Alarm device of freeze dryer and freeze dryer system

Abstract

The utility model provides an alarm device of a freeze dryer and a freeze dryer system, and relates to the field of remote monitoring, the alarm device comprises a controller, a detection device and a lower computer, the detection device is respectively connected with a freeze-drying box, a pipeline of the freeze-drying box, a cold trap, a pipeline of the cold trap and the lower computer, and is used for detecting operation data of at least one of the freeze-drying box and the cold trap; the lower computer is connected with the controller and is used for feeding back fault information corresponding to the operation data when a fault occurs, and the fault information comprises the position where the fault occurs; and the controller is used for sending the fault information to a user. The operation data of the freeze dryer are detected through the detection device, the lower computer determines the fault information according to the operation data, the lower computer feeds back the fault information to the controller through data interaction, then the controller returns the fault information to a user, and the user can remotely monitor the freeze dryer without being close to the freeze dryer in real time.

Description

Technical Field

[0001] The utility model relates to the field of remote monitoring, in particular to an alarm device for a freeze dryer and a freeze dryer system. Background Art

[0002] The full name of freeze dryer is vacuum freeze dryer. Freeze drying is to cool down the material containing a lot of water and freeze it into a solid in advance. Then, water vapor is sublimated directly from the solid under vacuum conditions, while the material itself remains in the frozen ice shelf, so that the dried product does not lose its original solid skeleton structure, maintains the original shape of the material, and the product has good rehydration properties. During the use of freeze dryers, personnel are generally required to watch over the machine. If there is no personnel watching over it, abnormalities in the freeze drying process cannot be known in the first time, thus missing the best time to deal with it. Considering that the working time of the freeze dryer is often too long, and there are cases where the operating time exceeds one day, the operation and maintenance personnel cannot watch it in real time at this time, and if a long period of freeze drying fails in the middle, re-freeze drying will affect the output efficiency. Utility Model Content

[0003] The utility model aims to provide an alarm device for a freeze dryer and a freeze dryer system, so that a user can remotely monitor the freeze dryer without being near the freeze dryer in real time.

[0004] In order to solve the above technical problems, the present application provides an alarm device for a freeze dryer, the freeze dryer comprising a freeze drying box and a cold trap, the alarm device for the freeze dryer comprising a controller, a detection device and a lower computer:

[0005] The detection device is connected to the freeze drying box, the pipeline of the freeze drying box, the cold trap, the pipeline of the cold trap and the lower computer respectively, and is used to detect the operation data of at least one of the freeze drying box and the cold trap;

[0006] The lower computer is connected to the controller and is used to feed back fault information corresponding to the operating data when a fault occurs, wherein the fault information includes the location where the fault occurs;

[0007] The controller is used to send the fault information to a user.

[0008] On the other hand, the detection device includes a cold trap coil temperature probe;

[0009] The cold trap coil temperature probe is arranged on the inner coil of the cold trap and is used to detect the temperature of the inner coil. The temperature of the inner coil is negatively correlated with the water capture capacity of the cold trap.

[0010] In another aspect, the detection device includes a box vacuum probe;

[0011] The chamber vacuum probe is arranged at the top of the exterior of the freeze drying chamber and is used to detect the vacuum value inside the freeze drying chamber during the freeze drying process.

[0012] On the other hand, the detection device includes a box pressure transmitter and a well pressure transmitter;

[0013] The chamber pressure transmitter is arranged at the top of the outside of the freeze drying chamber, and is used to detect the pressure value of the freeze drying chamber;

[0014] The trap pressure transmitter is arranged at the top outside the cold trap and is used to detect the pressure of the cold trap.

[0015] On the other hand, the silicone oil in the silicone oil pipeline is used to flow from the inlet of the silicone oil pipeline through each plate layer of the freeze drying box and the outlet of the silicone oil pipeline to heat or cool the product on the plate layer, and the detection device includes a plate inlet temperature probe and a plate outlet temperature probe;

[0016] The plate outlet temperature probe is arranged in the silicone oil pipeline at a position close to the outlet of the freeze drying box, and is used to detect the outlet temperature of the plate layer;

[0017] The plate inlet temperature probe is arranged in the silicone oil pipeline near the inlet of the freeze drying box, and is used to detect the inlet temperature of the plate layer. The inlet temperature and the outlet temperature are both positively correlated with the temperature change of the product.

[0018] In another aspect, the detection device includes a plurality of product temperature probes;

[0019] The product temperature probes are respectively arranged on each plate layer in the freeze drying box, and are used to detect the product temperature in the freeze dryer.

[0020] On the other hand, the detection device includes a cooling water pressure switch;

[0021] The cooling water pressure switch is arranged on the cooling water inlet pipeline and is used to detect the pressure of the cooling water. The cooling water is used to take away the heat generated by the refrigerant in the compressor. The compressor is connected to the freeze drying box and the cold trap and is used to cool the freeze drying box and the cold trap.

[0022] On the other hand, the freeze dryer further comprises a filter, the filter being connected to the air inlet pipeline of the freeze drying box and the air inlet pipeline of the cold trap, and being used for filtering the gas entering the freeze drying box and the gas entering the cold trap, and the detection device comprising a box discharge temperature probe, a trap discharge temperature probe and a filter discharge temperature probe;

[0023] The box discharge temperature probe is arranged at the bottom of the freeze drying box, and is used to detect the temperature of water discharged from the freeze drying box;

[0024] The trap discharge temperature probe is arranged at the bottom of the freeze drying chamber, and is used to detect the temperature of the water discharged from the cold trap;

[0025] The filter discharge temperature probe is arranged on the discharge valve pipeline of the filter and is used to detect the temperature of the drainage pipeline of the filter.

[0026] In order to solve the above technical problems, the present application also provides a freeze dryer system, characterized in that it includes the above-mentioned freeze dryer alarm device and also includes a freeze dryer connected to the freeze dryer alarm device.

[0027] The present application provides an alarm device for a freeze dryer and a freeze dryer system, which relates to the field of remote monitoring, including a controller, a detection device and a lower computer: the detection device is respectively connected to the freeze dryer, the pipeline of the freeze dryer, the cold trap, the pipeline of the cold trap and the lower computer, and is used to detect the operating data of at least one of the freeze dryer and the cold trap; the lower computer is connected to the controller, and is used to feedback the fault information corresponding to the operating data when a fault occurs, and the fault information includes the location where the fault occurs; the controller is used to send the fault information to the user. The detection of the freeze dryer operating data is realized by the detection device, the lower computer determines the fault information according to the operating data, the lower computer feeds back the fault information to the controller through data interaction, the lower computer feeds back the fault information to the controller through data interaction, and then the controller returns the fault information to the user, and the user does not need to be near the freeze dryer in real time to remotely monitor the freeze dryer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the prior art and the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of an alarm device for a freeze dryer provided in this application;

[0030] Figure 2 A schematic diagram of the structure of a freeze dryer system provided in this application;

[0031] Figure 3 A schematic diagram of the structure of another freeze dryer system provided in this application. DETAILED DESCRIPTION

[0032] The core of the utility model is to provide an alarm device for a freeze dryer and a freeze dryer system, so that the user can remotely monitor the freeze dryer without being near the freeze dryer in real time.

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] Figure 1 This is a structural schematic diagram of an alarm device for a freeze dryer provided in the present application. The freeze dryer includes a freeze drying box and a cold trap. The alarm device for the freeze dryer includes a controller 1, a detection device 2 and a lower computer 3:

[0035] The detection device 2 is respectively connected to the freeze drying box, the pipeline of the freeze drying box, the cold trap, the pipeline of the cold trap and the lower computer 3, and is used to detect the operating data of at least one of the freeze drying box and the cold trap;

[0036] The lower computer 3 is connected to the controller 1 and is used to feedback the fault information corresponding to the operation data when a fault occurs, and the fault information includes the location where the fault occurs;

[0037] The controller 1 is used to send fault information to the user.

[0038] Freeze dryer, full name vacuum freeze dryer. Freeze drying is to cool down the material containing a lot of water and freeze it into a solid in advance. Then, under vacuum conditions, water vapor is sublimated directly from the solid, while the material itself remains in the frozen ice shelf, so that the dried product does not lose its original solid skeleton structure, maintains the original shape of the material, and the product has excellent rehydration properties. In actual applications, since the freeze dryer has a long working time, it is not conducive for the operation and maintenance personnel to monitor the work of the freeze dryer in real time on site, so the freeze dryer needs to be able to perform remote maintenance.

[0039] The alarm device of the freeze dryer provided in the present application includes a controller 1, a detection device 2 and a lower computer 3, and the controller 1 sends a control instruction to the lower computer 3, and then the freeze dryer works based on the control instruction forwarded by the lower computer 3. During the working process of the freeze dryer, the detection device 2 will detect the operating data of the freeze dryer to determine the current state of the freeze dryer. Specifically, the detection device 2 can detect the temperature or pressure of the corresponding position of the freeze dryer, and the temperature and pressure of the corresponding position can characterize the working state of the freeze dryer. After the detection device 2 sends the operating data to the lower computer 3, the corresponding relationship between the operating data and the fault information is pre-stored in the lower computer 3, and the lower computer 3 can determine whether the current freeze dryer fails, and the fault information corresponding to the freeze dryer failure. After the lower computer 3 determines the current fault information, it is sent to the controller 1, and the controller 1 sends the fault information to the user, and the user can realize remote monitoring of the operating state of the freeze dryer, and find it in time when the freeze dryer fails, so as to avoid affecting the normal production process due to the long time of the freeze dryer failure.

[0040] In addition, the lower computer 3 is also connected to the freeze dryer. The lower computer 3 can also confirm that when the freeze dryer receives the control instruction sent by the controller 1, if the control instruction is not correctly executed, the lower computer 3 will still determine that the freeze dryer has a fault.

[0041] Furthermore, the controller 1 provided in the present application can reuse the controller of the freeze dryer itself to reduce the cost increase caused by the additional control. The controller of the freeze dryer itself is used to control the normal operation of the freeze dryer. After multiplexing, it is not only used to control the normal operation of the freeze dryer, but also used to send fault information.

[0042] The present application provides an alarm device for a freeze dryer and a freeze dryer system, which relates to the field of remote monitoring, and includes a controller 1, a detection device 2 and a lower computer 3: the detection device 2 is respectively connected to the freeze dryer, the pipeline of the freeze dryer, the cold trap, the pipeline of the cold trap and the lower computer 3, and is used to detect the operating data of at least one of the freeze dryer and the cold trap; the lower computer 3 is connected to the controller 1, and is used to feedback the fault information corresponding to the operating data when a fault occurs, and the fault information includes the location where the fault occurs; the controller 1 is used to send the fault information to the user. The detection of the freeze dryer operating data is realized by the detection device 2, and the lower computer 3 determines the fault information according to the operating data. The lower computer 3 feeds back the fault information to the controller 1 through data interaction, and then the controller 1 returns the fault information to the user, and the user does not need to be near the freeze dryer in real time to remotely monitor the freeze dryer.

[0043] Based on the above embodiments:

[0044] Figure 2 A schematic diagram of the structure of a freeze dryer system provided in this application;

[0045] Figure 3A schematic diagram of the structure of another freeze dryer system provided in this application;

[0046] In some embodiments, the detection device 2 is connected to the lower computer 3 via wires.

[0047] In actual applications, the lower computer 3 and the detection device 2 are both set up at the freeze dryer site. The detection device 2 may include multiple detection fields, including but not limited to detecting the temperature and pressure of various positions of the freeze dryer. After the detection device 2 detects the operating data, since the freeze dryer and the lower computer 3 are connected by wires, the detection device 2 can collect the operating data of the freeze dryer through the wires and send it to the lower computer 3.

[0048] The data transmission between the detection device 2 and the lower computer 3 through the wires can be realized more stably and quickly. The data collected by the lower computer 3 is judged by the program logic relationship, and the lower computer 3 can quickly determine whether the freeze dryer has a fault, thereby avoiding delays in the production process due to untimely fault discovery.

[0049] In some embodiments, the lower computer 3 is wirelessly connected to the controller 1 via S7 communication.

[0050] In order to realize remote control of the freeze dryer, the controller 1 does not need to be set up on site at the freeze dryer. The controller 1 can be connected to the lower computer 3 and the freeze dryer by wireless. Then the controller 1 can remotely control the operation of the freeze dryer, and can also remotely receive the fault information of the freeze dryer, and then alarm. The lower computer exchanges data with the upper computer through the S7 communication protocol. The controller and the lower computer are connected by a network cable. The functions of the control are: 1. Monitor the freeze dryer; 2. Send the fault information of the freeze dryer to the user.

[0051] In some embodiments, the detection device 2 includes a cold trap coil temperature probe 21;

[0052] The cold trap coil temperature probe 21 is arranged on the inner coil of the cold trap and is used to detect the temperature of the inner coil. The temperature of the inner coil is negatively correlated with the water capture capacity of the cold trap.

[0053] The working process of the freeze dryer is to absorb the water inside the product in the freeze drying box onto the coil inside the cold trap through sublimation. The lower the temperature of the coil of the cold trap, the stronger the water capture capacity of the cold trap. In addition, the water capture capacity of the cold trap is also related to the surface area of ​​the coil.

[0054] Specifically, two cold trap coil temperature probes 21 are also provided on the coil of the cold trap of the freeze dryer, and their main functions are: 1. to monitor the water capture capacity during the freeze drying process; 2. as the opening condition of the vacuum valve: when the cold trap temperature reaches -40°C, the delay is 5 minutes, and the automatic freeze drying vacuum valve opens; 3. as the basis for judging the effect of hot water defrosting.

[0055] In some embodiments, the detection device 2 includes a box vacuum probe 22;

[0056] The chamber vacuum probe 22 is disposed on the top of the exterior of the freeze drying chamber and is used to detect the vacuum value inside the freeze drying chamber during the freeze drying process.

[0057] A vacuum probe 22 is also provided on the top of the freeze drying chamber to control the vacuum value of the freeze drying chamber during the freeze drying process. A vacuum value that is too high or too low is not conducive to freeze drying: a vacuum value that is too low will affect the heat transfer during the freeze drying process and is not conducive to the drying of the product; a vacuum value that is too high will be not conducive to the sublimation of the moisture inside the product. Therefore, it is necessary to accurately detect the vacuum value. In addition, when the vacuum probe of the chamber fails, the vacuum control stops immediately.

[0058] In some embodiments, the detection device 2 includes a tank pressure transmitter 23 and a well pressure transmitter 24;

[0059] The chamber pressure transmitter 23 is arranged at the top of the outside of the freeze drying chamber, and is used to detect the pressure value of the freeze drying chamber;

[0060] The trap pressure transmitter 24 is arranged on the top of the outside of the cold trap and is used to detect the pressure of the cold trap.

[0061] The main functions of the box pressure transmitter 23 include: 1. Used as the judgment standard for the deflation and pre-deflation of the freeze drying box. When the box pressure reaches the deflation setting value, the deflation of the freeze drying box is considered to be completed; 2. Used as the basis for pressure control during sterilization. The pressure of the freeze dryer during sterilization is generally 2.2-2.4BarA; 3. Used as the basis for pressure control during cleaning. The pressure of the freeze dryer during cleaning generally does not exceed 1.5BarA; If the box pressure transmitter fails, the above operations will be suspended.

[0062] The main functions of the trap pressure transmitter 24 include: 1. Used as the judgment standard for cold trap deflation. When the cold trap pressure reaches the deflation set value, the cold trap deflation is considered to be completed; 2. Used as the basis for pressure control during sterilization. The pressure of the freeze dryer during sterilization is generally 2.2-2.4BarA; 3. Used as the basis for pressure control during cleaning. The pressure of the freeze dryer during cleaning generally does not exceed 1.5BarA; 4. Used as the basis for pressure control during defrosting. The pressure of the freeze dryer during defrosting generally does not exceed 1.5BarA; If the box pressure transmitter fails, the above operations are suspended.

[0063] On the door side of the freeze dryer, there is a cylinder on the top, bottom, left and right sides of the door, which is used to lock or unlock the door of the freeze dryer. The cylinder is a commonly used power element in mechanical equipment. It converts the pressure energy of compressed air into mechanical energy and drives the mechanism to achieve reciprocating linear motion, swinging or rotary motion.

[0064] Each of the four cylinders on the upper, lower, left, and right sides of the freeze dryer is equipped with a lock position switch. When the freeze dryer locks the door command, the freeze dryer is locked. 1. When the four cylinder lock position switches on the upper, lower, left, and right sides have signals at the same time, the freeze dryer is considered to have locked the door in place; 2. When one or more cylinder lock position switches have no signals at the same time, a corresponding door lock alarm failure fault will be generated.

[0065] Each of the four cylinders on the upper, lower, left, and right sides of the freeze dryer is equipped with an unlock position switch. When the freeze dryer unlocks the door command, the freeze dryer is locked. 1. When the four cylinder unlock position switches on the upper, lower, left, and right sides have signals at the same time, the freeze dryer is considered to have locked the door; 2. When one or more cylinder unlock position switches have no signals at the same time, a corresponding door lock alarm failure will be generated.

[0066] A compressed air pressure switch is installed on the compressed air inlet pipeline of the freeze dryer to supply energy to the pneumatic valve. When the compressed air pressure is lower than 4BAR, a low compressed air pressure alarm will occur.

[0067] A door closing position switch is set on the upper right side of the freeze dryer's door. When performing automatic freeze drying, cleaning, sterilization, vacuuming and other operations, if the door closing signal is not detected, a door closing failure alarm will be generated.

[0068] A high-pressure safety valve is installed at the bottom of the freeze drying box, and a high-pressure safety valve is installed at the bottom of the cold trap. The high-pressure safety valve is an important component to prevent the freeze drying box and the cold trap from overpressure. For freeze dryers without steam sterilization, the freeze drying box and the cold trap are not pressure vessels, and overpressure will cause danger.

[0069] The circulating pump differential pressure switches installed at both ends of the circulating pump of the silicone oil system monitor the circulating pressure of the silicone oil system. When the circulating pressure of the silicone oil system is lower than 0.5BAR, a low circulating pump differential pressure alarm will be generated. If it is a double-head pump, it will switch to the other pump to work.

[0070] A trap defrost valve feedback is provided on the pipeline connecting the pure steam and the cold trap. When the cold trap of the freeze dryer is defrosted, the trap defrost valve is opened. If there is a demand output signal but no feedback signal, a trap defrost valve fault alarm will occur.

[0071] Steam valve feedback is provided on the pipeline between pure steam and sterile filtration bypass valve, which is used for sterilization of freeze dryer. When the steam valve is opened, there is a demand output signal, but no feedback signal, a steam valve fault alarm will occur.

[0072] A cleaning valve feedback is provided on the pipeline connecting the cleaning water to the box inlet valve and the trap inlet valve. When the freeze dryer is cleaned or defrosted with hot water, the cleaning valve is opened and there is a demand output signal. If there is no feedback signal, a cleaning valve fault alarm will occur.

[0073] A pump head vacuum probe is installed on the top of the freeze dryer cold trap to detect the sealing performance of the plate layer bellows: the plate layer bellows is evacuated, and if the pump head vacuum value reaches 10ubar within 10 minutes, the sealing performance of the plate layer bellows is considered qualified.

[0074] A vacuum valve feedback is provided on the pipeline connecting the freeze dryer vacuum pump and the cold trap. When the freeze dryer is vacuumed, the vacuum valve is opened and there is a demand output signal. If there is no feedback signal, a vacuum valve fault alarm will occur.

[0075] A main valve opening position switch is provided at the tail of the main valve oil cylinder, which is used to generate a main valve opening failure alarm if the main valve opening signal is not detected within 1 minute when the main valve is opened.

[0076] A main valve closing pressure switch is provided on the pipeline of the main valve of the hydraulic station. When the main valve closing signal is not detected within 1 minute during the opening and closing operation, a main valve closing failure alarm will be generated.

[0077] The top of the plate cylinder is equipped with a plate top position switch to detect whether the plate is at the highest position. It is often used in freeze dryer plugging, cleaning, sterilization, freeze drying loading and unloading, and plate bellows testing.

[0078] The hydraulic station controls the plate layer with a plate layer bottom position switch to detect whether the plate layer is at the lowest position. It is often used in freeze dryer plugging, cleaning, sterilization, freeze drying loading and unloading, and plate layer bellows testing.

[0079] An emergency stop alarm is set in the middle of the left door of the freeze dryer electrical box for emergency handling of the freeze dryer equipment: when the emergency stop button is pressed, all power components stop working.

[0080] In some embodiments, the silicone oil in the silicone oil pipeline is used to flow through each plate layer of the freeze drying box and the outlet of the silicone oil pipeline along the silicone oil pipeline from the inlet of the silicone oil pipeline to heat or cool the product on the plate layer. The detection device 2 includes a plate inlet temperature probe 25 and a plate outlet temperature probe 26;

[0081] The plate outlet temperature probe 25 is arranged in the silicone oil pipeline near the outlet of the freeze drying box to detect the outlet temperature of the plate layer;

[0082] The plate inlet temperature probe 26 is arranged in the silicone oil pipeline near the inlet of the freeze-drying box, and is used to detect the inlet temperature of the plate layer. The inlet temperature and the outlet temperature are positively correlated with the temperature change of the product.

[0083] The silicone oil inlet pipeline of the freeze dryer is provided with a plate inlet temperature probe 25 and a plate outlet temperature probe 26. The plate inlet temperature probe is used to control the plate layer temperature of the freeze dryer. When the freeze dryer is controlling the temperature, if the plate inlet temperature probe 25 fails, the freeze dryer stops heating or cooling. The plate layer outlet temperature detected by the plate outlet temperature probe 26 is used to compare the plate layer inlet temperature.

[0084] In some embodiments, the detection device 2 includes a plurality of product temperature probes 27;

[0085] Product temperature probes are respectively arranged on each plate layer in the freeze drying chamber to detect the temperature of the product in the freeze dryer.

[0086] The freeze drying box includes multiple plate layers, and each plate layer will be placed with products. Therefore, for the temperature of each plate layer, a corresponding product temperature probe needs to be set to detect each plate layer.

[0087] Specifically, the freeze drying chamber has multiple plate layers, and a product temperature probe is placed on each plate layer. It is used to monitor the temperature changes of the product during the freeze drying process: when the product temperature approaches the control temperature, it is used as a sign of the end of this stage.

[0088] In some embodiments, the detection device 2 includes a cooling water pressure switch 28;

[0089] The cooling water pressure switch 28 is arranged on the cooling water inlet pipeline for detecting the pressure of the cooling water. The water inlet pipeline is connected to the freeze dryer and the cold trap. The cooling water is used to take away the heat generated by the refrigerant in the compressor. The compressor is connected to the freeze dryer and the cold trap for refrigerating the freeze dryer and the cold trap.

[0090] The cooling water is used to take away the heat released by the liquefaction of the freeze dryer refrigerant. If the pressure of the cooling water is not enough, it will cause the freeze dryer compressor to exhaust high pressure, which will cause the equipment to shut down and the subsequent work process cannot be carried out. Therefore, the cooling process can only be carried out after it is determined that the pressure of the cooling water reaches the set pressure value.

[0091] Specifically, a cooling water pressure switch 28 is provided on the cooling water inlet pipeline of the freeze dryer to remove the heat released by the liquefaction of the refrigerant in the freeze dryer. When the cooling water pressure is lower than 1.5 BAR, a low cooling water pressure alarm will be triggered.

[0092] In some embodiments, the freeze dryer further comprises a filter, which is connected to the air inlet pipeline and the air inlet pipeline of the cold trap, and is used to filter the gas entering the freeze drying box and the gas entering the cold trap, and the detection device 2 comprises a box discharge temperature probe 29, a trap discharge temperature probe 210 and a filter discharge temperature probe 211;

[0093] The box discharge temperature probe 29 is arranged at the bottom of the freeze drying box to detect the temperature of the water discharged from the freeze drying box;

[0094] The trap discharge temperature probe 210 is arranged at the bottom of the freeze drying chamber to detect the temperature of the water discharged from the cold trap;

[0095] The filter discharge temperature probe 211 is disposed on the discharge valve pipeline of the filter and is used to detect the temperature of the drainage pipeline of the filter.

[0096] Since the water flows from top to bottom, a box discharge temperature probe 29 is set at the bottom of the freeze dryer, a trap discharge temperature probe 210 is set at the bottom of the cold trap, and a filter discharge temperature probe 211 is set on the filter discharge valve pipeline of the freeze dryer. These serve as the basis for the freeze dryer sterilization timing. When these three temperature probes reach 121°C at the same time, the freeze dryer sterilization timing starts.

[0097] In some embodiments, the detection device 2 includes a heater internal temperature probe and a heater external temperature probe;

[0098] The heater internal temperature probe is arranged inside the heater of the freeze dryer, and the heater external temperature probe is arranged outside the heater of the freeze dryer, and is used to detect the temperature inside and outside the heater respectively.

[0099] When the temperature inside the silicone oil circulation heater exceeds the set value of 80°C, a heater over-temperature alarm will be generated. At this time, the heater stops heating, and manual reset is required to eliminate the alarm. Therefore, the internal temperature probe of the heater and the external temperature probe of the heater are used to detect the internal and external temperatures of the heater.

[0100] In some embodiments, a display device is also included;

[0101] The display device is connected to the detection device 2 and is used to display the operating data of the freeze dryer detected by the detection device 2.

[0102] Taking into account that the detection device 2 detects a large amount of data, the present application provides a display device, which is connected to the detection device 2. The display device can display the results of temperature-related detection in the detection device 2, and can also display the results of pressure-related detection in the detection device 2.

[0103] Specifically, the display device can be set to: "Area: XX, temperature: XX" and "Area: XX, pressure: XX", for example: "Area: first board layer, temperature: 30 degrees".

[0104] The display method of the display device includes but is not limited to the above method, and this application does not make too many limitations here.

[0105] In some embodiments, the process of the controller 1 sending the fault information to the user includes:

[0106] Determine the user's receiving method and corresponding receiving address, including SMS and email;

[0107] Send the fault information and the corresponding solution to the receiving address.

[0108] Specifically, taking the example of receiving alarm information by mailbox, a program for receiving freeze dryer alarm information by mailbox is developed in controller 1. The program developed in the host computer is written in script, and the language used is VBScript (Microsoft Visual Basic Script Editon). The content of the program includes:

[0109] 1. Sending mailbox, where you register an email address and designate it as a commonly used sending mailbox;

[0110] 2. Receiving mailbox, which is the mailbox that the user frequently logs in on the mobile phone or other computer;

[0111] 3. Email subject: the email subject is the alarm name of the freeze dryer;

[0112] 4. Email content: The email content is the possible cause of the alarm;

[0113] 5. Email attachments. Email attachments are usually files and information commonly used by the equipment, such as fault information troubleshooting, electrical schematics, functional design instructions, and other important information that helps with alarm troubleshooting.

[0114] Develop a program for all freeze dryer alarms in controller 1, including the alarm name and all possible alarm causes. The program developed in the host computer is presented according to the numerical mapping table: each alarm name corresponds to the relevant possible alarm cause, which can well avoid the mismatch between the alarm name and the alarm cause.

[0115] After receiving the alarm information, the user will check the alarm causes one by one according to his own experience or the documents provided until the freeze dryer returns to normal.

[0116] Figure 2 This is a structural schematic diagram of a freeze dryer system provided in the present application. The freeze dryer system includes the above-mentioned freeze dryer alarm device and also includes a freeze dryer connected to the freeze dryer alarm device.

[0117] For an introduction to the freeze dryer system provided in this application, please refer to the above embodiments, which will not be repeated here.

[0118] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0119] It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, article or device including the element.

[0120] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An alarm device for a freeze dryer, characterized in that: The freeze dryer includes a freeze drying box and a cold trap. The alarm device of the freeze dryer includes a controller, a detection device and a lower computer: The detection device is connected to the freeze drying box, the pipeline of the freeze drying box, the cold trap, the pipeline of the cold trap and the lower computer respectively, and is used to detect the operation data of at least one of the freeze drying box and the cold trap; The lower computer is connected to the controller and is used to feed back fault information corresponding to the operating data when a fault occurs, wherein the fault information includes the location where the fault occurs; The controller is used to send the fault information to a user.

2. The alarm device for a freeze dryer according to claim 1, characterized in that: The detection device includes a cold trap coil temperature probe; The cold trap coil temperature probe is arranged on the inner coil of the cold trap and is used to detect the temperature of the inner coil. The temperature of the inner coil is negatively correlated with the water capture capacity of the cold trap.

3. The freeze dryer alarm device according to claim 1, characterized in that: The detection device includes a box vacuum probe; The chamber vacuum probe is arranged at the top of the exterior of the freeze drying chamber and is used to detect the vacuum value inside the freeze drying chamber during the freeze drying process.

4. The alarm device for a freeze dryer according to claim 1, characterized in that: The detection device includes a box pressure transmitter and a well pressure transmitter; The chamber pressure transmitter is arranged at the top of the outside of the freeze drying chamber, and is used to detect the pressure of the freeze drying chamber; The trap pressure transmitter is arranged at the top outside the cold trap and is used to detect the pressure of the cold trap.

5. The alarm device for a freeze dryer according to claim 1, characterized in that: The silicone oil in the silicone oil pipeline is used to flow from the inlet of the silicone oil pipeline through each plate layer of the freeze drying box and the outlet of the silicone oil pipeline to heat or cool the product on the plate layer. The detection device includes a plate inlet temperature probe and a plate outlet temperature probe; The plate outlet temperature probe is arranged in the silicone oil pipeline at a position close to the outlet of the freeze drying box, and is used to detect the outlet temperature of the plate layer; The plate inlet temperature probe is arranged in the silicone oil pipeline near the inlet of the freeze drying box, and is used to detect the inlet temperature of the plate layer. The inlet temperature and the outlet temperature are both positively correlated with the temperature change of the product.

6. The alarm device for a freeze dryer according to claim 1, characterized in that: The detection device includes a plurality of product temperature probes; The product temperature probes are respectively arranged on each plate layer in the freeze drying box, and are used to detect the product temperature in the freeze dryer.

7. The alarm device for a freeze dryer according to claim 1, characterized in that: The detection device includes a cooling water pressure switch; The cooling water pressure switch is arranged on the cooling water inlet pipeline and is used to detect the pressure of the cooling water. The cooling water is used to take away the heat generated by the refrigerant in the compressor. The compressor is connected to the freeze drying box and the cold trap and is used to cool the freeze drying box and the cold trap.

8. The alarm device for a freeze dryer according to any one of claims 1 to 7, characterized in that: The freeze dryer also includes a filter, which is connected to the air inlet pipeline of the freeze drying box and the air inlet pipeline of the cold trap, and is used to filter the gas entering the freeze drying box and the gas entering the cold trap. The detection device includes a box discharge temperature probe, a trap discharge temperature probe and a filter discharge temperature probe; The box discharge temperature probe is arranged at the bottom of the freeze drying box, and is used to detect the temperature of the water discharged from the freeze drying box; The trap discharge temperature probe is arranged at the bottom of the freeze drying chamber, and is used to detect the temperature of the water discharged from the cold trap; The filter discharge temperature probe is arranged on the discharge valve pipeline of the filter and is used to detect the temperature of the drainage pipeline of the filter.

9. A freeze dryer system, characterized in that: The invention comprises the alarm device of the freeze dryer as claimed in any one of claims 1 to 8, and also comprises a freeze dryer connected to the alarm device of the freeze dryer.

Images