CN214307949U - Stacked double-circulation low-temperature drying system - Google Patents
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- CN214307949U CN214307949U CN202120395477.XU CN202120395477U CN214307949U CN 214307949 U CN214307949 U CN 214307949U CN 202120395477 U CN202120395477 U CN 202120395477U CN 214307949 U CN214307949 U CN 214307949U
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Abstract
The utility model belongs to the drying system field, concretely relates to stack formula dual cycle low temperature drying system. The drying system has the functions of forward Carnot cycle heating and reverse Carnot cycle refrigeration and dehumidification. The utility model provides a drying system, include: the air conditioner comprises a first refrigeration system, a second refrigeration system, a circulating fan and an air distribution air deflector; a group of first condenser, a first evaporator and a second evaporator are respectively arranged on two sides of the circulating fan; a first gas-liquid separator and a first refrigeration compressor of the first refrigeration system are sequentially connected with a first condenser; a second gas-liquid separator and a second refrigeration compressor of the second refrigeration system are sequentially connected with a second condenser; the drying chamber is internally provided with an air distribution and guide plate. Adopt the utility model discloses a drying system has following advantage: the material to be dried has high safety and no mildew phenomenon; the loss of nutrient components is less; energy consumption is saved; also has the characteristics of high drying speed, consistent drying speed and environmental protection.
Description
Technical Field
The utility model belongs to the drying system field, concretely relates to stack formula dual cycle low temperature drying system. The drying system has the functions of forward Carnot cycle heating and reverse Carnot cycle refrigeration and dehumidification.
Background
At present, the drying of Chinese herbal medicines, aquatic products, fruits and vegetables and other products mainly adopts several modes of airing, natural drying, natural gas heating and drying, electric heating and drying, heat pump drying, vacuum freeze drying and the like.
The drying process includes that materials to be dried are placed indoors, a fan forced ventilation mode is adopted, outdoor air is introduced into the room, and wet air generated by the materials to be dried in the room is exhausted to the atmosphere, although the drying temperature required by the drying mode is relatively low, loss of nutritional ingredients of the materials to be dried is small, the drying efficiency is low, the drying mode is greatly influenced by weather, in southern areas with high relative humidity and rainy days, and under the condition that outdoor relative humidity is high, drying time is too long, microorganisms such as bacteria and fungi are easy to breed, and the materials to be dried are easy to go moldy under the action of the microorganisms, so that due value is lost.
The natural drying means that the material to be dried is placed in an outdoor natural environment, and the purpose of drying is achieved by evaporating the moisture of the material to be dried by utilizing the radiation heat exchange of the sun. This kind of mode does not need to occupy indoor space with dry the comparison, and the investment cost is lower relatively, but the shortcoming needs a large amount of outdoor open places, and still receives weather environment to influence very big, and day sun shines, and the water smoke is direct to be fallen on waiting to dry the material evening, especially rainy weather, often can cause a large amount of materials of waiting to dry to go mouldy rotten.
The principle of gas drying is similar to that of electric heating drying, the aim of drying is achieved by quickly dehydrating the moisture of the material to be dried by using high temperature, and the difference is that the gas drying is to heat the material to be dried by using the high temperature generated by gas combustion; the electric heating is to heat the material to be dried through the high temperature generated by the electric heating pipe. The loss of nutrient components of the material to be dried in the drying process is directly related to the drying temperature, and the two drying modes have high drying speed and are not influenced by environmental climate, but the effective components and the nutrient value of the material to be dried are almost lost due to overhigh drying temperature. The above-mentioned drying method is not preferable from the viewpoint of nutrition maintenance.
The heat pump drying temperature is higher than airing and natural drying temperature, is not influenced by weather, is slower than natural gas and electric heating drying speed, but the drying temperature is much lower, and the energy utilization coefficient is far higher than natural gas and electric heating drying, but still belongs to one kind of drying, and only the drying temperature is between 50-80 ℃, and the loss of effective components and nutritive value of the material to be dried is relatively small. The most basic principle of drying is that the material to be dried loses water, and currently, although a heat pump drying device for dehumidifying by using a refrigeration system is used, the heat pump drying device does not carry out total heat recovery, so that the energy utilization coefficient is still low in the drying process, and the drying only utilizes a fan to circulate a drying chamber air system to achieve the drying purpose, so that the drying speed is still slow.
The vacuum freeze drying is to freeze the material to be dried fast with the refrigerating system to freeze the material to be dried, to freeze the water content of the material to be dried, to vacuumize the material to be dried with the vacuum pump to make the frozen material to be dried in vacuum state, to sublimate the ice to produce vapor, to condense the vapor with the evaporator of the refrigerating system to maintain the vacuum state of the material to be dried, to ensure the continuous sublimation of the ice to be dried, to dry. When the freezing temperature of the material to be dried reaches-30 ℃, only 97% of water is frozen, and 100% of water of the material to be dried needs to be frozen to reach-60 ℃, so that although the loss of effective components and nutritional components of the dried material is not more than 5%, the energy consumption of the operation of a refrigerating system is extremely high in the drying mode, and the initial investment is expensive due to the vacuum environment, and the energy consumption is high and the initial investment cost is expensive, so that the vacuum freeze drying is only applied to special fields such as medicines, microorganisms and the like at present.
In conclusion, if the bottleneck of the prior art can be overcome, the invention provides the low-temperature drying device which has relatively low drying temperature, is not influenced by the environmental weather in the drying process, has the functions of dehumidification by the evaporator of the refrigeration system and can achieve 100 percent waste heat recovery, can solve the problems of low efficiency and putrefaction and deterioration of the materials to be dried in the traditional drying modes of airing and natural drying, solves the problems of loss of effective components and nutritional value of the materials to be dried in the natural gas and electric heating drying modes, solves the problems of high energy consumption, low drying speed, low efficiency and the like of the existing drying modes caused by high drying temperature of the heat pump drying and incapability of total heat recovery, can solve all the problems of high energy consumption, high initial investment and the like of the vacuum freeze drying operation, and plays a great role in promoting the drying in the fields of Chinese herbal medicines, aquatic products, fruits, vegetables, grains and the like, meanwhile, the method is also beneficial to reducing the expensive cost and investment in the fresh food storage and transportation links.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a low temperature drying system that drying temperature is lower relatively, do not receive environmental weather influence, have the dehumidification of refrigerating system evaporator and can reach 100% waste heat recovery in drying process.
The utility model provides a stack formula dual cycle cryogenic drying system, include: the air conditioner comprises a first refrigeration system, a second refrigeration system, a circulating fan and an air distribution air deflector;
the first refrigeration system includes: the first evaporator is positioned on the two sides of the circulating fan;
the outlet of the first gas-liquid separator is connected with a first refrigeration compressor, and the first refrigeration compressor is divided into two branches which are respectively communicated with first condensers positioned at two sides of the circulating fan;
the first condenser is connected with the first evaporator through a pipeline;
two pipelines at the inlet of the first gas-liquid separator are respectively connected with two first evaporators at two sides of the circulating fan;
the second refrigeration system includes: the second gas-liquid separator, the second refrigeration compressor, the two second condensers and the two second evaporators are positioned on two sides of the circulating fan;
the two second evaporators are respectively positioned below or on either side of the two first evaporators,
the second evaporator on one side is connected with the second condenser, the second evaporator on the other side is also connected with the other second condenser, and the pipelines of the two second condensers are converged and then sequentially connected with the second refrigeration compressor and the second gas-liquid separator; two pipelines at the inlet of the second gas-liquid separator are respectively connected with two second evaporators at two sides of the circulating fan;
the peripheries of the first condenser, the first evaporator, the circulating fan and the second condenser are enclosed into a drying chamber by an enclosure structure; an air distribution air deflector is arranged between the circulating fan and the second condenser, and two ends of the air distribution air deflector are connected with two sides of the enclosure structure.
Preferably, a first throttle valve is respectively arranged on the pipelines between the first evaporator and the first condenser;
preferably, a first high-pressure receiver is respectively arranged on the pipelines between the first condenser and the first evaporator.
Second throttle valves are respectively arranged on pipelines between the second evaporator and the second condenser;
preferably, a second high pressure receiver is provided on each of the pipes between the second evaporator and the second condenser.
Two first condensers and two first evaporators are symmetrically arranged on two sides of the circulating fan from inside to outside in sequence.
Two second evaporators are symmetrically arranged on two sides of the circulating fan, and the second evaporators are respectively located below the two first evaporators.
The two sides of the wind distribution and guide plate are provided with porous plates, and the two ends of the wind distribution and guide plate are provided with sealing plates without holes.
The first condenser is a finned condenser;
preferably, the second condenser is two groups of rack type heat exchangers;
the first evaporator is a finned evaporator;
preferably, the second evaporator is a finned evaporator;
preferably, the second condenser is two groups of flat plate freezers, and the second condenser is positioned at two sides of the air supply outlet of the circulating fan;
preferably, two circulating fans are arranged in the drying chamber.
Regarding the arrangement of the first evaporator and the second evaporator, the arrangement may be as follows:
the first evaporator is positioned above the second evaporator, and the first evaporator is positioned above the second evaporator and shares the supporting structure positioned on the second evaporator;
or the first evaporator is positioned above the second evaporator, and the first evaporator and the second evaporator are provided with a supporting structure of the first evaporator; a supporting structure corresponding to the second evaporator is arranged below the second evaporator;
or the first evaporator is positioned at the second evaporator in parallel, and the first evaporator is positioned at the outer side of the second evaporator.
Preferably, the method for using the stacked dual-cycle cryogenic drying system comprises the following steps:
s1: opening an enclosure structure door of the drying chamber, placing the material to be dried above the second condenser, and then closing the enclosure structure door;
s2: respectively starting a first refrigeration system, a second refrigeration system and a circulating fan, starting the circulating fan to operate, enabling air discharged by the circulating fan to pass through the upper surface of the material to be dried and the lower surface of a second condenser, enabling superheated refrigerant gas discharged by a second refrigeration compressor to enter the second condenser, enabling high-pressure superheated refrigerant gas discharged by the second refrigeration compressor to pass through the second condenser, transferring heat to the material to be dried, and enabling the temperature of the lower part of the material to be dried to be increased;
s3: the high-pressure superheated refrigerant gas is condensed into high-pressure liquid, the high-pressure liquid enters a second high-pressure liquid receiver through a high-pressure refrigeration pipeline, the high-pressure refrigerant liquid from the second high-pressure liquid receiver is throttled and reduced in pressure through a second throttle valve to become low-pressure refrigerant liquid, the low-pressure refrigerant liquid enters a second evaporator, the low-pressure refrigerant liquid is evaporated into low-pressure refrigerant gas after absorbing air blown out by a circulating fan and sweeping hot humid air on the upper surface of a material to be dried and on the lower surface of a second condenser, the temperature and the humidity of the hot humid air are reduced to become low-temperature and low-humidity air, the low-temperature and low-humidity air passes through a first condenser, and the low-temperature and low-humidity air absorbs the heat of the superheated refrigerant gas discharged by a first refrigeration compressor, the temperature of the low-temperature and low-humidity air is increased, the relative humidity is reduced, the low-temperature and relative humidity is sucked by the circulating fan and continuously sweeps across the upper surface of the material to be dried and the lower surface of the second condenser, after the refrigerant of the second condenser transfers heat to the low-temperature and low-humidity air in the first condenser, the refrigerant liquid is changed into high-pressure refrigerant liquid, enters a first high-pressure liquid receiver, is throttled and decompressed by a first throttle valve to be changed into low-pressure refrigerant liquid, enters a first evaporator, and absorbs air blown out by a circulating fan after hot and humid air sweeps over the upper surface of the material to be dried and the lower surface of the circulating fan, the low-pressure refrigerant liquid is evaporated into low-pressure refrigerant gas, the temperature and the humidity of the hot humid air are reduced to be changed into low-temperature and low-humidity air, the low-temperature and low-humidity air is also heated by the first condenser, the low-temperature, low-humidity air absorbs the heat of the superheated refrigerant gas discharged from the first refrigeration compressor, the temperature of the low-temperature, low-humidity air increases, the relative humidity decreases, the material to be dried and the lower surface of the second condenser are continuously swept by the driving of the circulating fan;
s4: the steps of S2 and S3 are circulated continuously, the material to be dried is continuously heated by the low-temperature and humid hot air blown out by the fan and the heat of the second condenser, the moisture of the material is continuously evaporated into hot and humid vapor, in addition, under the action of the air distribution air deflector, the air speed of the air distribution air deflector is stable, the air quantity passing over the dried object is uniform, the drying effect is consistent, and the material is condensed and separated out through the first independent refrigerating system and the second independent refrigerating system evaporator, so that the dried object is dried.
The utility model discloses an application of above-mentioned stack formula dual cycle low temperature drying system in chinese herbal medicine, aquatic products, fruit vegetables are dry also the utility model discloses the scope that will protect.
The beneficial effects of the utility model reside in that:
(1) the material to be dried has high safety and does not have mildew phenomenon:
due to the adoption of the drying system with the heating and dehumidifying functions, the drying process is not influenced by environmental climate, the spoilage problem caused by bacterial growth due to the influence of climate in other drying modes is reduced, and the safety of the material to be dried is improved;
(2) less loss of nutrient components:
because the upper surface and the lower surface of the material to be dried are simultaneously heated, and the double-refrigerating system evaporator dehumidifies and has extremely strong dehumidification capacity, the low-temperature drying can be completely realized, and the effective components and the nutritive value of the material to be dried are effectively reserved;
(3) energy consumption is saved:
in the utility model, on one hand, hot humid air generated by the material to be dried is dehumidified and cooled by the evaporator and then directly enters the condenser for heating and warming, thereby realizing 100 percent heat recovery of the hot humid air generated by the material to be dried; on the other hand, the drying system adopts a double-refrigeration system, and a condenser used for heating and an evaporator used for dehumidifying share one fan, so that the number of the fans is reduced, and the energy conservation of the fans is facilitated;
furthermore, the utility model discloses a drying system still has the characteristics that drying rate is fast, drying rate is unanimous, the environmental protection.
Drawings
FIG. 1 is a schematic view of the operation of the drying system of example 1;
FIG. 2 is a diagram showing the positional relationship between a circulating fan and a condenser and an evaporator in the drying system of example 1;
FIG. 3 is a schematic view of a condenser structure of a second refrigeration system of the drying system of embodiment 1;
fig. 4 is a schematic structural view (same frame) of the first refrigeration system and the second refrigeration system of the drying system of embodiment 1;
fig. 5 is a schematic view (same frame) of the arrangement of the first refrigeration system condenser, the evaporator and the second refrigeration system evaporator of the drying system of embodiment 1;
fig. 6 is a schematic structural view (independent frame) of a second arrangement of the first refrigeration system and the second refrigeration system evaporator of the drying system of embodiment 2;
fig. 7 is a schematic view (independent frame) of a second arrangement of the first refrigeration system condenser, the evaporator and the second refrigeration system evaporator of the drying system of embodiment 2;
fig. 8 is a schematic view showing a third arrangement of the condenser, the evaporator and the evaporator of the first refrigeration system of the drying system of the embodiment 3;
in the figure, 10-first refrigeration system, 101-first refrigeration compressor, 102-first condenser, 103-first throttle valve, 104-first evaporator, 105-first gas-liquid separator, 106-first high-pressure liquid receiver, 20-second refrigeration system, 201-second refrigeration compressor, 202-second condenser, 203-second throttle valve, 204-second evaporator, 205-second gas-liquid separator, 206-second high-pressure liquid receiver, 30-fan, 40-air distribution deflector.
Detailed Description
In order to enable those skilled in the art to better understand the present invention, the present invention will now be described in further detail with reference to the following embodiments.
Example 1
Stacked dual cycle cryogenic drying system comprising: the refrigeration system comprises a first refrigeration system 10, a second refrigeration system 20, two groups of circulating fans 30 and an air distribution air deflector 40; some space is left between the two groups of circulating fans 30;
the first refrigeration system 10 includes: a first gas-liquid separator 105, a first refrigeration compressor 101,
Two first condensers 102 and two first evaporators 104 which are positioned at two sides of the two groups of circulating fans 30 and are symmetrically arranged from inside to outside in sequence;
the outlet of the first gas-liquid separator 105 is connected with a first refrigeration compressor 101, and the first refrigeration compressor 101 is divided into two branches which are respectively communicated with first condensers 102 positioned at two sides of the two groups of circulating fans 30;
the first condenser 102 is connected with the first evaporator 104 through a pipeline; (the two sets of the first condensers 102 are connected to the first evaporators 104 in the same manner.)
Two pipelines at the inlet of the first gas-liquid separator 105 are respectively connected with two first evaporators 104 at two sides of the two groups of circulating fans 30;
the second refrigeration system 20 includes: a second gas-liquid separator 205, a second refrigeration compressor 201, two second condensers 202, and two second evaporators 204 located at two sides of the two sets of circulating fans 30; the two second evaporators 204 are symmetrically arranged on two sides of the two groups of circulating fans 30;
two second evaporators 204 are located below or on either side of the two first evaporators 104,
the second evaporator 204 on one side is connected with the second condenser 202, the second evaporator 204 on the other side is also connected with the other second condenser 202, and the pipelines of the two second condensers 202 are converged and then sequentially connected with the second refrigeration compressor 201 and the second gas-liquid separator 205; two pipelines at the inlet of the second gas-liquid separator 205 are respectively connected with two second evaporators 204 at two sides of the circulating fan 30;
the peripheries of the first condenser 102, the first evaporator 104, the circulating fan 30 and the second condenser 202 are enclosed by an enclosure structure to form a drying chamber 50; an air distribution air deflector 40 is arranged between the circulating fan 30 and the second condenser 202, and two ends of the air distribution air deflector 40 are connected with two sides of the enclosure structure. The air distribution and guide plate 40 is located in the drying chamber, and has porous plates at two sides and sealing plates at two ends.
In the above system, the first condenser 102 is a finned condenser;
the second condenser 202 is two groups of rack type heat exchangers; the second condenser 202 is two groups of flat-plate freezers, and the second condenser 202 is positioned at two sides of the air supply outlet of the circulating fan 30;
the first evaporator 104 is a finned evaporator; the second evaporator 204 is a finned evaporator; the first evaporator 104 is positioned above the second evaporator 204 and shares a support structure (i.e., a frame or frame structure) that is positioned at the second evaporator 204.
FIG. 1 is a schematic diagram of the system of the present invention; other structures of the drying chamber are not shown in fig. 2, and only the positional relationship between the wind distribution deflector 40 and the drying chamber 50 and the circulating fan 30 is shown.
The utility model discloses a stack formula dual cycle cryogenic drying system's structure among foretell embodiment 1 specifically explains a stack formula dual cycle cryogenic drying system's theory of operation:
firstly, a material to be dried is placed on a second condenser 202 (flat plate condenser) in a second refrigeration system 20, then a drying chamber enclosure structure door is closed, the first refrigeration system 10, the second refrigeration system 20 and a circulating fan 30 are respectively started to operate, after the circulating fan 30 starts to operate, exhausted air sweeps over the upper surface of the material to be dried and the lower surface of the second condenser 202 of the second refrigeration system 20, superheated refrigerant gas exhausted by a second refrigeration compressor 201 of the second refrigeration system 20 enters the second condenser 202 of the second refrigeration system 20, at the moment, high-pressure superheated refrigerant gas exhausted by the second refrigeration compressor 201 passes through the second condenser 202, heat is transferred to the material to be dried, the temperature of the lower part of the material to be dried is raised, the high-pressure superheated refrigerant gas is condensed into high-pressure liquid, and enters a high-pressure liquid reservoir through a high-pressure refrigeration pipeline, the high-pressure refrigerant liquid from the high-pressure liquid reservoir is throttled and depressurized by the second throttle valve 203 to become low-pressure refrigerant liquid, and enters the second evaporator 204 of the second refrigeration system 20, the low-pressure refrigerant liquid is evaporated to become low-pressure refrigerant gas after the air blown by the absorption fan sweeps over the upper surface of the material to be dried and the hot humid air on the lower surface of the flat plate condenser of the second refrigeration system 20, and the hot humid air is reduced in temperature and humidity to become low-temperature and low-humidity air, and passes through the first condenser 102 (fin type condenser) of the first refrigeration system 10.
Since the first refrigeration system 10 is also started, the low-temperature and low-humidity air absorbs the heat of the superheated refrigerant gas discharged from the first refrigeration compressor 101 of the first refrigeration system, the temperature of the low-temperature and low-humidity air rises, the relative humidity decreases, the low-temperature and low-humidity air is sucked by the circulating fan 30 and continuously passes through the upper surface of the material to be dried and the lower surface of the second condenser 202 of the second refrigeration system 20, the refrigerant of the first refrigeration system 10 transfers the heat to the low-temperature and low-humidity air in the first condenser 102 and then becomes high-pressure refrigerant liquid, the high-pressure refrigerant liquid enters the high-pressure liquid receiver of the first refrigeration system 10, the refrigerant flows through the second throttle valve 203 of the second refrigeration system 20 and is reduced in pressure to low-pressure refrigerant liquid, the low-pressure refrigerant liquid enters the first evaporator 104 of the first refrigeration system 10, the air blown by the low-pressure refrigerant liquid absorbing fan passes through the hot and wet air on the upper surface of the material to be dried and the lower surface of the second condenser 202 of the second refrigeration system 20, the low-pressure refrigerant liquid is evaporated into low-pressure refrigerant gas, the hot humid air is reduced in temperature and humidity to become low-temperature and low humid air, and is also heated by the first condenser 102 of the first refrigeration system 10, the low-temperature and low humid air absorbs the heat of the superheated refrigerant gas discharged by the first refrigeration compressor 101 of the first refrigeration system 10, the temperature of the low-temperature and low humid air is increased, the relative humidity is reduced, the low-temperature and low humid air continuously passes over the upper surface of the material to be dried and the lower surface of the second condenser 202 of the second refrigeration system 20 under the driving of the fan, the circulation is carried out continuously, the material to be dried is continuously heated by the low-temperature and humid hot air blown out by the fan and the heat of the second condenser 202 of the second refrigeration system 20, and the moisture of the material to be dried is continuously evaporated into hot humid water vapor; in addition, under the action of the air distribution air deflector 40, the air speeds of the two groups of circulating fans 30 are stable, the air quantity of the dried objects is uniform, the drying effect is consistent, and the dried objects are condensed and separated out through the evaporators of the first independent refrigerating system and the second independent refrigerating system, so that the dried objects are dried.
As shown in fig. 2, the first condenser 102 of the first refrigeration system 10, the first evaporator 104 and the second evaporator 204 of the second refrigeration system 20 are respectively divided into two parts according to the heat exchange amount thereof and placed at two sides of the suction opening of the circulating fan 30, so that the single drying amount can be effectively increased and the loading and unloading of goods can be facilitated.
To sum up, the utility model provides a pair of stack formula dual cycle low temperature drying system has following apparent advantage when being applied to material drying such as chinese herbal medicine, aquatic products, fruit vegetables:
firstly, the safety of the material to be dried is high, and no mildew phenomenon occurs:
due to the adoption of the drying system with the heating and dehumidifying functions, the drying process is not influenced by environmental climate, the spoilage problem caused by bacterial growth due to the influence of climate in other drying modes is reduced, and the safety of the material to be dried is improved;
secondly, the nutritive value is high; because the upper surface and the lower surface of the material to be dried are heated simultaneously, and the double-refrigeration system evaporator dehumidifies and has strong dehumidification capacity, the low-temperature drying can be completely realized, the phenomenon that the material to be dried loses nutrient components at high temperature is avoided, and the effective components and the nutrient value of the material to be dried are effectively reserved;
thirdly, the energy consumption is low; on one hand, in the drying process, hot and humid air generated by the material to be dried is dehumidified and cooled by an evaporator and then directly enters a condenser for heating and warming, so that 100% heat recovery of the hot and humid air generated by the material to be dried is realized; on the other hand, the drying system adopts a double-refrigeration system, and a condenser used for heating and an evaporator used for dehumidifying share one fan, so that the number of the fans is reduced, and the energy conservation of the fans is facilitated;
fifthly, the drying speed is high; in the drying process of the material to be dried, the material to be dried is heated up and down simultaneously, so that the evaporation of the water of the material to be dried is facilitated, and the drying speed is high;
sixthly, the drying speed is consistent; the materials to be dried are heated up and down simultaneously, and all points are heated uniformly, so that the drying speed of the materials to be dried is ensured to be consistent;
seventh, environmental protection; in the operation process of the system, closed circulation is completely adopted, and no harmful gas is discharged to the ambient atmosphere, so the system is very environment-friendly.
Above advantage, it is also exactly that traditional drying methods do not possess such as dry, natural drying, gas stoving and electrical heating stoving, heat pump drying, vacuum freeze-drying, the utility model discloses a drying system has overcome above-mentioned drying methods's defect, has apparent progress.
Example 2
The difference from embodiment 1 is that the first evaporator 104 is located above the second evaporator 204 and shares a support structure (i.e., a frame or a frame structure) located at the second evaporator 204 with the second evaporator 204; the rest of the structure is the same as in example 1.
Example 3
The difference from embodiment 1 is that, alternatively, the first evaporator 104 is disposed in parallel with the second evaporator 204, the first evaporator 104 is disposed outside the second evaporator 204, and respective support structures (i.e., frames or frame structures) are disposed below the first evaporator 104 and the second evaporator 204.
Although the preferred embodiments of the present invention have been described above by way of example, the scope of protection of the invention is not limited to the description above, but is defined by all the technical features presented in the attached claims and their equivalents. It will be understood by those skilled in the art that any modifications and variations may be made without departing from the spirit and scope of the teachings of the present invention.
For example, the circulating fans can be arranged into two groups, or can be arranged into one group according to specific requirements; for example, the second condenser may be set as a group, and similar changes fall within the scope of the present invention.
Claims (10)
1. Stacked dual cycle cryogenic drying system, characterized in that, drying system include: the refrigeration system comprises a first refrigeration system (10), a second refrigeration system (20), a circulating fan (30) and an air distribution air deflector (40);
the first refrigeration system (10) comprises: a first gas-liquid separator (105), a first refrigeration compressor (101),
Two first condensers (102) and two first evaporators (104) located on both sides of the circulating fan (30);
the outlet of the first gas-liquid separator (105) is connected with a first refrigeration compressor (101), and the first refrigeration compressor (101) is divided into two branches which are respectively communicated with first condensers (102) positioned at two sides of the circulating fan (30);
the first condenser (102) is connected with the first evaporator (104) through a pipeline;
two pipelines at the inlet of the first gas-liquid separator (105) are respectively connected with two first evaporators (104) at two sides of the circulating fan (30);
the second refrigeration system (20) comprises: a second gas-liquid separator (205), a second refrigeration compressor (201), two second condensers (202), and two second evaporators (204) located on both sides of the circulating fan (30);
two second evaporators (204) are respectively positioned below or on either side of the two first evaporators (104),
the second evaporator (204) on one side is connected with the second condenser (202), the second evaporator (204) on the other side is also connected with the other second condenser (202), and pipelines of the two second condensers (202) are converged and then are sequentially connected with the second refrigeration compressor (201) and the second gas-liquid separator (205); two pipelines at the inlet of the second gas-liquid separator (205) are respectively connected with two second evaporators (204) at two sides of the circulating fan (30);
the peripheries of the first condenser (102), the first evaporator (104), the circulating fan (30) and the second condenser (202) are enclosed into a drying chamber (50) by an enclosure; an air distribution air deflector (40) is arranged between the circulating fan (30) and the second condenser (202), and two ends of the air distribution air deflector (40) are connected with two sides of the enclosure structure.
2. The superimposed dual-cycle cryogenic drying system of claim 1, wherein a first throttle valve (103) is provided on each of the pipes between the first evaporator (104) and the first condenser (102);
a first high-pressure liquid receiver (106) is respectively arranged on the pipeline between the first condenser (102) and the first evaporator (104).
3. The superimposed dual-cycle cryogenic drying system of claim 1, wherein a second throttle valve (203) is provided on each of the pipes between the second evaporator (204) and the second condenser (202);
and second high-pressure liquid reservoirs (206) are respectively arranged on pipelines between the second evaporator (204) and the second condenser (202).
4. The stacked dual-cycle cryogenic drying system of claim 1, wherein two first condensers (102) and two first evaporators (104) are symmetrically arranged on two sides of the circulating fan (30) from inside to outside in sequence.
5. The stacked dual-cycle cryogenic drying system of claim 1, wherein two second evaporators (204) are symmetrically arranged on two sides of the circulating fan (30), and the second evaporators (204) are respectively located below the two first evaporators (104).
6. The stacked dual-cycle cryogenic drying system of claim 1, wherein the air distribution deflector (40) is perforated on both sides and has sealing plates on both ends.
7. The stacked, dual cycle cryogenic drying system of claim 1, wherein the first condenser (102) is a finned condenser;
the second condenser (202) is two groups of rack type heat exchangers;
the first evaporator (104) is a finned evaporator;
the second evaporator (204) is a finned evaporator.
8. The stacked dual cycle cryogenic drying system of claim 1, wherein the second condenser (202) is two sets of plate freezers, the second condenser (202) being located on either side of the discharge opening of the circulating fan (30).
9. A stacked dual cycle cryogenic drying system of claim 1, wherein two circulation fans (30) are disposed within the drying chamber (50).
10. The stacked dual cycle cryogenic drying system of claim 1,
the first evaporator (104) is positioned above the second evaporator (204), and the first evaporator (104) is positioned above the second evaporator (204) and shares a supporting structure positioned on the second evaporator (204) with the second evaporator (204);
or the first evaporator (104) is positioned above the second evaporator (204), and the first evaporator (104) and the second evaporator (204) are provided with a supporting structure of the first evaporator (104); a supporting structure corresponding to the second evaporator (204) is arranged below the second evaporator;
or the first evaporator (104) is positioned in parallel with the second evaporator (204), and the first evaporator (104) is positioned outside the second evaporator (204).
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| CN202120395477.XU CN214307949U (en) | 2021-02-23 | 2021-02-23 | Stacked double-circulation low-temperature drying system |
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| CN202120395477.XU CN214307949U (en) | 2021-02-23 | 2021-02-23 | Stacked double-circulation low-temperature drying system |
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| CN214307949U true CN214307949U (en) | 2021-09-28 |
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