An automatic anti-icing system and its control method

Abstract

The full-automatic anti-icing system of the present invention includes a cold storage, an air compressor, a filter, a first air tank, a dryer, a control valve, and a control device. The air compressor, the filter, the first air tank, the dryer, the control valve, and the control device are all arranged outside the cold storage. The air compressor is connected to the filter, the filter is connected to the air inlet of the first air tank, the air outlet of the first air tank is connected to the dryer. The first air tank is used for storing compressed air. A second air tank is arranged inside the cold storage, and the second air tank is used for storing low-temperature dry compressed air. The dryer is connected to the second air tank through the control valve; the control device is connected to the control valve, and the control valve is used for controlling the first air tank to output dry compressed air to the second air tank. This system can automatically release low-temperature clean compressed air, keep the internal pressure of the cold storage stable, prevent the outside air of the cold storage from entering the cold storage, so as to prevent the occurrence of icing phenomena.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and particularly to a fully automatic anti-icing system and its control method. Background Art

[0002] A fully automatic blood refrigeration system is an intelligent blood cryogenic refrigeration system that can achieve automatic access and inventory of blood products at ultra-low temperatures, and intelligent temperature monitoring, providing a strong guarantee for the safe storage of blood.

[0003] Currently, in the field of low-temperature intelligent storage systems, blood samples generally enter and exit through the cold storage transfer hatch. Since the temperature inside the cold storage is relatively low and the air pressure is lower than the external environment, when the hatch is opened, the pressure difference between the inside and outside will cause external air to enter the cold storage, resulting in the pre-cooling of moisture in the air and icing at the hatch, affecting both the opening and closing of the hatch, making it impossible to open or close it properly, affecting the normal use of the cold storage, the normal operation of the hatch, and the user experience.

[0004] In the field of low-temperature intelligent storage systems, a maintenance hatch is generally provided to facilitate maintenance personnel to enter the cold storage for maintenance. Due to the pressure difference between the inside and outside of the cold storage and the gap between the maintenance hatch and the storage body, external air enters the joint between the hatch and the storage body, and the external air condenses upon encountering cold, resulting in icing. Over time, it will be difficult to open the maintenance hatch, affecting its normal use.

[0005] In the field of low-temperature intelligent storage system technology, a wind curtain is often set at the cold storage hatch to block external air from entering the cold storage. However, the wind curtain allows some air to enter the cold storage, bringing in water vapor, which freezes when encountering cold, and the problem of icing cannot be solved. Moreover, the entry of external air into the cold storage causes the temperature inside the cold storage to be unstable, and the refrigeration system needs to be frequently started to supplement cold air, affecting the service life of the refrigeration system. Therefore, in view of the above situation, it is necessary to conduct research and improvement on the low-temperature intelligent storage system. Summary of the Invention

[0006] Based on this, it is necessary to provide a fully automatic anti-icing system that can automatically release low-temperature clean compressed air to keep the pressure inside the cold storage stable, prevent external air from entering the cold storage, and prevent icing.

[0007] To achieve the above object, the present invention provides a fully automatic anti-icing system, adopting the following technical solutions:

[0008] A fully automatic anti-icing system, characterized in that it includes a cold storage, an air compressor, a filter, a first air tank, a dryer, a control valve, and a control device.

[0009] The air compressor, filter, first air tank, dryer, control valve, and control device are all arranged outside the cold storage. The air compressor is connected to the filter, the filter is connected to the air inlet of the first air tank, the air outlet of the first air tank is connected to the dryer. The first air tank is used for storing compressed air. A second air tank is arranged inside the cold storage, and the second air tank is used for storing low-temperature dry compressed air. The dryer is connected to the second air tank through the control valve;

[0010] The control device is connected to the control valve, and the control valve is used for controlling the first air tank to output dry compressed air to the second air tank.

[0011] Furthermore, the air compressor has a pressure detection component capable of detecting the pressure of the first air tank in real time.

[0012] When the pressure detection component detects that the pressure of the first air tank is less than the lower limit of the first set value, the air compressor starts and compresses air to supplement it into the first air tank;

[0013] When the pressure detection component detects that the pressure in the first air tank is greater than the upper limit of the first set value, the air compressor stops working.

[0014] Furthermore, the filter is selected from one or more of a metal mesh filter, an activated carbon filter, or a nylon mesh filter, and is used for filtering compressed air.

[0015] Furthermore, a solenoid valve is arranged inside the cold storage. The solenoid valve is respectively connected to the control device and the second air tank, and the solenoid valve is used for controlling the second air tank to release low-temperature dry compressed air.

[0016] Furthermore, the fully automatic anti-icing system further includes a differential pressure sensor. The differential pressure sensor is arranged outside the cold storage and is connected to the control device and the cold storage, and is used for detecting the pressure difference between inside and outside the cold storage.

[0017] When the differential pressure sensor detects that the pressure difference between outside and inside the cold storage is greater than the second set value, the control device controls the solenoid valve to open, and the second air tank releases low-temperature dry compressed air into the cold storage;

[0018] When the differential pressure sensor detects that the pressure difference between outside and inside the cold storage is not greater than the second set value, the control device controls the solenoid valve to close.

[0019] Furthermore, the cold storage is provided with a sample transfer hatch and a maintenance door. The sample transfer hatch and the maintenance door are respectively connected to the control device.

[0020] When the control device obtains the opening instruction of the sample transfer hatch or the maintenance door, the control device controls the solenoid valve to open, and the second gas cylinder releases low-temperature dry compressed air into the cold storage.

[0021] Further, the full-automatic anti-icing system further includes a pressure sensor, which is arranged inside the cold storage and is respectively connected to the control device and the second gas cylinder. The pressure sensor is used to monitor the gas pressure in the second gas cylinder.

[0022] When the lower limit of the gas pressure in the second gas cylinder is less than the third set value, the control device controls the control valve to open, so that the air in the first gas cylinder is supplemented into the second gas cylinder.

[0023] When the upper limit of the gas pressure in the second gas cylinder reaches the third set value, the control device controls the control valve to close.

[0024] Further, the full-automatic anti-icing system further includes a heating device and a drainage device. The heating device is arranged on the outer periphery of the second gas cylinder and is connected to the control device, the second gas cylinder and the drainage device, and is used to heat the second gas cylinder and the drainage device.

[0025] The drainage device is arranged outside the heating device and is connected to the control device, the heating device and the second gas cylinder, and is used to receive the water generated when the heating device heats the second gas cylinder and discharge the received water out of the cold storage.

[0026] Further, a plurality of second gas cylinders are provided, and each second gas cylinder is provided with a solenoid valve for separate control. The second gas cylinders are connected by pipelines, and pressure sensors are arranged on the pipelines. A set of heating device and drainage device are arranged on the outer periphery of each second gas cylinder.

[0027] The present invention also provides a control method for a full-automatic anti-icing system, which is characterized in that the above full-automatic anti-icing system is adopted, and specifically includes the following steps:

[0028] S210: The differential pressure sensor detects the pressure difference inside and outside the cold storage.

[0029] S211: When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is greater than the second set value, the control device sends an opening instruction to the solenoid valve, the solenoid valve opens, and the low-temperature dry compressed air in the second gas cylinder is released into the cold storage.

[0030] S212: When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas cylinder stops releasing low-temperature dry compressed air.

[0031] Further, the control method of the full-automatic anti-icing system includes the following steps:

[0032] S220: The control device obtains the opening instruction of the sample transfer hatch or the maintenance door;

[0033] S221: The control device controls the solenoid valve to open, and the second gas tank releases low-temperature dry compressed air into the cold storage;

[0034] S212: When the pressure difference sensor detects that the pressure difference between the inside and outside of the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas tank stops releasing low-temperature dry compressed air.

[0035] Further, the control method of the full-automatic anti-icing system includes the following steps:

[0036] S230: The pressure sensor monitors the gas pressure in the second gas tank;

[0037] S231: When the gas pressure in the second gas tank is less than the lower limit of the third set value, the control device controls the control valve to open, and the compressed air in the first gas tank is supplemented into the second gas tank;

[0038] S232: When the gas pressure in the second gas tank reaches the upper limit of the third set value, the control device controls the control valve to open, and the compressed air in the first gas tank stops being supplemented into the second gas tank.

[0039] Further, the control method of the full-automatic anti-icing system includes the following steps:

[0040] S240: The pressure detection component of the air compressor detects the pressure in the first gas tank;

[0041] S241: When the pressure detection component detects that the pressure in the first gas tank is less than the lower limit of the first set value, the air compressor starts and compresses air and supplements it into the first gas tank;

[0042] S242: When the pressure detection component detects that the pressure in the first gas tank is greater than the upper limit of the first set value, the air compressor stops working.

[0043] Compared with the prior art, the full-automatic anti-icing system of the present invention includes a cold storage, an air compressor, a filter, a first air tank, a dryer, a control valve, and a control device. The air compressor, the filter, the first air tank, the dryer, the control valve, and the control device are all arranged outside the cold storage. The air compressor is connected to the filter, the filter is connected to the air inlet of the first air tank, the air outlet of the first air tank is connected to the dryer, and the first air tank is used to store compressed air. A second air tank is arranged inside the cold storage, and the second air tank is used to store low-temperature dry compressed air. The dryer is connected to the second air tank through the control valve; the control device is connected to the control valve, and the control valve is used to control the first air tank to output dry compressed air to the second air tank. This system can automatically release low-temperature clean compressed air, keep the internal pressure of the cold storage stable, and prevent the outside air of the cold storage from entering the cold storage to prevent the occurrence of icing phenomena. Description of the Drawings

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0045] Figure 1 Schematic diagram of the connection relationship of a full-automatic anti-icing system according to an embodiment of the present application;

[0046] Figure 2 Schematic top view structure diagram of a cold storage according to an embodiment of the present application;

[0047] Figure 3 Schematic side view structure diagram of a cold storage according to an embodiment of the present application;

[0048] Figure 4 Schematic top view structure diagram of a cold storage according to another embodiment of the present application;

[0049] Figure 5 Schematic side view structure diagram of a cold storage according to another embodiment of the present application;

[0050] Figure 6 Schematic flow diagram of the control method of a full-automatic anti-icing system according to an embodiment of the present application;

[0051] Figure 7 Schematic flow diagram of the control method of a full-automatic anti-icing system according to an embodiment of the present application;

[0052] Figure 8 Schematic flow diagram of the control method of a full-automatic anti-icing system according to an embodiment of the present application;

[0053] Figure 9 Schematic flow diagram of the control method of a full-automatic anti-icing system according to an embodiment of the present application.

[0054] Among them, 110 - air compressor, 120 - filter, 130 - first air tank, 140 - dryer, 150 - control valve, 160 - control device, 170 - differential pressure sensor, 180 - cold storage, 181 - second air tank, 182 - pressure sensor, 183 - heating device, 184 - solenoid valve, 185 - drainage device. Detailed implementation manners

[0055] To make the objectives, technical solutions and advantages of the present invention clearer, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0056] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0057] As Figure 1 shown, a fully automatic anti-icing system includes a cold storage 180, an air compressor 110, a filter 120, a first air tank 130, a dryer 140, a control valve 150 and a control device 160. The air compressor 110, the filter 120, the first air tank 130, the dryer 140, the control valve 150 and the control device 160 are all arranged outside the cold storage 180. The air compressor 110 is connected to the filter 120, the filter 120 is connected to the inlet of the first air tank 130, the outlet of the first air tank 130 is connected to the dryer 140, and the first air tank 130 is used to store compressed air. A second air tank 181 is arranged in the cold storage 180, and the second air tank 181 is used to store low-temperature dry compressed air. The dryer 140 is connected to the second air tank 181 through the control valve 150; the control device 160 is connected to the control valve 150, and the control valve 150 is used to control the first air tank 130 to output dry compressed air to the second air tank 181.

[0058] In this fully automatic anti-icing system, an air compressor 110 generates compressed air. The compressed air passes through a filter 120 which can filter out impurity particles and the like in the compressed air to obtain clean compressed air, and this clean compressed air is input into a first air tank 130. Since the clean compressed air output from the air compressor has a relatively high temperature, it is input into the first air tank 130 for storage and at the same time is cooled down. The clean compressed air in the first air tank 130 then passes through a dryer 140 to dry the clean compressed air, obtaining dry and clean compressed air. The dryer 140 is connected to a second air tank 181 in a cold storage 180 through a control valve 150, and a control device 160 is connected to the control valve 150. When the control device 160 issues an instruction to open the control valve 150, the control valve 150 opens, enabling the dry and clean compressed air output by the dryer 140 to be output into the second air tank 181, and the second air tank 181 is used to store low-temperature dry compressed air. This fully automatic anti-icing system can effectively utilize the energy of compressed air, avoid outputting extra work. There is a second air tank 181 in the cold storage, making the low-temperature clean compressed air in the second air tank 181 balance with and tend to be consistent with the internal temperature of the cold storage. When the second air tank 181 releases compressed air into the cold storage, the impact on the temperature of the cold storage is minimized. This fully automatic anti-icing system can automatically release low-temperature clean and dry compressed air according to requirements, keep the internal pressure of the cold storage stable, and prevent external air from entering the cold storage to prevent the occurrence of icing phenomena.

[0059] In one embodiment, the air compressor 110 has a pressure detection component that can detect the pressure in the first air tank 130 in real time and control the start and stop of the air compressor 110 according to the pressure value in the first air tank 130. The normal pressure range of the first air tank is set as a first set value, that is, the normal pressure range of the first air tank is set between the lower limit of the first set value and the upper limit of the first set value, and the first set value can be adjusted according to actual needs. When the pressure detection component detects that the pressure in the first air tank 130 is less than the lower limit of the first set value, the air compressor 110 starts and compresses air to supplement it into the first air tank; when the pressure detection component detects that the pressure in the first air tank is greater than the upper limit of the first set value, the air compressor 110 stops working. Automatic replenishment of compressed air to the first air tank 130 is achieved through the pressure detection component of the air compressor.

[0060] In one embodiment, a filter 120 is provided between the air compressor 110 and the first air tank 130. The compressed air output by the air compressor 110 enters the filter for filtration, and the filtered compressed air enters the first air tank 130 for storage. The filter 120 is selected from one or more of a metal mesh filter, an activated carbon filter, or a nylon mesh filter, and is used to filter the compressed air. The metal mesh filter can be used as the primary coarse dust filter for the compressed air, the activated carbon filter can be used for the adsorption filtration of macromolecular organic impurities, and the nylon mesh filter is used to filter dust of different particle sizes according to different filter mesh pores. The filter can select any two or three of the metal mesh filter, the activated carbon filter, or the nylon mesh filter. Each filter can be provided with multiple filter meshes to filter particulate impurities of different sizes. The filter can also be provided as multiple groups of filters to ensure obtaining the required clean compressed air.

[0061] An electromagnetic valve 184 is provided in the cold storage 180 of the fully automatic anti-icing system. The electromagnetic valve 184 is respectively connected to the control device 160 and the second air tank 181. The electromagnetic valve 184 is used to control the release of low-temperature dry compressed air from the second air tank 181. The electromagnetic valve 184 receives the instruction of the control device 160. When the control device 160 sends an opening instruction to the electromagnetic valve 184, the electromagnetic valve 184 opens, and the low-temperature dry compressed air in the second air tank 181 is released into the cold storage 180; when the control device 160 sends a closing instruction to the electromagnetic valve 184, the electromagnetic valve 184 closes, and the second air tank 181 stops releasing the low-temperature dry compressed air.

[0062] The fully automatic anti-icing system further includes a differential pressure sensor 170. The differential pressure sensor 170 is disposed outside the cold storage and is connected to the control device 160 and the cold storage 180, and is used to detect the pressure difference between the inside and outside of the cold storage 180. The pressure difference between the inside and outside of the cold storage is set as a second set value. The second set value is set according to keeping the pressure between the inside and outside of the cold storage basically balanced and can be adjusted according to actual needs. When the differential pressure sensor 170 detects that the pressure difference between the inside and outside of the cold storage 180 is greater than the second set value, the control device 160 controls the electromagnetic valve 184 to open, and the second air tank 181 releases low-temperature dry compressed air into the cold storage 180; when the differential pressure sensor 170 detects that the pressure difference between the inside and outside of the cold storage is not greater than the second set value, the control device 160 controls the electromagnetic valve 184 to close, and the second air tank 181 stops releasing low-temperature dry compressed air into the cold storage 180. According to the detection result of the differential pressure sensor 170, it automatically controls whether the second air tank 181 releases low-temperature dry compressed air into the cold storage 180, so that the pressure between the inside and outside of the cold storage can always be kept within the set pressure difference range, keeping the pressure inside and outside the cold storage stable, preventing the outside air of the cold storage from entering the cold storage, and preventing the occurrence of icing phenomena.

[0063] In one embodiment, a sample transfer hatch and a maintenance door are provided in the cold storage 180 of the fully automatic anti-icing system. The sample transfer hatch and the maintenance door are respectively connected to the control device 160. When the control device 160 obtains an opening instruction for the sample transfer hatch or the maintenance door, the control device 160 controls the solenoid valve 184 to open, and the second gas tank 181 releases low-temperature dry compressed air into the cold storage 180. Under normal circumstances, when the transfer hatch or the maintenance door is opened, the differential pressure sensor 170 will detect that the pressure difference inside and outside the cold storage is greater than the second set value, and the control device 160 will also control the solenoid valve 184 to open, that is, the control device 160 will receive feedback from the dual systems of the sample transfer hatch or the maintenance door and the differential pressure sensor 170, and control the solenoid valve 184 to open to ensure that the low-temperature dry compressed air is released into the cold storage 180 in time, keep the pressure inside and outside the cold storage stable, prevent the outside air of the cold storage from entering the cold storage through the hatch or the maintenance door, and prevent the water vapor in the air from freezing when encountering cold. When the differential pressure sensor 170 detects that the pressure difference inside and outside the cold storage 180 is not greater than the second set value, the control device 160 issues a closing instruction to the solenoid valve 184, the solenoid valve 184 closes, and the second gas tank 181 stops releasing low-temperature dry compressed air, so that when the pressure inside and outside the cold storage 180 reaches the equilibrium state, the solenoid valve 184 can be closed in time to stop deflation, avoid outputting extra work, and save energy.

[0064] The fully automatic anti-icing system further includes a pressure sensor 182. The pressure sensor 182 is disposed inside the cold storage 180 and is respectively connected to the control device 160 and the second gas tank 181. The pressure sensor 182 is used to monitor the gas pressure in the second gas tank 181. The normal pressure range of the second gas tank 181 is set as the third set value, that is, the normal pressure range of the second gas tank is set between the lower limit of the third set value and the upper limit of the third set value, and the third set value can be adjusted according to actual needs. When the gas pressure in the second gas tank 181 is less than the lower limit of the third set value, the control device 160 controls the control valve 150 to open, so that the compressed air in the first gas tank 130 is supplemented into the second gas tank 181; when the gas pressure in the second gas tank 181 reaches the upper limit of the third set value, the control device 160 controls the control valve 150 to close. The control device 160 controls the opening and closing of the control valve 150 according to the detection result of the pressure sensor 182, so that the compressed air in the first gas tank 130 is timely supplemented into the second gas tank 181, preventing the low-temperature dry compressed air in the second gas tank 181 from being too little to cause the second gas tank 181 to fail to release the low-temperature dry compressed air in time, affecting the anti-icing effect of the cold storage 180.

[0065] In one embodiment, such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the full-automatic anti-icing system further includes a heating device 183 and a drainage device 185. The heating device 183 is arranged on the outer periphery of the second air tank 181 and is connected to the control device 160, the second air tank 181 and the drainage device 185, and is used to heat the second air tank 181 and the drainage device 185. The heating device 183 can be a heating film, which can be one layer or multiple layers. The heating film is sleeved on the periphery of the second air tank 181. The drainage device 185 is arranged outside the heating device 183 and is connected to the control device 160, the heating device 183 and the second air tank 181, and is used to receive the water generated when the heating device 183 heats the second air tank 181 and drain the received water out of the cold storage. It can be understood that the output end of the drainage device 185 is connected to the outside of the cold storage 180, and the drainage device 185 is arranged below the second air tank 181 to receive the water droplets falling under the action of gravity. When the control device 160 controls the heating device 183 to heat, the ice layer outside the second air tank 181 melts into water due to heating, and then is collected by the drainage device 185 and drained out of the cold storage. At the same time, the heating device 183 heats the drainage device 185 to ensure that the water in the drainage device 185 flows out of the cold storage smoothly. The full-automatic anti-icing system can automatically perform ice melting and ice discharging operations on the second air tank 181, prevent the second air tank 181 from icing, make the maintenance of the second air tank more convenient, and ensure the normal operation of the second air tank 181.

[0066] In another embodiment, as Figure 4 and Figure 5 shown, two or more second air tanks 181 are provided. Each second air tank 181 is provided with a solenoid valve 184 to separately control the connected second air tank 181. The second air tanks are connected by pipelines, and pressure sensors are arranged on the pipelines to monitor the pressure of each second air tank respectively. When the pressure in the second air tank is insufficient, the control device 160 opens the control valve 150 to supplement dry compressed air into the corresponding second air tank. A set of heating device and drainage device are arranged on the outer periphery of each second air tank to automatically perform ice melting and ice discharging operations on each second air tank, prevent the second air tank from icing, make the maintenance of each second air tank more convenient, and ensure the normal operation of each second air tank. By arranging multiple second air tanks in the cold storage 180, according to the actual situation in the cold storage, they can be distributed at multiple positions in the cold storage to quickly release low-temperature dry compressed air at each corner of the cold storage, so that the pressure in the cold storage quickly balances with the pressure outside the cold storage, achieving an excellent anti-icing effect.

[0067] As Figure 6 shown, the control method of the full-automatic anti-icing system includes the following steps:

[0068] S210: The differential pressure sensor detects the pressure difference between inside and outside the cold storage;

[0069] S211: When the pressure difference sensor detects that the pressure difference between the inside and outside of the cold storage is greater than the second set value, the control device sends an opening instruction to the solenoid valve, the solenoid valve opens, and the low-temperature dry compressed air in the second gas tank is released into the cold storage;

[0070] S212: When the pressure difference sensor detects that the pressure difference between the inside and outside of the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas tank stops releasing low-temperature dry compressed air.

[0071] Further, as Figure 7 shown, the control method of the full-automatic anti-icing system further includes the following steps:

[0072] S220: The control device obtains the opening instruction of the sample transfer hatch or the maintenance door;

[0073] S221: The control device controls the solenoid valve to open, and the second gas tank releases low-temperature dry compressed air into the cold storage;

[0074] S212: When the pressure difference sensor detects that the pressure difference between the inside and outside of the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas tank stops releasing low-temperature dry compressed air.

[0075] Further, as Figure 8 shown, the control method of the full-automatic anti-icing system further includes the following steps:

[0076] S230: The pressure sensor monitors the gas pressure in the second gas tank;

[0077] S231: When the gas pressure in the second gas tank is less than the lower limit of the third set value, the control device controls the control valve to open, and the compressed air in the first gas tank is supplemented into the second gas tank;

[0078] S232: When the gas pressure in the second gas tank reaches the upper limit of the third set value, the control device controls the control valve to open, and the compressed air in the first gas tank stops being supplemented into the second gas tank.

[0079] Further, as Figure 9 shown, the control method of the full-automatic anti-icing system further includes the following steps:

[0080] S240: The pressure detection component of the air compressor detects the pressure in the first gas tank;

[0081] S241: When the pressure detection component detects that the pressure in the first gas tank is less than the lower limit of the first set value, the air compressor starts and compresses air to supplement it into the first gas tank;

[0082] S242: When the pressure detection component detects that the pressure in the first air tank is greater than the upper limit of the first set value, the air compressor stops working.

[0083] According to the detection result of the differential pressure sensor, this control method controls the start and stop of the solenoid valve to make the second air tank work. This control method can also control the solenoid valve according to the information that the cold storage hatch or the maintenance door is opened to make the second air tank work. This control method can also control the opening and closing of the control valve according to the detection result of the pressure sensor to supplement the dry compressed air in the first air tank to the second air tank. And according to the set conditions, it controls the operation of the heating device and the drainage device.

[0084] The control method of this fully automatic anti-icing system can realize the automatic control of the fully automatic anti-icing system, keep the pressure inside and outside the cold storage balanced, automatically and timely supplement low-temperature, clean and dry compressed air to the inside of the cold storage, increase the internal pressure of the storage body to prevent external water vapor from entering the storage, and avoid icing at the internal part of the cold storage, the transfer hatch, the maintenance door and other connecting parts inside and outside the storage. This fully automatic anti-icing system has a high degree of automation and intelligence. The entire anti-icing system completes automatic monitoring and control without manual intervention, ensuring the normal operation of the cold storage, the hatch, the maintenance door and various internal devices. The heating device and the drainage device timely remove the ice around the second air tank, further ensuring the normal operation of the second air tank.

[0085] The above-described embodiments only represent several embodiments of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A fully automatic anti-icing system, characterized in that, It includes a cold storage, an air compressor, a filter, a first air tank, a dryer, a control valve, a control device, and a differential pressure sensor, and the differential pressure sensor is used to detect the pressure difference inside and outside the cold storage; The air compressor, the filter, the first air tank, the dryer, the control valve, and the control device are all arranged outside the cold storage. The air compressor is connected to the filter, the filter is connected to the air inlet of the first air tank, the air outlet of the first air tank is connected to the dryer, and the first air tank is used for storing compressed air. An electromagnetic valve and a second air tank are arranged inside the cold storage, and the second air tank is used for storing low-temperature and dry compressed air. The electromagnetic valve is respectively connected to the control device and the second air tank, and the electromagnetic valve is used to control the second air tank to release low-temperature and dry compressed air. The dryer is connected to the second air tank through the control valve; The control device is connected to the control valve, and the control valve is used to control the first air tank to output dry compressed air to the second air tank; The cold storage is provided with a sample transfer hatch and a maintenance door. The differential pressure sensor, the sample transfer hatch, and the maintenance door are respectively connected to the control device. The control device selectively controls the electromagnetic valve to open according to the feedback of the sample transfer hatch or the maintenance door or the differential pressure sensor, so that the second air tank releases low-temperature and dry compressed air into the cold storage.

2. The fully automatic anti-icing system according to claim 1, wherein The air compressor has a pressure detection component capable of detecting the pressure inside the first air tank in real time, When the pressure detection component detects that the pressure inside the first air tank is less than the lower limit of the first set value, the air compressor starts and compresses air and supplements it into the first air tank; When the pressure detection component detects that the pressure inside the first air tank is greater than the upper limit of the first set value, the air compressor stops working.

3. The fully automatic anti-icing system according to claim 2, characterized in that, The filter is selected from one or more of a metal mesh filter, an activated carbon filter, or a nylon mesh filter and is used to filter compressed air.

4. A fully automatic anti-icing system according to claim 1, wherein The differential pressure sensor is arranged outside the cold storage and is connected to the control device and the cold storage, When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is greater than the second set value, the control device controls the electromagnetic valve to open, and the second air tank releases low-temperature and dry compressed air into the cold storage; When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is not greater than the second set value, the control device controls the electromagnetic valve to close.

5. The fully automatic anti-icing system according to claim 1, characterized in that, The full-automatic anti-icing system further includes a pressure sensor. The pressure sensor is arranged inside the cold storage and is respectively connected to the control device and the second air tank. The pressure sensor is used to monitor the gas pressure inside the second air tank, When the gas pressure inside the second air tank is less than the lower limit of the third set value, the control device controls the control valve to open, so that the compressed air inside the first air tank is supplemented into the second air tank; When the gas pressure inside the second air tank reaches the upper limit of the third set value, the control device controls the control valve to close.

6. The fully automatic anti-icing system according to claim 5, wherein The full-automatic anti-icing system further includes a heating device and a drainage device. The heating device is arranged on the outer periphery of the second gas tank and is connected to the control device, the second gas tank and the drainage device, and is used to heat the second gas tank and the drainage device. The drainage device is arranged outside the heating device and is connected to the control device, the heating device and the second gas tank, and is used to receive the water generated when the heating device heats the second gas tank and discharge the received water out of the cold storage.

7. The fully automatic anti-icing system according to claim 6, characterized in that, A plurality of second gas tanks are provided, and each second gas tank is provided with a solenoid valve for individual control. The second gas tanks are connected by pipelines, and a pressure sensor is arranged on the pipeline. A set of heating device and drainage device is arranged on the outer periphery of each second gas tank.

8. A control method for a fully automatic anti-icing system, characterized in that, It is controlled by the full-automatic anti-icing system described in any one of the above claims 1-7, and specifically includes the following steps: S210: The differential pressure sensor detects the pressure difference inside and outside the cold storage. S211: When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is greater than the second set value, the control device sends an opening instruction to the solenoid valve, the solenoid valve opens, and the low-temperature dry compressed air in the second gas tank is released into the cold storage. S212: When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas tank stops releasing low-temperature dry compressed air.

9. The control method of a fully automatic anti-icing system according to claim 8, characterized in that, It includes the following steps: S220: The control device obtains the opening instruction of the sample transfer hatch or the maintenance door. S221: The control device controls the solenoid valve to open, and the second gas tank releases low-temperature dry compressed air into the cold storage. S212: When the differential pressure sensor detects that the pressure difference inside and outside the cold storage is not greater than the second set value, when the control device sends a closing instruction to the solenoid valve, the solenoid valve closes, and the second gas tank stops releasing low-temperature dry compressed air.

10. The control method of a full-automatic anti-icing system according to claim 9, characterized in that, It includes the following steps: S230: The pressure sensor monitors the gas pressure in the second gas tank. S231: When the gas pressure in the second gas tank is less than the lower limit of the third set value, the control device controls the control valve to open, and the compressed air in the first gas tank is supplemented into the second gas tank. S232: When the gas pressure in the second gas tank reaches the upper limit of the third set value, the control device controls the control valve to close, and the compressed air in the first gas tank stops being supplemented into the second gas tank.

11. The control method of a full-automatic anti-icing system according to claim 10, characterized in that, It includes the following steps: S240: The pressure detection component of the air compressor detects the pressure in the first gas tank. S241: When the pressure detection component detects that the pressure in the first gas tank is less than the lower limit of the first set value, the air compressor starts and compresses air and supplements it into the first gas tank. S242: When the pressure detection component detects that the pressure in the first gas tank is greater than the upper limit of the first set value, the air compressor stops working.

Images