Electric heater

Abstract

The electric heater comprises a shell, a heating piece, an air duct shell and a switching piece, the shell is provided with a containing cavity, an air inlet, a first air outlet and a second air outlet, and the air inlet, the first air outlet and the second air outlet communicate with the containing cavity; the heating piece is arranged in the containing cavity and corresponds to the first air outlet. The air duct shell is rotationally arranged in the containing cavity and provided with an air duct. The switching piece is located in the containing cavity and rotationally connected with the shell. The switching piece drives the air duct shell to rotate so that an outlet of the air duct can communicate with the first air outlet or the second air outlet. The first air outlet and the second air outlet are formed in the shell of the electric heater, cold air and warm air are separated by rotating the air duct shell, and the situation that the air speed is reduced due to blocking of a heating piece when natural cold air is blown is avoided.

Description

Technical Field

[0001] The present application relates to the field of air conditioning equipment, and in particular to an electric heater. Background Art

[0002] Electric heaters use electricity as their main energy source, and use resistance heating, induction heating, arc heating, electron beam heating, infrared heating and dielectric heating to provide heating through direct contact, warm air convection, far-infrared radiation and other means.

[0003] In the related art, when the heating component of the electric heater is turned off and the fan is working normally, the electric heater can be used as a fan. However, since the air outlet is blocked by the heating component, the wind speed is too small and it is difficult to meet the basic requirements as a fan, resulting in a poor user experience. Utility Model Content

[0004] The present application provides an electric heater to solve the problem that the air output is affected by the heating element when the electric heater blows natural cold air.

[0005] The present application provides an electric heater, comprising:

[0006] A housing, wherein the housing is provided with a receiving cavity, and an air inlet, a first air outlet, and a second air outlet communicated with the receiving cavity;

[0007] A heating element, the heating element is arranged in the accommodating cavity and is arranged corresponding to the first air outlet;

[0008] An air duct shell, the air duct shell is rotatably disposed in the accommodating cavity, and the air duct shell has an air duct;

[0009] A switching member is located in the accommodating cavity and is rotatably connected to the shell; the switching member drives the air duct shell to rotate so that the outlet of the air duct is connected to the first air outlet or the second air outlet.

[0010] Furthermore, the switching member is provided with a first limiting groove and a second limiting groove, and the housing is provided with a limiting assembly;

[0011] When the outlet of the air duct is connected to the first air outlet, the limiting component is in limiting cooperation with the first limiting groove;

[0012] When the outlet of the air duct is connected to the second air outlet, the limiting assembly is in limiting cooperation with the second limiting groove.

[0013] Furthermore, the housing is provided with a mounting cavity; the limiting assembly comprises:

[0014] A top column, the top column is movably arranged in the installation cavity, and the top column is limitedly matched with the first limiting groove or the second limiting groove;

[0015] An elastic member is arranged in the installation cavity, and two ends of the elastic member are respectively connected to the top column and the cavity wall of the installation cavity.

[0016] Furthermore, one end of the top column away from the elastic member is an arc-shaped surface.

[0017] Furthermore, the air duct shell is provided with an assembly rod; the switching member is provided with an assembly hole, and the assembly rod is inserted into the assembly hole.

[0018] Furthermore, the shell is provided with a mounting bracket, the mounting bracket is located in the accommodating cavity, and the air duct shell is rotatably connected to the mounting bracket; the mounting bracket is provided with an annular boss, and the switching member is rotatably sleeved on the annular boss.

[0019] Furthermore, it also includes a micro switch, which is arranged in the accommodating cavity and installed on the housing; the micro switch is electrically connected to the heating element;

[0020] The switching member is provided with a triggering part, and when the outlet of the air duct is connected to the first air outlet, the triggering part rotates to trigger the micro switch.

[0021] Furthermore, the shell is provided with an operating hole, and the operating hole is arc-shaped; the switching member is provided with a toggle portion, and the toggle portion is movably arranged in the operating hole and extends to the outside of the shell.

[0022] Furthermore, the outer wall of the shell has a first placement surface and a second placement surface, the first placement surface is perpendicular to the length direction of the shell; the second placement surface is perpendicular to the first placement surface and extends along the length direction of the shell.

[0023] Furthermore, the electric heater also includes a fan assembly and a driving device, wherein the fan assembly is rotatably disposed in the air duct; the driving device is disposed in the shell and connected to the fan assembly to drive the fan assembly to rotate.

[0024] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0025] The electric heater provided in the present application includes a shell, a heating element, an air duct shell and a switching element. The shell is provided with a accommodating cavity, and an air inlet, a first air outlet and a second air outlet connected to the accommodating cavity; the heating element is arranged in the accommodating cavity and is arranged corresponding to the first air outlet; the air duct shell is rotatably arranged in the accommodating cavity, and the air duct shell has an air duct; the switching element is located in the accommodating cavity and is rotatably connected to the shell; the switching element drives the air duct shell to rotate so that the outlet of the air duct is connected to the first air outlet or the second air outlet. In this way, the present application provides a first air outlet and a second air outlet on the shell, and drives the air duct shell to rotate through a switching member; when the outlet of the air duct rotates to be connected with the first air outlet, since a heating element is correspondingly provided at the first air outlet, the air blown out from the first air outlet is heated by the heating element, thereby achieving the purpose of blowing out warm air from the first air outlet; when the outlet of the air duct rotates to be connected with the second air outlet, since no heating element is provided at the second air outlet, cold air can be blown out directly from the second air outlet. At this time, the electric heater has the function of a fan, and since there is no obstruction of the heating element at the second air outlet, the wind speed of the cold air blown out from the first air outlet is not affected; that is, the present application provides a first air outlet and a second air outlet on the shell of the electric heater, and separates the cold and warm air by rotating the air duct shell. In this way, the wind speed will not be reduced due to the obstruction of the heating element when blowing natural cold air. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0029] Figure 1 A schematic diagram of the exploded structure of an electric heater provided in an embodiment of the present application;

[0030] Figure 2 A cross-sectional view of an electric heater provided in an embodiment of the present application;

[0031] Figure 3 A cross-sectional view of an electric heater provided in an embodiment of the present application when blowing warm air;

[0032] Figure 4 A cross-sectional view of an electric heater provided in an embodiment of the present application when blowing cold air;

[0033] Figure 5 A schematic diagram of an electric heater in a vertical position provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of a horizontally placed electric heater provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 1. Shell; 110. Accommodating cavity; 120. Air inlet; 130. First air outlet; 140. Second air outlet; 150. Mounting cavity; 160. Operation hole; 113. Mounting bracket; 114. Annular boss; 11. Peripheral shell; 111. Upper shell; 112. Base; 12. Arc-shaped portion; 121. Platform portion; 122. Second placement surface; 13. First side cover; 14. Second side cover; 15. First air outlet grille; 16. Second air outlet grille;

[0037] 2. Heating parts;

[0038] 3. Air duct shell; 31. Assembly rod;

[0039] 4. Switching member; 430. Assembly hole; 41. Toggle portion;

[0040] 5. Limiting assembly; 51. Top column; 52. Elastic member;

[0041] 6. Micro switch;

[0042] 7. Fan assembly; 8. Driving device; 81. Motor bracket. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0046] In order to solve the technical problem in the prior art that the air output of an electric heater is affected by the heating element when blowing natural cold air, the present application provides an electric heater that can achieve separate output of cold and warm air, so that the wind speed will not be reduced due to the obstruction of the heating element when blowing natural cold air.

[0047] Figures 1 to 6 An electric heater provided for an embodiment of the present application includes a shell 1, a heating element 2, an air duct shell 3 and a switching element 4, the shell 1 is provided with a accommodating cavity 110, and an air inlet 120, a first air outlet 130 and a second air outlet 140 connected to the accommodating cavity 110; the heating element 2 is arranged in the accommodating cavity 110, and is arranged corresponding to the first air outlet 130; the air duct shell 3 is rotatably arranged in the accommodating cavity 110, and the air duct shell 3 has an air duct; the switching element 4 is located in the accommodating cavity 110 and is rotatably connected to the shell 1; the switching element 4 drives the air duct shell 3 to rotate, so that the outlet of the air duct is connected to the first air outlet 130 or the second air outlet 140.

[0048] The present application provides a first air outlet 130 and a second air outlet 140 on the housing 1, and drives the air duct housing 3 to rotate through the switching member 4; when the outlet of the air duct rotates to communicate with the first air outlet 130, since the first air outlet 130 is correspondingly provided with a heating element 2, the air blown out from the first air outlet 130 is heated by the heating element 2, so that the purpose of blowing out warm air from the first air outlet 130 is achieved; when the outlet of the air duct rotates to communicate with the second air outlet 140, since the second air outlet 140 is not provided with a heating element 2, cold air can be blown out directly from the second air outlet 140. At this time, the electric heater is equivalent to the function of a fan, and since there is no obstruction of the heating element 2 at the second air outlet 140, the wind speed of the cold air blown out from the first air outlet 130 is not affected. In this way, the electric heater provided in this embodiment has two air outlet modes: warm air mode and cold water mode.

[0049] like Figure 1 , Figure 3 and Figure 4 As shown, a detachable first air outlet grille 15 is provided at the first air outlet 130, and a detachable second air outlet grille 16 is provided at the second air outlet 140. It can be understood that by providing the first air outlet grille 15 and the second air outlet grille 16, it can ensure that the electric heater can smoothly discharge air while also playing a protective, uniform air discharge and air guiding role.

[0050] The present application sets a first air outlet 130 and a second air outlet 140 on the housing 1 of the electric heater, and separates the cold and warm air by rotating the air duct shell 3, so that when blowing natural cold air, the wind speed will not be reduced due to the obstruction of the heating element 2. In this embodiment, the first air outlet 130 and the second air outlet 140 are arranged adjacent to each other, so that the air duct shell 3 can be rotated at a smaller angle to switch the air outlet mode.

[0051] like Figures 1 to 4 As shown, in the technical solution of this embodiment, the electric heater also includes a fan assembly 7 and a driving device 8. The fan assembly 7 is rotatably arranged in the air duct. The external air enters the air duct from the air inlet 120 through the rotation of the fan assembly 7, and then is discharged from the outlet of the air duct; the driving device 8 is arranged in the housing 1 and connected to the fan assembly 7 to drive the fan assembly 7 to rotate. It can be understood that the driving device 8 provides power to drive the fan assembly 7 to rotate. In this embodiment, the driving device 8 is a motor. The motor is installed in the accommodating cavity 110 through the motor bracket 81.

[0052] In the technical solution of this embodiment, the switching member 4 is provided with a first limiting groove (not numbered in the figure) and a second limiting groove (not numbered in the figure), such as Figure 1 and Figure 2As shown, the housing 1 is provided with a limit assembly 5; when the outlet of the air duct is connected to the first air outlet 130, the limit assembly 5 is limitedly matched with the first limit groove; when the outlet of the air duct is connected to the second air outlet 140, the limit assembly 5 is limitedly matched with the second limit groove. It can be understood that the limit assembly 5 is arranged on the housing 1, and because the housing 1 is fixed, the housing 1 provides support for the limit assembly 5. When the limit assembly 5 is limitedly matched with the first limit groove or the second limit groove, the switching member 4 can maintain a stable position under the action of the limit assembly 5 on the housing 1.

[0053] In this way, through the above design, in the warm air mode, the limiting cooperation between the limiting assembly 5 and the first limiting groove allows the switching member 4 to stably stay in the first position, and then the air duct shell 3 can stably stay in the position connected to the first air outlet 130, ensuring the stability of the warm air output.

[0054] In the cold air mode, the limiting cooperation between the limiting assembly 5 and the second limiting groove allows the switching member 4 to stay stably in the second position, and then the air duct shell 3 can stay stably in the position connected to the second air outlet 140, ensuring the stability of the cold air output.

[0055] like Figure 2 As shown, in the technical solution of this embodiment, the housing 1 is provided with an installation cavity 150; the limiting assembly 5 includes a top column 51 and an elastic member 52, the top column 51 is movably arranged in the installation cavity 150, and the top column 51 is limitedly matched with the first limiting groove or the second limiting groove; the elastic member 52 is arranged in the installation cavity 150, and the two ends of the elastic member 52 are respectively connected to the top column 51 and the cavity wall of the installation cavity 150. It can be understood that the installation cavity 150 provides an installation space, and the elastic member 52 can play an elastic role to ensure that the switching member 4 can rotate smoothly when switching the air outlet mode. Taking the switch from the warm air mode to the cold air mode as an example, the switching member 4 rotates to push the top column 51 to squeeze the elastic member 52, and the top column 51 exits the first limiting groove and contacts the limit. Then, the top column 51 is pressed against the switching member 4 under the action of the elastic force. As the switching member 4 rotates, the top column 51 slides along the surface of the switching member 4 until it slides to the second limiting groove and switches to the cold air mode. At this time, the top column 51 is limited and cooperates with the second limiting groove under the action of the elastic member 52.

[0056] like Figure 2 As shown, in the technical solution of this embodiment, one end of the top column 51 away from the elastic member 52 is an arc surface. It can be understood that by designing the side of the top column 51 that contacts the switching member 4 as an arc surface, it can be ensured that the top column 51 can move smoothly when switching the air outlet mode, thereby ensuring the smooth rotation of the switching member 4.

[0057] like Figure 1As shown, in the technical solution of this embodiment, the air duct housing 3 is provided with an assembly rod 31; the switching member 4 is provided with an assembly hole 430, and the assembly rod 31 is inserted into the assembly hole 430. It can be understood that the connection between the switching member 4 and the air duct housing 3 is achieved through the cooperation of the assembly rod 31 and the assembly hole 430, and at the same time, it can also achieve the purpose of rapid positioning and installation during assembly.

[0058] To improve the connection stability, in this embodiment, the number of the assembly rods 31 is at least two, and the number of the assembly holes 430 corresponds to the number of the assembly rods 31 one by one.

[0059] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the housing 1 is provided with a mounting bracket 113, the mounting bracket 113 is located in the accommodating cavity 110, the air duct housing 3 is rotatably connected to the mounting bracket 113; the mounting bracket 113 is provided with an annular boss 114, and the switching member 4 is rotatably sleeved on the annular boss 114. It can be understood that the mounting bracket 113 provides mounting support for the switching member 4, and the annular boss 114 is provided to realize the positioning and installation of the switching member 4, and provide rotation support.

[0060] like Figure 2 As shown, the limiting assembly 5 is arranged on the mounting bracket 113. Specifically, the fan assembly 7 is rotatably mounted on the mounting bracket 113, the air duct housing 3 is rotatably mounted on the mounting bracket 113, the switching member 4 and the air duct housing 3 are respectively located on both sides of the mounting bracket 113; the mounting bracket 113 is provided with a mounting cavity 150 on one side facing the switching member 4, and the elastic member 52 and the top column 51 are arranged in the mounting cavity 150. The switching member 4 is provided with the first limiting groove and the second limiting groove on one side facing the mounting bracket 113.

[0061] like Figure 1 As shown, in the technical solution of this embodiment, the electric heater further includes a micro switch 6, which is disposed in the accommodating cavity 110 and mounted on the housing 1; the micro switch 6 is electrically connected to the heating element 2;

[0062] The switch member 4 is provided with a trigger part, and when the outlet of the air duct is connected to the first air outlet 130, the trigger part rotates to trigger the micro switch 6. It can be understood that the micro switch 6 is used to control the heating element, so that the air duct housing 3 rotates to the outlet of the air duct to connect to the first air outlet 130 to turn on the heating element. When the switch member 4 drives the air duct housing 3 to rotate toward the second air outlet 140, the micro switch 6 is disconnected, and the heating element stops heating, which can ensure that the heating element can be turned on only in the warm air mode.

[0063] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, in the technical solution of this embodiment, the shell 1 is provided with an operating hole 160, and the operating hole 160 is arc-shaped; the switching member 4 is provided with a toggle portion 41, and the toggle portion 41 is movably penetrated through the operating hole 160 and extends to the outside of the shell 1.

[0064] It is understandable that by providing the toggle portion 41 extending outside the housing 1, the user can directly switch between the cold air mode and the warm air mode by toggling the toggle portion 41 without the need for an additional electric drive, thereby achieving energy saving. At the same time, the operating hole 160 can also limit the moving range of the toggle portion 41.

[0065] like Figure 2 As shown, the housing 1 includes a peripheral shell 11, a first side cover 13 and a second side cover 14, the first side cover 13 and the second side cover 14 are respectively connected to the two ends of the peripheral shell 11 to enclose a receiving cavity 110; the air inlet 120, the first air outlet 130 and the second air outlet 140 are arranged at intervals on the peripheral shell 11. The switching member 4 is disc-shaped and is arranged corresponding to the first side cover 13, and the first side cover 13 is provided with an operating hole 160.

[0066] like Figure 1 As shown, the surrounding shell 11 comprises a detachably connected upper shell 111 and a base 112, so that it is easy to disassemble and assemble. The mounting bracket 113 is arranged on a side of the base 112 facing the upper shell 111.

[0067] like Figure 6 As shown, in the technical solution of this embodiment, the outer wall of the shell 1 has a first placement surface and a second placement surface 122, the first placement surface is perpendicular to the length direction of the shell 1; the second placement surface 122 is perpendicular to the first placement surface and extends along the length direction of the shell 1. It can be understood that by setting two perpendicular first placement surfaces (not numbered in the figure) and second placement surfaces 122, the user can choose to place the first placement surface on the ground or the support table as needed, so that the electric heater can be placed as shown in FIG. Figure 5 As shown in the vertical state, or the second placement surface 122 is placed on the ground or a support table, so that the electric heater is as shown in the vertical state. Figure 6 It is shown in a horizontal position.

[0068] like Figure 6 As shown, the surrounding shell 11 includes an arc portion 12 and a platform portion 121, the arc portion 12 and the platform portion 121 are connected end to end, the platform portion 121 has a second placement surface 122, and the outer wall surface of the second side cover 14 is the first placement surface. The first platform portion 121 also has a third plane that is perpendicular to the second placement surface 122. The first air outlet 130 is arranged on the third plane, which can reduce the cold air blown from the first air outlet 130 from blowing to the ground when the electric heater is in a horizontal state.

[0069] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0070] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0071] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. An electric heater, characterized in that: include: A housing (1), the housing (1) being provided with a containing cavity (110), and an air inlet (120), a first air outlet (130), and a second air outlet (140) which are in communication with the containing cavity (110); A heating element (2), the heating element (2) being arranged in the accommodating cavity (110) and arranged corresponding to the first air outlet (130); An air duct shell (3), the air duct shell (3) being rotatably disposed in the accommodating cavity (110), the air duct shell (3) having an air duct; A switching member (4), the switching member (4) is located in the accommodating cavity (110) and is rotatably connected to the shell (1); the switching member (4) drives the air duct shell (3) to rotate, so that the outlet of the air duct is connected to the first air outlet (130) or the second air outlet (140).

2. The electric heater according to claim 1, characterized in that: The switching member (4) is provided with a first limiting groove and a second limiting groove, and the housing (1) is provided with a limiting assembly (5); When the outlet of the air duct is connected to the first air outlet (130), the limiting component (5) is in limiting cooperation with the first limiting groove; When the outlet of the air duct is connected to the second air outlet (140), the limiting assembly (5) cooperates with the second limiting groove in a limiting manner.

3. The electric heater according to claim 2, characterized in that: The housing (1) is provided with a mounting cavity (150); the limiting assembly (5) comprises: A top column (51), the top column (51) being movably arranged in the installation cavity (150), and the top column (51) being in position-limiting cooperation with the first limiting groove or the second limiting groove; An elastic member (52), wherein the elastic member (52) is disposed in the installation cavity (150), and two ends of the elastic member (52) are respectively connected to the top column (51) and the cavity wall of the installation cavity (150).

4. The electric heater according to claim 3, characterized in that: One end of the top column (51) away from the elastic member (52) is an arc-shaped surface.

5. The electric heater according to claim 1, characterized in that: The air duct housing (3) is provided with an assembly rod (31); the switching member (4) is provided with an assembly hole (430), and the assembly rod (31) is inserted into the assembly hole (430).

6. The electric heater according to claim 1, characterized in that: The shell (1) is provided with a mounting bracket (113), the mounting bracket (113) is located in the accommodating cavity (110), and the air duct shell (3) is rotatably connected to the mounting bracket (113); the mounting bracket (113) is provided with an annular boss (114), and the switching member (4) is rotatably sleeved on the annular boss (114).

7. The electric heater according to claim 1, characterized in that: It also includes a micro switch (6), which is arranged in the accommodating cavity (110) and installed on the housing (1); the micro switch (6) is electrically connected to the heating element (2); The switching member (4) is provided with a triggering portion, and when the outlet of the air duct is connected to the first air outlet (130), the triggering portion rotates to trigger the micro switch (6).

8. The electric heater according to claim 1, characterized in that: The housing (1) is provided with an operating hole (160) which is arc-shaped; the switching member (4) is provided with a toggle portion (41) which is movably arranged in the operating hole (160) and extends to the outside of the housing (1).

9. The electric heater according to claim 1, characterized in that: The outer wall of the shell (1) has a first placement surface and a second placement surface (122), wherein the first placement surface is perpendicular to the length direction of the shell (1); and the second placement surface (122) is perpendicular to the first placement surface and extends along the length direction of the shell (1).

10. The electric heater according to any one of claims 1 to 9, characterized in that: The electric heater also includes: A fan assembly (7), the fan assembly (7) being rotatably disposed in the air duct; A driving device (8), wherein the driving device (8) is disposed in the housing (1) and connected to the fan assembly (7) to drive the fan assembly (7) to rotate.

Images