blower

Abstract

To provide an air blowing device capable of inhibiting air blown out from a ceiling surface side to a floor surface side from being diffused to outside the air blowing device.SOLUTION: An air blowing device 100 includes: a side panel 110 having a hollow space 111 and a suction port 112 on the lower side of a front surface and erected upwardly; a plurality of top nozzles 120 erected horizontally from the front surface starting from the upper side of the side panel 110 and having blowout ports 121 facing downwardly; and an air blower 130 generating an air current flowing from the suction port 112 through the hollow space 111 toward the blowout ports 121. The top nozzles 120 are provided in parallel along the front surface from one side end of the side panel 110 to the other side end. An end on one side end side of the side panel 110 in the suction port 112 is disposed on the other side end side of the top nozzle 120a provided at one side end. An end on the other side end side of the side panel 110 in the suction port 112 is disposed on one side end side of the top nozzle 120b provided at the other side end.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a blower that blows air from a ceiling surface side toward a floor surface side. [Background technology]

[0002] Patent Document 1 discloses an air conditioning device that can secure an energy-efficient air-conditioned space without partitions and can be easily relocated or relocated due to layout changes, etc. This air conditioning device supplies conditioned air to a local area in an open space. This air conditioning device includes a ceiling outlet surface located above the local area and supplying a parallel airflow of conditioned air descending toward the local area, an air intake port located to the side below the local area, an air outlet port that blows a slit-shaped airflow of conditioned air along the floor surface of the local area toward the air intake port, and a flow path that connects the air intake port to the ceiling outlet surface. The flow path is equipped with a fan that blows air drawn into the flow path from the air intake port toward the ceiling outlet surface, and an air conditioner that conditions the air drawn into the flow path from the air intake port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-44445 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a blower that prevents air blown from a ceiling surface side toward a floor surface side from diffusing outside the blower. [Means for solving the problem]

[0005] The air blower device according to the present disclosure includes a side panel that is erected upward and has a hollow space and an air inlet below its front surface; multiple top nozzles that are erected horizontally from the front surface, originating above the side panel, and have air outlets that face downward; and a blower that generates an airflow that flows from the air inlet through the hollow space to the air outlets. The top nozzles are arranged in parallel along the front surface from one end of the side panel to the other end. The end of the side panel on the side of the air inlet is located closer to the other end than the top nozzle located at the one end. The end of the side panel on the side of the air inlet is located closer to the one end than the top nozzle located at the other end. [Effects of the Invention]

[0006] In the blower device according to the present disclosure, both ends of the air inlet are positioned inside the top nozzle, so that the air blown out from the top nozzle can be actively drawn into the air inlet, thereby preventing the air blown out from the top nozzle outlet from diffusing outside the blower device. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view showing the configuration of the blower device according to the first embodiment. [Figure 2] FIG. 2 is a side view showing the configuration of the blower device and the airflow generated by the blower device in the first embodiment. [Figure 3] FIG. 3 is a front view showing the configuration of the blower device and the airflow generated by the blower device in the first embodiment. [Figure 4] FIG. 4 is a front view showing the configuration of a blower device in a modified example and the airflow generated by the blower device. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art.

[0009] 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) Hereinafter, the first embodiment will be described with reference to FIGS.

[0011] [1-1.Configuration] The blower 100 is placed in an indoor space such as an office and generates an airflow that blows from the ceiling toward the floor. The blower 100 includes a side panel 110, a plurality of top nozzles 120, a blower 130, a duct 140, and a support frame 150.

[0012] [1-1-1. Side panel] The side panel 110 is erected facing upward. "Erected facing upward" means that the side panel 110 stands from the floor surface toward the ceiling surface in an indoor space. The side panel 110 is a housing formed by assembling multiple boards of wood or the like. The side panel 110 has a hollow space 111 and an air inlet 112.

[0013] The hollow space 111 is a space for arranging the duct 140 and the blower 130 inside the side panel 110. The hollow space 111 is a space formed by assembling the side panels 110. The hollow space 111 is formed by at least the front panel 110a, the rear panel 110b, one side end panel 110c, and the other side end panel 110d.

[0014] The front panel 110a is a board that stands upright from the floor surface side toward the ceiling surface side in an indoor space.

[0015] The rear panel 110b is a plate member disposed opposite the front panel 110a with the hollow space 111 interposed therebetween.

[0016] The one side end panel 110c is a plate member arranged on one side end side of the front panel 110a and the rear panel 110b.

[0017] The other side end panel 110d is a plate member disposed opposite the one side end panel 110c across the hollow space 111. In other words, the other side end panel 110d is disposed on the other side end side of the front panel 110a and the rear panel 110b.

[0018] Air inlet 112 is provided below the front surface of side panel 110 and is an opening for drawing air into duct 140. "The front surface of side panel 110" refers to front panel 110a among the plates that make up side panel 110. In other words, air inlet 112 is provided in front panel 110a. "Below" refers to the position closer to the floor than the head of a seated person in an indoor space, specifically a position 130 cm above the floor. Air inlet 112 is rectangular and has an upper end 112a, a lower end 112b, one side end 112c, and the other side end 112d.

[0019] The upper end 112a is a horizontal side.

[0020] The lower end 112b is a side provided below the upper end 112a.

[0021] One side end 112c is a side provided on one side end of upper end 112a and lower end 112b. In other words, one side end 112c is a side provided on one side end of side panel 110 in the rectangular opening.

[0022] The other end 112d is a side located on the other end side of the upper end 112a and the lower end 112b. In other words, the other end 112d is a side provided on the other end side of the side panel 110 in the rectangular opening.

[0023] Suction port 112 is rectangular in shape with upper end 112a and lower end 112b as long sides and one side end 112c and the other side end 112d as short sides.

[0024] One side end 112c provided at the end of one side end of side panel 110 in suction port 112 is provided closer to the other side end of side panel 110 than top nozzle 120 arranged at one side end of side panel 110.

[0025] The other end 112d of the suction port 112 provided at the end on the other side end side of the side panel 110 is provided closer to one side end of the side panel 110 than the top nozzle 120 arranged at the other side end of the side panel 110.

[0026] [1-1-2. Top nozzle] The top nozzle 120 is a type of rectangular ventilation pipe that extends horizontally from the front panel 110a, originating above the side panel 110. Air delivered from the duct 140 flows into the top nozzle 120. "Above the side panel 110" refers to a position higher than the head of a standing person, specifically, a position at least 200 cm above the floor in an indoor space. "Installed horizontally" refers to an orientation that is parallel to the floor and ceiling in an indoor space. The top nozzle 120 is connected to the front panel 110a using known assembly techniques. Eight top nozzles 120 are arranged in parallel along the front panel 110a from one end of the side panel 110 to the other end. The top nozzles 120 are preferably arranged at equal intervals. The top nozzle 120 provided at one end of the side panel 110 is referred to as top nozzle 120a, and the top nozzle 120 provided at the other end of the side panel 110 is referred to as top nozzle 120b. The top nozzle 120 has an outlet 121 .

[0027] The air outlet 121 is an opening for blowing out air that has flowed into the top nozzle 120. The air outlet 121 is provided facing downward. "Facing downward" refers to facing directly toward the floor in an indoor space. That is, the air outlet 121 is provided on the surface of the rectangular top nozzle 120 that faces directly toward the floor. The air outlet 121 is a rectangular opening, and is formed so that the long side is in the upright direction and the short side is parallel to the side panel 110. One air outlet 121 is provided for each top nozzle 120. The air outlets 121 belonging to each top nozzle 120 are preferably arranged on the same plane when a certain horizontal plane is imagined. That is, in an indoor space, the air outlets 121 belonging to each top nozzle 120 are preferably arranged at the same height from the floor.

[0028] [1-1-3. Blower] The blower 130 generates an airflow that flows from the air inlet 112 to the air outlet 121 through a duct 140 arranged in the hollow space 111. A known turbomachine such as a centrifugal blower can be used as the blower 130. Four blowers 130 are arranged, and the airflow generated by each blower 130 is conveyed to the two top nozzles 120.

[0029] [1-1-4. Duct] Duct 140 is an air duct for transporting air drawn into blower 130 from suction port 112 to top nozzle 120. One duct 140 is provided for each top nozzle 120. That is, in this embodiment, eight ducts 140 are provided. For example, a known flexible duct can be used as duct 140.

[0030] [1-1-5. Support frame] The support frame 150 is a member for supporting the top nozzles 120. The support frame 150 is formed from two support columns 150a and one support rod 150b. The support columns 150a are square timbers that stand upright from the floor surface in an indoor space. The support rod 150b is a square timber that is placed at the upright tip of the support column 150a. The support rod 150b is connected to the upright tip sides of the eight top nozzles 120.

[0031] [1-2. Operation] The operation of the blower device 100 configured as above will be described below.

[0032] When blower 130 starts operating, air in the indoor space where blower device 100 is installed becomes airflow AF1 and is drawn in through inlet 112. The air drawn in through inlet 112 (airflow AF1) passes through duct 140 and is transported to top nozzle 120. The air transported to top nozzle 120 (airflow AF1) is blown out downward from outlet 121, i.e., toward the floor. When airflow AF1 is blown out from outlet 121, air in the space around airflow AF1 is attracted toward airflow AF1, and a negative pressure region S is generated in the space between adjacent top nozzles 120. Negative pressure (also called negative pressure) refers to a state in which air pressure is lower than the surroundings. In other words, negative pressure region S is a region where air pressure is lower than the surroundings. When negative pressure region S is generated, a force acts to resolve the negative pressure, and air (airflow AF2) is generated in the space around top nozzle 120 to resolve negative pressure region S. Airflow AF2 is also called an induced airflow. Airflow AF2 suppresses the force that attracts adjacent airflows AF1 toward negative pressure region S and causes them to merge. Therefore, blower device 100 generates an airflow in which the merging of adjacent airflows AF1 is suppressed, i.e., an airflow AF3 that is linear in the blowing direction as a whole (in the present application, this airflow may be referred to as a "planar airflow" or "planar airflow"). Air (airflow AF1) blown downward from air outlet 121 is sucked into air inlet 112.

[0033] [1-3. Effects, etc.] As described above, blower device 100 includes side panel 110, which is erected upward and has hollow space 111 and air inlet 112 below the front surface; multiple top nozzles 120, which are erected horizontally from the front surface starting from above side panel 110 and have air outlets 121 facing downward; and blower 130, which generates airflow that flows from air inlet 112 to air outlet 121 through hollow space 111. Top nozzles 120 are arranged in parallel along the front surface from one end of side panel 110 to the other end of side panel 110. An end portion (one-side end 112c) of one end of side panel 110 at air inlet 112 is located closer to the other end than top nozzle 120a located at the one end. An end portion (other-side end 112d) of side panel 110 at air inlet 112 is located closer to one end than top nozzle 120b located at the other end.

[0034] As a result, both horizontal ends of suction port 112 are positioned inside top nozzle 120a and top nozzle 120b. Therefore, compared to when both ends of suction port 112 are positioned outside top nozzle 120a and top nozzle 120b, airflow AF1 is more actively drawn into suction port 112, and diffusion of airflow AF1 to the outside of the blower can be suppressed.

[0035] Furthermore, by turning the airflow AF1 into a planar airflow (airflow AF3), the occurrence of non-uniformity (variation) in the velocity distribution of the airflow AF1 on a horizontal plane is suppressed. Therefore, for example, the blower device 100 can provide the same airflow AF1 to the user regardless of the user's position.

[0036] (Variation 1) Hereinafter, a first modification of the first embodiment will be described with reference to FIG.

[0037] [2-1.Configuration] Detailed description of the same configuration as in the first embodiment will be omitted, and only the configuration different from the first embodiment will be described.

[0038] [2-1-1. Intake Port Configuration] One side end 112c and the other side end 112d are disposed above the upper end 112a. In the first modification, the upper end 112a and the lower end 112b are curved downward (towards the floor surface) to form a U-shape.

[0039] [2-1-2. Air outlet configuration] The opening area of ​​the air outlet 121a belonging to the top nozzle 120a and the air outlet 121b belonging to the top nozzle 120b is larger than the opening area of ​​the air outlets 121 belonging to all the top nozzles 120 except for the air outlets 121a and 121b. The opening area of ​​the air outlet 121a and the opening area of ​​the air outlet 121b are equal.

[0040] [2-2. Operation] The airflows AF1, AF2, and AF3 and the negative pressure region S that are generated when the operation of the blower 130 is started are the same as those in the first embodiment, and therefore detailed description thereof will be omitted.

[0041] The pressure loss of airflow AF1 blown out from outlet 121a and the pressure loss of airflow AF1 blown out from outlet 121b are smaller than the pressure loss of airflow AF1 blown out from outlet 121 excluding outlets 121a and 121b. The air volume Qa of airflow AF1 blown out from outlet 121a and the air volume Qb of airflow AF1 blown out from outlet 121b are larger than the air volume Qc blown out from outlet 121 excluding outlets 121a and 121b. The magnitude relationship between air volume Qa, air volume Qb, and air volume Qc is Qa=Qb>Qc.

[0042] The air (airflow AF1) blown out downward from the air outlet 121 is sucked into the air inlet 112.

[0043] [2-3. Effects, etc.] As in variant example 1, the end portion on one side of the side panel 110 at the suction port 112 (one side end portion 112c) and the end portion on the other side of the side panel 110 at the suction port 112 (other side end portion 112d) may be positioned above the upper end portion (upper end portion 112a) at the horizontal center of the suction port 112.

[0044] As a result, the distance between air outlet 121a and air inlet 112 and the distance between air outlet 121b and air inlet 112 are shorter than those in embodiment 1. Therefore, airflow AF1 at one end of side panel 110 and airflow AF1 at the other end of side panel 110 are actively sucked into air inlet 112, thereby preventing airflow AF1 from diffusing outside the blower.

[0045] As in variant example 1, the air volume (air volume Qa, air volume Qb) blown out from each of the air outlets 121a belonging to the top nozzle 120a provided at one end of the side panel 110 and the air outlet 121b belonging to the top nozzle 120 provided at the other end of the side panel 110 may be greater than the air volume Qc blown out from each of the air outlets 121 belonging to all top nozzles 120 except for the top nozzle 120a provided at one end and the top nozzle 120b provided at the other end.

[0046] As a result, airflow AF1 blown out from outlet 121a and airflow AF1 blown out from outlet 121b act as an air wall (also called an air curtain) against airflow AF1 blown out from outlets 121 other than outlets 121a and 121b. Therefore, airflow AF1 blown out from outlets 121 other than outlets 121a and 121b is actively sucked into inlet 112, thereby making it possible to suppress airflow AF1 from diffusing to the outside of the blower.

[0047] As in variant example 1, the air volume Qa blown out from the air outlet 121a belonging to the top nozzle 120a provided at one end of the side panel 110 may be equal to the air volume Qb blown out from the air outlet 121b belonging to the top nozzle 120b provided at the other end of the side panel 110.

[0048] This prevents airflow AF1 blown out from air outlets 121 excluding air outlets 121a and 121b from being biased toward either the wall of air formed at one side end of side panel 110 or the wall of air formed at the other side end of side panel 110. Therefore, airflow AF1 blown out from air outlets 121 excluding air outlets 121a and 121b is actively sucked into intake port 112, thereby preventing airflow AF1 from diffusing outside the blower.

[0049] (Variation 2) The second modification of the first embodiment will now be described.

[0050] [3-1.Configuration] Detailed description of the same configurations as those in the first embodiment and the first modification will be omitted, and only the configurations different from those in the first embodiment and the first modification will be described.

[0051] In blower device 100, a filter for collecting dust contained in the air drawn into inlet 112 may be disposed at inlet 112 or downstream of inlet 112.

[0052] The upper end 112a and the lower end 112b may be formed in a U-shape so as to be convex downward (towards the floor surface).

[0053] The top nozzle 120 may have a straightening vane so that, of the velocity vectors of the airflow AF1 blown out from the outlet 121, the velocity vector heading towards the inlet 112 is larger than the other velocity vectors excluding the velocity vector heading towards the inlet 112.

[0054] In the first embodiment and the first modification, four blowers 130 are provided, but the present invention is not limited to this. Two blowers 130 may be provided, and an airflow generated by one blower 130 may be conveyed to four top nozzles 120.

[0055] In the first embodiment and the first modification, eight top nozzles 120 are arranged, but the present invention is not limited to this. Two or more top nozzles 120 may be arranged.

[0056] In the first embodiment and the first modification, the support columns 150a and the support rods 150b that make up the support frame 150 are made of square material, but this is not limiting. The support columns 150a and the support rods 150b may also be made of round bar material.

[0057] [3-2. Operation] The airflows AF1, AF2, and AF3 and the negative pressure region S that are generated when the operation of the blower 130 is started are similar to those in the first embodiment and the first modification, and therefore detailed description thereof will be omitted.

[0058] The magnitude relationship between the airflow rates Qa, Qb, and Qc is the same as in the first modification, and therefore a detailed description thereof will be omitted.

[0059] [3-3. Effects, etc.] As in the second modification, the blower device 100 may include a filter for collecting dust contained in the air drawn into the air inlet 112.

[0060] This allows purified air (airflow AF1) with less dust than before passing through the filter to be blown out from air outlet 121. Therefore, a comfortable air environment can be provided to the user using blower device 100.

[0061] The upper end 112a and the lower end 112b may be formed in a U-shape as in Modification 2. Even when the upper end 112a and the lower end 112b are formed in a U-shape, the same effect as in Modification 1 can be obtained.

[0062] As in the second modification, the top nozzle 120 may have a rectifying plate that controls the direction of the airflow AF1 blown out from the air outlet 121.

[0063] This allows blower device 100 to blow out airflow AF1 toward air inlet 112. Therefore, airflow AF1 blown out from air outlet 121 is actively sucked into air inlet 112, thereby preventing airflow AF1 from diffusing outside the blower device.

[0064] As described above, the first embodiment, the first modification, and the second modification have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to these, and can also 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 first embodiment, the first modification, and the second modification to create a new embodiment.

[0065] It should be noted that the above-described embodiments and modifications 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. [Industrial Applicability]

[0066] The present disclosure is applicable to a blower in which the airflow blown from the ceiling surface side toward the floor surface side can be diffused outside the blower. [Explanation of symbols]

[0067] 100 Blower 110 Side Panel 110a Front Panel 110b rear panel 110c One side end panel 110d Other side end panel 111 Hollow space 112 Intake port 112a Upper end 112b Bottom end 112c One end 112d Other end 120 Top Nozzle 120a Top Nozzle 120b Top Nozzle 121 Air outlet 121a blowout 121b blowout 130 blower 140 ダクト 150 support 150a support column 150b support stick

Claims

1. a side panel having a hollow space and an intake port at a lower front surface thereof and erected facing upward; a plurality of top nozzles each having a downwardly directed air outlet and horizontally erected from the front surface starting from the upper portion of the side panel; a blower that generates an airflow from the air inlet through the hollow space toward the air outlet; Equipped with The top nozzles are arranged in parallel along the front surface from one side end to the other side end of the side panel, an end portion of the side panel at the suction port on the one side end side is disposed closer to the other side end than the top nozzle provided at the one side end, an end portion of the side panel at the suction port on the other side end side is disposed closer to the one side end than the top nozzle provided at the other side end, an end portion of the side panel at the one side end of the suction port and an end portion of the side panel at the other side end of the suction port are disposed above an upper end portion of the suction port at the center in the horizontal direction; Blower.

2. a volume of air blown out from each of the air outlets belonging to the top nozzle provided at the one side end of the side panel and the air outlets belonging to the top nozzle provided at the other side end of the side panel is greater than a volume of air blown out from each of the air outlets belonging to all top nozzles except for the top nozzle provided at the one side end and the top nozzle provided at the other side end; The blower device according to claim 1 .

3. the volume of air blown out from the air outlet belonging to the top nozzle provided at the one side end of the side panel is equal to the volume of air blown out from the air outlet belonging to the top nozzle provided at the other side end of the side panel, The blower device according to claim 2 .

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