Hinged door for cold room

Cold Room Hinged Door designed and manufactured by OnlyKem is widely used for cold rooms or freezer rooms from temperatures of -36° C to normal operating temperatures. Cold room hinged door panels are seamlessly joined together by means of tongue and groove, they are locked together by cam-lock on each side of the panel to ensure air tight joints. Cam-lock design fastener to install with the cold room tightly and strongly. The cold room door panel with thickness of 100mm or 150mm is commonly applied. All our cold room doors are made with the CFC-free insulated PU panel covered with stainless steel or galvanized steel that meet EC/USDA international hygiene standards, they are are available in customized sizes and structure. The outstanding insulation and sealing properties of the PU Panel door makes a contribution to the energy-saving operational of cold rooms and freezer rooms. It has the characteristics of perfect sealing, reliable, safe and easy to operate manual or automatically.





Features of Cold Room Hinged Door



Excellent thermal insulation.
Outstanding sealing.
Reliable structure.
High quality hardware parts.
Customized door sizes.
Adaptive design for varying installation scenarios.
Easy to operate manual or automatically.
Fire resistance
Safe Escape device. when locked inside the cold room, push the escape device ,then you can come out.

Applications of Cold Room Hinged Door

Hinged doors are widely applied to the walk in cold room, freezer room, blast freezer room with wide range of room temperature. They are also used for clean room, green house, planting room etc. Followed are some typical applications for cold room and freezer room.

The important role of PU panel in refrigeration industry

PU panel is also called PU sandwich panel, PUR Panel or PUF Panel in which polyurethane foam is been sandwiched between the two outer covers. The CFC-free insulated PU panel is commonly used as the cold storage panels due to its advantageous mechanical, chemical, biological and moisture properties, it is excellent to prevent thermal conductivity, restrain growth of fungi, keep out moisture ingress. We are engaged in manufacturing reliable PU sandwich panels in variegated specifications.

OnlyKem PU panels are available in customized sizes and structure for storage temperature ranges from -36°C to 10°C. The outer two layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc., that can meet the international hygiene standards.







The sizes of OnlyKem PU Panel is customized by your cold room requirements, the maximum length is up to 12,000mm, the available width is 960mm or 1000mm, the available thickness is with industrial standard of 50mm, 75mm, 100mm, 120mm, 150mm and 200mm. PU panel is suitable for low and high temperature controlled applications like cold room and freezer room, it has the characteristics of good thermal insulation, low cold air leakage, easy to transport and install, lower running cost and higher fire resistance property. B1 and B2 grade PU panels are available for cold room. All the PU panels are connected by the easily operated built-in cam-lock.

In recent years, we keep on investing more than 1,000,000 dollars to update the automatic manufacturing production lines and bsic product facilities. Our daily PU panel output is about 3000 square meters. Our high quality PU panels have flat and elegant appearance. The foaming time of each panel is 30 to 40 minutes, so the density uniform and the size stable.



Specifications of PU Panel







Features of PU Panel


Lightweight and modularized.
High mechanical durability.
Less construction cost.
Perfect isolation attributes.
Good thermal preservation.
Water proof, sound proof.
Energy saving and fire resisting.
Competitive in price.
The coated layers are available in profile with zinc coated, galvanized steel, embossed aluminum and stainless steel etc.
The EC/USDA international hygiene standards.





Installation Instruction


As the important component of the cold room, OnlyKem Brand PU Panels are designed and manufactured with detailed consideration for installation and maintenance. Followed are some instructions:
Before the installation, make sure that the locking devices are at the stop position. To do so, turn the locking devices counter-clockwise, using a wrench with force, until it stops.

2.Push panels together and turn wrench 1/4 turn clockwise. This will engage the male locking device ‘arm’ over female locking device ‘pin’.

3. Keep turning the wrench for another turn until the wrench stops. If there are any problems during the operation of cam locks, turn the wrench counter-clockwise with force until it stops moving any further. This will put the locking device at its original position and you can try to assemble the panel again by moving the wrench in a clockwise direction.

Any questions, please send email to us at info@coldroomplus.com.


Products and Manufacturing Process


OnlyKem Brand Pu Panel factory is equipped with automatic production lines. We had 12 years of experiences of manufacturing PU Panels with daily output up to 3,000 square meters. We have competitive advantages in supply chain management, optimized manufacturing process and quality control which power us to keep high product quality, shorter delivery time and competitive cost to meet the demands of our worldwide customers. Most products had been kept up with the international forefront counterparts. Some of them have enjoyed leading position. Our PU panel products are sold in more than 50 countries around the world.

Seafood Cold Storage Warehouse

Seafood cold storage warehouse is more and more popular in Philippines nowadays ,the surrounding environment around the sea created the advantage of its fishery. Philippines is our traditional market, up to now we have built more than 10 sets large projects and our customers cover fishery,coffee ,poultry business and etc. The first set has been installed in 2010, and it is running smoothly at present. For one complete production line for seafood cold storage warehouse should include working area, loading bay , freezer room, blast freezer,prepare room,ante room and etc. For one smooth flow, receiving the fresh seafood in loading bay,then put into prepare room or working room to put down the temperature ,then put in blast freezer for quick freeze ,finally ,put it into freezer room for a long time storage .




Characteristics of Seafood cold storage warehouse :
Working area :
For seafood treatment,it will release of acid and other corrosive substances, should have high request for inside PU panels and evaporator . In this situation, we use stainless steel for inside pu panels and the cover for evaporator ; for fins of evaporator, use hydrophilic aluminum foil (blue color) which has anti-corrosion effect .
Another point is there has people working inside, in order to protect people from strong wind blowing directly , the evaporator air flow must be softly blow out ,so we will use dual throw model (SDL series)evaporator for working area . SDL series are used in food process workshop ,the temperature is above +2℃.



Blast freezer for seafood cold storage warehouse:
In order to keep the good taste and keep in a long time storage , fresh seafood before put into the freezer storage should be quick freezed in blast freezer first,after 5-8 hours ,the core temperature can become -18 ℃,then put it into keeping freezer for a long time storage ;
Normally , blast freezer dimensions will be small size , we will use land type evaporator . This design will save some space and make the air flow more balance .



Keeping freezer for seafood cold storage warehouse :
After quick freeze in blast freezer ,it will be stored in keep freezer (-20℃)for a long time .
New design with our engineer, Europe style color with strong tunnel fans,large air flow.
Anti-corrosion fins with blue color .
41mm wall thickness for coppoer pipes .






Rack unit :
Known that poor water quality in Philippines,evaporative condenser is not very suitable for this environment using , so we use the air cooled model ;multiple units can use a siphon device to simplify the system design.
Thermosiphon refrigeration cycle (also known as heat circulation refrigeration cycle) used in screw compression refrigeration system. is most suitable for the system with poor water quality. Its characteristics are: small size and reliable oil cooling. The oil temperature after cooling is generally in 10 ℃to 20 ℃ higher than the condensing temperature. Compared with water cooling, no cooling water is needed and water system is simplified; there is no problem of heat exchanger tube scaling to affect the heat transfer of oil cooler, and the cooling efficiency can be improved; there is no influence on the exhaust volume and power consumption of the compressor.
To sum up, thermosiphon refrigeration cycle is a developed energy-saving refrigeration system for cooling refrigerating oil recently. At present, many foreign countries have adopted it.
PLC system ,easy to debugger and maintain .




For loading bay :
Mainly need to receive and delivery the seafood, use roll up door that connect with shipping truck or container .
For one complete roll up door, includes door body , lifting platform and edge package.
Usually keep it in +8℃room temperature .
Door size and lifting platform should depend on the truck or container size to design.
For basic cement platform building , it should depend on the height of shipping truck .



For back up parts :
For large seafood cold storage warehouse project, there are consumables need to back up, it includes compressor, fan motor for evaporator , fan motor for condenser, heater,PLC system and etc ;

The meaning of OnlyKem in Chinese is grateful,promise and success, OnlyKem don’t want to only be a successful businessman, we would like to be skilled craftsman .As we think as long as taking customer needs as a primary task,have a heart of gratitude and sincerity, the result won’t be bad . The idea of making a perfect machine is always fascinating for us .Our stable quality ,competitive price and immediate service help us possess more and more customers . In the future, we believe that you can see more and more OnlyKem seafood cold storage warehouse will be building in Philippines and also other countries !

Unit Cooler

Unit Cooler (also called air cooled evaporator) is commonly used for optimal distribution of cooled air in refrigerated cold rooms or freezer rooms, it is one of the important component of in the cold storage system. OnlyKem unit coolers are designed and manufactured for larger walk in cold room or freezer room, they may also be utilized in warehouse and other cold storage applications in the commercial and industrial refrigeration markets.

Our unit coolers are constructed of a heavy-gauge, smooth finished aluminum cabinet or galvanized steel with a copper coils, aluminum plate fin foils and permanently lubricated ball bearing fan motors with inherent thermal protection. These draw-through units are designed for ceiling mounting in cold room and are available in air defrosting, electric defrosting and hot gas defrosting configuration, the heat exchange with internal cold storage room can be achieved through inner low temperature refrigerant. OnlyKem had designed 6 series, more than 100 standard models air coolers to satisfy your demands with 15 years of experiences. ODM and OEM are also available .



Specifications of Unit Cooler



Unit Cooler Features


High quality G90 galvanized steel cabinet provides a heavy duty, durable structure
Hinged design make sure convenient maintenance.
High capacity 5/8″ diameter copper tube evaporator coils
High temperature applications feature 6 FPI coils for increased heat transfer. Medium temperature applications feature 4 FPI , low temperature applications feature 3 FPI evaporator coils increasing protection against air restriction due to ice formation
High efficient and totally enclosed fan motors with long reliable operation
Axial fan, permanently lubricated ball bearing fan motor, low noise, long work life.
Available in air, electric and hot gas defrost configurations
Electric defrost heaters are inserted into coil slab to provide efficient electric defrost. Heater elements are stainless steel sheathed and are self-centering, overloading thermal protection.
Both International and Chinese brand fans available.


Some Typical Unit Coolers

Unit cooler is designed mainly according to the cold room capacity, the internal temperature of cold room and the refrigerating output of condensing unit. Followed are some typical OnlyKem unit coolers.