Air Purifier

This application claims the benefit of and priority to Korean Patent Application No. 10-2024-0077101, filed in Korea on Jun. 13, 2024, the entire disclosure(s) of which is hereby incorporated herein by reference in its entirety.

The present disclosure relates to an air purifier, and more particularly, to an air purifier which discharges filtered air in upper and lower directions.

An air purifier is a device that filters and discharges air inside a predetermined space to reduce dust and bacteria in the air in the corresponding space. The air purifier filters out foreign substances through an air flow in the corresponding space and discharges air from which the foreign substance is removed.

In order to suck the air in a wide range of the corresponding space and to discharge the filtered air, it is possible to initiate a structure of forming an inlet on a circumference surface of a cylindrical case, and discharging the filtered air to the top. However, a device which switches a separate flow to a top to which the filtered air is discharged is provided in order to discharge the filtered air to a long-distance area of the corresponding space to discharge the filtered air to a wide area of an indoor space.

Korean Patent Unexamined Publication No. 10-2018-0000121 discloses a blowing device which flows the air to the top from a lower circumferential surface, and a booster which is disposed above the blowing device and switches the flow of the air discharged to the top.

However, such a structure discloses a booster having a relatively large size in order to air discharged to an upper side from a body as a whole. This becomes possible only when a performance or a size of the booster should be secured because air of the body should be made to flow as a whole.

In view of the above, the present disclosure solves the above-described problems and other problems.

Another object of the present disclosure is to provide an air purifier having a structure to change a wind direction of air which flows from a body even though a booster having a small size is used.

Yet another object of the present disclosure is to provide an air purifier which minimizes a size of the booster and maximizes the booster.

Still yet another object of the present disclosure is to provide an air purifier which switches the wind direction of the air which flows from the body through internal and external configurations and forms of the booster.

In order to achieve the objects, the present disclosure provides an air purifier including: a body having an inlet formed on a circumferential surface thereof and an outlet formed on an upper surface thereof; and a booster disposed on the body and switching a flow direction of air which flows to the upper side through the outlet.

The booster includes a booster case having a booster inlet at one side facing the outlet and a booster outlet in an opposite direction to the booster inlet, and a booster fan rotatably disposed inside the booster case, and sucking air in a direction which is in line with a rotary axis and sending the air in a vertical direction to the rotary axis.

A booster discharge passage is disposed inside the booster case to guide the air flowing by the booster fan toward the booster outlet.

The booster discharge passage configured to be bent toward the booster outlet within the booster case so as to send the air flowing from the booster fan to the booster outlet.

The booster discharge passage decreases in cross-sectional area toward the booster outlet.

The booster further includes a fan housing disposed in the booster case to form a space in which the booster fan is disposed.

The fan housing has a housing suction port, and a housing discharge port formed on a circumferential surface of the fan housing.

The booster case includes a front body disposed in a front of the booster fan. The booster case includes a circumference body disposed in a circumferential direction of the booster fan. The booster case includes a rear body disposed in a rear of the booster fan and having the booster inlet.

The booster outlet is formed between the front body and the circumference body in an annular shape.

The front body includes a front wall disposed in the front of the booster fan, and a first inner guide wall extended to a rear on an outer circumference of the front wall.

The first inner guide wall is formed to have a diameter that decreases from the front wall toward the rear.

The circumference body a second inner guide wall spaced apart from the first inner guide wall.

The booster discharge passage is formed between the first inner guide wall and the second inner guide wall.

The circumference body includes an outer wall, and a second inner guide wall disposed at an inner side of the outer wall and guiding the air discharged from the booster to the booster outlet.

The outer wall and the second inner guide wall are disposed to be spaced apart from each other.

A gap between the outer wall and the second inner guide wall are spaced apart from each other decreases toward the booster outlet.

The outer wall and the second inner guide wall are disposed to be in contact with each other at one side of the booster outlet.

The rear body forms a continuous surface with the outer wall of the circumference body.

The circumference body includes an inner circumference body that guides the air discharged from the booster fan and an outer circumference body disposed on an outer circumference of the inner circumference body.

A front end portion of the inner body has a structure of protruding to an outer side so as to cover an outer peripheral end of the outer circumference body.

The booster case includes a case front wall disposed on a front surface of the booster fan, and a case rear wall disposed on a circumferential surface and a rear surface of the booster fan, and having the booster inlet.

The booster outlet formed in the annular shape is formed between the case rear wall and the case front wall.

The case rear wall is formed in a hemispherical shape.

A plurality of booster inlets are are radially formed in the case rear wall.

The case rear wall includes a lower rear wall that forms a curved surface extending downward based on a imaginary tangent line perpendicular to the ground and is in contact with the case rear wall, and an upper rear wall that forms a curved surface extending upward based on the imaginary tangent line.

At least a portion of the booster inlet is disposed on the lower rear wall.

An extension line of the imaginary tangent line is formed to pass through the upper outlet.

Details of other embodiments will be included in the detailed description and the accompanying drawings.

According to the air purifier of the present disclosure, there are one or more following effects.

First, as a booster fan, a mixed flow fan is used and a flow direction of air is switched through an internal inner guide to use a booster having a small size. That is, there is also an advantage in that the flow direction of the air can be switched by using the booster having the small size.

Second, a size of the booster can be minimized through forms of a booster fan and a discharge passage. On the contrary, a performance of the booster can be maintained and enhanced by a hemispherical shape of a booster case formed to maintain a performance of the booster fan and smoothly introduce air into the booster.

Third, there is an advantage in that through a structure of the booster and a structure in which the booster is disposed at an upper side of the body, the flow direction of the air is switched to an inside of the booster and an outside of the booster to increase an air volume of air of which overall flowing is switched.

The effects of the present disclosure are not limited to the aforementioned effect, and other effects, which are not mentioned above, will be apparent to a person having ordinary skill in the art from the description of the claims.

Advantages and features of the present disclosure, and methods for accomplishing the same will be more clearly understood from embodiments described in detail below with reference to the accompanying drawings. However, the present disclosure is not limited to embodiments disclosed below but may be implemented in various different forms. However, the exemplary embodiments are provided to make the present disclosure be complete and completely announce the scope of the present disclosure to those skilled in the art to which the present disclosure belongs and the present disclosure is just defined by the scope of the claims. The present disclosure is just defined by the scope of the claims. Throughout the present disclosure, the same reference numerals denote the same elements.

Hereinafter, the present disclosure will be described with reference to drawings for describing an air purifier according to embodiments of the present disclosure.

is a perspective view of an air purifier according to an embodiment of the present disclosure.is a perspective view of a state in which a booster is separated from a body in. An appearance of the air purifier according to the present disclosure is described with reference to.

The air purifier includes a bodyin which air is sucked through inletsandformed on a circumferential surface, and the air is discharged through an upper outletformed on an upper surface. A lower outletis also formed on a lower surface in the body.

The air purifier may include a boosterwhich is disposed at an upper side of the body, and switches a flow direction of the air discharged through the upper outletof the body.

The bodyincludes a caseforming an appearance. A filter which filters the sucked air and a fan which forms air flowing may be disposed inside the case.

The casehas a substantially cylindrical structure. The casehas the inletsandformed on a circumferential surface thereof in the cylindrical structure. The casehas the upper outletformed on an upper surface thereof. The casehas the lower outletformed on a lower surface thereof.