JP6648593B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner provided with a sirocco fan as a blower.

  As shown in FIG. 5, the indoor unit 200 of the duct-type air conditioner is suspended between the building ceiling surface 300 and the indoor ceiling surface 400 by the suspension bolts 500. The indoor unit 200 is connected to an outdoor unit (not shown) installed outdoors by a refrigerant pipe, a power line, and a control line. The indoor unit 200 has an air inlet 212 a of a housing 210 of the indoor unit 200 and a suction duct 600. One end is attached, and one end of the outlet duct 700 is attached to the air outlet 211a. The other end of the suction duct 600 is connected to a suction grill 410 attached to the indoor ceiling surface 400, and the other end of the outlet duct 700 is connected to an outlet grill 420 attached to the indoor ceiling surface 400.

  The housing 210 of the indoor unit 200 has a horizontally long rectangular parallelepiped shape, and as shown in FIGS. 6 and 7, a duct mounting frame 211 surrounding the front air outlet 211a and a duct mounting frame 212 surrounding the rear air inlet 212a. , A left side plate 213, a right side plate 214, a top plate 215, and a bottom plate 216. The suction duct 600 is attached to a duct attachment frame 212a, and the outlet duct 700 is attached to a duct attachment frame 211a.

  Further, inside the housing 210, a blower room 218 is formed on the side of the air inlet 212a and a heat exchanger room 219 is formed on the side of the air outlet 211a by a partition plate 217. In the blower room 218, two sirocco fans 220 are arranged in parallel, and in the heat exchanger room 219, the heat composed of two heat exchange units combined in a square shape (see FIG. 5) in a side view. An exchanger 230 is arranged.

  As shown in FIG. 8, the sirocco fan 220 circulates around the impeller 211 with an impeller 221 coupled to the rotation shaft 241 of the motor 240 and air blown from the impeller 221 and housed therein. And a casing 222 to be formed. A diffuser 223 is formed at the air outlet 222 a of the casing 222.

  On both sides inside the lower surface portion 223a of the diffuser 223, an upward distribution plate 223b for dividing the blown air is formed, and on both sides of the upper surface portion 223c, a downward distribution plate 223d for dividing the blown air is formed. These flow dividing plates 223b and 223d are provided for improving the blowing efficiency and reducing the blowing noise.

  By the way, the flow dividing plates 223b and 223d of the sirocco fan 220 are fixedly arranged. For this reason, the blowing direction and the strength of the blowing air blown out from the diffuser 223 are fixed, and when the type of the indoor unit 200 is different, another sirocco fan may be required.

  On the other hand, there has been proposed a sirocco fan capable of adjusting the lateral width of an outlet of a casing (Patent Document 1).

JP-A-2002-161896

  However, the sirocco fan described in Patent Literature 1 can only adjust the lateral width of the air outlet, and cannot adjust the blowing direction and strength of the blown air blown therefrom.

  An object of the present invention is to provide an air conditioner provided with a sirocco fan capable of adjusting the blowing direction and intensity of blown air blown out from a diffuser.

  In order to achieve the above object, the invention according to claim 1 is an impeller that blows air sucked in from a rotation axis direction in a radial direction, and the impeller that houses the impeller and blows air blown out from the impeller. An air conditioner comprising a sirocco fan having a casing that circulates around and blows out from the diffuser to the outside, wherein the diffuser includes a flow dividing plate that expands a blowing direction of blown air blown from the diffuser in a lateral direction. The casing of the sirocco fan is characterized by comprising a casing main body having an air outlet for blowing out air, and a diffuser including the flow dividing plate and exchangeably attached to the air outlet of the casing main body.

  According to a second aspect of the present invention, in the air conditioner according to the first aspect, the diffuser attached to the air outlet of the casing main body is configured such that a direction in which air blows from the air outlet of the casing is blown laterally. A first diffuser provided with a first diverting plate to be widened, and a second diffuser provided with a second diverting plate for expanding a blowing direction of air blown from the air outlet of the casing body more than the first diffuser in a lateral direction. One of the two diffusers is selected.

  According to a third aspect of the present invention, in the air conditioner according to any one of the first and second aspects, the first step facing the outside of the casing main body around the front end of the outlet of the casing main body. A second step portion facing the inside of the diffuser and coupled to the first step portion is formed around a rear end of the diffuser.

  The invention according to claim 4 is the air conditioner according to claim 3, wherein a corner of the first step portion inside the casing body is larger than a corner of the second step portion inside the diffuser. It is characterized by protruding inward.

  According to the present invention, since the casing of the sirocco fan is separated from the casing body and the diffuser, and the diffuser is replaceably attached to the casing body, the blowout of the blown air is performed after the replacement of the diffuser. The direction and strength can be adjusted, and it is possible to cope with a plurality of types of air conditioners.

It is a perspective view of a casing main part of a sirocco fan of an example of the present invention. (A), (b) is a perspective view of the diffuser detachably attached to the casing main body of FIG. FIG. 2 is an explanatory view for attaching the sirocco fan of FIG. 1 to an air conditioner. FIG. 4 is an enlarged sectional view of an arrow A part in FIG. 3. It is explanatory drawing of installation of the indoor unit of the conventional duct type air conditioner. It is a perspective view of the conventional indoor unit. It is a perspective view in the state where the top board of the conventional indoor unit was removed. It is a perspective view of the conventional sirocco fan.

  FIG. 1 shows a casing main body 10 of a casing of a sirocco fan 100 according to one embodiment of the present invention. The casing of the sirocco fan 100 includes the casing main body 10 shown in FIG. 1 and the first diffuser 20 or the second diffuser 30 shown in FIG. The casing body 10 has a spiral shape and accommodates the impeller in the same manner as in FIG. The casing body 10 is a combination of an upper casing 40 and a lower casing 50. The assembling is performed using the mounting hardware 11 and 12. The first and second diffusers 20 and 30 are exchangeably attached to the outlet 13 of the casing body 10.

  The upper casing 40 has a left side plate 41 having a semicircular notch 41a that becomes a part of the air intake of the impeller, and a semicircular notch 42a that also becomes a part of the air intake of the impeller. And a top surface plate 43 having an upper surface portion 43a and a curved back surface portion 43b. The top plate 43 connects the left side plate 41 and the right side plate 42.

  The lower casing 50 has a left side plate 51 having a semicircular notch 51a that becomes a part of an air inlet of an impeller, and a semicircular notch 52a that becomes a part of an air inlet of a similar impeller. , And a curved bottom plate 53. The curved bottom plate 53 connects the left side plate 51 and the right side plate 52.

  The first diffuser 20 has a rectangular frame shape that is exchangeably attached to the second diffuser 30 at a rectangular outlet 13 formed by the upper casing 40 and the lower casing 50 of the casing body 10. It has a part 22, a left side part 23, and a right side part 24.

  An upward distribution plate 25 is provided at a portion of the lower surface 21 that is closer to the left side surface 23, and an upward distribution plate 26 is provided at a portion of the lower surface 21 that is closer to the right surface 24. A downward distribution plate 27 is formed on a portion of the upper surface portion 22 that is closer to the right side surface portion 24, respectively.

  Further, the rear ends 25a, 26a of the flow dividing plates 25, 26 extend to the rear end 21a of the lower surface portion 21. Although not shown, the rear ends of the flow dividing plates 27 and 28 also extend to the rear end 22a of the upper surface portion 22, similarly to the rear ends 25a and 26a of the flow dividing plates 25 and 26.

  The second diffuser 30 also has a rectangular frame shape that can be exchangeably attached to the first diffuser 20 at the outlet 13 of the casing body 10, and has a lower surface portion 31, an upper surface portion 32, a left side surface portion 33, and a right side surface portion 34.

  An upward flow dividing plate 35 is provided at a portion of the lower surface portion 31 that is closer to the left side surface portion 33, and an upward flow dividing plate 36 is provided at a portion of the lower surface portion 31 that is closer to the right side surface portion 34, and is provided at a portion of the upper surface portion 32 that is closer to the left side surface portion 33. A downward distribution plate 37 is formed at a portion of the upper surface portion 32 that is closer to the right side surface portion 34, respectively.

  Further, the rear ends 35a, 36a of the flow dividing plates 35, 36 extend to the rear end 31a of the lower surface portion 31. Although not shown, the rear ends of the flow dividing plates 37 and 38 also extend to the rear end 32a of the upper surface portion 32, similarly to the rear ends 35a and 36a of the flow dividing plates 35 and 36.

  The diversion plates 35 and 37 of the second diffuser 30 have a larger angle to the left in the front direction in FIG. 2 than the diversion plates 25 and 27 of the first diffuser 20. For this reason, the amount of airflow blown to the left in the airflow blown from the back side to the front side in FIG. 2 is larger than in the case of the first diffuser 20, and the airflow is Since the air flow is restricted by the flow dividing plates 35 and 37, the speed of the air flow is increased.

  In addition, the flow dividing plates 36 and 38 of the second diffuser 30 are larger in angle to the right in the front side in FIG. 2 than the flow dividing plates 26 and 28 of the first diffuser 20 in FIG. For this reason, the amount of airflow blown to the right in the airflow blown from the back side to the front side in FIG. 2 is larger than that in the case of the first diffuser 20, and the airflow is Since the air flow is restricted by the flow dividing plates 36 and 38, the speed of the air flow is increased.

  In the sirocco fan 100 of the present embodiment in which the impeller 60 similar to the impeller 221 described in FIG. 8 is mounted, the casing main body 10 partitions the inside of the housing 210 with the partition plate 217 as shown in FIG. The partition 217 is disposed in the blower room 218 formed in such a manner as to be fitted into the fan opening 217 a of the partition plate 217. Further, the first diffuser 20 or the second diffuser 30 is disposed in the heat exchanger room 219.

  As will be described later using reference numerals, an outward first step portion facing the outside of the outlet 13 is formed around the front end of the outlet 13 of the casing body 10, and the first diffuser 20 and the second diffuser 30 Around the back end, an inward second step portion facing the inside of the air outlet 13 is formed so as to be coupled to the step portion of the casing body 10. Accordingly, by connecting the outward stepped portion of the casing main body 10 and the inward stepped portion of the first diffuser 20 or the second diffuser 30 to each other, the diffusers 20 or 30 are connected to the air outlet 11 of the casing main body 10. It can be mounted accurately without shifting vertically and horizontally.

  FIG. 4 illustrates a coupling structure (portion indicated by an arrow A in FIG. 3) of the portion of the air outlet 13 of the right side plate 42 of the upper casing 40 of the casing main body 10 and the right side portion 24 of the first diffuser 20. Show. At the front end of the right side plate 42 of the casing body 10, an outward first step portion 42b having a cutout portion 42b1 formed outside the outlet 13 is formed. Further, an inward second step portion 24 a in which a cutout portion 24 a 1 is formed inside the air outlet 13 is formed at a deep end of the right side surface portion 24 of the diffuser 20.

  Therefore, when the notch portion 42b1 of the step portion 42b is aligned with the notch portion 24b1 of the step portion 24b, the first step portion 42b is inside the outlet 13 and the second step portion 24a is outside the outlet 13. To be mounted. Then, by fixing the first step portion 42b and the second step portion 24a with the screw B1, a connection state as shown in FIG. 4 is obtained.

  At this time, in the coupled state, the inner corner 42b2 of the first step portion 42b of the right side plate 42 of the casing 10 is more inward than the inner corner 24a2 of the step 24a of the right side portion 24 of the first diffuser 20. At a distance L1. Further, as shown in FIG. 4, the mating surface C of the step portions 42b and 24a extends rightward in FIG. 4 from the side of the outlet 13 and then extends in the direction of the right side portion 42 (upward in FIG. 4). Further, it extends rightward in FIG. 4 and is bent twice in the opposite direction so as to reach the outside of the right side plate 42 and the right side portion 24.

  Therefore, the airflow of the blown air blown out from the outlet 13 of the casing main body 10 enters the mating surface C from the corner 42b2 of the right side surface 42 of the casing main body 10 and the corner 24a2 of the first diffuser 20. It can be prevented from dissipating to the outside of the right side plate 42 of the casing body 10 and the right side portion 24 of the first diffuser 20. That is, the casing body 10 and the first diffuser 20 are formed by resin molding. At this time, the gap between the mating surfaces C may be large. Can be prevented from leaking. As described above, since the second diffuser 30 is also formed with a step similar to the second step 24a of the first diffuser 10, the second diffuser 30 has the same shape as the first diffuser. It is matched with the one step portion 42b, and the leakage of the blown air is similarly prevented.

  As described above, in the present embodiment, the diffuser 20 is disposed on the heat exchanger room 219 side with respect to the air outlet 13 of the casing body 10 of the sirocco fan 100 fixedly disposed in the blower room 218 of the indoor unit 200. Or, 30 can be selectively attached, and can be replaced.

  Therefore, when the width of the heat exchanger 230 arranged in the heat exchanger room 219 of the indoor unit 200 is narrow, the first diffuser 20 having the flow dividing plates 25 to 28 in which the degree of the blown air spreads laterally is small, When the width of the heat exchanger 230 is wide, the spread of the air blown out from the sirocco fan 100 can be reduced by installing the second diffuser 30 having the flow dividing plates 35 to 38 in which the blown air spreads in the horizontal direction. Can be changed in accordance with the width of the.

  In the embodiment described above, two types of diffusers 20 and 30 are used. However, if three or more types are prepared, more types of heat exchangers can be used.

100: Sirocco fan 10: Casing body, 11, 12: Mounting bracket, 13: Blow outlet 20: First diffuser, 21: Lower surface, 22: Upper surface, 23: Left side, 24: Right side, 24a: Second Step portion, 24a2: corner portion, 25 to 28: flow dividing plate 30: second diffuser, 31: lower surface portion, 32: upper surface portion, 33: left side surface portion, 34: right side surface portion, 35 to 38: flow dividing plate 40: upper casing , 41: left side plate, 42: right side plate, 42b: first step portion, 42b2: corner, 43: top plate 50: lower casing, 51: left side plate, 52: right side plate, 53: bottom plate 60: impeller 200: Indoor unit 210: Housing, 217: Partition plate, 218: Blower room, 219: Heat exchanger room 220: Conventional sirocco fan 230: Heat exchanger

Claims (4)

A sirocco having an impeller that radially blows out the air taken in from the rotation axis direction, and a casing that accommodates the impeller and allows the air that is blown out of the impeller to circumvent the impeller and blow out the outside from the diffuser. An air conditioner including a fan, wherein the diffuser includes a flow dividing plate for expanding a blowing direction of blown air blown from the diffuser in a lateral direction.
The air of the sirocco fan, wherein the casing comprises a casing main body having a blow-off port for blowing air, and a diffuser including the flow dividing plate and exchangeably attached to the blow-out port of the casing main body. Harmony machine. The air conditioner according to claim 1,
A diffuser attached to the outlet of the casing main body is provided with a first diffuser provided with a first branch plate for expanding a blowing direction of air blown from the outlet of the casing in a lateral direction, and a diffuser of the casing main body. An air conditioner selected from among a second diffuser provided with a second flow dividing plate for expanding a blowing direction of air blown from an air outlet in a lateral direction more largely than the first diffuser. . The air conditioner according to any one of claims 1 or 2,
A first step portion facing the outside of the casing body is formed around a front end of the air outlet of the casing body, and around a back end of the diffuser, a first step portion facing the inside of the diffuser and facing the first step portion is formed. An air conditioner, wherein a second step portion coupled to the portion is formed. The air conditioner according to claim 3,
An air conditioner wherein an inner corner of the casing body of the first step portion projects more inward than an inner corner of the diffuser of the second step portion.

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