Electric heater

Abstract

The utility model relates to an electric heater. The electric heater comprises a shell, a heating element and an air blowing assembly. The shell is provided with a first air duct, an air inlet and an air outlet, and the first air duct communicates with the air inlet and the air outlet; in the direction that the air inlet faces the air outlet, the heating element and the air blowing assembly are sequentially arranged in the first air duct, the first air inlet end of the air blowing assembly faces the heating element, and the first air outlet end of the air blowing assembly faces the air outlet. According to the electric heater, air heated by the heating element can be accelerated through the air blowing assembly and then is directly exhausted through the air outlet in the shell, and the air outlet efficiency of the electric heater can be improved. And secondly, the heating element is arranged on the air inlet side of the air blowing assembly, so that air entering from the air inlet of the shell can uniformly pass through the periphery and the center of the heating element, and the electric heater can effectively avoid the situation that the air is heated unevenly.

Description

Technical Field

[0001] This application relates to the field of heating, and more particularly to an electric heater. Background Technology

[0002] With the advancement of technology and social development, people's living standards have gradually improved, and their demands for their work and living environments have also increased. To maintain a comfortable indoor temperature during the cold winter, electric heaters have become a widely used appliance. Electric heaters can quickly raise the indoor temperature, thereby improving the comfort of the indoor environment and effectively enhancing people's quality of life.

[0003] In related technologies, due to unreasonable layout of electric heaters, the electric heaters suffer from low air volume and low air output efficiency. Utility Model Content

[0004] This application provides an electric heater to solve the above-mentioned technical problems.

[0005] This application provides an electric heater, which includes: a shell, a heating element, and a blower assembly; the shell has a first air duct, an air inlet, and an air outlet, and the first air duct is connected to the air inlet and the air outlet respectively; in the direction from the air inlet to the air outlet, the heating element and the blower assembly are sequentially arranged in the first air duct, the first air inlet end of the blower assembly faces the heating element, and the first air outlet end of the blower assembly faces the air outlet.

[0006] In some embodiments, the air inlet is located on the top of the housing, and the air outlet is located on the side of the housing.

[0007] In some embodiments, the air outlet is circumferentially disposed along the side of the housing.

[0008] In some embodiments, the air outlet is circumferentially disposed along the top of the housing.

[0009] In some embodiments, the air outlet is provided with a grille.

[0010] In some embodiments, a deflector is further included, which is disposed between the blower assembly and the air outlet, with the second air inlet of the deflector facing the first air outlet of the blower assembly and the second air outlet of the deflector facing the air outlet.

[0011] In some embodiments, the fairing has a second air duct with an arc-shaped cross-section.

[0012] In some embodiments, the blowing assembly includes a turbo fan or an axial fan.

[0013] In some embodiments, the heating element includes a PTC thermistor.

[0014] In some embodiments, a circuit board assembly is also included, disposed between the air inlet and the heating element.

[0015] The technical solutions provided in this application have the following advantages compared with the prior art:

[0016] The electric heater provided in this application embodiment avoids the obstruction of air accelerated by the blower assembly by the heating element, and also avoids the air obstructed by the heating element exacerbating air turbulence between the heating element and the fan. This allows the air heated by the heating element to be directly discharged through the air outlet on the outer casing after being accelerated by the blower assembly, which helps improve the air output efficiency of the electric heater. Secondly, this application places the heating element on the air inlet side of the blower assembly, so that the air entering from the air inlet of the outer casing can pass evenly around the periphery and center of the heating element, effectively preventing uneven heating of the air. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0020] Figure 1 A schematic diagram of the structure of an electric heater provided in this application embodiment.

[0021] Figure 2 A cross-sectional view of an electric heater provided in an embodiment of this application;

[0022] Figure 3 An explosion diagram of an electric heater provided in an embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Electric heater;

[0025] 10. Outer casing; 11. First air duct; 12. Air inlet; 13. Air outlet;

[0026] 20. Heating element;

[0027] 30. Blower assembly; 31. Blower; 32. Motor;

[0028] 40. Radiator fairing;

[0029] 50. Grille;

[0030] 60. Circuit board assembly;

[0031] 70. Support feet;

[0032] 80. Filter screen. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0035] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can 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 in the text will be interpreted accordingly.

[0036] In related technologies, electric heaters include a casing, a heating element, and a fan. Air enters the casing through an air inlet, and the air inside the casing needs to be accelerated by the fan before passing through the heating element. Finally, it is discharged through the air outlet of the casing to generate hot air. However, the air accelerated by the fan blows towards the heating element at a high speed. Due to the small gaps on the heating element, the heating element obstructs the air blowing towards it at a high speed. The air obstructed by the heating element causes turbulence between the heating element and the fan, resulting in a smaller air volume discharged from the air outlet of the casing.

[0037] Figure 1 This is a schematic diagram of the structure of an electric heater provided in an embodiment of this application. Figure 2 This is a cross-sectional view of an electric heater provided in an embodiment of this application. Figure 3 See the exploded schematic diagram of an electric heater provided in this application embodiment. Figures 1 to 3 To address the technical problems mentioned above, this application provides an electric heater 1 that can increase the airflow of the electric heater 1. The electric heater includes a housing 10, a heating element 20, and a blower assembly 30. The housing 10 has a first air duct 11, an air inlet 12, and an air outlet 13, with the first air duct 11 connected to both the air inlet 12 and the air outlet 13. In the direction from the air inlet 12 to the air outlet 13, the heating element 20 and the blower assembly 30 are sequentially disposed within the first air duct 11, with the first air inlet end of the blower assembly 30 facing the heating element 20 and the first air outlet end of the blower assembly 30 facing the air outlet 13.

[0038] For example, when the electric heater 1 is placed on the ground, the outer casing 10 extends vertically, and the air inlet 12, the first air duct 11, and the air outlet 13 are arranged vertically from top to bottom. The heating element 20 and the blower assembly 30 are arranged vertically from top to bottom in the first air duct 11, so that external air can enter the first air duct 11 through the air inlet 12 at the top of the outer casing 10. The air in the first air duct 11 is heated by the heating element 20 and then discharged through the blower assembly 30 and the air outlet 13. With this arrangement, the present application can avoid the situation where the air accelerated by the blower assembly 30 is blocked by the heating element 20, and avoid the air blocked by the heating element 20 from aggravating the air turbulence between the heating element 20 and the fan. The air heated by the heating element 20 can be accelerated by the blower assembly 30 and then directly discharged through the air outlet 13 on the outer casing 10, which is beneficial to improving the air output efficiency of the electric heater 1.

[0039] Secondly, since the wind speed around the blower assembly 30 is greater than the wind speed at the center, in related technologies where the air is accelerated by a fan before entering the heating element 20, the wind speed around the heating element 20 is greater than the wind speed at the center, resulting in uneven heating of the air. Based on this, this application places the heating element 20 on the air inlet side of the blower assembly 30, so that the air entering from the air inlet 12 of the outer casing 10 can pass evenly around the heating element 20 and at the center, so that the electric heater 1 of this application can effectively avoid uneven heating of the air.

[0040] In some embodiments, see Figure 1 The top of the outer casing 10 is provided with multiple support feet 70. This arrangement allows the top of the outer casing 10 to be separated from the ground to allow for air outlet, thus preventing the ground from blocking the air outlet 13.

[0041] Further, see Figure 1 and Figure 2 The air inlet 12 is located on the top of the housing 10, and the air outlet 13 is located on the side of the housing 10. This arrangement increases the airflow distance into the housing 10 and allows the air inside the housing 10 to be discharged outward from the side of the housing 10, thereby avoiding the ground from blocking the air outlet 13.

[0042] In some embodiments, see Figure 1 and Figure 2 The air outlet 13 is arranged circumferentially along the side of the outer casing 10, which can increase the area of ​​the air outlet 13 and increase the air volume of the electric heater 1 of this application, thereby improving the air output efficiency of this application.

[0043] Further, see Figure 1 and Figure 2 The air inlet 12 of this application is arranged around the top of the outer casing 10. This arrangement increases the area of ​​the air inlet 12 and increases the air intake of the electric heater 1 of this application, so that the electric heater 1 of this application has both high air intake and high air output, thereby improving the heating efficiency of this application.

[0044] In some embodiments, see Figure 1 and Figure 2 The air outlet 13 is equipped with a grille 50. The grille 50 can prevent users from inserting their hands into the first air duct 11 and causing burns, which helps to improve the safety of the electric heater 1 of this application.

[0045] In some embodiments, see Figure 2 and Figure 3This application also includes a deflector 40, which is disposed between the blower assembly 30 and the air outlet 13. The second air inlet of the deflector 40 faces the first air outlet of the blower assembly 30, and the second air outlet of the deflector 40 faces the air outlet 13.

[0046] For example, in order to improve the smoothness of airflow in the first air duct 11, the airflow direction of the blower assembly 30 of this application is the extension direction of the first air duct 11, that is, the air flowing through the first air duct 11 flows vertically downward. This application sets the air guide shroud 40 between the blower assembly 30 and the air outlet 13, and sets the air outlet 13 on the side of the housing 10. With this setting, this application can guide the air passing through the heating element 20 through the air guide shroud 40, thereby changing the air flowing in the vertical direction to be discharged in the horizontal direction. On the one hand, it can avoid the ground from blocking the air outlet 13, and on the other hand, the setting of the air guide shroud 40 can avoid the situation where the air inside the housing 10 is disturbed due to the change of the airflow direction.

[0047] In some embodiments, the air deflector 40 has a second air duct with an arc-shaped cross-section. The arc-shaped second air duct can change the air flowing in the vertical direction to the air flowing in the horizontal direction, thus avoiding turbulence in the air inside the housing 10 due to the change in the airflow direction.

[0048] In some embodiments, see Figure 2 and Figure 3 The blower assembly 30 includes a turbine fan or an axial fan. For example, the blower assembly 30 includes a turbine fan, which includes a blower 31 and a motor 32. The output shaft of the motor 32 is coaxially connected to the blower 31. The motor 32 is positioned on the side of the blower 31 facing away from the heating element 20. This arrangement ensures that the air heated by the heating element 20 is discharged along the guide shroud 40 towards the air outlet 13 under the drive of the blower 31, preventing excessive hot air from contacting the motor 32 and thus improving the service life of the motor 32.

[0049] Furthermore, the radial width of the heating element 20 is smaller than that of the blower 31. This configuration allows the heating element 20 to concentrate a higher heat density, improving the efficiency of converting electrical energy into heat energy and rapidly heating the air passing through it. Secondly, the larger diameter of the blower 31 generates a greater airflow, quickly carrying away the heat generated by the heating element 20 and distributing it evenly throughout the room. Moreover, the larger blower 31 generates sufficient airflow even at low speeds, reducing operating noise and improving the user experience.

[0050] In some embodiments, the heating element 20 includes a PTC thermistor having multiple air passages extending along the extension direction of the first air duct 11.

[0051] In some embodiments, see Figure 2 and Figure 3 This application also includes a circuit board assembly 60, which is electrically connected to the blower assembly 30 and the heating element 20. The circuit board assembly 60 controls the blower assembly 30 and the heating element 20. The circuit board assembly 60 is disposed between the air inlet 12 and the heating element 20, that is, the circuit board assembly 60 is located at the inlet end of the heating element 20. This arrangement allows the cold air entering from the air inlet 12 to pass through the circuit board assembly 60 before entering the heating element 20 for heating, thus preventing the circuit board assembly 60 from overheating.

[0052] In some embodiments, a filter 80 is provided between the circuit board assembly 60 and the air inlet 12, and the filter 80 can play a role in preventing dust.

[0053] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0055] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a 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 application according to the specific circumstances.

[0057] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can 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 top" of the second feature includes the first feature being 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 second feature includes the first feature being 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.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0059] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0060] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric heater, characterized in that, include: The housing comprises a housing, a heating element, and a blower assembly; the housing has a first air duct, an air inlet, and an air outlet, the first air duct being connected to the air inlet and the air outlet respectively; in the direction from the air inlet to the air outlet, the heating element and the blower assembly are sequentially disposed within the first air duct, the first air inlet end of the blower assembly facing the heating element, and the first air outlet end of the blower assembly facing the air outlet; The electric heater also includes a deflector, which is disposed between the blower assembly and the air outlet. The second air inlet of the deflector faces the first air outlet of the blower assembly, and the second air outlet of the deflector faces the air outlet. The air deflector has a second air duct, the cross-section of which is arc-shaped.

2. The electric heater according to claim 1, characterized in that, The air inlet is located on the top of the housing, and the air outlet is located on the side of the housing.

3. The electric heater according to claim 1, characterized in that, The air outlet is arranged circumferentially along the side of the outer casing.

4. The electric heater according to claim 1, characterized in that, The air outlet is arranged circumferentially along the top of the outer casing.

5. The electric heater according to claim 1, characterized in that, The air outlet is equipped with a grille.

6. The electric heater according to any one of claims 1 to 5, characterized in that, The blowing assembly includes a turbo fan or an axial flow fan.

7. The electric heater according to any one of claims 1 to 5, characterized in that, The heating element includes a PTC thermistor.

8. The electric heater according to any one of claims 1 to 5, characterized in that, It also includes a circuit board assembly disposed between the air inlet and the heating element.

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