JP3198911B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner provided with horizontal guide vanes at an air outlet.

[0002]

2. Description of the Related Art In an air conditioner provided with a horizontal flap (horizontal guide vane) at an air-conditioning air outlet and controlling the blowing direction by the horizontal flap, the horizontal flap is cooled during cooling operation, and the surface thereof is cooled. May cause condensation. When such dew is formed, the dew drops into the room from the surface of the horizontal flap, and the use comfort is significantly impaired.

An air conditioner described in Japanese Patent Application Laid-Open No. 6-159790 can be mentioned as one that prevents the above-mentioned dew formation. FIG. 4 is a partially enlarged sectional view of the indoor unit of the air conditioner. In FIG.
Reference numeral 1 denotes an indoor unit casing.
1, a heat exchanger 39 and a fan 36 are provided. An outlet 35 opens diagonally downward from the lower front surface to the bottom surface of the indoor unit casing 31. A scroll portion 37 for guiding the conditioned air fed by the fan 36 and a drain pan 3
8 and a guide surface 38a formed by a part thereof. The outlet 35 is provided with two horizontal flaps 32 and 34. The wind direction is adjusted mainly by the upper horizontal flap (main flap) 32.
The lower horizontal flap (auxiliary flap) 34 is provided to assist it.

Next, the movement of the horizontal flaps 32 and 34 will be described. In the figure, A is a state at the time of stopping the air supply, and shows a fully closed state in which each of the horizontal flaps 32 and 34 functions as an outlet cover. Next, in the case of horizontal blowing, counterclockwise rotation around the flap shafts 33 and 40 in the figure so that the lower side of the horizontal flaps 32 and 34 goes inward from the outlet 35 from the fully closed state A. The horizontal flaps 32 and 34 are pivoted in the directions shown in FIG. In the case of downward blowing, the horizontal flaps 32 and 34 are rotated clockwise in the opposite direction from the fully closed state A to the position C shown in FIG.

In the above conventional example, two horizontal flaps 3
By rotating 2, 34 as described above, while always ensuring a sufficient blow opening regardless of the blow direction,
In the case of horizontal blowing, the anti-blowing sides of the horizontal flaps 32 and 34 are positioned inside the blow-out port 35.
The cooling operation is performed mainly by horizontal blowing because the cooling air is blown out easily to the floor side in the room, and is mainly performed by horizontal blowing. Since it is arranged in the conditioned air with low humidity, it is possible to avoid the occurrence of condensation on the air.

[0006]

However, in the conventional air conditioner described above, the horizontal flaps 32 and 34 are respectively rotated around one axis to adjust the blowing direction. Therefore, if the blow-out side is to be positioned inside the blow-out port 35 during horizontal blowing, the diffuser length cannot be sufficiently set at the time of downward blowing, and there is a problem that the blowing efficiency of the fan is reduced. In addition, since it is necessary to provide a space necessary for the horizontal flaps 32 and 34 to rotate near the upper edge and the lower edge of the outlet 35, a gap is generated even in the fully closed state A, and the appearance is impaired. There was also a problem that was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to prevent the occurrence of dew condensation on horizontal guide blades, and to improve the blowing efficiency. An object of the present invention is to provide an air conditioner capable of performing the above.

[0008]

Therefore, an air conditioner according to a first aspect of the present invention provides a horizontal guide blade 2 for adjusting the blowing direction of conditioned air.
In the air conditioner provided with the air outlet 5, the horizontal guide vanes
And a blade drive mechanism for driving the blade drive mechanism 2
The two horizontal guide vanes 2 are arranged side by side in the front-rear direction.
When pivotally supported around the movable shafts 3 and 4 respectively,
The two movable shafts 3 and 4 are respectively connected to the horizontal guide blades 2.
To be moved in a plane substantially perpendicular to the length direction of the
In the case of horizontal blowing in which the conditioned air is blown forward, the rear edge 2a side of the horizontal guide blade 2 is located inside the outlet 5, while in the case of downward blowing. The rear edge 2a of the horizontal guide blade 2 is located near the upper edge 5a of the outlet 5 and the front edge of the horizontal guide blade 2
2b is located near the lower edge 5b of the outlet 5 and
The trailing edge 2a of the horizontal guide blade 2 is located near the upper edge 5a of the outlet 5.
And close the outlet 5 with the horizontal guide vanes 2
It is characterized in that the the like.

In the air conditioner of the first aspect, since the rear edge 2a side of the horizontal guide blade 2 is positioned inside the air outlet 5, horizontal air blowing is performed, so that cooling mainly performed in this state is performed. It is possible to prevent dew condensation on the horizontal guide blades 2 during operation, and furthermore, since downward blowing is performed with the rear edge 2a of the horizontal guide blades 2 positioned near the upper edge 5a of the outlet 5, the length of the diffuser is reduced. It is possible to improve the blowing efficiency as sufficient. In addition, the air condition
In the Japanese machine, horizontal guidance is provided by the blade drive mechanism described above.
Since the blades 2 are driven, the upper edge and the lower edge of the outlet 5 are near the lower edge.
There is no need to provide a space for driving the horizontal guide vanes 2
No. Therefore, the outlet 5 was closed by the horizontal guide blades 2.
It is possible to improve the appearance in the state.

[0010] The air conditioner of claim 2, the both movable shaft 3 and 4 provided on the rear side of the horizontal guide vanes 2, the lower blow sometimes forward than when blown horizontally above the movable shaft 3 and 4, respectively It is characterized by being located.

In the air conditioner of the second aspect , since the movable shafts 3 and 4 are provided on the rear side of the horizontal guide blades 2, the movable range thereof is reduced, and the structure is simplified and compact. It becomes possible.

[0012]

Next, specific embodiments of the air conditioner of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a partially enlarged sectional view showing the vicinity of an outlet 5 of the air conditioner. This air conditioner is also provided with a heat exchanger (not shown) and a fan 6 in the indoor unit casing 1 in the same manner as in the above-described conventional example. I have. The outlet 5 is provided with a horizontal flap (horizontal guide vane) 2 for adjusting the direction of the blown conditioned air, and a scroll portion 7 for guiding the conditioned air fed by the fan 6; A guide surface 8a formed by a part of the drain pan 8 is continuous.

The direction and position of the horizontal flap 2 can be changed by a blade drive mechanism for adjusting the wind direction. FIG. 2 is an exploded perspective view of the blade drive mechanism. At the end of the horizontal flap 2, two shaft holes,
That is, the first shaft hole 13 and the second shaft hole 14 are formed. These shaft holes 13 and 14 are provided on the rear side of the center of the horizontal flap 2, and the first shaft hole 13 has the first link 1.
The first movable shaft 3 provided at the front end of the second link 12 is rotatably inserted, while the second movable shaft 4 provided at the front end of the second link 12 is rotatable in the second shaft hole 14. The horizontal flap 2 is supported by the first movable shaft 3 and the second movable shaft 4. In addition, the first link 1
1 is driven using the first stepping motor 19 as a driving source, and the second link 12 is driven using the second stepping motor 20 as a driving source. Next, these driving mechanisms will be described. Each of the above stepping motors 1
9 and 20, a first lever member 17 and a second lever member 18 are respectively provided with connecting protrusions 17b and 18b provided on one end side thereof.
And the rotating shafts 19a and 20a are engaged with each other. Lever shafts 17a and 18a protrude from the other ends of the lever members 17 and 18, respectively.
a and 18a are rotatably inserted into lever shaft holes 11a and 12a formed in the rear ends of the links 11 and 12, respectively. In the vicinity of the center of each of the links 11, 12, slide grooves 11b, 12b are formed so as to extend in the length direction thereof, and the slide grooves 11b, 12b are provided fixed to the housing of the blade drive mechanism. The first fixing pin 15,
The second fixing pins 16 are inserted respectively. That is, the first link 11 and the second link 12 are the first link, respectively.
It is slidable with respect to the fixing pin 15 and the second fixing pin 16 and is rotatable about these. In the above description, the blade driving mechanism at one end of the horizontal flap 2 has been described, but a blade driving mechanism that performs the same operation in synchronization with the blade driving mechanism is provided at the other end (not shown). At this time, a stepping motor may be provided on the other end side as a drive source.
May be configured to transmit the power of the stepping motors 19 and 20 to the other end by a shaft or the like.

FIG. 3 is a schematic structural view for explaining the outline of the operation of the blade driving mechanism. Each stepping motor 1
When the rotation shafts 19a and 20a of the rotation shafts 9 and 20 rotate, the lever shafts 17a and 18a of the first lever member 17 and the second lever member 18 rotate about the rotation shafts. Then, this rotation is transmitted to the rear ends of the first link 11 and the second link 12, respectively, and the slide grooves 11b, 12b are respectively fixed to the fixing pins 15, 16 respectively.
The links 11 and 12 are driven while sliding with respect to. The movement of each of the links 11 and 12 is controlled by the horizontal flap 2 via the first movable shaft 3 and the second movable shaft 4.
Is transmitted to Therefore, when the rotating shafts 19a and 20a, the lever shafts 17a and 18a, and the movable shafts 3 and 4 are arranged on a straight line, the movable shafts 3 and 4 are located farthest from the rotating shafts 19a and 20a. Rotation axis 1 in any direction from
When the rotating shafts 9a and 20a rotate, the movable shafts 3 and 4 gradually move closer to the rotating shafts 19a and 20a while the lever shafts 17a and 20a rotate.
It moves in the direction opposite to the moving direction of 18a.
That is, the blade drive mechanism controls the movable shafts 3 and 4
In the vicinity of the air outlet 5, the horizontal flap 2 is freely moved in a direction substantially perpendicular to the length direction, that is, vertically and horizontally.
Thus, the function of rotating the horizontal flap 2 about a fixed rotation center and the function of moving the horizontal flap 2 without changing the angle of the horizontal flap 2 can be exerted separately or as a unit. You can.

Next, the operation of the horizontal flap 2 in the air conditioner will be described with reference to FIG. In the figure, A, B, and C show the state of the horizontal flap 2 at the time of full closing, horizontal blowing, and downward blowing, respectively. The broken line in the figure indicates the trajectory of the first movable shaft 3 in the operation from the fully closed A to the horizontal blow B through the downward blow C, and the chain line indicates the trajectory of the second movable shaft 4 in the same operation. . In other words, although not shown in the drawing, the movable shafts 3, 4, the fixed pins 15, 16, the lever shafts 17a, 18a, and the rotating shafts 19a, 20a are arranged so as to be substantially aligned at the time of downward blowing C. And the first stepping motor 1
9 and the second stepping motor 20 are driven to rotate in opposite directions. First, when heading from fully closed A to downward blowing C, both stepping motors 19 and 20 are driven to move the first movable shaft 3 diagonally forward and downward, and
The second movable shaft 4 is moved to the same obliquely forward and downward direction by a smaller amount than the movement amount of the first movable shaft 3. Then horizontal flap 2
The horizontal flap 2 rotates so as to move the front edge 2b forward with the vicinity of the rear edge 2a as the center of rotation. At this time, as shown in the figure, the trailing edge 2a remains near the upper edge 5a of the air outlet 5, so that the diffuser length can be made sufficiently long at the time of downward blowing C, whereby the blowing efficiency is improved. Can be improved. As the blowing efficiency is improved, noise can be reduced and the distribution of airflow can be improved. Next, when going from the downward blowing C to the horizontal blowing B, the first movable shaft 3 is moved obliquely rearward and upward, and the second movable shaft 4 is moved substantially horizontally backward. Then, the horizontal flap 2 becomes substantially horizontal, and the rear side thereof is located inside the outlet 5. Therefore, even if the cooling operation is performed by such horizontal blowing, the portion of the horizontal flap 2 where the temperature falls due to the collision with the cool air is arranged so as to be surrounded by the conditioned air, so that the occurrence of dew condensation can be prevented. it can. Moreover, since the rear edge 2a of the horizontal flap 2 is merely drawn substantially inward into the air outlet 5, there is no need to secure a space above the horizontal flap 2. Therefore, in the fully closed state A, the rear edge 2a of the horizontal flap 2 is located near the upper edge 5a of the outlet 5 and the front edge 2b of the horizontal flap 2 is located at the outlet 5
Can be disposed in the vicinity of the lower edge 5b, and it is possible to close the air outlet 5 while avoiding the occurrence of a gap that impairs the design. Further, since the movable shafts 3 and 4 support the movable flaps at the rear side of the horizontal flap 2, as is apparent from FIG. 1, for example, the movable shafts 3 and 4 are compared with the moving distance of the front edge 2 b of the horizontal flap 2. Therefore, the moving distance of the blade 4 becomes small, so that the blade driving mechanism can be made simple and compact.

Although the specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be variously modified and implemented within the scope of the present invention . Transmitted to the movable shaft 3, 4 the rotation of the stepping motor above SL by lever member and the link mechanism, which vertically and is adapted to move back and forth, which in translating the rotational motion, such as a rack-pinion The movable shafts 3 and 4 may be moved up and down and back and forth by combining two converting mechanisms. If the rigidity of the horizontal flap 2 is sufficient, the blade drive mechanism may be provided only on one side.

[0018]

According to the air conditioner of the first aspect of the present invention, the rear side of the horizontal guide blades is positioned inside the air outlet to perform the horizontal air blow. Therefore, the air conditioner is mainly used in the cooling operation performed in this state. It is possible to prevent dew condensation on the horizontal guide blades.Moreover, since the downward blowing is performed with the rear edge of the horizontal guide blades positioned near the upper edge of the air outlet, the diffuser length is sufficient and the blowing efficiency is improved. It is possible to do. Horizontal guidance near the upper and lower edges of the outlet
Since there is no need to provide space for rotating the blades,
Inner blades improve appearance when the outlet is closed
It is possible to make it.

In the air conditioner of the second aspect , since the movable shaft is provided on the rear side of the horizontal guide blade, the movable range can be reduced, and the configuration can be simplified and compact.

[Brief description of the drawings]

FIG. 1 is a partially enlarged sectional view of an air conditioner according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a blade drive mechanism.

FIG. 3 is a schematic structural diagram for explaining the operation of the blade drive mechanism.

FIG. 4 is a partially enlarged sectional view of a conventional air conditioner.

[Explanation of symbols]

 2 Horizontal flap 2a Rear edge 2b Front edge 3 First movable shaft 4 Second movable shaft 5 Air outlet 5a Upper edge 5b Lower edge

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 1/00 401 F24F 13/06 F24F 13/14

Claims (2)

(57) [Claims] An air conditioner having a horizontal guide blade (2) for adjusting the blowing direction of conditioned air at an outlet (5) includes a blade drive mechanism for driving the horizontal guide blade (2).
This blade drive mechanism moves the horizontal guide blade (2) forward.
Two movable shafts (3) and (4) arranged side by side in the rear direction
Each of which is rotatably supported, and the two movable shafts described above.
(3) and (4) in the longitudinal direction of the horizontal guide blade (2), respectively.
Is configured to be moved in a plane substantially perpendicular to
With this arrangement, when the conditioned air is blown forward, horizontal trailing edge (2a) of the horizontal guide vanes (2) is positioned inside the outlet (5), while downward blowing is performed. trailing edge of the horizontal guide vanes (2) and (2a) is positioned in the upper edge (5a) near the outlet (5) for, also the water
The front edge (2b) of the flat guide vane (2) is the lower edge of the outlet (5).
(5b) Positioning in the vicinity and the horizontal guide blade
(2) The trailing edge (2a) is near the upper edge (5a) of the outlet (5).
It is located next to the air outlet with the horizontal guide vanes (2).
An air conditioner characterized by closing (5) . 2. The two movable shafts (3) and (4) are provided on the rear side of the horizontal guide blade (2), and when the air blows downward, each of the movable shafts (3) and (4) is located forward of the horizontal blow blade. The air conditioner according to claim 1 , wherein