Evaporative fan centrifugal impeller for cold chain equipment

Abstract

The utility model discloses a cold chain equipment evaporative fan centrifugal impeller, including impeller base, a plurality of impeller blades are annular equidistance and set up on the impeller base, the ring cover is set between a plurality of impeller blades, the utility model is equipped with the ring cover between a plurality of impeller blades, is set up the ring cover at centrifugal impeller open end, when the air inlet comes from the air of impeller blade end face, the wind does work through the trajectory of impeller blade, accelerates through the blade trajectory of impeller blade, and the ring cover can reduce the interference of the flow along the radial direction of impeller end face, and provide the kinetic energy of wind force, reduce the volume loss of impeller blade, thereby promote the air volume and the wind pressure of centrifugal impeller, improve the performance of cold chain equipment evaporative fan centrifugal impeller.

Description

Technical Field

[0001] This utility model belongs to the field of fan impeller technology, specifically relating to a centrifugal impeller for an evaporator fan in cold chain equipment. Background Technology

[0002] The centrifugal impeller of the evaporator fan in cold chain equipment is a core functional component that is used in conjunction with the evaporator fan in cold chain equipment (such as cold storage, refrigerated display cases, refrigerated trucks, commercial refrigerators, etc.). It is essentially an impeller structure that drives airflow through centrifugal force.

[0003] The existing centrifugal impeller of the evaporator fan has a completely open air inlet structure. When the air and fluid do work along the impeller blades, there will be a problem of volume leakage to the air inlet. In addition, the flow along the radial direction of the impeller end face will interfere with the air and fluid doing work along the blade streamline direction, thus interfering with the work capacity of the airflow. To address this, we propose a centrifugal impeller for the evaporator fan of cold chain equipment. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal impeller for an evaporator fan in a cold chain equipment, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal impeller for an evaporator fan in a cold chain equipment, comprising: Impeller base; The impeller has a plurality of blades, which are arranged in a ring at equal intervals on the impeller base. A ring cover is disposed between several impeller blades.

[0006] Preferably, the impeller base has an outward arc-shaped protrusion on the middle of one side facing the impeller blade.

[0007] Preferably, the impeller blade has an arc-shaped structure, with one end of the impeller blade extending toward the central arc-shaped protrusion on the impeller base, and the other end of the impeller blade extending toward the outer edge of the ring cover.

[0008] Preferably, the inner diameter of the ring cover is 0.6-0.8 times the maximum outer diameter of the centrifugal impeller.

[0009] Preferably, reinforcing rings are provided at both the outer and inner edges of the ring cover.

[0010] Preferably, a connecting sleeve is provided on the rear side of the impeller base corresponding to the central arc-shaped protrusion, and the connecting sleeve is externally connected to the output end of the evaporator fan of the cold chain equipment through a connecting shaft.

[0011] Preferably, a reinforcing rib is provided between the impeller base and the connecting sleeve.

[0012] Preferably, a reinforcing ridge is provided on the rear side of the impeller base corresponding to the connection point of the impeller blades.

[0013] Preferably, the centrifugal impeller is a one-piece molded structure.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model provides an annular cover between several impeller blades. By setting the annular cover at the open end of the centrifugal impeller, when the air comes in from the end face of the impeller blades, the air does work through the trajectory of the impeller blades and is accelerated by the blade shape trajectory. The annular cover can reduce the interference of the airflow along the radial direction at the end face of the impeller and provide the kinetic energy of the wind, reduce the volume loss of the impeller blades, thereby increasing the air volume and air pressure of the centrifugal impeller and improving the performance of the centrifugal impeller of the evaporator fan in cold chain equipment. 2. This utility model improves the structural strength of the centrifugal impeller by using reinforcing rings, reinforcing ribs and reinforcing convex strips. At the same time, it adopts an integrated molding structure to further enhance the connection strength of the integrated molding, ensuring the operational reliability and stability of the centrifugal impeller of the evaporator fan in cold chain equipment. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention; Figure 3 This is a three-dimensional structural diagram of the present invention; Figure 4 This is a schematic diagram of the main structure of this utility model; Figure 5 This is a schematic diagram of the rear view structure of this utility model.

[0016] In the diagram: 1. Impeller base; 2. Impeller base; 3. Ring cover; 4. Reinforcing ring; 5. Connecting sleeve; 6. Connecting shaft; 7. Reinforcing rib; 8. Reinforcing ridge. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 The centrifugal impeller of the evaporator fan for cold chain equipment provided by this utility model includes: Impeller base 1, the middle part of the side of the impeller base 1 facing the impeller blade 2 protrudes outward in an arc shape; Impeller blades 2 are provided in a plurality of them. The plurality of impeller blades 2 are arranged in a ring at equal intervals on the impeller base 1. The impeller blades 2 have an arc-shaped structure. One end of the impeller blade 2 extends toward the arc-shaped protrusion in the middle of the impeller base 1, and the other end of the impeller blade 2 extends toward the outer edge of the ring cover 3. The ring cover 3 is disposed between several impeller blades 2, and the inner diameter of the ring cover 3 is 0.6-0.8 times the maximum outer diameter of the centrifugal impeller.

[0019] This invention features a ring cover 3 between several impeller blades 2. By installing the ring cover 3 at the open end of the centrifugal impeller, when air enters from the end face of the impeller blades 2, the air does work through the trajectory of the impeller blades 2 and is accelerated by the blade shape trajectory of the impeller blades 2. The ring cover 3 can reduce the interference of the airflow along the radial direction at the end face of the impeller and provide the kinetic energy of the wind, reduce the volume loss of the impeller blades 2, thereby increasing the air volume and air pressure of the centrifugal impeller and improving the performance of the centrifugal impeller of the evaporator fan in cold chain equipment.

[0020] In this embodiment, as Figures 1-5 As shown, reinforcing rings 4 are provided on both the outer and inner edges of the ring cover 3. A connecting sleeve 5 is provided on the rear side of the impeller base 1 corresponding to the central arc-shaped protrusion. The connecting sleeve 5 is connected to the output end of the evaporator fan of the cold chain equipment through the connecting shaft 6. A reinforcing rib 7 is provided between the impeller base 1 and the connecting sleeve 5. A reinforcing rib 8 is provided on the rear side of the impeller base 1 corresponding to the connection of the impeller blades 2. The centrifugal impeller is a one-piece molded structure. This utility model improves the structural strength of the centrifugal impeller by using a reinforcing ring 4, a reinforcing rib 7, and a reinforcing convex strip 8. At the same time, it adopts an integrated molding structure to further enhance the connection strength of the integrated molding, ensuring the operational reliability and stability of the centrifugal impeller of the evaporator fan in cold chain equipment.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal impeller for an evaporator fan in a cold chain equipment, characterized in that, include: Impeller base (1); Impeller blades (2), which are provided in a plurality of them, and the plurality of impeller blades (2) are arranged in a ring at equal intervals on the impeller base (1); A ring cover (3) is disposed between several impeller blades (2).

2. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 1, characterized in that: The impeller base (1) protrudes outward in an arc shape from the middle of one side facing the impeller blade (2).

3. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 2, characterized in that: The impeller blade (2) has an arc-shaped structure. One end of the impeller blade (2) extends toward the central arc-shaped protrusion on the impeller base (1), and the other end of the impeller blade (2) extends toward the outer edge of the ring cover (3).

4. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 3, characterized in that: The inner diameter of the ring cover (3) is 0.6-0.8 times the maximum outer diameter of the centrifugal impeller.

5. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 1, characterized in that: The outer and inner edges of the ring cover (3) are provided with reinforcing rings (4).

6. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 1, characterized in that: A connecting sleeve (5) is provided on the rear side of the impeller base (1) corresponding to the central arc-shaped protrusion. The connecting sleeve (5) is externally connected to the output end of the evaporator fan of the cold chain equipment through the connecting shaft (6).

7. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 6, characterized in that: A reinforcing rib (7) is provided between the impeller base (1) and the connecting sleeve (5).

8. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 1, characterized in that: A reinforcing ridge (8) is provided on the rear side of the impeller base (1) at the connection point with the impeller blade (2).

9. The centrifugal impeller of an evaporator fan for cold chain equipment according to claim 1, characterized in that: The centrifugal impeller is a one-piece molded structure.

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