CN209972290U - Pressure difference precooling equipment with exchangeable carriage - Google Patents
Pressure difference precooling equipment with exchangeable carriage Download PDFInfo
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- CN209972290U CN209972290U CN201920691539.4U CN201920691539U CN209972290U CN 209972290 U CN209972290 U CN 209972290U CN 201920691539 U CN201920691539 U CN 201920691539U CN 209972290 U CN209972290 U CN 209972290U
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- precooling
- box body
- heat preservation
- pressure difference
- preservation box
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Abstract
The utility model relates to an exchangeable compartment pressure difference precooling device, which comprises a heat preservation box body used for placing fresh agricultural products; the bracket is arranged at the bottom of the heat preservation box body in a sliding manner and is used for supporting the heat preservation box body; the hydraulic or air bag lifting system is used for lifting the heat preservation box body; the variable-frequency refrigerating system is used for providing corresponding cold quantity for the interior of the heat preservation box body according to the requirement; the humidifying and spraying system is used for keeping high relative humidity in the heat preservation box body according to requirements; the pressure difference precooling device is used for carrying out pressure difference precooling on the fresh agricultural products in the heat preservation box body; controlling means, the controlling means electricity is connected frequency conversion refrigerating system, pressure differential precooling apparatus and humidification water-spraying system, the utility model discloses can wide application in cold chain circulation such as fresh agricultural product precooling and transportation such as fruit vegetables, flowers, fungus class and poultry milk use.
Description
Technical Field
The utility model relates to an exchangeable railway carriage or compartment pressure differential precooling is equipped relates to cold chain technical field such as fresh agricultural product precooling and transportation.
Background
Precooling is the first process of a cold-chain circulation technology of fresh agricultural products such as fruits and vegetables, and plays an important role in circulation and preservation of various fresh agricultural products. The pressure difference precooling method is one of common precooling methods, and is a method for quickly precooling fresh agricultural products by taking air as a cooling medium, generating a certain pressure difference on two sides of a precooled fresh agricultural product packaging box through air draft of a pressure difference fan, enabling cold air to directly penetrate into the cooled object packaging box, and forcibly convectively exchanging heat to accelerate the precooling speed of the fresh agricultural products. The method has the advantages of high cooling speed, uniform cooling and wide application range, and is particularly suitable for vegetables, fruits, flowers, fungi and livestock products. The existing precooling is mainly finished by a common cold storage and fresh-keeping warehouse, a special differential pressure ventilation system is not provided, the refrigerating output is small, and the cooling speed is slow and uneven; and the position is fixed and can not be moved, even if a movable differential pressure precooling device is adopted, the device also needs to be hoisted by a crane, and precooling at the production field head is very inconvenient.
Among the prior art of transportation, the transport is given birth to fresh agricultural product and is mostly used refrigerator car and refrigerated container, and refrigerated container is a standardized transport means, and it has sufficient intensity, can use repeatedly for a long time, is applicable to multiple transport mode and transports, but also needs the crane hoist and mount, is difficult to find hoist and mount equipment at the production site, and every standard container all need be equipped with a platform truck head chassis and transports.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a cooling rate is fast, even and need not the exchangeable railway carriage or compartment pressure differential precooling equipment of crane hoist and mount.
In order to achieve the purpose, the utility model adopts the following technical proposal: the utility model provides an exchangeable railway carriage or compartment pressure differential precooling is equipped, should equip and include:
the insulation box body is used for placing fresh agricultural products;
the bracket is arranged at the bottom of the heat preservation box body in a sliding manner and is used for supporting the heat preservation box body;
the hydraulic or air bag lifting system is used for lifting the heat preservation box body;
the variable-frequency refrigerating system is used for providing corresponding cold quantity for the interior of the heat preservation box body according to the requirement;
the humidifying and spraying system is used for keeping high relative humidity in the heat preservation box body according to requirements;
the pressure difference precooling device is used for carrying out pressure difference precooling on the fresh agricultural products in the heat preservation box body;
and the control device is electrically connected with the variable-frequency refrigeration system, the humidifying and spraying system and the differential pressure precooling device.
In the exchangeable carriage differential pressure precooling equipment, preferably, the differential pressure precooling device is fixedly arranged in the heat-preservation box body, and the differential pressure precooling device is fixedly arranged at one side close to the variable-frequency refrigeration system; and placing the fresh agricultural product packaging boxes on two sides of the pressure difference precooling device along the length direction of the heat preservation box body, and forming air return channels in the middle of the fresh agricultural product packaging boxes on the two sides.
The exchangeable box pressure difference precooling equipment preferably corresponds to the air return channel, and an axial flow fan is arranged at the top of the pressure difference precooling device.
The exchangeable compartment pressure difference precooling device is preferably provided with an evaporator on the inner side of an air suction inlet of the pressure difference precooling device corresponding to the air return channel.
The exchangeable compartment pressure difference precooling equipment is characterized in that preferably, an electric roller shutter mechanism is further arranged in the heat preservation box body, the electric roller shutter is fixedly arranged in the height direction of the pressure difference precooling device and is used for placing one side of precooled fresh agricultural products, the electric roller shutter mechanism comprises an electric scroll, tarpaulin and a control button, the electric scroll is driven by a motor, the tarpaulin is arranged on the electric scroll and is used for covering the fresh agricultural products, and the control button is connected with the control device and is used for controlling the motor so as to enable the tarpaulin to be unfolded or folded along with the driving of the motor.
The exchangeable compartment differential pressure precooling equipment is characterized in that preferably, a temperature and humidity sensor and a needle type temperature sensor are further arranged in the heat preservation box body, the temperature and humidity sensor is arranged on the inner side of an air suction opening of the differential pressure precooling device and used for monitoring the temperature and humidity of a precooling environment, the upper portion of a side wall close to a box door side, the needle type temperature sensor is arranged inside the fresh agricultural products and used for monitoring the internal temperature of the fresh agricultural products, and the temperature and humidity sensor and the needle type temperature sensor are both electrically connected with the control device.
The exchangeable compartment pressure difference precooling equipment is characterized in that preferably, a positioning system is further arranged in the heat preservation box body, and the external terminal equipment realizes remote positioning and information collection of the heat preservation box body through the positioning system.
The exchangeable box pressure difference precooling equipment is preferably further provided with a humidification spraying system, the humidification spraying system comprises a water tank, a water pump and humidification nozzles, the humidification spraying system is arranged on the inner side of the heat preservation box body, the water tank and the water pump are fixedly arranged on the outer side of the heat preservation box body, the humidification nozzles are arranged on the side wall of the front end of the heat preservation box body or the pressure difference precooling device, the water inlet of the water pump is connected with the water tank, the water pump is communicated with the humidification nozzles from the water outlet of the water tank, and the water pump is electrically connected with the control device.
The exchangeable compartment pressure difference precooling equipment is characterized in that the support comprises four foldable supports, the four corners of the bottom of the heat preservation box body are provided with the foldable supports, and the side faces of the heat preservation box body are provided with guide rails for storing the foldable supports corresponding to the positions of the foldable supports.
The exchangeable box pressure difference precooling equipment is characterized in that a box door is further arranged at the rear end of the heat preservation box body, so that the fresh agricultural products can enter and exit the heat preservation box body conveniently.
The utility model discloses owing to take above technical scheme, it has following advantage:
1. the utility model is provided with an electric roller shutter mechanism, tarpaulin is arranged on the electric scroll and used for covering fresh agricultural products to be precooled, and the tarpaulin is automatically folded and unfolded, thereby being convenient to operate; an axial flow fan is arranged at the upper part of the differential pressure precooling device inside the heat preservation box body corresponding to the air return channel, so that the cooling speed is high and uniform;
2. the utility model discloses a heat preservation box body adopts the enclosure heat insulation structure railway carriage or compartment body, disposes differential pressure precooling apparatus and frequency conversion refrigerating system, and frequency conversion refrigerating system provides cold volume to the enclosure heat insulation structure railway carriage or compartment body internally; meanwhile, the differential pressure precooling device automatically provides different cooling capacities through an intelligent control system according to precooling temperatures of different fresh agricultural products and different precooling stages, and finally achieves a precooling target temperature;
3. the utility model is provided with a temperature and humidity sensor for measuring the temperature and humidity inside the thermal insulation structure compartment body and a needle type temperature sensor for measuring the temperature inside the fresh agricultural products to be precooled, which can accurately monitor the temperature and humidity inside the precooling box body and the temperature of the center inside the precooling product in real time, and realize the accurate temperature and humidity control of the box body and the temperature control of the product;
to sum up, the utility model discloses can the wide application in the cold chain circulation such as fresh agricultural product precooling and transportation such as fruit vegetables, flowers, fungus class and poultry milk is used.
Drawings
FIG. 1 is a schematic cross-sectional view of an interchangeable compartment differential pressure pre-cooling apparatus of the present invention;
fig. 2 is a schematic top view of the present invention;
fig. 3 is a schematic diagram of the refrigeration system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figures 1-3, the utility model provides an exchangeable railway carriage or compartment pressure differential precooling is equipped, including insulation box 1, hydraulic pressure or gasbag lift system 2, pressure differential precooling apparatus 3, refrigerating system 4, support 5, electronic book curtain mechanism 6, temperature and humidity sensor, pin type temperature sensor, controlling means 7 and humidification spraying system 8.
The hydraulic or air bag lifting system 2 is used for lifting the heat preservation box body 1, specifically, the hydraulic or air bag lifting system 2 is fixedly arranged on a chassis of a vehicle head, automatic loading and unloading of the heat preservation box body 1 are achieved through lifting, and the hydraulic or air bag lifting system is provided with an independent control system.
The refrigerating system 4 can be arranged in the external frame 40 at the front end of the heat preservation box body 1 and is used for providing cold energy for the interior of the heat preservation box body 1, wherein the refrigerating system 4 can adopt a variable frequency refrigerating system and comprises a compressor, a condenser, an electromagnetic valve, an electronic expansion valve, a liquid storage barrel, a gas-liquid separator and other components, and the variable frequency refrigerating system 4 is the prior art and is not described herein any more.
The insulation box body 1 can adopt an enclosure insulation structure compartment body 11, and a differential pressure precooling device 3 is fixedly arranged in the enclosure insulation structure compartment body 11; specifically, the pressure difference precooling device 3 may be fixedly disposed on a side close to the refrigeration system 4, and the pressure difference precooling device 3 is tightly attached to a front end wall of the thermal insulation structure compartment 11 and is disposed at a width center of the thermal insulation structure compartment 11. Along the length direction of the thermal insulation structure compartment body 11, precooling fresh agricultural products 12 are placed on two sides of a suction opening of the differential pressure precooling device 3, an air return channel 13 is formed in the middle of the fresh agricultural products 12 on the two sides, wherein the differential pressure precooling device 3 is provided with components such as an axial flow fan, an evaporator and the like, and an evaporator is arranged on the inner side of an air suction opening of the differential pressure precooling device 3 corresponding to the air return channel.
Electronic roll of curtain mechanism 6, electronic roll of curtain mechanism 6 is fixed to be set up in 3 direction of height of pressure difference precooling apparatus and lie in and place the precooling and give birth to the middle of fresh agricultural product 12 one side and lean on the upper portion, and electronic roll of curtain mechanism 6 includes electronic spool 61, tarpaulin 62 and control button, and electronic spool 61 passes through the motor and drives, and tarpaulin 62 sets up and is used for covering fresh agricultural products such as fruit vegetables on electronic spool 61. The inner wall of the enclosure heat insulation structure compartment body 11 is also provided with a control button, and the control button is connected with a control device and used for controlling the motor so as to enable the tarpaulin 62 to be unfolded or folded along with the driving of the motor. In addition, an axial flow fan 63 is provided on the top of the differential pressure precooling apparatus 3 corresponding to the air return channel 13.
The inside temperature and humidity sensor and the needle type temperature sensor that still are provided with of enclosure insulation structure railway carriage or compartment body 11, temperature and humidity sensor set up and be used for monitoring precooling environment humiture and lean on the side wall upper portion of case door side in the pressure differential precooling apparatus suction opening inboard, and needle type temperature sensor sets up inside the fresh agricultural product for the inside temperature of monitoring fresh agricultural product, wherein, temperature and humidity sensor and the equal electricity of needle type temperature sensor connect 7 controlling means 7, and controlling means 7 monitors and adjusts temperature, humidity and the fresh agricultural product internal environment in the insulation box 1 through temperature and humidity sensor and needle type temperature sensor.
The humidifying spraying system 8 is used for keeping high relative humidity for the interior of the heat preservation box body 1 according to requirements, wherein the high relative humidity means that the relative humidity is controlled to be 90% -100%.
The control device 7 is also used for controlling the refrigerating system 4, the pressure difference precooling device 3 and the humidifying and spraying system 8, so as to realize precooling control of the fresh agricultural products 12, and monitoring and adjusting the precooling environment temperature and humidity and the internal environment of the fresh agricultural products through the temperature and humidity sensor and the needle type temperature sensor.
In the above embodiment, preferably, the exchangeable box pressure difference precooling apparatus is further provided with a humidification spray system 8, the humidification spray system 8 includes a water tank 81, a water pump 82 and a humidification nozzle 83, the humidification spray system 8 is disposed inside the heat preservation box 1, the water tank 81 and the water pump 82 are fixedly disposed outside the heat preservation box 1, the front end side wall of the heat insulation structure box 11 is provided with the humidification nozzle 83, that is, the humidification nozzle 83 is disposed on the same side wall as the cold air inlet, and can also be disposed on the pressure difference precooling apparatus 3, the water inlet of the water pump 82 is connected to the water tank 81, the water outlet of the water pump 82 is connected to the humidification nozzle 83 through a pipeline, the environment inside the heat preservation box 1 can be humidified through the humidification spray system 8 in the precooling process, so as to reduce the water.
In the above embodiments, preferably, the support 5 includes four foldable supports 51, the foldable supports 51 are disposed at four corners of the bottom of the thermal insulation box 1, and corresponding to each foldable support 51, the side surfaces of the thermal insulation box 1 are provided with guide rails 52 for storing the foldable supports 51, and the foldable supports 51 can be disposed in the guide rails 52 during transportation, so as to ensure the safety of transportation.
In the above embodiments, preferably, the rear end portion of the thermal insulation box 1 is further provided with a box door 9, that is, the box door 9 is disposed on the other side of the thermal insulation box 1 facing the placing side of the refrigeration system 4, so as to facilitate the goods entering and exiting from the thermal insulation box 1.
In the above embodiments, preferably, the control device 7 may adopt a PLC or an embedded control device, so as to implement cooperative control of the devices such as the refrigeration system, the humidification spray system, the differential pressure precooling device, and the like, and may select various types of PLCs or embedded control devices that satisfy the signal interaction function, which is not limited herein.
In the above embodiments, preferably, a GPS positioning system may be installed in the thermal insulation box 1, so as to realize interconnection with external terminal communication products such as a mobile phone and a computer, and realize remote positioning and information collection of the thermal insulation box 1.
In the above embodiments, preferably, reinforcing ribs are embedded in the side plates of the thermal insulation box body 1 to increase the strength of the whole box body.
In the above embodiments, preferably, the heat preservation box 1 is provided therein with a machine arrangement room, and the machine arrangement room is used for placing a compressor, a condenser, an electromagnetic valve, an electronic expansion valve, a liquid storage tank, a gas-liquid separator, a control device, a humidification spray system 8 and other devices of the variable frequency refrigeration system.
Adopt the utility model discloses a method that can exchange railway carriage or compartment pressure differential precooling is equipped to carry out precooling fresh agricultural product and transport immediately, concrete process is:
s1: the method comprises the following steps that a vehicle head chassis is arranged and can be matched with a set of exchangeable-box differential pressure precooling equipment and two or three sets of exchangeable-box refrigeration transport boxes to form a precooling and transporting combination, the vehicle head chassis comprises a cab and a chassis, and a hydraulic or airbag lifting system is arranged on the chassis and is used for lifting the exchangeable-box differential pressure precooling equipment and/or the exchangeable-box refrigeration transport boxes;
s2: the interchangeable box pressure difference precooling equipment is pulled to the place where products to be precooled are located through the headstock chassis, the interchangeable box pressure difference precooling equipment is lifted by a hydraulic or air bag lifting system 2 arranged on the headstock chassis, the four foldable supports 51 are opened, the interchangeable box pressure difference precooling equipment is detached, and the headstock chassis is driven away;
s3: connecting an exchangeable-box pressure difference precooling device with a power supply, loading fresh agricultural products such as fruits and vegetables to be precooled into a standard packaging box, stacking the standard packaging box on a standard tray, placing the standard tray on two sides of a return air channel of a pressure difference precooling device, covering tarpaulin, starting a variable-frequency refrigerating system, and enabling the variable-frequency refrigerating system to be in a working state, wherein the specific precooling process is as follows:
aiming at non-cold-sensitive fruit and vegetable products, when a refrigerating unit runs at full load until the precooling temperature of the fresh agricultural products reaches 1/2 of a precooling target temperature, namely when the precooling time reaches 1/2 of the total precooling time, the control device 5 carries out frequency conversion control on the refrigerating system, so that the refrigerating capacity of the refrigerating system is correspondingly reduced, the air supply temperature is unchanged, the air supply speed is reduced, when the precooling time of the fresh agricultural products reaches 7/8 of the total precooling time, the fresh agricultural products basically reach the precooling target temperature, and the precooling is finished;
aiming at the cold-sensitive fruit and vegetable products, the control device 5 controls the full-load operation of the refrigerating system, directly precools to the corresponding precooling target temperature, and finishes precooling;
s4: after the pre-cooling is finished, the pre-cooled fresh agricultural products are moved to a matched exchangeable-box refrigeration transport box waiting nearby, and if the exchangeable-box refrigeration transport vehicle does not return to the place where the pre-cooled products are located, the exchangeable-box refrigeration transport box temporarily refrigerates the pre-cooled fresh agricultural products; if the interchangeable box refrigerated transport vehicle returns to the location of the precooled products, the empty interchangeable box refrigerated transport box is automatically unloaded, the chassis of the vehicle head is opened into the interchangeable box refrigerated transport box which is loaded with precooled and full of fresh agricultural products, and the interchangeable box refrigerated transport box is transported from the precooling production place to the consumption destination; for non-cold-sensitive fruit and vegetable products, the refrigeration transportation temperature is controlled to be 0 ℃; aiming at the cold-sensitive fruit and vegetable products, the refrigeration transportation temperature is controlled to be the appropriate refrigeration and fresh-keeping temperature of the fruit and vegetable products;
s5: and repeating the steps S3-S4 to form a cold chain circulation chain of the fresh agricultural products for precooling and refrigerated transportation.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. An interchangeable compartment pressure differential precooling apparatus, comprising:
the insulation box body is used for placing fresh agricultural products;
the bracket is arranged at the bottom of the heat preservation box body in a sliding manner and is used for supporting the heat preservation box body;
the hydraulic or air bag lifting system is used for lifting the heat preservation box body;
the variable-frequency refrigerating system is used for providing corresponding cold quantity for the interior of the heat preservation box body according to the requirement;
the humidifying and spraying system is used for keeping high relative humidity in the heat preservation box body according to requirements;
the pressure difference precooling device is used for carrying out pressure difference precooling on the fresh agricultural products in the heat preservation box body;
and the control device is electrically connected with the variable-frequency refrigeration system, the differential pressure precooling device and the humidifying and spraying system.
2. The exchangeable compartment pressure difference precooling apparatus of claim 1, wherein the pressure difference precooling apparatus is fixedly disposed in the insulated cabinet, and the pressure difference precooling apparatus is fixedly disposed on a side close to the variable-frequency refrigeration system; and placing the fresh agricultural products on two sides of the differential pressure precooling device along the length direction of the heat preservation box body, and forming an air return channel between the fresh agricultural products on the two sides.
3. The interchangeable box differential pressure precooling apparatus of claim 2, wherein an axial flow fan is disposed on top of the differential pressure precooling apparatus corresponding to the intermediate return air channel, the axial flow fan being electrically connected to the control device.
4. The exchangeable compartment pressure difference precooling apparatus according to claim 1, wherein an electric roller shutter mechanism is further disposed in the heat-insulating box, the electric roller shutter is fixedly disposed in a height direction of the pressure difference precooling apparatus and is used for placing one side of precooled fresh agricultural products, the electric roller shutter mechanism includes an electric reel, a tarpaulin and a control button, the electric reel is driven by a motor, the tarpaulin is disposed on the electric reel and is used for covering the fresh agricultural products, and the control button is connected to the control apparatus and is used for controlling the motor so as to enable the tarpaulin to be unfolded or folded along with the driving of the motor.
5. The exchangeable compartment pressure difference precooling apparatus according to any one of claims 1 to 4, wherein a temperature and humidity sensor and a pin temperature sensor are further arranged in the heat-insulating box, the temperature and humidity sensor is arranged inside an air suction opening of the pressure difference precooling apparatus and used for monitoring the temperature and humidity of a precooling environment, the pin temperature sensor is arranged inside the fresh agricultural products and used for monitoring the internal temperature of the fresh agricultural products, and both the temperature and humidity sensor and the pin temperature sensor are electrically connected to the control device.
6. The exchangeable compartment differential pressure precooling apparatus of any one of claims 1 to 4, wherein a positioning system is further disposed in the heat-insulating box, and an external terminal device realizes remote positioning and information collection of the heat-insulating box through the positioning system.
7. The exchangeable compartment differential pressure precooling apparatus according to any one of claims 1 to 4, wherein the humidification spray system includes a water tank, a water pump and a humidification nozzle, the water tank and the water pump are fixedly disposed outside the heat preservation box body, the humidification spray system is disposed inside the heat preservation box body, the humidification nozzle is disposed on a front end side wall of the heat preservation box body or the differential pressure precooling apparatus, a water inlet of the water pump is connected to the water tank, a water outlet of the water pump is communicated with the humidification spray system through the humidification nozzle, and a working state of the water pump is controlled by the control apparatus.
8. The exchangeable box pressure difference precooling apparatus of any one of claims 1 to 4, wherein the support includes four foldable supports, one foldable support is provided at four corners of the bottom of the incubator body, and a guide rail for storing the foldable support is provided on a side of the incubator body corresponding to each foldable support position.
9. The exchangeable compartment pressure difference precooling apparatus as claimed in any one of claims 1 to 4, wherein a door is further provided at a rear end portion of the incubator body, so that the fresh agricultural products can be conveniently introduced into and removed from the incubator body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691539.4U CN209972290U (en) | 2019-05-15 | 2019-05-15 | Pressure difference precooling equipment with exchangeable carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691539.4U CN209972290U (en) | 2019-05-15 | 2019-05-15 | Pressure difference precooling equipment with exchangeable carriage |
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| Publication Number | Publication Date |
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| CN209972290U true CN209972290U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920691539.4U Active CN209972290U (en) | 2019-05-15 | 2019-05-15 | Pressure difference precooling equipment with exchangeable carriage |
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| Country | Link |
|---|---|
| CN (1) | CN209972290U (en) |
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2019
- 2019-05-15 CN CN201920691539.4U patent/CN209972290U/en active Active
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