JP5676855B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner that blows air that has been conditioned into a room, and more particularly to an air conditioner that prevents condensation on an adjustment blade provided in a blowout port.

  Patent Literature 1 below discloses an air conditioner having a ceiling-suspended indoor unit. The indoor unit of the air conditioner includes a main body casing having a blowout opening on the front surface, a heat exchanger accommodated on the front side in the main body casing, and a blower fan accommodated on the rear side in the main body casing. I have. The blower fan blows forward the air sucked from the lower surface of the main body casing, and the heat exchanger performs heat exchange by passing an air flow discharged forward by the blower fan. Then, the temperature of the room is adjusted by blowing the heat-exchanged air flow into the room through the air outlet.

  On the other hand, an adjustment blade for adjusting the direction of airflow is provided at the outlet of the main casing. FIG. 5 is an enlarged side cross-sectional view of the vicinity of the outlet of an indoor unit of an air conditioner according to the related art (Patent Document 1). The adjusting blade adjusts the direction of the air flow in the left-right direction. And on the front side of the vertical blade 135, the horizontal blade 136 adjusts the direction of the air flow in the vertical direction.

JP 2002-106882 A (FIG. 1)

  In the indoor unit described in Patent Document 1, when the horizontal blade 136 is adjusted most downward as shown by a solid line in FIG. 5, the air flow passes exclusively under the horizontal blade 136 and the upper side of the horizontal blade 136 is not much. Do not pass. Further, even when the air flow passes above the horizontal blades 136, the air flow is difficult to reach the tip side of the horizontal blades 136 because the air volume is small. Therefore, during the cooling operation, warm air in the room can be easily touched on the upper surface of the horizontal blade 136, and the horizontal blade 136 is cooled by the cold air from the lower surface side. There was a risk of dripping. Conventionally, in order to prevent the condensed water from dripping into the room, measures such as forming irregularities on the upper surface of the horizontal blade 136 have been taken, but there is a problem that the appearance deteriorates.

  This invention is made | formed in view of the above situations, and it aims at providing the air conditioning apparatus which can prevent generation | occurrence | production of the dew condensation in an adjustment blade | wing.

(1) The air conditioner of the present invention houses a blower, a heat exchanger that exchanges heat by passing an air flow generated by the blower, the blower and the heat exchanger, and the heat exchange. A main body casing having a blowout port for blowing out the air flow that has passed through the vessel, wherein the heat exchanger has an upper side on the front side in the air flow blowing direction and a lower side on the air The heat exchanger is arranged so as to be located at the rear side in the flow blowing direction, and the heat exchanger allows heat exchange with the refrigerant by passing an air flow flowing forward from the blower, and further the air The flow is changed to a front obliquely downward direction substantially perpendicular to the heat exchanger and discharged, and the blowout port is 85 ° to 95 ° with respect to the heat exchanger from near the front surface of the heat exchanger. ° angle An upper wall portion of the formed flat, and a bottom wall portion opposed to the upper wall portion, the horizontal vane for adjusting the orientation of the air flow about the vertical direction is opposite the direction of the upper and lower wall portion, said provided outlet vertically swingably, the posture of the horizontal vane when adjusted to the most downward direction of the air flow, the upper wall portion of the line segment L passing through the front and rear ends of the horizontal vane basis And between the horizontal blade when the air flow direction is adjusted to the most downward direction and the upper wall portion, a layer of a cold air flow is formed on the upper surface of the horizontal blade during cooling operation. A ventilation path R for forming a cool air seal is formed, and the distances A and B are perpendicular to the upper wall portion, and the horizontal blades of the horizontal blades are adjusted when the direction of the air flow is adjusted downward . the spacing a from the upstream end of the air flow direction to the upper wall portion , A distance B from the upstream end of the horizontal vane to said lower wall portion, characterized in that it is set so as to satisfy the relation 1.5A <B <2.5A.

Since the air flow that has passed through the heat exchanger flows in a direction substantially perpendicular to the heat exchanger, the upper wall portion of the outlet is substantially perpendicular to the heat exchanger (85 ° to 95 °) as in the above configuration. °) to reduce the turbulence and flow resistance of the air flow by the formation, sufficient from the wind amount outlet can blow air flow, water Hirahane roots when adjusting the orientation of air flow most downward A sufficient air flow can also be made to flow through the ventilation path on the upper surface . Thus, suitably to form a cold seal on surface of the water Hirahane roots, it is possible to prevent the occurrence of dew condensation.
In addition, when the heat exchanger is inclined, the air flow that passes through the heat exchanger and flows substantially perpendicularly to the heat exchanger blows out obliquely forward and downward along the upper wall portion. because the, suitably flowing air stream at the bottom facing the upper surface of the horizontal vane to adjust the orientation of the air flow, it is possible to form the cold seal.

In addition, by setting the position of the upstream end of the adjustment blade (horizontal blade) in the air flow direction within the predetermined range in relation to the first and second wall portions (upper and lower wall portions) , the second wall The surface on the first wall (upper wall ) side of the adjusting blade (horizontal blade) while adequately air-conditioning the room by ensuring a sufficient amount of airflow whose direction is adjusted to the side of the head (lower side) In addition, an air flow having an air volume necessary for forming a cool air seal can be flowed. That is, it is possible to realize both the condensation prevention regulation blade adjusting and the regulatory blade (horizontal blade) of the wind direction using (horizontal blades).

(2) the horizontal vane when adjusting the orientation of air flow most downwardly, because substantially there is a parallel posture with the upper wall portion, the air flow blown out along the upper wall portion of water Hirahane tends to flow so as to cover the entire upper surface of the root, it is possible to form a reliable cold seal.

( 3 ) A vertical blade that adjusts the direction of the air flow in the left-right direction is provided at the outlet, and the upper end of the vertical blade is approximately the same height as the upper end of the horizontal blade that is adjusted downward. It is preferable that it is set.
With such a configuration, even when the horizontal blade is adjusted most downward, the direction of the air flow with respect to the longitudinal direction of the outlet can be suitably adjusted by the vertical blade.

  According to the air conditioning apparatus of the present invention, it is possible to suitably prevent the occurrence of condensation on the adjusting blade.

It is a front view which shows the indoor unit of the air conditioning apparatus which concerns on embodiment of this invention. It is a schematic sectional drawing of the indoor unit shown by FIG. It is a schematic plan view of the internal structure of the indoor unit shown in FIG. It is a schematic sectional drawing which expands and shows the blower outlet vicinity of the indoor unit shown by FIG. It is the schematic sectional drawing which expanded the blower outlet vicinity of the indoor unit of the air conditioning apparatus which concerns on a prior art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an indoor unit 10 of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the indoor unit 10 shown in FIG. FIG. 3 is a schematic plan view of the internal structure of the indoor unit 10 shown in FIG. The indoor unit 10 is a ceiling hanging type, and includes a main body casing 11 that is formed in a box shape that is long in the left-right direction and thin in the up-down direction. Inside the main body casing 11, a plurality of blower fans (blowers) 12, a heat exchanger 13, a motor (drive unit) 14 for driving the blower fans, and the like are provided.

  As shown in FIG. 2, the main body casing 11 includes a top plate portion 16 that can be suspended from the ceiling, a bottom plate portion 17 that is disposed facing the front side of the top plate portion 16, and a top plate. The grill cover 18 disposed facing the lower part of the rear side of the portion 16, and the side plate 19 (see FIG. 1) provided on the left and right sides of the top plate portion 16, the bottom plate portion 17, and the grill cover 18. I have. The rear end portion of the top plate portion 16 is bent downward to constitute the rear plate portion 16a. The grill cover 18 is formed with a suction port 20 for sucking indoor air into the main body casing 11. A partition plate 21 extending in the vertical direction is provided between the bottom plate portion 17 and the grill cover 18, and the partition plate 21 divides the inside of the main body casing 11 into two spaces 11 </ b> A and 11 </ b> B in the front-rear direction. ing. On the front surface of the main casing 11, a long rectangular outlet 22 elongated in the left-right direction is formed so as to open forward.

  As shown in FIG. 3, the plurality of blower fans 12 are arranged in the left-right direction in the space 11 </ b> B on the rear side in the main body casing 11, and are supported by a partition plate 21 and the like. Each blower fan 12 is a multiblade fan such as a sirocco fan, and is driven by a motor 14. The blower fan 12 is configured to suck indoor air from a suction port 20 (see FIG. 2) formed on the lower rear surface of the main body casing 11 and generate an air flow that flows into the space 11 </ b> A in front of the partition plate 21. Has been.

  As shown in FIG. 3, the heat exchanger 13 is arranged in the space 11 </ b> A on the front side in the main body casing 11 and is provided so as to pass the forward air flow generated by the blower fan 12. ing. The heat exchanger 13 includes a large number of fins 25 that are arranged side by side with a predetermined interval in the left-right direction, and a refrigerant pipe 26 that extends in the left-right direction through the fins 25. The heat exchanger 13 has a length extending over a large range in the left-right direction in the internal space of the main body casing 11, and is slightly biased to one side in the left-right direction (left side in the illustrated example) when viewed from the front. ing. On the other side of the heat exchanger 13 in the left-right direction (right side in the illustrated example), a pipe 27 and the like for circulating the refrigerant between the heat exchanger 13 and the outdoor unit are disposed adjacent to the heat exchanger 13. The plurality of blower fans 12 are arranged so as to be distributed in the left-right direction so as to send an air flow to the entire range of the heat exchanger 13 in the left-right direction. The air conditioner can perform a cooling operation by using the heat exchanger 13 as an evaporator, and can perform a heating operation by using it as a condenser.

  As shown in FIG. 2, the heat exchanger 13 is located on the front side (outlet 22 side; downstream side of the air flow) and on the lower side rear side (blower fan 12 side; upstream side of the air flow). The main body casing 11 is disposed so as to be inclined with respect to the top plate portion 16 or the bottom plate portion 17. Then, the air flow flowing forward from the blower fan 12 passes through the heat exchanger 13 to exchange heat with the refrigerant flowing in the refrigerant pipe 26, and is substantially perpendicular to the heat exchanger 13. It is changed to be directed obliquely downward and discharged.

  A heat insulating material 30 is provided on the lower surface of the front end portion of the top plate portion 16, and the upper wall portion 31 of the blowout port 22 is configured by the heat insulating material 30. Further, a drain pan 32 that receives the condensed water generated in the heat exchanger 13 is provided on the upper surface of the bottom plate portion 17, and a lower wall portion 33 of the blowout port 22 is configured by a front edge portion of the drain pan 32.

  FIG. 4 is an enlarged schematic cross-sectional view showing the vicinity of the outlet of the indoor unit shown in FIG. The lower surface of the upper wall portion 31 is a flat inclined surface that is inclined from the vicinity of the front surface of the heat exchanger 13 toward the front obliquely downward direction, and is formed substantially perpendicular to the heat exchanger 13. For example, the relative angle θ between the upper wall portion 31 and the heat exchanger 13 is set in a range of θ = 85 ° to 95 °. Specifically, in the present embodiment, θ = 90 ° is set. Yes. Therefore, the air flow that passes through the heat exchanger 13 and flows substantially perpendicularly to the heat exchanger 13 passes through the outlet 22 along the upper wall portion 31 with a small flow resistance and little disturbance. As a result, it is possible to suppress a decrease in the air volume and the air speed of the air flow blown out from the air outlet 22. Moreover, the upper surface of the lower wall part 33 is formed substantially horizontally.

  As shown in FIG. 4, the air outlet 22 is provided with an adjustment blade that adjusts the direction (wind direction) of the air flow that passes through the heat exchanger 13 and is blown out from the air outlet 22. The adjusting blades are a vertical blade (first adjusting blade) 35 that adjusts the wind direction in the left-right direction, and a horizontal blade (second adjusting blade) that is disposed on the front side of the vertical blade 35 and adjusts the wind direction in the vertical direction. 36.

  As shown in FIG. 3, a large number of vertical blades 35 are arranged side by side over a substantially entire length in the longitudinal direction of the blow-out port 22, and each can swing left and right around the first axis X <b> 1 in the vertical direction. Are provided on the lower wall portion 33. The vertical blades 35 are configured such that several adjacent (for example, four) blades are connected via an interlocking member 39, and the connected several vertical blades 35 swing together in the same direction. ing.

  The horizontal blade 36 has a length that extends over substantially the entire length of the outlet 22. The horizontal blades 36 are provided so as to be swingable up and down around the second axis X2 along the left-right direction via a support member (not shown), and are configured to be driven to swing by a motor or a link mechanism (not shown). . The horizontal blades 36 adjust the airflow direction up and down between these postures, with the horizontal posture shown by the two-dot chain line in FIG. 4 as the upper limit of the wind direction adjustment and the downward posture shown by the solid line as the lower limit of the wind direction adjustment. It is configured. Moreover, the horizontal blade | wing 36 is formed in the curved shape so that it may become convex upward in the side view in the state made into the horizontal attitude | position.

  As shown by a solid line in FIG. 4, when the horizontal blade 36 is in the most downward posture, an interval A through which an air flow can pass is formed between the rear end portion 36 a and the upper wall portion 31. A ventilation path R is constituted by the interval A. The ventilation path R is provided so that an air flow that passes through the heat exchanger 13 and is discharged obliquely downward in the front direction flows along the upper surface of the horizontal blade 36. Therefore, during the cooling operation, a cold air seal composed of a cold air flow layer is formed on the upper surface of the horizontal blade 36, and condensation occurs on the upper surface 36 c when warm air in the room touches the upper surface of the horizontal blade 36. Is prevented.

  Here, the larger the dimension A of the ventilation path R is, the more cold air is supplied to the upper surface 36a of the horizontal blade 36, and the action of preventing condensation is increased. The air flow blown downward is reduced, and it becomes difficult to adjust the wind direction to a desired direction. Therefore, in the present embodiment, the airflow of the air flow necessary for preventing condensation is secured while ensuring a sufficient airflow of the airflow that passes below the horizontal blade 36 and blows downward. The position of the horizontal blade 36 in the downward posture is appropriately set so that it can be supplied to the upper surface 36a.

Specifically, the position of the rear end 36a of the horizontal blade 36 in the downward posture is set as follows. First, with respect to the direction perpendicular to the upper wall portion 31 of the air outlet 22, a gap A is provided between the rear end 36 a of the horizontal blade 36 and the upper wall portion 31, and the rear end 36 a of the horizontal blade 36 and the lower end A space B is provided between the wall portion 33 and the wall portion 33. The interval A and the interval B are set so as to satisfy the relationship shown below.
1.5A <B <2.5A (A: B = 2: 3 to 2: 5) (1)

  Regarding the formula (1), when the dimension of the interval B is smaller than 1.5A, a lot of cool air can be supplied to the upper side of the horizontal blade 36, but the amount of the cool air flowing below the horizontal blade 36 is reduced. The wind direction by the horizontal blades 36 is not sufficiently adjusted. On the contrary, when the distance B is larger than 2.5 A, the amount of air flowing below the horizontal blades 36 is increased and the direction of airflow can be adjusted suitably, but only a small amount of cold air is supplied to the upper side of the horizontal blades 36. Therefore, it is difficult to form a sufficient cool air seal on the upper surface 36c of the horizontal blade 36. Therefore, both the adjustment of the wind direction by the horizontal blade 36 and the prevention of dew condensation on the horizontal blade 36 can be realized by setting the distances A and B as shown in Expression (1).

In addition, the space | interval A and the space | interval B of the rear-end part 36a of the horizontal blade | wing 36, and the upper wall part 31 and the lower wall part 33 of the blower outlet 22 are the following formula | equation in the range shown by Formula (1). It is more preferable to set so as to satisfy the relationship (2).
B = 2A (A: B = 1: 2) (2)

  Further, by forming the upper wall portion 31 of the outlet 22 substantially perpendicular to the heat exchanger 13, the air flow that has passed through the heat exchanger 13 flows along the upper wall portion 31 with a small flow resistance. Therefore, an air flow having a sufficient air volume can be supplied to the ventilation path R. This can more reliably prevent the occurrence of condensation.

  The horizontal blade 36 in the most downward posture is substantially parallel to the upper wall portion 31 of the air outlet 22 (substantially perpendicular to the heat exchanger 13). They are arranged at a relative angle in the range of −5 ° to + 5 °. Therefore, the airflow that has passed through the ventilation path R can easily flow along the upper surface 36c of the horizontal blade 36, and a cool air seal can be suitably formed on the entire upper surface 36c. The posture of the horizontal blade 36 is based on a line segment L passing through the front and rear end portions of the horizontal blade 36.

  The vertical blades 35 are formed at substantially the same height as the rear ends 36a of the horizontal blades 36 in the most downward posture as shown by solid lines in FIG. Therefore, the air flow whose wind direction is adjusted downward through the lower side of the horizontal blade 36 can be adjusted in the left-right direction by the vertical blade 35.

  The present invention is not limited to the above-described embodiment, and the design can be changed as appropriate. The present invention can also be applied to an air conditioner other than the air conditioner having the ceiling-suspended indoor unit 10. For example, the present invention can also be applied to an air conditioner having an indoor unit in which a blowout port is provided downward like a ceiling-embedded type.

DESCRIPTION OF SYMBOLS 10 Indoor unit 11 Main body casing 12 Blower fan 13 Heat exchanger 22 Outlet 31 Upper wall part 33 Lower wall part 35 Vertical blade | wing 36 Horizontal blade | wing

Claims (2)

While containing a blower (12), a heat exchanger (13) that exchanges heat by passing an air flow generated by the blower (12), and the blower (12) and the heat exchanger (13) A main body casing (11) having a blowout opening (22) for blowing out the air flow that has passed through the heat exchanger (13),
The heat exchanger (13) is arranged so as to be inclined so that the upper side is located on the front side in the air flow blowing direction and the lower side is located on the rear side in the air blowing direction,
The heat exchanger (13) exchanges heat with the refrigerant by passing an air flow flowing forward from the blower (12), and further passes the air flow to the heat exchanger (13). The direction is changed to a substantially diagonally downward front and discharged.
A planar upper wall portion (31) in which the outlet (22) is formed at an angle of 85 ° to 95 ° with respect to the heat exchanger (13) from near the front surface of the heat exchanger (13); , and a lower wall portion facing the upper wall portion (33),
A horizontal blade (36) for adjusting the direction of the air flow in the vertical direction, which is the opposite direction of the upper and lower wall portions (31, 33) , is provided in the blowout port (22) so as to be vertically swingable.
The posture of the horizontal blade (36) when the direction of the air flow is adjusted to the most downward is the upper wall portion (31) with reference to a line segment (L) passing through the front and rear ends of the horizontal blade (36). Is substantially parallel to
Between the horizontal blade (36) when the direction of the air flow is adjusted most downward and the upper wall portion (31), the upper surface (36c) of the horizontal blade (36) is cold during cooling operation. A ventilation path (R) is formed to form a cool air seal consisting of a layer of air flow,
The distance (A, B) in the direction perpendicular to the upper wall portion (31), and the upstream side in the air flow direction of the horizontal blade (36) when the air flow direction is adjusted to the most downward direction. The distance (A) from the end (36a) to the upper wall (31), and the distance (B) from the upstream end (36a) of the horizontal blade (36) to the lower wall (33) But,
1.5A <B <2.5A
An air conditioner that is set to satisfy the above relationship. A vertical blade (35) for adjusting the direction of the air flow in the left-right direction is provided at the outlet (22),
The air conditioner according to claim 1, wherein an upper end of the vertical blade (35) is set to be substantially the same height as an upper end of the horizontal blade (36) adjusted downward most .

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