WO2012124274A1

WO2012124274A1 - Air conditioner

Info

Publication number: WO2012124274A1
Application number: PCT/JP2012/001418
Authority: WO
Inventors: 正春海老原; 輝夫藤社; 靖人向井; 博基長谷川; 尚希坂本
Original assignee: パナソニック株式会社
Priority date: 2011-03-11
Filing date: 2012-03-01
Publication date: 2012-09-20
Also published as: CN103429966A; JP5071573B2; CN103429966B; JP2012207902A; MY164241A

Abstract

An air conditioner comprising: a front surface section and a ceiling surface section that form the outline of the main body of an indoor unit; a fan arranged inside the main body; a heat exchanger arranged on the upstream side of the fan; a filter arranged on the upstream side of the heat exchanger; an outlet that blows air; an electrical unit; and a corner section bounded by the front surface section, the ceiling surface section, and the filter. As a result of the electrical unit being arranged in the corner section, air can flow between the electrical unit and the heat exchanger, condensation can be prevented, and the width of the outlet can be increased, thus enabling reliability and left/right wind direction performance to be improved.

Description

Air conditioner

The present invention relates to an indoor unit of an air conditioner equipped with an electrical unit.

There are many conventional air conditioner indoor units in which electrical units with a narrow width and a long height and depth are housed in a space on the side of the heat exchanger and fan in the main body. There has been proposed a configuration in which an electrical unit is downsized by arranging an electrical board on which various electrical components are mounted in a vertically placed state (see Patent Document 1).

In addition, a configuration has also been proposed in which indoor electrical products (electrical units) are arranged on the back of the indoor unit chassis or between the front of the indoor heat exchanger and the decorative cover and fixed to the heat exchanger ( Patent Document 2).

JP 2008-82687 A JP-A-8-135998

However, in a state where the electrical unit is disposed on the side surface side of the main body, the space where the electrical unit is disposed cannot be utilized. Therefore, the width of the outlet of the wind circuit cannot be expanded to improve the left / right wind direction performance.

Further, in the configuration in which the indoor electrical product is disposed between the front surface of the indoor heat exchanger and the decorative cover and is fixed to the heat exchanger, the indoor electrical product is directly fixed to the heat exchanger. The product may be cooled and condensation may occur on the electrical appliances in the room.

This invention solves the said conventional subject, and it aims at providing the air conditioner which suppresses that dew condensation arises in an electrical equipment unit while utilizing the space of the side surface side of a main body.

In order to achieve the above object, an indoor unit of an air conditioner of the present invention includes a front surface part and a top surface part that form an outline of a main body of the indoor unit,
A fan disposed in the body;
A heat exchanger disposed upstream of the fan;
A filter disposed upstream of the heat exchanger;
An air outlet that blows out air;
An electrical unit,
An air conditioner comprising the front portion, the top portion, and a corner section defined by the filter,
The electrical unit is disposed at the corner.

According to the present invention, the electrical unit is disposed at the corners defined by the front surface and the top surface and the filter constituting the outer shell of the main body, thereby utilizing the space on the side surface of the main body and the electrical unit. It is possible to suppress the occurrence of condensation.

These aspects and features of the invention will become apparent from the following description, taken in conjunction with the preferred embodiments with reference to the accompanying drawings, in which:
The front view of the indoor unit of the air conditioner in embodiment of this invention Sectional view of the indoor unit along line AA in FIG. Sectional view of the indoor unit along line BB in FIG. (A) Front side perspective view of electrical unit, (b) Cross section of electrical unit along line CC in FIG. 4 (a) FIG. 4A is a rear perspective view of the electrical unit in FIG. Wind speed distribution map of the wind circuit around the electrical unit Wind speed distribution map of wind circuit of general air conditioner Diagram showing the shape of the upper and lower blades The figure which shows the shape of the side wall of an indoor unit

The first invention includes a front surface portion and a top surface portion that form an outline of the main body of the indoor unit,
A fan disposed in the body;
A heat exchanger disposed upstream of the fan;
A filter disposed upstream of the heat exchanger;
An air outlet that blows out air;
An electrical unit,
An air conditioner comprising the front portion, the top portion, and a corner section defined by the filter,
The electrical unit is disposed at the corner. As a result, it is possible to utilize the space on the side surface side of the main body and suppress the occurrence of condensation on the electrical unit.

A second invention is the first invention, wherein the top surface portion is formed with a suction port for sucking air outside the main body,
The fan guides the air sucked from the suction port to the heat exchanger through the corner portion. As a result, since the electrical unit is positioned above the heat exchanger, it is possible to prevent the defrosting water from splashing and to promote cooling of the electrical unit by the air from the outside.

In a third aspect of the present invention, in the first aspect, the wind speed at the corner is the smallest in the wind speed distribution by the fan in the main body. Thereby, since the electrical unit is arranged at a position where the wind speed of the air subjected to heat exchange is the lowest, it is possible to suppress a decrease in heat exchange efficiency.

In a fourth aspect based on the first aspect, the corner portion is located at a position farthest from the fan in the main body. As a result, the resonance of the electrical unit can be reduced, and the malfunction of the electrical component due to vibration can be reduced.

According to a fifth invention, in the first to fourth inventions, the electrical unit includes an electrical board holding member that holds an electrical board on which various electrical components are mounted,
The electric circuit board holding member is arranged to face the filter. Thereby, a wind circuit with little ventilation resistance can be formed between an electrical equipment unit and a heat exchanger.

In a sixth aspect based on the first to fifth aspects, the electrical unit is configured to be horizontally long at the corner portion, and the distance between the electrical unit and the heat exchanger is equal to the vertical width of the electrical unit. It is arrange | positioned so that it may become 20% or more. As a result, the electrical unit can be arranged using the dead space, and since the wind passes between the electrical unit and the heat exchanger, condensation of the electrical unit can be prevented.

According to a seventh invention, in the first to sixth inventions, the electrical unit is arranged 50 mm or more away from the lower end of the suction opening of the filter. As a result, condensation of the electrical unit can be prevented, and adverse effects on the wind speed caused by the electrical unit are reduced. In addition, the suction resistance is reduced to prevent abnormal noise.

In an eighth aspect based on the first to seventh aspects, the electrical unit is disposed so as to extend substantially parallel to the heat exchanger or the filter. As a result, condensation of the electrical unit can be prevented, and the electrical unit can be made compact in the indoor unit.

According to a ninth invention, in the first to eighth inventions, the electrical unit is disposed above the rotation axis of the fan. As a result, condensation of the electrical unit can be prevented and the influence on the wind speed is further reduced.

In a tenth aspect based on the ninth aspect, the electrical unit is arranged above the upper end of the fan. As a result, the condensation of the electrical unit can be prevented and the influence on the wind speed is reduced.

In an eleventh aspect based on the first to tenth aspects, the electrical unit is fixed to a filter frame for attaching the filter to the main body, a side surface of the main body, or a base frame that is a base of the main body. Is. As a result, heat transfer from the heat exchanger can be prevented and condensation of the electrical unit can be prevented.

A twelfth invention is the first to eleventh invention, wherein the front panel formed in the main body is openable and closable,
A drive arm for opening and closing the front panel,
The drive center position of the drive arm is disposed on the upper front side of the electrical unit. As a result, the drive mechanism of the front panel can be arranged using the dead space.

Before continuing the description of the present invention, the same parts are denoted by the same reference numerals in the accompanying drawings. Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment)
An air conditioner used in a general home is usually composed of an outdoor unit and an indoor unit connected to each other through a refrigerant pipe. FIG. 1 is a front view of an indoor unit of an air conditioner according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the indoor unit along line AA in FIG.

As shown in FIG. 2, the indoor unit includes a main body 2 and a movable front panel (not shown) that can open and close the front opening 9a among the openings 9 (the front opening 9a and the upper opening 9b) formed in the main body 2. Hereinafter, it is simply referred to as a front panel). When the air conditioner is stopped, the front panel 4 is in close contact with the main body 2 and closes the front opening 9a. On the other hand, during operation of the air conditioner, as shown in FIG. 2, the front panel 4 moves in a direction away from the main body 2 to open the front opening 9 a.

FIG. 3 is a cross-sectional view of the indoor unit along the line BB in FIG. FIG. 3 shows a state in which the front panel 4 closes the front opening 9a. As shown in FIG. 3, the front surface part that forms the outline of the main body 2 is configured by the front panel 4, and the top surface part that forms the outline of the main body 2 is configured by the top panel 80. The top panel 80 is formed with a suction port 80a (not shown) that is an opening for sucking the air circulated through the room into the main body 2.

As shown in FIG. 2, inside the main body 2, an indoor heat exchanger 6 connected to a compressor (not shown) of an outdoor unit (not shown) by piping, a front opening 9a, and an upper opening 9b. A fan (Fan) 8 is provided for exchanging the indoor air taken in through the heat exchanger 6 and blowing it out indoors. The fan 8 in the present embodiment is a cross-flow fan. Further, in the vicinity of the air outlet 10 of the main body 2, the air outlet 10 that blows heat-exposed air into the room can be opened and closed and the air blowing direction changing blade that changes the air blowing direction up and down (hereinafter simply referred to as “upper and lower blades”). ) 12 and left and right wind direction changing blades (hereinafter simply referred to as “left and right blades”) 14 for changing the air blowing direction to the left and right.

Also, a filter 16 is provided between the opening 9 and the heat exchanger 6 for removing dust contained in room air taken from the opening 9. The filter 16 is attached to the filter frame 3. The filter frame 3 is for attaching the filter 16 to the main body 2. A display unit 41 is provided on the front side of the lower portion of the filter 16 (above the air outlet 10).

The electrical unit 1 provided in the main body 2 of the indoor unit accommodates electronic components related to the operation of the indoor unit. The configuration of the electrical unit 1 will be described with reference to FIGS. FIG. 4A shows a configuration in which the front side of the electrical unit 1 is viewed from an oblique direction. FIG. 4B is a cross-sectional view taken along the line CC in FIG. FIG. 5 shows a configuration in which the electrical unit 1 of FIG. 4A is rotated 180 degrees in the horizontal direction and viewed from the back side.

The electrical unit 1 of the present embodiment includes a base substrate 1f, and further includes an electrical substrate 1a on which various electrical components are mounted, and a power supply box 1b that houses the electrical substrate 1a, on the right half side of the base substrate 1f. Prepare. As shown in FIG. 1, the base substrate 1 f is arranged horizontally (substantially extending in the longitudinal direction of the main body 2) over almost the entire internal width of the main body 2. In addition, the electrical unit 1 includes a drive mechanism device 42b that opens and closes the front panel 4 on the left side. Furthermore, the electrical unit 1 includes a forced operation switch 44 at the left end. A hole 1c is provided in a portion of the base substrate 1f between the power supply box 1b and the drive mechanical device 42b. The hole 1c and the power supply box 1b are formed so as to be adjacent to each other on the left and right sides of the base substrate 1f. The periphery of the hole 1c is reinforced.

As shown in FIG. 2, the heat exchanger 6 includes a front heat exchanger 6b including an inclined surface 6a and a rear heat exchanger 6c, and is combined in an inverted V shape above the fan 8. To be formed. The front heat exchanger 6 b is disposed in front of the rotating shaft 8 c of the fan 8 that extends horizontally along the longitudinal direction of the main body 2.

In the present embodiment, the longitudinal width of the power source box 1b is approximately half the size of the longitudinal width of the front heat exchanger 6b. As shown in FIG. 1, a hole 1c and a drive mechanism device 42b for operating a functional component are arranged in the remaining longitudinal width of the electrical unit 1 excluding the power supply box 1b.

As shown in FIG. 2, the front heat exchanger 6 b is formed with a bent cross section so as to protrude toward the front of the main body 2. The lower end portion of the front heat exchanger 6 b is located below the lower end portion of the fan 8. As shown in FIG. 2, an inclined surface 6a having a constant inclination angle is formed on the upper portion of the front heat exchanger 6b.

As shown in FIG. 2, a filter 16 is disposed so as to cover the outside of the heat exchanger 6 in order to prevent dust in the indoor air from adhering to the heat exchanger 6. Specifically, the filter 16 surrounds the heat exchanger 6 along the inclined surface 6a of the front side heat exchanger 6b from the upper part (upstream side) of the front side heat exchanger 6b and the rear side heat exchanger 6c. Are arranged as follows. That is, the filter 16 is disposed so as to surround the heat exchanger 6 on the upstream side of the heat exchanger 6. Further, the filter 16 is formed with an inclined surface 16 a, and the inclined surface 16 a has substantially the same inclination angle as the inclination angle of the inclined surface 6 a of the heat exchanger 6.

In addition, the fan 8 and the heat exchanger 6 are directly fixed to the frame 5 which is the base (base) of the main body 2. As shown in FIG. 3, in the operation stop state, the front panel 4 closes the front opening 9a and the upper and lower blades 12 are also closed, so that the front panel 4, the top panel 80, and the frame 5 are the main body. 2 outlines are formed. At this time, the inside of the main body 2 is in a substantially closed state.

As shown in FIG. 3, inside the main body 2, the corner 81 is an area defined by the front panel 4, the top panel 80 and the filter 16. The corner 81 is formed to extend in the longitudinal direction of the main body 2 in the internal space of the main body 2.

Also, the electrical unit 1 is disposed at the corner 81. The electrical unit 1 is disposed in the corner 81, particularly in the vicinity of the intersection where the front panel 4 and the top panel 80 intersect. As described above, the filter 16 forming the corner portion 81 is disposed so as to surround the heat exchanger 6 on the upstream side of the heat exchanger 6, so that the electrical unit 1 disposed in the corner portion 81 is also heated. Located upstream from the exchanger.

As shown in FIG. 2, when the indoor unit is in an operating state, the corner portion 81 becomes a part of a wind circuit for sucking the air circulated through the room and exchanging heat with the front heat exchanger 6b.

The air is sucked from the suction port 80 a by the rotation of the fan 8, and the sucked air passes through the corner portion 81. The air that has passed through the corner 81 is guided to the front heat exchanger 6b through the filter 16, and heat exchange is performed. The heat-exchanged air is then blown out from the air outlet 10.

When the air sucked from the suction port 80a described above hits the electrical unit 1 arranged at the corner 81, the air passes through the hole 1c of the electrical unit 1. As shown in FIG. 2, the electrical box 1b is located in front of the front heat exchanger 6b, but the heat exchange efficiency is achieved by the ventilation resistance of the electrical unit 1 by forming the hole 1c next to the electrical box 1b. Can be suppressed. Thus, the hole 1c is for effectively utilizing the suction opening of the filter 16 (opening formed in the filter 16 for sucking air) during operation.

Moreover, since the electrical unit 1 is located above the front heat exchanger 6b, the defrosting water is prevented from being splashed. Moreover, cooling of the electrical unit 1 by air from the outside is promoted.

The corner 81 extending in the longitudinal direction of the main body 2 is formed above the fan 8, and the electrical unit 1 is formed in the corner 81 so as to extend in the longitudinal direction. The electrical unit 1 is arranged so as to extend substantially in parallel with the heat exchanger 6 or the filter 16.

¡With such an arrangement, condensation can be prevented and the electrical unit can be configured compactly in the indoor unit.

As shown in FIG. 2, the electrical unit 1 has the inclination angle substantially the same as the inclination angle of the inclined surface 16a of the filter 16 so that the power supply substrate holding member 1g faces the filter 16 (inclined horizontally). Placed.

With such an arrangement, it is possible to form a wind circuit with less ventilation resistance between the electrical unit 1 and the front heat exchanger 6b.

As shown in FIGS. 4A and 4B, the base substrate 1f of the electrical unit 1 accommodates and fixes a resinous power supply substrate holding member 1g. The power supply board holding member 1g serves as a bottom plate of the power supply box 1b that holds the back surface of the electrical board 1a. The metallic base substrate 1f and the power supply box 1b enclose and store the electrical substrate 1a, whereby the electrical unit 1 is formed.

As shown in FIG. 4B, by forming the outer side wall surface outside the side wall surface of the electric board holding member 1g holding the electric board 1a, the electric board holding member 1g has a double side wall structure. . The base substrate 1f is inserted from below between the double structures of the electrical substrate holding member 1g.

Also, the lid member 1h constituting the power supply box 1b includes a flange portion that fits with the electrical board holding member 1g. The flange portion has a double structure of an inner flange portion 1k and an outer flange portion 1m. The electric circuit board holding member covers the electric circuit board holding member 1g from the outside so that a slight gap formed between the flange part and the side wall surface of the electric circuit board holding member 1g has a trapped shape. Fits 1g.

By being configured as described above, it is possible to prevent foreign matter from entering the electrical unit 1 that accommodates the electrical substrate 1a.

By making the base substrate 1f made of metal, it is possible to cope with incombustibility. In addition, an insulating structure can be formed by housing the electrical board 1a with the resinous electrical board holding member 1g. Even if the main body 2 falls during transportation, damage to the electrical board 1a in the electrical unit 1 can be protected.

Also, as shown in FIGS. 2 and 4A and 4B, the cross section of the lid portion of the power supply box 1b is formed in a trapezoidal shape. Thereby, the front edge part height of the top panel 80 can be made low. Moreover, since the depth dimension from a wall surface can be made small by suppressing the protrusion dimension to the front of the front panel 4, the electrical equipment unit 1 can be made compact.

With the configuration of the electrical unit 1 described above, the width of the wind circuit in the main body 2 and the width of the outlet 10 can be increased.

As shown in FIG. 2, the electrical unit 1 is disposed horizontally at a position away from the inclined surface 6 a of the heat exchanger 6 by a distance D1 of 20 mm or more. The distance D1 is a distance measured in the vertical direction from the inclined surface 6a of the heat exchanger 6 toward the electrical unit 1, and is the shortest distance from the heat exchanger 6 to the electrical unit 1. In addition, the vertical width D2 (width in the short direction of the base substrate 1f) of the electrical unit 1 in the present embodiment is 100 mm. That is, the distance D1 to the heat exchanger 6 is 20% with respect to the vertical width D2 of the electrical unit 1. FIG. 6 shows the state of the wind (wind speed distribution) flowing around the electrical unit 1 when the electrical unit 1 is arranged in this way and the indoor unit is operated.

FIG. 6 shows the flow of wind with an arrow, the wind size (wind speed) is represented by the length of the arrow, and the wind direction (wind direction) is represented by the angle of the arrow. As can be seen from FIG. 6, wind flows over the entire length of the electrical unit 1 also on the back surface of the electrical unit 1 (between the electrical unit 1 and the heat exchanger 6). That is, by arranging the electrical unit 1 so that the distance D1 between the electrical unit 1 and the heat exchanger 6 is 20% or more of the vertical width D2 of the electrical unit 1, the wind flows over the entire rear surface of the electrical unit 1. . Thereby, dew condensation of the electrical unit 1 can be effectively prevented. Further, by providing a distance D1 between the electrical unit 1 and the heat exchanger 6 to ensure a space, it is possible to ensure the workability of attaching and removing the filter 16.

As shown in FIG. 2, the electrical unit 1 is disposed away from the lower end of the suction opening of the filter 16 by a distance D3 of 50 mm or more, thereby ensuring the air volume passing through the upper end of the stabilizer 32. Thereby, suction resistance can be reduced and generation | occurrence | production of abnormal noise can be prevented.

By disposing the electrical unit 1 above the rotational axis 8c of the fan 8 (by disposing above the central position 8a, which is a height position passing through the rotational shaft 8c), the electrical unit 1 becomes a fan. The adverse effect on the wind performance of 8 can be reduced to the maximum. The rotating shaft 8c and the center position 8a are the center in the height direction of the fan 8 in the wind circuit.

Here, the general wind speed distribution of an air conditioner is shown in FIG. As shown in FIG. 7, the upper part of the front surface of the heat exchanger 6 is a stable region because the wind speed is lower than that of other parts. On the other hand, the wind speed is high in the vicinity of the fan 8, in the vicinity of the air outlet 10, in the portion corresponding to the back side of the indoor unit 2, and in the lower front portion of the indoor unit 2. By providing the electrical unit 1 at the corner 81 in the upper front part of the indoor unit, the electrical unit 1 is arranged in a stable region in the wind speed distribution by the fan 8, and the electrical unit 1 improves the wind performance of the fan 8. The adverse effect given can be reduced.

Further, by disposing the electrical unit 1 above the upper end portion (outer peripheral upper portion 8 b) of the fan 8 in the wind circuit at the corner portion 81, the wind speed distribution by the fan 8 is particularly low. The electrical unit 1 is disposed, and the adverse effect of the electrical unit 1 on the wind performance of the fan 8 can be further reduced. Moreover, this can prevent the heat exchange efficiency in the front heat exchanger 6b from being lowered.

In the fan 8 or a fan drive motor (not shown) for rotating the fan 8, vibration is generated by the rotation operation of the fan 8 or the operation operation of the fan drive motor, and the vibration is transmitted to other functional parts and resonates. there's a possibility that. In particular, when an electrical component or the like resonates, the internal electrical substrate 1a may be short-circuited (short-circuited) to cause a malfunction.

Therefore, by disposing the electrical unit 1 at the corner 81 located farthest from the fan 8 in the main body 2, vibrations from the fan 8 and the fan drive motor can be reduced. Thereby, a highly reliable air conditioner can be provided.

By arranging the electrical unit 1 as described above, it is possible to simultaneously reduce the adverse effects on the wind performance and prevent the electrical unit 1 from condensing. In addition, as shown in FIG. 1, the electrical equipment unit 1 can be compactly accommodated in the main body 2 of the indoor unit by forming a section of the electrical equipment unit 1 in a trapezoidal shape instead of a rectangle. it can.

Further, when the front panel 4 is opened and closed as in the present embodiment, the drive center position (drive shaft 42a) of the drive arm 42 that automatically opens and closes the front panel is arranged at the upper front of the electrical unit 1 and dead. By utilizing the space, the outline line of the indoor unit is maintained and good design is ensured. In this case, the drive shaft 42a may be disposed at least below the upper end surface of the indoor unit and inside the outline line on the front surface of the indoor unit.

Moreover, in the air conditioner of the present embodiment, the front panel 4 is opened and closed by the drive arm 42. Thereby, wind can be spread over the whole circumference | surroundings of the electrical equipment unit 1, and it can prevent that dew condensation arises in the electrical equipment unit 1. FIG. Further, when the front panel 4 moves to the front of the main body 2, a front opening 9 a is formed between the front panel 4 and the front heat exchanger 6 b, so that the front panel 4 becomes a guide by the operation of the fan 8. Thus, air can be led to the front heat exchanger 6b. Therefore, even if there is a ventilation resistance due to the arrangement of the electrical unit 1, air is guided to a space (portion corresponding to the distance D1) provided between the electrical unit 1 and the front heat exchanger 6 b. Thereby, the fall of the heat exchange efficiency by the heat exchanger 6 can be suppressed.

Next, the fixed configuration of the electrical unit 1 will be described.

The fan 5, the heat exchanger 6, and the filter automatic cleaning unit 3 are directly fixed to the frame 5. The filter automatic cleaning unit 3 is for automatically cleaning the filter 16. As shown in FIG. 3, the electrical unit 1 is fixed to a filter frame 3 a that forms the skeleton of the automatic filter cleaning unit 3.

As shown in FIGS. 4 and 5, the hooking portion 1d is provided at the right end portion of the base substrate 1f and the claw 1e is provided at the left end portion of the base substrate 1f. The hooking portion 1d and the claw 1e are respectively locked on both sides of the filter frame 3a, whereby the electrical unit 1 is fixed to the filter frame 3a.

Further, as shown in FIG. 1, a terminal plate 43 (Terminal Plate 43) is installed on the right side of the electrical unit 1 for carrying out the electrical work for connecting the indoor unit and the outdoor unit. The left side of the terminal plate 43 is fixed by engaging with a claw (not shown) provided on the right side of the electrical unit 1, and the right side of the terminal plate 43 is a component (not shown) fixed to the frame 5. It is fixed with screws.

Thus, by fixing the electrical unit 1 to the filter frame 3 a, the electrical unit 1 is fixed away from the heat exchanger 6, so there is no heat transfer from the heat exchanger 6, and dew condensation occurs on the electrical unit 1. It can be prevented from occurring. In addition, since the same effect will be acquired if it does not fix to the heat exchanger 6, it may fix to the side surface of the main body 2, or the base frame 5 besides fixing to the filter frame 3a like this Embodiment. good.

Next, the configuration of the outlet 10 will be described.

As shown in FIG. 2, the upper and lower blades 12 are provided with a lower blade 12 a that opens and closes the air outlet 10, and a blowing direction of air blown from the air outlet 10 in cooperation with the lower blade 12 a provided above the lower blade 12 a. And upper blades 12b for controlling the above. The lower blade 12a is connected to a drive shaft (not shown), and the upper blade 12b is connected to another drive shaft (not shown). Each drive shaft is connected to a drive source (not shown) such as a drive motor.

FIG. 8 is a diagram showing the shape of the upper and lower blades. FIG. 9 shows the shape of the side wall of the indoor unit. As shown in FIG. 8, the upper blade 12 b and the lower blade 12 a (not shown) are configured to be longer than the lateral width of the air outlet 10.

When the indoor unit starts operation, as shown in FIG. 2, the upper and lower blades 12 are controlled to open, the air outlet 10 is opened, and the fan 8 is driven. And by the drive of the fan 8, indoor air is taken in the inside of an indoor unit via the front surface opening part 9a and the upper surface opening part 9b. The taken-in room air exchanges heat with the heat exchanger 6 and passes through the fan 8. The air that has passed through the fan 8 passes through the ventilation path 28 formed on the downstream side of the fan 8 and is blown out from the air outlet 10.

Further, the blowing direction of air from the outlet 10 is controlled by the upper and lower blades 12 and the left and right blades 14. The vertical angle of the upper and lower blades 12 and the horizontal angle of the left and right blades 14 are controlled by a remote controller (remote operation device) that controls the indoor unit.

Further, the ventilation path 28 located on the upstream side of the blower outlet 10 includes a rear guider 30 located on the downstream side of the fan 8, a stabilizer 32 (Stabilizer 32) located on the downstream side of the fan 8 and opposed to the rear guider 30, and both side walls. 34.

The term “stabilizer” described above is located near the downstream of the fan 8 and stabilizes the vortex generated near the front of the fan 8, and is located downstream of the stabilizer and conveyed by the fan 8. It can also be divided into a front wall portion of a diffuser responsible for air pressure recovery. In the present embodiment, these are collectively referred to as “stabilizer”.

Inside the air outlet 10, the blown air is sandwiched between the upper and lower blades 12 and the left and right side walls 34, the air direction is changed without leaking up and down, left and right, and the air is blown out from the air outlet 10. On the other hand, on the outside of the air outlet 10, even if the blown air changed to the left and right is blown further to the left and right than the left and right ends of the air outlet 10, it extends outward from the left and right side walls 34 of the air outlet 10. The upper and lower blades 12 can maintain the vertical and horizontal changing directions without spreading.

Here, as shown in FIG. 3, when the operation of the indoor unit is stopped, the lower blade 12a and the upper blade in a state where the air outlet 10 is covered with the lower blade 12a and the main body 2 above the air outlet 10 is covered with the upper blade 12b. The front surface of 12b is defined as a “design surface”.

The left and right blades 14 shown in FIG. 9 have their tips protruding forward from the design surface when facing the front. Therefore, when the upper and lower blades 12 are closed with the left and right blades 14 facing forward when the operation of the air conditioner is stopped, the upper and lower blades 12 interfere with the left and right blades 14. For this reason, when the operation of the air conditioner is stopped, the left and right blades 14 are inclined inward, and then the outlet 10 is controlled to be closed by the upper and lower blades 12. By such control, interference between the upper and lower blades 12 and the left and right blades 14 is avoided. Further, by increasing the size of the left and right blades 14, it is possible to improve performance such as wind direction control for blowing in the left and right direction.

As shown in FIG. 9, the left and right side walls 34 of the air outlet 10 have a cross-sectional shape including an R shape (Round shape) that extends outward toward the air outlet 10 in the ventilation path 28. By making the side wall 34 into such an R shape, the Coanda effect (Coanda effect) that the wind flows along the side wall 34 occurs. Therefore, by disposing the electrical unit 1 in the upper front portion of the main body 2 to widen the blowout port 10 and forming the left and right side walls 34 in such a shape, the air blowing performance in the left-right direction is further improved.

It should be noted that, by appropriately combining arbitrary embodiments of the above-described various embodiments, the effects possessed by them can be produced.

The air conditioner according to the present invention improves the wind direction changing performance by disposing the electrical unit in the corner portion at the upper front portion in the main body, thereby improving the wind direction changing performance. Prevent condensation and improve the reliability of indoor units. Therefore, it is useful as various air conditioners including air conditioners used in general households.

Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as being included therein, so long as they do not depart from the scope of the present invention according to the appended claims.

Claims

A front surface portion and a top surface portion forming an outline of the main body of the indoor unit;
A fan disposed in the body;
A heat exchanger disposed upstream of the fan;
A filter disposed upstream of the heat exchanger;
An air outlet that blows out air;
An electrical unit,
An air conditioner comprising the front portion, the top portion, and a corner section defined by the filter,
An air conditioner in which the electrical unit is disposed at the corner.
The top surface portion is formed with a suction port for sucking air outside the main body,
The air conditioner according to claim 1, wherein the fan guides the air sucked from the suction port to the heat exchanger through the corner portion.
The air conditioner according to claim 1, wherein the wind speed at the corner portion is the smallest in the wind speed distribution by the fan in the main body.
The air conditioner according to claim 1, wherein the corner portion is located at a position farthest from the fan in the main body.
The electrical unit includes an electrical board holding member that holds an electrical board on which various electrical components are mounted,
The air conditioner according to any one of claims 1 to 4, wherein the electrical board holding member is disposed so as to face the filter.
The electrical unit is configured to be horizontally long at the corner, and is arranged such that a distance between the electrical unit and the heat exchanger is 20% or more of a vertical width of the electrical unit. The air conditioner according to any one of 5.
The air conditioner according to any one of claims 1 to 6, wherein the electrical unit is arranged 50 mm or more away from the lower end of the suction opening of the filter.
The air conditioner according to any one of claims 1 to 7, wherein the electrical unit is disposed so as to extend substantially parallel to the heat exchanger or the filter.
The air conditioner according to any one of claims 1 to 8, wherein the electrical unit is disposed above a rotation shaft of the fan.
The air conditioner according to claim 9, wherein the electrical unit is disposed above an upper end of the fan.
The air according to claim 1, wherein the electrical unit is fixed to a filter frame for attaching the filter to the main body, a side surface of the main body, or a base frame that is a base of the main body. Harmony machine.
A front panel capable of opening and closing a front opening formed in the main body;
A drive arm for opening and closing the front panel,
The air conditioner according to any one of claims 1 to 11, wherein a drive center position of the drive arm is disposed on an upper front side of the electrical unit.