JPH10227470A - Air conditioner indoor unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the shape and structure of a spacer, and prevent the air blowing performance from decreasing. SOLUTION: This air conditioner indoor unit is equipped with a laterally long cross flow fan 5, two heat-exchangers 4A, 4B which are arranged in front of and behind the cross flow fan 5, a stabilizer 7 which extends to the downstream side, on the front side of the cross flow fan 5, a rear guider 8 which extends to the downstream side, on the rear side of the cross flow fan 5, and forms an air outlet 3 together with the stabilizer 7, and an upper air stream guide 6A which is bridged between both ends of the tops of the heat-exchangers 4A, 4B and shuts off the side 14 of air passage, which is a passage for an air stream running to the cross flow fan side by passing above 13 of the heat- exchangers, and of which the cross sectional shape is approx. triangular facing the inside of the air passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an indoor unit of an air conditioner.

[0002]

2. Description of the Related Art In recent air conditioner indoor units, an air passage, which is a passage of an airflow passing through an upper portion of a heat exchanger and passing through the heat exchanger and flowing toward a cross flow fan, is cut off. A plate-like spacer is provided at both ends of the upper part of the two heat exchangers arranged in the shape of a square to block the upper part of the heat exchanger and the inside of the air passage. Hereinafter, the configuration will be described with reference to FIG. In FIG. 10, a horizontally long cross flow fan 5, heat exchangers 4 </ b> A and 4 </ b> B arranged upstream and downstream of the cross flow fan 5, and partially opposed to the front side of the cross flow fan 5. And a stabilizer 7 extending downstream of the cross flow fan 5 and a part thereof facing the rear side of the cross flow fan 5 and extending downstream of the cross flow fan 5 to be connected to the stabilizer 7. A rear guide 8 forming the outlet 3 and a suction grill 2
And the suction port 1 and two C-shaped heat exchangers 4A,
4B, a flat plate-like spacer 6F is provided at both ends of the upper part of the heat exchanger 4B to block the upper portion 13 of the heat exchanger and the inside 14 of the air passage.

[0003]

However, although the above-mentioned flat spacer 6F can prevent the wind that does not pass through the heat exchanger from being sucked into the air passage, it does not have a heat exchanger at the position of the spacer 6F. The dead water area 12 is generated, and the airflow is disturbed, so that the blowing performance is reduced.

An object of the present invention is to solve such a conventional problem, and has an object to improve the shape of a spacer and prevent a decrease in ventilation performance inside a ventilation path.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cross flow fan having a horizontally long shape, a heat exchanger disposed upstream and downstream of the cross flow fan and upstream and downstream of the cross flow fan. It is erected at both ends of the upper part of the exchanger, and is arranged at a position where the upper part of the heat exchanger and the inside of the air passage are shut off. And an upper airflow guide.

Further, the cross section of the portion where the upper airflow guide is located inside the air passage is substantially trapezoidal convex toward the inside of the air passage.

Further, the upper airflow guide is configured so as to be convexly inclined so that the center becomes the vertex toward the longitudinal center of the cross-flow fan.

The upper airflow guide has one or more ribs at a predetermined interval in the horizontal direction.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to solve the above-mentioned problems, according to the present invention, upper airflow guides are provided at both ends of the upper portions of both heat exchangers, and are arranged at positions where an upper portion of the heat exchangers and an inside of an air passage are cut off. The cross-sectional shape of a portion located inside the air passage is a substantially triangular shape that is convex toward the inside of the air passage.

Further, the upper airflow guide has a substantially trapezoidal shape in which a cross section of a portion located inside the air passage is convex toward the inside of the air passage.

Further, the upper airflow guide is formed so as to be convexly inclined such that the center becomes a vertex toward the longitudinal center of the cross-flow fan.

Further, the upper airflow guide has a structure in which one or more ribs are integrally formed at predetermined intervals in the horizontal direction.

By adopting the shape or configuration of the upper airflow guide as described above, the airflow flowing from the suction port of the air conditioner indoor unit passes through the heat exchanger,
The air flows smoothly along the convex upper airflow guide inside the air conditioner indoor unit. Therefore, the dead water area described in the related art does not occur, and it is possible to prevent a decrease in the blowing performance.

[0014]

【Example】

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to FIG.

FIG. 1 shows a horizontally long cross flow fan 5,
Two heat exchangers 4A and 4B arranged in a C-shape before and after the cross flow fan 5 on the upstream side of the cross flow fan 5 are partially opposed to the front side of the cross flow fan 5, A stabilizer 7 extending downstream of the flow fan 5 and a part thereof are opposed to a rear side of the cross flow fan 5 and extended downstream of the cross flow fan 5 to form the outlet 3 with the stabilizer 7. The rear guide 8 to be formed, the suction grill 2, the suction port 1, and the upper and lower ends of the heat exchangers 4 </ b> A and 4 </ b> B are bridged, and pass through the upper part 13 of the heat exchanger and the heat exchanger to the cross flow fan side. It is sectional drawing of the air conditioner indoor unit which has 6 A of upper airflow guides which block the inside 14 of the ventilation path which is a flow path of the flowing airflow. In FIG. 1, the cross-sectional shape of the upper airflow guide 6A is substantially triangular toward the inside of the air passage to reduce the turbulence of the air flow inside the air passage. FIG. 2 shows a perspective view of the upper airflow guide 6A. The convex height of the upper airflow guide 6A may be a height that generates a smooth airflow, and protrudes downward to a height of about the upper end inside the air passage of the heat exchanger.

In the present embodiment, the above-described configuration makes it possible to smooth the airflow near the upper airflow guide 6A, eliminate the dead water area described in the prior art, and prevent an increase in noise value.

According to the experiment, as shown in Table 1, 42d
B when the blowing sound is kept, when compared with the case of the conventional spacer 6F (the conventional technology is set to 0),
An increase in air volume of 2 cubic meters / minute is seen.

[0018]

[Table 1]

(Embodiment 2) Next, Embodiment 2 of the present invention will be described with reference to FIG. Portions having the same configuration as in the first embodiment and performing the same function are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

FIG. 3 shows a cross flow fan 5, heat exchangers 4A and 4B, a stabilizer 7, a rear guider 8,
An upper airflow guide 6B that connects the suction grille 2, the suction port 1, and both ends of the upper portions of the two U-shaped heat exchangers 4A and 4B and shuts off the heat exchanger upper portion 13 and the air passage interior 14 is provided. It is sectional drawing of the air conditioner indoor unit which has.
In FIG. 3, the turbulence of the airflow inside the ventilation path 14 is reduced,
Further, the upper airflow guide 6 </ b> B has a substantially trapezoidal shape in order to secure the accommodating property of the air passage interior 14. FIG. 4 is a perspective view of the upper airflow guide 6B. The height of the protrusion of the upper airflow guide 6B may be any height as long as a smooth airflow is generated, and it protrudes to a height of about the upper end inside the air passage of the heat exchanger.

In the present embodiment, the above-described configuration smoothes the airflow near the upper airflow guide 6B, eliminates dead water areas described in the prior art, prevents an increase in noise value, and reduces the inside of the air passage. Of the components can be improved.

According to the experiment, as shown in Table 1, 42d
When the air blowing sound is kept at B, an increase in the air volume of 0.15 cubic meters / minute is observed as compared with the case of the conventional plate-shaped spacer 6F (the conventional technology is set to 0).

(Embodiment 3) Next, Embodiment 3 of the present invention will be described with reference to FIG. Portions having the same configuration as in the first embodiment or the second embodiment and performing the same operations are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

FIG. 5 shows a cross flow fan 5, heat exchangers 4A and 4B, a stabilizer 7, a rear guider 8,
An upper airflow guide 6C that is installed at both ends of the upper portion of the heat exchangers 4A and 4B, and cuts off the upper portion 13 of the heat exchanger and the inside 14 of the air passage. It is sectional drawing of the air conditioner indoor unit which has a.
In FIG. 5, with respect to the wind speed in the cross-flow fan longitudinal direction, in order to improve the characteristics of the air conditioner indoor unit having a wind speed distribution in which the center is maximized, to achieve a uniform wind speed distribution, and to prevent an increase in noise value. , As shown in FIG.
The upper airflow guide 6C is gradually inclined (convex) downward from the outer end so that the center becomes the vertex toward the longitudinal center of the cross-flow fan, and has a substantially triangular cross-sectional shape projecting toward the inside of the air passage. Shape.

In this embodiment, with the above-described configuration, the wind speed in the longitudinal direction of the cross-flow fan can be reduced.
It is possible to improve the characteristics of the air conditioner indoor unit having a wind speed distribution whose center is maximized, to achieve a uniform wind speed distribution, and to prevent an increase in noise value.

According to the experiment, as shown in Table 1, 42d
When the blowing sound is kept at B, an increase in the air volume by 0.25 cubic meters / minute is observed as compared with the case of the flat spacer 6F of the prior art (the conventional technology is set to 0).

Although the upper airflow guide has a substantially triangular shape in this embodiment, the upper airflow guide may have a substantially trapezoidal shape as described in the second embodiment.

(Embodiment 4) Next, Embodiment 4 of the present invention will be described with reference to FIG. Portions having the same configuration as in the first to third embodiments and performing the same operation are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

FIG. 7 shows a cross flow fan 5, heat exchangers 4A and 4B, a stabilizer 7, a rear guider 8,
An upper airflow guide 6D that bridges the suction grille 2, the suction port 1, and the upper ends of the two U-shaped heat exchangers 4A and 4B, and shuts off the heat exchanger upper part 13 and the air passage interior 14. FIG. 9 is a cross-sectional view of an air conditioner indoor unit having one or more ribs 9 at substantially constant intervals on the upper airflow guide 6D at substantially constant intervals on the upper airflow guide 6D. In FIG.
In order to improve the characteristics of the air conditioner indoor unit in which the wind velocity distribution in the longitudinal direction of the cross-flow fan becomes non-uniform and to prevent an increase in the noise value, the upper airflow guide 6D is disposed at a predetermined interval in the horizontal direction at the inside of the air passage. This has ribs 9. FIG. 8 is a perspective view of the upper airflow guide 6D having the ribs 9.

In this embodiment, by adopting the above configuration, the characteristics of the indoor unit of the air conditioner in which the wind speed distribution in the longitudinal direction of the cross-flow fan becomes non-uniform are improved, the noise value is prevented from increasing, and the air flow path is improved. It is possible to improve the internal component storage.

According to the experiment, as shown in Table 1, 42d
When the blowing sound is kept at B, an increase in the air volume by 0.25 cubic meters / minute is observed as compared with the case of the flat spacer 6F of the prior art (the conventional technology is set to 0).

Although the upper airflow guide has a substantially triangular shape in this embodiment, the upper airflow guide may have a substantially trapezoidal shape as described in the second embodiment.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to FIG. Portions having the same configuration as those of the first to fourth embodiments and performing the same operation are denoted by the same reference numerals, detailed description thereof will be omitted, and different portions will be mainly described.

FIG. 9 shows a cross flow fan 5, heat exchangers 4A and 4B, a stabilizer 7, a rear guider 8,
Suction grill 2, suction port 1, and upper air flow guide 6E that bridges the upper ends of two U-shaped heat exchangers 4A and 4B, and shuts off upper heat exchanger 13 and air passage interior 14. It is sectional drawing of the air conditioner indoor unit which has a.

In FIG. 9, the upper airflow guide 6E is made of metal, and a heat insulating sheet 10 (such as foamed polyethylene foam) is attached to the upper surface of the upper airflow guide made of metal. Is provided with a hermetic seal 11 at the portion in contact with the seal.

In the present embodiment, the above configuration ensures the strength of the upper airflow guide and prevents dew condensation due to air leakage.

[0037]

As is apparent from the above-described embodiment, the present invention makes the upper airflow guide a substantially triangular shape protruding toward the inside of the air passage, thereby smoothing the airflow near the upper airflow guide and causing death. The water area can be removed, and an increase in noise value can be prevented.

Further, according to the present invention, the upper airflow guide is formed to have a substantially trapezoidal cross-section at a portion located inside the airflow path, so that the airflow near the upper airflow guide is smoothed. The dead water area can be removed, the noise value can be prevented from increasing, and the storage capacity of components inside the air passage can be improved.

Further, in the present invention, the upper airflow guide is gradually inclined downward (convex) from the outer end so that the center becomes an apex toward the longitudinal center of the crossflow fan. It is possible to improve the characteristics of the air conditioner indoor unit in which the wind speed in the longitudinal direction has a wind speed distribution in which the center is the maximum, to achieve a uniform wind speed distribution, and to prevent an increase in noise value.

Further, according to the present invention, the upper airflow guide is provided with ribs at regular intervals in the horizontal direction, so that the characteristics of the air conditioner indoor unit in which the wind speed distribution in the longitudinal direction of the cross-flow fan becomes non-uniform. It is possible to improve and prevent a rise in noise value.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an air conditioner indoor unit according to Embodiment 1 of the present invention.

FIG. 2 is a perspective view of an upper airflow guide according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of an air conditioner indoor unit according to Embodiment 2 of the present invention.

FIG. 4 is a perspective view of an upper airflow guide according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of an air conditioner indoor unit according to Embodiment 3 of the present invention.

FIG. 6 is a perspective view of an upper airflow guide according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional view of an air conditioner indoor unit according to Embodiment 4 of the present invention.

FIG. 8 is a perspective view of an upper airflow guide according to a fourth embodiment of the present invention.

FIG. 9 is a cross-sectional view of an air conditioner indoor unit according to Embodiment 5 of the present invention.

FIG. 10 is a sectional view of a conventional air conditioner indoor unit.

[Explanation of symbols]

 4A, 4B Heat exchanger 5 Cross flow fan 6A Upper airflow guide 6B Upper airflow guide 6C Upper airflow guide 6D Upper airflow guide 9 Rib 13 Upper part of heat exchanger 14 Inside of air passage

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaki Yamamukai 1006 Kazuma Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A cross flow fan having a horizontally long shape, heat exchangers disposed upstream and downstream of the cross flow fan, before and after the cross flow fan, and installed on both ends of upper portions of both heat exchangers, An upper airflow guide that cuts off the inside of an air passage, which is an airflow passage that passes through the heat exchanger and flows to the crossflow fan side, wherein a cross-sectional shape of the upper airflow guide is inside the airflow passage. An indoor unit of an air conditioner, which has a substantially triangular shape protruding toward the air conditioner. 2. The air conditioner indoor unit according to claim 1, wherein the cross-sectional shape of the upper airflow guide is a substantially trapezoidal shape protruding toward the inside of the air passage. 3. The air conditioner indoor unit according to claim 1, wherein the upper airflow guide is convexly inclined so that the center becomes a vertex toward the longitudinal center of the cross flow fan. 4. The air conditioner indoor unit according to claim 1, wherein the upper airflow guide has one or more ribs integrally at predetermined intervals in the horizontal direction.