JP2017172526A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which includes a Sirocco fan capable of switching divided flow contents of blowout air blown out from a diffuser.SOLUTION: An air conditioner includes a Sirocco fan having an impeller for blowing out air sucked from a rotary shaft direction in a radial direction and a casing for storing the impeller for allowing the air blown out from the impeller to revolve around the impeller and for blowing it to the outside from a diffuser. The diffuser includes a flow dividing plate for expanding the blowout direction of the blowout air blown out from the diffuser in a lateral direction. The casing of the Sirocco fan is constituted by: a casing body having a blowout port for blowing out air; and the diffuser including the flow dividing plate and mounted on the blowout port of the casing body in a replaceable manner.SELECTED DRAWING: Figure 2

Description

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

  As shown in FIG. 5, the indoor unit 200 of the duct type air conditioner is installed in a suspended state by a suspension bolt 500 between the building ceiling surface 300 and the indoor ceiling surface 400. This indoor unit 200 is connected to an outdoor unit (not shown) installed outside by a refrigerant pipe, a power supply line, and a control line, and a suction duct 600 is connected to an air suction port 212a of the casing 210 of the indoor unit 200. 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 blowout duct 700 is connected to a blowout grill 420 attached to the indoor ceiling surface 400.

  The casing 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 suction port 212a. , Left side plate 213, right side plate 214, top plate 215, and bottom plate 216. The suction duct 600 is attached to the duct attachment frame 212a, and the blowout duct 700 is attached to the duct attachment frame 211a.

  Inside the casing 210, a partition plate 217 forms a blower chamber 218 on the air inlet 212a side and a heat exchanger chamber 219 on the air outlet 211a side. Two sirocco fans 220 are arranged in parallel in the blower chamber 218, and heat formed by two heat exchanging portions combined in a square shape (see FIG. 5) in a side view in the heat exchanger chamber 219. An exchanger 230 is arranged.

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

  An upward flow dividing plate 223b for dividing the blown air is formed on both sides inside the lower surface portion 223a of the diffuser 223, and a downward flow dividing plate 223d for dividing the blown air is formed on both sides of the upper surface portion 223c. These flow dividing plates 223b and 223d are provided for improving the blowing efficiency and reducing 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 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, a sirocco fan that can adjust the lateral width of the air outlet of the casing has been proposed (Patent Document 1).

Japanese Patent Laid-Open No. 2002-161896

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

  The objective of this invention is providing the air conditioner provided with the sirocco fan which enabled it to adjust the blowing direction and intensity | strength of the blowing air which blows off from a diffuser.

  In order to achieve the above object, the invention according to claim 1 is directed to an impeller that blows out air sucked in from a rotation axis direction in a radial direction, and the air that contains the impeller and blows out from the impeller. In an air conditioner comprising a sirocco fan having a casing that circulates around the outside and blows out from the diffuser, the diffuser comprising a flow dividing plate that expands the blowing direction of the blowing air blown out from the diffuser in the lateral direction, The casing of the sirocco fan includes a casing main body having an air outlet for blowing out air, and a diffuser that includes the flow dividing plate and is 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 body has a horizontal direction of air blowing from the air outlet of the casing. A first diffuser provided with a first diverting plate to be widened, and a second diffuser plate provided with a second diverting plate that widens the blowing direction of the air blown from the blowout port of the casing body in a lateral direction larger than the first diffuser. 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, a first step facing the outside of the casing body is formed around the front end of the outlet of the casing body. And a second step portion is formed around the back end of the diffuser. The second step portion faces the inside of the diffuser and is coupled to the first step portion.

  According to a fourth aspect of the present invention, in the air conditioner according to the third aspect, the corner portion inside the casing main body of the first stepped portion is more than the corner portion inside the diffuser of the second stepped portion. It is characterized by protruding inward.

  According to the present invention, the casing of the sirocco fan is separated from the casing body and the diffuser, and the diffuser is attached to the casing body so as to be replaceable. 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 the casing main body of the sirocco fan of the Example of this invention. (A), (b) is a perspective view of the diffuser attached to the casing main body of FIG. 1 so that attachment or detachment is possible. It is attachment explanatory drawing to the air conditioner of the sirocco fan of FIG. It is an expanded sectional view of the arrow A part of FIG. It is attachment explanatory drawing 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 of the state which removed the top plate of the conventional indoor unit. It is a perspective view of the conventional sirocco fan.

  FIG. 1 shows a casing 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 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 assembly is performed using the mounting brackets 11 and 12. The first and second diffusers 20 and 30 are attached to the air outlet 13 of the casing body 10 in a replaceable manner.

  The upper casing 40 includes a left side plate 41 having a semicircular cutout portion 41a that becomes a part of the air intake port of the impeller, and a semicircular cutout portion 42a that also becomes a part of the air intake port 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 includes a left side plate 51 having a semicircular cutout portion 51a that becomes a part of an air intake port of an impeller, and a semicircular cutout portion 52a that becomes a part of an air intake port 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 attached to the rectangular air outlet 13 formed by the upper casing 40 and the lower casing 50 of the casing body 10 in a replaceable manner with the second diffuser 30. A part 22, a left side part 23, and a right side part 24.

  An upward flow dividing plate 25 is located on the portion of the lower surface portion 21 that is closer to the left side surface portion 23, and an upward flow dividing plate 26 is located on the portion of the lower surface portion 21 that is closer to the right side surface portion 24, while the upper surface portion 22 is closer to the left side surface portion 23. A downward flow dividing plate 27 and a downward flow dividing plate 28 are formed at portions of the upper surface portion 22 near the right side surface portion 24, respectively.

  The rear ends 25 a and 26 a of the flow dividing plates 25 and 26 extend to the rear end 21 a of the lower surface portion 21. Further, the rear ends of the flow dividing plates 27 and 28 also extend to the rear end 22a of the upper surface portion 22 in the same manner as the rear ends 25a and 26a of the flow dividing plates 25 and 26, although not shown.

  The second diffuser 30 also has a rectangular frame shape that can be exchanged with the first diffuser 20 at the air 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 located on the 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 located on the portion of the lower surface portion 31 that is closer to the right side surface portion 34, and the upper surface portion 32 is closer to the left side surface portion 33. A downward flow dividing plate 37 is formed at a portion of the upper surface portion 32 that is close to the right side surface portion 34, and a downward flow dividing plate 38 is formed.

  The rear ends 35 a and 36 a of the flow dividing plates 35 and 36 extend to the rear end 31 a of the lower surface portion 31. Further, the rear ends of the flow dividing plates 37 and 38 also extend to the rear end 32a of the upper surface portion 32 in the same manner as the rear ends 35a and 36a of the flow dividing plates 35 and 36, although not shown.

  In addition, the diverting plates 35 and 37 of the second diffuser 30 have a larger angle at which the front side inclines leftward in FIG. 2 than the diverting plates 25 and 27 of the first diffuser 20. For this reason, the amount of airflow blown in the left direction among the airflows blown from the back side to the near side in FIG. 2 is larger than that by the first diffuser 20, and the airflow is Since the flow is restricted by the flow dividing plates 35 and 37, the speed of the air flow is increased.

  Further, the diverting plates 36 and 38 of the second diffuser 30 have a larger angle at which the front side inclines in the right direction in FIG. 2 than the diverting plates 26 and 28 of the first diffuser 20. For this reason, the amount of the air flow blown in the right direction in the air flow blown from the back side to the near side in FIG. 2 is larger than that by the first diffuser 20, and the air flow is Since the 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 body 10 partitions the inside of the casing 210 with a partition plate 217 as shown in FIG. In the blower chamber 218 formed in this manner, the fan chamber 218 is disposed in a state of being fitted into the fan opening 217a of the partition plate 217. The first diffuser 20 or the second diffuser 30 is disposed in the heat exchanger chamber 219.

  As will be described later using reference numerals, an outward first step portion facing the outside of the air outlet 13 is formed around the front end of the air outlet 13 of the casing body 10, and the first diffuser 20 and the second diffuser 30 are An inward second step portion facing the inside of the air outlet 13 is formed around the rear end so as to be coupled to the step portion of the casing body 10. Therefore, by connecting the outward stepped portion of the casing body 10 and the inward stepped portion of the first diffuser 20 or the second diffuser 30 to each other, the diffuser 20 or 30 is connected to the outlet 11 of the casing body 10. Can be mounted accurately without shifting up, down, left and right.

  In FIG. 4, the connecting structure (portion indicated by 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 body 10 and the right side portion 24 of the first diffuser 20 is represented. Show. At the front end of the right side plate 42 of the casing body 10, an outward first step portion 42 b in which a notch portion 42 b 1 is formed outside the air outlet 13 is formed. In addition, an inward second step portion 24 a in which a notch portion 24 a 1 is formed inside the air outlet 13 is formed at the inner end of the right side surface portion 24 of the diffuser 20.

  Therefore, when the notch portion 42b1 of the stepped portion 42b and the notched portion 24b1 of the stepped portion 24b are aligned, the first stepped portion 42b is inside the air outlet 13 and the second stepped portion 24a is outside the air outlet 13. It is attached as follows. And the 1st level | step-difference part 42b and the 2nd level | step-difference part 24a are fixed with bis | screw B1, and it will be in a coupling | bonding state as shown in FIG.

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

  For this reason, the airflow of the blown air blown out from the blowout port 13 of the casing body 10 enters the mating surface C from the corner portion 42b2 of the right side surface portion 42 of the casing body 10 and the corner portion 24a2 of the first diffuser 20. It is possible to prevent the right side plate 42 of the casing body 10 and the right side surface portion 24 of the first diffuser 20 from being scattered outside. That is, the casing main body 10 and the first diffuser 20 are formed by resin molding, and at that time, the gap between the mating surfaces C may become large, but even in this case, the air blown through the mating surface C Can be prevented from leaking. As described above, since the second diffuser 30 is also formed with a stepped portion similar to the second stepped portion 24a of the first diffuser 10, the second diffuser 30 of the air outlet 13 of the casing body 10 is similar to the first diffuser. It is matched with 1 level | step-difference part 42b, and the leak of blowing air is prevented similarly.

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

  Therefore, when the lateral width of the heat exchanger 230 disposed in the heat exchanger chamber 219 of the indoor unit 200 is narrow, the first diffuser 20 having the flow dividing plates 25 to 28 with a small extent of the blown air spreading in the lateral direction is attached, When the lateral width of the heat exchanger 230 is wide, the second diffuser 30 having the diverter plates 35 to 38 having a large extent of the blown air spreading in the lateral direction is attached, so that the spread of the blown air of the sirocco fan 100 can be reduced. The width can be changed according to the width.

  In addition, in the Example demonstrated above, although 2 types of diffusers 20 and 30 were used, if 3 or more types are prepared, it can be made to respond | correspond to more types of heat exchangers.

DESCRIPTION OF SYMBOLS 100: Sirocco fan 10: Casing main body, 11, 12: Mounting bracket, 13: Air outlet 20: 1st diffuser, 21: Lower surface part, 22: Upper surface part, 23: Left side part, 24: Right side part, 24a: 2nd Stepped portion, 24a2: Corner portion, 25-28: Dividing plate 30: Second diffuser, 31: Lower surface portion, 32: Upper surface portion, 33: Left side portion, 34: Right side portion, 35-38: Dividing plate 40: Upper casing , 41: left side plate, 42: right side plate, 42b: first stepped portion, 42b2: corner portion, 43: top plate 50: lower casing, 51: left side plate, 52: right side plate, 53: bottom plate 60: impeller 200: Indoor unit 210: Case, 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 blows out the air sucked in from the rotation axis direction in a radial direction, and a casing that accommodates the impeller and circulates the air blown from the impeller around the impeller and blows out from the diffuser to the outside In an air conditioner comprising a fan, and comprising a flow dividing plate that expands a blowing direction of blown air blown out from the diffuser in a lateral direction,
The casing of the sirocco fan is composed of a casing main body having a blowout port for blowing out air, and a diffuser that includes the flow dividing plate and is exchangeably attached to the blowout port of the casing main body. Harmony machine. In the air conditioner according to claim 1,
The diffuser attached to the air outlet of the casing body includes a first diffuser provided with a first diverter plate that expands a blowing direction of air blown from the air outlet of the casing in a lateral direction, and the diffuser attached to the casing body. An air conditioner characterized in that it is one selected from the second diffuser provided with a second flow dividing plate that extends the blowing direction of the air blown out from the blower outlet in the lateral direction larger than the first diffuser. . In the air conditioner according to any one of claims 1 and 2,
A first step portion facing the outside of the casing body is formed around the front end of the air outlet of the casing body, and the first step is directed to the inside of the diffuser around the back end of the diffuser. The air conditioner characterized by the 2nd level | step-difference part couple | bonded with a part being formed. In the air conditioner according to claim 3,
The air conditioner characterized in that an inner corner portion of the casing body of the first step portion protrudes inward from an inner corner portion of the diffuser of the second step portion.

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