Electric heater

Abstract

The utility model discloses an electric heater which comprises a shell, a PTC heating element and a fan are arranged in the shell, the PTC heating element is close to the front face of the shell, the fan is close to the back face of the shell, heat dissipation mesh holes are formed in the front face of the shell, air inlet mesh holes are formed in the back face of the shell, a fixing base is arranged on the shell, a plug is arranged on the fixing base, and the plug is connected with the PTC heating element. According to the utility model, the plug is directly arranged on the shell of the heater, and is directly inserted into a socket on a wall during use, so that the floor or the area of a table top is not occupied, and the use is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of heating equipment, and more specifically relates to an electric heater. Background Art

[0002] Indoor electric heaters usually use resistance wire or PTC as heating elements, such as the small sun heater, which is a reflective heater. It includes a reflective pot and a heating element located in front of the reflective pot. The reflective pot is similar to a concave mirror. The heat generated by the heating element is reflected by the reflective plate and propagates to the surrounding air. However, the angle between the tangent and the center line of the concave mirror of the reflective pot on the market is generally small, resulting in a shorter focal point of the reflective pot. It is difficult to feel the temperature when you are far away from the reflective pot.

[0003] Another example is the baseboard electric heater, which is placed on the ground and heats the entire room through the principle of rising hot air.

[0004] Existing electric heaters are usually placed on the ground or on a table, taking up a large space. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a method in which a plug is directly mounted on the housing of the heater, and when in use, the plug is directly plugged into a socket such as on a wall, without occupying an area on the ground or a desktop, and is easy to use.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an electric heater, comprising a shell, in which a PTC heating element and a fan are arranged, the PTC heating element is close to the front of the shell, the fan is close to the back of the shell, a heat dissipation mesh is provided on the front of the shell, and an air intake mesh is provided on the back of the shell, a fixing seat is provided on the shell, and a plug is provided on the fixing seat.

[0007] Furthermore, the fixing seat is installed on the back of the shell, and the fixing seat leaves an air intake space between the plug and the shell.

[0008] Furthermore, the fixing seat is rotatably connected to the shell, and a positioning component connected to the fixing seat is provided in the shell.

[0009] Furthermore, the positioning assembly includes a turntable and a positioning pin, the turntable is connected to the fixed seat, and a plurality of positioning grooves are provided on the circumferential side of the turntable. A control rod is connected to the positioning pin, and the control rod is perpendicular to the positioning pin. One end of the control rod is connected to the positioning pin, and the other end extends through the shell to the outside of the shell. The end of the control rod extending outside the shell is connected to a button, and a compression spring is arranged between the button and the shell.

[0010] Furthermore, the cross section of the control rod is polygonal.

[0011] Furthermore, a guide rod is provided on the housing, a guide groove is provided on the positioning pin, and the guide rod passes through the guide groove.

[0012] Furthermore, a mounting frame is provided in the shell, a supporting plate extending inward is provided on the bottom surface of the mounting frame, and a plurality of elastic buckles are provided on the top surface of the mounting frame, and the PTC heating element is fixed in the mounting frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: by directly installing the plug on the electric heater, the entire electric heater is located on the wall when in use, without occupying the ground or desktop space, and at the same time it can be kept away from flammable materials, greatly avoiding the risk of being covered, and at the same time the fan can quickly blow out the heat, so that the temperature in the room is quickly uniform, and the rotating fixing base can be used to rotate the plug according to the position of the socket to ensure smooth power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The three-dimensional structure of the electric heater of the utility model Figure 1 ;

[0015] Figure 2 The three-dimensional structure of the electric heater of the utility model Figure 2 ;

[0016] Figure 3 This is a cross-sectional view of the electric heater of the present invention;

[0017] Figure 4 This is a three-dimensional structural diagram of the connection part between the housing and the plug of the utility model;

[0018] Figure 5 for Figure 4 sectional view of;

[0019] Figure 6 It is a three-dimensional structural diagram of the mounting frame and PTC heating element;

[0020] Figure 7 This is a three-dimensional structural diagram of the installation frame.

[0021] Figure numerals: 1. Shell; 11. Front; 111. Heat dissipation mesh; 12. Back; 121. Air intake mesh; 13. Control area; 2. Plug; 3. Fixing seat; 4. PTC heating element; 5. Turntable; 51. Positioning slot; 6. Pin; 71. Control lever; 72. Button; 73. Compression spring; 8. Mounting frame; 81. Support plate; 82. Elastic buckle; 9. Fan. DETAILED DESCRIPTION

[0022] Reference Figures 1 to 7 The embodiment of the electric heater of the present utility model is further described.

[0023] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0025] An electric heater includes a shell 1, in which a PTC heating element 4 and a fan 9 are arranged. The PTC heating element 4 is close to the front side 11 of the shell 1, and the fan 9 is close to the back side 12 of the shell 1. The front side 11 of the shell 1 is provided with a heat dissipation mesh 111, and the back side 12 of the shell 1 is provided with an air intake mesh 121. A fixing base 3 is provided on the shell 1, and a plug 2 is provided on the fixing base 3.

[0026] The electric heater in this embodiment is a small heater, which is directly hung on the wall by plugging it into a wall socket through a plug 2. When in use, it does not occupy the ground or desktop space. At the same time, it can reduce the chance of being covered by foreign objects and reduce the chance of fire. It can heat up quickly through the PTC heating element 4. Combined with the action of the fan 9, it can quickly disperse heat into the room and accelerate air flow. The air enters through the air inlet mesh 121 on the back side 12 of the shell 1, and after being heated, it is blown out through the heat dissipation mesh 111 on the front side 11.

[0027] The heat dissipation mesh 111 and the air intake mesh 121 in this embodiment are honeycomb-shaped.

[0028] The housing 1 can prevent hands from directly coming into contact with the PTC heating element 4 and causing burns.

[0029] In this embodiment, a control area 13 is arranged on the front side 11 of the housing 1 to control the start and stop of the electric heater and adjust the temperature.

[0030] In this embodiment, the fixing base 3 is preferably installed on the back side 12 of the housing 1 , and the fixing base 3 leaves an air intake space between the plug 2 and the housing 1 .

[0031] like Figure 2 As shown, the air intake space prevents the housing 1 from being pressed against the wall, thereby ensuring sufficient air intake and preventing local overheating of the wall.

[0032] like Figure 4 As shown, the fixing seat 3 is preferably rotatably connected to the housing 1 , and a positioning component connected to the fixing seat 3 is provided in the housing 1 .

[0033] like Figure 4 and 5 As shown, the positioning assembly includes a turntable 5 and a positioning latch 6. The turntable 5 is connected to the fixed seat 3. A plurality of positioning grooves 51 are provided on the circumferential side of the turntable 5. A control rod 71 is connected to the positioning latch 6. The control rod 71 is perpendicular to the positioning latch 6. One end of the control rod 71 is connected to the positioning latch 6, and the other end extends through the shell 1 to the outside of the shell 1. The end of the control rod 71 extending outside the shell 1 is connected to a button 72, and a compression spring 73 is provided between the button 72 and the shell 1.

[0034] By pressing the button 72 into the housing 1, the control rod 71 and the positioning latch 6 are simultaneously moved toward the inside of the housing 1, and the positioning latch 6 can be disengaged from the positioning groove 51 on the turntable 5. At this time, the fixing base 3 and the turntable 5 can be rotated to adjust the relative angle of the plug 2 and the housing 1 to facilitate its insertion into the specified socket position. After the adjustment is completed, the button 72 is released, and the control rod 71 and the positioning latch 6 are reset under the action of the compression spring 73. The positioning latch 6 extends into the positioning groove 51 that is now facing the turntable 5, the fixing base 3, the plug 2 and the housing 1 no longer rotate.

[0035] Preferably, the cross section of the control rod 71 is polygonal. The polygonal control rod 71 can prevent itself from rotating and also prevent the turntable 5 from rotating with the positioning pin 6 .

[0036] In order to prevent the control rod 71 and the positioning latch 6 from rotating, a guide rod may be provided on the housing 1 and a guide groove may be provided on the positioning latch 6, through which the guide rod passes.

[0037] like Figure 4 As shown, the guide rod enables the positioning pin 6 to move axially only along the direction of the control rod 71, thereby preventing the positioning pin 6 from rotating.

[0038] like Figure 5 and 6As shown, a mounting frame 8 is provided in the housing 1 , a supporting plate 81 extending inward is provided on the bottom surface of the mounting frame 8 , a plurality of elastic buckles 82 are provided on the top surface of the mounting frame 8 , and the PTC heating element 4 is fixed in the mounting frame 8 .

[0039] In this way, the PTC heating elements 4 can be assembled quickly, wherein the PTC heating elements 4 are provided in multiple groups, and there is a gap between two adjacent groups to facilitate air flow.

[0040] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An electric heater, comprising a housing, characterized in that: A PTC heating element and a fan are arranged in the shell, the PTC heating element is close to the front of the shell, and the fan is close to the back of the shell. The front of the shell is provided with a heat dissipation mesh, and the back of the shell is provided with an air intake mesh. A fixing seat is provided on the shell, and a plug is provided on the fixing seat.

2. The electric heater according to claim 1, characterized in that: The fixing seat is installed on the back side of the shell, and the fixing seat leaves an air intake space between the plug and the shell.

3. The electric heater according to claim 2, characterized in that: The fixing seat is rotatably connected to the shell, and a positioning component connected to the fixing seat is arranged in the shell.

4. The electric heater according to claim 3, characterized in that: The positioning assembly includes a turntable and a positioning latch. The turntable is connected to the fixed seat. A plurality of positioning grooves are provided on the circumferential side of the turntable. A control rod is connected to the positioning latch. The control rod is perpendicular to the positioning latch. One end of the control rod is connected to the positioning latch, and the other end extends through the shell to the outside of the shell. The end of the control rod extending outside the shell is connected to a button, and a compression spring is provided between the button and the shell.

5. The electric heater according to claim 4, characterized in that: The cross section of the control rod is polygonal.

6. The electric heater according to claim 4, characterized in that: The housing is provided with a guide rod, the positioning pin is provided with a guide groove, and the guide rod passes through the guide groove.

7. The electric heater according to claim 5 or 6, characterized in that: A mounting frame is provided in the shell, a supporting plate extending inward is provided on the bottom surface of the mounting frame, a plurality of elastic buckles are provided on the top surface of the mounting frame, and the PTC heating element is fixed in the mounting frame.

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