JP2010121826A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of preventing water splash when dew condensation is generated on a wind shielding plate installed between front-face side heat exchangers and a back-face side heat exchanger while making attachment of a heat insulating member to the wind shielding plate unnecessary. <P>SOLUTION: The air conditioner 1 is arranged with an indoor heat exchanger 17 and a ventilation fan 18. In the indoor heat exchanger 17, the front-face side heat exchangers 17A, 17B, 17C and the back-face side heat exchanger 17D are arranged inside a casing 2 to form an approximately Λ shaped cross section, and a clearance between the upper end parts is provided with the wind shielding plate 24. The wind shielding plate 24 has an inclination surface 27A inclined downward to either the front-face side heat exchanger 17C side or the back-face side heat exchanger 17D side. A drainage hole 28 for discharging dew condensation water is provided at the lowest part of the inclination surface 27A to contact either the heat exchanger 17C or the heat exchanger 17D. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner in which an indoor heat exchanger divided into a front-side heat exchanger and a back-side heat exchanger is arranged in a substantially Λ shape in a housing.

  In an indoor unit of an air conditioner, in order to secure the heat transfer area of the indoor heat exchanger, the indoor heat exchanger is divided into at least a front side heat exchanger and a back side heat exchanger, and both heat exchangers are placed on the front side. In addition, indoor units having a configuration in a substantially Λ shape inside a housing having a suction port on the upper surface and a blower port on the lower front surface are widely known. Further, an indoor unit having a configuration in which the front-side heat exchanger is further divided into a plurality of heat exchangers and bent into a U-shape is also known.

  In the indoor unit of the air conditioner configured as described above, the front side heat exchanger and the rear side heat exchanger have a predetermined gap between the upper end portions of both heat exchangers due to the positional relationship and the like. There is a configuration arranged in the above. In this case, a wind shielding plate is installed in the gap so that air does not flow through the indoor heat exchanger from the gap between the front heat exchanger and the rear heat exchanger ( For example, see Patent Documents 1, 2, and 3).

Japanese Patent No. 3854400 JP 2001-248855 A JP 2007-40544 A

  By the way, in the indoor unit configured as described above, during cooling operation, condensed water may be generated on the surfaces of the wind shielding plates provided at the upper ends of the front side heat exchanger and the rear side heat exchanger. This condensed water grows as water droplets and may stay on the wind shielding plate and scatter in the cold air, which is accompanied by the cold air and jumps out into the room. It was one. On the other hand, in order to prevent this water splash, measures such as sticking a heat insulating material to the surface of the wind shielding plate have been taken, but the amount of heat insulating material used is increased and its attaching work is required. As a result, productivity was lowered and the cost was high.

  The present invention has been made in view of such circumstances, and prevents water splashing at the time of dew condensation on the windshield installed between the front side heat exchanger and the rear side heat exchanger. In addition, an object of the present invention is to provide an air conditioner that can eliminate the need for attaching a heat insulating material to a windshield.

In order to solve the above problems, the air conditioner of the present invention employs the following means.
That is, in the air conditioner according to the present invention, the front side heat exchanger and the back side heat exchanger are approximately Λ-shaped inside the housing in which the front and upper surfaces are provided with suction ports and the lower part of the front surface is provided with outlets. In the air conditioner in which the indoor heat exchanger and the blower fan in which the wind shield plate is provided in the gap between the upper end portions thereof are disposed, the wind shield plate is the front side heat exchanger Alternatively, it has an inclined surface inclined downward toward one side of the back side heat exchanger, and a drainage hole for discharging condensed water at the lowest part of the inclined surface is in contact with the one side heat exchanger. It is provided in.

  According to the present invention, the windshield plate provided in the gap between the front-side heat exchanger and the rear-side heat exchanger arranged in a substantially Λ shape is the front-side heat exchanger or the rear-side heat exchanger. Since the drainage hole for discharging condensed water is provided at the lowest part of the inclined surface so as to be in contact with the one side heat exchanger, it is temporarily blocked. Even if dew condensation water is generated on the surface of the wind plate, etc., it is quickly guided to the drainage hole along the inclined surface, and is discharged from the drainage hole to the surface of the one side heat exchanger with which it is in contact. The surface of the exchanger can flow down and be discharged into the lower drain pan. Therefore, it is possible to prevent a water splash phenomenon in which the dew condensation water on the wind shielding plate becomes water droplets and scatters in the cold wind and jumps out into the room. Moreover, since the heat insulating material affixed to a windshield as a measure against a water splash phenomenon can be omitted, it is possible to reduce the amount of heat insulating material used, to omit the affixing work, and to reduce the cost.

  Furthermore, the air conditioner of the present invention is characterized in that, in the air conditioner described above, the inclined surface of the wind shield is inclined downward toward the rear heat exchanger.

  According to the present invention, since the inclined surface of the wind shielding plate is inclined downward toward the rear heat exchanger, even if condensed water is generated on the surface of the wind shielding plate, the condensed water is It can guide | invade to the heat exchanger side of a back side rapidly and reliably along an inclined surface. Therefore, even if water droplets scatter from the windshield, it can be reliably guided to the back side in the housing, that is, the back side heat exchanger, so that the water droplets can be prevented from directly escaping to the indoor side. .

  Moreover, the air conditioner of the present invention is any one of the above-described air conditioners, wherein the drain holes are provided at a plurality of locations at predetermined intervals along the width direction of the wind shielding plate. .

  According to the present invention, the drainage holes are provided at a plurality of locations at predetermined intervals along the width direction of the windshield plate, so that even if dew condensation water is generated at any site in the width direction of the windshield plate, It can be led to the nearest drain hole and discharged quickly. Accordingly, it is possible to reliably prevent water droplets from being scattered due to the condensation water staying on the wind shielding plate.

  Moreover, the air conditioner of the present invention is characterized in that, in any of the air conditioners described above, the drain hole is a slit-shaped hole along the width direction of the wind shield.

  According to the present invention, since the drainage hole is a slit-shaped hole along the width direction of the windshield plate, the drainage hole is configured by a drainage hole that discharges condensed water from the windshield plate side to the heat exchanger on one side. It is possible to maximize the drainage flow path with a minimum area. Therefore, a necessary and sufficient drainage channel can be secured while sufficiently satisfying the wind shielding function.

  According to the present invention, even if dew condensation water is generated on the surface of the windshield, etc., the surface of the one-side heat exchanger in which it is promptly guided to the drainage hole along the inclined surface and is in contact with the drainage hole The condensed water on the windshield becomes water droplets and scatters into the cold wind, causing the water splash phenomenon that jumps out into the room because the surface of the heat exchanger can flow down and be discharged into the drain pan. Can be prevented. Moreover, since the heat insulating material affixed to a windshield as a measure against a water splash phenomenon can be omitted, it is possible to reduce the amount of heat insulating material used, to omit the affixing work, and to reduce the cost.

Embodiments according to the present invention will be described below with reference to the drawings.
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
FIG. 1 shows an external perspective view of a wall-mounted air conditioner according to an embodiment of the present invention, and FIG. 2 shows a longitudinal sectional view thereof.
An air conditioner (indoor unit) 1 includes a horizontally long rectangular parallelepiped casing 2. The housing 2 includes a base 3 that forms the back side of the housing 2, a front panel 4 that covers the front side of the base 3, and a suction panel 6 that covers the front opening 5 of the front panel 4. The blower grill 7 is disposed between the front surface and the lower surface of the front panel 4.

  The base 3 includes a back-side drain pan 8 that receives drain that flows down from a back-side heat exchanger 17D that constitutes an indoor heat exchanger 17 that will be described later, and a flow of air that is blown from a cross-flow fan (blower fan) 18 that will be described later. An air flow path wall 9 that forms a path, a pipe accommodating portion 11 that accommodates refrigerant pipes 10, and the like are integrally formed. A suction grill 12 is formed on the upper surface of the front panel 4, and a suction panel 6 is installed in front of the opening 5 on the front face so as to be openable and closable with the upper part as a fulcrum. Is open. Further, a blowout opening 14 is opened in the blowout grill 7 disposed between the front surface and the bottom surface of the front panel 4.

  Inside the housing 2, an air filter 15 and an air purification filter 16 are disposed along the front opening 5 of the front panel 4 including the suction port 13 and the suction grille 12. An exchanger 17 is provided. As shown in FIG. 2, the indoor heat exchanger 17 is divided into a plurality of front side heat exchangers 17 </ b> A to 17 </ b> C and a back side heat exchanger 17 </ b> D. And it is bent and arranged so that the cross section has a substantially Λ shape toward the back side. That is, the front-side heat exchangers 17A to 17C and the rear-side heat exchanger 17D of the indoor heat exchanger 17 are arranged so that the upper ends thereof are close to each other and the intervals gradually increase toward the lower end side. The so-called Λ-shaped arrangement is provided.

  In the space on the downstream side of the indoor heat exchanger 17, a cross-flow fan (blower fan) 18 having an elongated cylindrical shape is disposed so as to be rotatable around a horizontal axis. 3 is configured to be driven by a fan motor (not shown) disposed via 3. A stabilizer 19 integrally formed with the blowout grill 7 is disposed in front of the downstream side of the cross flow fan 18, and the blowout opening is formed by the stabilizer 18 and the air flow path wall 9 formed in the base 3. 14 is formed.

  A front-side drain pan 21 that receives drain flowing down from the heat exchangers 17 </ b> A to 17 </ b> C constituting the indoor heat exchanger 17 is integrally formed with the blow-out grill 7 together with the stabilizer 19. In addition, a plurality of vertical louvers (louvers) 22 that adjust the airflow direction of the temperature-controlled air blown out from the air outlet 14 in the left-right direction are rotatably disposed in the air-blowing grill 7. Two horizontal flaps (flaps) 23 that adjust the wind direction in the vertical direction are rotatably arranged.

  As described above, the indoor heat exchanger 17 is divided into a plurality of front-side heat exchangers 17A to 17C and a rear-side heat exchanger 17D, and has an approximately Λ shape from the lower front side to the upper and rear sides in the housing 2. However, it is arranged such that a predetermined gap is formed between the upper ends of the front side heat exchanger 17C and the rear side heat exchanger 17D. The gap is shielded by the wind shielding plate 24 so that the air does not bypass the indoor heat exchanger 17 and flow downstream.

  As shown in FIGS. 3 and 4, the wind shielding plate 24 has the same length as that of the indoor heat exchanger 17 in the width direction. Locking portions 25 and 26 for locking to the upper end portions of the heat exchanger 17C and the back side heat exchanger 17D are provided, and a connecting portion 27 that connects the locking portions 25 and 26 is provided. ing. The upper surface of the connecting portion 27 is an inclined surface 27A that is slightly inclined downward (for example, 3 to 7 degrees, preferably 5 degrees) toward the rear surface side heat exchanger 17D.

  Further, a drainage hole 28 for discharging condensed water condensed on the surface of the wind shielding plate 24 to the rear heat exchanger 17D side is provided at the lowest portion of the inclined surface 27A. A wind shielding plate 24 is formed so as to be in contact with the end face. The drain holes 28 are formed at a plurality of locations at predetermined intervals (almost equal intervals) along the width direction of the wind shield plate 24, and the drain holes 28 are respectively along the width direction of the wind shield plate 24. It is constituted by a slit-shaped hole having a predetermined length.

With the configuration described above, according to the present embodiment, the following operational effects can be obtained.
The air conditioner 1 sucks indoor air into the housing 2 via the suction grille 12 and the suction port 13 by rotating a cross flow fan (blower fan) 18. After the air sucked into the housing 2 is purified by the air filter 15 and the air purification filter 16, the indoor heat exchanger 17 comprising a plurality of front side heat exchangers 17A to 17C and a rear side heat exchanger 17D. And is cooled or heated by exchanging heat with the refrigerant through the indoor heat exchanger 17.

  The temperature-controlled air is energized by a cross flow fan (blower fan) 18 and blown out from the blowout port 14 through the blowout flow path 20 to be used for indoor air conditioning. The temperature-controlled air blown into the room is blown toward an arbitrary area with the wind direction adjusted by a vertical louver (louver) 22 and a horizontal flap (flap) 23 provided at the blow-out port 14. Yes. Here, when the indoor heat exchanger 17 functions as an evaporator and a cooling operation is performed, dew condensation may occur on the surface of the wind shielding plate 24 that is cooled through the indoor heat exchanger 17.

  However, in the present embodiment, the upper surface of the connecting portion 27 of the wind shielding plate 24 is the inclined surface 27A inclined downward toward the rear side heat exchanger 17D, and condensed water is discharged to the lowest part of the inclined surface 27A. The drainage hole 28 is formed so as to be in contact with the end face of the back side heat exchanger 17D. For this reason, even if dew condensation water is generated on the surface of the wind shielding plate 24 as described above, the dew condensation water is promptly and surely guided to the drain hole 28 along the inclined surface 27A, and from there. Can flow out to the surface of the back side heat exchanger 17D that is in contact with, and the surface of the back side heat exchanger 17D can flow down and be discharged into the drain pan 8.

  Accordingly, it is possible to prevent a water jumping phenomenon that the condensed water on the wind shielding plate 24 becomes water droplets and scatters in the cold wind and jumps into the room. In particular, since the condensed water is guided to the back side heat exchanger 17D side by the inclined surface 27A, even if water droplets scatter from the wind shielding plate 24, the water droplets can be reliably transferred to the back side in the housing 2. That is, since it can be guided to the back side heat exchanger 17D, it is possible to prevent water droplets from splashing directly into the indoor side. Moreover, since the heat insulating material affixed to the windshield 24 can be made unnecessary as a measure for preventing the water splash phenomenon, the amount of heat insulating material used can be reduced, the affixing work can be omitted, and the cost can be reduced. Can do.

  Furthermore, since the drain holes 28 are provided at a plurality of locations at predetermined intervals along the width direction of the wind shield plate 24, even if dew condensation water is generated at any portion in the width direction of the wind shield plate 24, It can be led to the drainage hole 28 and discharged quickly. Accordingly, it is possible to reliably prevent the water droplets from being scattered by the dew condensation water remaining on the wind shielding plate 24. Further, since the drain hole 28 is a slit-shaped hole along the width direction of the wind shield plate 24, the drain hole 28 is configured by the drain hole 28 for discharging condensed water from the wind shield plate 24 side to the back side heat exchanger 17D. It is possible to maximize the drainage flow path with a minimum area. Therefore, a necessary and sufficient drainage channel can be secured while sufficiently satisfying the wind shielding function.

  In addition, this invention is not limited to the invention concerning the said embodiment, In the range which does not deviate from the summary, it can change suitably. For example, in the above-described embodiment, the upper surface of the connecting portion 27 of the windshield plate 24 is the inclined surface 27A that is inclined downward toward the rear surface side heat exchanger 17D. It is good also as an inclined surface inclined toward the downward direction, and such embodiment shall also be included by this invention. However, in this case, when water droplets are scattered from the windshield plate 24, the water droplets are guided to the front heat exchanger 17C side, and there is a possibility that the water droplets may jump directly to the indoor side. It is desirable to incline toward the container 17D.

  Moreover, although the said embodiment demonstrated the example which divided | segmented the front side heat exchanger into the three heat exchangers 17A thru | or 17C among the indoor heat exchangers 17, the front side heat exchanger is one piece. Or you may comprise by two or four or more heat exchangers. Furthermore, in the above-described embodiment, an example in which a plurality of front-side heat exchangers are bent into a U shape as a whole has been described. However, a heat exchanger having a shape curved in a convex shape on the front side is arranged. It is also possible to have a configuration.

1 is an external perspective view of an air conditioner according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the air conditioner shown in FIG. It is the perspective view of the state which looked at the indoor heat exchanger of the air conditioner shown in FIG. 1 from diagonally upward. It is an expanded side view of the upper end part of the front surface side heat exchanger and back surface side heat exchanger of the indoor heat exchanger shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Case 5 Front opening 12 Suction grill 13 Suction inlet 14 Outlet 17 Indoor heat exchanger 17A, 17B, 17C Front side heat exchanger 17D Rear side heat exchanger 18 Cross flow fan (blower fan)
24 Windshield 27A Inclined surface 28 Drain hole

Claims (4)

The front side heat exchanger and the back side heat exchanger are arranged in a roughly Λ shape inside the housing that has a suction port on the front and top surfaces and a blowout port on the bottom front surface. In an air conditioner in which an indoor heat exchanger provided with a wind shield and a blower fan are arranged,
The wind shield plate has an inclined surface inclined downward toward one of the front side heat exchanger and the rear side heat exchanger, and discharges condensed water to the lowest part of the inclined surface. An air conditioner characterized in that a drain hole is provided in contact with the one side heat exchanger.   The air conditioner according to claim 1, wherein the inclined surface of the wind shield plate is inclined downward toward the back side heat exchanger.   The air conditioner according to claim 1 or 2, wherein the drain holes are provided at a plurality of locations at predetermined intervals along the width direction of the wind shielding plate. The air conditioner according to any one of claims 1 to 3, wherein the drain hole is a slit-shaped hole along a width direction of the wind shielding plate.

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