Electric heaters suitable for sauna rooms

Abstract

This utility model discloses an electric heater suitable for sauna rooms, comprising: an outer shell cover, which includes a long strip-shaped shell body and a pair of shell side bodies disposed at a pair of width-direction side ends of the shell body; the pair of shell side bodies and the shell body together form a concave arc-shaped receiving cavity, the arc-shaped receiving cavity having an opening; a card assembly, which includes a pair of elastic snap-fit ​​pieces spaced apart along the length direction of the shell body; each snap-fit ​​piece is adapted to form a U-shaped snap-fit ​​through elastic deformation; an infrared heating tube, which is disposed in the arc-shaped receiving cavity by the pair of elastic snap-fit ​​pieces; and a waterproof glass, which is disposed at the opening to form a cover for the arc-shaped receiving cavity; the outer or inner wall surface of the waterproof glass is coated with an electromagnetic shielding coating.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to an electric heater suitable for sauna rooms. Background Technology

[0002] Heaters are widely used in winter. In some applications, such as bathrooms and saunas, where there is moisture, waterproof heaters are required. The overall processing requirements for waterproof heaters are higher than those for ordinary heaters, so the overall production cost will also increase accordingly. Therefore, for heaters that can achieve waterproof effects, from the perspective of reducing production costs, their structure needs to be further simplified.

[0003] In addition, saunas provide therapeutic and cleansing effects through heated spaces. The heat induces sweating, which can also alleviate muscle and joint pain, achieving a therapeutic effect. Traditional sauna heating methods utilize open flames and enclosed stoves to generate steam. However, direct use of open flame heat radiation results in a smoky sauna, and the heat generated by open flames is short-lived, requiring a continuous supply of flammable materials. While wood-burning stoves can maintain heat for a longer period, the stove itself also shields some heat. To address this, current technology uses electric heaters for saunas. These electric heaters include resistance heaters and radiant heaters. For example, infrared heating panels generate infrared radiation within the infrared spectrum. Infrared radiation activates molecules in the sauna's body, generating heat. Infrared radiation can penetrate the body more deeply (approximately 2-4 centimeters) without the need for a conductive medium, thus warming the body more effectively and comfortably to the point of inducing sweating.

[0004] Based on the above, an electric current passing through a conductor generates an electromagnetic field. An electromagnetic field is generally considered to include both an electric field and interacting magnetic fields. The electric field originates from electric charges, and its strength is typically measured in volts per meter. Electromagnetic radiation (EMR) is caused by the current of moving electric charges; infrared sauna heaters produce low-frequency electromagnetic radiation. Therefore, for infrared electric heaters used in saunas, it is necessary to consider what simplified structure can be adopted to reduce the low-frequency electromagnetic radiation generated by the infrared electric heater. Utility Model Content

[0005] The purpose of this invention is to provide an electric heater suitable for sauna rooms, in order to solve the technical problem of meeting the usage requirements of sauna rooms based on a simplified structure.

[0006] The electric heater for sauna rooms according to this invention is implemented as follows:

[0007] An electric heater suitable for sauna rooms includes:

[0008] The outer shell includes a long strip-shaped shell body and a pair of shell side bodies located at a pair of width-direction side ends of the shell body; the pair of shell side bodies and the shell body together form a concave arc-shaped receiving cavity, the arc-shaped receiving cavity having an opening;

[0009] A card assembly comprising a pair of resilient snap-fit ​​tabs spaced apart along the length of the housing body; each snap-fit ​​tab is adapted to form a U-shaped bayonet by elastic deformation.

[0010] An infrared heating tube is fixed in an arc-shaped receiving cavity by a pair of elastic snap-fit ​​tabs;

[0011] Waterproof glass, positioned at an open end to form a cover over an arc-shaped receiving cavity; the outer or inner surface of the waterproof glass is coated with an electromagnetic shielding coating.

[0012] In an optional embodiment of this utility model, the shell body includes an integrally connected inner shell and an outer shell, and a spacer cavity extending along the length direction of the shell body is formed between the inner shell and the outer shell; wherein

[0013] The inner shell and a pair of shell side bodies form the arc-shaped receiving cavity.

[0014] In an optional embodiment of this utility model, at least two external connectors are detachably provided on the side wall of the outer shell facing away from the inner shell;

[0015] A pair of flexible snap-fit ​​tabs are fixed to the inner housing by fasteners.

[0016] In an optional embodiment of this invention, each shell side body includes an inner shell body for conformally fitting with the inner shell to form an arc-shaped receiving cavity and an outer shell body located on the outer layer of the inner shell body for conformally fitting with the outer shell body.

[0017] In an optional embodiment of this invention, each of the outer shell bodies has at least one pair of connecting tabs protruding towards the shell body and adapted to extend into the spacer cavity on its sidewall facing the inner shell body; and

[0018] Both of the connecting pieces are adapted to be fastened to the housing via a connector.

[0019] In an optional embodiment of this invention, a pair of width-direction end portions of the inner housing are respectively provided with U-shaped notches through which terminals suitable for infrared heating tubes pass into the communicating cavity; and

[0020] The outer casing is equipped with a power cord for connecting to the terminals of the infrared heating wire.

[0021] In an optional embodiment of this utility model, both the inner shell and the inner body are provided with slots extending to the open opening for mounting waterproof glass.

[0022] In an optional embodiment of this utility model, a waterproof adhesive strip with a U-shaped groove for embedding waterproof glass is embedded in the slot.

[0023] In an optional embodiment of this invention, the waterproof glass is coated with an indium tin oxide coating on the wall surface facing the arc-shaped receiving cavity.

[0024] In an optional embodiment of this invention, a reflective coating is provided on the inner wall of the arc-shaped receiving cavity.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects: The electric heater of this utility model, suitable for sauna rooms, achieves waterproof effect through the cooperation of the outer shell, infrared heating tube, and waterproof glass. Its simple structure and convenient assembly reduce production costs. Furthermore, the electromagnetic shielding coating design blocks or absorbs electromagnetic waves, preventing the leakage of low-frequency electromagnetic radiation generated by the infrared heating tube, thereby reducing the harmfulness of electromagnetic radiation to the human body and improving the safety of sauna room use. Attached Figure Description

[0026] Figure 1 This is a first-view structural schematic diagram of the electric heater of this utility model suitable for sauna rooms;

[0027] Figure 2 This is a second-view structural schematic diagram of the electric heater of this utility model suitable for sauna rooms;

[0028] Figure 3 This is a partial structural diagram of the electric heater for sauna rooms according to this utility model. Figure 1 ;

[0029] Figure 4 This is a partial structural diagram of the electric heater for sauna rooms according to this utility model. Figure 2 ;

[0030] Figure 5 This is a partial structural diagram of the electric heater for sauna rooms according to this utility model. Figure 3 .

[0031] In the diagram: Infrared heating tube 1, terminal block 11, waterproof glass 2, arc-shaped receiving cavity 3, inner shell 41, outer shell 42, partition cavity 43, U-shaped notch 44, snap-fit ​​piece 6, inner shell 71, outer shell 72, connecting piece 73, external connector 8, power cord 9, slot 101, waterproof adhesive strip 102. Detailed Implementation

[0032] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0033] Example 1:

[0034] Please see Figures 1 to 5 As shown, this embodiment provides an electric heater suitable for sauna rooms, including: an outer casing, a card assembly and an infrared heating tube 1 disposed within the outer casing 42, and a waterproof glass 2 mated with the outer casing 42.

[0035] Specifically, firstly, the outer casing includes a long, narrow main body and a pair of shell side bodies located at the width-direction ends of the main body. The pair of shell side bodies and the main body together form a concave, arc-shaped receiving cavity 3. The arc-shaped receiving cavity 3 has an open opening, and its inner wall is coated with a reflective coating. This reflective coating can be made of other heat-reflecting materials such as infrared photonic crystals. The reflective coating reflects the heat generated by the infrared heating tube 1, causing the heat to radiate towards the open opening, reducing unnecessary heat radiation into the outer casing, and thus improving the heating efficiency of the infrared heating tube 1. This embodiment directly replaces the reflective cover design with a structure that provides a reflective coating on the inner wall of the arc-shaped receiving cavity 3. This simplifies the structure, reduces assembly steps, and lowers the overall weight of the electric heater.

[0036] Regarding the fitting method between the shell body and the shell side body, this embodiment illustrates a case that facilitates assembly, in conjunction with the accompanying drawings:

[0037] The shell body includes an integrally connected inner shell 41 and an outer shell 42, and a spacer cavity 43 extending along the length of the shell body is formed between the inner shell 41 and the outer shell 42; wherein the inner shell 41 and a pair of shell side bodies form an arcuate receiving cavity 3. Each shell side body includes an inner shell body 71 for conformally fitting with the inner shell 41 to form the arcuate receiving cavity 3 and an outer shell body 72 located outside the inner shell body 71 for conformally fitting with the outer shell body 42.

[0038] Based on the above, each outer shell 72 has at least one pair of connecting pieces 73 protruding towards the inner shell 71 on its sidewall, which are adapted to extend into the spacer cavity 43; and each pair of connecting pieces 73 is adapted to be fastened to the outer shell 42 by means of connectors such as, but not limited to, screws. That is to say, the inner shell 41 and the inner shell 71 are used for conformal assembly of the arc-shaped receiving cavity 3, while the outer shell 42 and the outer shell 72 are used to assemble the external structure for assembly.

[0039] Secondly, the card assembly includes a pair of elastic snap-fit ​​pieces 6 spaced apart along the length of the shell body; each snap-fit ​​piece 6 is adapted to form a U-shaped bayonet by elastic deformation; in this structure, it should be noted that the pair of elastic snap-fit ​​pieces 6 are fixed to the inner shell 41 by fasteners such as, but not limited to, screws; at least two external connectors 8 are detachably provided on the side wall of the outer shell 42 facing away from the inner shell 41.

[0040] Furthermore, the infrared heating tube 1 is fixed in the arc-shaped receiving cavity 3 by a pair of elastic snap-fit ​​pieces 6; the infrared heating tube 1 here can be any mature means in the prior art, and its specific model and implementation principle are not absolutely limited in this embodiment. In order to meet the usage requirements of the infrared heating tube 1, the inner shell 41 of this embodiment is provided with a pair of U-shaped notches 44 on its width-direction ends, which are suitable for the terminals 11 of the infrared heating tube 1 to pass through the communicating spacer cavity 43; and the outer shell 42 is provided with a power line 9 for connecting to the terminals 11 of the infrared heating wire.

[0041] Finally, the waterproof glass 2 is positioned at the opening to form a cover for the curved receiving cavity 3; the outer or inner wall surface of the waterproof glass 2 is coated with an electromagnetic shielding coating. This electromagnetic shielding coating may be, for example, but not limited to, an indium tin oxide coating.

[0042] Based on the above structure, regarding the specific way the waterproof glass 2 and the outer casing are matched, let's take an example of a case that facilitates assembly, referring to the attached diagram:

[0043] Both the inner shell 41 and the inner shell body 71 are provided with slots 101 extending to the open opening for mounting the waterproof glass 2. Furthermore, considering waterproofing, a waterproof adhesive strip 102 with a U-shaped groove for mounting the waterproof glass 2 is fitted into the slots 101. In this structure, for the fixing process of the waterproof glass 2, before assembling the shell body and the shell side body, the waterproof glass 2 is first assembled with the waterproof adhesive strip 102 in the slots 101 of the shell body. Then, when assembling the shell side body and the shell body, the waterproof glass 2 is simultaneously inserted into the waterproof adhesive strip 102 in the slots 101 of the shell side body. Finally, the tight fit between the shell side body and the shell body achieves a secure fit between the waterproof glass 2 and the shell side body.

[0044] In summary, for the electric heater suitable for sauna rooms in this embodiment, the waterproof effect of the electric heater can be achieved through the cooperation of the outer shell 42, the infrared heating tube 1, and the waterproof glass 2. The structure is simple and easy to assemble, which can reduce production costs. Furthermore, the electromagnetic shielding coating can block or absorb electromagnetic waves, preventing the leakage of low-frequency electromagnetic radiation generated by the infrared heating tube 1, thereby reducing the harmfulness of electromagnetic radiation to the human body and improving the safety of sauna room use.

[0045] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0046] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0050] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. An electric heater suitable for sauna rooms, characterized in that, include: The outer shell includes a long strip-shaped shell body and a pair of shell side bodies disposed at a pair of width-direction side ends of the shell body; The pair of shell side bodies and the shell body together form a concave arc-shaped receiving cavity, the arc-shaped receiving cavity having an open opening; A card assembly includes a pair of resilient snap-fit ​​tabs spaced apart along the length of the shell body; each snap-fit ​​tab is adapted to form a U-shaped bayonet by elastic deformation. An infrared heating element is fixed in an arc-shaped receiving cavity by a pair of elastic snap-fit ​​tabs; Waterproof glass, positioned at an open end to form a cover over an arc-shaped receiving cavity; the outer or inner surface of the waterproof glass is coated with an electromagnetic shielding coating.

2. The electric heater for sauna rooms according to claim 1, characterized in that, The shell body includes an integrally connected inner shell and an outer shell, and a spacer cavity extending along the length of the shell body is formed between the inner shell and the outer shell; wherein The inner shell and a pair of shell side bodies form the arc-shaped receiving cavity.

3. The electric heater for sauna rooms according to claim 2, characterized in that, At least two external connectors are detachably provided on the side wall of the outer shell facing away from the inner shell; A pair of flexible snap-fit ​​tabs are fixed to the inner housing by fasteners.

4. The electric heater for sauna rooms according to claim 2, characterized in that, Each of the shell-side bodies includes an inner shell body for conformally fitting with the inner shell to form an arcuate receiving cavity and an outer shell body located on the outer layer of the inner shell body for conformally fitting with the outer shell body.

5. The electric heater for sauna rooms according to claim 4, characterized in that, Each of the outer shell bodies has at least one pair of connecting tabs protruding towards the inner shell body on its sidewall, suitable for extending into the spacer cavity; and Both of the connecting pieces are adapted to be fastened to the housing via a connector.

6. The electric heater suitable for sauna rooms according to any one of claims 2 to 5, characterized in that, The inner housing has a pair of width-direction side ends, each with a U-shaped notch through which a terminal suitable for an infrared heating tube passes in a communicating cavity; and The outer casing is equipped with a power cord for connecting to the terminals of the infrared heating wire.

7. The electric heater suitable for sauna rooms according to any one of claims 2 to 5, characterized in that, Both the inner shell and the inner body of the shell are provided with slots that extend to the open opening for mounting waterproof glass.

8. The electric heater for sauna rooms according to claim 7, characterized in that, A waterproof adhesive strip with a U-shaped groove for securing waterproof glass is embedded in the slot.

9. The electric heater for sauna rooms according to claim 1, characterized in that, The electromagnetic shielding coating is an indium tin oxide coating.

10. The electric heater for sauna rooms according to claim 1, characterized in that, The inner wall of the arc-shaped receiving cavity is provided with a reflective coating.

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