Multi-temperature-zone penetrating chamber of cold storage

Abstract

The multi-temperature-zone penetrating hall comprises a returning room and a penetrating hall which are sequentially connected with a refrigeration room, a sorting room and a pressure equalizing system are arranged in the penetrating hall, the pressure equalizing system comprises a refrigeration unit, a first pressure equalizing unit and a second pressure equalizing unit, an air return pipe is connected to an air inlet of the refrigeration unit, and an air supply pipe is arranged at an air outlet of the refrigeration unit; the first pressure equalizing unit comprises an air supply duct and a pressure equalizing bag, and the air supply duct is connected with the air supply pipe; an air return duct on the side wall of the sorting room is connected with an air inlet of the refrigeration unit through an air return pipe. According to the method, the sorting room is additionally arranged in the penetrating room, the temperature of the sorting room is controlled to be-5 DEG C to-10 DEG C, the temperature of the penetrating room outside the sorting room is controlled to be 5 DEG C to 10 DEG C, and the temperature difference between the sorting room and the penetrating room is controlled to be about 15 DEG C, so that the flexibility of the penetrating room is improved; the first pressure equalizing unit and the second pressure equalizing unit are mounted in the sorting room, so that cold air is uniformly distributed in the sorting room, air flow is more uniform and stable, the condition of dry loss of frozen products during sorting operation is avoided, and the quality of the frozen products is ensured.

Description

Technical Field

[0001] The invention relates to a cold storage hallway, in particular to a cold storage hallway with multiple temperature zones. Background Art

[0002] With the expansion of the scale of cold chain logistics, higher requirements are placed on the efficiency and speed of cold chain cargo transportation. As the main channel for goods to enter and exit the cold storage, the hallway needs to be designed with reasonable functional areas, insulation methods and logistics routes to meet the requirements of relevant specifications and reduce the heat exchange between different temperature zones. At the same time, it is also necessary to ensure that the goods can quickly and accurately complete sorting, packaging, transportation, return and other functions. The hallway of the existing cold storage cannot adapt to the different operating functions and the different temperature requirements of goods, and has low flexibility. In addition, as the core area for vehicle parking and cargo loading and unloading in cold chain logistics, the configuration of the number of parking spaces in the hallway directly affects the overall operational efficiency. Especially during business peaks, if there are insufficient parking spaces, it will lead to vehicle congestion and waiting, which will slow down the speed of goods entering and exiting, affecting the smooth operation of the entire cold chain logistics chain. Summary of the invention

[0003] In view of this, the present invention proposes a multi-temperature zone hall of a cold storage, wherein the hall has at least two temperature zones, which can meet different outbound requirements of different frozen products.

[0004] To achieve the above object, the present invention adopts the following technical solutions: The multi-temperature zone hall of the cold storage of the present invention comprises a cage return room connected in sequence with the cold storage room, the hall further comprises a sorting room arranged in the hall and a pressure equalizing system connected with the sorting room, the pressure equalizing system comprises a refrigeration unit above the top insulation layer of the cold storage, a first pressure equalizing unit and a second pressure equalizing unit, the air inlet of the refrigeration unit is connected with a return air duct, and the air outlet thereof is provided with an air supply duct; The first pressure equalizing unit includes an air supply duct arranged at the top of the sorting room and a plurality of pressure equalizing bags arranged on the bottom wall of the air supply duct, and the air supply duct is connected to the air supply pipe; the second pressure equalizing unit is located below the pressure equalizing bag and includes a horizontally arranged air permeable layer; The pressure equalization system also includes a return air duct arranged on the side wall of the sorting room, the lower part of the return air duct has a return air port, and the upper part of the return air duct is connected to the air inlet of the refrigeration unit through a return air pipe.

[0005] The beneficial effects are as follows: the present invention adds a sorting room in the hall, the temperature of the sorting room is controlled at -5°C to -10°C, the temperature of the hall outside the sorting room is controlled at 5°C to 10°C, and the temperature difference between the two is controlled at about 15°C, thereby meeting the outbound delivery requirements of different frozen products and improving the flexibility of the hall; in addition, the sorting room of the present invention is equipped with a first pressure equalizing unit and a second pressure equalizing unit, so that the cold air is evenly distributed in the sorting room, making the air flow in the sorting room more uniform and stable, thereby avoiding the dry consumption of frozen products during sorting operations, thereby ensuring the quality of the frozen products.

[0006] Preferably, the partition wall between the cold storage room and the hallway is a double-layer structure, thereby avoiding heat exchange between the cold storage room and the hallway and ensuring that the temperatures of each are within the designed range; a plurality of the cage rooms are arranged between the cold storage room and the hallway, and the cage rooms are surrounded by partition walls, a surrounding wall arranged in the cold storage room and a top insulation structure, and the temperature of the cage rooms can be controlled within -5°C to 0°C, which is convenient for warehousing and unloading; a lifting first insulation door is correspondingly arranged on the surrounding wall and partition wall of each cage room, and the outer first insulation door is in a closed state when unloading, and the inner first insulation door is closed after the frozen product completely enters the cage room, and the outer second insulation door is immediately closed after the frozen product completely enters the hallway, so as to minimize the heat exchange between the cold storage room and the hallway; an insulation layer is arranged under the concrete floor of the cage room to further ensure the insulation performance of the in-and-out storage area.

[0007] Preferably, a plurality of loading and unloading stations are arranged at intervals on the outer side of the right side wall of the hall; an entrance and exit structure cooperating with the loading and unloading stations is arranged at intervals on the right side wall of the hall, which includes an inner insulation door and an outer insulation door arranged at intervals on the left and right, the outer insulation door is a lifting door, and the inner insulation door is a rolling door; an outer insulation chamber corresponding to the loading and unloading stations and a door seal connected to the outer insulation chamber are arranged on the outer side of the hall, and a loading and unloading platform (preferably a hydraulic lifting platform to facilitate the loading and unloading of goods) is arranged in the outer insulation chamber. The beneficial effect is that the present invention maximizes the arrangement of multiple loading and unloading stations on the right side of the hall, and each loading and unloading station can park a cold chain transport vehicle, thereby improving the efficiency of entering and leaving the cold storage. Each loading and unloading station corresponds to an outer insulation door and the outer insulation door is located in the outer insulation chamber, so that the tail of the cold chain transport vehicle enters the outer insulation chamber through the door seal, minimizing the heat exchange between the frozen products and the external environment during the entry and exit process.

[0008] Preferably, a lower frame is provided below the pressure equalizing bag, the transverse edge of the air permeable layer is placed on the crossbeam of the lower frame, and the longitudinal edge of the air permeable layer is pressed into the limit grooves on the left and right sides of the horizontal frame through a steel pipe. During actual installation, the air permeable layer can be made of breathable non-woven fabric.

[0009] Preferably, the inlet on the left wall and the outlet on the right wall of the sorting room are staggered, and the inlet and the outlet are both provided with a second heat-insulating door. The outside of each side wall of the sorting room is provided with a first heat-insulating layer. The beneficial effect is that the inlet and the outlet of the sorting room are staggered to avoid air convection, minimize the heat exchange between the sorting room and the outer hall during the door opening period, and reduce the loss of cooling capacity.

[0010] Preferably, the outlet of the refrigeration unit is within 0.5 m / s after being pressure-equalized by the first pressure-equalizing unit and the second pressure-equalizing unit. In actual operation, the air flow speed in the sorting room is preferably controlled at 0.3 m / s or less, and the dry loss of frozen products is avoided as much as possible while ensuring the cooling demand.

[0011] Preferably, the refrigeration unit includes an insulation box arranged on the top wall of the sorting room and a circulation fan and a refrigeration coil arranged in the insulation box. The refrigeration coil is arranged on the air supply duct, and the return air duct is connected to the return air outlet of the circulation fan.

[0012] Compared with the prior art, the present invention adds a sorting room in the hall, the temperature of the sorting room is controlled at -5°C to -10°C, the temperature of the hall outside the sorting room is controlled at 5°C to 10°C, and the temperature difference between the two is controlled at about 15°C, thereby meeting the outbound delivery requirements of different frozen products and improving the flexibility of the hall; in addition, the sorting room of the present invention is equipped with a first pressure equalizing unit and a second pressure equalizing unit, so that the cold air is evenly distributed in the sorting room, making the air flow in the sorting room more uniform and stable, thereby avoiding the dry consumption of frozen products during sorting operations and ensuring the quality of frozen products. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 An enlarged view of the cage at point B in the middle.

[0015] Figure 3 yes Figure 2 Schematic diagram of the elevation of the middle cage room.

[0016] Figure 4 It is a schematic elevation view of the hallway and loading and unloading stations described in the present invention.

[0017] Figure 5 Schematic diagram of the sorting room of the present invention.

[0018] Figure 6 yes Figure 5 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0019] The following is a detailed description of an embodiment of the present invention in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment. It should be pointed out that in the present invention Figure 1 The left and right directions are the directions for entering and exiting the warehouse, with the direction from right to left being the direction for entering the warehouse and the direction from left to right being the direction for exiting the warehouse.

[0020] It should be noted that, in the description of the present invention, relational terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0021] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figure 1-3As shown, the present invention proposes a multi-temperature zone hallway in a cold storage, including a cold storage room 1 (two are shown in the figure), a cage room 2 and a hallway 3 (the hallway 3 and the cold storage room 1 have a one-to-one correspondence) from the cold storage room 1 (the temperature is between -18°C and -23°C) to the right, and a partition wall 4 between the cold storage room 1 and the hallway 3 (a polyurethane insulation layer is arranged on each wall surface of the partition wall 4) is a hollow double-layer structure to avoid heat exchange between the cold storage room 1 and the hallway 3, ensuring that the respective temperatures are within the design range; there are multiple cage rooms 2 between each cold storage room 1 and the hallway 3 (the temperature of the cage rooms 2 is controlled at -5°C to 0°C), and the cage rooms 2 are surrounded by the partition wall 4, a wall 5 arranged in the cold storage room 1 and a top insulation structure 6, and each cage room 2 has a first insulation door 7 arranged opposite to each other. When it is necessary to leave the warehouse, the first insulation door 7 on the outside is in a closed state, and the first insulation door 7 on the inside is opened to separate the cold storage room 1 from the hallway 3; when the frozen products completely enter the return cage room 2, the first insulation door 7 on the inside is closed, and the first insulation door 7 on the outside is opened to separate the cold storage room 1 from the hallway 3 to reduce heat loss; an insulation layer (such as a polyurethane insulation layer) is laid under the concrete floor under the return cage room 2, and an insulation layer can also be laid under the concrete floors of the cold storage room 1 and the hallway 3 to reduce the heat exchange between the bottom of the cold storage and the outside. In order to facilitate the storage and exit of frozen products, a first conveying mechanism 8 can be set in each return cage room 2, and a second conveying mechanism 9 connected to the first conveying mechanism 8 can be set in the cold storage room 1 and the hallway 3, and the conveying mechanism can be used to achieve rapid storage and exit. In actual installation, the first conveying mechanism 8 and the second conveying mechanism 9 use wide conveyor belts or conveying platforms.

[0023] Combination Figure 1 It can be seen that a sorting room 10 is arranged in each hallway 3, the hallway 3 area located on the left side of the sorting room 10 can be used as an entry and exit area (can also serve as a buffer zone), and the hallway 3 area located on the right side of the sorting room 10 can be used as a tally area; the hallway 3 area located on the front and / or rear side of the sorting room 10 is used as a logistics channel to provide convenience for entry and exit; the sorting room 10 is surrounded by rock wool sandwich panels, and the outside of each side wall includes a polyurethane insulation layer to reduce the heat exchange inside and outside the sorting room 10; the left side wall of the sorting room 10 has an entrance 11, and the right side wall has an exit 12, and second insulation doors are arranged at the entrance and exit, and the entrance and exit are staggered. When the two second insulation doors are opened, air convection can be avoided as much as possible, thereby reducing the heat exchange between the sorting room 10 and the outer hallway 3 during the door opening period, and reducing the cold loss of the sorting room 10; Combination Figure 5-6It can be seen that the present invention also includes a pressure equalizing system connected to the sorting room 10, the pressure equalizing system includes a refrigeration unit 13 above the top insulation layer of the cold storage, a first pressure equalizing unit and a second pressure equalizing unit, the air inlet of the refrigeration unit 13 is connected to a return air duct 14, and the air outlet thereof is provided with an air supply duct 15; the first pressure equalizing unit includes an air supply duct 16 (or also at the top of the sorting room 10) arranged at the top of the sorting room 10 and a plurality of pressure equalizing bags 17 arranged on the bottom wall of the air supply duct 16, and the air supply duct 16 is connected to the air supply duct 15; The second pressure equalizing unit is located below the pressure equalizing bag 17, and includes a horizontally arranged air permeable layer F1, which can perform secondary pressure equalization on the cold air to make the cold air flow entering the return cage room 2 more uniform and stable; the pressure equalizing system also includes a return air duct 18 arranged on the side wall of the sorting room 10, and the lower part of the return air duct 18 has a return air port, and the upper part of the return air duct 18 is connected to the air inlet of the refrigeration unit 13 through a return air pipe.

[0024] When working, the refrigeration unit 13 sends cold air into the air supply duct 16 through the air supply pipe, and performs pressure equalization once through the pressure equalization bag 17, and then performs pressure equalization twice through the air permeable layer F1, so that the air flow velocity entering the sorting room 10 is within 0.5m / s. On the basis of ensuring that the temperature in the sorting room 10 is controlled at -5℃~-10℃, the air flow in the sorting room 10 is refined as much as possible to avoid dry loss during the frozen product sorting process due to excessive flow rate, so as to ensure the quality of the frozen products. When leaving the warehouse, for frozen products that need to be split into pieces, the frozen products can be sent to the sorting room 10 for splitting, and then sent out of the hall 3 for loading. The sorting room 10 provides a sufficiently low temperature for the splitting of frozen products, reducing the impact of temperature on the frozen products.

[0025] During actual installation, the present invention is provided with an upper frame F2 at the upper part of the sorting room 10, and the upper part of the pressure equalizing bag 17 can be fixed on the upper frame F2 to ensure the fixing effect of the pressure equalizing bag 17; a lower frame F3 is provided below the pressure equalizing bag 17, and the horizontal edge of the air permeable layer F1 (non-woven fabric can be selected) is laid on the crossbeam of the lower frame, and the longitudinal edge of the air permeable layer F1 is pressed into the limit grooves on the left and right sides of the horizontal frame through the steel pipe F4.

[0026] During actual installation, the refrigeration unit 13 includes an insulated box, a circulating fan and a fan coil arranged in the insulated box. The air outlet of the circulating fan is connected to the fan coil, and enters the supply air duct in the sorting room through the fan coil. The return air duct is connected to the return air outlet of the circulating fan through the return air duct.

[0027] Combination Figure 1 and 4It can be seen that a plurality of neatly arranged loading and unloading stations are arranged at intervals on the outer side of the hall 3, and each loading and unloading station can park a cold chain transport vehicle, thereby improving the efficiency of entering and leaving the cold storage; an entrance and exit structure matching each loading and unloading station is arranged at intervals on the right side wall of the hall 3, which includes an inner insulation door 19 and an outer insulation door 20 arranged at intervals on the left and right, the outer insulation door 20 is a lifting door, and the inner insulation door 19 is a rolling door (preferably an electric fast rolling door). When loading and unloading goods, in order to facilitate loading and unloading of goods, the outer insulation door 20 is in an open state, and the height of the inner insulation door 19 can be adjusted. The opening height of the inner insulation door 19 can be adjusted according to the height of the frozen products, so as to minimize the heat exchange during the loading and unloading process and reduce the cold loss inside the hall 3; the outer side of the hall 3 is provided with an outer insulation chamber 21 corresponding to the loading and unloading stations and a door seal 22 connected to the outer insulation chamber, and a loading and unloading platform 23 is provided in the outer insulation chamber 21, so that the rear end of the cold chain transport vehicle enters the outer insulation chamber 21 through the door seal 22, so as to minimize the heat exchange between the frozen products and the external environment during the process of entering and leaving the warehouse; the loading and unloading platform 23 is selected from a hydraulic lifting platform.

[0028] During the actual installation, a fire evacuation insulation door 24 and a fire window 25 are respectively arranged on the front side wall of the cold storage corresponding to the hallway 3 and the rear side wall of the cold storage; a forklift ramp 26 is constructed on the outer side of the front side wall of the cold storage, and a pair of forklift in and out insulation doors 27 are arranged on the front side wall of the cold storage corresponding to the forklift ramp 26 to facilitate forklift in and out. Figure 1 ; The supporting rooms 28 are arranged in the hallway 3 at the rear, including a weak current room, a maintenance room, a dressing room, an office, a forklift charging room (the room is equipped with a lifting insulation door to facilitate the forklift to enter and exit), etc. The supporting rooms are separated from the hallway 3 by an insulation layer, and the area corresponding to the supporting rooms is a normal temperature area, see Figure 1 .

[0029] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-temperature zone hall in a cold storage, comprising a cage return room and a hall connected in sequence with a cold storage room, characterized in that: It also includes a sorting room arranged in the hall and a pressure equalizing system connected to the sorting room, the pressure equalizing system includes a refrigeration unit above the top insulation layer of the cold storage, a first pressure equalizing unit and a second pressure equalizing unit, the air inlet of the refrigeration unit is connected to a return air duct, and the air outlet thereof is provided with an air supply duct; The first pressure equalizing unit includes an air supply duct arranged at the top of the sorting room and a plurality of pressure equalizing bags arranged on the bottom wall of the air supply duct, and the air supply duct is connected to the air supply pipe; the second pressure equalizing unit is located below the pressure equalizing bag and includes a horizontally arranged air permeable layer; The pressure equalization system also includes a return air duct arranged on the side wall of the sorting room, the lower part of the return air duct has a return air port, and the upper part of the return air duct is connected to the air inlet of the refrigeration unit through a return air pipe.

2. The multi-temperature zone hall of cold storage according to claim 1 is characterized in that: The partition wall between the cold storage room and the hall is a double-layer structure, and a plurality of the cage rooms are arranged between the cold storage room and the hall. The cage rooms are surrounded by the partition wall, the surrounding wall arranged in the cold storage room and the top insulation structure, and the surrounding wall and the partition wall of each cage room are correspondingly provided with a lifting first insulation door; An insulation layer is set under the concrete floor of the cage room.

3. The multi-temperature zone hall of cold storage according to claim 1 is characterized in that: A plurality of loading and unloading stations are arranged at intervals on the outer side of the right side wall of the hall, and entrance and exit structures matching the loading and unloading stations are arranged at intervals on the right side wall of the hall, which include inner insulation doors and outer insulation doors arranged at intervals on the left and right, the outer insulation door is a lifting door, and the inner insulation door is a rolling door; an outer insulation chamber and a door seal corresponding to the loading and unloading stations are arranged on the outer side of the right side wall of the hall, and a loading and unloading platform is arranged in the outer insulation chamber.

4. The multi-temperature zone hall of cold storage according to claim 1 is characterized in that: A lower frame is arranged below the pressure equalizing bag, the transverse edge of the air permeable layer is laid on the crossbeam of the lower frame, and the longitudinal edge of the air permeable layer is pressed into the limiting grooves on the left and right sides of the horizontal frame through steel pipes.

5. The multi-temperature zone hall of cold storage according to claim 4 is characterized in that: The entrance on the left wall and the exit on the right wall of the sorting room are staggered, and the entrance and the exit are both provided with second heat-insulating doors. The outside of each side wall of the sorting room is provided with a first heat-insulating layer.

6. The multi-temperature zone hall of cold storage according to claim 4 is characterized in that: The outlet of the refrigeration unit is within 0.5 m / s after being pressure-equalized by the first pressure-equalizing unit and the second pressure-equalizing unit.

7. The multi-temperature zone hall of cold storage according to claim 1 is characterized in that: The refrigeration unit includes an insulation box arranged on the top wall of the sorting room, a circulation fan and a refrigeration coil arranged in the insulation box, the refrigeration coil is arranged on the air supply duct, and the return air duct is connected to the return air port of the circulation fan.

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