KR20220061613A - Duct type air-conditioner - Google Patents

Abstract

The present invention relates to a duct-type air conditioner in which air conditioning capacity is maintained at a predetermined level by applying a turbo fan, but compactness is possible and maintenance/repairability is remarkably improved. According to the present invention, the duct-type air conditioner comprises: a cabinet which forms an outer body, and has a suction port formed on the rear side and an exhaust port formed on the front side; a heat exchanger which generates heat exchange between the air introduced through the suction port and the refrigerant; and a turbo fan accommodated in the cabinet and pressurizing the air heat-exchanged by the heat exchanger and discharging it through the exhaust port.

Description

Duct type air conditioner {DUCT TYPE AIR-CONDITIONER}

The present invention relates to a duct-type air conditioner, and more particularly, to a duct-type air conditioner that can be compacted while maintaining an air conditioning capacity at a predetermined level by applying a turbofan, and having significantly improved maintenance/repairability.

In general, an air conditioner uses a refrigerant refrigeration cycle consisting of a compressor, a condenser, an expansion mechanism, and an evaporator to cool and purify the air in order to create a more comfortable indoor environment for users.

In particular, the duct-type air conditioner has an air inlet connected to the suction duct on one side and an air outlet connected to the discharge duct on the other side. It is configured to condition the air in the air conditioning target room.

In this regard, Korean Patent Application Laid-Open No. 10-2009-0115278 discloses a duct-type air conditioner having at least one sirocco fan and a fan housing accommodating the sirocco fan therein.

However, in the duct-type air conditioner disclosed in that document, since the fan motor driving the sirocco fan is accommodated together in the fan housing together with the sirocco fan, replacement and repair of the sirocco fan is required and the replacement and repair of the fan motor is required. In this case, the entire fan housing had to be removed and replaced or repaired. Accordingly, there is a problem in that considerable cost and time are inevitably consumed in the process for replacement or repair.

In addition, since the sirocco fan having a horizontal rotation shaft is applied to the duct-type air conditioner disclosed in this document, the vertical size inevitably increases beyond a predetermined level in order to maintain a predetermined air conditioning capacity. Therefore, the space restrictions for installing the duct-type air conditioner had to be quite severe.

In addition, in the duct-type air conditioner disclosed in this document, the design and manufacturing cost of the fan housing itself is higher than that of the entire duct-type air conditioner because the shape of the fan housing that forms the discharge passage of the air pressurized through the sirocco fan is quite complicated. I had no choice but to maintain a high level.

Laid-open Patent Publication No. 10-2009-0115278

The present invention has been devised to solve the problems of the prior art described above, and by applying a turbofan having a vertical rotation shaft, but reducing the vertical size by configuring so that air can be simultaneously sucked through the upper and lower portions of the turbofan A first object is to provide a duct type air conditioner capable of reducing flow loss.

In addition, the present invention provides a duct-type air that can simplify the disassembly and assembly process for replacement and repair of the turbofan and the electric motor by disposing the turbofan and the electric motor apart from each other, and significantly reduce the cost and time required. It is a second object to provide a harmonizer.

A third object of the present invention is to provide a duct-type air conditioner capable of significantly reducing design and manufacturing costs of a fan housing by simplifying the shape of a fan housing that accommodates a turbofan and forms a discharge passage.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

A duct-type air conditioner according to the present invention includes a cabinet having an outer body, an intake port formed on the rear surface and an exhaust port formed on the front surface, a heat exchanger generating heat exchange between air introduced through the intake port and a refrigerant, and the cabinet and a turbofan accommodated therein, pressurizing the air heat-exchanged by the heat exchanger and discharging it through the outlet, wherein a rotating shaft of the turbofan extends vertically between an upper surface of the cabinet and a lower surface of the cabinet.

The electric motor may further include an electric motor generating rotational driving force of the turbofan, wherein the electric motor is disposed at a position spaced apart from the turbofan in a lateral direction and adjacent to any one of both side surfaces of the cabinet.

In addition, the output shaft of the electric motor extends in a direction crossing the rotation axis of the turbofan.

In addition, it further includes a universal joint for transmitting the rotational driving force of the output shaft of the electric motor to the turbofan, the universal joint is detachably connected to the output shaft of the electric motor.

In addition, the universal joint includes a horizontal shaft having one end detachably connected to the output shaft of the electric motor, an intermediate shaft having one end connected to the other end of the horizontal shaft, the other end of the horizontal shaft and one end of the intermediate shaft. a first joint for connecting parts, a vertical shaft having one end connected to the other end of the intermediate shaft and the other end connected to the fan hub of the turbofan, and the other end of the intermediate shaft and one end of the vertical shaft connecting and a second joint.

In addition, the horizontal shaft extends in a direction parallel to the bottom surface of the cabinet, and the vertical shaft extends in a direction perpendicular to the bottom surface of the cabinet.

The air heat exchanged air is disposed inside the cabinet and further includes a fan housing rotatably accommodating the turbofan, wherein the upper and lower portions of the fan housing are respectively directed toward the central upper and lower central portions of the turbofan. A first inlet and a second inlet into which is introduced are formed, and a discharge port corresponding to the outlet of the cabinet is formed in front of the fan housing.

In addition, a gap between the inner surface of the fan housing and the turbofan gradually increases while proceeding from the rear of the fan housing to the front.

In addition, the heat exchanger may include a main body disposed between the rear surface of the cabinet and the fan housing, a first bent part integrally formed with a right end of the main body, and bent toward the fan housing from the right end; and a second bent part integrally formed on the left end of the main body and extending by being bent from the left end toward the fan housing.

In addition, the body portion of the heat exchanger is disposed in parallel to the rear surface of the cabinet.

In the duct type air conditioner according to the present invention, a turbofan having a vertical rotation shaft is applied, and air is simultaneously sucked through the upper and lower portions of the turbofan, thereby reducing the vertical size but reducing flow loss. have an effect

In addition, the duct-type air conditioner according to the present invention simplifies the disassembly and assembly process for replacement and repair of the turbofan and the electric motor and significantly reduces the cost and time required by disposing the turbofan and the electric motor apart from each other. have a saving effect.

In addition, the duct type air conditioner according to the present invention has the effect of significantly reducing the design and manufacturing cost of the fan housing by simplifying the shape of the fan housing that accommodates the turbofan and forms the discharge passage.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a schematic diagram for explaining a configuration in which a duct-type air conditioner according to an embodiment of the present invention is disposed.
FIG. 2 is a perspective view of the duct-type air conditioner shown in FIG. 1 .
FIG. 3 is a partially enlarged view showing the front of the duct-type air conditioner of FIG. 2 .
4 is a partially enlarged view illustrating a driving unit of the duct type air conditioner of FIG. 3 .
FIG. 5 is a cross-sectional view illustrating a turbo fan and a fan housing of the duct type air conditioner of FIG. 2 .

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, it goes without saying that the first component may be the second component.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when it is described that a component is “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components are “interposed” between each component. It should be understood that “or, each component may be “connected,” “coupled,” or “connected,” through another component.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Also, as used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “consisting of” or “comprising” should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Throughout the specification, when “A and/or B” is used, it means A, B or A and B, unless otherwise stated, and when “C to D” is used, it means that there is no specific opposite description. Unless otherwise specified, it means that it is greater than or equal to C and less than or equal to D.

Hereinafter, the duct-type air conditioner 10 according to some embodiments of the present invention will be described.

1 is a perspective view showing a structure in which a duct-type air conditioner 10 according to the present invention is installed.

As shown in FIG. 1 , the duct type air conditioner 10 according to the present invention is located between the ceiling inner wall 6 and the ceiling finishing material 8 of the building and is connected to the suction duct 2 on the rear side 140 . The suction port 141 is formed and the discharge port 111 connected to the discharge duct 4 on the front side 110 is formed.

The air in the room sucked in through the suction port 141 exchanges heat with the refrigerant and then is discharged back into the room through the discharge port 111 and the discharge duct 4 .

The heat exchanger 500 , the turbofan 200 , and the driving unit 400 are accommodated in the cabinet 100 of the duct-type air conditioner 10 , as will be described later.

A drain pan 40 is installed at an outer lower portion of the box-shaped cabinet 100 to receive and discharge condensed water generated by the heat exchanger 500 .

In addition, a control box 600 in which electrical components for driving the duct-type air conditioner 10 are accommodated is provided on the right side 121 of the cabinet 100 , and heat exchange is provided at a position adjacent to the control box 600 . A pipe 30 for supply and recovery of the refrigerant to the unit 500 is installed. In FIG. 1, the control box 600 is illustrated in an embodiment in which the control box 600 is installed on the outer surface of the right side 121 of the cabinet 100, but this is only an example, and as shown in FIG. 2, the control box 600 is installed in the cabinet ( 100) may be configured to be installed on the inner surface of the right side 121 .

Here, the pipe 30 includes a supply pipe 31 through which the refrigerant supplied from the outdoor unit (not shown) to the heat exchanger 500 flows, and the refrigerant that has passed through the heat exchanger 500 is discharged toward the outdoor unit (not shown) again. It is composed of a recovery pipe (32).

Hereinafter, a detailed configuration of the duct-type air conditioner 10 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 5 .

2 to 5 , the duct-type air conditioner 10 according to an embodiment of the present invention includes a cabinet 100 forming an exterior, and air and refrigerant that are accommodated in the cabinet 100 and are introduced therein. of the heat exchanger 500 for generating heat exchange between the turbofan 200 and the turbofan 200 that is accommodated in the cabinet 100 and pressurizes the heat-exchanged air and discharges it to the outside of the cabinet 100 . It may be configured to include an electric motor 410 for generating rotational driving force, and a fan housing 300 for rotatably accommodating the turbofan 200 .

The cabinet 100 may have a rectangular parallelepiped shape, and an empty space is formed therein, and the above-described parts are installed therein.

The rear surface 140 of the cabinet 100 is opened as a whole to form a suction port 141 , and a rear cover (not shown) is detachably coupled to the opened rear surface 140 .

At least one fixing member for detachable coupling may be provided on the rear cover, and a means known in the art such as a clip may be applied to the fixing member.

On the other hand, the rear cover may further include a filter member (not shown) for filtering foreign substances contained in the air introduced into the air through the suction port 141 .

An outlet 111 through which air is discharged is formed on the front side 110 of the cabinet 100 . In order to reduce the resistance of flowing air and reduce noise, the outlet 111 is formed to have an elliptical shape as shown, and the outlet 330 of the fan housing 300 to be described later in correspondence to the shape of the outlet 111. The shape may also be determined.

The upper surface 130 of the cabinet 100 is entirely open, and the upper surface cover 131 shown in FIG. 1 is detachably coupled to the opened upper surface 130 . Fixing tabs 123 extending toward the outside of the cabinet 100 are integrally formed on the upper end of the left side 122 and the upper end of the right side 121 for coupling the upper cover 131 . A plurality of bolt holes 124 extending through bolts (not shown) as fastening means may be formed in each of the fixing tabs 123 .

Meanwhile, the heat exchanger 500 is installed adjacent to the suction port 141 formed on the rear surface 140 of the cabinet 100 . The heat exchanger 500 heats the air sucked in from the suction port 141 with the refrigerant to fill the inner space of the cabinet 100 with the heat-exchanged air.

The heat exchanger 500 is preferably disposed as close to the suction port 141 as possible so that the air introduced through the suction port 141 can pass through the heat exchanger 500 . The type of the applied heat exchanger 500 is not limited, but in consideration of heat exchange efficiency and cost, a plurality of heat exchange fins 550 and a refrigerant extending through the heat exchange fin 550 and generating a phase change of the refrigerant therein A type of heat exchanger 500 including a tube 540 may be applied.

On the other hand, as shown in FIG. 2 , the heat exchanger 500 according to an embodiment of the present invention includes a body 510 and a body 510 substantially parallel to the rear surface 140 of the cabinet 100 . ) is integrally formed on the right end of the first bent portion 520 bent and extended inwardly from the right end, and is integrally formed on the left end of the body portion 510 and is bent inwardly from the left end to extend It is configured to include a second bent portion (530).

That is, the heat exchanger 500 according to an embodiment of the present invention includes a refrigerant pipe 540 through which a refrigerant flows and a heat exchange fin 550 as in the prior art. However, both end sides are configured to be bent toward the inside, preferably toward the fan housing 300 to be described later.

Accordingly, the heat exchange performance is maintained at a level equal to or higher than that of the prior art, and the size in the left and right directions occupied by the heat exchanger 500 can be significantly reduced.

On the other hand, a supply pipe 31 for supplying a refrigerant to the refrigerant pipe 540 and a recovery pipe 32 through which the refrigerant after heat exchange is recovered are connected to the right end of the first bent part 520 .

The air heat-exchanged from the heat exchanger 500 is sucked in by the turbofan 200 disposed in the inner center of the cabinet 100 and then discharged to the outside of the cabinet 100 .

As the turbofan 200 according to an embodiment of the present invention, a turbofan 200 of a type known in the art is applicable.

However, as shown in FIG. 2 , in the turbofan 200 according to an embodiment of the present invention, the rotating shaft S is disposed to extend vertically between the upper surface 130 and the lower surface of the cabinet 100 . That is, the rotation axis S of the turbofan 200 is configured to be disposed in a direction substantially parallel to the vertical axis (Z axis).

Therefore, the size in the vertical axis (Z axis) direction can be significantly reduced compared to an air conditioner to which a sirocco fan having a direction parallel to the horizontal axis (Y axis) is applied as in the prior art.

Furthermore, the turbofan 200 according to an embodiment of the present invention is configured to introduce heat-exchanged air through the upper and lower portions at the same time. Through this, suction efficiency can be remarkably improved compared to a conventional air conditioner in which air is introduced through only one of the upper part or the lower part, and at the same time, noise can be effectively reduced.

To this end, as will be described later, in the upper and lower portions of the fan housing 300 accommodating the turbo fan 200 , the first inlet 310 through which heat-exchanged air is introduced toward the center upper and lower center of the turbofan 200 . and a second inlet 320 is formed.

In addition, the electric motor 410 for driving the turbofan 200 so that the heat-exchanged air can be simultaneously introduced through the upper and lower portions of the turbofan 200 in the lateral direction (Y-axis direction) from the turbofan 200 . placed in a spaced apart location.

In more detail, as shown in FIG. 2 , the electric motor 410 for generating and providing rotational driving force to the turbofan 200 is configured to be disposed adjacent to any one of both side surfaces 120 of the cabinet 100 . .

2 illustrates an exemplary embodiment in which the electric motor 410 is installed under the right side 121 of the cabinet 100 with reference to the drawings. However, the present invention is not limited thereto, and the position of the electric motor 410 may be arranged at any position that does not interfere with the flow of air flowing into the turbofan 200, and such modifications are within the scope of the present invention. of course it belongs For convenience, the following description will be made based on an example in which the electric motor 410 is installed under the right side 121 of the cabinet 100 .

On the other hand, in this way, the electric motor 410 is disposed at a position that does not interfere with the flow of air flowing into the turbofan 200 , preferably at a position spaced apart from the turbofan 200 in the lateral direction (Y-axis direction). By doing so, the vertical direction (Z-axis direction) size of the air conditioner 10 can also be reduced compared to the prior art.

However, since the electric motor 410 is disposed at a position spaced apart from the turbofan 200 in the lateral direction (Y-axis direction), the duct-type air conditioner 10 according to an embodiment of the present invention has the electric motor 410 ) further includes a universal joint 420 as a means for transmitting the rotational driving force of the turbofan 200 .

That is, as shown in FIGS. 2 and 3 , the output shaft 411 of the electric motor 410 extends in a direction crossing the rotation shaft S of the turbofan 200 .

Accordingly, the universal joint 420 is provided as a means for effectively connecting the output shaft 411 of the electric motor 410 having intersecting directions and the rotation shaft S of the turbofan 200 while minimizing power loss.

The universal joint 420 according to the embodiment of the present invention is applicable to having any form known in the art. However, the universal joint 420 according to the embodiment of the present invention to connect the output shaft 411 of the electric motor 410 extending in the horizontal direction and the rotation shaft S of the turbo fan 200 arranged in the vertical direction. is configured to include at least three shafts.

In more detail, as shown in FIGS. 3 and 4, the universal joint 420 includes a horizontal shaft 421 extending in a horizontal direction (Y-axis direction) and a vertical shaft extending in a vertical direction (Z-axis direction) ( 425 , and an intermediate shaft 423 connecting the horizontal shaft 421 and the vertical shaft 425 .

One end of the horizontal shaft 421 is detachably connected to the output shaft 411 of the electric motor 410 and the other end is connected to one end of the intermediate shaft 423 .

The horizontal shaft 421 is formed substantially parallel to the bottom surface 150 of the cabinet 100 to minimize interference with other members, and the bottom surface 150 of the cabinet 100 and the lower part of the fan housing 300 . It extends along the first clearance G1 between the

A plunger or flange (not shown) is formed at one end of the horizontal shaft 421 , and may be detachably coupled to the output shaft of the electric motor 410 . Through this, when a failure of the electric motor 410 occurs, the separation can be made simply by releasing the coupling of the plunger of the horizontal shaft 421 .

Therefore, it is possible to disassemble and replace only the electric motor 410 itself after separating the horizontal shaft 421 without the need to disassemble the entire sirocco fan and duct assembly for replacement or repair of the electric motor 410 as in the prior art. . Accordingly, the cost and time for disassembly and replacement of the air conditioner 10 can be significantly reduced.

Meanwhile, the vertical shaft 425 has one end connected to the other end of the intermediate shaft 423 and the other end connected to the fan hub 220 of the turbofan 200 .

The vertical shaft 425 extends through the second inlet 320 of the fan housing 300 to be described later in a generally vertical direction (Z-axis direction), in detail, in a direction perpendicular to the bottom surface 150 of the cabinet 100 . and the other end is forcibly connected to the fan hub 220 and finally serves to transmit rotational power to the turbofan 200 .

A plunger or a flange (not shown) may be provided at the other end of the vertical shaft 425 to be detachably connected to the fan hub 220 of the turbofan 200 .

The intermediate shaft 423 serves to connect the aforementioned horizontal shaft 421 and the vertical shaft 425 .

As described above, the horizontal shaft 421 extends in the horizontal direction, and the vertical shaft 425 extends in the vertical direction.

Therefore, the horizontal shaft 421 that transmits the rotational driving force and the vertical shaft 425 that receives the rotational driving force have an angular position that cannot be directly connected through a general universal joint.

To this end, the horizontal shaft 421 and the vertical shaft 425 are connected through an intermediate shaft 423 extending at an extension angle or an elevation angle greater than approximately 0 degrees and smaller than 90 degrees so that the rotational driving force is smoothly transmitted. will do For example, the extension angle of the intermediate shaft 423 may be 45 degrees.

That is, by making the angle between the horizontal shaft 421 and the intermediate shaft 423 to be 45 degrees and the angle between the vertical shaft 425 and the intermediate shaft 423 to be 45 degrees, the horizontal shaft 421 and the intermediate shaft 423 are ) The first joint 422 provided between and the second joint 424 provided between the vertical shaft 425 and the intermediate shaft 423 can be applied to have the same structure and form, thereby reducing the manufacturing cost. can be

Meanwhile, the fan housing 300 serves both to accommodate the turbofan 200 therein and to form a flow space for air pressurized by the turbofan 200 .

The fan housing 300 has a spherical outer shape opened by cutting the upper and lower portions, and the inside is hollow to accommodate the turbofan 200 and form an air flow space.

The opened lower portion of the fan housing 300 functions as the first inlet 310 , and the opened upper portion of the fan housing 300 functions as the second inlet 320 . At this time, the first inlet 310 and the second inlet 320 are formed to be concentric with the rotation shaft of the turbofan 200 in consideration of the inflow or suction efficiency of the heat-exchanged air.

In addition, as described above, the bottom surface 150 of the cabinet 100 and the lower first inlet of the fan housing 300 allow the heat-exchanged air to be introduced at the same time through the first inlet 310 and the second inlet 320 . A first clearance G1 is formed between the 310 , and a second clearance G2 is formed between the upper surface 130 of the cabinet 100 and the upper second inlet 320 of the fan housing 300 .

In this case, the first clearance G1 and the second clearance G2 may be set to be identical to each other in order to reduce air flow resistance and reduce noise.

As described above, the inner circumferential surface of the fan housing 300 and the outer circumferential end of the turbofan 200 are spaced apart from each other by a predetermined distance to form an air flow space or channel.

However, the distance between the inner circumferential surface of the fan housing 300 and the outer circumferential end of the blade 210 of the turbo fan 200 is configured to change along the air flow direction, and preferably gradually increases along the air flow direction. made to be larger.

2, the distance between the inner peripheral surface of the fan housing 300 and the outer peripheral end of the turbo fan 200 is the smallest on the side opposite to the outlet 330 with the rotation axis S of the turbo fan 200 as the center, and , as the air moves toward the outlet 330 , the gap gradually increases.

In more detail, the cross-sectional area (D) of the air flow space or channel is gradually increased from the position where the cutoff (CO) is formed, and through this, the dynamic pressure of the air is restored to a static pressure while passing through the cutoff (CO) to the discharge port 330 ), the static pressure of the air is restored to the maximum before passing.

Through this, a sudden pressure drop of the air passing through the outlet 330 can be prevented, thereby minimizing the flow loss of air and improving the efficiency of the turbofan 200 .

As such, the configuration of the air flow path may be relatively simple in such a way that the rotational center of the circular turbofan 200 is eccentrically upward from the center of the fan housing 300 having a circular cross-section to the upper side based on the drawing. Therefore, it is possible to configure the flow path of the flow path air relatively simply and compactly without designing the duct with a complicated shape as in the prior art.

Through this, the overall manufacturing cost of the duct-type air conditioner 10 can be reduced, and the overall structure can be made compact.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various methods can be obtained by those skilled in the art within the scope of the technical spirit of the present invention. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

10: duct type air conditioner
100: cabinet
200: turbo fan
300: fan housing
400: driving unit
410: electric motor
420: universal joint
500: heat exchanger

Claims (10)

a cabinet that forms an outer body, an intake port is formed at the rear side, and an outlet port is formed at the front side;
a heat exchanger for generating heat exchange between the air introduced through the inlet and the refrigerant; and
a turbofan accommodated in the cabinet, pressurizing the air heat-exchanged by the heat exchanger and discharging it through the outlet;
including,
A rotation shaft of the turbofan extends vertically between an upper surface of the cabinet and a lower surface of the cabinet.
In claim 1,
Further comprising an electric motor generating rotational driving force of the turbofan,
The electric motor is a position spaced apart from the turbofan in a lateral direction and is disposed adjacent to any one of both side surfaces of the cabinet.
In claim 2,
The output shaft of the electric motor extends in a direction crossing the rotation axis of the turbofan.
In claim 3,
Further comprising a universal joint for transmitting the rotational driving force of the output shaft of the electric motor to the turbofan,
The universal joint is a duct type air conditioner detachably connected to the output shaft of the electric motor.
In claim 4,
The universal joint is
a horizontal shaft having one end detachably connected to the output shaft of the electric motor;
an intermediate shaft having one end connected to the other end of the horizontal shaft;
a first joint connecting the other end of the horizontal shaft and one end of the intermediate shaft;
a vertical shaft having one end connected to the other end of the intermediate shaft and the other end connected to the fan hub of the turbofan;
a second joint connecting the other end of the intermediate shaft and one end of the vertical shaft;
A duct-type air conditioner comprising a.
In claim 5,
The horizontal shaft extends in a direction parallel to the bottom surface of the cabinet,
The vertical shaft extends in a direction perpendicular to a bottom surface of the cabinet.
In claim 1,
and a fan housing disposed inside the cabinet and rotatably accommodating the turbofan,
A first inlet and a second inlet through which the heat-exchanged air is introduced are formed in upper and lower portions of the fan housing toward the central upper and lower central of the turbofan, respectively;
A duct type air conditioner in which a discharge port corresponding to the discharge port of the cabinet is formed in front of the fan housing.
In claim 7,
A distance between the inner surface of the fan housing and the turbofan is gradually increased while proceeding from the rear of the fan housing to the front.
In claim 8,
the heat exchanger,
a body portion disposed between the rear surface of the cabinet and the fan housing;
a first bent part integrally formed with the right end of the main body and bent and extended from the right end toward the fan housing; and
a second bent part integrally formed on the left end of the main body and bent and extended from the left end toward the fan housing;
A duct-type air conditioner comprising a.
10. In claim 9,
The main body of the heat exchanger is a duct type air conditioner that is arranged in parallel to the rear of the cabinet.

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