JP2012072936A - Heat exchanger for coolant chiller - Google Patents

Heat exchanger for coolant chiller Download PDF

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JP2012072936A
JP2012072936A JP2010216518A JP2010216518A JP2012072936A JP 2012072936 A JP2012072936 A JP 2012072936A JP 2010216518 A JP2010216518 A JP 2010216518A JP 2010216518 A JP2010216518 A JP 2010216518A JP 2012072936 A JP2012072936 A JP 2012072936A
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shell
heat exchanger
coolant
dividing
end surface
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JP5586057B2 (en
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Haruto Takamizawa
玄人 高見澤
Michiro Higashikata
巳治郎 東方
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Orion Machinery Co Ltd
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Orion Machinery Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To achieve easy and sufficient cleaning, to reduce man-hour and work time for cleaning, and to secure advantages in resource saving and cost.SOLUTION: The heat exchanger for coolant chiller 1 includes: a shell part 2 constituted in a cylindrical shape having an upper end surface part 2u and a lower end surface part 2d, and forming a flow passage of a coolant Lc; and a coil tube part 3 stored in the shell part 2, and forming the flow passage of a cooling medium Km. The heat exchanger is provided with a division part Pc for dividing the shell part 2 into a first shell division part 4 and a second shell division part 5 in an axial direction Fs between the center portion Xc and the lower end surface part 2d in the axial direction Fs of the shell part 2. The division part Pc can be detached and attached by a detaching/attaching means 6. A liquid inflow port 2i and a liquid outflow port 2e with respect to the shell part 2, and a cooling medium inflow ports 3i and a cooling medium outflow ports 3e with respect to the coil tube part 3 are arranged in the first shell division part 4.

Description

本発明は、クーラント液の流通路となるシェル部とこのシェル部に収容することにより冷媒の流通路となるコイル管部を備えるクーラントチラー用熱交換器に関する。   The present invention relates to a heat exchanger for a coolant chiller including a shell portion serving as a coolant flow passage and a coil tube portion serving as a coolant flow passage by being accommodated in the shell portion.

従来、基本構成として、上端面部及び下端面部を有する円筒形に構成し、かつ被冷却液の流通路を形成するシェル部と、このシェル部の内部に収容し、かつ冷媒の流通路を形成するコイル管部を備えた熱交換器であって、特に、被冷却液が比較的高い圧力により送られる環境において使用される熱交換器としては、特許文献1で開示される熱交換器が知られている。   Conventionally, as a basic configuration, a cylindrical portion having an upper end surface portion and a lower end surface portion is formed, and a shell portion that forms a flow passage for a liquid to be cooled, and a refrigerant flow passage that is accommodated in the shell portion and formed therein. As a heat exchanger provided with a coil tube portion and used in an environment in which a liquid to be cooled is sent at a relatively high pressure, a heat exchanger disclosed in Patent Document 1 is known. ing.

同文献1に開示される熱交換器は、当該熱交換器を大きく形成することなく熱通過率を高い値で安定させることを目的としたものであり、ケース及びその内側に配置された入口管からなる二重管により油通路が形成され、該油通路の内部に冷媒通路を形成するコイル状のローフィンチューブが装着されたシェルアンドコイル型の油冷却器であって、該ローフィンチューブとの旋回ピッチが、チューブ外径の1.3〜2.0倍に形成された構成を備えている。   The heat exchanger disclosed in Patent Document 1 is intended to stabilize the heat transfer rate at a high value without forming the heat exchanger large, and a case and an inlet pipe disposed inside the case. A shell-and-coil type oil cooler, in which an oil passage is formed by a double pipe comprising: a coiled low fin tube that forms a refrigerant passage inside the oil passage; Is provided with a configuration in which the swivel pitch is 1.3 to 2.0 times the tube outer diameter.

実開平1−170875号公報Japanese Utility Model Publication No. 1-170875

ところで、上述した特許文献1で開示される流動抵抗の高い油(被冷却液)の冷却を行う熱交換器のように、一般に被冷却液が比較的高い液圧環境で使用される熱交換器では、当該熱交換器の耐圧性を十分に確保する必要がある。   By the way, a heat exchanger generally used in a hydraulic environment in which the liquid to be cooled is relatively high, such as a heat exchanger that cools oil (liquid to be cooled) having high flow resistance disclosed in Patent Document 1 described above. Then, it is necessary to ensure sufficient pressure resistance of the heat exchanger.

例えば、工作機械によりワークを加工する場合、発熱するワークに対して冷却されたクーラント液を放出して当該ワークの冷却を行っている。この際、クーラント液は工作機械に対して別途設置するクーラントチラーにより冷却を行うため、クーラント液の流通経路が長くなる傾向があるとともに、クーラント液は循環使用するため、フィルタ等によるフィルタリングを行ったとしても完全には除去されない微細な切粉等によって徐々に汚れてしまう。したがって、この種のクーラントチラーでは、クーラント液を循環させる液圧を通常、0.5〜0.6〔MPa〕程度の高圧に設定することにより、流動抵抗に対抗させ、更に汚れによる管詰まり等の不具合の発生を防止しているとともに、ケース(シェル部)及びローフィンチューブ(コイル管部)を含む熱交換器全体の構成を一体構造とすることにより十分な密閉性及び耐圧性を確保していた。   For example, when a workpiece is machined with a machine tool, the cooled coolant is discharged to the workpiece that generates heat to cool the workpiece. At this time, since the coolant is cooled by a coolant chiller separately installed on the machine tool, the coolant flow tends to be long, and the coolant is circulated and filtered using a filter or the like. However, it is gradually soiled by fine chips that are not completely removed. Therefore, in this type of coolant chiller, the fluid pressure for circulating the coolant liquid is usually set to a high pressure of about 0.5 to 0.6 [MPa] to counteract the flow resistance, and further, tube clogging due to dirt, etc. In addition to preventing the occurrence of malfunctions, the entire heat exchanger including the case (shell part) and the low fin tube (coil pipe part) has an integrated structure to ensure sufficient sealing and pressure resistance. It was.

しかし、被冷却液が比較的高い液圧環境で使用される従来の熱交換器は、一体構造とする故に、次のような固有の問題点も存在した。   However, since the conventional heat exchanger used in a hydraulic environment where the liquid to be cooled is relatively high has an integral structure, the following inherent problems exist.

第一に、クーラント液の汚れ、即ち、切粉等による汚れは、特に、熱交換器における複雑な形状のローフィンチューブ(コイル管部)の隙間等に堆積しやすいため、そのまま放置した場合には、熱交換効率の低下や流動抵抗の更なる増加を招く不具合を生じる。したがって、定期的に又は使用環境により汚れがひどいときには、熱交換器の洗浄を行う必要があるが、従来は、熱交換器から被冷却液を一旦抜き取り、この後、熱交換器に洗浄液を循環させて洗浄せざるを得ないため、洗浄に係わる工数増加及び長時間化が強いられ、しかも十分な洗浄を行うことができなかった。   First, the contamination of the coolant, that is, contamination by chips, etc., is particularly likely to accumulate in the gaps of complex shaped low fin tubes (coil tube sections) in heat exchangers, so when left as it is Causes problems such as a decrease in heat exchange efficiency and a further increase in flow resistance. Therefore, it is necessary to clean the heat exchanger regularly or when the dirt is severe due to the usage environment. Conventionally, the liquid to be cooled is once extracted from the heat exchanger, and then the cleaning liquid is circulated through the heat exchanger. Therefore, the number of man-hours and time required for cleaning are increased, and sufficient cleaning cannot be performed.

第二に、被冷却液が比較的高い液圧環境で使用される熱交換器は、十分な密閉性及び耐圧性を確保する必要があるため、通常、ケース(シェル部)及びローフィンチューブ(コイル管部)を含む全体が一体化された一台のユニットとして構成されている。したがって、熱交換器が故障や寿命等により使用不能になった場合、ユニット全体を交換する必要があるなど、資源節減面及びコスト面において難があった。   Secondly, since a heat exchanger used in a liquid pressure environment where the liquid to be cooled is relatively high needs to ensure sufficient hermeticity and pressure resistance, usually a case (shell part) and a low fin tube ( The entire structure including the coil tube portion is configured as a single unit. Therefore, when the heat exchanger becomes unusable due to a failure or a lifetime, there is a problem in terms of resource saving and cost, such as the need to replace the entire unit.

本発明は、このような背景技術に存在する課題を解決したクーラントチラー用熱交換器の提供を目的とするものである。   The object of the present invention is to provide a heat exchanger for a coolant chiller that solves the problems existing in the background art.

本発明は、上述した課題を解決するため、上端面部2u及び下端面部2dを有する円筒形に構成し、かつクーラント液Lcの流通路を形成するシェル部2と、このシェル部2の内部に収容し、かつ冷媒Kmの流通路を形成するコイル管部3とを備えてなるクーラントチラー用熱交換器1を構成するに際して、シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsの第一シェル分割部4と第二シェル分割部5に分割する分割部Pcを設け、この分割部Pcを着脱手段6により着脱可能に構成するとともに、第一シェル分割部4に、シェル部2に対する液流入口2iと液流出口2e及びコイル管部3に対する冷媒流入口3i…と冷媒流出口3e…を配設してなることを特徴とする。   In order to solve the above-described problems, the present invention is configured in a cylindrical shape having an upper end surface portion 2u and a lower end surface portion 2d, and forms a flow path for the coolant liquid Lc, and accommodated in the shell portion 2 In addition, when configuring the coolant chiller heat exchanger 1 including the coil tube portion 3 that forms the flow path of the refrigerant Km, between the central portion Xc and the lower end surface portion 2d in the axial direction Fs of the shell portion 2. A split part Pc is provided to divide the shell part 2 into a first shell split part 4 and a second shell split part 5 in the axial direction Fs. The part 4 is provided with a liquid inlet 2i and a liquid outlet 2e for the shell part 2, and a refrigerant inlet 3i and a refrigerant outlet 3e for the coil pipe part 3.

この場合、発明の好適な態様により、コイル管部3は、第一シェル分割部4からシェル部2の内部外周側Xfに配して上端面部2uの近傍に至る外側コイル半部7と、この外側コイル半部7の上端から折返し、シェル部2の内部中心側Xiに配して第一シェル分割部4に至る内側コイル半部8とを備えて構成できる。また、シェル部2は、第一シェル分割部4から軸方向Fs上方に突出し、かつ外側コイル半部7と内側コイル半部8間に介在するとともに、上端面部2uの近傍に至る円筒形の流通路仕切部9を備え、液流入口2i又は液流出口2eの一方を流通路仕切部9の外側に臨ませ、かつ他方を流通路仕切部9の内側に臨ませることができる。さらに、第一シェル分割部4は、下端面部2dのみにより構成することができる。なお、熱交換器1は、第一シェル分割部4を第二シェル分割部5に対して下側に位置させる第一設置態様Ms又はこの第一設置態様Msに対して上下を反転させることにより第一シェル分割部4を第二シェル分割部5に対して上側に位置させる第二設置態様Mn可能に構成できる。一方、着脱手段6は、第一シェル分割部4又は第二シェル分割部5の一方に装着部11を設け、かつ他方に被装着部12を設けることにより、第一シェル分割部4と第二シェル分割部5を直接着脱可能に構成してもよいし、或いは第一シェル分割部4と第二シェル分割部5に対して着脱し、装着時には第一シェル分割部4と第二シェル分割部5間に跨がることにより第一シェル分割部4と第二シェル分割部5を固定可能な別体の着脱具13を備えて構成してもよい。他方、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3を直接洗浄する洗浄手段14を備えて構成してもよいし、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3の洗浄を補助する洗浄補助手段15を備えて構成してもよい。   In this case, according to a preferred aspect of the invention, the coil tube portion 3 includes the outer coil half portion 7 arranged from the first shell dividing portion 4 to the inner outer peripheral side Xf of the shell portion 2 and reaching the vicinity of the upper end surface portion 2u, The inner coil half portion 8 is folded back from the upper end of the outer coil half portion 7 and arranged on the inner center side Xi of the shell portion 2 so as to reach the first shell dividing portion 4. The shell portion 2 protrudes upward in the axial direction Fs from the first shell dividing portion 4 and is interposed between the outer coil half portion 7 and the inner coil half portion 8 and also has a cylindrical flow extending to the vicinity of the upper end surface portion 2u. The passage partition 9 is provided, and one of the liquid inlet 2 i and the liquid outlet 2 e can face the outside of the flow passage partition 9 and the other can face the inside of the flow passage partition 9. Furthermore, the 1st shell division part 4 can be comprised only by the lower end surface part 2d. In addition, the heat exchanger 1 reverses upside down with respect to the 1st installation mode Ms which positions the 1st shell division part 4 below with respect to the 2nd shell division part 5, or this 1st installation mode Ms. It can comprise so that the 2nd installation aspect Mn which positions the 1st shell division part 4 above the 2nd shell division part 5 is possible. On the other hand, the attaching / detaching means 6 is provided with the mounting portion 11 on one of the first shell dividing portion 4 or the second shell dividing portion 5 and the mounted portion 12 on the other side, whereby the first shell dividing portion 4 and the second shell dividing portion 4 are provided. The shell dividing portion 5 may be configured to be directly attachable / detachable, or may be attached to and detached from the first shell dividing portion 4 and the second shell dividing portion 5, and the first shell dividing portion 4 and the second shell dividing portion may be attached when being attached. You may comprise the separate attachment / detachment tool 13 which can fix the 1st shell division part 4 and the 2nd shell division part 5 by straddling between 5. FIG. On the other hand, it may be configured to include a cleaning means 14 that is attached to and detached from the first shell dividing portion 4 instead of the second shell dividing portion 5 and directly cleans the coil tube portion 3 when the first shell dividing portion 4 is attached. Instead of the second shell division portion 5, the shell division portion 4 may be provided with a cleaning auxiliary means 15 that assists in cleaning the coil tube portion 3 when attached.

このような構成を有する本発明に係るクーラントチラー用熱交換器1によれば、次のような顕著な効果を奏する。   According to the heat exchanger 1 for a coolant chiller 1 according to the present invention having such a configuration, the following remarkable effects can be obtained.

(1) シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsの第一シェル分割部4と第二シェル分割部5に分割する分割部Pcを設け、この分割部Pcを着脱手段6により着脱可能に構成するとともに、第一シェル分割部4に、シェル部2に対する液流入口2iと液流出口2e及びコイル管部3に対する冷媒流入口3i…と冷媒流出口3e…を配設したため、熱交換器1の内部を洗浄する際には、第一シェル分割部4から第二シェル分割部5を離脱すればよく、これにより、切粉等の汚れが堆積しやすい複雑な形状のコイル管部3等であっても容易に洗浄することが可能となり、洗浄に係わる工数低減及び作業時間の短縮を図れるとともに、十分かつ確実な洗浄を行うことができる。   (1) A split portion Pc that splits the shell portion 2 into a first shell split portion 4 and a second shell split portion 5 in the axial direction Fs is provided between the central portion Xc in the axial direction Fs of the shell portion 2 and the lower end surface portion 2d. The split part Pc is configured to be attachable / detachable by the attaching / detaching means 6, and the first shell split part 4 includes a liquid inlet 2 i for the shell part 2, a liquid outlet 2 e, and a refrigerant inlet 3 i for the coil pipe part 3. Since the refrigerant outlets 3e are disposed, when the inside of the heat exchanger 1 is cleaned, the second shell divided portion 5 may be detached from the first shell divided portion 4, thereby causing dirt such as chips. It is possible to easily clean even the complicatedly shaped coil tube portion 3 and the like that easily accumulate, reducing man-hours related to cleaning and shortening the work time, and sufficient and reliable cleaning can be performed. .

(2) シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsの第一シェル分割部4と第二シェル分割部5に分割する分割部Pcを設け、この分割部Pcを着脱手段6により着脱可能に構成したため、熱交換器1のメンテナンスも容易に行うことができるとともに、故障や寿命等により熱交換器1の使用が不能になった場合であっても、一部の部品交換、即ち、第一シェル分割部4又は第二シェル分割部5のいずれか一方を交換すれば足りるため、資源節減面及びコスト面における有利性を確保できる。   (2) A split portion Pc that splits the shell portion 2 into a first shell split portion 4 and a second shell split portion 5 in the axial direction Fs is provided between the central portion Xc in the axial direction Fs of the shell portion 2 and the lower end surface portion 2d. Since the split part Pc is configured to be detachable by the attaching / detaching means 6, the heat exchanger 1 can be easily maintained, and the heat exchanger 1 cannot be used due to a failure or a lifespan. However, since it is sufficient to replace some parts, that is, one of the first shell division part 4 and the second shell division part 5, it is possible to secure advantages in terms of resource saving and cost.

(3) 好適な態様により、コイル管部3を、第一シェル分割部4からシェル部2の内部外周側Xfに配して上端面部2uの近傍に至る外側コイル半部7と、この外側コイル半部7の上端から折返し、シェル部2の内部中心側Xiに配して第一シェル分割部4に至る内側コイル半部8とを備えて構成すれば、コイル管部3の全長をシェル部2の筒長のほぼ二倍にできるため、熱交換面積もほぼ二倍にでき、もって、熱の交換効率を飛躍的に高めることができる。この場合、シェル部2の内部のコイル管部3の密度が二倍になり、切粉等の汚れがより堆積しやすくなるが、シェル部2は第一シェル分割部4から第二シェル分割部5を離脱して洗浄可能なため、特に、本発明はこのような熱交換器1の実施態様に適用して最適となる。   (3) According to a preferred embodiment, the coil tube portion 3 is arranged from the first shell dividing portion 4 to the inner outer peripheral side Xf of the shell portion 2 to reach the vicinity of the upper end surface portion 2u, and the outer coil If the inner coil half portion 8 is folded back from the upper end of the half portion 7 and arranged on the inner center side Xi of the shell portion 2 to reach the first shell dividing portion 4, the entire length of the coil tube portion 3 can be increased. Therefore, the heat exchange area can be almost doubled, so that the heat exchange efficiency can be dramatically increased. In this case, the density of the coil tube portion 3 inside the shell portion 2 is doubled, and dirt such as chips is more likely to accumulate, but the shell portion 2 is changed from the first shell divided portion 4 to the second shell divided portion. In particular, the present invention is optimally applied to such an embodiment of the heat exchanger 1 because it can be removed and cleaned.

(4) 好適な態様により、シェル部2に、第一シェル分割部4から軸方向Fs上方に突出し、かつ外側コイル半部7と内側コイル半部8間に介在するとともに、上端面部2uの近傍に至る円筒形の流通路仕切部9を備え、液流入口2i又は液流出口2eの一方を流通路仕切部9の外側に臨ませ、かつ他方を流通路仕切部9の内側に臨ませて構成すれば、シェル部2の内部におけるクーラント液Lcの流通路の長さをほぼ二倍にできるため、より効率的な熱交換を行うことができるとともに、流通路の形状が複雑になっても、シェル部2は第一シェル分割部4から第二シェル分割部5を離脱可能なため、容易に洗浄することができる。   (4) According to a preferred embodiment, the shell portion 2 protrudes upward in the axial direction Fs from the first shell dividing portion 4 and is interposed between the outer coil half portion 7 and the inner coil half portion 8 and in the vicinity of the upper end surface portion 2u. The liquid flow inlet 2i or the liquid flow outlet 2e faces the outside of the flow passage partition 9, and the other faces the inside of the flow passage partition 9. If configured, the length of the flow path of the coolant Lc inside the shell portion 2 can be almost doubled, so that more efficient heat exchange can be performed and even if the shape of the flow path becomes complicated The shell portion 2 can be easily cleaned because the second shell divided portion 5 can be detached from the first shell divided portion 4.

(5) 好適な態様により、第一シェル分割部4を、下端面部2dのみにより構成すれば、第一シェル分割部4の形状は平坦状の円板になるため、コイル管部3の側方が開放され、コイル管部3の洗浄をより容易かつ確実に行うことができる。   (5) If the first shell divided portion 4 is constituted only by the lower end surface portion 2d according to a preferred embodiment, the shape of the first shell divided portion 4 is a flat disk, so that the side of the coil tube portion 3 is Is opened, and the coil tube portion 3 can be cleaned more easily and reliably.

(6) 好適な態様により、熱交換器1を、第一シェル分割部4を第二シェル分割部5に対して下側に位置させる第一設置態様Ms又はこの第一設置態様Msに対して上下を反転させることにより第一シェル分割部4を第二シェル分割部5に対して上側に位置させる第二設置態様Mn可能に構成すれば、液流入口2iと液流出口2e及び冷媒流入口3i…と冷媒流出口3e…を上側に配するか下側に配するかの選択ができるため、設計自由度を高めることができ、更なる小型化の実現に寄与できるとともに、特に、第二設置態様Mnを選択すれば、洗浄時に、洗浄液が第一シェル分割部4に溜まることがないため、洗浄作業をより円滑に行うことができる。   (6) According to a preferred embodiment, the heat exchanger 1 is arranged with respect to the first installation mode Ms or the first installation mode Ms in which the first shell divided part 4 is positioned below the second shell divided part 5. If the second installation mode Mn in which the first shell dividing portion 4 is positioned on the upper side with respect to the second shell dividing portion 5 by reversing the upper and lower sides is configured, the liquid inlet 2i, the liquid outlet 2e, and the refrigerant inlet 3i and the refrigerant outlets 3e can be selected to be arranged on the upper side or the lower side, so that the degree of freedom in design can be increased, contributing to the realization of further downsizing. If the installation mode Mn is selected, since the cleaning liquid does not accumulate in the first shell dividing portion 4 during cleaning, the cleaning operation can be performed more smoothly.

(7) 好適な態様により、着脱手段6を構成するに際し、第一シェル分割部4又は第二シェル分割部5の一方に装着部11を設け、かつ他方に被装着部12を設けることにより、第一シェル分割部4と第二シェル分割部5を直接着脱可能に構成すれば、別途用意する着脱手段が不要になるため、着脱操作を容易に行うことができるとともに、コスト面でも有利となる。   (7) When configuring the detachable means 6 according to a preferred aspect, by providing the mounting part 11 on one of the first shell split part 4 or the second shell split part 5 and the mounted part 12 on the other, If the first shell dividing portion 4 and the second shell dividing portion 5 are configured to be directly attachable / detachable, a separate attaching / detaching means is not required, so that the attaching / detaching operation can be easily performed and the cost is advantageous. .

(8) 好適な態様により、着脱手段6を構成するに際し、第一シェル分割部4と第二シェル分割部5に対して着脱し、装着時には第一シェル分割部4と第二シェル分割部5間に跨がることにより第一シェル分割部4と第二シェル分割部5を固定可能な別体の着脱具13を備えて構成すれば、第一シェル分割部4と第二シェル分割部5をより強固に結合できるため、シェル部2の密閉性及び耐圧性をより高めることができる。   (8) When configuring the attaching / detaching means 6 according to a preferred embodiment, the first shell dividing portion 4 and the second shell dividing portion 5 are attached to and detached from the first shell dividing portion 4 and the second shell dividing portion 5 at the time of mounting. If it comprises the separate attachment / detachment tool 13 which can fix the 1st shell division | segmentation part 4 and the 2nd shell division | segmentation part 5 by straddling in between, it will comprise the 1st shell division | segmentation part 4 and the 2nd shell division | segmentation part 5 Can be more firmly coupled, so that the hermeticity and pressure resistance of the shell portion 2 can be further enhanced.

(9) 好適な態様により、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3を直接洗浄する洗浄手段14を備えて構成すれば、特に、コイル管部3の形態に適した洗浄が可能になるため、洗浄性(洗浄能力)及び洗浄能率をより高めることができる。   (9) According to a preferred embodiment, if the first shell divided portion 4 is provided with a cleaning means 14 that is attached to and detached from the first shell divided portion 4 instead of the second shell divided portion 5 and that directly cleans the coil tube portion 3 when it is attached. In particular, since it is possible to perform cleaning suitable for the form of the coil tube portion 3, it is possible to further improve the cleaning performance (cleaning capability) and the cleaning efficiency.

(10) 好適な態様により、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3の洗浄を補助する洗浄補助手段15を備えて構成すれば、他の洗浄手段と組合わせることにより洗浄性(洗浄能力)及び洗浄能率をより高めることができるとともに、比較的低コストに実現できる。   (10) According to a preferred embodiment, the first shell divided portion 4 is provided with a cleaning auxiliary means 15 that is attached to and detached from the first shell divided portion 4 instead of the second shell divided portion 5 and assists the cleaning of the coil tube portion 3 when attached. If it is combined with other washing | cleaning means, while being able to improve a washability (washing ability) and a washing | cleaning efficiency, it can implement | achieve at comparatively low cost.

本発明の好適実施形態に係る熱交換器の内部構造を示す断面正面図、Sectional front view which shows the internal structure of the heat exchanger which concerns on suitable embodiment of this invention, 同熱交換器に備える第一シェル分割部から第二シェル分割部を離脱した状態を示す分解正面図、An exploded front view showing a state in which the second shell divided portion is detached from the first shell divided portion provided in the heat exchanger, 同熱交換器に用いるクランプバンド(着脱手段)の平面図、A plan view of a clamp band (detachment means) used in the heat exchanger, 同熱交換器の外観正面図、Appearance front view of the heat exchanger, 同熱交換器の第一シェル分割部の平面図、The top view of the 1st shell division part of the heat exchanger, 同熱交換器の第一シェル分割部の底面図、Bottom view of the first shell split part of the heat exchanger, 同熱交換器を備えるクーラントチラー及び工作機械を含む回路系統図、A circuit diagram including a coolant chiller and a machine tool provided with the heat exchanger, 同熱交換器に備える洗浄手段の断面正面図、Cross-sectional front view of cleaning means provided for the heat exchanger, 同熱交換器に備える洗浄補助手段の断面正面図、Cross-sectional front view of cleaning auxiliary means provided for the heat exchanger, 本発明の変更実施形態に係る熱交換器の外観正面図、An external front view of a heat exchanger according to a modified embodiment of the present invention, 本発明の他の変更実施形態に係る熱交換器の外観正面図、An external front view of a heat exchanger according to another modified embodiment of the present invention, 本発明の他の変更実施形態に係る熱交換器の外観正面図、An external front view of a heat exchanger according to another modified embodiment of the present invention, 本発明の他の変更実施形態に係る熱交換器の一部を抽出して示す断面正面図、Sectional front view, extracting and showing a part of a heat exchanger according to another modified embodiment of the present invention,

次に、本発明に係る好適実施形態を挙げ、図面に基づき詳細に説明する。   Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

まず、本実施形態に係るクーラントチラー用熱交換器1の全体構成について、図1〜図6を参照して説明する。   First, the whole structure of the heat exchanger 1 for coolant chillers which concerns on this embodiment is demonstrated with reference to FIGS.

熱交換器1において、2はステンレス素材等により形成したシェル部であり、円筒形のシェル本体部2mとこのシェル本体部2mの上端及び下端を覆う上端面部2u及び下端面部2dを有する。そして、このシェル部2において、軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsに分割する分割部Pcを設ける。これにより、シェル部2は、図2に示すように、下端面部2dを有する第一シェル分割部4と上端面部2uを有する第二シェル分割部5との二分割構造となる。この場合、分割部Pcは、できるだけ下端面部2d寄りに設けることが望ましい。図1〜図4は、下端面部2dのみにより第一シェル分割部4を構成した場合を例示する。したがって、第二シェル分割部5は、シェル本体部2mと上端面部2uにより構成される。このように、第一シェル分割部4を、下端面部2dのみにより構成すれば、第一シェル分割部4の形状は平坦状の円板になるため、コイル管部3の側方が開放され、コイル管部3の洗浄をより容易かつ確実に行える利点がある。   In the heat exchanger 1, reference numeral 2 denotes a shell portion formed of a stainless steel material or the like, and includes a cylindrical shell main body portion 2m, and an upper end surface portion 2u and a lower end surface portion 2d that cover the upper and lower ends of the shell main body portion 2m. And in this shell part 2, the division part Pc which divides | segments the shell part 2 to the axial direction Fs is provided between the center site | part Xc and the lower end surface part 2d in the axial direction Fs. Thereby, as shown in FIG. 2, the shell portion 2 has a two-part structure of a first shell division portion 4 having a lower end surface portion 2d and a second shell division portion 5 having an upper end surface portion 2u. In this case, it is desirable to provide the dividing portion Pc as close to the lower end surface portion 2d as possible. 1 to 4 exemplify a case where the first shell dividing portion 4 is configured only by the lower end surface portion 2d. Accordingly, the second shell dividing portion 5 is constituted by the shell main body portion 2m and the upper end surface portion 2u. Thus, if the 1st shell division part 4 is comprised only by the lower end surface part 2d, since the shape of the 1st shell division part 4 will become a flat disk, the side of the coil pipe part 3 is open | released, There exists an advantage which can wash | clean the coil pipe | tube part 3 more easily and reliably.

また、分割部Pcを着脱可能な着脱手段6を備える。この着脱手段6には、第一シェル分割部4と第二シェル分割部5に対して着脱し、装着時には第一シェル分割部4と第二シェル分割部5間に跨がることにより第一シェル分割部4と第二シェル分割部5を固定可能な別体の着脱具13を用いる。例示の着脱具13は、クランプバンド20であり、図3に示すように、リング形のバンドを三つに分割した形状のバンド分割部21,22及び23を備え、中間のバンド分割部21の両端に二つのバンド分割部22,23の一端をそれぞれ回動部24,25を介して連結するとともに、両側のバンド分割部22,23の他端同士を連結又は離脱させる締付部13cを備える。この場合、締付部13cは、バンド分割部22,23の他端から径方向に突出した一対の連結片22j,23jと、この連結片22jと23jを連結又は連結解除する連結部26とを有するとともに、この連結部26は、さらに、一方の連結片22jに回動自在に取付けたボルト部26bと、このボルト部26bに先端を螺合したグリップ付ナット部26nとを有する。なお、各バンド分割部21,22及び23の断面は、図1に示すように、上下部位に傾斜面を有する。   Moreover, the attachment / detachment means 6 which can attach or detach the division | segmentation part Pc is provided. The attaching / detaching means 6 is attached to and detached from the first shell dividing portion 4 and the second shell dividing portion 5 and extends between the first shell dividing portion 4 and the second shell dividing portion 5 at the time of attachment. A separate attachment / detachment tool 13 capable of fixing the shell dividing portion 4 and the second shell dividing portion 5 is used. The illustrated attachment / detachment tool 13 is a clamp band 20, and includes band division parts 21, 22, and 23 having a shape obtained by dividing a ring-shaped band into three parts, as shown in FIG. A tightening portion 13c is provided at both ends for connecting one end of the two band dividing portions 22 and 23 via the rotating portions 24 and 25, respectively, and connecting or detaching the other ends of the band dividing portions 22 and 23 on both sides. . In this case, the tightening portion 13c includes a pair of connecting pieces 22j and 23j protruding in the radial direction from the other ends of the band dividing portions 22 and 23, and a connecting portion 26 for connecting or releasing the connecting pieces 22j and 23j. The connecting portion 26 further includes a bolt portion 26b that is rotatably attached to one connecting piece 22j, and a nut portion 26n with a grip that has a tip screwed into the bolt portion 26b. In addition, the cross section of each band division | segmentation part 21, 22, and 23 has an inclined surface in an up-and-down site | part, as shown in FIG.

一方、第一シェル分割部4の周縁にはフランジ部4fを一体形成するとともに、第二シェル分割部5の下端にはフランジ部5fを一体形成する。これにより、第一シェル分割部4と第二シェル分割部5を一体化する際には、図2に示すように、シールリング(Oリング)29を介してフランジ部4fと5fを重ね合わせ、連結部26による連結を解除状態にしたクランプバンド20、即ち、図3に仮想線で示すクランプバンド20を、フランジ部4fと5fの双方の周縁を挟むように装着した後、図3に実線で示すように、グリップ付ナット部26nを他方の連結片23jに設けた割溝に係合させ、この後、グリップ付ナット部26nを回し操作することにより締め付ければよい。これにより、第一シェル分割部4と第二シェル分割部5は一体に固定される。このような別体のクランプバンド20(着脱具13)を備えて構成すれば、第一シェル分割部4と第二シェル分割部5をより強固に結合できるため、シェル部2の密閉性及び耐圧性をより高めることができる。   On the other hand, a flange portion 4 f is formed integrally with the periphery of the first shell divided portion 4, and a flange portion 5 f is formed integrally with the lower end of the second shell divided portion 5. Thereby, when integrating the 1st shell division part 4 and the 2nd shell division part 5, as shown in FIG. 2, the flange parts 4f and 5f are overlapped via the seal ring (O-ring) 29, After mounting the clamp band 20 released from the connection by the connecting portion 26, that is, the clamp band 20 indicated by the phantom line in FIG. 3 so as to sandwich the peripheral edges of both the flange portions 4f and 5f, the solid band in FIG. As shown, the nut part 26n with the grip may be engaged with the split groove provided in the other connecting piece 23j, and then the nut part 26n with the grip may be turned and tightened. Thereby, the 1st shell division part 4 and the 2nd shell division part 5 are fixed integrally. If such a separate clamp band 20 (attachment / detachment tool 13) is provided, the first shell divided portion 4 and the second shell divided portion 5 can be more firmly coupled. The sex can be increased.

他方、第一シェル分割部4には、図6に示すように、シェル部2に対する液流入口2iと液流出口2e及びコイル管部3に対する冷媒流入口3i…と冷媒流出口3e…を配設する。したがって、第一シェル分割部4の上面には、コイル管部3を配設し、このコイル管部3の一端側を冷媒流入口3i…に接続し、コイル管部3の他端側を冷媒流出口3e…に接続する。なお、例示の場合、コイル管部3の端部をそのまま冷媒流入口3i…及び冷媒流出口3e…として構成し、下端面部2dを貫通させることにより当該下端面部2dの下方に露出させている。コイル管部3は、図1に示すように、第一シェル分割部4からシェル部2の内部外周側Xfに配して上端面部2uの近傍に至る外側コイル半部7と、この外側コイル半部7の上端から折返し、シェル部2の内部中心側Xiに配して第一シェル分割部4に至る内側コイル半部8とを備えて構成する。また、例示のコイル管部3は、四本の熱交換管31a,31b,31c及び31dを横二列縦二段に配した集合管により構成し、この集合管を螺旋状に湾曲させて製作する。これにより、コイル管部3は、シェル部2の内部に収容して冷媒Kmの流通路を形成する。一方、冷媒流入口3i…は外部のマニホールド33に接続するとともに、冷媒流出口3e…は外部のマニホールド34に接続する。なお、36a,36b及び36cは熱交換器1を支持する三つの脚部を示す。   On the other hand, as shown in FIG. 6, the first shell dividing section 4 is provided with a liquid inlet 2i and a liquid outlet 2e for the shell 2, and a refrigerant inlet 3i and a refrigerant outlet 3e for the coil tube section 3. Set up. Therefore, the coil pipe part 3 is disposed on the upper surface of the first shell dividing part 4, one end side of the coil pipe part 3 is connected to the refrigerant inlet 3i, and the other end side of the coil pipe part 3 is connected to the refrigerant. Connect to outlet 3e. In the case of illustration, the end of the coil tube portion 3 is configured as the refrigerant inlet 3i and the refrigerant outlet 3e as it is, and is exposed below the lower end surface 2d by penetrating the lower end surface 2d. As shown in FIG. 1, the coil tube portion 3 includes an outer coil half portion 7 that extends from the first shell dividing portion 4 to the inner outer peripheral side Xf of the shell portion 2 and reaches the vicinity of the upper end surface portion 2u, and the outer coil half portion. The inner coil half portion 8 is folded back from the upper end of the portion 7 and arranged on the inner center side Xi of the shell portion 2 to reach the first shell split portion 4. The illustrated coil tube section 3 is constituted by a collecting tube in which four heat exchange tubes 31a, 31b, 31c and 31d are arranged in two horizontal rows and two vertical rows, and this collecting tube is manufactured by bending it spirally. To do. Thereby, the coil pipe | tube part 3 is accommodated in the inside of the shell part 2, and forms the flow path of the refrigerant | coolant Km. On the other hand, the refrigerant inlets 3i are connected to an external manifold 33, and the refrigerant outlets 3e are connected to an external manifold. Reference numerals 36a, 36b, and 36c denote three legs that support the heat exchanger 1.

コイル管部3を、このような外側コイル半部7と内側コイル半部8により構成すれば、コイル管部3の全長をシェル部2の筒長のほぼ二倍にできるため、熱交換面積もほぼ二倍にでき、もって、熱の交換効率を飛躍的に高めることができる。この場合、シェル部2の内部のコイル管部3の密度が二倍になり、切粉等の汚れがより堆積しやすくなるが、シェル部2は第一シェル分割部4から第二シェル分割部5を離脱して洗浄可能なため、特に、本発明はこのような熱交換器1の実施態様に適用して最適となる。   If the coil tube portion 3 is constituted by the outer coil half portion 7 and the inner coil half portion 8, the entire length of the coil tube portion 3 can be made almost twice the cylinder length of the shell portion 2. It can be almost doubled, so that the heat exchange efficiency can be dramatically increased. In this case, the density of the coil tube portion 3 inside the shell portion 2 is doubled, and dirt such as chips is more likely to accumulate, but the shell portion 2 is changed from the first shell divided portion 4 to the second shell divided portion. In particular, the present invention is optimally applied to such an embodiment of the heat exchanger 1 because it can be removed and cleaned.

さらに、シェル部2の内部には、第一シェル分割部4(下端面部2d)の上面から軸方向Fs上方に突出し、かつ外側コイル半部7と内側コイル半部8間に介在するとともに、上端面部2uの近傍に至る円筒形の流通路仕切部9を配設する。この場合、液流入口2iは流通路仕切部9の外側に臨ませ、液流出口2eは流通路仕切部9の内側に臨ませる。これにより、シェル部2は、流通路仕切部9と共にクーラント液Lcの流通路を形成する。なお、液流入口2iは、上端面部2dに対して斜めに傾斜させて配することにより、クーラント液Lcが液流入口2iからシェル部2の内部に流入した際に螺旋流が発生するように考慮する。   Further, inside the shell portion 2, it protrudes upward in the axial direction Fs from the upper surface of the first shell dividing portion 4 (lower end surface portion 2 d), and is interposed between the outer coil half portion 7 and the inner coil half portion 8, and has an upper end A cylindrical flow passage partition 9 that reaches the vicinity of the surface 2u is disposed. In this case, the liquid inlet 2 i faces the outside of the flow passage partition 9, and the liquid outlet 2 e faces the inside of the flow passage partition 9. Thereby, the shell part 2 forms the flow path of the coolant Lc together with the flow path partitioning part 9. The liquid inlet 2i is disposed obliquely with respect to the upper end surface portion 2d so that a spiral flow is generated when the coolant liquid Lc flows into the shell portion 2 from the liquid inlet 2i. Consider.

このような流通路仕切部9を設けるとともに、液流入口2iを流通路仕切部9の外側に臨ませ、液流出口2eを流通路仕切部9の内側に臨ませれば、シェル部2の内部におけるクーラント液Lcの流通路の長さをほぼ二倍にできるため、より効率的な熱交換を行うことができるとともに、流通路の形状が複雑になっても、シェル部2は第一シェル分割部4から第二シェル分割部5を離脱可能なため、容易に洗浄することができる。   If such a flow passage partition 9 is provided, the liquid inlet 2 i faces the outside of the flow passage partition 9, and the liquid outlet 2 e faces the inside of the flow passage partition 9, the shell 2 Since the length of the flow path of the coolant liquid Lc in the inside can be almost doubled, more efficient heat exchange can be performed, and even if the shape of the flow path is complicated, the shell portion 2 can be used as the first shell. Since the second shell divided portion 5 can be detached from the divided portion 4, it can be easily cleaned.

次に、本実施形態に係る熱交換器1を用いたクーラントチラー及びこのクーラントチラーにより冷却されるクーラント液Lcの循環系について、図7を参照して説明する。   Next, a coolant chiller using the heat exchanger 1 according to the present embodiment and a circulation system of the coolant Lc cooled by the coolant chiller will be described with reference to FIG.

図7において、40はクーラントチラー、80はこのクーラントチラー40により冷却されるクーラント液Lcの循環系をそれぞれ示す。まず、クーラントチラー40は、一般的な冷凍サイクルCを構成しており、本実施形態に係る熱交換器1の一次側、即ち、冷媒流入口3i…を接続したマニホールド33と冷媒流出口3e…を接続したマニホールド34を、冷凍サイクルCを構成する冷媒回路に接続する。また、熱交換器1の二次側、即ち、液流入口2iと液流出口2eは、クーラント液Lcの循環系に接続する。   In FIG. 7, reference numeral 40 denotes a coolant chiller, and 80 denotes a circulation system of the coolant Lc cooled by the coolant chiller 40. First, the coolant chiller 40 constitutes a general refrigeration cycle C. The primary side of the heat exchanger 1 according to the present embodiment, that is, the manifold 33 connected to the refrigerant inlet 3i and the refrigerant outlet 3e. Is connected to the refrigerant circuit constituting the refrigeration cycle C. Further, the secondary side of the heat exchanger 1, that is, the liquid inlet 2i and the liquid outlet 2e are connected to the circulation system of the coolant Lc.

冷凍サイクルCは、冷媒ストレーナ41,圧縮機42,凝縮器43,電子膨張弁44を順次接続するとともに、冷媒ストレーナ41の冷媒入口をマニホールド34に接続し、かつ電子膨張弁44の冷媒出口をマニホールド33に接続した構成を備えており、これにより、冷媒Kmが循環する冷媒回路が構成される。なお、例示の冷凍サイクルCは、マニホールド33と圧縮機42の吐出口間に接続した、キャピラリチューブ46と電磁弁47の直列回路からなるホットガスバイパス回路45を備えている。その他、図7中、43fは凝縮器43を空冷する凝縮器ファン、48は高圧圧力スイッチ、49は低圧圧力スイッチ、50は吐出管温度センサ、51は周囲温度センサ、52は凝縮冷媒温度センサ、53は熱交換器入口温度センサ、54は吸入温度センサ、55はチェックジョイント、56は圧縮機インバータをそれぞれ示す。   In the refrigeration cycle C, the refrigerant strainer 41, the compressor 42, the condenser 43, and the electronic expansion valve 44 are sequentially connected, the refrigerant inlet of the refrigerant strainer 41 is connected to the manifold 34, and the refrigerant outlet of the electronic expansion valve 44 is connected to the manifold. 33, the refrigerant circuit through which the refrigerant Km circulates is configured. The illustrated refrigeration cycle C includes a hot gas bypass circuit 45 including a series circuit of a capillary tube 46 and an electromagnetic valve 47 connected between the manifold 33 and the discharge port of the compressor 42. 7, 43f is a condenser fan for cooling the condenser 43, 48 is a high pressure switch, 49 is a low pressure switch, 50 is a discharge pipe temperature sensor, 51 is an ambient temperature sensor, 52 is a condensed refrigerant temperature sensor, 53 is a heat exchanger inlet temperature sensor, 54 is an intake temperature sensor, 55 is a check joint, and 56 is a compressor inverter.

一方、クーラント液Lcの循環系80において、81はクーラント液Lcを貯留するクーラント液タンクを示す。クーラント液タンク81の内部は、半仕切板81a,81bによりクーラント液供給槽部82とクーラント液冷却槽部83に仕切られ、クーラント液冷却槽部83は、循環ポンプ84を接続した吸入管85を介して熱交換器1の液流入口2iに接続するとともに、熱交換器1の液流出口2eは、戻し管86を介してクーラント液冷却槽部83に接続する。また、クーラント液供給槽部82は、送液ポンプ87を接続した供給管88を介して工作機械100の放出ノズル101に接続するとともに、工作機械100の液回収トレイ102はフィルタ89を接続した戻し管90を介してクーラント液冷却槽部83に接続する。さらに、供給管88における循環ポンプ84の下流側には、液流入口2iに流入するクーラント液Lcの温度を検出する熱交換器入口温度センサ91を付設する。   On the other hand, in the circulating system 80 for the coolant liquid Lc, reference numeral 81 denotes a coolant liquid tank that stores the coolant liquid Lc. The interior of the coolant liquid tank 81 is divided into a coolant liquid supply tank section 82 and a coolant liquid cooling tank section 83 by half-partition plates 81a and 81b. The coolant liquid cooling tank section 83 has a suction pipe 85 connected to a circulation pump 84. The liquid outlet 2 e of the heat exchanger 1 is connected to the coolant liquid cooling bath 83 via the return pipe 86. The coolant liquid supply tank 82 is connected to the discharge nozzle 101 of the machine tool 100 via a supply pipe 88 connected to the liquid feed pump 87, and the liquid recovery tray 102 of the machine tool 100 is returned to which a filter 89 is connected. The coolant 90 is connected to the coolant cooling tank 83 via the pipe 90. Further, a heat exchanger inlet temperature sensor 91 for detecting the temperature of the coolant liquid Lc flowing into the liquid inlet 2i is provided downstream of the circulation pump 84 in the supply pipe 88.

他方、95はコントローラを示す。コントローラ95は、クーラントチラー40の全体の制御を司る機能を備える。なお、必要によりクーラント液Lcの循環系80における一部又は全部の制御を司る機能を設けることができる。したがって、コントローラ95の制御出力ポートには、少なくとも上述した圧縮機インバータ56を接続するとともに、循環ポンプ84、更には送液ポンプ87を接続する。また、コントローラ95の入力ポートには、少なくとも熱交換器1の熱交換器入口温度センサ91を接続する。コントローラ95は、CPU,メモリ,電源ユニット等を含むコンピュータ機能を備え、少なくともクーラントチラー40に係わる温度制御(シーケンス制御)を実行する。したがって、コントローラ95には、これらの制御を実現するための制御プログラムを格納する。   On the other hand, 95 indicates a controller. The controller 95 has a function for controlling the entire coolant chiller 40. If necessary, a function for controlling a part or all of the coolant liquid Lc in the circulation system 80 can be provided. Therefore, at least the compressor inverter 56 described above is connected to the control output port of the controller 95, and the circulation pump 84 and further the liquid feed pump 87 are connected. Further, at least the heat exchanger inlet temperature sensor 91 of the heat exchanger 1 is connected to the input port of the controller 95. The controller 95 has a computer function including a CPU, a memory, a power supply unit, and the like, and executes temperature control (sequence control) related to at least the coolant chiller 40. Therefore, the controller 95 stores a control program for realizing these controls.

次に、本実施形態に係る熱交換器1の機能を含むクーラントチラー40の動作及び洗浄方法について、図1〜図9を参照して説明する。   Next, operation | movement and the washing | cleaning method of the coolant chiller 40 including the function of the heat exchanger 1 which concern on this embodiment are demonstrated with reference to FIGS.

まず、クーラントチラー40を作動させれば、冷凍サイクルC内を冷媒Kmが循環し、熱交換器1のコイル管部3は冷却器(蒸発器)として機能し、クーラント液Lcに対する冷却が行われる。この場合、熱交換器1では、冷媒流入口3i…から冷媒Kmが外側コイル半部7に流入し、外側コイル半部7を流通して上端側に至るとともに、この後、内側コイル半部8に流入し、内側コイル半部8を流通して下端側に至り、冷媒流出口3e…から流出する。一方、循環ポンプ84の作動により、クーラント液Lcがクーラント液タンク81のクーラント液冷却槽部83から吸い上げられ、吸入管85を流通した後、液流入口2iからシェル部2の内部に流入する。この際、クーラント液Lcは流通路仕切部9の外側の空間に斜め上方に向いた螺旋状に流入するとともに、順次貯留される。そして、クーラント液Lcの液面が上昇し、流通路仕切部9の上端に達すれば、クーラント液Lcは流通路仕切部9の内側の空間に落下流入し、液流出口2eから流出する。この場合、液流出口2eからの自然流出による流量よりも循環ポンプ84の作動による流量が多くなれば、流通路仕切部9の内側の空間にもクーラント液Lcが貯留され、最終的にはシェル部2の内部にクーラント液Lcが満たされる。   First, when the coolant chiller 40 is operated, the refrigerant Km circulates in the refrigeration cycle C, the coil tube portion 3 of the heat exchanger 1 functions as a cooler (evaporator), and the coolant liquid Lc is cooled. . In this case, in the heat exchanger 1, the refrigerant Km flows into the outer coil half 7 from the refrigerant inlet 3 i... Circulates through the outer coil half 7 and reaches the upper end side, and thereafter the inner coil half 8. , Flows through the inner coil half 8, reaches the lower end side, and flows out from the refrigerant outlet 3 e. On the other hand, by the operation of the circulation pump 84, the coolant liquid Lc is sucked up from the coolant liquid cooling tank portion 83 of the coolant liquid tank 81, flows through the suction pipe 85, and then flows into the shell portion 2 from the liquid inlet 2 i. At this time, the coolant liquid Lc flows into the outer space of the flow passage partition 9 in a spiral shape obliquely upward and is sequentially stored. And if the liquid level of the coolant liquid Lc rises and reaches the upper end of the flow path partition part 9, the coolant liquid Lc will fall and flow into the space inside the flow path partition part 9, and will flow out from the liquid outlet 2e. In this case, if the flow rate due to the operation of the circulation pump 84 is larger than the flow rate due to natural outflow from the liquid outlet 2e, the coolant liquid Lc is also stored in the space inside the flow passage partition 9, and finally the shell The inside of the part 2 is filled with the coolant liquid Lc.

これにより、シェル部2の内部では、クーラント液Lcと冷媒Kmとの熱交換が行われ、クーラント液タンク81内のクーラント液Lcに対する冷却が行われる。この際、液流入口2iに流入するクーラント液Lcの温度は熱交換器入口温度センサ91により検出され、検出温度としてコントローラ95に付与される。コントローラ95には、予め目標温度が設定されているため、コントローラ95は、検出温度が目標温度になるように、圧縮機インバータ56に制御信号を付与し、圧縮機42の回転数を可変することにより、クーラント液Lcの温度に対するフィードバック制御を行う。   Accordingly, heat exchange between the coolant liquid Lc and the refrigerant Km is performed inside the shell portion 2, and cooling of the coolant liquid Lc in the coolant liquid tank 81 is performed. At this time, the temperature of the coolant liquid Lc flowing into the liquid inlet 2i is detected by the heat exchanger inlet temperature sensor 91 and is given to the controller 95 as the detected temperature. Since the target temperature is set in advance in the controller 95, the controller 95 gives a control signal to the compressor inverter 56 so that the detected temperature becomes the target temperature, thereby changing the rotational speed of the compressor 42. Thus, feedback control on the temperature of the coolant liquid Lc is performed.

他方、送液ポンプ87の作動により、冷却されたクーラント液Lcがクーラント液タンク81のクーラント液供給槽部82から吸い上げられ、供給管88を通して工作機械100の放出ノズル101に送られる。これにより、放出ノズル101からワーク105に対して冷却されたクーラント液Lcが放出され、加工により発熱したワーク105が冷却される。そして、使用されたクーラント液Lcは液回収トレイ102により回収され、戻し管90及びフィルタ89を通してクーラント液冷却槽部83に戻される。この場合、液回収トレイ102に回収されるクーラント液Lcは、切粉等の混在により汚れているが、この汚れはフィルタ89により除去される。しかし、フィルタ89により完全に除去することは困難であるため、クーラント液冷却槽部83に収容されるクーラント液Lcは徐々に汚れが進行するとともに、汚れたクーラント液Lcが熱交換器1を循環し、熱交換器1の内部にも汚れが堆積するとともに、藻等も自然発生する。   On the other hand, by the operation of the liquid feed pump 87, the cooled coolant liquid Lc is sucked up from the coolant liquid supply tank portion 82 of the coolant liquid tank 81 and sent to the discharge nozzle 101 of the machine tool 100 through the supply pipe 88. Thereby, the coolant liquid Lc cooled with respect to the workpiece | work 105 is discharged | emitted from the discharge | emission nozzle 101, and the workpiece | work 105 which generate | occur | produced the heat | fever by processing is cooled. The used coolant liquid Lc is recovered by the liquid recovery tray 102 and returned to the coolant liquid cooling tank 83 through the return pipe 90 and the filter 89. In this case, the coolant liquid Lc recovered in the liquid recovery tray 102 is contaminated due to the mixing of chips and the like, but this dirt is removed by the filter 89. However, since it is difficult to remove completely by the filter 89, the coolant liquid Lc accommodated in the coolant liquid cooling bath 83 gradually gets dirty, and the dirty coolant liquid Lc circulates through the heat exchanger 1. In addition, dirt accumulates inside the heat exchanger 1 and algae and the like naturally occur.

したがって、熱交換器1は、定期的に又は使用環境により汚れがひどいときには、内部の洗浄を行う必要がある。この場合、従来では、前述したように、熱交換器1からクーラント液Lcを排出した後、クーラント液タンク81から外した吸入管85と戻し管86を、洗浄液の収容された洗浄液タンクに浸け、循環ポンプ84を作動させることにより、熱交換器1に洗浄液を循環させる洗浄を行っていた。しかし、本実施形態に係る熱交換器1では、熱交換器1からクーラント液Lcを排出した後、クランプバンド20を取外すことにより、第一シェル分割部4から第二シェル分割部5を離脱できる。これにより、図2に示すように、コイル管部3を外部に露出させることができるため、この状態でコイル管部3及び第二シェル分割部5内部の洗浄を容易に行うことができる。   Therefore, it is necessary to clean the inside of the heat exchanger 1 periodically or when the dirt is severe due to the use environment. In this case, conventionally, as described above, after the coolant liquid Lc is discharged from the heat exchanger 1, the suction pipe 85 and the return pipe 86 removed from the coolant liquid tank 81 are immersed in the cleaning liquid tank in which the cleaning liquid is stored. By operating the circulation pump 84, the heat exchanger 1 was cleaned to circulate the cleaning liquid. However, in the heat exchanger 1 according to the present embodiment, the second shell divided portion 5 can be detached from the first shell divided portion 4 by removing the clamp band 20 after discharging the coolant Lc from the heat exchanger 1. . Thereby, as shown in FIG. 2, since the coil pipe part 3 can be exposed outside, the inside of the coil pipe part 3 and the second shell division part 5 can be easily cleaned in this state.

洗浄に際しては、洗浄用ブラシや洗浄用雑巾等を用いた手作業による洗浄を行ってももちろんよいが、より好適な態様により洗浄を行うには、図8に示す専用の洗浄器70等の洗浄手段14を用いたり、図9に示す専用の洗浄補助具75等の洗浄補助手段15を用いることが望ましい。   In the cleaning, it is of course possible to perform manual cleaning using a cleaning brush, a cleaning duster, or the like. However, in order to perform cleaning in a more preferable mode, the dedicated cleaning device 70 shown in FIG. It is desirable to use the means 14 or the cleaning auxiliary means 15 such as the dedicated cleaning auxiliary tool 75 shown in FIG.

図8に示す洗浄器70は、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3を直接洗浄可能な機能を備えている。この洗浄器70は、第一シェル分割部4のフランジ部4fに着脱可能な装着部71cを下端に形成した外筒部71と、この外筒部71の内部に回動自在に配した内筒部72と、この内筒部72の上端面に固定したシャフト部73sと、このシャフト部73sの上端側を外筒部71の挿通孔を通して外部に突出させ、クランク状に折曲形成した回動操作部73gと、内筒部72の内周面から突出した外側洗浄ブラシ部74eと、シャフト部73sから突出した内側洗浄ブラシ部74iとにより構成する。なお、外筒部71及び内筒部72は、透明なプラスチック素材等により形成することが望ましい。   The washer 70 shown in FIG. 8 has a function capable of directly washing the coil tube portion 3 when it is attached to and detached from the first shell division portion 4 instead of the second shell division portion 5 and attached. The washer 70 includes an outer cylinder portion 71 having a mounting portion 71c that can be attached to and detached from the flange portion 4f of the first shell dividing portion 4 at the lower end, and an inner cylinder that is rotatably disposed inside the outer cylinder portion 71. Part 72, a shaft part 73s fixed to the upper end surface of the inner cylinder part 72, and a rotation in which the upper end side of the shaft part 73s protrudes outside through the insertion hole of the outer cylinder part 71 and is bent into a crank shape. The operation portion 73g, the outer cleaning brush portion 74e protruding from the inner peripheral surface of the inner cylinder portion 72, and the inner cleaning brush portion 74i protruding from the shaft portion 73s are configured. The outer cylinder portion 71 and the inner cylinder portion 72 are preferably formed of a transparent plastic material or the like.

また、図9に示す洗浄補助具75は、第一シェル分割部4に対して第二シェル分割部5の代わりに着脱し、装着した際にコイル管部3の洗浄を補助する機能を備えており、この洗浄補助具75は、第一シェル分割部4のフランジ部4fに着脱可能な装着部76cを下端に形成した筒部76を備えている。この筒部76も透明なプラスチック素材等により形成することが望ましい。   Further, the cleaning aid 75 shown in FIG. 9 has a function of assisting in cleaning the coil tube portion 3 when it is attached to and detached from the first shell divided portion 4 instead of the second shell divided portion 5 and attached. The cleaning aid 75 includes a cylindrical portion 76 having a mounting portion 76c that is detachably attached to the flange portion 4f of the first shell dividing portion 4 at the lower end. It is desirable that the cylindrical portion 76 is also formed of a transparent plastic material or the like.

洗浄を行う際には、第二シェル分割部5の代わりに洗浄器70を第一シェル分割部4に装着すればよい。この場合、外筒部71の装着部71cを第一シェル分割部4のフランジ部4fに装着することができる。これにより、外側洗浄ブラシ部74eは外側コイル半部7に接触し、内側洗浄ブラシ部74iは内側コイル半部8に接触する。なお、各ブラシ部74i,74eには予め洗浄液、例えば泡の出る洗浄液を塗布することが望ましい。そして、この状態で回動操作部73gを手で回動操作すれば、内筒部72及びシャフト部73sが一体に回動し、外側洗浄ブラシ部74eにより外側コイル半部7に対する洗浄(汚れ落とし)が行われるとともに、内側洗浄ブラシ部74iにより内側コイル半部8に対する洗浄(汚れ落とし)が行われる。この後、洗浄が終了したなら、洗浄器70の代わりに洗浄補助具75を装着し、洗浄補助具75の上端開口からシャワー水等をかけることにより、洗浄液を流し落とせばよい。   When cleaning is performed, the cleaning device 70 may be attached to the first shell dividing portion 4 instead of the second shell dividing portion 5. In this case, the mounting portion 71 c of the outer cylinder portion 71 can be mounted on the flange portion 4 f of the first shell dividing portion 4. As a result, the outer cleaning brush portion 74 e contacts the outer coil half 7, and the inner cleaning brush portion 74 i contacts the inner coil half 8. In addition, it is desirable to apply a cleaning liquid, for example, a cleaning liquid that generates bubbles, to the brush portions 74i and 74e in advance. In this state, if the turning operation portion 73g is turned by hand, the inner cylinder portion 72 and the shaft portion 73s are rotated together, and the outer cleaning brush portion 74e cleans the outer coil half portion 7 (dirt removal). ) And cleaning (dirt removal) of the inner coil half portion 8 is performed by the inner cleaning brush portion 74i. Thereafter, when the cleaning is completed, a cleaning auxiliary tool 75 is attached instead of the cleaning device 70, and shower water or the like is poured from the upper end opening of the cleaning auxiliary tool 75 so that the cleaning liquid is poured off.

他方、洗浄器70を用いることなく、洗浄補助具75のみを用いた洗浄も可能である。この場合、第二シェル分割部5の代わりに洗浄補助具75を第一シェル分割部4に装着する。そして、この状態で洗浄補助具75の上端開口から高圧洗浄機からの高圧洗浄水を吹き付けることにより洗浄を行うことができる。   On the other hand, the cleaning using only the cleaning aid 75 is possible without using the cleaning device 70. In this case, the cleaning auxiliary tool 75 is attached to the first shell dividing portion 4 instead of the second shell dividing portion 5. In this state, cleaning can be performed by spraying high-pressure cleaning water from the high-pressure cleaning machine through the upper end opening of the cleaning auxiliary tool 75.

このように、洗浄器70等の洗浄手段14をオプションとして備えれば、特に、コイル管部3の形態(態様)に適した洗浄が可能になるため、洗浄性(洗浄能力)及び洗浄能率をより高めることができる。また、洗浄補助具75等の洗浄補助手段15をオプションとして備えれば、他の洗浄手段と組合わせることにより洗浄性(洗浄能力)及び洗浄能率をより高めることができるとともに、比較的低コストに実現できる利点がある。   As described above, if the cleaning means 14 such as the cleaning device 70 is provided as an option, cleaning suitable for the form (mode) of the coil tube portion 3 can be performed, so that the cleaning performance (cleaning performance) and the cleaning efficiency are improved. Can be increased. Further, if the cleaning assisting means 15 such as the cleaning assisting tool 75 is provided as an option, the cleaning performance (cleaning performance) and the cleaning efficiency can be further improved by combining with other cleaning means, and at a relatively low cost. There are benefits that can be realized.

次に、本発明の変更実施形態に係るクーラントチラー用熱交換器1について、図10〜図13を参照して説明する。   Next, the heat exchanger 1 for coolant chillers which concerns on the modified embodiment of this invention is demonstrated with reference to FIGS.

図10に示す変更実施形態に係る熱交換器1は、シェル部2を第一シェル分割部4と第二シェル分割部5に分割する分割部Pcの位置を変更したものである。前述した図4(図1)に示した熱交換器1は、第一シェル分割部4を、下端面部2dのみにより構成、即ち、分割部Pcの位置として、最下部の位置を選択した例であるが、このような分割部Pcは、シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間の任意位置を選択できる。図10に示す変更実施形態では、中央部位Xcと下端面部2d間のほぼ中央の位置を分割部Pcに選定したものである。したがって、第一シェル分割部4には、下端面部2dとシェル本体部2mの下側一部2mdが含まれ、第二シェル分割部5には、上端面部2uとシェル本体部2mの上側残部2muが含まれる。この場合、液流入口2iはシェル本体部2mの下側一部2mdにおける周面部に設けることができる。これにより、液流入口2iから水平方向にクーラント液Lcを吐出させることができるため、より良好な螺旋流を発生させることができる。なお、その他の基本的な構成は、前述した図4(図1)に示した熱交換器1と同じになる。   The heat exchanger 1 according to the modified embodiment shown in FIG. 10 is obtained by changing the position of the dividing portion Pc that divides the shell portion 2 into the first shell dividing portion 4 and the second shell dividing portion 5. The heat exchanger 1 shown in FIG. 4 (FIG. 1) described above is an example in which the first shell divided portion 4 is configured by only the lower end surface portion 2d, that is, the lowermost position is selected as the position of the divided portion Pc. However, such a divided portion Pc can select an arbitrary position between the central portion Xc and the lower end surface portion 2d in the axial direction Fs of the shell portion 2. In the modified embodiment shown in FIG. 10, the substantially central position between the central portion Xc and the lower end surface portion 2d is selected as the divided portion Pc. Accordingly, the first shell dividing portion 4 includes the lower end surface portion 2d and the lower part 2md of the shell main body portion 2m, and the second shell dividing portion 5 includes the upper end surface portion 2u and the upper remaining portion 2mu of the shell main body portion 2m. Is included. In this case, the liquid inflow port 2i can be provided in the peripheral surface portion in the lower part 2md of the shell main body portion 2m. Thereby, since the coolant liquid Lc can be discharged in the horizontal direction from the liquid inlet 2i, a more favorable spiral flow can be generated. The other basic configuration is the same as that of the heat exchanger 1 shown in FIG. 4 (FIG. 1) described above.

図11に示す変更実施形態に係る熱交換器1は、設置時の向きを変更したものである。前述した図4(図1)に示した実施形態は、第一シェル分割部4を第二シェル分割部5に対して下側に位置させる第一設置態様Msにより設置した場合を示したが、図11に示す変更実施形態は、この第一設置態様Msに対して上下を反転させることにより第一シェル分割部4を第二シェル分割部5に対して上側に位置させる第二設置態様Mnにより設置したものである。したがって、熱交換器1の基本的な構成は、前述した図4(図1)に示した熱交換器1と同じになる。熱交換器1を設置する際には、例えば、ゲート形の設置用フレーム201を使用し、この設置用フレーム201の上フレーム201sにより、反転させた熱交換器1を吊り下げる態様により設置できる。このような第二設置態様Mnにより設置すれば、洗浄時に、洗浄液が第一シェル分割部4に溜まることがないため、洗浄作業をより円滑に行うことができる。このように、熱交換器1を、第一シェル分割部4を第二シェル分割部5に対して下側に位置させる第一設置態様Ms又は第一シェル分割部4を第二シェル分割部5に対して上側に位置させる第二設置態様Mn可能に構成すれば、液流入口2iと液流出口2e及び冷媒流入口3i…と冷媒流出口3e…を上側に配するか下側に配するかの選択ができるため、設計自由度を高めることができ、更なる小型化の実現にも寄与できる。   The heat exchanger 1 according to the modified embodiment shown in FIG. 11 is obtained by changing the orientation at the time of installation. The embodiment shown in FIG. 4 (FIG. 1) described above shows a case where the first shell dividing portion 4 is installed by the first installation mode Ms positioned below the second shell dividing portion 5, The modified embodiment shown in FIG. 11 is based on the second installation mode Mn in which the first shell division part 4 is positioned on the upper side with respect to the second shell division part 5 by inverting the first installation mode Ms. It is installed. Therefore, the basic configuration of the heat exchanger 1 is the same as that of the heat exchanger 1 shown in FIG. 4 (FIG. 1) described above. When installing the heat exchanger 1, for example, a gate-type installation frame 201 can be used, and the inverted heat exchanger 1 can be suspended by the upper frame 201 s of the installation frame 201. If it installs by such 2nd installation aspect Mn, since a washing | cleaning liquid does not accumulate in the 1st shell division part 4 at the time of washing | cleaning, a washing | cleaning operation can be performed more smoothly. In this way, the heat exchanger 1 is arranged such that the first shell division part 4 is positioned below the second shell division part 5 or the first shell division part 4 is the second shell division part 5. If the second installation mode Mn can be positioned on the upper side, the liquid inlet 2i, the liquid outlet 2e, the refrigerant inlet 3i, and the refrigerant outlet 3e are arranged on the upper side or the lower side. Therefore, it is possible to increase the degree of freedom in design and contribute to further miniaturization.

図12に示す変更実施形態に係る熱交換器1は、着脱手段6の形態を変更したものである。前述した図1(図4)に示した実施形態は、着脱手段6として、第一シェル分割部4と第二シェル分割部5を固定可能な別体の着脱具13を用いた例を示したが、図12に示す変更実施形態は、着脱手段6として、第二シェル分割部5の下端部の外周面にネジ部を形成した装着部11を設けるとともに、第一シェル分割部4の外周縁から上方に突出し、内周面に、当該装着部11が螺着するネジ孔部を形成した被装着部12を設けたものである。これにより、第一シェル分割部4と第二シェル分割部5は直接着脱可能となる。図12中、301は、装着時に、第一シェル分割部4と第二シェル分割部5間に介在されるシールリング(Oリング)を示すとともに、302及び303は、第二シェル分割部5を回す際に手で握ることができる一対のグリップを示す。なお、第二シェル分割部5に被装着部12を設け、第一シェル分割部4に装着部11を設けてもよい。このように、第一シェル分割部4と第二シェル分割部5を直接着脱可能に構成すれば、別途用意する着脱手段が不要となるため、着脱操作を容易に行えるとともに、コスト面でも有利となる。なお、その他の基本的な構成は、前述した図4(図1)に示した熱交換器1と同じになる。   The heat exchanger 1 according to the modified embodiment shown in FIG. 12 is obtained by changing the form of the attaching / detaching means 6. The embodiment shown in FIG. 1 (FIG. 4) described above shows an example in which a separate attachment / detachment tool 13 capable of fixing the first shell division portion 4 and the second shell division portion 5 is used as the attachment / detachment means 6. However, in the modified embodiment shown in FIG. 12, as the attaching / detaching means 6, the mounting portion 11 in which a screw portion is formed on the outer peripheral surface of the lower end portion of the second shell dividing portion 5 is provided, and the outer peripheral edge of the first shell dividing portion 4 is provided. The mounting portion 12 is provided with a screw hole portion that protrudes upward from the inner peripheral surface and into which the mounting portion 11 is screwed. Thereby, the 1st shell division part 4 and the 2nd shell division part 5 can be directly attached or detached. In FIG. 12, 301 indicates a seal ring (O-ring) interposed between the first shell dividing portion 4 and the second shell dividing portion 5 at the time of mounting, and 302 and 303 indicate the second shell dividing portion 5. A pair of grips that can be gripped by hand when turning are shown. The mounted portion 12 may be provided in the second shell dividing portion 5 and the mounting portion 11 may be provided in the first shell dividing portion 4. As described above, if the first shell dividing portion 4 and the second shell dividing portion 5 are configured to be directly attachable / detachable, an attaching / detaching means prepared separately becomes unnecessary, so that the attaching / detaching operation can be easily performed and the cost is advantageous. Become. The other basic configuration is the same as that of the heat exchanger 1 shown in FIG. 4 (FIG. 1) described above.

図13に示す変更実施形態に係る熱交換器1は、追加的構成要素として、吸気孔401及び/又は排出孔404を設けたものである。図13中、上段には、熱交換器1の上側の一部を示し、第二シェル分割部5の上端面部2uに、外気をシェル部2に導入可能なネジ孔部による吸気孔401を設けるとともに、この吸気孔401に着脱して当該吸気孔401を閉塞又は開放可能なボルトによる吸気孔キャップ402を設けた例を示す。なお、403は上端面部2uと吸気孔キャップ402間に介在させるシールリング(Oリング)を示す。このような吸気孔401を設ければ、シェル部2の内部の圧抜き(給気)を行うことができるため、シェル部2からのクーラント液Lcの液抜きを確実に行うことができるとともに、第一シェル分割部4と第二シェル分割部5を離脱する際における無用な吹き出しを防止して安全性を高めることができる。   The heat exchanger 1 according to the modified embodiment shown in FIG. 13 is provided with an intake hole 401 and / or a discharge hole 404 as additional components. In FIG. 13, the upper part shows a part of the upper side of the heat exchanger 1, and an intake hole 401 is formed in the upper end surface part 2 u of the second shell dividing part 5 by a screw hole part that can introduce outside air into the shell part 2. In addition, an example in which an intake hole cap 402 using a bolt that can be attached to and detached from the intake hole 401 to close or open the intake hole 401 is shown. Reference numeral 403 denotes a seal ring (O-ring) interposed between the upper end surface portion 2u and the intake hole cap 402. If such an intake hole 401 is provided, the inside of the shell portion 2 can be depressurized (air supply), so that the coolant liquid Lc can be reliably discharged from the shell portion 2, and Safety can be improved by preventing unnecessary blowing when the first shell dividing portion 4 and the second shell dividing portion 5 are separated.

他方、図13中、下段には、熱交換器1の下側の一部を示し、第一シェル分割部4を構成する下端面部2dに、シェル部2内部のクーラント液Lc又は洗浄液を外部に排出可能なネジ孔部による排出孔404を設けるとともに、この排出孔404に着脱して当該排出孔404を閉塞又は開放可能なボルトによる排出孔キャップ405を設けた例を示す。なお、406は下端面部2dと排出孔キャップ405間に介在させるシールリング(Oリング)を示す。このような排出孔404を設ければ、シェル部2内部におけるクーラント液Lc又は洗浄液の液抜きを確実に行うことができ、第一シェル分割部4と第二シェル分割部5を離脱する際におけるクーラント液Lc又は洗浄液の無用な外部流出を防止でき、洗浄作業をより円滑に行うことができるとともに、下端面部2dの上面に溜まった切粉等の汚れも一緒に排出することができる。なお、以上、図10〜図13において、図1〜図9と同一部分には同一符号を付してその構成を明確化した。   On the other hand, in FIG. 13, the lower part shows a part of the lower side of the heat exchanger 1, and the coolant liquid Lc or the cleaning liquid inside the shell part 2 is exposed to the lower end surface part 2 d constituting the first shell dividing part 4. An example in which a discharge hole 404 by a screw hole portion that can be discharged is provided, and a discharge hole cap 405 by a bolt that can be attached to and detached from the discharge hole 404 to close or open the discharge hole 404 is shown. Reference numeral 406 denotes a seal ring (O-ring) interposed between the lower end surface portion 2d and the discharge hole cap 405. If such a discharge hole 404 is provided, the coolant liquid Lc or the cleaning liquid in the shell portion 2 can be reliably drained, and when the first shell divided portion 4 and the second shell divided portion 5 are separated. It is possible to prevent the coolant liquid Lc or the cleaning liquid from being unnecessarily discharged to the outside, to perform the cleaning operation more smoothly, and to discharge dirt such as chips accumulated on the upper surface of the lower end surface portion 2d. 10 to 13, the same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and the configuration is clarified.

よって、このような変更実施形態を含む本実施形態に係る熱交換器1によれば、シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsの第一シェル分割部4と第二シェル分割部5に分割する分割部Pcを設け、この分割部Pcを着脱手段6により着脱可能に構成するとともに、第一シェル分割部4に、シェル部2に対する液流入口2iと液流出口2e及びコイル管部3に対する冷媒流入口3i…と冷媒流出口3e…を配設したため、熱交換器1の内部を洗浄する際には、第一シェル分割部4から第二シェル分割部5を離脱すればよく、これにより、切粉等の汚れが堆積しやすい複雑な形状のコイル管部3等であっても容易に洗浄することが可能となり、洗浄に係わる工数低減及び作業時間の短縮を図れるとともに、十分かつ確実な洗浄を行うことができる。また、シェル部2の軸方向Fsにおける中央部位Xcと下端面部2dの間にシェル部2を軸方向Fsの第一シェル分割部4と第二シェル分割部5に分割する分割部Pcを設け、この分割部Pcを着脱手段6により着脱可能に構成したため、熱交換器1のメンテナンスも容易に行うことができるとともに、故障や寿命等により熱交換器1の使用が不能になった場合であっても、一部の部品交換、即ち、第一シェル分割部4又は第二シェル分割部5のいずれか一方を交換すれば足りるため、資源節減面及びコスト面における有利性を確保できる。   Therefore, according to the heat exchanger 1 according to the present embodiment including such a modified embodiment, the shell portion 2 is placed between the central portion Xc and the lower end surface portion 2d in the axial direction Fs of the shell portion 2 in the axial direction Fs. A split part Pc that is divided into one shell split part 4 and a second shell split part 5 is provided, and the split part Pc is configured to be detachable by the attaching / detaching means 6, and the first shell split part 4 is provided with a liquid for the shell part 2. Since the refrigerant inlet 3i and the refrigerant outlet 3e with respect to the inlet 2i, the liquid outlet 2e, and the coil tube portion 3 are disposed, when the inside of the heat exchanger 1 is washed, What is necessary is just to detach | leave the 2nd shell division | segmentation part 5, and it becomes possible to wash | clean easily even the complicated shape coil pipe | tube part 3 grade | etc., Where dirt, such as a chip | tip, accumulates easily, and the man-hour regarding washing | cleaning Reduce and shorten work time Together, it can be sufficiently and reliably washed. Further, a split part Pc that splits the shell part 2 into a first shell split part 4 and a second shell split part 5 in the axial direction Fs is provided between the central part Xc in the axial direction Fs of the shell part 2 and the lower end surface part 2d. Since the divided part Pc is configured to be detachable by the attaching / detaching means 6, the heat exchanger 1 can be easily maintained, and the heat exchanger 1 cannot be used due to a failure or a lifespan. However, since it is sufficient to replace some parts, that is, one of the first shell dividing portion 4 and the second shell dividing portion 5, it is possible to secure advantages in terms of resource saving and cost.

以上、好適実施形態(変更実施形態)について詳細に説明したが、本発明は、このような実施形態に限定されるものではなく、細部の構成,形状,素材,数量等において、本発明の要旨を逸脱しない範囲で、任意に変更,追加,削除することができる。   The preferred embodiment (modified embodiment) has been described in detail above. However, the present invention is not limited to such an embodiment, and the gist of the present invention in the configuration, shape, material, quantity, and the like of details. Any change, addition, or deletion can be made without departing from.

例えば、コイル管部3の形態として、第一シェル分割部4からシェル部2の内部外周側Xfに配して上端面部2uの近傍に至る外側コイル半部7と、外側コイル半部7の上端から折返し、シェル部2の内部中心側Xiに配して第一シェル分割部4に至る内側コイル半部8により構成した例を示したが、外側コイル半部7のみで構成する場合や螺旋状ではなくジグザグ状に構成する場合など、各種形態により実施可能である。このため、流通路仕切部9は、必ずしも設けることを要しない。また、クーラント液Lcは、冷却液として使用できれば足り、水道水であってもよいし不凍液等の各種水溶液であってもよい。その他、着脱手段6,洗浄手段14,洗浄補助手段15は例示の形態に限定されるものではなく、同様の機能を有する各種形態により実施可能である。   For example, as the form of the coil tube portion 3, the outer coil half portion 7 that is arranged from the first shell dividing portion 4 to the inner outer peripheral side Xf of the shell portion 2 and reaches the vicinity of the upper end surface portion 2 u, and the upper end of the outer coil half portion 7 Although the example which comprised from the inner side coil half part 8 which turned to the inner center side Xi of the shell part 2 and reached the 1st shell division | segmentation part 4 was shown from FIG. Instead, it can be implemented in various forms such as a zigzag configuration. For this reason, the flow path partition part 9 does not necessarily need to be provided. The coolant liquid Lc may be sufficient as long as it can be used as a cooling liquid, and may be tap water or various aqueous solutions such as antifreeze liquid. In addition, the attaching / detaching means 6, the cleaning means 14, and the cleaning auxiliary means 15 are not limited to the illustrated forms, and can be implemented in various forms having the same function.

本発明に係るクーラントチラー用熱交換器は、クーラント液の流通路となるシェル部とこのシェル部に収容することにより冷媒の流通路となるコイル管部を備える各種熱交換器に適用できるとともに、例示したクーラントチラーをはじめ各種用途のクーラントチラーに利用できる。   The heat exchanger for a coolant chiller according to the present invention can be applied to various heat exchangers including a shell portion serving as a coolant fluid passage and a coil tube portion serving as a coolant passage by being accommodated in the shell portion. It can be used for coolant chillers for various purposes including the exemplified coolant chiller.

1:クーラントチラー用熱交換器,2:シェル部,2u:上端面部,2d:下端面部,2i:液流入口,2e:液流出口,3:コイル管部,3i…:冷媒流入口,3e…:冷媒流出口,4:第一シェル分割部,5:第二シェル分割部,6:着脱手段,7:外側コイル半部,8:内側コイル半部,9:流通路仕切部,11:装着部,12:被装着部,13:クランプバンド,14:洗浄手段,15:洗浄補助手段,Lc:クーラント液,Km:冷媒,Fs:軸方向,Xc:中央部位,Xf:内部外周側,Xi:内部中心側,Pc:分割部,Ms:第一設置態様,Mn:第二設置態様   1: heat exchanger for coolant chiller, 2: shell portion, 2u: upper end surface portion, 2d: lower end surface portion, 2i: liquid inlet, 2e: liquid outlet, 3: coil pipe portion, 3i ...: refrigerant inlet, 3e ...: refrigerant outlet, 4: first shell division, 5: second shell division, 6: detaching means, 7: outer coil half, 8: inner coil half, 9: flow passage partition, 11: Mounting part, 12: Mounted part, 13: Clamp band, 14: Cleaning means, 15: Cleaning auxiliary means, Lc: Coolant liquid, Km: Refrigerant, Fs: Axial direction, Xc: Central part, Xf: Inner outer peripheral side, Xi: inner center side, Pc: divided portion, Ms: first installation mode, Mn: second installation mode

Claims (9)

上端面部及び下端面部を有する円筒形に構成し、かつクーラント液の流通路を形成するシェル部と、このシェル部の内部に収容し、かつ冷媒の流通路を形成するコイル管部とを備えてなるクーラントチラー用熱交換器であって、前記シェル部の軸方向における中央部位と前記下端面部(又は前記上端面部)の間に前記シェル部を軸方向の第一シェル分割部と第二シェル分割部に分割する分割部を設け、この分割部を着脱手段により着脱可能に構成するとともに、前記第一シェル分割部に、前記シェル部に対する液流入口と液流出口及び前記コイル管部に対する冷媒流入口と冷媒流出口を配設したことを特徴とするクーラントチラー用熱交換器。   A cylindrical portion having an upper end surface portion and a lower end surface portion, and formed with a shell portion that forms a coolant passage, and a coil tube portion that is housed inside the shell portion and forms a coolant passage. A heat exchanger for a coolant chiller, wherein the shell portion is axially divided between a first shell dividing portion and a second shell dividing portion between a central portion in the axial direction of the shell portion and the lower end surface portion (or the upper end surface portion). A dividing portion is provided to divide the portion, and the dividing portion is configured to be attachable / detachable by an attaching / detaching means. A heat exchanger for a coolant chiller comprising an inlet and a refrigerant outlet. 前記コイル管部は、前記第一シェル分割部から前記シェル部の内部外周側に配して前記上端面部の近傍に至る外側コイル半部と、この外側コイル半部の上端から折返し、前記シェル部の内部中心側に配して前記第一シェル分割部に至る内側コイル半部とを備えることを特徴とする請求項1記載のクーラントチラー用熱交換器。   The coil tube portion is arranged on the inner outer peripheral side of the shell portion from the first shell split portion, and is folded from the upper end of the outer coil half portion, and is turned from the upper end of the outer coil half portion. The heat exchanger for a coolant chiller according to claim 1, further comprising: an inner coil half portion that is disposed on the inner center side of the inner coil and reaches the first shell dividing portion. 前記シェル部は、前記第一シェル分割部から軸方向上方に突出し、かつ前記外側コイル半部と前記内側コイル半部間に介在するとともに、前記上端面部の近傍に至る円筒形の流通路仕切部を備え、前記液流入口又は前記液流出口の一方を前記流通路仕切部の外側に臨ませ、かつ他方を前記流通路仕切部の内側に臨ませてなることを特徴とする請求項1又は2記載のクーラントチラー用熱交換器。   The shell portion protrudes axially upward from the first shell dividing portion, and is interposed between the outer coil half portion and the inner coil half portion, and is a cylindrical flow passage partition portion that reaches the vicinity of the upper end surface portion. The liquid inflow port or the liquid outflow port faces the outside of the flow passage partition portion and the other faces the inside of the flow passage partition portion. The heat exchanger for coolant chillers according to 2. 前記第一シェル分割部は、前記下端面部のみにより構成することを特徴とする請求項1,2又は3記載のクーラントチラー用熱交換器。   4. The heat exchanger for a coolant chiller according to claim 1, wherein the first shell dividing portion is constituted only by the lower end surface portion. 5. 前記第一シェル分割部を前記第二シェル分割部に対して下側に位置させる第一設置態様又はこの第一設置態様に対して上下を反転させることにより前記第一シェル分割部を前記第二シェル分割部に対して上側に位置させる第二設置態様可能に構成することを特徴とする請求項1〜4のいずれかに記載のクーラントチラー用熱交換器。   A first installation mode in which the first shell division part is positioned below the second shell division part, or the first shell division part is turned upside down with respect to the first installation mode. The heat exchanger for a coolant chiller according to any one of claims 1 to 4, wherein the heat exchanger for a coolant chiller according to any one of claims 1 to 4 is configured so as to be capable of being installed in a second position above the shell dividing portion. 前記着脱手段は、前記第一シェル分割部又は前記第二シェル分割部の一方に装着部を設け、かつ他方に被装着部を設けることにより、前記第一シェル分割部と前記第二シェル分割部を直接着脱可能に構成することを特徴とする請求項1〜5のいずれかに記載のクーラントチラー用熱交換器。   The attaching / detaching means includes the first shell dividing portion and the second shell dividing portion by providing a mounting portion on one of the first shell dividing portion or the second shell dividing portion and providing a mounting portion on the other. The heat exchanger for a coolant chiller according to claim 1, wherein the heat exchanger is configured to be directly detachable. 前記着脱手段は、前記第一シェル分割部と前記第二シェル分割部に対して着脱し、装着時には前記第一シェル分割部と前記第二シェル分割部間に跨がることにより前記第一シェル分割部と前記第二シェル分割部を固定可能な別体の着脱具を備えることを特徴とする請求項1〜5のいずれかに記載のクーラントチラー用熱交換器。   The attaching / detaching means attaches and detaches to and from the first shell dividing portion and the second shell dividing portion, and straddles between the first shell dividing portion and the second shell dividing portion at the time of attachment. The heat exchanger for a coolant chiller according to any one of claims 1 to 5, further comprising a separate attachment / detachment tool capable of fixing the divided portion and the second shell divided portion. 前記第一シェル分割部に対して前記第二シェル分割部の代わりに着脱し、装着した際に前記コイル管部を直接洗浄する洗浄手段を備えることを特徴とする請求項1〜7のいずれかに記載のクーラントチラー用熱交換器。   8. The apparatus according to claim 1, further comprising a cleaning unit that directly attaches and detaches the coil tube portion to the first shell divided portion instead of the second shell divided portion. The heat exchanger for coolant chillers described in 1. 前記第一シェル分割部に対して前記第二シェル分割部の代わりに着脱し、装着した際に前記コイル管部の洗浄を補助する洗浄補助手段を備えることを特徴とする請求項1〜8のいずれかに記載のクーラントチラー用熱交換器。   9. The apparatus according to claim 1, further comprising a cleaning assisting unit that assists cleaning of the coiled pipe portion when the first shell divided portion is attached to and detached from the first shell divided portion instead of the second shell divided portion. The heat exchanger for coolant chillers in any one.
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