JP6060705B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner, and more particularly to a fan guard structure that prevents a finger from entering an indoor unit.

  2. Description of the Related Art Conventionally, an air conditioner is known in which a fan guard is provided at an air outlet in order to prevent fingers from entering the indoor unit from the air outlet of the indoor unit (see, for example, Patent Document 1). . In the air conditioner described in Patent Document 1, upper and lower air deflected up and down from the air outlet to the air outlet that is provided in the lower front of the indoor unit casing and is formed in a rectangular shape that is long in the left-right direction. It is equipped with a wind direction plate and a left and right wind direction plate that deflects left and right, a left and right wind direction plate on the upstream side (inside the indoor unit) of the air outlet, and a vertical wind direction plate on the downstream side (indoor side) of the air outlet, Each is arranged. And the fan guard is arrange | positioned between the left-right wind direction board and the up-down wind direction board.

  The fan guard, for example, is formed in a lattice shape by welding a plurality of vertical bars made of iron wire with a thickness of about 1 mm and a horizontal bar, and the interval between adjacent horizontal bars is set to a dimension that does not allow human fingers to enter. ing. Also, the vertical rail is not contacted with the right and left wind direction plates, and in order to ensure a vertical rotation range of the upper and lower wind direction plates, multiple times so as to protrude toward the downstream side of the air outlet (patent document) 1 is bent twice).

JP-A-10-132318

  When the air conditioner is performing a cooling operation, the fan guard may be cooled by the cooling air blown from the air outlet and condensation may occur in the fan guard, particularly corresponding to the left and right ends of the air outlet. In the fan guard, there is a possibility that the amount of condensed water generated increases due to the small amount of air blown out from the air outlet. When the fan guard is bent so as to protrude toward the downstream side of the air outlet as in the air conditioner described in Patent Document 1, a large amount of dew condensation water generated at the left and right ends of the fan guard is There is a risk that water will accumulate in the bent part of the crosspiece and drop into the up-and-down wind direction plate and drop through the up-and-down wind direction plate into the room or directly into the room.

  The present invention solves the above-described problems, and an object of the present invention is to provide an air conditioner that can suppress dew condensation water generated by a fan guard provided in an indoor unit from falling into the room.

  The present invention solves the above-described problem, and the air conditioner of the present invention has a suction port on the top surface of the indoor unit housing and a blower outlet at the lower front portion of the indoor unit housing, Arranged in the ventilation path connecting the air outlet, and provided with a blower fan for sucking room air from the air inlet and blowing it out from the air outlet, the air blown out from the air outlet in the left-right direction The left and right wind direction plates are arranged between the left and right wind direction plates, the upper and lower wind direction plates that are arranged downstream of the left and right wind direction plates and deflect the air blown out from the outlet in the vertical direction, and the left and right wind direction plates. A fan guard having a bent portion formed so as to protrude toward the downstream side of the air outlet corresponding to the shape of the plate is provided. And a fan guard is provided with the flat part formed in the both ends of a longitudinal direction, and the lower end part of a flat part is connected to the lower end part of a ventilation path.

  In the air conditioner of the present invention, both end portions in the longitudinal direction of the fan guard are flat portions, the bent portion is disposed on the downstream side of the outlet from the flat portion, and the lower end portion of the flat portion is the air passage. Since it is attached to the lower end, the generated dew condensation water drops on the top and bottom wind direction plates at both ends in the longitudinal direction of the fan guard where the generation amount of dew condensation water increases. It flows to the lower end of the ventilation path. Therefore, it can suppress that the dew condensation water which generate | occur | produced in the both ends of the longitudinal direction of a fan guard dripped at the room | chamber interior in which the indoor unit was installed.

It is an appearance perspective view of an indoor unit of an air conditioner in an embodiment of the present invention. It is sectional drawing of the indoor unit of the air conditioner in embodiment of this invention, (A) is XX sectional drawing in FIG. 1, (B) is YY sectional drawing in FIG. It is an appearance perspective view of a fan guard in an embodiment of the present invention.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As an embodiment, an indoor unit of an air conditioner installed on a wall surface inside a house will be described as an example. The present invention is not limited to the following embodiments, and can be variously modified without departing from the gist of the present invention.

  FIG. 1 is an external perspective view of an indoor unit 1 of an air conditioner according to the present invention. FIG. 2 is a cross-sectional view of the indoor unit 1. The indoor unit 1 has an indoor unit housing 10 that is a main body housing having a horizontally long and substantially rectangular parallelepiped shape. A front panel 11 is provided on the front surface of the indoor unit housing 10 so as to be formed in a substantially square shape using a resin material so as to cover the front surface of the indoor unit housing 10 and to form a design surface of the indoor unit 1. It has been.

  The left and right side surfaces of the indoor unit housing 10 are formed by a right side panel 12 and a left side panel 13. Each of the right side panel 12 and the left side panel 13 is formed into a curved surface having a predetermined curvature using a resin material, and has a bilaterally symmetric shape.

  The top surface of the indoor unit housing 10 is provided with a suction port 14 for taking air into the indoor unit 1, and a suction grille 14 a formed in a lattice shape with a resin material so as to cover the suction port 14. Is provided. A blower outlet 15 is provided below the front panel 11 for blowing out air that has been heat-exchanged with the refrigerant in the indoor unit 1 into the room.

  As shown in FIG. 2, a blower fan 21 for sucking room air from the suction port and blowing it out from the blower port 15 is provided in the ventilation path 20 that connects the suction port 14 covered with the suction grille 14 a and the blower port 15. Also, a heat exchanger 22 having an inverted V shape is disposed above the blower fan 21. The blower fan 21 and the heat exchanger 22 are fixed to a base 16 for attaching the indoor unit 1 to a wall surface.

  Moreover, in order to remove dust contained in the air taken into the indoor unit 1 on the upstream side of the heat exchanger 22 in the ventilation path 20 (between the heat exchanger 22 and the front panel 11 and the suction grille 14a). The filter 18 is arranged.

  The blower outlet 15 is formed by the lower part of the base 16 and the lower surface of the casing 17 attached to the front panel 2. The blower outlet 15 is a first that deflects the air blown from the blower outlet 15 in the vertical direction. An up / down wind direction plate 24 and a second up / down wind direction plate 25 arranged below the first up / down wind direction plate 24 are provided. Further, as shown in FIG. 2B, the air outlet 15 is located upstream of the air outlet 15 (inside the indoor unit housing 10) as viewed from the first vertical air direction plate 24 and the second vertical air direction plate 25. Left and right wind direction plates 23 for deflecting the air blown from the left and right are provided. The left and right wind direction plates 23, the first vertical wind direction plate 24, and the second vertical wind direction plate 25 are each formed of a resin material. Further, a sealing material 19 that is formed of felt or the like and absorbs condensed water generated in the ventilation path 20 is disposed between the lower end portion of the base 16 and the second up-and-down air direction plate 25.

  As shown in FIGS. 1 and 2, a fan guard 30 is disposed between the left and right wind direction plates 23, the first vertical wind direction plate 24 and the second vertical wind direction plate 25. As shown in FIG. 3, the fan guard 30 includes 18 vertical bars 31 and six horizontal bars 32.

  The vertical bar 31 includes three vertical bars 31a, two vertical bars 31b, and thirteen vertical bars 31c. The vertical beam 31b is formed in a linear shape, and the vertical beam 31a and the vertical beam 31c have a bent portion 35 that is bent at a predetermined angle. As shown in FIG. 2 (B), the bent portion 35 is convex toward the downstream side of the air outlet 15 when the fan guard 30 is attached to the air outlet 15, and the front end shape of the left and right wind direction plate 23 is The bent portion 35 is disposed on the downstream side of the mounting portion 34 described later.

  The upper ends of the vertical bars 31a and 31b have hook portions 33 that are bent into a crank shape. The hook portion 33 is inserted into a not-shown engagement hole provided on the lower surface of the casing 17 when the fan guard 30 is attached to the air outlet 15.

The lower end portion of the vertical beam 31b is an attachment portion 34 which is processed to be a round hole having a predetermined inner diameter by bending a tip to form a ring. The attachment portion 34 is provided to screw the fan guard 30 to the lower end portion of the base 16 when the fan guard 30 is attached to the air outlet 15, and the inner diameter dimension of the round hole is a dimension corresponding to the screw diameter.
In addition, the height dimension of the vertical beam 31a and the vertical beam 31b excluding the hook part 33 and the attachment part 34, and the height dimension of the vertical beam 31c are the height dimensions corresponding to the vertical dimension of the air outlet 15. It is said that.

The six horizontal rails 32 are bent at both ends into a crank shape, and the tip portion is a flat portion 36 having a linear shape. In the horizontal rail 32, the width dimension after the formation of the flat portion 36 is a width dimension corresponding to the dimension in the left-right direction of the air outlet 15.
The vertical beam 31 and the horizontal beam 32 described above are formed using iron wires having a predetermined thickness (for example, 1 mm).

  The fan guard 30 is formed by the following procedure. First, the vertical beam 31a and the vertical beam 31c are arranged so as to be parallel to each other at a predetermined position using a jig or the like, and then the horizontal beam 32 is arranged so as to be parallel to each other at a predetermined size interval and It arrange | positions so that it may cross | intersect 31a and the vertical beam 31c, and the horizontal beam 32, the vertical beam 31a, and the vertical beam 31c are welded. At this time, the predetermined dimension interval is a dimension that does not allow human fingers to enter. Next, the left and right ends of the horizontal rail 32 are bent into a crank shape to form a flat portion 36. At this time, bending is performed so that the flat portion 36 of each crosspiece 32 is located on the same plane. Next, the end of the flat part 36 and the vertical rail 31b are welded. Finally, the fan guard 30 is completed by plating or painting the fan guard 30 that has been welded.

  Next, the attachment of the fan guard 30 to the indoor unit 1 will be described with reference to FIG. As described above, the fan guard 30 is disposed between the left and right wind direction plates 23 and the first vertical wind direction plate 24 and the second vertical wind direction plate 25 at the air outlet 15.

  First, the hook portion 33 of the fan guard 30 is inserted into a not-shown engagement hole provided in the casing 17 above the blowout port 15. The engagement holes are arranged corresponding to the positions of the hook portions 33. Next, the mounting portion 34 of the fan guard 30 is screwed to the lower end portion of the base 16 that is the lower end portion of the ventilation path 20. As shown in FIG. 2B, the screwing position is such that the fan guard 30 does not hit the left and right wind direction plates 23 when the fan guard 30 is attached, and the first up and down wind direction plates 24 and 2 It is determined so as not to interfere with the rotation of the vertical wind direction plate 25.

  Next, the effect of the fan guard 30 in this embodiment will be described with reference to FIGS. 1 to 3. When the indoor unit 1 starts operation, the blower fan 21 is driven and indoor air is taken into the indoor unit 1 from the suction port 14. The taken-in air exchanges heat with the refrigerant in the heat exchanger 22, and the air direction is deflected in the left-right direction or the up-down direction by the left / right wind direction plate 23, the first up / down wind direction plate 24 and the second up / down wind direction plate 25. Is blown out into the room.

  When the indoor unit 1 is performing a cooling operation, air that is cooled by exchanging heat with the refrigerant in the heat exchanger 22 is blown out from the outlet 15. At this time, the fan guard 30 is cooled by the blown-out cooling air, and there is a possibility that condensation occurs when the indoor air comes into contact with the cooled fan guard 30.

  On the other hand, the amount of air blown out from the blowout port 15 is not uniform in each part of the blowout port 15, and the amount of air blown out from the left and right ends is smaller than the amount of air blown out from the center portion. The flow velocity of the air blown out from the air becomes slower than the flow velocity of the air blown out from the central portion. Thereby, the left and right end portions of the fan guard 30 have a larger amount of indoor air in contact than the vicinity of the central portion.

  Therefore, the amount of condensed water generated in the fan guard 30 is larger at the left and right end portions where the air flow rate is slower than in the central portion where the air flow rate is fast. At this time, if the shape of the left and right ends of the fan guard 30 is the same shape as the central portion, the dew condensation water generated at the left and right ends of the fan guard 30 accumulates in the bent portion 35 and becomes water droplets. There is a risk of dropping onto the up / down wind direction plate 25 and dropping into the room along the second up / down wind direction plate 25.

  In contrast, as shown in FIGS. 2A and 3, the portions corresponding to the left and right end portions of the air outlet 15 where the air flow rate in the fan guard 30 of the present embodiment becomes slow are flat portions 36. The vertical rail 31b welded to the flat portion 36 has a linear shape. As a result, the left and right end portions of the fan guard 30 do not have a portion that protrudes downstream from the lower end portion (mounting portion 34) of the base 16 like the bent portion 35, and there is no portion where the generated condensed water accumulates. Condensation water is difficult to form large droplets. The generated condensed water flows along the vertical rail 31 b to the lower end portion (attachment portion 34) of the base 16, and reaches the sealing material 19 disposed between the lower end portion of the base 16 and the second vertical airflow direction plate 25. Absorbed. Therefore, it is possible to suppress the dew condensation water generated at the left and right ends of the fan guard 30 from dropping onto the second vertical wind direction plate 25 and dropping into the room through the second vertical wind direction plate 25.

  As described above, in the air conditioner of the present invention, the flat portions 36 are provided at both ends in the longitudinal direction of the fan guard 30, and the bent portion 35 is disposed downstream of the air outlet 15 from the flat portion 36. In addition, since the attachment portion 34 provided at the lower end portion of the flat portion 36 is attached to the lower end portion of the base 16 that is the lower end portion of the ventilation path 20, the length of the fan guard 30 in which the amount of condensed water generated increases. At both ends in the direction, the generated condensed water drops on the up-and-down wind direction plate or flows directly to the lower end portion of the base 16 through the vertical rail 31b connected to the flat portion 16 without dropping into the room. Therefore, it can suppress that the dew condensation water which generate | occur | produced in the both ends of the longitudinal direction of the fan guard 30 is dripped at the room | chamber interior in which the indoor unit 1 was installed.

DESCRIPTION OF SYMBOLS 1 Indoor unit 10 Indoor unit housing | casing 14 Suction grill 15 Outlet 16 Base 17 Casing 19 Sealing material 20 Ventilation path 21 Blower fan 23 Left-right wind direction plate 24 1st up-down wind direction plate 25 2nd up-down wind direction plate 30 Fan guard 31, 31a, 31b, 31c Vertical beam 32 Horizontal beam 33 Hook part 34 Mounting part 35 Bending part 36 Flat part

Claims (1)

Having a suction port on the top surface of the indoor unit housing and a blower outlet at the lower front of the indoor unit housing;
An air conditioner that is disposed in a ventilation path that connects the suction port and the air outlet, and includes a blower fan that sucks room air from the air inlet and blows it out from the air outlet,
The air outlet includes a left and right wind direction plate that deflects air blown from the air outlet in the left-right direction, and an upper and lower direction that is arranged downstream of the left and right wind direction plate and deflects air blown from the air outlet in the vertical direction. A fan guard having a bent portion formed between the wind direction plate and the left and right wind direction plates and the upper and lower wind direction plates so as to protrude toward the downstream side of the air outlet corresponding to the shape of the left and right wind direction plates; Is provided,
The fan guard includes flat portions formed at both ends in the longitudinal direction, and a lower end portion of the flat portion is connected to a lower end portion of the ventilation path.

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