JPH06147731A - Refrigerator - Google Patents
RefrigeratorInfo
- Publication number
- JPH06147731A JPH06147731A JP29414192A JP29414192A JPH06147731A JP H06147731 A JPH06147731 A JP H06147731A JP 29414192 A JP29414192 A JP 29414192A JP 29414192 A JP29414192 A JP 29414192A JP H06147731 A JPH06147731 A JP H06147731A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- room temperature
- refrigerator
- heat
- cooler
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2511—Evaporator distribution valves
Landscapes
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Defrosting Systems (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、蓄熱材を用いて庫内を
保冷する蓄熱式の冷蔵庫に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat storage type refrigerator for keeping the inside of a refrigerator cold by using a heat storage material.
【0002】[0002]
【従来の技術】近年、深夜電力の有効利用ないし電力需
要のピ−クカットによる平準化等の観点より蓄熱材を利
用して庫内の冷却を行う蓄熱式の冷蔵庫が特開昭63−
58068号公報に示されるごとく、考えられている。2. Description of the Related Art In recent years, a heat storage type refrigerator for cooling the inside of a refrigerator by using a heat storage material has been disclosed from the viewpoint of effective utilization of late-night power or leveling of power demand by peak cut.
As shown in Japanese Patent No. 58068, this is considered.
【0003】以下図面を参照しながら、上述した従来の
蓄熱式の冷蔵庫の一例について説明する。An example of the above conventional heat storage type refrigerator will be described below with reference to the drawings.
【0004】図6は、従来の蓄熱式の冷蔵庫の構造を示
す縦断面図であり、図7は冷凍システム図である。図6
と図7において、1は保冷庫本体で断熱材を内蔵したキ
ャビネット2と、ドア3と、ドア3とキャビネット2を
シ−ルするガスケット14とで構成されている。その内
部は、水平に配された中間仕切壁16により上部の冷凍
室17と下部の冷蔵室18との2室に仕切られている。FIG. 6 is a longitudinal sectional view showing the structure of a conventional heat storage type refrigerator, and FIG. 7 is a refrigeration system diagram. Figure 6
In FIG. 7, reference numeral 1 is a cool box body, which is composed of a cabinet 2 in which a heat insulating material is incorporated, a door 3, and a gasket 14 which seals the door 3 and the cabinet 2. The interior is divided into two chambers, an upper freezing chamber 17 and a lower refrigerating chamber 18, by a horizontally arranged intermediate partition wall 16.
【0005】4はコンプレッサでありコンデンサ5を介
して3方電磁弁6に接続される。さらに、この3方電磁
弁6の第1の流出口6aはキャピラリ7、冷却器8及び
アキュムレ−タ13を順次介して前記コンプレッサ4に
接続される。また、3方電磁弁6の第2の流出口6b
は、蓄熱器用キャピラリ9及び内部に蓄熱材15が充填
された蓄熱器10を順次介して前記アキュムレ−タ13
接続される。さらに、冷却器8と蓄熱器10との間には
閉ル−プ形サ−モサイホン12が、伝熱経路として設け
られ、この閉ル−プ形サ−モサイホン12の途中に蓄熱
器用電磁弁11が配される。なお、閉ル−プ形サ−モサ
イホン12には、たとえば重力式のものが用いられ、そ
の閉ル−プ状のパイプの中には、冷媒が封入されてい
る。A compressor 4 is connected to a three-way solenoid valve 6 via a capacitor 5. Further, the first outlet 6a of the three-way solenoid valve 6 is connected to the compressor 4 through a capillary 7, a cooler 8 and an accumulator 13 in this order. In addition, the second outlet 6b of the three-way solenoid valve 6
Is the accumulator 13 through the regenerator capillary 9 and the regenerator 10 having the regenerator material 15 filled therein.
Connected. Further, a closed loop type thermosiphon 12 is provided as a heat transfer path between the cooler 8 and the heat storage device 10, and a heat storage solenoid valve 11 is provided in the middle of the closed loop type thermosiphon 12. Are arranged. The closed loop type thermosiphon 12 is, for example, a gravity type, and a refrigerant is enclosed in the closed loop type pipe.
【0006】19は庫内を冷却するための冷却ファンで
あり、冷却器8の前方に設けられた冷凍室上部吹出口2
0及び冷凍室下部吹出口21から冷気を送出することが
できるようにしている。前記中間仕切壁16の冷凍室側
前方には冷凍室吸込口22が設けられ、ここから冷却器
8至る冷凍室中間ダクト23が水平に形成されている。Reference numeral 19 denotes a cooling fan for cooling the inside of the refrigerator, which is provided in front of the cooler 8 and has a freezer compartment upper outlet 2
0 and cold air can be sent out from the lower part 21 of the freezer compartment. A freezing compartment suction port 22 is provided in front of the intermediate partition wall 16 on the freezing compartment side, and a freezing compartment intermediate duct 23 extending from this to the cooler 8 is horizontally formed.
【0007】また、冷却器8の奥には、冷蔵庫背面部に
沿って冷却ファン19から冷蔵室吹出口24に至る冷蔵
室ダクト25が垂直に設けている。この冷蔵室吹出口2
4は、ダンパ−26により開閉可能としている。前記中
間仕切壁16の冷蔵室側前方には、冷蔵室吸込口27が
設けられ、ここから前記冷却器8に至る冷蔵室中間ダク
ト28が水平に形成されている。この冷蔵室中間ダクト
28の出口には、ガラス管ヒ−タ29が配され、その上
方に配されている冷却器8の除霜を可能としている。A refrigerating compartment duct 25 extending vertically from the cooling fan 19 to the refrigerating compartment outlet 24 is provided vertically along the back of the refrigerator at the back of the cooler 8. This refrigerating room outlet 2
4 can be opened and closed by a damper 26. A refrigerating compartment suction port 27 is provided in front of the intermediate partition wall 16 on the refrigerating compartment side, and a refrigerating compartment middle duct 28 extending from the refrigerating compartment suction port 27 to the cooler 8 is horizontally formed. A glass tube heater 29 is arranged at the outlet of the refrigerating compartment intermediate duct 28 to enable defrosting of the cooler 8 arranged above it.
【0008】以上の様に構成された冷蔵庫について図6
と図7を用いてその動作を説明する。FIG. 6 shows the refrigerator constructed as described above.
The operation will be described with reference to FIG.
【0009】通常冷却運転は、3方電磁弁6のコイルに
通電せず、第1の流出口6aが連通させ、コンプレッサ
4からコンデンサ5、3方電磁弁6及びキャピラリ7を
順次介して冷却器8に至り、この冷却器8からアキュム
レ−タ13を介して前記コンプレッサ4に至る冷媒流路
が構成し、冷却器8により庫内を冷却する。In the normal cooling operation, the coil of the three-way solenoid valve 6 is not energized, the first outlet 6a is communicated, and the condenser 4 is sequentially passed through the condenser 5, the three-way solenoid valve 6 and the capillary 7. 8, a refrigerant flow path from the cooler 8 to the compressor 4 via the accumulator 13 is formed, and the cooler 8 cools the inside of the refrigerator.
【0010】これに対して、蓄熱運転は、3方電磁弁6
のコイルに通電することで、第2の流出口6bが連通さ
せ、コンプレッサ4からコンデンサ5、3方電磁弁6及
びキャピラリ7を順次介して蓄熱器10に至り、この蓄
熱器10からアキュムレ−タ13を介して前記コンプレ
ッサ4に至る冷媒流路が構成し蓄熱器10内の蓄熱材1
5の冷却を行う。On the other hand, in the heat storage operation, the three-way solenoid valve 6
By energizing the coil of No. 2, the second outlet 6b is made to communicate with each other, and reaches the heat storage device 10 from the compressor 4 through the condenser 5, the three-way solenoid valve 6 and the capillary 7 in order, and from this heat storage device 10 to the accumulator. The heat storage material 1 in the heat storage device 10 is constituted by a refrigerant flow path reaching the compressor 4 via
Cool 5
【0011】また、蓄熱冷却運転は、蓄熱器用電磁弁1
1を開けることで閉ル−プ形サ−モサイホン12によ
り、蓄熱器10から冷却器8に放冷が行われ、この熱を
利用して庫内を冷却する。In the heat storage cooling operation, the heat storage solenoid valve 1 is used.
When 1 is opened, the closed loop type thermosiphon 12 allows the heat accumulator 10 to cool the cooler 8, and the heat is used to cool the inside of the refrigerator.
【0012】そして、各運転を図示していないタイマ作
用にて制御する。電力需要の少ない夜間(23時から翌
日の7時まで)にタイマ作用にて、蓄熱運転と通常冷却
運転を交互に行うことにより庫内温度は設定温度に保ち
ながら蓄熱材15を充分冷却しておき、昼間の電力需要
がピ−クの時間帯(13時から16時まで)の3時間に
おいては、大きな電力を必要とする通常冷却運転に代え
て定時間蓄熱冷却運転を行い庫内温度を保つ。Then, each operation is controlled by a timer action (not shown). At night when power demand is low (from 23:00 to 7:00 on the next day), the heat storage operation and the normal cooling operation are alternately performed by the timer action to sufficiently cool the heat storage material 15 while keeping the inside temperature at the set temperature. Every 3 hours during the peak daytime power demand (13:00 to 16:00), the constant temperature heat storage cooling operation is performed instead of the normal cooling operation that requires a large amount of power to control the temperature inside the warehouse. keep.
【0013】また冷却器8の除霜は、コンプレッサ4の
運転時間を積算し積算時間が任意時間になると、ガラス
管ヒ−タ29に通電し除霜を行う。除霜回数は、1日に
2回程度になるよう任意時間を設定している。In the defrosting of the cooler 8, the operating time of the compressor 4 is integrated, and when the integrated time reaches an arbitrary time, the glass tube heater 29 is energized for defrosting. The defrosting frequency is set to an arbitrary time such that it is about twice a day.
【0014】[0014]
【発明が解決しようとする課題】しかしながら上記の様
な構成では、冷却器の除霜開始時間はコンプレッサの運
転率できまり、使用状態がお客様のよって異なることか
ら蓄熱運転を行っている夜間に除霜開始してしまい、室
温が高い夏季等に充分な蓄熱運転時間が確保できず電力
の有効利用ができていないという課題を有していた。However, in the above-mentioned configuration, the defrosting start time of the cooler depends on the operation rate of the compressor, and the usage state varies depending on the customer. Since frost started, there was a problem that sufficient heat storage operation time could not be secured in summer when the room temperature was high, and electric power could not be effectively used.
【0015】本発明は上記課題を解決するもので、室温
に応じて除霜開始時間を決めるので室温の高い夏季等に
は夜間の蓄熱運転時間を充分確保でき、室温の低い季節
には電力需要の少ない夜間に除霜を開始できるので、年
間を通じて電力の有効利用ができる冷蔵庫を提供するも
のである。The present invention solves the above problems. Since the defrosting start time is determined according to the room temperature, the heat storage operation time at night can be sufficiently secured in the summer when the room temperature is high, and the electric power demand is required in the season when the room temperature is low. Since the defrosting can be started at night when there is little electricity, a refrigerator that can effectively use electric power throughout the year is provided.
【0016】[0016]
【課題を解決するための手段】上記課題を解決するため
に本発明の冷蔵庫は冷却器と内部に蓄熱材を有する蓄熱
器とを並列接続した冷凍サイクルと、任意の時間帯に前
記蓄熱器に熱を蓄熱する蓄熱運転と蓄熱した熱により冷
蔵庫内を冷却する蓄熱冷却運転の時間制御を行う時間制
御手段と、室内の温度を検知する室温検知手段と冷却器
を除霜するヒ−タとを備え、前記室温検知手段より検知
した室温が任意の設定温度以上の時は、夜間の所定の時
間帯と昼間の電力需要がピ−クの時間帯を除いた時間帯
に、室温が任意の設定温度以下の時は、夜間の所定の時
間帯に前記時間制御手段により前記冷却器の除霜を行う
ものである。In order to solve the above-mentioned problems, the refrigerator of the present invention has a refrigerating cycle in which a cooler and a heat storage device having a heat storage material are connected in parallel, and the refrigerator is provided with the heat storage device at any time zone. A time control means for performing time control of the heat storage operation of storing heat and the heat storage cooling operation of cooling the inside of the refrigerator by the stored heat, a room temperature detection means for detecting the temperature inside the room, and a heater for defrosting the cooler. When the room temperature detected by the room temperature detecting means is equal to or higher than an arbitrary set temperature, the room temperature is arbitrarily set during a predetermined time period at night and a time period except the peak power demand period during the daytime. When the temperature is lower than the temperature, the time control means defrosts the cooler in a predetermined time zone at night.
【0017】[0017]
【作用】本発明は上記した構成によって、除霜開始時間
は、室温に応じて行うので年間を通じて電力の有効利用
ができる。According to the present invention, since the defrosting start time is performed according to the room temperature, the electric power can be effectively used throughout the year.
【0018】[0018]
【実施例】以下本発明の一実施例の冷蔵庫について図面
を参照しながら説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A refrigerator according to an embodiment of the present invention will be described below with reference to the drawings.
【0019】図1は本発明の一実施例における冷蔵庫の
機能ブロック図であり、図2は本発明の一実施例におけ
る冷凍システム図であり、図3は本発明の一実施例にお
ける要部の電気回路図であり、図4は本発明の一実施例
におけるフロ−チャ−トであり、図5は本発明の一実施
例における室温に応じた一日の運転状態図である。FIG. 1 is a functional block diagram of a refrigerator in one embodiment of the present invention, FIG. 2 is a refrigeration system diagram in one embodiment of the present invention, and FIG. 3 is a main part of one embodiment of the present invention. FIG. 4 is an electric circuit diagram, FIG. 4 is a flow chart in one embodiment of the present invention, and FIG. 5 is a diagram showing a daily operation state according to room temperature in one embodiment of the present invention.
【0020】図1及び図3において、30は保冷庫本体
で断熱材を内蔵したキャビネット2と、ドア3と、ドア
3とキャビネット2をシ−ルするガスケット14とで構
成されている。その内部は、水平に配された断熱区画壁
33により上部の冷凍室17と下部の冷蔵室18との2
室に仕切られている。In FIGS. 1 and 3, reference numeral 30 is a cool box body, which is composed of a cabinet 2 containing a heat insulating material, a door 3, and a gasket 14 for sealing the door 3 and the cabinet 2. The inside is divided into a freezer compartment 17 at the upper part and a refrigerating compartment 18 at the lower part by a horizontally arranged heat insulating partition wall 33.
The room is partitioned.
【0021】62は冷凍室17内に設けた冷却室で、冷
却室62内には冷却器8と冷却ファン19と冷却器の除
霜を行うヒ−タ58を内装している。Reference numeral 62 is a cooling chamber provided in the freezing chamber 17, and the cooling chamber 62 is provided with a cooler 8, a cooling fan 19 and a heater 58 for defrosting the cooler.
【0022】断熱区画壁33内には、区画壁38をかえ
して冷蔵室吸込口35と冷却室62を連通する送風通路
A37と、冷蔵室吸込口35と冷却室62を連通する送
風通路B39を形成している。31は送風通路B39内
に内装した内部に蓄熱材32を充填している蓄熱器であ
り、56は蓄熱器31に取付られた蓄熱材温度センサ5
7により蓄熱材32温度を検知する蓄熱温度検知手段で
あり、36は冷凍室吸込口である。Inside the adiabatic partition wall 33, there are provided a ventilation passage A37 for connecting the refrigerating compartment suction port 35 and the cooling chamber 62 by replacing the partition wall 38, and a ventilation passage B39 for communicating the refrigerating compartment suction port 35 and the cooling chamber 62. Is forming. Reference numeral 31 is a regenerator that is filled in the air passage B39 with the regenerator 32, and 56 is a regenerator temperature sensor 5 attached to the regenerator 31.
7 is a heat storage temperature detecting means for detecting the temperature of the heat storage material 32, and 36 is a freezer inlet.
【0023】34は風路切替ダンパで、区画壁38に設
けている。風路切替ダンパ34は、風路切り替え手段6
1により送風通路B39を閉路する34aと、送風通路
A37を閉路する34bの2段階に切り替えるものであ
る。Reference numeral 34 denotes an air passage switching damper, which is provided on the partition wall 38. The air passage switching damper 34 is the air passage switching means 6
1 switches the air passage B39 to 34a and the air passage A37 to 34b.
【0024】26はダンパ−で、冷却ファン19により
冷蔵室ダクト25に送風された冷気の冷蔵室18への吐
出送風量を調整し、冷蔵室18を設定温度に制御するも
のである。Reference numeral 26 denotes a damper for adjusting the discharge air flow rate of the cool air blown to the refrigerating compartment duct 25 by the cooling fan 19 to the refrigerating compartment 18 and controlling the refrigerating compartment 18 to a set temperature.
【0025】63は除霜開始判定手段であり、室温検知
手段40の信号に応じて冷却器8の除霜開始時間を判定
する。Reference numeral 63 is a defrosting start determining means, which determines the defrosting start time of the cooler 8 according to the signal from the room temperature detecting means 40.
【0026】電気回路図のうち本発明の要旨に関係した
部分のみ示されており、46は時間制御手段としてのC
PUで、周知の如く図示しない記憶回路に記憶されたプ
ログラムにより動作するもので、現在の時刻を出力する
時計回路45と室温検知手段40及び庫内温度検出回路
44からの出力信号によってリレ−47、49、51、
53、59の通電制御を行う。即ち、各リレ−47、4
9、51、53に接続された各トランジスタ48、5
0、52、54、60のベ−スにハイレベルの信号を与
えることにより各リレ−47、49、51、53、59
に通電される。Of the electric circuit diagram, only the portion related to the gist of the present invention is shown, and 46 is C as a time control means.
As is well known, the PU is operated by a program stored in a storage circuit (not shown), and is released by the clock circuit 45 that outputs the current time, the room temperature detection means 40, and the output signal from the internal temperature detection circuit 44. , 49, 51,
Energization control of 53 and 59 is performed. That is, each relay 47, 4
Transistors 48, 5 connected to 9, 51, 53
By applying a high level signal to the bases of 0, 52, 54 and 60, the respective relays 47, 49, 51, 53 and 59 are provided.
Is energized.
【0027】リレ−47が通電されるとコンプレッサ4
が運転する。リレ−49が通電されると3方電磁弁6が
作動して第2の流出口6bが連通し、リレ−49が通電
されていない時は第1の流出口6aが連通する。リレ−
51が通電されると冷却ファン19が運転する。リレ−
53が通電されると風路切り替え手段34により送風通
路A37を閉路(34b)し、リレ−53が通電されて
いない時は、送風通路B39を閉路(34a)する。リ
レ−59が通電されるとヒ−タ58により冷却器8を除
霜する。When the relay 47 is energized, the compressor 4
Will drive. When the relay 49 is energized, the three-way solenoid valve 6 operates and the second outlet 6b communicates, and when the relay 49 is not energized, the first outlet 6a communicates. Relay
When 51 is energized, the cooling fan 19 operates. Relay
When 53 is energized, the air passage switching means 34 closes the air passage A37 (34b), and when the relay 53 is not energized, it closes the air passage B39 (34a). When the relay 59 is energized, the heater 58 defrosts the cooler 8.
【0028】また、庫内温度検出回路44は温度センサ
43により検出した値が設定温度以上の時に時間制御手
段46に信号を出力する。また、室温検知手段40は、
冷蔵庫の周囲室温を室温度センサ41からの信号をA/
D変換器42により出力電圧をデジタル化して時間制御
手段46に信号を出力する。また、蓄熱温度検知手段5
6は蓄熱材温度センサ57により検出した値が設定温度
以上の時に時間制御手段46に信号を出力する。The internal temperature detection circuit 44 outputs a signal to the time control means 46 when the value detected by the temperature sensor 43 is equal to or higher than the set temperature. Further, the room temperature detecting means 40 is
Around the room temperature of the refrigerator, the signal from the room temperature sensor 41 is A /
The D converter 42 digitizes the output voltage and outputs a signal to the time control means 46. Further, the heat storage temperature detecting means 5
6 outputs a signal to the time control means 46 when the value detected by the heat storage material temperature sensor 57 is equal to or higher than the set temperature.
【0029】図2において、4はコンプレッサでありコ
ンデンサ5を介して3方電磁弁6に接続される。さら
に、この3方電磁弁6の第1の流出口6aはキャピラリ
7、冷却器8及びアキュムレ−タ13を順次介して前記
コンプレッサ4に接続される。また、3方電磁弁6の第
2の流出口6bは、蓄熱器用キャピラリ9及び内部に蓄
熱材15が充填された蓄熱器31を順次介して前記アキ
ュムレ−タ13接続される。In FIG. 2, reference numeral 4 denotes a compressor, which is connected to a three-way solenoid valve 6 via a condenser 5. Further, the first outlet 6a of the three-way solenoid valve 6 is connected to the compressor 4 through a capillary 7, a cooler 8 and an accumulator 13 in this order. Further, the second outlet 6b of the three-way solenoid valve 6 is connected to the accumulator 13 through the regenerator capillary 9 and the regenerator 31 filled with the regenerator material 15 in order.
【0030】以上の様に構成された冷蔵庫について図1
と図2と図3と図4及び図5を用いてその動作を説明す
る。FIG. 1 shows the refrigerator configured as described above.
The operation will be described with reference to FIGS. 2, 3, 4, and 5.
【0031】通常冷却運転は、冷却器8を用いて庫内を
冷却し設定温度に保冷するものである。即ち、CPU4
6によりリレ−51及び53をOFFとすることで冷媒
流路は、冷却器8を連通する側(ステップS1)、冷気
風路は風路切り替え手段34が34a側(ステップS
2)となり送風通路Aが連通の状態を保持し、庫内温度
が設定値以上の時は庫内温度検出回路44からの信号に
よりCPU46は、リレ−47及び49をONとしコン
プレッサ4及び冷却ファン19を運転する(ステップS
3)ことで冷却器8により庫内を設定温度以下に冷却す
る。そして、庫内温度が設定値以下になると庫内温度検
出回路44の信号がOFFとなりCPU46は、リレ−
47及び49をOFFとし、冷媒と冷気の循環を停止す
る(ステップS4)。以上の動作を繰り返すことにより
庫内を設定温度に保冷する。In the normal cooling operation, the inside of the refrigerator is cooled by using the cooler 8 and kept at the set temperature. That is, CPU4
By turning off the relays 51 and 53 by 6, the refrigerant flow path is the side communicating with the cooler 8 (step S1), and the cold air flow path is the air path switching means 34a side 34a (step S1).
2) and the ventilation passage A is maintained in the communicating state, and when the temperature inside the refrigerator is equal to or higher than the set value, the CPU 46 turns on the relays 47 and 49 by the signal from the temperature detecting circuit 44 inside the refrigerator, and the compressor 4 and the cooling fan. Drive 19 (Step S
As a result of 3), the inside of the refrigerator is cooled by the cooler 8 to the set temperature or lower. Then, when the temperature inside the refrigerator becomes equal to or lower than the set value, the signal from the temperature detecting circuit 44 inside the refrigerator turns off, and the CPU 46 releases the relay.
47 and 49 are turned off, and the circulation of the refrigerant and the cool air is stopped (step S4). By repeating the above operation, the inside of the refrigerator is kept cool at the set temperature.
【0032】蓄熱運転は、夜間の電力需要が低い所定の
時間帯(23時から翌日の7時まで)において(ステッ
プS5)、蓄熱器31内に充填されている蓄熱材32に
夜間の所定の時間帯の電力を熱に代えて蓄熱するもので
ある。即ち、庫内温度が設定値以上の時は庫内温度検出
回路44からの信号によりCPU46は、リレ−47及
び49をONとしコンプレッサ4及び冷却ファン19を
運転する通常運転を行い(ステップS6)、庫内温度が
設定値以下になると庫内温度検出回路44の信号にから
CPU46によりリレ−51及び47をONとすること
で冷媒流路を、蓄熱器31が連通する側に保持し、コン
プレッサ4を運転することで冷媒を蓄熱器31内で蒸発
させ、蓄熱材32を凍結させる(ステップS7)。The heat storage operation is performed in a predetermined time zone (from 23:00 to 7:00 of the next day) in which the power demand at night is low (step S5), in which the heat storage material 32 filled in the heat storage unit 31 is operated at a predetermined night time. The electric power in the time zone is replaced with heat to store heat. That is, when the temperature inside the refrigerator is equal to or higher than the set value, the CPU 46 performs a normal operation of turning on the relays 47 and 49 and operating the compressor 4 and the cooling fan 19 in response to a signal from the temperature detecting circuit 44 (step S6). When the temperature inside the refrigerator becomes equal to or lower than the set value, the CPU 46 turns on the relays 51 and 47 in response to the signal from the temperature detecting circuit 44 to hold the refrigerant flow path on the side where the heat storage device 31 communicates with the compressor. By operating No. 4, the refrigerant is evaporated in the heat storage unit 31 and the heat storage material 32 is frozen (step S7).
【0033】また、蓄熱材32の重量としては、春季、
秋季等の低室温(15℃)時における冷蔵温度帯の室を
基準とした重量としておく。即ち、低室温時において昼
間の電力需要が多い所定の時間帯(7時から23時ま
で)の冷蔵室の合計した負荷熱量と同等の熱量を全て蓄
熱できる重量とすることである。The weight of the heat storage material 32 is as follows:
The weight is based on the room in the refrigerating temperature zone at low room temperature (15 ° C) such as autumn. That is, the weight is such that all heat amounts equivalent to the total load heat amount of the refrigerating room in a predetermined time zone (from 7 o'clock to 23 o'clock) in which daytime power demand is high at low room temperature can be stored.
【0034】蓄熱冷却運転は、昼間の電力需要がピ−ク
の時間帯に蓄熱器31が蓄熱した熱を利用して冷凍室以
外の室の戻り空気冷却するものである。即ち、冷凍室内
温度が設定値以上の時は庫内温度検出回路44からの信
号によりCPU46は、リレ−47、49をONとしコ
ンプレッサ4、冷却ファン19を運転することで冷凍室
を設定温度以下に冷却する。The heat storage cooling operation is to cool the return air of a room other than the freezing room by utilizing the heat stored in the heat storage unit 31 during the peak daytime power demand. That is, when the temperature in the freezer compartment is equal to or higher than the set value, the CPU 46 responds to a signal from the in-compartment temperature detection circuit 44 to turn on the relays 47 and 49 to operate the compressor 4 and the cooling fan 19 so that the freezer compartment is kept below the set temperature. Cool to.
【0035】また、冷蔵室18の温度調節はダンパ−2
6により冷蔵室18への吐出送風量を調整することで設
定温度に制御し、戻り空気はCPU46によりリレ−5
3をONとすることで、冷気風路は風路切り替え手段3
4が34b側となり送風通路B39が連通の状態を保持
し冷却する(ステップS8)。これにより冷却器8で冷
却する熱量は、冷凍室の負荷熱量だけとなる。The temperature of the refrigerating room 18 is controlled by the damper-2.
6, the amount of air blown to the refrigerating chamber 18 is adjusted to control the set temperature, and the return air is released by the CPU 46.
When 3 is turned on, the cold air passage is the air passage switching means 3
4 is on the 34b side, and the ventilation passage B39 is maintained in a communicating state and cooled (step S8). As a result, the amount of heat cooled by the cooler 8 is only the amount of heat applied to the freezer.
【0036】そして、庫内温度が設定値以下になると庫
内温度検出回路44の信号がOFFとなりCPU46
は、リレ−47、49をOFFとし、コンプレッサ及び
冷気の循環を停止する。以上の動作を繰り返すことによ
り各庫内を設定温度に保冷する。When the temperature inside the refrigerator falls below the set value, the signal from the temperature detecting circuit 44 inside the chamber turns off and the CPU 46
Turns off the relays 47 and 49 to stop the circulation of the compressor and the cool air. By repeating the above operation, the inside of each refrigerator is kept cold at the set temperature.
【0037】次に、冷却器8の除霜開始時刻の制御方法
について図4及び図5を用いて説明する。Next, a method of controlling the defrosting start time of the cooler 8 will be described with reference to FIGS. 4 and 5.
【0038】蓄熱運転の時間は室温により変化する。そ
れは、キャビネット2から侵入する熱量やシステムの冷
凍能力が室温によって変化するためであり蓄熱運転時間
が長い室温の高い夏季等は、任意に設定温度以上である
ことを室温検知手段40から信号を受けた除霜開始判定
手段63が蓄熱運転時間を充分確保するべく昼間におい
て電力需要がピ−クの時間帯を除く時間に冷却器8の除
霜を開始させる。The heat storage operation time varies depending on the room temperature. This is because the amount of heat entering from the cabinet 2 and the refrigerating capacity of the system change depending on the room temperature, and during the summer when the room temperature is long and the heat storage operation time is long, the room temperature detecting means 40 receives a signal from the room temperature detecting means 40. The defrosting start determination means 63 starts defrosting of the cooler 8 at times other than the peak time of the power demand in the daytime in order to secure a sufficient heat storage operation time.
【0039】また、蓄熱運転時間が短い室温が低い季節
は、除霜開始判定手段63が電力需要の少ない夜間の所
定の時間帯に冷却器8の除霜を開始させる。Further, in a season when the room temperature is low and the heat storage operation time is short, the defrosting start judging means 63 starts defrosting the cooler 8 at a predetermined time zone at night when the power demand is low.
【0040】例えば図5に示す如く、室温が設定温度以
上の時は7時と21時に、室温が設定温度以下の時は2
3時に除霜を開始させる。For example, as shown in FIG. 5, 7:00 and 21:00 when the room temperature is higher than the set temperature, and 2 when the room temperature is lower than the set temperature.
Start defrosting at 3 o'clock.
【0041】次に、各運転の制御方法を図4及び図6を
用いて説明する。時間制御手段46により夜間電力需要
が低い所定の時間帯(23時から翌日の7時まで)23
時から通常冷却運転と蓄熱運転の交互運転をする。即
ち、庫内温度が設定値以上の時は通常冷却運転で庫内を
冷却し、庫内温度が設定値以下の時は蓄熱運転により電
力を熱に代えて蓄熱する(ステップS5)制御を行い、
蓄熱温度検知手段56により蓄熱材32の凍結終了を検
知し蓄熱運転を終了する(ステップS10)。Next, the control method for each operation will be described with reference to FIGS. 4 and 6. A predetermined time period (from 23:00 to 7:00 of the next day) at which the nighttime power demand is low by the time control means 46.
Alternate operation of normal cooling operation and heat storage operation from time to time. That is, when the temperature inside the refrigerator is equal to or higher than the set value, the inside of the refrigerator is cooled by the normal cooling operation, and when the temperature inside the refrigerator is equal to or lower than the set value, the heat is stored instead of heat in the heat storage operation (step S5). ,
The end of freezing of the heat storage material 32 is detected by the heat storage temperature detection means 56 and the heat storage operation is ended (step S10).
【0042】また、昼間の負荷量に対しては、室温検知
手段40により検知した前日の昼間の平均室温より時間
制御手段46が推測する。For the daytime load, the time control means 46 estimates from the daytime average room temperature detected by the room temperature detection means 40.
【0043】この推測値より、時間制御手段46が少な
くとも昼間の電力需要がピ−クの時間帯(13時から1
6時)を含むように蓄熱冷却運転を開始する(ステップ
S11)。そして、蓄熱温度検知手段56が蓄熱材32
が設定温度以上になり蓄熱器31の冷却能力がなくなっ
たことの信号を時間制御手段46に送出することで蓄熱
冷却運転が終了する。From this estimated value, the time control means 46 determines that at least the daytime power demand is in a peak time zone (13:00 to 1
The heat storage cooling operation is started so as to include 6:00 (step S11). Then, the heat storage temperature detecting means 56 causes the heat storage material 32 to
Is higher than the set temperature and the signal indicating that the cooling capacity of the heat storage device 31 is lost is sent to the time control means 46, whereby the heat storage cooling operation is completed.
【0044】例えば図6に示す如く、蓄熱冷却運転の時
間は室温30℃の場合は7時間であり、室温15℃の場
合は16時間となる。For example, as shown in FIG. 6, the heat storage cooling operation time is 7 hours when the room temperature is 30 ° C. and 16 hours when the room temperature is 15 ° C.
【0045】以上のように本実施例によれば、冷却器と
内部に蓄熱材を有する蓄熱器とを並列接続した冷凍サイ
クルと、任意の時間帯に前記蓄熱器に熱を蓄熱する蓄熱
運転と蓄熱した熱により冷蔵庫内を冷却する蓄熱冷却運
転の時間制御を行う時間制御手段と、室内の温度を検知
する室温検知手段と冷却器を除霜するヒ−タとを備え、
前記室温検知手段より検知した室温が任意の設定温度以
上の時は、夜間の所定の時間帯と昼間の電力需要がピ−
クの時間帯を除いた時間帯に、室温が任意の設定温度以
下の時は、夜間の所定の時間帯に前記時間制御手段によ
り前記冷却器の除霜を行うので、室温に応じて除霜開始
時間を決めるので室温の高い夏季等には夜間の蓄熱運転
時間を充分確保でき、室温の低い季節には電力需要の少
ない夜間に除霜を開始できるので、年間を通じて電力の
有効利用ができる。As described above, according to this embodiment, a refrigerating cycle in which a cooler and a heat storage device having a heat storage material are connected in parallel, and a heat storage operation for storing heat in the heat storage device at an arbitrary time zone A time control means for performing time control of the heat storage cooling operation for cooling the inside of the refrigerator by the stored heat, a room temperature detection means for detecting the temperature inside the room, and a heater for defrosting the cooler,
When the room temperature detected by the room temperature detecting means is equal to or higher than an arbitrary set temperature, the demand for electricity during the predetermined time zone at night and the daytime is peaked.
When the room temperature is less than or equal to an arbitrary set temperature during the time period excluding the time period, the defrosting of the cooler is performed by the time control means during a predetermined time period at night. Since the start time is determined, a sufficient heat storage operation time at night can be secured in the summer when the room temperature is high, and in the season when the room temperature is low, defrosting can be started at night when the power demand is low, so that the electric power can be effectively used throughout the year.
【0046】さらに、融解潜熱量が大きい蓄熱材が使用
でき冷蔵庫の有効内容積の減少が極力抑えられ、また消
費電力量の増大がない。Further, a heat storage material having a large latent heat of fusion can be used, the reduction of the effective internal volume of the refrigerator is suppressed as much as possible, and the power consumption is not increased.
【0047】[0047]
【発明の効果】以上のように本発明は、冷却器と内部に
蓄熱材を有する蓄熱器とを並列接続した冷凍サイクル
と、任意の時間帯に前記蓄熱器に熱を蓄熱する蓄熱運転
と蓄熱した熱により冷蔵庫内を冷却する蓄熱冷却運転の
時間制御を行う時間制御手段と、室内の温度を検知する
室温検知手段と冷却器を除霜するヒ−タとを備え、前記
室温検知手段より検知した室温が任意の設定温度以上の
時は、夜間の所定の時間帯と昼間の電力需要がピ−クの
時間帯を除いた時間帯に、室温が任意の設定温度以下の
時は、夜間の所定の時間帯に前記時間制御手段により前
記冷却器の除霜を行うので、室温に応じて除霜開始時間
を決めるので室温の高い夏季等には夜間の蓄熱運転時間
を充分確保でき、室温の低い季節には電力需要の少ない
夜間に除霜を開始できるので、年間を通じて電力の有効
利用ができる冷蔵庫となる。As described above, the present invention has a refrigeration cycle in which a cooler and a heat storage device having a heat storage material are connected in parallel, a heat storage operation for storing heat in the heat storage device at any time and a heat storage operation. The time control means for performing time control of the heat storage cooling operation for cooling the inside of the refrigerator by the heat generated, the room temperature detecting means for detecting the room temperature and the heater for defrosting the cooler are provided, and the room temperature detecting means detects the temperature. When the room temperature is above the set temperature, the specified time of the night and during the daytime power demand excluding the peak hours, and when the room temperature is below the set temperature, the night Since the defrosting of the cooler is performed by the time control means in a predetermined time zone, the defrosting start time is determined according to the room temperature, so that the heat storage operation time at night can be sufficiently secured in the summer when the room temperature is high, Defrost can be started at night when electricity demand is low in low season. Runode, a refrigerator that can be effective use of power throughout the year.
【図1】本発明の一実施例における冷蔵庫の機能ブロッ
ク図FIG. 1 is a functional block diagram of a refrigerator according to an embodiment of the present invention.
【図2】図1の冷蔵庫の冷凍システム図FIG. 2 is a refrigeration system diagram of the refrigerator shown in FIG.
【図3】図1の冷蔵庫の要部の電気回路図FIG. 3 is an electric circuit diagram of a main part of the refrigerator shown in FIG.
【図4】図1の冷蔵庫のフロ−チャ−ト図4 is a flowchart of the refrigerator shown in FIG.
【図5】図1の室温に応じた一日の運転状態図[Fig. 5] Fig. 5 is a diagram showing the operating state of one day according to the room temperature in Fig. 1.
【図6】従来の冷蔵庫の構造を示す縦断面図FIG. 6 is a vertical sectional view showing the structure of a conventional refrigerator.
【図7】図6の冷蔵庫の冷凍システム図FIG. 7 is a refrigeration system diagram of the refrigerator shown in FIG.
8 冷却器 31 蓄熱器 32 蓄熱材 40 室温検知手段 46 時間制御手段 58 ヒ−タ 8 Cooler 31 Heat storage device 32 Heat storage material 40 Room temperature detection means 46 Time control means 58 Heater
Claims (1)
を並列接続した冷凍サイクルと、任意の時間帯に前記蓄
熱器に熱を蓄熱する蓄熱運転と蓄熱した熱により冷蔵庫
内を冷却する蓄熱冷却運転の時間制御を行う時間制御手
段と、室内の温度を検知する室温検知手段と冷却器を除
霜するヒ−タとを備え、前記室温検知手段より検知した
室温が任意の設定温度以上の時は、夜間の所定の時間帯
と昼間の電力需要がピ−クの時間帯を除いた時間帯に、
室温が任意の設定温度以下の時は、夜間の所定の時間帯
に前記時間制御手段により前記冷却器の除霜を行うこと
を特徴とする冷蔵庫。1. A refrigeration cycle in which a cooler and a heat storage device having a heat storage material inside are connected in parallel, a heat storage operation of storing heat in the heat storage device at an arbitrary time zone, and a refrigerator is cooled by the stored heat. A time control means for performing time control of the heat storage cooling operation, a room temperature detection means for detecting the room temperature, and a heater for defrosting the cooler are provided, and the room temperature detected by the room temperature detection means is equal to or higher than an arbitrary set temperature. In the case of, during the predetermined time zone at night and the daytime power demand except the peak time zone,
A refrigerator characterized in that, when the room temperature is equal to or lower than an arbitrary set temperature, the time control means defrosts the cooler in a predetermined time zone at night.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29414192A JP3265004B2 (en) | 1992-11-02 | 1992-11-02 | refrigerator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29414192A JP3265004B2 (en) | 1992-11-02 | 1992-11-02 | refrigerator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06147731A true JPH06147731A (en) | 1994-05-27 |
JP3265004B2 JP3265004B2 (en) | 2002-03-11 |
Family
ID=17803844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29414192A Expired - Fee Related JP3265004B2 (en) | 1992-11-02 | 1992-11-02 | refrigerator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3265004B2 (en) |
-
1992
- 1992-11-02 JP JP29414192A patent/JP3265004B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3265004B2 (en) | 2002-03-11 |
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