JP2024036117A - air conditioner - Google Patents

Abstract

An object of the present invention is to suppress the occurrence of dew condensation on a surface that defines a flow path for air that has passed through a heat exchanger.
[Solution] The air conditioner includes a cross-flow fan 14, a heat exchanger that extends from the rear of the cross-flow fan 14 toward the front so as to cover the cross-flow fan 14, and air that has passed through the heat exchanger. a first drain pan disposed below the front end of the heat exchanger; and a first drain pan disposed below the rear end of the heat exchanger. a first water conduit provided on the second surface 18n of the flow path forming member 18b opposite to the second drain pan and the first surface 18u and guiding the liquid in the second drain pan to the first drain pan; 18h. The first water conduit 18h includes a bottom surface extending downward while being separated from the second surface 18n of the flow path forming member 18b.
[Selection diagram] Figure 9

Description

The present disclosure relates to an air conditioner.

Patent Document 1 describes a cross-flow fan, a heat exchanger extending from the rear of the cross-flow fan toward the front so as to cover the cross-flow fan, and a heat exchanger disposed below the front end of the heat exchanger. An air conditioner is disclosed that has a first drain pan, a second drain pan disposed below the rear end of a heat exchanger, and a conduit that guides liquid in the second drain pan to the first drain pan. There is.

JP2017-20781A

By the way, in the case of the air conditioner described in Patent Document 1, the water conduit has a flow path that defines the flow path of the air that has passed through the heat exchanger and includes a first surface facing the end surface of the cross flow fan. provided on the member. Specifically, the water conduit is provided on the second surface of the channel forming member opposite to the first surface. The cold condensed water that has been condensed in the heat exchanger and dripped into the second drain pan flows along the second surface of the flow path forming member. Therefore, the flow path forming member is cooled, and moisture contained in the air flowing along the first surface of the flow path forming member may condense on the first surface. The condensed water may then be blown out of the air conditioner by the crossflow fan.

Therefore, an object of the present disclosure is to suppress the occurrence of dew condensation on a surface defining a flow path for air that has passed through a heat exchanger in an air conditioner having a heat exchanger.

In order to solve the above problems, according to one aspect of the present disclosure,
cross flow fan,
a heat exchanger extending from the rear to the front of the cross-flow fan so as to cover the cross-flow fan;
a flow path forming member comprising a first surface that defines a flow path for air that has passed through the heat exchanger;
a first drain pan located below the front end of the heat exchanger;
a second drain pan located below the rear end of the heat exchanger;
a first water conduit provided on a second surface of the flow path forming member opposite to the first surface and guiding the liquid in the second drain pan to the first drain pan; ,
An air conditioner is provided, in which the first water conduit includes a bottom surface that extends downward while separating from the second surface of the flow path forming member.

According to the present disclosure, in an air conditioner having a heat exchanger, it is possible to suppress the occurrence of dew condensation on a surface that defines a flow path for air that has passed through the heat exchanger.

A schematic cross-sectional view of an air conditioner according to an embodiment of the present disclosure Perspective view of the internal structure of an air conditioner Exploded perspective view of the internal structure of an air conditioner An exploded perspective view of the internal structure of the air conditioner, seen from a different perspective from Figure 3. Perspective view of the base member seen from above the front with the crossflow fan and motor installed Perspective view of the base member seen from above the front with the crossflow fan and motor removed A cross-sectional view of the left water conduit in the base member along the line AA shown in FIGS. 5 and 6 A sectional view of the right water conduit in the base member along the line BB shown in FIGS. 5 and 6 Partial sectional view near the right headrace channel

An air conditioner according to one aspect of the present invention includes a cross-flow fan, a heat exchanger that extends from the rear of the cross-flow fan toward the front so as to cover the cross-flow fan, and a heat exchanger that passes through the heat exchanger. a first drain pan disposed below the front end of the heat exchanger; a first drain pan disposed below the rear end of the heat exchanger; a second drain pan provided on the second surface of the flow path forming member opposite to the first surface and guiding the liquid in the second drain pan to the first drain pan; The first water conduit has a bottom surface extending downward while being separated from the second surface of the flow path forming member.

According to this aspect, in an air conditioner having a heat exchanger, it is possible to suppress the occurrence of dew condensation on the surface that defines the flow path of the air that has passed through the heat exchanger.

For example, the air conditioner may further include a second water conduit provided on the second surface of the flow path forming member so as to be located below the first water conduit. In this case, the slope of the second water conduit is greater than the slope of the first water conduit.

For example, the second water conduit may include a bottom surface that extends downward while separating from the second surface of the flow path forming member.

For example, an air conditioner may include a third water conduit provided on the second surface of the flow path forming member so as to be located above the first water conduit, and a third water conduit provided at the end of the heat exchanger. The refrigerant pipe may further include a water receiving member disposed below a portion of the refrigerant pipe and slanting downward toward the third water conduit.

For example, the third water conduit may include a bottom surface that extends downward while separating from the second surface of the flow path forming member.

For example, the flow path forming member may be a side wall facing an end surface of the cross flow fan.

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

FIG. 1 is a schematic cross-sectional view of an air conditioner according to an embodiment of the present disclosure. Moreover, FIG. 2 is a perspective view of the internal structure of the air conditioner. FIG. 3 is an exploded perspective view of the internal structure of the air conditioner. FIG. 4 is an exploded perspective view of the internal structure of the air conditioner, viewed from a different perspective from FIG. 3. Note that in FIGS. 1 to 4, only constituent elements related to the embodiment of the present disclosure are shown.

As shown in FIGS. 1 to 4, an air conditioner 10 according to the present embodiment includes a housing 12, a cross flow fan 14, a heat exchanger 16 that exchanges heat with air, and a base member that supports these. 18.

As shown in FIGS. 3 and 4, the cross flow fan 14 has a cylindrical shape and is rotatably supported by the base member 18 about a rotation center line C extending in the left-right direction of the air conditioner 10. ing. The cross flow fan 14 is rotationally driven by a motor 20.

As shown in FIG. 1, the heat exchanger 16 includes a rear end 16a located behind the cross-flow fan 14 and a front end 16b located in front of the cross-flow fan 14. Further, the heat exchanger 16 extends from the rear end 16a toward the front end 16b so as to cover the cross-flow fan 14 except for the lower part of the cross-flow fan 14. That is, the heat exchanger 16 is approximately "C" shaped when viewed from the left and right of the air conditioner 10.

The heat exchanger 16 also includes a plurality of refrigerant pipes 16c extending in the left-right direction of the air conditioner 10 and through which refrigerant flows, and a plurality of refrigerant pipes 16c arranged at intervals in the left-right direction of the air conditioner 10. It is composed of a plurality of fins 16d each penetrating through the fins 16d. Note that in the drawings, the plurality of fins 16d are shown in a simplified state, that is, in an integrated state. Further, the heat exchanger 16 is supported by the base member 18 via end plates 16e and 16f provided at both ends in the left and right direction, respectively.

The base member 18 is a member that supports a plurality of components of the air conditioner 10 including the housing 12, the cross flow fan 14, and the heat exchanger 16. Furthermore, the base member 18 functions as a bracket when fixing the air conditioner 10 to, for example, a wall surface in a room.

As shown in FIGS. 3 and 4, the base member 18 faces the cross-flow fan 14 in the direction in which its rotation center line C extends (in the left-right direction of the air conditioner 10), and is located at the end of the heat exchanger 16. It includes inner side walls 18a, 18b that support plates 16e, 16f. Furthermore, as shown in FIG. 1, the base member 18 includes an outlet 18c located below the cross-flow fan 14, through which air A that has passed through the heat exchanger 16 is blown out. Further, the base member 18 includes a rear guider portion 18d located behind the cross flow fan 14 and guiding the air A that has passed through the heat exchanger 14 to the outlet 18c.

The inner side walls 18a, 18b of the base member 18 and the rear guider portion 18d define a flow path for the air A that passes through the heat exchanger 14 and flows toward the outlet 18c. That is, the inner side walls 18a, 18b and the rear guider portion 18d serve as a flow path forming member that forms a flow path for the air A. The flow of air A is generated by rotation of cross flow fan 14 disposed between heat exchanger 16 and outlet 18c. Therefore, when the crossflow fan 14 rotates, air A is sucked into the housing 12 of the air conditioner 10, and the sucked air A passes through the heat exchanger 14 and is heat exchanged. Air A is blown out of the housing 12 of the air conditioner 10 through the air outlet 18c.

The base member 18 also includes a first drain pan 18e and a second drain pan 18f, as shown in FIGS. 1, 3, and 4. The first drain pan 18e is located below the front end 16b of the heat exchanger 16. Further, the second drain pan 18f is located below the rear end 16a of the heat exchanger 16. In the case of this embodiment, the first drain pan 18e is located diagonally below and in front of the second drain pan 18f with the cross flow fan 14 in between.

During cooling operation or dehumidification operation of the air conditioner 10, dew condensation occurs on the surfaces of the plurality of refrigerant pipes 16C and the plurality of fins 16d of the heat exchanger 16. The condensed water drips into the first drain pan 18e and the second drain pan 18f. The condensed water accumulated in the first drain pan 18e is discharged to the outside of the air conditioner 10 via a drain tube connected to the first drain pan 18e (not shown). The condensed water collected in the second drain pan 18f moves to the first drain pan 18e. To this end, the base member 18 includes a water conduit that guides the condensed water (liquid) in the second drain pan 18f to the first drain pan 18e.

FIG. 5 is a perspective view of the base member as seen from above on the front side with the crossflow fan and motor attached. Further, FIG. 6 is a perspective view of the base member seen from the front and upper side with the cross flow fan and motor removed. FIG. 7 is a cross-sectional view of the left water conduit in the base member taken along line AA shown in FIGS. 5 and 6. Furthermore, FIG. 8 is a cross-sectional view of the right water conduit in the base member along the line BB shown in FIGS. 5 and 6. FIG. 9 is a partial cross-sectional view of the vicinity of the right water conduit.

As shown in FIGS. 5 and 6, in the case of the present embodiment, the condensed water W (thick broken line) in the second drain pan 18f is drained from the condensed water W (thick broken line) provided on the outside of both end surfaces of the cross flow fan 14 in the left and right direction. It flows into the first drain pan 18e via the water conduits 18g, 18h, and 18i.

As shown in FIGS. 5 to 7, the water conduit 18g is provided on the left side with respect to the cross flow fan 14. In the case of the present embodiment, the water conduit 18g includes an inner side wall 18a, an outer side wall 18j disposed at intervals on the outside thereof, and extends from the outer surface of the inner side wall 18a toward the inner surface of the outer side wall 18j. It is defined from a bottom plate portion 18k. The bottom plate portion 18k is inclined downward from the second drain pan 18f toward the first drain pan 18e. A part of the condensed water W in the second drain pan 18f moves to the first drain pan 18e by this water conduit 18g.

As shown in FIGS. 5, 6, 8, and 9, the headraces 18h and 18i (first and second headraces) are provided on the right side of the crossflow fan 14.

In the case of the present embodiment, one of the water conduits 18h extends from the inner side wall 18b, the outer side wall 18m arranged at intervals on the outside thereof, and the outer surface 18n of the inner side wall 18b toward the inner surface of the outer side wall 18m. It is defined from a bottom plate portion 18p that extends. The bottom plate portion 18p is slightly inclined downward from the second drain pan 18f toward the first drain pan 18e.

The other water conduit 18i is defined by an inner side wall 18b, an outer side wall 18m, and a bottom plate portion 18q extending from an outer surface 18n of the inner side wall 18b toward an inner surface of the outer side wall 18m. The bottom plate portion 18q is inclined downward from the second drain pan 18f toward the first drain pan 18e.

As shown in FIG. 8, these water conduits 18h and 18i are provided on the outer surface of the inner side wall 18b in line with each other in the vertical direction. A water conduit 18i is provided below the water conduit 18h. The slope of the lower headrace 18i is greater than the slope of the upper headrace 18h. That is, the lower headrace 18i is more inclined than the upper headrace 18h.

Further, as shown in FIG. 9, the bottom surface of the water conduit 18h, that is, the bottom plate portion 18p of the water conduit 18h extends downward while being separated from the outer surface 18n of the inner side wall 18b, although the reason will be described later.

In addition, in the case of this embodiment, another water conduit 18r is provided above the water conduit 18h. Another water conduit 18r, like the other water conduits 18h and 18i, includes an inner side wall 18b, an outer side wall 18m, and a bottom plate portion extending from an outer surface 18n of the inner side wall 18b toward an inner surface of the outer side wall 18m. 18s. The bottom plate portion 18s is slightly inclined downward from the second drain pan 18f toward the first drain pan 18e. Further, as shown in FIG. 9, the bottom plate portion 18s of the water conduit 18r also extends downward while separating from the outer surface 18n of the inner side wall 18b, similar to the bottom plate portion 18p of the water conduit 18h, although the reason will be described later. There is. Further, the base member 18 is provided with a water receiving portion 18t (water receiving member) that slopes downward toward the water conduit 18r.

Such another water conduit 18r, unlike the other water conduits 18h and 18i, does not guide the condensed water W in the second drain pan 18f to the first drain pan 18e. As shown in FIGS. 2 and 3, above the bottom plate portion 18s and water receiving portion 18t of the water conduit 18r, there is a portion of the refrigerant pipe 16c that penetrates the right end plate 16e of the heat exchanger 16, that is, a heat exchanger. There is a part of the refrigerant pipe 16c located at the right end of the refrigerant pipe 16. Therefore, the dew condensation water generated on the surface of that portion drips onto the bottom plate portion 18s and the water receiving portion 18t. Another water conduit 18r guides the dropped condensed water to the first drain pan 18e.

These water conduits 18h, 18i, and 18r suppress the occurrence of dew condensation on the inner surface 18u of the inner side wall 18b facing the right end surface 14a of the crossflow fan 14, as shown in FIG. This will be explained in detail.

Air A that has passed through the heat exchanger 16 flows along the inner surface 18u of the inner side wall 18b. On the other hand, cold condensed water W dripping from the heat exchanger 16 to the second drain pan 18f flows outside the inner side wall 18b on the opposite side. The inner side wall 18b is cooled by the cooled dew condensation water W. Due to the cooled inner side wall 18b, moisture contained in the air A flowing along the inner surface 18u of the inner side wall 18b may condense on the inner surface 18u. There is a possibility that the condensed water on the inner surface 18u is blown out by the crossflow fan 14 through the outlet 18c to the outside of the housing 12 of the air conditioner 10, for example, into the room.

The water conduits 18h, 18i, and 18r are configured to suppress cooling of the inner side wall 18b due to such cold condensed water.

Specifically, as described above and as shown in FIG. 9, the bottom surfaces of the water conduits 18h and 18r, that is, the bottom plate portions 18p and 18s that define the water conduits 18h and 18r, extend from the outer surface 18n of the inner side wall 18b. It extends downward while moving apart. Therefore, since most of the condensed water W flowing through the water conduits 18h and 18r flows along the outer side wall 18m, the contact area between the condensed water W and the outer surface 18n of the inner side wall 18b becomes small (bottom plate parts 18p and 18s extends horizontally). Thereby, cooling of the inner side wall 18b by the cold condensed water W is suppressed. As a result, moisture contained in the air A flowing along the inner surface 18u of the inner side wall 18b is suppressed from condensing on the inner surface 18u.

In the case of this embodiment, unlike the other water guides 18h and 18r, the bottom plate portion 18q of the water guide channel 18i located below the water guide channel 18h extends downward while leaving the outer surface 18n of the inner side wall 18b. Not yet. Therefore, the contact area between the condensed water flowing through the water conduit 18i and the outer surface 18n of the inner side wall 18b is large. However, as shown in FIG. 8, the headrace 18i has a large slope compared to the other headraces 18h and 18r, so that the condensed water W flowing through the headrace 18i comes into contact with the outer surface 28n of the inner side wall 18b. Time is short. This large slope suppresses cooling of the inner side wall 18b by the condensed water W flowing through the water conduit 18i.

If possible, the bottom surface of this water conduit 18i (i.e., the bottom plate portion 18q) is also spaced apart from the outer surface 18n of the inner side wall 18b, similarly to the bottom surfaces of the other water conduit 18h, 18r (i.e., the bottom plate portions 18p, 18s). It may also extend downward. This further suppresses moisture contained in the air A flowing along the inner surface 18u of the inner side wall 18b from condensing on the inner surface 18u.

In addition, if 18 h of headraces do not exist, much dew condensation water will flow through the headraces 18i. In this case, even if the slope of the water conduit 18i is large, a large amount of condensed water W flows through the water conduit 18i, so that the inner side wall 18b is locally cooled significantly. Therefore, in the case of the present embodiment, the condensed water W in the second drain pan 18f is divided into the water conduits 18h and 18i and flows, thereby suppressing a large amount of condensed water W from flowing into the lower water conduit 18i. ing.

According to the present embodiment as described above, in the air conditioner 10 having the heat exchanger 16, the occurrence of dew condensation on the surface 18u that defines the flow path of the air A that has passed through the heat exchanger 14 is suppressed. be able to.

Although the present disclosure has been described above with reference to the above embodiments, the present disclosure is not limited to the above embodiments.

For example, in the case of the embodiment described above, the bottom plate portion 18k of the left water conduit 18g shown in FIGS. 5 to 7 does not extend downward away from the outer surface of the inner side wall 18a. This is because there is a low possibility that dew condensation will occur on the inner surface of the inner sidewall 18a. However, like the bottom plate portions 18p and 18s of the right water channels 18h and 18r, the bottom plate portion 18k of the water channel 18g may also extend downward while leaving the outer surface of the inner side wall 18a. This further reduces the possibility of condensation forming on the inner surface of the inner sidewall 18a.

Further, in the case of the above embodiment, as shown in FIG. 9, the water conduit 18h is provided on the inner side wall 18b facing the right end surface 14a of the cross flow fan 14. However, the embodiments of the present disclosure are not limited to this. That is, the water conduit according to the embodiment of the present disclosure may be provided on the other surface of the air conditioner where one surface defines the flow path for the air that has passed through the heat exchanger.

That is, in a broad sense, the present disclosure includes a cross-flow fan, a heat exchanger extending from the rear of the cross-flow fan to the front so as to cover the cross-flow fan, and a heat exchanger that extends from the rear of the cross-flow fan to the front so as to cover the cross-flow fan, a flow path forming member having a first surface defining an air flow path; a first drain pan disposed below the front end of the heat exchanger; and a first drain pan disposed below the rear end of the heat exchanger. a second drain pan, and a first guide provided on a second surface of the flow path forming member opposite to the first surface and guiding the liquid in the second drain pan to the first drain pan. The air conditioner has a water channel, and the first water conduit has a bottom surface extending downward while being separated from the second surface of the flow channel forming member.

The present disclosure is applicable to air conditioners having a heat exchanger.

14 Cross flow fan 18b Channel forming member (inner side wall)
18h First water conduit 18n Second surface (outer surface)
18u first surface (inner surface)

Claims (6)

cross flow fan,
a heat exchanger extending from the rear to the front of the cross-flow fan so as to cover the cross-flow fan;
a flow path forming member comprising a first surface defining a flow path for air that has passed through the heat exchanger;
a first drain pan located below the front end of the heat exchanger;
a second drain pan located below the rear end of the heat exchanger;
a first water conduit provided on a second surface of the flow path forming member opposite to the first surface and guiding the liquid in the second drain pan to the first drain pan; ,
The air conditioner, wherein the first water conduit includes a bottom surface that extends downward while separating from the second surface of the flow path forming member.
further comprising a second water conduit provided on the second surface of the flow path forming member so as to be located below the first water conduit,
The air conditioner according to claim 1, wherein the slope of the second water conduit is greater than the slope of the first water conduit.
The air conditioner according to claim 2, wherein the second water conduit includes a bottom surface that extends downward while separating from the second surface of the flow path forming member.
a third water conduit provided on the second surface of the channel forming member so as to be located above the first water conduit;
The air conditioner according to claim 1, further comprising: a water receiving member disposed below a part of the refrigerant piping located at the end of the heat exchanger and inclined downward toward the third water conduit. Machine. The air conditioner according to claim 4, wherein the third water conduit includes a bottom surface that extends downward while separating from the second surface of the flow path forming member.
The air conditioner according to claim 1, wherein the flow path forming member is a side wall facing an end surface of the cross flow fan.

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