JPH0311634Y2 - - Google Patents

Description

【考案の詳細な説明】 （産業上の利用分野） 本考案は冷房運転と加湿運転とが可能な空気調
和機に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an air conditioner capable of cooling operation and humidification operation.

（従来の技術） 電算機室、電話交換機室のような外気とは遮断
され、かつ潜熱負荷が殆ど発生しなくて顕熱負荷
の方がはるかに大きい雰囲気を空気調和する場
合、特に冷房運転を行う場合には、直膨形で冷却
すると除湿が同時に行われて室内の湿度が低下し
てきて極度に乾き過ぎると機械の性能に悪影響を
及ぼして好ましくないので、再加湿が必要とな
る。(Prior art) When air-conditioning an atmosphere such as a computer room or telephone exchange room that is isolated from the outside air and generates almost no latent heat load and has a much larger sensible heat load, it is especially important to avoid cooling operation. If this is the case, if the room is cooled using a direct expansion type, dehumidification will occur at the same time and the humidity in the room will drop.If the room becomes too dry, it will adversely affect the performance of the machine, which is undesirable, so rehumidification will be necessary.

そこで冷房機に加湿器を組込ませて脱湿した分
に見合つて加湿器による加湿を併行させることが
従来から成されており、その例として実開昭55−
69635号公報により開示されてなる如く公知であ
る。 Therefore, it has been conventional practice to incorporate a humidifier into the air conditioner and use the humidifier to compensate for the amount of moisture removed.
This method is known as disclosed in Japanese Patent No. 69635.

上記公知例を第４図及び第５図に示す。前記第
４図図示に係るものは、誘引形で、かつ蒸発器ａ
の上流側で加湿器ｂによる加湿を行うものであ
り、一方、第５図図示に係るものは、同じく誘引
形であつて、蒸発器ｃをバイパスする側路ｄを空
気通路中に設けて、この側路ｄにおける蒸発器用
ドレンパンｅよりも下方位置に加湿器ｆを設け
て、この加湿器ｆにドレンパンｅのドレンを導通
させてドレンの再利用による加湿を行うものであ
る。 The above known examples are shown in FIGS. 4 and 5. The one shown in FIG. 4 is of the induced type and has an evaporator a.
Humidification is carried out by a humidifier b on the upstream side of the evaporator c.On the other hand, the one shown in FIG. A humidifier f is provided below the evaporator drain pan e in this side path d, and the drain of the drain pan e is connected to the humidifier f to perform humidification by reusing the drain.

（考案が解決しようとする課題） ところで前者の公知例は蒸発器ａに流れ込む空
気に加湿する方式で、加湿された空気が蒸発器ａ
を通るために凝縮しやすく、恒温，恒湿の冷房を
行うものでは一般に蒸発器ａの蒸発温度が低いた
めに蒸発器ａでより一層凝縮しやすくて加湿効率
は60％程度に下がる結果、加湿器ｂが大形となる
し、ランニングコストが上昇する不利は免れ得な
い。(Problem to be solved by the invention) By the way, the former known example is a method of humidifying the air flowing into the evaporator a, and the humidified air flows into the evaporator a.
In devices that provide constant temperature and constant humidity cooling, the evaporation temperature of evaporator a is generally low, so condensation occurs even more easily in evaporator a, and the humidification efficiency drops to about 60%. The disadvantage is that the container b becomes large and the running cost increases.

一方、後者の公知例は室内からの還気の一部を
蒸発器ｃにバイパスさせて途中で加湿させ、蒸発
器ｃで冷却された湿度の低い空気と加湿空気とを
フアンの吸込側で合流させ冷却と加湿とを同時に
行わせる方式であるので加湿効率は改善される
が、前記フアンは蒸発器ｃを通つた冷気によつて
可成りの低温に冷却されており、加湿された高湿
度の空気がフアンのハウジングに接触するときに
フアンに結露が生じ易くなる。 On the other hand, in the latter known example, a part of the return air from the room is bypassed to the evaporator c and humidified midway, and the low-humidity air cooled by the evaporator c and the humidified air are combined on the suction side of the fan. Since this method performs cooling and humidification at the same time, the humidification efficiency is improved, but the fan is cooled to a considerably low temperature by the cold air that has passed through the evaporator c, Condensation tends to form on the fan when air comes into contact with the fan housing.

また、蒸発器ｃ出口空気の状態は冷却されるこ
とによつて相対湿度が高くなつているため、部分
的に飽和状態となつた空気が存在していた蒸発し
きれないまま水滴で浮遊する分が多く、その結
果、結露した水分や上記水滴がフアン気流に乗つ
て吹出口から室内（機外）に送出されるキヤリー
オーバー現象が起生し易くてエリミネータを設け
るなどの対策を講じなければならない不都合があ
る。 In addition, the condition of the air at the exit of the evaporator C is that the relative humidity has increased due to cooling, so some of the air that has become partially saturated is suspended as water droplets without being fully evaporated. As a result, condensed moisture and water droplets are carried by the fan airflow and sent out from the air outlet into the room (outside the machine), which tends to cause a carry-over phenomenon, so it is necessary to take measures such as installing an eliminator. There are some inconveniences that cannot be avoided.

このようにいずれの方式も改善を要する問題点
があるところから本考案はかかる欠点を排除すべ
く成されたものであつて、加湿空気は蒸発器に通
さないで側路に流通させるバイパス方式の利点を
活用すると共に、冷房運転と加湿運転とを交互に
行わせて同時運転に伴う弊害を避けて、加湿効率
を高度維持、キヤリオーバーの解消を果たしなが
ら恒温，恒湿の効用を安定下にて実現させようと
するものである。 As described above, both methods have problems that require improvement, and the present invention was developed to eliminate these drawbacks. In addition to utilizing the advantages, cooling operation and humidification operation are performed alternately to avoid the disadvantages associated with simultaneous operation, maintaining a high level of humidification efficiency, eliminating carryover, and stabilizing the effects of constant temperature and humidity. This is what we are trying to achieve.

（課題を解決するための手段） しかして本考案は図面に例示してなる如く、吸
込口２、吹出口３を有するケーシング１内に前記
吸込口２、吹出口３との間に亘る空気通路４を設
けて、この空気通路４中に、ドレンパン８を備え
た蒸発器６とフアン７とを蒸発器６の方がが上流
側となる前後の配列に設置すると共に、蒸発器６
をバイパスし得る側路５を設けて、前記側路５に
おける前記ドレンパン８よりも下方位置に加湿器
９を配設し、この加湿器９に前記ドレンパン８の
ドレンを導かせてなる空気調和機において、前記
加湿器９内に液面検出器１１を設けて、設定した
高水位及び低水位を検出可能とする一方、前記加
湿器９内の水位が下がつてきて、前記設定水位以
下になつた際に液面検出器１１が発信する低水位
信号によつて、加湿器９の運転を止め、同時に蒸
発器６の冷却運転を行わせる一方、逆に水位が上
がつてきて前記設定高水位以上になつた際に、液
面検出器１１が発信する高水位信号によつて、蒸
発器６の冷却運転を止め、同時に加湿器９の運転
を行わせる切換回路１２を設けたことを特徴とす
る。(Means for Solving the Problem) As illustrated in the drawings, the present invention provides an air passage extending between the suction port 2 and the blowout port 3 in a casing 1 having the suction port 2 and the blowout port 3. 4, and in this air passage 4, an evaporator 6 with a drain pan 8 and a fan 7 are installed in a front-back arrangement with the evaporator 6 on the upstream side.
An air conditioner comprising: a side passage 5 that can bypass the water; a humidifier 9 is disposed below the drain pan 8 in the side passage 5; and the humidifier 9 guides the drain from the drain pan 8. In this case, a liquid level detector 11 is provided in the humidifier 9 to be able to detect a set high water level and a low water level. When the water level rises, a low water level signal sent by the liquid level detector 11 stops the operation of the humidifier 9 and at the same time causes the evaporator 6 to perform a cooling operation. A switching circuit 12 is provided which stops the cooling operation of the evaporator 6 and simultaneously starts the operation of the humidifier 9 based on the high water level signal sent by the liquid level detector 11 when the water level exceeds the high level. Features.

（作用） 本考案は加湿器９内の水位が常に設定高水位と
設定低水位との間に保たれるように加湿運転を制
御しており、しかもこの加湿用の水が蒸発器６で
脱湿した水分のみであるところから、蒸発器６の
除湿量に見合う加湿量の給湿を安定かつ確実に行
わせることができる。(Function) The present invention controls the humidifying operation so that the water level in the humidifier 9 is always maintained between the set high water level and the set low water level, and furthermore, this humidifying water is removed by the evaporator 6. Since only moist water is present, it is possible to stably and reliably supply humidification in an amount commensurate with the amount of dehumidification by the evaporator 6.

また、加湿運転中は蒸発器６の冷却運転を停止
して室内還気中に加湿を行うことにより、比較的
温度の高い空気中に加湿させるところから、加湿
効率が多角、かつ水滴の発生を防ぐことができ、
さらにフアン７自体の温度を低下させることがな
くて、結露の防止がはかれる。 In addition, during humidification operation, the cooling operation of the evaporator 6 is stopped and the indoor return air is humidified, thereby humidifying relatively high-temperature air, which increases humidification efficiency and reduces the generation of water droplets. can be prevented,
Furthermore, since the temperature of the fan 7 itself does not decrease, dew condensation can be prevented.

（実施例） 以下、本考案の１実施例を添付図面にもとづい
て詳述する。(Example) Hereinafter, one example of the present invention will be described in detail based on the accompanying drawings.

第１図は空気調和機の室内側ニユツトであり、
ケーシング１には前面板の中程に吸込口２を、頂
面板の中央部に吹出口３を夫々開口して有する。 Figure 1 shows the indoor unit of the air conditioner.
The casing 1 has an inlet 2 in the middle of the front plate and an outlet 3 in the center of the top plate.

そして冷却用吸込口２Ａを前面板の中間部に、
加湿用吸込口２Ｂを同じく下方部に夫々開口せし
めている。 And the cooling suction port 2A is placed in the middle part of the front plate.
The humidifying suction ports 2B are similarly opened at the lower part.

前記ケーシング１の内部は、吸込口２Ａ，２Ｂ
と吹出口３との間に亘らせて空気通路４を形成さ
せて、この空気通路４中に蒸発器６とフアン７と
を配設している。 The inside of the casing 1 has suction ports 2A and 2B.
An air passage 4 is formed between the air outlet 3 and the air outlet 3, and an evaporator 6 and a fan 7 are disposed in the air passage 4.

蒸発器６はクロスフイン形熱交換器からなつて
いて、前記冷却用吸込口２Ａの直後方において該
吸込口２２Ａを掩わせるように立設し、一方、フ
アン７は吹出部を前記吹出口３に臨ませてケーシ
ング１内上方部に配置し固定せしめており、従つ
て蒸発器６がフアン７に対し上流側となる前後の
配列をなして誘引方式の室内側ユニツトに形成し
ている。 The evaporator 6 is composed of a cross-fin type heat exchanger, and is installed upright immediately behind the cooling suction port 2A so as to cover the cooling suction port 22A, while the fan 7 has a blow-off portion connected to the blow-off port 3. The evaporators 6 are arranged and fixed in the upper part of the casing 1 so as to face the fan 7, and the evaporator 6 is arranged in a front-back arrangement on the upstream side with respect to the fan 7, forming an indoor unit of the induction type.

上記ケーシング１内には加湿用吸込口２Ｂから
フアン７を経て吹出口３に至る空気通路が存在し
ており、この空気通路は空気通路４中で蒸発器６
をバイパスし得る側路５に形成されていることは
言うまでもなく、そしてこの側路５中において、
蒸発器６の直下に設けたドレンパン８よりも下方
位置、すなわち前記吸込口２Ｂの直後方の位置に
加湿器９例えば超音波発生器１０を付属して有す
る超音波加湿器９を配設している。 Inside the casing 1, there is an air passage from the humidifying inlet 2B to the air outlet 3 via the fan 7.
Needless to say, it is formed in a side passage 5 that can bypass the
A humidifier 9, for example, an ultrasonic humidifier 9 having an attached ultrasonic generator 10 is disposed at a position below the drain pan 8 provided directly below the evaporator 6, that is, at a position immediately behind the suction port 2B. There is.

上記加湿器９は超音波発生器１０に通電する
と、適当量の水が貯溜されている容器内に浸漬し
て設けた超音波振動子が起振して貯溜水に振動エ
ネルギーを与える結果、水面から極微粒の水分と
なつて飛び出して、霧状となり、側路５を流れる
空気中に拡散して給湿を行うものであつて公知の
構造である。 In the humidifier 9, when the ultrasonic generator 10 is energized, the ultrasonic vibrator, which is immersed in a container in which an appropriate amount of water is stored, vibrates and imparts vibrational energy to the stored water. This is a well-known structure in which water is ejected as extremely fine particles, becomes a mist, and diffuses into the air flowing through the side channel 5 to supply moisture.

そして、この加湿器９における水溜め部とドレ
ンパン８とを配管で接続せしめて、蒸発器６で脱
湿した水分だけが加湿用原水となつて外部からの
給水は一切成されないよう形成させている。 The water reservoir in the humidifier 9 and the drain pan 8 are connected by piping, so that only the water dehumidified by the evaporator 6 becomes raw water for humidification, and no water is supplied from outside. .

上記加湿器９の水溜め部に関連して液面検出器
１１を設けているが、この液面検出器１１は２つ
のフロートスイツチからなつていて、一方は低水
位検出用として、他方は高水位検出用として検出
レベルを異ならしめて前記水溜め部の水面部に浮
子を浮遊させて設けた公知の構造であつて、両フ
ロートスイツチともに水位が設定水位を越えると
閉成し、若干のデイフアレンシヤルを存して水位
が設定水位以下になると開放する設定を有してい
る。 A liquid level detector 11 is provided in connection with the water reservoir of the humidifier 9, and this liquid level detector 11 consists of two float switches, one for detecting low water levels and the other for detecting high water levels. This is a known structure in which floats are suspended on the water surface of the water reservoir section with different detection levels for water level detection, and both float switches close when the water level exceeds the set water level, causing a slight differential. It has an allencial valve and is set to open when the water level falls below a set water level.

この液面検出器１１は例えば加湿器９を10〜15
分連続運転したことによつて減少する水量に見合
つた高水位と低水位とを設定しておくものであ
る。 This liquid level detector 11 detects, for example, a humidifier 9 of 10 to 15
A high water level and a low water level are set in accordance with the amount of water that decreases due to continuous operation for several minutes.

叙上の構成になる空気調和機の電気回路及び冷
凍回路を第２図及び第３図に示しているがまず冷
凍回路は圧縮機１３、凝縮器１４、感温膨張弁１
５、、蒸発器６からなる公知の回路であり、室外
側ユニツトは圧縮機１３、凝縮器１４の他に凝縮
器用フアン１６等を備えている。なお、第３図中
１７はフイルタである。 The electric circuit and refrigeration circuit of the air conditioner having the above configuration are shown in Figs.
5. This is a known circuit consisting of an evaporator 6, and the outdoor unit is equipped with a compressor 13, a condenser 14, and a condenser fan 16. Note that 17 in FIG. 3 is a filter.

一方、電気回路は第２図に示しているが、制御
対象の機器としてフアン７のモータ７Ｍ、加湿器
９の超音波発生器１０、圧縮機１３のモータ１３
Ｍ、凝縮器用フアン１６のモータ１６Ｍを有し、
それ等機器を電源RSTに断続させるものとして、
モータ７Ｍ用の電磁接触器の接点２１とコイル２
１Ｓ、モータ１３Ｍ用の電磁接触器の接点２０及
びコイル２０Ｓ、モータ１６Ｍ用の電磁接触器の
接点２２及びコイル２２Ｓ、超音波発生器１０用
の電磁接触器の接点２３及コイル２３Ｓを有し、
さらに制御機器として低水位検知用の接点１１Ｌ
と高水位検知用の接点１１Ｈとからなる液面検出
器１１、１つの常閉接点２４Ｂと１つの常開接点
２４Ａを有する低水位リレー２４、１つの常閉接
点２５Ｂと１つの常開接点２５Ａを有する高水位
リレー２５、運転釦スイツチ２６、停止釦スイツ
チ２７、及び室温サーモ２８を有している。 On the other hand, the electric circuit is shown in FIG. 2, and the devices to be controlled include the motor 7M of the fan 7, the ultrasonic generator 10 of the humidifier 9, and the motor 13 of the compressor 13.
M, has a motor 16M of the condenser fan 16,
As such equipment is connected to the power supply RST intermittently,
Contact 21 and coil 2 of electromagnetic contactor for motor 7M
1S, an electromagnetic contactor contact 20 and coil 20S for the motor 13M, an electromagnetic contactor contact 22 and coil 22S for the motor 16M, and an electromagnetic contactor contact 23 and coil 23S for the ultrasonic generator 10,
In addition, 11L contacts for low water level detection are used as control equipment.
and a contact 11H for high water level detection, a low water level relay 24 having one normally closed contact 24B and one normally open contact 24A, one normally closed contact 25B and one normally open contact 25A. It has a high water level relay 25, a run button switch 26, a stop button switch 27, and a room temperature thermostat 28.

前記制御機器のうち前記液面検出器１１の両接
点１１Ｌ，１１Ｈは低高各々の接点水位以下のと
き開放となり、設定水位を越えるると閉成となる
ように作動する。 Among the control devices, both contacts 11L and 11H of the liquid level detector 11 are operated to open when the water level is below the low and high contact levels, and to close when the set water level is exceeded.

なお、第２図中２１Ａはモータ７Ｍ用の電磁接
触器に付設されている前記接点２１とは別の補助
接点、２４Ｓは低水位リレー２４のコイル、２５
Ｓは高水位リレー２５のコイルである。 In addition, in FIG. 2, 21A is an auxiliary contact other than the contact 21 attached to the electromagnetic contactor for the motor 7M, 24S is a coil of the low water level relay 24, and 25
S is a coil of the high water level relay 25.

そして図示の結線要領によつて制御回路が構成
されるが、そのうち二点鎖線で囲繞してなる切換
回路を要説すると、前記低水位検知用の接点１１
Ｌに接続される低水位リレー２４と高水位検知用
の接点１１Ｈに接続される高水位リレー２５を有
し、水位が設定低水位以下のとき低水位リレー２
４の消磁によつて閉成となり、設定低水位を越え
ると低水位リレー２４の励磁によつて開放となる
常閉接点２４Ｂと、水位が設定高水位以下のとき
高水位リレー２５の消磁によつて閉成となり、設
定高水位を越えると高水位リレー２５の励磁によ
つて開放となる常閉接点２５Ｂと、室温サーモ２
８の接点と、圧縮機１３のモータ１３Ｍ用の電磁
接触器のコイル２０Ｓとで直列回路を形成してさ
らに前記常閉接点２４Ｂに対し前記モータ１３Ｍ
用の電磁接触器の自己保持用常開接点２０Ａを並
列に接続して圧縮機１３のモータ１３Ｍを発停す
る制御部、すなわち蒸発器６の冷却運転を発停す
る制御部を形成している。 A control circuit is constructed according to the wiring connection shown in the figure, and the switching circuit surrounded by the two-dot chain line is briefly described as the contact point 11 for low water level detection.
It has a low water level relay 24 connected to L and a high water level relay 25 connected to contact 11H for high water level detection, and when the water level is below the set low water level, the low water level relay 2
A normally closed contact 24B is closed by demagnetization of 4, and is opened by excitation of the low water level relay 24 when the set low water level is exceeded, and a normally closed contact 24B is closed by the demagnetization of the high water level relay 25 when the water level is below the set high water level. The normally closed contact 25B is closed, and when the set high water level is exceeded, the high water level relay 25 is energized and opened, and the room temperature thermostat 2
8 and the coil 20S of the electromagnetic contactor for the motor 13M of the compressor 13, forming a series circuit, and further connecting the normally closed contact 24B to the coil 20S of the magnetic contactor for the motor 13M of the compressor 13.
The self-holding normally open contacts 20A of the electromagnetic contactor are connected in parallel to form a control unit that starts and stops the motor 13M of the compressor 13, that is, a control unit that starts and stops the cooling operation of the evaporator 6. .

一方、水位が設定高水位以下のとき高水位リレ
ー２５の消磁によつて開放となり、設定高水位を
越えると高水位リレー２５の励磁によつて閉成と
なる常開接点２５Ａと、水位が設定低水位以下の
とき低水位リレー２４の消磁によつて開放とな
り、設定低水位を越えると低水位リレー２４の励
磁によつて閉成となる常開接点２４Ａと、超音波
発生器１０用の電磁接触器のコイル２３Ｓとで直
列回路を形成して、さらに前記常開接点２５Ａに
対し、前記超音波発生器１０用の電磁接触器の自
己保持用常開接点２３Ａと圧縮機１３のモータ１
３Ｍ用の電磁接触器の常閉接点２０Ｂとを夫々並
列に接続して加湿運転を発停する制御部を形成し
ている。次に、第２図の制御回路に基づく詳細な
説明を行う前に、圧縮機１３、加湿器９それぞれ
の運転制御、流者１３，９の切換運転制御につい
て概略説明する。 On the other hand, when the water level is below the set high water level, the normally open contact 25A is opened by demagnetizing the high water level relay 25, and when it exceeds the set high water level, it is closed by the excitation of the high water level relay 25, and the water level is set. A normally open contact 24A that is opened by demagnetizing the low water level relay 24 when the water level is below the low water level, and closed by the excitation of the low water level relay 24 when the set low water level is exceeded, and an electromagnetic contact for the ultrasonic generator 10. A series circuit is formed with the coil 23S of the contactor, and the self-holding contact 23A of the electromagnetic contactor for the ultrasonic generator 10 and the motor 1 of the compressor 13 are connected to the normally open contact 25A.
The normally closed contacts 20B of the 3M electromagnetic contactor are connected in parallel to form a control unit that starts and stops the humidification operation. Next, before giving a detailed explanation based on the control circuit shown in FIG. 2, the operation control of the compressor 13 and the humidifier 9, and the switching operation control of the flowers 13 and 9 will be briefly explained.

圧縮機１３は室温が設定温度よりも高く、かつ
加湿器９の水位が設定低水位以下となつたときに
付勢し、この付勢を室温が設定温度よりも下がる
か、あるいは加湿器９の水位が設定高水位を越え
るまで持続させて停止に切り換えられる。 The compressor 13 is energized when the room temperature is higher than the set temperature and the water level of the humidifier 9 is below the set low water level. It is maintained until the water level exceeds the set high water level and then switched to stop.

一方、加湿器９は、加湿器９の水位が設定低水
位を越え設定高水位以下でかつ圧縮機１３が停止
しているとき、また加湿器９の水位が設定高水位
を越えたときにいずれも加湿運転を開始し、この
運転を加湿器９の水位が設定低水位以下になるま
で持続させて停止に切り換えられる。 On the other hand, the humidifier 9 is activated when the water level of the humidifier 9 exceeds the set low water level and is below the set high water level and the compressor 13 is stopped, and when the water level of the humidifier 9 exceeds the set high water level. The humidifying operation starts, and this operation is continued until the water level of the humidifier 9 becomes lower than the set low water level, and then it is switched to stop.

従つて上記切換回路１２を設けたことによつ
て、加湿器９内の水位が下がつてきて、設定低水
位以下になると、加湿運転していた加湿器９を停
止した圧縮機１３を付勢し蒸発器６の冷却運転を
行わせ、また、逆に水位が上がつてきて、設定高
水位を越えると、運転していた圧縮機１３を停止
し蒸発器６による冷却運転を停めて、加湿器９の
加湿運転を行わせるようになる。 Therefore, by providing the above-mentioned switching circuit 12, when the water level in the humidifier 9 decreases and becomes below the set low water level, the compressor 13 is switched on to stop the humidifier 9 that was in humidifying operation. When the water level rises and exceeds the set high water level, the compressor 13 that was being operated is stopped and the cooling operation by the evaporator 6 is stopped. , the humidifier 9 is started to perform humidifying operation.

なお、この運転を通じてフアン７は運転を続け
ていることは云うまでもなく、また、実施例の切
換回路１２は室温サーモ２８によつて圧縮機１３
が停止すると直ちに加湿器９の加湿運転に自動切
換えが成されるようになつている。 It goes without saying that the fan 7 continues to operate throughout this operation, and the switching circuit 12 of the embodiment switches the compressor 13 by the room temperature thermostat 28.
Immediately after the humidifier 9 stops, the humidifying operation of the humidifier 9 is automatically switched to the humidifying operation.

つぎに、第２図の制御回路に基づいて詳細に説
明する。 Next, a detailed explanation will be given based on the control circuit shown in FIG.

上述の構成になる空気調和機は、運転釦スイツ
チ２６を閉成することにより、モータ７Ｍ用の電
磁接触器のコイル２１Ｓが励磁され、その接点２
１が閉成となり、モーータ７Ｍに通電され、フア
ン７が運転される。なお、このとき前記コイル２
１Ｓの補助接点２１Ａが閉成となり自己保持され
る。そして室温が設定値よりも高くて冷房が必要
であると、室内サーモ２８の接点が閉成となり、
このときはまだ加湿器９内には水が溜まつていな
いので、液面検出器１１の両接点１１Ｌ，１１Ｈ
はいずれも開放となつており、従つて低水位リレ
ー２４及び高低位リレー２５は両方とも消磁状態
であり、２つの常閉接点２４Ｂ，２５Ｂはともに
閉成となつていることから、モータ１３Ｍ用の電
磁接触器のコイル２０Ｓ及びモータ１６Ｍ用の電
磁接触器のコイル２２Ｓが励磁され、各モータ１
３Ｍ，１６Ｍの各電磁接触器の接点２０，２２の
閉成により圧縮機１３及び凝縮器用フアン１６が
付勢して冷凍回路は冷媒の強制循環が成されて蒸
発器６は冷却運転を開始する。 In the air conditioner configured as described above, by closing the operation button switch 26, the coil 21S of the electromagnetic contactor for the motor 7M is energized, and its contact 2
1 is closed, the motor 7M is energized, and the fan 7 is operated. Note that at this time, the coil 2
The 1S auxiliary contact 21A is closed and self-maintained. When the room temperature is higher than the set value and cooling is necessary, the contact of the indoor thermostat 28 closes.
At this time, water has not yet accumulated in the humidifier 9, so both contacts 11L and 11H of the liquid level detector 11
are both open, therefore, both the low water level relay 24 and the high/low level relay 25 are in a demagnetized state, and the two normally closed contacts 24B and 25B are both closed. The coil 20S of the electromagnetic contactor for the motor 16M and the coil 22S of the electromagnetic contactor for the motor 16M are excited, and the coil 22S of the electromagnetic contactor for each motor 1
By closing the contacts 20 and 22 of the 3M and 16M electromagnetic contactors, the compressor 13 and condenser fan 16 are energized, the refrigerant circuit is forced to circulate the refrigerant, and the evaporator 6 starts cooling operation. .

その結果、室内の冷房が行われると共に蒸発器
６では脱湿が同時に成されるので、脱湿により生
じたドレンは、ドレンパン８を経て加湿器９内に
導入し、その水位が漸次上昇してくる。 As a result, the room is cooled and dehumidified at the same time in the evaporator 6, so that the drain generated by the dehumidification is introduced into the humidifier 9 through the drain pan 8, and its water level gradually rises. come.

そして水位が設定低水位を越えると、低水位検
知用の接点１１Ｌが閉成となり、低水位リレー２
４が励磁され、その常閉接点２４Ｂが開放とな
り、常開接点２４Ａが閉成となる。しかし、この
とき常閉接点２４Ｂが開放となつても、自己保持
用常開接点２０Ａが閉成となつているので、２つ
のコイル２０Ｓ，２２Ｓは励磁されたままとな
り、接点２０，２２は閉成であるので両モータ１
３Ｍ，１６Ｍは通電が持続され冷却運転が続行さ
れる。また、常開接点２４Ａが閉成となつても、
常閉接点２０Ｂは開放、常開接点２５Ａは開放、
自己保持用常開接点２３Ａは開放となつているの
で、コイル２３Ｓは消磁状態となつており、その
接点２３は開放であるので超音波発生器１０には
通電されず、加湿運転はされない。 When the water level exceeds the set low water level, the low water level detection contact 11L closes, and the low water level relay 2
4 is excited, its normally closed contact 24B becomes open, and its normally open contact 24A becomes closed. However, even if the normally closed contact 24B is opened at this time, the self-holding normally open contact 20A is closed, so the two coils 20S and 22S remain energized, and the contacts 20 and 22 are closed. Since both motors 1
3M and 16M are kept energized and continue cooling operation. Moreover, even if the normally open contact 24A is closed,
Normally closed contact 20B is open, normally open contact 25A is open,
Since the self-holding normally open contact 23A is open, the coil 23S is in a demagnetized state, and since the contact 23 is open, the ultrasonic generator 10 is not energized and no humidification operation is performed.

さらに、冷却運転が続行し、水位が設定高水位
を越えると、液面検出器１１の高水位検知用の接
点１１Ｈが閉成となり、高水位リレー２５が励磁
され、常閉接点２５Ｂの開放により、２つのコイ
ル２０Ｓ，２２Ｓは消磁され、各接点２０，２２
が開放ととなり、両モータ１３Ｍ，１６Ｍは非通
電となる。従つて圧縮機１３，凝縮器用フアン１
６が消勢して冷却運転は停止し、蒸発器６での冷
却は止まる。 Furthermore, when the cooling operation continues and the water level exceeds the set high water level, the high water level detection contact 11H of the liquid level detector 11 is closed, the high water level relay 25 is energized, and the normally closed contact 25B is opened. , the two coils 20S, 22S are demagnetized, and each contact 20, 22
is open, and both motors 13M and 16M are de-energized. Therefore, the compressor 13 and the condenser fan 1
6 is deenergized, the cooling operation is stopped, and cooling in the evaporator 6 is stopped.

一方、常開接点２４Ａが既に閉成している状態
で前記高水位リレー２５の常開接点２５Ａが同時
に閉成することにより、超音波発生器１０用の電
磁接触器の接点２３が閉成して加湿器９が加湿運
転を開始する。 On the other hand, when the normally open contact 24A is already closed, the normally open contact 25A of the high water level relay 25 is simultaneously closed, so that the contact 23 of the electromagnetic contactor for the ultrasonic generator 10 is closed. The humidifier 9 starts humidifying operation.

この加湿運転により、水位は徐々に低下するこ
ととなる。水位が設定高水位以下となると、高水
位検知用の接点１１Ｈが開放となり、高水位リレ
ー２５が消磁され、常閉接点２５Ｂは閉成、常開
接点２５Ａは開放となる。しかし、このときは常
閉接点２４Ｂは開放、自己保持用常開接点２０Ａ
は開放となつているので、２つのコイル２０Ｓ，
２２Ｓは消磁されたままであり、冷却運転は停止
したままである。また常開接点２５Ａが開放とな
つても、常閉接点２０Ｂ、自己保持用常開接点２
３Ａは閉成となつているので、コイル２３Ｓは励
磁されたままであり、加湿運転が続行される。 This humidification operation causes the water level to gradually decrease. When the water level falls below the set high water level, the high water level detection contact 11H is opened, the high water level relay 25 is demagnetized, the normally closed contact 25B is closed, and the normally open contact 25A is opened. However, at this time, the normally closed contact 24B is open, and the self-holding normally open contact 20A
is open, so the two coils 20S,
22S remains demagnetized and cooling operation remains stopped. Furthermore, even if the normally open contact 25A is opened, the normally closed contact 20B, the self-holding normally open contact 2
Since the coil 3A is closed, the coil 23S remains excited and the humidification operation continues.

この加湿運転は水位が低下してきて設定低水位
以下になるまで約10〜15分程度行われるので蒸発
器６で脱湿した水分は室内に戻される。 This humidification operation is continued for about 10 to 15 minutes until the water level decreases to below the set low water level, and the moisture dehumidified by the evaporator 6 is returned to the room.

その際冷却運転は中断していて加湿が行われる
空気は室内からの還気であるので、加湿効率が高
く、また相対湿度が低いので湿分が水滴となるこ
とも少なく、さらに、前記フアン７のハウジング
も室温まで上昇してくるので、この部分での結露
も生じない。 At this time, the cooling operation is interrupted and the air to be humidified is the return air from the room, so the humidification efficiency is high, and the relative humidity is low, so moisture rarely turns into water droplets. Since the housing also rises to room temperature, no condensation occurs in this area.

そして水位が設定低水位以下まで低下すると、
低水位検知用の接点１１Ｌが開放となるので、低
水位リレー２４が消磁され、その常閉接点２４Ｂ
が閉成となり、常開接点２４Ａは開放となる。従
つて前記常開接点２４Ａが開放となることによ
り、加湿運転が終了し、前記常閉接点２４Ｂが閉
成となることにより、室温サーモ２８が閉成であ
れば冷却運転が開始される。 When the water level drops below the set low water level,
Since the low water level detection contact 11L is opened, the low water level relay 24 is demagnetized and its normally closed contact 24B
is closed, and the normally open contact 24A is opened. Therefore, when the normally open contact 24A is opened, the humidifying operation ends, and when the normally closed contact 24B is closed, the cooling operation is started if the room temperature thermostat 28 is closed.

上述したごとく加湿運転が終了すると、再び前
記切換回路１２の作用によつて冷房運転に切換え
られ、かくして冷房と加湿とが交互に繰り返され
て恒温，恒湿の運転が保持される。 When the humidification operation is completed as described above, the switching circuit 12 switches to the cooling operation again, and thus cooling and humidification are alternately repeated to maintain constant temperature and humidity operation.

なお、実施例は前述した通り、室温サーモ２８
による室温一定の制御が成されて室温の低下の方
が加湿器９での水位低下よりも早ければ冷房運転
を直ちに停止して加湿運転に切換えるようになつ
ていることは言うまでもない。すなわち、冷却運
転中で、加湿器９内の水位が設定高水位以下で設
定低水位を越えた状態である場合に、室内温度が
設定温度以下に低下し、室温サーモ２８が開放と
なつて冷却運転が停止されると、２つのコイル２
０Ｓ，２２Ｓは消磁されるので、常閉接点２０Ｂ
が閉成となり、、常開接点２４Ａは閉成となつて
いることから、コイル２３Ｓが励磁され、接点２
３が閉成となり、超音波発生器１０に通電され、
加湿運転がなされる。 In addition, as mentioned above, in the embodiment, the room temperature thermometer 28
It goes without saying that if the room temperature is controlled to be constant and the room temperature drops faster than the water level in the humidifier 9 drops, the cooling operation is immediately stopped and the humidification operation is started. That is, during cooling operation, if the water level in the humidifier 9 is below the set high water level and exceeds the set low water level, the room temperature drops below the set temperature, and the room temperature thermostat 28 is opened to cool the room. When the operation is stopped, the two coils 2
Since 0S and 22S are demagnetized, normally closed contact 20B
is closed, and the normally open contact 24A is closed, so the coil 23S is energized and the contact 2
3 is closed, the ultrasonic generator 10 is energized,
Humidification operation is performed.

（考案の効果） 本考案は以上の説明によつて明らかな通り、加
湿器９内に送られる加湿用原水である除湿水の水
位を検出して設定高水位で冷房から加湿に運転を
切換え、かつ設定低水位で加湿から冷房に運転を
切換えるようにしているので、除湿した水分を加
湿により室内に再送する繰り返しを行うことによ
り恒温，恒湿を確実かつ簡単に自動制御し得る。(Effects of the invention) As is clear from the above explanation, the present invention detects the water level of dehumidifying water, which is raw water for humidification sent into the humidifier 9, and switches the operation from cooling to humidification at a set high water level. In addition, since the operation is switched from humidification to cooling at a set low water level, constant temperature and humidity can be reliably and easily automatically controlled by repeatedly sending dehumidified moisture back into the room through humidification.

しかも、加湿器９の加湿運転は蒸発器６での冷
却を止めている間に行わせているで、相対湿度が
比較的低い室内からの還気中に加湿させることに
より加湿効率が高くて加湿器９はコンパクトな構
造のものでよく、ランニングコストは低く抑える
ことができる。 In addition, the humidification operation of the humidifier 9 is performed while cooling in the evaporator 6 is stopped, and humidification efficiency is high by humidifying the return air from the room where the relative humidity is relatively low. The container 9 may have a compact structure, and running costs can be kept low.

さらに、前記フアン７は室内からの還気が流通
することによつてハウジング等の温度が室温に近
い状態となるので、加湿空気が通過するに際して
結露を生じるおそれがなくなり、従つて加湿効率
が高くて水滴の含有が殆どない空気をそのまま室
内に再送することが可能で、水滴の放出を末然に
防止し得る利点がある。 Furthermore, the temperature of the housing, etc., is brought close to room temperature by circulating the return air from the room in the fan 7, so there is no risk of condensation occurring when the humidified air passes through, and therefore, the humidification efficiency is high. The air containing almost no water droplets can be sent back into the room as it is, which has the advantage of ultimately preventing the release of water droplets.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の１例に係る室内側ユニツトの
略示構造図、第２図は同じく電気回路図、第３図
は同じく冷凍回路図、第４図及び第５図は従来例
を示す断面説明図である。 １……ケーシング、２……吸込口、３……吹出
口、４……空気通路、５……側路、６……蒸発
器、７……フアン、８……ドレンパン、９……加
湿器、１１……液面検出器、１２……切換回路。 Fig. 1 is a schematic structural diagram of an indoor unit according to an example of the present invention, Fig. 2 is an electric circuit diagram, Fig. 3 is a refrigeration circuit diagram, and Figs. 4 and 5 show a conventional example. It is a cross-sectional explanatory view. 1... Casing, 2... Suction port, 3... Outlet, 4... Air passage, 5... Side passage, 6... Evaporator, 7... Fan, 8... Drain pan, 9... Humidifier , 11...Liquid level detector, 12...Switching circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 吸込口２、吹出口３を有するケーシング１内の
吸込口２、吹出口３間に亘る空気通路４中に、ド
レンパン８を備えた蒸発器６とフアン７とを蒸発
器６が上流側となる前後の配列に設置すると共
に、蒸発器６をバイパスし得る側路５を設けて、
前記側路５における前記ドレンパン８よりも下方
位置に加湿器９を配設し、この加湿器９に前記ド
レンパン８のドレンを導かせてなる空気調和機に
おいて、前記加湿器９内に液面検出器１１を設け
て、設定した高水位及び低水位を検出可能とする
一方、前記加湿器９内の水位が下がつてきて、前
記設定低水位以下になつた際に液面検出器１１が
発信する低水位信号によつて、加湿器９の運転を
止め、同時に蒸発器６の冷却運転を行わせる一
方、逆に水位が上がつてきて前記設定高水位以上
になつた際に、液面検出器１１が発信する高水位
信号によつて、蒸発器６の冷却運転を止め、同時
に加湿器９の運転を行わせる切換回路１２を設け
たことを特徴とする空気調和機。 An evaporator 6 equipped with a drain pan 8 and a fan 7 are installed in an air passage 4 extending between an inlet 2 and an outlet 3 in a casing 1 having an inlet 2 and an outlet 3, with the evaporator 6 located on the upstream side. are installed in a front and rear arrangement, and a side passage 5 that can bypass the evaporator 6 is provided,
In an air conditioner in which a humidifier 9 is disposed below the drain pan 8 in the side passage 5 and the humidifier 9 guides the drain from the drain pan 8, there is a liquid level detection device in the humidifier 9. A water level detector 11 is provided to enable detection of the set high water level and low water level, and when the water level in the humidifier 9 falls below the set low water level, the liquid level detector 11 detects the water level. The humidifier 9 stops operating and the evaporator 6 cools down at the same time based on the low water level signal that is transmitted.On the other hand, when the water level rises and exceeds the set high water level, the liquid An air conditioner characterized by being provided with a switching circuit 12 that stops the cooling operation of the evaporator 6 and simultaneously starts the operation of the humidifier 9 in response to a high water level signal transmitted by a surface detector 11.