Fan structure with good drainage effect

Abstract

A fan structure with a good drainage effect comprises a motor, a flow guide ring, an impeller and an end cover, the flow guide ring sleeves an outer ring of an output shaft of the motor, the impeller is fixedly arranged on the output shaft of the motor, the end cover covers the outer ring of the flow guide ring, an opening is formed in the center of the top of the end cover, an inner ring of the opening is folded outwards to form a step face, and an inner ring of the step face is folded outwards to form a horn-shaped supporting ring; the section of the flow guide cover is of a 7-shaped structure, the flow guide cover comprises a horizontal section and an inclined section, the horizontal section is attached to the step surface, and the inclined section is attached to the supporting ring; and the sealing ring is arranged on the horizontal section and is matched with the side wall of the step surface. According to the scheme, the supporting ring folded outwards is arranged at the opening of the end cover and used for supporting and fixing the flow guide cover, the situation that the flow guide structure is fixed to the inner ring of the opening or the opening is directly folded inwards to form the flow guide structure, the inner diameter of the opening is reduced, and then the air inlet effect is affected is avoided, and compared with the prior art, the air inlet amount is large, and the drainage effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan structure with good drainage effect. Background Art

[0002] At present, fans are used in vacuum cleaners or floor scrubbers. Fans are usually composed of a motor, a guide ring, an impeller, and a guide cover. The impeller is fixed on the motor shaft and driven to rotate by the motor. The guide ring is fixed on the motor and located between the motor and the impeller. The end cover is covered on the impeller and the guide ring. The motor drives the impeller to rotate to generate suction, sucking the airflow from the top opening of the end cover and discharging it through the guide ring.

[0003] At present, the opening of the end cover is mostly formed by folding the inner circle inward to form a straight tube or embedded trumpet-shaped guide structure. Among them, the straight tube-shaped guide structure has a poor guide effect, and the embedded trumpet-shaped guide structure has the problem of sacrificing the diameter of the air inlet, thereby affecting the flow rate.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to design a fan structure with good drainage effect to solve the above problems. Utility Model Content

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the utility model aims to provide a fan structure with good drainage effect.

[0006] To achieve the above-mentioned purpose and other related purposes, the technical solution provided by the utility model is: a fan structure with good drainage effect, including a motor, a guide ring, an impeller and an end cover, the guide ring is sleeved on the outer ring of the output shaft of the motor and is fixedly connected to the housing of the motor, the impeller is fixedly arranged on the output shaft of the motor and is driven to rotate by the motor, the end cover is arranged on the outer ring of the guide ring and is fixedly connected to the housing of the motor, an opening is arranged at the center of the top of the end cover, the inner ring of the opening is folded outward to form a step surface, and the inner ring of the step surface is folded outward to form a trumpet-shaped support ring; it also includes a guide cover, the cross-section of the guide cover is a "7"-shaped structure, and includes a horizontal section and an inclined section, the horizontal section is attached to the step surface, and the inclined section is attached to the inner wall of the support ring; it also includes a sealing ring, the sealing ring is arranged on the top side of the horizontal section and is fitted with the side wall of the step surface.

[0007] The preferred technical solution is that the inner ring of the sealing ring and the inner ring of the inclined section are arranged correspondingly.

[0008] A preferred technical solution is: an outer ring of the inclined section is provided with an annular groove corresponding to and matching the support ring, and the support ring is embedded in the annular groove.

[0009] The preferred technical solution is: the end cover is sleeved on one end of the casing and fixed by bolts.

[0010] Due to the application of the above technical solution, the utility model has the following beneficial effects:

[0011] The utility model proposes a fan structure with good drainage effect, which provides an outward-folded support ring at the opening of the end cover to support and fix the air guide cover, thereby avoiding fixing the air guide structure in the inner circle of the opening, or directly folding the opening inward to form the air guide structure, so that the inner diameter of the opening becomes smaller, thereby affecting the air intake effect. Compared with the prior art, this solution has the advantages of large air intake volume and good drainage effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional view of the fan involved in the utility model.

[0013] Figure 2 for Figure 1 An enlarged schematic diagram of . DETAILED DESCRIPTION

[0014] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0015] See also Figure 1-Figure 2 . It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] Example:

[0018] like Figure 1 to Figure 2 As shown, according to an overall technical concept of the utility model, a fan structure with good drainage effect is provided, including a motor 1, a guide ring 2, an impeller 3 and an end cover 4, the guide ring 2 is sleeved on the outer ring of the output shaft of the motor 1 and fixedly connected to the housing of the motor 1, the impeller 3 is fixedly arranged on the output shaft of the motor 1 and driven to rotate by the motor 1, the end cover 4 is covered on the outer ring of the guide ring 2 and fixedly connected to the housing of the motor 1, an opening is provided at the center of the top of the end cover 4, the inner ring of the opening is folded outward to form a step surface 41, and the inner ring of the step surface 41 is folded outward to form a trumpet-shaped support ring 42; it also includes a guide cover 5, the cross-section of the guide cover 5 is a "7"-shaped structure, and includes a horizontal section 51 and an inclined section 52, the horizontal section 51 is attached to the step surface 41, and the inclined section 52 is attached to the inner wall of the support ring 42; it also includes a sealing ring 6, the sealing ring 6 is arranged on the top side of the horizontal section 51 and is fitted with the side wall of the step surface 41.

[0019] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present utility model, the inner ring of the sealing ring 6 and the inner ring of the inclined section 52 are correspondingly arranged.

[0020] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the outer ring of the inclined section 52 is provided with an annular groove 521 corresponding to and matching the support ring 42 , and the support ring 42 is embedded in the annular groove 521 .

[0021] like Figure 1 to Figure 2 As shown, in an exemplary embodiment of the present invention, the end cover 4 is sleeved on one end of the casing 1 and fixed by bolts.

[0022] Therefore, the utility model has the following advantages:

[0023] The utility model proposes a fan structure with good drainage effect, which provides an outward-folded support ring at the opening of the end cover to support and fix the air guide cover, thereby avoiding fixing the air guide structure in the inner circle of the opening, or directly folding the opening inward to form the air guide structure, so that the inner diameter of the opening becomes smaller, thereby affecting the air intake effect. Compared with the prior art, this solution has the advantages of large air intake volume and good drainage effect.

[0024] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A fan structure with good drainage effect, comprising a motor, a guide ring, an impeller and an end cover, wherein the guide ring is sleeved on the outer ring of the output shaft of the motor and is fixedly connected to the housing of the motor, the impeller is fixedly arranged on the output shaft of the motor and driven to rotate by the motor, and the end cover is covered on the outer ring of the guide ring and is fixedly connected to the housing of the motor, characterized in that: An opening is provided at the center of the top of the end cover, the inner circle of the opening is folded outward to form a step surface, and the inner circle of the step surface is folded outward to form a trumpet-shaped support ring; it also includes a deflector, the cross-section of the deflector is a "7"-shaped structure, and includes a horizontal section and an inclined section, the horizontal section is attached to the step surface, and the inclined section is attached to the inner wall of the support ring; it also includes a sealing ring, which is arranged on the top side of the horizontal section and fits with the side wall of the step surface.

2. A fan structure with good drainage effect according to claim 1, characterized in that: The inner ring of the sealing ring and the inner ring of the inclined section are arranged correspondingly.

3. A fan structure with good drainage effect according to claim 1, characterized in that: The outer ring of the inclined section is provided with an annular groove corresponding to and matching the support ring, and the support ring is embedded in the annular groove.

4. A fan structure with good drainage effect according to claim 1, characterized in that: The end cover is sleeved on one end of the casing and fixed by bolts.

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