JP3377671B2 - Air conditioner drain pan - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain pan of an air conditioner for draining drain generated in a multi-stage bending heat exchanger or the like. 2. Description of the Related Art In recent years, in air conditioners, there has been a demand for increasing the air intake area and reducing ventilation resistance. It has been considered to improve the heat exchange performance by taking in air from the ground. [0003] To cope with the above demands, a multi-stage bending heat exchanger is provided in the air conditioner body. As shown in FIG. 3, the multistage bending heat exchanger includes a front side intake port 2 and a top side intake port 3 of a case 1 and a cross flow fan 4.
Each of the heat exchangers 5 is formed by laminating a plurality of plate fins and inserting a heat exchange tube to form a single unit.
A, 5B, and 5C are arranged in a state of being bent in multiple stages at a required angle in the direction of the cross flow fan. Incidentally, such heat exchangers 5A, 5A
In B and 5C, when the cross flow fan 4 rotates in the direction of the arrow (a) shown in the drawing, the indoor air flow 6 is taken into the air conditioner through the suction ports 2 and 3 of the case 1 and the heat exchangers The heat exchange is performed at the temperature of the medium flowing in the heat exchange tubes constituting the tubes 5A, 5B, and 5C, and the heat is blown into the room from the outlet 7 through the cross flow fan 4. , 5B, and 5C, water drops due to dew condensation, that is, drains are generated and adhere to the surfaces of the heat exchangers 5A, 5B, and 5C, and the amount of the drain gradually increases, and the lower portions of the heat exchangers 5A, 5B, and 5C are removed from the heat exchangers 5A, 5B, and 5C. And adversely affect other components of the air conditioner. Therefore, conventionally, drain pans 8, 9 are arranged near the lower portions of the heat exchangers 5A, 5C and the like, and
Drain from A and 5C is received, guided in the required direction, and drained. Of these drain pans 8, 9, for example, the upper drain pan 9 has a structure as shown in FIG. 4 when the bottom of the drain pan is viewed from the side of the cross flow fan 4 shown in FIG. The upper drain pan 9 includes a drain pan main body 9a having a longitudinal direction defined by the plate fin stacking direction of the heat exchanger 5C, and a cross section in a direction perpendicular to the longitudinal direction is formed in a substantially V shape, and a longitudinal direction of the drain pan main body 9a. A drain port 9b is provided at one end for draining the drain in the drain pan body in a required direction. However, the above-described drain pan 9 has a shape in which the bottom surface of one end of the drain pan main body 9a is cut out, and the drain pan 9 directly extends downward from the wall surface at one end of the cut-out portion. As shown in FIG. 4B, the drain 9b which is originally expected.
Although the flow direction of c is the direction of the solid line (b) in the figure, if the flow force of the drain 9c becomes strong, it flows out in the direction shown by the dotted line (b ') in the figure, and is intended by the designer. It cannot be properly guided to the direction and location. The present invention has been made in view of the above circumstances, and has been developed to provide a drain pan for an air conditioner that guides the drain in the drain pan in an optimal direction regardless of the strength of the drain flow and reduces the risk of drain leakage. The purpose is to provide. [0009] In order to solve the above-mentioned problems, the invention according to claim 1 is provided below a heat exchanger, and drain water generated in the heat exchanger is provided. Drain pan
In the drain pan of the air conditioner to drain through the drainage port provided so as to extend from one end of the body downwardly, said
The side where the drain water protrudes from the drain pan body
From the lower end of the wall to the inner wall
A flow change surface is formed at the end of the flow change surface and the inner wall surface.
This is a drain pan of an air conditioner in which an opening of the drain port is formed . [0010] The invention corresponding to the first aspect is characterized in that, by adopting the above means,
Since there is provided the flow changes surface for directing the flow of the drain inward wall surface direction from the lower end surface of the wall for receiving the to drain, even when a strong momentum of the drain flow in the drain pan, drain
Drain hitting the wall on the receiving side descends downward
Guides the flow direction of the drain to the drain port side when the flow changes
Therefore, it is possible to guide the drain in the direction intended by the designer, and it is possible to reduce the risk due to drain leakage. An embodiment of the present invention will be described below with reference to the drawings. Although the drain pan of the air conditioner according to the present invention is applied to the heat exchanger 5C in the multi-stage bending heat exchanger as shown in FIG. 3, it is particularly limited to the application of the multi-stage bending heat exchanger. Not something. However, for the sake of convenience, the relevant parts of the air conditioner will be described using the reference numerals of the air conditioner shown in FIG. FIG. 1 is a view showing one embodiment of a drain pan of an air conditioner according to the present invention. This drain pan 10
Is disposed, for example, in the vicinity of the lower portion of the heat exchanger 5C, and has a function of receiving drain dripped from the heat exchanger 5C, guiding the water in a required direction, and draining the water. The drain pan 10 has a longitudinal direction in which the plate fins are stacked in the heat exchanger 5C, and a cross section in a direction perpendicular to the longitudinal direction is determined by the bottom shape of the heat exchanger 5C and other components. However, for example, a drain pan main body 11 formed in a substantially V-shape as in the related art,
A drain port 12 is provided at one end in the longitudinal direction of the drain pan main body 11 for guiding the drain in the drain pan main body in a required direction to drain the drain. The length of the drain pan body 11 has a length enough to completely receive the heat exchangers 5C stacked in the plate fin stacking direction, and has a sectional shape in a direction perpendicular to the longitudinal direction of the drain pan body 11. Has a shape in which an upper frontage is formed to be wide, gradually narrows from the upper frontage toward the lower side, and communicates integrally at a lowermost portion. With such a cross-sectional shape, after the drain dripping from the heat exchanger 5C is received by the wide frontage, it is guided to the bottom inside the drain pan main body 11, and the drain port 1
It has the function of flowing naturally in two directions. The drain port 12 is provided so as to extend downward from one end in the longitudinal direction of the drain pan main body 11, and a flow changing surface 13 for directing the flow of the drain toward the inner wall surface of the drain port 12. Are formed. Specifically, the flow changing surface 13 is formed integrally so as to change the flow of the drain in the direction from the lower end surface of the wall surface 12a on the side from which the strong drain pops out to the inner wall surface 12b. An opening 14 of the drain port 12 is formed at an end of the thirteen opposite to the wall surface 12a. Therefore, according to the structure of the drain pan as described above, the drain 15 extends in the direction of the inner wall surface 12b of the drain port 12.
The flow changing surface 13 that directs the flow is formed. Therefore, even when the flow of the drain 15 in the drain pan is strong, the flow direction of the drain 15 is changed by the flow changing surface 13 and one end of the flow changing surface 13. The drain 15 in the drain pan main body 11 can be guided to the direction 16 and the place intended by the designer, and the risk of water leakage can be reduced. FIG. 2 is a view showing another embodiment of the drain pan of the air conditioner according to the present invention. The drain pan shown in FIG. 2 is composed of a drain pan main body 11 and a drain port 12 for guiding the drain in the drain pan main body in a required direction to one end in the longitudinal direction of the drain pan main body 11 to drain as described above. And a flow change surface 13 integrally formed so as to protrude into the drain port 12 from a side wall surface 11c forming the drain port 12.
Is arranged. Since the flow changing surface 13 is slightly inclined in the direction in which the drain projects, it is less likely to be scattered even if a strong force of the drain collides, and the opening 14 is formed.
, The drain 15 can be reliably discharged in the direction intended by the designer, and the risk of water leakage and the like can be reduced. As described above, according to the present invention, the drain in the drain pan can be surely guided in the intended direction regardless of the strength of the drain flow, and the air conditioning mechanism by water leakage is provided. The risk of adult failure can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway bottom view showing an embodiment of a drain pan of an air conditioner according to the present invention and a view showing a flow of drain. FIG. 2 is a diagram showing a flow of drain for explaining another embodiment of the drain pan of the air conditioner according to the present invention. FIG. 3 is a side sectional view of an air conditioner in which a drain pan is provided below each heat exchanger. FIG. 4 is a partially cutaway bottom view of a drain pan of a conventional air conditioner and a diagram showing a drain flow. [Description of Signs] 5A, 5B, 5C: heat exchanger, 9: drain pan, 11:
Drain pan body, 12: drain port, 13: flow change surface.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 52-101234 (JP, U) JP-A 1-7018 (JP, U) JP-A 49-28950 (JP, U) JP-A 60- 180922 (JP, U) Japanese Utility Model Hei 4-74220 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 1/00 361

Claims (1)

(57) [Claims 1] A drain disposed below a heat exchanger and provided so that drain generated in the heat exchanger extends downward from one end of a drain pan main body. In a drain pan of an air conditioner that drains water through a mouth, a flow changing surface is formed so as to be integrated in a direction from a lower end surface of a wall surface on a side where the drain protrudes from the drain pan body to an inner wall surface, and the flow changing surface is formed. A drain pan for an air conditioner, wherein an opening of the drain port is formed between an end and an inner wall surface.