CN112616456A - Special energy-saving air conditioner for granary - Google Patents
Special energy-saving air conditioner for granary Download PDFInfo
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- CN112616456A CN112616456A CN202011401251.2A CN202011401251A CN112616456A CN 112616456 A CN112616456 A CN 112616456A CN 202011401251 A CN202011401251 A CN 202011401251A CN 112616456 A CN112616456 A CN 112616456A
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- granary
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- air circulation
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- air conditioner
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
- A01F25/16—Arrangements in forage silos
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
Abstract
The invention relates to the technical field of grain storage air treatment equipment, in particular to a special energy-saving air conditioner for a grain bin. At present, most grain depots adopt common civil air conditioners to cool grain surface air, but have the problem of high energy consumption, and are not suitable for grain depots. In order to solve the problems, the invention adopts the following technical scheme: an energy-saving air conditioner special for a granary is characterized in that a refrigerant pipeline is sequentially connected with a compressor, a condenser, an expansion valve and an evaporator to form a loop, and a flow guide device capable of guiding evaporator condensate water to a condensate water tank is arranged below the evaporator; the cooling medium pipeline comprises a cooling coil pipe arranged between the condenser and the expansion valve, and the cooling coil pipe passes through the condensed water tank and is coiled in the condensed water tank. In the technical scheme, the cooling coil is cooled for the second time, so that the loss of energy required by cooling is reduced, and the energy-saving effect is achieved.
Description
Technical Field
The invention relates to the technical field of grain storage air treatment equipment, in particular to a special energy-saving air conditioner for a grain bin.
Background
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 common civil air conditioner to cool air above grain surfaces, but due to the design and manufacturing characteristics of the common civil air conditioner, the phenomenon that phosphine gas seriously corrodes an aluminum fin evaporator and a circuit part of an air conditioner copper pipe is easily caused, and the phenomenon that the heat exchanger, a filter screen and grain dehydration are blocked due to dust pollution when grain comes in and goes out, the energy consumption is high, the maintenance is inconvenient and the like, so that the service life is short is caused. Simultaneously, the design evaporating temperature of civilian ordinary air conditioner is far below indoor air dew point temperature, and the capillary is adopted in the refrigerating system throttle, can not the evaporating temperature of accurate control evaporimeter, and the regulation temperature relies on the amount of wind and the wind speed of forced draught blower to accomplish, and such design can rapid cooling and dehumidification, and human cool and comfortable sense is better, but has great defect when being used for the granary cooling, and the reason is as follows: 1. the rapid cooling of the granary or grain pile easily causes the problems of rice waist cracking and grain particle internal cracking; 2. the civil common air conditioner has small air supply quantity, large condensation water quantity in long-term operation, and the grain bin is over-dried due to the loss of a large amount of grain moisture, so that the processing quality is reduced, mainly embodied in the grain bin, and the broken grain rate is higher in processing due to over-drying of surface-layer grains; 3. the granary cooled by using a common air conditioner for a long time can cause the great loss of grain moisture, so that the weight of the grain is reduced, and the direct loss caused by the grain collecting and storing enterprises is large.
The problem of moisturizing the granary is always a great problem to be solved by the granary air conditioner, and a plurality of technical researches are developed around moisturizing the granary air conditioner. For example, the Chinese patent with the publication number of 'CN 211822847U' and the name of a special water-cooling air conditioning unit for a granary discloses a special water-cooling air conditioning unit for the granary, which comprises a refrigeration cycle system, a cooling tower, a circulating water pump, an electric cabinet and a remote operation screen, wherein the electric cabinet is connected with the refrigeration cycle system, the remote operation screen is connected with the electric cabinet through a shielded wire, the refrigeration cycle system comprises a water-cooling condenser, compressor and evaporimeter, water-cooled condenser includes the condenser delivery port, the condenser water inlet, first connector and second connector, the condenser delivery port loops through cooling tower and circulating water pump and is connected with the condenser water inlet, the compressor includes compressor gas vent and compressor return-air port, the compressor gas vent passes through exhaust duct and first connector connection, the second connector passes through the refrigeration pipeline and is connected with the evaporimeter, the evaporimeter passes through the return-air duct and is connected with the compressor return-air port. The scheme adopts a water cooling technology to replace a common air cooling technology.
Also for example, chinese patent publication No. CN111189245A entitled variable frequency constant temperature and humidity air conditioning device for granary discloses a variable frequency constant temperature and humidity air conditioning device for granary, which comprises a scroll compressor, and a fin condenser, a liquid storage tank, a drying filter, a liquid viewing mirror, a stop valve, a first electromagnetic valve, a thermostatic expansion valve, and an air processing mechanism, wherein the scroll compressor is connected in sequence through a first connecting pipe. This air conditioner is keeping grain microthermal simultaneously, still can adjust the humidity of air, plays constant temperature and humidity's effect to grain, and protection grain can not lose water, moreover to different in service behavior, still can select different constant temperature, constant humidity function.
However, the two solutions mentioned above have high manufacturing cost, difficult operation and maintenance, and high energy consumption during operation, and cannot be widely popularized and used in practical application of large-scale granaries due to the limitations of capital and operation and maintenance. The market needs an energy-saving air conditioner special for a granary.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an energy-saving air conditioner special for a granary.
In order to achieve the purpose, the invention adopts the following technical scheme:
an energy-saving air conditioner special for a granary comprises a shell, an air inlet and an air outlet which are arranged on the shell, a controller arranged in the shell, a condenser, an expansion valve, an evaporator and a compressor which are connected with the controller, wherein a refrigerant pipeline is sequentially connected with the compressor, the condenser, the expansion valve and the evaporator to form a loop,
a flow guide device capable of guiding the evaporator condensate water to a condensate water tank is arranged below the evaporator;
the refrigerant pipeline comprises a cooling coil arranged between the condenser and the expansion valve, and the cooling coil passes through the condensed water tank and is coiled in the condensed water tank.
The refrigerant is compressed by the compressor, and is changed from low-temperature low-pressure gas into high-temperature high-pressure gas, and the high-temperature high-pressure gas is connected with the condenser through the exhaust pipe, exchanges heat with outdoor air in the condenser, is cooled, and is changed into normal-temperature high-pressure liquid. In the technical scheme, the normal-temperature high-pressure liquid in the cooling coil exchanges heat with the low-temperature condensed water in the condensed water tank, the temperature is further reduced, and the supercooling degree is increased. The cooling energy required by the pretreated refrigerant liquid in the subsequent steps is reduced, extra energy supply is not needed in the whole process, the energy loss is reduced, and the energy-saving effect is achieved.
Preferably, the energy-saving air conditioner is an integrated machine arranged outdoors, the integrated machine comprises an indoor air circulation cavity and an outdoor air circulation cavity, air circulation is blocked between the indoor air circulation cavity and the outdoor air circulation cavity through a partition plate, the outdoor air circulation cavity is arranged on the lower portion of the shell, and the indoor air circulation cavity is arranged on the upper portion of the shell.
The indoor air circulation cavity and the outdoor air circulation cavity are separated, so that air mixing on two sides can be avoided, and the refrigeration effect is reduced. The separation of the two chambers also has the effect of saving energy. Most of household air conditioners are divided into an indoor unit and an outdoor unit, wherein a wall needs to be opened between the indoor unit and the outdoor unit, and a pipeline is arranged by penetrating through the wall. The hole is made in the wall body of the granary, so that on one hand, the warming and moisture insulation of the granary can be influenced, on the other hand, pests such as mice and the like can be left through the channel, the air conditioner is arranged into a hole which does not need to penetrate through the wall and can be prevented from penetrating through the wall, and the granary is more suitable for storage. In addition, the air conditioner is integrally arranged outdoors, so that the indoor space can be saved, and a larger space is reserved for grain storage. The indoor air circulation cavity is arranged on the upper portion, the outdoor air circulation cavity is arranged on the lower portion, so that the air inlet can be arranged as close as possible, on one hand, the refrigerating effect is enhanced, and on the other hand, the stacking height of grains can be guaranteed.
Preferably, an evaporator is arranged in the indoor air circulation cavity, a condensate water tank is arranged in the outdoor air circulation cavity, and the guide device can guide condensate water on the evaporator in the indoor air circulation cavity into the condensate water tank in the outdoor air circulation cavity.
The unit control system detects and calculates the indoor return air dew point temperature through an indoor return air temperature and humidity sensor, the unit controls the evaporation temperature of a refrigerant flow control evaporator entering the evaporator to be higher than the dew point temperature through the variable volume of a compressor and an electronic expansion valve, the amount of condensed water can be greatly reduced, and partial condensed water can be generated in the temperature and humidity adjusting process. Because the area of the granary is generally large, the amount of condensed water can be gathered to a certain extent. Set up the condensate water tank among this technical scheme and collect this part comdenstion water, avoided the comdenstion water to arrange into the granary in and cause the grain wet mould on the one hand, the condensate water temperature that on the other hand was collected is very low, need not to cool off through extra energy and just can carry out the secondary cooling to cooling coil, has improved energy efficiency.
Preferably, the evaporator is obliquely arranged in the indoor air circulation cavity, the bottom of the evaporator forms a certain angle with the partition plate, the flow guide device comprises a water guide pipe arranged on the partition plate, the water guide pipe is arranged above the condensed water tank, and the water guide pipe can guide condensed water into the condensed water tank.
The evaporator is obliquely arranged, so that condensed water can be guided better. The water guide pipe arranged on the partition board can communicate the indoor air circulation cavity and the outdoor air circulation cavity, so that condensed water can smoothly circulate between the indoor air circulation cavity and the outdoor air circulation cavity.
Preferably, a fan is further arranged in the indoor air circulation cavity, the fan is arranged on the upper portion of the evaporator, the lower portion of the fan is communicated with the air inlet, an air outlet on the upper portion of the fan is connected with the air outlet, and the air inlet and the air outlet are arranged on the same side of the shell. Indoor air at the air inlet flows in from the lower part, passes through the evaporator to be cooled, and is discharged into the granary through the air outlet at the upper part, so that the air in the granary is cooled. The vent is arranged at the upper part, so that the air outlet channel can be further arranged at a high position. Due to the sinking property of the cold air, the indoor cooling efficiency can be further improved.
Preferably, a filter screen is arranged at the air inlet. The filter screen of air inlet department can filter the air impurity such as cereal in the granary, plays the guard action to the pipeline of evaporimeter, avoids domestic air conditioner common corrosion problem in the granary uses.
Preferably, the outdoor air circulation cavity is provided with an axial flow fan, a refrigerant storage tank, a compressor, a refrigerant pipeline, a condenser, a condensate water tank and an expansion valve, the casing on one side of the outdoor air circulation cavity is provided with the axial flow fan, the condenser is arranged on the other side of the outdoor air circulation cavity, the axial flow fan provides negative pressure, outdoor air is sucked into the outdoor air circulation cavity through the condenser to cool the condenser, and hot air is discharged through an opening in the axial flow fan. The outdoor air circulation cavity is internally provided with a plurality of machines and pipelines, so that the heat production is high. By isolating this portion of the equipment from the upper indoor air circulation system, interference of heat production from the bottom to the refrigeration of the indoor air can be avoided. The heat dissipation of the partial area is mainly performed by outdoor air circulation constructed by an axial flow fan.
Preferably, the compressor is a digital scroll variable capacity compressor, and the expansion valve is an electronic expansion valve. Compared with the common compressor, the digital vortex variable-capacity compressor has the advantages that the capacity can be adjusted by 0-100 percent, and meanwhile, the dew point temperature of the air conditioning equipment can be adjusted by the combination of the digital vortex variable-capacity compressor and the electronic expansion valve.
Preferably, the energy-saving air conditioner special for the granary further comprises a sensor for detecting the temperature and the humidity of the air in the granary, the sensor is connected with the controller, and the controller can adjust the electronic expansion valve and the compressor based on signals of the sensor.
The sensor can transmit the indoor air temperature and humidity to the controller, and then the dew point temperature is adjusted through the electronic expansion valve and the digital vortex variable-capacity compressor, so that the indoor temperature and humidity are automatically controlled.
Preferably, the sensor comprises a temperature and humidity sensor arranged in the granary and a temperature and humidity sensor arranged at the air inlet and used for detecting the temperature of the indoor return air dry bulb and the humidity in the granary. The information recovery of the sensor can help calculate the dew point temperature.
As the supplement of the sensor for the air temperature and humidity in the granary, the sensor is also arranged at the air inlet, the temperature of the indoor air is further monitored, the regulation feedback is better formed, and a constant-temperature and constant-humidity environment is provided for the granary.
The invention has the beneficial effects that:
1. the invention realizes the secondary cooling of the cooling coil by utilizing the condensed water, thereby saving energy; the operation energy consumption is reduced by selecting the digital vortex variable-capacity compressor; through the reasonable layout of the air channel, the refrigeration effect is improved, and the refrigeration energy consumption is saved.
2. The invention senses the real-time temperature and relative humidity in the grain depot by the temperature and humidity sensor arranged in the grain depot, and the real-time temperature and relative humidity are analyzed and processed by the microcomputer controller in the control cabinet to calculate the dew point temperature in the depot and automatically control the compressor, the blower and the electronic expansion valve, thereby realizing the automatic regulation and control of the temperature and relative humidity of the grain depot; when the temperature of the grain depot is higher than a certain set value, the load of the compressor is adjusted according to the temperature; when the temperature of the storehouse is in the range of the set value, the load of the compressor is adjusted according to the relative humidity, unnecessary continuous work is avoided through intelligent control, and energy conservation is realized.
3. The equipment in the invention is simple and reasonable in side-by-side arrangement, the floor area of the rack is greatly reduced, and the equipment can be arranged on a storehouse panel.
Drawings
Fig. 1 is an exploded view of a structure of an energy-saving air conditioner dedicated to a granary according to an embodiment of the present invention;
fig. 2 is a structural diagram of components in an outdoor air circulation chamber of an energy-saving air conditioner dedicated for a granary in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 and 2, the embodiment relates to an energy-saving air conditioner special for a granary, the energy-saving air conditioner is an all-in-one machine arranged outdoors, the machine body comprises an indoor air circulation cavity and an outdoor air circulation cavity, air circulation is blocked between the indoor air circulation cavity and the outdoor air circulation cavity through a partition plate 14, the outdoor air circulation cavity is arranged on the lower portion of a shell 1, and the indoor air circulation cavity is arranged on the upper portion of the shell 1.
The energy-saving air conditioner for the grain bin comprises a shell 1, an air inlet 2 and an air outlet 3 which are arranged on the shell 1, a controller 4 arranged in the shell 1, a condenser 5, an expansion valve 6, an evaporator 7 and a compressor 8 which are connected with the controller 4, wherein a refrigerant pipeline 9 is sequentially connected with the compressor 8, the condenser 5, the expansion valve 6 and the evaporator 7 to form a loop. The shell is made of stainless steel.
An evaporator 7 is arranged in the indoor air circulation cavity, the evaporator is a microchannel all-aluminum flat tube evaporator for preventing hydrogen phosphide fumigation, and fins are arranged among tubes of the evaporator. The application of the micro-channel evaporator can further improve the refrigeration efficiency and save energy.
The indoor air circulation cavity is also internally provided with a fan 16 which adopts a high-air-volume and high-static-pressure centrifugal fan, the fan 16 is arranged at the upper part of the evaporator 7, the lower part of the fan 16 is communicated with the air inlet 2, an air outlet at the upper part of the fan 16 is connected with the air outlet 3, and the air inlet 2 and the air outlet 3 are arranged at the same side of the shell 1. And a filter screen is arranged at the air inlet 2.
As shown in fig. 2, the outdoor air circulation chamber is provided with an axial flow fan 17, a refrigerant storage tank, a compressor 8, a refrigerant pipe 9, a condenser 5, a condensate tank 10, an expansion valve 6, a dry filter, a gas-liquid separator, an axial flow fan, a condensate tank, and a control cabinet. The refrigerant pipeline 9 comprises an exhaust gas pipe, a high-pressure liquid pipe, a low-pressure gas pipe, a gas suction pipe and a cooling coil pipe; the compressor is connected with the condenser through an exhaust pipe; the condenser, the cooling coil, the drying filter and the electronic expansion valve are connected through a high-pressure liquid pipe; the expansion valve is connected with the microchannel evaporator through a low-pressure liquid pipe; the microchannel evaporator is connected with the gas-liquid separator through a low-pressure gas pipe; the gas-liquid separator is connected with the compressor through the air suction pipe. A cooling coil 11 provided between the condenser 5 and the expansion valve 6 passes through the condensed water tank 10 and is coiled in the condensed water tank 10.
An axial flow fan 17 is arranged on the casing on one side of the outdoor air circulation cavity, a condenser 5 is arranged on the other side of the outdoor air circulation cavity, the axial flow fan 17 provides negative pressure, outdoor air is sucked into the outdoor air circulation cavity through the condenser 5 to cool the condenser 5, and hot air is discharged through an opening in the position of the axial flow fan 17. The compressor 8 is a digital vortex variable-capacity compressor, and the expansion valve 6 is an electronic expansion valve.
The outdoor air circulation cavity is internally provided with a condensate water tank 10, the evaporator 7 is obliquely arranged in the indoor air circulation cavity, the bottom of the evaporator is at a certain angle with the partition plate 14, the flow guide device comprises a water guide pipe 15 arranged on the partition plate 14, the water guide pipe 15 is arranged above the condensate water tank 10, and the water guide pipe 15 can guide condensate water into the condensate water tank 10.
The special energy-saving air conditioner for the granary further comprises a sensor for detecting the temperature and the humidity of air in the granary, the sensor is connected with the controller 4, and the controller 4 can adjust the electronic expansion valve 6 and the compressor 8 based on signals of the sensor.
The sensor includes the temperature and humidity sensor who sets up in the granary and set up in air intake 2 department and be used for detecting indoor return air dry bulb temperature, reach the temperature and humidity sensor of interior humidity of storehouse.
The working process of the embodiment is as follows:
the refrigerant circulating process:
the refrigerant is compressed by a compressor, low-temperature low-pressure gas is changed into high-temperature high-pressure gas, the high-temperature high-pressure gas is connected with a condenser through an exhaust pipe, and exchanges heat with outdoor air in the condenser to be cooled, so that the high-temperature high-pressure gas is changed into normal-temperature high-pressure liquid; the normal-temperature high-pressure liquid exchanges heat with low-temperature condensate water in a condensate water tank in the cooling coil, the temperature is further reduced, and the supercooling degree is increased; the normal-temperature high-pressure liquid enters the electronic expansion valve through the high-pressure liquid pipe for throttling, so that the normal-temperature high-pressure liquid is a low-temperature low-pressure gas-liquid two-phase substance; finally, low-temperature and low-pressure gas-liquid two-phase refrigerant enters the microchannel evaporator through the low-pressure liquid pipe and is evaporated in the microchannel evaporator, the refrigerant needs to absorb heat when being evaporated, so that indoor air is cooled, and low-temperature air is conveyed into the air supply pipe through the air feeder and enters the grain depot, so that the whole depot is cooled; the refrigerant after heat exchange of the microchannel evaporator is evaporated into low-temperature and low-pressure gas, and the low-temperature and low-pressure gas returns to the compressor through the low-pressure gas pipe, the gas-liquid separator and the gas suction pipe and circulates in sequence.
The cooling process of the storehouse: when the temperature and humidity sensor arranged in the grain depot warehouse detects that the temperature is higher than the upper temperature limit, the unit enters cooling control. At the moment, the temperature sensor transmits a signal to a microcomputer controller of the control cabinet for analysis and processing, the time proportion of power-on/power-off of the compressor capacity adjusting electromagnetic valve is controlled, and the capacity of the compressor is adjusted in an electrodeless mode; when the temperature of the storehouse is higher, the closing time proportion of the capacity regulating electromagnetic valve is larger, the load of the compressor is larger, the refrigerating capacity is larger, and the temperature of the storehouse is reduced faster; when the temperature of the storehouse is closer to the upper limit of the temperature, the smaller the closing time proportion of the capacity regulating electromagnetic valve is, the smaller the load of the compressor is, the smaller the refrigerating capacity is, and the slower the temperature of the storehouse is reduced; thus, the warehouse temperature is stabilized at a certain value by controlling the time ratio of the power-on/power-off of the capacity regulating electromagnetic valve of the compressor.
The storehouse moisturizing process:
when a temperature and humidity sensor arranged in a grain depot warehouse detects that the temperature is lower than the upper temperature limit and is higher than a set value, the unit enters moisture preservation control. In the refrigeration process, the temperature on the surface of the evaporator is possibly lower than the dew point temperature of indoor air, so that water vapor in the air meets the cold surface and condenses into water drops, the water drops are attached to the surface of the fin and are discharged into the water receiving disc, and finally the water drops are discharged into the condensate tank through the water pipe to exchange heat with the cooling coil inside, so that the temperature of a refrigerant is reduced, the supercooling degree is increased, and the refrigeration effect is improved. The humidity sensor transmits a signal to a microcomputer controller of the control cabinet for analysis and processing, controls the power-on/power-off time proportion of the compressor capacity regulating electromagnetic valve, and regulates the capacity of the compressor in an electrodeless manner, so that the humidity of the storehouse is quickly stabilized to a set value; when the humidity of the storehouse is higher, the closing time proportion of the capacity regulating electromagnetic valve is larger, the load of the compressor is larger, the temperature of the tube wall of the evaporator is lower, the dehumidification quantity is larger, and the humidity of the storehouse is reduced more quickly; when the humidity of the storehouse is closer to a set value, the closing time proportion of the capacity regulating electromagnetic valve is smaller, the load of the compressor is smaller, the temperature of the tube wall of the evaporator is higher, the dehumidification amount is smaller, the humidity of the storehouse is reduced more slowly, and when the load of the compressor is reduced to a certain degree, the temperature of the tube wall of the evaporator is higher than the dew point temperature of air, so that no condensed water is separated out; therefore, the humidity of the storehouse is stabilized at a certain value by controlling the time ratio of the power-on/power-off of the capacity regulating electromagnetic valve of the compressor. Therefore, by reducing the capacity of the compressor, moisture in the air is not separated out or is separated out less, loss of grain moisture is reduced, grain weight is guaranteed, and loss of grain storage enterprises is reduced.
The beneficial effect of this embodiment does:
1. in the embodiment, the condensed water is utilized, so that the secondary cooling of the cooling coil is realized, and the energy is saved; the operation energy consumption is reduced by selecting the digital vortex variable-capacity compressor; by reasonably arranging the air channels, the refrigeration effect is improved, and the refrigeration energy consumption is saved; through the selection of the fumigation-proof microchannel evaporator, the refrigeration efficiency is further improved, and the energy is saved.
2. In the embodiment, real-time temperature and relative humidity in the grain depot are sensed by a temperature and humidity sensor arranged in the grain depot, analyzed and processed by a microcomputer controller in a control cabinet, and a compressor, an air feeder and an electronic expansion valve are automatically controlled, so that the automatic regulation and control of the temperature and the relative humidity of the grain depot are realized; when the temperature of the grain depot is higher than a certain set value, the load of the compressor is adjusted according to the temperature; when the temperature of the storehouse is in the range of the set value, the load of the compressor is adjusted according to the relative humidity, unnecessary continuous work is avoided through intelligent control, and energy conservation is realized.
3. The casing adopts the stainless steel casing of anticorrosive in this embodiment to filter screen through the air intake and the chooseing for use of the full aluminium material of evaporimeter, perishable problem when having avoided domestic air conditioner to use in the granary is applicable to the granary refrigeration more.
4. The equipment in this embodiment is simple and reasonable to arrange side by side, very big reduction the area of frame, the mountable is easily promoted on the storehouse panel.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. The utility model provides a special energy-conserving air conditioner of granary, includes casing (1), air intake (2) and air outlet (3) of setting on casing (1), and controller (4) of setting in casing (1), and condenser (5) that link to each other with controller (4), expansion valve (6), evaporimeter (7), compressor (8), refrigerant pipeline (9) connect gradually compressor (8), condenser (5), expansion valve (6), evaporimeter (7), form return circuit, its characterized in that:
a flow guide device capable of guiding the condensed water of the evaporator (7) to the condensed water tank (10) is arranged below the evaporator (7);
the refrigerant pipeline (9) comprises a cooling coil (11) arranged between the condenser (5) and the expansion valve (6), and the cooling coil (11) passes through the condensed water tank (10) and is coiled in the condensed water tank (10).
2. The special energy-saving air conditioner for the granary according to claim 1, wherein: the energy-saving air conditioner is an all-in-one machine arranged outdoors, the all-in-one machine comprises an indoor air circulation cavity and an outdoor air circulation cavity, air circulation is blocked between the indoor air circulation cavity and the outdoor air circulation cavity through a partition plate (14), the outdoor air circulation cavity is arranged on the lower portion of the shell (1), and the indoor air circulation cavity is arranged on the upper portion of the shell (1).
3. The special energy-saving air conditioner for the granary according to claim 2, wherein: the indoor air circulation cavity is internally provided with an evaporator (7), the outdoor air circulation cavity is internally provided with a condensate water tank (10), and the flow guide device can guide condensate water on the evaporator (7) in the indoor air circulation cavity into the condensate water tank (10) in the outdoor air circulation cavity.
4. The special energy-saving air conditioner for the granary according to claim 3, wherein: evaporimeter (7) slope sets up in indoor air circulation intracavity, the bottom with baffle (14) become certain angle, the guiding device is including setting up aqueduct (15) on baffle (14), aqueduct (15) set up in condensate tank (10) top, aqueduct (15) can be with in the leading-in condensate tank (10) of comdenstion water.
5. The special energy-saving air conditioner for the granary according to claim 4, wherein: still be provided with fan (16) in the indoor air circulation intracavity, fan (16) set up on evaporimeter (7) upper portion, fan (16) lower part and air intake (2) intercommunication, the gas vent on fan (16) upper portion links to each other with air outlet (3), air intake (2) with air outlet (3) set up in same one side of casing (1).
6. The special energy-saving air conditioner for the granary according to claim 5, wherein: and a filter screen is arranged at the air inlet (2).
7. The special energy-saving air conditioner for the granary according to claim 2, wherein: the outdoor air circulation cavity is provided with an axial flow fan (17), a refrigerant liquid storage tank, a compressor (8), a refrigerant pipeline (9), a condenser (5), a condensate water tank (10) and an expansion valve (6), the axial flow fan (17) is arranged on the casing on one side of the outdoor air circulation cavity, the condenser (5) is arranged on the other side of the outdoor air circulation cavity, the axial flow fan (17) provides negative pressure, outdoor air is sucked into the outdoor air circulation cavity through the condenser (5) to cool the condenser (5), and hot air is discharged through an opening at the position of the axial flow fan (17).
8. The special energy-saving air conditioner for the granary according to claim 1, wherein: the compressor (8) is a digital vortex variable-capacity compressor (8), and the expansion valve (6) is an electronic expansion valve (6).
9. The special energy-saving air conditioner for the granary according to claim 8, wherein: the special energy-saving air conditioner for the granary further comprises a sensor for detecting the temperature and the humidity of air in the granary, the sensor is connected with the controller (4), and the controller (4) can adjust the electronic expansion valve (6) and the compressor (8) based on signals of the sensor.
10. The special energy-saving air conditioner for the granary according to claim 9, wherein: the sensor comprises a temperature and humidity sensor arranged in the granary and a temperature and humidity sensor arranged at the air inlet (2) and used for detecting the temperature of the indoor return air dry bulb and the humidity in the granary.
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| CN112616456B (en) | 2023-04-11 |
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