in a lateral direction of the leaf.   The electric heating element converter according to any one of claims 1 to 14, wherein a length of the stand in the horizontal direction is equal over a length of the stand in the vertical direction.   The electric heating element converter according to any one of claims 1 to 15, wherein the stand is made of ceramic.   The electric heating element converter according to any one of claims 1 to 16, wherein the stand has a plurality of legs.   The electric heating element converter according to any one of claims 1 to 17, which has a shape of a kit of parts.   A fossil fuel cooker converted for electric heating, comprising the electric heating element converter according to any one of claims 1 to 18.

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