JP4686921B2 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
JP4686921B2
JP4686921B2 JP2001219068A JP2001219068A JP4686921B2 JP 4686921 B2 JP4686921 B2 JP 4686921B2 JP 2001219068 A JP2001219068 A JP 2001219068A JP 2001219068 A JP2001219068 A JP 2001219068A JP 4686921 B2 JP4686921 B2 JP 4686921B2
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Prior art keywords
valve
flow path
refrigerant flow
air conditioner
heat exchanger
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JP2003028529A (en
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弘明 綿貫
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Fujitsu General Ltd
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Fujitsu General Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は空気調和機に係わり、より詳しくは、暖房運転時に室内熱交換器の冷媒流路を、能力重視の前後二列で、且つ上下の２パス運転と、吹出し温度重視の前列一列で、且つ上下の２パス運転に切換えできる冷媒回路に関する。
【０００２】
【従来の技術】
従来の出力が2.2KW クラスの小能力の空気調和機は例えば、図４に示すように、圧縮機１と、四方弁２と、室外熱交換器３と、膨張弁４と、室内熱交換器5'とを順次配管接続してなる冷媒回路を構成し、暖房運転時に圧縮機１より吐出した高温高圧の冷媒ガスは実線矢印で示すように四方弁２を通して室内熱交換器5'に送られ、室内空気との熱交換の後、減圧装置４により減圧液化され、室外熱交換器３で室外空気との熱交換によりガス化され、再度四方弁２を通して圧縮機１の吸入側に戻るようになっている。また、冷房運転時には四方弁２が切換えられることにより、破線矢印で示すように冷媒の流れが変わり、室外熱交換器３と室内熱交換器５の作用が暖房時と逆になる。
【０００３】
図５は室内熱交換器5'の配管接続例を示したもので、この室外熱交換器３は図４に示す室内ファン６の運転に伴って発生する空気流に対し前後二列で、且つ上下の２パス構成となっている。
しかしながら、従来の上記構成では、空気調和機が小能力のため、暖房運転時の室内熱交換器5'の温度が上がらず、吹出し温度が低下している場合が多い。したがって、能力はでているが、体感的に暖かくないという問題があった。
【０００４】
【発明が解決しようとする課題】
本発明は上記問題点に鑑みなされたもので、能力重視の暖房運転は、室内熱交換器の冷媒流路を前後二列で、且つ上下の２パス運転を行い、吹出し温度を重視した暖房運転は、空気流の風上側の前列一列で、且つ上下の２パス運転を行うことにより、暖房の吹出し温度を上げることができ、体感的に暖かさを感じさせることができる空気調和機を提供することを目的としている。
【０００５】
【課題を解決するための手段】
本発明は上記の課題を解決するためになされたもので、圧縮機と、四方弁と、室外熱交換器と、膨張弁と、室内熱交換器とを順次連結し冷媒回路を形成し、前記室内熱交換器の冷媒流路が室内ファンの回転に伴って発生する空気流に対し前後二列に構成され、中央部に２つの入口および２つの出口を備え、冷媒を前記入口側で上下に分流するとともに、前記出口側で合流接続してなる空気調和機において、
前記冷媒流路の前列と後列の上端同士および下端同士をそれぞれ結合する上下二つの結合部を前記室内熱交換器の中間部とし、前記冷媒流路の暖房時の上側入口に第一開閉弁を、下側入口に第二開閉弁を夫々設けるとともに、前記上側中間部と前記第一開閉弁の入口側との間に第三開閉弁を、前記下側中間部と前記第二開閉弁の入口側との間に第四開閉弁を夫々設け、暖房運転時に前記冷媒流路を前後二列で、且つ上下の２パス、もしくは前列一列で、且つ上下の２パスの何れかに選択切換えできるように、前記各開閉弁の開閉を制御する構成となっている。
【０００６】
また、前記冷媒流路を前後二列で、且つ上下の２パスを選択する時、前記第一開閉弁および前記第二開閉弁を開き、前記第三開閉弁および前記第四開閉弁を閉じ、前記冷媒流路を前列一列で、且つ上下の２パスを選択する時、前記第一開閉弁および前記第二開閉弁を閉じ、前記第三開閉弁および前記第四開閉弁を開くよう制御する構成となっている。
【０００７】
また、前記冷媒流路の暖房時の入口を後列に、出口を前列に設けた構成となっている。
【０００８】
また、前記冷媒流路の暖房時の入口および出口を、前記冷媒流路の長さが上下均等となる中段に設けた構成となっている。
【０００９】
また、前記第三開閉弁を前記上側中間部の近傍に設け、前記第四開閉弁を前記下側中間部の近傍に設けた構成となっている。
【００１０】
また、前記各開閉弁に電磁弁を用いた構成となっている。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を図１〜図３に基づいて説明する。
図１は空気調和機の冷媒回路を示したもので、１は圧縮機、２は圧縮機１より吐出する冷媒の流れを暖房運転、冷房運転等に合わせて切換える四方弁、３は室外熱交換器、４は膨張弁、５は室内熱交換器で、これらは順次配管接続され、冷媒回路を形成し、前記室内熱交換器５の冷媒流路が室内ファン６の回転に伴って発生する空気流に対し前後二列に構成され、中央部に２つの入口および２つの出口を備え、冷媒を前記入口側で上下に分流するとともに、前記出口側で合流接続する構成となっている。
【００１２】
前記冷媒流路の前列と後列の上端同士および下端同士をそれぞれ結合する上下二つの結合部を前記室内熱交換器５の中間部5a,5b とし、前記冷媒流路の暖房時の上側入口に第一開閉弁７を、下側入口に第二開閉弁８を夫々設けるとともに、前記上側中間部5aと前記第一開閉弁７の入口側との間に第三開閉弁９を、前記下側中間部5bと前記第二開閉弁８の入口側との間に第四開閉弁10を夫々設け、暖房運転時に前記冷媒流路を前後二列で、且つ上下の２パス、もしくは前列一列で、且つ上下の２パスの何れかに選択切換えできるように、前記各開閉弁７，８，９，10の開閉を制御する構成となっている。
【００１３】
上記構成において、暖房運転時の冷媒は実線矢印で示すように循環し、圧縮機１により高温高圧に圧縮された冷媒ガスは、四方弁２を通り、室内熱交換器５を流れる間に室内ファン６により室内空気と熱交換され、膨張弁４により減圧液化され、室外熱交換器３を流れる間に室外ファンにより室外空気と熱交換されてガス化し、再度四方弁２を経て圧縮機１の吸入側に戻る。また、冷房運転時および室外熱交換器３の着霜を除去する除霜運転時には四方弁２が切換えられることにより、破線矢印で示すように冷媒の流れが変わり、室外熱交換器３と室内熱交換器５の作用が逆になる。
【００１４】
図２に示すように、本実施例においては、リモコンに暖房運転時に前記冷媒流路のパス数を切換える切換ボタンを設け、一方は能力重視の前後二列で、且つ上下の２パス運転、他方は吹出温度を重視した前列（空気流の風上側）一列で、且つ上下の２パス運転に切換えるものである。図２に示すように、能力重視の暖房運転は、前記第一開閉弁７と第二開閉弁８を開き、前記第三開閉弁９と第四開閉弁10を閉じ、前後二列で、且つ上下の２パス運転を行う。また、吹出し温度を重視した暖房運転は、前記第一開閉弁７と第二開閉弁８を閉じ、前記第三開閉弁９と第四開閉弁10をを開き、冷媒の流れを前記上側中間部5aと前記下側中間部5bとから出口に流す前列一列で、且つ上下の２パス運転を行う。これにより、例えば出力が2.2KW クラスの小能力の空気調和機においても、空気流の風上側の１パス運転とすることにより、暖房の吹出し温度を上げることができ、体感的に暖かさを感じさせることができる。
尚、冷房運転は、上記の能力重視の前後二列で、且つ上下の２パス運転と同じで冷媒の流れ方向が変わるだけである。
【００１５】
図３は室内熱交換器５の配管接続構成を示したものである。
室内ファン６の運転によって発生する空気流の風上側（室内ユニットの吸込口）に対し前後二列に構成されており、これら前列と後列の冷媒流路の上端同士および下端同士をそれぞれ結合する上下二つの結合部がこの室内熱交換器５の中間部5a、5bとなっており、前記冷媒流路の上側入口に第一開閉弁７を、下側入口に第二開閉弁８を夫々設けるとともに、前記上側中間部5aと前記第一開閉弁７の入口側との間に第三開閉弁９を、前記下側中間部5bと前記第二開閉弁８の入口側との間に第四開閉弁10を夫々設けられている。
また、冷房運転時、暖房運転時等に冷媒が出入りする入口と出口は、冷媒流路の長さが上下均等となる前列および後列の中段に設けられている。
【００１６】
また、前記開閉弁に電磁弁を用い、前記第三開閉弁９を前記上側中間部5aの近傍に設け、前記第四開閉弁10を前記下側中間部5bの近傍に設けた構成とすることにより、前記第三開閉弁９および第四開閉弁10閉じたとき、中間部と開閉弁との間の配管に冷媒の溜まりがなく効率のよい運転ができる。
【００１７】
上記に説明した構成において、能力重視の暖房運転は、前記第一開閉弁７と第二開閉弁８を開き、前記第三開閉弁９と第四開閉弁10を閉じ、前後二列で、且つ上下の２パス運転を行い、吹出し温度を重視した暖房運転は、前記第一開閉弁７と第二開閉弁８を閉じ、前記第三開閉弁９と第四開閉弁10を開き、冷媒の流れを前記上側中間部5aと前記下側中間部5bとから出口に流す前列一列で、且つ上下の２パス運転を行ことにより、小能力の空気調和機においても、空気流の風上側の２パス運転とすることで、暖房の吹出し温度を上げることができ、体感的に暖かさを感じさせることができる空気調和機となる。
【００１８】
【発明の効果】
以上説明したように、能力重視の暖房運転は、室内熱交換器の前後二列で、且つ上下の２パス運転を行い、吹出し温度を重視した暖房運転は、冷媒の流れを上側中間部と下側中間部とから出口に流す、空気流の風上側の前列一列で、且つ上下の２パス運転を行ことにより、小能力の空気調和機においても、暖房の吹出し温度を上げることができ、体感的に暖かさを感じさせることができる空気調和機となる。
【図面の簡単な説明】
【図１】本発明による空気調和機の冷媒回路図である。
【図２】本発明による各開閉弁の操作関係を示す図である。
【図３】本発明による室内熱交換器の配管接続構成図である。
【図４】従来例を示す空気調和機の冷媒回路図である。
【図５】従来例を示す室内熱交換器の配管接続構成図である。
【符号の説明】
１ 圧縮機
２ 四方弁
３ 室外熱交換器
４ 膨張弁
５ 室内熱交換器
5a,5 中間部
６ 室内ファン
７ 第一開閉弁
８ 第二開閉弁
９ 第三開閉弁
10 第四開閉弁[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air conditioner, and more specifically, in the heating operation, the refrigerant flow path of the indoor heat exchanger is arranged in two rows before and after performance, and two rows of upper and lower operations and one row in front row that emphasizes the blowing temperature, In addition, the present invention relates to a refrigerant circuit that can be switched to upper and lower two-pass operation.
[0002]
[Prior art]
A conventional air conditioner with a small output of 2.2 KW class is, for example, as shown in FIG. 4, a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an expansion valve 4, and an indoor heat exchanger. The refrigerant circuit is constructed by sequentially connecting 5 'to the pipe, and the high-temperature and high-pressure refrigerant gas discharged from the compressor 1 during heating operation is sent to the indoor heat exchanger 5' through the four-way valve 2 as shown by the solid arrow. After the heat exchange with the room air, the pressure is reduced and liquefied by the pressure reducing device 4, gasified by the heat exchange with the outdoor air in the outdoor heat exchanger 3, and again returns to the suction side of the compressor 1 through the four-way valve 2. It has become. Further, when the four-way valve 2 is switched during the cooling operation, the flow of the refrigerant changes as indicated by the broken line arrow, and the actions of the outdoor heat exchanger 3 and the indoor heat exchanger 5 are reversed from those during heating.
[0003]
FIG. 5 shows an example of piping connection of the indoor heat exchanger 5 ′. The outdoor heat exchanger 3 is arranged in two rows in front and rear with respect to the air flow generated by the operation of the indoor fan 6 shown in FIG. The upper and lower two-pass configuration.
However, in the conventional configuration described above, since the air conditioner has a small capacity, the temperature of the indoor heat exchanger 5 ′ during heating operation does not increase, and the blowing temperature often decreases. Therefore, although there was ability, there was a problem that it was not warm physically.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above-mentioned problems. In the heating operation with an emphasis on capacity, the refrigerant flow path of the indoor heat exchanger is operated in two rows in the front and rear, and the upper and lower two-pass operation, and the heating operation is focused on the blowing temperature. Provides an air conditioner that can raise the temperature of the heating and raise the warmth in a bodily manner by performing the upper and lower two-pass operation in the front row on the windward side of the airflow. The purpose is that.
[0005]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problem, and a compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are sequentially connected to form a refrigerant circuit, The refrigerant flow path of the indoor heat exchanger is configured in two front and rear rows with respect to the air flow generated as the indoor fan rotates, and has two inlets and two outlets in the center, and the refrigerant is moved up and down on the inlet side. In the air conditioner that is diverted and joined at the outlet side,
The upper and lower two coupling portions for coupling the upper end and the lower end of the front and rear rows of the refrigerant flow path are intermediate portions of the indoor heat exchanger, and a first opening / closing valve is provided at the upper inlet during heating of the refrigerant flow path. A second on-off valve is provided at the lower inlet, a third on-off valve is provided between the upper intermediate portion and the inlet side of the first on-off valve, and an inlet of the lower intermediate portion and the second on-off valve is provided. A fourth on-off valve is provided between each side of the refrigerant flow path so that the refrigerant flow path can be selectively switched between the front and rear two rows and the upper and lower two passes or the front row and the upper and lower two passes during heating operation. In addition, it is configured to control the opening and closing of each on-off valve.
[0006]
Further, when the refrigerant flow path is arranged in two rows in the front-rear direction and two upper and lower paths are selected, the first on-off valve and the second on-off valve are opened, the third on-off valve and the fourth on-off valve are closed, A configuration in which the first on-off valve and the second on-off valve are closed and the third on-off valve and the fourth on-off valve are opened when the refrigerant flow path is arranged in a front row and two upper and lower paths are selected. It has become.
[0007]
In addition, the refrigerant flow passage is provided with an inlet for heating in the rear row and an outlet in the front row.
[0008]
In addition, an inlet and an outlet for heating the refrigerant flow path are provided in a middle stage where the length of the refrigerant flow path is equal in the vertical direction.
[0009]
Further, the third on-off valve is provided in the vicinity of the upper intermediate portion, and the fourth on-off valve is provided in the vicinity of the lower intermediate portion.
[0010]
Moreover, it has the structure which used the solenoid valve for each said on-off valve.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 1 shows a refrigerant circuit of an air conditioner, where 1 is a compressor, 2 is a four-way valve that switches the flow of refrigerant discharged from the compressor 1 according to heating operation, cooling operation, etc., 3 is outdoor heat exchange , 4 is an expansion valve, and 5 is an indoor heat exchanger, which are sequentially connected to each other to form a refrigerant circuit, and the refrigerant flow path of the indoor heat exchanger 5 is generated as the indoor fan 6 rotates. It is configured in two front and rear rows with respect to the flow, and has two inlets and two outlets in the center, and the refrigerant is divided up and down on the inlet side and joined and connected on the outlet side.
[0012]
The upper and lower two connecting portions that connect the upper ends and the lower ends of the front and rear rows of the refrigerant flow passages are the intermediate portions 5a and 5b of the indoor heat exchanger 5, and are connected to the upper inlet when the refrigerant flow passage is heated. One open / close valve 7 and a second open / close valve 8 at the lower inlet, respectively, and a third open / close valve 9 between the upper intermediate portion 5a and the inlet side of the first open / close valve 7 A fourth on-off valve 10 is provided between the portion 5b and the inlet side of the second on-off valve 8, and the refrigerant flow path is arranged in two rows in the front and rear, and two upper and lower passes, or one row in the front row during heating operation, and The on / off valves 7, 8, 9, 10 are controlled to be opened / closed so that they can be selectively switched between the upper and lower paths.
[0013]
In the above configuration, the refrigerant during the heating operation circulates as indicated by the solid arrow, and the refrigerant gas compressed to high temperature and high pressure by the compressor 1 passes through the four-way valve 2 and flows through the indoor heat exchanger 5, while the indoor fan 6 is exchanged with the indoor air, is liquefied by the expansion valve 4, is exchanged with the outdoor air by the outdoor fan while flowing through the outdoor heat exchanger 3, is gasified, and is again sucked into the compressor 1 through the four-way valve 2. Return to the side. Further, when the four-way valve 2 is switched during the cooling operation and the defrosting operation for removing the frost formation of the outdoor heat exchanger 3, the flow of the refrigerant is changed as indicated by the broken arrow, and the outdoor heat exchanger 3 and the indoor heat are changed. The action of the exchanger 5 is reversed.
[0014]
As shown in FIG. 2, in this embodiment, the remote control is provided with a switching button for switching the number of paths of the refrigerant flow path during heating operation, one of which is a front and rear two-row operation with emphasis on capacity, and the other is an upper and lower two-pass operation. Is a front-row (upwind side of the airflow) with an emphasis on the blowout temperature, and is switched to upper and lower two-pass operation. As shown in FIG. 2, in the capacity-oriented heating operation, the first on-off valve 7 and the second on-off valve 8 are opened, the third on-off valve 9 and the fourth on-off valve 10 are closed, two rows in front and rear, Perform up and down two-pass operation. Further, in the heating operation with an emphasis on the blowing temperature, the first on-off valve 7 and the second on-off valve 8 are closed, the third on-off valve 9 and the fourth on-off valve 10 are opened, and the refrigerant flow is changed to the upper intermediate portion. The upper and lower two-pass operation is performed in a front row that flows from 5a and the lower intermediate portion 5b to the outlet. As a result, for example, even in a small capacity air conditioner with an output of 2.2 KW class, by using one-pass operation on the windward side of the airflow, the temperature of the heating air can be raised and the warmth can be felt physically. Can be made.
Note that the cooling operation is the same as the two-pass operation in the upper and lower two rows with importance on the above-mentioned capability, and only the refrigerant flow direction is changed.
[0015]
FIG. 3 shows a pipe connection configuration of the indoor heat exchanger 5.
It is configured in two front and rear rows with respect to the windward side of the air flow generated by the operation of the indoor fan 6 (inlet port of the indoor unit), and the upper and lower sides connecting the upper ends and the lower ends of the refrigerant flow paths in the front row and the rear row, respectively. The two connecting portions are intermediate portions 5a and 5b of the indoor heat exchanger 5, and a first opening / closing valve 7 is provided at the upper inlet of the refrigerant flow path, and a second opening / closing valve 8 is provided at the lower inlet. A third on-off valve 9 between the upper intermediate portion 5a and the inlet side of the first on-off valve 7, and a fourth on-off valve between the lower intermediate portion 5b and the inlet side of the second on-off valve 8. Each valve 10 is provided.
In addition, the inlets and outlets through which the refrigerant enters and exits during cooling operation, heating operation, and the like are provided in the middle stage of the front row and the rear row where the lengths of the refrigerant flow paths are equal.
[0016]
Further, an electromagnetic valve is used as the on-off valve, the third on-off valve 9 is provided in the vicinity of the upper intermediate portion 5a, and the fourth on-off valve 10 is provided in the vicinity of the lower intermediate portion 5b. Thus, when the third on-off valve 9 and the fourth on-off valve 10 are closed, there is no accumulation of refrigerant in the pipe between the intermediate portion and the on-off valve, and an efficient operation can be performed.
[0017]
In the configuration described above, in the heating operation with emphasis on capacity, the first on-off valve 7 and the second on-off valve 8 are opened, the third on-off valve 9 and the fourth on-off valve 10 are closed, front and rear two rows, and In the heating operation in which the upper and lower two-pass operation is performed and the blowing temperature is emphasized, the first on-off valve 7 and the second on-off valve 8 are closed, the third on-off valve 9 and the fourth on-off valve 10 are opened, and the refrigerant flow In the front row and the upper and lower two-pass operation in which the air flows from the upper intermediate portion 5a and the lower intermediate portion 5b to the outlet, even in a small capacity air conditioner, By setting it as an operation, it becomes possible to raise the temperature of the heating, and to become an air conditioner that can feel warmth.
[0018]
【The invention's effect】
As described above, capacity-oriented heating operation is performed in two rows in the front and rear of the indoor heat exchanger, and upper and lower two-pass operation, and heating operation that places importance on the blowout temperature lowers the refrigerant flow from the upper middle part. In the front row in the windward side of the airflow that flows from the side intermediate part to the outlet, and by performing two-way operation on the upper and lower sides, even in a small-capacity air conditioner, it is possible to increase the temperature at which the air blows out. It becomes an air conditioner that can make you feel warmth.
[Brief description of the drawings]
FIG. 1 is a refrigerant circuit diagram of an air conditioner according to the present invention.
FIG. 2 is a diagram showing an operational relationship of each on-off valve according to the present invention.
FIG. 3 is a pipe connection configuration diagram of the indoor heat exchanger according to the present invention.
FIG. 4 is a refrigerant circuit diagram of an air conditioner showing a conventional example.
FIG. 5 is a pipe connection configuration diagram of an indoor heat exchanger showing a conventional example.
[Explanation of symbols]
1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 Expansion valve 5 Indoor heat exchanger
5a, 5 Intermediate part 6 Indoor fan 7 First on-off valve 8 Second on-off valve 9 Third on-off valve
10 Fourth open / close valve

Claims (6)

圧縮機と、四方弁と、室外熱交換器と、膨張弁と、室内熱交換器とを順次連結し冷媒回路を形成し、前記室内熱交換器の冷媒流路が室内ファンの回転に伴って発生する空気流に対し前後二列に構成され、中央部に２つの入口および２つの出口を備え、冷媒を前記入口側で上下に分流するとともに、前記出口側で合流接続してなる空気調和機において、
前記冷媒流路の前列と後列の上端同士および下端同士をそれぞれ結合する上下二つの結合部を前記室内熱交換器の中間部とし、前記冷媒流路の暖房時の上側入口に第一開閉弁を、下側入口に第二開閉弁を夫々設けるとともに、前記上側中間部と前記第一開閉弁の入口側との間に第三開閉弁を、前記下側中間部と前記第二開閉弁の入口側との間に第四開閉弁を夫々設け、暖房運転時に前記冷媒流路を前後二列で、且つ上下の２パス、もしくは前列一列で、且つ上下の２パスの何れかに選択切換えできるように、前記各開閉弁の開閉を制御してなることを特徴とする空気調和機。A compressor, a four-way valve, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are sequentially connected to form a refrigerant circuit, and the refrigerant flow path of the indoor heat exchanger is accompanied by the rotation of the indoor fan. An air conditioner that is configured in two rows in the front and rear with respect to the generated air flow, has two inlets and two outlets at the center, and divides the refrigerant up and down on the inlet side and joins and connects on the outlet side In
The upper and lower two coupling portions for coupling the upper end and the lower end of the front and rear rows of the refrigerant flow path are intermediate portions of the indoor heat exchanger, and a first opening / closing valve is provided at the upper inlet during heating of the refrigerant flow path. A second on-off valve is provided at the lower inlet, a third on-off valve is provided between the upper intermediate portion and the inlet side of the first on-off valve, and an inlet of the lower intermediate portion and the second on-off valve is provided. A fourth on-off valve is provided between each side of the refrigerant flow path so that the refrigerant flow path can be selectively switched between the front and rear two rows and the upper and lower two passes or the front row and the upper and lower two passes during heating operation. In addition, the air conditioner is characterized by controlling the opening and closing of the on-off valves. 前記冷媒流路を前後二列で、且つ上下の２パスを選択する時、前記第一開閉弁および前記第二開閉弁を開き、前記第三開閉弁および前記第四開閉弁を閉じ、前記冷媒流路を前列一列で、且つ上下の２パスを選択する時、前記第一開閉弁および前記第二開閉弁を閉じ、前記第三開閉弁および前記第四開閉弁を開くよう制御してなることを特徴とする請求項１記載の空気調和機。When the refrigerant flow path is arranged in two front and rear rows and two upper and lower paths are selected, the first on-off valve and the second on-off valve are opened, the third on-off valve and the fourth on-off valve are closed, and the refrigerant When the flow path is in the front row and the upper and lower two paths are selected, the first on-off valve and the second on-off valve are closed, and the third on-off valve and the fourth on-off valve are opened. The air conditioner according to claim 1. 前記冷媒流路の暖房時の入口を後列に、出口を前列に設けてなることを特徴とする請求項１記載の空気調和機。2. The air conditioner according to claim 1, wherein the refrigerant flow passage is provided with an inlet for heating in the rear row and an outlet in the front row. 前記冷媒流路の入口および出口を、前記冷媒流路の長さが上下均等になる中段に設けてなることを特徴とする請求項１または３記載の空気調和機。The air conditioner according to claim 1 or 3, wherein an inlet and an outlet of the refrigerant flow path are provided in a middle stage in which the length of the refrigerant flow path is equal in the vertical direction. 前記第三開閉弁を前記上側中間部の近傍に設け、前記第四開閉弁を前記下側中間部の近傍に設けてなることを特徴とする請求項１記載の空気調和機。The air conditioner according to claim 1, wherein the third on-off valve is provided in the vicinity of the upper intermediate portion, and the fourth on-off valve is provided in the vicinity of the lower intermediate portion. 前記各開閉弁に電磁弁を用いてなることを特徴とする請求項１記１、２または５記載の空気調和機。6. The air conditioner according to claim 1, 2, or 5, wherein an electromagnetic valve is used for each on-off valve.
JP2001219068A 2001-07-19 2001-07-19 Air conditioner Expired - Fee Related JP4686921B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586172U (en) * 1981-07-06 1983-01-14 株式会社日立製作所 Heat pump heating and cooling indoor unit
JPH1082567A (en) * 1996-07-19 1998-03-31 Fujitsu General Ltd Air conditioner and control for the same
JPH10292961A (en) * 1997-04-18 1998-11-04 Fujitsu General Ltd Air conditioner
JPH11316067A (en) * 1997-12-16 1999-11-16 Matsushita Electric Ind Co Ltd Air conditioner using combustible refrigerant
JP2001099470A (en) * 1999-09-30 2001-04-13 Fujitsu General Ltd Air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586172U (en) * 1981-07-06 1983-01-14 株式会社日立製作所 Heat pump heating and cooling indoor unit
JPH1082567A (en) * 1996-07-19 1998-03-31 Fujitsu General Ltd Air conditioner and control for the same
JPH10292961A (en) * 1997-04-18 1998-11-04 Fujitsu General Ltd Air conditioner
JPH11316067A (en) * 1997-12-16 1999-11-16 Matsushita Electric Ind Co Ltd Air conditioner using combustible refrigerant
JP2001099470A (en) * 1999-09-30 2001-04-13 Fujitsu General Ltd Air conditioner

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