CN214892247U - Ternary circulation system low temperature drying device - Google Patents
Ternary circulation system low temperature drying device Download PDFInfo
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- CN214892247U CN214892247U CN202120611884.XU CN202120611884U CN214892247U CN 214892247 U CN214892247 U CN 214892247U CN 202120611884 U CN202120611884 U CN 202120611884U CN 214892247 U CN214892247 U CN 214892247U
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Abstract
The utility model discloses a ternary circulation system low temperature drying device relates to drying equipment technical field. The drying chamber is internally provided with two air deflectors. The drying room is characterized in that a water receiving tray is arranged at the upper end of the air deflector, a dehumidification heat exchange unit is arranged in the water receiving tray, wind deflectors are arranged on the front side and the rear side of the dehumidification heat exchange unit respectively, and the air deflector, the wind deflectors and the dehumidification heat exchange unit divide the inner space of the drying room into a first space, a second space and a third space which are mutually independent. The dehumidification heat exchange unit comprises a first condenser, and a first evaporator and a second evaporator are sequentially arranged on the outer side of the first condenser from top to bottom. And second condensers for supporting the object to be dried are arranged in the first space and the third space. The device can carry out rapid draing to being dried under the low temperature drying environment, not only can ensure the nutritive value of the agricultural product after the drying, can also compromise drying rate simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the drying equipment technique and specifically relates to a ternary circulation system low temperature drying device.
Background
Drying equipment applied to articles such as agricultural products, Chinese herbal medicines and the like is roughly divided into two categories, namely high-temperature drying equipment for generating heat by burning natural gas and an electric heater, and heat pump drying equipment and vacuum freeze drying equipment which utilize refrigeration technology.
Although the initial investment cost of the high-temperature drying equipment of the electric heater which generates heat by burning natural gas is low, the drying temperature is too high, the loss of effective components and nutritional value of the dried object is huge, and even the original value is lost.
The vacuum freeze-drying equipment utilizes the principle of reverse Carnot cycle refrigeration technology to freeze a dried object into ice at low temperature, and then utilizes the principles of heating ice to sublimate under vacuum and capturing water vapor by low-temperature refrigeration, so that the loss of effective components and nutritional value of the dried object is small, but the initial investment is expensive, the operating cost is extremely high, and the vacuum freeze-drying equipment is only commonly applied to special occasions such as microorganisms and medicines at present, but is rarely applied to the fields of agricultural products and Chinese herbal medicines.
The heat pump drying is to collect heat from the ambient atmosphere and to heat the drying object by using the condensing temperature of the condenser of the dehumidifying and drying system. In terms of investment cost, the method is between a high-temperature drying mode and vacuum freeze drying equipment; the loss of active ingredients and nutrients is not as small as that of vacuum freeze drying, but is much smaller than that of a high-temperature drying mode, so that the loss of active ingredients and nutrients is more and more favored by people.
In order to pursue the drying speed of heat pump drying, the heat pump drying is developed in the direction of increasing the drying temperature of the heat pump more and more at present, and the drying temperature of the high-temperature heat pump reaches 85-120 ℃ at present, so that although the drying time is shortened, the operation cost is greatly increased, and the loss of effective components and nutritional value of the dried material is also greatly increased, even exponentially increased.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a ternary circulation system low temperature drying device, the device can carry out rapid draing to being dried under the low temperature drying environment, not only can ensure the nutritive value of the agricultural product after the drying, can also compromise drying speed simultaneously.
The utility model provides a technical scheme that its technical problem adopted is:
a low-temperature drying device of a ternary circulation system comprises a drying chamber, wherein two air deflectors are arranged in the drying chamber, and a plurality of air guide holes are uniformly distributed in the air deflectors;
the upper end of the air deflector is provided with a water receiving disc, a dehumidification heat exchange unit is arranged in the water receiving disc, wind deflectors are arranged on the front side and the rear side of the dehumidification heat exchange unit respectively, and the air deflector, the wind deflectors and the dehumidification heat exchange unit jointly divide the inner space of the drying chamber into a first space, a second space and a third space which are mutually independent;
the dehumidification heat exchange unit comprises a first condenser, and a first evaporator and a second evaporator are sequentially arranged on the outer side of the first condenser from top to bottom;
second condensers for supporting the object to be dried are arranged in the first space and the third space;
the second condenser and the second evaporator which are positioned in the first space are connected with the first refrigerating unit to form a first dehumidification drying system;
the second condenser and the second evaporator which are positioned in the third space are connected with a third refrigerating unit to form a third dehumidification drying system together;
the first condenser and the first evaporator are respectively connected with the second refrigerating unit to form a second dehumidification drying system together;
and a double-air inlet centrifugal fan is arranged at the upper part of the second space.
Furthermore, the air inlet of the double-air-inlet centrifugal fan is over against the dehumidification heat exchange unit.
Furthermore, sealing doors are respectively arranged on the left side and the right side of the drying chamber.
Furthermore, a support frame is arranged between the water pan and the air deflector.
Furthermore, the support frame comprises a rib plate, a first connecting plate is arranged at one end of the rib plate and fixedly connected with the water receiving tray, and a second connecting plate is arranged at the other end of the rib plate and fixedly connected with the air deflector.
Furthermore, an air inlet pipe and an air outlet pipe are respectively arranged on the rear side wall of the drying chamber, control valves are respectively arranged on the air inlet pipe and the air outlet pipe, and the air outlet pipe is connected with a ventilation fan.
Furthermore, the air outlet pipe is communicated with the upper part of the first space, and the air inlet pipe is communicated with the lower part of the third space.
Furthermore, a second maintenance structure is arranged on the rear side of the drying chamber, and the second maintenance structure and the rear side wall of the drying chamber jointly form a closed space for accommodating the first refrigerating unit, the second refrigerating unit and the third refrigerating unit.
Furthermore, the air deflector comprises a base plate, wherein flanges are arranged on four edges of the base plate, and the flanges positioned on the front side, the rear side and the lower side are respectively fixedly connected with the side wall of the drying chamber through screws.
The utility model has the advantages that:
1. the device can dry the dried object in a low-temperature drying environment of 25-35 ℃, and dehumidifies the dried object by utilizing the principle of a refrigeration technology, so that the dried object is quickly dried, the nutritive value of the dried agricultural product can be ensured, and the drying speed can be considered at the same time.
2. The investment cost of the device is equivalent to that of the traditional heat pump drying device, but the operation cost is lower than that of the traditional heat pump drying device, so that the operation cost is reduced, and the energy is saved and the consumption is reduced.
3. The evaporators of the three dehumidification drying systems are all arranged in the drying box, and hot humid air generated by a dried object passes through the evaporators of the three dehumidification drying systems through the double-air-inlet centrifugal fan, so that the dehumidification can be performed quickly, and 100% total heat recovery is performed on waste heat generated by the drying chamber, thereby being beneficial to reducing the energy consumption of the operation of the drying device.
4. The second condenser is in direct contact with the dried object, and the heat conduction and heat exchange efficiency is high.
5. Through setting up ventilation blower, like this, when the measured temperature of drying chamber, relative humidity and set for temperature, relative humidity all are higher than ambient temperature, relative humidity, alright in order to open ventilation blower, make the low humid air of environment low temperature take a breath with drying chamber humid air, not only can shorten drying time effectively, can also reduce the energy consumption.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is a top view of the present invention;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
FIG. 5 is a schematic view of the mounting structure of the wind deflector;
FIG. 6 is an enlarged schematic view of a portion C of FIG. 5;
fig. 7 is a right side view of the present invention and a circulation structure diagram of the third dehumidifying and drying system;
FIG. 8 is a view taken along line K of FIG. 7;
FIG. 9 is a schematic perspective view of an air deflector;
FIG. 10 is a perspective view of the supporting frame;
fig. 11 is a circulation structure view of the second dehumidifying and drying system.
In the figure: 11-a first maintenance structure, 12-an air deflector, 121-a base plate, 1211-an air guide hole, 122-a flanging, 13-a water receiving tray, 141-a first space, 142-a second space, 143-a third space, 15-a second maintenance structure, 16-a sealing door, 171-an air inlet pipe, 172-an air outlet pipe, 18-a support frame, 181-a rib plate, 182-a first connecting plate, 183-a second connecting plate,
21-a first condenser, 22-a second condenser,
31-a first evaporator, 32-a second evaporator,
4-a wind screen, wherein the wind screen is arranged on the upper portion of the wind screen,
5-a double-air inlet centrifugal fan,
61-a first compressor, 62-a first accumulator, 63-a first gas-liquid separator,
71-a second compressor, 72-a second accumulator, 73-a second gas-liquid separator,
81-a third compressor, 82-a third accumulator, 83-a third gas-liquid separator,
9-ventilating fan.
Detailed Description
For convenience of description, a coordinate system is defined as shown in fig. 1, and the left-right direction is taken as a transverse direction, the front-back direction is taken as a longitudinal direction, and the upper direction is taken as a vertical direction.
Example one
As shown in fig. 1, fig. 3 and fig. 7, a ternary circulation system low-temperature drying device includes a drying chamber surrounded by a first maintenance structure 11, where the first maintenance structure 11 is a first maintenance structure 11 used for surrounding the drying chamber in the existing drying equipment, and belongs to the prior art, and the detailed description of the first maintenance structure 11 is not repeated herein.
As shown in fig. 1 and 7, two air deflectors 12 are disposed in the drying chamber, and a plurality of air guiding holes 1211 are uniformly disposed on the air deflectors 12. As a specific implementation manner, as shown in fig. 9, the air guiding plate 12 in this embodiment includes a square base plate 121, and flanges 122 bent toward one side are disposed on four sides of the base plate 121. The flanges 122 at the front, rear and lower sides are respectively fixedly connected to the sidewall of the drying chamber by screws, and the air guide holes 1211 are disposed on the base plate 121.
As shown in fig. 1 and 7, a water pan 13 is fixedly arranged at the upper end of the air deflector 12, a dehumidification heat exchange unit is arranged in the water pan 13, wind deflectors 4 are respectively arranged at the front side and the rear side of the dehumidification heat exchange unit, and the air deflector 12, the wind deflectors 4 and the dehumidification heat exchange unit divide the inner space of the drying chamber into a first space 141, a second space 142 and a third space 143 which are independent of each other from left to right.
As shown in fig. 1, the dehumidifying heat exchange unit includes a first condenser 21, a first evaporator 31, and a second evaporator 32. The upper end of the first condenser 21 is abutted against the upper side wall of the drying chamber, and the outer side of the first condenser 21 is sequentially provided with a first evaporator 31 and a second evaporator 32 from top to bottom. The upper end of the first evaporator 31 is abutted against the upper side wall of the drying chamber, and the lower end of the second evaporator 32 is abutted against the bottom surface of the water pan 13.
As a specific implementation manner, in this embodiment, the upper end and the lower end of the first condenser 21 are respectively and fixedly connected to the upper sidewall of the drying chamber and the bottom surface of the water receiving tray 13. The upper end of the first evaporator 31 is fixedly connected with the upper side wall of the drying chamber, the lower end of the second evaporator 32 is fixedly connected with the bottom surface of the water pan 13, and the lower end of the first evaporator 31 is fixedly connected with the upper end of the second evaporator 32 through screws.
As a specific embodiment, as shown in fig. 4, 5 and 7, the front and rear ends of the water pan 13 respectively abut against the front and rear side walls of the drying chamber. The inner end of the wind shield 4 (the end close to the dehumidifying heat exchange unit is used as the inner end) is fixedly connected with the frames of the first evaporator 31 and the second evaporator 32 through screws respectively, the lower end of the wind shield 4 is abutted against the bottom surface of the water collector 13, and the outer end (the end close to the dehumidifying heat exchange unit is used as the inner end) and the upper end of the wind shield 4 are abutted against the side wall of the drying chamber. As shown in fig. 7, an avoidance notch for avoiding the side plate of the water collector 13 is provided at the lower end of the wind deflector 4.
As shown in fig. 1 and fig. 3, a double-inlet centrifugal fan 5 is disposed at the upper portion of the second space 142, and preferably, an air inlet of the double-inlet centrifugal fan 5 is directly opposite to the dehumidification heat exchange unit, that is, an axis of the air inlet of the double-inlet centrifugal fan 5 coincides with a set center of the dehumidification heat exchange unit.
As a specific implementation manner, in this embodiment, the double-intake centrifugal fan 5 is fixedly disposed on the upper sidewall of the drying chamber.
As shown in fig. 1 and 7, a second condenser 22 for holding the object to be dried is disposed in each of the first space 141 and the third space 143. As a specific embodiment, the second condenser 22 in the present embodiment is a rack condenser.
As shown in fig. 3, a first refrigerator group, a second refrigerator group and a third refrigerator group are respectively disposed at rear sides of the first space 141, the second space 142 and the third space 143.
The third refrigerating unit comprises a third compressor 81, a third liquid accumulator 82 and a third gas-liquid separator 83, and the second condenser 22 and the second evaporator 32 on the right side are connected with the third refrigerating unit through pipelines, valve parts and the like to form a third dehumidification drying system together. As a specific embodiment, as shown in fig. 7, an outlet of the second condenser 22 located on the right side is connected to an inlet of the third accumulator 82 through a pipeline, an outlet of the third accumulator 82 is connected to an inlet of the second evaporator 32 located on the right side through a pipeline, an outlet of the second evaporator 32 is connected to an inlet of the third gas-liquid separator 83 through a pipeline, an outlet of the third gas-liquid separator 83 is connected to an inlet of the third compressor 81 through a pipeline, and an outlet of the third compressor 81 is connected to an inlet of the second condenser 22 located on the right side through a pipeline. And corresponding valve members are arranged on the pipelines. The arrangement of the valve member and the refrigeration principle of the refrigerant belong to the prior art, and are not described in detail herein.
The first refrigerating unit comprises a first compressor 61, a first accumulator 62 and a first gas-liquid separator 63, and the second condenser 22 and the second evaporator 32 positioned on the left side are connected with the first refrigerating unit through pipelines, valves and the like to form a first dehumidification drying system together. The specific connection structure is the same as the third dehumidifying and drying system, and is not described herein again.
The second refrigeration unit comprises a second compressor 71, a second liquid accumulator 72 and a second gas-liquid separator 73, and the first condenser 21 and the first evaporator 31 are connected with the second refrigeration unit through pipelines, valves and the like to form a second dehumidification drying system together. As a specific implementation manner, as shown in fig. 11, in this embodiment, outlets of the two first condensers 21 are respectively connected to inlets of the second accumulator 72 through pipelines, outlets of the second accumulator 72 are respectively connected to inlets of the two first evaporators 31 through pipelines, outlets of the two first evaporators 31 are respectively connected to inlets of the second gas-liquid separator 73 through pipelines, an outlet of the second gas-liquid separator 73 is connected to an inlet of the second compressor 71 through a pipeline, and an outlet of the second compressor 71 is respectively connected to inlets of the two first condensers 21 through pipelines.
Preferably, a second maintenance structure 15 is arranged on the rear side of the drying chamber, and the second maintenance structure 15 and the rear side wall of the drying chamber jointly form a closed space for accommodating the first refrigerating unit, the second refrigerating unit and the third refrigerating unit.
As shown in fig. 3, the left and right sides of the drying chamber are respectively provided with a sealing door 16 for taking in and out goods.
In operation, the sealing doors 16 on both sides of the drying chamber are opened first, and the objects to be dried are placed on the second condenser 22, respectively, and then the sealing doors 16 are closed. Then the equipment is started, the second condensers 22 of the first dehumidification drying system and the third dehumidification drying system directly heat the dried object, the temperature of the dried object is increased after the dried object is heated, and the moisture begins to evaporate into water vapor to become high-humidity hot air. Under the action of the double-inlet centrifugal fan 5, the high-humidity hot air passes through the evaporator (including the first evaporator 31 and the second evaporator 32) and the first condenser 21 in sequence. The evaporator (including the first evaporator 31 and the second evaporator 32) condenses the water vapor into water or ice, then the temperature and the humidity of the hot and humid air are reduced, then the low-temperature and low-humidity air passes through the first condenser 21, the temperature of the low-temperature and low-humidity air is increased, the relative humidity of the low-temperature and low-humidity air is reduced to form low-humidity hot air, and the low-humidity hot air enters a static pressure box formed by the air deflector 12 and the side wall of the drying chamber through the double-air-inlet centrifugal fan 5. Then, the air deflector 12 with multiple holes on two sides sweeps over the second condenser 22, in the process, the low-humidity hot air heats the upper surface of the dried object on the second condenser 22 on one hand, and performs heat and humidity exchange with the humidity hot air in the first space 141 and the third space 143 on the other hand, so that an environment which is more beneficial to the evaporation of the moisture of the dried object after being heated is formed. The above-mentioned circulation is continued, so that the dried material is continuously heated, and the water is continuously evaporated into water vapor, so that the water is continuously lost.
According to the above description, in the drying process of the dried object, the dried object is heated up and down simultaneously, the environment where the dried object is located can be maintained in a uniform heat exchange environment, moisture evaporation of the dried object is facilitated, and rapid drying can be realized in an environment with relatively low temperature (25-35 ℃).
Further, as shown in fig. 2 and 10, the inner ends of the water receiving trays 13 (the end opposite to the two water receiving trays 13 is the inner end) are fixedly connected with the air deflector 12. A support frame 18 is arranged between the water pan 13 and the air deflector 12, the support frame 18 comprises a rib plate 181, and the rib plate 181 is perpendicular to both the water pan 13 and the air deflector 12. One end of the rib plate 181 is provided with a first connecting plate 182 perpendicular to the rib plate 181, and the first connecting plate 182 is fixedly connected with the water pan 13. The other end of the rib plate 181 is provided with a second connecting plate 183 perpendicular to the rib plate 181, and the second connecting plate 183 is fixedly connected with the air deflector 12.
Further, as shown in fig. 7 and 8, an air inlet pipe 171 and an air outlet pipe 172 are respectively disposed on the rear side wall of the drying chamber, and the air outlet pipe 172 is communicated with the first space 141, and the air inlet pipe 171 is communicated with the third space 143. The air inlet pipe 171 and the air outlet pipe 172 are provided with control valves (not shown in the figure) for controlling the on-off of the pipeline, the air outlet pipe 172 is provided with a ventilation fan 9, namely, the air inlet of the ventilation fan 9 is connected with the air outlet pipe 172 of the drying chamber, and the air outlet of the ventilation fan 9 is communicated with the outside.
Preferably, the air inlet pipe 171 is disposed at the lower right corner of the drying chamber, and the air outlet pipe 172 is disposed at the upper left corner of the drying chamber.
In this way, in the drying process, when the ambient temperature and the ambient relative humidity are both lower than the set values of the temperature and the relative humidity in the drying chamber, and the relative humidity of the object to be dried does not reach the set values, the ventilation fan 9 is started. At this time, the low-temperature and low-humidity ambient air enters the drying chamber through the air inlet, and the hot and humid air in the drying chamber is discharged out of the drying chamber by the ventilation fan 9. Along with the low humid air of environment low temperature gets into the drying chamber, then temperature, relative humidity in the drying chamber all appear reducing, when the temperature reaches the condensation temperature value that the lower limit exhaust pressure value that the compressor allows corresponds in the drying chamber, then closes ventilation blower 9, so constantly intermittent type nature stops ventilation system's operation to realized having accelerated by the drying rate of drying thing.
Example two
A supporting plate is arranged between the two air deflectors 12, and the left end and the right end of the supporting plate are respectively fixedly connected with the air deflectors 12. The double-air-inlet centrifugal fan 5 is fixedly arranged on the supporting plate, a mounting hole is formed in the supporting plate, and an air outlet of the double-air-inlet centrifugal fan 5 penetrates through the mounting hole and extends to the lower portion of the supporting plate. The rest of the structure is the same as the first embodiment.
Claims (9)
1. The utility model provides a ternary circulation system low temperature drying device, includes the drying chamber, its characterized in that: the drying chamber is internally provided with two air deflectors which are uniformly provided with a plurality of air guide holes;
the upper end of the air deflector is provided with a water receiving disc, a dehumidification heat exchange unit is arranged in the water receiving disc, wind deflectors are arranged on the front side and the rear side of the dehumidification heat exchange unit respectively, and the air deflector, the wind deflectors and the dehumidification heat exchange unit jointly divide the inner space of the drying chamber into a first space, a second space and a third space which are mutually independent;
the dehumidification heat exchange unit comprises a first condenser, and a first evaporator and a second evaporator are sequentially arranged on the outer side of the first condenser from top to bottom;
second condensers for supporting the object to be dried are arranged in the first space and the third space;
the second condenser and the second evaporator which are positioned in the first space are connected with the first refrigerating unit to form a first dehumidification drying system;
the second condenser and the second evaporator which are positioned in the third space are connected with a third refrigerating unit to form a third dehumidification drying system together;
the first condenser and the first evaporator are respectively connected with a second refrigerating unit to form a second dehumidification drying system together;
and a double-air inlet centrifugal fan is arranged at the upper part of the second space.
2. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: and the air inlet of the double-air inlet centrifugal fan is over against the dehumidification heat exchange unit.
3. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: and sealing doors are respectively arranged on the left side and the right side of the drying chamber.
4. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: and a support frame is arranged between the water pan and the air deflector.
5. The ternary circulation system low-temperature drying device as claimed in claim 4, wherein: the supporting frame comprises a rib plate, a first connecting plate is arranged at one end of the rib plate and fixedly connected with the water receiving tray, a second connecting plate is arranged at the other end of the rib plate and fixedly connected with the air deflector.
6. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: an air inlet pipe and an air outlet pipe are respectively arranged on the rear side wall of the drying chamber, control valves are respectively arranged on the air inlet pipe and the air outlet pipe, and the air outlet pipe is connected with a ventilation fan.
7. The ternary circulation system low-temperature drying device as claimed in claim 6, wherein: the air outlet pipe is communicated with the upper part of the first space, and the air inlet pipe is communicated with the lower part of the third space.
8. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: the rear side of drying chamber is provided with the second dimension and protects the structure, just the second dimension protect the structure with the rear side wall of drying chamber has formed the enclosure space that is used for holding first refrigerating unit, second refrigerating unit and third refrigerating unit jointly.
9. The ternary circulation system low-temperature drying device as claimed in claim 1, wherein: the air deflector comprises a base plate, wherein flanges are arranged on four edges of the base plate, and the flanges positioned on the front side, the rear side and the lower side are fixedly connected with the side wall of the drying chamber through screws respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611884.XU CN214892247U (en) | 2021-03-25 | 2021-03-25 | Ternary circulation system low temperature drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120611884.XU CN214892247U (en) | 2021-03-25 | 2021-03-25 | Ternary circulation system low temperature drying device |
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| Publication Number | Publication Date |
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| CN214892247U true CN214892247U (en) | 2021-11-26 |
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| CN202120611884.XU Active CN214892247U (en) | 2021-03-25 | 2021-03-25 | Ternary circulation system low temperature drying device |
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2021
- 2021-03-25 CN CN202120611884.XU patent/CN214892247U/en active Active
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