JP6540854B2 - Indoor unit of air conditioner - Google Patents

Description

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

  BACKGROUND Conventionally, as an indoor unit of an air conditioner, there is one in which a rectangular decorative panel of a casing has four outlets (see, for example, Japanese Patent No. 378 3381 (Patent Document 1)). Each of the outlets extends along each side of the decorative panel and is opened and closed by flaps rotatably attached to the decorative panel. In addition, a drive unit is attached to each corner of the decorative panel, and the flap rotates in response to the driving force of the drive unit. That is, the drive part is arrange | positioned at the both sides of the rotational axis direction of the said flap.

Patent No. 378 3381

  In the indoor unit of the conventional air conditioner described above, since the drive portions are located on both sides of the flap in the rotational axis direction, there is a problem that the length of the casing in the rotational axis direction of the flap becomes long.

  In addition, when the length of the casing is simply shortened, the length of the air outlet in the direction of the pivot axis of the flap is also shortened, and the performance deterioration in which the air volume of the air outlet is reduced will be made in the future.

  Then, the subject of this invention is providing the indoor unit of the air conditioner which can be reduced in size and whose performance can be improved.

An indoor unit of an air conditioner according to one aspect of the present invention is
A casing provided with an outlet and having a casing body;
A centrifugal fan disposed in the casing;
A heat exchanger disposed between the casing and the centrifugal fan;
A rotatable flap for controlling the wind direction of the air blown out from the air outlet;
A driving unit disposed in the casing and generating a driving force for rotating the flap;
The drive unit is adjacent to the flap in a direction orthogonal to the rotational axis direction of the flap;
The above flap is
A flap body extending in the rotational axis direction;
A first auxiliary flap extending from one end of the flap body toward the opposite side to the air outlet side of the casing;
And a second auxiliary flap extending from the other end of the flap body toward the opposite side to the air outlet side of the casing,
Within the range of rotation of the flap, the center of gravity of the flap, with respect to rotation axis of the flap, located on the downstream side of the outlet air is the air outlet side of the casing.

According to the above configuration, by arranging the drive portion in the casing so as to be adjacent to the flap in the direction orthogonal to the rotation axis direction of the flap, the drive portion is the outlet in the rotation axis direction of the flap You can prevent them from being next to each other. As a result, even if the length of the casing is shortened in the rotational axis direction of the flap, the length of the air outlet can be increased to increase the air volume of the air outlet. Therefore, the indoor unit of the air conditioner can be miniaturized and the performance can be improved.
Further, the flap can be smoothly rotated by positioning the center of gravity of the flap on the side of the air outlet of the casing with respect to the rotation axis within the rotation range of the flap.

In the air conditioner indoor unit of one embodiment,
The length of the flap in the rotational axis direction is 85% or more of the length of the casing main body in the rotational axis direction of the flap.

  According to the above embodiment, by setting the length of the flap in the pivoting axis direction to 85% or more of the length of the casing main body in the pivoting axis direction of the flap, the wind direction control can be easily performed, and the air flow performance can be improved. It can be improved.

In the air conditioner indoor unit of one embodiment,
The length of the air outlet in the rotational axis direction of the flap (20) is 85% or more of the length of the casing main body in the rotational axis direction of the flap (20).

  According to the above-described embodiment, by setting the length of the outlet in the rotational axis direction of the flap to 85% or more of the length of the casing main body in the rotational axis direction of the flap, the air volume of the outlet can be ensured. It can be increased.

The indoor unit of the air conditioner according to one embodiment is
A link mechanism is provided to transmit the driving force of the drive unit to the flap to rotate the flap.

According to the above embodiment, since the driving force of the drive unit is transmitted to the flap via the link mechanism, the degree of freedom of the installation location of the drive unit can be increased.
The indoor unit of the air conditioner according to one embodiment is
The second auxiliary flap of the flap body and the drive portion are adjacent to each other in the direction orthogonal to the rotational axis direction of the flap.

  As apparent from the above, the present invention can provide an indoor unit of an air conditioner which can be miniaturized and whose performance can be improved.

It is a perspective view of the indoor unit of the air conditioner of one embodiment of this invention. It is another perspective view of the said indoor unit. It is a bottom view of the above-mentioned indoor unit. It is sectional drawing of the IV-IV line | wire arrow of FIG. It is a bottom view which shows the state which removed the panel, the drain pan, etc. from the said indoor unit. It is a bottom view which shows the state which attached the flap to the indoor unit of FIG. It is a bottom view which shows the state which removed the flap from the said indoor unit. It is a side view of a flap, a stepping motor, and a link mechanism. It is a top view of a part of the above-mentioned flap. It is a side view of the above-mentioned flap.

  Hereinafter, the indoor unit of the air conditioner of this invention is demonstrated in detail by embodiment of illustration.

  FIG. 1 shows a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention, as viewed obliquely from below. Moreover, FIG. 2 has shown the perspective view which looked at the said indoor unit from diagonally upward.

  The indoor unit of this embodiment is a ceiling-embedded indoor unit, and as shown in FIGS. 1 and 2, a casing main body 1 and a rectangular panel 2 attached to the lower side of the casing main body 1 , And a grill 3 detachably attached to the panel 2. The casing body 1, the panel 2 and the grille 3 constitute an example of a casing.

  Pipe connection parts 5 and 6 and a drain socket 7 protrude from the side wall of the casing main body 1. A refrigerant pipe (not shown) is connected to the pipe connection parts 5 and 6 from the outside of the casing main body 1. Further, a drain hose (not shown) is connected to the drain socket 7 from the outside of the casing main body 1.

  Further, on the side wall of the casing main body 1, an electric component part 8 is provided adjacent to the pipe connection parts 5 and 6 and the drain socket 7.

  In the panel 2, the air outlet 10 is provided so as to be located on one side in the longitudinal direction of the grill 3 and along the short side of the outer edge of the panel 2. Moreover, the flap 20 which opens and closes the blower outlet 10 is attached to the panel 2 so that rotation is possible. In addition, in FIG. 1, the state by which the blower outlet 10 was closed by the flap 20 is shown.

  Moreover, the indoor unit of this embodiment is provided with the suspension fittings 101, 102, 103, and 104 (the suspension fitting 104 is shown in FIG. 5). The suspension fittings 101, 102, 103, and 104 are fixed to suspension bolts (not shown) hanging from, for example, a casing on the ceiling. Thus, the indoor unit is suspended from the ceiling.

  FIG. 3 shows a bottom view of the indoor unit. In FIG. 3, the same components as those in FIGS. 1 and 2 are given the same reference numerals as those in FIGS. 1 and 2.

  The flap 20 has a U-shape in a plan view, and controls the wind direction of the air blown out from the outlet 10.

  More specifically, the flap 20 includes a flap main body 20a extending along the pivot shaft 21, a first auxiliary flap 20b connected to one end of the flap main body 20a, and a second auxiliary connected to the other end of the flap main body 20a. And a flap 20c.

  The first auxiliary flap 20 b extends from one end of the flap body 20 a toward the side opposite to the outlet 10 side of the panel 2. The first auxiliary flap 20 b is connected to the stepping motor 80 via a link mechanism 90. The stepping motor 80 is an example of a drive unit.

  The second auxiliary flap 20 c extends from the other end of the flap body 20 a toward the side opposite to the outlet 10 side of the panel 2. That is, the extension direction of the second auxiliary flap 20c is parallel to the extension direction of the first auxiliary flap 20b.

  Further, in a direction parallel to the pivot shaft 21 of the flap 20 (hereinafter referred to as "the pivot shaft direction of the flap 20"), the length L1 of the flap 20 is the length L2 of the casing main body 1 (shown in FIG. 5). It is set to over 85% of). For example, if the length L2 of the casing main body 1 is 315 mm, the length L1 of the flap 20 is set to 280 mm.

  Further, the center of gravity 22 of the flap 20 is set to the flap main body 20 a so as to have a space between itself and the pivot shaft 21. In other words, the flap 20 is formed such that the center of gravity 22 of the flap 20 is located closer to the outlet 10 of the casing main body 1 than the pivot shaft 21.

  The stepping motor 80 is disposed in a space surrounded by the casing body 1, the panel 2 and the grill 3, and is adjacent to the flap 20 in the direction orthogonal to the rotational axis direction of the flap 20. Further, the stepping motor 80 is located on the side opposite to the outlet 10 side of the casing main body 1 with respect to the rotating shaft 21. Further, the stepping motor 80 generates a driving force for rotating the flap 20. At this time, the flap 20 receives the driving force of the stepping motor 80 via the link mechanism 90 and pivots about the pivot shaft 21. That is, the driving force of the stepping motor 80 is transmitted to the flap 20 via the link mechanism 90, and the flap 20 is rotated. The stepping motor 80 may be positioned on the outlet 10 side of the casing main body 1 with respect to the pivot shaft 21.

  Moreover, as shown in FIG. 3, the suction port 1a is provided in the center part of the casing main body 1 (it shows in FIG. 1, FIG. 2). A filter 4 (shown in FIG. 4) is disposed between the suction port 1 a and the grill 3.

  In addition, the blower outlet 10 side of the casing main body 1 means the 1st wall part 11 (it shows in FIG. 5) side of the casing main body 1. FIG.

  FIG. 4 shows a cross-sectional view taken along line IV-IV of FIG. In FIG. 4, the same components as those in FIGS. 1 to 3 are given the same reference numerals as those in FIGS. 1 to 3.

  A turbo fan 30 is disposed in the casing body 1. The turbo fan 30 is driven by the motor 31 to rotate in a predetermined rotation direction. Here, when the turbo fan 30 is viewed from below, the predetermined rotation direction coincides with the counterclockwise direction. The turbo fan 30 is an example of a centrifugal fan.

  A bell mouth 32 is disposed between the suction port 1 a of the casing main body 1 and the turbo fan 30. The turbo fan 30 sucks indoor air through the space in the bell mouth 32.

  Further, in the casing main body 1, a heat exchanger 40 and a partition plate 50 are disposed around the turbo fan 30. The blowoff air of the turbofan 30 flows toward the blowout port 10 after passing through the heat exchanger 40. At this time, the partition plate 50 guides the blown air of the turbo fan 30 to the heat exchanger 40. In addition, the partition plate 50 is an example of a partition part. In addition, the partition portion may be a part of the casing main body 1.

  Furthermore, in the casing main body 1, a drain pan 60 is disposed from the lower side of the heat exchanger 40 to the lower side of the partition plate 50. Thereby, it is possible for the drain pan 60 to receive the dew condensation water generated by the heat exchanger 40 and the partition plate 50.

  Further, in the casing main body 1, a ventilation path P for guiding the air blown out from the turbo fan 30 to the air outlet 10 of the panel 2 is formed.

  FIG. 5 shows a bottom view of the indoor unit with the panel 2 and the drain pan 60 removed.

  The casing main body 1 is provided between the first wall 11 facing the outlet 10, the second wall 12 facing the first wall 11, and the first wall 11 and the second wall 12. And third and fourth wall portions 13 and 14 facing each other. The ends on the air outlet 10 side of the third and fourth wall portions 13 and 14 are continuous with the first wall portion 11. On the other hand, the end of the third and fourth wall portions 13 and 14 opposite to the blowout port 10 is continuous with the second wall portion 12.

  Further, the shape of the second wall portion 12 is determined such that the portion 12b on the fourth wall portion 14 side is positioned closer to the first wall portion 11 than the portion 12a on the third wall portion 13 side. ing. That is, in the second wall portion 12, the portion 12 b provided with the pipe connection portions 5 and 6 is recessed toward the first wall portion 11. The middle portion 12c between the portion 12a and the portion 12b is inclined with respect to the direction in which the portions 12a and 12b extend. In addition, the part 12a by the side of the 3rd wall 13 of the 2nd wall 12 is an example of the part by the side of the 1st extension in the 2nd wall of a casing. Moreover, the part 12b by the side of the 4th wall 14 of the 2nd wall 12 is an example of the part by the side of the 2nd extension in the 2nd wall of a casing.

  The heat exchanger 40 is disposed between the first wall portion 11, the third wall portion 13 and the fourth wall portion 14 of the casing main body 1 and the turbo fan 30.

  More specifically, the heat exchanger 40 includes a first heat exchange unit 41, a second heat exchange unit 42, and a third heat exchange unit 43. The first heat exchange unit 41, the second heat exchange unit 42, and the third heat exchange unit 43 are integrally formed with each other. The second heat exchanger 42 is an example of a first extension. Moreover, the 3rd heat exchange part 43 is an example of a 2nd extension part. The first heat exchange unit 41, the second heat exchange unit 42, and the third heat exchange unit 43 may be separately formed, for example, spaced apart from each other.

  The flap 20 is formed in the vicinity of the first wall portion 11 of the casing main body 1. The flap 20 is disposed below the space on the first wall 11 side in the casing main body 1.

  The first heat exchange portion 41 is formed along the first wall portion 11 and faces the first wall portion 11 of the casing main body 1.

  The second heat exchange portion 42 faces the third wall portion 13 of the casing main body 1 and extends from the first wall portion 11 side toward the second wall portion 12 side. The second heat exchange unit 42 is located upstream of the first heat exchange unit 41 in the rotational direction of the turbo fan 30. In addition, a drain pump 70 is disposed between the tip of the second heat exchange unit 42 and the portion of the second wall 12 on the third wall 13 side.

  The drain pump 70 sucks the condensed water and the like accumulated in the drain pan 60, and discharges the sucked condensed water and the like to the drain socket 7 side. That is, the drain pump 70 is a pump for discharging condensed water and the like in the casing main body 1 to the outside of the casing main body 1.

  The third heat exchange portion 43 faces the fourth wall portion 14 of the casing main body 1 and extends from the first wall portion 11 side toward the second wall portion 12 side. The third heat exchange unit 43 is located downstream of the first heat exchange unit 41 in the rotational direction of the turbo fan 30. The end of the second heat exchange portion 42 is positioned closer to the second wall 12 than the end of the third heat exchange portion 43. In other words, the tip of the second heat exchange portion 42 is disposed relatively far from the air outlet 10, while the tip of the third heat exchange portion 43 relatively near the air outlet 10 Is placed.

  Further, the tip of the third heat exchange unit 43 and the pipe connection unit 5 are connected to each other via the refrigerant pipe 85. In addition, the tip of the third heat exchange unit 43 and the pipe connection unit 6 are connected to each other through the refrigerant pipe 86.

  The pipe connection parts 5 and 6 connect the refrigerant pipes 85 and 86 in the casing main body 1 and the refrigerant pipes outside the casing main body 1. The pipe connection parts 5 and 6 make it possible to flow the refrigerant into the heat exchanger 40.

  Further, the distance between the second heat exchange portion 42 and the third heat exchange portion 43 becomes longer as the distance from the blowout port 10 increases. That is, the heat exchanger 40 is formed to have a U-shape in plan view. The distance between the second heat exchange unit 42 and the third heat exchange unit 43 may be constant or substantially constant. In addition, the heat exchanger 40 may be formed to have, for example, a V-shape, an arc shape, or the like in a plan view.

  The partition plate 50 surrounds the turbofan 30 together with the heat exchanger 40. The partition plate 50 connects the tip of the second heat exchange portion 42 of the heat exchanger 40 and the tip of the third heat exchange portion 43 of the heat exchanger 40.

  FIG. 6 shows the indoor unit shown in FIG. 5 with the flap 20 (shown by hatching) attached, and FIG. 7 shows the indoor unit with the flap 20 removed. 6 and 7, the same components as those in FIGS. 1 to 5 are given the same reference numerals as those in FIGS. 1 to 5.

  In a plan view, the flap main body 20a and the first and second auxiliary flaps 20b and 20c are disposed so as not to overlap the heat exchanger 40, as shown in FIG. Further, the flap main body 20 a and the first and second auxiliary flaps 20 b and 20 c are located between the first wall 11 of the casing main body 1 and the second wall 12 of the casing main body 1 in plan view. The flap main body 20 a is provided along the first wall portion 11 of the casing main body 1. The first auxiliary flap 20 b extends along the third wall 13 of the casing body 1. On the other hand, the second auxiliary flap 20 c extends along the fourth wall 14 of the casing body 1. Further, in plan view, the tip end portions of the first and second auxiliary flaps 20b and 20c are located on the second wall 12 side of the casing main body 1 with respect to the flap main body 20a.

  As shown in FIG. 6 and FIG. 7, the outlet 10 is provided with a rectangular first outlet 10 a provided along the first wall 11 of the casing main body 1, and second and third outlets. It consists of 10b and 10c. The second blowout portion 10b extends from one end of the first blowout portion 10a toward the third wall 13 of the casing main body 1, and then is bent to form the second wall of the casing main body 1 Extend towards 12 On the other hand, the third outlet portion 10c extends from the other end of the first outlet portion 10a toward the fourth wall portion 14 side of the casing main body 1, and then is bent to form the second main portion of the casing main body 1 It extends towards the wall 12.

  Further, in the rotational axis direction of the flap 20, the length L3 of the outlet 10 is set to 85% or more of the length L2 of the casing main body 1. For example, when the length L2 of the casing main body 1 is 315 mm, the length L3 of the blower outlet 10 is set to 283 mm.

  FIG. 8 is a side view of the flap 20, the stepping motor 80 and the link mechanism 90. As shown in FIG.

  The link mechanism 90 includes a first link 90a, a second link 90b whose one end is connected to one end of the first link 90a, and a third link 90c whose one end is connected to the other end of the first link 90a. And. The other end of the second link 90 b is connected to the rotation shaft of the stepping motor 80. The other end of the third link 90c is connected to the first auxiliary flap 20b.

  When the flap 20 receives the driving force of the stepping motor 80 via the link mechanism 90, it rotates in the directions of arrows R1 and R2.

  FIG. 9 is a top view of a portion of the flap 20. 10 is a side view of the flap 20. As shown in FIG.

  As shown in FIGS. 9 and 10, when the flap 20 closes the outlet 10, the first and second auxiliary flaps 20b and 20c are respectively the flap body 20a side with respect to the end on the flap body 20a side. The opposite end slopes down.

  In addition, when the turbo fan 30 is driven and the blowout air is blown out from the blowout port 10, the flap 20 is pivoted between the upper limit position 23 shown by a two-dot chain line and the lower limit position 24 shown by a two dot chain line. Do. At this time, the center of gravity of the flap 20 moves so as to draw a circular arc centering on the rotation axis 21 and is positioned on the right side in FIG. 10 than the vertical plane including the rotation axis 21. That is, the center of gravity 22 of the flap 20 is located on the outlet 10 side of the panel 2 with respect to the pivot shaft 21 within the pivoting range of the flap 20. The position of the flap 20 is the upper limit position 23 when it is desired to send the air blown out from the outlet 10 far. On the other hand, when it is desired to send the air blown out from the outlet 10 close, the position of the flap 20 is the lower limit position 24.

  Further, when the flap 20 pivots between the upper limit position 23 and the lower limit position 24, the first and second auxiliary flaps 20 b enter the inside of the air outlet 10.

  According to the indoor unit configured as described above, the stepping motor 80 is adjacent to the flap 20 in the direction orthogonal to the rotational axis direction of the flap 20. It can prevent them from being next to each other. As a result, even if the length L2 of the casing main body 1 is shortened, the length L3 of the air outlet 10 can be increased, and the air volume of the air outlet 10 can be increased. Therefore, the indoor unit can be miniaturized and the performance can be improved.

  Further, since the length L1 of the flap 20 is set to 85% or more of the length L2 of the casing main body 1, the wind direction control can be easily performed, and the air blowing performance can be improved.

  Moreover, since the length L3 of the blower outlet 10 is set to 85% or more of the length L2 of the casing main body 1, the air volume of the blower outlet 10 can be reliably increased.

  In addition, by positioning the center of gravity 22 of the flap 20 on the side of the outlet 10 of the panel 2 with respect to the pivot shaft 21 within the pivot range of the flap 20, the flap 20 can be pivoted smoothly.

  On the other hand, provisionally, the center of gravity 22 of the flap 20 is positioned on the side of the outlet 10 of the panel 2 with respect to the pivot shaft 21 in a part of the pivot range of the flap 20. If the center of gravity 22 of the flap 20 is positioned on the opposite side to the outlet 10 side of the panel 2 with respect to the pivot shaft 21 in the other part in the movement range, the pivot of the flap 20 becomes smooth It does not.

  In addition, when the flap 20 pivots between the upper limit position 23 and the lower limit position 24, the first and second auxiliary flaps 20b enter the inner side with respect to the outlet 10, so the outlet 10 is a wind from the air passage P. Can be controlled with good controllability.

  Further, since the driving force of the stepping motor 80 is transmitted to the flap 20 through the link mechanism 90, the degree of freedom of the installation location of the stepping motor 80 can be increased.

  Although the above-mentioned embodiment explained an indoor unit provided with a rectangular parallelepiped-shaped casing constituted by casing main part 1, panel 2, and grill 3, a shape of a casing is not restricted to this.

  Further, although the indoor unit of the ceiling-embedded type has been described in the above embodiment, the indoor unit is not limited to this, and the present invention may be applied to a ceiling type indoor unit.

  Moreover, in the said embodiment, although the indoor unit had the blower outlet 10 so that the air which passed through the heat exchanger 40 blows off in one direction, the air which passed through the heat exchanger 40 has two directions or three You may have a blower outlet so that it may blow off in a direction.

  In the above embodiment, a link mechanism is used as an example of a transmission mechanism for transmitting the driving force of the drive unit to the flap. For example, a mechanism consisting of a rack gear and a pinion gear, a mechanism consisting of a belt and pulleys, and a mechanism consisting of a gear train Or the like may be used.

  Although the specific embodiment of this invention was described, this invention is not limited to the said embodiment, It can change variously within the scope of this invention, and can be implemented. For example, a combination of the contents described in the above embodiments may be used as one embodiment of the present invention.

DESCRIPTION OF SYMBOLS 1 Casing main body 1a Suction inlet 2 Panel 3 Grill 4 Filter 5, 6 Piping connection part 7 Drain socket 8 Electrical component part 10 Air outlet 11 1st wall part 12 2nd wall part 13 3rd wall part 14 4th wall part 20 Flap Reference Signs List 20a flap main body 20b first auxiliary flap 20c second auxiliary flap 21 pivot shaft 22 center of gravity 30 turbo fan 31 motor 32 bell mouth 40 heat exchanger 41 first heat exchange portion 42 second heat exchange portion 43 third heat exchange portion 50 Partition plate 60 drain pan 70 drain pump 80 stepping motor 90 link mechanism

Claims (5)

A casing (1, 2, 3) provided with an outlet (10) and having a casing body (1);
A centrifugal fan (30) disposed in the casing (1, 2, 3);
A heat exchanger (40) disposed between the casing (1, 2, 3) and the centrifugal fan (30);
A rotatable flap (20) for controlling the wind direction of the air blown out from the air outlet (10);
A driving unit (80) disposed in the casing (1, 2, 3) and generating a driving force for rotating the flap (20);
The drive unit (80) is adjacent to the flap (20) in a direction orthogonal to the rotational axis direction of the flap (20),
The flap (20) is
A flap body (20a) extending in the rotational axis direction;
A first auxiliary flap (20b) extending from one end of the flap body (20a) to the opposite side of the casing (1, 2, 3) to the outlet (10) side;
A second auxiliary flap (20c) extending from the other end of the flap body (20a) to the opposite side of the casing (1, 2, 3) to the air outlet (10) side,
Within the range of rotation of the flap (20), the center of gravity of the flap (20) (22), to the rotation shaft (21) of the flap (20), the casing of the (1,2,3) An indoor unit of an air conditioner characterized in that it is located on the downstream side of the blowout air which is on the side of the air outlet (10). In the indoor unit of the air conditioner according to claim 1,
The air characterized in that the length of the flap (20) in the rotational axis direction is 85% or more of the length (L2) of the casing main body (1) in the rotational axis direction of the flap (20). The indoor unit of the conditioner. In the indoor unit of the air conditioner according to claim 1 or 2,
The length (L3) of the outlet (10) in the rotational axis direction of the flap (20) is 85 of the length (L2) of the casing main body (1) in the rotational axis direction of the flap (20) An indoor unit of an air conditioner characterized by having a% or more. The indoor unit of an air conditioner according to any one of claims 1 to 3.
An indoor unit of an air conditioner, comprising a link mechanism (90) for transmitting the driving force of the drive unit (80) to the flap (20) and rotating the flap (20). The indoor unit of the air conditioner according to any one of claims 1 to 4.
An air conditioner characterized in that the second auxiliary flap (20c) of the flap body (20a) and the drive portion (80) are adjacent to each other in a direction orthogonal to the rotational axis direction of the flap (20). Indoor unit of the aircraft.

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