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The working principle and structure analysis of vehicle-mounted refrigerated cabinet

The working principle and structure analysis of vehicle-mounted refrigerated cabinet

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  • Time of issue:2020-12-18
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(Summary description)The working principle and structural analysis of the vehicle-mounted refrigerator 　　 The basic working principle of the refrigerator is the same as that of the general land-based refrigerator, but due to the particularity of the car air conditioner installed on the moving car. The main differences are: 　　First, the general power on land is electricity, and the power for car operation is taken from the car engine; 　　Second, general on-land parking is achieved by controlling the compressor motor circuit to turn on and off, while the car is extended and turned on. Ang controls the power on and off of the windings of this shrinking chamber; 　　 Third, in order to reduce vibration and noise, small refrigerators often use hermetic compressors, while automobile air conditioners are more ineffective than compressor and engine power transmission.

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The working principle and structure analysis of vehicle-mounted refrigerated cabinet

The working principle and structure analysis of vehicle-mounted refrigerated cabinet

news

The working principle and structure analysis of vehicle-mounted refrigerated cabinet

(Summary description)The working principle and structural analysis of the vehicle-mounted refrigerator 　　 The basic working principle of the refrigerator is the same as that of the general land-based refrigerator, but due to the particularity of the car air conditioner installed on the moving car. The main differences are: 　　First, the general power on land is electricity, and the power for car operation is taken from the car engine; 　　Second, general on-land parking is achieved by controlling the compressor motor circuit to turn on and off, while the car is extended and turned on. Ang controls the power on and off of the windings of this shrinking chamber; 　　 Third, in order to reduce vibration and noise, small refrigerators often use hermetic compressors, while automobile air conditioners are more ineffective than compressor and engine power transmission.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-12-18
  • Views:0
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The working principle and structure analysis of vehicle-mounted refrigerated cabinet
　　The basic working principle of the refrigerated cabinet is the same as that of the general land-based refrigerated fresh-keeping cabinet, but due to the particularity of the car air conditioner installed on the moving car. The main differences are:
　　First, the general power on land is electricity, and the power for car operation is taken from the car engine;
　　Second, the general on-land parking and startup are achieved by controlling the on and off of the compressor motor circuit, while the extension and startup of the car controls the on and off of the compressor windings;
　　Third, in order to reduce vibration and noise, small refrigerators often use hermetic compressors, while automobile air conditioners are beyond the requirements of compressor and engine power transmission, so they can only adopt open-cavity type.
　　Various types of car refrigerators vary with car models and requirements. For high-end coaches, luxury models are required, comfort in the car, airflow organization of the air-conditioning system, and temperature adjustment and control are all automatic; for large passenger cars, a certain degree of comfort is required, and investment, operation and maintenance costs must be taken into account; and for small cars The requirements for air conditioners are more focused on compact structure and convenient maintenance.
It mainly includes compressors, condensers, dry receivers, expanders, evaporators, wind parks and pipelines, control components, etc.
　　compressor
　　Commonly used compressors are reciprocating piston type, swash plate type and rotary type. Rotary type is divided into fixed type, orange Jt type, screw type, scroll type and so on. The following is only a brief introduction to the reciprocating piston type and swash plate type that are common in Ane. The working principle of compressed vanadium in reciprocating piston compressors is exactly the same as that of ordinary piston compressors. Its speed is 700 Tev/m plus when the car engine is in commercial load. When the car is running at 40km/h, the compressor speed is 1800 rev/m5n, and the maximum speed can reach 2200 rev/min. The compressors of these models also have an automatic unloading mechanism. The condenser and liquid reservoir of the refrigerated cabinet can adjust the exhaust steam of the compressor at high speed. Before the mouth. Common models of reciprocating piston compressors are 2c90c and 2M110B. All the systems that reproduce the 12R engine use 2c9Dc reciprocating piston compressors.

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Next: What problems should be paid attention to when custom-made commercial refrigerators?
Previous: Maintenance methods for horizontal refrigerators and kitchen freezers
Next: What problems should be paid attention to when custom-made commercial refrigerators?

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What problems should be paid attention to when transforming a warehouse into a cold storage

In order to store fruits for a long time, many vendors have transformed their original warehouses into fruit fresh-keeping cold storages. However, there are still big differences between warehouses and cold storages. So what issues should be paid attention to when transforming warehouses into cold storages! 1. It is necessary to consider whether the thermal insulation structure of the original warehouse is suitable for cold storage and preservation. Generally, the exterior of the warehouse is made of polystyrene double-layer color steel plates or rock wool boards. This type of structure is not suitable for refrigeration, preservation, and quick-freezing. It is only suitable for storage at 15°C. If it is lower than 15°C ℃, it is recommended to add polyurethane double-sided color steel warehouse board of corresponding thickness in the warehouse. Generally, this kind of warehouse board has good heat preservation effect and high fire resistance level. 2. The bearing capacity of the steel structure at the top of the original warehouse needs to be considered. Some warehouse roofs use arc-shaped round pipe structures, which have limited force and cannot withstand large-area cold storage roofs. This is also the need to pay attention to the transformation. 3. Some warehouses are simple cement floors and are not suitable for reconstruction and construction of cold storage. Therefore, ground insulation treatment needs to be considered. If the temperature is below 0℃, the ventilation pipe must be pre-embedded to prevent the foundation from sinking due to the low temperature. In this way, the bottom material should be extruded board, air- and moisture-proof layer, concrete layer, etc., in short, moisture, water and heat preservation should be done. 4. Consider the carrying capacity of power equipment. Since it used to be an ordinary warehouse, the original power may not take into account the use of later equipment, so we also need to pay attention to power cables. Electricity for cold storage generally requires 380V commercial electricity. Maungsheng Refrigeration does not recommend using 220V for cold storage construction, even small fresh-keeping cold storage is not recommended. The specific cold storage construction uses 200V electricity or 380V electricity can see detailed analysis. 5. It is necessary to consider whether the warehouse can penetrate the wall hole, because the cold storage needs to be connected with the internal unit during installation to ensure its freezing effect. 6. The design of cold storage shelves also needs to consider other factors, such as: the selection of welding electrodes in the cold storage should correspond to the material and welding process requirements of the welding base material and ensure the welding quality of the welds. The characteristics of frosting in the cold storage should be considered, the weight gain should be appropriately considered when calculating the shelf selection, and the customer's refrigeration and defrosting process should be considered for the corrosion resistance of the structural spray coating.
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The importance of cold storage design

Usually, customers will ask the cold storage engineering company to produce a detailed cold storage design plan in the initial stage of consulting the construction of the cold storage. Especially for large-scale cold storage, the design plan is the most important part of the entire cold storage construction process. Today, I will introduce to you the importance of cold storage design.
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