Liquid nitrogen quick-freezing device

Abstract

The utility model relates to a liquid nitrogen quick-freezing device which comprises a cabinet body, a storage assembly, a jacking assembly, a liquid nitrogen assembly and an exhaust assembly. The cabinet body is provided with a containing groove which is used for containing the storage assembly. The storage assembly comprises a storage rack and a tray; the storage rack is vertically provided with a storage plate, the tray is arranged on the storage plate, and a plurality of first air holes are formed in the tray; the jacking assembly is fixedly connected with the cabinet body, and the jacking assembly is used for penetrating through the first air hole to jack food; the liquid nitrogen assembly is externally connected with liquid nitrogen supply equipment and used for spraying liquid nitrogen into the containing groove. The exhaust assembly is used for exhausting gas in the containing groove. According to the food tray, the liquid nitrogen assembly sprays liquid nitrogen into the containing groove, and the liquid nitrogen is gasified to absorb heat so as to quickly freeze food on the tray; the jacking assembly penetrates through the first air holes of the tray and then jacks the food, so that the lower surface of the food is separated from the tray, or the food is jacked and moved, and therefore the freezing speed of the lower surface of the food is increased, and the food freezing uniformity is improved.

Description

Technical Field

[0001] The present application relates to the technical field of food processing, and in particular to a liquid nitrogen quick-freezing device. Background Art

[0002] During the processing of food (fruits, vegetables, meat, etc.), liquid nitrogen quick freezing devices can be used to freeze food. Liquid nitrogen quick freezing devices can achieve rapid freezing of food in a short time, with less damage to the food's organizational structure, and can maintain the original quality of the food to the greatest extent.

[0003] In the prior art, the liquid nitrogen quick freezing device includes a cabinet, a rack, a liquid nitrogen system and an exhaust system. The cabinet is provided with a receiving cavity for accommodating the rack, and the staff places the tray containing food on the rack, and a plurality of through holes are opened at the bottom of the tray. The liquid nitrogen system is used to spray liquid nitrogen into the receiving cavity, so as to quickly freeze the food through the gasification and heat absorption of liquid nitrogen. The exhaust system is used to discharge the nitrogen in the receiving cavity.

[0004] When liquid nitrogen is freezing food, the freezing speed is faster on the side of the food away from the tray, while the freezing speed is slower on the side of the food that is in contact with the tray due to the obstruction of the tray, thus affecting the uniformity of food freezing. Utility Model Content

[0005] In order to improve the uniformity of food freezing, the present application provides a liquid nitrogen quick-freezing device.

[0006] The present application provides a liquid nitrogen quick freezing device, which adopts the following technical solution:

[0007] A liquid nitrogen quick freezing device, comprising a cabinet, a storage assembly, a lifting assembly, a liquid nitrogen assembly and an exhaust assembly; the cabinet comprises a cabinet body and a cabinet door, the cabinet body is provided with a receiving groove, the cabinet door is used to seal the notch of the receiving groove, and the receiving groove is used to receive the storage assembly; the storage assembly comprises a storage rack and a tray; an avoidance gap is provided between the storage rack and the groove side wall of the receiving groove, the storage rack is vertically provided with a storage board, and a connecting hole is provided in the middle of the storage board; the tray is arranged on the storage board, and the tray is provided with a plurality of first air holes;

[0008] The lifting assembly includes a linear reciprocating drive member, a fixing rod, a fixing plate and a lifting column; the linear reciprocating drive member is fixedly connected to the cabinet body, and the linear reciprocating drive member is arranged between the slot side wall of the accommodating slot and the storage rack; the fixing rod is arranged vertically, and the fixing rod is fixedly connected to the driving end of the linear reciprocating drive member; the fixing plate is arranged horizontally, and the fixing plate is fixedly connected to the fixing rod, and the fixing plate is arranged at the bottom of the storage plate; the lifting columns are provided with a plurality of lifting columns, and the plurality of lifting columns are fixedly arranged on the side of the fixing plate close to the storage plate, and the lifting columns are sequentially penetrated through the connecting hole and the first air vent;

[0009] The liquid nitrogen component is externally connected to a liquid nitrogen supply device, and is used to spray liquid nitrogen into the containing tank; the exhaust component is used to exhaust the gas in the containing tank.

[0010] By adopting the above technical solution, the liquid nitrogen component sprays liquid nitrogen into the containing tank, and the liquid nitrogen vaporizes and absorbs heat to quickly freeze the food on the tray; the lifting component penetrates the first air hole of the tray and lifts the food to separate the lower surface of the food from the tray, or lifts and moves the food, thereby increasing the freezing speed of the lower surface of the food and improving the uniformity of food freezing.

[0011] Optionally, the liquid nitrogen assembly includes a plurality of delivery pipes and a plurality of nozzles; the plurality of delivery pipes are fixedly mounted on the side walls of the containing tank, and the delivery pipes are connected to a liquid nitrogen supply device; the plurality of nozzles are spaced apart along the length direction of the delivery pipes, and the nozzles are connected to the delivery pipes.

[0012] By adopting the above technical solution, through the cooperation of a plurality of delivery pipes and nozzles, the liquid nitrogen assembly sprays liquid nitrogen into the containing tank, thereby improving the uniformity of liquid spraying and improving the uniformity of food freezing in different areas.

[0013] Optionally, two of the linear reciprocating drive members and two of the fixing rods are provided, the fixing rods are arranged on both sides of the storage rack, and the fixing plate is fixed between the two fixing rods.

[0014] By adopting the above technical solution, the two linear reciprocating drive members and the fixing rod improve the stability of the movement of the fixing plate.

[0015] Optionally, a gap for gas circulation is provided between the lifting column and the first air vent.

[0016] By adopting the above technical solution, a gap for gas circulation is provided between the lifting column and the first air hole; thereby, liquid nitrogen particles can pass through the first air hole and contact the bottom of the food to improve the uniformity of freezing the upper and lower sides of the food.

[0017] Optionally, the fixing plate is an arc-shaped plate, and the opening direction of the fixing plate is arranged vertically downward.

[0018] By adopting the above technical solution, when the liquid nitrogen component sprays liquid nitrogen into the storage component, it is convenient for the liquid nitrogen particles to climb along the arc-shaped fixed plate, thereby improving the freezing effect of the food in the middle area of ​​the storage plate.

[0019] Optionally, the fixing plate is provided with a plurality of second air holes, and the second air holes are used for allowing gas to flow.

[0020] By adopting the above technical solution, the second air holes are used to supply cold air and liquid nitrogen particles to flow, thereby improving the uniformity of food freezing in different areas.

[0021] Optionally, the fixing plate is further provided with a limiting member, and when the tray abuts against the limiting member, the lifting column and the first air vent are located on the same vertical line.

[0022] By adopting the above technical solution, the tray is fixed to the designed position of the storage plate through the limiting member, thereby improving the accuracy of the alignment between the jacking column and the first air vent.

[0023] Optionally, the limiting member includes a first convex strip and a second convex strip, the first convex strip is arranged opposite to the cabinet door, and when the tray abuts against the first convex strip, the lifting column and the first air vent are located on the same vertical line; there are two second convex strips, and the two second convex strips are arranged on both sides of the first convex strip, and the tray is used to be slidably connected to the second convex strip.

[0024] By adopting the above technical solution, the tray can be fixed to the designed position of the storage plate through the cooperation between the first convex strip and the second convex strip, thereby improving the accuracy of the alignment between the jacking column and the first ventilation hole.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The liquid nitrogen component sprays liquid nitrogen into the containing tank, and the liquid nitrogen vaporizes and absorbs heat to quickly freeze the food on the tray; the lifting component penetrates the first air hole of the tray and lifts the food to separate the lower surface of the food from the tray, or lifts and moves the food, thereby increasing the freezing speed of the lower surface of the food and improving the uniformity of food freezing;

[0027] 2. When the liquid nitrogen component sprays liquid nitrogen into the storage component, it is convenient for the liquid nitrogen particles to climb along the arc-shaped fixed plate, thereby improving the freezing effect of the food in the middle area of ​​the storage plate;

[0028] 3. A gap for gas circulation is provided between the lifting column and the first air hole; thereby, liquid nitrogen particles can pass through the first air hole and contact the bottom of the food, so as to improve the uniformity of freezing of the upper and lower sides of the food. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of the structure of the liquid nitrogen quick freezing device in this embodiment.

[0030] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0031] Figure 3 It is a schematic diagram of the structure of the jacking assembly in this embodiment.

[0032] Figure 4 It is a schematic diagram of the structure of the storage component in this embodiment.

[0033] Figure 5 It is a schematic diagram showing the first state of the lifting assembly in this embodiment.

[0034] Figure 6 It is a schematic diagram reflecting the second state of the jacking assembly in this embodiment.

[0035] Explanation of the reference numerals: 1. cabinet; 11. cabinet body; 12. cabinet door; 13. containing tank; 2. liquid nitrogen assembly; 21. delivery pipe; 22. nozzle; 3. exhaust assembly; 4. storage assembly; 41. storage rack; 411. storage plate; 412. connecting hole; 42. tray; 421. first air hole; 5. lifting assembly; 51. linear reciprocating drive member; 52. fixing rod; 53. fixing plate; 531. second air hole; 54. lifting column; 6. limiting member; 61. first convex strip; 62. second convex strip; 7. liquid nitrogen supply equipment. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The present application embodiment discloses a liquid nitrogen quick freezing device. Figure 1 and Figure 2 The liquid nitrogen quick freezing device includes a cabinet 1, a liquid nitrogen component 2, an exhaust component 3, a storage component 4 and a lifting component 5.

[0038] Reference Figure 1 The cabinet 1 includes a cabinet body 11 and a cabinet door 12. The cabinet body 11 is provided with a receiving groove 13, which is used to receive the storage component 4, the lifting component 5 and the food to be frozen; one side of the cabinet door 12 is rotatably connected to the cabinet body 11, and the cabinet door 12 is used to seal the notch of the receiving groove 13.

[0039] Reference Figure 1 and Figure 2 The liquid nitrogen assembly 2 includes a plurality of delivery pipes 21 and a plurality of nozzles 22. The plurality of delivery pipes 21 are fixedly arranged on the side wall of the receiving tank 13 at intervals, and the delivery pipes 21 are externally connected to the liquid nitrogen supply device 7. The plurality of nozzles 22 are arranged at intervals along the length direction of the delivery pipes 21, and the nozzles 22 are connected to the delivery pipes 21. In this embodiment, the delivery pipes 21 are arranged on the side walls of the tank on both sides of the storage assembly 4, and the liquid nitrogen assembly 2 is used to spray liquid nitrogen into the receiving tank 13; thereby utilizing the gasification and heat absorption of liquid nitrogen to quickly freeze the food on the storage rack 41.

[0040] Reference Figure 1 In this embodiment, the exhaust assembly 3 is arranged opposite to the cabinet door 12, and the exhaust assembly 3 is arranged on the side wall of the receiving tank 13, and the exhaust assembly 3 is connected to the exhaust pipe, so as to discharge the nitrogen gasified in the receiving tank 13. In this embodiment, the exhaust assembly 3 is an exhaust fan.

[0041] Reference Figures 1 to 3 The storage component 4 includes a storage rack 41 and a tray 42. An avoidance gap is provided between the storage rack 41 and the delivery pipe 21, so as to facilitate the liquid nitrogen component 2 to spray liquid nitrogen to the storage component 4. The storage rack 41 is vertically provided with a storage plate 411, and a connecting hole 412 is provided in the middle of the storage plate 411. The tray 42 is arranged on the storage plate 411, and a plurality of first air holes 421 are opened on the tray 42. The tray 42 is used to hold food to be frozen (such as fruit and vegetable food such as strawberries and yam slices); so that when the tray 42 is arranged on the storage plate 411, air can circulate through the connecting holes 412 and the first air holes 421.

[0042] Reference Figure 3 and Figure 4 At the same time, a limiting member 6 is fixedly provided above the storage plate 411. In the present embodiment, the limiting member 6 includes a first convex strip 61 and a second convex strip 62. The first convex strip 61 is arranged opposite to the cabinet door 12, and the first convex strip 61 is used to limit the movement of the tray 42, so as to fix the tray 42 at the designed position. There are two second convex strips 62, and the two second convex strips 62 are arranged on both sides of the first convex strip 61. The tray 42 is used to be slidably connected with the second convex strip 62, and the second convex strip 62 plays a guiding and limiting role. Therefore, through the mutual cooperation between the first convex strip 61 and the second convex strip 62, the tray 42 can be fixed at the designed position of the storage plate 411. In the present embodiment, the first convex strip 61 is a magnetic strip, and the tray 42 is an iron tray 42, so that the first convex strip 61 and the tray 42 are attracted to each other, so as to further improve the accuracy of the installation position of the tray 42.

[0043] Reference Figure 2 and Figure 3 The lifting assembly 5 includes a linear reciprocating drive member 51, a fixing rod 52, a fixing plate 53 and a lifting column 54.

[0044] Reference Figure 2 and Figure 3 In this embodiment, the linear reciprocating drive member 51 is a cylinder, and two linear reciprocating drive members 51 are provided, and the two linear reciprocating drive members 51 are arranged on both sides of the storage component 4. The linear reciprocating drive member 51 is fixed on the cabinet body 11 at the top of the accommodating groove 13, and the driving direction of the linear reciprocating drive member 51 is the vertical direction.

[0045] Reference Figure 2 and Figure 3 , the fixed rod 52 is fixedly connected to the driving end of the linear reciprocating driving member 51, so that the linear reciprocating driving member 51 drives the fixed rod 52 to move up and down. A plurality of fixed plates 53 are arranged vertically at intervals, the fixed plates 53 are arranged horizontally, and the fixed plates 53 are fixedly connected to the fixed rod 52, and the fixed plates 53 are arranged at the bottom of the storage plate 411; the number of fixed plates 53 is the same as the number of storage plates 411. In this embodiment, the fixed plate 53 is an arc-shaped plate, and the opening direction of the fixed plate 53 is arranged vertically downward; so that when the liquid nitrogen component 2 sprays liquid nitrogen into the storage component 4, it is convenient for the liquid nitrogen particles to climb along the arc-shaped fixed plate 53, so that the liquid nitrogen particles flow to the middle area of ​​the storage component 4, thereby improving the freezing effect of the food in the middle area of ​​the storage plate 411. At the same time, the fixed plate 53 is provided with a plurality of second air holes 531, and the second air holes 531 are used to supply cold air and liquid nitrogen particles to flow; thereby improving the uniformity of food freezing in different areas.

[0046] Reference Figures 2 to 4 , there are a plurality of lifting columns 54, and the plurality of lifting columns 54 are fixedly arranged on the side of the fixed plate 53 close to the storage plate 411. When the first convex strip 61 and the second convex strip 62 fix the tray 42 at the designed position, the lifting columns 54 and the first air holes 421 are located on the same vertical line. The number of the lifting columns 54 can be less than the number of the first air holes 421, or the number of the lifting columns 54 can be consistent with the number of the first air holes 421; in this embodiment, the number of the lifting columns 54 is consistent with the number of the first air holes 421. When the linear reciprocating drive member 51 drives the fixed plate 53 to move upward, the lifting columns 54 are sequentially arranged in the connecting hole 412 and the first air hole 421; so that the lifting columns 54 contact the food above the first air hole 421, so that the lifting columns 54 lift the food a short distance, or move the food to the periphery a short distance; so that the sprayed liquid nitrogen particles are easy to contact with the bottom of the food. At the same time, in this embodiment, a gap for gas circulation is provided between the lifting column 54 and the first air hole 421; thereby, liquid nitrogen particles can pass through the first air hole 421 and contact the bottom of the food to increase the freezing speed of the bottom of the food; thereby achieving the effect of improving the freezing uniformity of the upper and lower surfaces of the food.

[0047] The implementation principle of a liquid nitrogen quick freezing device in the embodiment of the present application is:

[0048] Reference Figure 5 and Figure 6 The staff installs the tray 42 on the storage plate 411 and allows a gap between the fixing plate 53 and the storage plate 411 for the liquid particles to flow. The liquid nitrogen assembly 2 sprays liquid nitrogen into the receiving tank 13, and the liquid nitrogen vaporizes and absorbs heat to quickly freeze the food on the tray 42.

[0049] Reference Figure 5 and Figure 6 When the food in the tray 42 is frozen to a certain degree, the linear reciprocating driving member 51 in the lifting assembly 5 drives the fixed plate 53 to move upward, so that the lifting column 54 penetrates the first air hole 421 of the tray 42 and lifts the food, so that the lower surface of the food is separated from the tray 42, or the position of the food is lifted and moved, thereby increasing the freezing speed of the lower surface of the food and improving the uniformity of food freezing.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid nitrogen quick freezing device, characterized in that: The invention comprises a cabinet (1), a storage component (4), a lifting component (5), a liquid nitrogen component (2) and an exhaust component (3); the cabinet (1) comprises a cabinet body (11) and a cabinet door (12); the cabinet body (11) is provided with a receiving groove (13); the cabinet door (12) is used to seal the notch of the receiving groove (13); the receiving groove (13) is used to receive the storage component (4); the storage component (4) comprises a storage rack (41) and a tray (42); the storage rack (41 ) and a side wall of the receiving groove (13); the storage rack (41) is vertically provided with a storage plate (411), and a connecting hole (412) is provided in the middle of the storage plate (411); the tray (42) is arranged on the storage plate (411), and the tray (42) is provided with a plurality of first air holes (421); the lifting assembly (5) comprises a linear reciprocating drive member (51), a fixing rod (52), a fixing plate (53) and a lifting column (54); the linear The reciprocating drive member (51) is fixedly connected to the cabinet body (11); the linear reciprocating drive member (51) is arranged between the groove side wall of the accommodating groove (13) and the storage rack (41); the fixing rod (52) is arranged vertically, and the fixing rod (52) is fixedly connected to the driving end of the linear reciprocating drive member (51); the fixing plate (53) is arranged horizontally, and the fixing plate (53) is fixedly connected to the fixing rod (52); the fixing plate (53) is arranged on the storage plate (41); 1) bottom; a plurality of lifting columns (54) are provided, the plurality of lifting columns (54) are fixedly arranged on a side of the fixing plate (53) close to the storage plate (411), and the lifting columns (54) are sequentially penetrated through the connecting hole (412) and the first air hole (421); the liquid nitrogen component (2) is externally connected to a liquid nitrogen supply device (7), and the liquid nitrogen component (2) is used to spray liquid nitrogen into the containing tank (13); and the exhaust component (3) is used to exhaust gas in the containing tank (13).

2. The liquid nitrogen quick freezing device according to claim 1, characterized in that: The liquid nitrogen assembly (2) comprises a plurality of delivery pipes (21) and a plurality of nozzles (22); the plurality of delivery pipes (21) are fixedly mounted on the side wall of the containing tank (13), and the delivery pipes (21) are connected to the liquid nitrogen supply device (7); the plurality of nozzles (22) are arranged at intervals along the length direction of the delivery pipes (21), and the nozzles (22) are in communication with the delivery pipes (21).

3. The liquid nitrogen quick freezing device according to claim 1, characterized in that: Two of the linear reciprocating drive members (51) and two of the fixing rods (52) are provided. The fixing rods (52) are arranged on both sides of the storage rack (41), and the fixing plate (53) is fixed between the two fixing rods (52).

4. The liquid nitrogen quick freezing device according to claim 1, characterized in that: A gap for gas circulation is provided between the lifting column (54) and the first air vent (421).

5. The liquid nitrogen quick freezing device according to claim 1, characterized in that: The fixing plate (53) is an arc-shaped plate, and the opening direction of the fixing plate (53) is arranged vertically downward.

6. The liquid nitrogen quick freezing device according to claim 1, characterized in that: The fixing plate (53) is provided with a plurality of second air holes (531), and the second air holes (531) are used for allowing gas to flow.

7. The liquid nitrogen quick freezing device according to claim 1, characterized in that: The fixing plate (53) is also fixedly provided with a limiting member (6), and when the tray (42) is in contact with the limiting member (6), the lifting column (54) and the first air hole (421) are located on the same vertical line.

8. The liquid nitrogen quick freezing device according to claim 7, characterized in that: The limiting member (6) comprises a first convex strip (61) and a second convex strip (62), wherein the first convex strip (61) is arranged opposite to the cabinet door (12), and when the tray (42) abuts against the first convex strip (61), the lifting column (54) and the first air vent (421) are located on the same vertical line; two second convex strips (62) are provided, and the two second convex strips (62) are arranged on both sides of the first convex strip (61), and the tray (42) is used for being slidably connected with the second convex strip (62).

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