JP6654329B2 - How to issue a temperature alarm for frozen and refrigerated showcases - Google Patents
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- 238000012937 correction Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 230000010354 integration Effects 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
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Description
本発明は、冷凍・冷蔵ショーケースの庫内温度が上昇した場合に温度警報を発報するようにした冷凍・冷蔵ショーケースの温度警報発報方法に関する。 The present invention relates to a method for issuing a temperature alarm for a frozen / refrigerated showcase, wherein the temperature alert is issued when the temperature inside the refrigerator / refrigerated showcase rises.
従来、スーパーマーケットやコンビニエンスストア等の店舗では、商品を陳列する機器として冷凍・冷蔵ショーケースが使用されている。これらの冷凍・冷蔵ショーケースでは、何らかの不具合により商品陳列室内の温度（庫内温度）が許容温度以上に上昇すると、陳列されている商品が傷んでしまう。そこで、庫内温度が許容温度より高い或る一定温度（警報温度）以上に上昇した場合には温度警報を発報し、ユーザーに庫内温度の上昇を伝えるようにしている。但し、庫内温度が警報温度に上昇した場合に直ちに温度警報を発報すると、冷却器の除霜時や商品陳列室内への商品陳列作業時における庫内温度の上昇によっても温度警報が発報されることになる。このような除霜時や商品陳列作業時における庫内温度の上昇は、冷凍・冷蔵ショウケースの不具合に伴う温度上昇ではないため、温度警報を発報しないようにすることが望ましい。そこで、温度警報の発報を、庫内温度が警報温度以上に上昇し、かつ、その状態が一定の経過時間（遅延時間）を経過した場合に行うことが一般的である。そして、除霜時や商品陳列時の温度上昇等のショーケースの不具合でない温度上昇時に温度警報を発報させないようにするためには、警報温度を高めに設定し、遅延時間長めに設定する必要がある。 Conventionally, in stores such as supermarkets and convenience stores, frozen / refrigerated showcases have been used as devices for displaying products. In these freezer / refrigerated showcases, if the temperature in the product display room (inside temperature) rises above the allowable temperature due to some kind of trouble, the displayed products are damaged. Therefore, when the internal temperature rises above a certain temperature (alarm temperature) higher than the allowable temperature, a temperature alarm is issued to inform the user of the increase in the internal temperature. However, if a temperature alarm is issued immediately when the internal temperature rises to the alarm temperature, a temperature alarm will also be issued due to an increase in the internal temperature when the cooler is defrosted or when products are displayed in the product display room. Will be done. Such an increase in the internal temperature during defrosting or during the display of goods is not a temperature increase due to a malfunction of the freezing / refrigeration showcase, and therefore it is desirable not to issue a temperature alarm. Therefore, it is common to issue a temperature alarm when the internal temperature rises to or above the alarm temperature and the state has passed a certain elapsed time (delay time). In order to prevent a temperature alarm from being issued when the temperature rise is not a malfunction of the showcase such as a temperature rise during defrosting or product display, the alarm temperature must be set higher and the delay time set longer. There is.
また、冷凍・冷蔵ショーケースの管理を集中管理盤を用いて行い、庫内温度の上昇等の不具合が発生した場合に警備会社、メンテナンス会社、自社メンテナンス部門等に温度警報を含む各種の警報を発報するようにした場合において、警備会社、メンテナンス会社、自社メンテナンス部門等ごとに温度警報を発報する条件である警報温度や遅延時間を夫々異なる値に設定したものが知られている（下記特許文献１参照）。 In addition, the centralized control panel manages the freezing and refrigeration showcases, and when a problem such as an increase in the temperature inside the refrigerator occurs, various alarms including a temperature alarm are issued to a security company, a maintenance company, and the company's own maintenance department. In the case where the alarm is issued, it is known that the alarm temperature and the delay time, which are conditions for issuing a temperature alarm, are set to different values for each of a security company, a maintenance company, and a company's own maintenance department (see below). Patent Document 1).
しかしながら、従来行われている温度警報の発報方法、即ち、庫内温度が警報温度以上に上昇し、かつ、庫内温度が警報温度に上昇してから一定の遅延時間を経過した後に温度警報を発砲する方法では、温度警報を発報するタイミングが遅れ、冷凍・冷蔵ショーケースの商品陳列室内に陳列されている商品が温度上昇により傷んでしまう場合がある。 However, the conventional method of issuing a temperature alarm, that is, the temperature alarm is raised after a certain delay time has elapsed since the internal temperature rises above the alarm temperature and the internal temperature rises to the alarm temperature. In the method of firing, the timing of issuing the temperature alarm is delayed, and the products displayed in the product display room of the frozen / refrigerated showcase may be damaged by a rise in temperature.
さらに、従来行われている温度警報の発報方法では、商品陳列室内の温度が許容温度以上に上昇しても警報温度以下であると、その状態が長時間続いても温度警報が発報されないことになり、商品陳列室内に陳列されている商品が傷んでしまう。 Further, according to the conventional method of issuing a temperature alarm, if the temperature in the product display room rises above the allowable temperature but is below the alarm temperature, the temperature alarm is not issued even if the state continues for a long time. As a result, the products displayed in the product display room are damaged.
本発明は、このような課題を解決するためになされたものであり、その目的は、冷凍・冷蔵ショーケースの庫内温度の上昇の程度に応じて温度警報を発報するタイミングを調整し、温度警報の発報が遅れることや温度警報が発報されないことが原因となる商品の傷みを抑制することができる冷凍・冷蔵ショーケースの温度警報発報方法を提供することである。 The present invention has been made to solve such a problem, and its purpose is to adjust the timing of issuing a temperature alarm in accordance with the degree of rise in the temperature of the refrigerator / refrigerated showcase, It is an object of the present invention to provide a method for issuing a temperature alarm for a refrigerated / refrigerated showcase, which can suppress damage to a product due to a delay in issuing a temperature alarm or a failure to issue a temperature alarm.
本発明に係る冷凍・冷蔵ショーケースの温度警報発報方法は、冷凍・冷蔵ショーケースの庫内温度を測定する工程と、前記庫内温度が予め設定した警報温度以上に上昇したことを判定する工程と、前記庫内温度が前記警報温度以上に上昇してからの経過時間毎にその経過時間に対して前記警報温度と前記庫内温度との温度差に応じて予め設定した掛け率を掛けた修正経過時間を求める工程と、前記修正経過時間を積算して積算修正経過時間を求める工程と、前記積算修正経過時間が予め設定した警報発報積算時間に到達したことを判定する工程と、前記積算修正経過時間が前記警報発報積算時間に到達した場合に温度警報を発報する工程と、を有する。 A method for issuing a temperature warning of a frozen / refrigerated showcase according to the present invention includes the steps of measuring the temperature inside the refrigerator / freezer showcase and determining whether the temperature inside the refrigerator has risen above a preset alarm temperature. Multiplying the elapsed time by a multiplication factor set in advance according to a temperature difference between the alarm temperature and the internal temperature for each elapsed time after the internal temperature has risen to the alarm temperature or higher. Calculating the corrected elapsed time, obtaining the integrated corrected elapsed time by integrating the corrected elapsed time, and determining that the integrated corrected elapsed time has reached a preset alarm issuing integrated time, Issuing a temperature alarm when the integrated correction elapsed time reaches the alarm issuance integrated time.
また、前述の冷凍・冷蔵ショーケースの温度警報発報方法において、前記警報温度として、基準警報温度とこの基準警報温度より低い下限警報温度とを設定し、前記庫内温度が前記下限警報温度以上に上昇した場合と前記基準警報温度以上に上昇した場合とで前記掛け率の値を変え、前記庫内温度が前記下限警報温度以上に上昇した場合の前記掛け率の値より前記庫内温度が前記基準警報温度以上に上昇した場合の前記掛け率の値を大きくしていることが望ましい。 Further, in the above-mentioned method for issuing a temperature alarm of a frozen / refrigerated showcase, a reference alarm temperature and a lower limit alarm temperature lower than the reference alarm temperature are set as the alarm temperature, and the inside temperature is equal to or higher than the lower limit alarm temperature. The value of the multiplying factor is changed between when the temperature rises above the reference alarm temperature and when the internal temperature rises above the lower limit alarm temperature. It is desirable to increase the value of the multiplication factor when the temperature rises above the reference alarm temperature.
また、前述の冷凍・冷蔵ショーケースの温度警報発報方法において、前記警報温度として、基準警報温度とこの基準警報温度より低い下限警報温度とこの基準警報温度より高い上限警報温度とを設定し、前記庫内温度が前記基準警報温度である場合には、前記掛け率の値を“１”とし、前記庫内温度が前記下限警報温度以上であって前記基準警報温度未満の場合には、前記掛け率の値を“１”より小さい値で比例変化させ、前記庫内温度が前記基準警報温度より大きく前記上限警報温度以下である場合には、前記掛け率の値を“１”より大きい値で比例変化させることが望ましい。 Further, in the above-mentioned method for issuing a temperature alarm of a frozen / refrigerated showcase, as the alarm temperature, a reference alarm temperature, a lower alarm temperature lower than the reference alarm temperature, and an upper alarm temperature higher than the reference alarm temperature are set, When the internal temperature is the reference alarm temperature, the value of the multiplication factor is set to “1”, and when the internal temperature is equal to or higher than the lower alarm temperature and lower than the reference alarm temperature, If the value of the multiplying factor is proportionally changed by a value smaller than “1”, and the internal temperature is higher than the reference alarm temperature and equal to or lower than the upper limit alarm temperature, the value of the multiplying factor is set to a value larger than “1”. It is desirable to change proportionally.
本発明に係る冷凍・冷蔵ショーケースの温度警報発報方法によれば、庫内温度が警報温度以上に上昇した場合に、警報温度に上昇してからの経過時間毎にその経過時間に予め設定されている掛け率を掛けた修正経過時間を求め、修正経過時間を積算した積算修正経過時間が予め設定されている警報発報積算時間に到達した場合に温度警報が発報される。そして、掛け率は警報温度と庫内温度との温度差に応じた値に設定されている。このため、警報温度を低い温度に設定し、さらに、庫内温度が警報温度に近い場合には掛け率の値を小さくするとともに庫内温度が警報温度から離れて上昇するにつれて掛け率の値を大きくすることにより、庫内温度が上昇するにつれて修正経過時間が大きくなるとともに積算修正経過時間が急激に大きくなって警報発報積算時間に迅速に到達し、温度警報が迅速に発報されるので、庫内温度の上昇に伴う商品の傷みを抑制することができる。さらに、警報温度を低い温度に設定することにより、庫内温度が低い温度であってもその庫内温度が警報温度を超えている場合には積算修正経過時間が次第に増大するとともにやがて警報発報積算時間に到達して温度警報が発報されるので、庫内温度が従来では温度警報の発報対象とならない低い温度の場合でも温度警報を発報させることができ、庫内温度が低い温度に上昇してその状態が継続された場合であっても商品が傷むということを抑制することができる。 According to the method for issuing a temperature alarm for a freezer / refrigerated showcase according to the present invention, when the temperature in the refrigerator rises above the alarm temperature, the elapsed time is set in advance for each time elapsed since the rise to the alarm temperature. When the corrected elapsed time obtained by multiplying the corrected elapsed time by multiplying the multiplied multiplication rate reaches a preset alarm issuance integrated time, a temperature alarm is issued. The multiplying rate is set to a value corresponding to the temperature difference between the alarm temperature and the internal temperature. For this reason, the alarm temperature is set to a low temperature, and when the temperature in the refrigerator is close to the alarm temperature, the value of the multiplier is reduced, and the value of the multiplier is increased as the temperature in the refrigerator increases away from the alarm temperature. By increasing the temperature, the correction elapsed time increases as the internal temperature rises, and the integrated correction elapsed time increases rapidly, quickly reaching the alarm generation integration time, and the temperature alarm is quickly generated. In addition, it is possible to suppress damage to the product due to an increase in the internal temperature. Furthermore, by setting the alarm temperature to a low temperature, even if the temperature in the refrigerator is low, if the temperature in the refrigerator exceeds the alarm temperature, the cumulative correction elapsed time gradually increases, and the alarm is issued soon. Since the temperature alarm is issued when the accumulated time is reached, a temperature alarm can be issued even when the temperature in the refrigerator is low, which is not the target of the temperature warning in the past. Even if the state continues to rise, the product can be prevented from being damaged.
また、警報温度として、基準警報温度とこの基準警報温度より低い下限警報温度とを設定し、庫内温度が下限警報温度以上に上昇した場合と基準警報温度以上に上昇した場合とで掛け率の値を変え、庫内温度が下限警報温度以上に上昇した場合の掛け率の値より庫内温度が基準警報温度以上に上昇した場合の掛け率の値を大きくしている。このため、庫内温度が基準警報温度以上に上昇した場合には、積算修正経過時間が急激に大きくなって警報発報積算時間に迅速に到達するとともに温度警報が迅速に発報されるので、庫内温度の上昇に伴う商品の傷みを抑制することができる。さらに、庫内温度が下限警報温度以上には上昇したが基準警報温度以上には上昇しない場合でも、その状態が継続した場合には積算修正経過時間が次第に増大するとともにやがて警報発報積算時間に到達して温度警報が発報されるので、庫内温度が基準警報温度未満であって下限警報温度以上の低い温度に上昇してその状態が継続された場合であっても商品が傷むということを抑制することができる。 In addition, a reference alarm temperature and a lower limit alarm temperature lower than the reference alarm temperature are set as the alarm temperatures, and the multiplication rate is determined depending on whether the internal temperature rises above the lower limit alarm temperature or rises above the reference alarm temperature. The value is changed, and the value of the multiplying factor when the internal temperature rises above the reference alarm temperature is made larger than the value of the multiplying factor when the internal temperature rises above the lower alarm temperature. For this reason, when the internal temperature rises above the reference alarm temperature, the integration correction elapsed time sharply increases, and the alarm alarm integration time is quickly reached, and the temperature alarm is quickly issued. It is possible to suppress damage to the product due to an increase in the temperature in the refrigerator. Furthermore, even when the internal temperature rises above the lower limit alarm temperature but does not rise above the reference alarm temperature, if the state continues, the cumulative correction elapsed time gradually increases, and eventually the alarm alert cumulative time When the temperature is reached and a temperature alarm is issued, the product will be damaged even if the internal temperature is lower than the reference alarm temperature and rises to a lower temperature equal to or higher than the lower limit alarm temperature and the condition is continued Can be suppressed.
また、警報温度として、基準警報温度とこの基準警報温度より低い下限警報温度とこの基準警報温度より高い上限警報温度とを設定し、庫内温度が基準警報温度である場合には、掛け率の値を“１”とし、庫内温度が下限警報温度以上であって基準警報温度未満の場合には、掛け率の値を“１”より小さい値で比例変化させ、庫内温度が基準警報温度より大きく上限警報温度以下である場合には、掛け率の値を“１”より大きい値で比例変化させている。このため、庫内温度が基準警報温度以上に上昇した場合には、積算修正経過時間が急激に大きくなって警報発報積算時間に迅速に到達するとともに温度警報が迅速に発報されるので、庫内温度の上昇に伴う商品の傷みを抑制することができる。さらに、庫内温度が下限警報温度以上には上昇したが基準警報温度以上には上昇しない場合でも、その状態が継続した場合には積算修正経過時間が次第に増大するとともにやがて警報発報積算時間に到達して温度警報が発報されるので、庫内温度が基準警報温度未満であって下限警報温度以上の低い温度に上昇してその状態が継続された場合であっても商品が傷むということを抑制することができる。 Also, as the alarm temperature, a reference alarm temperature, a lower limit alarm temperature lower than the reference alarm temperature, and an upper limit alarm temperature higher than the reference alarm temperature are set. The value is set to “1”, and when the internal temperature is equal to or higher than the lower limit alarm temperature and lower than the reference alarm temperature, the value of the multiplication factor is proportionally changed to a value smaller than “1”, and the internal temperature is set to the reference alarm temperature. If the temperature is greater than or equal to or lower than the upper limit alarm temperature, the value of the multiplication factor is proportionally changed to a value larger than “1”. For this reason, when the internal temperature rises above the reference alarm temperature, the integration correction elapsed time sharply increases, and the alarm alarm integration time is quickly reached, and the temperature alarm is quickly issued. It is possible to suppress damage to the product due to an increase in the temperature in the refrigerator. Furthermore, even when the internal temperature rises above the lower limit alarm temperature but does not rise above the reference alarm temperature, if the state continues, the cumulative correction elapsed time gradually increases, and eventually the alarm alert cumulative time When the temperature is reached and a temperature alarm is issued, the product will be damaged even if the internal temperature is lower than the reference alarm temperature and rises to a lower temperature equal to or higher than the lower limit alarm temperature and the condition is continued Can be suppressed.
本発明の一実施形態について、図面に基づいて説明する。図１は、冷蔵ショーケース１の商品陳列室内の温度（庫内温度）の上昇時に温度警報を発報するシステムを示すブロック図であり、冷蔵ショーケース１には庫内温度を測定する温度センサ２が設けられ、この温度センサ２は制御装置３に接続されている。制御装置３は、冷蔵ショーケース１を管理する事務室等に設置されている。なお、冷蔵ショーケースには冷却器を含む冷凍装置が設けられ、この冷凍装置により冷蔵ショーケース１の庫内温度が調整されている。 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a system that issues a temperature alarm when the temperature (inside temperature) in the product display room of the refrigerated showcase 1 rises. 2 is provided, and the temperature sensor 2 is connected to the control device 3. The control device 3 is installed in an office or the like that manages the refrigerated showcase 1. The refrigerated showcase is provided with a refrigerating device including a cooler, and the temperature inside the refrigerating showcase 1 is adjusted by the refrigerating device.
制御装置３には、経過時間を測定するタイマ４と、各種のデータを記憶する記憶部５と、記憶部５に記憶されたデータと温度センサ２で測定した庫内温度とタイマ４で測定した時間とに基づいて各種の演算を行う演算部６と、演算部６での演算結果に応じて温度警報を発報する温度警報発報部７とが設けられている。
The control device 3 includes a
記憶部５に記憶されているデータとしては、予め設定した警報温度（下限警報温度、基準警報温度、上限警報温度）や、庫内温度が警報温度以上に上昇してからの経過時間毎にその経過時間から修正経過時間を求める場合に使用する掛け率等の固定データと、経過時間に掛け率を掛けることにより得られた修正経過時間を積算した積算修正経過時間である可変データ等がある。 The data stored in the storage unit 5 includes a preset alarm temperature (lower-limit alarm temperature, reference alarm temperature, and upper-limit alarm temperature) and the alarm temperature at each time elapsed since the internal temperature rose to or above the alarm temperature. There are fixed data such as a multiplication factor used when obtaining the corrected elapsed time from the elapsed time, and variable data that is an integrated corrected elapsed time obtained by integrating the corrected elapsed time obtained by multiplying the elapsed time by the multiplication factor.
ここで、下限警報温度を８℃、基準警報温度を１２℃、上限警報温度を１６℃に設定した場合における本発明の温度警報の発報と、基準警報温度を警報温度として庫内温度がその警報温度に上昇してから一定の遅延時間の経過後に温度警報を発報する従来例とについて、図２ないし図４に基づいて説明する。なお、図２は、庫内温度が下限警報温度、基準警報温度、上限警報温度と次第に上昇する場合について示しており、図３は、庫内温度が下限警報温度よりは上昇するが基準警報温度（従来例の警報温度）には上昇しない場合について示している。 Here, when the lower limit alarm temperature is set to 8 ° C., the reference alarm temperature is set to 12 ° C., and the upper limit alarm temperature is set to 16 ° C., the temperature alarm is issued according to the present invention. A conventional example in which a temperature alarm is issued after a certain delay time has elapsed after the temperature has risen to the alarm temperature will be described with reference to FIGS. FIG. 2 shows a case where the temperature in the refrigerator gradually increases to the lower limit alarm temperature, the reference alarm temperature, and the upper limit alarm temperature. FIG. 3 shows the case where the temperature in the refrigerator rises from the lower limit alarm temperature but the reference alarm temperature. (Alarm temperature of conventional example) does not rise.
また、図４は、警報温度（下限警報温度、基準警報温度、上限警報温度）と庫内温度との温度差に応じて設定した掛け率の変化について示している。この掛け率の値は、庫内温度が基準警報温度（１２℃）である場合には“１”、庫内温度が下限警報温度以上であって基準警報温度未満の場合には、１よれ小さい値で比例変化し、庫内温度が基準警報温度より大きく上限警報温度以下である場合には、“１”より大きい値で比例変化するように設定されている。 FIG. 4 shows a change in the multiplying ratio set according to the temperature difference between the alarm temperature (lower limit alarm temperature, reference alarm temperature, upper limit alarm temperature) and the inside temperature. The value of the multiplication factor is “1” when the inside temperature is the reference alarm temperature (12 ° C.), and is smaller than 1 when the inside temperature is equal to or higher than the lower limit alarm temperature and lower than the reference alarm temperature. When the internal temperature is higher than the reference alarm temperature and equal to or lower than the upper limit alarm temperature, it is set to change proportionally with a value larger than “1”.
このような構成において、冷蔵ショーケース１の庫内温度は温度センサ２により測定されており、測定結果は制御装置３の演算部６に入力されている。演算部６では、庫内温度が下限警報温度以上に上昇したか否かの判定が行われ、庫内温度が下限警報温度に上昇したと判定された場合には一定の経過時間毎（例えば、１分毎）にその経過時間に掛け率を掛けた修正経過時間が演算される。さらに、演算部６では、修正経過時間を積算することにより積算修正経過時間が求められ、積算修正経過時間が警報発報積算時間に到達したか否かが判定され、警報発報積算時間に到達した場合には、温度警報発報部７に対して温度警報を発報する信号を出力し、温度警報発報部７から温度警報が発報される。
In such a configuration, the internal temperature of the refrigerated showcase 1 is measured by the temperature sensor 2, and the measurement result is input to the
庫内温度が基準警報温度より低い場合には、修正経過時間を求めるための掛け率が“１”より小さいので、修正経過時間は実際の経過時間の値より小さくなり、その修正経過時間を積算した積算修正経過時間の上昇は緩やかになる。 If the internal temperature is lower than the reference alarm temperature, the multiplication factor for obtaining the corrected elapsed time is smaller than "1", so the corrected elapsed time is smaller than the actual elapsed time value, and the corrected elapsed time is integrated. The accumulated correction elapsed time rises slowly.
一方、庫内温度が基準警報温度より上昇した場合には、修正経過時間を求めるための掛け率が“１”より大きくなるとともに、その掛け率は庫内温度が上昇するにつれて次第に大きくなる。このため、庫内温度が上昇するにつれて修正経過時間を積算した積算修正経過時間は急激に大きくなり、警報発報積算時間に迅速に到達するとともに温度警報が迅速に発報される。このため、庫内温度が基準警報温度より上昇した場合には、従来例の温度警報の発報方法、即ち、庫内温度が警報温度に上昇してから一定の遅延時間が経過した後に温度警報を発報する方法に比べて、温度警報を発報する時間が“Ｔ”短くなる。これにより、庫内温度の上昇に伴う商品の傷みを抑制することができる。 On the other hand, when the inside temperature rises above the reference alarm temperature, the multiplication rate for obtaining the corrected elapsed time becomes larger than “1”, and the multiplication rate gradually increases as the inside temperature increases. For this reason, the cumulative correction elapsed time obtained by integrating the correction elapsed time as the internal temperature rises sharply increases, and the alarm warning cumulative time is quickly reached and a temperature warning is quickly issued. Therefore, when the internal temperature rises above the reference alarm temperature, the conventional method of issuing a temperature alarm, that is, the temperature alarm is issued after a certain delay time has elapsed since the internal temperature rose to the alarm temperature. As compared with the method of issuing the alarm, the time for issuing the temperature alarm is shortened by "T". Thereby, it is possible to suppress the damage of the product due to the rise in the internal temperature.
つぎに、図３に示したように、庫内温度が下限警報温度以上には上昇したが基準警報温度以上には上昇しない場合でも、その状態が継続することにより修正経過時間を積算した積算修正経過時間が求められ、この積算修正経過時間はやがて警報発報積算時間に到達して温度警報が発報される。このため、庫内温度が基準警報温度未満であって下限警報温度以上の低い温度に上昇してその状態が継続された場合に、温度警報が発報されずに商品が傷むということを抑制することができる。従来例の温度警報発報方法によれば、庫内温度が警報温度に到達しない場合には、温度警報が発報されない。 Next, as shown in FIG. 3, even when the temperature in the refrigerator rises above the lower limit alarm temperature but does not rise above the reference alarm temperature, the state is continued to correct the accumulated elapsed time. The elapsed time is obtained, and the accumulated correction elapsed time eventually reaches the alarm issuance integrated time, and the temperature alarm is issued. For this reason, when the temperature in the refrigerator is lower than the reference alarm temperature and rises to a lower temperature equal to or higher than the lower limit alarm temperature and the state is continued, it is possible to suppress the damage to the product without issuing a temperature alarm. be able to. According to the temperature warning issuance method of the related art, when the temperature in the refrigerator does not reach the warning temperature, no temperature warning is issued.
なお、本実施の形態では、温度警報発報方法を冷蔵ショーケースに適用した場合を例に挙げて説明したが、この温度警報発報方法を冷凍ショーケースに適用してもよい。 In the present embodiment, the case where the temperature warning issuance method is applied to a refrigerated showcase has been described as an example, but the temperature warning issuance method may be applied to a frozen showcase.
１ 冷蔵ショーケース
２ 温度センサ
３ 制御装置
４ タイマ
５ 記憶部
６ 演算部
７ 温度警報発報部
DESCRIPTION OF SYMBOLS 1 Refrigeration showcase 2 Temperature sensor 3
Claims (3)
前記庫内温度が予め設定した警報温度以上に上昇したことを判定する工程と、
前記庫内温度が前記警報温度以上に上昇してからの経過時間毎にその経過時間に対して前記警報温度と前記庫内温度との温度差に応じて予め設定した掛け率を掛けた修正経過時間を求める工程と、
前記修正経過時間を積算して積算修正経過時間を求める工程と、
前記積算修正経過時間が予め設定した警報発報積算時間に到達したことを判定する工程と、
前記積算修正経過時間が前記警報発報積算時間に到達した場合に温度警報を発報する工程と、
を有することを特徴とする冷凍・冷蔵ショーケースの温度警報発報方法。 Measuring the temperature inside the refrigerator / refrigerated showcase;
A step of determining that the internal temperature has risen to or above a preset alarm temperature,
Correction process of multiplying the elapsed time by a preset multiplication factor according to a temperature difference between the alarm temperature and the internal temperature for each elapsed time after the internal temperature has risen to the alarm temperature or higher. The process of finding time,
A step of integrating the corrected elapsed time to obtain an integrated corrected elapsed time,
A step of determining that the integration correction elapsed time has reached a preset alarm generation integration time,
Issuing a temperature alarm when the integrated correction elapsed time reaches the alarm notification integrated time,
A method for issuing a temperature alarm for a frozen / refrigerated showcase, comprising:
前記庫内温度が前記下限警報温度以上に上昇した場合と前記基準警報温度以上に上昇した場合とで前記掛け率の値を変え、前記庫内温度が前記下限警報温度以上に上昇した場合の前記掛け率の値より前記庫内温度が前記基準警報温度以上に上昇した場合の前記掛け率の値を大きくしていることを特徴とする請求項１記載の冷凍・冷蔵ショーケースの温度警報発報方法。 As the alarm temperature, a reference alarm temperature and a lower limit alarm temperature lower than the reference alarm temperature are set,
The value of the multiplying factor is changed between the case where the inside temperature rises above the lower limit alarm temperature and the case where the inside temperature rises above the reference alarm temperature, and the case where the inside temperature rises above the lower limit alarm temperature. 2. The freezing / refrigeration showcase temperature alarm issuance according to claim 1, wherein the value of the multiplying factor when the temperature in the refrigerator rises above the reference alarm temperature from the value of the multiplying factor is increased. Method.
前記庫内温度が前記基準警報温度である場合には、前記掛け率の値を“１”とし、
前記庫内温度が前記下限警報温度以上であって前記基準警報温度未満の場合には、前記掛け率の値を“１”より小さい値で比例変化させ、
前記庫内温度が前記基準警報温度より大きく前記上限警報温度以下である場合には、前記掛け率の値を“１”より大きい値で比例変化させることを特徴とする請求項１記載の冷凍・冷蔵ショーケースの温度警報発報方法。
As the alarm temperature, a reference alarm temperature, a lower alarm temperature lower than the reference alarm temperature and an upper alarm temperature higher than the reference alarm temperature are set,
When the internal temperature is the reference alarm temperature, the value of the multiplication factor is set to “1”,
When the internal temperature is equal to or higher than the lower limit alarm temperature and lower than the reference alarm temperature, the value of the multiplying ratio is proportionally changed to a value smaller than “1”,
2. The refrigeration system according to claim 1, wherein when the internal temperature is higher than the reference alarm temperature and equal to or lower than the upper limit alarm temperature, the value of the multiplication factor is proportionally changed to a value larger than "1". Refrigerated showcase temperature warning method.
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