JP2000258020A - Freezer/refrigerator - Google Patents
Freezer/refrigeratorInfo
- Publication number
- JP2000258020A JP2000258020A JP11064914A JP6491499A JP2000258020A JP 2000258020 A JP2000258020 A JP 2000258020A JP 11064914 A JP11064914 A JP 11064914A JP 6491499 A JP6491499 A JP 6491499A JP 2000258020 A JP2000258020 A JP 2000258020A
- Authority
- JP
- Japan
- Prior art keywords
- evaporator
- refrigerator
- temperature
- refrigerant
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は冷凍冷蔵庫に関し、
更に詳しくは、冷凍室及び冷蔵室を含む冷蔵庫本体と、
この冷蔵庫本体内部を冷却する冷却システムとを備え、
この冷却システムが、圧縮機と、凝縮器と、減圧手段
と、冷凍室内に設けられた第１の蒸発器と、冷蔵室内に
設けられた第２の蒸発器とを順次直列に接続して成るも
のである冷凍冷蔵庫の改良に関するものである。TECHNICAL FIELD The present invention relates to a refrigerator and a refrigerator.
More specifically, a refrigerator body including a freezer compartment and a refrigerator compartment,
A cooling system for cooling the inside of the refrigerator body,
This cooling system is configured by sequentially connecting a compressor, a condenser, a decompression unit, a first evaporator provided in a freezing room, and a second evaporator provided in a refrigerator room in series. The present invention relates to an improvement of a refrigerator-freezer.
【０００２】[0002]
【従来の技術】一般に、冷凍冷蔵庫の冷却システムは、
圧縮機から吐出された冷媒が凝縮器、減圧手段、蒸発器
を順次通過して再び圧縮機に戻る冷却サイクルを構成
し、冷蔵室と冷凍室の二つの異なる温度の空間を一つの
蒸発器と一つの冷気循環ファンで冷却するようになって
いる。このように一つの蒸発器で温度の異なる複数の室
を冷却する場合には、温度制御のための通風経路が複雑
になり、水蒸気を多量に含む冷蔵室内の空気が蒸発器
（冷凍室を冷却し得るように低い温度になっている）の
近傍を流れるため着霜量が多くなり、野菜室が乾燥する
等の問題点があった。2. Description of the Related Art Generally, a cooling system for a refrigerator is
The refrigerant discharged from the compressor constitutes a cooling cycle in which the refrigerant sequentially passes through the condenser, the decompression means, and the evaporator and returns to the compressor again, and the two different temperature spaces of the refrigerating room and the freezing room are combined with one evaporator. It is designed to cool with one cool air circulation fan. When a plurality of chambers having different temperatures are cooled by a single evaporator, the ventilation path for controlling the temperature becomes complicated, and the air in the refrigerating room containing a large amount of water vapor is cooled by the evaporator (cooling the freezing room). (The temperature is low so that the temperature can be reduced) so that the amount of frost increases and the vegetable room is dried.
【０００３】そこで、冷凍室と冷蔵室にそれぞれ蒸発器
とファンを設置した冷凍冷蔵庫が提案されている。この
種の冷凍冷蔵庫は、例えば特開平８−２１０７５３号公
報に開示されているように、圧縮機と、凝縮器と、減圧
手段と、冷凍室内に設けられた第１の蒸発器と、冷蔵室
内に設けられた第２の蒸発器とを順次直列に接続して成
る冷却システムを備えており、各蒸発器の近傍にそれぞ
れファンが設置されている。[0003] Therefore, a refrigerator having an evaporator and a fan installed in a freezer compartment and a refrigerator compartment has been proposed. This type of refrigerator-freezer includes a compressor, a condenser, a decompression means, a first evaporator provided in a freezing chamber, a refrigerator, And a second evaporator arranged in series is connected in series, and a cooling system is provided near each evaporator.
【０００４】図５はその冷凍冷蔵庫の概略構成を示して
おり、圧縮機１０３により高温高圧に圧縮された気体状
の冷媒が凝縮器１０４によって凝縮し、減圧手段１０５
によって減圧されて膨張した後、冷凍室１０１内に設け
られた第１の蒸発器１０６と冷蔵室１０２内に設けられ
た第２の蒸発器１０７とを通過する間に蒸発し、冷凍室
送風ファン１０８及び冷蔵室送風ファン１０９によって
第１の蒸発器１０６と第２の蒸発器１０７を通過する空
気の熱を奪うようになっている。FIG. 5 shows a schematic configuration of the refrigerator-freezer. A gaseous refrigerant compressed to a high temperature and a high pressure by a compressor 103 is condensed by a condenser 104 and decompressed by a decompression means 105.
After being decompressed and expanded by the pressure, it evaporates while passing through the first evaporator 106 provided in the freezing room 101 and the second evaporator 107 provided in the refrigerating room 102, and a fan for the freezing room The heat of the air passing through the first evaporator 106 and the second evaporator 107 is taken by the fan 108 and the refrigerator fan 109.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな構成の冷凍冷蔵庫においては、冷凍室１０１内に設
けられた第１の蒸発器１０６への着霜量は少なくなるも
のの、冷蔵室１０２内に設けられた第２の蒸発器１０７
への着霜量が多くなるという問題点があった。これは、
第２の蒸発器１０７に流れ込む冷媒は液体を多く含んで
おり、速やかに温度が上昇しにくいため、第２の蒸発器
１０７の温度が第１の蒸発器１０６とほぼ同じ温度にな
り、これによって第２の蒸発器１０７の温度と冷蔵室１
０２内の空気の温度との差が大きくなることによるもの
である。However, in the refrigerating refrigerator having such a configuration, although the amount of frost formed on the first evaporator 106 provided in the freezing room 101 is reduced, the amount of frost formed in the refrigerating room 102 is reduced. The provided second evaporator 107
There is a problem that the amount of frost formed on the surface increases. this is,
Since the refrigerant flowing into the second evaporator 107 contains a large amount of liquid and the temperature does not easily rise quickly, the temperature of the second evaporator 107 becomes almost the same as that of the first evaporator 106. Temperature of second evaporator 107 and refrigerator compartment 1
This is because the difference from the temperature of the air in the area 02 becomes large.
【０００６】また、各蒸発器に対してそれぞれ除霜ヒー
タを設けなくてはならないという問題点と、除霜を行う
場合には冷凍システムを停止させるため、冷凍室１０１
のみの除霜の場合でも冷蔵室１０２の温度が上昇し、除
霜終了後に冷蔵室１０２の温度を所定温度まで降下させ
なければならないため、無駄な電力を消費するという問
題点とがあった。[0006] In addition, a defrost heater must be provided for each evaporator, and the refrigeration system must be stopped when defrosting.
Even in the case of only defrosting, the temperature of the refrigerator compartment 102 rises, and the temperature of the refrigerator compartment 102 must be lowered to a predetermined temperature after the completion of the defrost, so that there is a problem that wasteful power is consumed.
【０００７】本発明は上述した問題点を解決するために
なされたものであって、第１の目的は、冷蔵室内に設け
られた第２の蒸発器への着霜量を減少させることができ
る冷凍冷蔵庫を提供することにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a first object of the present invention is to reduce the amount of frost formed on a second evaporator provided in a refrigerator. An object of the present invention is to provide a refrigerator-freezer.
【０００８】また、本発明の第２の目的は、冷凍室内に
設けられた第１の蒸発器を除霜ヒータを使用せずに短時
間で除霜することができるとともに、消費電力量を低減
することができる冷凍冷蔵庫を提供することにある。[0008] A second object of the present invention is to defrost a first evaporator provided in a freezing room in a short time without using a defrost heater and to reduce power consumption. It is an object of the present invention to provide a refrigerator-freezer.
【０００９】[0009]
【課題を解決するための手段】上述した目的を達成する
ために、請求項１の発明は、冷凍室及び冷蔵室を含む冷
蔵庫本体と、この冷蔵庫本体内部を冷却する冷却システ
ムとを備え、この冷却システムが、圧縮機と、凝縮器
と、減圧手段と、前記冷凍室内に設けられた第１の蒸発
器と、前記冷蔵室内に設けられた第２の蒸発器とを順次
直列に接続して成るものである冷凍冷蔵庫において、前
記第１の蒸発器の温度を検出する第１の温度検出手段
と、前記第２の蒸発器の温度を検出する第２の温度検出
手段と、前記第１及び第２の温度検出手段によって検出
された温度に基づいて前記圧縮機を制御し、前記圧縮機
から吐出される冷媒の量を前記第１の蒸発器を通過する
間にほぼ全てが蒸発するように調節する圧縮機制御手段
とを設けたことを特徴とするものである。According to a first aspect of the present invention, there is provided a refrigerator having a freezer compartment and a refrigerator compartment, and a cooling system for cooling the interior of the refrigerator. A cooling system sequentially connects a compressor, a condenser, a decompression unit, a first evaporator provided in the freezing chamber, and a second evaporator provided in the refrigerator compartment in series. A first temperature detecting means for detecting a temperature of the first evaporator; a second temperature detecting means for detecting a temperature of the second evaporator; The compressor is controlled based on the temperature detected by the second temperature detecting means so that almost all of the refrigerant discharged from the compressor is evaporated while passing through the first evaporator. And a compressor control means for adjusting. It is intended to.
【００１０】このような構成によれば、圧縮機から吐出
される冷媒のほぼ全てが第１の蒸発器で気化され、冷媒
は第２の蒸発器に流れ込むと速やかに温度が上昇するた
め、第２の蒸発器の温度低下が少なくなり、第２の蒸発
器への着霜量が減少する。According to such a configuration, almost all of the refrigerant discharged from the compressor is vaporized in the first evaporator, and the temperature of the refrigerant rises quickly when flowing into the second evaporator. The temperature drop of the second evaporator is reduced, and the amount of frost on the second evaporator is reduced.
【００１１】また、請求項２の発明は、請求項１の冷凍
冷蔵庫において、前記第１の蒸発器と前記第２の蒸発器
の間に気液分離器を設けたことを特徴とするものであ
る。According to a second aspect of the present invention, in the refrigerator-freezer of the first aspect, a gas-liquid separator is provided between the first evaporator and the second evaporator. is there.
【００１２】この場合、第２の蒸発器に気体状の冷媒が
優先的に流れ込むため、第２の蒸発器の温度低下がより
少なくなり、第２の蒸発器への着霜量がより減少する。In this case, since the gaseous refrigerant flows into the second evaporator preferentially, the temperature of the second evaporator is less reduced, and the amount of frost on the second evaporator is further reduced. .
【００１３】また、請求項３の発明は、冷凍室及び冷蔵
室を含む冷蔵庫本体と、この冷蔵庫本体内部を冷却する
冷却システムとを備え、この冷却システムが、圧縮機
と、凝縮器と、減圧手段と、前記冷凍室内に設けられた
第１の蒸発器と、前記冷蔵室内に設けられた第２の蒸発
器とを順次直列に接続して成るものである冷凍冷蔵庫に
おいて、前記減圧手段が、冷媒に減圧処理を行う状態と
冷媒に減圧処理を行わずに通過させる状態とのいずれか
を選択し得るように構成され、前記第１の蒸発器と前記
第２の蒸発器の間に前記減圧手段と同様に構成された減
圧手段を設けたことを特徴とするものである。Further, the invention of claim 3 includes a refrigerator body including a freezing room and a refrigerator room, and a cooling system for cooling the inside of the refrigerator body. The cooling system comprises a compressor, a condenser, Means, a first evaporator provided in the freezer compartment, and a second evaporator provided in the refrigerator compartment connected in series in a refrigerator-freezer, the decompression means, It is configured to be able to select one of a state in which the refrigerant is subjected to a decompression process and a state in which the refrigerant is passed without performing the decompression process, and the decompression is performed between the first evaporator and the second evaporator. And a pressure reducing means configured similarly to the means.
【００１４】この場合、凝縮器と第１の蒸発器の間に設
けられた減圧手段を冷媒に減圧処理を行わない状態に
し、第１の蒸発器と第２の蒸発器の間の減圧手段を冷媒
に減圧処理を行う状態にすることにより、第１の蒸発器
における冷媒の蒸発・凝縮温度が氷点以上になり、第１
の蒸発器表面に付着した霜に熱を与えて溶かすことがで
きる。また、第１の蒸発器と第２の蒸発器の間の減圧手
段で減圧された冷媒は第２の蒸発器で蒸発し、第２の蒸
発器を通過する冷蔵室内の空気から熱を奪うため、冷蔵
室内が冷却される。したがって、冷蔵室の温度を上昇さ
せずに第１の蒸発器の除霜を行うことができる。In this case, the pressure reducing means provided between the condenser and the first evaporator is set to a state in which the refrigerant is not subjected to the pressure reducing process, and the pressure reducing means between the first evaporator and the second evaporator is changed to a state. By setting the refrigerant to a state in which the refrigerant is subjected to the decompression process, the temperature at which the refrigerant evaporates and condenses in the first evaporator becomes higher than the freezing point, and
The frost adhering to the evaporator surface can be melted by applying heat. Further, the refrigerant decompressed by the decompression means between the first evaporator and the second evaporator evaporates in the second evaporator and takes heat from the air in the refrigerator compartment passing through the second evaporator. Then, the refrigerator compartment is cooled. Therefore, the first evaporator can be defrosted without increasing the temperature of the refrigerator compartment.
【００１５】[0015]
【発明の実施の形態】以下、本発明の具体的な実施形態
を図面を参照しながら説明する。図１は本発明の一実施
形態である冷凍冷蔵庫１の概略構成を示す図、図２は冷
凍冷蔵庫１の通常運転時における冷媒の流れを示す説明
図、図３は冷凍冷蔵庫１の通常運転時における圧縮機６
からの冷媒の吐出量の制御方法を示すフローチャート、
図４は冷凍冷蔵庫１の冷凍室除霜運転時における冷媒の
流れを示す説明図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of a refrigerator 1 according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a flow of refrigerant during normal operation of the refrigerator 1, and FIG. Compressor 6
Flow chart showing a control method of the discharge amount of the refrigerant from the,
FIG. 4 is an explanatory diagram showing the flow of the refrigerant during the freezing compartment defrosting operation of the refrigerator 1.
【００１６】図１に示すように、冷凍冷蔵庫１は、冷凍
室３及び冷蔵室４を含む冷蔵庫本体２と、この冷蔵庫本
体２の内部を冷却する冷却システム５（図２参照）とを
備えており、冷却システム５は、圧縮機６と、凝縮器７
と、第１の減圧手段８と、冷凍室３内に設けられた第１
の蒸発器９と、第２の減圧手段１０と、冷蔵室４内に設
けられた第２の蒸発器１１とを管路１２を介して順次直
列に接続することにより構成されている。As shown in FIG. 1, the refrigerator 1 includes a refrigerator main body 2 including a freezer compartment 3 and a refrigerator compartment 4, and a cooling system 5 (see FIG. 2) for cooling the inside of the refrigerator main body 2. The cooling system 5 includes a compressor 6 and a condenser 7
A first pressure reducing means 8 and a first pressure reducing means 8 provided in the freezing compartment 3.
The evaporator 9, the second decompression means 10, and the second evaporator 11 provided in the refrigerator compartment 4 are sequentially connected in series via a pipe 12.
【００１７】第１の減圧手段８は、管路１２中に設けら
れた第１の減圧器１３と、第１の減圧器１３に対して並
列的に設けられ、両端がそれぞれ管路１２における第１
の減圧器１３よりも上流側の部分と下流側の部分とに接
続されたバイパス管１４と、管路１２における第１の減
圧器１３よりも上流側の部分とバイパス管１４との接続
点に設けられた第１の切換弁１５とから成っており、第
１の切換弁１５を切り換えることにより、冷媒が第１の
減圧器１３を通過する流路と、冷媒がバイパス管１４を
通過する流路とのいずれかを選択し得るようになってい
る。The first decompression means 8 is provided in parallel with the first decompressor 13 provided in the pipe 12 and the first decompressor 13, and both ends of the first decompressor 13 are provided in the pipe 12. 1
A bypass pipe 14 connected to a portion upstream of the pressure reducer 13 and a portion downstream thereof, and a connection point between the portion of the pipe 12 upstream of the first pressure reducer 13 and the bypass pipe 14. The first switching valve 15 is provided. By switching the first switching valve 15, the refrigerant flows through the first pressure reducer 13 and the refrigerant flows through the bypass pipe 14. You can choose either the road or the road.
【００１８】第２の減圧手段１０は、両端がそれぞれ管
路１２における第１の蒸発器９と第２の蒸発器１１の間
の部分に接続された第２の減圧器１７と、第２の減圧器
１７における上流側の端部と管路１２との接続点に設け
られた第２の切換弁１８とから成っている。また、管路
１２における第２の減圧器１７との二つの接続点の間の
部分には気液分離器１９が設けられている。第２の切換
弁１８を切り換えることにより、冷媒が第２の減圧器１
７を通過する流路と、冷媒が気液分離器１９を通過する
流路とのいずれかを選択し得るようになっている。The second decompression means 10 includes a second decompression device 17 having both ends connected to portions of the pipe 12 between the first evaporator 9 and the second evaporator 11, respectively. It comprises a second switching valve 18 provided at a connection point between the upstream end of the pressure reducer 17 and the pipeline 12. Further, a gas-liquid separator 19 is provided in a portion of the pipe 12 between two connection points with the second decompressor 17. By switching the second switching valve 18, the refrigerant is supplied to the second decompressor 1
7 and a flow path through which the refrigerant passes through the gas-liquid separator 19.
【００１９】第１の蒸発器９の近傍には冷凍室送風ファ
ン２０が設置され、第２の蒸発器１１の近傍には冷蔵室
送風ファン２１が設置されており、これらを駆動するこ
とにより第１及び第２の蒸発器９、１１がそれぞれを通
過する空気から効果的に熱を奪うようになるとともに、
冷凍室３及び冷蔵室４の内部の温度を均一化することが
できる。また、凝縮器７の近傍には凝縮器冷却ファン２
２が設置されている。A freezing room blower fan 20 is installed near the first evaporator 9, and a refrigerating room blower fan 21 is installed near the second evaporator 11. The first and second evaporators 9 and 11 effectively remove heat from the air passing therethrough,
The temperatures inside the freezer compartment 3 and the refrigerator compartment 4 can be made uniform. In the vicinity of the condenser 7, a condenser cooling fan 2 is provided.
2 are installed.
【００２０】また、図１に示すように、第１の蒸発器９
には第１の温度検出手段２３が設けられ、第２の蒸発器
１１には第２の温度検出手段２４が設けられており、こ
れらはそれぞれ圧縮機制御手段２５に接続されている。
圧縮機制御手段２５は電気回路により構成され、第１及
び第２の温度検出手段２３、２４によって検出された温
度に基づいて圧縮機６の回転数を制御し、圧縮機から吐
出される冷媒の量を第１の蒸発器９を通過する間にほぼ
全てが蒸発するように調節する。As shown in FIG. 1, the first evaporator 9
Is provided with first temperature detecting means 23, and second evaporator 11 is provided with second temperature detecting means 24, which are connected to compressor control means 25, respectively.
The compressor control unit 25 is configured by an electric circuit, controls the rotation speed of the compressor 6 based on the temperatures detected by the first and second temperature detection units 23 and 24, and controls the refrigerant discharged from the compressor. The volume is adjusted so that almost everything evaporates while passing through the first evaporator 9.
【００２１】上述した構成の冷凍冷蔵庫１の通常運転の
場合には、図２に示すように、第１の減圧手段８の第１
の切換弁１５が冷媒を第１の減圧器１３に通すように切
り換えられ、第２の減圧手段１０の第２の切換弁１８が
冷媒を気液分離器１９に通すように切り換えられる。ま
た、凝縮器冷却ファン２２が駆動される。圧縮機６によ
って高温高圧に圧縮された気体状の冷媒は凝縮器７によ
り凝縮し、第１の減圧器１３により蒸発・凝縮温度が−
３０℃程度になるまで減圧される。In the case of the normal operation of the refrigerator 1 having the above-described structure, as shown in FIG.
Is switched so that the refrigerant passes through the first decompressor 13, and the second switching valve 18 of the second decompression means 10 is switched so that the refrigerant passes through the gas-liquid separator 19. Further, the condenser cooling fan 22 is driven. The gaseous refrigerant compressed to a high temperature and a high pressure by the compressor 6 is condensed by the condenser 7, and the first decompressor 13 reduces the evaporation / condensation temperature by −
The pressure is reduced to about 30 ° C.
【００２２】減圧された冷媒は第１の蒸発器９を通過す
る間に蒸発し、冷凍室送風ファン２０により第１の蒸発
器９を通過する冷凍室３内の空気の熱を奪う。このと
き、図３に示すように、第１の温度検出手段２３によっ
て検出された第１の蒸発器９の温度があらかじめ設定さ
れた第１の蒸発器９の目標温度より高くなったときには
圧縮機６からの冷媒の吐出量を増加させ、第２の温度検
出手段２４によって検出された第２の蒸発器１１の温度
があらかじめ設定された第２の蒸発器１１の目標温度よ
り低くなったときには圧縮機６からの冷媒の吐出量を減
少させるように圧縮機制御手段２５により圧縮機６の回
転数が制御される。The depressurized refrigerant evaporates while passing through the first evaporator 9, and takes away heat of the air in the freezing room 3 passing through the first evaporator 9 by the freezing room blowing fan 20. At this time, as shown in FIG. 3, when the temperature of the first evaporator 9 detected by the first temperature detecting means 23 becomes higher than a preset target temperature of the first evaporator 9, When the temperature of the second evaporator 11 detected by the second temperature detecting means 24 becomes lower than the preset target temperature of the second evaporator 11, the compression is performed. The rotation speed of the compressor 6 is controlled by the compressor control means 25 so as to reduce the discharge amount of the refrigerant from the compressor 6.
【００２３】これにより、冷媒は第１の蒸発器９を通過
する間にほとんど全てが蒸発する。また、気液分離器１
９によって気体状の冷媒が優先的に第２の蒸発器１１に
送られ、この冷媒は、冷蔵室送風ファン２１により第２
の蒸発器１１を通過する冷蔵室４内の空気の熱を奪いな
がら冷蔵室４内の空気の温度とほぼ同じ温度まで速やか
に昇温する。これにより、第２の蒸発器１１の表面の温
度と冷蔵室４内の空気の温度との差が小さくなるため、
第２の蒸発器１１への着霜を防ぐことができる。さら
に、冷媒の顕熱分を冷蔵室４内の空気の冷却に有効利用
できるため、消費電力を低減することができる。Thus, almost all of the refrigerant evaporates while passing through the first evaporator 9. Gas-liquid separator 1
9, the gaseous refrigerant is sent preferentially to the second evaporator 11, and the refrigerant is sent to the second evaporator 11 by the refrigerating room blower fan 21.
The temperature of the air in the refrigerating compartment 4 is quickly raised to substantially the same temperature as the temperature of the air in the refrigerating compartment 4 while removing the heat of the air in the refrigerating compartment 4 passing through the evaporator 11. Thereby, the difference between the temperature of the surface of the second evaporator 11 and the temperature of the air in the refrigerator compartment 4 becomes smaller,
Frost formation on the second evaporator 11 can be prevented. Further, since the sensible heat of the refrigerant can be effectively used for cooling the air in the refrigerator compartment 4, the power consumption can be reduced.
【００２４】冷凍冷蔵庫１の除霜運転の場合には、図４
に示すように、第１の減圧手段８の第１の切換弁１５が
冷媒をバイパス管１４に通すように切り換えられ、第２
の減圧手段１０の第２の切換弁１８が冷媒を第２の減圧
器１７に通すように切り換えられる。また、凝縮器冷却
ファン２２は駆動されない。圧縮機６によって高温高圧
に圧縮された気体状の冷媒は、凝縮器冷却ファン２２が
駆動されていないため凝縮器７では完全に凝縮しないま
まバイパス管１４を通って第１の蒸発器９に流れ込む。In the case of the defrosting operation of the refrigerator 1, FIG.
As shown in (1), the first switching valve 15 of the first decompression means 8 is switched to pass the refrigerant through the bypass pipe 14, and
The second switching valve 18 of the pressure reducing means 10 is switched so that the refrigerant passes through the second pressure reducer 17. Further, the condenser cooling fan 22 is not driven. The gaseous refrigerant compressed to a high temperature and a high pressure by the compressor 6 flows into the first evaporator 9 through the bypass pipe 14 without being completely condensed in the condenser 7 because the condenser cooling fan 22 is not driven. .
【００２５】第１の蒸発器９では冷媒の蒸発・凝縮温度
が０℃以上になるため、冷媒は第１の蒸発器９に付着し
た霜に熱を与えながらさらに凝縮し、液相の比率が高く
なる。その後、冷媒は第２の減圧器１７によって減圧さ
れ、第２の蒸発器１１を通過する間に蒸発し、冷蔵室送
風ファン２１により第２の蒸発器１１を通過する空気の
熱を奪う。In the first evaporator 9, the evaporation / condensation temperature of the refrigerant becomes 0 ° C. or higher. Therefore, the refrigerant is further condensed while giving heat to the frost attached to the first evaporator 9, and the ratio of the liquid phase is reduced. Get higher. Thereafter, the refrigerant is depressurized by the second decompressor 17, evaporates while passing through the second evaporator 11, and takes heat of the air passing through the second evaporator 11 by the refrigerating room blower fan 21.
【００２６】このように、冷凍室３の除霜運転時におい
ては第１の蒸発器９表面の温度が上昇し、第１の蒸発器
９に付着した霜が第１の蒸発器９との接触部分から融解
して落下するため、短時間で除霜を行うことができる。
また、除霜中に冷蔵室４の冷却が継続され、冷蔵室４の
温度が上昇しないため、除霜終了後に冷蔵室４の温度を
降下させる必要がなく、消費電力を低減することができ
る。なお、冷凍室３の除霜中の冷蔵室４の冷却は冷凍室
３の除霜運転を行うことによって副次的に生じるもので
あるため、冷凍室３の除霜運転に要する電力のみで冷蔵
室４を冷却することができる。As described above, during the defrosting operation of the freezing compartment 3, the temperature of the surface of the first evaporator 9 rises, and the frost adhering to the first evaporator 9 comes into contact with the first evaporator 9. Since it melts from the part and falls, defrosting can be performed in a short time.
Further, since the cooling of the refrigerator compartment 4 is continued during the defrosting, and the temperature of the refrigerator compartment 4 does not rise, it is not necessary to lower the temperature of the refrigerator compartment 4 after the completion of the defrosting, and the power consumption can be reduced. Since the cooling of the refrigerator compartment 4 during the defrosting of the freezing compartment 3 is caused by performing the defrosting operation of the freezing compartment 3, the refrigerating compartment 4 is cooled only by the electric power required for the defrosting operation of the freezing compartment 3. The chamber 4 can be cooled.
【００２７】[0027]
【発明の効果】以上説明したように、請求項１の発明に
よれば、圧縮機から吐出される冷媒のほぼ全てが第１の
蒸発器で気化され、冷媒は第２の蒸発器に流れ込むと速
やかに温度が上昇するため、第２の蒸発器の温度と冷蔵
室内の空気の温度との差が少なくなり、第２の蒸発器へ
の着霜量が減少する。これにより、第２の蒸発器の除霜
回数を少なくすることができ、あるいは第２の蒸発器の
除霜を不要とすることができる。また、冷媒の顕熱分を
冷蔵室内の空気の冷却に有効利用できるため、消費電力
を低減することができる。As described above, according to the first aspect of the present invention, almost all of the refrigerant discharged from the compressor is vaporized in the first evaporator, and the refrigerant flows into the second evaporator. Since the temperature rises quickly, the difference between the temperature of the second evaporator and the temperature of the air in the refrigerator is reduced, and the amount of frost on the second evaporator is reduced. Thereby, the number of times of defrosting of the second evaporator can be reduced, or defrosting of the second evaporator can be made unnecessary. In addition, since the sensible heat of the refrigerant can be effectively used for cooling the air in the refrigerator, power consumption can be reduced.
【００２８】請求項２の発明によれば、気液分離器によ
り気体状の冷媒が優先的に第２の蒸発器に供給され、第
２の蒸発器の温度と冷蔵室内の温度差がより少なくなる
ため、第２の蒸発器への着霜量がより減少する。また、
冷媒の顕熱分の有効利用がより促進される。According to the second aspect of the present invention, the gaseous refrigerant is preferentially supplied to the second evaporator by the gas-liquid separator, and the difference between the temperature of the second evaporator and the temperature in the refrigerator compartment is reduced. Therefore, the amount of frost on the second evaporator is further reduced. Also,
Effective utilization of the sensible heat of the refrigerant is further promoted.
【００２９】請求項３の発明によれば、凝縮器と第１の
蒸発器の間に設けられた減圧手段を冷媒に減圧処理を行
わない状態にし、第１の蒸発器と第２の蒸発器の間の減
圧手段を冷媒に減圧処理を行う状態にすることにより、
第１の蒸発器における冷媒の蒸発・凝縮温度が氷点以上
になり、第１の蒸発器表面に付着した霜に熱を与えて溶
かすことができるため、除霜ヒータを使用せずに第１の
蒸発器の除霜を行うことができる。なお、この場合、霜
が第１の蒸発器との接触部分から融解して落下するた
め、短時間で除霜を行うことができる。また、第１の蒸
発器と第２の蒸発器の間の減圧手段で減圧された冷媒は
第２の蒸発器で蒸発し、第２の蒸発器を通過する冷蔵室
内の空気から熱を奪うため、除霜中にも冷蔵室の冷却が
継続され、除霜終了後に冷蔵室の温度を降下させる必要
がない。したがって、消費電力を低減することができる
ものである。According to the third aspect of the present invention, the decompression means provided between the condenser and the first evaporator is set to a state in which the refrigerant is not subjected to the decompression processing, and the first evaporator and the second evaporator are set. By putting the pressure reducing means in the state of performing the pressure reducing process on the refrigerant,
Since the evaporation / condensation temperature of the refrigerant in the first evaporator becomes equal to or higher than the freezing point and the frost attached to the surface of the first evaporator can be heated and melted, the first frost can be used without using the defrost heater. Defrosting of the evaporator can be performed. In this case, since the frost is melted and dropped from the contact portion with the first evaporator, the defrost can be performed in a short time. Further, the refrigerant decompressed by the decompression means between the first evaporator and the second evaporator evaporates in the second evaporator and takes heat from the air in the refrigerator compartment passing through the second evaporator. Also, the cooling of the refrigerator compartment is continued during the defrosting, and there is no need to lower the temperature of the refrigerator compartment after the completion of the defrosting. Therefore, power consumption can be reduced.
【図１】 本発明の一実施形態である冷凍冷蔵庫１の概
略構成を示す図。FIG. 1 is a diagram showing a schematic configuration of a refrigerator-freezer 1 according to an embodiment of the present invention.
【図２】 冷凍冷蔵庫１の通常運転時における冷媒の流
れを示す説明図。FIG. 2 is an explanatory diagram showing a flow of a refrigerant during a normal operation of the refrigerator-freezer 1;
【図３】 冷凍冷蔵庫１の通常運転時における圧縮機６
からの冷媒の吐出量の制御方法を示すフローチャート。FIG. 3 shows the compressor 6 during normal operation of the refrigerator 1
The flowchart which shows the control method of the discharge amount of the refrigerant | coolant from a machine.
【図４】 冷凍冷蔵庫１の冷凍室除霜運転時における冷
媒の流れを示す説明図。FIG. 4 is an explanatory diagram showing a flow of a refrigerant during a freezing compartment defrosting operation of the refrigerator 1;
【図５】 従来の冷凍冷蔵庫の概略構成を示す図。FIG. 5 is a diagram showing a schematic configuration of a conventional refrigerator-freezer.
１ 冷凍冷蔵庫 ２ 冷蔵庫本体 ３ 冷凍室 ４ 冷蔵室 ５ 冷却システム ６ 圧縮機 ７ 凝縮器 ８ 第１の減圧手段 ９ 第１の蒸発器 １０ 第２の減圧手段 １１ 第２の蒸発器 １９ 気液分離器 ２３ 第１の温度検出手段 ２４ 第２の温度検出手段 ２５ 圧縮機制御手段 DESCRIPTION OF SYMBOLS 1 Refrigerator-freezer 2 Refrigerator main body 3 Freezer room 4 Refrigerator room 5 Cooling system 6 Compressor 7 Condenser 8 1st decompression means 9 1st evaporator 10 2nd decompression means 11 2nd evaporator 19 Gas-liquid separator 23 first temperature detecting means 24 second temperature detecting means 25 compressor control means
Claims (3)
この冷蔵庫本体内部を冷却する冷却システムとを備え、
この冷却システムが、圧縮機と、凝縮器と、減圧手段
と、前記冷凍室内に設けられた第１の蒸発器と、前記冷
蔵室内に設けられた第２の蒸発器とを順次直列に接続し
て成るものである冷凍冷蔵庫において、 前記第１の蒸発器の温度を検出する第１の温度検出手段
と、前記第２の蒸発器の温度を検出する第２の温度検出
手段と、前記第１及び第２の温度検出手段によって検出
された温度に基づいて前記圧縮機を制御し、前記圧縮機
から吐出される冷媒の量を前記第１の蒸発器を通過する
間にほぼ全てが蒸発するように調節する圧縮機制御手段
とを設けたことを特徴とする冷凍冷蔵庫。A refrigerator body including a freezer compartment and a refrigerator compartment;
A cooling system for cooling the inside of the refrigerator body,
The cooling system sequentially connects a compressor, a condenser, a decompression unit, a first evaporator provided in the freezing chamber, and a second evaporator provided in the refrigerator compartment in series. A first temperature detecting means for detecting a temperature of the first evaporator; a second temperature detecting means for detecting a temperature of the second evaporator; And controlling the compressor based on the temperature detected by the second temperature detecting means so that almost all of the refrigerant discharged from the compressor evaporates while passing through the first evaporator. And a compressor control means for adjusting the temperature of the refrigerator.
間に気液分離器を設けたことを特徴とする請求項１に記
載の冷凍冷蔵庫。2. The refrigerator according to claim 1, wherein a gas-liquid separator is provided between the first evaporator and the second evaporator.
この冷蔵庫本体内部を冷却する冷却システムとを備え、
この冷却システムが、圧縮機と、凝縮器と、減圧手段
と、前記冷凍室内に設けられた第１の蒸発器と、前記冷
蔵室内に設けられた第２の蒸発器とを順次直列に接続し
て成るものである冷凍冷蔵庫において、 前記減圧手段が、冷媒に減圧処理を行う状態と冷媒に減
圧処理を行わずに通過させる状態とのいずれかを選択し
得るように構成され、前記第１の蒸発器と前記第２の蒸
発器の間に前記減圧手段と同様に構成された減圧手段を
設けたことを特徴とする冷凍冷蔵庫。3. A refrigerator body including a freezer compartment and a refrigerator compartment;
A cooling system for cooling the inside of the refrigerator body,
The cooling system sequentially connects a compressor, a condenser, a decompression unit, a first evaporator provided in the freezing chamber, and a second evaporator provided in the refrigerator compartment in series. In the refrigerator-freezer, the decompression means is configured to be able to select one of a state in which the refrigerant is subjected to a decompression process and a state in which the refrigerant is passed without performing the decompression process, A refrigerator having a decompression device between the evaporator and the second evaporator, the decompression device having the same configuration as the decompression device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064914A JP2000258020A (en) | 1999-03-11 | 1999-03-11 | Freezer/refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11064914A JP2000258020A (en) | 1999-03-11 | 1999-03-11 | Freezer/refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000258020A true JP2000258020A (en) | 2000-09-22 |
Family
ID=13271803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11064914A Pending JP2000258020A (en) | 1999-03-11 | 1999-03-11 | Freezer/refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000258020A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011247522A (en) * | 2010-05-28 | 2011-12-08 | Mitsubishi Electric Corp | Refrigerating cycle device, refrigerator using refrigerating cycle device, low temperature device and air conditioner |
| EP2592372A3 (en) * | 2011-11-08 | 2015-09-09 | Samsung Electronics Co., Ltd | Refrigerator using non-azeotropic refrigerant mixture and control method thereof |
| EP2868998A3 (en) * | 2013-11-04 | 2015-11-04 | LG Electronics Inc. | Refrigerator |
| CN113465134A (en) * | 2021-04-23 | 2021-10-01 | 青岛海尔空调器有限总公司 | Control method and device of air conditioner, storage medium and air conditioner |
-
1999
- 1999-03-11 JP JP11064914A patent/JP2000258020A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011247522A (en) * | 2010-05-28 | 2011-12-08 | Mitsubishi Electric Corp | Refrigerating cycle device, refrigerator using refrigerating cycle device, low temperature device and air conditioner |
| EP2592372A3 (en) * | 2011-11-08 | 2015-09-09 | Samsung Electronics Co., Ltd | Refrigerator using non-azeotropic refrigerant mixture and control method thereof |
| EP2868998A3 (en) * | 2013-11-04 | 2015-11-04 | LG Electronics Inc. | Refrigerator |
| US9733009B2 (en) | 2013-11-04 | 2017-08-15 | Lg Electronics Inc. | Refrigerator |
| CN113465134A (en) * | 2021-04-23 | 2021-10-01 | 青岛海尔空调器有限总公司 | Control method and device of air conditioner, storage medium and air conditioner |
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