JPH0449493Y2 - - Google Patents
Info
- Publication number
- JPH0449493Y2 JPH0449493Y2 JP1986181728U JP18172886U JPH0449493Y2 JP H0449493 Y2 JPH0449493 Y2 JP H0449493Y2 JP 1986181728 U JP1986181728 U JP 1986181728U JP 18172886 U JP18172886 U JP 18172886U JP H0449493 Y2 JPH0449493 Y2 JP H0449493Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- refrigerant circulating
- water
- outside air
- circulating liquid
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 239000003507 refrigerant Substances 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 15
- 230000013011 mating Effects 0.000 claims description 5
- 229920003002 synthetic resin Polymers 0.000 claims description 5
- 239000000057 synthetic resin Substances 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000001816 cooling Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は空調装置、冷凍装置などに用いる冷
却塔における密閉型熱交換器に係るものであつ
て、殊に気液非接触型の密閉型熱交換器に関す
る。[Detailed description of the invention] (Field of industrial application) This invention relates to a closed-type heat exchanger in a cooling tower used for air conditioners, refrigeration equipment, etc. Regarding heat exchangers.
（従来技術）
従来冷却塔に使用されている内部に冷媒循環液
を通し、外面に水を散布し、かつ、この散布水と
外気とを接触させて内部の冷媒循環液を冷却する
密閉型熱交換器であつて、この熱交換器は、それ
ぞれ扁平な板の合せ面間に冷媒循環液通路が形成
された熱交換体を多数枚並設して構成されている
ものにおいては、完全密閉型のため熱交換器内圧
が高くなる場合がありこれらの構成部材を充分に
丈夫にする必要があつた。またこれらの供給側の
ヘツダーには、圧力調整タンクを必ず必要とし、
この部分で水位を一定に保つように、自動給水装
置が必要である（第５図参照）。(Prior technology) A closed-type heat exchanger, which is conventionally used in cooling towers, cools the internal refrigerant circulating fluid by passing the refrigerant circulating fluid inside the tower, spraying water on the outside, and bringing the sprayed water into contact with the outside air. A heat exchanger that is constructed by arranging a number of heat exchangers in which a refrigerant circulating fluid passage is formed between the mating surfaces of each flat plate is a completely sealed type. Therefore, the internal pressure of the heat exchanger may become high, and it is necessary to make these structural members sufficiently strong. In addition, these supply side headers always require a pressure adjustment tank,
An automatic water supply system is required to maintain a constant water level in this area (see Figure 5).
（問題点）
このように公知乃至先行技術のものにおいて
は、冬期において負荷が少なく、運転が不連続の
ときや、運転を一時的に停止するときに、水抜き
を忘れる虞れがあつた。(Problem) As described above, in the known or prior art, there is a risk of forgetting to drain water during winter when the load is low and operation is discontinuous or when operation is temporarily stopped.
（解決しようとする問題点）
この考案は、前記の氷結事故や内圧による破壊
事故を起さず、圧力タンクを省き構造を簡略にす
ることであり、かかる問題点を満足する気液非接
触で密閉型熱交換器を市場に提供することを目的
とする。(Problems to be solved) This idea eliminates the above-mentioned freezing accidents and destruction accidents due to internal pressure, omits the pressure tank, and simplifies the structure. The purpose is to provide sealed heat exchangers to the market.
（問題点を解決する手段）
この考案は内部の冷媒循環液を通し、外面に水
を散布し、かつ、この散布水と外気とを接触させ
て内部の冷媒循環液を冷却する密閉型熱交換器で
あつて、この熱交換器は、それぞれ扁平な板の合
せ面間に冷媒循環液通路が形成された熱交換体を
多数枚並設して構成されているものにおいて、前
記各熱交換体は合成樹脂薄肉製の扁平な中空体よ
りなり、これらの両壁面を構成する合成樹脂板は
相互に溶着して、これら一対の合せ面間に屈曲し
た冷媒循環液通路が形成してあり、これら各熱交
換体は少なくともそれぞれの上部供給口部で外気
に開放した通気部を有し、それぞれの下部吐出口
は、共通の外気連通型の冷媒循環液下部溜水槽の
接続してあることを特徴とする密閉型熱交換器と
することによつて問題点を解決した。(Means to solve the problem) This idea is a closed type heat exchanger that passes water through the internal refrigerant circulation liquid and sprays it on the outside surface, and then cools the internal refrigerant circulation liquid by making the sprayed water contact with the outside air. This heat exchanger is constructed by arranging a number of heat exchangers in parallel, each of which has a refrigerant circulating fluid passage formed between the mating surfaces of flat plates, in which each of the heat exchangers consists of a flat hollow body made of thin synthetic resin, and the synthetic resin plates constituting both walls are welded together to form a curved refrigerant circulating fluid passage between the pair of mating surfaces. Each heat exchanger has at least a ventilation section open to the outside air at each upper supply port, and each lower discharge port is connected to a common outside air-communicated refrigerant circulating liquid lower storage tank. The problem was solved by using a closed heat exchanger.
（作用）
叙上のように構成しているこの考案のものにお
いては、冷媒循環液系の回路において、負荷部で
温められた冷媒循環液は直接熱交換器の多数の熱
交換体中の冷媒循環液通路中を流れて、下部の吐
出口より冷媒循環液下部溜水槽に一括流入し、負
荷部に戻る。このとき各熱交換体中には外気も連
行され、下部溜水槽に流下する。(Function) In this device configured as described above, in the circuit of the refrigerant circulating liquid system, the refrigerant circulating liquid warmed in the load section directly transfers the refrigerant in the many heat exchangers of the heat exchanger. The refrigerant circulates through the circulating fluid passage, flows into the refrigerant circulating fluid lower reservoir tank from the lower discharge port, and returns to the load section. At this time, outside air is also entrained in each heat exchanger and flows down to the lower water tank.
従つて、運転を停止すると各熱交換体中の冷媒
循環液はすべて、下部溜水槽に流下し、これら各
熱交換体中は空気だけとなる。 Therefore, when the operation is stopped, all of the refrigerant circulating liquid in each heat exchanger flows down to the lower water tank, leaving only air in each heat exchanger.
また前記下部溜水槽中の水位が上昇し、この中
の空気は外部に放出される。 Further, the water level in the lower water tank rises, and the air therein is discharged to the outside.
他方、各熱交換体の外面に散布される散布水系
の水は公知の装置と全く同様に上部の散水装置よ
り熱交換器の各熱交換体外面に散布され前記冷媒
循環液と混合することなく冷却塔下部の落し込み
水槽に集められ、再び上部散水装置に循環する。 On the other hand, the water of the spray water system, which is sprayed on the outer surface of each heat exchanger, is sprayed onto the outer surface of each heat exchanger of the heat exchanger from the upper water spraying device, just like the known device, without mixing with the refrigerant circulating fluid. It is collected in a drop-in water tank at the bottom of the cooling tower and circulated again to the upper sprinkler system.
（効果）
叙上のように構成し、作用を為すこの考案のも
のにおいては、各熱交換体は外気連通型であり、
かつこの下部吐出口は、共通型の冷媒循環液下部
溜水槽に接続してあるから、冷却塔の運転を停止
すればすべての熱交換体中の冷媒循環液は外気と
入れ替わりこの下部溜水槽中に流下し、空になる
ため、これらの熱交換体の内部で冷媒循環液が氷
結するおそれがない。また冷媒循環液の水量が仮
に変動したとしても、熱交換体中に外気が連行さ
れる量がそれに伴つて変動するだけで熱交換体中
の冷媒循環液通路が負圧になることなく、大気圧
で圧潰のおそれがない。(Effects) In this device constructed and operated as described above, each heat exchanger is of the outside air communication type,
In addition, this lower discharge port is connected to the common type lower refrigerant circulating liquid storage tank, so when the operation of the cooling tower is stopped, the refrigerant circulating liquid in all the heat exchangers is replaced with outside air, and the refrigerant circulating liquid in this lower storage tank is replaced with outside air. Since the refrigerant circulation liquid flows down and becomes empty, there is no risk of the refrigerant circulating liquid freezing inside these heat exchangers. Furthermore, even if the amount of water in the refrigerant circulating fluid fluctuates, the amount of outside air entrained into the heat exchanger will only change accordingly, and the refrigerant circulating fluid passage in the heat exchanger will not become under negative pressure. There is no risk of crushing due to atmospheric pressure.
従つて、金属製の熱交換体であつても従来より
薄肉のものや、機械的強度の小さい金属も採用で
き、軽量化に役立つ。 Therefore, even if the heat exchanger is made of metal, it is possible to use a thinner metal than before or a metal with low mechanical strength, which helps to reduce the weight.
また従来熱交換体としては強度が弱いため殆ど
顧りみられなかつた真空成形乃至ブロー成形の熱
交換体の採用が可能となり、著しくコストを低下
させることができる。 In addition, it is possible to employ vacuum-formed or blow-molded heat exchangers, which have been neglected as conventional heat exchangers due to their low strength, and can significantly reduce costs.
更に冷却塔据付に対しても、圧力調整タンクを
別個に設置の必要がなく、据付の施工が簡素化さ
れ、前記の水抜き作業の不要から、取扱い作業が
容易となる。 Furthermore, when installing a cooling tower, there is no need to separately install a pressure adjustment tank, simplifying the installation process, and eliminating the need for the water draining process, which facilitates handling.
（実施態様）
今この考案を第１図乃至第４図に示す代表的な
実施態様に基づいて説明する。(Embodiments) This invention will now be described based on typical embodiments shown in FIGS. 1 to 4.
図において、１０は冷却塔、１１はその外筺、
１２はこの中に設けた気液非接触型の熱交換器で
あり、これを構成する各熱交換体１３は、図示の
例においては真空成形若しくはブロー成形した扁
平な中空体よりなり、その両壁板１４，１５間の
合せ目に冷媒循環液通路１６が構成されており、
図示のものは冷媒循環液通路１６は各熱交換体１
３中において、この両壁板１４，１５の大部分の
面積を占める屈曲通路１７と垂直方向の溢水路１
８と垂直方向の両壁板１４，１５を相互に溶着し
た区画シール部１９によつて区切られ、流路とし
て並列に設けてある屈曲通路１７部分は両壁板１
４，１５を水平方向に溶着した邪魔シール部２０
の位置を数段設けて、これら邪魔シール部２０間
のジツグザツクにして形成されている。邪魔シー
ル部２０の形状は図示の形状に限定されず、細か
い邪魔シール部２０を上下の位置をずらして分布
させたものでもよい。これら熱交換体１３の上縁
には前記冷媒循環液通路１６に通じる供給口２１
がまた下端には吐出口２２が設けてある。 In the figure, 10 is a cooling tower, 11 is its outer casing,
Reference numeral 12 designates a gas-liquid non-contact type heat exchanger provided therein, and each heat exchanger 13 constituting this is a flat hollow body formed by vacuum forming or blow molding in the illustrated example. A refrigerant circulating fluid passage 16 is formed at the joint between the wall plates 14 and 15,
In the illustrated refrigerant circulation passage 16, each heat exchanger 1
3, a bent passageway 17 and a vertical overflow channel 1 occupying most of the area of both wall plates 14 and 15.
8 and the vertical wall plates 14 and 15 are mutually welded to each other by a partition seal 19, and the bent passage 17 portion provided in parallel as a flow path is connected to both wall plates 1.
4 and 15 horizontally welded together
The baffle seal portions 20 are formed in a zigzag manner by providing several stages of positions. The shape of the baffle seal portion 20 is not limited to the illustrated shape, and fine baffle seal portions 20 may be distributed by shifting their vertical positions. A supply port 21 communicating with the refrigerant circulation passage 16 is provided at the upper edge of these heat exchangers 13.
A discharge port 22 is also provided at the lower end.
このように構成している各熱交換体１３は所定
間隔において垂直方向に並設して、各供給口２１
は共通のヘツダー２３に接続されて、各熱交換体
１３間に気体通路２４が形成されており、更に各
供給口２１とヘツダー接続パイプ２５との間には
隙間２１ａによつて通気部が形成してあつて、各
熱交換体１３は外気連通型になつている。 The heat exchangers 13 configured in this manner are arranged vertically in parallel at predetermined intervals, and are connected to each supply port 21.
are connected to a common header 23, and a gas passage 24 is formed between each heat exchanger 13, and a ventilation section is formed between each supply port 21 and the header connection pipe 25 by a gap 21a. Each heat exchanger 13 is of the outside air communication type.
前記熱交換器１２の下側には冷媒循環液溜水槽
２６が設けてあり、この溜水槽２６の容積は、前
記の熱交換器１２の各熱交換体１３中の液体通路
の容積よりも大きく、好ましくは1.5乃至２倍程
度の容積としてあり、前記溜水槽２６の上部開口
部２７には前記各熱交換体１３の吐出口２２が挿
入してある。この吐出口も共通の吐出側ヘツダー
を介して、前記開口部２７に連結してもこの考案
としては同じである。この場合にも前記開口部２
７は外気に対して開口され、やはり通気部を形成
している。 A refrigerant circulating liquid storage tank 26 is provided below the heat exchanger 12, and the volume of this storage tank 26 is larger than the volume of the liquid passage in each heat exchange body 13 of the heat exchanger 12. , preferably about 1.5 to 2 times the volume, and the discharge ports 22 of the heat exchangers 13 are inserted into the upper opening 27 of the water tank 26. Even if this discharge port is also connected to the opening 27 through a common discharge side header, the invention remains the same. In this case as well, the opening 2
7 is opened to the outside air and also forms a ventilation section.
その他溜水槽２６は、冷却塔１０の外筺１１内
に設けてあり、冷媒循環液系のパイプ２７は溜水
槽２６の下部より弁２８、ポンプ２９を介して負
荷部３０に連なり、更にヘツダー２３に弁３１を
介して接続され冷媒循環液系の回路を構成してい
る。 In addition, the reservoir tank 26 is provided inside the outer casing 11 of the cooling tower 10, and a pipe 27 for the refrigerant circulation system is connected from the lower part of the reservoir tank 26 to the load section 30 via a valve 28 and a pump 29. is connected to via a valve 31 to form a circuit of a refrigerant circulation system.
外筺１１の熱交換器１２のある部分には外気取
入口３２が反対側の外筺１１中には垂直方向の空
気通過室３３が形成され空気通過室３３の下端は
散布水の落し込み水槽３４が設けてあり空気通過
室３３の上端が排気口３５となつている。 An outside air intake port 32 is formed in the part of the outer casing 11 where the heat exchanger 12 is located, and a vertical air passage chamber 33 is formed in the outer casing 11 on the opposite side.The lower end of the air passage chamber 33 is a water tank into which sprayed water is dropped. 34 is provided, and the upper end of the air passage chamber 33 serves as an exhaust port 35.
前記熱交換器１２の上には散布装置３６が設け
てあり、これより散水された散布水は、熱交換器
１２と溜水槽２６の間に設けられた傾斜水受板３
７によつて落し込み水槽３４に集められ、これよ
り散水系のパイプ３８、弁３９、揚水ポンプ４０
を介して、前記散水装置３６に接続されて散布水
系の回路を構成している。 A spraying device 36 is provided above the heat exchanger 12, and the sprayed water from the spraying device 36 is distributed to the inclined water receiving plate 3 provided between the heat exchanger 12 and the water tank 26.
7, the water is collected in a dropping water tank 34, and from this water is supplied to a water sprinkling system, including pipes 38, valves 39, and pumps 40.
It is connected to the water sprinkling device 36 via the sprinkling device 36 to form a spray water system circuit.
この溜水槽２６には水位によつて開閉する弁を
もつ自動給水装置４１を設けておくことが好まし
い。 It is preferable that this water tank 26 is provided with an automatic water supply device 41 having a valve that opens and closes depending on the water level.
（実施態様の作用及び効果）
このような実施態様のものにおいて、装置を運
転すると溜水槽２６中の循環水は負荷部３０を通
つて冷媒循環液系のパイプより共通のヘツダー２
３に流入し、冷媒循環液は各パイプ２５より熱交
換器１２の各熱交換体１３中の冷媒循環液通路１
６中に入り、各屈曲通路１７中を流れる間に両壁
板１４，１５を介して、気体通路２４を流れる外
気及び散布水と熱交換を行いその後、吐出口２２
より前記溜水槽２６に復帰一巡する。(Operations and Effects of the Embodiment) In this embodiment, when the device is operated, the circulating water in the storage tank 26 passes through the load section 30 and is transferred to the common header 2 from the pipe of the refrigerant circulation system.
3, and the refrigerant circulating liquid flows from each pipe 25 to the refrigerant circulating liquid passage 1 in each heat exchanger 13 of the heat exchanger 12.
6, and while flowing through each bent passage 17, it exchanges heat with the outside air and spray water flowing through the gas passage 24 via both wall plates 14 and 15, and then the discharge port 22
Then, the water returns to the water tank 26 and makes a full cycle.
他方、散布水系においては、揚水ポンプ４０に
より落し込み水槽３４中の散布水は散水装置３６
に汲み揚げられて、これより各熱交換体１３の外
側に散布されこれら各熱交換体１３の表面を流下
して、傾斜受水板３７上に落下した後、落し込み
水槽３４に戻る。 On the other hand, in the spray water system, the spray water in the dropping water tank 34 is pumped by the water pump 40 to the water sprinkler 36.
The heat exchangers 13 are pumped up and dispersed from there to the outside of each heat exchanger 13, flow down the surface of each heat exchanger 13, fall onto the inclined water receiving plate 37, and then return to the dropping water tank 34.
また外気取入口３２よりの空気流は熱交換器１
２の各気体通路２４を通つて、空気通過室３３に
入り排気口３５より上方に排気される。 In addition, the air flow from the outside air intake port 32 is connected to the heat exchanger 1
The air enters the air passage chamber 33 through the two gas passages 24 and is exhausted upward from the exhaust port 35.
叙上のようにこの態様の熱交換器は通常の気液
非接触型の密閉型の熱交換器と同様の熱交換を行
う外、前記実施態様特有の効果を次の通り奏す
る。 As mentioned above, the heat exchanger of this embodiment performs the same heat exchange as a normal gas-liquid non-contact closed type heat exchanger, and also exhibits the following effects unique to the above embodiment.
前記各熱交換体１３を真空成形ブロー成形など
よりなる合成樹脂成形品とした態様においては、
その重量を軽量にでき、製造コストを廉価でき
る。 In an embodiment in which each of the heat exchangers 13 is a synthetic resin molded product made by vacuum molding blow molding or the like,
Its weight can be reduced and manufacturing costs can be reduced.
前記各熱交換体１３の冷媒循環液通路１６が屈
曲通路１７と溢水路１８が区画シール部１９で区
切られている態様においては、屈曲通路１７の一
部に塵埃や、微生物によつて、目詰まりして、流
量が制限されたときは、区画シール部１９の上端
の堰を乗り越えて、溢水路１８より流下するた
め、その熱交換体１３の熱交換効率は低下するが
流量自体は変化せず、運転の継続が可能である。 In the embodiment in which the refrigerant circulating fluid passage 16 of each heat exchanger 13 is divided into a bent passage 17 and an overflow passage 18 by a division seal portion 19, a part of the bent passage 17 is exposed to dust and microorganisms. When it is clogged and the flow rate is restricted, the flow overflows the weir at the upper end of the compartment seal 19 and flows down from the overflow channel 18, so the heat exchange efficiency of the heat exchange body 13 decreases, but the flow rate itself does not change. However, it is possible to continue operation.
また運転停止時にこの溜水槽２６中に流下した
冷媒循環液の表面積は、熱交換体１３に分散して
いるときよりも、遥かに小さく氷結し難い。 Furthermore, the surface area of the refrigerant circulating liquid that has flowed down into the reservoir tank 26 at the time of shutdown is much smaller and less likely to freeze than when it is dispersed in the heat exchanger 13.
図面はこの考案に係るものを示すものであつ
て、第１図はこの考案の実施態様の全体縦断側面
図、第２図は熱交換体の一例を示す側面図、第３
図は第２図の３−３線縦断矢視正面図、第４図は
第２図の４−４線横断平面図、第５図は従来例の
縦断側面図である。
図中の主な符号、１０……冷却塔、１１……外
筺、１２……熱交換器、１３……熱交換体、１
４，１５……壁板、１６……冷媒循環液通路、２
１ａ……隙間、２６……溜水槽。
The drawings show things related to this invention, in which Fig. 1 is an overall vertical sectional side view of an embodiment of this invention, Fig. 2 is a side view showing an example of a heat exchanger, and Fig. 3 is a side view showing an example of a heat exchanger.
The figure is a front view taken along the line 3--3 in FIG. 2, FIG. 4 is a plan view taken along the line 4--4 in FIG. 2, and FIG. 5 is a side view taken in longitudinal section of the conventional example. Main symbols in the diagram: 10...Cooling tower, 11...Outer casing, 12...Heat exchanger, 13...Heat exchange body, 1
4, 15...Wall plate, 16...Refrigerant circulating fluid passage, 2
1a...Gap, 26...Water tank.
Claims (1)
かつ、この散布水と外気とを接触させて内部の冷
媒循環液を冷却する密閉型熱交換器であつて、こ
の熱交換器は、それぞれ扁平な板の合せ面間に冷
媒循環液通路が形成された熱交換体を多数枚並設
して構成されているものにおいて、 前記各熱交換体は合成樹脂薄肉製の扁平な中空
体よりなり、これらの両壁面を構成する合成樹脂
板は相互に溶着して、これら一対の合せ面間に屈
曲した冷媒循環液通路が形成してあり、これら各
熱交換体は少なくともそれぞれの上部供給口部で
外気に開放した通気部を有し、それぞれの下部吐
出口は、共通の外気連通型の冷媒循環液下部溜水
槽に接続してあることを特徴とする密閉型熱交換
器。[Claims for Utility Model Registration] A refrigerant circulating fluid is passed inside and water is sprinkled on the outside.
The heat exchanger is a closed type heat exchanger that cools the internal refrigerant circulating liquid by bringing this sprayed water into contact with the outside air, and this heat exchanger has a refrigerant circulating liquid passage formed between the mating surfaces of each flat plate. In the heat exchanger, each of the heat exchangers is a flat hollow body made of thin synthetic resin, and the synthetic resin plates forming both walls of the heat exchanger are arranged side by side. A curved refrigerant circulating fluid passage is formed between the pair of mating surfaces by welding, and each of these heat exchangers has a ventilation section that is open to the outside air at least at each upper supply port, and each lower part A closed type heat exchanger characterized in that a discharge port is connected to a common outside air communication type refrigerant circulating liquid lower storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986181728U JPH0449493Y2 (en) | 1986-11-26 | 1986-11-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986181728U JPH0449493Y2 (en) | 1986-11-26 | 1986-11-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6386563U JPS6386563U (en) | 1988-06-06 |
| JPH0449493Y2 true JPH0449493Y2 (en) | 1992-11-20 |
Family
ID=31126868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986181728U Expired JPH0449493Y2 (en) | 1986-11-26 | 1986-11-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449493Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2794027B2 (en) * | 1989-12-05 | 1998-09-03 | 株式会社荏原シンワ | cooling tower |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937573U (en) * | 1982-09-03 | 1984-03-09 | 三菱電機株式会社 | Radar transponder test equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5084845U (en) * | 1973-12-06 | 1975-07-19 |
-
1986
- 1986-11-26 JP JP1986181728U patent/JPH0449493Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937573U (en) * | 1982-09-03 | 1984-03-09 | 三菱電機株式会社 | Radar transponder test equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6386563U (en) | 1988-06-06 |
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