JPH10332191A - Air conditioner - Google Patents

Abstract

(57) [Problem] To provide an air conditioner capable of increasing the amount of air blown downward during a heating operation. SOLUTION: A first flap 21 which is rotatably supported at both ends in the longitudinal direction of an air outlet 5 and changes the direction of cool air or hot air blown out from the air outlet 5,
A second flap 22 is provided which rotates in conjunction with the flap 21 and is disposed parallel to the front side of the first flap 21 when the air conditioner is stopped, and the first flap 21 rotates to a substantially vertical position during a heating operation. The second flap 22 is formed so as to be close to the upper wall 6c of the ventilation path 7 when moved, and the second flap 22 allows the warm air to flow to the upper end side when rotated to a substantially vertical position during the heating operation. Ventilation hole 22e and ventilation hole 2
Above 2e, a baffle 22d for guiding the warm air to the ventilation hole 22e was formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner, and more particularly to an improvement in a flap for changing the direction of cold air or hot air blown from an air outlet in a vertical direction.

[0002]

2. Description of the Related Art In a conventional air conditioner, for example, an indoor unit of a separation type air conditioner comprising an indoor unit and an outdoor unit, indoor air sucked from an air inlet by a fan is passed through a heat exchanger. After cooling or heating, the air is blown into the room from the same air outlet.

FIGS. 5 and 6 are side sectional views of an indoor unit of such a separation type air conditioner. The indoor unit 1 is provided with air inlets 3 and 4 on the front and upper parts of the main body case 2,
An air outlet 5 that opens diagonally downward is provided on the lower side. In addition, the inner walls 6a, 6
On the inlet side of the ventilation path 7 formed by b, a cross-flow fan 8 of a once-through type is arranged. A heat exchanger 9 is disposed between the air inlets 3 and 4 and the cross flow fan 8, and cools the air sucked by the fan 8 during the cooling operation and heats the sucked air during the heating operation. It is supposed to.

A plurality of wind direction change plates 10 for changing the left and right blowing angles of the blown air are provided at the back of the air outlet 5 so as to be rotatable in the left and right direction. ing. Further, on the downstream side of the wind direction changing plate 10,
That is, on the outlet side of the air outlet 5, the first flap 11 and the second flap 12, which are rotatably supported at both ends in the longitudinal direction of the air outlet 5 and rotate in conjunction therewith, are provided. . The first and second flaps 11 and 12 are provided with mounting ribs
1a, 12a are formed, and the bearing holes 11b, 12b of the mounting ribs are mounted on a rotating shaft, and are configured to rotate in conjunction with each other.

Here, the first flap 11 and the second flap 11
In the cooling operation, the front end side of the flap 12 is turned upward to blow out the cool air forward, so that the flap 12 is oriented substantially horizontally. In the heating operation, the flap 12 blows out the warm air downward.
As shown in (1), the front end side of the flap is turned downward so that it is oriented substantially vertically. When the apparatus is stopped, the first flaps 11 and the second flaps 12 are pivoted further upward than the horizontal position so that the air outlet 5 is not conspicuous, and the two flaps 11, 12 The outlet 5 is closed.

[0006]

By the way, in such a conventional air conditioner, during the heating operation, each flap 11, 12 is turned to a substantially vertical position as shown in FIG. When the air is blown out in the direction, the rear side of the second flap 12 acts as a resistance to the air discharged obliquely downward from the fan 8 toward the air outlet 5, thereby preventing an increase in the amount of air blown downward.

When the mounting ribs 11a, 12a are formed on the flaps 11, 12, two flaps 1
In order to prevent the rear end of the first flap 11 from interfering with the mounting rib 12a of the second flap 12 when the first and flaps 12 rotate in conjunction with each other, the depth of the first flap 11 cannot be extended too much rearward. For this reason, even if it rotates to the vertical position, a gap is inevitably formed between the rear end of the first flap 11 and the upper wall 6c of the air outlet passage 7, and hot air leaks forward from this gap. So, while heating efficiency decreases,
Together with the ventilation resistance on the rear side of the second flap 11,
There was a problem that the amount of air blown downward between the flaps 11 and 12 was reduced.

When the apparatus is stopped, two flaps 1
Although the air outlet 5 is closed at 1 and 12, the indoor unit 1 is installed at the upper part of the wall of the room, so that the air outlet 5 is easy for the user to see and if the two flaps 11 and 12 can be seen as they are. It didn't look so good.

Further, if the length of the flap overhang is increased in order to increase the amount of air blown downward, the flap is generally formed in a streamlined shape. Therefore, a flap motor having a large driving torque and a large static torque is required.

Accordingly, the present invention has been made to solve such a problem, and an object of the present invention is to provide an air conditioner capable of increasing the amount of air blown downward during a heating operation. It is.

In addition, even when the mounting rib is formed on the flap, the rear end of the first flap and the mounting rib of the second flap do not interfere with each other, and the depth of the first flap can be adjusted above the air outlet passage. It is an object of the present invention to provide an air conditioner that can be long enough to approach a wall.

It is another object of the present invention to improve the appearance when closing the air outlet with a flap when the apparatus is stopped.

Still another object of the present invention is to increase the amount of air blown downward during the heating operation without increasing the driving torque or the stationary torque of the flap motor.

[0014]

SUMMARY OF THE INVENTION To achieve the above object, the present invention blows out cold air cooled by a heat exchanger during a cooling operation, and discharges hot air heated by the heat exchanger during a heating operation. A first flap having an air outlet for blowing air, rotatably supported at both ends in the longitudinal direction of the air outlet, and changing a direction of cold air or hot air blown from the air outlet; A second flap that rotates in conjunction with the first flap and that is disposed parallel to the front side of the first flap when the air conditioner is stopped, wherein the first flap is rotated to a substantially vertical position during a heating operation; The second flap is formed to have a depth length close to the upper wall of the ventilation path when the air is passed, and the second flap has a ventilation hole through which warm air can flow to the upper end side when rotated to a substantially vertical position during the heating operation, ventilation Is characterized in that the upper side hot air to form a air guide portion for guiding to the ventilation holes.

Further, the first flap is characterized in that a portion corresponding to a mounting rib of the second flap is cut off when the first flap rotates.

Further, each of the lengths is formed so that the first flap is completely covered by the second flap in a state where the air outlet is closed by the flap.

Further, the second flap is formed so that the streamlined leeward lower surface and the leeward upper surface are concave, and the whole is made thin.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are side sectional views showing an indoor unit of a separation type air conditioner as an embodiment of the air conditioner according to the present invention. In each figure, the same reference numerals as those in FIGS. 5 and 6 indicate the same or corresponding parts.

The indoor unit 1 of this embodiment is provided with air inlets 3 and 4 on the front and upper portions of the main body case 2 and the air opening obliquely downward on the lower side, similarly to the above-mentioned prior art. An outlet 5 is provided. In addition, this air outlet 5
A ventilation path 7 is formed by the inner walls 6a and 6b toward the air passage. A cross-flow fan 8 of a once-through type is arranged on the inlet side of the ventilation path 7. And the above air inlets 3, 4
A heat exchanger 9 is disposed between the heat exchanger 9 and the cross flow fan 8 so as to cool the air sucked by the fan 8 during the cooling operation and to heat the air sucked by the fan 8 during the heating operation. .

A plurality of wind direction change plates 10 for changing the left and right blowing angles of the blown air are provided at the back side of the air outlet 5 so as to be rotatable in conjunction with the left and right directions. Have been.

The outlet side of the air outlet 5 downstream of the wind direction change plate 10 has a first end unique to this embodiment which is rotatably supported at both ends in the longitudinal direction of the air outlet 5. A flap 21 and a second flap 22 are provided. The first flap 21 and the second flap 22 have a structure shown in FIG.
As shown in FIG. 4, mounting ribs 21a and 22a are formed at predetermined positions between the left and right ends and the middle thereof, and bearing holes 21b and 22b of the mounting ribs 21a and 22a are connected to a rotating shaft (not shown). It is configured to be attached and rotate in conjunction with it. A reinforcing rib 22c is formed at an intermediate position between the mounting ribs 22a of the second flap 22. The first flap 21 and the second flap 22
Is rotated, for example, in the bearing hole 2 on one end side of the second flap 22.
A rotation shaft connected to a flap motor (stepping motor) via a gear or the like is inserted into 2b, and the first flap 21 is interlocked with the rotation of the second flap 22 due to this.

Here, the first flap 21 of the present embodiment is used.
As shown in FIG. 3, is formed in a streamlined shape that is symmetrical with respect to the bearing hole 21b that is the center of rotation.
That is, the front side (downwind side) of the bearing hole 21b is shorter than the conventional one shown in FIGS. 5 and 6, and the rear side (upwind side) reaches a substantially vertical position during the heating operation as shown in FIG. It is formed to have a depth that is close to the upper wall 6c of the air outlet ventilation path 7 when it is rotated. This makes it possible to eliminate the horizontal airflow during the heating operation.

At the rear side of the first flap 21 having the above-described depth, mounting ribs 22a, 22a formed at two places between both ends of the second flap 22 are provided.
(At substantially the same position as the mounting ribs 21a, 21a between both ends of the first flap 21),
21c is formed. These notches 21c, 21c
When rotating between the substantially vertical position (during heating operation) in FIG. 1 and the outlet closing position (during stop) in FIG.
1 is the mounting rib 22 of the second flap 22
It is formed to a depth that does not interfere with a. Therefore,
The first flap 21 can be extended to a depth close to the upper wall 6c of the air outlet passage 7 without any interference between the first flap 21 and the second flap 22 during rotation.

On the other hand, the second flap 22 of the present embodiment
The front side (leeward side) of the bearing hole 22b, which is the center of rotation, is formed considerably longer than the conventional one shown in FIGS. In other words, the protruding length from the air outlet 5 becomes longer when it is rotated to a substantially vertical position during the heating operation (FIG. 1), and the flaps 21 and 22 when stopped (FIG. 2).
When the air outlet 5 is closed with the second flap 22, the second flap 22 is arranged in parallel with the front side of the first flap so as to completely cover the first flap 21. At this time, the notch 21c formed on the rear side of the first flap 21 also becomes invisible from the outside.

The second flap 22 is divided on the rear side (windward side) of the bearing hole 22b so that the bearing hole 2b is formed.
It has a stepped air guide 22d shifted to the 2b side,
The air guide 22d is formed in a gentle arc shape.
Accordingly, when the second flap 22 is rotated to a substantially vertical position during the heating operation (see FIG. 1), the air flows from the fan 8 to the ventilation path 7 between the air guide portion 22d and the second flap 22 main body. A ventilation hole 22e through which air discharged obliquely downward along the flap main body front surface from the rear surface of the second flap 22 (the rear surface of the baffle 22d) is formed. Thereby, the ventilation resistance on the rear side of the second flap 22 is reduced, and the first flap 21
And the airflow passing between the second flaps 22 increases, and the airflow of the lower blowout during the heating operation increases.

Further, the second flap 22 is formed in a streamlined shape so that the windward lower surface 22f and the leeward upper surface 22g are concave surfaces. By forming the second flap 22 in this manner, even if the second flap 22 is formed to be longer as described above, the center portion does not become thicker and the whole becomes almost uniformly thinner, so that the weight can be reduced. ,
The drive torque and the static torque of the flap motor are prevented from increasing. In the heating operation (FIG. 1),
Part of the air passing through the second flap 22 is the windward lower surface 2
2f flows downward along the concave surface, and the air that has passed through the ventilation holes 22e flows downward along the concave surface of the leeward upper surface 22g. Turned to

During the heating operation, the first flap 21 and the second flap 22 are rotated in conjunction with each other until the first flap 21 and the second flap 22 become substantially vertical as shown in FIG. Fan 8 to ventilation path 7
The warm air discharged obliquely downward along is changed in the blowing direction downward by the first flap 21 and the second flap 22 set at the vertical position, and is blown toward the indoor floor surface. The room can be warmed from below.

At this time, since the rear end of the first flap 21 is close to the upper wall 6c of the outlet ventilation passage 7, the warm air discharged to the first flap 21 side is forward (in the horizontal direction).
Flows between the first flap 21 and the second flap 22 without being blown out. The warm air discharged to the second flap 22 side is the windward lower surface 22 f of the second flap 22.
The hot air blown downward along the concave surface formed on the rear surface of the second flap 22 and directed to the rear end side (the air guiding portion 22d) of the second flap 22 is guided to the rear surface of the air guiding portion 22d and is provided with the ventilation hole 22e.
And flows through along the front surface of the flap, so that it flows between the first flap 21 and the second flap 22 without receiving much ventilation resistance. Thus, the first flap 21
The warm air that has flowed between the second flap 22 and the second flap 22 is blown straight down so as to be drawn into the concave surface formed on the leeward upper surface 22g of the second flap 22.

As described above, according to this embodiment, during the heating operation, the amount of air blown downward can be considerably increased due to the synergistic effect described above.

During the cooling operation, the first flap 21
And the second flap 22 are rotated in conjunction with each other until they are substantially horizontal. The cold air discharged obliquely downward from the fan 8 along the ventilation path 7 has its blowing direction changed in the horizontal direction (forward) by the first flap 21 and the second flap 22 set at the horizontal position, and the upper part of the room And the whole room can be cooled. At this time, the second
Even if the flap 22 has the stepped air guiding portion 22d as described above and the ventilation hole 22e is formed, since the cool air discharged from the fan 8 hits the upper surface of the horizontal air guiding portion 22d, the ventilation hole 22e is formed. Is not blown downward, but is blown out in the horizontal direction along the upper surface of the second flap 22 main body formed longer. Therefore, a sufficient horizontal air volume can be ensured even during the cooling operation.

On the other hand, when the apparatus is stopped, the first flap 2
As shown in FIG. 2, the first and second flaps 22 are pivoted further upward on the tip side than the horizontal position during the cooling operation.
The air outlet 5 is closed. In the present embodiment, since the front side of the second flap 22 is formed to be considerably longer for the purpose of increasing the air volume of the lower blowout during the heating operation,
The air outlet 5 can be closed by only one of the second flaps 22, and the first flap 21 is hidden inside, so that the appearance is considerably refreshed. In the present embodiment, the first
A notch 21c is formed on the rear side of the flap 21 to prevent interference during rotation.
It is particularly effective that the first flap 21 with c becomes invisible.

[0033]

As described above, according to the present invention, the cooling air blows out the cold air cooled by the heat exchanger during the cooling operation, and has the air blowing outlet blows out the hot air heated by the heat exchanger during the heating operation. A first flap rotatably supported at both ends in the longitudinal direction of the air outlet and changing the direction of cold or hot air blown out from the air outlet, and rotating in conjunction with the first flap; A second flap disposed parallel to a front side of the first flap when the air conditioner is stopped, wherein the first flap is close to an upper wall of the ventilation passage when the first flap is rotated to a substantially vertical position during a heating operation; The second flap has a ventilation hole through which warm air can flow at the upper end when it is turned to a substantially vertical position during a heating operation, and a warm air ventilation hole above the ventilation hole. Wind guiding section leading to Since the formed, it is possible to increase the balloon airflow downward in the heating operation effectively.

Further, the first flap is moved to the second
By providing a configuration in which a portion corresponding to the mounting rib of the flap is cut out, even when the mounting rib is formed on the flap, the rear end of the first flap and the mounting rib of the second flap do not interfere with each other. It is easy to make the depth of the flap long enough to contact the upper wall of the outlet ventilation passage.

Further, by forming each length such that the second flap completely covers the first flap in a state where the air outlet is closed by the flap, the air outlet is closed by one flap. , The appearance is refreshing. Also,
Even when the notch is formed in the first flap as described above, the notch can be hidden.

Furthermore, the second flap is formed so that the streamlined leeward upper surface and the leeward upper surface are concave, and the whole is made thin, so that even if the second flap is made longer, it becomes thicker. Since the weight can be reduced without increasing the driving torque and the stationary torque of the flap motor, the amount of air blown downward during the heating operation can be increased.

[Brief description of the drawings]

FIG. 1 shows an embodiment of an air conditioner according to the present invention.
Sectional side view which shows the indoor unit of a separation type air conditioner (at the time of heating operation).

FIG. 2 is a side sectional view showing a stop state.

FIG. 3 is a detailed configuration diagram of a first flap of the embodiment,
(A) is a plan view, (b) is a front view, and (c) is a sectional side view of a main part.

FIG. 4 is a detailed configuration diagram of a second flap of the embodiment,
(A) is a plan view, (b) is a front view, and (c) is a sectional side view of a main part.

FIG. 5 is a side sectional view showing an indoor unit of a conventional separation type air conditioner (at the time of a heating operation).

FIG. 6 is a side sectional view showing a stop state in the same manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Indoor unit 3, 4 Air inlet 5 Air outlet 6a, 6b Inner wall 6c Upper wall 7 Ventilation path 8 Cross flow fan 9 Heat exchanger 21 First flap 22 Second flap 21a, 22a Mounting rib 21b, 22b Bearing hole 21c Notch 22d Ventilation section 22e Ventilation hole 22f Upwind lower surface (concave surface) 22g Downwind upper surface (concave surface)

Claims (4)

[Claims] 1. An air outlet for blowing out cold air cooled by a heat exchanger during a cooling operation, and an air outlet for blowing out hot air heated by a heat exchanger during a heating operation, and both ends of the air outlet in the longitudinal direction. A first flap that is rotatably supported on the first flap and changes the direction of cold or hot air blown out from an air outlet; and a first flap that rotates in conjunction with the first flap and stops when the air conditioner is stopped. A second flap disposed in parallel with the front side of the first flap, the first flap is formed to a depth length close to the upper wall of the ventilation path when rotated to a substantially vertical position during the heating operation, The second flap has a ventilation hole through which warm air can flow at an upper end when the second flap is rotated to a substantially vertical position during a heating operation, and a ventilation portion that guides the warm air to the ventilation hole above the ventilation hole. Characterized by Air conditioner. 2. The air conditioner according to claim 1, wherein a portion of the first flap which abuts on a mounting rib of the second flap when the first flap rotates is cut off. 3. The length of each of the first flaps is completely covered by a second flap in a state in which the air outlet is closed by the flaps.
Or the air conditioner according to claim 2. 4. The apparatus according to claim 1, wherein the second flap is formed so that a streamlined windward lower surface and a leeward upper surface are concave, and the whole is thin.
The air conditioner according to any one of the above.