WO2016106468A1

WO2016106468A1 - Composite fan and compressor having same

Info

Publication number: WO2016106468A1
Application number: PCT/CN2014/001185
Authority: WO
Inventors: 陈君立; 阮勤江; 耿爱农
Original assignee: 浙江鸿友压缩机制造有限公司
Priority date: 2014-12-29
Filing date: 2014-12-29
Publication date: 2016-07-07

Abstract

A composite fan, comprising radial flow blades (1) and axial flow blades (2). The radial flow blades (1) can generate a radial airflow while rotating, and the axial flow blades (2) can generate an axial airflow while rotating. Also disclosed is a compressor having the fan. The compressor is provided with an air deflector (5). The air deflector (5) is used for guiding the airflow generated by the radial flow blades (1) to a cylinder head (3) of the compressor.

Description

Composite fan and compressor with the same

Technical field

The invention belongs to the technical field of compressors, and relates to a structure of a cooling fan, in particular to a composite fan structure fan having the properties of a centrifugal fan and an axial fan, and a compressor with the same.

Background technique

The existing fan is mainly in the form of an axial flow structure and a centrifugal structure. The former uses a rotating axial flow vane to generate an axial flow mainly flowing in the direction of the fan rotation axis, and the latter uses a rotating radial vane to generate a main along the diameter. Centrifugal airflow flowing in the direction.

In some cases, however, it is often desirable to have a fan that produces both axial and radial airflow. For example, an oil-free air compressor needs to simultaneously cool the cylinder head of the cylinder head and the main bearing supporting the crankshaft. Since the cylinder head is generally disposed beside the side deviating from the rotary axis of the compressor, a centrifugal fan is required to generate a radial airflow. To the component to cool it, and since the main bearing is typically fitted over the crankshaft of the compressor, the fan is required to generate axial airflow to cool the main bearing. Obviously, the traditional centrifugal fan or axial fan can not meet the above requirements.

Summary of the invention

In view of the deficiencies of existing cooling fans and compressors having such cooling fans, the present invention provides a composite fan for the purpose of reliably generating both radial and axial airflows simultaneously; the present invention also provides the composite The purpose of the compressor of the fan is to simultaneously cool the cylinder head of the compressor and the main bearing of the compressor, thereby effectively improving the operational reliability of the compressor.

In order to achieve the above object, the present invention provides a composite fan, characterized in that the fan is provided with a radial flow vane and an axial flow vane, and the radial flow vane can generate a radial air flow when the radial flow vane rotates, the axial flow vane Axial airflow can be derived when rotating.

An isolation ring belt is disposed between the radial flow blade and the axial flow blade. The radial flow blade is arranged on the outer side of the isolation ring belt along the circumferential direction of the fan, and the axial flow blade is arranged on the inner side of the isolation ring belt along the circumferential direction of the fan.

The runoff blades are arranged in a dislocation relative to the axial flow vanes in the direction of the axis of rotation of the fan.

The above axial flow vanes are constructed of radial flow vanes and combined with an isolating belt to form an axial flow fan.

In order to achieve the above object, the present invention also provides a compressor with a composite fan, characterized in that the compressor is provided with a flow guide, which guides the airflow generated by the composite fan radial blade to the cylinder head of the compressor Part.

The composite fan and the compressor with the same according to the present invention can simultaneously generate a centrifugal radial airflow and an axial flow axial airflow by adopting a structure in which a radial flow blade and an axial flow blade are combined, thereby The cylinder head and main bearing of the compressor can be effectively cooled at the same time to ensure the reliability of the compressor.

DRAWINGS

1 is a perspective view of an embodiment of a composite fan of the present invention;

Figure 2 is a perspective view of the other direction of the composite fan of the present invention shown in Figure 1;

Figure 3 is an axial direction view of a composite fan of the present invention shown in Figure 1;

Figure 4 is a cross-sectional view of the composite fan of the present invention shown in Figure 1;

Figure 5 is a perspective view of another embodiment of a composite fan of the present invention;

Figure 6 is a perspective view showing another direction of the composite fan of the present invention shown in Figure 5;

Figure 7 is an axial direction view of a composite fan of the present invention shown in Figure 5;

Figure 8 is a cross-sectional view of the composite fan of the present invention shown in Figure 5;

Figure 9 is a schematic view showing the structure of a compressor with a composite fan of the present invention.

detailed description

The present invention is further described below by way of specific embodiments, see Figures 1-9:

A composite fan is different from the existing fan in that the fan is provided with a radial blade 1 and an axial flow blade 2 (as shown in FIGS. 1 to 9), and the radial blade 1 can be centrifugally generated when rotated. The radial air flow, when the axial flow vane 2 rotates, can derive an axial flow of axial flow. Since the fan of the present invention adopts a structure in which the radial flow blade 1 and the axial flow blade 2 are combined, it is possible to simultaneously generate a centrifugal radial airflow A and an axial flow axial airflow B (as shown in FIG. 9), so that it can simultaneously The cylinder head 3 (shown in Figure 9) of the compressor and the main bearing (not shown) are effectively cooled to ensure the operational reliability of the compressor.

In order to prevent airflow from interfering with each other, the fan of the present invention may provide an isolating ring belt 4 between the radial flow blade 1 and the axial flow blade 2 (see FIGS. 1 to 9), wherein the radial flow blade 1 is looped around the isolating ring in the circumferential direction of the fan. The outer side of the belt 4, the axial flow vane 2 is looped on the inner side of the isolating ring belt 4 in the circumferential direction of the fan, so that the mutual interference of the airflows derived from the two types of blades can be minimized; it should be noted that And adjusting the layout position and orientation posture of the isolation ring belt, the flow ratio of the radial airflow A and the axial airflow B can be adjusted as needed.

For the flexibility of the layout, the radial flow vane 1 of the present invention may have a misaligned layout with respect to the axial flow vane 2 in the direction of the fan rotation axis O, that is, the set of the rotary planes of all the constituent elements of the radial flow vane 1 and the rotation of all the constituent elements of the axial flow vane 2 The set of planes may be unequal, in other words there is a position where the axial direction does not overlap, or the projection of the radial blade 1 on the axis of rotation O of the fan does not coincide with the projection of the axial blade 2 on the axis of rotation O of the fan. Phenomenon; of course, the projection of the radial blade 1 and the axial blade 2 on the axis of rotation O of the fan can also be completely coincident or completely identical.

In order to simplify the structure, the axial flow vane 2 of the fan of the present invention can be constructed in the form of a radial flow vane 1 and combined with the isolator annulus 4 into an axial flow fan (see Figs. 5 to 8), at which time the axial flow vane 2 rotates. At this time, it will generate a centrifugal airflow which is converted into an axial flow under the guidance of the isolating annulus 4; it should be noted that the axial flow vane 2 may be part of the configuration of the radial flow vane 1 (see Figs. 5 to 8). ).

The present invention also provides a compressor with a composite fan (shown in FIG. 9), characterized in that the compressor is provided with a flow guide 5 which will have a radial direction generated by the composite fan radial blade 1 The air flow A is directed to the cylinder head 3 of the compressor and the portion is cooled, while the axial flow vane 2 of the composite fan produces an axial flow axial flow B and is directed to the main bearing of the compressor, thereby The main bearing gets enough cooling.

A composite fan and a compressor with the same according to the present invention are capable of simultaneously generating a centrifugal radial airflow A and an axial flow axial airflow by adopting a configuration in which a radial flow blade 1 and an axial flow blade 2 are combined. B. According to this, the cylinder head 3 and the main bearing of the compressor can be effectively cooled at the same time to ensure the working reliability of the compressor, and the composite fan is driven by the power shaft of the compressor.

The above embodiments are only a few preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, various equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered. Within the scope of protection of the invention.

Claims

A composite fan is characterized in that: the fan is provided with a radial flow vane and an axial flow vane, and the radial flow vane can derive a radial air flow when the radial flow vane rotates, and the axial flow airflow can be derived when the axial flow vane rotates.
The composite fan according to claim 1, wherein an isolation ring is disposed between the radial flow blade and the axial flow blade, and the radial flow blade is arranged on the outer side of the isolation ring along the circumferential direction of the fan. The axial flow vanes are looped on the inner side of the spacer band along the circumferential direction of the fan.
The composite fan according to claim 2, wherein the radial flow vane is arranged in a dislocation relative to the axial flow vane in the direction of the rotation axis of the fan.
The composite fan according to any one of claims 1 to 3, characterized in that the axial flow vane adopts a radial flow vane structure and is combined with the isolator belt to form an axial flow fan.
A compressor with a composite fan, characterized in that the compressor is provided with a shroud that directs the airflow generated by the composite fan runner blades to the cylinder head portion of the compressor.