Patent Description:
An air conditioner is a device that sucks indoor air, conditions the sucked air, and then discharges the conditioned air. In this case, air conditioning refers to appropriately controlling the temperature, humidity, cleanliness, airflow distribution, etc. of indoor air. The type of the air conditioner may include a ventilation device, a cooling and heating device, an air purifier, a humidifier, and the like.

An air purifier, which is an example of an air conditioner, is a device used to control the cleanliness of indoor air by removing pollutants in the air. The air purifier may remove bacteria, viruses, mold, fine dust, and chemicals that cause bad odors in the sucked air.

The air purifier may be provided with a filter for purifying polluted indoor air. The air sucked by the air purifier may be purified as clean air by removing contaminants while passing through the filter, and the purified air may be discharged to the outside of the air purifier. Meanwhile, recently, a cooling and heating device, which is an example of an air conditioner, may also include a filter unit to perform an air cleaning function.

The air conditioner may include a fan for sucking and discharging air, and may include various blowing structures for guiding air discharged by the fan to an outlet of the air conditioner.

On the other hand, by the fan or the blowing structure, a vortex may be formed on an air flow path inside the air conditioner. When a vortex is formed, flow loss and flow noise may occur, and thus it is required to prevent or reduce the formation of a vortex.

<CIT> discloses an air conditioner including a main body, a fan, a motor and a motor cover. Document <CIT> discloses an air conditioner with a flow guide element at the rear surface.

The present disclosure of the invention which will be referred to simply as disclosure is directed to providing an air conditioner capable of achieving blowing efficiency and noise reduction by preventing or reducing the formation of a vortex.

Further, the present disclosure is directed to providing an air conditioner capable of increasing an air purification performance by increasing an amount of air discharged from the air conditioner.

According to the invention, there is provided an air conditioner as set out in claim <NUM>. Preferred features are set out in the dependent claims. An aspect of the disclosure provides an air conditioner including a main body, a fan configured to form an airflow inside the main body, a motor including a shaft to which the fan is coupled, and a motor cover to which the motor is fixed. The motor cover includes a body including a rear surface formed in a truncated cone shape, and a vortex breaker which protrudes toward the fan from the rear surface of the body along an outer periphery of the body, so as to prevent air, which is discharged from the fan, from forming a vortex.

The body may form an accommodation space in which the motor is accommodated, and the motor cover may include a cover panel coupled to one side of the body to cover the accommodation space, and the cover panel may include an airflow guide formed on an outer peripheral side of the cover panel to guide air passing through the vortex breaker to an outlet of the main body.

The motor cover may form an air flow path to guide air, which is discharged from the fan, to the outlet, and the motor cover may include a guide vane formed on an outer peripheral surface of the body and disposed on the air flow path so as to stabilize an air flow. The vortex breaker may be disposed further upstream of the air flow path than the guide vane, and the airflow guide may be disposed further downstream of the air flow path than the guide vane.

The vortex breaker and the airflow guide may be formed in a ring shape. That is, the vortex breaker and the airflow guide may be ring-shaped.

The guide vane may extend in a radial direction from the outer peripheral surface of the body.

A shortest distance between the vortex breaker and the fan in a direction parallel to the shaft may be greater than or equal to <NUM>, and less than or equal to <NUM>.

A difference between a shortest distance between a coupling portion center of the shaft and the vortex breaker, and a distance between the coupling portion center of the shaft and one end of the fan adjacent to the vortex breaker, may be greater than or equal to <NUM>, and less than or equal to <NUM>.

The airflow guide may include a curved surface which extends in a radial direction of the cover panel, and the curved surface may curve away from the fan with respect to a direction parallel to the shaft.

A width of the airflow guide in the direction parallel to the shaft may be greater than or equal to <NUM>.

The cover panel may include a plate portion to cover an opening of the accommodation space exposed to the outside, and the airflow guide may extend along an outer periphery of the plate portion and be connected to the plate portion.

The accommodation space may include a motor accommodating portion in which the motor is mounted, and a heat dissipation flow path portion provided to connect the motor accommodating portion to the opening to discharge heat generated from the motor. The motor cover may include a support panel to support the motor and to define the motor accommodating portion and the heat dissipation flow path portion.

The support panel may include a communication hole to allow the motor accommodating portion and the heat dissipation flow path portion to communicate with each other, and the cover panel may include a heat dissipation hole formed in the plate portion.

The plate portion may cover <NUM>% or more of an area of the opening.

The main body may further include a fan case in which the fan is disposed, and the motor cover may be coupled to the fan case.

The motor cover may form the air flow path together with the fan case.

Another aspect of the disclosure provides an air conditioner including a case in which an outlet is provided in front, and a fan assembly arranged in the case and configured to discharge air to a front side. The fan assembly includes a fan, a vortex breaker arranged in front of the fan and formed in a ring shape so as to prevent a vortex from being formed by the fan, and an airflow guide formed in a ring shape and arranged in front of the vortex breaker so as to guide air to the outlet.

The fan assembly may further include a guide vane arranged in a front and rear direction between the vortex breaker and the airflow guide.

The fan assembly may include the vortex breaker and the guide vane, and the fan assembly may include a cover bracket fixed to the case, and a cover panel coupled to the cover bracket and in which the airflow guide is formed.

The fan assembly may further include a motor configured to drive the fan, and the motor may be fixed to the cover bracket.

Another aspect of the disclosure provides an air conditioner including a case, a fan arranged in the case, a motor coupled to the fan and configured to drive the fan, and a motor cover to which the motor is coupled, the motor cover fixed to the case. The motor cover includes a body provided to form a motor accommodating portion in which the motor is accommodated, and a vortex breaker provided to protrude toward the fan from a rear surface of the body to prevent a vortex from being formed by the fan, the vortex breaker formed in a ring shape along an outer periphery of the body.

An air conditioner may include a vortex breaker and an airflow guide to prevent or reduce the formation of a vortex, and to minimize the blowing efficiency reduction and the generation of the noise caused by the vortex.

An air conditioner may increase an amount of air discharged from an outlet, and improve the performance of air conditioning because air is guided to the outlet of the air conditioner by a cover panel provided with an airflow guide.

Embodiments described in the disclosure and configurations shown in the drawings are merely examples of the embodiments of the disclosure, and may be modified in various different ways to replace the embodiments and drawings of the disclosure.

In addition, the same reference numerals or signs shown in the drawings of the disclosure indicate elements or components performing substantially the same function.

Also, the terms used herein are used to describe the embodiments and are not intended to limit and / or restrict the invention as long as they fall within the scope of the claims. The singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. In this disclosure, the terms "including", "having", and the like are used to specify features, numbers, steps, operations, elements, components, or combinations thereof, but do not preclude the presence or addition of one or more of the features, elements, steps, operations, elements, components, or combinations thereof.

It will be understood that, although the terms first, second, third, etc., may be used herein to describe various elements, the elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the invention as defined in the claims, a first element may be termed as a second element, and a second element may be termed as a first element.

The term of "and / or" includes a plurality of combinations of relevant items or any one item among a plurality of relevant items. For example, the scope of the expression or phrase "A and/or B" includes all of the following: (<NUM>) the item "A", (<NUM>) the item "B", and (<NUM>) the combination of items "A and B".

In addition, the scope of the expression or phrase "at least one of A and B" is intended to include all of the following: (<NUM>) at least one of A, (<NUM>) at least one of B, and (<NUM>) at least one A and at least one of B. Likewise, the scope of the expression or phrase "at least one of A, B, and C" is intended to include all of the following: (<NUM>) at least one of A, (<NUM>) at least one of B, (<NUM>) at least one of C, (<NUM>) at least one of A and at least one of B, (<NUM>) at least one of A and at least one of C, (<NUM>) at least one of B and at least one of C, and (<NUM>) at least one of A, at least one of B, and at least one of C.

When it is stated in the disclosure that one element is "connected to" or "coupled to" another element, the expression encompasses an example of a direct connection or direct coupling, as well as a connection or coupling with another element interposed therebetween.

As used in the following description, the terms "front", "rear", "left" and "right" are defined based on the drawings, and the shape and position of each component is not limited by these terms. When referring to the coordinate axes shown in the drawings, an X-axis represents a front and back direction, a Y-axis represents a left and right direction, and a Z-axis represents an up and down direction. On the other hand, a direction parallel to a XY plane, such as the front and rear direction or the left and right direction, may be referred to as a horizontal direction. If it is parallel to the XY plane, it may represent that it is horizontal. If it is perpendicular to the XY plane, it may represent that it is a vertical direction.

In addition, in the following, an air purifier, which is a type of air conditioner, will be described as an example for convenience of description, but a configuration of the disclosure for increasing flow efficiency and reducing flow noise by preventing or reducing the formation of a vortex is not limited thereto, and thus the configuration thereof may be appliable to other air conditioner. For example, the configuration thereof may also be applicable to a cooling and heating device, which is a type of air conditioner other than an air purifier. Because the air purifier is included in the air conditioner, the air purifier described below may be replaced with the air conditioner. Further, the configuration thereof may be applicable to home appliances in which a fan is driven and a flow path, in which air discharged by the fan flows, is provided.

Hereinafter example embodiments of the disclosure will be described in detail with reference to the accompanying drawings.

<FIG> is a perspective view of an air purifier according to one embodiment of the disclosure. <NUM> is a cross-sectional view of the air purifier shown in <FIG>. <FIG> is an exploded perspective view of the air purifier shown in <FIG>.

Referring to <FIG>, an air purifier <NUM> may include a main body <NUM> in a box-shape.

The main body <NUM> may include a cabinet provided to form an exterior. The cabinet may include an upper cabinet <NUM>, a left cabinet <NUM>, a right cabinet <NUM>, and a lower cabinet <NUM>. The main body <NUM> may include a rear panel <NUM> on which an inlet <NUM> is formed. The main body <NUM> may include an edge panel <NUM> provided to form a rim of a front surface of the main body <NUM> that is opened.

The upper cabinet <NUM>, the left cabinet <NUM>, and the right cabinet <NUM> may be integrally formed with each other. The upper cabinet <NUM>, the left cabinet <NUM>, the right cabinet <NUM>, and the lower cabinet <NUM> may be arranged sequentially so as to form an upper surface, a left surface, a right surface, and a lower surface of the main body <NUM>. The rear panel <NUM> may form a rear surface of the main body <NUM>.

The air purifier <NUM> may include the inlet <NUM> formed in the main body to allow outside air to flow inside the air purifier <NUM>, and an outlet <NUM> formed in the main body <NUM> to allow the air, which is introduced through the inlet <NUM>, to be discharged. The inlet <NUM> and the outlet <NUM> may be formed on different surfaces or may be formed on the same surface. The inlet <NUM> may be formed on a rear end side of the main body <NUM>. The outlet <NUM> may be formed on a front end side of the main body <NUM>.

The air purifier <NUM> may include a filter unit <NUM> and a fan assembly <NUM> disposed inside the main body <NUM>. The fan assembly <NUM> may suck the outside air to the inside of the main body <NUM> through the inlet <NUM> and pass the sucked air through the filter unit <NUM>, and then discharge air, which is filtered by the filter unit <NUM>, to the outside of the main body <NUM> through the outlet <NUM>. The filter unit <NUM> may purify air, which is sucked through the inlet <NUM>, and be removably installed in the main body <NUM>.

The main body <NUM> may include a filter case <NUM> to which the filter unit <NUM> is mounted. The main body <NUM> may include a fan case <NUM> in which the fan assembly <NUM> is accommodated and to which the fan assembly <NUM> is fixed.

The fan case <NUM> may include an inner wall <NUM> that forms an air flow path <NUM> provided to guide the airflow formed by the fan assembly <NUM> to the outlet <NUM> provided in the front of the fan case <NUM>. The fan <NUM> may be covered by the inner wall <NUM>. The filter case <NUM> may be disposed at the rear of the fan case <NUM>. The filter case <NUM> and the fan case <NUM> may be covered by the cabinet. On the other hand, the air flow path <NUM> may be defined as a flow path that is formed from the inlet <NUM> of the air purifier <NUM> to the outlet <NUM> of the air purifier <NUM> or to a fine outlet <NUM>, and in which air, which is moved by the fan assembly <NUM>, flows.

The air purifier <NUM> may include a panel <NUM> provided to be movable with respect to the main body <NUM> so as to adjust the size of the outlet <NUM>. The panel <NUM> may be disposed in a front portion of the main body <NUM>. The panel <NUM> may form the front surface of the air conditioner <NUM>.

In response to the panel <NUM> being moved forward by a predetermined distance, the size of the outlet <NUM> may be increased. In response to the panel <NUM> being moved backward by a predetermined distance in a state of being moved forward by a predetermined distance, the size of the outlet <NUM> may be reduced.

In other words, the outlet <NUM> may correspond to a gap between the panel <NUM> and the main body <NUM>. Accordingly, as the panel <NUM> and the main body <NUM> are away from each other, the size of the outlet <NUM> may be increased, and as the panel <NUM> and the main body <NUM> are close to each other, the size of the outlet <NUM> may be reduced. When the panel <NUM> and the main body <NUM> come into contact with each other, the outlet <NUM> may be closed and the air may be discharged to the outside of the air purifier <NUM> through the plurality of fine outlets <NUM> formed in the panel <NUM>. Because an area of each of the plurality of fine outlets <NUM> is less than an area of the outlet <NUM>, the air passing through the fine outlets <NUM> may be discharged at a lower speed than the air passing through the outlet <NUM>. On the other hand, all or a portion of the air flow path <NUM> may be provided inside the main body <NUM>. A portion of the air flow path <NUM> may be provided between the main body <NUM> and the panel <NUM>.

However, the disclosure is not limited thereto. The panel <NUM> may be fixed immovably in the front portion of the main body <NUM>, and the outlet <NUM> may be formed in the panel <NUM> or the main body <NUM>. The panel <NUM> and the main body <NUM> may be provided integrally with each other.

<FIG> is an exploded view of a fan assembly shown in <FIG>. <FIG> is a rear perspective view of a cover bracket shown in <FIG>. <FIG> is a rear perspective view of a cover panel shown in <FIG>. <FIG> is an enlarged view of a region A of FIG. <NUM> through which an airflow moves. <FIG> is an enlarged view of a region B of <FIG>.

Referring to <FIG>, the fan assembly <NUM> may include a fan <NUM> configured to form an airflow inside the main body <NUM>, a motor <NUM> configured to drive the fan <NUM>, and a motor cover <NUM> in which the motor <NUM> is accommodated and fixed.

The motor <NUM> may include a shaft <NUM>, and the shaft <NUM> may be coupled to the fan <NUM> to transmit power of the motor <NUM> to the fan <NUM>. The shaft <NUM> may extend in the front and rear direction.

The fan <NUM> may include a rotation axis R parallel to the front and rear direction. The fan <NUM> may include a mixed flow fan. The fan <NUM> may include a turbofan. The fan <NUM> may include a suction port <NUM> provided to suck air from the rear side. The fan <NUM> may include a plurality of blades <NUM>. The fan <NUM> may be configured to discharge air to the front side.

The motor cover <NUM> may support the fan <NUM> to allow the fan <NUM> to be arranged inside the fan case <NUM>. For example, the motor <NUM> is fixed to the motor cover <NUM>, and the fan <NUM> is coupled to the motor <NUM> via shaft <NUM>. The fan case <NUM> is coupled to the motor cover <NUM>, and the fan <NUM> may be supported by the motor cover <NUM>.

The motor cover <NUM> may include a cover bracket <NUM> coupled to the fan case <NUM>. The cover bracket <NUM> may include a fixing portion 130a coupled to a front surface of the fan case <NUM>.

The cover bracket <NUM> may include a body <NUM> provided to form an accommodation space <NUM> in which the motor <NUM> is accommodated, and a plurality of guide vanes <NUM> provided to protrude from a side surface 132a of the body <NUM>. A cut surface of the body <NUM> cut by a plane perpendicular to the rotation axis R of the fan <NUM> may be circular. That is, one cross-section of the body <NUM> cut by a plane perpendicular to the front and rear direction may be circular. Accordingly, the side surface 132a of the body <NUM> may correspond to an outer peripheral surface 132a of the body. The plurality of guide vanes <NUM> may extend radially from the outer peripheral surface 132a of the body <NUM>.

The plurality of guide vanes <NUM> may be disposed on a guide flow path 131a corresponding to a portion of the air flow path <NUM>. Particularly, the cover bracket <NUM> may include an edge wall 130b provided to surround the body <NUM> and to form the guide flow path 131a together with the body <NUM>. The plurality of guide vanes <NUM> may be arranged between the body <NUM> and the edge wall 130b so as to connect the body <NUM> to the edge wall 130b. Further, the plurality of guide vanes <NUM> may be arranged on the guide flow path 131a formed between the body <NUM> and the edge wall 130b. The guide flow path 131a may be formed in a substantially annular shape. The guide vanes <NUM> may guide the airflow moving toward the outlet <NUM>, and stabilize the airflow, thereby preventing swirling.

The body <NUM> may have an approximately hollow truncated cone shape. The body <NUM> may decrease in diameter from the front to the rear. A rear surface 132b of the body <NUM> may be away from the rotation axis R as the rear surface 132b moves away from the fan <NUM> in approximately the front and rear direction. The rear surface 132b of the body <NUM> may form the air flow path <NUM> together with the inner wall <NUM>. That is, the rear surface 132b of the body <NUM> may guide the air.

A through hole 132c through which the shaft <NUM> of the motor <NUM> passes may be formed on the rear surface of the body <NUM>.

The accommodation space <NUM> formed by an inner surface of the body <NUM> may include an opening 133a open toward the front. The opening 133a may be formed by a front end of the body <NUM>. The opening 133a may have a circular shape.

The accommodation space <NUM> may include a motor accommodating portion 133b in which the motor <NUM> is accommodated and mounted, and a heat dissipation flow path portion 133c in which the heat generated by the motor <NUM> is discharged. The motor accommodating portion 133b may be provided in such a way that a rear end thereof is connected to the through hole 132c and a front end thereof is connected to the heat dissipation flow path portion 133c. The heat dissipation flow path portion 133c may be provided in such a way that a rear end thereof is connected to the motor accommodating portion 133b and a front end thereof is connected to the opening 133a.

The motor cover <NUM> may include a support panel <NUM> disposed in the accommodation space <NUM> to support the motor <NUM> from the front and provided to define the motor accommodating portion 133b and the heat dissipation flow path portion 133c. The support panel <NUM> may be fixed to the inner surface of the body <NUM>. The support panel <NUM> may include a communication hole <NUM> through which the motor accommodating portion 133b and the heat dissipation flow path portion 133c communicate with each other.

The motor cover <NUM> may include a vortex breaker <NUM> provided to protrude from the body <NUM> toward the fan <NUM> so as to prevent a vortex from being formed by the fan <NUM>. The vortex breaker <NUM> may be disposed further upstream of the air flow path <NUM> than the guide vane <NUM>. The vortex breaker <NUM> may be disposed in front of the fan <NUM>. In front of blade <NUM> of the fan <NUM>, the vortex breaker <NUM> may be arranged adjacent to the blade <NUM>.

The vortex breaker <NUM> may correspond to an annular protrusion extending along the outer periphery of the body <NUM>. An outer surface 134a of the vortex breaker <NUM> may be connected to the outer peripheral surface 132a of the body <NUM>. The vortex breaker <NUM> may be formed at a portion in which the rear surface 132b of the body <NUM> having a side surface shape of a truncated cone is connected to the outer peripheral surface 132a of the body <NUM> having a side surface shape of a cylinder shape. The vortex breaker <NUM> may be formed integrally with the body <NUM> or may be provided separately from the body <NUM>.

An inner surface 134b of the vortex breaker <NUM> may be an inclined curved surface extending in a radial direction as the inclined curved surface approaches the fan <NUM> in the front and rear direction. That is, the inner surface 134b of the vortex breaker <NUM> may be an inclined curved surface that approaches the rotation axis R of the fan <NUM> as the inclined curved surface moves away from the fan <NUM> in the front and rear direction.

The vortex breaker <NUM> may be placed adjacent to the blade <NUM>, which discharges the air toward the front side, to collide with the air, which is discharged by the blade <NUM>, so as to prevent the air discharged by the blade <NUM> from swirling, thereby preventing the formation of a vortex. In addition, because the vortex breaker <NUM> includes the inner surface 134b corresponding to the curved surface, the air discharged from the fan <NUM> may be moved smoothly along the inner surface 134b when colliding with the vortex breaker <NUM>, and thus the air discharged from the fan <NUM> may be guided toward the guide vane <NUM>.

In order to sufficiently obtain a vortex prevention effect while preventing the collision with the blade <NUM>, a shortest distance d3 in the front and rear direction between the vortex breaker <NUM> and the blade <NUM> may be greater than or equal to <NUM>, but less than or equal to <NUM>. Meanwhile, the shortest distance d3 in the front and rear direction between the vortex breaker <NUM> and the blade <NUM> may correspond to a shortest distance in the front and rear direction between the vortex breaker <NUM> and the fan <NUM>.

In order to sufficiently obtain a vortex prevention effect while preventing the collision with the blade <NUM>, a difference between a shortest distance d2 between a coupling portion center P of the shaft <NUM> and the vortex breaker <NUM>, and a distance d1 between the coupling portion center P of the shaft <NUM> and one end of the blade <NUM> adjacent to the vortex breaker <NUM> may be greater than or equal to <NUM>, but less than or equal to <NUM>. The coupling portion center P of the shaft <NUM> may correspond to a center of a portion in which the shaft <NUM> is coupled to the fan <NUM>.

As mentioned above, the vortex breaker <NUM> may prevent or reduce the formation of the vortex that is formed by the air discharged through the fan <NUM>. Accordingly, it is possible to minimize flow loss and flow noise caused by the vortex.

The motor cover <NUM> may include a cover panel <NUM> provided to cover the opening 133a of the accommodation space <NUM>. The cover panel <NUM> may be removably coupled to the front end of the body <NUM>. The cover panel <NUM> may be disposed in front of the body <NUM>.

The cover panel <NUM> may include a plate portion <NUM> provided to form a front surface of the cover panel <NUM> and formed in a disk shape, and an annular airflow guide <NUM> provided to extend along the outer periphery of the cover panel <NUM> and guide the air, which passes through the guide vane <NUM>, to the outlet <NUM>. That is, the airflow guide <NUM> may guide the air passing through the cover bracket <NUM> to the outlet <NUM>.

The airflow guide <NUM> may be disposed downstream of the air flow path <NUM> than the guide vane <NUM>. The airflow guide <NUM> may be disposed in front of the fan <NUM>. The airflow guide <NUM> may be disposed on the opposite side to the vortex breaker <NUM> with respect to the guide vane <NUM>. The airflow guide <NUM> may be disposed adjacent to the guide vane <NUM>. Because an outer periphery of a rear end of the cover panel <NUM> is approximately the same as an outer periphery of the front end of the body <NUM>, the airflow guide <NUM> may be arranged on the outer periphery of the body <NUM> when the cover panel <NUM> is coupled to the front end of the body <NUM>.

A width of the airflow guide <NUM> in the front and rear direction may be greater than or equal to <NUM> to effectively guide the air toward the outlet <NUM>.

The airflow guide <NUM> may have a bell-mouth shape in which a diameter of a front end thereof is greater than a diameter of a rear end thereof, and the diameter decreases from the front end to the rear end. The airflow guide <NUM> may include a curved surface 142a corresponding to the outer peripheral surface of the cover panel <NUM>. The curved surface 142a may extend in a radial direction of the plate part <NUM> as the curved surface 142a moves away from the fan <NUM> in the front and rear direction. That is, the airflow guide <NUM> may include the curved surface 142a that moves away from the rotation axis R of the fan <NUM> as the curved surface 142a moves away from the fan <NUM> in the front and rear direction.

Because the airflow guide <NUM> is formed to have a ring shape and includes an outer surface corresponding to the curved surface 142a, the air passing through the guide vane <NUM> may be moved smoothly along the outer surface 142a and guided to the outlet <NUM> when colliding with the airflow guide. Accordingly, it is possible to prevent or reduce the formation of the vortex formed by the air passing through the guide vane <NUM>.

The plate portion <NUM> may shield all or a portion of the opening 133a of the accommodation space <NUM> to prevent the airflow passing through the guide vane <NUM> from flowing into the accommodation space <NUM> of the body <NUM>. The plate portion <NUM> of the cover panel <NUM> may include a heat dissipation hole 141a communicating with the heat dissipation flow path portion 133c.

In order to effectively shield the accommodation space <NUM> of the body <NUM>, the plate portion <NUM> may cover <NUM>% or more of the area of the opening 133a of the accommodation space <NUM>.

As mentioned above, the plate portion <NUM> may prevent the airflow passing through the guide vane <NUM> from flowing into the accommodation space <NUM>, and the airflow guide <NUM> may effectively guide most of the air, which passes through the guide vane <NUM>, to the outlet <NUM> and minimize the formation of the vortex. Therefore, an amount of air discharged from the outlet <NUM> of the air conditioner <NUM> may be increased and then it is possible to minimize flow loss and noise caused by the vortex.

Claim 1:
An air conditioner (<NUM>), comprising:
a main body (<NUM>);
a fan (<NUM>) configured to form an airflow inside the main body (<NUM>);
a motor (<NUM>) including a shaft (<NUM>) to which the fan (<NUM>) is coupled; and
a motor cover (<NUM>) to which the motor (<NUM>) is fixed, wherein the motor cover (<NUM>) includes:
a body (<NUM>) including a rear surface (132b) formed in a truncated cone shape, and
characterised by a vortex breaker (<NUM>) which protrudes toward the fan (<NUM>) from the rear surface (132b) of the body (<NUM>) along an outer periphery of the body (<NUM>), so as to prevent air, which is discharged from the fan (<NUM>), from forming a vortex.