CN210346246U - Composite air conditioner structure for drying grain depot - Google Patents
Composite air conditioner structure for drying grain depot Download PDFInfo
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- CN210346246U CN210346246U CN201921308340.5U CN201921308340U CN210346246U CN 210346246 U CN210346246 U CN 210346246U CN 201921308340 U CN201921308340 U CN 201921308340U CN 210346246 U CN210346246 U CN 210346246U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
Abstract
The utility model relates to a granary air conditioning system especially indicates to be used for the dry combined type air conditioner structure in grain depot. The solar air heat collector comprises a solar air heat collector, a two-stage heat pump system, a rotating wheel dehumidification system and a refrigeration system; the two-stage heat pump system comprises a first-stage heat pump system and a second-stage heat pump system; the rotary wheel dehumidification system comprises an air treatment circulating mechanism and a regeneration air circulating mechanism. The utility model discloses a dry air is prepared to solar energy doublestage heat pump runner dehumidification method that combines together, and the new trend of system passes through the temperature requirement that solar energy air heat collector preheats, heat pump multistage heating furthest's realization regeneration wind, compares in the energy-conserving effect of regeneration wind of electrical heating processing and is showing.
Description
Technical Field
The utility model relates to a granary air conditioning system field especially indicates to be used for the dry combined type air conditioner structure in granary.
Background
In recent years, with the implementation of a series of national policies of benefiting agriculture, the large-scale planting of grains and the increasing area of grains collected by a concentrator are promoted, farmers sell newly harvested wheat without airing, and the quality control of grain warehoused grains is more and more difficult, so that the phenomenon that high-moisture grains are directly warehoused is caused. For grain storage warehouses in most regions of China, in the process of warehousing and storing grains, the space of the grain warehouse with the temperature above the grain surface is affected by the illumination and heat radiation of walls and the top of the warehouse in 6 months, 7 months, 8 months and 9 months, the temperature in the space in the warehouse can be continuously increased, the problems that the grain is difficult to store, easy to mildew and the like are caused, and the grain quality is seriously affected.
At present, most grain depots adopt a civil air conditioner to cool air above grain surfaces, but due to the design and manufacturing characteristics of the civil air conditioner, the phenomenon that phosphine gas seriously corrodes an air conditioner evaporator and a circuit part, dust pollutes and blocks a heat exchanger and a filter screen when grain comes in and goes out, the energy consumption is high, the maintenance is inconvenient and the like, and the service life is short is caused by the factors of inconvenience and the like.
And current air conditioner all directly places in the granary, then directly moves after setting for the temperature, can not effectually carry out zone control to the granary according to factors such as the temperature in the granary, humidity, still need control each air conditioner respectively, and it is inconvenient to use, and grain storage effect is not good. In order to ensure the safe storage of the grains, the grains must be dried moderately, and the existing drying method, such as drying by a dryer, consumes a large amount of fossil energy, is high in cost, and natural ventilation drying is long in time consumption and is greatly influenced by external environmental weather factors. Although the dehumidification and drying technology by a condensation method can also meet the drying requirements of grains, the equipment has high operation cost, low efficiency under the conditions of high humidity and large air volume, inconvenient water drainage during operation and the like.
SUMMERY OF THE UTILITY MODEL
The utility model provides a combined type air conditioner structure for grain depot is dry has solved the technical problem who utilizes solar energy doublestage heat pump runner system rapid draing high moisture granary.
The technical scheme of the utility model is realized like this:
the composite air conditioning structure for drying the grain depot comprises a solar air heat collector, a two-stage heat pump system, a rotating wheel dehumidification system and a refrigeration system; the two-stage heat pump system comprises a first-stage heat pump system and a second-stage heat pump system, wherein the first-stage heat pump system comprises a compressor I, an air-cooled condenser I, an expansion valve I and an air-cooled evaporator I, and the second-stage heat pump system comprises a compressor II, an air-cooled condenser II, an expansion valve II and an air-cooled evaporator II; the rotating wheel dehumidification system comprises an air treatment circulating mechanism and a regeneration air circulating mechanism, the air treatment circulating mechanism comprises an air cooling evaporator III, a primary rotating wheel dehumidifier, an air cooling evaporator IV and an electric heater I, the regeneration air circulation comprises a solar air heat collector, an air cooling condenser I, an air cooling evaporator II, an electric heater II and a primary rotating wheel dehumidifier, and the refrigeration system comprises a compressor III, an air cooling condenser III, a liquid storage device, an expansion valve III, an expansion valve IV, an air cooling evaporator III and an air cooling evaporator IV.
The outlet of the solar air heat collector is divided into two paths, one path is mixed with hot air heated by the air-cooled condenser III, and the other path is used for preheating regenerated air.
In the two-stage heat pump system, an outlet I of a compressor in the first-stage heat pump system is connected with an air-cooled condenser I, the air-cooled condenser I is connected with an air-cooled evaporator I through an expansion valve I, the air-cooled evaporator I is connected with the compressor I, an outlet II of the compressor in the second-stage heat pump system is connected with an air-cooled condenser II, the air-cooled condenser II is connected with an air-cooled evaporator II through an expansion valve II, the air-cooled evaporator II is connected with the compressor II, the air-cooled evaporator I, the air-cooled evaporator II and the air-cooled condenser III are arranged on the same plane, and the air-cooled evaporator II is arranged on the front side of.
In the air treatment circulation of the rotary wheel dehumidification system, an air cooling evaporator III, a dehumidification section of a primary rotary wheel dehumidifier, an air cooling evaporator IV and an electric heater I are arranged in sequence and are arranged on the same horizontal plane, and heat preservation air ducts are connected between the adjacent evaporators; in the regeneration air circulation, a solar air heat collector, an air-cooled condenser I, an air-cooled evaporator II, an electric heater II and a recovery section of a primary rotary dehumidifier are adjacently and sequentially arranged and are arranged on the same horizontal plane; the primary rotary dehumidifier is a rotary dehumidifier, the devices in the regeneration air circulation and the air treatment circulation are connected by heat preservation air ducts, and the ports of the heat preservation air ducts are driven by fans to supply air.
In the refrigerating system, an outlet of a compressor III is connected with an air-cooled condenser III, an outlet of the air-cooled condenser III is connected with a liquid storage device, the liquid storage device is divided into two paths, one path of the liquid storage device enters an air-cooled evaporator III through an expansion valve III, the other path of the liquid storage device enters an air-cooled evaporator IV through an expansion valve IV, and the air-cooled evaporator III and an outlet of the air-cooled evaporator IV are combined and then return to an inlet of the compressor III.
The working method of the combined type air conditioning structure for drying the grain depot is characterized in that the two-stage heat pump system utilizes the waste heat of hot air which is heated by the air cooling condenser III in the refrigerating system and then mixed with the hot air heated by the solar air collector, and the hot air firstly passes through the air cooling evaporator II and then passes through the air cooling evaporator I after being cooled; in the air treatment circulation, after being mixed, fresh air and indoor return air are cooled and assisted to be dehumidified through an air-cooled evaporator III, then enter a primary rotary dehumidifier to be dehumidified, then enter an air-cooled evaporator IV to be cooled, and finally are treated to the corresponding temperature through an electric heater I; in the regeneration air circulation, fresh air is preheated through a solar air collector, sequentially enters an air-cooled condenser I and an air-cooled condenser II to be heated by a multistage heat pump, enters an electric heating II to be treated to required temperature, then enters a primary runner dehumidifier, then enters an air-cooled evaporator IV to be heated to treatment temperature after coming out, then enters the primary runner dehumidifier, and finally is discharged into the atmosphere.
The utility model discloses in heat pump system theory of operation as follows:
the working principle of the refrigeration cycle system is as follows: the high-temperature high-pressure gas compressed by the compressor III enters the air-cooled condenser III to be condensed and released heat to become high-temperature high-pressure liquid, then the high-temperature high-pressure liquid enters the liquid storage device, a refrigerant from the liquid storage device is divided into two paths, one path of refrigerant enters the air-cooled evaporator III through the expansion valve III, and heat from processing air is absorbed to assist preliminary dehumidification; the other path enters an air-cooled evaporator IV through an expansion valve IV to absorb the heat of the rear air from the primary runner.
The working principle of the double-stage heat pump system is as follows: the double-stage heat pump is formed by two steam compression type circulations, the first stage is a normal-temperature heat pump circulation, the second stage is a high-temperature heat pump circulation, and a large amount of heat of mixed air heated by an air cooling condenser III in a refrigeration system and preheated by a solar air collector is absorbed and pumped into a regeneration air circulation system by the Carnot circulation principle, wherein an air cooling evaporator II of the high-temperature heat pump is arranged on the front side, so that the high condensation temperature of the second-stage high-temperature heat pump can be kept, the heating temperature of regeneration air is improved to the maximum extent, and the heat pump is utilized for heating in a stepped manner by adopting the two-stage heat pump principle, so that the system can be.
The rotating wheel dehumidification system comprises air treatment circulation and regeneration air circulation, wherein in the air treatment circulation, fresh air is cooled and assisted in dehumidification through the air-cooled evaporator I, then enters the rotating wheel for dehumidification, then enters the air-cooled evaporator II for cooling, and finally is treated to corresponding temperature through the electric heater. In the regenerated air treatment circulation, fresh air is heated by the solar air collector, enters the air-cooled condenser I and the air-cooled condenser II for gradient heating, is heated to a required temperature by the electric heater I, enters the primary rotary dehumidifier and is finally discharged into the atmosphere.
The utility model discloses following beneficial effect has:
1. the utility model discloses a dry air is prepared to method that solar energy doublestage heat pump runner dehumidification combined together, realizes the drying in the warehouse of high moisture grain, and the partly solar air heat collector that passes through of regeneration wind preheats, and refrigerating system waste heat and solar air heat collector heat source mix the heating temperature that can effectual improvement heat pump as the heat source of heat pump system evaporimeter. And two-stage heat pumps are adopted for heating, so that the heating temperature of the regenerated air is improved to the maximum extent, and the energy-saving effect of the system is obvious. Contrast sensible heat exchanger system adopts solar energy air heat collector obvious to the great regional advantage of sunshine intensity, and the hot-blast efficiency of heating when sunshine intensity is higher, and the energy-conserving effect of system is higher, and the system that uses sensible heat exchanger does not receive the influence of weather, but heat exchange efficiency is lower relatively, and waste heat recovery efficiency is not high, and energy-conserving effect is less obvious.
2. The utility model discloses the new trend of system passes through the temperature requirement that solar energy air heat collector preheats, heat pump multistage heating furthest's realization regeneration wind, compares in the energy-conserving effect of regeneration wind of electrical heating processing showing, combines runner dehumidification method to obtain low temperature or high temperature drying air, and the lower than that air relative humidity can drop, therefore under the same conditions, the drying efficiency and the fresh-keeping rate of grain are higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 creative efforts.
Fig. 1 is a schematic structural view of the heat pump solution composite type grain warehouse drying system of the present invention.
In the figure, 1 first-stage rotary dehumidifier, 2 electric heater II, 3 compressor II, 4 air-cooled condenser II, 5 expansion valve II, 6 compressor I, 7 air-cooled condenser I, 8 expansion valve I, 9 solar air heat collector, 10 air-cooled condenser III, 11 compressor III, 12 reservoir, 13 air-cooled evaporator II, 14 air-cooled evaporator I, 15 expansion valve III, 16 expansion valve IV, 18 solenoid valves, 17 air-cooled evaporator III, 19 air-cooled evaporator IV, 20 electric heater I.
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 any creative effort belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a composite air conditioning structure for drying grain depots, which includes a solar air heat collector 9, a two-stage heat pump system, a rotary wheel dehumidification system and a refrigeration system; the two-stage heat pump system comprises a first-stage heat pump system and a second-stage heat pump system, wherein the first-stage heat pump system comprises a compressor I6, an air-cooled condenser I7, an expansion valve I8 and an air-cooled evaporator I14, and the second-stage heat pump system comprises a compressor II 3, an air-cooled condenser II 4, an expansion valve II 5 and an air-cooled evaporator II 13; the rotating wheel dehumidification system comprises an air treatment circulating mechanism and a regeneration air circulating mechanism, the air treatment circulating mechanism comprises an air cooling evaporator III 17, a primary rotating wheel dehumidifier 1, an air cooling evaporator IV 19 and an electric heater I20, the regeneration air circulation comprises a solar air heat collector 9, an air cooling condenser I7, an air cooling evaporator II 13, an electric heater II 2 and a recovery section of the primary rotating wheel dehumidifier 1, and the refrigeration system comprises a compressor III 11, an air cooling condenser III 10, a liquid storage device 12, an expansion valve III 15, an expansion valve IV 16, an air cooling evaporator III 17 and an air cooling evaporator IV 19.
The outlet of the solar air heat collector 9 is divided into two paths, one path is mixed with hot air heated by the air-cooled condenser III 10, and the other path is used for preheating regenerated air.
In the two-stage heat pump system, an outlet of a compressor I6 in the first-stage heat pump system is connected with an air-cooled condenser I7, the air-cooled condenser I7 is connected with an air-cooled evaporator I14 through an expansion valve I8, the air-cooled evaporator I14 is connected with the compressor I6, an outlet of a compressor II 3 in the second-stage heat pump system is connected with an air-cooled condenser II 4, the air-cooled condenser II 4 is connected with an air-cooled evaporator II 13 through an expansion valve II 5, the air-cooled evaporator II 13 is connected with the compressor II 3, the air-cooled evaporator I14, the air-cooled evaporator II 13 and the air-cooled condenser III 10 are arranged on the same plane, and the air-cooled evaporator II 13 is arranged on the front.
In the air treatment circulation of the rotary wheel dehumidification system, an air cooling evaporator III 17, a dehumidification section of a primary rotary wheel dehumidifier 1, an air cooling evaporator IV 19 and an electric heater I20 are arranged in sequence and adjacent to each other, are arranged on the same horizontal plane, and are connected by a heat preservation air duct; in the regeneration air circulation, a solar air heat collector 9, an air-cooled condenser I7, an air-cooled evaporator II 13, an electric heater II 2 and a recovery section of a primary rotary dehumidifier 1 are adjacently and sequentially arranged and are arranged on the same horizontal plane; and all the devices in the regeneration air circulation and the air treatment circulation are connected by heat-preservation air channels, and the ports of the heat-preservation air channels are driven by fans to supply air.
In the refrigerating system, an outlet of a compressor III 11 is connected with an air-cooled condenser III 10, an outlet of the air-cooled condenser III 10 is connected with a liquid storage device 12, the liquid storage device 12 is divided into two paths, one path enters an air-cooled evaporator III 17 through an expansion valve III 15, the other path enters an air-cooled evaporator IV 19 through an expansion valve IV 16, and the air-cooled evaporator III 17 and an outlet of the air-cooled evaporator IV 19 are combined and then return to an inlet of the compressor III 11.
The working method of the combined type air conditioning structure for drying the grain depot is characterized in that the double-stage heat pump system utilizes the waste heat of hot air which is heated by the air cooling condenser III 10 in the refrigerating system and then mixed with the hot air heated by the solar air heat collector 9, and the hot air firstly passes through the air cooling evaporator II 13 and then passes through the air cooling evaporator I14 after being cooled; in the air treatment circulation, after being mixed, fresh air and indoor return air are cooled and assisted to be dehumidified through an air-cooled evaporator III 17, then enter a dehumidification section of a primary rotary dehumidifier 1 to be dehumidified, then enter an air-cooled evaporator IV 19 to be cooled, and finally are treated to the corresponding temperature through an electric heater I20; in the regeneration air circulation, fresh air is preheated through the solar air collector 9, sequentially enters the air-cooled condenser I7 and the air-cooled condenser II 4 to be heated by the multistage heat pump, enters the electric heating II 2 to be treated to the required temperature, then enters the recovery section of the one-stage rotary dehumidifier 1, enters the air-cooled evaporator IV 19 to be heated to the treatment temperature after coming out, then enters the one-stage rotary dehumidifier 1, and finally is discharged into the atmosphere.
Specific embodiments of the refrigeration system: in a low-temperature air supply mode, high-temperature and high-pressure gas compressed by the compressor III 11 enters the air-cooled condenser III 10 to be condensed and released to become high-temperature and high-pressure liquid, and then enters the liquid storage device 12, and refrigerant discharged from the liquid storage device is divided into two paths, is throttled and depressurized and then enters the first-stage evaporator air-cooled evaporator III 17. The other path of the air is throttled and cooled by an expansion valve 16 and then enters a secondary evaporator air-cooled evaporator IV 19, and the heat of a condenser III 10 is transferred to fresh air and then mixed with part of hot air heated by a solar heat collector and sent to a heat pump circulating system. In a high-temperature air supply mode, high-temperature and high-pressure gas compressed by the compressor 11 enters the condenser III 10 to be condensed and released to become high-temperature and high-pressure liquid, then the high-temperature and high-pressure liquid enters the liquid storage device 12, and one path of refrigerant discharged from the liquid storage device 12 enters the air-cooled evaporator III 17 after throttling and pressure reduction. The other path closes the solenoid valve 18 and no longer communicates.
The granary low-temperature air treatment specific implementation method comprises the following steps: fresh air is driven by a fan, is cooled and assisted to be dehumidified by an air cooling evaporator III 17, then enters a primary rotary dehumidifier 1 to be dehumidified, then enters a secondary evaporator air cooling evaporator IV 19 to be cooled to dry air with the temperature of about 20 ℃, an electromagnetic valve 18 is opened during the period, an electric heater I20 is closed,
the specific implementation mode of the granary high-temperature treatment air treatment comprises the following steps: fresh air is driven by a fan to be cooled and dehumidified in an auxiliary manner through a primary evaporator air-cooled evaporator III 17, then enters a dehumidification section of the primary rotary dehumidifier 1 to be further dehumidified, is heated to high-temperature dry air at about 45 ℃ through an electric heater I20, and is closed by an electromagnetic valve 18 and a secondary evaporator.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A combined type air conditioner structure for grain depot is dry, its characterized in that: the solar air heat collector comprises a solar air heat collector (9), a two-stage heat pump system, a rotating wheel dehumidification system and a refrigeration system; the two-stage heat pump system comprises a first-stage heat pump system and a second-stage heat pump system, wherein the first-stage heat pump system comprises a compressor I (6), an air-cooled condenser I (7), an expansion valve I (8) and an air-cooled evaporator I (14), and the second-stage heat pump system comprises a compressor II (3), an air-cooled condenser II (4), an expansion valve II (5) and an air-cooled evaporator II (13); the rotating wheel dehumidification system comprises an air treatment circulating mechanism and a regeneration air circulating mechanism, the air treatment circulating mechanism comprises an air cooling evaporator III (17), a primary rotating wheel dehumidifier (1), an air cooling evaporator IV (19) and an electric heater I (20), the regeneration air circulation comprises a solar air heat collector (9), an air cooling condenser I (7), an air cooling evaporator II (13), an electric heater II (2) and a primary rotating wheel dehumidifier (1), the refrigeration system comprises a compressor III (11), an air cooling condenser III (10), a liquid storage device (12), an expansion valve III (15), an expansion valve IV (16), an air cooling evaporator III (17) and an air cooling evaporator IV (19).
2. The composite air conditioning structure for drying grain depots of claim 1, wherein: the outlet of the solar air heat collector (9) is divided into two paths, one path is mixed with hot air heated by the air-cooled condenser III (10), and the other path is used for preheating regenerated air.
3. The composite air conditioning structure for drying grain depots of claim 2, wherein: in the two-stage heat pump system, an outlet of a compressor I (6) in a first-stage heat pump system is connected with an air-cooled condenser I (7), the air-cooled condenser I (7) is connected with an air-cooled evaporator I (14) through an expansion valve I (8), the air-cooled evaporator I (14) is connected with the compressor I (6), an outlet of a compressor II (3) in a second-stage heat pump system is connected with an air-cooled condenser II (4), the air-cooled condenser II (4) is connected with an air-cooled evaporator II (13) through an expansion valve II (5), the air-cooled evaporator II (13) is connected with a compressor II (3), the air-cooled evaporator I (14), the air-cooled evaporator II (13) and the air-cooled condenser III (10) are arranged on the same plane, and the air-cooled evaporator II (13) is arranged on the front side of the air-cooled evaporator I (14).
4. The composite air conditioning structure for drying grain depots of claim 3, wherein: in the air treatment circulation of the rotary wheel dehumidification system, an air cooling evaporator III (17), a primary rotary wheel dehumidifier (1), an air cooling evaporator IV (19) and an electric heater I (20) are arranged in sequence and are arranged on the same horizontal plane, and heat preservation air ducts are connected between the adjacent evaporators; in the regeneration air circulation, a solar air heat collector (9), an air-cooled condenser I (7), an air-cooled evaporator II (13), an electric heater II (2) and a primary rotary dehumidifier (1) are adjacently and sequentially arranged and are arranged on the same horizontal plane; the primary rotary dehumidifier (1) is a rotary dehumidifier, all devices in the regeneration air circulation and the air treatment circulation are connected by heat preservation air ducts, and the ports of the heat preservation air ducts are driven by fans to supply air.
5. The composite air conditioning structure for drying grain depots of claim 4, wherein: in the refrigerating system, an outlet of a compressor III (11) is connected with an air-cooled condenser III (10), an outlet of the air-cooled condenser III (10) is connected with a liquid storage device (12), the liquid storage device (12) is divided into two paths, one path of the liquid storage device enters an air-cooled evaporator III (17) through an expansion valve III (15), the other path of the liquid storage device enters an air-cooled evaporator IV (19) through an expansion valve IV (16), and the air-cooled evaporator III (17) and an outlet of the air-cooled evaporator IV (19) are combined and then return to an inlet of the compressor III (11).
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| CN201921308340.5U CN210346246U (en) | 2019-08-13 | 2019-08-13 | Composite air conditioner structure for drying grain depot |
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| CN201921308340.5U CN210346246U (en) | 2019-08-13 | 2019-08-13 | Composite air conditioner structure for drying grain depot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388815A (en) * | 2019-08-13 | 2019-10-29 | 河南中瑞制冷科技有限公司 | The multi-air condition system and its working method dry for grain depot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388815A (en) * | 2019-08-13 | 2019-10-29 | 河南中瑞制冷科技有限公司 | The multi-air condition system and its working method dry for grain depot |
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