JP3302885B2 - 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 having an indoor heat exchanger formed in an inverted V-shape from a front heat exchanger and a rear heat exchanger inside an indoor unit main body.

[0002]

2. Description of the Related Art Conventionally, air containing an indoor heat exchanger formed in an inverted V-shape from a front heat exchanger and a rear heat exchanger is housed inside a main body having suction ports on a front surface and an upper surface, respectively. Harmonizers are known. In this type of air conditioner, a drain pan for collecting drain water generated from each heat exchanger is provided below each of the front heat exchanger and the rear heat exchanger. To reduce the vertical dimension, a blower fan is disposed between the front heat exchanger and the rear heat exchanger so as to be covered by these heat exchangers.

[0003]

However, when the size is reduced in this manner, the air to be exchanged passes through the rear heat exchanger because the blower fan is disposed close to the rear heat exchanger. Wind speed increases. For this reason, when the drain water generated in the rear heat exchanger flows to the blower fan side and the amount of drain water generated is large, such as at the start of cooling, the drain water is provided in the drain pan provided in the lower part of the rear heat exchanger. It is conceivable that the water drops to the blower fan side from the middle of the rear heat exchanger without flowing down to the air-conditioning room.

[0004] Therefore, an object of the present invention is to provide an air conditioner that can reliably prevent the drain water from dripping from the middle of the rear heat exchanger to the blower fan side.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a front heat exchanger having a front heat exchanger opposed to each of the above-mentioned suction ports. An indoor heat exchanger formed in an inverted V-shape with the rear heat exchanger is accommodated, and a blower fan is provided between the front heat exchanger and the rear heat exchanger so as to be covered with the heat exchanger. And an air conditioner in which drain pans are arranged at the lower part of the front heat exchanger and the lower part of the rear heat exchanger, respectively, between the rear heat exchanger and the blower fan, In order to decelerate the airflow passing through the heat exchanger and collect the drain water dripping from the rear heat exchanger and guide it to the drain pan below, it is located on the leeward side of the rear heat exchanger and is approximately from the middle to the lower side. shields the portions, de thereunder of the rear heat exchanger
Wrap inside the pan and inside the drain pan
And a shielding plate configured so as to form a gap therebetween.

According to the above configuration, the heat exchange air flowing from the suction port on the upper surface of the main body to the blower fan through the rear heat exchanger is partially blocked by the shielding plate. Specifically, the shielding plate is located on the leeward side of the rear heat exchanger between the rear heat exchanger and the blower fan, and shields the lower part from substantially the middle , and the lower part of the rear heat exchanger is La on the inside of the drain pan
And a gap is formed between the inside of the drain pan and
Since it is configured to be, it would be located in the highest wind speed portion of the side heat exchanger after being close to the blower fan. Therefore, the wind speed in this part, which had to be high in the past, was reduced by the shield plate, and the drain water generated in the rear heat exchanger passed through the rear heat exchanger as in the past.
Drops on the vertical fan side depending on the wind speed
It will not flow down and will surely flow down to the drain pan side. In addition, the drain water generated in the rear heat exchanger disposed in an inclined state due to the inverted V-shape flows from the upper part to the drain heat generated in the rear heat exchanger, and the lower part is below the drain water from the middle part.
While dropping into is likely to occur, even if dropped, this
The dripped drain is received by the shield plate by the shield plate.
Stopped and passed down the shield plate to the drain pan of the rear heat exchanger
Because it can be guided, do not drop it on the blower fan side.
No. That is, according to the shielding plate, the drain water which is generated in the rear heat exchanger arranged in the inclined state and which is easily dropped in the vertical direction by the airflow passing through the rear heat exchanger is sent.
By preventing the dripping itself on the wind fan side and temporarily guiding the dripping , it is possible to reliably lead to the drain pan.

[0007]

Further, a gap is formed between the inner bottom and the drain pan of the shielding plate, the heat exchange air passing through the lower end of the rear side heat exchanger, a blower fan side through the gap Since the air flows, the flow of the wind is not completely stopped by the shielding plate, and the deterioration of the air blowing characteristics can be avoided.
Furthermore, it is conceivable that the shielding plate is cooled by the rear heat exchanger and drain water is generated on the surface of the shielding plate on the side of the blower fan, but the drain water flows between the lower part of the shielding plate and the inside of the drain pan. Since the above-mentioned gap is formed, the liquid is guided to the drain pan and collected.

[0009]

Further, a flat plate parallel to the rear heat exchanger is formed.
To form a lower part and open above the rear heat exchanger
The upper part forming the slope and the convex shape toward the blower fan side
By configuring the formed middle part along the longitudinal direction,
The wind fan arranged so as to be covered by the front heat exchanger and the rear heat exchanger may also serve as the winding start. In this case, the wind of the blowing fan moves to the suction side by the shielding plate, and the air blows out. The range of the side expands. By expanding the range of the outlet side in this way, the wind pressure on the inlet side and the outlet side is more balanced, and the surging phenomenon (reversal phenomenon between the inlet side and the outlet side), which has conventionally occurred, is eliminated, and the blowing characteristics are improved. And the blowing noise is also reduced. In addition, the strength of the shield plate is improved by the convex shape formed at the substantially middle portion of the shield plate along the longitudinal direction, so that the mounting strength between the heat exchanger and the shield plate is improved.

[0011] Further, in the heat exchange fins of the rear heat exchanger portion where the shielding plate does not face, a slit cut and raised in the longitudinal direction.
May be formed. In this way, the drain water generated in the portion of the rear heat exchanger where the shield plate does not face is captured by the slit and guided along the slit to the portion where the lower shield plate is located. Therefore, it is possible to prevent the drain water from dropping to the blower fan side from the part of the rear heat exchanger where the shielding plate does not face.

[0012]

Further, the shielding plate has a longitudinal side on one side thereof.
The rear heat exchanger provided at a predetermined interval along the direction
Having an engaging claw that engages with the refrigerant pipe of
Attachment pieces to be attached and formed at both ends in the longitudinal direction
And the end plate of the rear heat exchanger and the feeder on which the end plate is placed.
Fixed to be sandwiched between the wind fan bearing base
Forming a fixed piece, and attaching the mounting piece to the refrigerant pipe of the rear heat exchanger.
The fixing piece may be engaged with the end plate of the rear heat exchanger and the bearing base of the blower fan. In this case, the shielding plate can be securely fixed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side sectional view showing an indoor unit main body 1 of an air conditioner. As shown in FIG.
It comprises a rear plate body 2 forming a back part, a front panel 3 forming an upper part, and a suction grill 4 forming a front part. An upper suction port 5 is formed in the front panel 3, and a front suction port 6 is formed in the suction grill 4.
Inside the indoor unit main body 1, an indoor heat exchanger 7 formed in an inverted V-shape is accommodated. This indoor heat exchanger 7
Has a front heat exchanger 8 facing the front suction port 4 and a rear heat exchanger 9 facing the upper suction port 5, and the upper portions of the front heat exchanger 8 and the rear heat exchanger 9 They are connected at a predetermined angle to form an inverted V-shape. The rear heat exchanger 9
Auxiliary heat exchanger 10 is arranged above. Each of the heat exchangers 8, 9, and 10 includes heat exchange fins 11 arranged at predetermined intervals and a refrigerant pipe 12 penetrating the fins 11.

Drain pans 13 and 14 are arranged below the front heat exchanger 8 and the rear heat exchanger 9, respectively, and are disposed between the front heat exchanger 8 and the rear heat exchanger 9. Is
The blower fan 1 is covered by these heat exchangers 8 and 9.
5 are arranged. According to this configuration, the blower fan 1
5 drives the room air from the front suction port 6 and the upper suction port 5, passes through the front heat exchanger 8 and the rear heat exchanger 9, passes through the ventilation passage 16, and enters the room from the outlet 17. Drain water generated at each of the heat exchangers 8 and 9 at that time is collected in drain pans 13 and 14, respectively. The outlet 17 is provided with upper and lower louvers 18 and left and right louvers 19.

A feature of the present embodiment is that the rearward side of the rear side heat exchanger 9 is provided between the rear side heat exchanger 9 and the blower fan 15 (the rear side heat exchanger 9 is connected to the blower fan 15). (Close part) and the shielding plate 20 is disposed. As shown in FIG. 4, the shielding plate 20 has substantially the same length as the horizontal length of the rear heat exchanger 9, and is disposed so as to shield the lower side from substantially the middle of the rear heat exchanger 9. ing. The shielding plate 20 has a substantially middle portion 21 formed in a convex shape along the longitudinal direction, thereby increasing the strength of the shielding plate 20 itself and increasing the mounting strength.

As shown in FIGS. 2 and 3, the shield plate 20 is attached to the rear heat exchanger 9 by an attachment piece 22 provided on one side surface thereof. As shown in FIG. 4, the mounting pieces 22 are provided at predetermined intervals along the longitudinal direction of the shielding plate 20, and have an engagement claw 23 that engages with the refrigerant pipe 11 of the rear heat exchanger 9. are doing. The engaging claw 23 has an arc portion 24 into which the refrigerant pipe 11 fits, and the pair engages the refrigerant pipe 11 inside or outside.

At both ends in the longitudinal direction of the shielding plate 20, FIG.
The fixing pieces 25 are formed as shown in FIG.
Are sandwiched between an end plate (not shown) of the rear heat exchanger 9 and a bearing base (not shown) of the blower fan 15 on which the end plate is mounted. By the fixing by the fixing piece 25 and the mounting by the mounting piece 22, the shielding plate 20 can be securely fixed in consideration of the fact that the mounting piece 22 is detached from the refrigerant pipe 11 due to vibration or the like.

As shown in FIGS. 2 and 3, the shielding plate 20 has a flat plate portion 20a formed parallel to the rear heat exchanger 9 at a lower portion thereof, and a flat plate portion 20a formed at an upper portion thereof. It has a slope 20b that opens upward. The oblique portion 20b is disposed so as to shield the lower side from substantially the middle of the rear heat exchanger 9,
Drain water dropped from the rear heat exchanger 9 is collected. The flat plate portion 20a is arranged so as to wrap inside the drain pan 14 of the rear heat exchanger 9, and guides the drain water collected at the inclined portion 20b to the drain pan 14.

A predetermined gap 26 is formed between the flat plate portion 20a and the inside of the drain pan 14, as shown in FIG. A heat insulating material 28 is provided between the rear heat exchanger 9 and the rear plate 27. The heat insulating material 28 is intermittently arranged along the horizontal direction of the rear heat exchanger 9 so that air does not flow between the lower end of the rear heat exchanger 9 and the rear plate 27. . According to this configuration, the rear plate 27
The air flowing to the side surely flows into the rear heat exchanger 9, where heat is exchanged, and then passes through the gap 26 between the flat plate portion 20 a of the shielding plate 20 and the inside of the drain pan 14.
Flows to side 5.

The shielding plate 20 also serves as a start of winding of the blower fan 15 as shown in FIG. That is,
Due to the convex shape formed in the substantially intermediate portion 21 of the shielding plate 20, the portion closest to the blower fan 15, that is, the area of the blowout side 29 of the blower fan 15 is shifted by the angle θ to the suction side 30.
Has spread. Further, as shown in FIG. 2, a slit 31 is formed in the heat exchange fin 12 of the portion 9a of the rear heat exchanger 9 where the shielding plate 20 does not face. The slit 31 is formed by cutting and raising a part of the heat exchange fin 12 in the longitudinal direction. In FIG. 2, the slit 31 is also provided in the portion 9 b of the rear heat exchanger 9 facing the shielding plate 20, but this may not be provided.

The operation of the present embodiment having the above configuration will be described.

From the suction port 5 on the upper surface of the main body 1 to the rear heat exchanger 9
Heat exchange air flowing to the blower fan 15 through the
A part thereof is obstructed by the shielding plate 20 and decelerated.
More specifically, since the shielding plate 20 is arranged on the leeward side of the rear heat exchanger 9, the shielding plate 20 is arranged at the highest wind speed portion of the rear heat exchanger 9 close to the blower fan 15. Become. Therefore, the wind speed in this portion where the wind speed had to be high in the past is reduced by the shielding plate 20, and the drain water generated in the rear heat exchanger 9 is sent to the blower fan 15 side as in the conventional case. It does not flow, but flows down to the drain pan 14 side soundly.

The flat plate portion 20 below the shielding plate 20
Since a is wrapped inside the drain pan 14 of the rear heat exchanger 9, even if the drain water generated in the rear heat exchanger 9 drops to the blower fan 15, the dropped drain water is The rear heat exchanger 9 and the drain pan 1 are received by the oblique portion 20b of the shielding plate 20 and travel down the flat plate portion 20a.
It is led to 4.

The flat plate portion 20 below the shielding plate 20
a and the inside of the drain pan 14, the air passing through the rear plate 27 of the rear heat exchanger 9 flows between the flat plate portion 20 a of the shielding plate 20 and the drain pan 14. The air flows to the blower fan 15 through the gap 26. As described above, since the flow of the wind is not completely stopped by the shielding plate 20, it is possible to avoid a decrease in the blowing characteristics.

Further, the shielding plate 20 is provided by the rear heat exchanger 9.
Is cooled and drain water is considered to be generated on the surface of the shielding plate 20 on the side of the blower fan 15, but the drain water is
Since the gap 26 is formed between the flat plate portion 20 a below the shielding plate 20 and the inside of the drain pan 14, it is guided along the surface of the shielding plate 20 to the drain pan 14 and collected.

The reason why the shielding plate 20 is arranged so as to shield the lower side from a substantially middle portion of the rear heat exchanger 9 is that the entire rear heat exchanger 9 is shielded by the shielding plate 20 because of the ventilation. It is meaningless, and on the other hand, as a place where the drain water is dropped, the drain water is dropped from an intermediate portion where the water flows from above and the drain water is increased to some extent. Therefore, the shielding plate 20 is provided below substantially the middle of the rear heat exchanger 9.

Further, the installation of the shielding plate 20 moves the start of winding of the blower fan 15 to the suction side 30 by the angle θ, and widens the range of the blowing side 29. Thus, the outlet side 29
Of the suction side 30 and the discharge side 29
And the wind pressure is more balanced, the surging phenomenon (reverse rotation phenomenon between the suction side 30 and the blowing side 29) which has occurred conventionally is eliminated, and the blowing characteristics are improved and the blowing sound is reduced.

Further, a slit 31 is formed in the heat exchange fin 12 of the portion 9a of the rear heat exchanger 9 where the shielding plate 20 does not face.
Since the cut-and-raised portion is formed, the drain water generated in the portion 9 a of the rear heat exchanger 9 where the shielding plate 20 does not face is caught by the slit 31 and is located along the lower side along the slit 31. It is guided to a certain portion 9 b of the shielding plate 20 and drops on the shielding plate 20. Therefore, drain water is supplied from the fan 9 to the portion 9a of the rear heat exchanger 9 where the shielding plate 20 does not face.
Dropping on the side is prevented.

[0031]

As described above, according to the air conditioner of the present invention, it is possible to reliably prevent the drain water from dropping from the middle of the rear heat exchanger to the blower fan.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an air conditioner showing an embodiment of the present invention.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a perspective view of a shielding plate.

4A and 4B are explanatory diagrams of a shielding plate, wherein FIG. 4A is a front view and FIG. 4B is a plan view.

FIG. 5 is a diagram showing a state in which the blow-out side of a blower fan is expanded by installing a shielding plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 5 Suction port 6 Suction port 7 Indoor heat exchanger 8 Front heat exchanger 9 Rear heat exchanger 13 Drain pan 14 Drain pan 15 Ventilation fan 20 Shielding plate 20a Flat plate part as a lower part of shielding plate 21 Intermediate part 25 Fixed piece 26 Gap 31 slit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-8-14596 (JP, A) Japanese Utility Model Showa 57-16712 (JP, U) Japanese Utility Model Utility Model Showa 57-66422 (JP, U) (58) Field (Int. Cl. ⁷ , DB name) F24F 1/00 361

Claims (4)

(57) [Claims] An inlet is formed in each of a front surface and an upper surface of a main body, and a front heat exchanger and a rear heat exchanger opposed to each of the suction holes are formed in the main body in an inverted V-shape. A blower fan is arranged between the front heat exchanger and the rear heat exchanger so as to be covered by the heat exchanger, and the lower part and the rear side of the front heat exchanger are housed between the indoor heat exchanger and the front heat exchanger. In an air conditioner in which a drain pan is arranged at a lower portion of a heat exchanger, between the rear heat exchanger and the blower fan, an air flow passing through the rear heat exchanger is decelerated and a rear heat exchanger is provided. and collecting the drain water dripping from to guide the drain pan below, by positioning on the leeward side of the rear heat exchanger downwardly from a substantially intermediate
And the lower part is the drain pan of the rear heat exchanger.
Wrap inward and leave a gap between the inside of the drain pan
An air conditioner comprising a shielding plate configured to form a gap. 2. The shielding plate is parallel to the rear heat exchanger.
Above the lower heat exchanger and the lower heat exchanger.
An upper part that forms a slope to open, and a convex to the blower fan side
And an intermediate part formed in a shape along the longitudinal direction.
By doing so, it also serves as the start of winding of the blower fan arranged so as to be covered by the front heat exchanger and the rear heat exchanger
The air conditioner according to claim 1, wherein: 3. The air conditioner according to claim 1 , wherein the heat exchange fins in the portion of the rear heat exchanger where the shielding plate does not face are formed with slits cut and raised in the longitudinal direction . 4. The shielding plate has a longitudinal direction on one side surface thereof.
Are provided at predetermined intervals along the rear heat exchanger.
It has an engaging claw that engages with the medium pipe and is attached to the above rear heat exchanger
Mounting pieces that are attached to the
The end plate of the rear heat exchanger and the ventilation fan on which the end plate is placed
And a fixing piece configured to be sandwiched between the bearing base of the
The air conditioner according to claim 1 , wherein the air conditioner is formed.