阅读说明：本技术 一种气流剥离风机 (Air flow stripping fan ) 是由 刘毅 于 2020-04-23 设计创作，主要内容包括：本发明公开一种气流剥离风机,包括叶轮和风机壳体,叶轮的叶片上设置有剥离仓和导流管,剥离仓与导流管的进口连通；风机壳体包括外部壳体和整流圈,外部壳体和整流圈之间留有中空夹层,导流管的出口通入该中空夹层中,外部壳体上开设有排放口；该气流剥离风机上设置有进风口和出风口。该气流剥离风机,不仅具有已有风机升高风压排送气流的一般功能,它还能将含有杂质的入口气流分离成为两股气流；两股气流分别是从风机原出风口排出的稀相气流和从位于风机壳体排放口排出的浓相气流,含杂质的入口气流经过剥离处理后分类排放；既保留了风机作为流体机械的气流输送功能又具有气流分类和净化的附加功能。(The invention discloses an airflow stripping fan which comprises an impeller and a fan shell, wherein a stripping bin and a flow guide pipe are arranged on a blade of the impeller, and the stripping bin is communicated with an inlet of the flow guide pipe; the fan shell comprises an outer shell and a rectifying ring, a hollow interlayer is reserved between the outer shell and the rectifying ring, an outlet of the flow guide pipe is communicated into the hollow interlayer, and a discharge port is formed in the outer shell; the airflow stripping fan is provided with an air inlet and an air outlet. The airflow stripping fan not only has the general function of the existing fan for increasing the wind pressure and discharging airflow, but also can separate the inlet airflow containing impurities into two airflows; the two airflows are respectively dilute phase airflow discharged from an original air outlet of the fan and concentrated phase airflow discharged from a discharge port positioned in a fan shell, and the inlet airflow containing impurities is subjected to stripping treatment and then is discharged in a classified manner; the fan is reserved as the airflow conveying function of the fluid machine, and the fan has the additional functions of airflow classification and purification.)

1. The utility model provides an air current stripping fan which characterized in that: the peeling device comprises an impeller and a fan shell, wherein a peeling bin and a flow guide pipe are arranged on blades of the impeller, and the peeling bin is communicated with an inlet of the flow guide pipe; the fan shell comprises an outer shell and a rectifying ring, a hollow interlayer is reserved between the outer shell and the rectifying ring, an outlet of the flow guide pipe is communicated into the hollow interlayer, and the outer shell is provided with a discharge port; the airflow stripping fan is provided with an air inlet and an air outlet.

2. The airflow stripping fan as set forth in claim 1, characterized in that: blades are uniformly distributed on the circumference of the impeller, the edges of the windward sides of the blades are provided with the stripping bins and the flow guide pipes, and the stripping bins are used for receiving dense-phase air flow entering the fan from the air inlet.

3. The airflow stripping fan as set forth in claim 2, characterized in that: the peeling bin adopts a pore plate interlayer structure, a fish scale pore row structure or a hollow blade structure, and under the action of the rotating centrifugal force of the impeller, the peeling bin guides the received dense-phase airflow into the flow guide pipe.

4. The airflow stripping fan as set forth in claim 3, characterized in that: concentrated phase airflow in the draft tube is guided to a hollow interlayer between the outer shell and the rectifying ring, and the discharge port arranged on the outer shell is used for discharging the concentrated phase airflow.

5. The airflow stripping fan as set forth in claim 1, characterized in that: the air flow enters the fan from an air inlet at the lower part of the fan, the dilute phase air flow is discharged from an air outlet on the fan, and the concentrated phase air flow is discharged from a discharge port arranged on the shell of the fan; the air inlet and the air outlet are both circular, and the diameter of the air outlet is larger than that of the air inlet.

6. The airflow stripping fan as set forth in claim 1, characterized in that: the rectifying ring comprises an upper rectifying ring and a lower rectifying ring, and an annular gap is reserved between the upper rectifying ring and the lower rectifying ring.

7. The airflow stripping fan as set forth in claim 6, characterized in that: the annular gap between the upper rectifying ring and the lower rectifying ring reserves an unobstructed annular passage for the circular motion of the flow guide pipe, and the flow guide pipe discharges dense-phase airflow to the interlayer space of the shell in the rotating process.

Technical Field

The invention relates to the technical field of fans, in particular to an airflow stripping fan.

Background

The air purification technology mainly comprises the principle methods of cyclone separation, electrostatic adsorption, spray absorption, filtration and interception and the like. These methods all require extensive structural architecture support and all consume a significant amount of energy to overcome internal air resistance. In order to improve the purification efficiency, the wind speed and the wind quantity are required to be reduced passively or actively, and the general efficiency-cost ratio is not high. The existing various air purification technologies are difficult to overcome the contradiction between the purification efficiency and the consumption of energy materials.

For example: the filtering method is characterized in that air is purified by means of blocking and intercepting particle impurities by the filtering material, and the means for improving the filtering efficiency is to improve the density of the filtering material, namely passively improve the filtering resistance, reduce the wind speed and increase the power; another example is: the electrostatic adsorption method is to increase the sectional area of airflow channel, reduce airflow speed and increase the volume and weight of structure.

The existing air purification technology utilizes centrifugal force to separate impurities and is a cyclone separation technology, which is characterized by small wind resistance, large wind quantity, low separation quality and precision and capability of only meeting the application requirement of low air flow purification requirement, mainly because of low rotational flow speed and limited centrifugal effect. However, the rotating impeller, which is the source of the kinetic energy of the air flow, is very high in speed, and the flow velocity of the air flow on the surface of the blade, especially the air flow velocity reaching the edge of the blade, is the superposition of the mechanical speed linear velocity of the edge of the local impeller and the velocity of the fluid relative to the blade surface, or is the vector sum, and obviously the air flow velocity at the position is the instantaneous highest velocity in the air flow field, but the extremely high air flow velocity at the position and the inertial centrifugal separation effect generated by the extremely high air flow velocity are.

Meanwhile, the existing various traditional fans are composed of main components such as an impeller, a shell, an air inlet, an air outlet and the like, and the air quantity balance of the inlet and the outlet is equal in operation. The various fans do not have the type of combining the functions of the fans and the air flow purification function together.

Disclosure of Invention

The invention aims to provide an airflow stripping fan which not only has the hydrodynamic mechanical function of a common fan, but also has the function of stripping impurities; the air purifier realizes the combination of the functions of a fan and an air purifying mechanism, and solves the problems of high resistance, low efficiency and high energy consumption of the existing air purifying technology.

In order to achieve the purpose, the invention provides the following scheme: the invention provides an airflow stripping fan which comprises an impeller and a fan shell, wherein a stripping bin and a flow guide pipe are arranged on a blade of the impeller, and the stripping bin is communicated with an inlet of the flow guide pipe; the fan shell comprises an outer shell and a rectifying ring, a hollow interlayer is reserved between the outer shell and the rectifying ring, an outlet of the flow guide pipe is communicated into the hollow interlayer, and the outer shell is provided with a discharge port; the airflow stripping fan is provided with an air inlet and an air outlet.

Preferably, blades are uniformly distributed in the circumferential direction of the impeller, the edge of the windward side of each blade is provided with the stripping bin and the flow guide pipe, and the stripping bin is used for receiving dense-phase air flow entering the fan from the air inlet.

Preferably, the peeling chamber adopts a pore plate sandwich structure, a fish scale pore row structure or a hollow blade structure, and the peeling chamber guides the received dense-phase airflow into the flow guide pipe under the action of the rotating centrifugal force of the impeller.

Preferably, the dense-phase airflow in the draft tube is guided to a hollow interlayer between the outer shell and the rectifying ring, and the discharge port arranged on the outer shell is used for discharging the dense-phase airflow.

Preferably, the air flow enters the fan from an air inlet at the lower part of the fan, the dilute phase air flow is discharged from an air outlet on the fan, and the concentrated phase air flow is discharged from a discharge port on the shell of the fan; the air inlet and the air outlet are both circular, and the diameter of the air outlet is larger than that of the air inlet.

Preferably, the rectifying ring comprises an upper rectifying ring and a lower rectifying ring, and an annular gap is reserved between the upper rectifying ring and the lower rectifying ring.

Preferably, an annular gap between the upper rectifying ring and the lower rectifying ring leaves an unobstructed annular passage for the circular motion of the draft tube, and the draft tube discharges dense-phase airflow to the interlayer space of the shell in the rotating process.

Compared with the prior art, the invention has the following technical effects:

the airflow stripping fan has the general function of the existing fan for increasing wind pressure and discharging airflow, and can separate the inlet airflow containing impurities (the separation process is called stripping) into two airflows. The two air flows are respectively dilute phase air flow containing less impurities and discharged from an original air outlet of the fan and concentrated phase air flow containing more impurities and discharged from a discharge port of the fan shell. The airflow stripping fan not only retains the airflow conveying function of the fan as a fluid machine, but also has the additional functions of airflow classification and purification.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of an airflow stripping fan;

FIG. 2 is a three-dimensional perspective view of the impeller;

FIG. 3 is a three-dimensional schematic view of a fan casing;

wherein, 1 impeller; 2, an upper rectifying ring; 3, a lower rectifying ring; 4, a fan shell; 5, air inlet; 6, an air outlet; 7 a discharge port; 9 blades; 10 stripping the bin; 11 flow guide pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide an airflow stripping fan which not only has the hydrodynamic mechanical function of a common fan, but also has the function of stripping impurities; the air purifier realizes the combination of the functions of a fan and an air purifying mechanism, and solves the problems of high resistance, low efficiency and high energy consumption of the existing air purifying technology.

The airflow stripping fan comprises an impeller and a fan shell, wherein a stripping bin and a flow guide pipe are arranged on blades of the impeller, and the stripping bin is communicated with an inlet of the flow guide pipe; the fan shell comprises an outer shell and a rectifying ring, a hollow interlayer is reserved between the outer shell and the rectifying ring, an outlet of the flow guide pipe is communicated into the hollow interlayer, and a discharge port is formed in the outer shell; the airflow stripping fan is provided with an air inlet and an air outlet.

The stripping bin arranged on the blade of the impeller has the function of stripping impurities, and after the action of the stripping bin, the dense-phase airflow enters the interlayer of the outer shell along with the flow guide pipe and is discharged through the discharge port; and the dilute phase airflow is discharged from the air outlet of the fan above. The fan has the function of stripping impurities due to the arrangement of the stripping bin and the flow guide pipe, and simultaneously plays a role in air purification through stripping impurities, so that the technical problem to be solved by the invention is solved.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1 to 3, the present embodiment provides an airflow stripping fan, which is an embodiment of an airflow stripping fan modified on the basis of a volute-free backward-tilting centrifugal fan, and the airflow stripping fan includes an impeller 1 and a fan housing 4, a stripping bin 10 and a flow guide pipe 11 are arranged on a blade 9 of the impeller 1, and the stripping bin 10 is communicated with an inlet of the flow guide pipe 11; the fan shell 4 comprises an outer shell and a rectifying ring, a hollow interlayer is reserved between the outer shell and the rectifying ring, an outlet of the flow guide pipe 11 is communicated into the hollow interlayer, and the outer shell is provided with a discharge port 7; the air inlet 5 of the airflow stripping fan is positioned at the lower part of the fan, and the air outlet 6 is positioned at the upper part of the fan.

In this embodiment, the flow direction of the airflow is: the air flow enters the fan from an air inlet 5 at the lower part of the fan, dilute phase air flow is discharged from an air outlet 6 on the fan, and concentrated phase air flow is discharged from a discharge port 7 arranged on the shell of the fan; wherein, the air inlet 5 and the air outlet 6 are both circular, and the diameter of the air outlet 6 is larger than that of the air inlet 5.

In order to ensure that the impeller has the hydrodynamic mechanical function of a common fan and also has the function of stripping impurities, the blades 9 are uniformly distributed on the circumference of the impeller 1 of the airflow stripping fan in the embodiment, the edge of the windward side of each blade 9 is provided with a semi-open stripping bin 10 for collecting dense-phase airflow and a guide pipe 11 for guiding the dense-phase airflow, and the dense-phase airflow formed and distributed near the windward surface of each blade 9 of the impeller 1 rotating at high speed due to inertia is collected and guided into the interlayer of the fan shell 4 by the stripping bin 10 and the guide pipe 11.

In order to ensure that the dense-phase airflow in the stripping bin 10 and the draft tube 11 enters the interlayer of the fan shell 4, the shell of the airflow stripping fan in the embodiment is formed by an upper rectifying ring 2, a lower rectifying ring 3 and an outer shell. An annular gap is reserved between the upper rectifying ring 2 and the lower rectifying ring 3, an unobstructed annular passage is reserved for the circular motion of the flow guide pipe 11 by the annular gap, and the flow guide pipe 11 discharges dense-phase airflow to the interlayer space of the shell in the rotating process. The concentrated phase airflow is converged and then discharged out of the fan through a concentrated phase airflow discharge port 7. The lower round opening is an air inlet 5 of the fan, and the upper round opening with larger caliber is a dilute phase airflow discharge opening 7.

The airflow stripping fan is developed on the basis of the existing fan technology, and the airflow purification function is added in the function, so that the energy loss of an additional purification device is avoided, and the space occupation and the resource waste are reduced. Because it separates the dense phase air flow in the fan, and strips and purifies the air flow under the environment with extremely high flow density, the treatment flow and efficiency are also high. Existing air purification techniques, except cyclonic separation techniques, achieve the goal of purifying air either actively or passively at the expense of increased resistance and reduced flow rate. The invention achieves the aim of impurity separation by improving the mechanism of local wind speed. This provides conditions for developing a small volume and large flow air purification device. The airflow stripping fan effectively separates the dense-phase airflow and the dilute-phase airflow. The further air purification does not need to carry out deep treatment on all the inlet air, and only needs to carry out deep purification treatment on the concentrated phase airflow, so that the resources and the cost in all aspects are saved.

It should be noted that:

1. the flow guide pipeline for communicating the high-speed impeller flow field with the fan shell interlayer in the airflow stripping fan in the embodiment is indispensable, but the stripping bin responsible for receiving the dense-phase airflow can be in various forms, for example, a pore plate interlayer structure, a fish scale pore row structure or hollow blades and the like, the addition of porous adsorption filler and the like is a means for improving adsorption and stripping effects, even a piece of sponge is attached, the adsorption capacity of liquid particles can be improved, and the application can be flexible. The application of these means according to the actual requirements is also within the scope of protection of the present invention.

2. The blades of the fan impeller have various forms, and theoretically, each impeller blade can be transformed into the impeller blade of the stripping fan, because the surface of the impeller blade of each fan has relative airflow movement and dense phase airflow distribution formed by airflow inertia. The impeller blade of the airflow stripping fan can be reformed by arranging the stripping bin and the guide pipeline at the specific edge position where concentrated dense-phase airflow appears.

3. The stripped dense phase airflow can be accelerated and led out by a negative pressure speed regulating fan, and can be further treated by other air purification means such as subsequent filtration and the like. But this is within the scope of the conventional art and should be protected as well.

4. The shell of the airflow stripping fan is mainly characterized in that an outer shell is added outside a rectifying ring shell which plays a rectifying role of a traditional fan, and an interlayer formed between the rectifying ring and the outer shell is a dense-phase airflow guiding channel. The complete rectifying ring of the original fan is divided into an upper part and a lower part, and a circular seam formed between the upper rectifying ring and the lower rectifying ring is a rotating space of the flow guide pipe.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.