JPH08105652A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH08105652A JPH08105652A JP6239303A JP23930394A JPH08105652A JP H08105652 A JPH08105652 A JP H08105652A JP 6239303 A JP6239303 A JP 6239303A JP 23930394 A JP23930394 A JP 23930394A JP H08105652 A JPH08105652 A JP H08105652A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- indoor
- air
- air conditioner
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、ヒートポンプを熱源
とした冷凍サイクルを備えた空気調和装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner equipped with a refrigeration cycle using a heat pump as a heat source.
【０００２】[0002]
【従来の技術】近年、暖房と冷房とを兼用できる家庭用
ヒートポンプ式空気調和装置の普及は、低価格化に伴っ
て格段に進みつつある。このような空気調和装置におけ
る室内ユニットの形態の主流は、設置スペース的な問題
から天井に近い壁に取り付ける細長タイプ、すなわちス
タイリッシュタイプである。この形態の特徴として、冷
房運転時には、冷気が下方に降りてくるため、部屋全体
が均一に冷却され問題が少ないものの、足元が冷えて不
快になり、一方、暖房運転時においては、暖気が床面に
届きにくいため、足元の床面が暖まりにくく、暖房快適
感に物足りなさが残る。2. Description of the Related Art In recent years, a heat pump type air conditioner for home use, which can be used for both heating and cooling, has become widespread with a reduction in price. The mainstream form of the indoor unit in such an air conditioner is a slender type, that is, a stylish type, which is attached to a wall near the ceiling because of installation space problems. As a feature of this form, during the cooling operation, the cold air comes down downward, so that the entire room is cooled uniformly and there are few problems, but the feet are cold and uncomfortable.On the other hand, during the heating operation, the warm air is on the floor. Since it is hard to reach the surface, it is difficult for the floor surface under the floor to warm up, leaving unsatisfactory heating comfort.
【０００３】これに対し、室内ユニットを床面近傍に配
置する形態とすれば、暖房運転時での暖気を床面に這わ
せることができ、暖房快適感が向上する。ところが、こ
の形態の設置方式では、冷房運転時に冷気が床面に近く
届き、部屋全体を均一温度にしにくいため、効率が悪
く、冷房快適感を得ることは難しい。On the other hand, when the indoor unit is arranged near the floor surface, warm air during heating operation can be made to crawl on the floor surface, and the comfort of heating is improved. However, in the installation method of this embodiment, the cool air reaches the floor surface during the cooling operation, and it is difficult to make the temperature of the entire room uniform, so that the efficiency is poor and it is difficult to obtain a comfortable cooling feeling.
【０００４】[0004]
【発明が解決しようとする課題】このように、室内ユニ
ットを床面近くに設置した場合には、暖房快適感が得ら
れるが、冷房運転時には、効率が悪く、快適感が得られ
ないという問題がある。As described above, when the indoor unit is installed near the floor surface, a comfortable heating feeling can be obtained, but during cooling operation, the efficiency is poor and the comfortable feeling cannot be obtained. There is.
【０００５】そこで、この発明は、室内ユニットを床面
近くに設置したとしても、冷房運転時での快適感が得ら
れるようにすることを目的としている。Therefore, an object of the present invention is to provide a comfortable feeling during cooling operation even when the indoor unit is installed near the floor surface.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
に、この発明は、圧縮機，室外熱交換器，絞り機構およ
び室内熱交換器がそれぞれ配管接続された冷凍サイクル
を備えた空気調和装置において、前記室内熱交換器を、
室内ユニットに配置される状態にて下部側の第１熱交換
器と上部側の第２熱交換器とに二分割するとともに、こ
れら第１，第２両熱交換器相互間に絞り機構を設け、冷
房運転時に冷凍サイクルを循環する冷媒を前記第１熱交
換器から第２熱交換器に向けて流れるよう構成し、前記
第１熱交換器を通過した熱交換後の室内空気を室内に吹
出す第１吹出口を、第２熱交換器を通過した熱交換後の
室内空気を室内に吹出す第２吹出口より、室内ユニット
における下部側に設けた構成としてある。In order to achieve the above object, the present invention is an air conditioner having a refrigeration cycle in which a compressor, an outdoor heat exchanger, a throttle mechanism and an indoor heat exchanger are connected by piping. In, the indoor heat exchanger,
It is divided into a first heat exchanger on the lower side and a second heat exchanger on the upper side while being arranged in the indoor unit, and a throttling mechanism is provided between the first and second heat exchangers. The refrigerant circulating in the refrigeration cycle during the cooling operation is configured to flow from the first heat exchanger to the second heat exchanger, and the indoor air after heat exchange that has passed through the first heat exchanger is blown into the room. The first outlet is provided on the lower side of the indoor unit from the second outlet that blows out the indoor air after heat exchange that has passed through the second heat exchanger into the room.
【０００７】[0007]
【作用】このような構成の空気調和装置によれば、圧縮
機から吐出された高温・高圧のガス冷媒は、室外熱交換
器で凝縮し、絞り機構で絞られた後、気液二層状態とな
って、室内ユニットの下部側の第１熱交換器に流入し室
内空気と熱交換して蒸発し、さらに絞り機構によって絞
られて上部側の第２熱交換器に流入し、ここで冷媒は第
１熱交換器より低い温度で蒸発する。第１熱交換器での
蒸発温度が高く、第２熱交換器の蒸発温度が低いので、
第１熱交換器を通過して熱交換され下部側の第１吹出口
から吹出される室内空気の温度は高く、第２熱交換器を
通過して熱交換され上部側の第２吹出口から吹出される
室内空気の温度は低いものとなる。According to the air conditioner having such a structure, the high-temperature and high-pressure gas refrigerant discharged from the compressor is condensed by the outdoor heat exchanger and is throttled by the throttling mechanism, and then the gas-liquid two-layer state is obtained. Then, it flows into the first heat exchanger on the lower side of the indoor unit, exchanges heat with the indoor air to evaporate, is further throttled by the throttling mechanism, and flows into the second heat exchanger on the upper side. Evaporates at a lower temperature than the first heat exchanger. Since the evaporation temperature in the first heat exchanger is high and the evaporation temperature in the second heat exchanger is low,
The temperature of the room air passing through the first heat exchanger and being heat-exchanged and blown out from the lower first outlet is high, and the temperature of the indoor air passing through the second heat exchanger is heat-exchanged and is higher than the upper second outlet. The temperature of the indoor air blown out is low.
【０００８】[0008]
【実施例】以下、この発明の実施例を図面に基づき説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１は、この発明の一実施例を示す空気調
和装置に使用される冷凍サイクル構成図である。この冷
凍サイクルは、冷房運転時での冷媒の流れる順に構成要
素を述べると、圧縮機１、暖房時と冷房時とで冷媒の流
れ方向が切り替わる四方弁３、室外熱交換器５、絞り機
構であるメイン電子膨張弁７、室内熱交換器９である。
室外熱交換器５は、室外ファン１１を備えており、圧縮
機１，四方弁３およびメイン電子膨張弁７とともに室外
に設置される室外ユニットを構成している。FIG. 1 is a block diagram of a refrigeration cycle used in an air conditioner showing an embodiment of the present invention. This refrigeration cycle is composed of a compressor 1, a four-way valve 3 that switches the flow direction of the refrigerant between heating and cooling, an outdoor heat exchanger 5, and a throttling mechanism. A main electronic expansion valve 7 and an indoor heat exchanger 9.
The outdoor heat exchanger 5 includes an outdoor fan 11, and together with the compressor 1, the four-way valve 3 and the main electronic expansion valve 7, constitutes an outdoor unit installed outdoors.
【００１０】室内熱交換器９は、室内に設置される室内
ユニット１１内において、下部側の第１熱交換器９ａと
上部側の第２熱交換器９ｂとに二分割されている。第１
熱交換器９ａと第２熱交換器９ｂとの間の配管途中に
は、サブ絞り機構であるサブ電子膨張弁１３が設けら
れ、冷房運転時おいて冷媒は、第１熱交換器９ａ→サブ
電子膨張弁１３→第２熱交換器９ｂの順に流れる。The indoor heat exchanger 9 is divided into a first heat exchanger 9a on the lower side and a second heat exchanger 9b on the upper side in an indoor unit 11 installed indoors. First
A sub electronic expansion valve 13, which is a sub throttle mechanism, is provided in the middle of the pipe between the heat exchanger 9a and the second heat exchanger 9b, and the refrigerant during the cooling operation is the first heat exchanger 9a → the sub The electronic expansion valve 13 and the second heat exchanger 9b flow in this order.
【００１１】室内ユニット１１内には、第１熱交換器９
ａと第２熱交換器９ｂとにそれぞれ対応して送風機とし
ての第１送風ファン１５ａおよび第２側送風ファン１５
ｂが設置されている。第１送風ファン１５ａにより第１
熱交換器９ａを通って熱交換された室内空気は、室内ユ
ニット１１の下部に形成された第１吹出口１７から室内
に吹出される。一方、第２送風ファン１５ｂにより第２
熱交換器９ｂを通って熱交換された室内空気は、室内ユ
ニット１１の上部に形成された第２吹出口１９から室内
に吹出される。上記した室内ユニット１１は、室内にお
ける上下方向の中央部分より下方の壁に取付面２１によ
って取り付けられか、または床面に設置される。In the indoor unit 11, the first heat exchanger 9
a and the second side heat exchanger 9b respectively corresponding to the first blower fan 15a and the second side blower fan 15 as blowers.
b is installed. First by the first blower fan 15a
The indoor air that has undergone heat exchange through the heat exchanger 9a is blown out into the room from the first outlet 17 formed in the lower portion of the indoor unit 11. On the other hand, by the second blower fan 15b,
The indoor air that has undergone heat exchange through the heat exchanger 9b is blown out into the room from the second air outlet 19 formed in the upper part of the indoor unit 11. The indoor unit 11 described above is attached to the wall below the central portion in the vertical direction in the room by the attachment surface 21, or is installed on the floor.
【００１２】冷房運転時には、圧縮機１から吐出された
高温・高圧のガス冷媒は、破線矢印で示すように、四方
弁３を経て室外熱交換器５で室外空気と熱交換して凝縮
した後、メイン電子膨脹弁７で絞られ、冷媒は気液二層
状態となる。その後、室内熱交換器９で室内空気と熱交
換した冷媒は蒸発し、冷温・低圧のガスになった後、圧
縮機１で高温・高圧ガスに圧縮され、冷凍サイクルが一
巡する。During the cooling operation, the high-temperature, high-pressure gas refrigerant discharged from the compressor 1 passes through the four-way valve 3 to exchange heat with the outdoor air in the outdoor heat exchanger 5 and is condensed as shown by the broken line arrow. The main electronic expansion valve 7 restricts the refrigerant, and the refrigerant is in a gas-liquid two-layer state. After that, the refrigerant that has exchanged heat with the indoor air in the indoor heat exchanger 9 evaporates to become a cold, low-pressure gas, and then is compressed into a high-temperature, high-pressure gas by the compressor 1 to complete the refrigeration cycle.
【００１３】図２は、冷房運転におけるモリエル線図を
示している。点Ｐから点Ｑは圧縮機１による圧縮過程、
点Ｑから点Ｒは室外熱交換器５での凝縮過程、点Ｒから
点Ｓはメイン電子膨脹弁７による膨張過程、点Ｓから点
Ｐは室内熱交換器９での蒸発過程である。FIG. 2 shows a Mollier diagram in the cooling operation. From point P to point Q, the compression process by the compressor 1,
Points Q to R are condensation processes in the outdoor heat exchanger 5, points R to S are expansion processes by the main electronic expansion valve 7, and points S to P are evaporation processes in the indoor heat exchanger 9.
【００１４】上記室内熱交換器９における蒸発過程で
は、第１熱交換器９ａと第２熱交換器９ｂとの間のサブ
電子膨張弁１３による膨張過程Ｔ1 →Ｔ2 が存在し、第
１熱交換器９ａでの蒸発過程はＳ→Ｔ1 、第２熱交換器
９ｂでの蒸発過程はＴ2 →Ｐであり、第１熱交換器９ａ
の蒸発温度が第２熱交換器９ｂの蒸発温度より高いもの
となる。In the evaporation process in the indoor heat exchanger 9, there is an expansion process T 1 → T 2 by the sub electronic expansion valve 13 between the first heat exchanger 9a and the second heat exchanger 9b. The evaporation process in the heat exchanger 9a is S → T 1 , and the evaporation process in the second heat exchanger 9b is T 2 → P.
Will be higher than the evaporation temperature of the second heat exchanger 9b.
【００１５】このため、第１送風ファン１５ａにより、
蒸発温度の高い第１熱交換器９ａを経て室内ユニット１
１に流入した室内空気は、下部側の第１吹出口１７から
室内に吹出す一方、第２送風ファン１５ｂにより、蒸発
温度の低い第２熱交換器９ｂを経て室内ユニット１１に
流入した室内空気は、上部側の第２吹出口１９から室内
に吹出す。第１吹出口１７から室内に吹出す空気の温度
が、第２吹出口１９から室内に吹出す空気の温度より高
いので、室内ユニット１１を室内の中央部分より下方に
設置した場合でも、足元が冷え過ぎるようなことは回避
される。例えば、室内ユニット１１における吸込み空気
温度が２５℃のとき、第１吹出口１７からの吹出し空気
温度を２０℃、第２吹出口１９からの吹出し空気温度を
１０℃とすると、床面近くの足元の冷やし過ぎを防止で
きる上、室内上部の冷気の床面側への下降を抑えること
ができ、室内空間温度をほぼ均一に保つことが可能とな
り、冷房時での快適性が向上する。Therefore, by the first blower fan 15a,
The indoor unit 1 is passed through the first heat exchanger 9a having a high evaporation temperature.
The indoor air flowing into No. 1 is blown into the room from the first outlet 17 on the lower side, while the indoor air having flowed into the indoor unit 11 via the second heat exchanger 9b having a low evaporation temperature by the second blower fan 15b. Blows out into the room from the second outlet 19 on the upper side. Since the temperature of the air blown into the room from the first outlet 17 is higher than the temperature of the air blown into the room from the second outlet 19, even if the indoor unit 11 is installed below the central portion of the room, Things that are too cold are avoided. For example, when the intake air temperature in the indoor unit 11 is 25 ° C., the temperature of air blown out from the first outlet 17 is 20 ° C., and the temperature of air blown out from the second outlet 19 is 10 ° C. In addition to preventing overcooling of the room, it is possible to prevent the cool air in the upper part of the room from descending to the floor surface side, and it is possible to keep the room space temperature almost uniform and improve comfort during cooling.
【００１６】なお、サブ電子膨張弁１３による室内熱交
換器９（９ａ，９ｂ）での二蒸発温度制御は、冷房時で
の快適性向上を主体とした制御であり、冷房の運転条件
によっては、サブ電子膨張弁１３の絞りを全開とした通
常の冷房運転も可能である。The two-evaporation temperature control in the indoor heat exchanger 9 (9a, 9b) by the sub electronic expansion valve 13 is a control mainly for improving comfort during cooling, and may depend on operating conditions of cooling. A normal cooling operation in which the throttle of the sub electronic expansion valve 13 is fully opened is also possible.
【００１７】除湿運転時には、圧縮機１から吐出した高
温、高圧のガス冷媒は、四方弁３を経て、室外熱交換器
５および全開のメイン電子膨張弁７を通過する。この場
合、室外熱交換器５での凝縮熱量は、室外ファン１１な
どで制御される。室外熱交換器５での凝縮過程は、図３
のモリエル線図では点Ｑから点Ｕである。室外熱交換器
５に流入した冷媒は、室内ユニット１１における第１熱
交換器９ａで凝縮され、サブ電子膨張弁１３で絞られた
後、第２熱交換器９ｂで蒸発する。第１熱交換器９ａで
の凝縮過程は、図３の点Ｕから点Ｒであり、第２熱交換
器９ｂでの蒸発過程は、図３の点Ｓから点Ｐである。こ
のため、室内ユニット１１での吹出空気の温湿度は、室
外熱交換器５および第１熱交換器９ａでの各凝縮熱量、
第２熱交換器９ｂでの蒸発熱量で決定される。低温・低
圧となって室内ユニット１１を出た冷媒は、圧縮機１で
高温・高圧ガスに圧縮されて冷凍サイクルが一巡する。During the dehumidifying operation, the high-temperature, high-pressure gas refrigerant discharged from the compressor 1 passes through the four-way valve 3, the outdoor heat exchanger 5 and the fully opened main electronic expansion valve 7. In this case, the amount of heat of condensation in the outdoor heat exchanger 5 is controlled by the outdoor fan 11 or the like. The condensation process in the outdoor heat exchanger 5 is shown in FIG.
In the Mollier diagram of, the points are from Q to U. The refrigerant flowing into the outdoor heat exchanger 5 is condensed in the first heat exchanger 9a in the indoor unit 11, narrowed down by the sub electronic expansion valve 13, and then evaporated in the second heat exchanger 9b. The condensation process in the first heat exchanger 9a is from point U to point R in FIG. 3, and the evaporation process in the second heat exchanger 9b is from point S to point P in FIG. Therefore, the temperature and humidity of the blown air in the indoor unit 11 are equal to the heat of condensation of each of the outdoor heat exchanger 5 and the first heat exchanger 9a,
It is determined by the amount of heat of evaporation in the second heat exchanger 9b. The refrigerant that has come out of the indoor unit 11 at low temperature and low pressure is compressed into high temperature and high pressure gas by the compressor 1, and the refrigeration cycle goes around once.
【００１８】この除湿運転においても、第１送風ファン
１５ａにより、凝縮器となる第１熱交換器９ａを経て室
内ユニット１１に流入した室内空気は、下部側の第１吹
出口１７から室内に吹出す一方、第２送風ファン１５ｂ
により、蒸発器となる第２熱交換器９ｂを経て室内ユニ
ット１１に流入した室内空気は、上部側の第２吹出口１
９から室内に吹出す。第１吹出口１７から室内に吹出す
空気の温度は、第２吹出口１９から室内に吹出す空気の
温度より高いので、室内ユニット１１を室内の中央部分
より下方に設置した場合でも、足元が冷え過ぎるような
ことは回避される。例えば、室内ユニット１１における
吸込み空気温度が２０℃のとき、第１吹出口１７からの
吹出し空気温度を２５℃、第２吹出口１９からの吹出し
空気温度を１５℃とすることで、冷気の下降を抑え、除
湿運転時にも頭寒足熱状態で快適な空調空間が実現でき
る。Also in this dehumidifying operation, the indoor air that has flowed into the indoor unit 11 via the first heat exchanger 9a serving as a condenser is blown into the room from the lower first blow-out port 17 by the first blower fan 15a. Meanwhile, the second blower fan 15b
As a result, the indoor air that has flowed into the indoor unit 11 via the second heat exchanger 9b, which serves as an evaporator, is
Blow out from 9 to the room. Since the temperature of the air blown into the room from the first outlet 17 is higher than the temperature of the air blown into the room from the second outlet 19, even if the indoor unit 11 is installed below the central portion of the room, Things that are too cold are avoided. For example, when the intake air temperature in the indoor unit 11 is 20 ° C., the temperature of the air blown out from the first outlet 17 is set to 25 ° C., and the temperature of the air blown out from the second outlet 19 is set to 15 ° C. It is possible to realize a comfortable air-conditioned space in a hot and cold condition during dehumidification operation.
【００１９】図４は、室内ユニット１１における室内熱
交換器９の他の例を示している。室内熱交換器９におけ
る第１熱交換器９ａおよび第２熱交換器９ｂともに、室
内ユニット１１における吸込口側（図中で左側）が凸
で、第１，第２送風ファン１５ａ，１５ｂ側が凹となる
ように、円弧状に屈曲形成されている。その他の構成
は、前記図１の実施例と同様である。第１，第２各熱交
換器９ａ，９ｂを円弧状とすることで、図１に示した平
板タイプに比べて、同一筐体寸法に対する熱交換面積が
大きくなり、かつ吸い込み空気が、熱交換面積大によっ
てスムーズに通過しやすいため、熱交換性能が向上す
る。これにより、冷・暖房運転時での起動から定常運転
までの運転時間の短縮化、これに伴う省電力化が達成さ
れる。FIG. 4 shows another example of the indoor heat exchanger 9 in the indoor unit 11. In both the first heat exchanger 9a and the second heat exchanger 9b in the indoor heat exchanger 9, the suction port side (left side in the figure) of the indoor unit 11 is convex and the first and second blower fans 15a, 15b are concave. Is formed in an arc shape. Other configurations are similar to those of the embodiment shown in FIG. By making each of the first and second heat exchangers 9a, 9b into an arc shape, the heat exchange area for the same housing size becomes larger than that of the flat plate type shown in FIG. 1, and the suction air exchanges heat. The large area facilitates smooth passage, improving heat exchange performance. As a result, it is possible to shorten the operation time from the start-up to the steady operation during the cooling / heating operation, and to achieve power saving accordingly.
【００２０】なお、第１，第２熱交換器９ａ，９ｂは、
上記例における円弧状に代えて、くの字状など、多段曲
げ形状としても構わない。The first and second heat exchangers 9a and 9b are
Instead of the arc shape in the above example, a multi-step bent shape such as a dogleg shape may be used.
【００２１】図５は、室内ユニット１１における室内熱
交換器９のさらに他の例を示している。室内熱交換器９
における第１側熱交換器９ａを図１のものと同様な平板
タイプとし、第２熱交換器９ｂを図４のものと同様な円
弧タイプとしている。その他の構成は、前記図１の実施
例と同様である。この場合には、第２熱交換器９ｂにつ
いては、前記図４の例と同様に、平板タイプに比べて、
熱交換性能が向上し、一方第１熱交換器９ａは平板状で
あることから、冷房能力を低下させるために第１送風フ
ァン１５ａを停止させるような際には、第２送風ファン
１５ｂによる吸込み空気が第１熱交換器９ａを通過しや
すくなって、第１熱交換器９ａを有効に利用でき、蒸発
温度の低下を避けるとともに、第１熱交換器９ａの凍結
防止がなされる。FIG. 5 shows still another example of the indoor heat exchanger 9 in the indoor unit 11. Indoor heat exchanger 9
The first side heat exchanger 9a in Fig. 4 is a flat plate type similar to that in Fig. 1, and the second heat exchanger 9b is an arc type similar to that in Fig. 4. Other configurations are similar to those of the embodiment shown in FIG. In this case, regarding the second heat exchanger 9b, as in the example of FIG.
Since the heat exchange performance is improved and the first heat exchanger 9a has a flat plate shape, when the first blower fan 15a is stopped in order to reduce the cooling capacity, suction by the second blower fan 15b is performed. Air easily passes through the first heat exchanger 9a, the first heat exchanger 9a can be effectively used, a decrease in evaporation temperature is avoided, and the first heat exchanger 9a is prevented from freezing.
【００２２】また、図１の空気調和装置において、室内
ユニット１１を上下を反対にして室内に設置すること
で、第１熱交換器９ａが上部側に、第２熱交換器９ｂが
下部側にそれぞれ位置することになり、この状態で、暖
房運転時には圧縮機１から吐出された高温・高圧のガス
冷媒が、四方弁３を経て下部側となる第２熱交換器９ｂ
から上部側となる下側熱交換器９ａに向けて流れること
になる。In the air conditioner of FIG. 1, the indoor unit 11 is installed upside down so that the first heat exchanger 9a is on the upper side and the second heat exchanger 9b is on the lower side. In this state, the high-temperature, high-pressure gas refrigerant discharged from the compressor 1 during the heating operation passes through the four-way valve 3 and becomes the lower side second heat exchanger 9b.
Flow toward the lower heat exchanger 9a on the upper side.
【００２３】この場合には、サブ電子膨張弁１３による
絞りによって下部側に位置する第２熱交換器９ｂでの凝
縮温度が高く、上部側に位置する第１熱交換器９ａでの
凝縮温度が低くなる、いわゆる二凝縮温度制御が可能と
なる。これにより、下部側に位置することになる第２吹
出口１９からの吹出し空気の温度が高く、上部側に位置
することになる第１吹出口１７から吹出し温度が低くな
り、頭寒足熱の快適な暖房運転ができる。In this case, the condensing temperature in the second heat exchanger 9b located on the lower side is high and the condensing temperature in the first heat exchanger 9a located on the upper side is high due to the restriction by the sub electronic expansion valve 13. It becomes possible to control the so-called second condensing temperature which becomes low. As a result, the temperature of the air blown out from the second air outlet 19 which is located on the lower side is high, and the temperature of the air blown from the first air outlet 17 which is located on the upper side is lowered, and comfortable heating of head cold foot heat is achieved. Can drive.
【００２４】図６は、冷房運転および暖房運転のいずれ
の運転時においても、下部側に位置する第１熱交換器９
ａから上部側に位置する第２熱交換器９ｂに向けて冷媒
を流すように構成した冷凍サイクルを示す。この冷凍サ
イクルは、前記図１のものに対し、第２熱交換器９ｂと
四方弁３との間および、第１熱交換器９ａとメイン電子
膨張弁７との間に、二方弁２３および二方弁２５をそれ
ぞれ設け、二方弁２３と四方弁３との間と、二方弁２５
と第１熱交換器９ａとの間とを、バイパス管２７で接続
するとともに、二方弁２３と第２熱交換器９ｂとの間
と、二方弁２５とメイン電子膨張弁７との間とを、バイ
パス管２９で接続し、バイパス配管２７には二方弁３１
とバイパス管２７での矢印Ａ方向の流れのみを許容する
逆止弁３３とを、バイパス配管２９には二方弁３５とバ
イパス管２９での矢印Ｂ方向の流れのみを許容する逆止
弁３７をそれぞれ設ける。FIG. 6 shows the first heat exchanger 9 located on the lower side during both the cooling operation and the heating operation.
The refrigerating cycle constituted so that a refrigerant may be made to flow from a to the 2nd heat exchanger 9b located in the upper part is shown. This refrigerating cycle is different from the one shown in FIG. 1 in that the two-way valve 23 and the two-way valve 23 are provided between the second heat exchanger 9b and the four-way valve 3 and between the first heat exchanger 9a and the main electronic expansion valve 7. Two-way valve 25 is provided, and two-way valve 23 and four-way valve 3 and two-way valve 25 are provided.
And the first heat exchanger 9a are connected by a bypass pipe 27, and the two-way valve 23 and the second heat exchanger 9b are connected and the two-way valve 25 and the main electronic expansion valve 7 are connected. Are connected by a bypass pipe 29, and a two-way valve 31 is connected to the bypass pipe 27.
And a check valve 33 that allows only the flow in the direction of arrow A in the bypass pipe 27, and a two-way valve 35 in the bypass pipe 29 and a check valve 37 that allows only the flow in the direction of arrow B in the bypass pipe 29. Are provided respectively.
【００２５】冷房および除湿運転時には、二方弁２３，
２５を開き、二方弁３１，３５を閉じる。これにより、
圧縮機１から出た冷媒は、破線矢印で示すように、四方
弁３を経て室外熱交換器５→メイン電子膨張弁７→二方
弁２５→第１熱交換器９ａ→サブ電子膨張弁１３→第２
熱交換器９ｂ→四方弁３→圧縮機１の順に流れる。During cooling and dehumidifying operation, the two-way valve 23,
25 is opened and the two-way valves 31 and 35 are closed. This allows
The refrigerant discharged from the compressor 1 passes through the four-way valve 3 through the four-way valve 3, the outdoor heat exchanger 5, the main electronic expansion valve 7, the two-way valve 25, the first heat exchanger 9a, and the sub electronic expansion valve 13 as shown in FIG. → second
Flows in the order of heat exchanger 9b → four-way valve 3 → compressor 1.
【００２６】一方、暖房運転時には、二方弁３１，３５
を開き、二方弁２３，２５を閉じる。これにより、圧縮
機１から出た冷媒は、実線矢印で示すように、四方弁３
を経てバイパス管２７→第１熱交換器９ａ→サブ電子膨
張弁１３→第２熱交換器９ｂ→バイパス管２９→メイン
電子膨張弁７→室外熱交換器５→四方弁３→圧縮機１の
順に流れる。On the other hand, during heating operation, the two-way valves 31, 35
Open and close the two-way valves 23, 25. As a result, the refrigerant discharged from the compressor 1 is discharged from the four-way valve 3 as shown by the solid arrow.
Via bypass pipe 27 → first heat exchanger 9a → sub electronic expansion valve 13 → second heat exchanger 9b → bypass pipe 29 → main electronic expansion valve 7 → outdoor heat exchanger 5 → four-way valve 3 → compressor 1 Flow in order.
【００２７】上記図６の空気調和装置によれば、冷房お
よび除湿運転時と暖房運転時において、室内ユニット１
１内にて冷媒を、下部側の第１熱交換器９ａからサブ電
子膨張弁１３を経て上部側の第２熱交換器９ｂに流すこ
とができ、両運転時にて頭寒足熱状態で、快適な空調空
間が得られることになる。According to the air conditioner of FIG. 6, the indoor unit 1 is operated during the cooling and dehumidifying operations and during the heating operation.
The refrigerant can be made to flow from the first heat exchanger 9a on the lower side to the second heat exchanger 9b on the upper side via the sub-electronic expansion valve 13 in the inside of 1, so that a comfortable air conditioning in a head cold foot heat state during both operations. Space will be obtained.
【００２８】[0028]
【発明の効果】以上説明してきたように、この発明によ
れば、室内熱交換器を、室内ユニットに配置される状態
にて下部側の第１熱交換器と上部側の第２熱交換器とに
二分割するとともに、これら両熱交換器間にサブ絞り機
構を設け、冷房時におけるサイクル内の冷媒を第１熱交
換器から第２熱交換器に向けて流れるように構成し、第
１熱交換器での蒸発温度を第２熱交換器の同温度より高
くするようにしたため、第１熱交換器を通過して下部側
の第１吹出口から吹出される空気の温度が、第２熱交換
器を通過して上部側の第２吹出口から吹出される空気の
温度より高いものとなり、足元の冷やし過ぎを防止でき
るとともに、室内上部の冷気の下降を抑えることができ
て室内空間温度を均一に保つことができる。As described above, according to the present invention, the indoor heat exchanger is arranged in the indoor unit and the first heat exchanger on the lower side and the second heat exchanger on the upper side are arranged. And a sub-throttle mechanism are provided between these heat exchangers so that the refrigerant in the cycle during cooling flows from the first heat exchanger toward the second heat exchanger. Since the evaporation temperature in the heat exchanger is set higher than the same temperature in the second heat exchanger, the temperature of the air that passes through the first heat exchanger and is blown out from the first outlet on the lower side is the second temperature. The temperature of the air that passes through the heat exchanger and is blown out from the second outlet on the upper side becomes higher than that of the air, which prevents overcooling of the feet and suppresses the lowering of the cool air in the upper part of the room, thereby reducing the indoor space temperature. Can be kept uniform.
【図１】この発明の一実施例を示す空気調和装置に使用
される冷凍サイクル構成図である。FIG. 1 is a configuration diagram of a refrigeration cycle used in an air conditioner showing an embodiment of the present invention.
【図２】図１の空気調和装置での冷房運転におけるモリ
エル線図である。FIG. 2 is a Mollier diagram during cooling operation in the air conditioner of FIG.
【図３】図１の空気調和装置での除湿運転におけるモリ
エル線図である。FIG. 3 is a Mollier diagram in dehumidifying operation in the air conditioner of FIG.
【図４】図１の空気調和装置における室内熱交換器の他
の例を示す室内ユニットの断面図である。4 is a cross-sectional view of an indoor unit showing another example of the indoor heat exchanger in the air conditioner of FIG.
【図５】図１の空気調和装置における室内熱交換器のさ
らに他の例を示す室内ユニットの断面図である。5 is a sectional view of an indoor unit showing still another example of the indoor heat exchanger in the air conditioner of FIG.
【図６】この発明の他の実施例を示す冷凍サイクル構成
図である。FIG. 6 is a refrigeration cycle configuration diagram showing another embodiment of the present invention.
【符号の説明】 １ 圧縮機 ５ 室外熱交換器 ７ メイン電子膨張弁（絞り機構） ９ 室内熱交換器 ９ａ 第１熱交換器 ９ｂ 第２熱交換器 １１ 室内ユニット １３ サブ電子膨張弁（絞り機構） １７ 第１吹出口 １９ 第２吹出口[Explanation of reference numerals] 1 compressor 5 outdoor heat exchanger 7 main electronic expansion valve (throttle mechanism) 9 indoor heat exchanger 9a first heat exchanger 9b second heat exchanger 11 indoor unit 13 sub electronic expansion valve (throttle mechanism) ) 17 First outlet 19 Second outlet
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三島 毅睦 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝住空間システム技術研究所内 (72)発明者 空井 愛 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝住空間システム技術研究所内 (72)発明者 高橋 幸伸 神奈川県横浜市磯子区新杉田町８番地 株 式会社東芝住空間システム技術研究所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Mishima 8 Shinsita-cho, Isogo-ku, Yokohama-shi, Kanagawa Kanagawa Prefecture, Living Space Systems Engineering Laboratory (72) Inventor Arai Kurai Shinsugita-cho, Isogo-ku, Yokohama, Kanagawa No. 8 Inside the Toshiba Housing and Space Systems Engineering Laboratory (72) Inventor Yukinobu Takahashi No. 8 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa Inside the Toshiba Housing and Space Systems Engineering Laboratory
Claims (6)
室内熱交換器がそれぞれ配管接続された冷凍サイクルを
備えた空気調和装置において、前記室内熱交換器を、室
内ユニットに配置される状態にて下部側の第１熱交換器
と上部側の第２熱交換器とに二分割するとともに、これ
ら第１，第２両熱交換器相互間に絞り機構を設け、冷房
運転時に冷凍サイクルを循環する冷媒を前記第１熱交換
器から第２熱交換器に向けて流れるよう構成し、前記第
１熱交換器を通過した熱交換後の室内空気を室内に吹出
す第１吹出口を、第２熱交換器を通過した熱交換後の室
内空気を室内に吹出す第２吹出口より、室内ユニットに
おける下部側に設けたことを特徴とする空気調和装置。1. An air conditioner having a refrigeration cycle in which a compressor, an outdoor heat exchanger, a throttle mechanism and an indoor heat exchanger are connected by piping, and the indoor heat exchanger is arranged in an indoor unit. Is divided into a first heat exchanger on the lower side and a second heat exchanger on the upper side, and a throttling mechanism is provided between the first and second heat exchangers to establish a refrigeration cycle during cooling operation. A first outlet that is configured to flow the circulating refrigerant from the first heat exchanger toward the second heat exchanger, and blows out indoor air after heat exchange that has passed through the first heat exchanger into the room, An air conditioner provided on the lower side of an indoor unit from a second outlet that blows out indoor air after heat exchange that has passed through a second heat exchanger into the room.
方向の中央部分より下方に配置したことを特徴とする請
求項１記載の空気調和装置。2. The air conditioner according to claim 1, wherein the indoor unit is arranged below a central portion of the indoor space in the vertical direction.
れについて、室内空気を各熱交換器を通過して各吹出口
から室内に吹出すための送風機を設けことを特徴とする
請求項１記載の空気調和装置。3. The first heat exchanger and the second heat exchanger are each provided with a blower for passing indoor air through each heat exchanger and blowing out indoor air from each air outlet. 1. The air conditioner according to 1.
入側が凸となるように屈曲形成されていることを特徴と
する請求項１記載の空気調和装置。4. The air conditioner according to claim 1, wherein each of the first and second heat exchangers is bent so that the inflow side of the indoor air is convex.
となるように屈曲形成し、第１熱交換器を平板状に形成
したことを特徴とする請求項３記載の空気調和装置。5. The air conditioner according to claim 3, wherein the second heat exchanger is bent so that the inflow side of the indoor air is convex, and the first heat exchanger is formed in a flat plate shape. .
室内熱交換器がそれぞれ配管接続された冷凍サイクルを
備えた空気調和装置において、前記室内熱交換器を、室
内ユニットに配置される状態にて下部側の第１熱交換器
と上部側の第２熱交換器とに二分割するとともに、これ
ら第１，第２両熱交換器相互間に絞り機構を設け、冷房
および暖房の両運転時に冷凍サイクルを循環する冷媒を
前記第１熱交換器から第２熱交換器に向けて流れるよう
構成し、前記第１熱交換器を通過した熱交換後の室内空
気を室内に吹出す第１吹出口を、第２熱交換器を通過し
た熱交換後の室内空気を室内に吹出す第２吹出口より、
室内ユニットにおける下部側に設けたことを特徴とする
空気調和装置。6. An air conditioner having a refrigeration cycle in which a compressor, an outdoor heat exchanger, a throttle mechanism and an indoor heat exchanger are connected by piping, and the indoor heat exchanger is arranged in an indoor unit. Is divided into a first heat exchanger on the lower side and a second heat exchanger on the upper side, and a throttle mechanism is provided between the first and second heat exchangers to perform both cooling and heating operations. A refrigerant that circulates in a refrigerating cycle sometimes flows from the first heat exchanger toward a second heat exchanger, and blows out indoor air after heat exchange that has passed through the first heat exchanger into the room. From the second outlet that blows out the indoor air after heat exchange that has passed through the second heat exchanger into the room,
An air conditioner provided on the lower side of an indoor unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23930394A JP3283706B2 (en) | 1994-10-03 | 1994-10-03 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23930394A JP3283706B2 (en) | 1994-10-03 | 1994-10-03 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08105652A true JPH08105652A (en) | 1996-04-23 |
| JP3283706B2 JP3283706B2 (en) | 2002-05-20 |
Family
ID=17042723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23930394A Expired - Fee Related JP3283706B2 (en) | 1994-10-03 | 1994-10-03 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3283706B2 (en) |
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| JPH1134640A (en) * | 1997-07-24 | 1999-02-09 | Denso Corp | Vehicle air conditioner |
| WO2002055937A1 (en) * | 2001-01-15 | 2002-07-18 | Daikin Industries, Ltd. | Indoor unit for air conditioner |
| JP2007198641A (en) * | 2006-01-25 | 2007-08-09 | Daikin Ind Ltd | Floor-mounted air conditioning indoor unit |
| JP2009052880A (en) * | 2004-03-29 | 2009-03-12 | Mitsubishi Electric Corp | Heat pump water heater |
| JP2009234387A (en) * | 2008-03-26 | 2009-10-15 | Calsonic Kansei Corp | Air conditioner |
| CN103574863A (en) * | 2012-07-25 | 2014-02-12 | 珠海格力电器股份有限公司 | Indoor unit of air conditioner |
| CN104748234A (en) * | 2015-03-30 | 2015-07-01 | 广东美的制冷设备有限公司 | Air-conditioner |
| EP1673580B1 (en) * | 2004-08-16 | 2016-01-06 | Bernd Löffler | Air conditioner for working spaces |
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- 1994-10-03 JP JP23930394A patent/JP3283706B2/en not_active Expired - Fee Related
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