Eccentric long-strip-shaped cross flow fan

Abstract

The utility model relates to the technical field of fans, in particular to an eccentrically-arranged long-strip-shaped cross flow fan, and aims to solve the problem that the air speed of a large-area air outlet in the prior art can be gradually reduced from the middle to the two ends, a plurality of partition plates are arranged on an air supply grille, and the air supply grille is divided into a plurality of air supply outlets through the partition plates. An air outlet with a large area is equally divided into a plurality of air outlets with small areas, air loss can be reduced when the air outlets with the small areas discharge air, the air speed of the air outlets is 1 m / s higher than the air speed of the two ends of the air outlets in the prior art, the air speed of each air outlet is uniform and stable, and the service life of the air outlets is prolonged. According to the cross-flow fan, air can be stably output, compared with a cross-flow fan with the same power and the same length, the cross-flow fan is smoother in air output, larger in air output amount and air speed, smaller in noise and higher in air speed, and therefore the fan structure can increase the air output amount of the fan under the condition that the power of the wind wheel is not increased, and the market influence is better.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an eccentrically arranged long strip cross-flow fan. Background Art

[0002] The working principle of the cross-flow fan is mainly based on the principle of aerodynamics. The airflow is generated by the rotation of the impeller. Its characteristics are that the fluid flows through the fan impeller twice, the air intake and exhaust directions are in the same plane, and the exhaust gas is evenly distributed along the width of the fan. This design makes the cross-flow fan have the advantages of simple structure, small size, high dynamic pressure coefficient and long reach.

[0003] The air supply of a cross-flow fan is affected by the power of the impeller. The greater the power of the impeller, the greater the air supply. At the same time, the greater the power consumption and cost. The air supply of the fan is also affected by the area of ​​the air outlet. Generally, the larger the area of ​​the air outlet, the greater the air volume. However, if the area of ​​the air outlet is too large, a large amount of air will be lost from both ends of the air outlet, thereby reducing the output of wind speed and air volume. On the contrary, an outlet area that is too small will increase the resistance to air flow, requiring the fan to have greater power to maintain the same air volume. Therefore, for a cross-flow fan with a longer length, the air outlet area is larger, which is prone to air loss when the air is discharged. Therefore, when designing the area size of the air outlet, it is necessary to minimize energy consumption while meeting the air volume requirements.

[0004] To this end, the present application specifically designs a cross-flow fan that can increase the air supply and is relatively stable without changing the impeller power, particularly a long strip cross-flow fan with a longer length. Utility Model Content

[0005] In order to solve the above technical problems, the purpose of the utility model is to provide an eccentrically arranged long strip cross-flow fan, which can increase the air output of the cross-flow fan when the wind wheel power is equal.

[0006] The utility model adopts the following technical scheme to solve the problem: an eccentrically arranged long strip cross-flow fan comprises a shell and a wind wheel, the front side of the shell is provided with an air supply grille, the rear side of the shell is provided with an air inlet grille, the wind wheel is arranged in the shell, and the shell is provided with a driving motor for driving the wind wheel to rotate; an air inlet channel is formed between the wind wheel and the top of the shell, the wind wheel and the front side of the shell form an air outlet channel, the air supply grille is provided with a plurality of neatly arranged partitions, the partitions separate the air supply grille into a plurality of air outlets, and the air flows through the air inlet grille, the air inlet channel, the air outlet channel and the air supply outlet in sequence.

[0007] As a further improvement of the above technical solution, the wind wheel is eccentrically arranged in the shell.

[0008] As a further improvement of the above technical solution, the distance α between the central axis of the wind wheel and the rear edge of the partition is 48-55 mm.

[0009] As a further improvement of the above technical solution, the distance β between the center axis of the wind wheel and the rear side wall of the shell is 45-55mm; the distance γ between the center axis of the wind wheel and the front side wall of the shell is 70-80mm; the distance δ between the center axis of the wind wheel and the inner side wall of the top of the shell is 50-60mm; the distance θ between the center axis of the wind wheel and the inner side wall of the bottom of the shell is 45-55mm.

[0010] As a further improvement of the above technical solution, the radius of the wind wheel is 43-45 mm.

[0011] As a further improvement of the above technical solution, a wind shield is provided on the front side of the shell, and the wind shield is located beside the air supply grille.

[0012] As a further improvement of the above technical solution, the distance between the wind wheel and the partition is 5-10mm, the distance between the wind wheel and the air supply grille is 30-40mm; the distance between the wind wheel and the inner wall of the top of the shell is 10.5-11.5mm; the distance between the wind wheel and the inner wall of the bottom of the shell is 4.5-5.5mm; the distance between the wind wheel and the wind shield is 7-12mm.

[0013] As a further improvement of the above technical solution, the shell includes a front cover and a rear cover, the air supply grille and the partition are arranged on the front cover, the air inlet grille is arranged on the rear cover, and the drive motor is fixedly arranged on the rear cover; the front cover is rotatably connected to the rear cover, and the rear cover is provided with a shaking motor for driving the front cover to shake its head.

[0014] As a further improvement of the above technical solution, the cross-sections of the partition plate and the front cover are both arc-shaped.

[0015] The beneficial effect of the present invention is as follows: for the large-area air outlet in the prior art, the wind speed of the air outlet will gradually decrease from the middle to the two ends, while the present application sets a number of neatly arranged partitions on the air supply grille, and separates the air supply grille into a number of air supply outlets through the partitions, which is equivalent to dividing a large-area air outlet into a number of small-area air outlets. The small-area air outlets can reduce air loss when air is discharged. The air outlet wind speed of the present application is 1m / s higher than the wind speed at both ends of the air outlet in the prior art. The wind speed of each air outlet in the present application is uniform and stable. The cross-flow fan of the present application can discharge air stably, and compared with the cross-flow fan of the same power and length, the air outlet of the present application is smoother, the air volume and wind speed are larger, the noise is smaller, and the wind speed is higher. Therefore, the fan structure of the present application can increase the air supply of the fan without increasing the power of the wind wheel, and has greater market influence. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is an exploded view of the utility model;

[0019] Figure 3 This is a structural diagram of the front cover of the utility model;

[0020] Figure 4 It is the front view of the utility model;

[0021] Figure 5 for Figure 4 Cross-sectional view of the AA portion.

[0022] In the figure: 1-housing, 11-air supply grille, 12-air inlet grille, 13-air inlet channel, 14-air outlet channel, 15-partition, 16-air supply port, 17-front cover, 18-rear cover, 19-wind shield, 2-wind wheel, 3-drive motor, 4-shaking motor. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figures 1 to 5 An eccentrically arranged long strip cross-flow fan comprises a housing 1 and a wind wheel 2. An air supply grille 11 is arranged on the front side of the housing 1, an air inlet grille 12 is arranged on the rear side of the housing 1, the wind wheel 2 is arranged in the housing 1, and a driving motor 3 for driving the wind wheel 2 to rotate is arranged on the housing 1; an air inlet channel 13 is formed between the wind wheel 2 and the top of the housing 1, and an air outlet channel 14 is formed between the wind wheel 2 and the front side of the housing 1;

[0028] For the large-area air outlet in the prior art, the wind speed of the air outlet will gradually decrease from the middle to the two ends, while the present application sets a plurality of neatly arranged partitions 15 on the air supply grille 11, and separates the air supply grille 11 into a plurality of air supply outlets 16 through the partitions 15, which is equivalent to dividing a large-area air outlet into a plurality of small-area air outlets. The small-area air outlets can reduce air loss when the air is discharged. The air outlet wind speed of the present application is 1m / s higher than the wind speed at both ends of the air outlet in the prior art. The wind speed of each air outlet in the present application is uniform and stable. The cross-flow fan of the present application can discharge air stably, and compared with the cross-flow fan of the same power and length, the air discharge of the present application is smoother, the air discharge volume and wind speed are larger, the noise is smaller, and the wind speed is higher. Therefore, the fan structure of the present application can increase the air supply volume of the fan without increasing the power of the wind wheel, and has greater market influence.

[0029] The air flows through the air inlet grille 12 , the air inlet passage 13 , the air outlet passage 14 and the air supply port 16 in sequence.

[0030] In a preferred embodiment, the wind wheel 2 is eccentrically arranged in the shell 1. Through the wind wheel 2 eccentrically arranged in the shell 1, the volume of the air inlet channel 13 in the fan is smaller than the volume of the air outlet channel 14. The external air enters through the air inlet grille 12. Under the rotation of the wind wheel 2, the air is compressed in the air inlet channel 13, and the air pressure increases. Then, the air passes through the air outlet channel 14 and is discharged from the air supply port 16, so that the difference between the negative pressure at the air inlet channel 13 of the fan and the high pressure at the air outlet channel 14 is larger in proportion, thereby reducing the air outlet resistance, making the air outlet smoother, the air outlet volume and wind speed larger, and the noise smaller. The wind speed can reach 6-7m / s.

[0031] In a preferred embodiment, the distance α between the central axis of the wind wheel 2 and the rear edge of the partition 15 is 48-55 mm, and the preferred distance α is 50 mm.

[0032] In a preferred embodiment, the distance β between the central axis of the wind wheel 2 and the rear side wall of the housing 1 is 45-55 mm, and the preferred distance β is 50 mm;

[0033] The distance γ between the central axis of the wind wheel 2 and the front side wall of the housing 1 is 70-80 mm, preferably 73.1 mm;

[0034] The distance δ between the central axis of the wind wheel 2 and the inner side wall of the top of the housing 1 is 50-60 mm, and the preferred distance δ is 55.4 mm;

[0035] The distance θ between the central axis of the wind wheel 2 and the inner wall of the bottom of the housing 1 is 45-55 mm, and the preferred distance θ is 49.4 mm.

[0036] In a preferred embodiment, the radius of the wind wheel 2 is 43-45 mm, and the preferred radius is 44.5 mm.

[0037] In a preferred embodiment, in order to further improve the air pressure and effect inside the fan, a wind shield 19 is provided on the front side of the housing 1 , and the wind shield 19 is located beside the air supply grille 11 .

[0038] In a preferred embodiment, the distance between the wind wheel 2 and the partition 15 is 5-10 mm, preferably 8 mm;

[0039] The distance between the wind wheel 2 and the air supply grille 11 is 30-40 mm, preferably 35 mm;

[0040] The distance between the wind wheel 2 and the inner side wall of the top of the housing 1 is 10.5-11.5 mm, preferably 11 mm;

[0041] The distance between the wind wheel 2 and the inner wall of the bottom of the housing 1 is 4.5-5.5 mm, preferably 5 mm;

[0042] The distance between the wind wheel 2 and the wind shield 19 is 7-12 mm, preferably 9.5 mm.

[0043] In a preferred embodiment, the shell 1 includes a front cover 17 and a rear cover 18, the air supply grille 11 and the partition 15 are arranged on the front cover 17, the air inlet grille 12 is arranged on the rear cover 18, and the drive motor 3 is fixedly arranged on the rear cover 18; the front cover 17 is rotatably connected to the rear cover 18, and the rear cover 18 is provided with a shaking motor 4 for driving the front cover 17 to shake its head. The air supply angle of the fan can be adjusted by driving the front cover 17 to rotate by the shaking motor 4.

[0044] In a preferred embodiment, the cross sections of the partition plate 15 and the front cover 17 are both arc-shaped.

[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An eccentrically arranged long strip cross-flow fan, characterized in that: The invention comprises a housing (1) and a wind wheel (2), wherein the front side of the housing (1) is provided with an air supply grille (11), the rear side of the housing (1) is provided with an air inlet grille (12), the wind wheel (2) is arranged in the housing (1), and the housing (1) is provided with a driving motor (3) for driving the wind wheel (2) to rotate; An air inlet channel (13) is formed between the wind wheel (2) and the top of the shell (1), and an air outlet channel (14) is formed between the wind wheel (2) and the front side of the shell (1). A plurality of neatly arranged partitions (15) are provided on the air supply grille (11), and the partitions (15) separate the air supply grille (11) into a plurality of air supply ports (16). Air flows through the air inlet grille (12), the air inlet channel (13), the air outlet channel (14) and the air supply ports (16) in sequence.

2. The eccentrically arranged long strip cross-flow fan according to claim 1, characterized in that: The wind wheel (2) is eccentrically arranged in the housing (1).

3. The eccentrically arranged long strip cross-flow fan according to claim 2, characterized in that: The distance α between the central axis of the wind wheel (2) and the rear edge of the partition (15) is 48-55 mm.

4. The eccentrically arranged long strip cross-flow fan according to claim 3, characterized in that: The distance β between the central axis of the wind wheel (2) and the rear side wall of the housing (1) is 45-55 mm; The distance γ between the central axis of the wind wheel (2) and the front side wall of the housing (1) is 70-80 mm; The distance δ between the central axis of the wind wheel (2) and the inner side wall of the top of the housing (1) is 50-60 mm; The distance θ between the central axis of the wind wheel (2) and the inner side wall of the bottom of the housing (1) is 45-55 mm.

5. The eccentrically arranged long strip cross-flow fan according to claim 4, characterized in that: The radius of the wind wheel (2) is 43-45 mm.

6. The eccentrically arranged long strip cross-flow fan according to claim 5, characterized in that: A wind shield (19) is provided on the front side of the housing (1), and the wind shield (19) is located beside the air supply grille (11).

7. An eccentrically arranged long strip cross-flow fan as claimed in claim 6, characterized in that: The distance between the wind wheel (2) and the partition (15) is 5-10 mm; The distance between the wind wheel (2) and the air supply grille (11) is 30-40 mm; The distance between the wind wheel (2) and the inner side wall of the top of the housing (1) is 10.5-11.5 mm; The distance between the wind wheel (2) and the inner side wall of the bottom of the housing (1) is 4.5-5.5 mm; The distance between the wind wheel (2) and the wind shield (19) is 7-12 mm.

8. The eccentrically arranged long strip cross-flow fan according to claim 7, characterized in that: The housing (1) comprises a front cover (17) and a rear cover (18), the air supply grille (11) and the partition plate (15) are arranged on the front cover (17), the air inlet grille (12) is arranged on the rear cover (18), and the drive motor (3) is fixedly arranged on the rear cover (18); The front cover (17) is rotatably connected to the rear cover (18), and the rear cover (18) is provided with a shaking motor (4) for driving the front cover (17) to shake its head.

9. An eccentrically arranged long strip cross-flow fan as claimed in claim 8, characterized in that: The cross sections of the partition plate (15) and the front cover (17) are both arc-shaped.

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