JP2008056980A - Pretreatment electrodeposition coating apparatus - Google Patents

Pretreatment electrodeposition coating apparatus Download PDF

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JP2008056980A
JP2008056980A JP2006234591A JP2006234591A JP2008056980A JP 2008056980 A JP2008056980 A JP 2008056980A JP 2006234591 A JP2006234591 A JP 2006234591A JP 2006234591 A JP2006234591 A JP 2006234591A JP 2008056980 A JP2008056980 A JP 2008056980A
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pretreatment
liquid
heat
electrodeposition
coating apparatus
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Akio Ishimaru
昭夫 石丸
Noriaki Ojima
範昌 於島
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Parker Engineering Co Ltd
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Parker Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pretreatment electrodeposition coating apparatus in which heat energy efficiency is improved compared to that in a conventional one by solving a problem that energy efficiency in the conventional pretreatment electrodeposition coating is low because the heat transfer from an electrodeposition liquid to a pretreatment liquid is not carried out. <P>SOLUTION: The pretreatment electrodeposition coating apparatus is provided with a surplus heat transfer apparatus from the electrodeposition liquid to the pretreatment liquid. The surplus heat transfer apparatus receives surplus heat from the electrodeposition liquid and gives to the pretreatment liquid and as a result, the electrodeposition liquid is cooled to keep a proper temperature and the pretreatment liquid is heated to keep a proper temperature. The pretreatment electrodeposition apparatus has higher energy efficient compared to that in the conventional one beccause of the heat transfer from the electrodeposition liquid to the pretreatment liquid. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、前処理電着塗装装置に関するものである。 The present invention relates to a pretreatment electrodeposition coating apparatus.

前処理電着塗装装置が特許文献１等に開示されている。
前処理電着塗装装置の予備洗浄槽、脱脂槽、化成槽においては、前処理液から大気中に放出される熱を補給して処理液を３５〜４５℃の適正温度に維持するために、前処理液を加温する必用がある。他方、前処理電着塗装装置の電着槽においては、電着液を電流が流れる際にジュール熱が発生し、電着液を攪拌する際に摩擦熱が発生して、電着液から大気中に放出される熱を超える熱、すなわち余剰熱が電着液に供給されるので、電着液を２８℃前後の適正温度に維持するために、電着液を冷却し電着液から余剰熱を奪う必用がある。
従来の前処理電着塗装装置においては、前処理液の加温と、電着液の冷却とは別個独立に行われており、電着液から前処理液への熱の授受は行われていなかった。
特開平６−１７３０８７号公報 A pretreatment electrodeposition coating apparatus is disclosed in Patent Document 1 and the like.
In the preliminary washing tank, degreasing tank, and chemical conversion tank of the pretreatment electrodeposition coating apparatus, in order to replenish the heat released from the pretreatment liquid into the atmosphere and maintain the treatment liquid at an appropriate temperature of 35 to 45 ° C., It is necessary to warm the pretreatment liquid. On the other hand, in the electrodeposition tank of the pretreatment electrodeposition coating apparatus, Joule heat is generated when an electric current flows through the electrodeposition liquid, and frictional heat is generated when the electrodeposition liquid is stirred. Since heat exceeding the heat released into the electrode, that is, excess heat, is supplied to the electrodeposition liquid, the electrodeposition liquid is cooled and surplus from the electrodeposition liquid in order to maintain the electrodeposition liquid at an appropriate temperature of about 28 ° C. There is a need to take away heat.
In a conventional pretreatment electrodeposition coating apparatus, heating of the pretreatment liquid and cooling of the electrodeposition liquid are performed separately and heat is transferred from the electrodeposition liquid to the pretreatment liquid. There wasn't.
JP-A-6-173087

従来の前処理電着塗装装置には、電着液から前処理液への熱の授受が行われないので、エネルギー効率が低いという問題があった。
本発明は上記問題に鑑みてなされたものであり、従来に比べて熱エネルギー効率が向上した前処理電着塗装装置を提供することを目的とする。 The conventional pretreatment electrodeposition coating apparatus has a problem of low energy efficiency because heat is not transferred from the electrodeposition liquid to the pretreatment liquid.
The present invention has been made in view of the above problems, and an object thereof is to provide a pretreatment electrodeposition coating apparatus having improved thermal energy efficiency as compared with the conventional art.

上記目的を達成するために、本発明においては、電着液から前処理液への余剰熱授受装置を備えることを特徴とする前処理電着塗装装置を提供する。
本発明に係る前処理電着塗装装置においては、余剰熱授受装置が電着液から余剰熱を受け、前処理液に授ける。この結果、電着液は冷却されて適正温度に維持され、前処理液は加温されて適正温度に維持される。電着液から前処理液への熱の授受が行われるので、本発明に係る前処理電着塗装装置は従来に比べてエネルギー効率が高い。 In order to achieve the above object, the present invention provides a pretreatment electrodeposition coating apparatus comprising an excess heat transfer device from an electrodeposition liquid to a pretreatment liquid.
In the pretreatment electrodeposition coating apparatus according to the present invention, the surplus heat transfer device receives surplus heat from the electrodeposition liquid and imparts it to the pretreatment liquid. As a result, the electrodeposition liquid is cooled and maintained at an appropriate temperature, and the pretreatment liquid is heated and maintained at an appropriate temperature. Since heat is transferred from the electrodeposition liquid to the pretreatment liquid, the pretreatment electrodeposition coating apparatus according to the present invention is higher in energy efficiency than the conventional one.

本発明の好ましい態様においては、余剰熱授受装置は、電着液の冷却媒体と前処理液の加温媒体との間で熱の授受を行わせるヒートポンプチラーを有している。
電着液を冷却する冷却媒体の温度は１３〜２０℃であり、前処理液を加温する加温媒体の温度は４５〜５５℃である。ヒートポンプチラーを用いることにより、低温の冷却媒体から高温の加熱媒体へ支障なく熱を移動させることができる。 In a preferred embodiment of the present invention, the surplus heat transfer device has a heat pump chiller that transfers heat between the cooling medium of the electrodeposition liquid and the heating medium of the pretreatment liquid.
The temperature of the cooling medium for cooling the electrodeposition liquid is 13 to 20 ° C., and the temperature of the heating medium for heating the pretreatment liquid is 45 to 55 ° C. By using a heat pump chiller, heat can be transferred from a low-temperature cooling medium to a high-temperature heating medium without hindrance.

本発明の好ましい態様においては、前処理電着塗装装置は、前処理液を加温する加温媒体の熱の一部を直接大気中に放出する放熱装置を備えている。
電着液から大気中に放出される熱量に比べてジュール熱や摩擦熱の熱量が遥かに多いので、電着液の余剰熱は一年を通じて略一定である。一方、前処理液から大気中に放出される熱は夏季には少なく冬季には多いので、前処理液に補給すべき熱量は、夏季には少なく冬季には多い。従って、電着液の余剰熱の全量を前処理液に供給すると、夏季において前処理液に過剰な熱が補給され、前処理液の温度が適正値を超える場合を生ずる。前処理液を加温する加温媒体の熱の一部を直接大気中に放出し、電着液の余剰熱の一部を直接大気中に放出することにより、夏季に前処理液への過剰な熱補給を防止し、前処理液の温度を適正値に維持することができる。 In a preferred embodiment of the present invention, the pretreatment electrodeposition coating apparatus includes a heat dissipation device that directly releases part of the heat of the heating medium that heats the pretreatment liquid into the atmosphere.
Since the amount of Joule heat and frictional heat is much larger than the amount of heat released from the electrodeposition liquid into the atmosphere, the excess heat of the electrodeposition liquid is substantially constant throughout the year. On the other hand, since heat released from the pretreatment liquid into the atmosphere is small in summer and high in winter, the amount of heat to be supplied to the pretreatment liquid is small in summer and high in winter. Therefore, if the total amount of surplus heat of the electrodeposition liquid is supplied to the pretreatment liquid, excessive heat is replenished to the pretreatment liquid in summer, and the temperature of the pretreatment liquid exceeds an appropriate value. Excess heat to the pretreatment liquid in summer is released by releasing part of the heat of the heating medium that heats the pretreatment liquid directly into the atmosphere and releasing part of the excess heat of the electrodeposition liquid directly into the atmosphere. Therefore, the temperature of the pretreatment liquid can be maintained at an appropriate value.

本発明の好ましい態様においては、前処理電着塗装装置は、前処理液を加温する加温媒体を加熱する加熱装置を備えている。
前述の如く、電着液の余剰熱は一年を通じて略一定であり、前処理液から大気中に放出される熱は冬季には多く、前処理液に補給すべき熱量は冬季には多いので、電着液の余剰熱の全量を前処理液に供給しても、冬季においては前処理液に補給される熱が不足する場合を生ずる。前処理液を加温する加温媒体を加熱することにより、冬季に電着液の余剰熱を超える熱を前処理液に補給して、前処理液の温度を適正値に維持することができる。 In a preferred embodiment of the present invention, the pretreatment electrodeposition coating apparatus includes a heating device that heats a heating medium that heats the pretreatment liquid.
As described above, the excess heat of the electrodeposition liquid is almost constant throughout the year, and the heat released from the pretreatment liquid into the atmosphere is large in winter, and the amount of heat to be replenished in the pretreatment liquid is large in winter. Even when the entire amount of surplus heat of the electrodeposition liquid is supplied to the pretreatment liquid, there is a case where the heat replenished to the pretreatment liquid is insufficient in winter. By heating the heating medium that heats the pretreatment liquid, heat exceeding the excess heat of the electrodeposition liquid can be replenished to the pretreatment liquid in winter, and the temperature of the pretreatment liquid can be maintained at an appropriate value. .

本発明に係る前処理電着塗装装置においては、余剰熱授受装置が電着液から余剰熱を受け、前処理液に授ける。この結果、電着液は冷却されて適正温度に維持され、前処理液は加温されて適正温度に維持される。電着液から前処理液への熱の授受が行われるので、本発明に係る前処理電着塗装装置は従来に比べてエネルギー効率が高い。 In the pretreatment electrodeposition coating apparatus according to the present invention, the surplus heat transfer device receives surplus heat from the electrodeposition liquid and imparts it to the pretreatment liquid. As a result, the electrodeposition liquid is cooled and maintained at an appropriate temperature, and the pretreatment liquid is heated and maintained at an appropriate temperature. Since heat is transferred from the electrodeposition liquid to the pretreatment liquid, the pretreatment electrodeposition coating apparatus according to the present invention is higher in energy efficiency than the conventional one.

本発明の実施例に係る塗装前処理装置を説明する。
図１に示すように、前処理電着塗装装置Ａは、塗装前処理装置Ａ’と電着塗装装置Ａ”とを備えている。塗装前処理装置Ａ’は、被処理物の移動方向に沿って上流から下流へ向けて順次配設された予備洗浄槽１、脱脂槽２、化成槽３を備えている。脱脂槽２と化成槽３との間に図示しない水洗槽、表面調整槽が配設され、化成槽３の下流に水洗槽が配設されている。電着塗装装置Ａ”は、被処理物の移動方向に沿って塗装前処理装置Ａ’の下流に配設されている。電着塗装装置Ａ”は、電着槽４を備えている。電着槽４の下流に図示しない水洗槽が配設されている。 A coating pretreatment apparatus according to an embodiment of the present invention will be described.
As shown in FIG. 1, the pretreatment electrodeposition coating apparatus A includes a pretreatment coating apparatus A ′ and an electrodeposition coating apparatus A ″. The pretreatment coating apparatus A ′ is arranged in the moving direction of the workpiece. A pre-cleaning tank 1, a degreasing tank 2, and a chemical conversion tank 3 that are sequentially arranged from upstream to downstream along the surface are provided between the degreasing tank 2 and the chemical conversion tank 3. The washing tank is disposed downstream of the chemical conversion tank 3. The electrodeposition coating apparatus A ″ is disposed downstream of the pretreatment apparatus A ′ along the moving direction of the workpiece. . The electrodeposition coating apparatus A ″ includes an electrodeposition tank 4. A water washing tank (not shown) is disposed downstream of the electrodeposition tank 4.

予備洗浄槽１内の前処理液を槽外へ導いた後槽内へ戻す循環路１ａが予備洗浄槽１に付設されている。循環路１ａと同様の循環路２ａ、３ａが脱脂槽２、化成槽３に付設されている。
前処理液を加温する加温媒体が循環して流れる加温媒体回路５が配設されている。加温媒体回路５を流れる加温媒体と循環路１ａ、２ａ、３ａを流れる前処理液との間で熱交換を行わせる熱交換機６、７、８が配設されている。
放熱器９が加温媒体回路５に接続されている。熱交換機６、７、８、放熱器９は、加温媒体回路５内の加温媒体流に関して、互いに並列に配設されている。加温媒体の熱交換機６、７、８を経由する流れを切り入りするバルブ１０と、加温媒体の放熱器９を経由する流れを切り入りするバルブ１１とが配設されている。 A circulation path 1 a for guiding the pretreatment liquid in the preliminary cleaning tank 1 to the outside of the tank and returning it to the tank is attached to the preliminary cleaning tank 1. Circulating paths 2 a and 3 a similar to the circulating path 1 a are attached to the degreasing tank 2 and the chemical conversion tank 3.
A heating medium circuit 5 in which a heating medium for heating the pretreatment liquid circulates is provided. Heat exchangers 6, 7, and 8 that perform heat exchange between the heating medium that flows through the heating medium circuit 5 and the pretreatment liquid that flows through the circulation paths 1 a, 2 a, and 3 a are disposed.
A radiator 9 is connected to the heating medium circuit 5. The heat exchangers 6, 7, 8 and the radiator 9 are arranged in parallel with each other with respect to the heating medium flow in the heating medium circuit 5. A valve 10 for cutting the flow through the heating medium heat exchangers 6, 7, and 8 and a valve 11 for cutting the flow through the heating medium radiator 9 are provided.

電着槽４内の前処理液を槽外へ導いた後槽内へ戻す循環路４ａが電着槽４に付設されている。
電着液を冷却する冷却媒体が循環して流れる冷却媒体回路１２が配設されている。冷却媒体回路１２を流れる冷却媒体と循環路４ａを流れる電着液との間で熱交換を行わせる熱交換機１３が配設されている。 A circulation path 4 a for guiding the pretreatment liquid in the electrodeposition tank 4 to the outside of the tank and returning it to the tank is attached to the electrodeposition tank 4.
A cooling medium circuit 12 in which a cooling medium for cooling the electrodeposition liquid circulates is provided. A heat exchanger 13 is provided for heat exchange between the cooling medium flowing through the cooling medium circuit 12 and the electrodeposition liquid flowing through the circulation path 4a.

ヒートポンプチラー１４が配設されている。ヒートポンプチラー１４は、配管を介して圧縮機１４ａ、凝縮器１４ｂ、膨張弁１４ｃ、蒸発器１４ｄが環状に順次接続された冷媒回路を備えている。ヒートポンプチラー１４の冷媒回路を代替フロン等の冷媒が流れる。
加温媒体回路５はヒートポンプチラー１４の凝縮器１４ｂを経由しており、冷却媒体回路１２はヒートポンプチラー１４の蒸発器１４ｄを経由している。 A heat pump chiller 14 is provided. The heat pump chiller 14 includes a refrigerant circuit in which a compressor 14a, a condenser 14b, an expansion valve 14c, and an evaporator 14d are sequentially connected via a pipe. A refrigerant such as alternative chlorofluorocarbon flows through the refrigerant circuit of the heat pump chiller 14.
The heating medium circuit 5 passes through the condenser 14b of the heat pump chiller 14, and the cooling medium circuit 12 passes through the evaporator 14d of the heat pump chiller 14.

前処理電着塗装装置Ａの作動を説明する。
予備洗浄槽１、脱脂槽２、化成槽３においては、前処理液から大気中に放出される熱を補給して処理液を３５〜４５℃の適正温度に維持するために、前処理液を加温する必用がある。他方、電着槽４においては、電着液を電流が流れる際にジュール熱が発生し、電着液を攪拌する際に摩擦熱が発生して、電着液から大気中に放出される熱を超える熱、すなわち余剰熱が電着液に供給されるので、電着液を２８℃前後の適正温度に維持するために、電着液を冷却し電着液から余剰熱を奪う必用がある。 The operation of the pretreatment electrodeposition coating apparatus A will be described.
In the preliminary cleaning tank 1, the degreasing tank 2, and the chemical conversion tank 3, in order to replenish the heat released from the pretreatment liquid into the atmosphere and maintain the treatment liquid at an appropriate temperature of 35 to 45 ° C., the pretreatment liquid is used. Necessary to warm up. On the other hand, in the electrodeposition tank 4, Joule heat is generated when an electric current flows through the electrodeposition liquid, frictional heat is generated when the electrodeposition liquid is stirred, and heat released from the electrodeposition liquid to the atmosphere. Therefore, in order to maintain the electrodeposition liquid at an appropriate temperature of about 28 ° C., it is necessary to cool the electrodeposition liquid and take away the excess heat from the electrodeposition liquid. .

前処理電着塗装装置Ａにおいては、循環路４ａを流れる電着液と冷却媒体回路１２を流れる冷却媒体との間で熱交換器１３を介して熱交換が行われる。この結果、余剰熱は電着液から冷却媒体へ移動する。余剰熱が奪われることにより、電着液は冷却され、２８℃前後の適正温度に維持される。電着液から余剰熱を奪った冷却媒体は１８〜２０℃まで加温される。
ヒートポンプチラー１４の蒸発器１４ｄを経由する冷却媒体と、ヒートポンプチラー１４の蒸発器１４ｄを流れるヒートポンプチラー１４の冷媒との間で熱交換が行われ、冷却媒体回路１２を流れる冷却媒体からヒートポンプチラー１４の冷媒へ余剰熱が移動する。余剰熱が奪われることにより、冷却媒体は１３〜１５℃まで冷却される。 In the pretreatment electrodeposition coating apparatus A, heat exchange is performed between the electrodeposition liquid flowing through the circulation path 4 a and the cooling medium flowing through the cooling medium circuit 12 via the heat exchanger 13. As a result, surplus heat moves from the electrodeposition liquid to the cooling medium. By removing excess heat, the electrodeposition liquid is cooled and maintained at an appropriate temperature of about 28 ° C. The cooling medium deprived of excess heat from the electrodeposition liquid is heated to 18 to 20 ° C.
Heat exchange is performed between the cooling medium passing through the evaporator 14d of the heat pump chiller 14 and the refrigerant of the heat pump chiller 14 flowing through the evaporator 14d of the heat pump chiller 14, and the heat pump chiller 14 is transferred from the cooling medium flowing through the cooling medium circuit 12. Surplus heat moves to the refrigerant. By removing excess heat, the cooling medium is cooled to 13 to 15 ° C.

冷却媒体回路１２を流れる冷却媒体から余剰熱を奪って気化したヒートポンプチラー１４の冷媒は、圧縮機１４ａにより圧縮された後、凝縮器１４ｂへ流入する。凝縮器１４ｂを流れるヒートポンプチラー１４の冷媒と、凝縮器１４ｂを経由する加温媒体との間で熱交換が行われ、ヒートポンプチラー１４の冷媒から加温媒体回路５を流れる加温媒体へ余剰熱が移動する。余剰熱が奪われたヒートポンプチラー１４の冷媒は液化され、膨張弁１４ｃを経由した後蒸発器１４ｄへ流入する。ヒートポンプチラー１４の冷媒から余剰熱を奪った加温媒体は５０〜５５℃まで加温される。 The refrigerant of the heat pump chiller 14 that has evaporated excess heat from the cooling medium flowing through the cooling medium circuit 12 is compressed by the compressor 14a and then flows into the condenser 14b. Heat exchange is performed between the refrigerant of the heat pump chiller 14 flowing through the condenser 14b and the heating medium passing through the condenser 14b, and surplus heat is transferred from the refrigerant of the heat pump chiller 14 to the heating medium flowing through the heating medium circuit 5. Move. The refrigerant of the heat pump chiller 14 deprived of excess heat is liquefied and flows into the evaporator 14d after passing through the expansion valve 14c. The heating medium deprived of excess heat from the refrigerant of the heat pump chiller 14 is heated to 50 to 55 ° C.

加温媒体回路５を流れる加温媒体と循環路１ａ、２ａ、３ａを流れる前処理液との間で熱交換器６、７、８を介して熱交換が行われる。この結果、余剰熱は加温媒体から前処理液へ移動する。余剰熱が奪われることにより加温媒体は４５〜５０℃まで冷却される。加温媒体から余剰熱を奪うことにより前処理液は３５〜４５℃の適正温度に維持される。 Heat exchange is performed between the heating medium flowing in the heating medium circuit 5 and the pretreatment liquid flowing in the circulation paths 1a, 2a, and 3a via the heat exchangers 6, 7, and 8. As a result, surplus heat moves from the heating medium to the pretreatment liquid. The heating medium is cooled to 45 to 50 ° C. by removing excess heat. The pretreatment liquid is maintained at an appropriate temperature of 35 to 45 ° C. by removing excess heat from the heating medium.

熱交換器６、７、８、１３、加温媒体回路５、冷却媒体回路１２、ヒートポンプラチー１４により構成される余剰熱授受装置を介して、電着液から前処理液へ余剰熱の授受が行われるので、前処理電着塗装装置Ａは従来の前処理電着塗装装置に比べてエネルギー効率が高い。 Excess heat transfer from the electrodeposition liquid to the pretreatment liquid via the surplus heat transfer device constituted by the heat exchangers 6, 7, 8, 13, the heating medium circuit 5, the cooling medium circuit 12, and the heat pump latch 14 Therefore, the pretreatment electrodeposition coating apparatus A is higher in energy efficiency than the conventional pretreatment electrodeposition coating apparatus.

電着液を冷却する冷却媒体の温度は１３〜２０℃であり、前処理液を加温する加温媒体の温度は４５〜５５℃である。ヒートポンプチラー１４を用いることにより、低温の冷却媒体から高温の加熱媒体へ支障なく余剰熱を移動させることができる。 The temperature of the cooling medium for cooling the electrodeposition liquid is 13 to 20 ° C., and the temperature of the heating medium for heating the pretreatment liquid is 45 to 55 ° C. By using the heat pump chiller 14, excess heat can be transferred from a low-temperature cooling medium to a high-temperature heating medium without hindrance.

電着液から大気中に放出される熱量に比べてジュール熱や摩擦熱の熱量が遥かに多いので、電着液の余剰熱は一年を通じて略一定である。一方、前処理液から大気中に放出される熱は夏季には少なく冬季には多いので、前処理液に補給すべき熱量は、夏季には少なく冬季には多い。従って、電着液の余剰熱の全量を前処理液に供給すると、夏季において前処理液に過剰な熱が補給され、前処理液の温度が適正値を超える場合を生ずる。
前処理電着塗装装置Ａにおいては、夏季には、バルブ１０、１１を交互に開閉して、加温媒体を放熱器９へ適時導き、電着液から冷却媒体とヒートポンプチラー１４の冷媒とを介して加温媒体へ移動してきた余剰熱の一部を、直接大気中へ放出する。この結果、夏季に前処理液への過剰な熱補給が防止され、前処理液の温度が適正値に維持される。 Since the amount of Joule heat and frictional heat is much larger than the amount of heat released from the electrodeposition liquid into the atmosphere, the excess heat of the electrodeposition liquid is substantially constant throughout the year. On the other hand, since heat released from the pretreatment liquid into the atmosphere is small in summer and high in winter, the amount of heat to be supplied to the pretreatment liquid is small in summer and high in winter. Therefore, if the total amount of surplus heat of the electrodeposition liquid is supplied to the pretreatment liquid, excessive heat is replenished to the pretreatment liquid in summer, and the temperature of the pretreatment liquid exceeds an appropriate value.
In the pretreatment electrodeposition coating apparatus A, in the summer, the valves 10 and 11 are alternately opened and closed to guide the heating medium to the radiator 9 in a timely manner, and the cooling medium and the refrigerant of the heat pump chiller 14 are removed from the electrodeposition liquid. Part of the excess heat that has moved to the heating medium through the heat is released directly into the atmosphere. As a result, excessive heat supply to the pretreatment liquid is prevented in summer, and the temperature of the pretreatment liquid is maintained at an appropriate value.

図１に一点鎖線で示すように、加温冷媒回路５を流れる加温媒体を加熱する加熱装置１５、１６、１７を配設しても良い。
前述の如く、電着液の余剰熱は一年を通じて略一定であり、前処理液から大気中に放出される熱は冬季には多く、前処理液に補給すべき熱量は冬季には多いので、電着液の余剰熱の全量を前処理液に供給しても、冬季においては前処理液に補給される熱が不足する場合を生ずる。前処理液を加温する加温媒体を加熱することにより、冬季に電着液の余剰熱を超える熱を前処理液に補給して、前処理液の温度を適正値に維持することができる。 As indicated by a one-dot chain line in FIG. 1, heating devices 15, 16, and 17 that heat the heating medium flowing through the heating refrigerant circuit 5 may be provided.
As described above, the excess heat of the electrodeposition liquid is almost constant throughout the year, and the heat released from the pretreatment liquid into the atmosphere is large in winter, and the amount of heat to be replenished in the pretreatment liquid is large in winter. Even when the entire amount of surplus heat of the electrodeposition liquid is supplied to the pretreatment liquid, there is a case where the heat replenished to the pretreatment liquid is insufficient in winter. By heating the heating medium that heats the pretreatment liquid, heat exceeding the excess heat of the electrodeposition liquid can be replenished to the pretreatment liquid in winter, and the temperature of the pretreatment liquid can be maintained at an appropriate value. .

本発明は、前処理電着塗装装置に広く利用可能である。 The present invention is widely applicable to a pretreatment electrodeposition coating apparatus.

本発明の実施例に係る前処理電着塗装装置のブロック図である。1 is a block diagram of a pretreatment electrodeposition coating apparatus according to an embodiment of the present invention.

符号の説明Explanation of symbols

Ａ 前処理電着塗装装置
Ａ’塗装前処理装置
Ａ”電着塗装装置
１ 予備洗浄槽
２ 脱脂槽
３ 化成槽
４ 電着槽
５ 加温媒体回路
６、７、８、１３ 熱交換器
９ 放熱器
１０、１１ バルブ
１２ 冷却媒体回路
１４ ヒートポンプチラー A Pretreatment electrodeposition coating apparatus A 'Prepainting coating apparatus A "Electrodeposition coating apparatus 1 Preliminary cleaning tank 2 Degreasing tank 3 Chemical conversion tank 4 Electrodeposition tank 5 Heating medium circuit 6, 7, 8, 13 Heat exchanger 9 Heat dissipation 10, 11 Valve 12 Cooling medium circuit 14 Heat pump chiller

Claims (4)

電着液から前処理液への余剰熱授受装置を備えることを特徴とする前処理電着塗装装置。 A pretreatment electrodeposition coating apparatus comprising a surplus heat transfer device from an electrodeposition liquid to a pretreatment liquid. 余剰熱授受装置は、電着液の冷却媒体と前処理液の加温媒体との間で熱の授受を行わせるヒートポンプチラーを有していることを特徴とする請求項１に記載の前処理電着塗装装置。 The pretreatment according to claim 1, wherein the surplus heat transfer device includes a heat pump chiller that transfers heat between the cooling medium of the electrodeposition liquid and the heating medium of the pretreatment liquid. Electrodeposition coating equipment. 前記加温媒体の熱の一部を直接大気中に放出する放熱装置を備えていることを特徴とする請求項２に記載の前処理電着塗装装置。 The pretreatment electrodeposition coating apparatus according to claim 2, further comprising a heat radiating device that directly releases part of heat of the heating medium into the atmosphere. 前記加温媒体を加熱する加熱装置を備えていることを特徴とする請求項２又は３に記載の前処理電着塗装装置。 The pretreatment electrodeposition coating apparatus according to claim 2, further comprising a heating device that heats the heating medium.
JP2006234591A 2006-08-30 2006-08-30 Pretreatment electrodeposition coating apparatus Pending JP2008056980A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010133025A (en) * 2009-11-16 2010-06-17 Chubu Electric Power Co Inc Electrodeposition coating device
JP2011058081A (en) * 2009-09-14 2011-03-24 Taikisha Ltd Electrodeposition coating equipment
JP2011153342A (en) * 2010-01-26 2011-08-11 Chubu Electric Power Co Inc Electrodeposition coating apparatus
JP2014129610A (en) * 2014-04-07 2014-07-10 Chubu Electric Power Co Inc Electrodeposition coating apparatus
JP2015180778A (en) * 2015-05-14 2015-10-15 中部電力株式会社 Starting device, and starting and stopping device for electrodeposition coating device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974298A (en) * 1982-10-20 1984-04-26 Mayekawa Mfg Co Ltd Electrodeposition painting device
JPH02243797A (en) * 1989-03-16 1990-09-27 Mayekawa Mfg Co Ltd Electrodeposition coating device utilizing heat pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5974298A (en) * 1982-10-20 1984-04-26 Mayekawa Mfg Co Ltd Electrodeposition painting device
JPH02243797A (en) * 1989-03-16 1990-09-27 Mayekawa Mfg Co Ltd Electrodeposition coating device utilizing heat pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011058081A (en) * 2009-09-14 2011-03-24 Taikisha Ltd Electrodeposition coating equipment
JP2010133025A (en) * 2009-11-16 2010-06-17 Chubu Electric Power Co Inc Electrodeposition coating device
JP2011153342A (en) * 2010-01-26 2011-08-11 Chubu Electric Power Co Inc Electrodeposition coating apparatus
JP2014129610A (en) * 2014-04-07 2014-07-10 Chubu Electric Power Co Inc Electrodeposition coating apparatus
JP2015180778A (en) * 2015-05-14 2015-10-15 中部電力株式会社 Starting device, and starting and stopping device for electrodeposition coating device

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