Warehousing system

Abstract

The utility model discloses a warehousing system which comprises at least one refrigeration house, at least one refrigeration house, at least one storage device and at least one control device. The positive pressure gas generating device is used for generating positive pressure gas; the gas supply pipeline is connected to the positive pressure gas generating device, and the gas supply pipeline is connected to any one of the at least one cold storage so as to convey positive pressure gas to the storage space of the cold storage; the valve assembly is arranged on the air supply pipeline so as to adjust the flow of the positive pressure air conveyed to the storage space by the air supply pipeline. Positive-pressure gas is provided for the storage space of the refrigeration house through the positive-pressure gas generating device, so that the air pressure in the refrigeration house forms a micro-positive-pressure state relative to the external environment, even if the house door of the refrigeration house is in an open state, hot air in the external environment can be effectively prevented from entering the refrigeration house, heat exchange inside and outside the refrigeration house is reduced, and energy consumption is reduced. Therefore, the cold insulation performance of the refrigeration house is improved, and the article storage reliability and safety of a warehousing system are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of refrigeration storage technology, and in particular to a storage system. Background Art

[0002] During cold storage operation, cooling operations cause the pressure inside the cold storage to drop, forming a negative pressure state relative to the external environment. When the cold storage door is opened, hot air from the outside will quickly rush into the cold storage, which will not only cause significant fluctuations in the temperature inside the cold storage, but also accelerate the frosting process of the cold storage cooling equipment, thus seriously affecting the cooling efficiency.

[0003] Especially during the peak hours of inbound and outbound operations, due to the large turnover of goods and frequent inbound and outbound operations by operators, the cold storage door needs to be opened and closed frequently, allowing a large amount of hot air to enter the warehouse, which may also cause condensation or even frost on the items stored in the cold storage, making the storage safety of the items unable to be guaranteed. Utility Model Content

[0004] The embodiment of the present application discloses a storage system that can reduce condensation or frost inside a cold storage to improve refrigeration efficiency and ensure the safety and quality stability of items stored in the cold storage.

[0005] To achieve the above objectives, the present application discloses a storage system, including:

[0006] at least one cold storage having storage space for storing items;

[0007] Positive pressure gas generating device, the positive pressure gas generating device is used to generate positive pressure gas;

[0008] an air supply pipeline, the air supply pipeline being connected to the positive pressure gas generating device, the air supply pipeline being connected to any one of the at least one cold storage to deliver positive pressure gas to the storage space of the cold storage;

[0009] The valve assembly is arranged on the gas supply pipeline. The valve assembly includes at least one valve body. At least one valve body corresponds to at least one cold storage to adjust the flow rate of positive pressure gas delivered by the gas supply pipeline to the storage space.

[0010] In one possible implementation, the positive pressure gas generating device includes:

[0011] Air compressor, air compressor is used to compress air to compress the air into positive pressure gas;

[0012] The gas storage tank is connected to the air compressor. The gas storage tank is used to store positive pressure gas. The gas storage tank is connected to the gas supply pipeline.

[0013] In one possible implementation, the positive pressure gas generating device further includes:

[0014] Low temperature dryer, the low temperature dryer is connected between the air outlet of the air compressor and the air storage tank. The low temperature dryer is used to cool and dry the positive pressure gas compressed by the air compressor.

[0015] In one possible implementation, the positive pressure gas generating device further includes:

[0016] A pressure sensor is provided in the gas storage tank and is used to obtain the pressure value of the positive pressure gas in the gas storage tank;

[0017] The first control device is connected to the pressure sensor and is used to control the start or stop of the air compressor and the low-temperature dryer according to the pressure value.

[0018] In a possible implementation, the warehousing system further includes:

[0019] The air pressure differential sensor is installed in the cold storage and is used to detect the pressure difference between the storage space and the external environment;

[0020] The second control device is connected to the air pressure difference sensor and the valve assembly, and is used to adjust the opening of the valve assembly according to the pressure difference.

[0021] In a possible implementation, the warehousing system further includes:

[0022] The installation port is set through the warehouse wall of the cold storage, and the air pressure difference sensor is set at the installation port. The air pressure difference sensor includes a first detection port and a second detection port. The first detection port is located in the storage space and the second detection port is located in the external environment.

[0023] In a possible implementation, the warehousing system further includes:

[0024] The sealing isolator is arranged in the installation port, the sealing isolator seals the gap between the air pressure difference sensor and the installation port, and isolates the first detection port from the second detection port.

[0025] In a possible implementation, the cold storage includes a door body, and the installation opening is arranged adjacent to the door body.

[0026] In a possible implementation, the at least one cold storage includes a first cold storage, the valve assembly includes a first valve body, the gas supply pipeline includes a main pipeline and a first pipeline connected to the main pipeline;

[0027] The main pipeline is connected to the gas storage tank; the first pipeline is connected to the first cold storage, and the first valve body is arranged on the first pipeline.

[0028] In one possible implementation, the at least one cold storage includes a second cold storage, the valve assembly includes a second valve body, the gas supply pipeline includes a second pipeline connected to the main pipeline, the second pipeline is connected to the second cold storage, and the second valve body is provided in the second pipeline;

[0029] At least one cold storage includes a third cold storage, the valve assembly includes a third valve body; the gas supply pipeline includes a third pipeline connected to the main pipeline, the third pipeline is connected to the third cold storage, and the third valve body is arranged on the third pipeline;

[0030] At least one cold storage includes a fourth cold storage, the valve assembly includes a fourth valve body; the gas supply pipeline includes a fourth pipeline connected to the main pipeline, the fourth pipeline is connected to the fourth cold storage, and the fourth valve body is arranged on the fourth pipeline.

[0031] In a possible implementation, the first valve body is an electric constant pressure regulating valve.

[0032] Compared with the prior art, the present invention has the following advantages:

[0033] In this way, the storage system provided in the embodiment of the present application provides positive pressure gas to the storage space of the cold storage through a positive pressure gas generating device, so that the air pressure in the cold storage forms a slightly positive pressure state relative to the external environment. In this way, even if the door of the cold storage is in an open state, the entry of hot air from the external environment is effectively suppressed, and the heat exchange inside and outside the cold storage is greatly reduced, thereby improving the cold storage performance of the cold storage and ensuring the reliability and safety of the storage of items in the storage system.

[0034] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 This is one of the structural diagrams of the warehousing system provided in the embodiment of the present application;

[0037] Figure 2 This is the second structural diagram of the warehousing system provided in the embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100-storage system; 10-cold storage; 10a-first cold storage; 10b-second cold storage; 10c-third cold storage; 10d-fourth cold storage; 20-positive pressure gas generating device; 201-air compressor; 202-gas storage tank; 203-low-temperature dryer; 30-valve assembly; 30a-first valve body; 30b-second valve body; 30c-third valve body; 30d-fourth valve body; 40-gas supply pipeline; 401-main pipeline; 402-first pipeline; 403-second pipeline; 404-third pipeline; 405-fourth pipeline; 50-air pressure difference sensor; 60-second control device. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0042] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0043] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0045] During cold storage operation, the pressure inside the cold storage drops due to the lower temperature inside, resulting in a lower pressure than the ambient pressure. When the cold storage door is opened, relatively warmer air from the outside quickly enters, causing significant temperature fluctuations. The entry of warmer air not only accelerates frost formation on the cold storage's cooling equipment but also reduces its refrigeration efficiency. This problem is particularly acute in modern logistics-based cold storage, due to the high turnover of goods and the frequent entry and exit of operators.

[0046] In the related art, condensation or frost in the cold storage is usually reduced by installing an air curtain machine on the storage door, or replacing the storage door with a fast rolling shutter door. Although the above measures can slow down the fluctuation in the cold storage to a certain extent, when operators enter and exit the cold storage in a concentrated manner, the storage door needs to remain open for a long time, which will cause a large amount of hot air from the external environment to enter the cold storage, and the cooling loss in the cold storage will increase sharply.

[0047] Leaving the door open for extended periods can lead to unstable temperature and humidity within the cold storage, further exacerbating the problem of condensation or ice forming on the surface of refrigerated items, or thawing of frozen items. This not only affects the preservation quality of refrigerated or frozen items, but also significantly increases the safety risks of food or medicine if the refrigerated or frozen items are food or medicine.

[0048] Therefore, the embodiment of the present application provides a storage system that can effectively maintain the stability of the environment inside the cold storage, reduce the increase in energy consumption caused by temperature and humidity fluctuations in the cold storage, and at the same time improve the operating efficiency and economic benefits of the cold storage.

[0049] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0050] Please also refer to Figure 1 and Figure 2 , Figure 1 This is one of the system diagrams of the warehousing system 100 provided in an embodiment of the present application. Figure 2The second system diagram of a storage system 100 for storage equipment provided in an embodiment of the present application. The storage system 100 includes: at least one cold storage 10, the cold storage 10 having a storage space for storing items; a positive pressure gas generator 20, the positive pressure gas generator 20 for generating positive pressure gas; a gas supply pipeline 40, the gas supply pipeline 40 connected to the positive pressure gas generator 20, the gas supply pipeline 40 being connected to any one of the at least one cold storage 10 to deliver positive pressure gas to the storage space of the cold storage 10; and a valve assembly 30, disposed on the gas supply pipeline 40, the valve assembly 30 being able to adjust its opening to adjust the flow rate of the positive pressure gas delivered by the gas supply pipeline 40 to the storage space.

[0051] like Figure 1 As shown, there can be multiple cold storages 10. Cold storage 10 is a key component of the storage system 100 and is used to store items that need to be kept in a low-temperature environment. Cold storage 10 has storage space within for items that require refrigeration or freezing. Cold storage 10 includes refrigeration equipment that precisely controls temperature and humidity to ensure the quality and safety of stored items.

[0052] The cold storage 10 can be divided into a freezer and a refrigerator according to storage requirements. The freezer is mainly used to store items that need to be stored in a sub-zero temperature environment, such as frozen food, frozen meat, seafood, etc. The temperature of the freezer is usually set below -18°C, sometimes even lower, to keep the food frozen, prevent bacterial growth, and extend the shelf life of the food. The refrigerator is used to store items that need to be stored in a low-temperature but not freezing environment, such as fruits, vegetables, dairy products, cooked food, etc. The temperature of the refrigerator is usually set between 0 degrees Celsius and 4 degrees Celsius. This temperature range can slow down the metabolism of food and inhibit the growth of microorganisms, thereby extending the shelf life of food.

[0053] The cold storage 10 has a door so that the operator can carry items in and out of the cold storage 10. At this time, the hot air outside the cold storage 10 will enter the cold storage 10, which will cause the temperature and humidity inside the cold storage 10 to fluctuate. This rise in temperature and increase in humidity will prompt the refrigeration equipment in the cold storage 10 to start more frequently to maintain the set low temperature, thereby increasing energy consumption. At the same time, the water vapor in the hot air easily condenses into water droplets when encountering the surface of the colder items in the cold storage 10, forming condensation and even further freezing, thereby seriously affecting the storage quality of the items in the storage. Therefore, the storage system 100 provided in the embodiment of the present application is configured with a positive pressure gas generating device 20 to inject positive pressure gas into the cold storage 10 to ensure that the air pressure inside the cold storage 10 is higher than the external environment air pressure. In this way, the positive pressure formed inside the cold storage 10 acts as a kind of airtight barrier. Even if the door of the refrigerator needs to be opened frequently for transportation, it can effectively suppress the entry of hot air in the external environment, greatly reducing the heat exchange inside and outside the cold storage 10.

[0054] Specifically, the positive pressure gas generating device 20 is used to generate positive pressure gas. The positive pressure gas generating device 20 includes an air compressor 201 and corresponding control components. The air compressor 201 can compress air, causing the air pressure to increase, thereby generating positive pressure gas.

[0055] Positive pressure gas has a pressure greater than atmospheric pressure. At sea level, atmospheric pressure is typically defined as 101.325 kPa (kilopascals). Depending on the actual storage conditions, the positive pressure gas can be maintained at a pressure slightly above atmospheric pressure. Specifically, the pressure of the positive pressure gas can be set between 106 kPa and 120 kPa.

[0056] Since the pressure of the positive pressure gas is greater than the atmospheric pressure of the environment outside the cold storage 10, according to the principle of pressure difference in fluid mechanics, gas always flows from high-pressure areas to low-pressure areas. Therefore, when the door of the cold storage 10 is opened, even if the door of the cold storage 10 is open, since the gas pressure inside the cold storage 10 is higher than the gas pressure of the outside environment, the positive pressure gas inside the cold storage 10 will flow outward, thereby preventing the air in the outside environment from flowing back into the cold storage 10.

[0057] The gas supply line 40 is connected to the positive pressure gas generator 20 and any one of the at least one cold storage 10 to deliver positive pressure gas to the storage space of the cold storage 10. The positive pressure gas generator 20 is connected to each cold storage 10 to ensure that each cold storage 10 maintains a slightly positive pressure when the door is opened, effectively preventing the ingress of hot air and pollutants from the external environment.

[0058] In addition, a set of positive pressure gas generating devices 20 can be provided to allocate and supply multiple cold storages 10 for shared use, thereby reducing the construction cost of the storage system 100.

[0059] like Figure 1 As shown, the valve assembly 30 is disposed on the air supply line 40. The valve assembly 30 includes at least one valve body, and at least one valve body corresponds to at least one cold storage, that is, a valve body is disposed on the air supply line of each cold storage. Each valve body can adjust the opening to precisely control the flow of positive pressure gas entering each cold storage 10. By adjusting the valve assembly 30, it can be ensured that different cold storages 10 receive the appropriate amount of positive pressure gas according to their volume and door opening frequency requirements, thereby maintaining the stability of the air pressure within the cold storage 10.

[0060] Optionally, the valve assembly 30 may include a regulating valve, that is, the valve body may be a regulating valve to adjust the flow rate of the positive pressure gas. For example, at least one cold storage 10 may include a first cold storage 10a and a second cold storage 10b. The first cold storage 10a is larger in size and, due to business needs, has its door opened more frequently. Therefore, more positive pressure gas is required to maintain internal air pressure stability. The second cold storage 10b is smaller in size and has its door opened less frequently, requiring a relatively smaller flow rate of positive pressure gas. The valve assembly 30 is disposed on the air supply line 40. For the first cold storage 10a, the valve body disposed on the air supply line 40 supplying air to the first cold storage 10a is adjusted to a larger opening to increase the flow rate of the positive pressure gas. This ensures that when the door of the first cold storage 10a is frequently opened, hot air and moisture from the external environment do not enter the first cold storage 10a, thereby maintaining stable temperature and humidity within the first cold storage 10a. For the second cold storage 10b, the valve body provided on the gas supply pipeline 40 for supplying gas to the second cold storage 10b will be adjusted to a smaller opening to reduce the flow of the positive pressure gas to meet its lower gas pressure maintenance requirement.

[0061] Optionally, the valve assembly 30 may include a solenoid valve, that is, the valve body may be a solenoid valve to open or close the gas supply line 40. For example, when one of the at least one cold storage 10 is not opened for a long time, the valve body provided on the gas supply line 40 supplying gas to the second cold storage 10b may also be kept in a normally closed state, that is, the flow rate of the positive pressure gas is adjusted to zero, so that the positive pressure gas is adjusted to other cold storages 10 in need.

[0062] It should be noted that, by configuring the positive pressure gas generating device 20, there is no need to spend money to purchase high-cost fast rolling shutter doors or air curtain doors, and ordinary warehouse doors can be used to achieve the effect of preventing hot air from entering.

[0063] In this way, the storage system 100 provided in the embodiment of the present application provides positive pressure gas to the storage space of the cold storage 10 through the positive pressure gas generating device 20, so that the air pressure in the cold storage 10 forms a slightly positive pressure state relative to the external environment. In this way, even if the door of the cold storage 10 is in an open state, the entry of hot air from the external environment is effectively suppressed, and the heat exchange inside and outside the cold storage 10 is greatly reduced, thereby improving the cold preservation performance of the cold storage 10 and ensuring the reliability and safety of the storage of items in the storage system 100.

[0064] In some embodiments, as Figure 1 As shown, the positive pressure gas generating device 20 also includes an air compressor 201 and an air storage tank 202. The air compressor 201 is used to compress air to compress the air into positive pressure gas; the air storage tank 202 is connected to the air compressor 201. The air storage tank 202 is used to store positive pressure gas, and the air storage tank 202 is connected to the air supply pipeline 40.

[0065] The air compressor 201 may be a screw air compressor, a piston air compressor or a scroll air compressor. The air compressor 201 draws in air from the atmosphere, compresses and processes it, and generates high-pressure gas that meets system requirements.

[0066] Gas tank 202 can be made of carbon steel or stainless steel. It features corrosion resistance and high strength, making it suitable for storing positive-pressure gas. Furthermore, gas tank 202 not only stores compressed positive-pressure gas but also ensures a stable gas supply to multiple cold storages 10, reducing the frequent starts and stops of air compressor 201, thereby extending the service life of air compressor 201 and saving energy.

[0067] Optionally, the gas storage tank 202 may be equipped with components such as a pressure gauge and a safety valve to ensure safe storage of the gas storage tank 202 .

[0068] In some embodiments, the positive pressure gas generating device 20 also includes a low-temperature dryer 203, which is connected between the air outlet of the air compressor 201 and the gas storage tank 202. The low-temperature dryer 203 is used to cool and dry the positive pressure gas compressed by the air compressor 201.

[0069] The low-temperature dryer 203 may include a condenser and a refrigerant in the condenser. The low-temperature refrigerant can reduce the temperature of the positive-pressure gas. The low-temperature dryer 203 may also include a separator and a desiccant. The separator is used to separate and remove water vapor condensed in the positive-pressure gas. The desiccant is used to further absorb the remaining water vapor in the positive-pressure gas to ensure that the positive-pressure gas entering the cold storage 10 is dry and low-temperature.

[0070] As air compressor 201 compresses air, the speed of air molecules increases due to the work performed by air compressor 201, causing the air temperature to rise. A low-temperature dryer 203 is positioned between air compressor 201 and air storage tank 202. The refrigerant in low-temperature dryer 203 exchanges heat with the compressed air, thereby cooling it. This makes the compressed air more suitable for entering cold storage 10 and reduces temperature fluctuations within cold storage 10.

[0071] Furthermore, the low-temperature dryer may include a conventional cooling section and a low-temperature treatment section, and the conventional cooling section and the low-temperature treatment section are connected in series. The temperature of the positive-pressure gas after the conventional cooling section can be 10°C-15°C. The temperature of the positive-pressure gas after treatment in the low-temperature treatment section can be further reduced to 2°C-5°C, and the water content in the positive-pressure gas can also be further reduced. The specific cooling range of the low-temperature treatment section can also be set according to the refrigeration demand of the cold storage 10 to reduce the temperature impact of the positive-pressure gas on the cold storage 10.

[0072] It should be noted that whether to use a conventional cooling section or a low-temperature treatment section to cool the positive-pressure gas can be determined according to the storage properties of the cold storage 10 .

[0073] In addition, the temperature of the compressed positive pressure gas will drop when it is subjected to low temperature treatment. If it is cooled to below the dew point temperature, the water vapor in the positive pressure gas will condense into water droplets, resulting in an increase in the relative humidity of the positive pressure gas. The desiccant in the low temperature dryer 203 can absorb the water vapor condensed in the positive pressure gas to reduce the humidity fluctuations in the cold storage 10 after the positive pressure gas enters the cold storage 10. At the same time, the water content of the positive pressure gas is further reduced, which can further reduce the overall water content of the air in the cold storage 10, thereby reducing the frosting cycle in the cold storage 10 and improving the refrigeration efficiency of the cold storage 10 and the safety of the stored items.

[0074] For example, when the number of cold storages 10 is large, the number of air compressors 201 and low-temperature dryers 203 can be increased, such as Figure 1 As shown, two sets of air compressors 201 and low-temperature dryers 203 can be configured in the storage system 100 to supply positive-pressure gas to the four cold storages 10 to ensure the supply of positive-pressure gas.

[0075] In some embodiments, as Figure 1 and Figure 2 As shown, the positive-pressure gas generating device 20 also includes a pressure sensor and a first control device. The pressure sensor is disposed in the gas storage tank 202 and is used to obtain the pressure value of the positive-pressure gas in the gas storage tank 202. The first control device is connected to the pressure sensor and is used to control the start or stop of the air compressor 201 and the low-temperature dryer 203 based on the pressure value.

[0076] The pressure sensor is provided in the gas storage tank 202 , and is used to obtain the pressure value of the positive pressure gas in the gas storage tank 202 .

[0077] The first control device is electrically connected to the pressure sensor. That is, the pressure value obtained by the pressure sensor can be sent to the first control device, and the first control device can control the air compressor 201 and the low-temperature dryer 203 to start or stop according to the pressure value. The first control device is also connected to an external power supply.

[0078] By obtaining the pressure value within gas tank 202 through the first control device and controlling air compressor 201 and low-temperature dryer 203 based on this pressure value, the intelligence and automation level of storage system 100 are enhanced. This ensures that the pressure of the positive-pressure gas stored in gas tank 202 remains stable within a preset safety range, while also effectively preventing energy waste and damage to gas tank 202 during operation caused by excessively high or low pressure.

[0079] For example, when the pressure in gas tank 202 reaches a preset upper limit, the first control device can quickly respond by shutting down air compressor 201 and low-temperature dryer 203 to prevent the pressure in gas tank 202 from continuing to rise. Similarly, when the pressure in gas tank 202 drops to a preset lower limit, the first control device promptly activates air compressor 201 and low-temperature dryer 203 to replenish positive-pressure gas in gas tank 202, ensuring the continued stable operation of storage system 100. Furthermore, automated control reduces the frequency of manual intervention, lowers operational difficulty and labor costs, and improves the operational efficiency and reliability of storage system 100.

[0080] Optionally, the first control device can be a PLC (programmable logic controller). The first control device can process the pressure value from the pressure sensor in real time according to a preset logic program and algorithm. When the pressure sensor detects that the pressure value of the positive pressure gas in the gas tank 202 exceeds a preset safety range or is lower than a preset low pressure range, the first control device will trigger a corresponding control instruction to automatically adjust the working state of the air compressor 201 and the low-temperature dryer 203. For example: when the pressure in the gas tank 202 is too high, the first control device will shut down the air compressor 201 and the low-temperature dryer 203 to prevent the pressure in the gas tank 202 from continuing to rise; and when the pressure in the gas tank 202 is too low, the air compressor 201 and the low-temperature dryer 203 will be started to replenish the positive pressure gas.

[0081] Optionally, the first control device can control the operation of the air compressor 201 and the low-temperature dryer 203 according to a preset program during the low-peak electricity consumption period, so that low-temperature dry positive-pressure gas can be stored in the gas storage tank 202, thereby reducing the operating cost of the entire storage system 100.

[0082] In some embodiments, as Figure 1 and Figure 2As shown, the storage system 100 further includes a pressure differential sensor 50 and a second control device 60. The pressure differential sensor 50 is disposed in the cold storage 10 and is used to detect the pressure difference between the storage space and the external environment. The second control device 60 is connected to the pressure differential sensor 50 and the valve assembly 30 and is used to adjust the opening of the valve assembly 30 according to the pressure differential.

[0083] The air pressure difference sensor 50 can be installed on the wall of the cold storage 10. The air pressure difference sensor 50 can be used to monitor the air pressure difference between the inside of the cold storage 10 and the external environment.

[0084] The second control device 60 is electrically connected to the pressure differential sensor 50 and the valve assembly 30 for communication. The second control device 60 receives the pressure differential value transmitted in real time by the pressure differential sensor 50 and dynamically adjusts the opening of the valve assembly 30 based on the pressure differential. This maintains the air pressure inside the cold storage 10 higher than the ambient air pressure, thereby forming an air seal at the door opening due to the pressure differential, effectively preventing outside air or moisture from entering the cold storage 10. The second control device is also connected to an external power source.

[0085] Specifically, the second control device 60 can also be a PCL controller. The second control device 60 is pre-programmed with a preset pressure difference threshold, and the second control device 60 judges the air pressure difference value received by the air pressure difference sensor 50. When it is detected that the actual pressure difference between the inside and outside of the cold storage 10 is lower than the preset pressure difference threshold, it means that the air sealing effect of the cold storage 10 may be weakened, and outside air or moisture may penetrate. At this time, the second control device 60 will send a corresponding control signal to the valve assembly 30, adjust its opening to increase the air pressure inside the cold storage 10, thereby restoring and maintaining the required pressure difference.

[0086] In this way, the intelligence and automation level of the storage system 100 are further improved. The pressure difference sensor 50 is used to detect the pressure difference between the inside and outside of the cold storage 10, and positive pressure gas is added to the cold storage 10 in a timely manner, thereby ensuring the stability and sealing of the internal pressure of the cold storage 10 and providing a good storage environment for stored items.

[0087] In some embodiments, the storage system 100 further includes an installation port. The installation port is provided through the wall of the cold storage 10, and the air pressure differential sensor 50 is provided at the installation port. The air pressure differential sensor 50 includes a first detection port and a second detection port. The first detection port is located in the storage space, and the second detection port is located in the external environment.

[0088] The air pressure difference sensor 50 includes two detection ports, namely a first detection port and a second detection port. The first detection port is placed inside the storage space of the cold storage 10; the second detection port is placed in the external environment of the cold storage 10.

[0089] In this way, the first detection port can accurately monitor the air pressure inside the cold storage 10 in real time. The second detection port can accurately monitor the air pressure outside the cold storage 10 in real time. Real-time and accurate detection of the air pressure inside and outside the cold storage 10 helps to dynamically adjust the air pressure difference between the inside and outside of the cold storage 10, maintaining a slightly positive pressure state inside the cold storage 10.

[0090] In some embodiments, the storage system 100 further includes: a sealing isolator, which is disposed in the installation port, and the sealing isolator seals the gap between the air pressure difference sensor 50 and the installation port, and isolates the first detection port and the second detection port.

[0091] The sealing isolator is placed in the installation opening to isolate the first detection port from the second detection port, thereby effectively improving the detection accuracy and reliability of the air pressure difference sensor 50.

[0092] In addition, the sealing isolation ensures that the gap between the pressure difference sensor 50 and the installation port is closed, which not only prevents impurities and moisture in the external environment from entering the cold storage 10 through the gap, but also avoids the cold air inside the cold storage 10 from leaking to the outside, thereby maintaining the stability of the internal environment of the cold storage 10.

[0093] In some embodiments, the cold storage 10 includes a door body, and the mounting opening is disposed adjacent to the door body.

[0094] The mounting opening is located close to the door, and the pressure differential sensor 50 can detect changes in the air pressure inside and outside the cold storage 10 in real time when the door is open. This allows the second control device 60 to promptly adjust the supply of positive pressure gas based on the pressure differential, restoring and maintaining the slightly positive pressure state inside the cold storage 10. This effectively prevents the ingress of hot air and moisture from entering the cold storage 10, even when the door is frequently opened and closed, reducing fluctuations in temperature and humidity inside the cold storage 10.

[0095] In some embodiments, as Figure 1 As shown, at least one cold storage 10 may include a first cold storage 10a. The gas supply pipeline 40 includes a main pipeline 401 and a first pipeline 402 connected to the main pipeline 401. The first pipeline 402 is connected to the first cold storage 10a, and the main pipeline 401 is connected to the gas storage tank 202.

[0096] For example, Figure 1 As shown, at least one cold storage 10 may further include a second cold storage 10b, a third cold storage 10c and a fourth cold storage 10d, and the gas supply pipeline 40 may further include a second pipeline 403, a third pipeline 404 and a fourth pipeline 405. The second pipeline 403, the third pipeline 404 and the fourth pipeline 405 are respectively connected to the main pipeline 401 to supply gas to the second cold storage 10b, the third cold storage 10c and the fourth cold storage 10d.

[0097] like Figure 1 As shown, the valve assembly 30 may include a first valve body 30a, which is disposed on the first pipeline 402. The first valve body 30a is electrically connected to the second control device 60 to adjust the amount of positive pressure gas injected by the gas storage tank 202 into the first cold storage 10a.

[0098] When the storage system 100 includes a plurality of cold storages 10 , the plurality of cold storages 10 may be connected in parallel to the gas storage tank 202 .

[0099] For example, Figure 1 As shown, the valve assembly 30 may further include a second valve body 30b, which is disposed on the second pipeline 403. The second valve body 30b is electrically connected to the second control device 60 to adjust the amount of positive pressure gas injected by the gas tank 202 into the second cold storage 10b. The valve assembly 30 may further include a third valve body 30c, which is disposed on the third pipeline 404. The third valve body 30c is electrically connected to the second control device 60 to adjust the amount of positive pressure gas injected by the gas tank 202 into the first cold storage 10a. The valve assembly 30 may further include a fourth valve body 30d, which is disposed on the fourth pipeline 405. The fourth valve body 30d is electrically connected to the second control device 60 to adjust the amount of positive pressure gas injected by the gas tank 202 into the second cold storage 10b. The second valve body 30b, the third valve body 30c and the fourth valve body 30d can respectively adjust the amount of positive pressure gas injected by the gas storage tank 202 into the second cold storage 10b, the third cold storage 10c and the fourth cold storage 10d.

[0100] In some embodiments, the first valve body 30a is an electric constant pressure regulating valve. This valve precisely controls the flow of positive pressure gas, ensuring that a stable, slightly positive pressure is maintained within the cold storage 10. This precise control effectively reduces temperature and humidity fluctuations within the cold storage 10 caused by air pressure fluctuations, thereby improving the quality and safety of refrigerated items.

[0101] The second valve body 30b, the third valve body 30c and the fourth valve body 30d may also be electric constant pressure regulating valves.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A warehousing system, characterized in that: include: at least one cold storage having a storage space for storing items; A positive-pressure gas generating device, wherein the positive-pressure gas generating device is used to generate positive-pressure gas; an air supply pipeline, the air supply pipeline being connected to the positive pressure gas generating device, the air supply pipeline being connected to any one of the at least one cold storage to deliver positive pressure gas to the storage space of the cold storage; A valve assembly is provided on the gas supply pipeline, and the valve assembly includes at least one valve body, and the at least one valve body corresponds one-to-one to the at least one cold storage. The valve assembly is used to adjust the flow rate of positive pressure gas delivered by the gas supply pipeline to the storage space.

2. The storage system according to claim 1, characterized in that: The positive pressure gas generating device comprises: An air compressor, wherein the air compressor is used to compress air to compress the air into positive pressure gas; An air storage tank is connected to the air compressor, and is used to store the positive pressure gas. The air storage tank is connected to the air supply pipeline.

3. The storage system according to claim 2, characterized in that: The positive pressure gas generating device further comprises: A low-temperature dryer is connected between the air outlet of the air compressor and the air storage tank, and is used to cool and dry the positive-pressure gas compressed by the air compressor.

4. The storage system according to claim 3, characterized in that: The positive pressure gas generating device further comprises: A pressure sensor is provided in the gas storage tank, and is used to obtain the pressure value of the positive pressure gas in the gas storage tank; A first control device is connected to the pressure sensor, and is used to control the start or stop of the air compressor and the low-temperature dryer according to the pressure value.

5. The storage system according to claim 2, characterized in that: The storage system further includes: An air pressure difference sensor is provided in the cold storage, and is used to detect the pressure difference between the storage space and the external environment; A second control device is connected to the air pressure difference sensor and the valve assembly, and is used to adjust the opening of the valve assembly according to the pressure difference.

6. The storage system according to claim 5, characterized in that: The storage system further includes: The installation port is set through the warehouse wall of the cold storage, and the air pressure difference sensor is set at the installation port. The air pressure difference sensor includes a first detection port and a second detection port. The first detection port is located in the storage space, and the second detection port is located in the external environment.

7. The storage system according to claim 6, characterized in that: The storage system further includes: A sealing isolator is disposed in the installation port, the sealing isolator seals the gap between the air pressure difference sensor and the installation port, and isolates the first detection port from the second detection port.

8. The storage system according to any one of claims 2 to 7, characterized in that: The at least one cold storage includes a first cold storage, the valve assembly includes a first valve body; the gas supply pipeline includes a main pipeline and a first pipeline connected to the main pipeline; The main pipeline is connected to the gas storage tank; the first pipeline is connected to the first cold storage; and the first valve body is arranged on the first pipeline.

9. The storage system according to claim 8, characterized in that: The at least one cold storage includes a second cold storage, the valve assembly includes a second valve body; the gas supply pipeline includes a second pipeline connected to the main pipeline, the second pipeline is connected to the second cold storage, and the second valve body is provided in the second pipeline; The at least one cold storage includes a third cold storage, the valve assembly includes a third valve body; the gas supply pipeline includes a third pipeline connected to the main pipeline, the third pipeline is connected to the third cold storage, and the third valve body is provided on the third pipeline; The at least one cold storage includes a fourth cold storage, the valve assembly includes a fourth valve body; the gas supply pipeline includes a fourth pipeline connected to the main pipeline, the fourth pipeline is connected to the fourth cold storage, and the fourth valve body is arranged on the fourth pipeline.

10. The storage system according to claim 9, characterized in that: The first valve body is an electric constant pressure regulating valve.

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