Novel fan air inlet device and fan

Abstract

The utility model relates to the technical field of draught fans, and provides a novel draught fan air inlet device and a draught fan. The novel draught fan air inlet device comprises a rectification barrel, a sealing connecting piece connected with an impeller containing opening is installed in the rectification barrel, the sealing connecting piece comprises a wind shield and a sealing connecting disc, the wind shield is annular and installed in the rectification barrel, and the sealing connecting disc is connected with the wind shield. The sealing connecting piece further comprises a flange connecting disc, the flange connecting disc is fixed in the rectifying barrel, the wind shield is welded to the flange connecting disc and communicated with the flange connecting disc, and a rib plate is welded to the rectifying barrel. The air inlet device has the advantages that air flow can be prevented from leaking from the impeller containing opening when the impeller rotates through the sealing connecting piece, and therefore the working efficiency of the fan can be improved, and compared with a traditional air inlet device, the efficiency is improved by 1.1%-1.5%.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, and particularly relates to a novel fan air inlet device and a fan. Background Art

[0002] A fan is a device used to generate airflow or wind pressure. It converts energy into airflow by rotating blades or turbines. Fans are widely used in various industrial and civil fields, such as ventilation, air conditioning, heating, cooling, dust removal, transportation, etc.

[0003] When the fan is working, it will drive the impeller to rotate. During the rotation of the impeller, the outside air will form an airflow and enter the rectifying barrel. Since there is a gap between the rectifying barrel and the impeller mouth, the airflow in the rectifying barrel will leak from the gap, resulting in low working efficiency of the fan. Therefore, a new type of fan air inlet device and fan are urgently needed to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned technical problems existing in the prior art, a new type of fan air inlet device and fan are provided. The use of a sealing connector can prevent the air flow from leaking from the impeller mouth when the impeller rotates, thereby improving the working efficiency of the fan. Compared with the traditional air inlet device, the efficiency is increased by 1.1-1.5 percentage points.

[0005] The purpose and effect of the utility model are achieved by the following specific technical means:

[0006] A novel fan air inlet device comprises a rectifying barrel;

[0007] A sealing connector connected to the impeller mouth is installed in the rectifying barrel, and the sealing connector includes a windshield and a sealing connection disk. The windshield is annular and installed in the rectifying barrel, and the sealing connection disk is fixed on the windshield and embedded in the impeller mouth.

[0008] Preferably, the sealing connector also includes a flange connection plate, the flange connection plate is fixed in the fairing barrel, and the wind shield is welded to the flange connection plate and communicated with the flange connection plate.

[0009] Preferably, a rib plate is welded on the rectifier barrel.

[0010] The utility model also provides a novel fan, comprising the novel fan air inlet device mentioned above.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The use of sealing connectors in this new type of fan air inlet device can prevent air flow from leaking from the impeller mouth when the impeller rotates, thereby improving the working efficiency of the fan. Experimental tests have shown that the efficiency of the improved air inlet device is 1.1-1.5 percentage points higher than that of the traditional air inlet device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the front cross-sectional structure of the air inlet device and the impeller of the utility model;

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the air inlet device of the utility model;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing connector of the utility model.

[0016] Markings in the figure: rectifier barrel 1, rib plate 2, flange connection plate 3, wind shield plate 4, sealing connection plate 5, impeller 6. DETAILED DESCRIPTION

[0017] See also Figure 1-3 , the embodiments of the utility model are further described;

[0018] A novel fan air inlet device comprises a rectifying barrel 1;

[0019] The rectifying barrel 1 is provided with a sealing connector connected to the impeller opening, such as Figure 1 and 3 In the figure, the impeller is marked as 6. When the fan is working, it will drive the impeller 6 to rotate. During the rotation of the impeller 6, the outside air will form an airflow and enter the rectifying barrel 1. The function of the sealing connector is to prevent the airflow from leaking from the impeller mouth when the impeller 6 rotates, thereby improving the working efficiency of the fan; the sealing connector is specifically connected to the rectifying barrel 1 by bolts. This connection method is a detachable connection, which is convenient for on-site installation and commissioning of the fan; through experimental tests, the efficiency of the improved air intake device is improved by 1.1-1.5 percentage points compared with the traditional air intake device.

[0020] The sealing connector includes a windshield 4 and a sealing connection disk 5. The windshield 4 is annular and installed in the rectifier barrel 1. The sealing connection disk 5 is fixed on the windshield 4 and is embedded in the impeller mouth. The setting of the sealing connection disk 5 allows the sealing connector to be installed together with the impeller. Through the coordinated use of the windshield 4 and the sealing connection disk 5, the airflow can be effectively prevented from leaking from the impeller mouth when the fan is working, thereby improving the working efficiency of the fan.

[0021] The sealing connector also includes a flange connection plate 3, which is fixed in the rectifier barrel 1. The wind shield 4 is welded to the flange connection plate 3 and communicated with it. The flange connection plate 3 can be bolted to install the sealing connector in the rectifier barrel 1. This connection method is a detachable connection, which is convenient for on-site installation and debugging of the fan.

[0022] A rib plate 2 is welded on the fairing barrel 1 , and the use of the rib plate 2 enhances the stability and wind resistance of the fairing barrel 1 .

[0023] The utility model also provides a novel fan, including the above-mentioned novel fan air inlet device, the use of a sealing connector can prevent the air flow from leaking from the impeller mouth when the impeller 6 rotates, thereby improving the working efficiency of the fan; the sealing connector is specifically connected to the rectifying barrel 1 by bolts, and this connection method is a detachable connection, which is convenient for on-site installation and debugging of the fan; through experimental tests, the improved air inlet device is 1.1-1.5 percentage points more efficient than the traditional air inlet device.

Claims

1. A novel fan air inlet device, comprising a rectifying barrel (1), characterized in that: A sealing connection piece connected to the impeller mouth is installed in the rectifying barrel (1), and the sealing connection piece comprises a windshield (4) and a sealing connection disk (5). The windshield (4) is annular and installed in the rectifying barrel (1), and the sealing connection disk (5) is fixed on the windshield (4) and is embedded in the impeller mouth.

2. A novel fan air inlet device according to claim 1, characterized in that: The sealing connection also includes a flange connection plate (3), the flange connection plate (3) is fixed in the rectifier barrel (1), and the wind shield plate (4) is welded to the flange connection plate (3) and communicated with the flange connection plate (3).

3. A novel fan air inlet device according to claim 1, characterized in that: A rib plate (2) is welded on the rectifying barrel (1).

4. A new type of fan, characterized in that: A novel fan air inlet device comprising any one of claims 1-3.

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