WO2023218555A1 - Climatiseur - Google Patents

Climatiseur Download PDF

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Publication number
WO2023218555A1
WO2023218555A1 PCT/JP2022/019925 JP2022019925W WO2023218555A1 WO 2023218555 A1 WO2023218555 A1 WO 2023218555A1 JP 2022019925 W JP2022019925 W JP 2022019925W WO 2023218555 A1 WO2023218555 A1 WO 2023218555A1
Authority
WO
WIPO (PCT)
Prior art keywords
bell mouth
split
air conditioner
panel
pair
Prior art date
Application number
PCT/JP2022/019925
Other languages
English (en)
Japanese (ja)
Inventor
大輔 秋山
宏典 薮内
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2022/019925 priority Critical patent/WO2023218555A1/fr
Publication of WO2023218555A1 publication Critical patent/WO2023218555A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards

Definitions

  • the present disclosure relates to an air conditioner used for refrigeration or air conditioning applications.
  • a conventional air conditioner has an upper unit composed of a fan unit, and a lower unit housing a compressor, a heat exchanger, etc.
  • the fan unit includes a fan, a cylindrical bell mouth arranged to surround the fan, and a casing having a plate-like panel surrounding four sides of the bell mouth.
  • Patent Document 1 states that the loss of air volume blown by the fan can be reduced by devising the shape of the bell mouth, but there is room for further improvement in terms of increasing the air volume.
  • the present disclosure has been made in view of these points, and an object of the present disclosure is to provide an air conditioner that can increase the amount of air.
  • An air conditioner includes a fan, a bell mouth arranged to surround the fan, and a casing having a plate-like panel surrounding the bell mouth and forming an outer shell.
  • the bell mouth is symmetrical about the rotational axis of the fan, and has a pair of split bellmouth parts disposed within the housing with a space between each other in a direction perpendicular to the rotational axis, the pair of split bellmouth parts has an arc-shaped main body when viewed from above, and the gap between a pair of split bell mouth parts, and the gap between both ends of the main body in the arc direction is closed with a panel.
  • the air conditioner according to the present disclosure has a configuration in which the bell mouth has a pair of split bell mouth parts, and the pair of split bell mouth parts are arranged in a housing with a space between them in a direction perpendicular to the rotation axis. .
  • the gap between the pair of split bell mouths, and the gap between both ends of the main bodies of the pair of split bell mouth parts in the arc direction, is closed with a panel. By closing the gap with the panel, the panel, together with the pair of split bell mouth parts, functions as part of an air path forming member that introduces air into the fan.
  • the pair of split bell mouth parts are arranged at intervals from each other in the direction perpendicular to the rotation axis, and the panel that forms the outer shell of the air conditioner functions as a part of the air passage forming member, so that the air passage diameter can be adjusted. is expanded, and the air conditioner can increase its air volume.
  • FIG. 1 is a schematic perspective view of an air conditioner according to Embodiment 1.
  • FIG. FIG. 2 is a plan view of the air conditioner according to Embodiment 1 with the outlet grille removed.
  • FIG. 2 is a partial perspective view of the air conditioner according to Embodiment 1 with the blowout grill and fan removed.
  • FIG. 2 is an exploded partial perspective view of the air conditioner according to Embodiment 1, including a bell mouth.
  • FIG. 3 is a perspective view of the split bellmouth portion according to the first embodiment.
  • FIG. 2 is an enlarged perspective view of the fixed portion of the split bell mouth according to the first embodiment, viewed from the outside.
  • FIG. 2 is a perspective view of the fixed portion of the split bell mouth according to the first embodiment, viewed from inside.
  • FIG. 2 is a cross-sectional view of the air conditioner according to Embodiment 1 taken at the second through hole from the top.
  • FIG. 3 is a partial perspective view of an air conditioner using a bell mouth according to a comparative example, with the outlet grille removed.
  • FIG. 9 is a plan view of FIG. 9;
  • FIG. 3 is a perspective view showing a bell mouth of a comparative example.
  • FIG. 2 is a plan view of the air conditioner according to Embodiment 1 with the outlet grille removed. It is a reference diagram, and is a diagram when the length of the main body portion of the split bellmouth portion in the arc direction is shortened.
  • FIG. 3 is an explanatory diagram of the operation during manufacturing of the air conditioner according to the first embodiment.
  • FIG. 1 is a schematic perspective view of an air conditioner 1 according to the first embodiment.
  • FIG. 2 is a plan view of the air conditioner 1 according to the first embodiment with the outlet grille 23 removed.
  • the air conditioner 1 of Embodiment 1 is a so-called outdoor unit, and is connected to an indoor unit to circulate refrigerant to form a refrigerant circuit of a refrigeration cycle.
  • the air conditioner has a vertical rectangular parallelepiped shape.
  • the near side of FIG. 1 will be referred to as the front surface, and the top and bottom, left and right, front and back, front, and back will be defined based on this front surface.
  • the air conditioner has a rectangular shape, and the longitudinal direction of the rectangle is the left-right direction.
  • the air conditioner 1 has a housing 2 that forms the outer shell of the air conditioner 1, and a plurality of devices (not shown) such as a heat exchanger 5 that constitutes a refrigerant circuit are installed in the lower part of the housing 2.
  • a plurality of devices such as a heat exchanger 5 that constitutes a refrigerant circuit are installed in the lower part of the housing 2.
  • the housing 2 includes a rectangular bottom plate 20, four columns 21 provided at the four corners of the bottom plate 20 so as to extend in the vertical direction, and four panels 22 that connect the upper ends of the four columns 21. It is equipped with.
  • the four panels 22 are a front panel 22a, a back panel 22b, a right side panel 22c, and a left side panel 22d. When the panels are not distinguished from each other, they are collectively referred to as panels 22.
  • a blowout grill 23 is arranged above the space surrounded by the four panels 22. As shown in FIG. 2, the outlet grille 23 is fixed to the upper surface of a flange portion 24 extending inward from the upper end of each panel 22 with a fixing member (not shown) such as a screw.
  • a horizontally long stay 21a (see FIG. 4 described later), which is a reinforcing member, is provided between the left and right columns 21 and between the front and rear columns 21.
  • Four stays 21a are provided on the front, rear, left and right sides.
  • Each stay 21a is provided inside each panel 22 along the lower end of each panel 22.
  • the stay 21a on the front side and the stay 21a on the back side are each members having a substantially C-shaped longitudinal section.
  • two panels 25 are arranged vertically side by side.
  • the two panels 25 are fixed to the two front right and left pillars 21 with fixing members (not shown) such as screws, and close the front surface of the housing 2 .
  • a heat exchanger 5 having a U-shape in plan view is disposed at the lower portions of the back, right side, and left side of the casing 2.
  • the air conditioner 1 further includes a fan 3 as shown in FIG. ) and.
  • the fan 3, bell mouth 4, and motor are arranged in the upper part of the housing 2.
  • the bell mouth 4 is surrounded by four panels 22 on four sides.
  • the air conditioner 1 takes air into the casing 2 from the open part of the casing 2 through the rotation of the fan 3, passes it through the heat exchanger 5, and directs the air that has passed through the heat exchanger 5 upward. The air is blown out from the blow-off grille 23.
  • FIG. 3 is a partial perspective view of the air conditioner 1 according to the first embodiment with the outlet grille 23 and fan 3 removed.
  • FIG. 4 is an exploded partial perspective view of the surroundings including the bell mouth 4 of the air conditioner 1 according to the first embodiment.
  • FIG. 5 is a perspective view of the split bellmouth section 40 according to the first embodiment.
  • FIG. 6 is an enlarged perspective view of the fixing portion 44 of the split bellmouth portion 40 according to the first embodiment, viewed from the outside.
  • FIG. 7 is a perspective view of the fixing portion 44 of the split bellmouth portion 40 according to the first embodiment, viewed from inside.
  • FIG. 8 is a cross-sectional view taken at the height of the second through hole 46 from the top in the split bell mouth portion 40 of the air conditioner 1 according to the first embodiment.
  • the bell mouth 4 has a pair of split bell mouth parts 40.
  • the pair of split bell mouth parts 40 have the same shape and are symmetrical with respect to the rotation axis O of the fan 3.
  • the pair of split bell mouth parts 40 are arranged in the housing 2 in a state separated from each other in the left-right direction. Since the pair of split bell mouth parts 40 have the same shape, the configuration of the left split bell mouth part 40 will be described below.
  • the split bellmouth portion 40 has a main body portion 41 that is arcuate in plan view, and a plate-like portion 42 that extends outward from the lower end of the main body portion 41.
  • the main body portion 41 and the plate-like portion 42 are integrally formed.
  • the main body portion 41 includes fixing portions 44 at both ends in the arc direction.
  • the main body portion 41 includes a circular arc portion 43 having an arc shape when viewed from above, and fixing portions 44 provided at both ends of the circular arc portion 43 in the arc direction.
  • the inner surface 43a of the arcuate portion 43 forms an air path through which the airflow generated by the fan 3 passes.
  • the arc portion 43 includes a flat portion 45 at both ends of the arc portion 43 in the arc direction, excluding the upper end.
  • the flat portion 45 is attached to the right side panel 22c when the split bell mouth portion 40 is attached to the housing 2 using a mounting seat (not shown), which will be described later, provided on the plate portion 42. and is formed into a planar shape extending parallel to the left side panel 22d.
  • the fixing part 44 is a part that is fixed to the panel 22. Specifically, of the two front and rear fixing parts 44, the front fixing part 44 is a part fixed to the front panel 22a, and the rear fixing part 44 is a part fixed to the back panel 22b. .
  • the fixing portion 44 is formed into a flat plate shape extending in the vertical direction and the left-right direction from both ends of the circular arc portion 43 in the circular arc direction.
  • the fixing part 44 is attached to the front panel 22a and the back panel 22b when the split bell mouth part 40 is attached to the housing 2 using a mounting seat (not shown), which will be described later, provided on the plate part 42. It is made up of parallel planes.
  • the fixing part 44 is formed with three through holes 46 that penetrate the fixing part 44 in the thickness direction. The three through holes 46 are formed at intervals in the vertical direction. Note that the number of through holes 46 is not limited to three.
  • the upper portion 44a of the fixed portion 44 is connected to the arcuate portion 43 at an end side 44A1 on the opposite side to the side facing the right split bell mouth portion 40.
  • a lower portion 44b below the upper portion 44a of the fixing portion 44 is connected to the flat portion 45 at an edge 44A2 on the side opposite to the split bell mouth portion 40 on the right side.
  • the inner surface 44b1 of the lower portion 44b of the fixing portion 44 faces the outer surface 43b of the arc portion 43, and has a gap therebetween.
  • the upper portion 44a of the fixing portion 44 is a portion that includes the uppermost through hole 46.
  • the lower portion 44b of the fixing portion 44 is a portion below the upper portion 44a and includes the remaining two through holes 46.
  • the plate-shaped portion 42 has a flat plate shape, and its external shape when viewed in plan is such that it follows the front panel 22a, the rear panel 22b, and the left side panel 22d when installed in the housing 2. It is formed.
  • the plate portion 42 is provided with a mounting seat (not shown) for attaching the split bell mouth portion 40 to the stay 21a.
  • the split bell mouth portion 40 is fixed to the stay 21a at the mounting seat using a fixing member (not shown) such as a bolt.
  • the pair of split bell mouth parts 40 are fixed to the front and rear two stays 21a with an interval left and right.
  • the pair of split bell mouth parts 40 are fixed to the housing 2 at the stay 21a portion with a space between them in the direction orthogonal to the rotation axis O.
  • Attachment holes 26 are formed in the front panel 22a and the back panel 22b at positions corresponding to the through holes 46 of the pair of split bell mouth parts 40.
  • the attachment hole 26 is formed to penetrate the front panel 22a and the back panel 22b in the thickness direction.
  • a fixing member 30 such as a pop nut is attached to the attachment hole 26 .
  • the front panel 22a and the back panel 22b are fixed to fixing parts 44 of a pair of split bell mouth parts 40 using fixing members 30. In this way, the pair of split bellmouth parts 40 are fixed to the front panel 22a and the back panel 22b in surface contact with the flat fixing parts 44.
  • the tip 30a of the fixing member 30 inserted from the outside of the front panel 22a into the second through hole 46 from the top in the split bell mouth part 40 is connected to the inner surface 44b1 of the fixing part 44. It is located in the gap between the circular arc portion 43 and the outer surface 43b. That is, the tip portion 30a of the fixing member 30 does not protrude inside the arcuate portion 43. Thereby, the tip end 30a of the fixing member 30 can be prevented from protruding into the air path and interfering with the airflow. This also applies to the fixing member 30 inserted into the third through hole 46 from the top.
  • the gap between the pair of split bell mouth parts 40 is fixed to both ends of the main body part 41 in the arc direction.
  • the gap 50 between them (see FIGS. 4 and 8) is closed.
  • the front panel 22a closes the gap 50 between the two fixing parts 44 spaced apart from each other in the left and right directions on the front side of the pair of split bell mouth parts 40.
  • a gap 51 between two fixing parts 44 spaced apart from each other in the left and right directions on the back side of the pair of split bell mouth parts 40 is closed by the back panel 22b.
  • a rectangular first portion 22a1 (see FIG.
  • FIG. 9 is a partial perspective view of an air conditioner using a bell mouth according to a comparative example, with the outlet grille removed.
  • FIG. 10 is a plan view of FIG. 9.
  • FIG. 11 is a perspective view showing a bell mouth of a comparative example.
  • the bell mouth 400 of the comparative example has an oval shape that is long in one direction when viewed from above.
  • the entire inner surface 400a of the bell mouth 400 constitutes an air passage.
  • the clearance t becomes smaller.
  • the bell mouth 4 has a pair of split bell mouth parts 40, so to speak, the bell mouth 4 has a split structure.
  • a pair of split bell mouth portions 40 are arranged in the housing 2 at intervals in a direction perpendicular to the rotation axis O, and gaps 50 and 51 between the fixed portions 44 form the outer wall of the air conditioner 1. It is covered by a panel 22 of the casing 2 that constitutes the casing 2.
  • the pair of split bell mouth parts 40 are arranged at intervals from each other in the direction perpendicular to the rotation axis O, and the panel 22 forming the outer shell is an air passage forming member.
  • the air conditioner 1 of the first embodiment can have a larger air passage diameter than a configuration in which the bell mouth 400 is not divided like the air conditioner of the comparative example.
  • FIG. 12 is a plan view of the air conditioner 1 according to the first embodiment with the outlet grille 23 removed.
  • d1 is the air passage diameter of the air conditioner 1 of the first embodiment
  • d2 is the air passage diameter of the comparative example.
  • the air passage diameter can be expanded more than in the comparative example.
  • the diameter of the air passage can be increased, the diameter of the fan 3 disposed inside the bell mouth 4 can also be increased, and the air volume can be increased.
  • the pair of split bell mouth parts 40 constituting the bell mouth 4 are fixed to the front panel 22a and the back panel 22b, the noise problem in the comparative example does not occur.
  • the bell mouth 4 has a split structure, so that the number of molds used during manufacturing can be reduced, and mold costs can be reduced.
  • the inner surface of the bell mouth 400 is divided into four surfaces in the circumferential direction, and the outer surface is formed into two upper and lower surfaces. The need arises, and a total of six molds are required.
  • the bell mouth 4 has a split structure, so that the inner surface of the bell mouth 4 is divided into two surfaces in the circumferential direction, and the outer surface is formed into two upper and lower surfaces. Since it can be formed separately, only a mold with four sides is required.
  • FIG. 13 is a reference diagram, and is a diagram when the length of the main body portion of the split bell mouth portion in the arc direction is shortened.
  • the length of the main body portion 41 of the split bellmouth portion 40 in the arc direction is preferably shorter from the viewpoint of reducing the material cost of the split bellmouth portion 40 .
  • the inner surface shape of the air passage becomes distorted, which may cause turbulence in the airflow and cause noise.
  • it is preferable that the length of the main body portion 41 in the arc direction is long to some extent.
  • the length of the main body part 41 in the arc direction may be determined by comprehensively considering these conditions.
  • the bell mouth 4 is divided in the longitudinal direction (left and right direction) of the housing 2 when viewed from above. The reason for this will be explained using FIG. 14 below.
  • FIG. 14 is a modification of the air conditioner 1 according to the first embodiment, and is an explanatory diagram of the positional relationship between the bell mouths in a configuration in which two bell mouths 4 are arranged in one housing 2A.
  • FIG. 15 is a reference diagram, and is an explanatory diagram of the positional relationship between the bell mouths in a configuration in which two bell mouths are arranged in one housing 2A and the dividing direction is the transverse direction (front and back direction). .
  • the two bell mouths 4 are arranged in the longitudinal direction.
  • the bell mouth 4 is divided in the longitudinal direction. As shown in FIG. 14, when the bell mouth 4 is divided in the longitudinal direction, the air passages of two longitudinally adjacent bell mouths 4 do not communicate with each other, so the above-mentioned inconvenience does not occur and the intended air flow can be achieved. can be formed.
  • two plurality of devices such as the fan 3 and the heat exchanger 5 constituting the refrigerant circuit are also disposed. ing.
  • two sets of a plurality of devices, such as the bell mouth 4, the fan 3, and the heat exchanger 5 constituting the refrigerant circuit are arranged in the housing 2A.
  • the air conditioner 1 may have a configuration in which a plurality of bell mouths 4 and other devices are arranged in a line in the longitudinal direction.
  • FIG. 16 is an explanatory diagram of the operation during manufacturing of the air conditioner 1 according to the first embodiment.
  • the split bellmouth parts 40 can be stacked with the split surface 40a facing down. Therefore, the divided bellmouth portions 40 can be stored and transported in a stacked state during manufacture, and manufacturing costs can be reduced.
  • the air conditioner 1 includes the fan 3, the bell mouth 4 arranged to surround the fan 3, and the plate-like panel surrounding the bell mouth 4. and a housing 2 forming an outer shell.
  • the bell mouth 4 is symmetrical about the rotation axis O of the fan 3, and has a pair of split bell mouth parts 40 arranged in the housing 2 at a distance from each other in a direction perpendicular to the rotation axis O.
  • the pair of split bell mouth parts 40 have main bodies 41 that are arcuate in plan view, and the gaps between the pair of split bell mouth parts 40 are the gaps between both ends of the main parts 41 in the arc direction. is covered by a panel.
  • the air conditioner 1 can increase the diameter of the air passage and the volume of air.
  • Each of the pair of split bell mouth parts 40 has a flat plate-shaped fixing part 44 fixed to the panel 22 at both ends of the main body part 41 in the arc direction, and the fixing part 44 is fixed to the panel 22.
  • the air conditioner 1 can prevent noise caused by vibration caused by contact between the pair of split bell mouth parts 40 and the panel 22.
  • the housing 2 has a rectangular shape when viewed from above, and the pair of split bell mouth parts 40 are arranged at intervals in the longitudinal direction of the housing 2.
  • the air conditioner 1 includes a plurality of bell mouths 4, and the plurality of bell mouths 4 are arranged in the housing 2 in a plurality of lines in the longitudinal direction.
  • the air conditioner 1 can be configured so that the air paths of adjacent bell mouths 4 do not communicate with each other, and the intended airflow can be formed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un climatiseur comprenant un ventilateur, un pavillon disposé de façon à entourer le ventilateur, et un boîtier qui forme le contour et comporte un panneau en forme de plaque entourant le pavillon. Selon l'invention : le pavillon possède une paire de portions de pavillon divisées qui sont symétriques autour de l'axe de rotation du ventilateur et disposées à l'intérieur du boîtier avec un espace entre elles dans une direction orthogonale à l'axe de rotation ; la paire de portions de pavillon divisées comprennent une section de corps principal en forme d'arc telle que vue dans une vue en plan ; et un espace entre la paire de portions de pavillon divisées, qui est un espace entre les deux extrémités de la section de corps principal dans la direction d'arc, est fermé par le panneau.
PCT/JP2022/019925 2022-05-11 2022-05-11 Climatiseur WO2023218555A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/019925 WO2023218555A1 (fr) 2022-05-11 2022-05-11 Climatiseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/019925 WO2023218555A1 (fr) 2022-05-11 2022-05-11 Climatiseur

Publications (1)

Publication Number Publication Date
WO2023218555A1 true WO2023218555A1 (fr) 2023-11-16

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ID=88729966

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/019925 WO2023218555A1 (fr) 2022-05-11 2022-05-11 Climatiseur

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WO (1) WO2023218555A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5682467U (fr) * 1979-11-30 1981-07-03
JP2014129921A (ja) * 2012-12-28 2014-07-10 Panasonic Corp 室外ユニット
JP2017198388A (ja) * 2016-04-27 2017-11-02 ダイキン工業株式会社 冷凍装置の室外ユニット
WO2017199339A1 (fr) * 2016-05-17 2017-11-23 三菱電機株式会社 Unité extérieure pour dispositif de climatisation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5682467U (fr) * 1979-11-30 1981-07-03
JP2014129921A (ja) * 2012-12-28 2014-07-10 Panasonic Corp 室外ユニット
JP2017198388A (ja) * 2016-04-27 2017-11-02 ダイキン工業株式会社 冷凍装置の室外ユニット
WO2017199339A1 (fr) * 2016-05-17 2017-11-23 三菱電機株式会社 Unité extérieure pour dispositif de climatisation

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