WO2018159442A1 - 空気調和機の防カビ方法およびそれを用いた空気調和機 - Google Patents
空気調和機の防カビ方法およびそれを用いた空気調和機 Download PDFInfo
- Publication number
- WO2018159442A1 WO2018159442A1 PCT/JP2018/006438 JP2018006438W WO2018159442A1 WO 2018159442 A1 WO2018159442 A1 WO 2018159442A1 JP 2018006438 W JP2018006438 W JP 2018006438W WO 2018159442 A1 WO2018159442 A1 WO 2018159442A1
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- WIPO (PCT)
- Prior art keywords
- heat exchanger
- air conditioner
- condensed water
- heat
- drain pan
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000002265 prevention Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- 238000009833 condensation Methods 0.000 claims abstract description 21
- 230000005494 condensation Effects 0.000 claims abstract description 21
- 238000001704 evaporation Methods 0.000 claims abstract description 12
- 238000009736 wetting Methods 0.000 claims abstract description 8
- 230000008020 evaporation Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 4
- 230000000843 anti-fungal effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000001954 sterilising effect Effects 0.000 abstract description 25
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 25
- 238000007796 conventional method Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 98
- 238000001816 cooling Methods 0.000 description 28
- 241000894006 Bacteria Species 0.000 description 26
- 239000000428 dust Substances 0.000 description 26
- 238000004140 cleaning Methods 0.000 description 11
- 241000233866 Fungi Species 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 241000589248 Legionella Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- 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
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
- F24F2013/225—Means for preventing condensation or evacuating condensate for evacuating condensate by evaporating the condensate in the cooling medium, e.g. in air flow from the condenser
-
- 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
- F24F2140/20—Heat-exchange fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/22—Cleaning ducts or apparatus
- F24F2221/225—Cleaning ducts or apparatus using a liquid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- Bacteria and mold are heated with dew condensation water.
- the number of bacteria can be reduced by reducing the number of bacteria at a temperature lower than that in a dry state (hereinafter referred to as “wet heat sterilization”). Since the number of bacteria and fungi can be reduced as compared with a state where growth is simply suppressed, the generation of unpleasant odor is prevented.
- the mold prevention method for the air conditioner may be to evaporate the refrigerant in the heat exchanger when the surface of the heat exchanger is wetted.
- the temperature of the heat exchanger decreases, and condensed water is efficiently generated on the surface of the heat exchanger. Sufficient wetting can be ensured on the surface of the heat exchanger.
- FIG. 1 is a conceptual diagram schematically showing the configuration of an air conditioner according to an embodiment of the present invention.
- FIG. 2 is a perspective view schematically showing an appearance of the indoor unit according to the embodiment.
- FIG. 3 is a perspective view schematically showing the configuration of the main body of the indoor unit.
- FIG. 4 is an exploded perspective view schematically showing the structure of the indoor unit.
- FIG. 5 is an enlarged vertical sectional view of the main body of the indoor unit.
- FIG. 6 is a block diagram schematically showing the configuration of the control unit.
- FIG. 7 is a flowchart schematically showing the anti-mold processing operation.
- FIG. 1 schematically shows a configuration of an air conditioner 11 according to an embodiment of the present invention.
- the air conditioner 11 includes an indoor unit 12 and an outdoor unit 13.
- the indoor unit 12 is installed in an indoor space in a building, for example.
- the indoor unit 12 may be installed in a space corresponding to the indoor space.
- An indoor heat exchanger 14 is incorporated in the indoor unit 12.
- the outdoor unit 13 includes a compressor 15, an outdoor heat exchanger 16, an expansion valve 17, and a four-way valve 18.
- the indoor heat exchanger 14, the compressor 15, the outdoor heat exchanger 16, the expansion valve 17 and the four-way valve 18 form a refrigeration circuit 19.
- the outdoor unit 13 may be installed outdoors that can exchange heat with outdoor air.
- the indoor unit 12 includes up and down wind direction plates 25a and 25b.
- the up-and-down air direction plates 25 a and 25 b define the direction of the air flow blown out from the indoor unit 12. Details of the structure of the up and down wind direction plates 25a and 25b will be described later.
- the first driven gear 51 meshes with a first drive gear (not shown) mounted on the main body 28a, and similarly, the second driven gear 52 is mounted on the main body 28a. Engage with two drive gears (not shown).
- a drive source such as an electric motor is individually connected to each drive gear.
- the first driven gear 51 and the second driven gear 52 rotate individually according to the driving force supplied from the individual driving sources.
- the filter cleaning unit 43 includes a cleaning brush 66.
- the cleaning brush 66 is stored in the upper dust box 45.
- the cleaning brush 66 includes a brush pedestal 67.
- the brush pedestal 67 can rotate around the horizontal axis 68 by the driving force from the first driven gear 51.
- the brush bristles 69 are arranged on a cylindrical surface of the brush pedestal 67 over a predetermined center angle range.
- the flocking range of the brush bristles 69 has a spread across the air filter 35 in the axial direction of the brush pedestal 67.
- the cleaning brush 66 brings the bristles 69 into contact with the air filter 35 at a predetermined rotational position, and separates the bristles 69 from the air filter 35 at other than the rotational position.
- heat is transmitted from the indoor heat exchanger 14 to the connecting body 73 and the first drain pan 75a and the second drain pan 75b.
- the condensation of the refrigerant is executed until the connecting body 73 and the first drain pan 75a and the second drain pan 75b reach the set temperature.
- the temperatures of the connecting body 73 and the first drain pan 75a and the second drain pan 75b follow the temperature rise of the indoor heat exchanger 14 with a delay. Based on the temperature detected by the temperature sensor 26a, it may be determined that the set temperature has been reached when the indoor heat exchanger 14 has reached a predetermined temperature longer than a predetermined time.
- first drain pan 75a and the second drain pan 75b are heated to a sufficiently set temperature, the bacteria and mold are sufficiently heated and wet heat sterilized in the condensed water stored in the first drain pan 75a and the second drain pan 75b. .
- the anti-mold processing unit 81 observes the operation of the compressor 15 in step S6. If an overload of the compressor 15 is detected in heating up to the set temperature, the anti-mold processing unit 81 lowers the discharge temperature of the compressor 15 in step S7 and ends the heating operation. If no overload is detected, the heating operation is continued until it is determined in step S5 that the wet heat sterilization is completed.
- a drying process in the main body 28a may be performed following the wet heat sterilization process.
- rotation of the blower fan 24 is started while the heating of the indoor heat exchanger 14 is maintained.
- the anti-mold processing unit 81 supplies a command signal to the blower fan control unit 85 during the rotation operation of the blower fan 24.
- the command signal specifies the rotational speed of the blower fan 24.
- the rotation of the blower fan 24 promotes evaporation of heated condensed water.
- the blower outlet 33 may be closed by the up-and-down wind direction plates 25a and 25b.
- the anti-mold processing unit 81 supplies a command signal to the wind direction control unit 86.
Landscapes
- 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)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Abstract
Description
14…熱交換器(室内熱交換器)
14a…前側体
14b…後側体
15…圧縮機
24…(室内機の)送風ファン
73…連結体
75a…ドレンパン(第1ドレンパン)
75b…ドレンパン(第2ドレンパン)
76…伝熱部材(第3伝熱部材)
77…伝熱部材(第4伝熱部材)
図1は本発明の一実施形態に係る空気調和機11の構成を概略的に示す。空気調和機11は室内機12および室外機13を備える。室内機12は例えば建物内の室内空間に設置される。その他、室内機12は室内空間に相当する空間に設置されればよい。室内機12には室内熱交換器14が組み込まれる。室外機13には圧縮機15、室外熱交換器16、膨張弁17および四方弁18が組み込まれる。室内熱交換器14、圧縮機15、室外熱交換器16、膨張弁17および四方弁18は冷凍回路19を形成する。室外機13は、室外空気との熱交換が可能な屋外に設置されればよい。
図2は一実施形態に係る室内機12の外観を概略的に示す。室内機12の本体(筐体)28aにはアウターパネル28bが覆い被さる。本体28aの下面には吹出口29が形成される。吹出口29は室内に向けて開口する。本体28aは例えば室内の壁面に固定されることができる。室内熱交換器14で冷気または暖気が生成され、冷気または暖気の気流は吹出口29から吹き出す。
図6に示されるように、制御部27は、冷房運転の動作を管理する冷房運転部78と、暖房運転の動作を管理する暖房運転部79と、防カビ処理の動作を管理する防カビ処理部81とを備える。これら冷房運転部78、暖房運転部79および防カビ処理部81には弁切替制御部82、開度制御部83、圧縮機制御部84、送風ファン制御部85および風向制御部86が接続される。弁切替制御部82は四方弁18に接続される。弁切替制御部82は四方弁18に向けて制御信号を出力する。四方弁18は受信した制御信号に応じて第1位置および第2位置の間で切り替えられる。第1位置では四方弁18は第2口18bおよび第3口18cを相互に接続し第1口18aおよび第4口18dを相互に接続する。第2位置では四方弁18は第2口18bおよび第4口18dを相互に接続し第1口18aおよび第3口18cを相互に接続する。弁切替制御部82は、冷房運転部78、暖房運転部79または防カビ処理部81からの指示に応じて、第1位置または第2位置を特定する制御信号を生成する。
次に、空気調和機11で実施される防カビ処理動作を説明する。防カビ処理動作の実行にあたって制御部27の防カビ処理部81は作動する。防カビ処理動作は例えば冷房運転後に室内熱交換器14の温度および湿度に基づき実行されればよい。こうした防カビ処理動作の実行にあたって、防カビ処理部81には、冷房運転の終了を知らせる通知が冷房運転部78から供給される。
Claims (7)
- 冷媒の蒸発に伴う結露水で熱交換器の表面を濡らす工程と、
冷媒の凝縮に基づき前記熱交換器を加熱し、結露水を蒸発させずに前記熱交換器を加熱する工程と、
を備えることを特徴とする空気調和機の防カビ方法。 - 請求項1に記載の空気調和機の防カビ方法において、加熱時の前記熱交換器の温度は摂氏45度以上に設定されることを特徴とする空気調和機の防カビ方法。
- 請求項1~2のいずれか1項に記載の空気調和機の防カビ方法において、前記熱交換器は空気調和機に含まれる送風ファンの回転軸よりも前側に配置される前側体および送風ファンの回転軸よりも後側に配置される後側体を含み、前記熱交換器の加熱にあたって、前記熱交換器の前側体および後側体を相互に連結する連結体に前記熱交換器から熱を伝え、前記連結体が設定温度に達するまで前記凝縮を実施することを特徴とする空気調和機の防カビ方法。
- 請求項1~3のいずれか1項に記載の空気調和機の防カビ方法において、前記熱交換器の加熱にあたって、前記熱交換器から落ちる結露水を受けるドレンパンに溜まった結露水に前記熱交換器から熱を伝え、前記ドレンパンに溜まった結露水が設定温度に達するまで前記凝縮を実施することを特徴とする空気調和機の防カビ方法。
- 請求項1~4のいずれか1項に記載の空気調和機の防カビ方法において、前記凝縮時に設定される圧縮機の過負荷条件は、暖房運転時に設定される前記圧縮機の過負荷条件に比べて緩和されることを特徴とする空気調和機の防カビ方法。
- 請求項1~5のいずれか1項に記載の空気調和機の防カビ方法において、前記熱交換器の加熱時に送風ファンの回転を停止することを特徴とする空気調和機の防カビ方法。
- 熱交換器と、
前記熱交換器の下方に配置されるドレンパンと、
熱伝導材から成形されて前記熱交換器から前記ドレンパンに溜まった結露水に伝熱する伝熱部材と
を備えることを特徴とする空気調和機。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN201880014498.3A CN110382968A (zh) | 2017-02-28 | 2018-02-22 | 空气调节器的防霉方法及使用其的空气调节器 |
AU2018226754A AU2018226754B2 (en) | 2017-02-28 | 2018-02-22 | Mold prevention method for air conditioner, and air conditioner using mold prevention method |
EP18760446.7A EP3591305B1 (en) | 2017-02-28 | 2018-02-22 | Mold prevention method for air conditioner |
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JP2017036408A JP6824779B2 (ja) | 2017-02-28 | 2017-02-28 | 空気調和機の防カビ方法およびそれを用いた空気調和機 |
JP2017-036408 | 2017-02-28 |
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CN111594976A (zh) * | 2020-03-03 | 2020-08-28 | 青岛海尔空调器有限总公司 | 用于空调器清洁的方法及空调器 |
CN111928436A (zh) * | 2020-08-05 | 2020-11-13 | Tcl空调器(中山)有限公司 | 室内环境杀菌方法、空调器及计算机可读存储介质 |
EP4083531A4 (en) * | 2019-12-23 | 2024-01-17 | Fujitsu General Ltd | AIR CONDITIONER |
EP4083530A4 (en) * | 2019-12-23 | 2024-01-24 | Fujitsu General Ltd | AIR CONDITIONER |
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JP7255193B2 (ja) * | 2019-01-18 | 2023-04-11 | 株式会社富士通ゼネラル | 空気調和機 |
JP2020115063A (ja) * | 2019-01-18 | 2020-07-30 | 株式会社富士通ゼネラル | 空気調和機 |
CN110736198B (zh) * | 2019-10-18 | 2021-09-21 | 青岛海尔空调器有限总公司 | 用于空调自清洁的方法、装置和空调 |
CN110736197B (zh) * | 2019-10-18 | 2021-09-21 | 青岛海尔空调器有限总公司 | 用于空调自清洁的方法、装置和空调 |
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EP3591305A1 (en) | 2020-01-08 |
EP3591305B1 (en) | 2024-02-14 |
AU2018226754B2 (en) | 2020-10-29 |
CN110382968A (zh) | 2019-10-25 |
JP2018141597A (ja) | 2018-09-13 |
EP3591305A4 (en) | 2020-12-23 |
JP6824779B2 (ja) | 2021-02-03 |
AU2018226754A1 (en) | 2019-08-22 |
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