WO2020053952A1 - 空気調和機の室内機 - Google Patents

空気調和機の室内機 Download PDF

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Publication number
WO2020053952A1
WO2020053952A1 PCT/JP2018/033586 JP2018033586W WO2020053952A1 WO 2020053952 A1 WO2020053952 A1 WO 2020053952A1 JP 2018033586 W JP2018033586 W JP 2018033586W WO 2020053952 A1 WO2020053952 A1 WO 2020053952A1
Authority
WO
WIPO (PCT)
Prior art keywords
indoor unit
valve
air conditioner
main body
indoor
Prior art date
Application number
PCT/JP2018/033586
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
紘己 毛呂
雅晃 丸山
隆弘 小松
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 AU2018440914A priority Critical patent/AU2018440914B2/en
Priority to DE112018007975.9T priority patent/DE112018007975T5/de
Priority to JP2020546573A priority patent/JP6945749B2/ja
Priority to PCT/JP2018/033586 priority patent/WO2020053952A1/ja
Publication of WO2020053952A1 publication Critical patent/WO2020053952A1/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
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/242—Sound-absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/10—Pressure
    • F24F2140/12—Heat-exchange fluid pressure

Definitions

  • the present invention relates to an indoor unit of an air conditioner, and more particularly, to a technique suitable for changing from an indoor unit of a direct expansion type air conditioner to an indoor unit of a chiller type air conditioner.
  • Patent Document 1 a refrigerant pipe used in a direct expansion type is reused as a chiller type heat medium pipe, thereby simplifying a pipe connection operation at the time of renewal.
  • an indoor unit of a chiller type air conditioner an indoor heat exchanger, a flow control valve for adjusting a flow rate of a heat medium flowing through the indoor heat exchanger, and a pressure of a heat medium at an outlet of the indoor heat exchanger are measured.
  • an indoor unit provided with a pressure sensor (see, for example, Patent Document 2).
  • Patent Document 1 Although the refrigerant pipe is reused, the indoor unit used in the direct expansion type is removed and an indoor unit is newly installed. As described above, Patent Document 1 is a renewal technique that does not reuse a direct expansion type indoor unit.
  • the present invention has been made in view of such a point, and an air conditioner indoor unit that can be renewed from an existing direct expansion type indoor unit to a chiller type without complicating work on site.
  • the purpose is to provide.
  • the indoor unit of the air conditioner according to the present invention has an indoor unit main body having an indoor heat exchanger that exchanges heat with air and a heat medium, and a connection port provided in the indoor unit main body and communicating with the indoor heat exchanger. It has a flow rate adjusting valve that adjusts the flow rate of the heat medium flowing into the indoor heat exchanger and a pressure sensor that measures the pressure of the heat medium, and includes a valve kit that is separate from the indoor unit main body. An external pipe through which the medium flows is connected to the connection port of the indoor unit main body.
  • an existing direct expansion type indoor unit can be renewed in a chiller type without complicating work on site.
  • FIG. 1 is a perspective view of an indoor unit of an air conditioner according to an embodiment of the present invention. It is a top view of the indoor unit of the air conditioner concerning an embodiment of this invention.
  • FIG. 3 is an exploded perspective view of a valve kit in the indoor unit of the air conditioner according to the embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the indoor unit of the air conditioner according to the embodiment of the present invention in a state where a valve kit is partially assembled.
  • FIG. 3 is an explanatory view for mounting a valve kit to an indoor unit main body in the indoor unit of the air conditioner according to the embodiment of the present invention.
  • FIG. 1 is a diagram illustrating a configuration of an air conditioner including an indoor unit according to an embodiment of the present invention.
  • the air conditioner shown in FIG. 1 is a chiller-type air conditioner, and includes an indoor unit 1, an outdoor unit 100, and a heat exchanger 200.
  • the indoor unit 1 shown in FIG. 1 has a configuration in which the renewal from the direct expansion type to the chiller type has been completed.
  • the direct expansion type is one in which the refrigerant flowing in the refrigeration cycle is directly sent to the indoor heat exchanger 30a to perform indoor air conditioning.
  • a heating medium is heated or cooled by a refrigerant flowing in a refrigeration cycle, and the heating medium is sent to the indoor heat exchanger 30a to perform indoor air conditioning.
  • the indoor unit 1 includes an indoor unit main body 30 including an indoor heat exchanger 30a that performs heat exchange between air and a heat medium, and a valve kit 70.
  • the indoor unit main body 30 has an existing configuration used in a direct expansion type air conditioner.
  • the valve kit 70 is newly provided when the indoor unit is renewed from the direct expansion type to the chiller type.
  • the valve kit 70 includes a flow control valve 76 and a pressure sensor 77. The valve kit 70 will be described later in detail.
  • the outdoor unit 100 and the heat exchanger 200 are connected by the refrigerant pipe 10 and the refrigerant pipe 11, and the refrigerant circulates in the order of the outdoor unit 100, the refrigerant pipe 10, the heat exchanger 200, and the refrigerant pipe 11.
  • the heat exchanger 200 and the indoor unit main body 30 are connected by the heat medium pipe 20
  • the indoor unit main body 30 and the valve kit 70 are connected by the heat medium pipe 21
  • the valve kit 70 and the heat exchanger 200 are connected by heat. They are connected by a medium pipe 22.
  • the heat medium circulates in the order of the heat exchanger 200, the heat medium pipe 20, the indoor unit main body 30, the heat medium pipe, the valve kit 70, and the heat medium pipe 22.
  • water or antifreeze is used as the heat medium.
  • Heat exchange between the refrigerant and the heat medium is performed in the heat exchanger 200 by the respective flows of the refrigerant and the heat medium. Then, the heat medium heated or cooled by heat exchange with the refrigerant is sent out from the heat exchanger 200 to the indoor unit main body 30, and the heat of the heat medium and the indoor air is transmitted to the indoor heat exchanger 30 a of the indoor unit main body 30. The replacement is performed and the room is air-conditioned.
  • FIG. 2 is a perspective view of the indoor unit of the air conditioner according to the embodiment of the present invention.
  • FIG. 3 is a plan view of the indoor unit of the air conditioner according to the embodiment of the present invention.
  • the indoor unit main body 30 has a ceiling-embedded configuration here, and includes a box 31 having an open lower surface, and a substantially square decorative panel 32 covering an opening on the lower surface of the box 31. Is provided. Inside the box 31, an indoor heat exchanger 30a (see FIG. 1) is arranged.
  • the indoor unit main body 30 is installed using the fixtures 12 in the direction shown in the drawing below the ceiling in the room.
  • the box body 31 is arranged behind the ceiling surface, and the decorative panel 32 is arranged in the indoor space.
  • a suction port 33 for sucking air into the indoor unit main body 30 is provided near the center of the decorative panel 32, and an outlet for blowing out regulated air into the room along four sides of the decorative panel 32 around the suction port 33. 34 are provided.
  • An air vent valve cover 60 is attached to a side surface of the box 31.
  • connection port 40 and a connection port 41 to which an external pipe is connected are provided on the side surface of the box 31 .
  • the valve kit 70 is mounted on the mounting surface 31 a of the box 31.
  • the connection port 40 and the connection port 41 have an existing configuration in the indoor unit main body 30 that has been used as the direct expansion type, and at the time before the renewal, the refrigerant pipe was connected as the external pipe.
  • the heat medium pipes are connected to the connection ports 40 and 41 as external pipes.
  • the heat medium pipe 20 and the heat medium pipe 21 shown in FIG. 1 are connected to the connection port 40 and the connection port 41, respectively.
  • FIG. 2 shows a state in which the inlet-side connecting port 50 and the connecting port 41 of the later-described inlet-side connecting port 50 and outlet-side connecting port 51 of the valve kit 70 are connected by the heat medium pipe 21.
  • the outlet connection port 51 is connected to the heat exchanger 200 via the heat medium pipe 20.
  • connection port 40 is on the inlet side of the heat medium and the connection port 41 is on the outlet side of the heat medium
  • connection port 40 is hereinafter referred to as an inlet side connection port 40
  • connection port 41 is connected to the outlet side.
  • the mouth 41 is hereinafter referred to as an inlet side connection port 40, and the connection port 41 is connected to the outlet side.
  • the indoor unit of the air conditioner used as a direct expansion type is to be changed to a chiller type equipped with a flow control valve and a pressure sensor.
  • the valve kit 70 is used to perform this renewal without complicating the work on site.
  • FIG. 4 is an exploded perspective view of a valve kit in the indoor unit of the air conditioner according to the embodiment of the present invention.
  • FIG. 5 is an exploded perspective view of the indoor unit of the air conditioner according to the embodiment of the present invention in a state where a valve kit is partially assembled. 4 and 5, the following description will be made assuming that the near side is the front side and the far side is the rear side.
  • the valve kit 70 has a valve kit housing 70a composed of a main body case 71 having an open front surface and a main body cover 72 covering the front opening of the main case 71.
  • a valve kit mounting bracket 73 is fixed to the rear surface 71a of the main body case 71, one at each of the left and right sides of the rear surface 71a.
  • a U-shaped pipe 78 is provided in the valve kit housing 70a. Both ends of the pipe 78 protrude outside from the main body case 71 to form an inlet-side connection port 50 and an outlet-side connection port 51.
  • a flow control valve 76 for adjusting the flow rate of the heat medium flowing through the indoor unit main body 30 is attached to the pipe 78.
  • the flow control valve 76 has a valve element (not shown) and a valve motor 76a for driving the valve element.
  • the flow control valve 76 is configured by, for example, a control valve, a throttle valve, an electromagnetic valve, or the like.
  • the valve motor 76a is arranged above the pipe 78.
  • Pressure sensors 77 are attached to the pipe 78 at the upstream and downstream of the flow control valve 76, respectively.
  • the pressure sensor 77 measures the pressure of the heat medium at each of the upstream and downstream of the flow control valve 76. Although two pressure sensors 77 are provided here, one pressure sensor may be provided.
  • the valve kit 70 further includes a drain pan 75 that is disposed below the pipe 78 and receives the drain generated in the valve kit 70.
  • the components such as the flow control valve 76, the pipe 78, the pressure sensor 77, and the drain pan 75 are housed in the valve kit housing 70a in a state covered by two sound absorbing members 74 from the front-back direction.
  • the contact surfaces of the two sound absorbing members 74 that come into contact with the respective components are formed with irregularities according to the external shape of the components, and the components are held in close contact.
  • the sound absorbing material 74 is formed, for example, using a natural material mainly composed of pulp fibers as a sound absorbing material. In this way, by covering the flow control valve 76 and the pipe 78 with the sound absorbing material 74, noise and driving noise due to vibration of these components can be minimized.
  • the sound absorbing material 74 has a heat insulating property, and is configured to prevent the heat of the heat medium from being radiated to the outside.
  • a groove 79 is formed on the outer surface of the sound absorbing member 74 on the front side.
  • the groove 79 is a groove for routing the wiring 80 of the flow rate regulating valve 76 and the wiring 81 of the pressure sensor 77 which are electric components disposed in the valve kit 70.
  • the wiring 80 and the wiring 81 By housing the wiring 80 and the wiring 81 in the groove 79 as shown by the dotted line in FIG. 5, the wiring 80 and the wiring 81 extending from each electric component can be collectively pulled out from the valve kit 70.
  • the wiring 80 and the wiring 81 that are collectively drawn out are connected to the indoor unit main body 30.
  • the refrigerant sealed in the indoor unit main body 30 is collected by an outdoor unit (not shown) of the refrigeration cycle by a pump-down operation. Then, a refrigerant pipe (not shown) of the refrigeration cycle connected to each of the inlet side connection port 40 and the outlet side connection port 41 of the indoor unit main body 30 is removed.
  • valve kit 70 is connected to the indoor unit main body 30. Specifically, first, the valve kit 70 is mounted on the mounting surface 31a of the box 31 of the indoor unit main body 30 as shown in FIG. The following describes the mounting of the box body 31 to the mounting surface 31a, as shown in FIG.
  • FIG. 6 is an explanatory diagram of attachment of the valve kit to the indoor unit main body in the indoor unit of the air conditioner according to the embodiment of the present invention.
  • the valve kit 70 is mounted by fixing the valve kit 70 to the mounting surface 31a by passing screws 90 through the valve kit mounting bracket 73.
  • a valve kit 70 as a completed product is mounted on the mounting surface 31a at the site.
  • the valve kit 70 may be mounted separately from the indoor unit main body 30 and mounted on, for example, a ceiling wall.
  • the outlet connection port 41 of the indoor unit main body 30 and the inlet connection port 50 of the valve kit 70 are connected by the heat medium pipe 21 as shown in FIG. .
  • the indoor unit 1 is renewed from the direct expansion type to the chiller type. That is, simply connecting the valve kit 70 to the existing indoor unit main body 30 allows the chiller-type indoor unit 1 having the flow rate adjusting valve 76 and the pressure sensor 77 to be renewed.
  • the indoor unit 1 includes the indoor unit main body 30 and the valve kit 70 separate from the indoor unit main body 30.
  • the indoor unit main body 30 has an indoor heat exchanger 30a, and a connection port 40 and a connection port 41 communicating with the indoor heat exchanger 30a.
  • the valve kit 70 has a flow control valve 76 and a pressure sensor 77.
  • the indoor unit 1 has a configuration in which one of the connection port 40 and the connection port 41 of the indoor unit main body 30 and the valve kit 70 are connected by a heat medium pipe. In other words, at the site of the renewal work, simply connecting the valve kit 70 to the connection port provided in the existing indoor unit main body 30 using the heat medium pipe, the chiller type having the flow control valve 76 and the pressure sensor 77 is provided. Renewable indoor unit. Therefore, the on-site work can be simplified as compared with the case where the flow control valve 76 and the pressure sensor 77 are separately installed.
  • the flow regulating valve 76, the pressure sensor 77, and the pipe 78 are covered with the sound absorbing material 74. This makes it possible to absorb the driving noise of the valve motor 76a incorporated in the flow control valve 76. Further, vibrations of the flow control valve 76 and the pipe 78 can be absorbed. As described above, by using the sound absorbing member 74, the driving sound and the vibration can be absorbed, and the quiet indoor unit 1 of the air conditioner can be obtained.
  • the valve motor 76a of the flow rate adjusting valve 76 has a regular arrangement position with respect to the flow rate adjustment target pipe as a product specification, and operates accurately by being arranged at the regular arrangement position.
  • the normal position of the valve motor 76a is above the flow rate adjustment target pipe. Therefore, since the sound absorbing member 74 is provided with the concavo-convex shape corresponding to the regular arrangement position, the valve motor 76a can be attached to the regular attachment position without making a mistake in the position.
  • valve motor 76a whose regular arrangement position is above the pipe whose flow rate is to be adjusted has been described, but the valve motor whose regular arrangement position is below the pipe whose flow rate is to be adjusted is used. Is also good.
  • the groove 79 for arranging the wiring 80 of the flow rate adjusting valve 76 and the wiring 81 of the pressure sensor 77 is provided in the sound absorbing material 74, the wiring 80 and the wiring 81 are put together and taken out from the valve kit 70. It can be connected to the indoor unit main body 30. As described above, since a plurality of wirings to be taken out from the valve kit 70 are united, it is possible to minimize the labor of wiring work when mounting the valve kit 70.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Other Air-Conditioning Systems (AREA)
PCT/JP2018/033586 2018-09-11 2018-09-11 空気調和機の室内機 WO2020053952A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2018440914A AU2018440914B2 (en) 2018-09-11 2018-09-11 Indoor unit of air-conditioning apparatus
DE112018007975.9T DE112018007975T5 (de) 2018-09-11 2018-09-11 Inneneinheit einer Klimaanlage
JP2020546573A JP6945749B2 (ja) 2018-09-11 2018-09-11 空気調和機の室内機
PCT/JP2018/033586 WO2020053952A1 (ja) 2018-09-11 2018-09-11 空気調和機の室内機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/033586 WO2020053952A1 (ja) 2018-09-11 2018-09-11 空気調和機の室内機

Publications (1)

Publication Number Publication Date
WO2020053952A1 true WO2020053952A1 (ja) 2020-03-19

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ID=69777971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/033586 WO2020053952A1 (ja) 2018-09-11 2018-09-11 空気調和機の室内機

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JP (1) JP6945749B2 (de)
AU (1) AU2018440914B2 (de)
DE (1) DE112018007975T5 (de)
WO (1) WO2020053952A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022113343A1 (ja) * 2020-11-30 2022-06-02 三菱電機株式会社 空気調和機の室内機、および、それを備えた空気調和機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04165241A (ja) * 1990-10-30 1992-06-11 Sanyo Electric Co Ltd 熱交換装置
JPH09280597A (ja) * 1996-04-09 1997-10-31 Hitachi Ltd 壁掛け形空気調和機
US20140325844A1 (en) * 2003-09-11 2014-11-06 John Chris Karamanos Embedded heat exchanger for heating, ventilation, and air conditioning (hvac) systems and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000346493A (ja) * 1999-06-01 2000-12-15 Mitsubishi Electric Corp 絞り装置、冷凍サイクル装置および空気調和装置
JP3918421B2 (ja) * 2000-09-21 2007-05-23 三菱電機株式会社 空気調和機、空気調和機の運転方法
JP4426257B2 (ja) * 2003-11-14 2010-03-03 大和ハウス工業株式会社 ビルトイン型空気調和機及び空調システム
JP4213725B2 (ja) * 2006-03-31 2009-01-21 三菱電機株式会社 空気調和装置
JP2016217668A (ja) * 2015-05-25 2016-12-22 シャープ株式会社 空気調和機の室外機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04165241A (ja) * 1990-10-30 1992-06-11 Sanyo Electric Co Ltd 熱交換装置
JPH09280597A (ja) * 1996-04-09 1997-10-31 Hitachi Ltd 壁掛け形空気調和機
US20140325844A1 (en) * 2003-09-11 2014-11-06 John Chris Karamanos Embedded heat exchanger for heating, ventilation, and air conditioning (hvac) systems and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022113343A1 (ja) * 2020-11-30 2022-06-02 三菱電機株式会社 空気調和機の室内機、および、それを備えた空気調和機

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AU2018440914B2 (en) 2022-03-10
JPWO2020053952A1 (ja) 2021-05-13
DE112018007975T5 (de) 2021-05-20
AU2018440914A1 (en) 2021-01-21
JP6945749B2 (ja) 2021-10-06

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