JP3303491B2 - Indoor unit of 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 a crossflow type blower circuit and a structure used in an air conditioner or the like.

[0002]

2. Description of the Related Art A conventional cross-flow blower type air conditioner has a configuration as shown in FIG. 4 as described in Japanese Utility Model Laid-Open No. 4-68921. An air passage 3 is formed between the inlet 1 and the outlet 2, and the air passage 3 can be moved to the ceiling of the underframe 5 along the inner surface of the front cover 4. A detachable air filter 6, a heat exchanger 7 folded into three, and a fan 8 are disposed inside the air filter 6, and the heat-exchanged air is sent to the outlet 2 by the fan 8, and the wind direction into the room is changed. The wind speed is adjusted by the blade 9. Reference numeral 10 denotes a drain pan for receiving dehumidified water falling from each heat exchanger 7 and also a wall constituting a part of the air passage 3.

[0003]

However, in the heat exchanger having the above arrangement, the bending loss increases when air passes through the heat exchanger, and the flow performance deteriorates.

[0004] In addition, merely disposing a fan inside a heat exchanger that is bent into three causes a drift, resulting in a non-uniform flow velocity distribution, leading to a deterioration in flow performance.

[0005]

Means for Solving the Problems A first technical means of the present invention for solving the above-mentioned problems is that of a front side, a center and a back side.
When three independent heat exchangers are viewed from the center of the cross flow fan, the entire area in the suction direction is surrounded by the three heat exchangers, and the heat exchangers are as nearly perpendicular to the radial direction of the cross flow fan as possible. and so, the center of the heat exchanger the <br/> front side, an air conditioner, characterized by disposing put "π" type on the rear side heat exchanger.

A second technical means is an air conditioner characterized in that an air -impermeable spacer is inserted into a junction of each of the heat exchangers on the front side, the center, and the rear side .

[0007]

The air passing through the heat exchanger is bent by arranging the heat exchanger as the first and second technical means so as to be as vertical as possible to the radial direction of the cross flow fan. Loss is reduced and flow performance is improved. Also,
Disturbance due to flow bending is reduced, and noise can be reduced.

By enclosing the entire area in the suction direction as viewed from the center of the fan of the cross flow blower with a heat exchanger, the suction flow can be made smooth and a flow field with small turbulence can be formed to reduce noise. Further, the inflow velocity distribution at the fan outer peripheral portion is made uniform, and the flow rate performance is improved.

In the first technical means, even if air is sucked in from the end face (cut surface) of the heat exchanger at the connection part of each heat exchanger, heat is sufficiently exchanged, so that the flow rate performance is further improved. .

[0010]

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

FIG. 1 is a perspective view of an embodiment of the present invention.
Reference numeral 11 denotes a main body. The main body 11 is composed of an underframe 5 and a front cover 4 attached to the front of the underframe 5, and an upper portion of the underframe 5 and the front cover 4 has an indoor air suction port 1. The outlet 2 is formed in the lower part.

FIG. 2 is a cross-sectional view of the first embodiment of the present invention. The general flow and configuration will be described. When the room air is sucked from the suction port 1 provided in the front cover 4 and the underframe 5, the removable air filter 6 provided along the inner surface of the front cover 4 is removed. , And independent 3
It passes through the heat exchangers 7a, 7b, 7c and is sucked into the fan 8. Here, suction from the end faces (cut surfaces) 7b1 and 7b2 of the heat exchanger 7b at the connection portions of the respective heat exchangers is also added, and the flow performance is improved. The fan 8
The air is discharged from the outlet 2 through an air passage 3 formed by a rear guider 12 and a stabilizer 13 around the periphery.
The arrows represent the general flow trajectory. In order to fill the gap of the heat exchanger 7, an impermeable spacer 14 is inserted.
The three independent heat exchangers 7a, 7b, 7c are made as close as possible to the radial direction of the fan 8 as much as possible, and the suction direction (160 °- 200 ゜). Further, the air conditioner is characterized in that the central heat exchanger is placed on the front side heat exchanger and the rear side heat exchanger and arranged in a “π” shape.

FIG. 3 is a cross-sectional view of a second embodiment of the present invention. The general flow and configuration will be described. When the room air is sucked from the suction port 1 provided in the front cover 4 and the underframe 5, the removable air filter 6 provided along the inner surface of the front cover 4 is removed. Then, it passes through the heat exchanger 7 folded in four and is sucked into the fan 8. A rear guide 12 and a stabilizer 13 are provided around the fan 8.
Are discharged from the outlet 2 through the air passage 3 formed by The arrows represent the general flow trajectory. Each of the four regions 7d, 7e, 7f, 7g of the heat exchanger 7 is made as close as possible to the radial direction of the fan 8 as much as possible, and furthermore, the suction direction (from the center of the fan 8) 160 ゜ to 200 ゜). An impermeable spacer 14 is inserted into the gap between the bent portions of the heat exchanger 7.

[0014]

By arranging the heat exchangers of the first and second embodiments so as to be as vertical as possible to the radial direction of the cross flow fan, the air passing through the heat exchanger is Bending loss is reduced. This is because when the air passes through the heat exchanger, it passes through the suction surface and the blowing surface of the heat exchanger almost perpendicularly, and further flows almost radially in the vicinity of the outer peripheral portion where it is sucked into the cross flow fan.

By enclosing the entire region in the suction direction as viewed from the center of the fan of the cross flow blower with a heat exchanger, the suction flow can be made smooth and a flow field with small turbulence can be formed to reduce noise. Further, the inflow velocity distribution at the fan outer peripheral portion is made uniform, and the flow rate performance is improved.

In the first embodiment, since heat is sufficiently exchanged even when air is sucked in from the end faces (cut surfaces) of the heat exchangers at the connection portions of the respective heat exchangers, the flow rate performance is further improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the first embodiment of the present invention.

FIG. 3 is a cross-sectional view of a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inlet 2 Outlet 3 Blow path 4 Front cover 5 Underframe 6 Air filter 7 Heat exchanger 8 Fan 9 Wind speed blade 10 Dray pan 11 Main body 12 Rear guide 13 Stabilizer 14 Spacer

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-344033 (JP, A) JP-A-7-145993 (JP, A) JP-A 4-68921 (JP, U) JP-A 3-68921 13028 (JP, U) (58) Fields studied (Int. Cl. ⁷ , DB name) F24F 13/30 F24F 1/00 311

Claims (2)

(57) [Claims] 1. A cross-flow fan comprising a plurality of blades each having a predetermined length arranged in a columnar shape and arranged in a rotational axis direction, a cross flow fan, a stabilizer positioned close to and opposed to the impeller, and a flow path. , A rear guider, an air filter, a suction grille, and a heat exchanger that is independent of the front, center, and rear sides. An indoor unit for an air conditioner, wherein the indoor heat exchanger is surrounded by the three heat exchangers, and the central heat exchanger is placed on the front heat exchanger and the rear heat exchanger and arranged in a “π” shape. . 2. The indoor unit for an air conditioner according to claim 1, wherein an air-impermeable spacer is inserted into a joint of each of the heat exchangers on the front side, the center, and the rear side.