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Blower device

A technology of blower and fixing device, applied in the direction of pump device, electric heating device, mechanical equipment, etc., can solve the problems such as hindering the air volume and increasing the passing frequency of blades.

Inactive Publication Date: 2005-12-14
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0015] However, in the conventional ventilation fan 4, the air flow formed by the rotation of the centrifugal fan 43 forms a wider loss area due to the increase of the boundary layer at the edge portion of the discharge port 46, and this flow loss in the discharge port 46 The air volume is hindered, and the blade passing frequency (blade passing frequency) (hereinafter referred to as BPF) noise of the blower fan 43 is increased

Method used

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Embodiment Construction

[0034] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0035] The blower device according to the present invention operates similarly to the conventional one, so that a description of the operation of the blower device is omitted for the sake of simplicity.

[0036] Such as Figure 4 As shown, the blower device according to the present invention includes a pair of centrifugal fans 430, a drive motor 410 for rotating the centrifugal fans 430, a bracket 420 fixed and combined with the side of the drive motor 410, and a pair of brackets 420 combined with And accommodate the fan casing 440 of the centrifugal fan 430, the fan casing 440 has the suction port 450 combined with the bracket 420 and formed in the axial direction of the centrifugal fan 430, for sucking gas by the rotation of the centrifugal fan 430, and There is a discharge port 460 formed perpendicularly to the suction...

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Abstract

A blower device for use in an over-the-range (OTR) microwave oven or the like, comprising a centrifugal fan, a bracket coupled to the side of a drive unit, and a fan housing that rotatably accommodates the centrifugal fan and communicates with the The bracket is fixed and combined, has a suction port formed in the axial direction of the centrifugal fan for sucking gas by the rotation of the centrifugal fan, and has a discharge port formed perpendicular to the suction port for discharging the gas sucked through the suction port . The edge of the discharge port is formed into a convex shape in the axial direction by a first slope of a convex portion protruding from the bracket in the axial direction and a second slope formed in the fan case, and the first slope and the second slope A point of inflection is formed at the point of contact.

Description

technical field [0001] The present invention relates to a blower device, and more particularly to a blower device for use in an over the range (OTR) microwave oven or the like. Background technique [0002] In general, an OTR microwave oven is a household appliance installed on a gas range installed in a kitchen, and is used to perform cooking functions using microwaves in the chamber, and at the same time use a blower device installed therein to suck / exhaust combustion gas or polluted air in the kitchen The ventilation function of the combustion gas or polluted air is generated in the gas range installed on the lower side of the OTR microwave oven. [0003] figure 1 A conventional OTR microwave oven is shown and described below: [0004] Such as figure 1 As shown, a conventional OTR microwave oven includes a main body 1 having a cooking space C, in which cooking is performed by microwaves; a casing 3, in which the main body 1 is positioned and a flow path 2 is formed on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D25/08F01D1/02F04D29/40F04D29/42F04D29/44F04D29/66H05B6/80
CPCF04D25/166F04D29/422H05B6/6423Y10T29/49329F04D29/40
Inventor 孙尚范全完镐柳湖善宋圣培
Owner LG ELECTRONICS INC