Air conditioner

Abstract

To provide an air conditioner capable of suppressing a decrease in air blowing performance by reducing a pressure loss during air blowing.SOLUTION: An air conditioner according to the present disclosure is an air conditioner that is attached to a wall surface in a room, conditions air taken in from a suction port, and sends out the conditioned air through a blowout port. The air conditioner includes: a cross-flow fan provided in a housing and having a plurality of blades arranged in a columnar shape; a stabilizer provided close to the blowout port of the cross-flow fan; a rear guider provided to face the stabilizer and forming an air passage in a space between the stabilizer and the rear guider; and right and left blades rotatably provided on a support shaft erected on the stabilizer, wherein an axial direction of the support shaft is provided in a direction perpendicular to the rear guider facing the support shaft at an erected position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioner. [Background technology]

[0002] Patent Document 1 discloses an air conditioner in which air drawn in through an air inlet is heat exchanged by a heat exchanger, and the heat-exchanged air is then discharged into the room through an air outlet. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-257372 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an air conditioner that can reduce pressure loss when blowing air and suppress a decrease in blowing performance. [Means for solving the problem]

[0005] The air conditioner disclosed herein is an air conditioner that is attached to a wall surface inside a room, conditions the air taken in through an intake port, and sends out the conditioned air through an outlet, and is equipped with a crossflow fan that is provided within a housing and consists of a plurality of blades arranged in a cylindrical shape, a stabilizer that is provided near the outlet of the crossflow fan, a rear guider that is provided opposite the stabilizer and forms an air passage in the space between the stabilizer, and left and right blades that are rotatably provided on a support shaft that is erected on the stabilizer, and the axial direction of the support shaft is set in a direction that is perpendicular to the rear guider that it faces when in the erected position. [Effects of the Invention]

[0006] The air conditioner of the present disclosure has support shafts for the left and right blades attached to the stabilizer, which reduces pressure loss during air blowing and prevents a decrease in blowing performance. Also, by providing the support shafts upright on the rear guider, the left and right blades do not block the main air flow, preventing a decrease in blowing performance in the left and right directions. [Brief explanation of the drawings]

[0007] [Figure 1] Cross-sectional view of the indoor unit according to the first embodiment [Figure 2] FIG. 1 shows a room in which an indoor unit according to a first embodiment is installed. [Figure 3] FIG. 10 is a diagram showing the wind speed in a room in the first embodiment. [Figure 4] FIG. 10 is a diagram showing the wind speed in a room in the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) At the time the inventors arrived at the idea of ​​the present disclosure, there was a technology in which the air direction was changed by attaching blades to the airflow path. However, the inventors discovered a problem with the conventional technology in that the blade attachment portion was located in a part of the airflow path where the air flow velocity was high, which increased pressure loss and could lead to a decrease in airflow performance. In order to solve this problem, the inventors came up with the subject matter of the present disclosure. Therefore, the present disclosure provides an air conditioner that can reduce air pressure loss and suppress a decrease in air blowing performance.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, in some cases, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or redundant explanation of substantially the same configuration may be omitted. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) [1-1.Configuration] FIG. 1 is a cross-sectional view of the indoor unit 1. As shown in FIG. The air conditioner of this embodiment is configured by connecting an outdoor unit (not shown) and an indoor unit 1 with piping (not shown), etc. Existing outdoor units and piping, etc. can be used.

[0011] The indoor unit 1 has a housing 10 equipped with an air inlet 11 and an air outlet 12. The air inlet 11 is provided in the upper part of the housing 10. The air outlet 12 is provided in the lower part of the housing 10.

[0012] The housing 10 includes therein a cross-flow fan 15, a heat exchanger 16, a rear guider 17, a stabilizer 18, an airflow direction plate 19, and a blade portion 20.

[0013] Crossflow fan 15 is driven to rotate by a motor (not shown). Crossflow fan 15 is disposed approximately horizontally, with the direction of its rotation axis aligned with the left-right direction of housing 10. Crossflow fan 15 has a cylindrically-arranged blade-like impeller 15a having a certain length. When crossflow fan 15 is rotated by the driving of the motor, air is sucked into housing 10 through air inlet 11, and the air inside housing 10 is blown out from air outlet 12.

[0014] The heat exchanger 16 is disposed so as to cover the front, upper, and rear portions of the cross flow fan 15 in a side view. In this embodiment, the heat exchanger 16 has a front heat exchanger 16a that slopes upward in front of the cross flow fan 15, and a rear heat exchanger 16b that slopes from the top to the rear of the cross flow fan 15. The heat exchanger 16 performs heating or cooling by exchanging heat with the indoor air drawn into the housing 10 .

[0015] The rear guider 17 is disposed so as to cover the rear and lower parts of the cross flow fan 15 in a side view, and is a member that curves and extends from between the rear heat exchanger 16b and the cross flow fan 15 to the vicinity of the air outlet 12. The rear guider 17 guides the air drawn in from the air inlet 11 by the operation of the cross flow fan 15 to the air outlet 12 .

[0016] The stabilizer 18 is provided below the front heat exchanger 16a and is disposed opposite the rear guider 17. The rear guider 17 and the stabilizer 18 are disposed opposite each other with the cross flow fan 15 sandwiched therebetween. The stabilizer 18 stabilizes the airflow inside the housing 10 and also guides the air drawn in from the air inlet 11 by the operation of the cross flow fan 15 to the air outlet 12.

[0017] The stabilizer 18 has a linear stabilizer flat portion 18a and an R-shaped stabilizer tongue portion (tongue portion) 18b in a side view of the housing 10. The stabilizer tongue portion 18b is formed to face the cross flow fan 15 and stabilizes the airflow caused by the cross flow fan 15. The stabilizer flat portion 18a extends from the stabilizer tongue portion 18b toward the outlet side, thereby forming a part of the ventilation passage 25.

[0018] The rear guider 17 and the stabilizer 18 form an air passage 25. That is, the air drawn into the housing 10 from the air inlet 11 can be guided to the air outlet 12.

[0019] An airflow direction vane 19 is disposed near the air outlet 12. The airflow direction vane 19 adjusts the vertical direction of the air blown out from the air outlet 12.

[0020] A blade portion 20 is formed on the stabilizer tongue portion 18b. A plurality of blade portions 20 are arranged along the left-right direction of the housing 10. The blade portion 20 includes a support shaft 21 attached to the stabilizer tongue portion 18b and rotatably supported thereon, and left and right blades 22 attached to the support shaft 21 and adjusting the left-right direction of the blown air. By forming the blade portion 20 in this manner, when the stabilizer 18 and the support shaft 21 are manufactured as an integrated part, the mold removal angle during manufacturing is widened, facilitating the removal process from the mold.

[0021] Left and right blades 22 are provided on support shaft 21. Left and right blades 22 are flat blades extending along ventilation passage 25. Left and right blades 22 rotate in conjunction with the rotation of support shaft 21, and adjust the left and right direction of the air blown out from air outlet 12.

[0022] The axial direction of the support shaft 21 is perpendicular to the rear guider 17 . In addition, in a side view of the housing 10, the sides 22e of the left and right blades 22 that face the rear guider 17 are formed substantially parallel to the surface of the rear guider 17. Furthermore, when the left and right blades 22 are divided into an upstream region 22a and a downstream region 22b of the ventilation passage 25 by a virtual axis A in the axial direction of the support shaft 21, in this embodiment, the area of ​​the downstream region 22b of the left and right blades 22 is formed to be larger than the area of ​​the upstream region 22a.

[0023] [1-2. Operation]

[0024] By the operation of the crossflow fan 15, air is drawn into the housing 10 through the air inlet 11 and passes through the heat exchanger 16 to be heat exchanged. The heat-exchanged air is guided along the rear guider 17 and stabilizer 18 to the air outlet 12. The air guided to the air outlet 12 is adjusted in the left-right and up-down directions by the air direction vane 19 and the blades 20, and is blown out in a predetermined direction.

[0025] At this time, the main stream of air inside the housing 10 flows toward the rear guider 17. That is, the flow velocity of the air inside the housing 10 and the air blown out is faster on the rear guider 17 side than on the stabilizer 18 side.

[0026] If the blade portion 20 were provided on the rear guider 17 side, the support shaft 21 would block the main flow of air, resulting in a loss of pressure and a decrease in blowing performance. However, in this embodiment, the support shaft 21 of the blade portion 20 is provided on the stabilizer 18 side, so that the support shaft 21 does not block the main flow of air. In other words, by providing the blade portion 20 on the stabilizer 18 side, it is possible to reduce the pressure loss during air blowing compared to when the blade portion 20 is provided on the rear guider 17 side, and it is possible to suppress a decrease in blowing performance.

[0027] FIG. 2 is a diagram showing a room 30 in which the indoor unit 1 is installed. The indoor unit 1 blows air in the direction of the arrow S1.

[0028] Fig. 3 is a diagram showing the wind speed in the room 30, and is a diagram showing the wind speed when a cross section 30a of the room 30 is cut at a position 3 / 4 of the way from the plane where the indoor unit 1 is installed, is viewed from the direction of arrow S2. Fig. 4 is a diagram showing the wind speed in the room 30, and is a diagram showing the wind speed when a cross section 30b of the room 30 is cut at the position of cross section IV-IV in Fig. 1, is viewed from the direction of arrow S3. 3 and 4(a) show the wind speed when the support shaft 21 is disposed perpendicular to the tangent line 17a of the rear guider 17. Fig. 3 and 4(b) show the wind speed when the support shaft 21 is disposed perpendicular to the stabilizer flat portion 18a.

[0029] In this embodiment, the support shaft 21 attached to the stabilizer 18 is provided in an upright position so as to be substantially perpendicular to the surface of the opposing rear guider 17. More specifically, the support shaft 21 is provided so that a virtual axis A extending in the axial direction from the support shaft 21 is substantially perpendicular to a tangent to the rear guider 17.

[0030] By providing support shaft 21 in this manner, peak position 31a of wind speed when support shaft 21 is provided perpendicular to tangent 17a of rear guider 17 moves in a direction away from indoor unit 1 compared to peak position 31b of wind speed when support shaft 21 is provided perpendicular to stabilizer flat surface 18a (see FIG. 3). In other words, by providing support shaft 21 perpendicular to tangent 17a of rear guider 17, left and right blades 22 are arranged substantially orthogonal to each other, which prevents blade portion 20 from blocking the main air flow and improves air blowing performance in the left and right directions.

[0031] In this embodiment, when viewed from the side of the housing 10, the edges 22e of the left and right blades 22 provided on the blade portion 20 on the rear guider 17 side are formed so as to be approximately parallel to the surface of the rear guider 17, thereby reducing the gap that occurs between the rear guider 17 and the left and right blades 22 and reducing pressure loss when blowing air, thereby preventing a decrease in blowing performance.

[0032] Furthermore, in this embodiment, the area of ​​the downstream region 22b of the left and right blades 22 is formed to be larger than the area of ​​the upstream region 22a, so that the left and right blades 22 can be positioned away from the periphery of the crossflow fan 15 where the wind speed is high, thereby reducing ventilation resistance and improving air blowing performance.

[0033] [1-3. Effects, etc.] Air conditioner 1 is attached to a wall surface inside a room, conditions the air taken in through intake port 11, and sends out the conditioned air through outlet port 12. Air conditioner 1 is equipped with a crossflow fan 15 provided within housing 10 and consisting of a plurality of blades arranged in a cylindrical shape, a stabilizer 18 provided near outlet port 12 for crossflow fan 15, a rear guider 17 provided opposite stabilizer 18 and forming an air passage 25 in the space between stabilizer 18, and left and right blades 22 rotatably provided on a support shaft 21 provided upright on stabilizer 18, the axial direction of support shaft 21 being set in a direction perpendicular to the opposing rear guider 17 when in the upright position. According to this, by attaching the support shaft 21 of the left and right blades 22 to the stabilizer 18 side, the left and right blades 22 do not block the main air flow, thereby reducing pressure loss during air blowing and suppressing a decrease in blowing performance. Also, by providing the support shaft 21 in an upright position on the rear guider 17, the left and right blades 22 do not block the main air flow, thereby suppressing a decrease in blowing performance in the left and right directions.

[0034] The stabilizer 18 has a stabilizer tongue 18b on the upstream side of the ventilation passage 25, the stabilizer tongue 18b bulging toward the cross flow fan 15, and the support shaft 21 is provided on the stabilizer tongue 18b. According to this, since the support shaft 21 is provided on the stabilizer tongue portion 18b, when the stabilizer 18 and the support shaft 21 are manufactured integrally, the step of removing the mold during manufacturing becomes easier.

[0035] The areas of the regions divided by the axial direction of support shaft 21 of left and right blades 22 are such that region 22b on the downstream side of ventilation passage 25 is larger than region 22a on the upstream side. This reduces the ventilation resistance and improves the airflow performance.

[0036] The sides of the left and right blades 22 facing the rear guider 17 are formed to be parallel to the surface of the rear guider 17. This makes it possible to reduce the gap between the rear guider 17 and the left and right blades 22, thereby reducing pressure loss during air blowing and preventing a decrease in blowing performance.

[0037] (Other embodiments) As described above, the above-mentioned first embodiment has been described as an example disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in the above-mentioned first embodiment to create new embodiments. Therefore, other embodiments will be exemplified below.

[0038] In the above-described embodiment, the vane portion 20 is provided on the stabilizer tongue portion 18b. However, the attachment position of the vane portion 20 is not limited to the stabilizer tongue portion 18b. In other words, the vane portion 20 may be provided on the stabilizer flat portion 18a.

[0039] In the above-described embodiment, the rear guider 17 is arc-shaped, and the support shaft 21 is disposed so as to be approximately perpendicular to the tangent line of the rear guider 17. However, the shape of the rear guider 17 is not limited to an arc-shape. For example, a portion of the rear guider 17 may be made flat to form a rear guider flat portion, and the support shaft 21 may be formed so as to be approximately perpendicular to the rear guider flat portion. That is, the surfaces of the rear guider 17 facing the left and right blades 22 are formed in a flat shape. This reduces pressure loss during air blowing, and prevents a decrease in blowing performance.

[0040] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0041] (Addendum) The above description of the embodiments discloses the following techniques.

[0042] (Technology 1) An air conditioner that is attached to a wall surface inside a room, conditions the air taken in through an intake port, and sends out the conditioned air through an outlet port, the air conditioner comprising: a cross-flow fan that is provided within a housing and has multiple blades arranged in a cylindrical shape; a stabilizer that is provided near the outlet port of the cross-flow fan; a rear guider that is provided opposite the stabilizer and forms an air passage in the space between the stabilizer; and left and right blades that are rotatably provided on a support shaft that is erected on the stabilizer, the axial direction of the support shaft being perpendicular to the opposing rear guider when in the erected position. According to this, by attaching the support shafts for the left and right blades to the stabilizer side, the left and right blades do not block the main airflow, thereby reducing pressure loss during air blowing and suppressing a decrease in blowing performance. Also, by providing the support shafts upright on the rear guider, the left and right blades do not block the main airflow, thereby suppressing a decrease in blowing performance in the left and right directions.

[0043] (Technical 2) The air conditioner according to Technical 1, wherein the stabilizer has a tongue portion that bulges toward the crossflow fan on the upstream side of the ventilation passage, and the support shaft is provided on the tongue portion. According to this, since the support shaft is provided on the tongue portion, when the stabilizer and the support shaft are manufactured as a single unit, the mold removal process during manufacturing becomes easier.

[0044] (Technology 3) An air conditioner according to Technology 2, wherein the area of ​​the region divided by the axial direction of the support shaft of the left and right blades is formed so that the area of ​​the region downstream of the ventilation duct is larger than the area of ​​the region upstream. This reduces the ventilation resistance and improves the airflow performance.

[0045] (Technical Aspect 4) The air conditioner according to Technical Aspect 3, wherein the sides of the left and right blades facing the rear guider are formed to be parallel to the surface of the rear guider. This reduces the gap between the rear guider and the left and right blades, reducing pressure loss during air blowing and preventing a decrease in blowing performance.

[0046] (Technical Aspect 5) The air conditioner according to Technical Aspect 4, wherein the surfaces of the rear guider facing the left and right blades are formed flat. This reduces pressure loss during air blowing, and prevents a decrease in blowing performance. [Industrial Applicability]

[0047] As described above, the air conditioner according to the present invention can be used for domestic air conditioning and commercial air conditioning. [Explanation of symbols]

[0048] 1 Indoor unit 10. Cabinet 11 Intake port 12 Air outlet 15 Crossflow fan 15a impeller 16 Heat exchanger 16a Front heat exchanger 16b Rear heat exchanger 17 Rear Guider 17a tangent 18 Stabilizer 18a Stabilizer flat section 18b Stabilizer tongue 19 Wind direction plate 20 Wing 21 Support shaft 22 Left and right wings 22a Upstream area 22b Downstream area Around 22e 25 Ventilation duct 30 indoors 30a cross section 30b cross section

Claims

1. An air conditioner that is attached to a wall in a room, conditions the air taken in through an intake port, and sends out the conditioned air from an outlet, a cross-flow fan provided in a housing and having a plurality of blades arranged in a cylindrical shape; a stabilizer provided near the outlet of the cross flow fan; a rear guider provided opposite the stabilizer and forming an air passage in a space between the rear guider and the stabilizer; left and right blades rotatably mounted on a support shaft erected on the stabilizer, The axial direction of the support shaft is set in a direction perpendicular to the rear guider facing the support shaft in the upright position. Air conditioner.

2. a tongue portion that bulges toward the cross flow fan on the upstream side of the ventilation passage of the stabilizer; The support shaft is provided on the tongue portion. The air conditioner according to claim 1.

3. The areas of the left and right blades divided in the axial direction of the support shaft are formed so that the area of ​​the downstream area of ​​the ventilation passage is larger than the area of ​​the upstream area. The air conditioner according to claim 2.

4. The sides of the left and right blades facing the rear guider are formed to be parallel to the surface of the rear guider. The air conditioner according to claim 3.

5. The surfaces of the rear guider facing the left and right blades are formed in a flat shape. The air conditioner according to claim 4.

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