JP2018025315A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of preventing dew condensation on a housing.SOLUTION: An air conditioner includes: a housing in which a suction port and a blowout port 5 are opened; an air blowing passage 7 for communicating the suction port and the blowout port 5; a blower disposed in the air blowing passage 7 and for allowing the indoor air to flow in from the suction port and delivering the air to the indoors from the blowout port 5; and a first louver 10 and a second louver 21 provided at the blowout port 5 and for varying the wind direction. The air conditioner has a first air blowing state for blowing out an airflow upward or substantially horizontally, and a second air blowing state for blowing out the airflow downward, by the first louver 10 and the second louver 21. During the first air blowing state, the second louver 21 disposed above the first louver 10 is arranged along an upper wall 7a of the air blowing passage 7, and a tip 21c of the second louver 21 is disposed further in front than a front end 7e of the upper wall 7a of the air blowing passage 7.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an air conditioner including a plurality of louvers.

  A conventional air conditioner is disclosed in Patent Document 1. This air conditioner connects an indoor unit attached to an indoor wall surface and an outdoor unit installed outdoors by wiring.

  A suction port opens at the front upper surface and the upper surface of the housing of the indoor unit, and an air outlet opens at the lower front surface. A blower passage that communicates the suction port and the blowout port is provided in the housing. A blower and a heat exchanger are arranged in the air passage. Indoor air flows into the air passage from the suction port by the blower, and air that has exchanged heat with the heat exchanger is sent into the room through the air outlet.

  A first louver is provided at the lower end of the air outlet, and a second louver is provided above the first louver. The direction of the airflow sent from the outlet is varied by the first louver and the second louver.

  In the air conditioner having the above configuration, in the cooling operation, the first louver and the second louver are arranged substantially horizontally, and the air flow is sent out from the air outlet in a substantially horizontal direction. In the heating operation, the first louver and the second louver are arranged substantially vertically, and the airflow is sent downward from the outlet. Further, when the cooling operation or the heating operation is performed by weak air blowing, the first louver and the second louver are arranged with their tips directed upward, and the airflow is sent obliquely upward from the air outlet.

JP 2009-79846 A (FIG. 6)

  However, according to the above-described conventional air conditioner, cold air flows along the front wall of the housing when the air conditioner is sent out substantially horizontally or upward from the outlet. For this reason, there has been a problem that condensation occurs on the front wall of the housing.

  An object of this invention is to provide the air conditioner which can prevent the dew condensation on a housing | casing.

  In order to achieve the above object, the present invention provides a housing that opens a suction port and a blowout port, a blower passage that allows the suction port and the blower port to communicate with each other, and a suction passage that is disposed in the blower passage. In an air conditioner comprising: a blower for inflowing indoor air from the blowout port and sending out air into the room from the blowout port; and a first louver and a second louver provided at the blowout port to change the wind direction, The first air blowing state in which the air flow is blown upward or substantially in the horizontal direction from the air outlet, and the second air blowing state in which the air flow is blown downward, and the second air is disposed above the first louver in the first air blowing state. A louver is disposed along the upper wall of the air passage, and the tip of the second louver is disposed forward of the front end of the upper wall of the air passage.

  Further, in the air conditioner having the above-described configuration, the present invention provides a recess in the upper wall of the air passage, and the second louver is close to the rear wall of the recess in the first air blowing state. And the rear end of the lower surface of the second louver and the lower end of the rear wall of the recess are arranged at substantially the same height.

  In the air conditioner configured as described above, the lower surface of the second louver and the upper wall upstream of the concave portion of the air passage are arranged on substantially the same plane in the first air blowing state. It is characterized by.

  In the air conditioner configured as described above, the rear wall of the recess is formed by an inclined surface, and the upper surface of the second louver is formed along the inclined surface.

  According to the present invention, in the air conditioner having the above-described configuration, a movable plate that is movable along the top surface of the concave portion and that is movable in the vertical direction is provided, and a rear end of the bottom surface of the movable plate in the second blowing state. The lower end of the rear wall of the recess is arranged at substantially the same height.

  In the air conditioner having the above configuration, the present invention is characterized in that the movable plate is pushed up by the second louver when in the first air blowing state and descends by its own weight when in the second air blowing state.

  In the air conditioner configured as described above, the present invention is characterized in that a biasing portion that biases the movable plate downward is provided.

  Further, in the air conditioner configured as described above, the second louver is arranged along the upper wall of the air passage when the air blowing is stopped, and the air outlet is closed and closed by the first louver. Protrusions that contact the first louver are provided at both end portions of the second louver.

  According to the present invention, the second louver is arranged along the upper wall of the air passage when the air flow is blown upward or substantially horizontally, and the front end of the second louver is more than the front end of the upper wall of the air passage. Arranged forward. Thereby, cold air is sent out along the 2nd louver at the time of air_conditionaing | cooling operation, and the distribution | circulation of the cold air along the front wall of a housing | casing is suppressed. Thereby, generation | occurrence | production of the dew condensation on a housing | casing can be prevented.

The perspective view which shows the air conditioner of 1st Embodiment of this invention. The front view of the indoor unit of the air conditioner of 1st Embodiment of this invention AA sectional view of FIG. Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 1st Embodiment of this invention Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 1st Embodiment of this invention Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 1st Embodiment of this invention Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 2nd Embodiment of this invention Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 2nd Embodiment of this invention Side surface sectional drawing of the blower outlet vicinity of the indoor unit of the air conditioner of 3rd Embodiment of this invention

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a perspective view of the air conditioner 100 of the first embodiment and a front view of the indoor unit 1. The air conditioner 100 includes an indoor unit 1 and an outdoor unit 99. The indoor unit 1 is installed on a wall surface W in the room, and is connected to an outdoor unit 99 installed outdoors by a pipe 98. The indoor unit 1 is instructed to start or stop operation by operating a remote controller (not shown). In the following description, the upper side is the upper side, the lower side is the lower side, the left side is the left side, the right side is the right side, the front side is the front side, and the back side is the rear side, toward the indoor unit 1 attached to the wall surface W.

  The interior of the indoor unit 1 is covered with a housing 2 having a front panel 3 that can be attached and detached arranged on the front surface. A power cord 6 is led out from the side surface of the housing 2. The power cord 6 is connected to a power outlet C provided on the wall surface W and supplies power to the indoor unit 1.

  A suction port 4 extends in the left-right direction on the upper surface of the housing 2, and an air outlet 5 extends in the left-right direction on the inclined surface at the lower front of the housing 2.

  FIG. 3 shows a cross-sectional view taken along the line AA of FIG. Inside the housing 2 is provided a blower passage 7 that allows the suction port 4 and the blowout port 5 to communicate with each other. A blower 9 that sends out air is disposed in the blower passage 7. Indoor air flows into the air passage 7 from the suction port 4 by driving the blower 9 and is sent out from the air outlet 5. A cross flow fan is preferably used as the fan included in the blower 9, but another type of blower 9, for example, a blower having a propeller fan may be used.

  A heat exchanger 8 is arranged between the suction port 4 and the blower 9 in the blower passage 7. The heat exchanger 8 is incorporated in the refrigeration cycle and is connected to a compressor (not shown) disposed in the outdoor unit 99.

  The air outlet 5 is provided with a louver 10, a louver 21 and a louver 22 that change the wind direction in the vertical direction. The louver 10 (first louver) is formed in a flat plate shape and is provided so as to be rotatable around a rear end.

  The louver 22 is formed in a flat plate shape and is disposed above the louver 10. The louver 21 (second louver) is formed in a flat plate shape substantially parallel to the louver 22, protrudes forward from the louver 22, and is disposed above the louver 22. The louver 21 and the louver 22 are connected by a vertical connecting portion 20 and are provided so as to be integrally rotatable around a rear end.

  In addition, a recess 7 b is provided in the upper wall 7 a of the air passage 7 in the vicinity of the outlet 5. The recess 7b is formed to have a depth substantially equal to the thickness of the louver 21. The rear wall 7c of the recess 7b is close to the rear end 21a of the louver 21.

  In the air conditioner 100 having the above-described configuration, the louver 10 and the louver 21 are disposed at the origin position shown in FIG. At the origin position, the louver 21 is disposed in the recess 7 b along the upper wall 7 a of the air passage 7, and the louver 10 abuts the tip 21 c of the louver 21 to close the outlet 5.

  When the heating operation or the cooling operation is started, the compressor and the blower 9 are driven. Thereby, the air which flowed into the ventilation path 7 from the suction inlet 4 heat-exchanges with the heat exchanger 8, and is sent out indoors from the blower outlet 5, respectively.

  FIG. 4 is a side sectional view showing the vicinity of the air outlet 5 at the start of the heating operation. At the start of the heating operation, the air conditioner 100 is set in the downward blowing state (second blowing state). In the downward blowing state, the louver 10, the louver 21, and the louver 22 are arranged substantially in parallel and inclined forward and downward. As a result, an air flow (warm air) is blown downward from the outlet 5 and the temperature of the room is raised.

  FIG. 5 is a side sectional view showing the vicinity of the air outlet 5 at the start of the cooling operation. At the start of the cooling operation, the air conditioner 100 is set to a horizontal blowing state (first blowing state). In the horizontal blowing state, the louver 10 is disposed so as to be inclined slightly forward with respect to the horizontal. The louver 21 is disposed in the recess 7b along the upper wall 7a of the air passage 7, and the louver 21 and the louver 22 are disposed substantially horizontally. Thereby, an airflow (cold air) is blown out from the blower outlet 5 in a substantially horizontal direction, and the temperature in the room is lowered.

  Moreover, when the heating operation and the cooling operation are started and a predetermined period has elapsed, the air conditioner 100 is set to the upward blowing state (first blowing state). In the upward blowing state, as shown in FIG. 6, the louver 10 is disposed so as to be slightly inclined forward with respect to the horizontal. The louver 21 and the louver 22 are arranged at the same position as the horizontal blowing position. Thereby, an airflow is blown upward from the blower outlet 5, and the airflow reaching the ceiling wall reaches the wide range through the indoor ceiling wall by the Coanda effect. Thereby, indoor temperature can be maintained uniformly.

  As shown in FIGS. 5 and 6, the louver 21 is arranged in the recess 7 b along the upper wall 7 a of the air passage 7 in the horizontal blowing state and the upward blowing state. At this time, the front end 21 c of the louver 21 is arranged in front of the front end 7 e of the upper wall 7 a of the air passage 7. Thereby, the cold air sent along the lower surface 21b of the louver 21 during the cooling operation is sufficiently separated from the front wall 2b of the housing 2, and condensation on the front wall 2b can be prevented.

  Further, the rear end 21a of the lower surface 21b of the louver 21 disposed in the recess 7b is close to the rear wall 7c of the recess 7b and is disposed at substantially the same height as the lower end 7d of the rear wall 7c. For this reason, the lower surface 21 b of the louver 21 and the upper wall 7 a upstream of the recess 7 b of the air passage 7 are arranged on substantially the same plane.

  Thereby, formation of the level | step difference by the louver 21 distribute | arranged along the upper wall 7a of the ventilation path 7 is prevented. Therefore, it is possible to prevent the occurrence of turbulent flow due to a step, improve the air blowing efficiency, and reduce noise.

  According to the present embodiment, the louver 21 (second louver) is arranged along the upper wall 7a of the air passage 7 in the horizontal blowing state (first blowing state) and the upper blowing state (first blowing state). The front end 21c is arranged in front of the front end 7e of the upper wall 7a of the air passage 7. Thereby, the cold air is sent out along the louver 21 during the cooling operation, and the circulation of the cold air along the front wall 2b of the housing 2 is suppressed. Thereby, generation | occurrence | production of the dew condensation on the housing | casing 2 can be prevented.

  In addition, the rear end 21a of the lower surface 21b of the louver 21 and the lower end 7d of the rear wall 7c of the concave portion 7b are arranged at substantially the same height in the horizontal blowing state and the upward blowing state. Thereby, formation of the level | step difference by the louver 21 is prevented, generation | occurrence | production of a turbulent flow is prevented, ventilation efficiency can be improved, and noise can be reduced.

  Further, the lower wall 21b of the louver 21 and the upper wall 7a upstream of the recess 7b of the air passage 7 are arranged on substantially the same plane in the horizontal blowing state and the upward blowing state. Thereby, formation of the level | step difference by the louver 21 can be prevented easily.

  In the present embodiment, the upward blowing state may be omitted. Alternatively, the horizontal blowing state may be omitted and the cooling operation may be performed in the upward blowing state.

  Alternatively, the rear wall 7c of the recess 7b may be formed by an inclined surface that is continuous with the upper wall 7a upstream of the recess 7b of the air passage 7, and the upper surface of the louver 21 may be formed along the inclined surface. Thereby, generation | occurrence | production of the turbulent flow by the level | step difference formed of the rear wall 7c of the recessed part 7b at the time of a downward blowing state can be suppressed.

Second Embodiment
Next, FIG. 7 shows a side sectional view of the vicinity of the air outlet 5 of the indoor unit 1 of the air conditioner 100 of the second embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. This embodiment is different from the first embodiment in that the movable plate 16 is provided in the recess 7b. Other parts are the same as those in the first embodiment.

  The movable plate 16 is formed in a flat plate shape along the upper surface of the recess 7b, and is arranged to be movable in the vertical direction. Locking claws (not shown) for locking the lowered movable plate 16 are provided at both end portions of the air outlet 5.

  As shown in the figure, the movable plate 16 descends by its own weight when in the downward blowing state. At this time, the rear end 16c of the lower surface 16b of the movable plate 16 and the lower end 7d of the rear wall 7c of the recess 7b are arranged at substantially the same height. At this time, the lower surface 16b of the movable plate 16 and the upper wall 7a upstream of the recess 7b of the air passage 7 are formed on substantially the same plane.

  This prevents the formation of a step due to the rear wall 7c of the recess 7b in the downward blowing state (second blowing state). Thereby, generation | occurrence | production of the turbulent flow by a level | step difference can be prevented, ventilation noise can be improved, and noise can be reduced.

  FIG. 8 shows a side sectional view of the vicinity of the outlet 5 in the horizontal outlet state. The movable plate 16 is pushed upward by the louver 21 in the horizontal blowing state and the upward blowing state. At this time, the lower surface 21b of the louver 21 and the upper wall 7a upstream of the recess 7b of the air passage 7 are arranged on substantially the same plane. Thereby, similarly to 1st Embodiment, the level difference formation by the louver 21 of a horizontal blowing state and an upper blowing state can be prevented, and a turbulent flow can be prevented.

  According to this embodiment, the same effects as those of the first embodiment can be obtained. Moreover, the movable plate 16 movable up and down is provided, and the lower end 16c of the lower surface 16b of the movable plate 16 and the lower end 7d of the rear wall 7c of the recess 7b are substantially the same height in the downward blowing state (second blowing state). Arranged. Thereby, the formation of a step by the rear wall 7c of the recess 7b can be prevented to prevent the generation of turbulent flow, and the blowing efficiency can be improved and the noise can be reduced.

  Further, the movable plate 16 is pushed up by the louver 21 when the movable plate 16 is in the horizontal blowing state and the upper blowing state, and descends by its own weight when the movable plate 16 is in the lower blowing state. Thereby, the raising / lowering operation | movement of the louver 21 is easily realizable.

  In the present embodiment, an urging portion (not shown) such as a spring that urges the movable plate 16 downward may be provided on the upper surface 16 a of the movable plate 16. Thereby, it is possible to prevent the movable plate 16 from being lifted by the airflow flowing through the air passage 7 when in the downward blowing state.

<Third Embodiment>
Next, FIG. 9 shows a side sectional view of the vicinity of the air outlet 5 of the indoor unit 1 of the air conditioner 100 of the third embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the protrusion 15 is provided on the lower surface 21 b of the louver 21. Other parts are the same as those in the first embodiment.

  The protrusions 15 protrude from the lower surface 21 b of the louver 21 and are provided at both end portions of the louver 21.

  The louver 10 and the louver 21 are arranged at the origin position shown in FIG. At the origin position, the louver 21 is arranged in the recess 7 b along the upper wall 7 a of the air passage 7, and the louver 10 abuts against the protrusion 15 to close the outlet 5. When changing the air direction of the air outlet 5, the louver 10 and the louver 21 are arranged at predetermined positions after returning to the original position.

  The louver 10 and the louver 21 may be deformed due to aging. At this time, when the louver 10 and the louver 21 return to the original position, they are pressed against each other to correct the deformation. However, when the contact position between the louver 10 and the louver 21 varies, there is a possibility that the origin position may vary without being corrected to a desired shape depending on the contact position.

  For this reason, by providing the protrusions 15 at both end portions of the louver 21, fluctuations in the contact position of the louver 10 can be prevented. Thereby, even if the louver 10 and the louver 21 are deformed due to aging, they are stably arranged at a predetermined origin position.

  According to this embodiment, the same effects as those of the first embodiment can be obtained. In addition, since the protrusions 15 are provided at both end portions of the louver 21 (second louver), the louver 10 and the louver 21 can be stably arranged at the origin position.

  In addition, the structure which combined 2nd Embodiment with this embodiment may be sufficient.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention. Further, some or all of the embodiments of the present invention may be used in combination.

  For example, the louver 10 is formed of a rectangular flat plate, but may be an arcuate or curved flat plate. Further, a structure having a flat plate portion and a bent portion (a top surface is a flat plate portion, a lower surface is a bent portion, an upper surface is a bent portion, and a lower surface is a bent portion) may be used.

  Moreover, although it is formed in the flat shape of the louver 21, it may be a shape that can be accommodated in the concave portion 7b in the first blowing state. For example, the lower surface of the louver 21 may be a flat plate portion and the upper surface may have a curved portion.

  According to the present invention, it can be used for an air conditioner including a plurality of louvers.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Housing | casing 2b Front wall 4 Suction inlet 5 Outlet 7 Blower passage 7a Upper wall 7b Recessed part 7c Rear wall 8 Heat exchanger 9 Blower 10 Louver (1st louver)
DESCRIPTION OF SYMBOLS 15 Protrusion part 16 Movable plate 16a Upper surface 16b Lower surface 16c Rear end 20 Connection part 21 Louver (2nd louver)
21a Rear end 21b Lower surface 21c Front end 22 Louver 99 Outdoor unit 100 Air conditioner

Claims (7)

  A housing that opens the suction port and the air outlet, an air passage that communicates the air inlet and the air outlet, and an air that is disposed in the air passage and that allows indoor air to flow in from the air inlet. An air conditioner comprising: a blower that sends air into the room; and a first louver and a second louver that are provided at the blowout port and change the wind direction. The second louver, which has a first blowing state that blows out and a second blowing state that blows downward, is disposed above the first louver in the first blowing state, along the upper wall of the blowing passage. It arrange | positions and the front-end | tip of the said 2nd louver is distribute | arranged ahead rather than the front end of the upper wall of the said ventilation path, The air conditioner characterized by the above-mentioned.   A recess is provided in the upper wall of the air passage, and the second louver is disposed in the recess with the rear end adjacent to the rear wall of the recess in the first air blowing state, and the lower surface of the second louver. 2. The air conditioner according to claim 1, wherein a rear end of the rear wall and a lower end of the rear wall of the recess are arranged at substantially the same height.   3. The air conditioner according to claim 2, wherein the lower surface of the second louver and the upper wall upstream of the recess of the air passage are arranged on substantially the same plane in the first air blowing state. .   A movable plate arranged along the upper surface of the concave portion and movable in the vertical direction is provided, and the rear end of the lower surface of the movable plate and the lower end of the rear wall of the concave portion are substantially the same height in the second blowing state. The air conditioner according to claim 2, wherein the air conditioner is disposed in the air conditioner.   5. The air conditioner according to claim 4, wherein the movable plate is pushed up by the second louver when in the first blowing state and descends by its own weight when in the second blowing state.   The air conditioner according to claim 4, further comprising an urging portion that urges the movable plate downward.   The second louver is arranged along the upper wall of the air passage when the air flow is stopped, and the air outlet is closed by the first louver, and a protrusion that abuts the closed first louver is provided in the second louver. The air conditioner according to any one of claims 1 to 6, wherein the air conditioner is provided at both side end portions.

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