JPS6051917A - Thermostatic storehouse - Google Patents
Thermostatic storehouseInfo
- Publication number
- JPS6051917A JPS6051917A JP16086783A JP16086783A JPS6051917A JP S6051917 A JPS6051917 A JP S6051917A JP 16086783 A JP16086783 A JP 16086783A JP 16086783 A JP16086783 A JP 16086783A JP S6051917 A JPS6051917 A JP S6051917A
- Authority
- JP
- Japan
- Prior art keywords
- door
- heater
- storage chamber
- temperature
- unit time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
- G05D23/2451—Details of the regulator
- G05D23/2454—Details of the regulator using photoelectric elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Devices For Use In Laboratory Experiments (AREA)
- Control Of Temperature (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は培養等の理化学実験に用いられる恒温庫に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a thermostatic chamber used for physical and chemical experiments such as culture.
（ロ） 従来技術
此種恒温庫（１）を第１図に示す。（２）は前方に開口
せる断熱箱体で、内部の貯蔵室（３）の内壁に沿って貯
水層（４）が形成されている。（５）は貯蔵室（３）加
熱用のヒーターであり、図示しない制御装置によって発
熱を制御される。ここで貯蔵室（３）は貯水層（４）を
介してヒーター（５）に一様に斑無（加熱される。（６
）は貯蔵室（３）の開口を閉塞する様に一側に回動自在
に枢支された内扉であり、（７）は内面周縁に断熱箱体
（２）の開口周縁に密着するガスケット（８）を有した
断熱性の外扉であり、内扉（６）の外側に於いて一側を
回動自在に枢支されて設けられる。(b) Conventional technology This type of thermostatic chamber (1) is shown in Fig. 1. (2) is a heat insulating box that opens at the front, and a water storage layer (4) is formed along the inner wall of an internal storage chamber (3). (5) is a heater for heating the storage chamber (3), and its heat generation is controlled by a control device (not shown). Here, the storage chamber (3) is uniformly heated by the heater (5) via the water reservoir (4). (6
) is an inner door rotatably supported on one side so as to close the opening of the storage room (3), and (7) is a gasket on the inner periphery that is in close contact with the opening periphery of the insulating box (2). (8), and is provided on the outside of the inner door (6) so as to be rotatably supported on one side.
貯蔵室（３）内は図示しない制御装置によってヒーター
（５）を制御され、所定の恒温度、恒温度とされるが、
貯蔵室（３）ｍ度と内扉（６）の温度の差によって内扉
（６）内面に結露を生じる事があり、細菌等の培養に支
障を来たす。その為、外扉（７）には、その内面に熱伝
導的に扉ヒーター（９）を設けて、この扉ヒーター（９
）の発熱にＪ：って内扉（６）を加熱して前述の結露を
防止ｌ〜ている。The heater (5) in the storage room (3) is controlled by a control device (not shown) to maintain a predetermined constant temperature.
Due to the difference in temperature between the storage room (3) m degrees and the inner door (6), condensation may occur on the inner surface of the inner door (6), which may hinder the cultivation of bacteria, etc. Therefore, a door heater (9) is provided on the inner surface of the outer door (7) for thermal conduction.
) The inner door (6) is heated to prevent the aforementioned dew condensation.
この扉ヒーター（９）の発熱量は大過ぎれば貯蔵室（３
）内温度制御に悪影響を及ぼし、又、少なければ内扉（
６）内面に結露が生じてしまう為に従来では格別な制御
装置によって適当な発熱量となる様に制御していた。If the heating value of this door heater (9) is too large,
) has a negative effect on internal temperature control, and if the temperature is low, the inner door (
6) Since dew condensation occurs on the inner surface, conventionally a special control device was used to control the amount of heat generated to an appropriate value.
（ハ）発明の目的
本発明は恒温庫に於いて外扉と貯蔵室内との間に熱の移
動を無（すれば内扉内面の結露を防止出来る点に着目し
て、該条件を満す様に、貯蔵室内加熱用のヒーターと扉
ヒーターの単位時間当りの発熱量を選択して両ヒーター
を単一の制御装置にて制御する恒温庫を提供する事にあ
る。(c) Purpose of the Invention The present invention satisfies this condition by focusing on the fact that there is no heat transfer between the outer door and the storage chamber in a constant temperature warehouse (thereby, dew condensation on the inner surface of the inner door can be prevented). Similarly, it is an object of the present invention to provide a constant temperature warehouse in which the heat generation amount per unit time of a heater for heating the storage room and a door heater is selected and both heaters are controlled by a single control device.
に）発明の構成
本発明は断熱箱体とその開口を閉塞する内扉と内扉外側
で前記開口を閉塞する断熱外扉を有し、所定の恒温度を
作る様に成した恒温庫に於いて、貯蔵室内加熱用のヒー
ターと外扉内面を加熱する扉ヒーターとを設け、貯蔵室
内加熱用のヒーターの単位時間当りの発熱量に対する扉
ヒーターの単位時間当りの発熱量の比率と貯蔵室内空気
と周囲空気との熱責流係ＦｉＥ対する外扉と周囲空気と
の熱質流係数の比率に略一致ぜｌ−めたものである。B) Structure of the Invention The present invention is a constant-temperature warehouse that has an insulated box, an inner door that closes the opening, and an insulated outer door that closes the opening outside the inner door, and is configured to maintain a predetermined constant temperature. A heater for heating the storage room and a door heater for heating the inner surface of the outer door are installed, and the ratio of the heat output per unit time of the door heater to the heat output per unit time of the heater for heating the storage room and the air in the storage room are determined. This is approximately the same as the ratio of the heat flow coefficient between the outer door and the surrounding air to the heat flux coefficient FiE between the outer door and the surrounding air.
（ホ）実施例
実施例としては第１図の恒温庫（１）を用いる。ここで
ヒーター（５）の単位時間当りの発熱量をＱｒ（Ｊｌ）
、屏ヒーター（９）の学位時間当りの発熱量をＱ、、（
９／、１）、貯蔵室（３）内温度をＴｒ（’Ｃ）、恒温
庫（１）の設膚されている周囲の温度なＴ。（’Ｃ）、
外扉（力内面の温度なＴ。ｏ （°ｃ＞、内扉（６）内
面の温度をＴｌ１ｌｆ（℃）、貯蔵室（３）内空気と周
囲空気との熱貫流係数なＫｒＡｒ （−０゜）、外扉（
力と周囲空気との熱貫流係数をＫ ｏｏ Ａ、ｏ ｏ
（”！’１１゜。）、内扉（６）内面と貯蔵室（３）内
空気との熱１１数をに、Ａ□（５・。）、内扉（６）内
面と外扉（７）内面との熱質流係数をＫＩｌｌＩＡｏＩ
（ｋｔｓｋ 、。）、外Ｊ＄（力内面と貯蔵室（３）の
間の単位時間当りの移動熱−をＱｏｒ （”／ｈ）とす
ると熱平衡状態では下式が成立する。(E) Example As an example, the constant temperature refrigerator (1) shown in FIG. 1 is used. Here, the calorific value per unit time of the heater (5) is Qr (Jl)
, the calorific value per degree hour of the folding heater (9) is Q, (
9/, 1) The temperature inside the storage room (3) is Tr ('C), and the temperature around the constant temperature storage (1) is T. ('C),
The temperature of the inner surface of the outer door (6) is Tl1lf (°C), the temperature of the inner surface of the inner door (6) is Tl1lf (°C), and the coefficient of heat transmission between the air inside the storage room (3) and the surrounding air is KrAr (-0゜), outer door (
The heat transmission coefficient between the force and the surrounding air is K oo A, o o
(''!'11゜.), heat 11 between the inner surface of the inner door (6) and the air inside the storage room (3), A□ (5.), the inner surface of the inner door (6) and the outer door (7 ) The heat flux coefficient with the inner surface is KIllIAoI
(ktsk,.), outside J$ (transfer heat per unit time between the inner surface and the storage chamber (3)) is Qor (''/h), then the following equation holds true in a state of thermal equilibrium.
Ｑ、 ＋Ｑ、ｒ＝ ｆ（、Ａ、 （Ｔ、 −Ｔｏ） ・
−−−−−−・・■Ｑｏ−Ｑｏｒ＝１（。ｏへ〇ｏ（Ｔ
Ｄｏ−Ｔｏ）・・・・・・■Ｑｏｒ二ＫＩｌｌＩＡｌ）
Ｉ（ＴＤｏ−ＴＤ、） ・・・・・・・・・■ＱＤ、＝
ＫＤｒＡｆｌ、（ＴＤ、−Ｔ、） ・・・・・・・・・
・・・■ＱＤｒ二ＫＤＩＡ□・ＫＤ、Ａｆｌｒ（ＴＤｏ
−Ｔ、 ）／（ＫＤｒＡＤｒ 十に□ＡＤ、） ・・・
・・・・・・■ここで貯蔵室（３）内に熱影響を与える
事なく、且つ内扉（６）内面に結露を生じる事が無い為
の条件は内扉（６）内面の温度が貯蔵室（３）内温度と
一致する事であり、この時外扉（力の内面の温度も貯蔵
室（３）内温度に一致し、又、外Ｎ（力内面と貯蔵室（
３）の間の単位時間当りの移動熱量も無くなるから下式
が成立する。Q, +Q, r= f(, A, (T, -To) ・
−−−−−−・・■Qo−Qor=1(.o〇o(T
Do-To)...■Qor2KillIAl)
I(TDo-TD,) ・・・・・・・・・■QD,=
KDrAfl, (TD, -T,) ・・・・・・・・・
...■QDr2KDIA□・KD,Aflr(TDo
-T, )/(KDrADr 1□AD,)...
・・・・・・■Here, the conditions for not having a thermal effect inside the storage room (3) and not causing dew condensation on the inner surface of the inner door (6) are such that the temperature on the inner surface of the inner door (6) is At this time, the temperature on the inner surface of the outer door (force) also matches the temperature inside the storage chamber (3), and the temperature on the inner surface of the outer door (force) matches the temperature inside the storage chamber (3).
Since the amount of heat transferred per unit time during 3) also disappears, the following formula holds true.
ＴＤＩ”Ｔｒ ・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・■Ｔ０゜＝Ｔｒ ・・・・・
・・用用用・・・・・・用用・・■ＱＤｒ＝０ ・・・
・・・・・・・・・・・・・・・・・・・・・・・・・
・・０以上の０式乃至０式より下式が成立する。TDI”Tr ・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・■T0゜=Tr ・・・・・・
...For use...For use...■QDr=0...
・・・・・・・・・・・・・・・・・・・・・・・・
...The following formula holds true from 0 or more 0 formulas.
Ｑｒ／ＫｒＡｒ ＝ ＱＤ／ ＫＤｏＡＤｏ””” ”
’ ”’■即ち、
ＫＤＯＡＤ。／ＫｒＡｒ＝Ｑａ／Ｑｒ ””””””＠
となり、従って貯蔵室（３）内空気と周囲空気との熱貫
流係数ＫｒＡｒと外扉（７）と周囲空気との熱貫流係数
ＫＤｏＡ、、。とを測定しておき、扉ヒーター（９）の
単位時間当りの発熱１１ＱＤ のヒーター（５）の単位
時間当りの発熱ｆＱ、に対する比率がＩ（、Ａ 、に対
するＫＤ、Ａ、（，６の比率と一致する様な扉ヒーター
（９）及びヒーター（５）を選択すれば学−の制御装置
によって内５（６）内面の結露を防止出来る。Qr/KrAr=QD/KDoADo””” ”
'''■ That is, KDOAD./KrAr=Qa/Qr ``”””””@
Therefore, the heat transfer coefficient KrAr between the air inside the storage room (3) and the surrounding air, and the heat transfer coefficient KDoA between the outer door (7) and the surrounding air. The ratio of the heat generation 11QD per unit time of the door heater (9) to the heat generation per unit time fQ of the heater (5) is the ratio of KD, A, (,6) to I(,A, If the door heater (9) and heater (5) are selected in a manner that matches the above, dew condensation on the inner surface of the inner 5 (6) can be prevented by the control device of the manufacturer.
第２図は恒温庫（１）の温度制御回路（１０）の実施例
を示している。（ＡＣ）は交流電源であり、双方向性三
端子サイリスタ（Ｉｌｌと直列にヒーター（５）及び扉
ヒーター（９）の並列回路が接続されている。０２は双
方向性三端子サイリスタＱｌ）のゲートトリガ回路を構
成する整流回路であり、（１３ａ）は整流回路０邊の通
電を制御するフォトサイリスタカプラＯＪのサイリスタ
である。０但ま制御回路であり、貯蔵室（３）内の温度
を検出する温度検出素子０均の検出動作に基づぎ所望の
恒温度とｔ「る様にフォトサイリスタカプラ（１３１を
制御する。フォトサイリスタカプラ（＋３１は制御回路
Ｏａの出力に接続され制御回路Ｏａの出力が高電位（以
下「Ｉ（」と称す。）の時にサイリスタ（１３ａ ）が
導通し、低電位（以下ｒＬＪと称す。）の時にサイリス
タ（１３ａ）は不導通である。サイリスタ（１３ａ）が
導通すれば双方向性三端子サイリスタＱｌ）がトリガさ
れて導通し、ヒーター（５）及び扉ヒーター（９）に通
電し両ヒーター（５１（９）を発熱せしめる。FIG. 2 shows an embodiment of the temperature control circuit (10) of the constant temperature warehouse (1). (AC) is an alternating current power supply, and a parallel circuit of a heater (5) and a door heater (9) is connected in series with a bidirectional three-terminal thyristor (Ill. 02 is a bidirectional three-terminal thyristor Ql). This is a rectifier circuit that constitutes a gate trigger circuit, and (13a) is a thyristor of a photothyristor coupler OJ that controls energization near the rectifier circuit 0. This control circuit controls the photothyristor coupler (131) so as to maintain a desired constant temperature based on the detection operation of the temperature detection element 0, which detects the temperature inside the storage chamber (3). The photothyristor coupler (+31) is connected to the output of the control circuit Oa, and when the output of the control circuit Oa is at a high potential (hereinafter referred to as "I(")), the thyristor (13a) becomes conductive and at a low potential (hereinafter referred to as rLJ). ), the thyristor (13a) is non-conductive.When the thyristor (13a) is conductive, the bidirectional three-terminal thyristor Ql) is triggered and conductive, and the heater (5) and door heater (9) are energized. The heater (51 (9) is made to generate heat.
即ち制御回路Ｏａはその時点の貯蔵室（３）内温度によ
って出力がＪ Ｈｊとなる時間を変化せしめ、結果的に
両ヒーター（５１９）の発熱量を増減して貯蔵室（３）
内を所望の恒温度に保つ様動作する。制御回路（１４）
はＰ制御（比例制御）或いはＰＩ副制御比例積分制御）
動作により、設定温度と貯蔵室（３）内温度との差を無
くす様、即ち両者が常に一値する様に動作するものであ
る。That is, the control circuit Oa changes the time for the output to reach J Hj depending on the temperature inside the storage chamber (3) at that time, and as a result, increases or decreases the amount of heat generated by both heaters (519) to increase or decrease the amount of heat generated in the storage chamber (3).
It operates to maintain the desired constant temperature inside. Control circuit (14)
is P control (proportional control) or PI sub-control proportional integral control)
It operates so that the difference between the set temperature and the temperature inside the storage chamber (3) is eliminated, that is, so that both are always at the same value.
ここで両ヒーター（５）（９）のＱｌ、ＱＤは０式の関
係に則って設定しておけば、両ヒーター（５）（９１が
同じ時間通電される事によって内扉（６）の内面に結露
は生じない。従って扉ヒーター（９）は格別な制御回路
を必要とせず、ヒーター（５）と並列接続して温度制御
回路ＯＩによって制御すれば良くなる。Here, if Ql and QD of both heaters (5) and (9) are set according to the relationship of formula 0, both heaters (5) (91) are energized for the same time, and the inner surface of the inner door (6) is heated. Therefore, the door heater (9) does not require a special control circuit, and can be connected in parallel with the heater (5) and controlled by the temperature control circuit OI.
（へ）発明の効果
本発明によれば恒温庫の内扉内面への結露を確実に防止
する事が出来る。又、内扉を加熱する扉ヒーターの制御
を貯蔵室内温度制御用の回路によって制御する事が可能
となり、格別な制御回路が不要となると共に、貯蔵室内
温度の種々の設定温度に拘わらず内扉内面温度を貯蔵室
内温度と一致せしめられるので、制御が容易且つ確実と
なる。(f) Effects of the Invention According to the present invention, it is possible to reliably prevent dew condensation on the inner surface of the inner door of a constant temperature refrigerator. In addition, the door heater that heats the inner door can be controlled by the storage room temperature control circuit, eliminating the need for a special control circuit and making it possible to control the inner door regardless of the various storage room temperature settings. Since the inner surface temperature can be made to match the temperature inside the storage room, control becomes easy and reliable.
各図は本発明の実施例を示すもので、第１図は恒温庫の
概略側断面図、第２図は温度制御回路図である。
（２）・・・断熱箱体、 （３）・・・貯蔵室、 （５
）・・・ヒーター、（６）・・・内扉、 （力・・・外
扉、 （９）・・・扉ヒーター。
９１Each figure shows an embodiment of the present invention; FIG. 1 is a schematic side sectional view of a thermostatic chamber, and FIG. 2 is a temperature control circuit diagram. (2)...Insulated box, (3)...Storage room, (5
)...Heater, (6)...Inner door, (Power...Outer door, (9)...Door heater. 91
Claims (1)
る様取り付けた断熱外扉と、該外扉と前記断熱箱体間に
於いて該断熱箱体の開口を開閉自在に閉塞する様取り付
けた内扉とから成り、貯蔵室内を所定の恒温度圧制御す
る恒温庫に於いて、前記貯蔵室内を加熱する様設けた貯
蔵室内加熱ヒーターと前記外扉内面を加熱する様設けた
扉ヒーターとから成り、前記貯蔵室内加熱ヒーターの単
位時間当りの発熱量に対する前記扉ヒーターの単位時間
当りの発熱量の比率が前記貯蔵室内空気と周囲空気との
熱貞流係数に対する前記外扉と前記周囲空気との熱貫流
係数の比率に略一致する様設定した事を特徴とする恒温
庫。1. An insulating box, an insulating outer door attached to open and close the opening of the insulating box, and an insulating outer door installed between the outer door and the insulating box to open and close the opening of the insulating box. In a constant-temperature warehouse that controls the inside of the storage chamber at a predetermined constant temperature and pressure, the storage chamber has a heating heater installed to heat the inside of the storage chamber, and an inner door installed to heat the inner surface of the outer door. a door heater, and the ratio of the calorific value per unit time of the door heater to the calorific value per unit time of the storage room heating heater is the ratio of the heat flux coefficient between the storage room air and ambient air to the outer door. A constant temperature warehouse characterized in that the temperature is set to substantially match the ratio of the heat transmission coefficient with the surrounding air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16086783A JPS6051917A (en) | 1983-08-31 | 1983-08-31 | Thermostatic storehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16086783A JPS6051917A (en) | 1983-08-31 | 1983-08-31 | Thermostatic storehouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6051917A true JPS6051917A (en) | 1985-03-23 |
| JPH0317121B2 JPH0317121B2 (en) | 1991-03-07 |
Family
ID=15724082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16086783A Granted JPS6051917A (en) | 1983-08-31 | 1983-08-31 | Thermostatic storehouse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6051917A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2621142A1 (en) * | 1987-09-25 | 1989-03-31 | Satin Dominique | Industrial electronic thermostat (3000 watts) |
| JPH0221033A (en) * | 1988-07-08 | 1990-01-24 | Isuzu Motors Ltd | Automatic clutch controller |
| JPH0227243A (en) * | 1988-07-15 | 1990-01-30 | Tabai Espec Corp | Thermostat |
| JPH0291000U (en) * | 1988-12-30 | 1990-07-19 | ||
| CN103268128A (en) * | 2013-04-15 | 2013-08-28 | 上海理工大学 | Microenvironment temperature control system based on singlechip |
-
1983
- 1983-08-31 JP JP16086783A patent/JPS6051917A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2621142A1 (en) * | 1987-09-25 | 1989-03-31 | Satin Dominique | Industrial electronic thermostat (3000 watts) |
| JPH0221033A (en) * | 1988-07-08 | 1990-01-24 | Isuzu Motors Ltd | Automatic clutch controller |
| JPH0227243A (en) * | 1988-07-15 | 1990-01-30 | Tabai Espec Corp | Thermostat |
| JPH0291000U (en) * | 1988-12-30 | 1990-07-19 | ||
| CN103268128A (en) * | 2013-04-15 | 2013-08-28 | 上海理工大学 | Microenvironment temperature control system based on singlechip |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0317121B2 (en) | 1991-03-07 |
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