JP2002181346A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve condensability of a condenser by effectively utilizing the latent heat of condensed water. SOLUTION: Upstream side of the drain splash direction, shown by arrow A, in each fin 40 of the condenser, is constituted of a bent portion 40B which has been formed by a bending processing. As the bent portion 40B is formed, so that bending lines 44A, 44B are inclined downward from the upstream to the downstream of the splash direction, when the condensed water is splashed against the condenser from a slinger ring, the condensed water collides with the fin 40 and a portion of the collided condensed water (mainly the condensed water that has collided against the vicinity of the trough line 44A) runs down along the line 44A so as to be retained by a boundary portion 43 between the bent potion 40B and a normal flat portion 40A. Accordingly, all condensed water retained is evaporated, and thus consumption of the latent heat contributes to the condensation of refrigerant. In this way, condensability of the condenser can be improved, by effectively utilizing the latent heat of the condensed water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a condenser comprising a plurality of flat fins and a heat transfer pipe arranged to penetrate the fins, and a condenser for condensed water condensed by an evaporator. The present invention relates to an air conditioner having a means for splashing toward a fin.

[0002]

2. Description of the Related Art Conventionally, in a general air conditioner,
The high-temperature and high-pressure refrigerant compressed by the compressor is condensed and liquefied by the condenser, and the liquefied refrigerant is throttled and expanded by the throttle mechanism and evaporated and gasified by the evaporator. This gas is sucked into the compressor and compressed again. The air-conditioning operation is performed by repeating such a series of cycles.

In such an air-conditioning operation, when the refrigerant evaporates in the evaporator, the moisture in the room air adheres to the evaporator and becomes condensed water (drain). The condensed water is supplied to a heat medium pipe 92 (FIG. 6) serving as a refrigerant passage through a plurality of flat fins 9.
4 (FIG. 7) having a structure penetrating therethrough (FIG. 7)
A technique is known in which the refrigerant is effectively condensed by the condenser by utilizing the latent heat of the condensed water by splashing the fins 94 on the fins 94.

On the other hand, heat exchangers such as condensers and evaporators generally include high-density fins 94 (FIG. 7) in which the fin pitch is reduced and the number of fins is increased in order to increase the amount of heat exchange. It is. The high-density fins 94 are usually formed by removing notches such as slits as shown in FIG. 7 in order to prevent the ventilation resistance from being increased by condensed water adhering to the outdoor heat exchanger serving as an evaporator during heating. It has a plain fin structure where water easily drops.

[0005]

However, in the fin 94 having such a plain fin structure, the condensed water splashed on the fin 94 immediately drops from the fin 94, and the latent heat of the condensed water is effectively used. It has been difficult to effectively condense the refrigerant by the condenser.

As a technique for effectively utilizing the latent heat of the condensed water splashed on the condenser, Japanese Utility Model Application Laid-Open No. 63-10491 discloses a technique.
No. 4 and the microfilm, on both sides of the fin,
By alternately providing slit-shaped notches inclined toward the fin center, a structure in which splashed condensed water flows downward in a zigzag course along the notches,
A technique has been disclosed in which the time and distance over which condensed water flows are increased to increase the efficiency of use of latent heat by evaporation of condensed water.

However, this technique is merely a technique for increasing the time and distance of the condensed water flowing on the fin surface, and in fact, only utilizes the latent heat due to evaporation of a small portion of the condensed water. There was a limit to the effective use of garbage.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide an air conditioner capable of improving the condensation performance of a condenser by effectively utilizing the latent heat of condensed water. And

[0009]

In order to achieve the above object, the present invention comprises a plurality of flat fins which stand substantially parallel to each other and a heating medium tube which is arranged to penetrate the fins. In the air conditioner having a condenser constituted by: and condensed water condensed by the evaporator, and splashed toward the fins of the condenser, the condensed water splashed by the splashing means A condensed water holding portion for holding is formed on the fin.

That is, an air conditioner according to the present invention is a condenser including a plurality of plate-like fins erected substantially in parallel with each other and a heat medium pipe arranged to penetrate these fins. And a splashing means for splashing condensed water condensed in the evaporator toward the fins of the condenser. By splashing the condensed water toward the fins of the condenser by the splashing means, the splashed condensed water evaporates by the heat of the condenser, and the latent heat of the condensed water contributes to the condensation of the refrigerant. According to the present invention, the condensed water holding portion for holding the splashed condensed water is formed on the fin.

Therefore, when the condensed water splashes toward the fins of the condenser, the condensed water is retained by the condensed water retaining portion formed on the fin without immediately dropping from the fin. Therefore, the latent heat consumed to evaporate all the retained condensed water contributes to the condensation of the refrigerant, and the condensing performance of the condenser can be improved by effectively utilizing the latent heat of the condensed water.

[0012] The condensed water holding portion can be constituted by a bent portion formed by bending the fin so that the folding line descends from the upstream to the downstream in the splashing direction on the fin in the splashing direction. In this case, when the condensed water splashes toward the fins of the condenser, the condensed water hits the bent portion and descends along the fold line toward the splash direction downstream, and
It is held at the boundary between the bent part and the other part. In this manner, the splashed condensed water is held by the condensed water holding portion without immediately dropping from the fins, so that the latent heat of the condensed water can be effectively used to improve the condensation performance of the condenser.

Further, the condensed water holding portion can be constituted by a concave portion formed by cutting out the surface of the fin. In this case, when the condensed water splashes toward the fins of the condenser, the condensed water hits the surface of the fin and is retained in the concave portion on the surface. As described above, since the splashed condensed water is held by the condensed water holding portion (concave portion) without immediately dropping from the fin, the condensed water latent heat is effectively used to improve the condensation performance of the condenser. Can be.

[0014] At this time, it is desirable that the concave portion is formed on the fin on the upstream side in the splashing direction, and the condensed water splashed on the concave portion is formed on the concave portion more than when formed on the center portion of the fin or on the downstream side in the splashing direction. The probability of being retained is increased, and the efficiency of using latent heat of condensed water can be further improved.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the air conditioner according to the present invention will be described below.

[First Embodiment] As shown in FIG.
The air conditioner 10 according to the embodiment includes an evaporator 14, a condenser 1
6. Indoor fan 18, outdoor fan 20, slinger 22 integrated with outdoor fan 20 (corresponding to splashing means), fan motor 24, indoor and outdoor partition wall 2.
6 and a drain pan 28 as a tray for receiving condensed water (drain) generated in the evaporator 14, and these are housed in the outer case 12. This outer case 12
Are provided with an outlet 30 for the indoor airflow and an outlet 32 for the outdoor airflow.

In such an air conditioner 10, high-temperature and high-pressure refrigerant compressed by a compressor (not shown) is supplied to the condenser 16.
Is condensed and liquefied. The liquefied refrigerant is throttled and expanded by a throttle mechanism (not shown), and is evaporated and gasified by the evaporator 14. This gas is sucked into the compressor and compressed again. The air conditioning operation is performed by repeating such a cycle.

The drain pan 28 is disposed so as to cover the lower part of the evaporator 14 and the lower part of the condenser 16, and the bottom of the drain pan 28 is inclined so as to descend from the evaporator 14 side to the condenser 16 side. Is provided. For this reason, when the refrigerant evaporates in the evaporator 14, the moisture in the indoor air adheres to the evaporator 14 and becomes condensed water 34, which is dropped on the drain pan 28. The dropped condensed water is stored in the lower part of the condenser 16 and the slinger ring 22 by the inclination. The condensed water 34 stored in the lower part of the slinger ring 22 is splashed in the direction of arrow A toward the condenser 16 by the rotating slinger ring 22.

As shown in FIG. 3, the condenser 16 is provided with a large number of flat fins 40 standing substantially parallel to each other. As shown in FIG. Tube 5
A large number of through-holes 42 through which 0 passes are provided. The heat medium pipe 50 is disposed so as to penetrate the flat surface of the fin 40 in a substantially vertical direction.

As shown in FIGS. 2 (a) and 2 (b), in each fin 40, the direction in which each fin 40 bounces (arrow A).
Direction) The upstream side (the right side in FIG. 2) is configured by a bent portion 40B formed by bending. The bent portion 40B is formed by bending so that the folding lines 44A and 44B descend from the upstream side (right side) to the downstream side (left side) in the direction of splash.

In the air conditioner 10 having such a configuration, when the condensed water 34 is splashed toward the condenser 16 by the slinger ring 22, the condensed water 34 hits the fins 40 and a part thereof (mainly in the drawing). 2 (b) valley line 44
A), descends along the valley line 44A, and the bent portion 40B and the normal flat plate portion 40A
Is held at the boundary portion 43 between them. Therefore, the latent heat consumed to evaporate all of the condensed water 34 retained here contributes to the condensation of the refrigerant, and the condensing performance of the condenser 16 is improved by effectively utilizing the latent heat of the condensed water 34. be able to.

[Second Embodiment] In the air conditioner of the second embodiment, the fins 40 in the condenser 16 are configured as follows. Note that other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

That is, as shown in FIGS. 4 (a) and 4 (b), in each fin 60, a concave portion 60A formed by cutting out the fin surface is provided on the upstream side of each fin 60 in the direction of the splash (in the direction of arrow A). Is provided. This recess 60A
This is for holding the condensed water splashed on the fins 60, and its vertical cross-sectional shape is configured to be substantially trapezoidal as shown in FIG. 4B.

Of course, the vertical cross-sectional shape of the recess is not limited to this, and other shapes that can hold condensed water can be adopted. For example, the recess 60A may be configured so that the vertical cross-sectional shape is a rectangle, a semicircle, or the like.

In the air conditioner 10 having such a configuration, when the condensed water 34 is splashed toward the condenser 16 by the slinger ring 22, the condensed water 34 hits the fin 40 and a part thereof (mainly the concave portion 60A). (Which hit the vicinity) is held in the recess 60A. Therefore, the latent heat consumed to evaporate all of the condensed water 34 retained here contributes to the condensation of the refrigerant, and the condensing performance of the condenser 16 is improved by effectively utilizing the latent heat of the condensed water 34. be able to.

In particular, when the width of the fin 60 along the direction of the arrow A is large, the recess 60A is not necessarily provided in the fin 60.
Need not be formed on the entire surface of the fin 60, but may be formed on a portion where the condensed water 34 easily hits, that is, on the fin 60 in the splashing direction upstream side as shown in FIG.

[0027]

As described above, according to the present invention,
Since the condensed water holding portion for holding the splashed condensed water is formed on the fin, the condensed water held by the condensed water holding portion without the dripping of the splashed condensed water immediately from the fins is retained. The latent heat consumed to evaporate all contributes to the condensation of the refrigerant, and the condensing performance of the condenser can be improved by effectively utilizing the latent heat of the condensed water.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an air conditioner according to an embodiment of the present invention.

FIG. 2A is a front view of a fin according to the first embodiment, and FIG. 2B is a partial side view thereof.

FIG. 3 is a side view of the condenser of the first embodiment.

FIG. 4A is a front view of a fin according to a second embodiment, and FIG. 4B is a partial side view thereof.

FIG. 5 is a side view of a condenser according to a second embodiment.

FIG. 6 is a perspective view of a conventional condenser.

FIG. 7 is a front view of a conventional fin.

[Explanation of symbols]

10 air conditioner, 14 evaporator, 16 condenser, 2
2 ... Slinger, 40 ... Fin, 40B ... Bending part, 50 ... Heat medium tube, 60 ... Fin, 60A ... Recess

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F28F 1/32 F24F 1/02 401B

Claims (4)

[Claims] A condenser configured to include a plurality of flat fins standing substantially parallel to each other and a heat transfer pipe arranged to penetrate the fins; and a condensed water condensed by an evaporator. A splashing means for splashing toward the fins of the condenser, wherein the condensed water holding portion for holding the condensed water splashed by the splashing means is formed on the fin. An air conditioner characterized by the above-mentioned. 2. The condensed water holding portion is formed by a bent portion formed by bending so that a fold line descends from the upstream in the splash direction to the downstream in the splash direction in the fin. The air conditioner according to claim 1, wherein 3. The air-conditioning apparatus according to claim 1, wherein the condensed water holding portion is formed by a concave portion formed by cutting out a surface of the fin. 4. The fin according to claim 3, wherein the fin is formed on an upstream side of the fin in a splashing direction.
The air conditioner as described in the above.