CN215189135U - Differential pressure precooling apparatus - Google Patents

Abstract

The utility model provides a differential pressure precooling apparatus, include: the air conditioner comprises an accommodating cavity, an air return piece, an air cooler, a refrigerating assembly and a precooled object accommodating part for loading precooled objects; the air return piece and the air cooler are both arranged in the accommodating cavity; the accommodating cavity comprises a negative pressure area and a pre-cooling area; the air return piece is separated between the negative pressure area and the pre-cooling area; the air cooler is arranged between the negative pressure area and the pre-cooling area so as to convey the gas in the negative pressure area to the pre-cooling area and generate pressure difference between the negative pressure area and the pre-cooling area. The differential pressure precooling device provided by the utility model can reduce the loss of heat exchange and cooling capacity between the precooling area and the external environment, thereby further reducing the energy consumption; and the utility model discloses a perpendicular air supply mode in the differential pressure precooling apparatus has realized even precooling.

Description

Differential pressure precooling apparatus

Technical Field

The utility model relates to a precooling apparatus field especially relates to a differential pressure precooling apparatus.

Background

If the freshness of the fresh food is preserved in the transportation process, the fresh food becomes a great problem in the transportation process. Taking fresh fruits and vegetables as an example, China is the largest export country of fruits and vegetables in the world, the annual yield of the vegetables accounts for 40% of the total yield of the vegetables in the world, and the pursuit of the public on the quality of the fruits and vegetables is continuously improved along with the continuous development of economy. After the fruits and vegetables are picked, a large amount of field heat and respiratory heat can be accumulated, so that the aging of the fruits and vegetables is accelerated, and the fruits and vegetables are finally rotten and deteriorated. At present, the domestic fruit and vegetable storage and preservation technology is weak, and the transportation rate and the circulation rate are poor, so that billions of tons of fruit and vegetable loss per year is caused, and huge waste is caused to the fruit and vegetable production capacity in China. The huge yield, the demand and the pursuit of the public on the quality of fruits and vegetables determine that China needs to greatly optimize and reform the application of the cold-chain logistics link in the first industry.

In order to reduce the rotting and deterioration conditions of fruits and vegetables after picking, China is optimizing and upgrading the domestic cold chain transportation industry, the first kilometer in cold chain transportation is to carry out quick precooling and cooling on the fruits and vegetables to delay the metabolism of the fruits and vegetables, so that the quality of the fruits and vegetables is maintained, the loss in the transportation process is reduced, and the step is preferably carried out at the first time after picking.

At present, the precooling modes which are actually applied include ice water precooling, vacuum precooling and the like, and certain influence can be caused in the transportation process, for example, the ice water precooling cannot quickly take away heat in a box, and the fruits and vegetables are easy to rot and deteriorate in long-distance transportation due to the humid environment caused by the evaporation of water. In addition, due to the fact that the ice water precooling cannot ensure that the temperature in the box is uniform, the phenomenon that the temperature of part of fruits and vegetables is not balanced with that of other fruits and vegetables is caused, the part of fruits and vegetables are deteriorated, and the whole box of fruits and vegetables is deteriorated.

SUMMERY OF THE UTILITY MODEL

The utility model provides a differential pressure precooling apparatus to solve the problem that the prior art that the above-mentioned provided existed.

The utility model provides a differential pressure precooling apparatus, include: the air conditioner comprises an accommodating cavity, an air return piece, an air cooler, a refrigerating assembly and a precooled object accommodating part for loading precooled objects; the air return piece and the air cooler are both arranged in the accommodating cavity;

the accommodating cavity comprises a negative pressure area and a pre-cooling area; the air return piece is separated between the negative pressure area and the pre-cooling area;

the differential pressure precooling device also comprises an air cooler, a refrigerating assembly and a precooled object accommodating part;

the air cooler is arranged between the negative pressure area and the pre-cooling area so as to convey the gas in the negative pressure area to the pre-cooling area and generate pressure difference between the negative pressure area and the pre-cooling area;

the air outlet of the air cooler is arranged above the precooled object accommodating part;

the refrigerant formed by the refrigerating assembly can exchange heat with the gas conveyed by the air cooler and/or the gas in the negative pressure area;

the air return piece is provided with an air return hole which is communicated between the negative pressure area and the pre-cooling area so as to send the gas in the pre-cooling area back to the negative pressure area under the action of the pressure difference.

Optionally, the method further includes: the conveying part is used for conveying the precooled material accommodating part and precooled materials on the precooled material accommodating part into and out of the precooling area; the conveying part is arranged below the precooled matter accommodating part.

Optionally, the refrigeration assembly comprises a condenser and a compressor; an evaporator is arranged in the air cooler;

the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is directly or indirectly connected with the inlet of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor.

Alternatively to this, the first and second parts may,

the air return hole is positioned at the bottom of the air return piece;

the plurality of air return holes are arrayed in the horizontal direction and the vertical direction;

at least one row of return air holes are arranged in the return air hole row with variable aperture, and the aperture of each return air hole is gradually increased along the direction from the middle position to the edge position in the return air hole row with variable aperture;

at least one row of return air holes is a row of return air holes with variable apertures, and in the row of return air holes with variable apertures, the apertures of the return air holes are gradually increased along the direction from bottom to top.

Optionally, the air conditioner further comprises an air inlet pipeline; an air inlet of the air inlet pipeline is connected with an air outlet of the air cooler; an air outlet of the air inlet pipeline is positioned above the precooled object accommodating part; the air supply mode of escaping from the air inlet pipeline to the precooled object accommodating part is a vertical air supply mode;

the differential pressure precooling device also comprises a flow guide piece;

the flow guide piece is arranged on one side of the air return hole in the horizontal direction so as to guide the air pumped back to the negative pressure area through the air return hole to a flow channel where an air inlet of the air cooler is located.

Optionally, the device also comprises a sterilization and humidification part;

the outlet of the sterilization and humidification part is arranged around the air outlet of the air inlet pipeline;

the sterilization and humidification part comprises an ozone generator and an air humidifier;

the air outlets of the ozone generator and the air humidifier are respectively connected with the ozone pipeline and the atomization humidification pipeline;

wherein:

the ozone pipeline and the atomization humidification pipeline are arranged on the side part of the air inlet pipeline;

or the outlets of the ozone pipeline and the atomization humidification pipeline are connected with the inlet of the ozone water mist pipeline, and the outlet of the ozone water mist pipeline is arranged around the air outlet of the air inlet pipeline.

Optionally, the pre-chill comprises fresh.

Optionally, the system further comprises a control cabinet;

the control cabinet includes at least one sensor including at least one of: a temperature sensor, a humidity sensor and an ozone concentration sensor;

the temperature sensor, the humidity sensor and the ozone concentration sensor are all arranged in the accommodating cavity;

wherein the temperature sensor is disposed within the negative pressure zone;

the humidity sensor and the ozone concentration sensor are both arranged in the pre-cooling area.

Compared with the prior art, the utility model provides a differential pressure precooling apparatus has following beneficial effect:

1. the differential pressure precooling device provided by the utility model is divided into two areas, namely a precooling area and a negative pressure area, through the return air plate; the negative pressure area is formed by suction of the fan, namely, cold air flows to the precooling area from the negative pressure area through the air cooler, and after fresh heat is taken away, the cold air flows back to the negative pressure area through the return air plate and enters the precooling area again due to the pressure difference between the two areas, so that the heat exchange and cold loss between the precooling area and the external environment is reduced, and the energy consumption is further reduced.

2. The utility model discloses in the alternative, because the air outlet of air inlet pipeline is located the top of precooling thing portion of holding, and air-supply line air outlet or the air outlet of air-cooler, precooling thing portion of holding (for example, give birth to the bright basket and pile) and align at the upper center of longitudinal direction to can realize perpendicular air supply mode, even precooling has been realized to the perpendicular air supply mode in the differential pressure precooling apparatus.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an overall structural diagram of a differential pressure precooling apparatus according to an embodiment of the present invention.

Fig. 2 is a front view of a differential pressure precooling apparatus according to an embodiment of the present invention.

Fig. 3 is a side view of a differential pressure precooling apparatus according to an embodiment of the present invention.

Fig. 4 is a front view of a differential pressure precooling apparatus according to an embodiment of the present invention.

Fig. 5 is a structural diagram of a return air member of the differential pressure precooling apparatus according to an embodiment of the present invention.

Description of reference numerals:

1. an air cooler;

2. an air inlet pipeline;

3. a pre-cooling zone;

4. a control cabinet;

5. an ozone concentration sensor;

6. a humidity sensor;

7. a conveying section;

8. an air return member;

9. a reinforcement;

10. a flow guide member;

11. a negative pressure region;

12. an accommodating cavity;

13. a guide rail;

14. a door;

15. an ozone generator;

16. an air humidifier;

17. a compressor;

18. a condenser;

19. a valve;

20. a temperature sensor;

21. a pre-cooled material accommodating section;

22. air return holes;

2201. a first hole;

2202. a second hole;

2203. a third aperture;

2204. a fourth aperture;

2205. a fifth aperture;

23. an ozone pipeline;

24. an atomization and humidification pipeline;

25. an ozone water mist pipeline;

26. a moving assembly;

27. a refrigeration assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected" and the like are to be understood broadly, and may for example be fixedly connected, detachably connected, or integrated; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

As shown in fig. 1 to 4, the utility model provides a differential pressure precooling apparatus, include: the air conditioner comprises an accommodating cavity 12, an air return piece 8, an air cooler 1, a refrigeration assembly 27 and a precooled object accommodating part 21 for loading precooled objects; the air return part 8 and the air cooler 1 are both arranged in the accommodating cavity 12; the accommodating cavity 12 comprises a negative pressure area 11 and a pre-cooling area 3; the air return piece 8 is separated between the negative pressure area 11 and the pre-cooling area 3; in one example, the return air member 8 may be a return plate, and in other examples, the return air member 8 may be any other type of member as long as it can divide the accommodating chamber 12 into two regions. Further, the negative pressure region 11 and the pre-cooling region 3 are both formed by the inner wall of the accommodating cavity 12 and the air return piece 8, in other words, the end of the air return piece 8 is connected with the inner side of the accommodating cavity 12, and the connection mode of the air return piece 8 and the accommodating cavity 12 can be any connection mode; for example, as shown in fig. 1, two reinforcements 9 (the reinforcements 9 may be, for example, reinforcing ribs) are embedded equidistantly at the left foot corner of the air return member 8 along the longitudinal direction, the height of the reinforcements 9 is equal to the position of the air return hole 22 at the highest height of the air return member 8, or the air return member 8 is in interference fit with the accommodating cavity 12, so that the air return member 8 can be clamped at the preset position of the accommodating cavity 12, or a groove having the same thickness as the air return member 8 is formed in the accommodating cavity 12, and two ends of the air return member 8 are disposed in the groove, so as to fix the air return member 8.

The pre-cooled material may be fresh, or may be any other product or article that needs to be pre-cooled, but is not limited thereto. The utility model discloses following use the precooling thing to be the living bright as the example, wherein, precooling thing portion of holding 21 can be for giving birth to bright basket, has the living bright container of a plurality of through-holes promptly, also can be the household utensils that hold of other any forms, can need not the portion of holding even to hold and give birth to bright, directly places promptly on the conveying portion 7 that will mention in the postings. In addition, in the operation process, the holding part can be one or more, and when precooled thing holding part 21 quantity is a plurality of, is a plurality of need closely laminating between the precooled thing holding part 21, can not leave the gap to avoid influencing the precooling effect, thereby can improve the utilization ratio of cold volume effectively. The air cooler 1 is arranged between the negative pressure area 11 and the pre-cooling area 3 to convey the gas in the negative pressure area 11 to the pre-cooling area 3 and generate a pressure difference between the negative pressure area 11 and the pre-cooling area 3; the refrigerant formed by the refrigerating assembly 27 can exchange heat with the gas delivered by the air cooler 1 and/or the gas in the negative pressure region 11; the air return piece 8 is provided with an air return hole 22, and the air return hole 22 is communicated between the negative pressure area and the pre-cooling area so as to send the gas in the pre-cooling area 3 back to the negative pressure area 11 under the action of the pressure difference.

In an example, as shown in fig. 1, the air inlet pipeline 2 is connected with an outlet of an air cooler 1, the air return piece 8 of the precooling area 3 communicated with the negative pressure area 11 is positioned at the lower left side of the precooling area 3, and the central line of the outlet of the air inlet pipeline 2 is arranged at the position of the right side in order to enhance the convection at the right side of the fresh basket. The outlet size of the air intake conduit 2 is preferably 378.5 x 1600 mm.

In one of them embodiment, as shown in fig. 2, the utility model provides a differential pressure precooling apparatus still includes: a conveying unit 7, which may also be referred to as a conveying device, for conveying the pre-cooled material accommodating unit 21 and the pre-cooled material thereon into and out of the pre-cooling zone 3; the transfer unit 7 is disposed below the pre-cooled material accommodating unit 21. Further, the conveying part 7 may be a conveyor belt, for example, as shown in fig. 2, or may be any other conveying method, for example, a conveying robot, a mechanical arm, or the like, which is within the protection scope of the present invention.

Preferably, the total length of the conveyor belt is 3690mm, the length of the inside of the accommodating cavity 12 is 2250mm, and the lengths of the conveyor belts precooled at the inlet and the outlet outside the accommodating cavity 12 are 720 mm.

In an example, taking the conveying part 7 of the present invention as an example of a conveyor belt, the size of the conveyor belt may be 680mm, and both sides of the conveying part 7 may be provided with frames, and the width of the frames may be 60 mm. In order to ensure that cold air does not leak out of the frame edge of the conveying part 7 in the pre-cooling process, the frame edge of the conveying part 7 is hermetically connected with the inside of the accommodating cavity 12, for example, the frame edge can be connected in a welding mode or other sealing modes, and thus, the loss of cold energy in the pre-cooling process is reduced. Further, as shown in fig. 2, this transfer portion 7 can be provided with the removal subassembly (for example universal wheel and directive wheel), be used for the utility model provides a precooling apparatus can remove the function in the field, and this transfer portion 7 also can not be provided with the removal subassembly, promptly transfer portion can be direct with the utility model provides a precooling apparatus is integrated together, sets up in the precooling area as some of precooling apparatus, forms a accommodation space and is used for loading the precooled object.

The utility model provides a differential pressure precooling apparatus still disposes and removes the subassembly to ensure that differential pressure precooling apparatus can remove in the field, can in time refrigerate rapidly with the living bright after picking.

In one embodiment, the refrigeration assembly 27 includes a condenser 18 and a compressor 17; an evaporator is arranged in the air cooler 1; the outlet of the compressor 17 is connected to the inlet of the condenser 18, the outlet of the condenser 18 is directly or indirectly connected to the inlet of the evaporator (not shown in the figure), and the outlet of the evaporator is connected to the inlet of the compressor 17. In other words, the utility model discloses a return air hole 22 and air-cooler 1 and air inlet pipe 2 make negative pressure region 11 and precool and can the fluid intercommunication between the district 2, and then can realize make full use of refrigerating output, reduce the device energy consumption.

In one embodiment, as shown in fig. 4, the return hole is located at the bottom of the return member; the plurality of air return holes are arrayed in the horizontal direction and the vertical direction; at least one row of return air holes are arranged in the return air hole row with variable aperture, and the aperture of each return air hole is gradually increased along the direction from the middle position to the edge position in the return air hole row with variable aperture; at least one row of return air holes is a row of return air holes with variable apertures, and in the row of return air holes with variable apertures, the apertures of the return air holes are gradually increased along the direction from bottom to top. In an example, as shown in fig. 4, taking the air return hole row as an example, the aperture of the first hole 2201, the aperture of the second hole 2202, and the aperture of the third hole 2203 become larger along the direction from the middle position to the edge position; taking the return air holes as an example, the diameters of the second hole 2202, the fourth hole 2204 and the fifth hole 2205 are gradually increased, and the diameters of the return air holes 22 in the last row may preferably be the same. As shown in fig. 4, for example, the first hole 2201 has a hole diameter of 30mm, the fourth hole 2204 has a hole diameter of 35mm, the third hole 2203 has a hole diameter of 40mm, and the like. Wherein, the pitch between the plurality of return air holes 22 is preferably 100 mm. The aperture refers to the diameter of the orifice of the return air hole. The above-mentioned setting mode to the aperture size of return air hole is because the efficiency of considering that the convection heat transfer is different in the different positions of giving birth to the bright basket in precooling district 3, so in order to strengthen the heat transfer in the area that convection heat transfer is weak, adopted the mode of inhomogeneous trompil, as shown in fig. 4, trompil diameter range is from 30 to 45mm inequality, wholly adopts cascaded distribution. In addition, cold air can flow better from bottom to top conveniently, and the sizes of the air return holes in the last row at the bottom are set to be the same, so that air at the bottom of the precooling area can be smoothly pumped out through the air return holes 8 and flows to the negative pressure area.

In one embodiment, the differential pressure precooling apparatus further includes an air inlet pipeline 2, and an air inlet of the air inlet pipeline 2 is connected with an air outlet of the air cooler 1; the air outlet of the air inlet pipeline 2 is positioned above the precooled object accommodating part 21; the air supply mode of escaping from the air intake duct 2 to the pre-cooled material accommodating portion 21 is a vertical air supply mode; the differential pressure precooling device also comprises a flow guide part 10; the flow guide member 10 is used for shielding the corner of the negative pressure area, and one side of the flow guide member 10 in the horizontal direction of the return air hole 22; so as to guide the air pumped back to the negative pressure region 11 through the air return hole 22 to the flow channel where the air inlet of the air cooler 1 is located. Further, as shown in fig. 2, preferably, the conveying unit 7 may be provided with a mark position of each row of the pre-cooled material accommodating units 21, for example, a mark position for placing fresh baskets, and the fresh baskets are placed according to the mark position, so as to ensure that the air inlet pipeline 2 and the pre-cooled material accommodating units (for example, a stack of fresh baskets) are aligned with each other in the longitudinal direction, so as to ensure the utilization efficiency of cold air in the pre-cooling process.

In one example, as shown in fig. 1, a flow guide member 10 is disposed at a vertical corner in the negative pressure region 11, and the flow guide member 10 is preferably a wind guide baffle plate. The existence of the flow guide piece 10 can reduce the pressure bearing of the containing cavity 12 and the dynamic pressure loss of cold air after entering the negative pressure area 11, and simultaneously, the purpose of reducing the energy consumption of the air cooler 1 is achieved.

In one embodiment, the differential pressure precooling apparatus provided by the present invention further comprises a sterilization and humidification unit; the outlet of the sterilization and humidification part is arranged around the air outlet of the air inlet pipeline 2; the sterilization and humidification part comprises an ozone generator 15 and an air humidifier 16; the air outlets of the ozone generator 15 and the air humidifier 16 are respectively connected with the ozone pipeline 23 and the atomization humidification pipeline 24; wherein: the ozone pipeline 23 and the atomization humidification pipeline 24 are both arranged on the side part of the air inlet pipeline 2; or, the differential pressure precooling device comprises the ozone pipeline 23, the atomization humidification pipeline 24 and the ozone water mist pipeline 25, and outlets of the ozone pipeline 23 and the atomization humidification pipeline 24 are connected to an inlet of the ozone water mist pipeline 25; so that the ozone and the water mist can be fully mixed and then flow into the fresh basket pile through the ozone water mist pipeline 25; the ozone water mist pipeline 25 is arranged around the air outlet of the air inlet pipeline 2. The air humidifier 16 is preferably an ultrasonic air humidifier.

In one example, the ozone generator 15 and the air humidifier 16 are both located at the upper left corner of the receiving chamber 12. The export setting of ozone water smoke pipeline 25 is on air-supply line 2 export right side, all pipelines in the utility model preferably use corrosion-resistant aluminium foil steel pipe.

In one embodiment, the side of the accommodating cavity 12 is provided with an access door, so that later maintenance, disassembly and replacement are facilitated.

Further, the ozone generator 15 and the air humidifier 16 respectively send ozone and water mist into the pre-cooling area 3, cold air enters from the air inlet pipeline 2, and after heat exchange is carried out between the pre-cooling area 3 and fresh air, the cold air is pumped into the negative pressure area 11 through the air return opening of the air return piece 8 due to the pressure difference between the two sides of the air return piece 8, so that rapid sterilization differential pressure pre-cooling is realized.

In one embodiment, the differential pressure precooling apparatus provided by the present invention further includes a moving assembly 26; the moving assembly 26 is disposed at the bottom of the receiving cavity 12. The moving assembly 26 is preferably a universal wheel and an orientation wheel, or the moving assembly 26 may also be any other type of wheel hub or movable member capable of moving, so as to facilitate the movement of the pre-cooling device in the field.

In one embodiment, the utility model provides a differential pressure precooling apparatus in the precooling thing includes living bright. The fresh food is preferably fruits and vegetables.

In one embodiment, the utility model provides a differential pressure precooling apparatus control cabinet 4; the control cabinet 4 comprises a control module; the control module is used for controlling the compressor 17, the air cooler 1, the air humidifier 16 and the ozone generator 15. The control module in the control cabinet 4 can be realized by a PLC control element, so that the purpose of integrated control of the compressor 17, the air cooler 1, the air humidifier 16 and the ozone generator 15 is achieved. Preferably, the compressor 17 and the condenser 18 are disposed at the lower left corner of the accommodating cavity 12 and the left side of the conveying portion 7, an external refrigerant pipeline is attached to the side wall of the accommodating cavity 12, and flows through the throttle valve 19 to enter an evaporator in the air cooler 1 above the accommodating cavity 12 to exchange heat with air, the whole refrigeration assembly 27 is preferably a variable frequency refrigeration unit and is connected with a controller (e.g., a microcontroller) and can be controlled by a control cabinet 4 disposed outside the accommodating cavity 12.

In addition, the operator can adjust suitable refrigerating capacity and amount of wind and wind speed wantonly according to differential pressure precooling apparatus and the switch board that this application provided to when having guaranteed to reduce the device energy consumption, reduce and guarantee the fresh degree of giving birth to bright.

In one embodiment, the control cabinet further comprises a temperature sensor 20, a humidity sensor 6 and an ozone concentration sensor 5; the temperature sensor 20, the humidity sensor 6 and the ozone concentration sensor 5 are all arranged in the accommodating cavity 12; wherein the temperature sensor 20 is arranged within the negative pressure region 11; the humidity sensor 6 and the ozone concentration sensor 5 are both arranged in the pre-cooling zone 3.

Additionally, the utility model discloses a selection of giving birth to bright basket size has been considered to combine conveyer belt width, air-supply line size, 3 space sizes in precooling district and hold multiple factors such as the cavity external reservation conveyer belt length, and it is three according to the one deck to give birth to bright basket pile up the mode to pile two-layer mode, give birth to that the size of a dimension of bright basket is preferred to be 600 300 mm. The upper layer fresh basket is preferably made of plastic materials, the periphery of the upper layer fresh basket is designed in a closed mode, and shed type holes are formed in the bottom of the upper layer fresh basket; so that cold air can smoothly flow from the upper layer fresh basket to the lower layer fresh basket; the lower layer of fresh basket is preferably provided with closed front and back sides and bottom and open left and right sides. Thereby can make cold wind flow in vertical upper strata give birth to bright basket to ensure to flow to the bright basket of lower floor, and when cold wind reachd the bright basket of lower floor, can flow to other bright baskets that give birth to that are close to along the transverse direction and pile, thereby can realize meeting the effect of cold volume of cold in-process make full use of. The range of variation of the vegetable and fruit weight in each batch according to the stacking porosity of different fresh vegetables is preferably 160-200 kg. Furthermore, the height of the opening position of the air return part 8 is lower than that of the lower fresh basket.

In one of them embodiment, the utility model provides a differential pressure precooling apparatus still includes door 14, door 14 sets up and is holding cavity 12 in conveyer belt entry and exit department, hold in the cavity be provided with the corresponding opening of size of door 14, all be provided with guide rail 13 above the opening. Further, the door 14 is preferably a translation door, and correspondingly, the guide rail 13 is preferably a translation guide rail. The door 14 and the guide rail 13 of the present invention may be configured to open or close in a longitudinal direction by way of example, and may be configured to open or close in a lateral direction by way of example, as shown in fig. 3. In another example, the present invention is also applicable to other opening methods, for example, an axially rotating sliding door, etc. is within the protection scope of the present invention. Further, the door 14 preferably adopts a 0.5mm SUS316 stainless steel polyurethane heat insulation board, and after the precooled fresh food is conveyed into the precooling area 3 through the conveyor belt, the inlet and outlet heat insulation translation door is closed, so that the heat insulation of the precooling space is ensured as much as possible.

Further, the material of the accommodating cavity 12 is a heat insulating material. Furthermore, the exterior of the accommodating cavity 12 may adopt light and high-strength galvanized steel as a main frame, and a side beam made of aluminum alloy material or steel material is arranged outside the accommodating cavity, or the side beam is arranged on the main frame; the interior of the accommodating cavity 12 is made of stainless steel; preferably, 0.5mm SUS316 stainless steel polyurethane insulation board is adopted as the insulation material for six surfaces of the accommodating cavity 12, and the size of the whole device is preferably 2100 x 2250 x 2775 mm. The door 14 is preferably made of an aluminum alloy or steel material.

Therefore, the utility model provides a differential pressure precooling apparatus both can realize the precooling apparatus who removes in the field, can refrigerate when carrying out the sterilization to the fruit tree again, and because the utility model provides a size of ozone concentration and water smoke volume can be adjusted to the device, consequently, can be more effective to just picking the effect of carrying out precooling immediately of giving birth to the bright fresh of coming to the realization can guarantee in the transportation that give birth to the bright state still for fresh.

In one embodiment, the control cabinet 4 further comprises at least one sensor, the at least one sensor comprises at least one of a temperature sensor 20, a humidity sensor 6 and an ozone concentration sensor 5, and the control cabinet 4 is installed outside the accommodating cavity 12; the control cabinet 4 comprises a display screen and a microcomputer controller, and the temperature sensor 20, the humidity sensor 6 and the ozone concentration sensor 5 respectively monitor temperature data, humidity data and ozone concentration data in real time and transmit the data to the microcomputer controller; the microcomputer controller receives data from each sensor and analyzes and processes the data; based on the comparison of these data with the preset data, it is determined whether the corresponding components need to be adjusted, e.g., based on the determination, the microcomputer controller determines that the refrigeration assembly 27, the air humidifier 16 and/or the ozone generator 15 need to be adjusted.

In an example, for example, taking ozone as an example, the preset data range of ozone concentration in the microcomputer controller is set to be 15 to 25ppm, after the ozone concentration sensor 5 transmits the data monitored in real time to the microcomputer controller, the microcomputer controller performs judgment processing on the ozone concentration, if the ozone concentration is lower than the lower limit of the preset data range, which is 15ppm in this example, the microcomputer controller will turn on the ozone generator 15, and if the ozone concentration is higher than the upper limit of the set range by 25ppm, the microcomputer controller will turn off the operation of the ozone generator 15, so as to ensure that the ozone concentration in the pre-cooling zone 3 is maintained between 15 to 25 ppm.

In another example, taking humidity as an example, generally, the relative humidity of the air in the pre-cooling zone 3 may not be lower than 80%, and once the relative humidity is lower than this limit, the fresh food is prone to have a significant dry-out phenomenon during the pre-cooling process, resulting in a great decrease in the freshness of the fresh food. Therefore, the set range of the relative humidity in the microcomputer controller is preferably 85 to 95%. After humidity transducer 6 passed back real-time supervision's data microcomputer control ware, microcomputer control ware judges the processing to air relative humidity, if relative air humidity is less than the scope lower limit of setting for, 85% in this example, then air humidifier 16 will be opened to microcomputer control ware, if the scope upper limit that air relative humidity set for, 95% in this example, then lead to the precipitation of steam in the air to condense on giving birth to the bright surface, give birth to the bright easy frostbite, consequently, if relative humidity exceeds the upper limit of presetting the data, then microcomputer control ware will stop air humidifier 16's operation.

In one example, the humidity sensor 6 and the ozone concentration sensor 5 are arranged at the lower right corner of the pre-cooling area 3 and at the right side of the lower layer fresh basket; the temperature sensor 20 is installed in the negative pressure region 11.

The utility model provides a differential pressure precooling apparatus can carry out the disinfection of disinfecting to giving birth to the bright to ensure to have certain humidity after giving birth to the bright picking, prevent the emergence of "dry consumption" phenomenon, ensured the new freshness of giving birth to the bright in the transportation.

The following is to the utility model provides a differential pressure precooling apparatus theory of operation further explains:

here, the precooled objects are used as the fresh objects, the precooled object accommodating part is used as the fresh basket, and the number of the fresh baskets is two layers.

Firstly, cold air gradually flows into an air inlet of the air cooler 1 from the compressor 17 and the condenser 18 through the valve 19, then the cold air flows from an inlet of the air cooler 1 to an air outlet of the air cooler 1 through an evaporator (not shown in the figure) in the air cooler 1, then the cold air flows to a fresh basket loaded on a conveyor belt from the air outlet of the air cooler through the air inlet pipeline 2, the cold air firstly passes through the fresh basket with the periphery sealed on the upper layer and then flows to the fresh basket on the lower layer and flows out through an opening on the side part of the fresh basket on the lower layer, as the air return piece is provided with an air return hole, the cold air then passes through the pressure difference between the negative pressure zone and the pre-cooling zone, the cold air is pumped into the negative pressure zone from the pre-cooling zone through the air return hole, the corner below the negative pressure zone is provided with a flow guide piece 10 which plays a role of guiding the cold air pumped into the negative pressure zone, thereby guiding the cold air to flow into the air inlet of the air cooler from the cold air return hole again, thereby constituting a reflux cycle. In addition, the fresh baskets are loaded in rows when being loaded, a row of two layers of fresh baskets are placed on the external conveyor belt, then the conveyor belt is started, the loaded fresh baskets are firstly sent into the pre-cooling chamber, the previous step is continuously repeated for loading, and three rows of fresh baskets can be accommodated in the pre-cooling chamber. The step loading mode is adopted to reduce the length of the reserved conveyor belt outside the box body and reduce the occupied space of the device so as to reduce the production cost.

In the description of the present invention, it should be understood that the terms "above", "below", "upper", "lower", "upper", "lower surface", "upper surface", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "plurality" means a plurality, such as two, three, four, etc., unless specifically limited otherwise.

In the description herein, references to the terms "an embodiment," "an example," "a specific implementation," "an example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (8)

1. A differential pressure precooling apparatus, comprising: the air conditioner comprises an accommodating cavity, an air return piece, an air cooler, a refrigerating assembly and a precooled object accommodating part for loading precooled objects; the air return piece and the air cooler are both arranged in the accommodating cavity;

the accommodating cavity comprises a negative pressure area and a pre-cooling area; the air return piece is separated between the negative pressure area and the pre-cooling area;

the air cooler is arranged between the negative pressure area and the pre-cooling area so as to convey the gas in the negative pressure area to the pre-cooling area and generate pressure difference between the negative pressure area and the pre-cooling area;

the air outlet of the air cooler is arranged above the precooled object accommodating part;

the refrigerant formed by the refrigerating assembly can exchange heat with the gas conveyed by the air cooler and/or the gas in the negative pressure area;

the air return piece is provided with an air return hole which is communicated between the negative pressure area and the pre-cooling area so as to send the gas in the pre-cooling area back to the negative pressure area under the action of the pressure difference.

2. The differential pressure precooling apparatus of claim 1, further comprising: the conveying part is used for conveying the precooled material accommodating part and precooled materials on the precooled material accommodating part into and out of the precooling area; the conveying part is arranged below the precooled matter accommodating part.

3. The differential pressure precooling apparatus of claim 1, wherein the refrigeration assembly includes a condenser and a compressor; an evaporator is arranged in the air cooler;

the outlet of the compressor is connected with the inlet of the condenser, the outlet of the condenser is directly or indirectly connected with the inlet of the evaporator, and the outlet of the evaporator is connected with the inlet of the compressor.

4. The differential pressure precooling apparatus of claim 2,

the air return hole is positioned at the bottom of the air return piece;

the plurality of air return holes are arrayed in the horizontal direction and the vertical direction;

at least one row of return air holes are arranged in the return air hole row with variable aperture, and the aperture of each return air hole is gradually increased along the direction from the middle position to the edge position in the return air hole row with variable aperture;

at least one row of return air holes is a row of return air holes with variable apertures, and in the row of return air holes with variable apertures, the apertures of the return air holes are gradually increased along the direction from bottom to top.

5. The differential pressure precooling apparatus of claim 2, further comprising an air intake line; an air inlet of the air inlet pipeline is connected with an air outlet of the air cooler; an air outlet of the air inlet pipeline is positioned above the precooled object accommodating part; the air supply mode of escaping from the air inlet pipeline to the precooled object accommodating part is a vertical air supply mode;

the differential pressure precooling device also comprises a flow guide piece;

the flow guide piece is arranged on one side of the air return hole in the horizontal direction so as to guide the air pumped back to the negative pressure area through the air return hole to a flow channel where an air inlet of the air cooler is located.

6. The differential pressure precooling apparatus of claim 2, further comprising a sterilization humidification section;

the outlet of the sterilization and humidification part is arranged around the air outlet of the air inlet pipeline;

the sterilization and humidification part comprises an ozone generator and an air humidifier;

the air outlets of the ozone generator and the air humidifier are respectively connected with the ozone pipeline and the atomization humidification pipeline;

wherein:

the ozone pipeline and the atomization humidification pipeline are arranged on the side part of the air inlet pipeline;

or the outlets of the ozone pipeline and the atomization humidification pipeline are connected with the inlet of the ozone water mist pipeline, and the outlet of the ozone water mist pipeline is arranged around the air outlet of the air inlet pipeline.

7. The differential pressure precooling apparatus of claim 2, wherein the precooler comprises a fresh food.

8. The differential pressure precooling apparatus of claim 2, further comprising a control cabinet;

the control cabinet includes at least one sensor including at least one of: a temperature sensor, a humidity sensor and an ozone concentration sensor;

the temperature sensor, the humidity sensor and the ozone concentration sensor are all arranged in the accommodating cavity;

wherein the temperature sensor is disposed within the negative pressure zone;

the humidity sensor and the ozone concentration sensor are both arranged in the pre-cooling area.

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