JP4258867B2 - Air conditioner - Google Patents
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- JP4258867B2 JP4258867B2 JP31559098A JP31559098A JP4258867B2 JP 4258867 B2 JP4258867 B2 JP 4258867B2 JP 31559098 A JP31559098 A JP 31559098A JP 31559098 A JP31559098 A JP 31559098A JP 4258867 B2 JP4258867 B2 JP 4258867B2
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- heat exchanger
- indoor heat
- valve
- expansion valve
- indoor
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、マルチタイプの空気調和機に係わり、より詳細には、室外機に接続されている複数の室内機のうち、一部の室内機しか運転していない時、停止している室内機の熱交換器内に効率よく冷媒を溜めることができるようにした冷凍サイクルに関する。
【０００２】
【従来の技術】
従来のマルチタイプの空気調和機は、例えば図３で示すように、圧縮機１と、四方弁２と、室外熱交換器３と、第一膨張弁４と、一方の二方弁６と、第一室内熱交換器10と、一方の三方弁７と、第二膨張弁５と、他方の二方弁８と、第二室内熱交換器11と、他方の三方弁９とを夫々直列に接続し、これら第一膨張弁４、一方の二方弁６、第一室内熱交換器10および一方の三方弁７と、第二膨張弁５、他方の二方弁８、第二室内熱交換器11および他方の三方弁９とを夫々並列に接続した冷凍サイクルを形成してなる構成であった。
【０００３】
前記第一室内熱交換器10を備えた第一室内機Ａと、前記第二室内熱交換器11を備えた第二室内機Ｂとのうち何れか一方のみを運転した際、冷凍サイクル内の冷媒がオーバーチャージとなるため、停止している室内機側の室内熱交換器をレシーバタンクとして使用し、同室内熱交換器の冷媒流路に設けられている膨張弁を閉じることで冷媒を溜めるようにしていた。
【０００４】
しかしながら、冷媒を溜めようとする室内熱交換器の片側の冷媒流路が常に開いており、例えば暖房運転時に、吐出ガス（冷媒）を前記室内熱交換器内に直接入れているために効率よく冷媒を溜めることが難しく、また、とくに暖房運転開始時の暖房能力の低下の原因になっていた。
【０００５】
【発明が解決しようとする課題】
本発明においては、上記の問題点に鑑み、室外機に接続されている複数の室内機のうち、一部の室内機しか運転していない時、停止している室内機の熱交換器内に効率よく冷媒を溜めることができるように冷凍サイクルを形成した空気調和機を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明は、上記課題を解決するため、圧縮機と、四方弁と、室外熱交換器と、第一膨張弁と、第一室内熱交換器と、第二膨張弁と、第二室内熱交換器とを夫々直列に接続し、これら第一膨張弁および前記第一室内熱交換器と、第二膨張弁および前記第二室内熱交換器とを夫々並列に接続した冷凍サイクルを形成してなるマルチタイプの空気調和機において、前記四方弁と、前記第一室内熱交換器との間に第一電磁弁を設け、前記四方弁と、前記第二室内熱交換器との間に第二電磁弁を設け、前記室外熱交換器と、前記第一室内熱交換器および前記第二室内熱交換器とを夫々並列に接続した配管に側路を設け、同側路に第三電磁弁を設けた構成となっている。
【０００７】
また、前記第一室内熱交換器を備えた第一室内機と、前記第二室内熱交換器を備えた第二室内機とを暖房運転する際、前記第一電磁弁および前記第二電磁弁を開いて前記第三電磁弁を閉じるとともに、前記第一膨張弁および前記第二膨張弁を絞り、前記圧縮機と、前記四方弁と、前記第一電磁弁および前記第二電磁弁と、前記第一室内熱交換器および前記第二室内熱交換器と、前記第一膨張弁および前記第二膨張弁と、前記室外熱交換器とで形成された冷凍サイクルを構成するようにした。
【０００８】
また、前記第二室内熱交換器を備えた第二室内機の運転を停止して前記第一室内熱交換器を備えた第一室内機を暖房運転する際、前記第一電磁弁および前記第三電磁弁を開いて前記第二電磁弁を閉じるとともに、前記第一膨張弁を絞って前記第二膨張弁を閉じ、前記圧縮機と、前記四方弁と、前記第一電磁弁と、前記第一室内熱交換器と、前記第一膨張弁と、前記室外熱交換器とで形成された冷凍サイクルを構成するようにした。
【０００９】
また、前記第一室内熱交換器を備えた第一室内機の運転を停止して前記第二室内熱交換器を備えた第二室内機を暖房運転する際、前記第二電磁弁および前記第三電磁弁を開いて前記第一電磁弁を閉じるとともに、前記第一膨張弁を閉じて前記第二膨張弁を絞り、前記圧縮機と、前記四方弁と、前記第二電磁弁と、前記第二室内熱交換器と、前記第二膨張弁と、前記室外熱交換器とで形成された冷凍サイクルを構成するようにした。
【００１０】
また、前記第一室内熱交換器を備えた第一室内機と、前記第二室内熱交換器を備えた第二室内機とを冷房運転する際、前記第一電磁弁および前記第二電磁弁を開いて前記第三電磁弁を閉じるとともに、前記第一膨張弁および前記第二膨張弁を絞り、前記圧縮機と、前記四方弁と、前記室外熱交換器と、前記第一膨張弁および前記第二膨張弁と、前記第一室内熱交換器および前記第二室内熱交換器と、前記第一電磁弁および前記第二電磁弁とで形成された冷凍サイクルを構成するようにした。
【００１１】
また、前記第二室内熱交換器を備えた第二室内機の運転を停止して前記第一室内熱交換器を備えた第一室内機を冷房運転する際、前記第一電磁弁および前記第三電磁弁を開いて前記第二電磁弁を閉じるとともに、前記第一膨張弁を絞って前記第二膨張弁を閉じ、前記圧縮機と、前記四方弁と、前記室外熱交換器と、前記第一膨張弁と、前記第一室内熱交換器と、前記第一電磁弁とで形成された冷凍サイクルを構成するようにした。
【００１２】
更に、前記第一室内熱交換器を備えた第一室内機の運転を停止して前記第二室内熱交換器を備えた第二室内機を冷房運転する際、前記第二電磁弁および前記第三電磁弁を開いて前記第一電磁弁を閉じるとともに、前記第一膨張弁を閉じて前記第二膨張弁を絞り、前記圧縮機と、前記四方弁と、前記室外熱交換器と、前記第二膨張弁と、前記第二室内熱交換器と、前記第二電磁弁とで形成された冷凍サイクルを構成するようにした。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態を、添付図面に基づいた実施例として説明する。図１と、図２とにおいて、１は圧縮機、２は四方弁、３は室外熱交換器、４は第一膨張弁、５は第二膨張弁、６は一方の二方弁、７は一方の三方弁、８は他方の二方弁、９は他方の三方弁、10は第一室内熱交換器、11は第二室内熱交換器、12は第一電磁弁、13は第二電磁弁、14は第三電磁弁、Ａは前記第一室内熱交換器10を備えた第一室内機、Ｂは前記第二室内熱交換器11を備えた第二室内機、Ｃは室外機で、前記圧縮機１と、前記四方弁２と、前記室外熱交換器３と、第一膨張弁４と、前記一方の二方弁６と、第一室内熱交換器10と、前記一方の三方弁７と、第二膨張弁５と、前記他方の二方弁８と、第二室内熱交換器11と、前記他方の三方弁９とを夫々直列に接続し、これら第一膨張弁４、一方の二方弁６、第一室内熱交換器10および一方の三方弁７と、第二膨張弁５、他方の二方弁８、第二室内熱交換器11および他方の三方弁９とを夫々並列に接続した冷凍サイクルを形成している。
【００１４】
前記四方弁２と、前記第一室内熱交換器10との間に前記第一電磁弁12を設け、前記四方弁２と、前記第二室内熱交換器11との間に第二電磁弁13を設け、前記室外熱交換器３と、前記第一室内熱交換器10および前記第二室内熱交換器11とを夫々並列に接続した配管に側路14' を設け、同側路14' に第三電磁弁14を設けた構成となっており、これによって、冷媒を溜めようとする室内熱交換器の片側の冷媒流路が常に開いた状態にならないようにできるようになるため、例えば暖房運転時に効率よく冷媒を溜めることが容易にできて、とくに暖房運転開始時の暖房能力を低下させることがないようにできるようにした構造となる。
【００１５】
また、前記第一室内熱交換器10を備えた第一室内機Ａと、前記第二室内熱交換器11を備えた第二室内機Ｂとを暖房運転する際、前記第一電磁弁12および前記第二電磁弁13を開いて前記第三電磁弁14を閉じるとともに、前記第一膨張弁４および前記第二膨張弁５を絞り、前記圧縮機１と、前記四方弁２と、前記第一電磁弁12および前記第二電磁弁13と、前記第一室内熱交換器11および前記第二室内熱交換器12と、前記第一膨張弁４および前記第二膨張弁５と、前記室外熱交換器Ｃとで形成された冷凍サイクルを構成したことにより、前記第一室内機Ａと、前記第二室内機Ｂとを同時に暖房運転して、暖房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００１６】
また、前記第二室内熱交換器11を備えた第二室内機Ｂの運転を停止して前記第一室内熱交換器10を備えた第一室内機Ａを暖房運転する際、前記第一電磁弁12および前記第三電磁弁14を開いて前記第二電磁弁13を閉じるとともに、前記第一膨張弁４を絞って前記第二膨張弁５を閉じ、前記圧縮機１と、前記四方弁２と、前記第一電磁弁12と、前記第一室内熱交換器10と、前記第一膨張弁４と、前記室外熱交換器Ｃとで形成された冷凍サイクルを構成したことにより、前記第二室内機Ｂの運転を停止したことによってオーバーチャージとなった冷媒を、レシーバタンクとして使用できる前記第二室内熱交換器11の中に溜めることができるようになり、最適な冷媒の循環量に調節して、前記第一室内機Ａの暖房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００１７】
また、前記第一室内熱交換器10を備えた第一室内機Ａの運転を停止して前記第二室内熱交換器11を備えた第二室内機Ｂを暖房運転する際、前記第二電磁弁13および前記第三電磁弁14を開いて前記第一電磁弁12を閉じるとともに、前記第一膨張弁４を閉じて前記第二膨張弁５を絞り、前記圧縮機１と、前記四方弁２と、前記第二電磁弁13と、前記第二室内熱交換器11と、前記第二膨張弁５と、前記室外熱交換器Ｃとで形成された冷凍サイクルを構成したことにより、前記第一室内機Ａの運転を停止したことによってオーバーチャージとなった冷媒を、レシーバタンクとして使用できる前記第一室内熱交換器10の中に溜めることができるようになり、最適な冷媒の循環量に調節して、前記第二室内機Ｂの暖房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００１８】
また、前記第一室内熱交換器10を備えた第一室内機Ａと、前記第二室内熱交換器11を備えた第二室内機Ｂとを冷房運転する際、前記第一電磁弁12および前記第二電磁弁13を開いて前記第三電磁弁14を閉じるとともに、前記第一膨張弁４および前記第二膨張弁５を絞り、前記圧縮機１と、前記四方弁２と、前記室外熱交換器Ｃと、前記第一膨張弁４および前記第二膨張弁５と、前記第一室内熱交換器10および前記第二室内熱交換器11と、前記第一電磁弁12および前記第二電磁弁13とで形成された冷凍サイクルを構成したことにより、前記第一室内機Ａと、前記第二室内機Ｂとを同時に冷房運転して、冷房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００１９】
また、前記第二室内熱交換器11を備えた第二室内機Ｂの運転を停止して前記第一室内熱交換器10を備えた第一室内機Ｂを冷房運転する際、前記第一電磁弁12および前記第三電磁弁14を開いて前記第二電磁弁13を閉じるとともに、前記第一膨張弁４を絞って前記第二膨張弁５を閉じ、前記圧縮機１と、前記四方弁２と、前記室外熱交換器Ｃと、前記第一膨張弁４と、前記第一室内熱交換器10と、前記第一電磁弁12とで形成された冷凍サイクルを構成したことにより、前記第二室内機Ｂの運転を停止したことによってオーバーチャージとなった冷媒を、レシーバタンクとして使用できる前記第二室内熱交換器11の中に溜めることができるようになり、最適な冷媒の循環量に調節して、前記第一室内機Ａの冷房運転開始時の立上り能力を高めるとともに、冷房運転時の冷房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００２０】
更に、前記第一室内熱交換器10を備えた第一室内機Ａの運転を停止して前記第二室内熱交換器11を備えた第二室内機Ｂを冷房運転する際、前記第二電磁弁13および前記第三電磁弁14を開いて前記第一電磁弁12を閉じるとともに、前記第一膨張弁４を閉じて前記第二膨張弁５を絞り、前記圧縮機１と、前記四方弁２と、前記室外熱交換器Ｃと、前記第二膨張弁５と、前記第二室内熱交換器11と、前記第二電磁弁13とで形成された冷凍サイクルを構成したことにより、前記第一室内機Ａの運転を停止したことによってオーバーチャージとなった冷媒を、レシーバタンクとして使用できる前記第一室内熱交換器10の中に溜めることができるようになり、最適な冷媒の循環量に調節して、前記第二室内機Ｂの冷房運転開始時の立上り能力を高めるとともに、冷房運転時の冷房能力を損なうことなく快適な空気調和を行えるようにした構造となる。
【００２１】
以上の構成により、図１と図２とで示すように、前記第一室内機Ａおよび前記第二室内機Ｂが上記に説明したような種々の運転状態となるのに応じて、夫々最適な冷媒の循環量となるように調節することが可能であるから、例えば、前記第一室内機Ａまたは前記第二室内機Ｂの何れか一台のみを運転した際、能力を低下させることなく快適な空気調和を行えるようにした空気調和機となる。
【００２２】
【発明の効果】
以上のように本発明によると、室外機に接続されている複数の室内機のうち、一部の室内機しか運転していない時、停止している室内機の熱交換器内に効率よく冷媒を溜めることができるようにして、能力を低下させることなく快適な空気調和を行える冷凍サイクルを形成した空気調和機となる。
【図面の簡単な説明】
【図１】本発明による空気調和機の冷凍サイクルを示す図である。
【図２】本発明による空気調和機の運転モードと各弁の動作とを示す図である。
【図３】従来例による空気調和機の冷凍サイクルを示す図である。
【符号の説明】
１ 圧縮機
２ 四方弁
３ 室外熱交換器
４ 第一膨張弁
５ 第二膨張弁
６ 一方の二方弁
７ 一方の三方弁
８ 他方の二方弁
９ 他方の三方弁
10 第一室内熱交換器
11 第二室内熱交換器
12 第一電磁弁
13 第二電磁弁
14 第三電磁弁
14' 側路
Ａ 第一室内機
Ｂ 第二室内機
Ｃ 室外機[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-type air conditioner, and more specifically, an indoor unit that is stopped when only some of the indoor units are operating among a plurality of indoor units connected to the outdoor unit. The present invention relates to a refrigeration cycle in which refrigerant can be efficiently stored in the heat exchanger.
[0002]
[Prior art]
For example, as shown in FIG. 3, the conventional multi-type air conditioner includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a first expansion valve 4, and one two-way valve 6. The first indoor heat exchanger 10, one three-way valve 7, the second expansion valve 5, the other two-way valve 8, the second indoor heat exchanger 11, and the other three-way valve 9 are connected in series. The first expansion valve 4, one two-way valve 6, the first indoor heat exchanger 10 and one three-way valve 7, the second expansion valve 5, the other two-way valve 8, and the second indoor heat exchange. The refrigeration cycle is formed by connecting the vessel 11 and the other three-way valve 9 in parallel.
[0003]
When only one of the first indoor unit A provided with the first indoor heat exchanger 10 and the second indoor unit B provided with the second indoor heat exchanger 11 is operated, Since the refrigerant is overcharged, the indoor heat exchanger on the indoor unit side that is stopped is used as a receiver tank, and the refrigerant is stored by closing the expansion valve provided in the refrigerant flow path of the indoor heat exchanger. It was like that.
[0004]
However, the refrigerant flow path on one side of the indoor heat exchanger for storing the refrigerant is always open, and, for example, the discharge gas (refrigerant) is directly put into the indoor heat exchanger during heating operation. It was difficult to store the refrigerant, and it was a cause of a decrease in heating capacity particularly at the start of heating operation.
[0005]
[Problems to be solved by the invention]
In the present invention, in view of the above problems, when only some of the indoor units connected to the outdoor unit are operating, the heat exchanger of the indoor unit that is stopped It aims at providing the air conditioner which formed the refrigerating cycle so that a refrigerant | coolant can be stored efficiently.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a compressor, a four-way valve, an outdoor heat exchanger, a first expansion valve, a first indoor heat exchanger, a second expansion valve, and a second indoor heat exchange. Are connected in series to form a refrigeration cycle in which the first expansion valve and the first indoor heat exchanger are connected in parallel with the second expansion valve and the second indoor heat exchanger, respectively. In the multi-type air conditioner, a first electromagnetic valve is provided between the four-way valve and the first indoor heat exchanger, and a second electromagnetic valve is provided between the four-way valve and the second indoor heat exchanger. A valve is provided, a side path is provided in a pipe connecting the outdoor heat exchanger, the first indoor heat exchanger, and the second indoor heat exchanger in parallel, and a third electromagnetic valve is provided in the same side path. It becomes the composition.
[0007]
When the first indoor unit provided with the first indoor heat exchanger and the second indoor unit provided with the second indoor heat exchanger are operated for heating , the first electromagnetic valve and the second electromagnetic valve And closing the third solenoid valve, throttle the first expansion valve and the second expansion valve, the compressor, the four-way valve, the first solenoid valve and the second solenoid valve, A refrigeration cycle formed by the first indoor heat exchanger and the second indoor heat exchanger, the first expansion valve and the second expansion valve, and the outdoor heat exchanger is configured.
[0008]
Further, when the operation of the second indoor unit including the second indoor heat exchanger is stopped and the first indoor unit including the first indoor heat exchanger is operated for heating , the first electromagnetic valve and the first Three solenoid valves are opened to close the second solenoid valve, the first expansion valve is throttled to close the second expansion valve, the compressor, the four-way valve, the first solenoid valve, and the first solenoid valve A refrigeration cycle formed by one indoor heat exchanger, the first expansion valve, and the outdoor heat exchanger is configured.
[0009]
Further, when the heating operation of the second indoor unit having the second indoor heat exchanger to stop the operation of the first indoor unit with the first indoor heat exchanger, the second solenoid valve and the second Three solenoid valves are opened to close the first solenoid valve, the first expansion valve is closed to throttle the second expansion valve, the compressor, the four-way valve, the second solenoid valve, the first A refrigeration cycle formed by two indoor heat exchangers, the second expansion valve, and the outdoor heat exchanger is configured.
[0010]
Further, when performing cooling operation of the first indoor unit including the first indoor heat exchanger and the second indoor unit including the second indoor heat exchanger, the first electromagnetic valve and the second electromagnetic valve The first electromagnetic valve and the second expansion valve are throttled, the compressor, the four-way valve, the outdoor heat exchanger, the first expansion valve, and the second expansion valve A refrigeration cycle formed by the second expansion valve, the first indoor heat exchanger and the second indoor heat exchanger, the first electromagnetic valve and the second electromagnetic valve is configured.
[0011]
Further, when the operation of the second indoor unit including the second indoor heat exchanger is stopped and the first indoor unit including the first indoor heat exchanger is cooled , the first electromagnetic valve and the first Three solenoid valves are opened to close the second solenoid valve, the first expansion valve is throttled to close the second expansion valve, the compressor, the four-way valve, the outdoor heat exchanger, the first A refrigeration cycle formed by one expansion valve, the first indoor heat exchanger, and the first electromagnetic valve is configured.
[0012]
Further, when the operation of the first indoor unit including the first indoor heat exchanger is stopped to cool the second indoor unit including the second indoor heat exchanger, the second electromagnetic valve and the first Three solenoid valves are opened to close the first solenoid valve, the first expansion valve is closed to throttle the second expansion valve, the compressor, the four-way valve, the outdoor heat exchanger, the first A refrigeration cycle formed by the two expansion valves, the second indoor heat exchanger, and the second electromagnetic valve is configured.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described as examples based on the accompanying drawings. 1 and 2, 1 is a compressor, 2 is a four-way valve, 3 is an outdoor heat exchanger, 4 is a first expansion valve, 5 is a second expansion valve, 6 is one of the two-way valves, and 7 is One three-way valve, 8 is the other two-way valve, 9 is the other three-way valve, 10 is the first indoor heat exchanger, 11 is the second indoor heat exchanger, 12 is the first electromagnetic valve, 13 is the second electromagnetic valve 14 is a third electromagnetic valve, A is a first indoor unit provided with the first indoor heat exchanger 10, B is a second indoor unit provided with the second indoor heat exchanger 11, and C is an outdoor unit. The compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the first expansion valve 4, the one two-way valve 6, the first indoor heat exchanger 10, and the one three-way A valve 7, a second expansion valve 5, the other two-way valve 8, a second indoor heat exchanger 11, and the other three-way valve 9 are connected in series, respectively. One two-way valve 6, first indoor heat exchanger 10 and one three A valve 7, the second expansion valve 5, the other two-way valve 8, to form a refrigeration cycle that connects the second indoor heat exchanger 11 and the other three-way valve 9 respectively in parallel.
[0014]
The first electromagnetic valve 12 is provided between the four-way valve 2 and the first indoor heat exchanger 10, and the second electromagnetic valve 13 is provided between the four-way valve 2 and the second indoor heat exchanger 11. A side passage 14 'is provided in a pipe connecting the outdoor heat exchanger 3, the first indoor heat exchanger 10 and the second indoor heat exchanger 11 in parallel, and the side passage 14' Since the third electromagnetic valve 14 is provided, and this makes it possible to prevent the refrigerant flow path on one side of the indoor heat exchanger to store the refrigerant from being always open, for example, heating The refrigerant can be easily stored efficiently during operation, and the heating capacity at the start of the heating operation can be prevented from being deteriorated.
[0015]
When the first indoor unit A provided with the first indoor heat exchanger 10 and the second indoor unit B provided with the second indoor heat exchanger 11 are heated , the first electromagnetic valve 12 and The second electromagnetic valve 13 is opened and the third electromagnetic valve 14 is closed, and the first expansion valve 4 and the second expansion valve 5 are throttled, and the compressor 1, the four-way valve 2, and the first The electromagnetic valve 12 and the second electromagnetic valve 13, the first indoor heat exchanger 11 and the second indoor heat exchanger 12, the first expansion valve 4 and the second expansion valve 5, and the outdoor heat exchange By configuring the refrigeration cycle formed by the unit C, the first indoor unit A and the second indoor unit B can be simultaneously heated to perform comfortable air conditioning without impairing the heating capacity. It becomes the structure made.
[0016]
Further, when the operation of the second indoor unit B provided with the second indoor heat exchanger 11 is stopped and the first indoor unit A provided with the first indoor heat exchanger 10 is heated , the first electromagnetic The valve 12 and the third electromagnetic valve 14 are opened and the second electromagnetic valve 13 is closed, the first expansion valve 4 is throttled and the second expansion valve 5 is closed, and the compressor 1 and the four-way valve 2 are closed. And the second solenoid valve 12, the first indoor heat exchanger 10, the first expansion valve 4, and the outdoor heat exchanger C constitute a refrigeration cycle. The refrigerant overcharged by stopping the operation of the indoor unit B can be stored in the second indoor heat exchanger 11 that can be used as a receiver tank, and adjusted to the optimum refrigerant circulation amount. Thus, comfortable air conditioning can be performed without impairing the heating capacity of the first indoor unit A. The structure is as follows.
[0017]
When the operation of the first indoor unit A provided with the first indoor heat exchanger 10 is stopped and the second indoor unit B provided with the second indoor heat exchanger 11 is operated for heating , the second electromagnetic The valve 13 and the third electromagnetic valve 14 are opened and the first electromagnetic valve 12 is closed, the first expansion valve 4 is closed and the second expansion valve 5 is throttled, and the compressor 1 and the four-way valve 2 are closed. And the second electromagnetic valve 13, the second indoor heat exchanger 11, the second expansion valve 5, and the outdoor heat exchanger C constitute a refrigeration cycle. The refrigerant overcharged by stopping the operation of the indoor unit A can be stored in the first indoor heat exchanger 10 that can be used as a receiver tank, and adjusted to the optimum refrigerant circulation amount. Thus, comfortable air conditioning can be performed without impairing the heating capacity of the second indoor unit B. The structure is as follows.
[0018]
When the first indoor unit A provided with the first indoor heat exchanger 10 and the second indoor unit B provided with the second indoor heat exchanger 11 are in cooling operation, the first electromagnetic valve 12 and The second solenoid valve 13 is opened and the third solenoid valve 14 is closed, and the first expansion valve 4 and the second expansion valve 5 are throttled, the compressor 1, the four-way valve 2, and the outdoor heat. The exchanger C, the first expansion valve 4 and the second expansion valve 5, the first indoor heat exchanger 10 and the second indoor heat exchanger 11, the first electromagnetic valve 12 and the second electromagnetic valve. Since the refrigeration cycle formed by the valve 13 is configured, the first indoor unit A and the second indoor unit B can be simultaneously cooled to perform comfortable air conditioning without impairing the cooling performance. It becomes the structure made.
[0019]
When the second indoor unit B including the second indoor heat exchanger 11 is stopped and the first indoor unit B including the first indoor heat exchanger 10 is cooled , The valve 12 and the third electromagnetic valve 14 are opened and the second electromagnetic valve 13 is closed, the first expansion valve 4 is throttled and the second expansion valve 5 is closed, and the compressor 1 and the four-way valve 2 are closed. And the second heat exchanger C, the first expansion valve 4, the first indoor heat exchanger 10, and the first electromagnetic valve 12 constitute a refrigeration cycle. The refrigerant overcharged by stopping the operation of the indoor unit B can be stored in the second indoor heat exchanger 11 that can be used as a receiver tank, and adjusted to the optimum refrigerant circulation amount. And while raising the starting capability at the time of the cooling operation start of said 1st indoor unit A, The structure is such that comfortable air conditioning can be performed without impairing the cooling capacity during cooling operation.
[0020]
Further, when the operation of the first indoor unit A provided with the first indoor heat exchanger 10 is stopped and the second indoor unit B provided with the second indoor heat exchanger 11 is cooled , The valve 13 and the third electromagnetic valve 14 are opened and the first electromagnetic valve 12 is closed, the first expansion valve 4 is closed and the second expansion valve 5 is throttled, and the compressor 1 and the four-way valve 2 are closed. And a refrigeration cycle formed by the outdoor heat exchanger C, the second expansion valve 5, the second indoor heat exchanger 11, and the second electromagnetic valve 13, the first The refrigerant overcharged by stopping the operation of the indoor unit A can be stored in the first indoor heat exchanger 10 that can be used as a receiver tank, and adjusted to the optimum refrigerant circulation amount. And while raising the starting capability at the time of the cooling operation start of said 2nd indoor unit B, The structure is such that comfortable air conditioning can be performed without impairing the cooling capacity during cooling operation.
[0021]
With the above configuration, as shown in FIGS. 1 and 2, the first indoor unit A and the second indoor unit B are optimal in accordance with various operating states as described above. Since it is possible to adjust the amount of refrigerant to be circulated, for example, when only one of the first indoor unit A or the second indoor unit B is operated, the comfort is not reduced. It becomes an air conditioner that can perform proper air conditioning.
[0022]
【The invention's effect】
As described above, according to the present invention, when only some of the indoor units connected to the outdoor unit are operating, the refrigerant is efficiently contained in the heat exchanger of the stopped indoor unit. Thus, an air conditioner is formed which forms a refrigeration cycle that can perform comfortable air conditioning without reducing the capacity.
[Brief description of the drawings]
FIG. 1 is a diagram showing a refrigeration cycle of an air conditioner according to the present invention.
FIG. 2 is a diagram showing an operation mode of the air conditioner according to the present invention and the operation of each valve.
FIG. 3 is a diagram showing a refrigeration cycle of an air conditioner according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compressor 2 Four-way valve 3 Outdoor heat exchanger 4 First expansion valve 5 Second expansion valve 6 One two-way valve 7 One three-way valve 8 The other two-way valve 9 The other three-way valve
10 First indoor heat exchanger
11 Second indoor heat exchanger
12 First solenoid valve
13 Second solenoid valve
14 Third solenoid valve
14 'Side A First indoor unit B Second indoor unit C Outdoor unit
Claims (6)
構成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, a first expansion valve, a first indoor heat exchanger, a second expansion valve, and a second indoor heat exchanger are connected in series, respectively. A first expansion valve and the first indoor heat exchanger, a second expansion valve and the second indoor heat exchanger are respectively connected in parallel, and a first expansion valve and the first indoor heat exchanger One electromagnetic valve is provided, a second electromagnetic valve is provided between the four-way valve and the second indoor heat exchanger, the outdoor heat exchanger, the first indoor heat exchanger, and the second indoor heat exchange. In the air conditioner, characterized in that a side passage is provided in a pipe connected to each other in parallel, and a third electromagnetic valve is provided on the side passage, wherein the second indoor chamber is provided with the second indoor heat exchanger. When the first indoor unit equipped with the first indoor heat exchanger is cooled, the first electromagnetic valve and the third electromagnetic valve are opened. And closing the second solenoid valve, closing the second expansion valve by closing the first expansion valve, the compressor, the four-way valve, the outdoor heat exchanger, the first expansion valve, An air conditioner comprising a refrigeration cycle formed by the first indoor heat exchanger and the first electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31559098A JP4258867B2 (en) | 1998-11-06 | 1998-11-06 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31559098A JP4258867B2 (en) | 1998-11-06 | 1998-11-06 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000146360A JP2000146360A (en) | 2000-05-26 |
| JP4258867B2 true JP4258867B2 (en) | 2009-04-30 |
Family
ID=18067192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31559098A Expired - Fee Related JP4258867B2 (en) | 1998-11-06 | 1998-11-06 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4258867B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021112470A1 (en) * | 2019-12-03 | 2021-06-10 | Samsung Electronics Co., Ltd. | Air conditioner |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100398499B1 (en) * | 2000-12-18 | 2003-09-19 | 삼성전자주식회사 | Air conditioner having to turning refrigerant unit and control method thereof |
| CN100465538C (en) * | 2004-04-30 | 2009-03-04 | 乐金电子(天津)电器有限公司 | Valve support base for air-conditioner with one outdoor set and multiple indoor sets |
| CN103363626A (en) * | 2012-03-31 | 2013-10-23 | 青岛海信日立空调系统有限公司 | Air conditioner circulation system |
| CN105066501B (en) | 2015-07-22 | 2017-05-03 | 广东美的暖通设备有限公司 | Outdoor unit of multi-split air conditioner and multi-split air conditioner comprising same |
| CN111706959B (en) * | 2020-06-15 | 2022-03-29 | 青岛海尔空调器有限总公司 | Electronic expansion valve fault detection method and device for multi-split air conditioner and air conditioner |
| CN112665036A (en) * | 2020-12-08 | 2021-04-16 | 珠海格力电器股份有限公司 | Four-pipe system, cold and heat capacity adjusting and controlling method and device and air conditioner |
-
1998
- 1998-11-06 JP JP31559098A patent/JP4258867B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021112470A1 (en) * | 2019-12-03 | 2021-06-10 | Samsung Electronics Co., Ltd. | Air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000146360A (en) | 2000-05-26 |
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