JP2016044942A - refrigerator - Google Patents
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- JP2016044942A JP2016044942A JP2014171738A JP2014171738A JP2016044942A JP 2016044942 A JP2016044942 A JP 2016044942A JP 2014171738 A JP2014171738 A JP 2014171738A JP 2014171738 A JP2014171738 A JP 2014171738A JP 2016044942 A JP2016044942 A JP 2016044942A
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Abstract
Description
本発明は、冷蔵庫における結露防止等の防露構成に関するものである。 The present invention relates to a dew-proof structure such as dew condensation prevention in a refrigerator.
一般に冷蔵庫は冷蔵庫本体内に冷蔵室、冷凍室、野菜室等の貯蔵室を有し、この各貯蔵室は扉によって開閉自在となっている。そして、上記各貯蔵室と外気との間には大きな温度差があるため、扉を開いた時などには各貯蔵室の開口端面や観音式扉の突合せ端面に設けた回転遮蔽板等に結露が生じることがある。そのため、冷蔵庫には結露発生を防止する防露構成が施してある（例えば特許文献１参照）。 Generally, a refrigerator has storage rooms such as a refrigerator compartment, a freezer compartment, and a vegetable compartment in a refrigerator body, and each storage compartment can be opened and closed by a door. Since there is a large temperature difference between each storage room and the outside air, when the door is opened, condensation is formed on the opening end face of each storage room or the rotating shielding plate provided on the butt end face of the kannon door. May occur. For this reason, the refrigerator is provided with a dew-proof structure that prevents the occurrence of condensation (for example, see Patent Document 1).
図６は特許文献１の冷蔵庫を示し、この冷蔵庫は結露防止時の庫内温度上昇を抑制するものではあるが、その防露構成は、扉開放時間検出用ドアスイッチとともに外気温度センサ１０１と外気湿度センサ１０２を設け、これら両センサからの出力から相対湿度を算出して結露防止用ヒータ１０３の通電を制御し発露部分の温度を上げ結露を防止している。 FIG. 6 shows a refrigerator disclosed in Patent Document 1. This refrigerator suppresses a rise in the internal temperature when condensation is prevented, and the dew-proof configuration includes an outside air temperature sensor 101 and an outside air together with a door switch for detecting a door opening time. A humidity sensor 102 is provided, and the relative humidity is calculated from the outputs from both sensors and the energization of the dew condensation prevention heater 103 is controlled to increase the temperature of the dew condensation portion to prevent dew condensation.
上記特許文献１の防露構成によれば、冷蔵庫を設置している部分の外気が結露発生しやすい状況になる、すなわち結露防止が必要になると、結露防止用ヒータ１０３を通電して観音式扉の回転遮蔽板等の温度を上昇させ結露防止するので、無駄な通電を行うことなく効率よく結露防止でき、省エネ性を確保できる利点がある。 According to the dew-proof structure of the above-mentioned Patent Document 1, when the outside air in the portion where the refrigerator is installed is likely to cause dew condensation, that is, when dew condensation prevention is required, the dew condensation prevention heater 103 is energized to open the door. Since the temperature of the rotating shielding plate or the like is raised to prevent condensation, there is an advantage that the condensation can be prevented efficiently without wasteful energization and energy saving can be ensured.
しかしながら、上記防露構成において、一般的に外気温度センサ１０１は結露が発生しやすい部分、例えば回転遮蔽板付近の温度を検出するのが好ましく、扉、例えば観音式扉の操作部等に設けられ、外気湿度センサ１０２は前記観音式扉等各貯蔵室の扉を開いたときに貯蔵室から漏出する冷気の影響を受けないようにするのが好ましいので、冷気の影響を受けない部分、例えば冷蔵庫本体の上面部に設けられている。 However, in the above-described dew-proof configuration, it is generally preferable that the outside air temperature sensor 101 detects the temperature at which condensation is likely to occur, for example, the temperature in the vicinity of the rotation shielding plate, and is provided at the door, for example, the operation part of the sight-type door. The outside air humidity sensor 102 is preferably not affected by the cold air leaking from the storage room when the door of each storage room such as the kannon door is opened. It is provided on the upper surface of the main body.
ところが、ここで最近の冷蔵庫は、冷蔵庫本体の庫内容積を増やすべく、冷蔵庫本体の背面に設けていた制御ユニットを冷蔵庫本体の上面に設けるようになってきていて、冷蔵庫本体上面の温度は制御ユニットの発熱により高くなる傾向にあり、外気温度センサ１０１が設けられている扉付近の外気温度と冷蔵庫本体上面の外気温度との間に大きな温度差が生じ始めている。その結果、扉付近に設けてある外気温度センサ１０１からの温度と冷蔵庫本体上面に設けられている外気湿度センサ１０２からの湿度出力に基づいて算出する相対湿度（結露しやすさの目安になる湿度）が実際の扉付近における相対湿度と異なるものとなってしまう。そのため、扉付近の雰囲気温度における相対湿度を正確に検出できず、その結果適切に防露動作ができずに結露を起したり、無駄にエネルギーを消費したりする、ということが生じていた。 However, in recent refrigerators, in order to increase the internal volume of the refrigerator body, a control unit provided on the back surface of the refrigerator body is provided on the top surface of the refrigerator body, and the temperature on the top surface of the refrigerator body is controlled. The temperature tends to increase due to the heat generated by the unit, and a large temperature difference is starting to occur between the outside air temperature near the door where the outside air temperature sensor 101 is provided and the outside air temperature on the top surface of the refrigerator body. As a result, the relative humidity calculated based on the temperature from the outside air temperature sensor 101 provided in the vicinity of the door and the humidity output from the outside air humidity sensor 102 provided on the top surface of the refrigerator main body (humidity that is a measure of the ease of condensation). ) Will be different from the relative humidity near the actual door. For this reason, the relative humidity at the ambient temperature in the vicinity of the door cannot be accurately detected, and as a result, the proper dew-proof operation cannot be performed, causing dew condensation or wasteful energy consumption.
このような外気温度検出センサ１０１と外気湿度センサ１０２の設置位置が異なることによって生じる相対湿度検出精度の悪さは、前記外気温度センサ１０１と外気湿度センサ１０２を同じ場所に設けることによって解決できる。しかしながら、外気温度センサ１０１と外気湿度センサ１０２を発露部分の温度検出に適切な扉付近に設けた場合は、既述し
たように扉を開いたときに漏出する冷気の影響を受けて正確な湿度検出ができなくなり、逆に、冷気の影響を受けない冷蔵庫本体上面部に設けると、制御ユニットからの熱の影響を受けて発露を防止する扉付近とはかけ離れた上面部分の相対湿度を検出することになり、発露防止が必要な扉付近の正確な相対湿度の検出ができなくなる。その結果、いずれの場合も、正確な相対湿度に基づく防露制御ができなく、結露を起こしたり、無駄にエネルギーを消費したりする課題が残ってしまうことになる。
Such poor relative humidity detection accuracy caused by the different installation positions of the outside air temperature detection sensor 101 and the outside air humidity sensor 102 can be solved by providing the outside air temperature sensor 101 and the outside air humidity sensor 102 in the same place. However, when the outside air temperature sensor 101 and the outside air humidity sensor 102 are provided near the door suitable for detecting the temperature of the dew portion, as described above, the accurate humidity is affected by the cold air leaked when the door is opened. If it is installed on the top surface of the refrigerator main body, which cannot be detected and is not affected by cold air, it detects the relative humidity of the top surface that is far from the vicinity of the door to prevent dew generation due to the heat from the control unit. As a result, it becomes impossible to accurately detect the relative humidity in the vicinity of the door that needs to prevent dew generation. As a result, in any case, dew prevention control based on accurate relative humidity cannot be performed, and there remains a problem of causing dew condensation or wasteful energy consumption.
本発明はこのような点に鑑みてなしたもので、発露防止付近の相対湿度を精度良く検出できるようにして少ないエネルギー消費で確実に結露防止できる信頼性の高い省エネ型冷蔵庫の提供を目的としたものである。 The present invention has been made in view of such points, and an object thereof is to provide a highly reliable energy-saving refrigerator capable of accurately detecting the relative humidity in the vicinity of dew prevention and reliably preventing dew condensation with low energy consumption. It is a thing.
本発明は上記目的を達成するために、冷蔵庫本体設置部分の外気温度及び外気湿度を検出する外気温度センサ及び外気湿度センサを冷蔵庫本体のそれぞれ別々の場所に備え、前記両センサからの出力に基づき制御部が防露手段を制御する冷蔵庫であって、前記外気湿度センサの近傍には前記外気温度センサとは別に当該外気湿度センサ近傍の温度を検出する温度センサを設け、前記制御部は前記温度センサによって補正した外気湿度センサの出力と前記外気温センサからの出力とに基づき前記防露手段を制御する構成としてある。 In order to achieve the above object, the present invention is provided with an outside air temperature sensor and an outside air humidity sensor for detecting the outside air temperature and the outside air humidity at the refrigerator body installation portion in separate places of the refrigerator body, and based on the outputs from the both sensors. The control unit is a refrigerator that controls dew prevention means, and a temperature sensor that detects a temperature in the vicinity of the outside air humidity sensor is provided in the vicinity of the outside air humidity sensor in addition to the outside air temperature sensor, and the control unit has the temperature The dew proof means is controlled based on the output of the outside humidity sensor corrected by the sensor and the output from the outside air temperature sensor.
これにより、外気湿度センサが検出した湿度をその近傍に設けた温度センサが検出する温度に基づき補正して絶対湿度とし、その絶対湿度と外気温度センサが検出した本体周囲温度とによって相対湿度を算出して防露手段を制御するので、外気温度センサと外気湿度センサが別々の場所、例えば扉付近と冷蔵庫本体上面付近に設けられていてこれら両部分の外気温度に大きな差があったとしても、正確な相対湿度が検出できる。したがって、防露手段の制御を精度よく行うことができ、結露防止を確実なものとすると同時に、結露が発生するような条件でないときに防露手段に通電してエネルギーを無駄に浪費することもなくすることができる。 As a result, the humidity detected by the outside air humidity sensor is corrected based on the temperature detected by the temperature sensor provided in the vicinity to obtain the absolute humidity, and the relative humidity is calculated based on the absolute humidity and the ambient temperature detected by the outside air temperature sensor. Therefore, even if there is a large difference in the outside air temperature between these parts, the outside temperature sensor and the outside humidity sensor are provided in separate places, for example, near the door and near the top surface of the refrigerator body. Accurate relative humidity can be detected. Therefore, it is possible to control the dew prevention means with high accuracy and to ensure the prevention of dew condensation. At the same time, when the conditions are not such that dew condensation occurs, the dew prevention means can be energized to waste energy. Can be eliminated.
本発明は、上記構成により、結露発生を精度よく防止できるとともにエネルギーの浪費も抑制でき、信頼性が高く省エネ性の高い冷蔵庫とすることができる。 According to the above configuration, the present invention can prevent the occurrence of condensation with high accuracy and can suppress energy waste, and can provide a highly reliable and energy-saving refrigerator.
第１の発明は、冷蔵庫本体設置部分の外気温度及び外気湿度を検出する外気温度センサ及び外気湿度センサを冷蔵庫本体のそれぞれ別々の場所に備え、前記両センサからの出力に基づき制御部が防露手段を制御する冷蔵庫であって、前記外気湿度センサの近傍には前記外気温度センサとは別に当該外気湿度センサ近傍の温度を検出する温度センサを設け、前記制御部は前記温度センサによって補正した外気湿度センサの出力と前記外気温センサからの出力とに基づき前記防露手段を制御する構成としてある。 The first invention is provided with an outside air temperature sensor and an outside air humidity sensor for detecting the outside air temperature and the outside air humidity at the refrigerator main body installation portion in separate places of the refrigerator main body, and the control unit prevents dew condensation based on the outputs from the both sensors. And a temperature sensor for detecting a temperature in the vicinity of the outside air humidity sensor, in addition to the outside air temperature sensor, and the control unit corrects the outside air corrected by the temperature sensor. The dew proof means is controlled based on the output from the humidity sensor and the output from the outside air temperature sensor.
これにより、外気湿度センサが検出した湿度をその近傍に設けた温度センサが検出する
温度に基づき補正して絶対湿度とし、その絶対湿度と外気温度センサが検出した本体周囲温度とによって相対湿度を算出して防露手段を制御するので、外気温度センサと外気湿度センサが別々の場所、例えば扉付近と冷蔵庫本体上面付近に設けられていてこれら両部分の外気温度に大きな差があったとしても、正確な相対湿度が検出できる。したがって、防露手段の制御を精度よく行うことができ、結露防止を確実なものとすると同時に、結露が発生するような条件でないときに防露手段に通電してエネルギーを無駄に浪費することもなくすることができる。
As a result, the humidity detected by the outside air humidity sensor is corrected based on the temperature detected by the temperature sensor provided in the vicinity to obtain the absolute humidity, and the relative humidity is calculated based on the absolute humidity and the ambient temperature detected by the outside air temperature sensor. Therefore, even if there is a large difference in the outside air temperature between these parts, the outside temperature sensor and the outside humidity sensor are provided in separate places, for example, near the door and near the top surface of the refrigerator body. Accurate relative humidity can be detected. Therefore, it is possible to control the dew prevention means with high accuracy and to ensure the prevention of dew condensation. At the same time, when the conditions are not such that dew condensation occurs, the dew prevention means can be energized to waste energy. Can be eliminated.
第２の発明は、第１の発明において、前記制御部は外気温度センサ及び外気湿度センサのいずれのセンサも冷蔵庫本体への設置位置による本体影響補正を行い、その本体影響補正後の出力を基に防露手段を制御する構成としてある。 In a second aspect based on the first aspect, the control unit performs body effect correction according to the installation position of the outside air temperature sensor and the outside air humidity sensor on the refrigerator body, and the output after the body effect correction is performed. In this configuration, the dew protection means is controlled.
これにより、外気温度センサ及び外気湿度センサの冷蔵庫本体に対する設置位置による影響を加味した形でより正確な制御可能となり、結露発生防止とエネルギー浪費防止をより確実に行うことができる。 Thereby, it becomes possible to perform more accurate control in consideration of the influence of the installation position of the outside air temperature sensor and the outside air humidity sensor on the refrigerator main body, and it is possible to more reliably prevent the occurrence of condensation and the waste of energy.
第３の発明は、第１または第２の発明において、前記外気温度センサは冷蔵庫本体の扉付近に設けるとともに、外気湿度センサは前記冷蔵庫本体の上面部付近に設け、かつ、防露手段は観音式扉の突合せ端面の回転遮蔽板に設けたヒータとした構成としてある。 According to a third invention, in the first or second invention, the outside air temperature sensor is provided in the vicinity of the door of the refrigerator body, the outside air humidity sensor is provided in the vicinity of the upper surface portion of the refrigerator body, and the dew proofing means is a kannon It is set as the heater provided in the rotation shielding board of the butt end surface of a type | formula door.
これにより、防露を必要とする回転遮蔽板を有する扉付近の外気温に基づいて防露手段の通電を制御できると同時に、扉を開いたときに漏出する冷気の影響を受けることなく正確に湿度を検出することも可能となり、これらの相乗作用によってより効率の良い防露制御が可能となる。その結果、一段と精度の高い結露防止と省エネ化が実現できる。 This makes it possible to control the energization of the dew prevention means based on the outside air temperature near the door that has a rotating shielding plate that requires dew prevention, and at the same time accurately without being affected by the cold air that leaks when the door is opened. It is also possible to detect the humidity, and the synergistic action of these enables more efficient dew prevention control. As a result, more accurate condensation prevention and energy saving can be realized.
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、この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 embodiments.
（実施の形態１）
図１は本発明の実施の形態１における冷蔵庫の斜視図、図２は同実施の形態１における冷蔵庫の縦断面図、図３は同実施の形態１における冷蔵庫の外気湿度センサ及び温度センサ設置部分を示す斜視図、図４は同実施の形態１における冷蔵庫の防露制御を行う制御回路図、図５は同実施の形態１における冷蔵庫の防露制御を示すフローチャートである。
(Embodiment 1)
1 is a perspective view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a longitudinal sectional view of the refrigerator according to Embodiment 1, and FIG. 3 is an outside air humidity sensor and temperature sensor installation portion of the refrigerator according to Embodiment 1. 4 is a control circuit diagram for performing dew prevention control of the refrigerator in the first embodiment, and FIG. 5 is a flowchart showing the dew prevention control of the refrigerator in the first embodiment.
図１〜図３において、１は冷蔵庫本体で、断熱性の仕切板２によって複数の貯蔵室に区分されており、上から冷蔵室３（平均庫内温度は約＋３℃）、切換室４（同、冷凍室に切換えた時；約−２０℃、冷蔵室に切換えた時；約＋３℃）、冷凍室５（同、約−２０℃）、そして野菜室６（同、約＋５℃）となっている。 1 to 3, reference numeral 1 denotes a refrigerator body, which is divided into a plurality of storage rooms by a heat-insulating partition plate 2, and from the top is a refrigerated room 3 (the average inside temperature is about + 3 ° C.), a switching room 4 ( When switched to the freezer compartment; about -20 ° C, when switched to the refrigerated room; about + 3 ° C), freezer compartment 5 (same, about -20 ° C), and vegetable room 6 (same, about + 5 ° C) It has become.
また、上記各貯蔵室の前面開口部は、冷蔵室３を開閉する観音開き式の扉７、切換室４、冷凍室５、野菜室６を開閉する引出式の扉８ａ、８ｂ、９が設けてある。そして、上記観音開き式の扉７にはその左右の扉の閉成時の突合せ端面を遮蔽する回転遮蔽板（図示せず）が設けてある。 The front opening of each storage room is provided with a double door 7 that opens and closes the refrigerating room 3, a switching room 4, a freezer room 5, and drawer type doors 8 a, 8 b and 9 that open and close the vegetable room 6. is there. The double door 7 is provided with a rotation shielding plate (not shown) that shields the butt end face when the left and right doors are closed.
また、前記冷蔵庫本体１の上面部には冷蔵庫全体の制御を行う制御ユニット１０が設けてある。 A control unit 10 that controls the entire refrigerator is provided on the upper surface of the refrigerator body 1.
なお、前記冷蔵庫本体１の上面部後方領域には機械室１１が設けられている。機械室１１には、圧縮機１２、水分除去を行うドライヤ（図示せず）等の冷凍サイクルの高圧側構成部品が収容されている。 A machine room 11 is provided in the rear area of the upper surface of the refrigerator body 1. The machine room 11 accommodates high-pressure components of the refrigeration cycle such as the compressor 12 and a dryer (not shown) for removing moisture.
また、前記冷蔵庫本体１の冷凍室背面には冷気を生成する冷却室１３が設けられており、冷却室１３からは各室に冷気を供給する冷気通路１４が形成されている。 A cooling chamber 13 for generating cool air is provided on the back of the freezer compartment of the refrigerator body 1, and a cool air passage 14 for supplying cool air to each chamber is formed from the cooling chamber 13.
冷却室１３内には冷却器１５が配設されており、冷却器１５の上部には冷却ファン１６が配置されている。 A cooler 15 is disposed in the cooling chamber 13, and a cooling fan 16 is disposed above the cooler 15.
前記冷却ファン１６は、冷却器１５により生成された冷気を、冷気通路１４を介して、冷蔵室３、切換室４，冷凍室５、野菜室６に強制循環させ各室を冷却する。 The cooling fan 16 forcibly circulates the cold air generated by the cooler 15 through the cold air passage 14 to the refrigerating room 3, the switching room 4, the freezing room 5, and the vegetable room 6 to cool each room.
ここで、上記冷蔵庫本体１の特に温度が低く発露しやすい部分、例えば観音開き式扉の回転遮蔽板や仕切板２の前端面には防露手段としての結露防止ヒータ１７ａ〜１７ｃ（図４の回路図に示す）（以下、結露防止ヒータ１７ａ〜１７ｃを含めて結露防止ヒータ１７という）が設けてある。 Here, the portions of the refrigerator main body 1 that are particularly low in temperature and prone to dew, for example, the rotation shielding plate of the double door and the front end surface of the partition plate 2 are provided with anti-condensation heaters 17a to 17c as dew preventing means (the circuit of FIG. (Hereinafter, the anti-condensation heater 17 including the anti-condensation heaters 17a to 17c is provided).
また、冷蔵庫本体１には冷蔵庫設置部分の外気温度を検出する外気温度センサ１８が設けてある。この実施の形態では前記外気温度センサ１８は、図１に示すように発露しやすい回転遮蔽板付近の温度を検出すべくこれが設けてある観音開き式の扉７の例えば操作部１９等に組み込んである。 Further, the refrigerator body 1 is provided with an outside air temperature sensor 18 for detecting the outside air temperature at the refrigerator installation part. In this embodiment, as shown in FIG. 1, the outside air temperature sensor 18 is incorporated in, for example, the operation unit 19 of the double door 7 provided with the same so as to detect the temperature in the vicinity of the rotary shielding plate that is likely to generate dew. .
更に、前記冷蔵庫本体１には冷蔵庫設置部分の外気湿度を検出する外気湿度センサ２０が設けてある。この外気湿度センサ２０はこの実施の形態では前記観音式の扉７を開いたときに漏出する冷気の影響を受けないように冷蔵庫本体１の上面部に設けてある。例えば図３に示すように冷蔵庫本体１の扉７を支えるヒンジ２１のヒンジカバー２２内に組み込んである。 Further, the refrigerator body 1 is provided with an outside air humidity sensor 20 for detecting the outside air humidity at the refrigerator installation part. In this embodiment, the outside air humidity sensor 20 is provided on the upper surface of the refrigerator body 1 so as not to be affected by the cold air that leaks when the kannon door 7 is opened. For example, as shown in FIG. 3, it is incorporated in a hinge cover 22 of a hinge 21 that supports the door 7 of the refrigerator body 1.
そして更にこの冷蔵庫では、前記ヒンジカバー２２内に前記外気温度センサ１８とは別に温度センサ２３を設け、外気湿度センサ２０近傍の外気温を検出するようになっている。 Further, in this refrigerator, a temperature sensor 23 is provided in the hinge cover 22 in addition to the outside air temperature sensor 18 to detect the outside air temperature in the vicinity of the outside air humidity sensor 20.
図４は、前記結露防止ヒータ１７の制御回路を示し、この制御回路は外気温度センサ１８と、外気湿度センサ２０及び外気湿度センサ２０近傍の温度センサ２３からの検知信号を入力する制御部２４を備える。そして上記制御部２４は、前記各センサからの検知信号に基づいて各結露防止ヒータ１７への通電量を算出し、これに基づきスイッチ素子２５ａ〜２５ｃ（以下、スイッチ素子２５ａ〜２５ｃを含めてスイッチ素子２５という）を制御して結露防止ヒータ１７の通電および停止と通電量制御を行うようになっている。 FIG. 4 shows a control circuit for the dew condensation prevention heater 17, which includes an outside air temperature sensor 18, and a control unit 24 for inputting detection signals from the outside air humidity sensor 20 and the temperature sensor 23 in the vicinity of the outside air humidity sensor 20. Prepare. Then, the control unit 24 calculates the energization amount to each dew condensation prevention heater 17 based on the detection signal from each sensor, and based on this, the switch elements 25a to 25c (hereinafter, including the switch elements 25a to 25c and the switch elements) The element 25 is controlled to perform energization and stop of the dew condensation prevention heater 17 and the energization amount control.
以下、上記構成における防露制御、すなわち各結露防止ヒータ１７の通電量制御を図５のフローチャートを用いて説明する。 Hereinafter, the dew prevention control in the above configuration, that is, the energization amount control of each dew condensation prevention heater 17 will be described with reference to the flowchart of FIG.
まず、制御部２４は、所定時間、例えば２０分経過（Ｓ１）毎に冷蔵庫の外気温度センサ１８、および外気湿度センサ２０と温度センサ２３からの温度及び湿度を取得（Ｓ２）する。 First, the control unit 24 acquires the temperature and humidity from the outside air temperature sensor 18 of the refrigerator and the outside air humidity sensor 20 and the temperature sensor 23 every predetermined time, for example, every 20 minutes (S1) (S2).
次にこの実施の形態では、上記取得した温度及び湿度の本体影響補正を行う（Ｓ３）。すなわち、当該各センサを設けた冷蔵庫本体１の場所特有の影響（実際の温度との差）を補正する。これは、例えば外気温度センサ１８を扉７の操作部１９内の扉内空間に設けた場合や、外気湿度センサ２０および温度センサ２３をヒンジカバー２２内の空間に設けた場合に検出する温度及び湿度と、実際の冷蔵庫設置部分の外気温度及び湿度との差を実験によってあらかじめ求めておき、この差を係数化して補正する。これにより、各センサの
設置位置における検出温度及び湿度と実際の温度及び湿度との差を解消し、以後の防露制御を精度の良いものとすることができる。
Next, in this embodiment, correction of the main body influence of the acquired temperature and humidity is performed (S3). That is, the influence (difference from actual temperature) peculiar to the location of the refrigerator main body 1 provided with the sensors is corrected. This is because, for example, the temperature detected when the outside air temperature sensor 18 is provided in the door interior space in the operation unit 19 of the door 7 or when the outside air humidity sensor 20 and the temperature sensor 23 are provided in the space inside the hinge cover 22. The difference between the humidity and the outside air temperature and humidity of the actual refrigerator installation part is obtained in advance by experiment, and this difference is converted into a coefficient to be corrected. Thereby, the difference between the detected temperature and humidity at the installation position of each sensor and the actual temperature and humidity can be eliminated, and the subsequent dew prevention control can be made highly accurate.
次に上記本体影響補正を行った後の外気湿度センサ２０の湿度出力を当該外気湿度センサ２０近傍に設けた温度センサ２３からの温度出力に基づき補正し、絶対湿度出力に補正する（Ｓ４）。 Next, the humidity output of the outside air humidity sensor 20 after performing the main body influence correction is corrected based on the temperature output from the temperature sensor 23 provided in the vicinity of the outside air humidity sensor 20, and is corrected to an absolute humidity output (S4).
その後上記絶対湿度出力を外気温度センサ１８が検出する温度に基づき補正し、当該外気温度センサ１８が検出する付近の本体周囲部分の相対湿度を得る（Ｓ５）。 Thereafter, the absolute humidity output is corrected based on the temperature detected by the outside air temperature sensor 18 to obtain the relative humidity of the vicinity of the main body detected by the outside air temperature sensor 18 (S5).
そして、上記相対湿度とあらかじめ冷蔵庫本体１の庫内温度設定値等より算出された外気温度と外気湿度に応じた各結露防止ヒータ１７への通電量を算出し（Ｓ６）、各結露防止ヒータ１７の通電／停止及び通電量の変更を行う（Ｓ７）。 And the energization amount to each dew condensation prevention heater 17 according to the above-mentioned relative humidity and the outside air temperature and the outside air humidity calculated in advance from the internal temperature setting value of the refrigerator body 1 is calculated (S6), and each dew condensation prevention heater 17 is calculated. Energization / stop and the energization amount are changed (S7).
以上のようにこの冷蔵庫では、外気湿度センサ２０が検出した湿度をその近傍に設けた温度センサ２３が検出する温度に基づき補正して絶対湿度とし、その絶対湿度と外気温度センサ１８が検出した本体周囲温度とによって相対湿度を算出して結露防止ヒータを制御するので、外気温度センサ１８と外気湿度センサ２０が別々の場所、すなわち扉付近と冷蔵庫本体上面付近に設けられていてこれら両部分の外気温度に大きな差があったとしても、正確な相対湿度が検出できる。したがって、結露防止ヒータ１７の制御を精度よく行うことができ、結露防止を確実なものとすると同時に、結露が発生するような条件でないときに結露防止ヒータ１７に通電してエネルギーを無駄に浪費することもなくすることができる。 As described above, in this refrigerator, the humidity detected by the outside air humidity sensor 20 is corrected based on the temperature detected by the temperature sensor 23 provided in the vicinity thereof to obtain the absolute humidity, and the main body detected by the absolute humidity and the outside air temperature sensor 18 is detected. Since the relative humidity is calculated according to the ambient temperature and the dew condensation prevention heater is controlled, the outside air temperature sensor 18 and the outside air humidity sensor 20 are provided in different places, that is, near the door and near the top surface of the refrigerator main body. Even if there is a large difference in temperature, an accurate relative humidity can be detected. Therefore, it is possible to control the condensation prevention heater 17 with high accuracy and to ensure prevention of condensation, and at the same time, energize the condensation prevention heater 17 when the condition does not cause condensation to waste energy. You can do without.
また、この実施の形態では、前記制御部２４は外気温度センサ１８及び外気湿度センサ２０、温度センサ２３のいずれのセンサも冷蔵庫本体１への設置場所による本体影響補正を行い、その本体影響補正後の出力を基に結露防止ヒータ１７を制御するから、これらの影響を加味した形での制御が可能となり、より確実な結露発生防止とエネルギー浪費防止を図ることができる。 Further, in this embodiment, the control unit 24 performs the main body influence correction according to the installation location in the refrigerator main body 1 for all of the outside air temperature sensor 18, the outside air humidity sensor 20, and the temperature sensor 23. Since the dew condensation prevention heater 17 is controlled based on the output of the above, it is possible to control in a form taking these influences into account, and it is possible to more surely prevent dew generation and waste energy.
加えて、前記外気温度センサ１８は冷蔵庫本体の扉７付近に設けるとともに、外気湿度センサ２０は前記冷蔵庫本体１の上面部付近に設けてあるから、防露を必要とする回転遮蔽板等に最も近い扉付近の外気温に基づいて結露防止ヒータ１７の通電を制御できると同時に、扉７を開いたときに漏出する冷気の影響を受けることなく正確に湿度を検出することが可能となる。その結果、これらの相乗作用によってより効率の良い防露制御が可能となり、一段と精度の高い結露防止と省エネ化が可能となる。 In addition, the outside air temperature sensor 18 is provided in the vicinity of the door 7 of the refrigerator body, and the outside air humidity sensor 20 is provided in the vicinity of the upper surface portion of the refrigerator body 1, so that it is most suitable for a rotation shielding plate or the like that requires dew prevention. The energization of the dew condensation prevention heater 17 can be controlled based on the outside air temperature near the door, and at the same time, the humidity can be accurately detected without being affected by the cold air that leaks when the door 7 is opened. As a result, these synergistic actions enable more efficient dew prevention control, and more highly accurate dew prevention and energy saving.
以上、本発明に係る冷蔵庫について、上記実施の形態を用いて説明したが、本発明は、これに限定されるものではない。すなわち、今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。つまり、本発明の範囲は上記した説明ではなくて特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 As mentioned above, although the refrigerator concerning this invention was demonstrated using the said embodiment, this invention is not limited to this. That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
例えば防露手段として結露防止ヒータを例示したが、これは例えば仕切板であれば冷凍サイクルの放熱パイプを設ける等して構成してもよいものであるし、防露する部分も回転遮蔽板や仕切板のみに限られるものでもない。 For example, a dew condensation prevention heater has been exemplified as the dew proof means, but this may be configured by providing a heat radiating pipe of a refrigeration cycle, for example, as long as it is a partition plate. It is not limited to partition plates.
以上のように、本発明は、結露発生を精度よく防止できるとともにエネルギーの浪費も抑制でき、信頼性が高く省エネ性の高い冷蔵庫とすることができる。よって、家庭用冷蔵
庫をはじめとして業務用冷蔵庫、自動販売機など他の冷凍冷蔵応用商品にも広く適用できる。
As described above, the present invention can prevent the occurrence of condensation with high accuracy and can suppress energy waste, and can provide a highly reliable and energy-saving refrigerator. Therefore, the present invention can be widely applied to other refrigerator-freezer applied products such as home refrigerators, commercial refrigerators, and vending machines.
１ 冷蔵庫本体
２ 仕切板
３ 冷蔵室
４ 切換室
５ 冷凍室
６ 野菜室
７，８ａ，８ｂ，９ 扉
１０ 制御ユニット
１１ 機械室
１２ 圧縮機
１３ 冷却室
１４ 冷気通路
１５ 冷却器
１６ 冷却ファン
１７，１７ａ，１７ｂ，１７ｃ 結露防止ヒータ（防露手段）
１８ 外気温度センサ
１９ 操作部
２０ 外気湿度センサ
２１ ヒンジ
２２ ヒンジカバー
２３ 温度センサ
２４ 制御部
２５，２５ａ，２５ｂ，２５ｃ スイッチ素子
DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Partition plate 3 Refrigerating room 4 Switching room 5 Freezing room 6 Vegetable room 7, 8a, 8b, 9 Door 10 Control unit 11 Machine room 12 Compressor 13 Cooling room 14 Cooling air passage 15 Cooler 16 Cooling fan 17, 17a , 17b, 17c Condensation prevention heater (dew prevention means)
DESCRIPTION OF SYMBOLS 18 Outside temperature sensor 19 Operation part 20 Outside air humidity sensor 21 Hinge 22 Hinge cover 23 Temperature sensor 24 Control part 25, 25a, 25b, 25c Switch element
Claims (3)
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| CN113959148A (en) * | 2021-11-29 | 2022-01-21 | 四川虹美智能科技有限公司 | Method and system for detecting cold air leakage of intelligent refrigeration equipment |
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