SAUNA HEATING DEVICE

Abstract

SAUNA HEATING DEVICE A heating device (100) for a sauna comprises a housing (10) having upper, lower, front, rear, left and right panels (11, 13, 15), the upper, lower, left and right panels (11, 15) each having spaced slot members; and the bottom panel having two holes; a heating device comprising heating elements having four sides fixed in the slot members, respectively, each heating element comprising a heating layer, a first insulating layer and a second insulating layer, and two conductive strips in which the heating layer is fixed in the first insulating layer; the first insulating layer protects the heating layer; and a convection device comprising two fans in the holes, respectively, and directly under the heating elements.The front panel (13) has a display panel (131) and an on / off switch (132). Figure to be published with the abstract: Figure 1.

Description

Title of the invention: SAUNA HEATING DEVICE FIELD OF THE INVENTION

[0001] The invention relates to heating devices and more particularly to a sauna heating device having improved characteristics.

[0002] BACKGROUND OF THE INVENTION

[0003] A conventional centralized heating device is illustrated in Figures 7 to 9 and comprises a housing 1, a plurality of parallel plate-shaped heating elements 2 in the housing 1, and a temperature controller 3 electrically connected to the heating elements 2 to regulate the temperature of the heating device. The heating element 2 comprises a rectangular heating layer 4, two elongated conductive copper sheets 5 on two sides of the heating layer 4, respectively, and upper and lower insulating layers 6 surrounding the heating layer 4 and the copper sheets 5 using heat and pressure. The heating elements 2 have the advantage of efficiently transferring heat in the form of radiation and convection, thereby avoiding injury to a user's hands and increasing safety of use.

[0004] However, the heating elements 2 tend to carbonize, which results in a reduction in the useful life, because the heating layers 4 are made of graphite and the insulating layers 6 are made of fiberglass.

[0005] Improvements are therefore still necessary. Summary of the invention

[0006] The invention therefore aims to provide a sauna heating device comprising a housing having an upper panel, a lower panel, a front panel, a rear panel, a left panel and a right panel, wherein the upper panel, the lower panel, the left panel and the right panel each have a plurality of spaced slot members, and the lower panel has two holes; a heating device comprising a plurality of plate-shaped heating elements having four sides fixed in the slot members of the upper panel, the lower panel, the left panel and the right panel, respectively, such that the heating elements are equidistant in the housing, wherein each of the heating elements comprises a heating layer, a first insulating layer, two parallel conductive strips and a second insulating layer;wherein the heating layer is attached to the first insulating layer for conduction of electricity and transfer of heat; wherein the first insulating layer is configured to protect the heating layer and transfer heat such that the layer; heating element is configured to uniformly transfer heat; wherein the conductive strips are attached to two sides of the heating layer, respectively, and configured to conduct electricity; and wherein the second insulating layer is attached to the heating layer to provide thermal insulation; and a convection device comprising two fans on a lower side of the heating elements, wherein the fans are arranged in the holes of the lower panel, respectively; and wherein the fans are vertically aligned on the heating elements.

[0007] Advantageously, the front panel has a display panel and an on / off switch, wherein the display panel is configured to represent a temperature and a time, and wherein the on / off switch is configured to activate or deactivate the sauna heating device, further comprising two light bars arranged on two sides of the front panel, respectively.

[0008] Advantageously, the lower portions of the heating elements are electrically connected to a power supply which is electrically connected to the display panel.

[0009] Advantageously, the sauna heating device further comprises a remote control electrically connected to the display panel.

[0010] Advantageously, the heating layer is implemented in the form of a graphene coating and the conductive strips are made of plasma.

[0011] Advantageously, the first insulating layer is made of crystalline glass and the second insulating layer is implemented in the form of a coating having thermal insulation (preferably excellent).

[0012] Advantageously, the housing is made of wood.

[0013] The invention has the following advantages and benefits compared to the conventional technique: the heating layer of each heating element is implemented in the form of a graphene coating, and graphene is electrically conductive and has a high thermal conductivity. The heating layer is fixed on the first insulating layer which is made of crystalline glass. The heating elements are not susceptible to carbonization. Furthermore, the heating elements are placed in the housing, and the housing is made of wood. Thus, a bather is not at risk of injury by touching the housing. This increases safety during a session in the sauna. The fans are placed on the lower side of the heating elements.In response to the heating elements being energized, the heating layer of each heating element heats up to emit infrared radiation through the first insulating layer and the second insulating layer, respectively. In addition, the fans draw air out of the sauna heater through . spaces between the heating elements. This allows the temperature in the sauna to rise quickly. The heating elements have increased thermal conductivity. A bather can feel comfortable because the temperature in the sauna is maintained within a suitable range. The sauna is warm and not dry. This is different from a conventional sauna, which is excessively hot due to poor heat transfer and can cause injury if the bather touches a heat source or a component installed inside.

[0014] The above and other objectives, features and advantages of the invention will be better understood upon reading the following detailed description in conjunction with the accompanying drawings. Brief description of the drawings

[0015] [Fig-1] is a perspective view of a sauna heating device according to a preferred embodiment of the invention;

[0016] [Fig.2] is another perspective view of the sauna heating device;

[0017] [Fig.3] is an exploded view of the sauna heating device;

[0018] [Fig.4] is an exploded view of the heating element;

[0019] [Fig.5] is a longitudinal sectional view of the sauna heating device;

[0020] [Fig.6] schematically represents air flow paths of the device of sauna heater in operation;

[0021] [Fig.7] is a perspective view of a centralized sauna heating device classic;

[0022] [Fig.8] is a perspective view of the heating element of [Fig.7]; and

[0023] [Fig.9] is an exploded view of the heating element of [Fig.8]. DETAILED DESCRIPTION OF THE INVENTION

[0024] Referring to Figures 1-6, a sauna heater 100 according to a preferred embodiment of the invention comprises the following components, as described in detail below.

[0025] A housing 10 is made of wood and includes an upper panel 11, a lower panel 12, a front panel 13, a rear panel 14, a left panel 15, and a right panel 16. The upper panel 11, the lower panel 12, the left panel 15, and the right panel 16 each have a plurality of spaced slot members 17. The lower panel 12 has two holes 121. The front panel 13 has a display panel 131 and an on / off switch 132, both located on a bottom portion. The temperature and time are displayed on the display panel 131. A user can press the on / off switch 132 to turn the sauna heater 100 on or off. Two light bars 133 are provided on two sides of the front panel 13, respectively.

[0026] A heating device 20 comprises a plurality of rectangular plate-shaped heating elements 21 having four sides fixed in the slot members 17 of the upper panel 11, the lower panel 12, the left panel 15 and the right panel 16, respectively. Thus, the heating elements 21 are equidistant in the housing 10. The heating element 21 comprises a heating layer 211, a first insulating layer 212, two parallel conductive strips 213 and a second insulating layer 214. The heating layer 211 is implemented as a graphene coating, and the graphene is electrically conductive, has high thermal conductivity and is capable of emitting infrared radiation. The heating layer 211 is attached to the first insulating layer 212. The first insulating layer 212 is made of crystalline glass (e.g., silicon crystalline glass) and configured to protect the heating layer 211 and transfer heat.Thus, the heating layer 211 can uniformly transfer heat. The conductive strips 213 are attached to two sides of the heating layer 211, respectively, and are configured to conduct electricity. The conductive strips 213 are made of plasma. The second insulating layer 214 is attached to the heating layer 211 to achieve thermal insulation. The second insulating layer 214 is implemented as a coating having excellent thermal insulation. The lower portions of the heating elements 21 are electrically connected to a power source 50 which is also electrically connected to the display panel 131.

[0027] A convection device 30 comprises two fans 31 on a lower side of the heating elements 21. The fans 31 are arranged in the holes 121 of the bottom panel 12, respectively. The fans 31 are vertically aligned on the heating elements 21.

[0028] A remote control 40 is electrically connected to the display panel 131. A user can use the remote control 40 to set a desired temperature and time of the sauna heater 100, such that the sauna heater 100 can heat to operate at the temperature. The desired temperature and time of the sauna heater 100 are shown on the display panel 131.

[0029] As shown in Figures 3-6, the sauna heater 100 is disposed in a sauna (e.g., a dry steam bath). A user may press the on / off switch 132 before use. The sauna heater 100 is then activated. Then, the user may use the remote control 40 to set the desired temperature and time of the sauna heater 100. Preferably, the temperature is set to 50-60°C and the time is set to 10 minutes in the embodiment of the invention. In response to powering the heating elements 21, the heating layer 211 of each heating element 21 heats up to emit infrared radiation through the first insulating layer 212 and the second insulating layer 214, respectively. In addition, the fans 31 draw air out of the sauna heater 100 through gaps between the heating elements 21. In turn, the heating elements 21 heat the air before it exits the top panel 11 of the housing 10. The sauna is thus heated. The steam and high heat cause bathers to sweat, thereby accelerating metabolism, eliminating fatigue and discomfort, and increasing vitality.

[0030] The invention has the following advantages and benefits compared to the conventional technique: the presence of the plurality of heating elements 21 increases a total heating surface. The heating layer 211 of each heating element 21 is implemented in the form of a graphene coating, and graphene is electrically conductive and has high thermal conductivity. The heating layer 211 is fixed on the first insulating layer 212 which is made of crystalline glass. The heating elements 21 are not susceptible to carbonization. Furthermore, the heating elements 21 are placed in the housing 10, and the housing 10 is made of wood. Thus, a bather cannot be injured by touching the housing 10. This increases safety during a session in the sauna. The fans 31 are placed on the lower side of the heating elements 21.In response to the heating elements 21 being energized, the heating layer 211 of each heating element 21 heats up to emit infrared radiation through the first insulating layer 212 and the second insulating layer 214, respectively. Furthermore, the fans 31 draw air out of the sauna heater 100 through gaps between the heating elements 21. And thus, the temperature in the sauna rises rapidly. The heating elements 21 have increased thermal conductivity. A bather can feel comfort because the temperature in the sauna is maintained at a suitable range. The sauna is warm and not dry. This is different from the conventional sauna which is excessively hot due to poor heat transfer and with which the bather can be injured by touching a heat source or a component installed therein.

[0031] Although the invention has been described in terms of preferred embodiments, those skilled in the art will recognize that the invention may be practiced with modifications, without departing from the scope of the present invention.

Claims

Claims

1. Sauna heating device (100), characterized in that it comprises: a housing (10) comprising a top panel (11), a bottom panel (12), a front panel (13), a rear panel (14), a left panel (15) and a right panel (16), wherein the top panel (11), the bottom panel (12), the left panel (15) and the right panel (16) each have a plurality of spaced slot members (17), and the bottom panel (12) has two holes (121); a heating device (20) comprising a plurality of plate-shaped heating elements (21) having four sides fixed in the slot members (17) of the upper panel (11), the lower panel (12), the left panel (15) and the right panel (16), respectively, such that the heating elements (21) are equidistant in the housing (10), wherein each of the heating elements (21) comprises a heating layer (211), a first insulating layer (212), two parallel conductive strips (213) and a second insulating layer (214); wherein the heating layer (211) is fixed on the first insulating layer (212) for electricity conduction and heat transfer; wherein the first insulating layer (212) is configured to protect the heating layer (211) and transfer heat such that the heating layer (211) is configured to uniformly transfer heat;wherein the conductive strips (213) are attached to two sides of the heating layer (211), respectively, and configured to conduct electricity; and wherein the second insulating layer (214) is attached to the heating layer (211) to provide thermal insulation; and; a convection device (30) comprising two fans (31) on a lower side of the heating elements (21), wherein the fans (31) are arranged in the holes (121) of the bottom panel (12), respectively; and wherein the fans (31) are vertically aligned on the heating elements (21).

2. A sauna heater (100) according to claim 1, characterized in that the front panel (13) has a display panel (131) and an on / off switch (132), wherein the display panel (131) is configured to represent a temperature and a time, and wherein the on / off switch (132) is configured to activate or deactivate the sauna heating device (100), further comprising two light bars (133) arranged on two sides of the front panel (13), respectively.

3. A sauna heating device (100) according to claim 2, characterized in that the lower portions of the heating elements (21) are electrically connected to a power supply (50) which is electrically connected to the display panel (131).

4. A sauna heating device (100) according to claim 2, characterized in that it further comprises a remote control (40) electrically connected to the display panel (131).

5. Sauna heating device (100) according to claim 1, characterized in that the heating layer (211) is implemented in the form of a graphene coating and the conductive strips (213) are made of plasma.

6. Sauna heating device (100) according to claim 1, characterized in that the first insulating layer (212) is made of crystalline glass and the second insulating layer (214) is implemented in the form of a coating having thermal insulation.

7. Sauna heating device (100) according to claim 1, characterized in that the housing (10) is made of wood.

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