JP3744575B2 - Refrigerator temperature control device - Google Patents

Refrigerator temperature control device Download PDF

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Publication number
JP3744575B2
JP3744575B2 JP31208095A JP31208095A JP3744575B2 JP 3744575 B2 JP3744575 B2 JP 3744575B2 JP 31208095 A JP31208095 A JP 31208095A JP 31208095 A JP31208095 A JP 31208095A JP 3744575 B2 JP3744575 B2 JP 3744575B2
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Japan
Prior art keywords
temperature
control device
temperature sensor
outside air
refrigerator
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JP31208095A
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Japanese (ja)
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JPH09152247A (en
Inventor
恭也 館野
昌志 豊嶋
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/122—Sensors measuring the inside temperature of freezer compartments
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer

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  • Devices That Are Associated With Refrigeration Equipment (AREA)

Description

【０００１】
【発明の属する技術分野】
この発明は冷蔵庫の温度制御装置に関する。
【０００２】
【従来の技術】
従来のこの種冷蔵庫は例えば実公平４−７５０５号公報に記載されているように、冷蔵室内に冷気を流入させる吹き出し口を開閉するダンパーと、このダンパーを開閉させるベローズに連通する感熱部を庫外に設け、この感熱部に設けたヒータを冷蔵室内の温度センサーからの信号でヒータ制御回路を制御し、前記感熱部による冷蔵室の温度のバラツキやディファレンシャルを小さく抑えるようにしている。
【０００３】
【発明が解決しようとする課題】
しかしながら、従来の冷蔵庫では冷蔵室の温度を検出する温度センサーとダンパーを作動させる感熱部との温度検出部を２個設けなければならず、しかも、外気温度については何等考慮されておらず、外気温度が低温の時に圧縮機の運転時間が短くなって冷蔵室の温度が高めになる等の問題があった。
【０００４】
この発明は上記の問題を解決するもので、冷凍室の温度を検出する温度センサーのディファレンシャルを外気温度に応じて変え、圧縮機の運転時間を変えて機械式ダンパーによる冷蔵室内の温度を適正にした冷蔵庫の温度制御装置を提供することを目的とする。
【０００５】
【課題を解決するための手段】
請求項１の発明では、前面に開口を有するとともに、内部が上下に冷蔵室及び冷凍室に区画された本体と、前記冷凍室の背部に収納された冷却器及び送風機と、この冷却器の冷却用の圧縮機と、開口を塞ぐバッフル板と冷蔵室の温度を検出する感熱部とで構成され前記冷却器を通った冷気の一部を前記冷蔵室に供給する機械式のダンパーと、外気温度を検出する外気温度センサーとを設けた冷蔵庫の温度制御装置において、前記温度センサーの設定値によって前記圧縮機及び前記送風機の運転をオン・オフ制御し、前記外気温度が低温時には前記温度センサーのディファレンシャルの幅を拡大する制御装置を備え、外気温度に関係なく冷蔵室の温度を設定温度にしている。
【０００６】
【発明の実施の形態】
以下この発明を図に基づいて説明する。
【０００７】
図１はこの発明の一実施例を示す冷蔵庫の断面図である。図２はこの発明の冷凍室を示す断面図である。図３はこの発明の自動製氷機の斜視図である。図４はこの発明の制御回路図である。
【０００８】
１は冷蔵庫で、この冷蔵庫は前方に開口する鋼板製の外箱２と、この外箱内に間隔を存して組み込まれる前方に開口する硬質合成樹脂製の内箱３と、両箱２，３間に現場発泡方式にて充填された発泡ポリウレタン断熱材４とから本体５が構成されている。内箱３は仕切壁６にて上下に区画され、上側に冷蔵室７が、下側に２段に冷凍室８が形成されている。そして、冷蔵室７の前面開口は扉９で、冷凍室８の前面開口は引き出し扉１０にて開閉自在に閉塞されている。
【０００９】
引き出し扉１０には裏面に一端を固定したコ字状の枠体１１が固定されている。
この枠体は本体５に設けられたローラ付固定レール１２に前後方向に摺動自在に嵌合され、左右に２つに仕切られた下容器１３を内部で保持している。この下容器の上方には上容器１４と自動製氷機１５とが配置されている。
【００１０】
冷凍室８の背部には区画壁１６によって区画されて冷却器１７と、この冷却器の上方に配置された送風機１８とを収納する冷却器室１９が設けられている。区画壁１６には送風機１８の前方に冷凍室８内に冷却器１７で冷却された冷気を吹き出すスリット１８Ａが設けられている。
【００１１】
２０は冷却器１７で冷却された冷気の一部を冷蔵室７に供給する機械式のダンパーサーモで、このダンパーサーモは開口を塞ぐバッフル板２１と、冷蔵室７の温度を検出する感熱部２２とで構成されている。
【００１２】
自動製氷機１５は下方に開口を有する取付フレーム２３と、このフレーム内に収納される製氷皿２４と、この製氷皿を回動する駆動装置２５とで構成されている。製氷皿２４の下方に配置される下容器１３の一方には氷受け皿２６が形成されている。
【００１３】
取付フレーム２３の後方には送風機１８から吹き出される冷気をこの取付フレーム内に供給する吹き出し口２７が設けられている。この吹き出し口は仕切板２８によって２つに分けられている。
【００１４】
２９は製氷皿２４と区画された仕切板２８の外側に設置される温度センサーで、この温度センサーは吹き出し口２７から吹き出される冷気の温度を直接検出し、冷凍室８内の温度を検出している。
【００１５】
３０は本体５の外部に設けた外気温度センサーである。
【００１６】
３１は冷却器１７を冷却する圧縮機で、この圧縮機は本体５の下部の機械室３２内に収納されている。
【００１７】
図４は制御回路を示し、３３は冷凍室８内に設けた温度センサー２９と外気温度センサー３０とによって圧縮機３１及び送風機１８の運転を制御するとともに、外気温度に応じて温度センサー２９のディファレンシャルを変える制御装置で、この制御装置は温度センサー２９、外気温度センサー３０及び抵抗３４をブリッジ接続した回路に接続されるとともに、圧縮機３１及び送風機１８を駆動する出力回路３５に接続されている。そして、制御装置３３は温度センサー２９の設定値によって圧縮機３１及び送風機１８の運転をオン・オフ制御している。温度センサー２９は外気温度センサー３０で検出した外気温度によってディファレンシャルが変化するようにしている。すなわち、制御装置３３は外気温度が２５℃以下の場合にはディファレンシャルを拡大し、２５℃以上の場合にはディファレンシャルを狭くするように温度センサー２９のディファレンシャルを変えるようにしている。
【００１８】
このように構成された冷蔵庫の温度制御装置において、圧縮機３１及び送風機１８は制御装置３３によって冷蔵室７と冷凍室８とを設定温度になるように運転される。冷凍室８は冷却器１７で冷却されて送風機１８によってスリット１８Ａから吹き出される冷気によって冷却され、冷蔵室７は冷却器１７で冷却された冷気の一部を機械式ダンパーサーモ２０によって調整して冷却するようにしている。
【００１９】
制御装置３３は冷凍室８の温度を検出する温度センサー２９により、圧縮機３１及び送風機１８をオン・オフ制御している。また、制御装置３３は外気温度センサー３０で検出された外気温度によって温度センサー２９のディファレンシャルを２５℃以下では例えば６ｄｅｇに拡大し、２５℃以上では４ｄｅｇに狭くして圧縮機３１の運転率を変えるようにしている。すなわち、制御装置３３は低温時には温度センサー２９のディファレンシャルを拡大して圧縮機３１の運転時間が長くなるようにして冷蔵室７内の温度を機械式のダンパーサーモ２０を使用しても設定温度に維持できるようにしている。
【００２０】
この発明は外気温度を検出する外気温度センサー３０によって冷凍室８の温度を検出する温度センサー２９のディファレンシャルを変えることにより、温度反応の遅い機械式のダンパーサーモ２０を用いても冷蔵室７内の温度を設定温度に維持させることができるようにしたものである。
【００２１】
【発明の効果】
請求項１の発明によれば、前面に開口を有するとともに、内部が上下に冷蔵室及び冷凍室に区画された本体と、前記冷凍室の背部に収納された冷却器及び送風機と、この冷却器の冷却用の圧縮機と、前記冷却器を通った冷気の一部を冷蔵室に供給する機械式のダンパーと、前記冷凍室の温度を検出する温度センサーと、外気温度を検出する外気温度センサーとを設けた冷蔵庫の温度制御装置において、外気温度に応じて前記温度センサーのディファレンシャルの幅を変える制御装置を備えたので、外気温度によって前記圧縮機の運転時間を変化でき、冷蔵室の温度を制御するダンパーを機械式のダンパーにしても外気温度の低いときに前記冷蔵室の温度が設定値よりも高めになるのを防止できる。
【図面の簡単な説明】
【図１】 この発明の一実施例を示す冷蔵庫の断面図である。
【図２】 この発明の冷凍室を示す断面図である。
【図３】 この発明の自動製氷機の斜視図である。
【図４】 この発明の制御回路図である。
【符号の説明】
１ 冷蔵庫
５ 本体
７ 冷蔵室
８ 冷凍室
１７ 冷却器
１８ 送風機
２０ 機械式のダンパー
２９ 温度センサー
３０ 外気温度センサー
３１ 圧縮機[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temperature control device for a refrigerator.
[0002]
[Prior art]
For example, as described in Japanese Utility Model Publication No. 4-7505, a conventional refrigerator of this type includes a damper that opens and closes a blow-out opening that allows cold air to flow into a refrigeration room, and a heat-sensitive portion that communicates with a bellows that opens and closes the damper. A heater provided in the heat sensitive part is controlled by a heater control circuit with a signal from a temperature sensor in the refrigerating room, so that the temperature variation and the differential in the refrigerating room due to the heat sensitive part are kept small.
[0003]
[Problems to be solved by the invention]
However, in the conventional refrigerator, it is necessary to provide two temperature detection units, that is, a temperature sensor that detects the temperature of the refrigerator compartment and a heat-sensitive unit that operates the damper, and the outside air temperature is not taken into consideration at all. When the temperature is low, the compressor operation time is shortened and the temperature of the refrigerator compartment is increased.
[0004]
The present invention solves the above-mentioned problem. The differential of the temperature sensor for detecting the temperature of the freezer compartment is changed according to the outside air temperature, the operating time of the compressor is changed, and the temperature in the refrigerator compartment by the mechanical damper is appropriately adjusted. An object of the present invention is to provide a temperature control device for a refrigerator.
[0005]
[Means for Solving the Problems]
In invention of Claim 1, while having an opening in the front surface, the inside is divided into a refrigerator compartment and a freezer compartment up and down, a cooler and a blower housed in the back of the freezer compartment, and cooling of this cooler a compressor for use, a mechanical damper supplied to the refrigerating chamber part of the cool air through the cooler is composed of a heat sensitive portion for detecting the temperature of the baffle plate and refrigerating chamber for closing the opening, the outside air temperature A temperature control device for a refrigerator provided with an outside air temperature sensor that detects on-off control of the operation of the compressor and the blower according to a set value of the temperature sensor, and the differential of the temperature sensor when the outside air temperature is low A control device for expanding the width of the refrigerator compartment is provided, and the temperature of the refrigerator compartment is set to a set temperature regardless of the outside air temperature.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings.
[0007]
FIG. 1 is a sectional view of a refrigerator showing an embodiment of the present invention. FIG. 2 is a cross-sectional view showing the freezer compartment of the present invention. FIG. 3 is a perspective view of the automatic ice making machine of the present invention. FIG. 4 is a control circuit diagram of the present invention.
[0008]
Reference numeral 1 denotes a refrigerator. This refrigerator has a steel plate outer box 2 that opens forward, a hard synthetic resin inner box 3 that opens in the outer box and is installed in a space, and both boxes 2, A main body 5 is composed of a polyurethane foam heat insulating material 4 filled between the three by an in-situ foaming method. The inner box 3 is partitioned vertically by a partition wall 6, a refrigerator compartment 7 is formed on the upper side, and a freezer compartment 8 is formed on the lower side in two stages. The front opening of the refrigerator compartment 7 is closed by a door 9 and the front opening of the freezer compartment 8 is closed by a drawer door 10 so as to be freely opened and closed.
[0009]
A U-shaped frame 11 having one end fixed to the back surface is fixed to the drawer door 10.
This frame body is fitted to a fixed rail 12 with a roller provided in the main body 5 so as to be slidable in the front-rear direction, and holds a lower container 13 divided into two on the left and right sides. An upper container 14 and an automatic ice maker 15 are disposed above the lower container.
[0010]
On the back of the freezer compartment 8 is provided a cooler chamber 19 that is partitioned by a partition wall 16 and houses a cooler 17 and a blower 18 disposed above the cooler. The partition wall 16 is provided with a slit 18 </ b> A for blowing out the cold air cooled by the cooler 17 in the freezer compartment 8 in front of the blower 18.
[0011]
Reference numeral 20 denotes a mechanical damper thermostat that supplies a part of the cold air cooled by the cooler 17 to the refrigerator compartment 7, and this damper thermostat is a baffle plate 21 that closes the opening, and a heat sensitive part 22 that detects the temperature of the refrigerator compartment 7. It consists of and.
[0012]
The automatic ice maker 15 includes a mounting frame 23 having an opening below, an ice tray 24 accommodated in the frame, and a driving device 25 that rotates the ice tray. An ice tray 26 is formed on one side of the lower container 13 disposed below the ice tray 24.
[0013]
Behind the mounting frame 23 is provided a blowout port 27 for supplying cool air blown from the blower 18 into the mounting frame. This outlet is divided into two by a partition plate 28.
[0014]
29 is a temperature sensor installed outside the partition plate 28 partitioned from the ice tray 24. This temperature sensor directly detects the temperature of the cold air blown from the outlet 27, and detects the temperature in the freezer compartment 8. ing.
[0015]
Reference numeral 30 denotes an outside air temperature sensor provided outside the main body 5.
[0016]
Reference numeral 31 denotes a compressor for cooling the cooler 17, and this compressor is housed in a machine chamber 32 below the main body 5.
[0017]
FIG. 4 shows a control circuit. Reference numeral 33 denotes a temperature sensor 29 and an outside air temperature sensor 30 provided in the freezer compartment 8 to control the operation of the compressor 31 and the blower 18 and the differential of the temperature sensor 29 according to the outside air temperature. The control device is connected to a circuit in which a temperature sensor 29, an outside air temperature sensor 30 and a resistor 34 are bridge-connected, and is connected to an output circuit 35 for driving the compressor 31 and the blower 18. The control device 33 performs on / off control of the operation of the compressor 31 and the blower 18 according to the set value of the temperature sensor 29. The temperature sensor 29 is configured such that the differential changes according to the outside air temperature detected by the outside air temperature sensor 30. That is, the control device 33 changes the differential of the temperature sensor 29 so that the differential is enlarged when the outside air temperature is 25 ° C. or lower and the differential is narrowed when the outdoor temperature is 25 ° C. or higher.
[0018]
In the temperature control device for a refrigerator configured as described above, the compressor 31 and the blower 18 are operated by the control device 33 so that the refrigerator compartment 7 and the freezer compartment 8 are set to a set temperature. The freezer compartment 8 is cooled by the cooler 17 and cooled by the cool air blown out from the slit 18 </ b> A by the blower 18, and the refrigerator compartment 7 adjusts a part of the cool air cooled by the cooler 17 by the mechanical damper thermostat 20. I'm trying to cool it down.
[0019]
The control device 33 controls the compressor 31 and the blower 18 on and off by a temperature sensor 29 that detects the temperature of the freezer compartment 8. Further, the control device 33 changes the operating rate of the compressor 31 by increasing the differential of the temperature sensor 29 to, for example, 6 deg at 25 ° C. or less, and narrowing to 4 deg at 25 ° C. or more, depending on the outside temperature detected by the outside temperature sensor 30. I am doing so. That is, the control device 33 expands the differential of the temperature sensor 29 at a low temperature so that the operation time of the compressor 31 is extended, and the temperature in the refrigerator compartment 7 is set to the set temperature even if the mechanical damper thermostat 20 is used. So that it can be maintained.
[0020]
In the present invention, by changing the differential of the temperature sensor 29 for detecting the temperature of the freezer compartment 8 by the outside air temperature sensor 30 for detecting the outside air temperature, the mechanical damper thermostat 20 having a slow temperature response can be used in the refrigerator compartment 7. The temperature can be maintained at the set temperature.
[0021]
【The invention's effect】
According to the first aspect of the present invention, there is provided a main body having an opening on the front surface and the inside of which is vertically divided into a refrigerator compartment and a freezer compartment, a cooler and a blower housed in the back of the freezer compartment, and the cooler , A mechanical damper that supplies a part of the cold air that has passed through the cooler to the refrigerator compartment, a temperature sensor that detects the temperature of the freezer compartment, and an outside air temperature sensor that detects the outside air temperature The temperature control device for the refrigerator provided with a control device that changes the differential width of the temperature sensor according to the outside air temperature, so that the operation time of the compressor can be changed according to the outside air temperature, and the temperature of the refrigerator compartment can be changed. Even if the damper to be controlled is a mechanical damper, the temperature of the refrigerator compartment can be prevented from becoming higher than the set value when the outside air temperature is low.
[Brief description of the drawings]
FIG. 1 is a sectional view of a refrigerator showing an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing the freezer compartment of the present invention.
FIG. 3 is a perspective view of the automatic ice making machine of the present invention.
FIG. 4 is a control circuit diagram of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Refrigerator 5 Main body 7 Refrigeration room 8 Freezer room 17 Cooler 18 Blower 20 Mechanical damper 29 Temperature sensor 30 Outside temperature sensor 31 Compressor

Claims (1)

前面に開口を有するとともに、内部が上下に冷蔵室及び冷凍室に区画された本体と、前記冷凍室の背部に収納された冷却器及び送風機と、この冷却器の冷却用の圧縮機と、開口を塞ぐバッフル板と冷蔵室の温度を検出する感熱部とで構成され前記冷却器を通った冷気の一部を前記冷蔵室に供給する機械式のダンパーと、前記冷凍室の温度を検出する温度センサーと、外気温度を検出する外気温度センサーとを設けた冷蔵庫の温度制御装置において、
前記温度センサーの設定値によって前記圧縮機及び前記送風機の運転をオン・オフ制御し、前記外気温度が低温時には前記温度センサーのディファレンシャルの幅を拡大する制御装置を備えたことを特徴とする冷蔵庫の温度制御装置。A main body having an opening on the front surface, the interior of which is vertically divided into a refrigerator compartment and a freezer compartment, a cooler and a blower housed in the back of the freezer compartment, a compressor for cooling the cooler, and an opening a mechanical damper supplying part to the refrigerating chamber cold air is composed of a heat-sensitive part passed through the cooler to detect the temperature of the baffle plate and refrigerating compartment to close the temperature for detecting the temperature of the freezing chamber In the refrigerator temperature control device provided with a sensor and an outside air temperature sensor for detecting the outside air temperature,
An on-off control of the operation of the compressor and the blower according to a set value of the temperature sensor, and a control device that expands a differential width of the temperature sensor when the outside air temperature is low is provided. Temperature control device.
JP31208095A 1995-11-30 1995-11-30 Refrigerator temperature control device Expired - Lifetime JP3744575B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31208095A JP3744575B2 (en) 1995-11-30 1995-11-30 Refrigerator temperature control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31208095A JP3744575B2 (en) 1995-11-30 1995-11-30 Refrigerator temperature control device

Publications (2)

Publication Number Publication Date
JPH09152247A JPH09152247A (en) 1997-06-10
JP3744575B2 true JP3744575B2 (en) 2006-02-15

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JP31208095A Expired - Lifetime JP3744575B2 (en) 1995-11-30 1995-11-30 Refrigerator temperature control device

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6918259B2 (en) * 2003-07-31 2005-07-19 Troy M. Anderson Air circulation and filtration system for a refrigerator
JP7112338B2 (en) * 2019-01-10 2022-08-03 東芝ライフスタイル株式会社 refrigerator

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