CN115462281A - 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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- CN115462281A CN115462281A CN202211161576.7A CN202211161576A CN115462281A CN 115462281 A CN115462281 A CN 115462281A CN 202211161576 A CN202211161576 A CN 202211161576A CN 115462281 A CN115462281 A CN 115462281A
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- 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
Abstract
The utility model relates to an air conditioning technology field, including disclosing a cold wind system, this cold wind system includes a cold wind equipment, cold wind equipment includes casing, evaporimeter and fan. The evaporator and the fan are both arranged in the shell; the evaporator comprises a plurality of evaporation pieces arranged at intervals and arranged on the inner section of the shell; the fan is configured to draw gas into the housing and to cause the gas to pass through the plurality of evaporation sheets and exit the housing. This application is divided into the evaporation piece that a plurality of intervals set up with the evaporimeter, compare in the monomer formula evaporimeter that the gross thickness after adding with these a plurality of evaporation pieces equals, the evaporimeter of this application forms the buffer space between a plurality of evaporation pieces, resistance to the air current is littleer, under equal air output, the energy consumption of fan has effectively been reduced, simultaneously because the establishment of this buffer space, the route that makes the air current pass through is longer, gas cooling's stroke increases, refrigeration effect is better, and the refrigeration efficiency is improved.
Description
Technical Field
The present application relates to the field of air conditioning technology, and more particularly, to a cold air system, and a method and application for controlling cold air.
Background
The culture of fungus bags (fungus sticks) is a common method for culturing modern edible fungi. The fungus bag is prepared by inoculating strain to bagged culture medium (such as cottonseed hull) and culturing in greenhouse or fungus room (room for culturing edible fungus) and controlling temperature. In the production of edible fungi, it is necessary to maintain a specific temperature and humidity and moisture in the fungus bag to grow excellent edible fungi.
According to the relationship between the differentiation of fruiting bodies (the initiation of primordia) and temperature, edible fungi can be divided into two categories:
1. low temperature type, with the highest temperature not higher than 24 deg.C, and the most suitable temperature lower than 20 deg.C, such as Lentinus Edodes, needle Mushroom, agaricus campestris, and Pleurotus Ostreatus.
2. Medium temperature type, with the highest temperature higher than 30 deg.C, and the most suitable temperature higher than 24 deg.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, proper temperature and humidity are controlled by refrigerating and humidifying a fungus room. In the existing refrigerating machines used for refrigerating the fungus rooms, a centrifugal machine for extracting cold air and sending the cold air into the rooms is large in power consumption and low in refrigerating efficiency.
Disclosure of Invention
In order to solve the problems that in the process that the existing refrigerator extracts cold air and sends the cold air into a room, a centrifugal machine for air extraction is large in power consumption and low in refrigeration efficiency, the application provides a cold air system, and a method and application for controlling the 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 pieces arranged at intervals and arranged on the inner section of the shell; the fan is configured to draw gas into the housing and to cause the gas to pass through the plurality of evaporation sheets and exit the housing.
By adopting the technical scheme: divide the evaporimeter into the evaporation piece that a plurality of intervals set up, compare in the monomer formula evaporimeter that the gross thickness after adding with these a plurality of evaporation pieces equals, the evaporimeter of this application forms buffer space between a plurality of evaporation pieces, the experiment proves, it is littleer to the resistance of air current, under equal air output, the energy consumption of fan has effectively been reduced, simultaneously because this buffer space's establishment, the route that makes the air current pass through is longer, gas cooling's stroke increases, refrigeration effect is better, and the refrigeration efficiency is improved.
Preferably, all the evaporation sheets of the evaporator are arranged in parallel, and the distance between every 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 airflow is small, and the refrigeration 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 set to control the switches of the two fresh air inlets and the switches of the two return air inlets. One of the fresh air inlets and one of the return air inlets are both communicated with one of the evaporators, and the other of the fresh air inlets and the other of the return air inlets are both communicated with the other of the evaporators. The fan is configured to suck air into the two fresh air inlets and/or the two return air inlets by suction, pass through the two evaporators, and then pass through the fan and then deliver the air to the air supply outlet.
By adopting the technical scheme: the two fresh air inlets and the two air return inlets are arranged on the shell, compared with single-inlet air inlet, the air inlet quantity and the air inlet speed of a single inlet 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 air return inlets, and the functions of the cold air system can be enriched by combining the selective suction of the gas in different areas by the pipeline. The two fresh air inlets, the two air return inlets, the two evaporators and the fan are correspondingly arranged, so that wind power is dispersed, higher total air volume is kept, the design of the cold air equipment can be more symmetrical and compact, the volume of the cold air equipment can be effectively reduced, and the occupation of the cold air equipment on space is reduced.
Preferably, the two evaporators are arranged on two sides of the fan, and the fan extends out of two enlarged bell mouths to surround the air outlet ends of the two evaporators; the fan also extends out of an air outlet pipeline and is communicated to the air supply outlet.
By adopting the technical scheme: the bell mouth is designed to draw air, so that the air suction force is improved, particularly, the suction force of the fan to the edge of the air outlet edge is improved, and the air outlet volume is improved.
Preferably, the cold air system further comprises a plurality of return air pipes and a plurality of blast air pipes. Each air return inlet is communicated with one or more air return pipes; each air return pipe is provided with a plurality of air return holes which are uniformly distributed; the air supply outlet is outwards branched to form a plurality of air supply pipes; each air supply pipe is provided with a plurality of uniformly distributed air supply holes; both of said fresh air ports open into the atmosphere.
By adopting the technical scheme: cold air sent by the plurality of air supply pipes flows back through the plurality of air return pipes, so that the cold air is uniformly distributed; a plurality of uniformly distributed air supply holes are formed in each air supply pipe, and a plurality of uniformly distributed air return holes are formed in each air return pipe, so that the uniformity of cold air distribution is further improved; the two fresh air ports are communicated with the atmospheric environment, and fresh air can be sucked in when needed, so that the use requirement is met.
Preferably, the cold air system further comprises a heating mechanism for heating the sucked gas; the heating mechanism is arranged in the shell, is close to the air inlet end of the evaporator and is arranged at an interval with the air inlet end of the evaporator.
By adopting the technical scheme: the heating mechanism can heat the gas that lets in, and the gaseous difference in temperature grow of the gas after the heating and evaporimeter for the vapor in the gas that lets in condenses into water more easily, thereby reduces the humidity that lets in gas, has reduced the degree that lets in gas and ice at evaporimeter air-out end.
Preferably, at least one 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 at the air outlet end of the evaporator is easy to freeze, and the heating mechanism is arranged at the periphery at the air inlet end, so that the air flow humidity at the periphery is reduced, and the freezing phenomenon at the periphery at the air outlet end of the evaporator can be pertinently reduced. The heating mechanism is distributed at the periphery and can be distributed by being dispersed into multiple points.
Preferably, the heating mechanism comprises a plurality of electric heaters which are uniformly distributed on the whole air inlet end surface of the evaporator.
By adopting the technical scheme: the air flow sucked into the cold air system mainly flows towards the direction sucked by the fan, but the air flow still has convection 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 whole heated air and the evaporator is increased, 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 also provides a method for controlling cold air, and adopts the following technical scheme.
A method of controlling a cool air flow using the cool air system to control delivery of the cool air, 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 air through the two air return ports, the sucked air passes through the two evaporators and then enters the fan, and the fan discharges the air to the air supply port;
the controller controls the two fresh air inlets to be in an opening state, and the two return air inlets are in a closing state; the fan sucks air through the two fresh air ports, the sucked air passes through the two evaporators and then enters the fan, and the fan discharges the air to the air supply port.
By adopting the technical scheme: the fresh air inlet and the return air inlet can be freely switched to supply air to different environments, and different scene requirements are met. For example, the return air inlet is communicated with the indoor space, the fresh air inlet is communicated with the outdoor space, air flowing back into the cold air equipment from the return air inlet is indoor air, 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 form of introducing fresh air for a long time is adopted, the energy consumption is increased because the temperature of the fresh air and the indoor air generally have larger temperature difference, and therefore, the cold air is regulated and controlled by adopting a mode of switching a fresh air inlet and a return air inlet.
In a third aspect, the application also provides an application of the cold air system, and adopts the following technical scheme.
The application of the cold air system is applied to cold air control of a fungus room, and comprises the following components: 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; and the plurality of air return pipes are arranged at the inner bottom of the fungus room.
By adopting the technical scheme: the density of flowing out is greater than the cold wind of indoor air in a plurality of blast holes of a plurality of blast pipes at top, subsides and disperses to all directions under the action of gravity, and is through a plurality of return air pipe extraction indoor air for the even dispersion of air conditioning reaches the effect of evenly cooling down and taking a breath in the fungus room in each space of fungus room.
In summary, the present application has the following beneficial effects:
the evaporator is divided into a plurality of evaporation pieces which are arranged at intervals, a buffer space is formed among the evaporation pieces, and compared with a single evaporator with the same total thickness, the resistance of airflow passing through the evaporator effectively reduces the energy consumption of a fan and improves the refrigeration efficiency under the same air output quantity;
the bell mouth is designed for air draft, the air draft force is improved, particularly the suction force of the fan to the edge of the air outlet edge is improved, and the air outlet quantity is improved;
the heating mechanism is arranged at the air inlet end of the evaporator and 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 freezing degree of the introduced gas at the air outlet end of the evaporator is reduced;
with this cold air system installation on the fungus room, flow out the cold wind that density is greater than the indoor air in a plurality of blast holes of a plurality of blast pipes at top, subside and disperse to all directions under the action of gravity, through a plurality of the return air pipe extracts the indoor air for the even dispersion of air conditioning reaches the effect of evenly cooling down and taking a breath to the air in the fungus room on each space in fungus room.
Drawings
FIG. 1 is a schematic view of the main view internal structure of a cooling air system;
FIG. 2 includes a left view external schematic view of the air cooling system of FIG. 1 and a schematic view of the air cooling system installed inside and outside the fungus room;
fig. 3 is a top view external configuration diagram of the cooling air system of fig. 1.
Reference numerals: 1. a cold air device; 11. a housing; 12. an evaporator; 13. a fan; 2. a return air duct; 3. an air supply pipe; 121. an evaporation sheet; 131. a bell mouth; 111. an air supply outlet; 112. an air return opening; 113. a fresh air port; 201. air return holes; 301. an air supply hole; 14. a heating mechanism; 141. an electric heater; 4. an atomizer; 5. an atomizing tube; 501. and a mist outlet.
Detailed Description
The present application will be described in further detail with reference to examples.
Referring to fig. 1, a schematic view of an internal structure of a main viewing angle of a cold air system includes a cold air apparatus 1, where the cold air apparatus 1 includes a housing 11, an evaporator 12, and a fan 13. The evaporator 12 and the fan 13 are both mounted in the housing 11. The housing 11 may be prepared using a stainless steel material.
The evaporator 12 is a refrigeration device, and the refrigeration principle thereof is as follows: the low-temperature condensed liquid passes through the evaporator 12 and exchanges heat with the outside air, and the condensed liquid is gasified to absorb heat, so that the effect of refrigerating the air is achieved. The evaporator 12 is generally of a one-piece design and has a large thickness, and in the embodiment of the present application, the evaporator 12 is configured to include a plurality of evaporation sheets 121 arranged at intervals, which are all arranged on the inner cross section of the housing 11. The thickness of the evaporation sheet 121 can be made relatively thin, and the sum of the thicknesses of the plurality of evaporation sheets 121 corresponds to the thickness of the conventional integrated evaporator 12.
The fan 13 may be a centrifugal fan 13, which generates a suction force by centrifugation to suck the gas into the housing 11, and sends the gas out of the housing 11 after passing through the plurality of evaporation sheets 121. There are several alternative ways for the installation position of the fan 13For example: the fan 13 is arranged behind the evaporator 12, and external air is sucked into the shell 11 in a suction mode, passes through the evaporator 12, is sucked into the fan 13, and is sent out of the shell 11 through the fan 13; the fan 13 may also be disposed before the evaporator 12 to draw air in, push it into the evaporator 12, pass it through the evaporator 12, and finally exit the housing 11. In a preferred embodiment, the fan 13 is disposed behind the evaporator 12, and negative pressure is generated by suction, so that the outside air firstly passes through the evaporator 12 and is sent out of the housing 11 after entering the fan 13, compared with the way that the air sucked by the fan 13 is pushed through the evaporator 12, under the same power of the fan 13, the initial air speed of the air passing through the evaporator 12 is smaller than the initial air speed of the air passing through the evaporator 12, so the wind resistance of the air passing through the evaporator 12 is smaller, the wind speed of the cold air passing through the evaporator 12 is larger than the wind speed of the cold air passing through the evaporator 12, the output cold air flow rate of the air passing through the evaporator 12 is larger, and the average air output rate of the air passing through the evaporator is 6032CMH (CMH can also be written as m) under the same experimental condition, when the power of the fan 13 is 1.5kW 3 And h), the air output of the latter is 5156CMH on average.
In order to compare the current single evaporator 12, the inventor performs a refrigeration experiment by closely stacking the plurality of evaporation sheets 121 as a substitute of the single evaporator 12, and also adopts a mode that the fan 13 is arranged behind the evaporator 12, negative pressure is generated by suction, and outside air firstly 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 air output of the comparison scheme is 4480CMH on average, which is 35% smaller than that of 6032CMH of the previous embodiment. In the embodiment, the buffer space is formed among the plurality of evaporation sheets 121, so that the influence of blockage of the ventilation gap due to close overlapping of the plurality of evaporation sheets 121 is reduced, the wind resistance is effectively reduced, the energy consumption of the fan 13 is reduced, the stroke of cooling air is increased, and the refrigeration 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 5-20cm. It is further preferable that all the evaporation sheets 121 are arranged at equal intervals, and the distance between two adjacent evaporation sheets 121 is 10cm. In one test example, three parallel evaporation sheets 121 are arranged, the distance between two adjacent evaporation sheets 121 is 10cm, the power of the fan 13 is 1.5kW, and the average air output is 6032CMH. In another example, the three evaporation sheets 121 are stacked closely, and other test conditions are the same as those in the previous example, including setting the power of the fan 13 to be 1.5kW, and the average air output is 4480CMH.
Referring to fig. 2, the cooling air system can be used for temperature control of an edible fungus cultivation room, and fig. 2 is a schematic view of a connection structure of the cooling air system installed inside and outside a fungus room (an edible fungus cultivation room). To this end, a supply port 111 for supplying cold air, a return port 112 for returning indoor air, and a fresh air port 113 for sucking outdoor fresh air are provided in the casing 11, and a supply pipe 3 for supplying cold air and a return pipe 2 for returning indoor air are provided, the supply pipe 3 is connected to the supply port 111, the return pipe 2 is connected to the return port 112, and supply, cooling, and supply of air are controlled by the cold air device 1.
As shown in fig. 1, in order to uniformly control the temperature and the oxygen content of the fungus room, two fresh air inlets 113, two return air inlets 112, and an air supply outlet 111 are preferably provided on the housing 11. The air cooling device 1 is provided with a PLC controller and two evaporators 12. And aluminum alloy doors are arranged on the fresh air inlet 113 and the return air inlet 112. The PLC is set to control the opening and closing of four aluminum alloy doors, so as to control the opening and closing of the two fresh air inlets 113 and the opening and closing of the two return air inlets 112. The fresh air opening 113 and the return air opening 112 may be opened at the same time, or only the fresh air opening 113 or only the return air opening 112 may be opened at the same time. Rain-proof shutters can be arranged outside the aluminum alloy door at the fresh air opening 113.
Inside the casing 11, one of said fresh air openings 113 and one of said return air openings 112 both open into one of the evaporators 12, and likewise, the other of said fresh air openings 113 and the other of said return air openings 112 both open into the other of said evaporators 12. The fan 13 can generate suction force by centrifugation, and suck the gas into the two fresh air inlets 113 and/or the two return air inlets 112, and the gas passes through the two evaporators 12, is sucked into the fan 13, and is 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 disposed on the casing 11, the two fresh air inlets 113 can be symmetrically disposed on two sides of the casing 11 so as to fully suck the fresh air from the outside, and the two air return inlets 112 can also be symmetrically disposed on the same side of the casing 11 and both face the fungus room so as to be connected to the air return pipe 2. Compared with a single fresh air inlet 113 and a single return air inlet 112, under the same air inlet amount, the arrangement of the two fresh air inlets 113 and the two return air inlets 112 reduces the air inlet amount and the air inlet speed of a single opening, the lower air speed reduces the resistance of the evaporator 12 to the air flow, and the energy consumption of the fan 13 is reduced. Under the demand of maintaining certain airflow, the symmetrical arrangement enables the structure of the cold air equipment 1 to be more compact, can effectively reduce the volume of the cold air equipment 1, and reduces the occupation of 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 flares 131 to surround the air outlet ends of the two evaporators 12, so as to generate a larger suction force to the airflow around the air outlet ends of the evaporators 12, increase the air volume, and reduce the peripheral icing phenomenon. The fan 13 further extends out of an air outlet pipeline to be communicated with the air outlet 111. The circumference of the air outlet end of the evaporator 12 may be circular, square, or other regular or irregular shapes.
Referring to fig. 3, in order to improve the uniformity of air supply, a plurality of air return pipes 2 and a plurality of air supply pipes 3 may be provided, and a plurality of air return pipes 2 and a plurality of air supply pipes 3 may be uniformly installed in the edible fungus culturing room for regulating and controlling the flow of cold air. In order to further improve the uniformity of cold airflow in the fungus room, the plurality of air supply pipes 3 can be uniformly laid on the top of the fungus room, the plurality of air return pipes 2 are arranged at the bottom of the fungus room for air backflow, and due to the influence of gravity, cold air can fully flow to most of the space of the fungus room. In this cool air system, each of the return air inlets 112 communicates with one or more of the return air pipes 2, for example, for two return air inlets 112, each of the return air inlets 112 communicates with one of the return air pipes 2. In order to further enhance the uniformity of the cold air flow flowing in the fungus room, a plurality of air return holes 201 are formed in each air return pipe 2 and are distributed at equal intervals, and the air return holes 201 are preferably arranged upwards to guide the air flow so as to make the indoor air flow more uniform in mixing. One of the air supply outlets 111 is branched outwardly to connect a plurality of air supply pipes 3, for example, two air supply pipes 3 are branched to connect, and the two air supply pipes 3 may be arranged in parallel at intervals in the fungus room. Every set up a plurality of evenly distributed's supply-air hole 301 on the blast pipe 3 to improve the homogeneity of air-out, supply-air hole 301 can upwards set up, makes the more even that air conditioning flow spreads to both sides. Both of the fresh air ports 113 open directly to the outdoor atmosphere. The PLC controller provided in the air cooling device 1 can control the two fresh air inlets 113 to be opened simultaneously and also control the two return air inlets 112 to be closed simultaneously, or control the fresh air inlets 113 to be closed while the return air inlets 112 are opened, and can be opened and closed in turn for a plurality of times. As an optional mode, the return air inlet 112 is opened in a longer time period, since the temperature and humidity of the return air generally meet the cultivation requirement of fungi, the refrigeration electric energy can be saved in this mode, and the fresh air inlet 113 is opened in a shorter time period to timely supplement fresh air when the return air deviates from the cultivation requirement of fungi.
Referring to fig. 2, further, the cold air system may further include an atomizer 4 and an atomizing pipe 5 installed in the fungus room, the atomizer 4 is connected to the two atomizing pipes, the atomizing pipes may be installed on the top of the fungus room and located below the air supply pipe 3, each atomizing pipe is uniformly provided with a plurality of mist outlet holes 501, the mist outlet holes may be disposed on the side, lower side, etc. of the atomizing pipe, and the mist is sprayed to humidify the fungus room, so that the internal environment of the fungus room is more suitable for cultivation of fungus bags.
Furthermore, the cold air system can also comprise a fungus room which is provided with a self-hanging shutter for natural ventilation. The self-dropping shutter naturally drops by the dead weight of the shutter of the air port under normal conditions to isolate the air exchange between indoor and outdoor, 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 can not flow into the indoor reversely, and the air port has a one-way non-return function.
Referring to fig. 1, in the process of using 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 ℃, 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 the ice needs to be removed. In contrast, the cooling air system is further provided with a heating mechanism 14 for heating the air, and the heating mechanism 14 can be uniformly arranged at the periphery of the air inlet end side of the evaporator 12, and can also be arranged at other positions of the air inlet end side, and the whole air inlet end of the evaporator 12 is separated 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 is increased, so that the water vapor in the introduced gas is more easily condensed 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 opened at a proper time or be opened normally, and after the heating mechanism is opened, the icing phenomenon can be obviously improved.
In order to further improve the icing effect on the periphery of the evaporator 12, in one embodiment, the heating mechanism 14 includes a plurality of electric heaters 141 uniformly arranged outside the entire air inlet end surface of the evaporator 12, so that the temperature difference between the heated air flow and the evaporator 12 becomes large, and the water vapor in the air flow is easy to condense into water after being cooled, thereby significantly reducing the icing phenomenon on the end of the evaporator 12.
The cold air system of the embodiment is applied to temperature regulation of the fungus room, the cold air equipment 1 can be installed outside the fungus room, the blast 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 following operation modes can be selected for temperature regulation:
the PLC 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 air through the two air return inlets 112, the sucked air passes through the two evaporators 12 and then enters the fan 13, the fan 13 discharges the air to the air supply opening 111, and the air output by the air supply opening 111 is conveyed through the air supply pipe 3;
the PLC controller controls the two fresh air inlets 113 to be in an opening state, and the two return air inlets 112 to be in a closing state; the blower 13 sucks air through the two fresh air inlets 113, the sucked air passes through the two evaporators 12 and then enters the blower 13, the blower 13 discharges the air to the air supply outlet 111, and the air output from the air supply outlet 111 is conveyed through the air supply pipe 3.
In the temperature control process, the air flowing back into the cold air device 1 from the return air inlet 112 is indoor air, and after the air returns for a long time, the air is not fresh enough and needs to be supplemented with fresh air, so that the fresh air inlet 113 can be switched to introduce the fresh air; if the form of introducing the fresh air for a long time is adopted, the energy consumption of the cold air system is increased because the temperature difference between the fresh air and the indoor air is generally larger, and the refrigeration is regulated and controlled by 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 embodiments, and all technical solutions belonging to the idea of the present application belong to the protection scope of the present application. It should be noted that several improvements and modifications to the present application without departing from the principles of the present application will occur to those skilled in the art, and such improvements and modifications should also be considered within the scope of the present application.
Claims (10)
1. A cold air system is 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 evaporator (12) and the fan (13) are both arranged in the shell (11); the evaporator (12) comprises a plurality of evaporation sheets (121) arranged at intervals, and the evaporation sheets are arranged on the inner section of the shell (11); the fan (13) is configured to draw gas into the housing (11) and to cause the gas to exit the housing (11) after passing through the plurality of evaporation sheets (121).
2. The cold air system according to claim 1, wherein all evaporation sheets (121) of the evaporator (12) are arranged in parallel, and the distance between two adjacent evaporation sheets (121) is 5-20cm.
3. The cold air system according to claim 1, wherein the housing (11) is provided with two fresh air inlets (113), two return air inlets (112) and a supply air outlet (111); the cold air device (1) comprises a controller and two evaporators (12); the controller is arranged to control the switches of the two fresh air inlets (113) and the switches of the two return air inlets (112); one of said fresh air openings (113) and one of said return air openings (112) each opening into one of said evaporators (12), the other of said fresh air openings (113) and the other of said return air openings (112) each opening into the other of said 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) by suction, and to convey the air to the air supply outlet (111) after passing through the two evaporators (12) and then the fan (13).
4. A cold air system according to claim 3, wherein two evaporators (12) are arranged on both sides of the fan (13), and the fan (13) extends out of two enlarged flares (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 to the air supply outlet (111).
5. A cold air system according to claim 3, further comprising a plurality of return air ducts (2) and a plurality of blast ducts (3); each air return opening (112) is communicated with one or more air return pipes (2); a plurality of air return holes (201) which are uniformly distributed are formed in each air return pipe (2); the air supply outlet (111) is provided with a plurality of air supply pipes (3) which are branched outwards; each air supply pipe (3) is provided with a plurality of uniformly distributed air supply holes (301); two of the fresh air ports (113) are open to the atmosphere.
6. The cold blast system according to any one of claims 1 to 5, further comprising a heating mechanism (14) for heating the drawn gas; 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 an interval with the air inlet end of the evaporator (12).
7. The cold air system according to claim 6, wherein at least a part of the heating means (14) is arranged at the periphery of the air inlet end of the evaporator (12).
8. The cold air system according to claim 7, wherein the heating mechanism (14) comprises a plurality of electric heaters (141) uniformly arranged at the entire air intake end surface of the evaporator (12).
9. A method of controlling a cool air, wherein the delivery of the cool air is controlled using the cool air system of any one of claims 3 to 5, 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 air through the two air return ports (112), the sucked air passes through the two evaporators (12) and then enters the fan (13), and the fan (13) discharges the air to the air supply port (111);
the controller controls the two fresh air inlets (113) to be in an opening state, and the two return air inlets (112) to be in a closing state; the fan (13) sucks air through the two fresh air ports (113), the sucked air passes through the two evaporators (12) and then enters the fan (13), and the fan (13) discharges the air to the air supply port (111).
10. The use of a cold blast system according to claim 5 for cold blast control of a fungi 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; a plurality of air return pipes (2) are arranged at the inner bottom of the fungus room.
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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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| CN202211161576.7A CN115462281B (en) | 2022-09-23 | 2022-09-23 | Cold air system, method for controlling cold air and application |
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