Storehouse body structure of differential pressure type quick-freezing refrigeration house

Abstract

The invention provides a differential pressure type quick-freezing refrigeration house body structure which comprises a refrigeration house body, a refrigeration unit is arranged on one side of the top of the refrigeration house body, a flow guide top plate is connected to the air outlet side of the refrigeration unit, a storage rack is arranged below the flow guide top plate, and an air return passageway is arranged on the side, close to the refrigeration unit, of the refrigeration house body. An air return opening is formed in the bottom of the air return passageway, and the control system is electrically connected with the refrigeration unit; through the design, the freezing speed is remarkably increased, the center temperature of food materials can be reduced to be below-18 DEG C within 2 hours under the normal condition, and nearly half of time is saved compared with a traditional method; meanwhile, the comprehensive operation cost is reduced, and the efficient and energy-saving refrigeration unit is adopted, so that the average energy is saved by about 20% compared with a common refrigeration house; more importantly, the refrigeration house also enhances the system reliability and the user experience, the automation degree is high, the manual intervention is reduced, and meanwhile, the risk of accidents is also greatly reduced by a built-in safety protection mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing and storage equipment, and in particular to a pressure differential quick-freezing cold storage body structure, which is mainly suitable for commercial freezers, food processing plants and other scenarios that require efficient and rapid freezing of large quantities of food, and is especially suitable for the storage of perishable foods such as seafood and meat. Background Art

[0002] At present, the widely used cold storages in the market mainly rely on compressor refrigeration technology and liquid nitrogen spray freezing technology. The former uses refrigerant circulation to reduce the temperature. Although the cost is low, the cooling speed is slow and the energy consumption is high; the latter achieves rapid freezing by directly spraying liquid nitrogen on the surface of the food. The freezing speed is fast, but the initial investment is huge, the operating cost is high, and the safety risk is relatively large. In recent years, as consumers' requirements for food safety and quality have increased, the demand for freezing technology in the food processing industry has also developed in a more environmentally friendly and efficient direction.

[0003] In order to meet the needs of rapid freezing, the industry generally adopts enhanced heat exchanger design, increased evaporation area or multi-stage compression to improve the cooling efficiency of traditional compressor systems. In addition, some studies have proposed to improve heat transfer performance and reduce energy consumption by adjusting the type of refrigerant and optimizing the fluid flow path. However, these improvement measures are often accompanied by complex structural design and high maintenance costs, and fail to fundamentally solve the problem of low rapid freezing efficiency. On the other hand, although liquid nitrogen freezing technology has excellent rapid freezing capabilities, its high cost limits its widespread application in small and medium-sized enterprises.

[0004] In summary, existing rapid freezing technologies generally have problems such as high energy consumption, high cost, and poor safety, and it is difficult to strike a balance between economy and practicality. Especially in large-scale commercial situations, how to balance initial investment and operating costs has become an urgent problem to be solved.

[0005] The present application proposes a pressure differential quick-freezing cold storage structure under the above background. Summary of the invention

[0006] The object of the present invention is to provide a pressure differential quick freezing cold storage body structure to solve the problems existing in the above-mentioned prior art.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a storage body structure of a pressure differential quick-freezing cold storage, comprising a cold storage body, a refrigeration unit is arranged on one side of the top of the cold storage body, an air guide top plate is connected to the air outlet side of the refrigeration unit, the air guide top plate is horizontally fixed to the upper part of the cold storage body, a storage rack is arranged below the air guide top plate, a return air aisle is arranged on one side of the cold storage body close to the refrigeration unit, a return air port is arranged at the bottom of the return air aisle, and a control system is also included, and the control system is electrically connected to the refrigeration unit.

[0009] Preferably, the inner wall of the cold storage body is paved with a heat-insulating layer.

[0010] Preferably, the inner corners of the cold storage body are provided with arc-shaped flow guide structures.

[0011] Preferably, a guide rail is provided at the bottom of the cold storage body, and the guide rail cooperates with the storage rack.

[0012] Preferably, the refrigeration unit includes a compressor, a condenser, an expansion valve and an evaporator, a loop is formed between the compressor, the condenser, the expansion valve and the evaporator, the loop contains refrigerant, the evaporator is arranged opposite to the air outlet, and a fan is provided in the air outlet.

[0013] Preferably, the control component comprises a controller, the controller is electrically connected to a temperature sensor, a humidity sensor and a refrigeration unit respectively, and the temperature sensor and the humidity sensor are arranged in the cold storage body.

[0014] Preferably, a vent is provided on the top of the cold storage body.

[0015] Preferably, a vertical airflow guiding device is also provided in the cold storage body.

[0016] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0017] The present invention provides a pressure differential quick-freezing cold storage body structure, including a cold storage body, a refrigeration unit is arranged on one side of the top of the cold storage body, a guide top plate is connected to the air outlet side of the refrigeration unit, a storage rack is arranged below the guide top plate, a return air channel is arranged on the side of the cold storage body close to the refrigeration unit, a return air port is arranged at the bottom of the return air channel, and also includes a control system, which is electrically connected to the refrigeration unit; the above design significantly improves the freezing speed, and under normal circumstances, the center temperature of the food can be reduced to below -18°C within 2 hours, which saves nearly half the time compared with the traditional method; at the same time, the comprehensive operating cost is reduced, and by adopting an efficient and energy-saving refrigeration unit, the average energy saving is about 20% compared with ordinary cold storage; more importantly, the cold storage also enhances system reliability and user experience, has a high degree of automation, reduces manual intervention, and the built-in safety protection mechanism also greatly reduces the risk of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the storage structure of a pressure differential type quick-freezing cold storage provided by the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] The object of the present invention is to provide a pressure differential quick freezing cold storage body structure, which can reduce energy consumption and operating costs and improve system stability and safety while ensuring efficient and rapid freezing.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Embodiment 1:

[0024] This embodiment provides a pressure differential quick freezing cold storage body structure, such as Figure 1 As shown, it includes a cold storage body 1, a refrigeration unit 2 is provided on one side of the top of the cold storage body 1, and a guide top plate 3 is connected to the air outlet side of the refrigeration unit 2. The guide top plate 3 is horizontally fixed to the upper part of the cold storage body 1, and the air flow can flow in the direction restricted by the guide top plate 3 through the guide top plate 3, so that the air flow can flow quickly and regularly, and a storage rack 4 is provided under the guide top plate 3. A return air channel 5 is provided on the side of the cold storage body 1 close to the refrigeration unit 2, and a return air port 6 is provided at the bottom of the return air channel 5. It also includes a control system, which is electrically connected to the refrigeration unit 2.

[0025] As an implementation mode, the inner wall of the cold storage body 1 is paved with a heat-insulating layer, so as to effectively isolate the influence of the external environment on the interior of the cold storage body 1 .

[0026] As an implementation mode, an arc-shaped flow-guiding structure 7 is provided at the inner corner of the cold storage body 1 , which can make the air flow flow more smoothly in the cold storage body 1 .

[0027] As an implementation mode, a guide rail is provided at the bottom of the cold storage body 1, and the guide rail cooperates with the storage rack 4 to facilitate the movement of goods.

[0028] As an implementation mode, the refrigeration unit 2 includes a compressor, a condenser, an expansion valve and an evaporator. A loop is formed between the compressor, the condenser, the expansion valve and the evaporator. There is a refrigerant in the loop. The evaporator is arranged opposite to the air outlet, and a fan is arranged in the air outlet. Among them, the compressor adopts a high-performance scroll compressor to ensure that good working efficiency can be maintained in a low temperature environment; the condenser adopts an air-cooled condenser to facilitate outdoor heat dissipation; the expansion valve adopts an electronic expansion valve to accurately adjust the refrigerant flow rate; the evaporator is a flat-plate evaporator to effectively increase the heat exchange area.

[0029] Specifically, the compressor uses a scroll compressor, model E70-25W, with a rated power of 25kW, which can start normally in an environment of -40℃; the condenser material uses aluminum fin tubes, with fins of 10mm or 8 to 16 fins, and a total surface area of ​​8m 2 , strong adaptability; the expansion valve brand is Danfoss, with an accuracy of ±1% and rapid response; the evaporator dimensions are 600mm×1200mm×30mm in length, width and height, with a total area of ​​14400cm 2 , the material is copper alloy, which has good corrosion resistance; the fan adopts 50000m 3 / h or above low-temperature fan.

[0030] As an implementation method, the control component includes a controller, which is electrically connected to a temperature sensor, a humidity sensor and a refrigeration unit respectively. The temperature sensor and the humidity sensor are arranged in the cold storage body. Among them, the temperature and humidity sensors are selected from the SHT series of the Swiss Sensirion company, which has a wide measurement range and high stability.

[0031] As an implementation mode, a vent is provided on the top of the cold storage body 1 for ventilation.

[0032] As an implementation method, a vertical airflow guiding device is also provided in the cold storage body 1. By introducing the vertical airflow guiding device, the cold air is evenly distributed in the entire cold storage body 1 from top to bottom, thereby accelerating the heat exchange rate on the food surface. It can significantly improve the quick freezing efficiency without significantly increasing the hardware investment. It is particularly suitable for corporate customers who pursue the ultimate freezing speed and are willing to make additional investments.

[0033] The present invention provides a pressure differential quick-freezing cold storage structure, and its operation method and working principle are as follows: turn on the power supply, check whether each electrical component is normal; set the target temperature (generally, it is recommended to set it to -35°C initially), and wait for the system to pre-cool; open the cold storage door, and push the pre-prepared tray loaded with the food to be frozen into the designated position in the storage; close the cold storage door, and observe the actual temperature curve on the display screen to confirm whether it drops as expected; at this time, the control system first detects that the internal temperature is higher than the preset value, and then activates the compressor to extract the low-pressure side gas, which is compressed into a high-temperature and high-pressure state and sent to the condenser, releasing heat in the external air to become liquid; then the liquid enters the expansion valve to reduce pressure and cool down to become a low-temperature and low-pressure mixed flow It enters the evaporator, absorbs heat from the surrounding air and evaporates back to the gas state to complete a cycle. During this process, the surface of the evaporator quickly drops to ultra-low temperature, turning the surrounding air into low-temperature air, and circulates refrigeration and cooling along the path to achieve the purpose of rapid cooling. The entire process is closely monitored by the control system to ensure that all indicators meet the standards; after reaching the predetermined time or temperature, open the cold storage door again to take out the frozen products; clean the inside and outside of the warehouse, and regularly maintain important equipment such as the compressor. It should be noted that a comprehensive inspection of the circuit should be carried out before each use to prevent electric shock accidents; operators must wear cold-proof clothing to avoid frostbite caused by long-term contact with low-temperature objects; regularly clean the frost layer on the evaporator to avoid affecting the heat transfer effect.

[0034] It should be understood that for certain specific application requirements, you can consider replacing different types of compressors, such as screw or piston types, to adapt to a wider range of operating conditions; in addition, you can also choose expansion valves and temperature and humidity sensors of different brands, as long as they meet the same functional requirements, they can be interchangeable.

[0035] The present invention provides a pressure differential quick-freezing cold storage structure, which achieves rapid freezing effect while greatly reducing energy consumption and operation and maintenance costs through the innovative pressure difference principle and efficient heat exchange structure design. By selecting and combining key components such as compressors, condensers, expansion valves, and evaporators, the system can be ensured to operate stably even under extremely low temperature conditions. At the same time, the introduction of an intelligent control system not only improves the convenience of operation, but also provides technical support for subsequent fault diagnosis and remote monitoring.

[0036] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A pressure differential quick freezing cold storage structure, characterized in that: It includes a cold storage body, a refrigeration unit is provided on one side of the top of the cold storage body, a guide top plate is connected to the air outlet side of the refrigeration unit, the guide top plate is horizontally fixed to the upper part of the cold storage body, a storage rack is provided below the guide top plate, a return air aisle is provided on one side of the cold storage body close to the refrigeration unit, a return air outlet is provided at the bottom of the return air aisle, and a control system is also included, and the control system is electrically connected to the refrigeration unit.

2. The pressure differential quick freezing cold storage structure according to claim 1 is characterized in that: The inner wall of the cold storage body is paved with a heat-insulating layer.

3. The storage body structure of the pressure differential quick freezing cold storage according to claim 1 is characterized in that: The inner corners of the cold storage body are provided with arc-shaped flow guide structures.

4. The storage body structure of the pressure differential quick freezing cold storage according to claim 1 is characterized in that: A guide rail is provided at the bottom of the cold storage body, and the guide rail cooperates with the storage rack.

5. The storage body structure of the pressure differential quick freezing cold storage according to claim 1 is characterized in that: The refrigeration unit includes a compressor, a condenser, an expansion valve and an evaporator. A loop is formed among the compressor, the condenser, the expansion valve and the evaporator. A refrigerant is contained in the loop. The evaporator is arranged opposite to an air outlet, and a fan is disposed in the air outlet.

6. The pressure differential quick freezing cold storage structure according to claim 1 is characterized in that: The control component includes a controller, and the controller is electrically connected to a temperature sensor, a humidity sensor and a refrigeration unit respectively. The temperature sensor and the humidity sensor are arranged in the cold storage body.

7. The storage body structure of the pressure differential quick freezing cold storage according to claim 1 is characterized in that: A vent is provided on the top of the cold storage body.

8. The pressure differential quick freezing cold storage structure according to claim 1 is characterized in that: A vertical airflow guiding device is also provided in the cold storage body.

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