The high and low temperature integrated chiller is a new type of laboratory temperature control equipment, which has the functions of heating and cooling at the same time, and can realize the continuous temperature control of - 80 ℃ ~ 200 ℃ by the same medium, eliminating the tedious steps of changing the medium. The whole circulation system is completely closed, so there will be no oil mist at high temperature, and the water vapor in the air will not be absorbed at low temperature, so the efficiency of refrigeration and heating becomes higher.
Cooling Heating Circulator is the laboratory equipment with heating and refrigeration functions, this instrument uses a number of proprietary technology, high precision of temperature control, mainly used for biological, chemical and other fields (such as rotary evaporator, reactor, fermentation tank, calorimeter and other equipment); this instrument is highly automated and can be set according to the demand automatic heating or cooling apparatus; the accurate temperature control, heating and refrigeration functions in general, can meet the various needs of biochemical experiment.
DOVMXtech Cooling Heating Circulator:
Selling point
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For many years of production technology and experience, The equipment is scientific in design, safe and reliable, stable in operation, simple in operation, high quality and reasonable price;
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Imported brand compressor with guaranteed power used to increase the service life. The service life is up to five years;
- Wide working temperature ranges using one bath fluid: -40℃～200℃;
- Refrigeration system, heating system and pre-cooling system can work independently or work together continuously;
- It is available with air cooling and water cooling;
- Multi safety protections: Over temperature cut-off, electrical leakage prodtection, over-current protection etc.;
- Designed with bath fluid monitoring window, avoid shortage of liquid;
- Rapid heat-up or cool-down;
- Dovmxtech Dynamic Temperature Control System are exported to many countries, such as the United States, Canada, Colombia, Italy, the Netherlands, Poland, Australia and Thailand;
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DOVMXtech brand is well-known worldwide;
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We are a well-known OEM supplier of laboratory equipment in the United States and Canada;
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Equipment can be customized according to customer requirements;
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We can provide door-to-door transportation services, worry-free delivery, including customs clearance;
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Recruit distributor partners globally. We have a very mature pricing system for distributors, fully guaranteeing the interests of distributors.
Application characteristics:
A circulation device capable of providing a heat source or a cold source. It has a wide range of work and can be used in pharmaceutical, chemical, biological and other industries to provide heat and cold sources for reactors and tanks.
● wide temperature control range: -40 ℃ ~ 200 ℃.
● precooling system, refrigeration system and heating system can be used in combination.
● rapid heating or cooling.
● large cooling rate, which can be forced to cool quickly.
● totally closed circulation system, heat conducting fluid is not easy to volatilize and oxidize at high temperature; It is not easy to be affected by environmental conditions at low temperature and can prolong the service life of the heat transfer fluid.
● fully brazed plate heat exchanger is adopted for refrigeration heat exchanger, which occupies small space and has high heat exchange efficiency.
● liquid level display function to monitor liquid level in real time to avoid lack of heat carrying fluid.
● over temperature protection, leakage protection, overcurrent protection and other protection functions to fully ensure the safety of users and equipment.
● according to the user's requirements, air cooling and water cooling can be provided
Application:
● temperature control of double-layer and three-layer reactors in chemical, pharmaceutical and biological fields.
● temperature control in material testing.
● temperature control of distillation system.
● temperature change simulation control during the process.
● thermostatic control system.
● temperature control of semiconductor equipment.
● temperature control of thermal test platform.
advantage:
● high process safety. In the high-temperature area, by virtue of the regulating function of the precooling system and the circulating pump, the safe cooling can be realized and the condition requirements of the process experiment can be met; And the service life of the equipment can be extended
● complete exhaust system. The heat carrier fluid circulation system is equipped with an exhaust port, which can smoothly complete the filling of heat carrier fluid.
● totally enclosed liquid circulation system. Fully closed circulation system, under high temperature conditions, the hot fluid is not easy to volatilize, no oil mist, and not easy to be oxidized; It is not easy to absorb water under low temperature conditions, which extends the service life of the heat carrier fluid.
● color touch screen. The 5.7 inch color touch screen can clearly display relevant information of the working process, and the characteristic curve of the relationship between material temperature and time is clear at a glance.
● high temperature control accuracy. PID control mode is adopted to optimize the temperature control process parameters, and the temperature control accuracy can reach ± 0.5 ℃.
● convenient data communication. RS485 data interface, USB interface and external sensor interface are provided as standard.
● USB function: use the USB interface to directly store data to the U disk, which is fast and convenient.
● RS485 interface: remote control or data transmission.
● PT100 external sensor: real time measurement of material temperature in reaction vessels such as reaction kettle.
● reservation function. Set the equipment startup time and operating conditions to realize automatic startup and safe operation.
● precooling function. Unique pre cooling function, fast cooling and power consumption less than 100W, saving energy.
● safety guarantee. Over temperature protection, leakage protection, overcurrent protection and other protection measures.
● save space. Compact structure and small space.
● fast heat transfer. Large flow circulating pump and large hose section ensure maximum flow rate and optimal heat transfer.
● multiple control modes. It has two control modes of fixed value / segmented program control.
Explosion-proof electrical: additional $350.
110V voltage requires an additional $200.
The whole system consists of refrigeration unit, precooling unit, heating unit, circulation system and control system.
Process flow diagram of the whole machine:
1.1 refrigeration unit
A fully enclosed compressor, air-cooled condenser, plate heat exchanger and expansion valve are used to form a refrigeration unit to meet the cooling requirements.
Compressor: Taikang fully enclosed piston compressor is adopted, which is an original imported type. It has the advantages of high efficiency, reliable operation, low noise and long service life.
Air cooled condenser: the air-cooled fin type condenser is adopted, and the oxygen-free red copper screw tube is used inside, with high efficiency and large heat exchange coefficient; Intermediate expansion proprietary technology, easy maintenance.
Expansion valve: Danfoss detachable thermal expansion valve is adopted, which is composed of power head, valve core and flange. When maintaining or replacing the valve, it is not necessary to cut off the system pipeline; The degree of superheat can be adjusted to ensure the stability and reliability of the product for a long time.
Plate heat exchanger: compact structure, easy installation, less liquid consumption, low dirt coefficient, light weight, only equivalent to 20% ~ 30% of shell and tube heat exchanger, and design temperature - 160 ℃ ~ 200 ℃.
1.2 precooling unit
It is mainly used for indirect excessive cooling from high temperature; The air-cooled fin heat exchanger and high-speed fan are used for forced air cooling and heat dissipation, which can rapidly reduce the temperature from high temperature to room temperature, which can not only save energy, but also avoid high-temperature operation of the compressor and prolong the service life of the compressor.
1.3 heating unit
The special electric heater for flange type heat transfer oil is adopted, which conforms to the technical standard JB / T 2379.
1.4 circulating system
High and low temperature resistant shielded pump is used to transport heat transfer fluid; The circulating pipeline is made of 304 stainless steel to prevent corrosion and low temperature liquid pollution. It has the function of preventing the backflow of heat carrier fluid; The built-in expansion vessel can meet the technical design requirements of thermal expansion and contraction of the heat carrier fluid and ensure the normal operation of the circulation system; The liquid level in the expansion tank can be monitored through the liquid level display; The thermal insulation material of the circulating system is special type.
1.5 control system
5/7 inch TFT true color display screen display, touch operation, with reservation start / stop function; There are two temperature control modes (constant value type / program). When program control is selected, 120 groups of application programs can be programmed, and each group of programs can be divided into 100 sections; It has the function of automatically drawing the temperature characteristic curve of the working process; RS485 interface is adopted for communication and Modbus RTU protocol is followed. (optional)
1.6 protection function
It has the functions of delay start, overtemperature, high and low voltage, overload, overcurrent and undervoltage protection.
| Model | GDX-10/40 | GDX-20/40 | GDX-30/40 | GDX-50/40 | GDX-100/40 | ||
| Technical data | Temperature range | -40～200℃；±1℃ | |||||
| Ambient temperature（℃） | ≤30℃ | ||||||
| Ambient humidity | 60% | ||||||
| Voltage（V） | 220(Optional 1P 220V) | 380（Optional 3P 220V/3P 480V) | |||||
| Phase（P） | 1 | 3 | |||||
| Frequency（Hz） | 50/60 | ||||||
| Power（Kw） | 2.8 | 4.5 | 7.7 | 12 | 15 | ||
| Heating capacity（Kw） | 2 | 3 | 4.5 | 6 | 9 | ||
| Cooling capacity（w） | RT | 1900 | 2800 | 7500 | 12775 | 15750 | |
| 0℃ | 1200 | 1900 | 5500 | 10500 | 11000 | ||
| -40℃ | 250 | 600 | 800 | 850 | 900 | ||
| Temperature sensor | PT100 | ||||||
| Protection | Overvoltage, time delay, overcurrent, overheating, leakage, protector | ||||||
| Compressor | Type | Closed | |||||
| Brand | Tecumseh | ||||||
| Power（Kw） | 0.73 | 1.25 | 3 | 5.25 | 4.5 | ||
| HP | 1 | 1.5 | 4 | 7 | 6 | ||
| Quantity | 1 | ||||||
| Refrigerant | R404A | ||||||
| Condenser | Type | Air cooling/ water cooling | |||||
| Fan type | External rotor axial flow fan | ||||||
| Quantity | 1 | 2 | |||||
| Evaporator | Type | Plate heat exchanger | |||||
| Tank volume（L） | 7 | 10 | 17 | 35 | |||
| External circulation adapter size | G1/2" external interface | G3/4" external interface | |||||
| Circulating pump | Type | Shield pump | Vortex pump | ||||
| Brand | Shanghai Jingyi | Aulank | |||||
| Power（w） | 100 | 250 | 370 | ||||
| Current（A） | 1 | 1 | 2.1 | 3.5 | 3.5 | ||
| Rated head（m） | 6 | 6 | 8 | 12 | 12 | ||
| Rated flow（L/min） | 25 | 25 | 25 | 35 | 35 | ||
| Appearance dimension | Weight（Kg） | 60 | 90 | 130 | 170 | 220 | |
| Packing weight（Kg） | 80 | 115 | 150 | 220 | 290 | ||
| Chiller size | Length（mm） | 540 | 620 | 710 | 770 | 970 | |
| Width（mm） | 420 | 540 | 580 | 670 | 800 | ||
| Height（mm） | 800 | 920 | 1090 | 1180 | 1350 | ||
| Packing size | Length（mm） | 610 | 680 | 770 | 840 | 1040 | |
| Width（mm） | 510 | 620 | 660 | 760 | 890 | ||
| Height（mm） | 870 | 1100 | 1220 | 1340 | 1520 | ||
| *PLC | Control system | Siemens S7-200 smart PLC | |||||
| Programming | 5 programs can be written, each with up to 40 steps | ||||||
| Control model | Material temperature and equipment outlet temperature can be switched automatically | ||||||
| Protocol | Modbus RTU protocol RS485 interface (optional RS232 Ethernet) | ||||||
| Control panel | 7-inch Siemens color touch screen (optional 10 inch) | ||||||
| Data export | Support USB flash disk data export, and export temperature data in TXT format | ||||||
| Packing list | 2 sets of adapter valves, one roll of raw meal | ||||||
| 2 stainless steel insulated hoses | |||||||
| Operation instructions | |||||||
| All data are measured in the factory, and users will have errors in the process of use | |||||||
| *PLC for optional PLC part data, it is not applicable if there is no PLC | |||||||
| 型号 | GDX-10/40 | GDX-20/40 | GDX-30/40 | GDX-50/40 | GDX-100/40 | ||
| 主要技术参数 | 设计温度范（℃） | -40~200℃；±1℃ | |||||
| 环境温度（℃） | ≤30℃ | ||||||
| 最佳环境湿度 | 60% | ||||||
| 电压（V） | 220(可选1P 220V) | 380（可选3P 220V/3P 480V) | |||||
| 相数（P） | 1 | 3 | |||||
| 频率(HZ) | 50/60 | ||||||
| 总功率（Kw） | 2.8 | 4.5 | 7.7 | 12 | 15 | ||
| 加热功率（Kw） | 2 | 3 | 4.5 | 6 | 9 | ||
| 制冷量 | RT | 1900 | 2800 | 7500 | 12775 | 15750 | |
| （w） | 0℃ | 1200 | 1900 | 5500 | 10500 | 11000 | |
| -40℃ | 250 | 600 | 800 | 850 | 900 | ||
| 温度传感器 | PT100 | ||||||
| 安全保护 | 过压、延时、过流、过热、漏电、保护器 | ||||||
| 压缩机 | 类型 | 全封闭 | 全封闭 | 全封闭 | 全封闭 | 全封闭 | |
| 品牌 | 泰康 | ||||||
| 功率（Kw） | 0.73 | 1.25 | 3 | 5.25 | 4.5 | ||
| P数 | 1 | 1.5 | 4 | 7 | 6 | ||
| 数量 | 1 | 1 | 1 | 1 | 1 | ||
| 制冷剂 | R404 | R404A | R404 | R404 | R404A | ||
| 冷凝器 | 类型 | 密闭风冷/可定制水冷散热 | |||||
| 风机类型 | 轴流外转子 | ||||||
| 风机数量 | 1 | 2 | |||||
| 蒸发器 | 类型 | 板式换热 | |||||
| 液槽容积（L） | 7 | 7 | 10 | 17 | 35 | ||
| 外循环接口尺寸 | G1/2"外丝 | G3/4"外丝 | |||||
| 循环泵 | 类型 | 屏蔽泵 | 屏蔽泵 | 旋涡泵 | 旋涡泵 | 旋涡泵 | |
| 品牌 | 上海精益 | 上海精益 | 奥兰克 | 奥兰克 | 奥兰克 | ||
| 功率（w） | 100 | 100 | 250 | 370 | 370 | ||
| 电流（A） | 1 | 1 | 2.1 | 3.5 | 3.5 | ||
| 扬程（m） | 6 | 6 | 8 | 12 | 12 | ||
| 额定流量（L/min） | 25 | 25 | 25 | 35 | 35 | ||
| 外观尺寸 | 重量（Kg） | 60 | 90 | 130 | 170 | 220 | |
| 装箱重量（Kg） | 80 | 115 | 150 | 220 | 290 | ||
| 尺寸 | 长（mm） | 540 | 620 | 710 | 770 | 970 | |
| 宽（mm） | 420 | 540 | 580 | 670 | 800 | ||
| 高（mm） | 800 | 920 | 1090 | 1180 | 1350 | ||
| 装箱尺寸 | 长（mm） | 610 | 680 | 770 | 840 | 1040 | |
| 宽（mm） | 510 | 620 | 660 | 760 | 890 | ||
| 高（mm） | 870 | 1100 | 1220 | 1340 | 1520 | ||
| *PLC | 控制系统 | 西门子S7-200smartPLC | |||||
| 程序编程 | 可编写5条程序每条可最多达40条步骤 | ||||||
| 控制模式 | 物料温度与设备出口温度可自行切换 | ||||||
| 通讯协议 | modbus RTU协议 RS485接口（选配RS232 以太网） | ||||||
| 操作面板 | 7寸西门子彩色触摸屏（可选10寸） | ||||||
| 数据导出 | 支持U盘数据导出，可导出温度数据TXT格式 | ||||||
| 装箱清单 | 适配阀门2组，生料带一卷 | ||||||
| 不锈钢带保温软管2根 | |||||||
| 操作使用说明书一份 | |||||||
| 数据部分为工厂测试数据，实际或许稍微有所偏差 | |||||||
| *PLC为选配PLC部分数据，若无PLC不适用 | |||||||
Precautions for DOVMXtech-GDX series closed refrigeration heating cycle device:
To ensure the cooling efficiency of the system, in addition to ensuring that the ambient air around the instrument is clean, any dust on the condenser surface must be regularly inspected and cleaned. Please follow the following steps:
① Confirm that the power connector of the equipment has been unplugged.
② Remove the two screws on the lower side of the air intake ventilation net cover of the equipment, then pull the net cover down slightly, and then remove it.
③ Use soft brush or other similar tools to check and clean the dust on the surface of the net cover and condenser.
◆ do not touch the condenser fins with your hands to avoid scratching your hands!
④ After cleaning, install the ventilation net cover and tighten the screws.
We're sorry if we didn't respond in time.
Each equipment will undergo many strict inspections before delivery and transportation to ensure that it is intact. All electrical parts are warranted for one year (except for vacuum pumps and glassware). We have provided double copies for easily damaged items. Please rest assured that the whole machine will be maintained for life. if something breaks, replacement parts will be shipped next day by air.
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