JP3404968B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JP3404968B2 JP3404968B2 JP05697495A JP5697495A JP3404968B2 JP 3404968 B2 JP3404968 B2 JP 3404968B2 JP 05697495 A JP05697495 A JP 05697495A JP 5697495 A JP5697495 A JP 5697495A JP 3404968 B2 JP3404968 B2 JP 3404968B2
- Authority
- JP
- Japan
- Prior art keywords
- indoor heat
- heat exchanger
- temperature
- expansion valve
- electronic expansion
- 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.)
- Expired - Fee Related
Links
Landscapes
- Air Conditioning Control Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は除湿機能を備えた空気調
和機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner having a dehumidifying function.
【０００２】[0002]
【従来の技術】以下、従来の技術について図１を用いて
説明する。図１は冷凍サイクルを示しており、図中の矢
印は冷媒の循環方向を現している。室温の低下を防ぎな
がら除湿運転を行なう場合は、冷媒を圧縮機１から室外
熱交換器３に通し冷暖房用減圧装置４をバイパスさせる
ためバイパス用電磁弁５を開く。そして、バイパス用電
磁弁８を閉じ除湿用減圧装置７により減圧させてサイク
ルを構成する。よって室内熱交換器９を再熱機、室内熱
交換器１０を冷却器として作動させる。2. Description of the Related Art A conventional technique will be described below with reference to FIG. FIG. 1 shows a refrigerating cycle, and the arrows in the figure show the circulation direction of the refrigerant. When performing the dehumidifying operation while preventing the room temperature from decreasing, the bypass solenoid valve 5 is opened to pass the refrigerant from the compressor 1 to the outdoor heat exchanger 3 to bypass the cooling / heating decompression device 4. Then, the bypass solenoid valve 8 is closed to reduce the pressure by the dehumidifying decompression device 7 to form a cycle. Therefore, the indoor heat exchanger 9 is operated as a reheater, and the indoor heat exchanger 10 is operated as a cooler.
【０００３】このような技術には、特開平２−２０３１
７２号公報がある。Japanese Patent Laid-Open No. 2-2031 discloses such a technique.
There is No. 72 publication.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記従来の
構成では、以下のような不都合が生じていた。従来のル
ームエアコンの冷媒回路を改良して専用の除湿機能を有
するルームエアコンは、除湿に関しては、梅雨時期だけ
を目的したものであった。このため冬季の多雪多湿期に
十分除湿機能を発揮することができなかった。By the way, in the above-mentioned conventional structure, the following inconveniences have occurred. A room air conditioner having a dedicated dehumidifying function by improving the refrigerant circuit of a conventional room air conditioner is intended for dehumidification only during the rainy season. For this reason, the dehumidifying function could not be sufficiently exerted during the snowy and humid season of winter.
【０００５】冬季の多湿期に使用すると、冬季外気温は
室温に比べて非常に低いので室外熱交換器で凝縮する温
度は非常に低く、また除湿用減圧装置７の絞り量が一定
となる。よって、室内熱交換器１０の蒸発圧力も極めて
低くなり運転を始めると室内熱交換器１０に霜が付着
し、これが短時間ののちに氷層となってしまい除湿機能
が十分に発揮できなくなってしまうものであった。When used in the humid season of winter, the outside temperature in winter is much lower than room temperature, so that the temperature of condensation in the outdoor heat exchanger is very low, and the decompression device 7 for dehumidification has a constant throttle amount. Therefore, the evaporation pressure of the indoor heat exchanger 10 becomes extremely low, and when the operation is started, frost adheres to the indoor heat exchanger 10, and this becomes an ice layer after a short time, so that the dehumidifying function cannot be sufficiently exerted. It was something that ended up.
【０００６】本発明の目的は、室温を下げずに行う除湿
を冬季にでも使用可能にすることにある。An object of the present invention is to enable dehumidification to be performed even in winter without lowering the room temperature.
【０００７】[0007]
【課題を解決するための手段】上記目的は、圧縮機と、
冷暖切換弁と、室外熱交換器と、絞り装置と、二分され
た室内熱交換器と、これら二分された室内熱交換器間に
接続された電子式膨張弁と、前記二分された室内熱交換
器のうち除湿運転のときに冷却器となる室内熱交換器の
温度を感知する温度センサと、除湿運転時、この温度セ
ンサの感知温が低くなった場合、前記電子式膨張弁の開
度を開く機能とを備えることによって達成される。ま
た、上記目的は、圧縮機と、冷暖切換弁と、室外熱交換
器と、絞り装置と、二分された室内熱交換器と、これら
二分された室内熱交換器間に接続された電子式膨張弁
と、外気温を感知する温度センサと、除湿運転時、この
温度センサの感知温が低くなった場合、前記電子式膨張
弁の開度を開く機能とを備えることによって達成され
る。また、上記目的は、圧縮機と、冷暖切換弁と、室外
熱交換器と、絞り装置と、二分された室内熱交換器と、
これら二分された室内熱交換器間に接続された電子式膨
張弁と、前記室外熱交換器の温度を感知する温度センサ
と、除湿運転時、この温度センサの感知温が低くなった
場合、前記電子式膨張弁の開度を絞る機能とを備えるこ
とによって達成される。The above object is to provide a compressor,
A heating / cooling switching valve, an outdoor heat exchanger, a throttling device, a divided indoor heat exchanger, an electronic expansion valve connected between the divided indoor heat exchangers, and the divided indoor heat exchange. Temperature sensor that senses the temperature of the indoor heat exchanger that serves as a cooler during dehumidifying operation of the dehumidifier, and when the temperature sensed by this temperature sensor during dehumidifying operation becomes low, the opening degree of the electronic expansion valve It is achieved by having an opening function. Further, the above-mentioned object is to provide a compressor, a cooling / heating switching valve, an outdoor heat exchanger, a throttling device, a bisected indoor heat exchanger, and an electronic expansion connected between these bisected indoor heat exchangers. This is achieved by providing a valve, a temperature sensor for detecting the outside air temperature, and a function of opening the opening degree of the electronic expansion valve when the temperature sensed by the temperature sensor becomes low during dehumidifying operation. Further, the above object is to provide a compressor, a cooling / heating switching valve, an outdoor heat exchanger, an expansion device, and a bisected indoor heat exchanger,
An electronic expansion valve connected between these two divided indoor heat exchangers, a temperature sensor for sensing the temperature of the outdoor heat exchanger, and a dehumidifying operation, when the sensed temperature of this temperature sensor becomes low, This is achieved by having a function of reducing the opening degree of the electronic expansion valve.
【０００８】[0008]
【作用】この構成によって、室温の低下を防ぐ除湿運転
を行った場合、室内熱交換器を２分した間に設けた電子
式膨張弁の開度を変え、冷却熱器の蒸発温度が下がりす
ぎないように調整し、室温の低下を防ぐ除湿運転を行う
ことが可能となる。With this configuration, when the dehumidifying operation is performed to prevent the room temperature from decreasing, the opening degree of the electronic expansion valve provided while the indoor heat exchanger is divided into two parts is changed to lower the evaporation temperature of the cooling heat device too much. It is possible to perform dehumidification operation that is adjusted so that the room temperature does not drop.
【０００９】[0009]
【実施例】以下、本発明の一実施例について図２を参照
しながら説明する。図２において圧縮機１，四方弁２，
室外熱交換機３，冷暖房用減圧装置４，室内熱交換器
９，室内熱交換器１０，室内熱交換器９，１０を電子式
膨張弁１２によりつなぎ、これらを順次結合して冷凍サ
イクルを構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 2, the compressor 1, the four-way valve 2,
The outdoor heat exchanger 3, the heating / cooling decompression device 4, the indoor heat exchanger 9, the indoor heat exchanger 10, the indoor heat exchangers 9 and 10 are connected by the electronic expansion valve 12, and these are sequentially connected to form a refrigeration cycle. ing.
【００１０】図中の矢印は、冷媒循環方向を現わしてい
る。通常冷房運転および暖房運転時は、冷暖房用減圧装
置４に通すためバイパス用電磁弁５は閉じ、電子式膨張
弁１２は全開としたサイクルとなる。The arrows in the figure represent the direction of refrigerant circulation. During the normal cooling operation and the heating operation, the bypass solenoid valve 5 is closed and the electronic expansion valve 12 is fully opened in order to pass through the cooling / heating decompression device 4.
【００１１】室温を低下させずに除湿運転をする場合、
まずサイクルでは、冷媒は圧縮機１から室外熱交換器３
を通り、室内熱交換器９，１０へと流れていく。このと
き、冷暖房用減圧装置４をバイパスさせるためにバイパ
ス用電磁弁５を開き、高温，高圧のまま室内へと流す。
または、冷暖房用減圧装置４，バイパス用電磁弁５の替
わりに電子式膨張弁を使用し全開としても良い。そし
て、電子式膨張弁１２を温度条件により開度を変える。
また湿度の条件によっても開度を変えることも考えられ
る。When performing dehumidifying operation without lowering the room temperature,
First, in the cycle, the refrigerant flows from the compressor 1 to the outdoor heat exchanger 3
Through the indoor heat exchangers 9 and 10. At this time, the bypass solenoid valve 5 is opened in order to bypass the cooling / heating decompression device 4, and the bypass solenoid valve 5 is allowed to flow into the room at high temperature and high pressure.
Alternatively, an electronic expansion valve may be used instead of the air conditioning decompression device 4 and the bypass solenoid valve 5 to be fully opened. Then, the opening degree of the electronic expansion valve 12 is changed depending on the temperature condition.
It is also possible to change the opening depending on the humidity condition.
【００１２】温度条件により開度を変えるためには、例
えば、室内熱交換器１０（冷却器）の温度を温度センサ
により感知し、蒸発温度が低くなった場合、パルス信号
により、電子式膨張弁１２の開度を必要絞り量まで開
き、蒸発圧力を上昇させ、冷却しすぎない様に制御す
る。他の例としては、外気温度，または室外熱交換器３
の温度を温度センサにより感知し、外気温度，または室
外熱交換器３の温度が低くなった場合、電子式膨張弁１
２の開度を必要絞り量まで開き、蒸発圧力を上昇させ、
冷却しすぎない様に制御する。更に他の例としては、室
内熱交換器５の再熱温度がさがり室温が低下しそうな時
は、室内熱交換器５の温度を温度センサにより感知し、
電子式膨張弁１２の開度を必要熱量を確保される絞り量
まで閉じる制御を行う。In order to change the opening according to the temperature condition, for example, the temperature of the indoor heat exchanger 10 (cooler) is detected by a temperature sensor, and when the evaporation temperature becomes low, a pulse signal is used to output an electronic expansion valve. The opening of 12 is opened to the required throttle amount, the evaporation pressure is increased, and control is performed so as not to overcool. As another example, the outside air temperature or the outdoor heat exchanger 3
Temperature is detected by the temperature sensor, and when the outside air temperature or the temperature of the outdoor heat exchanger 3 becomes low, the electronic expansion valve 1
Open the opening of 2 to the required throttle amount, raise the evaporation pressure,
Control not to overcool. As still another example, when the reheat temperature of the indoor heat exchanger 5 is lowered and the room temperature is likely to drop, the temperature of the indoor heat exchanger 5 is sensed by a temperature sensor,
Control is performed to close the opening degree of the electronic expansion valve 12 to a throttle amount that secures the required amount of heat.
【００１３】更に他の例としては、湿度センサもしく
は、湿度を感知する手段を用いて、電子式膨張弁１２の
開度を変え、再熱量と冷却量を調整し、除湿量を認意に
設定出来る制御とする。As still another example, a humidity sensor or a means for sensing the humidity is used to change the opening of the electronic expansion valve 12 to adjust the reheat amount and the cooling amount, and the dehumidifying amount is arbitrarily set. Control is possible.
【００１４】この結果、室温の低下を防ぎながら除湿を
行なうことが可能になる。更に、冬季の低温多湿期で
も、電子式膨張弁１２の開度を変え再熱量と冷却量を調
整し、室内熱交換器１０で蒸発する冷媒温度が高くな
り、運転後、直ちに、室内熱交換器１０に着霜するとい
うこともなく除湿機能を発揮することができる。As a result, it is possible to perform dehumidification while preventing the room temperature from decreasing. Further, even in the low temperature and high humidity season of winter, the opening degree of the electronic expansion valve 12 is changed to adjust the reheat amount and the cooling amount, the refrigerant temperature evaporated in the indoor heat exchanger 10 becomes high, and the indoor heat exchange is immediately performed after the operation. The dehumidifying function can be exhibited without frosting on the container 10.
【００１５】[0015]
【発明の効果】本発明は除湿運転時、室内熱交換器を２
分した間に設けた電子式膨張弁の開度を変え、冷却器の
蒸発温度が下がりすぎないように調整し、よって、冷却
器に着霜することもなく除湿性能を発揮することがで
き、室温の低下を防ぐ除湿運転を行うことができる。INDUSTRIAL APPLICABILITY According to the present invention, when the dehumidifying operation is performed, the indoor heat exchanger is
By changing the opening of the electronic expansion valve provided during the division, the evaporation temperature of the cooler is adjusted so as not to drop too much, and therefore, the dehumidification performance can be exhibited without frosting on the cooler, A dehumidifying operation that prevents the room temperature from decreasing can be performed.
【図１】従来例を示す空気調和機の冷凍サイクル図。FIG. 1 is a refrigeration cycle diagram of an air conditioner showing a conventional example.
【図２】本発明の一実施例を示す空気調和機の冷凍サイ
クル図。FIG. 2 is a refrigeration cycle diagram of an air conditioner showing an embodiment of the present invention.
１…圧縮機、 ２…四方弁、 ３…室外熱交換器、 ４…冷暖房用減圧装置、 ５…バイパス用電磁弁、 ６…室外ファン、 ７…除湿用減圧装置、 ８…バイパス用電磁弁、 ９…室内熱交換器、 １０…室内熱交換器、 １１…室内ファン、 １２…電子式電動弁。 1 ... Compressor, 2 ... four-way valve, 3 ... Outdoor heat exchanger, 4 Decompression device for cooling and heating, 5 ... By-pass solenoid valve, 6 ... Outdoor fan, 7. Decompression device for dehumidification, 8 ... Solenoid valve for bypass, 9 ... Indoor heat exchanger, 10 ... Indoor heat exchanger, 11 ... indoor fan, 12 ... Electronic motor operated valve.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 29/00 411 F24F 11/02 102 F25B 29/00 381 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) F25B 29/00 411 F24F 11/02 102 F25B 29/00 381
Claims (3)
と、絞り装置と、二分された室内熱交換器と、これら二
分された室内熱交換器間に接続された電子式膨張弁と、
前記二分された室内熱交換器のうち除湿運転のときに冷
却器となる室内熱交換器の温度を感知する温度センサ
と、除湿運転時、この温度センサの感知温が低くなった
場合、前記電子式膨張弁の開度を開く機能とを備えた空
気調和機。1. A compressor, a cooling / heating switching valve, an outdoor heat exchanger, a throttle device, a divided indoor heat exchanger, and an electronic expansion valve connected between these divided indoor heat exchangers. When,
Of the two divided indoor heat exchangers, a temperature sensor that senses the temperature of the indoor heat exchanger that serves as a cooler during dehumidification operation, and if the temperature sensed by this temperature sensor during dehumidification operation decreases, the electronic air conditioner having a function to open the opening of formula expansion valve.
と、絞り装置と、二分された室内熱交換器と、これら二
分された室内熱交換器間に接続された電子式膨張弁と、
外気温を感知する温度センサと、除湿運転時、この温度
センサの感知温が低くなった場合、前記電子式膨張弁の
開度を開く機能とを備えた空気調和機。2. A compressor, a cooling / heating switching valve, an outdoor heat exchanger, a throttle device, a bisected indoor heat exchanger, and an electronic expansion valve connected between these bisected indoor heat exchangers. When,
A temperature sensor for sensing the ambient temperature, during dehumidification operation, in this case the sensed temperature of the temperature sensor becomes lower, the air conditioner having a function to open an opening degree of the electronic expansion valve.
と、絞り装置と、二分された室内熱交換器と、これら二
分された室内熱交換器間に接続された電子式膨張弁と、
前記室外熱交換器の温度を感知する温度センサと、除湿
運転時、この温度センサの感知温が低くなった場合、前
記電子式膨張弁の開度を絞る機能とを備えた空気調和
機。3. A compressor, a cooling / heating switching valve, an outdoor heat exchanger, a throttling device, a divided indoor heat exchanger, and an electronic expansion valve connected between these divided indoor heat exchangers. When,
An air conditioner having a temperature sensor for detecting the temperature of the outdoor heat exchanger, and a function of narrowing the opening of the electronic expansion valve when the temperature sensed by the temperature sensor becomes low during dehumidifying operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05697495A JP3404968B2 (en) | 1995-03-16 | 1995-03-16 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05697495A JP3404968B2 (en) | 1995-03-16 | 1995-03-16 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08254372A JPH08254372A (en) | 1996-10-01 |
| JP3404968B2 true JP3404968B2 (en) | 2003-05-12 |
Family
ID=13042501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05697495A Expired - Fee Related JP3404968B2 (en) | 1995-03-16 | 1995-03-16 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404968B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001124434A (en) * | 1999-10-29 | 2001-05-11 | Daikin Ind Ltd | Air conditioner |
| CN108361884A (en) * | 2018-01-23 | 2018-08-03 | 青岛海尔空调电子有限公司 | Air-conditioning system |
| JP7248922B2 (en) * | 2021-06-23 | 2023-03-30 | ダイキン工業株式会社 | air conditioner |
-
1995
- 1995-03-16 JP JP05697495A patent/JP3404968B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08254372A (en) | 1996-10-01 |
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