Explosion-proof chillers require all component
with electricity to be explosion-proof and will be equipped with an
explosion-proof certificate. Explosion-proof chillers are based on standard
chillers and are specific explosion-proof measures taken to prevent electrical
equipment from igniting the surrounding explosive gas environment. It is an
integral explosion-proof system. In addition to the explosion-proof performance
of all electrical components, it must also consider the overall explosion-proof
performance of the unit to meet the standard requirements. It provides a
comfortable and safe production environment for people in explosion-hazardous
places (in addition to the performance of the product itself, the safety guarantee
also depends on reasonable selection, correct use and maintenance).
Explosion-proof chillers are mainly used in
chemical, ink printing, dusty environments, oil refining, petrochemical and
other flammable and explosive industries that require protection.
The explosion-proof chiller can be an
air-cooled chiller or a water-cooled chiller. Depending on the compressor, it
can be a scroll chiller or a screw chiller. The refrigeration capacity of Oumal's
explosion-proof chiller ranges from 1 RT to 400 RT, which can be customized
according to customer requirements. It can pass water at room temperature
through the chiller refrigeration system to provide a certain temperature to
strengthen the cooling of the mold or machine, and use it as a stand-alone
machine. It mainly has three mutually cooperating systems: refrigerant
circulation system, water circulation system, and electrical automatic control
system. Oumal's explosion-proof chiller uses well-known brand compressors to
ensure the quality of the chiller. To get the price of the explosion-proof
chiller, please contact us. Will provide the high-quality explosion-proof water chiller with best price.
There are many types of industrial
chillers. When purchasing a chiller, different chiller suppliers make different
chiller solutions. Therefore, customers need to face choices in the process of
purchasing chillers. How can they choose a suitable chiller Suppliers? Are there any problems that we need to pay
attention to when purchasing chillers? The following Oumal chiller manufacturer
will take you to analyze together.
First of all, when purchasing a chiller, it
is necessary to know whether it is an air-cooled chiller or a water-cooled
chiller, whether the chiller model recommended by the supplier meets your
requirements, whether the cooling capacity is sufficient, and whether the power
supply voltage matches , If different chiller suppliers have different prices,
we compare air-cooled chillers with water-cooled chillers, it will be difficult
to choose a suitable supplier. Because the price of water-cooled chillers is
cheaper than that of air-cooled chillers. The same water-cooled chiller also
distinguishes the difference between the box-type chiller ( Packaged water
cooled chiller) and the open-type
chiller.
When comparing the price of the chiller of
the same scheme, we can't see the low price and choose the low-priced supplier.
We must compare the configuration of the chiller. First of all, the compressor
is the core component of the chiller, and the brands of compressors are
different. , The price is naturally different. We can’t just look at the
compressor brand as a well-known brand to determine that the quality of this
chiller is high, and other accessories should be balanced, including pump
brand, pump material, pump pressure, evaporator type and evaporator material,
condenser, fan , And the control panel. Take the screw chiller for example, the
control panel has a button type, LCD Touch Screen, PLC Controller, and
different control systems, resulting in different costs for the screw chiller.
Secondly, the after-sales service of the
chiller is also worthy of our attention. Whether the manufacturer of the
chiller is professional, whether there are professional service personnel, and
the time of the after-sales service are all factors that we need to consider
when purchasing the chiller. The production time of the chiller, payment
method, price terms, each difference will lead to the different price of the
chiller. Only by choosing a supplier that suits our positioning can we get
quality service at a preferential price.
Oumal chiller has favorable price, high-end
configuration and professional technical team. It is a trusted chiller supplier
in China. If you want to purchase a chiller, please contact us, Oumal will make
the best chiller solution for you with best price .
As we all know, the application of industrial chillers is very wide, of which chillers are the most widely used in
the plastics industry. So, why does the plastics industry need to use water
chillers, and where do they need to use water chillers in the plastics
industry?
We know that a chiller is a kind of
refrigeration equipment that cools water and recycles it. In plastic
production, the high temperature easily affects the molding of plastic
products. The chiller can be used to cool down injection molds and improve the
quality of plastic products. So which plastic machinery needs to use a chiller?
Below, Omar Refrigeration will take you to understand the application of
chillers in the plastics industry.
Injection molding machine: In the injection
molding process of plastic products (televisions, computers, washing machines,
mobile phones, refrigerators, air conditioners, plastic toys, automotive
plastic parts, etc.), whether the product can be cooled (cooling down) in a
timely and effective manner will directly affect the appearance of the product
And shape qualification rate, which affects production efficiency, production
costs and corporate profits.
Air cooled chiller is easy to install, and
widely used in the injection molding machines. If you want to use one chiller
to provide chilled water for several injection molding machines, the water-cooled screw chiller for central water chiller is a good choice.
Plastic Extruder machine (Sheet Extruder Machine
): Extruder extrudes pipes, trunking, cables and various plastic profiles. The
heated and melted raw materials are cooled by a freezing water bath after being
molded by the mold, and the water temperature in the freezing water bath must
be kept constant. Due to the high production speed, large cooling capacity
units are required for the surface. If the existing frozen pool is large
enough, the unit may not be equipped with a water tank.
Bottle blowing machine: mainly produces all
kinds of mineral water bottles and soda bottles. Compressed air drying-clean,
dry compressed air is required for blowing, and the water in the compressed air
can be removed by using the frozen water provided by the industrial chiller as a
cold source. Also chiller used in other machines like Compression molding
machine, stretch film machines, cast film machine, cup making machine, plastic forming
machine, cup making machines, cup lid machines, cup forming machines, sheet
machine and so on.
Oumal Chiller specializes in the production
of chillers for the plastics industry, including air-cooled chillers,
water-cooled chillers, screw chillers, etc. The appropriate chiller model is
selected according to the size of the customer's machine.
Ultrasonic cleaners also called Ultrasonic
cleaning machines, are widely used in surface spray treatment industry,
machinery industry, electronics industry, medical industry, semiconductor
industry, watch jewelry industry, optical industry, textile printing and dyeing
industry. Other industries, etc. Compared with other cleaning, ultrasonic
cleaning machine has the advantages of high cleaning rate, less residue, short
cleaning time, and good cleaning effect. Ultrasound has a cleaning effect on
all parts to be cleaned that can be immersed in liquid. It is not limited by
the surface shape of the cleaning parts, such as deep holes, slits, and
grooves. Can be cleaned.
In our country, the military electronics
complete machine factory has begun to promote, and has received the double
benefits of not only improving product reliability, but also reducing the cost
of after-sales service. In the production of connectors, connectors, adapters
and other devices, they must also be cleaned before electroplating and
assembly, otherwise the dust and oil adsorbed on these assembled parts will
inevitably affect their conductivity and insulation performance, especially
some complex multi-core This is especially true for connectors.
Why do ultrasonic cleaning machine need to
be equipped with industrial chillers?
The ultrasonic cleaning machine is equipped
with a chiller mainly to reduce the temperature of the tank body when the
ultrasonic cleaning machine is working, and effectively prevent the cleaning
agent from volatilizing.
As long as it is a gas-phase ultrasonic
cleaner or an ultrasonic cleaner that uses a solvent-based cleaning medium, it
must be equipped with a chiller.
Solvent-based cleaning media are relatively
volatile, and the cleaning fluid is easy to volatilize at high temperatures. If
a chiller or cooling device is not equipped, the solvent volatilizes faster.
The special smell of solvents will also be
emitted. Many solvent-based cleaning media are toxins, which is not conducive
to the health of equipment operators.
How to choose a chiller for an ultrasonic
cleaning machine?
The following factors need to be considered
when the ultrasonic cleaning machine is equipped with a chiller:
1. The power of the heating tube
2. The power of the ultrasonic
3. The organic matter, toxic, needs to be
used for volatilization
4. The cleaning fluid is more expensive and
needs to be used for volatilization.
Such as: enclosed optical ultrasonic
cleaning machine, 17-slot automatic resin optical lens cleaning machine,
optical glass ultrasonic cleaning machine, these three kinds of ultrasonic
cleaning machines need to use chillers.
Selection formula: (heating tube power +
ultrasonic power) x safety factor, the safety factor is generally 1.2.
Ultrasonic cleaners special chillers
generally require clean water quality. Therefore, when we are equipped with
chillers, we need to use 304 stainless steel or 316 stainless steel for the
water pump, water tank, pipes and pipe fittings of the chiller. If you are looking
for water chiller for you ultrasonic cleaning machine, please call at +86
15112554736 to get the best price.
During the use of the chiller, sometimes
freezing occurs, and the chilled water malfunctions and alarms. The evaporator
is one of the four core components of the chiller, and its importance is
self-evident. Once it fails, the chiller will also go on strike. Today we will
talk about the more common evaporator failures, namely Icing, to analyze the
cause and find a solution. Why does the chiller freeze? How to eliminate the
icing failure of the evaporator?
For low-temperature chillers, use
antifreeze instead of water. Such as Glycol.
A normal temperature chiller uses water for
circulation. The temperature of this chiller is generally set at 5 degrees. The
factory has set it before leaving the factory. Of course, you can set it
yourself. If the temperature is too low, it will freeze. If the temperature of
the medium and high temperature chiller is lower than 5 degrees without adding
antifreeze, it is easy to cause the evaporator to freeze and cause the chilled
water failure alarm.
2. See if the chiller is installed with a
temperature sensor
The temperature probe will work in
coordination with the control board. When the temperature is too low, the
temperature probe will tell the main board that the main board will sound an
alarm and stop automatically, so there will be no icing.
3. Insufficient refrigerant
During the use of the chiller, refrigerant
leakage or blockage will occur. After the refrigerant is reduced, the
evaporation pressure will be too low, causing the evaporator to freeze. The
location of the icing is sometimes in the evaporator. If the refrigerant leaks,
The method of elimination is to deal with the leaking part first, add enough
refrigerant, and the fault will be eliminated. If the expansion valve is
blocked, replace the expansion valve with a new one.
OUMAL CHILLER Supply all kinds of chillers,
such as low temperature chiller, industrial chiller, Brine chiller, screw
chiller, glycol chiller……If you are looking for a cooling water system, contact
us. Will provide you the best chiller solution with good price.
In industrial production, stable process cooling isn’t just a support function — it’s often the difference between smooth operation and costly downtime. At OUMAL Refrigeration Machinery Co., Ltd, we’ve worked with customers across injection molding, extrusion, thermoforming, and more. Over time, one thing has become clear: choosing the right chiller matters.
Not All Cooling Needs Are Created Equal Different industries — even different machines — have very different cooling requirements. For example, a customer running a small injection molding line may only need a compact 8 ton chiller to maintain mold temperatures within a tight range. These chillers are space-efficient and offer precise control, making them a practical choice for localized cooling tasks.
On the other hand, when the scale increases or when multiple machines share a cooling circuit, something like a 15 TR chiller tends to be a better fit. We’ve seen these used successfully in mid-sized production lines where reliability and steady performance are non-negotiable.
For large plants, especially those operating around the clock, a 100 ton water cooled chiller can provide both capacity and energy efficiency. Water-cooled systems require more infrastructure — including cooling towers and proper piping — but in return, they offer stable performance in high ambient environments and over long production runs.
Built for Industry, Backed by Experience What sets OUMAL apart is not just the equipment itself, but the way we build around customer needs. Our manufacturing team can handle a wide range of options and customizations, which means the chiller you receive isn’t off-the-shelf — it’s made to work the way you do.
We’ve served customers in over 20 countries, including the US, Australia, Saudi Arabia, Vietnam, and Brazil. The variety of applications we’ve supported — from blown film to compound mixing — gives us the insight to ask the right questions before making a recommendation. Our goal is always to match cooling performance with process demand, rather than over- or under-sizing.
Long-Term Value Comes from the Right Start One thing we often remind our partners: a properly selected chiller does more than control temperature. It protects your equipment, shortens your cycle times, and helps maintain product consistency. That’s especially important in processes where a few degrees can mean the difference between a good batch and scrap.
Whether you’re starting with a single machine or upgrading an entire line, OUMAL is ready to help you choose wisely — whether that’s an 8 ton, 15 TR, or 100 ton water cooled chiller.
When someone new joins our engineering team, one of the first questions they usually ask is: “So what’s the difference between air cooled and water cooled chillers—and which one’s better?”
It’s a good question. And after installing, maintaining, and even troubleshooting both systems in dozens of customer factories, here’s how we usually explain it.
Let’s Start with the Basics
An air cooled chiller is essentially a cooling unit that uses ambient air to remove heat from a circulating liquid—usually water or a water-glycol mix. It's often used to keep production equipment or buildings at a stable temperature.
There’s no need for a cooling tower or a complex water pipeline. It uses built-in fans to get the job done.
This setup is widely chosen in:
Injection molding plants
Food packaging lines
Laser processing workshops
HVAC systems for commercial buildings
If you’ve got space outside and want to avoid dealing with water quality issues, air cooled is probably the better call.
What’s Inside the Unit?
Rather than listing textbook components, here’s what we see under the cover of atypical air cooled water chiller we ship:
A compressor that acts like the system’s engine
An evaporator that draws heat out of your process water
A condenser with aluminum fins, cooled by strong fans
An expansion valve to adjust refrigerant pressure
A control panel—the brain of the system
Some models include water pumps and tanks. Others are modular—you can connect them to existing infrastructure.
Here’s How It Works (Simplified)
Let’s say you’re using a CNC machine that heats up during operation. Here’s how the air cooled chiller steps in:
The warm water comes back from the CNC.
It enters the evaporator inside the chiller.
The refrigerant in the evaporator absorbs that heat and turns into a gas.
The gas gets compressed—its temperature and pressure rise sharply.
That hot gas goes through the condenser. Fans blow outside air across coils, removing the heat.
The refrigerant turns back into a liquid, and the cycle repeats.
Your machine keeps running cool—and you don’t need a water tower or much operator attention.
Why Do Customers Choose Air Cooled Units from Us?
Some of our long-term clients choose air cooled chiller systems for one reason: they just work. Even without an in-house technician, these systems are straightforward to install, easy to control, and rarely break down when used correctly.
Clients also appreciate that we offer:
Tailored sizing based on actual load
Remote monitoring options
Short lead times, even for custom orders
Reliable after-sales support (yes, even overseas)
As a practical air cooled chiller supplier, we’re not here to sell what’s biggest or most expensive—we help customers find what runs stably for years.
In modern manufacturing, hot melt adhesive is widely used in various industries, including packaging, woodworking, electronics, and automobiles. However, the traditional manual scraping gun method has some inconveniences in large-scale production, such as low production efficiency and high labor costs. In order to overcome these challenges, engineers have developed hot melt adhesive automatic scraping gun technology, providing companies with a tool to improve efficiency and reduce costs.
Limitations of traditional manual scraper guns
In traditional hot melt adhesive applications, workers need to manually bring the hot melt adhesive gun close to the target surface and manually control the spraying and scraping process of the hot melt adhesive. This method has several disadvantages. First, the manual scraper gun needs to be repeatedly positioned and controlled, and the errors caused by this are difficult to avoid, resulting in uneven coating and unstable quality. Second, long-term use of manual scrapers can easily cause worker fatigue and reduce worker work efficiency. In addition, manual scrapers also cause waste of hot melt adhesive because operators often find it difficult to accurately control the amount of hot melt adhesive used.
Advantages of hot melt adhesive automatic scraper
In order to solve the problems of traditional manual scraper, automation technology is gradually applied to the hot melt adhesive field. The hot melt adhesive automatic scraper system consists of a coater, a sensor and a control system. The coater can spray the hot melt adhesive evenly onto the target surface through precise control. At the same time, the sensor can monitor the shape and state of the target surface and automatically adjust the height and speed of the scraper to ensure the consistency and accuracy of the coating. The control system can realize the automated hot melt adhesive scraper process according to the preset parameters and process requirements.
Application fields of hot melt adhesive automatic scraper
Hot melt adhesive automatic scraper technology has been widely used in many industries. In the packaging field, it is used in carton sealing, bag sealing, tape bonding and other links to improve production speed and quality stability. In the woodworking industry, hot melt adhesive automatic scraper can be used in furniture manufacturing, board bonding and other processes to improve production efficiency and product quality. In the electronics industry, automatic scrapers can be used in circuit board assembly, component packaging and other processes to improve work efficiency and reliability. In the automotive manufacturing field, hot melt adhesive automatic scraper can be used in body sealing, interior bonding and other processes to improve bonding effect and product reliability.
The application of hot melt adhesive automatic scraper technology has brought great benefits to all walks of life. It can improve production efficiency, reduce labor costs, ensure the consistency of coating quality, and reduce the waste of hot melt adhesive. With the continuous development of automation technology, hot melt adhesive automatic scraper will be used in a wider range of fields and continue to create greater economic benefits and development opportunities for enterprises.
As an efficient and convenient bonding equipment, hot melt adhesive machine is widely used in packaging, textile, automobile manufacturing and other fields. However, in actual use, hot melt adhesive machine often encounters a thorny problem - carbonization. The generation of carbonization not only affects the normal operation of the equipment, but may also lead to product quality degradation or even equipment damage. Therefore, understanding how to effectively prevent carbonization, the impact of carbonization on use, and the correct treatment method after carbonization is crucial to ensure the stability of the hot melt adhesive machine and extend its service life.
Carbonization is mainly caused by the following factors:
· Too high temperature: Hot melt adhesive needs to melt at a certain temperature, but if the temperature is set too high or the equipment is in a high temperature state for a long time, it will cause the colloid to decompose.
· Too long residence time: The hot melt adhesive stays in the heating system for too long and fails to be discharged in time, which is prone to oxidation and decomposition.
· Air ingress: If the equipment is not well sealed, oxygen in the air enters the adhesive tank or pipe, which will accelerate the oxidation reaction of the colloid.
· Material problem: Some types of hot melt adhesives are sensitive to high temperatures and are more prone to carbonization.
· Equipment aging: Hot melt adhesive machines that have been used for a long time may have problems such as aging of heating elements and failure of temperature control systems, which may lead to abnormal temperature increases.
In order to reduce the occurrence of carbonization of hot melt adhesive machines, the following are some practical preventive measures:
1. Reasonable temperature control
· Set the appropriate heating temperature according to the type of hot melt adhesive used. It is generally recommended to control the temperature at the lower limit of the recommended range to reduce the risk of colloid decomposition.
· Regularly check whether the temperature control system is accurate to avoid abnormal temperature rise due to equipment failure.
2. Shorten the residence time of colloid
· During the production process, minimize the residence time of hot melt adhesive in the heating system. The production process can be optimized to speed up the flow rate of colloid and reduce the time the colloid is exposed to high temperature.
· If the equipment is out of use for a long time, the residual colloid in the glue tank and pipeline should be cleaned in time to avoid carbonization due to long-term standing.
3. Maintain the tightness of the equipment
· Ensure that the hot melt adhesive machine's adhesive tank, pipes, nozzles and other parts are well sealed to prevent air from entering and contacting the adhesive.
· For open-design equipment, consider installing a dust cover or using an inert gas (such as nitrogen) for protection to reduce the occurrence of oxidation reactions.
4. Regularly maintain the equipment
· Regularly check the heating elements, temperature control system and pipe connections of the hot melt adhesive machine to ensure that the equipment is operating normally.
· When cleaning the adhesive tank and pipes, the residual colloid should be thoroughly removed to avoid excessive accumulation and carbonization.
5. Choose high-quality hot melt adhesive
· Different types of hot melt adhesives have different tolerance to high temperatures. It is recommended to choose products with good stability and anti-aging properties.
· When changing the brand or model of hot melt adhesive, be sure to test it first to ensure that it is compatible with the existing equipment.
6. Pay attention to the frequency of adding glue
·During the production process, hot melt glue should be added in an appropriate amount according to actual needs to avoid adding too much glue at one time, which will cause some glue to be carbonized due to long-term non-use.
Once carbonization is found in the hot melt adhesive machine, the following steps should be taken in time to deal with it:
1. Stop the equipment immediately
·When carbonization is detected, the hot melt adhesive machine should be turned off immediately and the heating operation should be stopped to prevent further carbonization.
·Cut off the power supply and wait for the equipment to cool down completely before proceeding with the subsequent operation
2. Clean carbides
· Use special tools or chemical cleaning agents to remove carbides on the adhesive tank, pipes and nozzles.
Common cleaning methods include:
o Mechanical cleaning: Use scrapers, brushes and other tools to manually remove carbides, which is suitable for mild carbonization. o Chemical cleaning: Select a cleaning agent suitable for hot melt adhesive materials (such as professional adhesive remover), inject it into the equipment and soak it for a period of time, and rinse it with clean water after the carbides soften.
o High temperature burning: For stubborn carbides, high temperature burning can be used for cleaning, but it is necessary to control the temperature to avoid damaging equipment components.
3. Check the equipment condition
· After cleaning, carefully check whether there is wear or damage to the glue tank, pipes and nozzles. If necessary, replace damaged parts in time to ensure the normal operation of the equipment.
· Check the performance of the heating elements and temperature control system to ensure that they are working properly.
4. Recalibrate the temperature setting
· Before restarting the equipment, recalibrate the temperature setting to ensure that it meets the requirements for the use of hot melt adhesive.
· Perform a trial run to observe whether the equipment is operating normally and whether the glue flows out evenly.
5. Strengthen daily maintenance
· Analyze the causes of carbonization problems that have occurred and formulate improvement measures to avoid similar situations from happening again.
· Strengthen the daily maintenance of equipment, clean the rubber tank and pipelines regularly, and ensure that the equipment is always in good condition.
The elastic string glue gun is specially developed and designed for the rubber application of sanitary napkins and diaper products. It has the advantages of uniform, delicate and strong covering power. It adopts an air-on-air-off design, which is responsive and reliable. Built-in filter can reduce failures caused by clogged nozzles. Built-in imported high-quality sealed structural components ensure stable operation and long-lasting durability of the gun body. The solenoid valve of the gun body can be powered by DC24V or AC220V according to the user's requirements. Can be modified and applied to other brands of hot melt adhesive equipment according to user requirements.
1. Application of the latest design concepts and balancing technology: Adopting the most advanced design concepts and balancing technology may mean higher work efficiency and a better user experience.
2. Increase the service life of the gun body and reduce maintenance: By improving the design and using high-quality components, the service life of the gun body is increased and maintenance costs are reduced accordingly.
3. Imported core components: The use of imported core components can improve the overall quality and stability of the spray gun, thereby extending its life and improving performance.
4. The number of glue breaks is as high as 3600 times/minute: This shows that the spray gun is fast and reliable in operation and is suitable for mass production needs.
5. Winding glue spraying method: ensure that each rubber band is firmly fixed within 360 degrees, improving product quality and efficiency.
6. High-efficiency and powerful back-extraction module: it can cleanly disconnect the glue, avoid unnecessary impurities or tailing, and ensure production quality.
7. Dual guide function: ensures that each rubber band can be wound accurately, avoiding waste and errors, and improving production efficiency and quality.
