Fan assembly and electric heater with same

Abstract

The invention 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] The present invention relates to the technical field of electric heaters, and in particular to a fan assembly and an electric heater having the same. Background Art

[0002] In the prior art, a heater usually uses two DC fans of the same specification, which are connected in parallel in the whole circuit. Since the air duct is not completely isolated, when the speed and frequency of the two DC fans are consistent, the airflow resonance noise of the DC fans will be caused. However, during the operation of the whole machine, the above noise is a discontinuous beat vibration with poor sound quality, which affects the user experience. Summary of the invention

[0003] The main purpose of the present invention is to provide a fan assembly and an electric heater having the same, so as to solve the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience.

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

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

[0006] Furthermore, the rotation speed of at least one fan is greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and the rotation speed of at least another fan is greater than or equal to 2450 r / min and less than or equal to 2750 r / min.

[0007] Furthermore, the rotation speed of at least one fan is greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and the rotation speed of at least another fan is greater than or equal to 2650 r / min and less than or equal to 2950 r / min.

[0008] Furthermore, the fan assembly also includes: a noise detection device, used to detect the noise value generated during the operation of the fan assembly, and the noise detection device is electrically connected to the control module; wherein, when the detection value of the noise detection device is greater than or equal to a preset noise value, the operating parameters of at least one driving device are adjusted through the control module until the detection value of the noise detection device is less than the preset noise value.

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

[0010] Furthermore, the fan assembly also includes: a voice module, which is electrically connected to the control module, and when the detection value of the noise detection device is greater than or equal to the preset noise value, the voice module is controlled by the control module to issue a voice reminder; and / or, a lighting module, which is electrically connected to the control module, and when the detection value of the noise detection device is greater than or equal to the preset noise value, the light module is controlled by the control module to be always on or flashing.

[0011] Furthermore, there are at least two air passage cavities, and the at least two air passage cavities are arranged in one-to-one correspondence with the at least two fans, and the two adjacent air passage cavities are connected through an air duct.

[0012] Furthermore, of the two adjacent fans, the rotation speed of the fan located above is greater than the rotation speed of the fan located below.

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

[0014] According to another aspect of the present invention, there is provided an electric heater comprising the above-mentioned fan assembly.

[0015] According to the technical solution of the present invention, the fan assembly includes an air duct structure and at least two fans, and the air duct structure has an air passage cavity. At least two fans are arranged in the air passage cavity at intervals along a preset direction. Among them, the rotation speeds of at least two adjacent fans are different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min. In this way, during the operation of the fan assembly, if the rotation speeds of the two fans are closer, the same-frequency resonance generated will be more obvious and the sound quality will be worse; if the rotation speed difference between the two fans is greater, the same-frequency resonance will be smaller and the sound quality will be improved. By setting the rotation speeds of at least two adjacent fans to be different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min, the airflow resonance phenomenon between the two adjacent fans is prevented from generating noise, which solves the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience, reduces the resonance noise generated during the operation of the fan assembly, and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

[0018] Figure 2 Shows Figure 1 A cross-sectional view of a fan assembly in an electric heater;

[0019] Figure 3 Shows Figure 1 A front view of the fan assembly in FIG.

[0020] Figure 4 Shows Figure 3 Side view of the fan assembly in FIG.

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

[0022] 10. Air duct structure; 11. Air cavity; 12. Air duct; 20. Fan; 21. First fan; 22. Second fan. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

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

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

[0028] By applying the technical solution of this embodiment, during the operation of the fan assembly, if the rotation speeds of the two fans 20 are closer, the same-frequency resonance will be more obvious and the sound quality will be worse; if the rotation speed difference between the two fans 20 is larger, the same-frequency resonance will be smaller and the sound quality will be improved. By setting the rotation speeds of at least two adjacent fans 20 to be different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min, the airflow resonance phenomenon between the two adjacent fans 20 is prevented from generating noise, which solves the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience, reduces the 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 cavity 11. There are two fans 20, which are arranged at intervals along the height direction of the air duct structure 10, and the speeds of the two fans 20 are different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min.

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

[0031] In the present embodiment, the fan assembly further includes at least two driving devices and a control module, and the at least two driving devices are arranged in a one-to-one correspondence with the at least two fans 20, and each driving device drives the corresponding fan 20 to rotate. The control module is electrically connected to the at least two driving devices to control the start and stop states of the driving devices and / or adjust the operating parameters of the driving devices. In this way, the driving device drives the fan 20 to rotate, and then blows the hot air generated by the electric heater into the room through the fan assembly to heat the room, thereby improving the air outlet efficiency of the fan assembly. At the same time, the start and stop states of the driving devices and / or the operating parameters of the driving devices are controlled by the control module, so as to adjust the start and stop states and / or the rotation speed of the fan 20, thereby improving the intelligence of the fan assembly.

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

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

[0034] Optionally, the rotation speed of at least one fan 20 is greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and the rotation speed of at least another fan 20 is greater than or equal to 2450 r / min and less than or equal to 2750 r / min. In this way, the above-mentioned setting increases the rotation speed difference between the two adjacent fans 20 as much as possible, further reduces the same-frequency resonance, improves the sound quality of the fan assembly, and thus prevents the airflow resonance phenomenon between the two adjacent fans 20 and generates noise, solves the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience, reduces the resonance noise generated during the operation of the fan assembly, and improves the user experience. At the same time, the above-mentioned setting ensures that the rotation speeds of at least two fans 20 do not overlap.

[0035] Optionally, the rotation speed of at least one fan 20 is greater than or equal to 2850 r / min and less than or equal to 3150 r / min, and the rotation speed of at least another fan 20 is greater than or equal to 2650 r / min and less than or equal to 2950 r / min. In this way, the above-mentioned setting increases the rotation speed difference between the two adjacent fans 20 as much as possible, further reduces the same-frequency resonance, improves the sound quality of the fan assembly, and prevents the airflow resonance phenomenon between the two adjacent fans 20 to generate noise, solves the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience, reduces the resonance noise generated during the operation of the fan assembly, and improves the user experience. At the same time, the above-mentioned setting allows the rotation speeds of at least two fans 20 to overlap slightly, as long as the sound quality experience is 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 rotation speed of the first fan 21 is 3000±150 r / min, and the rotation 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 value generated during the operation of the fan 20 assembly, and the noise detection device is electrically connected to the control module. Wherein, when the detection value of the noise detection device is greater than or equal to the preset noise value, the operating parameters of at least one driving device are adjusted through the control module until the detection value of the noise detection device is less than the preset noise value. In this way, during the operation of the fan assembly, if the noise value is greater than or equal to the preset noise value, the control module adjusts the rotation speed of at least one fan 20 through the driving device to increase the rotation speed difference between the two fans 20, thereby reducing the resonance noise.

[0038] In this embodiment, the fan 20 is a DC fan. Thus, the above arrangement makes the structure of the fan 20 simpler, easier to process and realize, and reduces the processing cost and difficulty of the fan 20.

[0039] Optionally, the fan assembly further includes a voice module, which is electrically connected to the control module. When the detection value of the noise detection device is greater than or equal to the preset noise value, the control module controls the voice module to issue a voice reminder; and / or, the fan assembly further includes a light module, which is electrically connected to the control module. When the detection value of the noise detection device is greater than or equal to the preset noise value, the control module controls the light module to be always on or flash. In this way, during the operation of the fan assembly, the noise detection device detects 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 light module to act to remind the user that the rotation speed of at least one fan 20 needs to be adjusted, further improving the intelligence 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 one-to-one correspondence with at least two fans 20, and two adjacent air passage cavities 11 are connected through the 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 cavities 11 , and two fans 20 are disposed in a one-to-one correspondence with the two air passage cavities 11 .

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

[0043] Optionally, of the two adjacent fans 20, the rotation speed of the fan 20 located at the top is greater than the rotation speed of the fan 20 located at the bottom. In this way, the above arrangement further improves the air outlet efficiency of the fan assembly, thereby improving the heating effect of the electric heater.

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

[0045] Optionally, the fan assembly further 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. In this way, during the operation of the fan assembly, the speed detection device detects the speed of the fan 20 in real time, and the display module can display the speed of the fan 20 in real time according to the detection value of the speed detection device, so that the user can obtain the speed of the fan 20, further improving the user experience.

[0046] like Figure 1 and Figure 2 As shown, the present application also provides an electric heater, comprising the above-mentioned fan assembly.

[0047] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0048] The fan assembly includes an air duct structure and at least two fans, and the air duct structure has an air passage cavity. At least two fans are arranged in the air passage cavity at intervals along a preset direction. Among them, the rotation speeds of at least two adjacent fans are different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min. In this way, during the operation of the fan assembly, if the rotation speeds of the two fans are closer, the same-frequency resonance generated will be more obvious and the sound quality will be worse; if the speed difference between the two fans is greater, the same-frequency resonance will be smaller and the sound quality will improve. By setting the rotation speeds of at least two adjacent fans to be different and the speed difference is greater than or equal to 600r / min and less than or equal to 800r / min, the airflow resonance phenomenon between the two adjacent fans is prevented from generating noise, which solves the problem in the prior art that the electric heater is prone to generate airflow resonance noise during operation and affects the user experience, reduces the resonance noise generated during the operation of the fan assembly, and improves the user experience.

[0049] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0050] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

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

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

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), at least two fans (20) are arranged in the air passage cavity (11) at intervals along a preset direction; Wherein, the rotational speeds of at least two adjacent fans (20) are different and the rotational speed difference is greater than or equal to 600 r / min and less than or equal to 800 r / min.

2. The fan assembly according to claim 1, characterized in that: The fan assembly also includes: At least two driving devices, the at least two driving devices being arranged in one-to-one correspondence with at least two of the fans (20), each of the driving devices driving the corresponding fan (20) to rotate; A control module is electrically connected to at least two of the driving devices to control the start and stop states of the driving devices and / or adjust operating parameters of the driving devices.

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

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

5. The fan assembly according to claim 2, characterized in that: The fan assembly also includes: A noise detection device is used to detect the noise value generated during the operation of the fan (20) component, and the noise detection device is electrically connected to the control module; wherein when the detection value of the noise detection device is greater than or equal to a preset noise value, the control module is used to adjust the operating parameters of at least one of the drive devices until the detection value of the noise detection device is less than the preset noise value.

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

7. The fan assembly according to claim 5, characterized in that: The fan assembly also includes: A voice module, the voice module is electrically connected to the control module, and when the detection value of the noise detection device is greater than or equal to a preset noise value, the control module controls the voice module to issue a voice reminder; and / or, A light module is electrically connected to the control module. When the detection value of the noise detection device is greater than or equal to a preset noise value, the light module is controlled by the control module to be always on or flash.

8. The fan assembly according to claim 1, characterized in that: There are at least two air passage cavities (11), at least two air passage cavities (11) are arranged in one-to-one correspondence with at least two fans (20), and two adjacent air passage cavities (11) are connected via an air duct (12).

9. The fan assembly according to claim 1, characterized in that: Of the two adjacent fans (20), the rotation speed of the fan (20) located above is greater than the rotation speed of the fan (20) located below.

10. The fan assembly according to claim 2, characterized in that: The fan assembly also includes: A rotation speed detection device, the rotation speed detection device being electrically connected to the control module and used for detecting the rotation speed of at least one of the fans (20); A display module, the display module is electrically connected to the control module and is used to display the rotation speed of the fan (20).

11. An electric heater, characterized in that: The invention comprises the fan assembly according to any one of claims 1 to 10.

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