JPH0229578A - Regeneration type refrigerator and arithmetic and display methods for residual cold insulation feasible time of regeneration type coolant used - Google Patents
Regeneration type refrigerator and arithmetic and display methods for residual cold insulation feasible time of regeneration type coolant usedInfo
- Publication number
- JPH0229578A JPH0229578A JP17817788A JP17817788A JPH0229578A JP H0229578 A JPH0229578 A JP H0229578A JP 17817788 A JP17817788 A JP 17817788A JP 17817788 A JP17817788 A JP 17817788A JP H0229578 A JPH0229578 A JP H0229578A
- Authority
- JP
- Japan
- Prior art keywords
- cold storage
- time
- storage material
- heat
- refrigerator
- 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
- 238000009413 insulation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 10
- 230000008929 regeneration Effects 0.000 title abstract 6
- 238000011069 regeneration method Methods 0.000 title abstract 6
- 239000002826 coolant Substances 0.000 title abstract 4
- 239000011232 storage material Substances 0.000 claims description 49
- 238000010521 absorption reaction Methods 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract 6
- 238000004364 calculation method Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野コ 本発明は蓄冷材を備えた保冷庫に関する。[Detailed description of the invention] [Industrial application fields] The present invention relates to a cold storage box equipped with a cold storage material.
［従来の技術］′
従来、保冷庫に備えられた保冷運転開始後の蓄冷材の残
存保冷可能時間を、客観的に把握するということは行わ
れてはおらず、人的経験により、主観的に把握するに止
まっていた。このため、標準条件で想定された蓄冷材の
標準保冷可能時間から保冷運転開始経過時間を勘案して
、保冷庫の配送時間等の管理が行われていた。[Conventional technology]' Conventionally, the remaining cold storage time of the cold storage material provided in a cold storage warehouse after the start of cold storage operation has not been objectively grasped, and it has been subjectively determined based on human experience. I had stopped short of grasping it. For this reason, the delivery time and the like of the cold storage warehouse have been managed by taking into consideration the elapsed time from the start of cold storage operation from the standard cold storage time of the cold storage material assumed under standard conditions.
［発明が解決しようとする課題］
しかしながら、蓄冷材の保冷能力には限界があり、外気
温度の変動により、その保冷可能時間が変動してしまう
ため、標準保冷可能時間に基づく保冷庫の管理では、蓄
冷材の現実の残存保冷可能時間を客観的に把握すること
ができず、標準保冷可能時間に基づいた画一的な管理し
か行なえないという問題があった。このため、場合によ
っては、蓄冷材の温度が上昇して、冷凍製品等の品質を
損なってしまう問題もある。[Problem to be solved by the invention] However, there is a limit to the cold storage capacity of cold storage materials, and the possible cold storage time fluctuates due to fluctuations in outside temperature. However, there was a problem in that it was not possible to objectively grasp the actual remaining cold storage time of the cold storage material, and only uniform management could be performed based on the standard cold storage time. Therefore, in some cases, the temperature of the cold storage material may rise, causing a problem in which the quality of frozen products and the like is impaired.
そこで、本発明の技術的課題は、上記欠点に鑑み、蓄冷
材の残存保冷可能時間を客観的に正確に把握し、弾力的
な保冷庫の管理を行うことが可能な蓄冷式保冷庫及びそ
れに使用される蓄冷材の保冷可能時間の演算及び表示方
法を提供するものである。SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the technical problem of the present invention is to provide a cold storage type cold storage warehouse that can objectively and accurately grasp the remaining cold storage time of cold storage materials and to perform flexible cold storage management. The present invention provides a method for calculating and displaying the cold storage time of the cold storage material used.
［課題を解決するための手段］
本発明によれば、予め定められた初期吸熱量Ｑｏ（ｋｃ
ａｌ）を持つ蓄冷材を利用して、予め定められた断熱性
ｋ Ｋ−Ａ （ｋ ｃ ａ Ｉ ／ ｈ ℃）を有する
冷却庫の庫内の冷却を行う蓄冷式保冷庫において、前記
蓄冷式保冷庫の外部の空気温度Ｔｅ（Ｃ）を検出するた
めの外気温度センサと、前記蓄冷式保冷庫の内部の空気
温度Ｔｉ（℃）を検出するための庫内温度センサと、前
記外気及び庫内温度センサの検出値を所定時間間隔τ（
ｈ）毎に読込み、これ等の温度差ΔＴ （℃）を求め、
前記断熱性能Ｋ・Ａに該温度差ΔＴを掛けることにより
、前記蓄冷材の単位時間当りの消費熱量ｑ（ｋｃ ａ
１ ／ ｈ ）を求め、この単位時間当りの消費熱量ｑ
を前記蓄冷材を前記冷却庫に設置した時からの経過時間
ｎ・τで積分する（ｑ（τ）・τ＋ｑ（２・τ）・τ−
←；・・＋ｑ（ｎ・τ）・τ）ことにより、前記蓄冷材
の現時点での消費熱１Ｑ（ｎ・τ）を求め、前記消費熱
ｉＱを前記初期吸熱ｆｉＬＱＯから引くことにより、前
記蓄冷材の残りの吸熱量Ｑｒ （ｋｃａｌ）を求め、該
残りの吸熱量Ｑｒを前記単位時間当りの消費熱量ｑで割
ることにより、前記蓄冷材の残存保冷可能時間ｔｅ （
ｈ）を求める演算手段と、前記残存保冷可能時間ｔｅを
表示する表示手段と
を有することを特徴とする蓄冷式冷却庫が得られる。[Means for Solving the Problems] According to the present invention, a predetermined initial amount of heat absorption Qo (kc
In a cold storage type cold storage warehouse that uses a cold storage material having an outside air temperature sensor for detecting the air temperature Te (C) outside the cold storage; an inside temperature sensor for detecting the air temperature Ti (°C) inside the cold storage type cold storage; The detected value of the internal temperature sensor is measured at a predetermined time interval τ(
h) and calculate the temperature difference ΔT (℃) between them.
By multiplying the thermal insulation performance K・A by the temperature difference ΔT, the amount of heat consumed per unit time of the cold storage material q(kc a
1/h) and calculate the amount of heat consumed per unit time q
is integrated over the elapsed time n・τ since the cold storage material was installed in the cooling warehouse (q(τ)・τ+q(2・τ)・τ−
←;...+q(n・τ)・τ), the current heat consumption 1Q(n・τ) of the cold storage material is obtained, and the heat consumption iQ is subtracted from the initial heat absorption fiLQO. By calculating the remaining heat absorption Qr (kcal) of the material and dividing the remaining heat absorption Qr by the heat consumption q per unit time, the remaining cold storage time te (
h), and a display means for displaying the remaining cold storage time te.
さらに、本発明によれば、予め定められた初期吸熱量Ｑ
ｏ（ｋｃａｌ）を持つ蓄冷材を利用して、予め定められ
た断熱性能Ｋ −Ａ （ｋｃ ａ ｌ／ｈ’ｃ）を有す
る冷却庫の庫内の冷却を行う場合に、前記蓄冷材を前記
冷却庫に設置した後の前記蓄冷材のの使用可能時間を演
算し表示する方法において、所定時間間隔τ（ｈ）毎に
、前記冷却庫の外部の空気温度’Ｔ’ｅ（℃）と前記冷
却庫の内部の空気温度’Ｉ’ｉ（℃）とを読込み、前記
冷却庫の外部の空気温度Ｔｅと前記冷却庫の内部の空気
温度Ｔｉの温度差ΔＴ＝Ｔｅ −Ｔ ｉ （℃）を求め
、前記断熱性能Ｋ・Ａに該温度差ΔＴを掛けることによ
り、前記蓄冷材の単位時間当りの消費熱量ｑ＝Ｋ −Ａ
・ΔＴを（ｋ ｃ ａ ｌ ／ ｈ ）を求め、該単位
時間当りの消費熱量ｑを前記蓄冷材を前記冷却庫に設置
した時からの経過時間ｎ・τで積分する（ｑ（τ）・τ
＋ｑ（２・τ）・τ＋・・・＋ｑ（ｎ・τ）・τ）こと
により、前記蓄冷材の現時点での消費熱量Ｑｃ（ｎ・τ
）を求め、前記消費熱量Ｑｃを前記初期吸熱量ＱＯから
引くことにより、前記蓄冷材の残りの吸熱量Ｑｒ＝Ｑｏ
Ｑｃ（ｋｃａｌ）を求め、該残りの吸熱量Ｑｒを前
記単位時間当りの消費熱量ｑで割ることにより、前記蓄
冷材の残存保冷可能時間ｔｅ＝Ｑｒ−？ｑ（ｈ）を求め
、前記残存保冷可能時間ｔｅを表示するステップを有す
ることを特徴とする冷却庫に使用される蓄冷材の保冷可
能時間の演算及び表示方法が得られる。Furthermore, according to the present invention, the predetermined initial heat absorption amount Q
o (kcal) to cool the inside of a refrigerator having a predetermined insulation performance K - A (kcal/h'c), the cold storage material is In a method of calculating and displaying the usable time of the cold storage material after it is installed in a cooling storage, the air temperature 'T'e (°C) outside the cooling storage and the Read the air temperature 'I'i (°C) inside the cooling store, and calculate the temperature difference ΔT=Te −T i (°C) between the air temperature Te outside the cooling store and the air temperature Ti inside the cooling store. By multiplying the heat insulation performance K・A by the temperature difference ΔT, the amount of heat consumed per unit time of the cold storage material q=K −A
・Determine ΔT (k a l / h), and integrate the amount of heat consumed per unit time q by the elapsed time n・τ from the time when the cold storage material was installed in the cooling chamber (q(τ)・τ
+q(2・τ)・τ+...+q(n・τ)・τ), the current heat consumption Qc(n・τ
), and by subtracting the consumed heat amount Qc from the initial heat absorption amount QO, the remaining heat absorption amount of the cold storage material Qr=Qo
By calculating Qc (kcal) and dividing the remaining heat absorption Qr by the heat consumption q per unit time, the remaining cold storage time of the cold storage material te=Qr-? There is obtained a method for calculating and displaying the available cold storage time of a cold storage material used in a refrigerator, which is characterized by the steps of calculating q(h) and displaying the remaining available cold storage time te.
［実施例］ 次に、本発明の実施例を図面を参照して説明する。[Example] Next, embodiments of the present invention will be described with reference to the drawings.
第１図に示すように、１は保冷庫（図示しない）の外気
温度Ｔｅを検出する外気温度センサ、２は保冷庫内の空
気温度Ｔｉを検出する庫内温度センサであり、保冷庫内
に内蔵されたマイクロコンピュータ３は、これら外気温
度センサ１及び庫内温度サンプ２からの検出信号を受け
、これに基づいて蓄冷材の残存保冷可能時間Ｑｒを演算
し、液晶表示器４に、その残存保冷可能時間Ｑｒを表示
する。As shown in FIG. 1, 1 is an outside temperature sensor that detects the outside air temperature Te of a cold storage (not shown), and 2 is an internal temperature sensor that detects the air temperature Ti inside the cold storage. The built-in microcomputer 3 receives the detection signals from the outside air temperature sensor 1 and the inside temperature sump 2, calculates the remaining cold storage time Qr of the cold storage material based on this, and displays the remaining cold storage time Qr on the liquid crystal display 4. Displays the possible cold storage time Qr.
いま、蓄冷材の数人ストレスとなる庫内空気温度−２０
℃を、冷凍モードに想定し、その保冷時間を１６時間と
して、蓄冷材の重量が選定される。Currently, the air temperature inside the refrigerator is -20, which is causing stress for several people working with cold storage materials.
The weight of the cold storage material is selected assuming that the temperature is in freezing mode and the cold storage time is 16 hours.
また、外気温度条件を３５℃とする。In addition, the outside temperature condition is 35°C.
これより、蓄冷材は保冷庫の内蔵している冷却ユニット
（図示せず）の冷却運転の始動により、冷却、完了（凍
結温度以下）まで冷却される。このときの蓄冷材の初期
吸熱量Ｑｏを下記の第１式に示す。From this, the cold storage material is cooled down to completion (below the freezing temperature) by starting the cooling operation of the cooling unit (not shown) built in the cold storage. The initial heat absorption amount Qo of the cold storage material at this time is shown in the following first equation.
Ｑｏ＝ＭＬ＋５ＭＣ（ｋｃａｌｌ −−・■ここで、
Ｍ：蓄冷材の重量、Ｌ：蓄冷材の融解潜熱（ｋｃｘｌ／
ｋｇ） 、 Ｃ：蓄冷材の比熱（ｋｃａｌ／ｋｇ℃）で
ある。Qo=ML+5MC(kcall --・■Here,
M: Weight of cold storage material, L: Latent heat of fusion of cold storage material (kcxl/
kg), C: Specific heat of the cold storage material (kcal/kg°C).
次に、保冷運転が開始されると、保冷庫内への外気から
の侵入熱量が、単位時間当りの消費熱量ｑとして１時々
刻々と蓄冷材の初期吸熱量ＱＯを消費する。この単位時
間当りの消費熱量ｑは下記の第２式で表される。Next, when the cold storage operation is started, the amount of heat that enters the cold storage from the outside air consumes the initial heat absorption amount QO of the cold storage material every moment as the amount of heat consumed per unit time q. The amount of heat consumed per unit time q is expressed by the second equation below.
ｑ＝Ｋ −Ａ・ΔＴ ・・・■
ここで、Ｋ：（Ｘ冷凍の熱伝導率（ｋｃａｌ／ｒｒｒｂ
℃）Ａ：保冷庫の表面積（ｄ）、へＴ：外気温度Ｔｅと
庫内温度Ｔｉの差（℃）、なお、Ｋ−Ａは保冷庫の断熱
性能と呼ばれ、保冷庫の形状により定まる定数であり、
現仕様においては、 Ｋ−Ａ＝３（ｋｃａｌ ／ｈ℃ｌ
とする。q=K −A・ΔT ...■ Here, K: (X Thermal conductivity of refrigeration (kcal/rrrb
℃) A: Surface area of the cold storage (d), T: Difference between the outside temperature Te and the internal temperature Ti (℃), K-A is called the insulation performance of the cold storage and is determined by the shape of the cold storage. is a constant,
In the current specifications, K-A=3 (kcal/h℃l
shall be.
よって、単位時間当りの消費熱量ｑを保冷運転経過時間
で積分した消費熱量Ｑを、初期吸熱量ＱＯから引いた残
りの熱量が、残存吸熱量Ｑｒとなる。そして、この残存
吸熱量Ｑｒを現時点の単位時間当りの消費熱量ｑで割る
ことにより、蓄冷材の残存保冷可能゛時間ｔｅが得られ
る。Therefore, the remaining heat amount Qr is obtained by subtracting the consumed heat amount Q, which is obtained by integrating the heat consumption amount q per unit time over the elapsed cold storage operation time, from the initial heat absorption amount QO. Then, by dividing this remaining heat absorption amount Qr by the current amount of heat consumption q per unit time, the remaining cold storage time te of the cold storage material can be obtained.
なお、−日の外気温度の変化を、気象データ等から判断
して、その将来の消費熱量を仮想した値で残存吸熱量Ｑ
ｒを割ることも可能である。In addition, the residual heat absorption Q is determined by determining the change in the outside air temperature on - day from weather data, etc., and using the hypothetical value of the future heat consumption.
It is also possible to divide r.
次に、マイクロコンピュータ３の演算手順を、第２図を
参照して説明する。Next, the calculation procedure of the microcomputer 3 will be explained with reference to FIG.
まず、蓄冷材の初期吸熱量Ｑ ｏ （ｋｃａｌｌと、保
冷庫１の断熱性能Ｋ・Ａとが、上述したように設定され
、保冷運転が開始される（ ５ｔｅｐ１００）。なお、
保冷運転初期時間においては、消費熱量Ｑは０である。First, the initial heat absorption amount Q o (kcall) of the cold storage material and the insulation performance K/A of the cold storage 1 are set as described above, and the cold storage operation is started (5tep100).
During the initial period of cold storage operation, the amount of heat consumed Q is 0.
保′冷開始後、所定時間での経過を監視する（ｓｔ８Ｄ
１０１）、所定時間τの経過後、外気温度Ｔｅ及び庫内
温度Ｔｉを、外気温度センサ１及び庫内温度サンサ２か
ら読込む（５ｔｅｐ１０２）、次に、外気温度Ｔｅと庫
内温度Ｔｉとの温度差ΔＴを求める（ｓｔｅｐ１０３）
、求めた温度差ΔＴに断熱性能１く・Ａを掛けて、単位
時間当りの蓄冷材の消費熱量ｑを求める（ ｓｔｅ＋１
１０４）。この単位時間当りの消費熱Ｊｉｑを、保冷運
転開始時からの経過時間ｎ・τで積分（ｑ（τ）・τ＋
ｑ（２・τ）・τ＋・・・＋ｑ（ｎ・τ）・τ）、又は
、累積して、現時点での消費熱量Ｑ（ｎ・τ）を求める
（ ５ｔｅｐ１０５）。そして、消費熱量Ｑを初期吸熱
量Ｑｏから引くことにより、蓄冷材の残存保冷可能時間
Ｑｒを求める（ ５ｔｅＤ１０６）。After the start of cooling, monitor the progress at a predetermined time (st8D)
101), After the elapse of a predetermined time τ, the outside air temperature Te and the inside temperature Ti are read from the outside air temperature sensor 1 and the inside temperature sensor 2 (5tep102). Next, the outside air temperature Te and the inside temperature Ti are read. Find the temperature difference ΔT (step 103)
, Multiply the obtained temperature difference ΔT by the insulation performance 1 × A to find the amount of heat consumed by the cold storage material q per unit time (ste+1
104). This heat consumption Jiq per unit time is integrated by the elapsed time n・τ from the start of cold storage operation (q(τ)・τ+
q(2·τ)·τ+...+q(n·τ)·τ) or cumulatively to obtain the current amount of heat consumption Q(n·τ) (5tep105). Then, by subtracting the consumed heat amount Q from the initial heat absorption amount Qo, the remaining cold storage time Qr of the cold storage material is determined (5teD106).
残存保冷可能時間Ｑｒを現時点での単位時間当りの蓄冷
材の消費熱量ｑで割ることにより求める（ ５ｔｅｐ１
０７）、最後に、残存保冷可能時間Ｑｒを数値を以て、
液晶表示する（ ５ｔｅｐ１０８）。Calculate by dividing the remaining cold storage time Qr by the current heat consumption q of the cold storage material per unit time (5 step 1
07), Finally, calculate the remaining cold storage time Qr with a numerical value,
Display on LCD (5 step 108).
なお、以下に揚げる要素をも考慮した残存保冷可能時間
Ｑｒの演算を行うことは、：４２発明の目的に合致する
ことは明白である。Note that it is clear that calculating the remaining cold preservation time Qr taking into account the following factors also meets the purpose of the invention:42.
■蓄冷運転の冷却状態に伴う初期吸熱量ＱＯの変動。■Changes in the initial heat absorption QO due to the cooling state of cold storage operation.
■保冷運転中の保冷庫のドアの開閉め又は、外気温度の
急変に伴う消費熱量の変動。■Changes in heat consumption due to opening and closing of the refrigerator door during cold storage operation or sudden changes in outside temperature.
■負荷（収納荷物）の収納量の変化に伴う消費熱量の変
動。■Changes in heat consumption due to changes in the amount of stored load (storage baggage).
［発明の効果］
以上の説明から分るように、本発明によれば、外気から
保冷庫内へ侵入する熱量を消費熱量として、リアルタイ
ムで客観的に把握して、正確な蓄冷材の残存保冷可能時
間を得ることができるから、弾力的な保冷庫の管理を行
うことが可能となる。[Effects of the Invention] As can be seen from the above description, according to the present invention, the amount of heat that enters the cold storage from the outside air is objectively grasped in real time as the amount of consumed heat, and the remaining cold of the cold storage material is accurately stored. Since the available time can be obtained, it becomes possible to manage the cold storage flexibly.
第１図は本発明の実施例に係わるブロック図、第２図は
第１図に示すマイクロコンピュータの演算手順を示すフ
ローチャートである。
１・・・外気温度センサ、２・・・庫内温度センサ、３
・・・マイクロコンピュータ、４・・・表示器。
第２図
第１図
手続補正帯（的）
平成１年２月１８日FIG. 1 is a block diagram relating to an embodiment of the present invention, and FIG. 2 is a flowchart showing the calculation procedure of the microcomputer shown in FIG. 1...Outside temperature sensor, 2...Inside temperature sensor, 3
... Microcomputer, 4... Display unit. Figure 2 Figure 1 Procedure Amendment Band (Target) February 18, 1999
Claims (1)
蓄冷材を利用して、予め定められた断熱性能Ｋ・Ａ（ｋ
ｃａｌ／ｈ℃）を有する冷却庫の庫内の冷却を行う蓄冷
式保冷庫において、 前記蓄冷式保冷庫の外部の空気温度Ｔｅ（℃）を検出す
るための外気温度センサと、 前記蓄冷式保冷庫の内部の空気温度Ｔｉ（℃）を検出す
るための庫内温度センサと、 前記外気及び庫内温度センサの検出値を所定時間間隔τ
（ｈ）毎に読込み、これ等の温度差ΔＴ（℃）を求め、
前記断熱性能Ｋ・Ａに該温度差ΔＴを掛けることにより
、前記蓄冷材の単位時間当りの消費熱量ｑ（ｋｃａｌ／
ｈ）を求め、この単位時間当りの消費熱量ｑを前記蓄冷
材を前記冷却庫に設置した時からの経過時間ｎ・τで積
分する（ｑ（τ）・τ＋ｑ（２・τ）・τ＋・・・＋ｑ
（ｎ・τ）・τ）ことにより、前記蓄冷材の現時点での
消費熱量Ｑ（ｎ・τ）を求め、前記消費熱量Ｑを前記初
期吸熱量Ｑｏから引くことにより、前記蓄冷材の残りの
吸熱量Ｑｒ（ｋｃａｌ）を求め、該残りの吸熱量Ｑｒを
前記単位時間当りの消費熱量ｑで割ることにより、前記
蓄冷材の残存保冷可能時間ｔｅ（ｈ）を求める演算手段
と、 前記残存保冷可能時間ｔｅを表示する表示手段と を有することを特徴とする蓄冷式冷却庫。 ２、予め定められた初期吸熱量Ｑｏ（ｋｃａｌ）を持つ
蓄冷材を利用して、予め定められた断熱性能Ｋ・Ａ（ｋ
ｃａｌ／ｈ℃）を有する冷却庫の庫内の冷却を行う場合
に、前記蓄冷材を前記冷却庫に設置した後の前記蓄冷材
のの使用可能時間を演算し表示する方法において、 所定時間間隔τ（ｈ）毎に、前記冷却庫の外部の空気温
度Ｔｅ（℃）と前記冷却庫の内部の空気温度Ｔｉ（℃）
とを読込み、 前記冷却庫の外部の空気温度Ｔｅと前記冷却庫の内部の
空気温度Ｔｉの温度差ΔＴ＝Ｔｅ−Ｔｉ（℃）を求め、 前記断熱性能Ｋ・Ａに該温度差ΔＴを掛けることにより
、前記蓄冷材の単位時間当りの消費熱量ｑ＝Ｋ・Ａ・Δ
Ｔを（ｋｃａｌ／ｈ）を求め、該単位時間当りの消費熱
量ｑを前記蓄冷材を前記冷却庫に設置した時からの経過
時間ｎ・τで積分する（ｑ（τ）・τ＋ｑ（２・τ）・
τ＋・・・＋ｑ（ｎ・τ）・τ）ことにより、前記蓄冷
材の現時点での消費熱量Ｑｃ（ｎ・τ）を求め、 前記消費熱量Ｑｃを前記初期吸熱量Ｑｏから引くことに
より、前記蓄冷材の残りの吸熱量Ｑｒ＝Ｑｏ−Ｑｃ（ｋ
ｃａｌ）を求め、 該残りの吸熱量Ｑｒを前記単位時間当りの消費熱量ｑで
割ることにより、前記蓄冷材の残存保冷可能時間ｔｅ＝
Ｑｒ÷ｑ（ｈ）を求め、 前記残存保冷可能時間ｔｅを表示する ステップを有することを特徴とする冷却庫に使用される
蓄冷材の保冷可能時間の演算及び表示方法。[Claims] 1. Using a cold storage material with a predetermined initial heat absorption amount Qo (kcal), a predetermined heat insulation performance K・A (kcal) is obtained.
cal/h°C), which cools the inside of the refrigerator, comprising: an outside air temperature sensor for detecting an air temperature Te (°C) outside the cold storage type; An internal temperature sensor for detecting the air temperature Ti (°C) inside the storage; and the detection values of the outside air and internal temperature sensors are measured at predetermined time intervals τ.
(h), calculate the temperature difference ΔT (℃),
By multiplying the heat insulation performance K・A by the temperature difference ΔT, the amount of heat consumed per unit time of the cold storage material q (kcal/
h) and integrate the amount of heat consumed per unit time q by the elapsed time n・τ since the cold storage material was installed in the cooling warehouse (q(τ)・τ+q(2・τ)・τ+・・・・＋q
(n・τ)・τ), the current heat consumption Q(n・τ) of the cold storage material is determined, and by subtracting the heat consumption Q from the initial heat absorption Qo, the remaining heat absorption amount of the cold storage material is calculated. Calculating means for calculating the remaining cold storage time te (h) of the cold storage material by calculating the amount of heat absorption Qr (kcal) and dividing the remaining amount of heat absorption Qr by the amount of heat consumed per unit time q; A cold storage type refrigerator characterized by having a display means for displaying a possible time te. 2. Using a cold storage material with a predetermined initial heat absorption amount Qo (kcal), a predetermined insulation performance K・A (kcal) is obtained.
In a method for calculating and displaying the usable time of the cold storage material after the cold storage material is installed in the cooling storage, when cooling the inside of a cooling storage having a temperature of 100 yen (cal/h°C), the method comprises: For every τ (h), the air temperature Te (°C) outside the refrigerator and the air temperature Ti (°C) inside the refrigerator
and calculate the temperature difference ΔT=Te−Ti (°C) between the air temperature Te outside the cooling store and the air temperature Ti inside the cooling store, and multiply the insulation performance K・A by the temperature difference ΔT. By this, the amount of heat consumed per unit time of the cold storage material q=K・A・Δ
Calculate T (kcal/h), and integrate the amount of heat consumed per unit time q by the elapsed time n·τ since the cold storage material was installed in the refrigerator (q(τ)·τ+q(2· τ)・
τ+...+q(n・τ)・τ) to find the current heat consumption Qc(n・τ) of the cold storage material, and by subtracting the heat consumption Qc from the initial heat absorption Qo, Remaining heat absorption amount of the cold storage material Qr=Qo−Qc(k
Cal), and by dividing the remaining heat absorption Qr by the heat consumption q per unit time, the remaining cold storage time te of the cold storage material is calculated.
A method for calculating and displaying a possible cold storage time of a cold storage material used in a refrigerator, comprising the steps of calculating Qr÷q(h) and displaying the remaining cold storage time te.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17817788A JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17817788A JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0229578A true JPH0229578A (en) | 1990-01-31 |
| JPH067033B2 JPH067033B2 (en) | 1994-01-26 |
Family
ID=16043954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17817788A Expired - Lifetime JPH067033B2 (en) | 1988-07-19 | 1988-07-19 | Cold storage type cold storage and method for calculating and displaying remaining cold storage time of the cold storage material used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067033B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101241A (en) * | 1989-11-20 | 1992-03-31 | Kabushiki Kaisha Toshiba | Telescopic paper guide means movable to selected receiving trays |
| US6820436B2 (en) | 2002-04-19 | 2004-11-23 | Denso Corporation | Vehicle air-conditioning system with cold storage unit |
| JP2007303759A (en) * | 2006-05-12 | 2007-11-22 | Toyo Netsu Kogyo Kk | Operation control method of ice thermal storage system |
| JP2017040466A (en) * | 2015-08-21 | 2017-02-23 | 大日本印刷株式会社 | Accommodation unit, temperature management system, and program |
| JP2017172913A (en) * | 2016-03-25 | 2017-09-28 | パナソニックＩｐマネジメント株式会社 | Cold storage management system and cold storage management device |
| CN109751800A (en) * | 2017-11-07 | 2019-05-14 | 松下知识产权经营株式会社 | Cold insulated cabinet and cold insulated cabinet management system |
| JP2020060311A (en) * | 2018-10-09 | 2020-04-16 | パナソニックＩｐマネジメント株式会社 | Cold storage device |
| CN112651679A (en) * | 2019-10-10 | 2021-04-13 | 中车石家庄车辆有限公司 | Cold chain transportation route planning method and device and computer equipment |
-
1988
- 1988-07-19 JP JP17817788A patent/JPH067033B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5101241A (en) * | 1989-11-20 | 1992-03-31 | Kabushiki Kaisha Toshiba | Telescopic paper guide means movable to selected receiving trays |
| US6820436B2 (en) | 2002-04-19 | 2004-11-23 | Denso Corporation | Vehicle air-conditioning system with cold storage unit |
| DE10317521B4 (en) * | 2002-04-19 | 2016-11-10 | Denso Corporation | Vehicle climate system with cold storage unit |
| JP2007303759A (en) * | 2006-05-12 | 2007-11-22 | Toyo Netsu Kogyo Kk | Operation control method of ice thermal storage system |
| JP2017040466A (en) * | 2015-08-21 | 2017-02-23 | 大日本印刷株式会社 | Accommodation unit, temperature management system, and program |
| JP2017172913A (en) * | 2016-03-25 | 2017-09-28 | パナソニックＩｐマネジメント株式会社 | Cold storage management system and cold storage management device |
| CN109751800A (en) * | 2017-11-07 | 2019-05-14 | 松下知识产权经营株式会社 | Cold insulated cabinet and cold insulated cabinet management system |
| JP2020060311A (en) * | 2018-10-09 | 2020-04-16 | パナソニックＩｐマネジメント株式会社 | Cold storage device |
| CN112651679A (en) * | 2019-10-10 | 2021-04-13 | 中车石家庄车辆有限公司 | Cold chain transportation route planning method and device and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH067033B2 (en) | 1994-01-26 |
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