JPS6110095Y2 - - Google Patents
Info
- Publication number
- JPS6110095Y2 JPS6110095Y2 JP7474079U JP7474079U JPS6110095Y2 JP S6110095 Y2 JPS6110095 Y2 JP S6110095Y2 JP 7474079 U JP7474079 U JP 7474079U JP 7474079 U JP7474079 U JP 7474079U JP S6110095 Y2 JPS6110095 Y2 JP S6110095Y2
- Authority
- JP
- Japan
- Prior art keywords
- floor
- heating
- front chamber
- heat
- temperature
- 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.)
- Expired
Links
- 238000010438 heat treatment Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 description 9
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 8
- 230000008014 freezing Effects 0.000 description 7
- 238000007710 freezing Methods 0.000 description 7
- 229910052697 platinum Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Surface Heating Bodies (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Central Heating Systems (AREA)
Description
【考案の詳細な説明】
この考案は、冷凍倉庫などにおける冷凍室の入
口手前に位置した前室の床面に埋設される、いわ
ゆるフロアヒーテイングとして知られる発熱装置
の改良に関するものである。[Detailed Description of the Invention] This invention relates to an improvement of a heat generating device known as so-called floor heating, which is buried in the floor of a front room located in front of the entrance of a freezing room in a cold storage warehouse or the like.
第１図は、かかる冷凍倉庫の冷凍室等の上面図
であつて、発熱装置の床面埋設位置を説明するた
めの図である。同図を参照する。冷凍室１は−10
℃から−55℃程度の室温に維持される。冷凍室１
に隣接して前室２が位置するが、冷凍室１と前室
２との間には通常扉などはない。前室２と外部通
路３との間には防熱扉４が設けられる。マグロな
どの被冷凍物を載せた運搬車（図示せず）が、防
熱扉４をあけて外部通路３から前室２を通つて冷
凍室１に入るようになつている。冷凍室１内は上
述のとおり非常な低温にあるが、水分がないので
床面が凍るようなことはない。これに対し前室２
では、扉４をあけたとき外気が侵入するので、外
気中の水分のため床面が凍る。床面が凍ると、運
搬車の進行の妨げとなるので、これを防止する必
要がある。このような事情で近年は、冷凍室入口
手前の前室、特に斜線で示し如き、防熱扉４から
冷凍室１の入口に至る部分Ｓにフロアヒーテイン
グ装置を設置することが不可欠となつている。防
熱扉４から外の近傍外部通路部分、例えば点線で
囲んで示した部分Ｍにもフロアヒーテイング装置
を設けることが望ましい。何故ならば、防熱扉４
の開閉に伴い外部通路に漏れる冷気のために、そ
のような外部通路床面も凍ることがあるからであ
る。 FIG. 1 is a top view of the freezer compartment, etc. of such a cold storage warehouse, and is a diagram for explaining the position where the heat generating device is buried in the floor. Refer to the same figure. Freezer compartment 1 is -10
The room temperature is maintained between ℃ and -55℃. Freezer compartment 1
The front chamber 2 is located adjacent to the freezer compartment 1, but there is usually no door between the freezer compartment 1 and the front chamber 2. A heat-insulating door 4 is provided between the front chamber 2 and the external passage 3. A transport vehicle (not shown) carrying objects to be frozen, such as tuna, opens a heat-insulating door 4 and enters a freezing chamber 1 from an external passage 3 through a front chamber 2. As mentioned above, the inside of the freezer compartment 1 is at a very low temperature, but since there is no moisture, the floor does not freeze. On the other hand, the front chamber 2
Then, when the door 4 is opened, outside air enters, and the floor freezes due to moisture in the outside air. If the floor surface freezes, it will impede the progress of the transport vehicle, so it is necessary to prevent this. Under these circumstances, in recent years, it has become essential to install a floor heating device in the front room in front of the entrance to the freezer compartment, especially in the section S from the heat-insulating door 4 to the entrance to the freezer compartment 1, as shown by diagonal lines. . It is desirable to provide a floor heating device also in the vicinity of the external passageway outside the heat-insulating door 4, for example, in a portion M shown surrounded by a dotted line. Because heatproof door 4
This is because the floor surfaces of such external passages may also freeze due to the cold air leaking into the external passages as the doors open and close.
ところで、かかるフロアヒーテイング方式の従
来例としては次のようなものがあつた。 By the way, the following are conventional examples of such floor heating systems.
イ 前室部分Ｓと外側通路部分Ｍの全体に、発熱
線を同じ布設密度で埋設し、前室部分Ｓの適宜
の位置に埋設した白金測温抵抗体により検出さ
れる床面温度に基づき、発熱線への印加電力を
自動制御する方式で、床面加熱電力として、
300〜450W／m2が採用される。(a) Heat-generating wires are buried in the entire front chamber part S and outer passageway part M at the same density, and based on the floor surface temperature detected by platinum resistance thermometers buried at appropriate positions in the front chamber part S, A method that automatically controls the power applied to the heating wire, which can be used as floor heating power.
300-450W/ m2 is adopted.
ロ 前室部分Ｓと外側通路部分Ｍの全体に、発熱
線を同じ布設密度で埋設するが、加熱電力を低
い値として連続運転を行ない、自動制御は行な
わない方式。この場合、加熱電力は200W／m2
程度が採用される。(b) A method in which heating wires are buried at the same density throughout the front chamber section S and the outer passage section M, but continuous operation is performed with the heating power set to a low value, and automatic control is not performed. In this case, the heating power is 200W/m 2
degree is adopted.
ハ 前室部分Ｓと外側通路部分Ｍとでは、フロア
ヒーテイング装置を別回路として設け、それぞ
れ別個に白金測温抵抗体を埋設し、加熱電力の
自動制御を行なう方式。この場合、加熱電力
は、前室において300〜450W／m2、外側通路部
分で200W／m2程度が採用される。(c) A method in which floor heating devices are provided as separate circuits in the front chamber section S and the outer passageway section M, and platinum resistance temperature detectors are separately embedded in each circuit, and heating power is automatically controlled. In this case, the heating power is 300 to 450 W/m 2 in the front chamber and about 200 W/m 2 in the outer passage.
ニ 前室部分Ｓのみ、白金測温抵抗体を埋設し、
検出された床面温度に基づき、加熱電力を自動
制御する方式で、加熱電力は300〜450W／m2。
外側通路部分にはフロアヒーテイングを実施し
ない。(d) A platinum resistance thermometer is embedded only in the front chamber part S,
The heating power is automatically controlled based on the detected floor temperature, and the heating power is 300 to 450W/m 2 .
Floor heating will not be provided in the outside aisle area.
さて上述した従来方式の欠点を説明する。上記
イの方式では、前室部分Ｓが−30℃、外側通路部
分Ｍが夏場において＋35℃になると想定されるか
ら、前室部分に埋置した白金測温抵抗体１本によ
る検出温度に基づき発熱線への加熱電力を制御し
ていたのでは、外側通路部分Ｍにおける発熱体
（発熱線）の温度が高くなりすぎ発熱体自体が劣
化し、故障の原因となる。ロの方式では、発熱体
の劣化は発生しないが、加熱電力を低くせざるを
得ないため床面が凍結することがあり、前室部分
において充分なフロアヒーテイング効果を期体で
きないことがある。ハの方式は、理論的には最良
の方式であるが、コストが非常に高くなり（他の
方式の約1.5〜1.8倍）、その上操作が複雑になる
という欠点がある。ニの方式では、防熱扉の下と
か外側通路部分で床面凍結を起こすことがあり、
運搬車の搬入に支障をきたし易いという欠点があ
る。 Now, the drawbacks of the above-mentioned conventional method will be explained. In method A above, it is assumed that the temperature in the front chamber part S is -30℃ and the outer passageway part M is +35℃ in summer, so based on the temperature detected by one platinum resistance thermometer buried in the front chamber part If the heating power to the heating wire is controlled, the temperature of the heating element (heating wire) in the outer passage portion M will become too high, and the heating element itself will deteriorate, causing a failure. With method (b), the heating element does not deteriorate, but the heating power has to be lowered, which may cause the floor to freeze, and it may not be possible to achieve a sufficient floor heating effect in the front room. . Although method Ha is theoretically the best method, it has the drawbacks of extremely high cost (approximately 1.5 to 1.8 times as much as other methods) and complicated operation. With method 2, the floor may freeze under the heat-insulating door or in the outside passageway.
It has the disadvantage that it can easily cause problems when transporting vehicles.
この考案は、上述の如き従来方式の諸欠点を克
服するためになされたものであり、従つてこの考
案の目的は、どの部分の発熱体も高温になりすぎ
て劣化したりすることがなく、またどの部分の床
面も凍結することがなく、而もコストが低廉で操
作性も良好な冷凍室入口手前に設置する冷凍倉庫
の床面加熱制御装置を提供することにある。 This invention was made in order to overcome the drawbacks of the conventional method as described above, and the purpose of this invention is to prevent any part of the heating element from becoming too hot and deteriorating. Another object of the present invention is to provide a floor heating control device for a frozen warehouse installed in front of the entrance of a freezing room, which prevents any part of the floor from freezing, is inexpensive, and has good operability.
この考案の構成の要点は、冷凍室入口手前の前
室では比較的密に、また外部通路部分では比較的
疎に発熱体を布設し、前室の床面に埋設される測
温体の検出温度に基づき発熱体への電力供給を自
動制御しても、外側通路部分における発熱体が高
温になりすぎないように構成した点にある。 The key point of this design is that heating elements are laid relatively densely in the front chamber in front of the entrance to the freezer compartment, and relatively sparsely in the external passage, and the temperature sensing elements buried in the floor of the front chamber are detected. Even if the power supply to the heating element is automatically controlled based on the temperature, the heating element in the outer passage does not become too hot.
なお、かかる自動制御を実施するのは、それに
よつて加熱電力（エネルギー）の可能な限りの節
減を図るためである。 Note that the reason why such automatic control is implemented is to save heating power (energy) as much as possible.
次に図参照してこの考案の一実施例を説明す
る。 Next, an embodiment of this invention will be described with reference to the drawings.
第２図はこの考案の一実施例を示す構成概要図
である。同図において、５は冷凍室の前室Ｓ並び
にその近傍外部通路Ｍの床面に跨がつて蛇行状に
埋設される発熱線であり、該発熱線としては例え
ばプチルゴム絶縁耐熱ビニルシースケーブルが用
いられる。この発熱線５は、接続ボツクス６にお
いて、電線管７内に布設されているリードケーブ
ル（図示せず）に接続される。該リードケーブル
は、電線管７内を図示せざる分電盤へ導かれる。
分電盤では、図示せざる自動制御装置が、前室Ｓ
の床面に埋設された測温抵抗体８の検出する温度
に基づき、発熱線５へ供給する電力を制御する。 FIG. 2 is a schematic configuration diagram showing an embodiment of this invention. In the figure, reference numeral 5 denotes a heating wire buried in a meandering manner across the floor of the front chamber S of the freezer compartment and the external passage M in its vicinity, and the heating wire is made of, for example, a heat-resistant vinyl sheathed cable insulated with plastic rubber. . This heating wire 5 is connected to a lead cable (not shown) installed in a conduit 7 at a connection box 6 . The lead cable is guided inside the conduit 7 to a distribution board (not shown).
At the distribution board, an automatic control device (not shown) controls the
The electric power supplied to the heating wire 5 is controlled based on the temperature detected by the resistance temperature detector 8 buried in the floor surface of the heater.
従来は、前室部分Ｓにおいても、外部通路部分
Ｍにおいても、埋設される発熱線５の布設ピツチ
Ｐは一定であつたが、この考案では、前室部分Ｓ
における布設ピツチをＰとすると、外側通路部分
Ｍでは布設ピッチを1.5P乃至2Pにとる。すなわ
ち外側通路部分における単位面積当りの加熱電力
を前室部分のそれよりも小さく設定している。 Conventionally, the installation pitch P of the buried heating wire 5 was constant both in the front chamber part S and in the external passage part M, but in this invention,
Letting P be the laying pitch in the outer passage section M, the laying pitch is set to 1.5P to 2P. That is, the heating power per unit area in the outer passage portion is set smaller than that in the front chamber portion.
具体例を説明する。冷凍室における室温が−30
℃であると想定した場合、前室部分Ｓにおける加
熱電力を400W／m2（布設ピツチ40mm）、外側通路
部分Ｍにおける加熱電力を200W／m2（布設する
ピツチ80mm）に設計すると、分電盤における自動
制御装置（温度調節装置）の設定温度を０℃とし
たとき、装置の稼動率は64％程度となり、等価発
熱量243W／m2で全時間連続運転したことに相当
し、加熱電力費も低廉ですむことが判明してい
る。また夏期における防熱扉近傍の外部通路部分
の発熱体の導体温度も約80℃程度で熱劣化の心配
がなく、また冬期においても防熱扉近傍、外部通
路部分における床面凍結の心配も全くないことが
判明している。 A specific example will be explained. The room temperature in the freezer is -30
℃, and if the heating power in the front chamber part S is designed to be 400W/m 2 (laying pitch 40mm) and the heating power in the outer passageway part M is 200W/m 2 (laying pitch 80mm), the distribution When the set temperature of the automatic control device (temperature control device) on the panel is 0℃, the operating rate of the device is approximately 64%, which corresponds to continuous operation for the entire time with an equivalent calorific value of 243W/ m2 , and the heating power It has also been found to be inexpensive. In addition, the temperature of the conductor of the heating element in the external passage near the heat-insulated door in the summer is approximately 80°C, so there is no risk of thermal deterioration, and there is no fear of floor freezing near the heat-insulated door or in the external passage in the winter. It is clear that
以上説明したとおりであるから、この考案の制
御装置によれば、夏期においても発熱体の一部が
高温になりすぎて劣化したりすることがなく、し
かも冬期においても前室部分および防熱扉近傍の
外部通路部分の凍結を防止することができ、しか
も装置のコストおよび電力費も低廉ですみ、操作
性も良好であるという利点がある。また万一、前
室内で凍結が起きてしまつたときは、装置を手動
運転に切り換えることにより、高い加熱電力で連
続運転して氷を溶かすことも可能である。 As explained above, according to the control device of this invention, a part of the heating element does not become too hot and deteriorate even in the summer, and even in the winter, the area near the front room and the heat insulation door It has the advantage of being able to prevent freezing of the external passages of the device, lowering the cost and power cost of the device, and having good operability. Furthermore, in the unlikely event that freezing occurs in the front chamber, the device can be switched to manual operation and operated continuously with high heating power to melt the ice.
第１図は、冷凍室等の上面図であり、第２図は
この考案の一実施例を示す概要図である。
図において、１は冷凍室、２は前室、３は外部
通路、４は防熱扉、５は発熱線、６は接続ボツク
ス、７は電線管、８は測温抵抗体、を示す。
FIG. 1 is a top view of the freezer compartment, etc., and FIG. 2 is a schematic diagram showing an embodiment of this invention. In the figure, 1 is a freezer compartment, 2 is a front chamber, 3 is an external passage, 4 is a heat-insulating door, 5 is a heating wire, 6 is a connection box, 7 is a conduit, and 8 is a resistance temperature detector.
Claims (1)
により仕切られた前室の床面と上記防熱扉を越え
て位置する近傍外部通路の床面とに跨がつて発熱
線を蛇行状に埋設し、前室床面の所定位置におけ
る温度に従つて前記発熱線による床面加熱を自動
制御する冷凍倉庫の床面加熱制御装置において、 前記発熱線の蛇行状に布設されるその布設ピツ
チを前室部分では比較的密に、外部通路部分では
比較的疎にしたことを特徴とする冷凍倉庫の床面
加熱制御装置。[Scope of Claim for Utility Model Registration] A system that straddles the floor of the front chamber, which is located in front of the entrance of the freezer compartment and is separated from the external passage by a heat-insulating door, and the floor of a nearby external passage located beyond the heat-insulating door. In a floor heating control device for a cold storage warehouse, a heating wire is embedded in a meandering shape, and the floor heating by the heating wire is automatically controlled according to the temperature at a predetermined position on the floor surface of a front room. A floor heating control device for a refrigerated warehouse, characterized in that the laying pitch is relatively dense in a front room portion and relatively sparse in an external passageway portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7474079U JPS6110095Y2 (en) | 1979-06-04 | 1979-06-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7474079U JPS6110095Y2 (en) | 1979-06-04 | 1979-06-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55174519U JPS55174519U (en) | 1980-12-15 |
| JPS6110095Y2 true JPS6110095Y2 (en) | 1986-04-01 |
Family
ID=29308313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7474079U Expired JPS6110095Y2 (en) | 1979-06-04 | 1979-06-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6110095Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59176569A (en) * | 1983-03-26 | 1984-10-05 | 有限会社 日和冷工 | Manufacture of concrete heater |
-
1979
- 1979-06-04 JP JP7474079U patent/JPS6110095Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55174519U (en) | 1980-12-15 |
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