Electric sauna stove

The electric sauna heater addresses the challenge of using sauna stoves outside facilities by providing a safe and portable solution using electricity to heat sauna stones.

JP2026005418APending Publication Date: 2026-01-16VANWAVES CO LTD
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Patent Information

Application Number
JP2024103731
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-06-27
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

Existing sauna stoves are difficult to use outside of facilities and pose safety concerns due to fuel combustion.

Method used

An electric sauna heater with a heating unit, outer cylindrical member, support base, and control member that heats sauna stones using electricity, allowing for easy and safe sauna use.

Benefits of technology

Enables easy and safe sauna use anywhere, reducing safety risks associated with fuel combustion and enabling portable sauna setups.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide an electric stove for sauna capable of easily and safely using a sauna.SOLUTION: An electric stove 1 for sauna includes a heating part 2 having an inner cylinder member 21 for storing water W and an outer cylinder member 22 for forming a sauna stone storage space C for installing a sauna stone S around the inner cylinder member, a support base part 3 for supporting the heating part and storing a control member 4, and a heater 5 connected to the control member and heating the sauna stone stored in the sauna stone storage space of the outer cylinder member.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to an electric sauna heater. [Background technology]

[0002] A sauna is a steam bath equipped with a combustion furnace. Fuel is burned in the furnace to heat the stones placed on the furnace to a high temperature, and water is poured onto the stones to generate steam. This steam fills the sauna room, encouraging users to sweat, and has become extremely popular in recent years.

[0003] A sauna generally comprises a bathroom and a sauna stove installed in the bathroom. Sauna stoves are described in, for example, Non-Patent Document 1 below. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] https: / / onsen.community2.fmworld.net / articles / 12084 / Summary of the Invention [Problem to be solved by the invention]

[0005] However, such sauna stoves are generally installed in the building, which poses a problem in that it is difficult to use the sauna unless one goes to the facility.

[0006] Furthermore, sauna stoves generally burn fuel, and safety must be taken into consideration when using them in a small room.

[0007] In view of the above, an object of the present invention is to provide an electric heater for a sauna that allows for easy and safe use of the sauna. [Means for solving the problem]

[0008] An electric sauna stove according to one aspect of the present invention, which solves the above-mentioned problems, comprises a heating unit having an inner cylindrical member for containing water and an outer cylindrical member that forms a sauna stone storage space for placing sauna stones around the inner cylindrical member, a support base that supports the heating unit and stores a control member, and a heater that is connected to the control member and heats the sauna stones stored in the sauna stone storage space of the outer cylindrical member.

[0009] In addition, although not limited to this aspect, it is preferable that the outer cylindrical member has a plurality of through holes formed therein.

[0010] In addition, in this respect, although not limited thereto, it is preferable that the control member includes a power switch, and further includes at least one of a timer control switch and an output control switch.

[0011] In addition, in this respect, although not limited thereto, it is preferable that the cross section of the support base portion is smaller than the bottom surface of the outer cylindrical member.

[0012] In addition, in this respect, although not limited thereto, it is preferable to provide a lid portion that covers the upper surface of the inner cylinder.

[0013] Also, from this perspective, although not limited thereto, it is preferable that the heater has a flat comb-like shape and that multiple heaters are installed in the sauna stone storage space. [Effects of the Invention]

[0014] As described above, the present invention can provide an electric sauna heater and sauna set that allow sauna use to be performed easily and safely. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a diagram showing the outline of the appearance of an electric sauna heater according to an embodiment of the present invention; [Figure 2]1 is a schematic cross-sectional view of an electric sauna heater according to an embodiment of the present invention. [Figure 3] This is a diagram showing the outline of the appearance of the electric sauna stove of this embodiment when sauna stones are placed inside. [Figure 4] 1 is an image diagram of a case in which a lid portion is provided on the inner cylindrical member of the electric sauna stove according to this embodiment. [Figure 5] 1 is a diagram showing an outline of a heater of an electric sauna stove according to an embodiment of the present invention. [Figure 6] 1 is a diagram showing an outline of a tent according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be embodied in many different forms, and the specific examples described in the following embodiments and examples can be appropriately modified and adjusted, and the present invention is not limited to these.

[0017] Fig. 1 is a diagram showing the outline of the appearance of an electric stove for saunas (hereinafter referred to as "the stove") 1 according to this embodiment, and Fig. 2 is a diagram showing an outline of the cross section of the stove 1. Fig. 3 is a diagram showing the outline of the appearance of the stove 1 when sauna stones S are placed inside.

[0018] As shown in this figure, the stove 1 comprises a heating section 2 having an inner tube member 21 that contains water W and an outer tube member 22 that forms a sauna stone storage space C for placing sauna stones S around the inner tube member 21, a support base section 3 that supports the heating section 2 and stores a control member 4, and a heater 5 that is connected to the control member 4 and heats the sauna stones S stored in the sauna stone storage space C of the outer tube member 22.

[0019] With the above-described configuration, the present stove 1 can provide an electric sauna stove and sauna set that allows for easy and safe sauna use.

[0020] First, the stove 1 has a heating section 2 that forms a space for heating sauna stones. More specifically, the heating section 2 has an inner tubular member 21 and an outer tubular member 22, as described above.

[0021] As described above, the inner cylindrical member 21 in the heating section 2 of the stove 1 is a member for containing water W. The inner cylindrical member 21 is preferably a tubular member having a cavity for containing water W, and its cross-sectional shape is preferably approximately circular or approximately elliptical. However, it may also be polygonal, such as triangular, rectangular, pentagonal, or hexagonal, or may be a so-called heart shape or other shape. Note that the term "approximately circular" means that it includes a perfect circle but allows for deformation to the extent of manufacturing tolerances, and the term "approximately elliptical" means that it includes a perfect ellipse but allows for deformation to the extent of manufacturing tolerances (the same applies hereinafter to the terms "approximately circular shape" and "approximately elliptical shape"). Furthermore, since the inner cylindrical member 21 is designed to contain water W and evaporate the water by heating, it has an open upper end and a bottom formed at its lower end.

[0022] Furthermore, although there are no limitations on the material of the inner cylinder member 21 in the heating section 2 of the stove 1, it is preferably made of metal to facilitate heat transfer. Examples of metals include, but are not limited to, metals that do not rust even when in contact with water, such as aluminum alloys and stainless steel.

[0023] In addition, from this perspective, it is preferable to provide a lid 211 that covers the top surface of the inner cylinder. By providing the lid 211, it is possible to suppress water evaporation when steam generation is undesirable or when the stove 1 is not in use. The structure of the lid 211 need only match the shape of the opening at the top end of the inner cylinder member, and this shape is not limited. The material of the lid 211 is not particularly limited, and it may be made of the same material as the inner cylinder member 21, but it may also be made of an elastic material such as rubber. The lid 211 may also have small holes formed on its top surface. Providing small holes has the advantage of suppressing and adjusting the amount of steam evaporation even when the stove 1 is in use. An image of this configuration is shown in Figure 4.

[0024] The outer tubular member 22 in the heating section 2 of this stove 1 is a member for placing sauna stones S around the inner tubular member 21, and as described above, forms the sauna stone storage space C. The cross-sectional shape of the outer tubular member 22 is not limited as long as it can store sauna stones S, but is preferably approximately circular or approximately elliptical, but may also be polygonal, such as triangular, rectangular, pentagonal, or hexagonal, or may be other shapes such as a so-called heart shape.

[0025] Furthermore, as is clear from its function, the outer cylinder member 22 has a bottom that supports the sauna stones S, while the top surface is preferably open. Having an open top surface has the advantage that the sauna stones S can be put in and taken out, and that it is easier to pour water during loyly.

[0026] Side holes Additionally, it is preferable that multiple through-holes 221 be formed on the side of the outer tube member 22. The through-holes 221 facilitate heat release, making it easier to rapidly heat the room, and also facilitate the release of steam from the holes during a loyly, thereby increasing the efficiency of the loyly. In this case, the through-holes 221 are preferably large enough to prevent the sauna stones S from spilling out. Considering the size of typical sauna stones, the maximum diameter of the holes is preferably 3 cm or less, more preferably 2 cm or less. The shape of the holes may be approximately circular or elliptical, or may be polygonal, such as triangular, rectangular, pentagonal, or hexagonal, or may be a heart or other shape. The number of holes is not particularly limited, but a balance with respect to strength is important.

[0027] Furthermore, the size of the outer tube member 22 is not limited as long as it can support the sauna stones S as described above, but for example, if the diameter or maximum width of the inner tube member 21 is 1, it is preferable that it be between 2 and 10, but is not limited to this.

[0028] Furthermore, the material of the outer casing member 22 of the heating unit 2 of the present stove 1 is preferably, but not limited to, a metal to facilitate heat transfer. Examples of metals include, but are not limited to, metals that do not rust even when in contact with water, such as aluminum alloys and stainless steel.

[0029] The stove 1 also includes a support base 3 that supports the heating unit 2 and houses the control member 4. The support base 3 separates the heating unit 2 from the installation surface of the stove 1, making it possible to prevent the installation surface from becoming overheated.

[0030] More specifically, the support base 3 of the stove 1 preferably has a housing 31 and a plurality of legs 32 that support the housing 31. As described above, the housing 31 is an outer shell for housing the control member 4, and the plurality of legs 32 are members for raising the housing 31. There is no limitation on the number of legs 32, but it is preferable that there be three or more, and more preferably four.

[0031] Furthermore, in this stove 1, although not limited to this, it is preferable that the cross section of the support base 3, more specifically the cross section of the housing 31, is smaller than the bottom surface of the outer tubular member 22. This range has the advantage that the heating unit 2 can be made large while the overall device can be made smaller. Another advantage is that the step between the heating unit 2 and the support base 3 provides a hook when lifting, making it easier to carry.

[0032] The stove 1 also has a control member 4. The control member 4 controls the current supplied to the heater 5 to heat the heater 5. Although not limited to this, the control member 4 is preferably a printed circuit board on which electronic components such as IC chips are arranged.

[0033] The control member 4 of the stove 1 is preferably equipped with a power switch 41 and at least one of a timer control switch 42 and an output control switch 43. The power switch 41 allows the power to be turned on and off, the timer control switch 42 turns the power off after a certain time has elapsed, or turns the power on after a certain time has elapsed, and the output control switch 43 adjusts the output, i.e., the output from the heater 5, thereby enabling temperature adjustment. These switches are preferably, but not limited to, installed on the surface of the support base 3.

[0034] The stove 1 also has a heater 5 that heats the sauna stones S housed in the sauna stone housing space C of the outer tubular member 22 in the heating section 2. By heating the heater 5, the sauna stones S are heated, and as a result, it is possible to heat the space in which the stove 1 is installed.

[0035] The material of the heater 5 is not particularly limited, but a heating element that generates heat when an electric current is passed through it is preferable as it has a simple configuration, and specific examples include resistance heating elements such as nickel chromium wire, iron, and stainless steel.

[0036] Furthermore, in this stove 1, it is preferable that the heaters 5 have a flat comb-like shape and that multiple heaters are provided in the sauna stone storage space C. By providing the heaters 5 with this shape, the heaters 5 do not obstruct the insertion of sauna stones S when installed in the sauna stone storage space C of the heating unit 2, and they also surround the inner tubular member 21, allowing for efficient heating. In this case, it is also preferable that multiple heaters 5 are provided. This makes it possible to cover the inner tubular member 21 more efficiently. Figure 5 shows an example of the shape and arrangement of the heaters 5, with the heating unit 2 hidden.

[0037] Furthermore, this stove 1 can be installed in a closed room, with water W stored in the inner cylindrical member 21 of the heating unit 2. By turning on the power and heating the heater 5, the sauna stones S can be heated, warming the room and creating a sauna-like effect. It is also possible to perform a loyly by pouring water onto the sauna stones S stored in the heating unit 2 of this stove 1. However, this stove 1 can also be installed in places other than indoors; for example, a folding tent can be installed to create a sauna set. Figure 6 shows an example of a tent T in which this stove 1 can be installed. In this figure, (A) shows its exterior, and (B) shows its internal structure. As shown in this figure, this stove 1 can be used as a sauna stove in a sauna.

[0038] As described above, the present invention provides an electric sauna heater and sauna set that allow for easy and safe sauna use. Furthermore, because this heater uses electricity for heating, it has the advantage of suppressing the generation of carbon dioxide caused by burning materials, significantly reducing the risk of oxygen deficiency even in small rooms. [Industrial Applicability]

[0039] The present invention has industrial applicability as an electric stove for saunas and sauna sets. [Explanation of symbols]

[0040] 1. Electric sauna heater 2...Heating part 21...Inner cylinder member 22...Outer cylinder member 221...Through hole 3...Support part 4...Control member 41...Power switch 42...Timer control switch 43...Output control switch 5...Heater W…Water S...Sauna stone C…Sauna stone storage space

Claims

1. A heating unit having an inner cylindrical member for accommodating water and an outer cylindrical member for forming a sauna stone accommodating space for placing sauna stones around the inner cylindrical member; a support base portion that supports the heating portion and accommodates a control member; An electric sauna stove comprising: a heater connected to the control member and for heating the sauna stones housed in the sauna stone housing space of the outer cylindrical member.

2. 2. The electric heater for sauna use according to claim 1, wherein the outer casing member has a plurality of through holes formed therein.

3. 2. The electric sauna heater according to claim 1, wherein the control member comprises a power switch, and further comprises at least one of a timer control switch and an output control switch.

4. 2. The electric heater for sauna use according to claim 1, wherein the cross section of the support base is smaller than the bottom surface of the outer casing member.

5. 2. The electric stove for sauna use according to claim 1, further comprising a lid for covering the upper surface of the inner cylinder.

6. 2. The electric heater for sauna according to claim 1, wherein the heater is a flat comb-shaped heater and a plurality of heaters are provided in the sauna stone receiving space.