JP3975218B2 - Plastic molding machine cooling system - Google Patents

Plastic molding machine cooling system Download PDF

Info

Publication number
JP3975218B2
JP3975218B2 JP2005300775A JP2005300775A JP3975218B2 JP 3975218 B2 JP3975218 B2 JP 3975218B2 JP 2005300775 A JP2005300775 A JP 2005300775A JP 2005300775 A JP2005300775 A JP 2005300775A JP 3975218 B2 JP3975218 B2 JP 3975218B2
Authority
JP
Japan
Prior art keywords
cooling
water
cooling water
temperature
refrigerator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2005300775A
Other languages
Japanese (ja)
Other versions
JP2007106045A (en
Inventor
稔 荒本
Original Assignee
株式会社カンネツ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社カンネツ filed Critical 株式会社カンネツ
Priority to JP2005300775A priority Critical patent/JP3975218B2/en
Publication of JP2007106045A publication Critical patent/JP2007106045A/en
Application granted granted Critical
Publication of JP3975218B2 publication Critical patent/JP3975218B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

本発明は、プラスチック成形機の冷却システムに関する。   The present invention relates to a cooling system for a plastic molding machine.

従来、プラスチック成形機は、油圧駆動式が主流であり（例えば、特許文献１参照）、オイルポンプにより昇圧された油圧を駆動源として、金型の開閉、樹脂の射出注入に必要な動作が行われ、このときオイルポンプの駆動により作動油が昇温される。そこで、昇温を防止するためにオイルクーラが設けられている。一般的に、油圧駆動式のプラスチック成形機では、オイルクーラ，金型，ホッパー下の３箇所が冷却・温調を必要としている。プラスチック成形工場では、屋内の成形機に対応して屋外に冷却塔が設けられており、この冷却塔で冷却された冷却水が、直接的にあるいは冷凍機付水冷却機（チラー）を経由してオイルクーラ，金型，ホッパー下に送られ、冷却が行われている。
最近では、プラスチック成形の省エネルギー化による製造コスト低減や高精度化を目的として、プラスチック成形機が、従来の油圧駆動式から電動モータ駆動式へと急速に変化してきている。プラスチック成形機を電動モータ駆動式にすることによって、油圧駆動式で使用されていたオイルクーラが必要なくなり、冷却熱量負荷が少なくなる。
また、最近のプラスチック成形品では、精密成形品が多くなってきている。精密成形品は、通常の成形品より高い金型温度（例えば60℃〜80℃）で成形するものが多く、そのために冷却水温が高くても成形が可能になっている。
特開２００１−３００９８３号公報 Conventionally, a plastic molding machine has been mainly driven by a hydraulic drive (see, for example, Patent Document 1), and operations necessary for opening / closing a mold and injecting resin are performed using a hydraulic pressure boosted by an oil pump as a drive source. At this time, the hydraulic oil is heated by driving the oil pump. Therefore, an oil cooler is provided to prevent temperature rise. In general, in a hydraulically driven plastic molding machine, three locations under the oil cooler, mold, and hopper require cooling and temperature control. In plastic molding plants, cooling towers are installed outdoors corresponding to indoor molding machines, and the cooling water cooled by these cooling towers passes directly or via a water cooler with a refrigerator (chiller). Then, it is sent under the oil cooler, mold and hopper for cooling.
In recent years, plastic molding machines have been rapidly changing from the conventional hydraulic drive type to the electric motor drive type for the purpose of reducing the manufacturing cost and increasing the accuracy by saving energy in plastic molding. By making the plastic molding machine an electric motor drive type, the oil cooler used in the hydraulic drive type is not necessary, and the cooling heat load is reduced.
In recent plastic molded products, precision molded products are increasing. Many precision molded products are molded at a mold temperature (for example, 60 ° C. to 80 ° C.) higher than that of a normal molded product, so that molding is possible even when the cooling water temperature is high.
Japanese Patent Laid-Open No. 2001-300098

このように、最近のプラスチック成形機では、冷却熱量負荷が少なくなってきているにもかかわらず、冷却システムは、大きな冷却熱量負荷に耐え得る従来のシステムを使用していたため、無駄が生じていた。
また、従来使用されてきた冷却塔には、開放式冷却塔と密閉式冷却塔が存在するが、開放式冷却塔では、空気中からの汚染物質や藻等の発生によって冷却水中の不純物が濃縮蓄積して機器に悪影響を及ぼすという問題点があった。また、密閉式冷却塔では、冷却水が大気に触れない分、冷却水中に不純物が蓄積するのを防止できるが、密閉式冷却塔内に散水用ポンプとその散布水を循環させる配管が存在しているので、構造が複雑であった。さらに、散布水を補充しなければならないという問題点があった。
また、従来の冷却システムは、季節，時間帯による温度変化や寒冷地における使用等で外気温度が０℃以下になった場合、配管内の冷却水をヒータにて温めながら循環させ、冷却水の凍結防止を図っていた。しかしながら、ヒータの使用は、動かすのに電気代等の多くのコストがかかるという欠点があった。
そこで、本発明は、従来の冷却塔を必要とせず、省エネルギー化を図り得るプラスチック成形機用の冷却システムを提供することを目的とする。 In this way, in recent plastic molding machines, although the cooling heat load has been reduced, the cooling system has been wasted because a conventional system that can withstand a large cooling heat load is used. .
In addition, the cooling towers conventionally used include an open cooling tower and a closed cooling tower. In the open cooling tower, impurities in the cooling water are concentrated due to generation of pollutants and algae from the air. There was a problem of accumulating and adversely affecting the equipment. In addition, the closed cooling tower can prevent impurities from accumulating in the cooling water as much as the cooling water does not come into contact with the atmosphere, but there are pipes for circulating the watering pump and the spray water in the closed cooling tower. The structure was complicated. Furthermore, there was a problem that the spray water had to be replenished.
In addition, the conventional cooling system circulates the cooling water in the piping while warming it with a heater when the outside air temperature becomes 0 ° C or less due to temperature change depending on the season and time of day or use in cold districts, etc. I tried to prevent freezing. However, the use of a heater has a drawback in that it requires a lot of costs such as electricity costs to move.
Accordingly, an object of the present invention is to provide a cooling system for a plastic molding machine that does not require a conventional cooling tower and can save energy.

上記の目的を達成するために、本発明に係るプラスチック成形機の冷却システムは、冷却水を所定の温度に調整してプラスチック成形機に供給する冷却調整手段を備え、上記冷却調整手段は、上記冷却水を貯留する冷却水タンクと、該冷却水が通る水・空気熱交換器に室外空気を直接的に当てて該冷却水を冷却する空冷式熱交換ユニットと、冷媒・水熱交換器にて該冷却水を冷却する空冷式冷凍機付水冷却機と、を有し、さらに、上記冷却水と外気温度を監視・比較し、上記冷却水を所定の冷却設定温度に維持するように制御すると共に、該冷却設定温度よりも高く設定した第１切換温度よりも外気温度が低い場合に上記熱交換ユニットを使用し、かつ、上記冷却設定温度よりも低く設定した第２切換温度よりも外気温度が高い場合に上記冷凍機付水冷却機を使用し、そして、上記第１切換温度と上記第２切換温度の温度範囲で、上記熱交換ユニットと上記冷凍機付水冷却機とを同時運転するように、制御する、制御手段を、上記冷却手段が具備している。 In order to achieve the above object, a cooling system for a plastic molding machine according to the present invention includes cooling adjustment means for adjusting cooling water to a predetermined temperature and supplying the cooling water to the plastic molding machine, and the cooling adjustment means includes the above-described cooling adjustment means. A cooling water tank that stores cooling water, an air-cooling heat exchange unit that cools the cooling water by directly applying outdoor air to a water / air heat exchanger through which the cooling water passes, and a refrigerant / water heat exchanger And a water cooler with an air-cooled refrigerator that cools the cooling water, and further monitors and compares the cooling water with the outside air temperature, and controls the cooling water to maintain a predetermined cooling set temperature. In addition, when the outside air temperature is lower than the first switching temperature set higher than the cooling set temperature, the heat exchange unit is used, and the outside air exceeds the second switching temperature set lower than the cooling set temperature. If the temperature is high, Using the machine with water cooler, and in the temperature range of the first switching temperature and the second switching temperature, so as to simultaneously operated and the heat exchanger unit and the refrigerator with water cooler controls, The cooling means is provided with the control means .

また、上記冷却調整手段は、システム全体休止状態下で、上記冷却水を上記冷却水タンクと上記熱交換ユニットと上記冷凍機付水冷却機に循環させる駆動エンジン付の臨時循環ポンプと、該駆動エンジンの排熱を凍結防止用熱量とするために該冷却水を上記冷却水タンクと該駆動エンジンのラジエータとの間で循環させる排熱活用補助ポンプと、を有する凍結防止手段を備えたものである。 In addition , the cooling adjustment means includes a temporary circulation pump with a drive engine that circulates the cooling water to the cooling water tank, the heat exchange unit, and the water cooler with a refrigerator, while the entire system is in a halt state, and the drive In order to make the exhaust heat of the engine into the amount of heat for freezing prevention, it is provided with anti-freezing means having an exhaust heat utilization auxiliary pump for circulating the cooling water between the cooling water tank and the radiator of the driving engine. is there.

本発明は、次のような著大な効果を奏する。
本発明に係る冷却システムは、従来の冷却塔の代わりに熱交換ユニットを使用し、従来の冷却塔に備わっていた散水ポンプ，散布水を循環させる配管等を省略することができ、冷却システムの簡素化を図り得る。また、散水ポンプ等を駆動させるエネルギーが必要なくなるので、省エネルギー化を図り得る。
また、冷凍機付水冷却機を熱交換ユニットと併用して使用することによって、外気温度が冷却設定温度より高くなる場合にも、対応することができる。
また、制御手段にて、熱交換ユニット単独で冷却可能な温度範囲では、多くの電力を消費する冷凍機付水冷却機をなるべく使用しないようにでき、より省エネルギー化を図り得る。 The present invention has the following remarkable effects.
The cooling system according to the present invention uses a heat exchange unit instead of the conventional cooling tower, and can omit the watering pump, the piping for circulating the sprayed water, etc., provided in the conventional cooling tower. Simplification can be achieved. In addition, energy for driving the watering pump or the like is not necessary, so that energy saving can be achieved.
Further, by using the water cooler with a refrigerator in combination with the heat exchange unit, it is possible to cope with the case where the outside air temperature becomes higher than the cooling set temperature.
Further, in the temperature range in which the heat can be cooled by the heat exchange unit alone by the control means, the water cooler with a refrigerator that consumes much electric power can be avoided as much as possible, and energy saving can be further achieved.

また、凍結防止手段を使用する際、駆動エンジンの排熱を利用して冷却水を温めるので、別途ヒータを使用して冷却水を温めていた従来と比較して、省エネルギー化を図ることができる。   In addition, when using the freeze prevention means, the cooling water is warmed using the exhaust heat of the drive engine, so that energy saving can be achieved as compared with the conventional case where the cooling water is warmed using a separate heater. .

以下、実施の形態を示す図面に基づき、本発明を詳説する。図１に於て、本発明の第１の実施の形態に係る冷却システムを示す。
この第１実施形態に係る冷却システムは、冷却水Ｍを所定の温度に調整してプラスチック成形機２に供給する冷却調整手段３を備えている（なお、本発明において冷却水Ｍとは、通常の水に加えてケミカルクーラントも含むものとする）。
プラスチック成形機２は、例えば電動モータ駆動式が好ましく使用され、外部に設けられたヒータにより加熱される加熱シリンダ46と、加熱シリンダ46の内部に固形のプラスチック原料樹脂を導入するためのホッパー47と、加熱シリンダ46とホッパー47との間に設けられたホッパー下冷却部45と、金型を冷却する金型冷却部48, 48と、金型の開閉及び樹脂の射出動作を行なう駆動手段等を有している。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments. FIG. 1 shows a cooling system according to a first embodiment of the present invention.
The cooling system according to the first embodiment includes cooling adjusting means 3 that adjusts the cooling water M to a predetermined temperature and supplies the cooling water M to the plastic molding machine 2 (in the present invention, the cooling water M is usually In addition to water, chemical coolant should also be included).
For example, an electric motor drive type is preferably used as the plastic molding machine 2, and a heating cylinder 46 heated by a heater provided outside, and a hopper 47 for introducing a solid plastic raw material resin into the heating cylinder 46, Hopper lower cooling section 45 provided between heating cylinder 46 and hopper 47, mold cooling sections 48 and 48 for cooling the mold, driving means for opening and closing the mold and injecting resin, etc. Have.

冷却調整手段３は、冷却水Ｍを貯留する冷却水タンク４と、冷却水Ｍが通る水・空気熱交換器５に室外空気を直接的に当てて冷却水Ｍを冷却する空冷式熱交換ユニット６と、冷媒・水熱交換器11にて冷却水Ｍを冷却する空冷式冷凍機付水冷却機７と、を有している。 冷却水タンク４の底部には、送水ポンプ17によって冷却水Ｍをプラスチック成形機２へ送るための送り配管15の一端が接続されている。送り配管15の他端は、プラスチック成形機２のホッパー下冷却部45と金型冷却部48, 48に接続され、冷却水Ｍがそこに送られるようになっている。なお、図１中に２点鎖線にて示すように、温調ユニット49を介設して、金型冷却部48, 48に常に一定の温度と流量を送り、精密成形を安定して行うようにすることが望ましい。
また、ホッパー下冷却部45と金型冷却部48, 48で昇温された冷却水Ｍは、戻り配管16を通じて、冷却水タンク４へ戻されるようになっている。
また、冷却水タンク４には、タンク内水温センサ35が付設されている。 The cooling adjustment means 3 includes a cooling water tank 4 that stores the cooling water M, and an air-cooled heat exchange unit that cools the cooling water M by directly applying outdoor air to the water / air heat exchanger 5 through which the cooling water M passes. 6 and a water cooler 7 with an air-cooled refrigerator that cools the cooling water M with the refrigerant / water heat exchanger 11. One end of a feed pipe 15 for sending the coolant M to the plastic molding machine 2 by a water feed pump 17 is connected to the bottom of the coolant tank 4. The other end of the feed pipe 15 is connected to the hopper lower cooling section 45 and the mold cooling sections 48 and 48 of the plastic molding machine 2 so that the cooling water M is sent there. As indicated by the two-dot chain line in FIG. 1, a temperature control unit 49 is interposed to constantly send a constant temperature and flow rate to the mold cooling sections 48 and 48 so that precise molding can be performed stably. It is desirable to make it.
The cooling water M heated by the lower hopper cooling part 45 and the mold cooling parts 48, 48 is returned to the cooling water tank 4 through the return pipe 16.
The cooling water tank 4 is provided with a tank water temperature sensor 35.

ここで、空冷式熱交換ユニット６は、上記水・空気熱交換器５と、送風機18と、を有している。水・空気熱交換器５は、例えば、蛇行状の配管に多数枚の放熱フィンが付設された構造となっている。この水・空気熱交換器５は、冷却水タンク４と配管19, 20にて接続されている。そして、第１通常循環ポンプ21にて、水・空気熱交換器５と冷却水タンク４との間で冷却水Ｍの循環が行なわれる。送風機18は、ファンモータ22にて駆動され、水・空気熱交換器５に室外空気を当てるようになっている。つまり、空冷式熱交換ユニット６は、冷却水タンク４から導かれた冷却水Ｍを直接的に冷却するものであって、冷媒を介して冷却水Ｍを冷やすものではない。従って、冷媒を循環させる配管は備わっていないし、冷媒ガスを圧縮させるための圧縮機も備わっていない。このため、空冷式熱交換ユニット６の構造は、簡単なものとなっている。また、電力を消費するものは、ファンモータ22のみであるので、電力消費量が非常に小さいものとなっている。
空冷式熱交換ユニット６には、外気温度センサ32が付設され、空冷式熱交換ユニット６の水・空気熱交換器５へ冷却水Ｍを送る配管19の途中には、凍結防止温度センサ33が付設されている。また、空冷式熱交換ユニット６から冷却水タンク４へ冷却水Ｍを送る配管20の途中には、冷却水温度センサ34が付設されている。 Here, the air-cooled heat exchange unit 6 includes the water / air heat exchanger 5 and the blower 18. The water / air heat exchanger 5 has, for example, a structure in which a large number of radiation fins are attached to a meandering pipe. The water / air heat exchanger 5 is connected to the cooling water tank 4 through pipes 19 and 20. The first normal circulation pump 21 circulates the cooling water M between the water / air heat exchanger 5 and the cooling water tank 4. The blower 18 is driven by a fan motor 22 and applies outdoor air to the water / air heat exchanger 5. That is, the air-cooling heat exchange unit 6 directly cools the cooling water M guided from the cooling water tank 4 and does not cool the cooling water M via the refrigerant. Therefore, no piping for circulating the refrigerant is provided, and no compressor for compressing the refrigerant gas is provided. For this reason, the structure of the air-cooled heat exchange unit 6 is simple. Moreover, since only the fan motor 22 consumes power, the power consumption is very small.
The air-cooling heat exchange unit 6 is provided with an outside air temperature sensor 32, and an anti-freezing temperature sensor 33 is provided in the middle of the pipe 19 that sends the cooling water M to the water / air heat exchanger 5 of the air-cooling heat exchange unit 6. It is attached. A cooling water temperature sensor 34 is attached in the middle of the pipe 20 that sends the cooling water M from the air-cooling heat exchange unit 6 to the cooling water tank 4.

冷凍機付水冷却機７は、上述の冷媒・水熱交換器11と、アキュムレータ23と、冷媒・空気熱交換器24と、圧縮機25と、送風機26と、を有している。冷媒・水熱交換器11は、冷却水タンク４と配管28, 29にて接続されている。そして、第２通常循環ポンプ30にて、冷媒・水熱交換器11と冷却水タンク４との間で冷却水Ｍの循環が行なわれる。冷媒・水熱交換器11で冷却水Ｍとの熱交換により蒸発した冷媒は、圧縮機25にて吸引，昇圧され、送風機26にて冷却される冷媒・空気熱交換器24で液化して、アキュムレータ23を通り、再び冷媒・水熱交換器11に入るようになっている。なお、冷凍機付水冷却機７は、送風機26を駆動させるファンモータ27，圧縮機25等により、空冷式熱交換ユニット６よりも電力消費量が大きなものとなっている。   The water cooler with a refrigerator 7 includes the refrigerant / water heat exchanger 11, the accumulator 23, the refrigerant / air heat exchanger 24, the compressor 25, and the blower 26. The refrigerant / water heat exchanger 11 is connected to the cooling water tank 4 through pipes 28 and 29. The second normal circulation pump 30 circulates the cooling water M between the refrigerant / water heat exchanger 11 and the cooling water tank 4. The refrigerant evaporated by heat exchange with the cooling water M in the refrigerant / water heat exchanger 11 is sucked and boosted by the compressor 25, and liquefied by the refrigerant / air heat exchanger 24 cooled by the blower 26. It passes through the accumulator 23 and enters the refrigerant / water heat exchanger 11 again. The water cooler with a refrigerator 7 has a larger power consumption than the air-cooled heat exchange unit 6 due to the fan motor 27, the compressor 25, and the like that drive the blower 26.

ここで、本実施形態の冷却調整手段３は、図１及び図２（Ａ) ,(Ｂ）に示すように、冷却水Ｍの冷却設定温度Ｔ0 近傍の第１切換え温度Ｔ1 よりも外気温度が低い場合に熱交換ユニット６を使用し、かつ、冷却設定温度Ｔ0 近傍の第２切換え温度Ｔ2 よりも外気温度が高い場合に冷凍機付水冷却機７を使用するように制御する制御手段８を、有している。 より詳しく説明すると、この制御手段８は、『冷却水Ｍの冷却設定温度Ｔ0 よりも外気温度が高くなって熱交換ユニット６が無力化する温度範囲において、冷凍機付水冷却機７を使用する』という趣旨に基づき制御を行うものである。つまり、図２（Ａ）に示すように、理想的には、外気温度が冷却設定温度Ｔ0 に等しいときを境に熱交換ユニット６と冷凍機付水冷却機７との切換えが行われるのが好ましく、その場合、冷却設定温度Ｔ0 ，第１切換え温度Ｔ1 ，第２切換え温度Ｔ2 は一致する。しかしながら、実際には、配管内の冷却水Ｍの移動や外気温度の変動を考えると、冷却設定温度Ｔ0 の前後でわずかながら熱交換ユニット６と冷凍機付水冷却機７とを同時運転した方がよい場合もある。その場合は、第１切換え温度Ｔ1 は冷却設定温度Ｔ0 よりもわずかに高く設定され、第２切換え温度Ｔ2 は冷却設定温度Ｔ0 よりもわずかに低く設定される。なお、冷却水Ｍが冷却設定温度Ｔ0 よりも低くなった場合にファンモータ22を停止し、温度制御を行うようにすれば、さらに電力消費量を削減させることができる。 Here, as shown in FIGS. 1 and 2A and 2B, the cooling adjustment means 3 of the present embodiment is outside the first switching temperature T 1 in the vicinity of the cooling set temperature T 0 of the cooling water M. Control is performed so that the heat exchanger unit 6 is used when the temperature is low, and the water cooler with refrigerator 7 is used when the outside air temperature is higher than the second switching temperature T 2 near the cooling set temperature T 0. Control means 8 is provided. More specifically, this control means 8 uses “the water cooler with a refrigerator 7 in a temperature range in which the outside air temperature becomes higher than the cooling set temperature T 0 of the cooling water M and the heat exchange unit 6 is disabled. Control is performed based on the meaning of “Yes”. That is, as shown in FIG. 2 (A), ideally, switching between the heat exchange unit 6 and the water cooler 7 with the refrigerator is performed when the outside air temperature is equal to the cooling set temperature T 0 . In this case, the cooling set temperature T 0 , the first switching temperature T 1 , and the second switching temperature T 2 are the same. However, actually, considering the movement of the cooling water M in the piping and the fluctuation of the outside air temperature, the heat exchanging unit 6 and the water cooler 7 with the refrigerator are operated simultaneously slightly before and after the cooling set temperature T 0 . Sometimes it is better. In this case, the first switching temperature T 1 is set slightly higher than the cooling set temperature T 0 , and the second switching temperature T 2 is set slightly lower than the cooling set temperature T 0 . If the fan motor 22 is stopped and the temperature control is performed when the cooling water M becomes lower than the cooling set temperature T 0 , the power consumption can be further reduced.

このような制御手段８は、図１及び図３に示すように、タンク内水温センサ35，外気温度センサ32，凍結防止温度センサ33，冷却水温度センサ34等の温度センサと電気的に接続され、また、制御手段８は、空冷式熱交換ユニット６のファンモータ22，冷凍機付水冷却機７の圧縮機25，冷凍機付水冷却機７のファンモータ27，送水ポンプ17，第１通常循環ポンプ21，第２通常循環ポンプ30等と電気的に接続されている。 制御手段８は、タンク内水温センサ35や冷却水温度センサ34からの情報にて冷却水Ｍの温度を監視し、外気温度センサ32からの情報にて外気温度を監視するようになっている。そして、冷却水Ｍと外気温度との温度比較を行い、かつ、冷却水Ｍを冷却設定温度Ｔ0 に維持できるように、空冷式熱交換ユニット６や冷凍機付水冷却機７を制御する。具体的には、空冷式熱交換ユニット６を動かす場合、タンク内水温センサ35, 冷却水温度センサ34, 外気温度センサ32の情報に基いて、ファンモータ22，第１通常循環ポンプ21等を制御する。また、冷凍機付水冷却機７を動かす場合、タンク内水温センサ35, 冷却水温度センサ34の情報に基いて、圧縮機25, ファンモータ27，第２通常循環ポンプ30等を制御する。
また、制御手段８は、タンク内水温センサ35，冷却水温度センサ34，外気温度センサ32の情報に基いて、（第１切換え温度Ｔ1 ，第２切換え温度Ｔ2 を境として）空冷式熱交換ユニット６を動かすか、冷凍機付水冷却機７を動かすかを判断する。 As shown in FIGS. 1 and 3, the control means 8 is electrically connected to temperature sensors such as a tank water temperature sensor 35, an outside air temperature sensor 32, a freeze prevention temperature sensor 33, and a cooling water temperature sensor 34. The control means 8 includes a fan motor 22 of the air-cooling heat exchange unit 6, a compressor 25 of the water cooler 7 with a refrigerator, a fan motor 27 of the water cooler 7 with a refrigerator, a water supply pump 17, and a first normal It is electrically connected to the circulation pump 21, the second normal circulation pump 30, and the like. The control means 8 monitors the temperature of the cooling water M based on information from the tank water temperature sensor 35 and the cooling water temperature sensor 34, and monitors the outside air temperature based on information from the outside air temperature sensor 32. Then, the temperature of the cooling water M is compared with the outside air temperature, and the air cooling type heat exchange unit 6 and the water cooler 7 with a refrigerator are controlled so that the cooling water M can be maintained at the cooling set temperature T 0 . Specifically, when the air-cooled heat exchange unit 6 is moved, the fan motor 22, the first normal circulation pump 21 and the like are controlled based on information from the tank water temperature sensor 35, the cooling water temperature sensor 34, and the outside air temperature sensor 32. To do. Further, when the water cooler 7 with the refrigerator is moved, the compressor 25, the fan motor 27, the second normal circulation pump 30 and the like are controlled based on the information of the tank water temperature sensor 35 and the cooling water temperature sensor 34.
Further, the control means 8 is based on the information in the tank water temperature sensor 35, the cooling water temperature sensor 34, and the outside air temperature sensor 32 (based on the first switching temperature T 1 and the second switching temperature T 2 ). It is determined whether to move the exchange unit 6 or the water cooler 7 with a refrigerator.

また、第１実施形態の冷却調整手段３は、システム全体休止状態下で、冷却水Ｍを冷却水タンク４と熱交換ユニット６と冷凍機付水冷却機７に循環させる駆動エンジン10付の臨時循環ポンプ９と、駆動エンジン10の排熱を凍結防止用熱量とするために冷却水Ｍを冷却水タンク４と駆動エンジン10のラジエータ13との間で循環させる排熱活用補助ポンプ12と、電動式の臨時循環ポンプ31と、を有する凍結防止手段14を備えている。凍結防止手段14は、システム全体休止状態下で第１通常循環ポンプ21及び第２通常循環ポンプ30が停止し、かつ、配管内を通る冷却水Ｍの温度が０℃近傍の所定の温度になった場合に、使用されるように設定されている。
臨時循環ポンプ９，排熱活用補助ポンプ12，臨時循環ポンプ31は、図３に示すように、制御手段８と電気的に接続されている。また、臨時循環ポンプ９，排熱活用補助ポンプ12，臨時循環ポンプ31は、制御手段８と電気的に接続される凍結防止温度センサ33の情報に基いて、制御されるようになっている。 Further, the cooling adjustment means 3 of the first embodiment is a temporary one with a drive engine 10 that circulates the cooling water M to the cooling water tank 4, the heat exchange unit 6, and the water cooler 7 with a refrigerator in the whole system rest state. A circulation pump 9, an exhaust heat utilization auxiliary pump 12 that circulates the cooling water M between the cooling water tank 4 and the radiator 13 of the drive engine 10 in order to make the exhaust heat of the drive engine 10 an amount of heat for freezing, And an anti-freezing means 14 having a temporary circulation pump 31 of the type. The antifreezing means 14 is such that the first normal circulation pump 21 and the second normal circulation pump 30 are stopped in the whole system rest state, and the temperature of the cooling water M passing through the pipe reaches a predetermined temperature near 0 ° C. Is set to be used.
The temporary circulation pump 9, the exhaust heat utilization auxiliary pump 12, and the temporary circulation pump 31 are electrically connected to the control means 8, as shown in FIG. Further, the temporary circulation pump 9, the exhaust heat utilization auxiliary pump 12, and the temporary circulation pump 31 are controlled based on information from a freeze prevention temperature sensor 33 that is electrically connected to the control means 8.

次に、図４に於て、本発明の第２の実施の形態に係る冷却システムを示す。上述の第１実施形態では、冷却システムの構築時に、熱交換ユニット６と冷凍機付水冷却機７との両方を設置する場合を例示していた。しかしながら、第２実施形態では、冷媒・水熱交換器11にて冷却水Ｍを冷却する空冷式冷凍機付水冷却機７を有し、かつ、冷却水Ｍを所定の温度に調整してプラスチック成形機２に供給する既設の冷却調整手段３Ａに、冷却水Ｍが通る熱交換器５に室外空気を直接的に当てて該冷却水Ｍを冷却する空冷式熱交換ユニット６を、増設した場合を例示している。   Next, FIG. 4 shows a cooling system according to a second embodiment of the present invention. In the first embodiment described above, the case where both the heat exchange unit 6 and the water cooler 7 with a refrigerator are installed when the cooling system is constructed is illustrated. However, in 2nd Embodiment, it has the water cooler 7 with an air cooling type refrigerator which cools the cooling water M with the refrigerant | coolant and the water heat exchanger 11, and adjusts the cooling water M to predetermined temperature, and is plastic In the case where the existing cooling adjustment means 3A supplied to the molding machine 2 is additionally provided with an air-cooling heat exchange unit 6 that directly cools the cooling water M by directly applying outdoor air to the heat exchanger 5 through which the cooling water M passes. Is illustrated.

より具体的に説明すると、既設の冷却調整手段３Ａは、本発明の空冷式熱交換ユニット６を増設する以前から、プラスチック成形工場の冷却システムを構築していたものであり、上記冷凍機付水冷却機７の他、送水ポンプ17，冷却水タンク４，第２通常循環ポンプ30等を備えていた。
第２実施形態では、このような既設の冷却調整手段３Ａに、第１実施形態と同様の空冷式熱交換ユニット６が増設されている。そして、冷却水Ｍを冷却水タンク４と水・空気熱交換器５に循環させる第１通常循環ポンプ21と、冷却水Ｍの冷却設定温度Ｔ0 近傍の第１切換え温度Ｔ1 よりも外気温度が低い場合に熱交換ユニット６を使用し、かつ、冷却設定温度Ｔ0 近傍の第２切換え温度Ｔ2 よりも外気温度が高い場合に冷凍機付水冷却機７を使用するように制御する制御手段８も、増設されている。
さらに、システム全体休止状態下で、冷却水Ｍを冷却水タンク４と熱交換ユニット６と冷凍機付水冷却機７に循環させる駆動エンジン10付の臨時循環ポンプ９と、駆動エンジン10の排熱を凍結防止用熱量とするために冷却水Ｍを冷却水タンク４と駆動エンジン10のラジエータ13との間で循環させる排熱活用補助ポンプ12と、電動式の臨時循環ポンプ31と、を有する第１実施形態と同様の凍結防止手段も増設されている。
つまり、第２実施形態では、既設の冷却調整手段３Ａを使用して、第１実施形態と同様の構成の冷却システムが構築されている。 More specifically, the existing cooling adjustment means 3A is a cooling system for a plastic molding factory that has been built before the addition of the air-cooling heat exchange unit 6 of the present invention. In addition to the cooler 7, a water pump 17, a cooling water tank 4, a second normal circulation pump 30 and the like were provided.
In the second embodiment, an air-cooling heat exchange unit 6 similar to that in the first embodiment is added to the existing cooling adjustment means 3A. Then, the first normal circulation pump 21 that circulates the cooling water M to the cooling water tank 4 and the water / air heat exchanger 5, and the outside air temperature than the first switching temperature T 1 near the cooling set temperature T 0 of the cooling water M. Control to use the heat exchanger unit 6 when the temperature is low and to use the water cooler 7 with the refrigerator when the outside air temperature is higher than the second switching temperature T 2 near the cooling set temperature T 0. The means 8 is also expanded.
Furthermore, the temporary circulation pump 9 with the drive engine 10 that circulates the cooling water M to the cooling water tank 4, the heat exchange unit 6, and the water cooler 7 with the refrigerator, and the exhaust heat of the drive engine 10, while the entire system is in a rest state. In order to make the amount of heat for freezing prevention, a heat pump auxiliary pump 12 for circulating the cooling water M between the cooling water tank 4 and the radiator 13 of the drive engine 10 and an electric temporary circulation pump 31 are provided. Freezing prevention means similar to that of the first embodiment are also added.
That is, in the second embodiment, a cooling system having the same configuration as that of the first embodiment is constructed using the existing cooling adjustment means 3A.

なお、本発明は上述の実施の形態に限定されない。例えば、電動モータ駆動式のプラスチック成形機に適用するのに限るのではなく、油圧駆動式のプラスチック成形機に適用してもよい。
また、第１，第２実施形態では、空冷式熱交換ユニット６を動かすときは第１通常循環ポンプ21を駆動させ、冷凍機付水冷却機７を動かす場合には第２通常循環ポンプ30を駆動させるように構成したが、本発明はこれに限らず、配管の途中に３方バルブを設ける等して、通常循環ポンプを１台としてもよい。
また、冷凍機付水冷却機７は、屋内・屋外のどちらに設置してもよい。
また、凍結防止手段14は冷却水Ｍを冷却水タンク４と熱交換ユニット６と冷凍機付水冷却機７に循環させる（あるいは、冷却水タンク４と熱交換ユニット６との間で循環させる）臨時循環ポンプ９と、駆動エンジン10のラジエータ13の排熱活用補助ポンプ12と、電動式の臨時循環ポンプ31と、）で構成したが、本発明はこれに限らず、容量を増加した１台のポンプ（及び分岐配管）によって構成してもよい。 The present invention is not limited to the above-described embodiment. For example, the present invention is not limited to application to an electric motor driven plastic molding machine, and may be applied to a hydraulic drive plastic molding machine.
In the first and second embodiments, the first normal circulation pump 21 is driven when the air-cooled heat exchange unit 6 is moved, and the second normal circulation pump 30 is operated when the water cooler 7 with a refrigerator is moved. However, the present invention is not limited to this, and a normal circulation pump may be provided by providing a three-way valve in the middle of the pipe.
Moreover, the water cooler 7 with a refrigerator may be installed either indoors or outdoors.
Further, the freeze prevention means 14 circulates the cooling water M through the cooling water tank 4, the heat exchange unit 6, and the water cooler 7 with the refrigerator (or circulates between the cooling water tank 4 and the heat exchange unit 6). The temporary circulation pump 9, the exhaust heat utilization auxiliary pump 12 of the radiator 13 of the drive engine 10, and the electric temporary circulation pump 31), but the present invention is not limited to this, and one unit with increased capacity You may comprise by this pump (and branch piping).

以上のように、本発明に係る冷却システムは、冷却水Ｍを所定の温度に調整してプラスチック成形機２に供給する冷却調整手段３を備え、冷却調整手段３は、冷却水Ｍを貯留する冷却水タンク４と、冷却水Ｍが通る水・空気熱交換器５に室外空気を直接的に当てて冷却水Ｍを冷却する空冷式熱交換ユニット６と、冷媒・水熱交換器11にて冷却水Ｍを冷却する空冷式冷凍機付水冷却機７と、を有し、さらに、冷却水Ｍと外気温度を監視・比較し、冷却水Ｍを所定の冷却設定温度Ｔ0 に維持するように制御すると共に、冷却設定温度Ｔ0 よりも高く設定した第１切換温度Ｔ 1 よりも外気温度が低い場合に熱交換ユニット６を使用し、かつ、冷却設定温度Ｔ0 よりも低く設定した第２切換温度Ｔ 2 よりも外気温度が高い場合に冷凍機付水冷却機７を使用し、そして、第１切換温度Ｔ 1 と第２切換温度Ｔ 2 の温度範囲で、熱交換ユニット６と冷凍機付水冷却機７とを同時運転するように、制御する、制御手段８を、冷却手段３が具備しているので、従来の冷却塔の代わりに熱交換ユニット６を使用し、従来の冷却塔に備わっていた散水ポンプ，散布水を循環させる配管等を省略することができる。これにより、冷却システムの簡素化を図り得る。また、散水ポンプ等を駆動させるエネルギー（燃料，電力）が必要なくなるので、省エネルギー化を図り得る。また、冷却設備を簡素化できる分、冷却システム全体としてのＣＯ2 排出量を抑制できる。即ち、従来の冷却塔と比較すれば、補給水が不要となってＣＯ2 の排出量が削減される。また、冷凍機を使用する場合と比較すれば、電力量削減によってＣＯ2 の排出量が削減される。 As described above, the cooling system according to the present invention includes the cooling adjustment unit 3 that adjusts the cooling water M to a predetermined temperature and supplies the cooling water M to the plastic molding machine 2, and the cooling adjustment unit 3 stores the cooling water M. A cooling water tank 4, an air cooling heat exchange unit 6 that cools the cooling water M by directly applying outdoor air to the water / air heat exchanger 5 through which the cooling water M passes, and a refrigerant / water heat exchanger 11. has air-cooled chiller with water cooler 7 for cooling the cooling water M, and further, the cooling water M and the outside air temperature monitor and compare, maintaining the cooling water M to a predetermined cooling set temperature T 0 controls to, using the heat exchange unit 6 when the outside air temperature is lower than the first switching temperature T 1 of which is set higher than cooling set temperature T 0, and than cooling set temperature T 0 using the cryocooler with water cooler 7 when the outside air temperature is higher than the second switching temperature T 2 that is set lower And, at a first temperature range of the switching temperature T 1 of the second switching temperature T 2, so as to simultaneously drive the heat exchange unit 6 and the refrigerator with water cooler 7, and controls, the control unit 8, the cold Since the rejection means 3 is provided, the heat exchange unit 6 can be used instead of the conventional cooling tower, and the water pump, the piping for circulating the sprayed water, etc., provided in the conventional cooling tower can be omitted. Thereby, the cooling system can be simplified. In addition, energy (fuel, electric power) for driving the watering pump or the like is not necessary, so that energy saving can be achieved. Moreover, since the cooling equipment can be simplified, the CO 2 emission amount as the whole cooling system can be suppressed. That is, compared with the conventional cooling tower, makeup water is not required, and CO 2 emission is reduced. Moreover, compared with the case where a refrigerator is used, the amount of CO 2 emission is reduced by reducing the amount of electric power.

また、冷凍機付水冷却機７を熱交換ユニット６と併用して使用することによって、外気温度が冷却設定温度Ｔ0 より高くなる場合にも、対応することができる。
また、制御手段８にて、熱交換ユニット６単独で冷却可能な温度範囲では熱交換ユニット６のみを使用することによって、多くの電力を消費する冷凍機付水冷却機７をなるべく使用しないようにでき、より省エネルギー化を図り得る。 Further, by using the water cooler with a refrigerator 7 in combination with the heat exchange unit 6, it is possible to cope with the case where the outside air temperature becomes higher than the cooling set temperature T 0 .
Further, by using only the heat exchange unit 6 in the temperature range in which the heat can be cooled by the heat exchange unit 6 alone in the control means 8, the refrigerator-equipped water cooler 7 that consumes a lot of electric power is used as little as possible. This can save energy.

また、冷却調整手段３は、システム全体休止状態下で、冷却水Ｍを冷却水タンク４と熱交換ユニット６と冷凍機付水冷却機７に循環させる（あるいは、冷却水タンク４と熱交換ユニット６との間で循環させる）駆動エンジン10付の臨時循環ポンプ９と、駆動エンジン10の排熱を凍結防止用熱量とするために冷却水Ｍを冷却水タンク４と駆動エンジン10のラジエータ13との間で循環させる排熱活用補助ポンプ12と、を有する凍結防止手段14を備えたものであるので、システム全体休止状態において、季節，時間帯による温度変化や寒冷地における使用等で外気温度が０℃以下になった場合、熱交換ユニット６，冷凍機付水冷却機７，配管等の破損を防ぐことができる。また、凍結防止手段14を使用する際、駆動エンジン10の排熱を利用して冷却水Ｍを温めるので、別途ヒータを使用して冷却水Ｍを温めていた従来と比較して、省エネルギー化を図ることができる。   In addition, the cooling adjustment means 3 circulates the cooling water M to the cooling water tank 4, the heat exchange unit 6, and the water cooler 7 with a refrigerator (or the cooling water tank 4 and the heat exchange unit under the entire system rest state). A temporary circulation pump 9 with a driving engine 10 (circulated between the cooling water tank 6) and a cooling water tank 4 and a radiator 13 of the driving engine 10 for making the exhaust heat of the driving engine 10 an amount of heat for freezing prevention. Since the freezing prevention means 14 having the exhaust heat utilization auxiliary pump 12 that circulates between the two systems, the outside air temperature may change due to a change in temperature depending on the season and time zone or use in a cold region during the rest of the system. When it becomes 0 degrees C or less, damage to the heat exchange unit 6, the water cooler 7 with a refrigerator, piping, etc. can be prevented. In addition, when the freeze prevention means 14 is used, the cooling water M is warmed using the exhaust heat of the drive engine 10, so that energy saving can be achieved compared to the conventional case where the cooling water M is warmed using a separate heater. Can be planned.

本発明の第１実施形態に係る冷却システムを示す概略図である。It is the schematic which shows the cooling system which concerns on 1st Embodiment of this invention. 冷却設定温度と熱交換ユニットの第１切換え温度と冷凍機付水冷却機の第２切換え温度との関係を示す説明図であって、（Ａ）は理想的な切換えを示した説明図、（Ｂ）は現実的に起こりえる切換えを示した説明図である。It is explanatory drawing which shows the relationship between cooling preset temperature, the 1st switching temperature of a heat exchange unit, and the 2nd switching temperature of a water cooler with a refrigerator, (A) is explanatory drawing which showed ideal switching, B) is an explanatory diagram showing switching that can actually occur. 制御手段と、制御手段と電気的に接続される機器と、の関係を示した概略図である。It is the schematic which showed the relationship between a control means and the apparatus electrically connected with a control means. 本発明の第２実施形態に係る冷却システムを示す概略図である。It is the schematic which shows the cooling system which concerns on 2nd Embodiment of this invention.

符号の説明Explanation of symbols

２ プラスチック成形機
３ 冷却調整手段
４ 冷却水タンク
５ 水・空気熱交換器
６ 熱交換ユニット
７ 冷凍機付水冷却機
８ 制御手段
９ 臨時循環ポンプ
10 駆動エンジン
11 冷媒・水熱交換器
12 補助ポンプ
14, 38 凍結防止手段
Ｍ 冷却水
Ｔ0 冷却設定温度 2 Plastic molding machine 3 Cooling adjustment means 4 Cooling water tank 5 Water / air heat exchanger 6 Heat exchange unit 7 Water cooler with refrigerator 8 Control means 9 Temporary circulation pump
10 Drive engine
11 Refrigerant / water heat exchanger
12 Auxiliary pump
14, 38 Anti-freezing measures M Cooling water T 0 Cooling set temperature

Claims (2)

冷却水（Ｍ）を所定の温度に調整してプラスチック成形機（２）に供給する冷却調整手段（３）を備え、
上記冷却調整手段（３）は、上記冷却水（Ｍ）を貯留する冷却水タンク（４）と、該冷却水（Ｍ）が通る水・空気熱交換器（５）に室外空気を直接的に当てて該冷却水（Ｍ）を冷却する空冷式熱交換ユニット（６）と、冷媒・水熱交換器（11）にて該冷却水（Ｍ）を冷却する空冷式冷凍機付水冷却機（７）と、を有し、
さらに、上記冷却水（Ｍ）と外気温度を監視・比較し、上記冷却水（Ｍ）を所定の冷却設定温度（Ｔ0 ）に維持するように制御すると共に、該冷却設定温度（Ｔ0 ）よりも高く設定した第１切換温度（Ｔ 1 ）よりも外気温度が低い場合に上記熱交換ユニット（６）を使用し、かつ、上記冷却設定温度（Ｔ0 ）よりも低く設定した第２切換温度（Ｔ 2 ）よりも外気温度が高い場合に上記冷凍機付水冷却機（７）を使用し、そして、上記第１切換温度（Ｔ 1 ）と上記第２切換温度（Ｔ 2 ）の温度範囲で、上記熱交換ユニット（６）と上記冷凍機付水冷却機（７）とを同時運転するように、制御する、制御手段（８）を、上記冷却手段（３）が具備していることを特徴とするプラスチック成形機の冷却システム。 A cooling adjustment means (3) for adjusting the cooling water (M) to a predetermined temperature and supplying it to the plastic molding machine (2);
The cooling adjustment means (3) directly sends outdoor air to a cooling water tank (4) for storing the cooling water (M) and a water / air heat exchanger (5) through which the cooling water (M) passes. An air-cooled heat exchange unit (6) that cools the cooling water (M) by contact, and a water cooler with an air-cooled refrigerator (11) that cools the cooling water (M) with a refrigerant / water heat exchanger (11) 7)
Further, the cooling water (M) and the outside air temperature are monitored and compared, and the cooling water (M) is controlled to be maintained at a predetermined cooling set temperature (T 0 ), and the cooling set temperature (T 0 ). When the outside air temperature is lower than the first switching temperature (T 1 ) set higher than the second switching temperature , the heat exchange unit (6) is used and the second switching set lower than the cooling set temperature (T 0 ). When the outside air temperature is higher than the temperature (T 2 ) , the water cooler with a refrigerator (7) is used , and the temperatures of the first switching temperature (T 1 ) and the second switching temperature (T 2 ) The cooling means (3) includes control means (8) for controlling the heat exchange unit (6) and the water refrigerator with refrigerator (7) to operate simultaneously within a range . A cooling system for a plastic molding machine. 上記冷却調整手段（３）は、システム全体休止状態下で、上記冷却水（Ｍ）を上記冷却水タンク（４）と上記熱交換ユニット（６）と上記冷凍機付水冷却機（７）に循環させる駆動エンジン（10）付の臨時循環ポンプ（９）と、該駆動エンジン（10）の排熱を凍結防止用熱量とするために該冷却水（Ｍ）を上記冷却水タンク（４）と該駆動エンジン（10）のラジエータ（13）との間で循環させる排熱活用補助ポンプ（12）と、を有する凍結防止手段（14）を備えた請求項１記載のプラスチック成形機の冷却システム。 The cooling adjustment means (3) sends the cooling water (M) to the cooling water tank (4), the heat exchange unit (6), and the water cooler with refrigerator (7) under the entire system rest state. A temporary circulation pump (9) with a drive engine (10) to be circulated, and the cooling water (M) with the cooling water tank (4) in order to make the exhaust heat of the drive engine (10) an amount of heat for freezing prevention. cooling system for plastic molding machine according to claim 1, further comprising a freezing preventing means (14) having a waste heat utilization auxiliary pump (12), a circulating between the radiator (13) of the drive engine (10) .
JP2005300775A 2005-10-14 2005-10-14 Plastic molding machine cooling system Active JP3975218B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005300775A JP3975218B2 (en) 2005-10-14 2005-10-14 Plastic molding machine cooling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005300775A JP3975218B2 (en) 2005-10-14 2005-10-14 Plastic molding machine cooling system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2007008383A Division JP4339364B2 (en) 2007-01-17 2007-01-17 Cooling system

Publications (2)

Publication Number Publication Date
JP2007106045A JP2007106045A (en) 2007-04-26
JP3975218B2 true JP3975218B2 (en) 2007-09-12

Family

ID=38032285

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005300775A Active JP3975218B2 (en) 2005-10-14 2005-10-14 Plastic molding machine cooling system

Country Status (1)

Country Link
JP (1) JP3975218B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101239359B1 (en) 2010-11-24 2013-03-05 유도썬스(주) Duble Injection-molding of Cooling System

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101524887B (en) * 2009-03-26 2011-07-20 上海大学 Energy-saving type cooling water circulating system and running mode of injection workshop
KR101269651B1 (en) 2010-11-24 2013-05-30 유도썬스(주) Injection Molding of Heating And Cooling System
JP6145252B2 (en) * 2012-06-21 2017-06-07 株式会社松井製作所 COOLING METHOD, COOLING DEVICE CONTROL DEVICE AND COOLING DEVICE
JP5762493B2 (en) * 2013-09-20 2015-08-12 株式会社ナカヤ Circulating fluid temperature control method using area-specific parameter control hybrid chiller
CN104129015B (en) * 2014-07-17 2017-03-08 信易电热机械有限公司 A kind of cold die heater of self-circulating wind
JP6437843B2 (en) * 2015-02-19 2018-12-12 株式会社ダイヘン Welding system and method for controlling welding system
CN104626490B (en) * 2015-02-27 2017-07-28 宝莲华新能源技术（上海）有限公司 A kind of injection machine cooling system of utilization geothermal heat pump air-conditioner
KR101941494B1 (en) * 2018-10-19 2019-01-24 주식회사 삼정이엔씨 oil cooling system
CN109774085B (en) * 2019-01-31 2020-12-04 贵州省材料产业技术研究院 Pressure and temperature control device for mold cavity

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101239359B1 (en) 2010-11-24 2013-03-05 유도썬스(주) Duble Injection-molding of Cooling System

Also Published As

Publication number Publication date
JP2007106045A (en) 2007-04-26

Similar Documents

Publication Publication Date Title
JP3975218B2 (en) Plastic molding machine cooling system
US10532630B2 (en) HVAC system of vehicle
US9756762B2 (en) Circulative cooling system and method for controlling circulation in the cooling system
EP2212630B1 (en) Heat pump device
CZ20021633A3 (en) Method for decreasing temperature of transformer cooling medium and system for making the same
CN104791925A (en) Energy-saving type open cold supply system for cooling tower
JP2009192088A (en) Cooling system
JP4339364B2 (en) Cooling system
JP5067958B2 (en) Geothermal heat pump system and water heat pump system
KR101592996B1 (en) Waste heat recycling system using a hybrid heat pump
KR101001293B1 (en) Energy-saving ice thermal storage system for separating cold charge and discharge pump
JP5508668B2 (en) Heat medium supply system
KR101430590B1 (en) Cooling system for watertank
JP4464114B2 (en) Thermal storage device and thermal storage control method
JP2008008508A (en) Cold water manufacturing system
KR100868518B1 (en) Geothermal heat pump system and control method thereof
JP2001349655A (en) Cooling device
JP2015010789A (en) Heat source system
KR102199280B1 (en) Water heat storage system switchable between open and closed type and its control method
JP2002137271A (en) Cooling device and cooling method of plastic molding machine
CN220366470U (en) Water circulation system for workshop refrigeration
JP5404945B2 (en) Heat medium supply system renovation method
JPH026424B2 (en)
JP2006162207A (en) Ground heat utilizing water cooled heat pump air conditioning system
KR102352708B1 (en) Integrated thermal management system for railway vehicle

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070320

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20070517

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20070612

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20070618

R150 Certificate of patent or registration of utility model

Ref document number: 3975218

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100622

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100622

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110622

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130622

Year of fee payment: 6

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140622

Year of fee payment: 7

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250