EP3985323A1 - Climatiseur - Google Patents

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Publication number
EP3985323A1
EP3985323A1 EP20827831.7A EP20827831A EP3985323A1 EP 3985323 A1 EP3985323 A1 EP 3985323A1 EP 20827831 A EP20827831 A EP 20827831A EP 3985323 A1 EP3985323 A1 EP 3985323A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
flange portion
rear guider
air path
flow fan
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP20827831.7A
Other languages
German (de)
English (en)
Other versions
EP3985323A4 (fr
Inventor
Shu NAKAO
Masanobu Wada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
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 Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP3985323A1 publication Critical patent/EP3985323A1/fr
Publication of EP3985323A4 publication Critical patent/EP3985323A4/fr
Pending legal-status Critical Current

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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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers

Definitions

  • the present disclosure relates to an air conditioner including a main body having an inlet and an outlet of air, a heat exchanger, a cross flow fan, a rear guider, and a stabilizer that is disposed opposite to the rear guider.
  • a blower circuit through which airflows is formed in a main body casing having an inlet and an outlet.
  • a cross flow fan is provided in the blower circuit, and a heat exchanger is disposed in the vicinity of an upstream side of the cross flow fan. Then, the air sucked through the inlet by the rotation of the cross flow fan is blown out through the outlet after the heat exchange in the heat exchanger.
  • the indoor unit includes a rear guider and a stabilizer to form a flow of air generated by the rotation of the cross flow fan.
  • Air conditioner 1 has inlet 2 of air, which is disposed on an upper surface of a main body, and outlet 3 that is disposed on a front surface of the main body.
  • Cross flow fan 4 is disposed at a central portion of the main body.
  • Rear guider 5 is disposed behind cross flow fan 4, and stabilizer 6 is disposed opposite to rear guider 5.
  • Heat exchanger 7 is disposed so as to sandwich rear guider 5, stabilizer 6, and cross flow fan 4 from a front-rear direction.
  • Heat exchanger 7 includes front heat exchanger 7a and rear heat exchanger 7b.
  • Rear guider 5 includes rear guider flange portion 9.
  • Rear guider flange portion 9 rectifies air such that the air flows above water receiving pan 8, and the air is allowed to flow into cross flow fan 4.
  • Rear guider flange portion 9 has a uniform thickness.
  • air conditioner 1 having the above configuration, when cross flow fan 4 is rotated, the air flowing in from inlet 2 on the upper surface of the main body passes through front heat exchanger 7a and rear heat exchanger 7b.
  • the heat-exchanged air passes through cross flow fan 4, and is blown out from outlet 3.
  • the air having passed through a lower portion of rear heat exchanger 7b, which is a portion of rear heat exchanger 7b and is below rear guider portion tip end 9a flows upward along rear guider flange portion facing surface 9b that faces rear heat exchanger 7b.
  • the air merges at rear guider flange portion tip end 9a with the air that has passed through an upper portion of rear heat exchanger 7b, which is a portion of rear heat exchanger 7b and is above rear guider portion tip end 9a, and flows toward cross flow fan 4.
  • the shape of the rear guider flange portion is defined for the purpose of rectifying the airflow on the cross flow fan side, the airflow on the rear guider flange portion facing surface of the rear guider flange portion, which faces the rear heat exchanger, is not considered. Therefore, when the air that has passed through the rear heat exchanger passes through a flange back air path formed by the rear heat exchanger and the rear guider flange portion facing surface, the wind speed may be increased or the turbulence of the air may be caused. Thereby, there is a risk of deterioration of the ventilation performance.
  • the present inventors have found that, for example, in a case where there is a reduced flow portion in which the air path width is locally narrowed in the flange back air path, an increase in the wind speed in the reduced flow portion, collision of the airflow to the surface of the reduced flow portion, merging of the airflows in different directions, or the like occurs, which may increase the ventilation resistance to cause deterioration of the ventilation performance.
  • the present disclosure provides an air conditioner capable of suppressing an increase in wind speed and turbulence of airflow which are caused by a rear guider flange portion facing surface when air having passed through a rear heat exchanger flows through a flange back air path.
  • An air conditioner of the present disclosure includes a main body that has an inlet and an outlet of air; a front heat exchanger that is disposed inside the main body, on a front side of the main body; a rear heat exchanger that is disposed on a rear side of an inner portion of the main body; a cross flow fan that is disposed inside the main body, and has a rotating shaft parallel to a left-right direction of the main body; and a stabilizer and a rear guider that are respectively disposed on a front side and a rear side of an outer peripheral portion of the cross flow fan, and constitute a first air path.
  • the rear guider has a rear guider flange portion disposed between the rear heat exchanger and the cross flow fan.
  • the rear guider flange portion has a first surface that faces the rear heat exchanger, the rear heat exchanger and the first surface of the rear guider flange portion constitute a second air path, the second air path has any section perpendicular to the rotating shaft of the cross flow fan, and in the section, a distance between the first surface and the rear heat exchanger at a closest portion at which the first surface and the rear heat exchanger are closest to each other is equal to or shorter than a distance between the first surface and the rear heat exchanger at a portion above the closest portion of the second air path.
  • An air conditioner includes a main body that has an inlet and an outlet of air; a front heat exchanger that is disposed inside the main body, on a front side of the main body; a rear heat exchanger that is disposed inside the main body, on a rear side of the main body; a cross flow fan that is disposed inside the main body, and has a rotating shaft along a width of the main body; and a stabilizer and a rear guider that are respectively disposed on a front side and a rear side of an outer peripheral portion of the cross flow fan, and constitute a first air path.
  • the rear guider has a rear guider flange portion disposed between the rear heat exchanger and the cross flow fan.
  • the rear guider flange portion has a first surface that faces the rear heat exchanger, the rear heat exchanger and the first surface of the rear guider flange portion constitute a second air path, the second air path has a section perpendicular to the rotating shaft of the cross flow fan, and in the section, a distance between the first surface and the rear heat exchanger at a closest portion at which the first surface and the rear heat exchanger are closest to each other is equal to or shorter than a distance between the first surface and the rear heat exchanger at a portion above the closest portion of the second air path.
  • the second air path may have a section perpendicular to the rotating shaft of the cross flow fan, and in the section, a distance between the first surface of the rear guider flange portion and the rear heat exchanger may be equal or gradually reduced from a tip end of the rear guider flange portion to the closest portion.
  • the rear guider flange portion may have a projection end portion on a second surface that is a surface on a rear side of the first surface and faces the cross flow fan, the second air path may have a section perpendicular to the rotating shaft of the cross flow fan, and in a case where a distance between a point A that is on the first surface closest to the projection end portion and the rear heat exchanger is set as LA, a distance between any point B on the first surface, the point B being above the point A and below the tip end of the rear guider flange portion, and the rear heat exchanger is set as LB, and a distance between any point C on the first surface, the point C being above the point B and below the tip end of the rear guider flange portion, and the rear heat exchanger is set as LC, in the section, LC ⁇ LB ⁇ LA is satisfied.
  • the air conditioner may further include a water receiving pan that is disposed to be connected to the rear guider flange portion, the second air path may have a section perpendicular to the rotating shaft of the cross flow fan, and in a case where a distance between an intersection D between the rear guider flange portion and the water receiving pan, and the rear heat exchanger is set as LD, and a distance between any point E on the first surface, the point E being above the point D and below the point A, and the rear heat exchanger is set as LE, in the section, LA ⁇ LE ⁇ LD is satisfied.
  • the first surface of the rear guider flange portion may have a planar shape.
  • the planar shape also includes a substantially planar shape.
  • the configuration of the second air path can be simplified, and the reduced flow portion can be easily eliminated. As a result, the turbulence of the airflow is reduced.
  • One or a plurality of protrusions may be disposed on the first surface of the rear guider flange portion.
  • One or a plurality of recesses may be disposed on the first surface of the rear guider flange portion.
  • FIG. 1 is a sectional view illustrating an example of a configuration of air conditioner 100 according to the present exemplary embodiment
  • FIG. 2 is an enlarged sectional view of a portion around rear guider flange portion 106a of air conditioner 100.
  • FIGS. 1 and 2 are sectional views of air conditioner 100 as viewed from the right.
  • air conditioner 100 includes main body 100A.
  • Heat exchanger 104 and cross flow fan 103 are disposed inside main body 100A.
  • Inlet 101 of air is disposed on an upper surface of main body 100A, and outlet 102 is disposed on a front surface of main body 100A.
  • Heat exchanger 104 exchanges heat with the air taken in from inlet 101.
  • the rotating shaft of cross flow fan 103 is disposed in the left-right direction of main body 100A.
  • Cross flow fan 103 generates an airflow which is heat-exchanged in heat exchanger 104 and is to be blown out from outlet 102.
  • Rear guider 106 that guides the flow of air to outlet 102 is disposed on the downstream side of cross flow fan 103.
  • Stabilizer 105 is disposed to face rear guider 106.
  • Rear guider 106 and stabilizer 105 constitute ventilation path 102a (first air path).
  • Heat exchanger 104 is disposed so as to sandwich stabilizer 105, rear guider 106, and cross flow fan 103 from the front and the rear.
  • Heat exchanger 104 includes front heat exchanger 104a and rear heat exchanger 104b.
  • Front heat exchanger 104a is disposed inside main body 100A, on the front side of main body 100A
  • rear heat exchanger 104b is disposed inside main body 100A, on the rear side of main body 100A.
  • Rear guider flange portion 106a for rectifying the air flowing into cross flow fan 103 is provided at an upper end portion of rear guider 106.
  • Water receiving pan 107 is disposed so as to be connected to rear guider flange portion 106a.
  • Rear guider flange portion 106a is disposed above water receiving pan 107.
  • rear guider flange portion 106a is disposed to be sandwiched between rear heat exchanger 104b and cross flow fan 103.
  • Projection end portion 108 is formed on rear guider flange portion 106a.
  • Projection end portion 108 is disposed on second surface 110b that is a surface on the rear side of the first surface and faces the cross flow fan.
  • the distance between rear guider flange portion 106a and cross flow fan 103 is the shortest at projection end portion 108.
  • the airflow flowing through the first air path is rectified by projection end portion 108.
  • a lower end of rear heat exchanger 104b is disposed below projection end portion 108.
  • Rear guider flange portion 106a has a rear guider flange portion facing surface (first surface) 110a which is a surface facing rear heat exchanger 104b.
  • first surface 110a of rear guider flange portion 106a has a substantially planar shape.
  • first surface 110a may have a spherical concave shape or a spherical convex shape.
  • Flange back air path (second air path) 109 is formed by first surface 110a of rear guider flange portion 106a and rear heat exchanger 104b.
  • the air having passed through a portion of rear heat exchanger 104b, which is below rear guider flange portion tip end 106b flows from the lower side to the upper side in flange back air path 109.
  • the air that has passed through flange back air path 109 and the air that has passed through a portion of rear heat exchanger 104b, which is above rear guider flange portion tip end 106b merge at rear guider flange portion tip end 106b, and flow toward cross flow fan 103.
  • flange back air path 109 the portion where the distance between first surface 110a of rear guider flange portion 106a and rear heat exchanger 104b is the shortest is the closest portion between first surface 110a and rear heat exchanger 104b.
  • a portion around the lower end portion of flange back air path 109 is the closest portion.
  • the distance between first surface 110a and rear heat exchanger 104b is the shortest at the portion of point D.
  • the distance between first surface 110a and rear heat exchanger 104b at the closest portion is equal to or shorter than the distance between first surface 110a and rear heat exchanger 104b at a portion above the closest portion in flange back air path 109.
  • flange back air path 109 is configured such that the width of the air path is gradually decreased from rear guider flange portion tip end 106b toward the closest portion.
  • First surface 110a of rear guider flange portion 106a may be provided with a step or the like.
  • a distance between point A on first surface 110a of rear guider flange portion 106a, which is closest to projection end portion 108, and rear heat exchanger 104b is set as LA
  • a distance between any point B on first surface 110a of rear guider flange portion 106a, which is above point A and below rear guider flange portion tip end 106b, and rear heat exchanger 104b is set as LB
  • a distance between any point C on first surface 110a of rear guider flange portion 106a, which is above point B and below rear guider flange portion tip end 106b, and rear heat exchanger 104b is set as LC.
  • a distance between intersection D between rear guider flange portion 106a and water receiving pan 107 and rear heat exchanger 104b is set as LD, and a distance between any point E on first surface 110a of rear guider flange portion 106a, which is above point D and below point A, and rear surface heat exchanger 104b is set as LE.
  • flange back air path 109 is configured such that LC ⁇ LB ⁇ LA ⁇ LE ⁇ LD.
  • flange back air path 109 is configured such that LC ⁇ LB ⁇ LA. Further, flange back air path 109 is configured such that LA ⁇ LE ⁇ LD.
  • flange back air path 109 there is no reduced flow path where the air path width is locally narrowed, and the turbulence of the airflow flowing through flange back air path 109 is reduced. Furthermore, as flange back air path 109 gradually expands, an increase in the wind speed of the airflow flowing through flange back air path 109 is suppressed.
  • flange back air path 109 In flange back air path 109, the airflow flowing toward rear guider flange portion tip end 106b is rectified, and thus the ventilation performance is improved. Furthermore, since the increase in the wind speed of the airflow flowing through flange back air path 109 is suppressed, the ventilation resistance in flange back air path 109 can be reduced, and the ventilation performance is improved.
  • FIG. 3 is a perspective view illustrating an example of a configuration of first surface 110a of rear guider flange portion 106a according to the present exemplary embodiment.
  • FIG. 4 is an enlarged sectional view of a portion of first surface 110a of rear guider flange portion 106a illustrated in FIG. 3 .
  • elements common to the elements in the first exemplary embodiment are denoted by common reference numerals.
  • a plurality of protrusions 111 are provided on the surface of first surface 110a of rear guider flange portion 106a.
  • a small turbulent vortex is generated behind protrusion 111.
  • the frictional resistance of the surface of first surface 110a of rear guider flange portion 106a is reduced, and the ventilation resistance in flange back air path 109 can be reduced. Therefore, the ventilation performance is improved.
  • the shape of protrusion 111 is a circular hill shape.
  • the shape of protrusion 111 may be a conical shape, a triangular pyramid shape, a rectangular shape, or the like.
  • an example in which protrusions 111 are arranged in parallel is illustrated, but the protrusions may be arranged in a staggered manner or randomly, or may be arranged in another manner.
  • FIG. 5 is a perspective view illustrating an example of a configuration of first surface 110a of rear guider flange portion 106a according to the present exemplary embodiment.
  • FIG. 6 is an enlarged sectional view of a portion of first surface 110a of rear guider flange portion 106a illustrated in FIG. 5 .
  • elements common to the elements in the first exemplary embodiment are denoted by common reference numerals.
  • a plurality of recesses 112 are provided on the surface of first surface 110a of rear guider flange portion 106a.
  • a small turbulent vortex is generated behind recess 112.
  • the airflow flowing through flange back air path 109 (refer to FIG. 2 ) is separated from the surface of first surface 110a of rear guider flange portion 106a.
  • the frictional resistance of the surface of first surface 110a of rear guider flange portion 106a is reduced, and the ventilation resistance in flange back air path 109 can be reduced. Therefore, the ventilation performance is improved.
  • the shape of recess 112 is a substantially spherical shape.
  • the shape of recess 112 may be a conical shape, a triangular pyramid shape, a rectangular shape, or the like.
  • an example in which recesses 112 are arranged in parallel is illustrated, but the recesses may be arranged in a staggered manner or randomly, or may be arranged in another manner.
  • FIG. 7 is a perspective view illustrating an example of a configuration of first surface 110a of rear guider flange portion 106a according to the present exemplary embodiment.
  • elements common to the elements in the first exemplary embodiment are denoted by common reference numerals.
  • a plurality of slits (grooves) 113 are provided on the surface of first surface 110a of rear guider flange portion 106a.
  • slit 113 extends in a direction (left-right direction) parallel to the rotating shaft of cross flow fan 103 (refer to FIG. 2 ).
  • FIG. 8 is a perspective view illustrating an example of a configuration of first surface 110a of rear guider flange portion 106a according to the present exemplary embodiment.
  • elements common to the elements in the first exemplary embodiment are denoted by common reference numerals.
  • a plurality of slits (grooves) 113 which extend in a direction perpendicular to the rotating shaft of cross flow fan 103 (refer to FIG. 2 ), are provided on the surface of first surface 110a of rear guider flange portion 106a.
  • slit 113 of the present exemplary embodiment is relatively short. Specifically, slit 113 of the present exemplary embodiment is shorter than slit 113 illustrated in FIG. 7 . Therefore, workability such as cutting at the time of manufacturing the molding die of the rear guider is improved.
  • FIG. 9 is a perspective view illustrating an example of a configuration of first surface 110a of rear guider flange portion 106a according to the present exemplary embodiment.
  • elements common to the elements in the first exemplary embodiment are denoted by common reference numerals.
  • a plurality of ribs 114 are provided on the surface of first surface 110a of rear guider flange portion 106a.
  • rear guider flange portion 106a is reinforced. Therefore, during operation of air conditioner 100, it is possible to prevent the vibration of rear guider flange portion 106a due to an influence of collision of the airflow against rear guider flange portion 106a, vibration of the motor, or the like. Therefore, stable ventilation performance can be exhibited.
  • rib 114 extends in a direction perpendicular to the rotating shaft of cross flow fan 103 (refer to FIG. 2 ). However, rib 114 may extend in a direction parallel to the rotating shaft of cross flow fan 103.
  • Rear guider flange portion 106a may have a configuration in which any one of the protrusion and the recess described in the above-described exemplary embodiments is disposed on the first surface, or may have a configuration in which both the protrusion and the recess are disposed on the first surface.
  • the air conditioner according to the present disclosure can improve the ventilation performance by adjusting the airflow flowing through the flange back air path and reducing the ventilation resistance in the flange back air path.
  • the configuration of the present disclosure can be suitably used for a household air conditioner and a business air conditioner.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP20827831.7A 2019-06-17 2020-06-03 Climatiseur Pending EP3985323A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019112048A JP2020204430A (ja) 2019-06-17 2019-06-17 空気調和機
PCT/JP2020/021947 WO2020255717A1 (fr) 2019-06-17 2020-06-03 Climatiseur

Publications (2)

Publication Number Publication Date
EP3985323A1 true EP3985323A1 (fr) 2022-04-20
EP3985323A4 EP3985323A4 (fr) 2022-08-03

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ID=73837896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20827831.7A Pending EP3985323A4 (fr) 2019-06-17 2020-06-03 Climatiseur

Country Status (4)

Country Link
EP (1) EP3985323A4 (fr)
JP (1) JP2020204430A (fr)
CN (1) CN113439187B (fr)
WO (1) WO2020255717A1 (fr)

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CN107975872A (zh) * 2017-11-24 2018-05-01 珠海格力电器股份有限公司 室内机及应用其的空调器

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