CN113955327B

CN113955327B - Cold chain intelligent logistics box

Info

Publication number: CN113955327B
Application number: CN202111231857.0A
Authority: CN
Inventors: 林礼区
Original assignee: Wenzhou University
Current assignee: Wenzhou University
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2023-05-09
Anticipated expiration: 2041-10-22
Also published as: CN113955327A

Abstract

The invention belongs to the technical field of logistics devices, and particularly discloses a cold chain intelligent logistics box which comprises a box body, a cover body and a refrigerating unit, wherein the upper end of the box body is detachably connected with the cover body; the device also comprises a ventilation unit and a support plate, wherein a plurality of ventilation holes are uniformly formed in the end face of the support plate; the supporting plate is positioned in the box body and is horizontally arranged; the side wall of the box body is provided with a cavity, and the refrigerating unit is positioned in the cavity; the supporting plate and the upper part of the box body form a placing space, and the supporting plate and the lower part of the box body form a ventilation space; the side wall of the upper part of the cavity is provided with an air vent communicated with the cavity, and the lower part of the cavity is communicated with the air vent space; the ventilation unit comprises a power source and fan blades, and the fan blades are driven by the power source to rotate. The logistics box adopting the scheme can lead the temperature in the logistics box to be uniform, and improves the refrigeration effect.

Description

Cold chain intelligent logistics box

Technical Field

The invention relates to the technical field of logistics devices, in particular to a cold chain intelligent logistics box.

Background

The cold chain logistics generally refers to a system engineering for ensuring the quality of food and reducing the loss of food by keeping the refrigerated food in a fixed low-temperature environment all the time in the links from production, storage, transportation and sales to consumption, and is established along with the progress of scientific technology and the development of refrigeration technology.

The existing cold chain intelligent logistics box generally comprises a cover body and a box body, wherein the cover body covers the upper portion of the box body, an interlayer is arranged in the box body and used for placing ice bags or other refrigeration components. In order to reduce heat conduction, the contact between external air and a logistics box is generally avoided as much as possible, but the existing cold-chain logistics box is poor in cold air flowability, and the cold air at different positions in the box is possibly unevenly distributed, so that temperature difference exists, and the refrigerating effect is affected.

Disclosure of Invention

The invention aims to provide a cold chain intelligent logistics box, which can be used for enabling the temperature in the logistics box to be uniform and improving the refrigerating effect.

In order to achieve the above purpose, the basic scheme of the invention is as follows: a cold chain intelligent logistics box comprises a box body, a cover body and a refrigerating unit, wherein the upper end of the box body is detachably connected with the cover body; the device also comprises a ventilation unit and a support plate, wherein a plurality of ventilation holes are uniformly formed in the end face of the support plate; the supporting plate is positioned in the box body and is horizontally arranged; the side wall of the box body is provided with a cavity, and the refrigerating unit is positioned in the cavity; the supporting plate and the upper part of the box body form a placing space, and the supporting plate and the lower part of the box body form a ventilation space; the side wall of the upper part of the cavity is provided with an air vent communicated with the cavity, and the lower part of the cavity is communicated with the air vent space; the ventilation unit comprises a power source and fan blades, and the fan blades are driven by the power source to rotate.

The working principle of the scheme is as follows: when using the cold chain intelligence thing flow box of this scheme, open the lid on box upper portion, place the food that needs refrigerated transportation in the backup pad, the backup pad is used for supporting food. Then the refrigerating unit in the cavity starts to refrigerate, the cover body is covered on the upper part of the box body, the box body forms a relatively closed space, and the refrigerating unit refrigerates the placing space on the upper part of the box body in an energy conduction mode. And meanwhile, the ventilation unit is started, namely a power source is started, and the power source starts and drives the fan blades to rotate. Because the backup pad is equipped with a plurality of air vents, produces the air flow when the flabellum rotates, and the air enters into the cavity from the bleeder vent again after entering into the space of placing from the air vent. When air flows in the cavity, the air passes through the refrigerating unit and is cooled by the refrigerating unit, the cooled air enters the ventilation space and then enters the placing space under the action of the fan blades, and other areas in the placing space are refrigerated, so that the operation is repeated.

When the logistics box of the scheme is adopted, air can enter the placing space after being cooled to form continuous circulation of cold air, so that the temperatures of all areas in the placing space are almost the same, the refrigerating effect is improved, and the refrigerating space of food is further prolonged.

Further, an insulation layer is arranged on the outer wall of the box body; the inner wall of the cover body is provided with a sealing strip. The arrangement of the heat preservation layer and the sealing strip can reduce the heat exchange between the logistics box and the outside,

further, the number of the fan blades is two, and the two fan blades are respectively positioned at two sides of the power source; the ventilation unit further comprises a first belt pulley, two belts and two second belt pulleys; the second belt pulleys are in a round table shape, the first belt pulleys are driven to rotate by a power source, the two second belt pulleys are driven to rotate by the first belt pulleys through belts respectively, and the two fan blades are connected with the two second belt pulleys coaxially respectively; the bottom of the ventilation space is also provided with two elastic telescopic parts which are respectively matched with the two belts, each elastic telescopic part comprises an elastic telescopic rod and a tensioning wheel, the tensioning wheels are matched with the belts, one end of each elastic telescopic rod is connected with the side part of the ventilation space, and the other end of each elastic telescopic rod is connected with the tensioning wheel.

After the power source is started, the power source drives the first belt pulley to rotate, the first belt pulley rotates to drive the second belt pulley to rotate through the belt, and the fan blades coaxially arranged with the second belt pulley rotate to realize cold air circulation. Because the second belt pulley is round platform form, thereby can adjust the rotational speed of second belt pulley through changing the contact position of second belt pulley and belt, further reach the effect of adjusting the flabellum rotational speed. The tensioning wheel and the elastic telescopic rod can enable the belt to be in a tensioning state all the time when the contact position of the second belt pulley and the belt is adjusted. The arrangement of the two fan blades can enable the cool air to enter the placing space from the ventilation space and then be more uniform in the placing space.

Further, the device also comprises a rotating shaft, a connecting column, a lever, a connecting rod, a speed reducer, a first gear and a second gear, wherein the output shaft of the power source is coaxially connected with the rotating shaft, the rotating shaft is in running fit with the bottom of the ventilation space, the first gear and the first belt pulley are respectively coaxially connected with the rotating shaft, the second gear is coaxially connected with the rotating shaft, and the second gear is meshed with the first gear; the end part of the rotating shaft is connected with one end of a speed reducer, and the other end of the speed reducer is also connected with a cylindrical cam; the upper end of the cylindrical cam is provided with an annular groove, one end of the connecting column is positioned in the annular groove and is in sliding fit with the annular groove, the other end of the connecting column is connected with the lever, the middle part of the lever is hinged with the side wall of the ventilation space, and the two ends of the lever are respectively connected with the two second belt pulleys in a rotating way; the lever is the telescopic link, and the second belt pulley middle part is equipped with axial spread groove, and the spread groove transversal surface personally submits ellipse, and the transversal surface of connecting rod upper end personally submits ellipse and stretches into in the spread groove and the vertical sliding fit of spread groove.

When the power source rotates, the cylindrical cam is driven to rotate through the rotating shaft, the first gear, the second gear and the speed reducer. Because the upper end of the cylindrical cam is provided with an annular groove matched with the connecting column, the connecting column can reciprocate up and down and drive the lever to reciprocate along the hinge joint of the connecting column when the cylindrical cam rotates. And because the two ends of the lever are respectively connected with the two second belt pulleys, the lever swings reciprocally to drive the two second belt pulleys to move reciprocally up and down. The second belt pulley reciprocates from top to bottom and changes the rotational speed of two flabellums, and the rotational speed of two flabellums is almost different promptly for the air conditioning is inhomogeneous when entering into the process in place space through the air vent, reaches the effect that places space air conditioning and distributes evenly.

Further, the inner wall of the box body is provided with a supporting groove, the end part of the supporting plate is positioned in the supporting groove and is in vertical sliding fit with the supporting groove, and an elastic supporting piece for buffering the supporting plate is arranged in the supporting groove. The elastic support piece can play a buffering effect, and the food in the logistics box can be protected by buffering when the logistics box receives impact or impact.

Further, the box further comprises a fixing part for fixing the cover body and the box body. The cover body can be fastened and fixed on the box body by the fixing part.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of a cold chain intelligent logistics box;

fig. 2 is an enlarged view at a in fig. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is an enlarged view at C in FIG. 1;

FIG. 5 is a schematic diagram showing a structure of a tensioning wheel and a belt in accordance with a first embodiment of the cold chain intelligent logistics box of the present invention;

FIG. 6 is a perspective view of a cylindrical cam of an embodiment of a cold chain intelligent logistics box of the present invention;

fig. 7 is a schematic structural diagram of a fixing portion in a second embodiment of a cold chain intelligent logistics box.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: the box 1, ventilation space 2, backup pad 3, ventilation hole 4, lever 5, first gear 6, motor 7, cylindrical cam 8, second gear 9, second belt pulley 10, spliced pole 11, connecting rod 12, take-up pulley 13, belt 14, placement space 15, cavity 16, spring 17, bleeder vent 18, first belt pulley 19, elastic telescopic rod 20, ring channel 21, recess 22, first pressure spring 23, fixed block 24, fixed slot 25, push pedal 26, push rod 27, second pressure spring 28, pivot 29, axis of rotation 30, lid 31, pressing plate 32, reduction gear 33, ventilation channel 34.

Example 1

This embodiment is basically as shown in fig. 1-6: the utility model provides a cold chain intelligence thing flow box, includes box 1, lid 31 and refrigeration unit, and box 1 upper end and lid 31 can dismantle and be connected. In this embodiment, the case 1 and the cover 31 may be connected in a conventional manner. The outer wall of the box body 1 is provided with an insulation layer; the inner wall of the cover 31 is provided with a sealing strip. The heat preservation and the sealing strip can reduce the heat exchange between the logistics box and the outside.

Referring to fig. 2, the cold chain intelligent logistics box in the embodiment further comprises a ventilation unit and a support plate 3, wherein a plurality of ventilation holes 4 are uniformly formed in the end face of the support plate 3; the support plate 3 is positioned inside the box body and horizontally arranged. Specifically, the inner wall of the box body is provided with a supporting groove, the end part of the supporting plate 3 is positioned in the supporting groove and is in vertical sliding fit with the supporting groove, an elastic supporting piece for buffering the supporting plate 3 is arranged in the supporting groove, the elastic supporting piece in the embodiment adopts a spring 17, the spring 17 is positioned in the supporting groove, and two ends of the spring 17 are respectively connected with the bottom of the supporting groove and the lower end of the supporting plate 3. The spring 17 can play a buffering effect, and the food in the logistics box can be protected by buffering when the logistics box is impacted or impacted.

The side wall of the box body is provided with a cavity 16, and the refrigerating unit is positioned in the cavity 16. The refrigeration unit in this embodiment employs an ice bag. The supporting plate 3 and the upper part of the box body form a placing space 15, and the supporting plate 3 and the lower part of the box body form a ventilation space 2; the side wall of the upper part of the cavity 16 is provided with an air vent 18 communicated with the cavity 16, and the lower part of the cavity 16 is provided with an air vent channel 34 communicated with the air vent space 2. Referring to fig. 3, 4 and 5, the ventilation unit includes a power source, fan blades (not shown), a first belt pulley 19, two belts 14 and two second belt pulleys 10, the power source in this embodiment adopts a motor 7, and the motor 7 is fixed at the bottom center of the ventilation space 2 by screws. The number of the fan blades is two, and the two fan blades are respectively positioned at two sides of the motor 7. The second pulley 10 has a truncated cone shape. The logistics box in the embodiment further comprises a rotating shaft 29, a rotating shaft 30, a lever 5, a connecting column 11, a connecting rod, a first gear 6 and a second gear 9, an output shaft of the motor 7 is coaxially connected with the rotating shaft 29 through a coupler, the rotating shaft 29 and a first belt pulley 19 are respectively connected with the first gear 6 through coaxial flat keys, and the rotating shaft 30 is in running fit with the bottom of the ventilation space 2 through bearings; the second gear 9 is coaxially and parallel-keyed to the rotation shaft 30, and the second gear 9 is meshed with the first gear 6. The end of the rotating shaft 30 is connected with one end of a speed reducer 33, and the other end of the speed reducer 33 is also connected with a cylindrical cam 8. Referring to fig. 6, an annular groove 21 is formed in the upper end of the cylindrical cam 8, one end of a connecting column 11 is located in the annular groove 21 and is in sliding fit with the annular groove 21, the other end of the connecting column 11 is hinged with a lever 5, the middle of the lever 5 is hinged with the side wall of the ventilation space 2 through a pin shaft, and two ends of the lever 5 are respectively connected with two second belt pulleys 10 in a rotating mode. The lever 5 is a telescopic rod, the middle part of the second belt pulley 10 is provided with an axial connecting groove, the cross section of the connecting groove is elliptical, and the upper end cross section of the connecting rod 12 is elliptical and extends into the connecting groove to be vertically matched with the connecting groove in a sliding manner. The two second belt pulleys 10 are respectively driven to rotate by the first belt pulley 19 through the belt 14, and the two fan blades are respectively and coaxially connected with the two second belt pulleys 10; the bottom of the ventilation space 2 is also provided with two elastic telescopic parts which are respectively matched with the two belts 14, each elastic telescopic part comprises an elastic telescopic rod 20 and a tensioning wheel 13, the tensioning wheels 13 are matched with the belts 14, one end of each elastic telescopic rod 20 is connected with the side part of the ventilation space 2 through a screw, and the other end of each elastic telescopic rod is connected with the tensioning wheel 13.

The working process of the cold chain intelligent logistics box adopting the embodiment is as follows: when the logistics box is used, the cover 31 at the upper part of the box body 1 is opened, food needing refrigeration and transportation is placed on the supporting plate 3, and the supporting plate 3 is used for supporting the food. Then, the ice bag is placed in the cavity 16, the cover 31 is covered on the upper portion of the case 1 and fixed, so that the case 1 forms a relatively closed space, and the ice bag refrigerates the placing space 15 on the upper portion of the case, particularly the side portion of the placing space 15, by means of energy conduction. Simultaneously, the motor 7 is started, the motor 7 rotates to drive the rotating shaft 29 to rotate, and the first belt pulley 19 coaxially connected with the rotating shaft 29 rotates along with the rotating shaft 29. The first belt pulley 19 rotates to drive the two second belt pulleys 10 to rotate through the belt 14, and fan blades coaxially arranged with the second belt pulleys 10 rotate to generate wind power. Because the supporting plate 3 is provided with a plurality of ventilation holes 4, air flows when the fan blades rotate, and the air enters the placing space 15 from the ventilation holes 4 and then enters the cavity 16 from the ventilation holes 18. When air flows in the cavity 16, the air passes through the refrigerating unit and is cooled by the refrigerating unit, cooled cold air enters the ventilation space 2 through the ventilation channel 34 and then enters the placement space 15 under the action of the fan blades, and other areas in the placement space 15 are refrigerated, so that the operation is repeated.

Because the first gear 6 is coaxially connected with the rotating shaft 29, the first gear 6 is meshed with the second gear 9, and therefore the second gear 9 is driven to rotate when the first gear 6 rotates. The rotation shaft 30 coaxially provided with the second gear 9 also rotates and drives the cylindrical cam 8 to rotate via the speed reducer 33. Because the upper end of the cylindrical cam 8 is provided with the annular groove 21 matched with the connecting column 11, the connecting column 11 can reciprocate up and down and drive the lever 5 to reciprocate along the hinge joint when the cylindrical cam 8 rotates. And because both ends of the lever 5 are respectively connected with the two second belt pulleys 10, the lever 5 swings reciprocally to drive the two second belt pulleys 10 to move reciprocally up and down. Because the second belt pulley 10 is in a truncated cone shape, when the second belt pulley 10 swings up and down, the contact position between the belt 14 and the second belt pulley 10 is changed, so that the rotation speed of the second belt pulley 10 is changed, and the effect of adjusting the rotation speed of the fan blades is achieved. The up-and-down reciprocating movement of the second pulley 10 changes the rotational speeds of the two blades, i.e., the rotational speeds of the two blades are almost different, so that the cool air is not uniform in the process of entering the placement space 15 through the ventilation holes 4, i.e., the flow rate of the wind generated by the blades is varied. According to the Bernoulli equation, when the flow speed is faster, the pressure is smaller, that is, when cold air with different speeds passes through the vent hole 4, the air at two sides of the vent hole 4 flows towards the direction of the vent hole 4, and the flow speeds are different, so that the air in the whole placing space 15 is in an irregular motion state, and therefore food at any position of the placing space 15 can be cooled, the temperatures of various areas in the placing space 15 are almost the same, the refrigerating effect is improved, and the refrigerating space of the food is further prolonged.

The tensioner 13 and the elastic telescopic rod 20 are arranged such that the belt 14 is always in tension when the contact position of the second pulley 10 with the belt 14 is adjusted.

Example two

As shown in fig. 7, the difference between the present embodiment and the first embodiment is that the present embodiment further includes a fixing portion for fixing the cover 31 and the case 1. Specifically, the fixing part comprises a fixing block 24, a first pressure spring 23 and a second pressure spring 28, a groove 22 is formed in the side part of the outer wall of the box body 1, and the first pressure spring 23 and the fixing block 24 are both located in the groove 22. Two ends of the first pressure spring 23 are respectively connected with the bottom wall of the groove 22 and the left end of the fixed block 24, the fixed block 24 is transversely matched with the groove 22 in a sliding manner, and the right end of the fixed block 24 is an inclined plane. The left side of the cover body 31 is provided with a fixed groove 25 and a fixed through groove, and the fixed groove 25 is communicated with the fixed through groove. The fixing groove 25 is divided into a first fixing section, a second fixing section and a third fixing section from left to right, the longitudinal sections of the first fixing section and the third fixing section are rectangular, and the size of the third fixing section is smaller than that of the first fixing section; the longitudinal section of the second fixing section is trapezoidal. The push rod 27 and the push plate 26 are further arranged in the fixed through groove, the left end of the push rod 27 is connected with the push plate 26, and the push plate 26 can horizontally slide in the solid through groove and slide into the fixed groove 25 to be contacted with the fixed block 24. The right-hand member of push rod 27 is connected with presses the board 32, presses the board 32 and leads to the groove tip parallel and level with solid-state, and push rod 27 passes second pressure spring 28, and second pressure spring 28 both ends are connected with push pedal 26 and fixed logical groove lateral wall respectively.

When the cover 31 is fixed to the case, the cover 31 is covered on the upper portion of the case 1, and then the cover 31 is pressed downward. In the original state, the fixed block 24 is located outside the groove 22 under the action of the first pressure spring 23, and in the process that the cover 31 is pressed downwards, the lower end of the cover 31 is contacted with the inclined plane of the fixed block 24, at the moment, the inclined plane enters the groove 22, and the first pressure spring 23 stores energy. As the cover 31 continues to be pushed down, when the fixing groove 25 moves to a position opposite to the recess 22, the fixing block 24 moves rightward and enters into the fixing groove 25 by the first compression spring 23. Because the second fixing section of the fixing groove 25 has a trapezoidal longitudinal section, the fixing block 24 applies downward pressure to the second fixing section in the second fixing section, so that the cover 31 is tightly pressed against the case. When the cover 31 needs to be removed, the pressing plate 32 is pressed leftwards, and the pressing plate 32 pushes the push plate 26 to move leftwards through the push rod 27, so that the fixing block 24 is pushed into the groove 22. After releasing the pressing plate 32, the pressing plate 32 returns to the original position by the second compression spring 28.

By adopting the logistics box of the embodiment, the cover 31 and the box body 1 can be well fixed together by the fixing part.

The foregoing is merely exemplary embodiments of the present invention, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. A cold chain intelligent logistics box comprises a box body, a cover body and a refrigerating unit, wherein the upper end of the box body is detachably connected with the cover body; the method is characterized in that: the device also comprises a ventilation unit and a support plate, wherein a plurality of ventilation holes are uniformly formed in the end face of the support plate; the supporting plate is positioned in the box body and is horizontally arranged; the side wall of the box body is provided with a cavity, and the refrigerating unit is positioned in the cavity; the supporting plate and the upper part of the box body form a placing space, and the supporting plate and the lower part of the box body form a ventilation space; the side wall of the cavity is provided with a vent hole for connecting the cavity with the placing space, and the lower part of the cavity is communicated with the vent space; the ventilation unit comprises a power source and fan blades, and the fan blades are driven to rotate by the power source; an insulation layer is arranged on the outer wall of the box body; the inner wall of the cover body is provided with a sealing strip; the number of the fan blades is two, and the two fan blades are respectively positioned at two sides of the power source; the ventilation unit further comprises a first belt pulley, two belts and two second belt pulleys; the second belt pulleys are in a round table shape, the first belt pulleys are driven to rotate by a power source, the two second belt pulleys are driven to rotate by the first belt pulleys through belts respectively, and the two fan blades are connected with the two second belt pulleys coaxially respectively; the bottom of the ventilation space is also provided with two elastic telescopic parts which are respectively matched with the two belts, each elastic telescopic part comprises an elastic telescopic rod and a tensioning wheel, the tensioning wheels are matched with the belts, one end of each elastic telescopic rod is connected with the side part of the ventilation space, and the other end of each elastic telescopic rod is connected with the tensioning wheel;

the device also comprises a fixing part for fixing the cover body and the box body, wherein the fixing part comprises a fixing block, a first pressure spring and a second pressure spring, a groove is formed in the lateral part of the outer wall of the box body, and the first pressure spring and the fixing block are both positioned in the groove; two ends of the first pressure spring are respectively connected with the bottom wall of the groove and the left end of the fixed block, the fixed block is transversely matched with the groove in a sliding manner, and the right end of the fixed block is an inclined plane; the left side of the cover body is provided with a fixed groove and a fixed through groove, and the fixed groove is communicated with the fixed through groove; the fixing groove is divided into a first fixing section, a second fixing section and a third fixing section from left to right, longitudinal sections of the first fixing section and the third fixing section are rectangular, and the size of the third fixing section is smaller than that of the first fixing section; the longitudinal section of the second fixing section is trapezoidal; the fixed through groove is internally provided with a push rod and a push plate, the left end of the push rod is connected with the push plate, the right end of the push rod is connected with a pressing plate, the pressing plate is flush with the end of the fixed through groove, the push rod penetrates through a second pressure spring, and two ends of the second pressure spring are respectively connected with the push plate and the side wall of the fixed through groove.

2. The cold chain intelligent logistics box of claim 1, wherein: the device comprises a power source, a ventilation space, a rotating shaft, a connecting column, a lever, a connecting rod, a speed reducer, a first gear and a second gear, wherein the output shaft of the power source is coaxially connected with the rotating shaft; the end part of the rotating shaft is connected with one end of a speed reducer, and the other end of the speed reducer is also connected with a cylindrical cam; the upper end of the cylindrical cam is provided with an annular groove, one end of the connecting column is positioned in the annular groove and is in sliding fit with the annular groove, the other end of the connecting column is connected with the lever, the middle part of the lever is hinged with the side wall of the ventilation space, and the two ends of the lever are respectively connected with the two second belt pulleys in a rotating way; the lever is the telescopic link, and the second belt pulley middle part is equipped with axial spread groove, and the spread groove transversal surface personally submits ellipse, and the transversal surface of connecting rod upper end personally submits ellipse and stretches into in the spread groove and the vertical sliding fit of spread groove.

3. The cold chain intelligent logistics box of claim 2, wherein: the inner wall of the box body is provided with a supporting groove, the end part of the supporting plate is positioned in the supporting groove and is in vertical sliding fit with the supporting groove, and an elastic supporting piece for buffering the supporting plate is arranged in the supporting groove.