CN115462281B - Cold air system, method for controlling cold air and application - Google Patents
Cold air system, method for controlling cold air and application Download PDFInfo
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- CN115462281B CN115462281B CN202211161576.7A CN202211161576A CN115462281B CN 115462281 B CN115462281 B CN 115462281B CN 202211161576 A CN202211161576 A CN 202211161576A CN 115462281 B CN115462281 B CN 115462281B
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- 238000000034 method Methods 0.000 title claims description 12
- 238000001704 evaporation Methods 0.000 claims abstract description 32
- 230000008020 evaporation Effects 0.000 claims abstract description 32
- 241000233866 Fungi Species 0.000 claims description 48
- 238000010438 heat treatment Methods 0.000 claims description 23
- 230000007246 mechanism Effects 0.000 claims description 20
- 230000001580 bacterial effect Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 238000004378 air conditioning Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000012258 culturing Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- 240000007440 Agaricus campestris Species 0.000 description 1
- 235000004570 Agaricus campestris Nutrition 0.000 description 1
- 244000045069 Agrocybe aegerita Species 0.000 description 1
- 235000008121 Agrocybe aegerita Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 240000000599 Lentinula edodes Species 0.000 description 1
- 235000001715 Lentinula edodes Nutrition 0.000 description 1
- 241000392443 Pleurotus citrinopileatus Species 0.000 description 1
- 244000158441 Pleurotus sajor caju Species 0.000 description 1
- 235000004116 Pleurotus sajor caju Nutrition 0.000 description 1
- 240000006794 Volvariella volvacea Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G18/00—Cultivation of mushrooms
- A01G18/60—Cultivation rooms; Equipment therefor
- A01G18/69—Arrangements for managing the environment, e.g. sprinklers
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mycology (AREA)
- Environmental Sciences (AREA)
- Central Air Conditioning (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The application relates to the technical field of air conditioning, and discloses a cold air system which comprises cold air equipment, wherein the cold air equipment comprises a shell, an evaporator and a fan. The evaporator and the fan are both arranged in the shell; the evaporator comprises a plurality of evaporation sheets which are arranged at intervals and are arranged on the inner section of the shell; the fan is configured to draw gas into the housing and to send the gas out of the housing through the plurality of evaporation sheets. Compared with a single evaporator with equal total thickness after the evaporation sheets are added, the evaporator forms a buffer space between the evaporation sheets, has smaller resistance to air flow, effectively reduces the energy consumption of a fan under the condition of equal air output, and simultaneously has longer air flow passing path, better air cooling stroke and higher refrigerating efficiency due to the establishment of the buffer space.
Description
Technical Field
The application relates to the technical field of air conditioning, in particular to a cold air system, and a method and application for controlling cold air.
Background
Fungus bag (fungus stick) culture is a common method for modern edible fungus culture. The fungus bag is made by inoculating strain into bagged culture medium (such as cotton seed hull), culturing in greenhouse or fungus house (room for cultivating edible fungus), and culturing under temperature control. When producing edible fungi, specific temperature and humidity and moisture in the fungus bag are required to be kept so as to grow excellent edible fungi.
Edible fungi can be divided into two categories according to the relationship between the differentiation of fruiting bodies (primordia appear at the beginning) and the temperature:
1. the highest temperature can not be higher than 24deg.C, and the optimum temperature should be lower than 20deg.C, such as Lentinus Edodes, agrocybe aegerita, agaricus campestris, and Pleurotus Citrinopileatus Sing.
2. The highest temperature can exceed 30deg.C, and the optimum temperature should be higher than 24deg.C, such as straw mushroom, pleurotus sajor-caju, and abalone mushroom.
For different strains, different temperature and humidity environments need to be controlled, for example, the proper temperature and humidity are controlled by refrigerating and humidifying a fungus room. In the existing refrigerating machine used for refrigerating the fungus houses, the centrifugal machine for extracting cold air and sending the cold air into the room has large power consumption and low refrigerating efficiency.
Disclosure of Invention
In order to solve the problems of high power consumption and low refrigerating efficiency of a centrifugal machine for air extraction in the process of extracting cold air and sending the cold air into a room of the existing refrigerator, the application provides a cold air system, and a method and application for controlling cold air.
In a first aspect, the present application provides a cold air system, and adopts the following technical scheme:
a cold air system comprises a cold air device, wherein the cold air device comprises a shell, an evaporator and a fan. The evaporator and the fan are both arranged in the shell; the evaporator comprises a plurality of evaporation sheets which are arranged at intervals and are arranged on the inner section of the shell; the fan is configured to draw gas into the housing and to send the gas out of the housing through the plurality of evaporation sheets.
By adopting the technical scheme: compared with a single evaporator with equal total thickness after the evaporation sheets are added, the evaporator forms a buffer space among the evaporation sheets, and experiments prove that the resistance to air flow is smaller, the energy consumption of a fan is effectively reduced under the condition of equal air output, meanwhile, the buffer space is built, so that the air flow passing path is longer, the air cooling stroke is increased, the refrigerating effect is better, and the refrigerating efficiency is improved.
Preferably, all evaporation sheets of the evaporator are arranged in parallel, and the distance between two adjacent evaporation sheets is 5-20cm.
By adopting the technical scheme: experiments show that the buffer distance is moderate, the resistance of the evaporator to air flow is small, and the refrigerating effect is good.
Preferably, the shell is provided with two fresh air inlets, two return air inlets and an air supply outlet; the cold air device comprises a controller and two evaporators. The controller is arranged to control the opening and closing of the two fresh air inlets and the opening and closing of the two return air inlets. One of the air inlets and one of the air returns are both open to one of the evaporators, and the other air inlet and the other air return are both open to the other evaporator. The fan is configured to suck air into the two fresh air inlets and/or the two return air inlets through the suction effect, pass through the two evaporators, and then pass through the fan to be conveyed to the air supply outlet.
By adopting the technical scheme: the two fresh air ports and the two air return ports are arranged on the shell, compared with single-port air inlet, the single-port air inlet and the single-port air inlet speed are reduced under the same air inlet quantity, the resistance of the evaporator to air flow is correspondingly reduced, and the energy consumption of the fan is reduced. The controller is used for controlling the opening and closing of the two fresh air inlets and the two return air inlets, and the air in different areas can be selectively sucked by combining the pipelines, so that the functions of the cold air system are enriched. The corresponding arrangement of the two air inlets, the two air returns, the two evaporators and the fan disperses wind power, keeps higher total air quantity, can design the cold air equipment more symmetrically and compactly, can effectively reduce the volume of the cold air equipment and reduce the occupation of the cold air equipment to space.
Preferably, the two evaporators are arranged at two sides of the fan, and the fan extends out of the two enlarged bellmouths to surround the air outlet ends of the two evaporators; the fan also extends out of an air outlet pipeline to be communicated with the air supply outlet.
By adopting the technical scheme: the horn mouth is designed to exhaust air, so that the air suction force is improved, in particular, the suction force of the fan to the edge of the air outlet end is improved, and the air outlet quantity is improved.
Preferably, the cold air system further comprises a plurality of air return pipes and a plurality of air supply pipes. Each return air inlet is communicated with one to a plurality of return air pipes; a plurality of return air holes which are uniformly distributed are formed in each return air pipe; the air supply port is outwardly branched into a plurality of air supply pipes; a plurality of uniformly distributed air supply holes are formed in each air supply pipe; the two fresh air ports are communicated with the atmosphere.
By adopting the technical scheme: cold air sent out by the plurality of air supply pipes flows back through the plurality of air return pipes, so that the cold air is uniformly distributed; the plurality of uniformly distributed air supply holes are formed in each air supply pipe, and the plurality of uniformly distributed air return holes are formed in the air return pipes, so that the uniformity of cold air distribution is further improved; the two fresh air ports are communicated with the atmosphere, so that fresh air can be sucked in when needed to meet the use requirement.
Preferably, the cold air system further comprises a heating mechanism for heating the sucked air; the heating mechanism is arranged in the shell, is adjacent to the air inlet end of the evaporator and is arranged at intervals with the air inlet end of the evaporator.
By adopting the technical scheme: the heating mechanism can heat the introduced gas, the temperature difference between the heated gas and the evaporator is increased, so that water vapor in the introduced gas is easier to condense into water, the humidity of the introduced gas is reduced, and the icing degree of the introduced gas at the air outlet end of the evaporator is reduced.
Preferably, at least a part of the heating mechanism is arranged at the periphery of the air inlet end of the evaporator.
By adopting the technical scheme: because the wind speed at the periphery is smaller, the periphery of the air outlet end of the evaporator is easier to freeze, and the heating mechanism is arranged at the periphery of the air inlet end, so that the air flow humidity at the periphery is reduced, and the icing phenomenon at the periphery of the air outlet end of the evaporator can be relieved in a targeted manner. The heating mechanism is distributed at a plurality of points at the periphery.
Preferably, the heating mechanism comprises a plurality of electric heaters which are uniformly distributed on the whole air inlet end face of the evaporator.
By adopting the technical scheme: the air flow sucked into the cold air system mainly flows towards the direction attracted by the fan, but the air flow is convected in all directions, so that the plurality of electric heaters are uniformly distributed on the whole air inlet end face of the evaporator, the air flow can be uniformly heated, the temperature difference between the air flow and the evaporator after being heated wholly becomes large, water vapor in the air flow is easy to condense into water, and the icing phenomenon of the evaporator is remarkably reduced.
In a second aspect, the application further provides a method for controlling cold air, and the following technical scheme is adopted.
A method for controlling cold air, using the cold air system to control cold air delivery, the method comprising:
the controller controls the two fresh air inlets to be in a closed state and the two return air inlets to be in an open state; the fan sucks gas through the two return air inlets, the sucked gas passes through the two evaporators again, then enters the fan, and the fan discharges the gas to the air supply inlet;
the controller controls the two fresh air inlets to be in an open state and the two return air inlets to be in a closed state; the fan sucks gas through the two fresh air openings, the sucked gas passes through the two evaporators again, then the sucked gas enters the fan, and the air is discharged to the air supply opening by the fan.
By adopting the technical scheme: the fresh air port and the return air port can be freely switched to enter air so as to introduce air in different environments and meet different scene requirements. For example, the return air inlet is communicated with the indoor space, the fresh air inlet is communicated with the outdoor space, the air flowing back to the cold air equipment from the return air inlet is indoor air, and after the air returns for a long time, the air is not fresh enough and fresh air needs to be supplemented, so that the fresh air inlet can be switched to introduce the fresh air; if the fresh air is introduced for a long time, energy consumption is increased due to the fact that the temperature of the fresh air and the indoor air generally have a large temperature difference, and therefore the cold air is regulated and controlled in a mode of switching the fresh air inlet and the return air inlet.
In a third aspect, the present application further provides an application of the cold air system, and the following technical scheme is adopted.
An application of the cold air system, wherein the cold air system is applied to cold air control of a fungus room, and comprises the following steps: the cold air equipment is arranged outside the fungus room; the plurality of air supply pipes are arranged at the inner top of the fungus room; the plurality of return air pipes are arranged at the inner bottom of the fungus room.
By adopting the technical scheme: the cold air with the outflow density larger than that of indoor air in a plurality of air supply holes of a plurality of air supply pipes at the top is settled and dispersed to all directions under the action of gravity, and the indoor air is extracted through a plurality of air return pipes, so that the cold air is uniformly dispersed on all spaces of a fungus room, and the effects of uniform cooling and ventilation of the air in the fungus room are achieved.
In summary, the application has the following beneficial effects:
the evaporator is divided into a plurality of evaporation sheets which are arranged at intervals, a buffer space is formed between the evaporation sheets, and compared with a single evaporator with equal total thickness, the resistance of airflow passing through the evaporator is equal to that of the single evaporator, and the design of the evaporator effectively reduces the energy consumption of a fan and improves the refrigeration efficiency at the same time under the same air output;
the horn mouth is designed to exhaust air, so that the air suction force is improved, in particular, the suction force of the fan to the edge of the air outlet end is improved, and the air outlet quantity is improved;
the heating mechanism is arranged at the air inlet end of the evaporator, the heating mechanism can heat the introduced gas, and the temperature difference between the heated gas and the evaporator is increased, so that water vapor in the introduced gas is easier to condense into water, the humidity of the introduced gas is reduced, and the icing degree of the introduced gas at the air outlet end of the evaporator is reduced;
the cold air system is arranged on the fungus room, cold air with the density larger than that of indoor air flows out of a plurality of air supply holes of a plurality of air supply pipes at the top, and is settled and dispersed to all directions under the action of gravity, and the indoor air is extracted through a plurality of air return pipes, so that the cold air is uniformly dispersed on all spaces of the fungus room, and the effect of uniform cooling and ventilation of the air in the fungus room is achieved.
Drawings
FIG. 1 is a schematic view of the main view internal structure of a cool air system;
FIG. 2 includes a left view external structural schematic diagram of the cool air system of FIG. 1, and a structural schematic diagram of the cool air system installed inside and outside the fungus house;
fig. 3 is a schematic top view external structure of the cool air system of fig. 1.
Reference numerals: 1. a cold air device; 11. a housing; 12. an evaporator; 13. a blower; 2. an air return pipe; 3. an air supply pipe; 121. an evaporation sheet; 131. a horn mouth; 111. an air supply port; 112. an air return port; 113. a new wind gap; 201. a return air hole; 301. a wind supply hole; 14. a heating mechanism; 141. an electric heater; 4. an atomizer; 5. an atomizing tube; 501. and a fog outlet.
Detailed Description
The present application will be described in further detail with reference to examples.
Referring to fig. 1, a schematic view of a main view internal structure of a cold air system is shown, the cold air system includes a cold air apparatus 1, the cold air apparatus 1 includes a housing 11, an evaporator 12, and a fan 13. The evaporator 12 and the blower 13 are both installed in the housing 11. The housing 11 may be made of stainless steel material.
The evaporator 12 is a refrigeration device whose refrigeration principle is: the low-temperature condensed liquid passes through the evaporator 12 to exchange heat with the outside air, and the condensed liquid is gasified and absorbs heat, so that the air refrigeration effect is achieved. The evaporator 12 is generally of an integral design and has a relatively large thickness, and in the embodiment of the present application, the evaporator 12 is configured to include a plurality of evaporation sheets 121 disposed at intervals, all disposed on an inner section of the housing 11. The thickness of the evaporation sheet 121 can be made relatively thin, and the thickness of the addition of the plurality of evaporation sheets 121 corresponds to the thickness of the present integral evaporator 12.
The blower 13 may be a centrifugal blower 13, which generates suction by centrifugation to suck the gas into the housing 11 and send the gas out of the housing 11 through the plurality of evaporation sheets 121. There are several alternatives to the mounting location of the fan 13, for example: the fan 13 is arranged behind the evaporator 12, external air is sucked into the shell 11 in a suction mode, firstly passes through the evaporator 12 and then is sucked into the fan 13, and finally the air is sent out of the shell 11 through the fan 13; the blower 13 may also beBefore the evaporator 12, air is sucked in, pushed into the evaporator 12, passed through the evaporator 12, and finally discharged out of the housing 11. In a preferred embodiment, after the blower 13 is disposed in the evaporator 12, negative pressure is generated by suction to make the external air pass through the evaporator 12 first, and under the same power of the blower 13, compared with the mode that the blower 13 sucks air and pushes the air through the evaporator 12, the initial air speed of the former air passing through the evaporator 12 is smaller than the initial air speed of the latter air passing through the evaporator 12, so that the air resistance of the former air is smaller, the air speed of the cold air passing through the evaporator 12 is larger than the air speed of the latter air passing through the evaporator 12, the cold air flow is output in a mode of the former air flowing more, and the air output in a mode of the former air flowing is average 6032CMH (CMH can also be written as m) under the same experimental condition that the power of the blower 13 is 1.5kW 3 And/h), the average air output of the latter is 5156CMH.
In order to compare with the existing single evaporator 12, the inventor performs a refrigeration experiment by closely stacking the plurality of evaporation sheets 121 into a substitute for the single evaporator 12, and also adopts the mode that the fan 13 is arranged behind the evaporator 12, negative pressure is generated through suction, external air passes through the evaporator 12 and then enters the fan 13 to be sent out of the shell 11, and the experiment shows that when the power of the fan 13 is 1.5kW, the average air output is 4480CMH, which is 35% smaller than 6032CMH of the previous embodiment. The buffer space is formed among the plurality of evaporation sheets 121, so that the influence of the tight overlapping of the plurality of evaporation sheets 121 to block the ventilation gap is reduced, the wind resistance is effectively reduced, the energy consumption of the fan 13 is reduced, the travel of cooling air is increased, and the refrigerating effect is better.
In a preferred embodiment, all the evaporation sheets 121 of the evaporator 12 are arranged in parallel, and the distance between two adjacent evaporation sheets 121 is 5 cm to 20cm. It is further preferable that all the evaporation sheets 121 are disposed equidistantly, and the distance between two adjacent evaporation sheets 121 is 10cm. In one test example, three parallel evaporation sheets 121 were provided, the distance between two adjacent evaporation sheets 121 was 10cm, the power of the blower 13 was 1.5kW, and the average air output was 6032CMH. In another test example, the three evaporation sheets 121 were closely stacked, and other test conditions were the same as those in the previous test example, including setting the power of the blower 13 to be 1.5kW, and measuring the average air volume to be 4480CMH.
Referring to fig. 2, the cold air system can be used for temperature regulation of an edible fungi culture room, and fig. 2 is a schematic diagram of a connection structure of the cold air system installed inside and outside the fungi culture room. To this end, a case 11 is provided with an air supply port 111 for supplying cool air, an air return port 112 for returning indoor air, and a fresh air port 113 for sucking outdoor fresh air, and is provided with an air supply duct 3 for supplying cool air, and an air return duct 2 for returning indoor air, the air supply duct 3 being connected to the air supply port 111, the air return duct 2 being connected to the air return port 112, and the air supply, cooling, and ventilation being controlled by the cool air device 1.
As shown in fig. 1, in order to make the temperature and oxygen content of the bacterial room uniform, two fresh air inlets 113, two return air inlets 112 and an air supply outlet 111 are preferably provided on the housing 11. A PLC controller and two evaporators 12 are provided in the cool air apparatus 1. Aluminum alloy doors are arranged on the fresh air inlet 113 and the return air inlet 112. The PLC is configured to control the opening and closing of four aluminum alloy doors to control the opening and closing of two fresh air inlets 113 and the opening and closing of two return air inlets 112. The fresh air port 113 and the return air port 112 may be opened simultaneously, or only the fresh air port 113 or only the return air port 112 may be opened at the same time. A rain-proof shutter can be arranged outside the aluminum alloy door at the air inlet 113.
Inside the housing 11, one of the fresh air inlet 113 and one of the return air inlet 112 each open into one of the evaporators 12, and likewise, the other of the fresh air inlet 113 and the other of the return air inlet 112 each open into the other of the evaporators 12. The fan 13 can generate suction force through centrifugation, and suck air into the two fresh air inlets 113 and/or the two return air inlets 112, and the air passes through the two evaporators 12, is sucked into the fan 13 and is then output to the air supply outlet 111.
In the above embodiment, the two fresh air inlets 113 and the two air return inlets 112 are arranged on the casing 11, and the two fresh air inlets 113 can be symmetrically arranged on two sides of the casing 11 so as to fully suck outdoor fresh air, and the two air return inlets 112 can be symmetrically arranged on the same side of the casing 11 and face towards the fungus room so as to be connected with the air return pipe 2. Compared with a single fresh air inlet 113 and a single return air inlet 112, the arrangement of the two fresh air inlets 113 and the two return air inlets 112 reduces the air inlet quantity and the air inlet speed of the single inlet, the lower air speed reduces the resistance of the evaporator 12 to the air flow, and reduces the energy consumption of the fan 13. Under the requirement of maintaining a certain air flow, the symmetrical arrangement can enable the structure of the cold air equipment 1 to be more compact, and can effectively reduce the volume of the cold air equipment 1 and reduce the occupation of the cold air equipment to the space.
In the housing 11, two evaporators 12 may be symmetrically disposed at both sides of the blower 13. In some preferred embodiments, the fan 13 extends out of two enlarged bellmouth 131 to surround the air outlet ends of the two evaporators 12, so as to generate a larger suction force on the air flow around the air outlet ends of the evaporators 12, thereby increasing the air volume and reducing the peripheral icing phenomenon. The fan 13 further extends out of an air outlet pipeline to be communicated with the air supply port 111. The periphery of the air outlet end of the evaporator 12 can be circular, square, or other regular or irregular shape.
Referring to fig. 3, in order to improve the uniformity of air supply, the number of the air return pipes 2 and the number of the air supply pipes 3 may be plural, and the plural air return pipes 2 and the plural air supply pipes 3 may be uniformly installed in the edible fungi culture room for controlling the cold air flow. In order to further improve the uniformity of the cold air flow in the fungus room, the plurality of air supply pipes 3 can be uniformly paved at the top of the fungus room, the plurality of air return pipes 2 are arranged at the bottom of the fungus room for air return, and the cold air can fully flow to most of the space of the fungus room under the influence of gravity. In the cold air system, each of the air return openings 112 is connected to one or more air return pipes 2, for example, for two air return openings 112, each of the air return openings 112 is connected to one of the air return pipes 2. In order to further enhance the flow uniformity of the cold air flow in the fungus room, a plurality of air return holes 201 are formed in each air return pipe 2, and the air return holes 201 are preferably arranged upwards to guide the air flow, so that the indoor air flow is more uniformly mixed. Wherein, one air supply port 111 is outwardly branched to connect a plurality of air supply pipes 3, for example, two air supply pipes 3 are branched to connect, and two air supply pipes 3 may be arranged in parallel and at intervals in the fungus room. A plurality of uniformly distributed air supply holes 301 are formed in each air supply pipe 3 to improve the uniformity of air outlet, and the air supply holes 301 can be arranged upwards to enable the cool air to flow to two sides more uniformly and evenly. Two of the fresh air ports 113 are directly open to the outdoor atmosphere. The PLC controller arranged in the cold air device 1 can control the two fresh air inlets 113 to be opened simultaneously, and simultaneously control the two return air inlets 112 to be closed, or control the fresh air inlets 113 to be closed when the return air inlets 112 are opened, and can alternately open and close for a plurality of times. As an alternative, the return air inlet 112 is opened for a longer period of time, and since the temperature and humidity of the return air are more in accordance with the cultivation requirement of the fungus in general, the cooling electric energy can be saved, and the fresh air inlet 113 is opened for a shorter period of time, so that fresh air can be timely supplemented when the return air deviates from the cultivation requirement of the fungus.
Referring to fig. 2, further, the cold air system may further include an atomizer 4 and an atomizing tube 5 installed in the fungus room, the atomizer 4 is connected with two atomizing tubes, the atomizing tubes may be installed at the top of the fungus room and located below the air supply tube 3, each atomizing tube is uniformly provided with a plurality of mist outlet holes 501, the mist outlet holes may be formed on the side edges, the lower edges and the like of the atomizing tube, and spray water mist to humidify the fungus room, so that the internal environment of the fungus room is more suitable for cultivating fungus bags.
Furthermore, the cold air system can also comprise a fungus house, and the fungus house is provided with a self-hanging shutter to perform natural ventilation. The self-hanging shutter naturally sags by the dead weight of the shutter at the air port under the normal condition, so that the air exchange between the indoor and the outdoor is isolated, when the indoor air pressure is greater than the outdoor air pressure, the shutter is blown open by the air flow to exhaust outwards, otherwise, when the indoor air pressure is less than the outdoor air pressure, the air flow cannot reversely flow into the room, and the air port has a one-way non-return function.
Referring to fig. 1, during the use of the cooling air system, icing is likely to occur at the periphery of the air outlet end of the evaporator 12. Since the surface temperature of the evaporation sheet 121 is generally lower than 0 deg.c and the wind speed at the periphery of the evaporator 12 is small, water vapor is easily condensed at the periphery. When the ice reaches a certain thickness, the air flow is reduced, the heat exchange effect is poor, and deicing is needed. In this regard, the cooling air system is further provided with a heating mechanism 14 for heating the air, and the heating mechanism 14 may be uniformly disposed at the periphery of the air inlet end side of the evaporator 12, and on this basis, may be disposed at other positions of the air inlet end side, and may be entirely spaced apart from the air inlet end of the evaporator 12 by a distance of about 10-30cm so as not to damage the evaporator 12. Because the heating mechanism 14 can heat the sucked gas, the temperature difference between the heated gas and the evaporator 12 becomes large, so that water vapor in the introduced gas is easier to condense into water, the humidity of the introduced gas is reduced, and the gas is not easy to freeze at the periphery when passing through the air outlet end of the evaporator 12. The heating mechanism 14 can be started at proper time or can be opened normally, and after the heating mechanism is started, the icing phenomenon can be obviously improved.
In order to further improve the effect of icing around the periphery of the evaporator 12, in one embodiment, the heating mechanism 14 includes a plurality of electric heaters 141, which are uniformly arranged outside the whole air inlet end face of the evaporator 12, the temperature difference between the air flow and the evaporator 12 becomes large after the air flow is heated as a whole, and the water vapor in the air flow is easy to condense into water after being cooled, so that the icing phenomenon at the tail end of the evaporator 12 is remarkably reduced.
The cold air system of the embodiment is applied to temperature regulation of a fungus room, the cold air equipment 1 can be installed outside the fungus room, the air supply pipe 3 is installed at the inner top of the fungus room, and the return air pipe 2 is installed at the inner bottom of the fungus room. The temperature regulation and control are carried out by selecting the following operation modes:
the PLC controls the two fresh air inlets 113 to be in a closed state, and the two return air inlets 112 to be in an open state; the fan 13 sucks gas through the two return air inlets 112, the sucked gas passes through the two evaporators 12 again, then enters the fan 13, the fan 13 discharges the gas to the air supply inlet 111, and the gas output by the air supply inlet 111 is conveyed through the air supply pipe 3;
the PLC controls the two fresh air inlets 113 to be in an open state, and the two return air inlets 112 to be in a closed state; the fan 13 sucks in the air through the two fresh air openings 113, the sucked air passes through the two evaporators 12 again, then enters the fan 13, the air is discharged to the air supply opening 111 by the fan 13, and the air output by the air supply opening 111 is conveyed through the air supply pipe 3.
In the above temperature regulation process, the air flowing back into the cold air device 1 from the air return port 112 is indoor air, and after long-time air return, the air is not fresh enough, and fresh air needs to be supplemented, so that the fresh air port 113 can be switched to introduce fresh air; if the fresh air is introduced for a long time, the energy consumption of the cold air system is increased due to the fact that the temperature of the fresh air and the indoor air generally have a larger temperature difference, and therefore the refrigerating is regulated and controlled by adopting a mode of switching the fresh air inlet 113 and the return air inlet 112.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above examples, and all technical solutions belonging to the concept of the present application belong to the protection scope of the present application. It should be noted that modifications and adaptations to the present application may occur to one skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (6)
1. A cold air system, characterized by comprising a cold air device (1), wherein the cold air device (1) comprises a shell (11), an evaporator (12) and a fan (13); the cold air device (1) comprises two evaporators (12); both the evaporator (12) and the fan (13) are installed in the housing (11); each evaporator (12) comprises a plurality of evaporation sheets (121) which are arranged at intervals and are arranged on the inner section of the shell (11); the fan (13) is configured to draw gas into the housing (11) and send the gas out of the housing (11) after passing through the plurality of evaporation sheets (121);
all evaporation sheets (121) of the evaporators (12) are arranged in parallel, and the distance between two adjacent evaporation sheets (121) in each evaporator (12) is 5-10cm;
an air supply outlet (111) is arranged on the shell (11);
the two evaporators (12) are arranged at two sides of the fan (13), and the fan (13) extends out of the two enlarged bellmouths (131) to surround the air outlet ends of the two evaporators (12); the fan (13) also extends out of an air outlet pipeline to be communicated with the air supply outlet (111);
the cold air system also comprises a heating mechanism (14) for heating the sucked air; the heating mechanism (14) is arranged in the shell (11), is close to the air inlet end of the evaporator (12) and is arranged at intervals with the air inlet end of the evaporator (12); at least a part of the heating mechanism (14) is arranged at the periphery of the air inlet end of the evaporator (12).
2. The cold air system according to claim 1, wherein the housing (11) is further provided with two fresh air inlets (113) and two return air inlets (112); the cold air device (1) comprises a controller and two evaporators (12); the controller is arranged to control the switch of the two fresh air inlets (113) and the switch of the two return air inlets (112); one of the fresh air inlet (113) and one of the return air inlet (112) are both open to one of the evaporators (12), and the other of the fresh air inlet (113) and the other of the return air inlet (112) are both open to the other of the evaporators (12); the fan (13) is configured to suck air into the two fresh air inlets (113) and/or the two return air inlets (112) through suction, pass through the two evaporators (12), and then pass through the fan (13) and then are conveyed to the air supply outlet (111).
3. The cold air system according to claim 2, further comprising a plurality of return air ducts (2) and a plurality of supply air ducts (3); each return air inlet (112) is communicated with one to a plurality of return air pipes (2); a plurality of uniformly distributed return air holes (201) are formed in each return air pipe (2); the air supply opening (111) is outwardly branched to form a plurality of air supply pipes (3); a plurality of uniformly distributed air supply holes (301) are formed in each air supply pipe (3); two fresh air ports (113) are communicated with the atmosphere.
4. The cold air system according to claim 1, wherein the heating mechanism (14) comprises a plurality of electric heaters (141) uniformly distributed at the entire air inlet end face of the evaporator (12).
5. A method of controlling cool air, characterized in that the cool air system of claim 2 or 3 is used to control the delivery of cool air, the method comprising:
the controller controls the two fresh air inlets (113) to be in a closed state, and the two return air inlets (112) to be in an open state; the fan (13) sucks gas through the two return air inlets (112), the sucked gas passes through the two evaporators (12) again, then enters the fan (13), and the fan (13) discharges the gas to the air supply inlet (111);
the controller controls the two fresh air inlets (113) to be in an open state, and the two return air inlets (112) to be in a closed state; the fan (13) sucks gas through the two fresh air ports (113), the sucked gas passes through the two evaporators (12) again, then the sucked gas enters the fan (13), and the air is discharged to the air supply port (111) through the fan (13).
6. Use of a cool air system according to claim 3, wherein the cool air system is applied to cool air control of a bacterial room, comprising: the cold air equipment (1) is arranged outside the fungus room; the plurality of air supply pipes (3) are arranged at the inner top of the fungus room; the plurality of return air pipes (2) are arranged at the inner bottom of the fungus house.
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| CN202211161576.7A CN115462281B (en) | 2022-09-23 | 2022-09-23 | Cold air system, method for controlling cold air and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211161576.7A CN115462281B (en) | 2022-09-23 | 2022-09-23 | Cold air system, method for controlling cold air and application |
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| CN115462281B true CN115462281B (en) | 2023-11-28 |
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