CN202232770U - Fruit and vegetable pressure-difference precooling device - Google Patents
Fruit and vegetable pressure-difference precooling device Download PDFInfo
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- CN202232770U CN202232770U CN2011203863669U CN201120386366U CN202232770U CN 202232770 U CN202232770 U CN 202232770U CN 2011203863669 U CN2011203863669 U CN 2011203863669U CN 201120386366 U CN201120386366 U CN 201120386366U CN 202232770 U CN202232770 U CN 202232770U
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Abstract
The utility model relates to a fruit and vegetable pressure-difference precooling device. An exhaust outlet of a fan box body (1) placed in a refrigerator is connected with an air duct (2) provided with air outlets (3); each of the air outlets (3) is outwards connected with an air volume adjusting valve (4), a flexible joint (5), a reducing pipe (6) and a vertical bracket (8) in sequence; and each side of the vertical bracket (8) is provided with air supply outlets (7) corresponding to fruit and vegetable boxes (9) one to one when the fruit and vegetable boxes are stacked. By using the fruit and vegetable pressure-difference precooling device, the problems of nonuniform air flow, easiness in causing short circuit of air flow organization and low cold air utilization ratio of the traditional pressure-difference precooling device can be solved, cold air can uniformly flow through each fruit and vegetable box, the precooling speed can be increased, and the pressure-difference precooling time can be shortened.
Description
Technical field
The utility model belongs to the preserving fruit and vegetable utilizing field, relates generally to a kind of precooling freshness retaining treating apparatus of postharvest fruit and vegetable.
Background technology
Fruits and vegetables occupies critical role in the human diet structure; It is the important source of needed by human body vitamin, mineral matter and trace element; Fresh fruits and vegetables are very easily wilted even are rotted; Postharvest fruit and vegetable is carried out the common recognition that fast precooling is domestic and international fresh-keeping boundary, also is an important step of cold chain circulation.Forecooling method has ice precooling, water precooling, vacuum pre-cooling and air precooling etc., and wherein, air precooling can be used for various types of fruits and vegetables, on producing, has obtained extensive use.Air precooling is to utilize the forced convertion of cold air to realize the forecooling method that fruits and vegetables cool off, and whether in an organized way flows through fruits and vegetables according to air-flow and is divided into forced ventilation precooling and two kinds of forms of differential pressure precooling.The forced ventilation precooling is a kind of type of cooling that early adopts, and it is that fruits and vegetables are placed in the high temperature cold storage, utilizes ventilation blower cold air to be forced to flow through the cooling means of fruit and vegetable surfaces.This method is simple, and expense is low, but the drying loss of fruits and vegetables is big, cooling velocity is slow and temperature distributing disproportionation even, occurs freeze injury easily.Differential pressure precooling is a kind of new model of air precooling; It is a swabbing action of utilizing the pressure reduction blower fan; Form certain pressure differential in the both sides of packing container; It is inner that the air vent of cold air on packing container forced through packing container, directly carries out heat exchange with fruit and vegetable surfaces, thereby make article be cooled to the forecooling method of the temperature range of technological requirement fast, equably.
Outstanding advantages such as though the differential pressure precooling initial cost is higher than forced ventilation precooling, palletize is time-consuming, and its cooling velocity is fast make differential pressure precooling obtain developing rapidly and extensive use.Mostly the differential pressure precooling device that uses at present is in common freezer basis, to increase a differential pressure precooling equipment that is made up of plenum chamber and pressure reduction blower fan; Fruit and vegetable box is the perforated plastic fruit case or the carton of the even perforate in two sides relatively normally; Fruit and vegetable box is lined up two and is gone before plenum chamber, central authorities are open aisle, cover above the central aisle and end with oilcloth; Form the tunnel, between plenum chamber and the central tunnel open communication is arranged.When the pressure reduction blower fan is opened, be negative pressure in the plenum chamber, the central tunnel that fruit and vegetable box and oilcloth surrounded also is negative pressure; Under the effect of pressure reduction, the cold air in the freezer flows into central tunnel through the hole of fruit and vegetable box, takes away the heat of fruits and vegetables; Fruits and vegetables are cooled off fast, shown in accompanying drawing 1.In this negative pressure suction-type pressure reduction cooling, because the negative pressure value of position is bigger near the plenum chamber, near more from plenum chamber, air quantity is big more, and the fruits and vegetables temperature drop is fast more, and slower away from the cooling of plenum chamber place fruits and vegetables.In addition; Because the deadweight of fruits and vegetables in the case, carrying vibration and the extruding between the levels when preventing piling; Usually the fruits and vegetables of case inner top all leave the space with case top cover or upper strata case bottom, and this has just formed the level bypass passageways in the cooling procedure of blowing, and have reduced the utilization rate of cold wind through the air quantity of bypass passageways; Reduced cooling velocity, the uneven phenomenon that also can cause fruits and vegetables top layer in the case, middle level, near-bottom temperature to distribute.Precooling problem of non-uniform and pressure system sealing problem are the subject matter that exists in the present differential pressure precooling technology.
Summary of the invention
Purpose of the utility model and task are the deficiencies to prior art; For the postharvest fruit and vegetable precooling freshness retaining provides a kind of new fruits and vegetables differential pressure precooling device; Improve the problem that air-flow in the existing differential pressure precooling device is uneven, air current composition is prone to short circuit, the cold wind utilization rate is low; Make cold air can flow through each fruit and vegetable box equably, improve the precooling cooling velocity, shorten the differential pressure precooling time.
For realizing above-mentioned purpose; The technical scheme that the utility model adopts is: a kind of fruits and vegetables differential pressure precooling device; The exhaust outlet that is placed on the fan box in the freezer is connected to the air channel; Have air outlet on the air channel, each air outlet outwards is connected to volume damper, connecting hose, reducer pipe and stand type support successively, air outlet one to one when each side of stand type support has and stacks with fruit and vegetable box.
Different with existing differential pressure precooling device, what this utility model adopted is that malleation extrudes the formula cooling means.
In above-mentioned, vary in size according to air quantity, fan box can be ceiling mounting type or vertical; The structure of stand type support is relevant with the fruit and vegetable box size; Design according to storehouse, precooling casing quantity and physical dimension, being connected between stand type support and the reducer pipe that different fruit and vegetables case coupling is different, connecting hose and reducer pipe is detachable; After precooling fruit and vegetable box specification changes, can corresponding change stand type support putting with the cooperation fruit and vegetable box.The setting of volume damper can guarantee that the air quantity between different air ports equates, can be because of the big little phenomenon of blower fan end air quantity far away of the far and near different nearly blower fan end air quantity that produce apart from blower fan.
Though the utility model has increased parts such as air channel; Initial cost increases, and negative pressure suction-type differential pressure precooling device complicacy at present is installed also, but it can distribute air quantity equably along the airduct direction; Make cold air can flow through each fruit and vegetable box equably; Can not produce the big and air quantity little phenomenon in blower fan place far away of nearly blower fan place air quantity, and avoid the generation of horizontal bypass flow, improve the problem that air-flow in the existing differential pressure precooling device is uneven, air current composition is prone to short circuit, the cold wind utilization rate is low effectively; Improve cooling velocity, shortened the precooling time.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the utility model;
Fig. 2 is the perspective view of the utility model.
The specific embodiment
See figures.1.and.2, the real novel fruits and vegetables differential pressure precooling device that provides of this practicality, it is mainly by fan box 1, air channel 2; Air outlet 3, volume damper 4, connecting hose 5, reducer pipe 6; Stand type support 8 is formed, and is placed in the common freezer, and wherein, fan box 1 is a ceiling mounting type.Pressure reduction blower fan in the fan box 1 sucks cold wind pressurization back in the freezer and 2 sees off from the air channel, and air outlet 3 quantity on the air channel 2 can be decided as required, and each air outlet 3 below is equipped with volume damper 4, connecting hose 5, reducer pipe 6 and stand type support 8 successively.Through regulating the aperture of volume damper 4, can guarantee that the cold blast rate of seeing off at each air outlet 3 place equates.8 four sides of stand type support have air outlet 7, are square hole, and the size of square hole is less than the corresponding size of fruit and vegetable box 9 and be positioned at the central authorities of fruit and vegetable box, and is corresponding one by one with air outlet 3 when fruit and vegetable box 9 stacks.Like Fig. 1 and Fig. 2, fruit and vegetable box 9 is close to around the stand type support 8.Stand type support 8 over against two fruit and vegetable box about in the of 9 position contacting be not hole but stand type support material entities part, avoided because of there being flowing through of horizontal bypass flow that the space causes between the fruit and vegetable box upper and lower end face.Under the effect of pressure reduction, the cold air that the pressure reduction blower fan in the fan box 1 is seen off in an organized way evenly flows through fruit and vegetable box 9, takes away the heat of fruits and vegetables, and fruits and vegetables are cooled off fast.When reasons such as precooling fruit and vegetable varieties change make that the size of fruit and vegetable box changes, can corresponding replacing reducer pipe 6 and stand type support 8.Being connected between reducer pipe 6 and the connecting hose 5 is detachable, when desire is used storehouse as common freezer not carrying out precooling, also can reducer pipe 6 and stand type support 8 be removed, and does not influence the use of storehouse.
The utility model is not limited to above-mentioned embodiment, and anyone can draw other forms of product under the enlightenment of the utility model.For example stand type support does not adopt the four sides opening, and adopts one side, two sides or three open types; In the pressure reduction fan box, install the evaporimeter of refrigeration system additional and become pressure reduction air-cooler casing; Do not place row's fruit and vegetable box and place the fruit and vegetable box etc. of arranging more along the stand type support side, no matter but on its shape or structure, do any variation, every technical scheme identical or close with the utility model is all within protection domain.
Claims (4)
1. fruits and vegetables differential pressure precooling device; It is characterized in that; The exhaust outlet that is placed on the fan box (1) in the freezer is connected to air channel (2); Have air outlet (3) on the air channel (2), each air outlet (3) outwards is connected to volume damper (4), connecting hose (5), reducer pipe (6) and stand type support (8) successively, and each side of stand type support (8) has and fruit and vegetable box (9) air outlet (7) one to one when stacking.
2. a kind of fruits and vegetables differential pressure precooling device according to claim 1 is characterized in that, being connected between connecting hose (5) and the reducer pipe (6) is detachable.
3. a kind of fruits and vegetables differential pressure precooling device according to claim 1 is characterized in that fan box (1) can be ceiling mounting type or vertical.
4. a kind of fruits and vegetables differential pressure precooling device according to claim 1 is characterized in that stand type support (8) has four orthogonal sides, and the air outlet of each side (7) is square hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203863669U CN202232770U (en) | 2011-10-12 | 2011-10-12 | Fruit and vegetable pressure-difference precooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203863669U CN202232770U (en) | 2011-10-12 | 2011-10-12 | Fruit and vegetable pressure-difference precooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202232770U true CN202232770U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203863669U Expired - Fee Related CN202232770U (en) | 2011-10-12 | 2011-10-12 | Fruit and vegetable pressure-difference precooling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202232770U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104397146A (en) * | 2014-12-08 | 2015-03-11 | 天津商业大学 | Movable differential pressure pre-cooling device with cold source |
| CN104938613A (en) * | 2015-06-01 | 2015-09-30 | 国家农产品保鲜工程技术研究中心（天津） | Movable air duct type mixed-flow variable-frequency fruit and vegetable pre-cooler and application thereof |
| CN105066573A (en) * | 2014-09-30 | 2015-11-18 | 松下冷链（大连）有限公司 | Refrigeration storage box and refrigeration delivery cabinet with same |
| CN105157315A (en) * | 2015-10-26 | 2015-12-16 | 天津商业大学 | Circulation cooling and air supplying refrigerating system of refrigeration houses with multiple storerooms at same temperature |
| CN105145797A (en) * | 2015-09-29 | 2015-12-16 | 北京市农林科学院 | High-humidity variable-air-quantity differential pressure pre-cooling method and device |
| CN106720233A (en) * | 2017-01-07 | 2017-05-31 | 南京财经大学 | A kind of portable agricultural product pre-cooler and forecooling method |
| CN106871544A (en) * | 2017-04-11 | 2017-06-20 | 天津商业大学 | A kind of refrigerating box blast type automated three-dimensional freezer |
-
2011
- 2011-10-12 CN CN2011203863669U patent/CN202232770U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066573A (en) * | 2014-09-30 | 2015-11-18 | 松下冷链（大连）有限公司 | Refrigeration storage box and refrigeration delivery cabinet with same |
| CN105066573B (en) * | 2014-09-30 | 2018-07-13 | 松下冷链（大连）有限公司 | Refrigeration dispatching cabinet |
| CN104397146A (en) * | 2014-12-08 | 2015-03-11 | 天津商业大学 | Movable differential pressure pre-cooling device with cold source |
| CN104938613A (en) * | 2015-06-01 | 2015-09-30 | 国家农产品保鲜工程技术研究中心（天津） | Movable air duct type mixed-flow variable-frequency fruit and vegetable pre-cooler and application thereof |
| CN105145797A (en) * | 2015-09-29 | 2015-12-16 | 北京市农林科学院 | High-humidity variable-air-quantity differential pressure pre-cooling method and device |
| CN105157315A (en) * | 2015-10-26 | 2015-12-16 | 天津商业大学 | Circulation cooling and air supplying refrigerating system of refrigeration houses with multiple storerooms at same temperature |
| CN106720233A (en) * | 2017-01-07 | 2017-05-31 | 南京财经大学 | A kind of portable agricultural product pre-cooler and forecooling method |
| CN106720233B (en) * | 2017-01-07 | 2023-05-23 | 南京财经大学 | Mobile agricultural product precooling device and precooling method |
| CN106871544A (en) * | 2017-04-11 | 2017-06-20 | 天津商业大学 | A kind of refrigerating box blast type automated three-dimensional freezer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20121012 |