JP4687555B2 - Clothes dryer - Google Patents

Clothes dryer Download PDF

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Publication number
JP4687555B2
JP4687555B2 JP2006132159A JP2006132159A JP4687555B2 JP 4687555 B2 JP4687555 B2 JP 4687555B2 JP 2006132159 A JP2006132159 A JP 2006132159A JP 2006132159 A JP2006132159 A JP 2006132159A JP 4687555 B2 JP4687555 B2 JP 4687555B2
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compressor
temperature
predetermined
refrigerant
drying apparatus
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JP2007301130A (en
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元 野嶋
重陽 中本
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Description

本発明は、一般家庭で使用される洗濯と乾燥を同一槽で行う洗濯乾燥機や、乾燥のみを行う衣類乾燥機に搭載される衣類乾燥装置に関するものである。   The present invention relates to a clothes dryer used in a general household and a clothes dryer installed in a clothes dryer that performs only drying.

従来、この種の衣類乾燥装置として、ヒータを熱源にするものや、ヒートポンプ装置を熱源に用いたものがある(例えば、特許文献1参照)。以下、上記特許文献1に開示された従来の衣類乾燥装置を搭載した洗濯乾燥機について図4を用いて説明する。図4は、前記特許文献1に記載された従来の洗濯乾燥機の側断面図である。   Conventionally, as this type of clothes drying apparatus, there are one using a heater as a heat source and one using a heat pump apparatus as a heat source (see, for example, Patent Document 1). Hereinafter, a washing / drying machine equipped with the conventional clothes drying apparatus disclosed in Patent Document 1 will be described with reference to FIG. FIG. 4 is a side sectional view of the conventional washing and drying machine described in Patent Document 1. As shown in FIG.

図4において、洗濯乾燥機1は、ケーシング2をもち、同ケーシング2の中央に衣類6を出し入れするためのドア12が取り付けられており、内部には回転ドラム3が収納されている。同回転ドラム3の所定の部位には衣類6を回転ドラム3の回転とともに持ち上げ落下させるためのビータ5と、洗濯水7及び乾燥のための循環エア9が出入りするパンチング孔4が多数開口させてある。回転ドラム3のシャフト11は、図示されない駆動用モータから回転のための動力を受けるようになっている。   In FIG. 4, the washing / drying machine 1 has a casing 2, a door 12 for attaching and removing clothes 6 is attached to the center of the casing 2, and a rotating drum 3 is accommodated therein. In a predetermined part of the rotating drum 3, a beater 5 for lifting and dropping the clothes 6 with the rotation of the rotating drum 3 and a number of punching holes 4 through which washing water 7 and circulating air 9 for drying are opened and closed are opened. is there. The shaft 11 of the rotating drum 3 receives power for rotation from a driving motor (not shown).

また、ケーシング2内の回転ドラム3の背面は、空気入口24及び空気出口23を除き隔壁22によって仕切られ、循環エア9が通るダクト10、及び13が形成されている。前記隔壁22の前面下部は洗濯槽14を構成し、同洗濯槽14の部分に回転ドラム3の下部が臨んでいる。前記各エアダクト10、13には、圧縮機19、凝縮器(コンデンサ)18、ファン17、膨脹弁20、蒸発器(エバポレータ)15等が内蔵されており、いわゆるヒートポンプサイクルが形成されている。また、凝縮器18の一部はケーシング2の外背面に延長され、放熱器16を形成している。21は、蒸発器15で発生した結露水を排水するためのドレン排水用配管、8は、洗濯水を排水するための洗濯排水用配管である。   Further, the rear surface of the rotating drum 3 in the casing 2 is partitioned by a partition wall 22 except for the air inlet 24 and the air outlet 23, and ducts 10 and 13 through which the circulating air 9 passes are formed. The lower part of the front surface of the partition wall 22 constitutes a washing tub 14, and the lower part of the rotating drum 3 faces the portion of the washing tub 14. Each of the air ducts 10 and 13 includes a compressor 19, a condenser (condenser) 18, a fan 17, an expansion valve 20, an evaporator (evaporator) 15 and the like, and a so-called heat pump cycle is formed. A part of the condenser 18 is extended to the outer back surface of the casing 2 to form a radiator 16. 21 is a drain drain pipe for draining the dew condensation water generated in the evaporator 15, and 8 is a laundry drain pipe for draining the washing water.

次に、上記従来の洗濯乾燥機の各工程と作用について説明する。洗濯、すすぎ工程では、ドア12をあけて衣類6及び適量の洗剤を投入し、ドア12を閉め、以下の工程を実行する。   Next, each process and operation of the conventional washing / drying machine will be described. In the washing and rinsing process, the door 12 is opened, the garment 6 and an appropriate amount of detergent are put in, the door 12 is closed, and the following processes are executed.

水供給バルブ(図示せず)により洗濯槽14に水位Aの位置まで規定量の水7が供給される。回転ドラム3がプログラムされた回転数で連続または間欠的に回転し、洗浄が行なわれる。この間、衣類6は、ビータ5によって持ち上げられ落下する。洗濯終了後、汚れた洗濯水は、洗濯槽14の洗濯排水用配管8から機外に排水される。続いて、すすぎ工程
が同様の工程で実行される。すすぎ水も洗濯排水として洗濯排水用配管8から機外に排水される。
A specified amount of water 7 is supplied to the washing tub 14 up to the position of the water level A by a water supply valve (not shown). The rotating drum 3 rotates continuously or intermittently at the programmed number of rotations to perform cleaning. During this time, the garment 6 is lifted and dropped by the beater 5. After the washing is finished, the dirty washing water is drained out of the machine from the washing drain pipe 8 of the washing tub 14. Subsequently, the rinsing process is performed in the same process. Rinsing water is also drained out of the machine from the washing drain pipe 8 as washing drain.

脱水工程では、回転ドラム3がプログラムされた回転数で回転し、衣類6中の水分を脱水する。脱水された水は、同じく洗濯排水として洗濯排水用配管8から機外に排水される。乾燥工程では、圧縮機19、ファン17及び回転ドラム3が運転されて、循環エア9がダクト10、13及び回転ドラム3の内部を循環する。   In the dehydration step, the rotating drum 3 rotates at a programmed number of rotations to dehydrate moisture in the clothing 6. The dewatered water is also drained out of the machine from the laundry drainage pipe 8 as laundry drainage. In the drying process, the compressor 19, the fan 17, and the rotating drum 3 are operated, and the circulating air 9 circulates inside the ducts 10, 13 and the rotating drum 3.

衣類6から蒸発した水蒸気は、循環エア9と共に、空気出口23、ダクト10を通って蒸発器15に接触し、冷却されて凝縮水(結露水)となって除湿される。除湿された循環エア9は、ファン17によって凝縮器18に送られ、ここで加熱されて熱風となってダクト13、空気入口24を経て回転ドラム3内に流入し、再び衣類6から水分を蒸発させる。蒸発器15で除湿された結露水は、ドレン排水用配管21から機外に排水される。この間、回転ドラム3は洗濯工程と同様にあらかじめ設定された回転数で連続又は間欠的に回転する。以上、洗濯から乾燥までを連続して行う工程について説明した。
特公平6−75628号公報
The water vapor evaporated from the clothing 6 is brought into contact with the evaporator 15 through the air outlet 23 and the duct 10 together with the circulating air 9, and is cooled and dehumidified as condensed water (condensed water). The dehumidified circulating air 9 is sent to the condenser 18 by the fan 17, heated there to become hot air, flows into the rotary drum 3 through the duct 13 and the air inlet 24, and evaporates moisture from the clothing 6 again. Let The condensed water dehumidified by the evaporator 15 is drained out of the apparatus through a drain drain pipe 21. During this time, the rotating drum 3 rotates continuously or intermittently at a preset number of rotations as in the washing process. In the above, the process which performs continuously from washing to drying was explained.
Japanese Examined Patent Publication No. 6-75628

しかしながら、前記従来の衣類乾燥装置の構成では、ヒートポンプサイクル内に封入された冷媒が外部に漏れた場合の検知手段が特に設けられておらず、冷媒が漏れた場合には冷媒回路全体の圧力が低下したり、冷媒循環量が不足したりする結果、能力が低下し、圧縮機19に過大な負荷がかかり機器としての寿命を縮めるという課題や、冷媒とともに圧縮機19内のモータ用の潤滑油が漏れ出し、圧縮機19を損傷するという課題を有していた。   However, in the configuration of the conventional clothes drying apparatus, there is not particularly provided a detection means when the refrigerant sealed in the heat pump cycle leaks to the outside, and when the refrigerant leaks, the pressure of the entire refrigerant circuit is increased. As a result of a decrease or a shortage of the refrigerant circulation amount, the capability is reduced, and an excessive load is applied to the compressor 19 to shorten the life of the device, and the lubricant for the motor in the compressor 19 together with the refrigerant Leaks and damages the compressor 19.

本発明は、上記従来の課題を解決するもので、冷媒が漏れたことを確実に検知し、圧縮機を保護することができる衣類乾燥装置を提供することを目的とするものである。   The present invention solves the above-described conventional problems, and an object of the present invention is to provide a clothes drying apparatus that can reliably detect leakage of a refrigerant and protect a compressor.

上記従来の課題を解決するために、本発明の衣類乾燥装置は、圧縮機と圧縮された冷媒の熱を放熱する放熱器と高圧の冷媒の圧力を減圧する絞り手段と減圧されて低圧となった冷媒で周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結して構成したヒートポンプ装置と、衣類を収容する乾燥庫と、前記圧縮機へ流入する電流値を検知する圧縮機流入電流検知手段と、乾燥用空気を送風する送風手段と、前記乾燥用空気を前記放熱器と前記乾燥庫を経て前記吸熱器へと導き再び放熱器に戻す循環風路と、前記管路の温度を検知する温度検知手段と、前記圧縮機を制御する制御手段とを備え、前記制御手段は、前記圧縮機へ流入する電流値と前記温度検知手段で検知された温度との関係を複数記憶し、前記圧縮機へ流入する電流値が所定の電流値以下の時に、前記温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにしたものである。 In order to solve the above-described conventional problems, the clothes drying apparatus of the present invention is reduced in pressure by a compressor, a radiator that radiates heat of the compressed refrigerant, a throttle means that reduces the pressure of the high-pressure refrigerant, and the pressure is reduced. A heat pump device connected by a pipe line so that the refrigerant circulates, and a heat absorber that takes heat away from the surroundings with the refrigerant, a drying cabinet for storing clothing, and a compression for detecting the current value flowing into the compressor Machine inflow current detection means, blowing means for blowing drying air, circulation air path for returning the drying air to the heat absorber through the radiator and the drying cabinet, and returning the heat to the radiator again, and the pipe line Temperature detecting means for detecting the temperature of the compressor, and control means for controlling the compressor, wherein the control means has a plurality of relations between the current value flowing into the compressor and the temperature detected by the temperature detecting means. stored, a current value flowing into the compressor Tokoro When: the current value of the temperature detected by said temperature detecting means becomes equal to or higher than a predetermined temperature, it is obtained so as to stop the compressor.

これにより、管路の温度と圧縮機へ流入する電流値から冷媒が漏れたことを検知することができ、冷媒が漏れた場合に圧縮機を停止させて保護することができる。   Thereby, it can be detected that the refrigerant has leaked from the temperature of the pipeline and the current value flowing into the compressor, and when the refrigerant has leaked, the compressor can be stopped and protected.

本発明の衣類乾燥装置は、冷媒が漏れた場合でも圧縮機を確実に保護することができる。   The clothes drying apparatus of the present invention can reliably protect the compressor even when the refrigerant leaks.

第1の発明は、圧縮機と圧縮された冷媒の熱を放熱する放熱器と高圧の冷媒の圧力を減
圧する絞り手段と減圧されて低圧となった冷媒で周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結して構成したヒートポンプ装置と、衣類を収容する乾燥庫と、前記圧縮機へ流入する電流値を検知する圧縮機流入電流検知手段と、乾燥用空気を送風する送風手段と、前記乾燥用空気を前記放熱器と前記乾燥庫を経て前記吸熱器へと導き再び放熱器に戻す循環風路と、前記管路の温度を検知する温度検知手段と、前記圧縮機を制御する制御手段とを備え、前記制御手段は、前記圧縮機へ流入する電流値と前記温度検知手段で検知された温度との関係を複数記憶し、前記圧縮機へ流入する電流値が所定の電流値以下の時に、前記温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにしたことにより、管路の温度と圧縮機へ流入する電流値から冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、冷媒が漏れた場合でも圧縮機を保護することができる衣類乾燥装置を実現することができる。
According to a first aspect of the present invention, there is provided a compressor, a radiator that radiates heat of the compressed refrigerant, a throttle means that depressurizes the pressure of the high-pressure refrigerant, and a heat absorber that draws heat from the surroundings by the reduced-pressure refrigerant. A heat pump device configured to be connected by a pipe line so that the refrigerant circulates, a drying chamber for storing clothes, a compressor inflow current detecting means for detecting a current value flowing into the compressor, and blowing air for drying Air blowing means, a circulation air passage that guides the drying air to the heat absorber through the radiator and the drying cabinet, and returns to the heat radiator again, a temperature detection means that detects the temperature of the pipe, and the compression Control means for controlling the machine, wherein the control means stores a plurality of relationships between the current value flowing into the compressor and the temperature detected by the temperature detecting means, and the current value flowing into the compressor is When the current value is below a predetermined value, the temperature detection means When the detected temperature is equal to or higher than a predetermined temperature, the compressor is stopped, and when it is detected that the refrigerant has leaked from the temperature of the pipeline and the current value flowing into the compressor, the control means By stopping the operation, it is possible to realize a clothes drying apparatus that can protect the compressor even when the refrigerant leaks.

第2の発明は、特に、第1の発明の衣類乾燥装置は、時間を計測する計時手段を具備し、制御手段は、衣類乾燥装置が動作を開始してから所定の時間以上経過した時に、圧縮機へ流入する電流値が所定の値以下になり、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにしたことにより、衣類乾燥装置が動作を開始してから所定の時間経過後に、管路の温度と圧縮機へ流入する電流値から冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、衣類や雰囲気の状態による影響が少なく精度のよい冷媒漏れ検知ができると共に、冷媒が漏れた場合でも圧縮機を保護することのできる衣類乾燥装置を実現することができる。   According to a second aspect of the invention, in particular, the clothes drying apparatus of the first aspect of the invention comprises a time measuring means for measuring time, and the control means is provided when a predetermined time or more has elapsed since the clothes drying apparatus started operating. When the value of the current flowing into the compressor falls below a predetermined value and the temperature detected by the temperature detecting means exceeds the predetermined temperature, the clothes drying apparatus starts operating by stopping the compressor. If a refrigerant leak is detected from the temperature of the pipeline and the current value flowing into the compressor after a predetermined time has elapsed, the compressor is stopped by the control means, thereby affecting the clothing and atmosphere conditions. It is possible to realize a clothing drying apparatus that can detect refrigerant leakage with low accuracy and can protect the compressor even when the refrigerant leaks.

第3の発明は、特に、第2の発明の制御手段は、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上である状態が所定の時間以上継続すると、前記圧縮機を停止するようにしたことにより、管路の温度と圧縮機へ流入する電流値が所定の条件を満たした状態を所定の時間継続することから冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、衣類や雰囲気の状態による影響が少なく精度のよい冷媒漏れ検知ができると共に、冷媒が漏れた場合でも圧縮機を保護することのできる衣類乾燥装置を実現することができる。   In the third aspect of the invention, in particular, the control means of the second aspect of the invention is such that the value of the current flowing into the compressor is not more than a predetermined value and the temperature detected by the temperature detecting means is not less than the predetermined temperature. If the compressor is stopped for a predetermined time or longer, the refrigerant leaks because the pipe temperature and the current value flowing into the compressor satisfy the predetermined condition for a predetermined time. When the fact is detected, the compressor is stopped by the control means, so that it is possible to detect the refrigerant leakage with high accuracy with little influence from the state of clothing and atmosphere, and it is possible to protect the compressor even when the refrigerant leaks. A clothes drying apparatus can be realized.

第4の発明は、特に、第1の発明の衣類乾燥装置は、送風手段の回転数を検知する回転数検知手段を具備し、制御手段は、前記送風手段が所定の回転数以上の時に、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにしたことにより、送風手段の回転数と管路の温度と圧縮機へ流入する電流値から冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、冷媒が漏れた場合でも圧縮機を保護することのできる衣類乾燥装置を実現することができる。 According to a fourth aspect of the invention, in particular, the clothes drying apparatus of the first aspect of the invention includes a rotational speed detection means for detecting the rotational speed of the blower means, and the control means is configured such that when the blower means has a predetermined rotational speed or more, When the value of the current flowing into the compressor is equal to or lower than a predetermined value and the temperature detected by the temperature detecting means is equal to or higher than the predetermined temperature, the compressor is stopped. A clothing drying device capable of protecting the compressor even when the refrigerant leaks by stopping the compressor by the control means when detecting that the refrigerant has leaked from the temperature of the pipeline and the current value flowing into the compressor Can be realized.

第5の発明は、特に、第4の発明の衣類乾燥装置は、時間を計測する計時手段を具備し、制御手段は、衣類乾燥装置が動作を開始してから所定の時間以上経過し、送風手段が所定の回転数以上で、かつ、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにしたことにより、衣類乾燥装置が動作を開始してから所定の時間経過後に送風手段の回転数と圧縮機へ流入する電流量と管路の温度から冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、衣類や雰囲気の状態による影響が少なく精度のよい冷媒漏れ検知ができると共に、冷媒が漏れた場合でも圧縮機を保護することのできる衣類乾燥装置を実現することができる。   According to a fifth aspect of the present invention, in particular, the clothes drying apparatus of the fourth aspect of the present invention comprises a time measuring means for measuring time, and the control means is operated after a predetermined time has elapsed since the clothes drying apparatus started to operate. When the means is equal to or higher than a predetermined number of revolutions, the current value flowing into the compressor is equal to or lower than a predetermined value, and the temperature detected by the temperature detecting means is equal to or higher than the predetermined temperature, the compressor is stopped. By detecting that the refrigerant has leaked from the rotational speed of the blower means, the amount of current flowing into the compressor, and the temperature of the pipe line after a lapse of a predetermined time from the start of the operation of the clothes drying device, the control means By stopping the compressor in accordance with the above, it is possible to realize a clothes drying apparatus that can accurately detect a refrigerant leak with little influence by the state of clothes and atmosphere and can protect the compressor even when the refrigerant leaks. it can.

第6の発明は、特に、第5の発明の制御手段は、送風手段が所定の回転数以上で、かつ、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上である状態が所定の時間以上継続すると、前記圧縮機を停止するようにした
ことにより、送風手段の回転数と圧縮機へ流入する電流量と管路の温度が所定の条件を満たした状態を所定の時間継続することから冷媒が漏れたことを検知すると、制御手段により圧縮機を停止させることにより、衣類や雰囲気の状態による影響が少なく精度のよい冷媒漏れ検知ができると共に、冷媒が漏れた場合でも圧縮機を保護することのできる衣類乾燥装置を実現することができる。
In the sixth aspect of the invention, in particular, the control means of the fifth aspect of the invention is characterized in that the air blowing means is equal to or higher than a predetermined rotational speed, the current value flowing into the compressor is equal to or lower than a predetermined value, and is detected by the temperature detecting means. When the state where the measured temperature is equal to or higher than the predetermined temperature continues for a predetermined time or longer, the compressor is stopped, so that the rotational speed of the blowing means, the amount of current flowing into the compressor, and the temperature of the pipe line are When it is detected that the refrigerant has leaked because the state satisfying the predetermined condition is continued for a predetermined period of time, the compressor is stopped by the control means, so that the influence of the state of clothing and atmosphere is small and the refrigerant leak detection is accurate. In addition, it is possible to realize a clothes drying apparatus that can protect the compressor even when the refrigerant leaks.

第7の発明は、特に、第1〜第6のいずれか1つの発明の衣類乾燥装置の温度検知手段は、圧縮機から放熱器の入口までの間の管路上に設けたことにより、冷媒の温度を検知して冷媒漏れを正しく検知できる。 In the seventh invention, in particular, the temperature detecting means of the clothes drying apparatus according to any one of the first to sixth inventions is provided on the pipe line between the compressor and the inlet of the radiator, It can detect the refrigerant correctly by detecting the temperature.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、本実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(実施の形態1)
図1は、本発明の第1の実施の形態における衣類乾燥装置を搭載した洗濯乾燥機を背面から見た斜視図、図2は、同洗濯乾燥機の側断面図である。
(Embodiment 1)
FIG. 1 is a perspective view of a washing / drying machine equipped with a clothes drying apparatus according to a first embodiment of the present invention as seen from the back, and FIG. 2 is a side sectional view of the washing / drying machine.

図1において、本実施の形態における洗濯乾燥機の洗濯乾燥機本体25(以下「本体25」という)内には、洗濯槽26があり、モータ27が取り付けられている。洗濯槽26は両側面のサスペンション29と上方部のサスペンション30によって支えられて本体25に取り付けられている。   In FIG. 1, a washing tub 26 is provided in a washing / drying machine main body 25 (hereinafter referred to as “main body 25”) of the washing / drying machine according to the present embodiment, and a motor 27 is attached. The washing tub 26 is attached to the main body 25 by being supported by suspensions 29 on both sides and an upper suspension 30.

本体25は、気化した冷媒を圧縮する圧縮機35と、圧縮後の高温高圧の冷媒の熱を放熱する放熱器36と、高圧の冷媒の圧力を減圧するための膨張弁、もしくは、キャピラリーチューブからなる絞り手段37と、減圧されて低圧となった冷媒が周囲から熱を奪う吸熱器38を順に接続して再び圧縮機35に冷媒が循環するように管路39で連結して構成したヒートポンプ装置51を具備している。   The main body 25 includes a compressor 35 that compresses the vaporized refrigerant, a radiator 36 that radiates heat of the compressed high-temperature and high-pressure refrigerant, an expansion valve for reducing the pressure of the high-pressure refrigerant, or a capillary tube. And a heat pump device constructed by connecting a throttling means 37 and a heat absorber 38, in which the reduced pressure and low pressure refrigerant removes heat from the surroundings, and connecting them by a conduit 39 so that the refrigerant circulates again to the compressor 35. 51.

風路40は、乾燥用空気を冷却する除湿手段としての前記吸熱器38と乾燥用空気を加熱する加熱手段としての前記放熱器36とを連通するように構成されている。洗濯槽26と風路40は、フレキシブルホース41、42によって接続されている。風路40には送風手段43が設けられている。洗濯槽26内部とフレキシブルホース41とを連通するダクト44は、洗濯槽26の外壁に設けられている。以上のように、フレキシブルホース42と、後述の回転ドラム28を収納する洗濯槽26と、ダクト44と、フレキシブルホース41と、風路40とで乾燥空気が循環する循環風路53が形成されている。矢印Bはダクト44と風路40内の乾燥用空気の流れを示している。   The air passage 40 is configured to communicate the heat absorber 38 as a dehumidifying means for cooling the drying air and the radiator 36 as a heating means for heating the drying air. The washing tub 26 and the air passage 40 are connected by flexible hoses 41 and 42. The air passage 40 is provided with air blowing means 43. A duct 44 that communicates the inside of the washing tub 26 and the flexible hose 41 is provided on the outer wall of the washing tub 26. As described above, a circulation air passage 53 through which dry air circulates is formed by the flexible hose 42, the washing tub 26 that houses the rotating drum 28 described later, the duct 44, the flexible hose 41, and the air passage 40. Yes. An arrow B indicates the flow of drying air in the duct 44 and the air passage 40.

図2において、衣類31を収容する乾燥庫となる回転ドラム28は、モータ27の軸27aに直結して洗濯槽26内に回転自在に取り付けられている。洗濯槽26と回転ドラム28の前面開口部に対応した位置には衣類31を投入するためのドア32が設けられている。本体25と洗濯槽26の間の隙間はベローズ33とドアパッキング34によって空気が本体25内部や機外に漏れないように略密封されている。回転ドラム28の側壁および底面部には洗濯水や乾燥用空気が出入りする複数の孔45と開口部46が設けられている。開口部56は、洗濯槽26内壁に設けられており、洗濯槽26とダクト44との風路を連通している。矢印Cは洗濯槽26と回転ドラム28内の乾燥用空気の流れを示している。   In FIG. 2, a rotating drum 28 serving as a drying cabinet for storing clothes 31 is directly connected to a shaft 27 a of a motor 27 and is rotatably mounted in the washing tub 26. A door 32 for loading clothes 31 is provided at a position corresponding to the front opening of the washing tub 26 and the rotary drum 28. A gap between the main body 25 and the washing tub 26 is substantially sealed by a bellows 33 and a door packing 34 so that air does not leak into the main body 25 or outside the machine. A plurality of holes 45 and openings 46 through which washing water and drying air enter and exit are provided on the side wall and bottom of the rotating drum 28. The opening 56 is provided on the inner wall of the washing tub 26 and communicates the air path between the washing tub 26 and the duct 44. An arrow C indicates the flow of drying air in the washing tub 26 and the rotary drum 28.

洗濯排水路47は、洗濯時の排水を流すものである。乾燥時に吸熱器38で発生した結露水は、水溜67で受けられる。水溜67の最底部69には、途中にポンプ68を有する結露排水路48の一端が接続され、結露排水路48の他端と洗濯排水路47とが一つの排
水管49につながれている。
The washing drainage channel 47 is a channel for draining wastewater during washing. Condensed water generated in the heat absorber 38 during drying is received in a water reservoir 67. One end of a condensation drainage channel 48 having a pump 68 is connected to the bottom 69 of the water reservoir 67, and the other end of the condensation drainage channel 48 and the washing drainage channel 47 are connected to one drainage pipe 49.

排水管49の先端50は、機外の大気中に開口している。洗濯排水路47と結露排水路48の合流部には1つの排水弁60が設けられ、洗濯排水路47と、結露排水路48と、排水管49と、排水弁60によって排水処理手段が構成されている。   The tip 50 of the drain pipe 49 is open to the atmosphere outside the machine. One drainage valve 60 is provided at the junction of the washing drainage channel 47 and the condensation drainage channel 48, and the drainage treatment means is constituted by the washing drainage channel 47, the condensation drainage channel 48, the drainage pipe 49, and the drainage valve 60. ing.

冷媒温度検知手段71は、圧縮機35から放熱器36の入口までの間の管路39上に近接して備えられ、冷媒の温度を検知する。圧縮機流入電流検知手段72は、圧縮機35へ流入する電流値を検知する。制御手段73は、圧縮機35の動作を制御する。計時手段74は、時間を計測する。   The refrigerant temperature detecting means 71 is provided close to the pipe line 39 between the compressor 35 and the inlet of the radiator 36, and detects the temperature of the refrigerant. The compressor inflow current detection means 72 detects the current value flowing into the compressor 35. The control unit 73 controls the operation of the compressor 35. The time measuring means 74 measures time.

以上のように構成された洗濯乾燥機について、以下、その動作、作用を説明する。洗濯、すすぎ、脱水までの洗濯工程で、水を溜める場合は、排水弁60により、洗濯排水路47側を閉じ、結露排水路48側を開くと、水供給バルブ(図示せず)から洗濯槽26に水が供給され、図2の水位Dの位置まで水が溜められる。   The operation and action of the washing / drying machine configured as described above will be described below. In the washing process from washing, rinsing and dewatering, when water is stored, the drainage valve 60 closes the washing drainage channel 47 side and opens the condensation drainage channel 48 side, and then the water supply valve (not shown) opens the washing tub. Water is supplied to 26, and water is accumulated up to the position of the water level D in FIG.

回転ドラム28がプログラムされた回転数で連続または間欠的に回転し、洗浄やすすぎが行なわれる。この間、衣類31は回転ドラム28の回転によって持ち上げられ落下する。排水する場合は、排水弁60により、洗濯排水路47側が開かれ、結露排水路48側が閉じられ、洗濯槽14の水が、洗濯排水路47と排水弁60を通過して排水管49から機外に排水される。   The rotating drum 28 rotates continuously or intermittently at a programmed number of rotations, and cleaning and rinsing are performed. During this time, the clothes 31 are lifted and dropped by the rotation of the rotary drum 28. When draining, the drainage valve 60 opens the washing drainage channel 47 side, the condensation drainage channel 48 side is closed, and the water in the washing tub 14 passes through the washing drainage channel 47 and the drainage valve 60 from the drainage pipe 49. Drained outside.

乾燥工程では、排水弁60により洗濯排水路47側が閉じられ、結露排水路48側が開かれ、圧縮機35、送風手段43及び回転ドラム28を駆動するモータ27が運転される。送風手段43の運転によって、乾燥用空気が、洗濯槽26、ダクト44、フレキシブルホース41、風路40、フレキシブルホース42の内部を通って循環する。衣類31は、あらかじめ設定された回転数で連続又は間欠的に回転する回転ドラム28によって撹拌される。   In the drying step, the drainage valve 60 closes the washing drainage channel 47 side, the condensation drainage channel 48 side is opened, and the motor 27 that drives the compressor 35, the blowing means 43, and the rotary drum 28 is operated. By the operation of the blowing means 43, the drying air circulates through the inside of the washing tub 26, the duct 44, the flexible hose 41, the air path 40, and the flexible hose 42. The clothing 31 is agitated by a rotating drum 28 that rotates continuously or intermittently at a preset number of rotations.

圧縮機35の運転によって、管路39内を冷媒が循環して、放熱器36で高温高圧の冷媒の熱を放熱して循環する乾燥用空気を加熱する。加熱された乾燥用空気は、図2の矢印Cのように、洗濯槽26内に送り込まれ、回転ドラム28の底面部に設けた開口部46を通過して衣類31に当たり、衣類31から水分を奪って、多湿の空気となって回転ドラム28の側壁に設けた多数の孔45を通過して、洗濯槽26の開口部56を経てダクト44へと送られる。ダクト44を通過した乾燥用空気は、矢印Bに示すように、フレキシブルホース41を通過して風路40に設けた除湿手段としての吸熱器38で、冷却除湿される。除湿された乾燥用空気は再び送風手段43によって放熱器36に送られて加熱される。   By the operation of the compressor 35, the refrigerant circulates in the pipe 39, and the heat of the high-temperature and high-pressure refrigerant is radiated by the radiator 36 to heat the drying air. The heated drying air is sent into the washing tub 26 as shown by an arrow C in FIG. 2, passes through the opening 46 provided in the bottom surface of the rotating drum 28, hits the clothing 31, and removes moisture from the clothing 31 The air is then taken as humid air, passes through a large number of holes 45 provided in the side wall of the rotary drum 28, and is sent to the duct 44 through the opening 56 of the washing tub 26. The drying air that has passed through the duct 44 passes through the flexible hose 41 and is dehumidified by a heat absorber 38 as a dehumidifying means provided in the air passage 40 as indicated by an arrow B. The dehumidified drying air is sent again to the radiator 36 by the blowing means 43 and heated.

圧縮機35は内部のモータが駆動する際の摩擦熱により加熱されるが、内部を通過する冷媒により熱を奪われることにより冷却されている。ここで、ヒートポンプ装置51から何らかの原因で冷媒が漏れ出た場合、冷媒量の減少により圧縮機35が冷媒により奪われる総熱量が減少するため、圧縮機35は通常時よりも高温となる。この時、圧縮機35の内部を通過する冷媒も通常時より高い温度まで加熱される。この結果、圧縮機流入電流検知手段72により検知される圧縮機35への流入電流が通常時と同程度またはそれより小さい値であっても、冷媒温度検知手段71により検知される冷媒の温度は通常時よりも高いものとなる。これにより、圧縮機35への流入電流値と冷媒の温度を検知することにより冷媒の漏れを検知することができる。   The compressor 35 is heated by frictional heat generated when the internal motor is driven, but is cooled by taking heat away from the refrigerant passing through the inside. Here, when the refrigerant leaks from the heat pump device 51 for some reason, the compressor 35 is heated to a higher temperature than normal because the total amount of heat taken by the compressor 35 by the refrigerant decreases due to the decrease in the refrigerant amount. At this time, the refrigerant passing through the compressor 35 is also heated to a temperature higher than normal. As a result, even if the inflow current to the compressor 35 detected by the compressor inflow current detection means 72 is a value that is about the same as or smaller than the normal time, the refrigerant temperature detected by the refrigerant temperature detection means 71 is It will be higher than normal. Thereby, the leakage of the refrigerant can be detected by detecting the value of the current flowing into the compressor 35 and the temperature of the refrigerant.

具体的には、標準的な冷媒量が封入されている場合の圧縮機35を電流値Inで運転した場合の冷媒の温度Trの値を制御手段73にて1つまたは複数記憶しておき、圧縮機3
5の運転中に、電流値がIn以下の時に、冷媒温度検知手段71により検知された冷媒の温度がTrよりも所定量ΔTr高い温度に設定した所定の温度Tthよりも高い温度になれば冷媒漏れと判断し、制御手段73により圧縮機35を停止させるようにする。このように、冷媒が漏れたことを検知して圧縮機35を停止させることより、冷媒が漏れた場合でも圧縮機35を保護することができる。
Specifically, the control means 73 stores one or more values of the refrigerant temperature Tr when the compressor 35 when the standard refrigerant amount is sealed is operated at the current value In. Compressor 3
If the refrigerant temperature detected by the refrigerant temperature detecting means 71 is higher than a predetermined temperature Tth set to a temperature higher by a predetermined amount ΔTr than Tr when the current value is equal to or less than In during the operation of No. 5 It is determined that there is a leak, and the compressor 35 is stopped by the control means 73. Thus, by detecting that the refrigerant has leaked and stopping the compressor 35, the compressor 35 can be protected even when the refrigerant has leaked.

以上のように、本実施の形態によれば、冷媒温度検知手段71と圧縮機流入電流検知手段72により検知した値から冷媒の漏れを検知し、制御手段73により圧縮機35を停止させることにより、冷媒が漏れた場合でも圧縮機35を確実に保護することのできる衣類乾燥装置を提供することができる。   As described above, according to the present embodiment, the refrigerant leakage is detected from the values detected by the refrigerant temperature detection means 71 and the compressor inflow current detection means 72, and the control means 73 stops the compressor 35. In addition, it is possible to provide a clothes drying apparatus that can reliably protect the compressor 35 even when the refrigerant leaks.

なお、上記実施の形態では、所定の条件を満たした場合に、直ちに冷媒漏れと判断することとしたが、計時手段74により、衣類乾燥装置が動作を開始してから所定時間経過後に冷媒漏れを判断するようにすれば、衣類や雰囲気の状態による影響を少なくすることができ、より精度良く冷媒漏れを検知することができる。   In the above embodiment, it is determined that the refrigerant leaks immediately when a predetermined condition is satisfied. However, the timer leaks the refrigerant leak after a lapse of a predetermined time from the start of the operation of the clothing drying apparatus. If it judges, the influence by the state of clothing or atmosphere can be reduced, and a refrigerant | coolant leak can be detected more accurately.

また、計時手段74により、衣類乾燥装置の特定の動作、例えば図示しない乾燥開始指示手段による乾燥開始指示や、圧縮機35の起動等を起点とし、その動作開始から所定時間経過後に冷媒漏れを判断するようにしても、同様の効果を得ることができる。   In addition, the timer 74 determines a specific operation of the clothes drying apparatus, for example, a drying start instruction by a drying start instruction means (not shown), activation of the compressor 35, and the like, and a refrigerant leak is determined after a predetermined time has elapsed from the start of the operation. Even if it does, the same effect can be acquired.

また、計時手段74により、冷媒漏れを判断するための所定の条件を満たした状態が、所定の時間以上継続した時に冷媒漏れと判断するようにしても、衣類や雰囲気の状態による影響を少なくすることができ、より精度良く冷媒漏れを検知することができる。   Further, even if the time keeping means 74 determines that the refrigerant leaks when the condition satisfying the predetermined condition for judging the refrigerant leak continues for a predetermined time or more, the influence of the clothing or atmosphere state is reduced. It is possible to detect refrigerant leakage with higher accuracy.

また、上記実施の形態では、放熱器36や吸熱器38を形成する熱交換器として、プレートフィン付きチューブ型熱交換器を示しているが、特にその形態を限定するものではない。   Moreover, in the said embodiment, although the tube type heat exchanger with a plate fin is shown as a heat exchanger which forms the heat radiator 36 and the heat absorber 38, the form is not specifically limited.

また、本実施の形態では洗濯乾燥機を例に説明したが、衣類の乾燥のみを行う衣類乾燥機に於いても同様の効果が得られるのは、言うまでも無い。   In the present embodiment, the washing / drying machine has been described as an example, but it goes without saying that the same effect can be obtained even in a clothes drying machine that only dries clothes.

(実施の形態2)
図3は、本発明の第2の実施の形態における衣類乾燥装置を搭載した洗濯乾燥機の側断面図である。なお、上記第1の実施の形態と同一部分については同一符号を付して詳細な説明は省略する。
(Embodiment 2)
FIG. 3 is a side sectional view of a washing / drying machine equipped with a clothes drying apparatus according to the second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

本実施の形態は、図3に示すように、送風手段43の回転数を検知する回転数検知手段75を設け、送風手段43の回転数が所定の回転数と同じかまたは大きいかで、冷媒漏れの判定を行うようにしたものである。本来、送風手段43は、所定の回転数で運転するよう制御されており、標準的な冷媒量が封入された場合に圧縮機35を電流値Inで運転した場合の冷媒の温度Trの値も送風手段43が所定の回転数で運転されていることを前提として制御手段73に記憶されている。   As shown in FIG. 3, the present embodiment is provided with a rotation speed detection means 75 that detects the rotation speed of the air blowing means 43, and whether the rotation speed of the air blowing means 43 is equal to or greater than the predetermined rotation speed, The leak is judged. Originally, the air blowing means 43 is controlled to operate at a predetermined number of revolutions, and when the standard amount of refrigerant is sealed, the value of the refrigerant temperature Tr when the compressor 35 is operated at the current value In is also provided. It is stored in the control means 73 on the assumption that the blower means 43 is operated at a predetermined rotational speed.

このため、回転数検知手段75により送風手段43の回転数が所定の回転数と同じかまたは大きい場合にのみ冷媒漏れの判定を行うことにより、判定の信頼性を高めることができる。   For this reason, it is possible to improve the reliability of the determination by determining the refrigerant leakage only when the rotational speed detecting means 75 determines that the rotational speed of the air blowing means 43 is equal to or larger than the predetermined rotational speed.

以上のように、本実施の形態によれば、回転数検知手段75と冷媒温度検知手段71と圧縮機流入電流検知手段72により検知した値から冷媒の漏れを検知し、制御手段73により圧縮機35を停止させることにより、冷媒が漏れた場合でも圧縮機35を保護するこ
とができる衣類乾燥装置を実現することができる。
As described above, according to the present embodiment, refrigerant leakage is detected from the values detected by the rotation speed detection means 75, the refrigerant temperature detection means 71, and the compressor inflow current detection means 72, and the control means 73 detects the compressor. By stopping 35, it is possible to realize a clothes drying apparatus that can protect the compressor 35 even when the refrigerant leaks.

なお、本実施の形態では、所定の条件を満たした場合に直ちに冷媒漏れと判断することとしたが、上記第1の実施の形態と同様に、計時手段74を用いて、衣類乾燥装置が動作を開始してから所定時間経過後に冷媒漏れを判断するようにしたり、衣類乾燥装置の特定の動作、例えば図示しない乾燥開始指示手段による乾燥開始指示や、圧縮機35の起動等を起点とし、その動作開始から所定時間経過後に冷媒漏れを判断するようにしたり、冷媒漏れを判定するための所定の条件を満たした状態が所定の時間以上継続した時に冷媒漏れと判断するようにすれば、衣類や雰囲気の状態による影響を少なくすることができ、より精度良く冷媒漏れを検知することができる。   In this embodiment, it is determined that the refrigerant leaks immediately when a predetermined condition is satisfied. However, as in the first embodiment, the clothing drying apparatus operates using the time measuring means 74. The refrigerant leakage is judged after a lapse of a predetermined time from the start of the operation, or a specific operation of the clothes drying apparatus, for example, a drying start instruction by a drying start instruction means (not shown), starting of the compressor 35, etc. If the refrigerant leak is judged after a predetermined time has elapsed from the start of the operation, or if a condition satisfying a predetermined condition for judging the refrigerant leak continues for a predetermined time or longer, it is determined that the refrigerant leaks. The influence of the atmosphere state can be reduced, and refrigerant leakage can be detected with higher accuracy.

また、本実施の形態では洗濯乾燥機を例に説明したが、乾燥のみを行う衣類乾燥機に於いても同様の効果が得られるものである。   In the present embodiment, the washing / drying machine is described as an example, but the same effect can be obtained in a clothes drying machine that performs only drying.

以上のように、本発明にかかる衣類乾燥装置は、冷媒が漏れたことを確実に検知し、圧縮機を保護することができるもので、一般家庭で使用される洗濯と乾燥を同一槽で行う乾燥機能付き洗濯機や乾燥のみを行う衣類乾燥機に広く適用できる。   As described above, the clothes drying apparatus according to the present invention can reliably detect the leakage of the refrigerant and protect the compressor, and performs washing and drying used in a general household in the same tank. It can be widely applied to washing machines with a drying function and clothes dryers that only dry.

本発明の第1の実施の形態における衣類乾燥装置を搭載した洗濯乾燥機を背面から見た斜視図The perspective view which looked at the washing-drying machine carrying the clothing drying apparatus in the 1st Embodiment of this invention from the back 同洗濯乾燥機の側断面図Side sectional view of the washer / dryer 本発明の第2の実施の形態における衣類乾燥装置を搭載した洗濯乾燥機の側断面図Side sectional view of a washing and drying machine equipped with a clothes drying apparatus according to a second embodiment of the present invention 従来の洗濯乾燥機の側断面図Side view of a conventional washer-dryer

26 洗濯槽
28 回転ドラム(乾燥庫)
35 圧縮機
36 放熱器
37 絞り手段
38 吸熱器
39 管路
40 風路
43 送風手段
51 ヒートポンプ装置
53 循環風路
71 冷媒温度検知手段
72 圧縮機流入電流検知手段
73 制御手段
74 計時手段
75 回転数検知手段
26 Laundry tub 28 Rotating drum (dryer)
35 Compressor 36 Radiator 37 Throttle means 38 Heat absorber 39 Pipe line 40 Air path 43 Air blow means 51 Heat pump device 53 Circulation air path 71 Refrigerant temperature detection means 72 Compressor inflow current detection means 73 Control means 74 Timing means 75 Speed detection means

Claims (7)

圧縮機と圧縮された冷媒の熱を放熱する放熱器と高圧の冷媒の圧力を減圧する絞り手段と減圧されて低圧となった冷媒で周囲から熱を奪う吸熱器とを冷媒が循環するように管路で連結して構成したヒートポンプ装置と、衣類を収容する乾燥庫と、前記圧縮機へ流入する電流値を検知する圧縮機流入電流検知手段と、乾燥用空気を送風する送風手段と、前記乾燥用空気を前記放熱器と前記乾燥庫を経て前記吸熱器へと導き再び放熱器に戻す循環風路と、前記管路の温度を検知する温度検知手段と、前記圧縮機を制御する制御手段とを備え、前記制御手段は、前記圧縮機へ流入する電流値と前記温度検知手段で検知された温度との関係を複数記憶し、前記圧縮機へ流入する電流値が所定の電流値以下の時に、前記温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにした衣類乾燥装置。 The refrigerant circulates between the compressor and the radiator that radiates the heat of the compressed refrigerant, the throttle means that depressurizes the pressure of the high-pressure refrigerant, and the heat absorber that draws heat from the surroundings with the reduced-pressure and low-pressure refrigerant. A heat pump device connected by a pipe, a drying cabinet for storing clothes, a compressor inflow current detecting means for detecting a current value flowing into the compressor, a blowing means for blowing drying air, A circulation air passage that guides drying air to the heat absorber through the radiator and the drying cabinet and returns the air to the radiator again, temperature detection means for detecting the temperature of the pipe, and control means for controlling the compressor The control means stores a plurality of relationships between the current value flowing into the compressor and the temperature detected by the temperature detecting means, and the current value flowing into the compressor is less than a predetermined current value. Sometimes, the temperature detected by the temperature detecting means is Becomes more than a constant temperature, the clothes drying apparatus adapted to stop the compressor. 時間を計測する計時手段を具備し、制御手段は、衣類乾燥装置が動作を開始してから所定の時間以上経過した時に、圧縮機へ流入する電流値が所定の値以下になり、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにした請求項1記載の衣類乾燥装置。 A time measuring means for measuring time, and the control means is a temperature detecting means when the current flowing into the compressor becomes less than or equal to a predetermined value when a predetermined time or more has elapsed since the operation of the clothing drying apparatus. 2. The clothes drying apparatus according to claim 1, wherein the compressor is stopped when the temperature detected in step S1 is equal to or higher than a predetermined temperature. 制御手段は、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上である状態が所定の時間以上継続すると、前記圧縮機を停止するようにした請求項2記載の衣類乾燥装置。 The control means stops the compressor when the value of the current flowing into the compressor is equal to or lower than a predetermined value and the temperature detected by the temperature detecting means is higher than the predetermined temperature for a predetermined time or longer. The clothes drying apparatus according to claim 2 which was made. 送風手段の回転数を検知する回転数検知手段を具備し、制御手段は、前記送風手段が所定の回転数以上の時に、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにした請求項1記載の衣類乾燥装置。 Rotational speed detection means for detecting the rotational speed of the blower means is provided, and the control means is configured to detect a temperature when a current value flowing into the compressor is less than a predetermined value when the blower means has a predetermined rotational speed or more. 2. The clothes drying apparatus according to claim 1, wherein the compressor is stopped when the temperature detected by the means exceeds a predetermined temperature. 時間を計測する計時手段を具備し、制御手段は、衣類乾燥装置が動作を開始してから所定の時間以上経過し、送風手段が所定の回転数以上で、かつ、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上になると、前記圧縮機を停止するようにした請求項4記載の衣類乾燥装置。 Time measuring means for measuring time, and the control means is a current value that has passed a predetermined time or more after the clothing drying apparatus has started to operate, the blowing means is at a predetermined rotation speed or higher, and flows into the compressor. 5. The clothes drying apparatus according to claim 4, wherein the compressor is stopped when the temperature is not more than a predetermined value and the temperature detected by the temperature detecting means is not less than the predetermined temperature. 制御手段は、送風手段が所定の回転数以上で、かつ、圧縮機へ流入する電流値が所定の値以下で、かつ、温度検知手段で検知された温度が所定の温度以上である状態が所定の時間以上継続すると、前記圧縮機を停止するようにした請求項5記載の衣類乾燥装置。 The control means has a predetermined state in which the air blowing means is equal to or higher than a predetermined number of revolutions, the current value flowing into the compressor is equal to or lower than a predetermined value, and the temperature detected by the temperature detecting means is equal to or higher than the predetermined temperature. The clothes drying apparatus according to claim 5, wherein the compressor is stopped if the compressor continues for more than a predetermined time. 温度検知手段は、圧縮機から放熱器の入口までの間の管路上に設けた請求項1〜6のいずれか1項に記載の衣類乾燥装置。 The clothes drying apparatus according to any one of claims 1 to 6, wherein the temperature detection means is provided on a pipe line between the compressor and the inlet of the radiator.
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