CN117562117A - Fruit and vegetable vacuum precooling equipment - Google Patents
Fruit and vegetable vacuum precooling equipment Download PDFInfo
- Publication number
- CN117562117A CN117562117A CN202410052863.7A CN202410052863A CN117562117A CN 117562117 A CN117562117 A CN 117562117A CN 202410052863 A CN202410052863 A CN 202410052863A CN 117562117 A CN117562117 A CN 117562117A
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- water
- pipe
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- quick connector
- air
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- 235000012055 fruits and vegetables Nutrition 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 151
- 238000007789 sealing Methods 0.000 claims abstract description 68
- 238000000605 extraction Methods 0.000 claims description 52
- 238000001816 cooling Methods 0.000 claims description 39
- 230000001502 supplementing effect Effects 0.000 claims description 39
- 238000000889 atomisation Methods 0.000 claims description 8
- 235000013399 edible fruits Nutrition 0.000 claims description 4
- 238000005057 refrigeration Methods 0.000 claims description 4
- 235000013311 vegetables Nutrition 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000001704 evaporation Methods 0.000 abstract description 8
- 230000008020 evaporation Effects 0.000 abstract description 7
- 239000007921 spray Substances 0.000 abstract description 6
- 238000002309 gasification Methods 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract 1
- 240000007124 Brassica oleracea Species 0.000 description 3
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 3
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 3
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000037380 skin damage Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/0425—Freezing; Subsequent thawing; Cooling the material not being transported through or in the apparatus, with or without shaping, e.g. in the form of powder, granules or flakes
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/144—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor
- A23B7/148—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/14—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10
- A23B7/153—Preserving or ripening with chemicals not covered by groups A23B7/08 or A23B7/10 in the form of liquids or solids
- A23B7/158—Apparatus for preserving using liquids
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
Abstract
The invention relates to the technical field of vacuum precooling, in particular to fruit and vegetable vacuum precooling equipment, which is characterized in that an air suction main channel and an air suction branch channel are arranged on a movable layer frame, an air suction pipe of a vacuum box body is in sealing butt joint by a plug-in type sealing quick connector, so that air is directly sucked from the upper part of fruits and vegetables on the movable layer frame, and meanwhile, atomized water sprayed by the atomized spray head directly acts on the fruits and vegetables placed above the movable layer frame, evaporation and gasification absorb heat in the rising process of the atomized water, the heat of the fruits and vegetables is assisted to be absorbed when the fruits and vegetables are supplemented with water, after the vacuum precooling is finished, wet cold gas above a water tank is filled into the vacuum box body by a suction pump through switching a first three-way valve and a second three-way valve, so that the vacuum box body is recovered to normal pressure, the fruits and vegetables are kept in a low-temperature atmosphere in the normal pressure recovery process, the efficiency of the vacuum precooling is further ensured, and the water loss of the fruits and vegetables in the vacuum precooling process is reduced.
Description
Technical Field
The invention relates to the technical field of vacuum precooling, in particular to fruit and vegetable vacuum precooling equipment.
Background
The vacuum pre-cooling equipment is a cooling processing equipment which utilizes a vacuum pump to pump air and water vapor in a vacuum box body so as to reduce the air pressure in the vacuum box body. The prior art comprises the following characteristics: the temperature is reduced rapidly: the vacuum precooling equipment can rapidly solve the field heating problem after picking fruits and vegetables and flowers, and inhibit respiration and self loss of the fruits and vegetables. And (3) cooling uniformly: the vacuum pre-cooling is not limited by the package, so that the temperature of the surface center is consistent, and the surface center is stably and uniformly reduced. The fruit, vegetable and flower picking device is suitable for picking fruits, vegetables and flowers in rainy days, and can rapidly take away moisture on the surface, so that the cooling effect is achieved. The water evaporation absorbs heat to cool down, so that the skin damage caused by cooling the articles is avoided, and the freshness is high.
In the existing vacuum precooling equipment, the vacuum box body for placing food to be precooled is arranged, the exhaust pipe is connected to one side of the vacuum box body, after the food to be precooled is placed in the vacuum box body, the box door is closed, and gas in the vacuum box body is pumped out through the exhaust pipe by the exhaust pump, so that negative pressure is generated in the vacuum box body, and water vapor in the food is rapidly evaporated, thereby achieving the precooling purpose through evaporation heat absorption.
Therefore, there is a need to improve the structure of the fruit and vegetable vacuum pre-cooling device, improve the fruit and vegetable vacuum pre-cooling efficiency, and reduce the water loss in the fruit and vegetable.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: there is a great need to improve the structure of fruit and vegetable vacuum pre-cooling equipment, improve fruit and vegetable vacuum pre-cooling efficiency, and reduce water loss in fruits and vegetables.
In order to solve the technical problems, the invention adopts the following technical scheme:
fruit vegetables vacuum precooling equipment includes:
the vacuum box body is provided with an opening in the X direction, and the opening is provided with a box door;
the air extraction system comprises an air extraction pipe, a first plug-in type sealing quick connector A and an air extraction pump, wherein the air extraction pump is connected to the air extraction pipe, the first plug-in type sealing quick connector A is connected to one end of the air extraction pipe, and the first plug-in type sealing quick connector A is arranged on the inner wall of the X-direction reverse side of the vacuum box body;
the atomization water replenishing system comprises a water tank, a water guide pipe, a water pump and a second plug-in type sealing quick connector A, wherein one end of the water guide pipe is connected to the water tank, the other end of the water guide pipe is connected to the second plug-in type sealing quick connector A, and the second plug-in type sealing quick connector A is arranged on the inner wall of the X-direction reverse side of the vacuum box body; the water tank is provided with a cooling device which is used for cooling the water stored in the water tank to below 5 ℃, and the water level in the water tank is controlled to be between one third and two thirds of the volume;
one end of the first air duct is connected to the upper part of the water tank, the other end of the first air duct is connected to the exhaust pipe through a first three-way valve, and the first three-way valve is positioned behind the air outlet end of the exhaust pump;
one end of the second air duct is connected with the air suction pipe through a second three-way valve, the other end of the second air duct is connected with the vacuum box body, and the second three-way valve is positioned in front of the air inlet end of the air suction pump;
the movable layer rack comprises a rectangular frame, an air extraction main channel, an air extraction branch channel, a first plug-in type sealing quick connector B, a water supplementing main channel, a water supplementing branch channel, a second plug-in type sealing quick connector B and an atomization nozzle;
the lower part of the rectangular frame is provided with universal wheels;
the main air extraction channel and the branch air extraction channel are fixedly connected to the rectangular frame;
the first plug-in type sealing quick connector B is matched with the first plug-in type sealing quick connector A, and the first plug-in type sealing quick connector B is connected with the air exhaust main channel; the main air suction channel extends along the vertical direction, the plurality of branch air suction channels are distributed along the vertical direction, each branch air suction channel comprises a first Y-direction pipe and a plurality of first X-direction pipes, each first Y-direction pipe is respectively communicated with the main air suction channel, each first X-direction pipe is respectively communicated with the first Y-direction pipe, and air suction openings are distributed in an array at the lower part of each first X-direction pipe; the first X-direction tube is used for supporting and placing fruits and vegetables to be pre-cooled in vacuum;
the water supplementing main channel and the water supplementing branch channel are fixedly connected to the rectangular frame;
the second plug-in type sealing quick connector B is matched with the second plug-in type sealing quick connector A, the second plug-in type sealing quick connector B is connected to the water supplementing main channel, the water supplementing main channel extends along the vertical direction, the water supplementing branch channels are distributed in an arrangement mode along the vertical direction, each water supplementing branch channel comprises a second Y-shaped pipe and a plurality of second X-shaped pipes, each second Y-shaped pipe is communicated with the water supplementing main channel, each second X-shaped pipe is communicated with each second Y-shaped pipe, and atomizing nozzles are arranged on the upper portion of each second X-shaped pipe in an array mode.
Further, in the fruit and vegetable vacuum precooling equipment structure, the distance between the air extraction branch channels of two adjacent layers is equal to the distance between the water supplementing branch channels of two adjacent layers.
Further, in the fruit and vegetable vacuum precooling equipment structure, the height of the pumping branch channel at the uppermost layer is higher than the height of the water supplementing branch channel at the uppermost layer.
Furthermore, in the fruit and vegetable vacuum precooling equipment structure, the distribution density of the first X-direction tube is higher than that of the second X-direction tube.
Furthermore, in the fruit and vegetable vacuum precooling equipment structure, the positions of the first X-direction tube and the second X are staggered.
Furthermore, in the fruit and vegetable vacuum precooling equipment structure, the vertical distance between the atomizing nozzle and the nearest air suction branch channel above the atomizing nozzle is 1-4cm.
Further, in the fruit and vegetable vacuum precooling equipment structure, the fruit and vegetable vacuum precooling equipment further comprises a water collecting device, wherein the water collecting device comprises a water collecting tank, a refrigerating assembly and a water diversion pipe, the water collecting tank is communicated with the lower part of the middle section of the extraction pipe, and the water collecting tank is communicated with the water tank through the water diversion pipe; the refrigeration assembly comprises a compressor, a condenser, an expansion valve and an evaporator which are sequentially connected, the evaporator is arranged in the air extraction main pipe, and the evaporator is positioned above the water collecting tank.
Furthermore, in the fruit and vegetable vacuum precooling equipment structure, the exhaust pipe is connected with a drying filter.
Furthermore, in the fruit and vegetable vacuum precooling equipment structure, the water guide pipe is connected with an ultraviolet sterilizer.
The invention has the beneficial effects that: the main air suction channel and the branch air suction channel are arranged on the movable shelf, the plug-in type sealing quick connector is used for sealing and butting with the air suction pipe of the vacuum box body, so that air is directly sucked from the upper part of fruits and vegetables on the movable shelf, and similarly, atomized water sprayed by the atomized spray head directly acts on fruits and vegetables placed above the atomized water through the main water supplementing channel, the branch water supplementing channel and the atomized spray head, evaporation, gasification and heat absorption are carried out in the rising process of the atomized water, the heat of the fruits and vegetables is assisted to be absorbed while the fruits and vegetables are supplemented, and gasified steam directly enters the air suction port above the atomized water, so that the influence on the vacuum precooling efficiency caused by overlong stay of the steam carrying the heat in the vacuum box body is avoided; after the vacuum pre-cooling is finished, the wet cooling gas above the water tank is filled into the vacuum box body by switching the first three-way valve and the second three-way valve, so that the vacuum box body is restored to normal pressure, fruits and vegetables are kept in the low-temperature atmosphere in the normal pressure restoring process, the vacuum pre-cooling efficiency is further ensured, and the water loss of the fruits and vegetables in the vacuum pre-cooling process is reduced.
Drawings
Fig. 1 is a schematic view of a Y-direction structure of a fruit and vegetable vacuum pre-cooling device according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1;
FIG. 3 is an X-direction view of a fruit and vegetable vacuum pre-cooling device structure according to an embodiment of the invention;
fig. 4 is an enlarged view of a portion B of fig. 3;
fig. 5 is a top view of the internal structure of a vacuum box of the fruit and vegetable vacuum pre-cooling device according to the embodiment of the invention;
description of the reference numerals:
1. a vacuum box; 11. a limit rail; 111. a horn-like opening; 12. limiting cushion blocks;
2. an air extraction system; 21. an exhaust pipe; 22. the first plug-in type sealing quick connector A; 23. an air extracting pump; 24. a first air duct; 25. a first three-way valve; 26. a second air duct; 27. a second three-way valve;
3. an atomization water supplementing system; 31. a water tank; 32. a water conduit; 33. a water pump; 34. the second plug-in type sealing quick connector A;
4. moving the layer rack; 41. a rectangular frame; 42. a main air extraction channel; 43. an air extraction branch channel; 431. a first Y-direction tube; 432. a first X-direction tube; 433. an extraction opening; 44. the first plug-in type sealing quick connector B; 45. a water supplementing main channel; 46. supplementing the water branch channel; 461. a second Y-direction tube; 462. a second X-direction tube; 463. an atomizing nozzle; 47. the second plug-in type sealing quick connector B; 48. a universal wheel;
5. a water collecting device; 51. a water collection tank; 52. a refrigeration assembly; 521. a compressor; 522. a condenser; 523. an expansion valve; 524. an evaporator; 53. a water conduit;
6. drying the filter;
7. an ultraviolet sterilizer.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 4, a specific embodiment of the present invention relates to a fruit and vegetable vacuum pre-cooling apparatus, which includes:
the vacuum box body 1 is provided with an opening in the X direction, and the opening is provided with a box door;
the air extraction system 2 comprises an air extraction pipe 21, a first plug-in type sealing quick connector A22 and an air extraction pump 23, wherein the air extraction pump 23 is connected to the air extraction pipe 21, the first plug-in type sealing quick connector A22 is connected to one end of the air extraction pipe 21, and the first plug-in type sealing quick connector A22 is arranged on the inner wall of the X-direction opposite side of the vacuum box body 1;
the atomization water replenishing system 3 comprises a water tank 31, a water guide pipe 32, a water pump 33 and a second plug-in type sealing quick connector A34, wherein one end of the water guide pipe 32 is connected with the water tank 31, the other end of the water guide pipe is connected with the second plug-in type sealing quick connector A34, and the second plug-in type sealing quick connector A34 is arranged on the inner wall of the X-direction opposite side of the vacuum box body 1; the water tank 31 is provided with a cooling device which is used for cooling the water stored in the water tank 31 to below 5 ℃, and the water level in the water tank 31 is controlled to be between one third and two thirds of the volume;
the first air duct 24, one end of the first air duct 24 is connected to the upper part of the water tank 31, the other end is connected to the air extraction pipe 21 through the first three-way valve 25, the first three-way valve 25 is located behind the air outlet end of the air extraction pump 23;
the second air duct 26, one end of the second air duct 26 is connected to the air suction pipe 21 through a second three-way valve 27, the other end is connected to the vacuum box 1, and the second three-way valve 27 is positioned in front of the air inlet end of the air suction pump 23;
a movable shelf 4, wherein the movable shelf 4 comprises a rectangular frame 41, an air extraction main channel 42, an air extraction branch channel 43, a first plug-in type sealing quick connector B44, a water supplementing main channel 45, a water supplementing branch channel 46, a second plug-in type sealing quick connector B47 and an atomization nozzle 463;
the lower part of the rectangular frame 41 is provided with universal wheels 48;
the main air suction channel 42 and the branch air suction channel 43 are fixedly connected to the rectangular frame 41;
the first plug-in type sealing quick connector B44 is matched with the first plug-in type sealing quick connector A22, and the first plug-in type sealing quick connector B44 is connected with the air extraction main channel 42; the main air extraction channel 42 extends along a vertical direction, a plurality of branch air extraction channels 43 are arranged and distributed along the vertical direction, each branch air extraction channel 43 comprises a first Y-direction tube 431 and a plurality of first X-direction tubes 432, each first Y-direction tube 431 is respectively communicated with the main air extraction channel 42, each first X-direction tube 432 is respectively communicated with the first Y-direction tube 431, and air extraction openings 433 are distributed in an array at the lower part of each first X-direction tube 432; the first X-direction tube 432 is used for supporting and placing fruits and vegetables to be pre-cooled in vacuum;
the water supplementing main channel 45 and the water supplementing branch channel 46 are fixedly connected to the rectangular frame 41;
the second plug-in type sealing quick connector B47 is matched with the second plug-in type sealing quick connector A34, the second plug-in type sealing quick connector B47 is connected to the water supplementing main channel 45, the water supplementing main channel 45 extends along the vertical direction, the water supplementing branch channels 46 are distributed in an arrayed mode along the vertical direction, each water supplementing branch channel 46 comprises a second Y-shaped pipe 461 and a plurality of second X-shaped pipes 462, each second Y-shaped pipe 461 is respectively communicated with the water supplementing main channel 45, each second X-shaped pipe 462 is respectively communicated with the second Y-shaped pipe 461, and atomizing nozzles 463 are distributed on the upper portion of each second X-shaped pipe 462 in an array mode.
The working principle of the above embodiment is as follows: the fruits and vegetables to be pre-cooled in vacuum are placed on a first X-direction tube 432 of each layer of the movable layer rack 4 in advance, then the movable layer rack 4 with the fruits and vegetables placed is pushed into the vacuum box body 1, so that the first plug-in type sealing quick connector A22 and the first plug-in type sealing quick connector B44 are accurately sealed and butted, and meanwhile, the second plug-in type sealing quick connector A34 and the second plug-in type sealing quick connector B47 are accurately sealed and butted; closing the box door, starting the air pump 23, selectively starting the water pump 33, and sequentially enabling the air in the vacuum box body 1 to enter the air extraction pipe 21 through the air extraction opening 433 and be discharged through the first X-direction pipe 432, the first Y-direction pipe 431 and the air extraction main channel 42; when the water pump 33 is started, water flows through the water guide pipe 32, the second plug-in type sealing quick connector, the water supplementing main channel 45, the second Y-direction pipe 461 and the second X-direction pipe 462 in sequence from the water tank 31 through the water pump 33, atomized water is sprayed upwards from each atomizing nozzle 463, and the temperature of the atomized water is controlled to be 1-5 ℃.
After the vacuum pre-cooling is finished, the water pump 33 is closed, the first three-way valve 25 and the second three-way valve 27 are switched, the first air guide pipe 24, the air exhaust pipe 21 and the second air guide pipe 26 are sequentially communicated, wet and cold air above the water tank 31 is pumped into the vacuum box body 1 through the air exhaust pump 23, the vacuum box body 1 is restored to normal pressure, then the box door is opened, and the movable layer frame 4 is pulled out of the vacuum box body 1.
In the above embodiment, the limiting device for limiting the movable layer frame 4 may be disposed on the Y-direction side wall of the vacuum box 1, so that when the movable layer frame 4 is pushed into the vacuum box 1 from the X-direction, the first plug-in sealing quick connector a22 and the first plug-in sealing quick connector B44 can be accurately sealed and butted, and meanwhile, the second plug-in sealing quick connector a34 and the second plug-in sealing quick connector B47 can be accurately sealed and butted. For example, the limiting device comprises a limiting rail 11 arranged at the bottom of the vacuum box body, the width of the limiting rail 11 is consistent with the width of the universal wheel 48, a horn-shaped opening 111 can be formed at the X-direction end of the limiting rail 11, namely, one end facing the box door, so that when the movable layer frame 4 is pushed into the box body, the universal wheel 48 can smoothly transition into the limiting rail 11, when the universal wheel 48 is limited by the limiting rail 11, universal rotation cannot be carried out any more, only X-direction displacement can be achieved, the Y-direction displacement of the movable layer frame 4 is limited, and therefore, the first plug-and-socket type sealing quick connector A22 is guided to coincide with the axis of the first plug-and-socket type sealing quick connector B44, meanwhile, the second plug-and-socket type sealing quick connector A34 is guided to coincide with the axis of the second plug-and-socket type sealing quick connector B47, and when the movable layer frame 4 is pushed in the X-direction in a reverse direction, the first plug-and-socket type sealing quick connector A22 and the second plug-and plug type sealing quick connector B44 can be ensured. In order to avoid excessive grafting of the sealing quick connectors caused by excessive movement of the movable layer frame 4 in the vacuum box body, a limit cushion block 12 can be arranged on the X-direction reverse inner wall of the vacuum box body, and the contact between the limit cushion block 12 and the movable layer frame 4 is limited, namely, when the limit cushion block 12 contacts with the movable layer frame 4, the sealing quick connectors are indicated to be in sealed butt joint, and cannot be pushed inwards any more.
In the above embodiment, the side air suction mode of the traditional vacuum pre-cooling device is changed, the air suction main channel 42 and the air suction branch channel 43 are arranged on the movable shelf 4, and the air suction main channel 42 and the air suction branch channel 43 are in sealed butt joint with the air suction pipe 21 of the vacuum box body 1 by using the plug-in type sealing quick connector, so that air is directly sucked from the upper part of fruits and vegetables on the movable shelf 4, and similarly, atomized water sprayed by the atomized spray nozzle 463 directly acts on the fruits and vegetables placed above the atomized water through arranging the water supplementing main channel 45, the water supplementing branch channel 46 and the atomized spray nozzle 463 on the movable shelf 4, evaporation and gasification are carried out to absorb heat in the rising process of the atomized water, the heat of the fruits and vegetables is assisted to be absorbed at the same time when the fruits and vegetables are supplemented, and gasified steam directly enters the air suction opening 433 above the fruits and vegetables, so that the steam carrying the heat stays in the vacuum box body 1 for too long time to influence the vacuum pre-cooling efficiency is avoided; after the vacuum pre-cooling is finished, the wet cooling gas above the water tank 31 is filled into the vacuum box body 1 by switching the first three-way valve 25 and the second three-way valve 27 through the air pump 23, so that the vacuum box body 1 is restored to normal pressure, fruits and vegetables are kept in a low-temperature atmosphere in the normal pressure restoring process, the efficiency of the vacuum pre-cooling is further ensured, for example, the freshly harvested cabbages are subjected to the vacuum pre-cooling, the surface temperature of the cabbages before the pre-cooling is 33 ℃, the total pre-cooling time can be shortened to 13min, the surface temperature of the cabbages after the pre-cooling treatment is 2 ℃, and the water loss of the fruits and vegetables in the vacuum pre-cooling process can be reduced.
As a preferred embodiment, the spacing between the suction branch channels 43 of adjacent two layers is equal to the spacing between the make-up branch channels 46 of adjacent two layers.
As a preferred embodiment, the uppermost suction branch channel 43 is higher than the uppermost make-up branch channel 46.
As a preferred embodiment, the first X-direction tube 432 has a higher distribution density than the second X-direction tube 462.
As a preferred embodiment, the first X-direction tube 432 and the second X-direction tube are offset.
As a preferred embodiment, the atomizer 463 is spaced from the suction branch channel 43 closest above it by 1-4cm in vertical direction.
The above structure enables atomized water sprayed out of the atomized spray head 463 to quickly contact fruits and vegetables above before evaporation and gasification, so that the atomized water can absorb heat on the surfaces of the fruits and vegetables in an auxiliary manner in the evaporation process.
As a preferred embodiment, the water collecting device 5 further comprises a water collecting tank 51, a refrigerating assembly 52 and a water diversion pipe 53, wherein the water collecting tank 51 is communicated with the lower part of the middle section of the air extraction pipe 21, and the water collecting tank 51 is communicated with the water tank 31 through the water diversion pipe 53; the refrigeration assembly 52 comprises a compressor 521, a condenser 522, an expansion valve 523 and an evaporator 524 which are sequentially connected, wherein the evaporator 524 is arranged in the extraction main pipe, and the evaporator 524 is positioned above the water collecting tank 51.
The water in the air suction pipe 21 is condensed and returned to the water collection tank 51 by the refrigerating action of the refrigerant evaporating and absorbing heat in the evaporator 524, and flows to the water tank 31 through the water conduit 53 as atomization humidification water.
As a preferred embodiment, the air extraction pipe 21 is connected to the drier-filter 6.
As a preferred embodiment, the water guide pipe 32 is connected to an ultraviolet sterilizer 7.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (9)
1. Fruit vegetables vacuum precooling equipment, its characterized in that includes:
the vacuum box body is provided with an opening in the X direction, and the opening is provided with a box door;
the air extraction system comprises an air extraction pipe, a first plug-in type sealing quick connector A and an air extraction pump, wherein the air extraction pump is connected to the air extraction pipe, the first plug-in type sealing quick connector A is connected to one end of the air extraction pipe, and the first plug-in type sealing quick connector A is arranged on the inner wall of the X-direction reverse side of the vacuum box body;
the atomization water replenishing system comprises a water tank, a water guide pipe, a water pump and a second plug-in type sealing quick connector A, wherein one end of the water guide pipe is connected to the water tank, the other end of the water guide pipe is connected to the second plug-in type sealing quick connector A, and the second plug-in type sealing quick connector A is arranged on the inner wall of the X-direction reverse side of the vacuum box body; the water tank is provided with a cooling device which is used for cooling the water stored in the water tank to below 5 ℃, and the water level in the water tank is controlled to be between one third and two thirds of the volume;
one end of the first air duct is connected to the upper part of the water tank, the other end of the first air duct is connected to the exhaust pipe through a first three-way valve, and the first three-way valve is positioned behind the air outlet end of the exhaust pump;
one end of the second air duct is connected with the air suction pipe through a second three-way valve, the other end of the second air duct is connected with the vacuum box body, and the second three-way valve is positioned in front of the air inlet end of the air suction pump;
the movable layer rack comprises a rectangular frame, an air extraction main channel, an air extraction branch channel, a first plug-in type sealing quick connector B, a water supplementing main channel, a water supplementing branch channel, a second plug-in type sealing quick connector B and an atomization nozzle;
the lower part of the rectangular frame is provided with universal wheels;
the main air extraction channel and the branch air extraction channel are fixedly connected to the rectangular frame;
the first plug-in type sealing quick connector B is matched with the first plug-in type sealing quick connector A, and the first plug-in type sealing quick connector B is connected with the air exhaust main channel; the main air suction channel extends along the vertical direction, the plurality of branch air suction channels are distributed along the vertical direction, each branch air suction channel comprises a first Y-direction pipe and a plurality of first X-direction pipes, each first Y-direction pipe is respectively communicated with the main air suction channel, each first X-direction pipe is respectively communicated with the first Y-direction pipe, and air suction openings are distributed in an array at the lower part of each first X-direction pipe; the first X-direction tube is used for supporting and placing fruits and vegetables to be pre-cooled in vacuum;
the water supplementing main channel and the water supplementing branch channel are fixedly connected to the rectangular frame;
the second plug-in type sealing quick connector B is matched with the second plug-in type sealing quick connector A, the second plug-in type sealing quick connector B is connected to the water supplementing main channel, the water supplementing main channel extends along the vertical direction, the water supplementing branch channels are distributed in an arrangement mode along the vertical direction, each water supplementing branch channel comprises a second Y-shaped pipe and a plurality of second X-shaped pipes, each second Y-shaped pipe is communicated with the water supplementing main channel, each second X-shaped pipe is communicated with each second Y-shaped pipe, and atomizing nozzles are arranged on the upper portion of each second X-shaped pipe in an array mode.
2. The fruit and vegetable vacuum precooling apparatus as defined in claim 1, wherein the spacing between the suction branch channels of adjacent two layers is equal to the spacing between the water supplementing branch channels of adjacent two layers.
3. The fruit and vegetable vacuum precooling apparatus as defined in claim 1, wherein the height of the uppermost suction branch channel is higher than the height of the uppermost water supplementing branch channel.
4. The fruit and vegetable vacuum pre-cooling apparatus of claim 1, wherein the first X-tube has a higher distribution density than the second X-tube.
5. The fruit and vegetable vacuum pre-cooling apparatus of claim 1, wherein the first X-direction tube and the second X-direction tube are staggered in position.
6. The fruit and vegetable vacuum pre-cooling device according to claim 1, wherein the vertical distance between the atomizing nozzle and the nearest air suction branch channel above the atomizing nozzle is 1-4cm.
7. The fruit and vegetable vacuum pre-cooling device according to claim 1, further comprising a water collecting device, wherein the water collecting device comprises a water collecting tank, a refrigerating assembly and a water conduit, the water collecting tank is communicated with the lower part of the middle section of the extraction pipe, and the water collecting tank is communicated with the water tank through the water conduit; the refrigeration assembly comprises a compressor, a condenser, an expansion valve and an evaporator which are sequentially connected, the evaporator is arranged in the air extraction main pipe, and the evaporator is positioned above the water collecting tank.
8. The fruit and vegetable vacuum pre-cooling device according to claim 1, wherein the air extraction pipe is connected with a drying filter.
9. The fruit and vegetable vacuum pre-cooling apparatus according to claim 1, wherein the water guide pipe is connected with an ultraviolet sterilizer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410052863.7A CN117562117B (en) | 2024-01-15 | 2024-01-15 | Fruit and vegetable vacuum precooling equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410052863.7A CN117562117B (en) | 2024-01-15 | 2024-01-15 | Fruit and vegetable vacuum precooling equipment |
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| CN117562117A true CN117562117A (en) | 2024-02-20 |
| CN117562117B CN117562117B (en) | 2024-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118120810A (en) * | 2024-05-07 | 2024-06-04 | 福州优野生态农业有限公司 | Fruit and vegetable vacuum precooling equipment with high-efficiency water retention |
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| CN117562117B (en) | 2024-03-29 |
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