Phase change cooling fresh-keeping device for fruits

Abstract

The invention relates to the technical field of fruit preservation, and discloses a fruit phase change cooling preservation device which comprises a preservation box, a cold source conveying mechanism for providing a cold source for fruit preservation is arranged on the upper section of the interior of the preservation box, and a fruit containing mechanism with the height capable of being adjusted is arranged on the middle section of the interior of the preservation box. The metal phase change cold plate is internally provided with fins and filled with low-temperature phase change materials, and adjustable supporting frames are further installed at the four corners in the preservation box. The height of the top cold source conveying mechanism is adjusted through the adjustable supporting frame, fruits are convenient to take and place, at least one phase change supporting plate is arranged in the middle section of the interior of the preservation box and used for separating a fruit containing space, and the position height of the phase change supporting plate can be adjusted through the limiting mechanism; multiple layers of fruits can be conveniently placed, the height of the fruits can be conveniently adjusted according to the sizes of the fruits, the applicability of the device is improved, air holes in the phase change supporting plates facilitate circulation of cold air, and the fruit refrigeration effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of fruit preservation, in particular to a phase change cooling and preservation device for fruits. Background Art

[0002] The main purpose of fruit preservation is to extend the storage period of fruit and maintain its freshness. The core of fruit preservation lies in controlling the physiological activities of fruit and the reproduction of microorganisms. Refrigerated preservation of fruit uses low temperature to inhibit the respiration of fruit and the reproduction of microorganisms.

[0003] After searching, the patent with application number CN202220891259.X discloses a fresh-keeping transfer box for organic fruit transportation, which relates to the field of fruit fresh-keeping transfer technology, including a fruit fresh-keeping transporter, the fruit fresh-keeping transporter includes a low-temperature fresh-keeping device, a fruit placement box is movably overlapped on the top outer surface of the low-temperature fresh-keeping device, an exhaust fan is detachably installed on the lower outer surface of both sides of the low-temperature fresh-keeping device, and a cooler is arranged inside the low-temperature fresh-keeping device. The utility model uses an exhaust fan to inhale air, cooperates with the cooler to cool it, guides the cooled air to the inside of the air duct, and then uses an atomizing nozzle to atomize and discharge it, and then insulates the outer surface of the air duct through a heat-insulating filling layer, which has the characteristics of cooling the fruit inside the truck cabinet, solves the problem that high temperature will increase the temperature inside the container, and the fruit is very easy to rot in a stuffy environment, and achieves the effect of cooling the fruit inside the truck cabinet.

[0004] Current fruit preservation devices generally use ice bags, ice plates, etc. for cooling, which have slow heat dissipation speed, weak wrapping, and are not convenient for placing multiple layers of fruit inside the fresh-keeping box. Even if multiple layers of fruit are placed, it is not convenient to adjust the height of each layer of fruit placement space according to the size of the fruit, which will lead to poor air permeability between the upper and lower layers of fruit, and poor circulation of cold air between the fruits, which can easily cause damage to the fruit. Therefore, we need to propose a phase change cooling and preservation device for fruit. Summary of the invention

[0005] The object of the present invention is to provide a phase change cooling and preservation device for fruits, which utilizes metal phase change crystal cells combined with air cooling for active cooling, has fast cooling speed and strong wrapping, and uses an adjustable support frame to adjust the height of the top cold source conveying mechanism, which is convenient for taking and placing fruits, and at least one phase change support plate is arranged in the middle section inside the fresh-keeping box to separate the fruit placement space, and the position height of the phase change support plate can be adjusted by a limiting mechanism, which is convenient for placing multiple layers of fruits and adjusting the layer height according to the size of the fruits, thereby increasing the applicability of the device, and the air holes on the phase change support plate facilitate the circulation of cold air, thereby ensuring the refrigeration effect of the fruits, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a phase change cooling and fresh-keeping device for fruits, comprising a fresh-keeping box, wherein the upper section of the fresh-keeping box is provided with a cold source conveying mechanism for providing a cold source for fruit preservation, the middle section of the fresh-keeping box is provided with a fruit placing mechanism with adjustable layer height, the lower section of the fresh-keeping box is provided with a metal phase change cold plate, the metal phase change cold plate is provided with ribs and filled with low-temperature phase change material, and the four corners of the fresh-keeping box are also provided with adjustable support frames for adjusting the height of the cold source conveying mechanism;

[0007] The cold source conveying mechanism comprises a top cover, the bottom of the top cover is connected to a soft bottom pocket, and a plurality of metal phase change crystal cells are arranged in the space between the top cover and the bottom pocket;

[0008] The fruit placement mechanism comprises at least one phase change support plate, the phase change support plate is provided with air holes for convenient passage of cold air, and the phase change support plate is filled with low-temperature phase change material.

[0009] Preferably, a fan is installed at the inner top of the top cover, an air inlet aligned with the position of the fan is opened on the surface of the top cover, and a plurality of the metal phase change cells are filled with low-temperature phase change material.

[0010] Preferably, the adjustable support frame includes two first support columns and two second support columns installed at the four corners inside the fresh-keeping box, and the top ends of the first support columns and the second support columns are movably provided with connecting blocks.

[0011] Preferably, the upper ends of the adjacent two side walls on the connecting block are provided with card slots, the four corners of the top cover are provided with notches, the inner walls of the notches are connected with card blocks, and the card blocks are carded in the inside of the card slots.

[0012] Preferably, a first cavity is provided inside the first support column, a screw is rotatably installed inside the first cavity, a threaded ring is threadedly connected to the outer wall of the screw, wherein the bottoms of the two connecting blocks are connected to a limiting rod, and the bottom ends of the limiting rods are connected to the threaded ring.

[0013] Preferably, a limiting hole connected to the first cavity is also formed at the top of the first support column, the limiting rod is inserted into the limiting hole, a motor is installed at the bottom of the first support column, and one end of the output shaft of the motor is connected to the bottom of the screw rod.

[0014] Preferably, a second cavity is provided inside the second support column, and a polished rod is connected to the bottom of the other two connection blocks, and the polished rod is slidably installed inside the second cavity.

[0015] Preferably, a second notch is formed on the inner wall of the fresh-keeping box, and a convex block is integrally formed on the end of the phase change support plate, and the convex block is slidably installed inside the second notch.

[0016] Preferably, the outer wall of the fresh-keeping box is provided with a limiting mechanism for limiting the phase change support plate, the outer wall of the fresh-keeping box is provided with a first notch, the limiting mechanism includes a connecting plate slidably installed inside the first notch, a through hole is provided on the connecting plate, a positioning column is movably installed inside the through hole, and a spring is connected between the side wall of the positioning column and the connecting plate.

[0017] Preferably, a through hole connecting the first notch and the second notch is provided on the side wall of the fresh-keeping box, a limiting groove is provided on the protrusion, and one end of the positioning column passes through the through hole and is inserted into the limiting groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention places metal phase change crystal cells with large heat exchange surface and strong thermal conductivity in a soft bag to tightly wrap the fruit, uses air cooling for active top cooling, and combines a phase change support plate and a metal phase change cold plate to cool the bottom of the fruit, thereby greatly increasing the contact area between the cold source and the fruit and significantly improving the cooling speed of the fruit.

[0020] 2. The present invention uses an adjustable support frame to adjust the height of the top cold source conveying mechanism, which is convenient for taking and placing fruits, and at least one phase change support plate is set in the middle section of the fresh-keeping box to separate the fruit placement space to prevent damage caused by stacking a large number of fruits, and the position height of the phase change support plate can be adjusted by a limiting mechanism, which is convenient for placing multiple layers of fruits and adjusting the layer height according to the size of the fruits, thereby increasing the applicability of the device, and the air holes on the phase change support plate facilitate the circulation of cold air to ensure the refrigeration effect of the fruits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 An exploded view of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the cold source conveying mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the adjustable support frame of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the phase change support plate of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the metal phase change cold plate of the present invention;

[0027] Figure 7 For the present invention Figure 5 Enlarged view of part A in the middle.

[0028] In the figure: 1. fresh-keeping box; 11. exhaust outlet; 12. first notch; 13. second notch; 14. through hole; 2. cold source conveying mechanism; 21. top cover; 22. air inlet; 23. clamping block; 24. bottom pocket; 25. metal phase change unit cell; 26. fan; 3. adjustable support frame; 31. first support column; 32. first cavity; 33. limiting hole; 34. motor; 35. screw rod; 351. threaded ring; 36. limiting rod; 37. connecting block; 38. clamping slot; 39. second support column; 310. second cavity; 311. bare rod; 4. limiting mechanism; 41. connecting plate; 42. through hole; 43. positioning column; 44. spring; 5. metal phase change cold plate; 51. rib; 6. phase change support plate; 61. bump; 62. limiting slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 The present invention provides a technical solution: a phase-change cooling and fresh-keeping device for fruits, comprising a fresh-keeping box 1, wherein the upper section of the fresh-keeping box 1 is provided with a cold source conveying mechanism 2 for providing a cold source for fruit preservation, and the middle section of the fresh-keeping box 1 is provided with a fruit placing mechanism with adjustable layer height, wherein the fruit placing mechanism is provided with multiple layers of space for placing fruits, and the height of each layer of fruit placing space is adjustable, so as to facilitate the placement of fruits of different sizes;

[0031] Air outlets 11 are provided at both ends of the fresh-keeping box 1 .

[0032] A metal phase change cold plate 5 is installed in the lower section of the fresh-keeping box 1. The metal phase change cold plate 5 is provided with ribs 51 and filled with low-temperature phase change material, that is, low-temperature phase change material is provided between the ribs 51. The ribs 51 can enhance the heat exchange capacity and improve the supporting force of the metal phase change cold plate 5. Adjustable support frames 3 for adjusting the height of the cold source conveying mechanism 2 are also installed at the four corners of the fresh-keeping box 1, so that the bottom of the cold source conveying mechanism 2 can fit the fruit;

[0033] During specific adjustment, the motor 34 drives the screw rod 35 to rotate, and the screw rod 35 drives the threaded ring 351 threaded thereon to move upward, and then the two connecting blocks 37 can be driven to move upward through the limit rod 36, and the other two connecting blocks 37 are moved upward by the lifting of the light rod 311. The four connecting blocks 37 drive the top cover 21 of the cold source conveying mechanism 2 to move upward, so that the bottom pocket 24 can be moved upward, so that the bottom pocket 24 can be attached to the surface of the fruit.

[0034] The cold source conveying mechanism 2 comprises a top cover 21, the bottom of which is connected with a soft bottom pocket 24, that is, the bottom pocket 24 can be deformed to facilitate the fit with the fruit, and a plurality of metal phase change cells 25 are arranged in the space between the top cover 21 and the bottom pocket 24, and a plurality of the metal phase change cells 25 are filled with low temperature phase change materials;

[0035] The fruit placement mechanism comprises at least one phase change support plate 6, on which air holes are provided for the passage of cold air, so that the cold air can be transferred in the fruit placement spaces at different layers.

[0036] The fruits are placed on the metal phase change cold plate 5 and the phase change support plate 6. The different heights of the phase change support plate 6 can be adjusted according to the multiple through holes 14 to accommodate the placement of fruits of different sizes.

[0037] A fan 26 is installed at the inner top of the top cover 21 , and an air inlet 22 aligned with the position of the fan is opened on the surface of the top cover 21 .

[0038] The metal phase change unit cell 25 can be set to any one of a body-centered cubic unit cell, a face-centered cubic unit cell, and a close-packed hexagonal unit cell, and the low-temperature phase change material is selected from one of an inorganic phase change material, an organic phase change material, and a composite phase change material.

[0039] The adjustable support frame 3 includes two first support columns 31 and two second support columns 39 installed at the four corners of the fresh-keeping box 1. The tops of the first support columns 31 and the second support columns 39 are movably provided with connecting blocks 37, that is, the connecting blocks 37 can be raised and lowered.

[0040] A card slot 38 is provided at the upper end of the adjacent two side walls of the connecting block 37 . The connecting block 37 is made of an iron block. Notches are provided at the four corners of the top cover 21 . The inner wall of the notch is connected to a card block 23 . The card block 23 is a magnetic card block and is snapped into the inside of the card slot 38 .

[0041] When the connection block 37 is in contact with the top of the first support column 31 / the second support column 39 , the top of the connection block 37 is flush with the surface of the fresh-keeping box 1 .

[0042] A first cavity 32 is provided inside the first support column 31, and a screw rod 35 is rotatably installed inside the first cavity 32. A threaded ring 351 is threadedly connected to the outer wall of the screw rod 35, wherein the bottoms of the two connecting blocks 37 are connected to a limiting rod 36, and the bottom ends of the limiting rod 36 are connected to the threaded ring 351. The cooperation between the limiting rod 36 and the limiting hole 33 can ensure the stable lifting and lowering of the threaded ring 351.

[0043] The top of the first support column 31 is also provided with a limiting hole 33 connected to the first cavity 32, and the limiting rod 36 is inserted into the limiting hole 33. The bottom of the first support column 31 is provided with a motor 34, and one end of the output shaft of the motor 34 is connected to the bottom of the screw rod 35. Specifically, the bottom of the first support column 31 is provided with a mounting groove, and the motor 34 is mounted inside the mounting groove.

[0044] A second cavity 310 is disposed inside the second support column 39 , and a polished rod 311 is connected to the bottom of the other two connection blocks 37 . The polished rod 311 is slidably installed inside the second cavity 310 .

[0045] The inner wall of the fresh-keeping box 1 is provided with a second notch 13 , and the end of the phase-change support plate 6 is integrally formed with a protrusion 61 , which is slidably mounted inside the second notch 13 .

[0046] The outer wall of the fresh-keeping box 1 is provided with a limiting mechanism 4 for limiting the phase change support plate 6. The outer wall of the fresh-keeping box 1 is provided with a first notch 12. The limiting mechanism 4 includes a connecting plate 41 slidably installed inside the first notch 12. A through hole 42 is provided on the connecting plate 41. A positioning column 43 is movably installed inside the through hole 42. A spring 44 is connected between the side wall of the positioning column 43 and the connecting plate 41.

[0047] A through hole 14 connecting the first notch 12 and the second notch 13 is provided on the side wall of the fresh-keeping box 1. A plurality of through holes 14 are arranged at equal vertical intervals. A limiting groove 62 is provided on the protrusion 61. One end of the positioning column 43 passes through the through hole 14 and is inserted into the inside of the limiting groove 62.

[0048] After placing the phase change support plate 6 into the fresh-keeping box 1, align the limiting groove 62 with the through hole 14 of the specified height, pull the positioning column 43, and the end of the positioning column 43 returns to the inside of the through hole 42, and slide the connecting plate 41 inside the first notch 12 to align the through hole 42 with the through hole 14 of the specified height, then release the positioning column 43, and under the elastic force of the spring 44, push the end of the positioning column 43 into the limiting groove 62 to complete the positioning of the phase change support plate 6.

[0049] When in use, the top cover 21 is removed, and according to the requirements of fruit preservation, 1-2 phase change support plates 6 are installed in the fresh-keeping box 1, and the distance between two adjacent phase change support plates 6 and the distance between the phase change support plate 6 and the metal phase change cold plate 5 are adjusted according to the size of the fruit, and then the fruit is placed on the metal phase change cold plate 5 and the phase change support plate 6, and the cold source conveying mechanism 2 is placed on the upper inner section of the fresh-keeping box 1, so that the card block 23 is magnetically adsorbed inside the card slot 38;

[0050] Then the cold source conveying mechanism 2 is lifted, the motor 34 drives the screw rod 35 to rotate, the screw rod 35 drives the threaded ring 351 threadedly connected thereon to move upward, and then the two connecting blocks 37 can be driven to move upward through the limit rod 36, and the other two connecting blocks 37 are moved upward by the lifting of the light rod 311, and the four connecting blocks 37 drive the top cover 21 of the cold source conveying mechanism 2 to move upward, so that the bottom pocket 24 can be moved upward, and the bottom pocket 24 can be made to fit the surface of the fruit.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A phase change cooling and fresh-keeping device for fruits, comprising a fresh-keeping box (1), characterized in that: The upper section of the fresh-keeping box (1) is provided with a cold source conveying mechanism (2) for providing a cold source for fruit preservation, the middle section of the fresh-keeping box (1) is provided with a fruit placing mechanism with an adjustable layer height, the lower section of the fresh-keeping box (1) is provided with a metal phase change cold plate (5), the metal phase change cold plate (5) is provided with ribs (51) inside and filled with low-temperature phase change material, and the four corners of the fresh-keeping box (1) are also provided with adjustable support frames (3) for adjusting the height of the cold source conveying mechanism (2); The cold source conveying mechanism (2) comprises a top cover (21), the bottom of the top cover (21) is connected to a soft bottom pocket (24), and a plurality of metal phase change cells (25) are arranged in the space between the top cover (21) and the bottom pocket (24); The fruit placement mechanism comprises at least one phase change support plate (6), the phase change support plate (6) is provided with air holes for facilitating the passage of cold air, and the phase change support plate (6) is filled with a low-temperature phase change material.

2. A phase change cooling and fresh-keeping device for fruits according to claim 1, characterized in that: A fan (26) is installed at the inner top of the top cover (21), an air inlet (22) aligned with the position of the fan is opened on the surface of the top cover (21), and a plurality of the metal phase change cells (25) are filled with low-temperature phase change material.

3. The phase change cooling and fresh-keeping device for fruits according to claim 1, characterized in that: The adjustable support frame (3) comprises two first support columns (31) and two second support columns (39) installed at the four corners inside the fresh-keeping box (1), and the top ends of the first support columns (31) and the second support columns (39) are movably provided with connection blocks (37).

4. A phase change cooling and fresh-keeping device for fruits according to claim 3, characterized in that: The upper ends of the adjacent two side walls on the connecting block (37) are provided with a clamping groove (38), and the four corners of the top cover (21) are provided with a notch, and the inner wall of the notch is connected to a clamping block (23), and the clamping block (23) is clamped in the inside of the clamping groove (38).

5. A phase change cooling and fresh-keeping device for fruits according to claim 4, characterized in that: A first cavity (32) is provided inside the first support column (31), a screw rod (35) is rotatably installed inside the first cavity (32), a threaded ring (351) is threadedly connected to the outer wall of the screw rod (35), wherein the bottoms of the two connecting blocks (37) are connected to a limiting rod (36), and the bottom end of the limiting rod (36) is connected to the threaded ring (351).

6. A phase change cooling and fresh-keeping device for fruits according to claim 5, characterized in that: The top of the first support column (31) is also provided with a limiting hole (33) connected to the first cavity (32), and the limiting rod (36) is inserted into the inside of the limiting hole (33). The bottom of the first support column (31) is installed with a motor (34), and one end of the output shaft of the motor (34) is connected to the bottom of the screw rod (35).

7. A phase change cooling and fresh-keeping device for fruits according to claim 6, characterized in that: A second cavity (310) is arranged inside the second support column (39), and a polished rod (311) is connected to the bottom of the other two connection blocks (37), and the polished rod (311) is slidably installed inside the second cavity (310).

8. The phase change cooling and fresh-keeping device for fruits according to claim 1, characterized in that: The inner wall of the fresh-keeping box (1) is provided with a second notch (13), and the end of the phase-change support plate (6) is integrally formed with a protrusion (61), and the protrusion (61) is slidably mounted inside the second notch (13).

9. A phase change cooling and fresh-keeping device for fruits according to claim 8, characterized in that: The outer wall of the fresh-keeping box (1) is provided with a limiting mechanism (4) for limiting the phase change support plate (6); the outer wall of the fresh-keeping box (1) is provided with a first notch (12); the limiting mechanism (4) comprises a connecting plate (41) slidably mounted inside the first notch (12); a through hole (42) is provided on the connecting plate (41); a positioning column (43) is movably mounted inside the through hole (42); a spring (44) is connected between the side wall of the positioning column (43) and the connecting plate (41).

10. A phase change cooling and fresh-keeping device for fruits according to claim 9, characterized in that: A through hole (14) connecting the first notch (12) and the second notch (13) is provided on the side wall of the fresh-keeping box (1); a limiting groove (62) is provided on the protrusion (61); one end of the positioning column (43) passes through the through hole (14) and is inserted into the inside of the limiting groove (62).

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