Ultrasonic-assisted liquid nitrogen-nitrogen-air mixed regulation ultralow-temperature freezing device

Abstract

The utility model discloses an ultrasonic-assisted liquid nitrogen-nitrogen-air mixed regulation ultralow-temperature freezing device, which relates to the field of freezing equipment and comprises a storage body, an ultrasonic generator is fixedly mounted on the upper surface of the storage body, a freezing frame and a nitrogen pipeline are arranged in the storage body, and a universal valve is mounted at an air inlet of the nitrogen pipeline. The universal valve is connected with the mixing device, a temperature sensor is mounted at the top of the mixing device, and a three-way valve is mounted at an air inlet of the mixing device and connected with a liquid nitrogen tank and an air storage tank. According to the liquid nitrogen-nitrogen-air mixed medium flow regulation and control device, the overall energy consumption of freezing equipment is reduced under the assistance of the ultrasonic generator, food freezing storage is carried out in an economical and environment-friendly mode, and on the basis that the original flavor of food is kept to the maximum extent, the energy consumption of the freezing equipment is reduced. And the food freezing efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the field of refrigeration equipment, in particular to an ultrasonic-assisted liquid nitrogen-nitrogen-air mixed control ultra-low temperature refrigeration device. Background Art

[0002] Liquid nitrogen quick freezing can produce a very high freezing rate, forming small and uniform ice crystals in the food tissue, and the food can maintain its original flavor and color to the greatest extent. Ultrasonic waves can promote the formation of ice crystal nuclei during the freezing process, control the size of ice crystals, shorten the freezing time, and improve the quality of food freezing.

[0003] The relevant Chinese patent with announcement number CN216853591U discloses a liquid nitrogen freezer with convenient storage, which includes a storage body, a freezing mechanism, a frame inside the storage body, a conveyor belt rotatably connected to the upper end of the frame, a feed port at one end of the storage body, and one end of the frame passes through the feed port of the storage body.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when using the above-mentioned liquid nitrogen freezer to freeze food, liquid nitrogen is sprayed directly onto the surface of the food through an atomizing nozzle. This freezing method may cause damage to the food tissue structure, reduce the freezing quality of the food, and the liquid nitrogen consumption is high during the freezing process. Utility Model Content

[0005] The utility model aims to provide an ultrasonic-assisted liquid nitrogen-nitrogen-air mixed control ultra-low temperature freezing device to solve the problems of liquid nitrogen spraying causing damage to food tissue structure and high liquid nitrogen consumption during freezing proposed in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The invention discloses an ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device, comprising a storage body, an ultrasonic generator is fixedly mounted on the upper surface of the storage body, an ultrasonic controller and a temperature display are mounted on the rear surface of the storage body, a driving wheel is fixedly mounted on the bottom of the storage body, a freezing rack and a nitrogen pipeline are arranged inside the storage body, a universal valve is mounted on the air inlet of the nitrogen pipeline, the universal valve is connected to a mixing device, a temperature sensor is mounted on the top of the mixing device, and a three-way valve is mounted at the air inlet of the mixing device to connect a liquid nitrogen tank and an air storage tank.

[0008] Preferably, the ultrasonic generator is located on the upper surface of the storage body, and the ultrasonic controller is electrically connected to the ultrasonic generator.

[0009] Preferably, the liquid nitrogen tank and the air storage tank are respectively located on one side of the storage body, the liquid nitrogen tank and the air storage tank are connected to the mixing device through a cooling pipe, and the flow control valve regulates the flow of liquid nitrogen and compressed air output by the liquid nitrogen tank and the air storage tank.

[0010] Preferably, a temperature sensor is installed on the top of the mixing device, a universal valve is installed at the exhaust port of the mixing device, and the temperature sensor is electrically connected to the temperature display.

[0011] Preferably, a freezing rack and a nitrogen pipeline are provided inside the storage body, and a tray is placed on the freezing rack.

[0012] Preferably, the warehouse body is hinged to the warehouse door through a hinge, a sealing ring is arranged between the warehouse door and the warehouse body, and the sealing ring is fixedly connected to the inner layer of the warehouse door.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model adopts a liquid nitrogen-nitrogen-air mixed medium flow control device, which combines the advantages of liquid nitrogen and air. On the basis of having great freezing efficiency, it not only makes the freezing temperature easier to control, reduces the temperature gradient, and avoids damage to the food tissue structure, but also reduces the dependence on liquid nitrogen to a certain extent, achieving more economical and environmentally friendly operation.

[0015] The utility model is provided with an ultrasonic generator, which increases the heat transfer surface area between the cryogenic nitrogen and the food through ultrasonic assistance, improves the uniformity of the distribution of the cryogenic nitrogen, and further improves the freezing efficiency and quality. In addition, ultrasonic assistance can also improve the heat transfer efficiency, reduce the dependence on cryogenic nitrogen during the freezing process, and reduce the overall energy consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] Figure 2 It is a rear view of the utility model.

[0018] Figure 3 It is a partial schematic diagram of the storage body of the utility model.

[0019] Figure 4 It is a partial schematic diagram of the warehouse door of the utility model.

[0020] In the figure: 1. warehouse body; 2. ultrasonic controller; 3. ultrasonic generator; 4. temperature display; 5. temperature sensor; 6. universal valve; 7. cooling pipe; 8. flow control valve; 9. liquid nitrogen tank; 10. driving wheel; 11. mixing device; 12. three-way valve; 13. air storage tank; 14. freezing rack; 15. nitrogen pipeline; 16. hinge; 17. sealing ring; 18. warehouse door; 20. pallet. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below according to the accompanying drawings and embodiments:

[0022] See also Figure 1-3 The utility model provides an ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device, comprising a storage body 1, an ultrasonic generator 3 is fixedly installed on the upper surface of the storage body 1, an ultrasonic controller 2 and a temperature display 4 are installed on the rear surface of the storage body 1, a driving wheel 10 is fixedly installed on the bottom of the storage body, a freezing rack 14 and a nitrogen pipeline 15 are arranged inside the storage body 1, a universal valve 6 is installed at the air inlet of the nitrogen pipeline 15, the universal valve 6 is connected to a mixing device 11, a temperature sensor 5 is installed on the top of the mixing device 11, and a three-way valve 12 is installed at the air inlet of the mixing device 11 to connect a liquid nitrogen tank 9 and an air storage tank 13.

[0023] In this embodiment, if Figure 1 As shown, the ultrasonic generator 3 is located on the upper surface of the storage body 1 , and the ultrasonic controller 2 is electrically connected to the ultrasonic generator 3 .

[0024] In this embodiment, if Figure 2 As shown, the liquid nitrogen tank 9 and the air storage tank 13 are each located on one side of the storage body 1, and the liquid nitrogen tank 9 and the air storage tank 13 are connected to the mixing device 11 through the cooling pipe 7, and the flow control valve 8 regulates the flow of liquid nitrogen and compressed air output by the liquid nitrogen tank 9 and the air storage tank 13.

[0025] In this embodiment, if Figure 2 As shown, a temperature sensor 5 is fixedly installed on the top of the mixing device 11, a universal valve 6 is installed at the exhaust port of the mixing device 11, and the temperature sensor 5 is electrically connected to the temperature display 4.

[0026] In this embodiment, if Figure 3 As shown, a freezing rack 14 and a nitrogen pipeline 15 are provided inside the storage body 1 , and a tray 20 is placed on the freezing rack 14 .

[0027] In this embodiment, if Figure 3-4 As shown, the storage body 1 is hinged to the storage door 18 via a hinge 16 , a sealing ring 17 is arranged between the storage door 18 and the storage body 1 , and the sealing ring 17 is fixedly connected to the inner layer of the storage door 18 .

[0028] The implementation principle of the ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device of the present application embodiment is as follows: when food needs to be frozen, the door 18 is opened, the tray 20 is pulled out, the food to be frozen is placed on the tray 20, and then the tray 20 is put back on the freezing rack 14, the door 18 is closed, the flow control valve 8 is opened, and the liquid nitrogen and compressed air enter the mixing device 11 through the cooling pipe 7. The opening of the flow control valve 8 is adjusted, and the low-temperature nitrogen in the mixing device 11 gradually approaches the optimal temperature required for food freezing. It is observed through the temperature display 4. After the temperature reaches the optimal freezing standard, the universal valve 6 is opened, and the low-temperature nitrogen enters the storage body 1 through the nitrogen pipeline 15 to freeze the food to be frozen. Before the universal valve 6 is opened, the frequency, power and other parameters of the ultrasonic generator 3 are adjusted on the ultrasonic controller 2 according to the different foods to be frozen, so as to assist in completing the freezing of the food.

Claims

1. A liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device with ultrasonic assistance, comprising a storage body (1), characterized in that: An ultrasonic generator (3) is fixedly mounted on the upper surface of the storage body (1), an ultrasonic controller (2) and a temperature display (4) are mounted on the rear surface of the storage body (1), a driving wheel (10) is fixedly mounted on the bottom of the storage body (1), a freezing rack (14) and a nitrogen pipeline (15) are arranged inside the storage body (1), a universal valve (6) is mounted at the air inlet of the nitrogen pipeline (15), the universal valve (6) is connected to a mixing device (11), a temperature sensor (5) is mounted on the top of the mixing device (11), and a three-way valve (12) is mounted at the air inlet of the mixing device (11) to connect to a liquid nitrogen tank (9) and an air storage tank (13).

2. The ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device according to claim 1, characterized in that: The ultrasonic generator (3) is located on the upper surface of the storage body (1), and the ultrasonic controller (2) is electrically connected to the ultrasonic generator (3).

3. The ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device according to claim 1, characterized in that: The liquid nitrogen tank (9) and the air storage tank (13) are each located on one side of the storage body (1); the liquid nitrogen tank (9) and the air storage tank (13) are connected to the mixing device (11) via a cooling pipe (7); and the flow control valve (8) regulates the flow of liquid nitrogen and compressed air output by the liquid nitrogen tank (9) and the air storage tank (13).

4. The ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device according to claim 1, characterized in that: A temperature sensor (5) is installed on the top of the mixing device (11), a universal valve (6) is installed at the exhaust port of the mixing device (11), and the temperature sensor (5) is electrically connected to the temperature display (4).

5. The ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device according to claim 1, characterized in that: A freezing rack (14) and a nitrogen pipeline (15) are arranged inside the storage body (1), and a tray (20) is placed on the freezing rack (14).

6. The ultrasonic-assisted liquid nitrogen-nitrogen-air mixing control ultra-low temperature freezing device according to claim 1, characterized in that: The storage body (1) is hingedly connected to a storage door (18) via a hinge (16); a sealing ring (17) is arranged between the storage door (18) and the storage body (1); and the sealing ring (17) is fixedly connected to the inner layer of the storage door (18).

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