JP2021183027A - Clothes dryer - Google Patents

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JP2021183027A
JP2021183027A JP2020089097A JP2020089097A JP2021183027A JP 2021183027 A JP2021183027 A JP 2021183027A JP 2020089097 A JP2020089097 A JP 2020089097A JP 2020089097 A JP2020089097 A JP 2020089097A JP 2021183027 A JP2021183027 A JP 2021183027A
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clothes
drying
drum
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drying operation
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浩二 曽我
Koji Soga
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Rinnai Corp
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Abstract

To provide a clothes dryer that can perform optimal drying even when clothes are almost dried, and can prevent waste of energy in drying operation and damage to the clothes.SOLUTION: The clothes dryer 1 executes a dedicated course (S12) in which a drying operation time is shorter than the minimum operation time of a normal course when a drying degree detected by drying degree detection means 21 is higher than a predetermined drying degree (S7) during a trial operation in which a drum 2 is rotated to check the operation before starting the drying operation. In the dedicated course, the smaller an amount of clothing M and/or the smaller a change amount (a-b) of a drying index value of the clothing M (S19), the shorter the drying operation time (S21) or an amount of heat generated by heating means 8 is set to be equal to or less than a predetermined heating amount.SELECTED DRAWING: Figure 3

Description

本発明は、衣類がほとんど乾いている場合などの使用でも最適な乾燥運転を行うことができる衣類乾燥機に関する。 The present invention relates to a clothes dryer capable of performing an optimum drying operation even when the clothes are almost dry.

従来、衣類乾燥機として、乾燥運転開始前の試運転中に衣類の乾燥度合を検出し、乾燥度合が所定乾燥度合以上であるときは加熱手段の発生熱量を低く抑えた乾燥運転を行うことで、衣類がほとんど乾いている場合に乾燥運転で衣類が痛むことを防止するものがある(特許文献1)。 Conventionally, as a clothes dryer, the degree of drying of clothes is detected during the trial run before the start of the drying operation, and when the degree of drying is equal to or higher than the predetermined degree of drying, the drying operation is performed in which the amount of heat generated by the heating means is suppressed to a low level. When the clothes are almost dry, there is one that prevents the clothes from being damaged by the drying operation (Patent Document 1).

特開2004−248893号公報Japanese Unexamined Patent Publication No. 2004-2488893

衣類乾燥機の自動運転では、生乾きを防止するために少なくとも最低運転時間(例えば、30分程度)の乾燥運転が行われる。そのため、前記従来の衣類乾燥機において衣類がほとんど乾いていると判断された場合でも最低運転時間の乾燥運転が行われると、例えばドラム内の衣類の量が少ない場合などでは最低運転時間の経過前に衣類が十分に乾いてしまうことがあり、エネルギーを無駄に消費するとともに衣類を痛めてしまうおそれがあった。 In the automatic operation of the clothes dryer, the drying operation is performed for at least the minimum operating time (for example, about 30 minutes) in order to prevent the clothes from drying. Therefore, even if it is determined that the clothes are almost dry in the conventional clothes dryer, if the drying operation for the minimum operating time is performed, for example, when the amount of clothes in the drum is small, before the minimum operating time elapses. In addition, the clothes may be dried sufficiently, which may waste energy and damage the clothes.

本発明は、以上の事情に鑑みてなされたものであり、衣類がほとんど乾いている場合などの使用でも、最適な乾燥ができ且つ乾燥運転のエネルギーの無駄や衣類が痛むことを防止できる衣類乾燥機を提供することを目的とする。 The present invention has been made in view of the above circumstances, and even when the clothes are almost dry, the clothes can be dried optimally and the energy of the drying operation can be prevented from being wasted or the clothes can be dried. The purpose is to provide an opportunity.

本発明に係る衣類乾燥機は、
衣類を収容するドラムと、ドラムを回転させるモータと、ドラム内に熱風を供給する加熱手段と、ドラム内の衣類の乾燥度合を検出する乾燥度合検出手段と、ドラムを回転させるとともに加熱手段を作動させる乾燥運転の動作を制御する制御手段とを備え、
前記制御手段は、
前記乾燥運転開始前にドラムを回転させて動作確認を行う試運転中に前記乾燥度合検出手段で検出された乾燥度合が所定乾燥度合以上であるときは乾燥運転時間を通常コースの最低運転時間よりも短い時間とする専用コースを実行し、
前記専用コースでは、衣類の量が少ないほど及び/又は衣類の乾燥指標値の変化量が小さいほど、前記乾燥運転時間を更に短くする又は前記加熱手段の発生熱量を所定熱量以下とする制御構成を備えるものである。
The clothes dryer according to the present invention
A drum for accommodating clothes, a motor for rotating the drum, a heating means for supplying hot air into the drum, a dryness detecting means for detecting the degree of dryness of the clothes in the drum, and a heating means for rotating the drum and operating the heating means. Equipped with a control means to control the operation of the drying operation
The control means is
When the dryness detected by the dryness detecting means is equal to or higher than the predetermined dryness during the test run in which the drum is rotated to check the operation before the start of the dry operation, the dry operation time is set to be longer than the minimum operation time of the normal course. Run a dedicated course for a short time,
In the dedicated course, the smaller the amount of clothes and / or the smaller the change in the drying index value of clothes, the shorter the drying operation time or the control configuration in which the amount of heat generated by the heating means is set to a predetermined amount or less. To prepare.

前記構成より、通常コースの乾燥運転では少なくとも最低運転時間の乾燥運転が行われるが、乾燥度合が所定乾燥度合以上であり衣類がほとんど乾いているような場合には乾燥運転時間を最低運転時間よりも短い時間とする専用コースが実行される。これにより、衣類が多少湿っている場合などの使用でも十分な乾燥ができるとともに、乾燥運転のエネルギー使用量の削減や衣類を痛めるリスクを減らすことができる。また、専用コースでは、衣類の量が少ないほど及び/又は衣類の乾燥指標値の変化量が小さいほど、前記乾燥運転時間を更に短くする又は前記加熱手段の発生熱量を所定熱量以下とする。これにより、衣類が多少湿っている場合などの使用において、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類を痛めるリスクを減らすことができる。 From the above configuration, in the drying operation of the normal course, the drying operation for at least the minimum operating time is performed, but when the degree of drying is equal to or higher than the predetermined degree of drying and the clothes are almost dry, the drying operation time is set to be longer than the minimum operating time. A dedicated course will be held for a short time. As a result, the clothes can be sufficiently dried even when the clothes are slightly damp, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes can be reduced. Further, in the dedicated course, as the amount of clothes is smaller and / or the amount of change in the drying index value of clothes is smaller, the drying operation time is further shortened or the amount of heat generated by the heating means is set to a predetermined amount or less. As a result, more optimal drying operation can be performed when the clothes are slightly damp, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes can be reduced.

前記衣類乾燥機において、
前記乾燥指標値の変化量は、乾燥運転の開始前と開始後におけるドラム内の衣類の重さの減少量とすることができる。
In the clothes dryer
The amount of change in the drying index value can be the amount of decrease in the weight of clothes in the drum before and after the start of the drying operation.

乾燥運転によって衣類の重さは水分の蒸発によって変化する。衣類の重さの減少量が小さいということは、水分の蒸発が少なく衣類が乾燥完了に近い状態にあると判断することができる。この場合、前記乾燥運転時間を更に短くする又は前記加熱手段の発生熱量を所定熱量以下とすることにより、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類を痛めるリスクを減らすことができる。 Due to the drying operation, the weight of the clothes changes due to the evaporation of water. When the amount of decrease in the weight of the clothes is small, it can be judged that the evaporation of water is small and the clothes are in a state close to the completion of drying. In this case, by further shortening the drying operation time or setting the amount of heat generated by the heating means to a predetermined amount or less, a more optimum drying operation can be performed, the energy consumption of the drying operation can be reduced, and clothes can be damaged. You can reduce the risk.

前記衣類乾燥機において、
前記衣類の重さは、前記モータにおけるモータ始動時のピーク電流値に基づいて判断することができる。
In the clothes dryer
The weight of the clothing can be determined based on the peak current value at the time of starting the motor in the motor.

衣類を収容することでドラム全体の重量が大きくなるほど、ドラムの回転開始時にドラムを回転させるモータの負荷が大きくなるため、モータ始動時のピーク電流値が大きくなる。このことから、モータ始動時のピーク電流値に基づいてドラム内に収容する衣類の重さを求めることができる。従って、部品を追加することなくドラム内の衣類の重さを測定することができる。 As the weight of the entire drum increases by accommodating clothing, the load on the motor that rotates the drum at the start of rotation of the drum increases, so that the peak current value at the start of the motor increases. From this, it is possible to determine the weight of clothing to be accommodated in the drum based on the peak current value at the time of starting the motor. Therefore, the weight of the garment in the drum can be measured without adding any parts.

衣類乾燥機の全体構成を示す模式図である。It is a schematic diagram which shows the whole structure of the clothes dryer. 衣類乾燥機の制御系を示すブロック図である。It is a block diagram which shows the control system of a clothes dryer. 実施形態1の衣類乾燥機の運転動作を説明するためのフローチャートである。It is a flowchart for demonstrating the operation operation of the clothes dryer of Embodiment 1. 実施形態2の衣類乾燥機の運転動作を説明するためのフローチャートである。It is a flowchart for demonstrating the operation operation of the clothes dryer of Embodiment 2.

以下に、本発明の実施形態について添付図面を参照しながら説明する。
(実施形態1)
図1を参照して、衣類乾燥機1は、衣類Mを収容して回転させるドラム2が設けられている。衣類乾燥機1の下面にはフィルタ3a付きの給気口3が開設されている。ドラム2の背面には、フィルタ4a付きの排気口4が開設されており、この排気口4に連通する排気ダクト5が衣類乾燥機1内の後部に設けられている。衣類乾燥機1は、ドラム2内の空気を排気口4を介して排気ダクト5内に排気しつつ、給気口3からの空気をドラム2内に供給する給排気ファン6を配置している。ドラム2と給排気ファン6とは、共通のモータ7により、夫々、ベルト2a,6aを介して回転駆動される。モータ7は、モータドライバ32(図2参照)によって回転駆動される。
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
(Embodiment 1)
With reference to FIG. 1, the clothes dryer 1 is provided with a drum 2 for accommodating and rotating clothes M. An air supply port 3 with a filter 3a is provided on the lower surface of the clothes dryer 1. An exhaust port 4 with a filter 4a is provided on the back surface of the drum 2, and an exhaust duct 5 communicating with the exhaust port 4 is provided at the rear part of the clothes dryer 1. The clothes dryer 1 arranges an air supply / exhaust fan 6 that supplies air from the air supply port 3 into the drum 2 while exhausting the air in the drum 2 into the exhaust duct 5 through the exhaust port 4. .. The drum 2 and the air supply / exhaust fan 6 are rotationally driven by a common motor 7 via the belts 2a and 6a, respectively. The motor 7 is rotationally driven by a motor driver 32 (see FIG. 2).

また、衣類乾燥機1内には、ドラム2に対する給気口3からの空気の給気通路に位置させて、加熱手段たるバーナ8と、バーナ8の燃焼排ガスを空気と共に温風としてドラム2内に導く燃焼筐9とが配置されている。バーナ8に対するガス供給路8aには、第1と第2の一対の電磁弁10,11と、比例弁12とが介設されている。燃焼筐9には、バーナ8に点火する点火電極13と、失火検知のための第1サーモカップル14と、過熱検知のための第2サーモカップル15と、バイメタルスイッチからなる第1オーバーヒートスイッチ16(作動温度150℃)と、ドラム2に供給される温風の温度を検出する吹出温センサ17とが設けられている。 Further, in the clothes dryer 1, the burner 8 as a heating means and the combustion exhaust gas of the burner 8 are used as warm air together with the air in the drum 2 so as to be located in the air supply passage of the air from the air supply port 3 to the drum 2. A combustion casing 9 leading to the air is arranged. A pair of first and second solenoid valves 10 and 11 and a proportional valve 12 are interposed in the gas supply path 8a for the burner 8. The combustion casing 9 has a first overheat switch 16 (a first overheat switch 16 including an ignition electrode 13 for igniting the burner 8, a first thermocouple 14 for detecting misfire, a second thermocouple 15 for detecting overheating, and a bimetal switch. An operating temperature of 150 ° C.) and a blowout temperature sensor 17 for detecting the temperature of the hot air supplied to the drum 2 are provided.

センサ類としては、更に、ドラム2のドア18の開閉を検出するドアスイッチ19と、ドラム2内の衣類Mの温度を検出する衣類温センサ20と、ドラム2内の衣類Mに接触する一対の電極21a,21b間の抵抗変化から衣類Mの乾燥度合いを検出する電極センサ21と、排気ダクト5内に配置した排気温センサ22及びバイメタルスイッチからなる第2オーバーヒートスイッチ23(作動温度85℃)と、ドラム2に取り付けた磁石24aと協働してドラム2の回転を検出するドラム用回転検出器24と、給排気ファン6に取り付けた磁石25aと協働して給排気ファン6の回転を検出するファン用回転検出器25とが設けられている。 Further, as the sensors, a door switch 19 for detecting the opening / closing of the door 18 of the drum 2, a clothing temperature sensor 20 for detecting the temperature of the clothing M in the drum 2, and a pair of sensors in contact with the clothing M in the drum 2. An electrode sensor 21 that detects the degree of dryness of clothing M from changes in resistance between the electrodes 21a and 21b, and a second overheat switch 23 (operating temperature 85 ° C.) consisting of an exhaust temperature sensor 22 arranged in the exhaust duct 5 and a bimetal switch. , The rotation detector 24 for the drum that detects the rotation of the drum 2 in cooperation with the magnet 24a attached to the drum 2, and the rotation of the air supply / exhaust fan 6 in cooperation with the magnet 25a attached to the air supply / exhaust fan 6. A rotation detector 25 for a fan is provided.

衣類乾燥機1の前面の操作パネル26には、図2に示すように、電源スイッチ27、乾燥運転の開始を指示する運転スイッチ28、衣類の種別(厚物、デリケート等)を選択する選択スイッチ29及び表示部30が設けられている。また、衣類乾燥機1内には、操作パネル26に接続されるマイクロコンピュータからなるコントローラ(制御手段)31が設けられており、前記各種センサ類からの信号がコントローラ31に入力されている。コントローラ31には、モータドライバ32を介してモータ7の動作を制御する。このモータ7を制御するコントローラ31の機能部には、モータ7に通電するモータ電流の検知部を有しており、この検知部によってモータ始動時のピーク電流値を検知することができる。 As shown in FIG. 2, the operation panel 26 on the front surface of the clothes dryer 1 has a power switch 27, an operation switch 28 for instructing the start of the drying operation, and a selection switch for selecting the type of clothes (thick, delicate, etc.). 29 and a display unit 30 are provided. Further, in the clothes dryer 1, a controller (control means) 31 composed of a microcomputer connected to the operation panel 26 is provided, and signals from the various sensors are input to the controller 31. The controller 31 controls the operation of the motor 7 via the motor driver 32. The functional unit of the controller 31 that controls the motor 7 has a motor current detecting unit that energizes the motor 7, and the peak current value at the time of starting the motor can be detected by this detecting unit.

次に、衣類乾燥機1の乾燥運転動作の例を説明する。
以下の乾燥運転動作は、コントローラ31によって制御される。図3のフローチャートを参照して、運転スイッチ28がオン(S1)されると、モータ7を作動(S2)し、ドラム2と給排気ファン6とを回転させて所定の試運転時間TM(例えば、1分)の試運転を行う。試運転中にドラム用とファン用の回転検出器24,25から発生される検出パルスに基づいてドラム2と給排気ファン6とが正常に回転されているか否かの動作確認と、各センサ類から正常な信号が出力されているか否かを診断するセンサ確認とを実行する。試運転で異常が発見された場合はエラー表示等の異常処理を行うとともにモータ7を停止し、異常が発見されなければ、試運転時間が経過(S5で「Y」)すると、点火電極13を火花放電させてバーナ8にガス供給し、バーナ8を点火(S6)する。
Next, an example of the drying operation operation of the clothes dryer 1 will be described.
The following dry operation operation is controlled by the controller 31. With reference to the flowchart of FIG. 3, when the operation switch 28 is turned on (S1), the motor 7 is operated (S2), the drum 2 and the air supply / exhaust fan 6 are rotated, and a predetermined test run time TM (for example, for example). Perform a test run for 1 minute). Based on the detection pulses generated from the rotation detectors 24 and 25 for the drum and fan during the test run, check the operation of whether the drum 2 and the air supply / exhaust fan 6 are rotating normally, and from each sensor. Perform sensor confirmation to diagnose whether a normal signal is output. If an abnormality is found in the test run, error processing such as error display is performed and the motor 7 is stopped. If no abnormality is found, the ignition electrode 13 is discharged with sparks when the test run time has elapsed (“Y” in S5). Gas is supplied to the burner 8 and the burner 8 is ignited (S6).

試運転中は、ドラム2内の初期の衣類Mの重さaを測定(S3)し、また、ドラム2内の衣類Mの乾燥度合を検出(S4)する。衣類Mの重さの測定は、モータ始動時におけるモータ電流のピーク電流値に基づいて求めることができる。すなわち、衣類Mを収容したドラム2の重量が大きいほど、ドラム2の回転開始時におけるモータ7の負荷が大きくなるため、モータ始動時におけるモータ電流のピーク電流値が大きくなる。これより、モータ始動時のピーク電流値とドラム2内の衣類Mの重さとの関係を定めたテーブル又は関係式を用いて、検出されたモータ始動時のピーク電流値に基づいてドラム2内の初期の衣類Mの重さを求める。なお、ピーク電流値と衣類重さとの関係を定めたテーブル又は関係式は、実験やシミュレーション等を行って事前に定めることができる。このテーブル又は関係式は、コントローラ31の記憶部に記憶させている。 During the test run, the weight a of the initial clothing M in the drum 2 is measured (S3), and the degree of dryness of the clothing M in the drum 2 is detected (S4). The weight of the clothing M can be measured based on the peak current value of the motor current at the time of starting the motor. That is, the heavier the weight of the drum 2 accommodating the clothing M, the larger the load on the motor 7 at the start of rotation of the drum 2, and therefore the higher the peak current value of the motor current at the start of the motor. From this, using a table or a relational expression that defines the relationship between the peak current value at the time of motor start and the weight of clothing M in the drum 2, based on the detected peak current value at the time of motor start, the inside of the drum 2 Find the weight of the initial clothing M. The table or relational expression that defines the relationship between the peak current value and the weight of clothing can be determined in advance by conducting experiments, simulations, and the like. This table or relational expression is stored in the storage unit of the controller 31.

衣類Mの乾燥度合は、乾燥度合検出手段となる電極センサ21での電極21a,21b間の抵抗値Rに基づいて検出することができる。すなわち、電極センサ21の電極21a,21b間の抵抗値は、ドラム2の回転で衣類Mが両電極21a,21bに接触する度に低下する。電極センサ21で検出される抵抗値Rは、衣類Mが乾燥しているほど高くなるので、この検出抵抗値Rに基づいてドラム2内の衣類Mの乾燥度合を検知することができる。 The degree of dryness of the clothes M can be detected based on the resistance value R between the electrodes 21a and 21b in the electrode sensor 21 which is the means for detecting the degree of dryness. That is, the resistance value between the electrodes 21a and 21b of the electrode sensor 21 decreases each time the clothing M comes into contact with both electrodes 21a and 21b due to the rotation of the drum 2. Since the resistance value R detected by the electrode sensor 21 becomes higher as the clothes M are dried, the degree of dryness of the clothes M in the drum 2 can be detected based on the detected resistance value R.

そして、ステップS7の乾燥判定では、ほとんど乾いている衣類Mが接触したときの電極センサ32の抵抗値を乾燥判別値YRとする。実際にドラム2内の衣類Mが電極センサ21に接触したときの検出抵抗値Rが乾燥判別値YRを下回った回数C(未乾燥とみなせる回数)をカウントする。この回数Cが所定回数YC(例えば、2回)以上の場合は、ドラム2内の衣類Mは未乾燥であると判定し、回数Cが所定回数YC未満の場合は、ドラム2内の衣類Mはほとんど乾燥していると判定する。なお、乾燥判定における前記回数Cのカウントは、試運転の開始時からバーナ点火時までの間の試運転中ずっとカウントする。これにより、衣類Mの乾燥判定を精度よく行うことができる。 Then, in the drying determination in step S7, the resistance value of the electrode sensor 32 when the clothes M, which are almost dry, come into contact with each other is set as the drying determination value YR. The number C (the number of times that can be regarded as undried) when the detected resistance value R when the clothes M in the drum 2 actually come into contact with the electrode sensor 21 falls below the drying discrimination value YR is counted. When the number C is a predetermined number of times YC (for example, twice) or more, it is determined that the clothes M in the drum 2 are undried, and when the number C is less than the predetermined number of times YC, the clothes M in the drum 2 are determined. Determines to be almost dry. The count of the number C in the dryness determination is counted during the trial run from the start of the trial run to the ignition of the burner. This makes it possible to accurately determine the drying of the clothes M.

乾燥判定(S7)で衣類Mの乾燥度合が所定乾燥度合以上でないと判断された場合(S7で「N」)は、通常コースの乾燥運転へ移行(S8)する。通常コースでは、例えば、バーナ8の燃焼量(発生熱量)を最大燃焼量にして乾燥運転を開始し、衣類温センサ20、電極センサ21、排気温センサ22等からの信号に基づいて把握する衣類Mの乾燥進捗状況に応じてバーナ8の燃焼量を段階的に減少させ、衣類Mの乾燥完了(S9)が判断されると、バーナ8を消火しモータ7を停止(S10)させ、乾燥運転を終了(S11)する。この通常コースでは、衣類Mの生乾きを防止するために最低運転時間(例えば、30分)の乾燥運転が行われる。 When it is determined in the drying determination (S7) that the drying degree of the clothes M is not equal to or higher than the predetermined drying degree (“N” in S7), the process shifts to the drying operation of the normal course (S8). In the normal course, for example, the burning amount (heat generated) of the burner 8 is set to the maximum burning amount, the drying operation is started, and the clothes are grasped based on the signals from the clothes temperature sensor 20, the electrode sensor 21, the exhaust temperature sensor 22, and the like. The combustion amount of the burner 8 is gradually reduced according to the drying progress of M, and when it is determined that the clothes M have been dried (S9), the burner 8 is extinguished and the motor 7 is stopped (S10) to perform the drying operation. Is finished (S11). In this normal course, a drying operation with a minimum operating time (for example, 30 minutes) is performed in order to prevent the clothes M from drying out.

乾燥判定(S7)で衣類の乾燥度合が所定乾燥度合以上であると判断された場合(S7で「Y」)は、専用コースの乾燥運転へ移行(S12)する。この専用コースは、ドラム2内の衣類Mがほとんど乾いている状態にあると判断されているので、乾燥運転時間を前記通常コースでの最低運転時間(例えば、30分)よりも短い時間で乾燥運転が行われる。専用コースでは、乾燥運転が開始されると、バーナ8の燃焼量を最大燃焼量にして初期運転時間t(例えば、10分)の乾燥運転が行われる(S13)。これにより、衣類Mに僅かに含まれている水分の蒸発を促進することができる。初期運転時間tが経過すると、ここで一旦、モータ7を停止しバーナ8を消火(S14)する。モータ7が完全に停止したところで、モータ7を再始動(S15)させて、ドラム2内の衣類Mの重さbを測定する。この衣類重さの測定方法は、試運転のときと同様であり、モータ始動時のピーク電流値に基づいて測定される。モータ7を再始動させてから所定時間ts(例えば、5秒)が経過(S17)すると、バーナ8を再点火(S18)する。 When it is determined in the drying determination (S7) that the degree of drying of the clothes is equal to or higher than the predetermined degree of drying (“Y” in S7), the clothes are shifted to the drying operation of the dedicated course (S12). Since it is determined that the clothes M in the drum 2 are almost dry in this dedicated course, the drying operation time is shorter than the minimum operation time (for example, 30 minutes) in the normal course. Driving is done. In the dedicated course, when the drying operation is started, the drying operation is performed with the combustion amount of the burner 8 as the maximum combustion amount and the initial operation time t (for example, 10 minutes) (S13). This makes it possible to promote the evaporation of a small amount of water contained in the clothes M. When the initial operation time t has elapsed, the motor 7 is temporarily stopped and the burner 8 is extinguished (S14). When the motor 7 is completely stopped, the motor 7 is restarted (S15), and the weight b of the clothing M in the drum 2 is measured. This method of measuring the weight of clothing is the same as in the test run, and is measured based on the peak current value at the time of starting the motor. When a predetermined time ts (for example, 5 seconds) has elapsed (S17) after restarting the motor 7, the burner 8 is reignited (S18).

そして、乾燥運転の開始前と開始後におけるドラム2内の衣類Mの重さの減少量(a−b)が水分判別値X以上か否か判断(S19)する。前記減少量(a−b)が水分判別値X以上の場合(S19で「Y」)は、乾燥運転の残時間をt1(例えば、10分)とし長く設定(S20)し、前記減少量(a−b)が水分判別値X未満の場合(S19で「N」)は、乾燥運転の残時間をt2(例えば、5分)とし短く設定(S21)する。すなわち、衣類Mの乾燥指標値の変化量Δmとなる衣類Mの重さの減少量(a−b)が小さいほど、専用コースの全乾燥運転時間を更に短くする。これにより、衣類Mが多少湿っている場合や衣類Mを暖める場合などの使用において、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。 Then, it is determined (S19) whether or not the amount of decrease in the weight (ab) of the clothes M in the drum 2 before and after the start of the drying operation is equal to or greater than the moisture discrimination value X. When the decrease amount (ab) is equal to or greater than the moisture discrimination value X (“Y” in S19), the remaining time of the drying operation is set to t1 (for example, 10 minutes) and set long (S20), and the decrease amount (S20) is set. When ab) is less than the moisture discrimination value X (“N” in S19), the remaining time of the drying operation is set to t2 (for example, 5 minutes) and set short (S21). That is, the smaller the decrease in the weight (ab) of the clothes M, which is the change amount Δm of the drying index value of the clothes M, the shorter the total drying operation time of the dedicated course is further shortened. As a result, more optimal drying operation can be performed when the clothes M are slightly damp or when the clothes M are warmed, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes M can be reduced. Can be done.

そして、乾燥運転の残時間(t1又はt2)が経過すると、バーナ8を消火しモータ7を停止(S22)させ、乾燥運転を終了(S23)する。 Then, when the remaining time (t1 or t2) of the drying operation elapses, the burner 8 is extinguished, the motor 7 is stopped (S22), and the drying operation is ended (S23).

以上のように、実施形態1によれば、乾燥度合が所定乾燥度合以上であり衣類Mがほとんど乾いているような場合には乾燥運転時間を通常コースでの最低運転時間よりも短い時間とする専用コースが実行される。これにより、衣類Mが多少湿っている場合又は衣類Mを暖める場合などの使用でも十分な乾燥又は暖めができるとともに、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。 As described above, according to the first embodiment, when the degree of drying is equal to or higher than the predetermined degree of drying and the clothes M are almost dry, the drying operation time is set to be shorter than the minimum operation time in the normal course. A dedicated course is carried out. As a result, the clothes M can be sufficiently dried or warmed even when the clothes M are slightly damp or when the clothes M are warmed, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes M can be reduced.

また、専用コースでは、乾燥指標値の変化量Δm、すなわち衣類Mの重さの減少量(a−b)が小さいほど、前記乾燥運転時間を更に短くする。これにより、衣類Mが多少湿っている場合や衣類Mを暖める場合などの使用において、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。 Further, in the dedicated course, the smaller the change amount Δm of the drying index value, that is, the reduction amount (ab) of the weight of the clothes M, the shorter the drying operation time. As a result, more optimal drying operation can be performed when the clothes M are slightly damp or when the clothes M are warmed, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes M can be reduced. Can be done.

なお、実施形態1では、ドラム2内の衣類Mの重さをモータ始動時のピーク電流値に基づいて測定するが、ドラム重量を測定する重量センサを設け、この重量センサによって測定するようにしてもよい。 In the first embodiment, the weight of the clothing M in the drum 2 is measured based on the peak current value at the time of starting the motor. However, a weight sensor for measuring the weight of the drum is provided, and the weight sensor is used for the measurement. May be good.

また、実施形態1では、衣類Mの乾燥指標値の変化量として乾燥運転開始前後の衣類Mの重さの減少量(a−b)を用いるが、これに限らず、乾燥運転開始前後における衣類Mの湿度や温度の変化量を乾燥指標値の変化量Δmとして用いてもよい。この場合、衣類Mの湿度は、ドラム2又は排気ダクト5に湿度センサを設けてこの湿度センサによって測定することができる。衣類Mの温度は、衣類温センサ20又は排気温センサ22等に基づいて測定することができる。 Further, in the first embodiment, the amount of decrease in the weight of the clothes M before and after the start of the drying operation (ab) is used as the amount of change in the drying index value of the clothes M, but the present invention is not limited to this, and the clothes before and after the start of the drying operation. The amount of change in humidity or temperature of M may be used as the amount of change Δm in the drying index value. In this case, the humidity of the clothes M can be measured by providing a humidity sensor on the drum 2 or the exhaust duct 5. The temperature of the clothes M can be measured based on the clothes temperature sensor 20, the exhaust temperature sensor 22, or the like.

また、実施形態1では、乾燥判定(図3のフローチャートのS7)は、乾燥運転前の乾燥度合として電極センサ21での検出抵抗値R(図3のフローチャートのS4)に基づいて判断するが、これに限らず、ドラム2又は排気ダクト5等に湿度センサを設け、試運転の際にこの湿度センサで検出する湿度値に基づいて判断するようにしてもよい。 Further, in the first embodiment, the drying determination (S7 in the flowchart of FIG. 3) is determined based on the detection resistance value R (S4 in the flowchart of FIG. 3) as the degree of drying before the drying operation. Not limited to this, a humidity sensor may be provided on the drum 2 or the exhaust duct 5, and the determination may be made based on the humidity value detected by the humidity sensor during the trial run.

(実施形態2)
実施形態2の衣類乾燥機1aは、実施形態1と異なる点として専用コースにおいてドラム2内に収容する衣類Mの重さによって乾燥運転の残時間を変更するものである。すなわち、実施形態2の衣類乾燥機1aでは、その運転動作を示した図4のフローチャートに示すように、ステップS119にて、乾燥運転の途中で測定した衣類Mの重さw(S16)が一定値Z以上の場合(S119で「Y」)は、乾燥運転の残時間をt1(例えば、10分)とし長く設定(S20)し、前記衣類重さwが一定値Z未満の場合(S119で「N」)は、乾燥運転の残時間をt2(例えば、5分)とし短く設定(S21)する。ドラム2内の衣類Mの重さwが軽いほど、すなわち衣類量が少ないほど、専用コースの全乾燥運転時間を更に短くする。これにより、衣類Mが多少湿っている場合や衣類Mを暖める場合などの使用において、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。なお、衣類Mの重さwは、実施形態1で説明したとおり、モータ7のモータ始動時のピーク電流値に基づいて事前に定めたテーブル又は関係式から求めることができ、また、ドラム2に重量センサを設けて測定することができる。
(Embodiment 2)
The clothes dryer 1a of the second embodiment is different from the first embodiment in that the remaining time of the drying operation is changed according to the weight of the clothes M housed in the drum 2 in the dedicated course. That is, in the clothes dryer 1a of the second embodiment, as shown in the flowchart of FIG. 4 showing the operation operation, the weight w (S16) of the clothes M measured during the drying operation in step S119 is constant. When the value is Z or more (“Y” in S119), the remaining time of the drying operation is set to t1 (for example, 10 minutes) and set long (S20), and when the clothing weight w is less than the constant value Z (in S119). For "N"), the remaining time of the drying operation is set to t2 (for example, 5 minutes) and set short (S21). The lighter the weight w of the clothes M in the drum 2, that is, the smaller the amount of clothes, the shorter the total drying operation time of the dedicated course. As a result, more optimal drying operation can be performed when the clothes M are slightly damp or when the clothes M are warmed, and the energy consumption of the drying operation can be reduced and the risk of damaging the clothes M can be reduced. Can be done. As described in the first embodiment, the weight w of the clothing M can be obtained from a table or a relational expression determined in advance based on the peak current value at the time of starting the motor of the motor 7, and the weight w of the clothing M can be obtained from the drum 2. A weight sensor can be provided for measurement.

また、実施形態2では、他に実施形態1と異なる点として試運転時ではドラム2内の衣類Mの重さを測定せず(図3のフローチャートのS3を有しない。)、上述のとおり、専用コースの乾燥運転開始後に衣類Mの重さwを測定するようにしている。ただし、試運転時においてドラム2内の衣類Mの重さwを測定し(図3のフローチャートのS3を実施する。)、専用コース移行後では衣類Mの重さを測定するステップ(図4のS14〜S18)を実施しないようにしてもよい。その他に実施形態2の構成及び作用効果は、実施形態1と同様とする。 Further, in the second embodiment, another difference from the first embodiment is that the weight of the clothing M in the drum 2 is not measured during the trial run (it does not have S3 in the flowchart of FIG. 3), and as described above, it is dedicated. The weight w of the clothes M is measured after the start of the drying operation of the course. However, the step of measuring the weight w of the clothing M in the drum 2 during the test run (implementing S3 in the flowchart of FIG. 3) and measuring the weight of the clothing M after shifting to the dedicated course (S14 in FIG. 4). ~ S18) may not be carried out. In addition, the configuration and operation / effect of the second embodiment are the same as those of the first embodiment.

(その他の実施形態)
他の実施形態として、専用コースにおいて、残時間(t1又はt2)を決定するステップを変更することができる。すなわち、図4のフローチャートのように衣類Mの重さw(図4のS16)が一定値Z以上の場合(図4のS119で「Y」)は、乾燥運転の残時間をt1(例えば、10分)とし長く設定(図4のS20)する。一方、前記衣類重さwが一定値Z未満の場合(図4のS119で「N」)にあっては、図3のフローチャートのように衣類重さの減少量(a−b)が水分判別値X以上の場合(図3のS19で「Y」)は、乾燥運転の残時間をt1(例えば、10分)とし長く設定(図3のS20)し、衣類重さの減少量(a−b)が水分判別値X未満の場合(図3のS19で「N」)は、乾燥運転の残時間をt2(例えば、5分)とし短く設定(S21)する。これにより、衣類Mの重さwに加えて衣類Mの重さの変化量(a−b)に基づいて乾燥運転時間を設定するので、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。
(Other embodiments)
As another embodiment, in the dedicated course, the step of determining the remaining time (t1 or t2) can be changed. That is, when the weight w of the clothes M (S16 in FIG. 4) is a certain value Z or more (“Y” in S119 in FIG. 4) as in the flowchart of FIG. 4, the remaining time of the drying operation is set to t1 (for example, for example). 10 minutes) and set it longer (S20 in FIG. 4). On the other hand, when the clothing weight w is less than a certain value Z (“N” in S119 of FIG. 4), the amount of decrease in clothing weight (ab) determines the moisture content as shown in the flowchart of FIG. When the value is X or more (“Y” in S19 in FIG. 3), the remaining time of the drying operation is set to t1 (for example, 10 minutes) and set long (S20 in FIG. 3), and the amount of decrease in the weight of clothes (a-). When b) is less than the moisture discrimination value X (“N” in S19 in FIG. 3), the remaining time of the drying operation is set to t2 (for example, 5 minutes) and set short (S21). As a result, the drying operation time is set based on the amount of change (ab) in the weight of the clothes M in addition to the weight w of the clothes M, so that a more optimum drying operation can be performed, and the drying operation can be performed. It is possible to reduce the amount of energy used and the risk of damaging clothing M.

また、他の実施形態として、前記各実施形態では、専用コースにおいて衣類Mの重さwや衣類Mの乾燥指標値の変化量(a−b)に基づいて乾燥運転の残時間(t1又はt2)を設定するが、残時間に代えて、バーナ8の燃焼量(発生熱量)を少なくするようにしてもよい。この場合、残時間は、専用コースの全乾燥運転時間が通常コースの最低運転時間よりも長くならないように一定(例えば、10分)とする。そして、各実施形態で説明した残時間t1に代えてバーナ燃焼量を中燃焼量(例えば、最大燃焼量の70%)とし、残時間t2に代えてバーナ燃焼量を小燃焼量(例えば、最大燃焼量の50%)とするように制御する。これによっても、衣類Mが多少湿っている場合や衣類Mを暖める場合などの使用において、より最適な乾燥運転を行うことができ、乾燥運転のエネルギー使用量の削減や衣類Mを痛めるリスクを減らすことができる。 Further, as another embodiment, in each of the above-described embodiments, the remaining time (t1 or t2) of the drying operation is based on the weight w of the clothes M and the change amount (ab) of the drying index value of the clothes M in the dedicated course. ) Is set, but the combustion amount (heat generation amount) of the burner 8 may be reduced instead of the remaining time. In this case, the remaining time is fixed (for example, 10 minutes) so that the total drying operation time of the dedicated course does not become longer than the minimum operation time of the normal course. Then, instead of the remaining time t1 described in each embodiment, the burner combustion amount is set to the medium combustion amount (for example, 70% of the maximum combustion amount), and the burner combustion amount is set to the small combustion amount (for example, maximum) instead of the remaining time t2. It is controlled to be 50% of the amount of combustion). This also makes it possible to perform more optimal drying operation when the clothes M are slightly damp or when the clothes M are warmed, and the energy consumption of the drying operation is reduced and the risk of damaging the clothes M is reduced. be able to.

その他、本発明は、前記各々の実施形態に限定されるものでなく、本発明の技術思想に基づいて必要な変更を行うことができる。
例えば、前記専用コースにおいて、乾燥運転時間又はバーナ燃焼量をt1とt2の2段階で設定するが、3段階等の多段階に設定することができる。
また、前記専用コースにおいて、初期運転時間t(図3のS13や図4のS13)の間はバーナ8の燃焼量を最大燃焼量とするが、最大燃焼量よりも少なくした燃焼量としてもよい。
また、加熱手段は、バーナ8に限らず、電気ヒータや温水循環の熱交換器等を加熱手段として使用することができる。
In addition, the present invention is not limited to each of the above embodiments, and necessary modifications can be made based on the technical idea of the present invention.
For example, in the dedicated course, the drying operation time or the burner combustion amount is set in two stages of t1 and t2, but can be set in multiple stages such as three stages.
Further, in the dedicated course, the combustion amount of the burner 8 is set as the maximum combustion amount during the initial operation time t (S13 in FIG. 3 and S13 in FIG. 4), but the combustion amount may be less than the maximum combustion amount. ..
Further, the heating means is not limited to the burner 8, and an electric heater, a heat exchanger for circulating hot water, or the like can be used as the heating means.

1,1a 衣類乾燥機
2 ドラム
7 モータ
8 バーナ(加熱手段)
21 電極センサ(乾燥度合検出手段)
31 コントローラ(制御手段)
M 衣類
1,1a Clothes dryer 2 Drum 7 Motor 8 Burner (heating means)
21 Electrode sensor (dryness detection means)
31 Controller (control means)
M clothing

Claims (3)

衣類を収容するドラムと、ドラムを回転させるモータと、ドラム内に熱風を供給する加熱手段と、ドラム内の衣類の乾燥度合を検出する乾燥度合検出手段と、ドラムを回転させるとともに加熱手段を作動させる乾燥運転の動作を制御する制御手段とを備え、
前記制御手段は、
前記乾燥運転開始前にドラムを回転させて動作確認を行う試運転中に前記乾燥度合検出手段で検出された乾燥度合が所定乾燥度合以上であるときは乾燥運転時間を通常コースの最低運転時間よりも短い時間とする専用コースを実行し、
前記専用コースでは、衣類の量が少ないほど及び/又は衣類の乾燥指標値の変化量が小さいほど、前記乾燥運転時間を更に短くする又は前記加熱手段の発生熱量を所定熱量以下とする制御構成を備える衣類乾燥機。
A drum for accommodating clothes, a motor for rotating the drum, a heating means for supplying hot air into the drum, a dryness detecting means for detecting the degree of dryness of the clothes in the drum, and a heating means for rotating the drum and operating the heating means. Equipped with a control means to control the operation of the drying operation
The control means is
When the dryness detected by the dryness detecting means is equal to or higher than the predetermined dryness during the test run in which the drum is rotated to check the operation before the start of the dry operation, the dry operation time is set to be longer than the minimum operation time of the normal course. Run a dedicated course for a short time,
In the dedicated course, the smaller the amount of clothes and / or the smaller the change in the drying index value of clothes, the shorter the drying operation time or the control configuration in which the amount of heat generated by the heating means is set to a predetermined amount or less. Clothes dryer to prepare.
請求項1に記載の衣類乾燥機において、
前記乾燥指標値の変化量は、乾燥運転の開始前と開始後におけるドラム内の衣類の重さの減少量とする衣類乾燥機。
In the clothes dryer according to claim 1,
The change amount of the drying index value is a clothes dryer in which the weight of clothes in the drum is reduced before and after the start of the drying operation.
請求項2に記載の衣類乾燥機において、
前記衣類の重さは、前記モータにおけるモータ始動時のピーク電流値に基づいて判断する衣類乾燥機。

In the clothes dryer according to claim 2,
A clothes dryer that determines the weight of clothes based on the peak current value at the time of starting the motor in the motor.

JP2020089097A 2020-05-21 2020-05-21 Clothes dryer Pending JP2021183027A (en)

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