Pressure equalizing fan

Abstract

The utility model discloses a pressure equalizing fan which comprises a fan body, fan blades, an air outlet and an air duct. Fan blades are rotatably arranged in the fan main body, and the fan blades rotate to drive air in the fan volute to do centrifugal motion, so that wind energy is formed; an air outlet is formed in the upper side of the fan main body, and an air duct is formed in the air outlet; wind formed in the volute can be blown out from the air duct; the air channel is composed of a plurality of independent cavities, and the lengths of the cavities are different. In the air outlet of the fan, the air duct is divided into a plurality of independent air duct cavities by the partition plates, the lengths of the air duct cavities are increased row by row from bottom to top, and the air duct cavities with different lengths are formed to divide the amount of air entering different subsequent air ducts, so that the air pressure at the air outlet is consistent. The centrifugal fan solves the problem that the pressure of output air of an air duct of an air outlet of an existing centrifugal fan is not uniform.

Description

Technical Field

[0001] The utility model belongs to the technical field of fan equipment, and particularly relates to an equalizing fan. Background Art

[0002] A fan is a mechanical device that converts mechanical energy into air kinetic energy. Fans are classified into centrifugal fans, axial fans, mixed-flow fans, and diagonal-flow fans according to different working principles. Among them, a centrifugal fan is also called a centrifugal ventilator, and its working principle is mainly to make the gas generate high pressure and high speed under the action of centrifugal force through the rotation of the impeller rotor, so as to generate air flow and pressure.

[0003] The wind energy formed by the centrifugal fan is blown out from the air outlet. The air outlet is a single-chamber air duct. When the air makes a centrifugal movement in the volute of the fan and is blown out from the air outlet, the gas tends to flow out concentrated on the outer side of the air outlet duct; this will cause the wind pressure at the air outlet to be uneven, and the wind pressure around is significantly higher than the wind pressure at the center. Content of the Utility Model

[0004] The utility model provides an equalizing fan. Inside the air outlet of the fan, the air duct is divided into several independent air duct cavities by a partition board, and the length of the air duct cavities increases row by row from bottom to top. By forming air duct cavities with length differences, the amount of air entering subsequent different air ducts is divided, so as to achieve uniform wind pressure at the air outlet. The utility model solves the problem that the wind pressure of the air outlet duct of the current centrifugal fan is uneven.

[0005] In order to achieve the above technical purpose, the utility model is realized through the following technical solutions:

[0006] An equalizing fan includes: a fan main body, a fan blade, an air outlet, and an air duct;

[0007] The fan blade is rotatably arranged inside the fan main body, and the rotation of the fan blade drives the air in the fan volute to make a centrifugal movement to form wind energy;

[0008] The air outlet is arranged on the upper side of the fan main body, and an air duct is formed inside the air outlet; the wind energy formed in the volute is blown out through the air duct;

[0009] The air duct is composed of a number of independent cavities formed by partition boards, and the lengths of the cavities are different.

[0010] Preferably, the lengths of the cavities in the same row in the air duct are equal, and the lengths of the cavities increase row by row from bottom to top. The cavities with increasing lengths row by row divide the amount of air entering subsequent different cavities, so as to achieve uniform wind pressure at the air outlet.

[0011] Preferably, the cavity is divided by a horizontal partition board and is divided into at least three cavities at equal intervals from bottom to top.

[0012] Preferably, the cavity is cross-divided by a horizontal partition and a vertical partition, and is divided into at least four cavities.

[0013] Preferably, the partition is detachably installed in the air duct to form a cavity.

[0014] Preferably, slots and inserts are equidistantly arranged on the inner wall of the air duct respectively; slots and inserts are arranged on the sides of the horizontal partition and the vertical partition; inserts and slots are respectively arranged on the upper and lower surfaces on the right side of the horizontal partition; the horizontal partition and the vertical partition have different lengths. By correspondingly plugging and combining the horizontal partition and the vertical partition in the air duct, cavities with different cavity sizes can be formed.

[0015] Preferably, an air inlet is arranged on the side of the fan main body.

[0016] Preferably, a base is arranged on the lower side of the fan main body.

[0017] The beneficial effects of the present utility model are as follows:

[0018] Using an equalizing fan provided by the present utility model, in the air duct at its air outlet, the air duct is divided into cavities with gradually increasing lengths by horizontal and vertical partitions with different lengths, and the wind energy formed in the fan volute is divided by these cavities, so that the wind energy entering each cavity is equal, and finally the wind energy pressure output from the air outlet is uniform. It avoids the concentration of wind energy on the outer side of the air duct for output. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 It is a side sectional view of the present utility model;

[0021] Figure 2 It is a three-dimensional view of the present utility model;

[0022] Figure 3 It is a schematic diagram of the cavity structure of Embodiment 2 of the present utility model;

[0023] Figure 4 It is a schematic diagram of the cavity structure of Embodiment 3 of the present utility model;

[0024] Figure 5 It is a schematic diagram of the slot and insert structure in the air duct of the present utility model;

[0025] Figure 6 It is a schematic diagram of the horizontal partition structure of the present utility model;

[0026] Figure 7 It is a schematic diagram of the vertical partition structure of the present utility model;

[0027] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0028] 1 - blower main body, 101 - base, 102 - air inlet, 2 - fan blade, 3 - air outlet, 4 - partition, 401 - horizontal partition, 4011 - insertion strip, 4012 - slot, 402 - vertical partition, 5 - air duct. Specific embodiments

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0030] Embodiment 1

[0031] Refer to Figure 1 As shown, a pressure equalizing blower includes: blower main body 1, fan blade 2, air outlet 3, and air duct 5;

[0032] An air inlet 102 is arranged on the side of the blower main body 1, and a base 101 is arranged on the lower side of the blower main body 1. A fan blade 2 is rotatably arranged inside the blower main body 1, and the rotation of the fan blade 2 drives the air in the blower volute to perform centrifugal motion to form wind energy;

[0033] An air outlet 3 is arranged on the upper side of the blower main body 1, an air duct 5 is formed in the air outlet 3, and a plurality of independent cavities are formed by a partition 4 in the air duct 5. The lengths of the cavities in the same row are equal, but the lengths of the cavities increase row by row from bottom to top; the wind energy formed in the volute enters the cavities and is output from the air outlet 3;

[0034] The cavities with increasing lengths row by row divide the amount of air entering the subsequent different cavities, so as to achieve consistent air pressure at the air outlet 3.

[0035] Embodiment 2

[0036] Refer to Figure 3 As shown, based on Embodiment 1, the cavity is divided by two horizontal partitions 401 and is specifically divided into three cavities at equal intervals from bottom to top. The lengths of the three cavities still increase row by row from bottom to top. Each cavity divides the amount of wind energy air in one level.

[0037] Embodiment 3

[0038] Refer to Figure 4As shown, based on Embodiment 1, the cavity is cross-divided by two horizontal partitions 401 and two vertical partitions 402, and is divided into a total of nine cavities. The length of the cavity still increases row by row from bottom to top. Based on the wind energy air volume corresponding to the three cavities at the corresponding levels, further refinement and division are carried out on each layer to make the final wind pressure more uniform.

[0039] Embodiment 4

[0040] Refer to Figures 5 - 6 As shown, based on Embodiment 1, the partition 4 is detachably installed in the air duct 5 to form a cavity.

[0041] Slots 4012 and inserts 4011 are respectively arranged at equal intervals on the inner wall of the air duct 5; slots 4012 and inserts 4011 are arranged on the sides of the horizontal partition 401 and the vertical partition 402; inserts 4011 and slots 4012 are respectively arranged on the upper and lower surfaces on the right side of the horizontal partition 401;

[0042] The horizontal partition 401 and the vertical partition 402 are set to have different lengths, corresponding to dividing cavities of different lengths;

[0043] The horizontal partition 401 and the vertical partition 402 are correspondingly plugged and combined in the air duct 5, and the horizontal partition 401 and the vertical rod plate 402 are freely combined, and cavities with different gap sizes can be formed according to needs.

[0044] In the description of this specification, the description referring to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A pressure equalizing fan, comprising: Fan body (1), fan blades (2), air outlet (3), air duct (5); The fan body (1) is provided with fan blades (2) for rotation, and the rotation of the fan blades (2) drives the air in the fan volute to perform centrifugal motion, thereby generating wind energy; An air outlet (3) is arranged on the upper side of the fan body (1), and an air duct (5) is formed in the air outlet (3); wind energy formed in the volute is blown out through the air duct (5); The feature is that a plurality of independent cavities are formed by the partition plate (4) in the air duct (5), and the lengths of the cavities are different; The partition plate (4) is detachably installed in the air duct (5) to form a cavity; Slots (4012) and inserts (4011) are arranged at equal intervals on the inner wall of the air duct (5); slots (4012) and inserts (4011) are arranged on the sides of the transverse partition (401) and the vertical partition (402); the inserts (4011) and slots (4012) are arranged on the upper and lower sides of the right side of the transverse partition (401); the transverse partition (401) and the vertical partition (402) are arranged with different lengths; the transverse partition (401) and the vertical partition (402) are correspondingly plugged and assembled in the air duct (5) to form cavities with different cavity sizes.

2. A pressure equalizing fan according to claim 1, characterized in that: The lengths of cavities in the same row in the air duct (5) are equal, and the lengths of the cavities increase row by row from bottom to top.

3. A pressure equalizing fan according to claim 2, characterized in that: The cavity is divided by a transverse partition (401), and is divided into at least three cavities at equal intervals from bottom to top.

4. A pressure equalizing fan according to claim 2, characterized in that: The cavity is divided by the cross-section of the transverse partition (401) and the vertical partition (402), and is divided into at least four cavities.

5. A pressure equalizing fan according to any one of claims 1 to 4, characterized in that: An air inlet (102) is arranged on the side of the fan body (1).

6. A pressure equalizing fan according to any one of claims 1 to 4, characterized in that: A base (101) is provided on the lower side of the fan body (1).

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