CN220227177U - Novel positive displacement fan - Google Patents

Abstract

The utility model discloses a novel positive displacement fan, which comprises: the device comprises a cylinder body, a bearing, a rotor, a blade, a sliding pin and a spring; the inside cavity of cylinder body forms the air chamber, is equipped with air intake and air outlet on the cylinder body, and air intake and air outlet all communicate with the air chamber, and the bearing is fixed to be located in the air chamber, and the bearing is located to the rotor is eccentric, is equipped with the multiunit along the radial mounting groove of arranging relatively of rotor on the rotor, all is equipped with blade, sliding pin and spring in every mounting groove, and wherein, the blade is located the outside, and the spring is located the inboard, and the one end of sliding pin links to each other with the spring, and the other end then with blade butt, and under the effect of spring, the sliding pin outwards pushes the blade to the inner circle butt with the bearing. When the eccentric rotor in the scheme rotates, the inner ring of the bearing can rotate along with the blades on the eccentric rotor, and the blades are not contacted with the cylinder body, so that the positive displacement fan has the advantages of high rotating speed, small friction, high pressure, large air quantity, small noise, long service life, low temperature and the like.

Description

Novel positive displacement fan

Technical Field

The utility model relates to the field of positive displacement fans, in particular to a novel positive displacement fan.

Background

A positive displacement fan is a fan that generates an airflow through a change in volume. It generally consists of one or more cavities of varying volume and a drive mechanism, which generates an air flow when the cavity volume changes. The positive displacement fans may be classified into different types according to the shape and volume change of the cavity, for example, the sliding vane type fan shown in fig. 1-2 is one type of positive displacement fan.

The rotor of the sliding vane type fan is a segregation rotor, 4 sliding vanes are generally inlaid on the rotor, under the action of a spring on the rotor, the vanes are abutted against the inner wall of the cylinder body, at the moment, the rotor and 4 sliding vanes embedded in the rotor form 4 spaces with unequal volumes with the inner wall of the cylinder body, in the running process of the sliding vane type fan, the sliding vanes move along the inner wall of the cylinder body to suck, compress and discharge air, in the process, the vanes are in direct contact with the cylinder body, so that the friction surface is large, high temperature and abnormal sound are easy to generate, the vanes and the cylinder body are easy to wear, the service life is short, and optimization and improvement are needed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, a first object of the present utility model is to provide a new positive displacement fan.

The technical scheme of the utility model is as follows: a novel positive displacement fan, characterized in that includes: the device comprises a cylinder body, a bearing, a rotor, a blade, a sliding pin and a spring;

the inside cavity of cylinder body forms the air chamber, be equipped with air intake and air outlet on the cylinder body, air intake and air outlet all with the air chamber intercommunication, the bearing is fixed to be located in the air chamber, the rotor is located eccentrically in the bearing, be equipped with the multiunit on the rotor and follow the radial mounting groove of arranging relatively of rotor, every all be equipped with in the mounting groove blade, sliding pin and spring, wherein, the blade is located the outside, the spring is located the inboard, the one end of sliding pin with the spring links to each other, the other end then with blade butt, and under the effect of spring, the sliding pin will the blade outwards push to with the inner circle butt of bearing.

Further, the axial length of the bearing inner ring is smaller than the axial length of the bearing outer ring.

Compared with the prior art, the utility model has the following beneficial effects:

different from the structural form that the blade is in direct contact with the cylinder body in the existing positive displacement fan, the bearing is arranged in the air chamber of the cylinder body, the blade on the eccentric rotor is abutted with the inner ring of the bearing under the action of the spring, so that when the eccentric rotor rotates, the inner ring of the bearing can rotate along with the blade on the eccentric rotor, and the blade is not in contact with the cylinder body any more, and therefore the positive displacement fan has the advantages of being high in rotating speed, small in friction, high in pressure, large in air quantity, small in noise, long in service life, low in temperature and the like.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

For a clearer description of embodiments of the utility model or of solutions in the prior art, the drawings that are required to be used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained, without the inventive effort, by a person skilled in the art from these drawings:

FIG. 1 is a schematic view of the interior of a cylinder of a positive displacement fan of the prior art;

FIG. 2 is a cross-sectional view of the interior of a cylinder of a positive displacement fan of the prior art;

FIG. 3 is a schematic view of the interior of the cylinder of the positive displacement blower of the present embodiment;

fig. 4 is a cross-sectional view of the interior of the cylinder of the positive displacement blower of the present embodiment.

The reference numerals are as follows:

1. a cylinder; 2. a bearing; 3. a rotor; 4. a blade; 5. a sliding pin; 6. a spring; 7. a gas chamber; 8. an air inlet; 9. and an air outlet.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

A novel positive displacement blower as shown in fig. 3-4, comprising: cylinder 1, bearing 2, rotor 3, vane 4, sliding pin 5 and spring 6.

The inside cavity of cylinder body 1 forms air chamber 7, be equipped with air intake 8 and air outlet 9 on the cylinder body 1, air intake 8 and air outlet 9 all communicate with air chamber 7, the bearing 2 is fixed to be located in air chamber 7, rotor 3 eccentric locate in the bearing 2, be equipped with the multiunit along the radial relative mounting groove of arranging of rotor 3 on the rotor 3, all be equipped with blade 4 in every mounting groove, slide pin 5 and spring 6, wherein, blade 4 is located the outside, spring 6 is located the inboard, slide pin 5's one end links to each other with spring 6, the other end then with blade 4 butt, and under spring 6's effect, slide pin 5 outwards pushes blade 4 to the inner circle butt with bearing 2.

Further, the axial length of the inner ring of the bearing 2 is smaller than the axial length of the outer ring of the bearing 2.

Specifically, different from the structural form that the blade 4 and the cylinder body 1 are in direct contact in the existing positive displacement fan, the bearing 2 is arranged in the air chamber 7 of the cylinder body 1, the blade 4 on the eccentric rotor 3 is abutted with the inner ring of the bearing 2 under the action of the spring 6, so that when the eccentric rotor 3 rotates, the inner ring of the bearing 2 can rotate along with the blade 4 on the eccentric rotor 3, and the blade 4 is not in contact with the cylinder body 1, so that the positive displacement fan has the advantages of high rotating speed, small friction, high pressure, large air quantity, low noise, long service life, low temperature and the like.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (2)

1. A novel positive displacement fan, characterized in that includes: the device comprises a cylinder body, a bearing, a rotor, a blade, a sliding pin and a spring;

the inside cavity of cylinder body forms the air chamber, be equipped with air intake and air outlet on the cylinder body, air intake and air outlet all with the air chamber intercommunication, the bearing is fixed to be located in the air chamber, the rotor is located eccentrically in the bearing, be equipped with the multiunit on the rotor and follow the radial mounting groove of arranging relatively of rotor, every all be equipped with in the mounting groove blade, sliding pin and spring, wherein, the blade is located the outside, the spring is located the inboard, the one end of sliding pin with the spring links to each other, the other end then with blade butt, and under the effect of spring, the sliding pin will the blade outwards push to with the inner circle butt of bearing.

2. The novel positive-displacement wind turbine of claim 1, wherein the axial length of the bearing inner race is less than the axial length of the bearing outer race.