Cold and hot impact incubator with liquid nitrogen recovery device
By designing a liquid nitrogen recovery system in a hot and cold impact thermostat, the problems of large liquid nitrogen consumption and difficult recycling are solved, and efficient recycling and reuse of liquid nitrogen is achieved, which reduces experimental costs and reduces environmental impacts, and improves experimental efficiency and result accuracy.
Patent Information
- Application Number
- CN202422138974.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Traditional hot and cold impact thermostats have problems such as large consumption, difficulty in recycling and low utilization efficiency during the use of liquid nitrogen, which increases the cost of experiments and has an impact on the environment.
A hot and cold impact temperature box with a liquid nitrogen recovery device is designed. By setting up a liquid nitrogen recovery system in the box, including a filter device and a condenser, the efficient recovery and reuse of liquid nitrogen is achieved. The adjustment device is used to control the movement of the hanging basket assembly between the high-temperature zone and the low-temperature zone, the temperature simulation is performed by combining the heating element and the refrigeration system, and the gaseous liquid nitrogen is recovered into the liquid nitrogen tank through the recycling pump and exhaust pipe.
It realizes efficient recycling and reuse of liquid nitrogen, reduces experimental costs, reduces the impact on the environment, and improves the experimental efficiency and accuracy of results.
Smart Images
Figure CN223184562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of laboratory equipment, in particular to a cold and hot shock incubator with a liquid nitrogen recovery device. Background Art
[0002] Thermal shock incubators are common laboratory equipment used to simulate extreme temperature environments. However, traditional thermal shock incubators suffer from high liquid nitrogen consumption, difficulty in recovery, and low efficiency. This not only increases experimental costs but also has potential environmental impacts. Therefore, achieving efficient recovery and reuse of liquid nitrogen while ensuring experimental results has become a pressing issue in this field. Utility Model Content
[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to propose a cold and hot shock incubator that realizes efficient recovery and reuse of liquid nitrogen through a rationally designed liquid nitrogen recovery system, reduces experimental costs, and reduces environmental impact.
[0004] To achieve this purpose, the present invention adopts the following technical solutions:
[0005] The utility model provides a hot and cold shock incubator with a liquid nitrogen recovery device, comprising a box body, the box body being divided into a high-temperature zone and a low-temperature zone by a sealing plate, the high-temperature zone and the low-temperature zone being both provided with a sealed door and a sealed handle, the inner walls of the high-temperature zone and the low-temperature zone being both provided with a temperature sensor, a heating element being provided inside the high-temperature zone, the low-temperature zone being connected to a refrigeration system, and an adjustment device being provided between the high-temperature zone and the low-temperature zone to control the movement of a hanging basket assembly;
[0006] A control device and a liquid nitrogen recovery device installed through a mounting plate are respectively provided on one side of the box body. The liquid nitrogen recovery device is connected to the low-temperature zone through an exhaust pipe. The refrigeration system is provided on one side of the box body through a support plate. The refrigeration system includes a liquid nitrogen tank, which is connected to the low-temperature zone through a discharge pipe.
[0007] The preferred technical solution of the present utility model is that the liquid nitrogen recovery device includes a filter device connected to the exhaust pipe, the filter device is connected to a condenser through a conduit, the condenser is fixed to one side of the box through a mounting plate, the bottom of the condenser is connected to a recovery pump, and the recovery pump is connected to the liquid nitrogen tank through a recovery pipe.
[0008] The preferred technical solution of the present utility model is that the filtering device includes a filter box connected to the exhaust pipe, and two groups of mounting ports are opened on the top of the filter box, and the two groups of mounting ports are respectively installed with filter plates and adsorption plates, and mounting handles are provided on the top of the filter plate and adsorption plate, and are fitted with the top of the filter box, and grooves are provided on both sides of the mounting handles.
[0009] The preferred technical solution of the present invention is that a guide groove is opened inside the filter box, the bottom of the filter plate and the adsorption plate are arc-shaped, and a sealing sleeve is provided on the outer wall, and the filter plate and the adsorption plate fit in the guide groove through the sealing sleeve.
[0010] The preferred technical solution of the present utility model is that the adjusting device includes a motor arranged on the top of the box, and a screw rod and a sliding rod are respectively provided on both sides of the inside of the box. The screw rod is connected to the output end of the motor, and a connecting seat is respectively provided on the screw rod and the sliding rod, and the connecting seat is fixedly connected to the hanging basket assembly by bolts.
[0011] The preferred technical solution of the present utility model is that the hanging basket assembly includes an upper connecting plate and a lower connecting plate, and several groups of connecting rods are arranged between the upper connecting plate and the lower connecting plate. The upper connecting plate and the lower connecting plate are fixedly connected to the connecting seat by bolts on one side away from each other.
[0012] An optimal technical solution of the present invention is that the sealing plate is provided with a groove that fits with the upper connecting plate and the lower connecting plate, and the groove is provided with a limiting plate that abuts against the upper connecting plate and the lower connecting plate.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The utility model places the sample to be tested on the lower connecting plate and closes the sealing door. When it is necessary to simulate a low-temperature environment, the control device controls the regulating device to drive the connecting seats around the upper connecting plate and the lower connecting plate to move downward to the low-temperature zone, and the refrigeration system is started by the control device. The liquid nitrogen tank discharges liquid nitrogen into the low-temperature zone through the discharge pipe, so that the temperature inside the low-temperature zone drops rapidly to realize the low-temperature experiment of the sample to be tested; when it is necessary to simulate a high-temperature environment, the refrigeration system is turned off, the control device controls the regulating device to drive the connecting seats around the upper connecting plate and the lower connecting plate to move upward to the high-temperature zone, and the refrigeration system is started at the same time. The heating element heats the sample to be tested in the high-temperature zone for high-temperature experiments. During the low-temperature experiment, the liquid nitrogen in the liquid nitrogen tank is discharged into the low-temperature zone through the discharge pipe. The liquid nitrogen cools the low-temperature zone by absorbing heat in the low-temperature zone. The liquid nitrogen after absorbing heat is vaporized and discharged from the exhaust pipe into the filter device together with the air for filtration treatment before being discharged into the condenser. Under the action of the condenser, the gaseous liquid nitrogen is liquefied and recovered into the liquid nitrogen tank through the recovery pipe, thus realizing the efficient recovery and utilization of liquid nitrogen, reducing experimental costs, reducing the impact on the environment, complying with the concept of green environmental protection, and improving experimental efficiency.
[0015] 2. The utility model installs the filter plate and the adsorption plate in sequence inside the filter box through the installation handle, so that the sealing sleeves at the bottom of the filter plate and the adsorption plate are installed correspondingly and fit with the guide groove, thereby improving the sealing performance of the installation of the filter plate and the adsorption plate. At the same time, it can filter and adsorb impurities in the gaseous liquid nitrogen to ensure the purity of the gaseous liquid nitrogen, improve the effect of subsequent gaseous liquid nitrogen recovery, and improve the accuracy and reliability of subsequent experimental results. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of a hot and cold shock incubator provided in a specific embodiment of the present invention;
[0017] Figure 2 This is a diagram of the internal structure of a hot and cold shock incubator provided in a specific embodiment of the present invention;
[0018] Figure 3 This is a front view of a hot and cold shock incubator provided in a specific embodiment of the present invention;
[0019] Figure 4 This is a schematic diagram of the structure of the filtering device provided in a specific embodiment of the present utility model;
[0020] Figure 5 This is a schematic diagram of the hanging basket assembly provided in a specific embodiment of the present utility model moving to the low temperature zone;
[0021] Figure 6 This is a schematic diagram of the hanging basket assembly provided in a specific embodiment of the present invention moving to a high temperature zone;
[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0023] 1. Box body; 11. Sealed door; 12. Sealed handle; 13. High temperature zone; 14. Low temperature zone; 15. Temperature sensor; 2. Control device; 3. Adjustment device; 31. Motor; 32. Screw rod; 33. Slide rod; 34. Connecting seat; 35. Bolt; 4. Heating element; 5. Refrigeration system; 51. Support plate; 52. Liquid nitrogen tank; 53. Discharge pipe; 6. Liquid nitrogen recovery device; 61. Mounting plate; 62. Condenser; 63. Recovery pump; 64. Recovery pipe; 65. Exhaust pipe; 7. Filter device; 71. Filter box; 711. Guide groove; 712. Mounting port; 72. Mounting handle; 73. Groove; 74. Filter plate; 75. Adsorption plate; 76. Sealing sleeve; 8. Sealing plate; 81. Slot; 82. Limit plate; 9. Basket assembly; 91. Lower connecting plate; 92. Upper connecting plate; 93. Connecting rod. DETAILED DESCRIPTION
[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.
[0025] A cold and hot shock incubator with a liquid nitrogen recovery device includes a box body 1, the box body 1 being divided into a high-temperature zone 13 and a low-temperature zone 14 by a sealing plate 8. The high-temperature zone 13 and the low-temperature zone 14 are both provided with a sealed door 11 and a sealed handle 12. The inner walls of the high-temperature zone 13 and the low-temperature zone 14 are both provided with a temperature sensor 15. A heating element 4 is provided inside the high-temperature zone 13, and a refrigeration system 5 is connected to the low-temperature zone 14. An adjustment device 3 is provided between the high-temperature zone 13 and the low-temperature zone 14 to control the movement of the hanging basket assembly 9;
[0026] A control device 2 and a liquid nitrogen recovery device 6 installed through a mounting plate 61 are respectively provided on one side of the box body 1. The liquid nitrogen recovery device 6 is connected to the low-temperature zone 14 through an exhaust pipe 65. The refrigeration system 5 is provided on one side of the box body 1 through a support plate 51. The refrigeration system 5 includes a liquid nitrogen tank 52, and the liquid nitrogen tank 52 is connected to the low-temperature zone 14 through a discharge pipe 53.
[0027] The sealed door 11 is opened through the sealed handle 12, and the sample to be tested is placed on the hanging basket assembly 9. The sealed door 11 is closed. The control device 2, the temperature sensor 15 and the regulating device 3, the refrigeration system 5 and the heating element 4 are connected to each other by telecommunication. When it is necessary to simulate a low-temperature environment, the control device 2 controls the regulating device 3 to drive the hanging basket assembly 9 to move downward to the low-temperature zone 14, so that the sample to be tested is located in the low-temperature zone 14 for a low-temperature experiment. The refrigeration system 5 is started by the control device 2, and the liquid nitrogen tank 52 discharges liquid nitrogen into the low-temperature zone 14 through the discharge pipe 53, so that the temperature inside the low-temperature zone 14 drops rapidly to realize a low-temperature experiment on the sample to be tested; when it is necessary to simulate a high-temperature environment, the refrigeration system 5 is turned off, and the hanging basket assembly 9 is driven to move upward to the high-temperature zone 13 through the regulating device 3, and the heating element 4 is started at the same time. Heating is performed so that the sample to be tested is located in the high temperature zone 13 for a high temperature experiment. During the experiment, the temperature in the box 1 can be detected in real time by the temperature sensor 15. When an abnormality occurs, the temperature sensor 15 reacts to the control device 2, which is displayed on the display screen of the control device 2 and reminded by the buzzer. During the low temperature experiment, the liquid nitrogen in the liquid nitrogen tank 52 is discharged into the low temperature zone 14 through the discharge pipe 53. The liquid nitrogen cools the low temperature zone 14 by absorbing the heat in the low temperature zone 14. The liquid nitrogen after absorbing heat is vaporized and discharged from the exhaust pipe 65 together with the air into the liquid nitrogen recovery device 6 for recovery and treatment, and finally discharged back to the liquid nitrogen tank 52 for recovery, thereby realizing efficient recovery and utilization of liquid nitrogen, reducing experimental costs, reducing impact on the environment, complying with the concept of green environmental protection, and improving experimental efficiency.
[0028] As a possible implementation of this solution, preferably, the liquid nitrogen recovery device 6 includes a filter device 7 connected to the exhaust pipe 65, the filter device 7 is connected to the condenser 62 through a conduit, the condenser 62 is fixed to one side of the box body 1 through a mounting plate 61, and the bottom of the condenser 62 is connected to a recovery pump 63, and the recovery pump 63 is connected to the liquid nitrogen tank 52 through a recovery pipe 64.
[0029] The liquid nitrogen tank 52 discharges the liquid nitrogen into the low temperature zone 14 through the discharge pipe 53, and cools the low temperature zone 14 by absorbing the heat in the low temperature zone 14. The liquid nitrogen after absorbing the heat is gasified into gas and discharged into the filter device 7 together with the air through the exhaust pipe 65 for impurity removal and filtration treatment. Under the action of the recovery pump 63, the filtered gaseous liquid nitrogen is introduced into the condenser 62. Under the action of the condenser 62, the gaseous liquid nitrogen is liquefied into liquid nitrogen and then recovered to the liquid nitrogen tank 52 through the recovery pipe 64, thereby reducing the impact on the environment, achieving efficient recovery and utilization of liquid nitrogen, and reducing the cost of the experiment.
[0030] As a possible implementation of this scheme, preferably, the filtering device 7 includes a filter box 71 connected to the exhaust pipe 65, and two groups of mounting ports 712 are opened on the top of the filter box 71, and the two groups of mounting ports 712 are respectively installed with filter plates 74 and adsorption plates 75, and mounting handles 72 are provided on the top of the filter plates 74 and adsorption plates 75, and are fitted with the top of the filter box 71, and grooves 73 are provided on both sides of the mounting handles 72.
[0031] A guide groove 711 is provided inside the filter box 71 . The bottoms of the filter plate 74 and the adsorption plate 75 are arc-shaped, and a sealing sleeve 76 is provided on the outer wall. The filter plate 74 and the adsorption plate 75 fit in the guide groove 711 through the sealing sleeve 76 .
[0032] The filter plate 74 and the adsorption plate 75 are sequentially installed inside the filter box 71 by installing the handle 72, so that the sealing sleeves 76 at the bottom of the filter plate 74 and the adsorption plate 75 are installed correspondingly and fit with the guide groove 711, thereby improving the sealing performance of the installation of the filter plate 74 and the adsorption plate 75. At the same time, the impurities in the gaseous liquid nitrogen can be filtered and adsorbed to ensure the purity of the gaseous liquid nitrogen, improve the effect of subsequent gaseous liquid nitrogen recovery, and improve the accuracy and reliability of subsequent experimental results.
[0033] As a possible implementation scheme of this solution, preferably, the adjusting device 3 includes a motor 31 arranged on the top of the box body 1, and a screw rod 32 and a sliding rod 33 are respectively provided on both sides of the inside of the box body 1. The screw rod 32 is connected to the output end of the motor 31, and a connecting seat 34 is respectively provided on the screw rod 32 and the sliding rod 33. The connecting seat 34 is fixedly connected to the hanging basket assembly 9 by a bolt 35.
[0034] The hanging basket assembly 9 includes an upper connecting plate 92 and a lower connecting plate 91, and a plurality of connecting rods 93 are provided between the upper connecting plate 92 and the lower connecting plate 91. The upper connecting plate 92 and the lower connecting plate 91 are fixedly connected to the connecting seat 34 by bolts 35 on one side away from each other.
[0035] The control device 2 controls the operation of the motor 31 so that the motor 31 rotates to drive the screw rod 32 to rotate, and the screw rod 32 drives the connecting seat 34 to move up and down along the slide rod 33 to adjust the position of the sample to be tested between the upper connecting plate 92 and the lower connecting plate 91 in the high temperature zone 13 and the low temperature zone 14, which facilitates high temperature and low temperature experiments on the sample to be tested, improves the convenience and operability of the experiment, and reduces the difficulty of the experiment.
[0036] As a possible implementation of this solution, preferably, the sealing plate 8 is provided with a groove 81 that fits with the upper connecting plate 92 and the lower connecting plate 91 , and the groove 81 is provided with a limiting plate 82 that abuts against the upper connecting plate 92 and the lower connecting plate 91 .
[0037] The upper connecting plate 92 and the lower connecting plate 91 are respectively abutted against the two sides of the limit plate 82 to control the moving position of the upper connecting plate 92 and the lower connecting plate 91. When the upper connecting plate 92 moves to fit the top of the limit plate 82, the hanging basket assembly 9 is located in the low-temperature zone 14. At the same time, the high-temperature zone 13 is isolated from the low-temperature zone 14 under the action of the sealing plate 8, so as to facilitate the low-temperature experiment of the sample to be tested; when the lower connecting plate 91 moves to fit the bottom of the limit plate 82, the hanging basket assembly 9 is located in the high-temperature zone 13. At the same time, the low-temperature zone 14 is isolated from the high-temperature zone 13 under the action of the sealing plate 8, so as to facilitate the high-temperature test of the sample to be tested, thereby ensuring the accuracy and reliability of high-temperature and low-temperature experiments.
[0038] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application are also within the scope of protection of the present invention.
Claims
1. A hot and cold shock incubator with a liquid nitrogen recovery device, characterized in that: The invention comprises a box body (1), wherein the box body (1) is divided into a high-temperature zone (13) and a low-temperature zone (14) by a sealing plate (8), wherein the high-temperature zone (13) and the low-temperature zone (14) are both provided with a sealing door (11) and a sealing handle (12), wherein the inner walls of the high-temperature zone (13) and the low-temperature zone (14) are both provided with a temperature sensor (15), wherein a heating element (4) is provided inside the high-temperature zone (13), wherein the low-temperature zone (14) is connected to a refrigeration system (5), and wherein an adjusting device (3) is provided between the high-temperature zone (13) and the low-temperature zone (14) to control the movement of the hanging basket assembly (9); A control device (2) and a liquid nitrogen recovery device (6) installed via a mounting plate (61) are respectively provided on one side of the box body (1); the liquid nitrogen recovery device (6) is communicated with the low-temperature zone (14) via an exhaust pipe (65); the refrigeration system (5) is provided on one side of the box body (1) via a support plate (51); the refrigeration system (5) comprises a liquid nitrogen tank (52); and the liquid nitrogen tank (52) is connected to the low-temperature zone (14) via a discharge pipe (53).
2. The cold and hot shock incubator with a liquid nitrogen recovery device according to claim 1, characterized in that: The liquid nitrogen recovery device (6) comprises a filter device (7) connected to an exhaust pipe (65); the filter device (7) is connected to a condenser (62) via a conduit; the condenser (62) is fixed to one side of the box (1) via a mounting plate (61); a recovery pump (63) is connected to the bottom of the condenser (62); and the recovery pump (63) is connected to the liquid nitrogen tank (52) via a recovery pipe (64).
3. The cold and hot shock incubator with a liquid nitrogen recovery device according to claim 2, characterized in that: The filter device (7) comprises a filter box (71) connected to the exhaust pipe (65), the filter box (71) is provided with two groups of mounting openings (712) on the top, the two groups of mounting openings (712) are respectively provided with a filter plate (74) and an adsorption plate (75), the filter plate (74) and the adsorption plate (75) are provided with mounting handles (72) on the top and fit with the top of the filter box (71), and grooves (73) are provided on both sides of the mounting handles (72).
4. The hot and cold shock incubator with a liquid nitrogen recovery device according to claim 3, characterized in that: A guide groove (711) is provided inside the filter box (71), the bottoms of the filter plate (74) and the adsorption plate (75) are arc-shaped, and the outer walls are provided with a sealing sleeve (76), and the filter plate (74) and the adsorption plate (75) are fitted with the guide groove (711) through the sealing sleeve (76).
5. The cold and hot shock incubator with a liquid nitrogen recovery device according to claim 1, characterized in that: The regulating device (3) includes a motor (31) arranged on the top of the box (1), and a screw rod (32) and a slide rod (33) are respectively provided on both sides of the inside of the box (1), the screw rod (32) is connected to the output end of the motor (31), and a connecting seat (34) is respectively provided on the screw rod (32) and the slide rod (33), and the connecting seat (34) is fixedly connected to the hanging basket assembly (9) through a bolt (35).
6. The cold and hot shock incubator with a liquid nitrogen recovery device according to claim 1, characterized in that: The hanging basket assembly (9) comprises an upper connecting plate (92) and a lower connecting plate (91), a plurality of connecting rods (93) are provided between the upper connecting plate (92) and the lower connecting plate (91), and the upper connecting plate (92) and the lower connecting plate (91) are fixedly connected to the connecting seat (34) via bolts (35) on a side away from each other.
7. The hot and cold shock incubator with a liquid nitrogen recovery device according to claim 6, characterized in that: The sealing plate (8) is provided with a slot (81) that fits with the upper connecting plate (92) and the lower connecting plate (91), and the slot (81) is provided with a limit plate (82) that abuts against the upper connecting plate (92) and the lower connecting plate (91).