US20200318853A1 - Ceiling-embedded air-conditioning apparatus - Google Patents

Ceiling-embedded air-conditioning apparatus Download PDF

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Publication number
US20200318853A1
US20200318853A1 US16/475,913 US201716475913A US2020318853A1 US 20200318853 A1 US20200318853 A1 US 20200318853A1 US 201716475913 A US201716475913 A US 201716475913A US 2020318853 A1 US2020318853 A1 US 2020318853A1
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US
United States
Prior art keywords
decorative panel
side panels
main body
ceiling
conditioning apparatus
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.)
Abandoned
Application number
US16/475,913
Other languages
English (en)
Inventor
Hironobu SUEHIRO
Tetsuya Tazawa
Keisuke Tomomura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Assigned to MITSUBISHI ELECTRIC CORPORATION reassignment MITSUBISHI ELECTRIC CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUEHIRO, Hironobu, TAZAWA, TETSUYA, TOMOMURA, Keisuke
Publication of US20200318853A1 publication Critical patent/US20200318853A1/en
Abandoned 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
    • F24F13/082—Grilles, registers or guards
    • F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • 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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • F24F2013/205—Mounting a ventilator fan therein

Definitions

  • the present invention relates to a decorative panel of a ceiling-embedded air-conditioning apparatus.
  • corner panels are provided at four corners of a decorative panel attached to a bottom surface of a main body of the air-conditioning apparatus, and includes hook claws and screw fixing portions, and when the corner panels are detached, suspending fittings can be operated (see, for example, Patent Literature 2).
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No.
  • Patent Literature 2 Japanese Unexamined Patent Application Publication No. 2009-41779
  • a main body of a ceiling-embedded air-conditioning apparatus is provided in space above a ceiling of a room, and a decorative panel exposed to indoor space of the room is attached to a lower portion of an opening portion of a main-body case of the air-conditioning apparatus. Therefore, an opening for operation is provided by removing part of the decorative panel, in such a way as to allow suspension fittings to be adjusted in height, with the decorative panel attached to the main-body case.
  • a tool is inserted through the opening for operation, and the suspension fittings are finely adjusted using the tool.
  • maintenance of the ceiling-embedded air-conditioning apparatus includes the following work: work related to an electrical device, such as connection of lines of the electrical device and setting of a switch; and work for checking whether or not leakage occurs in connected part between refrigerant pipes and checking of a heat insulator. Those work cannot be achieved only with the opening for adjustment of the suspension fittings.
  • the present invention has been made to solve the above problem, and an object of the invention is to provide a ceiling-embedded air-conditioning apparatus which allows suspension fittings to be operated, with a decorative panel attached to the ceiling-embedded air-conditioning apparatus, and also allows an electrical device or a refrigerant-pipe connecting unit included in the ceiling-embedded air-conditioning apparatus to be handled, with the decorative panel attached to the ceiling-embedded air-conditioning apparatus.
  • a ceiling-embedded air-conditioning apparatus of an embodiment of the present invention includes: a main body including an indoor heat exchanger and an indoor fan; a decorative panel attached to the main body from an opening side of the main body, an air inlet grille provided on a design side of the decorative panel, and side panels provided on left and right sides of the air inlet grille.
  • the side panels are detachably attached to the decorative panel by the air inlet grille.
  • the decorative panel is provided with an opening portion which allows, when the air inlet grille is in an opened state, suspension metal fittings of the main body to be operated and also an electrical device or a pipe connecting unit provided at the main body to be handled, with the decorative panel attached to the main body, after the side panels are detached from the decorative panel, the air inlet grille being rotated to be in the opened state.
  • the ceiling-embedded air-conditioning apparatus of the embodiment of the present invention includes: the main body including the indoor heat exchanger and the indoor fan; the decorative panel attached to the main body from an opening side of the main body, the air inlet grille provided on a design side of the decorative panel, and side panels provided on left and right sides of the air inlet grille.
  • the side panels are detachably attached to the decorative panel by the air inlet grille.
  • the decorative panel is provided with the opening portion which allows, when the air inlet grille is in an opened state, suspension metal fittings of the main body to be operated and also the electrical device or the pipe connecting unit to be handled, with the decorative panel attached to the main body, after the side panels are detached from the decorative panel, the air inlet grille being rotated to be in the opened state. Therefore, with the decorative panel attached to the main body, the suspension metal fittings can be operated and the electrical device or the pipe connecting unit included in the ceiling-embedded air-conditioning apparatus can be handed.
  • FIG. 1 is a perspective view of a ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 2 is a perspective view of opened states of an air inlet grille and left and light side panels in the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 3 is a perspective view of screw fixing portions for the decorative panel and the left and right side panels in the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 4 is a perspective view of a configuration of each of the side panels in the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 5 is a sectional view of a fixing projection of each side panel in the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 6 illustrates an electrical device and a pipe connecting unit in the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 7 illustrates an example of the configuration of the ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 1 is a perspective view of a ceiling-embedded air-conditioning apparatus according to embodiment 1 of the present invention.
  • FIG. 2 is a perspective view of opened states of an air inlet grille and left and light side panels in embodiment 1 of the present invention.
  • a ceiling-embedded air-conditioning apparatus 1 includes an indoor-unit main body 1 and a decorative panel 2 .
  • side panels 6 are provided on the left and right sides of the decorative panel 6
  • an air inlet grille 5 is provided at a center portion of the decorative panel 2 .
  • One of the side panels 6 has a window for a wireless photoreceptor unit 7 .
  • an indoor unit includes an electrical unit 14 and a pipe connecting unit 15 .
  • the air inlet grille 5 located at the above center portion is attached to the decorative panel such that it can be rotated on an opposite side of a side of the decorative panel where an air outlet 4 is located.
  • the side panels 6 are disposed on the left and right sides of the air inlet grille 5 , and are detachably attached to the decorative panel such that each of the side panels 6 can be rotated about its end side portion on an opposite side of a side where the air inlet grille 5 is located.
  • the side panels 6 can be opened independently of each other.
  • the electrical device provided in the main body 1 is exposed, and can be handled from below.
  • the electrical device includes the wireless photoreceptor unit.
  • the above side panel 6 is provided with a window for wireless light-reception, which allows a wireless signal to be received, without the need to open/close the side panel 6 .
  • the refrigerant-pipe connecting unit for circulating refrigerant in an indoor heat exchanger is exposed. This connecting unit can be touched and handled from below.
  • FIG. 3 is a perspective view of screw fixing portions for the decorative panel and the left and right side panels in embodiment 1 of the present invention.
  • FIG. 4 is a perspective view of a configuration of each of the side panels in embodiment 1 of the present invention.
  • each of the side panels 6 which are attached to left and right sides of the air inlet 4 , is rectangular and provided with hook claws 10 disposed at three locations, that is, left and right end portions and a center portion on one of longitudinal sides of each side panel 6 .
  • the one longitudinal side is connected to the decorative panel.
  • a screw fixing projection 11 having a screw fixing hole is provided at a center portion of the other longitudinal side of each side panel 6 .
  • Fixing claws 12 are provided at respective positions which are close to the above other longitudinal side where the screw fixing projection 11 is provided, and which are located on both short sides of each side panel 12 which are perpendicular to the longitudinal side. As illustrated in FIG. 4 , an incombustible material 13 is provided in an area surrounded by the four sides of each side panel 6 .
  • the hook claws 10 provided on the above one longitudinal side of the side panel 6 are engaged with opening end portions of the decorative panel 4 .
  • the screw fixing projection 11 and the hook claws 10 are located on opposite sides.
  • the screw fixing projection 11 projects from the side panel 6 , and has a screw fixing hole for a screw by which the side panel 6 can be fixed to the decorative panel 2 from below when the side panel 6 is attached to the decorative panel 2 .
  • opening portions 9 provided on the left and right sides of the air inlet are exposed. Through the opening portions 9 , space above a ceiling of a room can be viewed. At surfaces of the side panels 6 which face the respective opening portions 9 of the decorative panel 2 , incombustible materials 13 are provided to receive foreign matter which drops toward or adheres to the decorative panel 2 from the space above the ceiling.
  • FIG. 5 is a sectional view of the screw fixing projection 11 of the left and right side panels in embodiment 1 of the present invention.
  • FIG. 6 illustrates the electrical device and the pipe connecting unit in embodiment 1 of the present invention.
  • the screw fixing projections 11 of the side panels 6 on the left and right sides of air inlets 3 having the air inlet grille 5 are located between the air inlet grille 5 and the main body 2 of the decorative panel.
  • the electrical device 14 , the pipe connecting unit 15 and suspension metal fittings 16 of the ceiling-embedded air-conditioning apparatus (indoor unit) are provided in space located above the ceiling and above the left and right side panels 6 .
  • each of the side panels 6 on the left and right sides of the air inlets 3 having the air inlet grille 5 is attached to the decorative panel 2 as follows: three hook claws 10 provided in the side panel 6 are engaged with the main body of the decorative panel; two fixing claws 12 are then engaged with the main body of the decorative panel; and the side panel 6 is fastened and fixed to the decorative panel 2 by a screw 8 in the screw fixing hole of the screw fixing projection 11 .
  • the air inlet grille 5 is attached to the main body of the decorative panel.
  • the decorative panel 2 can be easily opened in reverse order of the attachment.
  • the suspension metal fittings 16 of the indoor unit main body 1 can be touched and handled from below on the indoor side through any of the opening portions 9 provided in the decorative panel 2 .
  • a technician can put his or her hand into the opening portion 9 while having a tool, and can thus adjust a suspended position of the main body 1 of the indoor unit.
  • the electrical device 14 and the pipe connecting unit 15 of the main body of the indoor unit can be touched and handled through the opening portion 9 . Therefore, the efficiency of installation work is improved.
  • the screw fixing projections 11 of the side panels 6 attached to the left and right sides of the air inlet grille 5 are located between the air inlet grille 5 and the main body 2 of the decorative panel.
  • the screw fixing projections 11 do not appear on the design surface, thus improving the design.
  • the side panels 6 can prevent the spread of fire to the indoor side.
  • FIG. 7 illustrates an example of the configuration of the ceiling-embedded air-conditioning apparatus according to the embodiment of the present invention.
  • an outdoor unit included in a refrigeration cycle is connected to an indoor unit by refrigerant pipes.
  • refrigerant pipes In the example illustrated in FIG. 7 , it is assumed that elements which are the same as those as descried with reference to, for example, FIG. 1 perform the same operations.
  • an outdoor unit 200 and the indoor unit 100 as described with respect to embodiment 1 are connected to each other by a gas refrigerant pipe 300 and a liquid refrigerant pipe 400 .
  • the indoor unit 100 is provided with an indoor heat exchanger 110 that includes, for example, a fin-and-tube heat exchanger and causes heat exchange to be performed between air and refrigerant.
  • the indoor unit 100 is also provided with an indoor fan provided close to the indoor heat exchanger 110 .
  • the indoor fan is, for example, a centrifugal fan. In this case, as the centrifugal fan, a cross-flow fan is employed. The indoor fan sucks air in indoor space, and sends the air to the indoor heat exchanger 110 .
  • the outdoor unit 200 includes a compressor 210 , a four-way valve 220 , an outdoor heat exchanger 230 and an expansion valve 240 .
  • the compressor 210 compresses sucked refrigerant and discharges the compressed refrigerant. It should be noted that although it is not particularly limited, the compressor 210 may be controlled by using, for example, an inverter such that the capacity (the amount of refrigerant to be fed out per unit time) of the compressor 210 is varied by arbitrarily varying an operating frequency.
  • the four-way valve 220 switches the flow of the refrigerant between, for example, that for a cooling operation and that for a heating operation.
  • the outdoor heat exchanger 230 causes heat exchange to be performed between the refrigerant and air (outdoor air).
  • the outdoor heat exchanger 230 operates as an evaporator to evaporate and gasify the refrigerant.
  • the outdoor heat exchanger 230 operates as a condenser to condense and liquefy the refrigerant.
  • the expansion valve 240 which is, for example, an expansion device (flow amount control unit), reduces the pressure of the refrigerant to expand the refrigerant.
  • the opening degree of the expansion valve is adjusted in response to an instruction from, for example, a controller (not illustrated).
  • the indoor heat exchanger 110 causes heat exchange to be performed between, for example, air to be air-conditioned and the refrigerant.
  • the indoor heat exchanger 110 operates as a condenser to condense and liquefy the refrigerant.
  • the indoor heat exchanger 110 operates as an evaporator to evaporate and gasify the refrigerant.
  • the heating operation and the cooling operation can be performed by changing the flow of the refrigerant in a switching manner using the four-way valve 220 of the outdoor unit 200 .

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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)
US16/475,913 2017-03-29 2017-03-29 Ceiling-embedded air-conditioning apparatus Abandoned US20200318853A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/012899 WO2018179136A1 (ja) 2017-03-29 2017-03-29 天井埋込形空気調和機

Publications (1)

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US20200318853A1 true US20200318853A1 (en) 2020-10-08

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US16/475,913 Abandoned US20200318853A1 (en) 2017-03-29 2017-03-29 Ceiling-embedded air-conditioning apparatus

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US (1) US20200318853A1 (ja)
EP (1) EP3604965A4 (ja)
JP (1) JPWO2018179136A1 (ja)
CN (1) CN208750981U (ja)
WO (1) WO2018179136A1 (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10921019B2 (en) * 2017-03-14 2021-02-16 Mitsubishi Electric Corporation Ceiling concealed air-conditioning apparatus
WO2020240849A1 (ja) * 2019-05-31 2020-12-03 三菱電機株式会社 空気調和機の室内機、及び室内機の付加装置
US11536467B2 (en) * 2019-09-27 2022-12-27 Air Innovations, Inc. Ceiling mounted evaporator blower with swing up hinged installation
JP7204944B2 (ja) * 2019-11-29 2023-01-16 三菱電機株式会社 冷凍サイクルユニット及び冷凍サイクル装置
WO2021171503A1 (ja) 2020-02-27 2021-09-02 日立ジョンソンコントロールズ空調株式会社 天井埋込型空気調和機

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05264059A (ja) * 1992-03-19 1993-10-12 Toshiba Corp 天井埋込み型空気調和機
JP3246408B2 (ja) * 1997-09-30 2002-01-15 松下電器産業株式会社 天井埋込形空気調和機
JP2001174050A (ja) * 1999-12-20 2001-06-29 Fujitsu General Ltd 天井埋込形空気調和機
JP4226864B2 (ja) * 2002-08-30 2009-02-18 東芝キヤリア株式会社 スライド式ロック装置および空気調和装置
JP5011022B2 (ja) 2007-08-06 2012-08-29 三洋電機株式会社 天井埋込型空気調和装置
JP4341713B2 (ja) * 2007-09-12 2009-10-07 ダイキン工業株式会社 空気調和装置の室内機
JP2009079819A (ja) * 2007-09-26 2009-04-16 Fujitsu General Ltd 天井埋込形空気調和機
JP5440639B2 (ja) 2012-03-26 2014-03-12 ダイキン工業株式会社 空気調和装置の室内機
JP5692136B2 (ja) * 2012-03-26 2015-04-01 ダイキン工業株式会社 空気調和機
JP6056996B1 (ja) * 2016-02-17 2017-01-11 積水ハウス株式会社 天井埋め込み装置の取付構造

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Publication number Publication date
EP3604965A4 (en) 2020-03-25
CN208750981U (zh) 2019-04-16
JPWO2018179136A1 (ja) 2019-11-07
EP3604965A1 (en) 2020-02-05
WO2018179136A1 (ja) 2018-10-04

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