KR20070069571A - Air-conditioner - Google Patents

Abstract

An air conditioner is provided to mount a heat exchanger long in the longitudinal direction of a cabinet to reduce a space occupied by the heat exchanger while obtaining a high wind volume, thereby obtaining a minimized slim indoor unit. An air conditioner includes a cabinet(10) formed long in the longitudinal direction, and having inlets(11) formed at both sides of a lower part for inhaling atmospheric air and an outlet head(20) formed with an outlet at an upper end for discharging heat exchanged air in one or more directions by a blower unit. A heat exchanger(90) is mounted in the cabinet in the diagonal direction for carrying out heat exchange with the atmospheric air moving by the blower unit.

Description

Air Conditioner {Air-Conditioner}

1 is a perspective view showing a first embodiment of an air conditioner according to the present invention.

FIG. 2 is a longitudinal sectional view of the air conditioner shown in FIG. 1. FIG.

Figure 3 is a perspective view of the main portion showing a coupling state of the blowing fan and the motor of Figure 1;

4 is a perspective view of the orifice of FIG.

FIG. 5 is a perspective view illustrating a resonator installed in the orifice of FIG. 4. FIG.

6 is a perspective view illustrating the discharge head of FIG. 1.

7 is a longitudinal sectional view showing a second embodiment of an air conditioner according to the present invention;

8 is a longitudinal sectional view showing a third embodiment of an air conditioner according to the present invention;

9 is a longitudinal sectional view showing a fourth embodiment of an air conditioner according to the present invention;

<Description of the reference numerals for the main parts of the drawings>

10 cabinet 20 discharge head

30: air guide 40: blowing fan

50: motor 60: motor supporter

70: support frame 80: orifice

90: heat exchanger

The present invention relates to an air conditioner, and more particularly, to an air conditioner capable of improving the structure to reduce noise and at the same time reduce the overall size of the system.

In general, an air conditioner is a device that cools and / or heats an indoor space by performing a process of compressing, condensing, expanding, and evaporating a refrigerant.

The air conditioner includes an outdoor unit and an indoor unit connected to the outdoor unit. The air conditioner is divided into a general air conditioning system in which one indoor unit is connected to the outdoor unit, and a multi air conditioning system in which a plurality of indoor units are connected to the outdoor unit. In addition, the air conditioning system is divided into a cooling system for operating only one direction of the refrigerant cycle to supply only cold air to the room, and a cooling and heating system for supplying cold air or warmth to the room by selectively operating the refrigerant cycle in both directions.

The air conditioning system basically forms a refrigeration cycle consisting of a compressor, condenser, expansion valve and evaporator. The gas refrigerant compressed by the compressor flows into the condenser to change phase into a liquid refrigerant. The refrigerant in the condenser releases heat to the outside while the phase change. Thereafter, the refrigerant discharged from the condenser is expanded through the expansion valve and flows into the evaporator. The liquid refrigerant introduced into the evaporator is phase changed into a gaseous refrigerant. Likewise, the refrigerant absorbs external heat while changing phase in the evaporator.

However, a conventional air conditioner is not only limited to the installation position and direction of the blower fan in design, but also has a problem that it is very difficult to miniaturize and slim down the air conditioner because the size of the blower fan for the high air volume.

In addition, the conventional air conditioner has a problem that the time required for cooling and heating the indoor space is long because the air is sucked in the front direction of the cabinet, the air is discharged in the front direction.

In addition, the conventional air conditioner is not provided with a structure that can reduce the noise caused by the vibration of the motor and the noise of the air flow. Therefore, there is a problem that the unobtrusive noise is transmitted to the user as it is, reducing the reliability of the product.

In addition, since the discharge port of the conventional air conditioner is always exposed to the outside regardless of whether the air conditioner is operated, there is a problem that foreign matter is caught in the discharge port.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an air conditioner that can reduce the overall size of the system.

Another object of the present invention to provide an air conditioner that can reduce the noise inside the cabinet.

Still another object of the present invention is to provide an air conditioner capable of efficiently cooling and heating an indoor space.

Still another object of the present invention is to provide an air conditioner capable of maintaining a clean state regardless of driving.

In order to achieve the above object, the present invention is a cabinet formed long along the longitudinal direction, provided on both sides of the lower end of the cabinet and both sides of the inlet for intake of outside air, air provided in the upper end of the cabinet and heat exchanged in one or more directions Air including a discharge head having a discharge port for discharging gas, a blower for forcibly flowing the sucked outside air in the direction of the discharge port, and a heat exchanger installed in the cabinet in a vertical direction up and down to heat exchange the outside air flow by the blower. Provide a harmonizer.

The blower may include one or more axial flow fans installed above the inlet and a motor for driving the axial flow fans.

When a plurality of axial flow fans are installed, the motor is preferably a biaxial motor provided between the axial flow fans.

In addition, the blower may include a two-suction sirocco fan and a motor for driving the two-suction sirocco fan installed between the both inlet.

One side of the heat exchanger may be installed in close proximity to the blower, and the other side may be installed in close proximity to the discharge head.

In addition, the blower may include a cross flow fan installed near the discharge port and a motor installed on one side of the cross flow fan.

One side of the heat exchanger may be installed in close proximity to the blower, and the other side may be installed in close proximity to the inlet.

According to another embodiment of the present invention, the present invention is provided in a cabinet formed long along the longitudinal direction, provided on both sides of the lower end of the cabinet and the inlet for both sides of the outside air suction, air provided in the upper end of the cabinet and heat exchanged in one or more directions A suction suction sirocco fan is installed between the inlet outlets, the two inlet inlet, and forced to flow the suctioned air upwards, and is located between the two suction sirocco fan and the discharge port in the longitudinal direction of the cabinet It provides an air conditioner including a heat exchanger is installed so that the length is installed longer than the length installed in the thickness direction of the cabinet.

According to another embodiment of the present invention, the present invention is provided in a cabinet elongated in the longitudinal direction, the inlet provided in the lower end of the cabinet and the outside air suction, provided in the upper end of the cabinet, the air heat exchanged in one or more directions A discharge head having a discharge port through which the discharge is discharged, a multi-stage axial fan which is installed in the upper portion of the inlet in order to suck the outside air and forcibly flows the sucked outside air upwards, a flow having a resonator for reducing the noise inside the cabinet An air conditioner including an adjustment member and a heat exchanger positioned between the multi-stage axial fan and the discharge port and heat-exchanging the sucked air and the refrigerant.

The heat exchanger may be installed in a vertical direction in the cabinet.

According to another embodiment of the present invention, the present invention is a cabinet formed in a longitudinal direction, provided on both sides of the lower end of the cabinet and the inlet for intake of outside air, movable in the vertical direction from the upper end of the cabinet and more than one direction A discharge head having a discharge port through which the air heat-exchanged is discharged, a cross flow fan installed in a lower portion of the discharge head, forcibly flowing air in the cabinet, and positioned between the cross flow fan and the inlet port, It is provided in an up and down diagonal direction to provide an air conditioner including a heat exchanger for heat-exchanging the outside air flowing by the crossflow fan.

Hereinafter, with reference to the accompanying drawings, it will be described in detail preferred embodiments of the air conditioner according to the present invention.

1 and 2, a configuration of a first embodiment of an air conditioner according to the present invention will be described.

The air conditioner includes a cabinet 10 forming an outer shape, a heat exchanger 90 installed inside the cabinet, a blower for forcibly flowing air in the cabinet, and a smooth air flow in the cabinet. It is configured to include a flow control member.

The cabinet 10 is formed long in the longitudinal axis direction of the cabinet to slim the overall size. The cabinet 10 has a rectangular cross section, but is not limited thereto, and may have a circular cross section as well as a polygon cross section.

An inlet 11 is formed at a lower end of the cabinet to allow air to flow into the cabinet 10. The inlet 11 is formed on both sides of the cabinet 10 to facilitate the intake of air.

In addition, the upper end of the cabinet is provided with a discharge head 20 having a discharge port 25 through which the heat exchanged air in the cabinet is discharged. Detailed description thereof will be described later.

In addition, a blower is installed inside the cabinet. Specifically, the blower is installed between the heat exchanger 90 and the inlet 11. The blower includes a blower fan 40 having a plurality of blades and a motor 50 for driving the blower fan.

The motor 50 is installed below the blowing fan, the motor shaft of the motor is coupled to the blowing fan 40 to rotate. The motor is supported by the support frame 70, the support frame 70 is fixed to the inside of the cabinet. Detailed description of the coupling state of the blower fan and the motor will be described later.

The flow regulating member serves as a passage for increasing the positive pressure and constantly blowing a large amount of wind when the air is blown by the rotation of the blowing fan 40. Orifice 80, which is a form of the flow regulating member, is a cylindrical container having an upper and a lower part opened, and is installed around the outside of the blower.

An air guide 30 is installed at an upper portion of the blower to prevent the airflow discharged from the blower fan from flowing backward. The air guide 30 also serves as a muffler to reduce noise. In addition, the air guide 30 may also serve to support the discharge head 20.

The air guide 30 includes a case 31 forming an outer shape, a protrusion guide 33 protruding from the lower surface of the case, and upper and lower guide holes 35a and 35b formed on the upper and lower surfaces of the case. do.

The protruding guide 33 serves to prevent backflow of air generated when the air discharged by the blowing fan hits the air guide. The protruding guide 33 is protruded in a cone shape at the center of the lower surface of the case. That is, the protruding guide 33 is formed to have a predetermined inclination angle so that the air located in the upper portion of the blower fan smoothly escapes. Of course, the shape of the protruding guide may have any shape. For example, even if the protruding guide has a streamlined shape or a cylindrical shape, almost the same effect can be expected.

In addition, the upper and lower guide holes 35a and 35b serve as a muffler to reduce the flow noise. The air introduced through the lower guide hole 35a diffuses inside the case of the air guide and then exits through the upper guide hole 35b to the discharge port of the discharge head. At this time, the flow noise is reduced by the principle of the inflatable silencer, detailed description of this principle is omitted.

Meanwhile, a heat exchanger 90 is disposed between the blower and the discharge head 20 to heat exchange the sucked air with the refrigerant. The heat exchanger 90 is installed longer in the longitudinal direction of the cabinet than the length installed in the thickness direction of the cabinet. Specifically, the heat exchanger is installed in a vertical direction in the interior of the cabinet.

Referring to Figure 3, the state in which the motor and the blowing fan according to the present invention will be described.

Blowing fan 40 for forcibly flowing air comprises a cylindrical hub 43 and a blade 41 formed on the outer peripheral surface of the hub. The hub 43 is coupled to the rotating shaft 51 of the motor to rotate to flow air.

The motor includes a motor body 53, a rotation shaft 51 provided at the center of the motor body, and a motor leg 55 extending downward from the motor body 53. The motor legs 55 are provided in plural at regular intervals, and the leg legs 55a having a predetermined shape are formed in the motor legs 55.

The motor 50 is installed and supported by a motor mount installed under the motor. The motor mount includes a motor supporter 60 directly coupled to the motor, and a support frame 70 coupled to the motor supporter 60.

The motor supporter 60 includes a plate 61 forming a bottom surface and fastening legs 62 and 63 extending upwardly from the plate. The plate 61 is provided with a plurality of plate holes 61a having a predetermined shape. The fastening legs 62 and 63 are formed at intervals corresponding to the motor legs 55. The fastening legs 62 and 63 include a lower fastening portion 62 which contacts the plate 61 and an upper fastening portion 63 having a predetermined step with the lower fastening portion.

A step difference between the upper fastening portion 63 and the lower fastening portion 62 is substantially the same as the thickness of the motor leg 55. Therefore, since the motor leg is installed outside the upper fastening portion 63, the combined thickness of the upper fastening portion 63 and the motor leg 55 is substantially the same as the thickness of the lower fastening portion 62. In addition, a fastening hole 63a corresponding to the leg hole 55a formed in the motor leg 55 is formed in the upper fastening part 63.

The support frame 70 includes a supporter mounting portion 73 provided for fixing the motor supporter 60, four frame supporters 75 extending in four directions from the supporter mounting portion 73, and the frame supporter. An out frame 71 that connects the outer ends of the 75 with each other.

The supporter mounting portion 73 is provided with a mounting hole 73a corresponding to the plate hole 61a provided in the motor supporter. In addition, the supporter mounting portion 73 has a bead 73b for reinforcing strength while connecting the mounting hole 73a to have a cross shape.

In addition, an elastic member 77 is installed between the plate hole 61a and the mounting hole 73a to increase fastening force and reduce noise. Specifically, the elastic member 77 serves to suppress the transmission of vibration by the motor to the support frame. The elastic member 77 is formed with a through hole through which the fastening member can pass.

In addition, between the motor and the blowing fan, intermediate connecting members 57 and 58 for connecting the rotating shaft 51 and the blowing fan 40 of the motor are provided. The intermediate connecting members 57 and 58 have a shape corresponding to the rotating shaft to prevent the rotating shaft from being idle. In addition, the intermediate connecting members 57 and 58 also serve to prevent the vibration generated by the motor from being transmitted to the blowing fan 40.

4 and 5, the structure of the flow control member according to the present invention will be described.

Orifice 80, which is a form of the flow regulating member, is a cylindrical container having an upper / lower portion open, and has a substantially symmetrical shape on the left and right with respect to the central axis. In addition, the inner side of the orifice 80 surrounds the blowing fan, and the outer side is installed to be adjacent to the inner wall surface of the cabinet 10.

In addition, the lower end portion 83 of the orifice through which air is introduced and the upper end portion 81 of the orifice through which the air flows are gradually expanded from the inner side to the outer side. That is, the lower end / top end of the orifice has a curved shape with a predetermined curvature.

In addition, a resonator 85 is provided on the outer surface of the orifice 80 to reduce noise in a specific frequency band. The resonator 85 varies in size depending on the frequency of the noise to be removed. That is, the frequency to be removed is determined by the resonator 85 by the horizontal length b, the vertical length c, the height a and the inlet length l and the inlet diameter d.

6, the structure of the discharge head according to the present invention will be described in detail.

The discharge head 20 includes an upper discharge plate 21 installed on the upper surface, a lower discharge plate 22 installed on the lower surface, and a plate support member 24 connecting the upper discharge plate and the lower discharge plate. do.

The upper discharge grill 21a is installed at the center of the upper surface of the upper discharge plate 21. The upper discharge grill 21a serves as a passage for discharging air introduced into the discharge head to the upper part of the cabinet.

The plate support member 24 is installed at an edge portion of the discharge head, and the plate support member 24 is provided with a plurality of louvers 23. The louvers 23 form a side surface of the discharge head with a predetermined interval up and down, and form an outlet 25 through which air is discharged.

Therefore, the air introduced into the discharge head is discharged to the upper part of the cabinet through the upper discharge grill 21a or discharged to the front, rear, left and right of the cabinet through the discharge port 25.

On the other hand, the discharge head 20 is hidden in the cabinet during non-operation, and is raised to expose to the outside of the cabinet during operation. Specifically, when the air conditioner is operated, a driving device (not shown) installed in the air guide moves the discharge head 20 upward.

At this time, the coupling guide 26 provided in the discharge head is moved upward along the guide groove 37 provided in the air guide. The coupling guide 26 is formed integrally with the lower discharge plate 22, and the guide groove 37 is formed on the side of the air guide. Thereafter, when the movement of the coupling guide 26 ends, that is, when the discharge head is exposed to the outside of the cabinet, the heat-exchanged air passes through the discharge port 25 or the upper discharge grill 21a of the discharge head. Is discharged.

The driving device for elevating the discharge head 20 includes a drive motor and a power transmission means. For example, the driving device may be a variety of methods such as a ball screw method or a rack and pinion structure using a drive motor.

The air conditioner of the present invention configured as described above operates as follows.

When the user operates the air conditioner, the refrigerant is supplied from the outside to the heat exchanger 90 installed in the indoor unit. At the same time, the motor 50 is operated, and the blower fan 40 starts to rotate by the motor.

At the same time, the discharge head 20 moves in the upper direction of the cabinet, and air is introduced through the inlet 11 of the lower end of the cabinet 10. The introduced air flows from the lower portion of the blower fan 40 to the upper portion, and then exchanges heat with the refrigerant while passing through the heat exchanger 90.

At this time, the orifice 80 serves to facilitate the inflow and outflow of air, and the air guide 30 serves to reduce the noise and at the same time prevent the backflow of the discharged air.

The air passing through the air guide flows into the discharge head 20 and is discharged into the indoor space through the upper discharge grill 21a or the discharge port 25.

When the heating is to be performed by the air conditioner as described above, the refrigeration cycle may be reversely operated so that the heat exchanger installed in the room may radiate the heated air to the room.

7, a second embodiment of an air conditioner according to the present invention will be described.

The air conditioner includes a cabinet 10 forming an outer shape, a heat exchanger 90 installed inside the cabinet, and a discharge head 20 installed on an upper portion of the cabinet.

Of course, the inside of the cabinet is provided with an air guide 30 to prevent the back flow of air and reduce noise. Detailed description of the above components is the same as described in the above-described first embodiment and will be omitted.

However, the air conditioner according to the present embodiment, unlike the above-described embodiment, a blower capable of obtaining a high air volume is installed inside the cabinet. In addition, an orifice 180 is installed to smoothly flow the air.

The blower includes a multistage axial fan (141, 142) for forcibly flowing air in the cabinet, a biaxial motor (150) for driving the multistage axial fan, and a biaxial motor mount (170) on which the biaxial motor is installed.

The multi-stage axial fan 141, 142 is a first axial fan 141 installed on the upper of the two-axis motor 150 and the second axial fan installed on the lower of the two-axis motor 50 based on the biaxial motor 150. 142. The first axial fan 141 and the second axial fan 142 are coupled to the first and second rotation shafts 151 and 152 of the biaxial motor, respectively. Thus, the first axial fan 141 and the second axial fan 142 rotate at the same rotational speed.

The biaxial motor 150 is installed between the first axial fan 141 and the second axial fan 142 and is installed through the biaxial motor mount 170. The biaxial motor mount 170 penetrates through the orifice 180 and is coupled to an inner surface of the cabinet. Of course, the two-axis motor mount may be installed coupled to the inner surface of the orifice. In addition, the orifice may be installed to surround the corresponding axial fan by the number of each axial fan.

The present invention is not limited to the above-described embodiment, and the multi-stage axial fan may be sequentially installed in a motor having one rotation shaft. At this time, the axial fans are rotated at the same rotational speed.

In addition, the blower may include a plurality of motors and a plurality of axial flow fans equal to the number of the motors. At this time, the plurality of motors are coupled to each axial fan and rotate independently of each other.

Referring to Fig. 8, a third embodiment of the air conditioner according to the present invention will be described.

The air conditioner according to the present embodiment is a cabinet 10 forming an outer shape, a heat exchanger 290 installed inside the cabinet, a blower for forcibly flowing the air in the cabinet, the air flow inside the cabinet smoothly Air guide 30 for discharging, the discharge head 20 is installed on the upper portion of the cabinet, and the inlet 11 provided in the lower end of the cabinet.

A lower end of the heat exchanger 290 is installed adjacent to the blower, and an upper end thereof is installed adjacent to the discharge head 20. In addition, the heat exchanger 290 is preferably installed longer than the length installed in the longitudinal direction of the cabinet thickness direction. Specifically, the heat exchanger may have a shape substantially similar to that of the jet Z, or may have a shape inverting the jet.

The blower includes a double suction sirocco fan 240 for forcibly flowing air in the cabinet and a motor 250 installed inside the double suction sirocco fan.

The two suction sirocco fan 240 is installed between both inlets 11 formed on both sides of the lower end of the cabinet. When the motor 250 is operated, the motor shaft formed in the motor rotates the double suction sirocco fan 240, and the double suction sirocco fan 240 sucks air from both side inlets 11 located on the side. To discharge to the top

Referring to Fig. 9, a fourth embodiment of the air conditioner according to the present invention will be described.

The air conditioner according to the present embodiment includes a cabinet 10 that is formed to extend in a longitudinal direction, both inlets 11 provided at a lower end of the cabinet, a discharge head 20 installed at an upper end of the cabinet, and an interior of the cabinet. A blower for forcibly flowing air, and a heat exchanger (390) for heat exchange between the sucked air and the refrigerant.

The discharge head 20 is located inside the cabinet, that is, around the outside of the air guide 30 when the air conditioner is not in operation. However, when the operation of the air conditioner starts, the discharge head 20 is moved to the upper portion of the cabinet. Detailed description thereof is the same as in the above-described embodiment and thus will be omitted.

An upper end of the heat exchanger 390 is installed adjacent to the blower, and a lower end thereof is installed adjacent to both side inlets 11. In addition, the heat exchanger 390 is preferably installed long in the longitudinal direction of the cabinet. Specifically, the heat exchanger is installed in the form of a multi-stage heat exchanger while layering in the longitudinal direction of the cabinet.

The blower includes a cross flow fan 340 installed in close proximity to the discharge head 20 and a motor 350 installed at one end of the cross flow fan. The motor 350 is installed at one side of the cross flow fan 340, and a rotation shaft (not shown) of the motor passes through a center of the cross flow fan. In addition, a guide guide 345 for guiding the flow of air forced by the cross flow fan is provided outside the cross flow fan.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications without departing from the spirit of the present invention, and such modifications are within the scope of the present invention.

The air conditioner according to the present invention described above has the following effects.

First, the inlet is formed on both sides of the lower end of the cabinet, there is an advantage that can efficiently cool the indoor space by installing a discharge head for discharging air in various directions on the upper end of the cabinet.

Second, by installing the heat exchanger longer in the longitudinal axis direction of the cabinet than in the thickness direction of the cabinet, and by installing a blower fan that can obtain a high air volume while occupying less space, the overall size of the indoor unit can be miniaturized and slimmed.

Third, there is an advantage that can eliminate the specific noise generated in the interior of the cabinet by installing a resonator on the outer surface of the orifice.

Fourth, there is an advantage that it is possible to prevent the foreign matter accumulated in the non-operation accumulated in the discharge port by installing the discharge head exposed to the outside only during operation.

Claims (11)

A cabinet elongated along the longitudinal direction; It is provided on both sides of the lower end of the cabinet, both sides of the inlet for the outside air suction; A discharge head provided at an upper end of the cabinet and having a discharge port through which air heat-exchanged in at least one direction is discharged; A blower for forcibly flowing the sucked outside air toward the outlet; And, And a heat exchanger installed in the cabinet in a vertical direction in a vertical direction to heat exchange the outside air flowing by the blower. The method of claim 1, The air blower includes at least one axial flow fan installed above the inlet and a motor for driving the axial flow fan. The method of claim 2, The motor is an air conditioner, characterized in that the two-axis motor is installed between the axial flow fan. The method of claim 1, The air blower includes an air suction sirocco fan installed between the both inlets and a motor for driving the positive suction sirocco fan. The method of claim 4, wherein One side of the heat exchanger is installed in close proximity to the blower, the other side is installed in close proximity to the discharge head air conditioner. The method of claim 1, The air blower includes a cross flow fan installed near the discharge port and a motor installed on one side of the cross flow fan. The method of claim 6, One side of the heat exchanger is installed in close proximity to the blower, the other side is installed in close proximity to the inlet. A cabinet elongated along the longitudinal direction; It is provided on both sides of the lower end of the cabinet, both sides of the inlet for the outside air suction; An outlet provided at an upper end of the cabinet and discharging air heat-exchanged in at least one direction; A double suction sirocco fan installed between the both inlets to suck outside air and forcibly flow the sucked outside air upward; And, And a heat exchanger disposed between the positive suction sirocco fan and the discharge port, the heat exchanger being installed in a lengthwise direction of the cabinet to be longer than a length installed in the thickness direction of the cabinet. A cabinet elongated along the longitudinal direction; Inlets provided on both sides of the lower end of the cabinet, the inlet for sucking the outside air; A discharge head provided at an upper end of the cabinet and having a discharge port through which air heat-exchanged in at least one direction is discharged; A multi-stage axial fan installed in the upper portion of the inlet in order to suck outside air and forcibly flow the sucked outside air in an upward direction; A flow regulating member having a resonator for reducing noise in the cabinet; And, Located between the multi-stage axial flow fan and the discharge port, the air conditioner including a heat exchanger for heat exchange between the sucked air and the refrigerant. The method of claim 9, The heat exchanger is an air conditioner, characterized in that installed in the vertical direction in the cabinet. A cabinet elongated along the longitudinal direction; Inlets provided on both sides of the lower end of the cabinet, the inlet for sucking the outside air; A discharge head movable upward and downward from an upper end of the cabinet and having an outlet through which air heat-exchanged in at least one direction is discharged; A cross flow fan installed at a lower portion of the discharge head to force flow of air in the cabinet; And, And a heat exchanger disposed between the crossflow fan and the inlet port, the heat exchanger being installed in a lengthwise direction of the cabinet to be longer than a length installed in the thickness direction of the cabinet.

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