DL/DD/DJ series Stretched Type Evaporator meet the refrigeration needs of cold storage in multiple scenarios

In the field of industrial refrigeration and food processing, Stretched Type Evaporator are efficient and energy-saving refrigeration equipment, which are widely used in cold storage systems. According to different storage temperature requirements, Stretched Type Evaporator are divided into three models: DL, DD, and DJ, which are suitable for preservation, refrigeration, and quick freezing scenarios respectively. This article will introduce the structure, technical characteristics, applicable scenarios and market positioning of this product in detail.

The extended evaporator is an air cooler evaporator with a stretched air outlet design. Its core advantage is that it expands the heat exchange space inside the air cooler, thereby increasing the wind pressure and air supply range, making the cooling effect better. This product is not only suitable for a variety of cold storage temperature requirements, but also has the advantages of compact structure, easy installation, energy saving and high efficiency.

1. Product structure and technical characteristics

(1) Structural design
The extended evaporator adopts a variety of advanced processes in structural design to ensure its efficient operation and long-term stability in the cold storage environment. First, its shell is made of high-quality steel plate, which not only has good mechanical strength, but also has surface treatment to make it have excellent corrosion resistance, suitable for humid and salt-fog cold storage environment, while maintaining beautiful appearance, easy maintenance and cleaning.

In the heat exchange part, the extended evaporator adopts the structural design of "copper tube jacket aluminum fin". This structure combines the high thermal conductivity of copper tubes and the light and high thermal conductivity of aluminum fins, which significantly improves the heat exchange efficiency of the entire evaporator. The corrugated structure of the aluminum fins further enhances the contact area with the refrigerant, thereby improving the heat exchange capacity per unit volume, helping to quickly absorb heat in the cold storage and improve refrigeration efficiency.

In addition, the evaporator core undergoes strict cleaning treatment to prevent "dirty blockage" and "ice blockage" caused by the accumulation of impurities or dirt inside the system. This design not only extends the service life of the equipment, but also ensures the stable operation of the refrigeration system, avoiding the decline in refrigeration efficiency or equipment failure caused by blockage or icing.

(2) Fan performance
The fan equipped with the extended evaporator is an important guarantee for its efficient refrigeration performance. The fan adopts the design concept of high efficiency and low noise, and has the characteristics of large air volume and high air pressure. It can effectively promote the circulation of cold air inside the cold storage, thereby achieving a wider air supply range and more uniform temperature distribution.

Due to the high air pressure characteristics of the fan, the cold air can overcome greater resistance during the transportation process, reduce the occurrence of frost, thereby extending the defrosting interval time, reducing maintenance frequency and energy consumption costs. At the same time, the low noise design also makes the equipment have less impact on the surrounding environment during operation, and is suitable for places that are sensitive to noise.

The efficient operation of the fan not only improves the refrigeration efficiency, but also optimizes the temperature control effect of the cold storage, ensuring that the food is stored within the optimal temperature range, thereby extending the shelf life and improving the freshness and quality of the food.

(3) Installation and compatibility
In terms of installation, the extended evaporator adopts a "long slot hanging point" design, which is compatible with M12 screws, which is convenient for quick and stable installation in the cold storage. This design not only improves the installation efficiency, but also reduces the damage to the cold storage structure during installation, ensuring that the equipment is more stable during operation.

At the same time, the product has good compatibility and can be used with compression condensing units of different refrigeration capacities. Whether it is used for fresh-keeping storage, cold storage or quick-freezing storage, the extended evaporator can be flexibly configured according to actual needs to meet the requirements of different storage temperatures and refrigeration capacities. This flexibility makes the product suitable not only for small and medium-sized cold storage, but also for large cold storage systems, with wide applicability.

In addition, the installation method of the extended evaporator supports a variety of installation methods, including hanging and wall-mounted, which can be selected according to the specific layout and space conditions of the cold storage, further improving the practicality and adaptability of the equipment.

2. Product application scenarios
The extended evaporator is a high-efficiency refrigeration equipment widely used in cold storage systems. According to different storage temperature requirements, it is divided into three models: DL, DD and DJ, which are suitable for fresh-keeping, refrigeration and quick-freezing scenarios respectively. The following is a detailed description of the applicable scenarios of each model:

DL type: suitable for cold storage at about 0℃, suitable for preserving perishable foods such as fresh eggs, vegetables, edible fungi
The DL type extended evaporator is suitable for cold storage environments with a storage temperature of about 0℃, and is mainly used for food preservation. This type of evaporator has a compact structure and high heat exchange efficiency. It can effectively reduce the temperature in the cold storage and maintain the freshness and quality of food.

Due to its gentle temperature control, it is suitable for storing temperature-sensitive foods such as fresh eggs, vegetables, edible fungi, etc. These foods are prone to deterioration in low temperature environments, so stable temperature control and good air circulation are required. The DL type evaporator ensures that food is stored for a long time in an environment of about 0℃ through uniform air supply and efficient heat exchange, extending its shelf life.

DD type: suitable for cold storage at about -18℃, suitable for freezing/refrigerating beef, mutton, fish, seafood, etc.
The DD type extended evaporator is suitable for cold storage with a storage temperature of about -18℃, mainly used for freezing and refrigerating food. This type of evaporator has a strong refrigeration capacity, which can quickly reduce the temperature of food to -18℃ and keep the food frozen at this temperature.

This temperature range is suitable for long-term storage of frozen foods such as meat, fish, and seafood. Since -18℃ is the internationally accepted standard freezing temperature, many food processing and logistics industries use this temperature for freezing and transportation of food. DD evaporator ensures that the quality of food will not be affected by temperature fluctuations during the freezing process through efficient cold air circulation and stable temperature control.

DJ type: suitable for cold storage at -25℃ and below, mainly used for quick freezing of poultry, livestock, seafood, and dairy products
DJ type extended evaporator is suitable for cold storage with a storage temperature lower than or equal to -25℃, mainly used for processing and storage of quick-frozen food. This type of evaporator has a stronger refrigeration capacity and can quickly reduce the food temperature to below -25℃ for rapid freezing.

This low temperature environment is particularly suitable for foods such as poultry, livestock, seafood, and dairy products that have extremely high temperature requirements. Quick freezing technology can effectively lock in the nutrients and taste of food, while reducing the formation of ice crystals, thereby improving the preservation effect of food. DJ type evaporator uses a fan design with large air volume and high air pressure to ensure that cold air can quickly cover the entire cold storage area and achieve uniform cooling.

3. Product advantages

(1) High space utilization, does not occupy the cold storage area
The extended evaporator has a compact structure, is easy to install, and does not occupy valuable space in the cold storage. It adopts a long slot hanging point design, which is suitable for a variety of installation methods and can flexibly adapt to different cold storage layouts.

(2) High cooling efficiency and good preservation effect
Through the stretch-type air outlet design, the cold air is more evenly distributed, the cooling speed is fast, and the storage temperature is stable. It is especially suitable for preservation, refrigeration and quick freezing scenarios, and can effectively extend the shelf life of food.

(3) Good energy-saving effect and low operating cost
Adopting high-efficiency fans and copper-aluminum fin structures, large air volume and strong air pressure, it reduces frosting, prolongs defrosting time, reduces energy consumption, and saves long-term operating costs.

(4) Wide range of applications and can be customized for installation
The product is divided into three models: DL, DD, and DJ, which are suitable for 0℃ preservation, -18℃ refrigeration, and -25℃ quick freezing environments respectively. It supports customized shell materials and installation methods to meet the needs of different customers.

4. Product models and specifications

DL type: suitable for fresh-keeping warehouses around 0℃, such as vegetables, fruits, tea, etc.

DD type: suitable for cold storage around -18℃, such as meat, fish, aquatic products, etc.

DJ type: suitable for quick-freezing warehouses at -25℃ and below, such as poultry, livestock, seafood, dairy products, etc.

5. Typical application scenarios

Fresh-keeping warehouse: DL type is used to preserve vegetables, fruits, edible fungi, etc.

Refrigerated warehouse: DD type is used to freeze or refrigerate meat, fish, aquatic products, etc.

Quick-freezing warehouse: DJ type is used to quick-freeze poultry, livestock, seafood, dairy products, etc.