JP2012052723A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a heat exchanging performance, by decreasing a ventilation resistance of a heat exchanger, and thereby decreasing a deviation of a wind speed distribution.SOLUTION: An air conditioner includes the heat exchanger 3 inclined to an air inlet 2 of a casing 1, and a support member 8 covering the heat exchanger 3. In the air conditioner, the air is taken from an upstream side end surface 12 and an upstream side principal surface 11 of the heat exchanger 3 being the upstream of an air flow.

Description

  The present invention relates to a heat exchanger for an air conditioner.

  In recent years, energy saving and high efficiency are demanded not only for home use but also for large-scale air conditioners for business use, and in order to increase the number of installed air conditioners, downsizing of air conditioners is also required. Therefore, as many heat exchangers as possible are arranged inside the housing by tilting or bending the heat exchanger. However, if the heat exchanger is formed as described above, the wind speed distribution of the air passing through the heat exchanger is biased, and the performance of the heat exchanger cannot be utilized.

  The thing of patent document 1 arrange | positions a heat exchanger in reverse V shape, and makes the heat exchanger by making the row | line | column number of the heat exchanger of a main body back side more than the row | line number of the heat exchanger of a main body outlet. The air velocity distribution of the passing air is made uniform.

  Patent Document 2 discloses a slow-speed means for slowing the speed of air sucked from the suction port at the upper rear portion of the front panel, and for deflecting the suction air flow so as to be orthogonal to the downward inclined portion of the heat exchanger. Are provided so that the sucked air passes through the heat exchanger efficiently and evenly.

JP 2004-245481 A JP 2001-280645 A

  However, in Patent Document 1, since the heat exchanger is relatively large, a support structure is required around the heat exchanger in order to form the heat exchanger, and the support structure itself provides ventilation resistance. There are challenges.

  In the said patent document 2, since the shielding board is provided in the heat exchanger upper part and it is made for a suction air not to pass through, there exists a subject that a shielding board becomes ventilation resistance.

  An object of the present invention is to reduce the deviation of the wind speed distribution of the heat exchanger.

  In order to achieve the above purpose, in the present invention, in an air conditioner including a heat exchanger inclined with respect to an air suction port of a housing and a support member covering the heat exchanger, the air stream is upstream. Air is sucked from the upstream end surface and the upstream main surface of the heat exchanger.

  Further, in an air conditioner including a heat exchanger inclined with respect to an air suction port of a housing and a support member that covers the heat exchanger, a downstream end face and a downstream side of the heat exchanger that are downstream of an air flow It is characterized by blowing air from the main surface.

  According to the present invention, it is possible to reduce the deviation of the wind speed distribution of the heat exchanger.

It is a side view of the air conditioner concerning the present invention. It is a perspective view of the heat exchanger in Example 1. FIG. It is the figure which compared the wind speed distribution of the heat exchanger in Example 1, and the wind speed distribution of a prior art. It is the figure which compared the wind speed distribution of the heat exchanger in Example 2, and the wind speed distribution of a prior art. It is the figure which compared the wind speed distribution of the heat exchanger in Example 3, and the wind speed distribution of a prior art. It is a side view which shows the wind speed distribution of the heat exchanger in a prior art, and the flow of a wind.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a cross-sectional view of an air conditioner as viewed from the side. An air inlet 2 and a heat exchanger 3 are arranged at the upper part of the housing 1, and a blower 4 and an air outlet 5 are arranged at the lower part. Air is sucked in from the air inlet 2 by the rotation of the blower 4, adjusted to an arbitrary temperature or humidity by the heat exchanger 3, and blown out from the air outlet 5.

  In the present embodiment, an example in which a plurality of heat exchangers 3 are combined to form an inverted V shape, and air flows in from the upper part of the housing 1 and flows in the order of the heat exchanger 3 and the blower 4 will be described.

  FIG. 2 is a perspective view of the heat exchanger in the present embodiment. The heat exchanger 3 has a plurality of rectangular plate-like fins stacked, and a heat transfer tube (not shown) through which the refrigerant passes is passed through the plate-like fins. The sucked air passes between the fins and exchanges heat. In this embodiment, the surface of the heat exchanger on the long fin side is referred to as the main surface, and the surface of the heat exchanger on the short fin side is referred to as the end surface. The air suction side is referred to as the upstream side, and the blowout side is referred to as the downstream side.

  Since the large heat exchanger 3 is heavy, the support member 8 covers and reinforces the periphery of the heat exchanger 3 so that the fins of the installation portion are not deformed or damaged when the heat exchanger 3 is installed at an angle. In FIG. 2, the support member 8 is provided so as to be applied to the main surface (upstream main surface 11) of the heat exchanger 3, but it may be provided so that the shape of the heat exchanger 3 can be maintained. Therefore, it is preferable to reduce the area of the support member 8 as much as possible so as not to disturb the flow of the intake air. By providing a support member having the first ventilation port 9a on the upstream end surface 11 that sucks air into the heat exchanger 3, air is sucked not only from the upstream main surface 11 but also from the end surface.

FIG. 3 shows a comparison between the present embodiment and the wind speed distribution of the prior art.
The support member 8 is provided with a first ventilation port 9a and sucks air from the upstream end face 12 as indicated by a hollow arrow, so that the support member 8 does not have the first ventilation port 9a. The intake air which collides with 8 decreases. As a result, the intake air is difficult to decelerate and the air smoothly flows into the heat exchanger 3, so that the wind speed in the vicinity of the support member 8 on the upstream side of the heat exchanger 3 is increased. As shown in FIG. 3, as the wind speed in the vicinity of the support member 8 increases, the wind speed in the lower part of the heat exchanger 3 becomes slower, and the deviation of the wind speed passing through the heat exchanger 3 can be reduced. As in the present embodiment, the air suction port 2 is provided on the upper surface of the housing 1, the blower 4 is provided on the lower portion, and the air flow path is linearized, whereby the heat provided between the air suction port 2 and the blower 4. The air flow path through the exchanger 3 is not complicated.

  A solid line indicates the wind speed distribution 10 of the present embodiment, and a broken line indicates the conventional wind speed distribution 7. To explain schematically, if the amount of air flowing in is constant, the total length of the arrows indicating the wind speed in the figure is also constant. In other words, if the arrow somewhere is long (wind speed is fast), the long arrow is short (wind speed is slow) to balance the whole and alleviate the wind speed bias. Accordingly, heat can be more evenly exchanged with air in the heat exchanger 3, so that the performance and efficiency of the heat exchanger can be improved. In the case of the same level of performance, the heat exchanger can be reduced in size, so that the air conditioner can also be reduced in size. In addition, the operation load of the fan and the compressor can be reduced, and energy can be saved.

  FIG. 6 shows the wind speed distribution and wind flow of the heat exchanger in the prior art. In the conventional air conditioner, the support member 6 of the heat exchanger 3 obstructs the flow of air, and the support member 6 itself has ventilation resistance. Thereby, the upper part of the heat exchanger 3 into which the air colliding with the support member 6 flows has a low wind speed, and the lower part has a higher wind speed than the upper part, and the conventional wind speed distribution 7 becomes non-uniform.

  In this embodiment, the air conditioner is configured as a top suction bottom blow, but other forms (top suction front blow, top suction back blow, bottom suction top blow, bottom suction front blow, bottom suction back blow, front draw (Suction top blowout, front suction bottom blowout, back suction top blowout, back suction bottom blowout, side suction top blowout, side suction bottom blowout, etc.). Moreover, it is only necessary to provide a heat exchanger having a shape inclined with respect to the air suction port of the housing so as to suck or blow air at the end face of the heat exchanger, and the heat exchanger 3 has only an inverted V shape. In addition, a V shape, a linear shape, etc. are applicable. In addition, when the heat exchanger 3 is formed in an inverted V shape or V shape, the air passing through the heat exchanger 3 is deflected inward by providing the blower 4 in the direction in which the V shape opens. It is easy to be sucked into the blower 4.

  FIG. 4 shows a comparison between the present embodiment and the wind speed distribution of the prior art.

  In the first embodiment, the first ventilation port 9a is provided at the upper part of the support member 8 of the heat exchanger 3 so that air is also sucked from the upstream end face 12. However, in this embodiment, the first ventilation port 9a is not at the upper part but at the lower part. Two ventilation openings 9b are provided to blow out air not only from the downstream main surface 13 but also from the downstream end surface 14.

  Since the second ventilation port 9b is provided in the support member 8 and the air is blown out also from the downstream end face 14, the ventilation resistance portion of the support member 8 that has fixed the lower portion of the heat exchanger 3 is reduced. Therefore, the second ventilation port Air also blows out from 9b. Thereby, the area of the wind speed distribution 10 of a present Example spreads rather than the conventional wind speed distribution 7. FIG. As shown in FIG. 4, as the area increases, the wind speed at the lower part of the heat exchanger 3 becomes slower. The slow wind speed is dispersed in the second ventilation port 9b and the upper part of the heat exchanger 3, and the deviation of the wind speed passing through the heat exchanger 3 can be reduced.

  FIG. 5 shows a comparison of the wind speed distribution of the present embodiment and the prior art.

  In the present embodiment, the first ventilation port 9 a is provided at the upper part of the support member 8 of the heat exchanger 3, and the second ventilation hole 9 b is provided at the lower part of the support member 8.

  A first ventilation port 9 a and a second ventilation port 9 b are provided in the support member 8, air is sucked from the upstream main surface 11 and the upstream end surface 12, and air is blown out from the downstream main surface 13 and the downstream end surface 14. As a result, air is smoothly sucked from the upper part of the heat exchanger 3 so that the wind speed at the upper part of the heat exchanger 3 is increased and the air blowing area is increased, so that the wind speed at the lower part of the heat exchanger 3 is decreased. The unevenness of the wind speed passing through the heat exchanger 3 can be reduced. The method of providing both the first ventilation port 9a and the second ventilation port 9b can alleviate the deviation of the wind speed compared to the case where only one of them is provided.

DESCRIPTION OF SYMBOLS 1 Case 2 Air suction inlet 3 Heat exchanger 4 Blower 5 Air blower outlets 6, 8 Support member 7 Conventional wind speed distribution 9a 1st ventilation hole 9b 2nd ventilation hole 10 Wind velocity distribution 11 Upstream main surface 12 Upstream end surface 13 Downstream main surface 14 Downstream end surface

Claims (7)

  In an air conditioner including a heat exchanger inclined with respect to an air suction port of a housing and a support member that covers the heat exchanger, an upstream end surface and an upstream main surface of the heat exchanger that are upstream of an air flow An air conditioner characterized by sucking in air.   The air conditioner according to claim 1, wherein air is blown out from a downstream end surface and a downstream main surface of the heat exchanger that is downstream of the airflow.   The air conditioner according to claim 1, wherein the support member includes a first ventilation port on the upstream end face.   The air conditioner according to claim 2, wherein the support member includes a first ventilation port on the upstream end surface and a second ventilation port on the downstream end surface.   In an air conditioner including a heat exchanger inclined with respect to an air suction port of a housing and a support member that covers the heat exchanger, a downstream end surface and a downstream main surface of the heat exchanger that are downstream of an air flow Air conditioner characterized by blowing air from   6. The air conditioner according to claim 5, wherein the support member includes a second ventilation port on the downstream end surface.   In any one of Claims 1 thru | or 6, It equips with the air blower, makes the said heat exchanger into the V shape opened toward the said air blower, and arrange | positions so that air may flow in order of the said air suction inlet, the said heat exchanger, and the said air blower. An air conditioner characterized by

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