JPH0792259B2 - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPH0792259B2 JPH0792259B2 JP61162691A JP16269186A JPH0792259B2 JP H0792259 B2 JPH0792259 B2 JP H0792259B2 JP 61162691 A JP61162691 A JP 61162691A JP 16269186 A JP16269186 A JP 16269186A JP H0792259 B2 JPH0792259 B2 JP H0792259B2
- Authority
- JP
- Japan
- Prior art keywords
- condensation water
- rotation speed
- evaporator
- dew condensation
- air
- 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 - Lifetime
Links
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- Air Conditioning Control Device (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電算機室、OA機器室のような顕熱負荷が大部
分を占める雰囲気で使用して、加湿を必要としない空気
調和機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is an air conditioner which is used in an atmosphere where a sensible heat load occupies most, such as a computer room and an OA equipment room, and which does not require humidification. It is about.
電算機室、OA機器室のような潜熱負荷がほとんどなく、
顕熱負荷が大部分を占める雰囲気を空気調和する場合、
原則的には顕熱のみを処理すればよい。しかるに、直膨
形の蒸発機を用いた空気調和機では、冷房に伴って除湿
が行われるので、必然的に室内の湿度低下を招く。そし
て、室内が過度に乾燥した場合には、室内の各機器に悪
影響を与える結果となる。There is almost no latent heat load like the computer room and OA equipment room,
When air-conditioning the atmosphere where the sensible heat load occupies most,
In principle, only sensible heat should be processed. However, in an air conditioner using a direct expansion type evaporator, dehumidification is performed along with cooling, which inevitably leads to a decrease in indoor humidity. If the room is excessively dried, it will adversely affect each device in the room.
このようなことから、顕熱負荷が大部分を占める雰囲気
で使用される空気調和機では、実開昭55−69635号公
報、特開昭59−56028号公報、実開昭61−63624号公報等
に見られるように、本体ケーシング内の吸込口から吹出
口に至る空気通路に、蒸発機とともに加湿器を設けるこ
とが通例になっている。Therefore, in the air conditioner used in the atmosphere where the sensible heat load occupies most of the air conditioners, Japanese Utility Model Publication No. Sho 55-69635, Japanese Patent Publication No. 59-56028, and Japanese Utility Model Publication No. 61-63624 are disclosed. As seen in the above, it is customary to provide a humidifier together with an evaporator in the air passage from the suction port to the air outlet in the main body casing.
ところが、このような加湿器を備えた空気調和機では、
空気中から除湿した水分を空気中に再度添加することか
ら、エネルギー損失が大きい。また加湿器の他に給水設
備等の付帯設備を必要とすることから、設備構造が複雑
化し、設備コストの上昇、メンテナンスの複雑化といっ
た問題を生じる。However, in an air conditioner equipped with such a humidifier,
Since the moisture dehumidified from the air is added again to the air, the energy loss is large. In addition to the humidifier, additional equipment such as water supply equipment is required, which complicates the equipment structure, raises equipment costs, and complicates maintenance.
更に、加湿器の取付け位置によっては、加湿された空気
が蒸発器、ファン等の湿度の低い部分において再凝縮を
おこし、加湿効率の低下や、結露した水分乃至水滴がフ
ァン気流に乗って吹出口から機外に吐出される、いわゆ
るキャリーオーバー現象を生じる問題がある。Furthermore, depending on the mounting position of the humidifier, the humidified air re-condenses in low-humidity areas such as the evaporator and fan, reducing humidification efficiency and allowing condensed water or water droplets to enter the fan air stream and blow out the air. There is a problem that a so-called carry-over phenomenon occurs, which is a discharge from the machine.
また、この再凝縮は、実開昭61−63624号公報に記載の
空気調和機で試みられているように、加湿中に冷房運転
を停止し、加湿運転のみを独立して行うことで一応は防
止されるが、室温が高い場合には除湿量が増し、その結
果、加湿時間が相対的に長くなって室温の上昇を招き、
温度制御そのものに支障を来す危険がある。Further, this recondensation is temporarily possible by stopping the cooling operation during humidification and independently performing only the humidifying operation, as is attempted in the air conditioner described in Japanese Utility Model Laid-Open No. 61-63624. Although it is prevented, when the room temperature is high, the dehumidification amount increases, and as a result, the humidification time becomes relatively long and the room temperature rises.
There is a risk that it will hinder the temperature control itself.
本発明は、このような状況に鑑み、冷房運転中の除湿現
象そのものをなくし、これにより除上の多くの問題点を
一挙に解決せしめた空気調和機を提供するものである。In view of such a situation, the present invention provides an air conditioner that eliminates the dehumidification phenomenon itself during cooling operation and thereby solves many problems in elimination at once.
本発明の空気調和機は、第１図および第５図に例示され
る如く、圧縮機１、凝縮器２、膨張機構４および蒸発器
５を有する冷媒回路を備え、本体ケーシング７内の吸込
口８から吹出口９に至る空気通路10に前記蒸発器５およ
び室内ファン11を備えてなる空気調和機において、前記
蒸発器５の下部乃至下方に構成される結露水通路と、害
結露水通路に配設され配設通路中の結露水を検出して発
信する結露センサ13（第２図参照）と、該結露水センサ
13の出力する結露水検出信号を受けたときに蒸発温度を
上昇させる蒸発温度制御手段とを具備せしめたものであ
る。The air conditioner of the present invention includes a refrigerant circuit having a compressor 1, a condenser 2, an expansion mechanism 4 and an evaporator 5, as illustrated in FIGS. 1 and 5, and has a suction port in a main body casing 7. In the air conditioner including the evaporator 5 and the indoor fan 11 in the air passage 10 from the air blower 8 to the outlet 9, in the condensation water passage formed below or below the evaporator 5 and the harmful condensation water passage. Condensation sensor 13 (see FIG. 2) for detecting and transmitting the condensation water in the disposed passage and the condensation water sensor
Evaporation temperature control means for increasing the evaporation temperature when receiving the dew condensation water detection signal output from 13 is provided.
ここで、蒸発温度制御手段としては、次のが採用さ
れる。Here, the following is adopted as the evaporation temperature control means.
第１図に例示されるように、室内ファン11の回転数
調節手段17′と、結露水センサ13の出力する結露水検知
信号を受けたときに、前記回転数調節手段17′に回転数
上昇指令を発信する制御回路19′とからなる蒸発温度制
御手段20′。As illustrated in FIG. 1, when the rotation speed adjusting means 17 'of the indoor fan 11 and the condensation water detection signal output from the condensation water sensor 13 are received, the rotation speed adjusting means 17' increases the rotation speed. Evaporation temperature control means 20 'comprising a control circuit 19' for issuing a command.
第５図に例示されるように、圧縮機１および室内フ
ァン11の各回転数調節手段17および17′と、結露水セン
サ13の出力する結露水検知信号を受けたときに、前記各
回転数調節手段17および17′にそれぞれ回転数低下指令
および回転数上昇指令を発信する制御回路19″とからな
る蒸発温度制御手段20″。As illustrated in FIG. 5, when the rotation speed adjusting means 17 and 17 ′ of the compressor 1 and the indoor fan 11 and the condensation water detection signal output from the condensation water sensor 13 are received, the rotation speeds of the rotation speed are adjusted. Evaporation temperature control means 20 "comprising a control circuit 19" for issuing a rotation speed lowering command and a rotation speed increasing command to the adjusting means 17 and 17 ', respectively.
本発明の空気調和機において、冷房運転中に除湿が生じ
かけた場合、除湿により発生した水滴がドレンパン12等
の結露水通路に流入し始め結露水センサ13にて検出され
る。このようにして除湿開始が検知されると、直ちに室
内ファン15の回転数が増大するか、もしくは圧縮機１お
よび室内ファン15の各回転数がそれぞれ低下および増大
して、蒸発温度が上昇し、蒸発器５を通過する空気の冷
却温度が上昇する。除湿は蒸発器５を通過する空気がそ
の露点温度以下に冷却されたときに生じるので、蒸発器
５を通過する空気の冷却温度が上昇することにより、除
湿が止まる。再度、除湿が生じかけた場合も同様にして
蒸発温度を上昇させ、これを繰り返すことにより実質的
に除湿を伴うことなく冷房運転が実施される。In the air conditioner of the present invention, when dehumidification is about to occur during cooling operation, water droplets generated by dehumidification start to flow into the dew condensation water passage such as the drain pan 12 and are detected by the dew condensation water sensor 13. When the dehumidification start is detected in this way, the rotation speed of the indoor fan 15 immediately increases, or the rotation speeds of the compressor 1 and the indoor fan 15 respectively decrease and increase, and the evaporation temperature rises. The cooling temperature of the air passing through the evaporator 5 rises. Dehumidification occurs when the air passing through the evaporator 5 is cooled to a temperature below its dew point temperature. Therefore, the dehumidification stops when the cooling temperature of the air passing through the evaporator 5 rises. When dehumidification is about to occur again, the evaporation temperature is similarly raised, and by repeating this, the cooling operation is carried out substantially without dehumidification.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図〜第４図は本発明の第１実施例を示したもので、
第１図は冷媒回路図、第２図は室内ユニットの模式断面
図、第３図は電気回路図、第４図は制御フロー図であ
る。1 to 4 show a first embodiment of the present invention,
FIG. 1 is a refrigerant circuit diagram, FIG. 2 is a schematic sectional view of an indoor unit, FIG. 3 is an electric circuit diagram, and FIG. 4 is a control flow diagram.
第１図によると、圧縮機１の冷媒ガス吐出側に順番に凝
縮器２、受液器３、膨張弁よりなる膨張機構４、蒸発器
５およびアキュムレータ６が接続され、アキュムレータ
６の冷媒出側が更に前記凝縮器２の冷媒入側に接続され
て、冷媒の循環回路が構成されている。そしてこの冷媒
回路を構成する各機器のうち、圧縮機１、受液器３、膨
張機構４、蒸発器５およびアキュムレータ６は室内側に
あって室内ユニットを構成し、凝縮器２は室外側にあっ
て室外ユニットを構成している。なお、結露水センサ1
3、圧縮機１の回転数調節手段17′およびその制御回路1
9′については、後で第２図および第３図により詳しく
説明する。According to FIG. 1, a condenser 2, a liquid receiver 3, an expansion mechanism 4 including an expansion valve, an evaporator 5 and an accumulator 6 are connected in this order to the refrigerant gas discharge side of the compressor 1, and the refrigerant outlet side of the accumulator 6 is connected. Further, it is connected to the refrigerant inlet side of the condenser 2 to form a refrigerant circulation circuit. Of the devices constituting this refrigerant circuit, the compressor 1, the liquid receiver 3, the expansion mechanism 4, the evaporator 5 and the accumulator 6 are on the indoor side to form an indoor unit, and the condenser 2 is on the outdoor side. It constitutes an outdoor unit. The dew condensation sensor 1
3, rotation speed adjusting means 17 'of the compressor 1 and its control circuit 1
9'will be described in detail later with reference to FIGS.
室内ユニットを示す第２図において、７は本体ケーシン
グで、その下部に前記圧縮機１を収容している。本体ケ
ーシング７の前面中央部には室内空気の吸込口８が、ま
た前面上部には吹出口９がそれぞれ設けられ、更に吹込
口８から吹出口９に至る空気通路10には前記蒸発器５お
よび室内ファン11が配設され、蒸発器５の直下にはドレ
ンパン12が配設され、蒸発器５において除湿により生じ
た結露水がこのドレンパン12に入り、更にドレンパン12
に滞溜することなく緊急用貯水タンク14に流入するよう
構成されている。そして、ドレンパン12の内面傾斜部15
には結露水センサ13が貼着されている。In FIG. 2 showing the indoor unit, 7 is a main body casing, and the compressor 1 is accommodated in the lower part thereof. An inlet 8 for indoor air is provided at the center of the front surface of the main body casing 7, and a blowout port 9 is provided at the upper portion of the front face. Further, an air passage 10 from the blowout port 8 to the blowout port 9 is provided with the evaporator 5 and An indoor fan 11 is provided, and a drain pan 12 is provided immediately below the evaporator 5. Condensation water generated by dehumidification in the evaporator 5 enters the drain pan 12, and further the drain pan 12 is provided.
It is configured to flow into the emergency water storage tank 14 without accumulating in the tank. Then, the inner inclined portion 15 of the drain pan 12
A dew condensation water sensor 13 is attached to the.
この結露水センサ13は、蒸発器５において除湿により生
じた結露水を検知するためのもので、水蒸気と結露水が
電気的に識別できるものであればいずれでもよく、具体
的には例えば、対象雰囲気が結露を生じない相対湿度10
0％未満の場合、絶縁もしくはこれに近い高抵抗を示
し、対象雰囲気が相対湿度100％の結露状態に至った場
合には、抵抗値が高抵抗から低抵抗にスイッチング的に
変化する抵抗変化型素子等、公知の構造のものを用いる
ことができる。また、結露水センサ13の取り付け位置は
前記ドレンパン12の他に、例えば蒸発器５底部、ドレン
パン12と貯水タンク14との接続部等、結露水が通過する
箇所であればいずれでもよい。ただし、貯水タンク14の
底等、結露水が滞溜する危険のある箇所は、蒸発器５に
おける除湿の有無にかかわらず結露水検出信号を発信す
る危険性があるので不適である。The dew condensation water sensor 13 is for detecting dew condensation water generated by dehumidification in the evaporator 5, and may be any as long as it can electrically distinguish the water vapor from the dew condensation water. Relative humidity 10
When it is less than 0%, it exhibits insulation or high resistance close to it, and when the target atmosphere reaches a dew condensation state of 100% relative humidity, the resistance value changes from high resistance to low resistance in a switching manner. A known structure such as an element can be used. Further, the attachment position of the dew condensation water sensor 13 may be any place other than the drain pan 12 as long as the dew condensation water passes through, such as the bottom of the evaporator 5 and the connecting portion between the drain pan 12 and the water storage tank 14. However, a portion such as the bottom of the water storage tank 14 where there is a risk of condensing condensed water is not suitable because there is a risk of transmitting a condensed water detection signal regardless of whether or not the evaporator 5 is dehumidified.
第３図の電気回路において、MCは圧縮機用電動機で、電
源に通電可能に接続されている。また、この電源には、
室内ファン用電動機MFIがインバータよりなる回転数調
節手段17′を介して通過可能に接続されると共に、室外
ファン用電動機MFOと、運転用および停止用押ボタンス
イッチBS1およびBS2と、設定温度以上になるとON作動す
る温度調節器18と、更に前記回転数調節手段17′の制御
回路19′とがそれぞれ通電可能に接続されている。そし
て、この制御回路19′は回転数調節手段17′とともに、
蒸発温度制御手段20′（第１図）を構成している。In the electric circuit of FIG. 3, MC is an electric motor for a compressor, which is electrically connected to a power source. In addition, this power supply,
With motor MFI indoor fan is passed connected via the rotational speed adjusting means 17 consisting of inverter ', and a motor MFO outdoor fan, a push-button switch BS 1 and BS 2 for stopping and for operation, set temperature In the above case, the temperature controller 18 which is turned on and the control circuit 19 'of the rotation speed adjusting means 17' are electrically connected to each other. And this control circuit 19 ', together with the rotation speed adjusting means 17',
It constitutes the evaporation temperature control means 20 '(Fig. 1).
すなわち、制御回路19′には前記結露水センサ13が接続
されていて、該結露水センサ13の出力する結露水検知信
号を制御回路19′が入力したときに、制御回路19′から
前記回転数調節手段17に回転数増大指令を出力し、室内
ファン用電動機MFIの回転数を増大させて、蒸発温度を
上昇させるように構成してある。第４図はこの制御回路
19における圧縮機回転数制御の１例をフローシートで更
に具体的に示したもので、ｔは経過時間、t1はあらかじ
め設定したサンプリング間隔時間である。本例では、回
転数調節手段17′から室内ファン用電動機MFIに与える
電圧周波数を例えば第１表に示すように複数のステップ
に区分しておき、例えば５分間程度の所定のサンプリン
グ間隔時間t1毎に結露水センサ13からの結露水検出信号
の有無を調べ、結露水検出信号の有った時には前記周波
数１ステップ増大させ、結露水検出信号の無い時にはこ
のステップ増大指令を出さずに所定運転を続けるように
構成されている。このような制御回路にはマイクロコン
ピュータが使用できる。That is, the dew condensation water sensor 13 is connected to the control circuit 19 ', and when the dew condensation water detection signal output from the dew condensation water sensor 13 is input to the control circuit 19', the rotation speed from the control circuit 19 'is changed. A rotation speed increase command is output to the adjusting means 17 to increase the rotation speed of the indoor fan electric motor MFI to raise the evaporation temperature. Fig. 4 shows this control circuit
One example of the compressor rotation speed control in 19 is shown more specifically with a flow sheet, where t is an elapsed time and t 1 is a preset sampling interval time. In this example, the voltage frequency applied from the rotation speed adjusting means 17 'to the indoor fan electric motor MFI is divided into a plurality of steps as shown in Table 1, for example, and a predetermined sampling interval time t 1 of about 5 minutes. The presence / absence of a dew condensation water detection signal from the dew condensation water sensor 13 is checked every time, the frequency is increased by one step when there is a dew condensation water detection signal, and when there is no dew condensation water detection signal, a predetermined operation is performed without issuing this step increase command. Is configured to continue. A microcomputer can be used for such a control circuit.
なお、第３図において、21は前記運転用押ボタンスイッ
チBS1の操作によりON作動する電磁接触機であって、該
電磁接触機21のON作動により、運転用押ボタンスイッチ
BS1に並列接続した第１接点21aを閉成して運転状態を自
己保持するとともに、室内ファン15用電動機MFIに直列
接続された第２接点21bを閉成して室内ファン15をON作
動させるように構成されている。また、22および23は前
記温度調節器のON作動によりON作動する電磁接触器であ
って、両電磁接触器22および23のON作動により各々の接
点22aおよび23aを閉成して圧縮機用電動器MCおよ室外フ
ァン用電動機MFOをON作動させるようにしている。 In FIG. 3, reference numeral 21 denotes an electromagnetic contactor that is turned on by operating the operation pushbutton switch BS 1 , and when the electromagnetic contactor 21 is turned on, the operation pushbutton switch 21 is turned on.
The first contact 21a connected in parallel to BS 1 is closed to maintain the operating state by itself, and the second contact 21b connected in series to the indoor fan 15 motor MFI is closed to turn on the indoor fan 15. Is configured. Further, 22 and 23 are electromagnetic contactors that are turned on by turning on the temperature controller, and by turning on both electromagnetic contactors 22 and 23, the respective contacts 22a and 23a are closed to drive the electric motor for the compressor. The unit MC and the outdoor fan electric motor MFO are turned on.
以上に説明した空気調和機において、運転用押ボタンス
イッチBS1を操作すると、先ず室内ファン11が作動す
る。この状態で温度調節器18がON作動したときは、圧縮
機１および室外ファン（図示せず）が作動し、第１図に
示す冷媒回路に冷媒が循環し、本体ケーシング７内の空
気通路10に吸込まれた室内空気が蒸発器５を通過すると
きに冷却されて本体ケーシング７外に吹出される。In the air conditioner described above, when the operation push button switch BS 1 is operated, the indoor fan 11 first operates. When the temperature controller 18 is turned on in this state, the compressor 1 and the outdoor fan (not shown) are activated, the refrigerant circulates in the refrigerant circuit shown in FIG. When the indoor air sucked into the evaporator 5 passes through the evaporator 5, it is cooled and blown out of the main body casing 7.
この冷房運転においては、蒸発器５を通過する空気が除
湿されないときは、ドレンパン12に結露水が流下して来
ないために、ドレンパン12の内部は相対湿度100％未満
に維持され、ドレンパン12の内部に配設された結露水セ
ンサ13は結露水検出信号を発信しない。その結果、室内
ファン用電動機MFIは所定運転を続けることになる。In this cooling operation, when the air passing through the evaporator 5 is not dehumidified, the condensed water does not flow down to the drain pan 12, so the inside of the drain pan 12 is maintained at a relative humidity of less than 100%, and the drain pan 12 has a relative humidity of less than 100%. The dew condensation water sensor 13 provided inside does not transmit a dew condensation water detection signal. As a result, the indoor fan electric motor MFI continues to perform the predetermined operation.
一方、この冷房運転により室内温度が低下し、蒸発器５
を通過する空気がその露点温度以下に冷却されるように
なった場合は、この通過空気が結露をおこし除湿され
る。除湿による結露水は水滴となって蒸発器５下部のド
レンパン12に流入し、結露水センサ13はこの結露水の流
入から除湿開始を即座に検知し、結露水検出信号を制御
回路19′に出力する。そして、結露水検出信号を入力し
た制御回路19′は室内ファン用電動機MFIの回転数制御
手段17′に回転数増大指令を発信し、室内ファン11の作
動回転数を増大させる。その結果、蒸発温度が上昇し、
蒸発器２を通過する空気の冷却温度が上昇し、通過空気
の冷却温度がその空気の露点温度を上回った場合は、通
過空気の結露除湿が阻止される。通過空気の冷却温度が
その空気の露点温度を上回わらなかった場合は、上回る
まで前記制御が繰り返され、通過空気の除湿が阻止され
る。除湿が止まるまでの間にドレンパン12に流入した結
露水は全て緊急用貯水タンク14に入り、ドレンパン12の
内部は乾燥して次の除湿に備える。On the other hand, this cooling operation lowers the indoor temperature, and the evaporator 5
When the air passing through is cooled below the dew point temperature, the passing air is condensed and dehumidified. The dew condensation water due to dehumidification flows as water drops into the drain pan 12 at the bottom of the evaporator 5, and the dew condensation water sensor 13 immediately detects the dehumidification start from this inflow of dew condensation water and outputs a dew condensation water detection signal to the control circuit 19 '. To do. Then, the control circuit 19 ', to which the dew condensation water detection signal is input, sends a rotation speed increase command to the rotation speed control means 17' of the indoor fan motor MFI to increase the operating rotation speed of the indoor fan 11. As a result, the evaporation temperature rises,
When the cooling temperature of the air passing through the evaporator 2 rises and the cooling temperature of the passing air exceeds the dew point temperature of the air, dew condensation of the passing air is prevented. When the cooling temperature of the passing air does not exceed the dew point temperature of the air, the control is repeated until it exceeds the dew point temperature of the passing air, and dehumidification of the passing air is blocked. All the dew condensation water that has flowed into the drain pan 12 before the dehumidification stops enters the emergency water storage tank 14, and the inside of the drain pan 12 is dried to prepare for the next dehumidification.
再度、除湿が生じ始めると、結露水センサ13から制御回
路19′に結露水検出信号が発信され、結露水検出信号を
受信した制御回路19′が回転数制御手段17′に回転数増
大指令を発信して除湿が阻止され、これを繰り返すこと
により実質的に除湿を伴うことなく冷房運転が行われ
る。When dehumidification starts again, a dew condensation water detection signal is transmitted from the dew condensation water sensor 13 to the control circuit 19 ', and the control circuit 19' receiving the dew condensation water detection signal issues a rotation speed increase command to the rotation speed control means 17 '. Dehumidification is transmitted to prevent dehumidification, and by repeating this, cooling operation is performed substantially without dehumidification.
室内温度が所定温度以下になると、温度調節器18がOFF
作動して冷房運転を停止し、再び所定温度以上になると
温度調節器18がON作動して冷房運転を行い、これを繰り
返すことにより室内温度をほぼ所定温度に保持する。When the room temperature falls below the specified temperature, the temperature controller 18 turns off.
When the cooling operation is stopped by operating, the temperature controller 18 is turned on again when the temperature becomes equal to or higher than the predetermined temperature, and the cooling operation is performed. By repeating this, the room temperature is maintained at substantially the predetermined temperature.
第５図〜第７図は本発明の第２実施例を示し、第５図は
冷媒回路図、第６図は電気回路図、第７図は圧縮機回転
数の制御フローである。FIGS. 5 to 7 show a second embodiment of the present invention, FIG. 5 is a refrigerant circuit diagram, FIG. 6 is an electric circuit diagram, and FIG. 7 is a control flow of the compressor rotation speed.
本例は、第１実施例で説明したのと同様の結露水センサ
13を制御回路19″に接続する一方、圧縮機用電動機MCお
よび室内ファン用電動機MFIにそれぞれインバータから
なる回転数調節手段17および17′を直列に挿入してお
き、結露水センサ13から制御回路19″に結露水検出信号
が発信されたときに、制御回路19″から回転数調節手段
17および17′にそれぞれ回転数低下指令および回転数増
大指令を発信して、圧縮機１の能力低下と蒸発器５の通
過風量の増大の両面から蒸発温度を上昇させることによ
り、蒸発器通過空気の除湿を阻止するものである。すな
わち、本例においては圧縮機用電動機MCの回転数制御手
段17と、室内ファン用電動器MFIの回転数制御手段17′
と、制御回路19″とで蒸発温度制御手段20″が構成され
るのである。This example is the same condensation water sensor as described in the first example.
While connecting 13 to the control circuit 19 ″, the rotation speed adjusting means 17 and 17 ′ each composed of an inverter are inserted in series in the compressor motor MC and the indoor fan motor MFI, respectively, and the condensation water sensor 13 controls the control circuit. When a dew condensation water detection signal is sent to 19 ", the control circuit 19" turns the rotation speed
17 and 17 ′ are respectively issued with a rotation speed lowering command and a rotation speed increasing command to raise the evaporation temperature from both sides of the decrease in the capacity of the compressor 1 and the increase in the amount of air passing through the evaporator 5. It prevents the dehumidification of. That is, in this example, the rotation speed control means 17 for the compressor electric motor MC and the rotation speed control means 17 'for the indoor fan electric motor MFI are used.
And the control circuit 19 ″ constitutes the evaporation temperature control means 20 ″.
本例によれば、蒸発器５を通過する空気が除湿され始め
ると、この除温が結露水センサ13にて即座に検知され、
その検知信号に呼応して制御回路19″から回転数調節手
段17に回転数低下指令が発信されると共に、回転数調節
手段17′に回転数増大指令が発信され、これにより圧縮
機１の回転数が低下すると共に室内ファン11の回転数が
上昇し、蒸発温度を上昇させる。この動作は蒸発器５を
通過する空気の除湿が止まるまで続き、これにより除湿
が阻止され、実質的に除湿を伴うことなく冷房運転が行
われる。According to this example, when the air passing through the evaporator 5 starts to be dehumidified, this dehumidification is immediately detected by the dew condensation water sensor 13,
In response to the detection signal, the control circuit 19 ″ sends a rotation speed lowering command to the rotation speed adjusting means 17 and also sends a rotation speed increasing command to the rotation speed adjusting means 17 ′, thereby rotating the compressor 1. As the number decreases, the rotation speed of the indoor fan 11 rises, raising the evaporation temperature.This operation continues until the dehumidification of the air passing through the evaporator 5 is stopped, whereby the dehumidification is blocked and the dehumidification is substantially performed. The cooling operation is performed without being accompanied.
回転数調節手段17による圧縮機１の回転数制御は、例え
ば第１実施例において室内ファン11の回転数に対して実
施したのと同様の手法で実施することができる。すなわ
ち、回転数調節手段17から圧縮機用電動機MCに与える電
圧周波数を例えば第２表に示すように複数のステップに
区分しておき、制御回路19″において第７図に示すよう
な圧縮機１の回転数切替制御を行わしめるのである。The rotation speed control of the compressor 1 by the rotation speed adjusting means 17 can be carried out, for example, by the same method as the rotation speed of the indoor fan 11 in the first embodiment. That is, the voltage frequency applied from the rotation speed adjusting means 17 to the compressor motor MC is divided into a plurality of steps as shown in Table 2, for example, and the control circuit 19 ″ controls the compressor 1 as shown in FIG. That is, the rotation speed switching control is performed.
なお、第１実施例と同一部分については同一符号を記し
て詳しい説明を省略する。 The same parts as those in the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted.
本例によれば蒸発温度の上昇により蒸発器５を通過する
空気の除湿が即座に止まり、通過空気が実質的に除湿さ
れることなく冷却されるばかりでなく、圧縮機１および
室内ファン11の作動回転数の調節範囲が、これらを個々
に回転数制御する場合に比べて狭くできるでので、その
分、圧縮機１および室内ファン11の規模を縮小できる利
点がある。According to this example, the dehumidification of the air passing through the evaporator 5 is immediately stopped due to the rise of the evaporation temperature, and the passing air is not substantially dehumidified and cooled, but also the compressor 1 and the indoor fan 11 are cooled. The adjustment range of the operating speed can be narrowed compared to the case where the speeds of these are individually controlled, so that there is an advantage that the scale of the compressor 1 and the indoor fan 11 can be reduced accordingly.
以上の説明から明らかなように、本発明の空気調和機は
冷房運転中に蒸発温度制御により、蒸発温度を除湿の生
じない範囲内に維持管理するようにしたので、蒸発器を
通過する空気が除湿されることなく冷却され、絶対湿度
が安定化することにより加熱器を不用ならしめ、これに
より設備構造が簡略化され、設備コストの低減を図ると
ともに、加湿に伴うエネルギー損失がなくなり、運転コ
ストの面でも著しく有利となる。更に、除湿そのものを
行わないので、加湿器を備えた空気調和機と比べて絶対
温度の安定性が高く、またキャリーオーバー現象の危険
もなく、その上、加湿に伴う冷房運転時間の制限がな
く、冷房時間が温度変化のみから決定されることになっ
て、温度制御性が向上するという大きな効果をも有する
ものである。As is clear from the above description, the air conditioner of the present invention is configured to maintain the evaporation temperature within the range where dehumidification does not occur by controlling the evaporation temperature during the cooling operation, so that the air passing through the evaporator is It is cooled without being dehumidified, and the absolute humidity is stabilized, making the heater unnecessary, which simplifies the facility structure and reduces the facility cost. In terms of, it will be extremely advantageous. Furthermore, since dehumidification itself is not performed, the stability of absolute temperature is higher than that of an air conditioner equipped with a humidifier, there is no risk of carryover phenomenon, and there is no restriction on the cooling operation time associated with humidification. The cooling time is determined only by the temperature change, which has a great effect of improving the temperature controllability.
第１図〜第４図および第５図〜第７図はそれぞれ本発明
の実施例を示し、第１図および第５図は冷媒回路図、第
２図は室内ユニットの模式断面図、第３図および第６図
は電気回路図、第４図および第７図は制御フロー図であ
る。 図中、1:圧縮機、2:凝縮器、4:膨張機構、5:蒸発器、7:
本体ケーシング、8:吸込口、9:吹出口、10:空気通路、1
1:室内ファン、12:ドレンパン、13:結露水センサ、17,1
7′：回転数調節手段、19′,19″：制御回路、20′,2
0″：蒸発温度制御手段。1 to 4 and 5 to 7 show an embodiment of the present invention, respectively, FIGS. 1 and 5 are refrigerant circuit diagrams, FIG. 2 is a schematic sectional view of an indoor unit, and FIG. 6 and 6 are electric circuit diagrams, and FIGS. 4 and 7 are control flow diagrams. In the figure, 1: compressor, 2: condenser, 4: expansion mechanism, 5: evaporator, 7:
Main body casing, 8: Suction port, 9: Air outlet, 10: Air passage, 1
1: Indoor fan, 12: Drain pan, 13: Condensation water sensor, 17,1
7 ': rotation speed adjusting means, 19', 19 ": control circuit, 20 ', 2
0 ″: Evaporation temperature control means.
Claims (2)
（４）および蒸発器（５）を有する冷媒回路を備え、本
体ケーシング（７）内の吸込口（８）から吹出口（９）
に至る空気通路（10）に前記蒸発器（５）および室内フ
ァン（11）を備えてなる空気調和機において、前記蒸発
器（５）の下部乃至下方に構成される結露水通路と、該
結露水通路に配設され配設通路中の結露水を検出して発
信する結露水センサ（13）と、該結露水センサ（13）の
出力する結露水検出信号を受けたときに蒸発温度を上昇
させる蒸発温度制御手段とを具備し、蒸発温度制御手段
は室内ファン（11）の回転数調節手段（17′）と、結露
水センサ（13）の出力する結露水検知信号を受けたとき
に、前記回転数調節手段（17′）に回転数上昇指令を発
信する制御回路（19′）とからなることを特徴とする空
気調和機。1. A refrigerant circuit having a compressor (1), a condenser (2), an expansion mechanism (4) and an evaporator (5), which is provided with a suction port (8) in a main casing (7). (9)
In an air conditioner comprising the evaporator (5) and an indoor fan (11) in an air passage (10) leading to the above, a dew condensation water passage formed below or below the evaporator (5) and the dew condensation. Condensation water sensor (13) which is installed in the water passage and detects and transmits the condensation water in the installation passage, and the evaporation temperature rises when the condensation water detection signal output from the condensation water sensor (13) is received. And an evaporation temperature control means for controlling the rotation speed adjusting means (17 ') of the indoor fan (11) and a condensation water detection signal output from the condensation water sensor (13). An air conditioner comprising a control circuit (19 ') for transmitting a rotation speed increase command to the rotation speed adjusting means (17').
（４）および蒸発器（５）を有する冷媒回路を備え、本
体ケーシング（７）内の吸込口（８）から吹出口（９）
に至る空気通路（10）に前記蒸発器（５）および室内フ
ァン（11）を備えてなる空気調和機において、前記蒸発
器（５）の下部乃至下方に構成される結露水通路と、該
結露水通路に配設され配設通路中の結露水を検出して発
信する結露水センサ（13）と、該結露水センサ（13）の
出力する結露水検出信号を受けたときに蒸発温度を上昇
させる蒸発温度制御手段とを具備し、蒸発温度制御手段
は圧縮機（１）および室内ファン（11）の各回転数調節
手段（17）および（17′）と、結露水センサ（13）の出
力する結露水検知信号を受けたときに、前記各回転数調
節手段（17）および（17′）にそれぞれ回転数低下指令
および回転数上昇指令を発信する制御回路（19″）とか
らなることを特徴とする空気調和機。2. A refrigerant circuit having a compressor (1), a condenser (2), an expansion mechanism (4) and an evaporator (5), which is provided from a suction port (8) in a main body casing (7). (9)
In an air conditioner comprising the evaporator (5) and an indoor fan (11) in an air passage (10) leading to the above, a dew condensation water passage formed below or below the evaporator (5) and the dew condensation. Condensation water sensor (13) which is installed in the water passage and detects and transmits the condensation water in the installation passage, and the evaporation temperature rises when the condensation water detection signal output from the condensation water sensor (13) is received. And an evaporation temperature control means for controlling the rotation speed adjusting means (17) and (17 ') of the compressor (1) and the indoor fan (11), and an output of the dew condensation water sensor (13). And a control circuit (19 ″) for transmitting a rotation speed lowering command and a rotation speed increasing command to the rotation speed adjusting means (17) and (17 ′), respectively. A characteristic air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162691A JPH0792259B2 (en) | 1986-07-10 | 1986-07-10 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162691A JPH0792259B2 (en) | 1986-07-10 | 1986-07-10 | Air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6317337A JPS6317337A (en) | 1988-01-25 |
| JPH0792259B2 true JPH0792259B2 (en) | 1995-10-09 |
Family
ID=15759468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61162691A Expired - Lifetime JPH0792259B2 (en) | 1986-07-10 | 1986-07-10 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0792259B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04332331A (en) * | 1991-01-14 | 1992-11-19 | Toppan Printing Co Ltd | Humidity control method and air-conditioner |
| JP3579177B2 (en) * | 1996-03-28 | 2004-10-20 | 三菱電機株式会社 | Separable air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62147862U (en) * | 1986-03-12 | 1987-09-18 |
-
1986
- 1986-07-10 JP JP61162691A patent/JPH0792259B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6317337A (en) | 1988-01-25 |
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