Fan assembly and electric heater with same

Abstract

The utility model provides a fan assembly and an electric heater with the same. The draught fan assembly comprises an air duct structure, an air inlet structure and an air outlet structure, the at least two fans are arranged in the air passing cavity at intervals in the preset direction; the rotating speeds of at least two adjacent fans are different, and the rotating speed difference value is larger than or equal to 600 r / min and smaller than or equal to 800 r / min. The electric heater effectively solves the problem that in the prior art, an electric heater is prone to generating airflow resonance noise in the operation process, and the use experience of a user is affected.

Description

Technical Field

[0001] This utility model relates to the field of electric heater technology, and more specifically, to a fan assembly and an electric heater having the same. Background Technology

[0002] In existing technologies, space heaters typically use two identical DC fans connected in parallel within the overall circuitry. Because the air ducts are not completely isolated, when the two DC fans operate at the same speed and frequency, airflow resonance noise can occur. However, during operation, this noise is a discontinuous, beat-like vibration with poor sound quality, negatively impacting the user experience. Utility Model Content

[0003] The main purpose of this utility model is to provide a fan assembly and an electric heater having the same, so as to solve the problem that electric heaters in the prior art are prone to generating airflow resonance noise during operation, which affects the user experience.

[0004] To achieve the above objectives, according to one aspect of the present invention, a fan assembly is provided, comprising: a duct structure having an air passage cavity; at least two fans, wherein the at least two fans are spaced apart in the air passage cavity along a preset direction; wherein at least two adjacent fans have different rotational speeds and the speed difference is greater than or equal to 600 r / min and less than or equal to 800 r / min.

[0005] Furthermore, the fan assembly also includes: at least two drive units, each drive unit being configured in a one-to-one correspondence with at least two fans, each drive unit driving the corresponding fan to rotate; and a control module, which is electrically connected to both drive units to control the start / stop status of the drive units and / or adjust the operating parameters of the drive units.

[0006] Furthermore, at least one fan has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan has a rotational speed greater than or equal to 2450 r / min and less than or equal to 2750 r / min.

[0007] Furthermore, at least one fan has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan has a rotational speed greater than or equal to 2650 r / min and less than or equal to 2950 r / min.

[0008] Furthermore, the wind turbine assembly also includes: a noise detection device for detecting the noise value generated during the operation of the wind turbine assembly, the noise detection device being electrically connected to the control module; wherein, when the detected value of the noise detection device is greater than or equal to a preset noise value, the operating parameters of at least one drive device are adjusted by the control module until the detected value of the noise detection device is less than the preset noise value.

[0009] Furthermore, the fan is a DC fan.

[0010] Furthermore, the wind turbine assembly also includes: a voice module, which is electrically connected to the control module, and which, when the noise detection device detects a value greater than or equal to a preset noise value, controls the voice module to issue a voice reminder; and / or a light module, which is electrically connected to the control module, and which, when the noise detection device detects a value greater than or equal to a preset noise value, controls the light module to remain constantly lit or flash.

[0011] Furthermore, there are at least two air passages, and at least two air passages are provided in a one-to-one correspondence with at least two fans, with two adjacent air passages connected by air ducts.

[0012] Furthermore, in two adjacent fans, the fan located above rotates at a higher speed than the fan located below.

[0013] Furthermore, the fan assembly also includes: a speed detection device electrically connected to the control module for detecting the speed of at least one fan; and a display module electrically connected to the control module for displaying the speed of the fan.

[0014] According to another aspect of the present invention, an electric heater is provided, including the aforementioned fan assembly.

[0015] The present invention provides a fan assembly comprising a duct structure and at least two fans, the duct structure having an air passage cavity. The at least two fans are spaced apart within the air passage cavity along a predetermined direction. Specifically, the rotational speeds of at least two adjacent fans are different, with a speed difference greater than or equal to 600 r / min and less than or equal to 800 r / min. Thus, during operation, if the rotational speeds of the two fans are closer, the resulting resonance will be more pronounced, leading to poorer sound quality; conversely, if the rotational speeds of the two fans differ significantly, the resonance will be smaller, improving sound quality. By setting the rotational speeds of at least two adjacent fans to be different, with a speed difference greater than or equal to 600 r / min and less than or equal to 800 r / min, airflow resonance between adjacent fans is prevented from generating noise. This solves the problem in existing electric heaters where airflow resonance noise easily affects the user experience, reducing resonance noise generated during fan assembly operation and improving the user experience. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A front view of an embodiment of the fan assembly according to the present invention applied to an electric heater is shown;

[0018] Figure 2 It shows Figure 1 The fan assembly in the diagram is used in a cross-sectional view of an electric heater;

[0019] Figure 3 It shows Figure 1 Main view of the wind turbine component;

[0020] Figure 4 It shows Figure 3 A side view of the wind turbine components.

[0021] The above figures include the following reference numerals:

[0022] 10. Air duct structure; 11. Air passage cavity; 12. Air duct; 20. Fan; 21. First fan; 22. Second fan. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, directional terms such as "upper" and "lower" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] In order to solve the problem that electric heaters in the prior art are prone to generating airflow resonance noise during operation, which affects the user experience, this application provides a fan assembly and an electric heater having the same.

[0027] like Figures 1 to 4 As shown, the fan assembly includes a duct structure 10 and at least two fans 20. The duct structure 10 has an air passage cavity 11, and the at least two fans 20 are spaced apart in the air passage cavity 11 along a predetermined direction. The at least two adjacent fans 20 have different rotational speeds, and the speed difference is greater than or equal to 600 r / min and less than or equal to 800 r / min.

[0028] Applying the technical solution of this embodiment, during the operation of the fan assembly, if the rotational speeds of the two fans 20 are closer, the resulting resonance at the same frequency will be more pronounced, and the sound quality will be worse; conversely, if the rotational speeds of the two fans 20 differ more, the resonance at the same frequency will be smaller, and the sound quality will be improved. By setting the rotational speeds of at least two adjacent fans 20 to be different, with a speed difference greater than or equal to 600 r / min and less than or equal to 800 r / min, airflow resonance between adjacent fans 20, which generates noise, is prevented. This solves the problem in the prior art where electric heaters easily generate airflow resonance noise during operation, affecting the user experience, reduces resonance noise generated during the operation of the fan assembly, and improves the user experience.

[0029] In this embodiment, the preset direction is the height direction of the air passage 11. There are two fans 20, which are arranged at intervals along the height direction of the air duct structure 10. The two fans 20 have different rotational speeds, and the speed difference is greater than or equal to 600 r / min and less than or equal to 800 r / min.

[0030] It should be noted that the number of fans 20 is not limited to this and can be adjusted according to operating conditions and usage requirements. Optionally, there may be three, four, five, six, or more fans 20.

[0031] In this embodiment, the fan assembly further includes at least two drive devices and a control module. The at least two drive devices are configured one-to-one with at least two fans 20, and each drive device drives its corresponding fan 20 to rotate. The control module is electrically connected to both drive devices to control their start / stop status and / or adjust their operating parameters. Thus, the drive devices drive the fans 20 to rotate, thereby blowing the hot air generated by the electric heater into the room through the fan assembly to heat the room and improve the airflow efficiency of the fan assembly. Simultaneously, the control module controls the start / stop status of the drive devices and / or adjusts their operating parameters to adjust the start / stop status and / or speed of the fans 20, thereby enhancing the intelligence level of the fan assembly.

[0032] In this embodiment, there are two drive devices, and the two drive devices are arranged one-to-one with the two fans 20.

[0033] It should be noted that the number of drive units is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, there may be three, four, five, six, or more drive units.

[0034] Optionally, at least one fan 20 has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan 20 has a rotational speed greater than or equal to 2450 r / min and less than or equal to 2750 r / min. This arrangement maximizes the speed difference between two adjacent fans 20, further minimizing resonance at the same frequency, improving the sound quality of the fan assembly, and preventing airflow resonance between adjacent fans 20 that could generate noise. This solves the problem in existing technologies where electric heaters easily generate airflow resonance noise during operation, affecting the user experience. It reduces resonance noise generated during fan assembly operation and improves the user experience. Simultaneously, this arrangement ensures that the rotational speeds of at least two fans 20 do not overlap.

[0035] Optionally, at least one fan 20 has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan 20 has a rotational speed greater than or equal to 2650 r / min and less than or equal to 2950 r / min. This arrangement maximizes the speed difference between two adjacent fans 20, further minimizing resonance at the same frequency, improving the sound quality of the fan assembly, and preventing airflow resonance between adjacent fans 20 that could generate noise. This solves the problem in existing electric heaters where airflow resonance noise easily affects the user experience, reducing resonance noise generated during fan assembly operation and improving the user experience. Simultaneously, this arrangement allows for a slight overlap in the rotational speeds of at least two fans 20, as long as the sound quality remains within an acceptable range.

[0036] In this embodiment, the two fans 20 include a first fan 21 and a second fan 22. The first fan 21 is located above the second fan 22. The rotational speed of the first fan 21 is 3000±150 r / min, and the rotational speed of the second fan 22 is 2600±150 r / min.

[0037] Optionally, the fan assembly also includes a noise detection device. The noise detection device is used to detect the noise level generated during the operation of the fan assembly 20, and is electrically connected to the control module. Specifically, when the noise level detected by the noise detection device is greater than or equal to a preset noise level, the control module adjusts the operating parameters of at least one drive device until the noise level detected by the noise detection device is less than the preset noise level. Thus, during the operation of the fan assembly, if the noise level is greater than or equal to the preset noise level, the control module adjusts the rotational speed of at least one fan 20 via the drive device to increase the speed difference between the two fans 20, thereby reducing resonance noise.

[0038] In this embodiment, the fan 20 is a DC fan. This configuration simplifies the structure of the fan 20, making it easier to manufacture and implement, and reducing the manufacturing cost and difficulty of the fan 20.

[0039] Optionally, the fan assembly also includes a voice module electrically connected to the control module. When the noise detection device's detected value is greater than or equal to a preset noise value, the control module controls the voice module to issue a voice reminder. And / or, the fan assembly also includes a lighting module electrically connected to the control module. When the noise detection device's detected value is greater than or equal to a preset noise value, the control module controls the lighting module to remain constantly lit or flash. Thus, during the operation of the fan assembly, the noise detection device monitors the noise value in real time. If the noise value is greater than or equal to the preset noise value, the control module controls the voice module and / or the lighting module to activate, reminding the user to adjust the speed of at least one fan 20, further enhancing the intelligence level of the fan assembly.

[0040] Optionally, there are at least two air passage cavities 11, and at least two air passage cavities 11 are arranged in a one-to-one correspondence with at least two fans 20. Two adjacent air passage cavities 11 are connected by an air duct 12. In this way, the above arrangement ensures that at least two fans 20 are arranged in a non-isolated air duct to improve the air outlet efficiency of the fan assembly.

[0041] In this embodiment, there are two air passage chambers 11, and two fans 20 are arranged in a one-to-one correspondence with the two air passage chambers 11.

[0042] It should be noted that the number of air passages 11 is not limited to this and can be adjusted according to working conditions and usage requirements. Optionally, there may be three, four, five, six, or more air passages 11.

[0043] Optionally, in two adjacent fans 20, the upper fan 20 has a higher rotational speed than the lower fan 20. This arrangement further improves the airflow efficiency of the fan assembly, thereby enhancing the heating effect of the electric heater.

[0044] In this embodiment, the rotational speed of the first fan 21 is greater than that of the second fan 22.

[0045] Optionally, the fan assembly also includes a speed detection device and a display module. The speed detection device is electrically connected to the control module to detect the speed of at least one fan 20. The display module is electrically connected to the control module to display the speed of the fan 20. Thus, during the operation of the fan assembly, the speed detection device monitors the speed of the fan 20 in real time, and the display module can display the speed of the fan 20 in real time based on the detected value, allowing users to obtain the speed of the fan 20 and further improving the user experience.

[0046] like Figure 1 and Figure 2 As shown, this application also provides an electric heater, including the aforementioned fan assembly.

[0047] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0048] The fan assembly includes an air duct structure and at least two fans, the air duct structure having an air passage cavity. The at least two fans are spaced apart within the air passage cavity along a predetermined direction. Specifically, at least two adjacent fans have different rotational speeds, with a speed difference greater than or equal to 600 r / min and less than or equal to 800 r / min. Thus, during operation, if the rotational speeds of the two fans are closer, the resulting resonance will be more pronounced, and the sound quality will be worse; conversely, if the speed difference between the two fans is greater, the resonance will be smaller, and the sound quality will be improved. By setting the rotational speeds of at least two adjacent fans to be different, with a speed difference greater than or equal to 600 r / min and less than or equal to 800 r / min, airflow resonance between adjacent fans is prevented from generating noise. This solves the problem of airflow resonance noise in existing electric heaters that easily affects the user experience, reduces resonance noise generated during fan assembly operation, and improves the user experience.

[0049] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0050] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0051] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fan assembly, characterized in that, include: The air duct structure (10) has an air passage cavity (11); At least two fans (20) are arranged at intervals in the air passage cavity (11) along a preset direction; Among them, at least two adjacent fans (20) have different speeds and the speed difference is greater than or equal to 600 r / min and less than or equal to 800 r / min.

2. The wind turbine assembly according to claim 1, characterized in that, The wind turbine assembly also includes: At least two drive devices are provided, each drive device is provided in a one-to-one correspondence with at least two of the fans (20), and each drive device drives the corresponding fan (20) to rotate. A control module is electrically connected to at least two of the drive devices to control the start / stop status of the drive devices and / or adjust the operating parameters of the drive devices.

3. The wind turbine assembly according to claim 1, characterized in that, At least one of the fans (20) has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan (20) has a rotational speed greater than or equal to 2450 r / min and less than or equal to 2750 r / min.

4. The wind turbine assembly according to claim 1, characterized in that, At least one of the fans (20) has a rotational speed greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and at least another fan (20) has a rotational speed greater than or equal to 2650 r / min and less than or equal to 2950 r / min.

5. The wind turbine assembly according to claim 2, characterized in that, The wind turbine assembly also includes: A noise detection device is used to detect the noise value generated during the operation of the fan (20) assembly. The noise detection device is electrically connected to the control module. When the detected value of the noise detection device is greater than or equal to a preset noise value, the operating parameters of at least one of the drive devices are adjusted by the control module until the detected value of the noise detection device is less than the preset noise value.

6. The wind turbine assembly according to claim 1, characterized in that, The fan (20) is a DC fan.

7. The wind turbine assembly according to claim 5, characterized in that, The wind turbine assembly also includes: A voice module, electrically connected to the control module, provides a voice prompt when the noise detection device detects a value greater than or equal to a preset noise value; and / or, the control module controls the voice module to issue a voice reminder. The lighting module is electrically connected to the control module. When the noise detection value is greater than or equal to a preset noise value, the control module can control the lighting module to remain constantly lit or flash.

8. The wind turbine assembly according to claim 1, characterized in that, There are at least two air passages (11), and at least two air passages (11) are provided in a one-to-one correspondence with at least two fans (20). Two adjacent air passages (11) are connected by air ducts (12).

9. The wind turbine assembly according to claim 1, characterized in that, Of the two adjacent fans (20), the upper fan (20) has a higher rotational speed than the lower fan (20).

10. The wind turbine assembly according to claim 2, characterized in that, The wind turbine assembly also includes: A speed detection device, which is electrically connected to the control module, is used to detect the speed of at least one of the fans (20); The display module is electrically connected to the control module to display the rotational speed of the fan (20).

11. An electric heater, characterized in that, Includes the wind turbine assembly as described in any one of claims 1 to 10.

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