JPS634939Y2 - - Google Patents
Info
- Publication number
- JPS634939Y2 JPS634939Y2 JP1983050563U JP5056383U JPS634939Y2 JP S634939 Y2 JPS634939 Y2 JP S634939Y2 JP 1983050563 U JP1983050563 U JP 1983050563U JP 5056383 U JP5056383 U JP 5056383U JP S634939 Y2 JPS634939 Y2 JP S634939Y2
- Authority
- JP
- Japan
- Prior art keywords
- heat pump
- straight pipe
- pipe part
- corrosion
- pump chamber
- 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
- 238000001035 drying Methods 0.000 claims description 29
- 238000005260 corrosion Methods 0.000 claims description 21
- 230000007797 corrosion Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 8
- 238000005476 soldering Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 13
- 239000010935 stainless steel Substances 0.000 description 9
- 229910001220 stainless steel Inorganic materials 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案はヒートポンプを用いた乾燥装置に係
り、ヒートポンプの熱交換器の腐食防止構造に関
する。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a drying device using a heat pump, and more particularly to a corrosion prevention structure for a heat exchanger of a heat pump.
（従来の技術）
従来ヒートポンプを用いた乾燥装置を用いて腐
食性ガスが発生する汚泥等を乾燥する場合、密閉
乾燥室にヒートポンプの凝縮器と蒸発器が収容さ
れたヒートポンプ室を連通させ、ヒートポンプ室
で発生させた乾燥空気を乾燥室に導いて汚泥を乾
燥させ、吸湿した空気を乾燥室から再びヒートポ
ンプ室へ戻して除湿して再び循環させる方法が採
られていた。(Prior art) When drying sludge, etc. that generates corrosive gas using a drying device that uses a conventional heat pump, a heat pump chamber housing a heat pump condenser and an evaporator is connected to a closed drying chamber, and the heat pump The method used was to introduce dry air generated in the drying chamber to the drying chamber to dry the sludge, and then return the moisture-absorbed air from the drying chamber to the heat pump chamber, where it was dehumidified and circulated again.
（考案が解決しようとする問題点）
上述のように乾燥室とヒートポンプ室で空気を
循環させると汚泥から発生したアンモニア、硫化
水素等の腐食性ガスが循環空気とともに凝縮器や
蒸発器のコイルを形成する銅管と長時間接触する
ことになる。このため銅管の直管部に孔食を起
し、また、直管部の端部に接続したベンド部分や
管よせ部分と直管部とのロー付接続部に電食を起
し易く、このような腐食性ガスによる孔食を防ぐ
ために、銅管に代えてステンレス管を用いること
が考えられるが、ベンド部、その他の接続管部の
電食を防ぐためには、ベンド部その他もステンレ
ス管で製作し直管部と接続管部との接続部はアル
ゴン溶接しなければならない。しかしながらベン
ド部、入口細管、管よせ等の接続管部をステンレ
スで製作することおよびこれらをステンレス製直
管にアルゴン溶接することは工作上非常にむずか
しいという問題がある。(Problem to be solved by the invention) As mentioned above, when air is circulated in the drying room and heat pump room, corrosive gases such as ammonia and hydrogen sulfide generated from the sludge can flow together with the circulating air into the coils of the condenser and evaporator. There will be prolonged contact with the copper tube being formed. For this reason, pitting corrosion occurs in the straight pipe section of the copper pipe, and electrolytic corrosion easily occurs at the bend part connected to the end of the straight pipe part and the brazed connection between the pipe bend part and the straight pipe part. In order to prevent pitting corrosion caused by such corrosive gases, it is possible to use stainless steel pipes instead of copper pipes, but in order to prevent electrical corrosion at bends and other connecting pipe parts, it is recommended to use stainless steel pipes at bends and other connecting pipe parts. The connection between the straight pipe section and the connecting pipe section must be argon welded. However, there is a problem in that it is extremely difficult to manufacture the connecting pipe parts such as the bend part, the inlet tube, and the pipe bending from stainless steel, and to weld these parts to the stainless steel straight pipe with argon.
本考案の目的は上述の問題点に鑑み、密閉乾燥
室に連通し乾燥室との間で空気を循環させるヒー
トポンプ室に設けた凝縮器と蒸発器のコイルの直
管部が腐食性ガスとの接触により孔食されないよ
うにし、またコイルの直管部の端部に接続した接
続管部がステンレス管の場合にも腐食性ガスによ
る鑞着部の電食を防止できるヒートポンプを用い
た乾燥装置を提供しようとするものである。 The purpose of this invention was to solve the above-mentioned problems by preventing corrosive gas from forming in the straight pipes of the condenser and evaporator coils installed in the heat pump chamber, which communicates with the closed drying chamber and circulates air between the drying chamber and the heat pump chamber. We use a drying device that uses a heat pump to prevent pitting corrosion due to contact, and to prevent electrolytic corrosion of the soldered parts due to corrosive gas even if the connecting pipe connected to the end of the straight pipe part of the coil is a stainless steel pipe. This is what we are trying to provide.
〔考案の構成〕
（問題点を解決するための手段）
本考案のヒートポンプを用いた乾燥装置は、密
封乾燥室と、この密封乾燥室に吸気口と送気口で
連通して空気を循環させるヒートポンプ室とより
なり、このヒートポンプ室に設けられた凝縮器と
蒸発器のそれぞれのコイルを耐蝕性材料よりなる
直管部とこの直管部の両端に鑞着によつて接続さ
れた接続管部とより形成し、前記ヒートポンプ室
の相対する内面と間隙を介して設けられた管板と
この管板とヒートポンプ室間の間隙を気密に囲む
周囲板部とよりなる囲壁内に、前記管板より前記
コイルの直管部の両端を気密に突出するとともに
前記コイルの直管部の端部と接続された接続管部
とを配設してなるものである。[Structure of the invention] (Means for solving the problems) The drying device using the heat pump of the invention has a sealed drying chamber, and the sealed drying chamber is connected to the sealed drying chamber through an intake port and an air supply port to circulate air. The coils of the condenser and evaporator installed in the heat pump chamber are connected to a straight pipe section made of a corrosion-resistant material and a connecting pipe section connected to both ends of the straight pipe section by soldering. and a tube sheet provided with a gap between the opposing inner surfaces of the heat pump chamber, and a surrounding plate part that airtightly surrounds the gap between the tube sheet and the heat pump chamber. Both ends of the straight tube portion of the coil protrude airtightly, and a connecting tube portion connected to the ends of the straight tube portion of the coil is provided.
（作 用）
本考案のヒートポンプを用いた乾燥装置は、腐
食性ガスを含む空気がヒートポンプ室内を流通す
るとき、熱交換部分となる耐食性材料で形成され
たコイルの直管部は、腐食性ガスによつて腐食さ
れることがない。また、囲壁で囲まれた接続管部
は、流通する腐食性ガスと遮断されているから、
加工性が良く耐腐食性の低い材料を用いても腐食
されることがない。(Function) In the drying device using the heat pump of the present invention, when air containing corrosive gas flows inside the heat pump chamber, the straight pipe part of the coil made of a corrosion-resistant material, which serves as the heat exchange part, absorbs the corrosive gas. It will not be corroded by corrosion. In addition, since the connecting pipe section surrounded by an enclosure wall is cut off from the circulating corrosive gas,
It has good workability and will not be corroded even when using materials with low corrosion resistance.
（実施例）
次に本考案の一実施例の構成を図面について説
明する。(Embodiment) Next, the configuration of an embodiment of the present invention will be described with reference to the drawings.
１は密封乾燥室で、断熱壁２２で囲まれて形成
され内部には多数段の図示されないベルトコンベ
ヤが敷設され上段から下段へと被乾燥物を移送し
つつ乾燥するように構成されている。 Reference numeral 1 denotes a sealed drying chamber, which is surrounded by a heat insulating wall 22, and is configured to have multiple stages of belt conveyors (not shown) installed inside to dry the materials while transporting them from the upper stage to the lower stage.
２はヒートポンプ室で、乾燥室１の一側に仕切
壁２３で区画されて形成され上下に乾燥室１と連
通する送気口３と吸気口４が形成され、このヒー
トポンプ室２の送気口３側に臨ませて送風機５が
設けられている。またこのヒートポンプ室２内に
はヒートポンプの凝縮器６と蒸発器７が設けら
れ、圧縮機８、補助凝縮器９、凝縮器６、膨脹弁
１０、蒸発器７とでヒートポンプサイクルを構成
している。またヒートポンプ室２の蒸発器７の下
方には水受皿１１が設けられ水受皿１１より排水
管１２が外部へ導出されている。 Reference numeral 2 designates a heat pump chamber, which is partitioned by a partition wall 23 on one side of the drying chamber 1 and has an air supply port 3 and an intake port 4 that communicate with the drying chamber 1 above and below. A blower 5 is provided facing the third side. Further, a heat pump condenser 6 and an evaporator 7 are provided in the heat pump chamber 2, and a compressor 8, an auxiliary condenser 9, a condenser 6, an expansion valve 10, and an evaporator 7 constitute a heat pump cycle. . Further, a water tray 11 is provided below the evaporator 7 in the heat pump chamber 2, and a drain pipe 12 is led out from the water tray 11.
また、凝縮器６と蒸発器７を構成するそれぞれ
のコイル１３は、耐腐食性材料よりなる多数のス
テンレス管よりなる直管部１４と、この直管部１
４の両端に鑞着によつて接続されたベンド部分１
５ａ、ヘツダー部分１５ｂ、入口細管１５ｃ等の
接続管部１５よりなり、接続管部１５はステンレ
ス管または加工が容易な銅管、銅合金管で形成さ
れている。また、前記コイル１３の直管部１４に
は多数のアルミニウム板よりなるフイン１６が設
けられ、さらにこの直管部１４の両端は亜鉛引鋼
板よりなる囲壁１７の一部となるヒートポンプ室
２の内壁と平行な管板１７ａの嵌合孔１８より20
mm〜50mm突出され、この直管部１４と嵌合孔１８
はすき間なく気密に嵌合され或はハンダ付け、シ
リコン樹脂コーテイング等の方法によつて密封さ
れている。そしてこの管板１７ａから突出した直
管部１４に接続管部１５が鑞着による鑞着部２０
によつて気密に接続される。また前記管板１７ａ
の上下左右の周囲板部１７ｂ，１７ｃは接続管部
１５を囲むようにしてヒートポンプ室２の断熱壁
２２の内壁に向つて屈曲され、断熱壁２２の内面
に固定され、接続管部１５を囲繞してヒートポン
プ室２内の雰囲気と遮断された密閉室２１を形成
する囲壁１７を構成している。 Further, each coil 13 constituting the condenser 6 and the evaporator 7 includes a straight pipe portion 14 made of a large number of stainless steel pipes made of a corrosion-resistant material, and a straight pipe portion 14 made of a large number of stainless steel pipes made of a corrosion-resistant material.
Bend part 1 connected to both ends of 4 by soldering
5a, a header portion 15b, and an inlet thin tube 15c, the connecting tube portion 15 is formed of a stainless steel tube or an easily machined copper tube or copper alloy tube. Further, the straight pipe portion 14 of the coil 13 is provided with a number of fins 16 made of aluminum plates, and both ends of the straight pipe portion 14 are connected to the inner wall of the heat pump chamber 2, which forms part of the surrounding wall 17 made of a galvanized steel plate. 20 from the fitting hole 18 of the tube plate 17a parallel to
mm to 50 mm, and this straight pipe part 14 and the fitting hole 18
They are hermetically fitted without gaps or sealed by soldering, silicone resin coating, or the like. The connecting pipe part 15 is soldered to the straight pipe part 14 protruding from the tube plate 17a to form a soldered part 20.
Connected airtightly. Further, the tube plate 17a
The upper, lower, left and right surrounding plate parts 17b and 17c are bent toward the inner wall of the heat insulating wall 22 of the heat pump chamber 2 so as to surround the connecting pipe part 15, and are fixed to the inner surface of the heat insulating wall 22, so as to surround the connecting pipe part 15. A surrounding wall 17 forms a sealed chamber 21 that is isolated from the atmosphere inside the heat pump chamber 2.
次に上述の実施例の作用を説明する。 Next, the operation of the above embodiment will be explained.
密封乾燥室１内には生活廃水や産業排水の水処
理によつて生じた汚泥が供給され図示されないコ
ンベヤによつて上段から漸次下段へ送られながら
乾燥されて導出される。またヒートポンプ室２で
は、圧縮機８、凝縮器６、膨脹弁１０、蒸発器７
よりなるヒートポンプの運転により、吸気口４か
ら吸入された乾燥室１の吸湿空気が蒸発器７と接
触して水分を除去され、次に凝縮器６で加温され
て相対湿度を低下し、乾燥空気は送気口３より再
び乾燥室１に送られる。このようにして乾燥室１
で吸湿した空気がヒートポンプ室２で除湿されて
循環する際、汚泥中に含まれるアンモニヤガスや
硫化水素ガスが循環空気とともに凝縮器６や蒸発
器７に接触するがこれらのコイル１３の直管部１
４は耐腐食性のステンレス管で形成されているた
め、腐食のおそれがない。またアルミニウム板製
のフイン１６も腐食のおそれはない。さらに、ベ
ンド部１５ａ、ヘツダー部１５ｂ、入口細管１５
ｃ等の接続管部１５およびこの接続管部１５と直
管部１４との鑞着部２０は囲壁１７に囲まれて腐
食性ガスが循環するヒートポンプ室２内の雰囲気
と遮断されているから、腐食性ガスと接触するこ
とがなく、孔食や電食されることがない。 Sludge produced by water treatment of domestic wastewater and industrial wastewater is supplied into the sealed drying chamber 1, and is gradually conveyed from the upper stage to the lower stage by a conveyor (not shown), where it is dried and discharged. In addition, in the heat pump room 2, a compressor 8, a condenser 6, an expansion valve 10, an evaporator 7
Due to the operation of the heat pump, the moisture-absorbing air in the drying chamber 1 that is sucked in through the intake port 4 comes into contact with the evaporator 7 to remove moisture, and then is heated in the condenser 6 to lower the relative humidity and dry. Air is sent to the drying chamber 1 again through the air supply port 3. In this way, drying chamber 1
When the air that has absorbed moisture is dehumidified and circulated in the heat pump chamber 2, ammonia gas and hydrogen sulfide gas contained in the sludge come into contact with the condenser 6 and evaporator 7 together with the circulating air, but the straight pipe portions of these coils 13 1
4 is made of a corrosion-resistant stainless steel tube, so there is no risk of corrosion. Furthermore, there is no risk of corrosion of the fins 16 made of aluminum plates. Further, a bend portion 15a, a header portion 15b, an inlet capillary 15
The connecting pipe portion 15 such as C and the soldered portion 20 between the connecting pipe portion 15 and the straight pipe portion 14 are surrounded by the surrounding wall 17 and are cut off from the atmosphere in the heat pump chamber 2 in which corrosive gas circulates. No contact with corrosive gases, no pitting or electrolytic corrosion.
本考案によれば、乾燥室で発生した腐食性ガス
を含む空気がヒートポンプ室に導入されて凝縮器
や蒸発器と接触した場合直接熱交換されるコイル
の直管部は耐腐食性材料よりなるため孔食や電食
が発生するおそれがなく、また直管部の両端は管
板より囲壁内に気密に突出し、直管部の両端に接
続された接続管部やその鑞着部は囲壁で気密に囲
まれてヒートポンプ室雰囲気と遮断されているか
ら腐食性ガスと接触することがなく鑞着部に電食
が発生したり、接続管部を加工が容易な銅管や銅
合金管で形成した場合も孔食のおそれがなく、長
期間安全に運転することができる。また、管板
は、囲枠の一部として多数の直管部の両端を気密
に支持するとともにコイルの両端を保持しヒート
ポンプ室に装着前に行われる接続管部の鑞着作業
を容易に確実に行うことができる。
According to the present invention, when air containing corrosive gas generated in the drying room is introduced into the heat pump room and comes into contact with the condenser or evaporator, the straight pipe part of the coil that directly exchanges heat is made of corrosion-resistant material. Therefore, there is no risk of pitting or electrical corrosion, and both ends of the straight pipe protrude airtight from the tube plate into the surrounding wall, and the connecting pipes connected to both ends of the straight pipe and their brazed parts are protected from the surrounding wall. Because it is airtightly surrounded and isolated from the heat pump room atmosphere, it does not come into contact with corrosive gases, preventing electrolytic corrosion from occurring on the soldered parts, and connecting pipes are made of easy-to-process copper pipes or copper alloy pipes. Even if it does, there is no risk of pitting corrosion, and it can be operated safely for a long period of time. In addition, the tube plate airtightly supports both ends of a large number of straight pipes as part of the surrounding frame, and also holds both ends of the coil, making it easy and reliable to solder the connecting pipes before installing them in the heat pump room. can be done.
第１図は本考案の一実施例を示すヒートポンプ
を用いた乾燥装置の正面図、第２図は同上Ａ−Ａ
線断面図、第３図は第１図のＢ−Ｂ線断面図であ
る。
１……密封乾燥室、２……ヒートポンプ室、３
……送気口、４……吸気口、６……凝縮器、７…
…蒸発器、１３……コイル、１４……直管部、１
５……接続管部、１７……囲壁、１７ａ……管
板、１７ｂ，１７ｃ……周囲板部。
Fig. 1 is a front view of a drying device using a heat pump showing one embodiment of the present invention, and Fig. 2 is the same as A-A.
3 is a sectional view taken along the line B--B in FIG. 1. 1... Sealed drying room, 2... Heat pump room, 3
...Air supply port, 4...Intake port, 6...Condenser, 7...
...Evaporator, 13...Coil, 14...Straight pipe section, 1
5... Connecting pipe portion, 17... Surrounding wall, 17a... Tube plate, 17b, 17c... Surrounding plate portion.
Claims (1)
口で連通して空気を循環させるヒートポンプ室と
よりなり、このヒートポンプ室に設けられた凝縮
器と蒸発器のそれぞれのコイルを耐蝕性材料より
なる直管部とこの直管部の両端に鑞着によつて接
続された接続管部とより形成し、前記ヒートポン
プ室の相対する内面と間隙を介して設けられた管
板とこの管板とヒートポンプ室間の間隙を気密に
囲む周囲板部とよりなる囲壁内に、前記管板より
前記コイルの直管部の両端を気密に突出するとと
もに前記コイルの直管部の端部と接続された接続
管部とを配設してなることを特徴とするヒートポ
ンプを用いた乾燥装置。 It consists of a sealed drying room and a heat pump room that communicates with this sealed drying room through an intake port and an air supply port to circulate air.The coils of the condenser and evaporator installed in this heat pump room are made of corrosion-resistant material. a tube plate formed of a straight pipe part and a connecting pipe part connected to both ends of the straight pipe part by soldering, and provided with a gap between the opposing inner surface of the heat pump chamber; and this tube plate. and a peripheral plate part that airtightly encloses the gap between the heat pump chamber and the heat pump chamber, in which both ends of the straight pipe part of the coil protrude airtightly from the tube plate and are connected to the ends of the straight pipe part of the coil. A drying device using a heat pump, characterized in that a connecting pipe section is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5056383U JPS59155491U (en) | 1983-04-05 | 1983-04-05 | Drying equipment using heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5056383U JPS59155491U (en) | 1983-04-05 | 1983-04-05 | Drying equipment using heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59155491U JPS59155491U (en) | 1984-10-18 |
| JPS634939Y2 true JPS634939Y2 (en) | 1988-02-09 |
Family
ID=30181020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5056383U Granted JPS59155491U (en) | 1983-04-05 | 1983-04-05 | Drying equipment using heat pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59155491U (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467381U (en) * | 1977-10-20 | 1979-05-12 |
-
1983
- 1983-04-05 JP JP5056383U patent/JPS59155491U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59155491U (en) | 1984-10-18 |
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