JP2012042181A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner capable of improving heat exchanging efficiency by increasing a suction air volume to a heat exchanger, of indoor air without increasing a feeling of pressure to a dweller, and shielding a front side of a supply opening.SOLUTION: A suction opening and the supply opening 11 are formed on an indoor unit body 1, and the indoor heat exchanger 13 and an indoor blower 14 are disposed therein. The supply opening is formed at a front lower section of the indoor unit body, and the suction opening is constituted of a top suction opening 5 formed on a top section of the indoor unit body, and a front lower suction opening 10 disposed along an upper edge of the supply opening and opposed to a lower end section of the heat exchanger. An opening/closing panel 7 is disposed on a front section of the front lower suction opening. The opening/closing panel is connected to a driving mechanism K to be rotated and driven, shields the front section of the front lower suction opening, and shields a front section of the supply opening during stopping an air conditioning operation.

Description

  Embodiments described herein relate generally to an air conditioner indoor unit.

  As a so-called wall-mounted indoor unit, a suction port is provided on the top surface of the indoor unit main body, and a blow-off port is provided at the lower part of the front surface. Inside the main unit, the heat exchanger is opposed to the suction port, and between this heat exchanger and the blow-out port. In general, a configuration in which a blower is disposed in the fan is arranged. During the air-conditioning operation, the blower is driven and the indoor air is guided from the suction port to the heat exchanger, where heat is exchanged and then blown out from the outlet.

  By the way, the heat exchanger is formed in a substantially inverted V shape in a side view, and most of the heat exchanger is opposed to the suction port on the upper surface of the main body, but a part thereof is extended to face the front surface of the main body. On the other hand, since the suction port is provided on the upper surface of the main body, the indoor air sucked from the suction port circulates in the part facing the front surface of the main body of the heat exchanger (front heat exchanger part), particularly at the lower end part. hard.

In view of this, there is an idea that the front wall of the main body bulges to the front side so that more room air is guided to the lower end of the front heat exchanger section, thereby allowing more space between the main body and the front heat exchanger section. In this case, the main body is enlarged, and the feeling of pressure on the resident is increased.
On the other hand, recently, an opening is provided in the front of the main unit, and a movable panel is attached here.When the operation is stopped, the front of the main unit is shielded by the movable panel. An invention is disclosed in which suction is concentrated in the lower part of the exchanger part.

JP 2007-192480 A

  Specifically, two louvers are provided at the outlet, and the outlet is opened and closed, and the air direction of the heat exchange air blown from the outlet is set in an open state. The movable panel is provided with a pivot point at the upper end of the outlet, and the upper end, which is a free end, is set so as to be opposed to a substantially intermediate portion in the height direction of the front heat exchanger portion or a height portion higher than that.

  Therefore, the movable panel only opens and closes the front surface of the main body, and does not open and close the outlet. In the state of being pivotally displaced in the horizontal direction during the air conditioning operation, the length of protrusion of the movable panel from the main body becomes extremely large, and the front heat exchanger section is exposed to the room approximately half or more.

  The present embodiment is based on the above circumstances, and without increasing the feeling of pressure on the occupant, the amount of air sucked into the heat exchanger for indoor air is increased to improve the heat exchange efficiency, and the blowout unit The indoor unit of the air conditioner which can shield the front part of the is provided.

The indoor unit of the air conditioner in this embodiment is
The indoor unit main body is opened with a suction part through which air taken in from the room flows and a blowing part through which air blown into the room flows.
Furthermore, a heat exchanger that exchanges heat with room air and a blower that draws room air from the suction unit and distributes the air to the heat exchanger and blows the heat-exchanged air from the blowing unit are accommodated in the indoor unit main body.
The blow-out unit is provided in the lower front portion of the indoor unit main body, and the suction unit is provided along the upper surface suction unit provided on the upper surface of the indoor unit main body, and the lower end of the heat exchanger provided along the upper edge of the blow-out unit. And a front lower suction portion.
The open / close panel is provided in the lower front suction portion, and is connected to the open / close mechanism and is driven to rotate. Further, the open / close panel shields the front lower suction part and the front part of the blowout part when the air-conditioning operation is stopped.

The external appearance perspective view of the indoor unit of the air conditioner based on 1st Embodiment. The longitudinal cross-sectional view of the indoor unit based on the embodiment. The perspective view of the indoor unit of the state which removed the front panel based on the embodiment. The figure explaining the opening-and-closing mechanism of the opening-and-closing panel based on the embodiment. The longitudinal cross-sectional view of the principal part at the time of the air-conditioning operation stop based on the embodiment. The longitudinal cross-sectional view of the principal part at the time of the air-conditioning driving | operation based on the embodiment. The schematic diagram explaining the suction area | region and blowing area | region at the time of an air-conditioning driving | operation based on the embodiment.

Hereinafter, the present embodiment will be described with reference to the drawings.
FIG. 1 is an external perspective view of an indoor unit of an air conditioner, and particularly shows a state during an air conditioning operation.
The indoor unit main body 1 includes a rear panel casing 2 and a front panel 3 that is a front casing, and has a horizontally long box shape that is long in the horizontal width direction with respect to the vertical direction. This is a so-called wall-hanging type in which the rear surface portion of the rear plate housing 2 is attached to a mounting plate at a height of the indoor wall surface.

  The rear plate housing 2 constitutes a back surface portion and a part of the bottom surface of the indoor unit main body 1. The front panel 3 is a so-called decorative panel, and includes a front surface portion 3a, left and right side portions 3b, and an upper surface portion 3c, and has a box shape with an open back surface and bottom surface. An opening of the front panel 3 is fitted into the rear panel housing 2 to constitute the indoor unit body 1.

  Most of the upper surface portion 3 c of the front panel 3 is opened and serves as an upper surface suction port (upper surface suction portion) 5. A frame-like crosspiece 6 is fitted into the upper surface inlet 5 and is partitioned into a plurality of spaces by the crosspiece 6 and is always open to the interior of the indoor unit body 1.

  An opening / closing panel 7 to be described later is provided along the lower end of the front surface of the front panel 3, and a blowout louver (wind direction guiding body) 8 is provided in parallel with the opening / closing panel 7. By the opening / closing panel 7 and the blowout louver 8, a space portion surrounded by the lower end of the front surface portion 3 a of the front panel 3, the front ends of the left and right side portions 3 b and the bottom front end of the rear plate housing 2 can be freely opened and closed.

FIG. 2 is a longitudinal sectional view of the indoor unit of the air conditioner, and particularly shows a state when the air conditioning operation is stopped.
A front lower suction port (front suction unit) 10 and a blower port 11 are formed in parallel in the space where the open / close panel 7 and the blowout louver 8 are attached. The front lower suction port 10 opens along the lower end of the front surface portion 3 a of the front panel 3, and the blowout port 11 opens between the front lower suction port 10 and the front end of the bottom surface of the rear panel housing 2.

  That is, in the indoor unit main body 1, the air outlet 11 is provided in the lower front portion of the indoor unit main body 1, and the air inlet is the upper surface air inlet 5 provided in the upper surface portion 3 c of the front panel 3 and the upper end of the air outlet 11. The front lower suction port 10 is provided in parallel along the edge.

  The width in the front-rear direction orthogonal to the left-right width direction of the opening / closing panel 7 is provided across the same direction of the front lower suction port 10 and the upper end portion of the outlet 11 and is connected to an opening / closing mechanism K described later. . The blowing louver 8 is connected to a drive mechanism (not shown) so as to open and close the blowing port 11 and to change the blowing direction of the heat exchange air blown from the blowing port 11.

  The open / close panel 7 has a curved cross-sectional shape that is an extension of the curved cross-sectional shape of the front panel front surface portion 3a. Similarly, the blowout louver 8 also has a curved cross-sectional shape that is an extension of the curved cross-sectional shape of the open / close panel 7. When the air conditioning operation is stopped, the front panel front surface portion 3a, the open / close panel 7 and the blowout louver 8 form a continuous curved surface and are excellent in appearance.

  The blowout louver 8 is formed by mounting a plurality of vertical louvers 8b at a predetermined interval on a single horizontal louver 8a. The horizontal louver 8a opens and closes the outlet 11 according to the rotation posture, and further sets the direction of blowing heat exchange air according to the operating conditions. A plurality of the vertical louvers 8b form one set, and each pair is rotationally driven at the same time to change the wind direction in the left-right direction.

In the indoor unit main body 1, a front heat exchanger portion 13 </ b> A that is curved in a substantially U shape in a side view and a diagonally straight rear heat exchanger portion 13 </ b> B are combined into a substantially inverted V shape. The indoor heat exchanger 13 to be formed is arranged.
Almost most of the front heat exchanger portion 13A except the upper end portion faces the front panel front surface portion 3a with a gap. In particular, the lower end portion of the front heat exchanger portion 13A faces the front lower suction port 10 that is opened and closed by the opening and closing panel 7 with a gap. Almost most of the front side heat exchanger part 13 </ b> A except the lower end part and the rear side heat exchanger part 13 </ b> B are opposed to the upper surface inlet 5.

  An indoor fan 14 is disposed between the front and rear heat exchanger portions 13A and 13B of the indoor heat exchanger 13. The indoor blower 14 includes a fan motor supported by a support and a cross-flow fan fitted on the rotation shaft of the fan motor. The axial length of the fan motor matches the length of the indoor heat exchanger 13 in the width direction and is correctly opposed.

  The lower end portion of the front heat exchanger portion 13A is placed on the front drain pan 15a, and the lower end portion of the rear heat exchanger portion 13B is placed on the rear drain pan 15b. The front and rear drain pans 15a and 15b are integrally formed with the rear plate housing 2, receive drain water dripping from the respective heat exchanger sections 13A and 13B, and can drain the water through the drain hose. .

  The outer surfaces of the side walls of the front and rear drain pans 15a and 15b are provided close to the indoor blower 14, and these constitute a nose for the crossflow fan of the indoor blower 14. A partition wall member 16 connects the side wall portions of the front and rear drain pans 15 a and 15 b that are noses and the side portions of the outlet 11.

  A space surrounded by the partition wall member 16 becomes a blowout air passage 17 that communicates the nose and the blowout port 11 from the indoor blower 14 by driving the indoor blower 14. On the other hand, when the indoor blower 14 is driven, a suction ventilation path 18 extending from the upper surface suction port 5 and the front lower suction port 10 to the indoor blower 14 via the indoor heat exchanger 13 is formed.

  A filter support frame 20 is provided between the front surface portion 3 a and the upper surface portion 3 c of the front panel 3 and the indoor heat exchanger 13. The filter support frame 20 moves and supports an air filter (not shown) upward or downward. An air filter cleaning unit 21 is attached to face the air filter, and dust collected in the air filter can be removed and stored.

FIG. 3 is a perspective view in which the front panel 3 including the open / close panel 7 is removed from the rear panel housing 2 and shows a state during the air conditioning operation.
The length in the width direction of the indoor heat exchanger 13 and the length in the width direction of the filter support frame 20 are formed to be the same, and the filter support frame 20 is arranged correctly facing the front surface of the indoor heat exchanger 13. An electrical component box D is provided on one side (right side) of the indoor heat exchanger 13 and the filter support frame 20 and accommodates control electrical components.

  The lower end portion of the electrical component box D is a display unit 12 formed obliquely, receives a command signal from a remote controller (remote controller) and displays its contents, and a receiving unit that directly receives the command signal, A human sensor or the like for detecting the presence of residents and other heating elements is also provided. The display unit 12 is provided at a position aligned with the outlet 11 in a straight line.

  That is, as shown in FIG. 1, the blowout port 11 and the blowout louver 8 attached thereto can be seen side by side with the display panel 12 in a state where the front panel 3 is fitted in the rear panel housing 2. Further, the portion of the front panel 3 facing the electrical component box D is shielded, and the upper surface suction port 5 and the front lower suction port 10 are opened at the portion not facing the electrical component box D.

  However, the open / close panel 7 is formed to have the same left-right width dimension as the left-right width dimension of the front face part 3 a in order to maintain an appearance integrated with the front face part 3 a of the front panel 3. Accordingly, one side portion (right side portion) of the open / close panel 7 is extended so as to cover the display portion 12 beyond one side portion of the front lower suction port 10. Even in this state, the receiving unit and the human sensor described above are exposed.

  The filter support frame 20 is provided with an air filter driving mechanism at the lower end, and has a vertical beam 20a provided at a predetermined interval in the left-right width direction, and a predetermined interval in the vertical direction intersecting with the vertical beam 20a. The horizontal rail 20b provided in this manner is overlapped in the front-rear direction to form a moving path for moving and supporting the air filter across the front side and the rear side.

  The air filter cleaning unit 21 includes a brush body that is in sliding contact with a moving air filter, and a dust box that accommodates dust removed from the air filter by the brush body. The dust box is detachably attached from the indoor unit body 1.

  A front heat exchanger portion 13A that constitutes the indoor heat exchanger 13 can be seen through the filter support frame 20. The length in the left-right width direction of the indoor heat exchanger 13 and the length in the left-right width direction of the filter support frame 20 are set to be the same, and the filter support frame 20 is arranged to face the front surface of the indoor heat exchanger 13.

FIG. 4 is a diagram for explaining an opening / closing mechanism K that drives the opening / closing panel 7.
4A is a side view of the position and orientation of the opening and closing panel 7 when the air conditioning operation is stopped, FIG. 4B is a side view of the position and orientation of the opening and closing panel 7 during the air conditioning operation, and FIG. It is the perspective view which shows the position and orientation of the opening-and-closing panel 7 at the time of an air-conditioning driving | operation.

  A drive motor 25 constituting an opening / closing mechanism K is attached to one side portion of the front lower suction port 10. A drive gear is fitted on the rotation shaft of the drive motor 25, and a driven gear meshing with the drive gear is pivotally supported (none of these gears are shown).

  One end portion of the first link 26 is fitted on the rotation shaft of the driven gear, and the other end portion of the first link 26 is rotationally displaced as the driven gear rotates. Then, one end of the second link 27 is pivotally supported on the other end of the first link 26. The second link 27 has a total length that is approximately twice the total length of the first link 26.

  On the other hand, rotation shafts a project from left and right side portions of the open / close panel 7, and each rotation shaft a is pivotally supported by the front surface portion 3 a of the front panel 3. The other end portion b of the second link 27 is pivotally supported at one side portion of the opening / closing panel 7 on the side where the opening / closing mechanism K is attached, at a predetermined distance from the rotation axis a. Is done.

  The drive motor 25 and gears are accommodated in the motor case 28. The first link 26 is accommodated in the motor case 28 regardless of its rotational posture. At least a part of the second link 27 is accommodated in the motor case 28, and the remaining part is configured to protrude from the motor case 28.

In FIG. 4A, the first link 26 and the second link 27 intersect each other at an acute angle, and the second link 27 is in a substantially horizontal posture position. In this state, the other end b of the second link 27 attached to the open / close panel 7 is below the rotation axis a of the open / close panel 7, and the open / close panel 7 itself is an extension from the lower end of the front panel front face 3a. It is in.
At this time, the air conditioning operation is stopped, and as described above, the open / close panel 7 shields the front surface of the lower front suction port 10 and the front surface portion of the outlet 11.

In FIG. 4B, the drive motor 25 is driven to incline the first link 26 forward and displace the second link 27 in a bent shape, whereby the other end of the second link 27 is moved forward. Protrusively. Since the other end b of the second link 27 is displaced in front of the rotation axis a of the open / close panel 7, the open / close panel 7 changes to a posture substantially orthogonal to the front panel front face 3a.
At this time, the air conditioning operation is performed, and the open / close panel 7 opens the front lower suction port 10 and the blowout port 11 as described above. FIG. 4C shows the state at that time in a perspective view.

  An air conditioner indoor unit configured as described above, when an operation start signal is input from the operation stop state shown in FIG. 2 and the air conditioning operation is started, as shown in FIG. The louver 8 is rotationally driven.

  Here, the compressor of the outdoor unit (not shown) is driven, and the cross-flow fan of the indoor blower 14 rotates to perform a blowing action. The refrigeration cycle operation is started as the compressor is driven, and the refrigerant is guided to the indoor heat exchanger 13. By driving the indoor blower 14, room air is sucked into the main body 1 from the upper surface suction port 5 and the front lower suction port 10 and led to the suction ventilation path 18.

  The room air sucked into the main body 1 from the upper surface suction port 5 and the front lower surface suction port 10 flows through the air filter, and dust contained in the room air is captured. The cleaned indoor air flows through the indoor heat exchanger 13 and exchanges heat with the refrigerant discharged from the compressor and guided through the refrigeration cycle circuit. When the cooling operation is selected, the air is cool, and when the heating operation is selected, the air is warm.

Any heat exchange air is guided along the blowout air passage 17 and is blown out from the blowout port 11 while being guided by the horizontal louver 8a and the vertical louver 8b constituting the blowout louver 8.
In particular, the cool air is blown out to the upper part of the room from the rotating posture of the horizontal louver 8a, and a comfortable cooling action is performed without cooling the feet of the resident. Warm air is blown out toward the floor, and a comfortable heating action is performed to warm the occupants from their feet.

FIG. 5 is a diagram illustrating the position and orientation of the open / close panel 7 and the blowout louver 8 when the air-conditioning operation is stopped.
The open / close panel 7 extends to the position where the upper end edge is close to the lower end edge of the front panel front surface portion 3a by the open / close mechanism K as described with reference to FIG. Therefore, the front surface of the lower front suction port 10 formed between the lower end edge of the front panel front surface portion 3 a and the upper end edge of the outlet 11 is shielded by the open / close panel 7.

  The lower end edge d of the open / close panel 7 in this posture extends so as to face the upper end portion of the air outlet 11 and shields the front surface portion of the air outlet 11 formed along the lower portion of the lower front suction port 10. Further, the blowout louver 8 is positioned so as to cross the blowout opening 11 within a range not interfering with the open / close panel 7, and shields the lower surface side of the blowout opening 11 at the blowout closed position in the operation stop mode.

  Thus, by blocking the front of the blowout port 11 of the indoor unit by the open / close panel 7, the blowout port 11 of the indoor unit body 1 installed on the indoor wall surface is not exposed when the operation is stopped. 11 can prevent dust from adhering and improve the design.

FIG. 6 is a diagram illustrating the position and orientation of the open / close panel 7 and the blowout louver 8 during the air conditioning operation (cooling operation).
The open / close panel 7 is changed to a substantially horizontal posture by the operation of the open / close mechanism K as described above with reference to FIGS. 4B and 4C, and opens the front lower suction port 10 and the blowout port 11 to a fully opened state. Therefore, room air is sucked into the indoor unit body 1 from the front lower suction port 10 and flows through the lower end portion of the front heat exchanger portion 13A constituting the indoor heat exchanger 13 via the air filter.

  On the other hand, since the upper surface suction port 5 is always open all over, the indoor air is sucked into the indoor unit body 1 through the air filter from here, and the upper portion of the front heat exchanger 13A and the rear heat The entire exchanger unit 13B is distributed.

  Eventually, not only the upper surface suction port 5 but also the front lower suction port 10 is provided, so that the indoor air circulates in a substantially uniform state throughout the indoor heat exchanger 13 and exchanges heat. Compared with the indoor unit having a structure that is difficult to circulate in the lower end portion of the front heat exchanger portion 13A, the intake air volume increases, and the heat exchange efficiency of the indoor heat exchanger 13 can be improved.

  The blowing louver 8 is set to an effective angle according to the selection of the cooling operation and the heating operation, and a comfortable air conditioning effect is obtained. During normal operation, the open / close panel 7 is displaced and held in a substantially horizontal direction, so that the heat exchange air blown from the blowout port 11 is positioned on the upper surface of the blowout air passage 17 into the room, and the flow of the wind is directly It is in a position that does not hit.

  Conventionally, there is a structure in which two outlet louvers are provided in parallel at the outlet, and each is connected to a drive mechanism, and each of them is controlled separately. The cost increases and the control becomes complicated.

  Furthermore, conventionally, there is a structure in which one outlet louver is provided at the outlet, and this is connected to a drive mechanism and controlled, but this outlet louver has a length dimension in the front-rear direction orthogonal to the left-right width direction. Unless the length is substantially the same as the length in the front-rear direction of the outlet, the entire outlet cannot be shielded.

  When the blowout louver has a structure in which a plurality of vertical louvers are mounted on a single horizontal louver, the vertical louver forms a ventilation passage before the horizontal louver is rotated and displaced at a predetermined angle, for example, during heating operation. Will abut against the partition wall. That is, the wind direction guide angle of the blowing louver is restricted, and effective wind direction guidance cannot be performed.

  On the other hand, in this embodiment, the opening / closing panel 7 shields the front portion of the outlet 11 and the outlet louver 8 shields the lower surface portion. Since the opening / closing panel 7 is present, the length of the blowout louver 8 can be set to be short, and the gap formed in front of the blowing louver 8 is shielded by the opening / closing panel 7, so that the blowout from the front of the indoor unit body 1 is stopped. It is possible to prevent the mouth 11 from being seen.

  Although the blowout louver 8 has a configuration in which a plurality of vertical louvers 8b are mounted on one horizontal louver 8a, the partition wall member 16 constituting the blowout air passage 17 is formed even if the rotation angle is large. A sufficient gap can be secured without contact. That is, the wind direction guide angle of the blowout louver 8 is increased, and the improvement of the activation is obtained.

FIG. 7 is a schematic diagram for explaining the indoor air suction region IR and the heat exchange air blowing region OR during the air-conditioning operation.
The upper end of the suction region IR corresponds to the entire upper surface suction port 5, and the lower end of the suction region IR corresponds to the lower end of the front lower suction port 10. Since the pivotal support portion, which is the rotational axis a of the open / close panel 7, is provided at a position facing the front lower suction port 10, the position of the open / close panel 7 is set to a substantially horizontal state, so that Located in the suction region IR.

  Therefore, a part of the heat exchange air blown out from the blowout port 11 is blocked by the open / close panel 7 even if it is sucked into the upper suction region IR. Although the blowout port 11 and the front lower suction port 10 are in contact with each other, the open / close panel 7 prevents a so-called short circuit from the blowout port 11 to the front lower suction port 10 and contributes to an improvement in heat exchange efficiency.

  As mentioned above, although this embodiment was described, the above-mentioned embodiment is shown as an example and does not intend limiting the range of embodiment. The novel embodiment can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 11 ... Outlet (blow-out part), 1 ... Indoor unit main body, 13 ... Indoor heat exchanger, 14 ... Indoor fan, 5 ... Upper surface inlet (upper surface inlet), 10 ... Lower front inlet (lower front inlet) , K ... opening / closing mechanism, 7 ... opening / closing panel, 8 ... blowing louver (wind direction guide), 17 ... blowing air passage.

Claims (4)

An intake unit through which air taken in from the room flows, and an indoor unit main body in which a blowing unit through which air blown into the room flows is opened,
A heat exchanger housed in the indoor unit main body, for exchanging heat with room air, and a blower for sucking room air from the suction part and distributing it to the heat exchanger, and blowing out the heat-exchanged air from the blow-out part. Equipped,
The blowout part is provided at the lower front part of the indoor unit body,
The suction portion is composed of an upper surface suction portion provided on the upper surface portion of the indoor unit main body, and a lower front suction portion provided along the upper edge of the blowout portion and facing the lower end portion of the heat exchanger,
The front lower suction part is provided with an opening / closing panel connected to an opening / closing mechanism and driven to rotate,
The air conditioner indoor unit, wherein the open / close panel shields a front portion of the lower front suction portion and a front portion of the blowout portion when the air-conditioning operation is stopped. The said blowing part is equipped with the wind direction guide body which controls the blowing direction to a room | chamber interior according to an air-conditioning driving | operation, and shields the lower surface side of a blowing part at the time of an air-conditioning driving | operation stop. Air conditioner indoor unit. The said opening-and-closing panel board is drive-displaced to the position remove | deviated from the blowing ventilation path of the heat exchange air which blows off from a blowing part at the time of an air-conditioning driving | operation. Air conditioner indoor unit. The open / close panel plate is driven and displaced to a position that prevents heat exchange air blown from the blow-out portion from being sucked into the lower front suction portion during air-conditioning operation. Item 3. An air conditioner indoor unit according to any one of Items 2 to 3.

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