JP3624836B2 - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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Publication number
JP3624836B2
JP3624836B2 JP2001006296A JP2001006296A JP3624836B2 JP 3624836 B2 JP3624836 B2 JP 3624836B2 JP 2001006296 A JP2001006296 A JP 2001006296A JP 2001006296 A JP2001006296 A JP 2001006296A JP 3624836 B2 JP3624836 B2 JP 3624836B2
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Japan
Prior art keywords
air
heat exchanger
outlet
indoor unit
blown
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Expired - Fee Related
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JP2001006296A
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Japanese (ja)
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JP2002213808A (en
Inventor
知宏 薮
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Daikin Industries Ltd
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Daikin Industries Ltd
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Priority to JP2001006296A priority Critical patent/JP3624836B2/en
Application filed by Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to EP01273084A priority patent/EP1361398B1/en
Priority to AU2002219519A priority patent/AU2002219519B9/en
Priority to PCT/JP2001/011318 priority patent/WO2002055937A1/en
Priority to AT01273084T priority patent/ATE425420T1/en
Priority to DE60137968T priority patent/DE60137968D1/en
Priority to ES01273084T priority patent/ES2322022T3/en
Publication of JP2002213808A publication Critical patent/JP2002213808A/en
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Publication of JP3624836B2 publication Critical patent/JP3624836B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F2221/54—Heating and cooling, simultaneously or alternatively
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02331—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0233—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements
    • F25B2313/02334—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in parallel arrangements during heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
    • F25B2313/02341—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
    • F25B2313/0234—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements
    • F25B2313/02344—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units in series arrangements during heating

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (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)
  • Air Humidification (AREA)

Abstract

An indoor unit for a low-place installation type air conditioner comprising a casing (1) having an air inlet (2) in the front surface (1a), an upper surface air outlet (3) in the upper surface (1b) and side surface air outlets (4) in the side surfaces (1c) and installed on an indoor floor (51) or in the vicinity thereof, and a fan (5) and a heat exchanger (6) that are disposed in the casing (1) such that the heat exchanger (6) lies on the suction side of the fan (5), wherein a second heat exchanger (7,8) is installed in the casing (1) to regulate the temperature of either the upper outlet air (Ab) or the side outlet air (Ac) such that the temperature of the upper outlet air (Ab) from the upper surface air outlet (3) is lower than the temperature of the side outlet air (Ac) from the side surface air outlet (4). The first heat exchanger (6) is positioned on the upstream side in the direction of airflow, while the second heat exchanger (7, 8) is positioned on the downstream side in the direction of airflow, and the second heat exchanger (7, 8) faces either the upper surface air outlet (3) or the side surface air outlet (4). <IMAGE>

Description

【０００２】
【発明の属する技術分野】
【０００３】
本願発明は、室内の床面あるいはその近傍の低所に室内壁面に沿って設置され、上方及び側方へ空調風を吹き出すようにした空気調和機の室内機に関するものである。
【従来の技術】
【０００４】
一般に、空気調和機は、室内に冷風あるいは温風を吹き出し、これを室内において対流により循環させることで室内の冷暖房を行うようになっている。
【０００５】
ところが、このような強制対流方式によって室内の冷暖房を行う場合、問題となるのが、ペリメータゾーンから居住域への熱輻射の影響である。即ち、例えば夏季とか冬季には室外温度と室内温度との差が大きく、室内の壁面あるいは窓部の近傍のペリメータゾーンにおいては、壁面とか窓を介して熱輻射により室外側から室内側に熱が侵入し、空調時の冷房負荷とか暖房負荷が増加し、冷暖房の快適性が損なわれることになる。
【０００６】
このようなペリメータゾーンからの熱影響による冷暖房の快適性の悪化を抑制する技術として、空気調和機の室内機を室内の壁際とか窓際の床面上あるいはその近傍の低所に設置し、空調風を上方及び側方へ吹き出してペリメータゾーンの近傍にエアバリアを形成して該ペリメータゾーンからの熱影響を排除しつつ室内の冷暖房を行う方法が提案されている。
【０００７】
図２６には係る用途に使用される室内機Ｚ０を、また図２７にはその空気調和機の冷媒回路を示している。上記室内機Ｚ０は、矩形形態をもち且つその前面１ａに吸込口２を、上面１ｂに上面吹出口３を、両側面１ｃ，１ｃにそれぞれ側面吹出口４を設けたケーシング１内に、遠心式ファン５，５をその吸込側を上記吸込口２側に向けて配置するとともに、該ファン５の吸込側と上記吸込口２との間に第１熱交換器６を配置して構成され、上記ファン５，５によって上記吸込口２から吸い込まれる室内空気を上記第１熱交換器６において熱交換して冷風あるいは温風とし、これを上記上面吹出口３から上方へ向けて、また上記各側面吹出口４，４から側方へ向けてそれぞれ吹き出すようになっている。また、この室内機Ｚ０は、図２７に示すように、圧縮機９と四路切換弁１０と室外側熱交換器１１と主膨張弁１２とを備えた室外機Ｙと冷媒配管により接続されることで空気調和機を構成している。
【発明が解決しようとする課題】
【０００８】
ところが、このような従来の低所設置型の室内機Ｚ０においては、上記ファン５の吸込側に第１熱交換器６を配置し、該ファン５の吹出側には上記上面吹出口３と側面吹出口４とが直接臨む構造とされているので、暖房運転時には図２８に示すように、また冷房運転時には図２９に示すように、これら何れの運転時においても、吸込空気Ａａは上記第１熱交換器６において熱交換した後、上記上面吹出口３から上方吹出空気Ａｂとして、また上記側面吹出口４から側方吹出空気Ａｃとしてそれぞれ吹き出され、上方吹出温度と側方吹出温度は同じ温度とされる。
【０００９】
従って、上記上面吹出口３からの上方吹出空気Ａｂと上記側面吹出口４からの側方吹出空気Ａｃとによって窓際あるいは壁際にエアバリアを形成して窓部等からの輻射熱の侵入を抑制するという機能は達成されるものの、暖房運転時においては室内床面側の暖気の浮上によって床面側の温度が低下し、また冷房運転時には床面側に冷気が溜まり易く、何れの運転においても理想的な温熱環境である「頭寒足熱」を実現することが困難であり、空調の快適性が損なわれるという問題があった。
【００１０】
そこで本願発明は、低所設置型の空気調和機の室内機において、ドラフト感のない「頭寒足熱」という理想的な温熱環境を実現して空調の快適性を高めることを目的としてなされたものである。
【課題を解決するための手段】
【００１１】
本願発明ではかかる課題を解決するための具体的手段として次のような構成を採用している。
【００１２】
本願の第１の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器７，８とを配置して構成される空気調和機の室内機において、上記第１熱交換器６を送風方向上流側に、上記第２熱交換器７，８を送風方向下流側にそれぞれ位置させるとともに、該第２熱交換器７，８を上記上面吹出口３と上記側面吹出口４の何れか一方に臨ませ且つ暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしたことを特徴としている。
【００１３】
本願の第２の発明では、上記第１の発明にかかる空気調和機の室内機において、上記第２熱交換器７，８を上記第１熱交換器６と一体に、又は別体に形成したことを特徴としている。
【００１４】
本願の第３の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器７とを配置して構成される空気調和機の室内機において、上記第２熱交換器７を上記上面吹出口３に臨ませて配置するとともに、該第２熱交換器７を冷房運転時には低圧側で蒸発器として機能させ、暖房運転時には冷房運転時よりも高圧寄りで蒸発器として機能させるように構成したことを特徴としている。
【００１５】
本願の第４の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器８とを配置して構成される空気調和機の室内機において、上記第２熱交換器８を上記側面吹出口４に臨ませて配置するとともに、該第２熱交換器８を暖房運転時には高圧側で凝縮器として、冷房運転時に暖房運転時よりも低圧寄りで蒸発器として機能させるように構成したことを特徴としている。
【００１６】
本願の第５の発明では、上記第１、第２、第３又は第４の発明にかかる空気調和機の室内機において、上記第１熱交換器６と上記第２熱交換器７，８の何れか一方又は双方を、複数本の偏平伝熱管３１とフィン３２とを交互に積層するとともに該各偏平伝熱管３１の両端をそれぞれヘッダー３３，３４によって接続してなる積層型熱交換器３０で構成したことを特徴としている。
【００１７】
本願の第６の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と熱交換器６とを配置して構成される空気調和機の室内機において、上記側面吹出口４にヒーター１５を設け、暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしたことを特徴としている。
【００１８】
本願の第７の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４）をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と熱交換器６とを配置して構成される空気調和機の室内機において、室内空気を上記熱交換器６を迂回させて上記上面１ｂと上記側面１ｃの何れか一方側に、又はこれら双方側に吹き出すサーキュレーション機構Ｘを設け、暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしたことを特徴としている。
【発明の効果】
【００１９】
本願発明ではかかる構成とすることにより次のような効果が得られる。
【００２０】
（イ） 本願の第１の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器７，８とを配置して構成される空気調和機の室内機において、上記第１熱交換器６を送風方向上流側に、上記第２熱交換器７，８を送風方向下流側にそれぞれ位置させるとともに、該第２熱交換器７，８を上記上面吹出口３と上記側面吹出口４の何れか一方に臨ませ且つ暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしている。
【００２１】
従って、上記第２熱交換器７を上記上面吹出口３側に備えた場合には、その冷房運転時においては、上記上面吹出口３から上方へ吹き出される上方吹出空気Ａｂは上記第１熱交換器６と上記第２熱交換器７の双方を通過しこれら双方において冷却されるので、該第１熱交換器６のみしか通過しない上記側面吹出口４から側方へ吹き出される側方吹出空気Ａｃよりもその吹出温度が低くなり、室内上部にはより冷たい空気が、室内下部には比較的暖かい空気がそれぞれ吹き出されることで「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。即ち、冷房快適性重視の運転が実現される。
【００２２】
一方、上記第２熱交換器８を上記側面吹出口４に備えた場合には、その暖房運転時においては、上記側面吹出口４から側方へ吹き出される側方吹出空気Ａｃは上記第１熱交換器６と上記第２熱交換器８の双方を通過するため、該第１熱交換器６しか通過しない上記上面吹出口３から上方へ吹き出される上方吹出空気Ａｂよりもその吹出温度が高くなり、床面近くの暖気の浮上が室内上部の温度の低い空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られる。即ち、暖房快適性重視の運転が実現される。
【００２３】
（ロ） 本願の第２の発明では、上記第１の発明にかかる空気調和機の室内機において、上記第２熱交換器７，８を上記第１熱交換器６と一体に、又は別体に形成しているので、例えば、これら両者を一体に形成した場合には部品点数の低減あるいは組付工数の低減によって製造コストの低廉化を図り室内機をより安価に提供することができ、またこれらを別体に形成した場合にはケーシング１に対する上記第１熱交換器６と第２熱交換器７，８のレイアウトの自由度が向上し室内機の形態面でのニーズの多様化に容易に対応できる。
【００２４】
（ハ） 本願の第３の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器７とを配置して構成される空気調和機の室内機において、上記第２熱交換器７を上記上面吹出口３に臨ませて配置するとともに、該第２熱交換器７を冷房運転時には低圧側で蒸発器として機能させ、暖房運転時には冷房運転時よりも高圧寄りで蒸発器として機能させるように構成している。
【００２５】
従って、暖房運転時には上記上面吹出口３からは上記第１熱交換器６において加熱された後、該第１熱交換器６よりも低圧寄りで蒸発器として機能する上記第２熱交換器７において冷却された比較的低温の空気が吹き出されるのに対して、上記側面吹出口４からは上記第１熱交換器６において加熱されただけの比較的高温の空気が吹き出されるので、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られる。
【００２６】
一方、冷房運転時には、上記上面吹出口３からは上記第１熱交換器６と第２熱交換器７の双方を通過しこれら両者において冷却された低温の空気が吹き出されるのに対して、上記側面吹出口４からは上記第１熱交換器６のみを通過した比較的高温の空気が吹き出されることで、「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。
【００２７】
（ニ） 本願の第４の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と第１熱交換器６と第２熱交換器８とを配置して構成される空気調和機の室内機において、上記第２熱交換器８を上記側面吹出口４に臨ませて配置するとともに、該第２熱交換器８を暖房運転時には高圧側で凝縮器として、冷房運転時に暖房運転時よりも低圧寄りで蒸発器として機能させるように構成している。
【００２８】
従って、暖房運転時には上記側面吹出口４からは上記第１熱交換器６において加熱された後、さらに上記第２熱交換器８において加熱された温度の高い空気が吹き出されるのに対して、上記上面吹出口３からは上記第１熱交換器６において加熱されただけの比較的温度の低い空気が吹き出されるので、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られる。
【００２９】
一方、冷房運転時には、上記側面吹出口４からは上記第１熱交換器６において冷却された後、該第１熱交換器６よりも高圧寄りで蒸発器として機能する第２熱交換器８を通過することで加熱された比較的温度の高い空気が吹き出されるのに対して、上記上面吹出口３からは上記第１熱交換器６のみを通過した低温の空気が吹き出されることで、「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。
【００３０】
（ホ） 本願の第５の発明にかかる空気調和機の室内機によれば、上記第１、第２、第３又は第４の発明にかかる空気調和機の室内機において、上記第１熱交換器６と上記第２熱交換器７，８の何れか一方又は双方を、複数本の偏平伝熱管３１とフィン３２とを交互に積層するとともに該各偏平伝熱管３１の両端をそれぞれヘッダー３３，３４によって接続してなる積層型熱交換器３０で構成しているので、該積層型熱交換器３０の特性から、例えば上記第１熱交換器６と上記第２熱交換器７，８と共にクロスフィン型熱交換器で構成する場合に比して、その薄形化を図ることができ、その結果、室内機の形態のコンパクト化と性能向上との両立が可能となる。
【００３１】
（ヘ） 本願の第６の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と熱交換器６とを配置して構成される空気調和機の室内機において、上記側面吹出口４にヒーター１５を設け、暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしたことを特徴としている。
【００３２】
従って、暖房運転時には、上記熱交換器６において加熱され上記上面吹出口３から上方へ吹き出される上方吹出空気Ａｂの温度は、上記熱交換器６と上記ヒーター１５の双方によって加熱され上記側面吹出口４から側方へ吹き出される側方吹出空気Ａｃの温度よりも低くなることから、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれて「頭寒足熱」が実現され、快適な暖房感が得られる。
【００３３】
一方、冷房運転時には、上記側面吹出口４からは上記熱交換器６において冷却された後、さらに上記ヒーター１５において加熱された比較的温度の高い空気が側方吹出空気Ａｃとして吹き出されるのに対して、上記上面吹出口３側からは上記熱交換器６において冷却されただけの比較的温度の低い空気が吹き出されることから、室内下部には比較的温度の低い空気が存在し、室内上部には比較的温度の高い空気が存在し、これによって理想的な温熱空間である「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。
【００３４】
（ト） 本願の第７の発明では、前面１ａに吸込口２を、上面１ｂに上面吹出口３を、側面１ｃに側面吹出口４をそれぞれ設け且つ室内床面５１側に設置されるケーシング１内に、ファン５と熱交換器６とを配置して構成される空気調和機の室内機において、室内空気を上記熱交換器６を迂回させて上記上面１ｂと上記側面１ｃの何れか一方側に、又はこれら双方側に吹き出すサーキュレーション機構Ｘを設け、暖房運転時又は冷房運転時において上記側面吹出口４より吹き出される側方吹出空気Ａｃの温度が上記上面吹出口３より吹き出される上方吹出空気Ａｂの温度より高温となるようにしたことを特徴としている。
【００３５】
従って、サーキュレーション機構Ｘによって室内空気を上記ケーシング１の上面１ｂ側に吹き出す構成とした場合、暖房運転時においては、上記熱交換器６で加熱された空気と上記サーキュレーション機構Ｘからの室内空気とが混合して上記上面吹出口３から上方へ吹き出されることで上方吹出空気Ａｂの温度は比較的低く抑えられる一方、上記側面吹出口４からは上記熱交換器６で加熱された比較的高温の側方吹出空気Ａｃが吹き出されることで、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られる。即ち、暖房快適性重視の運転が実現される。
【００３６】
一方、サーキュレーション機構Ｘによって室内空気を上記ケーシング１の側面１ｃ側に吹き出す構成とした場合、冷房運転時においては、上記上面吹出口３側からは上記熱交換器６で冷却された比較的低温の上方吹出空気Ａｂが上方へ向けて吹き出されるのに対して、上記側面吹出口４側からは上記熱交換器６で冷却された空気と上記サーキュレーション機構Ｘからの室内空気とが混合した比較的高温の側方吹出空気Ａｃが吹き出されることで、足元への冷気溜まりが可及的に防止され、冷房快適性重視の運転が実現される。
【発明の実施の形態】
【００３７】
以下、本願発明を幾つかの好適な実施形態に基づいて具体的に説明する。
【００３８】
先ず、図１には、本願発明がその対象とするセパレート型の空気調和機の室内機Ｚを示している。この室内機Ｚは、同図に示すように、室内の中でも特に空調負荷の高いペリメータゾーン、例えば窓部５３の近傍領域に設置して空調負荷の軽減を図るに好適な床置型室内機であって、窓部５３の下側の室内床面５１上に室壁５２に沿って設置され、空調風を上方と側方とに同時に吹き出すことで、窓部５３等からの輻射熱の侵入を抑制しつつ室内の空調を行うものである。
【００３９】
上記室内機Ｚにおいては、壁面設置に有利な矩形のケーシング１を備えるとともに、該ケーシング１の前面１ａには吸込口２を、上面１ｂには上面吹出口３を、左右両側面１ｃ，１ｃには側面吹出口４，４を、それぞれ設けている。
【００４０】
このケーシング１内には、左右一対の遠心式のファン５，５が、その吸込側を上記吸込口２に対向させた状態で横方向に所定間隔をもって併置されるとともに、該ファン５，５の吸込側と上記吸込口２の間には第１熱交換器６が設けられる。このように、上記ファン５の吸込側に上記第１熱交換器６を配置した構成が上記室内機Ｚの基本構成であって、本願発明はかかる基本構成に加えて、上記ファン５の吹出側に臨む上記上面吹出口３と側面吹出口４のうち、該上面吹出口３には第２熱交換器７を、また該側面吹出口４側には第２熱交換器８を、例えば、要求される室内の空調特性等の条件に応じて選択的に設けることで、冷房時及び暖房時の快適性を高めることに特徴を有するものである。
【００４１】
そして、上記上面吹出口３に上記第２熱交換器７を設けた場合には、上記吸込口２から吸い込まれる吸込空気Ａａは、上記第１熱交換器６を通過した後、その一部はさらに上記第２熱交換器７を通って上方吹出空気Ａｂとして上方へ吹き出され、他の一部はそのまま上記側面吹出口４から側方吹出空気Ａｃとして側方へ吹き出される。
【００４２】
また、上記側面吹出口４に上記第２熱交換器８を設けた場合には、上記吸込口２から吸い込まれる吸込空気Ａａは、上記第１熱交換器６を通過した後、その一部はさらに上記第２熱交換器８を通って側方吹出空気Ａｃとして側方へ吹き出され、他の一部はそのまま上記上面吹出口３から上方吹出空気Ａｂとして上方へ吹き出される。
【００４３】
以下、本願発明にかかる空気調和機の室内機を好適な実施形態に基づいて具体的に説明する。
【００４４】
（１） 第１の実施形態（図２〜図５参照）
第１の実施形態にかかる室内機Ｚ１は、図２に示すように、上記ケーシング１の上記吸込口２に対応して上記第１熱交換器６を配置するとともに、上記上面吹出口３と左右の側面吹出口４，４のうち、該各側面吹出口４，４にそれぞれ第２熱交換器８を設けて構成される。従って、上記ファン５，５の運転に伴い上記吸込口２から吸い込まれる吸込空気Ａａは、上記第１熱交換器６を通過した後、その一部はそのまま上記上面吹出口３から上方吹出空気Ａｂとして上方へ吹き出され、他の一部はさらに上記第２熱交換器８を通過した後、上記側面吹出口４から側方吹出空気Ａｃとして側方へ吹き出される。
【００４５】
上記室内機Ｚ１を含む空気調和機全体の冷媒回路構成を図３に示している。この空気調和機は、上記室内機Ｚ１と室外機Ｙとを冷媒配管によって接続して構成されるものであり、該室外機Ｙ側には圧縮機９と四路切換弁１０と室外側熱交換器１１と膨張弁１２が備えられ、また上記室内機Ｚ１には上記第１熱交換器６と第２熱交換器８とが備えられている。そして、この実施形態のものにおいては、上記第１熱交換器６と第２熱交換器８の配置構成を、冷房運転サイクルにおいて該第２熱交換器８が上記第１熱交換器６の冷媒循環方向上流側に位置するように設定している。
【００４６】
続いて、この実施形態にかかる室内機Ｚ１の暖房運転時と冷房運転時とにおける作動等について説明する。
【００４７】
この実施形態の室内機Ｚ１では、上記第２熱交換器８を上記側面吹出口４側に配置し、上記上面吹出口３側には熱交換器を設けていないので、暖房運転時及び冷房運転時共に、上記側面吹出口４側から吹き出される側方吹出空気Ａｃは上記第１熱交換器６と第２熱交換器８とにおいてそれぞれ熱交換作用を受けるのに対して、上記上面吹出口３から吹き出される上方吹出空気Ａｂは上記第１熱交換器６での熱交換作用しか受けず、この結果、上記側方吹出空気Ａｃと上方吹出空気Ａｂとの間には温度差を生じる。この側方吹出空気Ａｃと上方吹出空気Ａｂの温度差を有効に利用して、特に暖房運転時における快適性を高めるのがこの室内機Ｚ１である。
【００４８】
即ち、この室内機Ｚ１の暖房運転時においては、図４に示すように、吸込空気Ａａのうち、上記上面吹出口３から吹き出される上方吹出空気Ａｂは上記第１熱交換器６においてのみ加熱作用を受けるのに対して、上記側面吹出口４から吹き出される側方吹出空気Ａｃは上記第１熱交換器６と上記第２熱交換器８の双方において加熱作用を受けるので、上方吹出空気Ａｂは比較的低温とされ、側方吹出空気Ａｃは比較的高温とされる。この結果、室内下部の床面５１近くには比較的温度の高い空気が、室内上部には比較的温度の低い空気が存在することとなり、床面近くの温度の高い空気の浮上が室内上部の温度の低い空気によって押さえ込まれ、理想的な温熱環境である「頭寒足熱」が実現され、快適な暖房感が得られる。即ち、暖房快適性重視の運転が実現されるものである。
【００４９】
一方、上記室内機Ｚ１の冷房運転時には、図５に示すように、上記側面吹出口４からは上記第１熱交換器６と第２熱交換器８とにおいてそれぞれ冷却作用を受けた低温の空気が側方吹出空気Ａｃとして吹き出され、また上記上面吹出口３からは上記第１熱交換器６のみで冷却された比較的温度の高い空気が上方吹出空気Ａｂとして吹き出される。このため、冷房運転時にも快適性を求めるならば、例えば上記側面吹出口４を閉塞するとか、該側面吹出口４を壁面に近接対向させて、該側面吹出口４からの側方吹出空気Ａｃの吹き出しを抑制するようにすれば良い。
【００５０】
また、上記第１熱交換器６及び上記第２熱交換器７，８としては、「クロスフィン型熱交換器」が採用されるのが一般的であるが、特に室内機Ｚ１のコンパクト化を図るという点においては、該第１熱交換器６と第２熱交換器７，８の何れか一方、又は該第１熱交換器６と第２熱交換器７，８の双方を、図６に示すように、複数本の偏平伝熱管３１，３１，・・と複数個のコルゲートフィン３２，３２，・・とを交互に積層するとともに、該各偏平伝熱管３１，３１，・・の両端をそれぞれヘッダー３３，３４によって接続してなる積層型熱交換器３０で構成すれば
好適である。
【００５１】
さらに、この実施形態のように上記ケーシング１内に一対のファン５，５を横方向に所定間隔をもって配置したものにおいては、これら一対のファン５，５を同方向に回転させるのが一般的である。しかし、このように一対のファン５，５を同方向に回転させた場合には、上記側面吹出口４から吹き出される側方吹出空気Ａｃの斜め下方への速度成分が増加し、特に冷房運転時においてダウンドラフト感が増大し、快適性という点において好ましくない。
【００５２】
このようなダウンドラフトを効果的に抑制するには、上記一対のファン５，５の回転方向をその吸込側から見て共に外側向きとなるように設定することが有効である。また、これとは逆に、上記一対のファン５，５の回転方向をその吸込側から見て共に内側向きとなるように設定した場合には、ダウンドラフトの抑制効果は減じるものの、該一対のファン５，５間の間隔を狭めることができることから、室内機のコンパクト化という点において有利である。
【００５３】
また、上記一対のファン５，５の回転数をそれぞれ独立して制御するように構成することもでき、かかる構成とした場合には、例えば人の居る領域に近い側のファン５はその回転数を高目に設定し、人のいない領域に近い側のファン５はその回転数を低目に設定する等、空調要求度に対応したゾーニングが可能となり、快適性のより一層の向上が期待できる。
【００５４】
第２の実施形態（図７〜図９を参照）
図７には、本願発明の第２の実施形態にかかる室内機Ｚ２を備えた空気調和機全体の冷媒回路を示している。この実施形態の室内機Ｚ２は、上記第１の実施形態の室内機Ｚ１においては冷房サイクルにおいて上記第１熱交換器６が上記第２熱交換器８の下流側に位置するように冷媒経路を設定していたのに対して、冷房サイクルにおいて上記第１熱交換器６が上記第２熱交換器８の上流側に位置するように冷媒経路を設定したものである。
【００５５】
従って、図８及び図９に示すように、暖房運転時及び冷房運転時においても上記第１の実施形態の室内機Ｚ１の場合と同様に、上記側面吹出口４からの側方吹出空気Ａｃは上記第１熱交換器６と第２熱交換器８とにおいて加熱又は冷却され、上記上面吹出口３からの上方吹出空気Ａｂは上記第１熱交換器６のみにおいて加熱又は冷却され、この側方吹出空気Ａｃと上方吹出空気Ａｂとの間に温度差が生じる。この結果、上記第１の実施形態の室内機Ｚ１の場合と同様に、特に暖房運転時における快適性を重視した運転が実現されるものである。
【００５６】
第３の実施形態（図１０〜図１３を参照）
第３の実施形態にかかる室内機Ｚ３は、図１０に示すように、上記ケーシング１の上記吸込口２に対応して上記第１熱交換器６を配置するとともに、上記上面吹出口３と左右の側面吹出口４，４のうち、該上面吹出口３に第２熱交換器７を設けて構成される。従って、上記ファン５，５の運転に伴い上記吸込口２から吸い込まれる吸込空気Ａａは、上記第１熱交換器６を通過した後、その一部はそのまま上記側面吹出口４から側方吹出空気Ａｃとして側方へ吹き出され、他の一部はさらに上記第２熱交換器７を通過した後、上記上面吹出口３から上方吹出空気Ａｂとして上方へ吹き出される。
【００５７】
上記室内機Ｚ３を含む空気調和機全体の冷媒回路構成を図１１に示している。この空気調和機は、上記室内機Ｚ３と室外機Ｙとを冷媒配管によって接続して構成されるものであり、該室外機Ｙ側には圧縮機９と四路切換弁１０と室外側熱交換器１１と膨張弁１２が備えられ、また上記室内機Ｚ３には上記第１熱交換器６と第２熱交換器７とが備えられている。そして、この実施形態のものにおいては、上記第１熱交換器６と第２熱交換器７の配置構成を、冷房運転サイクルにおいて該第２熱交換器７が上記第１熱交換器６の冷媒循環方向下流側に位置するように設定している。
【００５８】
続いて、この実施形態にかかる室内機Ｚ３の暖房運転時と冷房運転時とにおける作動等について説明する。
【００５９】
この実施形態の室内機Ｚ３では、上記第２熱交換器７を上記上面吹出口３側に配置し、上記側面吹出口４側には熱交換器を設けていないので、暖房運転時及び冷房運転時共に、上記上面吹出口３側から吹き出される上方吹出空気Ａｂは上記第１熱交換器６と第２熱交換器７とにおいてそれぞれ熱交換作用を受けるのに対して、上記側面吹出口４から吹き出される側方吹出空気Ａｃは上記第１熱交換器６での熱交換作用しか受けず、この結果、上記側方吹出空気Ａｃと上方吹出空気Ａｂとの間には温度差を生じる。この側方吹出空気Ａｃと上方吹出空気Ａｂの温度差を有効に利用して、特に冷房運転時における快適性を高めるのがこの室内機Ｚ３である。
【００６０】
即ち、この室内機Ｚ３の冷房運転時においては、図１３に示すように、吸込空気Ａａのうち、上記側面吹出口４から吹き出される側方吹出空気Ａｃは上記第１熱交換器６においてのみ冷却作用を受けるのに対して、上記上面吹出口３から吹き出される上方吹出空気Ａｂは上記第１熱交換器６と上記第２熱交換器７の双方において冷却作用を受けるので、上方吹出空気Ａｂは比較的低温とされ、側方吹出空気Ａｃは比較的高温とされる。この結果、室内上部にはより冷たい空気が、室内下部には比較的暖かい空気がそれぞれ吹き出されることで「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。即ち、冷房快適性重視の運転が実現される。
【００６１】
尚、この室内機Ｚ３の暖房運転時には、図１２に示すように、上記上面吹出口３からは上記第１熱交換器６と第２熱交換器７とにおいてそれぞれ加熱作用を受けた高温の空気が上方吹出空気Ａｂとして吹き出され、また上記側面吹出口４からは上記第１熱交換器６のみで加熱された比較的温度の低い空気が側方吹出空気Ａｃとして吹き出される。このため、暖房運転時にも快適性を求めるならば、例えば上記上面吹出口３を閉塞して該上面吹出口３からの上方吹出空気Ａｂの吹き出しを抑制するようにすれば良い。
【００６２】
第４の実施形態（図１４〜図１６を参照）
図１４には、本願発明の第４の実施形態にかかる室内機Ｚ４を備えた空気調和機全体の冷媒回路を示している。この実施形態の室内機Ｚ４は、上記第３の実施形態の室内機Ｚ３においては冷房サイクルにおいて上記第１熱交換器６が上記第２熱交換器７の上流側に位置するように冷媒経路を設定していたのに対して、冷房サイクルにおいて上記第１熱交換器６が上記第２熱交換器７の冷媒循環方向下流側に位置するように冷媒経路を設定したものである。
【００６３】
従って、図１５及び図１６に示すように、暖房運転時及び冷房運転時においても上記第３の実施形態の室内機Ｚ３の場合と同様に、上記上面吹出口３からの上方吹出空気Ａｂは上記第１熱交換器６と第２熱交換器７とにおいて加熱又は冷却され、上記側面吹出口４からの側方吹出空気Ａｃは上記第１熱交換器６のみにおいて加熱又は冷却され、この側方吹出空気Ａｃと上方吹出空気Ａｂとの間に温度差が生じ、上記第３の実施形態の室内機Ｚ３の場合と同様に、特に冷房運転時における快適性を重視した運転が実現されるものである。
【００６４】
第５の実施形態（図１７〜図１９を参照）
第５の実施形態にかかる室内機Ｚ５は、上記第１の実施形態にかかる室内機Ｚ１と同様に、上記ケーシング１の上記吸込口２に対応して上記第１熱交換器６を配置するとともに、上記上面吹出口３と左右の側面吹出口４，４のうち、該側面吹出口４，４に第２熱交換器８を設けて構成されるもの（図２を参照）を対象としており、従って、上記ファン５，５の運転に伴い上記吸込口２から吸い込まれる吸込空気Ａａは、上記第１熱交換器６を通過した後、その一部はそのまま上記上面吹出口３から上方吹出空気Ａｂとして上方へ吹き出され、他の一部はさらに上記第２熱交換器８を通過した後、上記側面吹出口４から側方吹出空気Ａｃとして側方へ吹き出される。
【００６５】
上記室内機Ｚ５を含む空気調和機全体の冷媒回路構成を図１７に示している。この空気調和機は、上記室内機Ｚ５と室外機Ｙとを冷媒配管によって接続して構成されるものであり、該室外機Ｙ側には圧縮機９と四路切換弁１０と室外側熱交換器１１と膨張弁１２が備えられ、また上記室内機Ｚ５には上記第１熱交換器６と第２熱交換器８とが備えられている。
【００６６】
そして、この実施形態の室内機Ｚ５においては、上記第１熱交換器６と第２熱交換器８とを補助膨張弁１３を介して接続するとともに、これら両熱交換器６，８の配置構成を、冷房運転サイクルにおいて該第２熱交換器８が上記第１熱交換器６の冷媒循環方向上流側に位置するように設定している。
【００６７】
また、この補助膨張弁１３と上記室外機Ｙ側の上記主膨張弁１２との間においては、暖房運転時には上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「全開」とし、また、冷房運転時においては上記主膨張弁１２を「やや絞り」、上記補助膨張弁１３を「絞り」とするように、これら両者の作動関係を相対的に設定している。
【００６８】
続いて、この実施形態にかかる室内機Ｚ５の暖房運転時と冷房運転時とにおける作動等について説明する。
【００６９】
暖房運転時には、上述のように、上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「全開」としているので、図１８に示すように、上記第１熱交換器６と第２熱交換器８とが共に高圧側において凝縮器として機能し、上記上面吹出口３からは上記第１熱交換器６でのみ加熱された比較的温度の低い空気が上方吹出空気Ａｂとして上方へ向けて吹き出される一方、上記側面吹出口４からは上記第１熱交換器６と第２熱交換器８とにおいてそれぞれ加熱された比較的温度の高い空気が側方吹出空気Ａｃとして側方へ向けて吹き出される。従って、室内下部の比較的温度の高い空気の浮上が室内上部の比較的温度の低い空気によって押さえ込まれることで理想的な温熱空間である「頭寒足熱」が実現され、これにより快適な暖房感が得られる。
【００７０】
一方、冷房運転時には、上述のように、上記主膨張弁１２を「やや絞り」、上記補助膨張弁１３を「絞り」としているので、図１９に示すように、上記第１熱交換器６は低圧側で蒸発器として機能するのに対して、上記第２熱交換器８は高圧側と低圧側の中間圧で蒸発器として機能することになる。従って、上記上面吹出口３側からは上記第１熱交換器６において冷却されたのみの比較的温度の低い空気が上方吹出空気Ａｂとして上方へ吹き出されるのに対して、上記側面吹出口４側からは上記第１熱交換器６で冷却された後、これよりも高温の上記第２熱交換器８で冷却されることで、実質的に昇温した比較的温度の高い空気が側方吹出空気Ａｃとして側方へ向けて吹き出される。この結果、理想的な温熱空間である「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができる。
【００７１】
第６の実施形態（図２０〜図２２を参照）
第６の実施形態にかかる室内機Ｚ６は、上記第５の実施形態の室内機Ｚ５が上記側面吹出口４側に上記第２熱交換器８を備え且つ冷房運転サイクルにおいて該第２熱交換器８を上記補助膨張弁１３を介して上記第１熱交換器６の冷媒循環方向上流側に配置していたのに対して、上記上面吹出口３側に上記第２熱交換器７を備え且つこれを上記第１熱交換器６の冷媒循環方向上流側に配置したものである。
【００７２】
また、この実施形態の室内機Ｚ６では、上記補助膨張弁１３と上記室外機Ｙ側の上記主膨張弁１２との間において、暖房運転時には上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「やや絞り」とし、また、冷房運転時においては上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「全開」とするように、これら両者の作動関係を相対的に設定している。
【００７３】
続いて、この実施形態にかかる室内機Ｚ６の暖房運転時と冷房運転時とにおける作動等について説明する。
【００７４】
暖房運転時には、上述のように、上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「やや絞り」としているので、図２１に示すように、上記第１熱交換器６は高圧側で凝縮器として機能し、上記第２熱交換器７は高圧側と低圧側の中間圧で蒸発器として機能する。従って、上記上面吹出口３から上方へ向けて吹き出される上方吹出空気Ａｂは、上記第１熱交換器６において加熱された後、中間圧で蒸発器として機能する上記第２熱交換器７を通ることで冷却され、比較的温度の低い空気とされる。これに対して、上記側面吹出口４から側方へ向けて吹き出される側方吹出空気Ａｃは、上記第１熱交換器６において加熱されるのみであるため、比較的温度の高い空気とされ、室内上部には比較的温度の比較的空気が存在し、室内上部には比較的温度の低い空気が存在することとなる。この結果、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られることになる。
【００７５】
一方、冷房運転時には、上述のように、上記主膨張弁１２を「絞り」、上記補助膨張弁１３を「全開」としているので、図２２に示すように、上記第１熱交換器６と第２熱交換器７とが共に低圧側で蒸発器として機能する。従って、上記上面吹出口３から上方へ向けて吹き出される上方吹出空気Ａｂは、上記第１熱交換器６と上記第２熱交換器７の双方において冷却されるのに対して、上記側面吹出口４から側方へ向けて吹き出される側方吹出空気Ａｃは上記第１熱交換器６においてのみ冷却され、室内上部には比較的温度の低い空気が存在し、室内下部には比較的温度の高い空気が存在することになる。この結果、理想的な温熱空間である「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができることになる。
【００７６】
第７の実施形態（図２３を参照）
第７の実施形態にかかる室内機Ｚ７は、上記第１〜第６の実施形態にかかる室内機Ｚ１〜Ｚ６においては上記第２熱交換器７，８の付設によって冷暖房時の快適性の向上を図るようにしていたのに対して、上記ファン５の吹出側にヒーター１５を設けることで冷暖房時の快適性の向上を図るようにしたものである。
【００７７】
即ち、この室内機Ｚ７においては、図２３に示すように、上記ファン５の吸込側のみに熱交換器６を配置する一方、上記ファン５の吹出側には熱交換器は設けることなく、上記ヒーター１５を上記側面吹出口４に配置したものである。尚、このヒーター１５は、暖房運転時及び冷房運転時の双方において通電される。
【００７８】
かかる構成とすることで、暖房運転時には、上記側面吹出口４からは上記熱交換器６において加熱された後、さらに上記ヒーター１５において加熱された比較的温度の高い空気が側方吹出空気Ａｃとして吹き出されるのに対して、上記上面吹出口３側からは上記熱交換器６において加熱されただけの比較的温度の低い空気が吹き出される。この結果、室内上部には比較的温度の低い空気が存在し、室内下部には比較的温度の高い空気が存在し、室内下部の比較的高温の空気の浮上が室内上部の比較的低温の空気によって押さえ込まれることで「頭寒足熱」が実現され、快適な暖房感が得られることになる。
【００７９】
一方、冷房運転時には、上記側面吹出口４からは上記熱交換器６において冷却された後、さらに上記ヒーター１５において加熱された比較的温度の高い空気が側方吹出空気Ａｃとして吹き出されるのに対して、上記上面吹出口３側からは上記熱交換器６において冷却されただけの比較的温度の低い空気が吹き出される。この結果、室内下部には比較的温度の低い空気が存在し、室内上部には比較的温度の高い空気が存在し、理想的な温熱空間である「頭寒足熱」が実現され、足元の冷気溜まりを効果的に抑制して快適な冷房感を得ることができることになる。
【００８０】
第８の実施形態
図２４には、第８の実施形態にかかる室内機Ｚ８を示している。この室内機Ｚ８は、上記第１〜第７の実施形態の室内機Ｚ１〜Ｚ７のように上方吹出空気Ａｂと側方吹出空気Ａｃの吹出温度そのものを制御するのではなく、室内空気（即ち、暖房運転時には室内機から吹き出される空調風よりも温度が低く、冷房運転時には該空調風よりも温度の高い空気）を熱交換器６を迂回させて室内へ還流させることで上方吹出空気Ａｂと側方吹出空気Ａｃの温度調整を行い、もって空調の快適性を確保するようにしたものである。
【００８１】
即ち、この室内機Ｚ８においては、図２４に示すように、上記吸込口２の上部から上記ケーシング１の上面の上記上面吹出口３の近傍に跨がる湾曲状のバイパス路２０と該バイパス路２０内に配置されたファン２１とで構成されるサーキュレーション機構Ｘを備えている。
【００８２】
かかる構成とすることで、特に、暖房運転時には、上記熱交換器６によって加熱された後、上記上面吹出口３から上方へ向けて吹き出される上方吹出空気Ａｂと、上記サーキュレーション機構Ｘによって上記上面吹出口３の近傍から上方に吹き出される室内空気Ａｂ′とを混合させることで上方吹出温度を比較的低くする一方、上記側面吹出口４からの上記熱交換器６において加熱されたままの比較的温度の高い空気を側方吹出空気Ａｃとして吹き出し、室内上部の比較的温度の低い空気によって室内下部の比較的温度の高い空気の浮上を押さえ込み、これによって「頭寒足熱」を実現して快適な冷房感を得るものである。尚、冷房運転時には、上記サーキュレーション機構Ｘの作動を停止させる。
【００８３】
第９の実施形態
図２５には、第９の実施形態にかかる室内機Ｚ９を示している。この室内機Ｚ９は、上記第８の実施形態にかかる室内機Ｚ８が暖房運転時の快適性を重視したものであるのに対して、この実施形態の室内機Ｚ９は冷房運転時の快適性を重視したものである。
【００８４】
即ち、この室内機Ｚ９では、その左右両側部に、熱交換器６を迂回して上記吸込口２と上記各側面吹出口４の近傍とを連通するバイパス路２２と該バイパス路２２内に設けられたファン２３とから構成されるサーキュレーション機構Ｘをそれぞれ配置している。
【００８５】
従って、冷房運転時には、上記室内機Ｚ８の側方へは、上記熱交換器６において冷却された上記側面吹出口４からの側方吹出空気Ａｃと、上記サーキュレーション機構Ｘによって上記側面吹出口４の近傍に吹き出される室内空気Ａｃ′とが吹き出し後に混合した比較的温度の高い空気が吹き出される。これに対して、上記室内機Ｚ８の上方へは、上記熱交換器６で冷却された温度の低い空気がそのまま上方吹出空気Ａｂとして上記上面吹出口３側から吹き出される。この結果、室内上部には比較的温度の低い空気が存在し、室内下部には比較的温度の高い空気が存在することとなり、理想的な温熱空間である「頭寒足熱」が実現され、足元の冷気溜まりのない快適な冷房感を得ることができるものである。
【図面の簡単な説明】
【００８６】
【図１】本願発明に係る空気調和機の室内機の設置状態を示す斜視図である。
【図２】本願発明の第１の実施形態にかかる空気調和機における室内機の熱交換器の配置構造を示す断面図である。
【図３】図２に示した空気調和機の冷媒回路図である。
【図４】図２に示した空気調和機の暖房運転時における動作図である。
【図５】図２に示した空気調和機の冷房運転時における動作図である。
【図６】積層型熱交換器の構造を示す正面図である。
【図７】本願発明の第２の実施形態にかかる空気調和機における冷媒回路図である。
【図８】図７に示した空気調和機の暖房運転時における動作図である。
【図９】図７に示した空気調和機の冷房運転時における動作図である。
【図１０】本願発明の第３の実施形態にかかる空気調和機における室内機の熱交換器の配置構造を示す断面図である。
【図１１】図１０に示した空気調和機の冷媒回路図である。
【図１２】図１０に示した空気調和機の暖房運転時における動作図である。
【図１３】図１０に示した空気調和機の冷房運転時における動作図である。
【図１４】本願発明の第４の実施形態にかかる空気調和機の冷媒回路図である。
【図１５】図１４に示した空気調和機の暖房運転時における動作図である。
【図１６】図１４に示した空気調和機の冷房運転時における動作図である。
【図１７】本願発明の第５の実施形態にかかる空気調和機の冷媒回路図である。
【図１８】図１７に示した空気調和機の暖房運転時における動作図である。
【図１９】図１７に示した空気調和機の冷房運転時における動作図である。
【図２０】本願発明の第６の実施形態にかかる空気調和機の冷媒回路図である。
【図２１】図２０に示した空気調和機の暖房運転時における動作図である。
【図２２】図２０に示した空気調和機の冷房運転時における動作図である。
【図２３】本願発明の第７の実施形態にかかる空気調和機の冷媒回路図である。
【図２４】本願発明の第８の実施形態にかかる空気調和機における室内機の断面図である。
【図２５】本願発明の第９の実施形態にかかる空気調和機における室内機の断面図である。
【図２６】従来の空気調和機における室内機の熱交換器の配置構造を示す断面図である。
【図２７】従来の空気調和機の冷媒回路図である。
【図２８】従来の空気調和機の暖房運転時における動作図である。
【図２９】従来の空気調和機の冷房運転時における動作図である。
【符号の説明】
【００８７】
１はケーシング、２は吸込口、３は上面吹出口、４は側面吹出口、５はファン、６は第１熱交換器、７は第２熱交換器、８は第２熱交換器、９は圧縮機、１０は四路切換弁、１１は室外側熱交換器、１２及び１３は膨張弁、１４は開閉弁、１５はヒーター、２０はバイパス路、２１はファン、２２はバイパス路、２３はファン、３０は積層型熱交換器、３１は偏平伝熱管、３２はコルゲートフィン、３３及び３４はヘッダー、５１は室内床面、５２は室壁、５３は窓部、Ａａは吸込空気、Ａｂは上方吹出空気、Ａｃは側方吹出空気、Ｘはサーキュレーション機構、Ｙは室外機、Ｚ及びＺ０〜Ｚ９は室内機である。[0002]
BACKGROUND OF THE INVENTION
[0003]
The present invention relates to an indoor unit of an air conditioner that is installed along an indoor wall surface on a floor surface in the vicinity of the room or along a wall surface of the room and blows conditioned air upward and laterally.
[Prior art]
[0004]
In general, an air conditioner blows cold air or hot air into a room and circulates the air by convection in the room to cool and heat the room.
[0005]
However, when indoor air conditioning is performed by such a forced convection method, the problem is the influence of heat radiation from the perimeter zone to the living area. That is, for example, in summer or winter, the difference between the outdoor temperature and the indoor temperature is large, and in the perimeter zone near the indoor wall surface or window, heat is transmitted from the outdoor side to the indoor side by heat radiation through the wall surface or window. Intrusion will increase the cooling load or heating load during air conditioning, and the comfort of cooling and heating will be impaired.
[0006]
As a technology to suppress the deterioration of comfort of cooling and heating due to the heat effect from the perimeter zone, the indoor unit of the air conditioner is installed on the wall surface of the room or on the floor near the window, or in the vicinity of the floor, and the air conditioning A method has been proposed in which an air barrier is formed in the vicinity of the perimeter zone to cool and heat the room while eliminating the influence of heat from the perimeter zone.
[0007]
FIG. 26 shows an indoor unit Z0 used for such an application, and FIG. 27 shows a refrigerant circuit of the air conditioner. The indoor unit Z0 has a rectangular shape, and is centrifugally disposed in a casing 1 provided with a suction port 2 on the front surface 1a, an upper surface air outlet 3 on the upper surface 1b, and side air outlets 4 on both side surfaces 1c and 1c. The fans 5 and 5 are arranged with the suction side facing the suction port 2, and the first heat exchanger 6 is arranged between the suction side of the fan 5 and the suction port 2. The indoor air sucked from the suction port 2 by the fans 5 and 5 is heat-exchanged in the first heat exchanger 6 to cool air or warm air, which is directed upward from the upper surface outlet 3 and each side surface. The air is blown out from the air outlets 4 and 4 to the sides. Further, as shown in FIG. 27, the indoor unit Z0 is connected to an outdoor unit Y including a compressor 9, a four-way switching valve 10, an outdoor heat exchanger 11, and a main expansion valve 12 by a refrigerant pipe. This constitutes an air conditioner.
[Problems to be solved by the invention]
[0008]
However, in such a conventional low installed indoor unit Z0, the first heat exchanger 6 is disposed on the suction side of the fan 5, and the upper surface outlet 3 and the side surface are disposed on the outlet side of the fan 5. Since the structure directly faces the air outlet 4, as shown in FIG. 28 during the heating operation and as shown in FIG. 29 during the cooling operation, the intake air Aa is the first air in any of these operations. After heat exchange in the heat exchanger 6, the air is blown out from the upper surface outlet 3 as the upper air outlet Ab and from the side air outlet 4 as the side air outlet Ac, and the upper air outlet temperature and the side air outlet temperature are the same. It is said.
[0009]
Accordingly, the function of suppressing the intrusion of radiant heat from the window portion or the like by forming an air barrier near the window or the wall by the upper blown air Ab from the upper surface blowout port 3 and the side blown air Ac from the side blower port 4. However, during heating operation, the temperature on the floor surface side decreases due to the rise of warm air on the indoor floor surface side, and cold air tends to accumulate on the floor surface side during cooling operation, which is ideal for any operation. There is a problem that it is difficult to realize “warm foot heat”, which is a thermal environment, and the comfort of air conditioning is impaired.
[0010]
Therefore, the present invention was made for the purpose of improving the comfort of air conditioning by realizing an ideal thermal environment called “head cold foot heat” without a draft feeling in an indoor unit of a low-rise type air conditioner. .
[Means for Solving the Problems]
[0011]
In the present invention, the following configuration is adopted as a specific means for solving such a problem.
[0012]
In the first invention of the present application, a suction port 2 is provided on the front surface 1a, an upper surface outlet 3 is provided on the upper surface 1b, a side air outlet 4 is provided on the side surface 1c, and the casing 1 installed on the indoor floor 51 side, In the indoor unit of an air conditioner configured by disposing the fan 5, the first heat exchanger 6, and the second heat exchangers 7 and 8, the first heat exchanger 6 is disposed on the upstream side in the blowing direction. 2 The heat exchangers 7 and 8 are respectively positioned on the downstream side in the air blowing direction, and the second heat exchangers 7 and 8 are made to face either the upper surface outlet 3 or the side outlet 4.Further, the temperature of the side blown air Ac blown from the side blower outlet 4 during the heating operation or the cooling operation is set to be higher than the temperature of the upper blown air Ab blown from the upper face blower 3.It is characterized by that.
[0013]
In the second invention of the present application, in the indoor unit of the air conditioner according to the first invention, the second heat exchangers 7 and 8 are formed integrally with the first heat exchanger 6 or separately. It is characterized by that.
[0014]
In the third invention of the present application, a suction port 2 is provided on the front surface 1a, an upper surface air outlet 3 is provided on the upper surface 1b, a side air outlet 4 is provided on the side surface 1c, and the casing 1 installed on the indoor floor surface 51 side, In an indoor unit of an air conditioner configured by disposing a fan 5, a first heat exchanger 6, and a second heat exchanger 7, the second heat exchanger 7 is disposed facing the upper surface outlet 3 In addition, the second heat exchanger 7 is configured to function as an evaporator on the low pressure side during the cooling operation, and to function as an evaporator at a higher pressure than in the cooling operation during the heating operation.
[0015]
In the fourth invention of the present application, a suction port 2 is provided on the front surface 1a, an upper surface air outlet 3 is provided on the upper surface 1b, a side air outlet 4 is provided on the side surface 1c, and the casing 1 installed on the indoor floor surface 51 side, In an indoor unit of an air conditioner configured by arranging a fan 5, a first heat exchanger 6, and a second heat exchanger 8, the second heat exchanger 8 is disposed facing the side air outlet 4 In addition, the second heat exchanger 8 is configured to function as a condenser on the high pressure side during the heating operation, and to function as an evaporator at a lower pressure than in the heating operation during the cooling operation.
[0016]
In the fifth invention of the present application, in the indoor unit of the air conditioner according to the first, second, third or fourth invention, the first heat exchanger 6 and the second heat exchangers 7 and 8 are One or both of them are laminated heat exchangers 30 in which a plurality of flat heat transfer tubes 31 and fins 32 are alternately stacked and both ends of each flat heat transfer tube 31 are connected by headers 33 and 34, respectively. It is characterized by the construction.
[0017]
In the sixth invention of the present application, a suction port 2 is provided on the front surface 1a, an upper surface air outlet 3 is provided on the upper surface 1b, a side air outlet 4 is provided on the side surface 1c, and the casing 1 installed on the indoor floor 51 side, In an indoor unit of an air conditioner configured by arranging a fan 5 and a heat exchanger 6, a heater 15 is provided at the side air outlet 4.The temperature of the side blown air Ac blown from the side blower outlet 4 during the heating operation or the cooling operation is set to be higher than the temperature of the upper blown air Ab blown from the upper face blower 3.It is characterized by that.
[0018]
In the seventh invention of the present application, a suction port 2 is provided on the front surface 1a, an upper surface air outlet 3 is provided on the upper surface 1b, and a side air outlet 4) is provided on the side surface 1c. In the indoor unit of the air conditioner configured by disposing the fan 5 and the heat exchanger 6, the indoor air bypasses the heat exchanger 6 and is placed on either the upper surface 1b or the side surface 1c. Or the circulation mechanism X that blows out to both sidesThe temperature of the side blown air Ac blown from the side blower outlet 4 during the heating operation or the cooling operation is set to be higher than the temperature of the upper blown air Ab blown from the upper face blower 3.It is characterized by that.
【The invention's effect】
[0019]
In the present invention, the following effects can be obtained by adopting such a configuration.
[0020]
(A) In the first invention of the present application, the casing 1 is provided on the indoor floor 51 side, with the suction port 2 on the front surface 1a, the upper surface outlet 3 on the upper surface 1b, the side surface outlet 4 on the side surface 1c. In the indoor unit of the air conditioner configured by disposing the fan 5, the first heat exchanger 6, and the second heat exchangers 7 and 8, the first heat exchanger 6 is placed upstream in the blowing direction. The second heat exchangers 7 and 8 are respectively positioned on the downstream side in the air blowing direction, and the second heat exchangers 7 and 8 are made to face either the upper surface outlet 3 or the side outlet 4.In addition, the temperature of the side blown air Ac blown from the side blower outlet 4 during the heating operation or the cooling operation is set higher than the temperature of the upper blown air Ab blown from the upper face blower 3.
[0021]
Therefore, when the second heat exchanger 7 is provided on the upper surface outlet 3 side, during the cooling operation, the upper surface outlet 3 is moved upward.Upward blown air Ab blown outPasses through both the first heat exchanger 6 and the second heat exchanger 7 and is cooled in both of them, so that only the first heat exchanger 6 passes through the side air outlet 4 to the side.Side blown out air AcThe air temperature is lower, the cooler air is blown to the upper part of the room, and the warmer air is blown to the lower part of the room. A comfortable cooling feeling can be obtained. That is, an operation with an emphasis on cooling comfort is realized.
[0022]
On the other hand, when the said 2nd heat exchanger 8 is provided in the said side surface outlet 4, it is to the side from the said side surface outlet 4 at the time of the heating operation.The side air Ac that is blown out isSince it passes through both the first heat exchanger 6 and the second heat exchanger 8, it passes upward from the upper surface outlet 3 through which only the first heat exchanger 6 passes.Upward blown air Ab blown outThe blowout temperature becomes higher than that, and the rise of warm air near the floor surface is suppressed by the air having a low temperature at the upper part of the room, thereby realizing a “cool head heat” and a comfortable heating feeling. That is, an operation that emphasizes heating comfort is realized.
[0023]
(B) In the second invention of the present application, in the indoor unit of the air conditioner according to the first invention, the second heat exchangers 7 and 8 are integrated with the first heat exchanger 6 or separately. For example, if these two are integrally formed, the manufacturing cost can be reduced by reducing the number of parts or the number of assembly steps, and the indoor unit can be provided at a lower cost. When these are formed separately, the degree of freedom of layout of the first heat exchanger 6 and the second heat exchangers 7 and 8 with respect to the casing 1 is improved, and it is easy to diversify the needs in the form of the indoor unit. It can correspond to.
[0024]
(C) In the third invention of the present application, the casing 1 is provided on the indoor floor 51 side with the suction port 2 on the front surface 1a, the upper surface outlet 3 on the upper surface 1b, and the side surface outlet 4 on the side surface 1c. In an indoor unit of an air conditioner configured by disposing a fan 5, a first heat exchanger 6, and a second heat exchanger 7, the second heat exchanger 7 faces the upper air outlet 3. In addition, the second heat exchanger 7 is configured to function as an evaporator on the low pressure side during the cooling operation, and to function as an evaporator at a higher pressure than during the cooling operation during the heating operation.
[0025]
Therefore, in the second heat exchanger 7 that functions as an evaporator at a lower pressure than the first heat exchanger 6 after being heated in the first heat exchanger 6 from the upper surface outlet 3 during the heating operation. While the cooled relatively low temperature air is blown out, the relatively high temperature air just heated in the first heat exchanger 6 is blown out from the side air outlet 4. The rising of the relatively hot air is suppressed by the relatively cool air in the upper part of the room, thereby realizing “head cold foot heat” and a comfortable heating feeling.
[0026]
On the other hand, during the cooling operation, the upper surface outlet 3 passes through both the first heat exchanger 6 and the second heat exchanger 7 and cools the low-temperature air that is cooled in both of them. A relatively hot air that has passed through only the first heat exchanger 6 is blown out from the side air outlet 4, thereby realizing “head cold foot heat” and effectively suppressing the accumulation of cold air at the feet. A feeling of cooling can be obtained.
[0027]
(D) In the fourth invention of the present application, the casing 1 is provided on the indoor floor 51 side with the suction port 2 on the front surface 1a, the upper surface outlet 3 on the upper surface 1b, and the side surface outlet 4 on the side surface 1c. In an indoor unit of an air conditioner configured by disposing a fan 5, a first heat exchanger 6, and a second heat exchanger 8, the second heat exchanger 8 faces the side air outlet 4. In addition, the second heat exchanger 8 is configured to function as a condenser on the high pressure side during the heating operation and function as an evaporator near the lower pressure than during the heating operation during the cooling operation.
[0028]
Accordingly, after heating in the first heat exchanger 6 from the side air outlet 4 during the heating operation, high-temperature air heated in the second heat exchanger 8 is blown out. Since the air having a relatively low temperature that has been heated in the first heat exchanger 6 is blown out from the upper surface outlet 3, the rising of the relatively hot air in the lower part of the room is relatively low in the upper part of the room. By being held down by the air, a “head cold foot heat” is realized, and a comfortable feeling of heating is obtained.
[0029]
On the other hand, after cooling in the first heat exchanger 6 from the side air outlet 4 during the cooling operation, the second heat exchanger 8 functioning as an evaporator at a higher pressure than the first heat exchanger 6 is provided. While relatively high-temperature air heated by passing is blown out, low-temperature air that has passed only the first heat exchanger 6 is blown out from the upper surface outlet 3. “Chill cold foot fever” is realized, and a cool air feeling at the foot can be effectively suppressed and a comfortable cooling feeling can be obtained.
[0030]
(E) According to the indoor unit of the air conditioner pertaining to the fifth invention of the present application, in the indoor unit of the air conditioner pertaining to the first, second, third, or fourth invention, the first heat exchange One or both of the heat exchanger 6 and the second heat exchangers 7 and 8 are laminated by alternately laminating a plurality of flat heat transfer tubes 31 and fins 32, and both ends of the flat heat transfer tubes 31 are respectively connected to headers 33, 34, the laminated heat exchanger 30 is connected to each other. Therefore, from the characteristics of the laminated heat exchanger 30, for example, the first heat exchanger 6 and the second heat exchangers 7 and 8 are crossed together. As compared with the case where the fin-type heat exchanger is used, the thickness can be reduced, and as a result, the form of the indoor unit can be made compact and the performance can be improved.
[0031]
(F) In the sixth invention of the present application, the casing 1 is provided on the indoor floor 51 side with the suction port 2 on the front surface 1a, the upper surface outlet 3 on the upper surface 1b, and the side surface outlet 4 on the side surface 1c. In an indoor unit of an air conditioner configured by disposing a fan 5 and a heat exchanger 6 therein, a heater 15 is provided at the side air outlet 4.The temperature of the side blown air Ac blown from the side blower outlet 4 during the heating operation or the cooling operation is set to be higher than the temperature of the upper blown air Ab blown from the upper face blower 3.It is characterized by that.
[0032]
Therefore, at the time of heating operation, it is heated in the heat exchanger 6 and blown upward from the upper surface outlet 3.Upward blown air AbIs heated by both the heat exchanger 6 and the heater 15 and blown out from the side outlet 4 to the side.Side blowing air AcTherefore, the rising of the relatively hot air in the lower part of the room is suppressed by the relatively cool air in the upper part of the room, so that “head cold foot heat” is realized and a comfortable heating feeling is obtained.
[0033]
On the other hand, during the cooling operation, after the side air outlet 4 cools in the heat exchanger 6, the relatively high temperature air heated in the heater 15 is blown out as the side air blow Ac. On the other hand, air having a relatively low temperature that has been cooled in the heat exchanger 6 is blown out from the upper surface outlet 3 side, so that air having a relatively low temperature exists in the lower part of the room. Air having a relatively high temperature exists in the upper part, thereby realizing an ideal thermal space “head cold foot heat”, and it is possible to effectively suppress the accumulation of cold air at the feet and obtain a comfortable cooling feeling.
[0034]
(G) In the seventh invention of the present application, the casing 1 is provided on the indoor floor 51 side with the suction port 2 on the front surface 1a, the upper surface outlet 3 on the upper surface 1b, and the side surface outlet 4 on the side surface 1c. In an indoor unit of an air conditioner configured by disposing a fan 5 and a heat exchanger 6 inside, either the upper surface 1b or the side surface 1c of the room air is bypassed by bypassing the heat exchanger 6 Or a circulation mechanism X that blows out to both sidesThe temperature of the side blown air Ac blown from the side blower outlet 4 during heating operation or cooling operation is set to be higher than the temperature of the upper blown air Ab blown from the upper face blower 3.It is characterized by that.
[0035]
Accordingly, when the indoor air is blown out to the upper surface 1b side of the casing 1 by the circulation mechanism X, the air heated by the heat exchanger 6 and the indoor air from the circulation mechanism X during the heating operation. Are mixed and blown upward from the upper surface outlet 3Upward blown air AbWhile the temperature is kept relatively low, the side air outlet 4 has a relatively high temperature heated by the heat exchanger 6.Side blowing air AcIs blown out, and the rise of relatively hot air in the lower part of the room is suppressed by the relatively cool air in the upper part of the room, thereby realizing “head cold foot heat” and a comfortable heating feeling can be obtained. That is, an operation that emphasizes heating comfort is realized.
[0036]
On the other hand, when the indoor air is blown out to the side surface 1c side of the casing 1 by the circulation mechanism X, a relatively low temperature cooled by the heat exchanger 6 from the upper surface outlet 3 side during cooling operation. ofUpward blown air AbIs blown out upward, whereas the side air outlet 4 side has a relatively high temperature in which the air cooled by the heat exchanger 6 and the indoor air from the circulation mechanism X are mixed.Side blowing air AcBy blowing out, cold air accumulation at the feet is prevented as much as possible, and driving with an emphasis on cooling comfort is realized.
DETAILED DESCRIPTION OF THE INVENTION
[0037]
Hereinafter, the present invention will be described in detail based on some preferred embodiments.
[0038]
First, FIG. 1 shows an indoor unit Z of a separate type air conditioner targeted by the present invention. As shown in the figure, this indoor unit Z is a floor-mounted indoor unit that is suitable for reducing the air conditioning load by installing it in a perimeter zone having a particularly high air conditioning load, for example, in the vicinity of the window 53. In addition, it is installed on the indoor floor surface 51 below the window portion 53 along the chamber wall 52, and the conditioned air is blown upward and laterally at the same time, thereby suppressing intrusion of radiant heat from the window portion 53 and the like. While doing indoor air conditioning.
[0039]
The indoor unit Z includes a rectangular casing 1 that is advantageous for wall surface installation, a suction port 2 on the front surface 1a of the casing 1, an upper surface outlet 3 on the upper surface 1b, and left and right side surfaces 1c and 1c. Are provided with side outlets 4 and 4, respectively.
[0040]
A pair of left and right centrifugal fans 5, 5 are juxtaposed in the casing 1 with a predetermined interval in the lateral direction with the suction side facing the suction port 2. A first heat exchanger 6 is provided between the suction side and the suction port 2. in this way,The configuration in which the first heat exchanger 6 is arranged on the suction side of the fan 5 is a basic configuration of the indoor unit Z, and the present invention includes the upper surface facing the blow-out side of the fan 5 in addition to the basic configuration. Of the air outlet 3 and the side air outlet 4, a second heat exchanger 7 is provided on the upper surface air outlet 3, and a second heat exchanger 8 is provided on the side air outlet 4 side. By providing selectively according to conditions, such as an air-conditioning characteristic, it has the characteristic in improving the comfort at the time of air_conditioning | cooling and heating.
[0041]
And when the said 2nd heat exchanger 7 is provided in the said upper surface blower outlet 3, after the said suction air Aa inhaled from the said suction inlet 2 passes the said 1st heat exchanger 6, the one part is Further, it passes through the second heat exchanger 7 and is blown upward as the upper blown air Ab, and the other part is blown from the side blower outlet 4 to the side as the side blown air Ac.
[0042]
Moreover, when the said 2nd heat exchanger 8 is provided in the said side surface outlet 4, the suction air Aa inhaled from the said suction inlet 2 passes through the said 1st heat exchanger 6, and the one part is Further, it passes through the second heat exchanger 8 and is blown out to the side as the side blown air Ac, and the other part is blown upward as it is from the upper face blowout port 3 as the upper blown air Ab.
[0043]
Hereinafter, an indoor unit of an air conditioner according to the present invention will be specifically described based on preferred embodiments.
[0044]
(1) 1st Embodiment (refer FIGS. 2-5)
As shown in FIG. 2, the indoor unit Z <b> 1 according to the first embodiment has the first heat exchanger 6 disposed corresponding to the suction port 2 of the casing 1, and the upper surface outlet 3 and the left and right sides. The side heat outlets 4 and 4 are each provided with a second heat exchanger 8. Accordingly, the suction air Aa sucked from the suction port 2 in accordance with the operation of the fans 5 and 5 passes through the first heat exchanger 6, and a part of the suction air Aa is directly discharged from the upper surface outlet 3 to the upper blowing air Ab. And the other part further passes through the second heat exchanger 8 and then is blown out sideways from the side face outlet 4 as side outlet air Ac.
[0045]
FIG. 3 shows the refrigerant circuit configuration of the entire air conditioner including the indoor unit Z1. This air conditioner is configured by connecting the indoor unit Z1 and the outdoor unit Y by a refrigerant pipe, and on the outdoor unit Y side, there is a compressor 9, a four-way switching valve 10, and an outdoor heat exchange. The indoor unit Z1 is provided with the first heat exchanger 6 and the second heat exchanger 8. In this embodiment, the arrangement of the first heat exchanger 6 and the second heat exchanger 8 is the same as that of the first heat exchanger 6 in the cooling operation cycle. It is set to be located upstream in the circulation direction.
[0046]
Next, the operation and the like of the indoor unit Z1 according to this embodiment during the heating operation and the cooling operation will be described.
[0047]
In the indoor unit Z1 of this embodiment, the second heat exchanger 8 is disposed on the side air outlet 4 side, and no heat exchanger is provided on the upper surface air outlet 3 side. Therefore, the heating operation and the cooling operation are performed. As time passes, the side blowout air Ac blown from the side blower outlet 4 side undergoes a heat exchange action in the first heat exchanger 6 and the second heat exchanger 8, whereas The upper blown air Ab blown from 3 is only subjected to the heat exchange action in the first heat exchanger 6, and as a result, a temperature difference is generated between the side blown air Ac and the upper blown air Ab. It is this indoor unit Z1 that enhances the comfort especially during heating operation by effectively utilizing the temperature difference between the side blowing air Ac and the upper blowing air Ab.
[0048]
That is, during the heating operation of the indoor unit Z1, as shown in FIG. 4, the upper blown air Ab blown out from the upper face blowout port 3 is heated only in the first heat exchanger 6 as shown in FIG. On the other hand, the side blown air Ac blown out from the side blower outlet 4 is heated in both the first heat exchanger 6 and the second heat exchanger 8, so that the upper blown air Ab is set to a relatively low temperature, and the side blowing air Ac is set to a relatively high temperature. As a result, air having a relatively high temperature exists near the floor 51 at the lower part of the room and air having a relatively low temperature exists at the upper part of the room. It is suppressed by the low-temperature air, and an ideal thermal environment, “Chilled Foot Heat” is realized, and a comfortable heating feeling is obtained. That is, an operation that emphasizes heating comfort is realized.
[0049]
On the other hand, during the cooling operation of the indoor unit Z1, as shown in FIG. 5, the low-temperature air that has been cooled by the first heat exchanger 6 and the second heat exchanger 8 from the side air outlet 4 respectively. Is blown out as side blowing air Ac, and air having a relatively high temperature cooled only by the first heat exchanger 6 is blown out from the upper face blowing outlet 3 as upper blowing air Ab. For this reason, if comfort is required even during cooling operation, for example, the side air outlet 4 is closed, or the side air outlet 4 is made to face the wall surface so as to face the side air outlet Ac from the side air outlet 4. What is necessary is just to suppress blowing of.
[0050]
Further, as the first heat exchanger 6 and the second heat exchangers 7 and 8, a “cross fin heat exchanger” is generally adopted, but the indoor unit Z1 is particularly compact. In terms of aiming, either one of the first heat exchanger 6 and the second heat exchangers 7 and 8, or both the first heat exchanger 6 and the second heat exchangers 7 and 8 are shown in FIG. As shown in FIG. 4, a plurality of flat heat transfer tubes 31, 31, .. and a plurality of corrugated fins 32, 32,... Are stacked alternately, and both ends of each flat heat transfer tube 31, 31,. Are constituted by a stacked heat exchanger 30 connected by headers 33 and 34, respectively.
Is preferred.
[0051]
Further, in the case where the pair of fans 5 and 5 are arranged in the casing 1 with a predetermined interval in the lateral direction as in this embodiment, the pair of fans 5 and 5 are generally rotated in the same direction. is there. However, when the pair of fans 5 and 5 are rotated in the same direction as described above, the speed component of the side blown air Ac blown out from the side blower outlet 4 is increased obliquely, and in particular, the cooling operation. At times, the feeling of downdraft increases, which is not preferable in terms of comfort.
[0052]
In order to effectively suppress such a downdraft, it is effective to set the rotation direction of the pair of fans 5 and 5 so as to be outward when viewed from the suction side. On the contrary, when the rotational direction of the pair of fans 5 and 5 is set so as to be inward when viewed from the suction side, the effect of suppressing the downdraft is reduced, but the pair of fans Since the space | interval between the fans 5 and 5 can be narrowed, it is advantageous at the point of the compactization of an indoor unit.
[0053]
Moreover, it can also comprise so that the rotation speed of a pair of said fans 5 and 5 may each be controlled independently, and when it is set as this structure, for example, the fan 5 of the side near a person's area | region has the rotation speed. Zoning corresponding to the degree of air conditioning requirement is possible, for example, the fan 5 on the side close to the area where no people are present can be set to a low speed, and further improvement in comfort can be expected. .
[0054]
Second embodiment (see FIGS. 7 to 9)
In FIG. 7, the refrigerant circuit of the whole air conditioner provided with the indoor unit Z2 concerning 2nd Embodiment of this invention is shown. In the indoor unit Z2 of the first embodiment, the refrigerant path is arranged so that the first heat exchanger 6 is positioned downstream of the second heat exchanger 8 in the cooling cycle in the indoor unit Z1 of the first embodiment. In contrast, the refrigerant path is set such that the first heat exchanger 6 is positioned upstream of the second heat exchanger 8 in the cooling cycle.
[0055]
Therefore, as shown in FIGS. 8 and 9, during the heating operation and the cooling operation, as in the case of the indoor unit Z1 of the first embodiment, the side blowout air Ac from the side outlet 4 is The first heat exchanger 6 and the second heat exchanger 8 are heated or cooled, and the upper blown air Ab from the upper surface outlet 3 is heated or cooled only in the first heat exchanger 6, and this side A temperature difference is generated between the blown air Ac and the upper blown air Ab. As a result, as in the case of the indoor unit Z1 of the first embodiment, an operation that emphasizes comfort particularly during the heating operation is realized.
[0056]
Third embodiment (see FIGS. 10 to 13)
As shown in FIG. 10, the indoor unit Z3 according to the third embodiment includes the first heat exchanger 6 corresponding to the suction port 2 of the casing 1, and the upper surface outlet 3 and the left and right sides. Of the side air outlets 4 and 4, the upper air outlet 3 is provided with a second heat exchanger 7. Accordingly, the suction air Aa sucked from the suction port 2 with the operation of the fans 5 and 5 passes through the first heat exchanger 6, and a part of the suction air Aa is directly discharged from the side blower outlet 4 to the side blowout air. It is blown out to the side as Ac, and the other part further passes through the second heat exchanger 7 and then blows upward as the upper blown air Ab from the upper surface blowout port 3.
[0057]
FIG. 11 shows the refrigerant circuit configuration of the entire air conditioner including the indoor unit Z3. This air conditioner is configured by connecting the indoor unit Z3 and the outdoor unit Y by a refrigerant pipe, and on the outdoor unit Y side, there is a compressor 9, a four-way switching valve 10, and an outdoor heat exchange. And the indoor unit Z3 is provided with the first heat exchanger 6 and the second heat exchanger 7. In this embodiment, the arrangement of the first heat exchanger 6 and the second heat exchanger 7 is the same as that of the first heat exchanger 6 in the cooling operation cycle. It is set to be located downstream in the circulation direction.
[0058]
Next, the operation and the like of the indoor unit Z3 according to this embodiment during the heating operation and the cooling operation will be described.
[0059]
In the indoor unit Z3 of this embodiment, the second heat exchanger 7 is disposed on the upper surface outlet 3 side, and no heat exchanger is provided on the side surface outlet 4, so that the heating operation and the cooling operation are performed. As time passes, the upper blown air Ab blown from the upper face blower outlet 3 side undergoes a heat exchange action in the first heat exchanger 6 and the second heat exchanger 7, whereas the side blower outlet 4 The side blown air Ac blown out from is only subjected to the heat exchange action in the first heat exchanger 6, and as a result, a temperature difference is generated between the side blown air Ac and the upper blown air Ab. It is this indoor unit Z3 that enhances the comfort especially during the cooling operation by effectively utilizing the temperature difference between the side blowing air Ac and the upper blowing air Ab.
[0060]
That is, during the cooling operation of the indoor unit Z3, as shown in FIG. 13, the side air Ac that is blown out from the side air outlet 4 out of the intake air Aa is only in the first heat exchanger 6. While receiving the cooling action, the upper blowing air Ab blown out from the upper face blowing outlet 3 is subjected to the cooling action in both the first heat exchanger 6 and the second heat exchanger 7, so the upper blowing air. Ab is set to a relatively low temperature, and the side blowing air Ac is set to a relatively high temperature. As a result, cooler air is blown out at the upper part of the room, and relatively warm air is blown out at the lower part of the room, thereby realizing “head cold foot heat”, effectively suppressing the accumulation of cold air at the feet and providing a comfortable cooling feeling. Can be obtained. That is, an operation with an emphasis on cooling comfort is realized.
[0061]
During the heating operation of the indoor unit Z3, as shown in FIG. 12, high-temperature air that has been heated by the first heat exchanger 6 and the second heat exchanger 7 from the upper surface outlet 3 respectively. Is blown out as the upper blown air Ab, and air having a relatively low temperature heated only by the first heat exchanger 6 is blown out from the side blower outlet 4 as the side blowout air Ac. For this reason, if comfort is calculated | required also at the time of heating operation, the said upper surface outlet 3 may be obstruct | occluded and the blowing of the upper blowing air Ab from this upper surface outlet 3 may be suppressed, for example.
[0062]
4th Embodiment (refer FIGS. 14-16)
In FIG. 14, the refrigerant circuit of the whole air conditioner provided with the indoor unit Z4 concerning 4th Embodiment of this invention is shown. In the indoor unit Z4 of this embodiment, in the indoor unit Z3 of the third embodiment, the refrigerant path is arranged so that the first heat exchanger 6 is positioned upstream of the second heat exchanger 7 in the cooling cycle. In contrast, the refrigerant path is set so that the first heat exchanger 6 is located downstream of the second heat exchanger 7 in the refrigerant circulation direction in the cooling cycle.
[0063]
Accordingly, as shown in FIGS. 15 and 16, during the heating operation and the cooling operation, the upper blown air Ab from the upper surface outlet 3 is also the same as in the case of the indoor unit Z3 of the third embodiment. Heated or cooled in the first heat exchanger 6 and the second heat exchanger 7, and the side blowout air Ac from the side outlet 4 is heated or cooled only in the first heat exchanger 6. A temperature difference is generated between the blown air Ac and the upper blown air Ab, and, like the indoor unit Z3 of the third embodiment, an operation that emphasizes comfort especially during the cooling operation is realized. is there.
[0064]
Fifth embodiment (see FIGS. 17 to 19)
As with the indoor unit Z1 according to the first embodiment, the indoor unit Z5 according to the fifth embodiment arranges the first heat exchanger 6 corresponding to the suction port 2 of the casing 1. Among the upper surface outlet 3 and the left and right side air outlets 4, 4, the side air outlets 4, 4 are provided with a second heat exchanger 8 (see FIG. 2). Accordingly, the suction air Aa sucked from the suction port 2 in accordance with the operation of the fans 5 and 5 passes through the first heat exchanger 6 and a part of the suction air Aa remains as it is.Top outlet3 is blown upward as the upper blown air Ab, and the other part further passes through the second heat exchanger 8 and then blown laterally from the side blower outlet 4 as the side blowout air Ac.
[0065]
The refrigerant circuit configuration of the entire air conditioner including the indoor unit Z5 is shown in FIG. This air conditioner is configured by connecting the indoor unit Z5 and the outdoor unit Y by a refrigerant pipe, and on the outdoor unit Y side, there is a compressor 9, a four-way switching valve 10, and an outdoor heat exchange. The indoor unit Z5 is provided with the first heat exchanger 6 and the second heat exchanger 8.
[0066]
And in the indoor unit Z5 of this embodiment, while connecting the said 1st heat exchanger 6 and the 2nd heat exchanger 8 via the auxiliary | assistant expansion valve 13, arrangement | positioning structure of these both heat exchangers 6 and 8 Is set so that the second heat exchanger 8 is positioned upstream of the first heat exchanger 6 in the refrigerant circulation direction in the cooling operation cycle.
[0067]
In addition, between the auxiliary expansion valve 13 and the main expansion valve 12 on the outdoor unit Y side, the main expansion valve 12 is set to “throttle”, the auxiliary expansion valve 13 is set to “fully open” during heating operation, and In the cooling operation, the operation relationship between the two is relatively set so that the main expansion valve 12 is “slightly throttle” and the auxiliary expansion valve 13 is “throttle”.
[0068]
Next, the operation and the like of the indoor unit Z5 according to this embodiment during the heating operation and the cooling operation will be described.
[0069]
During the heating operation, as described above, the main expansion valve 12 is “throttle” and the auxiliary expansion valve 13 is “fully open”. Therefore, as shown in FIG. 18, the first heat exchanger 6 and the second heat Both the exchanger 8 functions as a condenser on the high-pressure side, and air having a relatively low temperature heated only by the first heat exchanger 6 is directed upward as the upper blown air Ab from the upper surface outlet 3. While being blown out, relatively high-temperature air heated in the first heat exchanger 6 and the second heat exchanger 8 from the side air outlet 4 is directed to the side as the side air Ac. Blown out. Therefore, the rise of air with relatively high temperature in the lower part of the room is suppressed by air with relatively low temperature in the upper part of the room, thereby realizing an ideal thermal space, “Chill Freezing Heat,” which provides a comfortable feeling of heating. It is done.
[0070]
On the other hand, during the cooling operation, as described above, the main expansion valve 12 is set to “slightly throttle”, and the auxiliary expansion valve 13 is set to “throttle”. Therefore, as shown in FIG. The second heat exchanger 8 functions as an evaporator at an intermediate pressure between the high pressure side and the low pressure side, whereas it functions as an evaporator on the low pressure side. Accordingly, air having a relatively low temperature that has only been cooled in the first heat exchanger 6 is blown upward as the upper blown air Ab from the top blower outlet 3 side, whereas the side blower outlet 4 From the side, after being cooled by the first heat exchanger 6 and then cooled by the second heat exchanger 8 having a higher temperature than this, the air having a relatively high temperature that has been substantially heated is laterally The air is blown out sideways as blown air Ac. As a result, “head cold foot heat”, which is an ideal warm space, is realized, and a comfortable cooling feeling can be obtained by effectively suppressing the accumulation of cold air at the feet.
[0071]
Sixth embodiment (see FIGS. 20 to 22)
In the indoor unit Z6 according to the sixth embodiment, the indoor unit Z5 of the fifth embodiment includes the second heat exchanger 8 on the side air outlet 4 side, and the second heat exchanger in the cooling operation cycle. 8 is arranged on the upstream side in the refrigerant circulation direction of the first heat exchanger 6 via the auxiliary expansion valve 13, whereas the second heat exchanger 7 is provided on the upper surface outlet 3 side, and This is disposed upstream of the first heat exchanger 6 in the refrigerant circulation direction.
[0072]
In the indoor unit Z6 of this embodiment, the main expansion valve 12 is “throttled” between the auxiliary expansion valve 13 and the main expansion valve 12 on the outdoor unit Y side during heating operation, and the auxiliary expansion valve 13 is set to “slightly throttle”, and the operation relationship between the two is relatively set so that the main expansion valve 12 is “throttle” and the auxiliary expansion valve 13 is “fully open” during the cooling operation. ing.
[0073]
Next, the operation and the like of the indoor unit Z6 according to this embodiment during the heating operation and the cooling operation will be described.
[0074]
During the heating operation, as described above, the main expansion valve 12 is “throttle” and the auxiliary expansion valve 13 is “slightly throttle”. Therefore, as shown in FIG. 21, the first heat exchanger 6 is on the high-pressure side. The second heat exchanger 7 functions as an evaporator at an intermediate pressure between the high pressure side and the low pressure side. Therefore, the upper blown air Ab blown upward from the upper surface blower outlet 3 is heated in the first heat exchanger 6 and then the second heat exchanger 7 functioning as an evaporator at an intermediate pressure. The air is cooled by passing through, and the air is relatively cool. On the other hand, since the side blowing air Ac blown out from the side blower outlet 4 to the side is only heated in the first heat exchanger 6, the air is relatively hot. Thus, air having a relatively high temperature exists in the upper part of the room, and air having a relatively low temperature exists in the upper part of the room. As a result, the rising of the relatively hot air in the lower part of the room is suppressed by the relatively cool air in the upper part of the room, so that “head cold foot heat” is realized and a comfortable heating feeling is obtained.
[0075]
On the other hand, during the cooling operation, as described above, the main expansion valve 12 is “throttle” and the auxiliary expansion valve 13 is “fully open”. Therefore, as shown in FIG. Both the two heat exchangers 7 function as an evaporator on the low pressure side. Therefore, the upper blown air Ab blown upward from the upper face blower outlet 3 is cooled in both the first heat exchanger 6 and the second heat exchanger 7, whereas the side blower The side blown air Ac blown out from the outlet 4 to the side is cooled only in the first heat exchanger 6, air having a relatively low temperature is present in the upper part of the room, and the temperature is relatively lower in the lower part of the room. There will be high air. As a result, “head cold foot heat”, which is an ideal warm space, is realized, and a comfortable cooling feeling can be obtained by effectively suppressing the accumulation of cold air at the feet.
[0076]
Seventh embodiment (see FIG. 23)
In the indoor unit Z7 according to the seventh embodiment, in the indoor units Z1 to Z6 according to the first to sixth embodiments, the second heat exchangers 7 and 8 are provided to improve the comfort during cooling and heating. In contrast to the above, the heater 15 is provided on the blow-out side of the fan 5 to improve the comfort during cooling and heating.
[0077]
That is, in this indoor unit Z7, as shown in FIG. 23, the heat exchanger 6 is disposed only on the suction side of the fan 5, while the heat exchanger is not provided on the outlet side of the fan 5, A heater 15 is disposed at the side air outlet 4. The heater 15 is energized both during the heating operation and during the cooling operation.
[0078]
By setting it as this structure, after heating in the said heat exchanger 6 from the said side blower outlet 4 at the time of heating operation, the air with comparatively high temperature further heated in the said heater 15 is used as side blowing air Ac. On the other hand, air having a relatively low temperature that is heated in the heat exchanger 6 is blown out from the upper surface outlet 3 side. As a result, air with a relatively low temperature exists in the upper part of the room, air with a relatively high temperature exists in the lower part of the room, and the relatively hot air in the lower part of the room rises. By pressing it down, a “head cold foot heat” is realized and a comfortable heating feeling is obtained.
[0079]
On the other hand, during the cooling operation, after the side air outlet 4 cools in the heat exchanger 6, the relatively high temperature air heated in the heater 15 is blown out as the side air blow Ac. On the other hand, air having a relatively low temperature that has been cooled in the heat exchanger 6 is blown out from the upper surface outlet 3 side. As a result, air with a relatively low temperature exists in the lower part of the room, and air with a relatively high temperature exists in the upper part of the room, realizing an ideal thermal space, “head cold foot heat”. It can be effectively suppressed and a comfortable cooling feeling can be obtained.
[0080]
Eighth embodiment
FIG. 24 shows an indoor unit Z8 according to the eighth embodiment. This indoor unit Z8 does not control the blown air temperature of the upper blown air Ab and the side blown air Ac like the indoor units Z1 to Z7 of the first to seventh embodiments. The air that is lower in temperature than the conditioned air blown from the indoor unit during the heating operation, and the air that is higher in temperature than the conditioned air during the cooling operation) bypasses the heat exchanger 6 and is returned to the room to return to the upper blown air Ab. The temperature of the side blowing air Ac is adjusted to ensure the comfort of air conditioning.
[0081]
That is, in this indoor unit Z8, as shown in FIG. 24, the curved bypass path 20 and the bypass path extending from the upper part of the suction port 2 to the vicinity of the upper surface outlet 3 on the upper surface of the casing 1 A circulation mechanism X including a fan 21 arranged in the inside 20 is provided.
[0082]
By adopting such a configuration, in particular during heating operation, after being heated by the heat exchanger 6, the upper blowing air Ab blown upward from the upper surface outlet 3 and the circulation mechanism X are used. The indoor air Ab ′ blown upward from the vicinity of the upper surface outlet 3 is mixed to make the upper outlet temperature relatively low, while being heated in the heat exchanger 6 from the side outlet 4. Air with a relatively high temperature is blown out as side blowing air Ac, and the relatively low temperature air at the upper part of the room suppresses the rise of relatively hot air at the lower part of the room, thereby realizing "head cold foot heat" and comfortable. A feeling of cooling is obtained. During the cooling operation, the operation of the circulation mechanism X is stopped.
[0083]
Ninth embodiment
FIG. 25 shows an indoor unit Z9 according to the ninth embodiment. In this indoor unit Z9, the indoor unit Z8 according to the eighth embodiment emphasizes comfort during heating operation, whereas the indoor unit Z9 according to this embodiment provides comfort during cooling operation. It is important.
[0084]
That is, in this indoor unit Z9, on both the left and right sides of the indoor unit Z9, a bypass path 22 that bypasses the heat exchanger 6 and communicates with the vicinity of the suction port 2 and the side air outlets 4 is provided in the bypass path 22. Circulation mechanisms X composed of the fans 23 are arranged.
[0085]
Therefore, at the time of the cooling operation, the side air outlet 4 is provided to the side of the indoor unit Z8 by the side air outlet Ac from the side air outlet 4 cooled in the heat exchanger 6 and the circulation mechanism X. The air having a relatively high temperature mixed with the indoor air Ac 'blown out in the vicinity of is blown out. On the other hand, above the indoor unit Z8, the low-temperature air cooled by the heat exchanger 6 is directly blown out as the upper blowing air Ab from the upper surface outlet 3 side. As a result, air with a relatively low temperature exists in the upper part of the room and air with a relatively high temperature exists in the lower part of the room. A comfortable cooling feeling without accumulation can be obtained.
[Brief description of the drawings]
[0086]
FIG. 1 is a perspective view showing an installation state of an indoor unit of an air conditioner according to the present invention.
FIG. 2 is a cross-sectional view showing an arrangement structure of a heat exchanger of the indoor unit in the air conditioner according to the first embodiment of the present invention.
FIG. 3 is a refrigerant circuit diagram of the air conditioner shown in FIG.
4 is an operation diagram of the air conditioner shown in FIG. 2 during a heating operation.
FIG. 5 is an operation diagram of the air conditioner shown in FIG. 2 during cooling operation.
FIG. 6 is a front view showing the structure of a stacked heat exchanger.
FIG. 7 is a refrigerant circuit diagram of an air conditioner according to a second embodiment of the present invention.
8 is an operation diagram of the air conditioner shown in FIG. 7 during heating operation.
FIG. 9 is an operation diagram of the air conditioner shown in FIG. 7 during cooling operation.
FIG. 10 is a cross-sectional view showing an arrangement structure of a heat exchanger of an indoor unit in an air conditioner according to a third embodiment of the present invention.
11 is a refrigerant circuit diagram of the air conditioner shown in FIG.
12 is an operation diagram of the air conditioner shown in FIG. 10 during a heating operation.
13 is an operation diagram of the air conditioner shown in FIG. 10 during cooling operation.
FIG. 14 is a refrigerant circuit diagram of an air conditioner according to a fourth embodiment of the present invention.
15 is an operation diagram of the air conditioner shown in FIG. 14 during heating operation.
16 is an operation diagram of the air conditioner shown in FIG. 14 during cooling operation.
FIG. 17 is a refrigerant circuit diagram of an air conditioner according to a fifth embodiment of the present invention.
18 is an operation diagram of the air conditioner shown in FIG. 17 during a heating operation.
FIG. 19 is an operation diagram of the air conditioner shown in FIG. 17 during cooling operation.
FIG. 20 is a refrigerant circuit diagram of an air conditioner according to a sixth embodiment of the present invention.
FIG. 21 is an operation diagram of the air conditioner shown in FIG. 20 during heating operation.
22 is an operation diagram of the air conditioner shown in FIG. 20 during cooling operation.
FIG. 23 is a refrigerant circuit diagram of an air conditioner according to a seventh embodiment of the present invention.
FIG. 24 is a cross-sectional view of an indoor unit in an air conditioner according to an eighth embodiment of the present invention.
FIG. 25 is a cross-sectional view of an indoor unit in an air conditioner according to a ninth embodiment of the present invention.
FIG. 26 is a cross-sectional view showing an arrangement structure of a heat exchanger of an indoor unit in a conventional air conditioner.
FIG. 27 is a refrigerant circuit diagram of a conventional air conditioner.
FIG. 28 is an operation diagram of the conventional air conditioner during heating operation.
FIG. 29 is an operation diagram of the conventional air conditioner during cooling operation.
[Explanation of symbols]
[0087]
1 is a casing, 2 is a suction port, 3 is an upper air outlet, 4 is a side air outlet, 5 is a fan, 6 is a first heat exchanger, 7 is a second heat exchanger, 8 is a second heat exchanger, 9 Is a compressor, 10 is a four-way switching valve, 11 is an outdoor heat exchanger, 12 and 13 are expansion valves, 14 is an on-off valve, 15 is a heater, 20 is a bypass path, 21 is a fan, 22 is a bypass path, 23 Is a fan, 30 is a laminated heat exchanger, 31 is a flat heat transfer tube, 32 is a corrugated fin, 33 and 34 are headers, 51 is an indoor floor, 52 is a room wall, 53 is a window, Aa is intake air, Ab Is an upward blown air, Ac is a side blown air, X is a circulation mechanism, Y is an outdoor unit, and Z and Z0 to Z9 are indoor units.

Claims (7)

前面（１ａ）に吸込口（２）を、上面（１ｂ）に上面吹出口（３）を、側面（１ｃ）に側面吹出口（４）をそれぞれ設け且つ室内床面（５１）側に設置されるケーシング（１）内に、ファン（５）と第１熱交換器（６）と第２熱交換器（７，８）とを配置して構成される空気調和機の室内機であって、
上記第１熱交換器（６）を送風方向上流側に、上記第２熱交換器（７，８）を送風方向下流側にそれぞれ位置させるとともに、該第２熱交換器（７，８）を上記上面吹出口（３）と上記側面吹出口（４）の何れか一方に臨ませ且つ暖房運転時又は冷房運転時において上記側面吹出口（４）より吹き出される側方吹出空気（Ａｃ）の温度が上記上面吹出口（３）より吹き出される上方吹出空気（Ａｂ）の温度より高温となるようにしたことを特徴とする空気調和機の室内機。A suction port (2) is provided on the front surface (1a), an upper surface outlet (3) is provided on the upper surface (1b), and a side air outlet (4) is provided on the side surface (1c). An air conditioner indoor unit configured by disposing a fan (5), a first heat exchanger (6), and a second heat exchanger (7, 8) in a casing (1).
The first heat exchanger (6) is positioned on the upstream side in the blowing direction, the second heat exchanger (7, 8) is positioned on the downstream side in the blowing direction, and the second heat exchanger (7, 8) is positioned on the downstream side. Side air (Ac) that faces either one of the top outlet (3) and the side outlet (4) and is blown out from the side outlet (4) during heating operation or cooling operation. An indoor unit of an air conditioner, characterized in that the temperature is higher than the temperature of the upper blown air (Ab) blown out from the upper face blowout port (3) . 請求項１において、
上記第２熱交換器（７，８）を上記第１熱交換器（６）と一体に、又は別体に形成したことを特徴とする空気調和機の室内機。In claim 1,
The indoor unit of an air conditioner, wherein the second heat exchanger (7, 8) is formed integrally with the first heat exchanger (6) or separately. 前面（１ａ）に吸込口（２）を、上面（１ｂ）に上面吹出口（３）を、側面（１ｃ）に側面吹出口（４）をそれぞれ設け且つ室内床面（５１）側に設置されるケーシング（１）内に、ファン（５）と第１熱交換器（６）と第２熱交換器（７）とを配置して構成される空気調和機の室内機であって、
上記第２熱交換器（７）を上記上面吹出口（３）に臨ませて配置するとともに、該第２熱交換器（７）を冷房運転時には低圧側で蒸発器として機能させ、暖房運転時には冷房運転時よりも高圧寄りで蒸発器として機能させるように構成したことを特徴とする空気調和機の室内機。A suction port (2) is provided on the front surface (1a), an upper surface outlet (3) is provided on the upper surface (1b), and a side air outlet (4) is provided on the side surface (1c). An air conditioner indoor unit configured by disposing a fan (5), a first heat exchanger (6), and a second heat exchanger (7) in a casing (1).
The second heat exchanger (7) is arranged facing the upper air outlet (3), and the second heat exchanger (7) functions as an evaporator on the low pressure side during the cooling operation, and during the heating operation. An air conditioner indoor unit configured to function as an evaporator at a higher pressure than during cooling operation. 前面（１ａ）に吸込口（２）を、上面（１ｂ）に上面吹出口（３）を、側面（１ｃ）に側面吹出口（４）をそれぞれ設け且つ室内床面（５１）側に設置されるケーシング（１）内に、ファン（５）と第１熱交換器（６）と第２熱交換器（８）とを配置して構成される空気調和機の室内機であって、
上記第２熱交換器（８）を上記側面吹出口（４）に臨ませて配置するとともに、該第２熱交換器（８）を暖房運転時には高圧側で凝縮器として、冷房運転時に暖房運転時よりも低圧寄りで蒸発器として機能させるように構成したことを特徴とする空気調和機の室内機。A suction port (2) is provided on the front surface (1a), an upper surface outlet (3) is provided on the upper surface (1b), and a side air outlet (4) is provided on the side surface (1c). An air conditioner indoor unit comprising a fan (5), a first heat exchanger (6), and a second heat exchanger (8) arranged in a casing (1).
The second heat exchanger (8) is arranged facing the side air outlet (4), and the second heat exchanger (8) is used as a condenser on the high pressure side during heating operation, and heating operation is performed during cooling operation. An air conditioner indoor unit configured to function as an evaporator at a lower pressure than the time. 請求項１，２，３又は４において、
上記第１熱交換器（６）と上記第２熱交換器（７，８）の何れか一方又は双方を、複数本の偏平伝熱管（３１）とフィン（３２）とを交互に積層するとともに該各偏平伝熱管（３１）の両端をそれぞれヘッダー（３３），（３４）によって接続してなる積層型熱交換器（３０）で構成したことを特徴とする空気調和機の室内機。In claim 1, 2, 3 or 4,
While laminating one or both of the first heat exchanger (6) and the second heat exchanger (7, 8) with a plurality of flat heat transfer tubes (31) and fins (32) alternately An indoor unit of an air conditioner comprising a laminated heat exchanger (30) in which both ends of each flat heat transfer tube (31) are connected by headers (33) and (34), respectively. 前面（１ａ）に吸込口（２）を、上面（１ｂ）に上面吹出口（３）を、側面（１ｃ）に側面吹出口（４）をそれぞれ設け且つ室内床面（５１）側に設置されるケーシング（１）内に、ファン（５）と熱交換器（６）とを配置して構成される空気調和機の室内機であって、
上記側面吹出口（４）にヒーター（１５）を設け、暖房運転時又は冷房運転時において上記側面吹出口（４）より吹き出される側方吹出空気（Ａｃ）の温度が上記上面吹出口（３）より吹き出される上方吹出空気（Ａｂ）の温度より高温となるようにしたことを特徴とする空気調和機の室内機。A suction port (2) is provided on the front surface (1a), an upper surface outlet (3) is provided on the upper surface (1b), and a side air outlet (4) is provided on the side surface (1c). An air conditioner indoor unit configured by disposing a fan (5) and a heat exchanger (6) in a casing (1).
A heater (15) is provided at the side air outlet (4), and the temperature of the side air (Ac) blown out from the side air outlet (4) during heating operation or cooling operation is such that the temperature of the upper air outlet (3 An indoor unit of an air conditioner characterized in that the temperature is higher than the temperature of the upper blown air (Ab) blown out from the air. 前面（１ａ）に吸込口（２）を、上面（１ｂ）に上面吹出口（３）を、側面（１ｃ）に側面吹出口（４）をそれぞれ設け且つ室内床面（５１）側に設置されるケーシング（１）内に、ファン（５）と熱交換器（６）とを配置して構成される空気調和機の室内機であって、
室内空気を上記熱交換器（６）を迂回させて上記上面（１ｂ）と上記側面（１ｃ）の何れか一方側に、又はこれら双方側に吹き出すサーキュレーション機構（Ｘ）を設け、暖房運転時又は冷房運転時において上記側面吹出口（４）より吹き出される側方吹出空気（Ａｃ）の温度が上記上面吹出口（３）より吹き出される上方吹出空気（Ａｂ）の温度より高温となるようにしたことを特徴とする空気調和機の室内機。A suction port (2) is provided on the front surface (1a), an upper surface outlet (3) is provided on the upper surface (1b), and a side air outlet (4) is provided on the side surface (1c). An air conditioner indoor unit configured by disposing a fan (5) and a heat exchanger (6) in a casing (1).
A circulation mechanism (X) that blows indoor air around the heat exchanger (6) and blows it to one or both of the upper surface (1b) and the side surface (1c) is provided during heating operation. Alternatively, the temperature of the side blowing air (Ac) blown from the side blower outlet (4) during the cooling operation is higher than the temperature of the upper blowing air (Ab) blown from the upper face blower outlet (3). An air conditioner indoor unit characterized by that.
JP2001006296A 2001-01-15 2001-01-15 Air conditioner indoor unit Expired - Fee Related JP3624836B2 (en)

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AU2002219519A AU2002219519B9 (en) 2001-01-15 2001-12-25 Indoor unit for air conditioner
PCT/JP2001/011318 WO2002055937A1 (en) 2001-01-15 2001-12-25 Indoor unit for air conditioner
AT01273084T ATE425420T1 (en) 2001-01-15 2001-12-25 INDOOR UNIT FOR AIR CONDITIONING
EP01273084A EP1361398B1 (en) 2001-01-15 2001-12-25 Indoor unit for air conditioner
DE60137968T DE60137968D1 (en) 2001-01-15 2001-12-25 INDOOR UNIT FOR AIR CONDITIONING
ES01273084T ES2322022T3 (en) 2001-01-15 2001-12-25 INTERIOR AIR CONDITIONING UNIT.

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Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040042163A (en) * 2002-11-13 2004-05-20 주식회사 대우일렉트로닉스 Indoor machine of air conditioner
BRPI0418586B1 (en) 2004-03-04 2015-11-24 Lg Electronics Inc indoor unit of an air conditioner
JP4529530B2 (en) * 2004-04-26 2010-08-25 ダイキン工業株式会社 Humidity control device
CN100455910C (en) * 2004-06-21 2009-01-28 乐金电子(天津)电器有限公司 Indoor unit of air conditioner
DE202004012840U1 (en) * 2004-08-16 2004-10-14 Löffler, Bernd Workroom air coolers
KR20060017040A (en) * 2004-08-19 2006-02-23 엘지전자 주식회사 Stand type airconditioner indoor unit
WO2006080793A2 (en) * 2005-01-27 2006-08-03 Lg Electronics, Inc. Indoor unit of air conditioner
JP2006336910A (en) * 2005-05-31 2006-12-14 Daikin Ind Ltd Indoor unit for air conditioner
KR100755139B1 (en) * 2005-10-05 2007-09-04 엘지전자 주식회사 Air conditioner
FR2947040B1 (en) * 2009-06-23 2014-01-03 Cinier Radiateurs REVERSIBLE RADIATOR
EP2551607B1 (en) * 2011-07-28 2018-10-17 LG Electronics Inc. Ventilation apparatus
CN103574863B (en) * 2012-07-25 2016-12-21 珠海格力电器股份有限公司 Indoor apparatus of air conditioner
KR20160016436A (en) * 2014-08-05 2016-02-15 삼성전자주식회사 Air conditioner
CN104214920B (en) * 2014-09-19 2017-10-03 珠海格力电器股份有限公司 Air conditioner air-out structure and air conditioner
CN104296243A (en) * 2014-09-30 2015-01-21 美的集团武汉制冷设备有限公司 Indoor wall-mounted unit and air-conditioner comprising indoor wall-mounted unit
KR102530178B1 (en) * 2016-01-07 2023-05-10 삼성전자주식회사 Air conditioner
CN105757802A (en) * 2016-04-19 2016-07-13 宁波奥克斯空调有限公司 Wall-hanging type air conditioner
DE102016111136A1 (en) * 2016-06-17 2017-12-21 Güntner Gmbh & Co. Kg Air cooler for cooling the air in rooms, especially in walk-in storage or cold storage rooms
EP3382287B1 (en) * 2017-03-31 2023-05-10 Mitsubishi Electric R&D Centre Europe B.V. Fan coil unit
AU2018331011B2 (en) * 2017-09-12 2021-04-01 Gd Midea Air-Conditioning Equipment Co., Ltd. Air conditioner
CN113154530A (en) * 2017-09-12 2021-07-23 广东美的制冷设备有限公司 Air conditioner
US11391494B2 (en) * 2020-08-10 2022-07-19 Donald Eugene Smith Multiple directional blow unit cooler
CN112283800A (en) * 2020-09-16 2021-01-29 珠海格力电器股份有限公司 Machine and air conditioner in air conditioning
CN112212408A (en) * 2020-10-20 2021-01-12 青岛海信日立空调系统有限公司 Indoor unit of air conditioner
CN112902377B (en) * 2021-02-10 2022-02-18 珠海格力电器股份有限公司 Control system of air conditioner

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5596329U (en) * 1978-12-26 1980-07-04
JPS63187028A (en) * 1987-01-29 1988-08-02 Toshiba Corp Air conditioner
JPH06241491A (en) * 1993-02-12 1994-08-30 Sharp Corp Mounting structure of heat-exchanger
JP3283706B2 (en) * 1994-10-03 2002-05-20 東芝キヤリア株式会社 Air conditioner
JPH09264557A (en) * 1996-03-26 1997-10-07 Daikin Ind Ltd Air conditioner
JP3223819B2 (en) * 1996-11-15 2001-10-29 ダイキン工業株式会社 Air conditioner
JP2947236B2 (en) * 1997-08-08 1999-09-13 ダイキン工業株式会社 Air outlet structure of air conditioner
JP3061026B2 (en) * 1997-12-18 2000-07-10 ダイキン工業株式会社 Air conditioner indoor unit

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