JP2015137822A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner including a heat exchanger which is disposed so as to surround a fan, the disposition part of which has wind-shielding effect, and which has versatility even with respect to change in the size of the air conditioner.SOLUTION: An air conditioner 10 includes: a housing 20 having an air suction port 21 and an air blowout port 22; a heat exchanger 30 disposed at a side of the air suction port 21 and having a fin 332 and a heat transfer tube 331 passing through the fin; and an air blowing fan 13 disposed at a side of the air blowout port 22 and under the lee of the heat exchanger 30. The heat exchanger 30 is disposed so that its upper part is declined to a side of the air blowing fan 13 in a cross-sectional view, and includes a plurality of heat exchanger units 33A, 33B with the same number of steps which are cut off at different positions 35A, 35B and disposed in a row direction so that lower ends 333 are lined up.

Description

  The present invention relates to an air conditioner, and more particularly to an air conditioner having a heat exchanger provided so as to surround a blower fan.

  In general, an air conditioner is provided with a heat exchanger in the vicinity of a blower fan, and the air sucked by the blower fan is passed through the heat exchanger to be cooled or heated and discharged into the room or the like. At that time, the heat exchanger is provided so as to surround the blower fan in an inverted V shape in a side view, but from the viewpoint of securing a desired heat exchange area while suppressing the influence on the size of the air conditioner. A structure in which heat exchangers provided on the side (inside the room) are arranged in a “<” shape is known. However, when arranged in a “<” shape, a gap is formed on the front side (inside the room) between the upper and lower heat exchangers, and air that is not heat-exchanged passes through this gap to blow fans. Will flow in toward.

  As a means for preventing such a situation, a wind shielding plate is provided in a gap generated when arranged in a “<” shape to prevent air that is not heat exchanged from passing (for example, patents) Document 1), a heat exchanger having a continuous curved shape so as not to cause a gap (for example, Patent Document 2) has been proposed.

  However, in the air conditioner described in Patent Document 1, since it is necessary to separately provide a wind shielding plate that closes the gap, an increase in manufacturing man-hours and an increase in cost are caused. Since the part is covered with the wind shield, there is a problem that the heat exchange efficiency is lowered. Moreover, in the air conditioner described in Patent Document 2, when heat exchangers are provided in a plurality of rows in the air conditioner with respect to the air flow direction, heat exchangers having different curvatures are prepared, Since it is necessary to prepare a heat exchanger with a curvature that can be stored each time it is mounted on a different air conditioner, there is a problem that it lacks versatility such as preparing a mold for each heat exchanger with a different curvature was there.

Japanese Patent No. 3150505 JP 2010-261638 A

  The present invention has been made to solve the above-described problems. The heat exchanger has a wind shielding effect, and the shape of the heat exchanger can be easily changed in accordance with the shape of the air conditioner. For the purpose.

(1) One aspect according to the present invention includes a housing having an air inlet and an air outlet, a heat exchanger disposed on the air inlet side and having a fin and a heat transfer tube passing through the fin, and an air outlet. And a blower fan disposed on the lee side of the heat exchanger, and the heat exchanger is disposed with the upper part inclined to the blower fan side in a cross-sectional view, cut at different positions, and aligned at the lower end. Thus, an air conditioner including a plurality of heat exchanger units having the same number of stages arranged in a row direction is provided.
(2) In the air conditioner described in (1) above, the heat exchanger unit disposed on the leeward side is the cut position of the heat exchanger unit disposed on the leeward side of the plurality of heat exchanger units. The position may be higher than the cut position.
(3) In the air conditioner described in (1) or (2) above, the plurality of heat exchanger units may have the same number of rows.

  In the present invention, the heat exchanger has a wind shielding effect, and the shape of the heat exchanger can be easily changed in accordance with the shape of the air conditioner.

1 is an overall perspective view of an air conditioner according to an embodiment of the present invention. It is sectional drawing of the II-II position in FIG. (A) is sectional drawing of two plate-shaped heat exchanger units before cut | disconnecting, (B) is sectional drawing of the heat exchanger unit cut | disconnected and arrange | positioned in "<" shape. It is sectional drawing which shows the heat exchanger unit cut | disconnected and piled up in the same cutting position.

  Hereinafter, an air conditioner according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an air conditioner 10 according to an embodiment of the present invention can be used by being attached to, for example, an indoor wall 11 or the like. In the following description, with the air conditioner 10 attached to the wall 11, the ceiling side is “upper” and the floor side is “lower”. Further, the description will be made assuming that the indoor side is “front” and the wall 11 side is “rear” with respect to the wall 11.

  As shown in FIG. 1 and FIG. 2, the air conditioner 10 has a housing 20 as an external part that covers the inside so that the inside of the air conditioner 10 cannot be seen. An open panel 24a is provided on the front surface. The open panel 24a is held at the lower part of the front cover 24 and slides forward and upward during operation to form an air inlet 21 (211) for sucking indoor air. As the air suction port 21, in addition to the front air suction port 211 provided in a louver shape on the front surface of the housing 20 and inside the open panel 24 a in this way, the upper side provided on the upper side of the housing 20. An air inlet 212 is provided. The front air inlet 211 and the upper air inlet 212 are provided with filters (not shown) that remove dust and the like in the air to be sucked. The open panel 24a improves the appearance of the air conditioner 10 by closing the air inlet 211 when stopped.

  The air outlet 22 is provided on the lower surface of the housing 20 and opens downward. The air outlet 22 is provided with an up-and-down air direction plate 23 that can be opened and closed up and down. The vertical wind direction plate 23 opens downward during operation, and the vertical wind direction can be adjusted. The vertical wind direction plate 23 is closed when the operation is stopped. In addition, left and right wind direction plates (not shown) that can rotate in the left and right directions are provided, and the wind direction in the left and right directions can be adjusted. The housing 20 has an open rear side surface and is attached to the wall 11 via a mounting plate 12 that is a rectangular metal plate.

  As shown in FIG. 2, a cross-flow type blower fan 13 is disposed in the central portion of the housing 20. A heat exchanger 30 is arranged above the blower fan 13 so as to surround the blower fan. The heat exchanger 30 includes a front heat exchanger 31 and a rear heat exchanger 32. The front heat exchanger 31 and the rear heat exchanger 32 are arranged so that the upper part is close and the lower part is separated, and are arranged in a so-called inverted V shape.

  Therefore, when the blower fan 13 rotates and sucks outside air, the outside air flows from the front air inlet 211 and the upper air inlet 212 of the housing 20 (see arrows A1, A2, and A3 in FIG. 2), and the front heat exchanger. 31 passes through the rear heat exchanger 32 and exchanges heat with the refrigerant, and is discharged from the air outlet 22 into the room (see arrows B1 and B2 in FIG. 2). In addition, the dew pan 14 which receives the condensed water dripped from them is provided below the front heat exchanger 31 and the rear heat exchanger 32.

  The front heat exchanger 31 is a heat exchanger in which a front upper heat exchanger 311 and a front lower heat exchanger 312 are arranged in a “<” shape so as to be compact and improve heat exchange efficiency. The unit 33 is formed by overlapping a plurality (two in this case). The plurality of heat exchanger units 33A and 33B will be described later. In addition, although the other heat exchanger unit 34 is provided in the outer side of the heat exchanger unit 33 here, this shows the example provided in order to increase the area of a heat exchanger, Is optional.

  Here, the arrangement of the front upper heat exchanger 311 and the front lower heat exchanger 312 constituting the heat exchanger unit 33 will be described. The front upper heat exchanger 311 is disposed above the front lower heat exchanger 312. The lower part of the front upper heat exchanger 311 and the upper part of the front lower heat exchanger 312 are arranged close to each other. Moreover, it arrange | positions so that the upper part of the front side upper heat exchanger 311 may incline to the air blower side. The above-described dew tray 14 is disposed below the front lower heat exchanger 312.

  The heat exchanger unit 33 is a so-called fin tube type heat exchanger. Here, fins 332 provided with two rows of zigzag holes for heat transfer tubes (not shown) are stacked and arranged at a predetermined interval. ing. The heat transfer tube 331 is attached through the hole for the heat transfer tube. The heat transfer tube 331 is connected to one end of the heat exchanger unit 33 by a connecting tube (not shown). The refrigerant flows through the heat transfer tube hole. At this time, if the surface area of the heat exchanger unit 33 is large, the amount of heat exchange becomes large. However, if the surface area is increased by increasing the number of fins 332 by increasing the interval at which the fins 332 are stacked, the resistance to air flow is reduced. It gets bigger and the air flow gets worse.

  Next, a case where a plurality of heat exchanger units 33A and 33B are provided on the windward side and the leeward side as the heat exchanger 33 will be described with reference to FIGS. 3 (a) and 3 (B). Here, as shown in FIG. 3 (A), two identical heat exchanger units 33A and 33B are used, and the heat exchanger units 33A and 33B arranged in a “<” shape are arranged on the leeward side and leeward side. And the heat exchanger 30 having four rows of heat transfer tubes arranged respectively. Although the heat exchanger units 33A and 33B having the same shape of the fins 332, the number of stages and the number of rows of the heat transfer tubes 331 are used, the present invention is not limited to this.

  First, as shown to FIG. 3 (A), in the same heat exchanger unit 33A, 33B, each is cut | disconnected by the cutting lines 35A, 35B. The positions of the cutting line 35A and the cutting line 35B are provided at different positions on the indoor front side. Next, as shown in FIG. 3B, the heat exchanger units 33A and 33B are divided at the cutting lines 35A and 35B, arranged at a predetermined angle, and stacked. At this time, the lower ends 333 of the heat exchanger units 33A and 33B are aligned.

  As a result, the inner heat exchanger unit 33A and the outer heat exchanger unit 33B overlap each other, but the positions of the gaps 36A and 36B generated by dividing them into upper and lower portions and arranging them in a “<” shape are shifted. Become. As a result, the heat exchanger units 33A and 33B themselves form a wind shielding structure, and the amount of air passing through the gaps 36A and 36B can be reduced. Note that the heat exchanger units 33A and 33B may be cut and arranged without being cut.

  Here, a comparative example different from the gist of the present embodiment will be described with reference to FIG. When the heat exchanger units 33A and 33B are cut, a schematic diagram is shown in which the heat exchanger units 33A and 33B are cut at the same height and the heat exchanger units 33A and 33B are overlapped to form four rows. In this case, since there is nothing that blocks the gap 36 at the cutting position, a wind shielding effect cannot be obtained, which is not suitable.

  Next, the effect of the air conditioner 10 of this invention is demonstrated. By rotating the blower fan 13, air is taken in from an air inlet 21 provided in the housing 20 and discharged from an air outlet 22. On the way, the cooled or heated air is discharged by passing through the heat exchanger 30 provided so as to surround the blower fan 13 on the air inlet 21 side.

  The heat exchanger 30 includes a plurality of fins 332 arranged in a substantially inverted V shape and a plurality of heat transfer tubes 331 penetrating the fins 332. The heat exchanger 30 includes a fin 332 and a heat transfer tube 331 penetrating the fin 332, and includes a plurality of heat exchanger units 33A and 33B arranged in a “<” shape. Each heat exchanger unit 33A, 33B has the same number of heat transfer tubes 331, and is arranged in the row direction so that the cutting positions are different and the lower ends 333 are aligned on the front side of the room.

  For this reason, the positions of the gaps 36A and 36B generated by dividing the heat exchanger units 33A and 33B into upper and lower portions and arranging them in a "<" shape are arranged in the height direction in the adjacent heat exchanger units 33A and 33B. Can be different. Thereby, since the taken-in air passes through at least one of the heat exchanger units 33A and 33B, there is no air flowing without heat exchange, so there is no need to provide a windshield and the number of parts is reduced. Cost reduction. Further, by changing the cutting positions of the heat exchanger units 33A and 33B, the number of stages of the heat transfer tubes 331 of the front upper heat exchanger 311 and the rear lower heat exchanger 312 can be arbitrarily changed, and the heat exchange is repeated. It is possible to easily change the number of rows of the heat transfer tubes 331 by changing the number of the heater units 33A and 33B.

  In the air conditioner 10 of the present invention, the plurality of heat exchanger units 33A and 33B constituting the heat exchanger 30 have the same number of rows. For this reason, the number of rows of the heat transfer tubes 331 can be easily adjusted by processing and arranging the plate-like heat exchanger units 33 having the same number of rows and stages and changing the number of the stacked heat exchanger units 331.

  In the present invention, the heat exchanger has a plurality of heat exchanger units that are provided with fins and heat transfer tubes penetrating the fins and arranged in a “<” shape. Each heat exchanger unit has a plurality of stages of refrigerant tubes, and is arranged in the row direction so that the cutting positions are different and the lower ends are aligned on the indoor front side. This eliminates the need to provide a windshield because the gap generated by dividing each heat exchanger unit into upper and lower parts and arranging them in a “<” shape is closed by the adjacent heat exchanger unit. The cost can be reduced by reducing the cost. In addition, since the heat exchanger units have a certain number of stages, the arrangement shape can be changed by changing the cutting position using common parts, and the number of heat exchanger units to be stacked can be easily changed. An air conditioner having an effect that the number can be changed can be provided.

  The air conditioner of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made. For example, in the above-described embodiment, the heat exchanger 30 having four rows of heat transfer tubes 331 is configured by stacking two heat exchanger units 33 having two rows of heat transfer tubes 331, but the number of rows and the number of stages is limited. Not what you want. For example, the heat exchanger 30 having four rows of heat transfer tubes 331 can be configured by stacking four heat exchanger units having one row of heat transfer tubes 331 in the row direction.

DESCRIPTION OF SYMBOLS 10 ... Air conditioner 13 ... Blower fan 14 ... Dew tray 20 ... Housing 21 ... Air inlet 22 ... Air outlet 24 ... Front cover 24a ... Open panel 30 ... Heat exchanger 31 ... ... front heat exchanger 311 ... front upper heat exchanger 312 ... front lower heat exchanger 32 ... rear heat exchangers 33A, 33B ... heat exchanger unit (for front heat exchanger)
331 ... Heat transfer tube 332 ... Fin 333 ... Lower end (front heat exchanger)
34 …… Other heat exchanger units (front heat exchanger)
35A, 35B ... cutting line (cut position)
36A, 36B …… Gap

Claims (3)

A housing having an air inlet and an air outlet;
A finned tube heat exchanger disposed on the air inlet side;
A blower fan disposed on the lee of the heat exchanger,
The heat exchanger has a plurality of the same number of stages arranged in the row direction so that the upper part is inclined to the blower fan side in a cross-sectional view, is cut at a different height, and the lower ends are aligned. An air conditioner comprising a heat exchanger unit.   The cut position of the heat exchanger unit arranged on the leeward side of the plurality of heat exchanger units is higher than the cut position of the heat exchanger unit arranged on the leeward side. The air conditioner according to claim 1. The air conditioner according to claim 1 or 2, wherein the plurality of heat exchanger units have the same number of rows.

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