Electric heater

Abstract

The utility model provides an electric heater which comprises a shell provided with a warm air outlet. The heating element is mounted at the warm air outlet; the draught fan comprises a draught fan shell and a wind wheel, the wind wheel is rotatably located in the draught fan shell, the draught fan shell is provided with an air inlet and a cold air outlet, the draught fan shell is rotatably connected to the shell and selectively located at a first position and a second position, and when the draught fan shell is located at the first position, the air inlet and the cold air outlet are formed in the draught fan shell. When the fan shell is located at the first position, the cold air outlet is not communicated with the warm air outlet, the wind wheel is used for driving external air to sequentially pass through the air inlet and the cold air outlet, and when the fan shell is located at the second position, the cold air outlet is communicated with the cold air outlet, and the wind wheel is used for driving external air to sequentially pass through the air inlet, the cold air outlet and the warm air outlet. According to the electric heater, the air volume and the air speed of the draught fan can be increased, then the air outlet efficiency of the electric heater is improved, and therefore the comfort degree of a user is improved.

Description

Technical Field

[0001] This application relates to the technical field of household appliances, and in particular to an electric heater. Background Art

[0002] A heating and cooling electric heater can generate cold air or hot air. It is a household appliance that combines heating and cooling functions and can meet the needs of different seasons. It can not only provide warmth in the cold winter but also bring coolness in the hot summer.

[0003] However, in traditional heating and cooling combined electric heaters, there is only one air outlet, that is, the cold and hot air share the same air outlet. When the electric heater needs to generate cold air, the heating element inside the electric heater will block the flow of cold air, resulting in a decrease in wind speed and air volume, and thus the air outlet efficiency of the electric heater is relatively low, affecting the user experience. Summary of the Utility Model

[0004] This application provides an electric heater to solve the technical problem that the existing heating and cooling electric heaters have a relatively low air outlet efficiency due to the sharing of the same air outlet for cold and hot air.

[0005] In a first aspect, this application provides an electric heater, including:

[0006] A housing, the housing is provided with a warm air outlet;

[0007] A heating element, the heating element is installed at the warm air outlet; and

[0008] A blower, the blower includes a blower housing and a wind wheel. The wind wheel is rotatably located inside the blower housing. The blower housing is provided with an air inlet and a cold air outlet. The blower housing is rotatably connected to the housing. The blower housing can be selectively in a first position and a second position. When the blower housing is in the first position, the cold air outlet is not communicated with the warm air outlet. The wind wheel is used to drive external air to sequentially pass through the air inlet and the cold air outlet. When the blower housing is in the second position, the cold air outlet is communicated with the warm air outlet. The wind wheel is used to drive external air to sequentially pass through the air inlet, the cold air outlet and the warm air outlet.

[0009] In a further technical solution, a first stop member is provided at an end of the blower housing, and a second stop member is provided on the housing. When the blower housing is in the first position or the second position, the first stop member and the second stop member are in stop cooperation.

[0010] A further technical solution is that one of the first stopper and the second stopper is a stopper post, and the other of the first stopper and the second stopper is a stopper groove. The stopper groove extends circumferentially along the axis of the wind wheel. The stopper post is located within the stopper groove. When the fan housing is in the first position or the second position, the stopper post is correspondingly located at both ends of the stopper groove.

[0011] A further technical solution is that the number of the stopper posts and the stopper grooves is multiple. The multiple stopper posts respectively correspond to the multiple stopper grooves one by one, and there is no communication between adjacent two stopper grooves.

[0012] A further technical solution is that one of the fan housing and the housing is provided with a contact member, and the other of the fan housing and the housing is provided with a microswitch. When the fan housing is in the first position, the contact member is separated from the microswitch. When the fan housing is in the second position, the contact member contacts the microswitch, and the microswitch is used to control the heating element to work.

[0013] A further technical solution is that the microswitch includes a microswitch body, a first conductive sheet and a second conductive sheet. The first conductive sheet and the second conductive sheet are both electrically connected to the microswitch body. When the fan housing is in the first position, the first conductive sheet and the second conductive sheet are opposite and spaced apart. When the fan housing is in the second position, the contact member pushes the first conductive sheet into contact with the second conductive sheet, and the microswitch body is used to control the heating element to work. A further technical solution is that the microswitch is located in the housing.

[0014] A further technical solution is that the outer surface of the fan housing is provided with a knob portion. The knob portion is located at the end of the fan housing and is exposed outside the housing.

[0015] A further technical solution is that the air inlet, the cold air outlet and the warm air outlet all extend along the length direction of the wind wheel.

[0016] A further technical solution is that the housing is provided with a first placement plane and a second placement plane. The second placement plane is connected and perpendicular to the first placement plane; the air inlet, the cold air outlet and the warm air outlet are not located on the first placement plane or the second placement plane.

[0017] The beneficial effects of this application are as follows: Different from the prior art, the electric heater of this application includes a housing, a heating element, and a blower. The blower includes a blower housing and the impeller. Since the housing is provided with a warm air outlet, and the blower housing is provided with an air inlet and a cold air outlet, and the heating element is installed at the warm air outlet, the impeller is rotatably located inside the blower housing. When the electric heater needs to generate cold air, the blower housing can be in the first position, and the cold air outlet is not communicated with the warm air outlet, so that the impeller can drive the external air to sequentially pass through the air inlet and the cold air outlet, so that the heating element no longer blocks the cold air, and further enables the blower to provide a larger air volume and air speed to improve the air outlet efficiency of the electric heater, ensure rapid indoor cooling in the hot season, and enhance user comfort.

[0018] When the electric heater needs to generate warm air, the blower housing can be in the second position, and the cold air outlet is communicated with the warm air outlet, so that the impeller can drive the external air to sequentially pass through the air inlet, the cold air outlet, and the warm air outlet. The heating element can heat the air flowing out of the cold air outlet and discharge the heated air from the warm air outlet to enable the electric heater to achieve the warm air effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0020] Figure 1 It is an assembled schematic diagram of the electric heater provided by this application in the first placement plane;

[0021] Figure 2 It is an assembled schematic diagram of the electric heater provided by this application in the second placement plane;

[0022] Figure 3 It is an exploded schematic diagram of an embodiment of the electric heater provided by this application;

[0023] Figure 4 It is a partial exploded schematic diagram of an embodiment of the electric heater provided by this application;

[0024] Figure 5 It is a schematic diagram of an embodiment in which the second air outlet of the electric heater provided by this application is communicated with the cold air outlet;

[0025] Figure 6 It is a schematic diagram of another embodiment in which the second air outlet of the electric heater provided by this application is communicated with the cold air outlet;

[0026] Figure 7 Schematic diagram of an embodiment in which the second air outlet in the electric heater provided by this application communicates with the warm air outlet;

[0027] Figure 8 Exploded schematic diagram of an embodiment in which the abutting member contacts the microswitch body in the electric heater provided by this application;

[0028] Figure 9 Exploded schematic diagram of an embodiment in which the first stop member and the second stop member in the electric heater provided by this application are in stop cooperation.

[0029] Explanation of the reference numerals in the drawings: Electric heater 10, housing 100, warm air outlet 110, second stop member 101, heating element 200, blower 300, blower housing 310, first stop member 301, air inlet 311, cold air outlet 312, abutting member 313, microswitch 314, microswitch body 3141, first conductive sheet 3142, second conductive sheet 3143, knob portion 315, impeller 320, first placement plane 410, second placement plane 420. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some but not all of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0032] The embodiments of the present utility model provide an electric heater, which can generate warm air or cold air, so that the electric heater can meet the needs of different seasons.

[0033] As Figures 1-4As shown in the figure, the electric heater 10 includes a housing 100, a heating element 200, and a blower 300. The housing 100 is provided with a warm air outlet 110. The heating element 200 is installed at the warm air outlet 110. The blower 300 includes a blower housing 310 and a wind wheel 320. The wind wheel 320 is rotatably located within the blower housing 310. The blower housing 310 is provided with an air inlet 311 and a cold air outlet 312. The blower housing 310 is rotatably connected to the housing 100. The blower housing 310 can be selectively in a first position and a second position. When the blower housing 310 is in the first position, the cold air outlet 312 is not communicated with the warm air outlet 110. The wind wheel 320 is used to drive external air to sequentially pass through the air inlet 311 and the cold air outlet 312. When the blower housing 310 is in the second position, the cold air outlet 312 is communicated with the warm air outlet 110. The wind wheel 320 is used to drive external air to sequentially pass through the air inlet 311, the cold air outlet 312, and the warm air outlet 110.

[0034] In this way, when the electric heater 10 needs to generate cold air, the blower housing 310 can be in the first position, and the cold air outlet 312 is not communicated with the warm air outlet 110, so that the wind wheel 320 can drive external air to sequentially pass through the air inlet 311 and the cold air outlet 312, so that the heating element 200 no longer blocks the cold air, and further enables the blower 300 to provide a greater air volume and air speed to improve the air outlet efficiency of the electric heater 10, ensuring rapid indoor cooling in hot seasons and enhancing user comfort.

[0035] When the electric heater 10 needs to generate warm air, the blower housing 310 can be in the second position, and the cold air outlet 312 is communicated with the warm air outlet 110, so that the wind wheel 320 can drive external air to sequentially pass through the air inlet 311, the cold air outlet 312, and the warm air outlet 110. The heating element 200 can heat the air flowing out of the cold air outlet 312 and flow the heated air out of the warm air outlet 110 to enable the electric heater 10 to achieve a warm air effect.

[0036] Moreover, when the electric heater 10 is in the cold air mode or the warm air mode, it can share a single blower 300 without arranging multiple blowers 300, making the structure of the electric heater 10 relatively compact.

[0037] In some embodiments, the housing 100 serves as the main frame of the fan and can be made of a durable and lightweight material and is provided with an accommodation space to accommodate the blower 300, the heating element 200, etc.

[0038] The heating element 200 is installed at the warm air outlet 110. The heating element 200 can be a heating wire or a PTC ceramic heating element. During operation, the heating element 200 can quickly heat the nearby air (such as the air near the warm air outlet 110), ensuring the provision of warm airflows in cold seasons.

[0039] The blower 300 consists of a blower housing 310 and a wind wheel 320. Inside the blower housing 310, a high-speed rotating wind wheel 320 is installed, which is responsible for driving the air flow. The blower housing 310 is provided with an air inlet 311 to ensure that air can be sucked in from the outside. The blower housing 310 is designed with a rotation mechanism so that it can rotate relative to the housing 100.

[0040] The wind wheel 320 can be rotatably arranged inside the blower housing 310. For example, the wind wheel 320 can be rotatably connected to the blower housing 310 through a bearing. For instance, the inner ring of the bearing is connected to the wind wheel 320, and the outer ring of the bearing is connected to the blower housing 310. The outer ring of the bearing can rotate relative to the inner ring of the bearing, thereby realizing the rotation of the blower housing 310 relative to the wind wheel 320.

[0041] Similarly, the blower housing 310 can be rotatably relative to the housing 100 through a bearing. For example, the inner ring of the bearing is connected to the blower housing 310, and the outer ring of the bearing is connected to the housing 100. The outer ring of the bearing can rotate relative to the inner ring of the bearing, thereby realizing the rotation of the blower housing 310 relative to the housing 100.

[0042] Exemplarily, when the user needs cold air, by rotating the blower housing 310, the blower housing 310 is rotated to the first position. At this time, the cold air outlet 312 is not communicated with the warm air outlet 110. The wind wheel 320 drives the external air to pass through the air inlet 311 and the cold air outlet 312 in sequence, that is, the air sucked by the wind wheel 320 can be directly blown out through the cold air outlet 312 without being heated by the heating element 200, providing a cool air flow. Since there is no obstruction of the heating element, the air volume and air speed of the blower 300 are maximized, ensuring an efficient cooling effect.

[0043] When the user needs warm air, the user rotates the blower housing 310 to make the blower housing 310 turn to the second position. At this time, the cold air outlet 312 is communicated with the warm air outlet 110, and the wind wheel 320 is used to drive the external air to pass through the air inlet 311, the cold air outlet 312 and the warm air outlet 110 in sequence.

[0044] That is, the heating element 200 can heat the air flowing out of the cold air outlet 312 and flow the heated air out of the warm air outlet 110, so that the electric heater 10 realizes the warm air effect.

[0045] In some embodiments, a first stop member 301 is provided at an end of the blower housing 310, and a second stop member 101 is provided on the housing 100. When the blower housing 310 is in the first position or the second position, the first stop member 301 and the second stop member 101 are in stop cooperation.

[0046] Through the cooperation of the first stop member 301 and the second stop member 101, the electric heater 10 can maintain a stable state after switching between the cold air and warm air working modes, avoiding functional disorder caused by the displacement of the blower housing 310 due to external interference during use, and improving the reliability of the product and the stability of user operation. Moreover, the design of the stop structure enables the user to quickly reach the correct position through a simple rotation action when switching between the cold and warm air modes, without worrying about difficult positioning or the need for additional locking steps, improving the convenience of use.

[0047] As Figures 1-9 shown, in some embodiments, one of the first stop member 301 and the second stop member 101 is a stop post, and the other of the first stop member 301 and the second stop member 101 is a stop groove. The stop groove extends circumferentially along the axis of the impeller 320. The stop post is located within the stop groove. When the blower housing 310 is in the first position or the second position, the stop post is correspondingly located at both ends of the stop groove.

[0048] It can be understood that when the first stop member 301 is the stop post, the second stop member 101 is the stop groove, and when the first stop member 301 is the stop groove, the second stop member 101 is the stop post.

[0049] The stop groove extends circumferentially along the axis of the impeller 320, that is, the stop groove can be arranged in a partial circular ring shape. The user only needs to gently rotate the blower housing 310. When the blower housing 310 rotates to the first position or the second position, the stop post just falls into the boundary at both ends of the stop groove and cannot be rotated further. Therefore, the user can confirm that the electric heater 10 has been correctly switched to the required mode without complex operations, improving the user experience.

[0050] In addition, since the stop post is not easily slipped out of the stop groove, by providing the stop post, the position deviation caused by misoperation can be avoided, and a more stable positioning and locking can be achieved.

[0051] In some embodiments, the number of the stop posts and the stop grooves are both multiple. The multiple stop posts respectively correspond to the multiple stop grooves one by one, and adjacent two stop grooves are not communicated with each other.

[0052] In this way, it is possible to avoid the situation where the blower housing 310 cannot be in the first position or the second position due to the damage of a single stop post, and since multiple said stop posts respectively correspond one by one to multiple said stop grooves, the reliability of the electric heater 10 can be improved.

[0053] In some embodiments, one of the blower housing 310 and the housing 100 is provided with an abutting member 313, and the other of the blower housing 310 and the housing 100 is provided with a microswitch 314. When the blower housing 310 is in the first position, the abutting member 313 is separated from the microswitch 314. When the blower housing 310 is in the second position, the abutting member 313 is in contact with the microswitch 314, and the microswitch 314 is used to control the operation of the heating element 200.

[0054] Exemplarily, the blower housing 310 may be provided with the abutting member 313, then the housing 100 may be provided with the microswitch 314; or, the housing 100 is provided with the abutting member 313, then the blower housing 310 may be provided with the microswitch 314.

[0055] Preferably, in order to make the internal structure of the device more compact, in some embodiments, the microswitch 314 is located in the housing 100.

[0056] In some embodiments, the microswitch 314 includes a microswitch body 3141, a first conductive sheet 3142 and a second conductive sheet 3143. Both the first conductive sheet 3142 and the second conductive sheet 3143 are electrically connected to the microswitch body 3141. When the blower housing 310 is in the first position, the first conductive sheet 3142 and the second conductive sheet 3143 are opposite and spaced apart. When the blower housing 310 is in the second position, the abutting member 313 pushes the first conductive sheet 3142 into contact with the second conductive sheet 3143, and the microswitch body 3141 is used to control the operation of the heating element 200.

[0057] Among them, the second position may be a vertically downward position, that is, when the blower housing 310 rotates to the position where the cold air outlet 312 is just facing the accommodation cavity of the housing, the abutting member 313 pushes the first conductive sheet 3142 into contact with the second conductive sheet 3143, triggering the microswitch 314 to conduct and controlling the operation of the heating element 200.

[0058] And since the cold air outlet 312 is just facing the accommodation cavity of the housing and is communicated with the warm air outlet 110, therefore, the heating element 200 can heat the air flowing out of the cold air outlet 312 and discharge the heated air from the warm air outlet 110, so that the electric heater 10 can achieve a warm air effect.

[0059] When the blower housing 310 rotates to different positions, the contact and separation between the abutting member 313 and the microswitch 314 automatically control the start and stop of the heating element 200, achieving intelligent operation. Users do not need an additional manual switch, which improves the convenience of using the electric heater 10. Moreover, the automatic control mechanism of the microswitch 314 can ensure that the heating element 200 starts only when needed, avoiding continuous heating caused by misoperation or forgetting to turn off, thereby avoiding waste of energy and improving the energy efficiency ratio and use safety of the electric heater 10.

[0060] In some embodiments, the outer surface of the blower housing 310 is provided with a knob portion 315, and the knob portion 315 is located at the end of the blower housing 310 and is exposed outside the housing 100. Among them, the knob portion 315 can be a knob structure.

[0061] In this way, users do not need tools or complex steps. They only need to rotate the exposed knob portion 315 to easily switch between cold air and warm air, greatly improving the user-friendliness and operation convenience of the product. And the intuitive design of the knob portion 315 enables users to quickly understand the operation logic. Even for first-time users, they can quickly master the switching skills and reduce the possibility of misoperation.

[0062] In some embodiments, the air inlet 311, the cold air outlet 312, and the warm air outlet 110 all extend along the length direction of the impeller 320.

[0063] By arranging the air inlet 311, the cold air outlet 312, and the warm air outlet 110 along the length direction of the impeller 320, while maintaining efficient heat exchange or air supply, the compactness of the product design can be achieved, which is beneficial to reducing the volume of the electric heater 10 and saving space.

[0064] As Figure 1 and Figure 2 shown, in some embodiments, the housing 100 is provided with a first placement plane 410 and a second placement plane 420, and the second placement plane 420 is connected to and perpendicular to the first placement plane 410; the air inlet 311, the cold air outlet 312, and the warm air outlet 110 are not located on the first placement plane 410 or the second placement plane 420.

[0065] By setting two mutually perpendicular placement planes, the electric heater 10 can be freely changed to a vertical or horizontal placement according to the actual use scenario and user preference, thereby expanding the applicable range of the electric heater 10. Whether it is a narrow desktop, beside a crowded bookshelf, or a spacious floor or wall-mounted position, it can be easily adapted to meet the diverse living space layouts.

[0066] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0067] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof.

[0068] The above are only specific embodiments of the present invention, enabling those skilled in the art to 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 these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An electric heater, characterized in that, Comprising: A housing provided with a warm air outlet. A heating element installed at the warm air outlet. And A blower, which includes a blower housing and a wind wheel. The wind wheel is rotatably located within the blower housing. The blower housing is provided with an air inlet and a cold air outlet. The blower housing is rotatably connected to the housing. The blower housing can selectively be in a first position and a second position. When the blower housing is in the first position, the cold air outlet is not in communication with the warm air outlet. The wind wheel is used to drive external air to sequentially pass through the air inlet and the cold air outlet. When the blower housing is in the second position, the cold air outlet is in communication with the warm air outlet. The wind wheel is used to drive external air to sequentially pass through the air inlet, the cold air outlet, and the warm air outlet.

2. The electric heater according to claim 1, characterized in that, A first stop member is provided at an end of the blower housing, and a second stop member is provided on the housing. When the blower housing is in the first position or the second position, the first stop member and the second stop member are in stop cooperation.

3. The electric heater according to claim 2, characterized in that, One of the first stop member and the second stop member is a stop post, and the other of the first stop member and the second stop member is a stop groove. The stop groove extends circumferentially along the axis of the wind wheel. The stop post is located within the stop groove. When the blower housing is in the first position or the second position, the stop post correspondingly locates at two ends of the stop groove.

4. The electric heater according to claim 3, characterized in that The number of the stop posts and the stop grooves is multiple. The multiple stop posts respectively correspond to the multiple stop grooves one by one, and there is no communication between adjacent two stop grooves.

5. The electric heater according to any one of claims 1 to 4, characterized in that One of the blower housing and the housing is provided with a contact member, and the other of the blower housing and the housing is provided with a micro switch. When the blower housing is in the first position, the contact member is separated from the micro switch. When the blower housing is in the second position, the contact member contacts the micro switch. The micro switch is used to control the heating element to work.

6. The electric heater according to claim 5, characterized in that, The micro switch includes a micro switch body, a first conductive sheet, and a second conductive sheet. The first conductive sheet and the second conductive sheet are both electrically connected to the micro switch body. When the blower housing is in the first position, the first conductive sheet and the second conductive sheet are opposite and spaced apart. When the blower housing is in the second position, the contact member pushes the first conductive sheet into contact with the second conductive sheet. The micro switch body is used to control the heating element to work.

7. The electric heater according to claim 5, wherein The micro switch is located on the housing.

8. The electric heater according to any one of claims 1 to 4, characterized in that, A knob portion is provided on the outer surface of the blower housing. The knob portion is located at an end of the blower housing and is exposed outside the housing.

9. The electric heater according to any one of claims 1 to 4, characterized in that The air inlet, the cold air outlet, and the warm air outlet all extend along the length direction of the wind wheel.

10. The electric heater according to any one of claims 1 to 4, characterized in that, The housing is provided with a first placement plane and a second placement plane. The second placement plane is connected and perpendicular to the first placement plane. The air inlet, the cold air outlet, and the warm air outlet are not located on the first placement plane or the second placement plane.

Images