WO2022029891A1 - 空気調和機 - Google Patents

空気調和機 Download PDF

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Publication number
WO2022029891A1
WO2022029891A1 PCT/JP2020/029840 JP2020029840W WO2022029891A1 WO 2022029891 A1 WO2022029891 A1 WO 2022029891A1 JP 2020029840 W JP2020029840 W JP 2020029840W WO 2022029891 A1 WO2022029891 A1 WO 2022029891A1
Authority
WO
WIPO (PCT)
Prior art keywords
control box
air conditioner
housing
heat exchanger
blower
Prior art date
Application number
PCT/JP2020/029840
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
昭宏 若▲松▼
文人 北村
卓也 村上
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 JP2022541378A priority Critical patent/JP7459258B2/ja
Priority to PCT/JP2020/029840 priority patent/WO2022029891A1/ja
Publication of WO2022029891A1 publication Critical patent/WO2022029891A1/ja

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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
    • F24F13/20—Casings or covers

Definitions

  • This disclosure relates to the structure of the air conditioner, and particularly to the arrangement of the control box.
  • a structure in which a motor and a fan are connected by a pulley and a belt, and a control box is arranged in the space under the drain pan separated from the air passage.
  • the air conditioner cools the inverter board inside the control box by arranging the heat sink of the control box in the air passage (for example, Patent Document 1).
  • a control box on which an inverter board is mounted is arranged on the front side of the blower arranged in the secondary side region downstream of the heat exchanger.
  • the control box is screwed and fixed to the beam of the housing at the four corners, and is arranged so as to hide a part of the blower when viewed from the front of the housing in which the air outlet is arranged.
  • the control box needs to be removed from the housing when the fan and the motor inside the housing are maintained and the fan and the like are cleaned.
  • the inside of the air conditioner should be cleaned regularly. Therefore, in the air conditioner disclosed in Patent Document 1, there is a problem that the cleaning work becomes complicated and the efficiency of the cleaning work is lowered.
  • the present disclosure is to solve the above-mentioned problems, and an object of the present invention is to provide an air conditioner that does not hinder the cleaning work inside the housing while ensuring the cooling inside the control box.
  • the air conditioner of the present disclosure includes a heat exchanger installed inside the housing, a drain pan provided below the heat exchanger, a blower arranged above the heat exchanger, and the housing.
  • the control box is provided with a control box to which the internal wiring of the above is connected, and the control box is arranged downstream of the heat exchanger in the air passage in which the blower and the heat exchanger are arranged.
  • control box since the control box is arranged as described above, the control box hinders the cleaning work when cleaning the inside of the housing while ensuring the cooling of the base inside the control box. do not do.
  • FIG. 1 It is a perspective view which shows the air conditioner 100 which concerns on Embodiment 1.
  • FIG. 2 It is a perspective view which removed the front plate 2 of the air conditioner 100 of FIG.
  • FIG. 3 is a front view showing a state in which the fan casing 50 is removed.
  • FIG. 1 It is a perspective view which shows the appearance of the control box 8 which concerns on Embodiment 1.
  • FIG. It is a perspective view of the state which removed the control box cover 8b from the control box 8 of FIG. It is sectional drawing of the air conditioner 100 which concerns on Embodiment 1.
  • FIG. 8 It is a perspective view of the state which pulled out the control box 8 which concerns on Embodiment 1.
  • FIG. It is a perspective view of the state in which the front plate 2 of the air conditioner 200 which concerns on Embodiment 2 is removed. It is a perspective view of the state which the side panel 3a of the air conditioner 200 which concerns on Embodiment 2 is removed.
  • FIG. FIG. 11 is a perspective view showing a state in which the control box 208 of FIG. 11 is opened to the front of the unit.
  • FIG. 1 is a perspective view showing an air conditioner 100 according to the first embodiment.
  • FIG. 2 is a perspective view with the front plate 2 of the air conditioner 100 of FIG. 1 removed.
  • the air conditioner 100 according to the first embodiment includes a blower 5, a heat exchanger 6, and a drain pan 7 for recovering condensed water from the heat exchanger 6 inside the housing 1.
  • the air conditioner 100 takes in air from the suction port 20 formed in the front plate 2b of the housing 1.
  • a heat exchanger 6 is arranged inside the suction port 20.
  • an air passage is formed from the suction port 20 formed on the front plate 2 to the air outlet 40 formed on the top plate 4.
  • the heat exchanger 6 is arranged on the back side of the suction port 20 when viewed from the side where the front plate 2 of the housing 1 is arranged.
  • the blower 5 includes two blowers 5a and 5b, is located above the heat exchanger 6 and is located between the outlet 40 and the heat exchanger 6.
  • a fan 51 see FIG. 4
  • a motor 9 see FIG. 3
  • the air that has flowed in from the suction port 20 passes through the heat exchanger 6 that is inclined and arranged inside the housing 1, and flows upward inside the housing 1.
  • the air that has passed through the heat exchanger 6 flows into the inside of the fan casing 50 of the blower 5, and is blown out from the outlet 40 by the fan 51.
  • the drain pan 7 is arranged so as to be able to collect the water flowing down below the heat exchanger 6 which is inclined and arranged inside the housing 1.
  • the fan 51 is composed of a sirocco fan.
  • FIG. 3 is a front view showing the structure of the secondary side region of the heat exchanger 6 of the air conditioner 100 according to the first embodiment.
  • FIG. 4 is a front view showing a state in which the fan casing 50 is removed in FIG.
  • the secondary side region of the heat exchanger 6 means a region in which the air that has passed through the heat exchanger 6 exists inside the housing 1.
  • the primary side region of the heat exchanger 6 means a region in which air exists before passing through the heat exchanger 6. That is, the primary side region is a region upstream of the heat exchanger 6 in the air passage inside the housing 1.
  • the secondary side region is a region downstream of the heat exchanger 6 in the air passage inside the housing 1.
  • a motor 9, a fan 51 directly connected to the motor 9, and a fan casing 50 that covers the circumference of the fan 51 and is fixed to the top plate 4 are installed.
  • two blowers 5a and 5b are arranged in the x direction.
  • the control box 8 is arranged side by side with the blower 5 in the horizontal direction of these blowers 5, that is, along the x-axis. Since the control box 8 is arranged on the side of the blower 5, it is not necessary to remove the control box 8 from the air conditioner 100 when the front plate 2 is removed to maintain the area around the blower 5, and maintenance workability is improved. improves.
  • the fan casing 50 is divided in the front-rear direction of the air conditioner 100 and is detachably configured, so that maintenance such as cleaning of the internal fan 51 is possible.
  • the front-rear direction of the air conditioner 100 is a direction along the z-axis shown in FIGS. 1 and 2.
  • a drain pan 7 is arranged in the primary side region of the heat exchanger 6. Dust and dust easily adhere to the heat exchanger 6 and the drain pan 7 due to the condensed water. Therefore, the primary side region of the heat exchanger 6 is frequently cleaned.
  • the control box 8 When the control box 8 is installed above the drain pan 7 in the primary side region of the heat exchanger 6 in the air conditioner 100, the control box 8 interferes with the cleaning of the heat exchanger 6 and the drain pan 7, and the cleaning work is performed. It gets complicated. Further, when a large amount of washing water is applied to the control box 8 in the washing work, the water invades the inside of the control box 8. This causes a failure of the air conditioner 100, so that the control box 8 needs to be cured during the cleaning work.
  • FIG. 5 is a perspective view showing the appearance of the control box 8 according to the first embodiment.
  • FIG. 6 is a perspective view showing a state in which the control box cover 8b is removed from the control box 8 of FIG.
  • the control box 8 has an L shape when viewed from the top surface side of the air conditioner 100.
  • the control box 8 has an L-shape, and the region on the front side in the z direction is formed wider in the x direction than the region on the back side in the z direction. Therefore, in the control box 8, the boards that are often operated in the field where the air conditioner 100 is installed are arranged on the front side in the control box 8, and the boards that are not operated in the field are on the back side. Have been placed.
  • the air conditioner 100 can save space in the arrangement of the control box 8 in the housing 1.
  • the terminal block 80 to which the wiring connected to the outside of the control box 8 and the wiring connected to each board is connected is in front of the control box 8 in the z direction. It is located in the area on the side.
  • the terminal block mounting portion 8d is screwed and fixed to the control box main body 8a, and is detachably configured from the control box main body 8a. Further, the wiring connecting the terminal block 80 and the boards inside the control box 8 is connected by a connector, and is removable from at least one of the terminal block 80 and the boards.
  • the control box left side panel 8e is screwed to the control box main body 8a and is removable.
  • the internal wiring has a wiring length with a surplus so that tension is not applied when it is removed.
  • FIG. 7 is a cross-sectional view of the air conditioner 100 according to the first embodiment.
  • FIG. 7 is a cross-sectional view of the control box 8 as viewed from the blower 5.
  • the control box 8 can slide in the front-rear direction of the housing 1, that is, along the z-axis due to the slide structure. Therefore, the control box 8 can be pulled out in the front direction of the housing 1 from which the front plate 2 has been removed during maintenance.
  • a slide rail 8f is fixed to the bottom surface of the control box 8.
  • the slide rail 8f is formed by bending a plate material so as to have a U-shape, and is welded to the control box main body 8a.
  • the slide rail 8f When viewed from the front of the air conditioner 100, the slide rail 8f has two plate-shaped members 8k extending downward from both ends of the plate-shaped joint portion joined to the bottom surface of the control box main body 8a.
  • the two plate-shaped members 8k of the slide rail 8f extend in the z direction and are provided with elongated holes 8g on the plate surface arranged in the x direction.
  • the housing 1 is provided with a Z-shaped rail 10 in the cross-sectional view of FIG. 7 on the internal beam member 30.
  • the rail 10 is fixed to the beam member 30.
  • the rail 10 includes a first portion 10a extending in the z direction from the beam member 30, a second portion 10b extending in the y direction from the end of the first portion 10a, and a third portion extending in the z direction from the upper end of the second portion 10b. 10c and.
  • the end portion of the third portion 10c in the z direction is a fixed portion 10d.
  • the slide rail 8f of the control box 8 and the rail 10 fixed to the housing 1 have a structure that can be fixed by screwing from the side surface. Further, the slide rail 8f of the control box 8 is formed with an elongated hole 8g penetrating the side surface facing the x direction. The elongated hole 8g is formed to have a length corresponding to the slide amount of the control box 8 in the z direction. The control box 8 can be slid along the z-axis by penetrating the elongated hole 8g in the x direction and loosening the screw 8h screwed into the rail 10.
  • control box 8 By making the control box 8 slidable in the front-rear direction of the housing 1, the operator can maintain the board without removing the control box 8 from the air conditioner 100. Further, when the front plate 2 of the housing 1 is removed and the inside of the housing 1 is viewed, the area hidden by the control box 8 can be cleaned. Further, when the control box 8 is pulled out toward the front side in the z direction, the control box 8 can be fixed by tightening the screw 8h of the slide rail 8f that has been loosened. There is no need to prepare anything else.
  • FIG. 8 is a perspective view of a state in which the control box 8 according to the first embodiment is pulled out.
  • the slide rail is used without removing the wiring from the terminal block 80.
  • the control box 8 can be pulled out along the 8f.
  • the control box left side panel 8e is screwed to the control box main body 8a.
  • the left side surface of the control box 8 can be opened.
  • access to the substrates inside the control box 8 is facilitated, and the workability of the maintenance of the control box 8 is improved.
  • the refrigerant pipe from the outdoor unit (not shown) and the refrigerant pipe of the indoor unit are connected under the drain pan 7.
  • Embodiment 2 is a modification of the arrangement and mounting structure of the control box 8 of the air conditioner 100 according to the first embodiment. In the second embodiment, the differences from the first embodiment will be mainly described.
  • FIG. 9 is a perspective view of the air conditioner 200 according to the second embodiment with the front plate 2 removed.
  • the air conditioner 200 according to the second embodiment has a different arrangement of the control box 8 from the air conditioner 100 according to the first embodiment.
  • the control box 208 is arranged in the secondary side region of the heat exchanger 6 and is arranged between the blower 5 and the front plate 2. That is, the control box 208 and the blower 5 are arranged in parallel along the z-axis, and the control box 208 is arranged on the front side in the z direction with respect to the blower 5.
  • the inverter board can be cooled while cleaning the heat exchanger 6 and the drain pan 7. It is unlikely that a large amount of water will be applied to the water.
  • FIG. 10 is a perspective view of the air conditioner 200 according to the second embodiment with the side panel 3a removed.
  • FIG. 10 shows a state seen from the back side, which is the surface opposite to the front side to which the front plate 2 of the housing 1 is attached.
  • the heat sink 8c for cooling the inverter board is installed on the side surface 208i facing the blower 5 of the control box 208, and the air passing through the heat exchanger 6 flows. It is configured as follows.
  • control box 208 and the housing 1 are connected by a hinge structure in which the control box 208 is rotatable and rotatable.
  • the blower 5 installed behind the control box 208 of the housing 1 can be accessed from the front side of the housing 1, and the area around the blower 5 can be easily cleaned.
  • a wiring hole for taking the wiring connected to the control box 208 into the control box 208 is provided around the portion where the hinge metal fitting 13 of the control box 208 is arranged.
  • the wiring connected to the control box 208 is a motor wiring inside the housing 1 or a sensor wire such as a thermistor.
  • the control box 208 can be opened to the outside without making a large surplus in the length of the wiring.
  • the pillar 14, the lower beam 11, and the upper beam 12 to which the control box 208 is fixed via the hinge metal fitting 13 may be collectively referred to as a structural member.
  • the air conditioner 200 connects the refrigerant pipe from the outdoor unit and the refrigerant pipe of the indoor unit under the drain pan 7 as in the first embodiment. By routing the refrigerant pipe in this way, obstacles above the drain pan 7 are eliminated, and the workability of cleaning the primary side region of the heat exchanger 6 is improved.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
PCT/JP2020/029840 2020-08-04 2020-08-04 空気調和機 WO2022029891A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022541378A JP7459258B2 (ja) 2020-08-04 2020-08-04 空気調和機
PCT/JP2020/029840 WO2022029891A1 (ja) 2020-08-04 2020-08-04 空気調和機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/029840 WO2022029891A1 (ja) 2020-08-04 2020-08-04 空気調和機

Publications (1)

Publication Number Publication Date
WO2022029891A1 true WO2022029891A1 (ja) 2022-02-10

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Application Number Title Priority Date Filing Date
PCT/JP2020/029840 WO2022029891A1 (ja) 2020-08-04 2020-08-04 空気調和機

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JP (1) JP7459258B2 (enrdf_load_stackoverflow)
WO (1) WO2022029891A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2023148864A1 (enrdf_load_stackoverflow) * 2022-02-03 2023-08-10
WO2024180716A1 (ja) * 2023-03-01 2024-09-06 三菱電機株式会社 空気調和機

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006145082A (ja) * 2004-11-17 2006-06-08 Matsushita Electric Ind Co Ltd 空気調和機
JP2009079871A (ja) * 2007-09-27 2009-04-16 Fujitsu General Ltd 空気調和機の室外機
JP2013057428A (ja) * 2011-09-07 2013-03-28 Mitsubishi Electric Corp 空気調和装置の室内機
WO2016075817A1 (ja) * 2014-11-14 2016-05-19 三菱電機株式会社 空気調和装置の室内機
WO2017122343A1 (ja) * 2016-01-15 2017-07-20 三菱電機株式会社 空調用室内機
WO2017134720A1 (ja) * 2016-02-01 2017-08-10 三菱電機株式会社 空気調和装置
JP2018185121A (ja) * 2017-04-27 2018-11-22 東芝キヤリア株式会社 空気調和機の室内ユニット

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH029720U (enrdf_load_stackoverflow) * 1988-07-05 1990-01-22
JPH05141715A (ja) * 1991-11-21 1993-06-08 Hitachi Ltd 空気調和機の電気品箱

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006145082A (ja) * 2004-11-17 2006-06-08 Matsushita Electric Ind Co Ltd 空気調和機
JP2009079871A (ja) * 2007-09-27 2009-04-16 Fujitsu General Ltd 空気調和機の室外機
JP2013057428A (ja) * 2011-09-07 2013-03-28 Mitsubishi Electric Corp 空気調和装置の室内機
WO2016075817A1 (ja) * 2014-11-14 2016-05-19 三菱電機株式会社 空気調和装置の室内機
WO2017122343A1 (ja) * 2016-01-15 2017-07-20 三菱電機株式会社 空調用室内機
WO2017134720A1 (ja) * 2016-02-01 2017-08-10 三菱電機株式会社 空気調和装置
JP2018185121A (ja) * 2017-04-27 2018-11-22 東芝キヤリア株式会社 空気調和機の室内ユニット

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2023148864A1 (enrdf_load_stackoverflow) * 2022-02-03 2023-08-10
WO2024180716A1 (ja) * 2023-03-01 2024-09-06 三菱電機株式会社 空気調和機

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JP7459258B2 (ja) 2024-04-01

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