JP2005282894A - Dehumidifier - Google Patents

Dehumidifier Download PDF

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JP2005282894A
JP2005282894A JP2004094843A JP2004094843A JP2005282894A JP 2005282894 A JP2005282894 A JP 2005282894A JP 2004094843 A JP2004094843 A JP 2004094843A JP 2004094843 A JP2004094843 A JP 2004094843A JP 2005282894 A JP2005282894 A JP 2005282894A
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evaporator
temperature
defrosting
dehumidifier
expansion valve
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Yasuhiro Takakusaki
康広 高草木
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifier capable of judging the frosting quantity on an evaporator with high accuracy and enlarging a dehumidifying operation range. <P>SOLUTION: This dehumidifier comprises the evaporator 7 mounted on a part where the indoor air is sucked, in a dehumidifier main body 1, an electronic expansion valve 16 for adjusting a flow rate of refrigerant to the evaporator, an evaporator temperature sensor 10 for detecting a temperature of the evaporator 7, and a controller 15 for switching and controlling the dehumidifying operation performing the dehumidification by cooling the air sucked from the evaporator 7 and condensing the moisture vapor included in the sucked air, and the defrosting operation for removing the frost attached to the evaporator 7 on the basis of a detection temperature of the evaporator temperature sensor 10, and changing an opening of the electronic expansion valve 16 in the dehumidifying operation in accordance with a time required in the defrosting operation. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、空気中の水分を除湿する除湿機に関するものである。   The present invention relates to a dehumidifier that dehumidifies moisture in the air.

従来の除湿機には、湿度センサによりその時の吸込み空気の湿度を測定することにより着霜量を判断し、湿度が高く着霜量が多いときは、早めに除霜に入るようにするとともに、湿度が低く着霜量が少ないときは、遅く除霜に入るようにし、着霜温度の検知時点から除霜開始時点までの時間を湿度に応じて変化させる制御を行っているものがある。（例えば、特許文献１参照）
また、従来の除湿機には、静圧センサを設けて、静圧センサで検知する蒸発器の圧損を基に、蒸発器への着霜量を判断しているものがある。（例えば、特許文献２参照） The conventional dehumidifier determines the amount of frost formation by measuring the humidity of the suction air at that time with a humidity sensor, and when the humidity is high and the amount of frost formation is large, the defroster is started as soon as possible. When the humidity is low and the amount of frost formation is small, defrosting is started late, and there is a control that changes the time from the detection time of the frost formation time to the start time of the defrosting according to the humidity. (For example, see Patent Document 1)
Some conventional dehumidifiers are provided with a static pressure sensor to determine the amount of frost formed on the evaporator based on the pressure loss of the evaporator detected by the static pressure sensor. (For example, see Patent Document 2)

特開平７−８３４６３号公報（第６頁、第４図）JP-A-7-83463 (6th page, FIG. 4) 特開平１１−４４４４８号公報（第６頁、第２図）Japanese Patent Laid-Open No. 11-44448 (page 6, FIG. 2)

従来の除湿機(特許文献１)では、湿度センサによりその時の吸入空気の湿度を検知して、蒸発器の着霜量を判断できるように構成しているが、室内空気の湿度は常に変化するので、制御系にかなりの工夫が必要である。蒸発器の蒸発温度、フィンピッチによっては、吸入空気の温度や湿度が一定であっても着霜量は異なるものであるから、吸入空気の湿度により蒸発器への着霜量を判断することは精度の良い制御とは言えない。
また、静圧センサを設けて着霜量を判断する除湿機(特許文献２)では、フィンヘの着霜は一様でないこと、霜だけでなく、フィンに付着した水滴（結露水）によっても蒸発器の圧損は変化するものであるから、圧力損失の変化で着霜量を判断することは難しい。 The conventional dehumidifier (Patent Document 1) is configured so that the humidity of the intake air at that time can be detected by a humidity sensor and the amount of frost formation on the evaporator can be determined. However, the humidity of the indoor air constantly changes. Therefore, considerable ingenuity is required for the control system. Depending on the evaporation temperature and fin pitch of the evaporator, the amount of frost formation varies even if the temperature and humidity of the intake air are constant. Therefore, it is not possible to judge the amount of frost formation on the evaporator based on the humidity of the intake air. It cannot be said that the control is accurate.
Further, in a dehumidifier (Patent Document 2) that determines the amount of frost formation by providing a static pressure sensor, the frost formation on the fins is not uniform, and not only frost but also water droplets (condensation water) attached to the fins evaporate. Since the pressure loss of the vessel changes, it is difficult to determine the amount of frost formation based on the change in pressure loss.

本発明は上記の課題を解決するためになされたもので、蒸発器への着霜量を精度よく判断することができ、除湿運転範囲の拡大を図ることができる除湿機を提供することを目的とする。   The present invention has been made to solve the above-described problem, and an object thereof is to provide a dehumidifier that can accurately determine the amount of frost formation on the evaporator and can expand the dehumidifying operation range. And

本発明にかかる除湿機は、除湿機本体内で室内空気が吸入される部位に設けられた蒸発器と、前記蒸発器への冷媒流量を調整する電子膨張弁と、前記蒸発器の温度を検知する蒸発器温度センサと、前記蒸発器により吸い込む空気を冷却して吸入空気中に含まれる水蒸気を凝縮させることにより除湿する除湿運転と前記蒸発器に付着した霜を除去する除霜運転とを前記蒸発器温度センサの検出温度に基づいて切り換え制御し、かつ前記除霜運転時の所要時間に応じて除湿運転時の前記電子膨張弁の開度を変化させる制御装置とを備えたものである。   The dehumidifier according to the present invention includes an evaporator provided at a site where indoor air is sucked in the dehumidifier body, an electronic expansion valve that adjusts a flow rate of refrigerant to the evaporator, and a temperature of the evaporator. An evaporator temperature sensor, a dehumidifying operation for dehumidifying by cooling the air sucked by the evaporator and condensing water vapor contained in the intake air, and a defrosting operation for removing frost adhering to the evaporator And a control device that performs switching control based on the temperature detected by the evaporator temperature sensor and changes the opening of the electronic expansion valve during the dehumidifying operation according to the required time during the defrosting operation.

本発明にかかる除湿機によれば、除霜運転時の所要時間に応じて蒸発器の着霜量を判断するので、蒸発器の着霜量を精度よく判断でき、また、精度のよい蒸発器の着霜量の判断に基づいて次の除湿運転時の電子膨張弁の開度を変化させるので、除湿運転範囲の拡大を図ることができる。   According to the dehumidifier according to the present invention, since the frost formation amount of the evaporator is determined according to the time required for the defrosting operation, the frost formation amount of the evaporator can be accurately determined, and the accurate evaporator Since the opening degree of the electronic expansion valve during the next dehumidifying operation is changed based on the determination of the amount of frost formation, the dehumidifying operation range can be expanded.

実施の形態１．
図１は本発明の実施の形態１にかかる除湿機の構成図である。
図１において、除湿機本体１は、外装部品として前部を囲う前部ケース２と、後部を囲う後部ケース３とで構成される。後部ケース３には後面に位置して吸込口４と、上面に位置して吹出口５とが設けられている。この除湿機本体１内下部には除湿水を溜める排水タンク６と、冷媒を圧縮する圧縮機１２とが設けられ、除湿機本体１内上部には、蒸発器７、凝縮器８、及び室内空気を蒸発器７から凝縮器８に導く送風機９とが設けられている。そして、前記蒸発器７及び凝縮器８によって蒸発凝縮部が構成されており、前記蒸発器７は冷媒と室内空気との間で熱交換を行い、前記凝縮器８は蒸発器７により熱交換された空気と冷媒との間で熱交換を行うようになっている。 Embodiment 1 FIG.
FIG. 1 is a configuration diagram of a dehumidifier according to Embodiment 1 of the present invention.
In FIG. 1, the dehumidifier body 1 includes a front case 2 that surrounds the front as exterior parts, and a rear case 3 that surrounds the rear. The rear case 3 is provided with a suction port 4 located on the rear surface and an air outlet 5 located on the upper surface. A drain tank 6 for storing dehumidified water and a compressor 12 for compressing refrigerant are provided in the lower part of the dehumidifier body 1, and an evaporator 7, a condenser 8, and room air are provided in the upper part of the dehumidifier body 1. And a blower 9 that guides the air from the evaporator 7 to the condenser 8. The evaporator 7 and the condenser 8 constitute an evaporating and condensing part. The evaporator 7 exchanges heat between the refrigerant and room air, and the condenser 8 exchanges heat with the evaporator 7. Heat exchange is performed between the air and the refrigerant.

また、前記蒸発器７のほぼ中間部に位置して蒸発器温度センサ１０が、また吸込口４の近傍には室内空気の温湿度を検出する温湿度センサ１１が配置されている。   In addition, an evaporator temperature sensor 10 is disposed at a substantially middle portion of the evaporator 7, and a temperature / humidity sensor 11 for detecting the temperature / humidity of room air is disposed in the vicinity of the suction port 4.

図２は本発明の実施の形態１を示す除湿機の冷媒回路図である。
図２において、圧縮機１２、凝縮器８、ドライヤー１７、電子膨張弁１６、及び蒸発器７が順次結合して冷媒回路を構成している。そして、バイパス配管１３は、前記圧縮機１２の吐出側と蒸発器７の入口側との間を接続して、前記凝縮器８、ドライヤー１７、及び電子膨張弁１６をバイパスしている。このバイパス配管１３には電磁弁１４が配設されている。凝縮器８と電子膨張弁１６の間に設けられているドライヤ−１７は、回路中の水分を吸着する機能を備えている。前記温湿度センサ１１で検出した室内空気の温湿度と前記蒸発器温度センサ１０で検出した温度は除湿機の運転を制御する制御装置１５に入力され、該制御装置１５によって圧縮機１２、電磁弁１４、電子膨張弁１６は制御されるように構成されている。 FIG. 2 is a refrigerant circuit diagram of the dehumidifier showing Embodiment 1 of the present invention.
In FIG. 2, a compressor 12, a condenser 8, a dryer 17, an electronic expansion valve 16, and an evaporator 7 are sequentially connected to constitute a refrigerant circuit. The bypass pipe 13 connects the discharge side of the compressor 12 and the inlet side of the evaporator 7 to bypass the condenser 8, the dryer 17, and the electronic expansion valve 16. The bypass pipe 13 is provided with an electromagnetic valve 14. A dryer 17 provided between the condenser 8 and the electronic expansion valve 16 has a function of adsorbing moisture in the circuit. The temperature and humidity of the indoor air detected by the temperature / humidity sensor 11 and the temperature detected by the evaporator temperature sensor 10 are input to a control device 15 that controls the operation of the dehumidifier. 14. The electronic expansion valve 16 is configured to be controlled.

次に、上記実施の形態１の構成にからなる除湿機の動作について説明する。
まず、除湿運転では、冷媒は圧縮機１２より凝縮器８に送られ、凝縮して液化した後に電子膨張弁１６によって減圧され、蒸発器７で蒸発し、ガス冷媒となって圧縮機１２に戻る。通常は、矢印イに示す経路で冷媒が循環しているが、蒸発器温度センサ１０が蒸発器７の着霜温度を検出した場合には、その信号が制御装置１５に入力され、制御装置１５は所定の時間を経てから送風機９を停止させ、さらに電磁弁１４を開いて除霜運転を開始する。除霜運転では、圧縮機１２によって圧縮されてホットガスとなった冷媒が、矢印ロに示す経路で、バイパス管１３を経て蒸発器７へと導かれ、蒸発器７に付着した霜を融解除去する。除霜によって生じた水は、排水タンク６に集水される。 Next, the operation of the dehumidifier having the configuration of the first embodiment will be described.
First, in the dehumidifying operation, the refrigerant is sent from the compressor 12 to the condenser 8, condensed and liquefied, then depressurized by the electronic expansion valve 16, evaporated by the evaporator 7, and returned to the compressor 12 as a gas refrigerant. . Normally, the refrigerant circulates along the path indicated by the arrow A. However, when the evaporator temperature sensor 10 detects the frosting temperature of the evaporator 7, the signal is input to the control device 15 and the control device 15 Stops the blower 9 after a predetermined time, and further opens the electromagnetic valve 14 to start the defrosting operation. In the defrosting operation, the refrigerant compressed by the compressor 12 to become hot gas is guided to the evaporator 7 through the bypass pipe 13 along the path indicated by arrow B, and the frost adhering to the evaporator 7 is thawed and removed. To do. The water generated by the defrosting is collected in the drain tank 6.

図３は除湿運転と除霜運転における蒸発器センサ温度の変化を示すタイムチャ−トであり、図３（ａ）は室内空気が低温時の場合のタイムチャートである。図３中、Ａ部は除霜運転時の温度の変化を示し、Ｂ部は除湿運転時の温度変化を示している。
除湿運転Ｂにおいて、蒸発器７の温度が低下するにつれて、蒸発器温度センサ１０の検出温度も低下する。蒸発器温度センサ１０の検出温度が蒸発器７への着霜検出温度として設定している０℃以下になると、吸い込み空気は蒸発器７に霜となって付着してくる。この状態が続くと、霜の着霜量が徐々に増加し、蒸発器７のフィンが目詰まりしたりするため、蒸発器温度センサ１０が蒸発器７の着霜温度を検出した後は、除湿運転の基準時間Ｔ１が経過すると、制御装置１５が送風機９を停止させ、同時に電磁弁１４を開いて除霜運転Ａを開始させる。 FIG. 3 is a time chart showing changes in the evaporator sensor temperature in the dehumidifying operation and the defrosting operation, and FIG. 3A is a time chart when the room air is at a low temperature. In FIG. 3, part A shows the temperature change during the defrosting operation, and part B shows the temperature change during the dehumidifying operation.
In the dehumidifying operation B, as the temperature of the evaporator 7 decreases, the detected temperature of the evaporator temperature sensor 10 also decreases. When the temperature detected by the evaporator temperature sensor 10 is 0 ° C. or less, which is set as the temperature for detecting frost formation on the evaporator 7, the sucked air adheres to the evaporator 7 as frost. If this state continues, the amount of frost formation gradually increases and the fins of the evaporator 7 are clogged. Therefore, after the evaporator temperature sensor 10 detects the frost formation temperature of the evaporator 7, dehumidification is performed. When the reference time T1 of operation elapses, the control device 15 stops the blower 9 and simultaneously opens the electromagnetic valve 14 to start the defrosting operation A.

除霜運転Ａ中は、圧縮機１２から吐出されたホットガスが、矢印ロに示すように、バイパス配管１３から電磁弁１４を介して蒸発器７に導かれ、これにより、蒸発器７の温度が上昇して蒸発器７に着霜した霜は徐々に融解し始める。それと同時に、蒸発器温度センサ１０の検出温度も上昇していき、蒸発器温度センサ１０が除霜終了温度を検出すると、制御装置１５が電磁弁１４を閉じ、送風機９を始動させて除霜運転Ａを終了させ、除湿運転Ｂに戻る。以後は、そのサイクルが繰り返される。   During the defrosting operation A, the hot gas discharged from the compressor 12 is led from the bypass pipe 13 to the evaporator 7 via the electromagnetic valve 14 as shown by the arrow B, and thereby the temperature of the evaporator 7 is increased. As the temperature rises, the frost that forms on the evaporator 7 begins to melt gradually. At the same time, the temperature detected by the evaporator temperature sensor 10 increases, and when the evaporator temperature sensor 10 detects the defrosting end temperature, the control device 15 closes the electromagnetic valve 14 and starts the blower 9 to perform the defrosting operation. End A and return to dehumidifying operation B. Thereafter, the cycle is repeated.

除霜運転Ａ中の蒸発器７の温度変化において、蒸発器７への着霜量が多い場合は、蒸発器温度センサ１０が除霜終了温度を検出するまでの所要時間が長く、また、着霜量が少ない場合、除霜終了温度を検知するまでの所要時間は短い。なお、本実施の形態１では、蒸発器７への着霜検出温度を０℃以下として設定した場合を例に説明したが、上述した通り、着霜量は異なるものであり、蒸発器７の温度が０℃近辺であっても必ずしも着霜しているとは限らない。この場合も、除霜終了温度を検出するまでの所要時間は短くなる。   When the amount of frost on the evaporator 7 is large in the temperature change of the evaporator 7 during the defrosting operation A, the time required until the evaporator temperature sensor 10 detects the defrosting end temperature is long, and When the amount of frost is small, the time required to detect the defrosting end temperature is short. In addition, in this Embodiment 1, although the case where the frost formation detection temperature to the evaporator 7 was set as 0 degrees C or less was demonstrated as an example, as above-mentioned, the amount of frost formation differs, and the evaporator 7 Even if the temperature is around 0 ° C., frost formation is not always performed. Also in this case, the time required until the defrosting end temperature is detected is shortened.

本実施の形態１では、除霜運転Ａを行う際には、除霜開始から蒸発器温度センサ１０により除霜終了温度を検出するまでの除霜基準時間Ｔａを予め設定しておき、この除霜基準時間Ｔａと実際に要した除霜運転時間とを比較することで着霜量を判断し、次の除湿運転時の電子膨張弁１６の開度を変化させている。   In the first embodiment, when performing the defrosting operation A, a defrost reference time Ta from the start of defrosting until the defrosting end temperature is detected by the evaporator temperature sensor 10 is set in advance, and this removal is performed. The amount of frost formation is determined by comparing the frost reference time Ta with the actual defrosting operation time, and the opening degree of the electronic expansion valve 16 during the next dehumidifying operation is changed.

上記のように構成した本実施の形態１の作用を、図３（ｂ）の除湿運転と除霜運転における蒸発器温度センサの検出温度の変化を示すタイムチャートを用いて説明する。
除霜運転時間Ｔｂが除霜基準時間Ｔａより短くなる時は、蒸発器７の温度がそれ程低くない、あるいは除霜運転中の蒸発器７の温度上昇が早い状態であると言える。よって、除湿運転時の蒸発器７への着霜量は少ない、また、着霜があったとしても短時間の除霜運転で霜を除去できている状態であると判断できる。このような状況下では、除湿運転時の電子膨張弁１６の開度を小さくして、蒸発器７の温度を低くすることにより、次の除湿運転時は、適正な着霜量を得る除湿運転が可能となり、除湿運転範囲の拡大が図れる。 The effect | action of this Embodiment 1 comprised as mentioned above is demonstrated using the time chart which shows the change of the detected temperature of the evaporator temperature sensor in the dehumidification operation of FIG.3 (b), and a defrost operation.
When the defrosting operation time Tb is shorter than the defrosting reference time Ta, it can be said that the temperature of the evaporator 7 is not so low, or the temperature of the evaporator 7 during the defrosting operation is rapidly rising. Therefore, it can be determined that the amount of frost on the evaporator 7 during the dehumidifying operation is small, and even if frost is formed, the frost can be removed by a short defrosting operation. Under such circumstances, the opening degree of the electronic expansion valve 16 during the dehumidifying operation is reduced and the temperature of the evaporator 7 is lowered, so that the dehumidifying operation for obtaining an appropriate amount of frost formation during the next dehumidifying operation. And the dehumidifying operation range can be expanded.

すなわち、除霜運転時間Ｔｂが図３（ａ）の除霜基準時間Ｔａより短い場合（Ｔｂ＜Ｔａ）は、図３(ｂ)に示すように、蒸発器温度センサ１０が除霜終了温度を検出するまでの時間デ−タである除霜運転時間Ｔｂに基づき、制御装置１５は蒸発器７への着霜量が少ないと判断する。この場合は、電子膨張弁１６の開度を小さくして除湿運転を行う。   That is, when the defrosting operation time Tb is shorter than the defrosting reference time Ta in FIG. 3A (Tb <Ta), the evaporator temperature sensor 10 determines the defrosting end temperature as shown in FIG. Based on the defrosting operation time Tb, which is time data until detection, the control device 15 determines that the amount of frost on the evaporator 7 is small. In this case, the opening degree of the electronic expansion valve 16 is reduced to perform the dehumidifying operation.

除霜運転時間Ｔｂが除霜基準時間Ｔａより長くなる時は、蒸発器７の温度が低くすぎる、あるいは除霜運転中の蒸発器７の温度上昇が遅い状態であると言える。よって、除湿運転時の蒸発器７への着霜量が多すぎる、また、除霜運転で霜を除去するのに時間を要している状態であると判断できる。このような状況下では、除湿運転時の電子膨張弁１６の開度を大きくして、蒸発器７の温度を高くすることにより、次の除湿運転時は能力ダウンを行い、過度な着霜を防ぐことができ、除湿運転範囲の拡大が図れる。   When the defrosting operation time Tb is longer than the defrosting reference time Ta, it can be said that the temperature of the evaporator 7 is too low, or the temperature rise of the evaporator 7 during the defrosting operation is slow. Therefore, it can be determined that the amount of frost on the evaporator 7 during the dehumidifying operation is too large, and that it takes time to remove the frost during the defrosting operation. Under such circumstances, the opening degree of the electronic expansion valve 16 during the dehumidifying operation is increased and the temperature of the evaporator 7 is increased, whereby the capacity is reduced during the next dehumidifying operation and excessive frost formation is caused. Can be prevented and the dehumidifying operation range can be expanded.

すなわち、除霜運転時間Ｔｃが図３（ａ）の除霜基準時間Ｔａより長い場合（Ｔｃ＞Ｔａ）は、図３(ｃ)に示すように、蒸発器温度センサ１０が除霜終了温度を検出するまでの時間デ−タである除霜運転時間Ｔｃに基づき、制御装置１５は蒸発器７への着霜量が多いと判断する。この場合は、電子膨張弁１６の開度を大きくして除湿運転を行う。   That is, when the defrosting operation time Tc is longer than the defrosting reference time Ta in FIG. 3A (Tc> Ta), the evaporator temperature sensor 10 determines the defrosting end temperature as shown in FIG. Based on the defrosting operation time Tc, which is time data until detection, the control device 15 determines that the amount of frost formation on the evaporator 7 is large. In this case, the opening degree of the electronic expansion valve 16 is increased to perform the dehumidifying operation.

以上の説明から明らかなように、上記実施の形態１の構成によれば、除霜開始から蒸発器温度センサ１０が除霜終了温度を検出するまでの所要時間に応じて着霜量を判断するので、従来の吸入空気の湿度や静圧センサにより着霜量を判断する場合に比べて蒸発器７への着霜量を精度よく判断することができる。また、上記の構成であれば、着霜量の判断は従来から用いられている蒸発器温度センサ１０を用いて、かつ従来の位置のままで実現することができるので、コストアップもまったく伴わない。さらに、除霜開始から前記蒸発器温度センサ１０が除霜終了温度を検出するまでの所要時間に応じて次の除湿運転時の電子膨張弁１６の開度を変化させるので、除湿運転範囲の拡大を図ることができる。   As is apparent from the above description, according to the configuration of the first embodiment, the amount of frost formation is determined according to the time required from the start of defrosting until the evaporator temperature sensor 10 detects the defrosting end temperature. Therefore, the amount of frost formation on the evaporator 7 can be accurately determined as compared with the conventional case where the amount of frost formation is determined by the humidity or static pressure sensor of the intake air. Moreover, if it is said structure, since determination of the amount of frost formation can be implement | achieved using the evaporator temperature sensor 10 conventionally used, and a conventional position, it does not accompany a cost increase at all. . Furthermore, since the opening degree of the electronic expansion valve 16 during the next dehumidifying operation is changed according to the time required from the start of defrosting until the evaporator temperature sensor 10 detects the defrosting end temperature, the dehumidifying operation range is expanded. Can be achieved.

本発明の実施の形態１にかかる除湿機の構成図である。It is a block diagram of the dehumidifier concerning Embodiment 1 of this invention. 本発明の実施の形態１にかかる除湿機の冷媒回路図である。It is a refrigerant circuit figure of the dehumidifier concerning Embodiment 1 of this invention. 本発明の実施の形態１にかかる除湿機の除湿運転と除霜運転における蒸発器センサ温度の変化を示すタイムチャ−トである。It is a time chart which shows the change of the evaporator sensor temperature in the dehumidification operation and defrost operation of the dehumidifier concerning Embodiment 1 of this invention.

符号の説明Explanation of symbols

１ 除湿機本体、７ 蒸発器、８ 凝縮器、９ 送風機、１０ 蒸発器温度センサ、１１ 温湿度センサ、１２ 圧縮機、１３ バイパス配管、１４ 電磁弁、１５ 制御装置、１６電子膨張弁。   DESCRIPTION OF SYMBOLS 1 Dehumidifier main body, 7 Evaporator, 8 Condenser, 9 Blower, 10 Evaporator temperature sensor, 11 Temperature / humidity sensor, 12 Compressor, 13 Bypass piping, 14 Solenoid valve, 15 Control apparatus, 16 Electronic expansion valve.

Claims (3)

除湿機本体内で室内空気が吸入される部位に設けられた蒸発器と、前記蒸発器への冷媒流量を調整する電子膨張弁と、前記蒸発器の温度を検知する蒸発器温度センサと、前記蒸発器により吸い込む空気を冷却して吸入空気中に含まれる水蒸気を凝縮させることにより除湿する除湿運転と前記蒸発器に付着した霜を除去する除霜運転とを前記蒸発器温度センサの検出温度に基づいて切り換え制御し、かつ前記除霜運転時の所要時間に応じて除湿運転時の前記電子膨張弁の開度を変化させる制御装置とを備えたことを特徴とする除湿機。 An evaporator provided at a site where indoor air is sucked in the dehumidifier body, an electronic expansion valve for adjusting a refrigerant flow rate to the evaporator, an evaporator temperature sensor for detecting the temperature of the evaporator, The detected temperature of the evaporator temperature sensor includes a dehumidifying operation for dehumidifying by cooling the air sucked by the evaporator and condensing water vapor contained in the intake air, and a defrosting operation for removing frost adhering to the evaporator. A dehumidifier comprising: a control device that performs switching control based on the time and changes the opening of the electronic expansion valve during the dehumidifying operation according to the time required for the defrosting operation. 前記制御装置は、除霜運転時の所要時間が除霜基準時間より短い場合は、除湿運転の前記電子膨張弁の開度を小さく制御することを特徴とする請求項１記載の除湿機。 2. The dehumidifier according to claim 1, wherein when the time required for the defrosting operation is shorter than the defrosting reference time, the control device controls the opening of the electronic expansion valve in the dehumidifying operation to be small. 前記制御装置は、除霜運転時の所要時間が除霜基準時間より長い場合は、除湿運転時に前記電子膨張弁の開度を大きく制御することを特徴とする請求項１記載の除湿機。 2. The dehumidifier according to claim 1, wherein when the time required for the defrosting operation is longer than the defrosting reference time, the control device largely controls the opening of the electronic expansion valve during the dehumidifying operation.
JP2004094843A 2004-03-29 2004-03-29 Dehumidifier Pending JP2005282894A (en)

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JP2007212115A (en) * 2006-01-13 2007-08-23 Mitsubishi Electric Corp Dehumidification machine and its control method
JP2009068729A (en) * 2007-09-11 2009-04-02 Toyotomi Co Ltd Control method of air conditioner depending on detection of heat exchanger temperature
JP2009174800A (en) * 2008-01-25 2009-08-06 Mitsubishi Electric Corp Reheating dehumidifier and air conditioner
JP2017064592A (en) * 2015-09-29 2017-04-06 パナソニックＩｐマネジメント株式会社 Dehumidification apparatus
CN108800355A (en) * 2018-06-25 2018-11-13 袁军 A kind of air conditioning method and system
CN110873435A (en) * 2018-08-31 2020-03-10 青岛海尔空调电子有限公司 Anti-frosting control method for indoor unit of air conditioner
CN110986272A (en) * 2019-10-28 2020-04-10 青岛海尔空调器有限总公司 Air conditioner self-cleaning control method and device and air conditioner
CN111306658A (en) * 2020-03-06 2020-06-19 宁波德业科技股份有限公司 Defrosting method of dehumidifier

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Publication number Priority date Publication date Assignee Title
JP2007212115A (en) * 2006-01-13 2007-08-23 Mitsubishi Electric Corp Dehumidification machine and its control method
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CN110873435B (en) * 2018-08-31 2021-12-28 青岛海尔空调电子有限公司 Anti-frosting control method for indoor unit of air conditioner
CN110986272A (en) * 2019-10-28 2020-04-10 青岛海尔空调器有限总公司 Air conditioner self-cleaning control method and device and air conditioner
CN110986272B (en) * 2019-10-28 2021-10-29 青岛海尔空调器有限总公司 Air conditioner self-cleaning control method and device and air conditioner
CN111306658A (en) * 2020-03-06 2020-06-19 宁波德业科技股份有限公司 Defrosting method of dehumidifier

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